Patents by Inventor Yafeng Yang

Yafeng Yang 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: 20190086699
    Abstract: A display device and a display method thereof are provided. The display device includes: a first base substrate and a second base substrate which are arranged oppositely and a liquid crystal layer between the first base substrate and the second base substrate, the display device further includes: a waveguide grating between the liquid crystal layer and the first base substrate, the waveguide grating including a waveguide layer and a grating layer on one side of the waveguide layer facing the liquid crystal layer, and the grating layer being in contact with the liquid crystal layer; and a collimation light source on a lateral surface of the waveguide layer, light emitted by the collimation light source being coupled into the waveguide layer and output from the grating layer.
    Type: Application
    Filed: July 21, 2017
    Publication date: March 21, 2019
    Inventors: WEI WANG, Yafeng YANG, Xiaochuan CHEN, Wenqing ZHAO, Zhongxiao LI, Jifeng TAN, Xianqin MENG
  • Publication number: 20190086713
    Abstract: The display module includes a first substrate, a second substrate, a first electrode, a liquid crystal layer, a second electrode, and a plurality of gratings and drive electrodes, wherein the liquid crystal layer includes only positive liquid crystal molecules; both a refractive index of the first electrode and a refractive index of the first substrate are greater than a normal refractive index no of liquid crystal in the liquid crystal layer; and a refractive index of each of the plurality of gratings lies between the normal refractive index no and an abnormal refractive index ne of the liquid crystal.
    Type: Application
    Filed: July 5, 2018
    Publication date: March 21, 2019
    Inventors: Yafeng Yang, Wei Wang, Xiaochuan Chen, Xue Dong, Jifeng Tan, Xianqin Meng, Xiandong Meng
  • Publication number: 20190073950
    Abstract: Embodiments of the present disclosure provide a pixel circuit, a driving method thereof and a display apparatus. The pixel circuit comprises a resetting sub-circuit configured to control potentials of the first node, the second node and the third node according to inputting signals of the first signal terminal and the second signal terminal; a charging sub-circuit configured to control a potential of the second node according to an inputting signal of the second signal terminal; a compensating unit sub-circuit configured to control the potentials of the first node and the third node according to an inputting signal of the third signal terminal and the potential of the second node; a reading sub-circuit is configured to control outputting signals of the first terminal of the light emitting device and the reading terminal according to the inputting signal of the fourth signal terminal.
    Type: Application
    Filed: August 16, 2017
    Publication date: March 7, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shengji Yang, Xue Dong, Jing Lv, Xiaochuan Chen, Yafeng Yang, Wenqing Zhao, Can Zhang
  • Publication number: 20190056548
    Abstract: This disclosure provides a light source assembly and a display device, and the light source assembly includes: a first substrate and a second substrate arranged opposite to each other; a waveguide layer arranged between the first substrate and the second substrate; and a side-incident collimated light source arranged on a side of the waveguide layer, wherein the refractive index of the waveguide layer is higher than the refractive index of the first substrate, and the refractive index of the second substrate respectively; and light of the side-incident collimated light source is incident onto the side of the waveguide layer at a preset angle, and the incident light is totally reflected at the interference between the first substrate and the waveguide layer.
    Type: Application
    Filed: September 13, 2017
    Publication date: February 21, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xianqin Meng, Xue Dong, Wei Wang, Xiaochuan Chen, Yafeng Yang, Jifeng Tan, Xiandong Meng, Jian Gao, Pengxia Liang, Ming Zhu
  • Publication number: 20190048439
    Abstract: A sintered Ti alloy comprising: 4 to 6 wt. % iron; 1 to 4 wt. % aluminium or 1 to 3 wt. % copper; >0 to 0.5 wt. % silicon; >0 to 0.3 wt. % boron; >0 to 1 wt. % lanthanum, and the balance being titanium with incidental impurities. In the associated powder metallurgy formation process, the boron and lanthanum content is preferably introduced into a blended powder mixture in the form of lanthanum boride (LaB6).
    Type: Application
    Filed: September 16, 2015
    Publication date: February 14, 2019
    Applicant: Baoshan Iron & Steel Co., Ltd.
    Inventors: Yafeng YANG, Ma QIAN, Shudong LUO, Jifeng SUN, Aijun HUANG
  • Patent number: 10197880
    Abstract: A liquid crystal lens, a display device and a driving method of the display device are disclosed. The liquid crystal lens includes a first substrate, a second substrate, and a driving electrode layer and blue phase liquid crystals disposed between the first substrate and the second substrate; the driving electrode layer includes driving electrodes, each driving electrode includes at least two electrode pairs, the electrode pair includes two sub-electrodes which are disposed opposite to each other and can be applied with a voltage separately, and all the sub-electrodes in the same driving electrode are insulated from each other; the sub-electrodes of different electrode pairs in the same driving electrode are unparallel to each other; and the blue phase liquid crystals at different positions have deformations of different degrees in electrical fields with different intensities generated by the different sub-electrodes.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: February 5, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qian Wang, Xiaochuan Chen, Wenqing Zhao, Yafeng Yang, Jian Gao, Wei Wang, Jifeng Tan, Xiaochen Niu, Haiyan Wang
  • Patent number: 10197850
    Abstract: A virtual curved surface display panel and a display device are provided. By using the light splitting principle of the grating structure, the imaging heights of the grating structures are designed to be symmetrically distributed with respect to a vertical symmetry axis of a display surface of the flat display panel. In the grating structures on the same side of the symmetry axis, the imaging heights of the respective grating structures having the same distance from the vertical symmetry axis are the same, and the imaging heights of the respective grating structures having different distances from the vertical symmetry axis are different from each other. By setting the imaging heights of the grating structures, the image distances of the pixels in the flat display panel are different so that the images of the plurality of pixels constitute a curved surface.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: February 5, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jifeng Tan, Wei Wang, Yafeng Yang, Jian Gao, Xiaochuan Chen, Can Zhang, Can Wang, Qian Wang, Xinli Ma
  • Publication number: 20190033507
    Abstract: The disclosure provides a display device including an upper substrate (001) and a lower substrate (002) arranged opposite to each other, a liquid crystal layer (003), a wave guiding layer (004), electrode structures (005), and a collimated light source (006). The liquid crystal layer (003) is arranged between the upper substrate (001) and the lower substrate (002); the wave guiding layer (004) is arranged on a side of the lower substrate (002) facing the upper substrate (001), and a refractive index of the wave guiding layer (004) is at least greater than a refractive index of a film layer in contact with the wave guiding layer (004); the plurality of electrode structures (005) are arranged on a side of the upper substrate (001) facing the lower substrate (002), and the plurality of electrode structures (005) are arrayed in correspondence to sub-pixels in a one-to-one manner; and the collimated light source (006) is at least arranged on one side of the wave guiding layer (004).
    Type: Application
    Filed: August 17, 2017
    Publication date: January 31, 2019
    Inventors: Wei Wang, Yafeng Yang, Xiaochuan Chen, Xianqin Meng
  • Publication number: 20190025644
    Abstract: A display panel and a display device are disclosed. The display panel includes a first substrate, a liquid crystal layer, a waveguide layer, a grating layer, a first electrode and a second electrode. The liquid crystal layer, the first electrode and the second electrode are located between the waveguide layer and the first substrate. The first electrode and the second electrode are configured to adjust a refractive index of the liquid crystal layer by changing voltages applied thereto, wherein an amount of light coupled out of the waveguide layer is determined based on a difference between the refractive index of the liquid crystal layer and a refractive index of the waveguide layer.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 24, 2019
    Inventors: Jifeng TAN, Wei WANG, Yafeng YANG, Dacheng ZHANG
  • Publication number: 20190011735
    Abstract: A display panel and a display device are disclosed. The display panel comprises a first substrate, a second substrate, a gating layer, and a waveguide layer, a first electrode and a second electrode between the first and the second substrates, the gating layer includes a polymer layer and multiple liquid crystal gratings arranged with an interval, the polymer layer covering the liquid crystal gratings and being in gaps between the liquid crystal gratings. The first and second electrodes are configured to adjust a refractive index of the liquid crystal gratings by changing voltages applied thereto, a coupling efficiency at which light is coupled out of the waveguide layer is determined according to difference between the refractive indices of the liquid crystal gratings and the polymer layer, and the grating layer controls exiting angle and diffraction efficiency of light of a specific color in each pixel unit.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 10, 2019
    Inventors: Jifeng TAN, Wei WANG, Yafeng YANG, Xiaochuan CHEN, Pengxia LIANG, Dacheng ZHANG
  • Publication number: 20190004365
    Abstract: A display panel and a display device are disclosed and belong to the field of display technology. The display panel comprises a first substrate and a second substrate opposite to each other, a liquid crystal layer, a first electrode, and a second electrode between the first substrate and the second substrate, a waveguide layer between the first substrate and the liquid crystal layer, and a plurality of grating units which are combined with the liquid crystal layer and disposed in a same layer as the liquid crystal layer; wherein the first electrode and the second electrode are configured to adjust a refractive index of the liquid crystal layer by changing voltages applied thereto; and a coupling efficiency at which light is coupled out of the waveguide layer is determined according to a difference between a refractive index of the grating units and the refractive index of the liquid crystal layer.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 3, 2019
    Inventors: Jifeng TAN, Wei WANG, Yafeng YANG, Xiaochuan CHEN, Jian GAO, Xinli MA, Can WANG, Can ZHANG, Xiandong MENG, Xianqin MENG, Dacheng ZHANG
  • Publication number: 20190004324
    Abstract: A three-dimensional display device includes: a plurality of sub pixels and a plurality of grating structures in a one-to-one correspondence with the plurality of sub pixels; each grating structure is configured to enable light to emerge according to an assigned direction, so that emergent light of the three-dimensional display device is converged into at least two viewpoints at a left eye of an observer and converged into at least two viewpoints at a right eye of the observer.
    Type: Application
    Filed: August 2, 2017
    Publication date: January 3, 2019
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Wei WANG, Yafeng YANG, Xiaochuan CHEN, Jian GAO
  • Publication number: 20180374258
    Abstract: An image generating method, includes: establishing a 3D scene model that includes a virtual 3D object, a virtual display screen and at least one sight point set; determining a plurality of intersection points between a plurality of virtual light paths from each sight point to a plurality of virtual object points on the surface of the virtual three dimensional object and the virtual display screen, all virtual light paths {lk1, lk2, . . . , lkS} corresponding to the virtual object point Tk intersect at the virtual object point Tk; wherein, 1?k?n, 1?i?S, S is the total number of established sight points, and the plurality of virtual object points are all located within the viewing angle range of the virtual display screen; forming S frames of rendered images, including: determining color parameters of a plurality of intersection points on the virtual display screen to obtain the ith rendered image.
    Type: Application
    Filed: July 14, 2017
    Publication date: December 27, 2018
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wei WANG, Yafeng YANG, Xiaochuan CHEN
  • Publication number: 20180372924
    Abstract: Embodiments of the disclosure provide a virtual curved surface display panel, a display device and a displaying method. The virtual curved surface display panel includes: a display panel having a plurality of pixels; and a plurality of imaging lens arrays disposed at a light emitting side of the display panel and arranged to image light from the plurality of pixels such that imaging trajectories for the plurality of pixels are located in a same virtual curved surface, thereby enabling a virtual curved surface display effect on a flat display panel.
    Type: Application
    Filed: July 20, 2017
    Publication date: December 27, 2018
    Inventors: Jian GAO, Xiaochuan Chen, Yafeng Yang
  • Publication number: 20180364505
    Abstract: A display panel and a display device are disclosed and belong to the field of display technology. The display panel comprises a first substrate and a second substrate opposite to each other, and a liquid crystal layer, a first electrode, as second electrode, a waveguide layer and a grating layer between the first and second substrates; wherein the waveguide layer is on a side of the liquid crystal layer proximal to the first substrate; and the grating layer is in contact with the liquid crystal layer; the first electrode and the second electrode are configured to adjust a refractive index of the liquid crystal layer by changing voltages applied thereto; and a coupling efficiency at which light is coupled out of the waveguide layer is determined according to a difference between a refractive index of the grating layer and the refractive index of the liquid crystal layer.
    Type: Application
    Filed: July 31, 2017
    Publication date: December 20, 2018
    Inventors: Jifeng TAN, Wei WANG, Yafeng YANG, Xiaochuan CHEN, Jian GAO, Can WANG, Can ZHANG, Xinli MA, Xiandong MENG, Xianqin MENG, Dacheng ZHANG
  • Publication number: 20180356567
    Abstract: A near eye display device and method are provided. The near eye display device including: a display panel and a lens module. The display panel includes a plurality of display areas arranged in an array, each of the display areas includes at least one pixel unit; and the lens module includes a plurality of micro-lenses arranged in an array, which include a plurality of deflection micro-lenses, an end of the deflection micro-lenses close to a center of the lens module is closer to the display panel than an end of the deflection micro-lenses far away from the center of the lens module, each of the display areas corresponds to at least one of the micro-lenses, and an adjacent portion of two adjacent display areas of the display areas corresponds to two different micro-lenses of the micro-lenses and the two different micro-lenses include at least one of the deflection micro-lenses.
    Type: Application
    Filed: March 29, 2017
    Publication date: December 13, 2018
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Can WANG, Yafeng YANG, Jian GAO, Can ZHANG, Xinli MA, Wei WANG, Jifeng TAN, Xiaochuan CHEN
  • Publication number: 20180357961
    Abstract: A pixel circuit, a display panel, a display device and a driving method are disclosed. The pixel circuit includes: a light-emitting circuit including a plurality of light-emitting sub-circuits (111); and a compensation driving circuit including an output terminal and a driving transistor. The plurality of light-emitting sub-circuits are all electrically connected to the output terminal; and the compensation driving circuit is configured to receive a light-emitting data signal, compensate for a threshold voltage of the driving transistor, and drive any one of the plurality of light-emitting sub-circuits to emit light according to an output signal output by the output terminal.
    Type: Application
    Filed: March 24, 2017
    Publication date: December 13, 2018
    Inventors: Shengji Yang, Xue Dong, Jing Lv, Xiaochuan Chen, Wenqing Zhao, Yafeng Yang, Lei Wang, Dongni Liu, Li Xiao, Pengcheng Lu, Han Yue, Jie Fu
  • Patent number: 10126589
    Abstract: A virtual curved surface display panel, a method of manufacturing the same, and a display device are provided. A set of vertical lenticular lens and horizontal lenticular lens fitted tightly and orthogonally is arranged on a light exit surface of a pixel in the flat display panel, which forms an equivalent spherical lens. The focal lengths of the equivalent spherical lenses are symmetrically distributed with a central pixel as a symmetry axis, and focal lengths of the equivalent spherical lenses in the columns located on the same side of the symmetry axis are not equal to each other. Therefore, the equivalent spherical lenses enable the images of the pixels to form a curved surface, thereby realizing virtual curved surface display.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: November 13, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Can Zhang, Yafeng Yang, Jian Gao, Can Wang, Xinli Ma, Wei Wang, Jifeng Tan
  • Patent number: 10103207
    Abstract: The present disclosure relates to a display device in the field of display.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: October 16, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wei Wang, Yafeng Yang, Xiaochuan Chen, Jing Lv, Jifeng Tan, Can Zhang
  • Publication number: 20180284472
    Abstract: A light collimating structure, and a manufacturing method thereof, a light collimating substrate, a backlight module and the display device are disclosed. The light collimating structure includes: a lens having a first main axis and a first focal point; and a curved mirror having a second main axis and a second focal point; wherein the curved mirror is provided around the lens, the first main axis and the second main axis are coincident, and the first focal point and the second focal point are coincident, such that light emitted at the first focal point or the second focal point is collimated into parallel light parallel to the first main axis and the second main axis after transmitted through the lens or reflected by the curved mirror. The light collimating structure can collimate light, thereby improving the utilization of light energy, and reducing the power consumption of the display panel.
    Type: Application
    Filed: April 1, 2017
    Publication date: October 4, 2018
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Jifeng TAN, Wei WANG, Jian GAO, Yafeng YANG, Xiaochuan CHEN