DISPLAY DEVICE

• Main Authors: BYEON HEESU, JOUNG SEUNG RYONG, WON JEONGEUN, HAN YOONDEOK
• Format: Patent
• Language: English; Japanese
• Published: 18.10.2023
• Subjects: ADVERTISING; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; ELECTRICITY; LABELS OR NAME-PLATES; PHYSICS; SEALS; SIGNS

To provide a higher luminance display device.SOLUTION: A display device comprises: a substrate containing first to third sub-pixels; a reflection electrode disposed to each of the first to third sub-pixels; a first electrode that is located on the reflection electrode, and is formed separately at each of the first to third sub-pixels; a first light emission part provided on the first electrode and containing any one of red, green, and blue light emission layers; a second light emission part provided on the first light emission part and containing a light emission layer different from the first light emission part; a third light emission part provided on the second light emission part and containing a light emission layer different from the first and second light emission parts; and a second electrode provided on the third light emission part. A blue light emission layer of any one of the first to third light emission parts is closer to the first electrode than a red light emission layer of any one of the first to third light emission parts. A light emission layer with a distance between the first electrode and the second electrode of 310 nm and in the third light emission part is the red light emission layer, or a light emission layer with a distance between the first electrode and the second electrode of 385 nm, and in the third light emission part is the red light emission layer, or a light emission layer with a distance between the first electrode and the second electrode of 450 nm, and in the third light emission part is a green light emission layer.SELECTED DRAWING: Figure 1 【課題】表示装置を高輝度化させる。【解決手段】表示装置は、第１～第３サブ画素を含む基板と、第１～第３サブ画素の夫々に配置された反射電極と、反射電極上にあり第１～第３サブ画素毎に分離して形成された第１電極と、第１電極の上にあり赤、緑、青の発光層の何れかを含む第１発光部と、第１発光部上にあり第１発光部とは異なる発光層を含む第２発光部と、第２発光部上にあり第１、第２発光部とは異なる発光層を含む第３発光部と、第３発光部上にある第２電極を含み、第１～第３発光部の何れかの青色発光層は第１～第３発光部の何れかの赤色発光層よりも第１電極に近く、第１電極～第２電極間の距離は３１０ｎｍであり第３発光部にある発光層は赤色発光層であり、又は第１電極～第２電極間の距離は３８５ｎｍであり第３発光部にある発光層は赤色発光層であり、又は第１電極～第２電極間の距離は４５０ｎｍであり第３発光部にある発光層は緑色発光層である。【選択図】図１