Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2011-06-07
2011-06-07
Spector, David N (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C345S107000
Reexamination Certificate
active
07957052
ABSTRACT:
A display device comprises a microcapsule-containing layer including a plurality of microcapsules. A variation of the outer diameters of the microcapsules can be defined by an average value and a CV value. Each of the microcapsules is comprised of: a shell having an inner surface; contact particles electrically charged and provided within the shell in an contact state that the contact particles are in contact with the inner surface of the shell; and a scattering body for scattering light; or a colored particles having a different hue from the hue of the contact particles. The display device further comprises a pair of electrodes that when an electrical voltage is applied to between the pair of electrodes, electrical fields to act on the contact particles are generated. The average value of the outer diameters of the microcapsules is in the range of 20 to 60 μm, and the CV value of the outer diameters of the microcapsules is 20% or less. In a case where the electrical voltage is applied to between the pair of electrodes, the contact particles are moved along the inner surface of the shell while maintaining the contact state with the inner surface of the shell.
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Hashimoto Hironobu
Kawase Takeo
Komatsu Harunobu
Kushino Mitsuo
Kuwamoto Tomoyuki
Nippon Shokubai Co. , Ltd.
Oliff & Berridg,e PLC
Seiko Epson Corporation
Spector David N
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