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US 6,617,093 B2Granted
Thermal transfer of a black matrix containing carbon black
Assignee3M Innovative Properties Company
InventorsRichard J. Pokorny, Raghunath Padiyath, Kazuki Noda
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Abstract
A black matrix can be formed by thermal transfer on a receptor substrate for use, for example, in a display application. This black matrix can be used, for example, as a color filter black matrix or a TFT (thin film transistor) black matrix to provide contrast and/or to separate adjacent electrically-conducting components.
Claims20
A thermal transfer element for transferring a black matrix pattern to a receptor, comprising:
- a substrate;
- a light-to-heat conversion layer disposed on the substrate;
- and
- a transfer layer comprising carbon black and having an optical density of at least 3 for white light and a thickness of no more than 1.5 μm, wherein the thermal transfer element is configured and arranged upon transfer of a portion of the transfer layer to a receptor to provide a black matrix pattern having an average resistivity of at least 1×1010 ohm-cm.
1 more element
A thermal transfer element for transferring a pattern to a receptor, comprising:
- a substrate;
- a light-to-heat conversion layer disposed on the substrate;
- a color-changing coating, wherein the color-changing coating changes colors upon exposure to heat;
- and
- a transfer layer configured and arranged for imagewise transfer of a portion of the transfer layer to the receptor.
2 more elements
Dependencies are inferred from the claim text.