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    • 4. 发明授权
    • Birefringence-free plastics
    • 双折射塑料
    • US4544583A
    • 1985-10-01
    • US536411
    • 1983-09-27
    • Uwe ClaussenHellmut HannesHans-Leo Weber
    • Uwe ClaussenHellmut HannesHans-Leo Weber
    • G02B5/30G02F1/1333
    • G02B5/3083G02F1/133305Y10S428/913Y10T428/1059Y10T428/1086Y10T428/24942Y10T428/2495Y10T428/31507
    • Birefringence-free arrangement of plastic foils, characterized in that two plastic foils having a single principal optical axis, said optical axis lying within the plane of the plastic foil, are arranged parallel behind each other so that the optical axes of both plastic foils are forming an angle of 90.degree..+-.7.degree. and the material of the foils with regard to its optical properties and the thickness of the foils being selected in such a manner that the optical path differences .DELTA.n.sub.1 D.sub.1 for the light waves which are associated with the two main refraction indices within the first plastic foil is approximately equal to the optical path difference .DELTA.n.sub.2 d.sub.2 of the second plastic foil, .DELTA.n.sub.1, .DELTA.n.sub.2, being the difference of the main refraction indices in the first and second foil, respectively, and d.sub.1, d.sub.2 standing for their thicknesses, and the use of said arrangement in components and devices in which polarized light is used, especially in liquid crystal displays.
    • 塑料箔的双折射布置,其特征在于,具有单个主光轴的两个塑料箔,所述光轴位于塑料箔的平面内,彼此平行地布置,使得两个塑料箔的光轴正在形成 角度为90度+/- 7度,并且箔的材料关于其光学性质和箔的厚度以这样的方式选择,使得与...相关联的光波的光程差DELTA n1D1 第一塑料箔内的两个主折射率近似等于第二塑料箔的光程差DELTA n2d2,分别为第一和第二箔中的主折射率的差值,ΔDTAn1,DELTA n2,d1 ,d2表示其厚度,以及在使用偏振光的部件和装置中使用所述装置,特别是在液晶显示器中。
    • 8. 发明授权
    • Process for the manufacture of printed circuits
    • 印刷电路制造工艺
    • US4859263A
    • 1989-08-22
    • US169830
    • 1988-03-17
    • Heinz-Jurgen DziurlaHans-Leo WeberDieter FreitagWerner Waldenrath
    • Heinz-Jurgen DziurlaHans-Leo WeberDieter FreitagWerner Waldenrath
    • B41M5/26H05K3/04H05K3/22
    • H05K3/046H05K2203/0528H05K2203/1105
    • A method for manufacturing printed electrical circuits which comprise a substrate and copper foil applied thereto by hot embossing in a predetermined circuit pattern, said method comprising(a) providing a laminate which comprises the sequence of a printed circuit substrate, a heat activated adhesive layer, a copper foil and a carrier film which is electrically conductive,(b) passing an electrical current between two electrodes and through the carrier film wherein one electrode has sufficiently large film contact area whereby substantially no resistance heating results from the current density and the other electrode serves as an embossing tool and is of sufficiently small film contact area whereby sufficient resistance heating results from the current density to activate the adhesive layer to bond the copper foil to the substrate in the pattern of said other electrode, and(c) removing from the laminate the carrier film and such copper foil overlying areas where the adhesive was not heat activated thereby leaving a copper foil pattern bonded to the substrate.
    • 一种制造印刷电路的方法,其包括以预定电路图案通过热压印施加到其上的基板和铜箔,所述方法包括(a)提供包括印刷电路基板,热活化粘合剂层, 铜箔和导电的载体膜,(b)在两个电极之间通过电流并通过载体膜,其中一个电极具有足够大的膜接触面积,从而基本上不受电流密度的影响,另一个电极 用作压花工具,并且具有足够小的膜接触面积,从而由电流密度产生足够的电阻加热,以激活粘合剂层,以将铜箔与基板以所述另一个电极的图案结合,以及(c) 将载体膜和这种铜箔叠合在不粘合剂的区域上 热激活,从而留下结合到基底的铜箔图案。