Patents by Inventor Guowei Zha

Guowei Zha 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: 11056661
    Abstract: The present invention provides a color conversion layer, a manufacturing method of the color conversion layer, and a display panel. The color conversion layer is used in a display panel having a direct surface light source. The color conversion layer includes a quantum dot film and a functional film. The functional film is arranged at one side of the quantum dot film facing the direct surface light source. A light wave emitted by the direct surface light source is transmitted through the functional film into the quantum dot film. A light wave excited by the quantum dot film is reflected into the quantum dot film through the functional film.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: July 6, 2021
    Inventors: Guiyang Zhang, Guowei Zha
  • Patent number: 11054698
    Abstract: The present disclosure discloses a backlight module and a display device. The light emission direction of at least one of the lamp source and the fluorescent film is provided with a diffusely reflecting layer. The diffusely reflecting layer arranged above the lamp source diffusely reflects pump light emitted from the lamp source, which may enhance uniformity of the pump light. The diffusely reflecting layer arranged above the fluorescent film scatters light emitted from the fluorescent film, scatters the light and distributes the light to a larger range, which may improve light mixing uniformity and improve the uniformity of light emission brightness.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: July 6, 2021
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Guiyang Zhang, Guowei Zha, Hongqing Cui, Yong Yang
  • Publication number: 20210191193
    Abstract: A liquid crystal display device is provided. The liquid crystal display device mainly includes a liquid crystal panel, a first polarizer, a second polarizer, and a backlight module, wherein the first polarizer is disposed under the liquid crystal panel, the second polarizer is disposed above the liquid crystal panel, and the backlight module is disposed under the first polarizer. Furthermore, the liquid crystal display device has a sensing area and a sensor, the backlight module has an opening corresponding to the sensing area, and the sensor is disposed inside or below the opening. Thus, when the liquid crystal display device is in a power-off state, a user cannot see the sensor from outside, and when the liquid crystal display device is in a power-on state, the user can see the sensor.
    Type: Application
    Filed: November 1, 2018
    Publication date: June 24, 2021
    Inventors: Fancheng LIU, Guowei ZHA
  • Publication number: 20210181577
    Abstract: A thin backlight module and a manufacturing method of the thin backlight module are provided. The thin backlight module includes a drive substrate, multiple light emitting sources, a fluorescence layer, and multiple particle micro-structures. The light emitting sources are arranged in an array on the drive substrate. The surface micro-structures are arranged on a surface of the fluorescence layer. Each surface micro-structure is arranged corresponding to each light emitting source. Each particle micro-structure is arranged corresponding to each surface micro-structure. Each particle micro-structure and each surface micro-structure together form a guiding layer for dispersing light from a corresponding one of the light emitting sources. Thereby, a smaller light mixing distance and an ultra-thin backlight module thickness are achieved.
    Type: Application
    Filed: January 3, 2019
    Publication date: June 17, 2021
    Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Guowei ZHA
  • Patent number: 11024239
    Abstract: The present disclosure relates to a liquid crystal display including a liquid crystal panel. The liquid crystal panel includes a plurality of photodetectors, a plurality of first sub-pixels and a plurality of second sub-pixels respectively corresponding to the photodetectors. Each of the photodetectors partially overlaps with an opening area of the corresponding first sub-pixel. The liquid crystal display further includes a backlight module facing toward the liquid crystal panel having a first light emission section and a second light emission section. The first light emission section faces toward the first sub-pixels, and the second light emission section faces toward the second sub-pixels. A light emission brightness of the first light emission section is greater than the light emission brightness of the second light emission section.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: June 1, 2021
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Guowei Zha
  • Patent number: 11024238
    Abstract: A high dynamic contrast image display method and device based on a partitioned backlight is disclosed. The method includes steps of: S1: obtaining a brightness information of an arbitrary pixel of an image, S2: obtaining a low-frequency illumination signal of the arbitrary pixel by gaussian filtering, S3: according to a space division of a partitioned backlight, diving the low-frequency illumination signals as same M*N partitions, S4: for anyone of the M*N partitions, calculating a maximum value of the low-frequency illumination signals of a current partition, and S5: performing a linear compression to the low-frequency illumination signal in the current partition. In the invention, the low-frequency illumination signals are subjected to a linear compression according to the luminance range that covered by the actual backlight. Contrast spatial adaptation can be performed within the backlight brightness range, while spatial details corresponding to high-frequency reflected signals are reserved.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: June 1, 2021
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Guowei Zha
  • Patent number: 10978509
    Abstract: The present invention provides a display panel and a method of manufacturing the same. The display panel employs a target light transmission layer disposed on a target light conversion layer for transmitting the target light generated by the target light conversion layer and reflecting the excitation light passing through the target light conversion layer, such that the target light emitted by the sub-pixel units is mixed with a small amount of excitation light or even without excitation light, so that the target light emitted by the sub-pixel units is relatively pure, thereby solving the technical problem that the existing micro-display technology has defects.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: April 13, 2021
    Inventors: Guiyang Zhang, Guowei Zha
  • Publication number: 20210082355
    Abstract: A high dynamic contrast image display method and device based on a partitioned backlight is disclosed. The method includes steps of: S1: obtaining a brightness information of an arbitrary pixel of an image, S2: obtaining a low-frequency illumination signal of the arbitrary pixel by gaussian filtering, S3: according to a space division of a partitioned backlight, diving the low-frequency illumination signals as same M*N partitions, S4: for anyone of the M*N partitions, calculating a maximum value of the low-frequency illumination signals of a current partition, and S5: performing a linear compression to the low-frequency illumination signal in the current partition. In the invention, the low-frequency illumination signals are subjected to a linear compression according to the luminance range that covered by the actual backlight. Contrast spatial adaptation can be performed within the backlight brightness range, while spatial details corresponding to high-frequency reflected signals are reserved.
    Type: Application
    Filed: April 20, 2018
    Publication date: March 18, 2021
    Inventor: Guowei ZHA
  • Publication number: 20210082356
    Abstract: The present disclosure relates to a liquid crystal display including a liquid crystal panel. The liquid crystal panel includes a plurality of photodetectors, a plurality of first sub-pixels and a plurality of second sub-pixels respectively corresponding to the photodetectors. Each of the photodetectors partially overlaps with an opening area of the corresponding first sub-pixel. The liquid crystal display further includes a backlight module facing toward the liquid crystal panel having a first light emission section and a second light emission section. The first light emission section faces toward the first sub-pixels, and the second light emission section faces toward the second sub-pixels. A light emission brightness of the first light emission section is greater than the light emission brightness of the second light emission section.
    Type: Application
    Filed: April 20, 2018
    Publication date: March 18, 2021
    Inventor: Guowei ZHA
  • Patent number: 10901250
    Abstract: Disclosed is a liquid crystal panel, comprising a plurality of pixels and a plurality of photodetectors, wherein each pixel comprises a white sub pixel, and an opening area of one white sub pixel partially overlaps with at least one photodetector, which corresponds to the white sub pixel for at least a portion of the white sub pixels, individually. Further disclosed is a liquid crystal display including the liquid crystal panel. The high penetration rate of the white sub pixels is utilized to compensate for the brightness loss caused by the occlusion of the photodetectors, so that the liquid crystal panel can achieve the purpose of even display while having the photodetectors.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: January 26, 2021
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Guowei Zha
  • Patent number: 10859864
    Abstract: The present invention provides a display device including: a first liquid crystal cell including a first electrode layer, a polymer dispersed liquid crystal layer, and a first array substrate, wherein the first array substrate includes a second electrode layer, the second electrode layer includes a plurality of first pixel electrodes, and a light source is disposed at a side of the first liquid crystal cell.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: December 8, 2020
    Inventors: Yong Yang, Xin Zhang, Guowei Zha, Guiyang Zhang
  • Patent number: 10845641
    Abstract: A direct backlight module is disclosed, and includes: a substrate having a driving circuit layer; multiple blue LED chips disposed on the substrate, and the multiple blue LED chips are electrically connected to the driving circuit layer; an optical conversion layer covered on the multiple blue LED chips, wherein the optical conversion layer includes a colloidal material, multiple phosphor particles and multiple haze particles disposed in the colloidal material, the optical conversion layer converts a blue light emitted from the multiple blue LED chips into a white light; and a transparent dielectric layer and a metal grating layer sequentially formed on the optical conversion layer. A liquid crystal display device is also disclosed. The direct backlight module can reduce the thickness of the liquid crystal device, which is beneficial to realize a thin and narrow-frame liquid crystal display device.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: November 24, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Guowei Zha, Hongqing Cui
  • Patent number: 10840304
    Abstract: The present disclosure provides a circular polarizer for use on a display including a transparent substrate disposed on the display and a plurality of strip dielectric wire grids disposed on the transparent substrate; each dielectric wire grid is provided with a wire grid array formed by a plurality of wire grids, and each of the dielectric wire grids respectively corresponds to a region above one of R sub-pixel unit, G sub-pixel unit and B sub-pixel unit of the display and has a corresponding thickness, so that each of the dielectric wire grids forms a quarter-phase delay on the sub-pixel units of the corresponding display. The implementation of the disclosure can solve the problem that the traditional organic phase retarder can not achieve the wide circular partial effect, and improve the visual effect.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: November 17, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Guowei Zha
  • Publication number: 20200355953
    Abstract: Disclosed is a liquid crystal panel, comprising a plurality of pixels and a plurality of photodetectors, wherein each pixel comprises a white sub pixel, and an opening area of one white sub pixel partially overlaps with at least one photodetector, which corresponds to the white sub pixel for at least a portion of the white sub pixels, individually. Further disclosed is a liquid crystal display including the liquid crystal panel. The high penetration rate of the white sub pixels is utilized to compensate for the brightness loss caused by the occlusion of the photodetectors, so that the liquid crystal panel can achieve the purpose of even display while having the photodetectors.
    Type: Application
    Filed: April 20, 2018
    Publication date: November 12, 2020
    Inventor: Guowei ZHA
  • Patent number: 10824008
    Abstract: The present disclosure provides backlight module and display module. The backlight module may include: a display module and a backlight module, the backlight module is configured to face to the display module, the display module may include a first substrate, a second substrate and a liquid crystal layer interposed between the first substrate and the second substrate; the display module comprising a display region and a non-display region, at least one side of the second substrate extends along the non-display region and is bent below the backlight module so as to cover a portion of the backlight module.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: November 3, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Guowei Zha, Hongqing Cui, Changwen Ma, Yan Cheng
  • Patent number: 10816850
    Abstract: The present invention teaches a direct-lit backlight module and a related manufacturing method. The direct-lit backlight module includes a driver substrate, a reflection layer on the driver substrate, multiple mini-LEDs arranged in an array on the reflection layer, multiple reflection bumps on the reflection layer among the mini-LEDs, and an optical film set on the reflection layer, the mini-LEDs, and the reflection bumps. The mini-LEDs are electrically connected to the driver substrate. The reflection bumps jointly form a mesh dot structure. When light passes through the mesh dot structure, the light is scattered by the mesh dot structure to various directions, thereby enhancing the lighting efficiency of the direct-lit backlight module.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: October 27, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Guowei Zha, Changwen Ma
  • Publication number: 20200320939
    Abstract: The invention provides an LCD, comprising a MINI LED substrate, a plurality of MINI LED chips disposed on one side of the MINI LED substrate, a MINI LED driving IC disposed on the other side of the MINI LED substrate, and a fluorescent film covering the plurality of MINI LED chips, the MINI LED driving IC driving the plurality of MINI LED chips to emit light. Compared to the prior art, the invention, without disposing the MINILED driving IC in FPCA, saves a connector, avoids the design space reduction in FPCA, and effectively reduces the routing difficulty of MINI LED driving IC and the plurality of MINI LED chips, thereby reduces the manufacturing cost.
    Type: Application
    Filed: September 22, 2018
    Publication date: October 8, 2020
    Inventors: Changwen Ma, Guowei Zha, Zhou Zhang
  • Patent number: 10795226
    Abstract: The present invention provides a display device which includes a first substrate, a second substrate, a third substrate, and a fourth substrate. The first substrate and the second substrate are arranged opposite to each other. The third substrate and the fourth substrate are arranged opposite to each other. A liquid crystal layer is located between the first substrate and the second substrate. A bistable polymer dispersed liquid crystal layer is located between the third substrate and the fourth substrate. A band-pass filter is located between the liquid crystal layer and the bistable polymer dispersed liquid crystal layer. A backlight module is located on one side of the fourth substrate away from the third substrate.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: October 6, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yong Yang, Guowei Zha, Xin Zhang
  • Patent number: 10790314
    Abstract: A display panel and a display device comprising the same are provided. The display panel includes a planar substrate and a boundary substrate formed by bending the boundary of the planar substrate; and scan lines arranged on the planar substrate and extended to the boundary substrate. The width of the scan line on the bended position of the planar substrate is larger than the width of the remaining scan line.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: September 29, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Guowei Zha
  • Patent number: 10782335
    Abstract: Disclosed is a backlight test circuit including N circuit blocks. Each circuit block includes M mini-LED circuits, and each mini-LED circuit includes L mini-LEDs and a switching circuit. The L mini-LEDs are connected in parallel or in serial as a mini-LED set. The switching circuit controls the turning on and the turning off of the mini-LED set according to a control signal. N, M and L are positive integers. During a backlight test, in each circuit block, at least one of the mini-LED sets is turned on. By using this backlight test circuit, the abnormal mini-LED circuit can be found. Thus, a producer can only execute a rework process for the abnormal mini-LED circuit without extra cost.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: September 22, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Guowei Zha, Hongqing Cui