In a liquid crystal apparatus, a second substrate is provided with an optical compensation layer having inclined surfaces at a first substrate side. A liquid crystal layer includes liquid crystal molecules having negative dielectric anisotropy. While no voltage is applied to the liquid crystal layer, an angle between a long axis direction of the liquid crystal molecules and each of the inclined surfaces is set to an angle smaller than 90.

Disclosed are a light blocking device, a method of manufacturing the same, and a transparent display device including the same, which transmit or block light by using a polymer dispersed liquid crystal (PDLC) layer. The light blocking device includes a first substrate and a second substrate facing each other, a first electrode on the first substrate, a second electrode on the second substrate, and a PDLC layer between the first electrode and the second electrode. The PDLC layer includes a droplet including liquid crystals and dichroic dyes, and the liquid crystals and the dichroic dyes are twisted with each other and aligned.

A liquid crystal display device includes a first substrate, a second substrate disposed on a viewer side relative to the first substrate, a liquid crystal layer provided between the first substrate and the second substrate, a polarizer disposed on the viewer side relative to the liquid crystal layer, and a phase difference layer disposed between the polarizer and the liquid crystal layer, and also includes a plurality of pixels arrayed in a matrix shape. The first substrate includes a reflective layer that reflects light, a first electrode and a second electrode that can generate a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film in contact with the liquid crystal layer. The second substrate includes a second horizontal alignment film in contact with the liquid crystal layer. The liquid crystal layer takes a twist alignment when no voltage is applied.

An electrically controlled birefringence liquid crystal display device performs a normally black display. The display device includes a liquid crystal display panel including a liquid crystal layer and a reflective portion to reflect light that is incident through a display surface of the liquid crystal display panel and that passes through the liquid crystal layer, a first polarizing plate on the display surface, and a half-wavelength plate between the liquid crystal display panel and the first polarizing plate. A phase difference ?nd?1 of the liquid crystal layer is less than a half of a phase difference ?nd?2 of the half-wavelength plate. The phase difference ?nd?2 of the half-wavelength plate indicates a positively dispersive wavelength, and a low axis of the half-wavelength plate intersects with an orientation axis of liquid crystal molecules in the liquid crystal layer under no electric field being applied. The liquid crystal layer has a birefringence index ?n indicating a positively dispersive wavelength.

A method for repairing a white defect of a LCD panel includes providing a substrate, the substrate defining pixel areas which themselves comprise a base, a first metal layer, a first insulating layer, a semi-conductor layer, an ohmic contact layer, a source electrode, a drain electrode, and a second insulating layer; forming a through hole by laser in the second insulating layer, the through hole extending through the second insulating layer and separating the drain electrode into two spaced parts; forming a third insulating layer to cover the first conductive layers, the second insulating layer and the though hole and forming a second conductive layer by laser on the third insulating layer to couple the first conductive layer to the second conductive layer.

A transmissive-type liquid crystal device of a normally black mode, an image processing circuit configured to output an applied voltage to be applied to a liquid crystal element, and a phase difference compensation element configured to cancel a phase difference occurring inside of the liquid crystal element. The phase difference compensation element is disposed such that, in relative transmittance-voltage characteristics representing a relationship between an applied voltage and an intensity of light emitted from the liquid crystal element, the intensity of the light emitted from the liquid crystal element is minimized with an applied voltage corresponding to a point belonging to an area Z having a large change in inclination of a tangent line disposed between areas X and Y exhibiting a small change in inclination of a tangent line touching each of points on a light intensity-voltage characteristic corresponding to each of applied voltages at every predefined voltage interval.

According to one embodiment, a display device includes a first polarizing element, a second polarizing element, and a light-modulating layer located between the first polarizing element and the second polarizing element, each of the first polarizing element and the second polarizing element includes a guest-host liquid crystal layer and a control electrode in an active area including at least one sub-area, the guest-host liquid crystal layer including dye having anisotropy in absorptive power for visible light, the control electrode controlling an alignment direction of the dye in the sub-area.

A display device including a display panel. The display panel includes a display region and a non-display region surrounding the display region. The display region includes a first pixel region, the non-display region includes a second pixel region, and the first pixel region and the second pixel region together form a pixel region. The first pixel region and the second pixel region each includes a plurality of pixels. The display device also includes a cover window disposed on a light-emitting side of the display panel. The cover window includes a viewable region and a light-shielding region surrounding the viewable region, and the light-shielding region is disposed with a light-shielding material. The area of the pixel region is larger than the area of the viewable region, the first pixel region is arranged opposite to the viewable region, and the second pixel region is arranged opposite to the light-shielding region.

A display apparatus includes a display panel including a switching element connected to a data line and a gate line, a pixel electrode connected to the switching element, a common electrode facing the pixel electrode and a liquid crystal layer disposed between the pixel electrode and the common electrode. The display apparatus further includes a data driving circuit configured to convert image data to a data voltage. The display apparatus further includes a driving voltage generator configured to generate a common voltage, in response to a voltage control signal from a timing controller, to the common electrode and the data driving circuit, which is configured to output the common voltage to the pixel electrode during an initial setting period when power is turned on to the display apparatus.

The present invention provides a display device that is excellent in designability and allows a reflection color in the non-display state to be less likely to appear differently at different viewing positions. The display device includes, in the following order: a display panel capable of switching between a display mode of emitting display light and a non-display mode of not emitting display light; a /4 retardation layer; a circularly polarized light ray reflection layer; and a light scattering layer capable of switching between a light scattering mode of scattering incident light and a light transmitting mode of transmitting incident light. The circularly polarized light ray reflection layer preferably contains a cholesteric liquid crystal.