Display apparatus, electric device, and manufacturing method of display apparatus
View Patent ↗The present invention provides a display apparatus in which there is no shorting between the electrodes and cathode, and there is little variation in the amount of emitted light within a single luminescent layer. A display apparatus is employed in which first and second bank layers are extended to the peripheral edge section of electrodes, the first bank layer is extended farther towards the center of electrodes than the second bank layer, a first laminated section is formed on the first bank layer, an opening is provided in the bank sections, functional layers are composed of a positive hole injection/transport layer and a luminescent layer, and the positive hole injection/transport layer is composed of a flat section formed on the electrodes and a peripheral edge section formed on the first laminated section of the first bank layer.
1. A display apparatus, comprising:
functional layers formed on each of a plurality of electrodes formed on a substrate; and
bank sections provided between each of said functional layers,
said bank sections being formed from a first bank layer located on said substrate side, and a second bank layer formed on said first bank layer, said first bank layer being arranged so as to overlap a portion of said electrodes,
said functional layers comprising a positive hole injection/transport layer and a luminescent layer formed adjacent to said positive hole injection/transport layer,
said positive hole injection/transport layer being provided with a flat section formed on said electrode, and a peripheral edge section formed on said first bank layer so as to contact said second bank layer, and
the peripheral edge section not being continuous with the flat section.
2. The display apparatus according to claim 1 , said peripheral edge section having a shape in which a thickness increases along a direction moving away from a center of said electrode.
3. The display apparatus according to claim 1 , a surface of said electrodes and a portion of said first bank layer having lyophilic properties, and an upper surface of said second bank layer and a wall surface of said second bank layer having liquid repellency.
4. The display apparatus according to claim 1 , said first bank layer being formed from at least one of SiO2 and TiO2.
5. The display apparatus according to claim 1 , said second bank layer being comprising at least one of acrylic resin and polyimide resin.
6. An electric device, comprising:
a display apparatus; and
a drive circuit that drives said display apparatus,
said display apparatus having functional layers formed on each of a plurality of electrodes formed on a substrate, and being provided with bank sections between each of said functional layers,
said bank sections being formed from a first bank layer located on said substrate side, and a second bank layer formed on said first bank layer, said first bank layer being arranged so as to overlap a portion of said electrodes,
said functional layers comprising a positive hole injection/transport layer formed on said electrodes and a luminescent layer formed on said positive hole injection/transport layer,
said positive hole injection/transport layer having a flat section formed on said electrodes, and a peripheral edge section formed on said first bank layer so as to contact said second bank layer, and
the peripheral edge section not being continuous with the flat section.