[go: up one dir, main page]

US20060087600A1 - Flat panel display and backlight module thereof - Google Patents

Flat panel display and backlight module thereof Download PDF

Info

Publication number
US20060087600A1
US20060087600A1 US11/104,339 US10433905A US2006087600A1 US 20060087600 A1 US20060087600 A1 US 20060087600A1 US 10433905 A US10433905 A US 10433905A US 2006087600 A1 US2006087600 A1 US 2006087600A1
Authority
US
United States
Prior art keywords
circuit board
electrical connection
connection port
backlight module
flat panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/104,339
Other languages
English (en)
Inventor
Jun-Hsian Lao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AUO Corp
Original Assignee
AU Optronics Corp
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 AU Optronics Corp filed Critical AU Optronics Corp
Assigned to AU OPTRONICS CORP. reassignment AU OPTRONICS CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LAO, JUN-HSIAN
Publication of US20060087600A1 publication Critical patent/US20060087600A1/en
Priority to US12/389,573 priority Critical patent/US7973874B2/en
Abandoned legal-status Critical Current

Links

Images

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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • 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
    • G02F1/133325—Assembling processes
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit

Definitions

  • the invention relates to a flat panel display, and in particular to a flat panel display and a backlight module thereof.
  • Flexible printed circuit board is widely used in electronic devices for electrical connection requiring elasticity and light weight, enabling internal space of electronics to be effectively utilized and convenient to assemble.
  • FIG. 1 is a schematic view of a conventional backlight 10 for a flat panel display.
  • the conventional backlight 10 comprises a frame 11 , a flexible printed circuit board 12 , a light source (not shown), and other elements.
  • the flexible printed circuit board 12 is generally long and thin, and disposed on a front side F′ of the backlight module 10 .
  • a portion of the flexible printed circuit board 12 protrudes from the frame 11 , connecting to other circuit boards in the flat panel display, providing signal transfer and power to a light source.
  • signals transmitted by or received from the backlight module 10 are transmitted via the flexible printed circuit board 12 to other interfaces of the flat panel display.
  • Two conventional connection methods frequently used to connect the flexible printed circuit board and other circuit boards of the flat panel display are shown in FIGS. 2A and 2B , respectively.
  • FIG. 2A is a side view of an assembly of a printed circuit board 15 and a backlight module 10 of a conventional flat panel display 100 .
  • FIG. 2B is a side view of another assembly of a printed circuit board 15 and a backlight module 10 of the conventional flat panel display 100 .
  • the flat panel display 100 comprises a printed circuit board 15 and a backlight module 10 disposed thereon.
  • a flexible printed circuit board 12 for light source protrudes from the frame of the backlight module 10 and connects to the printed circuit board 15 via a connector 16 .
  • connector 16 having large volume, requires additional space, and thus, the connector 16 occupies most usable space on the circuit board 15 or the flexible circuit board 12 .
  • the connector must be assembled manually, whereby labor time and costs cannot be effectively controlled.
  • FIG. 2B is a schematic view of a flexible printed circuit board 12 for light source, welded to bare copper (not shown) of another printed circuit board 15 of a flat panel display by solder 17 .
  • solder 17 since connectors are eliminated, material costs are reduced, but assembly time and costs cannot. Welding quality depends on skill and performance and can vary with the parameters of pressure welding, machines, and thickness of solder. Thus, connection quality is difficult to control. If the product must be repaired or reassembled, the flexible printed circuit board can possibly overheat, deform, or even break such that the product is irreparable. If assembly fails, materials are wasted, increasing assembly time, and assembly costs cannot be effectively controlled.
  • Embodiments of the invention provide a flat panel display and a backlight module thereof to eliminate the shortcomings described such that the space in the circuit board is conserved, providing easy reassembly, low costs, and high quality control.
  • a backlight module comprising a frame, a circuit board, and at least one electrical connection port.
  • the circuit board is encircled by the frame.
  • the electrical connection port is disposed on the circuit board, connecting to an external circuit board.
  • the frame comprises at least one opening, corresponding to the electrical connection port, passing through the opening and exposed to the outside of the frame.
  • the electrical connection port comprises elastic conductor, metal elastic plate, or bare copper.
  • the electrical connection port is curved.
  • the circuit board comprises a flexible printed circuit board (FPCB) or printed circuit board (PCB).
  • FPCB flexible printed circuit board
  • PCB printed circuit board
  • a flat panel display comprising a first circuit board, a first electrical connection port, a backlight module, and a panel.
  • the first electrical connection port is disposed on a surface of the first circuit board.
  • the backlight module connected to the first circuit board, comprises a frame, a second circuit board, and a second electrical connection port.
  • the second circuit board is encircled by the frame.
  • the second electrical connection port is disposed on a surface of the second circuit board.
  • the first electrical connection port contacts the second electrical connection port, connecting the second circuit board and the first circuit board.
  • the panel is connected to the second circuit board.
  • FIG. 1 is a schematic view of a conventional backlight module
  • FIG. 2A is a side view of an assembly of a printed circuit board and a backlight module of a conventional flat panel display
  • FIG. 2B is a side view of another assembly of a printed circuit board and a backlight module of the conventional flat panel display;
  • FIG. 3A is a schematic front view of a backlight module of an embodiment of the invention.
  • FIG. 3B is a schematic rear view of a backlight module of FIG. 3A ;
  • FIG. 3C is a local enlarged view of FIG. 3B ;
  • FIG. 4 is a side view of a printed circuit board and a backlight module assembled in a flat panel display of an embodiment of the invention
  • FIG. 5 is a side view of a printed circuit board and a backlight.module assembled in a flat panel display of another embodiment of the invention.
  • FIG. 3A is a schematic view of a front side F of a backlight module 20 of an embodiment of the invention.
  • FIG. 3B is a schematic view of rear side B of the backlight module 20 of FIG. 3A .
  • the embodiment of the invention modifies connection between a flexible printed circuit board and an external circuit board in a flat panel display or a liquid crystal display, and thus, unrelated elements are eliminated from FIGS. 3A and 3B to clearly show the connection between flexible printed circuit board and the external circuit board.
  • the backlight module 20 comprises a frame 21 , a flexible printed circuit board 22 , and at least one electrical connection port 26 .
  • the flexible printed circuit board 22 is connected to a light source (not shown), providing electric power thereto.
  • the flexible printed circuit board 22 is encircled by the frame 21 ; that is, the flexible printed circuit board 22 does not protrude from the frame 21 .
  • the frame 21 requiring no notch for the flexible printed circuit board 22 , provides increased strength.
  • the electrical connection port 26 is disposed on the flexible printed circuit board 22 , connecting the flexible printed circuit board 22 and an external printed circuit board (not shown) or a printed circuit board of a flat panel display. Note that only two electrical connection ports 26 are shown in FIG. 3B , disposed on two ends of the flexible printed circuit board 22 , respectively.
  • the invention does not limit the quantity, position, or size of the flexible printed circuit board 22 .
  • FIG. 3C is a local enlarged view of FIG. 3B .
  • the frame 21 comprises at least one opening 27 formed on the rear side B thereof, corresponding to the electrical connection port 26 passing through the opening 27 and exposed to the outside of the frame 21 .
  • the electrical connection port 26 comprises an elastic conductor such as a metal elastic plate, a curved metal plate.
  • FIG. 4 is a side view of a printed circuit board 25 and a backlight module 20 assembled in a flat panel display 200 of an embodiment of the invention. Note that other elements of the flat panel display 200 such as upper, lower covers, and panel are not shown to clearly show the connection.
  • the panel can be a liquid crystal panel.
  • the flat panel display 200 further comprises a printed circuit board (PCB) 25 and a first electrical connection port 251 , comprising bare copper.
  • PCB printed circuit board
  • the electrical connection port 26 (second electrical connection port) of the backlight module 20 is a metal elastic plate, passing through the opening 27 and exposed to the outside of the frame 21 and protruding to the PCB 25 , the electrical connection port 26 of the backlight module 20 contacts the bare copper 251 of the PCB 25 to electrically connect the flexible printed circuit board 22 and the PCB 25 .
  • FIG. 5 is a side view of a printed circuit board 35 and a backlight module 30 assembled in a flat panel display 300 of another embodiment of the invention, in which elements other than the printed circuit board 35 and the backlight module 30 are omitted.
  • the backlight module 30 comprises a frame, a panel, a flexible printed circuit board, and at least one second electrical connection port 33 , disposed on a surface of the flexible printed circuit board.
  • the flat panel display 300 further comprises a first electrical connection port 36 , disposed on a surface of a printed circuit board (PCB) 35 .
  • the backlight module 30 is connected to the printed circuit board 25 .
  • the first electrical connection port 36 of the PCB 35 comprises an elastic conductor such as a metal elastic plate or a curved elastic plate, protruding to the backlight module 30 .
  • the second electrical connection port 33 comprises bare copper.
  • the first electrical connection port 36 contacts the second electrical connection port 33 , connecting the flexible printed circuit board (not shown) in the backlight module 30 and the printed circuit board 35 of the flat panel display 300 .

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
US11/104,339 2004-10-26 2005-04-12 Flat panel display and backlight module thereof Abandoned US20060087600A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/389,573 US7973874B2 (en) 2004-10-26 2009-02-20 Flat panel display and backlight module thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW93132345 2004-10-26
TW093132345A TWI311660B (en) 2004-10-26 2004-10-26 Liquid crystal display and backlight module thereof

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/389,573 Continuation US7973874B2 (en) 2004-10-26 2009-02-20 Flat panel display and backlight module thereof

Publications (1)

Publication Number Publication Date
US20060087600A1 true US20060087600A1 (en) 2006-04-27

Family

ID=36205836

Family Applications (2)

Application Number Title Priority Date Filing Date
US11/104,339 Abandoned US20060087600A1 (en) 2004-10-26 2005-04-12 Flat panel display and backlight module thereof
US12/389,573 Expired - Lifetime US7973874B2 (en) 2004-10-26 2009-02-20 Flat panel display and backlight module thereof

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/389,573 Expired - Lifetime US7973874B2 (en) 2004-10-26 2009-02-20 Flat panel display and backlight module thereof

Country Status (2)

Country Link
US (2) US20060087600A1 (zh)
TW (1) TWI311660B (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070115419A1 (en) * 2005-11-23 2007-05-24 Song Hyo S Portable display device
US20090128528A1 (en) * 2005-06-27 2009-05-21 Sharp Kabushiki Kaisha Display device and a television receiver having the display device
CN104641281A (zh) * 2012-09-21 2015-05-20 Nlt科技股份有限公司 液晶显示装置
US11670900B2 (en) 2019-02-05 2023-06-06 Emergency Technology, Inc. Universal smart adaptor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI485484B (zh) * 2012-10-16 2015-05-21 Au Optronics Corp 具有可移除定位裝置之框體、包含其之背光模組、顯示模組及其製造方法
TWI498636B (zh) * 2012-11-07 2015-09-01 Au Optronics Corp 顯示裝置
CN111699432B (zh) 2018-02-07 2022-10-04 三星电子株式会社 使用沉浸式系统确定眼睛的屈光力的方法及其电子设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020071085A1 (en) * 2000-12-08 2002-06-13 Industrial Technology Research Institute Method for interconnecting a flat panel display having a non-transparent substrate and devices formed
US6504587B1 (en) * 1998-06-17 2003-01-07 Hitachi, Ltd. Liquid crystal display device in which the inner frame having sidewall
US20030234897A1 (en) * 2002-06-20 2003-12-25 Nec Corporation Display device and portable terminal apparatus
US20040114062A1 (en) * 2001-05-09 2004-06-17 Toshiya Nishio Display module and display unit
US20040169782A1 (en) * 2003-02-27 2004-09-02 Ching-Kun Lai Liquid crystal module

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2868502B1 (ja) * 1998-02-12 1999-03-10 静岡日本電気株式会社 液晶ディスプレー・モジュール
JP4055672B2 (ja) * 2003-07-31 2008-03-05 株式会社デンソー 表示装置
CN100422796C (zh) * 2003-09-10 2008-10-01 株式会社日立显示器 液晶显示装置
JP4543772B2 (ja) * 2003-09-19 2010-09-15 セイコーエプソン株式会社 電気光学装置および電子機器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6504587B1 (en) * 1998-06-17 2003-01-07 Hitachi, Ltd. Liquid crystal display device in which the inner frame having sidewall
US20020071085A1 (en) * 2000-12-08 2002-06-13 Industrial Technology Research Institute Method for interconnecting a flat panel display having a non-transparent substrate and devices formed
US20040114062A1 (en) * 2001-05-09 2004-06-17 Toshiya Nishio Display module and display unit
US20030234897A1 (en) * 2002-06-20 2003-12-25 Nec Corporation Display device and portable terminal apparatus
US20040169782A1 (en) * 2003-02-27 2004-09-02 Ching-Kun Lai Liquid crystal module

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090128528A1 (en) * 2005-06-27 2009-05-21 Sharp Kabushiki Kaisha Display device and a television receiver having the display device
US20070115419A1 (en) * 2005-11-23 2007-05-24 Song Hyo S Portable display device
US7626672B2 (en) * 2005-11-23 2009-12-01 Samsung Mobile Display Co., Ltd. Portable display device
CN104641281A (zh) * 2012-09-21 2015-05-20 Nlt科技股份有限公司 液晶显示装置
US11670900B2 (en) 2019-02-05 2023-06-06 Emergency Technology, Inc. Universal smart adaptor
US12444894B2 (en) 2019-02-05 2025-10-14 Emergency Technology, Inc. Smart adaptor assembly

Also Published As

Publication number Publication date
US20090153769A1 (en) 2009-06-18
TWI311660B (en) 2009-07-01
US7973874B2 (en) 2011-07-05
TW200613809A (en) 2006-05-01

Similar Documents

Publication Publication Date Title
US7973874B2 (en) Flat panel display and backlight module thereof
US6877994B2 (en) Electronic device having a USB connector
US6870590B2 (en) Electrooptical unit with a flexible board and electronic apparatus
US10757239B2 (en) Electronic device including electronic part and earphone jack assembly
KR20020056411A (ko) 터치패널 일체형 엘시디에 있어서의 터치 컨트롤러와엘시디 모듈 컨트롤러와의 결합구조
US6628351B1 (en) Liquid crystal display apparatus
CN211958128U (zh) 电子设备
JP2004221049A (ja) コネクタ
JP4483258B2 (ja) コネクタ一体型プリント基板の接続構造
US5868582A (en) Contact device for electrically connecting a printed circuit board with a liquid crystal display
JP2007243550A (ja) 電子機器
US6303874B1 (en) Electronic parts module and electronic equipment
US6162099A (en) Electrical interconnection mechanism
US20080202802A1 (en) Printed circuit board module having two printed circuit boards for mounting inline package elements and adhibit elements respectively
KR101593585B1 (ko) 엘시디 모듈에 직접 접속되는 커넥터를 구비하는 피시비
CN111107200B (zh) 显示屏组件及移动终端
US20080094849A1 (en) Backlight module and supporting device thereof
US7826024B2 (en) LCD module and liquid crystal imaging means using the same
US20060014419A1 (en) Modules for fixing flexible printed circuit boards and flat display devices utilizing the same
JP2008234997A (ja) 接続構造体，配線板接続体，配線板モジュールおよび電子機器
JPH0981051A (ja) バックライト付きｌｃｄ表示装置及び電子機器
KR100586601B1 (ko) 이동통신 단말기의 영상표시부 연결구조
CN223246813U (zh) 电子设备
JP3653981B2 (ja) 液晶装置の実装構造及び電子機器
JP5547410B2 (ja) 回路装置及び電子機器

Legal Events

Date Code Title Description
AS Assignment

Owner name: AU OPTRONICS CORP., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LAO, JUN-HSIAN;REEL/FRAME:016472/0413

Effective date: 20050329

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION