WO2014000321A1 - 液晶显示装置及用于锁附pcb的固定件 - Google Patents

液晶显示装置及用于锁附pcb的固定件 Download PDF

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Publication number
WO2014000321A1
WO2014000321A1 PCT/CN2012/078335 CN2012078335W WO2014000321A1 WO 2014000321 A1 WO2014000321 A1 WO 2014000321A1 CN 2012078335 W CN2012078335 W CN 2012078335W WO 2014000321 A1 WO2014000321 A1 WO 2014000321A1
Authority
WO
WIPO (PCT)
Prior art keywords
pcb
insulating
protrusion
fixing piece
liquid crystal
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/CN2012/078335
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English (en)
French (fr)
Inventor
唐国富
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 US13/578,165 priority Critical patent/US20140009897A1/en
Publication of WO2014000321A1 publication Critical patent/WO2014000321A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H05K7/12—Resilient or clamping means for holding component to structure
    • 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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1417—Mounting supporting structure in casing or on frame or rack having securing means for mounting boards, plates or wiring boards
    • H05K7/142—Spacers not being card guides
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/54—Flexible member is joint component

Definitions

  • the present invention relates to the field of liquid crystal display, and more particularly to a liquid crystal display device and a fixing member for locking a PCB. ⁇ Background technique ⁇
  • the liquid crystal control signal of the liquid crystal display is input signal through the PCB. Since the frame of the liquid crystal display is narrow, the PCB is generally placed on the back of the backlight module (ie, the back panel), and the common PCB fixing method is fixed by a screw lock.
  • the liquid crystal display includes: a liquid crystal panel 10 and a backlight module.
  • the PCB 30 for controlling the liquid crystal is disposed on the back plate 20 of the backlight module, and the liquid crystal panel 10 and the PCB 30 are connected by a COF 34 (flip-coated film).
  • the PCB 30 is directly attached to the back plate 20 by using a screw 31.
  • the disadvantage of using the screw 31 fixing method is that the diameter of the screw cap occupies the space of the PCB 30, and the space occupied by the screw is as shown in the oblique line region 7 in the figure, and the oblique line region 7 is generally larger than the diameter of the screw cap, and The slash area 7 has not been able to Layout other lines.
  • the line 33 needs to bypass the entire slash area 7 to avoid the screw cap contacting the line and affecting the normal operation of the PCB 30.
  • the copper is usually grounded in the slash area.
  • the copper cloth also enlarges the area of the oblique line region, which is disadvantageous to the reduction of the area of the PCB 30, thereby increasing the manufacturing cost of the PCB 30, and is also disadvantageous for the compact optimization of the internal structure of the liquid crystal display.
  • the technical problem to be solved by the present invention is to provide a low-cost liquid crystal display device and a fixing member for locking the PCB.
  • a liquid crystal display device comprising: a back plate, a PCB fixed on the back plate, a fixing member for fixing the PCB, and a cover plate for covering the PCB;
  • the fixing member comprises: a trunk, two insulating spacers respectively disposed at two ends of the trunk, The insulating baffle on the upper ends of the trunk is an insulating baffle having a soft elasticity, and the fixing member passes through the
  • the fixing member is provided with a protrusion with respect to one end of the cover, the protrusion
  • the top end of the fixing member is provided with an annular flange having a diameter larger than the protrusion; the other end of the fixing member is also provided with a protrusion, and the protrusion is a portion of the trunk protruding from the insulating strip.
  • a liquid crystal display device comprising: a backboard, a PCB fixed on the backboard, and a fixing member for fixing the PCB;
  • the fixing member comprises: a trunk, a setting In the limiting portion at both ends of the trunk, the limiting portion is made of an insulating material.
  • the limiting portion is an insulating baffle respectively disposed at two ends of the trunk, and the insulating baffle of at least one end of the trunk is an insulating baffle having a soft elasticity, and the fixing member passes through the PCB and The backboard and the backplane and the PCB are respectively locked from both ends by the insulating strips at the two ends.
  • the end of the fixing member is inserted into the PCB fixing hole, and the insulating baffle is soft and elastic.
  • the insulating baffle elastically deforms through the PCB fixing hole and the mounting hole of the back plate, when the mounting hole of the back plate is exceeded.
  • the insulating strip recovers the shape, and the diameter is larger than the diameter of the mounting holes of the PCB fixing hole and the back board, and the PCB and the back board are located between the insulating sheets at both ends of the fixing member.
  • the insulating strips at both ends of the fixing member trunk are all insulating sheets with soft elasticity. Both ends are provided with a soft and elastic insulating cover so that the fixed PCB and the back plate have a certain buffer and will not be locked.
  • the backboard is further provided with a cover plate for covering the PCB
  • the fixing member is provided with a protrusion with respect to one end of the cover plate.
  • the protrusion at one end of the fixing member forms a limiting structure, and the blocking cover plate is pressed against the components on the PCB by deformation, and the protrusion can facilitate the removal and installation of the fixing member.
  • the top end of the protrusion is provided with an annular protrusion having a diameter larger than the protrusion.
  • the use of the annular flange makes it easier to remove the fixture.
  • the other end of the fixing member is also provided with a protrusion, and the protrusion is a portion of the trunk protruding from the insulating cover.
  • a protrusion is also provided at the other end, and a chamfer is provided on the protrusion to facilitate The fixture is easier to insert into the PCB as well as the backplane.
  • the fixing member is integrally made of a rubber material.
  • the rubber has good elasticity and flexibility.
  • the trunk and the insulation bracket of the fixing member can be separately manufactured and fixed together, but the fixing member can reduce the manufacturing process.
  • a fixing member for locking a PCB comprising: a trunk, a limiting portion disposed at two ends of the trunk, wherein the limiting portion is made of an insulating material.
  • the limiting portion is an insulating baffle respectively disposed at two ends of the trunk, and the insulating baffle of at least one end of the trunk is an insulating baffle having a soft elasticity, and the fixing member passes through the PCB and The position to be fixed and the position of the PCB and its to be fixed are respectively locked from both ends by the insulating strips at the two ends.
  • the fixing of the PCB of the liquid crystal display device as an example, when the PCB is assembled and fixed, the end of the fixing member is inserted into the PCB fixing hole, and the insulating blocking piece has soft elasticity, and the insulating blocking piece is elastically deformed through the PCB fixing hole and the back when inserted.
  • the insulating strip recovers the shape, and the diameter is larger than the diameter of the mounting hole of the PCB fixing hole and the back board, and the PCB and the back board are located at the two ends of the fixing member. Between the pieces.
  • the limiting portions at both ends of the fixing member of the fixing PCB are made of an insulating material, the wiring on the PCB in the area covered by the limiting portion can still be wired, and only the fixing hole needs to be bypassed, and at the same time, the insulation is used.
  • the limiting portion of the material can eliminate the need for copper cloth design near the fixing hole, and also saves the area of the PCB, which is advantageous for reducing the width of the PCB, saving the production cost of the liquid crystal display device, and optimizing the structural design of the liquid crystal display device.
  • FIG. 1 is a schematic structural view of a PCB locking method in a conventional liquid crystal display device
  • FIG. 2 is a schematic view of a copper cloth and a wiring structure which need to be made on a PCB by using a screw to lock a PCB in the prior art
  • FIG. 3 is a schematic structural view of a fixed PCB using a fixing member in an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a wiring structure on a PCB when a PCB is attached using a fixing member in an embodiment of the present invention
  • Figure 5 is a structural view of a fixing member in an embodiment of the present invention.
  • Figure 6 is another modified structural view of the fixing member in the embodiment of the present invention.
  • Figure 7 is a structural view of a fixing member having a single insulating flap in the embodiment of the present invention.
  • COF COF
  • 320 trunk, 321, first insulation flap, 322, second insulating strip, 323, projection, 324, projection.
  • a liquid crystal display device includes: a liquid crystal panel 10 and a backlight module.
  • the PCB 30 for driving the liquid crystal panel 10 is disposed on the back panel 20 of the backlight module, and the PCB 30 and the liquid crystal panel are disposed. 10 is connected by COF 34; PCB 30 is fixed to the back plate 20 of the backlight module through the fixing member 32.
  • the fixing member 32 includes a trunk 320 and a limiting portion disposed at both ends of the trunk (first insulation) The blocking piece 321 and the second insulating blocking piece 322). As shown in FIG.
  • the limiting portion is made of an insulating material, so that the PCB 30 can still be wired in the area covered by the limiting portion, and the line 33 only needs to bypass the fixing hole, and the limiting portion of the fixing member 32 can be Covering the line 33;
  • the limiting portion made of the insulating material can eliminate the need for the copper plating design near the fixing hole of the PCB 30, and also saves the area of the PCB, which is advantageous for reducing the width of the PCB and saving the production cost of the liquid crystal display device.
  • the internal structural design of the liquid crystal display device is optimized, the components of the liquid crystal display device are smaller, and the configuration between the components is more compact and reasonable.
  • the limiting portions disposed at the two ends of the trunk 320 of the fixing member 32 are a first insulating blocking piece 321 and a second insulating blocking piece 322, respectively, and the distance between the two first insulating blocking pieces 321 is less than two The distance between the two insulating segments 322.
  • the first insulating spacer 321 and the second insulating spacer 322 are made of a material having soft elasticity.
  • the first insulating strip 321 and the second insulating strip 322 are shown Due to the soft elasticity, the extrusion is elastically deformed during insertion, and the hole can be fixed through the PCB 30 and the mounting hole of the back plate 20.
  • the fixing member penetrates beyond the thickness of the mounting hole of the back plate 20
  • the first insulating member 321 and the second The insulating strip 322 returns to its original shape.
  • the diameter is larger than the diameter of the fixing hole of the PCB 30 and the mounting hole of the back board 20.
  • the PCB 30 and the back board 20 are located between the insulating sheets at both ends of the fixing member, that is, the fixing member 32 passes through.
  • the PCB 30 and the back board 20 are respectively locked together from the two ends by the insulating strips (the first insulating strip 321 and the second insulating strip 322) at both ends.
  • the fixing member 32 can be directly assembled by hand, and no additional tools are required.
  • the fixing member 32 may be provided with a soft and elastic insulating flap at one end, and the other end may not be soft and elastic, because only one end of the fixing member needs to be inserted during installation, and the other end is not subjected to Squeeze deformation.
  • the insulating strips at both ends of the fixing member 32 are soft and elastic.
  • the fixed PCB 30 and the backing plate 20 have a certain cushioning and are not completely locked.
  • the trunk 320 it is preferable for the trunk 320 to have a certain elasticity.
  • the reaction force of the COF 34 also has a lateral pulling force on the PCB 30.
  • the fixing member 32 has soft elasticity and elasticity, it can be elastically deformed, so that the pulling force of a part of the COF 34 can be absorbed, so that the COF is not in a tight state, the friction of the COF can be reduced, and the COF is prevented from being scratched by the foreign matter and the circuit is broken. If the picture is inferior, the elastic fixing member 32 can prevent the COF from being damaged when it is laterally pulled by an external force, and does not need to lengthen the length of the COF, thereby saving production costs.
  • the fixing member of the embodiment is integrally formed by using a rubber material, and the rubber has good elasticity and flexibility.
  • the trunk 320 and the insulating bracket of the fixing member 32 can be separately manufactured and fixed together, but the fixing member can be integrally manufactured to reduce the production.
  • the fixing member made of rubber material is much cheaper than the screw made of metal material, which can save the production cost of the liquid crystal display device.
  • the fixing member 32 may be provided only with the first insulating strip 321 and the second insulating strip may be eliminated, but the second insulating strip may be disposed at the first insulating In the event that the flap 321 is damaged, the fixing member 32 can still have a locking effect.
  • the insertion end of the fixing member is provided with a protrusion 323, and the protrusion 323 is the fixing.
  • the trunk 320 of the member 32 protrudes from the first insulating strip 321 and the second insulating strip 322, and the protrusion 323 is further provided with a chamfer, which facilitates the insertion of the fixing member 32 into the PCB and the back. Inside the hole of the plate.
  • a cover plate (not shown) for covering the PCB 30 is further disposed on the back plate 20 of the liquid crystal display device.
  • a projection 324 is also provided at the non-insertion end of the fixing member 32.
  • the protrusion 324 is used to form a limiting structure to block the components of the cover plate from being deformed against the PCB 30 to protect the safety of the PCB 30.
  • the protrusion 324 can facilitate the removal and installation of the fixing member 32.
  • the top end of the projection 324 is also provided with an annular ledge 325 having a larger diameter than the projection 324. The annular projection 325 makes it easier to remove the retaining member 32.
  • the fixing member can not only lock the PCB disposed on the backboard, but also the PCB disposed at other positions on the liquid crystal display device. If the PCB is disposed on the back cover of the liquid crystal display device, The fixing member of the present invention can also be used.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Insulating Bodies (AREA)

Description

液晶显示装置及用于锁附 PCB的固定件
【技术领域】
本发明涉及液晶显示领域， 更具体的说， 涉及一种液晶显示装置及用于锁 附 PCB的固定件。 【背景技术】
液晶显示器的液晶控制信号是通过 PCB 来输入信号， 由于液晶显示器的 边框较窄， PCB—般放置于背光模组后背 （即背板上）， 常见的 PCB 固定方式 采用螺丝锁附固定。
如图 1示， 液晶显示器包括： 液晶面板 10以及背光模组， 用于控制液晶 的 PCB30设置在背光模组的背板 20上，液晶面板 10与 PCB30之间通过 COF34 (覆晶薄膜 )进行连接， PCB30使用螺丝 31直接锁附固定在所述背板 20上。 如图 2所示， 使用螺丝 31固定方式的缺点为螺丝帽的直径占用 PCB30的空间， 其占用的空间如图示中的斜线区域 7,斜线区域 7—般比螺丝帽直径大， 并且斜 线区域 7已不可铺设 ( Layout )其他线路， 线路 33需要绕过整个斜线区域 7才 能避免螺丝帽与线路接触而影响到 PCB30的正常工作， 另外， 通常还会在斜线 区域布铜接地， 此时布铜也会扩大斜线区域的面积， 进而不利于 PCB30的面积 缩小， 进而增加 PCB30的制造成本， 同时也不利于液晶显示器内部结构的紧凑 优化。
【发明内容】
本发明所要解决的技术问题是提供一种成本低的液晶显示装置及用于锁附 PCB的固定件。
本发明的目的是通过以下技术方案来实现的： 一种液晶显示装置， 包括： 背板、 固定在背板上的 PCB、 用于固定 PCB 的固定件以及用于遮盖所述 PCB 的盖板； 所述固定件包括： 一主干、 分别设置在主干两端的两层绝缘挡片， 所 述主干上两端的绝缘挡片为具有柔软弹性的绝缘挡片， 所述固定件穿过所述
PCB以及背板并通过所述两端的绝缘挡片分别从两端将所述背板以及 PCB锁附 在一起； 所述固定件相对于所述盖板的一端设置有凸起， 所述凸起的顶端设置 有一直径大于所述凸起的环形凸沿； 所述固定件的另一端也设置有凸起， 所述 凸起为所述主干凸出于所述绝缘挡片的部分。
本发明的目的还可以通过以下技术方案来实现： 一种液晶显示装置， 包括： 背板、 固定在背板上的 PCB以及用于固定 PCB的固定件； 所述固定件包括： 一 主干、 设置在主干两端的限位部， 所述限位部为绝缘材料制作而成。
优选的， 所述限位部为分别设置在所述主干两端的绝缘挡片， 所述主干上 至少一端的绝缘挡片为具有柔软弹性的绝缘挡片， 所述固定件穿过所述 PCB以 及背板并通过所述两端的绝缘挡片分别从两端将所述背板以及 PCB 锁附在一 起。 当对 PCB进行组装固定时， 固定件的末端插入 PCB固定孔， 绝缘挡片由于 具有柔软弹性， 插入时绝缘挡片弹性变形通过 PCB固定孔以及背板的安装孔， 当超过背板安装孔的厚度时， 绝缘挡片恢复形状， 此时直径大于 PCB固定孔及 背板的安装孔的直径， 此时 PCB及背板位于固定件两端的绝缘挡片之间。
优选的， 所述固定件主干的两端的绝缘挡片均为具有柔软弹性的绝缘挡片。 两端都是设置柔软弹性的绝缘挡片使得固定后的 PCB及背板具有一定的緩沖， 不会锁死。
优选的， 所述背板上还设置有用于遮盖所述 PCB的盖板， 所述固定件相对 于所述盖板的一端设置有凸起。 利用固定件一端的凸起形成一个限位结构， 阻 挡盖板因变形而抵压到 PCB上的元器件， 同时， 凸起可以方便对固定件的取出 和安装。
优选的， 所述凸起的顶端设置有一直径大于所述凸起的环形凸沿。 利用环 形凸沿可以更方便取出固定件。
优选的， 所述固定件的另一端也设置有凸起， 所述凸起为所述主干凸出于 所述绝缘挡片的部分。 在另一端也设置凸起， 并可在凸起上设置倒角， 以方便 固定件更容易插入 PCB以及背板。
优选的， 所述固定件为橡胶材料一体制作而成。 橡胶具有良好的弹性及柔 韧性， 固定件的主干与绝缘挡片可以分开制作再固定到一起， 但固定件一体制 作可以减少制作工艺。
一种用于锁附 PCB的固定件， 所述固定件包括： 一主干、 设置在主干两端 的限位部， 所述限位部为绝缘材料制作而成。
优选的， 所述限位部为分别设置在所述主干两端的绝缘挡片， 所述主干上 至少一端的绝缘挡片为具有柔软弹性的绝缘挡片， 所述固定件穿过所述 PCB及 其待固定的位置并通过所述两端的绝缘挡片分别从两端将所述 PCB及其待固定 的位置锁附在一起。 以对液晶显示装置的 PCB的固定为例， 当对 PCB进行组装 固定时， 固定件的末端插入 PCB固定孔， 绝缘挡片由于具有柔软弹性， 插入时 绝缘挡片弹性变形通过 PCB固定孔以及背板的安装孔， 当超过背板安装孔的厚 度时， 绝缘挡片恢复形状， 此时直径大于 PCB固定孔及背板的安装孔的直径， 此时 PCB及背板位于固定件两端的绝缘挡片之间。
本发明由于固定 PCB的固定件两端的限位部是使用绝缘材料制作而成的， 因而 PCB上在限位部覆盖的区域仍然可以进行布线， 只需要绕过固定孔即可， 同时， 使用绝缘材料制作的限位部可以不必要再在固定孔附近进行布铜设计， 也节省了 PCB的面积，有利于缩小 PCB的宽度，节约液晶显示装置的生产成本， 优化液晶显示装置内部的结构设计。
【附图说明】
图 1是现有液晶显示装置中 PCB锁附方式的结构示意图，
图 2是现有技术中使用螺丝锁附 PCB需要在 PCB上做的布铜及布线结构示 意图，
图 3是本发明实施例中使用固定件进行固定 PCB的结构示意图，
图 4是本发明实施例中使用固定件锁附 PCB时在 PCB上的布线结构示意 图，
图 5是本发明实施例中固定件的结构筒图，
图 6是本发明实施例中固定件的另一改进结构筒图，
图 7是本发明实施例中具有单个绝缘挡片的固定件的结构筒图。
其中： 10、 液晶面板， 20、 背板， 30、 PCB , 31、 螺釘， 32、 固定件， 34、
COF, 320、 主干， 321、 第一绝缘挡片， 322、 第二绝缘挡片， 323、 凸起， 324、 凸起。
【具体实施方式】
下面结合附图和较佳的实施例对本发明作进一步说明。
如图 3所示为本发明的一个具体实施例， 液晶显示装置包括： 液晶面板 10 以及背光模组， 用于驱动液晶面板 10的 PCB30设置在背光模组的背板 20上， PCB30与液晶面板 10之间通过 COF34进行连接； PCB30通过固定件 32固定到 背光模组的背板 20上， 如图 5所示， 固定件 32包括一主干 320以及设置在主 干两端的限位部 （第一绝缘挡片 321以及第二绝缘挡片 322 )。 如图 4所示， 限 位部由绝缘材料制作而成， 因而 PCB30上在限位部覆盖的区域仍然可以进行布 线， 线路 33只需要绕过固定孔即可， 固定件 32的限位部可覆盖线路 33; 同时， 使用绝缘材料制作的限位部可以不必要再在 PCB30 的固定孔附近进行布铜设 计， 也节省了 PCB的面积， 有利于缩小 PCB的宽度， 节约液晶显示装置的生产 成本， 优化液晶显示装置内部的结构设计， 使的液晶显示装置的组件体积更小， 组件之间的配置更紧凑合理。
如图 5所示， 设置在固定件 32主干 320两端的限位部分别是第一绝缘挡片 321以及第二绝缘挡片 322, 两个第一绝缘挡片 321之间的距离小于两个第二绝 缘挡片 322之间的距离。 第一绝缘垫片 321以及第二绝缘挡片 322为具有柔软 弹性的材料制成， 如图 3所示， 当对 PCB30进行组装固定时， 固定件 32的末端 插入 PCB30固定孔， 结合图 5所示， 第一绝缘挡片 321以及第二绝缘挡片 322 由于具有柔软弹性， 插入时挤压发生弹性变形而可以通过 PCB30固定孔以及背 板 20的安装孔， 当固定件深入超过背板 20的安装孔的厚度时， 第一绝缘挡片 321以及第二绝缘挡片 322恢复原来形状， 此时直径大于 PCB30的固定孔及背 板 20的安装孔的直径，此时 PCB30及背板 20位于固定件两端的绝缘挡片之间， 即固定件 32穿过所述 PCB30以及背板 20并通过所述两端的绝缘挡片 （第一绝 缘挡片 321以及第二绝缘挡片 322 )分别从两端将所述背板 20以及 PCB30锁附 在一起。 这样固定件 32可以直接人工组装即可， 不需要额外的工具。
在满足安装 PCB30的情况下，固定件 32可以只在一端设置柔软弹性的绝缘 挡片， 而另一端可以不是柔软弹性的， 因为在安装时只需要插入固定件的一端， 而另一端不会受到挤压变形。 但在本实施例中， 固定件 32两端的绝缘挡片均是 具有柔软弹性的， 这样， 如图 3所示， 使得固定后的 PCB30及背板 20具有一定 的緩沖， 不会完全锁死。 当然， 对于主干 320来说最好也具有一定弹性， 当液 晶显示装置发生振动时， 比如振动试验， 振动过程中， 当 COF34受液晶面板 10 的拉力时， COF34的反作用力也会对 PCB30有横向拉力， 由于固定件 32具有 柔软弹性， 可以弹性变形， 因此可以吸收部份 COF34的拉力， 从而 COF不会处 于紧绷状态，可以减少 COF的摩擦，避免 COF被异物摩擦刮伤造成电路失效引 起亮线等画面不良现象， 通过弹性的固定件 32可以使得 COF在受外力而产生 横向拉扯时不会损坏， 也不需要加长 COF的长度， 节约了生产成本。
本实施例的固定件采用橡胶材料一体成形制作， 橡胶具有良好的弹性及柔 韧性， 当然固定件 32的主干 320与绝缘挡片也可以分开制作再固定到一起， 但 固定件一体制作可以减少制作工艺， 另外， 橡胶材料制作的固定件要比金属材 料制作的螺釘要便宜很多， 可节约液晶显示装置的生产成本。
在满足锁附 PCB30的情况下，如图 7所示， 固定件 32可以只设置第一绝缘 挡片 321 , 而可以取消第二绝缘挡片， 但是， 设置第二绝缘挡片可以在第一绝缘 挡片 321损坏失效的情况下使得固定件 32依然可以具有锁附的作用。
如图 5所示， 固定件的插入端设置有一凸起 323 , 所述凸起 323为所述固定 件 32的主干 320凸出于所述第一绝缘挡片 321以及第二绝缘挡片 322的部分， 并且，该凸起 323上还设置有倒角，一方便固定件 32更容易插入 PCB以及背板 的孔内。
如图 3所示， 在本实施例中， 液晶显示装置的背板 20上还设置有用于遮盖 PCB30的盖板（图中未示出）。 如图 6所示， 作为本实施例的一种改进， 在固定 件 32的非插入端也设置有凸起 324。 利用凸起 324形成一个限位结构， 阻挡盖 板因变形而抵压到 PCB30上的元器件， 保护 PCB30的安全， 同时， 凸起 324可 以方便对固定件 32的取出和安装。 凸起 324的顶端还设置有一直径大于所述凸 起 324的环形凸沿 325 , 利用环形凸沿 325可以更方便取出固定件 32。
当然，对于本发明来说， 固定件不仅可以对设置在背板上的 PCB进行锁附， 对于设置在液晶显示装置上其它位置的 PCB也可以，如若 PCB设置在液晶显示 装置的后盖上， 也可以使用本发明所述的固定件。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干筒单推演或替 换， 都应当视为属于本发明的保护范围。

Claims

权利要求
1、 一种液晶显示装置， 包括： 背板、 固定在背板上的 PCB、 用于固定 PCB 的固定件以及用于遮盖所述 PCB的盖板； 所述固定件包括： 一主干、 分别设置 在主干两端的两层绝缘挡片， 所述主干上两端的绝缘挡片为具有柔软弹性的绝 缘挡片， 所述固定件穿过所述 PCB以及背板并通过所述两端的绝缘挡片分别从 两端将所述背板以及 PCB锁附在一起； 所述固定件相对于所述盖板的一端设置 有凸起， 所述凸起的顶端设置有一直径大于所述凸起的环形凸沿； 所述固定件 的另一端也设置有凸起， 所述凸起为所述主干凸出于所述绝缘挡片的部分。
2、 一种液晶显示装置， 包括： 背板、 固定在背板上的 PCB 以及用于固定 PCB 的固定件； 其中， 所述固定件包括： 一主干、 设置在主干两端的限位部， 所述限位部为绝缘材料制作而成。
3、 如权利要求 2所述的一种液晶显示装置， 其中， 所述限位部为分别设置 在所述主干两端的绝缘挡片， 所述主干上至少一端的绝缘挡片为具有柔软弹性 的绝缘挡片， 所述固定件穿过所述 PCB以及背板并通过所述两端的绝缘挡片分 别从两端将所述背板以及 PCB锁附在一起。
4、 如权利要求 3所述的一种液晶显示装置， 其中， 所述固定件主干的两端 的绝缘挡片均为具有柔软弹性的绝缘挡片。
5、 如权利要求 4所述的一种液晶显示装置， 其中， 所述固定件的两端各设 置有两层柔性绝缘挡片。
6、 如权利要求 3所述的一种液晶显示装置， 其中， 所述背板上还设置有用 于遮盖所述 PCB的盖板， 所述固定件相对于所述盖板的一端设置有凸起。
7、 如权利要求 6所述的一种液晶显示装置， 其中， 所述凸起的顶端设置有 一直径大于所述凸起的环形凸沿。
8、 如权利要求 6所述的一种液晶显示装置， 其中， 所述固定件的另一端也 设置有凸起， 所述凸起为所述主干凸出于所述绝缘挡片的部分。
9、 如权利要求 3所述的一种液晶显示装置， 其中， 所述固定件为橡胶材料 一体制作而成。
10、 一种用于锁附 PCB的固定件， 所述固定件包括： 一主干、 设置在主干 两端的限位部， 所述限位部为绝缘材料制作而成。
11、 如权利要求 10所述的一种用于锁附 PCB的固定件， 其中， 所述限位部 为分别设置在所述主干两端的绝缘挡片， 所述主干上至少一端的绝缘挡片为具 有柔软弹性的绝缘挡片， 所述固定件穿过液晶显示装置的 PCB以及背板并通过 所述两端的绝缘挡片分别从两端将所述背板以及 PCB锁附在一起。
12、如权利要求 11所述的一种用于锁附 PCB的固定件， 其中， 所述固定件 主干的两端的绝缘挡片均为具有柔软弹性的绝缘挡片。
13、 如权利要求 12所述的一种用于锁附 PCB的固定件， 其中， 所述固定件 的两端各设置有两层柔性绝缘挡片。
14、 如权利要求 11所述的一种用于锁附 PCB的固定件， 其中， 液晶显示装 置的背板上还设置有用于遮盖所述 PCB的盖板， 所述固定件相对于所述盖板的 一端设置有凸起。
15、 如权利要求 14所述的一种用于锁附 PCB的固定件， 其中， 所述凸起的 顶端设置有一直径大于所述凸起的环形凸沿。
16、 如权利要求 14所述的一种用于锁附 PCB的固定件， 其中， 所述固定件 的另一端也设置有凸起， 所述凸起为所述主干凸出于所述绝缘挡片的部分。
17、 如权利要求 11所述的一种用于锁附 PCB的固定件， 其中， 所述固定件 为橡胶材料一体制作而成。
PCT/CN2012/078335 2012-06-28 2012-07-09 液晶显示装置及用于锁附pcb的固定件 Ceased WO2014000321A1 (zh)

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