Liquid crystal device, electronic apparatus, and physical property measurement method for liquid crystal layer
AssigneeSeiko Epson Corporation
InventorShinsuke Fujikawa
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Abstract
A liquid crystal device includes a common electrode as a first electrode, a pixel electrode as a second electrode, a liquid crystal layer to which a drive voltage is applied for one refresh period as a first refresh period, and a measurement circuit that applies an inspection voltage to the liquid crystal layer between the common electrode and the pixel electrode, sets a period that is longer than one refresh period after the application of the inspection voltage is stopped, and measures a voltage between the common electrode and the pixel electrode.
Claims15
A liquid crystal device comprising:
- a first electrode;
- a second electrode;
- a liquid crystal layer to which a drive voltage is applied in each first refresh period of time of the liquid crystal layer;
- and
- a measurement circuit configured to apply an inspection voltage to the liquid crystal layer between the first electrode and the second electrode, and measure a voltage potential of the first electrode after a period of time, that is longer than the first refresh period, has elapsed after the application of the inspection voltage is stopped.
A liquid crystal device comprising:
- a first electrode;
- a second electrode;
- a liquid crystal layer to which a drive voltage that is equal to or higher than a threshold voltage is applied;
- and
- a measurement circuit configured to apply an inspection voltage that is lower than or equal to the threshold voltage of the liquid crystal layer and higher than 0 V as a voltage to be applied to the liquid crystal layer between the first electrode and the second electrode and measure a voltage potential of the first electrode after the application of the inspection voltage is stopped.
A physical property measurement method for a liquid crystal layer in a liquid crystal device that applies a drive voltage that is equal to or higher than a threshold voltage of the liquid crystal layer, the method comprising:
- applying an inspection voltage that is lower than or equal to the threshold voltage and higher than 0 V to the liquid crystal layer between a first electrode and a second electrode that are disposed to apply an electric field to the liquid crystal layer;
- and
- detecting a voltage potential of the first electrode after the application of the inspection voltage is stopped.
Dependencies are inferred from the claim text.