DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: FURUTA MARIKO, SHIMOYAMA DAISUKE, UKIGAYA NOBUTAKA
• Format: Patent
• Language: English; Japanese
• Published: 14.06.2018
• Subjects: ADVERTISING; BASIC ELECTRIC ELEMENTS; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; LABELS OR NAME-PLATES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SEALS; SEMICONDUCTOR DEVICES; SIGNS

PROBLEM TO BE SOLVED: To provide a technique for suppressing the leak of light between adjacent light-emitting elements in a display device.SOLUTION: A display device comprises: a substrate; a plurality of light-emitting elements arranged on the substrate; and a protection layer for protecting the plurality of light-emitting elements. The plurality of light-emitting elements include a plurality of lower electrodes separated from each other by an insulating part, an organic layer including a light-emitting layer arranged on the plurality of lower electrodes, and an upper electrode arranged so as to cover the organic layer. The insulating part includes a first portion arranged on each lower electrode, and a second part arranged between the lower electrodes. The protection layer is arranged so as to cover the upper electrode. The protection layer is provided with a separation part having a refraction index different from that of the protection layer over the second portion. The height of a top face of a portion of the upper electrode disposed under the separation part with respect to a surface of the substrate is lower than the height of a top face of a portion of the upper electrode disposed over the first portion.SELECTED DRAWING: Figure 1 【課題】表示装置において、隣接する発光素子間での光漏れを抑制する技術を提供する。【解決手段】基板と基板の上に配される複数の発光素子と複数の発光素子を保護するための保護層とを含む表示装置であって、複数の発光素子は、互いに絶縁部によって分離された複数の下部電極と複数の下部電極の上に配された発光層を含む有機層と有機層を覆うように配された上部電極とを含み、絶縁部は、複数の下部電極のそれぞれの上に配された第１の部分と複数の下部電極のそれぞれの間に配された第２の部分とを含み、保護層は、上部電極を覆うように配され、保護層には、第２の部分の上に保護層とは異なる屈折率を有する分離部が設けられ、基板の表面を基準として、上部電極のうち分離部の下に配される部分の上面の高さが、上部電極のうち第１の部分の上に配される部分の上面の高さよりも低い。【選択図】図１