A compound represented by the general formula (1) is useful as a light emitting material. In the general formula (1), Ar.sup.1 to Ar.sup.3 represent an aryl group, provided that Ar.sup.2 and Ar.sup.3 are the same as each other, and at least one of Ar.sup.1 to Ar.sup.3 represents an aryl group substituted with a group represented by the general formula (2). In the general formula (2), R.sup.1 to R.sup.8 represent a hydrogen atom or a substituent; Z represents O, S, R.sup.9N, (R.sup.10) (R.sup.11)C, or (R.sup.12) (R.sup.13)Si; and R.sup.9 to R.sup.13 each independently represent a hydrogen atom or a substituent. ##STR00001##

This invention discloses novel compounds containing a bitriazine building block. These compounds can be used as host materials or electron transporting materials for organic light-emitting devices.

A non-polarizer based variable light attenuating device includes a guest-host solution having a liquid crystal host and a guest dichroic dye disposed between first and second conducting layers provided on first and second transparent substrates. The guest-host solution has a low-haze while the guest dye orientation alters between a low light transmitting orientation and a high light transmitting orientation in response to a first voltage supplied to the first and second conducting layers. In response to a second voltage supplied to the first and second conducting layers, the guest-host solution changes to a focal conic light scattering orientation to achieve a high-haze translucent state.

A display apparatus includes a liquid crystal panel; light sources configured to emit blue light; and a reflective sheet including a first edge portion and a second edge portion, wherein a plurality of holes are disposed on the reflective sheet, the plurality of holes includes a first hole, a second hole, and a third hole. The first hole is disposed at a first distance from an edge of the first edge portion, the second hole is disposed at the first distance from an edge of the second edge portion, and the third hole is disposed at a second distance from the edge of the first edge portion. The display apparatus further includes first light conversion dots disposed around the first hole, second light conversion dots disposed around the second hole, and third light conversion dots disposed around the third hole.

The present disclosure provides a display device and a manufacturing method thereof and a method for converting a color gamut of a display device. The display device comprises a display panel which comprises a display substrate and a plurality of pixel units arranged on a first surface of the display substrate, wherein each pixel unit comprises a plurality of sub-pixels which comprises a variable color sub-pixel used for emitting light of at least one predetermined color according to a predetermined color gamut. Thus, the light of the predetermined color emitted by the variable color sub-pixels can alleviate the phenomenon of color shift of the display device and thereby improve multiple optical properties of the display device, and the display device can meet the requirements of different color gamuts, while not causing lowering of the optical properties.

Disclosed herein are a photosensitive resin composition and a cured film prepared therefrom. By comprising a copolymer (A) and a photopolymerizable compound (B) in specific amounts, a photosensitive resin composition may form a cured film having pattern developability with high resolution and good elasticity recovery rate. The composition may be effectively used for the formation of a cured film, particularly a spacer of a display device such as a liquid crystal display and an organic electroluminescence device.

The present application relates to a device for regulating the passage of light through a light-transmitting area which comprises a switching layer comprising a liquid-crystalline medium comprising at least one dichroic dye, where the parameters degree of light transmission and degree of anisotropy of the device are selected in a certain manner.

A display apparatus includes a liquid crystal panel; a plurality of light sources configured to emit blue light; a reflective sheet including a plurality of holes through which the plurality of light sources are exposed; a diffuser plate configured to diffuse the light emitted from the plurality of light sources; and an optical sheet configured to improve luminance of the light emitted from the plurality of light sources, wherein at least one of the diffuser plate or the optical sheet includes a plurality of light conversion patches.

A display panel includes an upper substrate on which a transparent organic material layer is formed. Holes are formed in the transparent organic material layer to expose portions of a top surface of the upper substrate to respectively define red, green, blue, and while sub pixel recesses, in which mixtures of red, green, and blue quantum dots with PDLC and PDLC are disposed. A lower substrate includes a TFT layer and a pixel electrode layer formed thereon. The pixel electrode layer includes a plurality of pixel electrodes. The upper and lower substrate are combined together with border adhesive provided therebetween such that the pixel electrodes are respectively corresponding to the red, green, blue, and white sub pixel recesses.

A liquid crystal display apparatus includes: a liquid crystal cell; a viewer side polarizing plate; a back-surface side polarizing plate, a reflective polarizer, a first prism sheet, a second prism sheet, and a wavelength conversion layer. The first prism sheet and the second prism sheet each has: a first main surface, which is flat; and a second main surface, on which a plurality of unit prisms are arrayed. In the liquid crystal display apparatus, convex portions formed by the plurality of unit prisms on the second main surface of the first prism sheet are bonded to a main surface of the reflective polarizer on an opposite side to the back-surface side polarizing plate, and/or convex portions formed by the plurality of unit prisms on the second main surface of the second prism sheet are bonded to the first main surface of the first prism sheet.