Patent ID: 9383503
Filing Date: 2016-07-05
CPC Classification: G02B,G02F

Claim Text:
1. A display apparatus comprising: a backlight unit; a first polarizing plate which transmits light having a predetermined polarization; a liquid crystal layer, disposed over the first polarizing plate and configured to form an image with light transmitted by the first polarizing plate; a color filter, disposed over the liquid crystal layer, which transmits light having a predetermined wavelength; a diffusing unit disposed over the color filter, the diffusing unit comprising a second polarizing plate and a diffusing layer integrally provided on a top surface of the second polarizing plate, wherein no air layer is present between the second polarizing plate and the diffusing layer; and a light guide plate comprising a first prismatic structure array, comprising a plurality of prisms extending in a direction perpendicular to a direction of light emitted by the backlight unit, and a second prismatic structure array comprising a plurality of prisms extending in a second direction parallel to a direction of light emitted by the backlight unit; wherein the first prismatic structure array is disposed on one of a top surface of the light guide plate and a bottom surface of the light guide plate and the second prismatic structure array is disposed on another one of the top surface of the light guide plate and the bottom surface of the light guide plate; and further comprising a transparent substrate disposed between the color filter and the diffusing unit, wherein, a thickness from the transparent substrate to the diffusing layer is d, a pitch between sub-pixels of the display apparatus is Ps, and an angle of luminance half width at half maximum (HWHM) of light transmitted through the transparent substrate is θ′, and the thickness d satisfies: