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Light control device and manufacturing method thereof

A light control, liquid crystal technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of reduced transparency, high energy consumption, no contrast, etc., and achieve the effect of improving transmittance, reducing energy consumption, and reducing the difference in refractive index

Active Publication Date: 2019-03-19
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In particular, LCDs can be implemented as transparent display devices using edge-type backlights, but transparent display devices employing LCDs show very low transmittance
Also, a transparent display device using an LCD has a disadvantage that transparency is lowered due to a polarizing plate used to realize black color, and external visibility is also negatively affected
[0009] In addition, transparent display devices using OLEDs have higher energy consumption than transparent display devices using LCDs
Moreover, it is difficult for transparent display devices to display pure black, but there is no contrast problem in dark environments
However, it has the disadvantage of reduced contrast in normal light environments

Method used

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  • Light control device and manufacturing method thereof
  • Light control device and manufacturing method thereof

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Embodiment approach

[0097] Polymer dispersed liquid crystals (PDLCs) and polymer network liquid crystals (PNLCs) used as light control devices of transparent display devices have different mixing ratios of monomers and liquid crystals. In general, PDLC has a higher percentage of monomer than PNLC. Thus, the PDLC realizes an initial light-shielding mode in the initial state of no voltage application, where incident light is scattered by randomly oriented liquid crystals and polymerized monomers. PDLCs also achieve a transparent mode by allowing incident light to be transmitted but not scattered when a voltage is applied and thereby vertically aligns the liquid crystals. If the PDLC is used as a light control device of a transparent display device, continuous application of voltage is required to achieve a transparent mode in standby.

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Abstract

The present invention relates to a light control device and a method of manufacturing the same. The light control device includes: a first electrode unit and a second electrode unit facing each other; and a liquid crystal unit located between the first electrode unit and the second electrode unit, the liquid crystal unit including: liquid crystal; having A network of a first polymer polymerized from a first monomer having a shape similar to said liquid crystal and a second polymer polymerized from a second monomer having a shape different from said first monomer; having said first polymer and the wall of the second polymer.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2014-0170655 filed on Dec. 2, 2014 and No. 10-2015-0087803 filed on Jun. 19, 2015 at the Korean Intellectual Property Office, which are hereby incorporated by reference The disclosure thereof is incorporated in its entirety. technical field [0003] The present invention relates to a light controlling apparatus and a method of manufacturing the same. Background technique [0004] In recent years, as the world enters the information age, the field of display devices for processing and displaying information has rapidly developed. Accordingly, various display devices have been developed and attracted attention. [0005] Specific examples of the display device include a liquid crystal display (LCD) device, a plasma display panel (PDP) device, a field emission display (FED) device, and an organic light emitting diode (OLED). Such displays exhibit exc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1334
CPCG02F1/1334G02F1/13345
Inventor 金纪汉安智煐李纹宣金普润池锡源
Owner LG DISPLAY CO LTD
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