US 12,242,693 B2
Display device, driving method thereof, and active stylus thereof
Yitong Liu, Hubei (CN); Houfu Gong, Hubei (CN); and Zengjian Jin, Hubei (CN)
Assigned to Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Wuhan (CN)
Appl. No. 17/796,286
Filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Hubei (CN)
PCT Filed Jun. 7, 2022, PCT No. PCT/CN2022/097466
§ 371(c)(1), (2) Date Jul. 29, 2022,
PCT Pub. No. WO2023/231057, PCT Pub. Date Dec. 7, 2023.
Claims priority of application No. 202210596436.6 (CN), filed on May 30, 2022.
Prior Publication US 2024/0184400 A1, Jun. 6, 2024
Int. Cl. G06F 3/041 (2006.01)
CPC G06F 3/0418 (2013.01) [G06F 3/0414 (2013.01); G06F 3/04162 (2019.05)] 20 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel comprising a first frequency and a second frequency, wherein the first frequency is greater than the second frequency, and a display time of a frame corresponding to the second frequency comprises a first time section, a second time section, and a third time section in a sequence; and
a touch chip connected to the display panel, wherein the touch chip is configured to transmit an uplink signal to an active stylus in the first time section and in the third time section in a previous frame when the display panel is at the second frequency, and receive a downlink signal returned by the active stylus according to the uplink signal, and the downlink signal comprises first touch data and second touch data, and an anti-interference ability of the first touch data is lower than an anti-interference ability of the second touch data;
wherein the touch chip is configured to transmit display data in the second time section, receive the first touch data in the third time section, and drive the display panel according to the downlink signal.