公开(公告)号：US20240055535A1

公开(公告)日：2024-02-15

申请号：US17598275

申请日：2021-08-06

Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Hong CHENG ,  Chao TIAN ,  Yanqing GUAN ,  Guanghui LIU

IPC: H01L29/786 ,  H01L29/423

CPC classification number: H01L29/78696 ,  H01L29/42384 ,  G02F1/1368

Abstract: A thin film transistor and a display panel are provided. A first dimension of a first transmission portion electrically connected to a source heavily-doped portion is different from a second dimension of a second transmission portion electrically connected to a drain heavily-doped portion, so that an intensity of an electric field of carriers transmitted by the transmission portion corresponding to the larger one of the first dimension or the second dimension is smaller when the thin film transistor is turned on, thereby reducing the bombardment effect of the carriers on a source or a drain and improving the stability of thin film transistor.

公开(公告)号：US20230309342A1

公开(公告)日：2023-09-28

申请号：US17771484

申请日：2022-04-13

Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Hong CHENG ,  Yanqing GUAN ,  Chao TIAN ,  Fei AI ,  Guanghui LIU

IPC: H01L27/32 ,  G09G3/32

CPC classification number: H01L27/3262 ,  G09G3/32 ,  H01L27/3265 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0233 ,  G09G2320/0242 ,  H01L27/1225

Abstract: A display panel, a pixel driving circuit, and a display device are provided. Driving transistors include a first transistor and a second transistor connected in parallel. An absolute value of a threshold voltage of the first transistor is greater than an absolute value of a threshold voltage of the second transistor. A carrier mobility of the first transistor is greater than a carrier mobility of the second transistor. A driving current is affected by characteristics of the second transistor and an increase speed is slowed down, which improves a problem of color unevenness of the display panel at low brightness.