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The Key Process Technology and Reliability Research for the Oled

Author: ZhuangZuoLei
Tutor: LiRongYu；ChenChenZuo
School: Shanghai Jiaotong University
Course: Electronics and Communication Engineering
Keywords: OLED Reliability Color filter Surface pre-treatment
CLC: TN873
Type: Master's thesis
Year: 2009
Downloads: 289
Quote: 0
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Abstract


When the OLED display is widely used and known with its continuing research and various applications, it enriches the colors of this information society in nowadays. However, wider marketing prospects require higher quality and process.In this paper, we introduced the development history, structure & principle and manufacturing procedures of OLED, and put emphasis on two key OLED mass production processes and set up an suitable evaluation plan for the OLED’s reliability. 1) Research & improvement for the OLED pre-treatment process: according to mass production, the effects of different pre-treatments were compared by the sheet resistance, contact angle, the electrical, optical and the efficiency characteristics. The results show the performances of the devices have been improved by these pre-treatments, the cleanness, brightness and the luminance efficiency of the devices, especially for both the UV Ozone and the O2 Plasma pre-treatment. 2) Research & improvement the color filter for full color OLED: in consideration of fabrication, lately white OLED with color filer and separate RGB lights side by side have become the promising methods to realize full color OLED. The effects of electrical-optical characteristics were compared by the luminance and surface roughness, the results show that the way of the white OLED with CF has the reliability and quality issue due to the roughness surface which is caused by the roughness on ITO thin film, particle and pin hole. So we must solve the CF roughness issue, obstruct the water between the ITO film and the Organic film and optimize the OLED structure when we want to use the CF to realize the Full color OLED. 3) Research & improvement for the OLED reliability evaluation: OLED is not like the LCD & other displays which have the existing evaluations the standards for its reliability, I base on the relevant theory and standard for the reliability, study the LCDs and other display’s reliability evaluation and test flow, so I can set up an suitable reliability evaluation and test flow for to meet the requirements for the OLED reliability and commercial product.These researches and improvements can optimize the OLED’s key process and set up an evaluation for its reliability to make up the nothingness for the OLED’s reliability. They have great directive values to realize the commercial product for OLED.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Terminal equipment > Display device,the display
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