Organic light emitting diode and method of manufacturing
Aspects of the present disclosure provide for manufacturing an organic light emitting diode (OLED) by forming two terminals of the OLED on two substrates of the display, and then depositing a plurality of layers of the OLED on one or both of the two terminals to form a first portion and a second portion of the OLED on each substrate. The two portions are joined together to form an assembled OLED. The deposition of the two portions can be stopped with each portion having approximately half of a common layer exposed. The two portions can then be aligned to be joined together and an annealing process can be employed to join together the two parts of the common layer and thereby form the OLED.
1. A method of manufacturing an organic light emitting diode having a first terminal, a second terminal, and a plurality of layers between the first terminal and the second terminal, the method comprising:
forming, on a first substrate, the first terminal of the organic light emitting diode;
forming, on a second substrate, the second terminal of the organic light emitting diode;
developing a first portion of the plurality of layers on the first terminal;
developing a second portion of the plurality of layers on the second terminal;
joining the first portion of the plurality of layers to the second portion of the plurality of layers such that the plurality of layers is situated in between the first terminal and the second terminal,
wherein the plurality of layers includes a common layer having a first part included in the first portion of the plurality of layers, the common layer having a second part included in the second portion of the plurality of layers, and wherein:
the developing the first portion of the plurality of layers includes depositing the first part of the common layer,
the developing the second portion of the plurality of layers includes depositing the second part of the common layer,
the joining is carried out by annealing the first part and the second part of the common layer,
the common layer is an electron transfer layer.
2. A method of manufacturing an organic light emitting diode having a first terminal, a second terminal, and a plurality of layers between the first terminal and the second terminal, the method comprising:
forming, on a first substrate, the first terminal of the organic light emitting diode;
forming, on a second substrate, the second terminal of the organic light emitting diode;
developing a first portion of the plurality of layers on the first terminal;
developing a second portion of the plurality of layers on the second terminal;
joining the first portion of the plurality of layers to the second portion of the plurality of layers such that the plurality of layers is situated in between the first terminal and the second terminal,
prior to the joining, placing a first spacer on the first portion of the plurality of layers and a second spacer on the second portion of the plurality of layers, and wherein
during the joining, the first spacer abuts the second spacer so as to prevent the plurality of layers from being compressed.
3. A method of manufacturing an organic light emitting diode having a first terminal, a second terminal, and a plurality of layers between the first terminal and the second terminal, the method comprising:
forming, on a first substrate, the first terminal of the organic light emitting diode;
forming, on a second substrate, the second terminal of the organic light emitting diode;
developing a first portion of the plurality of layers on the first terminal; and
developing a second portion of the plurality of layers on the second terminal;
joining the first portion of the plurality of layers to the second portion of the plurality of layers such that the plurality of layers is situated in between the first terminal and the second terminal,
wherein the developing the first portion of the plurality of layers or the developing the second portion of the plurality of layers includes placing a bank at a periphery of a hole transfer layer so as to prevent the hole transfer layer from abutting an electron transfer layer.