CN1687830A - Backlight structure and its light source module - Google Patents
Backlight structure and its light source module Download PDFInfo
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- CN1687830A CN1687830A CN 200510074683 CN200510074683A CN1687830A CN 1687830 A CN1687830 A CN 1687830A CN 200510074683 CN200510074683 CN 200510074683 CN 200510074683 A CN200510074683 A CN 200510074683A CN 1687830 A CN1687830 A CN 1687830A
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Abstract
The invention is a backlight structure and its light source module. It comprises a first light guide plate, a second light guide plate, and a light source module, where the second light guide plate is opposite to the first one, and its light source module comprises a flexible circuit board with turning section, a first light-emitting component and a second one, where the turning section is between the two light-emitting components. And by the turning section, the flexible circuit board can deform to make the first light-emitting component provide light source for the second one and vice versa, so as to make it achieve the design of double-side light output.
Description
Technical field
The invention relates to a kind of backing structure, and particularly relevant for the flexible PCB with luminescence component in the backing structure.
Background technology
Because display panels is the display panel of non-self-luminosity, must provide required light source, the function of competence exertion show image by backlight module (backlight module).
Under the double screen of mobile phone designed at present, backlight module must offer two light sources that display panels is required separately.Because the display surface of two display panels is relative, so backlight module just must be designed to two-sided bright dipping, provides light source with the display panels to different display surfaces.Please refer to Fig. 1, it is designed to the synoptic diagram of an example of two-sided bright dipping for the traditional backlight module.Backing structure 100 comprises light guide plate (light guide plate) 102, reflector plate (reflector) 106, luminescence component 108 and flexible PCB (Flexible Printed Circuit, FPC) 110.Reflector plate 106 is disposed in the light guide plate 102.Backing structure 100 is when running, luminescence component 108 for example is a light emitting diode, be disposed on the flexible PCB 110, receiving required power supply, and the light source that it produced, enter in light guide plate 102 through a side of light guide plate 102, and this light source is divided into two parts and penetrates from light guide plate 102, wherein part light penetrates from the face that light guide plate 102 is pasted with reflector plate 106, and other parts light penetrates from the another side of light guide plate 102 by reflector plate 106 reflections, to reach the design of two-sided bright dipping.But the design of this common light source causes whole optical brightness effect relatively poor, and the difficult control of the power consumption of power supply.
Please refer to Fig. 2, it is designed to another routine synoptic diagram of two-sided bright dipping for the traditional backlight module.Backing structure 200 comprises two light guide plate (light guide plate) 202 and 204, reflector plate (reflector) 206 and two luminescence components 208 and 210.The places different with above-mentioned backlight module 100 are that two light guide plate 202 and 204 are no longer shared same light source, and changing by two luminescence components 208 and 210 provides light source to two light guide plate 202 and 204 respectively, to reach the two-sided light effect that goes out.Two luminescence components 208 are disposed at corresponding flexible PCB 212 and 214 separately with 210, to obtain required power supply.Such design has preferred optical quality and power Consumption Control than backing structure 100.But need two flexible PCBs 212 and 214.So flexible PCB FPC make with piece installing man-hour on, cost more improves.
Summary of the invention
In view of this, purpose of the present invention is exactly a kind of backlight module to be provided and to have the flexible PCB of luminescence component.Backlight module has the design of the two-sided bright dipping of preferred optical quality, and required cost can save luminescence component and be disposed on the flexible PCB time.
According to purpose of the present invention, a kind of flexible PCB with luminescence component is proposed.The flexible PCB of luminescence component is in order to provide light source to first light guide plate and second light guide plate.First light guide plate is relative with second light guide plate.Flexible PCB comprises first group of luminescence component, second group of luminescence component and turning point.Second group of luminescence component and first group of luminescence component are disposed on the same one side of flexible PCB.The turning point is between between first group of luminescence component and second group of luminescence component.When transfer in the turning point, first group of luminescence component provides light source to first light guide plate, and second group of luminescence component provides light source to second light guide plate.
According to another object of the present invention, a kind of backlight module is proposed.Backlight module comprises first light guide plate, second light guide plate and flexible PCB.Second light guide plate is relative with first light guide plate.Flexible PCB comprises first group of luminescence component, second group of luminescence component and turning point.First group of luminescence component and second group of luminescence component are disposed on the flexible PCB.The turning point is between first group of luminescence component and second group of luminescence component.When transfer in the turning point, first group of luminescence component provides light source to first light guide plate, and second group of luminescence component provides light source to second light guide plate.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 is designed to the synoptic diagram of an example of two-sided bright dipping for the traditional backlight structure.
Fig. 2 is designed to another routine synoptic diagram of two-sided bright dipping for the traditional backlight structure.
Fig. 3 A is the synoptic diagram of the light source module of first embodiment of the invention.
Fig. 3 B is the synoptic diagram after flexible PCB 306 deformation shown in Fig. 3 A.
Fig. 3 C has the synoptic diagram of the flexible PCB 306 of luminescence component for another.
Fig. 4 is the synoptic diagram of the backing structure of application first embodiment of the invention.
Fig. 5 is the circuit diagram of flexible PCB 306.
Fig. 6 A is the light source module synoptic diagram of second embodiment of the invention.
Fig. 6 B is the synoptic diagram after flexible PCB 406 deformation shown in Fig. 6 A.
Fig. 7 is the synoptic diagram of the backing structure of the flexible PCB of application second embodiment of the invention.
Fig. 8 A is the light source module synoptic diagram of third embodiment of the invention.
Fig. 8 B is the synoptic diagram after flexible PCB 506 deformation shown in Fig. 8 A.
Fig. 9 is the synoptic diagram of the backing structure of application third embodiment of the invention.
The primary clustering symbol description
100: backing structure
102: light guide plate
106: reflector plate
108: luminescence component
110: flexible PCB
200: backing structure
202: light guide plate
204: light guide plate
206: reflector plate
208: luminescence component
210: luminescence component
212: flexible PCB
214: flexible PCB
300,300 ', 300 ": light source module
302: the first light guide plate
304: the second light guide plate
306,406,506: flexible PCB
308: the first luminescence components
310: the first luminescence components
312: reflector plate
400,400 ', 400 ": backing structure
P1～P3, P1 '～P3 ': first one to the 3rd one
D: electroluminescence body
T, T ', T ": the turning point
E1～E4: electrically connect point
Embodiment
The invention provides a kind of backing structure and light source module thereof, except the optical quality of the two-sided bright dipping of backing structure preferably, also can save luminescence component and be disposed at cost on the flexible PCB.
Light source module includes the flexible PCB of a tool turning point, first group of luminescence component, second group of luminescence component.Flexible PCB for example is flexible PCB (flexible printed circuit).Flexible PCB has more a turning point, and the turning point is the lamina body structure.The turning point is between between first group of luminescence component and second group of luminescence component.After the turnover of turning point, the shape after the flexible PCB deformation allows first group of luminescence component provide light source to first light guide plate, and second group of luminescence component provides light source to second light guide plate, to reach the design of two-sided bright dipping.
First embodiment
Please refer to Fig. 3 A, it is the synoptic diagram of the light source module of first embodiment of the invention.Light source module 300 includes the flexible PCB 306 of a tool turning point T, first group of luminescence component 308 and second group of luminescence component 310.Without the flexible PCB before the deformation 306 as shown in Figure 3A.Flexible PCB 306 can be doubling plate body structure or lamina body structure.First group of luminescence component 308 and second group of luminescence component 310 for example are disposed on the same one side of flexible PCB 306.First group of luminescence component 308 for example comprises three electroluminescence body D1, D2 and D3.Second group of luminescence component 310 for example comprises two electroluminescence body D4 and D5.Electroluminescence body D for example be light emitting diode (Light Emitting Diode, LED).Turning point T is between first group of luminescence component 308 and second group of luminescence component 310, and it is the lamina body structure, so that the easier turnover of turning point T.
Further, flexible PCB 306 more is divided into first P1, second P2 and the 3rd P3.First P1, second P2 and the 3rd P3 link to each other in regular turn, and form a given shape, example U font as shown in Figure 3A.First group of luminescence component 308 is disposed on first P1, and second group of luminescence component 310 is disposed on the 3rd P3.
Please refer to Fig. 3 B, it is the synoptic diagram after flexible PCB 306 deformation shown in Fig. 3 A.Shown in Fig. 3 B, the mode of flexible PCB 306 deformation is, be axle with dotted line X (for example being the long limit of the 3rd P3), and the 3rd P3 that overturn causes second P2 overlapping of partly the 3rd P3 and part, and the part of this overlapping is thought turning point T.Whereby, make first on the P1 luminescence component 308 and the luminescence component 310 on the 3rd P3 towards reverse direction.The first group of luminescence component 308 that must be noted that present embodiment is also configurable on the different one sides of flexible PCB 306 with second group of luminescence component 310.Please refer to Fig. 3 C, it has the synoptic diagram of the flexible PCB 306 of luminescence component for another, luminescence component 308 and 310 is disposed on the different one sides of flexible PCB 306, makes flexible PCB 306 not need by turnover, can make luminescence component 308 and 310 towards reverse direction.
Please refer to Fig. 4, it is the synoptic diagram of the backing structure of application first embodiment of the invention.Backing structure 400 comprises first light guide plate 302, second light guide plate 304, reflector plate 312 and above-mentioned light source module 300.First light guide plate 302 and second light guide plate 304 be towards reverse direction, and separated by reflector plate 312.After flexible PCB 306 deformation, be disposed at two light guide plate 302 and 304 sides, make 308 pairs first light guide plate 302 of first group of luminescence component that light source is provided, and 310 pairs second light guide plate 304 of second group of luminescence component provide light source.Light guide plate 302 and 304 promptly derives luminescence component 308 and 310 and the light that reflected of reflector plate 312 respectively, to reach the design of two-sided bright dipping.
Because two light guide plate 302 all can obtain required light source by corresponding luminescence component 308 and 310 with 304.Therefore, compared with the designed backing structure of common light source (backing structure 100 for example shown in Figure 1), brighter and the two the brightness of two light guide plate 302 and 304 brightness can be controlled respectively, has preferred optical brightness effect.
In addition, many electroluminescence body D are disposed at the mode of flexible PCB 306, can be that the mode of serial or parallel connection is electrically connected to each other, and are not specially limited many electroluminescence body D, the electric connection mode on flexible PCB 306 at this.Please refer to Fig. 5, it is the circuit diagram of flexible PCB 306.With flexible PCB 306 is example.Electroluminescence body D1, D2 for example are disposed on first P1 in the mode of connecting with D3, and electroluminescence body D4 is disposed on the 3rd P3 in the mode of connecting with D5.Flexible PCB 306 has more first and electrically connects an E1, second an electric connection point E2, the 3rd electric connection point E3 and the 4th an electric connection E4.It is luminous to drive first group of luminescence component 308 (electroluminescence body D1, D2 and D3) that first electric current I 1 electrically connects some E1 input by first, and electrically connect some E2 output in second.And second electric current 12 electrically connects some E3 input to drive second group of luminescence component 310 (electroluminescence body D4 and D5) and to electrically connect some E4 output in the 4th by the 3rd.
By two groups of power supplys, control the luminous power of two luminescence components 308 and 310, to control the luminosity of two light guide plate 302 and 304 respectively.For example when backing structure 300 was applied to the mobile phone of double-display screen, the mobile phone of double-display screen had main display and time display screen.Two light guide plate 302 and corresponding main display of 304 difference and time display screen.When the user opens mobile phone, when using main display, make first group of luminescence component 308 of electric current I 1 driving luminous, so that main display display frame, and close second group of luminescence component 310.Otherwise, when using time display screen display frame, then drive second group of luminescence component 310, close first group of luminescence component 308.So,, more can save electrical source consumption, reach better power Consumption Control compared with the backing structure of sharing one group of light source.
Flexible PCB 306 when making, can because of luminescence component 308,310 piece installings in the position of flexible PCB 306 and the bar number of flexible PCB 306, different manufacturing costs is arranged.The luminescence component 308,310 of present embodiment all is disposed on the same flexible PCB 306, compared with shown in Figure 2 with luminescence component respectively two flexible PCBs 212 and 214 conventional practice compare, the cost that is disposed on the same flexible PCB 306 of present embodiment is lower.
The same one side that luminescence component is configured in flexible PCB is also different with the manufacturing cost of different one sides.If when two luminescence components are configured in different one side on the flexible PCB, can cause production line in the process of piece installing, must change the face piece installing to flexible PCB, and need thread-changing and readjust the setting and the correction of making board, and prolong the man-hour of piece installing.Owing to luminescence component 308,310 is disposed on the same one side of same flexible PCB 306 in the present embodiment, the piece installing man-hour that can significantly reduce flexible PCB 306 is to reduce manufacturing cost.
Second embodiment
In a second embodiment, with first embodiment in identical assembly give identical element numbers.
Please refer to Fig. 6 A, it is the light source module synoptic diagram of second embodiment of the invention.Light source module 300 ' includes the flexible PCB 406 of a tool turning point T ', first group of luminescence component 308, second group of luminescence component 310.Without the flexible PCB before the deformation 406 as shown in Figure 6A.Between first group of luminescence component 308 and second group of luminescence component 310, it is the lamina body structure to turning point T ' equally.Flexible PCB 406 has similar shape (U font) with above-mentioned flexible PCB 306.
Please refer to Fig. 6 B, it is the synoptic diagram after flexible PCB 406 deformation shown in Fig. 6 A.The deformation mode of flexible PCB 406 is different from the foregoing description in the present embodiment, be nonreversible the 3rd P3, only make second P2 bending, first group of luminescence component 308 is positioned on the different surface levels with second group of luminescence component 310, to form, think turning point T ' just like the drop height H shown in Fig. 6 B.
Please refer to Fig. 7, it is the synoptic diagram of the backing structure of the flexible PCB of application second embodiment of the invention.Backing structure 400 ' comprises first light guide plate 302, second light guide plate 304, reflector plate 312 and above-mentioned light source module 300 '.The manner of execution of backing structure 400 ' is sketched as first embodiment.As shown in Figure 7, after flexible PCB 406 deformation, be disposed at two light guide plate 302 and 304 sides, make 308 pairs first light guide plate 302 of first group of luminescence component that light source is provided, and 310 pairs second light guide plate 304 of second group of luminescence component provide light source, to reach the design of two-sided bright dipping.
So the backing structure 400 ' of present embodiment is identical with the backing structure of the foregoing description 400,, all have preferred optical brightness effect and better power Consumption Control compared with the backing structure 100 of common light source.And luminescence component 308,310 also is disposed at same flexible PCB 406, and on one side, piece installing man-hour of also significantly reducing flexible PCB 406 is to reduce manufacturing cost.In addition, first group of luminescence component 308 and second group of luminescence component 310 of present embodiment on the different one sides of flexible PCB 406, similarly also can reach the design of two-sided bright dipping as above-mentioned also configurable.
The 3rd embodiment
In the 3rd embodiment, in the foregoing description, identical assembly gives identical element numbers.
Please refer to Fig. 8 A, it is the light source module synoptic diagram of third embodiment of the invention.Light source module 300 " include a tool turning point T " flexible PCB 506, first group of luminescence component 308, second group of luminescence component 310.Without the flexible PCB before the deformation 506 shown in Fig. 8 A.Flexible PCB 506 is different with above-mentioned flexible PCB 306 and 406 locates shape and turning point T for flexible PCB 506 " the position.Turning point T " be described as follows.
Please refer to Fig. 9, it is the synoptic diagram of the backing structure of application third embodiment of the invention.Backing structure 400 " as said structure, this just no longer stating more.As shown in Figure 9, with the flexible PCB after the deformation 506, be disposed at light guide plate 302 and 304 sides, make 308 pairs first light guide plate 302 of first group of luminescence component provide light source and 310 pairs second light guide plate 304 of second group of luminescence component that light source is provided, to reach the design of two-sided bright dipping.
Identical with above-mentioned two embodiment, backing structure 400 ",, have preferred optical brightness effect and better power Consumption Control equally compared with the backing structure 100 of common light source.And luminescence component 308,310 also is disposed on the same one side of same flexible PCB 506, to reduce the manufacturing cost of flexible PCB 406, but as above-mentioned, luminescence component 308,310 is also configurable on the not coplanar of flexible PCB 506, and reaches state after the deformation shown in Fig. 8 B.In addition, the plate body structure that does not limit flexible PCB in above-mentioned three implementation columns is individual layer or bilayer, as long as can allow shape after the flexible PCB deformation reach the design of two-sided bright dipping.
Therefore, the disclosed backing structure of the above embodiment of the present invention and have the flexible PCB of luminescence component is on the flexible PCB that two groups of luminescence components is disposed at one side, to save the manufacturing cost of luminescence component piece installing on flexible PCB.And, no matter the shape of flexible PCB by with the shape after the flexible PCB deformation, allows two groups of luminescence components provide light source to two light guide plate respectively, to reach the design of two-sided bright dipping.
In sum; though the present invention with a preferred embodiment openly as above; right its is not in order to limit the present invention; any insider; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (10)
1. light source module, in order to provide light source to one first light guide plate and one second light guide plate, this light source module comprises:
One flexible PCB has a turning point;
One first group of luminescence component is disposed on this flexible PCB; And
One second group of luminescence component is disposed on this flexible PCB;
Wherein, this turning point is between between this first group of luminescence component and this second group of luminescence component.
2. light source module according to claim 1, wherein this first group of luminescence component and this second group of luminescence component are disposed on the same one side of this flexible PCB.
3. light source module according to claim 1, wherein this first group of luminescence component and this second group of luminescence component are disposed on the not coplanar of this flexible PCB.
4. light source module according to claim 1, wherein this flexible PCB is the doubling plate body structure, then is the lamina body structure in this place, turning point.
5. light source module according to claim 1, wherein this flexible PCB has one first electric connection point and one second electric connection point, and electrically connects with this first group of luminescence component.
6. light source module according to claim 1, wherein this flexible PCB has one the 3rd electric connection point and one the 4th electric connection point, and electrically connects with this second group of luminescence component.
7. backing structure comprises:
One first light guide plate;
One second light guide plate, relative with this first light guide plate; And
One flexible PCB has one first group of luminescence component and one second group of luminescence component, and this first group of luminescence component provides light source to this first light guide plate, and this second group of luminescence component provides light source to this second light guide plate.
8. backing structure according to claim 7, wherein this flexible PCB has more a turning point, and this turning point is between between this first group of luminescence component and this second group of luminescence component.
9. backing structure according to claim 8, wherein, this second group of luminescence component and this first group of luminescence component are disposed on the same plane of this flexible PCB.
10. backing structure according to claim 8, wherein, this second group of luminescence component and this first group of luminescence component are disposed on the Different Plane of this flexible PCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510074683 CN1687830A (en) | 2005-05-30 | 2005-05-30 | Backlight structure and its light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510074683 CN1687830A (en) | 2005-05-30 | 2005-05-30 | Backlight structure and its light source module |
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| CN1687830A true CN1687830A (en) | 2005-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510074683 Pending CN1687830A (en) | 2005-05-30 | 2005-05-30 | Backlight structure and its light source module |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101331428B (en) * | 2006-03-08 | 2011-03-09 | 乐金显示有限公司 | Display module |
| CN102168827A (en) * | 2009-12-07 | 2011-08-31 | 友达光电股份有限公司 | Display device with double-faced display function and backlight module thereof |
| CN102252217A (en) * | 2010-05-21 | 2011-11-23 | 纬创资通股份有限公司 | Backlight module with double-side light-emitting structure and display device |
| CN101706075B (en) * | 2009-12-07 | 2012-05-23 | 友达光电股份有限公司 | Display device with double-sided display function and backlight module thereof |
| CN101634406B (en) * | 2008-07-24 | 2012-05-30 | 爱普生映像元器件有限公司 | Illumination device, coordinate inputting device, electro-optical device, and electronic apparatus |
| US8382358B2 (en) | 2009-11-27 | 2013-02-26 | Au Optronics Corporation | Double-side display panel with backlight module used therein and manufacture method thereof |
| CN101922644B (en) * | 2009-06-11 | 2013-04-24 | 华映视讯（吴江）有限公司 | Light source group and backlight module |
| CN103075676A (en) * | 2011-10-26 | 2013-05-01 | 乐金显示有限公司 | Back light unit, method of manufacturing the same and liquid crystal display device including the same |
| CN104508352A (en) * | 2012-07-25 | 2015-04-08 | 英派尔科技开发有限公司 | Backlight system |
| CN107479487A (en) * | 2017-09-16 | 2017-12-15 | 南京中高知识产权股份有限公司 | Rimless industrial computer and automatic production line |
| CN110045545A (en) * | 2019-05-17 | 2019-07-23 | 上海中航光电子有限公司 | Display device |
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2005
- 2005-05-30 CN CN 200510074683 patent/CN1687830A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101331428B (en) * | 2006-03-08 | 2011-03-09 | 乐金显示有限公司 | Display module |
| CN101634406B (en) * | 2008-07-24 | 2012-05-30 | 爱普生映像元器件有限公司 | Illumination device, coordinate inputting device, electro-optical device, and electronic apparatus |
| CN101922644B (en) * | 2009-06-11 | 2013-04-24 | 华映视讯（吴江）有限公司 | Light source group and backlight module |
| US8382358B2 (en) | 2009-11-27 | 2013-02-26 | Au Optronics Corporation | Double-side display panel with backlight module used therein and manufacture method thereof |
| CN102168827B (en) * | 2009-12-07 | 2014-04-09 | 友达光电股份有限公司 | Display device with double-faced display function and backlight module thereof |
| CN102168827A (en) * | 2009-12-07 | 2011-08-31 | 友达光电股份有限公司 | Display device with double-faced display function and backlight module thereof |
| CN101706075B (en) * | 2009-12-07 | 2012-05-23 | 友达光电股份有限公司 | Display device with double-sided display function and backlight module thereof |
| CN102252217A (en) * | 2010-05-21 | 2011-11-23 | 纬创资通股份有限公司 | Backlight module with double-side light-emitting structure and display device |
| CN102252217B (en) * | 2010-05-21 | 2013-03-27 | 纬创资通股份有限公司 | Backlight module with double-side light-emitting structure and display device |
| CN103075676A (en) * | 2011-10-26 | 2013-05-01 | 乐金显示有限公司 | Back light unit, method of manufacturing the same and liquid crystal display device including the same |
| CN103075676B (en) * | 2011-10-26 | 2015-05-13 | 乐金显示有限公司 | Back light unit, method of manufacturing the same and liquid crystal display device including the same |
| US9121988B2 (en) | 2011-10-26 | 2015-09-01 | Lg Display Co., Ltd. | Back light unit, method of manufacturing the same and liquid crystal display device including the same |
| CN104508352A (en) * | 2012-07-25 | 2015-04-08 | 英派尔科技开发有限公司 | Backlight system |
| CN104508352B (en) * | 2012-07-25 | 2016-11-23 | 英派尔科技开发有限公司 | Back light system |
| CN107479487A (en) * | 2017-09-16 | 2017-12-15 | 南京中高知识产权股份有限公司 | Rimless industrial computer and automatic production line |
| CN110045545A (en) * | 2019-05-17 | 2019-07-23 | 上海中航光电子有限公司 | Display device |
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