CN102798048A - Backlight module - Google Patents

Backlight module Download PDF

Info

Publication number
CN102798048A
CN102798048A CN2012102902947A CN201210290294A CN102798048A CN 102798048 A CN102798048 A CN 102798048A CN 2012102902947 A CN2012102902947 A CN 2012102902947A CN 201210290294 A CN201210290294 A CN 201210290294A CN 102798048 A CN102798048 A CN 102798048A
Authority
CN
China
Prior art keywords
led lamp
substrate
glue frame
module backlight
lamp bar
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.)
Pending
Application number
CN2012102902947A
Other languages
Chinese (zh)
Inventor
肖兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AU Optronics Suzhou Corp Ltd
AU Optronics Corp
Original Assignee
AU Optronics Suzhou Corp Ltd
AU Optronics Corp
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 AU Optronics Suzhou Corp Ltd, AU Optronics Corp filed Critical AU Optronics Suzhou Corp Ltd
Priority to CN2012102902947A priority Critical patent/CN102798048A/en
Publication of CN102798048A publication Critical patent/CN102798048A/en
Pending legal-status Critical Current

Links

Abstract

The invention provides a backlight module which is applicable to positioning of an LED (light-emitting diode) backlight source. The backlight module comprises a rubber frame, a light guiding plate and an LED lamp strip, wherein the rubber frame comprises a bottom and a side wall vertical to the bottom; the side surface of the light guiding plate and the bottom of the rubber frame confine an accommodating space; the LED lamp strip comprises a substrate and at least one LED lamp; the LED lamp is positioned on the bottom surface of the substrate and is arranged inside the accommodating space; and the LED lamp and the bottom of the rubber frame are limited in a concave-convex matching way so as to prevent the LED lamp strip from moving in the vertical direction. By adopting the structure that the LED lamp is arranged inside the accommodating space confined by the bottom of the rubber frame and the side surface of the light guiding plate and the LED lamp and the bottom of the rubber frame are limited in a concave-convex matching way, the LED lamp strip can be prevented from moving in the vertical direction and nonuniform projection of light rays emitted by the LED can be avoided.

Description

A kind of module backlight
Technical field
The present invention relates to a kind of liquid crystal display, relate in particular to the module backlight of this liquid crystal display.
Background technology
Current, module backlight (Back Light Module) is one of critical component of display panels, because liquid crystal itself is not luminous, the function of module backlight promptly is to provide sufficient brightness and the light source that is evenly distributed, and makes its normally display image.LCD (Liquid Crystal Display, liquid crystal display) panel has been widely used in the electronic product of tool growth potentiality such as monitor, notebook computer, digital camera and projector.
Specifically; Module backlight mainly by light source (such as cold cathode fluorescent tube CCFL, thermic cathode fluorimetric pipe, light emitting diode etc.), lampshade, reflecting plate (Reflector), LGP (Light Guide Plate, LGP), assembly such as diffusion sheet (Diffusion sheet), brightness enhancement film (Brightness enhancement film) and housing assembles.In the prior art; For with LED (Light Emitting Diode; Light emitting diode) the lamp bar snaps in the housing of module backlight, roughly comprises two kinds of implementations, and the first snaps in LED lamp bar between glue frame and the LGP from the front; And the bottom surface of this LED lamp bar is fixed to the glue frame and the LGP of its both sides by viscose, so that LED lamp bar is fixed; It two is that LED lamp bar is snapped between glue frame and the LGP from the negative, and the bottom surface of this LED lamp bar is fixed to the glue frame and the LGP of its both sides by viscose.
Above-mentioned dual mode can realize that all LED lamp bar in the vertical direction is not subjected to displacement; But the location of LED lamp bar leans on the viscosity of viscose and area to guarantee basically, as FPC (Flexible Printed Circuit; Flexible print circuit) bounce-back or during out-of-flatness, LED lamp bar floats easily.In addition, current production is designed to adapt to slimming and narrow frame trend, and the area of attachment of viscose is limited, and the adhesion reliability is not high, can cause LED lamp bar to float yet, thereby light leakage phenomena occur.In view of this, how designing a kind of module backlight of novelty, float or puzzlement such as upwarp with effective solution LED lamp bar, improve utilization rate backlight, avoid occurring the light leak situation, is a problem needing to be resolved hurrily of person skilled in the industry.
Summary of the invention
To the existing above-mentioned defective when designing of the module backlight in the liquid crystal display of the prior art, the invention provides a kind of module backlight of novelty.
According to one aspect of the present invention, a kind of module backlight is provided, be suitable for the LED-backlit source is positioned, this module backlight comprises:
One glue frame has a bottom and a sidewall that stands on said bottom;
One LGP, the common definition in the bottom of the side of said LGP and said glue frame one accommodation space; And
One LED lamp bar has a substrate and at least one LED lamp, and said LED lamp is positioned on the bottom surface of said substrate, and places said accommodation space,
Wherein, LED lamp and the bottom of glue frame adopt concavo-convex cooperate carry out spacing, thereby prevent that LED lamp bar from moving at the vertical direction occurrence positions.
Among the embodiment therein, the LED light fixture has one first groove, and the bottom of glue frame has one first convexity, by first groove LED lamp is snapped in first convexity.Further, the first protruding molding thickness is 0.2 millimeter.
Among the embodiment therein, LED lamp bar has one second convexity, and the bottom of glue frame has one second groove, by second convexity LED lamp is snapped in second groove.Further, the groove depth of second groove is 0.2 millimeter.
Among the embodiment therein, this module backlight binds glue frame and the contact portion of substrate and the contact portion of LGP and substrate by double faced adhesive tape.
Among the embodiment therein, double faced adhesive tape is coated the bottom of glue frame or the bottom surface of substrate.
According to another aspect of the present invention, a kind of module backlight is provided, be suitable for the LED-backlit source is positioned, this module backlight comprises:
One glue frame has a bottom and a sidewall that stands on the bottom, and the bottom of glue frame has one the 3rd convexity;
One LGP, the common definition in the bottom of the side of this LGP and glue frame one accommodation space; And
One LED lamp bar; Have a substrate, at least one LED lamp and a tin paste layer, the pig of this substrate and glue frame, the LED lamp places accommodation space; Tin paste layer is attached to the LED lamp on the bottom surface of substrate; And the common definition of tin paste layer, LED lamp and substrate one the 3rd groove, the 3rd convexity snaps in the 3rd groove, thereby prevents that LED lamp bar from moving at the vertical direction occurrence positions.
Among the embodiment therein, bind glue frame and the contact portion of substrate and the contact portion of LGP and substrate by double faced adhesive tape.
Among the embodiment therein, double faced adhesive tape is coated the bottom of glue frame or the bottom surface of substrate.
Adopt module backlight of the present invention; The LED lamp is arranged in the accommodation space of the common definition in side of bottom and LGP of glue frame; And LED lamp bar and the bottom of glue frame adopt concavo-convex cooperate carry out spacing; Thereby can prevent that LED lamp bar from moving at the vertical direction occurrence positions, the ray cast of avoiding LED to send is uneven.Module backlight of the present invention also can be provided with a tin paste layer on LED lamp bar, carry out spacing through the convexity of glue frame bottom and the groove of the common definition of tin paste layer, LED lamp and substrate to LED lamp bar.In addition, the gum between also alternative collocation glue frame of this module backlight and the LED lamp bar is bonding, with the positioning function of further enhancing LED lamp bar in the vertical direction.
Description of drawings
The reader with reference to advantages after the specific embodiment of the present invention, will become apparent various aspects of the present invention.Wherein,
Figure 1A illustrates LED in the traditional backlight module and adopts and positively to snap in mode and carry out spacing view;
Figure 1B illustrates LED in the traditional backlight module and adopts reverse side to snap in mode to carry out spacing view;
Fig. 2 illustrates according to the structured flowchart that is used for LED is carried out first embodiment of spacing module backlight of the present invention;
Fig. 3 illustrates according to the structured flowchart that is used for LED is carried out second embodiment of spacing module backlight of the present invention; And
Fig. 4 illustrates according to the structured flowchart that is used for LED is carried out the 3rd embodiment of spacing module backlight of the present invention.
The specific embodiment
For technology contents that the application is disclosed is more detailed and complete, can be with reference to accompanying drawing and following various specific embodiments of the present invention, identical mark is represented same or analogous assembly in the accompanying drawing.Yet the embodiment that those of ordinary skill in the art should be appreciated that hereinafter to be provided is used for limiting the scope that the present invention is contained.In addition, accompanying drawing only is used for schematically explaining, does not draw according to its life size.
Figure 1A illustrates LED in the traditional backlight module and adopts and positively to snap in mode and carry out spacing view.With reference to Figure 1A, this module backlight mainly comprises a glue frame 10, a LED lamp bar 12 and a LGP 14.Wherein, LED lamp bar 12 comprises a substrate 121 and a LED lamp 123, and this substrate 121 extends in the horizontal direction, and this LED lamp 123 is positioned at vertical direction.
Particularly, glue frame 10 has a bottom and a sidewall that stands on the bottom, is L type structure, and the substrate of the bottom of this L type structure and LED lamp bar 12 121 is connected through double faced adhesive tape.The LED lamp 123 of LED lamp bar 12 has identical height with the bottom of glue frame 10.In addition, LGP 14 is arranged at the right side of LED lamp bar 12, thereby jointly the LED lamp 123 of LED lamp bar 12 is embedded in the centre with glue frame 10.LGP 14 contacts with another part of the substrate 121 of LED lamp bar 12.Thus, because glue frame 10 and LGP 14 all bind with the substrate 121 of LED lamp bar 12 through double faced adhesive tape mutually, so LED lamp bar 12 can not be subjected to displacement at vertical direction.In assembling process, can the substrate of LED lamp bar 12 121 coating double faced adhesive tapes be moved down this LED lamp bar 12 then, reliably bonding up to the double faced adhesive tape of substrate 121 bottom surfaces and glue frame 10 and LGP 14.
Figure 1B illustrates LED in the traditional backlight module and adopts reverse side to snap in mode to carry out spacing view.
Be similar to Figure 1A, glue frame 10 is L type structure, and the substrate of the bottom of this L type structure and LED lamp bar 12 121 is connected through double faced adhesive tape.The LED lamp 123 of LED lamp bar 12 has identical height with the bottom of glue frame 10.Yet, being different from Figure 1A, the substrate 121 of the LED lamp bar 12 among Fig. 2 is positioned at the below of whole glue frame 10, and the substrate 121 of the LED lamp bar 12 among Fig. 1 is positioned at the top of the vertical portion of glue frame 10.Equally, glue frame 10 and LGP 14 all bind with the substrate 121 of LED lamp bar 12 through double faced adhesive tape mutually, so LED lamp bar 12 in the vertical directions can not be subjected to displacement.In assembling process, can be with the bottom surface coating double faced adhesive tape of the substrate 121 of LED lamp bar 12, this LED lamp bar 12 that moves up then, reliably bonding up to the gluing face of the double faced adhesive tape of substrate 121 bottom surfaces with glue frame 10 and LGP 14.
Yet in the module backlight of Figure 1A or Figure 1B, the location of LED lamp bar leans on the viscosity of viscose and area to guarantee basically, and when substrate 121 (such as flexible circuit board) bounce-back or out-of-flatness, LED lamp bar 12 floats easily.In addition, current production is designed to adapt to slimming and narrow frame trend, and the area of attachment of viscose is limited, and the adhesion reliability is not high, can cause LED lamp bar to float yet, and then cause the light leak situation.
In order to solve or eliminate above-mentioned puzzlement effectively, Fig. 2 illustrates according to the structured flowchart that is used for LED is carried out first embodiment of spacing module backlight of the present invention.
With reference to Fig. 2, this module backlight comprises a glue frame 20, a LED lamp bar 22 and a LGP 24.Wherein, this glue frame 20 is L type structure, and has a bottom 201 and a sidewall 203 that stands on this bottom 201.LED lamp bar 22 has a substrate 221 and at least one LED lamp 229, and is coated with double faced adhesive tape 223 in the part of the bottom surface of substrate 221, and the another part in the bottom surface of substrate 221 is coated with double faced adhesive tape 225.In Fig. 2, the part of the substrate 221 of LED lamp bar 22 is bonding with the bottom 201 of glue frame 20 by double faced adhesive tape 223, and another part of the substrate 221 of LED lamp bar 22 is bonding with the side of LGP 24 by double faced adhesive tape 225.
LGP 24 is arranged at the side of LED lamp bar 22.This LGP 24 and this glue frame 20 are separately positioned on the both sides of LED lamp bar 22, and the LED lamp with this LED lamp bar 22 is located between the two jointly.What need particularly point out is, in module backlight of the present invention, the LED lamp 229 of LED lamp bar 22 and the bottom of glue frame 20 201 adopt concavo-convex cooperate carry out spacing, thereby prevent that LED lamp bar 22 from moving at the vertical direction occurrence positions.
In this embodiment, LED lamp 22 has one first groove 227, and the bottom 201 of glue frame 20 has one first protruding 202.In assembling process, LED lamp bar 22 is moved down, thereby first groove 227 is snapped in first convexity 202, move to prevent LED lamp bar 22 in the vertical direction occurrence positions.For example, the convexity of first on the bottom 201 of glue frame 20 202, its molding thickness is 0.2 millimeter.
Should be appreciated that in certain embodiments, can be only by the bottom 201 of glue frame 20 cooperate with male-female between the LED lamp bar 22 carry out spacing.In certain embodiments, also can be on the basis that above-mentioned convex-concave cooperates, in the bottom 201 of glue frame 20 or the bottom surface coating double faced adhesive tape of the substrate 221 of LED lamp bar 22, with being connected of further reinforcing LED lamp bar 22 and glue frame 20 and LGP 24.
Fig. 3 illustrates according to the structured flowchart that is used for LED is carried out second embodiment of spacing module backlight of the present invention.
For describing for simplicity, the same section in the module backlight of Fig. 3 and the module backlight of Fig. 2 repeats no more at this.The main distinction of Fig. 3 and Fig. 2 is to be, when concavo-convex the cooperation carried out with the LED lamp 229 of LED lamp bar 22 in the bottom 201 of glue frame 20, is provided with one second protrudingly 327 in the LED lamp 229 of LED lamp bar 22, and the bottom 201 of glue frame 20 is provided with one second groove 302.In assembling process, LED lamp bar 22 is moved down, thereby second convexity 327 is snapped in second groove 302, can prevent that equally LED lamp bar 22 in the vertical direction occurrence positions from moving.For example, the groove depth of second groove 302 is 0.2 millimeter.
Fig. 4 illustrates according to the structured flowchart that is used for LED is carried out the 3rd embodiment of spacing module backlight of the present invention.
For describing for simplicity, the same section in the module backlight of Fig. 4 and the module backlight of Fig. 2 repeats no more at this.The main distinction of Fig. 4 and Fig. 2 is to be, this LED lamp bar 22 also comprises a tin paste layer 422, is positioned at substrate 221 belows of LED lamp bar, LED lamp 229 is attached on the bottom surface of substrate 221.The bottom 201 of glue frame 20 has one the 3rd protruding 402.Tin paste layer 422, LED lamp 229 and substrate 221 common definition one the 3rd grooves, the 3rd protruding 402 snaps in the 3rd groove, thereby prevents that LED lamp bar 22 from moving at the vertical direction occurrence positions.
As can beappreciated from fig. 4, glue frame 20 is embedded between the substrate 221 and LED lamp 229 of LED lamp bar 22 in its bottom 201 the set the 3rd protruding 402, and the 3rd convexity 402 in the horizontal direction against tin paste layer 422 to fix.When the 3rd protruding 402 embedded the 3rd groove, LED lamp bar 22 can not be subjected to displacement at vertical direction yet.
Adopt module backlight of the present invention; The LED lamp is arranged in the accommodation space of the common definition in side of bottom and LGP of glue frame; And LED lamp bar and the bottom of glue frame adopt concavo-convex cooperate carry out spacing; Thereby can prevent that LED lamp bar from moving at the vertical direction occurrence positions, the ray cast of avoiding LED to send is uneven.Module backlight of the present invention also can be provided with a tin paste layer on LED lamp bar, carry out spacing through the convexity of glue frame bottom and the groove of the common definition of tin paste layer, LED lamp and substrate to LED lamp bar.In addition, the gum between also alternative collocation glue frame of this module backlight and the LED lamp bar is bonding, with the positioning function of further enhancing LED lamp bar in the vertical direction.
In the preceding text, illustrate and describe the specific embodiment of the present invention.But those skilled in the art can understand, and under situation without departing from the spirit and scope of the present invention, can also specific embodiments of the invention do various changes and replacement.These changes and replacement all drop in claims of the present invention institute restricted portion.

Claims (10)

1. a module backlight is suitable for the LED-backlit source is positioned, and it is characterized in that, said module backlight comprises:
One glue frame has a bottom and a sidewall that stands on said bottom;
One LGP, the common definition in the bottom of the side of said LGP and said glue frame one accommodation space; And
One LED lamp bar has a substrate and at least one LED lamp, and said LED lamp is positioned on the bottom surface of said substrate, and places said accommodation space,
Wherein, said LED lamp and the bottom of said glue frame adopt concavo-convex cooperate carry out spacing, thereby prevent that said LED lamp bar from moving at the vertical direction occurrence positions.
2. module backlight according to claim 1 is characterized in that, said LED light fixture has one first groove, and the bottom of said glue frame has one first convexity, by said first groove said LED lamp is snapped in said first convexity.
3. module backlight according to claim 2 is characterized in that, the said first protruding molding thickness is 0.2 millimeter.
4. module backlight according to claim 1 is characterized in that, said LED light fixture has one second convexity, and the bottom of said glue frame has one second groove, by said second convexity said LED lamp is snapped in said second groove.
5. module backlight according to claim 4 is characterized in that, the groove depth of said second groove is 0.2 millimeter.
6. module backlight according to claim 1 is characterized in that, binds the contact portion of said glue frame and said substrate and the contact portion of said LGP and said substrate by double faced adhesive tape.
7. module backlight according to claim 6 is characterized in that, said double faced adhesive tape is coated the bottom of said glue frame or the bottom surface of said substrate.
8. a module backlight is suitable for the LED-backlit source is positioned, and it is characterized in that, said module backlight comprises:
One glue frame has a bottom and a sidewall that stands on said bottom, and the bottom of said glue frame has one the 3rd convexity;
One LGP, the common definition in the bottom of the side of said LGP and said glue frame one accommodation space; And
One LED lamp bar; Have a substrate, at least one LED lamp and a tin paste layer, the pig of said substrate and said glue frame, said LED lamp places said accommodation space; Said tin paste layer is attached to said LED lamp on the bottom surface of said substrate; And the common definition of said tin paste layer, said LED lamp and said substrate one the 3rd groove, said the 3rd convexity snaps in said the 3rd groove, thereby prevents that said LED lamp bar from moving at the vertical direction occurrence positions.
9. module backlight according to claim 8 is characterized in that, binds the contact portion of said glue frame and said substrate and the contact portion of said LGP and said substrate by double faced adhesive tape.
10. module backlight according to claim 9 is characterized in that, said double faced adhesive tape is coated the bottom of said glue frame or the bottom surface of said substrate.
CN2012102902947A 2012-08-15 2012-08-15 Backlight module Pending CN102798048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012102902947A CN102798048A (en) 2012-08-15 2012-08-15 Backlight module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012102902947A CN102798048A (en) 2012-08-15 2012-08-15 Backlight module

Publications (1)

Publication Number Publication Date
CN102798048A true CN102798048A (en) 2012-11-28

Family

ID=47197268

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012102902947A Pending CN102798048A (en) 2012-08-15 2012-08-15 Backlight module

Country Status (1)

Country Link
CN (1) CN102798048A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162247A (en) * 2013-03-11 2013-06-19 深圳市华星光电技术有限公司 Light emitting diode (LED) light bar buckling structure of backlight module and liquid crystal display device comprising backlight module
CN105116606A (en) * 2015-06-26 2015-12-02 武汉华星光电技术有限公司 Reflection sheet, backlight module and display device
WO2016201749A1 (en) * 2015-06-19 2016-12-22 武汉华星光电技术有限公司 Quantum tube light-emitting apparatus, backlight module and liquid crystal display device
CN109782491A (en) * 2019-03-29 2019-05-21 厦门天马微电子有限公司 A kind of backlight module and display device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162247A (en) * 2013-03-11 2013-06-19 深圳市华星光电技术有限公司 Light emitting diode (LED) light bar buckling structure of backlight module and liquid crystal display device comprising backlight module
CN103162247B (en) * 2013-03-11 2014-10-15 深圳市华星光电技术有限公司 Light emitting diode (LED) light bar buckling structure of backlight module and liquid crystal display device comprising backlight module
WO2016201749A1 (en) * 2015-06-19 2016-12-22 武汉华星光电技术有限公司 Quantum tube light-emitting apparatus, backlight module and liquid crystal display device
US9835784B2 (en) 2015-06-19 2017-12-05 Wuhan China Star Optoelectronics Technology Co., Ltd. Illuminating device comprising quantum dot tube, backlight module, and LCD
CN105116606A (en) * 2015-06-26 2015-12-02 武汉华星光电技术有限公司 Reflection sheet, backlight module and display device
CN109782491A (en) * 2019-03-29 2019-05-21 厦门天马微电子有限公司 A kind of backlight module and display device

Similar Documents

Publication Publication Date Title
JP5368562B2 (en) Lighting device and display device
KR20110113981A (en) A backlight unit and an lcd module having the same
JP6450512B2 (en) Backlight module and liquid crystal display device
CN104456302A (en) Backlight module and display
CN102798048A (en) Backlight module
US20170131454A1 (en) Backlight module and liquid crystal display device comprising the same
CN102352979A (en) Backlight module
US8186842B2 (en) Backlight module
US20140029294A1 (en) Backlight module
US9285616B2 (en) Backlight module and liquid crystal display device using same
CN202469772U (en) Direct-light-type backlight source and displaying device
CN100474074C (en) Liquid crystal display device
KR102263821B1 (en) Display apparatus
US8834002B2 (en) Backlight module with side reflector plate protection
CN103162161B (en) Backlight module and liquid crystal display device
KR20090043399A (en) Backlight unit and liquid crystal display device having the same
US20140085926A1 (en) Backlight Module
US20130208505A1 (en) Backlight Module
US9280008B2 (en) Backlight module and liquid crystal display device using same
JP2012182136A (en) Planar light source device, and display device using planar light source device
KR100771568B1 (en) Light guide pannel with structure for preventing leakage of lighting and back light unit using the same
CN104280919A (en) Backlight module of liquid crystal device and backlight module assembly method
US8801258B2 (en) Backlight module
CN210639387U (en) Backlight module and display device thereof
US20190004240A1 (en) Liquid crystal display and backlight module thereof

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20121128

C02 Deemed withdrawal of patent application after publication (patent law 2001)