Electrophoretic display apparatus and electronic device having a boundary layer between an electrode and an electrophoretic layer
AssigneeSeiko Epson Corporation
InventorDaisuke Abe
Life of this patent
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Abstract
An electrophoretic display apparatus has an electrophoretic layer interposed between a first electrode and a second electrode each provided on the inner surface side of each of a pair of substrates and a boundary layer interposed between the first electrode and the electrophoretic layer. When the boundary layer has a thickness of T1 and a volume resistivity of ρ1 and the electrophoretic layer has a thickness of T0 and a volume resistivity of ρ0, the thickness and the volume resistivity of the boundary layer satisfy the formula (ρ1/T1)≧1×1013Ω, and the thickness and the volume resistivity of the boundary layer and the electrophoretic layer satisfy the formula (ρ1·T1)/(ρ0·T0)≦1/9.
Claims8
An electrophoretic display apparatus comprising:
- an electrophoretic layer interposed between a first electrode and a second electrode each provided on the inner surface side of each of a pair of substrates;
- and
- a boundary layer positioned in a boundary between the first electrode and the electrophoretic layer, wherein:
- when the boundary layer has a thickness of T1 cm and a volume resistivity of ρ1 Ω·cm and
- the electrophoretic layer has a thickness of T0 cm and a volume resistivity of ρ0 Ω·cm,
- the thickness and the volume resistivity of the boundary layer satisfy the following formula:
- (ρ1/T1)≧1×1013Ω;
- the thickness and the volume resistivity of the boundary layer and the electrophoretic layer satisfy the following formula:
- (ρ1·T1)/(ρ0·T0)≦1/9;
- and
- the thickness and the volume resistivity of the electrophoretic layer satisfy the following formula:
- (ρ0·T0)≧1×109 Ω·cm2.
An electrophoretic display apparatus comprising:
- an electrophoretic layer interposed between a first electrode and a second electrode each provided on the inner surface side of each of a pair of substrates;
- and
- a boundary layer positioned in a boundary between the first electrode and the electrophoretic layer, wherein:
- when the boundary layer has a thickness of T1 cm and a volume resistivity of ρ1 Ω·cm and
- the electrophoretic layer has a thickness of T0 cm and a volume resistivity of ρ0 Ω·cm,
- the thickness and the volume resistivity of the boundary layer satisfy the following formula:
- (ρ1/T1)≧5×1012Ω;
- the thickness and the volume resistivity of the boundary layer and the electrophoretic layer satisfy the following formula:
- (ρ1·T1)/(ρ0·T0)≦2/3;
- and
- the thickness and the volume resistivity of the electrophoretic layer satisfy the following formula:
- (ρ0·T0)≧1×108Ω·cm2.
Dependencies are inferred from the claim text.