Xueyou CAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A microfluidic circuit includes a detection capacitor, having a first terminal and a second terminal that are spaced apart from one another to thereby form a space therebetween. The circuit is configured to detect a droplet present in the space by detecting a change of a capacitance value of the detection capacitor caused by a change of a dielectric constant between the first terminal and the second terminal, and to drive a formation of an electrical field formed using at least one of the first terminal and the second terminal of the detection capacitor to thereby drive the droplet to move in the electrical field.
Abstract: 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.
April 30, 2019
Date of Patent:
July 26, 2022
BOE TECHNOLOGY GROUP CO., LTD.
Xiaoliang Ding, Xue Dong, Haisheng Wang, Yingming Liu, Lei Wang, Yangbing Li, Jiabin Wang, Xueyou Cao
Abstract: 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.
Abstract: An imaging backplane, a driving method thereof and a fingerprint identification panel are provided, the imaging backplane includes M rows and N columns of imaging structures, 2M rows of first signal lines, 2N columns of second signal lines, a first reset sub-circuit and a second reset sub-circuit; wherein each imaging structure includes a first imaging unit and a second imaging unit; the first imaging unit of the imaging structure of row i and column j is connected with the first signal line of row 2i-1 and the second signal line of column 2j-1 respectively, and the second imaging unit of the imaging structure of row i and column j is connected with the first signal line of row 2i and the second signal line of column 2j respectively.
May 25, 2020
Date of Patent:
July 19, 2022
BOE Technology Group Co., Ltd.
Xiaoliang Ding, Haisheng Wang, Yingming Liu, Lei Wang, Xueyou Cao, Jiabin Wang, Ping Zhang, Yapeng Li
Abstract: A method for fabricating an array substrate, a display panel, and a display device is provided. The array substrate is divided into a plurality of pixel regions, and each of the pixel regions is provided with a pixel thin film transistor (TFT). At least one of the pixel regions is provided with a pressure component and a force TFT, the force TFT includes a first electrode, a second electrode and a control electrode, and the pressure component is connected to one of the first electrode and the control electrode of the force TFT. At least one of layer structures of the pixel TFT is disposed in the same layer as a corresponding layer structure of the force TFT.
Abstract: A display panel has a light-exit side and a non-light-exit side opposite to the light-exit side. A direction pointing to the non-light-exit side from the light-exit side is a first direction. In the first direction, the display panel includes a coded aperture mask layer and an optical sensing layer. The coded aperture mask layer includes a plurality of first light-transmission portions and a plurality of first light-shielding portions. The coded aperture mask layer is configured to form at least one part of a coded aperture array. The optical sensing layer includes a plurality of optical sensors. The optical sensing layer is configured to receive texture recognition light passed through the coded aperture array and convert optical signals of the texture recognition light into electrical signals. The texture recognition light is light carrying information about a texture to be recognized.
Abstract: An anti-noise signal modulation circuit, a modulation method, a display panel and a display device are disclosed. The anti-noise signal modulation circuit includes a frequency-modulation control sub-circuit. An input end of the frequency modulation control sub-circuit is configured to receive an initial signal, and an output end of the frequency-modulation control sub-circuit is connected to a signal processing circuit that is preset; the frequency-modulation control sub-circuit is configured to frequency-modulate the initial signal by a switch signal that hops according to a preset period, and to output a modulation result to the signal processing circuit; and a frequency corresponding to the switch signal does not overlap with a noise frequency.
Abstract: The present disclosure is related to a light emitting diode. The light emitting diode includes a first transparent electrode layer; a light emitting layer on the first transparent electrode layer; a reflective electrode layer on a surface of the light emitting layer opposite from the first transparent electrode layer, and a second transparent electrode layer. The reflective electrode layer may include transmission hole. The second transparent electrode layer may cover or fill the transmission hole. The transmission hole may be configured to transmit light emitted from the light emitting layer to pass through the second transparent electrode layer.
Abstract: A method for detecting a biometric information includes providing a biometric sensor including a base substrate, a light emitting layer and a touch detection layer on the base substrate, an encapsulating cover on a side of the light emitting layer away from the base substrate, and a photo-sensing layer between the light emitting layer and the base substrate; determining a touch position of a touch by a touch sensing circuit; determining a scanning region based on the touch position; controlling the light emitting layer to form a scanning light source to scan the scanning region in a scanning pattern, the scanning region encompassing the touch position; determining a light intensity distribution of a reflected light reflected by the surface of the biometric sensor in touch with the skin of the user based on signals from the plurality of photosensors; and determining the biometric information based on the light intensity distribution.
Abstract: A microfluidic system and method are disclosed. The microfluidic system includes: a first base substrate; a second base substrate opposite to the first base substrate; a first electrode on a side of the first base substrate close to the second base substrate; and a second electrode on a side of the second base substrate close to the first base substrate, the first base substrate and the second base substrate forms a cell, the cell is configured to receive a liquid to be detected, the first electrode and the second electrode are configured to drive the liquid to be detected during a first time period, and output a capacitance signal between the first electrode and the second electrode during a second time period.
Abstract: Disclosed are a display device and a method for adjusting its display brightness. The display device includes a display screen and an ambient light sensor in the display screen, wherein the ambient light sensor includes a photodeformable element, and the photodeformable element includes a photodeformable material layer; and the photodeformable element is configured to deform in response to a change in ambient light to obtain output of the ambient light sensor. The ambient light sensor has a simple structure and is easy to be made and to be combined with the display screen.
Abstract: A texture image acquisition circuit, a display panel and a texture image acquisition method. The texture image acquisition circuit includes a charge neutralization circuit and a first acquisition circuit, the charge neutralization circuit is electrically connected to the first acquisition circuit, the charge neutralization circuit receives a first control signal to cause a current flowing through the first acquisition circuit to be a first current, and the charge neutralization circuit is configured to receive a second control signal to cause a current flowing through the first acquisition circuit to be a second current, a direction of the second current and a direction of the first current are opposite to each other; the first acquisition circuit is configured to receive light from a texture and accumulate a first signal amount that is acquired after the light from the texture is converted, so as to acquire a first acquisition value.
Abstract: A light detection circuit, an electronic device, and an optical recognition method are provided. The light detection circuit includes a charge storage sub-circuit (10), a photoelectric conversion sub-circuit (30), a signal collection sub-circuit (40), and a potential pull-up sub-circuit (50). When a potential of a reading node (A) is decreased by a preset value, the potential pull-up sub-circuit (50) changes the potential of the reading node (A) to an initial potential. A photoelectric diode may continuously generate a light current under the action of light, so that the potential of the reading node (A) is decreased again. Even when the intensity of ambient light is high, a touch can be accurately recognized in an optical touch recognition circuit, and ridge lines and valley lines can be accurately recognized in an optical fingerprint recognition circuit.
Abstract: The present disclosure provides a touch panel, a fingerprint recognition method thereof, a method for manufacturing a touch panel and a display device. The touch panel includes multiple driving electrode groups and multiple, sensing electrodes which are intersected with and insulated from each other, each of the driving electrode groups comprises a plurality of driving electrodes, each driving electrodes is coupled to a scanning line, and the method includes: a first scanning step of performing a first scanning on each of the driving electrode groups by using scanning lines to detect a sensing signal generated by a sensing electrode being touched; a determining step of determining a driving electrode group being touched according to the detected sensing signal; a second scanning step of sequentially performing a second scanning on the driving electrodes in the determined driving electrode group being touched to obtain a valley or a ridge of a fingerprint.
Abstract: A texture image acquisition method, a texture image acquisition circuit and a display panel are provided. The texture image acquisition circuit includes a photosensitive circuit, the texture image acquisition method includes: allowing the photosensitive circuit to receive light from a texture, and obtaining a first curve based on a signal amount accumulated by the photosensitive circuit within a first integral time period, the first curve being a time-varying curve of a residual signal amount which is a signal amount remaining after a signal amount, left over by the photosensitive circuit before the first integral time period, is released over time; obtaining a first acquisition value based on a signal amount accumulated by the photosensitive circuit within a second integral time period which is after the first integral time period; obtaining a first photosensitive signal of an image of the texture; based on the first curve and the first acquisition value.
Abstract: The present disclosure relates to a gesture recognition apparatus. The gesture recognition apparatus may include a gesture processor and a plurality of depth cameras connecting to the gesture processor. Each of the plurality of the depth cameras may include a controller and a collector. The controller may be configured to generate and transmit an acquisition signal to the collector in response to a trigger signal. The collector may be configured to receive the acquisition signal and perform an image acquisition process in response to the acquisition signal.
Abstract: A piezoresistive detection circuit includes a first transistor, a second transistor, a fixed resistor, and a pressure sensitive resistor, a first end of the fixed resistor is connected with a first voltage signal terminal, and a second end of the fixed resistor is connected with a first node, a first end of the pressure sensitive resistor is connected with the first node, and a second end of the pressure sensitive resistor is grounded, a gate electrode of the first transistor is connected with the first node, a source electrode of the first transistor is connected with a second voltage signal terminal, and a drain electrode of the first transistor is connected with a source electrode of the second transistor, a gate electrode of the second transistor is connected with a scanning signal line, and a drain electrode of the second transistor is connected with a readline.
Abstract: A method for imaging a fingerprint under a screen, including: acquiring a finger pressing area formed by a finger pressing on the screen; determining a first light source and a second light source of the screen based on the finger pressing area, wherein arrangement directions of the first light source and the second light source are not perpendicular to a long axis of the finger pressing area; acquiring a first fingerprint image after the first light source is turned on, and a second fingerprint image after the second light source is turned on; and splicing the first fingerprint image and the second fingerprint image to acquire a target fingerprint image.
Abstract: Provided is a touch circuit including first and second voltage input terminals, a pressure sensing circuit and an output circuit, the first voltage input terminal is configured to input a first voltage signal, the second voltage input terminal is configured to input a second voltage signal, the first voltage signal is different from the second voltage signal, an input terminal of the pressure sensing circuit is coupled to the first voltage input terminal, an output terminal of the pressure sensing circuit is coupled to an input terminal of the output circuit, a control terminal of the output circuit is configured to receive a control signal, and the output circuit is configured to control on/off state between the input terminal of the output circuit and the output terminal of the output circuit according to the control signal. A touch panel, a display panel and a display device are also provided.
Abstract: Provided are a temperature sensor, an array substrate, and a display device. In the temperature sensor, a low-pass filter is disposed between a ring oscillator and a comparator, so that a square-wave signal output from the ring oscillator passes through the low-pass filter and a high-frequency component in the square-wave signal output from the ring oscillator is directly filtered out by the low-pass filter, thereby improving a signal-to-noise ratio of the ring oscillator and a test accuracy of the temperature sensor.