ORGANIC EL DISPLAY PANEL AND METHOD FOR MANUFACTURING THE SAME

To suppress a voltage drop in a counter electrode at a panel center portion and to prevent fluctuations in luminance while employing a line bank system.SOLUTION: An organic EL display panel includes: a plurality of pixel electrodes 13 spaced from one another in an X direction and a Y direction on a...

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Main Authors YADA SHUHEI, NENDAI KENICHI, SHINOKAWA TAIJI, YAMAGUCHI JUN
Format Patent
LanguageEnglish
Japanese
Published 25.07.2019
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
PHYSICS
SEALS
SEMICONDUCTOR DEVICES
SIGNS
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Summary:To suppress a voltage drop in a counter electrode at a panel center portion and to prevent fluctuations in luminance while employing a line bank system.SOLUTION: An organic EL display panel includes: a plurality of pixel electrodes 13 spaced from one another in an X direction and a Y direction on a substrate 11; an electrically insulating partition wall 14 extending in the Y direction between the pixel electrodes 13 adjoining in the X direction; an organic luminescent layer 16 disposed above a pixel electrode array partitioned by the adjoining partition walls 14 and extending in the Y direction; a counter electrode 17 commonly disposed above the organic luminescent layer 16; and an auxiliary electrode 22 formed above the counter electrode 17 via a protective layer 18. The auxiliary electrode 22 includes a pixel upper auxiliary electrode 19 formed above the protective layer 18 and a bank upper auxiliary electrode 20 located above the partition wall 14 and extending in the Y direction. The bank upper auxiliary electrode 20 and the counter electrode 17, and the pixel upper auxiliary electrode 19 and the bank upper auxiliary electrode 20 are electrically connected to each other continuously or connected at a predetermined interval in the Y direction.SELECTED DRAWING: Figure 3 【課題】ラインバンク方式を採用しつつ、対向電極におけるパネル中央部における電圧降下を抑えて、輝度のバラツキを防止する。【解決手段】基板１１上にＸ方向とＹ方向とに間隙をおいて配された複数の画素電極１３と、Ｘ方向に隣接する画素電極１３の間をＹ方向に沿って延伸する電気絶縁性の隔壁１４と、隣接する隔壁１４に仕切られてＹ方向に延在する画素電極列上に配された有機発光層１６と、有機発光層１６上方に共通に配された対向電極１７と、対向電極１７の上方に保護層１８を介して形成された補助電極２２とを備え、補助電極２２は保護層１８の上方に形成された画素上補助電極１９と、隔壁１４の上方に位置してＹ方向に延伸するバンク上補助電極２０とを含み、バンク上補助電極２０と対向電極１７、および画素上補助電極１９とバンク上補助電極２０は、それぞれＹ方向において連続もしくは所定の間隔をおいて電気的に接続される。【選択図】図３
Bibliography:Application Number: JP20180005550