Display driver circuitry for liquid crystal displays with semiconducting-oxide thin-film transistors

摘要

An electronic device may include a display having an array of display pixels on a substrate. The display pixels may be organic light-emitting diode display pixels or display pixels in a liquid crystal display. In an organic light-emitting diode display, hybrid thin-film transistor structures may be formed that include semiconducting oxide thin-film transistors, silicon thin-film transistors, and capacitor structures. The capacitor structures may overlap the semiconducting oxide thin-film transistors. Organic light-emitting diode display pixels may have combinations of oxide and silicon transistors. In a liquid crystal display, display driver circuitry may include silicon thin-film transistor circuitry and display pixels may be based on oxide thin-film transistors. A single layer or two different layers of gate metal may be used in forming silicon transistor gates and oxide transistor gates. A silicon transistor may have a gate that overlaps a floating gate structure.

主权项

1. A display, comprising:
a substrate; an array of display pixel circuits on the substrate; and display driver circuitry that drives gate line signals into the array of display pixel circuits, wherein the display driver circuitry includes level shifter circuitry, a shift register coupled to the level shifter circuitry, and buffer circuitry coupled to the level shifter circuitry, wherein the shift register supplies signals with a first voltage swing, wherein the level shifter circuitry adjusts the first voltage swing to a second voltage swing, and wherein the buffer circuitry receives the signals from the shift register with the first voltage swing and receives signals from the level shifter circuitry with the second voltage swing.