公开(公告)号：US11467687B2

公开(公告)日：2022-10-11

申请号：US17445733

申请日：2021-08-24

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Chun-Kai Chuang ,  Yu-Ming Liao ,  Pei-Yuan Hung ,  Yu-Hsiang Lin

IPC: G06F3/041 ,  G09G3/00

Abstract: A touch display apparatus is disclosed, which includes a touch display panel and a driving circuit coupled to the touch display panel. The touch display panel is configured for display and touch sensing, and includes plural touch sensing pads. The driving circuit is configured to provide a voltage signal with a test pattern to the touch sensing pads, and is configured to determine whether an open circuit or a short circuit exists in the touch display panel from a detected signal in response to the voltage signal.

公开(公告)号：US11460947B1

公开(公告)日：2022-10-04

申请号：US17500647

申请日：2021-10-13

Applicant: Himax Technologies Limited

Inventor： Chun-Jen Su ,  Chun-Kai Chuang ,  Cheng-Hung Tsai ,  Po-Hsuan Huang ,  Li-Lin Liu ,  Heng-Xiao Chen

IPC: G06F3/041 ,  G06F3/04886

Abstract: A touch screen includes a touch panel including a plurality of touch blocks, and a knob, being touch-sensitive and rotatable, disposed on top of the touch panel. An area of the touch panel not covered with the knob is defined as a first area, an area of the touch panel covered with the knob is defined as a second area, and touch blocks belonging to both the first area and the second area are defined as overlapped blocks. Sense signals associated with the overlapped blocks are de-emphasized.

公开(公告)号：US20220066586A1

公开(公告)日：2022-03-03

申请号：US17445733

申请日：2021-08-24

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Chun-Kai Chuang ,  Yu-Ming Liao ,  Pei-Yuan Hung ,  Yu-Hsiang Lin

IPC: G06F3/041 ,  G09G3/00

Abstract: A touch display apparatus is disclosed, which includes a touch display panel and a driving circuit coupled to the touch display panel. The touch display panel is configured for display and touch sensing, and includes plural touch sensing pads. The driving circuit is configured to provide a voltage signal with a test pattern to the touch sensing pads, and is configured to determine whether an open circuit or a short circuit exists in the touch display panel from a detected signal in response to the voltage signal.

公开(公告)号：US20220019297A1

公开(公告)日：2022-01-20

申请号：US17177169

申请日：2021-02-16

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Chun-Jen Su ,  Chun-Kai Chuang ,  Heng-An Hsu ,  Wai-Pan Wu ,  Cheng-Hung Tsai

IPC: G06F3/039 ,  G06F3/0362 ,  G06F3/041

Abstract: A knob device is applicable to a touch panel. The knob device includes a knob cover, a plurality of sensing pads and a rotation sensing element. The plurality of sensing pads are fixedly arranged on the touch panel. A gap is form between two sensing pads. The plurality of sensing pads and gaps are distributed in a ring area around a center of an orthographic projection of the knob cover. The rotation sensing element is connected to the knob cover. When the knob cover is turned to be rotated, the rotation sensing element is rotated synchronously. When a user touches the knob device and the rotation sensing element overlaps one of the plurality of sensing pads, the touch panel generates a rotation sensing signal in response to a location of the rotation sensing element.

公开(公告)号：US11226692B1

公开(公告)日：2022-01-18

申请号：US17160303

申请日：2021-01-27

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Chun-Jen Su ,  Chun-Kai Chuang ,  Cheng-Hung Tsai ,  Wai-Pan Wu

IPC: G06F3/0362 ,  G06F3/041

Abstract: A knob device is applicable to a touch panel. The knob device includes a knob cover; and a rotation sensing element. The rotation sensing element includes a base and a plurality of sensing pads connected to the knob cover. The rotation sensing element is arranged between the touch panel and the knob cover. The base is connected to the knob cover. When a user touches the knob device, the touch panel generates a rotation sensing signal in response to a location of the plurality of sensing pads. An orthographic projection of the knob cover on the touch panel is divided into a plurality of parts, the plurality of parts are distributed radially from a center of the orthographic projection of the knob cover, each sensing pad is located in a part and connected to another sensing pad located in another part adjacent to the part.