US 12,148,371 B2
Light-emitting driving circuit, backlight module and display panel
Bo Sun, Guangdong (CN)
Assigned to SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/623,119
Filed by SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Dec. 16, 2021, PCT No. PCT/CN2021/138876
§ 371(c)(1), (2) Date Dec. 27, 2021,
PCT Pub. No. WO2023/103015, PCT Pub. Date Jun. 15, 2023.
Claims priority of application No. 202111497201.3 (CN), filed on Dec. 9, 2021.
Prior Publication US 2024/0046863 A1, Feb. 8, 2024
Int. Cl. G09G 3/3233 (2016.01); G09G 3/34 (2006.01)
CPC G09G 3/3233 (2013.01) [G09G 3/3406 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0256 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0295 (2013.01); G09G 2320/045 (2013.01); G09G 2330/02 (2013.01); G09G 2330/10 (2013.01); G09G 2330/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light-emitting driving circuit, comprising:
a drive transistor, having a first electrode electrically connected to a first node, and a second electrode fed with a first power signal;
a data writing module, fed to a scan signal and a data signal, electrically connected to a gate of the drive transistor, and configured to write the data signal to the gate of the drive transistor under a control of the scan signal; and
a light-emitting module, including a plurality of first light emitting devices and a plurality of second light emitting devices, wherein a portion of the plurality of the first emitting devices are connected in series and at least one of the plurality of the first emitting devices are connected in parallel with the series-connected portion of the plurality of the first emitting devices; a portion of the plurality of the second emitting devices are connected in series and at least one of the plurality of the second emitting devices are connected in parallel with the series-connected portion of the plurality of the first emitting devices; and an anode of the at least one first light-emitting device and a cathode of the at least one second light-emitting device are both electrically connected to the first node, and the cathode of the at least one first light-emitting device and the anode of the at least one second light-emitting device are fed with a second power signal;
wherein the first power signal and the second power signal are configured to perform level conversion according to a preset period, so that a direction of a current flowing through the drive transistor is changed according to the preset period.