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).

  • Publication number: 20240345309
    Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate is configured to be coupled to a light source. The light guide plate includes a light-emitting surface, a bottom surface, a light-incident surface, plural stripe-shaped microstructures and plural light guiding microstructures. The bottom surface is opposite to the light-emitting surface. The light-incident surface is connected between the light-emitting surface and the bottom surface. The stripe-shaped microstructures are disposed on the at least one of the light-emitting surface and the bottom surface, and each of the stripe-shaped microstructures has two opposing side surfaces and an active surface. The side surfaces are respectively connected to two opposite sides of the active surface. The light-guiding microstructures are disposed between any adjacent two of the stripe-shaped microstructures and arranged along an extending direction of each of the stripe-shaped microstructures.
    Type: Application
    Filed: June 26, 2024
    Publication date: October 17, 2024
    Inventors: Hao CHEN, Chin-Ting WENG, Chia-Yin CHANG, Feng-Nien TSAI
  • Publication number: 20240329291
    Abstract: An optical film set is configured to guide light from a light guide plate in a backlight module. The optical film set includes a lower prism film and an upper prism film. The lower prism film has plural lower prism structures, and each of the lower prism structures extends along a first direction. The upper prism film is disposed above the lower prism film. The upper prism film has plural upper prism structures, and each of the upper prism structures extends along a second direction. The second direction is different from the first direction. There is an included angle between the second direction and an extending direction of a light-incident surface of the light guide plate. The included angle is in a range from 25 degrees to 50 degrees or a range from 130 degrees to 155 degrees including the end point values.
    Type: Application
    Filed: June 6, 2024
    Publication date: October 3, 2024
    Inventors: Chien-Chih HUANG, Po-Chang HUANG, Chia-Yin CHANG
  • Patent number: 12085260
    Abstract: 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: Grant
    Filed: September 9, 2021
    Date of Patent: September 10, 2024
    Assignees: Radiant(Guangzhou) Opto-Electronics Co., Ltd, Radiant Opto-Electronics Corporation
    Inventors: Yen-Chuan Chu, Chia-Yin Chang, Chin-Ting Weng, Yi-Ching Chung, Hao Chen
  • Patent number: 12044879
    Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate is configured to be coupled to a light source. The light guide plate includes a light-emitting surface, a bottom surface, a light-incident surface, plural stripe-shaped microstructures and plural light guiding microstructures. The bottom surface is opposite to the light-emitting surface. The light-incident surface is connected between the light-emitting surface and the bottom surface. The stripe-shaped microstructures are disposed on the at least one of the light-emitting surface and the bottom surface, and each of the stripe-shaped microstructures has two opposing side surfaces and an active surface. The side surfaces are respectively connected to two opposite sides of the active surface. The light-guiding microstructures are disposed between any adjacent two of the stripe-shaped microstructures and arranged along an extending direction of each of the stripe-shaped microstructures.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: July 23, 2024
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Hao Chen, Chin-Ting Weng, Chia-Yin Chang, Feng-Nien Tsai
  • Publication number: 20240159953
    Abstract: A backlight module includes a light guide plate, a light source, and an optical film. The light guide plate has a light incident surface and a light exiting surface opposite to the light incident surface, in which the light exiting surface has a normal line. The light source is adjacent to the light incident surface. The optical film is disposed to the light exiting surface and includes plural parallel prisms and plural microstructures. An extending direction of each of the prisms is perpendicular to the normal line, and each of the prisms faces the light exiting surface of the light guide plate. Each of the microstructures is located on a surface of the optical film which faces away from the light guide plate. Each of the microstructures has a pyramid structure with plural facets. The prisms are located between the microstructures and the light exiting surface.
    Type: Application
    Filed: January 26, 2024
    Publication date: May 16, 2024
    Inventors: Chia-Yin CHANG, Po-Chang HUANG, Kun-Cheng LIN
  • Patent number: 11921314
    Abstract: A backlight module includes a light guide plate, a light source, and an optical film. The light guide plate has a light incident surface and a light exiting surface opposite to the light incident surface, in which the light exiting surface has a normal line. The light source is adjacent to the light incident surface. The optical film is disposed to the light exiting surface and includes plural parallel prisms and plural microstructures. An extending direction of each of the prisms is perpendicular to the normal line, and each of the prisms faces the light exiting surface of the light guide plate. Each of the microstructures is located on a surface of the optical film which faces away from the light guide plate. Each of the microstructures has a pyramid structure with plural facets. The prisms are located between the microstructures and the light exiting surface.
    Type: Grant
    Filed: March 24, 2023
    Date of Patent: March 5, 2024
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Chia-Yin Chang, Po-Chang Huang, Kun-Cheng Lin
  • Publication number: 20230324597
    Abstract: A backlight module includes a light guide plate, a light source, and an optical film. The light guide plate has a light incident surface and a light exiting surface opposite to the light incident surface, in which the light exiting surface has a normal line. The light source is adjacent to the light incident surface. The optical film is disposed to the light exiting surface and includes plural parallel prisms and plural microstructures. An extending direction of each of the prisms is perpendicular to the normal line, and each of the prisms faces the light exiting surface of the light guide plate. Each of the microstructures is located on a surface of the optical film which faces away from the light guide plate. Each of the microstructures has a pyramid structure with plural facets. The prisms are located between the microstructures and the light exiting surface.
    Type: Application
    Filed: March 24, 2023
    Publication date: October 12, 2023
    Inventors: Chia-Yin CHANG, Po-Chang HUANG, Kun-Cheng LIN
  • Patent number: 11774663
    Abstract: 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: Grant
    Filed: October 28, 2022
    Date of Patent: October 3, 2023
    Assignees: RADIANT(GUANGZHOU) OPTO-ELECTRONICS CO., LTD, RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Chia-Yin Chang, Chin-Ting Weng, Hao Chen, Yi-Ching Chung
  • Patent number: 11740400
    Abstract: A light guide plate has a top side and a bottom side that are opposite to each other, and has a light-incident surface, a light-emitting surface, multiple light guide structures, and an inclined surface structure. The light-incident surface is located at an end of the light guide plate. The light-emitting surface is located on the top side of the light guide plate and is connected to the light-incident surface. The light guide structures are disposed on the light-emitting surface, and each one of the light guide structures has a light-facing surface and an opposite light-facing surface connected to a side of the light-facing surface away from the light-incident surface. The inclined surface structure is connected to the light-incident surface and the bottom side of the light guide plate. A front light module having the light guide plate and a display device having the front light module are also provided.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: August 29, 2023
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Kuo-Cheng Tung, Hao Chen, Chin-Ting Weng, Chia-Yin Chang
  • Publication number: 20230185013
    Abstract: A light guide plate has a top side and a bottom side that are opposite to each other, and has a light-incident surface, a light-emitting surface, multiple light guide structures, and an inclined surface structure. The light-incident surface is located at an end of the light guide plate. The light-emitting surface is located on the top side of the light guide plate and is connected to the light-incident surface. The light guide structures are disposed on the light-emitting surface, and each one of the light guide structures has a light-facing surface and an opposite light-facing surface connected to a side of the light-facing surface away from the light-incident surface. The inclined surface structure is connected to the light-incident surface and the bottom side of the light guide plate. A front light module having the light guide plate and a display device having the front light module are also provided.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 15, 2023
    Applicant: Radiant Opto-Electronics Corporation
    Inventors: Kuo-Cheng TUNG, Hao CHEN, Chin-Ting WENG, Chia-Yin CHANG
  • Publication number: 20230108307
    Abstract: 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: Application
    Filed: October 28, 2022
    Publication date: April 6, 2023
    Inventors: Chia-Yin CHANG, Chin-Ting WENG, Hao CHEN, Yi-Ching CHUNG
  • Patent number: 11531154
    Abstract: A backlight module and a display device are provided. The backlight module includes an optical film and a light source. The optical film includes a main body and optical structures. The main body has a light-emitting surface, an optical surface, a first side surface and a second side surface. The optical structures are disposed on the main body. Each of optical structures has a first surface and a second surface. The first surface is inclined relative to the optical surface. A first angle is formed between the first surface and the optical surface. The second surface is inclined relative to the optical surface, and a second angle is formed between the second surface and the optical surface. The first angles and the second angles are acute angles, and the first angles of the optical structures vary along a first direction from the first side surface to the second side surface.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: December 20, 2022
    Assignees: Radiant(Guangzhou) Opto-Electronics Co., Ltd, Radiant Opto-Electronics Corporation
    Inventors: Chia-Yin Chang, Po-Chang Huang, Kun-Cheng Lin
  • Patent number: 11525952
    Abstract: 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: Grant
    Filed: May 17, 2021
    Date of Patent: December 13, 2022
    Assignees: RADIANT(GUANGZHOU) OPTO-ELECTRONICS CO., LTD, RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Chia-Yin Chang, Chin-Ting Weng, Hao Chen, Yi-Ching Chung
  • Publication number: 20220373731
    Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate is configured to be coupled to a light source. The light guide plate includes a light-emitting surface, a bottom surface, a light-incident surface, plural stripe-shaped microstructures and plural light guiding microstructures. The bottom surface is opposite to the light-emitting surface. The light-incident surface is connected between the light-emitting surface and the bottom surface. The stripe-shaped microstructures are disposed on the at least one of the light-emitting surface and the bottom surface, and each of the stripe-shaped microstructures has two opposing side surfaces and an active surface. The side surfaces are respectively connected to two opposite sides of the active surface. The light-guiding microstructures are disposed between any adjacent two of the stripe-shaped microstructures and arranged along an extending direction of each of the stripe-shaped microstructures.
    Type: Application
    Filed: August 5, 2022
    Publication date: November 24, 2022
    Inventors: Hao CHEN, Chin-Ting WENG, Chia-Yin CHANG, Feng-Nien TSAI
  • Patent number: 11500144
    Abstract: 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: Grant
    Filed: August 12, 2021
    Date of Patent: November 15, 2022
    Assignees: Radiant Opto-Electronics (Suzhou) Co., Ltd., Radiant Opto-Electronics Corporation
    Inventors: Chia-Yin Chang, Po-Chang Huang, Kun-Cheng Lin
  • Publication number: 20220035093
    Abstract: A backlight module and a display device are provided. The backlight module includes an optical film and a light source. The optical film includes a main body and optical structures. The main body has a light-emitting surface, an optical surface, a first side surface and a second side surface. The optical structures are disposed on the main body. Each of optical structures has a first surface and a second surface. The first surface is inclined relative to the optical surface. A first angle is formed between the first surface and the optical surface. The second surface is inclined relative to the optical surface, and a second angle is formed between the second surface and the optical surface. The first angles and the second angles are acute angles, and the first angles of the optical structures vary along a first direction from the first side surface to the second side surface.
    Type: Application
    Filed: August 27, 2021
    Publication date: February 3, 2022
    Inventors: Chia-Yin CHANG, Po-Chang HUANG, Kun-Cheng LIN
  • Publication number: 20210404633
    Abstract: 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: Application
    Filed: September 9, 2021
    Publication date: December 30, 2021
    Inventors: Yen-Chuan CHU, Chia-Yin CHANG, Chin-Ting WENG, Yi-Ching CHUNG, Hao CHEN
  • Publication number: 20210373224
    Abstract: 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: Application
    Filed: August 12, 2021
    Publication date: December 2, 2021
    Inventors: Chia-Yin CHANG, Po-Chang HUANG, Kun-Cheng LIN
  • Patent number: 11156341
    Abstract: 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: Grant
    Filed: June 3, 2020
    Date of Patent: October 26, 2021
    Assignees: Radiant(Guangzhou) Opto-Electronics Co., Ltd, Radiant Opto-Electronics Corporation
    Inventors: Yen-Chuan Chu, Chia-Yin Chang, Chin-Ting Weng, Yi-Ching Chung, Hao Chen
  • Patent number: 11119264
    Abstract: 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: Grant
    Filed: April 13, 2020
    Date of Patent: September 14, 2021
    Assignees: RADIANT OPTO-ELECTRONICS (SUZHOU) CO. LTD., RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Chia-Yin Chang, Po-Chang Huang, Kun-Cheng Lin