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 touch readout circuit, a touch display panel and a display device are disclosed, the touch readout circuit includes a first gating circuit, configured to control a first current signal at a first electrode of the light-emitting component; a current mirror circuit, configured to provide the first current signal and a second current signal to a signal processing circuit, a current direction of the second current signal being opposite to a current direction of the first current signal; and a signal processing circuit, configured to: receive the first current signal, the second current signal and a touch scan signal, filter the second current signal to obtain a third current signal, provide a touch readout signal to an output end of the touch readout circuit according to the third current signal, the first current signal and the touch scan signal.
March 22, 2018
Date of Patent:
July 21, 2020
BOE TECHNOLOGY GROUP CO., LTD.
Xiaoliang Ding, Haisheng Wang, Chun Wei Wu, Yingming Liu, Shengji Yang, Pengcheng Lu, Pengpeng Wang, Xueyou Cao, Wei Liu
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: A fingerprint identification substrate and a fabrication method thereof, a display panel and a display apparatus are provided. The fingerprint identification substrate includes a base substrate and a plurality of fingerprint identification units on the base substrate. Each fingerprint identification unit includes a photosensitive sense electrode and a thin film transistor which are positioned on the base substrate, the photosensitive sense electrode is positioned between the base substrate and the thin film transistor, and the photosensitive sense electrode is electrically connected with a source electrode or a drain electrode of the thin film transistor.
Abstract: A touch substrate includes a common electrode, a piezoelectric material layer and a touch electrode sequentially disposed on the substrate. The touch electrode includes a plurality of touch driving electrodes and a plurality of touch sensing electrodes, which cross with each other and are insulated from one another. The touch driving electrode includes a plurality of first touch sub-electrodes that are electrically connected. An overlapping area of front projections of the common electrode and each of the first touch control sub-electrodes on the substrate is smaller than an area of a pattern enclosed by a peripheral boundary of the first touch sub-electrodes.
Abstract: Embodiments of the present disclosure provide a method and a device for providing haptic feedback in a virtual reality system. The method includes acquiring state information of one or more virtual objects in a virtual scene presented in the virtual reality system and/or one or more real objects in an external environment of a user using the virtual reality system; generating haptic feedback information according to the state information; and providing haptic feedback to the user according to the haptic feedback information.
Abstract: The present application proposes a circuit and method for detecting ambient light, and a display panel. The circuit for detecting ambient light includes a light sensing sub-circuit configured to output a voltage pulse signal related to present intensity of the ambient light; and a detection sub-circuit electrically connected to the light sensing sub-circuit, and configured to acquire a frequency of the voltage pulse signal, and obtain the present intensity of the ambient light according to the frequency of the voltage pulse signal.
Abstract: A touch panel, an electronic device, and a driving method thereof are provided. The touch panel includes: a substrate and a tactile feedback layer, a touch detection circuit and a plurality of driving electrodes located on the substrate. The tactile feedback layer is configured to adjust hardness thereof under control of the driving electrode, the touch detection circuit is configured to provide a plurality of touch detection points, each of the touch detection points corresponding to at least one of the driving electrodes.
Abstract: The present disclosure discloses a fingerprint identification component, a fingerprint identification method and a fingerprint identification device. the fingerprint identification component includes an ultrasonic wave transmission circuit and an ultrasonic wave reception circuit, the ultrasonic wave transmission circuit is configured to transmit an ultrasonic wave in a direction towards a fingerprint at an interval of a first time period in a detection phase; the ultrasonic wave reception circuit is configured to, in the detection phase, receive an ultrasonic wave reflected by the fingerprint, convert the ultrasonic wave into an electric signal, and output the electric signal to a signal reading line, in order for an external detection component to determine texture information of the fingerprint according to the electric signal in the signal reading line.
Abstract: A display driving unit circuit, a driving method, a display driving circuit and a display device are provided. The display driving unit circuit includes a pixel driving circuit and a light-emission control signal generation circuit. The light-emission control signal generation circuit is coupled to the pixel driving circuit. The pixel driving circuit is to drive a pixel to emit light. The light-emission control signal generation circuit is to supply a display light-emission control signal to the pixel driving circuit at a display stage to enable the pixel in a displaying mode and supply a fingerprint detection light-emission control signal to the pixel driving circuit at a fingerprint detection stage to enable the pixel in a fingerprint detection light-emission mode at the fingerprint detection stage. The display stage and the fingerprint detection stage are different time periods.
Abstract: The present disclosure provides a display apparatus and a method for implementing a touch feedback. The display apparatus comprises: a display unit configured to display an image; a control unit configured to determine a touched object in the image according to a touch position of a user, and provide voltage signals based on attribute information of the touched object; and a touch unit configured to generate an induced capacitance and an electrostatic force at the touch position based on the voltage signals from the control unit. The display apparatus according to the present disclosure can improve the user experiences in using a terminal device comprising the display apparatus.
Abstract: The present disclosure relates to a display panel, a device and a method for controlling the same. The display panel includes: a substrate; a detecting light transmitter, a detecting light receiver, a first optical element and a second optical element which are disposed on the substrate. The first optical element is configured to diverge light emitted from the detecting light transmitter and the second optical element is configured to converge the reflected divergent light to the detecting light receiver.
Abstract: An ultrasonic generator includes a substrate, a lower electrode on the substrate, an upper electrode on the lower electrode, and an ultrasonic generation unit between the lower electrode and the upper electrode. The ultrasonic generation unit includes a vibration chamber and an ultrasonic generation layer on the vibration chamber. The ultrasonic generation layer is configured to propel a surrounding medium to vibrate to generate ultrasonic waves in response to a voltage difference between the upper electrode and the lower electrode.
Abstract: An optical signal noise reduction circuit, an optical signal noise reduction method and a display panel are provided in the present disclosure. The optical signal noise reduction circuit includes a reference line, a comparison detection circuitry and a photoelectric signal read line. An electric signal on the photoelectric signal read line includes a noise electric signal and a photoelectric signal. The reference line is configured to sense the noise electric signal on the photoelectric signal read line, to generate a corresponding second electric signal. The comparison detection circuitry is connected to the reference line and the photoelectric signal read line, and configured to acquire the photoelectric signal in accordance with the electric signal on the photoelectric signal read line and the electric signal on the reference line.
Abstract: A droplet control and detection device and an operating method thereof are provided. The droplet control and detection device includes: a light source; a first electrode; a second electrode; a droplet arranged on a light-exiting side of the light source, where the droplet is movable under the effect of an electric field formed between the first electrode and the second electrode; a photoelectric detection structure configured to detect light emitted by the light source and reflected by the droplet; and a processing circuit configured to obtain droplet information according to a detection result of the photoelectric detection structure and control an electrical signal applied on the first electrode and the second electrode according to the droplet information.
Abstract: Embodiments of the present disclosure provide a method and a device for acquiring depth information, as well as a gesture recognition apparatus. The method includes: projecting an infrared spectrum to a target object; collecting the infrared spectrum reflected by the target object at different positions and generating a first infrared image and a second infrared image respectively; and processing the first infrared image and the second infrared image on a basis of infrared spectrum response characteristics to acquire the depth information of the target object.
Abstract: Embodiments of the present disclosure provides a light sensor, including: a first thin film transistor, having a first terminal connected to a first node, a second terminal receiving a first level signal, and a control terminal receiving a first control signal; a second thin film transistor, having a first terminal connected to the first node, a second terminal receiving a second level signal, and a control terminal receiving a second control signal; a voltage follower, having an input terminal connected to the first node, and an output terminal; the third thin film transistor, having a first terminal connected to the output terminal of the voltage follower, a second terminal connected to an input terminal of an output unit, and a control terminal receiving a third control signal; and the output unit, having an input terminal connected to the second terminal of the third thin film transistor, and an output terminal connected to an output terminal of the light sensor.
Abstract: The present disclosure discloses a pressure detection circuit, a pressure detection circuit array, a touch panel, and a detection method. The pressure detection circuit comprises: a collection sub-circuit configured to receive an external pressure signal and convert the external pressure signal into a voltage signal under the control of a gating signal; and a reading sub-circuit configured to receive the voltage signal, and output a detection output signal related to the voltage signal, wherein the collection sub-circuit and the reading sub-circuit are powered by a constant current source respectively.
Abstract: A fingerprint detection circuit is provided, which includes a photosensitive unit, a voltage following transistor, a first switching transistor and a second switching transistor. A gate electrode of the first switching transistor is connected to a first resetting control end, a first electrode thereof is connected to a node, and a second electrode thereof is connected to a second electrode of the voltage following transistor. A gate electrode of the second switching transistor is connected to a scanning signal end, a first electrode thereof is connected to the second electrode of the voltage following transistor, and a second electrode thereof is connected to a first reference voltage end. A gate electrode of the voltage following transistor is connected to the node. A first electrode of the photosensitive unit is connected to a third reference voltage end, and a second electrode thereof is connected to the node.
Abstract: The light detecting device provided by the present disclosure includes a reset circuit, a photoelectric conversion circuit, a voltage follower circuit, a selection circuit, and a light fluctuation detecting circuit. The light fluctuation detecting circuit is connected to each of a light fluctuation detection control terminal, a photoelectric node and an input terminal of the voltage follower circuit. The light fluctuation detecting circuit is configured to enable or disable a connection between the photoelectric node and the input terminal of the voltage follower circuit. When the light fluctuation detecting circuit is turned off, a drain current of the light fluctuation detecting circuit may change as the brightness of light received by the light fluctuation detecting circuit changes. The voltage at the output node is used to determining brightness of light received by the photoelectric conversion circuit and whether is a fluctuation in the in the brightness of the light.
Abstract: A pressure sensing assembly integrated with a fingerprint identification function includes a pressure sensing unit and a control unit. The pressure sensing unit includes a plurality of pressure sensing sub-units arranged in N rows and M columns, a pressure sensing processing sub-unit, and a fingerprint identification processing sub-unit, where N and M are each a positive integer. A pressure sensing sub-unit in an nth row and an mth column includes a pressure sensing module in the nth row and the mth column and a fingerprint identification module in the nth row and the mth column. The pressure sensing processing sub-unit and the fingerprint identification module in the nth row and the mth column are connected to the control unit, where n is a positive integer smaller than or equal to N, and m is a positive integer smaller than or equal to M.