Lofo High Tech Film Gmbh

Merck Patent Gmbh

Ulrich Siemann

Detlef Pauluth

Bernhard Rieger

Axel Jansen

Bernd Fiebranz

Ilona Herm

Jürgen Nick

The invention relates to compensation films for liquid-crystal displays with additions of rod-shaped liquid crystals mentioned below, to polarizer plates which have at least one compensation film of this type, to liquid-crystal displays which have compensation films of the said type, and to processes for the production of the said compensation films, polarizer plates and liquid-crystal displays, to the use of the compounds described in greater detail below as additions to compensation films for liquid-crystal displays, and to further subject-matters of the invention which can be seen below.

Optical compensation films

Thermoformed diaphragms made of cast polyarylate films, at least comprising one polyarylate (PAR) having a structural unit of the formula (I): where each of R, R, R, and R, independently of the others, is hydrogen, C-alkyl, C-alkoxy, or halogen, and each of Rand Rindependently of the other, is hydrogen, C-alkyl, C-alkoxy, phenyl, or halogen. The thermoformed diaphragms made of cast PAR films can be used as acoustic transducers, preferably as microphone diaphragms or loudspeaker diaphragms. The cast PAR films can be used for producing these diaphragms, and the PAR casting solutions can be used for producing the cast PAR films. There are processes for producing thermoformed diaphragms made of cast PAR films.

Membranes made of cast polyarylate film

Growing community of inventors

Weil am Rhein, Germany

Ulrich Siemann