Lg Chem, Ltd

Byung Mook Kim

Sang Choll Han

Dae Hee Lee

Youngjin Kim

Seong Min Park

Sangcholl Han

Sunghak Bae

Bu Gon Shin

Jae Jin Kim

Jin Suk Song

Dae Han Seo

Min Soo Song

Jinkyu Lee

Mingoo Kim

Kyungki Hong

Jeehyon Min

Miyeon Oh

Hong Shik Shim

Bum Woo Lee

Do Ki Chang

Sung Hak Bae

The present disclosure relates to an air-permeable light guide plate and an air purifying filter including the same, wherein the air-permeable light guide plate according to an embodiment of the present disclosure includes a light source located on at least one side surface, and a flat type plate through which light generated from the light source passes, wherein light is emitted in a direction perpendicular to a flat plate of the flat type plate, and the flat type plate has a plurality of openings.

Light guide plate having air permeability and air purifying filter including the same

An embodiment according to an aspect of the present disclosure provides a device for manufacturing a display lens, a method for manufacturing a display lens using the device, and a head-mounted display device including the display lens manufactured thereby. The device for manufacturing a display lens including a holographic optical element formed by recording a hologram on a photosensitive substrate, in which a substrate is coated with a photosensitive material, through irradiation of laser beams includes: a first laser light incidence unit configured to cause first laser light, converging along an irradiation direction, to be incident on one surface of the photosensitive substrate; and a second laser light incidence unit configured to cause second laser light, diverging at a plurality of points along an irradiation direction, to be incident on the other surface of the photosensitive substrate.

Display lens manufacturing apparatus and method, and head-mounted display device comprising display lens manufactured thereby

The present specification relates to a viewing angle compensation film, a polarizing plate including the same, and a display device including the same, and the viewing angle compensation film includes: a pattern layer; and a low refractive layer, in which a difference in refractive index between the pattern layer and the low refractive layer is 0.02 to 0.4, the pattern layer includes: a first surface which comprises a flat surface; and a second surface which faces the first surface and includes multiple protruding portions, each of the protruding portions includes a first inclined surface and a second inclined surface, an angle &#x3b8;between the first surface and the first inclined surface or a surface extending from the first inclined surface and an angle &#x3b8;between the first surface and the second inclined surface or a surface extending from the second inclined surface are different from each other, and an angle &#x3b8; between the first inclined surface or the surface extending from the first inclined surface and the second inclined surface or the surface extending from the second inclined surface is 20&#xb0; to 60&#xb0;, such that there is an effect of improving a contrast ratio and a viewing angle.

Viewing angle compensation film, polarizing plate comprising same, and display device comprising same

The present specification relates to a film for compensating for a viewing angle, which comprises a base substrate; a pattern layer; and an optical layer, and in which the pattern layer has a first surface comprising a flat surface and a second surface facing the first surface, and the second surface comprises a plurality of protrusions comprising a curved surface, thereby improving a contrast ratio and a viewing angle and decreasing a color band phenomenon, and a polarizing plate comprising the same, and a display device comprising the same.

Viewing angle compensation film, polarizing plate including same, and display device including same

An optical isolation element comprising, sequentially: a light control film; a first optical path changing element; and a second optical path changing element. The optical isolation element has an excellent optical isolation ratio, and can be manufactured simply and at low cost. Such an optical isolation element can be applied, for example, to the fields of optical communication or laser optics, security and privacy protection, and members for brightness enhancement in displays or military products requiring hiding and covering, and the like.

Optical isolation element

An asymmetric transmission film including a body having a first surface and a second surface opposite to the first surface and a transmittance control member disposed in the body such that a forward transmittance of light passing in a direction from the first surface toward the second surface and a reverse transmittance of light passing in a direction from the second surface toward the first surface are different from each other.

Asymmetric transmission film

The present application relates to an optical isolation element which sequentially comprises a first optical path changing element, a light control film and a second optical path changing element. The optical isolation element has excellent forward transmittance, which may require no separate external force. The optical isolation element can be applied to various applications such as the field of optical communication or laser optics, the field of security or privacy protection, brightness enhancement of displays, or military hiding and covering.

Growing community of inventors

Daejeon, South Korea

Byung Mook Kim