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公开(公告)号：US20230350256A1
公开(公告)日：2023-11-02
申请号：US18202557
申请日：2023-05-26
发明人： Kouhei TOYOTAKA , Kazunori WATANABE , Susumu KAWASHIMA , Kei TAKAHASHI , Koji KUSUNOKI , Masataka NAKADA , Ami SATO
IPC分类号： G02F1/1368 , G02F1/1362
CPC分类号： G02F1/1368 , G02F1/136227
摘要： A liquid crystal display device with a high aperture ratio is provided. The display device includes a transistor, a first insulating layer, a second insulating layer, a third insulating layer, a first conductive layer, a pixel electrode, a common electrode, and a liquid crystal layer in a pixel. The first insulating layer is positioned over a channel formation region of the transistor. The first conductive layer is positioned over the first insulating layer. The second insulating layer is positioned over the transistor, the first insulating layer, and the first conductive layer. The pixel electrode is positioned over the second insulating layer, the third insulating layer is positioned over the pixel electrode, the common electrode is positioned over the third insulating layer, and the liquid crystal layer is positioned over the common electrode. The common electrode includes a region overlapping with the first conductive layer with the pixel electrode positioned therebetween. The pixel includes a first connection portion where the pixel electrode is electrically connected to the transistor and a second connection portion where the first conductive layer is electrically connected to the common electrode. The first conductive layer, the pixel electrode, and the common electrode each have a function of transmitting visible light.
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公开(公告)号：US20230326396A1
公开(公告)日：2023-10-12
申请号：US18018051
申请日：2021-07-30
IPC分类号： G09G3/32 , H10K59/131
CPC分类号： G09G3/32 , H10K59/131 , G09G2300/0819 , G09G2300/0842 , G09G2310/02 , G09G2310/08 , G09G2330/021
摘要： A display apparatus having a wide range of threshold voltage compensation function is provided. In the display apparatus, a p-channel transistor is used as a driving transistor of the light-emitting device. Discharging is performed through a source-drain path while constant voltage is supplied to a gate so that Vth is extracted between the gate and the source. In addition, when a drain potential is set to the sum of forward voltage and a cathode potential of the light-emitting device or a potential sufficiently lower than the sum, it is possible to continue the discharging even when Vth is positive voltage. That is, compensation can be performed even in the case where Vth variation occurs from positive voltage to negative voltage.
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公开(公告)号：US20230255060A1
公开(公告)日：2023-08-10
申请号：US18012079
申请日：2021-06-28
IPC分类号： H10K59/121 , H10K59/65
CPC分类号： H10K59/1213 , H10K59/65 , H10K59/40
摘要： A display apparatus suitable for wide-grayscale display is provided. The display apparatus includes, in a pixel, two driving transistors and a light-emitting device that are connected in series. One of the transistors is a p-channel transistor and the other of the transistors is an n-channel transistor, and switching therebetween is performed for driving. Such a configuration can inhibit the change in a gate-source voltage in display with a high grayscale level. In addition, the use of a transistor containing a metal oxide in a channel formation region as the n-channel transistor enables an increase in display characteristics in display with a low grayscale level.
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公开(公告)号：US20220344443A1
公开(公告)日：2022-10-27
申请号：US17642425
申请日：2020-09-09
发明人： Shunpei YAMAZAKI , Koji KUSUNOKI , Kazunori WATANABE , Susumu KAWASHIMA , Daisuke KUBOTA , Taisuke KAMADA , Ryo HATSUMI
摘要： The resolution of a display apparatus having a light detection function is increased. A display apparatus includes a plurality of transistors and a light-emitting and light-receiving device in a subpixel. The light-emitting and light-receiving device has a function of emitting light of a first color and a function of receiving light of a second color. One of a source and a drain of a first transistor is electrically connected to a first wiring, and the other thereof is electrically connected to a gate of a second transistor. One electrode of the light-emitting and light-receiving device is electrically connected to one of a source and a drain of the second transistor, one of a source and a drain of a third transistor, and one of a source and a drain of a fifth transistor. One of a source and a drain of a fourth transistor is electrically connected to a second wiring, and the other thereof is electrically connected to the other of the source and the drain of the third transistor.
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公开(公告)号：US20220292871A1
公开(公告)日：2022-09-15
申请号：US17639632
申请日：2020-09-02
摘要： To provide an imaging device having a function of biometric authentication and a function of a touch sensor or a near touch sensor. The imaging device includes pixels, current mirror circuits, and CDS circuits. The pixels, the current mirror circuits, and the CDS circuits are electrically connected to read lines. The current mirror circuit includes a first and a second transistor. One of a source and a drain of the first transistor is electrically connected to the read line, and a power supply potential is supplied to the other of a source and a drain of the second transistor. The imaging device outputs imaging data written to the pixel, as a first signal, to the read line in a first period, and then, resets the imaging data and outputs a second signal from the pixel to the read line in a second period. In the first period, a first potential is supplied to terminals, and in the second period, a second potential is supplied to terminals. A difference between the second potential and the power supply potential is greater than a difference between the first potential and the power supply potential.
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公开(公告)号：US20220285461A1
公开(公告)日：2022-09-08
申请号：US17632340
申请日：2020-07-27
发明人： Ryo Hatsumi , Taisuke KAMADA , Kazunori WATANABE , Daisuke KUBOTA
摘要： A display device having both a function of a touch sensor and a function of fingerprint recognition is provided. The display device includes a first display region and a second display region. The first display region and the second display region are provided in contact with each other. The first display region includes a plurality of first light-emitting elements and a plurality of first photodetectors. The second display region includes a plurality of second light-emitting elements and a plurality of second photodetectors. The first photodetector has a function of receiving first light emitted from the first light-emitting element. The second photodetector has a function of receiving second light emitted from the second light-emitting element. The first light-emitting elements and the first photodetectors are arranged in a matrix in the first display region. The second light-emitting elements and the second photodetectors are arranged in a matrix in the second display region. The second photodetectors are arranged in a higher density than the first photodetectors.
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公开(公告)号：US20220254860A1
公开(公告)日：2022-08-11
申请号：US17730583
申请日：2022-04-27
IPC分类号： H01L27/32 , G09G3/3233 , G09G3/3275 , G09G3/20
摘要： A display device that can easily achieve higher definition is provided The display device includes a pixel, a first wiring, and a second wiring. The pixel includes first to fourth transistors, a first capacitor, and a light-emitting element. One of a source and a drain of the first transistor is connected to the first wiring, and the other of the source and the drain of the first transistor is connected to a gate of the second transistor and to the first capacitor. The light-emitting element is connected to one of a source and a drain of the second transistor. The first wiring is supplied with a first data potential. The second wiring is supplied with a second data potential and a reset potential in different periods. The third transistor supplies the second data potential to the first capacitor. The fourth transistor supplies the reset potential to the light-emitting element.
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公开(公告)号：US20220246694A1
公开(公告)日：2022-08-04
申请号：US17623798
申请日：2020-06-23
发明人： Kazunori WATANABE , Koji KUSUNOKI , Susumu KAWASHIMA , Taisuke KAMADA , Ryo HATSUMI , Daisuke KUBOTA
摘要： A display apparatus having a photosensing function is provided. The display apparatus includes a first pixel circuit and a second pixel circuit. The first pixel circuit includes a light-receiving device, a first transistor, and a second transistor. The second pixel circuit includes a light-emitting device. The light-receiving device includes a first pixel electrode, an active layer, and a common electrode. The light-emitting device includes a second pixel electrode, a light-emitting layer, and the common electrode. The active layer is positioned over the first pixel electrode and includes a first organic compound. The light-emitting layer is positioned over the second pixel electrode and includes a second organic compound different from the first organic compound. The common electrode includes a portion overlapping with the first pixel electrode with the active layer therebetween and a portion overlapping with the second pixel electrode with the light-emitting layer therebetween. The first transistor includes low-temperature polysilicon as a semiconductor layer and the second transistor includes a metal oxide as a semiconductor layer.
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公开(公告)号：US20210343243A1
公开(公告)日：2021-11-04
申请号：US17273818
申请日：2019-08-30
IPC分类号： G09G3/3258
摘要： A display device that can correct the threshold voltage of a driving transistor without a correction of image data is provided. A display device including a pixel provided with a driving transistor, a display element, and a memory circuit and a correction data generation circuit is related. One of a source and a drain of the driving transistor is electrically connected to one electrode of the display element, and a gate of the driving transistor is electrically connected to the memory circuit. In a first period, the correction data generation circuit generates correction data that is data for correcting the threshold voltage of the driving transistor. In a second period, first data is written to the memory circuit. In a third period, second data is supplied to the pixel, whereby third data in which the second data is added to the first data is generated. In a fourth period, an image corresponding to the third data is displayed by the display element.
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公开(公告)号：US20210158489A1
公开(公告)日：2021-05-27
申请号：US16636555
申请日：2018-08-01
发明人： Kazunori WATANABE , Koji KUSUNOKI
摘要： A display device having a high display quality is provided. The display device is formed such that for each target block that is to be displayed, different super-resolution processing are applied. Specifically, an image analysis unit analyzes image data that is input, and a target block within an image to be displayed is specified. In the image analysis unit, data of the target block is analyzed using a learned neural network, and an image dividing unit is controlled to divide the image data according to the analysis results. In the image analysis unit, in order to perform different super processing that applies to each image data that has been divided according to the analysis results, an image calculation processing unit including a plurality of super-resolution processing circuits is controlled.
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