公开(公告)号：US11307463B2

公开(公告)日：2022-04-19

申请号：US16833469

申请日：2020-03-27

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Koji Murata ,  Kiyoshi Minoura ,  Akira Sakai ,  Yuichi Kawahira ,  Kohzoh Nakamura

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/1362

Abstract: The liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate includes a first dielectric substrate, a first electrode and a second electrode provided on the first dielectric substrate and capable of generating a horizontal electric field in the liquid crystal layer, and a first alignment film being in contact with the liquid crystal layer. The second substrate includes a second dielectric substrate and a second alignment film provided on the second dielectric substrate and being in contact with the liquid crystal layer. The first alignment film has an azimuthal anchoring strength lower than the second alignment film. The liquid crystal layer includes a nematic liquid crystal material and a polymer network.

公开(公告)号：US10803775B2

公开(公告)日：2020-10-13

申请号：US16641596

申请日：2017-09-20

Applicant: SHARP KABUSHIKI KAISHA ,  SAKAI DISPLAY PRODUCTS CORPORATION

Inventor： Masahiro Mitani ,  Kohzoh Nakamura ,  Kiyoshi Minoura ,  Hiroshi Tsuchiya ,  Yozo Narutaki

IPC: G09F9/30 ,  G02F1/1343 ,  G09G3/36 ,  G09G3/3233 ,  G09G3/3225 ,  H01L27/32 ,  G02F1/1335

Abstract: A display apparatus according to one embodiment comprises pixels each comprising a liquid crystal display element (LC element) and an organic EL display element (EL element). The EL element comprises an anode and a cathode electrically separated from each electrode of the LC element. Each pixel comprises a first transistor which changes the magnitude of a current flowing through the EL element based on the potential of a first bus line; a second transistor which electrically separates the first bus line and the LC element; and a third transistor which electrically connects the first and second transistor with the first bus line. A method for driving a display device according to one embodiment reduces the potential difference between the pixel electrode and the counter electrode before turning off the second transistor during switching from display by the LC element to display by the EL element.

公开(公告)号：US10437106B2

公开(公告)日：2019-10-08

申请号：US15750157

申请日：2016-07-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Akira Sakai ,  Kohzoh Nakamura ,  Masahiro Hasegawa ,  Takako Koide ,  Kiyoshi Minoura

IPC: G02F1/13363 ,  G02F1/1335 ,  G02F1/1337 ,  G02B5/30 ,  G02F1/1343

Abstract: A liquid crystal display panel (100A) includes a first polarizing plate (22) and a first phase difference plate (32a) disposed on an observer side, and a second polarizing plate (24) and a second phase difference plate (34a) disposed on a back surface side. Δnd of a liquid crystal layer having a homogeneous alignment when no electrical field is applied is 360 nm or greater and 490 nm or less, and an in-plane retardation R1 of the first phase difference plate is 100 nm or greater and 160 nm or less. A thickness direction retardation of at least one of the first and second phase difference plates has a negative value. The slow axes of the first and second phase difference plates are substantially parallel to each other and substantially orthogonal to an azimuthal direction of the liquid crystal director.

公开(公告)号：US10394079B2

公开(公告)日：2019-08-27

申请号：US15559823

申请日：2016-03-11

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Kohzoh Nakamura ,  Kiyoshi Minoura ,  Akira Sakai

IPC: G02F1/13363 ,  G02F1/1343 ,  G02F1/1335 ,  G02F1/139 ,  G02F1/137

Abstract: A liquid crystal display panel (100) according to an embodiment includes: a first polarizer (22) and a first phase plate (32) on the viewer's side; and a second polarizer (24) and a second phase plate (34) on the rear face side. A liquid crystal layer, which takes a homogeneous alignment in the absence of an applied electric field, has a Δnd of not less than 360 nm and not more than 490 nm; a retardation R1 of the first phase plate is not less than 100 nm and not more than 160 nm; and a retardation R2 of the second phase plate is not less than 200 nm and not more than 360 nm. The slow axes of the first and second phase plates are substantially parallel to each other and substantially orthogonal to the azimuth direction of the director of the liquid crystal.

公开(公告)号：US09726958B2

公开(公告)日：2017-08-08

申请号：US14380765

申请日：2013-02-26

Applicant: Sharp Kabushiki Kaisha

Inventor： Eiji Satoh ,  Kohzoh Nakamura ,  Hisashi Watanabe ,  Takahiro Nakahara

IPC: G02B26/00 ,  G02F1/167 ,  G02F1/19 ,  G02B26/02 ,  G02F1/1339

CPC classification number: G02F1/167 ,  G02B26/023 ,  G02B26/026 ,  G02F1/13394 ,  G02F1/19

Abstract: The present invention provides a display panel and a display device which can increase light use efficiency with a simple configuration. An optical modulation layer 30 provided between substrates 10 and 20 contains a polar solvent 31a, a nonpolar solvent 31b, and hydrophilic shape-anisotropic members 32, the hydrophilic substrate 20 makes contact with the polar solvent 31a, the hydrophobic substrate 10 makes contact with the nonpolar solvent 31b, a projected area of the shape-anisotropic members 32 onto the substrates 10 and 20 is changed by adjusting a magnitude of a voltage to be applied to the optical modulation layer 30.

公开(公告)号：US09304369B2

公开(公告)日：2016-04-05

申请号：US14401059

申请日：2013-05-15

Applicant: Sharp Kabushiki Kaisha

Inventor： Kohzoh Nakamura ,  Eiji Satoh ,  Hisashi Watanabe ,  Takahiro Nakahara

IPC: G02F1/167 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1333 ,  G02F1/1335

CPC classification number: G02F1/167 ,  G02F1/133345 ,  G02F1/133512 ,  G02F1/134336 ,  G02F1/136286 ,  G02F1/1368 ,  G02F1/172 ,  G02F2201/40

Abstract: A display panel includes: a substrate constituted by an active matrix substrate; a substrate opposite the substrate; and a light modulation layer interposed between the substrates. The change in the magnitude or the frequency of the voltage applied between a pixel electrode and a common electrode rotates a shape-anisometric member in the light modulation layer, and the pixel electrode extends over a scan signal line over an insulating layer.

Abstract translation: 显示面板包括：由有源矩阵基板构成的基板; 与衬底相对的衬底; 以及插入在所述基板之间的光调制层。 在像素电极和公共电极之间施加的电压的大小或频率的变化使光调制层中的形状 - 不规则构件旋转，并且像素电极在绝缘层上延伸越过扫描信号线。

公开(公告)号：US20150131141A1

公开(公告)日：2015-05-14

申请号：US14400360

申请日：2013-05-15

Applicant: Sharp Kabushiki Kaisha

Inventor： Takahiro Nakahara ,  Eiji Satoh ,  Kohzoh Nakamura ,  Hisashi Watanabe

IPC: G02F1/167 ,  G02F1/1335 ,  G02F1/133

CPC classification number: G02F1/167 ,  G02F1/13306 ,  G02F1/133514 ,  G02F1/133555 ,  G02F1/133621 ,  G02F1/19

Abstract: The present invention provides a transflective display device which is high in transmittance, can secure sufficient brightness in display, and can display black. A transflective display device 1 includes a display panel 2 and a backlight 3. The display panel 2 includes a substrate 10 having an electrode 12. a substrate 20 having an electrode 22, and an optical modulation layer 30 containing shape-anisotropic members 32. A frequency of a voltage to be applied to the electrodes 12 and 22 is changed so as to rotate the shape-anisotropic members 32. When the shape-anisotropic members 32 are oriented such that their major axes extend in parallel with one of the substrates on which the shape-anisotropic members 32 abut, multiple reflection of incoming light is caused, and thus black is displayed.

Abstract translation: 本发明提供一种透反射率高的半透过型显示装置，能够显示出足够的亮度，能显示黑色。 透反式显示装置1包括显示面板2和背光源3.显示面板2包括具有电极12的基板10.具有电极22的基板20和包含形状各向异性构件32的光调制层30。 改变施加到电极12和22的电压的频率以使形状 - 各向异性构件32旋转。当形状 - 各向异性构件32被定向成使得它们的长轴与其上的基板平行延伸时， 形状 - 各向异性构件32邻接，引起入射光的多次反射，并且因此显示黑色。

公开(公告)号：US20150015935A1

公开(公告)日：2015-01-15

申请号：US14380765

申请日：2013-02-26

Applicant: Sharp Kabushiki Kaisha

Inventor： Eiji Satoh ,  Kohzoh Nakamura ,  Hisashi Watanabe ,  Takahiro Nakahara

IPC: G02F1/167 ,  G02F1/19 ,  G02F1/1339

CPC classification number: G02F1/167 ,  G02B26/023 ,  G02B26/026 ,  G02F1/13394 ,  G02F1/19

Abstract: The present invention provides a display panel and a display device which can increase light use efficiency with a simple configuration. An optical modulation layer 30 provided between substrates 10 and 20 contains a polar solvent 31a, a nonpolar solvent 31b, and hydrophilic shape-anisotropic members 32, the hydrophilic substrate makes contact with the polar solvent 31a, the hydrophobic substrate 10 makes contact with the nonpolar solvent 31b, a projected area of the shape-anisotropic members 32 onto the substrates 10 and 20 is changed by adjusting a magnitude of a voltage to be applied to the optical modulation layer 30.

Abstract translation: 本发明提供一种显示面板和显示装置，其能够以简单的结构提高光的使用效率。 设置在基板10和20之间的光学调制层30包含极性溶剂31a，非极性溶剂31b和亲水形状各向异性部件32，亲水基板与极性溶剂31a接触，疏水基板10与非极性接触 溶剂31b通过调整施加到光调制层30的电压的大小来改变形状 - 各向异性构件32到基板10和20上的投影面积。