WO2013134969A1 - 背光模组及液晶显示器 - Google Patents

背光模组及液晶显示器 Download PDF

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Publication number
WO2013134969A1
WO2013134969A1 PCT/CN2012/073057 CN2012073057W WO2013134969A1 WO 2013134969 A1 WO2013134969 A1 WO 2013134969A1 CN 2012073057 W CN2012073057 W CN 2012073057W WO 2013134969 A1 WO2013134969 A1 WO 2013134969A1
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WO
WIPO (PCT)
Prior art keywords
electromagnetic shielding
backlight module
front frame
component
plastic
Prior art date
Application number
PCT/CN2012/073057
Other languages
English (en)
French (fr)
Inventor
黄冲
程加河
Original Assignee
深圳市华星光电技术有限公司
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.)
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Publication date
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 US13/502,743 priority Critical patent/US20150002785A1/en
Priority to DE112012006026.1T priority patent/DE112012006026B4/de
Publication of WO2013134969A1 publication Critical patent/WO2013134969A1/zh

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    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • 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
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0045—Casings being rigid plastic containers having a coating of shielding material
    • 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
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0054—Casings specially adapted for display applications
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133334—Electromagnetic shields
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a backlight module and a liquid crystal display.
  • FIG. 1 is a schematic structural diagram of a backlight module in the prior art.
  • the backlight module includes a front frame 11, a liquid crystal panel 12, a back plate 13, a chip component 14 (such as a chip or a film flip chip), a light source 15, an optical component 16 (such as a light guide plate, an optical film), and a plastic frame 17, and the like.
  • the back plate 13 supports the optical component 16 and the plastic frame 17
  • the plastic frame 17 supports the liquid crystal panel 12 and supports the front frame 11 .
  • the light source 15 is disposed on the inner side of the sidewall of the back plate 13.
  • the chip component 14 inputs a control signal to control a plurality of liquid crystal cells of the liquid crystal panel 12 to continuously switch the twist angle of the liquid crystal molecules.
  • the light emitted by the light source 15 is scattered by the optical component 16 and enters the liquid crystal panel 12 to realize backlight supply of the backlight module and color conversion of the liquid crystal panel 12.
  • the front frame 11 can be formed of a metal material or a plastic material.
  • the front frame 11 is mostly made of plastic material, but after using the plastic material, once the external electromagnetic interference exists, the front frame 11 of the plastic material cannot electromagnetic interference to the outside (electromagnetic The interference, EMI) is shielded, so that the chip component 14 is easily interfered by external electromagnetic interference, resulting in abnormal control signals, thereby affecting the picture display quality of the liquid crystal display.
  • EMI electromagnetic The interference
  • An object of the present invention is to provide a backlight module to solve the problem that the front panel of the plastic material cannot form an effective protection for the chip component, and the chip component is highly susceptible to external electromagnetic interference, resulting in abnormal control signals.
  • the technical problem of the problem is to provide a backlight module to solve the problem that the front panel of the plastic material cannot form an effective protection for the chip component, and the chip component is highly susceptible to external electromagnetic interference, resulting in abnormal control signals.
  • the invention is a backlight module, which comprises a plastic front frame, a plastic frame, a back plate and a chip assembly.
  • the chip assembly is disposed between the plastic front frame and the plastic frame, wherein:
  • the backlight module further includes an electromagnetic shielding component disposed between the plastic front frame and the chip component, the electromagnetic shielding component being electrically connected to the backboard to form the The electromagnetic shielding of the chip component surrounds;
  • the electromagnetic shielding component is used to isolate external electromagnetic interference with the chip component.
  • the electromagnetic shielding member is disposed on the plastic front frame.
  • the electromagnetic shielding member is attached or mounted on the inner surface of the plastic front frame.
  • the electromagnetic shielding member is a metal cover or a metal mesh cover.
  • the electromagnetic shielding member is integrally formed inside the plastic front frame.
  • Another object of the present invention is to provide a backlight module to solve the problem that the front frame of the plastic material cannot form an effective protection for the chip component in the prior art, so that the chip component is highly susceptible to external electromagnetic interference, resulting in abnormal control signals.
  • the present invention is a backlight module, which comprises a plastic front frame, a plastic frame and a chip assembly, and the chip assembly is disposed between the plastic front frame and the plastic frame;
  • the backlight module further includes an electromagnetic shielding component disposed around the chip component for isolating external electromagnetic interference with the chip component.
  • the electromagnetic shielding component is disposed between the plastic front frame and the chip component, and is disposed on the plastic front frame.
  • the electromagnetic shielding component is fixed to the plastic front frame by fitting or inlaying.
  • the electromagnetic shielding member is a metal cover or a metal mesh cover.
  • the electromagnetic shielding member is integrally formed inside the plastic front frame.
  • the backlight module further includes a back plate, and the electromagnetic shielding member is electrically connected to the back plate to form an electromagnetic shielding surround of the chip assembly.
  • the present invention is a liquid crystal display.
  • the liquid crystal panel includes a backlight module.
  • the backlight module includes a plastic front frame, a plastic frame, and a chip assembly.
  • the chip assembly is disposed in front of the plastic.
  • the backlight module further includes an electromagnetic shielding component, and the electromagnetic shielding component is adjacent to the chip component for isolating external electromagnetic interference with the chip component.
  • the electromagnetic shielding component is disposed between the plastic front frame and the chip component, and is disposed on the plastic front frame.
  • the electromagnetic shielding member is fixed to the plastic front frame by fitting or inlaying.
  • the electromagnetic shielding member is a metal cover or a metal mesh cover.
  • the electromagnetic shielding member is integrally formed inside the plastic front frame.
  • the invention provides an electromagnetic shielding component around the chip component, and when the front frame is made of a plastic material, the electromagnetic shielding component can prevent external electromagnetic interference to the chip component, thereby ensuring control of the chip component.
  • the stability of the signal ensures the quality of the picture display.
  • FIG. 1 is a schematic structural view of a backlight module in the prior art
  • FIG. 2 is a schematic structural view of a first preferred embodiment of a backlight module according to the present invention
  • FIG 3 is a schematic structural view of a second preferred embodiment of a backlight module of the present invention.
  • FIG. 2 is a schematic structural view of a first preferred embodiment of a backlight module according to the present invention.
  • the backlight module includes a plastic front frame 21, a plastic frame 22, a chip assembly 23, a back plate 24, a light source 25, an electromagnetic shielding member 26, an optical assembly 27, and a liquid crystal panel 28.
  • the back plate 24 includes a vertically disposed side. Wall 241.
  • the plastic frame 22 is disposed on the outer side of the side wall 241 and supported by the side wall 241.
  • the liquid crystal panel 28 is supported on the plastic frame 22.
  • the light source 25 is disposed on the inner side of the sidewall 241.
  • the light source 25 may be a one-side light source, for example, a circuit board light strip with multiple light emitting diodes (LEDs). Bar).
  • the chip component 23 is disposed outside the plastic frame 22 and connected to the light source 25 through the plastic frame 22 and the sidewall 241.
  • the plastic frame 22 further supports the plastic front frame 21 , and the chip component 23 is disposed between the plastic front frame 21 and the plastic frame 22 .
  • the electromagnetic shielding component 26 is adjacent to the chip component 23 and disposed between the plastic front frame 21 and the chip component 23 for isolating and preventing external electromagnetic signals from interfering with the chip component 23.
  • the electromagnetic shielding member 26 is disposed inside the plastic front frame 21.
  • the electromagnetic shielding component 26 is preferably attached or inlaid to the inner side of the plastic front frame 21, and may be disposed on the plastic front frame 21 in other manners, such as insert molding (Insert).
  • the Molding method is integrally molded with the plastic front frame 21, and is not enumerated here.
  • the electromagnetic shielding component 26 can also be electrically connected to the backboard 24 (not shown) to form an electromagnetic shielding surround of the chip component 23 to provide better shielding of external electromagnetic effects.
  • the electromagnetic shielding component 26 can also be extended and fixed to an outer side surface (not shown) of the sidewall 241 of the plastic frame 22 such that the electromagnetic shielding component 26 surrounds the chip component 23 .
  • an outer side surface not shown
  • the electromagnetic shielding component 26 surrounds the chip component 23 .
  • the electromagnetic shielding member 26 is a metal mesh cover.
  • the electromagnetic shielding component 26 can also be a metal cover, or other materials or other structures, as long as it can shield the external electromagnetic, and will not be enumerated here.
  • the above metal material is, for example, copper, iron, nickel, gold, silver or other metals and alloys thereof.
  • the chip component 23 is preferably a core particle soft film package (Chip On Film, COF) structure, that is, the source driver chip of the backlight module is fixed on the flexible circuit board (Flexible Circuit Board) , FCB), one end of the chip component 23 is electrically connected to the liquid crystal panel 28, and the other end thereof is connected to a driving circuit board of the liquid crystal display (Printed Circuit Board) , PCB).
  • COF Chip On Film
  • the working principle of the first preferred embodiment of the backlight module shown in FIG. 2 is as follows:
  • a plurality of liquid crystal cells of the liquid crystal panel 28 are controlled by the chip component 23 to control the respective liquid crystal molecules to continuously switch the twist angle of the liquid crystal molecules, and the light source 25 emits a backlight.
  • the light emitted from the light source 25 is uniformly scattered by the optical component 27 and enters the liquid crystal panel 28, and determines which color light is finally output according to the distortion angle of the liquid crystal molecules in the liquid crystal cell, thereby realizing the backlight module.
  • the electromagnetic shielding component 26 When there is external electromagnetic interference, such as a mobile phone user is in a call or the like around the liquid crystal display, since the electromagnetic shielding component 26 is close to the chip component 23 and disposed between the plastic front frame 21 and the chip component 23, The electromagnetic shielding component 26 is a metal mesh cover. Therefore, the electromagnetic shielding component 26 can effectively shield the external electromagnetic signal to isolate and prevent external electromagnetic interference to the chip component 23, and ensure the chip component 23. The control signal is normal, thereby ensuring the picture display quality of the liquid crystal display.
  • FIG 3 is a schematic structural view of a second preferred embodiment of a backlight module of the present invention.
  • the backlight module includes a plastic front frame 21, a plastic frame 22, a chip assembly 23, a back plate 24, a light source 25, an electromagnetic shielding member 36, an optical assembly 27, and a liquid crystal panel 28.
  • the electromagnetic shielding member 36 is integrally formed inside the plastic front frame 21.
  • a first material containing a plastic material and conductive particles and a second material containing only a plastic material are simultaneously injected into the plastic front frame 21 by two-shot injection molding to simultaneously form the electromagnetic shielding.
  • the position of the injection molding corresponds to the chip component 23, so that the electromagnetic shielding component 36 formed can effectively shield the external electromagnetic and prevent external electromagnetic interference to the chip component 23.
  • a plurality of liquid crystal cells of the liquid crystal panel 28 are controlled by the chip component 23 to control the respective liquid crystal molecules to continuously switch the twist angle of the liquid crystal molecules, and the light source 25 emits a backlight.
  • the light emitted from the light source 25 is uniformly scattered by the optical component 27 and enters the liquid crystal panel 28, and determines which color light is finally output according to the distortion angle of the liquid crystal molecules in the liquid crystal cell, thereby realizing the backlight module.
  • the electromagnetic shielding member 36 is formed inside the plastic front frame 21, and the electromagnetic shielding member 36 is formed of a material containing a conductive substance, And corresponding to the chip component 23, the electromagnetic shielding component 36 can effectively shield the outside electromagnetic layer to isolate and prevent external electromagnetic interference to the chip component 23, and ensure the normal control signal of the chip component 23, In turn, the picture display quality of the liquid crystal display is ensured.
  • the present invention provides an electromagnetic shielding component around the chip component.
  • the electromagnetic shielding component can prevent external electromagnetic interference to the chip component, and the control signal of the chip component is ensured. Stability, which in turn ensures the quality of the picture display.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种背光模组及液晶显示器，背光模组包括塑胶前框（21）、胶框（22）、芯片组件（23）、电磁屏蔽部件（26），电磁屏蔽部件（26）设置于芯片组件（23）周围，用于隔绝外界电磁对芯片组件（23）的干扰。在背光模组的前框（21）采用塑胶材质时，可以通过电磁屏蔽部件（26）防止外界电磁对芯片组件（23）的干扰，保证了画面显示质量。

Description

背光模组及液晶显示器 技术领域
本发明涉及液晶显示技术领域，特别是涉及一种背光模组及液晶显示器。
 背景技术
随着液晶技术的不断发展，对液晶显示器内各部件的要求越来越高。
以背光模组为例，请参阅图1，图1为现有技术中背光模组的结构示意图。
所述背光模组包括前框11、液晶面板12、背板13、芯片组件14（譬如芯片或者薄膜覆晶）、光源15、光学组件16（譬如导光板、光学膜片）以及胶框17等。
所述背板13支撑所述光学组件16及所述胶框17，所述胶框17支撑放置所述液晶面板12，并支撑所述前框11。所述光源15设置于所述背板13侧壁的内侧，所述芯片组件14输入控制信号控制所述液晶面板12的许多液晶单元各自快速的不断切换液晶分子的扭曲角度。同时，所述光源15出射的光线经所述光学组件16散射后进入所述液晶面板12，实现所述背光模组的背光供应及所述液晶面板12的颜色变换。
其中，前框11可以由金属材质或塑胶材质形成。现有技术中，为了节省成本，所述前框11多采用塑料材质，但是使用塑胶材质后，一旦外界存在电磁干扰，由于塑料材质的前框11不能对外界电磁干扰(electromagnetic interference，EMI)进行屏蔽(shielding)，使得所述芯片组件14很容易受到外界电磁的干扰，导致控制信号异常，进而影响液晶显示器的画面显示质量。
因此，有必要解决上述技术问题。
 技术问题
本发明的一个目的在于提供一种背光模组，以解决现有技术中由于塑料材质的前框不能对芯片组件形成有效的保护，使得芯片组件极易受到外界电磁干扰，导致控制信号异常的技术问题的技术问题。
本发明的还一个目的在于提供一种液晶显示器，以解决现有技术中由于塑料材质的前框不能对芯片组件形成有效的保护，使得芯片组件极易受到外界电磁干扰，导致控制信号异常的技术问题的技术问题。
 技术解决方案
本发明构造了一种背光模组，包括塑胶前框、胶框、背板以及芯片组件，所述芯片组件设置于所述塑胶前框和所述胶框之间，其中：
所述背光模组还包括一电磁屏蔽部件，所述电磁屏蔽部件设置于所述塑胶前框和所述芯片组件之间，所述电磁屏蔽部件电气连接于所述背板，以形成对所述芯片组件的电磁屏蔽环绕；
所述电磁屏蔽部件用于隔绝外界电磁对所述芯片组件的干扰。
在本发明的背光模组中，所述电磁屏蔽部件设置于所述塑胶前框上。
在本发明的背光模组中，所述电磁屏蔽部件是贴合或者镶嵌固定于所述塑胶前框的内表面上。
在本发明的背光模组中，所述电磁屏蔽部件为金属罩或金属网罩。
在本发明的背光模组中，所述电磁屏蔽部件一体成型于所述塑胶前框的内部。
本发明的另一个目的在于提供一种背光模组，以解决现有技术中由于塑料材质的前框不能对芯片组件形成有效的保护，使得芯片组件极易受到外界电磁干扰，导致控制信号异常的技术问题的技术问题。
为解决上述问题，本发明构造了一种背光模组，包括塑胶前框、胶框以及芯片组件，所述芯片组件设置于所述塑胶前框和所述胶框之间；
所述背光模组还包括一电磁屏蔽部件，所述电磁屏蔽部件设置于所述芯片组件周围，用于隔绝外界电磁对所述芯片组件的干扰。
在本发明的背光模组中，所述电磁屏蔽部件设置于所述塑胶前框和所述芯片组件之间，且设置于所述塑胶前框上。
在本发明的背光模组中，所述电磁屏蔽部件通过贴合或者镶嵌的方式固定于所述塑胶前框上。
在本发明的背光模组中，所述电磁屏蔽部件为金属罩或金属网罩。
在本发明的背光模组中，所述电磁屏蔽部件一体成型于所述塑胶前框的内部。
在本发明的背光模组中，所述背光模组还包括背板，所述电磁屏蔽部件电气连接于所述背板，以形成对所述芯片组件的电磁屏蔽环绕。
本发明的还一个目的在于提供一种液晶显示器，以解决现有技术中由于塑料材质的前框不能对芯片组件形成有效的保护，使得芯片组件极易受到外界电磁干扰，导致控制信号异常的技术问题的技术问题。
为解决上述问题，本发明构造了一种液晶显示器，所述液晶面板包括一背光模组，所述背光模组包括塑胶前框、胶框以及芯片组件，所述芯片组件设置于所述塑胶前框和所述胶框之间，所述背光模组还包括一电磁屏蔽部件，所述电磁屏蔽部件靠近所述芯片组件，用于隔绝外界电磁对所述芯片组件的干扰。
在本发明的液晶显示器中，所述电磁屏蔽部件设置于所述塑胶前框和所述芯片组件之间，且设置于所述塑胶前框上。
在本发明的液晶显示器中，所述电磁屏蔽部件通过贴合或者镶嵌的方式固定于所述塑胶前框上。
在本发明的液晶显示器中，所述电磁屏蔽部件为金属罩或金属网罩。
在本发明的液晶显示器中，所述电磁屏蔽部件一体成型于所述塑胶前框的内部。
 有益效果
本发明相对于现有技术，通过在芯片组件周围设置电磁屏蔽部件，在所述前框采用塑胶材质时，可以通过电磁屏蔽部件防止外界电磁对所述芯片组件的干扰，保证了芯片组件的控制信号的稳定性，进而保证了画面显示质量。
 附图说明
图1为现有技术中背光模组的结构示意图；
图2为本发明中背光模组的第一较佳实施例结构示意图；
图3为本发明中背光模组的第二较佳实施例结构示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。
请参阅图2，图2为本发明中背光模组的第一较佳实施例的结构示意图。
所述背光模组包括塑胶前框21、胶框22、芯片组件23、背板24、光源25、电磁屏蔽部件26、光学组件27以及液晶面板28，所述背板24包括一垂直设置的侧壁241。
其中，所述胶框22设置于所述侧壁241的外侧，并由所述侧壁241支撑，所述胶框22上支撑放置所述液晶面板28。
所述光源25设置于所述侧壁241的内侧，对应所述光学组件27，所述光源25可以是一侧入式光源，例如为具有多个发光二极管(LED)的电路板灯条(light bar)。所述芯片组件23设置于所述胶框22的外侧，并透过所述胶框22和所述侧壁241连接至所述光源25。所述胶框22还支撑所述塑胶前框21，所述芯片组件23设置于所述塑胶前框21和所述胶框22之间。
其中，所述电磁屏蔽部件26靠近所述芯片组件23，并设置于所述塑胶前框21和所述芯片组件23之间，用于隔绝及防止外界电磁讯号对所述芯片组件23的干扰。
在图2所示的第一较佳实施例中，所述电磁屏蔽部件26设置于所述塑胶前框21的内侧。所述电磁屏蔽部件26优选贴合或者镶嵌固定于所述塑胶前框21的内侧，当然也可以是其它的方式设置在所述塑胶前框21上，譬如采用嵌件成型（Insert Molding）方式与所述塑胶前框21一体注塑成型，此处不一一列举。
其中，所述电磁屏蔽部件26还可电气连接于所述背板24(未绘示)，以形成对所述芯片组件23的电磁屏蔽环绕，提供更好的屏蔽外界电磁效果。
在具体实施过程中，所述电磁屏蔽部件26还可延伸固定到所述胶框22的侧壁241的外侧面上(未绘示)，以使得所述电磁屏蔽部件26环绕所述芯片组件23以屏蔽外界电磁或内部电磁干扰，此处不一一列举。
在图2所示的第一较佳实施例中，所述电磁屏蔽部件26为金属网罩。当然所述电磁屏蔽部件26还可以为金属罩，也可以是其它材质或者其它结构，只要能够屏蔽外界电磁即可，此处不一一列举。上述金属材质例如为铜、铁、镍、金、银或其它金属及其合金。
其中，所述芯片组件23优选为芯粒软膜封装（Chip On Film，COF）构造，即将背光模组的源驱动芯片固定于挠性印刷电路板（Flexible Circuit Board ，FCB）上，所述芯片组件23的一端电气连接所述液晶面板28，及其另一端连接液晶显示器的一驱动电路板（Printed Circuit Board ，PCB）。
图2所示的背光模组的第一较佳实施例的工作原理为：
在液晶显示器工作过程中，通过所述芯片组件23输入控制信号控制所述液晶面板28的许多液晶单元各自快速的不断切换液晶分子的扭曲角度，同时光源25发出背光。所述光源25出射的光线通过所述光学组件27的均匀散射后进入液晶面板28，并因应液晶单元中的液晶分子的扭曲角度变化，而决定最终输出何种色光，从而实现所述背光模组的背光供应及所述液晶面板28的颜色变换。
当有外界电磁干扰时，譬如液晶显示器周围有手机用户在通话等，由于所述电磁屏蔽部件26靠近所述芯片组件23，并设置于所述塑胶前框21和所述芯片组件23之间，且所述电磁屏蔽部件26为金属网罩，因此所述电磁屏蔽部件26可以有效的将外界电磁信号屏蔽，以隔绝及防止外界电磁对所述芯片组件23的干扰，保证所述芯片组件23的控制信号的正常，进而保证液晶显示器的画面显示质量。
图3为本发明中背光模组的第二较佳实施例的结构示意图。
所述背光模组包括塑胶前框21、胶框22、芯片组件23、背板24、光源25、电磁屏蔽部件36、光学组件27以及液晶面板28。
与图2所示的第一较佳实施例不同之处在于，在图3所示的第二较佳实施例中，所述电磁屏蔽部件36一体成型于所述塑胶前框21的内部。
在具体实施过程中，在所述塑胶前框21内通过双射注塑方式同时注塑含塑料材料及导电颗粒的第一材料与仅含塑料材料的第二材料，以分别同时射出形成所述电磁屏蔽部件36与所述塑胶前框21的本体。其中，注塑的位置对应所述芯片组件23，以使得形成的所述电磁屏蔽部件36能有效的屏蔽外界电磁，防止外界电磁对所述芯片组件23的干扰。
图3所示的背光模组的第二较佳实施例的工作原理为：
在液晶显示器工作过程中，通过所述芯片组件23输入控制信号控制所述液晶面板28的许多液晶单元各自快速的不断切换液晶分子的扭曲角度，同时光源25发出背光。所述光源25出射的光线通过所述光学组件27的均匀散射后进入液晶面板28，并因应液晶单元中的液晶分子的扭曲角度变化，而决定最终输出何种色光，从而实现所述背光模组的背光供应及所述液晶面板28的颜色变换。
当有外界电磁干扰时，譬如液晶显示器周围有手机用户在通话等，由于所述电磁屏蔽部件36形成于所述塑胶前框21内部，且所述电磁屏蔽部件36由含导电物质的材料形成，并对应所述芯片组件23，因此所述电磁屏蔽部件36可以有效的将外界电磁屏蔽，以隔绝及防止外界电磁对所述芯片组件23的干扰，保证所述芯片组件23的控制信号的正常，进而保证液晶显示器的画面显示质量。
本发明相对于现有技术，通过在芯片组件周围设置电磁屏蔽部件，在前框采用塑胶材质时，可以通过电磁屏蔽部件防止外界电磁对所述芯片组件的干扰，保证了芯片组件的控制信号的稳定性，进而保证了画面显示质量。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
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Claims (15)

  1. 一种背光模组，包括塑胶前框、胶框、背板以及芯片组件，所述芯片组件设置于所述塑胶前框和所述胶框之间，其中：
    所述背光模组还包括一电磁屏蔽部件，所述电磁屏蔽部件设置于所述塑胶前框和所述芯片组件之间，所述电磁屏蔽部件电气连接于所述背板，以形成对所述芯片组件的电磁屏蔽环绕；
    所述电磁屏蔽部件用于隔绝外界电磁对所述芯片组件的干扰。
  2. 根据权利要求1所述的背光模组，其中，所述电磁屏蔽部件设置于所述塑胶前框上。
  3. 根据权利要求2所述的背光模组，其中，所述电磁屏蔽部件是贴合或者镶嵌固定于所述塑胶前框的内表面上。
  4. 根据权利要求3所述的背光模组，其中，所述电磁屏蔽部件为金属罩或金属网罩。
  5. 根据权利要求1所述的背光模组，其中，所述电磁屏蔽部件一体成型于所述塑胶前框的内部。
  6. 一种背光模组，包括塑胶前框、胶框以及芯片组件，所述芯片组件设置于所述塑胶前框和所述胶框之间，其中：
    所述背光模组还包括一电磁屏蔽部件，所述电磁屏蔽部件设置于所述芯片组件周围，用于隔绝外界电磁对所述芯片组件的干扰。
  7. 根据权利要求6所述的背光模组，其中，所述电磁屏蔽部件设置于所述塑胶前框和所述芯片组件之间，且设置于所述塑胶前框上。
  8. 根据权利要求7所述的背光模组，其中，所述电磁屏蔽部件是贴合或者镶嵌固定于所述塑胶前框的内表面上。
  9. 根据权利要求8所述的背光模组，其中，所述电磁屏蔽部件为金属罩或金属网罩。
  10. 根据权利要求6所述的背光模组，其中，所述电磁屏蔽部件一体成型于所述塑胶前框的内部。
  11. 根据权利要求6所述的背光模组，所述背光模组还包括背板，其中，所述电磁屏蔽部件电气连接于所述背板，以形成对所述芯片组件的电磁屏蔽环绕。
  12. 一种液晶显示器，其中，所述液晶面板包括一背光模组，所述背光模组包括塑胶前框、胶框以及芯片组件，所述芯片组件设置于所述塑胶前框和所述胶框之间，所述背光模组还包括一电磁屏蔽部件，所述电磁屏蔽部件靠近所述芯片组件，用于隔绝外界电磁对所述芯片组件的干扰。
  13. 根据权利要求12所述的液晶显示器，其中，所述电磁屏蔽部件设置于所述塑胶前框和所述芯片组件之间，且设置于所述塑胶前框上。
  14. 根据权利要求12所述的液晶显示器，其中，所述电磁屏蔽部件是贴合或者镶嵌固定于所述塑胶前框上。
  15. 根据权利要求12所述的液晶显示器，其中，所述电磁屏蔽部件一体成型于所述塑胶前框的内部。
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