CN201651946U - Backlight module and liquid crystal display - Google Patents
Backlight module and liquid crystal display Download PDFInfo
- Publication number
- CN201651946U CN201651946U CN2010201909574U CN201020190957U CN201651946U CN 201651946 U CN201651946 U CN 201651946U CN 2010201909574 U CN2010201909574 U CN 2010201909574U CN 201020190957 U CN201020190957 U CN 201020190957U CN 201651946 U CN201651946 U CN 201651946U
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- module backlight
- light emitting
- emitting diode
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Abstract
The utility model discloses a backlight module and a liquid crystal display, wherein the backlight module comprises a light source and a light guide plate, wherein the light source is arranged on at least one side edge of the light guide plate, the light source is formed by more than two point light sources, and point light sources positioned at two ends are inclined to the outside of the backlight module; and the liquid crystal display comprises an outer frame, a liquid crystal panel, a driving circuit and a backlight module, wherein the backlight module adopts the backlight module. As for the backlight module and the liquid crystal display, the light-emitting diodes of the more than two light-emitting diodes which form the light source positioned at two ends are inclined towards the outside of the backlight module, thus being capable of enhancing the light intensity of dark area at two ends in the horizontal direction of the backlight source and leading the screen brightness of the whole backlight source to be uniform.
Description
Technical field
The utility model relates to lcd technology, relates in particular to a kind of module backlight and LCD.
Background technology
LCD (Liquid Crystal Display, hereinafter to be referred as: LCD) have characteristics such as volume is little, power consumption is little, radiationless, all obtaining very much progress aspect screen size and the display quality, is that computer monitor or television set aspect all replace CRT fast and become the mainstream product in the market.
LCD is an active optical component, but itself is non-luminous, and the backlight assembly that therefore need be installed in LCD backboard face provides light source to show drawing.Present stage, the light source as backlight assembly had following several form: cold-cathode fluorescence lamp CCFL, LED, hot-cathode fluorescent lamp HCFL or external electrode fluorescent lamp EEFL, wherein the LED-backlit source has the high advantage of slimming, low-power consumption and brightness, LED is just replacing traditional CCFL, as the backlight of LCD.Adopt the LCD of side-light type LED at present, the light path schematic diagram of its back light can be as shown in Figure 1, the LED lamp adopts horizontal mode to provide light source for LCD in the prior art, be subjected to the restriction of radiation direction, ray density in the zone at two ends, the LGP left and right sides is significantly less than other parts, be brightness disproportionation, as shown in Figure 2, the brightness that brightness ratio B point that zone line A is ordered and C are ordered is high by about 30%.
As from the foregoing, LED forms the lamp bar in horizontal mode in the prior art, and the light source that provides for LCD, has the shortcoming of brightness irregularities, makes the dark space can occur at the two ends of LCD picture horizontal direction.
The utility model content
The utility model provides a kind of module backlight and LCD, and is even to realize LCD picture brightness.
The utility model provides a kind of module backlight, comprise light source and LGP, described light source is arranged at least one side of described LGP, and described light source is arranged by plural spot light and formed, and the spot light that is positioned at two ends is obliquely installed to the described module backlight outside.
On described LGP, be provided with light accepting part near the one or both ends of described light source one side.
Above-mentioned spot light is a light emitting diode.
The angle of inclination that is positioned at the light emitting diode at two ends is 0～θ/2, and θ is the lighting angle of light emitting diode.
The light emitting diode that is positioned at two ends is obliquely installed to the described module backlight outside and is specially:
The lamp bar two ends of carrying described light emitting diode are provided with kink, and described light emitting diode and described lamp bar be arranged in parallel, and the light emitting diode that is positioned at two ends is obliquely installed to the described module backlight outside; Or
The lamp bar that carries described light emitting diode is horizontally disposed with, and the light emitting diode and the described lamp bar that are positioned at described lamp bar two ends are obliquely installed to the described module backlight outside at an angle, and other light emitting diodes and described lamp bar be arranged in parallel.
Light accepting part on the described LGP is provided with concentration structure.
Described concentration structure is prismatic structure, semicircular structure or trapezium structure.
The utility model also provides a kind of LCD, comprises outside framework, liquid crystal panel, drive circuit and module backlight, and described module backlight adopts above-mentioned module backlight.
The circuit board that carries described drive circuit is arranged on the light source outside of module backlight.
Module backlight and LCD that the utility model provides, to form in the plural light emitting diode of light source, the light emitting diode that is positioned at two ends is obliquely installed to the described module backlight outside, and light accepting part is set at the correspondence position of LGP, can strengthen the light intensity of dark space, backlight horizontal direction two ends, make that entire backlight source picture brightness is even.
Description of drawings
Fig. 1 is the light path schematic diagram of side-light type module backlight in the prior art;
Fig. 2 is the light distribution schematic diagram of side-light type module backlight in the prior art;
Fig. 3 is the structural representation one of module backlight among the utility model embodiment;
Fig. 4 is the structural representation of LED lamp bar among the utility model embodiment;
Fig. 5 is the position view of the LED of the utility model embodiment medium dip setting;
Fig. 6 is the structural representation of light accepting part on the LGP among the utility model embodiment;
Fig. 7 is the light path schematic diagram of middle light accepting part embodiment illustrated in fig. 6;
Fig. 8 is the structural representation two of module backlight among the utility model embodiment.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
At the shortcoming that has the dark space in the prior art at side-light type back light horizontal direction two ends.The utility model embodiment provides a kind of module backlight, Fig. 3 is the structural representation one of module backlight among the utility model embodiment, as shown in Figure 3, module backlight comprises light source 1 and LGP 2, described light source 1 is arranged at least one side of described LGP 2, described light source 1 is arranged by plural spot light and is formed, and the spot light that is positioned at two ends is obliquely installed to the described module backlight outside, and concrete can be that light emitting diode 3 is obliquely installed to the described module backlight outside.
In the foregoing description of the present utility model, by in the plural light emitting diode that will form light source, the light emitting diode that is positioned at two ends is obliquely installed to the described module backlight outside, can strengthen the light intensity of dark space, backlight horizontal direction two ends, make that entire backlight source picture brightness is even.
On the basis of the foregoing description, can be further on LGP 2, be provided with light accepting part near the one or both ends of described light source 1 one sides, further, can be provided with light accepting part 21 at two ends near described light source 1 one sides.Above-mentioned correspondence position at LGP is provided with light accepting part, can improve the reception of the light that the light source (light emitting diode) that is obliquely installed is sent, and improves the light intensity of dark space, backlight horizontal direction two ends.
In the above embodiment of the present invention, the light emitting diode that will be positioned at two ends is obliquely installed to the described module backlight outside and can be divided into two kinds of situations: the one, and make the lamp bar two ends of the described light emitting diode of carrying be provided with kink, described light emitting diode and described lamp bar be arranged in parallel, and the light emitting diode that is positioned at two ends is obliquely installed to the described module backlight outside, embodiment for example shown in Figure 8, this kind embodiment is fit to use the LED of lateral emitting.The 2nd, the lamp bar of the described light emitting diode of carrying is horizontally disposed with, the light emitting diode and the described lamp bar that are positioned at described lamp bar two ends are obliquely installed to the described module backlight outside at an angle, other light emitting diodes and described lamp bar be arranged in parallel, embodiment as shown in Figure 3 and Figure 4, this kind embodiment is fit to use the LED of top light emitting.Fig. 4 has given the structural representation of a kind of LED lamp bar among the utility model embodiment, and the LED that is positioned at LED lamp bar two ends is obliquely installed, and changing the LED light direction, and the enhancing of light intensity is carried out in the zone, dark space that exists, to improve the uniformity of picture brightness.
In addition as shown in Figure 5, the angle of inclination that is positioned at the LED at two ends can be 0～θ/2, and wherein θ is the lighting angle of light emitting diode.By the angle of inclination of 0～θ/2 is set, the led section light at two ends can be distributed to backlight horizontal direction two ends, and the time near the angle of θ/2, the light that the LED that is obliquely installed sends is basically perpendicular to the incidence surface of the light accepting part of LGP, what can guarantee LED goes out allotment that light tries one's best at the place, dark space, two ends of LGP, can prevent the Hotspot formation of (the picture phenomenon that light and shade replaces appears in picture) again.
As shown in Figure 3, LGP 2 is provided with light accepting part 21, and with the light source of better reception from LED, the light accepting part on the above-mentioned in addition LGP can be provided with concentration structure.Fig. 6 has provided a kind of schematic diagram of concrete concentration structure, and the structure of prismatic promptly is set in the side near light source of light accepting part, and above-mentioned in addition concentration structure can also be semicircular structure or trapezium structure etc.Micro-structural on the above-mentioned LGP can design moulding by mould.
Light path after Fig. 7 has provided and handled by concentration structure shown in Figure 6, above-mentioned concentration structure make light going direction by in the middle of LGP or far-end turn to dark space, backlight horizontal direction two ends, so just can improve the light intensity of above-mentioned zone.Find by optical analog, by adopting the technical scheme of the foregoing description, improved the brightness of dark spaces, backlight horizontal direction two ends greatly, can make the luminance difference distance of dark space brightness and zone line dwindle, luminance difference can drop to 11.3%.
When the circuit that carries out LED connects, can be earlier x LED to be carried out parallel connection, again the LED of the x after the parallel connection is carried out the series connection of n group, because the pad (PAD) of the IC circuit on module number mostly is even number greatly, therefore can carry out the even number set series connection according to actual quantity, and the leg of the LED at two ends is regulated.
The utility model embodiment also provides a kind of LCD, and this LCD comprises outside framework, liquid crystal panel, drive circuit and module backlight, the module backlight that module backlight wherein adopts the foregoing description to provide.
The LCD that the utility model embodiment provides by using the two-terminal led sidelight light source that is obliquely installed, can improve the brightness of dark space, backlight horizontal direction two ends, for liquid crystal panel evenly provides light source, to improve the picture quality of LCD.
The LCD of the use side-light type back light that the utility model embodiment provides, wherein the lamp bar that is made of a plurality of LED can be arranged on the metallic hard material, so both can reduce cost, and special-shaped the processing such as can bend again.
The module backlight that provides of the foregoing description in addition, be fit to be applied on the light and thin notebook computer, as shown in Figure 8, when the above-mentioned metallic hard material bending that is used to support a plurality of LED is provided with, can form certain space, in concrete implementation process, the circuit board 31 of carrying drive circuit can be arranged on light source 32 outsides of module backlight, with the saving space, and avoid because of the hollow foreign matter that falls into.
Module backlight and LCD that the utility model the foregoing description provides, in the plural light emitting diode that will form light source, the light emitting diode that is positioned at two ends is obliquely installed to the described module backlight outside, and light accepting part is set at the correspondence position of LGP, can strengthen the light intensity of dark space, backlight horizontal direction two ends, make that entire backlight source picture brightness is even.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (9)
1. module backlight, comprise light source and LGP, described light source is arranged at least one side of described LGP, it is characterized in that, described light source is arranged by plural spot light and is formed, and the spot light that is positioned at two ends is obliquely installed to the described module backlight outside.
2. module backlight according to claim 1 is characterized in that, on described LGP, be provided with light accepting part near the one or both ends of described light source one side.
3. module backlight according to claim 1 and 2 is characterized in that, described spot light is a light emitting diode.
4. module backlight according to claim 3 is characterized in that, the angle of inclination that is positioned at the light emitting diode at two ends is 0～θ/2, and θ is the lighting angle of light emitting diode.
5. module backlight according to claim 3 is characterized in that, the light emitting diode that is positioned at two ends is obliquely installed to the described module backlight outside and is specially:
The lamp bar two ends of carrying described light emitting diode are provided with kink, and described light emitting diode and described lamp bar be arranged in parallel, and the light emitting diode that is positioned at two ends is obliquely installed to the described module backlight outside; Or
The lamp bar that carries described light emitting diode is horizontally disposed with, and the light emitting diode and the described lamp bar that are positioned at described lamp bar two ends are obliquely installed to the described module backlight outside at an angle, and other light emitting diodes and described lamp bar be arranged in parallel.
6. module backlight according to claim 3 is characterized in that the light accepting part on the described LGP is provided with concentration structure.
7. module backlight according to claim 6 is characterized in that, described concentration structure is prismatic structure, semicircular structure or trapezium structure.
8. a LCD comprises outside framework, liquid crystal panel, drive circuit and module backlight, it is characterized in that, described module backlight adopts the arbitrary described module backlight of claim 1～7.
9. LCD according to claim 8 is characterized in that, the circuit board that carries described drive circuit is arranged on the light source outside of module backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201909574U CN201651946U (en) | 2010-05-11 | 2010-05-11 | Backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201909574U CN201651946U (en) | 2010-05-11 | 2010-05-11 | Backlight module and liquid crystal display |
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| Publication Number | Publication Date |
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| CN201651946U true CN201651946U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201909574U Expired - Lifetime CN201651946U (en) | 2010-05-11 | 2010-05-11 | Backlight module and liquid crystal display |
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| CN (1) | CN201651946U (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518975A (en) * | 2011-12-06 | 2012-06-27 | 深圳市华星光电技术有限公司 | Light bar assembly and backlight module |
| CN102705744A (en) * | 2012-06-15 | 2012-10-03 | 深圳市华星光电技术有限公司 | Light emitting diode (LED) lamp strip and lateral-entering type backlight module using same |
| CN102913812A (en) * | 2011-08-01 | 2013-02-06 | 瀚宇彩晶股份有限公司 | Light source module structure |
| CN103632615A (en) * | 2012-08-23 | 2014-03-12 | 群康科技(深圳)有限公司 | Displayer |
| US9016893B2 (en) | 2012-10-11 | 2015-04-28 | Boe Technology Group Co., Ltd. | LED lamp |
| US9028126B2 (en) | 2012-06-15 | 2015-05-12 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LED light bar and side-edge backlight module using same |
| CN105652363A (en) * | 2016-03-30 | 2016-06-08 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN106324907A (en) * | 2016-09-13 | 2017-01-11 | 京东方科技集团股份有限公司 | Lamp bar, backlight module and display device |
| WO2017173673A1 (en) * | 2016-04-06 | 2017-10-12 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN107270180A (en) * | 2017-06-28 | 2017-10-20 | 维沃移动通信有限公司 | A kind of backlight module, display module and mobile terminal |
| CN107436509A (en) * | 2016-05-27 | 2017-12-05 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| US20200225539A1 (en) * | 2017-09-18 | 2020-07-16 | HKC Corporation Limited | Display device |
| CN111679498A (en) * | 2020-06-22 | 2020-09-18 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN112002217A (en) * | 2020-09-10 | 2020-11-27 | 上海中航光电子有限公司 | Splicing type backlight module and display device |
| CN114675450A (en) * | 2022-03-29 | 2022-06-28 | 北京京东方显示技术有限公司 | Light bar, backlight module and display device |
| CN115877611A (en) * | 2022-12-06 | 2023-03-31 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
-
2010
- 2010-05-11 CN CN2010201909574U patent/CN201651946U/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913812A (en) * | 2011-08-01 | 2013-02-06 | 瀚宇彩晶股份有限公司 | Light source module structure |
| CN102518975A (en) * | 2011-12-06 | 2012-06-27 | 深圳市华星光电技术有限公司 | Light bar assembly and backlight module |
| CN102705744A (en) * | 2012-06-15 | 2012-10-03 | 深圳市华星光电技术有限公司 | Light emitting diode (LED) lamp strip and lateral-entering type backlight module using same |
| WO2013185395A1 (en) * | 2012-06-15 | 2013-12-19 | 深圳市华星光电技术有限公司 | Led light strip and side-type backlight module using same |
| CN102705744B (en) * | 2012-06-15 | 2014-10-15 | 深圳市华星光电技术有限公司 | Light emitting diode (LED) lamp strip and lateral-entering type backlight module using same |
| US9028126B2 (en) | 2012-06-15 | 2015-05-12 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LED light bar and side-edge backlight module using same |
| CN103632615A (en) * | 2012-08-23 | 2014-03-12 | 群康科技(深圳)有限公司 | Displayer |
| US9016893B2 (en) | 2012-10-11 | 2015-04-28 | Boe Technology Group Co., Ltd. | LED lamp |
| CN105652363A (en) * | 2016-03-30 | 2016-06-08 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN105652363B (en) * | 2016-03-30 | 2019-04-05 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| WO2017173673A1 (en) * | 2016-04-06 | 2017-10-12 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| US10261240B2 (en) | 2016-04-06 | 2019-04-16 | Wuhan China Star Optoelectronics Technology Co., Ltd | Backlight module and liquid crystal display |
| CN107436509A (en) * | 2016-05-27 | 2017-12-05 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN106324907A (en) * | 2016-09-13 | 2017-01-11 | 京东方科技集团股份有限公司 | Lamp bar, backlight module and display device |
| CN107270180A (en) * | 2017-06-28 | 2017-10-20 | 维沃移动通信有限公司 | A kind of backlight module, display module and mobile terminal |
| US20200225539A1 (en) * | 2017-09-18 | 2020-07-16 | HKC Corporation Limited | Display device |
| US11073724B2 (en) * | 2017-09-18 | 2021-07-27 | HKC Corporation Limited | Display device |
| CN111679498A (en) * | 2020-06-22 | 2020-09-18 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN112002217A (en) * | 2020-09-10 | 2020-11-27 | 上海中航光电子有限公司 | Splicing type backlight module and display device |
| CN114675450A (en) * | 2022-03-29 | 2022-06-28 | 北京京东方显示技术有限公司 | Light bar, backlight module and display device |
| CN114675450B (en) * | 2022-03-29 | 2023-08-25 | 北京京东方显示技术有限公司 | Lamp strip, backlight module and display device |
| CN115877611A (en) * | 2022-12-06 | 2023-03-31 | 深圳创维－Rgb电子有限公司 | Backlight module 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 economic and Technological Development Zone, West Central Road, No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. 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 economic and Technological Development Zone, West Central Road, No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |