A display device includes: a display panel including a plurality of display elements; a window member disposed on the display panel; and a plurality of first light conversion members that convert the path of light emitted from the display elements and whose cross sections are about 450 nm to about 950 nm in diameter, wherein the first light conversion members directly contact a surface of the window member.

The present disclosure provides a display device that include: a display panel that includes a display area and a peripheral area that is provided at the periphery of an edge of the display area; a window that is provided on one side of the display panel to protect the display panel; and an adhesive film that is provided between the display panel and the window to bond the display panel and the window to each other, wherein the adhesive film in an area that corresponds to the peripheral area and the adhesive film in an area that corresponds to the display area have different properties.

An electro-holographic light field generator device comprises surface acoustic wave (SAW) optical modulators arranged in different directions. Specifically, some embodiments have SAW modulators arranged in pairs, nose-to-nose with each other, and have output couplers that provide face-fire light emission. These SAW modulators also possibly include SAW sense transducers and/or viscoelastic surface material to reduce crosstalk.

Brightness in conventional total internal reflection image displays may decrease due to incident light passing through the dark pupil region in the white state. Certain embodiments of the disclosure relate to an enhanced brightness total internal reflection-based image display utilizing a front sheet having an array of modified hemispherical protrusions with a partially light reflective surface. Modifying the structure of the convex protrusions of the transparent front sheet and adding a light reflective layer on specific areas of the protrusions may increase brightness in the white state. Controlling the size, depth and angle of the structure of the convex protrusions may direct incident light by one or more of total internal reflection and specular reflection in a controllable manner to enhance brightness of the display.

A display apparatus and a backlight module are disclosed. The backlight module includes a light emitting assembly, configured to generate display lights; and a light guiding plate, configured to transmit the display lights to the display panel. The light guiding plate is divided into reflective areas and transmission areas; each medium in the reflective areas has a refractive index greater than that of each medium in the transmission areas. In this application, two media with different refractive indices are provided in the light guiding plate. In this way, the utilization rate of the energy of the back light source may be improved, the consumption of the display may be reduced, the power may be saved and the battery life of the display apparatus may also be extended.

A display device according to an exemplary embodiment includes: a thin film transistor array panel; and a color conversion display panel overlapping the thin film transistor array panel, the color conversion display panel including: a substrate; a color conversion layer positioned between the substrate and the thin film transistor array panel and including a semiconductor nanocrystal; a transparent layer positioned between the substrate and the thin film transistor array panel; and at least one of a first buffer layer positioned between the color conversion layer and the substrate and between the transparent layer and the substrate, and a second buffer layer positioned between the color conversion layer and the thin film transistor array panel and between the transparent layer and the thin film transistor array panel, and at least one of the first buffer layer and the second buffer layer includes a porous layer.

Three-dimensional displays are described using electrophoresis or electro-wetting media to modulate the total internal reflection of light in a waveguide.

A terahertz wave generating element includes a nonlinear optical crystal generating terahertz waves by propagating light, and a coupling member propagating the generated terahertz waves. The coupling member includes a reflecting face reflecting at least part of the generated terahertz waves. The reflecting face is convex in a propagation direction of the generated terahertz waves. An angle at the coupling member side between the reflecting face and the propagation direction of the light is greater than 90 degreescos.sup.1 (n.sub.g/n.sub.THz) but smaller than 90 degrees at a plane including the light propagation direction. n.sub.g represents a group refractive index of the nonlinear optical crystal at a wavelength of the light, n.sub.THz the refractive index of the coupling member at a wavelength of the generated terahertz waves. A curvature radius of the reflecting face, in a reflection region reflecting the radius terahertz waves, is smaller the farther downstream in the light propagation direction.

Brightness in conventional total internal reflection image displays may decrease due to incident light passing through the dark pupil region in the white state. Adding sub-wavelength structures to the surface of the convex protrusions on the transparent front sheet may increase brightness in the white state. Control of the size, spacing, shape and refractive index of the sub-wavelength structures may lead to zeroth order reflection and enhanced brightness.

Provided is a thin light unit for a display device that includes, for example, a high refraction film including an inclined portion at a first side of the high refraction film and a flat portion extended from the inclined portion to a second side of the high refraction film; a second member on the inclined portion at the first side of the high refraction film and having a first width; a first member on the flat portion in a middle of the second side of the high refraction film and separated from the second member; a third member on the flat portion and having the first width; and a light source adjacent to the first member at a side of the flat portion.