公开(公告)号：US20220327996A1

公开(公告)日：2022-10-13

申请号：US17256504

申请日：2019-09-05

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Han YUE ,  Minghua XUAN ,  Can ZHANG ,  Can WANG ,  Ming YANG ,  Ning CONG ,  Angran ZHANG ,  Jiao ZHAO ,  Xiaochuan CHEN

IPC: G09G3/3233

Abstract: A pixel driving circuit includes: a driving sub-circuit configured to supply a driving signal to an element to be driven; a detection sub-circuit electrically connected to a detection control signal terminal and a detection node and configured to detect a voltage value of the detection node in response to a detection control signal received at the detection control signal terminal. The detection node is equivalent to a point on a connection line between the driving sub-circuit and the element to be driven.

公开(公告)号：US20210358389A1

公开(公告)日：2021-11-18

申请号：US16605384

申请日：2019-03-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Han YUE ,  Minghua XUAN ,  Ning CONG ,  Xiaochuan CHEN ,  Can ZHANG ,  Can WANG ,  Ming YANG

IPC: G09G3/32

Abstract: A pixel driving circuit, a pixel driving method and a display device are provided. The pixel driving circuit includes a pixel sub-circuit and a power supply control sub-circuit, the pixel sub-circuit includes a first connection terminal, a second connection terminal and a light-emitting element, and is configured to respectively receive a first voltage and a second voltage to drive the light-emitting element to emit light. The power supply control sub-circuit is configured to, in a first state, control the first power supply terminal to provide the first voltage to the first connection terminal of the pixel sub-circuit, control the second power supply terminal to provide the second voltage to the second connection terminal of the pixel sub-circuit, and store energy; and in a second state, release the energy to the first connection terminal and the second connection terminal of the pixel sub-circuit to drive the light-emitting element to emit light.

公开(公告)号：US20210335213A1

公开(公告)日：2021-10-28

申请号：US16610007

申请日：2019-02-14

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Ning CONG ,  Minghua XUAN ,  Han YUE ,  Ming YANG ,  Xiaochuan CHEN ,  Can ZHANG ,  Can WANG ,  Liang CHEN ,  Detao ZHAO

IPC: G09G3/32

Abstract: An array substrate including a plurality of pixel units arranged in a matrix is provided. Each pixel unit at least includes a first sub-pixel, a second sub-pixel and a third sub-pixel that emit light of different colors, the first sub-pixel has a lower luminous efficiency than the second and third sub-pixels. The array substrate further comprises a plurality of first gate lines and a plurality of second gate lines that correspond to respective rows of pixel units of the plurality of pixel units. The first sub-pixel in each row of pixel units of the plurality of pixel units is coupled to a first gate line of the plurality of first gate lines, and the second sub-pixel and the third sub-pixel in the row of pixel units of the plurality of pixel units are both coupled to a second gate line of the plurality of second gate lines.

公开(公告)号：US20210225261A1

公开(公告)日：2021-07-22

申请号：US16629097

申请日：2019-01-04

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Minghua XUAN ,  Han YUE ,  Ning CONG

IPC: G09G3/32

Abstract: A pixel circuit and a driving method thereof, a display panel, and a display device are provided. The pixel circuit includes a light-emitting driving circuit, a storage circuit, and a data writing circuit, a first terminal of the storage circuit is respectively electrically connected to the data writing circuit and the light-emitting driving circuit, a second terminal of the storage circuit is configured to receive a control signal, and the storage circuit is configured to receive and store the first data voltage, to generate a first control voltage, that changes with time, according to the control signal and the first data voltage, and to cause the first control voltage to be applied to the light-emitting driving circuit to control a turn-on time of the light-emitting driving circuit; and the light-emitting driving circuit is configured to drive the light-emitting element emit light under control of the first control voltage.

公开(公告)号：US20210200351A1

公开(公告)日：2021-07-01

申请号：US16078061

申请日：2017-12-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji YANG ,  Xue DONG ,  Jing LV ,  Xiaochuan CHEN ,  Dongni LIU ,  Lei WANG ,  Pengcheng LU ,  Jie FU ,  Han YUE ,  Li XIAO

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3266 ,  G09G3/36

Abstract: A shift register unit includes an input circuit, a first control circuit, a second control circuit, a third control circuit, a first output circuit, and a second output circuit. The first and second output circuits selectively transfer a first reference voltage from a first reference voltage terminal and a third reference voltage from a third reference voltage terminal to an output terminal of the shift register unit. This allows the shift register unit to output a desired output signal in an easy manner.

公开(公告)号：US20200035158A1

公开(公告)日：2020-01-30

申请号：US15735793

申请日：2017-06-21

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji YANG ,  Xue DONG ,  Jing LV ,  Xiaochuan CHEN ,  Dongni LIU ,  Pengcheng LU ,  Lei WANG ,  Jie FU ,  Han YUE ,  Li XIAO

IPC: G09G3/3258 ,  G09G3/3283 ,  H01L27/32

Abstract: A pixel driving circuit, a method for driving the same and a display device are provided. The pixel driving circuit includes a driving transistor, a reset control unit, a charging-discharging unit, a compensation control unit and a light-emission control unit, the reset control unit is connected to a reset control signal output end, an initial signal output end and a control node respectively, a gate electrode of the driving transistor is connected to the control node, the compensation control unit is connected to a compensation control signal output end, the light-emission control unit is connected to a high level output end, a main light-emission control line, a first electrode of the driving transistor, a second electrode of the driving transistor, N secondary light-emission control lines and N light-emission elements respectively.

公开(公告)号：US20190287455A1

公开(公告)日：2019-09-19

申请号：US16098235

申请日：2018-04-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengcheng LU ,  Xiaochuan CHEN ,  Minghua XUAN ,  Shengji YANG ,  Lei WANG ,  Li XIAO ,  Dongni LIU ,  Jie FU ,  Han YUE ,  Jian GAO ,  Changfeng LI

IPC: G09G3/3225 ,  G09G3/32

Abstract: A pixel circuit and a driving method thereof, display panel and a display device are disclosed. The pixel circuit includes an input control sub-circuit, a switch control sub-circuit, a latch sub-circuit and a light-emitting sub-circuit. The input control sub-circuit writes a data signal into a first node under control of the gate signal terminal. The switch control sub-circuit conducts a first terminal or a second terminal of the latch sub-circuit with the first node under control of a switch signal control terminal. The latch sub-circuit outputs a high-level signal to the first node, when the first node is conductive with the first terminal and outputs a low-level signal to the first node, when the first node is conductive with the second terminal. The light-emitting sub-circuit emits light when the first node is supplied with the high-level signal.

公开(公告)号：US20190043422A1

公开(公告)日：2019-02-07

申请号：US15778047

申请日：2017-09-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengcheng LU ,  Xiaochuan CHEN ,  Shengji YANG ,  Lei WANG ,  Dongni LIU ,  Jie FU ,  Li XIAO ,  Han YUE ,  Jian GAO ,  Changfeng LI

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/00 ,  G09G3/3291

Abstract: Embodiments of the present disclosure provide a protection circuit and method, a pixel circuit, and a display device. The protection circuit comprises a determination circuit, a first coupling circuit, a first terminal and a second terminal. The determination circuit is coupled to the first terminal and the first coupling circuit, and is configured to determine whether the voltage at the first terminal of the protection circuit belongs to one of a first predetermined range and a second predetermined range. The first coupling circuit is coupled to the first terminal, the second terminal and the determination circuit, and is configured to: couple the first terminal to the second terminal in response to the voltage at the first terminal belonging to the first predetermined range; and decouple the first terminal from the second terminal in response to the voltage at the first terminal belonging to the second predetermined range.

公开(公告)号：US20190012965A1

公开(公告)日：2019-01-10

申请号：US15744986

申请日：2017-08-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jie FU ,  Xiaochuan CHEN ,  Shengji YANG ,  Lei WANG ,  Yankai GAO ,  Dongni LIU ,  Han YUE ,  Li XIAO ,  Pengcheng LU ,  Mingfu HAN

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

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2310/0264 ,  G09G2330/04 ,  G09G2330/08 ,  G09G2330/10 ,  H01L27/3276 ,  H01L51/5206 ,  H01L51/5221

Abstract: A pixel circuit and a driving method thereof, and a display device. The pixel circuit includes a driving circuit, a light emitting circuit, a fusing circuit and a fusing control circuit. The driving circuit is configured to convert a voltage signal input from a first voltage terminal into a driving current signal, and to output the driving current signal to the fusing circuit; the fusing circuit is configured to disconnect the light emitting circuit from the driving circuit; the fusing control circuit is configured to control the driving current signal to flow to the ground terminal under control of a signal input from the control line, to disconnect the light emitting circuit from the driving circuit; and the light emitting circuit is configured to emit light under control of the second voltage terminal in a case that the light emitting circuit is not disconnected from the driving circuit.

公开(公告)号：US20190005881A1

公开(公告)日：2019-01-03

申请号：US15744476

申请日：2017-06-14

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Han YUE ,  Xiaochuan CHEN ,  Shengji YANG ,  Dongni LIU ,  Lei WANG ,  Jie FU ,  Pengcheng LU ,  Li XIAO

IPC: G09G3/3241

Abstract: A pixel circuit and a driving method thereof, a display panel. The pixel circuit includes a driving circuit, a light emitting circuit and a short-circuit protection circuit. The short-circuit protection circuit is connected in series between the driving circuit and the light emitting circuit, and the short-circuit protection circuit is configured to obtain an input terminal signal of the light emitting circuit and disconnect or connect an input signal branch of the light emitting circuit according to the obtained input terminal signal of the light emitting circuit.