Patents by Inventor Wai Pan Wu

Wai Pan Wu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200326827
    Abstract: A touch panel includes a first electrode layer and a second electrode layer. The first electrode layer has transmitting electrodes arranged in transmitting channels and traces respectively coupled to the transmitting channels. The second electrode layer has receiving electrodes arranged in receiving channels. At least one of the traces, the transmitting channels and one of the receiving channels in proximity of the traces form touch detection blocks that respectively correspond to the transmitting channels. For each touch detection block, in a circle area overlapped with at least one of the traces and substantially in the touch detection block corresponding to one of the transmitting channels, a summation of areas of the corresponded transmitting channel and the trace coupled to the corresponded transmitting channel is substantially larger than a summation of areas of the other transmitting channels and the other traces.
    Type: Application
    Filed: April 10, 2019
    Publication date: October 15, 2020
    Inventors: Cheng-Hung TSAI, Chin-Yuan CHIANG, Wai-Pan WU, Shen-Feng TAI
  • Publication number: 20200241662
    Abstract: A touch system includes channel electrodes that are mapped to touch pixels such that a number of the channel electrodes in each dimension is lower than a number of the touch pixels in said dimension. In one embodiment, each channel electrode has different adjacent channel electrodes at different positions of the mapped touch pixel. In another embodiment, each touch pixel in said dimension is laterally extended to at least one adjacent touch pixel in said dimension. In a further embodiment, original sensing channel electrodes and mirrored sensing channel electrodes are alternately corresponded to the driving channel electrodes.
    Type: Application
    Filed: January 24, 2019
    Publication date: July 30, 2020
    Inventors: Cheng-Hung Tsai, Chin-Yuan Chiang, Wai-Pan Wu, Li-Lin Liu, Shen-Feng Tai
  • Patent number: 10712886
    Abstract: A sensing unit in the touch panel includes a first electrode formed in a first film and a second electrode formed in a second film. The first electrode includes multiple extending portions and at least one connecting portion. The extending portions extend along a first direction. The connecting portion extends along a second direction which is different from the first direction. The extending portions are spaced from each other by a distance along the second direction, and the connecting portion connects the extending portions. The second electrode includes a circular pad having an opening. The extending portions at least partially overlap with the circular pad, and the connecting portion is formed in an area overlapping with the opening.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: July 14, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Cheng-Hung Tsai, Ying-Zhuan Liu, Xue-Xia Cai, Yuan-Ting Chen, Jui-Ni Li, Wai-Pan Wu, Shen-Feng Tai
  • Patent number: 10649601
    Abstract: A method for improving touch performance of a capacitive touch screen with a non-rectangular shape is provided. The capacitive touch screen includes plural complete cells and at least one incomplete cell for sensing. The method includes: determining whether an active area of the incomplete cell is different from an active area of each of the complete cells; and performing a mutual capacitance compensation on the incomplete cell to compensate a mutual capacitance of the incomplete cell when the active area of the incomplete cell is different from the active area of each of the complete cells.
    Type: Grant
    Filed: October 28, 2018
    Date of Patent: May 12, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Cheng-Hung Tsai, Yan-Hua Shu, Jen-Chieh Lin, Wai-Pan Wu
  • Publication number: 20200133410
    Abstract: A method for improving touch performance of a capacitive touch screen with a non-rectangular shape is provided. The capacitive touch screen includes plural complete cells and at least one incomplete cell for sensing. The method includes: determining whether an active area of the incomplete cell is different from an active area of each of the complete cells; and performing a mutual capacitance compensation on the incomplete cell to compensate a mutual capacitance of the incomplete cell when the active area of the incomplete cell is different from the active area of each of the complete cells.
    Type: Application
    Filed: October 28, 2018
    Publication date: April 30, 2020
    Inventors: Cheng-Hung TSAI, Yan-Hua SHU, Jen-Chieh LIN, Wai-Pan WU
  • Patent number: 10521060
    Abstract: A reflected-capacitive touch panel of a wearable electronic device includes a center touch sensing portion composed of a plurality of mutual-capacitance sensors; a border touch sensing portion composed of a plurality of hybrid self-capacitance and mutual-capacitance sensors; and a predetermined bonding area into which channels of the center touch sensing portion and the border touch sensing portion are routed.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: December 31, 2019
    Assignee: Himax Technologies Limited
    Inventors: Cheng-Hung Tsai, Yao-Mao Liu, Wen-Juan Li, Jyun-Yan Liu, Li-Lin Liu, Jui-Ni Li, Wai-Pan Wu, Shen-Feng Tai
  • Publication number: 20190391687
    Abstract: A sensing unit in the touch panel includes a first electrode formed in a first film and a second electrode formed in a second film. The first electrode includes multiple extending portions and at least one connecting portion. The extending portions extend along a first direction. The connecting portion extends along a second direction which is different from the first direction. The extending portions are spaced from each other by a distance along the second direction, and the connecting portion connects the extending portions. The second electrode includes a circular pad having an opening. The extending portions at least partially overlap with the circular pad, and the connecting portion is formed in an area overlapping with the opening.
    Type: Application
    Filed: October 5, 2018
    Publication date: December 26, 2019
    Inventors: Cheng-Hung TSAI, Ying-Zhuan LIU, Xue-Xia CAI, Yuan-Ting CHEN, Jui-Ni LI, Wai-Pan WU, Shen-Feng TAI
  • Patent number: 10310671
    Abstract: A touch sensor device provided herein includes a sensor pad disposed on a carrier, wherein the sensor pad includes a first electrode, a second electrode, a third electrode and a grounding electrode. The first electrode surrounds a periphery of the second electrode and a first gap is formed between the first electrode and the second electrode. The first electrode surrounds a periphery of the third electrode, and a second gap is formed between the first electrode and the third electrode. The grounding electrode surrounds a periphery of the pad sensor, wherein a third gap is formed between the first electrode and the grounding electrode.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: June 4, 2019
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Cheng-Hung Tsai, Xuexia Cai, Yuan-Ting Chen, Jui-Ni Li, Wai-Pan Wu, Shen-Feng Tai
  • Publication number: 20190073053
    Abstract: A reflected-capacitive touch panel of a wearable electronic device includes a center touch sensing portion composed of a plurality of mutual-capacitance sensors; a border touch sensing portion composed of a plurality of hybrid self-capacitance and mutual-capacitance sensors; and a predetermined bonding area into which channels of the center touch sensing portion and the border touch sensing portion are routed.
    Type: Application
    Filed: December 29, 2017
    Publication date: March 7, 2019
    Inventors: Cheng-Hung Tsai, Yao-Mao Liu, Wen-Juan Li, Jyun-Yan Liu, Li-Lin Liu, Jui-Ni Li, Wai-Pan Wu, Shen-Feng Tai
  • Publication number: 20190042024
    Abstract: A sensor pattern and a capacitive touch screen are provided. The sensor pattern comprises: a plurality of unit blocks, and a first unit block of the unit blocks comprises: a first 1st-type sensor element, a first 2nd-type sensor element, and a second 2nd-type sensor element. The first 1st-type sensor element is disposed on a first patterned layer, having a border trace, two parallel main traces, a bridge, a first cell, and a second cell, wherein the first and second cells are not aligned. The first 2nd-type sensor element is disposed on a second patterned layer, having a main trace and a sub-trace, wherein the main trace surrounds the first cell of the first 1st-type sensor element. The second 2nd-type sensor element is disposed on the second patterned layer, having a main trace and a sub-trace, wherein the main trace surrounds the second cell of the first 1st-type sensor element.
    Type: Application
    Filed: July 30, 2018
    Publication date: February 7, 2019
    Inventors: Cheng-Hung Tsai, Ying-Zhuan Liu, Yuan-Ting Chen, Chin-Yuan Chiang, Jui-Ni Li, Wai Pan Wu, Shen-Feng Tai
  • Publication number: 20180314386
    Abstract: A touch sensor device provided herein includes a sensor pad disposed on a carrier, wherein the sensor pad includes a first electrode, a second electrode, a third electrode and a grounding electrode. The first electrode surrounds a periphery of the second electrode and a first gap is formed between the first electrode and the second electrode. The first electrode surrounds a periphery of the third electrode, and a second gap is formed between the first electrode and the third electrode. The grounding electrode surrounds a periphery of the pad sensor, wherein a third gap is formed between the first electrode and the grounding electrode.
    Type: Application
    Filed: April 28, 2017
    Publication date: November 1, 2018
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Cheng-Hung Tsai, Xuexia Cai, Yuan-Ting Chen, Jui-Ni Li, Wai-Pan Wu, Shen-Feng Tai
  • Patent number: 9817528
    Abstract: A touch sensitive device includes a plurality of first electrodes; a plurality of second electrodes, disposed around the plurality of first electrodes; a plurality of first surrounding pattern that are formed by the plurality of first electrodes and the plurality of second electrodes and a plurality of second surrounding patterns that are formed by the plurality of first electrodes and the plurality of second electrodes. Each of the first surrounding patterns comprises one of the first electrodes that interleaves with one of the second electrodes. Each of the second surrounding patterns comprises one of the second electrodes that is sandwiched between another of the second electrodes and one of the second electrodes.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 14, 2017
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chia-Wei Hu, Wai Pan Wu, Shen-Feng Tai
  • Publication number: 20170010701
    Abstract: A touch panel, including a lower film layer, an upper film layer, a protective layer, and a plurality of sensing units, is provided. The upper film layer is disposed on the lower film layer. The protective layer is disposed on the upper film layer. One of the sensing units includes a first sensing electrode, a second sensing electrode, and a charge-locked electrode. The first sensing electrode is disposed in the lower film layer. The second sensing electrode is disposed in the upper film layer, and at least partially overlaps the first sensing electrode. The charge-locked electrode is disposed in the upper film layer, and at least partially overlaps the second sensing electrode. The first sensing electrode, the second sensing electrode, and the charge-locked electrode do not contact each other. The charge-locked electrode 136 is coupled to or floating-connect to a constant voltage.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 12, 2017
    Inventors: Cheng-Hung Tsai, Wai-Pan Wu, Shen-Feng Tai
  • Patent number: 9471168
    Abstract: A touch sensing device includes a first conductive layer that acts as a common voltage layer in a display mode; and a second conductive layer electrically isolated from the first conductive layer, the second conductive layer having source lines that transfer data to be displayed in the display mode and act as transmitting (TX) electrode lines in a touch sensing mode. The first conductive layer includes RX electrode lines and blocks that are disposed among and separated by the RX electrode lines. The RX electrode lines and the blocks are electrically connected to a common voltage in the display mode.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: October 18, 2016
    Assignee: Himax Technologies Ltd.
    Inventors: Chia-Wei Hu, Yaw-Guang Chang, Shen-Feng Tai, Wai Pan Wu
  • Publication number: 20160103535
    Abstract: A touch sensing device includes a first conductive layer that acts as a common voltage layer in a display mode; and a second conductive layer electrically isolated from the first conductive layer, the second conductive layer having source lines that transfer data to be displayed in the display mode and act as transmitting (TX) electrode lines in a touch sensing mode. The first conductive layer includes RX electrode lines and blocks that are disposed among and separated by the RX electrode lines. The RX electrode lines and the blocks are electrically connected to a common voltage in the display mode.
    Type: Application
    Filed: February 19, 2015
    Publication date: April 14, 2016
    Inventors: Chia-Wei Hu, Yaw-Guang Chang, Shen-Feng Tai, Wai Pan Wu
  • Publication number: 20150378473
    Abstract: A touch sensitive device includes a plurality of first electrodes; a plurality of second electrodes, disposed around the plurality of first electrodes; a plurality of first surrounding pattern that are formed by the plurality of first electrodes and the plurality of second electrodes and a plurality of second surrounding patterns that are formed by the plurality of first electrodes and the plurality of second electrodes. Each of the first surrounding patterns comprises one of the first electrodes that interleaves with one of the second electrodes. Each of the second surrounding patterns comprises one of the second electrodes that is sandwiched between another of the second electrodes and one of the second electrodes.
    Type: Application
    Filed: November 17, 2014
    Publication date: December 31, 2015
    Inventors: Chia-Wei Hu, Wai Pan Wu, Shen-Feng Tai
  • Publication number: 20150153872
    Abstract: A touch sensing device including a plurality of first sensing electrode sets, a plurality of first conductive lines, and a plurality of sensing sets is provided. The first sensing electrode sets are arranged in an array. The first conductive lines are respectively connected to the first sensing electrode sets. The sensing sets are capacitively coupled to the first sensing electrode sets. Each of the first sensing electrode sets is capacitively coupled to at least two of the sensing sets. One of each of the first sensing electrode sets and each of the sensing sets is a signal transmitter, and the other of each of the first sensing electrode sets and each of the sensing sets is a signal receiver.
    Type: Application
    Filed: March 14, 2014
    Publication date: June 4, 2015
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chia-Wei Hu, Shen-Feng Tai, Wai-Pan Wu, Chia-Ling Lo, Jui-Ni Li
  • Patent number: 9013434
    Abstract: A touch display panel, including first electrode patterns, second electrode patterns, active elements, third electrode patterns and fourth electrode patterns is provided. The second electrode patterns and the first electrode pattern are set to form pixel areas. Each of the active elements is disposed in one of the pixel areas and electrically connected to the corresponding first electrode pattern and second electrode pattern. The third electrode patterns are arranged along a direction of an arrangement direction of the second electrode patterns and divide the second electrode patterns into groups, wherein each third pattern covers columns of the pixel areas. The fourth electrode patterns are electrically insulated to the third electrode patterns. Each fourth electrode pattern is disposed in one of the pixel areas and electrically connected to the corresponding active element. A driving method of a touch display panel is also provided.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: April 21, 2015
    Assignee: Himax Technologies Limited
    Inventors: Chia-Wei Hu, Yaw-Guang Chang, Shen-Feng Tai, Wai-Pan Wu
  • Publication number: 20140368449
    Abstract: A touch display panel, including first electrode patterns, second electrode patterns, active elements, third electrode patterns and fourth electrode patterns is provided. The second electrode patterns and the first electrode pattern are set to form pixel areas. Each of the active elements is disposed in one of the pixel areas and electrically connected to the corresponding first electrode pattern and second electrode pattern. The third electrode patterns are arranged along a direction of an arrangement direction of the second electrode patterns and divide the second electrode patterns into groups, wherein each third pattern covers columns of the pixel areas. The fourth electrode patterns are electrically insulated to the third electrode patterns. Each fourth electrode pattern is disposed in one of the pixel areas and electrically connected to the corresponding active element. A driving method of a touch display panel is also provided.
    Type: Application
    Filed: November 5, 2013
    Publication date: December 18, 2014
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chia-Wei Hu, Yaw-Guang Chang, Shen-Feng Tai, Wai-Pan Wu
  • Patent number: 7848477
    Abstract: A shift register including shift register units substantially cascaded is disclosed. Each shift register unit is controlled by first and second clock signals opposite to each other for generating an output signal. Each shift register unit includes first and second switch devices and first and second devices. The first switch device provides the output signal through an output node. The first driving device drives the first switch device according to a first input signal to activate the output signal. The second driving device provides a first voltage signal, according to the first clock signal, to drive the first switch device and de-activate the output signal. When the first switch device de-activates the output signal, the second switch device provides the second voltage signal to the output node according to the second clock signal. A level of the first voltage signal is lower than a level of the second voltage signal.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: December 7, 2010
    Assignee: Au Optronics Corp.
    Inventors: Kuo-Hsing Cheng, Wai-Pan Wu, Kuo-Hsien Lee, Chun-Huai Li