Device and method for improving AMOLED driving

Patent metadata

Field	Value
Publication number	US-9305941-B2
Application number	US-201213667942-A
Country	US
Kind code	B2
Filing date	Nov 2, 2012
Priority date	Nov 2, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

Devices and methods for increasing the aperture ratio and providing more precise gray level control to pixels in an active matrix organic light emitting diode (AMOLED) display are provided. By way of example, one embodiment includes disposing a gate insulator and an interlayer dielectric material between a gate electrode of a thin-film transistor of a driving circuit and a channel of the thin-film transistor. The improved structure of the driving circuit facilitates a higher voltage range for controlling the gray level of the pixels, and may increase the aperture ratio of the pixels.

First claim

What is claimed is:

1. A display for an electronic device comprising: an array of pixels, each pixel comprising:
a portion of a first thin-film transistor (TFT) disposed over a substrate, wherein the portion of the first TFT comprises a first source, a first drain, and a first channel disposed adjacent to the first source and the first drain;
a portion of a second TFT disposed over the substrate, wherein the portion of the second TFT comprises a second source, a second drain, an…

Assignees

• Apple Inc

Inventors

• Chang Shih Chang
• Chen yu cheng

Classifications

• H10D86/431 Primary

  Electricity · mapped topic

• H10D86/60 Primary

  Electricity · mapped topic

• H01L27/1237 Primary

  Electricity · mapped topic