WO2002019775A2 - Elektrolumineszenz-display - Google Patents
Elektrolumineszenz-display Download PDFInfo
- Publication number
- WO2002019775A2 WO2002019775A2 PCT/EP2001/009546 EP0109546W WO0219775A2 WO 2002019775 A2 WO2002019775 A2 WO 2002019775A2 EP 0109546 W EP0109546 W EP 0109546W WO 0219775 A2 WO0219775 A2 WO 0219775A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electroluminescent display
- lighting unit
- unit
- display according
- electrodes
- Prior art date
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
- G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
- G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
- G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B44/00—Circuit arrangements for operating electroluminescent light sources
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
-
- 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
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Definitions
- the invention relates to an electroluminescent display with a lighting unit, comprising an electroluminescent layer arranged between two controllably connected electrodes.
- the electroluminescent display itself consists of a layer stack, starting with a metal electrode on which a dielectric is applied.
- the actual electroluminescent layer which in turn is covered by a second electrode, is located on the dielectric.
- the further layers covering the electroluminescent layer are transparent for the light beams emitted by the electroluminescent layer.
- the transparent electrode is generally covered with a cover glass or a transparent carrier film.
- electroluminescent layers inorganic materials such as For example, phosphorus or organic materials can be used, which can be doped differently depending on the wavelength of the light to be generated.
- electroluminescent displays In addition to their unmistakable advantages, electroluminescent displays, however, have some lighting properties that severely limit their applicability, particularly for applications in the automotive sector. So the currently available electroluminescent layers still a relatively significant reduction in their light output depending on their lifespan as well as a strong dependence of the emitted light intensity and color on the ambient temperature. These undesirable changes could be counteracted by targeted readjustment of the operating parameters supply voltage and frequency, but this requires a detection of the current lighting status of the display.
- the invention is therefore based on the object of creating an electroluminescent display which is expanded by means of detecting the current lighting state without sacrificing its particular advantages, in particular with regard to the flat structure.
- the lighting unit on the side of its transparent electrode is assigned a detector unit which is likewise formed by an electroluminescent layer arranged between two electrodes, at least the electrode facing the transparent electrode of the lighting unit being transparent.
- the detector unit covers only a relatively small area of the lighting unit.
- the detector unit covers an area of the lighting unit in the form of a peripheral frame.
- Fig. 1 A schematic sectional view of an embodiment of an electroluminescent display according to the invention
- the electroluminescent display according to the invention comprises a lighting unit 1, which is essentially formed from an electroluminescent layer 4 arranged between two electrodes 2 and 3, the one electrode 2 through a dielectric intermediate layer 2 'of the electroluminescent layer 4 is separated, and the other electrode 3 is made transparent and is covered by a likewise transparent carrier film 5.
- the two electrodes 2 and 3 are connected via lines 12 'and 12' to an alternating voltage source 11, from which an alternating voltage with an adjustable amplitude and frequency is applied to them and thereby excited to light up.
- a detector unit 6 is assigned to the lighting unit 1 on its lighting side, ie opposite the side of the carrier film 5 in the same construction.
- the detection unit 6. • consists of an electroluminescent layer 9 arranged between two electrodes 7 and 8, one electrode 7 being separated from the electroluminescent layer 9 by a dielectric intermediate layer 7 ', and the electrode 8 opposite the carrier film 5 being made transparent.
- the two electrodes 7 and 8 of the detector unit 6 are connected to a capacitance-controlled oscillator 10 via lines 13 and 13 '.
- the effect is exploited that the plate capacitor formed by the two electrodes 7 and 8 changes its capacitance as a function of the light incident on the electroluminescent layer 9.
- the respective capacitance value of the capacitor is converted by the capacitance-controlled oscillator 10 into a frequency, which in turn is used to control the controllable voltage source 11.
- FIG. 2 an alternative construction concept, in which only one-sided printing of the carrier film 5 is required, which is advantageous in terms of process technology.
- the arrangement shown in FIG. 2 is an intermediate stage in the manufacturing process, in which the large-area lighting unit 1 and the detector unit 6, which is relatively small in comparison with this, are arranged next to one another on the same side of the carrier film 5.
- the lighting unit 1 being designed as a lamp having a uniformly illuminated surface.
- the detector unit 6 is designed as a surface area covering the luminous area in the form of a peripheral frame. This results in a detection of the current lighting status of the display, which is largely representative of the entire area of the lighting unit.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001295485A AU2001295485A1 (en) | 2000-08-30 | 2001-08-18 | Electroluminescent display |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10042500A DE10042500A1 (de) | 2000-08-30 | 2000-08-30 | Elektrolumineszenz-Display |
DE10042500.3 | 2000-08-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002019775A2 true WO2002019775A2 (de) | 2002-03-07 |
WO2002019775A3 WO2002019775A3 (de) | 2002-05-23 |
Family
ID=7654247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/009546 WO2002019775A2 (de) | 2000-08-30 | 2001-08-18 | Elektrolumineszenz-display |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2001295485A1 (de) |
DE (1) | DE10042500A1 (de) |
WO (1) | WO2002019775A2 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007018996A1 (en) * | 2005-08-05 | 2007-02-15 | Hewlett-Packard Development Company, L.P. | Electroluminescent sign having a coded information region |
EP3076757A1 (de) * | 2015-03-30 | 2016-10-05 | OLEDWorks GmbH | Led-vorrichtung, led-ansteuerung und ansteuerungsverfahren |
EP3076756A1 (de) * | 2015-03-30 | 2016-10-05 | OLEDWorks GmbH | Led-vorrichtung, led-treiber und ansteuerungsverfahren |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5093654A (en) * | 1989-05-17 | 1992-03-03 | Eldec Corporation | Thin-film electroluminescent display power supply system for providing regulated write voltages |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56116011A (en) * | 1980-02-18 | 1981-09-11 | Sharp Corp | Liquid crystal display device |
JPS58205823A (ja) * | 1982-05-25 | 1983-11-30 | Seiko Instr & Electronics Ltd | 光センサ− |
JPH11307245A (ja) * | 1998-04-24 | 1999-11-05 | Citizen Electronics Co Ltd | El駆動回路 |
-
2000
- 2000-08-30 DE DE10042500A patent/DE10042500A1/de not_active Withdrawn
-
2001
- 2001-08-18 WO PCT/EP2001/009546 patent/WO2002019775A2/de active Application Filing
- 2001-08-18 AU AU2001295485A patent/AU2001295485A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5093654A (en) * | 1989-05-17 | 1992-03-03 | Eldec Corporation | Thin-film electroluminescent display power supply system for providing regulated write voltages |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 008, no. 058 (P-261), 16. März 1984 (1984-03-16) & JP 58 205823 A (DAINI SEIKOSHA KK), 30. November 1983 (1983-11-30) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007018996A1 (en) * | 2005-08-05 | 2007-02-15 | Hewlett-Packard Development Company, L.P. | Electroluminescent sign having a coded information region |
EP3076757A1 (de) * | 2015-03-30 | 2016-10-05 | OLEDWorks GmbH | Led-vorrichtung, led-ansteuerung und ansteuerungsverfahren |
EP3076756A1 (de) * | 2015-03-30 | 2016-10-05 | OLEDWorks GmbH | Led-vorrichtung, led-treiber und ansteuerungsverfahren |
WO2016156375A1 (en) * | 2015-03-30 | 2016-10-06 | Oledworks Gmbh | Led device, led driver, and driving method |
WO2016156373A1 (en) * | 2015-03-30 | 2016-10-06 | Oledworks Gmbh | Led device, led driver, and driving method |
US10165649B2 (en) | 2015-03-30 | 2018-12-25 | Oledworks Gmbh | LED device, LED driver, and driving method |
Also Published As
Publication number | Publication date |
---|---|
AU2001295485A1 (en) | 2002-03-13 |
WO2002019775A3 (de) | 2002-05-23 |
DE10042500A1 (de) | 2002-03-14 |
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