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    • 5. 发明授权
    • Liquid crystal display device
    • 液晶显示装置
    • US4936654A
    • 1990-06-26
    • US300290
    • 1989-01-19
    • Takeshi SuzakiKenichi Narita
    • Takeshi SuzakiKenichi Narita
    • G02F1/13363G02F1/139
    • G02F1/13363G02F1/1397G02F2202/40G02F2413/01G02F2413/08
    • A liquid crystal display device has substrates opposed to each other, a nematic liquid crystal layer having a positive dielectric anisotropy and homogeneously oriented to have a twisted structure where liquid crystal molecules are twisted with a twist angle from 180.degree. to 300.degree., the nematic liquid crystal layer being held between the substrates, polarizers between which the liquid crystal layer is placed, and a phase plate placed between the liquid crystal layer and one of the polarizers. In this display device, a product .DELTA.n.multidot.d(PH) of a birefringent anisotropy .DELTA.n and a thickness d of the liquid crystal layer and a product .DELTA.n.multidot.d(PH) of a birefringent anisotropy .DELTA.n and a thickness d of the phase plate satisfy a relational condition:0.0
    • 液晶显示装置具有彼此相对的基板,具有正介电各向异性且均匀取向的向列型液晶层具有扭曲结构,其中液晶分子以180°至300°的扭转角扭转,向列液体 保持在基板之间的晶体层,放置液晶层的偏振器和位于液晶层和偏振器之一之间的相位板。 在该显示装置中,双折射各向异性DELTA n的乘积DELTA nxd(PH)和液晶层的厚度d以及双折射各向异性DELTA n的乘积DELTA nxd(PH)和相位板的厚度d满足 关系条件:0.0
    • 9. 发明授权
    • Liquid crystal display with reflective color filters
    • 液晶显示器带反光滤色片
    • US5555114A
    • 1996-09-10
    • US480731
    • 1995-06-07
    • Kenichi NaritaTakeshi Suzaki
    • Kenichi NaritaTakeshi Suzaki
    • G02F1/1335G02F1/13363G02F1/1347
    • G02F1/133514G02F1/133536G02F1/133553G02F2001/133543G02F2001/133638
    • A color liquid crystal display includes a cholesteric liquid crystal layer for selectively reflecting at high efficiency circularly polarized light having a specific wavelength, for example, a wavelength corresponding to red, blue or green, a birefringent layer formed on the liquid crystal layer, and a polarize plate formed on the birefringent layer. The birefringent layer includes a pair of electrodes and a nematic liquid crystal layer formed between the electrodes. Circularly polarized light of a specific wavelength that is selectively reflected by the cholesteric liquid crystal layer has its vibration direction rotated by retardation of the birefringent layer 20 when an electric field is not applied to the liquid crystal. When an electric field is applied to the liquid crystal layer, the reflected circularly polarized light is directly transmitted through the birefringent layer. The polarize plate blocks or transmits light according to the vibration direction of the light transmitted through the birefringent layer. This liquid crystal display has high usage efficiency of light and displays color clearly.
    • 彩色液晶显示器包括胆甾型液晶层,用于以高效率选择性地反射具有特定波长的圆偏振光,例如对应于红色,蓝色或绿色的波长,形成在液晶层上的双折射层,以及 在双折射层上形成极化板。 双折射层包括在电极之间形成的一对电极和向列型液晶层。 当不对液晶施加电场时,由胆甾型液晶层有选择地反射的特定波长的圆偏振光的振动方向由于双折射层20的延迟而旋转。 当向液晶层施加电场时,反射圆偏振光直接透过双折射层。 偏光板根据穿过双折射层的光的振动方向阻挡或透过光。 该液晶显示器的使用效率高,显示颜色清晰。
    • 10. 发明授权
    • Liquid crystal display device with a phase plate for shadow compensation
    • 液晶显示装置,具有用于阴影补偿的相位板
    • US5119220A
    • 1992-06-02
    • US381631
    • 1989-06-26
    • Kenichi NaritaTakeshi Suzaki
    • Kenichi NaritaTakeshi Suzaki
    • G02F1/13363G02F1/139
    • G02F1/13363G02F1/1397G02F2202/40G02F2413/01
    • A field effect type liquid crytal display device suitable for use in a high level multiplexing drive, has liquid crystal molecules twisted with an angle from 180.degree. to 350.degree. which are held between two polarizers. The liquid crystal display device generates an interference color due to a birefringent effect of liquid crystal. The occurrence the of this interference color can be prevented by laminating color compensation plates but if the thickness of the optical system increases, a deviation in a display position or a change in the contrast occurs dependent on the observing direction. A phase compensation for the color interference of the liquid crystal is achieved by setting the retardation of the liquid crystal cells having a large twist angle of the liquid crystal molecules and by laminating thin phase plates. Thus, the display quality is improved and the optical axis of an achromatic display can be easily adjusted.
    • PCT No.PCT / JP89 / 00069 Sec。 371日期:1989年7月26日 102(e)日期1989年7月26日PCT提交1989年1月25日PCT公布。 出版物WO89 / 07282 日本1989年8月10日。适用于高电平复用驱动的场效应液晶显示装置,液晶分子以180°至350°的角度扭转,夹持在两个偏振器之间。 液晶显示装置由于液晶的双折射效应而产生干涉色。 可以通过层叠色彩补偿板来防止这种干涉色的出现,但是如果光学系统的厚度增加,则显示位置的偏差或对比度的变化取决于观察方向。 通过设定具有大的液晶分子扭转角的液晶单元的延迟并通过层叠薄相位板来实现液晶的颜色干涉的相位补偿。 因此,改善了显示质量,并且可以容易地调节消色差显示的光轴。