公开(公告)号：US20170212393A1

公开(公告)日：2017-07-27

申请号：US15329660

申请日：2015-07-23

Applicant: Sharp Kabushiki Kaisha

Inventor： Hiroaki ASAGI ,  Isamu MIYAKE ,  Akira HIRAI

IPC: G02F1/1337

CPC classification number: G02F1/133788 ,  G02F2001/133397 ,  G02F2001/133738 ,  G02F2001/133749

Abstract: The present invention provides a method for producing a liquid crystal display device which can produce a liquid crystal display device with favorable voltage holding ratio reliability and reduced image sticking. The method is for producing a liquid crystal display device, which is a horizontal alignment-mode liquid crystal display device including a drive substrate provided with paired electrodes and a counter substrate, the method including: an application step of applying an alignment film material to the surface of each of the drive substrate and the counter substrate; a photo-alignment treatment step of irradiating the applied alignment film material with light; a post-baking step of baking the alignment film material having been subjected to the photo-alignment treatment to form an alignment film on the surface of each of the drive substrate and the counter substrate; and an additional irradiation step of irradiating the alignment films with light, the alignment film material containing a polymer with a (meth)acrylic backbone and a photo-functional group that undergoes a dimerization or cross-linking reaction by photo-irradiation, the additional irradiation step irradiating the alignment film formed on the surface of the counter substrate with an irradiation dose higher than the irradiation dose for the alignment film formed on the surface of the drive substrate.

公开(公告)号：US20160216564A1

公开(公告)日：2016-07-28

申请号：US15088364

申请日：2016-04-01

Applicant: Sharp Kabushiki Kaisha

Inventor： Koichi MIYACHI ,  Isamu MIYAKE

IPC: G02F1/1337 ,  G02F1/1335

CPC classification number: G02F1/133788 ,  G02F1/133528 ,  G02F1/133711 ,  G02F2001/133738 ,  Y10T428/10 ,  Y10T428/1005

Abstract: Provided is a liquid crystal display device provided with light fastness, stabilized alignment of liquid crystal, and excellent display quality. The liquid crystal display device of the present invention is a liquid crystal display device in which at least one of a pair of substrates includes a photo-alignment film, and an electrode in the stated order from the liquid crystal layer side; the photo-alignment film aligns liquid crystal molecules horizontally to the photo-alignment film surface; a polarization transmission axis direction of a polarizing element in the observation surface side of the liquid crystal cell crosses an alignment direction of liquid crystal molecules at a voltage lower than the threshold voltage in the liquid crystal layer; and a material constituting the photo-alignment film contains a material for aligning liquid crystal molecules in a direction crossing a polarization direction of polarized light by polarized light irradiated to the photo-alignment film.

Abstract translation: 提供一种具有耐光性，液晶稳定取向，显示质量优异的液晶显示装置。 本发明的液晶显示装置是液晶显示装置，其中一对基板中的至少一个包括光取向膜和从液晶层侧按顺序的电极; 光取向膜将液晶分子水平排列到光取向膜表面; 液晶单元的观察面侧的偏光元件的偏振透射轴方向在液晶层的低于阈值电压的电压下与液晶分子的取向方向相交; 并且构成光取向膜的材料含有通过照射到光取向膜的偏振光沿与偏振光的偏振方向交叉的方向对准液晶分子的材料。

公开(公告)号：US20160178969A1

公开(公告)日：2016-06-23

申请号：US14907872

申请日：2014-07-24

Applicant: Sharp Kabushiki Kaisha

Inventor： Isamu MIYAKE ,  Koichi MIYACHI ,  Hiroaki ASAGI

IPC: G02F1/1337

CPC classification number: G02F1/133788 ,  G02F1/133711 ,  G02F1/134363 ,  G02F2001/134372

Abstract: The present invention provides a method for manufacturing a liquid crystal display device including a photo-alignment film and capable of sufficiently improving the display quality. The method for manufacturing a liquid crystal display device of the present invention is a method for manufacturing a liquid crystal display device including a photo-alignment film. The method for manufacturing a liquid crystal display device successively includes a step (1) of forming on a substrate a film from a photo-alignment-film material that contains a solvent and a polymer including a photo-functional group that is capable of causing at least one chemical reaction selected from the group consisting of photodimerization, photoisomerization, and photo-Fries rearrangement; a step (2) of pre-heating the film to evaporate the solvent; a step (3) of irradiating the pre-heated film with polarized light; and a step (4) including an operation of main-heating the polarized-light-irradiated film at multiple temperatures from a lower temperature to a higher temperature. The liquid crystal display device is of an in-plane switching mode or a fringe field switching mode in each of which a pre-tilt angle is substantially 0°.

Abstract translation: 本发明提供了一种制造包括光取向膜并能够充分提高显示质量的液晶显示装置的方法。 本发明的液晶显示装置的制造方法是具有光取向膜的液晶显示装置的制造方法。 液晶显示装置的制造方法依次包括：步骤（1），在基板上由含有溶剂的光取向膜材料和含有能够引起的光官能团的聚合物形成膜 选自光二聚化，光致异构化和光 - 弗里斯重排的至少一种化学反应; 步骤（2）预​​热所述膜以蒸发溶剂; 步骤（3），用偏振光照射预热膜; 以及包括在从较低温度到较高温度的多个温度下主要加热偏振光照射的膜的操作的步骤（4）。 液晶显示装置具有面内切换模式或边缘场切换模式，其中预倾角基本上为0°。