Patent ID: 8537292

Claim:
A multi-functional liquid crystal parallax barrier device, being a liquid crystal device mainly formed by two parallax barrier structures, namely, a double-view vertical strip parallax barrier and a multi-view slant-and-step parallax barrier, wherein the two parallax barriers are disposed in the same horizontal display direction, so as to display a double-view 3D image and a multi-view 3D image, in addition to displaying a 2D image, through the control of an appropriate driving voltage, and a number of views of the multi-view image is greater than or equal to 2, and the liquid crystal structure device comprises an upper linear polarizer, an upper transparent substrate, an upper common electrode layer, an upper insulation layer, an upper barrier electrode layer, an upper alignment layer, a liquid crystal molecular layer, a lower alignment layer, a lower barrier electrode layer, a lower insulation layer, a lower common electrode layer, a lower transparent substrate, and a lower linear polarizer, wherein the electrode structures on the upper and lower barrier electrode layers are respectively installed with the double-view vertical strip parallax barrier or the multi-view slant-and-step parallax barrier, wherein regarding the structures of the double-view vertical strip parallax barrier and the multi-view slant-and-step parallax barrier, in the horizontal direction, the two parallax barriers respectively have a horizontal opening width B nW and B W of a light-transmissive element, a horizontal shielding width B nW of a shielding element, an optimal viewing distance Z n0 , which are calculated by the following formulas: B nW = P nW ⁢ L E P nW + L E B _ nW = ( n - 1 ) ⁢ B nW Z n ⁢ ⁢ 0 = P nW P nW - B nW ⁢ L B wherein n is a number of views and n≧2, P nW is a horizontal width of a smallest view image display unit, L F is an average interpupillary distance (IPD), and L B is an installation distance of the parallax barrier, regarding the structure of the multi-view slant-and-step parallax barrier, in the vertical direction, the slant-and-step parallax barrier has a vertical opening width B H of the light-transmissive element, which is calculated by the following formula B H = B W P W ⁢ P H where P H is a vertical width of a single RGB sub-pixel unit and P W is a horizontal width of the single RGB sub-pixel unit on a flat panel display screen.