Display device having transmittance adjusting layer

Patent metadata

Field	Value
Publication number	US-10224515-B2
Application number	US-201615271956-A
Country	US
Kind code	B2
Filing date	Sep 21, 2016
Priority date	Sep 21, 2015
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

Discussed herein is an organic light-emitting display (OLED) device that may include an organic light-emitting element layer disposed on a substrate; and an encapsulation layer covering the organic light-emitting element layer to block moisture and/or oxygen from permeating, wherein the encapsulation layer includes a barrier film having at least one transmittance adjusting layer that adjusts a ratio at which light emitted from the organic light-emitting element layer exits the OLED device, whereby the use of a polarizer is avoided.

First claim

What is claimed is:

1. An organic light-emitting display (OLED) device comprising:
an organic light-emitting element on a substrate; and
an encapsulation layer covering the organic light-emitting element and configured to block moisture and oxygen from permeating,
wherein the encapsulation layer includes a barrier film having a barrier coating layer and a plurality of transmittance adjusting layers that adjust a transmittance ratio of light emitted from the organic light-emitting element and an adhesive film configured to attach the barrier film to the organic light-emitting element,
wherein the barrier coating layer is made of a flexible transparent polymer resin, and the plurality of transmittance adjusting layers are made of silicon oxide (Si-Oxide) or titanium oxide (Ti-Oxide), and the plurality of transmittance adjusting layers are disposed above and below the barrier coating layer, and
wherein the adhesive film includes a light-absorbing material for adjusting a transmittance of the light.

2. The OLED device of claim 1 , wherein the plurality of transmittance adjusting layers are configured to adjust the transmittance of the light emitted from the organic light-emitting element to provide luminance required for implementing virtual reality.

3. The OLED device of claim 1 , wherein the plurality of transmittance adjusting layers include two to seven layers.

4. The OLED device of claim 1 , wherein each of the plurality of transmittance adjusting layers has a thickness of 0.01 μm to 1 μm.

5. The OLED device of claim 1 , wherein the adhesive layer and the plurality of transmittance adjusting layers are configured to allow the light emitted from the organic light-emitting element to pass through the adhesive layer and the plurality of transmittance adjusting layers at a resulting total transmittance of 40 to 60%.

6. The OLED device of claim 5 , wherein the adhesive layer and the plurality of transmittance adjusting layers reduce a luminance on behalf of a polarizing plate, to thus forego a use of the polarizing plate.

7. An organic light-emitting display (OLED) device employed by equipment for implementing virtual reality, the OLED device comprising:
a structure for adjusting transmittance to provide luminance characteristics for a display device for implementing virtual reality image display characteristics,
wherein the structure for adjusting transmittance includes a barrier film and an adhesive film, the barrier film comprising a barrier coating layer and a plurality of transmittance adjusting layers, and the adhesive film having a light-absorbing material, and
wherein the barrier coating layer is made of a flexible and transparent polymer resin and is configured for suppressing at least one of oxygen and moisture from permeating, and the plurality of transmittance adjusting layers are disposed above and below the barrier coating layer.

8. The OLED device of claim 7 , wherein the structure for adjusting transmittance is configured to adjust a transmittance of light generated in an organic light-emitting element so that the OLED device exhibits a luminance according to use environment for implementing the virtual reality image display characteristics.

Assignees

• Lg Display Co Ltd

Inventors

• Lim Heechul
• Han Gyuhyeong

Classifications

• G02B27/017

  Head mounted · CPC title

• G02B2027/0118

  comprising devices for improving the contrast of the display / brillance control visibility · CPC title

• G02B27/0172

  characterised by optical features · CPC title

• G02B5/207

  comprising semiconducting materials · CPC title

• G02B5/22 Primary

  Absorbing filters {(G02B5/201 - G02B5/208 take precedence)} · CPC title