公开(公告)号：US11226514B2

公开(公告)日：2022-01-18

申请号：US16887067

申请日：2020-05-29

Applicant: BOE Technology Group Co., Ltd.

Inventor： Sen Ma ,  Qian Wang ,  Zhongxiao Li ,  Qingxun Zhang ,  Wenqing Zhao ,  Xiaochuan Chen

IPC: G02F1/1335 ,  G02F1/1339 ,  G02F1/13357 ,  F21V8/00

Abstract: A display panel includes a light guide plate, a substrate, a reflector and a liquid crystal layer. A refractive index of the liquid crystal layer can vary between a minimum liquid crystal refractive index and a maximum liquid crystal refractive index. One side, facing the substrate, of the light guide plate includes a light entry region, light at least partially enters the liquid crystal layer through the light entry region and is propagated towards the reflector. The maximum liquid crystal refractive index is greater than a refractive index of the reflector, and the minimum reflective index is not greater than the refractive index of the reflector. When the refractive index of the liquid crystal layer is greater than the reflective index of the reflector, the reflector reflects at least a part of light entering the liquid crystal layer from the light entry region to the light guide plate.

公开(公告)号：US11215874B2

公开(公告)日：2022-01-04

申请号：US17196975

申请日：2021-03-09

Applicant: BOE Technology Group Co., Ltd.

Inventor： Sen Ma ,  Qian Wang ,  Tao Hong ,  Wenqing Zhao ,  Qingxun Zhang ,  Zhongxiao Li

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

Abstract: A light collimation device, a backlight module and a display panel are provided. The light collimation device includes a lampshade and a light guiding part, wherein the lampshade includes a plurality of curved reflecting parts, a first total reflecting part and a second total reflecting part. The curved reflecting part is configured to reflect part of light from a light source arranged at a focal point of curved reflecting part to the first total reflecting part. The first total reflecting part is configured to reflect part of incident light to the second total reflecting part and directly direct another part of light to the light guiding part. The second total reflecting part is configured to reflect incident light to the light guiding part. The light guiding part is configured to cause incident light to propagate in a total reflection.

公开(公告)号：US10656418B2

公开(公告)日：2020-05-19

申请号：US16453469

申请日：2019-06-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Sen Ma

IPC: H04N13/00 ,  G02B27/01 ,  B60K35/00 ,  H04N9/31

Abstract: A display apparatus includes a light-emitting component, a controller, a digital micro-mirror device, a first projection assembly and a second projection assembly. The controller is configured to alternately output a first image signal and a second image signal to the digital micro-mirror device. The digital micro-mirror device is configured such that in response to receiving the first image signal, at least one micro-lens is rotated to a respective first preset position, and that in response to receiving the second image signal, at least one micro-lens is rotated to a respective second preset position. The first projection assembly is configured to receive light reflected by the at least one micro-lens located at the respective first preset position and output a first image. The second projection assembly is configured to receive light reflected by the at least one micro-lens located at the respective second preset position and output a second image.

公开(公告)号：US20190293937A1

公开(公告)日：2019-09-26

申请号：US16134739

申请日：2018-09-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Sen Ma

IPC: G02B27/01 ,  G06T19/00 ,  G02B27/00

Abstract: The present disclosure provides an augmented reality display device. The augmented reality display device includes an adjustable light transmissive sheet, a spatial three-dimensional reconstruction component, and a control unit. The adjustable light transmissive sheet includes a plurality of pixels, the light transmission of each of the plurality of pixels being controllable. The spatial three-dimensional reconstruction component can obtain the depth value of each real point of the real scene in the user's field of view. The control unit can compare the depth value of the virtual point displayed in the same pixel with that of the real point. When the depth value of the real point is greater than that of the virtual point, the pixel is controlled to be opaque; and when the depth value of the real point is smaller than that of the virtual point, the pixel is controlled to be transparent.