Display driver and display device
AssigneeLapis Semiconductor Co., Ltd.
InventorKenichi SHIGETA
Life of this patent
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Abstract
A display driver according to the present invention generates a plurality of driving voltages based on a video signal and applies the respective driving voltages to a plurality of source lines of a display panel. The display driver includes an overdrive part and an overdrive control circuit. The overdrive part executes an overdrive processing to increase amplitudes of the driving voltages. The overdrive control circuit detects an internal temperature of the display driver and stops the overdrive processing by the overdrive part when the temperature is higher than a predetermined temperature threshold.
Claims9
A display driver that receives a video signal, generates a plurality of driving voltages based on the video signal, and applies the respective driving voltages to a plurality of source lines of a display panel, the display driver comprising:
- an overdrive part that performs an overdrive processing to increase respective amplitudes of the plurality of driving voltages;
- and
- an overdrive control circuit that detects an internal temperature of the display driver, and stops the overdrive processing by the overdrive part when the temperature is higher than a predetermined temperature threshold.
A display driver comprising:
- a timing control part that receives a video signal, generates a plurality of pixel data pieces that indicate luminance levels of respective pixels based on the video signal, and outputs a series of pixel data pieces in which performed an overdrive processing for increasing or decreasing the luminance levels indicated by the generated each of the pixel data pieces;
- and
- a driver IC that generates a plurality of driving voltages having respective voltage values corresponding to the luminance levels indicated by the respective pixel data pieces on the basis of the series of the pixel data pieces output from the timing control part and applies the plurality of driving voltages to a plurality of source lines of a display panel, wherein
- the driver IC includes an overdrive control circuit that detects an internal temperature of the driver IC and stops the overdrive processing by the timing control part when the temperature is higher than a predetermined temperature threshold.
A display device comprising:
- a display panel that includes a plurality of source lines on each of which a plurality of pixels is formed;
- a timing control part that receives a video signal, generates a plurality of pixel data pieces that indicate luminance levels of respective pixels on the basis of the video signal, and outputs a series of pixel data pieces in which performed an overdrive processing for increasing or decreasing the luminance levels indicated by the generated each of the pixel data pieces;
- and
- a driver IC that generates a plurality of driving voltages having respective voltage values corresponding to the luminance levels indicated by the respective pixel data pieces based on the series of the pixel data pieces output from the timing control part, and applies the plurality of driving voltages to the plurality of source lines of the display panel, wherein
- the driver IC includes an overdrive control circuit that detects an internal temperature of the driver IC and stops the overdrive processing by the timing control part when the temperature is higher than a predetermined temperature threshold.
Dependencies are inferred from the claim text.