Patent ID: 11922844
Assignee: NOVATEK MICROELECTRONICS CORP.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 16:
17. An operation method of an integrated driving device, wherein the integrated driving device comprises a touch sensing circuit, a display driving circuit and an optical sensing circuit, the optical sensing circuit comprises optical sensors, and the operation method comprises:
performing touch sensing by the touch sensing circuit in a plurality of touch sensing periods during a first frame period;
performing ambient light sensing by the optical sensors, which are used as ambient light sensors and fingerprint sensors at different times, embedded in a display panel during at least one ambient light sensing period during the first frame period to obtain optical sensing signals for generating first ambient light information;
performing fingerprint sensing by the optical sensors which are used as the fingerprint sensors during a second frame period, wherein the plurality of touch sensing periods and the at least one ambient light sensing period are non-overlapping;
outputting data voltages by the display driving circuit in a plurality of display periods in the first frame period, wherein the plurality of display periods, the plurality of touch sensing periods, and the at least one ambient light sensing period are non-overlapping;
outputting a plurality of first control signals and a plurality of second control signals by the optical sensing circuit to a control circuit in a touch display panel, wherein each of the plurality of first control signals is utilized for controlling when to reset all of sensor rows of a sensor region of an optical sensor array in the touch display panel at the same time and each of the plurality of second control signals is utilized for controlling when to read out the optical sensing signals from all of the sensor rows of the sensor region at the same time;
starting a first optical sensing cycle for generating the first ambient light information by the optical sensing circuit in the first frame period; and
starting a second optical sensing cycle for generating second ambient light information by the optical sensing circuit in the second frame period different from the first frame period, and wherein the first optical sensing cycle and the second optical sensing cycle are with respect to different sensor regions of the optical sensor array.