Touch-sensitive illuminating display
AssigneeHewlett-Packard Development Company, L.P.
InventorsJarrid WITTKOPF, Robert IONESCU, Ning GE, Helen A HOLDER
Life of this patent
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Abstract
In an example implementation, a touch-sensitive illuminating display includes a transparent flexible touch layer, a transparent top conductive layer adjacent the flexible touch layer, a bottom conductive layer, and an electroluminescent layer and variable-thickness dielectric layer sandwiched between the top and bottom conductive layers. Pressure against the flexible touch layer is to reduce the dielectric layer thickness and bring the top and bottom conductive layers closer together, causing the electroluminescent layer to emit light where the pressure is applied.
Claims15
A touch-sensitive illuminating display comprising:
- a transparent flexible touch layer;
- a transparent top conductive layer adjacent the flexible touch layer;
- a bottom conductive layer;
- and,
- an electroluminescent layer and a variable-thickness dielectric layer sandwiched between the top and bottom conductive layers;
- wherein pressure against the flexible touch layer is to reduce the dielectric layer thickness and bring the top and bottom conductive layers closer together, causing the electroluminescent layer to emit light where the pressure is applied.
A touch-sensitive illuminating display comprising:
- an electroluminescent layer between a top conductive layer and a bottom conductive layer;
- a current source to provide current through the top and bottom conductive layers to generate an electric field;
- a transparent flexible touch layer to receive contact pressure;
- and,
- a compressible touch-sensitive dielectric layer adjacent to the electroluminescent layer to increase the electric field strength in response to the contact pressure and to cause the electroluminescent layer to emit light in areas of the increased electric field strength where the contact pressure is applied.
A method of forming a touch-sensitive illuminating display comprising:
- applying a lower conductive layer onto a substrate;
- applying an electroluminescent layer over the lower conductive layer;
- applying a touch-sensitive dielectric layer over the electroluminescent layer;
- applying an upper conductive layer over the touch-sensitive dielectric layer;
- and,
- applying a flexible touch-sensitive layer over the upper conductive layer.
Dependencies are inferred from the claim text.