45results about How to "Improve display uniformity" patented technology

The invention discloses a display panel and a display device. The display panel comprises a pixel circuit and a light-emitting element, the pixel circuit comprises a driving module, a data writing module, a compensation module and a reset module. The driving module comprises a driving transistor; the data write-in module is connected to the first electrode of the driving transistor; the compensation module is connected between the grid electrode and the second electrode of the driving transistor; the reset module is connected to the grid electrode or the second electrode of the driving transistor; wherein the working process of the pixel circuit comprises a first bias adjustment stage, and the first bias adjustment stage comprises a first stage; in the first stage, the data write-in module and the reset module are turned off, and the compensation module is turned on. According to the technical scheme, different degrees of bias adjustment can be performed on the driving transistor under different gray scales, so that the display uniformity of the display panel is improved.

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.

The invention provides a display panel, a tiled display device and a preparation method of the tiled display device. The display panel comprises a substrate, a binding terminal, a driving circuit layer and a miniature light-emitting diode device, the binding terminal is arranged on one side of the substrate, the driving circuit layer is arranged on the side, away from the binding terminal, of the substrate and comprises a signal line, and the miniature light-emitting diode device is arranged on the side, away from the substrate, of the driving circuit layer. The substrate is provided with a via hole, and the signal line passes through the via hole and is connected with the binding terminal. According to the display panel, the binding terminal is arranged on one side of the substrate, the signal line penetrates through the via hole to be connected with the binding terminal, the binding position of the display panel is arranged on the back face, the binding terminal does not need to be arranged in the edge area, binding wires do not need to be arranged on the side face, a frame is reduced, and the yield of the display panel is increased; and the signal is directly input from the bottom of the display panel, and the length of the signal line is small, so that the voltage drop is reduced, and the display uniformity is improved.

The invention provides a display panel, a preparation method thereof and a display device. The display panel comprises a substrate and a plurality of sub-pixels. The substrate comprises a bonding pad end and a bonding pad far end which are oppositely arranged. The plurality of sub-pixels are positioned on one side of the substrate; wherein in the direction from the bonding pad end to the far end of the bonding pad, the light emitting efficiency of the sub-pixels is in an increasing trend. In the direction from the bonding pad end to the far end of the bonding pad, the light emitting efficiency of the sub-pixels is in an increasing trend, the problem of light emitting efficiency difference caused by the fact that current is gradually reduced from the bonding pad end to the far end of the bonding pad is compensated, and therefore the display uniformity is improved.

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 embodiment of the invention provides a display substrate and a display. The display substrate comprises a first source-drain metal structure and a channel layer, the first source-drain metal structure comprises a first metal layer, a work function adjusting layer and a second metal layer; wherein the work function of the work function adjusting layer is larger than that of the first metal layer, and the first metal layer and the second metal layer are metal layers made of the same material; the first metal layer is arranged on one side, far away from the substrate, of the channel layer, the work function adjusting layer is arranged on one side, far away from the substrate, of the first metal layer, and the second metal layer is arranged on one side, far away from the substrate, of the work function adjusting layer; the first metal layer is provided with an interval space, and the work function adjustment layer is in contact with one side, away from the substrate, of the channel layer through the interval space; wherein the work function of the channel layer is smaller than that of the work function adjusting layer, and the work function of the channel layer is smaller than that of the first metal layer. And the display uniformity of the display is improved.

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.

The invention discloses a pixel circuit, a driving method thereof and a display panel. The pixel circuit comprises a light emitting module, a driving module, a coupling module, a second voltage transmission unit and a voltage interval unit. The second voltage transmission unit is connected between the first power supply and the first end of the driving module, and the second voltage transmission unit is used for transmitting the voltage of the first power supply to the first end of the driving module in a compensation stage; the first end of the coupling module is connected with the control end of the driving module; the voltage interval unit is connected between the second end of the driving module and the second end of the coupling module, and the voltage interval unit is used for conducting in the compensation stage, so that the first power supply charges the coupling module, and the threshold voltage of the driving module is written into the second end of the coupling module. Through a charging type compensation mode, the discrete type of the threshold voltage of the driving module is compensated, the compensation of the positive bias or the negative bias of the threshold voltage is realized, the display uniformity is improved, and the display effect is improved.

The present invention provides a display panel and a display device, in which a data signal is written into a driving transistor in a sub-pixel through a first signal line during a data writing phase; the first signal line is reused during at least a part of a non-data writing phase, and a power signal is transmitted through the first signal line and a second signal line, thereby indirectly reducing a voltage drop problem when the second signal line transmits a power signal alone, ensuring that the power signals received by each sub-pixel are infinitely consistent, thereby improving the display uniformity of the display panel, and ultimately improving the display effect of the display panel.

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 present application discloses a display panel driving method, a driving circuit and a display panel, wherein the display panel driving method comprises the steps of: monitoring whether the display panel meets a preset refresh condition; if the preset refresh condition is met, driving all pixel electrodes in the display panel to be short-circuited by a refresh driving signal, and disconnecting after a first preset time. Driving all pixel electrodes in the display panel to be short-circuited by a refresh driving signal, and disconnecting after a first preset time, so that all pixel electrodes are at the same potential, and when the pixel electrodes are subsequently charged, the voltage error can be reduced, thereby improving the display uniformity of the display panel.

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 invention discloses a display panel and a display device. The display panel comprises a pixel circuit and a light-emitting element, the pixel circuit comprises a driving module, a data writing module, a compensation module and a reset module. The driving module comprises a driving transistor; the data write-in module is connected to the first electrode of the driving transistor; the compensation module is connected between the grid electrode and the second electrode of the driving transistor; the reset module is connected to the grid electrode or the second electrode of the driving transistor; wherein the working process of the pixel circuit comprises a first bias adjustment stage, and the first bias adjustment stage comprises a first stage; in the first stage, the data write-in module and the reset module are turned off, and the compensation module is turned on. According to the technical scheme, different degrees of bias adjustment can be performed on the driving transistor under different gray scales, so that the display uniformity of the display panel is improved.

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 embodiment of the present application provides a dimming glass device and a preparation method thereof. The dimming glass device includes: a connecting component, a first dimming unit and a second dimming unit, wherein the first dimming unit is located at one end of the connecting component, including a stacked first substrate, a first dimming module and a second substrate; the first dimming module includes a first liquid crystal layer, and the second substrate is close to the connecting component; the second dimming unit is located at the other end of the connecting component, including a stacked second dimming module and a third substrate; the second dimming module includes a second liquid crystal layer, and the second dimming module is close to the connecting component; the connecting component connects the first dimming unit and the second dimming unit; the orientation of the first liquid crystal layer and the second liquid crystal layer has an angle. The embodiment of the present application reduces the number of adhesive layers used and reduces the influence of the adhesive layer on the uniformity of the thickness of the dimming module.

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.

The invention discloses a pixel circuit, a driving method thereof and a display panel. The pixel circuit comprises a driving module, a light-emitting module, a light-emitting control module and a threshold compensation module, the light-emitting module, the light-emitting control module and the driving module are sequentially connected between the first power supply and the second power supply; the threshold compensation module is connected between the first control end of the driving module and the first end of the driving module, the second control end of the driving module is connected with adjusting voltage so as to adjust the threshold voltage of the driving module, and the threshold compensation module is used for compensating the adjusted threshold voltage of the driving module. According to the technical scheme, the display effect of the display panel is improved.