Abstract: A light-emitting apparatus with low power consumption is provided. A light-emitting apparatus including a first light-emitting device and a first color conversion layer. The first light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a layer including a material with a refractive index lower than or equal to 1.75 at 467 nm. The first color conversion layer includes a first substance capable of emission by absorbing light. Light emitted from the first light-emitting device enters the first color conversion layer.

Abstract: A display device capable of high-quality images can be provided. The display device includes a first light-emitting element, a second light-emitting element, and a gap. The first light-emitting element includes a first light-emitting layer and a first electron-injection layer over the first light-emitting layer, and the second light-emitting element includes a second light-emitting layer and a second electron-injection layer over the second light-emitting layer. The first light-emitting element is adjacent to the second light-emitting element. The gap is placed between the first electron-injection layer and first light-emitting layer and the second electron-injection layer and second light-emitting layer. The first electron-injection layer comprises a region projecting from the side surface of the first light-emitting layer, and the second electron-injection layer comprises a region projecting from the side surface of the second light-emitting layer.

Abstract: A high-resolution display device and a fabrication method thereof are provided. The display device includes a first insulating layer; a light-emitting element and a first conductive layer over the first insulating layer; a first layer over the first conductive layer; a second conductive layer over the first layer; a second insulating layer over the light-emitting element, the second conductive layer, and the first insulating layer; and a third conductive layer over the second insulating layer. The light-emitting element includes a fourth conductive layer, a second layer over the fourth conductive layer, a third layer over the second layer, and a fifth conductive layer over the third layer.

Abstract: A positive electrode active material having a high charge-discharge capacity and high safety and a secondary battery including the positive electrode active material are provided. The positive electrode active material includes lithium, a transition metal M, an additive element, and oxygen. The powder volume resistivity of the positive electrode active material is higher than or equal to 1.0×105 ?·cm at a temperature of higher than or equal to 180° C. and lower than or equal to 200° C. and at a pressure of higher than or equal to 0.3 MPa and lower than or equal to 2 MPa. The median diameter of the positive electrode active material is preferably greater than or equal to 3 ?m and less than or equal to 10 ?m.

Abstract: An e-book reader in which destruction of a driver circuit at the time when a flexible panel is handled is inhibited. In addition, an e-book reader having a simplified structure. A plurality of flexible display panels each including a display portion in which display control is performed by a scan line driver circuit and a signal line driver circuit, and a binding portion fastening the plurality of display panels together are included. The signal line driver circuit is provided inside the binding portion, and the scan line driver circuit is provided at the edge of the display panel in a direction perpendicular to the binding portion.

Abstract: A method for manufacturing a display device that can easily achieve higher resolution is provided. A display device having both high display quality and high resolution is provided. A first EL film is deposited over a first pixel electrode, a first sacrificial film is formed to cover the first EL film and a first electrode, and the first sacrificial film and the first EL film are etched, so that a first EL layer is formed over the first pixel electrode. Then, the first sacrificial film is removed to expose the first electrode. Furthermore, a common electrode is formed over the first EL layer and the first electrode. The first EL film is etched by dry etching, and the first sacrificial film is removed by wet etching.

Abstract: A high-resolution or high-definition display device is provided. The display device includes a first light-emitting device and a second light-emitting device. The first light-emitting device includes a first pixel electrode, a first hole-injection layer, a first hole-transport layer, a first light-emitting layer, a first electron-transport layer, a second electron-transport layer, and a common electrode that are stacked in this order. The second light-emitting device includes a second pixel electrode, a second hole-injection layer, a second hole-transport layer, a second light-emitting layer, a third electron-transport layer, a second electron-transport layer, and a common electrode that are stacked in this order. The first light-emitting device and the second light-emitting device have a function of emitting light of different colors from each other.

Abstract: A display device in which a puddle in the vicinity of a partition of a light-emitting element is reduced when a light-emitting layer is formed by a wet process is provided. The display device includes a first anode; a second anode adjacent to the first anode in an X direction; a third anode adjacent to the first anode in a Y direction; a hole-injection layer provided across the first anode to the third anode; a partition provided over the hole-injection layer; a first light-emitting layer; a second light-emitting layer; a third light-emitting layer; and a cathode. The partition includes, in a top view, a first region positioned between the first anode and the third anode and extending in the X direction, and a second region positioned between the first anode and the second anode and extending in the Y direction. The height of the first region is larger than the height of the second region in a cross-sectional view of the partition.

Abstract: A semiconductor device with a high on-state current is provided. The semiconductor device includes a first oxide, a second oxide over the first oxide, a third oxide over the second oxide, a first insulator over the third oxide, a conductor over the first insulator, a second insulator in contact with the second oxide and the third oxide, and a third insulator over the second insulator; the second oxide includes first region to fifth regions; the resistance of the first region and the resistance of the second region are lower than the resistance of the third region; the resistance of the fourth region and the resistance of the fifth region are lower than the resistance of the third region and higher than the resistance of the first region and the resistance of the second region; and the conductor is provided over the third region, the fourth region, and the fifth region to overlap with the third region, the fourth region, and the fifth region.

Abstract: A display device with high resolution is provided. A display device with high display quality is provided. The display device includes a substrate, an insulating layer, a plurality of transistors, and a plurality of light-emitting diodes. The plurality of light-emitting diodes are provided in a matrix over the substrate. Each of the plurality of transistors is electrically connected to at least one of the plurality of light-emitting diodes. The plurality of light-emitting diodes are positioned closer to the substrate than the plurality of transistors are. The plurality of light-emitting diodes emit light toward the substrate. Each of the plurality of transistors includes a metal oxide layer and a gate electrode. The metal oxide layer includes a channel formation region. The top surface of the gate electrode is substantially level with the top surface of the insulating layer.

Abstract: Disclosed is a liquid crystal display device which can be used in a variety of situations and applications. The liquid crystal display device comprises: a first substrate comprising a first display region, a second display region, and a third display region wherein the first display region, the second display region, and the third display region are continuously formed; a second substrate having a form which fits the first substrate; and a liquid crystal interposed between the first substrate and the second substrate. The second display region is interposed between the first display region and the second display region. The second display region is curved, and the first display region and the second display region are substantially flat.

Abstract: A semiconductor device which has favorable electrical characteristics and can be highly integrated is provided. The semiconductor device includes a first insulator; an oxide over the first insulator; a second insulator over the oxide; a first conductor over the second insulator; a third insulator in contact with a top surface of the first insulator, a side surface of the oxide, a top surface of the oxide, a side surface of the second insulator, and a side surface of the first conductor; and a fourth insulator over the third insulator. The third insulator includes an opening exposing the first insulator, and the fourth insulator is in contact with the first insulator through the opening.

Abstract: A high-resolution or high-definition display device is provided.

Abstract: A high-resolution display device is provided. A display device having both high display quality and high resolution is provided. The display device includes a plurality of first light-emitting elements and a plurality of second light-emitting elements. The first light-emitting element comprises a first pixel electrode, a first EL layer, a common layer, and a common electrode. The second light-emitting element comprises a second pixel electrode, a second EL layer, the common layer, and the common electrode. The first EL layer and the second EL layer are provided to be apart from each other, and a side surface of the first EL layer and a side surface of the second EL layer are provided to face each other. A first light-emitting unit, a first intermediate layer, and a second light-emitting unit are stacked in the first EL layer. A third light-emitting unit, a second intermediate layer, and a fourth light-emitting unit are stacked in the second EL layer.

Abstract: One embodiment of the present invention provides a highly reliably display device in which a high mobility is achieved in an oxide semiconductor. A first oxide component is formed over a base component. Crystal growth proceeds from a surface toward an inside of the first oxide component by a first heat treatment, so that a first oxide crystal component is formed in contact with at least part of the base component. A second oxide component is formed over the first oxide crystal component. Crystal growth is performed by a second heat treatment using the first oxide crystal component as a seed, so that a second oxide crystal component is formed. Thus, a stacked oxide material is formed. A transistor with a high mobility is formed using the stacked oxide material and a driver circuit is formed using the transistor.

Abstract: A high-resolution display device is provided. A display device with both high display quality and high resolution is provided. The display device includes a first light-emitting element and a second light-emitting element. The first light-emitting element includes a first pixel electrode, a first EL layer, and a common electrode. The second light-emitting element includes a second pixel electrode, a second EL layer, and the common electrode. An insulating layer is included between the first pixel electrode and the second pixel electrode. The insulating layer includes a first region overlapping with the first EL layer, a second region overlapping with the second EL layer, and a third region positioned between the first region and the second region. A side surface of the first EL layer and a side surface of the second EL layer are positioned over the insulating layer and are provided to face each other.

Abstract: A display device driven at high speed is provided. The display device includes pixels, a first signal line, a second signal line, a scan line, and an insulating layer. The first signal line includes a region overlapping with the second signal line with the insulating layer therebetween. The pixels each include a first transistor and a second transistor. The first signal line functions as one of a source and a drain of the first transistor in each of pixels in one column including a first pixel. In the first pixel, the first transistor includes a first semiconductor layer. The first semiconductor layer includes a region in contact with a sidewall of a first opening in the insulating layer. The second signal line functions as one of a source and a drain of the second transistor in each of the pixels in one row including the first pixel.

Abstract: An adder circuit inhibiting overflow is provided. A first memory, a second memory, a third memory, and a fourth memory are included. A step of supplying first data with a sign to the first memory and supplying the first data with a positive sign stored in the first memory, to the second memory; a step of supplying the first data with a negative sign stored in the second memory, to the third memory; a step of generating second data by adding the first data with a positive sign stored in the second memory and the first data with a negative sign stored in the third memory; and a step of storing the second data in the fourth memory are included. When the second data stored in the fourth memory are all second data with a positive sign or all second data with a negative sign, all the second data stored in the fourth memory are added.

Abstract: A highly reliable display device is provided. The display device including a light-emitting element and an insulating layer placed to cover the light-emitting element and the light-emitting element includes a first conductive layer, an EL layer over the first conductive layer, and a second conductive layer over the EL layer and the insulating layer includes a first layer, a second layer over the first layer, and a third layer over the second layer and the first layer has a function of capturing or fixing at least one of water and oxygen, the second layer has a function of inhibiting diffusion of at least one of water and oxygen, and the third layer has a higher concentration of carbon than at least one of the first layer and the second layer.

Abstract: A novel display device is provided. The display device includes a first layer, a second layer, and a third layer. The first layer, the second layer, and the third layer are provided in different layers. The first layer includes a driver circuit and a functional circuit. The second layer includes a pixel circuit. The third layer includes a display element. The pixel circuit has a function of controlling light emission of the display element. The driver circuit has a function of controlling the pixel circuit. The functional circuit has a function of controlling the driver circuit. The first layer includes a first transistor with a semiconductor layer containing silicon in a channel formation region. The second layer includes a second transistor with a semiconductor layer containing a metal oxide in a channel formation region.