Patent ID: 11869420
Assignee: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. A driving device for a display panel, comprising: a temperature sensor, a timing controller, and a source driving circuit; wherein
the temperature sensor is connected to the timing controller, and is configured to sense a target temperature and output the target temperature to the timing controller, the target temperature comprising an operating temperature of the display panel;
the timing controller is further connected to the source driving circuit, the source driving circuit is further connected to a pixel in the display panel, and the timing controller is configured to control, based on the target temperature, the source driving circuit to output a drive signal with a target parameter to the pixel to drive the pixel to emit light; wherein target temperatures within different temperature ranges correspond to drive signals with different target parameters; and
the timing controller is further configured to determine an operating duration of the display panel and control, based on the operating duration of the display panel and the target temperature, the source driving circuit to output the drive signal with the target parameter to the pixel; wherein operating durations within different duration ranges at a same target temperature correspond to drive signals with different target parameters;
wherein a second corresponding relationship among the temperature ranges, the duration ranges, and candidate parameters is stored in the timing controller; and
the timing controller is configured to: determine a target temperature range within which the target temperature falls and a target duration range within which the operating duration falls; and determine a candidate parameter corresponding to the target temperature range and the target duration range as the target parameter;
wherein the target parameter comprises a waveform of the drive signal; and the second corresponding relationship comprises a first temperature range, a second temperature range, a first duration range, a second duration range, and a candidate waveform of the drive signal corresponding to each of the temperature ranges and each of the duration ranges;
wherein the candidate waveform corresponding to the first temperature range and the first duration range is a negative bias pulse waveform; the candidate waveform corresponding to the first temperature range and the second duration range and the candidate waveform corresponding to the second temperature range and the first duration range are direct current waveforms; and the candidate waveform corresponding to the second temperature range and the second duration range is a positive bias pulse waveform;
wherein an upper limit of the first temperature range is less than a lower limit of the second temperature range, and an upper limit of the first duration range is less than a lower limit of the second duration range.