US 12,334,012 B2
Display device with consistent luminance at different refresh rates
Sangmoo Choi, Mountain View, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Appl. No. 18/282,400
Filed by Google LLC, Mountain View, CA (US)
PCT Filed Dec. 6, 2021, PCT No. PCT/US2021/062000
§ 371(c)(1), (2) Date Sep. 15, 2023,
PCT Pub. No. WO2023/075808, PCT Pub. Date May 4, 2023.
Claims priority of provisional application 63/273,427, filed on Oct. 29, 2021.
Prior Publication US 2024/0127751 A1, Apr. 18, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0247 (2013.01); G09G 2330/021 (2013.01); G09G 2340/0435 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A pixel circuit, including:
an LED with an anode terminal and a cathode terminal;
a driving transistor including a drain terminal, the drain terminal of the driving transistor being connected to the anode terminal of the LED to supply power to the LED;
a second transistor that is connected between an initialization voltage line that specifies an initialization voltage and the anode terminal of the LED, the second transistor having a gate terminal that is connected to a scan line; and
a third transistor that is connected between the initialization voltage line and the anode terminal of the LED in series with the second transistor, the third transistor having a gate terminal that is connected to a reset line,
wherein the pixel circuit is configured so that activating the scan line at a first frequency and activating the reset line at a second frequency that is half the first frequency causes the pixel circuit to initialize the LED based on the initialization voltage every other time the scan line is activated.