JP2003194590A - Display board, display device fitted with the same, and displaying method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display board, a display device provided with the display board, and a displaying method which ensure a high visibility of each light transmission part for a design regardless of the brightness of the periphery of the display device, even when the color of a ground color layer and the transmission display color of each light transmission part for a design are approximate colors, or colors of the same system. <P>SOLUTION: The display board (40) is provided with a substrate (45) having a rear surface which light enters and a front surface from which at least a part of the incident light is emitted, a smoked layer (42) formed either on the front surface side or on the rear surface side of the substrate (45), and a low-density smoked layer (41) which is formed either on the front surface side or on the rear surface side of the substrate (45) and has a capability for light transmission higher than the smoked layer (42), and the ground color layer (43) formed on the front surface side of the substrate so as to form each light transmission part (30) for a design for transmission-displaying a symbol. Each transmission part (30) is provided with a low-brightness part (32) which corresponds to the smoked layer (42), and a high- brightness part (31) which corresponds to the low-density layer (41) and has a brightness higher than the low-brightness part (32), so that the whole transmission part (30) is transmission-displayed with light transmitted by the smoked layer (42) and light transmitted by the low-density layer (41). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display plate, a display device provided with the display plate, and a display method, and more particularly, to a display plate with improved visibility of a design light-transmitting portion, and the display plate. The present invention relates to a display device and a display method for improving the visibility of a design translucent portion.

[0002]

2. Description of the Related Art Conventionally, many devices for carrying people, objects, etc., are equipped with a display device for displaying various states of the device. In a vehicle that is one of the devices for carrying such people, things, etc., for example, a turn signal design translucent part, a gear position design translucent part, various warning design translucent parts, a speed display part, a fuel remaining A display device having a design light transmitting portion such as a quantity display portion is provided. Most display devices have a plurality of light sources for illuminating each of the design light-transmitting parts, and particularly the warning design light-transmitting parts and the like are visible when the light sources are turned on.

For example, Japanese Patent Laid-Open No. 2000-213966 discloses a display device for a vehicle. A conventional display device disclosed in this publication will be described with reference to FIGS. FIG. 15 is a partial sectional view of a conventional display device,
16 is a front view of an engine oil symbol which is a warning design light transmitting portion in the display device of FIG.

As shown in FIG. 15, the display device 1 is provided with a display plate 4, which is provided in front of a lamp chamber 3 formed by partitioning a case 10 by a partition wall 2. There is. Further, the display device 1 includes a light emitting diode 12 as a light source, and the light emitting diode 12 is arranged on the printed wiring board 5 provided in the rear of the lamp chamber 3 toward the lamp chamber 3 and has a printed wiring. It is electrically connected to the plate 5. As the light emitting diode 12, for example, a light emitting diode having a red light emission color is used. An engine oil symbol 14 is formed as a light-transmitting warning design light-transmitting portion on the display plate 4. As shown in FIG. 16, the engine oil symbol 14 is composed of a container display portion 21 and a drop display portion 20.

The display board 4 is made of a black light impermeable ink except for a colorless transparent substrate 13 and a portion corresponding to the engine oil symbol 14 so that the engine oil symbol 14 is formed on the front surface of the substrate 13. The formed ground color layer 15, a black semi-transmissive layer 16 formed on the ground color layer 15 and the engine oil symbol (that is, the portion where the ground color layer 15 is not formed on the substrate 13) 14, And a transparent matte non-reflective layer 17 formed on the entire surface of the transmissive layer 16.

Further, the display board 4 is provided on the rear surface of the substrate 13,
Black light shielding layer 19, transparent coloring layer 22, and light diffusion layer 2
3 and 3 are provided. The light shielding layer 19 is the light emitting diode 1
When 2 emits light, at least a portion facing the engine oil symbol 14 with the substrate 13 interposed therebetween is excluded so that the red light does not pass through the substrate 13 and other adjoining design light-transmitting portions are not visually recognized as light red. It is provided on the rear surface of the substrate 13. The transparent colored layer 22 is a red layer that is substantially the same as the red light of the light emitting diode 12, and is provided corresponding to the container display portion 21 excluding the drop display portion 20 of the engine oil symbol 14. The light diffusion layer 23 is provided corresponding to the droplet display portion 20 of the engine oil symbol 14 for the purpose of diffusing light from the light emitting diode 12.

In the display device 1 thus constructed, when the light emitting diode 12 emits light, the engine oil symbol 14 is transmissively displayed in red light. In particular, since the transparent colored layer 22 and the light diffusion layer 23 are provided, the transmission brightness of the entire engine oil symbol 14 becomes substantially uniform, and the entire engine oil symbol 14 can be transparently displayed in a well-balanced manner. In other words, the display device 1 includes the light emitting diode 12
In order to equalize the amount of light transmitted through the entire engine oil symbol 14 when light is emitted, the above-described transparent colored layer 22 and light diffusion layer 23 are provided. On the other hand, when the light emitting diode 12 is not emitting light, the black semi-transmissive layer 1
The engine oil symbol 14 is less visible because the display plate 4 is provided with 6.

[0008]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In Japanese Patent Laid-Open No. 00-213966, a black ground color layer 15 is used as a background color of the engine oil symbol 14 on the display plate 4. However, the color of the ground color layer 15 is not limited to black because it is selected from various colors according to the actual product specifications of the display device. When the ground color layer 15 is an approximate color or a similar color (for example, amber color) of the engine oil symbol 14 that is transmitted and displayed with red light, even if the light emitting diode 12 that is the light source emits light, the engine oil symbol It becomes difficult to visually recognize 14. Moreover, even if the ground color layer 15 is black,
If the engine oil symbol 14 is displayed in blue light, for example, it is difficult to visually recognize the engine oil symbol 14. In these cases, there is a possibility that the purpose of the engine oil symbol 14 as a warning design light transmitting portion may not be achieved. Further, when the light source is emitting light, high visibility of the warning design translucent portion is required day or night. Therefore, in consideration of bright surroundings of the display device such as daytime, it is necessary to improve the visibility by displaying the warning design translucent portion with high brightness. However, the warning design translucent part adjusted to high brightness in consideration of the bright surroundings of the display device dazzles the driver, driver, etc. when the surroundings of the display device are dark at night. there is a possibility.

The present invention has been made in view of the above problems, and an object thereof is to provide a display device even when the color of the ground color layer and the transmissive display color of the design light-transmitting portion are similar colors or similar colors. It is an object of the present invention to provide a display plate capable of ensuring high visibility of the design light-transmitting portion regardless of the brightness of the surroundings, a display device including the display plate, and a display method.

[0010]

In order to achieve the above-mentioned object, the display panel of the present invention has, as described in claim 1, a rear surface on which light is incident and at least a part of the incident light. A substrate having a front surface from which is emitted, a smoke layer provided on one of the front surface side and the rear surface side of the substrate, and provided on one of the front surface side and the rear surface side of the substrate,
A thin concentration smoke layer having a light transmittance higher than that of the smoke layer, and a light-shielding layer provided on the front surface side of the substrate so as to define a design light-transmitting portion for transmitting and displaying one symbol, Light transmitted through the smoke layer and light transmitted through the low-density smoke layer so that the entire design light-transmitting portion is transmissively displayed, the design light-transmitting portion is a low-brightness portion corresponding to the smoke layer, And a high brightness portion corresponding to the low density smoke layer and having a higher brightness than the low brightness portion.

Further, the display device of the present invention is a display device having a display plate and a light source behind the display plate, as described in claim 3, wherein the display plate emits light from the light source. A substrate having a rear surface on which light is incident and a front surface from which at least a part of the incident light is emitted, a smoke layer provided on one of the front surface side and the rear surface side of the substrate, and the front surface side and the rear surface of the substrate. Provided on one of the side, a light smoke layer having a higher light transmittance than the smoke layer,
A light-shielding layer provided on the front side of the substrate so as to define a design light-transmitting portion for transmitting and displaying one symbol, and the light transmitted through the smoke layer and the light transmitted through the thin smoke layer. The design light-transmitting portion corresponds to the low-brightness portion corresponding to the smoke layer, and the low-density smoke layer, so that the entire design light-transmitting portion is transmissively displayed. Is characterized by having a high brightness portion.

Further, as described in claim 5, the display method of the present invention includes a substrate having a rear surface on which light is incident and a front surface on which at least a part of the incident light is emitted, and the substrate Smoke layer is formed on one of the front surface side and the rear surface side of the substrate, and on one of the front surface side and the rear surface side of the substrate,
A light-density smoke layer having a higher light transmittance than the smoke layer is formed, and a light-shielding layer is formed on the front surface side of the substrate so as to define a design light-transmitting portion that transmits and displays one symbol.
The low-luminance portion corresponding to the smoke layer, and the low-density smoke layer, so that the entire design light-transmitting portion is transmissively displayed by the light transmitted through the smoke layer and the light transmitted through the low-density smoke layer. Correspondingly, a high-luminance portion having a higher luminance than the low-luminance portion is formed in the design light-transmitting portion.

According to the first, third and fifth aspects of the present invention, the light-transmitting portion of the design plate (that is, one symbol Even if the color of the light-shielding layer (that is, the background of the design light-transmitting portion) and the transmission display color of the design light-transmitting portion are similar colors or similar colors, since at least a part of () can have higher brightness than other portions. The high visibility of the design translucent part can be secured. Furthermore, even when the surroundings of the display device are bright in the daytime or when the surroundings of the display device are dark such as at night, high visibility of the design translucent portion can be ensured regardless of the brightness of the surroundings of the display device. In particular, when the surroundings of the display device are dark such as at night, it is possible to eliminate the possibility that the driver, the driver, etc. will be dazzled by seeing the design translucent part. It should be noted that in the present invention, not only the smoke layer but also the low-density smoke layer is provided to positively establish the brightness difference in the design light-transmitting portion, so that it is noted that it is different from the brightness unevenness of the design light-transmitting portion. Should be.

Further, according to the present invention, since at least the smoke layer, the light smoke layer and the light shielding layer are formed on the substrate by printing, the smoke layer and the light smoke layer are formed. The manufacturing cost can be suppressed as compared with the case where another member having the same function as the light shielding layer is attached to the substrate.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading the embodiments of the invention described below with reference to the accompanying drawings.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a design translucent portion in a display plate to which the present invention is applied, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIGS.
2 is a view showing a plurality of modified examples of the display plate of FIG. 2, FIG.
Is a front view showing an example of the entire display plate, and FIG. 14 is an exploded perspective view showing an example of the configuration of the display device.

As shown in FIG. 1, the display plate 40 has a design light transmitting portion 30. The present embodiment will be described by using a high beam symbol, which is constituted by a lamp display portion and a bright line display portion and functions as a warning design light transmitting portion that is turned on when the high beam of the vehicle is used, as a non-limiting example of the design light transmitting portion 30. The design light-transmitting portion 30 includes a low-luminance portion 32 and a high-luminance portion 31 having a higher luminance than the low-luminance portion 32.
have. In FIG. 1, the high brightness part 31 (in this example)
Although it is provided in the approximate center of the lamp display portion in the high beam symbol, it is not limited to this. That is, as long as the object of the present invention can be achieved, the position of the high-intensity part 31 may be anywhere, and for example, the bright line display portion in the high beam symbol may be the high-intensity part 31. However, it is preferable to determine the position of the high-luminance portion 31 in consideration of the design quality and the product specifications.

As shown in FIG. 2, the display device 100 includes a display plate 40 and a light source 50. Various appropriate lighting devices can be applied to the light source 50. The display plate 40 has a substrate 45 having a rear surface on which light is incident and a front surface on which at least a part of the incident light is emitted. For the substrate 45, a colorless and transparent synthetic resin sheet or a colored synthetic resin sheet having a light diffusing property is appropriately used. Examples of the colorless and transparent synthetic resin sheet include a polycarbonate sheet, and examples of the light-diffusing synthetic resin sheet include an acrylic resin sheet.
It is preferable that the light source 50 forms a uniform illuminance distribution on the display plate 40. Further, in order to form a uniform illuminance distribution on the display plate 40 of the light source 50, a colored synthetic resin sheet having a light diffusing property may be appropriately used for the substrate 45.

A smoke layer 42, which is, for example, a black semi-transmissive layer, is formed on the front surface of the substrate 45. Further, on the front surface of the substrate 45, a thin concentration smoke layer 41 is formed as a semi-transmissive layer of, for example, black having a higher light transmittance than that of the smoke layer 42. By providing the smoke layer 42 and the low-density smoke layer 41, it becomes difficult for the design translucent portion 30 to be visually recognized when the light source 50 is not lit. Further, on the front surface of the substrate 45, for example, a black ground color layer 43 is formed as a light shielding layer that defines the design light transmitting portion 30. That is, the ground color layer 43 forms the background color of the design light transmitting portion 30. The ground color layer 43 may be a layer that exhibits light opacity by itself, but it is semi-transparent so that it finally exhibits light opacity by overlapping with other layers (for example, the smoke layer 42). It may be a layer. On the other hand, on the rear surface of the substrate 45, for example, a black rear light shielding layer 44 is formed. Rear light shielding layer 4
When the light source 50 emits light, reference numeral 4 indicates at least a portion facing the design light-transmitting portion 30 with the substrate 45 sandwiched between them so that other light-transmitting portions adjacent to each other are not visually recognized by the light passing through the substrate 45. It is provided excluding. The rear surface light-shielding layer 44 may be a layer that exhibits light opacity by itself, or may be a semi-transparent layer that finally exhibits light opacity by overlapping with other layers.

The light-density smoke layer 41, the smoke layer 42, the ground color layer 43, and the rear light-shielding layer 44 are formed by printing on the substrate 45. The smoke layer 42, the light-density smoke layer 41, and the ground For the color layer 43, the substrate 4 is arranged in this order.
FIG. 2 shows that it is printed on the front side of the 5. By forming each layer by printing, the manufacturing cost can be suppressed as compared with the case where another member having the same function is attached to the substrate 45.

When the light source 50 is turned on, the entire design light transmitting portion 30 is transmissively displayed by the light transmitted through at least the smoke layer 42 and the light smoke layer 41. The low-luminance portion 32 of the design light-transmitting portion 30 corresponds to the smoke layer 42, and the high-luminance portion 31 corresponds to the low-density smoke layer 41. Therefore, the high brightness portion 31 has a higher brightness than the low brightness portion 32.

Regarding the setting of the density relating to the light transmittance of each of the smoke layer 42 and the light smoke layer 41, the density at which the visibility of the design light-transmitting portion 30 is improved is considered in consideration of the brightness of the light source 50. Determine the optimal concentration. In particular, the density of the light density smoke layer 41 is set in consideration of the bright surroundings of the display device such as daytime, while the density of the smoke layer 42 is
In consideration of dark surroundings of the display device, such as at night, the brightness is adjusted to obtain the required brightness. Incidentally, in the present invention, not only the smoke layer 42 but also the low concentration smoke layer 41
It should be noted that this is different from the mere brightness unevenness of the design light-transmitting portion because the brightness difference is positively established in the design light-transmitting portion 30 by also providing.

According to the present invention, for example, the design light transmitting portion 30.
Is blue and the ground color layer 43 is black, or the design light transmitting portion 30 is white and the ground color layer 43 is gray, or the design light transmitting portion 30. Even if the transmissive display color of the design translucent portion 30 and the color of the ground color layer 43 are similar colors or similar colors, such as when the transmissive display color of the background color is red and the color of the ground color layer 43 is amber. It is possible to secure high visibility of the design translucent portion 30 regardless of the brightness around 100.

If the design of the transparent display color of the design light transmitting portion 30 is blue, for example, a blue synthetic resin sheet is used as the substrate 4.
When used as 5, the light emission color of the light source 50 may be white.
When the emission color of the light source 50 is blue, a colorless and transparent synthetic resin sheet or a white synthetic resin sheet having a light diffusing property may be used as the substrate 45. However,
When the substrate 45 has a blue color, the appearance (that is, black out) of the display plate 40 when the light source 50 is not lit can be improved. It is also effective to use a blue synthetic resin sheet having a light diffusing property as the substrate 45. The smoke layer 42 and the light smoke layer 41 have a light diffusive property.
May be prepared.

Next, a modification of the above-described embodiment of the present invention will be described with reference to FIGS.

(First Modification) FIG. 3 shows a first modification of the display plate 40 shown in FIG. Display board 4 of display device 100A
At 0 A, the low density smoke layer 41 and the smoke layer 42
Are formed without contact.

(Second Modification) FIG. 4 shows a second modification of the display plate 40 of FIG. Display board 4 of display device 100B
At 0B, as in FIG. 2, the light smoke layer 41 is in contact with the smoke layer 42, and the smoke layer 42 covers the ground color layer 43.

(Third Modification) FIG. 5 shows a third modification of the display plate 40 shown in FIG. Display board 4 of display device 100C
0C is a transparent and colorless non-reflective layer 46 formed on the front surface of the display panel 40 of FIG. The non-reflective layer 46 suppresses reflection of the surface of the display plate 40C by external light and makes the display device 100C easy to see. Of course, the application of the third modification to the first and second modifications is also effective.

(Fourth Modification) FIG. 6 shows a fourth modification of the display plate 40 of FIG. Display board 4 of display device 100D
0D is a colored light diffusion layer 47 on the rear surface of the display panel 40 of FIG.
Is formed. Light incident on the substrate 45 is made uniform by the light diffusion layer 47, and the low-brightness portion 3 of the design light-transmitting portion 30.
Improve the appearance of 2. In this case, the substrate 45 may not have the light diffusing property. Instead of the light diffusion layer 47, a light diffusion sheet may be attached to the substrate 45 with an adhesive or the like.
Of course, the application of the fourth modified example to the first modified example to the third modified example is also effective.

(Fifth Modification) FIG. 7 shows a fifth modification of the display plate 40 shown in FIG. 2, and particularly shows a modification of the display plate 40D shown in FIG. The display plate 40E of the display device 100E has the colored layer 48 formed between the light diffusion layer 47 and the substrate 45 of FIG. When the colored layer 48 has, for example, a blue color, the appearance of the display plate 40E when the light source 50 is not lit (that is,
Black out) can be improved. Of course, the application of the fifth modified example to the first modified example to the fourth modified example is also effective.

(Sixth Modification) FIG. 8 shows a sixth modification of the display plate 40 of FIG. Display board 4 of display device 100F
At 0F, the light smoke layer 41 and the smoke layer 42
Are formed on the rear surface of the substrate 45. Of course, the application of the sixth modified example to the first modified example to the fifth modified example is also effective.

(Seventh Modification) FIG. 9 shows a seventh modification of the display plate 40 shown in FIG. 2, and particularly shows a modification to the display plate 40F shown in FIG. In the display plate 40G of the display device 100G, a colorless transparent non-reflective layer 4 is provided on the front surface of the display plate 40F of FIG.
6 is formed. Of course, application of the seventh modified example to the first modified example to the sixth modified example is also effective.

(Eighth Modification) FIG. 10 shows the display plate 40 of FIG.
8 shows an eighth modified example of the display plate 40F shown in FIG. The display plate 40H of the display device 100H is
A colored light diffusion layer 47 is formed on the rear surface of the light smoke layer 41 and the smoke layer 42. The light diffusing layer 47 uniformizes the light incident on the substrate 45 through the lightly-concentrated smoke layer 41 or the smoke layer 42.
The appearance of the high brightness part 31 and the low brightness part 32 of 0 is improved. In this case, the low density smoke layer 41 and the smoke layer 4
2 and the substrate 45 may not have light diffusivity. Instead of the light diffusing layer 47, a light diffusing sheet may be attached to the light smoke layers 41 and 42 with an adhesive or the like.
Of course, application of the eighth modified example to the first modified example to the seventh modified example is also effective.

(Ninth Modification) FIG. 11 shows the display plate 40 of FIG.
9 shows a ninth modified example of the display panel 40F shown in FIG. The display plate 40I of the display device 100I is
The colored layer 48 is formed on the substrate 45 of FIG.
When the colored layer 48 has, for example, blue, the appearance of the display plate 40I when the light source 50 is not lit (that is, black out)
Can be improved. Of course, the first modified example to the eighth modified example of the ninth modified example
The application to the modification is also effective.

(Tenth Modification) FIG. 12 shows the display plate 4 of FIG.
0 shows a tenth modification, and particularly shows a modification to the display board 40I of FIG. Display board 40 of display device 100J
J is a light-diffusing layer 47 having a color formed on the rear surface of the light smoke layer 41 and the smoke layer 42. Light diffusion layer 4
7, the light incident on the substrate 45 through the light smoke layer 41 or the smoke layer 42 is made uniform, and the appearance of the high-luminance portion 31 and the low-luminance portion 32 of the design translucent portion 30 is improved. In this case, the light smoke layer 41, the smoke layer 42, and the substrate 45 may not have light diffusivity. Instead of the light diffusing layer 47, a light diffusing sheet may be attached to the light smoke layers 41 and 42 with an adhesive or the like. Of course, application of the tenth modification to the first modification to the ninth modification is also effective.

Although an example of the entire display panel 40 is shown in FIG. 13, the display panel 40 of the present invention is not limited to this. In addition to the high-beam design light-transmitting portion used as an example for explaining the invention as described above, various design light-transmitting portions other than the high-beam design light-transmitting portion are shown as examples in FIG.

FIG. 14 is an exploded perspective view showing an example of the structure of the display device 100. The display device 100 of the present invention is shown in FIG.
Is not limited to this. The display board 40, the case 60, the printed wiring board 70, the back cover 80, the retainer 90, the front glass 95, etc. are shown as an example. As the light source 50, for example, a light emitting diode is arranged on the printed wiring board 70 and electrically connected to the printed wiring board 70. The printed wiring board 70 is attached to the case 60 from the rear side thereof, and the respective light sources 50 are arranged toward a lamp chamber (not shown) provided in the case 60. Display board 4
0 is attached to the case 60 from the front, and the case 60
Each design translucent part 30 is arrange | positioned corresponding to the light room (not shown) provided inside.

The present invention is not limited to the above-described embodiment and each modified example, but may be modified, improved,
Etc. are possible. In addition, the material, shape, size, form, number, location, etc. of each constituent element in the embodiment including the above-described plurality of modified examples are arbitrary and are not limited as long as the present invention can be achieved.

[0039]

As described above, according to the present invention, at least a part of the design light-transmitting portion of the display panel is provided by providing the thin-concentration smoke layer having a high light transmittance separately from the smoke layer. Since the brightness can be made higher than that of the part, even if the color of the light-shielding layer (that is, the background of the design light-transmitting part) and the transmission display color of the design light-transmitting part are similar colors or similar colors, the design light-transmitting part is high. Visibility can be secured. Further, even when the surroundings of the display device are bright such as in the daytime and when the surroundings of the display device are dark such as at night, high visibility of the design translucent portion can be secured regardless of the brightness of the surroundings of the display device. Further, according to the present invention, since at least the smoke layer, the light smoke layer and the light shielding layer are formed on the substrate by printing, another member having the same function as the smoke layer, the light smoke layer and the light shielding layer is attached to the substrate. The manufacturing cost can be suppressed as compared with the case.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a design translucent portion in a display plate to which the present invention is applied.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a diagram showing a first modification of the display plate of FIG.

FIG. 4 is a diagram showing a second modification of the display plate of FIG.

5 is a diagram showing a third modification of the display plate of FIG.

FIG. 6 is a diagram showing a fourth modification of the display plate of FIG.

7 is a diagram showing a fifth modification of the display plate of FIG.

FIG. 8 is a diagram showing a sixth modification of the display plate of FIG.

9 is a diagram showing a seventh modification of the display plate of FIG.

FIG. 10 is a diagram showing an eighth modification of the display plate of FIG.

11 is a diagram showing a ninth modification of the display plate of FIG. 2. FIG.

FIG. 12 is a diagram showing a tenth modification of the display plate of FIG.

FIG. 13 is a front view showing an example of the entire display plate.

FIG. 14 is an exploded perspective view showing an example of the configuration of a display device.

FIG. 15 is a partial cross-sectional view of a conventional display device.

16 is a front view of an engine oil symbol that is a warning design translucent portion in the display device of FIG.

[Explanation of symbols]

30 Design translucent part 31 High brightness area 32 Low brightness part 40 display board 41 Light smoke layer 42 smoked layers 43 Ground color layer (light-shielding layer) 45 substrate

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2F074 AA10 BB06 DD03 EE03 GG02                 3D044 BA22 BA24 BB01 BD02                 5C096 AA05 BA01 BC11 CA02 CA14                       CA28 CB01 CC06 CF02 DA03                       FA11 FA17

Claims (6)

[Claims] 1. A substrate having a rear surface on which light is incident and a front surface from which at least a part of the incident light is emitted, a smoke layer provided on one of a front surface side and a rear surface side of the substrate, One of the front side and the rear side of the substrate, which is provided on one of the front side and the rear side, has a low-density smoke layer having a light transmittance higher than that of the smoke layer, and a design light-transmitting portion for transmitting and displaying one symbol. A light-shielding layer provided on the front surface side, wherein the design translucent portion is transmissively displayed by the light transmitted through the smoke layer and the light transmitted through the light smoke layer. A display panel, wherein the portion has a low-luminance portion corresponding to the smoke layer and a high-luminance portion corresponding to the low-density smoke layer and having a higher luminance than the low-luminance portion. 2. The display panel according to claim 1, wherein at least the smoke layer, the light smoke layer and the light shielding layer are formed on the substrate by printing. 3. A display device comprising a display plate and a light source behind the display plate, wherein the display plate has a rear surface on which light from the light source is incident and at least a part of the incident light. A substrate having a front surface to be emitted, a smoke layer provided on one of the front surface side and the rear surface side of the substrate, and a light transmittance higher than that of the smoke layer provided on one of the front surface side and the rear surface side of the substrate. And a light-shielding layer provided on the front side of the substrate so as to define a design light-transmitting portion for transmitting and displaying one symbol, and the light transmitted through the smoke layer and the light-shielding layer. The design light-transmitting portion corresponds to the low-brightness portion corresponding to the smoke layer and the light-density smoke layer so that the entire design light-transmitting portion is transmitted and displayed by the light transmitted through the light-density smoke layer. , Brighter than the low brightness part Display device, wherein a has a high high-luminance portion. 4. The display device according to claim 3, wherein at least the smoke layer, the light smoke layer, and the light shielding layer are formed on the substrate by printing. 5. A substrate having a rear surface on which light is incident and a front surface from which at least a part of the incident light is emitted is provided, and a smoke layer is formed on one of the front surface side and the rear surface side of the substrate, On one of the front surface side and the rear surface side of the substrate, a thin concentration smoke layer having a light transmittance higher than that of the smoke layer is formed, and the substrate is formed so as to define a design light transmitting portion for transmitting and displaying one symbol. A light-shielding layer is formed on the front surface side, and low brightness corresponding to the smoke layer is provided so that the entire design light-transmitting portion is transmissively displayed by the light transmitted through the smoke layer and the light transmitted through the low-density smoke layer. And a high-intensity portion corresponding to the light-density smoke layer and having a higher luminance than the low-intensity portion is formed in the design light-transmitting portion. 6. The display method according to claim 5, wherein at least the smoke layer, the light smoke layer and the light shielding layer are formed on the substrate by printing.