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 apparatus includes a sensor layer including sensors; a pixel layer disposed on the sensor layer and including pixel areas and pixels in the pixel areas; and an opaque layer disposed between the sensor layer and the pixel layer and having holes corresponding to light-transmitting areas of pixel areas in which pixels that emit light of a specific color are disposed.

An apparatus for color-dependent detection of image contents includes a light input coupling apparatus, carrier medium, measuring region, output coupling region, and camera apparatus. The light input coupling apparatus includes a light source to emit light at a first wavelength. The carrier medium receives the light and transmits the light by internal reflection to the measuring region. The measuring region includes a first diffraction structure that outputs light at the first wavelength. The first diffraction structure is formed as a multiplex diffraction structure to input light in a second wavelength range. The output coupling region includes a second diffraction structure formed as a multiplex diffraction structure that outputs light at the first wavelength and the second wavelength range. The camera apparatus captures light output from the carrier medium to the camera apparatus, and provides the light in a form of image data which correlates with the light.

An under-screen fingerprint sensing device and fingerprint sensing method are provided. The under-screen fingerprint sensing device includes a fingerprint sensor and a processor. The processor performs a first FFC on a first color original value, a second color original value, and a third color original value provided by the fingerprint sensor to determine whether a target object is a real finger. When the processor determines that the target object is an unreal finger, the processor performs a second FFC on the first color original value, the second color original value, and the third color original value to determine again whether the target object is the real finger.

An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.

An electronic apparatus includes a display panel including a front surface and a rear surface opposite to the front surface, a lower panel having an opening portion defined therein, a fingerprint sensor including an upper portion, a lower portion, and a lateral portion, the sensor being in the opening portion with a space from a side wall of the opening portion, and an adhesive portion to bond the fingerprint sensor to the display panel. The adhesive portion includes a first adhesive portion between the rear surface of the display panel and the upper portion of the fingerprint sensor and a second adhesive portion around at least a portion of the lateral portion of the fingerprint sensor, and a minimum width and a minimum thickness of the second adhesive portion are each at least ½ of a thickness of the fingerprint sensor.

The invention provides an image scanning device and an image scanning method. The image scanning device includes: a display that emits red light, green light, and blue light to expose an object when the object contacts the display; the sensor is arranged below the display, and the sensor obtains a first image corresponding to the red light, a second image corresponding to the green light and a third image corresponding to the blue light; and the processing module is coupled to the sensor and the display, and the processing module generates an object image corresponding to the object according to the first image, the second image and the third image.

A method for controlling a matrix detector, where the detector includes a touch surface, a matrix of imaging pixels arranged in rows and in columns, and an illuminating surface. Each of the pixels has a transistor and a photodiode, where the pixels of at least one row may be activated or deactivated by an addressing device. The pixels of a same column are connected to a charge integrator capable of being powered on to read the content of a pixel when the latter is activated by the addressing device. The matrix control method includes the steps of: as long as a contact has not been detected by the touch surface, controlling the detector in a mode called standby, the standby mode periodically comprising an activation of all the pixels of the matrix detector during a first period of duration by the addressing device, and a deactivation by the addressing device of all the pixels during a second period of duration; and on detection of the contact by the touch surface, controlling the detector in a mode called normal, the normal mode comprising the sequential activation of the pixels row by row, and the reading of the pixel activated in each column by the corresponding charge integrator, by lighting the illuminating surface.

A sensing device of an embodiment includes: a first sensor that acquires three-dimensional shape information on a surface of an object to be sensed; and a second sensor that acquires texture information on the surface or a vicinity of the surface of the object to be sensed at a position having a predetermined positional relation with an information acquisition position in the object to be sensed of the first sensor.

A device for capturing a biometric print of a user, the user compartment including a frontal opening designed for the passage of part of a hand into said user compartment and a lateral opening allowing the passage of the thumb of the user's hand, the lateral opening extending as far as the frontal opening to form a continuous open space, the lateral opening being delimited in a direction of insertion of the user's hand into the user compartment by a user hand positioning stop.