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公开(公告)号：US20160284291A1
公开(公告)日：2016-09-29
申请号：US15177015
申请日：2016-06-08
Applicant: Japan Display Inc.
Inventor： Yukio Tanaka , Toshiyuki Higano , Kenji Nakao , Hirofumi Wakemoto
CPC classification number: G09G3/3614 , G09G3/2018 , G09G3/3648 , G09G3/3696 , G09G2300/0426 , G09G2320/046 , G09G2330/021
Abstract: According to one embodiment, a liquid crystal display device includes an array substrate, a counter substrate, a liquid crystal layer and a driving unit. The driving unit is configured to perform polarity inversion driving by applying, to the pixel electrode, positive and negative video signals. When applying the video signals to the pixel electrode, the driving unit superposes a correction signal corresponding to a polarity inversion frequency and the gray level on the video signals in advance.
Abstract translation: 根据一个实施例，液晶显示装置包括阵列基板，对向基板，液晶层和驱动单元。 驱动单元被配置为通过向像素电极施加正和负视频信号来执行极性反转驱动。 当将视频信号施加到像素电极时，驱动单元预先将对应于极性反转频率和灰度级的校正信号叠加在视频信号上。
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公开(公告)号：US09406270B2
公开(公告)日：2016-08-02
申请号：US14294471
申请日：2014-06-03
Applicant: Japan Display Inc.
Inventor： Yukio Tanaka , Daiichi Suzuki , Kenji Nakao
IPC: G09G3/36
CPC classification number: G09G3/3614 , G02F1/133345 , G02F1/133528 , G02F1/1337 , G02F1/134336 , G02F1/13439 , G02F1/136286 , G02F1/1368 , G02F2001/133531 , G02F2001/133738 , G02F2001/134372 , G02F2201/121 , G02F2201/123 , G09G3/3648 , G09G2300/0426 , G09G2320/0257 , G09G2330/021 , G09G2340/0435
Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, a driver and a control circuit. The control circuit is configured to cause the driver to carry out one of an ordinary driving and an intermittent driving, which is set by switching. The control circuit supplies signals to a plurality of pixel electrodes of each of columns of the pixel electrodes in each of frame periods in the intermittent driving, the supplied signals having polarities inverted in units of at least one row.
Abstract translation: 根据一个实施例，液晶显示装置包括第一基板，第二基板，液晶层，驱动器和控制电路。 控制电路被配置为使驾驶员执行通过切换设定的普通驾驶和间歇驾驶中的一种。 控制电路在间歇驱动中的每个帧周期中向像素电极的列中的多个像素电极提供信号，所提供的信号具有以至少一行为单位的极性反转。
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公开(公告)号：US09552784B2
公开(公告)日：2017-01-24
申请号：US14449444
申请日：2014-08-01
Applicant: Japan Display Inc.
Inventor： Daiichi Suzuki , Yukio Tanaka , Kenji Nakao , Kazuhiro Nishiyama , Shinichi Komura , Shinichiro Oka , Mika Oiwa
CPC classification number: G09G3/3614 , G09G3/3648 , G09G2310/0281 , G09G2310/06 , G09G2320/0247 , G09G2330/021 , G09G2340/0435
Abstract: According to one embodiment, a lateral electric-field type of liquid crystal display device includes a display panel including a plurality of liquid crystal pixels arranged in a matrix, and a controller configured to perform intermittent driving to rewrite an image signal to the liquid crystal pixels, wherein a frame frequency falls within a range of 10 Hz to 20 Hz, and an absolute value of a flexo coefficient (e11, e33) of a liquid crystal applied to the liquid crystal pixels is 1.6 pC/m or less.
Abstract translation: 根据一个实施例，液晶显示装置的横向电场型包括：显示面板，包括以矩阵形式排列的多个液晶像素;以及控制器，被配置为执行间歇驱动以将图像信号重写到液晶像素 其中帧频落在10Hz至20Hz的范围内，并且施加到液晶像素的液晶的柔性系数（e11，e33）的绝对值为1.6pC / m以下。
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公开(公告)号：US10317761B2
公开(公告)日：2019-06-11
申请号：US15172829
申请日：2016-06-03
Applicant: Japan Display Inc.
Inventor： Yukio Tanaka , Daiichi Suzuki , Takashi Nakamura , Masahiro Tada , Youichi Asakawa
IPC: G02F1/1368 , G02F1/1362 , H01L27/12 , H01L29/417 , H01L29/786
Abstract: A liquid crystal display device according to an aspect of the invention includes a display region having a plurality of sub pixels. The sub pixels each include a pixel electrode and a thin film transistor electrically coupled to the pixel electrode. A transient leak current of each thin film transistor included in the sub pixels at both ends of the display region among the sub pixels provided on a line passing through the center of the display region in plan view is smaller than a transient leak current of each thin film transistor included in the sub pixels in a central portion including the center.
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公开(公告)号：US09997120B2
公开(公告)日：2018-06-12
申请号：US14680140
申请日：2015-04-07
Applicant: Japan Display Inc.
Inventor： Yukio Tanaka , Daiichi Suzuki , Kenji Nakao
IPC: G09G3/36
CPC classification number: G09G3/3614 , G09G3/3648 , G09G3/3677 , G09G2310/0202 , G09G2320/0247 , G09G2330/021 , G09G2340/0435
Abstract: When an intermittent driving mode is carried out in a TFT using LIPS and α-Si for a pixel transistor, a flicker easily occurs. A display device includes a TFT including a gate, a source, and a drain; a signal line connected to the source; a pixel capacitance connected to the drain; a first power supply configured to supply a potential that breaks electricity conducted between the source and the drain to the gate; and a switch configured to supply a potential of the first power supply to the gate. The display device includes a scan period and a dwell period. The switch is turned on in the scan period, and the switch is turned off in the dwell period.
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Patent Agency Ranking
公开(公告)号：US09927644B2
公开(公告)日：2018-03-27
申请号：US15413795
申请日：2017-01-24
Applicant: Japan Display Inc.
Inventor： Toshiki Kaneko , Takashi Nakamura , Masahiro Tada , Yukio Tanaka , Hiroyuki Kimura , Osamu Itou
IPC: G02F1/1333 , G02F1/1343 , G02F1/1362 , G02F1/1368 , G09G3/36
CPC classification number: G02F1/133345 , G02F1/134336 , G02F1/134363 , G02F1/13439 , G02F1/1362 , G02F1/136286 , G02F1/1368 , G02F2001/133397 , G02F2201/121 , G02F2201/123 , G02F2201/40 , G02F2202/42 , G09G3/3648 , G09G2300/0465 , G09G2310/08 , G09G2320/0247 , G09G2330/023
Abstract: There is provided a high-definition liquid crystal display device that can prevent flicker due to a reduction in the pixel potential in a low-frequency drive of about 10 Hz to reduce power consumption. The pixel has a TFT formed of Poly-Si as a switching element. In the pixel, a capacitance insulating film is formed on a planar first electrode on which a comb-shaped second electrode is fanned. When the film thickness of the insulating film is d and the dielectric constant at 10 Hz frequency is ∈, it is given that ∈d≥5×10−6 m at 10 Hz frequency. The capacitance insulating film does not have a hysteresis characteristic. The refractive index of the capacitance insulating film with respect to a light of a wavelength of 632.8 nm is 1.7 to 2.0.
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公开(公告)号：US09842555B2
公开(公告)日：2017-12-12
申请号：US15204676
申请日：2016-07-07
Applicant: Japan Display Inc.
Inventor： Daiichi Suzuki , Yukio Tanaka , Kenji Nakao , Kazuhiro Nishiyama , Shinichi Komura , Shinichiro Oka , Mika Oiwa
IPC: G09G3/36 , G02F1/1337 , G02F1/1368 , G02F1/1343
CPC classification number: G09G3/3648 , G02F1/1337 , G02F1/134363 , G02F1/1368 , G02F2001/134372 , G09G3/3614 , G09G2300/0426 , G09G2320/0247 , G09G2330/021 , G09G2340/0435
Abstract: According to one embodiment, a lateral electric-field type of liquid crystal display device includes a display panel and a controller, wherein a frame frequency falls within a range of 1 Hz to 10 Hz, an off-leak current of each of the TFTs has a value of 1×10−15 A or less, a resistivity of a liquid crystal and a resistivity of an alignment film both fall within one of a first range and a second range, the first range being 1×1013 to 5×1013 Ω·cm, the second range being 5×1013 to 5×1014 Ω·cm, and a relationship of “R1× C1≈R2×C2” is satisfied, where R1 is a resistance and C1 is a capacity with respect to each pixel, R2 is a resistance and C2 is a capacity with respect to each pixel.
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公开(公告)号：US20170184929A1
公开(公告)日：2017-06-29
申请号：US15389941
申请日：2016-12-23
Applicant: Japan Display Inc.
Inventor： Daiichi SUZUKI , Yoshifumi Saeki , Yukio Tanaka , Noboru Kunimatsu , Hidehiro Sonoda , Masahiro Kosuge
IPC: G02F1/1343 , G02F1/133 , G02F1/1337
CPC classification number: G02F1/134363 , G02F1/13306 , G02F1/1337 , G02F2001/134372 , G02F2201/121 , G02F2201/123
Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal display panel which includes a pixel electrode, a liquid crystal layer and an alignment film, and a driver. The driver drives the pixel electrode at a drive frequency of 1 to 20 Hz. The alignment film has a resistivity of 5×1014 Ω·cm or more.
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公开(公告)号：US09390673B2
公开(公告)日：2016-07-12
申请号：US14032523
申请日：2013-09-20
Applicant: Japan Display Inc.
Inventor： Yukio Tanaka , Toshiyuki Higano , Kenji Nakao , Hirofumi Wakemoto
CPC classification number: G09G3/3614 , G09G3/2018 , G09G3/3648 , G09G3/3696 , G09G2300/0426 , G09G2320/046 , G09G2330/021
Abstract: According to one embodiment, a liquid crystal display device includes an array substrate, a counter substrate, a liquid crystal layer and a driving unit. The driving unit is configured to perform polarity inversion driving by applying, to the pixel electrode, positive and negative video signals. When applying the video signals to the pixel electrode, the driving unit superposes a correction signal corresponding to a polarity inversion frequency and the gray level on the video signals in advance.
Abstract translation: 根据一个实施例，液晶显示装置包括阵列基板，对向基板，液晶层和驱动单元。 驱动单元被配置为通过向像素电极施加正和负视频信号来执行极性反转驱动。 当将视频信号施加到像素电极时，驱动单元预先将对应于极性反转频率和灰度级的校正信号叠加在视频信号上。
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公开(公告)号：US20160035322A1
公开(公告)日：2016-02-04
申请号：US14809764
申请日：2015-07-27
Applicant: Japan Display Inc.
Inventor： Yukio Tanaka , Daiichi Suzuki
CPC classification number: G09G3/3648 , G09G3/3614 , G09G3/3677 , G09G2300/0426 , G09G2310/065 , G09G2310/08 , G09G2320/0219 , G09G2320/0247 , G09G2330/021 , G09G2340/0435
Abstract: Provided is an FFS mode liquid crystal display device capable of preventing the occurrence of flicker when the frame frequency is reduced to 30 to 1 Hz from the conventional frame frequency of 60 Hz in order to reduce the power consumption. In the FFS mode liquid crystal display device, a comb-shaped second electrode is placed on a planar first electrode through an insulating film. When the period of rewriting a video signal to a pixel is one frame, the frame is configured with a first scanning period, a second scanning period, and a break period. The voltage supplied to the pixel electrode in the first scanning period is granter than the voltage supplied to the pixel electrode in the second scanning period with respect to the same video signal, and has the same polarity as the polarity of the voltage supplied to the pixel in the second scanning period.
Abstract translation: 提供了一种FFS模式液晶显示装置，其能够防止当从60Hz的常规帧频将帧频降低到30Hz至1Hz时发生闪烁，以便降低功耗。 在FFS模式的液晶显示装置中，通过绝缘膜将梳状的第二电极配置在平面的第一电极上。 当向像素重写视频信号的周期是一帧时，帧被配置有第一扫描周期，第二扫描周期和断点周期。 在第一扫描周期中提供给像素电极的电压比在第二扫描周期中相对于相同视频信号提供给像素电极的电压大，并且具有与提供给像素的电压的极性相同的极性 在第二扫描期间。
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