31results about How to "Improve display uniformity" patented technology

According to the display panel and the display device, the display panel comprises a first shading part and a second shading part which are located on the side, away from a pixel layer, of a packaging layer, and the first shading part is not overlapped with a first type of sub-pixels and is close to the first side of the first type of sub-pixels; the second shading part is not overlapped with the first type of sub-pixels and is close to the second side of the first type of sub-pixels. According to the display panel, the emergent angle a of emergent light which can be shielded by the first shading part is set to be larger than or equal to theta1 and smaller than or equal to theta2, and the emergent angle a of emergent light which can be shielded by the second shading part is set to be larger than or equal to theta3 and smaller than or equal to theta4, so that the brightness of small-angle light which is emitted towards the first side and the second side of the display panel is symmetrical; and the brightness of the light rays in the wide-angle range emitted by the first type of sub-pixels is still kept in a normal attenuation ratio, so that the display uniformity and the peep-proof performance of the display panel are improved, the risk of a'dark and light screen phenomenon 'is reduced, and the visual effect of watching the display panel is improved.

The application discloses an array substrate and a liquid crystal display panel, and belongs to the technical field of display. The array substrate has a plurality of sub-pixel regions. The array substrate comprises a substrate, and a sub-pixel, a first insulating layer, a common electrode and a first supporting column located on one side of the substrate. The sub-pixel comprises a transistor and a pixel electrode, and the first insulating layer is located between the transistor and the pixel electrode in a direction perpendicular to the substrate. In the same sub-pixel region, the first insulating layer comprises a first via, and the pixel electrode is overlapped with a first electrode of the transistor through the first via. One first supporting column corresponds to two first vias adjacent in a first direction. For the corresponding first supporting column and two first vias, the first supporting column has a part extending into the two first vias, and in the first direction, the maximum width of the first supporting column located in the first via is less than the maximum width of the first via. In this way, the uniform distribution of the guide liquid can be ensured, and the display uniformity is improved.

The application discloses a kind of zero visual seam's liquid crystal display unit, it is related to display technical field.The display unit includes backlight module, liquid crystal panel assembly and optical compensation composite cover plate.Wherein, the edge of backlight module is equipped with the chamfer support surface that is inwards shrinkage, the non-display area of liquid crystal panel assembly is bent or adhered along the chamfer support surface, so that the physical height of non-display area is lower than the plane where effective display area is located.Optical compensation composite cover plate is adhered to the surface of liquid crystal panel assembly and extends to cover above non-display area, and the cover plate sequentially includes light remodeling layer, waveguide light uniform layer and wide-angle scattering layer from bottom to top.The application is cooperated by mechanical structure and micro-nano optics, realizes the visual screening of physical seam under the premise of not increasing electronic control complexity, solves the problems of large assembly thickness, black seam ghost and edge image distortion in traditional seam elimination scheme.

The invention discloses a display device, and belongs to the technical field of display, the display device comprises a display panel, a pixel array in the display panel comprises a plurality of pixel groups, and each pixel group comprises at least one pixel row; in a display frame period, different pixel groups receive different compensation bias voltages; the compensation bias voltage is used for compensating the bias voltage of the pixels in the pixel group; the compensation bias voltage is determined based on flicker characteristic data of the display panel; the flicker characteristic data of the display panel at least comprises the optimal bias voltage value corresponding to each pixel group. According to the display device, different and customized bias voltage compensation can be carried out on different areas in the display panel according to actual physical characteristic differences of the different areas of the display panel, so that the hysteresis characteristics of driving transistors in all the areas of the display panel under the low refresh rate can be well adjusted, and the display effect is improved. And the non-uniform flicker of the display panel caused by the regional characteristic difference under the low refresh rate is effectively eliminated.

This application discloses a display panel and a display device, belonging to the field of display technology. The display panel includes: a substrate; scan lines extending along a first direction and spaced apart on the substrate; data lines extending along a second direction and spaced apart on the substrate, the scan lines and data lines intersecting on different layers to form sub-pixel areas; common electrode traces extending along the second direction and spaced apart on the substrate in the first direction; the projections of the common electrode traces and data lines on the substrate at least partially overlap; and bridging traces configured to bridge two adjacent common electrode traces in the second direction; the display device includes the above-described display panel. This application reduces the lateral space occupied by the common electrode traces in the pixel aperture area, improves the pixel aperture ratio and light transmittance, increases display brightness, reduces device operating power consumption, and can improve display uniformity and reduce vertical bright and dark stripes.

A display substrate and a display device. The display substrate comprises a plurality of array distributed sub-pixels, a pixel driving circuit of a plurality of sub-pixels forms M pixel rows and N pixel columns; the display substrate further comprises a first initialization signal line and a second initialization signal line extending along a first direction; the pixel driving circuit comprises a plurality of transistors and a light emitting device, the plurality of transistors comprising a driving transistor; the light emitting device comprises a first electrode; wherein the first initialization signal line is respectively electrically connected with the mth row of sub-pixels, and is configured to transmit a first initialization signal to the control electrode of the mth row of pixel driving transistors; the second initialization signal line is respectively electrically connected with the m-1th row of sub-pixels, and is configured to transmit a second initialization signal to the first electrode of the light emitting device of the m-1th row of sub-pixels, m is a positive integer greater than or equal to 1 and less than or equal to M; the first initialization signal is different from the second initialization signal.

The application discloses a driving and biasing circuit of a pixel array, the pixel array is divided into M*N same square sub-arrays, each pixel in each sub-array is provided with a driving branch, the driving branch comprises a current mirror PMOS tube MP0 and a switch PMOS tube MP1, the gate of the current mirror PMOS tube MP0 is connected with a bias voltage VBP, the gate of the switch PMOS tube MP1 is connected with a switch SW signal output by a data latch and switch control circuit, and the drain of the switch PMOS tube MP1 is connected with a pixel; the biasing branch comprises a first-stage current mirror array and a second-stage current mirror array connected, the first-stage current mirror array is used for copying a reference current IREF into M*N parts and outputting an IBIAS current; one second-stage current mirror array is arranged in each sub-array and is used for receiving the IBIAS current and outputting a bias voltage VBP, and the bias voltage VBP is connected with the driving branch in each sub-array.

This application discloses a display panel and a display device. The display panel includes a pixel driving circuit and a light-emitting element. The pixel driving circuit includes a first driving transistor and a second driving transistor. The first driving transistor is coupled between a first power line and a first electrode of the light-emitting element, and the second driving transistor is coupled between the first power line and the first electrode of the light-emitting element. The subthreshold swing of the first driving transistor is greater than that of the second driving transistor. In a first brightness mode, the first driving transistor connects the first power line and the first electrode of the light-emitting element. In a second brightness mode, the second driving transistor connects the first power line and the first electrode of the light-emitting element. The brightness of the light-emitting element in the first brightness mode is greater than that in the second brightness mode. This application can accommodate the different display requirements of the display panel under high and low brightness conditions, thereby improving the display uniformity of the display panel under high and low brightness conditions.

The invention discloses a display device, and belongs to the technical field of display, and the display device comprises a display panel and a low dropout regulator. A pixel array in the display panel comprises a plurality of pixel groups, and each pixel group comprises at least one pixel row. The low dropout voltage stabilizer is connected with one pixel group and is used for performing voltage amplitude compensation on the received gate driving signal of the pixel group and outputting the compensated gate driving signal to the pixel group so as to perform scanning driving on pixels in the pixel group; the compensated gate driving signal and the gate driving signal have the same frequency, phase and duty ratio. According to the display device provided by the invention, the voltage amplitude attenuation of the gate driving signal in the long-distance transmission process can be effectively compensated, so that the pixels at different positions can receive sufficient effective driving voltage; and non-uniform display brightness and abnormal display of the display panel caused by insufficient charging of partial pixels or unstable switching state are avoided.

The application relates to an LED display screen display non-uniformity adjusting method and system based on image processing, which comprises the following steps: converting the obtained real-time multi-source physical state parameters into a two-dimensional pixel-level feature map through spatial interpolation mapping; obtaining a transient environmental deviation matrix, combining a cumulative lighting duration map to obtain a long-acting aging deviation matrix; weighting and fusing the two to obtain an overall deviation matrix, and generating a target update instruction set according to the comparison result of the regional gray variance of the overall deviation matrix and a preset gradient threshold; in response to the instruction set, superimposing a preset static reference correction matrix and the overall deviation matrix to generate a preliminary dynamic correction matrix, and performing boundary smoothing processing on the preliminary dynamic correction matrix through a spatial edge-preserving filtering algorithm to obtain an adaptive target correction coefficient matrix; finally, mapping and converting a video source data frame and the matrix point by point into an actual driving signal rendering output. The application can improve the accuracy of LED display screen display non-uniformity adjustment.

The utility model relates to a kind of optical waveguide with double-sided coupling-out structure. Including: waveguide substrate, coupling-in unit, first coupling-out unit and second coupling-out unit, coupling-in unit and first coupling-out unit are located in the first surface of waveguide substrate, second coupling-out unit is set in the second surface of waveguide substrate opposite to first coupling-out unit, and second coupling-out unit is high-reflection-efficiency diffraction structure.Coupling-in unit is configured to couple image light into the waveguide substrate, part of the image light is diffracted by the first coupling-out unit, and the remaining light is reflected by the second coupling-out unit when it reaches the second coupling-out unit.

The application discloses an array substrate and a display panel. The array substrate comprises a substrate and a driving circuit layer on the substrate, wherein the driving circuit layer is provided with a pixel circuit and a light-emitting control signal line, the pixel circuit comprises a driving transistor, a first initialization transistor and a first connecting part, the first connecting part is connected between the first electrode of the driving transistor and the first initialization transistor, the first connecting part and the light-emitting control signal line have an overlapping part in the orthographic projection on the substrate, the orthographic projection of a shielding part provided in the driving circuit layer on the substrate overlaps with the overlapping part, the film layer where the shielding part is located is between the film layer where the light-emitting control signal line is located and the film layer where the first connecting part is located, and / or at least one organic insulating layer is arranged between the film layer where the first connecting part is located and the film layer where the light-emitting control signal line is located, and / or the thickness of the insulating layer between the two is greater than 3 microns. The technical scheme of the application improves the display uniformity of the display panel.

The invention relates to an array substrate and a preparation method thereof, and a display panel. The array substrate comprises a first transistor and a substrate; the buffer layer is positioned on one side of the substrate; the first metal layer is located on the side, away from the substrate, of the buffer layer, the first metal layer comprises a first grid electrode of the first transistor, the first grid electrode comprises a first surface, a convex body extending in the direction away from the substrate is formed on the first surface, the convex body has a first orthographic projection on the substrate, and the first surface located outside the convex body has a second orthographic projection on the substrate; the active layer is located on the side, away from the substrate, of the first metal layer, the active layer comprises an active structure, the active structure comprises a channel region, at least part of the channel region and at least part of the first grid electrode are oppositely arranged, and the orthographic projection of the first part of the active structure on the substrate at least partially covers the first orthographic projection; and a second metal layer comprising a first pole of the first transistor, the first pole of the first transistor comprising a second surface facing the substrate, the second surface being in contact with the second portion.

This application discloses a display panel and an electronic device. The display panel includes a substrate and light-emitting devices. The light-emitting devices of the display panel include a first light-emitting device and a second light-emitting device with two different emitting colors. Since the luminous efficiency of a single light-emitting unit in the first light-emitting device is lower than that of a single light-emitting unit in the second light-emitting device, this application improves the overall luminous efficiency of the first light-emitting device by including at least two light-emitting units stacked and connected in series, thereby reducing the power consumption of the first light-emitting device. Furthermore, the number of light-emitting units in the second light-emitting device is less than that in the first light-emitting device to reduce the difference in luminous efficiency between the two devices. This avoids excessively low driving current for the second light-emitting device at low grayscale levels, thereby improving the display uniformity of the display panel at low grayscale levels.

The embodiment of the invention provides a display panel and a display device. The display panel comprises a pixel circuit and a power supply voltage line, and the power supply voltage line is used for transmitting driving power supply voltage. The display panel further includes a first sub-supply voltage line extending in a first direction and a second sub-supply voltage line extending in a second direction. The first sub-power voltage line is prepared on the first metal layer, and the second sub-power voltage line is prepared on the second metal layer. The display panel further comprises a third sub power supply voltage line extending in the first direction, and the third sub power supply voltage line is prepared on the third metal layer. The third sub power supply voltage line can be added into a network of the first sub power supply voltage line and the second sub power supply voltage line, so that the network density of the power supply voltage lines is further improved, the routing impedance of the power supply voltage lines is further reduced, and the difference between driving power supply voltages output from different positions of the power supply voltage lines is reduced.

The application discloses a display panel and a display device. The display panel comprises a display area; a first middle line, the width of the display panel in a first direction is D, the first middle line extends along a second direction, the distance between the first middle line and the first edge of the display panel in the first direction is d1, d1=D / 4, at least one gate drive circuit is arranged on both sides of the first middle line in the first direction; the first direction and the second direction intersect; and the gate drive circuit is located in the display area. According to the embodiment of the application, frameless display can be realized, and display uniformity can be improved.

The application provides a display screen and a display device, and relates to the technical field of display. The display screen comprises a display module, a first electrode layer, an insulating boss, an electrochromic layer and a second electrode layer. The display module comprises a pixel layer and a first packaging layer, the pixel layer comprises pixel units, and the first packaging layer covers the pixel layer; the first electrode layer is arranged on the side of the first packaging layer away from the pixel layer in a laminated manner, the first electrode layer comprises a middle region and an edge region surrounding the middle region, the orthographic projection of the pixel unit on the first electrode layer is located in the middle region; the insulating boss is protruded on the surface of the side of the middle region away from the display module, a plurality of insulating bosses correspond to a plurality of pixel units one by one; the electrochromic layer covers the insulating boss, the region of the middle region not occupied by the insulating boss and the edge region; and the second electrode layer is arranged on the side of the electrochromic layer away from the display module in a laminated manner. The display screen of the application has a good anti-peeping effect and does not need to be replaced frequently.

The application belongs to the technical field of display driving, and particularly relates to a gate driving circuit and a display panel. The gate driving circuit comprises N cascaded gate driving modules, and the N cascaded gate driving modules are divided into multiple driving areas in physical layout. A pre-charging unit of a first-stage gate driving module of each driving area is connected with at least one pre-charging trigger signal source. The pre-charging unit of a non-first-stage gate driving module of the same driving area is connected with a stage transmission output end of an upper-stage gate driving module. Therefore, the first-stage module of each driving area obtains sufficient pre-charging charges through an independent pre-charging trigger signal source, so as to output a stage transmission signal with good waveform, restore a high-quality stage transmission chain in the area, and effectively improve the problem of insufficient pre-charging of a driving control node caused by the deterioration of the stage transmission signal.

The utility model relates to the technical field of micro-displays, in particular to an OLED (Organic Light Emitting Diode) display structure, which comprises a light combination prism, the light combination prism comprises a light-in surface and a light-out surface; the light incident surface is connected with a single-color silicon-based OLED (Organic Light Emitting Diode) display; the light emitting surface is connected with a micro lens assembly; the micro-lens assembly is arranged on the light emitting surface of the light combining prism, the micro-lens assembly rotates the light path through the micro-lens array and increases the light extraction efficiency, so that the brightness of the OLED display is improved, the power consumption is reduced, and the structure can increase the direction of light reflected in the panel by adjusting the light path, so that the front brightness is improved, and the side brightness is reduced.

A display substrate, a display panel and a display device. The display substrate comprises a display area, at least part of the area being a transparent display area. The display substrate comprises a plurality of pixels in the transparent display area. The pixel comprises a plurality of sub-pixels, and each sub-pixel comprises an organic light emitting element (220) and a pixel circuit (221). The organic light emitting element (220) comprises a first electrode, a second electrode and an organic light emitting material between the first electrode and the second electrode. The first electrode of the sub-pixel is electrically connected to the pixel circuit (221). The number of the first electrodes is greater than the number of the second electrodes. The display substrate further comprises a first power supply signal line (VDD1) connected to the pixel circuit (221) and a second power supply signal line (VSS) connected to the second electrode. The first power supply signal line (VDD1) comprises a first sub-power supply signal line (VDD11) extending in a first direction and a second sub-power supply signal line (VDD12) extending in a second direction; and / or, the second power supply signal line (VSS) comprises a third sub-power supply signal line (VSS1) extending in the first direction and a fourth sub-power supply signal line (VSS2) extending in the second direction.

This application belongs to the field of display technology and relates to a display panel, including a substrate and a pixel defining unit disposed on one side of the substrate. The pixel defining unit has multiple pixel openings, and a first electrode and a functional layer are sequentially stacked within each pixel opening. It also includes a second electrode; the second electrode located in the non-display area has several holes. This application also relates to a method for manufacturing a display panel and a display device. This application can improve the display uniformity of the display panel.

This invention relates to the field of liquid crystal display technology, and more particularly to an intelligent driving method and system for liquid crystal displays. The method includes the following steps: recording the current decay waveform of the source driver charging the pixel capacitor during pixel charging; calculating the charging time constant based on the current decay waveform; calculating the current pixel capacitance value using the charging time constant and the transistor on-resistance; converting the current pixel capacitance value into an orientation angle corresponding to the pixel orientation state; comparing the current orientation angle with the target orientation angle corresponding to the pre-acquired target grayscale, and calculating the orientation angle deviation; and using a driving sequence containing multiple voltage pulses based on the orientation angle deviation. This invention achieves closed-loop precise driving based on pixel state feedback by deriving the pixel capacitance from the current decay and converting it into the pixel orientation state, overcoming the problem of long-term open-loop blind driving in liquid crystal displays.

The utility model discloses a PMOLED packaging structure and a display device, and belongs to the technical field of display. The PMOLED packaging structure comprises a substrate, a packaging cover, two isolation pieces, packaging glue and a PMOLED light-emitting layer. The substrate is provided with a first press-fit area, the packaging cover is provided with a second press-fit area, and the first press-fit area and the second press-fit area are correspondingly arranged; the two separators are arranged between the first press-fit area and the second press-fit area, the separators are made of negative photoresist, the cross section of each separator is trapezoidal, the large end face of each separator faces the second press-fit area, and the small end face of each separator faces the first press-fit area; the packaging glue is arranged between the two separators and is used for bonding the first pressing area and the second pressing area, so that the substrate and the packaging cover form an accommodating space; and the PMOLED light-emitting layer is arranged in the accommodating space, so that the problem of glue overflow when the substrate and the packaging cover are hermetically connected through packaging glue is solved.

This invention proposes a display driving circuit and a display panel. The display driving circuit includes a gate start signal access module and a gate driving module. The gate start signal access module includes multiple pre-charge units and multiple switching units. By setting the switching units to control the start terminal of the gate driving module to be grounded when the clock signal is valid, the gate driving module is avoided from being affected by both the clock signal and the gate start signal simultaneously, reducing the occurrence of leakage problems. At the same time, since each gate driving module avoids leakage problems caused by the superposition of the clock signal and the gate start signal, the difference in charging rate caused by inconsistent pre-charging conditions between the gate driving modules is avoided, thus improving the uniformity of the display.

This application discloses a display panel, a display device, and a compensation method for the display panel, relating to the field of display technology. The display panel includes sub-pixels, each sub-pixel comprising a light-emitting element and a pixel circuit. The pixel circuit includes a signal acquisition module. The light-emitting element is electrically connected between a first power line and a second power line. The signal acquisition module has a first end electrically connected to a data signal line and a second end electrically connected to the second electrode of the light-emitting element. The signal acquisition module is used to conduct under the control of a first scan signal on a first scan signal line and to acquire actual electrical signals through the data signal line. According to embodiments of this application, the signal acquisition module can acquire actual electrical signals, which is beneficial for improving the display uniformity of the display panel.

The application discloses a display panel correction method and device, the method comprises the following steps: obtaining the brightness data of each area of the display panel; according to the brightness data of the target splicing area in each area, the brightness of the to-be-spliced area spliced with the target splicing area is corrected, and the brightness data of the to-be-spliced area is corrected to the corrected brightness data according to the ratio of the edge brightness data of the target splicing area and the to-be-spliced area. The method can significantly reduce the brightness unevenness between each area, the splicing line problem is significantly improved, the overall display uniformity of the display panel is improved, the spliced picture looks more smooth and uniform, especially the brightness uniformity and display effect of the large-size OLED display device are significantly improved, the user experience is improved, and the method has high practicability and market prospect.

The invention relates to an array substrate and a preparation method thereof, and a display panel. The array substrate comprises a substrate; the spacing layer is located on one side of the substrate, the spacing layer comprises a first surface deviating from the substrate, at least one groove sunken towards the substrate is formed in the first surface, and the groove has a first orthographic projection on the substrate; the first metal layer is located on the first surface and comprises a first grid electrode of a first transistor; the active layer is insulated from the first metal layer and located on the side, away from the substrate, of the first metal layer, the active layer comprises an active structure, the active structure comprises a channel region, at least part of the channel region and at least part of the first grid electrode are oppositely arranged, and the active structure comprises a first part and a second part; the orthographic projection of the first part on the substrate at least partially covers the first orthographic projection; the second metal layer is located on the side, away from the substrate, of the active layer, the second metal layer comprises a first electrode of the first transistor, the first electrode of the first transistor comprises a second surface facing the substrate, and the second surface makes contact with the second part.

The invention relates to the technical field of Micro OLEDs, and discloses a display panel and a display device.The display panel comprises a substrate, a first insulating layer, a second insulating layer and a third insulating layer, the first insulating layer, the second insulating layer and the third insulating layer are sequentially arranged on one side of the substrate, the substrate comprises a pixel circuit area, and the pixel circuit area comprises a driving transistor, a first bypass transistor and a first capacitor; the source electrode of the driving transistor is electrically connected with the drain electrode of the first bypass transistor to form a first electric connection point; two ends of the first capacitor are electrically connected with the grid electrode and the source electrode of the driving transistor respectively; the first insulating layer is provided with a first metal via hole led out from a first electric connection point; the second insulating layer is provided with a first metal structure electrically connected with the first metal via hole; the third insulating layer is provided with a lower electrode plate of the first capacitor, the orthographic projection of the lower electrode plate of the first capacitor on the substrate is not larger than the orthographic projection of the first metal structure on the substrate, and the lower electrode plate of the first capacitor and the first metal structure form a derivative capacitor connected with the first capacitor in parallel.

The present disclosure provides a pixel compensation circuit and a driving method thereof, and a display panel. The pixel driving circuit comprises a driving module, a voltage writing module, a coupling module and a threshold compensation module. The threshold compensation module is configured to compensate the threshold voltage of the driving module in a threshold compensation stage. The first end of the coupling module is connected with the voltage writing module, and the second end of the coupling module is connected with the control end of the driving module. The voltage writing module is configured to output a fixed voltage to the first end of the coupling module in an initialization stage, and output a data voltage to the first end of the coupling module in a data writing stage. The coupling module is configured to couple the voltage containing the data voltage information to the control end of the driving module in the data writing stage. The start time of the data writing stage is later than the end time of the threshold compensation stage. The present disclosure separates the data writing and compensation, and the compensation time is not limited by the data writing time, so that high-frequency driving can be realized, and the display uniformity is improved.

This application provides a display device and its driving method. The display device includes a display panel. The display panel includes a plurality of pixel units. Each pixel unit includes a first sub-pixel and at least one second sub-pixel. The first sub-pixel includes a first driving circuit and a first light-emitting diode. The first driving circuit includes a first pulse amplitude modulation control module, a first transistor, and a second transistor. The second sub-pixel includes a second driving circuit and a second light-emitting diode. The second driving circuit includes a second pulse amplitude modulation control module, a second pulse width modulation control module, a third transistor, and a fourth transistor. The technical solution of this application reduces the number of data signal lines, lowers the complexity of the driving circuit, improves color point stability and brightness uniformity, reduces transient current peaks, and improves the reliability of the display device.