Apple Inc.

Aida R Colon-Berrios

Yun Yu Wang

Chin-Wei Lin

Fan Gui

Mohammad Reza Esmaeili Rad

Ran Tu

Xin Lin

Levent Erdal Aygun

A display may include an array of pixels. Each pixel in the array may include a drive transistor, emission transistors, a data loading transistor, a gate voltage setting transistor, an initialization transistor, an anode reset transistor, a storage capacitor, and an optional current boosting capacitor coupled in series with an isolation transistor. A data refresh may include a initialization phase, a threshold voltage sampling phase, and a data programming phase. The threshold voltage sampling phase can be substantially longer than the data programming phase to decrease a current sampling level during the threshold voltage sampling phase, which helps reduce the display luminance sensitivity to temperature variations. During a data refresh, the isolation transistor can be turned on to provide current boosting. During emission periods, the isolation transistor is turned off to prevent cathode noise from potentially coupling through to one or more direct-current voltage nodes in the pixel.

Electronic devices with displays for mitigating cathode noise

Growing community of inventors

Cupertino, CA, United States of America

Aida R Colon-Berrios