公开(公告)号：US20210410289A1

公开(公告)日：2021-12-30

申请号：US17003308

申请日：2020-08-26

Applicant: WuHan TianMa Micro-electronics CO., LTD.

Inventor： Han WU ,  Houfu GONG ,  Zhenhua LIANG ,  Xiang HUANG

IPC: H05K3/00 ,  H01R12/59 ,  H05K3/40 ,  H01R12/61 ,  H05K3/30 ,  H05K1/11

Abstract: Provided are a flexible circuit mother board and a detection method. The flexible circuit mother board includes flexible circuit daughter boards, at least one detection terminal group and external pad groups corresponding to the flexible circuit daughter boards in one-to-one correspondence. Each flexible circuit daughter board has a bonding pad area adjacent to a corresponding one of the plurality of external pad groups. Each detection terminal group detects at least one flexible circuit daughter board, and each of the at least one detection terminal group comprises a plurality of detection terminals. Each flexible circuit daughter board includes a plurality of capacitors including a first electrode plate and a second electrode plate. Each of the first electrode plate and the second electrode plate is electrically connected to one detection terminal.

公开(公告)号：US20210382599A1

公开(公告)日：2021-12-09

申请号：US17406149

申请日：2021-08-19

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.

Inventor： Houfu GONG ,  Miao CHEN ,  Chuan LIU ,  Jun LI ,  Zhihua YU

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/20

Abstract: Disclosed are touch display panel, method for driving touch display panel, and display device. The touch display panel includes display region including plurality of touch driver electrodes and plurality of touch sensing electrodes both arranged in array, and non-display region surrounding display region and including touch auxiliary circuit and touch driver circuit. When refresh frequency is first frequency, touch driver circuit configured to provide touch drive signal for each touch driver electrode in touch stage, and receive touch sensing signal returned by each touch sensing electrode to determine touch position according to touch sensing signal. When refresh frequency is the first frequency, touch auxiliary circuit configured to provide first voltage signal for each touch driver electrode in touch stage; and voltage of first voltage signal greater than voltage of touch drive signal. The present disclosure can increase report rate, and satisfy touch and display requirements for high refresh frequency.

公开(公告)号：US20220035484A1

公开(公告)日：2022-02-03

申请号：US17019773

申请日：2020-09-14

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.

Inventor： Houfu GONG ,  Zhenhua LIANG ,  Han WU ,  Zhenyuan ZHANG ,  Jun LI ,  Zhihua YU

IPC: G06F3/044 ,  G06F3/041

Abstract: A display panel, a display device and a control method are provided. The display panel includes a display area and a non-display area, a base substrate, and touch electrodes on a side of the base substrate facing a light-exiting surface of the display panel. The display area includes a first display area and a second display area that at least partially surrounds the first display area, the touch electrodes are at least distributed in the display area, the touch electrodes at least include a first touch electrode located in the first display area, the first touch electrode includes at least one first touch electrode unit, and the first touch electrode unit includes at least one hollowed part, along a direction perpendicular to the base substrate, the hollowed part runs through the first touch electrode unit, and the first touch electrode is a self-capacitive touch electrode.

公开(公告)号：US20210065596A1

公开(公告)日：2021-03-04

申请号：US16730867

申请日：2019-12-30

Applicant: WuHan TianMa Micro-electronics CO.,LTD

Inventor： Han WU ,  Houfu GONG ,  Jun LI

IPC: G09G3/00 ,  G06F1/16

Abstract: A flexible circuit board, a display panel, a display device, and a test method are provided. The flexible circuit board includes a flexible circuit board body and a driving chip. First to third dummy terminals are provided on a surface of the flexible circuit board body. Fourth to sixth dummy terminals are electrically connected to a common node in the driving chip. An external sink current output line and an external sink current input line form an external sink current loop through the driving chip. A bonding resistance between the first and fourth dummy terminals is a first bonding resistance, and a bonding resistance between the second and the fifth dummy terminals is a second bonding resistance. The first bonding resistance and the second bonding resistance each are a resistance on the external sink current loop.