WO2004086346A1 - Economiseur pour afficheurs organiques - Google Patents

Economiseur pour afficheurs organiques Download PDF

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Publication number
WO2004086346A1
WO2004086346A1 PCT/EP2004/001546 EP2004001546W WO2004086346A1 WO 2004086346 A1 WO2004086346 A1 WO 2004086346A1 EP 2004001546 W EP2004001546 W EP 2004001546W WO 2004086346 A1 WO2004086346 A1 WO 2004086346A1
Authority
WO
WIPO (PCT)
Prior art keywords
display
photodetector
organic
photo detector
screensaver
Prior art date
Application number
PCT/EP2004/001546
Other languages
German (de)
English (en)
Inventor
Christoph Brabec
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 WO2004086346A1 publication Critical patent/WO2004086346A1/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/04—Display protection
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light

Definitions

  • Displays for mobile phones usually show the network operator. This has two negative effects. On the one hand, energy from the battery is consumed, on the other hand, the lifespan of the display is reduced.
  • the object of the invention is to provide a display with lower energy consumption and a longer service life.
  • a display of a device has a photodetector.
  • detection of light in particular ambient light and / or daylight, can be used to identify when the display is being viewed.
  • the photodetectors thus perform the function of a screensaver.
  • the photo detector is in particular a transparent and / or semi-transparent photo detector.
  • Such photodetectors are described in EP 706 225 AI and US 4,831,429. This means that the display can still be viewed even if the
  • Photo detector is arranged in the viewing direction on the display.
  • the photodetector is advantageously an organic photodetector.
  • organic photo detectors can be transparent or particularly well Realize semitransparent, on the other hand, organic photodetectors can be integrated directly into the manufacturing process of an organic display, for example by printing or printing the photodetector and the display.
  • the display is in particular an organic display that contains organic light-emitting diodes (OLEDs).
  • OLEDs organic light-emitting diodes
  • the display can also be an inorganic display, in particular an LCD, active and / or passive matrix display.
  • the display is preferably a flat display on which a large number of pixels can be displayed.
  • the display can advantageously be controlled as a function of the light measured by the photodetector.
  • the device has control means, in particular control means for switching the display on and off and / or control means for controlling the brightness and / or the contrast of the display.
  • the photodetector can be optically isolated from the display. This can be achieved, for example, by physically (mechanically) isolating the photodetector from the display. Alternatively or additionally, if the display is operated with refresh cycles, the
  • the photodetector can also be easily measured during the refresh cycles, i.e. when no light is being emitted by the display.
  • the device is, for example, a mobile terminal, in particular a cell phone and / or a PDA.
  • a method for producing a device with a display with a photodetector an emitter layer for the display and a photoactive layer for the photodetector are applied, in particular one above the other with further layers in between and / or next to one another, for example by printing.
  • the layers are preferably printed on the same / the same background, in particular on an intermediate layer located on a cathode or anode, in particular a transport layer.
  • a photo detector is a means of measuring light.
  • the photo detector is integrated in a display or arranged on it.
  • a pixel, i.e. a dot, of an organic display typically consists of an electrode, one or more intermediate layers (transport layers), one or more emitting layers, one or more further intermediate layers and a counter electrode at the end.
  • An organic photo detector has the same structure, only that a photoactive layer is used instead of the emitting layer. This layer must have a high efficiency for the photo-induced charge carrier generation. Both single organic layers and multiple organic layers and mixtures of donors and acceptors are conceivable. Either one can be either a (a) special conjugated polymer or molecule, (b) a mixture of polymers and fullerenes or other donors and acceptors, (c) use a mixture of small soluble molecules or (d) an evaporated layer of organic molecules.
  • This process is particularly interesting for organic advertisements that are produced by a printing process.
  • screen printing or ink jet printing is used here.
  • the emitter can be applied in the first printing step and the photodetectors in a second printing step.
  • the metallization is then carried out for the entire component in the same step.
  • the photodetector sits directly in the display or is arranged on it and therefore does not cause any additional costs for sealing or for an electrical connection. This saves a time-consuming process of packing and connecting a separate photodiode in the housing.
  • Photodetectors for screen protection and / or energy conservation in a display can also be used for inorganic displays, such as LCD, active or passive matrix.
  • the photodetectors in the form of diodes can also be used for brightness control of the display at the same time. If you protect the photodetectors from being illuminated by the display, only the ambient light incident on the display can be measured. Such protection can be provided either by mechanically sealing off or by only switching the diode on or reading it out during refresh cycles of the display. As a result, the brightness and / or the contrast of the display can be optimized immediately for the prevailing light conditions.
  • the organic photo detectors integrated in the display thus adjust the brightness of the individual pixels of the display automatically adjusts to the ambient light and thereby optimize it for the respective lighting conditions.
  • An organic or inorganic mobile phone display can be realized by the invention, which is automatically switched off when the mobile phone is plugged in and is automatically switched on again when pulled out, being controlled by one or more printed photo detectors in the display.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

L'afficheur d'un dispositif possède un photodétecteur.
PCT/EP2004/001546 2003-03-28 2004-02-18 Economiseur pour afficheurs organiques WO2004086346A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003114166 DE10314166A1 (de) 2003-03-28 2003-03-28 Screensaver für organische Displays
DE10314166.9 2003-03-28

Publications (1)

Publication Number Publication Date
WO2004086346A1 true WO2004086346A1 (fr) 2004-10-07

Family

ID=32980790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/001546 WO2004086346A1 (fr) 2003-03-28 2004-02-18 Economiseur pour afficheurs organiques

Country Status (2)

Country Link
DE (1) DE10314166A1 (fr)
WO (1) WO2004086346A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5747938A (en) * 1994-10-18 1998-05-05 Norand Corporation Automatic control electroluminescent backlight panel
US5818553A (en) * 1995-04-10 1998-10-06 Norand Corporation Contrast control for a backlit LCD
WO1998052182A1 (fr) * 1997-05-14 1998-11-19 Unisplay S.A. Systeme d'affichage avec correction de la luminosite
EP0923067A1 (fr) * 1997-03-12 1999-06-16 Seiko Epson Corporation Circuit pixel, afficheur, et equipement electronique a dispositif photoemetteur commande par courant
WO1999053472A1 (fr) * 1998-04-15 1999-10-21 Cambridge Display Technology Ltd. Dispositif de commande d'affichage comprenant des modes d'economie de la consommation d'energie
US6303943B1 (en) * 1998-02-02 2001-10-16 Uniax Corporation Organic diodes with switchable photosensitivity useful in photodetectors

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4831429A (en) * 1985-06-27 1989-05-16 Sanyo Electric Co., Ltd. Transparent photo detector device
JPH08111540A (ja) * 1994-08-19 1996-04-30 Texas Instr Inc <Ti> 透明な共振トンネリング光検出器
US5831693A (en) * 1996-02-22 1998-11-03 Honeywell Integrated light sensor for an active matrix liquid crystal display panel
KR100282393B1 (ko) * 1998-06-17 2001-02-15 구자홍 유기이엘(el)디스플레이소자제조방법
US6451415B1 (en) * 1998-08-19 2002-09-17 The Trustees Of Princeton University Organic photosensitive optoelectronic device with an exciton blocking layer
JP2004505553A (ja) * 2000-07-31 2004-02-19 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 画像感知表示装置
US6433358B1 (en) * 2000-09-11 2002-08-13 International Business Machines Corporation Method for producing an organic light emitting device (OLED) and OLED produced thereby
DE10106587A1 (de) * 2001-02-13 2002-08-14 Siemens Ag Display

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5747938A (en) * 1994-10-18 1998-05-05 Norand Corporation Automatic control electroluminescent backlight panel
US5818553A (en) * 1995-04-10 1998-10-06 Norand Corporation Contrast control for a backlit LCD
EP0923067A1 (fr) * 1997-03-12 1999-06-16 Seiko Epson Corporation Circuit pixel, afficheur, et equipement electronique a dispositif photoemetteur commande par courant
WO1998052182A1 (fr) * 1997-05-14 1998-11-19 Unisplay S.A. Systeme d'affichage avec correction de la luminosite
US6303943B1 (en) * 1998-02-02 2001-10-16 Uniax Corporation Organic diodes with switchable photosensitivity useful in photodetectors
WO1999053472A1 (fr) * 1998-04-15 1999-10-21 Cambridge Display Technology Ltd. Dispositif de commande d'affichage comprenant des modes d'economie de la consommation d'energie

Also Published As

Publication number Publication date
DE10314166A1 (de) 2004-10-14

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