Electroluminescent device having connections on the base

Claim 1

AN ELETROLUMINESCENT DEVICE ADAPTED TO EMIT IN DIFFERENT PREDETERMINED COLORS AND COMPRISING: AND ELECTRICALLY INSULATING FOUNDATION; A FIRST CONDUCTING LAYER CARRIED ON A SUBSTANTIAL PORTION OF SAID FOUNDATION; A FIRST CONTACT AREA FORMED BY A PORTION OF SAID FIRST CONDUCTING LAYER PROXIMATE AN EDGE PORTION OF SAID FONDATION; SECOND, THIRD AND FOURTH ELECTRICALLY CONDCTING CONTACT AREAS CARRIED ON PORTIONS OF SAID FONDATION WHICH ARE UNCOATED WITH SAID FIRST CONDUCTING LAYER AND EACH POSITIONED PROXIMATE EDGE PORTIONS OF SAID FONDATION; SAID CONTACT AREAS EACH ELECTRICALLY INSULATED FROM ONE ANOTHER; A FIRST ELECTRICALLY INSULATING LIGHT-TRANSMITTING LAYER COMPRISING POSPHOR WHICH ELECTROLUMINESCES WITH A FIRST PRESELECTED COLOR CARRIED ON A SUBSTANTIAL PORTION OF SAID FIRST CONDUCTING LAYER AND OVERLAPPING ONTO SAID CONTACT AREAS; A SECOND ELECTRICALLY CONDUCTING LAYER WHICH IS LIGHT TRANSMITTING CARRIED ON A SUBSTANTIAL PORTION OF SAID FIRST INSULATING LAYER COMPRISING PHOSPHOR AND ALSO CONNECTING TO A PORTION OF SAID SECOND CONTACT AREA; A SECOND ELECTRICALLY INSULATING LIGHT-TRANSMITTING LAYER COMPRISING PHOSPHOR WHICH ELECTROLUMINESCES WITH A SECOND PREDETERMINED COLOR CARRIED ON SAID SECOND CONDUCTING LAYER AND OVERLAPPING ONTO SAID CONTACT AREAS; A THIRD ELECTRICALLY CONDUCTING LAYER WHICH IS LIGHT TRANSMITTING CARRIED ON A SUBSTANTIAL POSTION OF SAID SECOND INSULATING LAYER COMPRISING PHOSPHOR AND ALSO CONNECTING TO A PORTION OF SAID THIRD CONTACT AREA; A THIRD INSULATING LIGHTTRANSMITTING LAYER COMPRISING PHOSPHOR WHICH ELECTROLUMINESCES WITH A THIRD PRESELECTED COLOR CARRIED ON SAID THIRD CONDUCTING LAYER AND OVERLAPPING ONTO SAID CONTACT AREAS; A FOURTH ELECTRICALLY CONDUCTIN GLAYER CARRIED ON A SUBSTANTIAL PORTION OF SAID THIRD INSULATING LAYER COMPRISING PHOSPHOR AND ALSO CONNECTING TO A PORTION OF SAID FOURTH CONTACT AREA; AT LEAST ONE OF SAID FIRST AND FOURTH ELECTRICALLY CONDUCTING LAYERS COMPRISING A VIEWING FACE FOR SAID DEVICE WITH ALL MATERIAL COMPRISING SUCH VIEWING FACE BEING LIGHT TRANSMITTING; AND ENERGIZING POTENTIALS ADAPTED TO E ELECTRICALLY CONNECTED TO SAID FIRST, SECOND, THIRD AND FOURTH CONTACT AREAS.