35results about How to "Avoid Brightness Differences" patented technology

In one embodiment of the present invention, a display device is disclosed wherein if a frame luminance is less than a maximum value, the device creates a difference between luminance outputs in the two subframes and sets the luminance difference to a value less than a sub-maximum luminance which is a maximum luminance output in one subframe. With the arrangement, no complete switching of the subframes in which luminance outputs are made occurs at a grayscale level where low luminance replaces high luminance or vice versa. Thus, the grayscale level-luminance curve continues smoothly.

A flat panel display device formed in a pentile structure is provided, which includes a pixel portion and a lighting tester. The pixel portion includes a first pixel column, a second pixel column and a third pixel column. In the first pixel column, first pixels for displaying a first color and second pixels for displaying a second color are alternately arranged in a direction the data lines. In the second pixel column, first and second pixels arranged in reverse order of the first pixel column in a direction parallel to the data lines. In the third pixel column, third pixels for displaying a third color are arranged in a direction parallel to the data lines. The lighting tester applies a first voltage to the first pixel column and applies a second voltage to the second pixel column during a first time period. The lighting tester applies the second voltage to the first pixel column and applies the first voltage to the second pixel column during a second time period.

A pulse width modulation (PWM) dimming control method and a display apparatus having a PWM dimming control function are provided. The method includes setting a PWM period of a group lighting block based on a state of both a first gate line and a last gate line among a plurality of gate lines corresponding to the group lighting block; and controlling PWM dimming of the group lighting block based on the set PWM period. The display apparatus includes a timing controller which determines a pulse width modulation (PWM) period of a group lighting block based on a state of both a first gate line and a last gate line among a plurality of gate lines corresponding to the group lighting block; and a PWM dimming controller which generates a PWM signal for controlling PWM dimming based on the determined PWM period.

The embodiment of the invention discloses the driving method of a display panel and a computer readable storage medium. The display panel comprises a plurality of sub-pixels arranged in an array mode,a plurality of data input ports and multiple groups of data lines. Each group of the multiple groups of data lines comprises a plurality of data lines coupled to the same data input port through a plurality of selection switches. Each data line in the plurality of data lines is coupled to a corresponding column of sub-pixels. The driving method comprises the following steps of scanning a Mth rowof sub-pixels, and according to a first sequence, starting the plurality of selection switches; and scanning a M+1th row of sub-pixels, and according to a second sequence, starting the plurality of selection switches, wherein the M is a positive integer which is greater than or equal to 1, and the first sequence and the second sequence are different. In an existing display panel, the brightness ofthe same color sub-pixels is different due to the different charging of the plurality of the same color sub-pixels, and horizontal and vertical stripes appear on the display panel. In the embodimentof the invention, the above problems are solved.

A data modulation method comprises, comparing left eye image data during a (4N+1)-th frame period with previous frame data, selecting a preliminary modulation value for a left eye image, preliminarily modulating the left eye image data during the (4N+1)-th frame period to reach the preliminary modulation value for the left eye image, and secondarily modulating left eye image data during a (4N+2)-th frame period to reach the preliminary modulation value for the left eye image or a modulation value smaller than the preliminary modulation value.

A thin film transistor panel includes an insulating substrate including a display area and a peripheral area. A plurality of pixels is defined by a plurality of data lines that cross a plurality of gate lines. A pixel electrode is formed in each of the pixels. A plurality of dummy pixels is defined by a dummy data line that crosses the plurality of gate lines. A dummy pixel electrode is formed in each of the dummy pixels, and a thin film transistor including a gate electrode, a source electrode, a drain electrode, and a semiconductor. The thin film transistor display panel reduces or prevents a difference in brightness between pixels caused by a difference of coupling capacitance between the data line adjacent to the peripheral area and the other data lines.

The invention discloses a brightness equalization method and apparatus for a vehicle-mounted surround view system. The method includes the steps of determining, according to magnitudes of brightness changes of historical images taken by a plurality of cameras, a current image taken by one camera as a first reference image; determining a current image captured by a camera located on the opposite side of the camera photographing the first reference image as a second reference image; determining, for an adjacent image located at the same side of the first reference image and the second reference image and taken currently by another camera, a brightness correction value of the adjacent image according to a first brightness difference and a second brightness difference of the adjacent image; and correcting the pixel brightness of the adjacent image according to the determined brightness correction value. The method of the invention can ensure the brightness consistency of a spliced image, make a fusion transition area more natural, and cause no occurrence of an obvious change of brightness to the whole spliced image, thereby facilitating the observation by a user and improving the user experience.

The invention provides an image processing method and device and a computer readable storage medium, which are used for inhibiting the black and white edge phenomenon in a fused image, so that the overall presentation effect of the image is more natural. The method comprises the following steps: respectively carrying out multi-scale decomposition on a visible light image and an infrared image to obtain a multi-scale decomposition result; for each pixel point position, determining whether the pixel point position is in a feature region or not according to the multi-scale decomposition result; if yes, correcting the infrared high-frequency information corresponding to the position of the pixel point according to the multi-scale decomposition result; and after correcting the infrared high-frequency information corresponding to all the pixel positions in the feature region, performing coefficient fusion and multi-scale reconstruction processing on the infrared image and the visible light image to obtain a fused image without a black-white edge phenomenon.

The invention relates to the technical field of display, and provides a pixel driving circuit, a pixel structure and a display panel. The pixel driving circuit comprises a plurality of driving transistors, the first end of each driving transistor is connected with a first power supply end, the second end of each driving transistor is connected with a first node, the control end of each driving transistor is connected with a second node, and the driving transistors are used for inputting a current to the first nodes under the voltage effect of the second nodes. The pixel driving circuit can beapplied to the low-pixel-density area of the display panel, so that the brightness difference between the low-pixel-density area and the high-pixel-density area can be avoided.

A method of displaying a three-dimensional stereoscopic image includes providing a display panel with a data signal including a left-eye data signal and a right-eye data signal, sequentially providing each of a plurality of segment blocks of an active polarized panel with a driving signal including a high level and a low level, where the active polarized panel emits first polarized light in a first polarizing mode of the driving signal based on the data signal, and the active polarized panel emits second polarized light in a second polarizing mode of the driving signal based on the data signal, and selectively providing the display panel with light based on a level changing interval, during which a level of the driving signal is changed.

The invention discloses a display panel and a display device. The display panel comprises a display area and a non-display area surrounding the display area, the display area comprises a first displayarea and a second display area, and the light transmittance of the first display area is larger than that of the second display area; the display panel comprises first pixel units, a plurality of first pixel units are located in a first display area, and each first pixel unit comprises first sub-pixels of at least three colors; a plurality of demultiplexers are located in the non-display area, and each demultiplexer comprises at least two signal output ends with different charging modes; and the first sub-pixels with the same color in each first pixel unit are electrically connected with thesignal output ends with the same charging mode in each demultiplexer. According to the embodiment of the invention, the display quality of the first display area of the display panel can be improved.

The invention discloses a vehicle-mounted laser radar temperature compensation system. The system collects distances measured by a laser radar at different test temperatures, constructs a distance andtemperature change curve relationship, generates a function relationship between compensation time and temperature, obtains the current temperature of the laser radar when the next frame of depth image of the laser radar is exposed, calculates the compensation time corresponding to the current temperature, increases the compensation time for a shutter signal of the laser radar, completes the timedomain compensation of the laser radar, corrects the brightness change of a grey-scale map caused by the change of the laser radar along with the temperature, collects the distances measured by the laser radar at all test temperatures on the basis of the time domain compensation, carries out cubic spline interpolation, generates a spline interpolation table of which the distance changes along with the temperature, and establishes a corresponding relation between the temperature and the compensation distance; the corresponding compensation distance is searched according to the current temperature of the laser radar, and the compensation distance is increased for the next frame of depth image, so that the linear region and the nonlinear region of an electronic device have high distance compensation precision.

A method for modifying color density values in a dot-based printing system uses a control unit. The control unit implements the modification of the color density values after a raster image has been created and modifies the number and / or size of print dots to be applied to a printing substrate in order to attain pre-defined color density target values.

The invention discloses an LED lamp control method, which is applied to the field of LED illumination. The LED lamp control method comprises the following steps: obtaining display data of a current frame and display data of a next frame; calculating display data of a transition frame according to the display data of the current frame and the display data of the next frame; and displaying the display data of the transition frame, wherein the display data of the transition frame is displayed in front of the display data of the next frame. The invention also discloses a LED lamp control device and system and the computer readable storage medium. The average value of the display data of the two adjacent frames is obtained to serve as the display data of the transition frame, so that the LED lamp can be smoother in the display frame changing process, the brightness difference generated between the two adjacent frames in the frame changing process is effectively reduced, the brightness difference is prevented from being captured by human eyes when the display data is in a low-gray-scale data stage, the display effect of the LED lamp is improved, and the user experience is improved.

The invention provides a display panel, a brightness compensation method and a display device. The display panel comprises an array substrate, a light-emitting layer, a plurality of optical film layers and a photoelectric sensor. The light-emitting layer is located on one side of the array substrate, the array substrate is used for driving the light-emitting layer to emit light, the optical film layers are located on the side, away from the array substrate, of the light-emitting layer, and light emitted by the light-emitting layer forms waveguide light on the array substrate and / or the optical film layers. The photoelectric sensor is used for obtaining the waveguide light so as to perform brightness compensation on light emitted by the light-emitting layer according to data of the waveguide light. According to the display panel provided by the invention, the waveguide light formed by the light emitted by the light-emitting layer on the array substrate or the optical film layers can be obtained through the arrangement of the photoelectric sensor so that the brightness compensation can be performed on the light emitted by the corresponding light-emitting layer according to the brightness of the waveguide light, and the brightness uniformity of the display panel is ensured; and the visual experience of the display panel is improved.

A spliced display device includes at least two display panels and a driver device configured to drive the display panels. Each of the display panels includes at least two display areas disposed side by side in a first direction. Any adjacent two of the display areas are configured to be scanned in directions facing each other or facing away from each other. The display device is provided with a maximum brightness area or a minimum brightness area located between the adjacent two of the display panels.

A liquid crystal display includes a first substrate including pixels, a gate line disposed on the first substrate, data lines disposed on the first substrate, a first reference voltage line and a second reference voltage line respectively disposed on the first substrate and applying a first reference voltage and a second reference voltage having different polarities from each other, a pixel electrode disposed in one pixel area and including a first subpixel electrode and a second subpixel electrode, where a first pixel column may overlap the first reference voltage line and the second reference voltage line, a second pixel column adjacent to the first pixel column may not overlap the first reference voltage line and the second reference voltage line, and a first width of the pixel electrode of the first pixel column may be different from a second width of the pixel electrode of the second pixel column.

The present invention provides a curved liquid crystal display panel. In the curved liquid crystal display panel of the present invention, a TFT substrate is provided thereon with a black matrix corresponding to a trunk portion of a pixel electrode such that portions of the sub-pixels within two opposite side zones of the curved liquid crystal display panel that generate dark patterns and portions of the sub-pixels within a central zone of the curved liquid crystal display panel having the same width as that of the dark patterns are shielded, whereby through sacrifice of a portion of aperture ratio, the brightness of the curved liquid crystal display panel is made homogenized through all areas thereof thereby preventing brightness difference between the central zone and two opposite side zones of the curved liquid crystal display panel.

In order to solve the problem that a plurality of single LED lamp strip modules which are connected in series cannot be used, the invention provides a low-power-consumption LED series lamp strip. Thelamp strip is formed by connecting a plurality of lamp strip modules in series, two copper foil strip positive and negative electrodes parallel to the front face of a PCB are correspondingly arrangedon the back face of the PCB of each lamp strip module, and two wires are used for being communicated with the starting end electrodes and the tail end electrodes of the two copper foil strips parallelto the front face respectively, that is, the two copper foil strips parallel to the front face of the PCB are each connected with a wire in parallel. And the current flowing over the two parallel copper foil strips on the front surface of the PCB is shunted. The low-power-consumption LED series lamp strip has the advantages that the power loss on the copper foil of the PCB is greatly reduced, theservice life of the single lamp strip module is prolonged, and the brightness difference of the head lamp bead and the tail lamp bead due to the fact that the single lamp strip module is connected with too many lamp strips is avoided. More single LED lamp strip modules can be connected within the rated power range of the driving power supply, and the lamp strip can be connected as long as 10 meters generally.

The invention discloses a method and a system for controlling multi-signal image window display. The method for controlling is characterized in that different input signal sources are converted into standard digital signals; and the standard digital signals are subjected to brightness and contrast adjustment and are converted into signals with fixed frame rate, the signals with fixed frame rate are subjected to synchronous time sequence configuration, the configured signals with the fixed frame rate is subjected to zoom and reduction processing, and a control system is used for window opening control, window switching and lamination controlling. A plurality of signals are synchronously processed in real time, window layers which have arbitrary sizes and on arbitrary locations in a display screen can be arbitrarily switched and overlapped to display; the luminance difference between signal windows can be solved, and a brightness control module and a signal contrast control module of the signals are additionally arranged on all the signal windows, the uniform display of a plurality of window signal brightness, brightness increasing of a dark field and brightness reducing of a bright field of the same signal source are realized, the contrast of image signals is increased, and a display frame can display normally and clearly.