US 12,254,802 B2
Light-emitting device driving circuit
Sheng-Bo Wang, Hsinchu (TW)
Assigned to GaNrich Semiconductor Corporation, Hsinchu (TW)
Filed by GaNrich Semiconductor Corporation, Hsinchu (TW)
Filed on Aug. 1, 2023, as Appl. No. 18/228,772.
Prior Publication US 2024/0046831 A1, Feb. 8, 2024
Int. Cl. G09G 3/20 (2006.01); H05B 45/30 (2020.01); H05B 45/34 (2020.01); H05B 45/54 (2020.01); H05B 45/59 (2022.01)
CPC G09G 3/20 (2013.01) [G09G 2320/0247 (2013.01); G09G 2320/0626 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light-emitting device driving circuit, comprising:
a current source providing an input current;
a light-emitting device series; and
an input-side voltage-stabilizing circuit, electrically connected between the current source and the light-emitting device series to provide a driving current, wherein the input-side voltage-stabilizing circuit comprises:
a normally-on transistor;
a first resistor, electrically connected to the normally-on transistor; and
a compensation capacitor, electrically connected to the normally-on transistor and the light-emitting device series.