LIQUID CRYSTAL DISPLAY DEVICE AND ELECTRONIC DEVICE
First Claim
Patent Images
1. A liquid crystal display device comprising:
- a driver circuit configured to control a display portion; and
a timing controller configured to control the driver circuit,wherein an image signal for displaying a still image is supplied to the timing controller, andwherein the timing controller is configured to reduce a refresh rate to display an image corresponding to the image signal on the display portion as a gray level number of the image signal is smaller.
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Abstract
It is an object to suppress deterioration of a displayed still image which is caused when a refresh rate is reduced. A liquid crystal display device includes a display portion controlled by a driver circuit and a timing controller for controlling the driver circuit. An image signal for displaying a still image is supplied to the timing controller. By the timing controller, a refresh rate in displaying an image corresponding to an image signal on the display portion reduced as a gray level number of the image signal is smaller.
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Citations
24 Claims
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1. A liquid crystal display device comprising:
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a driver circuit configured to control a display portion; and a timing controller configured to control the driver circuit, wherein an image signal for displaying a still image is supplied to the timing controller, and wherein the timing controller is configured to reduce a refresh rate to display an image corresponding to the image signal on the display portion as a gray level number of the image signal is smaller. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A liquid crystal display device comprising:
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a driver circuit configured to control a display portion; a timing controller configured to control the driver circuit; and an image process circuit configured to process an image signal, and to output a processing image signal to the timing controller, whether the timing controller is configured to reduce a refresh rate to display an image corresponding to the processing image signal on the display portion as a gray level number of the processing image signal is smaller. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A liquid crystal display device comprising:
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a driver circuit configured to control a display portion; and a timing controller configured to control the driver circuit, wherein the timing controller is configured to convert a first refresh rate into a second refresh rate in the display portion, wherein the first refresh rate corresponds to a first image signal which has a first gray level number, and the second refresh rate corresponds to a second image signal which has a second gray level number, and wherein the second gray level number is smaller than the first gray level number. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A liquid crystal display device comprising:
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a driver circuit configured to control a display portion; a timing controller configured to control the driver circuit; and an image process circuit configured to process an image signal, and output a processing image signal to the timing controller, whether the timing controller is configured to convert a first refresh rate into a second refresh rate in accordance with the processing image signal in the display portion, wherein the first refresh rate corresponds to a first image signal which has a first gray level number, and the second refresh rate corresponds to the processing image signal which has a second gray level number, and wherein the second gray level number is smaller than the first gray level number. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification