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US 7,405,793 B2Granted
Discotic liquid crystal based electronic device using interdigit structure electrode
AssigneeSony Deutschland GmbH
InventorsSilvia Rosselli, Gabriele Nelles, Akio Yasuda
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Abstract
The present invention relates to an electronic device, based on discotic liquid crystalline material, to methods of production of such a device, and to uses thereof.
Claims21
An electronic device, comprising:
- a substrate having a surface,
- an electrode array arranged on the surface of the substrate such that parts of the electrode array are arranged in an interdigitating and/or meandering and/or parallel fashion, further characterized in that the parts of the electrode array are electrode fingers, comprising at least three electrode fingers, and that the average distance between two adjacent electrode fingers is in the range of 3 μm-10 μm,
- at least one layer of at least one discotic liquid crystalline material, the at least one material forming columns, each column having a longitudinal axis, the at least one layer being arranged on the surface of the substrate in a manner such that the longitudinal axes of the columns are parallel to the surface and such that parts of the electrode array are connected to each other through the columns in a conductive manner, the conduction mainly occurring along the longitudinal axes of the columns.
A method of fabricating an electronic device, comprising the steps:
- a) providing a substrate having a surface,
- b) depositing at least one layer of a discotic liquid crystalline material on the surface, the at least one layer of a discotic liquid crystalline material is aligned such that columns of the discotic liquid crystalline material are formed, each column having a longitudinal axis, and such that the longitudinal axes of the columns are parallel to the surface of the substrate,
- c) depositing an electrode array on the surface such that parts of the electrode array are arranged in an interdigitating and/or meandering and/or parallel fashion, the parts of the electrode array being electrode fingers, comprising at least three electrode fingers, and such that parts of the electrode array are connected to each other through the columns in a conductive manner, said conduction mainly occurring along the longitudinal axes of the columns,
- characterized in that steps b) and c) are in reverse order.
1 more element
Dependencies are inferred from the claim text.