Abstract: A novel photoelectric conversion device that is highly convenient, useful, or reliable is provided. The photoelectric conversion device includes a first electrode (551S), a second electrode (552S), and a first unit (103S). The first unit (103S) is interposed between the first electrode (551S) and the second electrode (552S). The first unit (103S) includes a first layer (112) and a second layer (114S). The first layer (112) is interposed between the second layer (114S) and the first electrode (551S). The first layer (112) includes a first organic compound HTM, and the first organic compound HTM has a hole-transport property. The second layer (114S) includes a second organic compound CTM, the second organic compound CTM emits delayed fluorescent light at room temperature, and the second organic compound has an aromatic amine skeleton.

Abstract: A display apparatus having both a personal authentication function and a high resolution is provided. The display apparatus includes a display portion and a sensor portion. The display portion includes a first light-emitting element and a second light-emitting element. The first light-emitting element includes a first EL layer. The second light-emitting element includes a second EL layer. The sensor portion includes a light-receiving element. The first light-emitting element has a function of emitting infrared light. The light-receiving element has a function of detecting infrared light. A distance between the first EL layer and the second EL layer is less than or equal to 6 ?m.

Abstract: To provide a thin touch panel, a touch panel having a simple structure, a touch panel which can be easily incorporated into an electronic device, or a touch panel with a small number of components. The touch panel includes pixel electrodes arranged in a matrix, a plurality of signal lines, a plurality of scan lines, a plurality of first wirings extending in a direction parallel to the signal lines, and a plurality of second wirings extending in a direction parallel to the scan line. Part of the first wiring and part of the second wiring function as a pair of electrodes included in a touch sensor. The first wiring and the second wiring each have a stripe shape or form a mesh shape and are each provided between two adjacent pixel electrodes in a plan view.

Abstract: A display device having a photosensing function is provided. A display device having a biometric authentication function typified by fingerprint authentication is provided. A display device having a touch panel function and a biometric authentication function is provided. The display device includes a first substrate, a light guide plate, a first light-emitting element, a second light-emitting element, and alight-receiving element. The first substrate and the light guide plate are provided to face each other. The first light-emitting element and the light-receiving element are provided between the first substrate and the light guide plate. The first light-emitting element has a function of emitting first light through the light guide plate. The second light-emitting element has a function of emitting second light to a side surface of the light guide plate.

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 display device capable of image capturing with high sensitivity is provided. A light-emitting element emitting visible light, an infrared light-emitting element emitting infrared light, and a light-receiving element that has sensitivity to infrared light are provided in a display region. After the light-emitting element emits light to display an image on the display region, black display is performed. In the period in which black display is performed, the infrared light-emitting element emits light and light exposure is performed on the light-receiving element. The light-receiving element detects infrared light emitted from the infrared light-emitting element and reflected by an object that is in contact with or approaches the display region. The display device functions as a touch sensor or a noncontact sensor.

Abstract: A highly convenient display system is provided. A display system that enables a screen to be operated easily with a laser pointer is provided. A display system that enables a screen to be operated by a large number of people is provided. The display system includes a light-emitting apparatus and a display device. The light-emitting apparatus includes a means for emitting visible laser light and a means for emitting invisible light. The display device includes a display unit including a means for displaying an image and a means for obtaining positional information on a portion irradiated with the visible light, and a means for receiving the invisible light. The display system has a function of performing processing in accordance with the positional information when the invisible light is received.

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: A novel photoelectric conversion device that is highly convenient, useful, or reliable is provided. A photoelectric conversion device (550S) includes a first electrode (551S), a second electrode (552S), and a unit (103S); the unit (103S) is interposed between the first electrode (551S) and the second electrode (552S); the unit (103S) includes a first layer (113) and a second layer (114S); and the first layer (113) is interposed between the second electrode (552S) and the second layer (114S). The first layer (113) contains a first organic compound ETM, the first organic compound ETM has an electron-transport property, and the first organic compound ETM has a LUMO level in a first level LUMO1. The second layer (114S) contains a second organic compound CTM, the second organic compound CTM emits delayed fluorescent light at room temperature, and the second organic compound CTM has a LUMO level in a second level LUMO2.

Abstract: A display apparatus having a noncontact input function is provided. The display apparatus has a first function of detecting, with a light-receiving device, light irradiated from a light source outside a display portion and blocked by a pointing object to recognize the position pointed by the pointing object, and a second function of detecting, with the light-receiving device, light irradiated from a light source inside or outside the display portion and reflected by the pointing object to recognize the position pointed by the pointing object. The display apparatus can operate by switching the first function and the second function in accordance with the intensity of the light irradiated from the light source outside the display portion.

Abstract: A display apparatus through which a user can see the background and which is capable of performing image capturing with high sensitivity is provided. The display apparatus includes a first light-emitting element, a second light-emitting element adjacent to the first light-emitting element, a light-receiving element adjacent to the second light-emitting element, a first organic layer provided between the second light-emitting element and the light-receiving element, and a second organic layer provided between the first light-emitting element and the second light-emitting element over a substrate with a visible-light-transmitting property. The first light-emitting element has a structure in which a first pixel electrode, a first light-emitting layer, and a common electrode are stacked in this order. The second light-emitting element has a structure in which a second pixel electrode, a second light-emitting layer, and the common electrode are stacked in this order.

Abstract: A display apparatus with a high aperture ratio can be provided. A display apparatus with a personal authentication function can be provided. A display apparatus having high display quality can be provided. A highly reliable display apparatus can be provided. A display apparatus that can have a higher resolution can be provided. A display apparatus with low power consumption can be provided. An imaging device includes a pixel electrode, a first layer over the pixel electrode, an insulating layer covering part of the top surface of the first layer, and a common electrode covering the first layer and the insulating layer, and the first layer includes a photoelectric conversion layer.

Abstract: A display apparatus having an image capturing function is provided. A display apparatus or an imaging device with a high aperture ratio is provided. The display apparatus includes a first light-emitting element and a light-receiving element. The first light-emitting element is formed by stacking a first pixel electrode, a first organic layer, and a common electrode in this order. The light-receiving element is formed by stacking a second pixel electrode, a second organic layer, and the common electrode in this order. The first organic layer includes a first light-emitting layer, and the second organic layer includes a photoelectric conversion layer. A first layer and a second layer are included in a region between the first light-emitting element and the light-receiving element. The first layer overlaps with the second organic layer and contains the same material as the first organic layer. The second layer overlaps with the first organic layer and contains the same material as the second organic layer.

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 method of manufacturing a high-resolution display apparatus having a light sensing function is provided.

Abstract: A high-resolution display apparatus having a function of sensing light is provided. A high-definition display apparatus having a function of sensing light is provided. The display apparatus includes a first light-emitting device, a second light-emitting device, a third light-emitting device, a first light-receiving device, and a second light-receiving device in a first pixel. The first light-emitting device has a function of emitting red light. The second light-emitting device has a function of emitting green light. The third light-emitting device has a function of emitting blue light. The first light-receiving device has a function of sensing light emitted from at least one of the three light-emitting devices. The second light-receiving device has a function of sensing infrared light.

Abstract: A high-resolution display device with reduced display unevenness is provided. In the display device, a plurality of pixels are included over a substrate; each of the plurality of pixels includes a transistor and a light-emitting element; the light-emitting element includes a first electrode, an EL layer over the first electrode, and a second electrode over the EL layer; the first electrode is electrically connected to the transistor; in the plurality of pixels, the first electrodes in adjacent pixels are separated by an insulating layer; the second electrode includes a conductive material having light-transmitting property with respect to visible light; the second electrode of each of the plurality of pixels is shared; and light is emitted from the second electrode side. A wiring is included; in a plane view with respect to the substrate, the wiring is placed in a region where the EL layer is not placed; and the second electrode is placed over and in contact with the wiring.

Abstract: A high-resolution display apparatus having a light detection function is provided. The display apparatus includes a first pixel, a second pixel, and a third pixel. Each of the first pixel to the third pixel includes a first subpixel, a second subpixel, and a third subpixel. A fourth subpixel is shared by the first pixel and the second pixel. The third pixel includes a fifth subpixel. Full color display is possible using the first subpixel to the third subpixel. The fourth subpixel and the fifth subpixel include any one of a light-emitting device emitting infrared light, a first light-receiving device, and a second light-receiving device and the ones are different from each other.

Abstract: A display device that has a function of emitting visible light and infrared light and a function of detecting light. The display device is a display device including a first light-emitting device, a second light-emitting device, and a light-receiving device, in a display portion. The first light-emitting device includes a first pixel electrode, a first optical adjustment layer, a first light-emitting layer, a second light-emitting layer, and a common electrode. The second light-emitting device includes a second pixel electrode, a second optical adjustment layer, the first light-emitting layer, the second light-emitting layer, and the common electrode. The light-receiving device includes a third pixel electrode, an active layer, and the common electrode. The active layer includes an organic compound. The first light-emitting device emits infrared light emitted by the first light-emitting layer. The second light-emitting device emits visible light emitted by the second light-emitting 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.