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WO2013071658A1 - 一种背板及使用该背板的背光模组、液晶显示装置 - Google Patents

一种背板及使用该背板的背光模组、液晶显示装置 Download PDF

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Publication number
WO2013071658A1
WO2013071658A1 PCT/CN2011/083341 CN2011083341W WO2013071658A1 WO 2013071658 A1 WO2013071658 A1 WO 2013071658A1 CN 2011083341 W CN2011083341 W CN 2011083341W WO 2013071658 A1 WO2013071658 A1 WO 2013071658A1
Authority
WO
WIPO (PCT)
Prior art keywords
bridge
bridges
bracket
disposed
hinge
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/CN2011/083341
Other languages
English (en)
French (fr)
Inventor
郭仪正
萧宇均
黄冲
程加河
阙成文
李全
杨流洋
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 US13/376,182 priority Critical patent/US9063374B2/en
Publication of WO2013071658A1 publication Critical patent/WO2013071658A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133608Direct backlight including particular frames or supporting means
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314Back frames

Definitions

  • the present invention relates to the field of liquid crystal display, and more particularly to a backplane and a backlight module and a liquid crystal display device using the same.
  • FIG. 1 is a schematic view of a conventional back plate structure, which is formed by integrally stamping a whole piece of metal, and a convex hull 80 for fixing a PCB is also punched out on the surface of the plate, which has more consumables. , and the weight is large, the processing process is also cumbersome. With the increasingly fierce market competition, it is becoming more and more important to effectively reduce the design cost.
  • the convex hull is a structure disposed on the backboard for fixing components such as a PCB board.
  • the convex hull is generally protruded from the back board surface, and the PCB board is fixed on the convex hull by screws or other lock accessories, thereby avoiding the PCB and the back board. Direct contact with the board surface causes a short circuit.
  • the convex hull 80 on the back plate is integrally stamped on the back plate when the back plate is fabricated, so that the position of the convex hull 80 on the back plate is fixed, which is difficult to adapt to different.
  • the technical problem to be solved by the present invention is to provide a back sheet which is material-saving and has good versatility.
  • a backlight module and a liquid crystal display device using the back panel are used to provide a back sheet which is material-saving and has good versatility.
  • a backboard the backboard includes a main frame composed of a plurality of brackets, and a bridge disposed on the bracket for fixing the PCB board, The bridge can be rotated relative to its fixed point with the bracket.
  • the bridges are arranged in pairs on two adjacent or opposite brackets, and the fixed ends of the bridges are connected to the brackets by end hinges.
  • the PCB is locked by four corner points, so the bridges are arranged in pairs to correspond to the corners of the PCB.
  • the PCB board is fixed by at least four bridges disposed on the bracket. Fix the PCB with at least four bridges to make the PCB more securely attached to the backplane.
  • the free ends of the two bridges disposed in pairs are connected by a tail hinge, and the distance between the hinge point of the free end and the fixed point is adjustable.
  • the free-end bridge can provide a more stable support, and the distance between the hinge point of the free end and the fixed point of the fixed end can be adjusted without affecting the selectivity of the bridge.
  • the free ends of the two bridges disposed in pairs are provided with connecting grooves, and the tail hinges pass through the connecting grooves of the two bridges, and the tail hinges are slidable in the connecting grooves.
  • the connecting groove at the free end and sliding the tail hinge in the connecting groove By opening the connecting groove at the free end and sliding the tail hinge in the connecting groove, the distance between the fixed point of the free end and the fixed point of the fixed end can be adjusted without affecting the rotation of the bridge.
  • the free ends of the two bridges disposed in pairs are provided with connecting slots, and the pair of fixed ends are also provided with mounting slots, and the end hinges and the tail hinges are respectively
  • the connecting groove and the mounting lateral groove slide. Grooves are provided at both ends so that the hinges at both ends can slide in the groove, so that the convex hull on the bridge can be adjusted in both the lateral and vertical directions, so that the moving area of the convex hull is larger, so that the back plate is More versatile.
  • the bridge is connected to the bracket by screws. After the PCB is locked, the screws can be locked so that the bridge does not rotate or slide, improving its reliability.
  • the bridge is connected to the bracket by a rivet.
  • the hinge formed by the rivet connection is more reliable and more convenient to set up.
  • a backlight module includes the above back plate.
  • a liquid crystal display device includes the above backlight module.
  • the frame is provided with a bridge for mounting components such as PCBs, and the brackets and the bridges can be combined by using common molded parts, which is low in manufacturing cost and saves A large amount of material; at the same time, the bridge can be rotated relative to its fixed point with the bracket, so that the convex hull on the bridge can adjust its position when the bridge rotates, and corresponding to the corresponding PCB locking point,
  • the need for different sized PCBs increases the versatility of the backplane.
  • Figure 1 is a structural tube diagram of a conventional backboard
  • Figure 2 is a structural view of a back plate of a first embodiment of the present invention
  • FIG. 3 is an enlarged view of A of Figure 2
  • Figure 5 is another structural form of the first embodiment of the present invention.
  • Figure 6 is a third structural form of the first embodiment of the present invention.
  • Figure 7 is a convex hull structure of a second and third embodiment of the present invention.
  • Figure 8 is a view showing a convex package locking PCB barrel of the second and third embodiments of the present invention.
  • FIG. 10 is another convex hull locking PCB cartridge of the second and third embodiments of the present invention
  • FIG. 11 is a third convex hull structure of the second and third embodiments of the present invention
  • Figure 12 is a schematic structural view of a second embodiment of the present invention.
  • FIG. 13 is a trajectory analysis diagram of a convex hull according to a second embodiment of the present invention.
  • Figure 14 is another structural form of a second embodiment of the present invention.
  • Figure 15 is a third structural form of a second embodiment of the present invention.
  • Figure 16 is a third embodiment of the present invention.
  • Figure 17 is a trajectory analysis diagram of a convex hull according to a third embodiment of the present invention
  • Figure 18 is another structural form of a third embodiment of the present invention
  • Figure 19 is a third structural form of a third embodiment of the present invention.
  • the present invention provides a liquid crystal display device including a liquid crystal panel and a backlight module, and a back plate is disposed at the bottom of the backlight module.
  • the backboard includes a frame composed of a plurality of brackets, and the frame is provided with a plurality of bridges.
  • the bracket includes an upper bracket 111, a lower bracket 113, a left bracket 114, and a right bracket 112 connected end to end, forming a large frame of the entire backboard, and two central brackets 115 are also disposed in the large frame. Both ends of the bracket 115 are respectively fixed on the upper and lower brackets.
  • a plurality of bridges are provided on each of the brackets and between the two brackets, and the bridges 120 can be used to fix components of the PCB board and other backlight modules.
  • the bridge 120 is provided with a convex hull 800 for locking the PCB, and the bridge can be rotated relative to a fixed point between it and the bracket.
  • FIG. 2 shows an embodiment of the present invention.
  • A refers to a setting of a rotating bridge
  • FIG. 3 is an enlarged view of A.
  • the center bracket 115 and A plurality of oppositely disposed bridges 120 are disposed on the right bracket 112.
  • the fixed ends of the bridges 120 are respectively connected to the center bracket 115 and the right bracket 112 through the end hinges 124, so that the bridge 120 can be opposite to the brackets
  • the fixed point ie the end hinge 124) rotates.
  • FIG. 4 is a running track diagram of the convex hull 800 on the two bridges 120 on the right bracket 112.
  • the arc line R represents the running trajectory of the convex hull 800
  • the straight lines L1 and L2 represent PCBs of different sizes.
  • the connection point of the fixed point as shown in the figure, the intersection of the line L1 and the curve R is the position of the fixed points A and a of the PCB, and the intersection of the line L2 and R is the fixed point B and b of the other PCB.
  • Position that is, in the rotatable trajectory of the convex hull 800 on the bridge 120, provided Fixed positions of the two types of PCBs in the A and a positions, B and b positions. Therefore, the solution can set the running trajectory of the corresponding convex hull 800 according to different sizes of PCBs, and can simultaneously meet the installation of a plurality of PCBs of different sizes, thereby improving the versatility of the backboard.
  • the free ends of the two opposite bridges 120 may be connected through the tail hinge 125, and a connecting groove 127 may be opened at the joint thereof to make the tail hinge 125 can slide on the connecting groove so as not to block the rotation of the bridge 120; correspondingly, as shown in FIG. 6, a lateral groove 126 is also formed at the fixed end of the bridge 120, so that the end hinge 124 can also be in the transverse groove.
  • the inner portion of the bridge 120 is also slidable relative to the end hinge 124, so that the movable trajectory of the convex hull 800 on the bridge 120 is no longer limited to the circular arc trajectory as shown in FIG. It is a larger area, which further improves the versatility of the backplane.
  • FIG. 7 and FIG. 9 show a convex hull 800 as an independent component in the embodiment of the present invention.
  • a convex hull is not formed on the backboard when the backboard is produced, but when a convex hull is needed,
  • the convex hull 800 is mounted at the corresponding position of the backboard 1 to achieve flexible use of the convex hull 800 to position components such as PCBs of various sizes.
  • the convex hull 800 has a threaded hole 810 for mounting a component such as a PCB board, and the threaded hole 810 is straight through the independent convex hull 800 so that the independent convex hull 800 can be fixed from below by the screw 811.
  • the PCB board can be fixed on the top, and correspondingly, the backboard 1 should be provided with a convex package mounting hole, such as a through hole or a chute, which is equivalent in size to the threaded hole 810 of the convex package 800.
  • a convex package mounting hole such as a through hole or a chute
  • the fixing between the PCB, the convex hull and the back plate can be realized by using only one screw with a nut. As shown in FIG. 8, since the threaded hole penetrates the entire convex hull 800, the screw 811 can be directly matched with the nut 812. Attach the PCB300 to the backplane 1.
  • the bottom of the convex hull can be set as a rivet-like structure as shown in FIG. 9, that is, the rivet and the convex hull are integrally formed, and the connection between the lower end portion of the convex hull 800 and the back plate 1 is a riveted form, that is, The convex hull 800 is riveted to the backing plate 1 by rivets 820.
  • the way of riveting is relatively quick compared to the way the screws are connected, and can be done by machine to increase the efficiency of production.
  • the convex hull 800 is fixed to the backboard 1 by rivets 820, and then the PCB 300 is fixed to the convex hull by screws 811 to complete the locking of the PCB 300.
  • the convex hull can be directly stamped from the plate.
  • the convex hull 800 has a hollow structure inside, and the whole is made of a plate material, which saves material and is convenient to manufacture.
  • the shape of the independent convex hull 800 described in this embodiment is not limited to the tapered sectional shape shown in the drawing, and the corresponding use can be achieved with respect to other shapes such as a square.
  • FIG. 12 is a second embodiment of the present invention.
  • the difference from the first embodiment is: a chute 121 is disposed on the bridge 120, and a convex hull 800 is formed on the chute 121 as a separate component.
  • the package 800 can be placed at a corresponding position on the chute 121 as needed.
  • the movable position of the convex hull 800 is analyzed, and the shaded portion (i.e., the oblique line filling portion) shown in the figure is a movable area of the convex hull 800.
  • the configurable position of the convex hull 800 will be the shaded portion shown in the figure, thus, according to different specifications of the PCB, the setting The rotational position of the corresponding bridge 120 and the length of the chute 121 are such that the shaded portion covers the attachment points of various PCBs, so that the backplane can be adapted to PCBs of various sizes.
  • the end hinge of the fixed end can also be provided with a corresponding mounting transverse groove so that the bridge can slide relative to the end hinge, and the mounting transverse groove can also be processed together during the processing of the chute, that is, the chute replaces the horizontal
  • the chute replaces the horizontal
  • the chute extends to the joint of the fixed end.
  • a third embodiment of the present invention is different from the second embodiment in that: a through hole 122 is disposed on the bridge 120, and a convex hull existing as a separate component is mounted on the through hole 122. 800, the convex hull 800 can be disposed on the through hole 122 at the corresponding position as needed. As shown in Figure 17, the convex hull 800 The analysis of the movable position, in which the circular arc R represents the movable trajectory of the convex hull 800 on the through hole 122 at a certain position, and the circular arc line R1 represents the convex hull 800 on the through hole 122 at another position.
  • the movable track of the time for the same reason, when the convex hull 800 is on the through hole 122 at different positions, different movable trajectories will be generated.
  • a large movable track of the convex hull 800 can also be obtained, that is, according to different specifications of the PCB, the rotation position of the corresponding bridge 120 and the through hole 122 are set.
  • the position and number enable the movable track of the convex hull 800 to cover the locking points of various PCBs, so that the back plate can be adapted to PCBs of various sizes.
  • the fixed end end hinges 124 can also be provided with corresponding mounting slots 126 to allow the bridge to slide relative to the end hinges for a better convex hull movable area.
  • the hinge connection between the bridge and the bracket, and the hinge connection between the bridge and the bridge can be connected by screws or rivets, and the locking of the PCB can be completed by using screws.
  • the screws are then tightened to increase their stability; the use of rivets improves the reliability of the connection.

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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)
  • Liquid Crystal (AREA)

Abstract

一种背板(1)及使用该背板(1)的背光模组、液晶显示装置。所述背板(1)包括由多个支架(111,112,113,114,115)组成的主框架,及设置在所述支架(112,115)上用于固定PCB(300)的架桥(120),所述架桥(120)可以相对于其与所述支架(112,115)的固定点旋转。由于背板(1)由多个支架(111,112,113,114,115)组成主框架,在主框架上设置用于安装PCB(300)等组件的架桥(120),支架(111,112,113,114,115)以及架桥(120)都可以使用通用的成型件组合而成,制造成本较低,并且节约了大量的材料;同时,架桥(120)可以相对于其与支架(112,115)的固定点旋转,从而使得架桥(120)上的凸包(800)可以在架桥(120)旋转时调整其位置,进而对应到相应的PCB(300)的锁附点,满足不同尺寸的PCB(300)的需要,提高背板(1)的通用性。

Description

一种背板及使用该背板的背光模组、 液晶显示装置
【技术领域】
本发明涉及液晶显示领域, 更具体的说, 涉及一种背板及使用该背板的背 光模组、 液晶显示装置。
【背景技术】
现量产中的液晶模组均使用整体式的背板。 一般使用金属沖压或者塑料注 射方式整体成型, 使得产品比较重, 产品的材料成本较高。 大尺寸产品需使用 较大的沖压设备, 成本较高, 对应的模具尺寸很大, 结构复杂, 模具成本也很 高。 如图 1所示为现有的一种背板结构筒图, 该背板由整块金属整体沖压形成, 其板面上同时也沖压出用于固定 PCB的凸包 80, 其本身耗材较多, 并且重量较 大, 加工过程也繁瑣。 随着市场竟争的日益激烈, 有效的降低设计成本变得越 来越重要, 于是节省材料成本和筒化组装工艺成为各设计者研究的重要方向, 于是在原有的整体背板设计上发展处了镂空或是拼接背板的设计, 在一定程度 上降低了成本, 但是拼接或镂空背板强度下降, 进而使得原本在背板上固定的 PCB板变的不易。
凸包, 是设置于背板上用于固定 PCB板等组件的结构, 凸包一般凸出于背 板板面, PCB板通过螺釘或其他锁附件固定在凸包上, 进而避免 PCB与背板板 面直接接触造成短路。 如图 1所示的现有背板, 该背板上的凸包 80在背板制作 时一体沖压成型于背板之上, 这样背板上的凸包 80的位置是固定的, 难以适应 不同尺寸的 PCB板; 同时对于不同尺寸的 PCB, 以及不同组件数量需求的背光 模组, 需要重新开模制作相应的背板, 针对不同尺寸的 PCB板, 需要开模制作 新的背板, 因此其通用性不好, 并且生产成本在这种情况下会较高。
【发明内容】
本发明所要解决的技术问题是提供一种节约材料、 并且通用性好的背板及 使用该背板的背光模组、 液晶显示装置。
本发明的目的是通过以下技术方案来实现的: 一种背板, 所述背板包括由 多个支架组成的主框架, 及设置在所述支架上用于固定 PCB板的架桥, 所述架 桥可以相对于其与所述支架的固定点旋转。
优选的, 所述架桥成对设置在两个相邻或相对的支架上, 所述架桥的固定 端通过端部铰链连接到支架上。 一般 PCB通过四个角点锁附, 因而架桥成对设 置, 以对应到 PCB的角点处。
优选的, 所述 PCB板通过至少四个设置在所述支架上的架桥固定。 利用至 少四个架桥固定 PCB, 使 PCB更可靠的锁附在背板上。
优选的, 所述成对设置的两个架桥的自由端通过尾部铰链连接, 所述自由 端的铰接点与所述固定点的间距可调。 自由端连接的架桥可以提供更稳固的支 撑, 同时其自由端的铰接点与固定端的固定点的间距可调, 不会影响架桥的可 选择性。
优选的, 所述成对设置的两个架桥的自由端设置有连接槽, 所述尾部铰链 穿过所述两个架桥的连接槽, 所述尾部铰链可以在所述连接槽内滑动。 通过在 自由端开设连接槽, 使尾部铰链在连接槽内滑动, 从而可以实现自由端的铰接 点与固定端的固定点的间距调整, 并且不会影响架桥的旋转。
优选的, 所述成对设置的两个架桥的自由端设置有连接槽, 所述成对设置 的固定端也设置有安装横槽, 所述端部铰链以及所述尾部铰链均分别可以在所 述连接槽及安装横槽内滑动。 两端都设置槽, 使得两端的铰链都可以在槽内滑 动, 从而可以在横向和竖向的两个方向调整架桥上的凸包, 从而使凸包的移动 区域更大, 使得背板的通用性更好。
优选的,所述架桥与所述支架之间通过螺釘进行连接。可以在锁附 PCB后, 将螺釘锁紧, 以使架桥不再旋转或滑动, 提高其可靠性。
优选的, 所述架桥与支架之间通过铆釘进行连接。 铆釘连接形成的铰链可 靠性较高, 并且更方便设置。 一种背光模组, 其包括了上述的背板。
一种液晶显示装置, 其包括了上述的背光模组。
本发明由于将背板由多个支架组成框架结构, 在框架上设置用于安装 PCB 等组件的架桥, 支架以及架桥都可以使用通用的成型件组合而成, 制造成本较 低, 并且节约了大量的材料; 同时, 架桥可以相对于其与支架的固定点旋转, 从而使得架桥上的凸包可以在架桥旋转时调整其位置, 进而对应到相应的 PCB 的锁附点, 满足不同尺寸的 PCB的需要, 提高背板的通用性。
【附图说明】
图 1是现有背板的结构筒图,
图 2是本发明第一种实施例的背板的结构筒图,
图 3是图 2的 A的放大图,
图 4是本发明第一种实施例中凸包的轨迹分析图,
图 5是本发明第一种实施例的另一种结构形式,
图 6是本发明第一种实施例的第三种结构形式,
图 7是本发明第二、 第三种实施例的凸包结构,
图 8是本发明第二、 第三种实施例的凸包锁附 PCB筒图,
图 9是本发明第二、 第三种实施例的另一种凸包结构,
图 10是本发明第二、 第三种实施例的另一种凸包锁附 PCB筒图, 图 11是本发明第二、 第三种实施例的第三种凸包的结构,
图 12是本发明的第二种实施例的结构示意图,
图 13是本发明第二种实施例凸包的轨迹分析图,
图 14是本发明第二种实施例的另一种结构形式,
图 15是本发明第二种实施例的第三种结构形式,
图 16是本发明第三种实施例,
图 17本发明第三种实施例凸包的轨迹分析图, 图 18是本发明第三种实施例的另一种结构形式,
图 19是本发明第三种实施例的第三种结构形式。
其中: 1、 背板, 100、 框架, 111、 上支架, 112、 右支架, 113、 下支架, 114、 左支架, 115、 中心支架, 120、 架桥, 121、 滑槽, 122、 通孔, 124、 端 部铰链, 125、 尾部铰链, 126、 安装横槽, 127、 连接槽, 800、 凸包, 810、 螺 纹孔, 811、 螺釘, 812、 螺母, 820、 铆釘, 300、 PCB。
【具体实施方式】
本发明实提供一种液晶显示装置, 包括液晶面板和背光模组, 所述背光模 组底部设有背板。 背板包括由多根支架组成的框架, 框架上设有多个架桥。 如 图 2所示, 所述支架包括首尾相连的上支架 111、 下支架 113、 左支架 114、 右 支架 112, 组成整个背板的大框架, 大框架里面还设有两个中心支架 115, 中心 支架 115 的两端分别固定在上、 下两个支架上面。 各个支架上以及两个支架之 间设有多个架桥, 架桥 120可以用于固定 PCB板和其它背光模组的组件。 架桥 120上设置有用于锁附 PCB的凸包 800,并且,所述架桥可以相对于其与支架之 间的固定点旋转。
针对此方案, 本发明通过以下优选的实施例进一步说明:
如图 2所示为本发明的一种实施例, 图中 A所指之处为一种旋转架桥的设 置, 图 3为 A处的放大图, 如图 3中所示, 中心支架 115与右支架 112上共设 置了四个相对设置的架桥 120,架桥 120的固定端通过端部铰链 124分别与中心 支架 115和右支架 112连接, 这样, 架桥 120可以相对于其与支架上的固定点 (即端部铰链 124 )旋转。 如图 4所示为右支架 112上的两个架桥 120上的凸包 800的运行轨迹图, 图中圓弧线 R表示凸包 800的运行轨迹, 直线 Ll、 L2代指 不同尺寸的 PCB的固定点的连线, 如图中所示, 直线 L1与曲线 R的交点处为 PCB的固定点 A和 a的位置, 直线 L2与 R的交点处为另一种 PCB的固定点 B 和 b的位置, 也就是说, 在架桥 120的上的凸包 800的可旋转轨迹中, 提供了 固定点在 A和 a位置、 B和 b位置的两种规格的 PCB的锁附位置。 因此, 本方 案可以根据不同尺寸的 PCB , 设置相应的凸包 800的运行轨迹, 可以同时满足 多个不同尺寸的 PCB的安装, 从而可以提高背板的通用性。
另外, 如图 5所示, 为了提高架桥 120的支撑强度, 可以将两各相对的架 桥 120的自由端通过尾部铰链 125进行连接, 并在其连接处开设连接槽 127 , 以 使尾部铰链 125可以在连接槽上滑动, 从而不会阻挡架桥 120的旋转; 相应的, 如图 6所示, 在架桥 120的固定端也开设横槽 126, 使端部铰链 124也可以在横 槽 126内滑动, 这样, 架桥 120整体也可以相对于端部铰链 124进行滑动, 使 得架桥 120上的凸包 800的可移动轨迹不再局限于如图 4所示的圓弧线轨迹, 而是更大的面域, 从而更进一步提高背板的通用性。
根据上述实施例中所述的方案, 为了获得更大的凸包可移动的范围, 还可 以在架桥上设置滑槽或通孔, 并使用作为单独零件存在的凸包。
如图 7及图 9所示为本发明实施例中作为独立零件存在的凸包 800,此类凸 包并不在背板生产时成形在背板上, 而是在需要使用凸包的时候, 在背板 1 的 相应位置上将凸包 800安装上去, 以达到灵活运用凸包 800来定位各种尺寸的 PCB等组件。
如图 7所示, 凸包 800具有一用于安装固定 PCB板等组件的螺纹孔 810, 该螺纹孔 810—直贯通该独立凸包 800,以使独立凸包 800可以通过螺釘 811从 下方固定到背板 1上, 同时又可以在上方固定 PCB板, 相应的, 背板 1上应当 设置有与所述凸包 800的螺纹孔 810大小相当的凸包安装孔, 如通孔或滑槽, 以使凸包 800能够固定到背板 1上。 同样的, 也可以仅使用一个螺釘配合螺母 实现 PCB、 凸包以及背板之间的固定, 如图 8所示, 由于螺纹孔贯通了整个凸 包 800, 进而可以通过一个螺釘 811配合螺母 812直接将 PCB300锁附到背板 1 上。
为了使安装方便, 如图 9所示凸包的底部可以设置成铆釘类似的结构, 即 将铆釘与凸包一体成型, 凸包 800的下端部分与背板 1的连接是铆接形式, 即 凸包 800通过铆釘 820铆接到背板 1上。 铆接的方式相对于螺釘连接的方式, 其比较快捷, 并可通过机器完成, 提高生产的效率。 如图 10所示, 凸包 800通 过铆釘 820固定到背板 1上, 然后 PCB300通过螺釘 811固定到凸包上, 完成对 PCB300的锁附。
为了节约材料, 以及加工方便, 凸包可以由板件直接沖压形成, 如图 11所 示, 凸包 800 内部为镂空结构, 其整体由一板件材料制作而成, 既节约材料, 又方便制作。 当然, 本实施例中所述的独立凸包 800 的形状并不限于图中所示 的锥形截面形状, 相对于其它形状如方形也能达到相应的用途。
如图 12为本发明的第二种实施例, 与实施例一不同的是: 在架桥 120上设 置有滑槽 121 , 并在滑槽 121上安装有作为单独零件存在的凸包 800, 凸包 800 可以 ^据需要设置在滑槽 121上的相应位置。 如图 13所示为凸包 800的可移动 位置的分析, 图中所示的阴影部分(即斜线填充部分) 为凸包 800 的可以移动 区域。 也就是说, 配合架桥 120本身的旋转以及凸包 800可以在滑槽 121的移 动, 凸包 800 的可设置位置将为图中所示的阴影部分区域, 这样, 根据不同规 格的 PCB , 设置相应的架桥 120的旋转位置、 滑槽 121的长度使得阴影部分覆 盖多种 PCB的锁附点, 从而使得背板可以适应于多种尺寸的 PCB。
另外, 为了提高架桥的支撑强度, 需要将两相对的架桥的自由端连接起来, 并设置连接槽用于安装铰链, 以使架桥仍然可以旋转。 如图 14所示, 为了方便 加工, 在加工滑槽 121的时候, 将滑槽 121的长度延伸, 使滑槽 121代替连接 槽的功能。
当然, 固定端的端部铰链也可以设置相应的安装横槽以使架桥可以相对于 端部铰链滑动, 并且, 所述安装横槽也可以在滑槽加工时一同加工出来, 即滑 槽代替横槽的功能, 如图 15所示, 滑槽 121延伸到了固定端的连接处。
如图 16所示为本发明的第三种实施例, 与实施例二不同的是: 在架桥 120 上设置的是通孔 122, 并在通孔 122上安装有作为单独零件存在的凸包 800, 凸 包 800可以 ^据需要设置在相应位置处的通孔 122上。 如图 17所示为凸包 800 的可移动位置的分析, 图中圓弧线 R表示凸包 800在某一位置的通孔 122上时 的可移动轨迹, 圆弧线 R1表示凸包 800在另一位置处的通孔 122上时的可移动 轨迹, 同理, 凸包 800在不同的位置的通孔 122上时, 将产生不同的可移动轨 迹。 这样, 通过在架桥 120上设置通孔 122, 也可以获得凸包 800较大的可移动 轨迹, 也就是说, 根据不同规格的 PCB , 设置相应的架桥 120的旋转位置、 通 孔 122的位置及数量使得凸包 800的可移动轨迹覆盖多种 PCB的锁附点, 从而 使得背板可以适应于多种尺寸的 PCB。
如图 18所示, 与实施例二一样, 为了提高架桥 120的支撑强度, 需要将两 相对的架桥 120的自由端连接起来, 并设置连接槽 127用于安装尾部铰链 125 , 以使架桥仍然可以旋转。 如图 19所示, 固定端的端部铰链 124也可以设置相应 的安装横槽 126 以使架桥可以相对于端部铰链滑动, 获得更好的凸包可移动区 域。
在本发明的几个实施例中, 架桥与支架之间的铰链连接、 架桥与架桥之间 的铰链连接可以通过螺釘或者铆釘进行连接, 使用螺釘的方式可以在完成对 PCB 的锁附后将螺釘锁紧, 提高其稳定性; 而使用铆釘则可以提高连接的可靠 性。
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、 一种背板, 包括: 由多个支架组成的主框架, 及设置在所述支架上 用于固定 PCB板的架桥,所述架桥可以相对于其与所述支架的固定点旋转。
2、 如权利要求 1所述的一种背板, 其特征在于, 所述架桥成对设置在 两个相邻或相对的支架上,所述架桥的固定端通过端部铰链连接到支架上。
3、 如权利要求 2所述的一种背板, 其特征在于, 所述 PCB板通过至 少四个设置在所述支架上的架桥固定。
4、 如权利要求 2所述的一种背板, 其特征在于, 所述成对设置的两个 架桥的自由端通过尾部铰链连接, 所述自由端的铰接点与所述固定点的间 距可调。
5、 如权利要求 4所述的一种背板, 其特征在于, 所述成对设置的两个 架桥的自由端设置有连接槽, 所述尾部铰链穿过所述两个架桥的连接槽, 所述尾部铰链可以在所述连接槽内滑动。
6、 如权利要求 4所述的一种背板, 其特征在于, 所述成对设置的两个 架桥的自由端设置有连接槽, 所述成对设置的固定端也设置有安装横槽, 所述端部铰链以及所述尾部铰链均分别可以在所述连接槽及安装横槽内滑 动。
7、 如权利要求 1所述的一种背板, 其特征在于, 所述架桥与所述支架 之间通过螺釘进行连接。
8、 如权利要求 1所述的一种背板, 其特征在于, 所述架桥与支架之 间通过铆釘进行连接。
9、 一种背光模组, 包括: 如权利要求 1所述的背板, 所述背板包括: 由多个支架组成的主框架, 及设置在所述支架上用于固定 PCB板的架桥, 所述架桥可以相对于其与所述支架的固定点旋转。
10、 如权利要求 9所述的一种背光模组, 其特征在于, 所述架桥成对 设置在两个相邻或相对的支架上, 所述架桥的固定端通过端部铰链连接到 支架上。
11、 如权利要求 10所述的一种背光模组, 其特征在于, 所述 PCB板 通过至少四个设置在所述支架上的架桥固定。
12、 如权利要求 10所述的一种背光模组, 其特征在于, 所述成对设置 的两个架桥的自由端通过尾部铰链连接, 所述自由端的铰接点与所述固定 点的间距可调。
13、 如权利要求 12所述的一种背光模组, 其特征在于, 所述成对设置 的两个架桥的自由端设置有连接槽, 所述尾部铰链穿过所述两个架桥的连 接槽, 所述尾部铰链可以在所述连接槽内滑动。
14、 如权利要求 12所述的一种背光模组, 其特征在于, 所述成对设置 的两个架桥的自由端设置有连接槽, 所述成对设置的固定端也设置有安装 横槽, 所述端部铰链以及所述尾部铰链均分别可以在所述连接槽及安装横 槽内滑动。
15、 如权利要求 9所述的一种背光模组, 其特征在于, 所述架桥与所 述支架之间通过螺釘进行连接。
16、 如权利要求 9所述的一种背光模组, 其特征在于, 所述架桥与支 架之间通过铆釘进行连接。
17、 一种液晶显示装置, 包括: 如权利要求 9所述的背光模组, 所述 背光模组包括背板, 所述背板包括由多个支架组成的主框架, 及设置在所 述支架上用于固定 PCB板的架桥, 所述架桥可以相对于其与所述支架的固 定点旋转。
18、 如权利要求 17所述的一种液晶显示装置, 其特征在于, 所述架桥 成对设置在两个相邻或相对的支架上, 所述架桥的固定端通过端部铰链连 接到支架上。
19、 如权利要求 18所述的一种液晶显示装置, 其特征在于, 所述 PCB 板通过至少四个设置在所述支架上的架桥固定。
20、 如权利要求 18所述的一种液晶显示装置, 其特征在于, 所述成对 设置的两个架桥的自由端通过尾部铰链连接, 所述自由端的铰接点与所述 固定点的间距可调。
21、 如权利要求 20所述的一种液晶显示装置, 其特征在于, 所述成对 设置的两个架桥的自由端设置有连接槽, 所述尾部铰链穿过所述两个架桥 的连接槽, 所述尾部铰链可以在所述连接槽内滑动。
22、 如权利要求 20所述的一种液晶显示装置, 其特征在于, 所述成对 设置的两个架桥的自由端设置有连接槽, 所述成对设置的固定端也设置有 安装横槽, 所述端部铰链以及所述尾部铰链均分别可以在所述连接槽及安 装横槽内滑动。
23、 如权利要求 17所述的一种液晶显示装置, 其特征在于, 所述架桥 与所述支架之间通过螺釘进行连接。
24、 如权利要求 17所述的一种液晶显示装置, 其特征在于, 所述架 桥与支架之间通过铆釘进行连接。
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