Patents by Inventor Chen-Kai Chiu
Chen-Kai Chiu 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).
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Publication number: 20230260471Abstract: The present invention provides improved driving methods for four particle electrophoretic displays that improves the performance of such displays when they are deployed in low temperature environments and the displays are required to be updated when positioned vertically (i.e., the driving electric fields are substantially perpendicular to the direction of Earth's gravity). Methods are provided for displaying each of the colors at each pixel, as desired, with minimal interference (contamination) from the other particles.Type: ApplicationFiled: April 25, 2023Publication date: August 17, 2023Inventors: NING-WEI JAN, CHEN-KAI CHIU, FENG-SHOU LIN, CHIH-YU CHENG
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Patent number: 11688357Abstract: The present invention provides improved driving methods for four particle electrophoretic displays that improves the performance of such displays when they are deployed in low temperature environments and the displays are required to be updated when positioned vertically (i.e., the driving electric fields are substantially perpendicular to the direction of Earth's gravity). Methods are provided for displaying each of the colors at each pixel, as desired, with minimal interference (contamination) from the other particles.Type: GrantFiled: April 28, 2022Date of Patent: June 27, 2023Assignee: E Ink California, LLCInventors: Ning-Wei Jan, Chen-Kai Chiu, Feng-Shou Lin, Chih-Yu Cheng
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Publication number: 20230104793Abstract: The present invention provides four-particle electrophoretic displays with improved driving methods to achieve better color separation between adjacent pixel electrodes. The driving methods improve the color state performance when a first pixel is displaying a mixed state of a first highly-charged particle and a second lower-charged particle of the opposite polarity, while a neighboring pixel is displaying a state of a second highly-charged particle having the opposite polarity to the first highly-charged particle. The particles can be, for example, all reflective or one type of particle can be partially light transmissive.Type: ApplicationFiled: November 30, 2022Publication date: April 6, 2023Inventors: Chih-Yu CHENG, Craig LIN, Ning-Wei JAN, Chen-Kai CHIU, Feng-Shou LIN
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Patent number: 11580920Abstract: The present invention provides improved driving methods for four particle electrophoretic displays. The driving methods improve the color state performance when a first pixel is displaying a mixed state of a first highly-charged particle and a second lower-charged particle of the opposite polarity, while a neighboring pixel is displaying a state of a second highly-charged particle having the opposite polarity to the first highly-charged particle. The particles can be, for example, all reflective or one type of particle can be partially light transmissive.Type: GrantFiled: May 24, 2022Date of Patent: February 14, 2023Assignee: E Ink California, LLCInventors: Chih-Yu Cheng, Craig Lin, Ning-Wei Jan, Chen-Kai Chiu, Feng-Shou Lin
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Publication number: 20220383828Abstract: The present invention provides improved driving methods for four particle electrophoretic displays. The driving methods improve the color state performance when a first pixel is displaying a mixed state of a first highly-charged particle and a second lower-charged particle of the opposite polarity, while a neighboring pixel is displaying a state of a second highly-charged particle having the opposite polarity to the first highly-charged particle. The particles can be, for example, all reflective or one type of particle can be partially light transmissive.Type: ApplicationFiled: May 24, 2022Publication date: December 1, 2022Inventors: Chih-Yu CHENG, Craig LIN, NING-WEI JAN, Chen-Kai CHIU, Feng-Shou LIN
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Patent number: 11500261Abstract: An electrophoretic display and a driving method thereof are provided. The electrophoretic display includes a display panel and a driving circuit. The display panel includes an electrophoretic unit and a driving substrate. The electrophoretic unit includes a plurality of electrophoretic particles. The driving substrate is disposed below the electrophoretic unit. The driving circuit is coupled to the driving substrate. The driving circuit sequentially provides a first reset signal and a second reset signal to the driving substrate during a reset period to reset the plurality of electrophoretic particles. The first reset signal sequentially includes a first sub-balanced signal and a first sub-mixed signal. The second reset signal sequentially includes a second sub-balanced signal and a second sub-mixed signal.Type: GrantFiled: March 12, 2020Date of Patent: November 15, 2022Assignee: E Ink Holdings Inc.Inventors: Hsin-I Wu, Chien-Hung Chen, Chen-Kai Chiu, Chih-Yu Cheng
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Publication number: 20220351691Abstract: The present invention provides improved driving methods for four particle electrophoretic displays that improves the performance of such displays when they are deployed in low temperature environments and the displays are required to be updated when positioned vertically (i.e., the driving electric fields are substantially perpendicular to the direction of Earth's gravity). Methods are provided for displaying each of the colors at each pixel, as desired, with minimal interference (contamination) from the other particles.Type: ApplicationFiled: April 28, 2022Publication date: November 3, 2022Inventors: NING-WEI JAN, CHEN-KAI CHIU, FENG-SHOU LIN, CHIH-YU CHENG
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Patent number: 11151951Abstract: An electro-phoretic display including a display panel and a driving circuit. The display panel is configured to display image frames. The driving circuit is coupled to the display panel. The driving circuit is configured to drive the display panel to display the image frames according to a driving signal. The driving signal includes a first pulse and a second pulse. A driving period of the driving signal includes a first stage, a second stage and a driving stage in sequence. The first pulse is located before the driving stage, and the second pulse is located in the second stage. The pulse width of the first pulse is larger than that of the second pulse. In addition, a driving method of an electro-phoretic display is also provided.Type: GrantFiled: December 27, 2018Date of Patent: October 19, 2021Assignee: E Ink Holdings Inc.Inventors: Feng-Shou Lin, Chen-Kai Chiu, Chih-Yu Cheng
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Publication number: 20200379312Abstract: An electrophoretic display and a driving method thereof are provided. The electrophoretic display includes a display panel and a driving circuit. The display panel includes an electrophoretic unit and a driving substrate. The electrophoretic unit includes a plurality of electrophoretic particles. The driving substrate is disposed below the electrophoretic unit. The driving circuit is coupled to the driving substrate. The driving circuit sequentially provides a first reset signal and a second reset signal to the driving substrate during a reset period to reset the plurality of electrophoretic particles. The first reset signal sequentially includes a first sub-balanced signal and a first sub-mixed signal. The second reset signal sequentially includes a second sub-balanced signal and a second sub-mixed signal.Type: ApplicationFiled: March 12, 2020Publication date: December 3, 2020Applicant: E Ink Holdings Inc.Inventors: Hsin-I Wu, Chien-Hung Chen, Chen-Kai Chiu, Chih-Yu Cheng
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Patent number: 10679571Abstract: An electronic paper display including an electronic paper display panel and a driver circuit is provided. The electronic paper display panel includes a plurality of pixels. The driver circuit is coupled to the electronic paper display panel. The driver circuit drives a target pixel of the pixels to display a color by using a driving signal. The driving signal includes a reset period, an interleaving period, and a display period. A voltage of the driving signal is zero during the interleaving period. In addition, a method for driving an electronic paper display panel is also provided.Type: GrantFiled: February 11, 2018Date of Patent: June 9, 2020Assignee: E Ink Holdings Inc.Inventors: Chen-Kai Chiu, Hsin-I Wu, Feng-Shou Lin
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Patent number: 10591800Abstract: An electrophoretic display and a driving method thereof are provided. The electrophoretic display includes a display panel and a driving circuit. The display panel includes an electrophoretic unit and a driving substrate. The driving method includes: providing a resetting signal to the driving substrate to reset at least one of a first electrophoretic particle and a second electrophoretic particle in the electrophoretic unit; and providing a driving signal to the driving substrate to drive a third electrophoretic particle in the electrophoretic unit, wherein the driving signal includes a first driving period and a second driving period, and the first driving period occurs before the second driving period. In the first driving period, the driving signal includes a plurality of first driving pulses and a plurality of second driving pulses. In the second driving period, the driving signal includes a plurality of third driving pulses.Type: GrantFiled: December 5, 2018Date of Patent: March 17, 2020Assignee: E Ink Holdings Inc.Inventors: Chen-Kai Chiu, Feng-Shou Lin, Chih-Yu Cheng
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Publication number: 20190212626Abstract: An electrophoretic display and a driving method thereof are provided. The electrophoretic display includes a display panel and a driving circuit. The display panel includes an electrophoretic unit and a driving substrate. The driving method includes: providing a resetting signal to the driving substrate to reset at least one of a first electrophoretic particle and a second electrophoretic particle in the electrophoretic unit; and providing a driving signal to the driving substrate to drive a third electrophoretic particle in the electrophoretic unit, wherein the driving signal includes a first driving period and a second driving period, and the first driving period occurs before the second driving period. In the first driving period, the driving signal includes a plurality of first driving pulses and a plurality of second driving pulses. In the second driving period, the driving signal includes a plurality of third driving pulses.Type: ApplicationFiled: December 5, 2018Publication date: July 11, 2019Applicant: E Ink Holdings Inc.Inventors: Chen-Kai Chiu, Feng-Shou Lin, Chih-Yu Cheng
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Publication number: 20190213959Abstract: An electro-phoretic display including a display panel and a driving circuit. The display panel is configured to display image frames. The driving circuit is coupled to the display panel. The driving circuit is configured to drive the display panel to display the image frames according to a driving signal. The driving signal includes a first pulse and a second pulse. A driving period of the driving signal includes a first stage, a second stage and a driving stage in sequence. The first pulse is located before the driving stage, and the second pulse is located in the second stage. The pulse width of the first pulse is larger than that of the second pulse. In addition, a driving method of an electro-phoretic display is also provided.Type: ApplicationFiled: December 27, 2018Publication date: July 11, 2019Applicant: E Ink Holdings Inc.Inventors: Feng-Shou Lin, Chen-Kai Chiu, Chih-Yu Cheng
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Publication number: 20180240412Abstract: An electronic paper display including an electronic paper display panel and a driver circuit is provided. The electronic paper display panel includes a plurality of pixels. The driver circuit is coupled to the electronic paper display panel. The driver circuit drives a target pixel of the pixels to display a color by using a driving signal. The driving signal includes a reset period, an interleaving period, and a display period. A voltage of the driving signal is zero during the interleaving period. In addition, a method for driving an electronic paper display panel is also provided.Type: ApplicationFiled: February 11, 2018Publication date: August 23, 2018Applicant: E Ink Holdings Inc.Inventors: Chen-Kai Chiu, Hsin-I Wu, Feng-Shou Lin