Organic light-emitting display apparatus and method of manufacturing organic light-emitting display apparatus
An organic light-emitting display apparatus includes a substrate, a plurality of organic light-emitting diodes on the substrate, and a plurality of capacitors located next to at least one side of one of the organic light-emitting diodes. The capacitors are arranged inside trenches within the substrate.
1. An organic light-emitting display apparatus, comprising:
a substrate;
a plurality of organic light-emitting diodes (OLEDs) on the substrate;
a plurality of capacitors located next to at least one side of one of the OLEDs, the capacitors being arranged inside trenches within the substrate; and
transistors for each of the plurality of OLEDS, the transistors being on a same surface of the substrate as the OLEDs.
2. The organic light-emitting display apparatus of claim 1 , wherein the capacitors are spaced apart from the OLEDs.
3. The organic light-emitting display apparatus of claim 1 , wherein the capacitors are arranged next to two sides of the one of the OLEDs such that the one of the OLEDs is between the capacitors.
4. The organic light-emitting display apparatus of claim 1 , wherein an active material of the transistors and an electrode of the capacitors is a same material.
5. The organic light-emitting display apparatus of claim 4 , wherein the electrode composed of the active material is a lower electrode of the capacitor and an upper electrode of the capacitor is a pixel electrode is a same material as a pixel electrode of the OLED.
6. The organic light-emitting display apparatus of claim 1 , wherein an insulating layer of the capacitors is a gate insulating layer of the transistors.
7. The organic light-emitting display apparatus of claim 1 , wherein the transistors are adjacent to the OLED and the capacitors on a plane.
8. An organic light-emitting display apparatus, comprising:
a substrate;
a plurality of organic light-emitting diodes (OLEDs) on the substrate; and
a plurality of capacitors located next to at least one side of one of the OLEDs, the capacitors being arranged inside trenches within the substrate, wherein
the capacitors include:
a first capacitor arranged in a first trench in the substrate and separate from a first side of the one of the OLEDs, and
a second capacitor arranged in a second trench in the substrate and separate from a second side of the one of the OLEDs, the second side opposing the first side.
9. The organic light-emitting display apparatus of claim 8 , wherein a length of the first capacitor is longer than a length of the first side of the one of the OLEDs.
10. The organic light-emitting display apparatus of claim 8 , wherein a length of the second capacitor is longer than a length of the second side of the one of the OLEDs.
11. The organic light-emitting display apparatus of claim 8 , further comprising:
at least one transistor including a semiconductor layer, a gate electrode, source and drain electrodes, and a gate insulating layer arranged between the semiconductor layer and the gate electrode,
wherein the one of the OLEDs includes:
a pixel electrode on the gate insulating layer, the pixel electrode being electrically connected to the at least one transistor,
an intermediate layer on the pixel electrode, the intermediate layer including a common layer and an emission layer, and
an opposite electrode that faces the pixel electrode with the intermediate layer disposed therebetween.
12. The organic light-emitting display apparatus of claim 11 , wherein:
the first capacitor includes a first capacitor lower electrode and a first capacitor upper electrode arranged within the first trench, and
the second capacitor includes a second capacitor lower electrode and a second capacitor upper electrode arranged within the second trench.
13. The organic light-emitting display apparatus of claim 12 , wherein the gate insulating layer is interposed between the first capacitor lower electrode and the first capacitor upper electrode, the gate insulating layer also being interposed between the second capacitor lower electrode and the second capacitor upper electrode.
14. The organic light-emitting display apparatus of claim 12 , wherein the first capacitor lower electrode and the second capacitor lower electrode include a same material as the semiconductor layer.
15. The organic light-emitting display apparatus of claim 12 , wherein the first capacitor upper electrode and the second capacitor upper electrode include a same material as the pixel electrode.
16. The organic light-emitting display apparatus of claim 15 , wherein the pixel electrode includes a transparent conductive material.
17. The organic light-emitting display apparatus of claim 11 , wherein:
the common layer includes a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer, and
the hole transport layer, the hole injection layer, the emission layer, the electron transport layer, and the electron injection layer are sequentially stacked on the pixel electrode.
18. The organic light-emitting display apparatus of claim 17 , wherein:
the opposite electrode is on a first capacitor upper electrode of the first capacitor and a second capacitor upper electrode of the second capacitor, and
the hole injection layer, the hole transport layer, the electron transport layer, and the electron injection layer are interposed between the opposite electrode and the first capacitor upper electrode or between the opposite electrode and the second capacitor upper electrode.
19. The organic light-emitting display apparatus of claim 11 , wherein the semiconductor layer includes amorphous silicon or crystalline silicon.
20. The organic light-emitting display apparatus of claim 11 , wherein the opposite electrode is a reflection electrode that reflects light emitted from the emission layer.