Twisted nematic liquid crystal box and apparatus containing the same

Abstract

The invention discloses a point-by-point switching distorted nematic liquid crystal (TN) box and a device containing the TN box. The point-by-point switching TN box comprises a first control layer, a second control layer and a distorted liquid crystal. The first control layer comprises two layers of a first electrode and a second electrode which are insulated with each other and have parallel arrangement directions; the second control layer comprises two layers of a third electrode and a fourth electrode which are insulated with each other and have parallel arrangement directions; and the first electrode and the third electrode have vertical arrangement directions. When the first electrode, the second electrode, the third electrode and the fourth electrode have same external voltage, the distorted liquid crystal has natural torsion of 90 degrees between the first control layer and the second control layer. Through the control of external voltage values of the first electrode, the second electrode, the third electrode and the fourth electrode, the TN box can make incident linear polarizing light directly transmit or make the polarization direction of the light twist for 90 degrees, can increase the display area and improve the opening rate and the display quality.

Description

technical field [0001] The present invention relates to a twisted nematic liquid crystal (Twisted Nematic, TN) cell and a device containing the liquid crystal cell, in particular to a point-by-point switching TN cell and a 2D-3D stereoscopic display device containing the point-by-point switching TN cell. Background technique [0002] With the development of display technology, TN cells are used more and more widely. figure 1 Shown is a schematic diagram of an existing TN cell: a glass substrate 11 and a glass substrate 12 are arranged in parallel at a predetermined distance, and transparent electrodes 13 and 14 are respectively provided on the inner surfaces of the substrates 11 and 12, and the inner surfaces of the transparent electrodes 13 and 14 are There are alignment layer 15 and alignment layer 16 on the surface respectively, and the rubbing directions of alignment layer 15 and alignment layer 16 are perpendicular to each other; twisted nematic liquid crystal 17 is fil...

AI Technical Summary

Problems solved by technology

However, the manufacturing process of TFT is complicated and expensive, and since the signal lines and gate lines of the opaque TFT circuit need to be arranged on the transparent substrate, the black matrix must be used to cover the wiring area, resulting in a decrease in the effective display area and a decrease in aperture ratio. , and the existence of the black matrix may affect the display quality of the picture

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