公开(公告)号：US12112706B2

公开(公告)日：2024-10-08

申请号：US18308829

申请日：2023-04-28

申请人： WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.

发明人： Jiro Yanase ,  Yojiro Matsueda

IPC分类号： G09G3/325

CPC分类号： G09G3/325 ,  G09G2320/046 ,  G09G2330/021

摘要： A driving transistor is configured to control driving current for the light-emitting element. A first capacitive element and a second capacitive element are connected in series between a gate and a source of the driving transistor. A first switching transistor is configured to switch connection/disconnection between a data line and an intermediate node located between the first capacitive element and the second capacitive element. A second switching transistor is configured to switch connection/disconnection between the gate and a drain of the driving transistor. A third switching transistor is configured to switch connection/disconnection between the intermediate node and a reference power line. A fourth switching transistor is configured to switch supply/non-supply of driving current from the driving transistor to the light-emitting element. A fifth switching transistor is configured to switch connection/disconnection between an anode of the light-emitting element and a reset power line.

公开(公告)号：US11996030B2

公开(公告)日：2024-05-28

申请号：US18181625

申请日：2023-03-10

申请人： HEFEI BOE DISPLAY TECHNOLOGY CO., LTD. ,  BOE TECHNOLOGY GROUP CO., LTD.

发明人： Zuquan Hu ,  Zhenyu Zhang ,  Haipeng Yang ,  Ke Dai

IPC分类号： G09G3/20 ,  G09G3/325 ,  G09G3/3266 ,  G11C19/28

CPC分类号： G09G3/2092 ,  G09G3/325 ,  G09G3/3266 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0286 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/045 ,  G09G2340/16 ,  G11C19/28

摘要： A display device, a gate drive circuit, a shift register and a control method are disclosed. The shift register includes a first shift register unit and a second shift register unit, the first shift register unit is configured to write a first control signal to the first node, and write a first clock signal to the first signal output terminal under control of a voltage of the first node; the second shift register unit is configured to write a second clock signal to the second signal output terminal under control of the voltage of the first node; during time of a frame, the first clock signal and a first input signal provided by a first signal input terminal are pulse signals, and the second clock signal is a DC signal.

公开(公告)号：US20240071320A1

公开(公告)日：2024-02-29

申请号：US18503373

申请日：2023-11-07

申请人： IGNIS INNOVATION INC.

发明人： Jafar Talebzadeh ,  Ray Leerentveld

IPC分类号： G09G3/3283 ,  G09G3/00 ,  G09G3/325 ,  H05B45/60

CPC分类号： G09G3/3283 ,  G09G3/006 ,  G09G3/325 ,  H05B45/60

摘要： A system and method for determining the current of a pixel circuit and an organic light emitting diode (OLED). The pixel circuit is connected to a source driver by a data line. The voltage (or current) supplied to the pixel circuit by the source driver. The current of the pixel and the OLED can be measured by a readout circuit. A value of a voltage from the measured current can be extracted and provided to a processor for further processing.

公开(公告)号：US20230410749A1

公开(公告)日：2023-12-21

申请号：US18065328

申请日：2022-12-13

申请人： HKC CORPORATION LIMITED

发明人： Bin QIU ,  Rongrong LI

IPC分类号： G09G3/325

CPC分类号： G09G3/325 ,  G09G2310/08

摘要： A backlight module includes at least one light-emitting group, each of which comprises a main drive unit provided with a plurality of main signal transmission channels and a plurality of groups of light-emitting units. Each of the main signal transmission channels is connected to a group of the light-emitting units. The backlight module further includes an auxiliary drive unit and a controller connected to the main drive unit and the auxiliary drive unit. The auxiliary drive unit provided with a plurality of auxiliary signal transmission channels and the main drive unit are connected in parallel, the auxiliary signal transmission channels and the main signal transmission channels are arranged in parallel in one-to-one correspondence and connected to the group of light-emitting units. The controller is configured to control operating states of the main signal transmission channel and the auxiliary signal transmission channel according to a refresh frequency and gray-scale data.

公开(公告)号：US11842688B1

公开(公告)日：2023-12-12

申请号：US18065328

申请日：2022-12-13

申请人： HKC CORPORATION LIMITED

发明人： Bin Qiu ,  Rongrong Li

IPC分类号： G09G3/34 ,  G09G3/325

CPC分类号： G09G3/325 ,  G09G2310/08

摘要： A backlight module includes at least one light-emitting group, each of which comprises a main drive unit provided with a plurality of main signal transmission channels and a plurality of groups of light-emitting units. Each of the main signal transmission channels is connected to a group of the light-emitting units. The backlight module further includes an auxiliary drive unit and a controller connected to the main drive unit and the auxiliary drive unit. The auxiliary drive unit provided with a plurality of auxiliary signal transmission channels and the main drive unit are connected in parallel, the auxiliary signal transmission channels and the main signal transmission channels are arranged in parallel in one-to-one correspondence and connected to the group of light-emitting units. The controller is configured to control operating states of the main signal transmission channel and the auxiliary signal transmission channel according to a refresh frequency and gray-scale data.

公开(公告)号：US20230290311A1

公开(公告)日：2023-09-14

申请号：US18321713

申请日：2023-05-22

申请人： SAMSUNG DISPLAY CO., LTD.

发明人： Jin-Tae Jeong ,  Won-Kyu Kwak

IPC分类号： G09G3/3258 ,  G09G3/3233 ,  G09G3/325 ,  G09G3/3266 ,  G09G3/3291

CPC分类号： G09G3/3258 ,  G09G3/3233 ,  G09G3/325 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2320/0238 ,  G09G2300/0814 ,  G09G2300/0842 ,  G09G2310/0278 ,  G09G2300/0809

摘要： A pixel and an organic light emitting diode (OLED) display using the pixel are disclosed. The pixel includes a driving transistor for transmitting a driving current, an OLED configured to receive a first portion of the driving current and a bypass transistor configured to receive a second portion of the driving current.

公开(公告)号：US11676539B2

公开(公告)日：2023-06-13

申请号：US17867254

申请日：2022-07-18

申请人： WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.

发明人： Jiro Yanase ,  Yojiro Matsueda

IPC分类号： G09G3/325

CPC分类号： G09G3/325 ,  G09G2320/046 ,  G09G2330/021

摘要： A driving transistor is configured to control driving current for the light-emitting element. A first capacitive element and a second capacitive element are connected in series between a gate and a source of the driving transistor. A first switching transistor is configured to switch connection/disconnection between a data line and an intermediate node located between the first capacitive element and the second capacitive element. A second switching transistor is configured to switch connection/disconnection between the gate and a drain of the driving transistor. A third switching transistor is configured to switch connection/disconnection between the intermediate node and a reference power line. A fourth switching transistor is configured to switch supply/non-supply of driving current from the driving transistor to the light-emitting element. A fifth switching transistor is configured to switch connection/disconnection between an anode of the light-emitting element and a reset power line.

公开(公告)号：US11657762B2

公开(公告)日：2023-05-23

申请号：US17537243

申请日：2021-11-29

申请人： SAMSUNG DISPLAY CO., LTD.

发明人： Jin-Tae Jeong ,  Won-Kyu Kwak

IPC分类号： G09G3/3258 ,  G09G3/3233 ,  G09G3/325 ,  G09G3/3266 ,  G09G3/3291

CPC分类号： G09G3/3258 ,  G09G3/325 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0809 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0278 ,  G09G2320/0238

摘要： A pixel and an organic light emitting diode (OLED) display using the pixel are disclosed. The pixel includes a driving transistor for transmitting a driving current, an OLED configured to receive a first portion of the driving current and a bypass transistor configured to receive a second portion of the driving current.

公开(公告)号：US20230144029A1

公开(公告)日：2023-05-11

申请号：US17918660

申请日：2021-05-24

申请人： SAPIEN SEMICONDUCTORS INC.

发明人： Jae Hoon LEE ,  Sung Qwan OH

IPC分类号： G09G3/3283 ,  G09G3/325 ,  G06V10/60

CPC分类号： G09G3/3283 ,  G09G3/325 ,  G06V10/60 ,  G09G2320/0626

摘要： Provided is a device for controlling luminance of a display, having a simplified ACL circuit compared to the prior art. The device for controlling luminance of a display calculates the average luminance (Y_avg) when video data is input, and determines the luminance variation (ΔY) according to the average luminance. The device for controlling luminance of a display may adjust the luminance of a display by controlling a current (driving current) that is used to drive a light-emitting diode included in a pixel, instead of modifying video data for the adjustment of luminance. That is, unlike the prior art, the device for controlling luminance of a display does not modify video data, for the control of luminance.

公开(公告)号：US20190251909A1

公开(公告)日：2019-08-15

申请号：US16028073

申请日：2018-07-05

申请人： Ignis Innovation Inc.

发明人： Jafar Talebzadeh ,  Ray Leerentveld

IPC分类号： G09G3/3283 ,  G09G3/00 ,  G09G3/325 ,  H05B33/08

CPC分类号： G09G3/3283 ,  G09G3/006 ,  G09G3/325 ,  H05B33/0896

摘要： A system and method for determining the current of a pixel circuit and an organic light emitting diode (OLED). The pixel circuit is connected to a source driver by a data line. The voltage (or current) supplied to the pixel circuit by the source driver. The current of the pixel and the OLED can be measured by a readout circuit. A value of a voltage from the measured current can be extracted and provided to a processor for further processing.