公开(公告)号：US20250076557A1

公开(公告)日：2025-03-06

申请号：US18401296

申请日：2023-12-29

Applicant: Meta Platforms Technologies, LLC

Inventor： Guohua Wei ,  Zhujun Shi ,  Min Chul Shin ,  Risheng Cheng ,  Giuseppe Calafiore

IPC: F21V8/00

Abstract: A display system may include a display element having an array of pixels, at least one light source, and a photonic integrated circuit (PIC) illumination element overlapping the display element. The PIC illumination element may include at least one in-coupler for in-coupling light from the at least one light source and an array of out-coupling emitters configured to emit light from the PIC illumination element toward the display element. The array of out-coupling emitters may not be aligned pixel-by-pixel with the array of pixels. Various other devices, systems, and methods are also disclosed.

公开(公告)号：US20250130447A1

公开(公告)日：2025-04-24

申请号：US18405521

申请日：2024-01-05

Applicant: Meta Platforms Technologies, LLC

Inventor： Guohua Wei ,  Peter Topalian ,  Min Chul Shin ,  Risheng Cheng ,  Zhujun Shi ,  Zhaoning Yu ,  Jonathan Robert Peterson ,  Zhimin Shi ,  Giuseppe Calafiore ,  Heqing Huang

IPC: G02F1/03 ,  G02B27/01 ,  G02F1/035 ,  G02F1/21

Abstract: In some examples, a device may include a backlight unit configured to illuminate a display. In some examples, a light source may direct light into an active photonic circuit. The active photonic circuit may include optical switches controllable to distribute the light to illuminate display zones. An active photonic circuit may include an arrangement of optical switches configured to allow particular zones to be raster scanned, for example, using light distribution and outcoupling further using a passive photonic circuit. The illumination intensity for each zone may be controlled using the optical switches and/or with variation of the light source intensity. In some examples, the illumination intensity for each zone can be varied based on the displayed content, allowing improved contrast ratios. In some examples, all zones may be illuminated simultaneously with a zonal illumination intensity based on displayed content. Other devices, methods, systems, and computer-readable media are also disclosed.

公开(公告)号：US20250110277A1

公开(公告)日：2025-04-03

申请号：US18895040

申请日：2024-09-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Zhujun Shi ,  Min Chul Shin ,  Risheng Cheng ,  Steven Alexander-Boyd Hickman ,  Guohua Wei ,  Giuseppe Calafiore ,  Zhimin Shi ,  Lei Wang

IPC: G02B6/28 ,  G02B27/48

Abstract: The disclosed method may include receiving laser light from a laser light source. The method may also include directing and distributing the laser light onto a laser-based panel display to render pixels having a reduced spatial coherence and a preserved pixel pitch. For example, the pixels may be rendered as a result of an optical path distance between the pixels being greater than a coherent length of the laser light. Alternatively or additionally, the pixels may be rendered as a result of incoherent addition of light from at least one of multiple ports or multiple sources. Alternatively or additionally, the pixels may be rendered as a result of active modulation of the laser light. Alternatively or additionally, the pixels may be rendered as a result of quasi-random placement of outcoupling elements. Various other methods, systems, and computer-readable media are also disclosed.

公开(公告)号：US20250085592A1

公开(公告)日：2025-03-13

申请号：US18826044

申请日：2024-09-05

Applicant: Meta Platforms Technologies, LLC

Inventor： Zhujun Shi ,  Min Chul Shin ,  Guohua Wei ,  Giuseppe Calafiore

IPC: G02F1/13357

Abstract: The disclosed method may include configuring an illuminator to emit a first path of light in a first direction and to emit a second path of light in a second direction. The method may additionally include, configuring a reflector to reflect the first path of light in the second direction. The method may also include configuring the first path of light reflected in the second direction to interfere destructively with the second path of light when a liquid crystal is set to an off state. Various other methods, systems, and computer-readable media are also disclosed.