CN201803239U - LED unilateral light backlight module and liquid crystal display device thereof - Google Patents
LED unilateral light backlight module and liquid crystal display device thereof Download PDFInfo
- Publication number
- CN201803239U CN201803239U CN2010205285620U CN201020528562U CN201803239U CN 201803239 U CN201803239 U CN 201803239U CN 2010205285620 U CN2010205285620 U CN 2010205285620U CN 201020528562 U CN201020528562 U CN 201020528562U CN 201803239 U CN201803239 U CN 201803239U
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- led
- lgp
- liquid crystal
- light inlet
- light
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 16
- 230000002146 bilateral effect Effects 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 4
- 241000254158 Lampyridae Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005282 brightening Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000005142 aphototropism Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Abstract
The utility model discloses an LED unilateral light backlight module, comprising a light guide plate and an LED which is arranged at the lateral side of the light guide plate, wherein the LED is only arranged at one lateral side of the light guide plate. The utility model also discloses an LED unilateral light liquid crystal display device. The utility model can replace the traditional bilateral light LED backlight module for various liquid crystal display devices.
Description
Technical field
The utility model relates to a kind of LED-backlit module and liquid crystal indicator thereof, especially relates to the one-sided light inlet of a kind of LED module backlight and liquid crystal indicator thereof.
Background technology
Owing to LED has energy-saving and environmental protection, good multiple outstanding advantages such as color effect are widely used in the various products, comprise that the module backlight that is used for liquid crystal indicator is to replace traditional fluorescent lamp.The module backlight of available liquid crystal display unit is divided into down straight aphototropism mode set and side-light type module backlight usually, and wherein, side-light type module backlight all adopts the both sides light inlet mode that led light source is set in the LGP two opposite sides to design backlight.But, use bilateral light inlet mode to have following shortcoming:
1, it is many that LED uses the lamp number, control design more complicated on the LED power drives; Module heat radiation acquires a certain degree of difficulty, the follow-up service life that impacts module backlight, performance or the like;
2, use the expensive brightening film sheet of price on the module backlight, visible angle when having increased whole cost of module and brightening film sheet use and can reduce LCD TV and watch;
3, the more lamps of arrangement on the regular length pcb board need increase light guide plate with long limit of lamp and the alignment of LGP height, bring the increasing of LGP consumption under cost increase and the situation of the former material short supply of LGP nowadays.
The utility model content
The utility model provides the one-sided light inlet of a kind of LED module backlight and liquid crystal indicator thereof in order to solve complicated, the cost high-technology problem of driving design that prior art LED-backlit module uses bilateral light inlet mode to cause.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is the design one-sided light inlet of a kind of LED module backlight, comprises a LGP and the LED that is arranged on the LGP side, and described LED only is arranged on a side of LGP.
Described LED is a high-capacity LED.
The minor face of described LED and the alignment of LGP height limit.
Described bottom surface of light guide plate is provided with the leaded light site, and the density of described leaded light site is being arranged to than sparse away from the LED place near the LED place.
The utility model also provides a kind of LED one-sided light inlet liquid crystal indicator, comprise a LCDs and the one-sided light inlet of LED module backlight, wherein, the one-sided light inlet of described LED module backlight comprises a LGP and is arranged on the LED of LGP side that described LED only is arranged on a side of LGP.
Described LED is a high-capacity LED.
The minor face of described LED and the alignment of LGP height limit.
Described bottom surface of light guide plate is provided with the leaded light site, and the density of described leaded light site is being arranged to than sparse away from the LED place near the LED place.
The utility model is by the design concept that breaks traditions, the bilateral light inlet mode of traditional LED-backlit module should be the one-sided light inlet of LED, only at the LGP one side design LED of module backlight lamp bar, make that driving design becomes simple, solved the heat dissipation problem and the module life performance problem of bilateral light inlet mode, cost is also lower simultaneously.
Description of drawings
Below in conjunction with embodiment and accompanying drawing the utility model is elaborated, wherein:
Fig. 1 is the structural representation of the one-sided light inlet of the utility model LED module backlight;
Fig. 2 is the bottom surface of light guide plate leaded light site design diagram of the one-sided light inlet of the utility model LED module backlight.
The specific embodiment
See also Fig. 1.The one-sided light inlet of the utility model LED module backlight comprises LGP 1, LED 2, reflector 3 and diffuser plate 4.Wherein, diffuser plate 4, LGP 1 and reflector 3 are stacked successively and fix by housing, are different from the both sides that traditional LED2 is separately positioned on LGP 1, and the utility model LED 2 only is arranged on a side of LGP 1.For make light that LED2 sends more uniform high-efficiency incide diffuser plate, be provided with leaded light site 11 in the bottom surface of LGP 2.Owing to use one-sided light inlet, reduced the number of the LED that uses, in order to guarantee brightness backlight, so LED adopts high-power LED.The LED that preferably uses at the utility model has high current drives, and the encapsulation that luminous efficiency is high is such as 3020 encapsulation, drive current 60mA, power 0.2W, light efficiency 100lm/W; The encapsulation of 7020 twin-core sheets, drive current 93mA, power 0.6W, light efficiency 110lm/W is with first-class.LED arranges and LED minor face and the alignment of LGP height limit need have been reduced light guide plate on the one hand, has made full use of the light that LED sends on the one hand.
Because LED has used high-capacity LED, the spacing between two LED increases, and therefore, if without particular design, is prone to light and dark lamp pearl (" firefly ") phenomenon in big spacing lower back optical mode group, has a strong impact on display effect.Therefore, in order to solve this technical problem, the utility model makes for light guide plate mesh point effect process before lamp is carried out in design in the leaded light site 11 of design LGP 1 bottom surface.See also Fig. 2.LGP 1 is sparse away from the led light source place at the density ratio of the leaded light site 11 at close led light source place, thereby has widened the light mixing distance of LED, has effectively eliminated " firefly " phenomenon.And by selecting suitable high-capacity LED, can only use diffusion sheet, the blast sheet that does not re-use traditional backlight module just can meet the requirements of brightness and visual angle.
The utility model module backlight is by choosing two good diffusion sheets of collocation performance, use the most cheap blooming piece of price, can reach the brightness and the visual angle of module requirement, on the module brightness value, reach about 300nits, reach 85% on the brightness uniformity, meet the international standard of LCD TV listing fully.The utility model can reach the optimized design of quality and cost by selected LED lamp specification brightness and collocation blooming piece.
The utility model uses the encapsulation drive current big, and the LED lamp that luminous efficiency is high uses less LED quantity on the lamp bar, can design better simply drive circuit on the one hand, solves heat dissipation problem and module life performance problem; LED design attitude on the lamp bar can reduce the thickness and the consumption of LGP with the narrow limit alignment LGP LGP of lamp on the one hand, saves cost; LED lamp luminosity height can the low diffusion sheet of use cost in the blooming piece collocation.
The utlity model has following advantage:
1, backlight module light source design scheme uses drive current big, and the LED type that luminous efficiency is high solves module single-sided illumination mode, and it is simple to reach circuit design, the purpose that the backlight module heat dispersion is good;
2, backlight module LGP design comprises light guide plate, light guide plate mesh point design form, effectively eliminates " firefly " phenomenon that the LED spacing causes greatly;
3, backlight module optical film framework, nearly all backlight module uses the blast sheet in the diaphragm collocation, and the utility model does not use the blast sheet, the diffusion sheet of only arranging in pairs or groups;
4, only use one-sided LED, simplified the structure of backlight module, cost is lower.
The utility model LED unilateral light backlight module can be used for various liquid crystal indicators, for LCDs provides light source, and such as liquid crystal display, LCD TV etc.
Claims (8)
1. the one-sided light inlet of a LED module backlight comprises a LGP and the LED that is arranged on the LGP side, and it is characterized in that: described LED only is arranged on a side of LGP.
2. the one-sided light inlet of LED according to claim 1 module backlight is characterized in that: described LED is a high-capacity LED.
3. the one-sided light inlet of LED according to claim 1 module backlight is characterized in that: the minor face of described LED and the alignment of LGP height limit.
4. the one-sided light inlet of LED according to claim 1 module backlight, it is characterized in that: described bottom surface of light guide plate is provided with the leaded light site, and the density of described leaded light site is being arranged to than sparse away from the LED place near the LED place.
5. one-sided light inlet liquid crystal indicator of LED, comprise a LCDs and the one-sided light inlet of LED module backlight, wherein, the one-sided light inlet of described LED module backlight comprises a LGP and is arranged on the LED of LGP side that it is characterized in that: described LED only is arranged on a side of LGP.
6. the one-sided light inlet liquid crystal indicator of LED according to claim 5 is characterized in that: described LED is a high-capacity LED.
7. the one-sided light inlet liquid crystal indicator of LED according to claim 5 is characterized in that: the minor face of described LED and the alignment of LGP height limit.
8. the one-sided light inlet liquid crystal indicator of LED according to claim 5, it is characterized in that: described bottom surface of light guide plate is provided with the leaded light site, and the density of described leaded light site is being arranged to than sparse away from the LED place near the LED place.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2010205285620U CN201803239U (en) | 2010-09-10 | 2010-09-10 | LED unilateral light backlight module and liquid crystal display device thereof |
Applications Claiming Priority (1)
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CN2010205285620U CN201803239U (en) | 2010-09-10 | 2010-09-10 | LED unilateral light backlight module and liquid crystal display device thereof |
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CN201803239U true CN201803239U (en) | 2011-04-20 |
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CN2010205285620U Expired - Fee Related CN201803239U (en) | 2010-09-10 | 2010-09-10 | LED unilateral light backlight module and liquid crystal display device thereof |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102748656A (en) * | 2012-06-11 | 2012-10-24 | 歌尔声学股份有限公司 | Side-in type light-emitting diode (LED) backlight device and method for eliminating firefly phenomenon of same |
CN103032773A (en) * | 2012-12-26 | 2013-04-10 | 广州大学 | LED (Light-Emitting Diode) backlight module based on liquid crystal display television |
WO2014032303A1 (en) * | 2012-08-27 | 2014-03-06 | 深圳市华星光电技术有限公司 | Lcd device |
-
2010
- 2010-09-10 CN CN2010205285620U patent/CN201803239U/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102748656A (en) * | 2012-06-11 | 2012-10-24 | 歌尔声学股份有限公司 | Side-in type light-emitting diode (LED) backlight device and method for eliminating firefly phenomenon of same |
CN102748656B (en) * | 2012-06-11 | 2016-01-20 | 歌尔声学股份有限公司 | A kind of method of side entering-type LED backlight source apparatus and its firefly phenomenon of elimination |
WO2014032303A1 (en) * | 2012-08-27 | 2014-03-06 | 深圳市华星光电技术有限公司 | Lcd device |
CN103032773A (en) * | 2012-12-26 | 2013-04-10 | 广州大学 | LED (Light-Emitting Diode) backlight module based on liquid crystal display television |
CN103032773B (en) * | 2012-12-26 | 2015-06-03 | 广州大学 | LED (Light-Emitting Diode) backlight module based on liquid crystal display television |
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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: 20110420 Termination date: 20160910 |
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CF01 | Termination of patent right due to non-payment of annual fee |