Reusable substance amount sensor in prodn. of organic luminous device

Abstract

The present invention relates to a method for controlling the deposition of organic materials in the manufacture of an organic light-emitting device, the method comprising: depositing an organic material in a deposition area to form a layer of an organic light-emitting device; setting a movable sensor, when the sensor moves to A signal indicative of the deposition rate and thickness of the organic material forming the layer is provided in the deposition zone and when covered during the deposition step. The method further includes: controlling the deposition of the organic material based on the signal to control the deposition rate and thickness of the organic material forming the layer; moving the movable sensor from the deposition area to a cleaning position; and removing the sensor from the movable sensor. Organic materials enable removable sensors that can be reused.

Description

Technical field: [0001] The present invention relates to methods of monitoring and controlling organic layers of organic materials formed by physical vapor deposition in the manufacture of organic light-emitting devices. Background technique: [0002] Organic light emitting devices, also known as organic electroluminescence light emitting devices, can be fabricated by sandwiching two or more organic layers between a first electrode and a second electrode. [0003] In a passive matrix (passive matrix) organic light-emitting device with a conventional structure, a plurality of laterally spaced light-transmitting anodes such as indium-tin-oxide (ITO) are formed on a light-transmitting substrate ( For example, on a glass substrate). Two or more organic layers are then sequentially formed using vapor deposition of respective organic materials from respective sources in a chamber maintained at reduced pressure (typically less than 10-3 Torr). A plurality of laterally spaced cath...

AI Technical Summary

Problems solved by technology

[0011] However, in a manufacturing environment where large numbers of organic light-emitting devices are repeatedly fabricated, replacement of "overloaded" crystalline mass sensors or crystalline mass sensors with cracked or peeled-off organic layers is severely limited. because the manufacturing system is configured to comprehensively provide the ability to produce all organic layers on many device structures, even fully enclosed OLEDs

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