WO2008120510A1 - Electrophoretic display medium - Google Patents

Electrophoretic display medium Download PDF

Info

Publication number
WO2008120510A1
WO2008120510A1 PCT/JP2008/053152 JP2008053152W WO2008120510A1 WO 2008120510 A1 WO2008120510 A1 WO 2008120510A1 JP 2008053152 W JP2008053152 W JP 2008053152W WO 2008120510 A1 WO2008120510 A1 WO 2008120510A1
Authority
WO
WIPO (PCT)
Prior art keywords
child particles
particle
charged
particles
mother
Prior art date
Application number
PCT/JP2008/053152
Other languages
French (fr)
Japanese (ja)
Inventor
Yumiko Oshika
Original Assignee
Brother Kogyo Kabushiki Kaisha
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 Brother Kogyo Kabushiki Kaisha filed Critical Brother Kogyo Kabushiki Kaisha
Priority to JP2008511492A priority Critical patent/JPWO2008120510A1/en
Publication of WO2008120510A1 publication Critical patent/WO2008120510A1/en

Links

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 
    • G02F1/165—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
    • G02F2001/1678—Constructional details characterised by the composition or particle type

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

In white charged particle (50), first mother particle (51) is negatively charged while first child particles (52) are positively charged. In black charged particle (60), second mother particle (61) is provided with negative charge weaker than that of the first mother particle (51) while second child particles (62) are positively charged like the first child particles (52). Accordingly, even when collision of white charged particle (50) with black charged particle (60) causes detachment of first child particles (52) from the first mother particle (51), or detachment of second child particles (62) from the second mother particle (61), there would be no sticking between the first child particles (52) and the second child particles (62). Therefore, any change of the charging characteristics of the white charged particle (50) and black charged particle (60) by the detachment of first child particles (52) and second child particles (62) can be prevented, thereby avoiding any drop of contrast ratio of display panel (2) by changes of the charging characteristics of charged particles.
PCT/JP2008/053152 2007-03-29 2008-02-25 Electrophoretic display medium WO2008120510A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008511492A JPWO2008120510A1 (en) 2007-03-29 2008-02-25 Electrophoretic display medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-089822 2007-03-29
JP2007089822 2007-03-29

Publications (1)

Publication Number Publication Date
WO2008120510A1 true WO2008120510A1 (en) 2008-10-09

Family

ID=39808095

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/053152 WO2008120510A1 (en) 2007-03-29 2008-02-25 Electrophoretic display medium

Country Status (2)

Country Link
JP (1) JPWO2008120510A1 (en)
WO (1) WO2008120510A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010190962A (en) * 2009-02-16 2010-09-02 Konica Minolta Business Technologies Inc Display particle for image display device, and image display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004079441A1 (en) * 2003-03-07 2004-09-16 Matsushita Electric Industrial Co., Ltd. Display
WO2004090626A1 (en) * 2003-04-02 2004-10-21 Bridgestone Corporation Particle used for image display medium, image display panel using same, and image display
JP2005241779A (en) * 2004-02-25 2005-09-08 Bridgestone Corp Particle, powder and granular material, used for picture display device, and picture display device using them

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004079441A1 (en) * 2003-03-07 2004-09-16 Matsushita Electric Industrial Co., Ltd. Display
WO2004090626A1 (en) * 2003-04-02 2004-10-21 Bridgestone Corporation Particle used for image display medium, image display panel using same, and image display
JP2005241779A (en) * 2004-02-25 2005-09-08 Bridgestone Corp Particle, powder and granular material, used for picture display device, and picture display device using them

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010190962A (en) * 2009-02-16 2010-09-02 Konica Minolta Business Technologies Inc Display particle for image display device, and image display device

Also Published As

Publication number Publication date
JPWO2008120510A1 (en) 2010-07-15

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