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1. 发明公开

EP0107492A2 Helichromic-smectic liquid crystal compositions and display cells 有权
标题翻译： Helichromische smektischeFlüssigkristallzusammensetzungenund Anzeigezellen。
公开(公告)号：EP0107492A2
公开(公告)日：1984-05-02
申请号：EP83306409.0
申请日：1983-10-21
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Huffman, William A. , Brown, Harvey A.
IPC分类号： C09K19/54 , G02F1/13
CPC分类号： C09K19/54 , C07C205/06 , C07F3/02 , C09B1/20 , C09B1/50 , C09B1/542 , C09B1/56 , C09B5/2472 , C09B19/02 , C09B23/0091 , C09B23/10 , C09B23/105 , C09B23/107 , C09B29/0003 , C09B29/081 , C09B29/103 , C09B29/28 , C09B29/36 , C09B31/02 , C09B31/16 , C09B33/04 , C09B35/00 , C09B56/00 , C09B57/00 , C09K19/60 , G02F1/13
摘要： A composition for use in thermally-addressable liquid crystal display devices, comprising a smectic liquid crystal material and a helichromic compound possessing both a chromophoric moiety and an optically-active moiety. The helichromic compound is a circularly dichroic dye capable of propagating incident visible light in a circularly polarized manner so that all polarizations of the incident light are absorbed. The composition comprising the helichromic compound can be utilized in thermally-addressable liquid crystal display devices to provide a display which operates at lower voltages, with faster response times, and high contrast ratios.
摘要翻译：一种用于热寻址液晶显示装置的组合物，其包含具有发色团部分和光学活性部分的近晶液晶材料和双重铬化合物。螺旋染料化合物是能够以圆偏振方式传播入射可见光的环状二色性染料，使得入射光的所有偏振被吸收。包含双重铬酸盐化合物的组合物可用于热寻址液晶显示装置中，以提供在较低电压下工作的显示器，响应时间更快，对比度高。

2. 发明授权

EP0107492B1 Helichromic-smectic liquid crystal compositions and display cells 有权
标题翻译： HELICHROMIC-SMECTIC液晶组合物和显示细胞
公开(公告)号：EP0107492B1
公开(公告)日：1989-08-09
申请号：EP83306409.0
申请日：1983-10-21
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Huffman, William A. , Brown, Harvey A.
IPC分类号： C09K19/54 , G02F1/13
CPC分类号： C09K19/54 , C07C205/06 , C07F3/02 , C09B1/20 , C09B1/50 , C09B1/542 , C09B1/56 , C09B5/2472 , C09B19/02 , C09B23/0091 , C09B23/10 , C09B23/105 , C09B23/107 , C09B29/0003 , C09B29/081 , C09B29/103 , C09B29/28 , C09B29/36 , C09B31/02 , C09B31/16 , C09B33/04 , C09B35/00 , C09B56/00 , C09B57/00 , C09K19/60 , G02F1/13

3. 发明公开

EP0124296A1 Thermographic system using naphthoylated leuco phenazine dyes 有权
标题翻译：使用萘甲酰化的无色吩嗪染料的热成像系统
公开(公告)号：EP0124296A1
公开(公告)日：1984-11-07
申请号：EP84302244.3
申请日：1984-04-02
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Brown, Harvey A. , Miller, Alan G. , Leichter, Louis M.
IPC分类号： B41M5/26 , C09B17/02
CPC分类号： C09B17/02 , B41M5/323
摘要： This invention involves thermographic imaging systems. The thermographic system under consideration comprises a euco dye, a nitrate salt, and, optionally, an acid and stabilizing :ompound. Dyes in their reduced leuco form can provide the pasis of color image forming systems. However, the leuco form of a given dye can often revert spontaneously to the colored form of the dye during manufacture unless the structure of the dye is altered to promote stability. In this invention, which involves stabilization of the leuco dye, the stabilized leuco dye contains a phenazine nucleus with naphthoyl substituents on the 10-position and, optionally on one or both of the 3- and 7-positions through an amino group.
In their oxidized form, the leuco dyes of this invention orovide access to a range of red and magenta colors which ex- nibit greater stability when subjected to light and temperatures characteristic of the stage of overhead projectors than that exhibited by previously available leuco dyes of this color range.
摘要翻译：本发明涉及热成像系统。所考虑的热成像系统包含一种euco染料，一种硝酸盐，以及任选的一种酸和稳定剂：复合物。减少隐色形式的染料可以提供彩色图像形成系统的粘贴。然而，给定染料的无色形式通常可以在制造过程中自发回复到染料的着色形式，除非改变染料的结构以促进稳定性。在涉及无色染料稳定的本发明中，稳定的无色染料包含在10位具有萘酰基取代基并任选在3-和7-位中的一个或两个上通过氨基的吩嗪核。在它们的氧化形式中，本发明的无色染料保持接近一定范围的红色和品红色，当受到高架投影仪的阶段的光和温度特性时，该颜色具有比先前可用的无色染料显示的更高的稳定性颜色范围。

4. 发明授权

EP0044666B1 Helichromic compounds and displays 有权
标题翻译： HELICHROMIC化合物和显示
公开(公告)号：EP0044666B1
公开(公告)日：1985-05-29
申请号：EP81303118.4
申请日：1981-07-08
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Brown, Harvey A. , Huffman, William A.
IPC分类号： C09K19/60 , G02F1/137
CPC分类号： C09K19/36 , C09K19/54 , C09K19/60 , C09K19/601

5. 发明公开

EP0012020A1 Dry silver photo-sensitive compositions, dyes for use therein and preparation of such dyes 有权
标题翻译：热显影的光敏银盐材料，染料和该生产这些染料。
公开(公告)号：EP0012020A1
公开(公告)日：1980-06-11
申请号：EP79302730.1
申请日：1979-11-29
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Lea, Bernard Alan , Burrows, Ronald William , Reece, Jack E. , Brown, Harvey A.
IPC分类号： G03C1/84 , G03C1/02 , C09B23/00
CPC分类号： G03C1/49854
摘要： Dry silver photo-sensitive compositions comprising an intimate mixture of a substantially light-insensitive silver compound which upon reduction gives a visible change and sufficient of a silver halide to catalyse said reduction to give a visible change in those areas where the silver halide has been exposed to light and when the mixture is heated in the presence of a reducing agent, and as an acutance dye a compound of the general formula:
摘要翻译：干银光敏组合物，其包括基本上光不敏感的银化合物，其在还原得到卤化银的可见变化和足以催化所述还原，得到在这些领域的可见变化的紧密混合物，其中卤化银已暴露到光，并且当该混合物在还原剂的存在下被加热，并作为锐度的染料通式的化合物：

6. 发明授权

EP0124296B1 Thermographic system using naphthoylated leuco phenazine dyes 有权
标题翻译：使用萘酚氯化钠染料的热成像系统
公开(公告)号：EP0124296B1
公开(公告)日：1987-02-04
申请号：EP84302244.3
申请日：1984-04-02
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Brown, Harvey A. , Miller, Alan G. , Leichter, Louis M.
IPC分类号： B41M5/26 , C09B17/02
CPC分类号： C09B17/02 , B41M5/323

7. 发明授权

EP0012020B1 Dry silver photo-sensitive compositions, dyes for use therein and preparation of such dyes 有权
标题翻译：干银光敏组合物，其使用的染发剂和这样的染料的制备
公开(公告)号：EP0012020B1
公开(公告)日：1983-01-26
申请号：EP79302730.1
申请日：1979-11-29
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Lea, Bernard Alan , Burrows, Ronald William , Reece, Jack E. , Brown, Harvey A.
IPC分类号： G03C1/84 , G03C1/02 , C09B23/00
CPC分类号： G03C1/49854

8. 发明公开

EP0044666A3 Helichromic compounds and displays 有权
标题翻译： HELICHROMIC化合物和显示
公开(公告)号：EP0044666A3
公开(公告)日：1982-02-03
申请号：EP81303118
申请日：1981-07-08
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Brown, Harvey A. , Huffman, William A.
IPC分类号： C09K03/34 , G02F01/137
CPC分类号： C09K19/36 , C09K19/54 , C09K19/60 , C09K19/601
摘要： A composition for use with liquid crystal compositions in liquid crystal display devices, which possesses both a chromophoric moiety and a helical ordering moiety. The helical ordering moiety is capable of helically ordering a mixture of liquid crystal material and helichromic compound. The helichromic compound can be utilized in conventional "guest-host" and "twist nematic" displays as well as in unique helichromic displays. When used in helichromic displays, the helichromic compounds eliminate after-image scattering and enable the display to be operated at reduced voltages.

9. 发明公开

EP0044666A2 Helichromic compounds and displays 有权
标题翻译： Helichromische Verbindungen und Anzeigezellen。
公开(公告)号：EP0044666A2
公开(公告)日：1982-01-27
申请号：EP81303118.4
申请日：1981-07-08
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Brown, Harvey A. , Huffman, William A.
IPC分类号： C09K19/60 , G02F1/137
CPC分类号： C09K19/36 , C09K19/54 , C09K19/60 , C09K19/601
摘要： A composition for use with liquid crystal compositions in liquid crystal display devices, which possesses both a chromophoric moiety and a helical ordering moiety. The helical ordering moiety is capable of helically ordering a mixture of liquid crystal material and helichromic compound. The helichromic compound can be utilized in conventional "guest-host" and "twist nematic" displays as well as in unique helichromic displays. When used in helichromic displays, the helichromic compounds eliminate after-image scattering and enable the display to be operated at reduced voltages.
摘要翻译：用于液晶显示装置中的液晶组合物的组合物，其具有发色部分和螺旋排列部分。螺旋排列部分能够螺旋排列液晶材料和直链氢化合物的混合物。螺旋染料化合物可以用于常规的“客体主体”和“扭曲向列”显示器以及独特的直角显色器中。当用于Helichromic显示器时，Helichromic化合物消除了后图像散射，并使得显示器能够以降低的电压工作。

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