公开(公告)号：US11735087B2

公开(公告)日：2023-08-22

申请号：US17903723

申请日：2022-09-06

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

Inventor： Yuheng Zhang

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0272 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0247

Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a driving module, and the driving module includes a driving transistor. A time period of one frame of the display panel includes a non-light-emitting stage and a light-emitting stage, and the non-light-emitting stage includes a bias adjustment stage, in which one of a source and a drain of the driving transistor receives a bias adjustment signal. An operating state of the pixel circuit includes a first mode and a second mode, a time length of the non-light-emitting stage in the first mode is L1, and a time length of the non-light-emitting stage in the second mode is L2, where L1>L2. A working process of the display panel in the first mode includes a first frame, and a working process of the display panel in the second mode includes a second frame.

公开(公告)号：US20230222979A1

公开(公告)日：2023-07-13

申请号：US18183112

申请日：2023-03-13

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

Inventor： Qingjun LAI ,  Yihua ZHU ,  Jinjin YANG ,  Ping AN

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2320/0233 ,  G09G2310/061 ,  G09G2330/021

Abstract: Disclosed are a display panel and a display device. The display panel includes a pixel circuit and a light-emitting element, in the pixel circuit, the drive device includes a drive transistor; the reset device includes a first double-gate transistor, and a connection node between the first sub-transistor and the second sub-transistor is a second node. The pixel circuit is connected to a first power supply voltage signal terminal, and is configured to receive a first power supply voltage signal, and the first power supply voltage signal is a constant high level signal; and the pixel circuit includes a first capacitor, a first pole plate of the first capacitor is connected to the first power supply voltage signal terminal, and a second pole plate of the first capacitor is connected to the second node.

公开(公告)号：US20230213795A1

公开(公告)日：2023-07-06

申请号：US17673380

申请日：2022-02-16

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

Inventor： Wenqi ZHOU ,  Yan YANG ,  Ting ZHOU ,  Junyi LI

IPC: G02F1/13 ,  G02F1/1335

CPC classification number: G02F1/1323 ,  G02F1/133512 ,  G02F1/133514

Abstract: A display panel and a display apparatus are provided in the present disclosure. The display panel includes a plurality of pixel units. At least one pixel unit includes a display region and an anti-peep region. The anti-peep region includes a first light-blocking layer and a second light-blocking layer; and along a direction perpendicular to the light-exiting surface of the display panel, a distance between the first light-blocking layer and the second light-blocking layer is greater than zero. The first light-blocking layer includes at least one first light-blocking strip and at least one first opening. The second light-blocking layer includes at least one second light-blocking strip and at least one second opening. A vertical projection of a first or second opening on the light-exiting surface of the display panel is within a vertical projection of a corresponding first or second light-blocking strip on the light-exiting surface of the display panel.

公开(公告)号：US20230206876A1

公开(公告)日：2023-06-29

申请号：US18110904

申请日：2023-02-17

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

Inventor： Huomei HUA ,  Rong CHEN ,  Guochang LAI

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3677 ,  G09G2310/0278 ,  G09G2310/0272

Abstract: A driving method includes driving a display panel at a first-frequency driving mode and a second-frequency driving mode. A first frequency of the first-frequency driving mode is lower than a second frequency of the second-frequency driving mode. In the first-frequency driving mode, a frame time includes a scanning section and a corresponding front and rear porch section immediately following the scanning section. The driving method further includes scanning sub-pixels of the display panel in the scanning section of the first-frequency driving mode, where in the front and rear porch section, the sub-pixels of the display panel are not scanned, and front and rear porch sections corresponding to at least part of a plurality of frames in the first-frequency driving mode include at least one compensation section. The method further includes providing a data signal to each data line of a plurality of data lines of the display panel in a compensation section of the at least one compensation section.

公开(公告)号：US20230112516A1

公开(公告)日：2023-04-13

申请号：US17052529

申请日：2019-11-18

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

Inventor： Zongjun ZOU ,  Ying SUN ,  Yumin XU

IPC: G06F3/041 ,  H01L27/12 ,  G06F3/044

Abstract: The array substrate at least includes a plurality of electrode rows, a plurality of switch control lines and a plurality of switch units in a display area; each electrode row corresponds to at least one switch control line, each first electrode corresponds to one switch unit, and each switch unit includes at least one first switch; and in one of the electrode rows: the control terminal of at least one first switch in each switch unit in the one electrode row is connected to the same switch control line, the first poles of the first switches connected to the same switch control line are electrically connected to the first electrodes respectively, and the second poles of the first switches connected to the same switch control line are electrically connected to one another.

公开(公告)号：US11623304B2

公开(公告)日：2023-04-11

申请号：US16544419

申请日：2019-08-19

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

Inventor： Jiansong Kang ,  Ping-Chung Yen ,  Jianan Wang ,  Tian Luo ,  Tsung-Han Tsai

IPC: B23K26/38 ,  B23K101/36

Abstract: Irregularly-shaped display panel and cutting method are provided. The display panel includes a display region and a non-display region surrounding the display region. The non-display region includes at least one irregularly-shaped boundary. The irregularly-shaped display panel further includes a substrate and the substrate includes a base substrate. The non-display region includes laser cutting trajectories. An orthographic projection of each of the laser cutting trajectories to the base substrate at least partially overlaps an orthographic projection of a corresponding irregularly-shaped boundary. Each of the laser cutting trajectories includes a cutting entry point and a cutting exit point at two ends thereof, and at least one of the cutting entry point and the cutting exit point does not overlap the orthographic projection of the corresponding irregularly-shaped boundary. The laser cutting trajectories are used as a laser cutting path.

公开(公告)号：US20230102643A1

公开(公告)日：2023-03-30

申请号：US17994581

申请日：2022-11-28

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

Inventor： Yong YUAN

IPC: G09G3/32

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, a compensation module and a reset module. The drive module includes a drive transistor. The data write module is connected between a data signal input terminal and a source of the drive transistor. The compensation module is connected between a gate of the drive transistor and the drain of the drive transistor. The rest module is connected between a reset signal terminal and the drain of the drive transistor. The reset module also serves as a bias module. An operation of the pixel circuit includes a reset stage and a bias stage, during the reset stage, the reset module and the compensation module are on.

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：US20230093236A1

公开(公告)日：2023-03-23

申请号：US17994627

申请日：2022-11-28

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

Inventor： Yong YUAN

IPC: G09G3/32

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 drive module and a data write module. The drive module is configured to provide a drive current for the light-emitting element and comprises a drive transistor. An operation of the pixel circuit includes a bias stage, in the bias stage, the data write module and the drive module are on, a compensation module is off, a data signal provides a bias signal for a drain of the drive transistor to adjust a bias state of the drive transistor.

公开(公告)号：US20230089780A1

公开(公告)日：2023-03-23

申请号：US18071449

申请日：2022-11-29

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

Inventor： Jieliang LI ,  Jiaxian LIU

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3233

Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data-writing module, a driving module, and a compensation module. The driving module is configured to provide a driving current for the light-emitting element, wherein the driving module includes a driving transistor, and the driving transistor is an NMOS transistor. The data-writing module is configured to selectively provide a data signal for the driving module. The compensation module is configured to compensate a threshold voltage of the driving transistor. An operational process of the pixel circuit includes a bias stage. In the bias stage, the compensation module is turned off, the driving transistor receives a bias signal, and the bias signal is configured to adjust a bias state of the driving transistor.