公开(公告)号：US10444918B2

公开(公告)日：2019-10-15

申请号：US15691283

申请日：2017-08-30

Applicant: Apple Inc.

Inventor： Wencong Zhu ,  Albert Lin ,  Alexander A. Penn ,  Ashray Vinayak Gogte ,  Chun-Hao Tung ,  Hao Zhang ,  Hui Zhou ,  John Z. Zhong ,  Steven P. Hotelling ,  Sudip Mondal ,  Sumant Ranganathan ,  Sunggu Kang ,  Ramachandran Chundru ,  Viswa B. Pilla

IPC: G06F3/044

Abstract: Touch sensor configurations for reducing electrostatic discharge events in the border area of a touch sensor panel is disclosed. Touch sensors (e.g., electrodes formed on the cover material and/or the opaque mask) can be susceptible to certain events such as arcing and discharge/joule heating, which may negatively affect touch sensor performance. Examples of the disclosure can include increasing the trace width, spacing, and/or thickness in the border area relative to the trace width, spacing, and/or thickness in the visible/active area along one or more sides of the touch sensor panel. In some examples, touch electrodes can be located exclusively in the visible/active areas along one or more sides of the touch sensor panel, while dummy sections can be included in both the border and visible/active areas. Additionally or alternatively, one or more gaps between adjacent touch electrodes in the border area or serpentine routing can be included.

公开(公告)号：US20250093567A1

公开(公告)日：2025-03-20

申请号：US18805955

申请日：2024-08-15

Applicant: Apple Inc.

Inventor： Brandon Born ,  Wencong Zhu ,  Jong Young Hong ,  Se Baek Oh

IPC: F21V8/00 ,  G02B27/01

Abstract: A display may include a waveguide that directs image light to an eye box. The waveguide may include an optical coupler that redirects and replicates the light. The coupler may include a surface relief grating (SRG). The SRG may have a pitch that varies continuously along an axis orthogonal its ridges. The pitch may vary sinusoidally, linearly, parabolically, or according to other continuous and differentiable functions of position along the axis. The SRG may diffract the light. Upon diffracting the light, the SRG may impart a phase to the light. The phase may vary continuously as a function of position along a first axis and may, if desired, vary continuously as a function of position along a second axis orthogonal to the first axis. The SRG may prevent formation of coherent light paths after replication, thereby maximizing the efficiency of the system.

公开(公告)号：US20240151982A1

公开(公告)日：2024-05-09

申请号：US18407081

申请日：2024-01-08

Applicant: Apple Inc.

Inventor： Yifei Wang ,  Xiaoyong Fu ,  Wencong Zhu ,  Xianwei Zhao ,  Brandon Born

IPC: G02B27/09 ,  G02B27/01 ,  G02B27/42

CPC classification number: G02B27/0944 ,  G02B27/0172 ,  G02B27/4272 ,  G02B2027/0174 ,  G02B2207/101

Abstract: An electronic device may have a display system. The display system may include a waveguide, an input coupler, and a surface relief grating (SRG) structure. The SRG structure may be formed from a high-index material that includes titanium dioxide nanoparticles. To increase the refractive index of the high-index material, the ratio of the size of the nanoparticle core to the size of the capping layer may be increased. The high-index material may also include nanoparticles of different sizes to increase the packing density of the nanoparticles. The SRG structure may be depth modulated in a lateral direction to maximize efficiency. The SRG structure may include slanted ridges covered by an encapsulant. The SRG structure may include a blazed grating with ridges that are covered by a coating and encapsulated by an encapsulant.