| Summary: | 碩士 === 長庚大學 === 光電工程研究所 === 92 === As a result of the potential for slim profile, wide viewing angle, light weight, fast response, high brightness, and high contrast ratio, OLED display panel promise to be an attractive solution for next-generation flat panel displays.
Recently, the developing direction of OLED, besides passive form products in the low steps, it is active and full-color medium-and-large-sized panel that is more worth studying development , orientation large size , high resolution , high brightness , high contrast ratio , careful picture quality,, low power consumption ,etc. goal study. Among them should realize the large size panel and high resolution, the keys of these questions and the design of the drive circuit, with realize having sizable relations high.
This thesis is by proving that the technology of using LTPS-TFT of OLED panel realizes the active panel , but LTPS-TFT process by ELA, enable LTPS-TFT to produce the mutant problem of the characteristic, this will influence the uniformity of OLED panel, making the panel draw the quality influences big. So, there are many compensating rules which were reported, but, some of these ways can not solve all problems, for instance: The variation of the threshold voltage, the variation of the mobility, IR-Drop, and the charging time problem etc. So this thesis propose one new current type pixel circuit, call that "Asymmetrical-Vdd Current Mirror Pixel Circuit ". The design can solve above-mentioned four problems and make the large size and high resolution for AM-OLED displays more easily.
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