公开(公告)号：US11222581B2

公开(公告)日：2022-01-11

申请号：US16442812

申请日：2019-06-17

Applicant: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Yong Yuan ,  Yuheng Zhang ,  Wanming Huang ,  Jieliang Li

IPC: G09G3/32

Abstract: A pixel circuit, a method for driving a pixel circuit and a display panel are provided. An exemplary pixel circuit includes a data writing module and a driving transistor, a voltage of a first terminal of the driving transistor being greater than a voltage of a second terminal; a light-emitting control module and a light-emitting device, the light-emitting device being configured to emit light in response to the driving current generated by the driving transistor; a first initialization module and a second initialization module; and a reset module configured to cause the voltage of the second terminal of the driving transistor to be greater than or equal to the voltage of the first terminal of the driving transistor in response to a current-stage reset signal, an enable signal of the current-stage reset signal appearing after an enable signal of the current-stage light-emitting signal.

公开(公告)号：US20210407419A1

公开(公告)日：2021-12-30

申请号：US17017587

申请日：2020-09-10

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang Li ,  Yong Yuan ,  Wanming Huang

IPC: G09G3/3258 ,  G09G3/3233

Abstract: A display device includes a pixel driving circuit and a light-emitting element. The pixel driving circuit includes an initialization signal terminal, a data signal terminal, a first initialization unit, a driving module and a first light-emitting control unit. The first initialization unit is electrically connected between the initialization signal terminal and an anode of the light-emitting element. In a write frame, the first initialization unit is configured to, under control of a first scan signal, provide the anode of the light-emitting element with a first initialization voltage signal Vref1. In a maintenance frame, the first initialization unit is configured to, under the control of the first scan signal, provide the anode of the light-emitting element with a second initialization voltage signal Vref2 which is different from the first initialization voltage signal Vref1.

公开(公告)号：US11282461B2

公开(公告)日：2022-03-22

申请号：US17017587

申请日：2020-09-10

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang Li ,  Yong Yuan ,  Wanming Huang

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266

Abstract: A display device includes a pixel driving circuit and a light-emitting element. The pixel driving circuit includes an initialization signal terminal, a data signal terminal, a first initialization unit, a driving module and a first light-emitting control unit. The first initialization unit is electrically connected between the initialization signal terminal and an anode of the light-emitting element. In a write frame, the first initialization unit is configured to, under control of a first scan signal, provide the anode of the light-emitting element with a first initialization voltage signal Vref1. In a maintenance frame, the first initialization unit is configured to, under the control of the first scan signal, provide the anode of the light-emitting element with a second initialization voltage signal Vref2 which is different from the first initialization voltage signal Vref1.

公开(公告)号：US11004385B1

公开(公告)日：2021-05-11

申请号：US17012388

申请日：2020-09-04

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang Li ,  Yong Yuan ,  Wanming Huang

IPC: G09G3/32

Abstract: Disclosed are a display panel, a driving method and a display device. The display panel includes a strobe circuit, a pixel driving circuit and a light-emitting element; the pixel driving circuit includes a first initialization unit, a driving module, and a first light-emitting control unit; the strobe circuit is electrically connected to an initialization signal end; and the first initialization unit is electrically connected between the initialization signal end and an anode of the light-emitting element; in a write frame, the first initialization unit is configured to provide a first initialization voltage signal Vref1 to the anode of the light-emitting element under the control of a first scan signal; and in a hold frame, the first initialization unit is configured to provide a second initialization voltage signal Vref2 to the anode of the light-emitting element under the control of the first scan signal.

公开(公告)号：US10997916B2

公开(公告)日：2021-05-04

申请号：US16718834

申请日：2019-12-18

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Yuheng Zhang ,  Yong Yuan ,  Jieliang Li ,  Wanming Huang ,  Yingteng Zhai

IPC: G09G3/3233 ,  G09G3/32

Abstract: Driving method for driving circuit, display panel, and display device are provided. The method includes: in a data writing stage, transmitting data signal voltage to a gate electrode of the driving transistor in response to a scan signal in a first scan signal line; in a light-emitting stage, turning on a driving path connecting the driving transistor to the light-emitting device, and making the driving transistor generate a driving current based on the voltage of the gate electrode in the driving transistor to drive the light-emitting device to emit light, in response to a light-emitting signal in a light-emitting signal line; and in a compensation stage, compensating the voltage of the gate electrode in the driving transistor by using a first power signal voltage. The light-emitting stage and the compensation stage overlap with each other, and a starting time of the compensation stage is after a starting time of the light-emitting stage.