Patents by Inventor Kuang-Yao Chang

Kuang-Yao 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).

  • Patent number: 11669394
    Abstract: A crossing frames encoding management method, a memory storage apparatus, and a memory control circuit unit are disclosed. The method includes: reading a tag swap information corresponding to a first physical group; encoding a first data; storing a first part of the encoded first data to at least one first physical unit corresponding to a first tag information in the first physical group; and storing a second part of the encoded first data to at least one second physical unit corresponding to a second tag information in the first physical group according to the tag swap information. The first tag information corresponds to a first crossing frames encoding group. The second tag information corresponds to a second crossing frames encoding group. The first crossing frames encoding group is different from the second crossing frames encoding group.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: June 6, 2023
    Assignee: PHISON ELECTRONICS CORP.
    Inventors: Kuang-Yao Chang, Cheng-Jui Chang
  • Publication number: 20220413960
    Abstract: A crossing frames encoding management method, a memory storage apparatus, and a memory control circuit unit are disclosed. The method includes: reading a tag swap information corresponding to a first physical group; encoding a first data; storing a first part of the encoded first data to at least one first physical unit corresponding to a first tag information in the first physical group; and storing a second part of the encoded first data to at least one second physical unit corresponding to a second tag information in the first physical group according to the tag swap information. The first tag information corresponds to a first crossing frames encoding group. The second tag information corresponds to a second crossing frames encoding group. The first crossing frames encoding group is different from the second crossing frames encoding group.
    Type: Application
    Filed: July 15, 2021
    Publication date: December 29, 2022
    Applicant: PHISON ELECTRONICS CORP.
    Inventors: Kuang-Yao Chang, Cheng-Jui Chang
  • Patent number: 11307982
    Abstract: A data management method, a memory storage device and a memory control circuit unit. The method includes: executing one or more read commands, and recording a physical unit having a first variation of a read count greater than a read disturb threshold as a risk physical unit; and when a data merging process is performed, dividing valid data stored in the risk physical unit into a plurality of copies and copying the copies into a plurality of recycling units.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: April 19, 2022
    Assignee: PHISON ELECTRONICS CORP.
    Inventors: Kuang-Yao Chang, Shin-Wei Gau
  • Publication number: 20220075715
    Abstract: A data management method, a memory storage device and a memory control circuit unit. The method includes: executing one or more read commands, and recording a physical unit having a first variation of a read count greater than a read disturb threshold as a risk physical unit; and when a data merging process is performed, dividing valid data stored in the risk physical unit into a plurality of copies and copying the copies into a plurality of recycling units.
    Type: Application
    Filed: September 28, 2020
    Publication date: March 10, 2022
    Applicant: PHISON ELECTRONICS CORP.
    Inventors: Kuang-Yao Chang, Shin-Wei Gau
  • Patent number: 9545012
    Abstract: A method for manufacturing a printed circuit board of a backlight module is provided. The printed circuit board includes a light bar region and a heat dissipating region. The light bar region used for mounting a light bar of the backlight module and formed with a conductive circuit for supplying power for the light bar. The heat dissipating region is connected with the light bar region. A connection location of the light bar region and the heat dissipating region is subjected to cutting to form a slot located at a side of the printed circuit board in order to prevent short-circuiting between the heat dissipating region and the conductive circuit of the light bar region. The cutting is made to partly penetrate through the thickness of a dielectric layer on which the conductive circuit is formed in order to completely separate the light bar region from the heat dissipating region.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: January 10, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Che-chang Hu, Kuang-Yao Chang, Qian Cao
  • Patent number: 9482805
    Abstract: The present invention provides a backlight module and display device thereof, including light-guiding plate, frame and a plurality of light sources disposed near incident surface of the light-guiding plate. The backlight module further includes an opaque layer, with one part attached to the frame and the other part disposed on light-emitting surface of light-guiding plate. The opaque layer shields and absorbs partial light emitted directly from the plurality of light sources and light from light-emitting surface covered by opaque layer. With such structure, the rim of the frame can be smaller, even when A/P ratio is less than 0.5, the hotspot phenomenon can be avoided. As such, the present invention improves the optical characteristics of the backlight module and the display quality of the display device, as well as simplifies the assembly and reduces assembly cost.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: November 1, 2016
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Chong Xiong, Kuang-yao Chang
  • Patent number: 9435928
    Abstract: A light guiding system includes an ambient light gathering system, multiple light guiding devices and a wedge light guiding bar. The ambient light gathering system facing ambient light is used for absorbing the ambient light. Each light guiding device absorbs the absorbed light. The wedge light guiding bar has a light-out surface and a light-in surface coupled to the light-out surface. The light-in surface is a wide surface coupled to an inclined surface. The light-out surface is opposite to the inclined surface and next to a light-in side of a light guide plate. The wedge light guiding bar for use in the light guiding system, an edge-lighting backlight module and an LCD device can reduce cost of material and weight. Also, the light uniformity of the light output end is improved and the optical quality of the edge-lighting backlight module is raised.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: September 6, 2016
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Che-chang Hu, Kuang-yao Chang, Chao Ning, Yong Fan
  • Patent number: 9429303
    Abstract: Disclosed are a backlight source and a manufacturing method thereof, wherein the method of manufacturing the backlight source comprises the following steps: forming a base layer, a dielectric layer, and a conductive layer stacked successively from bottom to top to form a semi-finished PCB; the semi-finished PCB is divided into a light bar area and a heat dissipating area; the conductive layer is divided into a first conductive area and a second conductive area insulated from each other; etching the second conductive area to form a preset conductive circuit; spraying insulating paint upon the conductive layer to form the insulating layer, thus producing the PCB; and installing the LED onto the light bar area and making it in electrical connection with the second conductive area.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: August 30, 2016
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Che-Chang Hu, Kuang Yao Chang, Qian Cao, Chong Xiong
  • Publication number: 20150300609
    Abstract: Disclosed are a backlight source and a manufacturing method thereof, wherein the method of manufacturing the backlight source comprises the following steps: forming a base layer, a dielectric layer, and a conductive layer stacked successively from bottom to top to form a semi-finished PCB; the semi-finished PCB is divided into a light bar area and a heat dissipating area; the conductive layer is divided into a first conductive area and a second conductive area insulated from each other; etching the second conductive area to form a preset conductive circuit; spraying insulating paint upon the conductive layer to form the insulating layer, thus producing the PCB; and installing the LED onto the light bar area and making it in electrical connection with the second conductive area.
    Type: Application
    Filed: February 21, 2013
    Publication date: October 22, 2015
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Che-Chang Hu, Kuang Yao Chang, Qian Cao, Chong Xiong
  • Publication number: 20150305164
    Abstract: A method for manufacturing a printed circuit board of a backlight module is provided. The printed circuit board includes a light bar region and a heat dissipating region. The light bar region used for mounting a light bar of the backlight module and formed with a conductive circuit for supplying power for the light bar. The heat dissipating region is connected with the light bar region. A connection location of the light bar region and the heat dissipating region is subjected to cutting to form a slot located at a side of the printed circuit board in order to prevent short-circuiting between the heat dissipating region and the conductive circuit of the light bar region. The cutting is made to partly penetrate through the thickness of a dielectric layer on which the conductive circuit is formed in order to completely separate the light bar region from the heat dissipating region.
    Type: Application
    Filed: January 11, 2015
    Publication date: October 22, 2015
    Applicant: Shenzhen China Star Optoelectrics Technology Co., Ltd.
    Inventors: Che-chang HU, Kuang-Yao CHANG, Qian CAO
  • Publication number: 20150293293
    Abstract: A light guiding system includes an ambient light gathering system, multiple light guiding devices and a wedge light guiding bar. The ambient light gathering system facing ambient light is used for absorbing the ambient light. Each light guiding device absorbs the absorbed light. The wedge light guiding bar has a light-out surface and a light-in surface coupled to the light-out surface. The light-in surface is a wide surface coupled to an inclined surface. The light-out surface is opposite to the inclined surface and next to a light-in side of a light guide plate. The wedge light guiding bar for use in the light guiding system, an edge-lighting backlight module and an LCD device can reduce cost of material and weight. Also, the light uniformity of the light output end is improved and the optical quality of the edge-lighting backlight module is raised.
    Type: Application
    Filed: January 17, 2013
    Publication date: October 15, 2015
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Che-chang Hu, Kuang-yao Chang, Chao Ning, Yong Fan
  • Publication number: 20150253485
    Abstract: The present invention provides a backlight module and display device thereof, including light-guiding plate, frame and a plurality of light sources disposed near incident surface of the light-guiding plate. The backlight module further includes an opaque layer, with one part attached to the frame and the other part disposed on light-emitting surface of light-guiding plate. The opaque layer shields and absorbs partial light emitted directly from the plurality of light sources and light from light-emitting surface covered by opaque layer. With such structure, the rim of the frame can be smaller, even when NP ratio is less than 0.5, the hotspot phenomenon can be avoided. As such, the present invention improves the optical characteristics of the backlight module and the display quality of the display device, as well as simplifies the assembly and reduces assembly cost.
    Type: Application
    Filed: December 5, 2012
    Publication date: September 10, 2015
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chong Xiong, Kuang-yao Chang
  • Patent number: 9084345
    Abstract: The present invention discloses a backlight module, a printed circuit board used for a backlight module, and a manufacturing method for the same. The printed circuit board comprises a light bar region and a heat dissipating region. The light bar region used for mounting a light bar of the backlight module and formed with a conductive circuit for supplying power for the light bar; and the heat dissipating region connected with the light bar region, wherein, a connection location of the light bar region and the heat dissipating region disposes with a cutting slot and the cutting slot locates at a side of the printed circuit board for mounting the light bar in order to prevent a short-circuit connection between the heat dissipating region and the conductive circuit of the light bar region through the cutting slot. The present invention can avoid the short circuit problem due to uncompleted etching of the conductive layer on the heat dissipating region of the printed circuit board.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: July 14, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Che-chang Hu, Kuang-Yao Chang, Qian Cao
  • Patent number: 9063367
    Abstract: A direct-type backlight unit is provided for improving a dark area problem on the diffusion plate. The direct-type backlight unit includes an optical sheet; a diffusion plate for supporting the optical sheet; a bottom plate, disposed below the diffusion plate; a plurality of light emitting devices (LEDs), disposed between the diffusion plate and the bottom plate; a plurality of supporting elements, disposed between the diffusion plate and the bottom plate and fixed on the bottom plate, each supporting element including: a top portion having a light transmissive section through which light emitted by the LEDs pass; and a bottom portion, fixed on the bottom plate.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: June 23, 2015
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Che-Chang Hu, Kuang-Yao Chang, Zan-Jia Su
  • Patent number: 8908123
    Abstract: A direct-light type backlight module and a liquid crystal display (LCD) are proposed. The direct-light type backlight module includes a base frame, a light source, a diffuser plate, and a plurality of support pins. The light source is disposed on the base frame. The diffuser plate is disposed on the light source. The plurality of support pins are disposed on the base frame and support the diffuser plate. At least one of the plurality of support pins is made of first transparent materials, or is made of is made of top and bottom connected second transparent materials and opaque materials. Through the abovementioned method, support pin shadow mura could be successfully prevented, and a backlight effect and a display effect could be effectively enhanced when light emitted by the light source shines on the at least one of the plurality of support pins.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: December 9, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Kuang-Yao Chang, Hongye Liu, Panpan Fu
  • Patent number: 8872973
    Abstract: A light guiding system, an edge type backlight module and a liquid crystal display are disclosed. The light guiding system includes an ambient light collection system facing toward ambient light to absorb the ambient light and to generate absorbed light, a plurality of light guiding devices, and at least a first and a second light guiding bar. Each of the light guiding devices includes a light emitting end and a light incident end. The light incident ends of the optical fibers are arranged close to the ambient light collection system, and the lights entered from the light incident ends are propagated toward the light emitting ends. Each of the light guiding bars includes a light emitting surface, a light incident surface connected to the light emitting surface, and a first lateral side opposite to the light incident surface.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: October 28, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Che-chang Hu, Kuang-yao Chang, Chao Ning, Yong Fan
  • Publication number: 20140204313
    Abstract: A light guiding system, an edge type backlight module and a liquid crystal display are disclosed. The light guiding system includes an ambient light collection system facing toward ambient light to absorb the ambient light and to generate absorbed light, a plurality of light guiding devices, and at least a first and a second light guiding bar. Each of the light guiding devices includes a light emitting end and a light incident end. The light incident ends of the optical fibers are arranged close to the ambient light collection system, and the lights entered from the light incident ends are propagated toward the light emitting ends. Each of the light guiding bars includes a light emitting surface, a light incident surface connected to the light emitting surface, and a first lateral side opposite to the light incident surface.
    Type: Application
    Filed: January 28, 2013
    Publication date: July 24, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Che-chang Hu, Kuang-yao Chang, Chao Ning, Yong Fan
  • Patent number: 8777438
    Abstract: A direct type backlight unit includes an optical film, a diffusion plate for supporting the optical film, a bottom plate disposed under the diffusion plate, a plurality of light emitted diodes disposed between the diffusion plate and the bottom plate, and a plurality of support structures disposed between the diffusion plate and the bottom plate and fixed on the bottom plate, wherein each support structure is disposed between two adjacent light emitting diodes, a height of each support structure is smaller than a distance between the bottom plate and the diffusion plate. The direct type backlight unit can improve the problem that a dark area occurs on the diffusion plate.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: July 15, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Kuang-Yao Chang, Zan-Jia Su
  • Publication number: 20140192514
    Abstract: The present invention discloses a backlight module, a printed circuit board used for a backlight module, and a manufacturing method for the same. The printed circuit board comprises a light bar region and a heat dissipating region. The light bar region used for mounting a light bar of the backlight module and formed with a conductive circuit for supplying power for the light bar; and the heat dissipating region connected with the light bar region, wherein, a connection location of the light bar region and the heat dissipating region disposes with a cutting slot and the cutting slot locates at a side of the printed circuit board for mounting the light bar in order to prevent a short-circuit connection between the heat dissipating region and the conductive circuit of the light bar region through the cutting slot. The present invention can avoid the short circuit problem due to uncompleted etching of the conductive layer on the heat dissipating region of the printed circuit board.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 10, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Che-chang Hu, Kuang-Yao Chang, Qian Cao
  • Patent number: 8770805
    Abstract: The utility model discloses a backlight module for a liquid crystal display device and a liquid crystal display device. The backlight module comprises an LED and a backplane, wherein the backlight module also comprises a heatsink plate arranged on the outer of the backplane; and the LED is linked with the heatsink plate in the mode of heat conduction. The utility model, by arranging the LED on an extra heatsink plate which is arranged on the outer of the backplane, dissipates outward the heat emitted by the LED through the heatsink plate, lowers the temperature of the backlight cavity, and protects the optical components. At the same time, because the backplane is not directly used to dissipate heat, the gradient of temperature distribution on the backplane is reduced, thus, the gradient of temperature distribution in the backlight cavity is reduced and stress of the backlight cavity induced by the temperature gradient is also reduced.
    Type: Grant
    Filed: December 3, 2011
    Date of Patent: July 8, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Kuang-yao Chang, Jianfa Huang, Chechang Hu