WO2011134425A1 - 背光模组和液晶显示器 - Google Patents

背光模组和液晶显示器 Download PDF

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Publication number
WO2011134425A1
WO2011134425A1 PCT/CN2011/073516 CN2011073516W WO2011134425A1 WO 2011134425 A1 WO2011134425 A1 WO 2011134425A1 CN 2011073516 W CN2011073516 W CN 2011073516W WO 2011134425 A1 WO2011134425 A1 WO 2011134425A1
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WO
WIPO (PCT)
Prior art keywords
plate
backlight module
mating portion
back plate
liquid crystal
Prior art date
Application number
PCT/CN2011/073516
Other languages
English (en)
French (fr)
Inventor
李相稙
梁尚荣
Original Assignee
北京京东方光电科技有限公司
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 北京京东方光电科技有限公司 filed Critical 北京京东方光电科技有限公司
Priority to EP11774416.9A priority Critical patent/EP2565705A4/en
Priority to US13/377,963 priority patent/US20120105768A1/en
Priority to JP2013506480A priority patent/JP2013525982A/ja
Priority to KR1020117030996A priority patent/KR101332727B1/ko
Publication of WO2011134425A1 publication Critical patent/WO2011134425A1/zh

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Classifications

    • 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
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • 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

Definitions

  • Embodiments of the present invention relate to a backlight module and a liquid crystal display. Background technique
  • the liquid crystal display is a commonly used flat panel display, and the backlight module is an important component in the liquid crystal display.
  • the light group as a light source in the backlight module is one of the important components of the backlight module.
  • the backlight module 10 includes: a lamp group (usually composed of 2-3 lamps) 11 , a light guide plate 12 and a lamp reflector 13 , and the light emitted from the lamp group 11 is reflected by the lamp reflector 13
  • a lamp group usually composed of 2-3 lamps
  • two lamp groups 11 are disposed in the spacers 14 to maintain the fixing and buffering action of the lamp group 11, and the spacers 14 may be made of a flexible material.
  • the backlight module 10 further includes an optical film layer 15 disposed above the light guide plate 12 and a back plate 17 below.
  • the liquid crystal panel 16 is disposed above the backlight module 10 for display.
  • the back panel 17, the upper frame 18 and the outer frame 19 are provided to fix the backlight module 10 and the display panel 16.
  • the light source emitted from the light guide plate 12 is emitted through the optical film layer 15 and the liquid crystal panel 16.
  • the components of the above backlight module are usually tightly arranged without excessive gaps therebetween. Therefore, during the transportation process, if the external force F is applied by the direction of the arrow in FIG. 1, the interval 14 between the lamp group 11 and the adjacent light guide plate 12, the upper frame 18, and the back plate 17 is reduced. The reflector 13 is deformed in the direction of the light guide plate 12. If the lamp group 11 is subjected to a crushing collision, the lamp group 11 is damaged, and the backlight module 10 cannot operate normally. When the size of the liquid crystal display is large, the length of the lamp reflecting plate 13 is also lengthened accordingly, and the deformation is more likely to occur, i.e., the lamp group 11 is more easily damaged.
  • Embodiments of the present invention provide a backlight module and a liquid crystal display to avoid grounding defects caused by deformation of the reflecting plate and the backing plate, and can induce instantaneous high-voltage noise and prevent damage of the lamp group. Bad.
  • the embodiment of the present invention provides a backlight module, including: a light source, a reflector, a light guide plate, and a back plate, wherein the light source is disposed on a light incident side of the light guide plate, and the reflector is disposed around the light a first matching portion is disposed on the reflective plate, and a second matching portion is disposed on the reflective plate, and the first matching portion is disposed on the outer side of the group, the back plate is disposed on the lower side of the reflective plate and the light guide plate Cooperating with the second mating portion, the reflector and the backing plate are fixedly connected, and instantaneous high-voltage noise can be induced.
  • the embodiment of the present invention further provides a liquid crystal display, comprising a liquid crystal panel and a backlight module disposed behind the liquid crystal panel, the backlight module comprising: a light source, a reflective plate, a light guide plate and a back plate, the light source
  • the reflector is disposed on an outer side of the light guide plate, and the reflector is disposed on an outer side of the light source.
  • the back plate is disposed on a lower side of the reflector and the light guide plate, and the reflector is disposed first.
  • a second mating portion is disposed on the backing plate, and the first mating portion and the second mating portion are coupled to each other to connect and fix the reflector and the backboard.
  • FIG. 1 is a schematic cross-sectional view of a backlight module of the prior art
  • FIG. 2A is a schematic cross-sectional view of a liquid crystal display including a backlight module according to Embodiment 1 of the present invention
  • FIG. 2B is a right side view of FIG. 2A;
  • FIG. 3 is a schematic structural view of a liquid crystal display including a backlight module according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic structural view of a liquid crystal display including a backlight module according to Embodiment 3 of the present invention
  • FIG. 5B is a schematic structural view of the reflector when the reflector is assembled on the backplane according to Embodiment 3 of the present invention.
  • An embodiment of the present invention provides a backlight module including a light source, a reflector, a light guide plate, and a back plate.
  • the light source lamp group is disposed on a light incident side of the light guide plate, and the reflector is surrounded by the lamp.
  • the embodiment of the present invention further provides a liquid crystal display comprising a liquid crystal panel and a backlight module disposed behind the liquid crystal panel, wherein the backlight module uses the structure in the embodiment of the present invention.
  • the backlight module has a structure in which a first mating portion structure is added to a portion of the reflecting plate below the reflecting plate without affecting the light path, and the second mating portion structure on the back plate is matched to the liquid crystal display. It will not deform when subjected to momentary external force, ensure the internal space of the reflector, prevent the lamp set from being damaged, or prevent the separation of the reflector and the backboard, strengthen the stability of the grounding, and induce the instantaneous high-voltage noise to avoid grounding. The occurrence of transient high-voltage noise caused by instability.
  • first mating portion and the second mating portion are made of a conductive material, which can better achieve electrical connection, can induce instantaneous high-voltage noise dispersion, and avoid instantaneous high-voltage noise caused by unstable grounding. occur.
  • FIG. 2A is a schematic cross-sectional view of a liquid crystal display including a backlight module according to Embodiment 1 of the present invention.
  • Figure 2B is a right side view of Figure 2A.
  • the backlight module 20 includes: a lamp group 21, a lamp reflector 23, a light guide plate 22, and a back plate 27.
  • the lamp group 21 is disposed on a side of the light guide plate 22 as a light incident side.
  • the lamp reflector 23 is an example of a reflector in the present invention, which is disposed outside the lamp group 21, and the back plate 27 is disposed on the lower side of the lamp reflector 23 and the light guide plate 22.
  • a first engaging portion 231 is disposed on the lamp reflector 23, and a second mating portion 271 is disposed on the back plate 27.
  • the first mating portion 231 and the second mating portion 271 are matched and fixed.
  • the first engaging portion 231 is one or a plurality of protruding rings formed in a middle portion of the lamp reflecting plate 23 adjacent to the back plate 27.
  • the lamp group 21 is, for example, a cold cathode fluorescent lamp (CCFL) as a light source of the backlight module, but it may be replaced with other light sources such as a light emitting diode (LED) or the like.
  • CCFL cold cathode fluorescent lamp
  • the liquid crystal panel 26 is disposed on the backlight module 20 for display.
  • the optical film layer 15 is disposed above the light guide plate 12, and includes, for example, a prism film, a scattering film, or the like, or a laminate thereof.
  • the back panel 27, the upper frame 28, and the outer frame 29 are provided to fix the backlight module 20 and the display panel 26.
  • the light source emitted from the light guide plate 22 is emitted through the optical film layer 25 and the liquid crystal panel 26.
  • the first engaging portion 231 of the lamp reflecting plate 23 is caught on the second engaging portion 271 of the back plate 27 to prevent deformation of the lamp reflecting plate 23. Therefore, it is possible to prevent the lamp reflecting plate 23 from moving in the direction of the light guide plate 22, thereby ensuring that the interval 24 inside the lamp reflecting plate 23 is constant and preventing the breakage of the lamp group 21.
  • the first engaging portion 231 of the lamp reflector 23 is caught on the second engaging portion 271 of the back plate 27, and the separation of the lamp reflector 23 and the back plate 27 is prevented, and the reinforcement is enhanced.
  • the stability of the grounding avoids the occurrence of transient high-voltage noise caused by unstable grounding.
  • the first mating portions 231 of the lamp reflector 23 may be provided in plurality as required, for example, three. In this case, a plurality of second mating portions 271 and A mating portion 231 is adapted.
  • FIG. 3 is a schematic structural diagram of a liquid crystal display including a backlight module according to Embodiment 2 of the present invention.
  • the backlight module 30 includes: a lamp group 31 , a lamp reflector 33 , a light guide plate 32 , and a back plate 37 .
  • the lamp group 31 is disposed on one side of the light guide plate 32 .
  • the reflector plate 33 is disposed on the outer side of the lamp group 31.
  • the back plate 37 is disposed on the lower side of the lamp reflector 33 and the light guide plate 32.
  • the first reflector portion 331 is disposed on the lamp reflector 33.
  • the second back plate 37 is provided with a second The mating portion 371, the first mating portion 331 and the second mating portion 371 are coupled to each other to connect and fix the lamp reflector 33 and the back plate 37.
  • the first engaging portion 331 is a protrusion formed by bending the end of the lamp reflector 33 close to the back plate 37 toward the back plate 37 side.
  • the other components of the liquid crystal display including the backlight module 30, including the optical film layer, the liquid crystal panel, the upper frame, the outer frame, and the like are the same as those in the first embodiment, and will not be described herein for the sake of convenience.
  • the first engaging portion 331 of the lamp reflecting plate 33 is caught on the second engaging portion 371 of the back plate 37 to prevent deformation of the lamp reflecting plate 33. Therefore, it is possible to prevent the lamp reflecting plate 33 from moving in the direction of the light guide plate 32, thereby ensuring that the interval 34 inside the lamp reflecting plate 33 is constant and preventing the breakage of the lamp group 31.
  • the first engaging portion 331 of the lamp reflecting plate 33 is caught on the second engaging portion 371 of the back plate 37, and the separation of the lamp reflecting plate 33 and the back plate 37 is prevented, and the reinforcement is enhanced.
  • the stability of the grounding can induce instantaneous high-voltage noise, avoiding the occurrence of instantaneous high-voltage noise caused by unstable grounding.
  • the backlight module includes: a lamp group 41, a lamp reflector 43, a light guide plate 42 and a back plate 47.
  • the lamp group 41 is disposed on one side of the light guide plate 42, and the lamp reflects
  • the plate 43 is disposed on the outer side of the lamp group 41.
  • the back plate 47 is disposed on the lower side of the lamp reflector 43 and the light guide plate 42.
  • the lamp reflector 43 is provided with a first mating portion 431.
  • a second mating portion 471 is disposed on the back plate 47.
  • the first mating portion 431 and the second mating portion 471 cooperate to fix and connect the lamp reflector 43 and the back plate 47.
  • the first engaging portion 431 is a folded plate, and the folded plate includes a first bent portion 432 and a second bent portion 433.
  • the first bent portion 432 is perpendicular to the back plate 47.
  • the second bent portion 433 is parallel to the back plate 47 , and one end of the first bent portion 432 is connected to an end of the lamp reflector 43 near the back plate 47 , and the first bent portion 432 The other end of the second bent portion 433 is connected to the other end of the second bent portion 433.
  • liquid crystal display including the backlight module 40, including the optical film layer, the liquid crystal panel, the upper frame, the outer frame, and the like are the same as those of the first embodiment, and therefore will not be described again for the sake of convenience.
  • FIG. 5A is a schematic structural view of a lamp reflector according to a third embodiment of the present invention when the lamp reflector is not assembled on the backboard
  • FIG. 5B is a schematic structural view of the lamp reflector according to the third embodiment of the present invention.
  • the second fitting portion 471 on the back plate 47 has a second bending portion 433 capable of being worn.
  • the matching hole 472 and the engaging portion 473 that engages the first bent portion 432.
  • the first engaging portion 431 of the lamp reflecting plate 43 is caught on the second engaging portion 471 of the backing plate 47 to prevent deformation of the lamp reflecting plate 43. Therefore, it is possible to prevent the lamp reflecting plate 43 from moving in the direction of the light guide plate 42, thereby ensuring that the interval 44 inside the lamp reflecting plate 43 is constant, preventing damage of the lamp group 41; and when the liquid crystal display is subjected to an instantaneous impact force, the lamp reflecting plate 43
  • the first engaging portion 431 is caught on the second engaging portion 471 of the back plate 47, and the separation between the lamp reflecting plate 43 and the back plate 47 is prevented, the stability of the grounding is enhanced, and the instantaneous high voltage caused by the unstable grounding is avoided. The occurrence of noise phenomena.
  • the lamp group as the light source in the above embodiment is disposed on the side of the light guide plate (side illumination type) as an example, the light source (for example, CCFL or LED, etc.) may be disposed on the lower side of the light guide plate (straight down type).
  • the structure of the embodiment of the present invention is still applicable, wherein the reflector is disposed under or at the side of the light source, and the back panel is disposed on the lower side of the reflector and the light guide plate, and the first matching portion is disposed on the reflector, the back panel A second mating portion is disposed on the first mating portion and the second mating portion to cooperate to fix the lamp reflector and the back panel.

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

Description

背光模组和液晶显示器 技术领域
本发明的实施例涉及一种背光模组和液晶显示器。 背景技术
液晶显示器是目前常用的平板显示器， 其中背光模组是液晶显示器中的 重要组成部件。背光模组中作为光源的灯组是背光模组的重要组成部分之一。
图 1为现有技术的背光模组截面示意图。如图 1所示，背光模组 10包括： 灯组（通常釆用 2-3个灯管组成） 11 , 导光板 12和灯反射板 13 , 从灯组 11 射出的光线经过灯反射板 13反射到导光板 12上，两个灯组 11设置在间隔物 14里， 来保持灯组 11的固定和起緩冲作用， 此间隔物 14可以是柔性材料制 成。 背光模组 10还包括设置在导光板 12之上的光学膜层 15和之下的背板 17。 液晶面板 16设置在背光模组 10之上， 用于显示。 背板 17、 上框架 18 和外框架 19设置来固定背光模组 10以及显示面板 16。 从导光板 12上发出 的光源经过光学膜层 15和液晶面板 16射出。
上述背光模组的各个元件间通常设置紧密，之间没有多余的间隙。 因此， 在运输的过程中， 如果受到如图 1 中箭头方向的瞬间外力 F作用， 灯组 11 与相邻的导光板 12、 上框架 18、 背板 17之间的间隔 14会减小， 灯反射板 13向导光板 12的方向变形， 若灯组 11受到挤压碰撞， 将会导致灯组 11的 破损， 背光模组 10 无法正常工作。 当液晶显示器的尺寸很大时， 灯反射板 13的长度也要相应变长， 则变形就更加容易发生， 即灯组 11更容易被损坏。
另外， 如图 1所示， 在上述结构中， 若受到瞬间外力作用， 且灯反射板 13和背板 17发生变形，则就会导致灯反射板 13的接地与电路接地的背板 17 脱离， 液晶显示器显示的画面上就会发生瞬间高压噪声现象。 发明内容
本发明的实施例提供一种背光模组和液晶显示器， 以避免反射板和背板 的变形而导致的接地不良， 并可将瞬间高压噪声诱导出去， 并防止灯组的损 坏。
本发明的实施例提供了一种背光模组， 包括： 光源、 反射板、 导光板和 背板， 所述光源设置在所述导光板的入光侧， 所述反射板围设在所述灯组的 外侧， 所述背板设置在所述反射板与导光板的下侧边， 所述反射板上设置第 一配合部， 所述背板上设置第二配合部， 所述第一配合部和所述第二配合部 相配合， 连接固定所述反射板和所述背板， 并可将瞬间高压噪声诱导出去。
本发明的实施例还提供了一种液晶显示器， 包括液晶面板和设置在所述 液晶面板后方的背光模组， 所述背光模组包括： 光源、 反射板、 导光板和背 板， 所述光源设置在所述导光板的入光侧， 所述反射板围设在所述光源的外 侧， 所述背板设置在所述反射板与导光板的下侧边， 所述反射板上设置第一 配合部， 所述背板上设置第二配合部， 所述第一配合部和所述第二配合部相 配合， 连接固定所述反射板和所述背板。 附图说明
图 1为现有技术的背光模组截面示意图；
图 2A为本发明实施例一的包括背光模组的液晶显示器的截面示意图； 图 2B为图 2A的右视图；
图 3为本发明实施例二的包括背光模组的液晶显示器的结构示意图； 图 4为本发明实施例三的包括背光模组的液晶显示器的结构示意图； 图 5A为本发明实施例三中灯反射板未组装在背板上时的结构示意图； 图 5B为本发明实施例三中灯反射板组装在背板上时的结构示意图。 附图标记：
lO- -背光模组
l l— -灯组； 12- -导光板； 13- -灯反射板；
14- -间隔物； 15- -光学膜层； 16- -液晶面板；
17- -背板； 18- -上框架； 19- -外框架；
20- -背光模组
21- -灯组； 22- -导光板； 23- -灯反射板；
24- -间隔物； 25- -光学膜层； 26- -液晶面板；
27- -背板； 28- -上框架； 29- -外框架；
231-一第一配合部； 271-一第二配合部； 271-一第二配合 ·
31- -灯组； 32- -导光板；
33- -灯反射板； 34- -间隔物； 37- -背板； 331 第一配合部; 371 第二配合部; 41 灯组； 42—导光板； 43—灯反射板； 44 间隔；
47—背板； 431 第一配合部; 432 第一弯折部;
433—第二弯折部; 471 第二配合部; 472—适配孔；
473 "" ^合部。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例中的附图， 对本发明实施例中的技术方案进行清楚、 完整地描述， 显然， 所描述的实施例是本发明一部分实施例， 而不是全部的实施例。 基于 本发明中的实施例， 本领域普通技术人员在没有作出创造性劳动前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
当背光模组在运输过程中受到瞬间的外部冲击力时， 为了避免与灯组邻 设的反射板变形， 使得位于反射板和导光板之间的间隔空间消失， 灯组被损 坏，或者导致反射板的接地与电 妻地的背板脱离，发生瞬间高压噪声现象。 本发明的实施例提供一种背光模组， 包括光源、 反射板、 导光板和背板， 所 述光源灯组设置在所述导光板的入光侧，所述反射板围设在所述灯组的外侧， 所述背板设置在所述反射板的外侧， 所述反射板上设置第一配合部， 所述背 板上设置第二配合部， 所述第一配合部和所述第二配合部相配合， 连接固定 所述反射板和所述背板。 本发明的实施例还提供了一种液晶显示器， 包括液 晶面板和设置在所述液晶面板后方的背光模组， 这里的背光模组釆用本发明 实施例中的结构。
上述背光模组的结构， 能够在不影响光路径的情况下， 在反射板下方的 反射板部分上增加第一配合部结构， 与背板上的第二配合部结构相配合， 从 而在液晶显示器受到瞬间外力时不会变形， 确保反射板的内部空间， 防止灯 组被损坏， 或者防止反射板和背板的分离， 强化了接地的稳定性， 并可将瞬 间高压噪声诱导出去，避免了接地不稳定而引起的瞬间高压噪声现象的发生。
进一步地， 第一配合部和第二配合部为导电性材料制成， 可以更好地实 现电性连接， 可将瞬间高压噪声分散诱导出去， 避免了接地不稳定而引起的 瞬间高压噪声现象的发生。
图 2A为本发明实施例一的包括背光模组的液晶显示器的截面示意图。 图 2B为图 2A的右视图。 如图 2A所示， 该背光模组 20包括： 灯组 21、 灯反射板 23、 导光板 22 和背板 27, 所述灯组 21设置在所述导光板 22的作为入光侧的一侧边， 所述 灯反射板 23为本发明中反射板的一个示例， 其围设在所述灯组 21的外侧， 所述背板 27设置在所述灯反射板 23与导光板 22的下侧边，其中所述灯反射 板 23上设置第一配合部 231 ,所述背板 27上设置第二配合部 271 ,所述第一 配合部 231和所述第二配合部 271相配合，连接固定所述灯反射板 23和所述 背板 27。 如图 2B所示， 所述第一配合部 231为一个或多个突起环， 形成在 靠近所述背板 27的所述灯反射板 23的中部。在图中，灯组 21例如为冷阴极 荧光灯（CCFL )作为该背光模组的光源， 然而其可以使用其他光源替代， 例如发光二极管 （LED )等。
在包括背光模组 20的液晶显示器中， 液晶面板 26设置在背光模组 20 之上， 用于显示。 光学膜层 15设置在导光板 12之上， 例如包括棱镜膜、 散 射膜等或它们的叠层。 背板 27、 上框架 28和外框架 29设置来固定背光模组 20以及显示面板 26。从导光板 22上发出的光源经过光学膜层 25和液晶面板 26射出。
当该液晶显示器受到瞬间冲击力时，灯反射板 23的第一配合部 231卡在 背板 27的第二配合部 271上， 起到阻止灯反射板 23变形的作用。 因此， 能 够防止灯反射板 23向导光板 22方向移动，从而可以确保灯反射板 23内部的 间隔 24不变，防止灯组 21的破损。并且当该液晶显示器受到瞬间冲击力时， 灯反射板 23的第一配合部 231卡在背板 27的第二配合部 271上， 还可以防 止灯反射板 23和背板 27的分离， 强化了接地的稳定性， 避免了接地不稳定 而引起的瞬间高压噪声现象的发生。
另外， 如图 2B所示， 灯反射板 23上的第一配合部 231可以按照需求设 置多个， 例如 3个， 此时需要在背板 27上也对应设置多个第二配合部 271 与第一配合部 231相适配。
图 3为本发明实施例二的包括背光模组的液晶显示器的结构示意图。 如 图 3所示， 该背光模组 30包括： 灯组 31、 灯反射板 33、 导光板 32和背板 37,所述灯组 31设置在所述导光板 32的一侧边，所述灯反射板 33围设在所 述灯组 31的外侧， 所述背板 37设置在所述灯反射板 33与导光板 32的下侧 边， 其中所述灯反射板 33上设置第一配合部 331 , 所述背板 37上设置第二 配合部 371 , 所述第一配合部 331和所述第二配合部 371相配合， 连接固定 所述灯反射板 33和所述背板 37。 其中， 所述第一配合部 331为一突部， 所 述突部通过将所述灯反射板 33靠近所述背板 37的端部向所述背板 37侧弯折 形成。
包括上述背光模组 30的液晶显示器的其他部件， 包括光学膜层、液晶面 板、 上框架、 外框架等与实施例一相同， 为了方便起见， 这里将不再赘述。
当该液晶显示器受到瞬间冲击力时，灯反射板 33的第一配合部 331卡在 背板 37的第二配合部 371上， 起到阻止灯反射板 33变形的作用。 因此， 能 够防止灯反射板 33向导光板 32方向移动，从而可以确保灯反射板 33内部的 间隔 34不变，防止灯组 31的破损。并且当该液晶显示器受到瞬间冲击力时， 灯反射板 33的第一配合部 331卡在背板 37的第二配合部 371上， 还可以防 止灯反射板 33和背板 37的分离， 强化了接地的稳定性， 并可将瞬间高压噪 声诱导出去， 避免了接地不稳定而引起的瞬间高压噪声现象的发生。
图 4为本发明实施例三的包括背光模组的液晶显示器的结构示意图。 如 图 4所示， 该背光模组包括： 灯组 41、 灯反射板 43、 导光板 42和背板 47, 所述灯组 41设置在所述导光板 42的一侧边，所述灯反射板 43围设在所述灯 组 41的外侧， 所述背板 47设置在所述灯反射板 43与导光板 42的下侧边， 其中所述灯反射板 43上设置第一配合部 431 , 所述背板 47上设置第二配合 部 471 , 所述第一配合部 431和所述第二配合部 471相配合， 连接固定所述 灯反射板 43和所述背板 47。 其中， 所述第一配合部 431为一折板， 所述折 板包括第一弯折部 432和第二弯折部 433 , 所述第一弯折部 432垂直于所述 背板 47,所述第二弯折部 433平行于所述背板 47,所述第一弯折部 432的一 端连接所述灯反射板 43靠近所述背板 47的端部， 所述第一弯折部 432的另 一端穿过所述背板 47连接所述第二弯折部 433的一端。
包括上述背光模组 40的液晶显示器的其他部件， 包括光学膜层、液晶面 板、 上框架、 外框架等结构与实施例一相同， 因此为了方便起见， 这里将不 再赘述。
图 5A为本发明实施例三中灯反射板未组装在背板上时的结构示意图， 图 5B为本发明实施例三中灯反射板组装在背板上时的结构示意图。 如图 5A 和图 5B所示， 背板 47上的第二配合部 471具有能够使得第二弯折部 433穿 过的适配孔 472以及将第一弯折部 432卡合的卡合部 473。
当该液晶显示器受到瞬间冲击力时，灯反射板 43的第一配合部 431卡在 背板 47的第二配合部 471上， 起到阻止灯反射板 43变形的作用。 因此， 能 够防止灯反射板 43向导光板 42方向移动，从而可以确保灯反射板 43内部的 间隔 44不变，防止灯组 41的破损； 并且当该液晶显示器受到瞬间冲击力时， 灯反射板 43的第一配合部 431卡在背板 47的第二配合部 471上， 还可以防 止灯反射板 43和背板 47的分离， 强化了接地的稳定性， 避免了接地不稳定 而引起的瞬间高压噪声现象的发生。
虽然上述实施例中也作为光源的灯组设置在导光板侧边（侧面照射型） 为例进行了说明，但是光源（例如 CCFL或 LED等）可设置在导光板下侧（直 下型）时， 本发明的实施例的结构依然适用， 其中反射板设置在光源之下或、 侧面边， 背板设置在灯反射板与导光板的下侧边， 灯反射板上设置第一配合 部， 背板上设置第二配合部， 第一配合部和第二配合部相配合， 连接固定灯 反射板和背板。
最后应说明的是： 以上实施例仅用以说明本发明的技术方案， 而非对其 限制； 尽管参照前述实施例对本发明进行了详细的说明， 本领域的普通技术 人员应当理解： 其依然可以对前述各实施例所记载的技术方案进行修改， 或 者对其中部分技术特征进行等同替换； 而这些修改或者替换， 并不使相应技 术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权利要求书
1、 一种背光模组， 包括：
光源；
反射板
导光板； 和
背板， 其中， 所述光源设置在所述导光板的入光侧， 所述反射板围设在 所述光源的外侧， 所述背板设置在所述反射板与导光板的下侧边；
其中，所述反射板上设置有第一配合部，所述背板上设置有第二配合部， 所述第一配合部和所述第二配合部相配合，连接固定所述反射板和所述背板。
2、根据权利要求 1所述的背光模组， 其中， 所述第一配合部和所述第二 配合部为导电性材料。
3、根据权利要求 1所述的背光模组， 其中， 所述第一配合部为一个或多 个突起环， 形成在靠近所述背板的所述反射板的中部。
4、 根据权利要求 1所述的背光模组， 其中， 所述第一配合部为一突部， 所述突部通过将所述反射板靠近所述背板的端部向所述背板侧弯折形成。
5、 根据权利要求 1所述的背光模组， 其中， 所述第一配合部为一折板， 所述折板包括第一弯折部和第二弯折部，
所述第一弯折部垂直于所述背板， 所述第二弯折部平行于所述背板， 所 述第一弯折部的一端连接所述反射板靠近所述背板的端部， 所述第一弯折部 的另一端穿过所述背板连接所述第二弯折部的一端。
6、一种液晶显示器， 包括液晶面板和设置在所述液晶面板后方的背光模 组， 其中， 所述背光模组包括：
光源；
反射板；
导光板； 和
背板， 其中， 所述光源设置在所述导光板的入光侧， 所述反射板围设在 所述光源的外侧， 所述背板设置在所述反射板的外侧， 其特征在于， 所述反 射板上设置有第一配合部， 所述背板上设置有第二配合部， 所述第一配合部 和所述第二配合部相配合， 连接固定所述反射板和所述背板。
7、根据权利要求 6所述的液晶显示器， 其中， 所述第一配合部为一个或 多个突起环， 形成在所述反射板的中部。
8、根据权利要求 6所述的液晶显示器，其中，所述第一配合部为一突部， 所述突部通过将所述反射板靠近所述背板的端部向所述背板侧弯折形成。
9、根据权利要求 6所述的液晶显示器，其中，所述第一配合部为一折板， 所述折板包括第一弯折部和第二弯折部，
所述第一弯折部垂直于所述背板， 所述第二弯折部平行于所述背板， 所 述第一弯折部的一端连接所述反射板靠近所述背板的端部， 所述第一弯折部 的另一端穿过所述背板连接所述第二弯折部的一端。
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