CN201540425U - Back light module device of liquid crystal display - Google Patents
Back light module device of liquid crystal display Download PDFInfo
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- CN201540425U CN201540425U CN2009201342212U CN200920134221U CN201540425U CN 201540425 U CN201540425 U CN 201540425U CN 2009201342212 U CN2009201342212 U CN 2009201342212U CN 200920134221 U CN200920134221 U CN 200920134221U CN 201540425 U CN201540425 U CN 201540425U
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- guide plate
- light guide
- light
- light source
- led
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- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000000295 complement effect Effects 0.000 claims abstract description 3
- 230000020169 heat generation Effects 0.000 abstract 1
- 230000002146 bilateral effect Effects 0.000 description 4
- 238000004020 luminiscence type Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model relates to a back light module device of a liquid crystal display, comprising a light guide plate and light source modules arranged on the sides of the edges of the light guide plate, wherein the length of the short side of the side of the assembled light source of the light guide plate is greater than the thickness of the light guide plate, and the complement angle of the edge angle Alpha thereof is greater than or equal to the angle of total reflection of the light guide plate material, which corresponds to the light of the light source module. The utility model guides in the light source from the inclined plane of the edge of the light guide plate, enlarges the area of the incident light plane of the light guide plate without enlarging the thickness of the light guide plate, can reduce the thickness of the light guide plate and improve the utilization ratio of light under the same condition of LED light, or can use a larger-packaged LED light, obtain higher LED luminous efficiency and utilization ratio of light, and reduce heat generation under the same condition.
Description
Technical field the utility model relates to LCDs, relates in particular to a kind of backlight module device of LCDs.
Background technology is along with development of science and technology, and the technology of LCDs is more and more ripe, and TV is also from using traditional kinescope liquid crystal display till now.Because LCDs is passive luminous display screen, liquid crystal itself is not luminous, so need module backlight that light source is provided.Divide from the classification of light source, can be divided into CCFL module backlight, LED-backlit module etc.
The LED-backlit module is classified according to the LED position, can be divided into direct-light type LED backlight module and LED side module backlight.It is thin a lot of that the thickness of LED side module backlight can be done than straight-down negative, also can save partial L ED lamp simultaneously, and not influence homogeneity.In general in the LED side module backlight, light guide plate accounts for a very consequence.Because side core backlight is exactly to rely on light guide plate that the light of LED lamp is changed into area source from pointolite.
The development trend of flat panel TV is more and more slimming, and the thickness of light guide plate is also wanted corresponding and reduced gradually.A bottleneck is arranged in the design of light guide plate, and along with reducing of light guide plate, the incidence surface that LED light is injected is also more and more littler, and the utilization factor of light has reduced.
Light guide plate and LED lamp 100 are installed later relative position as shown in Figure 1 in the prior art, and this is the structural representation of bilateral lamp module backlight in the prior art, show the profile figure after light guide plate and lamp plate are installed.Light guide plate generally all is the design of rectangle, LED light is injected from the cross section, and in light guide plate total reflection takes place, and microstructure is arranged at the light guide plate bottom, for example be printed with from close to sources to the distance light source from small to large, clump is dredged close site (not shown among the site of bottom surface of light guide plate or microstructure Fig. 1).Last light penetrates from exiting surface, becomes area source.Along with reducing of light guide plate, the incidence surface that LED light is injected is also more and more littler, and the utilization factor of light can reduce.Therefore increase the incidence surface of light guide plate and do not increase light guide plate and become very important.
Utility model content the purpose of this utility model is to provide a kind of backlight module device of LCDs, increases the incidence surface of light guide plate and does not increase light guide plate, has improved the light utilization efficiency of light source.
The backlight module device of the disclosed a kind of LCDs of the utility model comprises light guide plate and the light source module that is installed in side, described light guide plate edge; The length of side of the minor face of the side of the assembling light source of described light guide plate is greater than the thickness of described light guide plate.
The complementary angle of the edge angle [alpha] of the side of described assembling light source is greater than or equal to the angle of total reflection corresponding to the light of described light source module of light guide plate material, and promptly (90-α) is greater than the angle of total reflection.
Described light source module is LED lamp and lamp plate thereof.
The side of the assembling light source of described light guide plate is the left and right sides of symmetry, both sides perhaps, perhaps the side of the assembling light source of described light guide plate is left and right, last or a downside side wherein, perhaps the side of the assembling light source of described light guide plate is left and right, last or downside three sides wherein, and perhaps the side of the assembling light source of described light guide plate is left and right, last or downside.
The backlight module device of the disclosed a kind of LCDs of the utility model imports the inclined-plane of light source from the light guide plate edge, increase light guide plate incidence surface area and do not need to increase light guide plate.Utilize the present invention, can be under the condition of using identical LED lamp, the thickness that reduces light guide plate improves the utilization factor of light, perhaps can use bigger encapsulated LED lamp under the same conditions, obtain the higher LED luminescence efficiency and the utilization factor of light, and can reduce heating.
Description of drawings
Fig. 1 is the structural representation of bilateral lamp module backlight in the prior art.
Fig. 2 is the structural representation of the bilateral lamp module backlight of the utility model preferred embodiment.
Embodiment is described in further detail the utility model below in conjunction with the drawings and specific embodiments.
Core of the present utility model is that the parallel square-section that light guide plate is traditional is made the inclined-plane into, and as shown in Figure 2, the incidence surface of light guide plate is a hypotenuse, and traditional design is a leg.By Pythagorean theorem as can be known, hypotenuse is greater than right-angle side.So the thickness of light guide plate no longer is the restriction of LED lamp 100.Compare with traditional design, the light guide plate of same thickness can adopt bigger LED lamp 100, all can be than little packaged LED lamp aspect should heat radiation in luminescence efficiency with the big packaged LED lamp of constant power.Therefore utilize the present invention, can be under the condition of using identical LED lamp 100, the thickness that reduces light guide plate improves the utilization factor of light, perhaps can use bigger encapsulated LED lamp 100 under the same conditions, obtain the higher LED luminescence efficiency and the utilization factor of light, and can reduce heating.
As a specific embodiment, be the structural representation of the bilateral lamp module backlight of the utility model preferred embodiment as shown in Figure 2, the edge of the two sided of light guide plate is the inclined-plane of the length of side greater than light guide plate, and led light source module and LED lamp plate thereof are directly installed on this inclined-plane.The leg-of-mutton α angle that indicates among the figure, 90 degree-α must be greater than or equal to the angle of total reflection of light guide plate material.Can make more light can enter that light guide plate in light guide plate total reflection takes place like this and light leak not.
For single sided lamp, three side lamps, the LED edge-lit-backlights module of four side lamps, can method for designing according to the present invention implement, the edge of side that is the assembling light source of light guide plate is the inclined-plane of the length of side greater than light guide plate, led light source module and LED lamp plate thereof are directly installed on this inclined-plane, and the angle on chamfered edge edge is α, and (90-α) must be greater than or equal to the angle of total reflection of light guide plate material.
Claims (7)
1. the backlight module device of a LCDs comprises light guide plate and the light source module that is installed in side, described light guide plate edge; It is characterized in that the length of side of the minor face of the side of the assembling light source of described light guide plate is greater than the thickness of described light guide plate.
2. as power 1 described backlight module device, it is characterized in that the complementary angle of the edge angle [alpha] of the side of described assembling light source is greater than or equal to the angle of total reflection corresponding to the light of described light source module of light guide plate material.
3. as power 2 described backlight module devices, it is characterized in that described light source module is LED lamp and lamp plate thereof.
4. as power 2 described backlight module devices, it is characterized in that the side of the assembling light source of described light guide plate is the left and right sides of symmetry, perhaps both sides up and down.
5. as power 2 described backlight module devices, it is characterized in that the side of the assembling light source of described light guide plate is left and right, last or a downside side wherein.
6. as power 2 described backlight module devices, it is characterized in that the side of the assembling light source of described light guide plate is left and right, last or downside three sides wherein.
7. as power 2 described backlight module devices, it is characterized in that the side of the assembling light source of described light guide plate is left and right, last or downside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201342212U CN201540425U (en) | 2009-07-24 | 2009-07-24 | Back light module device of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201342212U CN201540425U (en) | 2009-07-24 | 2009-07-24 | Back light module device of liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201540425U true CN201540425U (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201342212U Expired - Fee Related CN201540425U (en) | 2009-07-24 | 2009-07-24 | Back light module device of liquid crystal display |
Country Status (1)
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| CN (1) | CN201540425U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401300A (en) * | 2011-11-10 | 2012-04-04 | 友达光电股份有限公司 | Backlight module |
| CN103162193A (en) * | 2013-03-25 | 2013-06-19 | 南京中电熊猫液晶显示科技有限公司 | Light-emitting diode (LED) backlight module |
| CN104240617A (en) * | 2013-06-14 | 2014-12-24 | 绿光创新公司 | Illuminated display board having an angled light source |
| CN104421770A (en) * | 2013-09-11 | 2015-03-18 | 联想(北京)有限公司 | Backlight module and display device |
| CN106842698A (en) * | 2016-12-28 | 2017-06-13 | 安徽连达光电科技有限公司 | A kind of side entering type lamp bar backing structure |
| CN114624810A (en) * | 2022-05-17 | 2022-06-14 | 深圳市北泰显示技术有限公司 | Backlight unit light source inclined touch screen |
-
2009
- 2009-07-24 CN CN2009201342212U patent/CN201540425U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401300A (en) * | 2011-11-10 | 2012-04-04 | 友达光电股份有限公司 | Backlight module |
| CN102401300B (en) * | 2011-11-10 | 2014-10-15 | 友达光电股份有限公司 | Backlight module |
| CN103162193A (en) * | 2013-03-25 | 2013-06-19 | 南京中电熊猫液晶显示科技有限公司 | Light-emitting diode (LED) backlight module |
| CN104240617A (en) * | 2013-06-14 | 2014-12-24 | 绿光创新公司 | Illuminated display board having an angled light source |
| CN104240617B (en) * | 2013-06-14 | 2019-02-12 | 绿光创新公司 | Illumination display board with inclination light source |
| CN104421770A (en) * | 2013-09-11 | 2015-03-18 | 联想(北京)有限公司 | Backlight module and display device |
| CN106842698A (en) * | 2016-12-28 | 2017-06-13 | 安徽连达光电科技有限公司 | A kind of side entering type lamp bar backing structure |
| CN114624810A (en) * | 2022-05-17 | 2022-06-14 | 深圳市北泰显示技术有限公司 | Backlight unit light source inclined touch screen |
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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: FLAT PANEL DISPLAY TECHNOLOGY CENTER, NANHAI, FOSH |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518053 KONKA GROUP DEVELOPMENT CENTER, OVERSEAS CHINESE TOWN, SHENZHEN CITY, GUANGDONG PROVINCE TO: 518053 NO.9008, SHENNAN AVENUE, OVERSEAS CHINESE CITY, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101213 Address after: 518053 Nanshan District, Guangdong overseas Chinese town Shennan Road, No. 9008, No. Co-patentee after: Foshan Nanhai Panel Display Technology Center Patentee after: Konka Group Co., Ltd. Address before: 518053 Konka Group Development Center, Huaqiao Town, Shenzhen, Guangdong Patentee before: Konka Group Co., Ltd. |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Konka Group Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20160724 |