Patent ID: 8228455
Filing Date: 2012-07-24
Classification: G03F,H01L

Abstract:
1. In a method for fabricating a liquid crystal display device comprising a gate line and a data line crossing each other to define a pixel region on a substrate, a thin film transistor including a gate electrode, a source electrode and a drain electrode on opposite sides of the gate electrode, and a semiconductor layer under the source/drain electrodes at a crossed portion of the gate line and the data line, and a protective film at the pixel region having a protective film hole between the pixel electrode and the drain electrode and the pixel region, at least one of the gate line, the data line, the pixel electrode, a channel of the semiconductor layer, and the protective film hole is formed by a method comprising the steps of: forming a thin film on a substrate; coating a photoresist film on the thin film; aligning a mask over the photoresist film, exposing the photoresist film with the mask thereon to a UV beam with a wavelength greater than 300 nm while causing refraction of the UV beam at the uneven portion and in the vicinity thereof, and developing the photoresist film exposed thus to form a photoresist film pattern with a width of below 2 μm; and patterning the thin film by using the photoresist film pattern.