Grayscale voltage generation device, display panel driver and display
AssigneePanasonic Corporation
InventorYoshito Date
Life of this patent
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Abstract
The grayscale voltage generation device includes a first line, a second line and a plurality of serial digital analog converters (DACs). A first reference voltage having a first voltage value is supplied to the first line, and a second reference voltage having a second voltage value is supplied to the second line. Each of the plurality of serial DACs receives grayscale information representing a grayscale level and generates a grayscale voltage having a voltage value corresponding to the grayscale information using the reference voltages supplied to the first and second lines.
Claims24
A grayscale voltage generation device comprising:
- a first line to which a first reference voltage having a first voltage value is supplied;
- a second line to which a second reference voltage having a second voltage value is supplied;
- and
- a plurality of serial digital analog converters (DACs),
- wherein each of the plurality of serial DACs receives grayscale information representing a grayscale level and generates a grayscale voltage having a voltage value corresponding to the grayscale information using the reference voltages supplied to the first and second lines.
A display panel driver for driving a display panel, comprising:
- a first line to which a first reference voltage having a first voltage value is supplied;
- a second line to which a second reference voltage having a second voltage value is supplied;
- a plurality of serial digital analog converters (DACs);
- and
- a plurality of output terminals,
- wherein each of the plurality of serial DACs receives grayscale information representing a grayscale level and generates a grayscale voltage having a voltage value corresponding to the grayscale information using the reference voltages supplied to the first and second lines, and
- each of the plurality of output terminals outputs either one of the grayscale voltages generated by the plurality of serial DACs.
A display comprising:
- a first line to which a first reference voltage having a first voltage value is supplied;
- a second line to which a second reference voltage having a second voltage value is supplied;
- a plurality of serial digital analog converters (DACs);
- and
- a display panel,
- wherein each of the plurality of serial DACs receives grayscale information representing a grayscale level and generates a grayscale voltage having a voltage value corresponding to the grayscale information using the reference voltages supplied to the first and second lines, and
- the display panel receives the grayscale voltages generated by the plurality of serial DACs.
Dependencies are inferred from the claim text.