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US 7,612,859 B2Granted
Ultra-violet radiation absorbing grid
AssigneeHewlett-Packard Development Company, L.P.
InventorsBenjamin L. Clark, Sadiq S. Bengali
Life of this patent
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Abstract
Various embodiments and methods relating to an ultra-violet radiation absorbing grid for attenuating transmission of near UV-light are disclosed.
Claims31
A display comprising:
- a grid forming wells, the grid being configured to absorb ultra-violet radiation, wherein each well has a depth of less than or equal to about 20 μm, wherein the wells have a top edge and wherein the display further comprises at least one trough next to the wells, the at least one trough including a pair of substantially parallel opposing continuous walls extending next to a pair of consecutive wells and a floor partially provided by the top edge;
- and
- a charge responsive optical material within each of the wells.
An apparatus comprising:
- a substrate;
- and
- a grid disposed on the substrate, the grid formed from a polymeric compound having one or more ultra-violet absorbing materials disposed therein, wherein the polymeric compound includes an epoxidized bisphenol-A/formaldehyde novolac copolymer combined with a photo acid generator, wherein the grid includes a plurality of wells having a top edge and wherein the apparatus further comprises:
- a charge responsive optical material within each of the wells;
- and
- at least one trough having opposing continuous walls next to the top edge of the wells and extending beyond the top edge, wherein the sides of the walls are next to interiors of the wells.
3 more elements
A method comprising:
- forming a grid of a polymeric compound having one or more ultra-violet absorbing materials disposed therein, the grid having wells with a top edge;
- forming troughs upon the grid, the troughs including a pair of substantially parallel opposing continuous walls extending next to a pair of consecutive wells;
- and
- a floor at least partially formed by the top edge of the wells;
- and
- at least partially filling cells of the grid with a charge responsive optical material.
3 more elements
A method comprising:
- emitting near ultra-violet radiation;
- selectively attenuating the near ultra-violet radiation with a charge responsive optical material in wells of a grid having a height of less than or equal to about 20 μm and formed from a polymeric compound having one or more near ultra-violet radiation absorbing materials disposed therein, wherein consecutive wells are next to and bordered on opposite sides by opposite continuous walls of a trough having a floor at least partially formed by a top edge of the wells.
A display comprising:
- a grid forming wells having a top edge , the grid being configured to absorb ultra-violet radiation, wherein the grid is at least partially formed from a polymeric composition including an ultraviolet radiation absorbing material;
- at least one trough having opposing continuous walls next to the top edge of the wells and extending beyond the top edge;
- and
- a charge responsive optical material within each of the wells, wherein the sides of the walls are next to interiors of the wells.
1 more element
Dependencies are inferred from the claim text.