公开(公告)号：US11143812B2

公开(公告)日：2021-10-12

申请号：US16607227

申请日：2019-05-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiandong Meng ,  Wei Wang ,  Jifeng Tan ,  Xianqin Meng ,  Fangzhou Wang ,  Qiuyu Ling

IPC: F21V8/00 ,  G02B27/28 ,  G02F1/1335 ,  G02F1/29 ,  G02F1/1343

Abstract: The present disclosure relates to a display panel and a display device. The display panel includes: a beam splitting member disposed between a light extracting member and a liquid crystal layer, for splitting the light extracted from the light extracting member into linearly polarized lights with polarization directions perpendicular to each other; and a modulating member disposed on a side of the beam splitting member away from the light extracting member, for modulating the linearly polarized light that is incident from the beam splitting member into the liquid crystal layer.

公开(公告)号：US11119268B2

公开(公告)日：2021-09-14

申请号：US16638446

申请日：2019-10-10

Applicant: BOE Technology Group Co., Ltd.

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

IPC: G02F1/1335 ,  F21V8/00

Abstract: A backlight module is provided. The backlight module includes a light guide plate; a plurality of reflective gratings on a first side of the light guide plate; and a plurality of reflectors on a second side of the light guide plate. A respective one of the plurality of reflective gratings is configured to diffract and reflect a portion of light totally reflected in the light guide plate into diffracted light transmitting across the light guide plate from the first side toward the second side. A portion of the diffracted light has a respective wavelength range to be received by a respective reflector. The respective one of the plurality of reflectors is configured to reflect the portion of the diffracted light having the respective wavelength range transmitting from the second side toward the first side to a position between the respective grating and an adjacent reflective grating.

公开(公告)号：US11112557B2

公开(公告)日：2021-09-07

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：US11106074B2

公开(公告)日：2021-08-31

申请号：US16645515

申请日：2019-08-08

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/13357 ,  G02F1/1343

Abstract: The present disclosure provides a display panel and a display device. The display panel includes a base substrate and light-shielding strips. The base substrate includes light-shielding regions and light-transmitting regions. The display panel further includes a backlight module including a light guide plate and light extraction gratings. The display panel further includes a first electrode layer, a second electrode layer, and a liquid crystal layer. The first and second electrode layers are configured to, in response to a control signal, control the liquid crystal layer to forms a plurality of liquid crystal grating periods. The liquid crystal within each of the plurality of liquid crystal grating periods includes a plurality of segments with different refractive indices, and the refractive indices of the plurality of segments progressively increase in a direction perpendicular to an extending direction of the first electrodes in the first electrode layer.

公开(公告)号：US11099305B2

公开(公告)日：2021-08-24

申请号：US16862888

申请日：2020-04-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Qiuyu Ling ,  Wei Wang ,  Xiandong Meng ,  Xianqin Meng ,  Meng Yan ,  Yishan Tian ,  Yujiao Guo ,  Xiaochuan Chen

IPC: G02B3/00 ,  G02B27/30

Abstract: A near-eye display apparatus includes a pixel island configured to emit first light, and a combined micro lens disposed at a light exit side of the pixel island. The combined micro lens includes an additional micro lens and a first micro lens. The additional micro lens is configured to diverge the first light emitted by the pixel island. The first micro lens is disposed at a side of the additional micro lens away from the pixel island, and is configured to collimate light passed through the additional micro lens. The pixel island is disposed on a focal plane of the combined micro lens.

公开(公告)号：US20210255384A1

公开(公告)日：2021-08-19

申请号：US16638446

申请日：2019-10-10

Applicant: BOE Technology Group Co., Ltd.

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

IPC: F21V8/00 ,  G02F1/1335

Abstract: A backlight module is provided. The backlight module includes a light guide plate; a plurality of reflective gratings on a first side of the light guide plate; and a plurality of reflectors on a second side of the light guide plate. A respective one of the plurality of reflective gratings is configured to diffract and reflect a portion of light totally reflected in the light guide plate into diffracted light transmitting across the light guide plate from the first side toward the second side. A portion of the diffracted light has a respective wavelength range to be received by a respective reflector. The respective one of the plurality of reflectors is configured to reflect the portion of the diffracted light having the respective wavelength range transmitting from the second side toward the first side to a position between the respective grating and an adjacent reflective grating.

公开(公告)号：US10976593B2

公开(公告)日：2021-04-13

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 ,  G02B5/20 ,  G02B5/26

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：US20210011213A1

公开(公告)日：2021-01-14

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 ,  G02B27/28

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：US10578792B2

公开(公告)日：2020-03-03

申请号：US15953990

申请日：2018-04-16

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

IPC: F21V8/00 ,  G02B6/34

Abstract: A light source module includes a light guide member, a light exiting member, a first collimating light source, and a first light modulating member. The light guide member includes a first surface and a second surface disposed opposite to the first surface, the first surface is configured as a light exiting surface and comprise a light exiting region; the light exiting member is disposed on the first surface in the light exiting region; the first collimating light source is configured to provide a first collimated light; and the first light modulating member is disposed on one of the first surface and the second surface and configured to change a transmission direction of the first collimated light so as to make it incident into the light guide member and make at least part of the first collimated light meet a total reflection condition of the light guide member.

公开(公告)号：US20190056548A1

公开(公告)日：2019-02-21

申请号：US15756823

申请日：2017-09-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xianqin Meng ,  Xue Dong ,  Wei Wang ,  Xiaochuan Chen ,  Yafeng Yang ,  Jifeng Tan ,  Xiandong Meng ,  Jian Gao ,  Pengxia Liang ,  Ming Zhu

IPC: F21V8/00

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. In the embodiments of this disclosure, the light of the side-incident collimated light source is reflected totally at the interface between the waveguide layer and the first substrate under the principle of total reflection, and refracted at the interface between the waveguide layer and the second substrate, that is, the light is radiated from the surface of the second substrate, thus improving the efficiency of the light exiting from the single side of the light source assembly.