The present disclosure provides a fingerprint detecting device, including: a photosensitive sensing component, a first electrode of which is coupled to a reference signal terminal, a second electrode of which is coupled to a pull-down node; a reset component, coupled to a reset terminal and the pull-down node, configured to reset the pull-down node in a first stage; a voltage output component, coupled to the pull-down node, a selection terminal and an output terminal of the fingerprint detecting device, configured to output a voltage signal to the output terminal of the fingerprint detecting device according to the potential of the pull-down node, the first stage to a second stage, an amount of change in a voltage signal output to the output terminal of the fingerprint detecting device is positively correlated with an amount of change in the potential of the pull-down node.

The present disclosure discloses a pixel detecting circuit, a method for driving the same, and a touch display panel. The pixel detecting circuit includes: a plurality of pixel detecting modules arranged in an array; and at least one reading line, wherein each of the reading line is connected to a group of pixel detecting modules, and each group of pixel detecting modules comprises at least two columns of pixel detecting modules; wherein a number of pixel detecting modules included in each group of pixel detecting modules are respectively connected to different control signal terminals, and configured to transmit, under driving of control signals outputted from the different control signal terminals, electrical signals to the connected reading line in any one of a time dividing manner and a frequency dividing manner.

The present disclosure discloses a pixel detecting circuit, a method for driving the same, and a touch display panel. The pixel detecting circuit includes: a plurality of pixel detecting modules arranged in an array; and at least one reading line, wherein each of the reading line is connected to a group of pixel detecting modules, and each group of pixel detecting modules comprises at least two columns of pixel detecting modules; wherein a number of pixel detecting modules included in each group of pixel detecting modules are respectively connected to different control signal terminals, and configured to transmit, under driving of control signals outputted from the different control signal terminals, electrical signals to the connected reading line in any one of a time dividing manner and a frequency dividing manner.

The present disclosure provides a display panel including at least one pixel region located in a display area, each pixel region includes: at least one first pixel including at least one display light-emitting sub-pixel and at least one near-infrared light-emitting sub-pixel, wherein the near-infrared light-emitting sub-pixel is configured to emit near-infrared light; and at least one second pixel including at least one display light-emitting sub-pixel and at least one near-infrared receiving sub-pixel, wherein the near-infrared receiving sub-pixel is configured to receive near-infrared light reflected from an external object and generate a measurement signal responsive to the external object. The present disclosure also provides a display device including the display panel, and a method for determining the position of an external object by the display device.

A display device including a substrate and a plurality of pixels in a display region of the substrate. Each of the pixels includes first and second sub-pixels, and each of the first and second sub-pixels has a light emitting region for emitting light. The first sub-pixel includes a first light emitting element in the light emitting region and configured to emit visible light. The second sub-pixel includes a second light emitting element in the light emitting region and configured to emit infrared light and a light receiving element configured to receive the infrared light emitted from the second light emitting element to detect a user's touch. The second light emitting element and the light receiving element in the second sub-pixel are electrically insulated from and optically coupled to each other to form a photo-coupler.

A display device including a substrate and a plurality of pixels in a display region of the substrate. Each of the pixels includes first and second sub-pixels, and each of the first and second sub-pixels has a light emitting region for emitting light. The first sub-pixel includes a first light emitting element in the light emitting region and configured to emit visible light. The second sub-pixel includes a second light emitting element in the light emitting region and configured to emit infrared light and a light receiving element configured to receive the infrared light emitted from the second light emitting element to detect a user's touch. The second light emitting element and the light receiving element in the second sub-pixel are electrically insulated from and optically coupled to each other to form a photo-coupler.

The present disclosure provides an under-screen fingerprint identification device, a display panel, and a display device. In the present disclosure, light control films are added to pixel opening areas to distinguish fingerprint identification light from normal display light, and image sensors are set to only identify invisible light, so invisible light can be transmitted to the image sensors only through pinholes in a pinhole layer, thereby improving a signal-to-noise ratio of a fingerprint identification signal.

The present disclosure provides an under-screen fingerprint identification device, a display panel, and a display device. In the present disclosure, light control films are added to pixel opening areas to distinguish fingerprint identification light from normal display light, and image sensors are set to only identify invisible light, so invisible light can be transmitted to the image sensors only through pinholes in a pinhole layer, thereby improving a signal-to-noise ratio of a fingerprint identification signal.

The disclosure provides a key structure applied to an electronic device the electronic device includes an OLED screen and an under-screen unit, a through-hole is provided at a preset position of the under-screen unit, and the key structure includes: a light-shielding unit disposed on a side that is of the under-screen unit and facing back from the OLED screen, and fixedly connected to the under-screen unit, the light-shielding unit contains an accommodation space with a notch, and the notch is in communication with the through-hole; a light-emitting unit disposed in the accommodation space; an optical unit disposed in the accommodation space and located between the OLED screen and the light-emitting unit, wherein light emitted by the light-emitting unit forms a preset key pattern on the OLED screen after passing through the optical unit; and a sensing unit located on one side of the light-shielding unit.

A carrier medium is designed as a waveguide on which a coupling region and a decoupling region are provided. The coupling region is designed to couple light, which has been emitted from a light source and reflected on an object in the surroundings, into the carrier medium. The coupled reflected light is then transmitted to the decoupling region by internal reflection, and the reflected light is decoupled again at the decoupling region and is transmitted to the at least one sensor device, which is designed as a time-of-flight camera device. The sensor device provides the detected light in the form of sensor data, describing the propagation time of the light reflected on the object, to an analysis device that obtains object data, which describes the position of the object.