Patents by Inventor Changwen MA
Changwen MA 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: 11972740Abstract: The present application provides a field sequential liquid crystal display device. The field sequential liquid crystal display device includes a liquid crystal display module including a plurality of display data writing periods and a plurality of blank periods, wherein between every two adjacent ones of the display data writing periods is provided with one of the plurality of blank periods, and the liquid crystal display module is configured to receive a display data during the plurality of the display data writing periods; and a functional module is configured to detect a functional data in at least one of the plurality of blank periods.Type: GrantFiled: June 7, 2021Date of Patent: April 30, 2024Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.Inventors: Changwen Ma, Zhou Zhang, Guowei Zha
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Patent number: 11955096Abstract: A display method of a display panel, a display device, and a server are disclosed. The display method divides an initial image into a plurality of sub-frame images having a same frequency, and the frequency of the sub-frame images is a multiple of a frequency of the initial image. The sub-frame images are input into the display panel in sequence and are combined to obtain a target image. The target image is used to drive the display panel to display the initial image, thereby reducing a refresh rate of the display panel for inputting data. Therefore, the display panel can realize low frequency input and prevent frame loss.Type: GrantFiled: July 12, 2021Date of Patent: April 9, 2024Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Changwen Ma, Zhou Zhang, Guowei Zha
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Publication number: 20240046877Abstract: The embodiment of the present application discloses a display device, a display system and a distributed function system. The initial pixel driving data corresponding to the image to be displayed, which is received, is segmented into a plurality of pixel driving data blocks by the management chip. With the display screen comprising a plurality of display modules, and the pixel driving data blocks are written to the driving circuits of the corresponding display modules through the data connection lines based on control signals. The driving circuit is employed to drive pixels in the display module to work according to the pixel driving data block, which is received to meet the display requirements of full HD and resolutions above full HD.Type: ApplicationFiled: December 24, 2021Publication date: February 8, 2024Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.Inventors: Changwen MA, Guowei ZHA, Guanghui LIU, Zhifu LI, Xiaolin YAN, Wanliang FENG
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Publication number: 20240035886Abstract: A display panel has a display area and a non-display area surrounding the display area, and includes photosensitive components and a photosensitive driving circuit. The photosensitive components are used to sense ambient light, and the photosensitive driving circuit is connected to the photosensitive components to drive the photosensitive components. The photosensitive driving circuit is disposed in the non-display area, and at least a part of the photosensitive components is disposed in the non-display area.Type: ApplicationFiled: December 15, 2021Publication date: February 1, 2024Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Zhou Zhang, Changwen Ma, Pan Xu, Guowei Zha, Xiaoyan Niu
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Publication number: 20240029675Abstract: The present disclosure provides a display device and a driving method thereof. A plurality of backlight partitions and a plurality of display partitions are arranged in a one-to-one correspondence, each backlight partition independently provides backlight for a corresponding display partition, and the backlight partition corresponding to each display partition is turned off in a scanning phase and a liquid crystal deflection phase, and is turned on in a light-emitting phase. While brightness requirements of a display device with high-resolution are met, a display effect of the display device is better.Type: ApplicationFiled: October 13, 2021Publication date: January 25, 2024Inventors: Zhou ZHANG, Changwen MA, Pan XU, Guowei ZHA
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Publication number: 20240012298Abstract: A display panel and a display device are provided. The display panel comprises sub-pixel electrodes and data line groups. The data line group includes at least two sub-data line groups. The sub-pixel electrode includes at least two sub-pixel electrode sections. By dispersing the data lines in the data line group into each sub-data line group and arranging the plurality of the sub-data line groups on two sides of the sub-pixel electrode sections in each of the columns, the shading area of each of the data line groups can be reduced, thereby improving the problem of dark stripes on the display panel.Type: ApplicationFiled: August 9, 2021Publication date: January 11, 2024Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.Inventors: Yantao LU, Changwen MA, Guanghui LIU, Chao WANG
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Publication number: 20240013746Abstract: The present application provides a field sequential liquid crystal display device. The field sequential liquid crystal display device includes a liquid crystal display module including a plurality of display data writing periods and a plurality of blank periods, wherein between every two adjacent ones of the display data writing periods is provided with one of the plurality of blank periods, and the liquid crystal display module is configured to receive a display data during the plurality of the display data writing periods; and a functional module is configured to detect a functional data in at least one of the plurality of blank periods.Type: ApplicationFiled: June 7, 2021Publication date: January 11, 2024Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.Inventors: Changwen MA, Zhou ZHANG, Guowei ZHA
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Patent number: 11830277Abstract: A display panel is provided, comprising a backlight module, a first substrate, a liquid crystal layer, a second substrate, and a glass cover, wherein the second substrate comprises a fingerprint identification layer configured for identifying information from a fingerprint of a user. The second substrate provided with the fingerprint identification layer is disposed close to the glass cover, making the fingerprint identification layer closer to the fingerprint of the user, shortening a path of the light reflected by the fingerprint to the fingerprint identification sensors, and improving fingerprint identification effectiveness.Type: GrantFiled: March 27, 2020Date of Patent: November 28, 2023Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Zhou Zhang, Changwen Ma, Pan Xu
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Patent number: 11798512Abstract: A display device is provided. The display device inputs a preset gray scale voltage to sub-pixels during a first time period within one frame in a second driving mode, thereby increasing a liquid crystal flipping speed within one frame, and therefore improving a response time of the display device in switching between black screen and white screen.Type: GrantFiled: November 14, 2022Date of Patent: October 24, 2023Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Xingru Chen, Changwen Ma, Pengfei Zhang, Zhou Zhang
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Publication number: 20230237972Abstract: A display method of a display panel, a display device, and a server are disclosed. The display method divides an initial image into a plurality of sub-frame images having a same frequency, and the frequency of the sub-frame images is a multiple of a frequency of the initial image. The sub-frame images are input into the display panel in sequence and are combined to obtain a target image. The target image is used to drive the display panel to display the initial image, thereby reducing a refresh rate of the display panel for inputting data. Therefore, the display panel can realize low frequency input and prevent frame loss.Type: ApplicationFiled: July 12, 2021Publication date: July 27, 2023Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Changwen Ma, Zhou Zhang, Guowei Zha
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Patent number: 11353747Abstract: A backlight module and a liquid crystal display are provided. The backlight module has a substrate, a plurality of soldering pads, and a reflective pattern layer. The soldering pads are distributed on the substrate and each of the soldering pads has a soldering pad size. The reflective pattern layer covers the soldering pads and the substrate. The reflective pattern layer has openings, positions of the openings correspond to positions of the soldering pads, each of the openings has an opening size, and the opening size is smaller than the corresponding soldering pad size. The backlight module is provided with the openings in the reflective pattern corresponding to the positions of the soldering pads, and the opening size of the openings is smaller than the soldering pad size of the soldering pads, thereby increasing a ratio of the reflective pattern layer to the substrate. Therefore, brightness is improved.Type: GrantFiled: December 26, 2018Date of Patent: June 7, 2022Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Guowei Zha, Changwen Ma
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Publication number: 20220122371Abstract: A display panel is provided, comprising a backlight module, a first substrate, a liquid crystal layer, a second substrate, and a glass cover, wherein the second substrate comprises a fingerprint identification layer configured for identifying information from a fingerprint of a user. The second substrate provided with the fingerprint identification layer is disposed close to the glass cover, making the fingerprint identification layer closer to the fingerprint of the user, shortening a path of the light reflected by the fingerprint to the fingerprint identification sensors, and improving fingerprint identification effectiveness.Type: ApplicationFiled: March 27, 2020Publication date: April 21, 2022Inventors: Zhou ZHANG, Changwen MA, Pan XU
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Publication number: 20220058360Abstract: A liquid crystal display device, including a fingerprint identification module, a backlight module, a liquid crystal display panel, and a cover plate; the fingerprint identification module has an infrared emitter, an infrared receiver, and a fingerprint optical film. The infrared emitter is positioned at a side of the fingerprint optical film, the infrared receiver is attached to a lower surface of the fingerprint optical film and completely covers the fingerprint optical film, and the infrared receiver is a glass substrate optical readout infrared sensor.Type: ApplicationFiled: March 27, 2020Publication date: February 24, 2022Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.Inventors: Zhou ZHANG, Pan XU, Changwen MA
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Publication number: 20210295750Abstract: A special-shaped display panel and a display device are provided. The special-shaped display panel includes a display region provided for displaying images, the display region having a notch after special-shaped cutting; and a non-display region including a peripheral layout region and a notch region corresponding to the notch of the display region, wherein the display region is divided into a plurality of common electrode regions according to extension of at least one edge of the notch region, at least two of the plural common electrode regions have different common voltage configurations. Mura effect and display quality are improved.Type: ApplicationFiled: September 12, 2018Publication date: September 23, 2021Applicant: Wuhan China Star Optoelectronics Technology Co.Ltd.Inventors: Zhou ZHANG, Yucheng TSAI, Changwen MA, Pan XU
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Publication number: 20210278726Abstract: A backlight module and a liquid crystal display are provided. The backlight module has a substrate, a plurality of soldering pads, and a reflective pattern layer. The soldering pads are distributed on the substrate and each of the soldering pads has a soldering pad size. The reflective pattern layer covers the soldering pads and the substrate. The reflective pattern layer has openings, positions of the openings correspond to positions of the soldering pads, each of the openings has an opening size, and the opening size is smaller than the corresponding soldering pad size. The backlight module is provided with the openings in the reflective pattern corresponding to the positions of the soldering pads, and the opening size of the openings is smaller than the soldering pad size of the soldering pads, thereby increasing a ratio of the reflective pattern layer to the substrate. Therefore, brightness is improved.Type: ApplicationFiled: December 26, 2018Publication date: September 9, 2021Inventors: Guowei ZHA, Changwen MA
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Patent number: 11106078Abstract: A display panel and a display device are provided. The display panel includes an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate. The array substrate includes at least one transparent support column for supporting the array substrate and the color filter substrate to form the liquid crystal layer, and at least one fingerprint sensor disposed at a position corresponding to the transparent support column. The display device includes the display panel.Type: GrantFiled: October 17, 2019Date of Patent: August 31, 2021Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Zhou Zhang, Changwen Ma, Pan Xu
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Patent number: 11092849Abstract: The present invention discloses a light emitting diode (LED) backlight device and LED display device, including a plurality of backlight partitions; a reflective material layer covering a surface of the backlight substrate; a plurality of metal traces disposed within the backlight partitions and disposed between the backlight substrate and the reflective material layer; a plurality of pad openings penetrating from a surface of the reflective material layer to a surface of the metal traces. An orthographic projection of the pad openings projected toward the backlight substrate is completely within an area of the metal traces; and a plurality of solder paste application regions located in the pad openings. The LED display device assembled by the LED backlight device according to the present invention improves the yield of solder paste printing and die bonding, improves the light reflection, reduces the loss of light energy, and improves the light efficiency.Type: GrantFiled: September 11, 2018Date of Patent: August 17, 2021Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNLOGY CO., LTD.Inventors: Changwen Ma, Guowei Zha, Zhou Zhang
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Publication number: 20210223630Abstract: The present invention discloses a light emitting diode (LED) backlight device and LED display device, including a plurality of backlight partitions; a reflective material layer covering a surface of the backlight substrate; a plurality of metal traces disposed within the backlight partitions and disposed between the backlight substrate and the reflective material layer; a plurality of pad openings penetrating from a surface of the reflective material layer to a surface of the metal traces. An orthographic projection of the pad openings projected toward the backlight substrate is completely within an area of the metal traces; and a plurality of solder paste application regions located in the pad openings. The LED display device assembled by the LED backlight device according to the present invention improves the yield of solder paste printing and die bonding, improves the light reflection, reduces the loss of light energy, and improves the light efficiency.Type: ApplicationFiled: September 11, 2018Publication date: July 22, 2021Inventors: Changwen MA, Guowei ZHA, Zhou ZHANG
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Patent number: 10984215Abstract: A method of recognizing a fingerprint is implemented by dividing a sensor matrix of a mobile terminal into a plurality of blocks by rows. Each of the blocks is under control of an independent switch terminal. When performing fingerprint unlocking, only an area covered by the fingerprint is being scanned, while an area not covered by the fingerprint is not to be scanned, thereby significantly reducing a scanning area, shortening a scanning time, improving unlocking efficiency, fulfilling fast fingerprint unlocking, and reducing power consumption. A mobile terminal is also provided and includes a multiplexer configured to divide the sensor matrix into a plurality of blocks. Each of the blocks can independently perform fingerprint recognition scanning. When fingerprint unlocking is carried out, there is no need to scan an entire area of the sensor matrix, thereby improving unlocking efficiency and saving electric energy.Type: GrantFiled: May 10, 2019Date of Patent: April 20, 2021Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Zhou Zhang, Yucheng Tsai, Changwen Ma, Pan Xu
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Publication number: 20210033918Abstract: A display panel and a display device are provided. The display panel includes an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate. The array substrate includes at least one transparent support column for supporting the array substrate and the color filter substrate to form the liquid crystal layer, and at least one fingerprint sensor disposed at a position corresponding to the transparent support column. The display device includes the display panel.Type: ApplicationFiled: October 17, 2019Publication date: February 4, 2021Inventors: Zhou ZHANG, Changwen MA, Pan XU