An optical film is provided and has retardations satisfying relations (1) to (3): (1) 0≦Re(550)≦10; (2) −25≦Rth(550)≦25; and (3) |I|+|II|+|III|+|IV|>0.5 (nm),
with definitions: I=Re(450)−Re(550); II=Re(650)−Re(550); III=Rth(450)−Rth(550); and IV=Rth(650)−Rth(550),
wherein Re(450), Re(550) and Re(650) are in-plane retardations measured with lights of wavelength of 450, 550 and 650 nm, respectively; and Rth(450), Rth(550) and Rth(650) are retardations in a thickness direction of the optical film, which are measured with lights of wavelength of 450, 550 and 650 nm, respectively.

A compensation film includes: a first retardation layer including a polymer; a second retardation layer including a liquid crystal having positive birefringence; and a compensation layer including a liquid crystal having a vertical alignment property, where an angle between slow axes of the first and second retardation layers is in a range of about 85 to about 95 degrees, an entire in-plane retardation (R.sub.e0) of the first retardation layer, the second retardation layer and the compensation layer for wavelengths of 450 nm, 550 nm and 650 nm satisfy the following inequation: R.sub.e0(450 nm)<R.sub.e0(550 nm)<R.sub.e0(650 nm), an in-plane retardation (R.sub.e3) of the compensation layer for the incident light having a wavelength of about 550 nm is in a range of about zero to about 50 nm, and a thickness direction retardation (R.sub.th3) of the compensation layer for the incident light is less than zero.

According to one embodiment, a liquid crystal display device includes a liquid crystal layer, a first substrate and a second substrate. The first substrate includes a light reflection type of first pixel electrode and a first alignment film. The second substrate includes a counter-electrode and a second alignment film. A first alignment treatment direction is inclined in a second direction of rotation at an angle of 110° to 130° with respect to in a second alignment treatment direction. A liquid crystal material is used which contains an optically active substance which gives liquid crystal molecules a twisting force from the second alignment film toward the first alignment film in the second direction of rotation.

The present disclosure describes a flexible liquid crystal display panel and a method of manufacturing the same, a flexible liquid crystal display and a wearable device to reduce impact of the variation in the cell gap of the liquid crystal layer on the display effect and to improve the display quality. The flexible liquid crystal display panel comprises a first flexible substrate and a second flexible substrate arranged in cell alignment, and a liquid crystal layer located between the first flexible substrate and the second flexible substrate. The liquid crystal in the liquid crystal layer has a birefringence Δn1<0.045, and the liquid crystal layer has a cell gap d1>8 μm, which satisfy the formula Δn1*d1=λ0 where λ0 is a phase difference when the flexible liquid crystal display panel is not deformed and is a set constant.

Color derived from metallic nanostructures are often more efficient, more robust to environmental changes, and near impossible to damage or bleach due to overexposure. The embodiments combine these advantages with the millisecond re-configurability of liquid crystals to actively control a reflective color of a metallic nanostructure. Of the current technologies that boast active color tunability, many are pigmentation based (e-ink in e-readers) and/or need seconds to change color (photonic ink, electrochromic materials). Speed is an advantage of the embodiments and is comparable to current liquid crystal displays (˜120 Hz). Traditional LC displays use static polymer films (color filters) and white back light to generate color. Being able to actively tune the color from a single metallic nanostructure allows for smaller pixel size, increased resolution, and decreased fabrication cost compared to a conventional RGB color pixel without needing external white light source for extremely low power operations.

A thin film transistor (TFT) array substrate and a display panel are provided. The TFT array substrate has a base substrate, an anti-reflection layer, and a gate electrode insulating layer. The TFT array substrate has a light-transmitting region. The anti-reflection layer is disposed on the base substrate of the light-transmitting region. The gate electrode insulating layer is disposed on the anti-reflection layer. Light refractive indexes of the base substrate, the anti-reflection layer, and the gate electrode insulating layer are increasing sequentially.

Provided is a liquid crystal display device that has excellent visibility while using a protective film comprising a polyester film. The liquid crystal display device comprises a backlight light source, and a liquid crystal cell disposed between two polarizers; the backlight light source being a white light-emitting diode; each of the polarizers comprising a polarizing film and protective films laminated on both sides of the polarizing film; and at least one of the protective films being a polyester film having a retardation of 3,000 to 30,000 nm.

The present invention aims to provide an image display device including an optical film having a thickness suitable for practical use without including any special inorganic material, wherein the image display device has high color rendering properties and is capable of minimizing the occurrence of blackout and interference colors (rainbow unevenness) even when the image display device includes light sources that emit light having a narrow emission spectrum. The present invention provides an image display device including an optical film having an in-plane birefringence and a polarizer in this order, wherein the optical film and the polarizer are disposed to form an angle of about 45° between a slow axis of the optical film and an absorption axis of the polarizer, the optical film has a retardation of 3000 nm or more, and light incident on the optical film provides at least 50% coverage of ITU-R BT.2020.

A liquid crystal display device includes, in this order from a light source side: a first polarizer; a liquid crystal cell in which an azimuth orientation direction of a liquid crystal substance is altered by an electric field parallel to a display surface; and a second polarizer. Absorption axes of the first and second polarizers are disposed in directions orthogonal to each other. The absorption axis of the first polarizer and an orientation axis of molecules of the liquid crystal substance are disposed in parallel to each other. The device further includes: a first substrate layer between the liquid crystal cell and the first polarizer; and no substrate layer or a second substrate layer as only one layer between the liquid crystal cell and the second polarizer. An in-plane direction of an optical axis of the first substrate layer is parallel to the absorption axis of the first polarizer.

A display structure for an information handling system, including a top surface layer; a first nanoporous layer; a first polarizer layer; a thin-film-transistor (TFT) layer; a second polarizer layer; and a back light layer, wherein the first nanoporous layer is positioned between the top surface layer and the first polarizer layer, and wherein the first nanoporous layer has an index of refraction less than the index of refraction of the top surface layer to reduce specular reflection of the display structure.