公开(公告)号：US20200184926A1

公开(公告)日：2020-06-11

申请号：US16638285

申请日：2019-04-11

Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xinli MA

IPC: G09G5/10 ,  G02F1/13363 ,  G09G3/36

Abstract: A display device, a driving method thereof and a display system are disclosed. The display device includes a display panel, a polarizer disposed on a side, where a light emitting surface of the display panel is located, of the display panel, and a phase retarder disposed on a side, where a light emitting surface of the polarizer is located, of the polarizer. The display region of the display panel includes a peep-proof area and a compensation area; the phase retarder includes a first phase retarder and a second phase retarder respectively corresponding to the peep-proof area and the compensation area; both the first and second phase retarder are a quarter-wave phase retarder; and the first and second phase retarder are configured to respectively convert light that is incident into the first phase retarder and the second phase retarder into polarized light with opposite rotation directions, in operation.

公开(公告)号：US20180364505A1

公开(公告)日：2018-12-20

申请号：US15737007

申请日：2017-07-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/13363

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, and a liquid crystal layer, a first electrode, as second electrode, a waveguide layer and a grating layer between the first and second substrates; wherein the waveguide layer is on a side of the liquid crystal layer proximal to the first substrate; and the grating layer is in contact with the liquid crystal layer; 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 layer and the refractive index of the liquid crystal layer.

公开(公告)号：US20180217389A1

公开(公告)日：2018-08-02

申请号：US15749494

申请日：2017-06-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

IPC: G02B27/22 ,  G02B5/20

CPC classification number: G02B27/22 ,  G02B5/1819 ,  G02B5/201 ,  G02B27/4205 ,  H04N2213/001

Abstract: The present disclosure provides a display device. The display device comprises a display panel and a grating layer, wherein along a direction pointing from a center of a left-eye field-of-view central area of the display device to a non left-eye field-of-view central area of the display device, a grating period of a left-eye grating region of a first color, a grating period of a left-eye grating region of a second color, and a grating period of a left-eye grating region of a third color all decrease gradually; along a direction pointing from a center of a right-eye field-of-view central area of the display device to a non right-eye field-of-view central area of the display device, a grating period of a right-eye grating region of the first color, a grating period of a right-eye grating region of the second color, and a grating period of a right-eye grating region of the third color all decrease gradually.

公开(公告)号：US20180217306A1

公开(公告)日：2018-08-02

申请号：US15568068

申请日：2017-04-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

IPC: G02B5/18

CPC classification number: G02B5/1819 ,  G02B5/1842 ,  G02B5/1871 ,  G02B5/201 ,  G02F1/1335 ,  G02F1/133504 ,  G02F2201/52

Abstract: A display device includes a display panel and a grating layer inside or outside the display panel. The display panel includes R pixels, G pixels and B pixels. The grating layer includes a R grating region, a G grating region and a B grating region; along a direction from a center of a central area of the view field of the display device to a non-central area of the view field, each of grating periods of the R, G and B grating regions gradually decreases; and lights emitted from positions of the display device corresponding to the R pixel, the G pixel and the B pixel are emitted respectively along straight lines formed by the position of the R pixel and the viewer, formed by the position of the G pixel and the viewer and formed by the position of the B pixel and the viewer.

公开(公告)号：US20170162090A1

公开(公告)日：2017-06-08

申请号：US14913560

申请日：2015-09-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xinli MA ,  Hangman LAI

IPC: G09G3/00 ,  G01J1/42 ,  G01M11/00

CPC classification number: G09G3/006 ,  G01J1/42 ,  G01M11/00 ,  G01N21/958 ,  G02F1/1309 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2360/145

Abstract: Embodiments of the present invention provide a device and a method for testing transparency effect of a transparent display substrate. The device comprises a transparency identification module, an optical measurement unit and a reference object including two kinds of regions of different colors. The optical measurement unit is able to directly measure brightness of the two kinds of regions of different colors of the reference object to acquire a first brightness difference, and to measure brightness of the two kinds of regions of different colors of the reference object through the transparent display substrate to acquire a second brightness difference. Based on the first brightness difference and the second brightness difference, the transparency identification module calculates identification degree ID of the transparent display substrate according to the equation: ID = Δ   L 2 Δ   L 1 × 100  % , where ΔL1 is the first brightness difference and ΔL2 is the second brightness difference. Embodiments of the present invention may eliminate the influence of ambient light on the test and increase the test accuracy of the transparent display substrate.