IPS panel

Abstract: An IPS-LCD, in which the direction of an optical axis and retardation values are adjusted according to the disposition of a phase retardation film replacing one protective film, obtains a contrast ratio similar to that of an IPS-LCD having upper and lower protective films, and has a small thickness. The IPS-LCD includes first and second polarizing plates (1, 2), an IPS panel (3), and a first protective film. Absorption axes (4, 5) of the first and second polarizing plates (1, 2) are orthogonal to each other, and an optical axis of a liquid crystal in the IPS panel (3) and the absorption axis (4) are parallel with each other. A second phase retardation film, obtained by coating a biaxial film (17) with a uniaxial C film (11), is disposed between the second polarizing plate (2) and the IPS panel (3) and is used as a second protective film.

Abstract: IBM has developed and already has started production of high screen quality and reliable TFT/LCD panels for vibration stress by Post Spacer(PS) technology. PS now is mandatory for 1) high contrast panel because of no degradation by light leakage which ball spacer has, 2) High quality IPS panel because of uniform cell GAP, 3) thin glass(0.5mm) panel because of wide margin for vibration stress.

Abstract: High-resolution displays are now needed for mobile equipment, not only for cell phones, but also for other devices such as ultramobile PCs and mobile Internet Protocol Television s (IPTV). We have developed a new low-cost and low-power driving method for the high-resolution IPS panel on the LTPS TFT platform. This method drives common electrodes separated by each line. So it can reduce inversion frequency, compared with “dot-inversion” or “line-inversion”. We also developed a prototype of a 5-inch WXGA (1366 × 768) using our new driving method and confirmed good display quality and a low-power consumption that was nearly equal to that of frame inversion.

Abstract: The invention relates to the technical field of display panels, and particularly discloses a low-reflectivity IPS panel. The low-reflectivity IPS panel comprises an upper polaroid, a colorful light filter plate, a liquid crystal layer, an array driving plate and a lower polaroid which are sequentially arranged from top to bottom. The liquid crystal layer is sealed by sealing frame glue; the colorful light filter plate is provided with a glass substrate layer, a matrix color-stopping layer, an insulating layer and a conducting ITO layer. According to the low-reflectivity IPS panel, the conducting ITO layer is arranged between the matrix color-stopping layer and the insulating layer or between the insulating layer and the liquid crystal layer, compared with the prior art, the reflected light is attenuated by about 40 times or even lower, and the readability of the panel under strong light is greatly enhanced; a conducting medium is arranged in the sealing frame glue, residual static electricity of the conducting ITO layer or an external field is effectively conducted to the array driving plate, conductive silver paste arranged on the periphery of the panel in the prior art is omitted, the structure is firmer, the whole display screen can be more effectively kept with a black border, and more attractive appearance is achieved.