US20110239510A1 - Display device - Google Patents

Display device Download PDF

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Publication number
US20110239510A1
US20110239510A1 US13/053,347 US201113053347A US2011239510A1 US 20110239510 A1 US20110239510 A1 US 20110239510A1 US 201113053347 A US201113053347 A US 201113053347A US 2011239510 A1 US2011239510 A1 US 2011239510A1
Authority
US
United States
Prior art keywords
front window
plate member
printed portion
display device
printed
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
US13/053,347
Other languages
English (en)
Inventor
Eiji Oohira
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.)
Panasonic Liquid Crystal Display Co Ltd
Japan Display Inc
Original Assignee
Hitachi Displays Ltd
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 Hitachi Displays Ltd filed Critical Hitachi Displays Ltd
Assigned to HITACHI DISPLAYS, LTD. reassignment HITACHI DISPLAYS, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Oohira, Eiji
Publication of US20110239510A1 publication Critical patent/US20110239510A1/en
Assigned to PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD. reassignment PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: IPS ALPHA SUPPORT CO., LTD.
Assigned to IPS ALPHA SUPPORT CO., LTD. reassignment IPS ALPHA SUPPORT CO., LTD. COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS AND APPLICATIONS Assignors: HITACHI DISPLAYS, LTD.
Abandoned legal-status Critical Current

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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
    • G02F1/133308—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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/13332—Front frames
    • 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
    • G02F1/133388—Constructional arrangements; Manufacturing methods with constructional differences between the display region and the peripheral region
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

Definitions

  • the present invention relates to a display device, and in particular to a display device having a front window.
  • liquid crystal modules liquid crystal display devices
  • organic electroluminescent display devices are used for various portable information apparatuses, such as portable phones, portable information terminals (PDA's), digital cameras and multimedia players.
  • FIG. 1 a flexible printed circuit 11 for wiring the system is connected to a capacitor-type touch panel glass (touch panel screen portion) 1 , and furthermore an electronic part 12 for controlling the operation of the touch panel is provided if necessary and an interface terminal portion 13 is formed on the other end of the flexible printed circuit.
  • FIG. 2 shows the exterior of the front window.
  • the front window (FW) has a printed portion 20 on the rear surface except in the image display region of the display panel.
  • the printed portion is colored black or a similar color in liquid crystal display devices in order to prevent light from the backlight from leaking through a place other than the image display region.
  • FIG. 3 is a plan diagram showing the touch panel (TP) in FIG. 1 in a state where it is pasted to a front window (FW).
  • FIG. 4 is a cross sectional diagram along single-dotted chain line X-X′ in FIG. 3.
  • 30 is an adhesive film for pasting the front window and the touch panel together.
  • a touch panel (TP) pasted to the front window (FW) are usually smaller than the front window, and the adhesive film 30 is further smaller and smaller than the touch panel. Therefore, as shown in FIG. 5 , when pressure is applied to the edge of the front window, the front window (FW) bends and makes contact with the edge of the touch panel (TP) at point A, and thus may shave part of the printed portion 20 , which ends up making the printed portion defective.
  • the gap between the two is as narrow as 0.1 mm or less, and therefore it is difficult to provide a buffering material.
  • An object of the present invention is to solve the above described problem and to provide a display device where the printed portion on the front window can be prevented from being shaved, and thus defects can be prevented from being produced.
  • the present inventors have proposed a method for preventing the edge of the touch panel or the like from completely shaving the printed portion through contact by making the printed portion 21 on the front window thicker, as shown in FIG. 6 .
  • the printed portion is thicker than 10 ⁇ m, bubbles (defects in the adhesive film) are easily created in the vicinity of the portions where the printed portion 21 and the adhesive film 30 overlap (B and C), and thus it has been found that a new defect may arise.
  • the present inventors have figured out means and ways to solve the above described problem, and thus invented a display device having the following features.
  • the printed portion on the front window is thicker than the other regions, and therefore the printed portion is not completely shaved as a result of contact of the edge of the plate member, such as the touch panel, and the printed member, and thus defects can be prevented from being produced.
  • the printed portion where the adhesive film is formed is as thin as the conventional printed portion, and therefore no bubbles are created between the front window and the adhesive film or between the plate member and the adhesive film. Furthermore, the distance between the adhesive film and the edge of the plate member is short, and thus it is possible to prevent the plate member from peeling from the front window.
  • FIG. 1 is a plan diagram showing a touch panel
  • FIG. 2 is a plan diagram showing a front window
  • FIG. 3 is a plan diagram showing the front window and the touch panel when they are pasted together
  • FIG. 4 is a cross sectional diagram along the single-dotted chain line X-X′ in FIG. 3 ;
  • FIG. 5 is a diagram illustrating the front window in a bent state
  • FIG. 6 is a diagram illustrating a case where the printed portion is thick
  • FIG. 7 is a diagram illustrating a case where a thin printed portion is provided inside a thick printed portion
  • FIG. 8 is a plan diagram showing the display device according to the present invention.
  • FIG. 9 is a cross sectional diagram along the single-dotted chain line X-X′ in FIG. 8 .
  • FIG. 8 is a plan diagram showing the display device according to the present invention
  • FIG. 9 is a cross sectional diagram along the single-dotted chain line X-X′ in FIG. 8 .
  • the display device having a display panel (not shown) and a front window (FW) provided on the front side of the display panel according to the present invention is characterized by having a plate member (TP) that is pasted to the rear surface of the front window and smaller than the front window, an adhesive film ( 30 ) for pasting the front window and the plate member together that is smaller than the plate member, and a printed portion ( 20 ) printed on the rear surface of the front window and formed around the display region of the display panel, wherein the regions where the front window and the edge of the plate member make contact with each other (regions where 23 is formed), the printed portion is thicker than the other regions.
  • a resin-based material such as an acryl-based material, is appropriate for use as the front window.
  • a reinforced glass to which a scattering preventing film is pasted.
  • An example of the plate member pasted to the front window is a touch panel as that shown in JP2010-237447A.
  • the portion where the touch panel is pasted to the front window (FW) by means of an adhesive film becomes a touch panel screen portion.
  • the display panel instead of the touch panel to the front window.
  • the display panel is a liquid crystal display panel or an organic electroluminescent display panel
  • the polarizing plate provided on this display panel is pasted to the front window by means of an adhesive film.
  • the regions where the printed portion is thick are regions corresponding to the corners of the plate member (touch panel TP) as shown in FIG. 8 . This is because the corners of the front window (FW) are easier to bend than the rest and the corners of the plate member easily shave the printed portions.
  • the regions ( 23 ) where the printed portion is thicker prefferably have a width (d) of 0.5 mm or more with the point (E) at which an edge of the plate member is located at the center.
  • the allowance in the precision for assembly of the plate member, such as a touch panel (TP), and the front window is set to 0.2 mm or less. Therefore, even in the case where the plate member shifts relative to the front window in this range, the edges of the plate member are always located within the thick printed regions in the structure.
  • the thick printed portions prefferably be formed by carrying out printing two or more times in the regions. As a result, it is possible to form the thick printed portions easily.
  • the thickness of the regions other than the thick printed portions is set to 10 ⁇ m or less so that no bubbles are created in the adhesive film.
  • the present invention makes it possible to provide a display device where the printed portions on the front window can be prevented from being shaved and defects can be prevented from being produced.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Human Computer Interaction (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Position Input By Displaying (AREA)
US13/053,347 2010-03-30 2011-03-22 Display device Abandoned US20110239510A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-078937 2010-03-30
JP2010078937A JP2011209604A (ja) 2010-03-30 2010-03-30 表示装置

Publications (1)

Publication Number Publication Date
US20110239510A1 true US20110239510A1 (en) 2011-10-06

Family

ID=44696557

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/053,347 Abandoned US20110239510A1 (en) 2010-03-30 2011-03-22 Display device

Country Status (4)

Country Link
US (1) US20110239510A1 (ko)
JP (1) JP2011209604A (ko)
KR (1) KR101162017B1 (ko)
CN (1) CN102207646A (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150208536A1 (en) * 2014-01-22 2015-07-23 Samsung Display Co., Ltd. Window for display device and display device including the same
CN108762559A (zh) * 2018-05-25 2018-11-06 业成科技（成都）有限公司 触摸屏及其制作方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102081828B1 (ko) 2013-08-07 2020-02-27 삼성디스플레이 주식회사 표시 장치용 보호창 및 이를 사용하는 표시 장치
KR102278982B1 (ko) 2013-10-11 2021-07-19 삼성디스플레이 주식회사 터치 패널 및 이를 포함하는 표시 장치
FR3028460B1 (fr) * 2014-11-19 2018-05-11 Dav Dispositif d'affichage pour vehicule automobile

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5811930A (en) * 1992-12-16 1998-09-22 Durel Corporation Electroluminescent lamp devices and their manufacture
JP2010237447A (ja) * 2009-03-31 2010-10-21 Hitachi Displays Ltd 表示装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009198851A (ja) 2008-02-22 2009-09-03 Epson Imaging Devices Corp 電気光学装置及び電子機器
KR100994608B1 (ko) * 2008-04-18 2010-11-15 (주)멜파스 전극 일체형 윈도우를 포함하는 접촉 감지 패널, 및 그 제조 방법
KR100893498B1 (ko) * 2008-09-26 2009-04-17 주식회사 토비스 터치패널
CN101655628B (zh) * 2009-09-22 2011-09-28 协晶电子科技(上海)有限公司 基于触摸感应膜的橱窗式触摸信息显示屏及其展示系统

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5811930A (en) * 1992-12-16 1998-09-22 Durel Corporation Electroluminescent lamp devices and their manufacture
JP2010237447A (ja) * 2009-03-31 2010-10-21 Hitachi Displays Ltd 表示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150208536A1 (en) * 2014-01-22 2015-07-23 Samsung Display Co., Ltd. Window for display device and display device including the same
CN108762559A (zh) * 2018-05-25 2018-11-06 业成科技（成都）有限公司 触摸屏及其制作方法

Also Published As

Publication number Publication date
JP2011209604A (ja) 2011-10-20
KR20110109963A (ko) 2011-10-06
KR101162017B1 (ko) 2012-07-03
CN102207646A (zh) 2011-10-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HITACHI DISPLAYS, LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OOHIRA, EIJI;REEL/FRAME:025994/0907

Effective date: 20101227

AS Assignment

Owner name: IPS ALPHA SUPPORT CO., LTD., JAPAN

Free format text: COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS AND APPLICATIONS;ASSIGNOR:HITACHI DISPLAYS, LTD.;REEL/FRAME:029362/0104

Effective date: 20100630

Owner name: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., JAPAN

Free format text: MERGER;ASSIGNOR:IPS ALPHA SUPPORT CO., LTD.;REEL/FRAME:029358/0841

Effective date: 20101001

STCB Information on status: application discontinuation

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