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EP0004655A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Application of fluorescent dyes for light intensification

Assignee: Hoechst AG
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Filing: 1979-03-31
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Granted: —
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Expires: 1999-03-31
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Abstract

Abstract Translated from German Fluoreszierende Farbstoffe der Benzoxanthen- und Benzothioxanthen-Reihe, bei denen das Verhältnis der Absorptionsbandbreite zur Emissionsbandbreite groß ist und die eine gute Trennung von Absorptions- und Fluoreszenzemissionsbanden aufweisen, eignen sich zur fluoreszenzaktivierten Helligkeitsverstärkung, insbesondere für Flüssigkristallanzeigen. Fluorescent dyes of the benzoxanthene and benzothioxanthene series, in which the ratio of the absorption bandwidth to the emission bandwidth is large and which have a good separation of absorption and fluorescence emission bands, are suitable for fluorescence-activated brightness enhancement, especially for liquid crystal displays.

Inventors

  • 👤 Hans Prof. Dr. Kelker
  • 👤 Helmut Dr. Tröster
  • 👤 Günter Dr. Baur

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 23:23
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C09; C09K; C09K11/00; C09K11/06

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