Patent ID: 9478182
Filing Date: 2016-10-25
CPC Classification: G09G

Claim Text:
1. A quantum dot (nano-crystal) display, comprising: a light source layer comprising light sources; a display modulation layer comprising an array of modulation elements; a controller configured to receive image data and to determine first drive signals for the light source layer based at least in part on the image data, the light source layer configured to emit a first spatially varying light pattern in response to the first drive signals; a quantum dot (nano-crystal) conversion layer interposed in an optical path between the light source modulation layer and the display modulation layer and configured to receive the first spatially varying light pattern, the conversion layer comprising one or more quantum dot (nano-crystal) based materials configured to cause a second spatially varying light pattern in response to receiving the first spatially varying light pattern, the second spatially varying light pattern having a spectral distribution different from that of the first spatially varying light pattern; wherein the controller is configured to determine second drive signals for the modulation elements of the display modulation layer based at least in part on the image data and estimated expected characteristics of the second spatially varying light pattern made using a transfer function model relating the first spatially varying light pattern received at the conversion layer to the second spatially varying light pattern affected by the quantum dot (nano-crystal) based materials in the conversion layer and received at the display modulation layer; wherein the controller is configured to determine an estimate of the expected characteristics of the second spatially varying light pattern received at the display modulation layer based at least in part on the first drive signals and modified point spread functions of the light sources, the modified point spread functions incorporating the transfer function of the quantum dot (nano-crystal) based materials; and wherein the conversion layer comprises a patterned plurality of regions, each region comprising a plurality of sub-regions, and the plurality of sub-regions within each region comprise a red sub-region which emits light having a generally red central wavelength, a green sub-region which emits light having a generally green central wavelength and a blue sub-region which emits light having a generally blue central wavelength.