Patents by Inventor Shen-Feng Tai

Shen-Feng Tai 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: 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
  • Patent number: 9766728
    Abstract: An exemplary method for determining a position of a touch event on a touch panel includes at least the following steps: scanning the touch panel by utilizing a first touch event detection threshold, and accordingly obtaining touch signal information corresponding to the touch event on the touch panel; determining if the touch panel is in a specific touch mode according to the touch signal information; and when it is determined that the touch panel is in the specific touch mode, setting a second touch event detection threshold that is different from the first touch event detection threshold, and scanning the touch panel by utilizing the second touch event detection threshold to obtain the position of the touch event.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: September 19, 2017
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chin-Lin Lee, Shen-Feng Tai, Jui-Min Liu, Cheng-Feng Hsieh
  • Patent number: 9582109
    Abstract: A method for detecting noise of a touch panel and performing signal control is provided, where the method may determine how many cycles of frame data are influenced by noise, may determine whether the frame data is influenced by noise by determining whether a number of cycles influenced by noise is greater than a first threshold value or not, and may determine whether a number of continuous frame data determined to be influenced by noise is greater than a second threshold value to generate a determination result. Finally, the method may determine whether to adjust a frequency of the transmitting signals according to the determination result.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: February 28, 2017
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Li-Lin Liu, Chung-Wen Chang, Shen-Feng Tai, Jui-Min Liu
  • 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: 9501185
    Abstract: An active array of a capacitive touch panel includes a plurality of first electrodes, a plurality of second electrodes and a plurality of first auxiliary electrodes, where the first electrodes are connected to a scan signal transmitting circuit of the capacitive touch panel, and are used for receiving a plurality of scan signals, respectively; the second electrodes are connected to a detecting circuit of the capacitive touch panel; and the first electrodes and the first auxiliary electrodes are fabricated in a same metal layer, and the first electrodes are not connected to the first auxiliary electrodes.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: November 22, 2016
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chia-Wei Hu, Jui-Ni Li, 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
  • Patent number: 9310945
    Abstract: A touch-sensing display device comprises a plurality of row electrodes and column electrodes, a capacitance detector, detecting first capacitance-variation values of the row electrodes and second capacitance-variation values of the column electrodes, and detecting third capacitance-variation values of each intersection of the row electrodes and the column electrodes. The processor counts the first number of the first and second capacitance-variation values, exceeding a first threshold, counts the second number of the first and second capacitance-variation values up to a maximum capacitor-variation value, and counts the third number of the third capacitance values, exceeding a second threshold. The processor makes the touch-sensing display device enter a bending mode when the first and second numbers are over a first predetermined number and a second predetermined number respectively, and the third number is below the first number.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: April 12, 2016
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jui-Ming Liu, Li-Lin Liu, Chung-Wen Chang, Shen-Feng Tai
  • Patent number: 9262009
    Abstract: A touch device and method for detecting a touch point thereof are provided. The method includes: detecting a plurality of first touch values, second touch values and third touch values corresponding to a plurality of touch regions of a touch panel, respectively, during a first frame period, a second frame period and a third frame period; performing a value obtaining operation to output a median of the first touch value, the second touch value and the third touch value to which each of the touch regions correspond; and determining a real touch point according a touch threshold and the first touch values, the second touch values and the third touch values outputted by the value obtaining operation.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: February 16, 2016
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jui-Ming Liu, Li-Lin Liu, Chung-Wen Chang, Shen-Feng Tai
  • Patent number: 9244579
    Abstract: A touch display apparatus and a touch mode switching method thereof are provided. A touch mode of a touch panel is switched according to a touch track and a touch area of an input tool.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: January 26, 2016
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Li-Lin Liu, Shen-Feng Tai, Chung-Wen Chang, Jui-Min Liu
  • 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