TWI685009B - Light source board, manufacturing method thereof, and luminous keyboard using the same - Google Patents

Abstract

A light source board includes a substrate, a composite conductive wire layer, a first protective layer and a plurality of light sources. The substrate has a long side, a first short side and a second short side. The composite conductive wire layer is disposed on the substrate. The composite conductive wire layer has a wire portion and a plurality of pad portions. The wire portion is formed of at least a first conductive wire layer. The pad portions are formed of at least the first conductive wire layer and a second conductive wire layer stacked on the first conductive wire layer. A conductivity of the second conductive wire layer is higher than a conductivity of the first conductive wire layer. The wire portion is electrically coupled with the pad portions. The first protective layer is disposed on the composite conductive wire layer and exposes the pad portions. The light sources are disposed on the pad portions, respectively.

Description

Light source lamp board, manufacturing method thereof, and luminous keyboard using the same

The invention relates to a circuit board, a manufacturing method thereof, and a keyboard using the circuit board. The invention particularly relates to a light source lamp board, a manufacturing method thereof, and a light-emitting keyboard using the same.

In addition to the improvement of basic functions, people often pursue other added values such as beauty and comfort in use. For example, as far as the keyboard is concerned, in addition to basic typing applications, because people sometimes use computer systems in low-light situations, a light-emitting keyboard is born. After the keyboard is added with a light-emitting function, there is a corresponding need to further improve the uniformity of light-emitting, increase the diversity of light-emitting, and thin the keyboard.

The invention relates to a light source lamp board, a manufacturing method thereof, and a light-emitting keyboard using the same. The use of the light-emitting keyboard of the light source lamp board can further improve the user experience.

According to some embodiments, a light source lamp board includes a substrate, a composite conductive circuit layer, a first protective layer, and a plurality of light sources. The substrate has a long side, a first short side, and a second short side. The composite conductive circuit layer is disposed on the substrate. The composite conductive circuit layer has a wire part and a plurality of pad parts. The wire part is composed of at least a first conductive circuit layer. The pad portion is composed of at least a first conductive circuit layer and a second conductive circuit layer stacked on the first conductive circuit layer. The conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer. The lead part is electrically coupled to the pad part. The first protective layer is disposed on the composite conductive circuit layer and exposes the pad portion. The light sources are respectively arranged on the pad parts.

According to some embodiments, a method for manufacturing a light source lamp board includes the following steps. First, a substrate is provided. The substrate has a long side, a first short side, and a second short side. A composite conductive circuit layer is formed on the substrate. The composite conductive circuit layer has a lead portion and a plurality of pad portions. The lead portion is electrically coupled to the pad portion. Forming a composite conductive circuit layer includes forming a first conductive circuit layer on the substrate and forming a second conductive circuit layer on the first conductive circuit layer, the second conductive circuit layer having higher conductivity than the first conductive circuit layer . The wire portion is composed of at least a first conductive circuit layer, and the pad portion is composed of at least a first conductive circuit layer and a second conductive circuit layer stacked on the first conductive circuit layer. A first protective layer is formed on the composite conductive circuit layer, and the first protective layer exposes the pad portion. In addition, a plurality of light sources are provided on the plurality of pad portions.

According to some embodiments, a light-emitting keyboard includes a plurality of key caps and a light source light board. The light source lamp board is arranged under the plurality of key caps. Light source lamp board package It includes a substrate, a composite conductive circuit layer, a first protective layer and a plurality of light sources. The substrate has a long side, a first short side, and a second short side. The composite conductive circuit layer is disposed on the substrate. The composite conductive circuit layer has a wire part and a plurality of pad parts. The wire part is composed of at least a first conductive circuit layer. The pad portion is composed of at least a first conductive circuit layer and a second conductive circuit layer stacked on the first conductive circuit layer. The conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer. The lead part is electrically coupled to the pad part. The first protective layer is disposed on the composite conductive circuit layer and exposes the pad portion. The light sources are respectively arranged on the pad parts. The light emitted by the light source can travel upward to reach the plurality of keycaps.

In order to have a better understanding of the above and other aspects of the present invention, the following examples are specifically described in conjunction with the accompanying drawings as follows:

100, 300, 540, 640, 740, 840, 940

110, 310, 541‧‧‧ substrate

120, 320, 550‧‧‧ composite conductive circuit layer

121、321‧‧‧Wire Department

122, 322, 557‧‧‧ pad part

123A, 123B, 123C

124‧‧‧Resistance device

125, 325‧‧‧ First conductive circuit layer

126, 326‧‧‧ Second conductive circuit layer

130, 330 ‧‧‧ first protective layer

140, 340, 560

140A, 140B, 140C, 140D, 140E, 140F ‧‧‧ LED light source

150, 150A, 150B, 150C, 150D, 350 second protection layer

151B‧‧‧Diffusion particles

210, 220, 230, 240, 250, 260, 410, 420, 430, 440, 450, 460

510, 610, 710, 810, 910

510M‧‧‧Centerline

520‧‧‧ membrane switch layer

521, 621, 721, 821, 921‧‧‧ switch electrode layer

522, 622, 722, 822, 922 ‧‧‧ support structure

523‧‧‧rubber elastomer

524‧‧‧Scissor foot structure

525, 625, 725, 825, 925 ‧‧‧ connection structure

526, 531‧‧‧ opening

530, 630, 730, 830, 930

542‧‧‧Long side

543‧‧‧First short side

544‧‧‧second short side

545‧‧‧Tail

546‧‧‧Extension wire

547‧‧‧Scheduled bending part

551‧‧‧High potential first wire

552‧‧‧High potential second wire

552S, 555S‧‧‧S-shaped path

553‧‧‧High potential third wire

554‧‧‧Low potential third wire

555‧‧‧Low potential second wire

556‧‧‧Low potential first lead

558‧‧‧Positive electrode

559‧‧‧Negative electrode

FIGS. 1A-1D are schematic diagrams of a light source lamp board and a composite conductive circuit layer therein according to some embodiments.

2A~2C are schematic diagrams of LED light sources having packaging structures according to various embodiments.

Figures 3A~3C are schematic diagrams of LED light sources with encapsulant layers according to various embodiments.

4A-4D are schematic diagrams of the second protective layer of the light source lamp board according to various embodiments.

FIG. 5 is a flowchart of the method for manufacturing the light source lamp board shown in FIGS. 1A to 1D.

6A~6C are schematic diagrams of a light source lamp board and a composite conductive circuit layer therein according to other embodiments.

FIG. 7 is a flowchart of the method for manufacturing the light source lamp board shown in FIGS. 6A to 6C.

8A-8D are schematic diagrams of layers of a light-emitting keyboard according to some embodiments.

FIG. 9 is a schematic top view of one key of the light-emitting keyboard shown in FIGS. 8A-8D.

Figure 10 is a schematic side view of one of the keys of the illuminated keyboard shown in Figures 8A~8D.

FIG. 11 is a schematic side view of one key of a light-emitting keyboard according to other embodiments.

FIG. 12 is a schematic side view of one key of a light-emitting keyboard according to still other embodiments.

FIG. 13 is a schematic side view of one key of a light-emitting keyboard according to still other embodiments.

FIG. 14 is a schematic side view of one key of a light-emitting keyboard according to still other embodiments.

In the following, various different embodiments will be described in more detail in conjunction with the accompanying drawings. The embodiments and the accompanying drawings are only used for description and explanation purposes, but not for limitation purposes. It can be understood that, in terms of structure, other elements may be added, some elements may be removed, some elements may be combined, and/or any other allowable adjustments may be made. In addition, elements described in the singular form are also allowed to exist in the plural condition. In terms of methods, it is possible to adjust the order of the steps, add other steps, omit some steps, combine some steps, and/or make any other allowable adjustments. For the sake of clarity, the elements in the drawings may not be drawn according to actual scale, and some elements and/or element symbols are omitted. It is expected that even if not described, the elements and features in one embodiment can be incorporated into another embodiment under any permissible circumstances.

In one aspect of the present invention, a light source lamp board is provided, which includes a substrate, a composite conductive circuit layer, a first protective layer, and a plurality of light sources. The substrate has a long side, a first short side, and a second short side. The composite conductive circuit layer is disposed on the substrate. The composite conductive circuit layer has a wire part and a plurality of pad parts. The wire part is composed of at least a first conductive circuit layer. The pad portion is composed of at least a first conductive circuit layer and a second conductive circuit layer stacked on the first conductive circuit layer. The conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer. The lead part is electrically coupled to the pad part. The first protective layer is disposed on the composite conductive circuit layer and exposes the pad portion. The light sources are respectively arranged on the pad parts.

In another aspect of the present invention, a method for manufacturing such a light source lamp board is provided, which includes the following steps. First, a substrate is provided. The substrate has a long side, a first short side, and a second short side. A composite conductive circuit layer is formed on the substrate. The composite conductive circuit layer has a lead portion and a plurality of pad portions. The lead portion is electrically coupled to the pad portion. Forming a composite conductive circuit layer includes forming a first conductive circuit layer on the substrate and forming a second conductive circuit layer on the first conductive circuit layer, the second conductive circuit layer having higher conductivity than the first conductive circuit layer . Wire section It is composed of at least a first conductive circuit layer, and the pad portion is composed of at least a first conductive circuit layer and a second conductive circuit layer stacked on the first conductive circuit layer. A first protective layer is formed on the composite conductive circuit layer, and the first protective layer exposes the pad portion. In addition, a plurality of light sources are provided on the plurality of pad portions.

Now please refer to figures 1A~1D for a clearer understanding of the above light source lamp board. FIGS. 1A to 1D show a light source lamp board 100 and a composite conductive circuit layer 120 therein. FIG. 1A illustrates the composite conductive circuit layer 120 of the light source lamp board 100 from a top view, but most of the other elements in the light source lamp board 100 are omitted for clarity. FIGS. 1B and 1C are cross-sectional views of the light source lamp panel 100 along the cross-sectional line 1B-1B' and the cross-sectional line 1C-1C' in FIG. 1A, respectively. As shown in FIGS. 1B and 1C, the light source lamp board 100 includes a substrate 110, a composite conductive circuit layer 120, a first protective layer 130, and a light source 140. The bottom surface of the light source 140 has two positive and negative electrode contacts, which are electrically connected to the two A composite conductive circuit layer 120, thus forming a loop to receive power from the power source.

The substrate 110 can use any suitable substrate. According to some embodiments, substrates available for the printing process are used. In some embodiments, a flexible substrate is used. For example, the substrate 110 may be made of polyethylene terephthalate (PET).

The composite conductive circuit layer 120 is disposed on the substrate 110. As shown in FIG. 1A, the composite conductive circuit layer 120 has a lead portion 121 and a pad portion 122. The width of the pad part 122 can be adjusted according to the size of the light source 140; when the size of the light source 140 is larger, the width of the pad part 122 can be larger than the width of the lead part 121, so as to increase the welding area of the larger size light source 140 and the pad part 122 ; When the size of the light source 140 is small, the pad part The width of 122 may be smaller than the width of the wire portion 121, which is enough to fix the light source 140 of a smaller size. The lead portion 121 is electrically coupled to the pad portion 122. For example, as shown in FIG. 1A, the lead portion 121 is electrically coupled to the pad portion 122 by physically connecting the pad portion 122. FIGS. 1B and 1C show a first conductive circuit layer 125 and a second conductive circuit layer 126 of the composite conductive circuit layer 120. The second conductive circuit layer 126 is stacked on the first conductive circuit layer 125, both of which are used于 constituting the composite conductive circuit layer 120. The conductivity of the second conductive circuit layer 126 is higher than that of the first conductive circuit layer 125. In some embodiments, the material of the first conductive circuit layer 125 may include at least one of copper paste, nickel paste, and silver paste, and the material of the second conductive circuit layer 126 may include silver plating, tin plating, nickel plating, And at least one of gold plating. In the light source lamp panel 100, the lead portion 121 is at least composed of the first conductive circuit layer 125, and the second conductive circuit layer 126 may be selectively partially or entirely selected according to the resistance requirement. When the wire portion 121 requires a lower resistance per unit length, the wire portion 121 may be composed of the first conductive circuit layer 125 and the second conductive circuit layer 126 together. When the wire portion 121 requires a higher resistance per unit length, the wire portion 121 may only have the first conductive circuit layer 125 and no longer cover the second conductive circuit layer 126. In some embodiments, in order to reduce the amount of current flowing on the composite conductive circuit layer 120, the composite conductive circuit layer 120 may further include a resistance increasing portion 123. The resistance increasing portion may be, for example but not limited to, any one or a combination of the resistance increasing portions 123A to 123C shown in FIG. 1D. Please refer to FIG. 1D, (1) the resistance increasing portion 123A only has the first conductive wiring layer 125, but the second conductive wiring layer 126 is not provided; (2) the resistance increasing portion 123B only has the first conductive wiring layer 125, And deliberately extended in an S shape to increase the length and/or width of the first conductive circuit layer 125 Less; (3) The resistance increasing portion 123C-based composite conductive circuit layer 120 has a break gap, and a resistance device 124 is provided in series between two opposite ends of the break.

Please refer to FIGS. 1B and 1C again. The first protective layer 130 is disposed on the composite conductive circuit layer 120 and exposes the pad portion 122. The first protective layer 130 may be formed of PET, UV paste, or the like.

The light sources 140 are respectively disposed on the pad parts 122. The light source 140 may be an LED light source. For example, an LED light source 140A having a plastic leaded chip carrier (PLCC) packaging structure as shown in FIG. 2A may be used. The LED light source 140B having a wire-type packaging structure as shown in FIG. 2B may be used. Alternatively, an LED light source 140C having a wafer level package (CSP) structure as shown in FIG. 2C may be used. In some embodiments, the type of the encapsulant layer in the encapsulation structure can be changed to achieve a specific optical effect. For example, an LED light source in which the encapsulant layer has a uniform light structure may be used, such as the LED light source 140D shown in FIG. 3A, which forms a diffusion microstructure (such as a micro lens) on the surface of the encapsulant layer . An LED light source in which the encapsulant layer has a light-concentrating structure may be used, such as the LED light source 140E shown in FIG. 3B, which forms the surface of the encapsulant layer to have a single spherical convex structure to achieve the light-concentrating effect. Alternatively, an LED light source in which the encapsulating adhesive layer has a light-scattering structure may be used, such as the LED light source 140F shown in FIG. 3C, which forms the surface of the encapsulating adhesive layer to have a single spherical concave structure to achieve the light-scattering effect.

It can be understood that, although the embodiment is an example focusing on the light source with respect to the light source lamp board, other electronic components may also be arranged in the pad part in a similar manner on. That is, in some embodiments, a portion of the pad portion may be provided for electrical coupling of other electronic components besides the light source.

In some embodiments, as shown in FIGS. 1B and 1C, the light source lamp board 100 may further have a second protective layer 150. The second protective layer 150 is disposed on the first protective layer 130 and the light source 140. According to some embodiments, the second protective layer 150 may further have a uniform light structure, and/or a light-concentrating or light-scattering structure. For example, as shown in FIG. 4A, a diffusion microstructure (such as a microlens) may be formed on the surface of the second protective layer 150A to achieve a uniform light effect. Alternatively, as shown in FIG. 4B, diffusion particles 151B are added to the second protective layer 150B to achieve a uniform light effect. The diffusion particles 151B may be titanium dioxide, silicon dioxide, phosphor, or the like. In addition, as shown in FIG. 4C, the surface of the second protective layer 150C may be formed to have a single spherical convex structure to achieve a light-concentrating effect. Alternatively, as shown in FIG. 4D, the surface of the second protective layer 150D may be formed to have a single spherical concave structure to achieve the astigmatism effect. The second protective layer 150 may be formed of PET, ultraviolet curable glue, or the like. The material of the second protective layer 150 may be the same or different from the material of the first protective layer 130.

Please refer to FIG. 5, which is a flowchart of a method for manufacturing the light source lamp board 100. At step 210, a substrate 110 is provided. The substrate 110 may have a long side, a first short side, and a second short side. In step 220, the first conductive circuit layer 125 of the composite conductive circuit layer 120 is formed on the substrate 110. In step 230, a second conductive circuit layer 126 is formed on the first conductive circuit layer 125, and the conductivity of the second conductive circuit layer 126 is higher than that of the first conductive circuit layer 125. In some embodiments, forming the first conductive circuit layer 125 includes performing a printing process to form the second conductive circuit layer 126 Including a coating process. For example, the printing process for forming the first conductive circuit layer 125 may include coating a conductive paste, the conductive paste being at least one of copper paste, nickel paste, and silver paste. The plating process for forming the second conductive circuit layer 126 may include electroplating or electroplating a metal, the metal being at least one of silver, tin, nickel, and gold. For example, in some embodiments, the first conductive circuit layer 125 may be formed by screen printing silver paste, and the second conductive circuit layer 126 may be formed by electroless copper plating. The lead portion 121 of the composite conductive circuit layer 120 is composed of at least the first conductive circuit layer 125 and may further include a second conductive circuit layer 126, and the pad portion 122 is at least composed of the first conductive circuit layer 125 and the second conductive circuit layer 126 constituted. Thereafter, in step 240, a first protective layer 130 is formed on the composite conductive circuit layer 120, and the first protective layer 130 exposes the pad portion 122. Since the first protective layer 130 is formed after the second conductive circuit layer 126 is formed, the first protective layer 130 covers the portion of the second conductive circuit layer 126 outside the pad part 122, for example, covers the wire part 121. In step 250, a light source 140 is provided on the pad portion 122. Step 260 can be selectively performed. In step 260, a second protective layer 150 is formed on the first protective layer 130 and the light source 140. The second protective layer 150 may have a uniform light structure, and/or a light-concentrating or light-scattering structure.

Now please refer to FIGS. 6A to 6C, which show another light source lamp panel 300 and the composite conductive circuit layer 320 therein, wherein FIG. 6A shows the composite conductive circuit layer 320 of the light source lamp panel 300 from a top view, but for clarity For the sake of omitting most of the other components of the light source lamp panel 300, FIGS. 6B and 6C are cross-sectional views of the light source lamp panel 300 along section line 6B-6B' and section line 6C-6C' in FIG. 6A, respectively. . The light source lamp board 300 includes a substrate 310, a composite conductive circuit layer 320, a first protective layer 330 and The light source 340, and may optionally include a second protective layer 350, wherein the substrate 310, the first protective layer 330, the light source 340, and the second protective layer 350 are similar to the corresponding components of the light source lamp board 100 described above, for simplicity, here The further description thereof is omitted, and only the focus is on the composite conductive circuit layer 320 having a difference in type.

As shown in FIGS. 6A to 6C, in the light source lamp board 300, the second conductive circuit layer 326 of the composite conductive circuit layer 320 is only provided on the pad portion 322. The lead portion 321 does not include the second conductive circuit layer 326 having a lower electrical group and a higher conductivity. For example, the wire portion 321 may be composed of the first conductive circuit layer 325 only. However, it is not excluded that the lead portion 321 is provided with another layer having a conductivity similar to or lower than that of the first conductive wiring layer 325. Similar to the composite conductive circuit layer 120, the material of the first conductive circuit layer 325 may include at least one of copper paste, nickel paste, and silver paste, and the material of the second conductive circuit layer 326 may include silver plating, tin plating, plating At least one of nickel and gold plating. In addition, the composite conductive circuit layer 320 may also include a resistance increasing portion, such as the resistance increasing portion 123B shown in FIG. 1D, to increase the length of the first conductive circuit layer 325 and/or reduce the width of the first conductive circuit layer 325 Or, similar to the resistance-increasing part 123C composite conductive circuit layer 320 has an open circuit, and a resistance device is provided in series between two opposite ends of the open circuit.

Please refer to FIG. 7, which is a flowchart of a method of manufacturing the light source lamp board 300. For simplicity, some details similar to the manufacturing method described with reference to FIG. 5 may be omitted here. At step 410, a substrate 310 is provided. In step 420, the first conductive circuit layer 325 of the composite conductive circuit layer 320 is formed on the substrate 310. Next, in step 430, a first protective layer 330 is formed first, and the first protective layer 330 exposes the pad portion 322. Then, in step 440, the first protective layer 330 is used as a mask to form the second conductive circuit layer 326 of the composite conductive circuit layer 320, and the second conductive circuit layer 326 is formed only on the pad portion 322. At step 450, a light source 340 is provided on the pad portion 322. Step 460 can be selectively performed. In step 460, a second protective layer 350 is formed on the first protective layer 330 and the light source 340.

The embodiments of the light source lamp board of the present invention and the manufacturing method thereof have been provided above. In still another aspect of the present invention, a light-emitting keyboard is provided, which uses the above-mentioned light source lamp board. The light-emitting keyboard includes a plurality of key caps and a light source lamp board. The light source lamp board is arranged under the plurality of key caps. The light source lamp board may be the light source lamp board according to any of the above embodiments. The light emitted by the light source can travel upward to reach the plurality of keycaps.

Now please refer to Figures 8A~8D, Figure 9, and Figure 10 for a further understanding of the above illuminated keyboard. FIGS. 8A to 8D respectively show the layers arranged from top to bottom according to one of the embodiments. Fig. 9 and Fig. 10 are schematic diagrams of the top and side views of one key of the light-emitting keyboard, respectively.

Please refer to FIG. 8A, which is a schematic diagram of a plurality of key caps 510 of a light-emitting keyboard. It can be understood that the keycaps 510 can be arranged in any suitable manner, and/or can have any suitable character combination, not limited to those shown in the figure. The character portion of the keycap 510 of the light-emitting keyboard, such as "?" and "/" in Figure 9, may have light transmission. In some embodiments, the characters in different positions may have different colors, for example, different colors of transparent paint are used, thereby increasing the diversity of lighting and the convenience of use.

Please refer to FIG. 8B, which is a schematic diagram of a selective membrane switch layer 520 of a light-emitting keyboard. The membrane switch layer 520 is disposed under the keycap 510. According to some embodiments, the membrane switch layer 520 may include one of the switch electrode layers 521 and the complex array support structure 522 as shown in FIG. The switch electrode layer 521 includes a plurality of switch electrodes (not shown, located below the rubber elastic body 523). When one of the plurality of key caps 510 is pressed, the corresponding switch electrode can be triggered to conduct. The support structure 522 is disposed on the switch electrode layer 521 and coupled to the corresponding keycap 510 and the bottom plate 530 respectively. The support structure 522 can support the keycap 510 to move up and down. When the keycap 510 is pressed by an external force, the keycap 510 moves downward to contact the switch electrode; when the external force disappears, the keycap 510 can be restored by a force source (such as a rubber dome) and polar The pair of repelling magnets, metal springs/shrappers) are pushed upwards and no longer touch the switch electrodes. For example, as shown in FIG. 10, each support structure 522 may include a rubber elastic body 523, a scissor structure 524, and a connection structure 525, which are commonly used in keyboards. When the key cap 510 is pressed, the rubber elastic body 523 is flattened, so that the convex column on the bottom surface of the rubber elastic body 523 is in contact with the switch electrode below it to conduct. The scissor foot structure 524 can assist in supporting the keycap 510, thereby averaging the feedback force and improving the feel. The connection structure 525 is used to couple the scissor foot structure 524 to the bottom plate 530 below. However, any other suitable structure can also be used without being limited to this. The membrane switch layer 520 may have a plurality of openings 526, and each keycap 510 corresponds to at least one of the plurality of openings 526.

Please refer to FIG. 8C, which is a schematic diagram of a selective bottom plate 530 of a light-emitting keyboard. The bottom plate 530 is disposed below the key cap 510. The bottom plate 530 has a plurality of openings 531, and each keycap 510 corresponds to at least one of the plurality of openings 531. Opening 531 may at least partially overlap the opening 526, so that the light emitted from the light source lamp board 540 can travel upward without obstruction. As shown in the embodiment of FIG. 10, the switch electrode layer 521 may be disposed on the bottom plate 530, and the light source lamp board 540 (shown in FIG. 8D) may be disposed under the bottom plate 530, and the two are separated from each other by the bottom plate 530. In addition, the connecting structure 525 may be a hook that is folded upward from the bottom plate 530 by punching and integrally formed with the bottom plate 530, as shown in FIG.

Please refer to FIG. 8D, which is a schematic diagram of the light source lamp board 540 of the light-emitting keyboard. The light source lamp board 540 may be the light source lamp board according to any of the above embodiments, such as the light source lamp board 100 or the light source lamp board 300. The opening 531 and the opening 526 partially overlap, and the light source 560 on the light source lamp board 540 is located below the overlapping portion of the opening 531 and the opening 526, so that the light emitted by the light source can pass through the opening 531 (and the opening 526) upward without obstruction and low loss Continue to reach the keycap 510. Corresponding to each keycap 510 there may be one or more light sources 560.

The substrate 541 of the light source lamp board 540 has a long side 542, a first short side 543 and a second short side 544. As shown in FIG. 8D, the light source lamp board 540 may further have a line tail 545. The cable tail 545 extends from the long side 542. The cable tail 545 has a plurality of extension wires 546 and a predetermined bending portion 547. The substrate 541 can be made of a flexible material. At a position corresponding to the predetermined bending portion 547, the base plate 541 can be flexed by an external force. The extension wire 546 can be regarded as an extension of the composite conductive circuit layer 550 at the tail portion 545 of the cable. However, no matter whether the light source lamp board 100 or the light source lamp board 300 described above is used as the light source lamp board 540, the extension wire 546 is only composed of the first conductive circuit layer in the predetermined bending portion 547, and the material itself has low flexibility Second The conductive circuit layer does not extend within the predetermined bending portion 547. In this way, the second conductive circuit layer can be prevented from being bent and broken in the predetermined bending portion 547, resulting in unstable current transmission quality of the extension wire 546.

As shown in FIG. 8D, the composite conductive circuit layer 550 may include a plurality of high potential first wires 551, a plurality of high potential second wires 552, a plurality of low potential first wires 556, and a plurality of low potential second wires 555. Here, the high-potential wire and the low-potential wire can be understood as positive and negative lines. According to some embodiments, the high-potential first wire 551 extends from the tail portion 545 of the cable to the middle of the first short side 543. The high-potential second conductive wire 552 extends from the middle position of the first short side 543 to the vicinity of the plurality of pad portions 557 substantially parallel to the long side 542. The low-potential second conducting wire 555 extends from the vicinity of the plurality of pad portions 557 substantially parallel to the long side 542 to the middle position of the second short side 544. The low-potential first wire 556 extends from the middle position of the second short side 544 to the tail portion 545 of the cable. In some embodiments, as shown in FIG. 8D, the high-potential second conductive wire 552 has a plurality of S-shaped paths 552S in the middle adjacent to the first short side 543, the plurality of S-shaped paths 552S having different lengths, thereby The adjustment makes the current values passing through the plurality of high-potential second wires 552 substantially equal. In some embodiments, the low-potential second wire 555 may also have a similar S-shaped path 555S. According to some embodiments, as shown in FIG. 8D, the light source lamp board 540 (the composite conductive circuit layer 550) may further have a plurality of high potential third wires 553 and a plurality of low potential third wires 554. Please refer to FIG. 9 together, each pad portion 557 has a positive electrode 558 and a negative electrode 559. The high-potential third conductive wire 553 and the low-potential third conductive wire 554 extend substantially parallel to the first short side 543. The high potential third conductor 553 is electrically coupled high One of the potential second wires 552 and the positive electrode 558 of the corresponding pad portion 557, and the low potential third wire 554 are electrically coupled to one of the plurality of low potential second wires 555 and the corresponding pad portion 557, respectively The negative electrode 559. It can be understood that the configuration method of the composite conductive circuit layer 550 does not need to be limited thereto, as long as it is an allowable configuration method of the light source lamp board 540. For example, in the case where the space of the light source lamp board 540 can provide greater wiring flexibility, the second high-potential wire 552 and the second low-potential wire 555 need not extend substantially parallel to the long side 542.

Referring now to FIG. 9, in some embodiments, there are at least two light sources 560 under each keycap 510. In order to provide electrical coupling for each light source 560, corresponding to each keycap 510, there may be at least two of high potential third wires 553, at least two of low potential third wires 554, and at least two pad portions 557. As shown in FIG. 9, at least two of the pad portions 557 are located below the opposite sides of the centerline 551M of the keycap 551, so that the bottom surfaces of the keycaps 510 on opposite sides of the support structure 522 can be properly received Intensity lighting. Of course, the configuration of the light source and the corresponding composite conductive circuit layer 550 need not be limited thereto. For example, in some embodiments, the design of the keycap 510 and the support structure 522 keeps the central area hollow or transparent and transparent, even if only one light source 560 is arranged under each keycap 510, it is enough to evenly illuminate the whole keycap. So far, through FIGS. 8A to 8D to FIG. 10, a specific understanding of the structural configuration of a type of light-emitting keyboard has been made. However, other types of illuminated keyboards can also be used.

For example, as shown in FIG. 10, in the above-mentioned light-emitting keyboard, from top to bottom are the keycap 510, the support structure 522 of the membrane switch layer 520, the membrane The switch electrode layer 521 of the switch layer 520, the bottom plate 530, and the light source lamp board 540, and the connection structure 525 of the support structure 522 is a hook extending upward from the bottom plate 530 and folded integrally with the bottom plate 530.

In a light-emitting keyboard according to other embodiments, as shown in FIG. 11, from top to bottom, the keycap 610, the support structure 622, the light source lamp board 640, the switch electrode layer 621, and the bottom plate 630 can be supported in order. The connection structure 625 of the structure 622 is also a hook extending from the bottom plate 630 and integrally formed with the bottom plate 630. The difference between this kind of light-emitting keyboard and the light-emitting keyboard in FIG. 10 lies in the position of the light source lamp board 640, which is located above the switch electrode layer 621.

In the light-emitting keyboard according to still other embodiments, as shown in FIG. 12, from top to bottom are the keycap 710, the support structure 722, the switch electrode layer 721, the bottom plate 730, and the light source lamp board 740, and the support structure The connecting structure 725 of 722 is a connecting plastic member coupled to the bottom plate 730. The difference between this light-emitting keyboard and the light-emitting keyboard in FIG. 10 is the design of the connection structure.

In the light-emitting keyboard according to still other embodiments, as shown in FIG. 13, from top to bottom are the keycap 810, the support structure 822, the light source lamp board 840, the switch electrode layer 821, and the bottom plate 830, and the support structure The connection structure 825 of 822 is a connection plastic member bonded to the switch electrode layer 821. The difference between this kind of light-emitting keyboard and the light-emitting keyboard in FIG. 12 is the position of the light source lamp board 840 and the arrangement of the connection structure 825. The light source lamp board 840 is located above the switch electrode layer 821, and the connection structure 825 is coupled to the switch electrode layer 821 instead of Bottom plate 830.

In the light-emitting keyboard according to still other embodiments, as shown in FIG. 14, the keycap 910, the support structure 922, the switch electrode layer 921, the light source lamp board 940, and the bottom plate 930 are supported in order from top to bottom. The connection structure 925 of the structure 922 is a connection plastic member bonded to the switch electrode layer 921. The difference between this light-emitting keyboard and the light-emitting keyboard in FIG. 13 is the position of the light source lamp board 940, which is located between the switch electrode layer 921 and the bottom plate 930.

Regardless of the type, in the light-emitting keyboard according to the embodiment, a light source is provided under each keycap, so uniformity of light emission can be ensured. In addition, since the light source is used to emit light, compared with the light-emitting keyboard with a backlight module having a light guide plate, the thickness of the keyboard can be further reduced and the power consumption can be reduced.

In summary, although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs can make various modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be deemed as defined by the scope of the attached patent application.

100‧‧‧Light source lamp board

110‧‧‧ substrate

120‧‧‧composite conductive circuit layer

121‧‧‧Wire Department

122‧‧‧Pad part

125‧‧‧ First conductive circuit layer

126‧‧‧Second conductive circuit layer

130‧‧‧The first protective layer

140‧‧‧Light source

150‧‧‧Second protective layer

Claims (22)

A light source lamp board includes: a substrate having a long side, a first short side and a second short side; a composite conductive circuit layer is disposed on the substrate, the composite conductive circuit layer has : A wire portion, which is composed of at least a first conductive circuit layer; and a plurality of pad portions, the plurality of pad portions are at least composed of the first conductive circuit layer and stacked on the first conductive circuit A second conductive circuit layer on the layer, the conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer, the lead portion is electrically coupled to the plurality of pad portions; a first A protective layer is disposed on the composite conductive circuit layer and exposes the plurality of pad portions; a plurality of light sources are respectively disposed on the plurality of pad portions; and a row of wire tails, wherein the composite conductive circuit layer is more Including: a plurality of high-potential first wires, the plurality of high-potential first wires extending from the tail of the cable to the middle position of the first short side; a plurality of high-potential second wires, the plurality of high-potential second wires Extending from the middle position of the first short side to the vicinity of the plurality of pad portions substantially parallel to the long side; A plurality of low-potential second wires, the plurality of low-potential second wires extending from the vicinity of the plurality of pad portions substantially parallel to the long side to the middle position of the second short side; and the plurality of low-potential first A wire, the plurality of low-potential first wires extending from the middle of the second short side to the tail of the cable. The light source lamp panel as described in item 1 of the patent application scope, wherein the lead portion further includes the second conductive circuit layer. The light source lamp panel as described in Item 1 of the patent application scope, wherein the second conductive circuit layer is only provided on the plurality of pad portions. The light source lamp panel as described in item 1 of the patent application scope, wherein the material of the first conductive circuit layer includes at least one of copper paste, nickel paste, and silver paste, and the material of the second conductive circuit layer includes silver plating , Tin plating, nickel plating, and gold plating. The light source lamp board as described in item 1 of the patent application range, wherein the light source lamp board further has a plurality of high potential third wires and a plurality of low potential third wires, each of the pad parts has a positive electrode and a negative electrode Electrodes, the plurality of high potential third wires and the plurality of low potential third wires extend substantially parallel to the first short side, the plurality of high potential third wires are electrically coupled to the plurality of high potentials, respectively One of the second wires and the positive electrode of the corresponding pad part, the plurality of low-potential third wires are electrically coupled to one of the plurality of low-potential second wires and the corresponding one of the pad part, respectively The negative electrode. The light source lamp panel as described in item 1 of the patent application range, wherein the plurality of high-potential second wires respectively have a plurality of S-shaped paths in the middle position adjacent to the first short side, and the plurality of S-shaped paths have different lengths , So that the current values passing through the plurality of high-potential second wires are substantially equal. A light source lamp board includes: a substrate having a long side, a first short side and a second short side; a composite conductive circuit layer is disposed on the substrate, the composite conductive circuit layer has : A wire portion, which is composed of at least a first conductive circuit layer; and a plurality of pad portions, the plurality of pad portions are at least composed of the first conductive circuit layer and stacked on the first conductive circuit A second conductive circuit layer on the layer, the conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer, the lead portion is electrically coupled to the plurality of pad portions; a first A protective layer is disposed on the composite conductive circuit layer and exposes the plurality of pad portions; and a plurality of light sources are respectively disposed on the plurality of pad portions; wherein the substrate is composed of a flexible material, The light source lamp board further has a row of tails, the tail of the row has a plurality of extension wires and a predetermined bending part, and the substrate can be flexed by an external force at a position corresponding to the predetermined bending part. The extension wire is only composed of the first conductive circuit layer in the predetermined bending portion, and the second conductive circuit layer does not extend in the predetermined bending portion. A light source lamp board includes: a substrate having a long side, a first short side and a second short side; a composite conductive circuit layer is disposed on the substrate, the composite conductive circuit layer has : A wire portion, which is composed of at least a first conductive circuit layer; and a plurality of pad portions, the plurality of pad portions are at least composed of the first conductive circuit layer and stacked on the first conductive circuit A second conductive circuit layer on the layer, the conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer, the lead portion is electrically coupled to the plurality of pad portions; a first A protective layer is disposed on the composite conductive circuit layer and exposes the plurality of pad portions; and a plurality of light sources are respectively disposed on the plurality of pad portions; wherein the composite conductive circuit layer further includes a resistance increasing portion , The resistance increasing portion is not provided with the second conductive wiring layer, increasing the length of the first conductive wiring layer at the resistance increasing portion or reducing the width of the first conductive wiring layer at the resistance increasing portion, and/or Set up a resistance device. A light source lamp board, including: A substrate, the substrate has a long side, a first short side and a second short side; a composite conductive circuit layer is provided on the substrate, the composite conductive circuit layer has: a wire portion, the wire The part is composed of at least a first conductive circuit layer; and a plurality of pad parts, the plurality of pad parts are at least composed of the first conductive circuit layer and a second conductive layer stacked on the first conductive circuit layer The circuit layer is formed, the conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer, the wire part is electrically coupled to the plurality of pad parts; a first protective layer is provided on the composite A plurality of pad portions exposed on the conductive circuit layer; a plurality of light sources are respectively disposed on the plurality of pad portions; and a second protective layer is disposed on the first protective layer and the light sources, The second protective layer has a uniform light structure, and/or a light-concentrating or light-scattering structure. A method for manufacturing a light source lamp board includes: providing a substrate with a long side, a first short side and a second short side; forming a composite conductive circuit layer on the substrate, wherein the compound The conductive circuit layer has a wire portion and a plurality of pad portions, the wire portion is electrically coupled to the plurality of pad portions, and forming the composite conductive circuit layer includes: forming a first conductive circuit layer on the substrate; and Forming a second conductive circuit layer on the first conductive circuit layer, the conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer; wherein the wire portion is at least composed of the first conductive circuit layer The plurality of pad portions is composed of at least the first conductive circuit layer and the second conductive circuit layer stacked on the first conductive circuit layer; a first protection is formed on the composite conductive circuit layer Layer, the first protective layer exposes the plurality of pad parts; and a plurality of light sources are provided on the plurality of pad parts, wherein forming the first protective layer is performed after forming the second conductive circuit layer, the The first protective layer covers the portion of the second conductive circuit layer outside the plurality of pad portions. The method for manufacturing a light source lamp board as described in item 10 of the patent application scope, wherein forming the first conductive circuit layer includes performing a printing process, and forming the second conductive circuit layer includes performing a coating process. The method for manufacturing a light source lamp board as described in item 11 of the patent application range, wherein the printing process includes coating a conductive paste, the conductive paste being at least one of copper paste, nickel paste, and silver paste. The method for manufacturing a light source lamp panel as described in item 11 of the patent application range, wherein the coating process includes electroplating or electroplating a metal, the metal being at least one of silver, tin, nickel, and gold. A method for manufacturing light source lamp board, including: A substrate is provided, the substrate has a long side, a first short side and a second short side; a composite conductive circuit layer is formed on the substrate, wherein the composite conductive circuit layer has a wire portion and a plurality of A pad portion, the wire portion is electrically coupled to the plurality of pad portions to form the composite conductive circuit layer includes: forming a first conductive circuit layer on the substrate; and forming a first conductive circuit layer on the first conductive circuit layer Two conductive circuit layers, the conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer; wherein the wire portion is at least composed of the first conductive circuit layer, and the plurality of pad portions are at least Consisting of the first conductive circuit layer and the second conductive circuit layer stacked on the first conductive circuit layer; forming a first protective layer on the composite conductive circuit layer, the first protective layer exposing the plural Pad parts; and providing a plurality of light sources on the pad parts; wherein forming the second conductive circuit layer is performed after forming the first protective layer, using the first protective layer as a mask. A method for manufacturing a light source lamp board includes: providing a substrate with a long side, a first short side and a second short side; forming a composite conductive circuit layer on the substrate, wherein the compound The conductive circuit layer has a wire portion and a plurality of pad portions. The wire portion is electrically coupled to the plurality of pad portions to form the composite conductive circuit layer includes: Forming a first conductive circuit layer on the substrate; and forming a second conductive circuit layer on the first conductive circuit layer, the conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer; Wherein the wire portion is composed of at least the first conductive circuit layer, and the plurality of pad portions is composed of at least the first conductive circuit layer and the second conductive circuit layer stacked on the first conductive circuit layer Forming a first protective layer on the composite conductive circuit layer, the first protective layer exposing the plurality of pad portions; a plurality of light sources are provided on the plurality of pad portions; and the first protective layer and A second protective layer is formed on the plurality of light sources, wherein the second protective layer has a uniform light structure and/or a light-concentrating or light-scattering structure. A light-emitting keyboard, comprising: a plurality of key caps; and a light source lamp board, arranged under the plurality of key caps, comprising: a substrate, the substrate has a long side, a first short side and a second short Side; a composite conductive circuit layer, disposed on the substrate, the composite conductive circuit layer has: a wire portion, the wire portion is at least composed of a first conductive circuit layer; and a plurality of pad portions, the plurality of Each pad portion is composed of at least the first conductive circuit layer and a second conductive circuit layer stacked on the first conductive circuit layer The conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer, the lead portion is electrically coupled to the plurality of pad portions; a first protective layer is provided on the composite conductive circuit layer And expose the plurality of pad parts; the plurality of light sources are respectively disposed on the plurality of pad parts, and the light emitted by the plurality of light sources can travel upward to reach the plurality of key caps; and a second protection A layer is disposed on the first protective layer and the light sources, and the second protective layer has a uniform light structure and/or a light-concentrating or light-scattering structure. A light-emitting keyboard, comprising: a plurality of key caps; and a light source lamp board, arranged under the plurality of key caps, comprising: a substrate, the substrate has a long side, a first short side and a second short Side; a composite conductive circuit layer, disposed on the substrate, the composite conductive circuit layer has: a wire portion, the wire portion is at least composed of a first conductive circuit layer; and a plurality of pad portions, the plurality of Each pad portion is composed of at least the first conductive circuit layer and a second conductive circuit layer stacked on the first conductive circuit layer, the second conductive circuit layer has higher conductivity than the first conductive circuit layer Conductivity, the wire part is electrically coupled to the plurality of pad parts; A first protective layer is disposed on the composite conductive circuit layer and exposes the plurality of pad portions; and a plurality of light sources are respectively disposed on the plurality of pad portions, and the light emitted by the plurality of light sources can be directed upward To reach the plurality of keycaps; wherein the light source lamp panel further has a row of tails, the row of tails has a plurality of extension wires and a predetermined bending portion, the plurality of extension wires in the predetermined bending portion only consists of The first conductive circuit layer is formed, and the second conductive circuit layer does not extend within the predetermined bending portion. A light-emitting keyboard, comprising: a plurality of key caps; and a light source lamp board, arranged under the plurality of key caps, comprising: a substrate, the substrate has a long side, a first short side and a second short Side; a composite conductive circuit layer, disposed on the substrate, the composite conductive circuit layer has: a wire portion, the wire portion is at least composed of a first conductive circuit layer; and a plurality of pad portions, the plurality of Each pad portion is composed of at least the first conductive circuit layer and a second conductive circuit layer stacked on the first conductive circuit layer, the second conductive circuit layer has higher conductivity than the first conductive circuit layer Conductivity, the wire part is electrically coupled to the plurality of pad parts; A first protective layer is disposed on the composite conductive circuit layer and exposes the plurality of pad portions; and a plurality of light sources are respectively disposed on the plurality of pad portions, and the light emitted by the plurality of light sources can be directed upward To reach the plurality of keycaps; wherein the light source lamp board further has a row of wire tails, wherein the composite conductive circuit layer includes: a plurality of high-potential first wires, the plurality of high-potential first wires run from the tail Extending to the middle position of the first short side; a plurality of high potential second wires, the plurality of high potential second wires extending from the middle position of the first short side to the plurality of substantially parallel to the long side Near the pad portion; a plurality of low-potential second wires extending from the vicinity of the plurality of pad portions to the middle position of the second short-side side substantially parallel to the long-side side; and A plurality of low-potential first wires, the plurality of low-potential first wires extend from the middle position of the second short side to the tail of the cable. The luminous keyboard as described in item 18 of the patent application range, wherein the plurality of high-potential second wires respectively have a plurality of S-shaped paths in the middle position adjacent to the first short side, and the plurality of S-shaped paths have different lengths, Through this adjustment, the current values passing through the plurality of high-potential second wires are substantially equal. A luminous keyboard, including: a plurality of keycaps; and A light source lamp board, disposed under the plurality of key caps, includes: a substrate having a long side, a first short side, and a second short side; a composite conductive circuit layer disposed on the On the substrate, the composite conductive circuit layer has: a wire portion, the wire portion is composed of at least a first conductive circuit layer; and a plurality of pad portions, the plurality of pad portions are at least composed of the first conductive circuit Layer and a second conductive circuit layer stacked on the first conductive circuit layer, the conductivity of the second conductive circuit layer is higher than that of the first conductive circuit layer, and the wire portion is electrically coupled to the A plurality of pad parts; a first protective layer disposed on the composite conductive circuit layer and exposing the plurality of pad parts; and a plurality of light sources respectively disposed on the plurality of pad parts, the plurality of The light emitted by the light source can travel upward to reach the plurality of keycaps; wherein the light source lamp board further has a plurality of high potential third wires and a plurality of low potential third wires, each of the pad parts has a positive electrode and a Negative electrode, the plurality of high potential third wires and the plurality of low potential third wires extend substantially parallel to the first short side, the plurality of high potential third wires are electrically coupled to the plurality of high wires respectively One of the potential second wires and the positive electrode of the corresponding pad portion, the plurality of low potential third wires are electrically coupled to one of the plurality of low potential second wires and the corresponding pad portion, respectively The negative electrode. The illuminated keyboard as described in item 20 of the patent application range, corresponding to each keycap has at least two of the plurality of high-potential third wires and at least two of the plurality of low-potential third wires, At least two of the pad portions, and at least two of the pad portions are respectively located under opposite sides of the centerline of the keycap. A light-emitting keyboard, comprising: a plurality of key caps; a light source lamp board, arranged under the plurality of key caps, comprising: a substrate, the substrate has a long side, a first short side and a second short side Side; a composite conductive circuit layer, disposed on the substrate, the composite conductive circuit layer has: a wire portion, the wire portion is at least composed of a first conductive circuit layer; and a plurality of pad portions, the plurality of The pad portion is composed of at least the first conductive circuit layer and a second conductive circuit layer stacked on the first conductive circuit layer, the second conductive circuit layer has a higher conductivity than the first conductive circuit layer Conductivity, the lead portion is electrically coupled to the plurality of pad portions; a first protective layer is disposed on the composite conductive circuit layer and exposes the plurality of pad portions; and the plurality of light sources are respectively disposed at On the plurality of pad parts, the light emitted by the plurality of light sources can travel upward to reach the plurality of keycaps; and A bottom plate is disposed under the plurality of key caps, the bottom plate has a plurality of openings, each key cap corresponds to at least one of the plurality of openings, and the plurality of light sources are located under the plurality of openings, so that the The light emitted by the plurality of light sources can pass through the plurality of openings and travel upward to reach the plurality of key caps.

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