Patent ID: 8488097

Claim:
A liquid crystal display device producing method for irradiating a liquid crystal display substrate, in which a plurality of pixels are formed in a matrix state and liquid crystal is sealed between a TFT substrate and a counter electrode substrate, with light having a predetermined wavelength to perform an orientation treatment for orienting molecules of the liquid crystal in a display region of the liquid crystal display substrate toward a predetermined direction in a state in which a predetermined electric field is applied to each of the pixels of the liquid crystal display substrate and maintaining the orientation state of the liquid crystal molecules toward the predetermined direction after the electric field applied to each pixel is removed, the method comprising the steps of: dipping the liquid crystal display substrate and a lamp in a transparent liquid having resistivity of a predetermined value or more and sufficiently high transmittance to the light in a state in which the liquid crystal display substrate and the lamp face each other; and lighting the lamp to irradiate the liquid crystal display substrate with the light having a predetermined light quantity in a state in which the electric field having a predetermined quantity is applied to each of the pixels.