A display system includes a host device, a display controller, and a display panel. The display panel includes a pixel array including a plurality of subpixels each including a light-emitting display element and a reflective display element. The host device sends image data DT0 to the display controller. The display controller has the following functions: color classification of the image data DT0; generation of attribute data based on the classification result; generation of image data DT1 from the image data DT0; generation of two kinds of image data DT2_e and DT2_r through image processing of the image data DT1 in accordance with the attribute data; generation of image data DT3_e from the image data DT2_e; and generation of image data DT3_r from the image data DT2_r. The image data DT3_e is displayed by the light-emitting display element, and the image data DT3_r is displayed by the reflective display element.

Disclosed in the present invention is a device comprising: a housing including a first surface facing a first direction and a second surface facing a second direction; a transparent cover formed on at least a portion of the first surface of the housing; a display disposed between the transparent cover and the second surface; a sensor disposed between the display and the second surface; and a control circuit, electrically connected to the sensor, for controlling the sensor, wherein the display can comprise: a first region including a plurality of pixels capable of displaying color; and a second region aligned on at least a portion of the sensor such that light acquired from the outside of the electronic device passes through the sensor. The present invention can have various examples.

A display device that can be easily and more flexibly designed is provided. The display device includes a pixel circuit and a driver circuit in a display portion. The driver circuit includes a plurality of pulse output circuits. Each of the plurality of pulse output circuits has a function of driving a gate line. The pixel circuit is electrically connected to the gate line. Each of the plurality of pulse output circuits includes a first transistor. The pixel circuit includes a second transistor. A layer including the second transistor is over a layer including the first transistor, and the first transistor and the second transistor overlap with each other.

A display device includes a first region and a second region adjacent to the first region. A display element included in the first region has a function of reflecting visible light and a function of emitting visible light. A display element included in the second region has a function of emitting visible light. In an electronic device including the display device, the first region is located on a first surface (e.g., top surface) on which a main image is displayed, and the second region is located on a second surface (e.g., side surface) on which an auxiliary image is displayed.

Systems, methods, and devices are disclosed for applying concealment of components of an electronic device. In one embodiment, an electronic device may include a component that is disposed behind a display (e.g., a transparent organic light-emitting diode (OLED) display) that is configured to selectively become transparent at certain transparency regions. Additionally, the electronic device includes data processing circuitry configured to determine when an event requesting that the component be exposed occurs. The data processing circuitry may control portions of the display to become transparent, to expose the component upon the occurrence of the event requesting that the component be exposed.

An object is to provide a semiconductor device with low power consumption. The semiconductor device includes a controller, a register, and an image processing portion. The image processing portion has a function of taking image data from a frame memory and a parameter from the register and processing the image data by using the parameter. 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 controls power supply to the register, the frame memory, and the image processing portion. The register includes first and second scan chain registers. The first scan chain register stores a parameter related to a first display region. The second scan chain register stores a parameter related to a second display region. A parameter is changed by loading of data of the first or second scan chain register.

To provide a display device that achieves both smooth input and a high detection sensitivity on a touch sensor unit. The display device includes a display unit and the touch sensor unit. The display device has three operation modes: normal display in which the entire display region is rewritten, partial IDS driving in which part of the display region is rewritten, and IDS driving in which the entire display region is not rewritten. The detection operation by the touch sensor unit is performed at a time different from the time of performing the rewriting operation of the display region, so that a high detection sensitivity is achieved. Furthermore, a period of performing the detection operation in each of the partial IDS driving and the IDS driving is set longer than a period of performing the detection operation in the normal display, which enables smooth input.

The present application discloses a display panel having an array of a plurality of subpixels. The display panel includes a plurality of light modulators configured to modulate display contrast of the display panel. Each of the plurality of light modulators is in a light modulation region configured to allow light transmitting through the display panel. Light transmittance in the light modulation region is controlled by a first gate line and a first data line for driving image display in a first subpixel of the plurality of subpixels.

An object is to provide a semiconductor device with low power consumption. The semiconductor device includes a controller, a register, and an image processing portion. The image processing portion has a function of taking image data from a frame memory and a parameter from the register and processing the image data by using the parameter. 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 controls power supply to the register, the frame memory, and the image processing portion. The register includes first and second scan chain registers. The first scan chain register stores a parameter related to a first display region. The second scan chain register stores a parameter related to a second display region. A parameter is changed by loading of data of the first or second scan chain register.

Provided is a novel display panel that is highly convenient or reliable or a display panel with a high pixel aperture ratio. The display panel includes the first display element, the first conductive film electrically connected to the first display element, the second conductive film having a region overlapping with the first conductive film, the second insulating film having a region sandwiched between the second conductive film and the first conductive film, a pixel circuit electrically connected to the second conductive film, and the second display element electrically connected to the pixel circuit. The second insulating film includes an opening, and the second conductive film is electrically connected to the first conductive film in the opening.