Abstract: To provide a display device capable of displaying a plurality of images by superimposition using a plurality of memory circuits provided in a pixel. A plurality of memory circuits are provided in a pixel, and signals corresponding to images for superimposition are retained in each of the plurality of memory circuits. In the pixel, the signals corresponding to the images for superimposition are added to each of the plurality of memory circuits. The signals are added to the signals retained in the memory circuits by capacitive coupling. A display element can display an image corresponding to a signal in which a signal written to a pixel through a wiring is added to the signals retained in the plurality of memory circuits. Reduction in the amount of arithmetic processing for displaying images by superimposition can be achieved.

Abstract: A display apparatus with a high aperture ratio is provided. The display apparatus includes a light-emitting device, a light-receiving device, a first conductive layer, a second conductive layer, and a first insulating layer. The light-emitting device includes a first pixel electrode, a first layer over the first pixel electrode, and a common electrode over the first layer. The light-receiving device includes a second pixel electrode, a second layer over the second pixel electrode, and the common electrode over the second layer. The first layer includes a light-emitting layer. The second layer includes a photoelectric conversion layer. The first conductive layer is placed over the common electrode. The first insulating layer is placed over the first conductive layer. The second conductive layer is placed over the first insulating layer. One or both of the first conductive layer and the second conductive layer overlap with a region interposed between the first layer and the second layer.

Abstract: A high-resolution display device is provided. A first light-emitting device and a second light-emitting device are provided over an insulating surface. A first sidewall insulating layer is in contact with a side surface of a first pixel electrode included in the first light-emitting device, and a second sidewall insulating layer is in contact with a side surface of a second pixel electrode included in the second light-emitting device. The first light-emitting device overlaps with a first coloring layer with a first color conversion layer therebetween. The first light-emitting device and the second light-emitting device share a common electrode. A first layer included in the first light-emitting device, a second layer included in the second light-emitting device, and a material layer positioned over a top surface of an insulating layer and between the first sidewall insulating layer and the second sidewall insulating layer each contain the same light-emitting material and are separated from each other.

Abstract: A display device in which a voltage drop is inhibited adequately is provided. The display device includes a common electrode included in a first light-emitting device in which a plurality of light-emitting layers are stacked and a second light-emitting device in which a plurality of light-emitting layers are stacked and an auxiliary wiring electrically connected to the common electrode. The auxiliary wiring includes a first wiring layer and a second wiring layer, the second wiring layer is electrically connected to the first wiring layer through a contact hole of an insulating layer, and the first wiring laver has a lattice shape in a top view.

Abstract: A display device having a high display quality is provided. A display device that can perform desired display without image data conversion is provided. The display device includes a first pixel. The first pixel includes a first light-emitting element, a color conversion layer, and a first memory circuit. The first light-emitting element exhibits blue light. The color conversion layer has a function of converting light emitted by the first light-emitting element into light having a longer wavelength. A first image signal and a first correction signal are supplied to the first pixel. The first memory circuit has a function of retaining the first correction signal and a function of adding the first correction signal to the first image signal. The first pixel has a function of displaying an image using the first image signal and the first correction signal.

Abstract: A display apparatus with high display quality is provided. The display apparatus includes a first light-emitting device, a second light-emitting device, a first insulating layer, and a filling layer. The first light-emitting device includes a first electrode, a first semiconductor layer over the first electrode, and a common electrode over the first semiconductor layer. The second light-emitting device includes a second electrode, a second semiconductor layer over the second electrode, and the common electrode over the second semiconductor layer. The first insulating layer includes a region in contact with the side surface of the first semiconductor layer and a region in contact with the side surface of the second semiconductor layer. The filling layer includes a region overlapping with the side surface of the first semiconductor layer with the first insulating layer therebetween and a region overlapping with the side surface of the second semiconductor layer with the first insulating layer therebetween.

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 display device having both a touch detection function and a function of capturing an image of a shape of a fingerprint or a vein is provided. The display device includes a first substrate, a first light-emitting element, a second light-emitting element, a light-receiving element, a light-blocking layer, a first resin layer, and a second resin layer. The first light-emitting element and the light-receiving element are arranged over the first substrate, and the first resin layer is provided over the first light-emitting element and the light-receiving element. The light-blocking layer is provided over the first resin layer, and the second light-emitting element is provided over the light-blocking layer. The second resin layer is provided over the second light-emitting layer. The first light-emitting element emits visible light upward, and the second light-emitting element emits invisible light upward.

Abstract: 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.

Abstract: A display apparatus with a high aperture ratio is provided. The display apparatus includes first and second light-emitting devices, a first conductive layer, a second conductive layer, and a first insulating layer. The first light-emitting device includes a first pixel electrode, a first EL layer, and a common electrode over the first EL layer. The second light-emitting device includes a second pixel electrode, a second EL layer, and the common electrode over the second EL layer. The first conductive layer is provided over the common electrode. The first insulating layer is provided over the first conductive layer. The second conductive layer is provided over the first insulating layer. Any one or both of the first and second conductive layers overlap with a region interposed between the first EL layer and the second EL layer. One side surface of the first EL layer and one side surface of the second EL layer are provided to face each other.

Abstract: Provided is a highly reliable semiconductor device. The present invention relates to a shift register circuit including a plurality of stages of sequential circuits. An output signal of a sequential circuit is input to a sequential circuit in the subsequent stage. Before a sequential circuit outputs a signal and after the sequential circuit outputs the signal, the potential of a gate of a transistor included in the sequential circuit is changed in accordance with a clock signal so as to avoid voltage stress application between the gate and a source of the transistor for a long time. The shift register circuit can be applied to a scan line driver circuit of a display apparatus, for example.

Abstract: To provide a display device capable of performing image processing. Each pixel is provided with a memory circuit in which desired correction data is retained. The correction data is generated by calculation in an external device and written to each pixel. The correction data is added to image data by capacitive coupling and supplied to a display element. Thus, the display element can display a corrected image. Through the correction, image upconversion can be performed, or image quality decreased because of variations in pixel transistor characteristics can be corrected.

Abstract: A semiconductor device having a light sensing function and including a high-resolution display portion is provided. The semiconductor device includes a plurality of pixels, and the pixels each include first and second light-receiving devices, first to fifth transistors, a capacitor, and a first wiring. One electrode of the first light-receiving device is electrically connected to the first wiring, and the other electrode is electrically connected to one of a source and a drain of the first transistor. One electrode of the second light-receiving device is electrically connected to the first wiring, and the other electrode is electrically connected to one of a source and a drain of the second transistor. The other of the source and the drain of the second transistor is electrically connected to the other of the source and the drain of the first transistor.

Abstract: 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.

Abstract: A light-blocking device that includes a display device is provided. A method for unfolding a light-blocking device that includes a display device is provided. The light-blocking device is used for a vehicle. The light-blocking device includes a light-blocking portion, a storage portion, and a driving means. The light-blocking portion includes a display portion on a surface on the inside of the vehicle. The storage portion is positioned in a roof portion of the vehicle. The driving means has a first function of unfolding the light-blocking portion in a first position, a second function of unfolding the light-blocking portion in a second position, and a third function of storing the light-blocking portion in a third position inside the storage portion. The first position is a position where the light-blocking portion does not obstruct driver's forward vision. The second position is a position where the light-blocking portion covers 80% or higher of the area of a windshield of the vehicle.

Abstract: An electronic device having an authentication method with high security is provided. The electronic device includes a pixel portion, a sensor portion, and an authentication portion. The pixel portion includes a display element and a light-receiving element. The pixel portion includes a first region and has a function of making the display element of the first region emit light. The pixel portion has a function of obtaining first authentication information by capturing an image of an object that is in contact with the first region with the use of the light-receiving element. The sensor portion includes a second region and has a function of obtaining second authentication information by capturing an image of an object that is in contact with the second region. The authentication portion has a function of performing first authentication processing using the first authentication information.

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 apparatus with high display quality is provided. A highly reliable display apparatus is provided. A display apparatus that can easily achieve a higher resolution is provided. The display apparatus includes a first light-emitting device in which a first pixel electrode, a first layer including a first light-emitting layer, and a common electrode are stacked in order, a second light-emitting device in which a second pixel electrode, a second layer including a second light-emitting layer, and the common electrode are stacked in order, and a third light-emitting device in which a third pixel electrode, a third layer including a third light-emitting layer, and the common electrode are stacked in order. The second layer includes a first region overlapping with the first layer and a second region overlapping with the third layer. The first region is positioned over the first layer. The second region is positioned under the third layer.

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 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.