| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition for a hole injection transporting layer, whereby a material and an element can be most properly designed, and a film can inexpensively accurately be formed by patterning in a short time. SOLUTION: This composition for the hole injection transporting layer is a composition used to form the hole injection transporting layer of an EL element by patterning by using an ink jet type recording head, and contains a conductive compound and a solvent which are components of the hole injection transporting layer. Its contact angle to a material forming the ink discharging nozzle face of the ink jet type recording head is in the range of 30°to 70°, its viscosity is in the range of 1 cp to 20 cp, and its surface tension is in the range of 20 dyne to 70 dyne. Because of such physical properties, materials and elements can be most properly designed, and the film can accurately, simply and inexpensively be formed by patterning in a short time by using this composition for the hole injection transporting layer. COPYRIGHT: (C)2004,JPO
|
