CN101881402A - Light emitting diode light source structure - Google Patents

Light emitting diode light source structure Download PDF

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Publication number
CN101881402A
CN101881402A CN2010102351273A CN201010235127A CN101881402A CN 101881402 A CN101881402 A CN 101881402A CN 2010102351273 A CN2010102351273 A CN 2010102351273A CN 201010235127 A CN201010235127 A CN 201010235127A CN 101881402 A CN101881402 A CN 101881402A
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CN
China
Prior art keywords
light
emitting diode
lgp
light emitting
source structure
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Pending
Application number
CN2010102351273A
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Chinese (zh)
Inventor
刘勇鑫
蔡永生
吴宜宁
蔡佳勋
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AU Optronics Corp
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AU Optronics Corp
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Application filed by AU Optronics Corp filed Critical AU Optronics Corp
Priority to CN2010102351273A priority Critical patent/CN101881402A/en
Publication of CN101881402A publication Critical patent/CN101881402A/en
Pending legal-status Critical Current

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Abstract

The invention provides a light emitting diode light source structure, which comprises a light guide plate, a reflection cover and a plurality of light emitting diodes. The reflection cover is provided with a reflection structure and covers one side edge of the light guide plate. A gap is left between the reflection cover and the side edge and the reflection structure is opposite to the side edge of the light guide plate. The light emitting diodes are arranged in the gap between the light guide plate and the reflection cover and the light emitting sides thereof face the reflection structure which reflects the light from the light emitting diodes into the light guide plate. When the light emitting diode light source structure of the invention is adopted, the light shape of the light emitting sides is broken up by the reflection structure and then evenly reflected into the light guide plate to eliminate the uneven development phenomenon of a back light module.

Description

A kind of light-emitting diode light source structure
Technical field
The present invention relates to a kind of light-source structure, relate in particular to the light-emitting diode light source structure in a kind of module backlight that is applicable to liquid crystal indicator.
Background technology
Along with development of science and technology, add the arrival of digital times, promoted the flourish of LCD market.LCD because have that high image quality, volume are little, in light weight, numerous advantages such as low driving voltage and low consumpting power.Therefore be widely used in PDA(Personal Digital Assistant), mobile phone, shoot with video-corder projector, on consumer communication such as mobile computer, desktop display, automobile-used display and projection TV or the electronic product, and replace cathode-ray tube gradually, and become the main flow of display.
LCD can be seated in light source the side of panel in order to satisfy lightening demand, and present widely used light source is a light emitting diode, and it has energy-saving and environmental protection, life-span length, low consumption, low-heat, high brightness, advantage such as miniature.But what differ from cold cathode ray fluorescent tube is, light emitting diode is a spot light, and therefore, for spot light being become line source and area source, LGP arises at the historic moment.LGP is the acryl sheet material that utilizes optical grade, with having the high reflectivity and the high-tech material of extinction not, stamps the leaded light point in the acryl sheet material bottom surface of optical grade then.The light that utilizes optical grade acryl sheet material to draw to send from lamp is in the stop on optical grade acryl sheet material surface, and when light was mapped to each leaded light point, reverberation can destroy conditioned reflex by the positive ejaculation of LGP then toward all angles diffusion.By various densitys, leaded light point not of uniform size, can make the LGP uniformly light-emitting.
Yet even if used LGP, with light emitting diode during as light source, LGP still can dark space at interval occur because incident light source is uneven, and this phenomenon is called develop uneven (Mura).
The method that reduces the development uneven phenomenon at present is the distance that reduces between the light emitting diode, and the method certainly will need to increase an arrangement number of light emitting diode, the increase that its cost also just must be directly proportional virtually.Secondly, on the LGP plane of light inlet side, add micro-structural, but ejaculation of its micro-structural and bad control in LGP manufacturing process, and can't hundred-percent moulding, and this manufacturing process must improve the cost that mould is made.
Therefore, thus how the conventional lighting sources structure is improved and is eliminated the development uneven phenomenon and be called problem demanding prompt solution in the industry.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of light-emitting diode light source structure, in order to eliminate the development uneven phenomenon.
According to one embodiment of the invention, a kind of light-emitting diode light source structure is proposed, comprise a LGP; One reflector has a catoptric arrangement, and reflector covers a side of LGP, and has the side of a space and catoptric arrangement and LGP to be oppositely arranged between the side; And a plurality of light emitting diodes, in the space between LGP and reflector, its emission side is towards catoptric arrangement, and catoptric arrangement is reflected into LGP with the light that light emitting diode sends.
Preferable, be the concave structure that joins and form by a plurality of inclined-planes.
Preferable, catoptric arrangement is a smooth concave curved surface.
Preferable, catoptric arrangement has a plurality of projection cube structures.
Preferable, catoptric arrangement is a smooth convex surface.
Wherein, light emitting diode is distributed in the space along the side linear averaging.
Use its advantage of light-emitting diode light source structure provided by the invention to be, evenly inject LGP after can the light type of light emitting diode being broken up by catoptric arrangement, the light emitting diode of spot light is formed line source, become uniform surface light source via LGP again, thereby eliminate the development uneven phenomenon of module backlight.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of appended accompanying drawing:
Fig. 1 illustrates the light-source structure schematic diagram of liquid crystal indicator in the prior art;
Fig. 2 illustrates the another schematic diagram of the light-source structure of liquid crystal indicator in the prior art;
Fig. 3 illustrates the schematic diagram according to one embodiment of the invention;
Fig. 4 illustrates the schematic diagram according to further embodiment of this invention; And
Fig. 5 illustrates the schematic diagram according to yet another embodiment of the invention.
The specific embodiment
Below will and describe clear explaination spirit of the present invention in detail with accompanying drawing, any those of ordinary skill in the art is after understanding preferred embodiment of the present invention, when can be by the disclosed technology of the present invention, change and modification, and do not break away from spirit of the present invention and scope.
Please refer to Fig. 1, it illustrates the light-source structure schematic diagram of liquid crystal indicator in the prior art.Evenly disperse out after the light diffusion that LGP 100 is used for light source is injected.Reflector 102 is lighttight frameworks, and its side with LGP 100 covers fully.In the space that forms between reflector 102 and LGP 100, a plurality of light emitting diodes 106 that are installed on the striation 104 (light bar) are the linear averaging distribution, and its quantity is decided according to the size of liquid crystal indicator.The emission side of light emitting diode 106 is towards LGP 100, and its light is injected LGP 100, shown in arrow among the figure.
Please refer to Fig. 2 this moment, and it illustrates the another schematic diagram of the light-source structure of liquid crystal indicator in the prior art.Because the thickness of LGP 100 is spaced apart greater than light emitting diode 106 and light emitting diode 106, therefore reflective diode 106 inject LGP 100 light some be to tilt to inject LGP 100 at an angle, shown in arrow among the figure, so just caused the overlapping part of the light launched by two adjacent light emitting diodes 106 bright excessively, and the part of less incident ray is dark excessively, be dark space 200, thereby produced develop uneven (mura).
Then please refer to Fig. 3, it illustrates the schematic diagram according to one embodiment of the invention.Evenly disperse out after the light diffusion that LGP 100 is used for light source is injected.Reflector 302 is lighttight frameworks, and its side with LGP 100 covers fully.Have first reflecting slant 304 and second reflecting slant 306 on the inwall of reflector 302, its inclination angle all is 45 degree, and joining forms a concave structure.First reflecting slant 304 and second reflecting slant 306 are oppositely arranged with the side of LGP 100.In the space that forms between reflector 302 and LGP 100, a plurality of light emitting diodes 106 that are installed on the striation 104 (lightbar) are the linear averaging distribution, and its quantity is decided according to the size of liquid crystal indicator.First reflecting slant 304 of the emission side of light emitting diode 106 on reflector 302 inwalls.Because the existence of first reflecting slant 304 and second reflecting slant 306, after the light that light emitting diode 106 is launched reflects via first reflecting slant 304, a part enters LGP 100, another part enters LGP 100 after through second reflecting slant, 306 secondary reflections, shown in arrow among the figure.Because the thickness of LGP 100 is greater than the height of light emitting diode 106, so light reflected is injected LGP 100 from the light emitting diode top with both sides.And when the height of the thickness of LGP 100 and light emitting diode 106 near the time, the light of reflection can enter LGP 100 from the both sides of light emitting diode 106.After the reflection through first LGP 304 and second LGP 306, more even when the light of light emitting diode 106 enters LGP 100, reduced the concentration class of light, make the light inlet zone bigger after the diffusion, reduce the formation of dark space, thereby improved the development uneven phenomenon.
Please refer to Fig. 4 below, it illustrates the schematic diagram according to further embodiment of this invention.Reflector 402 is lighttight frameworks, and its side with LGP 100 covers fully.On the inwall of reflector 402, has a smooth reflective concave curved surface 404.In the space that forms between reflector 402 and LGP 100, a plurality of light emitting diodes 106 that are installed on the striation 104 (light bar) are the linear averaging distribution, and its quantity is decided according to the size of liquid crystal indicator.The emission side of light emitting diode 106 is reflective concave curved surface 404 on reflector 402 inwalls.Because the existence of reflective concave curved surface 404, more even when the light that light emitting diode 106 is launched enters LGP 100 after via reflective concave curved surface 404 reflection, reduced the concentration class of light, make the light inlet zone bigger after the diffusion, reduce the formation of dark space, thereby improved the development uneven phenomenon.
Please refer to Fig. 5, it illustrates the schematic diagram according to yet another embodiment of the invention.Catoptric arrangement 502 on reflector 500 inwalls is the leg-of-mutton projection cube structures with two inclined-planes, in the space that between reflector 500 and LGP 100, forms, the a plurality of light emitting diodes 106 that are installed on the striation 104 (not illustrating) are the linear averaging distribution, and its quantity is decided according to the size of liquid crystal indicator.The emission side of light emitting diode 106 is catoptric arrangement 502 on reflector 500 inwalls.Through the reflection of catoptric arrangement 502, light is gone into LGP 100 from the both sides oblique fire of light emitting diode 106, shown in arrow among the figure, has so just reduced the concentration class of light, thereby improves the development uneven phenomenon.In addition, catoptric arrangement 502 also can be made into smooth convex surface pattern, and the angle of incidence of light LINEAR CONTINUOUS of its reflection changes, and breaks up to have better effect.
Use the invention has the advantages that, evenly inject LGP after by catoptric arrangement the light type of light emitting diode being broken up, the light emitting diode of spot light is formed line source, become uniform surface light source via LGP again, thereby eliminate the development uneven phenomenon of module backlight.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.

Claims (6)

1. a light-emitting diode light source structure is applicable in the module backlight of liquid crystal indicator, and it is characterized in that, described light-source structure comprises at least:
One LGP;
One reflector has a catoptric arrangement, and described reflector covers a side of described LGP, and has the described side of a space and described catoptric arrangement and described LGP to be oppositely arranged between the described side; And
A plurality of light emitting diodes, in the described space between described LGP and described reflector, its emission side is towards described catoptric arrangement,
Wherein, described catoptric arrangement light that described light emitting diode is sent is reflected into described LGP.
2. light-emitting diode light source structure according to claim 1 is characterized in that, described catoptric arrangement is the concave structure that is joined and formed by a plurality of inclined-planes.
3. light-emitting diode light source structure according to claim 1 is characterized in that, described catoptric arrangement is a smooth concave curved surface.
4. light-emitting diode light source structure according to claim 1 is characterized in that described catoptric arrangement has a plurality of projection cube structures.
5. light-emitting diode light source structure according to claim 1 is characterized in that, described catoptric arrangement is a smooth convex surface.
6. light-emitting diode light source structure according to claim 1 is characterized in that, described light emitting diode is distributed in the described space along described side linear averaging.
CN2010102351273A 2010-07-21 2010-07-21 Light emitting diode light source structure Pending CN101881402A (en)

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Application Number Priority Date Filing Date Title
CN2010102351273A CN101881402A (en) 2010-07-21 2010-07-21 Light emitting diode light source structure

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CN101881402A true CN101881402A (en) 2010-11-10

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102522487A (en) * 2011-12-05 2012-06-27 深圳市华星光电技术有限公司 Liquid-crystal display device and LED (Light-Emitting Diode) packaging structure thereof
CN102606952A (en) * 2012-03-06 2012-07-25 深圳市华星光电技术有限公司 Reflective incidence backlight module and liquid crystal display device
CN103292192A (en) * 2013-06-19 2013-09-11 苏州信亚科技有限公司 High-efficiency LED lamp
US8814378B2 (en) 2011-12-05 2014-08-26 Shenzhen China Star Optoelectronics Technology Co., Ltd. LCD device and LED package structure thereof
CN104180241A (en) * 2013-05-22 2014-12-03 扬升照明股份有限公司 Backlight module
WO2016086473A1 (en) * 2014-12-03 2016-06-09 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
CN109312906A (en) * 2016-05-04 2019-02-05 亮锐控股有限公司 Molded light guide for the optical coupled light from LED
CN109683398A (en) * 2019-02-22 2019-04-26 惠州市华星光电技术有限公司 Backlight module and display device
CN110515236A (en) * 2019-08-20 2019-11-29 深圳市华星光电技术有限公司 Backlight module and display device
CN112051639A (en) * 2020-09-11 2020-12-08 深圳市利航电子有限公司 Bright backlight source structure
US11061281B2 (en) 2019-08-20 2021-07-13 Tcl China Star Optoelectronics Technology Co., Ltd. Backlight module and display device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8814378B2 (en) 2011-12-05 2014-08-26 Shenzhen China Star Optoelectronics Technology Co., Ltd. LCD device and LED package structure thereof
CN102522487A (en) * 2011-12-05 2012-06-27 深圳市华星光电技术有限公司 Liquid-crystal display device and LED (Light-Emitting Diode) packaging structure thereof
CN102606952A (en) * 2012-03-06 2012-07-25 深圳市华星光电技术有限公司 Reflective incidence backlight module and liquid crystal display device
US9383497B2 (en) 2013-05-22 2016-07-05 Young Lighting Technology Inc. Backlight module
CN104180241A (en) * 2013-05-22 2014-12-03 扬升照明股份有限公司 Backlight module
CN103292192A (en) * 2013-06-19 2013-09-11 苏州信亚科技有限公司 High-efficiency LED lamp
WO2016086473A1 (en) * 2014-12-03 2016-06-09 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
US9910204B2 (en) 2014-12-03 2018-03-06 Shenzhen China Star Optoelectronics Technology Co, Ltd. Backlight module and liquid crystal display
CN109312906A (en) * 2016-05-04 2019-02-05 亮锐控股有限公司 Molded light guide for the optical coupled light from LED
US11378730B2 (en) 2016-05-04 2022-07-05 Lumileds Llc Illumination structure including cavity and TIR structure
CN109683398A (en) * 2019-02-22 2019-04-26 惠州市华星光电技术有限公司 Backlight module and display device
CN110515236A (en) * 2019-08-20 2019-11-29 深圳市华星光电技术有限公司 Backlight module and display device
WO2021031404A1 (en) * 2019-08-20 2021-02-25 Tcl华星光电技术有限公司 Backlighting module and display device
US11061281B2 (en) 2019-08-20 2021-07-13 Tcl China Star Optoelectronics Technology Co., Ltd. Backlight module and display device
CN112051639A (en) * 2020-09-11 2020-12-08 深圳市利航电子有限公司 Bright backlight source structure

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Application publication date: 20101110

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