In-plane switching

Screen technology used for liquid crystal displays In-plane switching (IPS) is a screen technology used for liquid-crystal displays (LCDs). In IPS, liquid crystal molecules are sandwiched between, and aligned parallel to, two panels (planes) of glass substrate. The molecules are reoriented by applying electric field, while remaining essentially parallel to the surfaces to produce an image.[clarification needed] It was designed to remedy issues of poor viewing angle and color reproduction of the twisted nematic field effect (TN) matrix LCDs prevalent in the late 1980s. History Computer monitors started utilizing active matrix TFT LCD panels in the 1980s and early 1990s, as an alternative technology to the cathode ray tube. These early LCD displays suffered from inverted grayscale, loss of contrast and color reproduction accuracy when viewed from extreme angles, and had significant display motion blur due to poor response time. IPS and vertical alignment (VA) are designed to alleviate these issues. An early experimental IPS-LCD is described in a 1974 patent. It used inter-digitated electrodes on only one glass substrate, to produce electric field essentially parallel to the glass sub