公开(公告)号：US11961469B2

公开(公告)日：2024-04-16

申请号：US17631039

申请日：2020-07-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chun Yen Liu ,  Dustin Yuk Lun Wai ,  Chiaching Chu

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2330/021

Abstract: A display module, a display drive circuit, and an electronic device. The display module includes a display and at least one driver group. The display includes M rows of sub-pixels arranged in a matrix form. Each sub-pixel includes a driving transistor, a first reset transistor, a first capacitor, and a light emitting device. Each driver group includes M selecting circuits. The Nth selecting circuit is coupled to a second node of a first reset transistor in the Nth row of sub-pixels. The selecting circuit is configured to output a second initial voltage Vint2 to the second node, and is configured to output a first initial voltage Vint1 to the second node, where |Vint2|>|Vint1|.

公开(公告)号：US11308305B2

公开(公告)日：2022-04-19

申请号：US16986609

申请日：2020-08-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xilin Wang ,  Tao Wang ,  Ding Zhong ,  Xiao Xing ,  Wei Ma ,  Chun Yen Liu ,  Sooyoung Woo

IPC: G06K9/00

Abstract: This application provides a fingerprint collection apparatus. According to the fingerprint collection method and the related apparatus that are provided in this application, a sensor array is divided into a plurality of areas in terms of a column based on a quantity of input ports of an analog front end component and a quantity of columns of the sensor array, and sensor units in different areas multiplex input channels of the analog front end component by using switches. In this way, when scanning row scanning lines in the sensor array, a row scanning circuit may control the switches to output, to the analog front end component in a time division manner, original fingerprint data collected by the sensor units in the different areas, so that fewer input channels of the analog front end component can be required, and a size of a fingerprint collection apparatus can be reduced.

公开(公告)号：US20200372850A1

公开(公告)日：2020-11-26

申请号：US16643395

申请日：2017-08-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hu He ,  Haiming He ,  Chun Yen Liu

IPC: G09G3/20 ,  H05K1/18 ,  H05K1/02 ,  G06F1/16

Abstract: A display includes a display panel and at least one display driver chip. The display panel includes a display area and a non-display area surrounding the display area. The display area includes a planar area and a curved bending area located on at least one side of the planar area, where a longitudinal direction of each data signal line is perpendicular to a longitudinal direction of the side of the planar area on which the curved bending area is arranged, and each data signal line extends to a non-display area on the side of the curved bending area of the display area. The display driver chip is connected to data signal lines by using a chip-on-film, and the display driver chip is located in concave space.

公开(公告)号：US20220122500A1

公开(公告)日：2022-04-21

申请号：US17433207

申请日：2020-02-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dustin Yuk Lun Wai ,  Chun Yen Liu ,  Chiaching Chu ,  Xia Li

IPC: G09G3/00 ,  G09G3/3208

Abstract: An electronic device includes a display screen, where the display screen includes a first display region and a second display region, and a display driving system including a first emission (EM) signal output end configured to send a first EM signal to the display screen, where the display driving system further includes a second EM signal output end configured to send a second EM signal to the display screen, where the first EM signal controls the first display region to display an image in a first time period, and the second EM signal controls the second display region not to display an image in the first time period.

公开(公告)号：US20210350733A1

公开(公告)日：2021-11-11

申请号：US17280457

申请日：2018-09-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chun Yen Liu ,  Dustin Yuk Lun Wai

IPC: G09G3/00 ,  G09G3/36 ,  G09G3/3266

Abstract: A gate driving circuit includes a first connection controller, a first driving group configured to receive a start signal from a first signal end of a display driver and a second driving group configured to receive an active signal from a fifth end of the first connection controller. A first end of the first connection controller is configured to receive an active signal from the first driving group. A second end of the first connection controller is configured to receive a cascade gating signal from a second signal end of the display driver. A third end of the first connection controller is configured to receive a split-screen gating signal from a third signal end of the display driver. A fourth end of the first connection controller is configured to receive a split-screen display signal from a fourth signal end of the display driver.

公开(公告)号：US20220327998A1

公开(公告)日：2022-10-13

申请号：US17631039

申请日：2020-07-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chun Yen Liu ,  Dustin Yuk Lun Wai ,  Chiaching Chu

IPC: G09G3/3233

Abstract: A display module, a display drive circuit, and an electronic device. The display module includes a display and at least one driver group. The display includes M rows of sub-pixels arranged in a matrix form. Each sub-pixel includes a driving transistor, a first reset transistor, a first capacitor, and a light emitting device. Each driver group includes M selecting circuits. The Nth selecting circuit is coupled to a second node of a first reset transistor in the Nth row of sub-pixels. The selecting circuit is configured to output a second initial voltage Vint2 to the second node, and is configured to output a first initial voltage Vint1 to the second node, where |Vint2|>|Vint1|.

公开(公告)号：US20220122543A1

公开(公告)日：2022-04-21

申请号：US17433201

申请日：2020-02-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dustin Yuk Lun Wai ,  Chun Yen Liu

IPC: G09G3/3266

Abstract: An electronic device includes a display including a first display area and a second display area. The electronic device further includes a main controller configured to send a first clock signal separately to a first display driver circuit and a second display driver circuit. The first display driver circuit is configured to receive the first clock signal, and to output a first GOA clock signal to the display. The first GOA clock signal is generated based on the first clock signal. The second display driver circuit is configured to receive the first clock signal, and is further configured to output a second GOA clock signal to the display. The second GOA clock signal is generated based on the first clock signal.

公开(公告)号：US11195448B2

公开(公告)日：2021-12-07

申请号：US16643395

申请日：2017-08-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hu He ,  Haiming He ,  Chun Yen Liu

IPC: G09G3/20 ,  H05K1/18 ,  H05K1/02 ,  G06F1/16

Abstract: A display includes a display panel and at least one display driver chip. The display panel includes a display area and a non-display area surrounding the display area. The display area includes a planar area and a curved bending area located on at least one side of the planar area, where a longitudinal direction of each data signal line is perpendicular to a longitudinal direction of the side of the planar area on which the curved bending area is arranged, and each data signal line extends to a non-display area on the side of the curved bending area of the display area. The display driver chip is connected to data signal lines by using a chip-on-film, and the display driver chip is located in concave space.

公开(公告)号：US11881173B2

公开(公告)日：2024-01-23

申请号：US17801742

申请日：2020-11-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chun Yen Liu ,  Ying Chieh Chen ,  Chihche Liu ,  Dustin Yuk Lun Wai ,  Chiaching Chu

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0247

Abstract: This application provide a display module and an electronic device, to reduce a probability of a display flicker. A display module includes a display, a display driver circuit, and at least one driver group; the display includes M rows of sub pixels; each driver group includes M gating circuits; an Nth gating circuit is configured to: receive a first initial voltage Vinit1 and a second initial voltage Vinit2 from the display driver circuit, output the second initial voltage Vinit2 to a second electrode of a first reset transistor and a first electrode of a voltage modulation transistor, and output the first initial voltage Vinit1 to the second electrode of the first reset transistor and the first electrode of the voltage modulation transistor.

公开(公告)号：US11508311B2

公开(公告)日：2022-11-22

申请号：US17433201

申请日：2020-02-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dustin Yuk Lun Wai ,  Chun Yen Liu

IPC: G09G3/3266

Abstract: An electronic device includes a display including a first display area and a second display area. The electronic device further includes a main controller configured to send a first clock signal separately to a first display driver circuit and a second display driver circuit. The first display driver circuit is configured to receive the first clock signal and to output a first GOA clock signal to the display. The first GOA clock signal is generated based on the first clock signal. The second display driver circuit is configured to receive the first clock signal, and is further configured to output a second GOA clock signal to the display. The second GOA clock signal is generated based on the first clock signal.