Semiconductor Energy Laboratory Co., Ltd.

Susumu Kawashima

Koji Kusunoki

Kazunori Watanabe

Kei Takahashi

Naoto Kusumoto

Kouhei Toyotaka

Shunpei Yamazaki

Daisuke Kubota

Satoshi Yoshimoto

Tetsuji Ishitani

Ryo Hatsumi

Taisuke Kamada

Akio Yamashita

Motoharu Saito

Kensuke Yoshizumi

Tomoaki Atsumi

Hidetomo Kobayashi

Masataka Nakada

Kentaro Hayashi

Hiroyuki Miyake

Hidekazu Miyairi

Junya Maruyama

Shingo Eguchi

Tomoya Aoyama

Daiki Nakamura

Nozomu Sugisawa

Masataka Sato

Kazuhiko Fujita

Manabu Sato

Shigeru Onoya

Hidenori Mori

Hironori Matsumoto

Ami Sato

Marina Hiyama

Masami Jintyou

Takanori Matsuzaki

Hideaki Shishido

Tatsuya Onuki

Munehiro Kozuma

Yuki Okamoto

Yutaka Okazaki

Daisuke Kurosaki

Toshiyuki Isa

Takahiro Fukutome

Katsuki Yanagawa

Jiro Imada

Ryo Yamauchi

Masataka Shiokawa

A display apparatus with low-power consumption is provided. The display apparatus includes an inverter circuit and a pixel having a function of adding data, and the inverter circuit has a function of inverting data supplied from a source driver. The inverter circuit has a function of inverting data supplied from a source driver. The pixel has a function of adding data supplied from the source driver and the inverter circuit. Accordingly, the pixel can generate a voltage several times higher than the output voltage of the source driver and can supply the voltage to a display device. With such a structure, the output voltage of the source driver can be lowered, so that a display apparatus with low power consumption can be achieved.

Display apparatus and electronic device

A method for driving a novel display apparatus is provided. The method is a method for driving a display apparatus including a first layer and a second layer over the first layer. The first layer includes a plurality of driver circuit regions. The second layer includes a plurality of display regions. Each of the plurality of driver circuit regions includes a driver circuit. Each of the plurality of display regions includes a plurality of pixels. Each of the plurality of pixels includes a light-emitting element. The driver circuit included in one of the plurality of driver circuit regions has a function of driving each of the plurality of pixels included in one of the plurality of display regions. The method for driving the display apparatus includes: performing a first operation in which an operation of sequentially writing an image signal row by row in each of the plurality of display regions is performed and the operation is performed in all the plurality of display regions at the same time; performing a second operation in which the light-emitting elements included in the plurality of pixels are brought into a light-emitting state simultaneously after the first operation; and performing a third operation in which the light-emitting elements included in the plurality of pixels are brought into a non-light-emitting state simultaneously after the second operation.

Display apparatus and method for driving the display apparatus

A highly functional semiconductor device is provided. The semiconductor device includes a first transistor and a second transistor. The first transistor includes a first semiconductor layer, a first gate electrode, a first electrode, and a second electrode. The second transistor includes a second semiconductor layer, a second gate electrode, a third electrode, and a fourth electrode. The first gate electrode and the second gate electrode are connected to each other, and the second electrode and the third electrode are connected to each other. A first insulating layer, a second insulating layer, and a second semiconductor layer are stacked over the first semiconductor layer. The first insulating layer is less likely to diffuse hydrogen than the second insulating layer. The second insulating layer contains oxide, the first semiconductor layer contains polycrystalline silicon, and the second semiconductor layer contains a metal oxide. The first transistor is a p-channel transistor and the second transistor is an n-channel transistor.

Semiconductor device, display device, and electronic device

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.

Semiconductor device having circuit comprising display element

A semiconductor device with high reliability is provided. The semiconductor device includes a first transistor, a second transistor, a capacitor, and first to fourth wirings. The first transistor includes a first gate and a second gate, and one of a source and a drain of the first transistor is connected to the first wiring and the second gate, and the other of the source and the drain is connected to one of a source and a drain of the second transistor and one electrode of the capacitor. A gate of the second transistor is connected to the other electrode of the capacitor, and the other of the source and the drain of the second transistor is electrically connected to the second wiring. The first wiring is supplied with a first potential, and the second wiring is supplied with a second potential and a third potential alternately. The third wiring is connected to the first gate and supplied with a first signal. The fourth wiring is connected to the gate of the second transistor and supplied with a second signal obtained by inverting the first signal.

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.

Display device and electronic device

A novel functional panel that is highly convenient, useful, or reliable is provided. The functional panel includes a first pixel and a second pixel, the first pixel comprises a first pixel circuit and a light-emitting element, the second pixel comprises a second pixel circuit and a photodiode. The first pixel circuit is configured to hold a first state on the basis of a control signal comprising a first level, a second state on the basis of a control signal comprising a second level, and a third state on the basis of an image signal. The light-emitting element does not perform light emission in the first state, is configured to perform light emission in the second state, and is configured to perform light emission on the basis of the image signal in the third state.

Functional panel, display device, input/output device, and data processing device

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.

Display apparatus, its operating method, and electronic device

A highly reliable semiconductor device is provided. The semiconductor device includes first to third transistors and a capacitor. In the first transistor, one of a source and a drain is supplied with a first signal, the other of the source and the drain is connected to a gate of the second transistor and one electrode of the capacitor, and a gate is supplied with a second pulse signal. In the second transistor, one of a source and a drain is supplied with a first pulse signal, and the other of the source and the drain is connected to the other electrode of the capacitor and one of a source and a drain of the third transistor. In the third transistor, the other of the source and the drain is supplied with the first potential, and a gate is supplied with a second signal that is an inverted signal of the first signal. The first pulse signal is a clock signal, and the second pulse signal has a duty ratio of 55% or lower.

A display device with an imaging function is provided. A high-resolution imaging device or display device is provided. The display device includes first to third switches, first and second transistors, a capacitor, first and second wirings, and a light-emitting and light-receiving element. One electrode of the first switch is electrically connected to the first wiring, and the other electrode is electrically connected to a gate of the first transistor and one electrode of the capacitor. One electrode of the second switch is electrically connected to one of a source and a drain of the first transistor, one electrode of the light-emitting and light-receiving element, and the other electrode of the capacitor, and the other electrode of the second switch is electrically connected to a gate of the second transistor and one electrode of the third switch. The other electrode of the third switch is electrically connected to the second wiring. The light-emitting and light-receiving element has a function of emitting light of a first color and a function of receiving light of a second color.

Display device, display module, and electronic device

A semiconductor device capable of performing authentication in a short time can be provided. The semiconductor device includes a light-emitting unit and an imaging unit. The imaging unit includes a row driver circuit, and the row driver circuit includes first to m latch circuits (m is an integer greater than or equal to 2) and first to m register circuits. A first start pulse signal is input to a first latch circuit and second start pulse signals are input to first to m latch circuits. Scan signals output from the first to (m−1)-th register circuits are input to the second to m-th latch circuits, respectively. The first latch circuit has a function of outputting one of the first start pulse signal and the second start pulse signal to the first register circuit on the basis of data held, and the second to m-th latch circuits have a function of outputting one of the scan signal and the second start pulse signal to the second to m-th register circuits on the basis of data held.

Semiconductor device, method for driving semiconductor device, and electronic device

A display apparatus includes a data generation circuit, a source driver circuit, and a pixel. The source driver circuit is electrically connected to the pixel through first and second wirings. The pixel includes a display device that is a liquid crystal device, a potential of one electrode of the display device can be a potential of the first wiring, and a potential of the other electrode of the display device can be a potential of the second wiring. The image data generation circuit has a function of generating digital image data including first and second data. One of the first and second wirings is made to have a potential corresponding to first data, and the other of the first and second wirings is made to have a potential corresponding to the second data. The potential of the first wiring and the potential of the second wiring are interchanged.

Display apparatus

A display apparatus including a pixel circuit that generates a PWM signal is provided. In the display apparatus, a pixel has a function of generating a PWM signal. The PWM signal can be generated by an operation of comparing gate-source voltage or on-state resistance of each of two transistors provided in the pixel. Light emission of a light-emitting device such as a micro LED or an organic EL element is controlled with a duty ratio using the generated PWM signal. The PWM signal is generated in a circuit formed of a small number of transistors, which is effective in increasing the definition and the area of the display apparatus.

A novel display is provided. A display having a small change in chromaticity of a micro light-emitting diode in proportion to current density is provided. A display capable of reducing power consumption in the driver circuit when displaying a still image is provided. The display includes a plurality of pixels each including a display element and a microcontroller. The microcontroller includes a first transistor, a triangular wave generator circuit, a comparator, a switch, and a constant current circuit. The first transistor has a function of retaining a potential corresponding to data written to the pixel by being switched off. The triangular wave generator circuit has a function of generating a triangular wave signal. The comparator has a function of generating an output signal corresponding to the potential and the triangular wave signal. The switch has a function of controlling whether or not to make a current flowing in the constant current circuit flow to the display element in accordance with the output signal.

Display and electronic device including the display

A novel correction method of a display apparatus is provided. One embodiment of the present invention is a correction method of a display apparatus. The correction method includes processing in which a voltage correcting a threshold voltage of the transistor is obtained and the voltage is held in the capacitor; processing in which current flowing through the pixel is measured and a second signal based on the current is generated in the first circuit; processing in which the first signal correcting image data using the second signal is generated in the second circuit; and processing in which the first signal is supplied to the pixel.

Correction method of display apparatus including pixel and plurality of circuits

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Kanagawa, Japan

Susumu Kawashima