公开(公告)号：US10008162B2

公开(公告)日：2018-06-26

申请号：US14845374

申请日：2015-09-04

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Daisuke Kubota ,  Yoshiharu Hirakata ,  Ryo Hatsumi

IPC: G09G3/36 ,  G02F1/139 ,  G02F1/1345 ,  G02F1/1362 ,  G02F1/137

CPC classification number: G09G3/3607 ,  G02F1/13454 ,  G02F1/136213 ,  G02F1/1396 ,  G02F2001/13706 ,  G02F2202/42 ,  G09G3/36 ,  G09G3/3648 ,  G09G2330/025

Abstract: A novel liquid crystal display device without a decrease in display quality. The liquid crystal display device includes a pixel for displaying a still image at a frame frequency of less than or equal to 1 Hz, and a liquid crystal layer in the pixel has a dielectric constant anisotropy of greater than or equal to 2 and less than or equal to 5. With the above 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 still image. Thus, flickers due to a low refresh rate can be reduced, which leads to an increase in display quality.

公开(公告)号：US09917116B2

公开(公告)日：2018-03-13

申请号：US15601330

申请日：2017-05-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kubota ,  Ryo Hatsumi ,  Masami Jintyou ,  Takumi Shigenobu ,  Naoto Goto

IPC: H01L27/12 ,  H01L29/417 ,  H01L29/786 ,  H01L29/45 ,  H01L49/02 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1339 ,  G02F1/1341 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368 ,  G06F3/041 ,  G06F3/044 ,  H01L29/24

CPC classification number: H01L27/1255 ,  G02F1/13306 ,  G02F1/133305 ,  G02F1/133345 ,  G02F1/13338 ,  G02F1/133512 ,  G02F1/1339 ,  G02F1/1341 ,  G02F1/1343 ,  G02F1/136213 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/133357 ,  G02F2001/13415 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04108 ,  H01L27/1225 ,  H01L27/124 ,  H01L27/1248 ,  H01L27/127 ,  H01L28/60 ,  H01L29/24 ,  H01L29/41733 ,  H01L29/45 ,  H01L29/78633 ,  H01L29/7869 ,  H01L29/78696

Abstract: A semiconductor device having a high aperture ratio and including a capacitor capable of increasing the charge capacity is provided. A semiconductor device includes a transistor over a substrate, a first light-transmitting conductive film over the substrate, an oxide insulating film covering the transistor and having an opening over the first light-transmitting conductive film, a nitride insulating film over the oxide insulating film and in contact with the first light-transmitting conductive film in the opening, a second light-transmitting conductive film connected to the transistor and having a depressed portion in the opening, and an organic resin film with which the depressed portion of the second light-transmitting conductive film is filled.

公开(公告)号：US09666604B2

公开(公告)日：2017-05-30

申请号：US15180316

申请日：2016-06-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hajime Kimura ,  Daisuke Kubota ,  Shunpei Yamazaki

IPC: H01L29/10 ,  H01L29/12 ,  H01L27/12 ,  G06F3/041 ,  G06F3/047 ,  G06F3/044

CPC classification number: H01L27/1225 ,  G02F1/136227 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/047

Abstract: A display device includes a first pixel, a second pixel, a first substrate, and a second substrate. The first pixel includes a first pixel electrode, a first conductive film, and a first transistor. The first pixel electrode is electrically connected to the first transistor. The first conductive film includes a region functioning as a common electrode. The second pixel includes a second pixel electrode, a second conductive film, and a second transistor. The second pixel electrode is electrically connected to the second transistor. The second conductive film includes a region functioning as a common electrode. The first conductive film and the second pixel electrode are provided on the same plane. A first insulating film is provided over the first conductive film and the second pixel electrode. The first pixel electrode and the second conductive film are provided over the first insulating film.

公开(公告)号：US09645451B2

公开(公告)日：2017-05-09

申请号：US14182470

申请日：2014-02-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Daisuke Kubota ,  Akio Yamashita ,  Tetsuji Ishitani ,  Tomohiro Tamura

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/1335 ,  G02F1/1345 ,  H01L29/786 ,  H01L27/12 ,  H01L29/04 ,  G02F1/137

CPC classification number: G02F1/1343 ,  G02F1/133603 ,  G02F1/133707 ,  G02F1/134363 ,  G02F1/1345 ,  G02F2001/134372 ,  G02F2001/13793 ,  G02F2202/023 ,  G02F2202/103 ,  G02F2202/104 ,  G02F2202/105 ,  H01L27/1225 ,  H01L29/04 ,  H01L29/78696

Abstract: A liquid crystal display device using a liquid crystal exhibiting a blue phase and having a novel structure, and a method for manufacturing the liquid crystal display device. A plurality of structure bodies (also referred to as ribs, protrusions, or projecting portions) are formed over the same substrate, and a pixel electrode and an electrode (a common electrode at a fixed potential) corresponding to the pixel electrode are formed thereover. An electric field is applied to the liquid crystal layer exhibiting a blue phase by using the pixel electrode that has an inclination and the electrode corresponding to the pixel electrode, which also has an inclination. A shorter distance between the adjacent structure bodies allows a strong electric field to be applied to the liquid crystal layer, which results in a reduction in power consumption for driving the liquid crystal.

公开(公告)号：US09625776B2

公开(公告)日：2017-04-18

申请号：US14685096

申请日：2015-04-13

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Daisuke Kubota

IPC: G02F1/1334 ,  G02F1/136 ,  G02F1/137 ,  C09K19/20 ,  C09K19/54 ,  C09K19/02 ,  C09K19/56

CPC classification number: G02F1/136 ,  C09K19/0275 ,  C09K19/2007 ,  C09K19/544 ,  C09K19/56 ,  C09K2019/2078 ,  C09K2019/546 ,  G02F1/1334 ,  G02F1/137 ,  G02F2001/13345 ,  G02F2001/13775 ,  G02F2001/13793

Abstract: The occurrence of a defective orientation of a polymer/liquid crystal composite is suppressed. In addition, the occurrence of defective display of a liquid crystal display device including the polymer/liquid crystal composite is suppressed. In the polymer/liquid crystal composite exhibiting a blue phase, a plurality of domains are included and defective orientations easily occur at boundaries between the domains. Thus, by lowering orientation periodicities at boundaries between the domains, a defect-free orientation to high orientation periodicities at the boundary between adjacent domains can be obtained. Specifically, the polymer/liquid crystal composite exhibiting the blue phase includes the plurality of domains each of which has a size of 3 μm or less.

公开(公告)号：US09612499B2

公开(公告)日：2017-04-04

申请号：US15072645

申请日：2016-03-17

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Shunpei Yamazaki ,  Daisuke Kubota ,  Yusuke Kubota

IPC: H01L29/12 ,  G02F1/1368 ,  H01L27/12 ,  H01L29/04 ,  G02F1/1343 ,  G02F1/1333 ,  G02F1/1362 ,  G02F1/1335

CPC classification number: G02F1/1368 ,  G02F1/133345 ,  G02F1/133514 ,  G02F1/134309 ,  G02F1/136213 ,  G02F2201/40 ,  H01L27/1225 ,  H01L27/1229 ,  H01L27/124 ,  H01L27/1248 ,  H01L27/1255 ,  H01L29/045

Abstract: A liquid crystal display device with an increased pixel aperture ratio is provided. A liquid crystal display device that displays an image with high contrast and high luminance is provided. The liquid crystal display device includes a first pixel electrode; a second pixel electrode; a transistor; a capacitor; a first insulating film; a second insulating film; and a third insulating film. The transistor includes a gate electrode; a gate insulating film; a first oxide semiconductor film; and a source electrode and a drain electrode. One of a pair of electrodes of the capacitor includes a second oxide semiconductor film. The first insulating film is provided over the first oxide semiconductor film. The second insulating film is provided over the second oxide semiconductor film such that the second oxide semiconductor film is sandwiched between the first insulating film and the second insulating film. The third insulating film overlaps with an end of the first pixel electrode. The second pixel electrode is provided over the third insulating film.

公开(公告)号：US09530804B2

公开(公告)日：2016-12-27

申请号：US14517986

申请日：2014-10-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Daisuke Kubota

IPC: G02F1/1368 ,  G02F1/1333 ,  H01L29/786 ,  H01L27/12 ,  G02F1/1339

CPC classification number: H01L27/1255 ,  G02F1/133345 ,  G02F1/1339 ,  G02F1/1368 ,  H01L27/1225 ,  H01L29/78606 ,  H01L29/7869

Abstract: A display device with excellent display quality is provided. The display device includes a transistor over a first substrate, an inorganic insulating film in contact with the transistor, and an organic insulating film in contact with the inorganic insulating film. The transistor includes a gate electrode over the first substrate, an oxide semiconductor film overlapping with the gate electrode, a gate insulating film in contact with one surface of the oxide semiconductor film, and a pair of electrodes in contact with the oxide semiconductor film. The inorganic insulating film is in contact with the other surface of the oxide semiconductor film. The organic insulating film overlaps with the oxide semiconductor film with the inorganic insulating film provided therebetween and is separated. Note that the thickness of the organic insulating film is preferably greater than or equal to 500 nm and less than or equal to 10 μm.

Abstract translation: 提供了具有优异显示质量的显示装置。 显示装置包括在第一基板上的晶体管，与晶体管接触的无机绝缘膜，以及与无机绝缘膜接触的有机绝缘膜。 晶体管包括在第一衬底上的栅电极，与栅电极重叠的氧化物半导体膜，与氧化物半导体膜的一个表面接触的栅绝缘膜和与氧化物半导体膜接触的一对电极。 无机绝缘膜与氧化物半导体膜的另一个表面接触。 有机绝缘膜与氧化物半导体膜重叠，其间设置有无机绝缘膜并分离。 注意，有机绝缘膜的厚度优选为大于或等于500nm且小于或等于10μm。

公开(公告)号：US09500916B2

公开(公告)日：2016-11-22

申请号：US14337731

申请日：2014-07-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shuji Fukai ,  Ryo Hatsumi ,  Daisuke Kubota

IPC: G02F1/1343

CPC classification number: G02F1/13306 ,  G02F1/133345 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/1337 ,  G02F1/13394 ,  G02F1/134363 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/133302 ,  G02F2001/134372 ,  G02F2001/134381 ,  G02F2001/13629 ,  G02F2001/136295 ,  G02F2201/121 ,  G02F2201/123 ,  G09G3/3614 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2310/08 ,  G09G2320/0204 ,  G09G2320/0247

Abstract: A flicker of an FFS liquid crystal display device that is driven at a low refresh rate is reduced. In an FFS liquid crystal display, a pixel electrode and a first common electrode included in a liquid crystal element are formed on an element substrate side, and a second common electrode is formed on another substrate (counter substrate) side. By making the first and second common electrodes have the same potential, generation of a residual DC voltage can be suppressed in a pixel. Thus, even when a refresh rate is lowered, change in transmittance of a pixel can be suppressed in a data retention period, so that a flicker can be reduced.

Abstract translation: 以低刷新率驱动的FFS液晶显示装置的闪烁减少。 在FFS液晶显示装置中，在元件基板侧形成像素电极和包含在液晶元件中的第一公共电极，在另一基板（对置基板）侧形成第二公共电极。 通过使第一和第二公共电极具有相同的电位，可以在像素中抑制残留DC电压的产生。 因此，即使当刷新率降低时，也可以在数据保持期间抑制像素的透射率的变化，从而能够降低闪烁。

公开(公告)号：US09366913B2

公开(公告)日：2016-06-14

申请号：US14177543

申请日：2014-02-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kubota ,  Yoshiharu Hirakata ,  Masahiko Hayakawa

IPC: G02F1/1339 ,  G02F1/1333

CPC classification number: G02F1/1339 ,  G02F1/13439 ,  G02F1/1368 ,  G02F2001/133311 ,  G02F2001/133357

Abstract: An active matrix liquid crystal display device including a counter substrate and an element substrate firmly attached with each other with a sealant, and a liquid crystal layer between the counter substrate and the element substrate is provided. The counter substrate is provided with at least a resin layer. An outer end portion of the resin layer is not exposed to the outside atmosphere. The resin layer and the sealant at least partly overlap with each other when seen from a cross section of the liquid crystal display device. A moisture impermeable layer is formed between the resin layer and the sealant.

Abstract translation: 提供了一种有源矩阵液晶显示装置，其包括对置基板和与密封剂牢固地连接的元件基板，以及在相对基板和元件基板之间的液晶层。 对置基板设置有至少树脂层。 树脂层的外端部不暴露于外部气氛。 当从液晶显示装置的横截面看时，树脂层和密封剂彼此至少部分重叠。 在树脂层和密封剂之间形成不透水层。

公开(公告)号：US09366896B2

公开(公告)日：2016-06-14

申请号：US14050875

申请日：2013-10-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Yoshiharu Hirakata ,  Daisuke Kubota ,  Akio Yamashita

IPC: G02F1/1333 ,  G02F1/1341 ,  G06F3/041 ,  G06F3/044

CPC classification number: G02F1/13338 ,  G02F1/1341 ,  G02F2001/13415 ,  G06F3/0412 ,  G06F3/044

Abstract: A semiconductor layer of a transistor is formed of an oxide semiconductor film including a crystal part. An organic resin film covering the transistor is formed. By treatment such as drying treatment on the organic resin film in a cell process, variations in the threshold voltage of the oxide semiconductor transistor due to moisture can be suppressed. A common electrode faces a pixel electrode. The common electrode and the pixel electrode are formed over the organic resin film with an insulating film provided therebetween. Therefore, a capacitor can be provided to a liquid crystal element if a pixel does not include a wiring for a storage capacitor. An antistatic electrode is provided on the outer side of a color filter substrate and the capacitance between the antistatic electrode and the common electrode is utilized, so that the liquid crystal display device can be used as a touch panel.

Abstract translation: 晶体管的半导体层由包括晶体部分的氧化物半导体膜形成。 形成覆盖晶体管的有机树脂膜。 通过在电池处理中对有机树脂膜进行干燥处理等处理，可以抑制氧化物半导体晶体管由于水分导致的阈值电压的变化。 公共电极面对像素电极。 公共电极和像素电极形成在有机树脂膜上，其间设置有绝缘膜。 因此，如果像素不包括用于存储电容器的布线，则可以向液晶元件提供电容器。 在滤色器基板的外侧设置有抗静电电极，利用抗静电电极和公共电极之间的静电电容，可以将液晶显示装置用作触摸面板。