Inflation pressure-controllable packaging system for manufacturing organic electroluminescent devices

A technology of inflation pressure and packaging system, which is applied in the direction of electrical solid devices, semiconductor/solid device manufacturing, electrical components, etc., can solve the problems of troublesome operation, high maintenance cost, expensive glove box equipment, etc., and achieve easy replacement, cost saving, Ease of promotion

Active Publication Date: 2014-06-18
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has been widely used in industry, its disadvantages are that the inert gas glove box equipment is quite expensive, the operation is troublesome, the maintenance cost is also high, and the gas ...

Method used

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  • Inflation pressure-controllable packaging system for manufacturing organic electroluminescent devices
  • Inflation pressure-controllable packaging system for manufacturing organic electroluminescent devices
  • Inflation pressure-controllable packaging system for manufacturing organic electroluminescent devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 , the controllable inflation pressure packaging system for making organic electroluminescent devices includes gas cylinders (22), gas purifiers (21), intake valves (20), vacuum gauges (19), exhaust valves (23), exhaust The air system (24), the sample sealing device (25) are connected by the air pipe (18) and the ultraviolet light source (26). The sample sealing device is composed of an air inlet pipe (16), an exhaust pipe ( 17) Vacuum base (12), upper sealing ring (10), lower sealing ring (11), upper pressing plate (13), lower pressing plate (14) press the upper transparent cover (8) and the lower transparent cover ( 9) A closed vacuum chamber (15) is formed, a substrate (4) with an organic light-emitting layer is placed in the lower part of the vacuum chamber (15), and a movable magnet (5) with an adhesive underneath is placed in the upper part It is bonded with a glass sealing back cover (1) with a groove, a getter (2) is placed in its groove, and a thin...

Embodiment 2

[0034] see Figure 4, the production of organic electroluminescent devices can control the inflation pressure packaging system including gas cylinders (22), gas purifiers (21), intake valves (20), vacuum gauges (19), exhaust valves (23), exhaust The system (24) and the sample sealing device (25) are connected by a gas pipe (18). The sample sealing device is composed of a vacuum base (12), an upper sealing ring (10), a lower sealing ring (11), an upper pressing plate (13) 1. The lower pressing plate (14) presses the upper transparent cover (8) and the lower transparent cover (9) to form a closed vacuum chamber (15), and an organic light-emitting device is placed in the lower part of the vacuum chamber (15). Layered substrate (4), the upper part has a movable magnet (5) with adhesive below it, and it is bonded by adhesive to place a glass sealed rear cover (1) with a groove, and a suction magnet is placed in the groove agent (2), a thin layer of sealant (3) is placed on the...

Embodiment 3

[0038] This embodiment is basically the same as Embodiment 1, and its special feature is that a thin layer of sealant (3) is placed on the peripheral bead of the glass-sealed back cover (1) using heat-cured resin, Therefore, the used light source (26) is an infrared light source, which generates infrared heat to cure the resin, and glues the glass rear cover (1) and the periphery of the organic light-emitting substrate (4) together to complete the entire packaging process.

[0039] In this embodiment, the gas in the gas cylinder (22) is a mixed gas of high-purity nitrogen and a small amount of ammonia. The gas purifier (21) has the function of removing moisture and oxygen, the air extraction system (24) is a mechanical vacuum pump, the vacuum base (12) and the upper and lower pressure plates (13) and (14) in the sample sealing device (25) It is made of aluminum, and the upper and lower transparent cover plates (8) and (9) are glass sheets.

[0040]

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Abstract

The invention relates to an inflation pressure-controllable packaging system for manufacturing organic electroluminescent devices. The system comprises a gas steel cylinder, a gas purifier, an inlet valve, a vacuum meter, a bleeder valve, a gas bleeding system and a sample sealing device which are connected by gas pipes. A light source is above the sample sealing device. The sample sealing device comprises a vacuum support, an upper sealing ring and a lower sealing ring on the vacuum support, and an enclosed vacuum cavity, wherein the vacuum support comprises an inlet pipe and a gas bleeding pipe, and an upper press plate and a lower press plate press tightly on an upper transparent cover plate and a lower transparent cover plate to form the vacuum cavity. A substrate, with an organic luminescent layer, and a glass sealed back cover are disposed in the lower part and the upper part of the vacuum cavity. A movable magnet is stuck to the back cover, and a layer of a sealant is placed on a rim of the back cover. An integral body of the substrate and the back cover is attracted by an upper magnet above the upper transparent cover plate and a lower magnet corresponding to the upper magnet, wherein the lower magnet is below the lower transparent cover plate with a certain distance therebetween. The system uses an external light source, which is easy to replace. A plurality of types of sealants can be used for sealing.

Description

technical field [0001] The invention relates to the production of organic electroluminescent devices (OLEDs), thin film transistors (TFTs), solar cells, semiconductor devices, flat panel display devices, and other flat-panel devices that need to be airtightly packaged in order to isolate the influence of the atmosphere environment A controllable inflation pressure encapsulation system is used. Background technique [0002] At present, organic thin film electroluminescence (OLED) has developed rapidly, and it has been widely used in the fields of flat panel display and OLED lighting. But because it is very sensitive to moisture and oxygen, it must be packaged to isolate it from the influence of atmosphere and environment in order to obtain a long enough life. The current main packaging methods include thin film packaging such as CN201210057243 and airtight packaging such as adding some getters, desiccant and UV photosensitive glue (UV glue) on the convex edge around it wit...

Claims

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Application Information

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IPC IPC(8): H01L51/56
CPCH10K50/84
Inventor 张建华张志林蒋雪茵
Owner SHANGHAI UNIV
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