EP0143528A1
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Thin-film electroluminescent element
Assignee: Panasonic Holdings Corp
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Filing: 1984-09-27
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Granted: —
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Expires: 2004-09-27
Abstract
Abstract An electroluminescent element, especially a thinfilm electroluminescent element in which the dielectric film layer provided on at least one side of an electroluminor layer is essentially composed ot the materials represented by the following compositional formula: wherein A is at least one member selected from the group consisting of Zr, Hf and Sn, and B is at least one member selected from the group consisting of Mg, Ba and Ca. In the above formula, x+y=100mol%,0≦s<1,0≦t<1,40≦x≦80mol%,and20 ≦ y ≦ 60 mol%, but x and y cannot be equal to each other and also s and t cannot be 0 at the same time.
Inventors
- 👤 Tomizo Matsuoka
- 👤 Yosuke Fujita
- 👤 Jun Kuwata
- 👤 Atsushi Abe
- 👤 Tsuneharu Nitta
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 01:58
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/12; H05; H05B; H05B33/00; H05B33/12; H05B33/22; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A thin-film electroluminescent element in which a filmy dielectric layer is provided on at least one side of a filmy electroluminor or phosphor layer and a voltage is applied to said phosphor and dielectric layer laminate from two electrode layers at least one of which is previous to light, said dielectric layer being essentially composed of the materials of the following compositional formula: wherein x + y = 100 mol%, 0 ≦ s < 1, 0 ≦ t < 1, 40 < x ≦ 80 mol%, and 20 ≦ y < 60 mol% (provided that x and y cannot be equal to each other and also s and t cannot be 0 at the same time), and A is at least one element selected from Zr, Hf and Sn, and B is at least one element selected from Mg, Ba and Ca.
Claim 2
Dependent Claim
142 words
A thin-film electroluminescent element in which a filmy dielectric layer is provided on at least one side of a filmy electroluminor or phosphor layer and a voltage is applied to said phosphor and dielectric layer laminate from two electrode layers at least one of which is previous to light, said dielectric layer being essentially composed of the materials of the following compositional formula: wherein x + y = 100 mol%, 0 ≦ s < 1, 0 ≦ t < 1, 40 < x ≦ 80 mol%, and 20 ≦ y < 60 mol% (provided that x and y cannot be equal to each other and also s and t cannot be 0 at the same time), and A is at least one element selected from Zr, Hf and Sn, and B is at least one element selected from Mg, Ba and Ca.
Claim 3
Dependent Claim
23 words
A thin-film electroluminescent element according to Claim 1, wherein Sr is partly substituted with Mg in the range defined by t ≦ 0.4.
Claim 4
Dependent Claim
23 words
A thin-film electroluminescent element according to Claim 1, wherein Sr is partly substituted with Ba in the range defined by t ≦ 0.6.
Claim 5
Dependent Claim
23 words
A thin-film electroluminescent element according to Claim 1, wherein Sr is partly substituted with Ca in the range defined by t ≦ 0.3.
Claim 6
Dependent Claim
23 words
A thin-film electroluminescent element according to Claim 1, wherein Ti is partly substituted with Zr in the range defined by s ≦ 0.6.
Claim 7
Dependent Claim
23 words
A thin-film electroluminescent element according to Claim 1, wherein Ti is partly substituted with Sn in the range defined by s ≦ 0.4.
References Cited (Backward Citations)
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