LIQUID CRYSTAL DISPLAY ELEMENT AND METHOD OF DRIVING THE ELEMENT
First Claim
1. A liquid crystal display element comprising:
- a display section having memory characteristics including a cholesteric liquid crystal layer and displaying an image when a voltage is applied to the cholesteric liquid crystal layer, the section being capable of keeping the image displayed without electric power;
a driving condition storing section for storing a plurality of different driving conditions including a voltage and an application period of the voltage; and
a control section determining a display period for which a presently displayed image has been displayed on the display section having memory characteristics when the displayed image is rewritten into a new image, acquiring a driving condition according to the display period from the driving condition storing section, and causing the display section having memory characteristics to display the new image based on the acquired driving condition.
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Accused Products
Abstract
The invention relates to a liquid crystal display element displaying an image using a liquid crystal layer having memory characteristics and a method of driving the element. A liquid crystal display element capable of suppressing the generation of an afterimage attributable to image sticking is provided along with a method of driving the same. The liquid crystal display element includes a display section having memory characteristics including a cholesteric liquid crystal layer and displaying an image when a voltage is applied to the cholesteric liquid crystal layer, the section being capable of keeping the image displayed without electric power, a driving condition storing section for storing a plurality of different driving conditions including a voltage and an application period of the voltage, and a control section determining a display period for which a presently displayed image has been displayed on the display section when the displayed image is rewritten into a new image, acquiring a driving condition according to the display period from the driving condition storing section, and causing the display section to display the new image based on the acquired driving condition.
21 Citations
19 Claims
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1. A liquid crystal display element comprising:
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a display section having memory characteristics including a cholesteric liquid crystal layer and displaying an image when a voltage is applied to the cholesteric liquid crystal layer, the section being capable of keeping the image displayed without electric power; a driving condition storing section for storing a plurality of different driving conditions including a voltage and an application period of the voltage; and a control section determining a display period for which a presently displayed image has been displayed on the display section having memory characteristics when the displayed image is rewritten into a new image, acquiring a driving condition according to the display period from the driving condition storing section, and causing the display section having memory characteristics to display the new image based on the acquired driving condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of driving a liquid crystal display element, comprising the steps of:
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determining a display period for which a presently displayed image has been displayed on a display section having memory characteristics when the displayed image is rewritten into a new image, the display section including a cholesteric liquid crystal layer and displaying an image when a voltage is applied to the cholesteric liquid crystal layer, the section being capable of keeping the image displayed without electric power; acquiring a driving condition according to the display period from a driving condition storing section; and causing the display section having memory characteristics to display the new image based on the acquired driving condition. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification