公开(公告)号：US10769992B2

公开(公告)日：2020-09-08

申请号：US15591906

申请日：2017-05-10

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Yue Li ,  Dongxu Xiang ,  Gang Liu

IPC: G09G3/3233

Abstract: The present application discloses a display panel and a display device. The display panel comprises a plurality of data signal lines; a plurality of scan signal lines intersecting with the plurality of data signal lines, to define a plurality of sub-pixels in an array, and each of the sub-pixels comprising a pixel driving circuit, and an external compensation circuit, comprising a power supply unit, a sampling unit and a data signal generation unit, being connected to the data signal lines, and transmitting a compensated data signal via the data signal lines to the pixel driving circuits. In the present implementation, voltage compensation is performed by the external compensation circuit on the driving transistor and the organic light emitting diode in the pixel driving circuit, to improve the driving capability of the pixel driving circuit and increases the display precision of the display panel.

公开(公告)号：US10672345B2

公开(公告)日：2020-06-02

申请号：US15593734

申请日：2017-05-12

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Dongxu Xiang ,  Yue Li ,  Renyuan Zhu ,  Gang Liu

IPC: G09G3/3291 ,  G09G3/3233

Abstract: The present disclosure discloses an organic light emitting display panel, a driving method thereof, and an organic light emitting display apparatus. The organic light emitting display panel includes a plurality of pixel driving circuits, the pixel driving circuit comprising: a driving module including a driving transistor and a first capacitor; an initialization module for writing signals of a first initialization signal terminal and a second initialization signal terminal respectively to a gate and a first electrode of the driving transistor; a data writing module; a light emitting control module including a first transistor, a gate, a first electrode and a second electrode of the first transistor respectively connecting to a light emitting signal terminal, a second electrode plate of the first capacitor and the gate of the driving transistor; an organic light emitting diode, a cathode of the organic light emitting diode connecting to a second voltage terminal.

公开(公告)号：US10600361B2

公开(公告)日：2020-03-24

申请号：US15353286

申请日：2016-11-16

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  Tianma Micro-electronics Co., Ltd.

Inventor： Dong Qian ,  Zeyuan Chen ,  Wenhui Zou ,  Dongxu Xiang ,  Gang Liu

IPC: G09G3/3233

Abstract: A display panel and a threshold detection method are provided. The display panel includes a plurality of data signal lines configured to transmit data signals, a plurality of scanning lines configured to transmit driving signals, a plurality of reference voltage signal lines configured to transmit reference voltage signals, and a plurality of pixels enclosed and defined by the mutually insulated data signal lines and scanning lines. A pixel driving circuit is disposed in each pixel, and each pixel driving circuit corresponds to one data signal line and one reference voltage signal line. The pixel driving circuits are arranged in a plurality of rows.

公开(公告)号：US10102799B2

公开(公告)日：2018-10-16

申请号：US15356902

申请日：2016-11-21

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  Tianma Micro-electronics Co., Ltd.

Inventor： Tong Wu ,  Wenhui Zou ,  Dong Qian ,  Yue Li ,  Gang Liu ,  Dongxu Xiang ,  Renyuan Zhu

IPC: G09G3/3225

Abstract: The description provides an organic light emitting display panel and a driving method thereof, characterized in that the organic light emitting display panel is divided into a display area and a non-display area, and the non-display area surrounds the display area; the display area includes a plurality of rows of pixel units, and each row of pixel units include a plurality of pixel circuits; a plurality of driving circuit units located in the non-display area; and any one of the driving circuit units is electrically connected to more than two rows of the pixel units simultaneously. Using the organic light emitting display panel and the driving method thereof provided by at least one embodiment of the invention can be more advantageous to narrow borders on the basis of ensuring resolution and avoiding abnormal display of images.

公开(公告)号：US09966002B2

公开(公告)日：2018-05-08

申请号：US15348214

申请日：2016-11-10

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  Tianma Micro-electronics Co., Ltd.

Inventor： Dongxu Xiang ,  Yue Li ,  Dong Qian ,  Renyuan Zhu ,  Tong Wu ,  Gang Liu

IPC: G09G3/30 ,  G09G3/3208 ,  G09G3/20 ,  G09G3/00

CPC classification number: G09G3/3233 ,  G09G2310/066 ,  G09G2320/0209 ,  G09G2320/0295 ,  G09G2320/043

Abstract: A display panel and a display panel compensation method are provided. The display panel comprises at least one pixel compensation circuit including a voltage adjustment module, a conversion module, a first memory module, and a comparison module; and a plurality of pixel driving circuits each including a data input module, a driving module, a second memory module, a sensing module, and a light-emitting element. The pixel compensation circuit compensates a threshold voltage shift of the pixel driving circuit. The voltage adjustment module has an input terminal connected to a first power supply, and an output terminal connected to an input terminal of the data input module. The data input module has an output terminal connected to a controlling terminal of the driving module, and a controlling terminal connected to a first scanning signal line. The driving module has an output terminal connected to an input terminal of the sensing module.

公开(公告)号：US20180012546A1

公开(公告)日：2018-01-11

申请号：US15715094

申请日：2017-09-25

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Yue LI ,  Gang Liu

IPC: G09G3/3233 ,  G09G3/3258

CPC classification number: G09G3/3233 ,  G09G3/3258 ,  G09G2300/043 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2310/0202 ,  G09G2310/0248 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2330/021

Abstract: The present application discloses an organic light-emitting display panel and a driving method thereof, as well as an organic light-emitting display device. A specific implementation of the organic light-emitting display panel comprises: an array arrangement comprising a plurality of pixel units, a plurality of data lines and a plurality of reference signal lines, wherein each pixel unit comprises a first subpixel, a second subpixel and a third subpixel, and a color of the first subpixel, a color the second subpixel and a color of the third subpixel differ from one another; a pixel driving circuit is formed in each subpixel, and comprises a driving transistor and an organic light-emitting diode; and the first subpixel, the second subpixel and the third subpixel of an identical pixel unit are electrically connected with a given reference signal line.

公开(公告)号：US20170249903A1

公开(公告)日：2017-08-31

申请号：US15593929

申请日：2017-05-12

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD

Inventor： Dongxu XIANG ,  Yue Li ,  Tong Wu ,  Zeyuan Chen ,  Gang Liu ,  Dong Qian

IPC: G09G3/3258 ,  G09G3/3266

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0871 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045

Abstract: The present disclosure discloses an organic light emitting display panel, a driving method thereof, and an organic light emitting display apparatus. The organic light emitting display panel includes a plurality of pixel driving circuits, comprising: a driving module including a driving transistor and a first capacitor; an initialization module for initializing potentials of a gate and a first electrode of the driving transistor at least under the control of a first scanning signal terminal; a data writing module for transmitting a signal of a data signal terminal to a second electrode plate of a first capacitor under the control of the first or a second scanning signal terminal; a light emitting control module for transmitting a potential signal of the first electrode of the driving transistor to the second electrode plate of the first capacitor and driving an organic light emitting diode to emit light.

公开(公告)号：US20170206839A1

公开(公告)日：2017-07-20

申请号：US15473490

申请日：2017-03-29

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  Tianma Micro-Electronics Co., Ltd.

Inventor： Tong Wu ,  Yue Li ,  Dongxu Xiang ,  Gang Liu

IPC: G09G3/3258

CPC classification number: G09G3/3233 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045

Abstract: This application discloses an organic light emitting pixel compensation circuit, an organic light emitting display panel, and a driving method. A specific embodiment of the organic light emitting pixel compensation circuit comprises an external compensation module, the external compensation module comprising a data line, a reference voltage line, a reset control line, a first detection control line, a second detection control line, a first input/output terminal, a second input/output terminal, a reset unit, a threshold voltage detection unit, a deterioration voltage detection unit, a data processing unit, and an adder unit. In the embodiment, the deterioration compensation for a light emitting element is achieved by detecting and processing an anode voltage at the second input/output terminal to obtain a compensated voltage, and feeding the compensated data voltage back to a gate of a driving transistor via the data line.

公开(公告)号：US10339858B2

公开(公告)日：2019-07-02

申请号：US15619554

申请日：2017-06-12

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Yue Li ,  Gang Liu

IPC: G09G3/3216 ,  G09G3/3233 ,  G09G3/325 ,  H01L27/28 ,  H01L27/32

Abstract: A pixel circuit, a drive method, a display panel and a display device are provided. A switch transistor is arranged between a first power supply signal and an input terminal (a source) of a drive transistor. When a drive circuit is at a second detection period during which drive current of a light emitting element is detected, the switch transistor is controlled to be turned off, such that the first power supply signal is disconnected from the source of the drive transistor. In this case, no current flows through the light emitting element, and therefore the light emitting element does not emit light, thereby solving a problem in the conventional technology that the light emitting element is lighted and it is not dark in a dark state when drive current of the pixel circuit is detected.

公开(公告)号：US10325555B2

公开(公告)日：2019-06-18

申请号：US15473490

申请日：2017-03-29

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  Tianma Micro-Electronics Co., Ltd.

Inventor： Tong Wu ,  Yue Li ,  Dongxu Xiang ,  Gang Liu

IPC: G09G3/3233

Abstract: An organic light emitting pixel compensation circuit, an organic light emitting display panel, and a driving method are provided. The organic light emitting pixel compensation circuit includes an external compensation module, which has a data line, a reference voltage line, a reset control line, a first detection control line, a second detection control line, a first input/output terminal, a second input/output terminal, a reset unit, a threshold voltage detection unit, a deterioration voltage detection unit, a data processing unit, and an adder unit. The deterioration compensation for a light emitting element is achieved by detecting and processing an anode voltage at the second input/output terminal to obtain a compensated voltage, and feeding the compensated data voltage back to a gate of a driving transistor via the data line.