EP0446038A2 - Ecran contre les interférences Moiré - Google Patents

Ecran contre les interférences Moiré Download PDF

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Publication number
EP0446038A2
EP0446038A2 EP91301879A EP91301879A EP0446038A2 EP 0446038 A2 EP0446038 A2 EP 0446038A2 EP 91301879 A EP91301879 A EP 91301879A EP 91301879 A EP91301879 A EP 91301879A EP 0446038 A2 EP0446038 A2 EP 0446038A2
Authority
EP
European Patent Office
Prior art keywords
pattern
elements
substrate
conductive
emi
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.)
Withdrawn
Application number
EP91301879A
Other languages
German (de)
English (en)
Other versions
EP0446038A3 (en
Inventor
Ellice Yeng Luh
Roger Crowell
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.)
Chomerics Inc
Original Assignee
Chomerics Inc
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 Chomerics Inc filed Critical Chomerics Inc
Publication of EP0446038A2 publication Critical patent/EP0446038A2/fr
Publication of EP0446038A3 publication Critical patent/EP0446038A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/867—Means associated with the outside of the vessel for shielding, e.g. magnetic shields

Definitions

  • Figure 1 shows a planar view of a normal, grid-like pattern.
  • the elements 32 are shown as being in contact with each of their adjoining horizontal and vertical vertices so that electrical continuity is maintained throughout the pattern 31. While each element 32 is in contact with its neighboring elements, the elements are preferably arranged so that they do not present a linear component that is greater in length than the length of one element.
  • the bus bar 33 may be a conductive layer formed on or in the surface of the substrate.
  • the bus bar 33 can be formed in a manner identical to the formation of the pattern except preferably it is void free. However, if desired, one could use elements 32 that are smaller in diameter and/or thicker in annular width along the edges of the pattern 31 to form the bus bar 33.
  • the bus bar is connected to a conductive lead such as a grounding strap, a metal frame, or a conductive gasket that establishes contact with the surface to which the substrate is mounted.
  • a conductive lead such as a grounding strap, a metal frame, or a conductive gasket that establishes contact with the surface to which the substrate is mounted.
  • a desired pattern is first created.
  • the pattern can be drawn by hand or preferably by a computer generated program.
  • a preferred simple means for creating the randomly oriented pattern of the present invention is to use a computerized print program which will lay out a series of elements of the desired length and width in an arrangement so that the vertices of the elements are randomly oriented from their normal x and y coordinate by a small increment and angle, ⁇ .
  • a photomask is made of the pattern and imaged onto a resist coated substrate. The resist coated substrate is exposed to actinic radiation and developed. The developed image is then plated to form a conductive pattern.
  • the present invention may be used in a computer terminal as an EMI/RFI shield. It also has applications in the area of EMI/RFI shielded windows, such as in high security buildings and vehicles. It may also be used in applications that require a conductive or heated window such as a rear window defogger in an automobile. It is believed that in this application the conductive pattern is less distractive to the operator than the grid like formation that is currently in use.
  • the conductive pattern when the conductive pattern is formed as a freestanding material, it can be a replacement for knitted or braided conductive mesh used in forming conductive gaskets.

Landscapes

  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Transforming Electric Information Into Light Information (AREA)
EP19910301879 1990-03-06 1991-03-06 Non-moire shielded window Withdrawn EP0446038A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US488911 1983-04-27
US48891190A 1990-03-06 1990-03-06

Publications (2)

Publication Number Publication Date
EP0446038A2 true EP0446038A2 (fr) 1991-09-11
EP0446038A3 EP0446038A3 (en) 1992-01-08

Family

ID=23941630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910301879 Withdrawn EP0446038A3 (en) 1990-03-06 1991-03-06 Non-moire shielded window

Country Status (3)

Country Link
EP (1) EP0446038A3 (fr)
JP (1) JPH04217397A (fr)
CA (1) CA2036868A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835045A2 (fr) * 1996-10-04 1998-04-08 Molex Incorporated Circuit imprimé flexible mis en terre possédant des caractéristiques d'impédance améliorées
EP0883156A2 (fr) * 1997-06-03 1998-12-09 Hitachi Chemical Co., Ltd. Pellicule adhésive à blindage électromagnétique
EP0917174A2 (fr) * 1997-11-11 1999-05-19 Hitachi Chemical Co., Ltd. Pellicule adhésive à blindage électromagnétique ,ensemble de blindage et dispositif d'affichage utilisant une telle pellicule
GB2340651A (en) * 1998-08-10 2000-02-23 Sumitomo Bakelite Co Electromagnetic wave shield
EP2631709A2 (fr) * 2010-10-22 2013-08-28 LG Chem, Ltd. Dispositif d'affichage comprenant un motif conducteur
EP2743764A1 (fr) * 2012-12-17 2014-06-18 LG Innotek Co., Ltd. Procédé de conception d'un motif aléatoire, appareil de conception dudit motif et substrat optique comprenant un motif aléatoire selon le même procédé
CN109360251A (zh) * 2018-09-06 2019-02-19 秦皇岛波盾电子有限公司 一种无角度透明屏蔽随机网格图案生成方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5029609B2 (ja) * 2007-05-09 2012-09-19 東レ株式会社 導電性基板、プラズマディスプレイ用電磁波シールド基板および導電性基板の製造方法
JP6503728B2 (ja) * 2013-12-26 2019-04-24 大日本印刷株式会社 表示装置
JP6477079B2 (ja) * 2015-03-18 2019-03-06 大日本印刷株式会社 タッチパネルセンサ、タッチパネル装置および表示装置
JP2016212517A (ja) * 2015-04-30 2016-12-15 凸版印刷株式会社 導電性フィルム、タッチパネル、および、表示装置
KR102541112B1 (ko) 2016-04-05 2023-06-09 미래나노텍(주) 터치 센서 및 이를 이용한 터치스크린 패널

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1272812A (fr) * 1960-11-02 1961-09-29 Procédé pour l'amélioration d'images telles que les images obtenues sur un écran de télévision et trames conformes à celles utilisées dans le procédé précédent ou procédé similaire
JPS61253751A (ja) * 1985-05-02 1986-11-11 Mitsubishi Plastics Ind Ltd 電磁波遮蔽フイルタ
US4755716A (en) * 1986-07-21 1988-07-05 Mitsui Toatsu Chemicals, Inc. Filter for CRT screen
EP0297231A2 (fr) * 1987-04-28 1989-01-04 Ppg Industries, Inc. Electroformage des écrans contre les pulsations électromagnétiques

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1272812A (fr) * 1960-11-02 1961-09-29 Procédé pour l'amélioration d'images telles que les images obtenues sur un écran de télévision et trames conformes à celles utilisées dans le procédé précédent ou procédé similaire
JPS61253751A (ja) * 1985-05-02 1986-11-11 Mitsubishi Plastics Ind Ltd 電磁波遮蔽フイルタ
US4755716A (en) * 1986-07-21 1988-07-05 Mitsui Toatsu Chemicals, Inc. Filter for CRT screen
EP0297231A2 (fr) * 1987-04-28 1989-01-04 Ppg Industries, Inc. Electroformage des écrans contre les pulsations électromagnétiques

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN. vol. 32, no. 5B, October 1989, NEW YORK US pages 481 - 482; 'EMI suppression display screen' *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 104 (E-494)(2551) 2 April 1987 & JP-A-61 253 751 ( MITSUBISHI PLASTICS IND LTD ) 11 November 1986 *
SID DIGEST OF TECHNICAL PAPERS vol. 19, May 1988, CALIFORNIA, USA pages 185 - 188; R HASAN: 'A study of materials and methods for EMI shielding of displays' *

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835045A2 (fr) * 1996-10-04 1998-04-08 Molex Incorporated Circuit imprimé flexible mis en terre possédant des caractéristiques d'impédance améliorées
EP0835045A3 (fr) * 1996-10-04 1999-03-10 Molex Incorporated Circuit imprimé flexible mis en terre possédant des caractéristiques d'impédance améliorées
US6559377B1 (en) 1996-10-04 2003-05-06 Molex Incorporated Grounded flexible printed circuitry with improved impedance characteristics
KR100282628B1 (ko) * 1996-10-04 2001-02-15 루이스 에이. 헥트 임피던스특성이향상된접지식가요성인쇄회로
EP0883156A2 (fr) * 1997-06-03 1998-12-09 Hitachi Chemical Co., Ltd. Pellicule adhésive à blindage électromagnétique
EP0883156A3 (fr) * 1997-06-03 1999-05-26 Hitachi Chemical Co., Ltd. Pellicule adhésive à blindage électromagnétique
EP0917174A2 (fr) * 1997-11-11 1999-05-19 Hitachi Chemical Co., Ltd. Pellicule adhésive à blindage électromagnétique ,ensemble de blindage et dispositif d'affichage utilisant une telle pellicule
EP0917174A3 (fr) * 1997-11-11 1999-05-26 Hitachi Chemical Co., Ltd. Pellicule adhésive à blindage électromagnétique ,ensemble de blindage et dispositif d'affichage utilisant une telle pellicule
US6197408B1 (en) 1997-11-11 2001-03-06 Hitachi Chemical Company, Ltd. Electromagnetically shielding bonding film, and shielding assembly and display device using such film
SG81995A1 (en) * 1998-08-10 2001-07-24 Sumitomo Bakelite Co Transparent electromagnetic wave shield
US6210787B1 (en) 1998-08-10 2001-04-03 Sumitomo Bakelite Company Limited Transparent electromagnetic wave shield
GB2340651B (en) * 1998-08-10 2002-11-06 Sumitomo Bakelite Co Transparent electromagnetic wave shield
GB2340651A (en) * 1998-08-10 2000-02-23 Sumitomo Bakelite Co Electromagnetic wave shield
EP2631709A2 (fr) * 2010-10-22 2013-08-28 LG Chem, Ltd. Dispositif d'affichage comprenant un motif conducteur
EP2631709A4 (fr) * 2010-10-22 2014-05-21 Lg Chemical Ltd Dispositif d'affichage comprenant un motif conducteur
US9519091B2 (en) 2010-10-22 2016-12-13 Lg Chem, Ltd. Display device including a conductive pattern
EP2743764A1 (fr) * 2012-12-17 2014-06-18 LG Innotek Co., Ltd. Procédé de conception d'un motif aléatoire, appareil de conception dudit motif et substrat optique comprenant un motif aléatoire selon le même procédé
US9652563B2 (en) 2012-12-17 2017-05-16 Lg Innotek Co., Ltd. Method of designing random pattern, apparatus for designing random pattern, and optical substrate including random pattern according to the same method
TWI623776B (zh) * 2012-12-17 2018-05-11 Ｌｇ伊諾特股份有限公司 設計光學基板的方法
CN109360251A (zh) * 2018-09-06 2019-02-19 秦皇岛波盾电子有限公司 一种无角度透明屏蔽随机网格图案生成方法

Also Published As

Publication number Publication date
EP0446038A3 (en) 1992-01-08
JPH04217397A (ja) 1992-08-07
CA2036868A1 (fr) 1991-09-07

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