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.

Abstract: A thin touch panel is provided. A touch panel with a simple structure is provided. The number of components of a touch panel is reduced. Each of a pair of wirings of a touch sensor is positioned closer to a substrate supporting light-emitting elements than a common electrode is, and includes a portion positioned between two adjacent pixel electrodes in a plan view. Furthermore, an island-like structure body with an inverse tapered shape is provided over each of the pair of wirings. A conductive layer in an electrically floating state is provided over the structure body. Each conductive layer has a portion overlapping with one of the pair of wirings. Moreover, the conductive layer and the common electrode are formed using the same conductive film.

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.

Abstract: An illumination device includes a laser element, a rotating member including a plurality of flat mirror regions that are disposed along a circumference direction of the rotating member to sequentially reflect laser beams emitted from the first laser element with rotation of the rotating member, and a wavelength conversion member. Each of the laser beams reflected at a corresponding one of the mirror regions is incident on the wavelength conversion member. When viewed in a direction in which a rotation axis of the rotating member extends, the mirror regions are disposed at mutually different angles with respect to respective ones of lines each connecting the rotation axis and the center of a respective one of the mirror regions.

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.

Abstract: 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.

Abstract: A liquid crystal display device including a pixel containing a first memory circuit, a second memory circuit, and a liquid crystal element is provided. The first memory circuit includes a first capacitor. One electrode of the first capacitor is electrically connected to one electrode of the liquid crystal element. The second memory circuit includes a second capacitor. One electrode of the second capacitor is electrically connected to the one electrode of the liquid crystal element. The first memory circuit has a function of storing a charge corresponding to a first signal. The second memory circuit has a function of storing a charge corresponding to a second signal. A voltage is applied to the liquid crystal element by supplying a third signal to the other electrode of the first capacitor and supplying a fourth signal to the other electrode of the second capacitor, whereby an image is displayed.

Abstract: A storage includes a first area in which an own device program is stored and a second area in which an other device program is stored at factory shipment. A data processor executes data processing with the other device based on the own device program. A version getter gets the version of the other device program stored in the other device. When the version of the other device program got from the other device satisfies a predetermined condition, a program transmitter transmits the other device program stored in the second area to the other device to cause the other device to update the other device program stored in the other device. A program updater temporarily stores an own device update program input from outside in the second area in place of the other device program and updates the own device program stored in the first area.

Abstract: A novel display panel that is highly convenient or reliable is provided. The display panel includes a pixel comprising a pixel circuit and a display element, and the display element is electrically connected to the pixel circuit. The pixel circuit is supplied with a selection signal, an image signal, and a pulse width control signal, supplies an output potential, and determines, on the basis of the pulse width control signal, a period during which the output potential is supplied. The pixel circuit includes a first switch and a first transistor. The first switch supplies the image signal on the basis of the selection signal and determines the output potential on the basis of the image signal. The first transistor includes a first and second electrode, and a first gate electrode. The output potential is output from the first electrode, and the first gate electrode is supplied with the image signal.

Abstract: 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.

Abstract: A communication terminal is connected to a server and provides movement guidance for a mobile unit based on guidance information delivered from the server. The terminal requests the server for update information for updating area identification information that identifies a section corresponding to an update target area and a section not corresponding to the update target area on a section-by-section basis. The update target area is an area whose terminal-side map information included in the communication terminal is an older version. The terminal updates the area identification information based on the update information transmitted from the server, requests the server for guidance information for providing movement guidance for the mobile unit based on the updated area identification information, and provides the movement guidance for the mobile unit based on the guidance information delivered from the server.

Abstract: An object is to provide a memory device including a memory element that can be operated without problems by a thin film transistor with a low off-state current. Provided is a memory device in which a memory element including at least one thin film transistor that includes an oxide semiconductor layer is arranged as a matrix. The thin film transistor including an oxide semiconductor layer has a high field effect mobility and low off-state current, and thus can be operated favorably without problems. In addition, the power consumption can be reduced. Such a memory device is particularly effective in the case where the thin film transistor including an oxide semiconductor layer is provided in a pixel of a display device because the memory device and the pixel can be formed over one substrate.

Abstract: A novel display panel that is highly convenient or reliable is provided. A novel display device is provided. The display panel includes a display region, a first terminal region, and a second terminal region, and the first terminal region is provided not to block the display region and includes a region overlapping with the display region. The first terminal region includes a first group of terminals, and the first group of terminals includes a first terminal. The second terminal region includes a second group of terminals, and the second group of terminals includes a second terminal. The display region includes one group of pixels, another group of pixels, a scan line, and a signal line. The one group of pixels includes a pixel and is arranged in a row direction. The another group of pixels includes the pixel and is arranged in a column direction intersecting the row direction. The scan line is electrically connected to the one group of pixels.

Abstract: An illumination device includes a laser element, a rotating member including a plurality of flat mirror regions that are disposed along a circumference direction of the rotating member to sequentially reflect laser beams emitted from the first laser element with rotation of the rotating member, and a wavelength conversion member. Each of the laser beams reflected at a corresponding one of the mirror regions is incident on the wavelength conversion member. When viewed in a direction in which a rotation axis of the rotating member extends, the mirror regions are disposed at mutually different angles with respect to respective ones of lines each connecting the rotation axis and the center of a respective one of the mirror regions.

Abstract: There is provided a technique for reducing the possibility that a user loses track of how a road, etc., grasped by him/her have been changed on a map. A navigation system includes: a map display part that displays a map on a display in any of a plurality of display modes, the map including a current location; a moving image display part that displays, when the display mode changes, a moving image in which the map is rotated and the display mode before being changed gradually changes to a changed display mode, on the display; and a speed-of-change control part that increases a speed of change in the display mode after start of the change in the display mode.

Abstract: A display apparatus that operates at high speed is provided. The display apparatus includes a display portion provided with a pixel, and the display portion has a function of displaying a first-color image and a second-color image. A first period in which first image data and first data are written to the pixel, a second period in which the first-color image corresponding to the first image data is displayed on the display portion, a third period in which second image data is generated in the pixel on the basis of the first image data and the first data, and a fourth period in which the second-color image corresponding to the second image data is displayed on the display portion are included.

Abstract: A display device featuring a touch detection and a fingerprint imaging functions is provided. A display device includes a light-emitting element and a light-receiving element. The light-emitting element includes a first pixel electrode, a light-emitting layer, and a common electrode, and the light-receiving element includes a second pixel electrode, an active layer, and the common electrode. The first pixel electrode and the second pixel electrode are provided on the same plane. The common electrode overlaps with the first pixel electrode with the light-emitting layer therebetween, and overlaps with the second pixel electrode with the active layer therebetween. A first conductive layer, a second conductive layer, and an insulating layer are provided above the common electrode. The insulating layer is provided above the first conductive layer, and the second conductive layer is provided above the insulating layer.

Abstract: A novel image processing method is provided. In a display device in which a video signal is individually supplied to a screen divided into two, the entire screen is subjected to up-conversion processing after being divided, and another up-conversion processing is performed for a boundary portion of the screen divided into two. The divided up-conversion processing for the entire screen and the up-conversion processing for the boundary portion are performed in parallel with the use of a plurality of arithmetic units. The divided up-conversion processing for the entire screen and the up-conversion processing for the boundary portion can be performed using different algorithms.

Abstract: 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.

Abstract: To provide a display device having a small circuit area and low power consumption. The display device includes a semiconductor device and a D/A converter circuit, and the semiconductor device includes first to third transistors and first and second capacitors. A first terminal of the first transistor is electrically connected to a first terminal of the first capacitor. A first terminal of the second transistor is electrically connected to a gate of the third transistor, a second terminal of the first capacitor, and a first terminal of the second capacitor. A first terminal of the third transistor is electrically connected to a second terminal of the second capacitor. An output terminal of the D/A converter circuit is electrically connected to a second terminal of the first transistor and a second terminal of the second transistor.