LIQUID CRYSTAL BASED OPTOELECTRONIC DEVICE

• US 20150253627A1
• Filed: 01/21/2015
• Published: 09/10/2015
• Est. Priority Date: 03/10/2014
• Status: Active Grant

• Current Assignee: National Tsing Hua University
• Original Assignee: National Tsing Hua University
• Inventors: PAN, Ci-Ling, YANG, Chan-Shan, TANG, Tsung-Ta, PAN, Ru-Pin, YU, Pei-Chen
• Granted Patent: US 9,810,947 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133707 Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making

Abstract

The invention provides a liquid crystal based optoelectronic device, including an upper substrate and a lower substrate, a liquid crystal layer sandwiched between the upper substrate and the lower substrate, and a pair of indium tin oxide nano-whisker layers formed on the inner surfaces of the upper substrate and the lower substrate, wherein the indium tin oxide nano-whisker layer is used as an alignment layer for aligning liquid crystal molecules in the liquid crystal layer.

Claims

1. A liquid crystal based optoelectronic device, comprising

an upper substrate and a lower substrate,

a liquid crystal layer sandwiched between the upper substrate and the lower substrate, and

a pair of indium-tin-oxide (ITO) nano-whisker layers formed on the inner surfaces of the upper substrate and the lower substrate,

wherein the ITO nano-whisker layer is used as an alignment layer for aligning liquid crystal molecules in the liquid crystal layer.

2. The liquid crystal based optoelectronic device as claimed in claim 1, wherein the ITO nano-whisker layer has a plurality of whiskers, and the plurality of whiskers extend in a first direction in the plane of the upper substrate or the lower substrate as a whole so as to align the liquid crystal molecules in a second direction which is perpendicular to the first direction.

3. The liquid crystal based optoelectronic device as claimed in claim 1, wherein the ITO nano-whisker layer is used as a transparent electrode for driving the tilt direction of the liquid crystal molecules.

4. The liquid crystal based optoelectronic device as claimed in claim 3, wherein the liquid crystal based optoelectronic device is utilized in the terahertz band (0.1˜

10 THz).

5. The liquid crystal based optoelectronic device as claimed in claim 1, wherein the liquid crystal based optoelectronic device is utilized in the visible light band.

6. The liquid crystal based optoelectronic device as claimed in claim 5, wherein the liquid crystal based optoelectronic device is utilized in a display apparatus.

7. The liquid crystal based optoelectronic device as claimed in claim 1, wherein the thickness of the ITO nano-whisker layer is 600 nm˜

1400 nm.

8. The liquid crystal based optoelectronic device as claimed in claim 1, wherein the ITO nano-whisker layer is formed by glancing angle deposition, wherein an angle between a vapor flux direction and the normal direction of the substrate where the vapor is deposited is 40°

˜

80°

.