The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 1994
Filed:
Aug. 20, 1991
Sharlyn R Stocker, Mesa, AZ (US);
Ralph McGuigan, Tempe, AZ (US);
Rodney T Eckersley, Tempe, AZ (US);
Will M Hooke, Phoenix, AZ (US);
Durel Corporation, Tempe, AZ (US);
Abstract
An electroluminescent sheet-form lamp comprising a transparent insulation layer, a transparent first conductive layer below the insulation layer forming a first electrode, a layer of phosphor material below the first conductive layer, a layer of dielectric material below the phosphor layer, a second conductive layer below the dielectric layer forming a second electrode, and electrical connection means for applying an electrical potential between the conductive layers to cause the phosphor to transmit light through the transparent conductive layer and the transparent insulation layer, one of the conductive layers having been formed as a general conductive coating preapplied over a panel of larger dimension than the lamp, from which the lamp has been cut. The lamp provides an improved electrical connection, wherein the one conductive layer has a line of interruption which isolates a localized region of the one conductive layer from electrical continuity with a main portion of the one conductive layer, the main portion of the one conductive layer forming the respective electrode and being connected to one of the connection means to apply electrical potential thereto without applying electrical potential to the localized region, the connection means for the other of the conductive layers which forms the other of the electrodes being located in coincidence with the area of the localized region, one of the connection means employing deformation of the sheet-form lamp, whereby the electrical isolation of the localized region prevents electrical shorting between the conductive layers as a result of the deformation.