Patents by Inventor Chia-Yin Chang
Chia-Yin Chang 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: 11035996Abstract: A light guide plate includes a main body, stripe structures, and light-adjusting structures. The main body includes a light-incident surface and an optical surface. The stripe structures are disposed on the optical surface. The light-adjusting structures are disposed between two adjacent stripe structures. Each of the light-adjusting structures includes a first light active surface and a second light active surface. The first light active surface faces towards the light-incident surface. The second light active surface faces towards an opposite light-incident surface. The first light active surface and the second light active surface are inclined towards different directions and formed a non-symmetrical shape. A first included angle is formed between the first light active surface and the optical surface. A second included angle is formed between the second light active surface and the optical surface. The first included angle and the second included angle are acute angles.Type: GrantFiled: March 25, 2020Date of Patent: June 15, 2021Assignees: Radiant(Guangzhou) Opto-Electronics Co., Ltd, Radiant Opto-Electronics CorporationInventors: Chia-Yin Chang, Chin-Ting Weng, Hao Chen, Yi-Ching Chung
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Patent number: 10914885Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body and optical structures. The main body has a light-incident surface, an opposite light-incident surface, and an optical surface. The optical structures are disposed on the optical surface. Each of the optical structures has a first optical active surface and a second optical active surface, and the first optical active surface and the second optical active surface are inclined towards different directions and formed in a non-symmetrical shape. A first inclined angle is formed between the first optical active surface and the optical surface. A second inclined angle is formed between the second optical active surface and the optical surface. The first included angle is greater than the second included angle, and a light-emitting angle of the light guide plate decreases exponentially with the first inclined angle.Type: GrantFiled: November 1, 2019Date of Patent: February 9, 2021Assignees: Radiant(Guangzhou) Opto-Electronics Co., Ltd, Radiant Opto-Electronics CorporationInventors: Chia-Yin Chang, Chin-Ting Weng, Hao Chen, Yi-Ching Chung
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Publication number: 20200363039Abstract: A backlight module and a display device are provided. The backlight module includes a light source structure and at least one optical film. The optical film is disposed above the light source structure. The optical film includes a main body and plural optical structures. The optical structures are disposed on the main body. Each of the optical structures is a tapered structure. Each of the optical structures has plural side surfaces, and a portion of light emitted from the light source structure is guided toward plural primary directions when passing through the side surfaces of the optical structures, and therefore the light emitted from the light source is no longer concentrated on the top of each of the optical structures.Type: ApplicationFiled: June 3, 2020Publication date: November 19, 2020Inventors: Yen-Chuan Chu, Chia-Yin Chang, Chin-Ting Weng, Yi-Ching Chung, Hao Chen
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Patent number: 10816715Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body and plural prism portions. The main body has a first extending direction and a second extending direction. The main body includes a light-incident surface extending along the first extending direction and an optical surface connected to the light-incident surface. The optical surface has a first region, a second region and a third region which are arranged along the second extending direction. The prism portions are disposed on the optical surface and extend along the second extending direction. An occupied area ratio of the prism portions located in the first region is greater than an occupied area ratio of the prism portions located in the second region and is smaller than an occupied area ratio of the prism portions located in the third region.Type: GrantFiled: December 26, 2018Date of Patent: October 27, 2020Assignees: RADIANT (GUANGZHOU) OPTO-ELECTRONICS CO., LTD., RADIANT OPTO-ELECTRONICS CORPORATIONInventors: Chia-Yin Chang, Chin-Ting Weng, Hao Chen, Yi-Ching Chung
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Publication number: 20200241192Abstract: A light guide plate includes a main body, first stripe structures and second stripe structures. The main body has an optical surface, a light-incident surface and an opposite light-incident surface. The main body has a hole passing through the optical surface, and the optical surface has a first region and a second region which are separated by an imaginary line. The imaginary line intersects the hole. The hole has a first side near the opposite light-incident surface and a second side near the light-incident surface. A portion of each of the first stripe structures is disposed in the first region. The second stripe structures are disposed in the second region. An extending direction of at least one portion of each first stripe structure is vertical to the light-incident surface, and a portion of the second stripe structures extends to the first side of the hole near the opposite light-incident surface.Type: ApplicationFiled: April 13, 2020Publication date: July 30, 2020Inventors: Chia-Yin CHANG, Po-Chang HUANG, Kun-Cheng LIN
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Publication number: 20200225403Abstract: A light guide plate includes a main body, stripe structures, and light-adjusting structures. The main body includes a light-incident surface and an optical surface. The stripe structures are disposed on the optical surface. The light-adjusting structures are disposed between two adjacent stripe structures. Each of the light-adjusting structures includes a first light active surface and a second light active surface. The first light active surface faces towards the light-incident surface. The second light active surface faces towards an opposite light-incident surface. The first light active surface and the second light active surface are inclined towards different directions and formed a non-symmetrical shape. A first included angle is formed between the first light active surface and the optical surface. A second included angle is formed between the second light active surface and the optical surface. The first included angle and the second included angle are acute angles.Type: ApplicationFiled: March 25, 2020Publication date: July 16, 2020Inventors: Chia-Yin Chang, Chin-Ting Weng, Hao Chen, Yi-Ching Chung
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Publication number: 20200064536Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body and optical structures. The main body has a light-incident surface, an opposite light-incident surface, and an optical surface. The optical structures are disposed on the optical surface. Each of the optical structures has a first optical active surface and a second optical active surface, and the first optical active surface and the second optical active surface are inclined towards different directions and formed in a non-symmetrical shape. A first inclined angle is formed between the first optical active surface and the optical surface. A second inclined angle is formed between the second optical active surface and the optical surface. The first included angle is greater than the second included angle, and a light-emitting angle of the light guide plate decreases exponentially with the first inclined angle.Type: ApplicationFiled: November 1, 2019Publication date: February 27, 2020Inventors: Chia-Yin CHANG, Chin-Ting Weng, Hao Chen, Yi-Ching Chung
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Publication number: 20190361165Abstract: A light guide plate with multi-directional structures includes a main body, a plurality of first microstructures and a plurality of second microstructures. The main body includes a light-incident surface, a light-emitting surface and a reflecting surface. The light-incident surface connects the light-emitting surface and the reflecting surface. The first microstructures are disposed on the light-emitting surface or the reflecting surface and arranged along a first extending direction. The second microstructures are disposed on the light-emitting surface or the reflecting surface and arranged along a second extending direction. The second microstructures and the first microstructures are disposed on the same plane and intersect with each other. Each of the second microstructures is a single stripe pattern, and has a width which becomes gradually smaller from one end of the second microstructure near the light-incident surface to the other end of the second microstructure away from the light-incident surface.Type: ApplicationFiled: August 8, 2019Publication date: November 28, 2019Inventors: Chia-Yin CHANG, Po-Chang HUANG, Chih-Chiang CHANG, Shan-Fu CHANG, Shin-Bo LIN
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Patent number: 10338292Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body, plural first strip structures and second strip structures. The main body includes a light incident surface, an end portion and a light guide portion. The end portion has at least one inclined surface. The light guide portion is connected to the end portion. The light guide portion has a first optical surface and a second optical surface. At least one portion of each of the first strip structures is disposed on the first optical surface. At least one portion of each of the second strip structures is disposed on the second optical surface. An inherent type, an arrangement manner or an arrangement position of the first strip structures is different from an inherent type, an arrangement manner or an arrangement position of the second strip structures.Type: GrantFiled: August 25, 2017Date of Patent: July 2, 2019Assignees: Radiant Opto-Electronics (Suzhou) Co., Ltd., Radiant Opto-Electronics CorporationInventors: Chia-Yin Chang, Shin-Bo Lin
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Patent number: 10281635Abstract: A light guide plate and a backlight module are described. The light guide plate includes a main body and a plurality of stripe microstructures. The main body includes a light incidence surface, a light-emitting surface and a light reflective surface. The light-emitting surface is opposite to the light reflective surface, and the light incidence surface is connected between the light-emitting surface and the light reflective surface. The light-emitting surface includes a microstructure region adjacent to the light incidence surface. The stripe microstructures are arranged in the microstructure region, and parallel to a normal line of the light incidence surface.Type: GrantFiled: December 14, 2016Date of Patent: May 7, 2019Assignees: Radiant Opto-Electronics (Suzhou) Co.,Ltd., Radiant Opto-Electronics CorporationInventors: Chia-Yin Chang, Chin-Ting Weng
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Publication number: 20190129086Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body and plural prism portions. The main body has a first extending direction and a second extending direction. The main body includes a light-incident surface extending along the first extending direction and an optical surface connected to the light-incident surface. The optical surface has a first region, a second region and a third region which are arranged along the second extending direction. The prism portions are disposed on the optical surface and extend along the second extending direction. An occupied area ratio of the prism portions located in the first region is greater than an occupied area ratio of the prism portions located in the second region and is smaller than an occupied area ratio of the prism portions located in the third region.Type: ApplicationFiled: December 26, 2018Publication date: May 2, 2019Inventors: Chia-Yin CHANG, Chin-Ting WENG, Hao CHEN, Yi-Ching CHUNG
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Patent number: 10274663Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body, plural first stripe structures and plural second stripe structures. The main body has at least one light-incident surface and a main surface connected to the at least one light-incident surface. The first stripe structures are arranged on plural first regions of the main surface, in which each of the first stripe structures has a first tapered portion. The second stripe structures are arranged on a plurality of second regions of the main surface, in which each of the second stripe structures has a second tapered portion. The first areas and the second areas of the main surface are alternately disposed, and an inherent type of the second stripe structures is different from an inherent type of the first stripe structures.Type: GrantFiled: March 1, 2017Date of Patent: April 30, 2019Assignees: Radiant Opto-ELectronics (Suzhou) CO., Ltd., Radiant Opto-Electronics CorporationInventors: Chia-Yin Chang, Chin-Ting Weng, Shin-Bo Lin
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Patent number: 10215904Abstract: A backlight module and a display device are provided. The backlight module includes a light guide plate, a light source and a first prism film. The light guide plate includes a main body and plural oblique microstructures. The main body has a light-incident surface and at least one main surface connected to the light-incident surface. The main surface has a first area and a second area. The oblique microstructures are disposed in the first area. Each of the oblique microstructures has a first slope. A light source is disposed adjacent to the light-incident surface. The first prism film is disposed in front of the light guide plate. The first prism film has plural first prism microstructures. Each of the first prism microstructures has a second slope. One of the first slope and the second slope is a positive number, and the other one is a negative number.Type: GrantFiled: May 23, 2017Date of Patent: February 26, 2019Assignees: Radiant Opto-Electronics (Suzhou) Co., Ltd., Radiant Opto-Electronics CorporationInventors: Chin-Ting Weng, Yue-Heng Lee, Chia-Yin Chang
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Patent number: 10185072Abstract: A light guide plate and a light source module are described. The light guide plate includes a main body, first stripe microstructures and second stripe microstructures. The main body includes a light incidence surface and an optic surface. The light incidence surface is connected to the optic surface. The optic surface includes a first microstructure region and a second microstructure region arranged sequentially, and the first microstructure region is near the light incidence surface. The first stripe microstructures are disposed in the first microstructure region and extending along a direction from one side near the light-incident surface to the other side away from the light-incident surface. The second stripe microstructures are disposed in the second microstructure region along the direction. A gradient of each second stripe microstructure is gradually varied along the direction.Type: GrantFiled: August 2, 2017Date of Patent: January 22, 2019Assignee: Radiant Opto-Electronics CorporationInventors: Chia-Yin Chang, Chin-Ting Weng
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Patent number: 10185071Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body, first stripe microstructures, second stripe microstructures and third stripe microstructures. The main body includes a light incidence surface and an optic surface having a first area and a second area. The first area is disposed nearer the light incidence surface. The first stripe microstructures and the second stripe microstructures are respectively disposed on the first area and the second area. Each of the first stripe microstructures and the second stripe microstructures extends along the direction vertical to the light incidence surface. A width of one end of each second stripe microstructure near the light incidence surface is smaller than a width of the other end away from the light incidence surface. The third stripe microstructures are distributed on a partial or the whole region of the optic surface.Type: GrantFiled: August 28, 2017Date of Patent: January 22, 2019Assignees: Radiant Opto-Electronics (Suzhou) Co.,Ltd., Radiant Opto-Electronics CorporationInventors: Chia-Yin Chang, Po-Chang Huang, Shin-Bo Lin
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Patent number: 10121938Abstract: A light source module is provided. The light source module includes a flexible printed circuit board, plural light-emitting diodes and plural first light-absorbing portions. The flexible printed circuit board has a first edge and a second edge opposite to the first edge. The light-emitting diodes are disposed on the flexible printed circuit board near the first edge. The first light-absorbing portions are disposed on the flexible printed circuit board near the second edge, in which the first light-absorbing portions are alternately arranged with the light-emitting diodes.Type: GrantFiled: June 26, 2014Date of Patent: November 6, 2018Assignee: Radiant Opto-Electronics CorporationInventors: Chia-Yin Chang, Chin-Ting Weng
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Publication number: 20180100960Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body, first stripe microstructures, second stripe microstructures and third stripe microstructures. The main body includes a light incidence surface and an optic surface having a first area and a second area. The first area is disposed nearer the light incidence surface. The first stripe microstructures and the second stripe microstructures are respectively disposed on the first area and the second area. Each of the first stripe microstructures and the second stripe microstructures extends along the direction vertical to the light incidence surface. A width of one end of each second stripe microstructure near the light incidence surface is smaller than a width of the other end away from the light incidence surface. The third stripe microstructures are distributed on a partial or the whole region of the optic surface.Type: ApplicationFiled: August 28, 2017Publication date: April 12, 2018Inventors: Chia-Yin CHANG, Po-Chang HUANG, Shin-Bo LIN
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Publication number: 20180088267Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body, plural first strip structures and second strip structures. The main body includes a light incident surface, an end portion and a light guide portion. The end portion has at least one inclined surface. The light guide portion is connected to the end portion. The light guide portion has a first optical surface and a second optical surface. At least one portion of each of the first strip structures is disposed on the first optical surface. At least one portion of each of the second strip structures is disposed on the second optical surface. An inherent type, an arrangement manner or an arrangement position of the first strip structures is different from an inherent type, an arrangement manner or an arrangement position of the second strip structures.Type: ApplicationFiled: August 25, 2017Publication date: March 29, 2018Inventors: Chia-Yin CHANG, Shin-Bo LIN
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Publication number: 20170343722Abstract: A backlight module and a display device are provided. The backlight module includes a light guide plate, a light source and a first prism film. The light guide plate includes a main body and plural oblique microstructures. The main body has a light-incident surface and at least one main surface connected to the light-incident surface. The main surface has a first area and a second area. The oblique microstructures are disposed in the first area. Each of the oblique microstructures has a first slope. A light source is disposed adjacent to the light-incident surface. The first prism film is disposed in front of the light guide plate. The first prism film has plural first prism microstructures. Each of the first prism microstructures has a second slope. One of the first slope and the second slope is a positive number, and the other one is a negative number.Type: ApplicationFiled: May 23, 2017Publication date: November 30, 2017Inventors: Chin-Ting WENG, Yue-Heng LEE, Chia-Yin CHANG
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Publication number: 20170336551Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body, plural first stripe structures and plural second stripe structures. The main body has at least one light-incident surface and a main surface connected to the at least one light-incident surface. The first stripe structures are arranged on plural first regions of the main surface, in which each of the first stripe structures has a first tapered portion. The second stripe structures are arranged on a plurality of second regions of the main surface, in which each of the second stripe structures has a second tapered portion. The first areas and the second areas of the main surface are alternately disposed, and an inherent type of the second stripe structures is different from an inherent type of the first stripe structures.Type: ApplicationFiled: March 1, 2017Publication date: November 23, 2017Inventors: Chia-Yin CHANG, Chin-Ting WENG, Shin-Bo LIN