公开(公告)号：US12223151B2

公开(公告)日：2025-02-11

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

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：US12154732B2

公开(公告)日：2024-11-26

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 ,  G06F3/02 ,  H01H13/14 ,  H03K17/96

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：US11437994B2

公开(公告)日：2022-09-06

申请号：US17134940

申请日：2020-12-28

Applicant: PIXART IMAGING INC.

Inventor： Che-Chia Hsu ,  Yu-Han Chen ,  Chi-Chieh Liao

IPC: H03K17/96 ,  G06F3/044 ,  G06F3/02

Abstract: A touch sensor and a keyboard using the same are provided. The touch sensor includes a plurality of main sensor structures and a plurality of resilient structures. Any two adjacent ones of the main sensor structures have a gap therebetween. Each of the resilient structures is connected between two adjacent ones of the main sensor structures, and each of the resilient structures has a cross-sectional width that is less than a width of the gap.

公开(公告)号：US10437365B2

公开(公告)日：2019-10-08

申请号：US15730698

申请日：2017-10-11

Applicant: PixArt Imaging Inc.

Inventor： Chi-Chieh Liao ,  Che-Chia Hsu ,  Yu-Han Chen

IPC: G06F3/041 ,  G06F3/044 ,  H03M1/12

Abstract: A driver integrated circuit (IC) includes: a built-in capacitor, a reading circuit, an analog-to-digital converter (ADC) and a coupling circuit, wherein the reading circuit receives a sensing signal from a touch panel and outputs an analog sensing data; the ADC is coupled to the reading circuit, and is used to receive and convert the analog sensing data to a digital sensing data; and the coupling circuit is coupled to the reading circuit, and is used to selectively couple the built-in capacitor to the touch panel when the driver IC operates in a touch sensing mode.

公开(公告)号：US20190107907A1

公开(公告)日：2019-04-11

申请号：US15730698

申请日：2017-10-11

Applicant: PixArt Imaging Inc.

Inventor： Chi-Chieh Liao ,  Che-Chia Hsu ,  Yu-Han Chen

IPC: G06F3/041 ,  G06F3/044 ,  H03M1/12

CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F3/04166 ,  G06F3/044 ,  G06F3/0446 ,  H03M1/12

Abstract: A driver integrated circuit (IC) includes: a built-in capacitor, a reading circuit, an analog-to-digital converter (ADC) and a coupling circuit, wherein the reading circuit receives a sensing signal from a touch panel and outputs an analog sensing data; the ADC is coupled to the reading circuit, and is used to receive and convert the analog sensing data to a digital sensing data; and the coupling circuit is coupled to the reading circuit, and is used to selectively couple the built-in capacitor to the touch panel when the driver IC operates in a touch sensing mode.