Film for PDP filter, PDP filter comprising the same and plasma display panel produced by using the PDP filter

A plasma and optical filter technology, applied in the field of optical filters, can solve the problems of light transmittance change, diimmonium dye differential thermal stability, etc., achieve good durability and thermal stability, and simplify the method of film formation , the effect of high light transmittance

Inactive Publication Date: 2007-02-07
LG CHEM LTD
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar to U.S. Patent No. 6,117,370, the poor thermal stability of diimonium dyes still causes large changes in light transmittance

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
  • Film for PDP filter, PDP filter comprising the same and plasma display panel produced by using the PDP filter
  • Film for PDP filter, PDP filter comprising the same and plasma display panel produced by using the PDP filter
  • Film for PDP filter, PDP filter comprising the same and plasma display panel produced by using the PDP filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] Formation of NIR absorbing film

[0101] 27 g of a SAN copolymer (available from LG Chemical) having a weight average molecular weight of 140,000, a Tg of 105° C., and an acrylonitrile content of 27 wt % was dissolved in 73 g of THF to prepare a 27% binder solution. Then, 0.4 g of diimonium salt dye (ADS 1065A) was added to 100 g of the binder solution and stirred to prepare a mixed solution. The mixed solution was coated on a transparent PET film by a bar coating method to a dry coating thickness of 15□. The coating was dried at 120° C. for 5 minutes to prepare a NIR absorbing film. Table 1 shows changes in light transmittance before and after the film was left at 80° C. for 500 hours and at 60° C. and a relative humidity (RH) of 90% for 500 hours. Figure 4 and Figure 5 are the transmission spectra obtained before and after each durability test. The durability of the film for the PDP filter was evaluated by measuring the change in light transmittance of the dye-c...

Embodiment 2

[0103] Formation of NIR absorbing film

[0104] 30 g of a SAN copolymer (available from LG Chemical) having a weight average molecular weight of 140,000, a Tg of 105° C. and an acrylonitrile content of 27 wt % was dissolved in 70 g of MEK to prepare a 30% binder solution. Then, 0.4 g of diimonium salt dye (ADS 1065A) was added to 100 g of the binder solution and stirred to prepare a mixed solution. The mixed solution was coated on a transparent PET film by a bar coating method to a dry coating thickness of 15□. The coating was dried at 120° C. for 5 minutes to prepare a NIR absorbing film. Table 1 shows changes in light transmittance obtained before and after the film was left at 80° C. for 500 hours and at 60° C. and 90% RH for 500 hours. Figure 6 and Figure 7 are the transmission spectra obtained before and after each durability test.

[0105] Visible light range (nm)

Embodiment 3

[0107] Formation of NIR absorbing film

[0108] 27 g of a SAN copolymer (available from LG Chemical) having a weight average molecular weight of 140,000, a Tg of 105° C., and an acrylonitrile content of 27 wt % was dissolved in 73 g of THF to prepare a 27% binder solution. Then, 0.4 g of diimonium salt dye (ADS 1065A) and 0.25 g of dithiol-based nickel complex dye (V-63, purchased from Epoin) were added to 100 g of the binder solution and stirred to prepare get a mixed solution. The mixed solution was coated on a transparent PET film by a bar coating method to a dry coating thickness of 15□. The coating was dried at 120° C. for 5 minutes to prepare a NIR absorbing film. Table 2 shows changes in light transmittance before and after the film was left at 80° C. for 500 hours and at 60° C. and 90% RH for 500 hours. Figure 8 and Figure 9 are the transmission spectra obtained before and after each durability test.

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

PropertyMeasurementUnit
absorption wavelengthaaaaaaaaaa
Login to view more

Abstract

A film for a PDP filter including a binder resin composed of a styrene-acrylonitrile (SAN) copolymer, and a dye selected from the group consisting of a near infrared ray (NIR) absorbing dye, a Neon cut dye, a color control dye, and a mixture thereof is provided. The film for a PDP filter includes the SAN copolymer as a binder resin, and thus a change in transmittance is little under a high-temperature condition or a high-temperature and high-humidity condition, resulting in good durability and thermal stability and high transmittance in a visible light range. Further, since a general organic solvent can be used in the formation of the film, environmental pollution is reduced and the removal of a poisonous solvent is not required, thereby simplifying a process of forming the film.

Description

technical field [0001] The present invention relates to an optical filter for a plasma display panel (PDP), more particularly, the present invention relates to a film for a PDP optical filter having almost constant light transmittance due to good thermal stability, A PDP filter including the film and a PDP manufactured using the PDP filter. Background technique [0002] Among flat panel display devices, a plasma display panel (PDP) is attracting attention as a large panel. figure 1 For the perspective view of the PDP, Figure 27 is a schematic diagram of the PDP components of the PDP. PDP modules are manufactured by forming barriers on the lower plate, forming layers of red, green, and blue phosphors between the barriers, and placing the upper plate on the lower plate so that the electrodes on the lower plate are parallel to and facing the electrodes on the upper plate , and inject discharge gas such as Ne, Ar, Xe, etc. into the space between the upper plate and the lower...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01J17/49H01J11/44
CPCG02B5/22G02B5/223H01J9/205H01J11/44H01J2211/448
Inventor 朴相炫李渊槿
Owner LG CHEM LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap