Arrays of electrodes to control pixel contrast at display devices
AssigneeHewlett-Packard Development Company, L.P.
InventorsHsing-Hung Hsieh, Chi Hao Chang, Ann Alejandro Villegas
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Abstract
An example device includes a light source, a liquid crystal layer, and an array of pixel electrodes disposed between the light source and the liquid crystal layer. The array of pixel electrodes is to control orientation of liquid crystal of the liquid crystal layer to modulate light incident from the light source to produce an image composed of pixels. The example device further includes an array of scattering electrodes to selectively influence orientation of liquid crystal of the liquid crystal layer to degrade contrast of selected pixels of the image.
Claims15
A device comprising:
- a light source;
- a liquid crystal layer;
- an array of pixel electrodes disposed between the light source and the liquid crystal layer, the array of pixel electrodes to control orientation of liquid crystal of the liquid crystal layer to modulate light incident from the light source to produce an image composed of pixels;
- and
- an array of scattering electrodes to selectively influence orientation of liquid crystal of the liquid crystal layer to degrade contrast of selected pixels of the image.
A device comprising:
- a liquid crystal layer;
- an array of pixel electrodes at the liquid crystal layer, the array of pixel electrodes to control orientation of liquid crystal of the liquid crystal layer to modulate light to produce an image composed of pixels;
- and
- a two-dimensional array of additional electrodes at the liquid crystal layer, the two-dimensional array of additional electrodes to selectively influence orientation of liquid crystal of the liquid crystal layer to control contrast of selected pixels of the image, the two-dimensional array of additional electrodes independently controllable from the array of pixel electrodes.
A device comprising:
- a liquid crystal display;
- and
- a two-dimensional array of scattering electrodes at the liquid crystal display, the two-dimensional array of scattering electrodes to selectively influence orientation of liquid crystal to control viewing angle of selected pixels of the liquid crystal display, the two-dimensional array of scattering electrodes independently controllable from a pixel array of the liquid crystal display.
Dependencies are inferred from the claim text.