Circularly polarizing plate, a liquid crystal display panel and a method for their preparation of the vertical alignment type

Circularly polarizing plate is, lambda / 4 phase difference plate (1), with respect to lambda / 4 retardation axis of the phase plate (1), so that the absorption axis with an angle of approximately 45 °, lambda / 4-position and a retardation plate (1) of the linear polarizer laminated on the main surface (2). lambda / 4 phase plate (1) has characteristics of reverse wavelength dispersion is Nz coefficient 1.6 or more. Or, circularly polarizing plate has the characteristics of reverse wavelength dispersion, a lambda / 4 phase plate Nz coefficient is 1.6 or more, and a linear polarizing plate laminated on the lambda / 4 the main surface of the retardation plate equipped with a. Planar shape is formed in a rectangular shape, a direction parallel to one side of the rectangle when the direction of the reference, the angle of approximately + 90 ° to the direction of the direction of the reference of the slow axis of the lambda / 4 phase plate a, it is formed to have an angle of approximately + 45 ° with respect to the direction of the direction of the reference of the absorption axis of the linear polarizing plate. By employing any one of the configurations of these, it is possible to provide a liquid crystal display panel of the circular polarizing plate and a vertical alignment type having the same having excellent viewing angle characteristics.