公开(公告)号：US20150015951A1

公开(公告)日：2015-01-15

申请号：US14504729

申请日：2014-10-02

Applicant: KONICA MINOLTA, INC.

Inventor： Takashi TAKEBE ,  Kunio SHIMIZU ,  Shigeki OKA

IPC: G02B1/10 ,  G02B5/30 ,  G02B1/08

CPC classification number: G02B5/305 ,  G02B1/08 ,  G02B1/105 ,  G02B1/14 ,  G02B5/3083 ,  G02F1/133528 ,  G02F2201/50 ,  Y10T428/105

Abstract: A polarizing plate protective film forming a polarizing plate by sandwiching a polarizer with two of the polarizing plate protective films, wherein at least one of the two polarizing plate protective films exhibits Ro defined by Expression (I) of 0 to 10 mm and Rt defined by Expression (II) of −20 to 20 mm, and also at least one of the polarizing plate protective films has a hard coat layer: Expression (I): Ro=(nx−ny)×d; Expression (II): Rt={(nx+ny)/2−nz}×d; wherein nx is a refractive index in a delayed phase axis direction in a plane of the polarizing plate protective film, ny is a refractive index in a direction at right angles to the delayed phase axis in the plane, nz is a refractive index in a film thickness direction, and d is a film thickness (nm).

Abstract translation: 一种偏振片保护膜，其通过将偏振片夹持在两个偏振片保护膜中而形成偏光板，其中两个偏振片保护膜中的至少一个表现为由表达式（I）定义为0至10毫米的Ro和由 表达式（II）为-20〜20mm，并且至少一个偏振片保护膜具有硬涂层：表达式（I）：Ro =（nx-ny）×d; 表达式（II）：Rt = {（nx + ny）/ 2-nz}×d; 其中nx是偏振片保护膜的平面中的延迟相位轴方向的折射率，ny是与平面中的延迟相位轴成直角的方向的折射率，nz是膜中的折射率 厚度方向，d为膜厚（nm）。

公开(公告)号：US20140071379A1

公开(公告)日：2014-03-13

申请号：US14081747

申请日：2013-11-15

Applicant: KONICA MINOLTA, INC.

Inventor： Naoki TAKAHASHI ,  Takashi TAKEBE ,  Satoshi MORII ,  Kazuki AKASAKA ,  Nobuo KUBO

IPC: G02F1/1335 ,  G02B5/30

CPC classification number: G02F1/13362 ,  G02B1/105 ,  G02B1/14 ,  G02B5/3033 ,  G02B5/3083 ,  G02F1/133528 ,  G02F1/134363 ,  G02F2413/11

Abstract: The purpose of the present invention is to provide a polarizing plate protective film and liquid crystal display device comprising same whereby the generation of egg-shaped blur in a liquid crystal display device (especially an IPS liquid crystal display device) can still be limited even under high-temperature/high-humidity conditions. For this polarizing plate protective film, if nx is the refractive index in the X-axis direction at which the birefringence in the film surface reaches a maximum and ny is the refractive index in the Y-axis direction orthogonal to the X-axis direction in the film surface, then the birefringence under stress (nx−ny) of the film as measured at a wavelength of 589 nm when any tensile stress 5-35 MPa is applied in the X-axis direction or Y-axis direction of the film under 50 DEG C, 80% RH conditions is 0.

Abstract translation: 本发明的目的是提供一种偏振片保护膜和包括其的液晶显示装置，由此液晶显示装置（特别是IPS液晶显示装置）中的蛋形模糊的产生仍然可以受到限制 高温/高湿度条件。 对于该偏振片保护膜，如果nx是膜表面双折射达到最大值的X轴方向的折射率，ny是与X轴方向正交的Y轴方向的折射率， 膜表面，然后在589nm的波长下测量的膜的应力（nx-ny）处的双折射，当在膜的X轴方向或Y轴方向上施加5-35MPa的拉伸应力时， 50℃，80％RH条件为0。