Patents by Inventor Ping-Yen Chen
Ping-Yen Chen 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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Patent number: 11614644Abstract: A display device includes a view angle switching module and a display module. The view angle switching module includes a first polarizer and a view angle adjustment layer. The display module and the view angle switching module are overlapped. The display module includes a display layer and a second polarizer. The view angle adjustment layer is located between the first polarizer and the second polarizer. An average degree of polarization of the first polarizer for light with a wavelength falling within a first wavelength band is less than an average degree of polarization of the second polarizer for the light with the wavelength falling within the first wavelength band. The display device may provide a privacy function and images with good image quality.Type: GrantFiled: February 22, 2021Date of Patent: March 28, 2023Assignee: Coretronic CorporationInventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang, Yang-Ching Lin
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Patent number: 11604373Abstract: The invention relates to an electrically controllable viewing angle switch device and a display apparatus. The switch device includes a first substrate, a second substrate, a liquid crystal layer, spacers, a first alignment film, a second alignment film, a first polarizer, and a second polarizer and has a light transmission region. The second substrate is disposed opposite to the first substrate. The liquid crystal layer and the spacers are located between the first substrate and the second substrate in the light transmission region. The spacers are fixed on the first or second substrate. The first polarizer and the second polarizer are disposed on opposite sides of the liquid crystal layer. The axial directions of the transmission axis of the first polarizer and the transmission axis of the second polarizer are parallel or perpendicular to the alignment direction of the first alignment film and the second alignment film.Type: GrantFiled: April 21, 2021Date of Patent: March 14, 2023Assignee: Coretronic CorporationInventors: Yang-Ching Lin, Chung-Yang Fang, Ping-Yen Chen
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Patent number: 11573438Abstract: An electrically controlled viewing angle switching device including a first electrode, a second electrode, a liquid crystal layer, multiple dye molecules, and a polarizer is provided. The second electrode is disposed opposite to the first electrode. The liquid crystal layer is disposed between the first electrode and the second electrode and has an optical axis. The dye molecules are dispersedly disposed in the liquid crystal layer. Each of the dye molecules is arranged corresponding to the optical axis of the liquid crystal layer. The polarizer is stacked on the liquid crystal layer. The axial direction of the optical axis of the liquid crystal layer is perpendicular to the axial direction of the transmission axis of the polarizer. A display device using the electrically controlled viewing angle switching device is also provided.Type: GrantFiled: April 20, 2021Date of Patent: February 7, 2023Assignee: Coretronic CorporationInventors: Ping-Yen Chen, Chung-Yang Fang
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Publication number: 20220397714Abstract: Provided is a display apparatus including a circuit substrate, a light-emitting layer, a polarizing layer, a quarter waveplate, and a bandpass polarizing reflective layer. The light-emitting layer includes a plurality of first light-emitting structures. The first light-emitting structures have a first peak emission wavelength. The polarizing layer is located on a side of the light-emitting layer away from the circuit substrate. The quarter waveplate is disposed between the polarizing layer and the light-emitting layer and overlaps the light-emitting layer and the polarizing layer. The bandpass polarizing reflective layer is disposed between the quarter waveplate and the light-emitting layer and includes a first bandpass polarizing reflective pattern overlapping the first light-emitting structures. A reflectance of the bandpass polarizing reflective pattern for light with a wavelength in a first wavelength range is greater than 20%. The first wavelength range is the peak emission wavelength ±10 nm.Type: ApplicationFiled: May 13, 2022Publication date: December 15, 2022Applicant: Coretronic CorporationInventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang
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Patent number: 11526038Abstract: A viewing angle limiting device, including a polymer substrate and a plurality of dye molecules, is provided. The dye molecules are dispersedly arranged in the polymer substrate. The dye molecules have a first absorption coefficient in a thickness direction of the polymer substrate. The dye molecules have a second absorption coefficient in a direction perpendicular to the thickness direction. A ratio of the first absorption coefficient to the second absorption coefficient is between 10 and 1000. A manufacturing method of the viewing angle limiting device and a display device including the viewing angle limiting device are also provided. The display device, the viewing angle limiting device, and the manufacturing method thereof provided by the invention have a large viewing angle filtering effect and have higher light transmittance in a viewing angle direction.Type: GrantFiled: April 28, 2021Date of Patent: December 13, 2022Assignee: Coretronic CorporationInventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang, Yang-Ching Lin
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Patent number: 11472961Abstract: A method of removing metal ions is provided, which includes contacting a metal removal composition with a solution containing metal ions for removing the metal ions from the solution, wherein the metal removal composition includes a polymer with a chemical structure of: wherein Q is a quinoline-based group, n=90˜450, o=10˜50, and p=0˜20. The metal removal composition has a type of fiber or film. In addition, the metal removal composition has a porosity of 60% to 90%.Type: GrantFiled: April 6, 2020Date of Patent: October 18, 2022Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Min-Fei Tsai, Feng-Jen Tsai, Ping-Yen Chen, Yen-Cheng Li, Li-Han Chung
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Publication number: 20220276522Abstract: A display apparatus is provided, including at least one viewing angle limiting device, a display panel, and a light polarization converter disposed between the at least one viewing angle limiting device and the display panel. The light polarization converter includes first regions and second regions alternately arranged. Light beams passing through the first regions and the second regions respectively have a first light polarization direction and a second light polarization direction. The light polarization converter is overlapped with the at least one viewing angle limiting device and the display panel. The viewing angle limiting device includes light-absorbing molecules. The light-absorbing molecules have a first absorption coefficient in a thickness direction of the viewing angle limiting device and a second absorption coefficient in a direction perpendicular to the thickness direction. A ratio of the first absorption coefficient to the second absorption coefficient is greater than 1.Type: ApplicationFiled: September 14, 2021Publication date: September 1, 2022Applicant: Coretronic CorporationInventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang, Jen-Wei Yu
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Publication number: 20220269115Abstract: A viewing angle switch module includes a viewing angle limiter, a first electronically controlled viewing angle switch, a second electronically controlled viewing angle switch, a first polarizer, and a second polarizer. The viewing angle limiter has an absorption axis, and an axial direction of the absorption axis is parallel to a thickness direction of the viewing angle limiter. The viewing angle limiter, the first electronically controlled viewing angle switch, the first polarizer, the second electronically controlled viewing angle switch, and the second polarizer are overlapped. An axial direction of a first absorption axis of the first polarizer is parallel to an axial direction of a second absorption axis of the second polarizer. A display apparatus adopting the viewing angle switch module is also provided. The viewing angle switch module and the display apparatus provided by the invention have better light energy utilization rate.Type: ApplicationFiled: November 23, 2021Publication date: August 25, 2022Applicant: Coretronic CorporationInventors: Yu-Fan Chen, Ping-Yen Chen, Chung-Yang Fang
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Publication number: 20220244598Abstract: The invention provides a display device including a display panel and a backlight module including a light guide plate, a light source, and an optical film. The light guide plate has light incident and exit surfaces. The light source is disposed at one side of the light incident surface. The optical film is overlapped with the light exit surface, and has first optical microstructures facing the light exit surface. The display panel includes a liquid crystal cell overlapped with the light exit surface, first and second polarizers respectively disposed at two opposite sides of the liquid crystal cell, and a phase retardation film disposed between the first and second polarizers. The first polarizer is located between the liquid crystal cell and the optical film. An axial direction of an optical axis of the phase retardation film is perpendicular to an axial direction of an absorption axis of the first polarizer.Type: ApplicationFiled: January 12, 2022Publication date: August 4, 2022Applicant: Coretronic CorporationInventors: Ping-Yen Chen, Chung-Yang Fang, Jen-Wei Yu
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Patent number: 11402675Abstract: A viewing angle switch module includes a viewing angle limiter, a first electronically controlled viewing angle switch, a second electronically controlled viewing angle switch, a first polarizer, and a second polarizer. The viewing angle limiter has an absorption axis, and an axial direction of the absorption axis is parallel to a thickness direction of the viewing angle limiter. The viewing angle limiter, the first electronically controlled viewing angle switch, the first polarizer, the second electronically controlled viewing angle switch, and the second polarizer are overlapped. An axial direction of a first absorption axis of the first polarizer is parallel to an axial direction of a second absorption axis of the second polarizer. A display apparatus adopting the viewing angle switch module is also provided. The viewing angle switch module and the display apparatus provided by the invention have better light energy utilization rate.Type: GrantFiled: November 23, 2021Date of Patent: August 2, 2022Assignee: Coretronic CorporationInventors: Yu-Fan Chen, Ping-Yen Chen, Chung-Yang Fang
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Patent number: 11402676Abstract: A viewing angle switchable display apparatus including a display panel, an electrically controlled viewing angle switching device, an electrically controlled light scattering switching device, and a backlight module is provided. The electrically controlled viewing angle switching device includes two first transparent substrates, two first transparent conductive layers, a liquid crystal layer, and a first polarizer located on a side of the electrically controlled viewing angle switching device which is far away from the display panel. The liquid crystal layer includes liquid crystal molecules, and optical axes of the liquid crystal molecules are parallel or perpendicular to a transmission axis of the first polarizer. The electrically controlled light scattering switching device is located between the display panel and the backlight module and includes two second transparent substrates, two second transparent conductive layers, and an electronically controlled polymer material layer.Type: GrantFiled: November 30, 2017Date of Patent: August 2, 2022Assignee: Coretronic CorporationInventors: Chung-Yang Fang, Wen-Chun Wang, Ping-Yen Chen, Hsiung-Chun Hsu, Chien-Hui Lee
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Patent number: 11391971Abstract: A display device includes an electrically controlled viewing angle switching device including two polarizers and a liquid crystal cell disposed between the two polarizers. The liquid crystal cell includes two alignment layers and a liquid crystal material layer disposed between the two alignment layers and including a plurality of liquid crystal molecules. A direction of an optical axis of the liquid crystal molecules and a viewing angle control direction of the display device have an included angle ?1 of 70-110 degrees. Two alignment directions of the two alignment layers and the viewing angle control direction have an included angle of 90±20 degrees and an included angle of 270±20 degrees, respectively. Included angles between directions of transmission axis of the two polarizers and alignment directions of the two alignment layers are selected from one of 0±5 degrees and 90±5 degrees.Type: GrantFiled: April 24, 2020Date of Patent: July 19, 2022Assignee: Coretronic CorporationInventors: Chung-Yang Fang, Ping-Yen Chen, Jen-Wei Yu, Yang-Ching Lin, Yu-Fan Chen
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Patent number: 11391987Abstract: A backlight module including a light guide plate, a light source, a prism sheet and a light absorbing sheet is provided. The light guide plate has a light incident surface, a light emitting surface connected to the light incident surface and a bottom surface opposite to the light emitting surface. At least one of the light emitting surface and the bottom surface of the light guide plate is disposed with a plurality of micro lens structures. The light source is disposed on a side of the light incident surface of the light guide plate. The prism sheet is overlapped with the light emitting surface of the light guide plate and has a plurality of prism structures facing the light emitting surface with an extending direction parallel to the light incident surface. The light absorbing sheet is disposed on a side of the bottom surface of the light guide plate.Type: GrantFiled: December 3, 2020Date of Patent: July 19, 2022Assignee: Coretronic CorporationInventors: Ping-Yen Chen, Chung-Yang Fang, Yang-Ching Lin, Jen-Wei Yu, Yu-Fan Chen
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Publication number: 20220204676Abstract: A copolymer includes a repeating unit corresponding to polyether sulfone and a repeating unit corresponding to vinyl monomer. The repeating unit corresponding to polyether sulfone has a repeating number of 200 to 450, and the repeating unit corresponding to vinyl monomer has a repeating number of 20 to 100. The copolymer can be blended with another polymer such as polyphenylene sulfide to form a blend.Type: ApplicationFiled: December 28, 2020Publication date: June 30, 2022Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ping-Yen CHEN, Pei-Yin CHEN, Yen-Cheng LI
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Publication number: 20220181528Abstract: A display device, including a circuit substrate, a light-emitting layer, a quarter-wave plate, and a band-pass polarizing layer, is provided. The light-emitting layer is disposed on the circuit substrate and has light-emitting structures, which are electrically connected to the circuit substrate and include first light-emitting structures, which have a first main light-emitting wavelength. The quarter-wave plate is disposed in overlap with the light-emitting structures and is located between the band-pass polarizing layer and the light-emitting layer. The band-pass polarizing layer includes at least one first band-pass polarizing pattern, which have a first absorption axis. The first wavelength range is the first main light-emitting wavelength ±10 nm. An average transmittance of the first band-pass polarizing patterns to light with a wavelength outside the first wavelength range and a polarization direction parallel to the first absorption axis is less than 20%.Type: ApplicationFiled: November 15, 2021Publication date: June 9, 2022Applicant: Coretronic CorporationInventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang, Yu-Fan Chen
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Patent number: 11320680Abstract: A viewing angle switch module including a viewing angle limiting device and a first electrically controlled viewing angle switch device is provided. A plurality of first block walls of the viewing angle limiting device are arranged along a first direction and extended in a second direction. The first electrically controlled viewing angle switch device has a first liquid crystal layer, a first polarizer and a second polarizer. An angle of 90±20 degrees is included between an optical axis of the first liquid crystal layer and the first direction. The first polarizer and the second polarizer are respectively located at two opposite sides of the first liquid crystal layer. An absorption axis of the first polarizer and a, absorption axis of the second polarizer are parallel to or perpendicular to the first direction. A display apparatus adopting the viewing angle switch module is also provided.Type: GrantFiled: March 30, 2020Date of Patent: May 3, 2022Assignee: Coretronic CorporationInventors: Chung-Yang Fang, Ping-Yen Chen, Yang-Ching Lin, Jen-Wei Yu, Yu-Fan Chen
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Patent number: 11215855Abstract: The disclosure provides a screen anti-peeping protection layer arranged above a display panel. The screen anti-peeping protection layer includes a first polarizing layer, a second polarizing layer, a viewing angle adjusting layer and a touch sensing layer. The first polarizing layer and the second polarizing layer are sequentially arranged on a transmission path of a display beam which comes from the display panel. The viewing angle adjusting layer is arranged on the transmission path and located between the first polarizing layer and the second polarizing layer, and used for changing a range of an emitted light viewing angle of the display beam. The touch sensing layer is arranged on the transmission path, and located above the viewing angle adjusting layer and opposite to the first polarizing layer. The disclosure also provides a touch display device including the screen anti-peeping protection layer and the display panel as described above.Type: GrantFiled: June 17, 2020Date of Patent: January 4, 2022Assignee: Coretronic CorporationInventors: Ping-Yen Chen, Chung-Yang Fang, Yu-Wei Liang, Yin-Jen Lin
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Publication number: 20210349335Abstract: A viewing angle limiting device, including a polymer substrate and a plurality of dye molecules, is provided. The dye molecules are dispersedly arranged in the polymer substrate. The dye molecules have a first absorption coefficient in a thickness direction of the polymer substrate. The dye molecules have a second absorption coefficient in a direction perpendicular to the thickness direction. A ratio of the first absorption coefficient to the second absorption coefficient is between 10 and 1000. A manufacturing method of the viewing angle limiting device and a display device including the viewing angle limiting device are also provided. The display device, the viewing angle limiting device, and the manufacturing method thereof provided by the invention have a large viewing angle filtering effect and have higher light transmittance in a viewing angle direction.Type: ApplicationFiled: April 28, 2021Publication date: November 11, 2021Applicant: Coretronic CorporationInventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang, Yang-Ching Lin
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Publication number: 20210333578Abstract: An electrically controlled viewing angle switching device including a first electrode, a second electrode, a liquid crystal layer, multiple dye molecules, and a polarizer is provided. The second electrode is disposed opposite to the first electrode. The liquid crystal layer is disposed between the first electrode and the second electrode and has an optical axis. The dye molecules are dispersedly disposed in the liquid crystal layer. Each of the dye molecules is arranged corresponding to the optical axis of the liquid crystal layer. The polarizer is stacked on the liquid crystal layer. The axial direction of the optical axis of the liquid crystal layer is perpendicular to the axial direction of the transmission axis of the polarizer. A display device using the electrically controlled viewing angle switching device is also provided.Type: ApplicationFiled: April 20, 2021Publication date: October 28, 2021Applicant: Coretronic CorporationInventors: Ping-Yen Chen, Chung-Yang Fang
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Publication number: 20210333579Abstract: The invention relates to an electrically controllable viewing angle switch device and a display apparatus. The switch device includes a first substrate, a second substrate, a liquid crystal layer, spacers, a first alignment film, a second alignment film, a first polarizer, and a second polarizer and has a light transmission region. The second substrate is disposed opposite to the first substrate. The liquid crystal layer and the spacers are located between the first substrate and the second substrate in the light transmission region. The spacers are fixed on the first or second substrate. The first polarizer and the second polarizer are disposed on opposite sides of the liquid crystal layer. The axial directions of the transmission axis of the first polarizer and the transmission axis of the second polarizer are parallel or perpendicular to the alignment direction of the first alignment film and the second alignment film.Type: ApplicationFiled: April 21, 2021Publication date: October 28, 2021Applicant: Coretronic CorporationInventors: Yang-Ching Lin, Chung-Yang Fang, Ping-Yen Chen