公开(公告)号：US20210384947A1

公开(公告)日：2021-12-09

申请号：US17404869

申请日：2021-08-17

Applicant: Apple Inc.

Inventor： Hui Tong ,  Masayuki Hoshino ,  Ming Xu ,  Seigo Nakao ,  Daichi Imamura

IPC: H04B7/0456 ,  H04L25/03 ,  H04B7/06 ,  H04B7/024

Abstract: The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which contains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.

公开(公告)号：US10991330B1

公开(公告)日：2021-04-27

申请号：US16428663

申请日：2019-05-31

Applicant: Apple Inc.

Inventor： Jun Li ,  Hopil Bae ,  Chaohao Wang ,  Yue Chu ,  Anshi Liang ,  Ming Xu ,  Xiaokai Li ,  Yang Xu

IPC: G09G3/36 ,  G09G3/3266 ,  G09G1/00

Abstract: Aspects of the subject technology relate to electronic device display circuitry and methods of operating the display. The display circuitry includes gate-in-panel (GIP) drivers for each pixel row of a pixel array, and mode selection circuitry coupled between two of the GIP drivers. The mode selection circuitry receives a select signal to switch the display between a full-screen mode of operation and a split-screen mode of operation. The mode selection circuitry allows the pixel rows to be operated in a butterfly driving mode that facilitates reduction of optical artifacts when displaying augmented-reality or virtual-reality content with a multi-function display such as a display of a smartphone or a tablet.

公开(公告)号：US10937987B1

公开(公告)日：2021-03-02

申请号：US16428698

申请日：2019-05-31

Applicant: Apple Inc.

Inventor： Jean-Pierre S. Guillou ,  Meng-Huan Ho ,  Ming Xu ,  Rui Liu ,  Shawn R. Gettemy ,  Yi Qiao

IPC: H01L51/52 ,  H01L51/00 ,  H01L27/32

Abstract: An electronic device may have a flexible organic light-emitting diode display layer. The edge of the flexible display layer may be bent. The display may have pixels formed from organic light-emitting diodes having anodes characterized by anode surface normals. For pixels in some regions of the display such as the bent edge of the display, the display may be characterized by a display surface normal for a pixel that differs from an anode surface normal for the anode of the organic light-emitting diode of that pixel. By tilting the anodes in this way, color shifts due to off-axis viewing of the pixels in the bend edge of the display can be minimized. If desired, tilted anodes may have multiple areas with different tilts. Sets of pixels with different anode tilts or other characteristics that differ may be supplied with common pixel data values.

公开(公告)号：US09612470B2

公开(公告)日：2017-04-04

申请号：US14473342

申请日：2014-08-29

Applicant: Apple Inc.

Inventor： Sang Un Choi ,  Zhibing Ge ,  Shang-Chih Lin ,  Hiroshi Osawa ,  Ton-Yong Wang ,  Ming Xu

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/1339 ,  G02B5/20

CPC classification number: G02F1/133514 ,  G02B5/201 ,  G02F1/133512 ,  G02F1/133516 ,  G02F1/13394 ,  G02F2001/133519 ,  G02F2001/13398

Abstract: A display may have a layer of liquid crystal material between a color filter layer and a thin-film transistor layer. Column spacer structures may be formed between the color filter layer and the thin-film transistor layer to maintain a desired separation between the color filter and thin-film transistor layers. Column spacers may be deposited in column spacer regions of the color filter layer. The color filter layer may include rows of red, green, and blue color filter elements. Blue color filter material that forms blue color filter elements in the color filter layer may also be used to form a planar surface over red and green color filter elements in the column spacer regions. Using the blue color filter material to planarize the surface on which column spacers are formed ensures that the column spacers provide sufficient support for the display without requiring an additional planarization layer.