Apple Inc.

ChoongHo Lee

Tsung-Ting Tsai

Chin-Wei Lin

Ting-Kuo Chang

Vasudha Gupta

Warren S Rieutort-Louis

Cheng-Ho Yu

Stephen S Poon

Younggu Lee

Doh-Hyoung Lee

Jungmin Lee

Jinkwang Kim

Shih Chang Chang

Abbas Jamshidi Roudbari

Jiun-Jye Chang

Yuchi Che

An organic light-emitting diode display may have thin-film transistor circuitry formed on a substrate. The display and substrate may have rounded corners. A pixel definition layer may be formed on the thin-film transistor circuitry. Openings in the pixel definition layer may be provided with emissive material overlapping respective anodes for organic light-emitting diodes. A cathode layer may cover the array of pixels. A ground power supply path may be used to distribute a ground voltage to the cathode layer. The ground power supply path may be formed from a metal layer that is shorted to the cathode layer using portions of a metal layer that forms anodes for the diodes, may be formed from a mesh shaped metal pattern, may have L-shaped path segments, may include laser-deposited metal on the cathode layer, and may have other structures that facilitate distribution of the ground power supply.

Power and data routing structures for organic light-emitting diode displays

An organic light-emitting diode display may have thin-film transistor circuitry formed on a substrate. The display and substrate may have rounded corners. A pixel definition layer may be formed on the thin-film transistor circuitry. Openings in the pixel definition layer may be provided with emissive material overlapping respective anodes for organic light-emitting diodes. A cathode layer may cover the array of pixels. A ground power supply path may be used to distribute a ground voltage to the cathode layer. The ground power supply path may be formed from a metal layer that is shorted to the cathode layer using portions of a metal layer that forms anodes, may be formed from a mesh shaped metal pattern, may have L-shaped path segments, and may include laser-deposited metal on the cathode layer. Data lines may be formed from metal layers in the active area to accommodate the rounded corners of the display.

An organic light-emitting diode display may have thin-film transistor circuitry formed on a substrate. A pixel definition layer may be formed on the thin-film transistor circuitry. Openings in the pixel definition layer may be provided with emissive material overlapping split anodes that are separated by anode gaps. The anode gaps may extend vertically and horizontally or may extend diagonally. The pixel definition layer openings may have edges that extend vertically and horizontally or that extend diagonally. A display may have three different pixel colors or may have four different pixel colors. Each pixel definition layer opening may have a pair of split anodes that are overlapped by a common layer of emissive material or may have four split anodes that are overlapped by a common layer of emissive material.

Organic light-emitting diode display with split anodes

An electronic device may include a display having an array of organic light-emitting diode display pixels. The display pixels may have subpixels of different colors. The subpixels may include red subpixels, green subpixels, and blue subpixels. The subpixels may be provided with shapes and orientations that improve manufacturing tolerances. Subpixels such as green and red subpixels may have hexagonal shapes while blue subpixel structures may be provided with diamond shapes coupled in pairs to form barbell-shaped blue subpixels. Subpixels can also be angled at 45&#xb0; relative to horizontal. Subpixels ma have shapes that overlap adjacent display pixels. For example, an array of display pixels that has been rotated by 45&#xb0; relative to the edges of a display substrate may have blue subpixels and or red subpixels that are shared between pairs of adjacent display pixels in an at of display pixels.

Pixel patterns for organic light-emitting diode display

Growing community of inventors

Cupertino, CA, United States of America

ChoongHo Lee