Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for under-display fingerprint sensor timing control are disclosed. A method includes receiving, by fingerprint sensor control circuitry, an indication to activate a fingerprint sensor that is located under a display panel of a computing device, the fingerprint sensor attached with respect to the display panel such that the fingerprint sensor is exposed to light produced by the display panel and reflected off a finger placed over the display panel at a location of the fingerprint sensor; outputting, for receipt by the fingerprint sensor, a start-sensing trigger signal at a start time synchronized with a display panel timing signal that is provided to the display panel to control emission of the display panel; and outputting, for receipt by the fingerprint sensor, a stop-sensing trigger signal at a stop time synchronized with the display panel timing signal.

Abstract: Examples of wearable systems and methods can use multiple inputs (e.g., gesture, head pose, eye gaze, voice, and/or environmental factors (e.g., location)) to determine a command that should be executed and objects in the three-dimensional (3D) environment that should be operated on. The multiple inputs can also be used by the wearable system to permit a user to interact with text, such as, e.g., composing, selecting, or editing text.

Abstract: Systems and methods are used to dim an emissive display such as an organic light emitting diode (OLED) display. A dimming level setpoint signal is received. At least one dimming process is selected from four dimming processes based on a magnitude of the dimming level setpoint signal. A first dimming process selects a subrange of pixel illumination levels from a range of pixel illumination levels. A second dimming process adjusts a VCOM voltage for the pixel array. A third dimming process selects between rolling shutter and global shutter. A fourth dimming process selectively utilizes one or more subpixels from an emissive display pixel based on the magnitude of the dimming level setpoint signal. The selected dimming process or processes are applied to the emissive display, there by dimming the display. The display can be an OLED display.

Abstract: A method, device, and display device for detecting ambient light are provided. The method includes obtaining brightness information of the ambient light, determining a brightness interval of the ambient light according to the brightness information of the ambient light and preset correspondences between a plurality of ambient light sensors and different brightness intervals, using the ambient light sensor corresponding to the brightness interval of the ambient light as a reference sensor, and outputting a brightness signal of a current ambient light according to output signals of the ambient light sensors and a preset conversion formula.

Abstract: An image display apparatus is disclosed. The image display according to an embodiment of the present disclosure includes a signal processing device including a first logic circuit to process a first voltage range of a voltage level of the input signal, a second logic circuit to process a second voltage range of the voltage level of the input signal, higher than the first voltage range, and a protection control circuit including a protection switch and a protection controller for controlling the protection switch, wherein the protection switch is turned on based on the protection controller being turned off or powered down. Accordingly, a breakdown phenomenon can be reduced in case of power off or power down.

Abstract: A display device includes a display panel including a plurality of pixels, a display panel driver, and a zone compensating circuit which divides the display panel into a plurality of unit blocks, obtains load values of input image data for the unit blocks, and generates corrected image data by correcting the input image data based on the load values. Each of the load values corresponds to one of the unit blocks. The display panel driver generates a data signal for displaying an image on the display panel based on the corrected image data. When grayscale values included in the input image data are the same, a luminance of the image displayed on the display panel is decreased moving away from a center of a reference block having a largest load value among the unit blocks based on the corrected image data.

Abstract: A backlight module includes at least one drive light-emitting group. The drive light-emitting group includes a drive unit provided with plurality of signal transmission channels, a plurality of light-emitting units and a plurality of line groups. The signal transmission channel is connected to the light-emitting unit through the line group. The signal transmission channel, the line group and the light-emitting unit are arranged in one-to-one correspondence. The line group includes a main transmission line and a compensation line arranged in parallel. The compensation lines of the plurality of line groups are connected through a control switch group. When there is an abnormal signal transmission channel, the control switch group is enabled to control a compensation line corresponding to the abnormal signal transmission channel to be conducted with compensation line corresponding to at least one normal signal transmission channel.

Abstract: A gate driver and a display device comprising the same are discussed. The gate driver can comprise a plurality of stages for individually driving a plurality of gate lines by a combination of a plurality of group signals, a plurality of block signals, and a plurality of clock signals. Each of the plurality of stages driven independently can include an output buffer including a pull-up transistor configured to generate and output a gate-on level of a scan signal under the control of a first node, and a pull-down transistor configured to generate and output a gate-off level of the scan signal under the control of a second node. Each stage can further include a first controller configured to control the first node, and a second controller configured to control the second node to be opposite to the operation of the first node.

Abstract: The present disclosure provides a display device, which enables minimization of a transformer circuit and which can be driven using various commercial voltages, and a method for controlling the display device. The display device according to an embodiment comprises: a display; a transformer which transforms commercial power and supplies the transformed commercial power to the display and which includes a plurality of switching devices; and a controller for determining, on the basis of the magnitude of an input voltage input to the transformer, whether or not to open at least one of the plurality of switching devices, and controlling the plurality of switching devices on the basis of an output voltage of the transformer to perform a modulation control of the output voltage to follow a predetermined reference voltage.

Abstract: A display driver and a driving method thereof is disclosed. The display driver includes at least one first latch, at least one second latch, an output buffer, and a comparator. The first latch receives input data. The input terminal of the second latch is coupled to the output terminal of the first latch. The output buffer, including at least one variable current source, is coupled to the second latch. The comparator is coupled to the first latch, the second latch, and the variable current source. The comparator generates at least one control signal of the variable current source.

Abstract: A method, device, and apparatus for determining a brightness compensation parameter. The method includes: obtaining, at any grayscale, a plurality of first acquired brightness values of a plurality of first sub-pixels of a target color in the first display region and a plurality of second acquired brightness values of a plurality of second sub-pixels of the target color in the second display region of the display panel to be compensated; determining whether an acquisition ratio of an average value of the plurality of first acquired brightness values to an average value of the plurality of second acquired brightness values is within a standard range; correcting the plurality of first acquired brightness values or the plurality of second acquired brightness values to obtain a corrected brightness value of the display panel; determining the brightness compensation parameter of the display panel based on the corrected brightness value.

Abstract: A display driver integrated circuit includes a gamma circuit, a control circuit, and an output buffer circuit. The gamma circuit generates a plurality of gamma voltages based on gamma control information, a first gamma power supply voltage and a second gamma power supply voltage. The control circuit calculates a gamma limit value based on panel brightness information, voltage levels of the first and second gamma power supply voltages and the number of the plurality of gamma voltages. The control circuit generates a mode determination signal. The output buffer circuit includes a plurality of buffer circuits. Each of the plurality of buffer circuits includes an input stage and the input stage includes first transistors and second transistors. In a first driving mode, each of the plurality of buffer circuits turns off the first transistors and turns on the second transistors included in the input stage.

Abstract: A driving circuit includes first and second input signal terminals, first and second output signal terminals, constant current sources, first and second transistors having control terminals connected to the first and second input signal terminals, third and fourth transistors each having a control terminal to which a first bias voltage is applied, first and second inductors each having a first inductance, and third and fourth inductors each having a second inductance larger than the first inductance. The driving circuit further includes fifth and sixth transistors each having a control terminal to which a second bias voltage is applied, outflow terminals connected to inflow terminals of the third and fourth transistors via the first and second inductors, and inflow terminals connected to the first and second output signal terminals via the third and fourth inductors.

Abstract: An electronic device includes a camera and a display screen located above the camera. A display output area of the display screen includes a first area corresponding to image collection areas of the camera and a second area not overlapping with the first area. The display screen includes a sharing pixel corresponding to the first area and a shared pixel, the sharing pixel including at least three sub-pixels. Each sub-pixel of the at least three sub-pixels of the sharing pixel is commonly controlled based on a first control signal of a driving sub-circuit in a driving circuit of the shared pixel, and individually controlled based on a second control signal.

Abstract: A display device including: a display panel including first and second data lines, a first and second pixels connected to first and second data lines in first pixel row, third and fourth pixels connected to the second data line in a second pixel row; and a display driver configured to receive image data including first, second, third and fourth pixel data for the first, second, third and fourth pixels, and provide first, second, third and fourth data voltages corresponding to the first, second, third and fourth pixel data to the first, second, third and fourth pixels through the first and second data lines, the display driver further configured to: calculate average data of the first and second pixel data; and selectively perform a charge sharing operation between the first and second data lines according to whether a first increase/decrease condition and a second increase/decrease condition are satisfied.

Abstract: A voltage converter includes a first switching element, a second switching element, and a forced maintaining circuit. The first switching element is configured to operate based on a switching control signal. The second switching element is connected to the first switching element. The second switching element is configured to operate based on the switching control signal in a synchronous mode and operate in a diode mode in an asynchronous mode. The forced maintaining circuit is connected to the second switching element and configured to maintain the asynchronous mode for a forced maintaining period after entering the asynchronous mode.

Abstract: An active pen that is used together with a sensor controller includes: an electrode provided at a pen tip, a memory that stores identification data, and a processor connected to the electrode and the memory. The processor returns, as a response to a first uplink signal transmitted from the sensor controller, a response signal including the identification data stored by the memory, and decides, based on whether data corresponding to the identification data is included in a second uplink signal received after the response signal is transmitted, whether the active pen is detected by the sensor controller.

Abstract: For the first type of display pixel, a display device determines a luminance value assigned from a first frame pixel to the green subpixel, a luminance value assigned from the first frame pixel to each of the two red subpixels to be a value lower than a luminance value for one red subpixel, and a luminance value assigned from the first frame pixel to each of the two blue subpixels to be a value lower than a luminance value for one blue subpixel. For the second type of display pixel, the display device determines a luminance value assigned from a second frame pixel to each of the red subpixel and the blue subpixel, and a luminance value assigned from the second frame pixel to each of the two green subpixels to be a value lower than a luminance value determined for one green subpixel.

Abstract: A method for adjusting the display of a terminal provided with an under-screen image capturing device includes adjusting the brightness of the display above the under-screen image capturing device. First display brightness within a first display region is detected and second display brightness within a second display region is detected when a display screen of a terminal is displaying an image. Grayscale brightness within the first display region is adjusted based on the first display brightness and the second display brightness to allow adjusted grayscale brightness within the first display region to be consistent with grayscale brightness within the second display region.

Abstract: The display device that includes a backlight module and a control circuit is introduced. The control circuit divides an input image to a plurality of blocks, calculates a backlight parameter of each of the blocks, calculates a first duty cycle shift and a second duty cycle shift according to a plurality of duty cycles in the backlight parameter, calculates a first weight value and a second weight value according to a maximum duty cycle, a minimum duty cycle, and a duty cycle mean, and calculates a peaking duty cycle the first duty cycle shift, the second duty cycle shift, the first weight value and the second weight value. The control circuit is further configured to generate an output backlight parameter according to the peaking duty cycle, wherein the corresponding lighting unit of the backlight module is driven according to the output backlight parameter.