公开(公告)号：US11881155B2

公开(公告)日：2024-01-23

申请号：US17994526

申请日：2022-11-28

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

Inventor： Yong Yuan

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2320/0233 ,  G09G2320/045

Abstract: Provided are a display panel and a display device. The display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data write module, a drive module and a compensation module. The drive module includes a drive transistor; the data write module is connected to an input terminal of the drive module, a first electrode of the compensation module is connected to an output terminal of the drive module, and a second electrode of the compensation module is connected to a control terminal of the drive module. The data write module includes a data write transistor and a bias transistor, the data write transistor is connected to a data signal input terminal and configured to transmit a data signal, and the bias transistor is connected to a bias signal input terminal and configured to transmit a bias signal.

公开(公告)号：US11615729B2

公开(公告)日：2023-03-28

申请号：US17878213

申请日：2022-08-01

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

Inventor： Yong Yuan

IPC: G09G3/20 ,  G11C19/28

Abstract: Provided are a display panel and display device. The display panel includes a driver circuit, where the driver circuit includes an N-stage cascaded shift register which includes a first control unit, a second control unit, a third control unit, and a fourth control unit. The first control unit is configured to receive an input signal and control a signal of a first node in response to a first clock signal. The second control unit is configured to control a signal of a second node. The third control unit is configured to receive the first voltage signal and generate an output signal in response to a signal of a third node, or receive the second voltage signal and generate an output signal in response to the signal of the second node. The fourth control unit comprises a third transistor.

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：US20220059579A1

公开(公告)日：2022-02-24

申请号：US17517455

申请日：2021-11-02

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

Inventor： Guofeng Zhang ,  Yong Yuan

IPC: H01L27/12

Abstract: Provided are a display panel and a display device. The display panel includes a base substrate; a first transistor including a first active layer including silicon, a first gate, a first source and a first drain; a second transistor including a second active layer including an oxide semiconductor, a second gate located on a side of the second active layer facing away from the base substrate, a second source and a second drain; a first insulating layer including an inorganic material; and a planarization layer including an organic material. The first insulating layer includes a first insulating sublayer and a second insulating sublayer. The second insulating sublayer is located on a side of the first insulating sublayer facing away from the base substrate, and a compactness of the second insulating sublayer is greater than a compactness of the first insulating sublayer.

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.

公开(公告)号：US10181568B2

公开(公告)日：2019-01-15

申请号：US15618126

申请日：2017-06-09

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

Inventor： Hong Lin ,  Shui He ,  Yong Yuan

IPC: H01L27/14 ,  H01L51/00 ,  H01L27/32 ,  B32B27/06

Abstract: A flexible display panel and a display device are provided. The flexible display panel includes: a first flexible substrate, a second flexible substrate, and an inorganic layer located between the first flexible substrate and the second flexible substrate; where there are a plurality of grooves and/or through-holes in the inorganic layer; and the first flexible substrate contacts the second flexible substrate through the grooves and/or the through-holes. In this way, the grooves and/or the through-holes are arranged in the inorganic layer so that the first flexible substrate can contact with the second flexible substrate through the grooves and/or the through-holes to thereby increase the contact area between the second flexible substrate and the inorganic layer so as to alleviate the risk of the organic layer being stripped off the inorganic layer in the flexible display panel being bent and deformed.

公开(公告)号：US12218145B2

公开(公告)日：2025-02-04

申请号：US18384565

申请日：2023-10-27

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

Inventor： Qingjun Lai ,  Yihua Zhu ,  Yong Yuan ,  Ping An ,  Zhaokeng Cao

IPC: H01L27/12 ,  G09G3/3225 ,  H10K59/121

Abstract: A display panel includes a base substrate, a first transistor, and a second transistor. The first transistor and the second transistor are formed on the base substrate. The first transistor includes a first active layer, a first gate electrode, a first source electrode, and a first drain electrode. The first active layer includes silicon. The second transistor includes a second active layer, a second gate electrode, a second source electrode, and a second drain electrode. The second active layer includes oxide semiconductor. A length of a channel region of the first transistor is L1. Along a direction perpendicular to the base substrate, a distance between the first gate electrode and the first active layer is D1. A length of a channel region of the second transistor is L2. Along the direction perpendicular to the base substrate, a distance between the second gate electrode and the second active layer is D2.

公开(公告)号：US12094391B2

公开(公告)日：2024-09-17

申请号：US18344894

申请日：2023-06-30

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

Inventor： Qingjun Lai ,  Yihua Zhu ,  Yong Yuan

IPC: G09G3/20 ,  G09G3/3266 ,  G09G3/36 ,  G11C19/28

CPC classification number: G09G3/2092 ,  G09G3/20 ,  G09G3/3266 ,  G09G3/3674 ,  G09G2310/0286 ,  G09G2310/08 ,  G11C19/28

Abstract: Provided are a display panel and a display device. The display panel includes a driver circuit including N stages of cascaded shift registers, where N≥2. A shift register includes a first control part and a second control part. The second control part includes a first control unit and a second control unit. The first control unit is configured to receive at least a signal of a preset node and a first output control signal and control a signal of a fourth node. During at least part of a time period during which the signal of the fourth node is a low level signal, each of a signal of the preset node and the first output control signal is a low level signal.

公开(公告)号：US12080246B2

公开(公告)日：2024-09-03

申请号：US18198112

申请日：2023-05-16

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

Inventor： Qingjun Lai ,  Yihua Zhu ,  Yong Yuan ,  Ping An ,  Zhaokeng Cao

IPC: G09G3/3266 ,  G09G3/20 ,  G11C19/20 ,  G11C19/28 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/20 ,  G11C19/20 ,  G11C19/28 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0286 ,  G09G2310/061 ,  G09G2310/08

Abstract: A display panel includes a driving circuit. The driving circuit includes N levels of shift registers cascaded with each other, N≥2. A shift register of the N levels of the shift registers includes a third control unit and a fourth control unit. The third control unit is configured to receive the first voltage signal and a second voltage signal and control a signal of a fourth node in response to the signal of the second node and a signal of a third node. The first voltage signal is a high-level signal and the second voltage signal is a low-level signal. The fourth control unit is configured to receive a third voltage signal and a fourth voltage signal and generate an output signal in response to the signal of the first node and the signal of the fourth node and includes a first transistor and a second transistor.