Multilayer with spacers, touch screen and method
AssigneeEastman Kodak Company
InventorsCharles C. Anderson, Ronald S. Cok, Rodney D. Feldman
Life of this patent
Estimating the term…
Abstract
Disclosed is a transparent multilayer comprising a first conductive layer containing an intrinsically conductive polymer, a film forming binder, and spacer elements embedded in and projecting from the surface of the first conductive layer, and a second conductive layer separated from the first conductive layer by the spacer elements. The multilayer is useful as a component in a touch screen display.
Claims41
A transparent multilayer comprising a first conductive layer containing an intrinsically conductive polymer, a film forming binder, and spacer elements embedded in and projecting from the surface of the first conductive layer, and a second conductive layer separated from the first conductive layer by the spacer elements.
A touch screen, comprising;
- a) a flexible transparent cover sheet bearing a first conductive layer;
- b) a transparent substrate bearing a second conductive layer and located relative to the transparent substrate so that the first and second conductive layers face each other;
- and
- c) spacer elements extending between the conductive layers to prevent contact in the absence of external deformation;
- wherein at least one of the first or second conductive layers comprises an intrinsically conductive polymer,a film forming binder, and spacer elements embedded in and projecting from the surface of the layer.
A method of making a touch screen display component of the type including a transparent substrate having a conductive layer, a flexible transparent cover sheet bearing a conductive layer, and spacer elements extending between the substrate and the cover sheet, comprising the steps of:
- a) providing a liquid coating medium containing an intrinsically conductive polymer, a film forming binder and spacer elements;
- b) coating the liquid coating medium on the substrate or the cover sheet and drying to form at least one of the conductive layers,
- c) providing the other conductive layer on the other of the substrate or the cover sheet, and
- d) joining the substrate and cover sheet with their conductive layers facing each other and the spacer elements extending there-between.
Dependencies are inferred from the claim text.