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An organic electroluminescent light emitting device package technology research

Author: WangDongLiang
Tutor: LiJunJian
School: University of Electronic Science and Technology
Course: Optical Engineering
Keywords: OLED Package Penetration Mass Spectrometry Vacuum sealing wax
CLC: TN383.1
Type: Master's thesis
Year: 2010
Downloads: 176
Quote: 0
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Abstract


The organic electroluminescent light emitting device (OLED) having a low power, lightweight, high brightness and a wide field of vision , as well as high contrast and response speed , and other characteristics , and can be well realized flexible display . Domestic and foreign scholars have conducted a lot of research , and has achieved a lot . However , OLED is still a lot of issues need to be resolved , the better OLED encapsulation to extend their life is one of the key issues . In the traditional packaging OLED devices typically is a UV curable epoxy resin encapsulated . As low barrier properties of the epoxy resin lead to water vapor and oxygen easily penetrate into the OLED devices internal , which greatly affect the life of the OLED . Therefore need to study a new package , better blocking water vapor and oxygen , to improve the life of the OLED device . Mass Spectrometric Measurement UV curable epoxy resin and a vacuum gas-permeability of the sealing wax , and found that the vacuum sealing wax to the water vapor barrier properties than the ultraviolet-curable epoxy resin about a magnitude reveal vacuum sealing wax for OLED package may first improve the prospects of its life . Vacuum sealing wax encapsulated OLED methods, including the production and the heating of the vacuum sealing wax sealing layer encapsulation method . Make sealing wax sealing layer , the the gasser processing method on the the waxed method and the vacuum sealing wax layer was tested. Encapsulation method using a laser locally heating vacuum sealing wax . Create a semiconductor laser device , and the measured power and the divergence angle of the output beam of the semiconductor laser through the optical fiber . Further, also studied the method of use of the overall heating OLED of vacuum sealing wax package . Production of OLED devices using UV-curable epoxy resin and vacuum sealing wax encapsulation on OLED test . Compare the two encapsulation of OLED devices , and device life test. The results show that the vacuum sealing wax encapsulated OLED lifetime than UV-curable epoxy encapsulated increased 2.4 times , consistent with the expected results . Finally, discuss the problems of vacuum sealing wax the encapsulated OLED research work and the direction of improvement .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Semiconductor technology > Light-emitting devices >
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