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US 6,649,226 B2Granted
Liquid crystal material and liquid crystal display
AssigneeNEC LCD Technologies, Ltd.
InventorKimikazu Matsumoto
Life of this patent
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Abstract
A dissociating substance and its salt are added to a liquid crystal to keep the amount of ions included in the liquid crystal constant under temperature variation and to prevent alignment disorder in the liquid crystal due to static electricity and unevenness or spots due to excessive ion accumulation, leading to improved reliability.
Claims20
A liquid crystal material, comprising:
- a liquid crystal comprising an additive, said additive including a dissociating substance and a conjugate salt thereof.
A liquid crystal material, comprising:
- a liquid crystal comprising an additive, said additive including a dissociating substance and a conjugate salt thereof,
- wherein said dissociating substance and its conjugate salt are added to the liquid crystal in such a way that when the amount of said dissociating substance added to said liquid crystal is 1.0, said conjugate salt of said dissociating substance is added in a molar-concentration ratio of 0.01 to 100.
A liquid crystal material, comprising:
- a liquid crystal comprising an additive, said additive including a dissociating substance and a conjugate salt thereof,
- wherein said dissociating substance and its conjugate salt are added to said liquid crystal in such a way that when the amount of said dissociating substance added to said liquid crystal is 1.0, said conjugate salt of said dissociating substance is added in a molar-concentration ratio of 0.1 to 10.
A liquid crystal material, comprising:
- a liquid crystal comprising an additive, said additive including a dissociating substance and a conjugate salt thereof,
- wherein a specific resistance of said liquid crystal is 109 Ωcm to 1013 Ωcm.
Dependencies are inferred from the claim text.