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

US11251259B2 · kind B2 · utility

Assignee

• Apple Inc. · US

Inventors

• Tiffany T. Moy · Redwood City, US
• Yuchi Che · Santa Clara, US
• Seonpil Jang · Cupertino, US
• Warren S. Rieutort-Louis · Cupertino, US
• Bhadrinarayana Lalgudi Visweswaran · Princeton, US
• Jae Won Choi · Dallas, US
• Abbas Jamshidi Roudbari · Saratoga, US
• Myung-kwan Ryu · Seojong-myeon, KR
• Hirokazu Yamagata · Tokyo, JP
• Keisuke Otsu · Yokohama, JP

Key dates

• Filing date: Jul 27, 2020
• Grant date: Feb 15, 2022
• Expiry date: Jul 27, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549

Abstract

An organic light-emitting diode display may have rounded corners. A negative power supply path may be used to distribute a negative voltage to a cathode layer, while a positive power supply path may be used to distribute a positive power supply voltage to each pixel in the display. The positive power supply path may have a cutout that is occupied by the negative power supply path to decrease resistance of the negative power supply path in a rounded corner of the display. To mitigate reflections caused by the positive power supply path being formed over tightly spaced data lines, the positive power supply path may be omitted in a rounded corner of the display, a shielding layer may be formed over the positive power supply path in the rounded corner, or non-linear gate lines may be formed over the positive power supply path.