Provided herein are a calibration method for a fingerprint sensor and a display device using the calibration method, where, in the calibration method for a fingerprint sensor, the fingerprint sensor includes a substrate, a light-blocking layer located on a first surface of the substrate and having openings formed in a light-blocking mask, a light-emitting element layer located on the light-blocking layer and having a plurality of light-emitting elements, and a sensor layer located on a second surface of the substrate and having a plurality of photosensors; and the calibration method includes generating calibration data through white calibration and dark calibration, and applying offsets to the plurality of photosensors using the calibration data.

A display device and a driving method thereof are provided. The display device includes a display panel that includes a first display area in which a plurality of first pixels are disposed and a second display area in which a plurality of second pixels are disposed; and at least one sensor overlapping the second display area and not overlapping the first display area of the display panel, wherein the plurality of first pixels and the plurality of second pixels are connected to a scan line providing a scan signal and a data line providing a data signal, and wherein the plurality of first pixels are not connected to a sensing control line providing a sensing control signal that senses an anode voltage of a light emitting element.

A sensing circuit and a correction method thereof, a pixel driving module and a sensing method thereof, and a display apparatus, the sensing circuit includes: an operation amplifier (AMP), an integration capacitor (Cfb), a first switch (S1), a second switch (S2), a third switch (S3), a fourth switch (S4), a fifth switch (S5) and a sixth switch (S6).

A display control device includes: a photodetection sensor configured to detect light from pixels of display screens with both a first display device and a second display device with a pixel size different from that of the first display device in a display system in which a video signal is displayed on a plurality of display devices adjacent to each other as detection targets; and a display adjustor configured to determine a degree of enlargement or reduction of video signals displayed on the display devices on the basis of a difference between the pixel size of the first display device and the pixel size of the second display device based on a result of detection from the photodetection sensor.

A display apparatus capable of image capturing with high sensitivity is provided. The display apparatus is configured to include first to third switches, a first transistor, a second transistor, and a light-emitting/receiving element. The first switch is electrically connected to a gate of the first transistor. The second switch is positioned between one of a source and a drain of the first transistor and one electrode of the light-emitting/receiving element. The third switch is positioned between the one electrode of the light-emitting/receiving element and a gate of the second transistor. The other of the source and the drain of the first transistor is supplied with a first potential. The other electrode of the light-emitting/receiving element is supplied with a second potential. The light-emitting/receiving element has a function of emitting light of a first color and a function of receiving light of a second color.

Embodiments of the present disclosure provide a display device comprising: a substrate; a thin film transistor layer on a first surface of the substrate and including a first hole; a light emitting element layer on the thin film transistor layer and including a light emitting element; a first light blocking layer between the substrate and the thin film transistor layer and including a second hole overlapping the first hole in a thickness direction of the substrate; and a second light blocking layer between the thin film transistor layer and the light emitting element layer and including a third hole overlapping the first hole and the second hole in the thickness direction of the substrate.

A display panel, a manufacture method thereof and a display apparatus are provided. The display panel includes a display area, which includes a plurality of pixel units, wherein the pixel units include electroluminescent display devices and pixel drive circuits for driving the electroluminescent display devices to emit light; the electroluminescent display devices include light-emitting devices and virtual light-emitting devices; the light-emitting devices are electrically connected with the pixel drive circuits, while the virtual light-emitting devices are not connected with the corresponding pixel drive circuits; the display area includes a first display area and a second display area; and in the first display area and the second display area, the distribution density of the electroluminescent display devices is the same, and the density of the pixel drive circuits in the second display area is less than that of the pixel drive circuits in the first display area.

A second display region has a lower pixel density than a first display region. A third metal layer is located upper than a first metal layer and a second metal layer. The occupancy of the third metal layer in the second display region is lower than the occupancy in the first display region. In a pixel unit, the first metal layer includes a first electrode region to control an amount of electric current in a driving transistor, the second metal layer includes a second electrode region and a third electrode region to supply current to the driving transistor, and the third metal layer includes a main region to form a capacitor included in a capacitive element to store a control voltage for the driving transistor, and an island region surrounded by the main region with a gap and interconnected with a lower electrode region by a via region.

A novel display apparatus is provided. The display apparatus includes a first layer including a plurality of pixel circuits, a second layer provided over the first layer, a plurality of optical lenses provided over the second layer, a display region, and a plurality of light-receiving regions. The display region includes a first pixel circuit provided in the first layer and a light-emitting device provided in the second layer. The light-receiving region includes a second pixel circuit provided in the first layer and a light-receiving device provided in the second layer. The plurality of light-receiving regions are provided around the display region. The optical lens is provided at a position overlapping with the light-receiving region.

A display device with an imaging function is provided. A high-resolution imaging device or display device is provided. The display device includes first to third switches, first and second transistors, a capacitor, first and second wirings, and a light-emitting and light-receiving element. One electrode of the first switch is electrically connected to the first wiring, and the other electrode is electrically connected to a gate of the first transistor and one electrode of the capacitor. One electrode of the second switch is electrically connected to one of a source and a drain of the first transistor, one electrode of the light-emitting and light-receiving element, and the other electrode of the capacitor, and the other electrode of the second switch is electrically connected to a gate of the second transistor and one electrode of the third switch. The other electrode of the third switch is electrically connected to the second wiring. The light-emitting and light-receiving element has a function of emitting light of a first color and a function of receiving light of a second color.