CN102182968A - Novel LED (light-emitted diode) backlight module - Google Patents

Novel LED (light-emitted diode) backlight module Download PDF

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Publication number
CN102182968A
CN102182968A CN2011101242697A CN201110124269A CN102182968A CN 102182968 A CN102182968 A CN 102182968A CN 2011101242697 A CN2011101242697 A CN 2011101242697A CN 201110124269 A CN201110124269 A CN 201110124269A CN 102182968 A CN102182968 A CN 102182968A
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light
plate
led
source module
backlight source
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CN2011101242697A
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林韡
杜振宇
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TPV Display Technology Xiamen Co Ltd
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TPV Display Technology Xiamen Co Ltd
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Priority to CN2011101242697A priority Critical patent/CN102182968A/en
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Abstract

The invention relates to a novel LED (light-emitted diode) backlight module which comprises an LED line light source component, and is characterized in that the LED line light source component comprises a U-shaped slot reflector plate, convex points for reflecting rays are distributed on the surface of an inner cavity of the U-shaped slot reflector plate, one end of the U-shaped slot reflector plates is sealed, the other end of the U-shaped slot reflector plates is connected with a light frame for installing an LED lamp, materials with the luminous reflectance of 90% is arranged on the surface of the inner cavity of the U-shaped slot reflector plate, a light guide strip is arranged at a slot opening of the U-shaped slot reflector plate, and the light transmittance of material of the light guide strip is 85%. With the novel LED backlight module, the light source form is changed, the light mixing effect is improved, the number of LEDs can be reduced, the luminous efficiency of a backlight can be improved, the whole energy consumption is reduced, a uniform plane light source is obtained, and the using quantity of light guide materials are reduced since a solid light guide plate is replaced by the light guide strip and a light mixing cavity structure.

Description

The New LED backlight source module
Technical field
The present invention relates to a kind of New LED backlight source module, be applied to non-active illuminating Display Technique, as adopting LCD, LCD TV or other liquid crystal flat-panel display devices of TFT-LCD Display Technique.
Background technology
Existing flat-panel screens adopts the TFT-LCD Display Technique more, and TFT-LCD is the luminous demonstration of inactive mode, must provide uniform system brightness to arrange in pairs or groups with it by stable backlight source module (Backlight Module), could obtain outstanding display effect.Backlight source module by luminescence component arrange, the collocation of optics portion material and internal mechanism design, the output intensity even planar light source.Mainly be divided into two kinds of direct-light-type backlight module and side type modules backlight according to the arrangement mode of luminescence component.
At present, the luminescence component of backlight source module mainly comprises cathode fluorescent tube (CCFL) and light emitting diode (LED).CCFL exists energy consumption height, optical stability difference and does not meet problem such as environmental requirement, is restricted in opto-electronics is used; LED has become main flow backlight mode, but because the characteristic of spot light makes it have the problem of mixed light difficulty in use in the planar backlight source.In existing side type LED-backlit source module was used, the LED spacing on the LED Lightbar was big, mixed light weak effect then, and the LED spacing is little, and then heat radiation is difficult, influences LED illumination effect and service life.There are problems such as technology and cost in large scale, slimming in LGP in using.In existing direct LED backlight module is used, LED Array needs a large amount of low-power LED to arrange, and just can obtain certain mixed light effect, but the light source whole lighting efficiency is lower, and light mixing distance is bigger, can't adapt to backlight source module slimming designer trends.
Summary of the invention
The object of the present invention is to provide a kind of New LED backlight source module, help realizing that single LEDs is converted into line source, reduces the usage quantity of LED in the backlight source module and is reduced the optical material use amount by spot light.
The invention is characterized in: a kind of New LED backlight source module, comprise LED line source assembly, it is characterized in that: described LED line source assembly comprises that surface of internal cavity is laid with the U-lag reflector plate in order to the salient point of reflection ray, the one end sealing of described U-lag reflector plate, the other end and surface of internal cavity are laid light reflectivity〉90% material and be connected in order to the lamp door of laying the LED lamp, the notch of described U-lag reflector plate is provided with a light transmittance〉the leaded light bar of 85% material.
Advantage of the present invention: the present invention has changed form of light source, promoted the mixed light effect, can also reduce the LED usage quantity, improve the backlight luminous efficiency, reduce whole energy consumption, obtain the uniform planar light source, and adopt leaded light bar and mixed light cavity configuration to replace the entity LGP, reduced the use amount of optical material.
Description of drawings
Fig. 1 is an embodiment of the invention LED line source modular construction exploded perspective view.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is a side type example structure schematic diagram of the present invention.
Fig. 4 is a straight-down negative example structure schematic diagram of the present invention.
The specific embodiment
With reference to figure 1, Fig. 2, Fig. 3 and Fig. 4, a kind of New LED backlight source module, comprise LED line source assembly 1, described LED line source assembly 1 comprises that surface of internal cavity is laid with the U-lag reflector plate 1-1 in order to the salient point 1-2 of reflection ray, the end sealing of described U-lag reflector plate 1-1, the other end and surface of internal cavity are laid light reflectivity〉90% material and be connected in order to the lamp door 1-4 that lays LED lamp 1-3, the notch of described U-lag reflector plate 1-1 is provided with a light transmittance〉the leaded light bar 1-5 of 85% material.The lamp door surface of internal cavity can adopt aluminum, and the leaded light bar can adopt polymethyl methacrylate or makrolon material, and the U-lag reflector plate can adopt silver-colored reflector plate or white reflection sheet.
Above-mentioned New LED backlight source module is the side type backlight source module, comprise transmittance plate 2 and following reflecting plate 3, described going up between transmittance plate 2 and the following reflecting plate 3 has the mixed light chamber 4 of mixing in order to light, described mixed light chamber 4 all sides are provided with in order to lay the light trough 5 of LED line source assembly 1, and the notch of described light trough 5 points to mixed light chamber 4
Adopt reflectivity on the above-mentioned down reflecting plate 3〉90% material.
The above-mentioned transmittance plate 2 of going up adopts light transmittance to be in 40 ~ 90% material.
Above-mentioned New LED backlight source module is the direct-light-type backlight module, comprises diffuser plate 6, and described diffuser plate 6 belows are provided with LED line source assembly 1, and the notch of the U-lag reflector plate of described LED line source assembly 1 points to diffuser plate.
Specific implementation process: in the LED line source assembly, the LED lamp is a light-emitting component, and the dispersion shape spot light is provided, and adopts high-effect LED(〉 60Lm/W); Lamp door is in order to connect leaded light bar and LED lamp, and its material is the high metal of surface light reflectivity, as aluminium; The U-lag reflector plate that has salient point is because its good reflection characteristic, and in order to light conduction and reflection, it is silver-colored reflector plate, white reflection sheet or other the high optical reflection material of commanding troops that its material can be material; The salient point processing technology is ink printing, punch forming or other; The leaded light bar: light conduction and output, its material is the high molecular polymer of high transmission rate, as the PMMA(polymethyl methacrylate), also can be the high molecular polymer of other high transmission rate, as PC (Merlon).
The incidence surface and the exiting surface of leaded light bar are regular planar, and the incidence surface of leaded light bar is identical with the light-emitting area specification of LED, connect and fix by lamp door; The process that the LED scattering light source conducts in leaded light bar inside, reflects and finally exported by exiting surface.
In LED line source assembly, both can adopt the pattern that cooperates with the leaded light bar of U-lag reflector plate of band salient point, the pattern that also can adopt the U-lag reflector plate to cooperate with the leaded light bar of being with the site.
In order to control line light source rising angle, rising angle is<180 at the light trough in the side type backlight source module
Figure 909904DEST_PATH_IMAGE001
Arbitrarily angled; Following reflecting plate mainly is that opposite side line source light reflects, and transmittance plate constitutes the mixed light chamber in the cooperation, carries out the optics conduction; Last transmittance plate is incident light to be carried out polarisation select to penetrate and reflect.Last transmittance plate is directly fitted in the lower surface of display device face glass, realize the integrated design of backlight source module-face glass, both reduced mechanism's optical loss, promoted display effect, can reach complete machine slimming design again.The LED line source is applied to both improve luminous efficiency in traditional light conducting plate structure side type backlight source module, reduces whole energy consumption, solved mixed light problem between the LED spot light and the heat dissipation problem of LED again.The arrangement mode of the side type backlight source module under this form can be monolaterally arrange, bilaterally arrange, arrange in four limits or the side arrangement mode of arbitrary form.
At in the direct-light-type backlight module LED line source directly being placed under the diffuser plate, and, can effectively dwindle light mixing distance, thereby be convenient to the thinning display device because the mixed light of LED line source own is effective; And the segmentation combining form of New LED line source can realize that the local dimming of direct-light-type backlight module uses, and can improve the color contrast of display device, improves display effect, and cuts down the consumption of energy to a certain extent.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.

Claims (5)

1. New LED backlight source module, comprise LED line source assembly, it is characterized in that: described LED line source assembly comprises that surface of internal cavity is laid with the U-lag reflector plate in order to the salient point of reflection ray, the one end sealing of described U-lag reflector plate, the other end and surface of internal cavity are laid light reflectivity〉90% material and be connected in order to the lamp door of laying the LED lamp, the notch of described U-lag reflector plate is provided with a light transmittance〉the leaded light bar of 85% material.
2. New LED backlight source module according to claim 1, it is characterized in that: described New LED backlight source module is the side type backlight source module, comprise transmittance plate and following reflecting plate, described going up between transmittance plate and the following reflecting plate has the mixed light chamber of mixing in order to light, described mixed light chamber week side is provided with in order to lay the light trough of LED line source assembly, and the notch of described light trough points to the mixed light chamber.
3. New LED backlight source module according to claim 1 and 2 is characterized in that: adopt reflectivity on the described down reflecting plate〉90% material.
4. New LED backlight source module according to claim 1 and 2 is characterized in that: the described transmittance plate of going up adopts light transmittance to be in 40 ~ 90% material.
5. New LED backlight source module according to claim 1, it is characterized in that: described New LED backlight source module is the direct-light-type backlight module, comprise diffuser plate, described diffuser plate below is provided with LED line source assembly, and the notch of the U-lag reflector plate of described LED line source assembly points to diffuser plate.
CN2011101242697A 2011-05-16 2011-05-16 Novel LED (light-emitted diode) backlight module Pending CN102182968A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104501094A (en) * 2014-12-02 2015-04-08 深圳市华星光电技术有限公司 Light-guiding plate, backlight module and display device
CN107435818A (en) * 2016-05-26 2017-12-05 技嘉科技股份有限公司 Luminous Ring and radiator fan
CN108036222A (en) * 2017-12-16 2018-05-15 广州市莱帝亚照明股份有限公司 A kind of optical fiber light-guiding type water proof lamp band
WO2019140923A1 (en) * 2018-01-17 2019-07-25 京东方科技集团股份有限公司 Optical cavity, optical system and display device

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CN1696791A (en) * 2005-06-22 2005-11-16 友达光电股份有限公司 Straight light type structure of backlight unit
CN1847956A (en) * 2005-04-04 2006-10-18 Nec液晶技术株式会社 Illumination system and display device using the same
CN1928667A (en) * 2005-09-09 2007-03-14 三星电子株式会社 Backlight unit and display device having the same
CN101441354A (en) * 2007-11-20 2009-05-27 上海广电Nec液晶显示器有限公司 LED line light source module group and backlight source device
CN101467077A (en) * 2006-06-21 2009-06-24 出光兴产株式会社 Multilayer sheet for light reflection, reflector using same, lighting device, and liquid crystal display device
CN101556000A (en) * 2008-04-11 2009-10-14 上海广电Nec液晶显示器有限公司 LED line light source and backlight source device
CN101706044A (en) * 2008-12-05 2010-05-12 深超光电(深圳)有限公司 led backlight module
CN201583767U (en) * 2010-01-14 2010-09-15 深圳帝光电子有限公司 Direct type ultra-thin liquid crystal display device
CN201652035U (en) * 2010-04-08 2010-11-24 冠捷投资有限公司 Direct-type backlight module and side-type backlight module

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1847956A (en) * 2005-04-04 2006-10-18 Nec液晶技术株式会社 Illumination system and display device using the same
CN1696791A (en) * 2005-06-22 2005-11-16 友达光电股份有限公司 Straight light type structure of backlight unit
CN1928667A (en) * 2005-09-09 2007-03-14 三星电子株式会社 Backlight unit and display device having the same
CN101467077A (en) * 2006-06-21 2009-06-24 出光兴产株式会社 Multilayer sheet for light reflection, reflector using same, lighting device, and liquid crystal display device
CN101441354A (en) * 2007-11-20 2009-05-27 上海广电Nec液晶显示器有限公司 LED line light source module group and backlight source device
CN101556000A (en) * 2008-04-11 2009-10-14 上海广电Nec液晶显示器有限公司 LED line light source and backlight source device
CN101706044A (en) * 2008-12-05 2010-05-12 深超光电(深圳)有限公司 led backlight module
CN201583767U (en) * 2010-01-14 2010-09-15 深圳帝光电子有限公司 Direct type ultra-thin liquid crystal display device
CN201652035U (en) * 2010-04-08 2010-11-24 冠捷投资有限公司 Direct-type backlight module and side-type backlight module

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104501094A (en) * 2014-12-02 2015-04-08 深圳市华星光电技术有限公司 Light-guiding plate, backlight module and display device
CN104501094B (en) * 2014-12-02 2017-10-13 深圳市华星光电技术有限公司 Light guide plate, backlight module and display device
CN107435818A (en) * 2016-05-26 2017-12-05 技嘉科技股份有限公司 Luminous Ring and radiator fan
CN108036222A (en) * 2017-12-16 2018-05-15 广州市莱帝亚照明股份有限公司 A kind of optical fiber light-guiding type water proof lamp band
WO2019140923A1 (en) * 2018-01-17 2019-07-25 京东方科技集团股份有限公司 Optical cavity, optical system and display device
US10795072B2 (en) 2018-01-17 2020-10-06 Beijing Boe Optoelectronics Technology Co., Ltd Optical chamber, optical system and display device

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Application publication date: 20110914