Gamma correction system and method for display device
AssigneeSamsung Display Co., Ltd.
InventorsSung-Un Park, Ji-Yun Son, Dong-Ho Yoon
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Abstract
A gamma correction system and method for a display device are disclosed. According to one aspect, the gamma correction system includes a display panel configured to display an image, a measuring unit configured to acquire optical characteristic information from the image displayed on the display panel, and a display panel driver configured to convert a gamma data result value obtained after performing optical compensation for at least two sample gray values among a plurality of reference luminance values into a corresponding data voltage and calculate a data voltage for the rest of the luminance values for which optical compensation is not performed.
Claims13
A gamma correction system for a display device, comprising:
- a display panel configured to display an image;
- a measuring unit configured to acquire optical characteristic information from the image displayed on the display panel;
- and
- a display panel driver configured to convert a gamma data result value obtained after performing optical compensation for at least two sample gray values among a plurality of reference luminance values into a corresponding data voltage and calculate a data voltage for the rest of the luminance values for which optical compensation is not performed;
- wherein the optical compensation compensates deviation from standard target values of luminance, a color coordinate, and a gamma curve corresponding to the sample gray value for the displayed image on the display panel.
A gamma correction system for a display device comprising:
- a display panel configured to display an image;
- a measuring unit configured to acquire optical characteristic information from the image displayed on the display panel;
- and
- a display panel driver configured to convert a gamma data result value obtained after performing optical compensation for at least two sample gray values among a plurality of reference luminance values into a corresponding data voltage and calculate a data voltage for the rest of the luminance values for which optical compensation is not performed;
- wherein the display panel driver includes:
- a reference luminance value selector configured to select the plurality of reference luminance values,
- a luminance compensator configured to perform optical compensation for the sample gray values to acquire gamma data result values, and
- a gamma value converter configured to convert the gamma data result values to a corresponding data voltage and calculate a data voltage for the rest of the luminance values.
A gamma correction method for a display device for correcting an optical characteristic of image data provided to a display panel displaying an image, the method comprising:
- selecting a plurality of reference luminance values;
- performing optical compensation for at least two sample gray values among the plurality of reference luminance values;
- acquiring a gamma data result value corresponding to a sample gray value after the optical compensation to convert the gamma data result value into a corresponding data voltage;
- calculating a data voltage for the rest of the luminance values for which the optical compensation is not performed by using the data voltage of the sample gray value;
- and
- performing gamma compensation of video data applied to the display panel by using the data voltage for the luminance.
A gamma correction method for a display device for correcting an optical characteristic of image data provided to a display panel displaying an image, the method comprising:
- selecting a plurality of reference luminance values;
- performing optical compensation for at least two sample gray values among the plurality of reference luminance values;
- obtaining a gamma data compensation value for the rest of the luminance values by using the gamma data result value for the sample gray value calculated after the optical compensation and an offset value acquired from the optical compensation;
- acquiring the gamma data result value for the sample gray value and gamma data compensation values for the rest of the luminance values and then converting the gamma data compensation values into data voltage;
- and
- performing gamma compensation of image data applied to the display panel by using the data voltage.
Dependencies are inferred from the claim text.