Apple Inc.

Nai-Chih Kao

Rui Liu

Kwang Ohk Cheon

Wendi Chang

KiBeom Kim

Shih Chang Chang

Cheng Kai Chen

Tsung-Ting Tsai

Ting-Kuo Chang

Abbas Jamshidi Roudbari

Shin-Hung Yeh

Andrew C Lin

Jae Won Choi

Lun Tsai

Meng-Huan Ho

Aleksandr N Polyakov

Takahide Ishii

Chih-Lei Chen

Chuan-Jung Lin

Yu-Wen Liu

Chien Lu

Chin Wei Hsu

Hui Lu

Pei-Ling Lin

Yu Hung Chen

Chen-Yue Li

Shan-Jen Yu

Yusuke Fujino

Yu-Chuan Pai

Jianhong Lin

HanChi Ting

Chuan-Sheng Wei

A display may have organic light-emitting diode pixels formed from thin-film circuitry. The thin-film circuitry may be formed in thin-film transistor (TFT) layers and the organic light-emitting diodes may include anodes and cathodes and an organic emissive layer formed over the TFT layers between the anodes and cathodes. The organic emissive layer may be formed via chemical evaporation techniques. The display may include moisture blocking structures such as organic emissive layer disconnecting structures that introduce one or more gaps in the organic emissive layer during evaporation so that any potential moisture permeating path from the display panel edge to the active area of the display is completely terminated.

Organic light-emitting diode display panels with moisture blocking structures

A display may have an array of organic light-emitting diode (OLED) 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 cross-talk, the thickness of at least one of the OLED layers may be reduced. To maintain the optical cavity of the pixels, transparent optical spacer structures may be inserted. Alternatively, the thickness of the anodes can be increased. To accommodate a common prime layer within the OLED layers, the optical spacers or anodes may be separately patterned to have different thicknesses. Grating structures and photonic crystal structures may be embedded as part of the optical spacers to help control emission at selected viewing angles.

Organic light-emitting diode display with structured electrode

A display may have an array of pixels formed from organic light-emitting diodes and thin-film transistor circuitry. Each pixel may include organic layers interposed between an anode and a cathode. The organic layers may emit out-coupled light that escapes the display and waveguided light that is waveguided within the organic layers. A reflector may be placed at the edge of the organic layers to reflect the waveguided light out of the display. The reflector may be located within a pixel definition layer and may be formed from metal or may be formed from one or more interfaces between high-refractive-index material and low-refractive-index material. The reflector may be formed from an extended portion of the pixel anode. The reflector may be formed from light-reflecting particles that are suspended in the pixel definition layer.

Organic light-emitting diode displays with reflectors

Growing community of inventors

Taoyuan, Taiwan

Nai-Chih Kao