Lg Display Co., Ltd.

Moon Sun Lee

Ji Young Ahn

Ki Han Kim

Pu Reum Kim

Seok Won Ji

Hyunjin An

YoungHoon Noh

MiRyn Seong

A light shielding apparatus that may transmit or shield light by using a plurality of PDLC layers, a method of fabricating the light shielding apparatus, and a transparent display device including the light shielding apparatus are discussed. The light shielding apparatus can include first and second substrates facing each other; a first electrode on the first substrate; a second electrode on the second substrate; and first and second polymer dispersed liquid crystal layers between the first electrode and the second electrode, wherein the first polymer dispersed liquid crystal layer includes first droplets having first liquid crystals, and the second polymer dispersed liquid crystal layer includes second droplets having second liquid crystals and first dichroic dyes.

Light shielding apparatus, method of fabricating the same, and transparent display device including the same

There are provided a light control device, a method for manufacturing the light control device, and a display device comprising the light control device. The light control device includes a first substrate and a second substrate facing each other, and a plurality of liquid crystal units between the first substrate and the second substrate, and the plurality of liquid crystal units includes a first liquid crystal unit including a droplet including a first liquid crystal and a polymer and a second liquid crystal unit which is disposed on or under the first liquid crystal unit and configured as a polymer networked liquid crystal (PNLC) including a second liquid crystal, a coloring member, and a network.

Light control device, method for manufacturing light control device and display device comprising light control device

There are provided a light control apparatus, a method for manufacturing the light control apparatus, and a display apparatus including the light control apparatus. The light control apparatus includes a first substrate and a second substrate facing each other, and a plurality of liquid crystal units between the first substrate and the second substrate, and the plurality of liquid crystal units includes a first liquid crystal unit having a droplet including a liquid crystal and a polymer and configured as a polymer dispersed liquid crystal (PDLC) and a second liquid crystal unit which is disposed on or under the first liquid crystal unit and configured as a guest-host liquid crystal (GHLC) including a liquid crystal and a coloring member.

Light control apparatus, manufacturing method for light control apparatus, and display apparatus comprising light control apparatus

A light controlling apparatus includes first and second substrates facing each other; a first electrode on the first substrate; a second electrode on the second substrate; and a liquid crystal layer between the first electrode and the second electrode, the liquid crystal layer including cholesteric liquid crystals, wherein the cholesteric liquid crystals have a focal conic state in a light shielding mode in case where no voltage is applied, and have a homeotropic state in a transparent mode in case where a voltage is applied.

Light controlling apparatus and transparent display including the same

A light controlling apparatus, a method of fabricating the light controlling apparatus, and a transparent display device including the light controlling apparatus are disclosed, in which light may be transmitted or shielded using a polymer dispersed liquid crystal (PDLC) layer and a guest-host liquid crystal (GHLC) layer, where the guest-host liquid crystal layer includes dichroic dyes. The light controlling apparatus includes first and second substrates facing each other; a first electrode on the first substrate; a second electrode on the second substrate; and a polymer dispersed liquid crystal (PDLC) layer and a guest-host liquid crystal (GHLC) layer between the first electrode and the second electrode, wherein the PDLC layer includes first liquid crystals having droplets, and the GHLC layer includes second liquid crystals and dichroic dyes.

Light controlling apparatus, method of fabricating the light controlling apparatus and transparent display device including the light controlling apparatus with transparent mode and light shielding mode

A light controlling apparatus includes a first electrode on a first substrate; a first alignment film on the first electrode; a second electrode on a second substrate facing the first substrate; a second alignment film on the second electrode; and a guest-host liquid crystal layer having cholesteric liquid crystals and dichroic dyes between the first and second alignment films. The first and second electrodes provide a vertical electric field, and at least one of the first and second electrodes provides a horizontal electric field. The cholesteric liquid crystals have a homeotropic state when an electric field in a first direction is applied to the guest-host liquid crystal layer to realize a transparent mode. The cholesteric liquid crystals have a focal conic state when an electric field in a second direction is applied to realize a light shielding mode. A same state is maintained when no electric field is applied.

A light-controlling device is provided. The light-controlling device includes a first substrate, a second substrate disposed opposite the first substrate, and a partition wall separating the first and second substrates to define a cell. An optical medium containing charged particles is disposed within the cell between the first and second substrates. A plurality of first electrodes is disposed on the first substrate, and a plurality of second electrodes is disposed on the second substrate to generate electrical field within the cell to move at least some of the charged particles. Each of the first electrodes has a first width and a first thickness, and each of the second electrodes has a second width and a second thickness. Each of the second electrodes is disposed at an interval of a third width such that the open region on the second substrate between the second electrodes corresponds to the first electrode on the first substrate.

Light-controlling device and method of manufacturing the same

The light-controlling device includes a first substrate, a second substrate and a partition wall separating the first and second substrates to define a cell. A light-adjustment medium containing a plurality of charged particles is disposed between the first and second substrates. One of the first electrode on the first substrate and the second electrode on the second substrate covers lesser area of the light-controlling device than the other electrode. The electrode covering lesser area of the light-controlling device may have grooved surface to increase the surface area without increasing the overall area of the light-controlling device covered by the electrode. Particle guidance member can be used to create a reservoir for holding increased amount of charged particles on the electrode covering lesser area of the light-controlling device.

Growing community of inventors

Sejong, South Korea

Moon Sun Lee