公开(公告)号：US10685597B2

公开(公告)日：2020-06-16

申请号：US16151372

申请日：2018-10-04

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

Inventor： Yue Li ,  Renyuan Zhu ,  Dongxu Xiang ,  Yana Gao ,  Xingyao Zhou ,  Gaojun Huang ,  Yilin Xu ,  Zhonglan Cai ,  Juan Zhu

IPC: G09G3/3266 ,  G09G3/22 ,  G06F1/04

Abstract: Provided is a shift register, including a first node control module for controlling a level state of a first node based on an input signal, a first clock signal and a second clock signal. The shift register includes a second node control module for controlling a level state of a second node based on the input signal, the first clock signal, the second clock signal and the level state of the first node. In a phase when the input signal is at high level and the first clock signal is at low level, a third node for controlling a level at the second node is provided with high level, such that in a phase when the input signal is at high level and the second clock signal is at low level, the level at the third node is pulled down so as to provide low level at the second node.

公开(公告)号：US10522074B2

公开(公告)日：2019-12-31

申请号：US16131088

申请日：2018-09-14

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

Inventor： Yue Li ,  Renyuan Zhu ,  Dongxu Xiang ,  Yana Gao ,  Xingyao Zhou ,  Gaojun Huang ,  Yilin Xu ,  Zhonglan Cai ,  Juan Zhu

IPC: G09G3/3225

Abstract: The present disclosure provides a shift register, a driving method of the shift register, an emission driving circuit, and a display device. The shift register includes a first node control module, a second node control module and an output control module. A first low level signal VGL1 provides low level at a first node, and a high level signal provides high level at a second node. The output control module includes a transistor for outputting low level, so that an output terminal outputs a third low level signal. The first low level signal VGL1, the third low level signal VGL3 and a threshold voltage Vth1 of the transistor in the output control module satisfy a relation of VGL3>VGL1+|Vth1|, such that in a phase following the output terminal outputting the high level signal, the output terminal completely outputs the third low level signal.

公开(公告)号：US10347659B2

公开(公告)日：2019-07-09

申请号：US15873915

申请日：2018-01-18

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

Inventor： Kerui Xi ,  Tingting Cui ,  Zhonglan Cai ,  Zuzhao Xu

IPC: H01L27/12 ,  H01L27/32 ,  H01L29/423 ,  G06F13/40 ,  H01L29/417 ,  G02F1/1362 ,  H01L51/52

Abstract: A display panel is described. Further, an electroluminescent display panel and a display device are described. By arrangement of a second signal bus line, a first end of a first signal line in a first display area in the display panel is electrically connected with the first signal bus line, and the second end of the first signal line is electrically connected with a first conducting wire in the second signal bus line, so that uniformity of a signal input by the first signal line in the first display area can be ensured. Therefore, the structure is not only the precondition of ensuring signal uniformity of the first display area, but is also the precondition of ensuring signal uniformity of a display area of the entire display panel.

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：US11741882B2

公开(公告)日：2023-08-29

申请号：US17565486

申请日：2021-12-30

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH

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

IPC: G09G3/22 ,  G09G3/3233 ,  G09G3/3266 ,  H10K59/10

CPC classification number: G09G3/22 ,  G09G3/3233 ,  G09G3/3266 ,  H10K59/10 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  G09G2310/0262 ,  G09G2310/0264 ,  G09G2310/0286 ,  G09G2320/0626

Abstract: Provided are an organic light-emitting display panel, a driving method and a driving device therefor. The driving method includes: setting brightness levels of the organic light-emitting display panel and maximum gray scale brightness levels, and maximum gray scale brightness levels include a first maximum gray scale brightness corresponding to a maximum brightness level of the organic light-emitting display panel, and an effective pulse duty cycle of a light-emitting control signal for driving the first maximum gray scale brightness is defined as a first effective pulse duty cycle; determining a target brightness level of the switched picture and a target maximum gray scale brightness corresponding to the target brightness level; adjusting the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture.

公开(公告)号：US10909950B2

公开(公告)日：2021-02-02

申请号：US16137602

申请日：2018-09-21

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

Inventor： Yana Gao ,  Xingyao Zhou ,  Yue Li ,  Dongxu Xiang ,  Renyuan Zhu ,  Zhonglan Cai ,  Juan Zhu ,  Gaojun Huang ,  Yilin Xu

IPC: G09G5/10

Abstract: The present disclosure provides an emission controller, a driving method thereof, and a display device. The emission controller includes a first processing module, a second processing module, a third processing module, an output module and a shift control module. The first processing module generates a first signal in response to a first control signal, a second control signal and a second signal. The second processing module generates a second signal in response to the first control signal and the first signal. The third processing module generates third and fourth signals in response to the second control signal, the second and first signals. The output module provides emission control signal in response the first and fourth signal. The shift control module provides a shift control signal in response to the first and fourth signal, or provides a shift control signal in response to the first and third signal.

公开(公告)号：US10657877B2

公开(公告)日：2020-05-19

申请号：US16190670

申请日：2018-11-14

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

Inventor： Renyuan Zhu ,  Yue Li ,  Dongxu Xiang ,  Yana Gao ,  Xingyao Zhou ,  Gaojun Huang ,  Yilin Xu ,  Zhonglan Cai ,  Juan Zhu

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

Abstract: The present disclosure provides a driving circuit, a display device and a driving method. The driving circuit includes a shift register including: a first input unit for controlling a first node based on signals at first and second clock signal terminals, an input signal terminal, a second node and an output signal terminal; a second input unit for providing a signal at a first constant potential terminal to the second node under control of the first clock signal terminal and providing the signal at the input signal terminal or the first clock signal terminal to the second node under control of the first node; and an output unit for providing a signal at the second clock signal terminal to the output signal terminal under control of the first node and providing a signal at a second constant potential terminal to the output signal terminal under control of the second node.

公开(公告)号：US11289054B2

公开(公告)日：2022-03-29

申请号：US17134932

申请日：2020-12-28

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

Inventor： Yana Gao ,  Xingyao Zhou ,  Yue Li ,  Dongxu Xiang ,  Renyuan Zhu ,  Zhonglan Cai ,  Juan Zhu ,  Gaojun Huang ,  Yilin Xu

IPC: G09G5/10

Abstract: The present disclosure provides an emission controller, a driving method thereof, and a display device. The emission controller includes a first processing module, a second processing module, a third processing module, an output module and a shift control module. The first processing module generates a first signal in response to a first control signal, a second control signal and a second signal. The second processing module generates a second signal in response to the first control signal and the first signal. The third processing module generates third and fourth signals in response to the second control signal, the second and first signals. The output module provides emission control signal in response the first and fourth signal. The shift control module provides a shift control signal in response to the first and fourth signal, or provides a shift control signal in response to the first and third signal.

公开(公告)号：US10762976B2

公开(公告)日：2020-09-01

申请号：US16197521

申请日：2018-11-21

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

Inventor： Renyuan Zhu ,  Yue Li ,  Dongxu Xiang ,  Yana Gao ,  Xingyao Zhou ,  Gaojun Huang ,  Yilin Xu ,  Zhonglan Cai ,  Juan Zhu

IPC: G11C19/00 ,  G11C19/28 ,  G09G3/3266

Abstract: The present disclosure provides a shift register. The shift register includes: a first node control module for controlling level at the first node; a second node control module for controlling level at a second node; and an output control module for controlling the output terminal to output high or low level. The first node control module includes an input unit configured to write the input signal into the third node and a protection unit configured to control a level at a fourth node based on a level at the third node and control writing of the level at the fourth node into the first node based on the second clock signal. The technical solution of the present disclosure can prevent the transistor for providing the third node with inputting signal from being broken down.

公开(公告)号：US10600353B2

公开(公告)日：2020-03-24

申请号：US15912045

申请日：2018-03-05

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

Inventor： Kerui Xi ,  Tingting Cui ,  Baiquan Lin ,  Junting Ouyang ,  Zhonglan Cai

IPC: G09G3/30 ,  G09G3/3233

Abstract: Disclosed are a method for driving a pixel circuit, a display panel and a display device. The pixel circuit includes: a data write module, a drive transistor, a hold module and a light-emitting element. The method comprises, in a time period for a frame of display: a data writing stage in which a data signal is written by the data write module into a gate electrode of the drive transistor; a light-emitting stage in which a voltage on the gate electrode of the drive transistor is held by the hold module, the drive transistor supplies a drive current to the light-emitting element, and the light-emitting element emits light in response to the drive current; and a cut-off stage in which the drive transistor operates in a full cut-off region.