Circle method for producing polarized light extrac

专利名称：Circle method for producing polarized light extraction optical element, circularly
polarized light extraction optical element,
polarized light source device and a liquid
crystal display device including the same
发明人：鹿 島 啓 二
申请号：JP2002101225
申请日：20020403
公开号：JP3715940B2
公开日：
20051116
专利内容由知识产权出版社提供
摘要：PROBLEM TO BE SOLVED: To provide a method for manufacturing a circularly polarized light extracting optical element able to effectively suppress the deterioration of the display quality of a display device due to appearance of a light and dark pattern inside the screen of the display device. SOLUTION: The circularly polarized light extracting optical element 10 is provided with a glass substrate 11, an alignment layer 12 laminated on the glass substrate 11 and a cholesteric layer 13 subjected to planar alignment caused by alignment controllability of the surface of the alignment layer 12. The cholesteric layer 13 has the first surface 13a located on the glass substrate 11 side and the second surface 13b being opposite to the first surface 13a. The director directions of molecules along the first surface 13a in the cholesteric layer 13 practically coincide with each other in the first surface 13a due to the alignment controllability of the surface of the alignment layer 12. Also the chiral pitch of the cholesteric layer 13 varies so as to have the chiral pitch p2 on the second surface 13b side being longer
compared with the chiral pitch p1 on the first surface 13a side.
申请人：大日本印刷株式会社
地址：東京都新宿区市谷加賀町一丁目１番１号
国籍：JP
代理人：吉武 賢次,永井 浩之,岡田 淳平,名塚 聡,森 秀行,勝沼 宏仁,鈴木 清弘更多信息请下载全文后查看。