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公开(公告)号：US20240337881A1
公开(公告)日：2024-10-10
申请号：US18626963
申请日：2024-04-04
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Hajime KIMURA
IPC: G02F1/1343 , G02F1/1333 , G02F1/1335 , G02F1/13357 , G02F1/1345 , G02F1/1362 , G02F1/1368 , G09G3/34 , G09G3/36 , H01L27/12
CPC classification number: G02F1/1343 , G02B6/0051 , G02B6/0055 , G02F1/134363 , G02F1/1368 , G09G3/342 , G09G3/3648 , G02F1/133371 , G02F1/133502 , G02F1/133524 , G02F1/133528 , G02F1/133553 , G02F1/133555 , G02F1/133603 , G02F1/133604 , G02F1/134318 , G02F1/134372 , G02F1/13454 , G02F1/136213 , G02F1/136227 , G02F1/136231 , G02F2201/124 , G02F2201/50 , G09G2310/024 , G09G2320/0252 , G09G2340/16 , H01L27/1214 , H01L27/1225
Abstract: A pixel electrode or a common electrode is a light-transmissive conductive film; therefore, it is formed of ITO conventionally. Accordingly, the number of manufacturing steps and masks, and manufacturing cost have been increased. An object of the present invention is to provide a semiconductor device, a liquid crystal display device, and an electronic appliance each having a wide viewing angle, less numbers of manufacturing steps and masks, and low manufacturing cost compared with a conventional device. A semiconductor layer of a transistor, a pixel electrode, and a common electrode of a liquid crystal element are formed in the same step.
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公开(公告)号：US12112712B2
公开(公告)日：2024-10-08
申请号：US17638780
申请日：2021-04-08
Inventor： Lijin Zhao , Yu Zhang , Shixin Geng , Guangyun Tong , Zhuolong Li , Miao Liu , Huiyan Li , Fan Yang
CPC classification number: G09G3/3413 , G09G3/3426 , G09G3/3648 , H05K1/141 , G09G2310/08 , G09G2320/064 , G09G2320/0666 , G09G2360/16 , H05K2201/10136
Abstract: A backlight driving board includes a main circuit board, and a photosensitive device, a backlight controller and a first port that are disposed on the main circuit board. The photosensitive device is configured to sense brightness and color temperature of a light source, and output brightness data and color temperature data. The backlight controller is coupled to the photosensitive device, and configured to receive the brightness data and adjust light-emitting brightness of the light source according to the brightness data. The first port is coupled to the photosensitive device, and configured to be coupled to a system board, receive the color temperature data, and transmit the color temperature data to the system board, such that the system board adjusts color temperature of a picture displayed by a display panel according to the color temperature data.
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公开(公告)号：US12112698B2
公开(公告)日：2024-10-08
申请号：US17977023
申请日：2022-10-31
Applicant: Sony Group Corporation
Inventor： Katsuhide Uchino , Junichi Yamashita , Tetsuro Yamamoto
IPC: G09G3/3233 , G09G3/30 , G09G3/3258 , G09G3/34 , G09G3/36 , H05B45/60
CPC classification number: G09G3/3233 , G09G3/30 , G09G3/3258 , G09G3/3426 , G09G3/36 , G09G3/3648 , H05B45/60 , G09G2300/043 , G09G2300/0809 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2310/0256 , G09G2320/0233 , G09G2320/043 , G09G2320/045
Abstract: A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes. The circuit includes a source of a TFT used as a drive transistor that is connected to an anode of a light emitting element, and a drain of the TFT is connected to a power source potential. A capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT used as a switching transistor.
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公开(公告)号：US12105384B2
公开(公告)日：2024-10-01
申请号：US18380817
申请日：2023-10-17
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hiroyuki Miyake , Makoto Kaneyasu
IPC: H01L29/786 , G02F1/1343 , G02F1/1362 , G09F9/30 , G09G3/36 , H01L27/12 , G02F1/13357 , G02F1/136
CPC classification number: G02F1/1343 , G02F1/136286 , G09F9/30 , G09G3/3648 , H01L27/1225 , H01L29/78648 , H01L29/7869 , H01L29/78696 , G02F1/133602 , G02F1/13606 , G09G2300/0439
Abstract: A display device in which parasitic capacitance between wirings can be reduced is provided. Furthermore, a display device in which display quality is improved is provided. Furthermore, a display device in which power consumption can be reduced is provided.
The display device includes a signal line, a scan line, a first electrode, a second electrode, a third electrode, a first pixel electrode, a second pixel electrode, and a semiconductor film. The signal line intersects with the scan line, the first electrode is electrically connected to the signal line, the first electrode has a region overlapping with the scan line, the second electrode faces the first electrode, the third electrode faces the first electrode, the first pixel electrode is electrically connected to the second electrode, the second pixel electrode is electrically connected to the third electrode, the semiconductor film is in contact with the first electrode, the second electrode, and the third electrode, and the semiconductor film is provided between the scan line and the first electrode to the third electrode.
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公开(公告)号：US12099278B2
公开(公告)日：2024-09-24
申请号：US18500216
申请日：2023-11-02
Applicant: Japan Display Inc.
Inventor： Gen Koide
IPC: G02F1/1345 , G02F1/1333 , G02F1/1343 , G06F3/041 , G06F3/044 , G09G3/36 , G02F1/1362 , G02F1/1368
CPC classification number: G02F1/13454 , G02F1/13338 , G02F1/134363 , G06F3/0412 , G06F3/0416 , G06F3/04164 , G06F3/04184 , G06F3/044 , G06F3/0445 , G06F3/0446 , G09G3/3611 , G09G3/3648 , G09G3/3655 , G02F1/134318 , G02F1/136218 , G02F1/1368 , G02F2201/121 , G02F2201/123 , G02F2201/56 , G06F2203/04107 , G09G2300/0426 , G09G2300/08
Abstract: According to one embodiment, a display device includes a first common electrode and a second common electrode arranged in a first direction, a first switch unit selectively supplying a first drive signal or a second drive signal different from the first drive signal to the first common electrode, and a second switch unit selectively supplying the first drive signal or the second drive signal to the second common electrode, wherein the second common electrode and the first switch unit are arranged in a second direction intersecting the first direction, the first switch unit comprises a first switch circuit and a second switch circuit arranged in the second direction.
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公开(公告)号：US20240302699A1
公开(公告)日：2024-09-12
申请号：US18663356
申请日：2024-05-14
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hajime KIMURA , Atsushi UMEZAKI
IPC: G02F1/1362 , G02F1/1333 , G02F1/1339 , G02F1/1343 , G02F1/1368 , G02F1/167 , G09G3/00 , G09G3/36 , H01L27/12 , H01L29/423 , H01L29/786
CPC classification number: G02F1/13624 , G02F1/136259 , G02F1/136286 , G02F1/1368 , G09G3/006 , G09G3/3648 , H01L27/1225 , H01L27/124 , H01L27/1255 , H01L29/7869 , G02F1/133302 , G02F1/133345 , G02F1/1339 , G02F1/134309 , G02F1/13439 , G02F1/136254 , G02F1/167 , G09G2230/00 , G09G2310/0251 , H01L29/42384
Abstract: An object is to provide a display device that performs accurate display. A circuit is formed using a transistor that includes an oxide semiconductor and has a low off-state current. A precharge circuit or an inspection circuit is formed in addition to a pixel circuit. The off-state current is low because the oxide semiconductor is used. Thus, it is not likely that a signal or voltage is leaked in the precharge circuit or the inspection circuit to cause defective display. As a result, a display device that performs accurate display can be provided.
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公开(公告)号：US12078893B2
公开(公告)日：2024-09-03
申请号：US18108694
申请日：2023-02-13
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hajime Kimura
IPC: G02F1/1343 , G02F1/1333 , G02F1/1362 , G06F3/041 , G09G3/36
CPC classification number: G02F1/1343 , G02F1/133345 , G02F1/13338 , G02F1/136286 , G06F3/0412 , G09G3/36 , G09G3/3648 , G02F1/134309 , G02F1/134318 , G02F1/134363 , G02F1/134372 , G09G2300/0439 , G09G2310/04 , G09G2320/0626 , G09G2320/0666 , G09G2340/0435 , G09G2360/144
Abstract: A novel display panel that is highly convenient or reliable is provided. The display panel includes a first pixel, a second pixel, and a functional layer. The first pixel includes a first display element, and the second pixel includes a second display element. The functional layer includes a first pixel circuit and a second pixel circuit. The first display element includes a first electrode, a second electrode, and a layer containing a liquid crystal material. A first distance is provided between the first electrode and the functional layer. A second distance is provided between the second electrode and the functional layer. The first electrode and the second electrode each include a region overlapping with the layer containing a liquid crystal material. The second distance is shorter than the first distance. The second display element includes a third electrode, a fourth electrode, and the layer containing a liquid crystal material. A third distance is provided between the third electrode and the functional layer. A fourth distance is provided between the fourth electrode and the functional layer. The fourth distance is shorter than the third distance and longer than the first distance.
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公开(公告)号：US20240282278A1
公开(公告)日：2024-08-22
申请号：US18428122
申请日：2024-01-31
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Atsushi UMEZAKI
CPC classification number: G09G3/3648 , G09G3/20 , G09G3/3677 , G09G2300/0426 , G09G2310/0267 , G09G2310/0286 , G09G2320/043 , G09G2352/00 , H03K17/04
Abstract: It is an object to provide a display device which can favorably display a image without delayed or distorted signals. The display device includes a first gate driver and a second gate driver. The first gate driver and the second gate driver each include a plurality of flip flop circuits and a plurality of transfer signal generation circuits. Both the flip flop circuit and the transfer signal generation circuit are circuits which output a signal inputted to a first input terminal with a half clock cycle delay. In addition, an output terminal of the transfer signal generation circuit is directly connected to a first input terminal of the flip flop circuit in the next stage. Therefore, delay and distortion of the signal which is inputted from the transfer signal generation circuit to the flip flop circuit can be reduced.
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公开(公告)号：US20240276635A1
公开(公告)日：2024-08-15
申请号：US18022922
申请日：2022-05-26
Inventor： Zhenzhou Xing , Xuanxuan Qiao , Rui Wang , Jianjun Wang , Tao Liu
CPC classification number: H05K1/0259 , G09G3/3648 , H05K1/18 , G09G2330/04 , G09G2330/06 , H05K2201/10128
Abstract: Disclosed are a printed circuit board, a display module and a driving method thereof, and a display device. The printed circuit board includes a blank area and an encapsulation area. The printed circuit board includes a first metal layer including a first metal pattern and a second metal pattern separated from each other, a first pad connected to the first metal pattern, and a second pad connected to the second metal pattern. The first metal pattern is located in the blank area, and the second metal pattern is located in the encapsulation area. The first pad and the second pad are configured to be connected to an electrostatic isolation device, and the second metal pattern is configured to be connected to a functional electronic device.
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公开(公告)号：US20240256067A1
公开(公告)日：2024-08-01
申请号：US18630161
申请日：2024-04-09
Applicant: Japan Display Inc.
Inventor： Hiroyuki ABE , Yoshinori AOKI , Kazune MATSUMURA , Masateru MORIMOTO
IPC: G06F3/041 , G02F1/1333 , G02F1/1343 , G06F3/044 , G09G3/36
CPC classification number: G06F3/0412 , G06F3/0416 , G06F3/044 , G06F3/0443 , G06F3/0446 , G02F1/13338 , G02F1/134309 , G02F2201/56 , G09G3/3648 , G09G2300/0413 , G09G2300/0426 , G09G2310/0232 , G09G2310/0281
Abstract: According to an aspect, a display device with a sensor includes: a substrate including a display region and a peripheral region on a periphery of the display region; detection electrodes arranged in a row-column configuration in the display region; and detection lines coupled to the respective detection electrodes. A shape of the substrate in a plan view includes a curve of a curved portion. The detection electrodes include a first electrode and a second electrode having a shape different from that of the first electrode in a plan view. The second electrode is juxtaposed with the curved portion. The detection lines each include a first line coupled to the first electrode and a second line coupled to the second electrode. The second line passes from the display region across the peripheral region and extends to a position overlapping with the second electrode in a plan view.
