Patent ID: 8169573
Filing Date: 2012-05-01
Classification: G02F

Abstract:
1. An in-plane switching (IPS) mode liquid crystal display (LCD) device using a phase-difference film, comprising: an LCD panel including a first substrate, a second substrate and a first liquid crystal layer between the first and second substrates, the first liquid crystal layer being driven by a transverse electric field between pixel and common electrodes on one of the first and second substrates of the LCD panel; first and second polarizing sheets positioned adjacent to the first and second substrates of the LCD panel respectively; and a first phase-difference compensation portion positioned between the first substrate of the LCD panel and the first polarizing sheet, the first phase-difference compensation portion including a plurality of phase-difference films having second, third, and fourth liquid crystal layers with tilt angles that are different from each other, wherein a sum total of a total tilt angle of the first phase-difference compensation portion and a tilt angle of the first liquid crystal layer of the LCD panel is zero; wherein the tilt angle of the first phase-difference compensation portion is controlled by adjusting the thickness of the second, third and fourth liquid crystal layers such that the sum total of the total tilt angle of the first phase-difference compensation portion and the tilt angle of the first liquid crystal layer of the LCD panel is zero; and wherein the tilt angle of the first liquid crystal layer of the LCD panel is 1°, and the total tilt angle of the first phase-difference compensation portion is −1°.