CN202203797U - Backlight source and liquid crystal display - Google Patents
Backlight source and liquid crystal display Download PDFInfo
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- CN202203797U CN202203797U CN201120345774XU CN201120345774U CN202203797U CN 202203797 U CN202203797 U CN 202203797U CN 201120345774X U CN201120345774X U CN 201120345774XU CN 201120345774 U CN201120345774 U CN 201120345774U CN 202203797 U CN202203797 U CN 202203797U
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- heat conduction
- backlight
- conduction material
- embedded
- heat
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Abstract
The utility model discloses a backlight source and a liquid crystal display, relates to the technical field of liquid crystal displays and aims to improve the working performance of the liquid crystal display at low temperature, reduce the power consumption and improve the picture display quality. The backlight source is contacted with a thin film transistor (TFT) substrate with a grid shifting register driving circuit and comprises a supporting frame, a lamp reflecting cover and a light source, wherein a heat conducting material is embedded in the supporting frame; the heat conducting material is used for transmitting the heat absorbed by the lamp reflecting cover from the light source; and the heat is transmitted to the grid shifting register driving circuit on the substrate.
Description
Technical field
The utility model relates to LCD, and (Liquid Crystal Display, LCD) technical field relates in particular to a kind of backlight and LCD.
Background technology
In LCD manufacturing technology field, the low-power consumption of LCD, high-performance and low cost are the targets that each manufacturer is pursued always.In order to reduce the cost of manufacture of LCD; Existing LCD normally makes the shift register drive circuit of being made up of shift register (Gate driver) on the lower glass substrate of display panels; Promptly integrate drive circuit (Gate On Array; GOA), replace traditional drive circuit of forming by the higher gate drivers of cost that outside display panels, is provided with, in order to generation grid impulse signal.LCD with above-mentioned GOA is the GOA LCD.
Though the GOA LCD has reduced the cost of manufacture of device, with respect to the LCD that the gate driver drive circuit is set outside display panels, lower, the less stable of precision; When especially under low temperature environment, working; Its power consumption is higher, poor-performing, and device is difficult to work.
Active matrix liquid crystal display now (Active Matrix Liquid Crystal Display, AMLCD) the amorphous silicon film transistor technologies that adopt more.Under this technology, the shift register drive circuit is set on glass substrate has many restrictions, the characteristic of semiconductor of glass substrate is relatively poor; The precision of making device is lower; Less stable, and temperature can influence semi-conductive energy gap and minority carrier concentration as a semi-conductive important parameter; Can cause certain temperature drift, make and when variations in temperature is big, can not work normally in that the shift register drive circuit is set on the glass substrate.The GOA LCD when low temperature, cut-in voltage V that need static state is adjustable
OnHeighten certain value could open thin film transistor (TFT) (Thin Film Transistor, TFT), but V
OnThat transfers is too high, can shorten the life-span of TFT on the one hand, also can increase the power consumption of device on the other hand, thereby reduces the performance of device.
And; The LCD light source can produce great amount of heat under normal operation, the temperature of lamp reflector can be arrived about 60 ℃, if these heats can not in time scatter and disappear; Will carry out heat to the diffusion barrier in the backlight, last prism film, following prism film and LGP etc.; Cause film material temperature distributing disproportionation, and then the film material generation fold, the LGP perk that make, picture quality influenced.
The utility model content
The utility model embodiment provides a kind of backlight and LCD, in order to improve LCD service behaviour at low temperatures, reduces power consumption, improves the picture display quality.
A kind of backlight that the utility model embodiment provides contacts with the thin film transistor (TFT) TFT substrate that is provided with grid shift register drive circuit, and said backlight comprises bracing frame, lamp reflector and light source; Wherein, the embedded Heat Conduction Material of support frame as described above, this Heat Conduction Material are used to transmit the heat that lamp reflector absorbs from light source, and said heat is delivered to the grid shift register drive circuit on the said substrate.
A kind of LCD that the utility model embodiment provides comprises described backlight.
In sum, the utility model provides a kind of backlight, contacts with the thin film transistor (TFT) TFT substrate that is provided with grid shift register drive circuit, and said backlight comprises bracing frame, lamp reflector and light source; Wherein, the embedded Heat Conduction Material of support frame as described above, this Heat Conduction Material are used to transmit the heat that lamp reflector absorbs from light source; Said heat is delivered to the grid shift register drive circuit on the said substrate; Thereby make to be in the grid shift register drive circuit lower TFT cut-in voltage of need only the higher temperature environment under, just can the drive TFT operate as normal, simultaneously; The TFT of work under less cut-in voltage, the life-span can be longer.In addition, said Heat Conduction Material has also increased the radiating rate of light source, has solved the too high problem that will cause that the liquid crystal display displays image quality is relatively poor of temperature in the lamp reflector.
Description of drawings
The cross-sectional view of the backlight that Fig. 1 provides for the utility model embodiment;
The cross-sectional view of the backlight that Fig. 2 provides for the utility model embodiment;
The structural representation of the bracing frame of the embedded Heat Conduction Material that Fig. 3 provides for the utility model embodiment;
The cross-sectional view of the backlight that Fig. 4 provides for the utility model embodiment;
The front elevational schematic of the backlight that Fig. 5 provides for the utility model embodiment;
The generalized section of the LCD that Fig. 6 provides for the utility model embodiment;
The cross-sectional view of the backlight that Fig. 7 provides for the utility model embodiment;
The cross-sectional view of the backlight that Fig. 8 provides for the utility model embodiment;
The front elevational schematic of the backlight that Fig. 9 provides for the utility model embodiment;
The generalized section of the LCD that Figure 10 provides for the utility model embodiment.
The specific embodiment
The utility model embodiment provides a kind of backlight and LCD, in order to improve LCD service behaviour at low temperatures, reduces power consumption, improves the picture display quality.
A kind of backlight that the utility model embodiment provides goes for the GOA LCD.
The architectural feature of a kind of backlight that the utility model embodiment is provided below in conjunction with accompanying drawing is described.
Embodiment one:
Referring to Fig. 1, a kind of backlight that the utility model provides contacts with the thin film transistor (TFT) TFT substrate 21 that is provided with grid shift register drive circuit 22; Said backlight comprises bracing frame 11, lamp reflector 12 and light source 13; Wherein, support frame as described above 11 embedded Heat Conduction Materials 14, this Heat Conduction Material 14 is used to transmit the heat that lamp reflector 12 absorbs from light source 13; Said heat is delivered to the grid shift register drive circuit 22 on the said substrate; Make be in the lower TFT cut-in voltage of 22 need of grid shift register drive circuit under the higher temperature environment just can the drive TFT operate as normal, simultaneously, also increased the life-span of TFT.
Embodiment two:
Referring to Fig. 2; Preferably; A kind of backlight that the utility model embodiment provides also comprises the heat conduction adhesive tape 15 that adheres between bracing frame 11 and the thin film transistor (TFT) TFT substrate 21, and this heat conduction adhesive tape 15 is used to transmit the heat from the embedded Heat Conduction Material 14 of bracing frame 11; Said heat is delivered to the grid shift register drive circuit 22 on the said substrate 21, and said heat conduction adhesive tape 15 can pass to the heat that Heat Conduction Material 14 absorbs grid shift register drive circuit 22 equably.
Preferably; The adhesion locations of said heat conduction adhesive tape 15 is corresponding with the position of said grid shift register drive circuit 22 on substrate 21; For example, the width of said heat conduction adhesive tape 15 is more than or equal to vertical width of said grid shift register drive circuit 22; Make the area size of said heat conduction adhesive tape 15 satisfy said grid shift register drive circuit 22 and be positioned at fully on the said heat conduction adhesive tape 15, can guarantee whole grid shift register drive circuit 22 thermally equivalents like this.
Preferably; The adhesion locations of said heat conduction adhesive tape 15 and area size satisfies support frame as described above 11 embedded Heat Conduction Materials 14 is all covered; Absorb heat to greatest extent to reach said heat conduction adhesive tape 15, thereby make the heat that grid shift register drive circuit 22 absorbs from said heat conduction adhesive tape 15 to greatest extent from Heat Conduction Material 14.
Said Heat Conduction Material 14 need communicate up and down in support frame as described above 11; Promptly this Heat Conduction Material 14 can contact with the heat conduction adhesive tape 15 that is positioned at above it with the lamp reflector 12 that is positioned at below it simultaneously, and the heat that is beneficial on the lamp reflector 12 more effectively is delivered on the heat conduction adhesive tape 15 through Heat Conduction Material 14.This Heat Conduction Material 14 can be embedded in the bracing frame 11 with shapes such as cylinder or cuboids.
Preferably, support frame as described above 11 embedded Heat Conduction Materials 14 can be to be embedded in the bracing frame 11 with an integral way, also can be divided into a plurality of parts and be embedded in the bracing frame 11, promptly are embedded in the bracing frame 11 with the point mode that looses.For example, as shown in Figure 3, Heat Conduction Material 14 comprises the part of a plurality of cylindrical shapes, is embedded in the bracing frame 11 with the point mode that looses, and promptly each several part Heat Conduction Material 14 is isolated each other and is distributed in the bracing frame 11, thereby can improve the enabling capabilities of bracing frame 11.
When said Heat Conduction Material 14 adopted the point mode that looses to be embedded in the bracing frame 11, the cross-section structure of backlight was as shown in Figure 4, and the front elevational schematic of backlight is as shown in Figure 5.
The LCD that comprises above-mentioned backlight that the utility model embodiment provides, as shown in Figure 6, comprising:
Preferably, the material of said lamp reflector 12 is lightweight Heat Conduction Materials such as aluminum or aluminum alloy.Because lamp reflector 12 is an aluminium matter; Good heat conductivity, the heat that light source 13 is produced is dredged grid shift register drive circuit 22, and is well-known; 22 pairs of temperature of grid shift register drive circuit are very sensitive; Temperature is high more, and the service behaviour of grid shift register drive circuit 22 is good more, can effectively reduce the cut-in voltage of grid shift register drive circuit 22; Harmful heat grid shift register drive circuit 22 that can effectively utilize light source 13 to produce so also carries out effectively scattering and disappearing to 12 heats that gather on the lamp reflector simultaneously.
Embodiment three:
Referring to Fig. 7; A kind of backlight that another embodiment of the utility model provides; Contact with the thin film transistor (TFT) TFT substrate 21 that is provided with grid shift register drive circuit 22, said backlight comprises bracing frame 11, lamp reflector 12 and light source 13, and adheres to the heat conduction adhesive tape 15 between bracing frame 11 and the thin film transistor (TFT) TFT substrate 21; Wherein, support frame as described above 11 embedded Heat Conduction Materials 14; Said lamp reflector 12 embedded Heat Conduction Materials 16, this Heat Conduction Material 16 is used to transmit the heat that absorbs from light source 13, and said heat is delivered to said Heat Conduction Material 14.
The heat that light source 13 sends passes to the grid shift register drive circuit 22 on the said substrate 21 through Heat Conduction Material 16, Heat Conduction Material 14, heat conduction adhesive tape 15 successively, makes that the temperature of this grid shift register drive circuit 22 is higher, and device power consumption is lower.
Preferably; The position of said Heat Conduction Material 16 in lamp reflector 12 is corresponding with the position of said Heat Conduction Material 14 in bracing frame 11; And the area size of said Heat Conduction Material 16 satisfies said Heat Conduction Material 14 and is positioned at fully on the said Heat Conduction Material 16, for example, and the width of said Heat Conduction Material 16; Equal vertical width of said Heat Conduction Material 14; Make that Heat Conduction Material 14 is relative up and down with Heat Conduction Material 16,, and can absorb heat to greatest extent from Heat Conduction Material 16 with assurance Heat Conduction Material 14 thermally equivalents.
Said Heat Conduction Material 16 need communicate up and down in lamp reflector 12; Promptly this Heat Conduction Material 16 can contact with the Heat Conduction Material 14 that is positioned at above it simultaneously; Can directly absorb heat again from light source 13, be beneficial to heat that light source 13 sends to a greater extent ground warp Heat Conduction Material 16 shift and give Heat Conduction Material 14.
Preferably, said lamp reflector 12 embedded Heat Conduction Materials 16 can be that the mode with an overall distribution is embedded in the lamp reflector 12, also can be to be embedded in the lamp reflector 12 with the point mode that looses.
When said Heat Conduction Material 16 adopted the point mode that looses to be embedded in the lamp reflector 12, the cross-section structure of backlight was as shown in Figure 8, and the front elevational schematic of backlight is as shown in Figure 9.
Preferably, the material of said lamp reflector 12 is a heat-insulating material, so that the heat that light source 13 sends is as far as possible all absorbed by Heat Conduction Material 16, and with said heat transferred Heat Conduction Material 14.
The LCD that comprises above-mentioned backlight that the utility model embodiment provides, shown in figure 10, comprising:
In sum, the utility model provides a kind of backlight, comprising: bracing frame, Heat Conduction Material, lamp reflector, light source; This Heat Conduction Material is positioned at the inboard grid shift register drive circuit of display panels lower glass substrate through heating, realized a kind of when environment temperature is low, LCD that can operate as normal.Particularly, being in grid shift register drive circuit under the higher temperature only needs the lower cut-in voltage just can the drive TFT operate as normal; Simultaneously, the TFT of work under less cut-in voltage, the life-span is longer, performance is higher.In addition, this Heat Conduction Material also can improve the radiating rate of light source, has solved the too high relatively poor problem of liquid crystal display displays image quality that will cause of temperature in the lamp reflector.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from the spirit and the scope of the utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof if these of the utility model are revised with modification, then the utility model also is intended to comprise these changes and modification interior.
Claims (10)
1. a backlight contacts with the thin film transistor (TFT) TFT substrate that is provided with grid shift register drive circuit, and said backlight comprises bracing frame, lamp reflector and light source, it is characterized in that:
The embedded Heat Conduction Material of support frame as described above, this Heat Conduction Material are used to transmit the heat that lamp reflector absorbs from light source, and said heat is delivered to the grid shift register drive circuit on the said substrate.
2. backlight according to claim 1 is characterized in that, this backlight also comprises:
Adhere to the heat conduction adhesive tape between bracing frame and the TFT substrate, be used for the said grid shift register of the heat transferred drive circuit that said Heat Conduction Material is transmitted.
3. backlight according to claim 2; It is characterized in that; The adhesion locations of said heat conduction adhesive tape is corresponding with the position of said grid shift register drive circuit on substrate, and the area size of said heat conduction adhesive tape satisfies said grid shift register drive circuit and is positioned at fully on the said heat conduction adhesive tape.
4. backlight according to claim 2 is characterized in that, the adhesion locations of said heat conduction adhesive tape and area size satisfy the Heat Conduction Material that support frame as described above is embedded and all cover.
5. backlight according to claim 2 is characterized in that, the Heat Conduction Material that support frame as described above is embedded contacts with said heat conduction adhesive tape and lamp reflector respectively.
6. according to the described backlight of the arbitrary claim of claim 1-5, it is characterized in that the material of said lamp reflector is a Heat Conduction Material.
7. backlight according to claim 1 is characterized in that, the embedded Heat Conduction Material of said lamp reflector, this Heat Conduction Material are used for from the embedded Heat Conduction Material of the heat transferred support frame as described above of light source.
8. backlight according to claim 7 is characterized in that, the Heat Conduction Material that said lamp reflector is embedded is to be embedded in the said lamp reflector with the point mode that looses.
9. backlight according to claim 1 is characterized in that, the Heat Conduction Material that support frame as described above is embedded is to be embedded in the support frame as described above with the point mode that looses.
10. a LCD is characterized in that, comprises the described backlight of the arbitrary claim of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120345774XU CN202203797U (en) | 2011-09-15 | 2011-09-15 | Backlight source and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120345774XU CN202203797U (en) | 2011-09-15 | 2011-09-15 | Backlight source and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203797U true CN202203797U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120345774XU Expired - Lifetime CN202203797U (en) | 2011-09-15 | 2011-09-15 | Backlight source and liquid crystal display |
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| Country | Link |
|---|---|
| CN (1) | CN202203797U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179631A (en) * | 2017-06-27 | 2017-09-19 | 厦门天马微电子有限公司 | A kind of display device |
| CN108181751A (en) * | 2018-01-30 | 2018-06-19 | 惠州市华星光电技术有限公司 | A kind of liquid crystal module and liquid crystal display device |
| CN108389556A (en) * | 2018-03-06 | 2018-08-10 | 深圳市华星光电技术有限公司 | TFT-LCD array substrate structure and its GOA circuit temperature compensation methodes |
| CN110161768A (en) * | 2019-05-31 | 2019-08-23 | Oppo广东移动通信有限公司 | Electrochromic device and electronic equipment |
| CN116256913A (en) * | 2023-02-21 | 2023-06-13 | 惠科股份有限公司 | Temperature adjusting method of display device and display device |
-
2011
- 2011-09-15 CN CN201120345774XU patent/CN202203797U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179631A (en) * | 2017-06-27 | 2017-09-19 | 厦门天马微电子有限公司 | A kind of display device |
| CN107179631B (en) * | 2017-06-27 | 2020-08-25 | 厦门天马微电子有限公司 | Display device |
| CN108181751A (en) * | 2018-01-30 | 2018-06-19 | 惠州市华星光电技术有限公司 | A kind of liquid crystal module and liquid crystal display device |
| WO2019148567A1 (en) * | 2018-01-30 | 2019-08-08 | 惠州市华星光电技术有限公司 | Liquid crystal module and liquid crystal display device |
| CN108389556A (en) * | 2018-03-06 | 2018-08-10 | 深圳市华星光电技术有限公司 | TFT-LCD array substrate structure and its GOA circuit temperature compensation methodes |
| CN108389556B (en) * | 2018-03-06 | 2020-12-29 | Tcl华星光电技术有限公司 | TFT-LCD array substrate structure and GOA circuit temperature compensation method thereof |
| CN110161768A (en) * | 2019-05-31 | 2019-08-23 | Oppo广东移动通信有限公司 | Electrochromic device and electronic equipment |
| CN116256913A (en) * | 2023-02-21 | 2023-06-13 | 惠科股份有限公司 | Temperature adjusting method of display device and display device |
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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: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150630 Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150630 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150630 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing city in Western Daxing District economic and Technological Development Zone, Road No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |
|
| CX01 | Expiry of patent term |