公开(公告)号：WO2021133461A1

公开(公告)日：2021-07-01

申请号：PCT/US2020/057574

申请日：2020-10-27

Applicant: APPLE INC.

Inventor： LIN, Chin-Wei ,  ONO, Shinya ,  HUANG, Jung Yen

IPC: G09G3/3233 ,  H01L27/12 ,  G09G2300/0417 ,  G09G2300/0465 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0256 ,  G09G2320/0209 ,  G09G2320/0238 ,  G09G2320/0247 ,  G09G3/2092 ,  G09G3/3266 ,  G09G3/3291 ,  H01L27/1225 ,  H01L27/1251 ,  H01L27/1255

Abstract: A display pixel may include an organic light-emitting diode, one or more emission transistors, a drive transistor, a gate setting transistor, a data loading transistor, and an initialization transistor. The drive transistor may be implemented as a semiconducting-oxide transistor to mitigate threshold voltage hysteresis to improve first frame response at high refresh rates, to reduce undesired luminance jumps at low refresh rates, and to reduce image sticking. The gate setting transistor may also be implemented as a semiconducting-oxide transistor to reduce leakage at the gate terminal of the drive transistor. The initialization transistor may also be implemented as a semiconducting-oxide transistor so that it can be controlled using a shared emission signal to reduce routing complexity. The remaining transistors in the pixel may be implemented as p-type silicon transistors. Display pixels configured in this way can support in-pixel threshold voltage compensation and on-bias stress phase to further mitigate the hysteresis.

公开(公告)号：WO2021128470A1

公开(公告)日：2021-07-01

申请号：PCT/CN2020/070673

申请日：2020-01-07

Applicant: 深圳市华星光电半导体显示技术有限公司

Inventor： 刘启坤 ,  郑介鑫

IPC: G09G3/3225 ,  G09G2320/0238

Abstract: 本发明提供一种像素驱动电路及其驱动方法、显示面板，所述像素驱动电路包括第一晶体管(T1)、第二晶体管(T2)、第三晶体管(T3)、第一存储电容(Cst1)、第二存储电容(Cst2)以及有机发光元件(OLED)。通过合理设计两个电容的容值，对第一晶体管(T1)的栅极电压进行分压处理，即使T1的阈值电压严重负漂，也能够保证黑画面的实现，提升显示面板的对比度。

公开(公告)号：WO2022240777A1

公开(公告)日：2022-11-17

申请号：PCT/US2022/028394

申请日：2022-05-09

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： KIM, Cheonhong ,  CHOI, Min Hyuk ,  QIAO, Wenhao

IPC: G09G3/32 ,  G09G3/3233 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0272 ,  G09G2320/0238 ,  G09G2320/0252 ,  G09G3/3291

Abstract: Embodiments relate to a display device with reduced scanning time by using a reference line separate from a data line to improve frame rate of the display device. A first pixel in a first row samples a reference voltage during a first period and samples a data voltage during a second period. A second pixel in a second row adjacent to the first row samples the reference voltage during a third period and samples the data voltage during a fourth period, where the third period overlaps with at least a portion of the second period. The reference voltage is provided by the reference line that is connected to a reference buffer, and the data voltage is provided by the data line connected to a source driver circuit.