Abstract: A laser processing apparatus and a stack processing apparatus are provided. The laser processing apparatus includes a laser oscillator and an optical system for forming a linear beam and an x-y-? or x-? stage. With use of the x-y-? or x-? stage, the object to be processed can be moved and rotated in the horizontal direction. With this operation, a desired region of the object to be processed can be efficiently irradiated with laser light, and the area occupied by a chamber provided with the x-y-? or x-? stage can be made small.

Abstract: A display apparatus with low power consumption is provided. The display apparatus includes an adder circuit and a pixel having a function of adding data, and the adder circuit has a function of adding data supplied from a source driver. The pixel has a function of adding data supplied from the adder circuit. Thus, in the pixel, a voltage several times higher than the output voltage of the source driver can be generated and supplied to a display device. With such a structure, the output voltage of the source driver can be reduced, so that a display apparatus with low power consumption can be achieved.

Abstract: A display apparatus capable of supplying a high voltage to a display device is provided. A pixel has a function of retaining first data, a function of adding second data to the first data to generate third data, and a function of supplying the third data to the display device. Capacitive coupling by a capacitor is used for data addition. Two pixels provided in the vertical direction (the direction in which a source line extends) share components including the capacitor; thus, the area where the two pixels are provided can be assigned to the capacitor, which can increase the capacitance value. Thus, the data addition by the capacitive coupling can be efficiently performed.

Abstract: An imaging device with low power consumption is provided. The pixel of the imaging device includes first and second photoelectric conversion elements, and first to fifth transistors. A cathode of the first photoelectric conversion element is electrically connected to the first transistor. An anode of a second photoelectric conversion element is electrically connected to the second transistor. Imaging data of a reference frame is obtained using the first photoelectric conversion element, and then imaging data of a difference detection frame is obtained using the second photoelectric conversion element. After the imaging data of the difference detection frame is obtained, a first potential that is a potential of a signal output from the pixel and a second potential that is a reference potential are compared. Whether or not there is a difference between the imaging data of the reference frame and the imaging data of the difference detection frame is determined using the first potential and the second potential.

Abstract: A display device capable of improving image quality is provided. The display device is provided with an adder circuit in and outside a display region, and the adder circuit has a function of adding a plurality of data supplied from a source driver together. Components of the adder circuit are divided and partly arranged in the display region. Thus, limitation on the size of the component included in the adder circuit can be eased, and data addition can be performed efficiently. In addition, by providing other components included in the adder circuit outside the display region, the number of wirings in the display region can be reduced and the aperture ratio of the pixel can be increased.

Abstract: A display device with a narrow bezel is provided. The display device includes a pixel circuit and a driver circuit which are provided on the same plane. The driver circuit includes a selection circuit and a buffer circuit. The selection circuit includes a first transistor. The buffer circuit includes a second transistor. The first transistor has a region overlapping with the second transistor. One of a source and a drain of the first transistor is electrically connected to a gate of the second transistor. One of a source and a drain of the second transistor is electrically connected to the pixel circuit.

Abstract: 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.

Abstract: A display apparatus having an excellent boosting function is provided. The display apparatus is provided with a pixel having a function of adding data (a boosting function). A capacitor for boosting voltage is provided in the pixel, and data is added by capacitive coupling to be supplied to a display device. The capacitor for boosting voltage and a capacitor for retaining data are placed on top of each other, whereby the capacitance value of the capacitor for boosting voltage can be increased. Thus, the pixel can have an excellent boosting function, without significantly losing the aperture ratio or definition.

Abstract: A display device capable of performing image processing is provided. A memory node is provided in each pixel included in the display device. An intended correction data is held in the memory node. The correction data is calculated by an external device and written into each pixel. The correction data is added to image data by capacitive coupling, and the resulting data is supplied to a display element. Thus, the display element can display a corrected image. The correction enables image upconversion, for example.

Abstract: A display device capable of improving image quality is provided. The display device includes a plurality of capacitors, a plurality of transistors, and a display element in a pixel. The plurality of capacitors are connected in series through a wiring, and one of the plurality of transistors is electrically connected to one electrode of the plurality of capacitors connected in series, the other electrode thereof, and the wiring. The display element can operate in accordance with the sum of a plurality of pieces of input data, so that image correction such as image upconversion, HDR display, or improvement in the luminance can be performed.

Abstract: An imaging device capable of executing image processing is provided. A structure is employed in which a photoelectric conversion element, a first transistor, a second transistor, and an inverter circuit are included; one electrode of the photoelectric conversion element is electrically connected to one of a source and a drain of the first transistor; the other of the source and the drain of the first transistor is electrically connected to one of a source and a drain of the second transistor; the one of the source and the drain of the second transistor is electrically connected to an input terminal of the inverter circuit; and data obtained by photoelectric conversion is binarized and output.

Abstract: 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.

Abstract: A semiconductor device capable of retaining a signal sensed by a sensor element is provided. The semiconductor device includes a sensor element, a first transistor, a second transistor, and a third transistor. One electrode of the sensor element is electrically connected to a first gate. The first gate is electrically connected to one of a source and a drain of the third transistor. One of a source and a drain of the first transistor is electrically connected to a gate of the second transistor. A semiconductor layer includes a metal oxide.

Abstract: A foldable display apparatus with excellent portability is provided. The display apparatus includes a flexible display panel, which can be folded in a small size. The display apparatus has a tri-fold mechanism, in which a region folded with a first surface itself of the display apparatus facing each other and a region folded with a second surface opposite to the first surface itself facing each other can be formed. Thus, even a display panel which has a relatively high aspect ratio can be folded in a small size by provision of a folding crease in the short-axis direction, so that portability can be improved.

Abstract: A display device capable of improving image quality is provided. The display device includes a first circuit, a pixel, and a wiring. The first circuit has a function of supplying data to the wiring and a function of making the wiring floating to hold the data. The pixel has a function of taking in the data twice from the wiring and performing addition. The pixel can perform the first writing of the data in a period during which the data is supplied to the wiring, and can perform the second writing of the data in a period during which the data is held in the wiring. Therefore, by one time of data charging to a source line, a data potential larger than or equal to an output voltage of a source driver can be supplied to a display element.

Abstract: A support for supporting a flexible component is provided. A flexible component support can be folded without decreasing the reliability of the flexible component. The support has a region where two different hinges overlap each other, and bending operation in the region can be performed only in one direction from a flat surface state. Accordingly, even in the case where unintended bending stress is applied to the region in an opposite direction, the flexible component or the support can be protected. In addition, the two hinges can each include position correction mechanism, which enables stable bending operation.

Abstract: A display device capable of improving image quality is provided. The display device includes a first circuit, a pixel, and a wiring. The first circuit has a function of supplying data to the wiring and a function of making the wiring floating to hold the data. The pixel has a function of taking in the data twice from the wiring and performing addition. The pixel can perform the first writing of the data in a period during which the data is supplied to the wiring, and can perform the second writing of the data in a period during which the data is held in the wiring. Therefore, by one time of data charging to a source line, a data potential larger than or equal to an output voltage of a source driver can be supplied to a display element.

Abstract: 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.

Abstract: A display device with a narrow bezel is provided. The display device includes a pixel circuit and a driver circuit which are provided on the same plane. The driver circuit includes a selection circuit and a buffer circuit. The selection circuit includes a first transistor. The buffer circuit includes a second transistor. The first transistor has a region overlapping with the second transistor. One of a source and a drain of the first transistor is electrically connected to a gate of the second transistor. One of a source and a drain of the second transistor is electrically connected to the pixel circuit.

Abstract: An imaging device having a three-dimensional integration structure is provided. A first structure including a transistor including silicon in an active layer or an active region and a second structure including an oxide semiconductor in an active layer are fabricated. After that, the first and second structures are bonded to each other so that metal layers included in the first and second structures are bonded to each other; thus, an imaging device having a three-dimensional integration structure is formed.