Method for manufacturing film electronic device

Abstract

A method of manufacturing an active matrix display device involves manufacturing a first substrate arrangement comprising a rigid glass substrate and an overlying plastic substrate. Pixel circuits areformed over the plastic substrate. The rigid glass substrate (12) is only removed from the plastic substrate after the mounting of the active and passive plates of the display into display modules (10). This method enables substantially conventional substrate handling, processing and cell making to be employed, for example in standard AMLCD factories, with only minimal extra equipment needed. A more general manufacturing method is also disclosed for fabricating TFTs on a spin-on plastic layer.

Description

technical field [0001] The present invention relates to the fabrication of electronic devices on plastic substrates, such as active matrix displays, and the devices themselves. Background technique [0002] The most common form of active matrix display is the active matrix liquid crystal display (AMLCD). AMLCDs are typically fabricated on large glass substrates with a thickness of 0.7 mm. Two plates are required for one unit, so that the finished display may be more than 1.4mm thick. Manufacturers of mobile phones and some laptops require thinner and lighter displays, and the resulting cells can be thinned in a HF (hydrofluoric acid) solution, usually around 0.8mm thick. Mobile phone manufacturers ideally would like displays to be even thinner, but have found that cells below 0.8 mm thick made by this method are too fragile. [0003] HF thinning is not attractive because it is a wasteful process that uses hazardous chemicals that are difficult to address safety and econom...

AI Technical Summary

Problems solved by technology

This process is not suitable for forming displays due to the etched holes throughout the array

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