WO2014139124A1 - 一种背光模组的led灯条卡扣结构及其液晶显示器 - Google Patents

一种背光模组的led灯条卡扣结构及其液晶显示器 Download PDF

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Publication number
WO2014139124A1
WO2014139124A1 PCT/CN2013/072612 CN2013072612W WO2014139124A1 WO 2014139124 A1 WO2014139124 A1 WO 2014139124A1 CN 2013072612 W CN2013072612 W CN 2013072612W WO 2014139124 A1 WO2014139124 A1 WO 2014139124A1
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WO
WIPO (PCT)
Prior art keywords
led light
light bar
fastener
backlight module
substrate
Prior art date
Application number
PCT/CN2013/072612
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English (en)
French (fr)
Inventor
李全
Original Assignee
深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/880,059 priority Critical patent/US9341350B2/en
Publication of WO2014139124A1 publication Critical patent/WO2014139124A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • 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
    • G02B6/0085—Means for removing heat created by the light source from the package
    • 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
    • G02B6/009—Positioning aspects of the light source 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133628—Illuminating devices with cooling means

Definitions

  • the invention belongs to the field of liquid crystal display technology, and particularly relates to a backlight module LED light bar buckle structure and a liquid crystal display thereof.
  • the backlight module is one of the key components of the liquid crystal display. Since the liquid crystal panel itself does not have the ability to emit light, it is necessary to provide a backlight for the liquid crystal display device.
  • the function of the backlight module is to supply a sufficient light source with uniform brightness and uniform distribution so that the liquid crystal display can display images normally.
  • the large-size edge-lit backlight module adopts at least two LED light bars on each side of the long-side upper side light input or the long-side one-side light input structure, and the LED light bars are respectively disposed on the side light type LEDs.
  • the backlight module has two sides on the long side of the frame. Taking the middle frame as an example, the current practice of fixing the middle frame is to punch the convex hull on the back plate, thus increasing the thickness of the back plate (0.6 to 1.2 mm), and the requirement of the ultra-narrow bezel design cannot be achieved.
  • Another method is to use the backing plate to make the heat-dissipating aluminum squeeze out, and punch the convex hull on the side of the heat-dissipating aluminum, but the processing is difficult, and the height of the convex hull is generally less than 0.5mm, and the fixed middle frame is not strong enough (requires 1.0mm or more) , and fixing the front frame is even more impossible (requires 1.3mm or more). Therefore, it is necessary to design a buckle structure in which the LED strip of the backlight module and the frame are fixed to overcome the above drawbacks.
  • the object of the present invention is to provide a LED light bar buckle structure of a backlight module, to simplify the module structure, realize the design of the ultra-narrow bezel module of the liquid crystal display, and reduce the influence of the stitching seam on the liquid crystal display effect.
  • the present invention provides an LED light bar buckle structure, comprising an LED light bar and a frame, the LED light bar comprising a substrate and a plurality of light emitting elements mounted on the substrate; wherein the LED light At least one fastener is disposed on the back surface of the strip substrate, and a card slot corresponding to the fastener member is disposed on the frame; the fastener member is engaged in the card slot to fix the LED light bar to the frame.
  • the fastener has a wedge shape.
  • the fastener material is a metal sheet metal or a metal block.
  • the substrate material is a metal or resin material.
  • the fastener is soldered to the back surface of the substrate in a wave soldering (SMT) manner.
  • SMT wave soldering
  • Another object of the present invention is to provide a backlight module, which comprises an LED light bar buckle structure, and the LED light bar buckle structure of the backlight module is composed of an LED light bar and a frame, and the LED light
  • the strip includes a substrate and a plurality of LED light-emitting elements mounted on the substrate, and at least one fastener is disposed on the back surface of the substrate, and a card slot corresponding to the fastener is disposed on the frame, and the fastener card is Fit in the card slot and fix the LED strip to the bezel.
  • the backlight module further comprises a heat dissipating aluminum extrusion, and the LED light bar is fixedly connected to the heat dissipation aluminum extrusion by rivets or screws.
  • Another object of the present invention is to provide a liquid crystal display, comprising a liquid crystal panel and a backlight module corresponding to the liquid crystal panel, wherein the backlight module comprises an LED light bar buckle structure, and the LED of the backlight module
  • the light bar buckle structure is composed of an LED light bar and a frame.
  • the LED light bar comprises a substrate and a plurality of LED light-emitting elements mounted on the substrate, and at least one fastener is arranged on the back of the substrate, and correspondingly arranged on the frame The fastener is matched with the card slot, and the fastener is engaged in the card slot to fix the LED light bar to the frame.
  • the LED light bar buckle structure of the present invention has the following advantages: The invention separately manufactures the fastener, discards the process limitation in the overall production, and uses the wave soldering (SMT) process to weld the fastener On the back of the LED strip, saves process investment.
  • SMT wave soldering
  • the fastener in the present invention is separately manufactured, the fastener and the LED light bar are combined to form a whole, and no new backlight assembly is added, which saves space, and the structure of the light bar and the frame is simplified, thereby simplifying the module.
  • the effect of the structure, at the same time, the fastener is embedded in the frame and fastened to the card slot, thereby reducing the distance from the LED light emitting surface to the edge of the module, and realizing the design of the ultra-narrow bezel module.
  • FIG. 1 is a schematic structural view of a liquid crystal display of the present invention.
  • 2 is a schematic view showing the fixing manner of the LED light bar and the heat dissipating aluminum extrusion according to the present invention.
  • Figure 3 is a schematic view showing the assembly of the snap structure of the present invention.
  • Figure 4 is a cross-sectional side view showing the structure of a fastener according to Embodiment 1 of the present invention.
  • Figure 5 is a cross-sectional side view showing the structure of a fastener according to a second embodiment of the present invention.
  • Figure 6 is a cross-sectional side view showing the structure of a fastener according to a third embodiment of the present invention.
  • Figure 7 is a cross-sectional side view showing the structure of a fastener according to a fourth embodiment of the present invention.
  • Figure 8 is a cross-sectional side view showing the structure of a fastener according to a fifth embodiment of the present invention.
  • the improvement of the backlight module of the present invention mainly lies in the fixing manner of the LED light bar and the frame.
  • the buckle structure of the present invention is used for the frame of the LED light bar and the backlight module, and of course other components can also be used.
  • a backlight module using the snap structure will be described in detail in this embodiment. Referring to FIG. 1 to FIG. 3, the backlight module of the present invention is used in a liquid crystal display 100. As shown in FIG.
  • the frame 200 includes a backlight module, an LED light bar 300, and a heat dissipation aluminum extrusion 400. It is in contact with the back surface of the LED light bar 300 for assisting in heat dissipation of the LED light bar 300.
  • the LED strip 300 includes a substrate 310 and an LED light emitting element 320 mounted on the substrate 310. Referring to Fig. 2, the substrate 310 and the heat-dissipating aluminum extrusion 400 are connected by screws 410 to fix the LED light bar 300 to the heat-dissipating aluminum extrusion 400 to enhance the fixed tensile stress.
  • the frame 200 may be a middle frame or a front frame. In this embodiment, the frame 200 refers to the middle frame.
  • At least one fastener 330 is connected to the back surface of the substrate 310, and a card slot 210 corresponding to the fastener 330 is disposed on the frame 200.
  • the fastener 330 is engaged in the card slot 210.
  • the LED light bar 330 is fixed to the bezel 200.
  • the fastener 330 in this embodiment is a wedge-shaped bump, and the card slot on the frame 200 210 is correspondingly arranged in a rectangular shape to match the fastener 330.
  • the fastener 330 of this embodiment will be fabricated separately from a metal sheet metal or a metal block material, and the substrate 310 is made of a metal or resin material.
  • the fastener 330 can be soldered to the back of the LED strip 300 by a wave soldering (SMT) process.
  • the fastener 330 is also fabricated by wave soldering (SMT) welding, which not only simplifies the assembly process of the fastener 330 and the light bar 300, and the section Provincial technology investment, and abandoned the process limitations of the overall production, improve production efficiency.
  • FIG. 4 is a cross-sectional side view showing the structure of the fastener according to Embodiment 1 of the present invention, and the fastener 330 is located on the back surface of the substrate 310 of the LED light bar.
  • the fastener 330 is made of a metal sheet metal material, wherein the fastener 330 is a monolithic structure, and includes a first sidewall 331 , a second sidewall 332 and a third sidewall 333 connected in sequence, wherein The two side walls 332 are surfaces parallel to the substrate 310.
  • the first side wall 331 and the third side wall 333 are side surfaces on both sides of the second side wall 332, and the first side wall 331 is designed as a slope.
  • the side wall of the fastener 330 connected to the LED light bar 300 is integrally bent and extended to extend parallel to the substrate 310.
  • the first extension portion 334 and the third sidewall 333 including the first sidewall 331 extending upward along the substrate 310 to form a contact with the substrate 310 extend upward along the substrate 310 to form a second extension portion 335 that is in contact with the substrate 310.
  • the fastener 330 When assembled, the fastener 330 is assembled with the LED light bar 300 and fixed to the heat dissipation aluminum extrusion 400 by the screw 410.
  • the frame 200 runs along the slope of the fastener 330 from top to bottom, that is, the first side wall 331, and the fastener 330 is attached.
  • the card is engaged in the card slot 210.
  • the frame 200 is made of a resin material and has a certain elasticity. It can be understood that the slope of the fastener 330 makes the fastening of the fastener 330 and the card slot 210 easier.
  • the wave soldering (SMT) process is used to solder the fastener to the back side of the substrate to combine the two together.
  • the wave soldering (SMT) process improves the quality and reliability of the solder joint.
  • the fastener 330 is completely embedded in the card slot 210 and matched with the card slot 210, thereby reducing the distance between the LED light-emitting component and the edge of the module, that is, the distance D in FIG. 3, thereby solving the ultra-narrow bezel design of the liquid crystal module. problem.
  • FIG. 5 there is shown a cross-sectional side view of the fastener structure of Embodiment 2 of the present invention.
  • the fastener structure of the second embodiment is similar to the fastener of the first embodiment, and therefore the same component symbol and name are used, but the difference is that the first extension portion 334 is the first side wall 331 along the substrate 310. Formed under the extension.
  • FIG. 6 and 6 a cross-sectional side view of the fastener structure of Embodiment 3 of the present invention is disclosed.
  • the fastener structure of the embodiment 3 is similar to the fastener of the first embodiment, and therefore the same component symbol and name are used, but the difference is that the second extension 335 is the third side wall 333 along the substrate 310. Formed under the extension.
  • the fastener 330 of the present embodiment is connected to the substrate 310 in a "several" shape, and it is understood that the stability is better than that of the embodiment 1.
  • FIG. 7 is a cross-sectional side view showing the structure of a fastener according to Embodiment 4 of the present invention.
  • the fastener 330 is made of a metal block material, and a full-face side wall 337 of the metal block is flatly welded to the substrate 310, and the fastener 330 is greatly increased relative to the embodiment 1.
  • the effective contact area of the substrate 310 so that the stability is greatly enhanced.
  • FIG. 8 and 8 a cross-sectional side view of the fastener structure of Embodiment 5 of the present invention is disclosed.
  • the fastener structure of the embodiment 5 is similar to the fastener of the embodiment 4, and therefore the same component symbols and names are used, but the difference is that the fastener 330 is made of a hollow metal block material in this embodiment.
  • the fastener 330 has the same effective contact area as the substrate 310, but the material used is reduced, and the material cost is reduced.
  • the present invention also provides a liquid crystal display 100, as shown in FIG. 3, including a front frame 500, a liquid crystal panel 600, and a backlight module.
  • the backlight module includes a frame. 200, LED light bar 300, heat dissipation aluminum extrusion 400, light guide plate 700 and optical film 800, wherein the LED light bar 300 and the frame 200 adopt the LED light bar buckle of the backlight module described in any of the above embodiments.
  • the structure is fixed to simplify the structure of the module, and reduce the distance from the LED light emitting surface to the edge of the module to realize the design of the ultra-narrow bezel module.
  • the present invention provides a light bar buckle structure of a backlight module and a liquid crystal display thereof, and the buckle is fixed by the buckle, and the invention buckles
  • the parts are made separately, the process limitations of the overall production are discarded, and the wave soldering (SMT) process is used to solder the fasteners to the back of the LED strips, saving process investment.
  • SMT wave soldering
  • the fastener in the present invention is separately manufactured, the fastener and the LED light bar are combined to form a whole, and no new backlight assembly is added, which saves space, and the structure of the light bar and the frame is simplified, thereby simplifying the module.
  • the fastener is embedded in the frame and fastened to the card slot, thereby reducing the distance from the LED light emitting surface to the edge of the module, and realizing the design of the ultra-narrow bezel module. While the invention has been particularly shown and described with reference to the exemplary embodiments of the embodiments of the invention Various changes in form and detail.

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

Abstract

一种背光模组中LED灯条卡扣结构，用于卡扣LED灯条（300）与边框（200），LED灯条（300）包含一基板（310）及嵌合于基板（310）上的多个LED发光元件（320）；所述基板（310）背面设有至少一扣件（330），在边框（200）上对应设有与所述扣件（330）相配合的卡槽（210）；所述扣件（330）卡合在卡槽（210）内，将LED灯条（300）固定于边框（200）上。其中将扣件（330）单独制作，利用波峰焊（SMT）工艺，将扣件（330）焊接于LED灯条（300）背面结合成为整体，并没有增加新的背光组件，使LED灯条（300）及边框（200）的结构得到简化，起到简化模组结构的效果。且由于采用了卡扣的固定方式，减少了对扣件（330）和边框（200）的二次加工，节省工艺投入。同时扣件（330）嵌入边框（200）中与卡槽（210）扣合，减少LED发光面到背光模组边缘的距离，实现液晶显示器超窄边框模组设计。

Description

一种背光模组的 LED灯条卡扣结构及其液晶显示器 技术领域
本发明属于液晶显示技术领域， 尤其涉及一种背光模组 LED灯条卡扣结构 及其液晶显示器。
背景技术
背光模组为液晶显示器的关键零部件之一， 由于液晶面板本身不具发光的 能力， 因此， 需要给液晶显示装置提供背光源。 背光模组的功能即在于供应充 足的亮度及分布均匀的光源， 使液晶显示器能正常显示影像。
现有技术中大尺寸侧光式背光模组无论采用长边上下侧入光还是长边单 侧入光结构，每侧都采用至少两根 LED灯条， LED灯条分别设置在侧光式 LED 背光模组长边的两侧框架上。 以中框为例， 目前常见的固定中框的做法是在背 板上冲压凸包， 这样增加背板的厚度（0.6〜1.2mm)， 不能实现超窄边框设计的 要求。另外一种做法是不用背板，使散热铝挤外露，在散热铝挤的侧面冲凸包， 但加工困难， 且凸包高度一般在 0.5mm以内， 固定中框不够牢固（需要 1.0mm 以上）， 而固定前框更不可能 （需要 1.3mm以上）。 因此， 有必要设计一种背光模组的 LED灯条与边框固定的卡扣结构， 以 克服上述缺陷。
发明内容
本发明的目的在于提供一种背光模组的 LED灯条卡扣结构， 以简化模组结 构， 实现液晶显示器超窄边框模组设计， 减少拼接缝对液晶显示效果的影响。 为了实现上述目的， 本发明提供一种 LED灯条卡扣结构， 包括 LED灯条 及边框， LED灯条包含一基板及嵌合于基板上的多个发光元件； 其特征在于， 所述 LED灯条基板背面设有至少一扣件， 在边框上对应设有与所述扣件相配 合的卡槽； 所述扣件卡合在卡槽内， 将 LED灯条固定于边框上。 优选地， 所述扣件呈楔形。 优选地， 所述扣件材质为金属钣金或金属块。 优选地， 所述基板材质为金属或树脂类材料。 优选地， 所述扣件以波峰焊 （SMT) 方式焊接于基板背面。 优选地， 所述扣件材质为金属板金时， 扣件与灯条连接端处设置有平行于 基板的延伸部。 本发明的另一目的还在于提供一种背光模组， 其特征在于， 包括 LED灯条 卡扣结构， 所述背光模组的 LED灯条卡扣结构， 由 LED灯条及边框构成， LED 灯条包含一基板及嵌合于基板上的多个 LED发光元件， 所述基板背面设有至少 一扣件，在边框上对应设有与所述扣件相配合的卡槽，所述扣件卡合在卡槽内， 将 LED灯条固定于边框上。 优选地， 背光模组还包括散热铝挤， 所述 LED灯条通过铆钉或螺钉固定连 接于散热铝挤。 本发明的另一目的还在于提供一种液晶显示器，包括液晶面板和对应于液 晶面板设置的背光模组， 其特征在于， 所述背光模组包括 LED灯条卡扣结构， 背光模组的 LED灯条卡扣结构由 LED灯条及边框构成， LED灯条包含一基板及 嵌合于基板上的多个 LED发光元件， 所述基板背面设有至少一扣件， 在边框上 对应设有与所述扣件相配合的卡槽， 所述扣件卡合在卡槽内， 将 LED灯条固定 于边框上。
相较于现有技术， 本发明的 LED灯条卡扣结构具有以下优点： 本发明将 扣件单独制作， 舍弃了整体制作时的工艺限制， 且借用波峰焊 （SMT) 工艺， 将扣件焊接于 LED灯条背面， 节省工艺投入。 本发明中的扣件虽然单独制作， 但是扣件和 LED灯条结合在一起成为整体， 并没有增加新的背光组件， 相反 节省空间， 使灯条及边框的结构得到简化， 起到简化模组结构的效果， 同时扣 件嵌入边框中与卡槽扣合， 减少 LED发光面到模组边缘的距离， 实现超窄边 框模组设计。
附图说明 图 1为本发明的液晶显示器结构示意图。 图 2为本发明的 LED灯条与散热铝挤的固定方式示意图。 图 3为本发明的卡扣结构装配示意图。 图 4为本发明实施例 1的扣件结构剖视侧视图。 图 5为本发明实施例 2的扣件结构剖视侧视图。 图 6为本发明实施例 3的扣件结构剖视侧视图。 图 7为本发明实施例 4的扣件结构剖视侧视图。 图 8为本发明实施例 5的扣件结构剖视侧视图。
具体实施方式 为了更好地阐述本发明的技术特点和结构， 以下将结合附图， 对本发明的 具体实施方式和实施例加以详细说明， 所描述的具体实施例仅用以解释本发 明， 并非用于限定本发明的具体实施方式。 本发明背光模组的改进点主要在于 LED灯条与边框的固定方式， 本发明 的卡扣结构用于卡扣 LED灯条与背光模组中的边框， 此处当然也可以是其他 元件， 在本实施例中将详细描述使用该卡扣结构的背光模组。 请参照图 1至图 3， 本发明的背光模组用于液晶显示器 100中， 如图 1所 示，包括背光模组中的边框 200、 LED灯条 300和散热铝挤 400，散热铝挤 400 与 LED灯条 300背面相接触，用于辅助 LED灯条 300散热。由图 1可见， LED 灯条 300包含一基板 310及嵌合于基板 310上的 LED发光元件 320。参见图 2 可知， 基板 310与散热铝挤 400通过螺钉 410连接以将 LED灯条 300固定于 散热铝挤 400， 增强固定拉应力。 其中， 边框 200可以是中框或前框， 在本实 施例中， 边框 200指中框。 由图 3所示， 基板 310背面连接有至少一扣件 330， 在边框 200上对应设有与所述扣件 330相配合的卡槽 210; 所述扣件 330卡合 在卡槽 210内， 将 LED灯条 330固定于边框 200上。
具体地， 本发明的背光模组的 LED灯条卡扣结构的优选实施方式中， 根据 现有卡扣结构的特征，本实施例中的扣件 330为楔形凸块，边框 200上的卡槽 210 相应设置为矩形状的通槽， 以与扣件 330相匹配。 本实施例的扣件 330将采用金 属钣金或金属块材质单独制作， 而基板 310所用材质为金属或树脂类材料， 利 用波峰焊 (SMT)工艺可以将扣件 330焊接于 LED灯条 300背面， 其中， 扣件 330 也采用波峰焊 (SMT)焊接制作， 不仅简化了扣件 330与灯条 300的组装工序， 节 省工艺投入， 并舍弃了整体制作时的工艺限制， 提高了生产效率。
请参照图 4， 图 4揭示本发明实施例 1的扣件结构剖视侧视图， 扣件 330位于 LED灯条的基板 310背面。 本实施例中扣件 330采用金属钣金材质制成， 其中扣 件 330为一整体式结构， 包含依次相连的第一侧壁 331、 第二侧壁 332和第三侧 壁 333， 其中， 第二侧壁 332为与基板 310平行的表面， 第一侧壁 331和第三侧壁 333为位于第二侧壁 332两侧的侧表面， 且第一侧壁 331设计为斜面。 为使扣件 330与基板 310的焊接面积增大， 扣件 330与 LED灯条 300连接的侧壁还一体弯折 延伸出与基板 310平行的延伸部， 如图 4所示， 所述延伸部包含第一侧壁 331沿 基板 310向上延伸形成与基板 310接触的第一延伸部 334和第三侧壁 333沿基板 310向上延伸形成与基板 310接触的第二延伸部 335。
装配时， 扣件 330与 LED灯条 300组装好并通过螺钉 410固定于散热铝挤 400 后， 边框 200从上到下顺沿扣件 330的斜面， 即第一侧壁 331， 将扣件 330卡合于 卡槽 210中。 其中边框 200采用树脂类材料， 具有一定的弹性， 可以理解的是， 扣件 330的斜面使得扣件 330与卡槽 210的卡合更加容易。
优选地， 采用波峰焊 (SMT)工艺将扣件焊接到基板背面使两者结合在一起 成为整体， 波峰焊 (SMT)工艺可提高焊点的质量和可靠性。 组装 LED灯条和边 框时， 不需对灯条和边框进行二次加工， 只需要将已焊接在 LED灯条 300上的 扣件 330与边框 200的卡槽 210扣合便可将灯条与边框固定。特别地， 扣件 330完 全嵌入卡槽 210中与卡槽 210匹配扣合， 减少了 LED发光元件到模组边缘的距 离， 即图 3中距离 D， 从而解决了液晶模组中超窄边框设计的问题。
实施例 2
请参照图 5， 图 5揭示本发明实施例 2的扣件结构剖视侧视图。 实施例 2的扣 件结构相似于实施例 1中的扣件， 因此沿用相同的组件符号与名称， 但其不同 之处在于： 所述第一延伸部 334为第一侧壁 331沿基板 310向下延伸而形成。
实施例 3
请参照图 6， 图 6揭示本发明实施例 3的扣件结构剖视侧视图。 实施例 3的扣 件结构相似于实施例 1中的扣件， 因此沿用相同的组件符号与名称， 但其不同 之处在于： 所述第二延伸部 335为第三侧壁 333沿基板 310向下延伸而形成。 本 实施例的扣件 330呈 "几"字形与基板 310连接， 可以理解的是， 稳固性相对于 实施例 1更佳。
实施例 4 请参照图 7， 图 7揭示本发明实施例 4的扣件结构剖视侧视图。 相较于实施 例 1， 本实施例中扣件 330采用金属块材质制成， 金属块的一整面侧壁 337与基 板 310平整贴合焊接， 相对于实施例 1大大增加了扣件 330与基板 310的有效接触 面积， 从而稳固性得到极大加强。
实施例 5
请参照图 8， 图 8揭示本发明实施例 5的扣件结构剖视侧视图。 实施例 5的扣 件结构相似于实施例 4中的扣件， 因此沿用相同的组件符号与名称， 但其不同 之处在于： 本实施例中扣件 330采用中空的金属块材质制作。 相较于实施例 4， 扣件 330与基板 310的有效接触面积一样，但减少了所用材料，降低了材料成本。
基于上述背光模组的 LED灯条卡扣结构， 本发明还提出了一种液晶显示器 100， 如图 3所示， 包括前框 500、 液晶面板 600和背光模组； 所述背光模组包括 边框 200、 LED灯条 300、 散热铝挤 400、 导光板 700及光学膜片 800， 其中 LED 灯条 300和边框 200采用了如上任一项实施例中所述的背光模组的 LED灯条卡 扣结构来固定， 以起到简化模组结构的效果， 并减少 LED发光面到模组边缘的 距离， 实现超窄边框模组设计。
与现有技术中的 LED灯条与边框的固定方式相比， 本发明提供了一种背光 模组的灯条卡扣结构及其液晶显示器， 由于采用了卡扣的固定方式， 本发明将 扣件单独制作， 舍弃了整体制作时的工艺限制， 且借用波峰焊 （SMT) 工艺， 将扣件焊接于 LED灯条背面， 节省工艺投入。 本发明中的扣件虽然单独制作， 但是扣件和 LED灯条结合在一起成为整体， 并没有增加新的背光组件， 相反节 省空间， 使灯条及边框的结构得到简化， 起到简化模组结构的效果， 同时扣件 嵌入边框中与卡槽扣合， 减少 LED发光面到模组边缘的距离， 实现超窄边框模 组设计。 虽然本发明是参照其示例性的实施例被具体描述和显示的， 但是本领域的 普通技术人员应该理解， 在不脱离由权利要求限定的本发明的精神和范围的情 况下， 可以对其进行形式和细节的各种改变。

Claims

权利要求书
1、一种背光模组的 LED灯条卡扣结构， 包括 LED灯条及边框， LED灯条包 含一基板及嵌合于基板上的多个 LED发光元件， 其特征在于， 所述基板背面设 有至少一扣件， 在边框上对应设有与所述扣件相配合的卡槽， 所述扣件卡合在 卡槽内， 将 LED灯条固定于边框上。
2、 根据权利要求 1所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述扣件呈楔形。
3、 根据权利要求 2所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述扣件材质为金属钣金。
4、 根据权利要求 2所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述扣件材质为金属块。
5、 根据权利要求 1所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述基板材质为金属。
6、 根据权利要求 1所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述基板材质为树脂类材料。
7、 根据权利要求 3所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述扣件以波峰焊 （SMT) 方式焊接于基板背面。
8、 根据权利要求 4所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述扣件以波峰焊 （SMT) 方式焊接于基板背面。
9、 根据权利要求 3所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述扣件为整体式结构， 与灯条连接侧壁处设置有平行于基板的延伸部。
10、 根据权利要求 1所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述边框为中框。
11、 根据权利要求 1所述的背光模组的 LED灯条卡扣结构， 其特征在于， 所述边框为前框。
12、 一种背光模组， 其特征在于， 包括 LED灯条卡扣结构， 所述背光模组 的 LED灯条卡扣结构， 由 LED灯条及边框构成， LED灯条包含一基板及嵌合于 基板上的多个 LED发光元件， 所述基板背面设有至少一扣件， 在边框上对应设 有与所述扣件相配合的卡槽， 所述扣件卡合在卡槽内， 将 LED灯条固定于边框 上。
13、 根据权利要求 12所述的背光模组， 其特征在于， 所述扣件呈楔形。
14、 根据权利要求 13所述的背光模组， 其特征在于， 所述扣件以波峰焊 ( SMT ) 方式焊接于基板背面。
15、 根据权利要求 13所述的背光模组， 其特征在于， 所述扣件为整体式 结构， 与灯条连接侧壁处设置有平行于基板的延伸部。
16、 根据权利要求 12所述的背光模组， 其特征在于， 背光模组还包括散 热铝挤， 所述 LED灯条通过铆钉或螺钉固定连接于散热铝挤。
17、 一种液晶显示器， 包括液晶面板和对应于液晶面板设置的背光模组， 其特征在于， 所述背光模组包括 LED灯条卡扣结构， 背光模组的 LED灯条卡扣 结构由 LED灯条及边框构成， LED灯条包含一基板及嵌合于基板上的多个 LED 发光元件， 所述基板背面设有至少一扣件， 在边框上对应设有与所述扣件相配 合的卡槽， 所述扣件卡合在卡槽内， 将 LED灯条固定于边框上。
18、 根据权利要求 17所述的液晶显示器， 其特征在于， 所述扣件呈楔形。
19、 根据权利要求 18所述的液晶显示器， 其特征在于， 所述扣件以波峰 焊 （SMT ) 方式焊接于基板背面。
20、 根据权利要求 18所述的液晶显示器， 其特征在于， 所述扣件为整体 式结构， 与灯条连接侧壁处设置有平行于基板的延伸部。
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