US 11,804,197 B1 · Optical systems having overdriven fLCOS display panels

Abstract

A display may include illumination optics, a ferroelectric liquid crystal on silicon (fLCOS) panel, and a waveguide. The display may include a temperature sensor that gathers temperature sensor data. Control circuitry may select a non-square wave drive voltage waveform based on the gathered temperature sensor data and/or based on frame history information for the fLCOS display panel. The control circuitry may control the fLCOS panel to produce image light by driving the fLCOS panel using the selected non-square wave drive voltage waveform. The non-square wave drive voltage waveform may be an overdrive waveform or an underdrive waveform. This may serve to optimize the reflectance of the fLCOS display panel and thus the optical performance of the display module regardless of operating temperature and frame history.

Claims18

Dependent claims

An electronic device comprising:

a light source configured to produce illumination;
a reflective panel configured to produce light based on the illumination and image data;
a waveguide configured to propagate the light via total internal reflection;
and
a temperature sensor configured to gather temperature sensor data, wherein the reflective panel is configured to produce the light using a non-square wave drive voltage waveform that has a first shape when the temperature sensor data is at a first level and that has a second shape that is different from the first shape when the temperature sensor data is at a second level.

2 more elements

Dependencies are inferred from the claim text.

Optical systems having overdriven fLCOS display panels

Life of this patent

Optical systems having overdriven fLCOS display panels

Life of this patent

Abstract

Claims18