Display panel driving apparatus for increasing gamma value of image data, method of driving display panel using the same and display apparatus having the same
AssigneeSamsung Display Co., Ltd.
InventorsYoon-Gu Kim, Bong-Im Park, Ik-Hyun Ahn, Hyun-sik Hwang, Woo-Joo Lee, Jin-Young Lee
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Abstract
A display panel driving apparatus includes a data processing circuit, a data driver, and a gate driver. The data processing circuit increases a first gamma value of input image data of which the gamma value is 0, according to a second gamma value of the input image data of which the second gamma value is not 0. The data driving part outputs a data signal based on the output image data to a data line. The gate driving part outputs a gate signal to a gate line.
Claims17
A display panel driving apparatus comprising:
- a data processing circuit configured to increase a first gamma value associated with input image data according to a second gamma value associated with the input image data when the first gamma value is 0 and the second gamma value is not 0, and adjust the input image data using the increased first gamma value and the second gamma value to output image data including first output data, second output data and third output data;
- a data driver configured to output a data signal based on the output image data to a data line of a display panel;
- and
- a gate driver configured to output a gate signal to a gate line of the display panel,
- wherein the data processing circuit increases the first gamma value by multiplying the second gamma value by a pre-defined value to obtain a result and setting the increased first gamma value to the result.
A method of driving a display panel, the method comprising:
- increasing a first gamma value associated with input image data according to a second gamma value associated with the input image data when the first gamma value is 0 and the second gamma value is not 0, and adjust the input image data using the increased first gamma value and the second gamma value to output image data including first output data, second output data and third output data;
- outputting a data signal based on the output image data to a data line of the display panel;
- and
- outputting a gate signal to a gate line of the display panel,
- wherein the increasing comprises increasing the first gamma value by multiplying the second gamma value by a pre-defined value to obtain a result and setting the increased first gamma value to the result.
A display apparatus comprising:
- a display panel including a data line and a gate line;
- and
- a display panel driving apparatus comprising:
- a gate driver configured to output a gate signal to the gate line;
- a data processing circuit configured to increase a first gamma value of first input data, according to a second gamma value of second input data and a third gamma value of third input data, when the first gamma value is 0, the second gamma value is non-zero, and the third gamma value is non-zero, to output image data including first output data, second output data and third output data;
- and
- a data driver configured to output a data signal based on the output image data output from the data processing circuit to the data line, wherein input image data comprising the first input data, the second input data, and the third input data is input to the data processing circuit,
- wherein the first gamma value is increased by averaging the second gamma value with the third gamma value to obtain a first result, multiplying the first result by a pre-defined value to obtain a second result and setting the increased first gamma value to the second result.
Dependencies are inferred from the claim text.