Organic EL display device including display panel
View Patent ↗The present invention aims at the suppression of chromaticity irregularities and brightness irregularities by reflecting a result of an analysis of film forming misalignment of an organic EL layer. For this end, a drive circuit chip 6 is mounted on a lower side of a display panel 4 , and a terminal portion 7 for connection with an external device (a host device) is mounted on an end edge of the lower side of a display panel 4 . Film forming misalignment vectors (indicated by arrows) of sub pixels at an arbitrary point in a display region 5 fall within a first quadrant and an angle made between the vectors falls within 90°.
1. An organic EL display device including a display panel which is formed by arranging pixels constituted of a plurality of organic EL elements on an active substrate in a matrix array, wherein
the organic EL element is provided to the active substrate for every unit color pixel which is constituted of a plurality of sub pixels, and is constituted of one electrode in which a sub pixel opening is formed, an organic EL layer which is formed on one electrode, and a second electrode which is formed on the organic EL layer while covering the organic EL layer, and said sub pixel opening coordinated on a coordinated system, said coordinate system having an origin, a film forming center of an EL layer coordinated relative to said coordinate system,
said sub pixel opening coordinated on a coordinate system, said coordinate system having an origin,
a film forming center of an EL layer coordinated relative to said coordinate system,
angles made between vectors indicative of misalignments of the film forming centers of respective organic EL layers relative to the centers of the sub pixel openings respectively at an arbitrary position on the display panel fall within an angle value of an angle value of 90°,
wherein a measurement of said angle value is measured keeping the center of the sub pixel opening as the origin of the coordinate system of said measurement.
2. An organic EL display device according to claim 1 , wherein lights emitted from the organic EL layers which are formed on the sub pixel openings are constituted of lights of three colors consisting of red, green and blue, and organic EL layers of three colors are formed on the sub pixel openings so as to form the unit color pixel.
3. An organic EL display device according to claim 2 , wherein angles and magnitudes of the vectors of the organic EL layers of three colors differ from each other.
4. An organic EL display device according to claim 1 , wherein the one electrode is a reflection electrode and the second electrode is a transparent electrode.
5. An organic EL display device according to claim 1 , wherein the one electrode is a transparent electrode and the second electrode is a reflection electrode.