IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0105805
(2002-03-21)
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발명자
/ 주소 |
- Thomsen, Scott V.
- Andreasen, Michael
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출원인 / 주소 |
- Guardian Industries Corp.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
32 인용 특허 :
32 |
초록
▼
A first surface mirror includes a reflective layer (e.g., Al or Ag), at least one dielectric layer and at least one protective layer of or including high density diamond-like carbon (DLC). The high density DLC enables the protective layer to be applied at a relatively small thickness which enables u
A first surface mirror includes a reflective layer (e.g., Al or Ag), at least one dielectric layer and at least one protective layer of or including high density diamond-like carbon (DLC). The high density DLC enables the protective layer to be applied at a relatively small thickness which enables undesirable color often associated with DLC to be prevented or minimized, while at the same time good protective characteristics (e.g., scratch resistance) can be realized.
대표청구항
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1. A projection television including a first surface mirror for reflecting at least red, green and blue light components from a source toward a lens of the television so that an image can be viewed by a viewer, the first surface mirror comprising:a substrate supporting a coating, wherein the coating
1. A projection television including a first surface mirror for reflecting at least red, green and blue light components from a source toward a lens of the television so that an image can be viewed by a viewer, the first surface mirror comprising:a substrate supporting a coating, wherein the coating includes at least a reflective layer, first and second dielectric layers, and a layer comprising amorphous diamond-like carbon (DLC), wherein the reflective layer reflects at least said red, green and blue light components from said source toward said lens of said television so that an image can be viewed by a viewer of said television,wherein the reflective layer is provided between the substrate and the dielectric layers, and the layer comprising DLC is provided over the reflective layer and the dielectric layers.wherein the first dielectric layer has an index of refraction value “n” greater than an index of refraction value “n” of the reflective layer and less than an index of refraction value “n” of the second dielectric layer, and the layer comprising DLC has an index of refraction value “n” no greater than the index of refraction value “n” of the second dielectric layer, andwherein the layer comprising DLC has an average density of at least about 2.4 gm/cm 3 and at least about 40% of carbon-carbon bonds in the layer comprising DLC are sp 3 type carbon- carbon bonds, and wherein the layer comprising DLC has an average hardness of at least about 10 GPa. 2. The projection television of claim 1, wherein the layer comprising DLC has an average density of at least about 2.7 gm/cm 3 . 3. The projection television of claim 1, wherein the layer comprising DLC is from about 1-100 nm thick. 4. The projection television of claim 1, wherein the layer comprising DLC is from about 1-25 nm thick. 5. The projection television of claim 1, wherein the layer comprising DLC is from about 1-10 nm thick. 6. The projection television of claim 1, wherein the layer comprising DLC is from about 1-5 nm thick. 7. The projection television of claim 1, wherein the reflective layer is metallic and comprises at least one of Al and Ag. 8. The projection television of claim 7, wherein the reflective layer has a visible transmission of no greater than 1.5%. 9. The projection television of claim 1, wherein the first dielectric layer is provided between the reflective layer and the second dielectric layer, and wherein the first dielectric layer has an index of refraction value “n” of from 1.3 to 1.9, the second dielectric layer has an index of refraction value “n” of from 2.0 to 3.0, and wherein the substrate comprises glass. 10. The projection television of claim 1, wherein the first dielectric layer has an index of refraction value “n” of from 1.4 to 1.75, the second dielectric layer has an index of refraction value “n” of from 2.2 to 2.7, and the layer comprising DLC has an index of refraction value “n” of from 1.9 to 2.1. 11. The projection television of claim 1, wherein the first dielectric layer comprises silicon oxide, and wherein the substrate comprises glass. 12. The projection television of claim 1, wherein the second dielectric layer comprises titanium oxide. 13. The projection television of claim 1, wherein the first dielectric layer is from 70-110 nm thick, the second dielectric layer is from 20-60 nm thick, and the layer comprising DLC is from 1-25 nm thick. 14. The projection television of claim 1, wherein the mirror reflects at least 80% of incoming visible light, and carbon-carbon atoms and/or bonds of the layer comprising DLC are subimplanted into the second dielectric layer. 15. A mirror for use in a projection television for reflecting at least red, green, and blue light components from a source toward a lens of the television so that an image can be viewed by a viewer, the mirror comprising:a substrat e supporting a coating, wherein the coating includes a reflective layer for reflecting light toward the lens of the television, at least a first dielectric layer, and a layer comprising diamond-like carbon (DLC) provided over the reflective layer and the first dielectric layer, andwherein the layer comprising DLC has an average density of at least about 2.4 gm/cm 3 and at least about 40% of carbon-carbon bonds in the layer comprising DLC are sp 3 type carbon-carbon bonds, and wherein the layer comprising DLC is from about 1-100 nm thick. 16. The mirror of claim 15, wherein the layer comprising DLC has an average density of at least about 2.7 gm/cm 3 . 17. The mirror of claim 15, wherein the layer comprising DLC is from about 1-10 nm thick. 18. The mirror of claim 15, wherein the reflective layer comprises at least one of Al and Ag, and wherein another dielectric layer is provided on the substrate over the first dielectric layer but under the layer comprising DLC. 19. The mirror of claim 15, wherein the reflective layer has a visible transmission of from 0.5 to 1.5%. 20. The mirror of claim 15, wherein the first dielectric layer is provided between the reflective layer and a second dielectric layer, and wherein the first dielectric layer has an index of refraction value “n” of from 1.3 to 1.9, the second dielectric layer has an index of refraction value “n” of from 2.0 to 3.0, the layer comprising DLC has an index of refraction value “n” less than that of the second dielectric layer, and wherein the layer comprising DLC is hydrogenated. 21. The mirror of claim 15, wherein the first dielectric layer has an index of refraction value “n” of from 1.4 to 1.75, provided over the first dielectric layer and under the layer comprising DLC has an index of refraction value “n” of from 2.2 to 2.7. 22. The mirror of claim 15, wherein the dielectric layer comprises at least one of silicon oxide and titanium oxide. 23. The mirror of claim 15, wherein the substrate comprises glass, the first dielectric layer is from 70-110 nm thick, a second dielectric layer is from 20-60 nm thick, and the layer comprising DLC is from 1-10 nm thick. 24. The mirror of claim 15, wherein the layer comprising DLC is hydrogenated. 25. The mirror of claim 15, wherein the layer comprising DLC comprises from 0.5 to 20% hydrogen. 26. The mirror of claim 15, wherein the layer comprising DLC is ion beam deposited on the substrate over the dielectric layer and over the reflective layer in a manner so that at least some carbon-carbon atoms and/or bonds of the layer comprising DLC are subimplanted into the dielectric layer. 27. A projection television including a first surface mirror for reflecting at least red, blue and green light components from a source toward a lens so that an image can be viewed by a viewer, wherein the first surface mirror comprises:a glass substrate supporting a coating, wherein the coating includes a reflective layer for reflecting at least the red, blue and green light components from the source toward the lens so that the image can be viewed on the projection television, at least one dielectric layer, and a layer comprising amorphous diamond-like carbon (DLC),wherein the reflective layer is provided between the glass substrate and the dielectric layer, and the layer comprising DLC is provided over the reflective layer and the dielectric layer, and wherein the layer comprising DLC has an average density of at least about 2.4 gm/cm 3 , an average hardness of at least about 10 GPa, and a thickness of from 1-100 nm. 28. The projection television of claim 27, wherein the layer comprising DLC has a thickness of from 1-10 nm, an average hardness of at least about 20 GPa, and an average density of from 2.6 to 3.1 gm/cm 3 . 29. The projection television of claim 27, wherein carbon-carbon atoms of the layer comprising DLC are subimplanted into the dielectric layer. 30. The projectio n television of claim 27, wherein the dielectric layer has an index of refraction value “n” greater than that of the reflective layer and less than that of the layer comprising DLC.
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