Abstract: Devices are provided for providing on-screen optical sensing of fingerprints by using an under-screen optical sensor module for improved optical fingerprint sensing including using an optical sensor module to include (1) an optical sensor array of optical detectors to detect light that carries a fingerprint pattern, (2) a pinhole layer structured to include an array of pinholes and located above the optical sensor array to spatially filter incident light to be detected by the optical detectors; and (3) a lens layer structured to include an array of lenses formed above the pinhole layer where the lenses are spatially separated and positioned so that one lens is placed above one corresponding pinhole in the array of pinholes and different lenses in the lens array are placed above different pinholes in the array of pinholes, respectively, to allow the optical sensor array to receive and detector the incident light.

Abstract: Devices and optical sensor modules are provided for provide on-screen optical sensing of fingerprints by using an under-screen optical sensor module that captures and detects returned light that is emitted by the display screen for displaying images and that is reflected back by the top surface of the screen assembly. Optical collimators are provided in the under-screen optical sensor module to enhance the optical imaging performance. Techniques for reducing the environmental light in the optical sensing are provided.

Abstract: Optical sensing is provided with a large sensing area in a thin package. For example, embodiments can operate in context of an under-display optical fingerprint sensor integrated into an electronic device, such as a smartphone. Responsive to reflected probe light passing through a display module, a reflective structure is configured to redirect the reflected probe light onto a refractive structure, and the refractive structure is configured to converge the reflected probe light into an input aperture of an optical sensor for detection. Some embodiments operate in context of an enhancement panel having micro-prism structures that tend to blur the reflected probe light. In such context, embodiments are configured for off-axis detection to prefer light passing through only certain micro-prism faces, thereby mitigating blurring.

Abstract: An optical sensor can include a transmitter for transmitting a light and one or more optical receivers or sensors to receive light reflected from other vehicles and objects. The apparatus can include a first optical angle sensor to receive from an object first reflected light at a first angle between the object and the first angle sensor. The apparatus can further include a second optical angle sensor to receive second reflected light from the object at a second angle between the object and the second angle sensor. The first reflected light and the second reflected light can be the transmitted light reflected from the object. Circuitry can receive the first and second angles from the first and second optical angle sensors and can process the measured first and second angles to determine the position of the object.

Abstract: A method for adjusting a touch screen, a touch chip, and an electronic terminal are provided. The method for adjusting a touch screen includes: receiving a characteristic signal corresponding to a usage scenario type of a terminal device that includes the touch screen; acquiring a touch screen adjustment parameter corresponding to the characteristic signal, where the touch screen adjustment parameter includes: at least one of a chip simulation parameter for controlling a touch chip of the touch screen and a firmware algorithm parameter; and adjusting an operating state of the touch screen based on the touch screen adjustment parameter. Through the embodiments of the present disclosure, a user can get excellent experience when using the touch screen in various usage scenarios.

Abstract: Optical sensing is provided to detect two-dimensional spoof objects using bright-dark reversal imaging. For example, embodiments can operate in context of an under-display optical fingerprint sensor integrated into an electronic device, such as a smartphone. An optical scanning system is configured so that direct illumination incident on a defined sensing region is redirected, by internal specular reflection off of a contact surface, onto an optical sensor in a bright-dark pattern corresponding to the pattern of contact an object and the contact surface. Masking of direct illumination in a certain region of the contact surface inhibits specular reflection in that region, such that optical information is directed to the optical sensor from that region only by non-specular reflection. Three-dimensional (real) and two-dimensional (spoof) objects tend to manifest different optical responses to the lack of specular reflection in the masked region, which can be exploited to detect such spoofs.

Abstract: Devices and optical sensor modules are provided for provide on-screen optical sensing of fingerprints by using an under-screen optical sensor module that captures and detects optical transmissive patterns in probe light that transmits through the internal finger tissues associated with the external fingerprint pattern formed on the outer finger skin to provide 3-dimensional topographical information for improved optical fingerprint sensing.

Abstract: In one aspect, a fingerprint sensor device includes a touch panel with an integrated touch sensor module. The integrated touch sensor module includes sensing circuitry to generate a sensor signal responsive to detecting a contact input associated with a fingerprint. The sensing circuitry includes a fingerprint sensor to detect the contact input and generate a signal indicative of an image of the fingerprint, and a biometric sensor to generate a signal indicative of a biometric marker different form the fingerprint. The generated sensor signal includes the signal indicative of the image of the fingerprint and the signal indicative of the biometric marker different from the fingerprint. The sensing circuitry includes processing circuitry communicatively coupled to the sensing circuitry to process the generated sensor signal to determine whether the contact input associated with the fingerprint belongs to a live finger.

Abstract: Optical sensing is provided with a compensated light paths. For example, embodiments can operate in context of an under-display optical fingerprint sensor integrated into an electronic device, such as a smartphone. Responsive to reflected probe light passing through a display module, a compensation structure is configured to compensate for divergent refracting of the reflected probe light caused by backlighting enhancement structures. Some embodiments operate in context of an enhancement panel having micro-prism structures that tend to blur the reflected probe light. In such context, embodiments are configured to provide one or more compensation film layers to compensate for optical effects of the enhancement panel, thereby mitigating blurring and/or other undesirable optical conditions.

Abstract: Devices and optical sensor modules are provided for provide on-screen optical sensing of fingerprints by using an under-screen optical sensor module that captures and detects light from a fiber on top of the screen. Various implementations of the under-LCD optical sensor modules are provided, including different optical imaging module designs for under-LCD optical sensing, invisible under-LCD optical sensor modules based on concealing optical transmissive features or regions under the LCD opaque borders and optical sensing of topographical features associated with inner tissues of a finger.

Abstract: Improved under-display illumination is provided for display modules integrated in electronic devices. For example, a display module can include a number of display micro-structures, such as pixels and electrodes. Much of the illumination energy from conventional under-display illumination (e.g., for backlighting) can tend to be blocked by the micro-structures and can also tend to damage the micro-structures. Novel arrangements of optical structures are provided herein to output under-display illumination energy and to direct the energy in a manner that passes completely or mostly through gaps between the display micro-structures. Some implementations provide additional features, such as light conditioning to facilitate transmission of light energy through a dark coating layer, and/or use of multiple optical structures to provide illumination energy with different optical characteristics.

Abstract: Optical sensing is provided with a compensated light paths. For example, embodiments can operate in context of an under-display optical fingerprint sensor integrated into an electronic device, such as a smartphone. Responsive to reflected probe light passing through a display module, a compensation structure is configured to compensate for divergent refracting of the reflected probe light caused by backlighting enhancement structures. Some embodiments operate in context of an enhancement panel having micro-prism structures that tend to blur the reflected probe light. In such context, embodiments are configured to provide one or more compensation film layers to compensate for optical effects of the enhancement panel, thereby mitigating blurring and/or other undesirable optical conditions.

Abstract: Embodiments of the application provide a capacitive apparatus and a method for producing the same. The capacitive apparatus includes at least one capacitor; where the at least one capacitor includes at least one first dielectric layer and at least one second dielectric layer, the first dielectric layer has a positive voltage coefficient and the second dielectric layer has a negative voltage coefficient; and/or the first dielectric layer has a positive temperature coefficient and the second dielectric layer has a negative temperature coefficient. Using a principle of positive and negative cancellation, when the at least one capacitor is regarded as a whole, a voltage coefficient and/or a temperature coefficient thereof may be zero or close to zero. Thus, when a bias voltage or a temperature of the at least one capacitor changes, a capacitance value thereof does not change or changes slightly, thereby effectively ensuring the performance of the capacitive apparatus.

Abstract: A wearable device for capacitive coupled communications is described. The wearable device includes capacitive sensor transceiver circuitry configured to receive a capacitive coupled signal from a host device. The capacitive coupled signal is received through a body of a user of the wearable device and is modulated to include a request for authentication data to authenticate the wearable device with the host device. The wearable device includes processing circuitry in communication with the capacitive sensor transceiver circuitry to process the received capacitive coupled signal and transmit authentication data modulated on a capacitive coupled reply signal to the host device. The capacitive coupled reply signal modulated with the authentication data is transmitted through the body of the user of the wearable device.

Abstract: The disclosed optical sensing technology can be implemented to provide optical fingerprint sensing while a user finger is located near a device while not in contact with the device for user authentication in accessing the device and can further provide optical fingerprint sensing while a user finger is in contact with the device. In some implementations, the optical fingerprint sensing can be performed on a finger in contact and non-contact instances to enhance the fingerprint sensing and to provide anti-spoofing in the optical sensing. For example, multiple fingerprint images can be captured when a finger is located near a device while not in contact with the device and when the finger is in contact with the device. The captured fingerprint images of the non-contact finger and the captured fingerprint images of the contact finger provide two different types of optical fingerprint sensing mechanisms and can collectively enhance the fingerprint sensing performance and anti-spoofing feature.

Abstract: Techniques are described for implementing an immediate-mode camera for integration into portable personal electronic device (PPED) environments. Embodiments of the IMC can include an integrated digital camera that can be triggered directly by one or more user interface components, without involving waking up the application processor, waking up display components, waking up digital camera components, and/or starting up camera-related applications. For example, if a user's smart phone is locked, and the user desired to capture a photo, the user can interact with particular UI components in a particular manner, thereby directly triggering capture of image data by the IMC substantially without delay. Implementations of the IMC can involve a low-power, always-on digital camera that is directly controllable by one or more always-on user interface components. The IMC components can be in communication with an always-on region of the application processor via a fast hardware interface.

Abstract: Optical enhancement and diffuser panels are provided for liquid crystal modules integrated in electronic devices. For example the enhancement and diffuser panels can be for backlight enhancement and diffusing in electronic devices having an integrated optical fingerprint sensor. The enhancement and diffuser panels include film layers that refract and diffuse light passing through in one direction (e.g., toward a display panel), while providing clear viewing windows for light passing through in the opposite direction (e.g., toward an under-display optical sensor). For example, the film layers can provide backlight enhancement and diffusing, without blurring reflected probe light used for optical sensing.

Abstract: Optical enhancement and diffuser panels are provided for liquid crystal modules integrated in electronic devices. For example the enhancement and diffuser panels can be for backlight enhancement and diffusing in electronic devices having an integrated optical fingerprint sensor. The enhancement and diffuser panels include film layers that refract and diffuse light passing through in one direction (e.g., toward a display panel), while providing clear viewing windows for light passing through in the opposite direction (e.g., toward an under-display optical sensor). For example, the film layers can provide backlight enhancement and diffusing, without blurring reflected probe light used for optical sensing.

Abstract: Techniques are described for implementing an immediate-mode camera for integration into portable personal electronic device (PPED) environments. Embodiments of the IMC can include an integrated digital camera that can be triggered directly by one or more user interface components, without involving waking up the application processor, waking up display components, waking up digital camera components, and/or starting up camera-related applications. For example, if a user's smart phone is locked, and the user desired to capture a photo, the user can interact with particular UI components in a particular manner, thereby directly triggering capture of image data by the IMC substantially without delay. Implementations of the IMC can involve a low-power, always-on digital camera that is directly controllable by one or more always-on user interface components. The IMC components can be in communication with an always-on region of the application processor via a fast hardware interface.

Abstract: Optical enhancement and diffuser panels are provided for liquid crystal modules integrated in electronic devices. For example the enhancement and diffuser panels can be for backlight enhancement and diffusing in electronic devices having an integrated optical fingerprint sensor. The enhancement and diffuser panels include film layers that refract and diffuse light passing through in one direction (e.g., toward a display panel), while providing clear viewing windows for light passing through in the opposite direction (e.g., toward an under-display optical sensor). For example, the film layers can provide backlight enhancement and diffusing, without blurring reflected probe light used for optical sensing.