公开(公告)号：US10083659B2

公开(公告)日：2018-09-25

申请号：US15629590

申请日：2017-06-21

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

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

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/32

CPC classification number: G09G3/3258 ,  G09G3/32 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/08 ,  G09G2320/0626

Abstract: The present application discloses an organic light emitting display panel, a driving method thereof and an organic light emitting display apparatus. The organic light emitting display panel comprises: a pixel array, comprising pixel regions in M rows and N columns; a plurality of pixel driving circuits each comprising a light emitting diode and a driving transistor for driving the light emitting diode, the light emitting diode being arranged in one of the pixel regions; and a plurality of pixel compensation circuits, each configured to provide a compensated light emitting control signal for a gate of the driving transistor to correct brightness of the light emitting diode in one of the plurality of pixel driving circuits. According to the present disclosure, the final light emitting current may be unrelated to the threshold voltage of the driving transistor, the carrier mobility and aging of the light emitting diode.

公开(公告)号：US20180144681A1

公开(公告)日：2018-05-24

申请号：US15862584

申请日：2018-01-04

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

Inventor： Dongxu Xiang ,  Yue Li ,  Zeyuan Chen ,  Renyuan Zhu ,  Yana Gao ,  Zhonglan Cai

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2320/0247 ,  G09G2320/045 ,  G09G2320/103 ,  G09G2330/021 ,  G09G2340/0414 ,  G09G2340/0435

Abstract: Disclosed are a drive method and a drive device for a display panel, a display panel and a display device. The method comprises: acquiring a picture to be displayed by a display panel; driving the display panel with a first picture refresh frequency to display the picture to be displayed if the number of successive frames of pictures same to the picture to be displayed exceeds a preset number; otherwise, driving the display panel with a second picture refresh frequency to display the picture to be displayed; and, the first picture refresh frequency is less than the second picture refresh frequency.

公开(公告)号：US10467965B2

公开(公告)日：2019-11-05

申请号：US15864731

申请日：2018-01-08

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

Inventor： Yue Li ,  Renyuan Zhu ,  Dongxu XiAng ,  Yana Gao ,  Zeyuan Chen ,  Zhonglan Cai

IPC: G09G3/3258 ,  H01L51/52 ,  G09G3/3233 ,  H01L27/32

Abstract: Disclosed are a pixel circuit and method for driving the same, an organic light emitting display panel and a display device. Prior to the data signal is written into the control electrode of the driving transistor, a unified common voltage signal is input to the first electrode of the driving transistor. The common voltage signal, along with a threshold voltage of the driving transistor, is written into the control electrode of the driving transistor. It can be ensured that each time the data signal is written to the control electrode of the driving transistor, voltages of the control electrode and the first electrode of the driving transistor can jump by a unified potential, so as to avoid the variation of the voltage change in the control electrode which came as a result of the parasitic capacitance between the control electrode and the first electrode of the driving transistor.

公开(公告)号：US10460673B2

公开(公告)日：2019-10-29

申请号：US15867507

申请日：2018-01-10

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

Inventor： Yana Gao ,  Dongxu Xiang ,  Renyuan Zhu ,  Yue Li ,  Zeyuan Chen ,  Zhonglan Cai

IPC: G09G3/3291 ,  H01L27/12 ,  H01L29/786

Abstract: The disclosure discloses a pixel circuit, a method for driving the same, and a display panel. Before a drive control module controls a drive transistor to drive a light emitting device to emit light, a node reset module provides a gate of the drive transistor with a signal of a first voltage terminal; and also while the node reset module is providing the gate of the drive transistor with the signal of the first voltage terminal, a light emitting control module provides a first electrode of the drive transistor with the signal of the first voltage terminal.

公开(公告)号：US10460658B2

公开(公告)日：2019-10-29

申请号：US15488962

申请日：2017-04-17

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

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

IPC: G09G3/3233

Abstract: An organic light-emitting display panel, a driving method and an organic light-emitting display device are provided. The organic light-emitting display panel includes a first pixel driving circuit, and a second pixel driving circuit disposed adjacent to the first pixel driving circuit along a row direction of a pixel matrix. The first pixel driving circuit is connected to a first scanning signal line, and the second pixel driving circuit is connected to a second scanning signal line. The first and the second pixel driving circuits share a same data line. The same data line is configured to time-sharingly provide an initialization signal to the first and the second pixel driving circuits, time-sharingly detect threshold voltages of driving transistors in the first and the second pixel driving circuits, and time-sharingly provide a compensated data signal to the first and the second pixel driving circuits.

公开(公告)号：US10276094B2

公开(公告)日：2019-04-30

申请号：US15464281

申请日：2017-03-20

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  TIANMA MICRO-ELECTRONICS CO., LTD.

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

IPC: G09G3/3233 ,  H01L27/32 ,  G09G3/3275 ,  G09G3/3258 ,  G09G3/3266 ,  G06F3/041 ,  H01L27/12 ,  H01L29/786

Abstract: A pixel driving circuit, a driving method and an organic light-emitting display panel are provided. The pixel driving circuit includes: a first transistor, a second transistor, a third transistor, a fourth transistor and a fifth transistor, a sixth transistor, a seventh transistor and an eighth transistors, and a capacitor. A first node is present between the fourth transistor and the fifth transistor. The seventh transistor is coupled between a reference voltage line and the first node, and the eighth transistor is coupled between the reference voltage line and an anode of the light-emitting element.

公开(公告)号：US10056034B2

公开(公告)日：2018-08-21

申请号：US15619510

申请日：2017-06-11

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

Inventor： Renyuan Zhu ,  Zeyuan Chen

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2320/0233 ,  G09G2320/045

Abstract: The present disclosure discloses an organic light-emitting pixel driving circuit, driving method and an organic light-emitting display panel. A driving transistor is to generate a driving current, a light-emitting element is to emit light; a first transistor is to transmit a first initialization voltage to the light-emitting element; a second transistor is to transmit a second initialization voltage to the driving transistor; a third transistor is to transmit a data signal voltage to the pixel driving circuit; a fourth transistor is to transmit a reference voltage to the driving circuit; a first capacitor is coupled in series between the output terminal of the third transistor and the driving transistor; a fifth transistor is to control the first capacitor; a sixth transistor is to control light emission of the light-emitting element; a second capacitor is to maintain the charge amount between the gate and source of the driving transistor.

公开(公告)号：US20180130420A1

公开(公告)日：2018-05-10

申请号：US15866235

申请日：2018-01-09

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

Inventor： Yana Gao ,  Dongxu Xiang ,  Renyuan Zhu ,  Yue Li ,  Zeyuan Chen ,  Zhonglan Cai

IPC: G09G3/3258 ,  H01L51/52

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2310/0264 ,  G09G2320/0233 ,  H01L51/5206

Abstract: The present disclosure discloses an electroluminescent display panel, a display device and a method for driving the same. The electroluminescent display panel includes a plurality of pixel circuits arranged in an array, wherein the plurality of pixel circuits each includes a node initialization module and an anode reset module; wherein a connection passage is arranged between every two adjacent pixel circuits of each column of the plurality of pixel circuits; and the connection passage is configured to provide a reference signal to either an anode reset module or a node initialization module of one of the every two adjacent pixel circuits.

公开(公告)号：US20170270853A1

公开(公告)日：2017-09-21

申请号：US15464281

申请日：2017-03-20

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  TIANMA MICRO-ELECTRONICS CO., LTD.

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

IPC: G09G3/3233 ,  H01L27/32 ,  G09G3/3275 ,  G09G3/3258 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G06F3/041 ,  G06F2203/04103 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0426 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2320/0204 ,  G09G2320/043 ,  H01L27/1251 ,  H01L27/323 ,  H01L27/3262 ,  H01L27/3265 ,  H01L27/3276 ,  H01L29/78645 ,  H01L29/78696

Abstract: A pixel driving circuit, a driving method and an organic light-emitting display panel are provided. The pixel driving circuit includes: a first transistor, a second transistor, a third transistor, a fourth transistor and a fifth transistor, a sixth transistor, a seventh transistor and an eighth transistors, and a capacitor. A first node is present between the fourth transistor and the fifth transistor. The seventh transistor is coupled between a reference voltage line and the first node, and the eighth transistor is coupled between the reference voltage line and an anode of the light-emitting element.