Apparatus for and method for aligning dipoles and method of fabricating display device

Patent metadata

Field	Value
Publication number	US-11728196-B2
Application number	US-202117191018-A
Country	US
Kind code	B2
Filing date	Mar 3, 2021
Priority date	Jul 1, 2020
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

An apparatus for aligning dipoles is provided. The apparatus includes: an electric field forming unit including a stage and a probe unit, the probe unit being configured to form an electric field on the stage; an inkjet printing device including an inkjet head, the inkjet head being configured to spray ink including a solvent and dipoles dispersed in the solvent onto the stage; a light irradiation device configured to irradiate light onto the stage; and a temperature control device including a temperature control unit, the temperature control unit being configured to control a temperature of the solvent sprayed on the stage.

First claim

What is claimed is:

1. An apparatus for aligning dipoles, the apparatus comprising:
an electric field forming unit comprising a stage and a probe unit, the probe unit being configured to form an electric field on the stage;
an inkjet printing device comprising an inkjet head, the inkjet head being configured to spray ink comprising a solvent and dipoles dispersed in the solvent onto the stage;
a light irradiation device configured to irradiate light onto the stage; and
a temperature control device comprising a temperature control unit, the temperature control unit being configured to control a temperature of the solvent sprayed on the stage.

2. The apparatus of claim 1 , wherein the temperature control unit is configured to control the temperature of the solvent by controlling a temperature of a substrate on the stage.

3. The apparatus of claim 2 , wherein the temperature control unit comprising a heater to heat the substrate.

4. The apparatus of claim 3 , wherein the temperature control unit further comprising a cooler to cool the substrate.

5. The apparatus of claim 3 , wherein the temperature control device further comprising a temperature sensor to detect the temperature of the substrate.

6. The apparatus of claim 2 , wherein:
the light irradiation device irradiates the light onto the stage after the spraying of the ink onto the stage, and
the temperature control unit controls the temperature of the substrate while the light is being irradiated onto the stage.

7. The apparatus of claim 6 , wherein the electric field forming unit forms the electric field on the stage while the light is being irradiated onto the stage.

8. The apparatus of claim 1 , wherein the temperature control unit is below the stage and controls the temperature of the solvent by controlling a temperature of the stage.

9. An apparatus for aligning dipoles, the apparatus having a printing part, a heat treatment part, and a transfer part between the printing part and the heat treatment part, the apparatus comprising:
an electric field forming unit comprising a stage and a probe unit, the probe unit being configured to form an electric field on the stage;
an inkjet printing device in the printing part and comprising an inkjet head, the inkjet head being configured to spray ink comprising a solvent and dipoles dispersed in the solvent onto the stage;
a light irradiation device configured to irradiate light onto the stage;
a temperature control device comprising a temperature control unit, the temperature control unit being configured to control a temperature of the solvent sprayed on the stage; and
a heat treatment device in the heat treatment part and configured to apply heat onto the stage.

10. The apparatus of claim 9 , wherein:
the light irradiation device and the temperature control device are in the printing part,
the light irradiation device irradiates the light onto the stage after the spraying of the ink onto the stage, and
the temperature control unit controls the temperature of the solvent while the light is being irradiated onto the stage.

11. The apparatus of claim 10 , wherein the electric field forming unit forms the electric field on the stage while the light is being irradiated onto the stage.

12. The apparatus of claim 9 , wherein:
the light irradiation device and the temperature control device are in the heat treatment part,
the light irradiation device irradiates the light onto the stage before the heat treatment device applies the heat onto the stage, and
the temperature control unit controls the temperature of the solvent while the light is being irradiated onto the stage.

13. The apparatus of claim 12 , wherein the electric field forming unit forms the electric field on the stage while the light is being irradiated onto the stage.

14. The apparatus of claim 9 , further comprising a transfer unit in the transfer part and configured to move the electric field forming unit from the printing part to the heat treatment part.

15. The apparatus of claim 14 , wherein:
the light irradiation device and the temperature control device are in the transfer part,
the light irradiation device irradiates the light onto the stage while the transfer unit moves the electric field forming unit, and
the temperature control unit controls the temperature of the solvent while the light is being irradiated onto the stage.

16. The apparatus of claim 9 , wherein the temperature control unit controls the temperature of the solvent by controlling a temperature of a substrate on the stage.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Won Ho
• Kim Buem Joon
• Kang Jong Hyuk
• Im Hyun Deok
• Choi Chung Sic

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10P72/0448

  Apparatus for applying a liquid, a resin, an ink or the like · CPC title

• H10W72/07183

  Means for monitoring · CPC title

• H10W72/07178

  Means for aligning · CPC title

• H10W72/07173

  Means for moving chips, wafers or other parts, e.g. conveyor belts · CPC title