The present disclosure relates to a display panel including a composite optical sheet that can replace the existing optical sheet and diffusion plate.

A laminate including: a base material layer, an optical functional layer, and a polarizing plate; wherein the optical functional layer includes a plurality of light transmissive portions extending in one direction along a face of the base material layer, and arrayed in a direction different from an extending direction thereof, and an in-between portion(s) formed in the intervals of adjacent light transmissive portions, an angle formed by an extending direction of the transmission axis of the polarizing plate, and the extending direction of the light transmissive portions is 1 to 41.7 in a front view, the base material layer is formed of polycarbonate, and the average coefficient of linear expansion or the average linear expansion of the laminate is within a predetermined range.

A laminated type optical member used in a display device for displaying an image based on pixels arrange in a matrix includes a first optical member, a second optical member, and spacers. The second optical member is disposed on a light entering side relative to the first optical member with a gap between the first optical member and the second optical member to overlap the first optical member. The spacers are disposed between the first optical member and the second optical member to hold the gap between the first optical member and the second optical member to form an air layer. The spacers are formed in linear shapes along a plate surface of the second optical member with axes tilted relative to an arrangement direction of the pixels.

An embodiment of the present disclosure provides a panel structure, its manufacturing method and a projection system, which can improve optical efficiency of the projection system and reduce the volume of the projection system. The panel structure includes: a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate; a reflective electrode at a side of the first substrate facing the second substrate; a transparent beam-splitting film disposed between the reflective electrode and the liquid crystal layer; and a common electrode disposed at a side of the second substrate facing the first substrate.

A liquid crystal display device includes a liquid crystal panel, a light-guiding plate on a back face of the liquid crystal panel, at least one LED light source along an end face of the light-guiding plate, and a turning film between the liquid crystal panel and the light-guiding plate. The turning film includes a substrate layer and a prism array on a back face of the substrate layer. A retardation value of the substrate layer is no less than 180 nm and no greater than 415 nm. In a planar view: an intersection angle between a transmission axis of the back face side-polarizing plate and ridge lines in the prism array is no less than 0 and less than 90; the ridge lines are parallel to the end face; and an intersection angle between a slow axis of the substrate layer and the transmission axis is (45/2).

A polarizing plate includes: a polarizer; a pattern layer on one surface of the polarizer, the pattern layer including a first refractive index layer having at least one engraved pattern and a second refractive index layer having a filling pattern filling at least a portion of the engraved pattern, the first refractive index layer having a higher refractive index than the second refractive index layer; and a first protective layer. The polarizing plate has a structure in which the polarizer, the second refractive index layer, the first refractive index layer and the first protective layer are sequentially stacked in that order, or in which the polarizer, the first protective layer, the second refractive index layer and the first refractive index layer are sequentially stacked in that order. The first protective layer includes a base film including at least one resin of triacetylcellulose, polyethylene terephthalate, cyclic olefin polymer, and acrylic resins.

According to one embodiment, a display device includes a display panel including a first substrate including a first transparent substrate having a first main surface, a first opposite and a side surface, a second substrate including a second transparent substrate having a second main surface and a second opposite surface, and a liquid crystal layer located between the first substrate and the second substrate, a light emitting element opposed to the side surface, a third transparent substrate, and a transparent layer located between the display panel and the third transparent substrate and having a second refractive index that is lower than a first refractive index.

A method for producing an optical element includes: disposing a joint layer on a substrate; forming a first portion and a second portion in a second surface of the joint layer; and forming a plurality of structural bodies, which are made of a dielectric, on the second surface of the joint layer. The joint layer has a first surface facing the substrate, and the second surface located on a side opposite the first surface. The first portion is covered with a resist layer, and the second portion is exposed from the resist layer. After the dielectric is laminated on at least the second portion, the resist layer is removed to form the plurality of structural bodies on the second surface.

Provided are a polarizing plate and a liquid crystal display device comprising the same, wherein the polarizing plate comprises a polarizer, a contrast ratio improvement film, an adhesive layer, and an antireflection film, which are sequentially laminated therein, the contrast ratio improvement film comprises a first protective layer, and a first resin layer and a second resin layer which are opposite to each other, the first resin layer includes an optical pattern including a pattern portion having a flat portion on one surface opposite to the second resin layer, and the adhesive layer has a haze of about 5% to about 40%.

An optical member 24 includes an optical sheet 15 and a frame (a light blocking member) 16. The optical sheet 15 includes a pair of plate surfaces and one of the plate surfaces is a light entering plate surface 15a through which light enters and another one of the plate surfaces is a light exit plate surface 15b through which the light exits. The optical sheet 15 includes an optical component that provides an optical effect on transmission light. The frame 16 has a light blocking property and extends along an edge section 15c of the optical sheet 15 and the edge section 15c is put within the frame 16. Accordingly, a frame width can be reduced.