미세패턴 형성을 위한 그라비아 오프셋용 Ag Paste의 제조와 물성 연구

Abstract

Changing patterns？of modern？life？is？the biggest？role in？a？cellular phone, electronic dictionary, PMP, such as？the rapid spread of？portable personal？information devices. Accordingly, for portable devices that make up the interest is amplified, and flat-panel display, touch screen panel, an organic thin film transistor display and related electronic devices, such as technological development is accelerating. Touch screen panel input device such as a keyboard or mouse without using the on-screen letters in a specific location or objects into the hands of people that identify the location of a particular function is to handle an input device. The past, a touch screen panel was manufactured using a photolithography method, this technique is complicated and the manufacturing process, the loss of many materials, process complexity and manufacturing cost is very high there is a problem. In addition, treatment patterns, phenomena that occur in formation waste treatment cost is highly, even greater because it affects the environment, in recent years, that can replace this low-cost, low hazard and aims to simplify the process is in the process of developing technology. In recent years, such photolithography method to compensate for the disadvantages of using conductive paste printing method that is being evaluated as an alternative. The screen printing and gravure offset, a reverse offset printing method, and the current TSP companies in South Korea being the most commonly used is the screen printing. The advantages of screen printing method of printing equipment, low initial investment costs, the printing method is advantageous for mass production by this simple. However, high cost of Screen Printing, Paste often consumption of the screen mask above a certain level due to limitations of the printing is impossible. In addition, Roll-to-Roll printing method will slow down the production impossible. In contrast, the gravure offset printing method to form a fine pattern with high precision is possible. Paste consumption is low and Roll-to- Roll printing can be used because it has the advantage of faster production speeds. In this study, how to roll-to-roll printing method using a gravure offset printing using conductive paste for forming a fine pattern by developing superior conductivity at low temperatures can have as hardening of the conductive pattern formed on the flexible film that is goal of the study.