Patents by Inventor Chengtan Zhao

Chengtan Zhao 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: 11609451
    Abstract: The present disclosure relates to a display device and a preparation method of the display device, and relates to the field of display technology. The display device includes a lower polarizing plate and an upper polarizing plate arranged oppositely, and an embedded polarizing layer located between the lower polarizing plate and the upper polarizing plate. The embedded polarizing layer is located between the lower polarizing plate and the upper polarizing plate, and includes a first orientation layer, a second orientation layer, and a polarizing material layer. The polarizing material layer includes a liquid crystal material. The material layer is arranged between the first orientation layer and the second orientation layer, and is in contact with both the first orientation layer and the second orientation layer. The present disclosure can enhance the contrast of the display device and improve the display effect of the display device.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: March 21, 2023
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Chengtan Zhao, Guangcai Yuan
  • Publication number: 20220137453
    Abstract: The present disclosure relates to a display device and a preparation method of the display device, and relates to the field of display technology. The display device includes a lower polarizing plate and an upper polarizing plate arranged oppositely, and an embedded polarizing layer located between the lower polarizing plate and the upper polarizing plate. The embedded polarizing layer is located between the lower polarizing plate and the upper polarizing plate, and includes a first orientation layer, a second orientation layer, and a polarizing material layer. The polarizing material layer includes a liquid crystal material. The material layer is arranged between the first orientation layer and the second orientation layer, and is in contact with both the first orientation layer and the second orientation layer. The present disclosure can enhance the contrast of the display device and improve the display effect of the display device.
    Type: Application
    Filed: March 26, 2020
    Publication date: May 5, 2022
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Chengtan ZHAO, Guangcai YUAN
  • Patent number: 11322485
    Abstract: The present disclosure relates to the field of display, specifically, to a mass transfer method for a light-emitting unit, an array substrate, and a display device. The method comprises: providing a plurality of light-emitting units in an array, wherein each light-emitting unit comprises a first electrode extending to a side edge of the light-emitting unit; providing a base substrate comprising a plurality of areas in an array, each area comprising a second electrode and an electro-curable adhesive thereon; picking up the light-emitting units by a transfer device; applying voltages to the first and second electrodes respectively; aligning the transfer device with the base substrate, such that a portion of each first electrode extending to the side edge of the light-emitting unit contacts a respective electro-curable adhesive; and separating the transfer device from the light-emitting units, such that each light-emitting unit is transferred to a respective area of the base substrate.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: May 3, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Chengtan Zhao
  • Publication number: 20210005582
    Abstract: The present disclosure relates to the field of display, specifically, to a mass transfer method for a light-emitting unit, an array substrate, and a display device. The method comprises: providing a plurality of light-emitting units in an array, wherein each light-emitting unit comprises a first electrode extending to a side edge of the light-emitting unit; providing a base substrate comprising a plurality of areas in an array, each area comprising a second electrode and an electro-curable adhesive thereon; picking up the light-emitting units by a transfer device; applying voltages to the first and second electrodes respectively; aligning the transfer device with the base substrate, such that a portion of each first electrode extending to the side edge of the light-emitting unit contacts a respective electro-curable adhesive; and separating the transfer device from the light-emitting units, such that each light-emitting unit is transferred to a respective area of the base substrate.
    Type: Application
    Filed: June 17, 2020
    Publication date: January 7, 2021
    Inventor: Chengtan ZHAO
  • Patent number: 9696591
    Abstract: The present invention provides a liquid crystal panel and a manufacturing method thereof, and a display apparatus comprising the liquid crystal panel, which relates to the field of display technology, and can avoid the problem that the sealant is separated from the first substrate and/or the second substrate while the liquid crystal panel is bent. The liquid crystal panel of the present invention comprises a first substrate and a second substrate, the first substrate and the second substrate are aligned with each other to form a liquid crystal cell, and the liquid crystal cell is sealed with sealant, wherein, at least one convex structure is provided in a region which corresponds to position of the sealant on the first substrate and/or the second substrate.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: July 4, 2017
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chengtan Zhao, Jaegeon You, Jikai Yao
  • Patent number: 9595093
    Abstract: A method for detecting an alignment film coated on a substrate of a liquid crystal panel comprises: obtaining an image of an alignment film test region of a substrate; and analyzing continuity of the alignment film along an internal boundary of the alignment film test region in the image obtained. since the alignment film test region is located outside an active display area of the substrate, when the alignment film along the internal boundary of the alignment film test region is determined as continuous, it can be determined that all the edges of the alignment film are outside the active display area, then a Haro region which might appear on the edge of the alignment film may also be located outside the active display area, so as to ensure uniform thickness of the alignment film in the active display area of the substrate.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: March 14, 2017
    Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Haiyun Lin, Qinghui Zhao, Chengtan Zhao
  • Patent number: 9513512
    Abstract: Embodiments of the present invention disclose a method for producing a masterboard alignment film, and a transfer printing plate and an alignment solution. The method comprises coating the alignment solution on a masterboard having two or more substrates using the transfer printing plate which has a transfer region simultaneously covering the two or more substrates, so that the alignment solution forms an alignment film on the masterboard; and removing the alignment film on the masterboard which is located in regions that are out of the display regions of the substrates and where there is no need to retain the alignment film. This method can solve the existing display defect issues that are caused by too thick peripheral regions of the alignment film, and the overlapping of the too thick peripheral regions of the alignment film with the sealant region.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: December 6, 2016
    Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Haiyun Lin, Chengtan Zhao, Hui Li, Jingpeng Li
  • Patent number: 9470931
    Abstract: A method for manufacturing the display panel and a transfer plate are disclosed, the method includes: fabricating a color resin layer and a first alignment film (21) in this order on a first mother board (2) corresponding to at least two display panels; applying the alignment liquid coated onto the surface of the transfer plate (1) onto the surface of the first mother board (2), so that the first alignment film (22) is formed on the first mother board (2); the transfer plate (1) comprises only one transfer zone correspondingly covering the entire first mother board (2).
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: October 18, 2016
    Assignees: BOE Technology Group Co., Ltd., Beijing BOE Optoelectronics Technology Co., Ltd.
    Inventors: Yong Shao, Weixin Meng, Chengtan Zhao, Xu Chen
  • Patent number: 9381682
    Abstract: A device and a method for adjusting post-spacer height in production of liquid crystal displays (LCDs), and the device comprises a controller (11) and an extrusion panel (12), the controller (1) is configured to control the extrusion panel (12) to perform plastic deformation treatment; and the extrusion panel (12) is configured to perform plastic deformation treatment on post spacers on a substrate, of which a height is more than a predetermined height value, under the control of the controller (11) after a rubbing process and before a cell assembly process, so that the standard deviation of the post-spacer height on the substrate can fall in a range of the predetermined standard deviation required to be achieved by products. The device and the method can effectively improve the uniformity of the post-spacer height on the substrates.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: July 5, 2016
    Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Chengtan Zhao, Tae Yup Min, Xu Chen, Hui Li, Weixin Meng, Lang Zhang
  • Publication number: 20160054611
    Abstract: The present invention discloses a display substrate, a method of manufacturing the same, and a display apparatus. The display substrate comprises a substrate body and a support spacer provided on the substrate body. In the display substrate, a contact surface between the support spacer and the substrate body is configured to be a non-flat surface. On one hand, the non-flat contact surface has a larger contact area than a flat contact surface and increases an adhesion force between the support spacer and the substrate body. Thereby, it can prevent the support spacer from being separated from the substrate body. On the other hand, the non-flat contact surface can hinder the movement of the support spacer relative to the substrate body in some directions. Thereby, it also can prevent the support spacer from being separated from the substrate body.
    Type: Application
    Filed: December 17, 2014
    Publication date: February 25, 2016
    Inventors: Chengtan Zhao, Jikai Yao, Guanbao Hui
  • Patent number: 9242266
    Abstract: An alignment film printing device, configured to improve coating quality of an alignment film, includes at least one printing unit, and the printing unit each includes: a cylinder body with an opening at a bottom and an extract opening on a top; a vacuum extractor connected with the extract opening; a plunger provided inside the cylinder body, and configured to draw the alignment fluid from the opening to the cylinder body; a vacuum tester provided at the extract opening and configured to monitor a vacuum degree inside the cylinder body and above the plunger; a range finder provided inside the cylinder body and configured to monitor a distance from the plunger to a top of the cylinder body; and a control device in signal communication with the vacuum extractor, the vacuum tester and the range finder respectively and configured to control a volume of the alignment fluid drawn into the cylinder body according to test values of the vacuum tester and the range finder.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: January 26, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yongshan Zhou, Chengtan Zhao, Jingpeng Li, Haiyun Lin
  • Publication number: 20160011451
    Abstract: A method for manufacturing the display panel and a transfer plate are disclosed, the method includes: fabricating a color resin layer and a first alignment film (22) in this order on a first mother board (2) corresponding to at least two display panels; applying the alignment liquid coated onto the surface of the transfer plate (1) onto the surface of the first mother board (2), so that the first alignment film (22) is formed on the first mother board (2); the transfer plate (1) comprises only one transfer zone correspondingly covering the entire first mother board (2).
    Type: Application
    Filed: June 26, 2014
    Publication date: January 14, 2016
    Applicants: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yong SHAO, Weixin MENG, Chengtan ZHAO, Xu CHEN
  • Publication number: 20150362767
    Abstract: The present invention provides a liquid crystal panel and a manufacturing method thereof, and a display apparatus comprising the liquid crystal panel, which relates to the field of display technology, and can avoid the problem that the sealant is separated from the first substrate and/or the second substrate while the liquid crystal panel is bent. The liquid crystal panel of the present invention comprises a first substrate and a second substrate, the first substrate and the second substrate are aligned with each other to form a liquid crystal cell, and the liquid crystal cell is sealed with sealant, wherein, at least one convex structure is provided in a region which corresponds to position of the sealant on the first substrate and/or the second substrate.
    Type: Application
    Filed: November 24, 2014
    Publication date: December 17, 2015
    Inventors: Chengtan ZHAO, Jaegeon YOU, Jikai YAO
  • Publication number: 20150331271
    Abstract: Disclosed is a post spacer and display substrate, a cross section of the post spacer in the direction perpendicular to the height direction comprising a first portion that is symmetrical with respect to an axis in a first direction, the maximal width of the first portion in a second direction perpendicular to the first direction being the maximal width of the whole cross section in the second direction, and the width of the first portion decreasing progressively along the first direction, wherein a shape between a vertex of the first portion in the first direction and each of the two endpoints defining said maximal width is a straight line, and an included angle between both straight lines is less than or equal to 90 degree, or a shape between a vertex of the first portion in the first direction and each of the two endpoints defining said maximal width is a convex arc, an included angle between both straight lines connecting respectively the vertex to each of the two endpoints is less than or equal to 90 degr
    Type: Application
    Filed: October 30, 2014
    Publication date: November 19, 2015
    Inventors: CHENGTAN ZHAO, JAEGEON YOU
  • Publication number: 20150217324
    Abstract: An alignment film printing device, configured to improve coating quality of an alignment film, includes at least one printing unit, and the printing unit each includes: a cylinder body with an opening at a bottom and an extract opening on a top; a vacuum extractor connected with the extract opening; a plunger provided inside the cylinder body, and configured to draw the alignment fluid from the opening to the cylinder body; a vacuum tester provided at the extract opening and configured to monitor a vacuum degree inside the cylinder body and above the plunger; a range finder provided inside the cylinder body and configured to monitor a distance from the plunger to a top of the cylinder body; and a control device in signal communication with the vacuum extractor, the vacuum tester and the range finder respectively and configured to control a volume of the alignment fluid drawn into the cylinder body according to test values of the vacuum tester and the range finder.
    Type: Application
    Filed: June 28, 2013
    Publication date: August 6, 2015
    Inventors: Yongshan Zhou, Chengtan Zhao, Jingpeng Li, Haiyun Lin
  • Patent number: 9097940
    Abstract: A liquid crystal display (LCD) panel, comprising a first substrate and a second substrate assembled face to face, each having a display area and a peripheral area around the display area, liquid crystal, and sealant formed between the peripheral area of the first substrate and the peripheral area of the second substrate. On the first substrate, at least one first obstructing frame is formed between the sealant and the display area of the first substrate; on the second substrate, at least one second obstructing frame is formed between the sealant and the display area of the second substrate; the first obstructing frame and the second obstructing frame are disposed at an interval and parallel to each other; each of the first obstructing frame and second obstructing frame has a thickness smaller than a cell gap, and a sum of the thicknesses of a pair of the first obstructing frame and second obstructing frame that are adjacent to each other is greater than the cell gap.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: August 4, 2015
    Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yong Chen, Chengtan Zhao, Jian Guo
  • Publication number: 20150108672
    Abstract: A device and a method for adjusting post-spacer height in production of liquid crystal displays (LCDs), and the device comprises a controller (11) and an extrusion panel (12), the controller (1) is configured to control the extrusion panel (12) to perform plastic deformation treatment; and the extrusion panel (12) is configured to perform plastic deformation treatment on post spacers on a substrate, of which a height is more than a predetermined height value, under the control of the controller (11) after a rubbing process and before a cell assembly process, so that the standard deviation of the post-spacer height on the substrate can fall in a range of the predetermined standard deviation required to be achieved by products. The device and the method can effectively improve the uniformity of the post-spacer height on the substrates.
    Type: Application
    Filed: December 18, 2012
    Publication date: April 23, 2015
    Inventors: Chengtan Zhao, Tae Yup Min, Xu Chen, Hui Li, Weixin Meng, Lang Zhang
  • Patent number: 9007557
    Abstract: Embodiments of the present invention relate to a liquid crystal panel and a fabricating method thereof and a display. The liquid crystal panel comprises: an array substrate and a color filter substrate bonded by a first sealant, with a region surrounded by the first sealant between the array substrate and the color filter substrate forming a liquid crystal panel display region filled with liquid crystal. In addition, the liquid crystal panel further comprises: a liquid crystal buffer region, located at the outer side of the first sealant; a liquid crystal channel, through which the liquid crystal buffer region and the liquid crystal panel display region are connected; and a covering layer, covering at least a position where the liquid crystal channel connects with the liquid crystal panel display region.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: April 14, 2015
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Chengtan Zhao, Tae Yup Min, Xu Chen, Haiyun Lin, Jingpeng Li
  • Publication number: 20140240648
    Abstract: Embodiments of the present invention relate to a liquid crystal panel and a fabricating method thereof and a display. The liquid crystal panel comprises: an array substrate and a color filter substrate bonded by a first sealant, with a region surrounded by the first sealant between the array substrate and the color filter substrate forming a liquid crystal panel display region filled with liquid crystal. In addition, the liquid crystal panel further comprises: a liquid crystal buffer region, located at the outer side of the first sealant; a liquid crystal channel, through which the liquid crystal buffer region and the liquid crystal panel display region are connected; and a covering layer, covering at least a position where the liquid crystal channel connects with the liquid crystal panel display region.
    Type: Application
    Filed: October 23, 2012
    Publication date: August 28, 2014
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Chengtan Zhao, Tae Yup Min, Xu Chen, Haiyun Lin, Jingpeng Li
  • Publication number: 20140212019
    Abstract: The embodiments of the present disclosure provide a method for detecting alignment film and device for the same. The method comprises: obtaining an image of an alignment film test region of a substrate; and analyzing continuity of the alignment film along an internal boundary of the alignment film test region in the image obtained. since the alignment film test region is located outside an active display area of the substrate, when the alignment film along the internal boundary of the alignment film test region is determined as continuous, it can be determined that all the edges of the alignment film are outside the active display area, then a Haro region which might appear on the edge of the alignment film may also be located outside the active display area, so as to ensure uniform thickness of the alignment film in the active display area of the substrate.
    Type: Application
    Filed: December 18, 2013
    Publication date: July 31, 2014
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Haiyun LIN, Qinghui ZHAO, Chengtan ZHAO