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1. 发明授权

US11910671B2 Display device and method for driving same 有权
公开(公告)号：US11910671B2
公开(公告)日：2024-02-20
申请号：US17436537
申请日：2019-03-28
申请人： SHARP KABUSHIKI KAISHA
发明人： Keiichi Yamamoto , Kohhei Tanaka , Takayuki Nishiyama
IPC分类号： H01L23/00 , H10K59/131 , G09G3/3266 , G09G3/3275 , H10K59/121
CPC分类号： H10K59/131 , G09G3/3266 , G09G3/3275 , H10K59/1213 , H10K59/1216 , G09G2310/0278
摘要： With respect to a display device having an external compensation function, a monitor time can be shortened without increasing the number of wiring lines. A pixel circuit in an i-th row and a j-th column includes an organic EL element (display element), a writing control transistor, a drive transistor, a monitor control transistor, and a holding capacitor. A control terminal of the drive transistor is connected to a data signal line S(j) in the j-th column via the write control transistor. The monitor control transistor includes a first conduction terminal connected to a second conduction terminal of the drive transistor, and a second conduction terminal connected to a data signal line S(j+1) in a (j+1)-th column.

2. 发明授权

US11226529B2 Liquid crystal display device 有权
公开(公告)号：US11226529B2
公开(公告)日：2022-01-18
申请号：US16935239
申请日：2020-07-22
申请人： Sharp Kabushiki Kaisha
发明人： Keisuke Yoshida , Kohhei Tanaka
IPC分类号： G02F1/136 , G02F1/1362 , G02F1/1368 , G02F1/1333 , G02F1/1339 , G02F1/1335 , G02F1/1337
摘要： A liquid crystal display device includes an active matrix substrate, a counter substrate, and a liquid crystal layer. The active matrix substrate includes a top gate type oxide semiconductor TFT a plurality of gate wiring lines a plurality of source and an interlayer insulating layer The counter substrate includes a plurality of columnar spacers provided on a second substrate. Each columnar spacer is disposed in an intersecting region where the gate wiring line and the source wiring line intersect. A front face of the active matrix substrate on the liquid crystal layer side includes a plurality of first ridges overlapping the plurality of gate wiring lines and a plurality of second ridges overlapping the plurality of source wiring lines.

3. 发明授权

US11131895B2 Display device 有权
公开(公告)号：US11131895B2
公开(公告)日：2021-09-28
申请号：US16810979
申请日：2020-03-06
申请人： Sharp Kabushiki Kaisha
发明人： Kohhei Tanaka
IPC分类号： G02F1/1368 , G02F1/1362 , G02F1/1333 , G02F1/1343 , H01L27/32 , H01L51/52 , H01L27/12 , H01L29/24 , H01L29/786
摘要： A display device includes: an active matrix substrate including pixels arrayed in a matrix shape including rows and columns, and scanning wiring lines extending in a row direction and signal wiring lines extending in a column direction, wherein the active matrix substrate includes, in each of pixels, a TFT, a pixel electrode formed of a transparent conductive material and electrically connected to the TFT, a color filter located between the TFT and the pixel electrode, and a connecting electrode formed of a transparent conductive material and electrically connecting the TFT to the pixel electrode, the color filter includes a first color filter layer provided on the TFT and including a first contact hole, and a second color filter layer provided on the first color filter layer and including a second contact hole, and the first contact hole and the second contact hole do not overlap with each other.

4. 发明授权

US10679578B2 Display device having driving circuitry with driving gate lines 有权
公开(公告)号：US10679578B2
公开(公告)日：2020-06-09
申请号：US16147414
申请日：2018-09-28
申请人： SHARP KABUSHIKI KAISHA
发明人： Kohhei Tanaka , Kaoru Yamamoto , Tokihiro Yokono
IPC分类号： G09G3/36 , G06F3/041 , G06F3/044
摘要： The display device includes drive circuits 301 provided in correspondence to the gate lines, respectively, and alternately switches a scanning period for scanning the gate lines and a non-scanning period during one vertical scanning period. The drive circuit 301 includes netA(n), an output switching element M5 connected to netA(n), and a reset circuit R. The output switching element M5 applies a selection voltage to the gate line GLn. The potential of netA(n) changes between a first potential that is equal to or higher than a threshold voltage of the output switching element M5, and a second potential that is lower than the first potential. In the drive circuit 301 wherein a period while netA(n) thereof has the second potential overlaps with the non-scanning period, the reset circuit R resets the potential of netA(n) to the second potential, before the resumption of the scanning period after the non-scanning period.

5. 发明授权

US10629111B2 Display device 有权
公开(公告)号：US10629111B2
公开(公告)日：2020-04-21
申请号：US16159613
申请日：2018-10-13
申请人： SHARP KABUSHIKI KAISHA
发明人： Keiichi Yamamoto , Kohhei Tanaka , Takayuki Nishiyama , Tomohiro Kimura
IPC分类号： G09G3/20
CPC分类号： G09G3/2003 , G09G3/20 , G09G3/2074 , G09G3/2085 , G09G2300/0426 , G09G2310/0232 , G09G2310/0264 , G09G2310/08 , G09G2340/0414 , G09G2340/0421
摘要： A display device includes: a pixel region that includes a plurality of pixels arranged in matrix; a plurality of lines connected to the pixels, the lines including a plurality of gate lines that extend in a first direction and a plurality of source lines that extend in a second direction; and a driving unit that includes a gate driver that drives the gate lines, and a source driver that drives the source lines. In this display device, the pixels have a uniform size, and the pixel region has a low-resolution area in which m pixels (m is a natural number equal to or more than 2) adjacent in at least one of the first direction and the second direction display an identical gray level at all times.

6. 发明授权

US10235956B2 Active-matrix substrate and display device including the same 有权
公开(公告)号：US10235956B2
公开(公告)日：2019-03-19
申请号：US15305798
申请日：2015-04-21
申请人： Sharp Kabushiki Kaisha
发明人： Kohhei Tanaka , Takayuki Nishiyama , Takeshi Noma , Ryo Yonebayashi
IPC分类号： G09G3/36 , G02F1/133 , G02F1/1368 , G09G3/20 , G02F1/1335 , G02F1/1362
摘要： A technique of, in the case of changing, at predetermined time intervals, a drive circuit for switching a gate line to a selected state, preventing a stopped drive circuit from malfunctioning is provided. Each of a plurality of drive circuits provided for each gate line in an active-matrix substrate includes: a selection circuit unit including an output switching element that is turned on to apply a voltage to the gate line in response to a control signal; an internal line connected to a gate terminal of the output switching element and the gate line; and a potential control circuit unit connected to the internal line for controlling a potential of the internal line in response to the control signal. At predetermined time intervals, a signal supply unit: supplies, to at least one of the plurality of drive circuits, a potential control signal so that the potential of the internal line is controlled to be lower than a threshold voltage of the output switching element by the potential control circuit unit; and supplies, to each of the other drive circuits, a drive signal so that a selection voltage is applied to the gate line by the selection circuit unit.

7. 发明授权

US10115369B2 Active matrix substrate, and display device including the active matrix substrate 有权
公开(公告)号：US10115369B2
公开(公告)日：2018-10-30
申请号：US15307040
申请日：2015-04-22
申请人： Sharp Kabushiki Kaisha
发明人： Takeshi Noma , Kohhei Tanaka , Takayuki Nishiyama , Ryo Yonebayashi
IPC分类号： G09G3/36 , G02F1/1362 , G02F1/1368 , G09F9/30 , G09F9/35 , G09G3/20 , G02F1/1335 , G02F1/1333 , G02F1/1343
摘要： To reduce the parasitic capacitance of a driving circuit and definitely switches a gate line to a selection state, an active matrix substrate is provided. The active matrix substrate includes a driving circuit that switches a gate line (13G) to a selection state in a pixel region defined by a source line (15S) and the gate line (13G). The driving circuit includes: a plurality of switching elements including an output switching element (TFT-F) that supplies a selection voltage to the gate line; and an internal line (netA) to which a gate terminal of the output switching element (TFT-F) and at least a first switching element of the switching elements other than the output switching element are connected. The active matrix substrate includes a reduction part (C1 and C2) that reduce the parasitic capacitance of the driving circuit in the pixel region in which at least one of the internal line and the first switching element is located.

8. 发明授权

US09939696B2 Active matrix substrate and display device including active matrix substrate 有权
公开(公告)号：US09939696B2
公开(公告)日：2018-04-10
申请号：US15305394
申请日：2015-04-28
申请人： Sharp Kabushiki Kaisha
发明人： Youhei Nakanishi , Takayuki Nishiyama , Kohhei Tanaka , Takeshi Noma , Ryo Yonebayashi
IPC分类号： G09G3/36 , G02F1/1362 , G02F1/1343 , G02F1/1368 , G09F9/30 , H01L21/822 , H01L27/04 , H01L29/786 , H01L27/02 , H01L27/12
CPC分类号： G02F1/136204 , G02F1/1343 , G02F1/1368 , G09F9/30 , G09G3/3648 , G09G3/3688 , G09G2300/0413 , G09G2300/0426 , G09G2300/08 , G09G2310/08 , G09G2330/04 , G09G2330/08 , H01L21/822 , H01L27/0255 , H01L27/0266 , H01L27/04 , H01L27/1244 , H01L29/786
摘要： Provided is an active matrix substrate that can protected from static electricity, with the frame region being narrowed. An active matrix substrate (20a) includes a plurality of first lines (GL), a plurality of second lines (SL), and a protection part (50). The first lines are formed in a display region (30). The second lines are formed in the display region, and intersect with the first lines. The protection part protects the active matrix substrate from static electricity. The protection part includes a plurality of first protection circuits (50A), and a conductive unit (50B). The first protection circuits are connected to each of the first lines in the display region. The conductive unit is connected to each of the first protection circuits in the display region. Each of the first protection circuits, according to a potential of the first line to which the first protection circuit is connected, allows the first line and the conductive unit to be conductive with each other.

9. 发明授权

US09934742B2 Display panel and display device including same 有权
公开(公告)号：US09934742B2
公开(公告)日：2018-04-03
申请号：US15024042
申请日：2014-08-26
申请人： Sharp Kabushiki Kaisha
发明人： Hidefumi Yoshida , Kohhei Tanaka
IPC分类号： G09G5/02 , G06F3/038 , G09G5/00 , G09G5/10 , G09G3/36 , G02F1/1345 , G02F1/1362 , G02F1/1335
CPC分类号： G09G3/3655 , G02F1/133512 , G02F1/13454 , G02F1/136286 , G02F2201/52 , G09G3/3607 , G09G3/3677 , G09G5/10 , G09G2300/0452 , G09G2300/0465 , G09G2320/0233
摘要： Provided is a display panel that reduces occurrence of display irregularities in a display region even in a case where driving circuits that switch gate lines between selected and non-selected states are provided in the display region. A display panel of the present invention includes an active matrix substrate and a counter substrate, the active matrix substrate being provided with a plurality of gate lines and a plurality of source lines. The active matrix substrate includes, in a display region, a driving circuit provided with respect to each of the gate lines, for switching the gate line between a selected state and a non-selected state. The display panel further includes, in a non-installation region where the driving circuit is not provided, an aperture ratio adjustment member that changes an aperture ratio in the non-installation region stepwise, in order to decrease a difference between a luminance in an installation region where the driving circuit is provided and a luminance in the non-installation region.

10. 发明授权

US09489912B2 Liquid crystal display apparatus and method for driving liquid crystal display apparatus 有权
标题翻译：液晶显示装置及液晶显示装置的驱动方法
公开(公告)号：US09489912B2
公开(公告)日：2016-11-08
申请号：US14411940
申请日：2013-07-01
申请人： Sharp Kabushiki Kaisha
发明人： Akihito Jinda , Mitsuhiro Murata , Kohhei Tanaka , Yosuke Iwata
IPC分类号： G09G5/00 , G09G3/36 , G02F1/1343
CPC分类号： G09G3/3696 , G02F1/134363 , G02F2001/134381 , G09G3/3659 , G09G2300/0426 , G09G2300/0434
摘要： Provided is a liquid crystal display apparatus employing a drive method whereby nonuniform electric field is not generated in pixels. This liquid crystal display apparatus is provided with a first substrate, a first electrode, a second electrode, a second substrate, a common electrode, a counter electrode, a liquid crystal layer, and a drive unit. The drive unit executes drive operations including: operations of setting the potential of the first electrode at a low level, the potential of the second electrode at a high level, and the potential of the counter electrode at the high level; operations of setting the potential at the high level, the potential at the low level, and the potential at the high level; operations of setting the potential at the low level, the potential at the high level, and the potential at the low level; and operations of setting the potential at the high level, the potential at the low level, and the potential at the low level.
摘要翻译：本发明提供一种液晶显示装置，其采用以像素不产生不均匀电场的驱动方法。该液晶显示装置设置有第一基板，第一电极，第二电极，第二基板，公共电极，对电极，液晶层和驱动单元。驱动单元执行驱动操作，包括：将第一电极的电位设定为低电平，将第二电极的电位设定为高电平，将对置电极的电位置于高电平的动作; 将潜力置于高位，潜力处于低水平，潜力处于高位的作战; 将潜力置于低水平，潜力处于高位，潜力处于低水平的作战; 将潜力置于高位，潜力处于低水平，潜力处于低位的作战。

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