Display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10707445-B2
Application number	US-201916440917-A
Country	US
Kind code	B2
Filing date	Jun 13, 2019
Priority date	Jun 1, 2016
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A display apparatus includes a substrate, a display arranged on the substrate and including a plurality of display elements, and an encapsulator arranged on the display and encapsulating the display. The encapsulator may include at least one inorganic film and at least one organic film, and the at least one organic film may include a matrix and an ultraviolet light absorbent dispersed in the matrix.

First claim

What is claimed is:

1. A display apparatus, comprising:
a substrate;
a display part arranged on the substrate and including a plurality of display elements; and
an encapsulator covering the display part,
wherein the encapsulator includes a first inorganic film, an organic film, and a second inorganic film in a sandwich structure in which the organic film is interposed between the first and second inorganic films,
wherein the organic film directly contacts each of the first inorganic film and the second inorganic film,
wherein the organic film includes an organic matrix, an ultraviolet light absorbent dispersed in the matrix and a functional group,
wherein the functional group is coupled with the organic matrix and the ultraviolet light absorbent, and
wherein the organic film exhibits a transmittance of 80% or higher with respect to light having a wavelength of 430 nm.

2. The display apparatus as claimed in claim 1 , wherein the ultraviolet light absorbent is a compound that includes a hydroxyl group.

3. The display apparatus as claimed in claim 1 , wherein the ultraviolet light absorbent includes one or more selected from a benzophenone compound, a benzotriazole compound, a benzoate compound, a cyanoacrylate compound, a triazine compound, an oxanilide compound, and a salicylate compound.

4. The display apparatus as claimed in claim 1 , wherein the functional group includes at least one selected from an acrylate group, a methacrylate group, and an epoxy group.

5. The display apparatus as claimed in claim 1 , wherein the organic film exhibits a transmittance of less than or equal to 10% with respect to light having a wavelength of 405 nm.

6. The display apparatus as claimed in claim 1 , wherein an uppermost top film of the encapsulator comprise an inorganic material, and the uppermost top film of the encapsulator does not include the ultraviolet light absorbent.

7. The display apparatus as claimed in claim 1 , wherein the display elements are configured to emit light at least in a direction toward the encapsulator.

8. A display apparatus, comprising:
a substrate;
a display part arranged on the substrate and including a plurality of display elements; and
an encapsulator covering the display part,
wherein the encapsulator includes a first inorganic film, an organic film, and a second inorganic film in a sandwich structure in which the organic film is interposed between the first and second inorganic films,
wherein the organic film directly contacts each of the first inorganic film and the second inorganic film,
wherein the organic film includes an organic matrix, and an ultraviolet light absorbent dispersed in the organic matrix,
wherein the ultraviolet light absorbent includes a functional group,
wherein the organic matrix includes at least one selected from an acrylic resin, a methacrylic resin, an isoprene resin, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin, a perylene resin, and an imide resin,
wherein the functional group is coupled with the organic matrix and the ultraviolet light absorbent,
wherein the ultraviolet light absorbent includes one or more selected from a benzophenone compound, a benzotriazole compound, a benzoate compound, a cyanoacrylate compound, a triazine compound, an oxanilide compound, and a salicylate compound.

9. The display apparatus as claimed in claim 8 , wherein the ultraviolet light absorbent is a compound that includes a hydroxyl group.

10. The display apparatus as claimed in claim 8 , wherein the functional group includes at least one selected from an acrylate group, a methacrylate group, and an epoxy group.

11. The display apparatus as claimed in claim 8 , wherein the organic film exhibits a transmittance of 80% or higher with respect to light having a wavelength of 430 nm.

12. The display apparatus as claimed in claim 8 , wherein the organic film exhibits a transmittance of less than or equal to 10% with respect to light having a wavelength of 405 nm.

13. The display apparatus as claimed in claim 8 , wherein an uppermost top film of the encapsulator comprise an inorganic material, and the uppermost top film of the encapsulator does not include the ultraviolet light absorbent.

14. The display apparatus as claimed in claim 8 , wherein the display elements are configured to emit light at least in a direction toward the encapsulator.

Assignees

• Samsung Display Co Ltd

Inventors

• Yun Wonmin
• Kim Yisu
• Park Eungseok
• Lee Byoungduk
• Cho Yoonhyeung
• Ju Yongchan

Classifications

• H10K59/10

  OLED displays · CPC title

• H10K50/85

  Arrangements for extracting light from the devices · CPC title

• H10K50/865

  comprising light absorbing layers, e.g. light-blocking layers · CPC title

• H10K50/8445 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/875

  Arrangements for extracting light from the devices · CPC title