CN2807292Y - LCD back light source with LED as light source - Google Patents
LCD back light source with LED as light source Download PDFInfo
- Publication number
- CN2807292Y CN2807292Y CNU2005200540701U CN200520054070U CN2807292Y CN 2807292 Y CN2807292 Y CN 2807292Y CN U2005200540701 U CNU2005200540701 U CN U2005200540701U CN 200520054070 U CN200520054070 U CN 200520054070U CN 2807292 Y CN2807292 Y CN 2807292Y
- Authority
- CN
- China
- Prior art keywords
- light source
- led
- liquid crystal
- crystal display
- back light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model relates to a back light source which uses an LED light source for liquid crystal display. The existing back light source for liquid crystal display mostly uses a cold cathode tube; the existing back light source for liquid crystal display has the disadvantage that a high-pressure high voltage power source is used by the existing back light source for liquid crystal display and an EL sheet is mostly adopted by a liquid crystal back light source of a mobile phone; the existing back light source for liquid crystal display has the advantage of thinness and has the disadvantages of fast brightness decay and short service life. The utility model uses a light emitting diode an LED as light source. The utility model is characterized in that the back light source which uses an LED light source for liquid crystal display has the basic structure that a base board of the back light source adopts a light conducting board; the periphery of the light conducting board is invisibly inlaid in a light emitting diode LED or a skim sheet or an integrated tube core; silkscreen print daylight materials are printed on one surface of the light conducting board. When the LED emits light, the surface of the whole light conducting board become a soft surface light source; therefore, the back light source for liquid crystal display can be realized. The utility model has the advantages of low power consumption, low-voltage direct current, long service life, multiple colors and no high-frequency interferences. On the periphery of the light conducting board, the light emitting diode is sealed by adhesive and a reflection film is additionally arranged on the light emitting diode. The utility model belongs to the application field of photoelectron and new materials.
Description
Technical field
Belong to optoelectronics and new material application.
Background technology
Now general LCD backlight source is used cold-cathode tube more, advantage brightness height, and shortcoming is the high-voltage power supply that needs high pressure.
The mobile phone LCD backlight source, many applied films cold light source EL EL sheet, it is very thin that advantage can be done, and shortcoming is that the life-span is short, and brightness easily decays, and also need go up a few kilocycle high frequency electric sources of hectovolt, easily wave interference.
The utility model has become soft area source to the LED pointolite by light guide plate and lighting material, realizes LCD backlight source.Advantage is that dc low-voltage does not have wave interference, low-power consumption, life-span long.
Belong to photoelectron and new material application.
Summary of the invention
Basic structure of the present utility model is: LCD backlight source substrate light guide plate, and light guide plate periphery end face is carved into groove or set out optical diode LED or LED paster are inlayed in the hole, or the integrated chip that welds, and sticks with glue the agent encapsulation afterwards, and reflective membrane is sticked in the outside.The LED light-emitting area is perpendicular to the light guide plate end face, light directive light guide plate.
A surperficial silk-screen thin layer lighting material of light guide plate.
Behind the LED electrified light emitting, light is through the complicated optical principle of light guide plate and lighting material thin layer, and the whole surface light emitting of light guide plate has then become the LED pointolite area source of soft double-side, for increase needs the luminous intensity of light-emitting area, reflective membrane is sticked at the back side.
Description of drawings
Fig. 1 is the backlight synoptic diagram
1 is light guide plate (a surperficial silk-screen thin layer lighting material).
2 is hole or the groove that light guide plate periphery end face bores or is carved into.
3 for inlaying the LED (LED luminotron or paster or integrated chip) in light guide plate periphery end-face hole or the groove.
Annotate: LED luminotron or paster or chip in advance on printed circuit board (PCB) the grouping series and parallel weld.
Embodiment
The area size of light guide plate is cut out according to the size requirements of LCDs, and periphery becomes the equidistant holes or the groove of rule with milling machine or laser engraving.Also available Shooting Technique forms hole or groove, and the degree of depth in hole and diameter, the degree of depth of groove and width can be inlayed and advance light-emitting diodes and LED or paster or the integrated chip that welds with printed circuit board (PCB).
According to the DC voltage of selecting for use, LED packet chain and form connect.It is good to stick with glue the agent packaging protection then, pastes reflective membrane again.
A kind of embodiment shows large-screen lc, adopts the LED luminotron.
A kind of embodiment, in, the small screen liquid crystal display, adopt the LED paster.
A kind of embodiment to mobile phone display screen, because of thickness below the 1.3mm, adopts the integrated chip welding.
LED adopts LED luminotron or the paster or the chip of single spectrum, two spectrum, three primary colours according to actual needs.Or pure white light.
The thickness of light guide plate depends on the LCDs of the LED size of employing and practical application and decides.
Industrial applicibility
To large-screen lc show and general in, the smaller screen liquid crystal display, on technology, all realize well. To mobile phone The LCDs of using is considered very thin thickness, need to have in the special manufacturer processing made to order.
Use
Be applied to large-screen lc and show laptop computer liquid crystal display, mobile phone liquid crystal display, other liquid crystal The backlight field such as show. Also can be applicable to the dull and stereotyped attached lighting field that helps.
Claims (1)
1, a kind of employing led light source is as LCD backlight source, it is characterized in that basic structure is: the backlight substrate adopts light guide plate, surperficial silk-screen thin layer lighting material layer of light guide plate, hole or latent LED or LED paster or the integrated chip that advances to weld of inlaying of groove are bored or be carved into to substrate periphery on printed circuit board (PCB), the vertical light guide plate end face of LED light-emitting area, stick with glue the agent encapsulation afterwards, paste reflective membrane outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200540701U CN2807292Y (en) | 2005-01-28 | 2005-01-28 | LCD back light source with LED as light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200540701U CN2807292Y (en) | 2005-01-28 | 2005-01-28 | LCD back light source with LED as light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2807292Y true CN2807292Y (en) | 2006-08-16 |
Family
ID=36921592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200540701U Expired - Fee Related CN2807292Y (en) | 2005-01-28 | 2005-01-28 | LCD back light source with LED as light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2807292Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825266A (en) * | 2010-04-30 | 2010-09-08 | 福建捷联电子有限公司 | LED light tube power panel applied to liquid crystal display |
| US7905618B2 (en) | 2007-07-19 | 2011-03-15 | Samsung Led Co., Ltd. | Backlight unit |
| CN101556401B (en) * | 2008-04-09 | 2012-05-23 | 群康科技(深圳)有限公司 | Liquid crystal display device |
| CN102635811A (en) * | 2007-07-19 | 2012-08-15 | 三星Led株式会社 | Back light unit |
| CN102929038A (en) * | 2012-10-10 | 2013-02-13 | 无锡博一光电科技有限公司 | Liquid crystal display module (LCM) |
| CN101634777B (en) * | 2009-02-27 | 2013-03-27 | 超亮显示系统（深圳）有限公司 | Ultra-high brightness LED matrix straight-downward backlight module applied to large-scale LCD |
-
2005
- 2005-01-28 CN CNU2005200540701U patent/CN2807292Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7905618B2 (en) | 2007-07-19 | 2011-03-15 | Samsung Led Co., Ltd. | Backlight unit |
| US8220944B2 (en) | 2007-07-19 | 2012-07-17 | Samsung Led Co., Ltd. | Backlight unit |
| CN102635811A (en) * | 2007-07-19 | 2012-08-15 | 三星Led株式会社 | Back light unit |
| US8764212B2 (en) | 2007-07-19 | 2014-07-01 | Samsung Electronics Co., Ltd. | Backlight unit |
| US9519184B2 (en) | 2007-07-19 | 2016-12-13 | Samsung Electronics Co., Ltd. | Backlight unit |
| CN101556401B (en) * | 2008-04-09 | 2012-05-23 | 群康科技(深圳)有限公司 | Liquid crystal display device |
| CN101634777B (en) * | 2009-02-27 | 2013-03-27 | 超亮显示系统（深圳）有限公司 | Ultra-high brightness LED matrix straight-downward backlight module applied to large-scale LCD |
| CN101825266A (en) * | 2010-04-30 | 2010-09-08 | 福建捷联电子有限公司 | LED light tube power panel applied to liquid crystal display |
| CN101825266B (en) * | 2010-04-30 | 2013-08-21 | 福建捷联电子有限公司 | LED light tube power panel applied to liquid crystal display |
| CN102929038A (en) * | 2012-10-10 | 2013-02-13 | 无锡博一光电科技有限公司 | Liquid crystal display module (LCM) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen JDL Industry Co., Ltd. Assignor: Zhang Yangjing Contract fulfillment period: 2009.7.28 to 2014.7.27 Contract record no.: 2009440001119 Denomination of utility model: LCD back light source with LED as light source Granted publication date: 20060816 License type: Exclusive license Record date: 20090813 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.7.28 TO 2014.7.27; CHANGE OF CONTRACT Name of requester: SHENZHEN JUNDUOLI INDUSTRY CO., LTD. Effective date: 20090813 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060816 Termination date: 20110128 |