Organic electroluminescence unit, method of manufacturing organic electroluminescence unit, and electronic apparatus
A manufacturing method and luminescent technology, which is applied in the manufacture of electrical components, organic semiconductor devices, semiconductor/solid-state devices, etc., can solve the problems of color purity decline, pigment adhesion, color mixing, etc., and achieve the goal of suppressing color mixing and color purity decline Effect
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no. 1 example
[0056] [1-1. Overall structure]
[0057] figure 1 The cross-sectional configuration of the organic electroluminescence unit (display unit 1 ) according to the first embodiment of the present invention is illustrated. The display unit 1 is used, for example, as an organic electroluminescent color display, and has a configuration in which a plurality of red-emitting organic EL devices 2R (first organic EL devices, red pixels), a plurality of red-emitting organic EL devices 2R (first organic EL devices, red pixels), a plurality of red-emitting A green organic EL device 2G (second organic EL device, green pixel) and a plurality of blue-emitting organic EL devices 2B (blue pixel). These organic EL devices 2 ( 2R, 2G and 2B ) are covered with a protective layer 18 and sealed by a sealing substrate 20 with an adhesive layer 19 in between. The display unit 1 is a top emission type display unit in which a combination of organic EL devices 2R, 2G, and 2B adjacent to each other constit...
no. 2 example
[0141] Figure 19 A stacked configuration of the organic EL devices 2R, 2G, and 2B in the display unit 2 according to the second embodiment of the present invention is schematically illustrated. The display unit 2 according to the present embodiment is different from the first embodiment in that the charge transport layer 17 is formed as a layer common to the organic EL devices 2R, 2G, and 2B. It should be noted that, like the first embodiment described above, the organic EL devices 2R, 2G, and 2B are formed on the driving substrate 10 and sealed by the protective layer 18, the adhesive layer 19, and the sealing substrate 20 to constitute a display unit.
[0142] In this embodiment, organic EL devices 2R and 2G also have, for example, a stacked structure in which a hole injection layer 13B, a hole transport layer 13A, a red light emitting layer 14R or a green The light emitting layer 14G, the blue light emitting layer 14B, the electron transport layer 15A, the electron inject...
no. 3 example
[0146] Figure 20 A stacked configuration of the organic EL devices 2R, 2G, and 2B of the display unit 3 according to the third embodiment of the present invention is schematically illustrated. Figures 21A to 21E A coating process for commonly forming two layers, ie, the charge transport layer 17 and the green light emitting layer 14G in this embodiment, is illustrated. The display unit 3 according to the present embodiment differs from the first embodiment described above in that the charge transport layer 17 and the green light emitting layer 14G are commonly formed on the green pixel region 2G1 by coating.
[0147] In the present embodiment, as described above, the charge transport layer 17 and the green light emitting layer 14G are sequentially formed commonly by coating on the portion of the hole transport layer 13A corresponding to the green pixel region. First, the red light emitting layer 2R is formed by coating, and then the blanket 60 is coated with a solution D1g ...
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