Liquid crystal display apparatus
A liquid crystal display apparatus includes: a liquid crystal panel; and a viewer-side polarizing plate stacked on a light exit surface of the liquid crystal panel, and the viewer-side polarizing plate includes a patterned layer including a first resin layer and a second resin layer having different indexes of refraction; and a patterned portion including multiple engraved optical patterns and a flat section between adjacent engraved optical patterns of the multiple optical patterns is formed at an interface between the first resin layer and the second resin layer, and the liquid crystal display apparatus satisfies Equation 1 herein and the engraved optical patterns have an aspect ratio of 0.3 or more.
1. A liquid crystal display apparatus comprising a liquid crystal panel and a viewer-side polarizing plate stacked on a light exit surface of the liquid crystal panel,
wherein the viewer-side polarizing plate comprises a patterned layer comprising a first resin layer and a second resin layer having different indexes of refraction; and a patterned portion comprising multiple engraved optical patterns and a flat section between adjacent engraved optical patterns of the multiple engraved optical patterns is formed at an interface between the first resin layer and the second resin layer, wherein the liquid crystal display apparatus satisfies the following Equation 1 and the engraved optical patterns have an aspect ratio of 0.3 or more:
10≤ P 2/ P 1≤30,
where P1 is a pitch (unit: μm) of the patterned portion, and P2 is a width (unit: μm) of a pixel of the liquid crystal panel in a same direction as a maximum width of an engraved optical pattern of the adjacent engraved optical patterns, the pitch of the patterned portion being defined as a sum of the maximum width of the engraved optical pattern and a maximum width of the flat section, wherein, in Equation 1, P2 is from 150 μm to 950 μm.
2. The liquid crystal display apparatus according to claim 1 , wherein the engraved optical patterns are arranged in a same direction as a short-side direction of the liquid crystal panel.
3. The liquid crystal display apparatus according to claim 2 , wherein P2 is the sum of a width of a unit pixel of one pixel in a longitudinal direction of the unit pixel and a width of a black matrix in a longitudinal direction thereof.
4. The liquid crystal display apparatus according to claim 1 , wherein the engraved optical patterns are arranged in a same direction as a long-side direction of the liquid crystal panel.
5. The liquid crystal display apparatus according to claim 4 , wherein P2 is the sum of the sum of widths of unit pixels of one pixel in a transverse direction of each unit pixel and widths of three black matrixes in a transverse direction thereof.
6. The liquid crystal display apparatus according to claim 1 , wherein the pixel is a pixel assembly comprising three unit pixels consisting of a red unit pixel, a green unit pixel, and a blue unit pixel, and black matrixes each separating a corresponding unit pixel from other unit pixels.
7. The liquid crystal display apparatus according to claim 1 , wherein the liquid crystal panel comprises multiple pixels and the multiple pixels are arranged in a long-side direction and a short-side direction of the liquid crystal panel, respectively, such that a red unit pixel, a green unit pixel, and a blue unit pixel are repeatedly arranged in the stated order in the long-side direction, and each of red unit pixels, green unit pixels, or blue unit pixels are arranged alone in the short-side direction.
8. The liquid crystal display apparatus according to claim 1 , wherein, in Equation 1, P1 is from 7 μm to 50 μm.
9. The liquid crystal display apparatus according to claim 1 , wherein the engraved optical patterns are arranged in a same direction as a light absorption axis of the polarizer.
10. The liquid crystal display apparatus according to claim 1 , wherein the engraved optical patterns have an N-gonal cross-section, N being an integer of 3 to 10, or a cross-section having a curved side surface.
11. The liquid crystal display apparatus according to claim 1 , wherein the maximum width of the engraved optical pattern is from 30% to less than 100% of the pitch of the patterned portion.
12. The liquid crystal display apparatus according to claim 1 , wherein the patterned portion has a constant P1 and the adjacent engraved optical patterns have a same maximum width.