Patents by Inventor Chang-Ching Chiang

Chang-Ching Chiang 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: 20200219941
    Abstract: A capacitive touch panel is disclosed. The capacitive touch panel includes a plurality of pixels. A laminated structure of each pixel includes a substrate, a display layer, a thin-film encapsulation layer and a conductive layer from bottom to top. The display layer is disposed above the substrate. The thin-film encapsulation layer is disposed above the display layer with respect to the substrate. The thin-film encapsulation layer includes alternately stacked organic material layer and inorganic material layer. The conductive layer is disposed above the thin-film encapsulation layer or within the thin-film encapsulation layer. The conductive layer is electrically connected to a connection pad disposed above a non-display area of the display layer.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 9, 2020
    Inventors: CHANG-CHING CHIANG, KUN-PEI LEE
  • Publication number: 20190129534
    Abstract: An in-cell capacitive touch panel applied to a passive matrix light-emitting diode (LED) display is disclosed. The in-cell capacitive touch panel includes a plurality of pixels and a first touch electrode. A laminated structure of each pixel includes a substrate, a first conductive layer, a second conductive layer, and a LED layer. The substrate is disposed at one side of the pixel. The first conductive layer is disposed above the substrate and arranged along a first direction. The second conductive layer is disposed above the first conductive layer and arranged along a second direction. The LED layer is disposed between overlapping regions of the first conductive layer and the second conductive layer to form the pixel. The first touch electrode is disposed between a first pixel and a second pixel of the plurality of pixels. The first pixel and the second pixel are adjacent.
    Type: Application
    Filed: October 24, 2018
    Publication date: May 2, 2019
    Inventor: Chang-Ching CHIANG
  • Publication number: 20190129555
    Abstract: An in-cell capacitive touch panel, applied to an active matrix light-emitting diode (LED) display, includes pixels and at least one touch electrode. A laminated structure of each pixel includes a substrate, a first conductive layer˜a fourth conductive layer, a transistor layer and a LED layer. The substrate is disposed at one side of the pixel. The first conductive layer is disposed above the substrate to form scan lines. The transistor layer is disposed above the substrate. The second conductive layer is disposed above the substrate to form data lines. The third conductive layer is disposed above the transistor layer. The LED layer is disposed above the third conductive layer. The fourth conductive layer is disposed above the LED layer. The at least one touch electrode is disposed in a space that the first conductive layer˜the fourth conductive layer and the LED layer are not disposed.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 2, 2019
    Inventor: Chang-Ching CHIANG
  • Patent number: 10162994
    Abstract: A capacitive fingerprint sensing apparatus includes sensing electrodes, a sensing driver and a processing module. Under a first self-capacitive sensing mode, the sensing driver combines M adjacent sensing electrodes to form a first sensing electrode set to perform a first self-capacitive sensing to obtain a first self-capacitive fingerprint sensing signal; under a second self-capacitive sensing mode, the sensing driver combines N adjacent sensing electrodes to form a second sensing electrode set to perform a second self-capacitive sensing to obtain a second self-capacitive fingerprint sensing signal. M and N are positive integers larger than 1. The processing module generates a first self-capacitive fingerprint pattern and a second self-capacitive fingerprint pattern according to first self-capacitive fingerprint sensing signal and second self-capacitive fingerprint sensing signal and combines them into a third self-capacitive fingerprint pattern.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: December 25, 2018
    Assignee: Raydium Semiconductor Corporation
    Inventors: Chang-Ching Chiang, Kun-Pei Lee
  • Publication number: 20180329553
    Abstract: An in-cell touch panel is disclosed. The in-cell touch panel includes a plurality of pixels. A laminated structure of each pixel includes a substrate, an encapsulation layer, an organic emissive layer, a first conductive layer and a second conductive layer. The encapsulation layer is disposed opposite to the substrate. The organic emissive layer is formed between the substrate and the encapsulation layer. The first conductive layer is formed between the organic emissive layer and the encapsulation layer. The second conductive layer is formed between the organic emissive layer and the encapsulation layer.
    Type: Application
    Filed: May 11, 2018
    Publication date: November 15, 2018
    Inventors: Chang-Ching CHIANG, Kun-Pei LEE
  • Publication number: 20180321765
    Abstract: A capacitive touch panel is disclosed. The capacitive touch panel includes a plurality of pixels. A laminated structure of each pixel includes a substrate, a display layer, a thin-film encapsulation layer and a conductive layer from bottom to top. The display layer is disposed above the substrate. The thin-film encapsulation layer opposite to the substrate is disposed above the display layer. The thin-film encapsulation layer includes alternately stacked organic material layer and inorganic material layer. The conductive layer is disposed above the display layer. The conductive layer is electrically connected to a contact on the display layer through a via formed in the thin-film encapsulation layer.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 8, 2018
    Inventors: Chang-Ching CHIANG, Kun-Pei LEE
  • Publication number: 20180299990
    Abstract: A capacitive touch panel is disclosed. The capacitive touch panel includes a plurality of pixels. A laminated structure of each pixel includes a substrate, a self-emissive layer, an encapsulation layer, a loading reduce layer and a conductive layer from bottom to top. The self-emissive layer is disposed above the substrate. The encapsulation layer opposite to the substrate is disposed above the self-emissive layer. The loading reduce layer is disposed above the self-emissive layer. The conductive layer is disposed above the loading reduce layer.
    Type: Application
    Filed: April 13, 2018
    Publication date: October 18, 2018
    Inventors: Chang-Ching CHIANG, Chen-Wei YANG
  • Patent number: 10055069
    Abstract: An in-cell touch panel and its trace layout are disclosed. The in-cell touch panel includes a plurality of pixels. Each pixel has a laminated structure bottom-up including a substrate, a TFT layer, a liquid crystal layer, a color filter layer, and a glass layer. The TFT layer is disposed on the substrate. A first conductive layer and a second conductive layer are integrated in the TFT layer. The liquid crystal layer is disposed on the TFT layer. The color filter layer is disposed on the liquid crystal layer. The glass layer is disposed on the color filter layer. The design of touch sensing electrodes and their trace layout in the in-cell touch panel of the application is simple and it can effectively reduce cost and reduce the RC loading of a common electrode.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: August 21, 2018
    Assignee: Raydium Semiconductor Corporation
    Inventors: Kun-Pei Lee, Yi-Ying Lin, Chang-Ching Chiang
  • Patent number: 10055632
    Abstract: A capacitive fingerprint sensing apparatus includes sensing electrodes, a sensing driver, and a processing module. In a self-capacitive sensing mode, the sensing driver performs self-capacitive sensing on at least one sensing electrode to obtain a first fingerprint sensing signal. In a mutual-capacitive sensing mode, the sensing driver performs mutual-capacitive sensing on at least two adjacent sensing electrodes to obtain a second fingerprint sensing signal. The processing module generates a first fingerprint pattern and a second fingerprint pattern according to the first fingerprint sensing signal and the second fingerprint sensing signal and combines the first fingerprint pattern and the second fingerprint pattern into a combined fingerprint pattern. The resolution of the combined fingerprint pattern along at least one direction is larger than that of the first fingerprint pattern and the second fingerprint pattern along the at least one direction.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: August 21, 2018
    Assignee: Raydium Semiconductor Corporation
    Inventors: Chang-Ching Chiang, Kun-Pei Lee
  • Patent number: 10043048
    Abstract: The capacitive fingerprint sensing apparatus and capacitive fingerprint sensing method of the invention perform fingerprint sensing through self-capacitive sensing technology and mutual-capacitive sensing technology respectively and combine the self-capacitive fingerprint pattern and the mutual-capacitive fingerprint pattern into a synthesized fingerprint pattern. Therefore, the capacitive fingerprint sensing apparatus and capacitive fingerprint sensing method of the invention can effectively increase the capacity sensed by the unit sensing electrode without decreasing its high resolution. As a result, not only the noise interference can be reduced to increase the accuracy of fingerprint recognition, but also the number of signal traces can be also reduced to simplify the circuit structure and save the chip area.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: August 7, 2018
    Assignee: Raydium Semiconductor Corporation
    Inventors: Chang-Ching Chiang, Yu Kuo Huang
  • Patent number: 9983750
    Abstract: An in-cell mutual-capacitive touch panel is disclosed. The in-cell mutual-capacitive touch panel includes a plurality of pixels. A laminated structure of each pixel includes a substrate, a TFT layer, a liquid crystal layer, a color filter layer and a glass layer. The TFT layer is disposed on the substrate. A first conductive layer and a common electrode are disposed in the TFT layer. The first conductive layer is arranged in mesh type or only arranged along a first direction in an active area of the in-cell mutual-capacitive touch panel. The liquid crystal layer is disposed above the TFT layer. The color filter layer is disposed above the liquid crystal layer. The glass layer is disposed above the color filter layer.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: May 29, 2018
    Assignee: Raydium Semiconductor Corporation
    Inventors: Kun-Pei Lee, Yi-Ying Lin, Chang-Ching Chiang, Yu-Chin Hsu
  • Patent number: 9830494
    Abstract: A capacitive fingerprint sensing apparatus including sensing electrodes, a scanning driver, a sensing driver and a processing module is disclosed. In a self-capacitive sensing mode, the scanning driver drives a pair of adjacent scanning lines among the scanning lines and the sensing driver performs self-capacitive sensing through at least one sensing line among the sensing lines to obtain a first fingerprint sensing signal. In a mutual-capacitive sensing mode, the scanning driver drives the pair of adjacent scanning lines and the sensing driver performs mutual-capacitive sensing through at least two adjacent sensing lines among the sensing lines to obtain a second fingerprint sensing signal. The processing module generates a first fingerprint pattern and a second fingerprint pattern according to the first fingerprint sensing signal and the second fingerprint sensing signal and combines the first fingerprint pattern and the second fingerprint pattern into a combined fingerprint pattern.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: November 28, 2017
    Assignee: Raydium Semiconductor Corporation
    Inventors: Chang-Ching Chiang, Kun-Pei Lee
  • Publication number: 20170206394
    Abstract: A capacitive fingerprint sensing apparatus includes sensing electrodes, a sensing driver and a processing module. Under a first self-capacitive sensing mode, the sensing driver combines M adjacent sensing electrodes to form a first sensing electrode set to perform a first self-capacitive sensing to obtain a first self-capacitive fingerprint sensing signal; under a second self-capacitive sensing mode, the sensing driver combines N adjacent sensing electrodes to form a second sensing electrode set to perform a second self-capacitive sensing to obtain a second self-capacitive fingerprint sensing signal. M and N are positive integers larger than 1. The processing module generates a first self-capacitive fingerprint pattern and a second self-capacitive fingerprint pattern according to first self-capacitive fingerprint sensing signal and second self-capacitive fingerprint sensing signal and combines them into a third self-capacitive fingerprint pattern.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 20, 2017
    Inventors: Chang-Ching Chiang, Kun-Pei Lee
  • Publication number: 20170115812
    Abstract: A capacitive force sensing touch panel is disclosed. The capacitive force sensing touch panel includes pixels. A laminated structure of each pixel includes a first substrate, a TFT layer, a first conductive layer, a second conductive layer, a third conductive layer and a second substrate. The TFT layer is disposed above the first substrate. The first conductive layer is disposed above the TFT layer. The second conductive layer is disposed above the first conductive layer. The third conductive layer corresponds to the second conductive layer and the third conductive layer is disposed above the second conductive layer. The second substrate is disposed above the third conductive layer.
    Type: Application
    Filed: October 26, 2016
    Publication date: April 27, 2017
    Inventors: Yi-Ying Lin, Hsin-Wei Shieh, Chang-Ching Chiang, Kun-Pei Lee
  • Publication number: 20170075493
    Abstract: A capacitive force sensing touch panel is disclosed. The capacitive force sensing touch panel includes pixels. A laminated structure of each pixel includes a first substrate, an anode layer, an OLED layer, a cathode layer, a second substrate, a first conductive layer and a second conductive layer. The anode layer is disposed above the first substrate. The OLED layer is disposed above the anode layer. The cathode layer is disposed above the OLED layer. The second substrate is disposed above the cathode layer. The first conductive layer and the second conductive layer are disposed on a first plane and a second plane above the OLED layer respectively and selectively driven to be a touch sensing electrode or force sensing electrode.
    Type: Application
    Filed: August 22, 2016
    Publication date: March 16, 2017
    Inventors: Kun-Pei LEE, Chen-Wei Yang, Hsin-Wei Shieh, Yi-Ying Lin, Chang-Ching Chiang
  • Publication number: 20170061194
    Abstract: A capacitive fingerprint sensing apparatus includes sensing electrodes, a sensing driver, and a processing module. In a self-capacitive sensing mode, the sensing driver performs self-capacitive sensing on at least one sensing electrode to obtain a first fingerprint sensing signal. In a mutual-capacitive sensing mode, the sensing driver performs mutual-capacitive sensing on at least two adjacent sensing electrodes to obtain a second fingerprint sensing signal. The processing module generates a first fingerprint pattern and a second fingerprint pattern according to the first fingerprint sensing signal and the second fingerprint sensing signal and combines the first fingerprint pattern and the second fingerprint pattern into a combined fingerprint pattern. The resolution of the combined fingerprint pattern along at least one direction is larger than that of the first fingerprint pattern and the second fingerprint pattern along the at least one direction.
    Type: Application
    Filed: August 5, 2016
    Publication date: March 2, 2017
    Inventors: Chang-Ching Chiang, Kun-Pei Lee
  • Publication number: 20170045992
    Abstract: A capacitive force sensing touch panel is disclosed. The capacitive force sensing touch panel includes a plurality of pixels. A laminated structure of each pixel includes a first plane, a second plane, at least a first electrode and at least a second electrode. The second plane is disposed above the first plane and parallel to the first plane. The at least one first electrode is disposed on the first plane. The at least one second electrode is disposed on the second plane. The at least one first electrode and the at least one second electrode are selectively driven as touch sensing electrodes or force sensing electrodes respectively.
    Type: Application
    Filed: August 10, 2016
    Publication date: February 16, 2017
    Inventors: Kun-Pei Lee, Yi-Ying Lin, Hsin-Wei Shieh, Chang-Ching Chiang, Yu-Chin Hsu
  • Publication number: 20170024075
    Abstract: An in-cell touch panel is disclosed. The in-cell touch panel includes a plurality of pixels. A laminated structure of each pixel includes a substrate, an organic emissive layer, a spacer and a first conductive layer. The organic emissive layer is formed above the substrate. The spacer is formed above the substrate with a specific distribution density. The first conductive layer is formed above the organic emissive layer opposite to the substrate, wherein at least a part of the first conductive layer is not formed above the spacer.
    Type: Application
    Filed: July 11, 2016
    Publication date: January 26, 2017
    Inventors: Chang-Ching Chiang, Yi-Ying Lin, Kun-Pei Lee
  • Publication number: 20170024598
    Abstract: A capacitive fingerprint sensing apparatus including sensing electrodes, a scanning driver, a sensing driver and a processing module is disclosed. In a self-capacitive sensing mode, the scanning driver drives a pair of adjacent scanning lines among the scanning lines and the sensing driver performs self-capacitive sensing through at least one sensing line among the sensing lines to obtain a first fingerprint sensing signal. In a mutual-capacitive sensing mode, the scanning driver drives the pair of adjacent scanning lines and the sensing driver performs mutual-capacitive sensing through at least two adjacent sensing lines among the sensing lines to obtain a second fingerprint sensing signal. The processing module generates a first fingerprint pattern and a second fingerprint pattern according to the first fingerprint sensing signal and the second fingerprint sensing signal and combines the first fingerprint pattern and the second fingerprint pattern into a combined fingerprint pattern.
    Type: Application
    Filed: July 11, 2016
    Publication date: January 26, 2017
    Inventors: Chang-Ching Chiang, Kun-Pei Lee
  • Publication number: 20170024077
    Abstract: An in-cell touch panel driving method for driving an in-cell touch panel is disclosed. The in-cell touch panel driving method includes a step of driving a touch sensing mode and a display mode of the in-cell touch panel in a time-sharing way and operating the in-cell touch panel in the touch sensing mode during a blanking interval of a display period of the in-cell touch panel.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Inventors: Yi-Ying Lin, Kun-Pei Lee, Chen-Wei Yang, Chang-Ching Chiang