Display panel and display device

Abstract

The application relates to a display panel and a display device, the display panel has a display area and a non-display area located at the periphery of the display area, the display panel comprises a substrate and a plurality of pixels, the plurality of pixels are arranged on the substrate, the plurality of pixels comprise a plurality of display pixels located in the display area and a plurality of virtual pixels located in the non-display area, and at least three kinds of display pixels with different colors are arranged in the display area; wherein in the plurality of virtual pixels, at least part of the single virtual pixel area is greater than the single display pixel area; the non-display area comprises four sub-areas corresponding to the four sides of the display area, the colors of the plurality of virtual pixels in the same sub-area are the same, and the color of the virtual pixel is the same as the color of one of the display pixels; in this way, the number of virtual pixels arranged in the non-display area can be reduced, the narrow frame of the display panel can be realized on the basis of ensuring the uniformity of the display pixel film formation, and the printing process of the virtual pixel can be simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display devices, in particular to a display panel and a display device. BACKGROUND

[0002] Ink-Jet Printing OLED (IJP OLED) is a new type of display technology, which has physical advantages that cannot be matched by LCD technology. In the preparation of light-emitting devices by inkjet printing, in order to ensure the film uniformity of the display area and the uniformity of the brightness of the light-emitting device, a virtual pixel is arranged in the non-display area (Dummy area) outside the display area in addition to printing the light-emitting material in the display area. Due to the characteristics of the ink and the drying uniformity of the VCD equipment, the light-emitting material in the Dummy area will have a non-uniform film thickness. In order to avoid the occurrence of Mura (non-uniformity of brightness or color) in the four corners and edges of the display panel, a large number of virtual pixels are usually arranged in the Dummy area. Although the virtual pixels in the Dummy area do not emit light, they are also configured with at least three colors and have the same arrangement rule as the display pixels, which makes the printing process of the virtual pixels complex. SUMMARY

[0003] The embodiments of the present application provide a display panel and a display device, which can reduce the number of virtual pixels arranged in the non-display area, and on the basis of realizing the narrow frame of the display panel, can simplify the printing process of the virtual pixels.

[0004] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a display panel is provided, the display panel has a display area and a non-display area located at the periphery of the display area, and the display panel comprises:

[0005] a substrate; and

[0006] a plurality of pixels arranged on the substrate, the plurality of pixels comprising a plurality of display pixels located in the display area and a plurality of virtual pixels located in the non-display area, and the display area is configured with at least three display pixels of different colors;

[0007] Among the plurality of virtual pixels, at least part of the single virtual pixel area is greater than the single display pixel area.

[0008] The non-display area comprises four sub-areas corresponding to the four sides of the display area, the colors of the plurality of virtual pixels in the same sub-area are the same, and the color of the virtual pixel is the same as the color of one of the display pixels.

[0009] In an embodiment, the four partitions include a first partition, a second partition, a third partition and a fourth partition, the first partition and the third partition are arranged on two sides of the display area in a first direction, and the second partition and the fourth partition are arranged on two sides of the display area in a second direction.

[0010] In the four partitions, the virtual pixels in at least two of the partitions have the same color.

[0011] In an embodiment, the virtual pixels in the first partition and the virtual pixels in the second partition have the same color, the virtual pixels in the third partition and the virtual pixels in the fourth partition have the same color, and the virtual pixels in the first partition and the virtual pixels in the second partition have different colors.

[0012] In an embodiment, the display pixels form multiple rows in the first direction, the display pixels in each row are arranged along the second direction, the display pixels in each row have the same color, and the colors of the display pixels in adjacent rows are different.

[0013] The virtual pixels in the first partition have the same color as the display pixels in an adjacent row.

[0014] The virtual pixels in the third partition have the same color as the display pixels in an adjacent row.

[0015] In an embodiment, the virtual pixels in the first partition and the virtual pixels in the third partition have the same color, the virtual pixels in the second partition and the virtual pixels in the fourth partition have the same color, and the virtual pixels in the first partition and the virtual pixels in the second partition have different colors.

[0016] In an embodiment, the virtual pixels in the four partitions have the same color.

[0017] In an embodiment, the display pixels are configured as red sub-pixels, green sub-pixels and blue sub-pixels.

[0018] The virtual pixels in the same partition are configured as green virtual pixels or blue virtual pixels.

[0019] In an embodiment, the virtual pixels in the four partitions have the same color and are all configured as blue virtual pixels.

[0020] In an embodiment, the display panel further includes a light-emitting material layer, the light-emitting material layer is arranged on the substrate to form a light-emitting layer of the multiple pixels.

[0021] The maximum film forming height difference of the light emitting layer of the virtual pixel is greater than the maximum film forming height difference of the light emitting layer of the display pixel.

[0022] According to a second aspect of the present application, a display device is provided, comprising the display panel described above.

[0023] In the display panel of the embodiments of the present application, a plurality of pixels are arranged on the substrate, the plurality of pixels include a plurality of display pixels located in a display area and a plurality of virtual pixels located in a non-display area, the film forming uniformity of the light emitting material of the display pixels is improved by arranging the virtual pixels; meanwhile, in the plurality of virtual pixels, at least part of the single virtual pixel area is greater than the single display pixel area, so that the ink amount of the single virtual pixel is greater than the ink amount of the display pixel, thereby reducing the ink drying speed of the non-display area in the periphery and reducing the thickness difference of the ink film layer between the non-display area and the display area; in this way, the number of virtual pixels arranged in the non-display area can be reduced, the narrow frame of the display panel can be realized on the basis of ensuring the film forming uniformity of the display pixels; and the colors of the plurality of virtual pixels in the same partition are the same, that is, one ink printing is performed on the same partition, which can simplify the printing process of the virtual pixels compared with the existing printing of at least three colors of ink.

[0024] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0026] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0027] Figure 1 A schematic view of the sub-pixel arrangement of the display panel provided by the prior art is shown in FIG. 1.

[0028] Figure 2 A plan view of the display panel provided by the embodiments of the present application is shown in FIG. 2.

[0029] Figure 3 A first pixel arrangement view of the display panel provided by the embodiments of the present application is shown in FIG. 3.

[0030] Figure 4 A second pixel arrangement view of the display panel provided by the embodiments of the present application is shown in FIG. 4.

[0031] Figure 5 A third pixel arrangement of a display panel provided by an embodiment of the present application;

[0032] Figure 6 A fourth pixel arrangement of a display panel provided by an embodiment of the present application;

[0033] Figure 7 A film layer diagram of a display panel provided by an embodiment of the present application;

[0034] Figure 8 A third pixel arrangement of a display panel provided by an embodiment of the present application; Figure 2 An enlarged schematic view of part A in FIG. 8. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0036] IJP OLED (full name in English: Ink-Jet Printing OLED, full name in Chinese: Inkjet printing organic light emitting diode) is a new display technology, which has physical advantages that cannot be compared with LCD technology, has the characteristics of active light emitting, real color, infinite contrast, zero delay, transparent display, flexible display, free display form, etc., and is the next generation display technology that can replace liquid crystal display technology. Since IJP OLED device is a full solid, non-vacuum device, it has the characteristics of anti-shock, low temperature resistance (-40℃), etc., so the application range is very wide.

[0037] After inkjet printing ink in the opening, drying is needed to evaporate the solvent in the opening to form a film layer. During the solvent evaporation process, the closer to the center of the display area, the thicker the solvent atmosphere volatilized by the ink, and the ink is not easy to dry; the closer to the edge of the display area, the thinner the solvent atmosphere volatilized by the ink, and the ink is easier to dry; thus, there is a significant difference in the drying speed of the ink at the center and edge positions of the display area, thereby making the ink film thickness at the center and edge positions of the display area uneven.

[0038] In order to ensure the film forming uniformity of the display area AA and the uniformity of the luminous device brightness, please refer to Figure 1In the non-display area NA' outside the display area AA', dummy pixels 22' are printed by using the same light-emitting material. Due to the difference in ink drying between the periphery and the center of the display panel 100', after the dummy pixels 22' are printed in the periphery, the film layer with uneven thickness will be in the non-display area NA'. In order to ensure that the light-emitting material with uneven thickness is entirely in the non-display area NA', more dummy pixels 22' need to be arranged in the non-display area NA', so that the display pixels 21' in the display area AA' are as far as possible in the central area, and the film uniformity of the display area AA' is further ensured. Since the dummy pixels 22' in the dummy area are not light-emitting, a large number of dummy pixels 22' are not conducive to the narrow frame design of the display panel 100'. Moreover, although the dummy pixels 22' in the non-display area NA' are not light-emitting, the dummy pixels 22' are also provided with at least three colors and have the same arrangement rule as the display pixels 21', so that the printing process of the dummy pixels 22' is complicated.

[0039] Embodiments of the present application provide a display panel 100 and a display device. The following are described in detail respectively. It should be noted that the order of description of the following embodiments is not limited as the preferred order of the embodiments.

[0040] In a first aspect, embodiments of the present application provide a display panel 100. The display panel 100 can be at least one of an organic light-emitting diode display panel and a quantum dot display panel. In an exemplary embodiment, the display panel 100 is an organic light-emitting diode display panel.

[0041] The display panel 100 includes a substrate 1. In some embodiments, the substrate 1 can include at least one of a flexible substrate and a rigid substrate. The flexible substrate can include an organic substrate. The rigid substrate can include a glass substrate.

[0042] The substrate 1 has a display area AA and a non-display area NA located outside the display area AA. The part of the display panel 100 corresponding to the display area AA can emit light to realize display. The part of the display panel 100 corresponding to the non-display area NA cannot emit light.

[0043] The display panel 100 further includes a plurality of pixels 2 arranged on the substrate 1. The plurality of pixels 2 includes a plurality of display pixels 21 located in the display area AA.

[0044] In some embodiments, referring to Figures 2 to 5 The plurality of display pixels 21 includes a plurality of display pixel rows arranged at intervals along a first direction F1. One display pixel row includes at least two display pixels 21 arranged at intervals along a second direction F2 and emitting light of the same color.

[0045] Specifically, the plurality of display pixel rows include a first display pixel row, a second display pixel row, and a third display pixel row. Adjacent rows of the first display pixel row, the second display pixel row, and the third display pixel row are arranged repeatedly along a first direction F1 as a repeating unit. The first display pixel row includes first display pixels, the second display pixel row includes second display pixels, and the third display pixel row includes third display pixels. The first display pixels, the second display pixels, and the third display pixels respectively emit light of three different colors, such as red light, blue light, and green light.

[0046] In some embodiments, the shape of the display pixel 21 is selected from at least one of a circle, an ellipse, and a polygon. The polygon includes at least one of a square, a diamond, a pentagon, a hexagon, and an octagon. In an exemplary embodiment, the shape of the display pixel 21 is a rectangle.

[0047] In some embodiments, the second direction F2 intersects the first direction F1. In an exemplary embodiment, the first direction F1 is perpendicular to the second direction F2, but is not limited thereto. The included angle between the first direction F1 and the second direction F2 can also be an acute angle or an obtuse angle.

[0048] In some embodiments, referring to Figure 2 , the first direction F1 is a length direction of the display panel 100, and the second direction F2 is a width direction of the display panel 100. The length of the display panel 100 can be greater than or equal to the width of the display panel 100. In other embodiments, the first direction F1 can be a width direction of the display panel 100, and the second direction F2 can be a length direction of the display panel 100.

[0049] Referring to Figure 2 and Figure 3 , the plurality of pixels 2 further include a plurality of virtual pixels 22 located in the non-display area NA. The virtual pixels 22 are provided to improve the film uniformity of the light-emitting material of the display pixels 21.

[0050] Meanwhile, among the plurality of virtual pixels 22, at least part of the individual virtual pixels 22 has an area greater than that of the individual display pixels 21. For example, the non-display area NA includes four sub-areas corresponding to the four sides of the display area AA. On one side of the display area AA in the first direction F1, the sub-area of the non-display area NA at this position extends in the second direction F2. Part of the individual virtual pixels 22 in this sub-area has an area greater than that of the individual display pixels 21. As a result, the ink amount of the part of the individual virtual pixels 22 is greater than that of the individual display pixels 21.

[0051] Thus, when the ink is dried, the solvent atmosphere concentration of the non-display area NA in the periphery can be increased, so that the solvent atmosphere concentration of the non-display area NA approaches that of the display area AA; thus, the ink drying speed of the non-display area NA in the periphery is reduced, so that the ink drying speed of the non-display area NA approaches that of the display area AA, and the difference in ink film thickness between the non-display area NA and the display area AA is reduced; thus, the number of virtual pixels 22 in the non-display area NA can be reduced, and the display panel 100 can be narrow-framed on the basis of ensuring the uniformity of the display pixels 21.

[0052] In addition, the colors of the plurality of virtual pixels 22 in the same sub-area are the same, and the color of the virtual pixel 22 is the same as that of one of the display pixels 21; that is, one ink printing is performed for one sub-area, and compared with the prior printing of at least three colors of ink, the printing process of the virtual pixels 22 in the non-display area NA can be simplified.

[0053] The size of the virtual pixel 22 is not limited in the present application. In some embodiments, in each sub-area, the area of the single virtual pixel 22 closest to the display area AA is the same as that of the display pixel 21, and the areas of the remaining virtual pixels 22 are all greater than that of the display pixel 21. Please refer to Figures 3 to 5 In another embodiment, the area of the single virtual pixel 22 in each sub-area is greater than that of the single display pixel 21. In addition, the areas of the plurality of virtual pixels 22 in each sub-area are the same.

[0054] The shape of the virtual pixel 22 is not limited in the present application. The shape of the virtual pixel 22 can be the same as that of the display pixel 21, or can be different from that of the display pixel 21. In some embodiments, the shape of the virtual pixel 22 is the same as that of the display pixel 21, and both are rectangular.

[0055] The four sub-areas include a first sub-area NA1, a second sub-area NA2, a third sub-area NA3, and a fourth sub-area NA4. The first sub-area NA1 and the third sub-area NA3 are arranged on the two sides of the display area AA in the first direction F1, and the second sub-area NA2 and the fourth sub-area NA4 are arranged on the two sides of the display area AA in the second direction F2.

[0056] According to the above-mentioned "the area of a single virtual pixel 22 is greater than the area of a single display pixel 21", the area of the virtual pixel 22 is not specifically limited in the present application, and the area of the virtual pixel 22 can be adjusted according to actual conditions, so as to adjust the film forming speed of the virtual pixel 22. In an embodiment, the area of the display pixel 21 is set as S1; the area of the virtual pixel 22 is set as S2, wherein S2>3S1.

[0057] In some embodiments, referring to Figures 3 to 6 In the case where the shape of the virtual pixel 22 is the same as the shape of the display pixel 21, the virtual pixel 22 is arranged along the second direction F2 in the first sub-area NA1 and the third sub-area NA3, and the width W1 of the virtual pixel 22 in the second direction F2 is greater than the width W2 of the display pixel 21 in the second direction F2. In this way, the space in the second direction F2 is fully utilized, and while the area of the virtual pixel 22 is increased, the size of the virtual pixel 22 in the first direction F1 or the number of virtual pixels 22 arranged in the first direction F1 can be reduced in the first sub-area NA1 and the third sub-area NA3, so as to reduce the frame width of the display panel 100 in the first direction F1.

[0058] Optionally, the number of virtual pixels 22 arranged in the first direction F1 in the first sub-area NA1 and the third sub-area NA3 is greater than or equal to 1 and less than or equal to 6. In this way, the number of virtual pixels 22 in the first sub-area NA1 and the third sub-area NA3 is appropriate, and on the basis of ensuring the uniformity of film forming of the display pixel 21, the size of the first sub-area NA1 and the third sub-area NA3 in the first direction F1 can be reduced.

[0059] In an exemplary embodiment, the number of virtual pixels 22 arranged in the first direction F1 in the first sub-area NA1 and the third sub-area NA3 is set to three rows.

[0060] In addition, the virtual pixels 22 are arranged along the first direction F1 in the second sub-area NA2 and the fourth sub-area NA4, and the width W3 of the virtual pixels 22 in the first direction F1 in the second sub-area NA2 and the fourth sub-area NA4 is greater than the width W1 of the virtual pixels 22 in the second direction F2 in the first sub-area NA1 and the third sub-area NA3. In this way, the space in the first direction F1 is fully utilized, and while the area of the virtual pixel 22 is increased, the size of the virtual pixel 22 in the second direction F2 or the number of virtual pixels 22 arranged in the second direction F2 can be reduced in the second sub-area NA2 and the fourth sub-area NA4, so as to reduce the frame width of the display panel 100 in the second direction F2.

[0061] Optionally, the number of the virtual pixels 22 arranged in the second direction F2 in the second sub-area NA2 and the fourth sub-area NA4 is greater than or equal to 1 and less than or equal to 6. In this way, the number of the virtual pixels 22 in the second sub-area NA2 and the fourth sub-area NA4 is appropriate, which can reduce the size of the second sub-area NA2 and the fourth sub-area NA4 along the second direction F2 on the basis of ensuring the uniformity of the display pixels 21 film formation.

[0062] In an exemplary embodiment, the number of the virtual pixels 22 arranged in the second direction F2 in the second sub-area NA2 and the fourth sub-area NA4 is set to two rows.

[0063] The size of the virtual pixels is not specifically limited in the present application.

[0064] In some embodiments, the ratio of the width W1 of the virtual pixels 22 in the second direction F2 to the width W2 of the display pixels 21 in the second direction F2 in the first sub-area NA1 and the third sub-area NA3 is set to 3-20. The ratio can be any value between 3-20, for example, 3, 5, 8, 10, 12, 15 or 20.

[0065] In some embodiments, the ratio of the width W3 of the virtual pixels 22 in the first direction F1 to the width W2 of the display pixels 21 in the second direction F2 in the second sub-area NA1 and the fourth sub-area NA3 is set to 3-20. The ratio can be any value between 3-20, for example, 3, 5, 8, 10, 12, 15 or 20.

[0066] In some embodiments, referring to Figure 6 In the first sub-area NA1 and the third sub-area NA3, a plurality of rows of the virtual pixels 22 are arranged in the first direction F1, and the width of the plurality of rows of the virtual pixels 22 in the direction away from the display area AA is set to increase; that is, in the plurality of rows of the virtual pixels 22, the closer to the periphery, the greater the width of the virtual pixels 22, that is, the closer to the periphery, the greater the area of the virtual pixels 22, thereby reducing the ink drying speed of the virtual pixels 22 at the periphery, making the ink drying speed of the display panel 100 everywhere close to uniform, and further ensuring the uniformity of the film formation of each pixel on the display panel 100.

[0067] The color of the virtual pixels 22 in the four sub-areas is not specifically limited in the present application. The colors of the virtual pixels 22 in at least two of the four sub-areas are the same.

[0068] In some embodiments, referring toFigure 3 The virtual pixels 22 in the first sub-area NA1 and the virtual pixels 22 in the second sub-area NA2 are of the same color, the virtual pixels 22 in the third sub-area NA3 and the virtual pixels 22 in the fourth sub-area NA4 are of the same color, and the virtual pixels 22 in the first sub-area NA1 and the virtual pixels 22 in the third sub-area NA3 are of different colors. That is, among the four sub-areas, two adjacent sub-areas are of the same color, and the other two adjacent sub-areas are of the same color.

[0069] In one exemplary embodiment, referring to Figure 3 The display pixels 21 form multiple rows in the first direction F1, and the display pixels 21 in each row are arranged in the second direction F2. The display pixels 21 in each row are of the same color, and the display pixels 21 in adjacent rows are of different colors. The virtual pixels 22 in the first sub-area NA1 are of the same color as the display pixels 21 in an adjacent row. The virtual pixels 22 in the third sub-area NA3 are of the same color as the display pixels 21 in an adjacent row.

[0070] That is, the virtual pixels 22 in the first sub-area NA1 are of the same color as the display pixels 21 in an adjacent row, and the virtual pixels 22 in the first sub-area NA1 and the virtual pixels 22 in the second sub-area NA2 are of the same color. When manufacturing the display pixels 21 at the outermost periphery of the display area AA, the virtual pixels 22 in the first sub-area NA1 and the second sub-area NA2 can be manufactured synchronously, thereby simplifying the manufacturing process of the virtual pixels 22.

[0071] The virtual pixels 22 in the third sub-area NA3 are of the same color as the display pixels 21 in an adjacent row, and the virtual pixels 22 in the third sub-area NA3 and the virtual pixels 22 in the fourth sub-area NA4 are of the same color. When manufacturing the display pixels 21 at the outermost periphery of the display area AA, the virtual pixels 22 in the third sub-area NA3 and the fourth sub-area NA4 can be manufactured synchronously, thereby simplifying the manufacturing process of the virtual pixels 22.

[0072] In other embodiments, referring to Figure 4 The virtual pixels 22 in the first sub-area NA1 and the virtual pixels 22 in the third sub-area NA3 are of the same color, the virtual pixels 22 in the second sub-area NA2 and the virtual pixels 22 in the fourth sub-area NA4 are of the same color, and the virtual pixels 22 in the first sub-area NA1 and the virtual pixels 22 in the second sub-area NA2 are of different colors.

[0073] In some other embodiments, the virtual pixels 22 in three of the four partitions are all the same color. That is, the virtual pixels 22 in the first partition NA1, the second partition NA2, and the third partition NA3 may be the same color; the virtual pixels 22 in the second partition NA2, the third partition NA3, and the fourth partition NA4 may be the same color; the virtual pixels 22 in the third partition NA3, the fourth partition NA4, and the first partition NA1 may be the same color; and the virtual pixels 22 in the fourth partition NA4, the first partition NA1, and the second partition NA2 may be the same color.

[0074] In other embodiments, please refer to Figure 5 The virtual pixels 22 in the four partitions are all the same color.

[0075] As described above, the plurality of display pixels 21 are configured as red sub-pixels, green sub-pixels, and blue sub-pixels. The plurality of virtual pixels 22 within the same partition have the same color, and the color of each virtual pixel 22 is the same as the color of one of the display pixels 21.

[0076] Please see Figure 8 Taking the G8.6, 14-inch, 2.5K product as an example: One G8.6 large board can produce 84 14-inch display panels 100. The width of the non-display area NA of the display panel 100 is set to 0.3mm; the printer's inkjet droplet volume is 4pL, the printhead print density is 1200dpi (the center distance H1 between two adjacent rows of ink droplets is set to 21.17μm), and the printer's printing frequency per row of ink droplets is 1 drop per 10µm, meaning the center distance H2 between two adjacent ink droplets in each row is set to 10µm; the concentrations of red, green, and blue inks in the luminescent layer are 3%, 2%, and 1%, respectively; the price of blue ink is X yuan / ml, the price of green ink is Y yuan / ml, and the price of red ink is Z yuan / ml, where Z > Y > X. The table below is a comparison table of ink types and costs for printing in the non-display area NA.

[0077]

[0078]

[0079] Thus, by setting the same color for multiple virtual pixels 22 within the same partition, and setting the virtual pixels 22 to green or blue, the printing cost in the non-display area NA can be guaranteed not to increase with the same ink usage.

[0080] Meanwhile, when the virtual pixel 22 is set as a blue virtual pixel, since the unit price of blue ink is the lowest, the printing cost of the non-display area NA is the lowest by using blue ink, compared with the prior art of printing by using three-color inks, the manufacturing cost of the display panel 100 can be saved, and the product competitiveness can be improved.

[0081] In one exemplary embodiment, referring to Figure 5 , the colors of the virtual pixels 22 in the four sub-areas are all the same, and all are set as blue virtual pixels; in this way, the printing cost of the virtual pixels 22 in the non-display area NA is reduced to the greatest extent.

[0082] It can be known that the display panel 100 further comprises a light-emitting material layer 23, which is arranged on the substrate 1 to form the light-emitting layers of the plurality of pixels; the maximum film formation height difference of the light-emitting layer of the virtual pixel 22 is greater than the maximum film formation height difference of the light-emitting layer of the display pixel 21; meanwhile, in the plurality of virtual pixels 22, at least part of the single virtual pixel 22 has an area greater than that of the single display pixel 21; in this way, when the inkjet printing is used to form the light-emitting material layer, the area of the virtual pixel 22 with a large area can accommodate more printing ink to create a large amount of solvent atmosphere in the area to eliminate the influence of uneven vacuum drying, thereby improving the uniformity of the film formation of the display pixel 21 in the display area AA.

[0083] The maximum film formation height difference of the virtual pixel 22 is 2 times or more of the maximum film formation height difference of the display pixel 21, such as 2 times, 2.1 times, 2.5 times, 3 times, 4 times, 5 times, 6 times, 7 times, etc. In one embodiment, the maximum film formation height difference of the virtual pixel 22 is greater than 400 nanometers, such as 401 nanometers, 410 nanometers, 420 nanometers, 450 nanometers, 480 nanometers, 500 nanometers, 600 nanometers, etc.; the maximum film formation height difference of the display pixel 21 is less than 80 nanometers, such as 79 nanometers, 75 nanometers, 70 nanometers, 65 nanometers, 60 nanometers, 55 nanometers, 50 nanometers, 40 nanometers, 30 nanometers, 20 nanometers, 10 nanometers, etc.

[0084] The maximum film formation height difference of the virtual pixel 22 refers to the difference between the maximum film layer thickness and the minimum film layer thickness of the virtual pixel 22 after the light-emitting material layer 23 is formed; correspondingly, the maximum film formation height difference of the display pixel 21 refers to the difference between the maximum film layer thickness and the minimum film layer thickness of the display pixel 21.

[0085] The same color ink has the same drying rate. By setting the same color of the plurality of virtual pixels 22 in the same partition, the maximum film forming height difference of the virtual pixels 22 in the same partition can be further reduced, thereby ensuring the film forming uniformity of the display pixels 21.

[0086] Please refer to Figures 3 to 6 The display panel 100 further includes a pixel definition layer 3 located on the substrate 1. The pixel definition layer 3 includes a plurality of first dams 31 and a plurality of second dams 32. The plurality of first dams 31 are longitudinally and transversely staggered and define a plurality of first openings 33 in the display area AA. The plurality of second dams 32 are longitudinally and transversely staggered and define a plurality of second openings 34 in the non-display area NA. The display pixels 21 are arranged in the first openings 33, and the virtual pixels 22 are arranged in the second openings 34.

[0087] The opening area of the second opening 34 is much larger than the opening area of the first opening 33. For example, the opening area of the second opening 34 is 3 times or more, such as 3 times, 4 times, 5 times, 6 times, 10 times, 20 times, 30 times, etc. of the opening area of the first opening 33.

[0088] Please refer to Figure 7 In the thickness direction F3 of the display panel 100, the thickness of the second dam 32 is greater than the thickness of the first dam 31. By setting the thickness of the second dam 32 in the non-display area NA to be greater than the thickness of the second dam 32 in the display area AA, the accommodation space of the second opening 34 is increased, so that the second opening 34 can accommodate more printing ink. On the premise of achieving the same film forming uniformity effect, in the direction from the display area AA to the non-display area NA, the size of the second opening 34 can be reduced or the arrangement number of the second opening 34 can be reduced, thereby the frame width of the display panel 100 can be reduced, and narrow frame can be more easily realized. The first dam 31 and the second dam 32 can be formed of organic material.

[0089] In an embodiment, the display panel 100 further includes a thin film transistor layer 4 arranged on the substrate 1. The thin film transistor layer 4 includes a plurality of thin film transistors arranged in an array. The pixel definition layer 3 is arranged on a side of the thin film transistor layer 4 away from the substrate 1. The thin film transistor is located between two adjacent first openings 33.

[0090] In a second aspect, the embodiments of the present application provide a display device. The display device comprises the display panel 100; it should be noted that the display panel 100 is arranged as the display panel 100 described above, that is, the display panel 100 comprises all the technical features of the display panel 100 described above, and the display device comprises all the embodiments of the display panel 100 described above, and thus has all the technical effects of the embodiments described above, which will not be repeated here.

[0091] The display device can be a display device such as an organic light-emitting diode display device, and a television, a mobile phone, a tablet computer, a notebook computer, or any large-size product or component having a display function, and the embodiments of the present application are not limited thereto.

[0092] In the description of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0093] In the above embodiments, the description of each embodiment is focused on, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0094] The embodiments of the present application, the embodiments and the related technical features can be combined or replaced with each other without conflict.

[0095] The above is only the preferred embodiments of the present application, and does not limit the present application in any form, but any simple modification, equivalent change and modification made according to the technical essence of the present application without departing from the technical solution of the present application, all still belong to the scope of the technical solution of the present application.

Claims

1. A display panel, characterized by, The display panel has a display area and a non-display area located at the periphery of the display area, and comprises: a substrate; and a plurality of pixels disposed on the substrate, the plurality of pixels comprising a plurality of display pixels located in the display area and a plurality of virtual pixels located in the non-display area, and the display area being configured with at least three kinds of display pixels of different colors; wherein at least part of the virtual pixels has an area greater than that of a single display pixel; the non-display area comprises four sub-areas corresponding to the four sides of the display area, the virtual pixels in the same sub-area have the same color, and the color of the virtual pixels is the same as that of one of the display pixels; the four sub-areas comprise a first sub-area, a second sub-area, a third sub-area and a fourth sub-area, the first sub-area and the third sub-area are respectively located on the two sides of the display area in a first direction, and the second sub-area and the fourth sub-area are respectively located on the two sides of the display area in a second direction; the virtual pixels in the first sub-area and the virtual pixels in the second sub-area have the same color, the virtual pixels in the third sub-area and the virtual pixels in the fourth sub-area have the same color, and the virtual pixels in the first sub-area and the virtual pixels in the third sub-area have different colors; the display pixels form a plurality of rows of display pixels in the first direction, the display pixels in each row are arranged along the second direction, the display pixels in each row have the same color, and the colors of the display pixels in adjacent rows are different; the virtual pixels in the first sub-area have the same color as the display pixels in an adjacent row; the virtual pixels in the third sub-area have the same color as the display pixels in an adjacent row.

2. The display panel of claim 1, wherein, The virtual pixels in the first sub-area and the virtual pixels in the third sub-area have the same color, the virtual pixels in the second sub-area and the virtual pixels in the fourth sub-area have the same color, and the virtual pixels in the first sub-area and the virtual pixels in the second sub-area have different colors.

3. The display panel of claim 1, wherein, The display pixels are configured as red sub-pixels, green sub-pixels and blue sub-pixels; the virtual pixels in the same sub-area are green virtual pixels or blue virtual pixels.

4. The display panel of claim 1, wherein, The display panel further comprises a light-emitting material layer disposed on the substrate to form a light-emitting layer of the plurality of pixels; the maximum film height difference of the light-emitting layer of the virtual pixels is greater than that of the light-emitting layer of the display pixels.

5. A display device, characterized by comprising: The display panel comprises the display panel according to any one of claims 1 to 4.

Images