USRE44866EActiveUtility

Touch screen panel

87
Assignee: SAMSUNG DISPLAY CO LTDPriority: Jan 16, 2009Filed: May 10, 2013Granted: Apr 29, 2014
Est. expiryJan 16, 2029(~2.5 yrs left)· nominal 20-yr term from priority
Inventors:Sung-Ku KangTae-Hyeog JungChoon-Hyop LeeDong-Wook Kang
G06F 3/0412G06F 3/0446G02F 1/13338G06F 3/0445G06F 3/0416G06F 2203/04103
87
PatentIndex Score
7
Cited by
15
References
33
Claims

Abstract

A touch screen panel provided in an image display device. The touch screen panel includes: a transparent substrate; a plurality of first sensing patterns on the transparent substrate and coupled to each other along a first direction; a first insulating film on the first sensing patterns; a plurality of second sensing patterns on the first insulating film and coupled to each other along a second direction, the first and second sensing patterns being alternately arranged not to overlap with each other; and a second insulating film on the second sensing patterns, wherein the first insulating film and the second insulating film are composed of materials having different optical refractive indexes.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A touch screen panel comprising:
 a transparent substrate; 
 a plurality of first sensing patterns on the transparent substrate and coupled to each other along a first direction; 
 a first insulating film on the first sensing patterns; 
 a plurality of second sensing patterns on the first insulating film and coupled to each other along a second direction crossing the first direction, the second sensing patterns being alternately arranged with the first sensing patterns to not overlap with the first sensing patterns; and 
 a second insulating film on the second sensing patterns, 
 wherein the first insulating film and the second insulating film are composed of materials having different optical refractive indexes, and 
 wherein the first insulating film is composed of a material having an optical refractive index greater than that of the second insulating film. 
 
     
     
       2. The touch screen panel as claimed in  claim 1 , wherein the first sensing patterns are composed of ITO, and the first insulating film is composed of a material having an optical refractive index between about 1.7 and about 1.8. 
     
     
       3. The touch screen panel as claimed in  claim 2 , wherein the second sensing patterns are composed of a material having an optical refractive index between about 1.5 and about 1.65. 
     
     
       4. The touch screen panel as claimed in  claim 1 , wherein the second insulating film is composed of a material having an optical refractive index between the optical refractive index of air and the optical refractive index of the first insulating film. 
     
     
       5. The touch screen panel as claimed in  claim 1 , wherein the first sensing patterns are composed of ITO, and the first insulating film is composed of a transparent insulating material comprising between about 10 and about 30 wt % of SiO2 SiO 2 , between about 5 and about 30 wt % of ZrO2 ZrO 2 , and between about 1 and about 60 wt % of TiO2 TiO 2 . 
     
     
       6. The touch screen panel as claimed in  claim 5 , wherein the transparent insulating material of the first insulating film is composed of about 30 wt % of SiO2 SiO 2 , about 10 of wt % ZrO2 ZrO 2 , and about 60 wt % of TiO2 TiO 2 . 
     
     
       7. The touch screen panel as claimed in  claim 6 , wherein the second insulating film is composed of a transparent insulating material having a composition of about 20 wt % of SiO2 SiO 2 , about 10 wt % of ZrO2 ZrO 2 , about 50 wt % of TiO2 TiO 2 , and about 20 wt % of SiO2 SiO 2  filler. 
     
     
       8. The touch screen panel as claimed in  claim 1 , wherein the second insulating film has a surface roughness greater than that of the first insulating film. 
     
     
       9. A touch screen panel comprising:
 a transparent substrate;   a plurality of first sensing patterns on the transparent substrate and coupled to each other along a first direction;   a plurality of second sensing patterns on the transparent substrate and coupled to each other along a second direction crossing the first direction, the second sensing patterns being alternately arranged with the first sensing patterns to not overlap with the first sensing patterns;   a first insulating film on the transparent substrate; and   a second insulating film on the first insulating film,   wherein the first insulating film is between the second sensing patterns and the transparent substrate,   wherein the first insulating film and the second insulating film are composed of materials having different optical refractive indexes, and   wherein the first insulating film is composed of a material having an optical refractive index greater than that of the second insulating film.   
     
     
       10. The touch screen panel as claimed in claim 9, wherein the first sensing patterns are composed of ITO, and the first insulating film is composed of a material having an optical refractive index between about 1.7 and about 1.8. 
     
     
       11. The touch screen panel as claimed in claim 10, wherein the second sensing patterns are composed of a material having an optical refractive index between about 1.5 and about 1.65. 
     
     
       12. The touch screen panel as claimed in claim 9, wherein the second insulating film is composed of a material having an optical refractive index between the optical refractive index of air and the optical refractive index of the first insulating film. 
     
     
       13. The touch screen panel as claimed in claim 9, wherein the first sensing patterns are composed of ITO, and the first insulating film is composed of a transparent insulating material comprising between about 10 and about 30 wt % of SiO 2 , between about 5 and about 30 wt % of ZrO 2 , and between about 1 and about 60 wt % of TiO 2 . 
     
     
       14. The touch screen panel as claimed in claim 13, wherein the transparent insulating material of the first insulating film is composed of about 30 wt % of SiO 2 , about 10 of wt % ZrO 2 , and about 60 wt % of TiO 2 . 
     
     
       15. The touch screen panel as claimed in claim 14, wherein the second insulating film is composed of a transparent insulating material having a composition of about 20 wt % of SiO 2 , about 10 wt % of ZrO 2 , about 50 wt % of TiO 2 , and about 20 wt % of SiO 2  filler. 
     
     
       16. The touch screen panel as claimed in claim 9, wherein the second insulating film has a surface roughness greater than that of the first insulating film. 
     
     
       17. The touch screen panel as claimed in claim 9, wherein the first insulating film comprises at least one of SiO 2 , ZrO 2 , or TiO 2 . 
     
     
       18. The touch screen panel as claimed in claim 9, wherein the second insulating film comprises at least one of SiO 2 , ZrO 2 , or TiO 2 . 
     
     
       19. The touch screen panel as claimed in claim 9, wherein the first sensing patterns comprise a plurality of diamond shaped patterns connected by coupling members. 
     
     
       20. The touch screen panel as claimed in claim 9, wherein the second sensing patterns comprise a plurality of diamond shaped patterns connected by coupling members. 
     
     
       21. A touch screen panel comprising:
 a transparent substrate;   a plurality of first sensing patterns on the transparent substrate and coupled to each other along a first direction;   a first insulating film on the first sensing patterns; and   a second insulating film on the first insulating film,   wherein the first insulating film and the second insulating film are composed of materials having different optical refractive indexes, and   wherein the first insulating film is composed of a material having an optical refractive index greater than that of the second insulating film.   
     
     
       22. The touch screen panel as claimed in claim 21, wherein the first sensing patterns are composed of ITO, and the first insulating film is composed of a material having an optical refractive index between about 1.7 and about 1.8. 
     
     
       23. The touch screen panel as claimed in claim 21, wherein the second insulating film is composed of a material having an optical refractive index between the optical refractive index of air and the optical refractive index of the first insulating film. 
     
     
       24. The touch screen panel as claimed in claim 21, wherein the first sensing patterns are composed of ITO, and the first insulating film is composed of a transparent insulating material comprising between about 10 and about 30 wt % of SiO 2 , between about 5 and about 30 wt % of ZrO 2 , and between about 1 and about 60 wt % of TiO 2 . 
     
     
       25. The touch screen panel as claimed in claim 24, wherein the transparent insulating material of the first insulating film is composed of about 30 wt % of SiO 2 , about 10 of wt % ZrO 2 , and about 60 wt % of TiO 2 . 
     
     
       26. The touch screen panel as claimed in claim 25, wherein the second insulating film is composed of a transparent insulating material having a composition of about 20 wt % of SiO 2 , about 10 wt % of ZrO 2 , about 50 wt % of TiO 2 , and about 20 wt % of SiO 2  filler. 
     
     
       27. The touch screen panel as claimed in claim 21 further comprising, a plurality of second sensing patterns on the first insulating film and coupled to each other along a second direction crossing the first direction. 
     
     
       28. The touch screen panel as claimed in claim 27, wherein the second sensing patterns are composed of a material having an optical refractive index between about 1.5 and about 1.65. 
     
     
       29. The touch screen panel as claimed in claim 21, wherein the second insulating film has a surface roughness greater than that of the first insulating film. 
     
     
       30. The touch screen panel as claimed in claim 21, wherein the first insulating film comprises at least one of SiO 2 , ZrO 2 , or TiO 2 . 
     
     
       31. The touch screen panel as claimed in claim 21, wherein the second insulating film comprises at least one of SiO 2 , ZrO 2 , or TiO 2 . 
     
     
       32. The touch screen panel as claimed in claim 21, wherein the first sensing patterns comprise a plurality of diamond shaped patterns connected by coupling members. 
     
     
       33. The touch screen panel as claimed in claim 27, wherein the second sensing patterns comprise a plurality of diamond shaped patterns connected by coupling members.

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