公开(公告)号：US20210210517A1

公开(公告)日：2021-07-08

申请号：US16760521

申请日：2018-11-15

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu KAWASHIMA ,  Naoto KUSUMOTO

IPC: H01L27/12 ,  H01L29/24 ,  H01L29/786 ,  H01L27/32 ,  G02F1/1368 ,  G02F1/1362

Abstract: A display device capable of improving image quality is provided. A storage node is provided in each pixel and first data can be held in the storage node. Second data is added to the first data by capacitive coupling, which can be supplied to a display element. Thus, the display device can display a corrected image. A reference potential for the capacitive coupling operation is supplied from a power supply line or the like, and thus the first data and the second data can be supplied from a common signal line.

公开(公告)号：US20210183294A1

公开(公告)日：2021-06-17

申请号：US17269736

申请日：2019-09-09

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: G09G3/20

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：US20210181561A1

公开(公告)日：2021-06-17

申请号：US17047149

申请日：2019-04-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu KAWASHIMA ,  Naoto KUSUMOTO

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

Abstract: A display device capable of improving image quality is provided. A display device includes a plurality of pixel blocks in a display region. The pixel blocks each include a first circuit and a plurality of second circuits. The first circuit has a function of adding a plurality of pieces of data supplied from a source driver. The second circuit includes a display element and has a function of performing display in accordance with the added data. One pixel has a configuration including one second circuit and an component of the first circuit that is shared. When the first circuit is shared by a plurality of pixels, the aperture ratio can be increased.

公开(公告)号：US20200279525A1

公开(公告)日：2020-09-03

申请号：US16758108

申请日：2018-11-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Kouhei TOYOTAKA ,  Kei TAKAHASHI ,  Kentaro HAYASHI ,  Shunpei YAMAZAKI

IPC: G09G3/3225 ,  H01L27/32 ,  H01L29/786

Abstract: A display device that can display a high-luminance image is provided. The display device includes a display element and a memory circuit which is electrically connected to a first wiring and a second wiring. First, a reference potential is supplied to the first wiring. Next, a first image signal is supplied to the memory circuit through the second wiring. Then, the second image signal is added to the first image signal by supplying the second image signal to the memory circuit through the first wiring. After that, an image obtained by superimposing an image corresponding to the first image signal and an image corresponding to the second image signal on each other is displayed with the display element.

公开(公告)号：US20180226041A1

公开(公告)日：2018-08-09

申请号：US15888630

申请日：2018-02-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu KAWASHIMA ,  Hidetomo KOBAYASHI

IPC: G09G3/36

CPC classification number: G09G3/3677 ,  G09G2310/0213 ,  G09G2310/04 ,  G09G2320/0219 ,  G09G2320/0295

Abstract: Display quality is improved. A display device includes a display controller and a display panel provided with m×n pixels. The display controller includes the step of comparing first display data, which is displayed in a first pixel connected to the i-th signal line and the (j−1)-th scan line, with second display data, which is displayed in a second pixel connected to the i-th signal line and the j-th scan line, and calculating an absolute value of a difference value, the step of extracting a maximum value from a result of the absolute value, and the step of determining a first selection period of the j-th scan line in accordance with the maximum value.

公开(公告)号：US20250157404A1

公开(公告)日：2025-05-15

申请号：US19021338

申请日：2025-01-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: G09G3/3233 ,  H10D84/83 ,  H10D86/40 ,  H10D86/60

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：US20250081612A1

公开(公告)日：2025-03-06

申请号：US18603286

申请日：2024-03-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu KAWASHIMA ,  Naoto KUSUMOTO

IPC: H01L27/12 ,  G02F1/1362

Abstract: A display device capable of performing proper display without image signal conversion is provided. In the case of high-resolution display, individual data is supplied to each pixel through a first signal line and a first transistor included in each pixel. In the case of low-resolution display, the same data is supplied to a plurality of pixels through a second signal line and a second transistor electrically connected to the plurality of pixels. When the number of image signals to be displayed is more than one and the image signals support different resolutions, display can be performed without up conversion or down conversion by switching an image signal supply path as described above.

公开(公告)号：US20240321231A1

公开(公告)日：2024-09-26

申请号：US18734810

申请日：2024-06-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu KAWASHIMA ,  Kouhei Toyotaka ,  Kei Takahashi

IPC: G09G3/36 ,  G02F1/1333 ,  G02F1/1368 ,  G06F3/041 ,  G06F3/044

CPC classification number: G09G3/3677 ,  G06F3/0418 ,  G06F3/0443 ,  G02F1/13338 ,  G02F1/1368 ,  G06F3/044 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/103

Abstract: A display device that achieves both high-accuracy sensing by a touch sensor unit and smooth input using the touch sensor unit is provided. The display device includes a display unit and the touch sensor unit. The touch sensor unit performs touch sensing operation at a different timing from display image rewriting by the display unit, whereby the high-accuracy sensing can be achieved. The display unit has a function of rewriting a display image only in a region that needs to be rewritten. In the case where the entire display region is not necessarily rewritten, the time for the sensing operation by the touch sensor unit can be lengthened, whereby the smooth input can be achieved.

公开(公告)号：US20240162233A1

公开(公告)日：2024-05-16

申请号：US18411105

申请日：2024-01-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu KAWASHIMA ,  Naoto KUSUMOTO

IPC: H01L27/12 ,  G02F1/1362 ,  G02F1/1368 ,  H01L29/24 ,  H01L29/786 ,  H10K59/121 ,  H10K59/131 ,  H10K59/40

CPC classification number: H01L27/1225 ,  G02F1/136286 ,  G02F1/1368 ,  H01L27/124 ,  H01L27/1255 ,  H01L29/24 ,  H01L29/78648 ,  H01L29/7869 ,  H10K59/1213 ,  H10K59/1216 ,  H10K59/131 ,  H10K59/40 ,  G09G3/3233

Abstract: A display device capable of improving image quality is provided. A storage node is provided in each pixel and first data can be held in the storage node. Second data is added to the first data by capacitive coupling, which can be supplied to a display element. Thus, the display device can display a corrected image. A reference potential for the capacitive coupling operation is supplied from a power supply line or the like, and thus the first data and the second data can be supplied from a common signal line.

公开(公告)号：US20230400740A1

公开(公告)日：2023-12-14

申请号：US18233953

申请日：2023-08-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Koji KUSUNOKI ,  Susumu KAWASHIMA ,  Daisuke KUBOTA ,  Tetsuji ISHITANI ,  Akio YAMASHITA

IPC: G02F1/1362 ,  G02F1/1333 ,  G02F1/137 ,  C09K19/38 ,  G02F1/1343 ,  G02F1/1368

CPC classification number: G02F1/13624 ,  G02F1/133357 ,  G02F1/13756 ,  C09K19/3857 ,  G02F1/133345 ,  G02F1/133365 ,  G02F1/13439 ,  G02F1/136227 ,  G02F1/1368

Abstract: A display device with a high aperture ratio is provided. The display device includes, in a pixel, a first transistor, a second transistor, a first insulating layer, a second insulating layer, a conductive layer, a pixel electrode, a layer containing a liquid crystal material, and a common electrode. The first insulating layer is positioned over a channel formation region of the first transistor. The conductive layer is positioned over the first insulating layer. The second insulating layer is positioned over the first transistor, the second transistor, the first insulating layer, and the conductive layer. The pixel electrode is positioned over the second insulating layer, the layer containing a liquid crystal material is positioned over the pixel electrode, and the common electrode is positioned over the layer containing a liquid crystal material. The common electrode overlaps with the conductive layer with the layer containing a liquid crystal material and the pixel electrode therebetween. The pixel includes a first connection portion where the conductive layer is electrically connected to the first transistor and a second connection portion where the pixel electrode is electrically connected to the second transistor. The conductive layer, the pixel electrode, and the common electrode each have a function of transmitting visible light.