公开(公告)号：US20240321205A1

公开(公告)日：2024-09-26

申请号：US18569779

申请日：2022-06-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuki OKAMOTO ,  Tatsuya ONUKI ,  Hidetomo KOBAYASHI ,  Munehiro KOZUMA ,  Takanori MATSUZAKI ,  Susumu KAWASHIMA ,  Yutaka OKAZAKI

IPC: G09G3/3233 ,  H01L27/088 ,  H01L27/12

CPC classification number: G09G3/3233 ,  H01L27/088 ,  H01L27/1225 ,  G09G2300/0426 ,  G09G2300/0852 ,  G09G2330/021

Abstract: The invention of the application is the invention regarding a semiconductor device and a method for driving the semiconductor device. The semiconductor device includes first and second transistors, first to fifth switches, first to third capacitors, and a display element. The first transistor (M2) comprises a back gate, a gate of the first transistor is electrically connected to the first switch (M1), the second switch (M3) and the first capacitor (C1) are positioned between the gate of the first transistor and a source of the first transistor, the back gate of the first transistor is electrically connected to the third switch (M4), the second capacitor (C2) is positioned between the back gate of the first transistor and the source of the first transistor, the source of the first transistor is electrically connected to the fourth switch (M6) and a drain of the second transistor (M5), a gate of the second transistor is electrically connected to the fifth switch (M7), the third capacitor (C3) is positioned between the gate of the second transistor and a source of the second transistor, and the source of the second transistor is electrically connected to the display element (61).

公开(公告)号：US20240290252A1

公开(公告)日：2024-08-29

申请号：US18655975

申请日：2024-05-06

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Satoshi YOSHIMOTO

IPC: G09G3/32 ,  H10K59/131

CPC classification number: G09G3/32 ,  H10K59/131 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/02 ,  G09G2310/08 ,  G09G2330/021

Abstract: 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.

公开(公告)号：US20240248355A1

公开(公告)日：2024-07-25

申请号：US18599770

申请日：2024-03-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu KAWASHIMA ,  Naoto KUSUMOTO

IPC: G02F1/1362 ,  G02F1/1368 ,  H01L27/12

CPC classification number: G02F1/136213 ,  G02F1/13624 ,  G02F1/1368 ,  H01L27/1255

Abstract: A display apparatus having an excellent boosting function is provided. The display apparatus is provided with a pixel having a function of adding data (a boosting function). A capacitor for boosting voltage is provided in the pixel, and data is added by capacitive coupling to be supplied to a display device. The capacitor for boosting voltage and a capacitor for retaining data are placed on top of each other, whereby the capacitance value of the capacitor for boosting voltage can be increased. Thus, the pixel can have an excellent boosting function, without significantly losing the aperture ratio or definition.

公开(公告)号：US20240046857A1

公开(公告)日：2024-02-08

申请号：US18380819

申请日：2023-10-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Kei TAKAHASHI ,  Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kazunori WATANABE

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2330/028

Abstract: The power consumption of a display device is reduced. The power consumption of a driver circuit in a display device is reduced. A pixel included in the display device includes a display element. The pixel is configured to have a function of retaining a first voltage corresponding to a first input pulse signal and a function of driving the display element with a third voltage obtained by addition of a second voltage corresponding to a second input pulse signal to the first voltage.

公开(公告)号：US20230395022A1

公开(公告)日：2023-12-07

申请号：US18033710

申请日：2021-10-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi YOSHIMOTO ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Susumu KAWASHIMA

IPC: G09G3/3233 ,  H10K39/32

CPC classification number: G09G3/3233 ,  H10K39/32 ,  G09G2300/0857 ,  G09G2330/021 ,  G09G2360/14

Abstract: One embodiment of the present invention relates to a common semiconductor apparatus for driving two different circuits. The semiconductor apparatus is capable of switching a plurality of signal potentials and sequentially outputting the plurality of signal potentials to the outside. The semiconductor apparatus can make one of two different circuits arranged in a matrix operate in all the rows and can make the other circuit operate in all the rows or only in a specific row. For example, in the case where the semiconductor apparatus is applied to a row driver that drives pixels of a display device in which sensor elements are incorporated, the operation of display elements in pixels in all the rows and the operation of sensor elements in pixels in all the rows or in the specific row can be switched.

公开(公告)号：US20230335605A1

公开(公告)日：2023-10-19

申请号：US18129122

申请日：2023-03-31

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koji KUSUNOKI ,  Susumu KAWASHIMA ,  Hideaki SHISHIDO ,  Tomoaki ATSUMI ,  Motoharu SAITO

IPC: H01L29/417 ,  H01L29/786 ,  H01L27/088

CPC classification number: H01L29/41733 ,  H01L29/7869 ,  H01L27/088 ,  H01L29/78696

Abstract: A novel semiconductor device is provided. The semiconductor device is a single-polarity semiconductor device including a vertical-channel transistor. In the vertical-channel transistor, the higher parasitic capacitance value of the gate-source parasitic capacitance and the gate-drain parasitic capacitance is used as a bootstrap capacitor, which decreases the occupied area of the semiconductor device. The use of an oxide semiconductor for a semiconductor layer of the vertical-channel transistor increases the breakdown voltage between the source and the drain, which can shorten the channel length. In addition, stable operation can be performed even in a high-temperature environment.

公开(公告)号：US20230165055A1

公开(公告)日：2023-05-25

申请号：US17921444

申请日：2021-04-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Kensuke YOSHIZUMI

IPC: H10K59/121 ,  H10K59/131 ,  H10K59/35

CPC classification number: H10K59/1213 ,  H10K59/1216 ,  H10K59/131 ,  H10K59/352 ,  H10K59/353

Abstract: A display device that has an image capturing function is provided. An image capturing device or a display device with high definition is provided. The display device includes first to fourth switches, a first transistor, a capacitor, and a light-emitting/receiving element. The first switch is connected to a gate of the first transistor. The second switch is connected to one of a source and a drain of the first transistor. An anode of the light-emitting/receiving element is connected to the other of the source and the drain of the first transistor through the third switch. The fourth switch is connected to the other of the source and the drain of the first transistor. One electrode of the capacitor is connected to the gate of the first transistor, and the other electrode of the capacitor is connected to the other of the source and the drain of the first transistor. The light-emitting/receiving element emits light of a first color, receives light of a second color, and converts the light into an electric signal.

公开(公告)号：US20230154369A1

公开(公告)日：2023-05-18

申请号：US18096117

申请日：2023-01-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei TOYOTAKA ,  Kazunori WATANABE ,  Susumu KAWASHIMA ,  Daisuke KUBOTA ,  Tetsuji ISHITANI ,  Akio YAMASHITA

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G06F3/041

Abstract: A flip-flop circuit is provided. A driver circuit is provided. The flip-flop circuit includes first to fifth input terminals and first to third output terminals, the first input terminal is supplied with a first trigger signal, the second input terminal is supplied with a second trigger signal, the third input terminal is supplied with a batch selection signal, the fourth input terminal is supplied with a first pulse width modulation signal, and the fifth input terminal is supplied with a second pulse width modulation signal. The first output terminal supplies a first selection signal in response to the first pulse width modulation signal in a period from supply of the first trigger signal to supply of the second trigger signal, the first output terminal supplies the first selection signal in a period during which the batch selection signal is supplied, the second output terminal supplies a second selection signal in response to the second pulse width modulation signal in the period from the supply of the first trigger signal to the supply of the second trigger signal, and the third output terminal supplies a third trigger signal.

公开(公告)号：US20220392419A1

公开(公告)日：2022-12-08

申请号：US17887638

申请日：2022-08-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei TOYOTAKA ,  Kei TAKAHASHI ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Susumu KAWASHIMA

IPC: G09G3/36 ,  G06F3/041

Abstract: A novel display panel that is highly convenient or reliable is provided. A pixel circuit includes a first switch, a node, a capacitor, and a second switch. The first switch includes a first terminal to which a first signal is supplied and a second terminal electrically connected to the node. The capacitor includes a first terminal electrically connected to the node and a second terminal electrically connected to the second switch. The second switch includes a first terminal to which a second signal is supplied and a second terminal electrically connected to the second terminal of the capacitor. In addition, the second switch has a function of changing from a non-conducting state to a conducting state when the first switch is in a non-conducting state and a function of changing from a conducting state to a non-conducting state when the first switch is in a non-conducting state. The display element performs display on the basis of a potential of the node.

公开(公告)号：US20220230600A1

公开(公告)日：2022-07-21

申请号：US17713358

申请日：2022-04-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Kouhei TOYOTAKA ,  Naoto KUSUMOTO ,  Shunpei YAMAZAKI

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/1368 ,  H01L27/105 ,  H01L27/12 ,  H01L29/24 ,  H01L29/786

Abstract: A display device capable of performing image processing is provided. A memory node is provided in each pixel included in the display device. An intended correction data is held in the memory node. The correction data is calculated by an external device and written into each pixel. The correction data is added to image data by capacitive coupling, and the resulting data is supplied to a display element. Thus, the display element can display a corrected image. The correction enables image upconversion, for example.