CHIPONE TECHNOLOGY (BEIJING) CO., LTD.

A drive circuit, a display drive chip, a display apparatus, and an electronic apparatus are provided. The drive circuit includes a first stage circuit, a second stage circuit and an auxiliary circuit. The first stage circuit is configured to receive and amplify a first input signal and a second input signal to acquire a first output signal and a second output signal and output the first output signal and the second output signal to the second stage circuit. The second stage circuit is configured to output a third output signal based on the first output signal and the second output signal to drive a load. The second stage circuit is further connected to the first stage circuit via a Miller capacitor. The auxiliary circuit is connected to the first stage circuit and the second stage circuit for reducing an output impedance of the first stage circuit.

The present disclosure relates to an electronic apparatus, a display panel, and an electronic device. The apparatus comprises: a photoelectric sensing module comprising a plurality of sensing units, the sensing units being used for converting optical signals into electrical signals, and the photoelectric sensing module being used for acquiring brightness information during fingerprint recognition; and a power management module electrically connected to the photoelectric sensing module and used for, when the state of the photoelectric sensing module satisfies a preset condition, charging a battery by using the electrical signals output by the plurality of sensing units. According to embodiments of the present disclosure, when the state of the photoelectric sensing module satisfies the preset condition, the apparatus can use the electric signals output by the plurality of sensing units to charge the battery, thereby prolonging the battery life.

The present disclosure discloses a color temperature adjustment method, a color temperature adjustment device, and a display apparatus. The method includes: acquiring an initial color temperature value and a target color temperature value; performing color temperature adjustment according to the initial color temperature value, the target color temperature value, and a pre-fitted color temperature curve, wherein a fitting method for obtaining the color temperature curve includes: defining at least three reference color temperature points to partition a plurality of color temperature ranges; selecting a plurality of intermediate color temperature points within each color temperature range according to a predetermined algorithm, thereby dividing each color temperature range into a plurality of color temperature sub-ranges; fitting the color temperature curve in accordance with the color temperature parameters of the selected intermediate color temperature points and the at least three reference color temperature points being defined. The present disclosure allows for the setting of flexible color temperature ranges and smooth transitions along the color temperature curve without flickering, without the need for high frame rates, and with wide applicability.

Disclosed is a method, a system, a device, an apparatus and a medium for driving an LED display screen. When the total grayscale value of an LED lamp bead is greater than a grayscale threshold value, the sub-grayscale value of the LED lamp bead is determined based on a total grayscale value of the LED lamp bead, a total number of sub-frames and a grayscale growth sequence number of each sub-frame image, otherwise, the sub-grayscale value of the LED lamp bead is determined according to the total grayscale value of the LED lamp bead, the grayscale non-dispersion threshold value and the grayscale growth sequence number of each sub-frame image; according to the sub-grayscale value of each LED lamp bead in each sub-frame image, the LED display screen is driven to display each sub-frame image, so that the grayscale value can be uniformly dispersed, and image display quality is improved.

The present disclosure relates to a device and a method for display panel fragment detection, an electronic apparatus, and a chip. The device comprises at least one light source, at least one photosensitive element, and a computing unit, wherein the light source and the photosensitive element are arranged on opposite edges of a display panel; the at least one photosensitive element is configured to receive an optical signal emitted by the at least one light source and detect an intensity of at least one optical signal; and the computing unit is configured to compare the intensity of the at least one optical signal with a preset signal intensity threshold to determine a first optical signal having an intensity lower than the preset signal intensity threshold, and determine a fragment position based on an optical path corresponding to the first optical signal.

Disclosed is a method, a system, a device, an apparatus and a medium for driving an LED display screen. When the total grayscale value of an LED lamp bead is greater than a grayscale threshold value, the sub-grayscale value of the LED lamp bead is determined based on a total grayscale value of the LED lamp bead, a total number of sub-frames and a grayscale growth sequence number of each sub-frame image, otherwise, the sub-grayscale value of the LED lamp bead is determined according to the total grayscale value of the LED lamp bead, the grayscale non-dispersion threshold value and the grayscale growth sequence number of each sub-frame image; according to the sub-grayscale value of each LED lamp bead in each sub-frame image, the LED display screen is driven to display each sub-frame image, so that the grayscale value can be uniformly dispersed, and image display quality is improved.

Disclosed in an embodiment of the present application is an LED driver circuit and an LED display apparatus. The LED driver circuit comprises: a first component area, which comprises a first driving channel group and a second driving channel group that are arranged symmetrically and comprise a same number of driving channels, respectively; and a second component area, which is provided with an analog ground pad connected to a substrate of the driving channels through a metal wire. According to the present application, chip internal noise can be effectively reduced, and accuracy of matching output currents of the driving channels can be improved to obtain good current consistency, thereby being beneficial to guarantee display effect of a LED display screen.

This application describes example voltage regulating apparatuses, chips, power supplies, and electronic devices. In one example, an apparatus includes: a voltage input interface ( 10 ), which is used to receive an input voltage; a current determination component ( 20 ), which is electrically connected to the voltage input interface ( 10 ) and is used for determining a regulating current according to the input voltage and the amount of change between the input voltage and an adjacent input voltage of a previous moment; a controller ( 30 ), which is electrically connected to the current determination component ( 20 ) and is used to output a control signal according to the regulating current; and a voltage output interface ( 40 ), which is electrically connected to the voltage input interface ( 10 ), the current determination component ( 20 ) and the controller ( 30 ) and is used to output a target voltage according to the control signal and the input voltage.

The present disclosure relates to a power supply circuit, a chip, and a display screen. The power supply circuit includes a reference circuit and a current mirror circuit. The current mirror circuit mirrors a reference current provided by the reference circuit into a plurality of output currents. The current mirror circuit includes an input branch and a plurality of output branches, both of which receive the same gate driving signal to generate the plurality of output currents. A buffer is used to isolate the plurality of output branches from the input branch and improve the stability of the power supply circuit even when the current ratios of the plurality of output branches are dynamically changed.

The present disclosure relates to a touch detection device and method, and an electronic apparatus. The touch detection device comprises: a charge amplification circuit connected to a sensing point of a touch panel and configured to receive an excitation signal and charges of the sensing point, amplify the charges of the sensing point, and output a capacitance change signal of the sensing point; and a capacitance compensation circuit connected to the sensing point of the touch panel and configured to inject compensation charges into the sensing point in a process during which a level of the excitation signal changes, wherein a polarity of the compensation charges is related to a direction of the level of the excitation signal changing. The embodiment of the present disclosure may compensate for or even eliminate the influence caused by the parasitic capacitance of the touch panel, improve the accuracy of touch detection, and save the circuit area.