公开(公告)号：US20140184968A1

公开(公告)日：2014-07-03

申请号：US14134361

申请日：2013-12-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yasuhiro NIIKURA ,  Momoko KATO ,  Daisuke KUBOTA ,  Makoto IKENAGA

IPC: G02F1/00

CPC classification number: G02F1/1396 ,  G02F1/1391 ,  G09G3/36

Abstract: Provided is a novel liquid crystal display device without deterioration of display quality. The liquid crystal display device includes a pixel for displaying a still image with a frame frequency of 1 Hz or lower. The pixel includes a liquid crystal element which includes a liquid crystal layer and has a cell gap of d (μm). The liquid crystal layer includes a liquid crystal composition which includes a liquid crystal material. The helical pitch of the liquid crystal material is longer than or equal to 4d μm and shorter than or equal to 8d μm. With this structure, a change in voltage applied to a pixel can be kept within an acceptable range of a deviation in gray level for displaying the same image. Thus, flickers due to a low refresh rate can be reduced, which leads to an increase in display quality.

Abstract translation: 提供了一种不劣化显示质量的新型液晶显示装置。 液晶显示装置包括用于显示帧频为1Hz以下的静止图像的像素。 像素包括液晶元件，其包括液晶层，并具有d（μm）的单元间隙。 液晶层包括含有液晶材料的液晶组合物。 液晶材料的螺旋间距大于或等于4dμm且小于或等于8dμm。 利用这种结构，可以将施加到像素的电压变化保持在用于显示相同图像的灰度偏差的可接受范围内。 因此，可以减少由于刷新率低而引起的闪烁，这导致显示质量的提高。

公开(公告)号：US20150038722A1

公开(公告)日：2015-02-05

申请号：US14336104

申请日：2014-07-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Momoko KATO ,  Yasuhiro NIIKURA ,  Makoto IKENAGA ,  Manabu KOBAYASHI ,  Tetsuji ISHITANI

IPC: C09K19/30 ,  C09K19/34

CPC classification number: C09K19/3003 ,  C09K19/12 ,  C09K19/3098 ,  C09K19/3444 ,  C09K19/3455 ,  C09K2019/123 ,  C09K2019/3016

Abstract: An organic compound represented by General Formula (G100) is provided. A novel liquid crystal composition containing the organic compound is provided.

Abstract translation: 提供由通式（G100）表示的有机化合物。 提供了含有有机化合物的新型液晶组合物。

公开(公告)号：US20150255029A1

公开(公告)日：2015-09-10

申请号：US14638667

申请日：2015-03-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yasuhiro NIIKURA ,  Makoto IKENAGA ,  Manabu KOBAYASHI ,  Ryo HATSUMI

IPC: G09G3/36 ,  G06F3/041

CPC classification number: G09G3/3648 ,  G06F3/0412 ,  G06F3/044 ,  G09G3/3614 ,  G09G2330/021

Abstract: [Object]Provided is a novel display device without deterioration of display quality or a novel display device in which flickering due to a reduced refresh rate is suppressed.[Solution]The display device includes a pixel for displaying a still image at a frame frequency of less than or equal to 1 Hz. The pixel includes a liquid crystal layer. The liquid crystal layer has a dielectric constant anisotropy of higher than or equal to 2 and lower than or equal to 3.8. Thus, flickering due to a reduced refresh rate can be suppressed, which leads to an improvement in display quality.

Abstract translation: 提供了一种不会降低显示质量的新型显示装置，或者抑制了由于刷新率降低引起的闪烁的新型显示装置。 [解决方案]显示装置包括用于以小于或等于1Hz的帧频显示静止图像的像素。 像素包括液晶层。 液晶层的介电常数各向异性高于或等于2且低于或等于3.8。 因此，可以抑制由刷新率降低引起的闪烁，这导致显示质量的提高。

公开(公告)号：US20130242233A1

公开(公告)日：2013-09-19

申请号：US13787989

申请日：2013-03-07

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Daisuke KUBOTA ,  Makoto IKENAGA

IPC: G02F1/1337

CPC classification number: G02F1/133753 ,  G02F1/137 ,  G02F2001/13775 ,  G02F2001/13793

Abstract: The occurrence of defective orientation of a composite of a polymer and a liquid crystal is suppressed. Furthermore, the occurrence of defective display of a liquid crystal display device including the composite of a polymer and a liquid crystal is suppressed. The composite of a polymer and a liquid includes a plurality of domains with different periods of alignment, a boundary formed between the plurality of domains, and a region where the plurality of domains adjoin and bond to one another without the boundary. The composite of a polymer and a liquid crystal exhibits a blue phase.

Abstract translation: 聚合物和液晶的复合体的取向不良的发生被抑制。 此外，抑制了包含聚合物和液晶的复合物的液晶显示装置的显示不良的发生。 聚合物和液体的复合物包括具有不同的定向周期的多个域，在多个域之间形成的边界，以及多个区域彼此邻接且彼此结合而没有边界的区域。 聚合物和液晶的复合物表现出蓝相。

公开(公告)号：US20180336840A1

公开(公告)日：2018-11-22

申请号：US15529363

申请日：2015-11-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yasuhiro NIIKURA ,  Makoto IKENAGA ,  Daisuke KUBOTA ,  Ryo HATSUMI

IPC: G09G3/34

Abstract: Provided is a novel display device without deterioration of display quality or a novel display device in which flickering due to a reduced refresh rate is suppressed. The display device includes a pixel for displaying a still image at a frame frequency of less than or equal to 1 Hz. The pixel includes a liquid crystal layer. The liquid crystal layer includes a molecule whose dipole moment is greater than or equal to 0 debye and less than or equal to 3 debye. Thus, flickering due to a reduced refresh rate can be suppressed, which leads to an improvement in display quality.

公开(公告)号：US20130256595A1

公开(公告)日：2013-10-03

申请号：US13832532

申请日：2013-03-15

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Makoto IKENAGA ,  Daisuke Kubota ,  Takahiro Yamamoto

IPC: C09K19/54

CPC classification number: C09K19/54 ,  C09K19/0275 ,  C09K19/2007 ,  C09K19/588 ,  C09K2019/0448 ,  C09K2019/2078

Abstract: A novel polymerizable monomer is provided. A novel liquid crystal composition which can be used in a variety of liquid crystal devices is provided using the polymerizable monomer. The use of the novel liquid crystal composition makes it possible to reduce driving voltage of a liquid crystal element and to reduce power consumption of a liquid crystal display device. A polymerizable monomer represented by General Formula (G1) is provided. A liquid crystal composition which includes a polymerizable monomer represented by General Formula (H1), a nematic liquid crystal, and a chiral material is also provided. In General Formulae (G1) and (H1), n and m are individually an integer from 1 to 20, and R1 and R2 individually represent hydrogen or a methyl group. In General Formulae (G1), k is 2 or 3.

Abstract translation: 提供了一种新型的可聚合单体。 使用可聚合单体提供可用于各种液晶装置的新型液晶组合物。 通过使用这种新颖的液晶组合物，可以降低液晶元件的驱动电压并降低液晶显示装置的功耗。 提供由通式（G1）表示的可聚合单体。 还提供了包含由通式（H1）表示的可聚合单体，向列型液晶和手性材料的液晶组合物。 通式（G1）和（H1）中，n和m分别为1〜20的整数，R1和R2分别表示氢或甲基。 在通式（G1）中，k为2或3。

公开(公告)号：US20130105732A1

公开(公告)日：2013-05-02

申请号：US13658205

申请日：2012-10-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke KUBOTA ,  Takahiro YAMAMOTO ,  Makoto IKENAGA

IPC: C09K19/20 ,  C09K19/12 ,  C09K19/38 ,  C09K19/30

CPC classification number: C09K19/0275 ,  C09K19/3068 ,  C09K2019/0448 ,  C09K2019/0481 ,  C09K2019/2078

Abstract: A liquid crystal composition with which generation of an alignment defect in a polymer/liquid crystal composite exhibiting a polymer-stabilized blue phase can be reduced is provided. The liquid crystal composition includes a liquid crystal material exhibiting a blue phase; and a liquid crystalline monomer. In the liquid crystalline monomer, the chain length (the sum of carbon atoms and oxygen atoms) of an oxyalkylene group represented as Y in the following general formula (G1) is n (2≦n≦11). The liquid crystalline monomer has a lower phase transition temperature from a nematic phase to an isotropic phase (TNI) than liquid crystalline monomers including the oxyalkylene groups whose chain lengths are (n−1) and (n+1). In (G1), X represents a mesogenic skeleton; Y represents an oxyalkylene group (including carbon and oxygen), and includes hydrogen or fluorine; and Z1 and Z2 individually represent an acryloyl group or a methacryloyl group.

Abstract translation: 提供了可以减少表现出聚合物稳定的蓝相的聚合物/液晶复合体中的取向缺陷的产生的液晶组合物。 该液晶组合物包括表现出蓝相的液晶材料; 和液晶单体。 在液晶单体中，下述通式（G1）中以Y表示的氧化烯基的链长（碳原子和氧原子的总和）为n（2 @ n @ 11）。 与包含链长为（n-1）和（n + 1）的氧化烯基的液晶单体相比，液晶单体具有从向列相到各向同性相（TNI）的相变温度较低。 在（G1）中，X表示介晶骨架; Y表示氧化烯基（包括碳和氧），并且包括氢或氟; Z 1和Z 2分别表示丙烯酰基或甲基丙烯酰基。