摘要:
The surface of a base pigment is modified so as to have a specific functional group such as sulfonic acid or its derivative, in order to increase rheological and colouristic properties and flocculation stability of dioxazine pigments (e.g., Pigment Violet 23). By modifying a pigment surface and further kneading it, dispersibility and the efficiency (brightness) of a color filter are improved without any other adverse effects.
摘要:
The present invention pertains to a method of preparing a component layer for organic light emitting diodes involving milling a composition comprising: at least one component material selected from the group consisting of hole transporting materials, electron transporting materials, hole injection materials, electron injection materials, and emitting materials; a solvent; and a binder. It has been found that, when milling is used for the preparation of a dispersion or suspension, the surface quality of the resultant component layer can be improved, thereby significantly improving the performance of the organic light emitting device. The present invention also provides organic light emitting devices including the component layer prepared by the above preparation method.