Unlock instant, AI-driven research and patent intelligence for your innovation.
Polarized sheet protective film and polarized sheet using said film and liquid crystal display device
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for polarizers and protective films, applied in optics, instruments, nonlinear optics, etc., which can solve problems such as degradation of LCD visibility, and achieve the effect of improving visibility, improving characteristics and appearance
Active Publication Date: 2006-06-07
KONICA MINOLTA OPTO
View PDF24 Cites 1 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0005] When the liquid crystal display device is used continuously for a long time, or when it is used continuously at high temperature, or under high temperature and high humidity, the deterioration of LCD visibility is inevitable
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1～11
[0183] (Manufacturing polarizer protective film by solution casting method)
[0184] When the cellulose triacetate film of the present invention having a desired dry film thickness of 40 μm is produced by the solution casting method, the dope is firstly prepared. That is, the following compounded composition in which triacetyl cellulose was dissolved in a solvent was put into an airtight container, and the prepared dope was dissolved while stirring, and the prepared dope was filtered with filter paper.
[0185] (mastic composition)
[0186] 100 parts by weight of cellulose triacetate with an acetyl substitution degree of 2.88
[0233] (Manufacture of polarizer protective film by melt casting method)
[0234] The cellulose triacetate film of the polarizer protective film of the present invention having a target dry film thickness of 80 μm was produced by the melt casting film forming method.
[0235] 100 parts by weight of cellulose triacetate with an acetyl substitution degree of 2.88
[0242] Infrared absorber IR-2 (embodiment 12) 0.4 parts by weight
[0243] In Example 13, 0.3 parts by weight of IR-7 as an infrared absorber was used, and in Example 14, 0.2 parts by weight of IR-32 as an infrared absorber was used.
[0244] The mixture of the above-mentioned materials was mel...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Property
Measurement
Unit
transmittivity
aaaaa
aaaaa
refractive index
aaaaa
aaaaa
Login to View More
Abstract
The present invention provides a polarizing plate protective film, which has a transmittance of 10% or less at a wavelength of 380 nm and a transmittance of 91% or more at a wavelength of 450 nm. The characteristic is that at least one of the following conditions A, B and C is satisfied: Condition A: The transmittance of the above-mentioned polarizing plate protective film after 200 hours in an environment with a temperature of 80°C and a humidity of 90% RH. The transmittance relative to the above-mentioned wavelengths varies between 80% and 120% respectively; Condition B: After the above-mentioned polarizer protective film has been exposed to a dry environment at a temperature of 105°C for 200 hours, the transmittance relative to the above-mentioned wavelengths The transmittance ranges from 90% to 110% respectively; Condition C: The transmittance of the above-mentioned polarizing plate protective film after 200 hours in an environment with a temperature of -50°C relative to the transmittance of the above-mentioned wavelength , their variation ranges are between 90% and 110% respectively.
Description
technical field [0001] The present invention relates to a polarizing plate protective film used as a protective film for a polarizing plate of a liquid crystaldisplay device (LCD), and a polarizing plate using the film. Background technique [0002] In recent years, liquid crystal display devices (LCDs) have been increasingly used in liquid crystal displays such as TVs, personal computers, and mobile phones because of space saving and energy saving. In particular, with the progress of larger screen size and higher image quality of TV, higher quality of liquid crystal display devices is required due to the expansion, generalization and diversification of use places, and further improvement of display function and visibility function is required. [0003] It has been found that the quality of liquid crystal displays is influenced by the characteristics of polarizers, one of the components of liquid crystal displays. The stabilization of the polarization characteristics of th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More