公开(公告)号：WO2022164666A1

公开(公告)日：2022-08-04

申请号：PCT/US2022/012690

申请日：2022-01-17

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： CHEN, Dong ,  KIM, Cheonhong ,  PENG, Fenglin ,  GENG, Ying ,  SULAI, Yusufu Njoni Bamaxam ,  GOLLIER, Jacques ,  SHI, Jianru ,  RAO, Linghui

IPC: G02B5/30 ,  G02B27/28 ,  G02F1/1335 ,  G02F1/13363 ,  G02B27/01 ,  G02B1/11 ,  G02B5/3016 ,  G02B5/3083 ,  G02F1/133638

Abstract: Ghost image formation due to reflections of image light by a display panel to an ocular lens may be suppressed by ensuring that the image light reflected by the lens does not get reflected by the display panel back towards the lens. To that end, the display panel may include a quarter-wave birefringent layer between the top polarizer of the display panel and a layer inside the display panel that the image light reflects from, such as a black grid layer or an active matrix layer.

公开(公告)号：WO2022240777A1

公开(公告)日：2022-11-17

申请号：PCT/US2022/028394

申请日：2022-05-09

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： KIM, Cheonhong ,  CHOI, Min Hyuk ,  QIAO, Wenhao

IPC: G09G3/32 ,  G09G3/3233 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0272 ,  G09G2320/0238 ,  G09G2320/0252 ,  G09G3/3291

Abstract: Embodiments relate to a display device with reduced scanning time by using a reference line separate from a data line to improve frame rate of the display device. A first pixel in a first row samples a reference voltage during a first period and samples a data voltage during a second period. A second pixel in a second row adjacent to the first row samples the reference voltage during a third period and samples the data voltage during a fourth period, where the third period overlaps with at least a portion of the second period. The reference voltage is provided by the reference line that is connected to a reference buffer, and the data voltage is provided by the data line connected to a source driver circuit.

公开(公告)号：WO2022240707A1

公开(公告)日：2022-11-17

申请号：PCT/US2022/028243

申请日：2022-05-08

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： KLEMENT, Alexander ,  CHOI, Min Hyuk ,  KIM, Cheonhong

IPC: G09G3/34 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2320/062 ,  G09G2320/0626 ,  G09G2320/0653 ,  G09G2320/10 ,  G09G2340/0435 ,  G09G2340/16 ,  G09G3/3406 ,  G09G3/3426 ,  G09G3/36 ,  G09G3/3614

Abstract: A display device dynamically determines a duration of the illumination period for a display frame to adjust an average brightness of a display device as the framerate dynamically changes. The display device includes a backlight unit (BLU) for providing light for displaying an image, a plurality of pixels for modulating the light provided by the BLU, and a controller circuit for controlling the BLU. The controller circuit measure a duration of a previous frame and determine a duration for an illumination period of a current frame based on the measured duration of the previous frame. The control circuit then controls the BLU based on the determined duration of the illumination period for the current frame.