Display device and driving circuit thereof
AssigneeRenesas Technology Corp.
InventorsYukari Katayama, Yoshiki Kurokawa, Akihito Akai, Goro Sakamaki
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Abstract
In a display device such as a liquid crystal display, a processing for compressing a range of display data (grayscale) to a low grayscale side (a grayscale range where response is fast) except for a high grayscale side (a grayscale range where response is slow) at a predetermined compression ratio to conduct display according to response characteristic of transition between grayscales and a temperature state and a processing for increasing a light amount of a backlight to compensate for luminance change due to the compression are performed, for example, in a liquid crystal panel of TN liquid crystal. Thereby, response can be made fast even at a low temperature time.
Claims22
A driving circuit of a display device which controls a light source whose light amount is controllable and an element which is disposed on a front side of the light source and by which transmissivity of light is controlled, thereby performing display, wherein
- when a temperature state near the element is lower than a reference temperature, a first processing for changing transmissivity of the element to be caused to correspond to a grayscale of an image to be displayed is performed such that a partial grayscale range of a whole output grayscale where a response speed at the element is relatively fast is used for display.
A driving circuit of a display device which controls a light source whose light amount is controllable and an element which is disposed on a front side of the light source and by which transmissivity of light is controlled, thereby performing display, wherein
- when a temperature state near the element is lower than a reference temperature, a first processing for changing transmissivity of the element to be caused to correspond to a grayscale of an image to be displayed and
- a second processing for changing a light amount of the light source to be caused to correspond to the change of the transmissivity are performed such that a partial grayscale range of a whole output grayscale where a response speed at the element is relatively fast is used for display.
A display device which controls a light source whose light amount is controllable and an element which is disposed on a front side of the light source and by which transmissivity of light is controlled, thereby performing display, wherein
- when a temperature state near the element is lower than a reference temperature, a first processing for changing transmissivity of the element to be caused to correspond to a grayscale of an image to be displayed is performed such that a partial grayscale range of a whole output grayscale where a response speed at the element is relatively fast is used for display.
A display device which controls a light source whose light amount is controllable and an element which is disposed on a front side of the light source and by which transmissivity of light is controlled, thereby performing display, wherein
- when a temperature state near the element is lower than a reference temperature, a first processing for changing transmissivity of the element to be caused to correspond to a grayscale of an image to be displayed and
- a second processing for changing a light amount of the light source to be caused to correspond to the change of the transmissivity are performed such that a partial grayscale range of a whole output grayscale where a response speed at the element is relatively fast is used for display.
Dependencies are inferred from the claim text.