G02F1/133635

DISPLAY DEVICE WITH A CAPACITIVE TOUCH PANEL
20190171051 · 2019-06-06 · ·

Disclosed is a display device with a capacitive touch panel including a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate; a first conductive layer, a dielectric layer and a second conductive layer constituting a capacitive touch sensor; and a substrate, in which the first conductive layer, dielectric layer, second conductive layer, and substrate are positioned closer to the cover layer than is the viewing-side polarizing plate, the first conductive layer is formed on one surface of the to substrate, the dielectric layer is formed on a surface of the first conductive layer opposite to the substrate side, the second conductive layer is formed on a surface of the dielectric layer opposite to the first conductive layer side, the substrate has an optical film with a phase difference of (2n?1)?/4, where n is a positive integer, the viewing-side polarizing plate has a polarizing film, and a slow axis of the optical film intersects a transmission axis of the polarizing film at an angle of about 45? as viewed in a stacking direction.

LIQUID CRYSTAL DISPLAY DEVICE, AND METHOD FOR PRODUCING LIQUID CRYSTAL DISPLAY DEVICE

The present invention provides a liquid crystal display device having excellent visibility outdoors, and a method for producing a liquid crystal display device capable of producing such a liquid crystal display device. The liquid crystal display device includes: a pair of substrates; a liquid crystal layer that is sandwiched between the pair of substrates and contains a liquid crystal material; and an alignment control layer that is in contact with the liquid crystal layer, at least one of the pair of substrates including a retardation layer on its liquid crystal layer side, the alignment control layer aligning the liquid crystal material in a direction horizontal to faces of the substrates, and containing a polymer containing at least a unit derived from a specific first monomer.

Optical films for electronic device displays

A display may include an optical film to promote sunglass-friendly viewing of the display. Displays may include linear polarizers. For example, a liquid crystal display may have a linear polarizer above a liquid crystal layer, whereas an organic light-emitting diode display may have a linear polarizer that forms a portion of a circular polarizer to reduce reflections in the display. Displays that emit linearly polarized light may not be compatible with polarized sunglasses. To ensure an optimal user experience for users wearing sunglasses, displays may include sunglass-friendly optical films. A sunglass-friendly optical film may be a film formed from a birefringent material such as a polymer or liquid crystal. The sunglass-friendly optical film may have an optical axis that is at a 45? angle relative to the optical axis of the underlying linear polarizer. The sunglass-friendly optical film may be patterned to have reduced thickness regions.

Optical stack for switchable directional display

A privacy display comprises a spatial light modulator and a compensated switchable liquid crystal retarder arranged between first and second polarisers arranged in series with the spatial light modulator. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss, whereas off-axis light has reduced luminance. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction over a wide polar field. In a wide angle mode of operation, the switchable liquid crystal retardance is adjusted so that off-axis luminance is substantially unmodified.

FLEXIBLE SUBSTRATE

Disclosed is a flexible substrate, which relates to the technical field of display. The flexible substrate includes a first film and a second film arranged from bottom to top in sequence. The second film is arranged to counteract birefringence effect generated by the first film so as to eliminate phase retardation of the flexible substrate. Thus, display effect can be improved, and impacts on a substrate due to increasing of film thickness can also be avoided. Besides, thickness of the flexible substrate can be determined according to actual needs.

Liquid crystal display device
10241364 · 2019-03-26 · ·

The present invention is a liquid crystal display device including a first polarizer, a first protective layer, a first substrate, a first optical alignment film, a liquid crystal layer, a second optical alignment film, a second substrate including a signal electrode and an opposite electrode, a second protective layer, a second polarizer in this order, in which the layers satisfy the relationship nx=nynz, an in-plane retardation of each of optical alignment films is greater than or equal to 1 nm, given that R.sub.1 is a thickness-direction retardation of each of the protective layers and that R.sub.2 is the in-plane retardation of each of optical alignment films, the relationship R.sub.10.047R.sub.2.sup.22.1R.sub.2+44.3 is satisfied, the liquid crystal layer has a positive dielectric anisotropy, and a transmission axis of the second polarizer is perpendicular to an initial alignment direction of the liquid crystal molecules.

Multilayer phase difference plate, polarizing plate, and image display device

A phase difference plate includes a phase difference plate P1 and a phase difference plate P2. An in-plane slow axis of the phase difference plate P1 is orthogonal to an in-plane slow axis of the phase difference plate P2. The phase difference plate P2 includes a layer of a liquid crystal material oriented in an in-plane direction. An in-plane retardation ReP2(?) at a wavelength A nm of the phase difference plate P2 satisfies the following formulae (e1) and (e2): {Re2 (400)?Re2(550)}/{Re2(550)?Re2(700)}<2.90 (e1), and Re2(400)/Re2(700)>1.13 (e2). An in-plane retardation ReP1(?) of the phase difference plate P1 at a wavelength ? nm and the in-plane retardation ReP2(?) of the phase difference plate P2 at the wavelength ? nm satisfy the following formulae (e4) and (e5): ReP1(550)>ReP2(550) (e4), and ReP1(400)/ReP1(700)<ReP2(400)/ReP2(700) (e5).

DISPLAY DEVICE

A display device is provided. A liquid crystal compensation layer is disposed on each of a first polarizer and a second polarizer. The liquid crystal compensation layers adjust compensation values through refractive index differences and thicknesses of liquid crystal molecules, so adjustment ranges are large and limitations are few, and the liquid crystal compensation layers can be matched with high phase differences of a liquid crystal display panel. Opposite two sides of the liquid crystal display panel are arranged symmetrically, number and thickness of film layers on each side is the same, so that a situation of bending due to different stress on the two sides of the liquid crystal display panel can be prevented.

DISPLAY DEVICE

The present application discloses a display device. Based on that a birefringence of a liquid crystal molecule is symmetrically compensated by using an optical compensation layer, the display device of the present provides a liquid crystal compensation layer on a first polarizer, and the liquid crystal compensation layer adjusts a compensation value through a refractive index difference and a thickness of the liquid crystal molecule. Therefore, the compensation value may match a high phase difference of the display device due to a large adjustment range and a little limitation, thereby improving a dark side-view leakage of the display device, improving a contrast of the display device, and improving an image quality.

Phase difference film, circularly polarizing plate, and display device

A phase difference film includes a small change in tint when the film is applied to a display device as a circularly polarizing plate in combination with a polarizer display device being observed from an oblique direction at all azimuthal angles. The film includes optically anisotropic layers X, Y, and Z in this order, in which layer X is an A-plate, and layers Y and Z are formed by fixing a first and second liquid crystal compound, respectively, twist-aligned along a helical axis extending in a thickness direction, one of the first and second liquid crystal compounds are rod-like liquid crystal compounds, the other first and the second liquid crystal compounds are disk-like liquid crystal compounds, and an in-plane slow axis of layer X is parallel to an in-plane slow axis on a surface of layer Y on layer X side.