CN202757022U - Backlight module and display device using backlight module - Google Patents
Backlight module and display device using backlight module Download PDFInfo
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- CN202757022U CN202757022U CN 201220465353 CN201220465353U CN202757022U CN 202757022 U CN202757022 U CN 202757022U CN 201220465353 CN201220465353 CN 201220465353 CN 201220465353 U CN201220465353 U CN 201220465353U CN 202757022 U CN202757022 U CN 202757022U
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- backlight module
- lgp
- container cavity
- spring
- inwall
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Abstract
The utility model provides a backlight module and a display device using the backlight module. The backlight module comprises a light guide plate, wherein containing cavities are arranged on the light guide plate, the containing cavities extend along the thermal expansion direction of the light guide plate, elastic elements are arranged in the containing cavities, and the elastic elements provide pressure or tensile force to enable the light guide plate to be stable without moving in heating. The display device comprises the backlight device. Heating expansion of the light guide plate is counterbalanced by means of the pressure or the tensile force provided to the inner walls of the containing cavities from the elastic elements inside the containing cavities, the light guide plate is enabled to be stable without the moving, a thermal expansion problem of the light guide plate can be effectively resolved, and display quality of the backlight module is improved. The display device using the backlight module can effectively resolve the thermal expansion problem of the light guide plate and improves the display quality of the backlight module.
Description
Technical field
The utility model relates to the Display Technique field, particularly relates to a kind of backlight module and uses the display unit of this backlight module.
Background technology
Backlight module is one of significant components of liquid crystal display, because liquid crystal itself is not luminous, the function of backlight module is exactly well-off brightness and the light source that is evenly distributed, and makes normally show image of liquid crystal display.At present, it is ripe that the Display Technique of liquid crystal display has been tending towards, and especially the design aspect at backlight module also has a great development.Backlight module can also provide light source for display unit such as DPF, Electronic Paper, mobile phones except being applied in the liquid crystal indicators such as liquid crystal display, liquid crystal TV set.
Backlight module is divided into side-light backlight module and down straight aphototropism mode set according to the position difference of light source.The side-light backlight module mainly comprises light source, LGP and backboard.The LGP major function is to convert the spot light of incident to area source by light principle at random.Light source is positioned at least one side of LGP, and then the light that light source sends penetrate by LGP is positive to the conduction of the LGP other end.Backboard is usually located at the back side one side of LGP.The location of LGP mainly is to rely on the locating dowel that connects on the bending edges that stamps out on the backboard or the backboard.Because LGP is the meeting thermal expansion under the light source luminescent irradiation, above-mentioned locate mode all needs leave certain expansion space to LGP, and at this moment LGP can move up and down in backlight module, has certain free degree.Although this design solves the thermal expansion problem of LGP, LGP is in active state in backlight module inside, can cause the optics fluctuation of backlight module, so that the quality of backlight module descends.
The utility model content
The purpose of this utility model provides a kind of thermal expansion problem that can effectively solve LGP, improves the backlight module of backlight module display quality and uses the display unit of this backlight module.
Backlight module of the present utility model, comprise LGP, be provided with container cavity on the described LGP, described container cavity extends along the direction of the expanded by heating of described LGP, the inside of described container cavity is provided with flexible member, described flexible member provides pressure or pulling force to the inwall of described container cavity, so that described LGP is stablized when being heated is motionless.
Backlight module of the present utility model, wherein, described container cavity comprises the first container cavity that bearing of trend is parallel with the bearing of trend of the lamp bar of backlight module, the flexible member of the inside of described the first container cavity is first spring parallel with described lamp bar, the two ends of described the first spring are connected to the first inwall of described the first container cavity and second inwall relative with described the first inwall, described the first spring provides pulling force to described the first inwall and the second inwall, so that described LGP is stablized when being heated is motionless.
Backlight module of the present utility model, wherein, described the first container cavity is positioned on the first side away from the lamp bar of described LGP, on the axis perpendicular to described first side that is centered close to described LGP of described the first container cavity.
Backlight module of the present utility model, wherein, the middle part of described the first spring is connected with the first mounting cover, the bosom position of described the first container cavity is provided with the first mounting rod perpendicular to described LGP, described the first mounting cover is placed on described the first mounting rod by centre bore, described the first spring is fixed in the inside of described the first container cavity.
Backlight module of the present utility model, wherein, be provided with the opening that extends to away from the first side of lamp bar on the second side of the close lamp bar of described LGP, the inside of described opening is provided with the locating dowel perpendicular to described LGP, described locating dowel is carried out spacing to the inwall of described opening, so that described LGP is stablized when being heated is motionless.
Backlight module of the present utility model, wherein, described container cavity comprises the second container cavity that bearing of trend is vertical with the bearing of trend of the lamp bar of backlight module, the flexible member of the inside of described the second container cavity is second spring vertical with described lamp bar, the two ends of described the second spring are connected to the 3rd inwall of described the second container cavity and four inwall relative with described the 3rd inwall, described the second spring provides pressure to described the 3rd inwall and described the 4th inwall, so that described LGP is stablized when being heated is motionless.
Backlight module of the present utility model, wherein, the described locating dowel of the inside of described opening is corresponding with described second spring of the inside of described the second container cavity, and the center of circle of an end of described locating dowel is positioned on the axis of corresponding described the second spring.
Backlight module of the present utility model, wherein, described opening has two, two described openings lay respectively at the two ends of described second side, described the second container cavity has two, two described the second container cavities lay respectively on the dual-side of vertical described lamp bar of described LGP, the described locating dowel in two described openings respectively with two described the second container cavities in described the second spring corresponding respectively.
Backlight module of the present utility model, wherein, the center of two described the second container cavities lays respectively on the axis that is parallel to described first side of described LGP.
Backlight module of the present utility model, wherein, the middle part of described the second spring is connected with the second mounting cover, the bosom position of described the second container cavity is provided with the second mounting rod perpendicular to described LGP, described the second mounting cover is placed on described the second mounting rod by centre bore, described the second spring is fixed in the inside of described the second container cavity.
The display unit of use backlight module of the present utility model comprises backlight module of the present utility model.
Backlight module of the present utility model provides pressure or pulling force to offset the expanded by heating of LGP by the flexible member in the container cavity to the inwall of container cavity, LGP is stablized motionless when being heated, can effectively solve the thermal expansion problem of LGP, improve the display quality of backlight module.
The display unit of use backlight module of the present utility model because adopt backlight module of the present utility model, can effectively solve the thermal expansion problem of LGP, improves the display quality of backlight module.
Description of drawings
Fig. 1 is the structural representation of backlight module of the present utility model;
Fig. 2 is that E-E shown in Figure 1 is to cutaway view;
Fig. 3 is the partial enlarged drawing of A structure shown in Figure 2;
Fig. 4 is that F-F shown in Figure 1 is to cutaway view;
Fig. 5 is the partial enlarged drawing of B structure shown in Figure 4;
Fig. 6 is the partial enlarged drawing of C-structure shown in Figure 4.
The specific embodiment
As shown in Figure 1 and Figure 2, the backlight module of the utility model embodiment comprises LGP 1, lamp bar 2 and backboard 5, wherein, is positioned at the outside of the second side 22 of LGP 1 as the lamp bar 2 of light source.LGP 1 is rectangle, and lamp bar 2 is parallel with the second side 22 of LGP 1.The outside of second side 22 is the incident light side of LGP 1.Backboard 5 is positioned at the back side one side of LGP 1.The bending edges that backboard 5 stamps out, by above-mentioned bending edges, LGP 1 and lamp bar 2 are fixed on the backboard 5.Be provided with container cavity on the LGP 1, container cavity extends along the direction of the expanded by heating of LGP 1, and the inside of container cavity is provided with flexible member, and flexible member provides pressure or pulling force to the inwall of container cavity, so that LGP 1 is stablized when being heated is motionless.
Backlight module of the present utility model provides pressure or pulling force to offset the expanded by heating of LGP by the flexible member in the container cavity to the inwall of container cavity, LGP is stablized motionless when being heated, can effectively solve the thermal expansion problem of LGP, improve the backlight module display quality.
The backlight module of the utility model embodiment, wherein, container cavity comprises that the flexible member of the inside of the first container cavity 11, the first container cavities 11 that bearing of trend is parallel with the bearing of trend of the lamp bar 2 of backlight module is first spring 31 parallel with lamp bar 2.The two ends of the first spring 31 are connected to the first inwall 41 of the first container cavity 11 and second inwall 42 relative with the first inwall 41.The first spring 31 provides pulling force to the first inwall 41 and the second inwall 42, so that LGP 1 is stablized when being heated is motionless.
The first spring 31 of the inside of the first container cavity 11 is used for offsetting the expanded by heating of LGP 1 on the direction parallel with lamp bar 2.
The backlight module of the utility model embodiment, wherein, the first container cavity 11 is positioned on the first side 21 away from lamp bar 2 of LGP 1.On the axis perpendicular to first side 21 that is centered close to LGP 1 of the first container cavity 11.
In conjunction with shown in Figure 3, the backlight module of the utility model embodiment, wherein, the middle part of the first spring 31 is connected with the first mounting cover 51.The first mounting cover 51 is arranged at the middle part of (mode that for example adopts laser weld) the first spring 31.The bosom position of the first container cavity 11 is provided with the first mounting rod 61 perpendicular to LGP 1.The first mounting rod 61 vertically is fixedly connected on the backboard 5.The first mounting cover 51 is placed on the first mounting rod 61 by centre bore, the first spring 31 is fixed in the inside of the first container cavity 11.
In conjunction with shown in Figure 6, the backlight module of the utility model embodiment wherein, is provided with the opening 3 that extends to away from the first side 21 of lamp bar 2 on the second side 22 of the close lamp bar 2 of LGP 1.The inside of opening 3 is provided with the locating dowel 4 perpendicular to LGP 1.Locating dowel 4 vertically is fixedly connected on the backboard 5.When the heat of sending when LGP 1 receiving light bar 2 and thermal expansion, it is spacing that the inwall of 4 pairs of openings 3 of locating dowel carries out, so that LGP 1 is stablized when being heated is motionless.
In conjunction with Fig. 4, shown in Figure 5, the backlight module of the utility model embodiment, wherein, container cavity comprises the second container cavity 12 that bearing of trend is vertical with the bearing of trend of the lamp bar 2 of backlight module.The flexible member of the inside of the second container cavity 12 is second spring 32 vertical with lamp bar 2.The two ends of the second spring 32 are connected to the 3rd inwall 43 of the second container cavity 12 and four inwall 44 relative with the 3rd inwall 43.The second spring 32 provides pressure to the 3rd inwall 43 and the 4th inwall 44.The second spring 32 of the inside of the second container cavity 12 is used for offsetting the expanded by heating of LGP 1 on the direction vertical with lamp bar 2.When LGP 1 receiving light bar 2 send hot the time because locating dowel 4 is spacing, LGP 1 can expand on the direction at 21 places, first side, such the second spring 32 can shrink, but the spacing between LGP 1 and the lamp bar 2 remains constant.
The backlight module of the utility model embodiment, wherein, the locating dowel 4 of the inside of opening 3 is corresponding with the second spring 32 of the inside of the second container cavity 12, and the center of circle of an end of locating dowel 4 is positioned on the axis of corresponding the second spring 32.
The backlight module of the utility model embodiment, wherein, opening 3 has two, and two openings 3 lay respectively at the two ends of the second side 22 of LGP 1.Correspondingly, the second container cavity 12 also has two.Two the second container cavities 12 lay respectively on the dual-side of vertical lamp bar 2 of LGP 1, the locating dowel 4 in two openings 3 respectively with two the second container cavities 12 in the second spring 32 corresponding respectively.
The backlight module of the utility model embodiment, wherein, the center of two the second container cavities 12 lays respectively on the axis that is parallel to first side 21 of LGP 1.
The backlight module of the utility model embodiment, wherein, the middle part of the second spring 32 is connected with the second mounting cover 52.The second mounting cover 52 is arranged at the middle part of (mode that for example adopts laser weld) the second spring 32.The bosom position of the second container cavity 12 is provided with the second mounting rod 62 perpendicular to LGP 1.The second mounting rod 62 vertically is fixedly connected on the backboard 5.The second mounting cover 52 is placed on the second mounting rod 62 by centre bore, the second spring 32 is fixed in the inside of the second container cavity 12.
The display unit of the use backlight module of the utility model embodiment comprises backlight module, and above-mentioned backlight module is the backlight module in above-described embodiment.
The display unit of use backlight module of the present utility model because adopt backlight module of the present utility model, effectively solves the thermal expansion problem of LGP, improves the backlight module display quality.
The flexible member of utilization of the present invention in locating dowel and container cavity positions LGP, thereby guarantee that LGP can not move in backlight module, all the time the light source that guarantees the incident light side shines LGP with fixed range, thereby solve because the LGP thermal expansion causes the problem of the optics fluctuation of backlight module, the quality of backlight module is guaranteed thus.
Need to prove:
The expanded by heating direction of LGP is mainly relevant with the layout of self shape of LGP and light source.Along its expansion direction the flexible member that pulling force is provided to the inwall of container cavity is set, can offsets the expanded by heating of LGP, LGP is stablized motionless when being heated.On the other hand, along its expansion direction, the part plate body of LGP also might be shunk by the extruding of the plate body of other parts, this contraction also may cause the LGP displacement, for addressing this problem, in the utility model, the flexible member that pressure is provided to the inwall of container cavity is set along its expansion direction, also can offset the expanded by heating of LGP, LGP be stablized motionless when being heated.
As preferred embodiment of the present utility model; setting monolateral light inlet mode in the present embodiment describes the technical program; be understandable that; light source is not limited only to a kind of mode of monolateral light inlet in the backlight module; can also be two minor face light inlets; two long limits light inlet; the set-up modes such as four limit light inlets; under these light inlet modes; also can produce the problem of LGP expanded by heating; flexible member described in application the utility model provides pressure or pulling force to offset the expanded by heating of LGP to the inwall of container cavity; LGP is stablized motionless when being heated; also belong to protection domain of the present utility model, do not do at this and give unnecessary details.
The above only is preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (11)
1. backlight module, comprise LGP, it is characterized in that, be provided with container cavity on the described LGP, described container cavity extends along the direction of the expanded by heating of described LGP, the inside of described container cavity is provided with flexible member, and described flexible member provides pressure or pulling force to the inwall of described container cavity, so that described LGP is stablized when being heated is motionless.
2. backlight module according to claim 1, it is characterized in that, described container cavity comprises the first container cavity that bearing of trend is parallel with the bearing of trend of the lamp bar of backlight module, the flexible member of the inside of described the first container cavity is first spring parallel with described lamp bar, the two ends of described the first spring are connected to the first inwall of described the first container cavity and second inwall relative with described the first inwall, described the first spring provides pulling force to described the first inwall and the second inwall, so that described LGP is stablized when being heated is motionless.
3. backlight module according to claim 2 is characterized in that, described the first container cavity is positioned on the first side away from the lamp bar of described LGP, on the axis perpendicular to described first side that is centered close to described LGP of described the first container cavity.
4. backlight module according to claim 2, it is characterized in that, the middle part of described the first spring is connected with the first mounting cover, the bosom position of described the first container cavity is provided with the first mounting rod perpendicular to described LGP, described the first mounting cover is placed on described the first mounting rod by centre bore, described the first spring is fixed in the inside of described the first container cavity.
5. each described backlight module according to claim 1-4, it is characterized in that, be provided with the opening that extends to away from the first side of lamp bar on the second side of the close lamp bar of described LGP, the inside of described opening is provided with the locating dowel perpendicular to described LGP, described locating dowel is carried out spacing to the inwall of described opening, so that described LGP is stablized when being heated is motionless.
6. backlight module according to claim 5, it is characterized in that, described container cavity comprises the second container cavity that bearing of trend is vertical with the bearing of trend of the lamp bar of backlight module, the flexible member of the inside of described the second container cavity is second spring vertical with described lamp bar, the two ends of described the second spring are connected to the 3rd inwall of described the second container cavity and four inwall relative with described the 3rd inwall, described the second spring provides pressure to described the 3rd inwall and described the 4th inwall, so that described LGP is stablized when being heated is motionless.
7. backlight module according to claim 6, it is characterized in that, the described locating dowel of the inside of described opening is corresponding with described second spring of the inside of described the second container cavity, and the center of circle of an end of described locating dowel is positioned on the axis of corresponding described the second spring.
8. backlight module according to claim 7, it is characterized in that, described opening has two, two described openings lay respectively at the two ends of described second side, described the second container cavity has two, two described the second container cavities lay respectively on the dual-side of vertical described lamp bar of described LGP, the described locating dowel in two described openings respectively with two described the second container cavities in described the second spring corresponding respectively.
9. backlight module according to claim 8 is characterized in that, the center of two described the second container cavities lays respectively on the axis that is parallel to described first side of described LGP.
10. backlight module according to claim 9, it is characterized in that, the middle part of described the second spring is connected with the second mounting cover, the bosom position of described the second container cavity is provided with the second mounting rod perpendicular to described LGP, described the second mounting cover is placed on described the second mounting rod by centre bore, described the second spring is fixed in the inside of described the second container cavity.
11. a display unit of using backlight module is characterized in that, comprises each described backlight module such as claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465353 CN202757022U (en) | 2012-09-12 | 2012-09-12 | Backlight module and display device using backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465353 CN202757022U (en) | 2012-09-12 | 2012-09-12 | Backlight module and display device using backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN202757022U true CN202757022U (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220465353 Expired - Fee Related CN202757022U (en) | 2012-09-12 | 2012-09-12 | Backlight module and display device using backlight module |
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| CN (1) | CN202757022U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759227A (en) * | 2014-01-22 | 2014-04-30 | 深圳市华星光电技术有限公司 | Optical film locating device |
| CN105867020A (en) * | 2016-03-30 | 2016-08-17 | 乐视控股（北京）有限公司 | Backlight module and display device |
| WO2017166503A1 (en) * | 2016-03-30 | 2017-10-05 | 乐视控股（北京）有限公司 | Backlight module and display apparatus |
| CN112771440A (en) * | 2019-09-05 | 2021-05-07 | 瑞仪(广州)光电子器件有限公司 | Backlight module and display device |
| CN112859448A (en) * | 2021-03-17 | 2021-05-28 | 重庆京东方显示照明有限公司 | Adhesive tape, backlight module, display device and preparation method of backlight module |
| CN116794761A (en) * | 2023-08-29 | 2023-09-22 | 惠科股份有限公司 | Backlight module and display device |
-
2012
- 2012-09-12 CN CN 201220465353 patent/CN202757022U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759227A (en) * | 2014-01-22 | 2014-04-30 | 深圳市华星光电技术有限公司 | Optical film locating device |
| CN103759227B (en) * | 2014-01-22 | 2016-03-30 | 深圳市华星光电技术有限公司 | A kind of locating device of blooming piece |
| US9797579B2 (en) | 2014-01-22 | 2017-10-24 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Positioning device for optical membrane |
| CN105867020A (en) * | 2016-03-30 | 2016-08-17 | 乐视控股（北京）有限公司 | Backlight module and display device |
| WO2017166503A1 (en) * | 2016-03-30 | 2017-10-05 | 乐视控股（北京）有限公司 | Backlight module and display apparatus |
| CN112771440A (en) * | 2019-09-05 | 2021-05-07 | 瑞仪(广州)光电子器件有限公司 | Backlight module and display device |
| CN112859448A (en) * | 2021-03-17 | 2021-05-28 | 重庆京东方显示照明有限公司 | Adhesive tape, backlight module, display device and preparation method of backlight module |
| CN112859448B (en) * | 2021-03-17 | 2023-03-14 | 重庆京东方显示照明有限公司 | Adhesive tape, backlight module, display device and preparation method of backlight module |
| US11709311B2 (en) | 2021-03-17 | 2023-07-25 | Chongqing Boe Display Lighting Co., Ltd. | Adhesive tape, backlight module, display device and method for manufacturing backlight module |
| CN116794761A (en) * | 2023-08-29 | 2023-09-22 | 惠科股份有限公司 | Backlight module and display device |
| CN116794761B (en) * | 2023-08-29 | 2023-11-24 | 惠科股份有限公司 | Backlight module and display device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20210912 |
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| CF01 | Termination of patent right due to non-payment of annual fee |