CN101956938A - Backlight module and liquid crystal display - Google Patents

Backlight module and liquid crystal display Download PDF

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Publication number
CN101956938A
CN101956938A CN 201010295800 CN201010295800A CN101956938A CN 101956938 A CN101956938 A CN 101956938A CN 201010295800 CN201010295800 CN 201010295800 CN 201010295800 A CN201010295800 A CN 201010295800A CN 101956938 A CN101956938 A CN 101956938A
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CN
China
Prior art keywords
hole
circuit board
lgp
backboard
module backlight
Prior art date
Application number
CN 201010295800
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Chinese (zh)
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CN101956938B (en
Inventor
陈新春
郑仲豪
余康
Original Assignee
友达光电(苏州)有限公司
友达光电股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 友达光电(苏州)有限公司, 友达光电股份有限公司 filed Critical 友达光电(苏州)有限公司
Priority to CN2010102958002A priority Critical patent/CN101956938B/en
Publication of CN101956938A publication Critical patent/CN101956938A/en
Application granted granted Critical
Publication of CN101956938B publication Critical patent/CN101956938B/en

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Abstract

The invention discloses a backlight module and a liquid crystal display. A frame, a circuit board and a back board of the backlight module are fixed through a first fixing member, meanwhile, a light guide board, the circuit board and the back board are fixed through a second fixing member, a light-emitting diode is arranged between the light-incident surface of the light guide board and the frame so that the circuit board of a light source module is restrained in the horizontal direction and the vertical direction, thereby solving the problems of easy bounce and deflection of the light-emitting diode and improving the phenomenon of nonuniform projection or light leakage of the light-emitting diode. Furthermore, the circuit board of the light source module is fixed and located without using an adhesive tape, thereby saving material cost, having compact structure and being conveniently assembled.

Description

Module backlight and LCD
Technical field
The present invention relates to a kind of backlight liquid crystal display module, particularly is the module backlight of light source with the light emitting diode, and the LCD of using this module backlight.
Background technology
See also Fig. 1, Fig. 1 is the schematic diagram of prior art module backlight.In the prior art, module 1 backlight provides backlight for the display panels of LCD, module 1 backlight includes light source module, LGP 30, glue frame 40 and backboard 10, and the light source module comprises circuit board 20 and electrically is arranged at light emitting diode (LED) 50 on the circuit board 20.When assembling module 1 backlight, light emitting diode 50 is snapped in the standing groove that forms between the glue frame 40 and LGP 30 in the module 1 backlight.Wherein, circuit board 20 can also can be lamp bar FPC (being Light bar FPC) for being connected in the flexible printed wiring board (abbreviating main FPC as at this) on the display panels.When circuit board 20 is main FPC, will be when assembling display panels and module 1 backlight circuit board 20 reflexeds, and then LED 50 snapped in the standing groove.But because the circuit board 20 of bending has resilience, or because when assembling LED 50 itself produces crooked or deflection, thereby the phenomenon of projection inequality or light leak produced.When LED 50 electrically is arranged on the Light bar FPC, between LGP 30 and glue frame 40, standing groove be set equally, also to prevent that LED 50 from crooked and deflection taking place and the problem that causes throwing inequality or light leak.For addressing the above problem, common way is to paste an adhesive tape on the circuit board 20 of LED 50 both sides respectively, article one, adhesive tape 70 ' is in order to sticking on the LGP 30, and another adhesive tape 70 is in order to sticking on the framework 40, thereby reaches the fixedly purpose of light emitting diode.But this module backlight has been lifted up easily when the adhesive tape adhibit quality reduces or has been broken away from, thereby influences the optical effect of light emitting diode; In addition, when adhesive tape is pasted LGP, also may together cling together with reflector plate (not shown, reflector plate is arranged between LGP and the backboard), can produce the problem that the LGP ring is surveyed ripple this moment; In addition, use adhesive tape, may influence the utilization ratio of light in addition in the place ahead of LED exiting surface; And, using adhesive tape in a large number, production cost increases.
Summary of the invention
Therefore, one of purpose of the present invention be to provide a kind of convenience, need not Continuous pressing device for stereo-pattern, reliable and the fixedly module backlight and the LCD of light emitting diode really.
For reaching above-mentioned purpose, the invention provides a kind of module backlight, this module backlight comprises LGP, framework, light source module and backboard.LGP has incidence surface, and has at least one first through hole on this LGP; Chassis configuration has at least one second through hole in this incidence surface one side of this LGP on this framework; The light source module comprises circuit board and electrically is arranged at a plurality of light emitting diodes on this circuit board, those light emitting diodes between this incidence surface of this framework and this LGP, and have on this circuit board at least one third through-hole corresponding with this first through hole and with at least one fourth hole corresponding with this second through hole; Backboard has base plate, this circuit board to small part is positioned on this base plate, and this LGP and this framework are positioned on this circuit board, wherein, third through-hole and first through hole of this LGP of this backboard by first fixture and this circuit board combine fixingly, and second through hole that this backboard passes through the fourth hole of second fixture and this circuit board and this framework combines to be fixed.
Preferably, this first fixture and/or this second fixture are grab, and this grab is arranged on this backboard.
Preferably, this grab and this backboard are one-body molded.
Preferably, this first fixture comprises first screw and fifth hole, and this fifth hole is positioned on this backboard, and this first screw passes this fifth hole, this third through-hole and this first through hole and fixes this backboard, this circuit board and this LGP.
Preferably, this second fixture comprises second screw and the 6th through hole, and the 6th through hole is positioned on this backboard, and this second screw passes the 6th through hole, this fourth hole and this second through hole and fixes this backboard, this circuit board and this framework.
Preferably, this incidence surface one side of this LGP or this framework have a plurality of grooves towards a side of this incidence surface, and those grooves are in order to ccontaining those light emitting diodes.
Preferably, this circuit board is the flexible printed wiring board that is connected on the display panels.
Preferably, this module backlight also comprises reflector plate, and this reflector plate is disposed between this LGP and this base plate.
Preferably, this module backlight also comprises optical diaphragm group, and this optical diaphragm group is disposed at this LGP side of this base plate relatively.
The present invention also provides a kind of LCD, this LCD comprises aforesaid module backlight and display panels, this display panels is disposed at the side of this module backlight away from this base plate, and this module backlight provides backlight for this display panels.
Compared with prior art, module backlight provided by the invention and LCD, its LGP, circuit board and backboard by first fixture for example grab be fixed mutually, simultaneously framework, circuit board and backboard by second fixture for example grab also be fixed mutually.So, the circuit board of light source module both can be fixed in the horizontal direction, can be fixed by in the vertical direction again, and LED jumps out easily, crooked problem produces thereby solve, and then improves the phenomenon of its projection inequality or light leak; And the fixing of circuit board can not re-use adhesive tape, the saving material cost; And former assembling uses adhesive tape need remove the operation of tape surface diaphragm, and this light source module assembling only needs successively that suit engages then, and compact conformation is easy to assembly.
Can be about the advantages and spirit of the present invention by following detailed Description Of The Invention and appended graphic being further understood.
Description of drawings
Fig. 1 is the schematic diagram of prior art module backlight;
Fig. 2 is the schematic top plan view of the present invention's module first preferred embodiment backlight;
Fig. 3 is the generalized section along A-A line among Fig. 2;
Fig. 4 is the generalized section of the present invention's module second preferred embodiment backlight;
Fig. 5 is the generalized section of LCD one preferred embodiment of the present invention.
The specific embodiment
See also Fig. 2 and Fig. 3, Fig. 2 is the schematic top plan view of the present invention's module first preferred embodiment backlight, and Fig. 3 is the generalized section of A-A line among Fig. 2.The invention provides a kind of module backlight 100, comprise backboard 11, framework 12, LGP 13 and light source module, the light source module comprises circuit board 14 and a plurality of light emitting diode 15.LGP 13 has incidence surface 32, and wherein in the present embodiment, a side of the incidence surface 32 of LGP 13 has a plurality of grooves 90, groove 90 is in order to ccontaining those light emitting diodes 15, certainly, in another embodiment, groove 90 also can be positioned at the side of framework 12 towards incidence surface 32.In addition, has at least one first through hole 31 on the LGP 13.Framework 12 is disposed at incidence surface 32 1 sides of LGP 13, has at least one second through hole 41 on the framework 12.A plurality of light emitting diodes 15 electrically are arranged on the circuit board 14, and those light emitting diodes 15 are between the incidence surface 32 of framework 12 and LGP 13, and those light emitting diodes 15 are placed in the groove 90; In addition, have at least one third through-hole 21a corresponding and at least one fourth hole 21b corresponding on the circuit board 14 with second through hole 41 with first through hole 31.Wherein, in the present embodiment, circuit board 14 is for example for being connected to the flexible printed wiring board on the display panels.Backboard 11 has base plate 111, and circuit board 14 to small part is positioned on this base plate 111, and LGP 13 is positioned on the circuit board 14 with framework 12.Wherein, the backboard 11 third through-hole 21a and first through hole 31 of LGP 13 by first fixture and circuit board 14 combine fixingly, and backboard 11 second through hole 41 that passes through the fourth hole 21b of second fixture and circuit board 14 and framework 12 combines and fixes.Wherein in the present embodiment, the first fixture 11a and/or the second fixture 11b for example are grab, and grab 11a, 11b are arranged on the backboard 11.And preferably, first fixture is that the grab 11a and second fixture are that grab 11b and backboard 11 are one-body molded, for example from the base plate 111 direct punch formings of backboard 11.
Concrete, when for example assembling, with backboard 11, circuit board 14, framework 12 and LGP 13, carry out suit successively, using first fixture is that grab 11a engages with the third through-hole 21a and first through hole 31, using second fixture is that grab 11b engages with the fourth hole 21b and second through hole 41, just can reach the purpose of easy, reliable fixed light source module.
See also Fig. 4, Fig. 4 is the generalized section of the present invention's module second preferred embodiment backlight.What the module backlight 100 in the module backlight 101 of present embodiment and first embodiment was different is: in the present embodiment, first fixture and second fixture are not to be grab, but, first fixture comprises the fifth hole 12a and first screw 60, second fixture comprises the 6th through hole 12b and second screw 60 ', wherein, fifth hole 12a and the 6th through hole 12b all are arranged on the base plate 111 of backboard 11.During assembling, first screw 60 passes fifth hole 12a, third through-hole 21a and first through hole, 31 stationary backplate 11, circuit board 14 and LGP 13 successively; Second screw 60 ' passes the 6th through hole 12b, fourth hole 21b and second through hole, 41 stationary backplate 11, circuit board 14 and framework 12 successively, just can reach the purpose of easy, reliable fixed light source module.
See also Fig. 5, Figure 5 shows that the generalized section of LCD one preferred embodiment of the present invention, the present invention also provides a kind of LCD 103, LCD 103 is except that comprising aforesaid module backlight 100 (or 101), also comprise display panels 110, display panels 110 is disposed at the side of this module 1 backlight away from base plate 111, and module backlight 1 provides backlight for display panels 110.In addition, module 100 backlight also includes reflector plate 80 and optical diaphragm group 112, and reflector plate 80 is disposed between the base plate 111 of LGP 13 and backboard 11; Optical diaphragm group 112 is disposed at a side of the base plate 111 of LGP 13 relative backboards 11.
By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come protection scope of the present invention is limited with above-mentioned disclosed preferred embodiment.Therefore, the protection domain of the claim that the present invention applied for should be done the broadest explanation according to above-mentioned explanation, contains the arrangement of all possible change and tool equality to cause it.

Claims (10)

1. module backlight is characterized in that this module backlight comprises:
LGP has incidence surface, and has at least one first through hole on this LGP;
Framework is disposed at this incidence surface one side of this LGP, has at least one second through hole on this framework;
The light source module, comprise circuit board and electrically be arranged at a plurality of light emitting diodes on this circuit board, those light emitting diodes between this incidence surface of this framework and this LGP, and have on this circuit board at least one third through-hole corresponding with this first through hole and with at least one fourth hole corresponding with this second through hole; And
Backboard, has base plate, this circuit board to small part is positioned on this base plate, and this LGP and this framework are positioned on this circuit board, wherein, third through-hole and first through hole of this LGP of this backboard by first fixture and this circuit board combine fixingly, and second through hole that this backboard passes through the fourth hole of second fixture and this circuit board and this framework combines to be fixed.
2. module backlight as claimed in claim 1 is characterized in that this first fixture and/or this second fixture are grab, and this grab is arranged on this backboard.
3. module backlight as claimed in claim 2 is characterized in that this grab and this backboard are one-body molded.
4. module backlight as claimed in claim 1 is characterized in that this first fixture comprises
First screw; And
Fifth hole, this fifth hole are positioned on this backboard, and this first screw passes this fifth hole, this third through-hole and this first through hole and fixes this backboard, this circuit board and this LGP.
5. module backlight as claimed in claim 1 is characterized in that this second fixture comprises
Second screw; And
The 6th through hole, the 6th through hole are positioned on this backboard, and this second screw passes the 6th through hole, this fourth hole and this second through hole and fixes this backboard, this circuit board and this framework.
6. module backlight as claimed in claim 1 is characterized in that this incidence surface one side of this LGP or this framework have a plurality of grooves towards a side of this incidence surface, and those grooves are in order to ccontaining those light emitting diodes.
7. module backlight as claimed in claim 1 is characterized in that this circuit board is the flexible printed wiring board that is connected on the display panels.
8. module backlight as claimed in claim 1 is characterized in that this module backlight also comprises reflector plate, and this reflector plate is disposed between this LGP and this base plate.
9. module backlight as claimed in claim 1 is characterized in that this module backlight also comprises optical diaphragm group, and this optical diaphragm group is disposed at this LGP side of this base plate relatively.
10. a LCD is characterized in that this LCD comprises
As any described module backlight among the claim 1-9; And
Display panels, this display panels are disposed at the side of this module backlight away from this base plate, and this module backlight provides backlight for this display panels.
CN2010102958002A 2010-09-21 2010-09-21 Backlight module and liquid crystal display CN101956938B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102958002A CN101956938B (en) 2010-09-21 2010-09-21 Backlight module and liquid crystal display

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CN101956938A true CN101956938A (en) 2011-01-26
CN101956938B CN101956938B (en) 2012-06-27

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102376226A (en) * 2011-11-18 2012-03-14 深圳市华星光电技术有限公司 Flat-panel display device, stereoscopic display device and plasma display device
CN102392994A (en) * 2011-11-18 2012-03-28 深圳市华星光电技术有限公司 Back frame of panel display device, backlight system and panel liquid crystal display device
CN102392983A (en) * 2011-11-18 2012-03-28 深圳市华星光电技术有限公司 Back frame of panel display device, manufacturing method of back frame and backlight system
CN102392993A (en) * 2011-11-18 2012-03-28 深圳市华星光电技术有限公司 Back frame and backlight system
CN102588836A (en) * 2012-02-13 2012-07-18 深圳市华星光电技术有限公司 Backlight module and liquid crystal display
CN102661556A (en) * 2012-05-30 2012-09-12 深圳市华星光电技术有限公司 Backlight module
CN102679235A (en) * 2011-03-11 2012-09-19 常州天禄光电科技有限公司 Backlight module
CN102798033A (en) * 2011-05-25 2012-11-28 奇菱科技股份有限公司 Backlight module
WO2013078744A1 (en) * 2011-12-02 2013-06-06 深圳市华星光电技术有限公司 Positioning hook of optimal film of backlight module
US8672499B2 (en) 2011-11-18 2014-03-18 Shenzhen China Star Optoelectronics Technology Co., Ltd. Flat panel display device, stereoscopic display device, plasma display device
WO2014043941A1 (en) * 2012-09-24 2014-03-27 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
CN103712178A (en) * 2014-01-23 2014-04-09 苏州通亮照明科技有限公司 Illumination device
US8783889B2 (en) 2011-11-18 2014-07-22 Shenzhen China Star Optoelectronics Technology Co., Ltd. Back frame of flat panel display device, method for manufacturing back frame, and backlight system
US8908137B2 (en) 2011-12-02 2014-12-09 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight module having positioning hook
WO2017000455A1 (en) * 2015-06-30 2017-01-05 京东方科技集团股份有限公司 Integrated structure of backlight back plate and backlight plastic body, backlight and display panel
CN107270213A (en) * 2017-05-05 2017-10-20 中国商用飞机有限责任公司 A kind of interior trim integrated form emergency lighting device

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CN101556008A (en) * 2007-03-09 2009-10-14 友达光电股份有限公司 Assembly method of sidelight-type backlight module
CN101655636A (en) * 2008-08-21 2010-02-24 奇美电子股份有限公司 Side-view backlight module, liquid crystal display device and method for assembling side-view backlight module and liquid crystal display device
CN201434948Y (en) * 2009-04-30 2010-03-31 华映视讯(吴江)有限公司 Liquid crystal display

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Publication number Priority date Publication date Assignee Title
WO2007108608A1 (en) * 2006-03-20 2007-09-27 Lg Innotek Co., Ltd Backlight unit and lcd having the same
KR20080062833A (en) * 2006-12-29 2008-07-03 엘지디스플레이 주식회사 Backlight unit and liquid crystal display device having the same
CN101556008A (en) * 2007-03-09 2009-10-14 友达光电股份有限公司 Assembly method of sidelight-type backlight module
US20080225203A1 (en) * 2007-03-12 2008-09-18 Yong-Kun Kim Backlight unit and liquid crystal display module including the same
CN101655636A (en) * 2008-08-21 2010-02-24 奇美电子股份有限公司 Side-view backlight module, liquid crystal display device and method for assembling side-view backlight module and liquid crystal display device
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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102679235A (en) * 2011-03-11 2012-09-19 常州天禄光电科技有限公司 Backlight module
CN102798033A (en) * 2011-05-25 2012-11-28 奇菱科技股份有限公司 Backlight module
CN102798033B (en) * 2011-05-25 2014-12-10 奇菱光电股份有限公司 Backlight module
CN102392993A (en) * 2011-11-18 2012-03-28 深圳市华星光电技术有限公司 Back frame and backlight system
CN102392994B (en) * 2011-11-18 2014-10-15 深圳市华星光电技术有限公司 Back frame of panel display device, backlight system and panel liquid crystal display device
US8783889B2 (en) 2011-11-18 2014-07-22 Shenzhen China Star Optoelectronics Technology Co., Ltd. Back frame of flat panel display device, method for manufacturing back frame, and backlight system
CN102376226A (en) * 2011-11-18 2012-03-14 深圳市华星光电技术有限公司 Flat-panel display device, stereoscopic display device and plasma display device
CN102392994A (en) * 2011-11-18 2012-03-28 深圳市华星光电技术有限公司 Back frame of panel display device, backlight system and panel liquid crystal display device
CN102392983A (en) * 2011-11-18 2012-03-28 深圳市华星光电技术有限公司 Back frame of panel display device, manufacturing method of back frame and backlight system
CN102392993B (en) * 2011-11-18 2014-02-05 深圳市华星光电技术有限公司 Back frame and backlight system of panel display device
US8672499B2 (en) 2011-11-18 2014-03-18 Shenzhen China Star Optoelectronics Technology Co., Ltd. Flat panel display device, stereoscopic display device, plasma display device
CN102376226B (en) * 2011-11-18 2015-02-11 深圳市华星光电技术有限公司 Flat-panel display device, stereoscopic display device and plasma display device
US8908137B2 (en) 2011-12-02 2014-12-09 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight module having positioning hook
WO2013078744A1 (en) * 2011-12-02 2013-06-06 深圳市华星光电技术有限公司 Positioning hook of optimal film of backlight module
CN102588836B (en) * 2012-02-13 2016-08-03 深圳市华星光电技术有限公司 Backlight module and liquid crystal display
CN102588836A (en) * 2012-02-13 2012-07-18 深圳市华星光电技术有限公司 Backlight module and liquid crystal display
CN102661556A (en) * 2012-05-30 2012-09-12 深圳市华星光电技术有限公司 Backlight module
WO2014043941A1 (en) * 2012-09-24 2014-03-27 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
CN103712178A (en) * 2014-01-23 2014-04-09 苏州通亮照明科技有限公司 Illumination device
WO2017000455A1 (en) * 2015-06-30 2017-01-05 京东方科技集团股份有限公司 Integrated structure of backlight back plate and backlight plastic body, backlight and display panel
US9816689B2 (en) 2015-06-30 2017-11-14 Boe Technology Group Co., Ltd. Backlight back plate, adhesive-metal integrated structure of backlight source, backlight source, and display panel
CN107270213A (en) * 2017-05-05 2017-10-20 中国商用飞机有限责任公司 A kind of interior trim integrated form emergency lighting device

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