Display apparatus having sealing portion and fabrication method thereof

• US 9,093,668 B2
• Filed: 08/26/2013
• Issued: 07/28/2015
• Est. Priority Date: 04/16/2013
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Han, Byung-Uk
• Primary Examiner(s): HOANG, QUOC DINH
• Application Number:
  US14/010,453
• Publication Number:
  US 20140306192A1
• Time in Patent Office: 701 Days
• Field of Search: 438/25, 438/26, 438/29, 438/55, 438/64, 438/799, 438/727, 438/792, 438/798
• US Class Current: 1/1
• CPC Class Codes: H01L 21/56 Encapsulations, e.g. encapsulation layers, coatings
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/421 using coherent electromagnetic radiation, e.g. laser annealing

Abstract

A display apparatus includes a sealing portion. A method for fabricating the sealing portion includes: irradiating a pulse laser beam onto a deposition target to form the sealing portion at an edge where a substrate and an encapsulation face each, wherein a display unit is formed on the substrate, and the encapsulation is configured to seal the substrate; bonding the substrate and the encapsulation to each other; hardening the sealing portion; and monitoring the sealing portion. Thus, structural strength of the sealing portion is improved.

Claims

1. A method of fabricating a sealing portion of a display apparatus, the method comprising:

irradiating a laser beam at a deposition target spaced apart from a deposition substrate to form a sputtered deposition material,

forming the sealing portion by depositing the sputtered deposition material on the deposition substrate comprising one of a substrate and an encapsulation, the sealing portion formed at an edge at which the substrate and the encapsulation face each other, wherein a display unit is formed on the substrate, and the encapsulation is for sealing the substrate;

bonding the substrate and the encapsulation to each other;

hardening the sealing portion; and

monitoring the sealing portion, wherein the sealing portion is formed through a low temperature process of 40°

C. or less.

2. The method of claim 1, wherein the sealing portion is formed at an edge of at least one of the substrate and the encapsulation.

3. The method of claim 2, wherein the sealing portion is continuously formed along an edge of the display unit.

4. The method of claim 1, wherein the forming of the sealing portion comprises:

inserting the deposition substrate comprising one of the substrate and the encapsulation into a chamber to install the deposition substrate on a substrate holder;

installing the deposition target on a target holder that is installed to correspond to the substrate holder; and

forming the sealing portion on the deposition substrate by using particles generated by irradiating the laser beam onto the deposition target from a laser irradiator installed outside the chamber.

5. The method of claim 4, wherein the laser beam generated from the laser irradiator is a pulse laser beam.

6. The method of claim 4, wherein the sealing portion is formed in a vacuum chamber,

7. The method of claim 1, wherein the hardening of the sealing portion comprises irradiating another laser beam from a laser system installed outside the substrate and the encapsulation that are bonded to each other.

8. The method of claim 7, wherein the laser system comprises a temperature sensor to measure a surface temperature of a part onto which the another laser beam is irradiated, to control an output and a speed of a laser irradiator of the laser system.

9. The method of claim 1, wherein the monitoring of the sealing portion comprises monitoring a quality of the sealing portion through a laser ablation system.

10. The method of claim 1, wherein the sealing portion comprises glass frit.