Dispersion-type EL device and illuminated switch unit using the same
AssigneePanasonic Corporation
InventorsTamotsu Yamamoto, Masaki Sawada, Koji Tanabe
Life of this patent
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Abstract
A dispersion-type EL device includes a short-bar contact, a first insulating layer, a back electrode layer, a dielectric layer, a luminescent layer, and an optically transparent electrode layer, which are sequentially formed on a temporary substrate that has been processed with an exfoliation treatment. This configuration realizes a reduction in size in a thickness direction. Furthermore, an illuminated switch unit is provided, in which a dispersion-type EL device peeled off from a temporary substrate and a wiring board having a comb-like contact are connected to each other.
Claims7
A dispersion-type EL device, comprising:
- a short-bar contact formed on a surface of a temporary substrate that has been processed with an exfoliation treatment;
- a first insulating layer formed on the short-bar contact;
- a back electrode layer formed on the first insulating layer;
- a dielectric layer formed on the back electrode layer;
- a luminescent layer formed on the dielectric layer;
- and
- an optically transparent electrode layer formed on the luminescent layer.
An illuminated switch unit, comprising:
- a dispersion-type EL device having,
- a short-bar contact formed on a surface of a temporary substrate that has been processed with an exfoliation treatment,
- a first insulating layer formed on the short-bar contact,
- a back electrode layer formed on the first insulating layer,
- a dielectric layer formed on the back electrode layer,
- a luminescent layer formed on the dielectric layer, and
- an optically transparent electrode layer formed on the luminescent layer;
- and
- a wiring board having a comb-like contact and being connected to the dispersion-type EL device so that the comb-like contact faces the short-bar contact,
- wherein the dispersion-type EL device is connected to the wiring board after the dispersion-type EL is peeled off from the temporary substrate.
Dependencies are inferred from the claim text.