INK FOR ORGANIC LIGHT EMITTING DEVICE, ORGANIC LIGHT EMITTING DEVICE MANUFACTURING METHOD, ORGANIC DISPLAY PANEL, ORGANIC DISPLAY APPARATUS, ORGANIC LIGHT EMITTING APPARATUS, INK, FUNCTIONAL LAYER FORMING METHOD, AND ORGANIC LIGHT EMITTING DEVICE

• Main Authors: ISHINO SHINICHIRO, NANNO HIROTAKA, HARADA MITURU, KAWANAMI YUKO, MATSUSUE NORIYUKI, MASUDA TOMOKI
• Format: Patent
• Language: English; Korean
• Published: 02.05.2013
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

An ink for an organic electroluminescent device that is excellent in both the ejectability and the flatness is provided. The ink is the ink 7a for use in an organic electroluminescent device. The ink 7a includes the functional material 7b and the first, second, and third solvents. The functional material 7b constitutes the functional layer 7 of the organic electroluminescent device 111. The first solvent dissolves the functional material 7b. The second solvent has the diester backbone and is equal to or lower than the first solvent in boiling point, or higher than the first solvent in boiling point by a difference of 20°C or less. The third solvent is an aliphatic alcohol and is lower than the first and second solvents in boiling point.