WO2014019245A1 - 背光模组、背光模组的组装方法及组装治具 - Google Patents

背光模组、背光模组的组装方法及组装治具 Download PDF

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Publication number
WO2014019245A1
WO2014019245A1 PCT/CN2012/079823 CN2012079823W WO2014019245A1 WO 2014019245 A1 WO2014019245 A1 WO 2014019245A1 CN 2012079823 W CN2012079823 W CN 2012079823W WO 2014019245 A1 WO2014019245 A1 WO 2014019245A1
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WO
WIPO (PCT)
Prior art keywords
backlight module
optical elements
assembly
backing plate
backplane
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/CN2012/079823
Other languages
English (en)
French (fr)
Inventor
郭仪正
萧宇均
阙成文
张庞岭
李德华
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 US13/582,998 priority Critical patent/US9053649B2/en
Publication of WO2014019245A1 publication Critical patent/WO2014019245A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0413—Frames or casing structures therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133328—Segmented frames
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making

Definitions

  • the invention relates to a backlight module, a method for assembling a backlight module and an assembly fixture of the backlight module.
  • a liquid crystal module includes a backlight module, a liquid crystal panel and a front frame.
  • the liquid crystal panel and the backlight module are stacked and fixedly connected through the front frame.
  • the backlight module is mainly composed of a back plate, an optical component, a light source and a plastic frame.
  • the backplane, the optical component, and the plastic frame are stacked and assembled in sequence, and the optical component is fixed by the backboard and the plastic frame.
  • the above assembly is performed by manual assembly, and the assembly efficiency is low.
  • the technical problem to be solved by the present invention is to provide a backlight module with high assembly efficiency, an assembly method of the backlight module, and an assembly fixture.
  • a technical solution adopted by the present invention is: a backlight module comprising a set of optical components, a backboard and a connecting mechanism, a set of optical components being stacked, the backboard comprising at least two independent backs a plate member for respectively clamping at least one side edge of a group of optical elements, each back plate member comprising a top wall, a bottom wall, and a side wall connecting the top wall and the bottom wall, the bottom wall including a protrusion convex toward the top wall
  • a set of optical elements are held by the top and bottom walls of the backplane element, the projections being in contact with a set of optical elements; the backplane elements being interconnected by a connection mechanism.
  • the backplane comprises four backplane elements, each backplane component holding a side edge of a set of optical components.
  • the connecting mechanism is a screw.
  • a method for assembling a backlight module comprising a set of optical components and a backplane including at least two mutually independent backplane components, each The backplane component includes a top wall, a bottom wall, and a sidewall connecting the top wall and the bottom wall.
  • the method of assembling the backlight module includes the steps of: stacking a group of optical components in a first direction; and perpendicular to the first direction The backing member is urged in two directions such that the top and bottom walls of the backing member sandwich a set of optical components.
  • the bottom wall includes a protrusion protruding toward the top wall, and the step of pushing the back plate member in a second direction perpendicular to the first direction to sandwich the top and bottom walls of the back plate member with the set of optical elements,
  • the projections are in contact with a set of optical elements.
  • the assembling method of the backlight module further includes: connecting at least two backplane components.
  • the backboard comprises four backplane components.
  • the adjacent backplane elements partially overlap each other, and the positions where the adjacent backplane components overlap each other are connected by a connection mechanism.
  • the connecting mechanism is a screw.
  • an assembly fixture of a backlight module includes a set of optical components and a backboard including at least two mutually independent backplane components, each A backplane component includes a top wall, a bottom wall, and a sidewall connecting the top wall and the bottom wall, the assembly fixture includes an assembly platform and a moving platform, and the assembly platform is configured to carry a set of optical components stacked in the first direction, the mobile platform
  • the carrier is adapted to carry the backplane member and is movable in a second direction perpendicular to the first direction such that the top and bottom walls of the backplane member sandwich a set of optical components.
  • the assembly platform comprises a fixing portion, a moving portion and an elastic connecting portion of the elastic connecting fixing portion and the moving portion
  • the fixing portion is for supporting an intermediate portion of the optical element
  • the moving portion is for supporting an edge region of the optical element of the group, and It can be moved toward the fixed portion under the push of the mobile platform.
  • the mobile platform includes a carrying portion and a limiting portion.
  • the carrying portion carries the backing plate component, and the limiting portion prevents the backing plate component from moving away from the optical component.
  • the carrying portion pushes the mobile device.
  • the portion moves toward the fixed portion.
  • the assembly fixture further includes a fixing mechanism for connecting at least two backplane components through the connection mechanism.
  • the fixing mechanism is an automatic locking screw mechanism
  • the connecting structure is a screw
  • the automatic locking screw mechanism is screw-locked by an overlapping portion of adjacent backboard components.
  • the back plate of the backlight module of the present invention is composed of at least two mutually independent back plate components, each of which is horizontally assembled from a side to a group of optical components and passes through
  • the bottom wall and the top wall of the backplane component sandwich a set of optical components, and the assembly process of the backplane can be realized by using an assembly jig, which greatly improves the assembly efficiency of the backlight module.
  • FIG. 1 is a perspective exploded view of a backlight module of the present invention
  • 2A-2D are assembly process diagrams of the assembled backlight assembly of the backlight module of the backlight module of the present invention.
  • FIG. 3 is a flow chart of a method of assembling a backlight module of the present invention.
  • a backlight module 1 includes a set of optical elements 11 and a backing plate 10.
  • a set of optical elements 11 are stacked in a first direction A, the first direction A being a vertical direction.
  • the backing plate 10 includes at least two mutually independent backing plate members 100 for gripping at least one side edge of a set of optical elements 11, respectively.
  • Each backplane element 100 includes a top wall 101, a bottom wall 103, and side walls 102 that connect the top wall 101 and the bottom wall 103; the top wall 101 and the bottom wall 103 together hold a set of optical elements 11.
  • the bottom wall 103 is provided with a projection 1031 which is convex toward the top wall 101.
  • the top wall 101 may also be provided with a convex portion (not shown) that protrudes toward the bottom wall 103; or, only the top wall 101 is provided with a convex portion that protrudes toward the bottom wall 103, and the bottom wall 103 is not provided.
  • the projection 1031 is provided.
  • the backplane 10 includes four "one" shaped backplane components 100. Each backplane element 100 holds a side edge of a set of optical elements 11.
  • the backlight module 1 further includes a connecting mechanism, and adjacent backplane elements 100 partially overlap each other, and the overlapping positions are connected by a connecting mechanism.
  • the screw holes 1032 are formed at the overlapping positions on the back plate member 100, and the adjacent back plate members 100 are connected by screws 12; at this time, the screws 12 are connection mechanisms.
  • the backing plate 11 may be composed of at least two "one"-shaped backplane elements 100, or two "L"-type backplane components, or “one" and “L” type backplane components. Together.
  • connection between the backplane elements 100 may be that the adjacent backplane elements 100 are interconnected, but should not be so limited.
  • the attachment mechanism may also include other necessary auxiliary means, such as a web (not shown).
  • the present invention further provides an assembly jig 2 of the backlight module 1 .
  • the assembly jig 2 includes an assembly platform 21, a moving platform 22, and a fixing mechanism 23.
  • the assembly platform 21 is for carrying a group of optical elements 11 stacked in a first direction A.
  • the mobile platform 22 is configured to carry the backplane component 100 and is capable of moving the backplane component 100 in a second direction B perpendicular to the first direction A such that the top wall 101 and the bottom wall 103 of the backplane component 100 sandwich a set of optical Element 11.
  • the second direction B is a horizontal direction.
  • the fixing mechanism 23 is for connecting the two back plate members 100 through the connecting mechanism 12.
  • the assembly platform 21 includes a moving portion 212 and an elastic connection fixing portion in addition to the fixing portion 211. 211 and an elastic connecting portion 213 of the moving portion 212.
  • the fixing portion 211 is for supporting an intermediate portion of the set of optical elements 11
  • the moving portion 212 is for supporting an edge region of the set of optical elements 11, and the moving portion 212 is movable toward the fixed portion 211 by the pushing of the moving platform 22.
  • the moving portion 212 includes a connecting portion 2121 and a supporting portion 2122.
  • the connecting portion 2121 is elastically connected to the fixing portion 211.
  • the supporting portion 2122 assists in supporting an edge region of the optical element 11; during the movement of the moving platform 22 toward the assembly platform 21, the carrying portion The 221 slides in from the bottom of the support portion 2122 and pushes the connecting portion 2121 to move the moving portion 212 toward the fixed portion 211.
  • the number of moving portions 212 that are elastically coupled to the fixing portion 211 is generally the same as the number of the backing plate members 100.
  • the backing plate 10 includes four backing plate elements 100
  • the assembly platform 21 includes four elastic connecting portions 213 and four moving portions 212 respectively connected to the corresponding elastic connecting portions 213.
  • the number of the sliding platforms 22 is also equal to the number of the back plate members 100, and the sliding platform 22 carries the back plate member 100 and is respectively clamped with a group of optical elements 11. The edges are placed correspondingly.
  • Each mobile platform 22 includes a carrying portion 221 and a limiting portion 222.
  • the carrier portion 221 carries the backplane component 100.
  • the limiting portion 222 prevents the backing plate member 100 from moving in a direction away from the set of optical elements 11.
  • the carrying portion 221 pushes the moving portion 212 of the assembly platform 21 toward the fixed portion 211, and the elastic connecting portion 213 is compressed.
  • a through hole 2211 is formed in the bearing portion 221 at a position corresponding to the screw hole 1032 of the back plate member 100, so that the fixing mechanism 23 passes through and connects the two back plate members 100.
  • the fixing mechanism 23 is an automatic locking screw mechanism, so that the overlapping portion of the adjacent backing plate member 100 is locked by the connecting mechanism 12.
  • the present invention further provides an assembly method for assembling the backlight module 1 by using the assembly jig 2.
  • the assembling method of the backlight module 1 includes the following steps:
  • the first direction A is a vertical direction.
  • a set of optical elements 11 are stacked on the assembly platform 21.
  • the second direction B is a horizontal direction perpendicular to the first direction A.
  • the different mobile platforms 22 are simultaneously or simultaneously driven in a time-series such that the backplane elements 100 respectively grip different edges of a set of optical elements 11.
  • the top wall 101 of the back plate member 100 elastically abuts against the top surface of the optical element 11
  • the bottom wall 103 elastically abuts the bottom surface of the optical element 11 .
  • the boss portion 1031 elastically abuts against the bottom surface of the set of optical elements 11.
  • the process of pushing the backing plate member 100 specifically includes: pushing the moving platform 22 in the second direction B, the moving platform 22 driving the backing plate member 100 to move together; the carrying portion 221 of the moving platform 22 is further sliding from the bottom of the supporting portion 2122 of the moving portion 212 And pushing the connecting portion 2121 to move toward the fixing portion 21; the top wall 101 and the bottom wall 103 of the back plate member 100 are close to the optical element 11 and elastically abut against the top surface and the bottom surface of the optical element 11 respectively to clamp a group One side edge of the optical element 11.
  • the securing mechanism 23 lifts the connecting mechanism 12 to connect the adjacent backing plate members 100 through the connecting mechanism 12 through the through holes 2211 of the moving platform 22.
  • the back plate 10 of the backlight module 1 of the present invention is composed of at least two mutually independent back plate members 100, each of which is horizontally assembled from the side to a group of optical elements 11 and passes through the back plate.
  • the bottom wall 103 and the top wall 101 of the component 100 sandwich a group of optical components 11, and the assembly process of the backplane 10 can be realized by the assembly jig 2, which greatly improves the assembly efficiency of the backlight module 1.

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

Description

背光模组、背光模组的组装方法及组装治具
【技术领域】
本发明涉及一种背光模组、背光模组的组装方法以及背光模组的组装治具。
【背景技术】
一种液晶模组包括背光模组、液晶面板和前框。液晶面板与背光模组层叠放置并通过前框将二者固定连接。
背光模组主要由背板、光学组件、光源和胶框组成。背板、光学组件、胶框依次层叠组装，光学组件通过背板和胶框固定，上述组装通过人工组装的方式进行，组装效率较低。
【发明内容】
本发明主要解决的技术问题是提供一种组装效率较高的背光模组、背光模组的组装方法及组装治具。
为解决上述技术问题，本发明采用的一个技术方案是：一种背光模组，包括一组光学元件、背板和连接机构，一组光学元件层叠放置，背板包括至少两个相互独立的背板元件，用于分别夹持一组光学元件的至少一侧边缘，每一背板元件包括顶壁、底壁以及连接顶壁和底壁的侧壁，底壁包括朝向顶壁凸起的凸出部，一组光学元件被背板元件的顶壁和底壁夹持，凸出部与一组光学元件接触；背板元件之间通过连接机构相互连接。
其中，背板包括四个背板元件，每一背板元件夹持一组光学元件的一侧边缘。
其中，相邻的背板元件之间相互部分重叠，相邻的背板元件相互部分重叠的位置处通过连接机构连接。
其中，连接机构是螺钉。
为解决上述技术问题，本发明采用的另一个技术方案是：一种背光模组的组装方法，背光模组包括一组光学元件和包括至少两个相互独立的背板元件的背板，每一背板元件包括顶壁、底壁以及连接顶壁和底壁的侧壁，背光模组的组装方法包括以下步骤：将一组光学元件沿第一方向层叠放置；沿垂直于第一方向的第二方向推动背板元件，以使背板元件的顶壁和底壁夹持一组光学元件。
其中，底壁包括朝向顶壁凸起的凸出部，沿垂直于第一方向的第二方向推动背板元件，以使背板元件的顶部和底壁夹持一组光学元件的步骤中，凸出部与一组光学元件接触。
其中，背光模组的组装方法进一步包括：连接至少两背板元件。
其中，背板包括四个背板元件。
其中，相邻的背板元件之间相互部分重叠，相邻的背板元件相互重叠的位置处通过连接机构连接。
其中，连接机构是螺钉。
为解决上述技术问题，本发明采用的另一个技术方案是：一种背光模组的组装治具，背光模组包括一组光学元件和包括至少两个相互独立的背板元件的背板，每一背板元件包括顶壁、底壁以及连接顶壁和底壁的侧壁，组装治具包括组装平台和移动平台，组装平台用于承载沿第一方向层叠放置的一组光学元件，移动平台用于承载背板元件并能够沿垂直于第一方向的第二方向上移动背板元件，以使背板元件的顶壁和底壁夹持一组光学元件。
其中，组装平台包括固定部、移动部以及弹性连接固定部和移动部的弹性连接部，固定部用于支撑一组光学元件的中间区域，移动部用于支撑一组光学元件的边缘区域，并可在移动平台的推动下朝向固定部移动。
其中，移动平台包括承载部和限位部，承载部承载背板元件，限位部阻止背板元件朝向远离一组光学元件的方向移动，移动平台朝向组装平台移动的过程中，承载部推动移动部朝向固定部移动。
其中，组装治具进一步包括固定机构，用于通过连接机构连接至少两背板元件。
其中，固定机构为自动锁螺丝机构，所述连接结构为螺丝，所述自动锁螺丝机构以相邻的背板元件的重叠部分进行螺丝锁紧。
本发明的有益效果是：与现有技术相比，本发明背光模组的背板由至少两个相互独立的背板元件组成，每一背板元件自侧面水平组装至一组光学元件并通过背板元件的底壁和顶壁将一组光学元件夹持，背板的组装过程能够采用组装治具实现，大幅提高背光模组的组装效率。
【附图说明】
图1是本发明背光模组的立体拆分图；
图2A~图2D是本发明背光模组的组装治具组装背光模组的组装过程图；
图3是本发明背光模组的组装方法流程图。
【具体实施方式】
下面结合附图和实施例对本发明进行详细说明。
请参照图1，一种背光模组1，包括一组光学元件11和背板10。一组光学元件11沿第一方向A层叠放置，第一方向A为竖直方向。背板10包括至少两个相互独立的背板元件100，用于分别夹持一组光学元件11的至少一侧边缘。
每一背板元件100包括顶壁101、底壁103以及连接顶壁101和底壁103的侧壁102；顶壁101和底壁103共同夹持一组光学元件11。其中，为了便于组装及提高顶壁101和底壁103对一组光学元件11的夹持效果，底壁103设置朝向顶壁101凸起的凸出部1031。实际应用中，顶壁101亦可以设置朝向底壁103凸起的凸出部（未图示）；或者，仅顶壁101设置朝向底壁103凸起的凸出部，而底壁103不设置凸出部1031。
本实施例中，背板10包括四个“一”字型背板元件100。每个背板元件100夹持一组光学元件11的一侧边缘。请一并参照图2，背光模组1进一步包括连接机构，相邻的背板元件100之间相互部分重叠，该重叠位置处通过连接机构连接。例如，背板元件100上重叠位置处开设螺纹孔1032，通过螺钉12将相邻的背板元件100连接起来；此时，螺钉12是连接机构。
除本实施例外，背板11可以由至少两“一”字型背板元件100组成，或者由两“L”型背板元件组成，或者由“一”字型和“L”型背板元件共同组成。
背板元件100之间的连接可以是相邻背板元件100互相连接，但不应受此限制。当不相邻的背板元件100之间互相连接时，连接机构还可以包括其它必要的辅助装置，例如，连接板（未图示）。通过连接机构的设置，使背光模组1作为整体各元件之间的连接更加稳定。
请参照图2A~图2D，本发明进一步提供背光模组1的组装治具2。组装治具2包括组装平台21、移动平台22和固定机构23。组装平台21用于承载沿第一方向A层叠叠放的一组光学元件11。移动平台22用于承载背板元件100并能够沿垂直于第一方向A的第二方向B上移动背板元件100，以使背板元件100的顶壁101和底壁103夹持一组光学元件11。第二方向B为水平方向。固定机构23用于通过连接机构12连接两背板元件100。
为了防止一组光学元件11的底部元件向下翘曲使背板元件100组装过程中发生组装干涉降低产品良率；组装平台21除包括固定部211外，还包括移动部212以及弹性连接固定部211和移动部212的弹性连接部213。固定部211用于支撑一组光学元件11的中间区域，移动部212用于支撑一组光学元件11的边缘区域，并且移动部212可在移动平台22的推动下朝向固定部211移动。
移动部212包括连接部2121和支撑部2122，连接部2121与固定部211弹性连接，支撑部2122辅助支撑一组光学元件11的边缘区域；移动平台22朝向组装平台21移动的过程中，承载部221自所述支撑部2122的底部滑入并推动连接部2121使移动部212朝向固定部211移动。
实际应用中，与固定部211弹性连接的移动部212的数目通常与背板元件100的数目相同。例如，背板10包括四片背板元件100，则组装平台21包括四弹性连接部213和四分别与对应的弹性连接部213连接的移动部212。为了提高采用组装治具2组装背光模组1的组装效率，滑动平台22的数目亦与背板元件100的数目相等，滑动平台22承载背板元件100且分别与一组光学元件11被夹持的边缘相对应放置。
每一移动平台22包括承载部221和限位部222。承载部221承载背板元件100。限位部222阻止背板元件100朝向远离一组光学元件11的方向移动。移动平台22朝向组装平台21移动的过程中，承载部221推动组装平台21的移动部212朝向固定部211移动，弹性连接部213被压缩。承载部221上与背板元件100的螺纹孔1032对应的位置处开设通孔2211，从而使固定机构23通过并连接两背板元件100。
本实施例中，固定机构23为自动锁螺丝机构，使相邻的背板元件100的重叠部分采用连接机构12锁紧。
请一并参照图3，本发明进一步提供一种采用组装治具2组装背光模组1的组装方法。背光模组1的组装方法包括以下步骤：
S10，将一组光学元件11沿第一方向A层叠放置。
本步骤中，光学元件11层叠放置采用人工方式进行，无需卡扣动作，因此不会降低组装效率。第一方向A为竖直方向。一组光学元件11层叠放置于组装平台21上。
S20，沿垂直于第一方向A的第二方向B推动背板元件100，以使背板元件100的顶壁101和底壁103夹持一组光学元件11。
本步骤中，不同的背板元件100分别被各自的移动平台22承接。第二方向B是与第一方向A垂直的水平方向。以四片“一”字型背板元件100组成的背板10为例，四片背板元件100分别承载于各自的移动平台22上，相邻的移动平台22之间呈90°夹角，同时或分时序推动不同的移动平台22，使背板元件100分别夹持一组光学元件11的不同边缘。其中，背板元件100的顶壁101弹性抵接一组光学元件11的顶面，底壁103弹性抵接一组光学元件11的底面。当底壁103设置凸起部1031，则凸起部1031弹性抵接一组光学元件11的底面。
推动背板元件100的过程具体包括：沿第二方向B推动移动平台22，移动平台22带动背板元件100一起移动；移动平台22的承载部221进一步自移动部212的支撑部2122底部滑入并推动连接部2121朝向固定部21移动；背板元件100的顶壁101和底壁103靠近一组光学元件11并分别与一组光学元件11的顶面和底面弹性抵接从而夹持一组光学元件11的一侧边缘。
S30，连接至少两背板元件100。
当背板元件100被安装到位后，固定机构23顶举连接机构12通过移动平台22的通孔2211将相邻的背板元件100通过连接机构12连接。
与现有技术相比，本发明背光模组1的背板10由至少两个相互独立的背板元件100组成，每一背板元件100自侧面水平组装至一组光学元件11并通过背板元件100的底壁103和顶壁101将一组光学元件11夹持，背板10的组装过程能够采用组装治具2实现，大幅提高背光模组1的组装效率。
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 (15)

  1. 一种背光模组，其特征在于，所述背光模组包括一组光学元件、背板和连接机构，所述一组光学元件层叠放置，所述背板包括至少两个相互独立的背板元件，用于分别夹持所述一组光学元件的至少一侧边缘，每一所述背板元件包括顶壁、底壁以及连接顶壁和底壁的侧壁，所述底壁包括朝向所述顶壁凸起的凸出部，所述一组光学元件被所述背板元件的顶壁和底壁夹持，所述凸出部与所述一组光学元件接触；所述背板元件之间通过连接机构相互连接。
  2. 根据权利要求1所述的背光模组，其特征在于，所述背板包括四个所述背板元件，所述每一背板元件夹持所述一组光学元件的一侧边缘。
  3. 根据权利要求2所述的背光模组，其特征在于，相邻的所述背板元件之间相互部分重叠，所述相邻的背板元件相互部分重叠的位置处通过所述连接机构连接。
  4. 根据权利要求3所述的背光模组，其特征在于，所述连接机构是螺钉。
  5. 一种背光模组的组装方法，所述背光模组包括一组光学元件和包括至少两个相互独立的背板元件的背板，每一所述背板元件包括顶壁、底壁以及连接顶壁和底壁的侧壁，其特征在于，所述背光模组的组装方法包括以下步骤：
    将所述一组光学元件沿第一方向层叠放置；
    沿垂直于所述第一方向的第二方向推动所述背板元件，以使所述背板元件的顶壁和底壁夹持所述一组光学元件。
  6. 根据权利要求5所述的背光模组组装方法，其特征在于，所述底壁包括朝向所述顶壁凸起的凸出部，所述沿垂直于所述第一方向的第二方向推动所述背板元件，以使所述背板元件的顶部和底壁夹持所述一组光学元件的步骤中，所述凸出部与所述一组光学元件接触。
  7. 根据权利要求5所述的背光模组组装方法，其特征在于，所述背光模组的组装方法进一步包括：
    连接所述至少两背板元件。
  8. 根据权利要求7所述的背光模组组装方法，其特征在于，所述背板包括四个所述背板元件。
  9. 根据权利要求8所述的背光模组组装方法，其特征在于，相邻的所述背板元件之间相互部分重叠，所述相邻的背板元件相互重叠的位置处通过所述连接机构连接。
  10. 根据权利要求9所述的背光模组组装方法，其特征在于，所述连接机构是螺钉。
  11. 一种背光模组的组装治具，所述背光模组包括一组光学元件和包括至少两个相互独立的背板元件的背板，每一所述背板元件包括顶壁、底壁以及连接顶壁和底壁的侧壁，其特征在于，所述组装治具包括组装平台和移动平台，所述组装平台用于承载沿第一方向层叠放置的所述一组光学元件，所述移动平台用于承载所述背板元件并能够沿垂直于所述第一方向的第二方向上移动所述背板元件，以使所述背板元件的顶壁和底壁夹持所述一组光学元件。
  12. 根据权利要求11所述的背光模组的组装治具，其特征在于，所述组装平台包括固定部、移动部以及弹性连接所述固定部和所述移动部的弹性连接部，所述固定部用于支撑所述一组光学元件的中间区域，所述移动部用于支撑所述一组光学元件的边缘区域，并可在所述移动平台的推动下朝向所述固定部移动。
  13. 根据权利要求12所述的背光模组的组装治具，其特征在于，所述移动平台包括承载部和限位部，所述承载部承载所述背板元件，所述限位部阻止所述背板元件朝向远离所述一组光学元件的方向移动，所述移动平台朝向所述组装平台移动的过程中，所述承载部推动所述移动部朝向所述固定部移动。
  14. 根据权利要求13所述的背光模组的组装治具，其特征在于，所述组装治具进一步包括固定机构，用于通过连接机构连接所述至少两背板元件。
  15. 根据权利要求14所述的背光模组的组装治具，其特征在于，固定机构为自动锁螺丝机构，所述连接机构为螺丝，所述自动锁螺丝机构以相邻的所述背板元件的重叠部分进行螺丝锁紧。
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