Chunghwa Picture Tubes, Ltd.

Shih-Hung Huang

Hung-Hsiang Chen

Chao-Yong Hsu

Chih-chao Chang

Yu-Chen Li

A driving method for touch panel includes providing a plurality of driving signals with a first voltage level to a plurality of sensing electrodes of a touch panel; receiving a plurality of sensing signals corresponding to the plurality of driving signals with the first voltage level from the plurality of sensing electrodes of the touch panel; obtaining a second voltage level according to the plurality of sensing signals, the second voltage level being different from the first voltage level; and providing a plurality of driving signals with the second voltage level to the plurality of sensing electrodes of the touch panel.

Driving method for touch panel and touch control system

A method of driving touch display includes a switching circuit driving each block of N blocks of a touch panel to display a corresponding image according to a driving signal generated by a liquid crystal driving unit during a first predetermined time within each horizontal synchronization signal period corresponding to the block between two vertical synchronization signals of the touch panel; the switching circuit executing touch scanning on M blocks of the N blocks only corresponding to the block according to touch scanning signals generated by a touch control unit during a second predetermined time within the horizontal synchronization signal period; and the touch control unit receiving and processing a touch scanning result corresponding to each block of the M blocks through the switching circuit during a third predetermined time within the horizontal synchronization signal period, where N and M are integers, and M is smaller than N.

Method of driving touch display and touch display capable of increasing signal-to-noise ratio

A capacitive touch panel comprises a touch detection array having rows of first direction detection units and columns of second direction detection units, shared scan lines, independent scan lines and a driver control module. The first direction detection units are divided into a first group and a second group of rows arranged in an alternating manner. Each shared scan line is connected to one row of the first direction detection units in the first group and one column of the second direction detection units. Each independent scan line is connected to one row of the first direction detection units or one column of the second direction detection units that is not connected to the shared scan lines. The driver control module is connected to the shared scan lines and the independent scan lines to perform scanning processes to detect a touch input. A touch detection method is also disclosed.

Capacitive touch panel and touch detection method of the same

Disclosure is an electrode array of a touch panel, which includes a plurality of rhombus-shaped electrodes, dumbbell-shaped electrodes, and bridge wires. The rhombus-shaped electrodes are arranged along a first direction and interconnected in the first direction. The dumbbell-shaped electrodes are arranged along a second direction. Each dumbbell-shaped electrode has a first enlarged part, a second enlarged part, and a narrow part. Here, each rhombus-shaped electrode is disposed between two adjacent dumbbell-shaped electrodes along the second direction. The bridge wires are used for electrically coupling the two first enlarged parts and the two second enlarged parts of the two adjacent dumbbell-shaped electrodes, respectively. The production reliability of the present invention is increased according to the dumbbell-shaped electrodes.

Electrode array of touch panel

The touch control system with multi-touch detection functions includes a touch panel, a first transceiver, a second transceiver, and a processor. The first transceiver scans N first sensing lines along a first axis of a touch panel, and detects at least one first sensing line touched by at least one object according to the scanning result. The first transceiver inputs at least one high frequency signal to the at least one first sensing line touched by the at least one object, and the second transceiver inputs M low frequency signals to M second sensing lines along a second axis of the touch panel. The processor receives and detects M feedback signals of the M second sensing lines along the second axis, and determines a position of at least one touch point according to the M feedback signals.

Touch control system with multi-touch detection functions

A touch panel includes a substrate, plural first bridges, an insulating layer, plural conductive columns, plural second bridges, plural first sensing pads, plural second sensing pads, a reticulated electrode, and plural discharge electrodes. The insulating layer disposed on the substrate covers the first bridges and the substrate. The conductive columns are connected between the first sensing pads and the first bridges. The second bridges, the first sensing pads, the second sensing pads, the reticulated electrode, and the discharge electrodes are disposed on the insulating layer. Each of the second bridges is connected between two adjacent second sensing pads. The first sensing pads and the second sensing pads are located in openings of the reticulated electrode respectively and electrically insulated from the reticulated electrode. Each of the discharge electrodes connected to the reticulated electrode is located between two adjacent first sensing pads and between two adjacent second sensing pads.

Growing community of inventors

Taoyuan County, Taiwan

Shih-Hung Huang