Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1988-06-24
1990-06-05
Schreyer, Stafford D.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
178 18, G08C 2100, G09G 302
Patent
active
049317822
ABSTRACT:
A touch screen overlay for use on the viewing surface of a visual display device formed from a flexible membrane laminate having improved conductor durability. The flexible laminate comprises first and second flexible substrates formed of transparent polyester material. An array of parallel transparent conductors is deposited on a surface of each flexible substrate. The two flexible substrates are joined together by an adhesive sheet of polyester material. The substrates are joined so that transparent conductors are deposited on the surface of each flexible substrate which faces away from the viewing surface when the overlay is attached to the visual display device. The two arrays, when so superimposed, form a grid-like pattern, separated by the thickness of the upper one of the flexible substrates and the adhesive sheet. A third flexible substrate also formed of polyester material covers the surface of the upper one of the other flexible substrates carrying the upper array of parallel conductors. The second and third flexible substrates are also joined by an adhesive sheet of polyester material. When the overlay is contacted either by finger touch or by a stylus, the transparent conductors located in the laminated below the contact area will subjected substantially only to compression forces.
REFERENCES:
patent: 4423299 (1983-12-01), Gurol et al.
patent: 4567480 (1986-01-01), Blanchard
patent: 4571454 (1986-02-01), Tamaru et al.
patent: 4686332 (1987-08-01), Greanias et al.
patent: 4696860 (1987-09-01), Epperson
E. I. Du Pont de Nemours and Company
Schreyer Stafford D.
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