US 12,361,867 B2
Micro display pixel driver controller
Jing Ju, Shanghai (CN); Hongyun Liu, Shanghai (CN); and Chunming Li, Shanghai (CN)
Assigned to JADE BIRD DISPLAY (SHANGHAI) LIMITED, Shanghai (CN)
Filed by JADE BIRD DISPLAY (SHANGHAI) LIMITED, Shanghai (CN)
Filed on Dec. 13, 2023, as Appl. No. 18/537,819.
Claims priority of application No. PCT/CN2022/139657 (WO), filed on Dec. 16, 2022.
Prior Publication US 2024/0203326 A1, Jun. 20, 2024
Int. Cl. G09G 3/32 (2016.01); G09G 3/20 (2006.01)
CPC G09G 3/32 (2013.01) [G09G 3/2018 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/027 (2013.01); G09G 2310/0272 (2013.01); G09G 2320/0626 (2013.01); G09G 2330/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A pixel driver controller, comprising:
a reference current source configured to supply a reference current;
a current mirror source, coupled to receive the reference current, configured to provide a mirror current having a current value equal to a current value of the reference current;
a first current switch coupled to the current mirror source to receive the mirror current, the first current switch being further coupled to a light emitting diode (LED) device to control flow of the mirror current to the LED device;
a pixel display data memory coupled to the first current switch and configured to store pixel display data;
a second current switch coupled to the first current switch;
a power source coupled to the reference current source, the current mirror source, and the second current switch; and
a controller coupled to the second switch and configured to control at least one of a global brightness or a gray scale level of the LED device by controlling a switch-on status of the second current switch.