Discrimination medium and article to be discriminated
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G02F-001/1335
G02F-001/13
G03H-001/00
G06K-009/74
B32B-009/04
출원번호
US-0577075
(2004-10-27)
등록번호
US-7388627
(2008-06-17)
우선권정보
JP-2003-373341(2003-10-31)
국제출원번호
PCT/JP04/015910
(2004-10-27)
§371/§102 date
20060425
(20060425)
국제공개번호
WO05/043493
(2005-05-12)
발명자
/ 주소
Hoshino,Hidekazu
Takeuchi,Itsuo
Ono,Masatake
Sasaki,Mutsumi
Ida,Tohru
출원인 / 주소
NHK Spring Co., Ltd.
대리인 / 주소
Oliff & Berridge, PLC
인용정보
피인용 횟수 :
3인용 특허 :
6
초록▼
A breakable seal can be discriminated more easily than the conventional one. The discrimination medium 100 has a cholesteric liquid crystal layer 104, a substrate layer 105, an adhesive layer 102, and a partial peeling layer 103. The discrimination medium 100 has an adhesion strength XA between the
A breakable seal can be discriminated more easily than the conventional one. The discrimination medium 100 has a cholesteric liquid crystal layer 104, a substrate layer 105, an adhesive layer 102, and a partial peeling layer 103. The discrimination medium 100 has an adhesion strength XA between the adhesive layer 102 and the partial peeling layer 103, an adhesion strength XB between the partial peeling layer 103 and the cholesteric liquid crystal layer 104, and an adhesion strength XC between the cholesteric liquid crystal layer 104 and the substrate layer 105. The relationships XAB and XAC are satisfied at areas 106, 108, and 110. The relationships XCA and XCB are satisfied at areas 107 and 109. In the above manner, when the discrimination medium 100 is peeled from the article 101, the discrimination medium 100 is separated into a discrimination medium 116 and a discrimination medium 117. For example, the above cholesteric liquid crystal layer is provided to a breakable seal, so that the breakable seal which allows confirmation of whether or not the discrimination medium is authentic before the breakable seal is broken and which allows confirmation of breakage of he breakable seal when the breakable seal is broken is provided.
대표청구항▼
The invention claimed is: 1. A discrimination medium comprising: an optical functional layer including at least one of a cholesteric liquid crystal layer having a circular polarization light selectivity of reflecting predetermined circularly polarized light, and a multilayer film having plural ligh
The invention claimed is: 1. A discrimination medium comprising: an optical functional layer including at least one of a cholesteric liquid crystal layer having a circular polarization light selectivity of reflecting predetermined circularly polarized light, and a multilayer film having plural light transparent films which are laminated and are different from each other in refraction index; an adhesive layer; a partial peeling layer having a first surface and a second surface, the first surface directly or indirectly contacting the adhesive layer, the second surface directly or indirectly contacting the optical functional layer; and a structure which is provided at a portion of the second surface and of which the portion is easily peeled from the optical functional layer. 2. A discrimination medium comprising: an optical functional layer including at least one of a cholesteric liquid crystal layer having a circular polarization light selectivity of reflecting predetermined circularly polarized light, and a multilayer film having plural light transparent films which are laminated and are different from each other in refraction index; a substrate layer provided on the optical functional layer; an adhesive layer; a partial peeling layer having a first surface and a second surface, the first surface directly or indirectly contacting the adhesive layer, the second surface directly or indirectly contacting the optical functional layer; an adhesion strength XA on the first surface of the partial peeling layer; an adhesion strength XB on the second surface of the partial peeling layer; and an adhesion strength XC between the optical functional layer and the substrate layer, wherein the adhesion strength XA, the adhesion strength XB, and the adhesion strength XC satisfy the relationships XAB and XAC at a portion, and satisfy the relationships XCA and XCB at another portion. 3. A discrimination medium comprising: an optical functional layer including at least one of a cholesteric liquid crystal layer having a circular polarization light selectivity of reflecting predetermined circularly polarized light, and a multilayer film having plural light transparent films which are laminated and are different from each other in refraction index; an adhesive layer; a partial peeling layer having a first surface and a second surface, the first surface directly or indirectly adhering the adhesive layer, the second surface directly or indirectly contacting the optical functional layer; and a portion which is provided on the second surface of the peeling layer and which has an adhesion strength weaker than that of another portion of the peeling layer, wherein when a pressure or a stress is applied to the discrimination medium, the portion is selectively peeled, and a cavity is thereby formed thereat. 4. A discrimination medium according to claim 1, the discrimination medium further comprising: a multilayer film provided between the adhesive layer and the partial peeling layer, the multilayer film having plural light transparent films which are laminated and are different from each other in refraction index. 5. A discrimination medium according to claim 1, the discrimination medium further comprising: a cut line provided at at least one of the respective layers by cutting. 6. A discrimination medium according to claim 1, the discrimination medium further comprising: a structure which is provided in the cholesteric liquid crystal layer, and in which an interlayer peeling easily occurs. 7. A discrimination medium according to claim 1, the discrimination medium further comprising: a hologram which is provided in the optical functional layer and which has a figure. 8. A discrimination medium according to claim 7, wherein when the discrimination medium is peeled, the figure of the hologram is cut. 9. A discrimination medium according to claim 1, wherein when the discrimination medium is peeled, at least one of a portion of the optical functional layer remains in the discrimination medium and another portion of the optical functional layer is peeled from the discrimination medium, wherein the portion and another portion has a figure. 10. A discrimination medium according to claim 3, wherein when the discrimination medium is peeled, the cavity has a figure. 11. An article to be discriminated comprising: the discrimination medium according to claim 1. 12. A discrimination medium according to claim 2, the discrimination medium further comprising: a multilayer film provided between the adhesive layer and the partial peeling layer, the multilayer film having plural light transparent films which are laminated and are different from each other in refraction index. 13. A discrimination medium according to claim 2, the discrimination medium further comprising: a cut line is provided to at at least one of the respective layers by cutting. 14. A discrimination medium according to claim 2, the discrimination medium further comprising: a structure which is provided in the cholesteric liquid crystal layer, and in which an interlayer peeling easily occurs. 15. A discrimination medium according to claim 2, the discrimination medium further comprising: a hologram which is provided in the optical functional layer and which has a figure. 16. A discrimination medium according to claim 15, wherein when the discrimination medium is peeled, the figure of the hologram is cut. 17. A discrimination medium according to claim 2, wherein when the discrimination medium is peeled, at least one of a portion of the optical functional layer remains in the discrimination medium and another portion of the optical functional layer is peeled from the discrimination medium, wherein the portion and another portion has a figure. 18. An article to be discriminated comprising: the discrimination medium according to claim 2. 19. A discrimination medium according to claim 3, the discrimination medium further comprising: a multilayer film provided between the adhesive layer and the partial peeling layer, the multilayer film having plural light transparent films which are laminated and are different from each other in refraction index. 20. A discrimination medium according to claim 3, the discrimination medium further comprising: a cut line is provided to at at least one of the respective layers by cutting. 21. A discrimination medium according to claim 3, the discrimination medium further comprising: a structure which is provided in the cholesteric liquid crystal layer, and in which an interlayer peeling easily occurs. 22. A discrimination medium according to claim 3, the discrimination medium further comprising: a hologram which is provided in the optical functional layer and which has a figure. 23. A discrimination medium according to claim 22, wherein when the discrimination medium is peeled, the figure of the hologram is cut. 24. An article to be discriminated comprising: the discrimination medium according to claim 3.
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이 특허에 인용된 특허 (6)
Hoshino,Hidekazu; Takeuchi,Itsuo; Sasaki,Mutsumi, Identifying medium and identifying method for object.
Takahashi, Naoki; Kawahara, Satoru; Sugiura, Shoji; Ashida, Takeyuki; Imai, Takio, Laminated optical film, method for producing the same film and liquid-crystal display device using the same film.
Watanabe, Masachika; Umeya, Masanori; Eto, Koji; Yamauchi, Tsuyoshi, Fabrication process for cholesteric liquid crystal media having a volume hologram.
Watanabe, Masachika; Umeya, Masanori; Eto, Koji; Yamauchi, Tsuyoshi, Fabrication process for cholesteric liquid crystal media having a volume hologram.
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