Ambient reflective display with color filters
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorSean P. Rodrigues
Life of this patent
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Abstract
Various arrangements described herein relate to a display that uses ambient light to generate images. In one embodiment, a display is disclosed. The display includes an inside transparent layer disposed parallel to and spaced apart from an outside transparent layer. The display includes a liquid crystal (LC) layer disposed between the inside transparent layer and the outside transparent layer. The display includes ground electrodes disposed between the LC layer and the outside transparent layer. The display includes pixel electrodes disposed between the inside transparent layer and the LC layer. The display includes light filters arranged relative to the pixel electrodes and the ground electrodes to form pixels with separate colors of each pixel being formed from individual ones of the light filters.
Claims19
A display, comprising:
- an inside transparent layer disposed parallel to and spaced apart from an outside transparent layer;
- a liquid crystal (LC) layer disposed between the inside transparent layer and the outside transparent layer;
- ground electrodes disposed between the LC layer and the outside transparent layer;
- pixel electrodes disposed between the inside transparent layer and the LC layer;
- and
- light filters arranged relative to the pixel electrodes and the ground electrodes to form pixels with separate colors of each of the pixels being formed from individual ones of the light filters, wherein the display is configured to use external ambient light that is incident on the display as a light source for illuminating the pixels via the light filters without the use of a light emitting device, wherein a viewable region of the display includes transparent area where no subpixels are formed, and wherein the transparent area transmits incident light.
A transparent display, comprising:
- an inside transparent layer disposed parallel to and spaced apart from an outside transparent layer;
- a liquid crystal (LC) layer disposed between the inside transparent layer and the outside transparent layer and being formed from a graded cholesteric liquid crystal (CLC);
- ground electrodes disposed between the LC layer and the outside transparent layer;
- pixel electrodes disposed between the inside transparent layer and the LC layer;
- and
- pixels formed from an arrangement of light filters relative to the pixel electrodes and the ground electrodes with subpixels of separates ones of the pixels being formed from individual ones of the light filters, wherein the transparent display is configured to use external ambient light that is incident on the transparent display as a light source for illuminating the pixels via the light filters without the use of a light emitting device.
A vehicle window, comprising:
- an inside transparent layer disposed parallel to and spaced apart from an outside transparent layer;
- a liquid crystal (LC) layer disposed between the inside transparent layer and the outside transparent layer and being formed from a graded cholesteric liquid crystal (CLC);
- ground electrodes disposed between the LC layer and the outside transparent layer;
- pixel electrodes disposed between the inside transparent layer and the LC layer;
- pixels form from an arrangement of light filters relative to the pixel electrodes and the ground electrodes with subpixels of separate ones of the separate pixels being formed from individual ones of the light filters, wherein the vehicle window is configured to use external ambient light that is generated externally as a light source for illuminating the pixels via the light filters without the use of a light emitting device.
Dependencies are inferred from the claim text.