WO2013086732A1 - 固定装置及使用所述固定装置的背光模块 - Google Patents

固定装置及使用所述固定装置的背光模块 Download PDF

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Publication number
WO2013086732A1
WO2013086732A1 PCT/CN2011/084112 CN2011084112W WO2013086732A1 WO 2013086732 A1 WO2013086732 A1 WO 2013086732A1 CN 2011084112 W CN2011084112 W CN 2011084112W WO 2013086732 A1 WO2013086732 A1 WO 2013086732A1
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WIPO (PCT)
Prior art keywords
fixing device
positioning post
elastic
light guide
backlight module
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Ceased
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PCT/CN2011/084112
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English (en)
French (fr)
Inventor
张田
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/380,882 priority Critical patent/US9010950B2/en
Publication of WO2013086732A1 publication Critical patent/WO2013086732A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0258—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread using resiliently deformable sleeves, grommets or inserts
    • 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

Definitions

  • the present invention relates to the field of light guide plates, and in particular, to a fixing device for a light guide plate.
  • the liquid crystal display device mainly comprises a liquid crystal panel and a backlight module, and the backlight module is used for providing light required for displaying the image on the liquid crystal panel.
  • the light guide plate in the backlight module is used to guide light to the liquid crystal panel.
  • Local dimming is a commonly used technology in backlight modules. Local dimming means that the backlight module can control different light and dark in different areas.
  • a common method for realizing local dimming is to partially cut the light guide plate or divide the light guide plate and then splicing it, thereby achieving different brightness and darkness control in different areas.
  • the prior art only focuses on the light path or the position of the light source in the backlight module, but the fixing device of the light guide plate is partially cut or split and then spliced, so that the light guide plate is affected by the bad fixing manner. Local dimming effect.
  • An object of the present invention is to provide a fixing device to solve the problem of a fixing device lacking a light guide plate in the prior art.
  • Another object of the present invention is to provide a backlight module to solve the problem of the prior art lacking the fixing device of the light guide plate.
  • the present invention provides a fixing device comprising a positioning post, an insertion portion and at least one elastic portion, the positioning post comprising a first portion and a second portion, the first portion and the second portion being In an inverted T shape, the embedded portion is a threaded cylinder and vertically penetrates into the first portion, and the at least one elastic portion is disposed at at least one end of the positioning post.
  • the elastic portion is provided at a boundary between the first portion and the embedded portion.
  • the elastic portion is provided at a boundary between the first portion and the second portion.
  • the insertion portion is a screw.
  • the present invention further provides a fixing device comprising a positioning post, an inserting portion and at least one elastic portion, the embedding portion vertically penetrating into the positioning post, the at least one elastic portion being disposed on At least one end of the positioning post.
  • the positioning post includes a first portion and a second portion, the first portion and the second portion are in an inverted T shape, and the embedded portion vertically penetrates the first portion In the ministry.
  • the elastic portion is provided at a boundary between the first portion and the embedded portion.
  • the elastic portion is provided at a boundary between the first portion and the second portion.
  • the insert portion is a cylindrical body having a thread.
  • Another object of the present invention is to provide a backlight module to solve the problem of the prior art lacking the fixing device of the light guide plate.
  • the present invention provides a backlight module including a fixing device, the fixing device including a positioning post, an embedding portion and at least one elastic portion, the embedding portion vertically penetrating into the positioning post.
  • the at least one elastic portion is disposed at at least one end of the positioning post.
  • the positioning post includes a first portion and a second portion, the first portion and the second portion have an inverted T shape, and the embedded portion vertically penetrates the first portion In the ministry.
  • the elastic portion is provided at a boundary between the first portion and the embedded portion.
  • the elastic portion is provided at a boundary between the first portion and the second portion.
  • the embedded portion is a cylindrical body having a thread.
  • the present invention solves the problem of the prior art lacking the fixing device of the light guide plate.
  • FIG. 1 is a structural view of a fixing device in accordance with a preferred embodiment of the present invention.
  • FIG. 2 is a schematic view of a fixing device for fixing two light guide plates according to a first embodiment of the present invention
  • FIG. 3 is a schematic view of a fixing device for fixing two light guide plates according to a second embodiment of the present invention.
  • FIG. 4 is a schematic view of a fixing device for reinforcing a structure of a light guide plate according to a preferred embodiment of the present invention.
  • FIG. 1 is a structural diagram of a fixing device according to a preferred embodiment of the present invention.
  • the fixing device includes a positioning post 10, an insertion portion 20 and at least one elastic portion 30.
  • the positioning post 10 includes a first portion 12 and a second portion 14.
  • the first portion 12 and the second portion 14 have an inverted T shape, that is, the two are perpendicular to each other.
  • the positioning post 10 is made by a car cutting method, so that it can be made into a precise shape as needed. It should be noted that the first portion 12 and the second portion 14 may be integrally formed or separately manufactured and then fixed to an inverted T shape.
  • the insert 20 extends vertically into the first portion 12 of the positioning post 10.
  • the embedded portion 20 is a threaded cylinder.
  • the embedded portion 20 is a screw.
  • the fixing device includes two elastic portions 30 respectively disposed at two ends of the positioning post 10 , and more specifically, the elastic portion 30 is sleeved on the first portion 12 and the embedded portion The junction of 20 and the junction of the first portion 12 and the second portion 14. It is to be noted that only one of the elastic portions 30 may be provided at one end of the positioning post 10 as needed.
  • FIG. 2 is a schematic diagram of a fixing device for fixing two light guide plates according to a first embodiment of the present invention.
  • the light guide plates 40, 50 are carried on a bottom plate 60, and have corresponding shapes and can be spliced.
  • the fixing device includes only one elastic portion 30.
  • the light guide plates 40 and 50 are fixed, the light guide plates 40 and 50 are first spliced correspondingly, and then the first portion 12 of the positioning post 10 is passed through the area where the light guide plates 40 and 50 are in common contact.
  • the second portion 14 of the positioning post 10 is fixed on the bottom plate 60 and the elastic portion 30 abuts against the upper surface of at least one of the light guide plates 40, 50.
  • the elastic portion 30 is against the upper surface of the light guide plate 50, and finally the embedded portion 20 passes through the first portion 12 of the positioning post 10, so that the light guide plates 40, 50 are fixed.
  • FIG. 3 is a schematic diagram of a fixing device for fixing two light guide plates according to a second embodiment of the present invention.
  • the light guide plates 42 and 52 respectively have corresponding shapes and can be spliced together.
  • the fixing device in the second embodiment includes two elastic portions 30 respectively disposed at two ends of the first portion 12 of the positioning post 10, so that the spliced light guide plates 42, 52 are located at the Between the elastic portions 30 at both ends of the first portion 12.
  • the light guide plates 42 and 52 are fixed, the light guide plates 42 and 52 are first spliced correspondingly, and then the first portion 12 of the positioning post 10 is passed through the area where the light guide plates 42 and 52 are in common contact.
  • the second portion 14 of the positioning post 10 is fixed to the bottom plate 62 and located at a higher elastic portion 30 against the upper surface of at least one of the light guide plates 42 and 52.
  • the high elastic portion 30 abuts against the upper surface of the light guide plate 52
  • the lower elastic portion 30 abuts against the upper surface of the bottom plate 62
  • the embedded portion 20 passes through the first portion of the positioning post 10. 12, the light guide plates 42, 52 are fixed.
  • FIG. 4 is a schematic diagram of a fixing device for reinforcing a light guide plate structure according to a preferred embodiment of the present invention.
  • a light guide plate 44 is carried on a bottom plate 64.
  • the bottom area A of the light guide plate 44 is cut up by a portion of the triangular body, so the bottom area A The structure is more fragile.
  • the first portion 12 of the positioning post 10 is first passed through the left side of the bottom region A such that the second portion 14 of the positioning post 10 is fixed to the bottom plate 64.
  • the elastic portion 30 abuts against the upper surface of the light guide plate 44, and finally the embedded portion 20 passes through the first portion 12 of the positioning post 10 to reinforce the structure on the left side of the bottom portion A.
  • the fixing device of the present invention may be disposed on the right side of the bottom portion A to reinforce the structure on the right side of the bottom portion A in the same manner as the above-described fixing device of the present invention disposed on the left side of the bottom portion A This is not to be repeated.
  • the present invention also provides a backlight module including the fixing device provided by the present invention. Since the fixing device has been described in detail above, it will not be described herein.
  • the fixing device of the present invention is not only compact in structure but also has a function of high positioning accuracy, and the elastic portion 30 can also reduce the impact of the fixing portion and improve the stress concentration.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种固定装置及使用所述固定装置的背光模块，所述固定装置包括一定位柱（10）、一嵌入部（20）以及至少一弹性部（30），所述嵌入部（20）垂直穿入所述定位柱（10）中，所述至少一弹性部（30）设置于所述定位柱（10）的至少一端，所述固定装置不仅结构紧凑且具有高定位精度的功能，所述弹性部（30）还能减少固定处的冲击及改善应力集中的问题。

Description

固定装置及使用所述固定装置的背光模块 技术领域
本发明涉及导光板技术领域，特别涉及一种用于导光板的固定装置。
 背景技术
液晶显示装置主要包括液晶面板及背光模块，背光模块是用于提供液晶面板显示影像时所需的光线。背光模块中的导光板则是用于导引光线至液晶面板。
局部调光(local dimming)是目前背光模块中常用的技术。局部调光是指背光模块可在不同区域作不同亮暗的控制。实现局部调光常用的方法是对导光板进行局部裁切或是将导光板分割后再拼接，藉此达到在不同区域作不同亮暗的控制。
然而现有技术都只着重在光线路径或是背光模块中光源的设置位置，却显少提出导光板局部裁切或是分割后再拼接的固定装置，使得导光板因为不良的固定方式而影响到局部调光效果。
因此，需要对上述缺乏导光板的固定装置的问题提出解决方法。
 技术问题
本发明的一个目的在于提供一种固定装置，以解决现有技术中缺乏导光板的固定装置的问题。
本发明的另一个目的在于提供一种背光模块，以解决现有技术中缺乏导光板的固定装置的问题。
 技术解决方案
本发明提供了一种固定装置，包括一定位柱、一嵌入部以及至少一弹性部，所述定位柱包括一第一部及一第二部，所述第一部及所述第二部呈倒T形状，所述嵌入部为一具有螺纹的柱体且垂直穿入所述第一部中，所述至少一弹性部设置于所述定位柱的至少一端。
在本发明的固定装置中，所述弹性部设置于所述第一部及所述嵌入部的交界处。
在本发明的固定装置中，所述弹性部设置于所述第一部及所述第二部的交界处。
在本发明的固定装置中，所述嵌入部为一螺丝。
为解决上述问题，本发明还提供了一种固定装置，包括一定位柱、一嵌入部以及至少一弹性部，所述嵌入部垂直穿入所述定位柱中，所述至少一弹性部设置于所述定位柱的至少一端。
在本发明的固定装置中，所述定位柱包括一第一部及一第二部，所述第一部及所述第二部呈倒T形状，所述嵌入部垂直穿入所述第一部中。
在本发明的固定装置中，所述弹性部设置于所述第一部及所述嵌入部的交界处。
在本发明的固定装置中，所述弹性部设置于所述第一部及所述第二部的交界处。
在本发明的固定装置中，所述嵌入部为一具有螺纹的柱体。
本发明的另一个目的在于提供一种背光模块，以解决现有技术中缺乏导光板的固定装置的问题。
为解决上述问题，本发明提供了一种背光模块，其包括一固定装置，所述固定装置包括一定位柱、一嵌入部以及至少一弹性部，所述嵌入部垂直穿入所述定位柱中，所述至少一弹性部设置于所述定位柱的至少一端。
在本发明的背光模块中，所述定位柱包括一第一部及一第二部，所述第一部及所述第二部呈倒T形状，所述嵌入部垂直穿入所述第一部中。
在本发明的背光模块中，所述弹性部设置于所述第一部及所述嵌入部的交界处。
在本发明的背光模块中，所述弹性部设置于所述第一部及所述第二部的交界处。
在本发明的背光模块中，所述嵌入部为一具有螺纹的柱体。
 有益效果
本发明相对于现有技术，解决了现有技术中缺乏导光板的固定装置的问题。
 附图说明
图1为根据本发明较佳实施例的固定装置结构图；
图2为根据本发明第一实施例的固定装置用于固定两块导光板的示意图；
图3为根据本发明第二实施例的固定装置用于固定两块导光板的示意图；
图4为根据本发明较佳实施例的固定装置用于加强导光板结构的示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。
请参阅图1，其为根据本发明较佳实施例的固定装置结构图。
所述固定装置包括一定位柱10、一嵌入部20以及至少一弹性部30。
所述定位柱10包括一第一部12及一第二部14，所述第一部12及所述第二部14呈倒T形状，即两者互相垂直。所述定位柱10采用车切方式制成，因此能视需要制成精准的形状。要说明的是，所述第一部12及所述第二部14可为一体成型或是单独制造后再将两者固接成倒T形状。
所述嵌入部20垂直穿入所述定位柱10的第一部12中。较佳而言，所述嵌入部20为一具有螺纹的柱体。于一实施例中，所述嵌入部20为一螺丝。
本实施例中，固定装置包括两个弹性部30，分别设置于所述定位柱10的两端，更明确而言，所述弹性部30套设于所述第一部12及所述嵌入部20的交界处及所述所述第一部12及所述第二部14的交界处。要说明的是，可以视需要而仅设置其中一个弹性部30在所述定位柱10的一端。
请参阅图2，其为根据本发明第一实施例的固定装置用于固定两块导光板的示意图。如图所示，导光板40、50是承载在一底板60上，分别具有相对应的形状而能拼接而成。
本实施例中，所述固定装置仅包括一个弹性部30。固定所述导光板40、50时，首先将所述导光板40、50对应地拼接，然候将所述定位柱10的第一部12穿过所述导光板40、50共同接触的区域，使得所述定位柱10的第二部14固定在所述底板60上且所述弹性部30抵靠住所述导光板40、50至少一者的上表面，于本实施例中，所述弹性部30是抵靠住所述导光板50的上表面，最后嵌入部20穿过所述定位柱10的第一部12，使得所述导光板40、50完成固定。
请参阅图3，其为根据本发明第二实施例的固定装置用于固定两块导光板的示意图。如图所示，导光板42、52分别具有相对应的形状而能拼接而成。
与第一实施例不同的是第二实施例中的固定装置包括两个分别设置在所述定位柱10的第一部12两端的弹性部30，因此拼接的导光板42、52是位于所述第一部12两端的弹性部30之间。
固定所述导光板42、52时，首先将所述导光板42、52对应地拼接，然候将所述定位柱10的第一部12穿过所述导光板42、52共同接触的区域，使得所述定位柱10的第二部14固定在所述底板62上且位于较高的弹性部30抵靠住所述导光板42、52至少一者的上表面，于本实施例中，位于较高的弹性部30是抵靠住所述导光板52的上表面，位于较低的弹性部30是抵靠住所述底板62的上表面，最后嵌入部20穿过所述定位柱10的第一部12，使得所述导光板42、52完成固定。
请参阅图4，其为根据本发明较佳实施例的固定装置用于加强导光板结构的示意图。如图所示，一导光板44是承载在一底板64上，为了达到局部调光，所述导光板44的底部区域A被往上裁切掉三角体的部分，因此所述底部区域A的结构较为脆弱。
加强所述底部区域A的结构时，首先将所述定位柱10的第一部12穿过所述底部区域A的左侧，使得所述定位柱10的第二部14固定在所述底板64上且所述弹性部30抵靠住所述导光板44的上表面，最后嵌入部20穿过所述定位柱10的第一部12，加强所述底部区域A左侧的结构。
此外，可以在所述底部区域A的右侧设置本发明的固定装置，加强所述底部区域A右侧的结构，其过程与上述在所述底部区域A的左侧设置本发明的固定装置相同，此不多加赘述。
本发明还提供一种背光模块，其包括本发明提供的固定装置，鉴于该固定装置在上文已有详细的描述，此处不再赘述。
本发明的固定装置不仅结构紧凑且具有高定位精度的功能，所述弹性部30还能减少固定处的冲击及改善应力集中的问题。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
 本发明的实施方式
工业实用性
序列表自由内容

Claims (14)

  1. 一种固定装置，包括一定位柱、一嵌入部以及至少一弹性部，所述定位柱包括一第一部及一第二部，所述第一部及所述第二部呈倒T形状，所述嵌入部为一具有螺纹的柱体且垂直穿入所述第一部中，所述至少一弹性部设置于所述定位柱的至少一端。
  2. 根据权利要求1所述的固定装置，其中所述弹性部设置于所述第一部及所述嵌入部的交界处。
  3. 根据权利要求1所述的固定装置，其中所述弹性部设置于所述第一部及所述第二部的交界处。
  4. 根据权利要求1所述的固定装置，其中所述嵌入部为一螺丝。
  5. 一种固定装置，包括一定位柱、一嵌入部以及至少一弹性部，所述嵌入部垂直穿入所述定位柱中，所述至少一弹性部设置于所述定位柱的至少一端。
  6. 根据权利要求5所述的固定装置，其中所述定位柱包括一第一部及一第二部，所述第一部及所述第二部呈倒T形状，所述嵌入部垂直穿入所述第一部中。
  7. 根据权利要求6所述的固定装置，其中所述弹性部设置于所述第一部及所述嵌入部的交界处。
  8. 根据权利要求6所述的固定装置，其中所述弹性部设置于所述第一部及所述第二部的交界处。
  9. 根据权利要求5所述的固定装置，其中所述嵌入部为一具有螺纹的柱体。
  10. 一种背光模块，包括一固定装置，所述固定装置包括一定位柱、一嵌入部以及至少一弹性部，所述嵌入部垂直穿入所述定位柱中，所述至少一弹性部设置于所述定位柱的至少一端。
  11. 根据权利要求10所述的背光模块，其中所述定位柱包括一第一部及一第二部，所述第一部及所述第二部呈倒T形状，所述嵌入部垂直穿入所述第一部中。
  12. 根据权利要求11所述的背光模块，其中所述弹性部设置于所述第一部及所述嵌入部的交界处。
  13. 根据权利要求11所述的背光模块，其中所述弹性部设置于所述第一部及所述第二部的交界处。
  14. 根据权利要求10所述的背光模块，其中所述嵌入部为一具有螺纹的柱体。
PCT/CN2011/084112 2011-12-15 2011-12-16 固定装置及使用所述固定装置的背光模块 Ceased WO2013086732A1 (zh)

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CN103277747A (zh) * 2013-04-25 2013-09-04 深圳市华星光电技术有限公司 背光模组及其膜片定位结构

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