Abstract: 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.

Abstract: The present invention provides an electronic device, used for sensing a fingerprint image of a finger and comprising a display module, a sensing module, and a controller. The display module comprises a plurality of light emitting pixels arranged in an array, has a fingerprint sensing region, and is configured to provide an irradiation beam to the finger. The sensing module is disposed below the fingerprint sensing region and is configured to receive the irradiation beam reaching the sensing module after being reflected by the finger, so as to generate the fingerprint image. The controller is electrically connected to the display module to control light emission of the display module, wherein the controller calculates a distribution curve of light intensity with respect to position of a plurality of different colored lights at a specific time to control light emission of each light emitting pixel of the display module.

Abstract: An electronic device for sensing a fingerprint image of a finger, and including a light-emitting element, a sensing module, and a controller, is provided. The light-emitting element includes multiple light-emitting pixels arranged in an array, and has a fingerprint sensing region. The sensing module is disposed underneath the fingerprint sensing region to receive an irradiation beam that reaches the sensing module after being reflected by the finger, so as to generate the fingerprint image. The controller is electrically connected to the light-emitting element. The fingerprint sensing region is divided into at least a first region and a second region from its center to its periphery. When the light-emitting element provides the irradiation beam to irradiate the finger, the controller controls a light emission time of the light-emitting pixels in the first region to be shorter than a light emission time of the light-emitting pixels in the second region.

Abstract: An electronic device using an under-display fingerprint identification technology and a waking method of the electronic device are provided. The electronic device includes a display panel, a central processing unit and a fingerprint sensing module. The electronic device executes an operating system. When the central processing unit and the operating system are in a power-saving mode, the fingerprint sensing module enters a default operation mode and the display panel enters an always-on display mode. Then, the fingerprint sensing module senses a specified region of the display panel to acquire a first image. If the content of the first image contains an image of a finger, the fingerprint sensing module issues an interrupt signal to the central processing unit. Consequently, the central processing unit is woken up from the power-saving mode and the operating system is woken up.

Abstract: A method for detecting finger-on or finger-off, including: detecting whether a sensing capacitance value of a sensing signal is higher than a high threshold or lower than a low threshold; and when the sensing capacitance value of the sensing signal is higher than the high threshold, determining that a finger is placed on the fingerprint sensing device and adjusting the high threshold and the low threshold according to the sensing capacitance value and a compensation value, and when the sensing capacitance value of the sensing signal is lower than the low threshold, determining that a finger is removed from the fingerprint sensing device and adjusting the high threshold and the low threshold according to the sensing capacitance value and the compensation value.

Abstract: An electronic device using an under-display fingerprint identification technology and a waking method of the electronic device are provided. The electronic device includes a display panel, a central processing unit and a fingerprint sensing module. The electronic device executes an operating system. When the central processing unit and the operating system are in a power-saving mode, the fingerprint sensing module enters a default operation mode and the display panel enters an always-on display mode. Then, the fingerprint sensing module senses a specified region of the display panel to acquire a first image. If the content of the first image contains an image of a finger, the fingerprint sensing module issues an interrupt signal to the central processing unit. Consequently, the central processing unit is woken up from the power-saving mode and the operating system is woken up.

Abstract: An image sensing device includes a sensing module, including a plurality of sensing units, for generating a plurality of first sensing signals and a plurality of second sensing signals; and a plurality of control units, respectively corresponding to the plurality of sensing units, for exposing the plurality of sensing units based on a first exposure period to generate the plurality of first sensing signals, and determining a plurality of second exposure periods for the corresponding sensing units according to the plurality of first sensing signals, and exposing the plurality of sensing units based on the plurality of second exposure periods to generate the plurality of second sensing signals; wherein the plurality of first sensing signals and the plurality of second sensing signals are generated at different times.

Abstract: Provided is a light-emitting intensity control method, which is suitable for an electronic device. The electronic device includes a processing component, a light-emitting component, and a sensing module. The light-emitting component includes a fingerprint sensing region. The sensing module is disposed below the fingerprint sensing region. The light-emitting intensity control method includes the following steps: controlling, by the processing component, the fingerprint sensing region of the light-emitting component to emit an optimized illumination beam to a finger above the fingerprint sensing region according to optimized data. The light intensity distribution of the optimized illumination beam is non-uniform. The fingerprint sensing region is divided at least into a first region and a second region from the center to the periphery. The light intensity of the first region is smaller than the light intensity of the second region. Besides, an electronic device is also proposed.

Abstract: An image sensing device includes a sensing module, including a plurality of sensing units, for generating a plurality of first sensing signals and a plurality of second sensing signals; and a plurality of control units, respectively corresponding to the plurality of sensing units, for exposing the plurality of sensing units based on a first exposure period to generate the plurality of first sensing signals, and determining a plurality of second exposure periods for the corresponding sensing units according to the plurality of first sensing signals, and exposing the plurality of sensing units based on the plurality of second exposure periods to generate the plurality of second sensing signals; wherein the plurality of first sensing signals and the plurality of second sensing signals are generated at different times.

Abstract: A method for detecting finger-on or finger-off, including: detecting whether a sensing capacitance value of a sensing signal is higher than a high threshold or lower than a low threshold; and when the sensing capacitance value of the sensing signal is higher than the high threshold, determining that a finger is placed on the fingerprint sensing device and adjusting the high threshold and the low threshold according to the sensing capacitance value and a compensation value, and when the sensing capacitance value of the sensing signal is lower than the low threshold, determining that a finger is removed from the fingerprint sensing device and adjusting the high threshold and the low threshold according to the sensing capacitance value and the compensation value.