Coating processes – Electrical product produced – Fluorescent or phosphorescent base coating
Reexamination Certificate
2007-04-17
2007-04-17
Meeks, Timothy (Department: 1762)
Coating processes
Electrical product produced
Fluorescent or phosphorescent base coating
C438S030000, C438S099000, C428S690000
Reexamination Certificate
active
10636748
ABSTRACT:
To provide an inexpensive EL display device of high definition. An anode, a light emitting layer, and a cathode are formed on a substrate, and selective doping using at least one selected from the group consisting of an alkali metal element, an alkaline earth metal element and a halogen element is then performed to form at least ones of electron transmitting regions and hole transmitting regions. In such a structure, only a part of the light emitting layer, where at least ones of the electron transmitting regions and the hole transmitting regions are formed, emits light when a given voltage is applied to the light emitting layer, whereby images are displayed as desired.
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Mizukami Mayumi
Tsutsui Tetsuo
Yamazaki Shunpei
Meeks Timothy
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Turocy David
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