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Hermetic package with getter materials

A technology of absorber and adhesive, which is applied in the field of packaging of organic light-emitting devices, and can solve the problems of reducing device efficiency, device light output and aesthetic appearance loss, etc.

Inactive Publication Date: 2012-07-11
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to compromising the light output and aesthetics of the device, dark spots can also be leakage paths that reduce the efficiency of the device

Method used

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  • Hermetic package with getter materials
  • Hermetic package with getter materials
  • Hermetic package with getter materials

Examples

Experimental program
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Effect test

example 1

[0033] exist Image 6 In the illustrated embodiment, device 600 is built on substrate 660 . Device 600 includes a first electrode (anode) 665 , a light emitting layer 670 and a top electrode (cathode) 685 having a highly reflective surface 686 facing substrate 660 .

[0034] The OLED device is packaged in a hermetic package consisting of a rear membrane 630 and a transparent front membrane 606 . The front diaphragm 606 placed on the light emitting side 601 of the device 600 has a hard coat layer 607 and a water vapor barrier layer 610 on both sides. The two membranes 606 and 630 are bonded to each other along the peripheral region with a suitable encapsulant 635 and the OLED device 600 is centered.

[0035] The rear membrane 630 is machined from a multilayer material including a thin interface layer 635 of adhesive and an aluminum barrier layer. The rear membrane 630 was degassed at 100°C for 12 hours. Dry CaO absorbent 625 in powder form was spread on a first film 621 of ...

example 2

[0040] exist Figure 7 In the illustrated embodiment, the device 700 is built on a substrate 760 with a hard coating 761 on both sides. Device 700 includes a first electrode (anode) 765 , a light emitting layer 770 and a top electrode (cathode) 785 with a highly reflective surface 786 facing substrate 760 .

[0041] The OLED device is packaged in a hermetic package consisting of a rear membrane 730 and a transparent front membrane 706 . The front diaphragm 706 on the light emitting side 701 of the device 700 has a hard coat layer 707 and a moisture barrier layer 710 on both sides thereof. The two membranes 706 and 730 are bonded to each other along the peripheral region with a suitable sealant 735 .

[0042]The absorber is deposited on the hard coat layer 761 of the transparent substrate 760 in a recurring pattern of dots 725 . Thus, the absorber is in the optical path on the light-emitting side 701 of the device 700 . The side of the absorber material facing the light fro...

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Abstract

Organic light emitting devices include a transparent substrate, a first transparent electrode disposed on the transparent substrate, a second electrode, an electroluminescent layer sandwiched between the electrodes, and a getter layer disposed on a light emitting surface of the substrate opposite the first transparent electrode, and comprising a metal selected from beryllium, magnesium, calcium, strontium, barium, radium and titanium.

Description

Background technique [0001] Electronic devices such as organic photovoltaic devices or organic light emitting diode (OLED) devices are easily affected by water and / or oxygen. OLEDs have a number of beneficial properties, including their high efficiency, low activation voltage, fast response time, high brightness, high visibility due to self-emission, excellent impact resistance, and ease of handling of the solid-state devices in which they are used. OLEDs have practical applications in televisions, graphics display systems, digital printing and lighting. [0002] OLEDs are typically built as a laminate on top of a suitable substrate material such as glass, silicon, metal foil or specialty plastics. The laminated layers consist of: two electrodes (anode and cathode); a light-emitting layer of light-emitting organic solids and a semiconductor layer for electron and hole conduction. The emitting layer can also consist of a single layer comprising all necessary emitting organic ...

Claims

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Application Information

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IPC IPC(8): H01L51/52
CPCH01L51/5237H10K59/873H10K59/877H10K59/8721H10K59/874H10K50/13H10K50/11H10K50/854H10K50/846H10K50/8426
Inventor S·拉库夫D·S·法库哈C·M·A·赫勒A·G·埃尔拉特
Owner GENERAL ELECTRIC CO
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