Abstract: A display device and a fingerprint recognition method are provided. The fingerprint recognition device includes at least two photosensitive regions receiving different colors of light, and the color of the light received by one photosensitive region corresponds to the emitted color of the light emitting sub-pixel in one color.

Abstract: Systems and methods are described for a display device in which the recognition failure of a fingerprint recognition sensor disposed in a display area without being exposed to the outside is reduced. The display device comprises a display panel; a cover window disposed above the display panel; an optical sensor, wherein at least a part of the optical sensor is disposed under the display panel; and an infrared blocking member disposed between the optical sensor and the cover window and at least a part of which overlaps the optical sensor from above the optical sensor.

Abstract: A display panel, a manufacturing method thereof and a display device are provided. The display panel includes: a photosensitive sensor; a light shield layer disposed on a sensing side of the photosensitive sensor and including at least one first opening and at least one second opening, the first opening and the photosensitive sensor are overlapped with each other in a direction perpendicular to a surface of the display panel, so that light running through the first opening is irradiated to the photosensitive sensor; and an optical processing film disposed in a region of the light shield layer close to the second opening and on at least a portion of a surface of the light shield layer away from the photosensitive sensor, and a light reflectivity of the optical processing film is less than a light reflectivity of the light shield layer.

Abstract: Method for taking a test using a smartphone including placing the smartphone into connection with a device, placing the device on a head of a person with the smartphone in a position in which a display of the smartphone is visible to the person, coupling the smartphone to the device and displaying test questions on the display. Cheating is detected by, for example, monitoring presence of the device on the head of the person by periodically obtaining biometric data from the person and analyzing a change in the biometric data relative to previously obtained biometric data for the person, and when a change is present, stopping display of the test questions and generating and transmitting a communication to a test-providing institution derived from the change in biometric data.

Abstract: A method and apparatus for determining gaze direction information, includes a light source for forming illuminating light to an eye region of a user, and optical element(s) configured to guide the illuminating light from the light source to the eye region. The illuminating light is dynamically adjustable to generate a dynamic light beam on the eye region, and a sensor is configured to capture reflected light on the eye region and generate reflection eye data. The apparatus can maintain user profile information, adjust spectral power distribution of the light source based on the user profile information, receive the reflection eye data, and generate the gaze direction information based on the reflection eye data.

Abstract: A fingerprint sensing display apparatus having a plurality of subpixel regions spaced apart by an inter-subpixel region is provided. The fingerprint sensing display apparatus includes a counter substrate; an array substrate facing the counter substrate, wherein the array substrate includes a plurality of light emitting elements configured to emit light toward the counter substrate, at least a portion of the light being totally reflected by a surface of the counter substrate away from the array substrate; a plurality of photosensors on a side of the array substrate away from the counter substrate; and a first light shielding layer and a second light shielding layer between the plurality of photosensors and the plurality of light emitting elements, the second light shielding layer is on a side of the first light shielding layer away from the plurality of light emitting elements.

Abstract: A pixel circuit includes a light emitting element, a first driver transistor, a second driver transistor, and a first compensation capacitor. A first terminal of the first driving transistor is configured to receive a power signal, and a second terminal of the first driving transistor is electrically coupled to the light emitting element. A first terminal of the second driving transistor receives the power signal, and a control terminal of the second driving transistor is electrically coupled to the light emitting element. The first compensation capacitance is electrically coupled to a control terminal of the first driving transistor and the second terminal of the second driving transistor, respectively.

Abstract: An organic light emitting display device includes: a display panel including a plurality of pixel rows each including first pixel groups alternating with second pixel groups; a gate driver configured to provide a first group gate signal to the first pixel groups, and to provide a second group gate signal to the second pixel groups; a data driver configured to output data voltages to a plurality of output line groups; and a connection controller configured to connect the output line groups to a first data line group in response to a first connection control signal, and to connect the output line groups to a second data line group in response to a second connection control signal.

Abstract: An organic light-emitting display panel and a display device are provided. The organic light-emitting display panel includes a control circuit. The control circuit includes a plurality of transistors. The plurality of transistors includes at least one first-type transistor, and each of the at least one first-type transistor has a channel width and a channel length, one of which is greater than five times the other one. Each of the at least one first-type transistor is a single-gate transistor.

Abstract: Embodiments of the present disclosure relate to a display substrate, a method for manufacturing the same, and a display device. The display substrate includes a substrate, a pixel definition layer for defining pixels on the substrate, the pixel definition layer including a plurality of inter-pixel portions located between adjacent pixels, and a fingerprint recognition sensor located in the inter-pixel portions.

Abstract: A wearable display device includes a display element, a first circuit board, a second circuit board, and an outer packaging case housing the display element, the first circuit board, and the second circuit board, wherein the second circuit board has a larger calorific value than the first circuit board, and is disposed at a further outer side, which is an opposite to a wearer than the first circuit board, in the outer packaging case.

Abstract: Embodiments of the present application discloses an under-screen fingerprint identification apparatus, which includes: a micro-lens array, configured to be disposed under the backlight module of the liquid crystal display screen; at least one light shielding layer, disposed under the micro-lens array, wherein the light shielding layer is provided with a plurality of light transmission holes; a photo detecting array, disposed under the light shielding layer; wherein the micro-lens array is configured to converge an optical signal with a specific direction passing through the backlight module to a plurality of light transmission holes, and transmit an optical signal with a non-specific direction passing through the backlight module to a light shielding region of the light shielding layer, wherein the optical signal with the specific direction is transmitted to the photo detecting array through the plurality of light transmission holes.

Abstract: An electronic device includes: a display module; a first adhesive member having a multi-layered structure and having a first adhesive surface attached on a back surface of the display module; and a sensing module including a sensing area, the sensing area being attached on a second adhesive surface facing the first adhesive surface of the first adhesive member.

Abstract: A protective film covers the surface of a cover member in an OLED display with a fingerprint recognition system. The protective film includes a base layer with an in-plane retardation value of 25 nm or less. A hard coat layer may be formed on a surface of the base layer. The surface is a surface farther from the cover member.

Abstract: A portable communication device includes: a foldable housing, a flexible display accommodated in the housing and including a first display area that remains substantially flat in a state in which the housing is folded and a second display area that is bendable as the housing is folded, a support located between the flexible display and the housing and including a first area corresponding to the first display area and having a first flexibility and a second area corresponding to the second display area and having a second flexibility greater than the first flexibility, wherein an opening is formed in the first area, and a sensing module accommodated in the housing and including a light receiving sensor at least partially aligned with the opening to sense light passing through the opening.

Abstract: A display device includes: a substrate including a display region including a plurality of pixel regions, and a non-display region at a periphery of the display region; a pixel circuit layer including a plurality of circuit elements in the display region; a display element layer including a plurality of light emitting devices in the display region on the pixel circuit layer; and first and second alignment lines in the non-display region, the first and second alignment lines each having a multi-layered structure. Each of the first and second alignment lines includes: a main line in a same layer as at least one electrode in the display element layer; and at least one sub-line electrically connected to the main line, the at least one sub-line in a same layer as at least one electrode in the pixel circuit layer.

Abstract: An array substrate, a display screen and a display device. The array substrate includes a base substrate, a non-transparent first OLED substrate, and a transparent second OLED substrate. The first OLED substrate at least partially surrounds the second OLED substrate. The second OLED substrate includes a first electrode layer located on the base substrate, a light emitting structure layer located on the first electrode layer, and a second electrode layer located on the light emitting structure layer. The first electrode layer includes a plurality of first electrodes. The light emitting structure layer includes a plurality of light emitting structures. A number of the first electrodes is less than a number of the light emitting structures. Each of the first electrodes corresponds to one of the light emitting structures.

Abstract: An output voltage regulating circuit includes a PWM IC, a voltage regulating speed control unit, a first n-type switch unit, a first capacitor, a resistor unit, and a voltage output unit, wherein the voltage regulating speed control unit includes a second switch unit, a second capacitor, a current source, and a comparator; when the PWM IC receives a signal to increase or decrease the output voltage, the PWM IC correspondingly controls the voltage output unit to increase or decrease the output voltage, and simultaneously controls the second switch unit to turn on and then cut off such that the voltage at the first terminal of the second capacitor is gradually increased, and before increasing to the reference voltage, the comparator outputs a high voltage level to turn on the first n-type switch unit such that the compensation terminal of the PWM IC is directly connected to the first capacitor.

Abstract: A stretchable display panel has a plurality of first regions and a plurality of second regions alternately arranged. The stretchable display panel includes a plurality of first light emitting elements and a plurality of first driving circuits for driving light emission of the plurality of first light emitting elements; and a plurality of second light emitting elements and a plurality of second driving circuits for driving light emission of the plurality of second light emitting elements. The plurality of first light emitting elements, the plurality of first driving circuits, and the plurality of second driving circuits are limited in the plurality of first regions. The plurality of second light emitting elements are limited is the plurality of second regions. The stretchable display panel in the plurality of first regions have a Young's modulus greater than a Young's modulus in the plurality of second regions of the stretchable display panel.

Abstract: A display substrate, a method for driving the same and a display device are provided. The display substrate includes a first base substrate, at least one vibrator and at least one identification unit. The at least one identification unit is on the first base substrate, the at least one identification unit is in a display area of the display substrate, and the at least one vibrator is on a side of the first base substrate facing away from the identification unit. The at least one vibrator is configured to drive the first base substrate to vibrate to emit an acoustic signal; and the at least one identification unit is configured to receive an ultrasonic signal reflected by an object to be detected, and convert the ultrasonic signal into a first electrical signal.