Apple Inc.

Xingfeng He

Shih Chang Chang

Ting-Kuo Chang

Chieh-Wei Chen

Shinya Ono

Lei Yuan

Chia-Yu Chen

Doh-Hyoung Lee

Jung Yen Huang

Niva A Ran

Po-Chun Yeh

Jiun-Jye Chang

Chuan-Jung Lin

Gwanwoo Park

Ching-Sang Chuang

Themistoklis Afentakis

Caleb Coburn

Chih-Hung Yu

Yung Fong Kao

Shih Lun Huang

An organic light-emitting diode (OLED) display may have an array of organic light-emitting diode pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and the accompanying cross-talk, the display may include active and/or passive leakage-mitigating structures. The passive leakage-mitigating structures may have an undercut that causes discontinuities in the overlying OLED layers. Active leakage-mitigating structures may include a conductive layer (e.g., a conductive ring) that drains leakage current to ground. Alternatively, the active leakage-mitigating structures may include a gate electrode modulator with a variable voltage that stops the current flow laterally.

Organic light-emitting diode display with passive leakage-reducing structures

Growing community of inventors

Santa Clara, CA, United States of America

Xingfeng He