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US 8,008,854 B2Granted
Light emitting material and light emitting diode device
AssigneeChunghwa Picture Tubes, Ltd.
InventorsChain-Shu Hsu, Chih-Nan Lo, Chi-Neng Mo, Chien-Lung Tsou, Jan-Tian Lian
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Abstract
A light emitting material includes a polyfluorene derivative having a liquid crystal side group is provided. The polyfluorene derivative has a chemical structure as described in structure 1: wherein Ar is an aromatic ring containing the liquid crystal side group, R1 and R2 are alkanes and n is 20 to 500.
Claims9
A light emitting material, comprising a polyfluorene derivative having a liquid crystal side group, wherein the polyfluorene derivative has a chemical structure of formula 1:
- wherein Ar is an aromatic ring containing the liquid crystal side group, R1 and R2 are alkyls, and n is 20 to 500, wherein the liquid crystal side group is a chain of five benzene rings and the chain of five benzene rings has a chemical structure of formula 2:
A light emitting diode (LED) device, comprising:
- a substrate;
- a first electrode, disposed on the substrate;
- a conductive alignment layer, disposed on the first electrode;
- a light emitting material layer, disposed on the conductive alignment layer, wherein the light emitting material layer comprises a polyfluorene derivative having a liquid crystal side group, and the polyfluorene derivative has a chemical structure of formula 1:
- wherein Ar is an aromatic ring containing the liquid crystal side group, R1 and R2 are alkyls, and n is 20 to 500, wherein the liquid crystal side group is a chain of five benzene rings and the chain of five benzene rings has a chemical structure of formula 2:
- and
- a second electrode, disposed on the light emitting material layer.
4 more elements
Dependencies are inferred from the claim text.