CN201083906Y - Backlight module and display apparatus using same - Google Patents
Backlight module and display apparatus using same Download PDFInfo
- Publication number
- CN201083906Y CN201083906Y CNU200720129319XU CN200720129319U CN201083906Y CN 201083906 Y CN201083906 Y CN 201083906Y CN U200720129319X U CNU200720129319X U CN U200720129319XU CN 200720129319 U CN200720129319 U CN 200720129319U CN 201083906 Y CN201083906 Y CN 201083906Y
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- China
- Prior art keywords
- circuit board
- backboard
- control circuit
- perforate
- backlight module
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a backlight module and a display unit. The backlight module comprises a backboard, a light source unit, a control circuit board and a sensing unit, wherein, the light source unit arranged in the backboard is used to produce light; the control circuit board arranged outside the backboard and attached to the backboard is electrically connected with the light source unit and the sensing unit which is arranged outside the backboard. The utility model has the advantages of effectively reducing the volume and cost of the backlight module, increasing the assembly efficiency without influencing the lighting performance, having more convenient operating of adjustment and maintenance in the future compared with the prior design.
Description
Technical field
The utility model relates to a kind of backlight module and uses its display device, and particularly relate to a kind of control circuit board recline backboard backlight module and use its display device.
Background technology
Please refer to Fig. 1, traditional backlight module 100 comprises backboard 110, light source cell 120, control circuit board 130, sensing cell 140 and light pipe 150.Light source cell 120 for example is a plurality of light emitting diodes, is arranged at evenly distributedly on the inner bottom surface of backboard 110, and the control circuit board 130 outside the electric connection backboard 110.Sensing cell 140 for example is a light emitting diode, and the pin of its bottom electrically connects control circuit board 130, and is arranged at control circuit board 130 for fear of supersaturation on the surface of backboard 110 and with backboard 110 spacing is arranged.At this moment, the sensitive surface at sensing cell 140 tops comes the mixed light or the luminosity performance of sensor light source unit 120 by the light guide effect of light pipe 150.After relevant control circuit on the control circuit board 130 receives the electric signal that sensing cell 140 changed out by light signal, the processing of electric signal and the data that prestore can being analysed and compared, and according to this light source cell 120 is carried out drive controlling, make light source cell 120 reach required brightness performance through feedback adjusting thus.
Yet, other integrated components on the control circuit board 130 and if sensing cell 140 be arranged at the one side (being between control circuit board 130 and the backboard 110), interfere heat radiation in addition to be considered or the like for fear of element and backboard 110 generating mechanisms, generally can increase distance between control circuit board 130 and the backboard 110, perhaps the perforate with the corresponding light pipe 150 in backboard 110 bottoms strengthens, but also causes assembling and wiring to be difficult for simultaneously or problem such as the brightness performance of backlight module 100 is influenced.On the other hand, if other elements and sensing cell 140 are arranged at not coplanar, the problem that increases backlight module 100 volumes is obviously also arranged, and control circuit board 130 also uses the double-sided printed-circuit board higher as cost (double-side PrintedCircuit Board, double-side PCB), make the manufacturing cost of backlight module 100 effectively to reduce.
The utility model content
In view of this, the purpose of this utility model is exactly a kind of backlight module to be provided and to use its display device, control circuit board is posted by on the backboard, and sensing cell then is arranged at outside the backboard.Thus, can reduce the volume and the cost of backlight module effectively, and improve packaging efficiency and do not influence its luminous performance.
Embodiment of the present utility model proposes a kind of backlight module, comprises backboard, light source cell, control circuit board and sensing cell.Light source cell is arranged in the backboard and in order to produce light.Control circuit board is arranged at the outer and backboard that reclines of backboard, and control circuit board and light source cell electrically connect.It is outer and electrically connect control circuit board that sensing cell is arranged at backboard.
An embodiment of the present utility model proposes a kind of display device, comprises display panel and backlight module.Backlight module is in order to providing the backlight of display panel, and comprises backboard, light source cell, control circuit board and sensing cell.Light source cell is arranged in the backboard and in order to produce light.Control circuit board is arranged at the outer and backboard that reclines of backboard, and control circuit board and light source cell electrically connect.It is outer and electrically connect control circuit board that sensing cell is arranged at backboard.
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended diagram, be described in detail below.
Description of drawings
Fig. 1 is the synoptic diagram of traditional backlight module.
Fig. 2 is the synoptic diagram according to the display device of the utility model first embodiment.
Fig. 3 is the synoptic diagram of the sensing cell of Fig. 2.
Fig. 4 is the synoptic diagram according to the display device of the utility model second embodiment.
Fig. 5 is the synoptic diagram according to the display device of the utility model the 3rd embodiment.
Description of reference numerals
100,220,420,520: backlight module
110,231,431,531: backboard
120,250,450,550: light source cell
130,260,460,560: control circuit board
140,270,470,570: sensing cell
150,280,480,580: light pipe
200,400,500: display device
210,410,510: display panel
232,432,532: the glue frame
240,440,540: optical sheet
271: body
272: connecting portion
273: light accepting part
291,292: perforate
Embodiment
First embodiment
Please refer to Fig. 2, the display device 200 of the utility model first embodiment comprises display panel 210 and backlight module 220.Display panel 210 for example is a display panels.Backlight module 220 is in order to providing the backlight of display panel 210, and comprises backboard 231, glue frame 232, optical sheet 240, light source cell 250, control circuit board 260, sensing cell 270 and light pipe 280.Glue frame 232 is arranged at backboard 231 tops, in order to fixed optics sheet material 240.Light source cell 250 for example comprises a plurality of redness, green and blue LED, and what be arranged at backboard 231 with array way is on the bottom surface of exiting surface.
Sensing cell 270 for example is optical sensor (photosensor), optical diode (photodiode) or optotransistor (phototransistor).Please refer to Fig. 3, in first embodiment, sensing cell 270 has body 271, connecting portion 272 (shown in the oblique line scope) and light accepting part 273, and connecting portion 272 and light accepting part 273 are positioned at the same one side of body 271.In Fig. 2, connecting portion 272 electrically connects with corresponding pin or lead on 260 second S2 of control circuit board, and 273 of light accepting parts are towards these perforates 291,292, to receive the part light that is sent by light pipe 280.
The light that light source cell 250 produces mainly via optical sheet 240 directive display panels 210, makes display device 200 be shown required picture except a part sends sensing cell 270 to.270 light signals that light accepting part 273 is received of sensing cell are converted to electric signal, and send control circuit board 260 to via connecting portion 272, make it learn that light source cell 250 present brightness show.Because light source cell 250 employed its brightness of a plurality of light emitting diodes not necessarily all identical (individual difference when dispatching from the factory), and change in time, luminescence efficiency also can be failed (aging).Therefore, control circuit board 260 utilizes the brightness performance of sensing cell 270 detected light source units 250, and at any time with the related data that the prestores comparison that performs an analysis, just driving light source unit 250 according to this shows the overall brightness of backlight module 220 and produces a desired effect.
In addition, compared to Known designs, because control circuit board 260 is fitted with backboard 231, the volume of backlight module 220 can effectively reduce, and the brightness performance is unaffected.In addition, but control circuit board 260 except the lower single face PCB of use cost, sensing cell 270 and other integrated components also can both be disposed at one side, make that assembly and the maintenance of adjustment in the future are all more easy than Known designs.
Second embodiment
Please refer to Fig. 4, the display device 400 of the utility model second embodiment is different with first embodiment be in, backlight module 420 also comprises circuit board 461.Circuit board 461 for example is a flexible circuit board, and the one end is fixedly arranged on the sidewall of backboard 431 equally with engaging or mode such as be spirally connected, and the other end then electrically connects control circuit board 460.At this moment, sensing cell 470 is arranged on the circuit board 461, as shown in Figure 4, and utilize light guide structures such as the perforate of similar first embodiment and light pipe 480 to receive the part light of directive backboard 431 sidewalls, via circuit board 461 electric signal of changing out is sent to control circuit board 460 then and deals with.
The 3rd embodiment
Please refer to Fig. 5, the display device 500 of the utility model the 3rd embodiment and the second embodiment difference are that an end of the circuit board 561 of backlight module 520 is fixedly arranged on a side of glue frame 532, and the other end then electrically connects control circuit board 560 equally.At this moment, as shown in Figure 5, on circuit board 561 position is set according to sensing cell 570, sensing cell 570 receives the part light that is penetrated by optical sheet 540 sides, via circuit board 561 electric signal of changing out is sent to control circuit board 560 then and deals with.
Yet those of ordinary skill can also understand that technology of the present utility model is not limited to the foregoing description in the affiliated technical field of the utility model.For example, the quantity of sensing cell and distributing position all can optionally adjust, to increase detecting result's accuracy.In addition, the fixed form of control circuit board or circuit board also can and be made in response to assembling and consider to design.In other embodiments, sensing cell also is not limited to use the structure as Fig. 3, and promptly light accepting part and connecting portion can be positioned at the not coplanar of body, and perhaps light accepting part also can be other geometric configuratioies, and light guide structure also can correspondingly change.As long as the control circuit board of backlight module is posted by on the backboard, reduce the volume and the manufacturing cost of backlight module thus, neither disengaging technical scope of the present utility model.
The backlight module that the foregoing description of the present utility model is disclosed and use its display device is posted by control circuit board on the backboard of backlight module, and sensing cell then can be arranged at the integrated component on the control circuit board with one side.Thus, can reduce the volume and the cost of backlight module effectively, and improve packaging efficiency and do not influence its luminous performance, adjustment maintenance activity in the future is all more easy than Known designs.
In sum, though the utility model discloses as above with a preferred embodiment, so it is not in order to limit the utility model.Those of ordinary skill in the technical field under the utility model is not in breaking away from spirit and scope of the present utility model, when being used for a variety of modifications and variations.Therefore, protection domain of the present utility model is as the criterion when looking appended the claim person of defining.
Claims (18)
1. a backlight module is used for display device, it is characterized in that comprising:
Backboard;
Light source cell is arranged in this backboard and in order to produce light;
Control circuit board is arranged at outer and this backboard that reclines of this backboard, and this control circuit board and this light source cell electrically connect; And
Sensing cell, it is outer and electrically connect this control circuit board to be arranged at this backboard.
2. backlight module as claimed in claim 1 is characterized in that this control circuit board has relative first and second, this first face this backboard that reclines, and this sensing cell is arranged at this second.
3. backlight module as claimed in claim 2, it is characterized in that this backboard has first perforate and this control circuit board has second perforate, this first perforate and this second perforate are relative, the light accepting part of this sensing cell is in the face of this first perforate and this second perforate, with via this first perforate and this second perforate, receive the part light that this light source cell produces.
4. backlight module as claimed in claim 3 is characterized in that this sensing cell has body and connecting portion, and this connecting portion electrically connects this control circuit board, and this light accepting part and this connecting portion are positioned at the same one side of this body in fact.
5. backlight module as claimed in claim 3 is characterized in that also comprising light pipe, and this light pipe passes this first perforate and this second perforate.
6. backlight module as claimed in claim 1, it is characterized in that also comprising circuit board, wherein this control circuit board has relative first and second, the recline bottom of this backboard of this first face, one end of this circuit board is arranged at the sidepiece of this backboard, the other end of this circuit board is arranged at this second of this control circuit board to electrically connect this control circuit board, and this sensing cell is arranged at this end of this circuit board.
7. backlight module as claimed in claim 6 is characterized in that this circuit board is a flexible circuit board.
8. backlight module as claimed in claim 1, it is characterized in that also comprising glue frame, optical sheet and circuit board, wherein this glue frame is arranged at above this backboard and in order to fix this optical sheet, one end of this circuit board is arranged at the sidepiece of this glue frame, the other end of this circuit board electrically connects this control circuit board, and this sensing cell is arranged at this end of this circuit board.
9. backlight module as claimed in claim 1 is characterized in that this light source cell is a plurality of light emitting diodes.
10. display device is characterized in that comprising:
Display panel; And
Backlight module in order to the backlight of this display panel to be provided, and comprises:
Backboard;
Light source cell is arranged in this backboard and in order to produce light;
Control circuit board is arranged at outer and this backboard that reclines of this backboard, and this control circuit board and this light source cell electrically connect; And
Sensing cell, it is outer and electrically connect this control circuit board to be arranged at this backboard.
11. display device as claimed in claim 10 is characterized in that this control circuit board has relative first and second, this first face this backboard that reclines, and this sensing cell is arranged at this second.
12. display device as claimed in claim 11, it is characterized in that this backboard has first perforate and this control circuit board has second perforate, this first perforate and this second perforate are relative, the light accepting part of this sensing cell is in the face of this first perforate and this second perforate, with via this first perforate and this second perforate, receive the part light that this light source cell produces.
13. display device as claimed in claim 12 is characterized in that this sensing cell has body and connecting portion, this connecting portion electrically connects this control circuit board, and this light accepting part and this connecting portion are positioned at the same one side of this body in fact.
14. display device as claimed in claim 12 is characterized in that this backlight module also comprises light pipe, this light pipe passes this first perforate and this second perforate.
15. display device as claimed in claim 10, it is characterized in that also comprising circuit board, wherein this control circuit board has relative first and second, the recline bottom of this backboard of this first face, one end of this circuit board is arranged at the sidepiece of this backboard, the other end of this circuit board is arranged at this second of this control circuit board to electrically connect this control circuit board, and this sensing cell is arranged at this end of this circuit board.
16. display device as claimed in claim 15 is characterized in that this circuit board is a flexible circuit board.
17. display device as claimed in claim 10, it is characterized in that this backlight module also comprises glue frame, optical sheet and circuit board, wherein this glue frame is arranged at above this backboard and in order to fix this optical sheet, one end of this circuit board is arranged at the sidepiece of this glue frame, the other end of this circuit board electrically connects this control circuit board, and this sensing cell is arranged at this end of this circuit board.
18. display device as claimed in claim 10 is characterized in that this light source cell is a plurality of light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720129319XU CN201083906Y (en) | 2007-08-20 | 2007-08-20 | Backlight module and display apparatus using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720129319XU CN201083906Y (en) | 2007-08-20 | 2007-08-20 | Backlight module and display apparatus using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083906Y true CN201083906Y (en) | 2008-07-09 |
Family
ID=39626376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720129319XU Expired - Lifetime CN201083906Y (en) | 2007-08-20 | 2007-08-20 | Backlight module and display apparatus using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201083906Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013071527A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Backlight system |
| US8985796B2 (en) | 2011-11-18 | 2015-03-24 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight system of display device with printed circuit board separate from and mounted to LED substrate with support pillars |
| CN110136586A (en) * | 2019-05-27 | 2019-08-16 | Oppo广东移动通信有限公司 | Backlight assembly, display module and electronic equipment |
-
2007
- 2007-08-20 CN CNU200720129319XU patent/CN201083906Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013071527A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Backlight system |
| US8985796B2 (en) | 2011-11-18 | 2015-03-24 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight system of display device with printed circuit board separate from and mounted to LED substrate with support pillars |
| CN110136586A (en) * | 2019-05-27 | 2019-08-16 | Oppo广东移动通信有限公司 | Backlight assembly, display module and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO. Free format text: FORMER OWNER: ZHONGQIANG PHOTOELECTRIC CO LTD Effective date: 20121228 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: TAIWAN, CHINA TO: 518132 SHENZHEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121228 Address after: 518132 9-2, Guangming Road, Guangming New District, Guangdong, Shenzhen Patentee after: Shenzhen Huaxing Optoelectronic Technology Co., Ltd. Address before: Hsinchu Science Park, Taiwan, China Patentee before: Zhongqiang Photoelectric Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080709 |
|
| CX01 | Expiry of patent term |