WO2013134969A1 - 背光模组及液晶显示器 - Google Patents
背光模组及液晶显示器 Download PDFInfo
- 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
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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
- 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
Description
Claims (15)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US13/502,743 US20150002785A1 (en) | 2012-03-13 | 2012-03-26 | Backlight module and liquid crystal display |
DE112012006026.1T DE112012006026B4 (de) | 2012-03-13 | 2012-03-26 | Hintergrundbeleuchtungsmodul und Flüssigkristallanzeige |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201210065197.8A CN102620195B (zh) | 2012-03-13 | 2012-03-13 | 背光模组及液晶显示器 |
CN201210065197.8 | 2012-03-13 |
Publications (1)
Publication Number | Publication Date |
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WO2013134969A1 true WO2013134969A1 (zh) | 2013-09-19 |
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PCT/CN2012/073057 WO2013134969A1 (zh) | 2012-03-13 | 2012-03-26 | 背光模组及液晶显示器 |
Country Status (4)
Country | Link |
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US (1) | US20150002785A1 (zh) |
CN (1) | CN102620195B (zh) |
DE (1) | DE112012006026B4 (zh) |
WO (1) | WO2013134969A1 (zh) |
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KR20140091834A (ko) * | 2013-01-14 | 2014-07-23 | 삼성디스플레이 주식회사 | 백라이트 모듈 및 이를 포함하는 표시 장치 |
CN103235425B (zh) * | 2013-03-27 | 2015-09-09 | 京东方科技集团股份有限公司 | 一种液晶显示装置 |
CN203444199U (zh) * | 2013-09-10 | 2014-02-19 | 中兴通讯股份有限公司 | 一种液晶显示器显示模块及移动终端 |
KR101538365B1 (ko) * | 2014-02-24 | 2015-07-21 | 삼성전자 주식회사 | 디스플레이 기기 |
CN104460111B (zh) * | 2014-12-08 | 2017-11-10 | 厦门天马微电子有限公司 | 一种背光模组及液晶显示装置 |
CN104614884A (zh) * | 2015-02-28 | 2015-05-13 | 京东方科技集团股份有限公司 | 一种液晶模组及显示装置 |
CN105158988B (zh) * | 2015-09-30 | 2019-05-07 | 京东方科技集团股份有限公司 | 一种胶框、背光模组和显示装置 |
CN106373500B (zh) * | 2016-11-04 | 2023-05-30 | 上海控易电子科技有限公司 | 一种液晶显示屏 |
CN108535903B (zh) * | 2018-04-25 | 2022-03-04 | 京东方科技集团股份有限公司 | 一种显示模组及显示装置 |
TWI689764B (zh) * | 2018-07-19 | 2020-04-01 | 友達光電股份有限公司 | 顯示裝置 |
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KR20220078197A (ko) * | 2020-12-03 | 2022-06-10 | 삼성전자주식회사 | 정전기를 그라운드에 연결시키는 방전 구조를 포함하는 전자 장치 |
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- 2012-03-13 CN CN201210065197.8A patent/CN102620195B/zh not_active Expired - Fee Related
- 2012-03-26 US US13/502,743 patent/US20150002785A1/en not_active Abandoned
- 2012-03-26 WO PCT/CN2012/073057 patent/WO2013134969A1/zh active Application Filing
- 2012-03-26 DE DE112012006026.1T patent/DE112012006026B4/de not_active Expired - Fee Related
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CN1737656A (zh) * | 2004-08-19 | 2006-02-22 | 三星电子株式会社 | 包括导电可压缩体的平板显示设备 |
CN101118327A (zh) * | 2006-07-31 | 2008-02-06 | 三星电子株式会社 | 多层柔性膜封装和包括其的液晶显示装置 |
CN101276077A (zh) * | 2007-03-29 | 2008-10-01 | Nec液晶技术株式会社 | 液晶模块和包含该液晶模块的液晶显示装置 |
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Also Published As
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US20150002785A1 (en) | 2015-01-01 |
CN102620195A (zh) | 2012-08-01 |
DE112012006026B4 (de) | 2020-09-24 |
CN102620195B (zh) | 2014-07-16 |
DE112012006026T5 (de) | 2015-02-26 |
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