Display device having light blocking layer, and electric device
A display apparatus is provided that prevents shortening of the life of the luminescent elements and has a superior contrast ratio. The display apparatus is composed by forming a plurality of luminescent elements on a substrate and providing bank sections between each of the luminescent elements. The bank sections are formed from a first bank layer located on the side of the substrate and a second bank layer formed on the first bank layer. A light blocking layer is then provided between the first bank layer and the second bank layer.
1. A display apparatus comprising:
a substrate;
a plurality of luminescent elements formed on the substrate, each of the luminescent elements comprising a pixel electrode, a functional layer facing the pixel electrode, and a counter electrode; and
bank sections and light blocking layers respectively allocated to the luminescent elements for separating the luminescent elements from each other,
wherein each of the bank sections comprises a first bank layer located on the substrate side, and a second bank layer formed on the first bank layer,
each of the light blocking layers is provided between the first and second bank layers,
the first bank layer, the second bank layer, and the light blocking layer respectively define a first bank layer opening, a second bank layer opening, and a light blocking layer opening, in which the functional layer is formed,
the first bank layer is superimposed on the pixel electrode, and
the second bank layer opening and the light blocking layer opening are wider than the first bank layer opening.
2. A display apparatus according to claim 1 wherein, a light blocking opening is provided in the light blocking layer corresponding to the luminescent elements.
3. A display apparatus according to claim 1 wherein, the light blocking layers are formed from a first light blocking film located at a substrate side, and a second light blocking film located on a side away from the substrate.
4. A display apparatus according to claim 3 wherein, the first light blocking film is a metallic chromium film, and the second light blocking film is chromium oxide.
5. A display apparatus according to claim 1 wherein, the first bank layer is comprised of either SiO 2 or TiO 2 .
6. A display apparatus according to claim wherein, the second bank layer is comprised of either acrylic resin or polyimide resin.
7. A display apparatus according to claim 1 wherein, at least a portion of the first bank layer is processed to have lyophilicity.
8. An electric device having a display apparatus and a drive circuit for driving the display apparatus wherein,
the display apparatus comprises:
a substrate;
a plurality of luminescent elements formed on the substrate, each of the luminescent elements comprising a pixel electrode, a functional layer facing the pixel electrode, and a counter electrode; and
bank sections and light blocking layers respectively allocated to the luminescent elements for separating the luminescent elements from each other,
wherein each of the bank sections comprises a first bank layer located on the substrate side, and a second bank layer formed on the first bank layer,
each of the light blocking layers is provided between the first and second bank layers,
the first bank layer, the second bank layer, and the light blocking layer respectively define a first bank layer opening, a second bank layer opening, and a light blocking layer opening, in which the functional layer is formed,
the first bank layer is superimposed on the pixel electrode, and
the second bank layer opening and the light blocking layer opening are wider than the first bank layer opening.