US2007188854A1PendingUtilityA1

Front filter in plasma display panel

56
Individually held — no corporate assignee on recordPriority: Feb 12, 2003Filed: Apr 5, 2007Published: Aug 16, 2007
Est. expiryFeb 12, 2023(expired)· nominal 20-yr term from priority
Inventors:Kyung KimHong Rae ChaYoung Sung KimMyeong ChangByung Ryu
H01J 11/44H01J 2211/448H01J 11/12H01J 2211/446H01J 2211/442
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Claims

Abstract

Disclosed is a front filter attached to a front surface of a plasma display panel, the front filter comprising: an antireflection coating for preventing reflection of incident light from outside; an optical characteristic film for improving optical characteristics of incident light from the panel, by decreasing brightnesses of red (R) and green (G) rays and by increasing brightness of blue (B) rays; an EMI shielding film for shielding emission of electromagnetic wave; and an NIR blocking film for blocking near infrared rays emitted from the panel, wherein, transmittance of emitted light from the plasma display panel when the emitted light transmits the antireflection coating, the optical characteristic film, the EMI shielding film, and the NIR blocking film is determined in dependence of wavelength of the emitted light, and wherein transmittance of B rays at a wavelength of 454 nm is 50-80%, transmittance of G rays at a wavelength of 525 nm is 40-80%, transmittance of orange rays at a wavelength of 580-592 nm is 5-30%, transmittance of R rays at a wavelength of 610-650 nm is 50-80%, and transmittance of NIR at a wavelength of 850-950 nm is 1-10%.

Claims

exact text as granted — not AI-modified
1 - 10 . (canceled)  
   
   
       11 . A front filter, comprising: 
 an antireflection coating for preventing reflection of incident light from outside;    an optical characteristic layer for improving optical characteristics of incident light from a display panel;    an EMI shielding film for shielding emission of electromagnetic wave; and    an NIR blocking layer for blocking near infrared rays emitted from the display panel,    wherein light transmittance of emitted light from the display panel when the emitted light traverses the antireflection coating, the optical characteristic layer, the EMI shielding film, and the NIR blocking layer is determined independent of wavelength of the emitted light,    wherein light transmittances in whole wavelength ranges between green rays and red rays are less than light transmittances of the green rays and red rays.    
   
   
       12 . The front filter according to  claim 11 , wherein light transmittance at a wavelength range between blue rays and the green rays is less than light transmittances of the blue rays and green rays.  
   
   
       13 . The front filter according to  claim 11 , wherein light transmittance of blue rays at a wavelength of 454 nm is 50-80%.  
   
   
       14 . The front filter according to  claim 11 , wherein light transmittance of the green rays at a wavelength of 525 nm is 40-80%.  
   
   
       15 . The front filter according to  claim 11 , wherein light transmittance of orange rays at a wavelength of 580-592 nm is 5-30%.  
   
   
       16 . The front filter according to  claim 11 , wherein light transmittance of the red rays at a wavelength of 610-630 nm is 50-80%.  
   
   
       17 . The front filter according to  claim 11 , wherein light transmittance of near infrared rays at a wavelength of 850-950 nm is 1-10%.  
   
   
       18 . The front filter according to  claim 11 , wherein the front filter is attached to a front surface of the display panel.  
   
   
       19 . The front filter according to  claim 11 , further comprising a glass for supporting and protecting the front filer.  
   
   
       20 . A front filter, comprising: 
 an antireflection coating for preventing reflection of incident light from outside;    an optical characteristic layer for improving optical characteristics of incident light from a display panel;    an EMI shielding film for shielding emission of electromagnetic wave; and    an NIR blocking layer for blocking near infrared rays emitted from the display panel,    wherein light transmittance of emitted light from the display panel when the emitted light traverses the antireflection coating, the optical characteristic layer, the EMI shielding film, and the NIR blocking layer is determined independent of wavelength of the emitted light,    wherein light transmittance at a wavelength ranges between blue rays at a wavelength of 454 nm and green rays at a wavelength of 525 nm is less than light transmittances of the blue rays and green rays.    
   
   
       21 . The front filter according to  claim 20 , wherein light transmittance at a wavelength range between the green rays and red rays at a wavelength of 610-630 nm is less than light transmittances of the green rays and red rays.  
   
   
       22 . The front filter according to  claim 20 , wherein the light transmittance at a wavelength range between the blue rays at a wavelength of 454 nm and the green rays at a wavelength of 525 nm is less than the light transmittances of the blue rays and green rays by 1-20%.  
   
   
       23 . The front filter according to  claim 21 , wherein the light transmittance at a wavelength range between the green rays and red rays at a wavelength of 610-630 nm is less than the light transmittances of the green rays and red rays by 10-50%.  
   
   
       24 . The front filter according to  claim 20 , wherein the light transmittance of the green rays is 40-80%.  
   
   
       25 . The front filter according to  claim 20 , wherein light transmittance of the red rays at a wavelength of 610-630 nm is 50-80%.  
   
   
       26 . A front filter characterized of a light transmittance curve, wherein light transmittances in whole wavelength ranges between green rays and red rays are less than light transmittances of the green rays and red rays.  
   
   
       27 . The front filter according to  claim 26 , wherein light transmittance at a wavelength range between blue rays at a wavelength of 454 nm and the green rays at a wavelength of 525 nm is less than light transmittances of the blue rays and green rays.  
   
   
       28 . The front filter according to  claim 26 , wherein light transmittance of the green rays at a wavelength of 525 nm is 40-80%.  
   
   
       29 . The front filter according to  claim 26 , wherein light transmittance of the red ray at a wavelength of 610-630 nm is 50-80%.  
   
   
       30 . The front filter according to  claim 27 , light transmittance at a wavelength range between blue rays and green rays is less than light transmittances of the blue rays and green rays by 1-20%.

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