EP0367851A1 - Sheet type large display unit - Google Patents

Sheet type large display unit Download PDF

Info

Publication number
EP0367851A1
EP0367851A1 EP88118582A EP88118582A EP0367851A1 EP 0367851 A1 EP0367851 A1 EP 0367851A1 EP 88118582 A EP88118582 A EP 88118582A EP 88118582 A EP88118582 A EP 88118582A EP 0367851 A1 EP0367851 A1 EP 0367851A1
Authority
EP
European Patent Office
Prior art keywords
display unit
display
light emitting
dots
sheet type
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.)
Granted
Application number
EP88118582A
Other languages
German (de)
French (fr)
Other versions
EP0367851B1 (en
Inventor
Issei Tanaka
Akio Uchida
Tadashi Irie
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.)
Stanley Electric Co Ltd
Original Assignee
Stanley Electric Co 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 Stanley Electric Co Ltd filed Critical Stanley Electric Co Ltd
Priority to DE19883886404 priority Critical patent/DE3886404T2/en
Priority to EP19880118582 priority patent/EP0367851B1/en
Publication of EP0367851A1 publication Critical patent/EP0367851A1/en
Application granted granted Critical
Publication of EP0367851B1 publication Critical patent/EP0367851B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs

Definitions

  • the present invention relates to a large display unit which is used outdoors for advertisement, announcement or the like, and more particularly, to a large display unit in which a plurality of large display units are combined to constitute a single large display, the display units disposed in rows and columns each displaying one character.
  • Fig.4 shows a conventional display unit 20 of this type.
  • a display panel 21 of the unit 20 made of hard metal or resin is formed with display windows 21a in the form of, for example, 24 x 24 matrix.
  • a light emitting element holder 22 made of, for example, a printed circuit board is mounted on the back of the display plate 21.
  • Light emitting elements such as light emitting diodes (LED) are mounted on the holder 22 to face the display windows 21a and display illuminated dots.
  • a driver circuit board 23 is mounted on the back of the light emitting element holder 22 to receive a character code from an external circuit and convert it into suitable drive signals which are supplied to the light emitting elements to display a corresponding character.
  • the display unit 20 of this type is mainly intended to be used outdoors, it is housed within a water proof casing 24 provided with a water proof connector 24a. Further, the display windows 21a are also covered with glass to seal it from external environment. Thus, the entire structure of the display unit 20 is made of water proof.
  • the conventional display unit 20 is associated with many problems such as in the following because of the rigid structure thereof:
  • the large display unit comprises a predetermined number of display dots made of light emitting elements disposed in matrix manner relative to a display structure, wherein each of said display dots comprises one or more light emitting elements mounted on a printed circuit board, and said display structure is made of a flexible sheet member which sandwiches said display dots by means of adhesive agent or the like.
  • a sheet type large display unit (hereinunder referred to simply as a display unit) is generally indicated by reference numeral 1.
  • a display surface member 2 of the display unit 1 is adapted to be mounted with display dots 3 disposed in matrix similar to the conventional.
  • display dots 3 For example, 18 x 18, 24 x 24 dot matrix or the like may be selectively used in dependence upon a desired character resolution.
  • a character for example, Chinese character " " as shown in Fig.2 can be displayed.
  • One character is generally displayed on one display unit 1.
  • the display unit 1 is shown in Fig.3, wherein the display surface member 2 generally of square shape is made of a sheet type transparent resin rich in flexibility, the reverse side of which is coated with an adhesive agent.
  • Each of the display dots 3 is constructed of a desired number of light emitting elements 3b such as light emitting diodes (LEDS) mounted on a substrate 3a such as a printed circuit board.
  • LEDS light emitting diodes
  • 576 display dots 3 are used for a 24 x 24 dot display unit, and each display dot 3 is connected by lead wires 4 to a driver circuit (not shown) to drive it in a specific drive method such as dynamic, static or other drive methods.
  • the display dots 3 on the substrate 3a and the lead wires 4 are fixedly attached to a back sheet 5.
  • the back sheet 5 is covered with the display surface member 2 to fixedly attach them together, to thus assemble the display unit 1 of this invention.
  • the substrate 3a for mounting the display dots 3 may use a printed circuit board either of hard or soft material.
  • the attachment among the display surface member 2, display dots 3 and back sheet 5 may be effected using an adhesive agent, or other means such as high frequency welding whereby peripheral portions thereof are welded.
  • colors of the light emitting elements 3b disposed within each display dot 3 may use red, yellow and green. To selectively activate the light emitting element, it becomes possible to realize a display unit 1 of three colors.
  • the display unit 1 is constructed of the display surface member and back sheet which are both made of flexible material, the entire structure of the display unit 1 is flexible.
  • the display surface member 2 and back sheet 5 are made of sheet material so that the display unit 1 becomes thin and light weighted.
  • the display dots 3 are covered by the display surface member 2 and back sheet 5 so that a sufficient water proof performance is realized.
  • a water proof connector and water proof driver circuit may be provided on the display unit 1 as conventional.
  • the display unit of this invention is applicable to various fields in practical use due to its sheet structure, and has the following advantages:

Abstract

A sheet type large display unit (1) has a predetermined number of display dots (3) made of light emitting ele­ments (3b) disposed in matrix manner relative to a dis­play structure (2, 5). Each of the display dots (3) has one or more light emitting elements (3b) mounted on a printed circuit board (3a), and the display structure is made of a flexible sheet member (2, 5) which sand­wiches the display dots (3) by means of adhesive agent or the like.

Description

    Background of the Invention (Field of the Invention)
  • The present invention relates to a large display unit which is used outdoors for advertisement, announcement or the like, and more particularly, to a large display unit in which a plurality of large display units are combined to constitute a single large display, the display units disposed in rows and columns each displaying one character.
    • (Description of Related Art)
  • Fig.4 shows a conventional display unit 20 of this type. A display panel 21 of the unit 20 made of hard metal or resin is formed with display windows 21a in the form of, for example, 24 x 24 matrix. A light emitting element holder 22 made of, for example, a printed circuit board is mounted on the back of the display plate 21. Light emitting elements (not shown) such as light emitting diodes (LED) are mounted on the holder 22 to face the display windows 21a and display illuminated dots. A driver circuit board 23 is mounted on the back of the light emitting element holder 22 to receive a character code from an external circuit and convert it into suitable drive signals which are supplied to the light emitting elements to display a corresponding character. Since the display unit 20 of this type is mainly intended to be used outdoors, it is housed within a water proof casing 24 provided with a water proof connector 24a. Further, the display windows 21a are also covered with glass to seal it from external environment. Thus, the entire structure of the display unit 20 is made of water proof.
  • The conventional display unit 20, however, is associated with many problems such as in the following because of the rigid structure thereof:
    • (1) The weight and volume are large so that transportation and maintenance of the display unit become difficult.
    • (2) A large frame is required to mount the display unit because of its large weight, resulting in semipermanent installation and poor portability which are not suitable for temporary use in such as entertainments, parties, meetings or the like.
    • (3) Because of semipermanent installation, a some measure to cope with damage from wind becomes necessary, resulting in an expensinve mounting frame.
    • (4) The larger the size of the display unit becomes, the greater the weight and a need of strong mounting frame become. Thus, it is impossible to make a larger display unit than a maximum presently available one of 90 x 90 cm. Consequently, it becomes difficult to clearly recognize a displayed character from a remote position and to attract viewers when the display unit is used outdoors.
    Object of the Invention
  • It is therefore an object of the present invention to solve the above prior art problems and provide a large display unit of flexible structure, and with light weight, small volume, and good portability.
  • According to the present invention, the large display unit comprises a predetermined number of display dots made of light emitting elements disposed in matrix manner relative to a display structure, wherein each of said display dots comprises one or more light emitting elements mounted on a printed circuit board, and said display structure is made of a flexible sheet member which sandwiches said display dots by means of adhesive agent or the like.
    • Brief Description of the Drawings
    • Fig.1 is a front view showing an embodiment of the sheet type large display unit according to the present invention;
    • Fig.2 shows an example of a displayed character on the display unit;
    • Fig.3 is a perspective, broken view showing the main part of the embodiment shown in Fig.1; and
    • Fig.4 is a perspective, broken view showing a conventional display unit.
    Detailed Description of the Invention
  • A preferred embodiment of the sheet type large display unit according to the present invention will be described with reference to the accompanying drawings.
  • Referring to Fig.1, a sheet type large display unit (hereinunder referred to simply as a display unit) is generally indicated by reference numeral 1. A display surface member 2 of the display unit 1 is adapted to be mounted with display dots 3 disposed in matrix similar to the conventional. For example, 18 x 18, 24 x 24 dot matrix or the like may be selectively used in dependence upon a desired character resolution. By selectively turning on proper display dots 3, a character, for example, Chinese character "
    Figure imgb0001
    " as shown in Fig.2 can be displayed. One character is generally displayed on one display unit 1.
  • The detail of the display unit 1 is shown in Fig.3, wherein the display surface member 2 generally of square shape is made of a sheet type transparent resin rich in flexibility, the reverse side of which is coated with an adhesive agent.
  • Each of the display dots 3 is constructed of a desired number of light emitting elements 3b such as light emitting diodes (LEDS) mounted on a substrate 3a such as a printed circuit board. For example, 576 display dots 3 are used for a 24 x 24 dot display unit, and each display dot 3 is connected by lead wires 4 to a driver circuit (not shown) to drive it in a specific drive method such as dynamic, static or other drive methods.
  • The display dots 3 on the substrate 3a and the lead wires 4 are fixedly attached to a back sheet 5. The back sheet 5 is covered with the display surface member 2 to fixedly attach them together, to thus assemble the display unit 1 of this invention.
  • Various modifications may be made to the above embodiment. For example, the substrate 3a for mounting the display dots 3 may use a printed circuit board either of hard or soft material. The attachment among the display surface member 2, display dots 3 and back sheet 5 may be effected using an adhesive agent, or other means such as high frequency welding whereby peripheral portions thereof are welded. Further, colors of the light emitting elements 3b disposed within each display dot 3 may use red, yellow and green. To selectively activate the light emitting element, it becomes possible to realize a display unit 1 of three colors.
  • Since the display unit 1 is constructed of the display surface member and back sheet which are both made of flexible material, the entire structure of the display unit 1 is flexible. In addition, the display surface member 2 and back sheet 5 are made of sheet material so that the display unit 1 becomes thin and light weighted. Furthermore, the display dots 3 are covered by the display surface member 2 and back sheet 5 so that a sufficient water proof performance is realized.
  • A water proof connector and water proof driver circuit may be provided on the display unit 1 as conventional.
  • As described so far, the display unit of this invention is applicable to various fields in practical use due to its sheet structure, and has the following advantages:
    • (1) The weight is light, and the display unit can be folded or rolled up so that transportation and maintenance become very easy.
    • (2) The display unit is light weighted and can be properly installed with simple means such as those used for a hanging screen. Therefore, temporary installation for parties, meetings or the like becomes easy, or dismounting the display unit can be made readily in an emergency such as typhoon. The display unit is low in cost and has a good portability.
    • (3) A large type display unit can be readily realized which allows easy recognition of characters from a remote position, thus attracting a viewer.

Claims (3)

1. A sheet type large display unit (1) comprising a pre­determined number of display dots (3) made of light emitting elements (3b) disposed in matrix manner rela­tive to a display structure (2, 5), wherein each of said display dots (3) comprises one or more light emit­ting elements (3b) mounted on a printed circuit board (3a), and said display structure is made of a flexible sheet member (2, 5) which sandwiches said display dots (3) by means of adhesive agent or the like.
2. A sheet type large display unit according to claim 1, wherein said light emitting elements (3b) comprise light emitting devices.
3. A sheet type large display unit according to claim 1 or 2, wherein the number of colors of said light emitting elements (3b) is two or more.
EP19880118582 1988-11-08 1988-11-08 Sheet type large display unit Expired - Lifetime EP0367851B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19883886404 DE3886404T2 (en) 1988-11-08 1988-11-08 Film-like large image display unit.
EP19880118582 EP0367851B1 (en) 1988-11-08 1988-11-08 Sheet type large display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19880118582 EP0367851B1 (en) 1988-11-08 1988-11-08 Sheet type large display unit

Publications (2)

Publication Number Publication Date
EP0367851A1 true EP0367851A1 (en) 1990-05-16
EP0367851B1 EP0367851B1 (en) 1993-12-15

Family

ID=8199541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880118582 Expired - Lifetime EP0367851B1 (en) 1988-11-08 1988-11-08 Sheet type large display unit

Country Status (2)

Country Link
EP (1) EP0367851B1 (en)
DE (1) DE3886404T2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2036451A2 (en) * 1991-06-12 1993-05-16 Odeco Electronica S A Improved luminous screen
EP0594367A1 (en) * 1992-10-22 1994-04-27 Hanover Displays Limited A display device
EP0580082B1 (en) * 1992-07-20 1996-04-17 Wolfgang Dipl.-Ing. Priesemuth Optoelectronic device
ES2088758A2 (en) * 1993-01-18 1996-09-01 Odena Sergio Campoy Light matrix screen forming colour images.
FR2741986A1 (en) * 1995-12-05 1997-06-06 Aeg Schneider Automation DISPLAY DEVICE FOR A PROGRAMMABLE AUTOMATON

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037500A1 (en) * 1979-10-06 1981-04-23 Zettler-Elektro-Apparate AG, Näfels LIGHTING DIODE ARRANGEMENT TO DISPLAY LARGE STRUCTURES
FR2512238A1 (en) * 1981-08-12 1983-03-04 Werk Fernsehelektronik Veb LIGHT EMITTING DIODE DISPLAY DEVICE HAVING A HIGH INFORMATION CONTENT
GB2180383A (en) * 1985-09-14 1987-03-25 Paul William Baker Illuminated display panel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037500A1 (en) * 1979-10-06 1981-04-23 Zettler-Elektro-Apparate AG, Näfels LIGHTING DIODE ARRANGEMENT TO DISPLAY LARGE STRUCTURES
FR2512238A1 (en) * 1981-08-12 1983-03-04 Werk Fernsehelektronik Veb LIGHT EMITTING DIODE DISPLAY DEVICE HAVING A HIGH INFORMATION CONTENT
GB2180383A (en) * 1985-09-14 1987-03-25 Paul William Baker Illuminated display panel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2036451A2 (en) * 1991-06-12 1993-05-16 Odeco Electronica S A Improved luminous screen
EP0580082B1 (en) * 1992-07-20 1996-04-17 Wolfgang Dipl.-Ing. Priesemuth Optoelectronic device
EP0594367A1 (en) * 1992-10-22 1994-04-27 Hanover Displays Limited A display device
US5463827A (en) * 1992-10-22 1995-11-07 Hanover Displays Limited Display device
ES2088758A2 (en) * 1993-01-18 1996-09-01 Odena Sergio Campoy Light matrix screen forming colour images.
FR2741986A1 (en) * 1995-12-05 1997-06-06 Aeg Schneider Automation DISPLAY DEVICE FOR A PROGRAMMABLE AUTOMATON
WO1997021204A1 (en) * 1995-12-05 1997-06-12 Schneider Automation Display device for a programmable controller
AU710036B2 (en) * 1995-12-05 1999-09-09 Schneider Automation Inc. A display apparatus for programmable logic controllers
CN1110029C (en) * 1995-12-05 2003-05-28 施奈德自动化公司 Display device for programmable logic controller

Also Published As

Publication number Publication date
DE3886404D1 (en) 1994-01-27
DE3886404T2 (en) 1994-05-19
EP0367851B1 (en) 1993-12-15

Similar Documents

Publication Publication Date Title
KR960010770B1 (en) Sheet type large display unit
JP2004530932A (en) Composite display board
EP0166753B1 (en) A device for the presentation of information
EP0549679B1 (en) A display system
US7319408B2 (en) Led net display
US9767719B2 (en) Billboard or other large displays having artwork illuminated with an LED backlight array
US6379209B1 (en) Alpha-numeric character display panel
US4553345A (en) Display letter mounting and method therefor
EP0367851B1 (en) Sheet type large display unit
KR20180059223A (en) A framed advertising device using transparent led film
US6598711B2 (en) Indicating device
JPH0434551Y2 (en)
JP2008281662A (en) Big screen display panel and panel unit used for the same
KR200251058Y1 (en) A multi display board
CN217506827U (en) Soft screen
US5014047A (en) Display element, display method and apparatus using said element
CN214152303U (en) Electronic guideboard
WO2000013156A1 (en) Outdoor changeable message sign with protective layers
JP3215996U (en) Sign
CN201590212U (en) LED three-surface turning advertising board
JP2589122Y2 (en) Large signage posted at high places
KR200313606Y1 (en) A module of electric sign
JP3016684U (en) Information display sign
WO2005050598A1 (en) Modular display system
JPH0973276A (en) Electric sign device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19900830

17Q First examination report despatched

Effective date: 19920722

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 3886404

Country of ref document: DE

Date of ref document: 19940127

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19941108

26N No opposition filed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST