WO2006061756A3 - A photosensitive electrophoretic display - Google Patents

A photosensitive electrophoretic display Download PDF

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Publication number
WO2006061756A3
WO2006061756A3 PCT/IB2005/054028 IB2005054028W WO2006061756A3 WO 2006061756 A3 WO2006061756 A3 WO 2006061756A3 IB 2005054028 W IB2005054028 W IB 2005054028W WO 2006061756 A3 WO2006061756 A3 WO 2006061756A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
photoconductor
rel
illuminated
pixels
Prior art date
Application number
PCT/IB2005/054028
Other languages
French (fr)
Other versions
WO2006061756A2 (en
Inventor
Alwin R M Verschueren
Original Assignee
Koninkl Philips Electronics Nv
Alwin R M Verschueren
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 Koninkl Philips Electronics Nv, Alwin R M Verschueren filed Critical Koninkl Philips Electronics Nv
Publication of WO2006061756A2 publication Critical patent/WO2006061756A2/en
Publication of WO2006061756A3 publication Critical patent/WO2006061756A3/en

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
    • G09G3/34—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
    • G09G3/3433—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 using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—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 using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
    • 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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • 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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/1676—Electrodes
    • 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
    • G09G2360/141—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light conveying information used for selecting or modulating the light emitting or modulating element
    • G09G2360/142—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light conveying information used for selecting or modulating the light emitting or modulating element the light being detected by light detection means within each pixel

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

A photosensitive electrophoretic display comprises pixels with an electrophoretic material (EF), and a photoconductor (PH) with a first side directed towards the electrophoretic material (EF). The pixels further comprises a first electrode (REl) and a second electrode (RE2) which both are transparent and which both are arranged at a second side of the photoconductor (PH) opposing the first side. In this construction, the photoconductor (PH) if not illuminated acts as a insulator and the electrical field in the electrophoretical material is defined by a voltage difference between the first electrode (REl) and the second electrode (RE2). If the photoconductor (PH) is illuminated, it acts as a conductor with a voltage level which is substantially the average of the voltage levels on the first electrode (REl) and the second electrode (RE2). Thus, dependent on whether the photoconductor (PH) is illuminated or not, different electrical fields occur in the electrophoretical material. These different fields are used to obtain different optical states of the pixels.
PCT/IB2005/054028 2004-12-09 2005-12-02 A photosensitive electrophoretic display WO2006061756A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP04106429 2004-12-09
EP04106429.6 2004-12-09
EP05100228.5 2005-01-17
EP05100228 2005-01-17
EP05100530.4 2005-01-27
EP05100530 2005-01-27

Publications (2)

Publication Number Publication Date
WO2006061756A2 WO2006061756A2 (en) 2006-06-15
WO2006061756A3 true WO2006061756A3 (en) 2009-04-30

Family

ID=36578296

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/054028 WO2006061756A2 (en) 2004-12-09 2005-12-02 A photosensitive electrophoretic display

Country Status (1)

Country Link
WO (1) WO2006061756A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686524A (en) * 1985-11-04 1987-08-11 North American Philips Corporation Photosensitive electrophoretic displays
WO2004090624A1 (en) * 2003-04-08 2004-10-21 Koninklijke Philips Electronics N.V. A display and a method of displaying and storing images

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686524A (en) * 1985-11-04 1987-08-11 North American Philips Corporation Photosensitive electrophoretic displays
WO2004090624A1 (en) * 2003-04-08 2004-10-21 Koninklijke Philips Electronics N.V. A display and a method of displaying and storing images

Also Published As

Publication number Publication date
WO2006061756A2 (en) 2006-06-15

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