公开(公告)号：US11307460B2

公开(公告)日：2022-04-19

申请号：US16959204

申请日：2019-12-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiandong Meng ,  Wei Wang ,  Jifeng Tan ,  Xianqin Meng ,  Xiaochuan Chen

IPC: G02F1/13357 ,  G02F1/1335

Abstract: A backlight module and a display device are provided in embodiments of the present disclosure. The backlight module includes: a light source assembly configured to emit light beams of different colors, the light beams of different colors comprising a light beam of a first color and a light beam of a second color; a light guiding plate comprising: a plurality of light incident portions configured to receive the light beams of different colors, and a light emergent surface, wherein, a plurality of pixel backlight regions are provided on the light emergent surface, each pixel backlight region includes a plurality of light extraction devices, and the plurality of light extraction devices include at least one first light extraction device configured to guide the light beam of the first color of the light beams of different colors from the plurality of light incident portions to exit from the light emergent surface, and at least one second light extraction device configured to guide the light beam of the second color of the light beams of different colors from the plurality of light incident portions to exit from the light emergent surface.

公开(公告)号：US11262618B1

公开(公告)日：2022-03-01

申请号：US17212832

申请日：2021-03-25

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xianqin Meng ,  Weiting Peng ,  Yishan Tian ,  Qiuyu Ling ,  Yujiao Guo ,  Wei Wang ,  Fei Wang ,  Xiaochuan Chen

IPC: G02F1/00 ,  G02F1/13357 ,  G02F1/1335

Abstract: The present disclosure relates to an LED backlight structure having a backlight side and a light outgoing side opposite to each other, including: an LED array on a transparent substrate; a transparent encapsulation layer on a side of the transparent substrate with the LED array, and configured to encapsulate the LED array; wherein the LED array is configured to emit light, the LED backlight structure further includes: a reflection layer on a backlight side of the transparent substrate and configured to reflect light to the light outgoing side; and a first microstructure layer on the light outgoing side of the transparent substrate and the LED array, wherein the first microstructure layer is configured to scatter light incident on a surface of the first microstructure layer, so that a part of light passes through the first microstructure layer, and the rest of light is reflected by the first microstructure layer.

公开(公告)号：US11262492B2

公开(公告)日：2022-03-01

申请号：US16322599

申请日：2018-05-28

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xiandong Meng ,  Wei Wang ,  Xiaochuan Chen ,  Jifeng Tan ,  Xianqin Meng ,  Jian Gao

IPC: F21V8/00 ,  G02B5/00

Abstract: A backlight module and display device are provided. The backlight module includes: a light source module including a transparent block, a light source and a first grating group, and a light emergent module including a light guide plate and a second grating group. The light source emits initial lights to the first grating group which diffracts initial into first diffracted lights, and transmits first diffracted lights in light guide plate to second grating group; the second grating group diffracts the first diffracted lights into second diffracted lights, and enables the second diffracted lights to be emergent from backlight module. When an included angle between initial lights and side surface of light guide plate is greater than 0°, an angle between second diffracted lights and side surface is smaller than an angle between initial lights and side surface, thereby improving collimation degree of lights emergent from backlight module.

公开(公告)号：US11256012B2

公开(公告)日：2022-02-22

申请号：US16483910

申请日：2019-02-27

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xianqin Meng ,  Wei Wang ,  Jifeng Tan ,  Xiandong Meng ,  Xiaochuan Chen ,  Jian Gao ,  Fangzhou Wang ,  Qiuyu Ling

IPC: G02B5/18 ,  G01J3/28 ,  G01J3/18

Abstract: The present disclosure relates to a dispersion apparatus. The dispersion apparatus may include an optical substrate; a grating layer on a first side of the optical substrate; and a light outlet layer on a second side of the optical substrate, the second side opposite the first side of the optical substrate. The grating layer is configured to perform dispersion of incident light into first-order diffracted beams having target wavelengths and transmit the first-order diffracted beams into the optical substrate, and wherein a diffraction angle of each of the first-order diffracted beams having the target wavelengths is smaller than a total reflection angle between the optical substrate and air. The light outlet layer is configured to extract the first-order diffracted beams having the target wavelengths in the optical substrate.

公开(公告)号：US11221517B2

公开(公告)日：2022-01-11

申请号：US16336982

申请日：2018-03-07

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xiandong Meng ,  Wei Wang ,  Xiaochuan Chen ,  Jifeng Tan ,  Xianqin Meng ,  Jian Gao ,  Fangzhou Wang

IPC: G02F1/13357 ,  G02F1/1335

Abstract: The present application discloses a liquid crystal display apparatus and a fabricating method thereof, a back light and a fabricating method thereof. The liquid crystal display apparatus includes a base substrate; a liquid crystal layer; and an anisotropic grating on a side of the liquid crystal layer distal to the base substrate. The anisotropic grating includes a plurality of barriers and a plurality of slits arranged alternately. The anisotropic grating is configured to separate incident light into light of a first color, light of a second color, and light of a third color, and configured to emit the light of the first color, the light of the second color, and the light of the third color at different exit angles, respectively.

公开(公告)号：US11213822B2

公开(公告)日：2022-01-04

申请号：US16457098

申请日：2019-06-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Fangzhou Wang ,  Xianqin Meng ,  Wei Wang ,  Jifeng Tan ,  Jian Gao ,  Xiandong Meng ,  Pengxia Liang ,  Qiuyu Ling ,  Xiaochuan Chen

IPC: B01L3/00 ,  G01N21/59

Abstract: The present disclosure provides a light source assembly including a light source and a bull's eye collimation structure disposed on a light exiting side of the light source and configured to collimate light beam emitted by the light source. The bull's eye collimation structure includes a metal layer including a sub-wavelength aperture and a plurality of annular recesses surrounding the sub-wavelength aperture, the plurality of annular recesses being arranged along a radial direction of the sub-wavelength aperture.

公开(公告)号：US20210364688A1

公开(公告)日：2021-11-25

申请号：US16322599

申请日：2018-05-28

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xiandong Meng ,  Wei Wang ,  Xiaochuan Chen ,  Jifeng Tan ,  Xianqin Meng ,  Jian Gao

IPC: F21V8/00 ,  G02B5/00

Abstract: A backlight module and display device are provided. The backlight module includes: a light source module including a transparent block, a light source and a first grating group, and a light emergent module including a light guide plate and a second grating group. The light source emits initial lights to the first grating group which diffracts initial into first diffracted lights, and transmits first diffracted lights in light guide plate to second grating group; the second grating group diffracts the first diffracted lights into second diffracted lights, enables the second diffracted lights to be emergent from backlight module. When an included angle between initial lights and side surface of light guide plate is greater than 0°, an angle between second diffracted lights and side surface is smaller than an angle between initial lights and side surface, thereby improving collimation degree of lights emergent from backlight module.

公开(公告)号：US11126054B2

公开(公告)日：2021-09-21

申请号：US15767849

申请日：2017-09-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wei Wang ,  Yafeng Yang ,  Xiaochuan Chen ,  Xianqin Meng ,  Jifeng Tan

IPC: G02F1/137 ,  G02F1/29 ,  F21V8/00 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/13 ,  G02B30/26

Abstract: A display panel and a display device are provided. The display panel includes: a lower substrate and an upper substrate cell-assembled together; a light-emitting control layer disposed between the lower substrate and the upper substrate; and a plurality of pixel units defined by a plurality of data lines and gate lines intersected with each other. Each pixel unit includes a plurality of subpixel areas. One or more side surfaces of the lower substrate are configured to receive incidence of the collimated light. The light-emitting control layer is configured to control the light-emitting directions and the light-emitting colors of the subpixel areas, to allow the light-emitting directions of the subpixel areas toward the central portion of the display panel. The light-emitting control layer is also configured to control the display grayscale of the subpixel areas.

公开(公告)号：US11035998B2

公开(公告)日：2021-06-15

申请号：US16323878

申请日：2018-05-14

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiandong Meng ,  Wei Wang ,  Xiaochuan Chen ,  Jifeng Tan ,  Jian Gao ,  Xianqin Meng ,  Pengxia Liang

IPC: F21V8/00 ,  G02B6/27 ,  G02B27/28 ,  G02B27/42 ,  G02F1/13357 ,  G02F1/29 ,  G02F1/1335

Abstract: A light guide structure is disclosed. The light guide structure includes a first waveguide layer having a first light incident surface and a first light exiting surface. The light guide structure includes a polarization beam-splitting structure on the first light exiting surface, configured to split light into first polarized light and second polarized light. The light guide structure includes a first polarization coupling grating disposed on the first light incident surface and configured to deflect the first polarized light, and a second waveguide layer having a second light incident surface and a second light exiting surface and disposed on the polarization beam-splitting structure. The light guide structure includes a second polarization coupling grating disposed between the second light incident surface and the polarization beam-splitting structure and configured to deflect the second polarized light.

公开(公告)号：US20210141139A1

公开(公告)日：2021-05-13

申请号：US16640802

申请日：2019-08-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiandong Meng ,  Wei Wang ,  Jifeng Tan ,  Xianqin Meng ,  Wenqing Zhao ,  Qiuyu Ling ,  Xiaochuan Chen

IPC: F21V8/00 ,  G02F1/13357 ,  G02F1/1335

Abstract: A light collimation structure includes a light guide plate (1) and a light extraction unit (2) on the light guide plate (1). The light extraction unit (2) may be configured to take out lights having a filtered first color having a narrow band of spectrum, a filtered second color having a narrow band of spectrum, and a filtered third color having a narrow band of spectrum in the light guide plate (1) to provide a collimated first color light, a collimated second color light and a collimated third color light.