HIGH EFFICIENCY QUANTUM DOT LIQUID CRYSTAL DISPLAYS

    公开(公告)号:US20190049781A1

    公开(公告)日:2019-02-14

    申请号:US16153513

    申请日:2018-10-05

    Abstract: The present disclosure is directed to quantum dot LCD display systems and methods that use a digital optics polarizer to beneficially and advantageously provide enhanced performance and substantially lower power draw. The digital optics polarizer is disposed as a metasurface between the LCD layer and the quantum dot layer within the LCD display device. The digital optics polarizer is formed using a dielectric material, such as TiO2, that does not cause reflectivity and ohmic loss issues typically encountered with wire grid polarizers. The digital optics polarizer may be patterned, deposited, or otherwise disposed across all or a portion of the LCD layer, the quantum dot layer, or may be “sandwiched” between and proximate the LCD layer and the quantum dot layer. The elimination of ohmic losses in the digital optics polarizer significantly improves the energy efficiency of the LCD display.

    MONOLITHIC MlCRO LED DISPLAY
    3.
    发明申请

    公开(公告)号:US20200175908A1

    公开(公告)日:2020-06-04

    申请号:US16787499

    申请日:2020-02-11

    Abstract: A micro display, which includes LEDs and TFTs of a TFT electronic control circuit for controlling the LEDs, is produced monolithically on a silicon, silicon carbide, or sapphire wafer. The display includes red, green, and blue micro LEDs, and electronic control circuits include TFTs with Indium gallium zinc oxide (IGZO) channels or Indium phosphide (InP) channels. The TFTs are formed above the LEDs and laterally removed from the LEDs and paths of light emissions from the plurality of LEDs to prevent light blocking by the TFTs.

    COMPUTATIONALLY EFFICIENT STRUCTURED LIGHT IMAGING SYSTEM

    公开(公告)号:US20190107389A1

    公开(公告)日:2019-04-11

    申请号:US16209444

    申请日:2018-12-04

    Inventor: KHALED AHMED

    Abstract: A laser source for use in a structured light projector includes a substrate, one or more first VCSELs on the substrate, and one or more second VCSELs on the substrate. The one or more first VCSELs each have a first aperture width and each separately extend above a surface of the substrate. The one or more second VCSELs each have a second aperture width different from the first aperture width, and each separately extend above a surface of the substrate. Using an array of VCSELs with different aperture widths provides emitted radiation having different wavelengths, thus providing different speckle patterns. When the different speckle patterns are averaged upon being received at the detector, speckle noise is reduced. The VCSEL can also include a plurality of subwavelength structures to steer the light output. Such subwavelength structures can also be used on the surface of other VCSELs, including standard VCSELs.

    SADDLE CHANNEL THIN FILM TRANSISTOR FOR DRIVING MICRO LEDS OR OLEDS IN ULTRAHIGH RESOLUTION DISPLAYS

    公开(公告)号:US20180182831A1

    公开(公告)日:2018-06-28

    申请号:US15390366

    申请日:2016-12-23

    Abstract: A thin film transistor (TFT) to control a light emitting diode (LED) or an organic light emitting diode (OLED) includes a channel region configured as a saddle channel extending between the drain region and the source region of the TFT. The saddle channel is formed by deposition of channel material on a fin structure, and the contour of the saddle channel is defined by the contour of the fin structure. Deposition of the channel material for the saddle channel may be performed by: (i) atomic layer deposition (ALD) of amorphous silicon; (ii) ALD of amorphous silicon followed by annealing to form polycrystalline silicon; or (iii) deposition of indium gallium zinc oxide (IGZO) material by one of ALD, plasma-enhanced atomic layer deposition (PEALD), chemical vapor deposition (CVD), or plasma-enhanced chemical vapor deposition (PECVD).

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