Method of making a curved electrode plate

• US 4,205,418 A
• Filed: 07/28/1978
• Issued: 06/03/1980
• Est. Priority Date: 07/28/1978
• Status: Expired due to Term

• Current Assignee: Unisys Corporation
• Original Assignee: Burroughs Corp (Unisys Corporation)
• Inventors: Przybylek, George J.
• Primary Examiner(s): McQuade, John
• Application Number:
  US05/928,960
• Time in Patent Office: 676 Days
• Field of Search: 29/25.18, 29/630 C
• US Class Current: 445/52
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: Y10T 29/49204 Contact or terminal manufacturing

Abstract

The disclosure is of a cathode ray tube having a face plate for displaying information and carrying an electrode assembly which is curved to couple intimately to the face plate. The electrode assembly includes a shield against radio frequency interference and an insulating support sheet having an inner surface and an outer surface, on each of which an array of rows and columns of conductive areas is formed. On the inner surface, the rows of conductive areas are electrically connected together to output contact pads at a side edge of the sheet, and, on the outer surface, the columns of conductive areas are electrically connected together to output contact pads along the lower edge of the sheet. Each outer conductive area overlies and is capacitively coupled to an inner conductive area. A column conductor which extends from a contact pad at an edge of the outer surface of the sheet is capacitively coupled to each column of outer conductive areas. The method of the invention comprises forming the desired conductive areas of indium-tin-oxide on a flat glass sheet and then sagging the glass sheet to the desired curvature.

Claims

1. The method of making a touch sensitive display panel comprising

providing a flat glass plate having top and bottom surfaces,

forming electrodes of indium-tin-oxide on one of said surfaces,

molding said plate to a desired curvature, and

coupling the curved plate to a support member.

2. The method of making a touch sensitive display panel comprising

providing a flat glass plate having top and bottom surfaces,

forming electrodes of indium-tin-oxide on one of said surfaces,

heating said plate on a mold to form said plate to a desired curvature, and

coupling the curved plate to a support member.

3. The method of making a touch-sensitive display panel comprising

providing a flat glass plate having top and bottom surfaces,

providing a layer of indium-tin-oxide on each of said surfaces,

screening a layer of etchant-resistant material in a pattern on said layers of indium-tin-oxide so that portions of said layers are coated with said material and some portions are not,

etching and removing the uncoated portions of said layers to leave patterns of indium-tin-oxide electrodes on said surfaces,

molding said plate to a desired curvature, and

coupling the curved plate to a support member.

4. The method of making a curved electrode assembly comprising providing a flat glass plate having top and bottom surfaces, forming electrodes of indium-tin-oxide on one of said surfaces, and molding said plate to a desired curvature.