Patents by Inventor Yuan-Chen CHUNG
Yuan-Chen CHUNG 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: 11686973Abstract: An optical film includes a substrate layer and a plurality of optical layers stacked on the substrate layer. The at least two optical layers have microstructures that complement to each other. The optical layer close to the substrate layer is the first optical layer, and the optical far from the substrate layer is the second optical layer. The refractive index of the first optical layer is smaller than the second optical layer, and the microstructure of the second optical layer has an acute angle. Because of the arrangement of the optical layers, the contrast of light intensity can be reduced, and the uniformity can be improved. The invention also provides a backlight module and a display device including the optical film.Type: GrantFiled: May 4, 2022Date of Patent: June 27, 2023Assignee: Radiant Opto-Electronics CorporationInventors: Chun-Hau Lai, Wei-Hsuan Chen, Yung-Hui Tai, Chun-Yi Wu, Yuan-Chen Chung
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Publication number: 20230050100Abstract: An optical film includes a substrate layer and a plurality of optical layers stacked on the substrate layer. The at least two optical layers have microstructures that complement to each other. The optical layer close to the substrate layer is the first optical layer, and the optical far from the substrate layer is the second optical layer. The refractive index of the first optical layer is smaller than the second optical layer, and the microstructure of the second optical layer has an acute angle. Because of the arrangement of the optical layers, the contrast of light intensity can be reduced, and the uniformity can be improved. The invention also provides a backlight module and a display device including the optical film.Type: ApplicationFiled: May 4, 2022Publication date: February 16, 2023Applicant: Radiant Opto-Electronics CorporationInventors: Chun-Hau LAI, Wei-Hsuan CHEN, Yung-Hui TAI, Chun-Yi WU, Yuan-Chen CHUNG
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Patent number: 10989389Abstract: A light-adjusting film is mounted between a color conversion layer and a display panel of a direct type backlight module and has a substrate and at least one light-adjusting layer. The substrate has a central area and a surrounding area. The at least one light-adjusting layer has a pigment and is mounted on the substrate. A content of the pigment is gradually decreased from the surrounding area to the central area. The color of the pigment of the light-adjusting film is a correction color of lights emitted from light emitting surface of the color conversion layer in the backlight module.Type: GrantFiled: May 20, 2020Date of Patent: April 27, 2021Assignee: RADIANT OPTO-ELECTRONICS CORPORATIONInventors: Yuan-Chen Chung, Wei-Hsuan Chen, Jui Lin Chen, Pin-Hsun Lee, Ruei-Lin Huang, Yi-Nan Su
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Publication number: 20210033260Abstract: A light-adjusting film is mounted between a color conversion layer and a display panel of a direct type backlight module and has a substrate and at least one light-adjusting layer. The substrate has a central area and a surrounding area. The at least one light-adjusting layer has a pigment and is mounted on the substrate. A content of the pigment is gradually decreased from the surrounding area to the central area. The color of the pigment of the light-adjusting film is a correction color of lights emitted from light emitting surface of the color conversion layer in the backlight module.Type: ApplicationFiled: May 20, 2020Publication date: February 4, 2021Applicant: Radiant Opto-Electronics CorporationInventors: Yuan-Chen CHUNG, Wei-Hsuan CHEN, Jui Lin Chen, Pin-Hsun LEE, Ruei-Lin HUANG, Yi-Nan SU
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Patent number: 10620358Abstract: A light guide film which is adapted for use with a light source has a light transmissive substrate and a light-transmissive member unit. The substrate has a light-exiting top surface, a bottom surface that is opposite to the top surface and a lateral surface that interconnects the top and bottom surfaces and that is adapted to face toward the light source. The member unit includes a bottom member that is disposed on the bottom surface of the substrate, and a lateral member that is connected to the lateral surface of the substrate and that is adapted to be disposed between the light source and the lateral surface of the substrate. The substrate has a refractive index which is less than that of the member unit.Type: GrantFiled: February 20, 2019Date of Patent: April 14, 2020Assignees: RADIANT OPTO-ELECTRONICS (SUZHOU) CO., LTD., RADIANT OPTO-ELECTRONICS CORPORATIONInventors: Yuan-Chen Chung, Wei-Hsuan Chen
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Publication number: 20190179073Abstract: A light guide film which is adapted for use with a light source has a light transmissive substrate and a light-transmissive member unit. The substrate has a light-exiting top surface, a bottom surface that is opposite to the top surface and a lateral surface that interconnects the top and bottom surfaces and that is adapted to face toward the light source. The member unit includes a bottom member that is disposed on the bottom surface of the substrate, and a lateral member that is connected to the lateral surface of the substrate and that is adapted to be disposed between the light source and the lateral surface of the substrate. The substrate has a refractive index which is less than that of the member unit.Type: ApplicationFiled: February 20, 2019Publication date: June 13, 2019Applicants: RADIANT OPTO-ELECTRONICS (SUZHOU) CO., LTD., RADIANT OPTO-ELECTRONICS CORPORATIONInventors: Yuan-Chen Chung, Wei-Hsuan Chen
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Patent number: 10267971Abstract: A light guide film which is adapted for use with a light source has a light transmissive substrate and a light-transmissive member unit. The substrate has a light-exiting top surface, a bottom surface that is opposite to the top surface and a lateral surface that interconnects the top and bottom surfaces and that is adapted to face toward the light source. The member unit includes a bottom member that is disposed on the bottom surface of the substrate, and a lateral member that is connected to the lateral surface of the substrate and that is adapted to be disposed between the light source and the lateral surface of the substrate. The substrate has a refractive index which is less than that of the member unit.Type: GrantFiled: October 17, 2016Date of Patent: April 23, 2019Assignees: RADIANT OPTO-ELECTRONICS (SUZHOU) CO., LTD., RADIANT OPTO-ELECTRONICS CORPORATIONInventors: Yuan-Chen Chung, Wei-Hsuan Chen
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Patent number: 10007046Abstract: A light guide film for use with a light source includes a light-transmissive substrate and a light-transmissive layer. The substrate includes a top surface, and a light-incident lateral surface adapted to be disposed adjacent to the light source. The layer is disposed on the top surface of the substrate and has a light-incident lateral surface aligned with the light-incident lateral surface of the substrate. The light-transmissive layer has an inclined surface that is opposite to the substrate and that extends away from the light-incident lateral surface of the layer and obliquely toward the top surface of the substrate. The layer has a refractive index different from that of the substrate.Type: GrantFiled: October 17, 2016Date of Patent: June 26, 2018Assignees: RADIANT OPTO-ELECTRONICS (SUZHOU) CO., LTD., RADIANT OPTO-ELECTRONICS CORPORATIONInventors: Yuan-Chen Chung, Wei-Hsuan Chen
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Patent number: 9575237Abstract: A light guide element and a light source device using the same are provided. The light guide element has a main body. The main body has a hollow portion with a cone shape and a microstructure pattern formed on the main body. The cone-shaped hollow portion has a bottom portion and a top portion. The bottom portion is located on the bottom surface of the main body, and has a first hollow cross section area. The top portion is opposite to the bottom surface, and has a second cross section area smaller than the first cross section area. The microstructure pattern includes high-density areas and low-density areas to improve a light distribution caused by the cone-shaped hollow portion. The light source device includes the light guide element and a ht emitting diode (LED). The LED is used to emit light into the cone-shape hollow portion through the bottom portion.Type: GrantFiled: January 6, 2015Date of Patent: February 21, 2017Assignee: Radiant Opto-Electronics CorporationInventors: Wei-Hsuan Chen, Kai-Chun Yang, Yuan-Chen Chung
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Publication number: 20170045664Abstract: A light guide film for use with a light source includes a light-transmissive substrate and a light-transmissive layer. The substrate includes a top surface, and a light-incident lateral surface adapted to be disposed adjacent to the light source. The layer is disposed on the top surface of the substrate and has a light-incident lateral surface aligned with the light-incident lateral surface of the substrate. The light-transmissive layer has an inclined surface that is opposite to the substrate and that extends away from the light-incident lateral surface of the layer and obliquely toward the top surface of the substrate. The layer has a refractive index different from that of the substrate.Type: ApplicationFiled: October 17, 2016Publication date: February 16, 2017Inventors: Yuan-Chen CHUNG, Wei-Hsuan CHEN
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Publication number: 20170045665Abstract: A light guide film which is adapted for use with a light source has a light transmissive substrate and a light-transmissive member unit. The substrate has a light-exiting top surface, a bottom surface that is opposite to the top surface and a lateral surface that interconnects the top and bottom surfaces and that is adapted to face toward the light source. The member unit includes a bottom member that is disposed on the bottom surface of the substrate, and a lateral member that is connected to the lateral surface of the substrate and that is adapted to be disposed between the light source and the lateral surface of the substrate. The substrate has a refractive index which is less than that of the member unit.Type: ApplicationFiled: October 17, 2016Publication date: February 16, 2017Inventors: Yuan-Chen CHUNG, Wei-Hsuan CHEN
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Publication number: 20150117057Abstract: A light guide element and a light source device using the same are provided. The light guide element has a main body. The main body has a hollow portion with a cone shape and a microstructure pattern formed on the main body. The cone-shaped hollow portion has a bottom portion and a top portion. The bottom portion is located on the bottom surface of the main body, and has a first hollow cross section area. The top portion is opposite to the bottom surface, and has a second cross section area smaller than the first cross section area. The microstructure pattern includes high-density areas and low-density areas to improve a light distribution caused by the cone-shaped hollow portion. The light source device includes the light guide element and a ht emitting diode (LED). The LED is used to emit light into the cone-shape hollow portion through the bottom portion.Type: ApplicationFiled: January 6, 2015Publication date: April 30, 2015Inventors: Wei-Hsuan CHEN, Kai-Chun YANG, Yuan-Chen CHUNG
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Patent number: 8814411Abstract: A flat illumination device is provided, and includes a frame, a light guide plate, and at least one light source. The frame includes an inner wall, wherein the inner wall has a reflective surface. The light guide plate is disposed in the frame, and has a first surface, a second surface opposite to the first surface, and at least one light incident surface adjoining the first and second surfaces. The first surface faces the reflective surface, and there is a distance between the first surface and the reflective surface. At least one pattern formed from mesh points or microstructures is disposed on at least one of the first surface and the second surface. The light source is disposed in the frame, and is adjacent to the light incident surface for providing light to the light guide plate.Type: GrantFiled: January 29, 2013Date of Patent: August 26, 2014Assignee: Radiant Opto-Electronics CorporationInventors: Yuan-Chen Chung, Wei-Hsuan Chen, Li-Fei Wang
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Publication number: 20140177274Abstract: A light guide element and a light source device using the same are provided. The light guide element has a main body. The side surface is located between the bottom surface and the light-emitting surface. The bottom surface is opposite to the light-emitting surface. The main body has a hollow portion with a cone shape. The cone-shaped hollow portion has a bottom portion and a top portion. The bottom portion is located on the bottom surface of the main body, and has a first hollow cross section area. The top portion is opposite to the bottom surface, and has a second cross section area smaller than the first cross section area. The light source device includes the light guide element and a light emitting diode (LED). The LED is used to emit light into the cone-shape hollow portion through the bottom portion.Type: ApplicationFiled: April 23, 2013Publication date: June 26, 2014Applicant: Radiant Opto-Electronics CorporationInventors: Wei-Hsuan CHEN, Kai-Chun YANG, Yuan-Chen CHUNG
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Publication number: 20140133175Abstract: A flat illumination device is provided, and includes a frame, a light guide plate, and at least one light source. The frame includes an inner wall, wherein the inner wall has a reflective surface. The light guide plate is disposed in the frame, and has a first surface, a second surface opposite to the first surface, and at least one light incident surface adjoining the first and second surfaces. The first surface faces the reflective surface, and there is a distance between the first surface and the reflective surface. At least one pattern formed from mesh points or microstructures is disposed on at least one of the first surface and the second surface. The light source is disposed in the frame, and is adjacent to the light incident surface for providing light to the light guide plate.Type: ApplicationFiled: January 29, 2013Publication date: May 15, 2014Applicant: RADIANT OPTO-ELECTRONICS CORPORATIONInventors: Yuan-Chen CHUNG, Wei-Hsuan CHEN, Li-Fei WANG