Display device with built-in sensor
OwnerHirotaka Hayashi, Takashi Nakamurainventors
Life of this patent
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Abstract
A drive circuit that can cover a possible dispersion in characteristics among optical sensors is constructed in order to obtain a stable sensor output. The device includes an optical sensor provided in each of pixels arranged in lines in vertical and horizontal directions, a circuit that instructs a timing of precharge for the optical sensor, and a circuit that instruct a timing for outputting data of the optical sensor from a respective pixel. The device further comprises means that changes the timing for precharge and the timing for outputting the data each to an arbitrary interval.
Claims10
A display device with a built-in sensor, comprising:
- an optical sensor provided in each of pixels arranged in lines in vertical and horizontal directions;
- a circuit that instructs a timing of precharge for the optical sensor;
- and
- a circuit that instruct a timing for outputting data of the optical sensor from a respective pixel;
- wherein the device further comprises means that changes the timing for precharge and the timing for outputting the data each to an arbitrary interval.
A display device with a built-in sensor, comprising:
- a plurality of pixel circuits arranged in matrix on an array substrate;
- a plurality of sensor circuits arranged in matrix on the array substrate at a ratio of one sensor circuit to a predetermined number of those of the plurality of pixel circuits;
- a plurality of signal lines that form a plurality of columns on the array substrate, to charge a display signal to each of the plurality of pixel circuits;
- a plurality of scanning lines that form a plurality of rows on the array substrate, to serially select lines of the plurality of pixel circuits;
- a plurality of precharge control signal lines that serially turn on the plurality of sensor circuits in unit of row, to precharge a capacitor of each of the plurality of sensor circuits;
- a plurality of output control signal lines that serially turn on output amplifiers of the plurality of sensor circuits in unit of row, to detect a voltage of the capacitor of each of the plurality of sensor circuits;
- and
- a precharge control circuit and sensor output control circuit connected independently to the precharge control signal lines and output control signal lines, that sets a start timing for each respective line independently.
Dependencies are inferred from the claim text.