公开(公告)号：US20200018885A1

公开(公告)日：2020-01-16

申请号：US16338307

申请日：2018-07-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wei WANG ,  Xiandong MENG ,  Jifeng TAN ,  Jian GAO ,  Xiaochuan CHEN ,  Jing LV ,  Xue DONG

IPC: F21V8/00

Abstract: A backlight unit, a method for manufacturing the same and a display device are provided. The backlight unit includes a light guide plate, an LED layer and an optical microstructure layer. The light guide plate includes a light incident surface and a light exit surface opposite to the light incident surface. The LED layer is provided on the light incident surface of the light guide plate, and includes plural LED chips arranged in an array. The optical microstructure layer is provided on one of the light incident surface and the light exit surface of the light guide plate, and includes plural optical microstructures in one-to-one correspondence with the plural LED chips. Each of the plural optical microstructures is configured to cause at least a portion of light emitted from a corresponding LED chip to propagate in the light guide plate by total internal reflection.

公开(公告)号：US20190310456A1

公开(公告)日：2019-10-10

申请号：US16067980

申请日：2017-12-01

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xianqin MENG ,  Wei WANG ,  Xue DONG ,  Yafeng YANG ,  Xiaochuan CHEN ,  Jifeng TAN ,  Xiandong MENG ,  Jian GAO

IPC: G02B26/00 ,  G02B5/18

Abstract: A display panel includes a light waveguide layer and a first substrate disposed opposite to each other, and further including an electrowetting control layer disposed between the light waveguide layer and the first substrate, the electrowetting control layer including a first electrode layer, a second electrode layer, and a grating layer and an electrowetting layer which are disposed between the first electrode and the second electrode layer, the grating layer and the electrowetting layer are configured to operatively couple light with a set transmittance, a setting direction, and a set wavelength out of the light waveguide layer.

公开(公告)号：US20190265543A1

公开(公告)日：2019-08-29

申请号：US16080149

申请日：2018-02-12

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jifeng TAN ,  Xianqin MENG ,  Yafeng YANG ,  Xiandong MENG ,  Wei WANG ,  Jian GAO

IPC: G02F1/1335 ,  G02B5/26 ,  G02B5/20

Abstract: A filter structure, a display substrate, a display panel and a display device are provided. The filter structure includes a first refractive index match layer, a waveguide layer, a second refractive index match layer and a grating layer, that are stacked, the waveguide layer is located between the first refractive index match layer and the second refractive index match layer, the second refractive index match layer is located between the waveguide layer 112) and the grating layer, and refractive index of the first refractive index match layer and refractive index of the second refractive index match layer both are smaller than refractive index of the waveguide layer.

公开(公告)号：US20190155096A1

公开(公告)日：2019-05-23

申请号：US16028147

申请日：2018-07-05

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jian GAO ,  Xiaochuan CHEN ,  Yafeng YANG ,  Jifeng TAN

IPC: G02F1/1335 ,  G02F1/1343 ,  G02F1/1337 ,  G02F1/1347 ,  G02F1/29 ,  G02B5/18 ,  G02B5/30

Abstract: A liquid crystal cell and a photographic system are described. The liquid crystal cell includes: a refractive index switching layer including a liquid crystal layer consisting of liquid crystals and a substrate on which a plurality of diffractive lenses are formed; a first transparent electrode layer; and a second transparent electrode layer. The liquid crystal layer has a first refractive index and a second refractive index when the first transparent electrode layer and the second transparent electrode layer are powered on and off, respectively. The first refractive index is greater than the second refractive index, and the first refractive index is the same as the refractive index of the diffractive lenses. By means of this solution, free and controllable switching between light field imaging and conventional photographic imaging can be realized in the same system.

公开(公告)号：US20190094650A1

公开(公告)日：2019-03-28

申请号：US15993888

申请日：2018-05-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jian GAO ,  Xiaochuan CHEN ,  Wei WANG ,  Jifeng TAN ,  Xiandong MENG

IPC: G02F1/29 ,  G02F1/137 ,  G02F1/1335 ,  G02F1/1343

Abstract: A first diffraction unit includes a first diffraction unit which includes a first substrate provided with a first polarizer on one side thereof and a first electrode on the other side thereof; a first diffraction lens provided on the first electrode; a second substrate provided opposite to the first substrate, a second electrode is provided on a side of the second substrate facing to the first substrate; and a first liquid crystal layer provided between the second electrode and the first diffraction lens, and having liquid crystal therein configured to be in a state in which the liquid crystal has a long axis direction parallel to an axial direction of an transmission axis of the first polarizer, or in a state in which the liquid crystal has a long axis direction perpendicular to an axial direction of an transmission axis of the first polarizer.

公开(公告)号：US20190004365A1

公开(公告)日：2019-01-03

申请号：US15750035

申请日：2017-07-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jifeng TAN ,  Wei WANG ,  Yafeng YANG ,  Xiaochuan CHEN ,  Jian GAO ,  Xinli MA ,  Can WANG ,  Can ZHANG ,  Xiandong MENG ,  Xianqin MENG ,  Dacheng ZHANG

IPC: G02F1/1335 ,  G02F1/1343 ,  F21V8/00

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.

公开(公告)号：US20190004324A1

公开(公告)日：2019-01-03

申请号：US15744339

申请日：2017-08-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wei WANG ,  Yafeng YANG ,  Xiaochuan CHEN ,  Jian GAO

IPC: G02B27/22 ,  G02B27/30 ,  G02F1/1335 ,  G02B6/122 ,  H04N13/349

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.

公开(公告)号：US20180239194A1

公开(公告)日：2018-08-23

申请号：US15572762

申请日：2017-05-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jifeng TAN ,  Wei WANG ,  Yafeng YANG ,  Jian GAO ,  Xiaochuan CHEN ,  Can ZHANG ,  Can WANG ,  Qian WANG ,  Xinli MA

IPC: G02F1/1335 ,  G02F1/29 ,  G02B27/00 ,  G09F9/35

CPC classification number: G02F1/133606 ,  G02B27/00 ,  G02F1/1335 ,  G02F1/29 ,  G02F2001/133607 ,  G09F9/30 ,  G09F9/35

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.

公开(公告)号：US20180231867A1

公开(公告)日：2018-08-16

申请号：US15742896

申请日：2017-07-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jian GAO ,  Xue DONG ,  Xiaochuan CHEN ,  Yafeng YANG ,  Wei WANG ,  Jifeng TAN ,  Xiandong MENG

IPC: G02F1/29

Abstract: Disclosed is a lens device, including: a first transparent substrate; a second transparent substrate; and a liquid crystal layer filled therebetween. The first transparent substrate is a Fresnel lens, and a surface of the Fresnel lens toward the liquid crystal layer is disposed with grooves which are spaced from one another in accordance with Fresnel wave zones. The second transparent substrate is configured to control state of a liquid crystal, such that a refractive index of the liquid crystal, when polarized light incident into the liquid crystal passes through the liquid crystal, transforms between a first refractive index of the liquid crystal and a second refractive index of the liquid crystal, wherein the first refractive index is greater than the second refractive index, and a refractive index of the Fresnel lens is substantially equal to the first refractive index of the liquid crystal in the liquid crystal layer.

公开(公告)号：US20180231812A1

公开(公告)日：2018-08-16

申请号：US15571924

申请日：2017-05-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jifeng TAN ,  Jian GAO ,  Yafeng YANG ,  Xiaochuan CHEN ,  Wei WANG ,  Can WANG ,  Can ZHANG ,  Qian WANG

IPC: G02F1/1335 ,  G09F9/35 ,  G02B27/09

CPC classification number: G02F1/1335 ,  G02B27/0983 ,  G02F1/133526 ,  G09F9/35

Abstract: A virtual curved surface display panel and a display device are provided. By using the imaging principle of the concave lens, the concave lens array is provided on the display surface of the flat display panel, and the focal lengths of the concave lenses are designed to be symmetrically distributed with respect to a vertical symmetry axis of the display surface. In the concave lenses on the same side of the symmetry axis, the focal lengths of the respective concave lenses having the same distance from the vertical symmetry axis are the same, and the focal lengths of the respective concave lenses having different distances from the vertical symmetry axis are different from each other. By setting the focal lengths of the concave lenses, 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.