公开(公告)号：US20210011314A1

公开(公告)日：2021-01-14

申请号：US16955514

申请日：2019-11-06

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiandong MENG ,  Wei WANG ,  Xianqin MENG ,  Jifeng TAN ,  Fangzhou WANG ,  Qiuyu LING ,  Xiaochuan CHEN

IPC: G02F1/137 ,  G02F1/1335 ,  G02F1/1337 ,  G01N21/31 ,  G01N21/85

Abstract: A light modulation device and a single-channel spectrum detection system are provided. The light modulation device includes: a light guide plate; a dispersing component configured to disperse received light into light of different wavelengths and to diffract the light of different wavelengths into the light guide plate at different angles; and a dynamic filtering component configured to prevent light of a selected wavelength in the light guide plate from entering the dynamic filtering component such that the light of the selected wavelength emits out from the light guide plate, and to make light of non-selected wavelengths in the light guide plate enter the dynamic filtering component such that the light of the non-selected wavelengths is filtered out from the light guide plate.

公开(公告)号：US20200379157A1

公开(公告)日：2020-12-03

申请号：US16771212

申请日：2019-10-21

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xiandong MENG ,  Wei WANG ,  Xianqin MENG ,  Qiuyu LING ,  Jifeng TAN ,  Xiaochuan CHEN

IPC: F21V8/00 ,  G02F1/133 ,  G09G3/36

Abstract: Disclosed includes a backlight assembly, a display device including such a backlight assembly and a method of obtaining backlight. The backlight assembly may comprise a light guide, a first grating on a first surface of the light guide and a light direction adjuster on a side of the first grating away from the light guide. The first grating may have a diffraction direction slanted relative to a thickness direction of the light guide and the light direction adjuster may be configured to change diffractive light coming from the first grating to a target direction.

公开(公告)号：US20200371279A1

公开(公告)日：2020-11-26

申请号：US16619126

申请日：2019-06-14

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xiandong MENG ,  Jifeng TAN ,  Xiaochuan CHEN ,  Wei WANG ,  Xianqin MENG

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

Abstract: A display panel and a display device. The display panel includes a light guide plate including a light incident surface and a light emergent surface; the light incident surface is one end surface of the light guide plate; an opposite substrate opposite to the light guide plate; a liquid crystal layer between light guide plate and opposite substrate; a light source located on the light incident surface of light guide plate; a light shielding layer at the side, facing liquid crystal layer, of the opposite substrate; the light shielding layer including light shielding regions, light transmitting regions; light converging elements located on light emergent surface of light guide plate, the light converging elements corresponding to one light shielding region; a transparent conductive structure between light guide plate and opposite substrate and configured to make liquid crystal layer be equivalent to a diffraction grating structure under control of electric signals.

公开(公告)号：US20200340859A1

公开(公告)日：2020-10-29

申请号：US16643015

申请日：2019-08-14

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

IPC: G01J3/18 ,  G01N21/31 ,  G01N21/85 ,  G01N21/25

Abstract: A spectrometer and a spectral detection and analysis method implemented by the spectrometer. The spectrometer includes an optical device and a detection device. The optical device includes at least one light filter, each of which including at least two light filtering units, so that the optical device can emit at least two kinds of monochromatic light. The detection device includes at least one detector, each of which comprising at least two detection units facing at least two light filtering units in the corresponding light filter in a one-to-one relationship. The monochromatic light emitted from the light filtering unit is emitted along the direction perpendicular to the direction of the light emitting surface.

公开(公告)号：US20200326465A1

公开(公告)日：2020-10-15

申请号：US16097503

申请日：2018-02-01

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

IPC: F21V8/00

Abstract: A backlight module, a manufacturing method thereof, a display device and a light guide device are provided. The backlight module includes: a light guide structure, including a volume grating layer, the volume grating layer including a plurality of volume grating portions and a light guide portion between adjacent volume grating portions, the plurality of volume grating portions being configured to introduce a beam of a specific wavelength into the light guide portion; and a light extraction structure, located on a light exit side of the light guide structure, wherein a refractive index of the light guide structure is greater than a refractive index of the light extraction structure, and an incident angle of the beam introduced into the light guide portion on a plane where the light guide portion is located is not less than a total reflection critical angle of the light guide structure.

公开(公告)号：US20200285104A1

公开(公告)日：2020-09-10

申请号：US16640952

申请日：2019-09-25

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiandong MENG ,  Jifeng TAN ,  Wei WANG ,  Xianqin MENG ,  Fangzhou WANG ,  Qiuyu LING ,  Xiaochuan CHEN

IPC: G02F1/1335 ,  F21V8/00

Abstract: The present disclosure provides an optical substrate and a display device. The optical substrate includes: a light guide plate which includes a light entering surface and a light extraction surface adjacent to the light entering surface, and is configured to enable light entering the light guide plate through the light entering surface to be totally reflected toward an opposite surface of the light guide plate opposite to the light entering surface; and a plurality of light extraction structures which is arranged on the light extraction surface of the light guide plate for extracting the totally-reflected light in the light guide plate, and has areas of orthogonal projections of the plurality of light extraction structures on the light extraction surface of the light guide plate gradually increasing along a direction from the light entering surface to the opposite surface.

公开(公告)号：US20200166680A1

公开(公告)日：2020-05-28

申请号：US16329456

申请日：2018-06-11

Applicant: BOE Technology Group Co., Ltd.

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

IPC: G02B5/18 ,  G02F1/13357

Abstract: A surface light source, comprising a waveguide layer and a grating structure; the waveguide layer has a first surface and a second surface opposite to each other; the grating structure is provided on the first or second surface of the waveguide layer; and the grating structure is used for guiding light incident to the grating structure to the waveguide layer and performing total reflection propagation in the waveguide layer. Such surface light source structure enables energy and direction of light emitted from a light field modulation layer to be distributed uniformly, and thus the thickness of the surface light source and the number of LEDs in the surface light source are reduced. Also disclosed is a display device.

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：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.