A flat panel display device includes: a first display unit, a second display unit, and a third display unit. The first display unit comprises a (1-1)-th surface facing a (1-2)-th surface, and is configured to display an image on the (1-1)-th surface and enable external light to transmit from the (1-2)-th surface to the (1-1)-th surface. The second display unit comprises a (2-1)-th surface facing a (2-2)-th surface, and is configured to display an image on the (2-1)-th surface and enable external light to transmit from the (2-2)-th surface to the (2-1)-th surface. The third display unit comprises a (3-1)-th surface facing a (3-2)-th surface, and is configured to display an image on the (3-1)-th surface. The third display unit is disposed between the first display unit and the second display unit.

A display device includes a plurality of divided pixels each comprising a reflective electrode, a counter electrode provided so as to face the reflective electrode, a color filter provided on a side of the counter electrode opposite to a side of the counter electrode facing the reflective electrode, and a holding unit configured to hold a potential corresponding to an expression of a gradation; and an inorganic light emitter provided on the counter electrode side of the color filter, and configured to emit light.

A semiconductor device with low power consumption is provided. The semiconductor device includes a controller, a register, and an image processing portion. The image processing portion has a function of processing image data using a parameter. The image processing portion takes the image data from a frame memory and takes the parameter from the register. The frame memory has a function of retaining the image data while power supply is stopped. The register has a function of retaining the parameter while power supply is stopped. The controller has a function of controlling power supply to the register, the frame memory, and the image processing portion.

A display device that achieves both high detection sensitivity of the touch sensor unit and smooth input on the touch sensor unit is provided. A method for driving a display device includes a first period and a second period. The display device includes pixels, a gate driver, and a touch sensor unit. The touch sensor unit detects a touch in the first period and stops detecting a touch in the second period. The gate driver supplies signals to some of the pixels and does not supply signals to the other pixels in the second period.

A novel display panel that is highly convenient or highly reliable is provided. In addition, a novel input/output device that is highly convenient or highly reliable is provided. Furthermore, a novel data processor that is highly convenient or highly reliable is provided. A structure including a pixel and a functional film in which the functional film includes a region overlapping with the pixel, the pixel includes a first display element and a second display element, the functional film includes a first region and a second region, the first region includes a region overlapping with the first display element, and the second region includes a region overlapping with the second display element and has a function of transmitting less polarized light as compared with light transmitted through the first region has been devised.

Provided are a display control circuit and a driving method thereof, and a display panel and manufacturing and controlling methods thereof, in the field of display technology. The display control circuit includes: a driving sub-circuit configured to provide a control signal from the control signal terminal to the control node; a first switching sub-circuit configured to provide a data signal from the data signal terminal to the OLED; and a second switching sub-circuit configured to provide the data signal to the liquid crystal display unit. The first switching sub-circuit and the second switching sub-circuit operate at different periods of time.

A display panel includes pixels connected to each of gate lines and data lines. Each of the pixels includes a first transistor connected between a corresponding data line among the data lines and a first node and configured to deliver a data signal of the corresponding data line to the first node in response to an input signal received through a corresponding gate line among the gate lines, a reflective element circuit connected to the first node, and configured to implement the reflective mode in response to a signal of the first node when a first mode selection signal indicates a reflective mode, an emissive element circuit connected to a second node, and configured to implement the emissive mode in response to the signal of the first node when the mode selection mode indicates an emissive mode.

A novel information processing device that is highly convenient is provided. The information processing device includes a selection circuit having a function of supplying image data to a reflective display element, a light-emitting element, or both of them on the basis of input position coordinate data, sensing data about the illuminance of the usage environment, and the image data. An icon with high selection frequency is displayed by both the reflective display element and the light-emitting element on the basis of icon coordinate data and the input position coordinate data, so that the icon can be displayed brightly with improved visibility.

An organic light emitting display device includes a plurality of pixels, each of the plurality of pixels including: a first sub-pixel configured to emit light of a first color; a second sub-pixel configured to emit light of a second color that is different from the first color; a third sub-pixel configured to emit light of a third color that is different from the first and second colors; and a transmission sub-pixel configured to selectively transmit external light in response to an electrical signal.

A highly convenient electronic device used while being worn on a body is provided. The electronic device is an arm-worn electronic device including a display panel, a power storage device, a circuit, and a sealing structure. The display panel displays an image with power supplied from the power storage device. The circuit includes an antenna and charges the power storage device wirelessly. Inside the sealing structure, the display panel, the power storage device, and the circuit are provided. The sealing structure includes a portion that transmits visible light. The sealing structure can be worn on an arm or is connected to a structure body that can be worn on an arm.