To solve a problem that there is a tendency that a layer thickness distribution at each pixel becomes uneven when an organic functioning layer is formed by a liquid drop discharge method, and in this case, it is difficult to maintain even luminous intensity in each pixel, and display quality is deteriorated by unevenness of the luminous intensity in the inside of a unit pixel.
An interlayer insulating layer 202 with a recessed shape is arranged at the center of an effective light-emitting range 211, and an organic functioning layer 208 emitting light at a peak wavelength of 576 nm is arranged. The organic functioning layer 208 is formed to be thick (120 nm) at the center, and thin (100 nm) at a peripheral section. Electric resistance is reduced and current is concentrated and absolute light intensity becomes high, at the peripheral section where the organic functioning layer 208 is thin. The interlayer insulating layer 202 becomes thick at the peripheral section, and an emission wavelength is shifted to a long wavelength side since an effective optical path length becomes long. Visual sensitivity of a human being is reduced at a long wavelength side of ≥555 nm. The absolute light intensity is compensated with visual sensitivity characteristics, since the emission wavelength becomes longer at a range where the absolute light intensity is high.
COPYRIGHT: (C)2009,JPO&INPIT
| JP2018120733 | DISPLAY DEVICE |
| JPH0982476 | ORGANIC ELECTROLUMINESCENT ELEMENT |
| WO/2021/172371 | FLUORINE-CONTAINING POLYMER, RESIN FILM, AND OPTO-ELECTRONIC ELEMENT |
Hideyuki Kimura
| JP2005062400A |
| WO2005107327A1 |
Osamu Suzawa
Kazuhiko Miyasaka