US 11,893,948 B2
Display device
Chen Chen, Shenzhen (CN); Fei Hu, Shenzhen (CN); Xin Yu, Shenzhen (CN); Zuqiang Guo, Shenzhen (CN); and Yi Li, Shenzhen (CN)
Assigned to APPOTRONICS CORPORATION LIMITED, Guangdong (CN)
Filed by APPOTRONICS CORPORATION LIMITED, Guangdong (CN)
Filed on Jan. 19, 2022, as Appl. No. 17/578,841.
Application 17/578,841 is a continuation of application No. PCT/CN2020/102701, filed on Jul. 17, 2020.
Claims priority of application No. 201910656741.8 (CN), filed on Jul. 19, 2019.
Prior Publication US 2022/0180827 A1, Jun. 9, 2022
Int. Cl. G09G 3/22 (2006.01); G09G 3/34 (2006.01)
CPC G09G 3/346 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/064 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display device, comprising:
a light source, configured to emit source light;
a control circuit, configured to control a drive current of the light source, wherein a modulation cycle of each frame of image to be displayed comprises a plurality of bit plane modulation periods and at least one pulse modulation period; and
a light modulation unit, configured to modulate the source light based on image data of the image to be displayed and light brightness of the light source, to obtain a modulated image;
wherein the drive current of the light source in each of the bit plane modulation periods is a rated operating current and the light brightness of the light source is L in periods other than the at least one pulse modulation period, and, in the at least one pulse modulation period, the drive current of the light source is an overshoot current higher than the rated operating current and the light brightness of the light source is M*L (M>1), such that average light brightness of the light source in the modulation cycle reaches a preset brightness.