Organic thin film transistor and method of manufacturing the organic thin film transistor, and display apparatus using the same
Provided are an organic semiconductor structure and a method of manufacturing the same, an organic thin film transistor (OTFT) using the organic semiconductor structure and a method of manufacturing the OTFT, and a display apparatus using the same. The OTFT includes: an oxide layer formed on a base substrate; a source electrode on the oxide layer, wherein the source electrode includes a first source electrode portion and a second source electrode portion; a drain electrode on the oxide layer, wherein the drain electrode includes a first drain electrode portion and a second drain electrode portion; an organic layer pattern having an opening that exposes the first source electrode portion and the first drain electrode portion; an organic semiconductor pattern electrically connected to the first source electrode portion and the first drain electrode portion through the opening, wherein the organic semiconductor pattern has a conductive or an insulating property depending on an applied electric field in a location; a gate insulating layer covering the organic semiconductor pattern; and a gate electrode formed on the gate insulating layer corresponding to the organic semiconductor pattern.
1. An OTFT (organic thin film transistor) comprising:
an oxide layer formed on a base substrate;
a source electrode on the oxide layer, wherein the source electrode includes a first source electrode portion and a second source electrode portion;
a drain electrode on the oxide layer, wherein the drain electrode includes a first drain electrode portion and a second drain electrode portion;
an organic layer pattern having an opening that exposes the first source electrode portion and the first drain electrode portion;
an organic semiconductor pattern electrically connected to the first source electrode portion and the first drain electrode portion through the opening, wherein the organic semiconductor pattern has a conductive or an insulating property depending on an applied electric field in a location;
a gate insulating layer covering the organic semiconductor pattern; and
a gate electrode formed on the gate insulating layer corresponding to the organic semiconductor pattern.
2. The OTFT according to claim 1 , wherein the organic layer pattern has a hydrophilic property.
3. The OTFT according to claim 2 , wherein the organic layer pattern includes a photosensitive substance.
4. The OTFT according to claim 2 , wherein the organic layer pattern includes an acryl based synthetic resin.
5. The OTFT according to claim 1 , wherein the organic layer pattern has an island shape.
6. The OTFT according to claim 1 , wherein the organic semiconductor pattern has a hydrophilic property.
7. The OTFT according to claim 1 , wherein the oxide layer further comprises a hydrophilic portion having the hydrophilic property disposed between the source electrode and the drain electrode.
8. The OTFT according to claim 1 , the second source electrode portion and the second drain electrode have a hydrophilic property.
9. A display device comprising:
a first display substrate including;
an oxide layer formed on a first base substrate;
a source electrode on the oxide layer, wherein the source electrode includes a first source electrode portion and a second source electrode portion;
a drain electrode on the oxide layer, wherein the drain electrode includes a first drain electrode portion and a second drain electrode portion;
an organic layer pattern having an opening that exposes the first source electrode portion and the first drain electrode portion;
an organic semiconductor pattern electrically connected to the first source electrode portion and the first drain electrode portion through the opening, wherein the organic semiconductor pattern has a conductive or an insulating property depending on an applied electric field;
a gate insulating layer covering the organic semiconductor pattern; and
a gate electrode formed on the gate insulating layer in a location corresponding to the organic semiconductor pattern;
a second display substrate formed on a second base substrate that is opposite to the first base substrate, wherein the second display substrate includes a color filter formed on a predetermined portion of the second base substrate corresponding to the pixel electrode; and
a liquid crystal layer interposed between the first and second display substrates.
10. The device according to claim 9 , wherein the organic semiconductor pattern has an island shape.
11. An OTFT (organic thin film transistor), comprising:
an oxide layer formed on the base substrate;
a source electrode formed on the oxide layer;
a drain electrode on the oxide layer, wherein the drain electrode is spaced apart from the source electrode;
an organic layer pattern having an opening that exposes a portion of the source electrode and the drain electrode;
an organic semiconductor pattern contacting both the source electrode and the drain electrode through the opening, wherein the organic semiconductor pattern has a conductive or an insulating property depending on an applied electric field;
a gate insulation layer covering the organic semiconductor pattern; and
a gate electrode formed on the gate insulating layer at a location corresponding to the organic semiconductor pattern.
12. The device according to claim 11 , wherein the organic layer pattern has a hydrophobic property.
13. The device according to claim 11 , wherein the organic semiconductor pattern has a hydrophilic property.