The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
The use of a solution of a dichroic dye dissolved in a liquid crystal as a display is well known.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
100% of the total text.
Page 1 of 2
Displays Using Liquid Crystal Dyes
The use of a solution of a dichroic dye dissolved in a liquid crystal as a
display is well known.
We now propose combining the dye and the liquid crystal properties into one
molecule, thereby offering the following advantages: (1) eliminates the
compatibility problem encountered when doping a liquid crystalline host with a
non-liquid crystalline dye and (2) offers high contrast enhancement from dye
chromophores of low extinction coefficient (concentration effect). A class of
compounds which we have found to be dyes and which also are liquid crystals
are the 2,7 dialkoxyfluorenones whose structure is shown below.
where R is an alkyl group. These materials are light, stable, low melting liquid
crystals of applicability in direct-view optical displays.
As an example, where R=C(10)H(21), the compound, when put in a cell with
surface-treated electrodes, has been found to respond to an applied field by
Page 2 of 2
[This page contains 1 picture or other non-text object]