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    • 2. 发明专利
    • LIQUID CRYSTAL CELL PARAMETER DETECTING METHOD AND DEVICE
    • JPH1184335A
    • 1999-03-26
    • JP24882497
    • 1997-09-12
    • SATO SUSUMUMEIRIYOU TEKUNIKA KK
    • SATO SUSUMUSHU SUGURUKA SENTOGASHI YOSHIHIRO
    • G01B11/06G01M11/00G01N21/23G02F1/13G02F1/133
    • PROBLEM TO BE SOLVED: To provide a liquid crystal cell parameter detecting method and device capable of detecting liquid crystal cell parameters such as the thickness of a liquid crystal layer, a twisted angle in the orientation of liquid crystal molecules in a short time with high accuracy with simple constitution. SOLUTION: The polarization direction of a polarizing plate 4 is made to an X-axis direction and an liquid crystal cell 3 is rotated at a position where the transmission intensity of light passing through the liquid crystal 3 becomes an extreme value (the maximum value or the minimum value) and the transmission intensity Ix at that time is measured. Then, transmission intensities Iy, I45, Iq45 being respective intensities at the time when the polarization direction of the plate 4 is made to a Y-axis direction, at the time when the polarization direction of the plate 4 is made to form the angle of 45 degrees with the X-axis and the Y-axis and at the time when a quaterwave plate 5 is inserted between the plate 4 and the liquid crystal cell 3 while the axial direction of the plate 5 is inclined by 45 degrees with respect to the polarization direction of the plate 4 in the state that the polarization direction of the plate 4 is made to form the angle of 45 degrees with the X-axis and the Y-axis are measured. Then, a Stokes parameter is calculated based on the respective measured values Ix, Iy, I45, Iq45 and the thickness of a liquid crystal layer and a twisted angle in the orientation of liquid crystal molecules or the like are calculated based on the calculated Stokes parameter.
    • 3. 发明专利
    • METHOD AND DEVICE FOR DETECTING 2D LIQUID CRYSTAL CELL PARAMETER
    • JPH1183730A
    • 1999-03-26
    • JP24882397
    • 1997-09-12
    • SATO SUSUMUMEIRIYOU TEKUNIKA KK
    • SATO SUSUMUSHU SUGURUKA SENTOGASHI YOSHIHIRO
    • G01B11/02G01M11/00G01N21/21G02F1/13
    • PROBLEM TO BE SOLVED: To provide a method and device for detecting 2D liquid crystal cell parameter wherein, with a simple configuration, such parameters as thickness of a liquid crystal layer at a plurality of points of a liquid crystal cell, kink angle in orientation of liquid crystal molecule, etc., are detected at the same time with precision in a short time. SOLUTION: The light from a light source 1 is allowed to pass a polarizing plate 3, a liquid crystal cell 4, and a polarizing plate 5, and transmission light intensity of the liquid crystal cell 4 at a plurality of points is measured with photo-detector 7. Transmission light intensity of the liquid crystal cell 4 at a plurality of points is measured when polarizing direction of the polarizing plate 5 is X-axis direction, when it is Y-axis direction, when it forms 45 deg. with the X-axis and Y-axis, or when a 1/4 wavelength 6 is so inserted between the polarizing plate 5 and the liquid crystal cell 4 that its axis direction is tilted by 45 deg. against the polarizing direction of the polarizing plate 5 while the polarizing direction of the polarizing plate 5 forms 45 with the X-axis and Y-axis. Stokes' parameter, at a plurality of points, of the liquid crystal cell 4 is obtained from a measured value, and from the obtained Stoke' parameter of the liquid crystal cell 4 at a plurality of points, thickness of a liquid crystal layer, at a plurality of points, of the liquid crystal cell 4 and a kink angle of orientation of liquid crystal molecule are obtained at the same time.
    • 4. 发明专利
    • ORIENTATION TREATMENT OF LIQUID CRYSTAL SUBSTRATE AND PRODUCTION OF LIQUID CRYSTAL CELL
    • JPH09211459A
    • 1997-08-15
    • JP4414696
    • 1996-02-05
    • SATO SUSUMUMEIRIYOU TEKUNIKA KK
    • SATO SUSUMUTOGASHI YOSHIHIRO
    • G02F1/1337
    • PROBLEM TO BE SOLVED: To eliminate the need for a rubbing treatment and to obtain a uniform and good orientation characteristic even with a large-area substrate by a simple stage by applying liquid crystals by a roller or blade on the surface of a film for orientation deposited the substrate while allowing the liquid crystals to flow in one direction, holding the substrate for a prescribed period of time and forming a liquid crystal oriented layer. SOLUTION: While the roller 1 is lightly pressed onto the film 5 for orientation, the roller is driven in an arrow X direction, and while the roller 1 is kept rotated in an arrow R direction, the roller is rolled on the substrate 3 deposited with the film 5 for orientation. The liquid crystals 10 on the front side of the roller flow in the arrow direction X, by which the liquid crystal coating layer 9 is formed in the state of the liquid crystal molecules heading this flow direction. Similarly, the liquid crystal coating layer 9 is formed even if the blade is moved while its front end is pressed. The comparison made between the roller 1 and the blade reveals that the roller 1 less flaws the film 5 for orientation, allows the industrial utilization thereof and is high in productivity. The coating by the roller 1 is thus superior.
    • 6. 发明专利
    • Method and device for detecting parameter of liquid crystal element
    • 用于检测液晶元件参数的方法和装置
    • JP2005164970A
    • 2005-06-23
    • JP2003403819
    • 2003-12-02
    • Meiriyou Tekunika KkMitsubishi Electric Corp三菱電機株式会社名菱テクニカ株式会社
    • KURATA TETSUYUKISATAKE TETSUYANISHIOKA TAKAHIROMAEHARA TOSHIAKIKANEKO MAKOTOOKABE MASAKISATO SUSUMU
    • G01M11/00G02F1/13G02F1/1337
    • PROBLEM TO BE SOLVED: To provide a method and a device for detecting parameters of a liquid crystal element with which a twist angle and thickness of the liquid crystal element are accurately detected even in the case of the liquid crystal element of which the azimuth angles of directors of liquid crystal molecules on a substrate interface are unknown. SOLUTION: Monochromatized light linearly polarized in the y-axis direction with a polarizer 22 is made incident nearly parallel to the direction normal to the incident side substrate of the liquid crystal element 20. Light transmitted by the liquid crystal element 20 is received with a detector 24 via an analyzer 23. The detector 24 outputs an output signal showing intensity of inputted light. A processor 25 detects a set of the output signals of the detector 24 in the case transmission axis directions of the analyzer 23 are set in arbitrary angular directions of ω, (ω+45°), (ω+90°) and in the state in which angles of the liquid crystal element 20 are set to three or more angles α. Then a set of parameters S 1 , S 2 is calculated by using the set of the output signals of the detector, and the twist angle Φ and the thickness d of the liquid crystal element 20 are detected by using the calculated set of the parameters S 1 , S 2 . COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种用于检测液晶元件的参数的方法和装置,其中即使在液晶元件的液晶元件的情况下也可精确地检测液晶元件的扭曲角度和厚度, 液晶分子在衬底界面上的方位角是未知的。 解决方案:使用偏振器22在y轴方向上线偏振的单色光被大致平行于与液晶元件20的入射侧基板垂直的方向入射。接收由液晶元件20透射的光 检测器24输出表示输入光强度的输出信号。 在分析器23的传输轴方向设定为ω,(ω+ 45°),(ω+ 90°)的任意角度方向的情况下,处理器25检测检测器24的输出信号的集合,并且在状态 将液晶元件20的角度设定为三角以上的角度α。 然后通过使用检测器的输出信号的集合和液体的扭曲角Φ和厚度d来计算一组参数S 1 ,S 2 通过使用计算出的参数S 1 S 2 的组来检测晶体元件20。 版权所有(C)2005,JPO&NCIPI