CN101256307A - Directly-down backlight module unit - Google Patents
Directly-down backlight module unit Download PDFInfo
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- CN101256307A CN101256307A CNA2008100346589A CN200810034658A CN101256307A CN 101256307 A CN101256307 A CN 101256307A CN A2008100346589 A CNA2008100346589 A CN A2008100346589A CN 200810034658 A CN200810034658 A CN 200810034658A CN 101256307 A CN101256307 A CN 101256307A
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- led light
- light source
- guiding device
- mode set
- down straight
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Abstract
The invention discloses a direct illumination-type backlight module using the LED light source. The direct illumination-type backlight module comprises a backplate; a plurality of LED light sources adhesive to the backplate; a printed circuit board above the backplate and electrically connected with the LED light source and provided with an opening for the LED light source at the corresponding position of the LED light source; a reflection piece above the printed circuit board and provided with an opening for the LED light source at the corresponding position of the LED light source; a guide light device comprising a bottom and a light extraction face on the reflection piece and provided with a column groove at the corresponding position of the LED light source at the bottom, wherein the groove bottom of the column groove is of conoid and is coated with the reflection material. The direct illumination-type backlight module is favourable to the ultra thinning processe of the liquid crystal display device with good heat emission effect.
Description
Technical field
The present invention relates to a kind of backlight liquid crystal display module, particularly a kind of down straight aphototropism mode set of using led light source.
Background technology
At present, LCD has been the main flow in flat pannel display field.Module backlight is one of key part and component of LCD, because LCDs itself is not luminous, the function of module backlight just provides enough brightness and the light source that is evenly distributed, and makes its normally show image.Compare with other back light, the most significant advantage of led light source is that unprecedented color reducibility can be provided.By LED that selects suitable wavelength and the color film that is complementary with it, the color rendition scope in LED-backlit source can reach more than 105% even 120% of NTSC (NTSC) standard.Comparatively speaking, traditional cathode ray tube (CRT) TV has only about 85%, and the LCD TV of CCFL backlight has only 65%～75% especially.In image quality is exactly the demonstration industry of life, and having more, gay colours will be an overwhelming advantage.On serviceable life, LED can reach more than 100,000 hours.To contain fatal mercuryvapour different with CCFL, and LED is a semiconductor solid-state optical source, is a kind of ideal green light source fully.
The led light source that existing down straight aphototropism mode set is used is to arrange the plurality of LEDs particle and form the led light source array by certain requirement on backboard, in order to reach purpose in the even bright dipping of exiting surface, the light that must have certain space that the led light source array is sent carries out " mixing ", the intergranular spacing of arranging of LED is big more, " mixing " distance that needs is also just big more, so the intergranular height (being the thickness of module backlight) of arranging spacing size and module exiting surface backlight of LED has much relations, but for cost consideration, the spacing of arranging between the LED should be too not little (quantity that is the LED particle should be not too much), so just can not make and adopt the down straight aphototropism mode set of led light source to reach desirable thickness, thereby be difficult to realize the slimming design.And the led light source array is in work, and the efficient that is converted into luminous energy because of electric energy is not high, can produce a large amount of heat energy, as can not effectively dispelling the heat, can make LED produce frequency drift, and spectral width increases thereupon, influences excitation.LED is overheated simultaneously also can reduce its luminous intensity, shortens its mission life.
Summary of the invention
For addressing the above problem, the invention provides a kind of down straight aphototropism mode set, the light mixing distance that reduces vertical direction by the light mixing distance that increases horizontal direction reaches the purpose that the thickness of down straight aphototropism mode set reduces, and makes that heat is more effective to be distributed.
For achieving the above object, down straight aphototropism mode set of the present invention comprises: a backboard; Several led light sources stick on the described backboard; One printed circuit board (PCB) places on the described backboard, and described led light source is electrically connected, and the opening that led light source is passed is arranged in the position corresponding with led light source; One reflector plate places on the described printed circuit board (PCB), in the position corresponding with described led light source the opening that led light source is passed is arranged; One guiding device comprises a bottom surface and an exiting surface, places on the described reflector plate, and there is cylindrical groove position corresponding with described led light source on its bottom surface, and the bottom land of described cylindrical groove is a cone shape, and described bottom land applies reflecting material.
The bottom surface of described guiding device is provided with the reflection site, described reflection site to be distributed as with described cylindrical groove be the center, the density of arranging progressively increases, and reaches maximum in the centre position of two cylindrical grooves density.
The exiting surface of described guiding device is provided with the diffusion site, described diffusion site to be distributed as with described cylindrical groove be the center, the density of arranging progressively reduces, and reaches minimum in the centre position of two cylindrical grooves density.
The angle that the bottom land circular conical surface of described cylindrical groove and the bottom surface of described guiding device form increases with the arrange increase of spacing of described led light source.
Down straight aphototropism mode set of the present invention, the light mixing distance that increases horizontal direction by guiding device has reduced the light mixing distance of vertical direction, thereby the thickness of down straight aphototropism mode set is reduced, and helps ultra-thinization of liquid crystal indicator.
Down straight aphototropism mode set of the present invention, directly be fitted in led light source on the backboard, the heat that led light source produced can be transmitted on the backboard quickly, utilize backboard to enlarge area of dissipation, help that heat is more effective to be distributed, LED is worked under relatively low temperature, help suppressing the frequency spectrum drift of LED, keep good excitation, improve the mission life that prolongs LED.
Down straight aphototropism mode set of the present invention because the existence of guiding device is arranged, and has the diffusion site of atomizing effect exiting surface being provided with, and can save diffuser plate or diffusion sheet in the conventional down straight aphototropism mode set.
Description of drawings
Fig. 1 is the decomposing schematic representation of the down straight aphototropism mode set of the embodiment of the invention;
Fig. 2 is the cut-open view of down straight aphototropism mode set among Fig. 1;
Fig. 3 is the assembling synoptic diagram of Fig. 2 dorsulum, led light source, printed circuit board (PCB), reflector plate;
Fig. 4 is the synoptic diagram of guiding device among Fig. 2;
Fig. 5 is the upward view of guiding device among Fig. 4;
Fig. 6 is the a-quadrant network point distribution synoptic diagram of guiding device among Fig. 5;
Fig. 7 is a site distribution schematic diagram on the exiting surface of a-quadrant correspondence of guiding device among Fig. 5.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described:
Fig. 1 is the decomposing schematic representation of the down straight aphototropism mode set of the embodiment of the invention; Fig. 2 is the cut-open view of down straight aphototropism mode set among Fig. 1.As shown in the figure, down straight aphototropism mode set of the present invention comprises a backboard 11; Several led light sources 12 stick on the backboard 11 by certain requirement of arranging by adhesive or scolder; Printed circuit board (PCB) (PCB) 13 places on the backboard 11, and described led light source 12 is electrically connected, and the opening 131 in that the correspondence position of led light source 12 has hollow out to form passes led light source 12; Reflector plate 14 places on the printed circuit board (PCB) 13, and the opening 141 in that the correspondence position of led light source 12 has hollow out to form passes led light source 12; Guiding device 15 places on the reflector plate 14, at the correspondence position of led light source 12 cylindrical groove 151 is arranged.
Fig. 3 is the assembling synoptic diagram of Fig. 2 dorsulum, led light source, printed circuit board (PCB), reflector plate; As shown in the figure, led light source 12 is made up of led chip 121, camera lens 122, heat sink (heat sink) 123, plastic base 124 and lead-in wire (not shown), in the led light source 12 heat sink 123 fully fitted with backboard 11, and the heat that produces during with led chip 121 work is transmitted on the backboard 11 effectively.The structure of the led light source 12 that adopts among the present invention is a prior art, is not giving unnecessary details here.
The led light source 12 of arranging on 13 pairs of backboards 11 of printed circuit board (PCB) is electrically connected, and makes its energy operate as normal.The upwards reflection of light that the light that reflector plate 14 is used for that led chip 121 is sent is propagated at guiding device 15.
Fig. 4 is the synoptic diagram of guiding device among Fig. 2; Fig. 5 is the upward view of guiding device among Fig. 4.The lower surface that this guiding device 15 contacts with reflector plate 14 is the bottom surface, and upper surface on the other side is an exiting surface, and the reflector plate (among the figure for illustrating) of high reflectances is pasted in four sides of guiding device 15.Guiding device 15 is used to change the mixed light direction of the light that led light source 12 produced, and has reduced the light mixing distance of vertical direction by the light mixing distance that increases horizontal direction.It is by the resin material ejection formation, the bottom of the cylindrical groove 151 of its bottom surface is a cone shape, the bottom of cylindrical groove 151 is that bottom land applies reflecting material, the light that led light source 12 is sent can reflect to periphery from circular conical surface, by entering guiding device 15 behind the face of cylinder, through after the mixing of guiding device 15 from the exiting surface outgoing.The angle of inclination of circular conical surface is with the led light source 12 spacing adjustment of arranging, and promptly the angle of the angle that forms of the bottom surface of circular conical surface and guiding device 15 increases with the arrange increase of spacing of led light source 12.
Fig. 6 is the a-quadrant network point distribution synoptic diagram of guiding device among Fig. 5; Fig. 7 is a site distribution schematic diagram on the exiting surface of a-quadrant correspondence of guiding device among Fig. 5.As shown in the figure, the bottom surface of guiding device 15 is provided with reflection site 152, exiting surface is provided with diffusion site 153.The main effect of the site 152 of the bottom surface of guiding device 15 be destroy part light in guiding device 15 total reflection and make light energy distribution more even, avoid luminous energy in guiding device 15 inside because of the total reflection excessive loss, reflection site 152 to be distributed as with cylindrical groove 151 be the center, the density of arranging progressively increases, reach maximum in the centre position of two cylindrical grooves 151 density, as shown in Figure 6.The high density diffusion site 153 of guiding device 15 exiting surfaces makes the surface of exiting surface have atomizing effect, the density of arranging of diffusion site 153 is opposite with the distribution of bottom reflection site 152, the diffusion site 153 of guiding device 15 exiting surfaces is the center with cylindrical groove 151, the density of arranging progressively reduces, and reaches minimum in the centre position of two cylindrical grooves 151 density.
The high density of the reflection site 152 of cylindrical groove 151 and guiding device 15 bottom surfaces and guiding device 15 exiting surfaces diffusion site 153 can be in guiding device 15 one-shot forming during by the resin material ejection formation.
The foregoing description only is used to illustrate the present invention, and those skilled in the art can make various modifications or replacement to embodiments of the invention, and does not depart from spirit of the present invention, and these modifications or replacement should be considered as dropping in protection scope of the present invention.
Claims (4)
1, a kind of down straight aphototropism mode set is characterized in that, comprising:
One backboard;
Several led light sources stick on the described backboard;
One printed circuit board (PCB) places on the described backboard, and described led light source is electrically connected, and the opening that led light source is passed is arranged in the position corresponding with led light source;
One reflector plate places on the described printed circuit board (PCB), in the position corresponding with described led light source the opening that led light source is passed is arranged;
One guiding device comprises a bottom surface and an exiting surface, places on the described reflector plate, and there is cylindrical groove position corresponding with described led light source on its bottom surface, and the bottom land of described cylindrical groove is a cone shape, and described bottom land applies reflecting material.
2, down straight aphototropism mode set as claimed in claim 1, it is characterized in that the bottom surface of described guiding device is provided with the reflection site, described reflection site to be distributed as with described cylindrical groove be the center, the density of arranging progressively increases, and reaches maximum in the centre position of two cylindrical grooves density.
3, down straight aphototropism mode set as claimed in claim 1, it is characterized in that the exiting surface of described guiding device is provided with the diffusion site, described diffusion site to be distributed as with described cylindrical groove be the center, the density of arranging progressively reduces, and reaches minimum in the centre position of two cylindrical grooves density.
4, down straight aphototropism mode set as claimed in claim 1 is characterized in that, the angle that the bottom land circular conical surface of described cylindrical groove and the bottom surface of described guiding device form increases with the arrange increase of spacing of described led light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100346589A CN101256307A (en) | 2008-03-14 | 2008-03-14 | Directly-down backlight module unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100346589A CN101256307A (en) | 2008-03-14 | 2008-03-14 | Directly-down backlight module unit |
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| CN101256307A true CN101256307A (en) | 2008-09-03 |
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| CNA2008100346589A Pending CN101256307A (en) | 2008-03-14 | 2008-03-14 | Directly-down backlight module unit |
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| WO2011000219A1 (en) * | 2009-07-01 | 2011-01-06 | 绎立锐光科技开发(深圳)有限公司 | Backlight source and thinning method for the same and liquid crystal device with the same |
| CN101988663A (en) * | 2010-10-15 | 2011-03-23 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN102177391A (en) * | 2008-10-09 | 2011-09-07 | 夏普株式会社 | Illuminating device, display device and television receiver |
| CN102224372A (en) * | 2008-11-25 | 2011-10-19 | 夏普株式会社 | Illumination device, display device, and television reception device |
| CN102245961A (en) * | 2008-12-25 | 2011-11-16 | 夏普株式会社 | Illumination device, display device, and television reception device |
| CN102661539A (en) * | 2009-07-01 | 2012-09-12 | 深圳市绎立锐光科技开发有限公司 | Backlight source and liquid crystal display device with same |
| WO2012155365A1 (en) * | 2011-05-16 | 2012-11-22 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN102889507A (en) * | 2011-07-22 | 2013-01-23 | Lg伊诺特有限公司 | Backlight unit and display apparatus using the same |
| CN103017038A (en) * | 2012-12-13 | 2013-04-03 | 京东方科技集团股份有限公司 | Direct type backlight source and display device |
| CN103900027A (en) * | 2012-12-28 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Optical module |
| TWI475296B (en) * | 2010-11-22 | 2015-03-01 | Lg Innotek Co Ltd | Method for manufacturing backlight unit |
| CN105319773A (en) * | 2015-11-03 | 2016-02-10 | 青岛海信电器股份有限公司 | Backlight module and liquid crystal display device |
| CN105556352A (en) * | 2013-09-17 | 2016-05-04 | 堺显示器制品株式会社 | Illumination device and display device |
| CN105579768A (en) * | 2013-09-25 | 2016-05-11 | 堺显示器制品株式会社 | Illumination device and display device |
| CN105757613A (en) * | 2015-01-06 | 2016-07-13 | 瑞仪光电股份有限公司 | Light guide element and light source device using the light guide element |
| WO2016145670A1 (en) * | 2015-03-17 | 2016-09-22 | 深圳市华星光电技术有限公司 | Smart watch and liquid crystal screen |
| CN106886106A (en) * | 2017-02-16 | 2017-06-23 | 广州毅昌科技股份有限公司 | A kind of ultrathin backlight module |
| CN107092051A (en) * | 2017-06-20 | 2017-08-25 | 合肥惠科金扬科技有限公司 | Light guide plate, backlight module and display device |
| CN107178712A (en) * | 2016-03-11 | 2017-09-19 | 三星电子株式会社 | Light source module and the lighting device including it |
| CN107357086A (en) * | 2017-08-15 | 2017-11-17 | 环球智达科技（北京）有限公司 | Down straight aphototropism mode set |
| CN107489899A (en) * | 2017-07-19 | 2017-12-19 | 汤江华 | A kind of manufacture method of annular lamp ring and annular lamp ring |
| CN107564422A (en) * | 2016-06-30 | 2018-01-09 | 群创光电股份有限公司 | Light emitting display device |
| CN107908041A (en) * | 2017-11-24 | 2018-04-13 | 珠海晨新科技有限公司 | A kind of screen bottom light source module comprehensively and comprehensively screen |
| CN110824776A (en) * | 2019-11-27 | 2020-02-21 | 惠州市隆利科技发展有限公司 | Direct type mini LED backlight module |
| US10866456B2 (en) | 2017-02-17 | 2020-12-15 | Nichia Corporation | Method of manufacturing light emitting module and light emitting module |
| CN114035379A (en) * | 2021-11-30 | 2022-02-11 | 康佳集团股份有限公司 | Backlight module, display and television |
| CN115079320A (en) * | 2022-07-25 | 2022-09-20 | 青岛国骐光电科技有限公司 | Diffusion plate, application and preparation method thereof, backlight module and display module |
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2008
- 2008-03-14 CN CNA2008100346589A patent/CN101256307A/en active Pending
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| CN102177391B (en) * | 2008-10-09 | 2013-08-14 | 夏普株式会社 | Illuminating device, display device and television receiver |
| CN102177391A (en) * | 2008-10-09 | 2011-09-07 | 夏普株式会社 | Illuminating device, display device and television receiver |
| CN102224372B (en) * | 2008-11-25 | 2013-07-24 | 夏普株式会社 | Illumination device, display device, and television reception device |
| CN102224372A (en) * | 2008-11-25 | 2011-10-19 | 夏普株式会社 | Illumination device, display device, and television reception device |
| CN102245961A (en) * | 2008-12-25 | 2011-11-16 | 夏普株式会社 | Illumination device, display device, and television reception device |
| US8810749B2 (en) * | 2009-07-01 | 2014-08-19 | Appotronics Ltd. | Backlight sources having reduced thickness and liquid crystal display device using the same |
| CN102661539A (en) * | 2009-07-01 | 2012-09-12 | 深圳市绎立锐光科技开发有限公司 | Backlight source and liquid crystal display device with same |
| US20120242934A1 (en) * | 2009-07-01 | 2012-09-27 | Appotronics Limited | Backlight sources having reduced thickness and liquid crystal display device using the same |
| WO2011000219A1 (en) * | 2009-07-01 | 2011-01-06 | 绎立锐光科技开发(深圳)有限公司 | Backlight source and thinning method for the same and liquid crystal device with the same |
| CN101988663A (en) * | 2010-10-15 | 2011-03-23 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| WO2012048488A1 (en) * | 2010-10-15 | 2012-04-19 | 深圳市华星光电技术有限公司 | Backlight module and display apparatus |
| TWI475296B (en) * | 2010-11-22 | 2015-03-01 | Lg Innotek Co Ltd | Method for manufacturing backlight unit |
| WO2012155365A1 (en) * | 2011-05-16 | 2012-11-22 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN102889507A (en) * | 2011-07-22 | 2013-01-23 | Lg伊诺特有限公司 | Backlight unit and display apparatus using the same |
| CN102889507B (en) * | 2011-07-22 | 2016-05-11 | Lg伊诺特有限公司 | Back light unit and use its display unit |
| CN103017038A (en) * | 2012-12-13 | 2013-04-03 | 京东方科技集团股份有限公司 | Direct type backlight source and display device |
| US9086515B2 (en) | 2012-12-13 | 2015-07-21 | Boe Technology Group Co., Ltd. | Direct type backlight and display device |
| CN103900027A (en) * | 2012-12-28 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Optical module |
| CN105556352A (en) * | 2013-09-17 | 2016-05-04 | 堺显示器制品株式会社 | Illumination device and display device |
| CN105579768A (en) * | 2013-09-25 | 2016-05-11 | 堺显示器制品株式会社 | Illumination device and display device |
| CN105757613A (en) * | 2015-01-06 | 2016-07-13 | 瑞仪光电股份有限公司 | Light guide element and light source device using the light guide element |
| CN105757613B (en) * | 2015-01-06 | 2018-11-09 | 瑞仪光电股份有限公司 | The light supply apparatus of light-guide device and the application light-guide device |
| WO2016145670A1 (en) * | 2015-03-17 | 2016-09-22 | 深圳市华星光电技术有限公司 | Smart watch and liquid crystal screen |
| CN105319773A (en) * | 2015-11-03 | 2016-02-10 | 青岛海信电器股份有限公司 | Backlight module and liquid crystal display device |
| CN107178712A (en) * | 2016-03-11 | 2017-09-19 | 三星电子株式会社 | Light source module and the lighting device including it |
| CN107564422B (en) * | 2016-06-30 | 2020-02-07 | 群创光电股份有限公司 | Light emitting diode display device |
| CN107564422A (en) * | 2016-06-30 | 2018-01-09 | 群创光电股份有限公司 | Light emitting display device |
| CN106886106A (en) * | 2017-02-16 | 2017-06-23 | 广州毅昌科技股份有限公司 | A kind of ultrathin backlight module |
| EP3364458B1 (en) * | 2017-02-17 | 2023-03-22 | Nichia Corporation | Method of manufacturing light emitting module and light emitting module |
| US11269215B2 (en) | 2017-02-17 | 2022-03-08 | Nichia Corporation | Method of manufacturing light emitting module and light emitting module |
| US10866456B2 (en) | 2017-02-17 | 2020-12-15 | Nichia Corporation | Method of manufacturing light emitting module and light emitting module |
| CN107092051A (en) * | 2017-06-20 | 2017-08-25 | 合肥惠科金扬科技有限公司 | Light guide plate, backlight module and display device |
| CN107489899B (en) * | 2017-07-19 | 2020-06-23 | 汤江华 | Manufacturing method of annular lamp ring and annular lamp ring |
| CN107489899A (en) * | 2017-07-19 | 2017-12-19 | 汤江华 | A kind of manufacture method of annular lamp ring and annular lamp ring |
| CN107357086A (en) * | 2017-08-15 | 2017-11-17 | 环球智达科技（北京）有限公司 | Down straight aphototropism mode set |
| CN107908041A (en) * | 2017-11-24 | 2018-04-13 | 珠海晨新科技有限公司 | A kind of screen bottom light source module comprehensively and comprehensively screen |
| CN110824776A (en) * | 2019-11-27 | 2020-02-21 | 惠州市隆利科技发展有限公司 | Direct type mini LED backlight module |
| CN114035379A (en) * | 2021-11-30 | 2022-02-11 | 康佳集团股份有限公司 | Backlight module, display and television |
| CN115079320A (en) * | 2022-07-25 | 2022-09-20 | 青岛国骐光电科技有限公司 | Diffusion plate, application and preparation method thereof, backlight module and display module |
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