Apple Inc.

Yuichi Okuda

Derek Keith Shaeffer

Shingo Hatanaka

Hopil Bae

Yafei Bi

Kingsuk Brahma

Jie Won Ryu

Mohammad Bagher Vahid Far

Baris Cagdaser

Jesse Aaron Richmond

John T Wetherell

Jaeyoung Kang

Nobutaka Shimamura

A system includes a pixel that emits light based on a signal provided to the pixel. The system may also include a buffer circuit having a differential pair stage, a cascade stage, and an output stage. The differential pair stage may receive a common mode voltage signal via a first switch in response to the first switch receiving a first signal that causes the first switch to close. The differential pair stage may couple a capacitor to the output stage via a second switch that operate based on a second signal, such that the capacitor reduces an offset provided by one or more circuit components in the differential pair stage, the cascade stage, the output stage, or any combination thereof. The differential pair stage may output the common mode voltage to the pixel via the output stage in response to the first signal being present.

Auto-zero applied buffer for display circuitry

A device includes a resistor string that includes a plurality resistors with voltage taps disposed therebetween. The device may select one particular voltage tap of the plurality of voltage taps based on received gray level data for a pixel of a display. The device also includes a first amplifier that may be coupled to a first terminal end of the resistor string. The device additionally includes a second amplifier that may be coupled to a second terminal end of the resistor string, wherein the plurality of voltage taps may each supply a tap voltage derived from a voltage between the first amplifier and the second amplifier, wherein any tap amplifier of the device coupled to a voltage tap of the plurality of voltage taps provides a reference voltage thereto.

Digital to analog converter

Growing community of inventors

Saitama, Japan

Yuichi Okuda