公开(公告)号：US12123255B2

公开(公告)日：2024-10-22

申请号：US18034714

申请日：2021-11-01

Applicant: KENT STATE UNIVERSITY

Inventor： Yingfei Jiang ,  Deng-Ke Yang ,  Yunho Shin

IPC: G02F1/137 ,  E06B9/24

CPC classification number: E06B9/24 ,  G02F1/13712 ,  G02F1/13737 ,  E06B2009/2464 ,  G02F2202/043

Abstract: A dual-mode switchable liquid-crystal window can control both radiant energy flow and privacy. The modes are selected by using different voltage frequencies. A dichroic dye is doped to enable modulation of transmission of the window. In the absence of an applied voltage, the window is transparent without haze. When a high-frequency (e.g., 1 kHz) voltage is applied, the liquid crystal and doped dye molecules inside the window reorient uniformly under dielectric interactions. The material becomes optically absorbing. The transmittance decreases, but the haze does not change. In this mode, the window can control radiant energy flow through the window. When a low-frequency (50 Hz) voltage is applied, the liquid crystal and doped dye molecules are switched into a micron-sized polydomain structure under flexoelectric interactions. The material becomes optically scattering and absorbing. The scenery behind the window is blocked. In this mode, privacy can be controlled. This dual-mode switchable window is suitable for architectural and automobile windows.

公开(公告)号：US12007639B2

公开(公告)日：2024-06-11

申请号：US18156587

申请日：2023-01-19

Applicant: Apple Inc.

Inventor： Yuan Chen ,  Donald R. Monroe ,  Peter F. Masschelein ,  Stephen B. Lynch ,  Xiaokai Li ,  Zhibing Ge

IPC: G02F1/1333 ,  B60J3/00 ,  B60J3/04 ,  G02F1/01 ,  G02F1/1334 ,  G02F1/137

CPC classification number: G02F1/1334 ,  B60J3/007 ,  B60J3/04 ,  G02F1/0121 ,  G02F1/133365 ,  G02F1/13725 ,  G02F1/13737 ,  G02F2203/01

Abstract: A system such as a vehicle, building, or electronic device system may have a support structure with one or more windows. The support structure and window may separate an interior region within the system from a surrounding exterior region. Control circuitry may receive input such as user input and may adjust an adjustable layer in the window based on the input. The adjustable layer may have a polymer matrix layer with embedded cells. The cells may include intermixed guest-host liquid crystal cells and liquid crystal cells. The guest-host liquid crystal cells and liquid crystal cells may have different liquid crystal materials and/or different sizes that allow the guest-host liquid crystal cells and liquid crystal cells to electrically switch states at different respective threshold voltages. Based on the user input or other input the control circuitry can adjust a drive signal across the adjustable layer to change light transmittance and haze.

公开(公告)号：US11952528B2

公开(公告)日：2024-04-09

申请号：US17415953

申请日：2019-12-17

Applicant: Merck Patent GmbH

Inventor： Henriette Bakker ,  Ties De Jong ,  Michael Junge ,  Andreas Beyer ,  Jasper Van Den Muijsenberg

IPC: C09K19/34 ,  C09K19/58 ,  G02F1/133 ,  G02F1/1347 ,  G02F1/137 ,  C09K19/04

CPC classification number: C09K19/3497 ,  C09K19/586 ,  G02F1/13306 ,  G02F1/1347 ,  G02F1/13737 ,  C09K2019/0448 ,  C09K2219/13

Abstract: The present invention relates to an assembly of switching layers for dimming and scattering of light and to window elements comprising the arrangement of switching layers.

公开(公告)号：US20190250465A1

公开(公告)日：2019-08-15

申请号：US16342085

申请日：2017-10-18

Applicant: LG Chem, Ltd.

Inventor： Jung Woon Kim ,  Su Young Ryu ,  Moon Soo Park ,  Byoung Kun Jeon ,  Sin Young Kim ,  Ji Youn Lee

IPC: G02F1/1337 ,  G02F1/1339 ,  G02F1/137

CPC classification number: G02F1/133711 ,  G02B5/30 ,  G02B26/02 ,  G02F1/133788 ,  G02F1/13392 ,  G02F1/13725 ,  G02F1/13737 ,  G02F2001/133715 ,  G02F2001/133726 ,  G02F2001/13373 ,  G02F2001/133738 ,  G02F2001/133742 ,  G02F2001/133773 ,  G02F2203/01

Abstract: A transmittance-variable film and a use thereof, where the transmittance-variable film can control pretilt of a liquid crystal interface by applying a liquid crystal alignment film containing splay oriented liquid crystal molecules, and can vertically and horizontally orient a liquid crystal layer or a liquid crystal interface according to an average tilt angle of the liquid crystal alignment film to ensure uniformity of driving and fast response speed. In addition, by applying a liquid crystal alignment film, the transmittance-variable film can be implemented in various modes with a simple coating-drying-curing method excluding the rubbing process by controlling an arrangement of liquid crystal molecules in a liquid crystal alignment film other than the pretilt control method using the conventional rubbing method.

公开(公告)号：US20180259804A1

公开(公告)日：2018-09-13

申请号：US15760577

申请日：2016-09-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jun Cheol BAE ,  Hyun Min SONG ,  Jong Hyun RYU ,  Ji Su JUNG ,  Yong Ho KIM ,  Hong Suk KIM ,  Byung Hwa SEO ,  Tatsuhiro OTSUKA

IPC: G02F1/137 ,  G02F1/133 ,  E06B9/24 ,  B60J3/04

CPC classification number: G02F1/13718 ,  B60J3/04 ,  E06B9/24 ,  E06B2009/2417 ,  E06B2009/2464 ,  G02F1/13306 ,  G02F1/13318 ,  G02F1/137 ,  G02F1/13737 ,  G02F2001/13478 ,  G02F2202/04 ,  G02F2202/36 ,  G02F2203/48 ,  G06F3/01 ,  H04M1/725

Abstract: The present disclosure is directed to providing to a smart window system capable of controlling a state of a display element (e.g., at least one of transparency, color, pattern, gradation degree, and displayed information) through various kinds of input devices and a control method thereof.In accordance with one aspect of the present disclosure, a smart window system may include a display element; an input device configured to receive a control command for the display element; and a controller configured to determine at least one of transparency, color, pattern, and gradation of the display element and information displayed on the display element on the basis of the control command.

公开(公告)号：US20180149908A1

公开(公告)日：2018-05-31

申请号：US15825897

申请日：2017-11-29

Applicant: LG Display Co., Ltd.

Inventor： Sunyoung PARK ,  Kihan KIM ,  Choonghyo KIM

IPC: G02F1/1335 ,  G02F1/1334 ,  H01L27/32 ,  H01L51/52 ,  G09G3/36

CPC classification number: G02F1/133502 ,  G02F1/13306 ,  G02F1/1334 ,  G02F1/13718 ,  G02F1/13737 ,  G02F2201/44 ,  G02F2202/06 ,  G02F2203/01 ,  G02F2203/64 ,  G09G3/3696 ,  G09G2310/08 ,  G09G2330/021 ,  H01L27/3232 ,  H01L27/3244 ,  H01L51/5281

Abstract: 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.

公开(公告)号：US20170371186A1

公开(公告)日：2017-12-28

申请号：US15628923

申请日：2017-06-21

Applicant: Merck Patent GmbH

Inventor： Michael JUNGE ,  Andreas BEYER ,  Mila FISCHER

IPC: G02F1/137 ,  E06B9/24 ,  G02F1/1337 ,  G02F1/1335

CPC classification number: G02F1/137 ,  E06B9/24 ,  E06B2009/2417 ,  E06B2009/2464 ,  E06B2009/247 ,  G02F1/133528 ,  G02F1/1337 ,  G02F1/13737 ,  G02F2001/133531 ,  G02F2202/043 ,  G02F2202/046

Abstract: An optical switching device comprising a polarisation layer and a switching layer which comprises a liquid-crystalline material and a dye compound. Use of the optical switching device for the regulation of the passage of light through an area element. A window element which has the optical switching device therein.

公开(公告)号：US20150146145A1

公开(公告)日：2015-05-28

申请号：US14241049

申请日：2013-12-02

Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.

Inventor： Xinhui Zhong

IPC: G02F1/1335 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1339

CPC classification number: G02F1/133514 ,  G02F1/1339 ,  G02F1/1362 ,  G02F1/13737 ,  G02F2001/13706

Abstract: The present invention provides a color liquid crystal display panel and a manufacturing method thereof. The color liquid crystal display panel includes: a first substrate (2), a second substrate (3), and dye-doped liquid crystal layers (4) hermetically sealed between the first substrate (2) and the second substrate (3). The dye-doped liquid crystal layers (4) each include a liquid crystal material, a chiral dopant, and at least one dichroic dye. Each of the dichroic dyes absorbs a light of a predetermined wavelength range. The color liquid crystal display panel and the manufacturing method thereof according to the present invention add at least one dichroic dye in a liquid crystal material so as to use selective absorbability of the dichroic dye with respect to visible lights to adjust light intensity and also to achieve color displaying through collaboration of a color filter and the dichroic dye, whereby there is no need to include a conventionally used polarizer so as to reduce the manufacturing cost of the color liquid crystal display panel, also reduce the requirement for backlighting brightness, enhance light transmittal and optical efficiency, and thus lower down energy consumption of the operation of a color liquid crystal display.

Abstract translation: 本发明提供一种彩色液晶显示面板及其制造方法。 彩色液晶显示面板包括：密封在第一基板（2）和第二基板（3）之间的第一基板（2），第二基板（3）和染料掺杂液晶层（4）。 染料掺杂液晶层（4）各自包括液晶材料，手性掺杂剂和至少一种二色性染料。 每个二色性染料吸收预定波长范围的光。 根据本发明的彩色液晶显示面板及其制造方法在液晶材料中添加至少一种二色性染料，以便使用二色性染料相对于可见光的选择吸收性来调节光强度并且还实现 通过彩色滤光片和二色性染料的协同进行彩色显示，由此不需要包括常规使用的偏光片，从而降低彩色液晶显示面板的制造成本，同时降低对背光亮度的要求，增强光透射 和光学效率，从而降低彩色液晶显示器的操作的能量消耗。

公开(公告)号：US20130258252A1

公开(公告)日：2013-10-03

申请号：US13489473

申请日：2012-06-06

Applicant: Chia-sheng Hsieh ,  Jan-tien Lien ,  Chun-wei Su

Inventor： Chia-sheng Hsieh ,  Jan-tien Lien ,  Chun-wei Su

IPC: G02F1/1334 ,  H01J9/20

CPC classification number: G02F1/13737 ,  G02F2001/13345 ,  G02F2001/13775

Abstract: The present invention discloses a transparent liquid crystal display device and manufacturing method thereof. By adding dichroic dyes and the dichroic dyes having characteristic of rotating with liquid crystal materials, light absorption ability of polymer network liquid crystals is increased. The present invention is capable of solving a problem which a dark state is not sufficiently dark, thus enhances contrast performance of the transparent liquid crystal display device.

Abstract translation: 本发明公开了一种透明液晶显示装置及其制造方法。 通过添加二色性染料和具有用液晶材料旋转的特征的二色性染料，聚合物网络液晶的光吸收能力增加。 本发明能够解决黑暗状态不够暗的问题，从而提高透明液晶显示装置的对比度性能。

公开(公告)号：US20050083564A1

公开(公告)日：2005-04-21

申请号：US10975173

申请日：2004-10-28

Applicant: Prakash Mallya ,  Yi-Hung Chiao ,  David Edwards ,  Kal Li ,  Xin-Jiu Wang ,  Sriram Venkatasanthanam ,  Nagarajan Srivatsan ,  Pradeep Iyer

Inventor： Prakash Mallya ,  Yi-Hung Chiao ,  David Edwards ,  Kal Li ,  Xin-Jiu Wang ,  Sriram Venkatasanthanam ,  Nagarajan Srivatsan ,  Pradeep Iyer

IPC: G02F1/139 ,  G02B20060101 ,  G02B26/00 ,  G02F1/01 ,  G02F1/03 ,  G02F1/07 ,  G02F1/1333 ,  G02F1/1334 ,  G02F1/1345 ,  G02F1/137

CPC classification number: G02F1/13718 ,  G02F1/1334 ,  G02F1/13737 ,  G02F2201/086 ,  G02F2201/30 ,  G02F2201/50 ,  G02F2201/501 ,  G02F2202/026 ,  G02F2202/04

Abstract: The present invention is directed to an electrically switchable laminate construction for applications including smart windows, and other uses and applications in which light management is desired. The electro-optical laminate construction has scattering and transparent modes of operation for dynamically controlling electromagnetic radiation flow.

Abstract translation: 本发明涉及一种用于包括智能窗户以及期望光管理的其它用途和应用的应用的可电切换层压结构。 电光层压结构具有散射和透明的操作模式，用于动态控制电磁辐射流。