In a liquid crystal display device of an IPS system, to realize reduction of manufacturing cost and improvement of yield by decreasing the number of steps for manufacturing a TFT. A channel etch type bottom gate TFT structure, where patterning of a source region and a drain region and patterning of a...http://www.google.de/patents/US7656491?utm_source=gb-gplus-sharePatent US7656491 - Liquid crystal display device and method of manufacturing the same
