WO2004113999A1 - Flexible display device - Google Patents

Flexible display device Download PDF

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Publication number
WO2004113999A1
WO2004113999A1 PCT/EP2004/050661 EP2004050661W WO2004113999A1 WO 2004113999 A1 WO2004113999 A1 WO 2004113999A1 EP 2004050661 W EP2004050661 W EP 2004050661W WO 2004113999 A1 WO2004113999 A1 WO 2004113999A1
Authority
WO
WIPO (PCT)
Prior art keywords
display device
area
effective area
optically effective
flexible display
Prior art date
Application number
PCT/EP2004/050661
Other languages
German (de)
French (fr)
Inventor
Gerhard Bock
Marco Werner
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2004113999A1 publication Critical patent/WO2004113999A1/en

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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
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • 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

Definitions

  • the invention relates to a flexible display device according to the preamble of claim 1.
  • Conventional graphic displays such as LC displays, are manufactured on SB glass substrates.
  • they consist of an optically effective area OB and a control circuit AS.
  • the optically effective area OB pixels are linked by a passive matrix circuit.
  • the control circuit AS is connected to the optically active area OB via lines L, which are not individually identified, the lines L preferably being realized by electrically conductive adhesive connections on the glass substrate SB.
  • Flexible displays offer advantages in terms of greater breaking strength and lower costs.
  • the flexible displays are manufactured on the basis of plastic substrates. With these displays, conventional arrangements of display and control circuit pose problems.
  • the mechanical stability of the connection between the control circuit AS and the flexible plastic substrate is no longer given when the display device AE is bent.
  • the area around the control circuit AS which is preferably designed as a chip, must not be bent or folded.
  • the control circuit AS are formed by several chips. This means that several chips have to be arranged on the glass substrate SB. If these chips are arranged on one side of the substrate SB, the connecting lines L to the matrix occupy a large area, with a given substrate size the optically effective area OB is reduced. Will the chips be around arranged around the optically effective area, the whole display is no longer flexible and bendable.
  • the invention has for its object to flexibly design a display device of the type mentioned. This object is achieved by the features specified in claim 1.
  • FIG. 1 shows a display device with an optically effective area and outsourced electronics for control according to the prior art
  • FIG. 2 shows the display device designed according to the invention.
  • control circuit AS is implemented by organic semiconductors.
  • This organic electronics OE can be produced flexibly and cost-effectively in printing processes. In the simplest case of control, relatively simple circuits from shift registers are sufficient.
  • the organic electronics OE is arranged, for example, on two sides of the optically active area OB, so that row-column control is provided.
  • the flexible organic electronics OE is arranged as close as possible to the optically effective area OB. This shortens the supply lines to the matrix, the optically effective area is maximized in relation to the substrate size.
  • the refresh rate of the display or the display device AE can be increased by dividing the display into separate control areas.
  • the mechanical stability of the display device AE is ensured by printing the electronics OE on the same plastic substrate SB as the optically effective area OB.

Abstract

The invention relates to a display device (AE) comprising an optically active region (OB) for the pixel-based representation of image contents. According to the invention, a flexibly embodied optical region (OB) and a flexibly organic electronic element (OE) are provided in order to control the region (OB).

Description

Beschreibungdescription
Flexible Anzeigeeinrichtung Die Erfindung betrifft eine flexibel ausgebildete Anzeigeeinrichtung gemäß dem Oberbegriff des Patentanspruchs 1.Flexible display device The invention relates to a flexible display device according to the preamble of claim 1.
Herkömmliche Grafikdisplays, wie beispielsweise LC-Displays, werden auf Glassubstraten SB gefertigt. Sie bestehen im ein- fachsten Fall, wie in Figur 1 dargestellt, aus einem optisch wirksamen Bereich OB, und einer Ansteuerschaltung AS. In dem optisch wirksamen Bereich OB sind Pixel durch eine Passiv- Matrix-Schaltung verknüpft. Die Ansteuerschaltung AS ist über nicht einzeln bezeichnete Leitungen L mit dem optisch wirksa- men Bereich OB verbunden, wobei die Leitungen L vorzugsweise durch elektrisch leitende Klebeverbindungen auf dem Glassubstrat SB realisiert sind.Conventional graphic displays, such as LC displays, are manufactured on SB glass substrates. In the simplest case, as shown in FIG. 1, they consist of an optically effective area OB and a control circuit AS. In the optically effective area OB, pixels are linked by a passive matrix circuit. The control circuit AS is connected to the optically active area OB via lines L, which are not individually identified, the lines L preferably being realized by electrically conductive adhesive connections on the glass substrate SB.
Flexible Displays bieten Vorteile hinsichtlich der grosseren Bruchfestigkeit und der geringeren Kosten. Die flexiblen Displays werden auf der Basis von Kunststoffsubstraten gefertigt. Bei diesen Displays werfen herkömmliche Anordnungen aus Display und Ansteuerschaltung Probleme auf. Die mechanische Stabilität der Verbindung zwischen der Ansteuerschaltung AS und dem flexiblen Kunststoffsubstrat ist bei Biegen der Anzeigeeinrichtung AE nicht mehr gegeben. Der Bereich um die vorzugsweise als Chip ausgebildete Ansteuerschaltung AS darf nicht gebogen oder gefaltet werden.Flexible displays offer advantages in terms of greater breaking strength and lower costs. The flexible displays are manufactured on the basis of plastic substrates. With these displays, conventional arrangements of display and control circuit pose problems. The mechanical stability of the connection between the control circuit AS and the flexible plastic substrate is no longer given when the display device AE is bent. The area around the control circuit AS, which is preferably designed as a chip, must not be bent or folded.
Bei höheren Auflosungen der Anzeigeeinrichtung AE uss die Ansteuerschaltung AS durch mehrere Chips gebildet werden. Das heisst, es müssen mehrere Chips auf dem Glassubstrat SB angeordnet werden. Werden diese Chips auf einer Seite des Sub- strates SB angeordnet, so belegen die Anschlussleitungen L zur Matrix viel Flache, bei gegebener Substratgroße reduziert sich der optisch wirksamen Bereich OB. Werden die Chips um den optisch wirksamen Bereich herum angeordnet, so ist das ganze Display nicht mehr flexibel und biegbar.At higher resolutions of the display device AE uss the control circuit AS are formed by several chips. This means that several chips have to be arranged on the glass substrate SB. If these chips are arranged on one side of the substrate SB, the connecting lines L to the matrix occupy a large area, with a given substrate size the optically effective area OB is reduced. Will the chips be around arranged around the optically effective area, the whole display is no longer flexible and bendable.
Bei einer hohen Chipanzahl steigen Material- und Handlingkos- ten sowie die Ausfallrate.With a high number of chips, material and handling costs as well as the failure rate increase.
Der Erfindung liegt die Aufgabe zugrunde, eine Anzeigeeinrichtung der eingangs genannten Art flexibel auszubilden. Diese Aufgabe wird erfindungsgemäß durch die im Patentanspruch 1 angegebenen Merkmale gelöst.The invention has for its object to flexibly design a display device of the type mentioned. This object is achieved by the features specified in claim 1.
Im Folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispieles beschrieben. Dabei zeigenThe invention is described below using an exemplary embodiment shown in the drawing. Show
Figur 1 eine Anzeigeeinrichtung mit einem optisch wirksamen Bereich und einer ausgelagerten Elektronik zur Ansteuerung gemäss dem Stand der Technik, und Figur 2 die erfindungsgemäß ausgebildete Anzeigeeinrichtung.1 shows a display device with an optically effective area and outsourced electronics for control according to the prior art, and FIG. 2 shows the display device designed according to the invention.
Bei der erfindungsgemäßen Anzeigeeinrichtung AE wird die Ansteuerschaltung AS durch organische Halbleiter realisiert. Diese organische Elektronik OE ist flexibel und kostengünstig in Druckprozessen herstellbar. Im einfachsten Fall der Ansteuerung genügen relativ einfache Schaltungen aus Schieberegistern.In the display device AE according to the invention, the control circuit AS is implemented by organic semiconductors. This organic electronics OE can be produced flexibly and cost-effectively in printing processes. In the simplest case of control, relatively simple circuits from shift registers are sufficient.
Die organische Elektronik OE, siehe Figur 2, ist beispiels- weise an zwei Seiten des optisch wirksamen Bereiches OB angeordnet, so dass eine Zeilen-Spaltenansteuerung gegeben ist.The organic electronics OE, see FIG. 2, is arranged, for example, on two sides of the optically active area OB, so that row-column control is provided.
Die flexible organische Elektronik OE wird so nahe wie möglich am optisch wirksamen Bereich OB angeordnet. Dadurch ver- kürzen sich die Zuleitungen zur Matrix, die optisch wirksame Fläche wird bezogen auf die Substratgröße maximiert. Zudem kann die Refreshrate des Displays beziehungsweise der Anzei geeinrichtung AE durch Teilung des Displays in separate Ansteuerbereiche erhöht werden.The flexible organic electronics OE is arranged as close as possible to the optically effective area OB. This shortens the supply lines to the matrix, the optically effective area is maximized in relation to the substrate size. In addition, the refresh rate of the display or the display device AE can be increased by dividing the display into separate control areas.
Die mechanische Stabilität der Anzeigeeinrichtung AE ist durch Aufdrucken der Elektronik OE auf dasselbe Kunststoffsubstrat SB wie der optisch wirksame Bereich OB gewährleistet. The mechanical stability of the display device AE is ensured by printing the electronics OE on the same plastic substrate SB as the optically effective area OB.

Claims

Patentansprüche claims
1. Anzeigeeinrichtung (AE) mit einem optisch wirksamen Bereich (OB) zur pixelweisen Darstellung von Bildinhalten, g e k e n n z e i c h n e t durch einen flexibel ausgebildeten optischen Bereich (OB) und eine ebenfalls flexible organische Elektronik (OE) zur Ansteuerung des Bereiches (OB) . 1.Display device (AE) with an optically effective area (OB) for pixel-by-pixel display of image content, provided by a flexibly designed optical area (OB) and also flexible organic electronics (OE) for controlling the area (OB).
2. Anzeigeeinrichtung nach Anspruch 1 d a d u r c h g e k e n n z e i c h n e t , dass der optisch wirksame Bereich (OB) und die organische Elektronik (OE) gemeinsam auf einem KunststoffSubstrat aufgebracht sind. 2. The display device as claimed in claim 1, that the optically active area (OB) and the organic electronics (OE) are applied together on a plastic substrate.
PCT/EP2004/050661 2003-06-26 2004-04-30 Flexible display device WO2004113999A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10328848 2003-06-26
DE10328848.1 2003-06-26

Publications (1)

Publication Number Publication Date
WO2004113999A1 true WO2004113999A1 (en) 2004-12-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (2)

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TW (1) TW200505264A (en)
WO (1) WO2004113999A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI424385B (en) 2009-03-18 2014-01-21 Prime View Int Co Ltd Flexible display device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020071082A1 (en) * 2000-09-07 2002-06-13 Hiroyuki Okita Display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020071082A1 (en) * 2000-09-07 2002-06-13 Hiroyuki Okita Display device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
MACH P ET AL: "MONOLITHICALLY INTEGRATED, FLEXIBLE DISPLAY OF POLYMER-DISPERSED LIQUID CRYSTAL DRIVEN BY RUBBER-STAMPED ORGANIC THIN-FILM TRANSISTORS", APPLIED PHYSICS LETTERS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 78, no. 23, 4 June 2001 (2001-06-04), pages 3592 - 3594, XP001073280, ISSN: 0003-6951 *
ROGERS J A ET AL: "ORGANIC SMART PIXELS AND COMPLEMENTARY INVERTER CIRCUITS FORMED ON PLASTIC SUBSTRATES BY CASTING AND RUBBER STAMPING", IEEE ELECTRON DEVICE LETTERS, IEEE INC. NEW YORK, US, vol. 21, no. 3, March 2000 (2000-03-01), pages 100 - 103, XP000936860, ISSN: 0741-3106 *
SHERAW C D ET AL: "ORGANIC THIN-FILM TRANSISTOR-DRIVEN POLYMER-DISPERSED LIQUID CRYSTAL DISPLAYS ON FLEXIBLE POLYMERIC SUBSTRATES", APPLIED PHYSICS LETTERS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 80, no. 6, 11 February 2002 (2002-02-11), pages 1088 - 1090, XP001102049, ISSN: 0003-6951 *

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