DISPLAY DEVICE

• Main Author: TABATA HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 19.07.2023
• Subjects: ADVERTISING; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; LABELS OR NAME-PLATES; PHYSICS; SEALS; SIGNS

To provide a display device capable of improving display quality.SOLUTION: A display device comprises: a substrate; an insulating layer arranged above the substrate; a lower electrode arranged above the insulating layer; a rib formed of an inorganic material, having an opening that overlaps with the lower electrode, and covering the circumference of the lower electrode; a barrier arranged above the rib; an upper electrode opposed to the lower electrode, being in contact with the barrier; and an organic layer located between the lower electrode and the upper electrode, and emitting light depending on a potential difference between the lower electrode and the upper electrode. The organic layer includes: a first organic layer in contact with the lower electrode via the opening; and a second organic layer located on the barrier and separated from the first organic layer. At least a part of the circumference of the lower electrode is located between the insulating layer and the barrier in a thickness direction of the insulating layer.SELECTED DRAWING: Figure 6 【課題】 表示品位の向上が可能な表示装置を提供する。【解決手段】 一実施形態に係る表示装置は、基板と、前記基板の上方に配置された絶縁層と、前記絶縁層の上方に配置された下電極と、無機材料で形成され、前記下電極と重なる開口を有するとともに、前記下電極の周縁を覆うリブと、前記リブの上方に配置された隔壁と、前記下電極に対向し、前記隔壁に接触する上電極と、前記下電極と前記上電極の間に位置し、前記下電極と前記上電極の電位差に応じて発光する有機層と、を備えている。前記有機層は、前記開口を通じて前記下電極に接触する第１有機層と、前記隔壁の上に位置し前記第１有機層と離間した第２有機層と、を含む。前記下電極の前記周縁の少なくとも一部は、前記絶縁層の厚さ方向において前記絶縁層と前記隔壁の間に位置している。【選択図】 図６