Abstract: An image sensing method, applicable to the anti-spoofing recognition of under screen optical fingerprint sensing, is provided, including: dividing the image sensor into sensing blocks, dividing the display area of the display device correspondingly according to the sensing area, and the display area including the light-emitting area; defining the luminous color of each display area and the color coordinate value of each luminous color; each sensing block sensing the light intensity of the image reflected to the sensing block from the display block emitting the light onto the reference object and the test object to be measured; calculating the anti-spoofing reference color information of the reference object and registering in the system; when sensing the fingerprint image, first obtaining the light intensity of each block, then calculating the color information of the test object; and finally, comparing the color information with the registered anti-spoofing reference color information.

Abstract: An optical identification module including a sensor and a collimator is provided. The sensor has a plurality of sensing regions. The collimator is disposed on the plurality of sensing regions, and the collimator includes a transparent substrate, a first light shielding layer, and a plurality of microlenses. The first light shielding layer includes a plurality of first openings. The plurality of microlenses are disposed on a first surface of the transparent substrate, and the plurality of microlenses correspond to the plurality of first openings respectively.

Abstract: A fingerprint sensing device including a light guide cover plate, a light source, an image sensor, and a light output element is provided. The light guide cover plate includes a flat plate portion and a light entering portion. The flat plate portion has a first surface and a second surface opposite to each other. The light entering portion is located at the second surface, and has an inclined light incident surface inclined with respect to the first surface and the second surface. The light source is configured to emit a light beam. The light beam is transmitted to the light entering portion and the flat plate portion in sequence via the inclined light incident surface. The light output element is disposed on the second surface, and guides the light beam in the flat plate portion to the image sensor.

Abstract: An optical element includes a bottom surface, a total reflection surface above the bottom surface, a recess recessed from the bottom surface toward the total reflection surface and first and second light exit surfaces. The optical element has a central axis perpendicular to the bottom surface. The total reflection surface has a peripheral boundary away from the central axis. The first light exit surface is connected to the peripheral boundary of the total reflection surface and extends toward the bottom surface away from the central axis. The second light exit surface is connected to the first light exit surface, extends away from the central axis, and is connected to the bottom surface. Each of the first and second light exit surfaces is consisted of at least one linear sub-refractive surface. Each linear sub-refractive surface is a straight line in any cross section passing through the central axis.

Abstract: A fingerprint sensing device including a light guide cover plate, a light source, an image sensor, and a light output element is provided. The light guide cover plate includes a flat plate portion and a light entering portion. The flat plate portion has a first surface and a second surface opposite to each other. The light entering portion is located at the second surface, and has an inclined light incident surface inclined with respect to the first surface and the second surface. The light source is configured to emit a light beam. The light beam is transmitted to the light entering portion and the flat plate portion in sequence via the inclined light incident surface. The light output element is disposed on the second surface, and guides the light beam in the flat plate portion to the image sensor.

Abstract: An electronic device and a fingerprint sensing method are provided. The electronic device includes a display panel, a fingerprint sensor, and an integrated driver chip. The display panel includes a plurality of pixel units arranged in an array. The integrated driver chip integrates a display driver circuit and a fingerprint sensing circuit. When the pixel units of the display panel are in an undriven state and a finger object is in contact with a sensing area of the display panel to perform a fingerprint unlock operation, the display driver circuit drives at least a portion of the pixel units corresponding to the sensing area, so that at least a portion of the pixel units provide illumination light to the sensing area. The fingerprint sensing circuit drives the fingerprint sensor to capture a fingerprint feature image of the finger object.

Abstract: An integrated circuit having an optical structure is provided. The integrated circuit includes a semiconductor substrate and a plurality of light guiding pattern layers. The light guiding pattern layers are located above the semiconductor substrate, and each of the light guiding pattern layers has a plurality of openings and a plurality of side wall portions corresponding to the openings. Each of the side wall portions surrounds the corresponding opening. A projection of one of the openings of one of the light guiding pattern layers on the semiconductor substrate at least partially overlaps a projection of one of the openings of the adjacent light guiding pattern layer on the semiconductor substrate, so as to form at least one light via hole and allow external light to be transferred to the semiconductor substrate through the light guiding pattern layers.

Abstract: An optical identification module including a sensor and a collimator is provided. The sensor has a plurality of sensing regions. The collimator is disposed on the plurality of sensing regions, and the collimator includes a transparent substrate, a first light shielding layer, and a plurality of microlenses. The first light shielding layer includes a plurality of first openings. The plurality of microlenses are disposed on a first surface of the transparent substrate, and the plurality of microlenses correspond to the plurality of first openings respectively.

Abstract: A light-emitting apparatus including a light source, a light-diverging element, a conductive structure, and a drive control module is provided. The light source is used to emit a light beam. The light-diverging element is disposed on a transmission path of the light beam, wherein after the light beam passes through the light-diverging element, a plurality of light beams separated from each other are produced. The conductive structure is disposed on a first surface of the light-diverging element. The drive control module is used to drive the light source and is electrically connected to the light source and the conductive structure.

Abstract: An under-screen fingerprint identification device includes an image sensing element, a display element, an optical lens, and a band pass filter element. The band pass filter element is disposed between the image sensing element and the display element. An object to be identified reflects an initial beam to generate a sensing beam, and the sensing beam is transmitted to the image sensing element through the display element, the optical lens, and the band pass filter element. The band pass filter element allows a beam with a specific wavelength range to pass. The specific wavelength range and a wavelength range of the initial beam are partially overlapped.

Abstract: An electronic device and a fingerprint sensing method are provided. The electronic device includes a display panel, a fingerprint sensor, and an integrated driver chip. The display panel includes a plurality of pixel units arranged in an array. The integrated driver chip integrates a display driver circuit and a fingerprint sensing circuit. When the pixel units of the display panel are in an undriven state and a finger object is in contact with a sensing area of the display panel to perform a fingerprint unlock operation, the display driver circuit drives at least a portion of the pixel units corresponding to the sensing area, so that at least a portion of the pixel units provide illumination light to the sensing area. The fingerprint sensing circuit drives the fingerprint sensor to capture a fingerprint feature image of the finger object.

Abstract: A structured light projecting apparatus including a light source module, a beam splitting element, and first and second diffraction optical elements is provided. The light source emits a light beam. The beam splitting element is disposed on a transmission path of the light beam, and splits the light beam into first and second portion light beams. The first diffraction optical element is disposed on a transmission path of the first portion light beam. Multiple light beams are produced after the first portion light beam passes through the first diffraction optical element, so as to form a first structured light. The second diffraction optical element is disposed beside the first diffraction optical element and on a transmission path of the second portion light beam. Multiple light beams are produced after the second portion light beam passes through the second diffraction optical element, so as to form a second structured light.

Abstract: An optical apparatus including a substrate, a light-emitting module, a transparent optical element and a connecting unit is provided. The light-emitting module is disposed over the substrate and is electrically connected with the substrate. The transparent optical element is disposed over the light-emitting module. The transparent optical element includes a transparent substrate and an optical element. The optical element is disposed on the transparent substrate. The optical element and the transparent substrate are integrally formed and made of a same material. The connecting unit is disposed beside the light-emitting module and is used for connecting the transparent optical element to the substrate.

Abstract: An optical identification module including a sensor and a collimator is provided. The sensor has a plurality of sensing regions. The collimator is disposed on the sensing regions, and the collimator includes a transparent substrate and a first light shielding layer. The first light shielding layer is disposed on a first surface of the transparent substrate. The first light shielding layer includes a plurality of first openings. A ratio of a thickness of the first light shielding layer to a width of each of the first openings is greater than 1.

Abstract: A light-emitting apparatus including a light source, a light-diverging element, a conductive structure, and a drive control module is provided. The light source is used to emit a light beam. The light-diverging element is disposed on a transmission path of the light beam, wherein after the light beam passes through the light-diverging element, a plurality of light beams separated from each other are produced. The conductive structure is disposed on a first surface of the light-diverging element. The drive control module is used to drive the light source and is electrically connected to the light source and the conductive structure.

Abstract: An integrated circuit having an optical structure is provided. The integrated circuit includes a semiconductor substrate and a plurality of light guiding pattern layers. The light guiding pattern layers are located above the semiconductor substrate, and each of the light guiding pattern layers has a plurality of openings and a plurality of side wall portions corresponding to the openings. Each of the side wall portions surrounds the corresponding opening. A projection of one of the openings of one of the light guiding pattern layers on the semiconductor substrate at least partially overlaps a projection of one of the openings of the adjacent light guiding pattern layer on the semiconductor substrate, so as to form at least one light via hole and allow external light to be transferred to the semiconductor substrate through the light guiding pattern layers.

Abstract: This invention discloses a system and a method for extracting VF signal in ECG recorded during uninterrupted CPR. The present invention provides a method for extracting a Ventricular fibrillation (VF) signal in Electrocardiography (ECG), comprising: receiving an ECG signal; adding a plurality of shadowing functions to the ECG signal, to obtain a plurality of modification signals; decomposing the plurality of modification signals by using an Empirical Mode Decomposition (EMD) method, to generate a plurality of Intrinsic Mode Functions (IMFs); calculating the sum of IMFs in different frequency regions based on time sequence, dividing by a number of the shadowing signal, to obtain a plurality of modification intrinsic mode functions; combining the plurality of modification IMFs with the same property, to obtain a shape function; modeling the shape functions to obtain a compression signal; and subtracting the compression signal from the ECG signal based on time sequence, to obtain the VF signal.

Abstract: This invention discloses a system and a method for extracting VF signal in ECG recorded during uninterrupted CPR. The present invention provides a method for extracting a Ventricular fibrillation (VF) signal in Electrocardiography (ECG), comprising: receiving an ECG signal; adding a plurality of shadowing functions to the ECG signal, to obtain a plurality of modification signals; decomposing the plurality of modification signals by using an Empirical Mode Decomposition (EMD) method, to generate a plurality of Intrinsic Mode Functions (IMFs); calculating the sum of IMFs in different frequency regions based on time sequence, dividing by a number of the shadowing signal, to obtain a plurality of modification intrinsic mode functions; combining the plurality of modification IMFs with the same property, to obtain a shape function; modeling the shape functions to obtain a compression signal; and subtracting the compression signal from the ECG signal based on time sequence, to obtain the VF signal.

Abstract: The invention provides an epitaxial substrate and fabrication thereof. The epitaxial substrate according to the invention includes a crystalline substrate. In particular, the crystalline substrate has an epitaxial surface which is nano-rugged and non-patterned. The epitaxial substrate according to the invention thereon benefits a compound semiconductor material in growth of epitaxy films with excellent quality. Moreover, the fabrication of the epitaxial substrate according to the invention has advantages of low cost and rapid production.

Abstract: An LED board structure includes a light-pervious substrate having a plurality of light-pervious areas formed thereon, a plurality of patterned conductive traces arranged on the light-pervious substrate at locations other than the light-pervious areas, and a plurality of LEDs correspondingly arranged on the light-pervious areas and respectively having two electrode terminals electrically connected to the patterned conductive traces. With these arrangements, light emitted from the LEDs not only projects forward, but also backwardly passes through the light-pervious areas, so that both sides of the LED board structure are illuminated by the LEDs. A method of manufacturing an LED board structure is also disclosed.