公开(公告)号：US20230266191A1

公开(公告)日：2023-08-24

申请号：US18142055

申请日：2023-05-02

Applicant: PIXART IMAGING INC.

Inventor： CHE-CHIA HSU ,  YU-HAN CHEN ,  CHI-CHIEH LIAO

IPC: G01L9/12 ,  G01L9/00

CPC classification number: G01L9/12 ,  G01L9/0005

Abstract: A pressure sensing unit is provided. The pressure sensing unit includes a membrane and a pressure sensing pad group. The membrane has a first surface and a second surface. The pressure sensing pad group includes a first pressure sensing pad, a second pressure sensing pad, and a ground pad that are spaced apart from one another. The ground pad and one among the first pressure sensing pad and the second pressure sensing pad are located at the first surface of the membrane, another one among the first pressure sensing pad and the second pressure sensing pad is located at the second surface of the membrane, and an orthographic projection of the ground pad projected onto a reference plane is located between orthographic projections of the first pressure sensing pad and the second pressure sensing pad that are projected onto the reference plane.

公开(公告)号：US20200153432A1

公开(公告)日：2020-05-14

申请号：US16744580

申请日：2020-01-16

Applicant: PixArt Imaging Inc.

Inventor： SUNG-HAN WU ,  CHE-CHIA HSU ,  Chia-Yi LEE

IPC: H03K17/96 ,  H03K17/98

Abstract: A capacitive touch system including a drive end, a capacitive touch sensing device and a detection end is provided. The drive end inputs a modulated drive signal into an input channel of the capacitive sensing device, wherein the modulated drive signal includes a plurality of driving frequencies. The detection end detects a detection signal of an output channel of the capacitive sensing device and generates a two-dimensional detection vector corresponding to each of the driving frequencies. The capacitive touch system includes a touch panel or a touch keyboard.

公开(公告)号：US20250123721A1

公开(公告)日：2025-04-17

申请号：US18990037

申请日：2024-12-20

Applicant: PIXART IMAGING INC.

Inventor： CHE-CHIA HSU ,  CHUN-LIN TSENG ,  YU-HAN CHEN

IPC: G06F3/044

Abstract: A circuit carrier includes a substrate, a capacitive electrode layer, a plurality of metal pads and a plurality of bridges, and a plurality of conductive pillars. The capacitive electrode layer formed on a surface of the substrate and includes a plurality of first electrodes and a plurality of second electrodes. At least two of the first electrodes are connected to each other and be arranged across a die-bonding region of the substrate for separating at least two of the second electrodes that partially protrude from the die-bonding region to respectively form extensions. The metal pads and the bridges are formed on another surface of the substrate and are located outside of the die-bonding region. Each of the bridges connects two of the metal pads, and each of the conductive pillars is embedded in the substrate and connects one of the extensions and a corresponding one of metal pads.

公开(公告)号：US20250068286A1

公开(公告)日：2025-02-27

申请号：US18939607

申请日：2024-11-07

Applicant: PIXART IMAGING INC.

Inventor： CHE-CHIA HSU ,  CHI-CHIEH LIAO ,  YU-HAN CHEN

IPC: G06F3/044 ,  G06F3/041 ,  H01L25/075

Abstract: A capacitive touchpad is provided, which includes a substrate module, a plurality of sensing electrodes, a plurality of driving electrodes and a plurality of light-emitting diode (LED) dies. The plurality of sensing electrodes and the plurality of driving electrodes form a touch sensing region of the capacitive touchpad, and the touch sensing region is divided into a plurality of sensing units having same areas. Each of the LED dies is arranged in two adjacent ones of the plurality of sensing units, and a position of each of the LED dies corresponds to one of the plurality of driving electrodes, and the LED dies are electrically isolated from the plurality of sensing electrodes and the plurality of driving electrodes.

公开(公告)号：US20240288976A1

公开(公告)日：2024-08-29

申请号：US18640087

申请日：2024-04-19

Applicant: PIXART IMAGING INC.

Inventor： CHE-CHIA HSU ,  CHUN-LIN TSENG ,  YU-HAN CHEN

IPC: G06F3/044

CPC classification number: G06F3/0446 ,  G06F2203/04111

Abstract: A circuit carrier includes a substrate, a capacitive electrode layer, a plurality of metal pads and a plurality of bridges, and a plurality of conductive pillars. The capacitive electrode layer formed on a surface of the substrate and includes a plurality of first electrodes and a plurality of second electrodes. At least two of the first electrodes are connected to each other and be arranged across a die-bonding region of the substrate for separating at least two of the second electrodes that partially protrude from the die-bonding region to respectively form extensions. The metal pads and the bridges are formed on another surface of the substrate and are located outside of the die-bonding region. Each of the bridges connects two of the metal pads, and each of the conductive pillars is embedded in the substrate and connects one of the extensions and a corresponding one of metal pads.

公开(公告)号：US20220413654A1

公开(公告)日：2022-12-29

申请号：US17897722

申请日：2022-08-29

Applicant: PIXART IMAGING INC.

Inventor： CHE-CHIA HSU ,  CHI-CHIEH LIAO ,  YU-HAN CHEN

IPC: G06F3/044 ,  G06F3/041 ,  H01L25/075

Abstract: A capacitive touchpad is provided, which includes a substrate module, a plurality of sensing electrodes, a plurality of driving electrodes and a plurality of light-emitting diode (LED) dies. The plurality of sensing electrodes and the plurality of driving electrodes form a touch sensing region of the capacitive touchpad, and the touch sensing region is divided into a plurality of sensing units having same areas. Each of the LED dies is arranged in two adjacent ones of the plurality of sensing units, and a position of each of the LED dies corresponds to one of the plurality of driving electrodes, and the LED dies are electrically isolated from the plurality of sensing electrodes and the plurality of driving electrodes.

公开(公告)号：US20220344114A1

公开(公告)日：2022-10-27

申请号：US17859072

申请日：2022-07-07

Applicant: PIXART IMAGING INC.

Inventor： CHE-CHIA HSU ,  YU-HAN CHEN ,  CHI-CHIEH LIAO

IPC: H01H13/7065 ,  H01H13/14 ,  H03K17/96 ,  G06F3/02

Abstract: A key unit and a keyboard using the same are provided. The key unit includes a circuit board, a supporting assembly, a keycap, and a floating conductive structure. The circuit board includes a capacitance sensing circuit embedded therein, and the capacitance sensing circuit includes a pair of sensor electrodes which are spaced apart from each other. The supporting assembly is disposed on the circuit board. The keycap is moveably disposed above and spaced apart from the circuit board. The supporting assembly disposed between the keycap and the circuit board allows the keycap to be moved between a non-depressed position and a depressed position with respect to the circuit board. The floating conductive structure is disposed on the supporting assembly, and an orthogonal projection of the floating conductive structure on the circuit board overlaps with the pair of sensor electrodes.

公开(公告)号：US20180321792A1

公开(公告)日：2018-11-08

申请号：US15718023

申请日：2017-09-28

Applicant: PIXART IMAGING INC.

Inventor： SUNG-HAN WU ,  MING-HUNG TSAI ,  CHE-CHIA HSU

IPC: G06F3/041 ,  G06F3/047

CPC classification number: G06F3/0418 ,  G06F3/044 ,  G06F3/047 ,  G06F2203/04111

Abstract: A compensation method for an induced amount in a touch sensor and a touch panel thereof are provided. The compensation method uses a fake finger circuit to simulate the situations when a user touches the sensing nodes of the touch sensor with a finger, and obtains the gain coefficient of each of the sensing nodes, which are used to compensate for the induced capacitance generated by the sensing nodes as a result of being touched by an external object. In this way, the extra effects caused by the difference in basic capacitance can be eliminated by the gain coefficient.

公开(公告)号：US20250046544A1

公开(公告)日：2025-02-06

申请号：US18924142

申请日：2024-10-23

Applicant: PIXART IMAGING INC.

Inventor： CHE-CHIA HSU ,  CHI-CHIEH LIAO ,  YU-HAN CHEN

IPC: H01H13/807 ,  H01H13/14

Abstract: A mechanical key component and a mechanical keyboard are provided. The mechanical key component includes a circuit board, an elastic element and a key cap. The circuit board is provided with a first sensing electrode. The elastic element is disposed on the circuit board, and a movable portion of the elastic element is connected to a second sensing electrode. The key cap is movably disposed on the elastic element. The elastic element enables the key cap to move between an unpressed position and a pressed position, and the movable portion drives the second sensing electrode to move relative to the first sensing electrode. In response to the key cap being moved between the unpressed position and the pressed position, a coupling capacitance between the first sensing electrode and the second sensing electrode changes to indicate whether the key cap is in the unpressed position or the pressed position.

公开(公告)号：US20240319815A1

公开(公告)日：2024-09-26

申请号：US18735474

申请日：2024-06-06

Applicant: PIXART IMAGING INC.

Inventor： CHE-CHIA HSU ,  CHI-CHIEH LIAO ,  YU-HAN CHEN

IPC: G06F3/041 ,  G06F3/044 ,  H01L25/075

CPC classification number: G06F3/0416 ,  G06F3/0445 ,  H01L25/0753

Abstract: A lighting touchpad is provided. The lighting touchpad includes a substrate, a plurality of first electrodes, a plurality of second electrodes, a plurality of bonding pads and a plurality of lighting devices. The plurality of first electrodes, the plurality of second electrodes and the plurality of bonding pads are arranged on the substrate, and the first electrodes, the second electrodes, and the bonding pads are alternately arranged in a sensing area without overlapping with one another. The pluralities of lighting devices are connected to a part of the bonding pads. The sensing area includes a plurality of sensing cells, and the first electrodes, the second electrodes and the bonding pads are arranged according to a predetermined spatial characteristic for each of the sensing cells