Patent ID: 11862087
Assignee: WUHAN TIANMA MICROELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A display device comprising:
a plurality of pixels; and
a control circuit configured to control brightness of the plurality of pixels,
wherein each of the plurality of pixels includes:
a light-emitting element; and
a pixel circuit configured to control light emission of the light-emitting element,

wherein the pixel circuit includes:
a driving transistor configured to supply electric current to the light-emitting element;
a switching transistor having a source and a drain connected between a gate and a drain of the driving transistor; and
a storage capacitor configured to store voltage to control the electric current to be supplied by the driving transistor to the light-emitting element,

wherein the control circuit is configured to:
determine a statistic of brightness of pixels specified by one or more video frames with a predetermined method;
determine a length of a threshold compensation period for which the storage capacitor applies threshold compensation to the driving transistor based on the statistic; and
control an ON period of the switching transistor to control the threshold compensation period in such a manner that the threshold compensation period in a brightness range higher than a predetermined value is shorter than the threshold compensation period in a brightness range no higher than the predetermined value.