WO2012151774A1 - 背光模组及液晶显示装置 - Google Patents

背光模组及液晶显示装置 Download PDF

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Publication number
WO2012151774A1
WO2012151774A1 PCT/CN2011/075848 CN2011075848W WO2012151774A1 WO 2012151774 A1 WO2012151774 A1 WO 2012151774A1 CN 2011075848 W CN2011075848 W CN 2011075848W WO 2012151774 A1 WO2012151774 A1 WO 2012151774A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight module
reflective sheet
circuit board
printed circuit
adapter member
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.)
Ceased
Application number
PCT/CN2011/075848
Other languages
English (en)
French (fr)
Inventor
张彦学
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.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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 Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/375,359 priority Critical patent/US8421958B2/en
Publication of WO2012151774A1 publication Critical patent/WO2012151774A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/54—Arrangements for reducing warping-twist

Definitions

  • the present invention relates to the field of flat panel display devices, and more particularly to a backlight module and a liquid crystal display device using the same.
  • the backlight module of the liquid crystal display device fixes the printed circuit board with screws, and the support column abuts the reflection sheet and the support diffusion plate.
  • the assembly method of such support columns and screws requires more screws, and requires more labor and metal materials for installation; and because the area of the nut and the support column is small, the force area is small, so It is easy to cause the printed circuit board to bulge or warp.
  • the nut and the support post cause the reflection sheet and the printed circuit board to be convex or warped, and the back plate of the backlight module is easily deformed by uneven force, and the one end of the prior art support column protrudes to the back. Outside the board, it affects the aesthetics of the appearance and does not meet the appearance requirements.
  • the invention mainly solves the technical problem that the nut and the support column of the prior art backlight module are easy to deform the printed circuit board and the reflective sheet, and provides a backlight module and a liquid crystal display device, which can effectively protect the printing of the backlight module.
  • the circuit board allows the printed circuit board and the reflective sheet to be deformed while supporting the diffusion sheet.
  • one technical solution adopted by the present invention is: providing a backlight module, the backlight module comprising a reflective sheet, a printed circuit board, a diffusion plate and a supporting structure, the reflective sheet being attached to the printed circuit
  • the support structure is located between the diffusion plate and the reflective sheet.
  • the support structure includes a main body portion and a support portion, the printed circuit board includes an adapter member, one end of the main body portion abuts the diffusion plate, and the other end of the main body portion is provided with a plurality of fixing pins and is coupled to the adapter member
  • the connection portion is provided with a plurality of assembly pins and penetrates the reflection sheet.
  • the support portion is sleeved on the main body portion.
  • the backlight module further includes a fixing hole, and the fixing hole receives The adapter member is accommodated.
  • the adapter member includes a plurality of guiding slots, and the guiding of the plurality of guiding slots is parallel to the axis of the fixing hole, and the number of the plurality of guiding slots corresponds to the plurality of fixing pins
  • the plurality of guiding slots are cooperatively positioned with the plurality of fixing pins, and the switching member houses the plurality of fixing pins.
  • the adapter member further includes a plurality of card holes, the opening direction of the plurality of card holes is perpendicular to the guiding of the plurality of guiding slots, and the plurality of fixing pins comprise a plurality of buckles.
  • the number of the plurality of card holes corresponds to the number of the plurality of cards, and the plurality of card holes are coupled to the plurality of the cards.
  • the backlight module further includes a back plate, the fixing hole penetrating the reflective sheet, the printed circuit board and the back board, the switching member penetrating the reflective sheet, the printed circuit board and the Backboard.
  • the support portion further includes a base of a cap structure, the base abuts the reflective sheet, and the plurality of assembly pins penetrate the reflective sheet and the printed circuit board and abut the back board.
  • the adapter member further includes a bottom plate, the bottom plate includes a first bottom surface, and the back plate includes a second bottom surface, the first bottom surface being flush with the second bottom surface.
  • a backlight module including a reflective sheet, a printed circuit board, a diffusion plate, and a support structure
  • the reflective sheet being attached to the printing a support structure is disposed between the diffusion plate and the reflective sheet
  • the printed circuit board includes an adapter member, one end of the support structure abuts the diffusion plate, and the other end of the support structure abuts the reflective sheet, the support The intermediate portion of the structure is snap-fitted to the adapter member.
  • the support structure further includes a rod-shaped body and a round table structure fixed to each other, the rod-shaped body abuts the diffusion plate at one end, and the other end of the rod-shaped body is engaged with the adapter member, the round table The structure abuts the reflective sheet.
  • a liquid crystal display device including a liquid crystal panel and a backlight module, the backlight module including a reflective sheet, a printed circuit board, and a diffusion plate.
  • the liquid crystal panel is attached to the backlight module
  • the reflective sheet Attached to the printed circuit board
  • the support structure is located between the diffusion plate and the reflective sheet
  • the support structure includes a main body portion and a support portion
  • the printed circuit board includes an adapter member, one end of the main body portion abuts
  • the diffusion plate has a plurality of fixing pins disposed at the other end of the main body portion and is engaged with the adapter member.
  • the support portion is provided with a plurality of mounting pins and penetrates the reflective sheet.
  • the support portion is sleeved on the main body portion.
  • the backlight module further includes a fixing hole that accommodates the adapter member.
  • the adapter member includes a plurality of guiding grooves, and the guiding of the plurality of guiding grooves is parallel to the axis of the fixing hole, and the number of the plurality of guiding grooves corresponds to the plurality of fixing pins
  • the plurality of guiding slots are disposed in cooperation with the plurality of fixing pins
  • the switching member houses the plurality of fixing tubes as a further improvement of the liquid crystal display device, wherein the switching member further comprises a plurality of card holes, the plurality of The opening direction of the card hole is perpendicular to the guiding of the plurality of guiding slots, and the plurality of fixing pins comprise a plurality of latching holes, the number of the plurality of latching holes corresponding to the number of the plurality of latching holes, the plurality of latching holes and the plurality of latching holes Multiple snaps are snap-fitted.
  • the backlight module further includes a back plate penetrating the reflective sheet, the printed circuit board and the back plate, the adapter member penetrating the reflective sheet, the printed circuit board and the Backboard.
  • the support portion further includes a base of a cap structure, the base 4 is coupled to the reflective sheet, and the plurality of assembly pins extend through the reflective sheet and the printed circuit board.
  • the backboard is coupled to the base 4 .
  • the adapter member further includes a bottom plate, the bottom plate includes a first bottom surface, and the back plate includes a second bottom surface, the first bottom surface being flush with the second bottom surface.
  • the plurality of card holes are provided in the track of the guide groove.
  • the plurality of fixing pins and the plurality of mounting pins are located on the same side of the base.
  • the backlight module of the present invention uses an adapter member and a support structure, And the supporting structure is provided with a plurality of fixing pins abutting the adapter member and the plurality of mounting pins, so that the supporting structure can be pressed onto the reflective sheet in a relatively large area and the plurality of assembling pins abut the backing plate Thereby the diffusion plate is stably supported.
  • the base of the cap-shaped structure abuts the reflective sheet
  • the plurality of assembly pins are used to abut the back plate
  • the plurality of assembly members are used to fix the plurality of the back plates. Fixing the pin, so that the reflective sheet, the printed circuit board and the back plate are balanced by force, and the printed circuit board and the back plate are prevented from being deformed due to uneven force, and the first bottom surface of the adapter member and the The second bottom surface of the backboard is flush, so that the second bottom surface of the backboard is kept flat and beautiful.
  • FIG. 1 is a perspective view of a preferred embodiment of a backlight module of the present invention.
  • FIG. 2 is a flip-up enlarged view of the support structure of the backlight module shown in FIG. 1.
  • FIG. 3 is an enlarged schematic view of the adapter member of the backlight module shown in FIG.
  • FIG. 4 is a schematic structural view of the backlight module shown in FIG. 1 assembled.
  • FIG. 5 is a partial cross-sectional view of the backlight module of FIG. 4 taken along the V-V direction.
  • FIG. 1 is a schematic perspective view of a preferred embodiment of the backlight module of the present invention
  • FIG. 2 is a schematic enlarged view of the support structure of the backlight module of FIG.
  • the backlight module (not shown) of this embodiment includes a reflection sheet 10, a printed circuit board 11, a diffusion plate 12, a back plate 13, a support structure 21, and a plurality of LEDs (Light Emitting Diodes) 17.
  • the reflective sheet 10 is attached to the printed circuit board 11 .
  • the printed circuit board 11 is located between the reflective sheet 10 and the back sheet 13 .
  • the back sheet 13 is attached to the printed circuit board 11 and the reflective sheet is attached. 10 and the back sheet 13 are located on opposite sides of the printed circuit board 11.
  • the backlight module further includes a penetrating through the reflective sheet 10, the printed circuit board 11 and the back sheet 13
  • the hole which functions as a fixing support structure 21 in the present embodiment, is for convenience of understanding, and the through hole is named as a fixing hole according to its action.
  • the reflective sheet 10 includes four upper mounting holes 15, and the printed circuit board 11 includes four lower mounting holes 16, which respectively correspond to the four lower mounting holes 16 and form corresponding four Through holes, the four through holes function as an assembly.
  • the four through holes are named as four assembly holes according to their action, and the four assembly holes are uniformly distributed around the fixing holes. .
  • the printed circuit board 11 further includes an adapter member 22 that houses the adapter member 22, and the adapter member 22 extends through the reflection sheet 10, the printed circuit board 11, and the back sheet 13.
  • the support structure 21 and the adapter member 22 form a support body 14.
  • the adapter member 22 includes a side wall 220, a plurality of card holes 221, a plurality of guide grooves 222, and a bottom plate 223.
  • the side wall 220 is of a cylindrical shape, and the side wall 220 forms a blind hole (not shown) with the bottom plate 223.
  • the plurality of guiding holes 222 are disposed on the side wall 220 inside the blind hole, and the plurality of card holes 221 are disposed in the track of the guiding groove 222.
  • the guiding of the plurality of guiding grooves 222 (the guiding direction of the opening of the rail) is parallel to the axis of the fixing hole.
  • the opening direction of the plurality of card holes 221 is perpendicular to the guiding of the guiding groove 222, and the plurality of card holes 221 correspond to the plurality of guiding grooves 222.
  • the support structure 21 is located between the diffuser plate 12 and the reflective sheet 10, and includes a main body portion 200 and a support portion 210.
  • the support portion 210 is sleeved on the main body portion 200.
  • the main body portion 200 and the support portion 210 are integrally formed. forming.
  • the body portion 200 includes a strip end (not labeled), a plurality of snaps 201, and a plurality of securing pins 202.
  • the strip end is located on one side of the support portion 210, and the plurality of snaps 201 and the plurality of fixed pins 202 are located on the other side of the support portion 210.
  • the plurality of fixing pins 202 are extensions of the strip ends, and the plurality of clips 201 are disposed on the curved surfaces of the plurality of fixing pins 202.
  • the strip end is of a cylindrical shape
  • the end of the diffusing plate 12 is a curved surface
  • the curved surface structure can buffer the collision and extrusion from the diffusing plate 12, which is beneficial to The flatness of the diffusion plate 12 is protected.
  • the support portion 210 includes a base (not labeled) and extends from the base to form four mounting pins 211.
  • the base is a cap-like structure that abuts the reflective sheet 10 when assembled.
  • the four assembly holes respectively receive the four assembly pins 211, and the four assembly pins 211 penetrate the reflection The sheet 10 and the printed circuit board 11 abut against the back sheet 13.
  • the body portion 200 is a rod-shaped body that abuts the end of the diffuser panel 12 in a structure similar to a yurt-shaped shape to facilitate the relief of the force.
  • the cap base of the support portion 210 may also be a disc-shaped base, which forms a round table structure with the plurality of assembly pins 211, that is, the plurality of assembly pins 211 are tables of the round table structure. Foot, of course, can be slightly modified according to actual needs, as will be understood by those skilled in the art.
  • the plurality of fixed pins 202 and the four mounting pins 211 are located on the same side of the base.
  • the plurality of LEDs 17 are disposed on the printed circuit board 11 and penetrate the reflective sheet 10, and the plurality of LEDs 17 are electrically connected to the printed circuit board 11.
  • FIG. 4 is a schematic structural view of the backlight module shown in FIG. 1 after assembly
  • FIG. 5 is a partial cross-sectional view of the backlight module shown in FIG. 4 along the V-V direction.
  • the reflective sheet 10 is attached to the printed circuit board 11, and then placed on the backing plate 13, the printed circuit board 11 is attached to the backing plate 13, and the four upper mounting holes 15 of the reflective sheet 10 are attached.
  • the four mounting holes are formed in correspondence with the four lower fitting holes 16 of the printed circuit board 11, and the fixing holes penetrate the reflection sheet 10, the printed circuit board 11, and the back sheet 13, as described above.
  • the adapter member 22 is pressed and completely received in the fixing hole, and the bottom plate 223 is parallel to the back plate 13. Further, the bottom plate 223 includes a first bottom surface 2230 disposed on an outer side surface of the bottom plate 223.
  • the back surface plate 13 includes a second bottom surface 130. The first bottom surface 2230 is flush with the second bottom surface 130, so that the bottom plate 223 and the bottom plate 223 The backing plates 13 are in the same plane.
  • the four mounting pins 211 of the supporting structure 21 are aligned with the four mounting holes, and the plurality of fixing pins 202 are aligned with the fixing holes, and the switching member 22 is rotated such that the plurality of fixing pins 202
  • the plurality of guide grooves 222 are further aligned.
  • the four mounting pins 211 are press-fitted into the four mounting holes, and correspondingly, the plurality of fixing pins 202 are pressed into the fixing holes, and further, the plurality of fixing pins 202 are pressed into each other.
  • the plurality of guide grooves 222 are in the middle. At this time, the plurality of fixing pins 202 are cooperatively positioned with the plurality of guiding slots 222, and the connecting member
  • the blind holes of 22 accommodate the plurality of fixed pins 202.
  • the plurality of buckles 201 of the plurality of fixing pins 202 are deformed by compression, and after the plurality of fixing pins 202 are pressed to the designated position, the plurality of buckles 201 and the plurality of cards
  • the hole 221 is snap-fitted, and at this time, the end surface portion of the plurality of fixing pins 202 abuts against the bottom plate 223.
  • the diffusion plate 12 is abutted against the circular arc-shaped end surface of the strip end of the support structure 21.
  • the number of the assembly holes is four, and may be two, three or more, and the plurality of assembly holes are distributed around the fixing holes.
  • the number of the assembly pins 211 matches the number of the assembly holes, and the number is not limited.
  • the number of the fixed pins 202 is not limited, and may be two or more.
  • the two fixed pins 202 are formed by cutting a hollow cylinder, and the two fixed pins 202 are axially formed.
  • the plurality of buckles 201 are disposed on the outer contour of the plurality of fixing pins 202, and the number of the plurality of buckles 201 corresponds to the number of the plurality of card holes 221 .
  • the backlight module of the present invention is formed.
  • the support structure 21 of the backlight module of the present invention abuts the reflective sheet 10 with the base of the cap structure, and abuts the back plate 13 by using a plurality of mounting pins 211, and the adapter member is used
  • the plurality of fixing pins 202 are fixed, so that the reflective sheet 10, the printed circuit board 11 and the backing plate 13 are balanced by force, thereby preventing the printed circuit board 11 from being deformed due to uneven force, and due to the transfer
  • the first bottom surface 2230 of the adapter member 22 and the second bottom surface 130 of the backboard 13 are flush, so that the back panel 13 of the backlight module is kept flat and beautiful.
  • the present invention also provides a liquid crystal display device including a liquid crystal panel and the above-described backlight module.
  • the liquid crystal panel is attached to the diffusion sheet 12 and is opposite to the supporting structure 21 on opposite sides of the diffusion sheet 12. .

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Description

背光模组及液晶显示装置
【技术领域】
本发明涉及平板显示装置领域， 特别是涉及背光模组及釆用该背光模组的 液晶显示装置。
【背景技术】
现有技术中， 液晶显示装置的背光模组都会用螺丝固定印刷电路板， 并釆 用支撑柱抵接反射片和支撑扩散板。 釆用这种支撑柱和螺丝的组装方式， 需要 比较多的螺丝， 并需要耗费较多的工时和金属材料进行安装； 而由于螺帽和支 撑柱的面积小， 受力面积也较小， 因此容易造成印刷电路板凸起或翘曲。
在一体机中， 螺帽和支撑柱导致反射片和印刷电路板凸起或者翘曲， 容易 使背光模组的背板受力不均匀而变形， 而且现有技术的支撑柱一端突出到该背 板外， 影响外观的美感， 达不到外观要求。
【发明内容】
本发明主要解决现有技术背光模组中的螺帽和支撑柱易使印刷电路板和反 射片变形的技术问题， 提供一种背光模组及液晶显示装置， 能够有效地保护背 光模组的印刷电路板， 使印刷电路板和反射片避免变形的同时还能支撑扩散片。
为解决上述技术问题， 本发明釆用的一个技术方案是： 提供一种背光模组， 该背光模组包括反射片、 印刷电路板、 扩散板和支撑结构， 该反射片贴合于该 印刷电路板上， 该支撑结构位于该扩散板与该反射片之间。 该支撑结构包括主 体部分和支撑部分， 该印刷电路板包括转接构件， 该主体部分的一端抵接该扩 散板， 该主体部分的另一端设有多个固定管脚并与该转接构件卡合连接， 该支 撑部分设有多个装配管脚并贯穿该反射片。
作为上述背光模组的进一步改进， 该支撑部分套设于该主体部分上。
作为上述背光模组的进一步改进， 该背光模组还包括固定孔， 该固定孔收 容该转接构件。
作为上述背光模组的进一步改进， 该转接构件包括多个导槽， 该多个导槽 的导向与该固定孔的轴心平行， 该多个导槽的数量对应该多个固定管脚的数量， 该多个导槽与该多个固定管脚配合定位， 该转接构件收容该多个固定管脚。
作为上述背光模组的进一步改进， 该转接构件还包括多个卡孔， 该多个卡 孔的开口方向垂直于该多个导槽的导向， 该多个固定管脚包括多个卡扣， 该多 个卡孔的数量对应该多个卡扣的数量， 该多个卡孔与该多个卡扣卡合连接。
作为上述背光模组的进一步改进， 该背光模组还包括背板， 该固定孔贯穿 该反射片、 该印刷电路板和该背板， 该转接构件贯穿该反射片、 该印刷电路板 和该背板。
作为上述背光模组的进一步改进， 该支撑部分还包括帽状结构的基座， 该 基座抵接该反射片， 该多个装配管脚贯穿该反射片和该印刷电路板并抵接该背 板。
作为上述背光模组的进一步改进， 该转接构件还包括一底板， 该底板包括 第一底面， 该背板包括第二底面， 该第一底面与该第二底面平齐。
为解决上述技术问题， 本发明釆用的另一个技术方案是： 提供一种背光模 组， 该背光模组包括反射片、 印刷电路板、 扩散板和支撑结构， 该反射片贴合 于该印刷电路板上， 该支撑结构位于该扩散板与该反射片之间， 该印刷电路板 包括转接构件， 该支撑结构的一端抵接扩散板， 该支撑结构的另一端抵接反射 片， 该支撑结构的中间部分与该转接构件卡合连接。
作为上述背光模组的进一步改进， 该支撑结构进一步包括相互固定的棒状 体和圓桌结构， 该棒状体一端抵接该扩散板， 该棒状体的另一端与该转接构件 卡合连接， 该圓桌结构抵接该反射片。
为解决上述技术问题， 本发明釆用的另一个技术方案是： 提供一种液晶显 示装置， 该液晶显示装置包括液晶面板和背光模组， 该背光模组包括反射片、 印刷电路板、 扩散板和支撑结构， 该液晶面板贴合到该背光模组上， 该反射片 贴合于该印刷电路板上， 该支撑结构位于该扩散板与该反射片之间， 该支撑结 构包括主体部分和支撑部分， 该印刷电路板包括转接构件， 该主体部分的一端 抵接该扩散板， 该主体部分的另一端设有多个固定管脚并与该转接构件卡合连 接， 该支撑部分设有多个装配管脚并贯穿该反射片。
作为上述液晶显示装置的进一步改进， 该支撑部分套设于该主体部分上。 作为上述液晶显示装置的进一步改进， 该背光模组还包括固定孔， 该固定 孔收容该转接构件。
作为上述液晶显示装置的进一步改进， 该转接构件包括多个导槽， 该多个 导槽的导向与该固定孔的轴心平行， 该多个导槽的数量对应该多个固定管脚的 数量， 该多个导槽与该多个固定管脚配合定位， 该转接构件收容该多个固定管 作为上述液晶显示装置的进一步改进， 该转接构件还包括多个卡孔， 该多 个卡孔的开口方向垂直于该多个导槽的导向， 该多个固定管脚包括多个卡扣， 该多个卡孔的数量对应该多个卡扣的数量， 该多个卡孔与该多个卡扣卡合连接。
作为上述液晶显示装置的进一步改进， 该背光模组还包括背板， 该固定孔 贯穿该反射片、 该印刷电路板和该背板， 该转接构件贯穿该反射片、 该印刷电 路板和该背板。
作为上述液晶显示装置的进一步改进， 该支撑部分还包括帽状结构的基座， 该基座 4氐接该反射片， 该多个装配管脚贯穿该反射片和该印刷电路板并 4氐接该 背板。
作为上述液晶显示装置的进一步改进， 该转接构件还包括底板， 该底板包 括第一底面， 该背板包括第二底面， 该第一底面与该第二底面平齐。
作为上述液晶显示装置的进一步改进， 该多个卡孔设于该导槽的轨道内。 作为上述液晶显示装置的进一步改进， 该多个固定管脚和该多个装配管脚 位于该基座的相同侧。
本发明的有益效果是： 本发明背光模组釆用转接构件和支撑结构的方式， 并在该支撑结构设置多个固定管脚抵接该转接构件和多个装配管脚， 使得该支 撑结构能比较大面积压合到该反射片上且该多个装配管脚抵接该背板从而稳定 地支撑该扩散板。
本发明背光模组的该支撑结构， 釆用帽状结构的该基座抵接该反射片， 并 釆用多个装配管脚共同抵接该背板、 釆用该转接构件固定该多个固定管脚， 使 得该反射片、 该印刷电路板和该背板受力均衡， 避免了该印刷电路板和该背板 由于受力不均而变形， 而该转接构件的第一底面和该背板的第二底面平齐， 使 得该背板的第二底面保持平整、 美观。
【附图说明】
图 1是本发明背光模组一较佳实施例的立体结构示意图。
图 2是图 1所示背光模组的支撑结构的翻转放大示意图。
图 3图 1所示背光模组的转接构件的放大示意图。
图 4是是图 1所示背光模组组装后的结构示意图。
图 5是图 4所示背光模组沿着 V-V方向的局部剖视示意图。
【具体实施方式】
请一并参阅图 1到图 3 ,图 1是本发明背光模组一较佳实施例的立体结构示 意图， 图 2是图 1所示背光模组的支撑结构的翻转放大示意图， 图 3是图 1所 示背光模组的转接构件的放大示意图。
本实施例的背光模组 (未标示 )包括反射片 10、 印刷电路板 11、扩散板 12、 背板 13、 支撑结构 21和多个 LED ( Light Emitting Diode, 发光二极管） 17。
该反射片 10贴合于该印刷电路板 11上，该印刷电路板 11位于该反射片 10 和该背板 13之间， 该背板 13贴合于该印刷电路板 11上， 且该反射片 10和该 背板 13位于该印刷电路板 11的相对两侧。
该背光模组还包括贯穿该反射片 10、 该印刷电路板 11和该背板 13的贯穿 孔， 在本实施例中起固定支撑结构 21的作用， 为方便理解， 该贯穿孔按其作用 而命名为固定孔。 该反射片 10包括四个上装配孔 15 , 该印刷电路板 11 包括四 个下装配孔 16, 该四个上装配孔 15和该四个下装配孔 16分别相对应， 并形成 对应的四个通孔， 该四个通孔起装配的作用， 下文中， 为方便理解， 该四个通 孔按其作用而命名为四个装配孔， 该四个装配孔均勾地分布在该固定孔周围。
该印刷电路板 11还包括转接构件 22 , 该固定孔收容该转接构件 22, 且该 转接构件 22贯穿该反射片 10、 该印刷电路板 11和该背板 13。 其中， 该支撑结 构 21和该转接构件 22形成支撑体 14。
该转接构件 22包括侧壁 220、 多个卡孔 221、 多个导槽 222和底板 223。 该 侧壁 220为柱型， 该侧壁 220与该底板 223形成一盲孔（未标示）。 该多个导槽 222设于该盲孔内部的该侧壁 220上，该多个卡孔 221设于该导槽 222的轨道内。 该多个导槽 222 的导向 （该导向即为该轨道的开口方向）与该固定孔的轴心平 行。 该多个卡孔 221 的开口方向垂直于该导槽 222的导向， 且该多个卡孔 221 和该多个导槽 222——对应。
该支撑结构 21位于该扩散板 12与该反射片 10之间， 包括主体部分 200和 支撑部分 210 , 该支撑部分 210套设于该主体部分 200上， 该主体部分 200和该 支撑部分 210—体成型。
该主体部分 200包括条形端（未标示）、 多个卡扣 201和多个固定管脚 202。 该条形端位于该支撑部分 210的一侧， 该多个卡扣 201和该多个固定管脚 202 位于该支撑部分 210的另一侧。 该多个固定管脚 202为该条形端的延伸部分， 该多个卡扣 201设置于该多个固定管脚 202的弧形面上。 在本实施例中， 该条 形端为柱型， 且抵接该扩散板 12的端为弧形面， 该弧形面的结构可緩冲来自于 该扩散板 12的碰撞挤压， 有利于保护该扩散板 12的平整性。
该支撑部分 210包括基座（未标示）和从该基座延伸形成四个装配管脚 211。 该基座为帽状结构， 装配的时候， 该基座抵接该反射片 10。 在本发明实施例中， 该四个装配孔分别收容该四个装配管脚 211 ,且该四个装配管脚 211贯穿该反射 片 10和该印刷电路板 11并抵接该背板 13上。
在本发明的优选实施例中， 该主体部分 200为棒状体， 其抵接该扩散板 12 的端釆用类似于蒙古包形的结构， 有利于减緩其受力。 该支撑部分 210 的帽状 基座也可以为圓盘型基座， 其与该多个装配管脚 211 形成一圓桌结构， 亦即是 说， 该多个装配管脚 211 为该圓桌结构的桌脚， 当然， 在本领域技术人员理解 的情况下， 可以根据实际需要而作稍微的改变。
在本实施例中， 该多个固定管脚 202和该四个装配管脚 211位于该基座的 相同侧。
该多个 LED17设于该印刷电路板 11上， 并贯穿该反射片 10 , 多个 LED17 与该印刷电路板 11电性连接。
请参阅图 4和图 5 , 图 4是图 1所示背光模组组装后的结构示意图， 图 5是 图 4所示背光模组沿着 V-V方向的局部剖视示意图。
该反射片 10贴合到该印刷电路板 11上， 然后放置到该背板 13上， 该印刷 电路板 11贴合到该背板 13上， 并使该反射片 10的四个上装配孔 15与该印刷 电路板 11 的四个下装配孔 16对应贯通形成该四个装配孔， 如前所述， 该固定 孔贯通该反射片 10、 该印刷电路板 11和该背板 13。
把该转接构件 22压合并完全收容在该固定孔里， 并使该底板 223与该背板 13平行。进一步地，该底板 223包括设置在底板 223的外侧面的第一底面 2230 , 该背板 13包括第二底面 130 , 该第一底面 2230与该第二底面 130平齐，使该底 板 223与该背板 13处于同一平面内。
巴该支撑结构 21的四个装配管脚 211对准该四个装配孔， 并使得该多个固 定管脚 202对准该固定孔， 旋转该转接构件 22, 使得该多个固定管脚 202进一 步对准该多个导槽 222。
把该四个装配管脚 211 压合进该四个装配孔里， 对应地， 把该多个固定管 脚 202压合进该固定孔里， 进一步地， 该多个固定管脚 202压合进该多个导槽 222里。 此时， 该多个固定管脚 202与该多个导槽 222配合定位， 该转接构件 22的盲孔收容该多个固定管脚 202。
上述压合过程中， 该多个固定管脚 202的多个卡扣 201 由于受压变形， 当 该多个固定管脚 202压合到指定位置后， 该多个卡扣 201和该多个卡孔 221卡 合连接， 且此时该多个固定管脚 202的端面部分抵接该底板 223 , 通过上述组合 方式， 该支撑结构 21被限制固定在该固定孔上。
接着， 把该扩散板 12抵接到该支撑结构 21的条形端的圓弧形端面上。 其中， 在本发明实施例中， 该装配孔的数量为四个， 也可以设置为二、 三 或五个以上， 该多个装配孔均勾分布在该固定孔周围。 对应地， 该装配管脚 211 的个数与该装配孔的个数——匹配， 数量并不限定。 该固定管脚 202 的数量并 不限定， 可为两个以上， 例如， 为两个时， 该两个固定管脚 202 为一空心圓柱 体经过切割加工而形成， 该两个固定管脚 202 轴对称， 另外， 该多个卡扣 201 设置于该多个固定管脚 202的外轮廓上， 该多个卡扣 201 的数量对应该多个卡 孔 221的数量。
经过上述组装， 形成本发明的背光模组。 本发明背光模组的该支撑结构 21 , 釆用帽状结构的该基座抵接该反射片 10 , 并釆用多个装配管脚 211共同抵接该 背板 13、 釆用该转接构件 22固定该多个固定管脚 202, 使得该反射片 10、 该印 刷电路板 11和该背板 13受力均衡， 避免了该印刷电路板 11由于受力不均而变 形， 且由于该转接构件 22完全收容于该固定孔、 该转接构件 22的该第一底面 2230和该背板 13的该第二底面 130平齐， 使得该背光模组的背板 13保持平整 和美观。
本发明还提供一种液晶显示装置， 该液晶显示装置包括液晶面板以及上述 的背光模组， 该液晶面板贴合到该扩散片 12上并与该支撑结构 21处于该扩散 片 12的相对两侧。
以上所述仅为本发明的实施例， 并非因此限制本发明的专利范围， 凡是利 用本发明说明书及附图内容所作的等效结构或等效流程变换， 或直接或间接运 用在其他相关的技术领域， 均同理包括在本发明的专利保护范围内。

Claims

权 利 要求
1. 一种背光模组， 其特征在于， 所述背光模组包括反射片、 印刷电路板、 扩散板和支撑结构， 所述反射片贴合于所述印刷电路板上， 所述支撑结构位于 所述扩散板与所述反射片之间， 所述支撑结构包括主体部分和支撑部分， 所述 印刷电路板包括转接构件， 所述主体部分的一端抵接所述扩散板， 所述主体部 分的另一端设有多个固定管脚并与所述转接构件卡合连接， 所述支撑部分设有 多个装配管脚并贯穿所述反射片。
2. 根据权利要求 1所述的背光模组， 其特征在于， 所述支撑部分套设于所 述主体部分上。
3. 根据权利要求 1所述的背光模组， 其特征在于， 所述背光模组还包括固 定孔， 所述固定孔收容所述转接构件。
4. 根据权利要求 3所述的背光模组， 其特征在于， 所述转接构件包括多个 导槽， 所述多个导槽的导向与所述固定孔的轴心平行， 所述多个导槽的数量对 应所述多个固定管脚的数量， 所述多个导槽与所述多个固定管脚配合定位， 所 述转接构件收容所述多个固定管脚。
5. 根据权利要求 4所述的背光模组， 其特征在于， 所述转接构件还包括多 个卡孔， 所述多个卡孔的开口方向垂直于所述多个导槽的导向， 所述多个固定 管脚包括多个卡扣， 所述多个卡孔的数量对应所述多个卡扣的数量， 所述多个 卡孔与所述多个卡扣卡合连接。
6. 根据权利要求 3所述的背光模组， 其特征在于， 所述背光模组还包括背 板， 所述固定孔贯穿所述反射片、 所述印刷电路板和所述背板， 所述转接构件 贯穿所述反射片、 所述印刷电路板和所述背板。
7. 根据权利要求 6所述的背光模组， 其特征在于， 所述支撑部分还包括帽 状结构的基座， 所述基座抵接所述反射片， 所述多个装配管脚贯穿所述反射片 和所述印刷电路板并抵接所述背板。
8. 根据权利要求 6所述的背光模组， 其特征在于， 所述转接构件还包括一 底板， 所述底板包括第一底面， 所述背板包括第二底面， 所述第一底面与所述 第二底面平齐。
9. 一种背光模组， 其特征在于， 所述背光模组包括反射片、 印刷电路板、 扩散板和支撑结构， 所述反射片贴合于所述印刷电路板上， 所述支撑结构位于 所述扩散板与所述反射片之间， 所述印刷电路板包括转接构件， 所述支撑结构 的一端抵接所述扩散板， 所述支撑结构的另一端抵接所述反射片， 所述支撑结 构的中间部分与所述转接构件卡合连接。
10. 根据权利要求 9所述的背光模组， 其特征在于， 所述支撑结构进一步包 括相互固定的棒状体和圓桌结构， 所述棒状体一端抵接所述扩散板， 所述棒状 体的另一端与所述转接构件卡合连接， 所述圓桌结构抵接所述反射片。
11. 一种液晶显示装置， 其特征在于， 所述液晶显示装置包括液晶面板和背 光模组， 所述背光模组包括反射片、 印刷电路板、 扩散板和支撑结构， 所述液 晶面板贴合到所述背光模组上， 所述反射片贴合于所述印刷电路板上， 所述支 撑结构位于所述扩散板与所述反射片之间， 所述支撑结构包括主体部分和支撑 部分， 所述印刷电路板包括转接构件， 所述主体部分的一端抵接所述扩散板， 所述主体部分的另一端设有多个固定管脚并与所述转接构件卡合连接， 所述支 撑部分设有多个装配管脚并贯穿所述反射片。
12. 根据权利要求 11所述的液晶显示装置， 其特征在于， 所述支撑部分套 设于所述主体部分上。
13. 根据权利要求 11所述的液晶显示装置， 其特征在于， 所述背光模组还 包括固定孔， 所述固定孔收容所述转接构件。
14. 根据权利要求 13所述的液晶显示装置， 其特征在于， 所述转接构件包 括多个导槽， 所述多个导槽的导向与所述固定孔的轴心平行， 所述多个导槽的 数量对应所述多个固定管脚的数量， 所述多个导槽与所述多个固定管脚配合定 位， 所述转接构件收容所述多个固定管脚。
15. 根据权利要求 14所述的液晶显示装置， 其特征在于， 所述转接构件还 包括多个卡孔， 所述多个卡孔的开口方向垂直于所述多个导槽的导向， 所述多 个固定管脚包括多个卡扣， 所述多个卡孔的数量对应所述多个卡扣的数量， 所 述多个卡孔与所述多个卡扣卡合连接。
16. 根据权利要求 13所述的液晶显示装置， 其特征在于， 所述背光模组还 包括背板， 所述固定孔贯穿所述反射片、 所述印刷电路板和所述背板， 所述转 接构件贯穿所述反射片、 所述印刷电路板和所述背板。
17. 根据权利要求 16所述的液晶显示装置， 其特征在于， 所述支撑部分还 包括帽状结构的基座， 所述基座抵接所述反射片， 所述多个装配管脚贯穿所述 反射片和所述印刷电路板并抵接所述背板。
18. 根据权利要求 16所述的液晶显示装置， 其特征在于， 所述转接构件还 包括底板， 所述底板包括第一底面， 所述背板包括第二底面， 所述第一底面与 所述第二底面平齐。
19. 根据权利要求 15所述的液晶显示装置， 其特征在于， 所述多个卡孔设 于所述导槽的轨道内。
20.根据权利要求 17所述的液晶显示装置， 其特征在于， 所述多个固定管脚 和所述多个装配管脚位于所述基座的相同侧。
PCT/CN2011/075848 2011-05-10 2011-06-20 背光模组及液晶显示装置 Ceased WO2012151774A1 (zh)

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