Gamma Correction Circuit and Display Device Including Same
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Accused Products
Abstract
A display device includes a gamma correction circuit that includes a gamma correction data output circuit that outputs a plurality of gamma correction data that correspond with a detected temperature, a plurality of registers that input and hold each of a plurality of gamma correction data, and a plurality of D/A converters each of which converts the data of each of the plurality of registers into an analog voltage to output gamma-corrected set voltages, a display panel driver to which image data are input and which outputs applied voltages that have been corrected correspondingly with the image data via a plurality of gamma-corrected set voltages of the gamma correction circuit, a display panel which includes display elements to which the applied voltages from the display panel driver are applied, a nonvolatile memory which saves a plurality of gamma correction data, and a temperature sensor which generates an electrical signal that corresponds with a temperature.
32 Citations
24 Claims
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1-12. -12. (canceled)
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13. A gamma correction circuit which outputs a gamma-corrected set voltage to correct an image voltage in accordance with a nonlinear correlation between an applied voltage and a brightness of a display element, the gamma correction circuit comprising:
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a gamma correction data output circuit arranged to output a plurality of gamma correction data in accordance with a detected temperature;
a plurality of registers arranged to input and hold a plurality of gamma correction data; and
a plurality of D/A converters each of which is arranged to convert the data of each of the plurality of registers into an analog voltage and output a gamma-corrected set voltage. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification