Display panel and display device

Abstract

The present application discloses a display panel and a display device, the display panel comprising: an array substrate; a display array disposed on the array substrate, the display array comprising a plurality of sub-pixels; a stacked structure disposed on the light-emitting side of the display array, the stacked structure comprising a plurality of dimming structures corresponding one-to-one with the sub-pixels, the dimming structures being used to adjust the light emitted by the corresponding sub-pixels; wherein the dimming structures are not identical. The technical solution of the present application, by providing a dimming structure in the display panel, can adjust the light emitted by the corresponding sub-pixels, thereby improving the light efficiency of the display panel and reducing power consumption. Moreover, the multiple dimming structures are not identical, which can reduce the light efficiency dispersion range, thereby improving display quality.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and more specifically, to a display panel and a display device. Background Art

[0002] With the continuous development of science and technology, more and more display devices are widely used in people's daily life and work, bringing great convenience to people's daily life and work, and becoming an indispensable and important tool for people today.

[0003] The display panel is the primary component of a display device that performs its display function. Prior art techniques employ a patterned low-refractive-index film layer within the display panel, covered by a high-refractive-index film layer, effectively integrating a microlens structure (MLP) within the display panel to improve light efficiency and reduce power consumption. While this approach can improve light efficiency and reduce power consumption, it suffers from light efficiency dispersion, resulting in a wide distribution range for the light efficiency, which impacts display quality. Summary of the Invention

[0004] In view of this, the present application provides a display panel and a display device, and the solutions are as follows:

[0005] The technical solution of this application provides a display panel, comprising:

[0006] array substrate;

[0007] A display array is provided on the array substrate, the display array including a plurality of sub-pixels;

[0008] A stacked structure provided on the light-emitting side of the display array, the stacked structure including a plurality of dimming structures corresponding one to one with the sub-pixels, the dimming structures being used to adjust the light emitted by the corresponding sub-pixels;

[0009] Among them, the dimming structures are not exactly the same.

[0010] The technical solution of the present application provides another display device, including the above-mentioned display panel.

[0011] From the above description, it can be seen that in the display panel and display device provided by the technical solution of the present application, by setting a dimming structure in the display panel, the light emitted by the corresponding sub-pixel can be adjusted, thereby improving the light efficiency of the display panel and reducing power consumption. Moreover, the multiple dimming structures are not exactly the same, which can reduce the light efficiency distribution range, thereby improving the display quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0013] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the efficacy and objectives that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0014] Figure 1 A schematic structural diagram of a display panel provided in an embodiment of the present application;

[0015] Figure 2 A top view of a dimming structure layout in a display panel;

[0016] Figure 3 is a top view of the layout of the first dimming structure in the display panel;

[0017] Figure 4 is a top view of the layout of the second dimming structure in the display panel;

[0018] Figure 5 A top view of the dimming structure layout corresponding to two adjacent sub-pixels in the display panel;

[0019] Figure 6 A schematic diagram of the layout of a dimming structure in a display panel provided in an embodiment of the present application;

[0020] Figure 7 A schematic diagram of the layout of a dimming structure in another display panel provided in an embodiment of the present application;

[0021] Figure 8 A schematic diagram of the layout of a dimming structure in another display panel provided in an embodiment of the present application;

[0022] Figure 9 A schematic diagram of the layout of a dimming structure in another display panel provided in an embodiment of the present application;

[0023] Figure 10 A schematic diagram of the layout of a dimming structure in another display panel provided in an embodiment of the present application;

[0024] Figure 11A schematic diagram of the layout of a dimming structure in another display panel provided in an embodiment of the present application;

[0025] Figure 12 A schematic diagram of the layout of a dimming structure in another display panel provided in an embodiment of the present application;

[0026] Figure 13 A schematic structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] In conventional OLED display panels, a patterned low-refractive-index film layer and a high-refractive-index film layer covering the low-refractive-index film layer are generally arranged on the light-emitting side of the light-emitting element, thereby forming a dimming structure on the light-emitting element. The dimming structure formed by a low-refractive-index film layer and a high-refractive-index film layer is equivalent to a microlens film layer, including multiple microlens units corresponding one-to-one to sub-pixels.

[0029] The inventors have discovered that for OLED display panels having a low-refractive-index film layer and a high-refractive-index film layer, the dimming structure is the same. Although it can improve the light efficiency of the OLED display panel and reduce power consumption, the effects of improving light efficiency and reducing power consumption are limited. In addition, there is a problem of light efficiency dispersion, that is, the distribution range of the light efficiency is large, which affects the display quality.

[0030] In response to the above-mentioned problems, the technical solution of the present application provides a display panel and a display device. By setting a dimming structure in the display panel, the light emitted by the corresponding sub-pixel can be adjusted, thereby improving the light efficiency of the display panel and reducing power consumption. Moreover, multiple dimming structures are not exactly the same, which can reduce the light efficiency distribution range and improve the display quality.

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] like Figure 1 As shown, Figure 1 A schematic structural diagram of a display panel provided in an embodiment of the present application is shown in FIG. Figure 1 The display panel shown includes:

[0033] array substrate 11;

[0034] A display array is provided on an array substrate 11, and the display array includes a plurality of sub-pixels 12;

[0035] A stacked structure 13 disposed on the light-emitting side of the display array includes a plurality of dimming structures 131 corresponding one to each sub-pixel. The dimming structures 131 are used to adjust the light emitted from the corresponding sub-pixel.

[0036] The dimming structures 131 are not completely the same, that is, there are at least two different dimming structures 131 .

[0037] In an embodiment of the present application, by setting a dimming structure 131 in the display panel, the light emitted by the corresponding sub-pixel 12 can be adjusted, thereby improving the light efficiency of the display panel and reducing power consumption. Moreover, the multiple dimming structures 131 are not exactly the same, which can reduce the light efficiency distribution range and improve the display quality.

[0038] exist Figure 1 In the illustrated embodiment, an OLED display panel is used as an example. Subpixel 12 is an OLED light-emitting element. An encapsulation layer 14 is provided on the light-emitting side of subpixel 12. Stacked structure 13 is located on the side of encapsulation layer 14 facing away from the OLED light-emitting element.

[0039] It should be noted that the embodiments of the present application are described using an OLED display panel as an example. Obviously, in the embodiments of the present application, the display panel is not limited to an OLED display panel, but can also be an LCD display panel, or a micro LED (such as Mini LED or Micro LED) display panel. The type of display panel can be selected based on demand, and the embodiments of the application do not make specific limitations on this.

[0040] Optionally, the display panel further includes a touch layer having touch electrodes 15 that can implement touch detection. The touch layer can be arranged between the stacked structure 13 and the display array.

[0041] In the embodiment of the present application, the stacking structure 13 includes:

[0042] A first low-refractive-index film layer L1, wherein the first low-refractive-index film layer L1 has a first opening K1 arranged opposite to the sub-pixel;

[0043] A first high-refractive-index film layer H1 , which fills the first opening K1 and covers a surface of the first low-refractive-index film layer L1 that faces away from the array substrate 11 ;

[0044] A second low-refractive-index film layer L2 is located on a surface of the first high-refractive-index film layer H1 facing away from the array substrate 11 and has a second opening K2. The second opening K2 at least partially overlaps with the first opening K1 in a direction perpendicular to the array substrate 11.

[0045] A second high-refractive-index film layer H2 , which fills the second opening K2 and covers a surface of the second low-refractive-index film layer L2 facing away from the array substrate 11 ;

[0046] The dimming structure 131 includes a first opening K1 and a second opening K2 opposite to the first opening K1. If the two dimming structures 131 have at least one of the following features: different first openings K1, the same second openings K2, or different relative positions of the first openings K1 and the second openings K2.

[0047] In the embodiment of the present application, above the same sub-pixel 12, a first microlens film layer can be formed in the first opening K1 area through the first low-refractive index film layer L1 and the first high-refractive index film layer H1, and the first microlens film layer has a plurality of first microlens units corresponding one-to-one to the sub-pixels 12, and the first microlens unit includes a first opening K1, and the first opening K1 corresponds one-to-one to the sub-pixels 12, and the first opening K1 at least partially overlaps with the corresponding sub-pixel 12 in a direction perpendicular to the array substrate 11; a second microlens film layer can be formed in the second opening K2 area through the second low-refractive index film layer L2 and the second high-refractive index film layer H2, and the second microlens film layer has a plurality of second microlens units corresponding one-to-one to the sub-pixels, and the second microlens unit includes a second opening K2, and the second opening K2 corresponds one-to-one to the sub-pixels 12, and the second opening K2 at least partially overlaps with the corresponding sub-pixel 12 in a direction perpendicular to the array substrate 11.

[0048] For the same sub-pixel 12, the first microlens unit and the second microlens unit jointly adjust the light emitted by the pixel. Compared with the conventional method of adjusting the light output of the sub-pixel by forming a microlens film layer with only a low-refractive index film layer and a high-refractive index film layer, the technical solution of the present application can further improve the light efficiency. Moreover, by adjusting the design parameters of the first opening K1 and / or the second opening K2, the dimming structure 131 in the display panel can be different. This can solve the problem of wide light effect dispersion caused by process fluctuations in the double-layer microlens film layer, reduce the range of light effect dispersion, and improve display quality.

[0049] exist Figure 1In the illustrated embodiment, the dimming structures 131 corresponding to two sub-pixels 12 are shown. In the dimming structure 131 corresponding to the left sub-pixel 12, the second opening K2 is larger than the first opening K1 in a direction perpendicular to the array substrate 11, and the first opening K1 is located within the area surrounded by the second opening K2. In the dimming structure 131 corresponding to the right sub-pixel 12, the second opening K2 is smaller than the first opening K1 in a direction perpendicular to the array substrate 11, and the second opening K2 is located within the area surrounded by the first opening K1.

[0050] In the embodiments of this application, Figure 1 As shown, the distance between the first opening K1 and the opposite side walls gradually increases in the light emitting direction of the display array, that is, Figure 1 From bottom to top, the width of the first opening K1 gradually increases, so that the side wall of the first opening K1 has a first inclination angle β1 relative to the surface of the array substrate 11. The distance between the second opening K2 and the side wall gradually increases in the light emitting direction of the display array, that is, Figure 1 From bottom to top, the width of the second opening K2 gradually increases, so that the sidewall of the second opening K2 has a second inclination angle β2 relative to the surface of the array substrate 11. The first inclination angle β1 and the second inclination angle β2 are greater than 65° and less than 90°, which can achieve a better light efficiency improvement effect.

[0051] In the technical solution of the present application, the dimming structure 131 can be made non-completely identical by setting at least one of the preset parameters, namely, the relative position parameters of the first opening K1 and the second opening K2, the relative position parameters of the first opening K1 relative to the corresponding sub-pixel 12, the relative position parameters of the second opening relative to the corresponding sub-pixel, the size parameters of the first opening K1 (including the inclination angle and width corresponding to the first opening K1), and the size parameters of the second opening K2 (including the inclination angle and width corresponding to the second opening K2).

[0052] Optionally, the first inclination angle β1 and the second inclination angle β2 corresponding to the same sub-pixel 12 can be set to be different, such as one of the first inclination angle β1 and the second inclination angle β2 is equal to 75°, and the other is not equal to 75°. In a display panel with a conventional single-crystal microlens film layer, the inclination angles of the opening side walls corresponding to the microlens units above different sub-pixels are the same. The technical solution of the present application can simply set the first inclination angle β1 and the second inclination angle β2 corresponding to the same sub-pixel 12 to be different, thereby making the dimming structure 131 different. While improving the light efficiency and reducing the cost through the double-layer microlens film layer, the light efficiency distribution range is reduced. The process is simple and the production cost is low. Moreover, the side walls of the first opening K1 and the second opening K2 corresponding to the same sub-pixel 12 have different inclination angles, which can adjust the outgoing light in a wider range and improve the uniformity of the light output.

[0053] Obviously, the first inclination angle β1 and the second inclination angle β2 can be the same or different. In other embodiments, the first inclination angle β1 and the second inclination angle β2 can be set to be the same, and the dimming structure 131 can be made different by adjusting other parameters in the above-mentioned preset parameters. When the first inclination angle β1 and the second inclination angle β2 are set to be the same, and the dimming structure 131 can be made different by adjusting other parameters in the above-mentioned preset parameters, the first opening K1 and the second opening K2 are designed with the same inclination angle to facilitate manufacturing.

[0054] The thickness of the four film layers in the stacked structure 13 can be set based on demand. For example, each film layer can be set to a thickness of 2.2 μm, ensuring a thin panel while meeting the requirements of the microlens unit design. It should be noted that the thickness of each film layer in the stacked structure 13 can be set based on demand, and the thickness of different film layers can be the same or different.

[0055] In the embodiment of the present application, if the two dimming structures 131 are different, at least one of the following methods is included:

[0056] The design parameters of the first opening K1 in the two dimming structures 131 are different;

[0057] The design parameters of the second opening K2 in the two dimming structures 131 are different;

[0058] The design parameters of the first opening K1 in the two dimming structures 131 are different, and the design parameters of the second opening K2 are different;

[0059] The first openings K1 and the second openings K2 in the two dimming structures 131 are the same, but the relative positions of the first openings K1 and the second openings K2 in the same dimming structure 131 are different.

[0060] The different opening design parameters include at least one of the following: different sidewall inclination angles of the openings; different shapes of the openings; and the same opening shapes but different sizes.

[0061] like Figure 2 As shown, Figure 2 This is a top view of a dimming structure layout in a display panel. In the dimming structure 131 corresponding to the same sub-pixel 12, the first opening K1 and the second opening K2 completely overlap in the direction perpendicular to the array substrate. That is, they have the same shape and their boundaries coincide. The dotted line represents the second opening K2 located above, and the solid line represents the first opening K1 located below.

[0062] It should be noted that, in order to facilitate the illustration of the first opening K1 and the second opening K2, Figure 2In the embodiment of the present application, the first opening K1 and the second opening K2 are both indicated by their bottom boundaries in the top view, and the top view of the pixel opening of the sub-pixel 12 is also indicated by its bottom boundary.

[0063] Table 1

[0064]

[0065] As shown in Table 1 above, the first opening K1 and the second opening K2 are set to be the same, and the centers of the first opening K1, the second opening K2 and the pixel opening coincide with each other. Due to fluctuations in process parameters during the manufacturing process, the light effect distribution range will be wider.

[0066] Three samples were simulated, and the light efficiency test data is shown in Table 1 above:

[0067] In the first sample, the design values ​​of K1K2 relative to the pixel opening are both 0, that is, the design value is (0,0). The design value represents the distance between the single side of K1K2 on the same side and the corresponding single side of the pixel opening in the direction parallel to the array substrate 11. A positive value indicates that the corresponding opening in the dimming structure 131 surrounds the pixel opening. The theoretical value of the design value for the improvement of luminous efficiency is 21.3%. Due to the fluctuation of process parameters, if the design values ​​K1 and K2 are simultaneously deviated to the left by 0.5μm, the theoretical value of the improvement of luminous efficiency is 17.8%. If the design values ​​K1 and K2 are simultaneously shrunk by 1μm, the theoretical value of the improvement of luminous efficiency is 16.3%. If the design values ​​K1 and K2 are simultaneously expanded by 1μm, the theoretical value of the improvement of luminous efficiency is 19.3%. If the design values ​​K1 are deviated to the left and K2 are deviated to the right, the offsets of the left and right offsets can both be 0.5μm, and the theoretical value of the improvement of luminous efficiency is 24.7%. If the design values ​​K1 are shrunk inward and K2 are expanded outward, the offsets of the inward and outward expansion can both be 1μm, and the theoretical value of the improvement of luminous efficiency is 25.9.7%. If the design values ​​K1 are expanded outward and K2 are shrunk inward, the offsets of the inward and outward expansion can both be 1μm, and the theoretical value of the improvement of luminous efficiency is 25.9.7%. At this time, in the first sample, the average effect of different process deviations on the improvement of light efficiency is 21.3%, and the difference between the maximum improvement in light efficiency and the minimum improvement in light efficiency is 9.6%.

[0068] In the second sample, the design values ​​are (0.5, 0.5), and the distance between the single edge of K1 and K2 on the same side and the corresponding single edge of the pixel opening, parallel to the array substrate 11, is 0.5 μm. In this case, the average improvement in luminous efficiency due to different process variations in the second sample is 22%, and the difference between the maximum and minimum improvement in luminous efficiency is 12.4%.

[0069] In the third sample, the design value is (1,1), and the distance between the single edge of K1 and K2 on the same side and the corresponding single edge of the pixel opening in a direction parallel to the array substrate 11 is 1μm. In this case, the average improvement in light efficiency due to different process deviations in the third sample is 18.4%, and the difference between the maximum and minimum improvement in light efficiency is 8.7%.

[0070] Based on the data shown in Table 1, it can be seen that Figure 1 The stacked structure 13 with two layers of micro lens film can improve the light efficiency well. The second sample with the largest light efficiency improvement can achieve an average light efficiency improvement of 22%. And the light efficiency can be further improved by adjusting the design value.

[0071] In one implementation of the embodiment of the present application, the first opening K1 and the second opening K2 can be set to be the same, and the first opening K1 and the second opening K2 overlap in the direction perpendicular to the array substrate. At this time, based on Table 1, it can be seen that different dimming structures can effectively improve the lighting effect.

[0072] Optionally, in an embodiment of the present application, the vertical projection of the pixel opening of the sub-pixel 12 on the array substrate 11 is located within the vertical projection of the first opening K1 in the corresponding dimming structure 131 on the array substrate 11, and is located within the vertical projection of the second opening K2 in the corresponding dimming structure 131 on the array substrate 11, so that in the direction perpendicular to the array substrate 11, the dimming structure completely surrounds the sub-pixel 12, so as to maximize the light efficiency and improve the uniformity of the light brightness.

[0073] As shown in Table 1, if the first opening K1 and the second opening K2 in the dimming structure 131 corresponding to the same sub-pixel 12 are identical and overlap, the difference between the maximum and minimum improved luminous efficiency is greater than 8% under process parameter fluctuations. This means that the luminous efficiency improvement of the dimming structure with different design values ​​is widely distributed, and the luminous efficiency dispersion needs to be further reduced. To address this issue, the dimming structure 131 corresponding to the same sub-pixel 12 is configured so that the first opening K1 and the second opening K2 do not overlap in a direction perpendicular to the array substrate 11. Specifically, the bottom of the first opening K1 has a first perpendicular projection on the plane of the array substrate 11, and the bottom of the second opening K2 has a second perpendicular projection on the plane of the array substrate 11. The first and second perpendicular projections have different shapes, that is, the first and second perpendicular projections have different patterns, or the patterns are the same but different sizes, so that the first and second openings K1 and K2 do not overlap in a direction perpendicular to the array substrate 11.

[0074] This is because, when the first opening K1 and the second opening K2 in the same dimming structure 131 are arranged in the same, opposite arrangement, when process parameters fluctuate, the direction of change in the light effect after the fluctuation is consistent, and the overall light effect increases or decreases. However, when the first opening K1 and the second opening K2 in the same dimming structure 131 do not overlap, such as when one is larger and the other is smaller, the larger opening surrounds the smaller opening in a direction perpendicular to the array substrate 11. When process parameters fluctuate, the light effect changes in some cases, increasing while others decrease, thereby narrowing the overall light effect variation range and improving light effect uniformity.

[0075] In the embodiment of the present application, the stacked structure 13 includes: a first dimming structure and / or a second dimming structure.

[0076] like Figure 3 As shown, Figure 3 This is a top view of the layout of the first dimming structure in the display panel. In the first dimming structure, the area of ​​the first vertical projection is smaller than the area of ​​the second vertical projection, and the first vertical projection is located within the second vertical projection. In this approach, in the first dimming structure corresponding to the same sub-pixel 12, in a direction perpendicular to the array substrate 11, the first opening K1 is smaller than the second opening K2 and is located within the second opening K2.

[0077] Table 2

[0078]

[0079] Three samples were simulated, and the light efficiency test data is shown in Table 2 above:

[0080] In the first sample, the design value (0, 0.5) means that the first opening K1 overlaps the pixel opening, the second opening K2 is larger than and surrounds the pixel opening, and the distance between one side of the second opening K2 and the corresponding side of the pixel opening in a direction parallel to the array substrate 11 is 0.5 μm. In this case, the average improvement in light efficiency due to different process variations in the first sample is 21.3%, and the difference between the maximum and minimum improvement is 8.4%.

[0081] In the second sample, the design value is (0,1), meaning the first opening K1 overlaps the pixel opening, the second opening K2 is larger than and surrounds the pixel opening, and the distance between one side of the second opening K2 and the corresponding side of the pixel opening, parallel to the array substrate 11, is 1 μm. In this case, the average improvement in luminous efficiency due to different process variations in the second sample is 22.3%, and the difference between the maximum and minimum improvement is 9.9%.

[0082] In the third sample, the design value is (0.5, 1), meaning that the first opening K1 is larger than the pixel opening and surrounds and overlaps the pixel opening. The distance between one side of the first opening K1 and the corresponding side of the pixel opening, parallel to the array substrate 11, is 0.5 μm. The second opening K2 is larger than the pixel opening and surrounds the pixel opening. The distance between one side of the second opening K2 and the corresponding side of the pixel opening, parallel to the array substrate 11, is 1 μm. At this point, in the third sample, the average improvement in light efficiency due to different process deviations is 21.8%, and the difference between the maximum and minimum improvement in light efficiency is 6.1%.

[0083] Based on Table 2 above, we can see that the first dimming structure not only improves the light efficiency but also reduces the light efficiency distribution range, reducing the light efficiency distribution range to at least 6.1% of the third sample. Furthermore, the design value can be adjusted to further reduce the light efficiency distribution range.

[0084] like Figure 4 As shown, Figure 4 This is a top view of the layout of the second dimming structure in the display panel. In the second dimming structure, the area of ​​the second vertical projection is smaller than the area of ​​the first vertical projection, and the second vertical projection is located within the first vertical projection. In this approach, in the second dimming structure corresponding to the same sub-pixel 12, in a direction perpendicular to the array substrate 11, the second opening K2 is smaller than the first opening K1 and is located within the first opening K1.

[0085] Table 3

[0086]

[0087] Three samples were simulated, and the light efficiency test data is shown in Table 3 above:

[0088] In the first sample, the design value (0.5, 0) means that the first opening K1 is larger than the pixel opening and overlaps with the surrounding pixel opening. The distance between one side of the first opening K1 and the corresponding side of the pixel opening in a direction parallel to the array substrate 11 is 0.5 μm. The second opening K2 overlaps with the pixel opening. In this case, the average improvement in light efficiency due to different process variations in the first sample is 22%, and the difference between the maximum and minimum improvement in light efficiency is 5%.

[0089] In the second sample, the design value (1,0) means that the first opening K1 is larger than the pixel opening and overlaps with the surrounding pixel opening. The distance between one side of the first opening K1 and the corresponding side of the pixel opening in a direction parallel to the array substrate 11 is 1 μm. The second opening K2 overlaps with the pixel opening. In this case, the average improvement in light efficiency due to different process deviations in the second sample is 21.3%, and the difference between the maximum and minimum improvement in light efficiency is 5.8%.

[0090] In the third sample, the design values ​​are (1, 0.5), meaning the first opening K1 is larger than the pixel opening and surrounds and overlaps the pixel opening. The distance between one side of the first opening K1 and the corresponding side of the pixel opening, parallel to the array substrate 11, is 1 μm. The second opening K2 is larger than and surrounds the pixel opening. The distance between one side of the second opening K2 and the corresponding side of the pixel opening, parallel to the array substrate 11, is 0.5 μm. At this point, in the third sample, the average improvement in light efficiency due to different process deviations is 21%, and the difference between the maximum and minimum improvement in light efficiency is 8%.

[0091] Based on Table 3 above, we can see that the second dimming structure not only improves the light efficiency but also reduces the light efficiency distribution range, reducing the light efficiency distribution range to at least 5% of that of the first sample. Furthermore, the design value can be adjusted to further reduce the light efficiency distribution range.

[0092] like Figure 5 As shown, Figure 5 The top view of the dimming structure layout corresponding to two adjacent sub-pixels in the display panel. In this method, one of the adjacent two sub-pixels 12 corresponds to Figure 3 The first dimming structure shown, a corresponding Figure 4 The second dimming structure shown.

[0093] Table 4

[0094]

[0095] Three samples were simulated, and the light efficiency test data is shown in Table 4 above:

[0096] In the first sample, the design values ​​of the first dimming structure are (0, 0.5), and the design values ​​of the second dimming structure are (0.5.0), which are the combination of the design values ​​of the first sample in Table 1 and Table 2. At this time, the average effect of different process deviations on the improvement of light efficiency is 21.6%, and the difference between the maximum and minimum improvement of light efficiency is 5.3%.

[0097] In the second sample, the design value of the first dimming structure is (0, 1), and the design value of the second dimming structure is (1.0), which is a combination of the design values ​​of the first sample in Table 1 and Table 2. At this time, the average effect of different process deviations on the improvement of light efficiency is 21.8%, and the difference between the maximum and minimum improvement in light efficiency is 7.8%.

[0098] In the third sample, the design values ​​of the first dimming structure are (0.5, 1), and the design values ​​of the second dimming structure are (1.0.5), which are the combination of the design values ​​of the third sample in Table 1 and Table 2. At this time, the average effect of different process deviations on the improvement of light efficiency is 21.4%, and the difference between the maximum and minimum improvement of light efficiency is 5.6%.

[0099] As shown in Table 4 above, using both the first and second dimming structures not only improves light efficiency but also reduces the light efficiency distribution range, reducing it to at least 5.3% of the range corresponding to the third sample. Furthermore, the design value can be adjusted to further reduce the light efficiency distribution range.

[0100] From the above description, it can be seen that the display panel is provided with a first dimming structure and / or a second dimming structure, that is, in the same dimming structure 131, the first opening K1 and the second opening K2 are different, and one surrounds the other, that is, in the same dimming structure 131, the first opening K1 and the second opening K2 are one large and one small, and one surrounds the other, which can effectively reduce the problem of large light effect dispersion.

[0101] In the embodiment of the present application, the first opening K1 and the second opening K2 are similar geometric shapes, thereby making the first and second perpendicular projections similar geometric shapes. In a direction perpendicular to the plane of the array substrate 11, the geometric centers of the first and second perpendicular projections in the same dimming structure 131 coincide with the geometric centers of the corresponding sub-pixels 12. This reduces the range of light effect dispersion, facilitates the alignment of the two openings in the dimming structure 131, and reduces the difficulty of the manufacturing process.

[0102] It should be noted that, in the embodiment of the present application, the geometric figures of the first opening, the second opening and the pixel opening are figures of vertical projection on the array substrate 11 .

[0103] In the embodiment of the present application, in a direction perpendicular to the array substrate 11, the first opening K1 and the second opening K2 both surround the pixel opening of the sub-pixel 12. The first opening K1 and the second opening K2 can be configured to have similar geometric shapes to the pixel opening of the sub-pixel 12. The corresponding geometric shapes of the first opening K1 and the second opening K2 are configured based on the geometric shape of the pixel opening of the sub-pixel 12. For example, if the pixel opening is rectangular, the corresponding first opening K1 and the second opening K2 are rectangular. If the pixel opening is circular, the corresponding first opening K1 and the second opening K2 are circular. In other embodiments, the first opening K1 and the second opening K2 can also be configured to have dissimilar geometric shapes to the pixel opening of the sub-pixel 12.

[0104] like Figure 6 As shown, Figure 6 This is a schematic diagram of a layout of a dimming structure in a display panel provided in an embodiment of the present application. In this method, all sub-pixels 12 are correspondingly configured as follows: Figure 3 In the first dimming structure shown, the geometric centers of the first and second vertical projections coincide with the geometric centers of the corresponding sub-pixels 12. The design values ​​of the first dimming structure are not completely identical. This approach reduces the range of light effect dispersion while facilitating the alignment of the two openings in the dimming structure 131 and reducing the difficulty of the manufacturing process.

[0105] like Figure 7 As shown, Figure 7 This is a schematic diagram of the layout of another dimming structure in a display panel provided in an embodiment of the present application. In this method, all sub-pixels 12 are correspondingly configured as follows: Figure 4 In the second dimming structure shown, the geometric centers of the first and second vertical projections coincide with the geometric centers of the corresponding sub-pixels 12, but the design values ​​of the second dimming structure are not completely identical. This approach reduces the range of light effect dispersion while facilitating the alignment of the two openings in the dimming structure 131 and reducing the difficulty of the manufacturing process.

[0106] like Figure 8 As shown, Figure 8 This is a schematic diagram of the layout of another dimming structure in a display panel provided in an embodiment of the present application. In this method, some sub-pixels 12 are correspondingly configured as follows: Figure 3 In the first dimming structure shown, some sub-pixels 12 are correspondingly configured as follows: Figure 4 In the second dimming structure shown, the geometric centers of the first and second perpendicular projections coincide with the geometric centers of the corresponding sub-pixels 12. The design values ​​of the first dimming structure can be the same or different, and the design values ​​of the second dimming structure can be the same or different. This approach reduces the range of light effect dispersion while facilitating the alignment of the two openings in the dimming structure 131, reducing the difficulty of the manufacturing process.

[0107] In the embodiment of the present application, the bottom of the first opening K1 is configured to have a first vertical projection on the plane of the array substrate 11, and the bottom of the second opening K2 is configured to have a second vertical projection on the plane of the array substrate 11. For the same dimming structure 131, in a direction perpendicular to the plane of the array substrate 11, the first vertical projection and the second vertical projection partially overlap, and the area of ​​this overlapping portion is larger than the area of ​​the sub-pixel 12. The sub-pixel 12 corresponding to the dimming structure 131 is at least partially located within the overlapping portion of the first and second vertical projections. In this approach, by setting the relative positions of the first opening K1 and the second opening K2, at least the overlapping portions corresponding to the dimming structures 131 are different, so that the dimming structures 131 in the display panel are not completely identical, thereby resolving the problem of reducing the dispersion range of light efficiency.

[0108] In a direction perpendicular to the plane of the array substrate 11, for the same dimming structure 131, when the first vertical projection partially overlaps with the second vertical projection, the area of ​​the overlapping portion can be set to be larger than the area of ​​the sub-pixel 12, and the sub-pixel 12 is completely located in the overlapping portion, or the area of ​​the overlapping portion can be set to be smaller than the area of ​​the sub-pixel 12, and the sub-pixel 12 is partially located in the overlapping portion.

[0109] In a direction perpendicular to the plane of the array substrate 11, for the same dimming structure 131, when the first vertical projection and the second vertical projection partially overlap, the structure of the display panel includes but is not limited to Figures 9-11 The method shown.

[0110] like Figure 9 As shown, Figure 9 This is a schematic diagram of the layout of another dimming structure in a display panel provided in an embodiment of the present application. In this arrangement, the first opening K1 and the second opening K2 are both squares with the same side length. In a direction perpendicular to the plane of the array substrate 11, the two squares have a 1 / 4 overlap area. The vertex of the square corresponding to the first opening K1 is at the center of the square corresponding to the second opening K2, and the vertex of the square corresponding to the second opening K2 is at the center of the square corresponding to the first opening K1. In other words, for the same dimming structure 131, the first vertical projection and the second vertical projection are squares with the same side length; one vertex of the first vertical projection is located at the geometric center of the second vertical projection; and one vertex of the second vertical projection is located at the geometric center of the first vertical projection. In this arrangement, the sub-pixels 12 are arranged in an array, the first openings K1 are arranged in an array, and the second openings K2 are arranged in an array.

[0111] exist Figure 9 In the illustrated embodiment, the relative positions of the first opening K1 and the second opening K2 in at least two dimming structures 131 are different, so that the corresponding overlapping portions are different, thereby making the dimming structures 131 in the display panel not completely the same, thereby solving the problem of reducing the distribution range of light efficiency.

[0112] like Figure 10 As shown, Figure 10 This is a schematic diagram of another layout of a dimming structure in a display panel provided by an embodiment of the present application. In this method, for the same dimming structure 131, the first vertical projection and the second vertical projection are squares with the same side length; one vertex of the first vertical projection is located at the geometric center of the second vertical projection; and one vertex of the second vertical projection is located at the geometric center of the first vertical projection. Figure 9 The difference between the two methods is that Figure 10 In the manner shown, the sub-pixels 12 are arranged in an array. For two adjacent sub-pixels 12 in the same row, the first opening K1 corresponding to one sub-pixel 12 and the second opening K2 corresponding to the other sub-pixel 12 are adjacently arranged in the row direction of the sub-pixel array. For two adjacent sub-pixels 12 in the same column, the first opening K1 corresponding to one sub-pixel 12 and the second opening K2 corresponding to the other sub-pixel 12 are adjacently arranged in the column direction of the sub-pixel array.

[0113] exist Figure 10In the illustrated embodiment, the relative positions of the first opening K1 and the second opening K2 in at least two dimming structures 131 are different, so that the corresponding overlapping portions are different, thereby making the dimming structures 131 in the display panel not completely the same, thereby solving the problem of reducing the distribution range of light efficiency.

[0114] like Figure 11 As shown, Figure 11 This is a schematic diagram of another layout of a dimming structure in a display panel provided in an embodiment of the present application. In this arrangement, the first opening K1 and the second opening K2 are both rectangular. In the same dimming structure 131, in a direction perpendicular to the array substrate 11, the long side of the rectangle containing the first opening K1 and the long side of the rectangle containing the second opening K2 intersect perpendicularly. In other words, the first vertical projection and the second vertical projection are both rectangular. In the same dimming structure 131, the long side of the rectangle corresponding to the first vertical projection and the long side of the rectangle corresponding to the second vertical projection intersect perpendicularly. The first opening K1 and the second opening K2 can be rectangles of the same size.

[0115] exist Figure 11 In the illustrated embodiment, the relative positions of the first opening K1 and the second opening K2 in at least two dimming structures 131 are different, so that the corresponding overlapping portions are different, thereby making the dimming structures 131 in the display panel not completely the same, thereby solving the problem of reducing the distribution range of light efficiency.

[0116] In the embodiment of the present application, the stacked structure 13 includes multiple repeating units, each of which includes multiple dimming structures 131. The dimming structures 131 in different repeating units are arranged in the same manner. The repeating units facilitate the layout of the dimming structures 131 in the stacked structure 13, simplifying the manufacturing method and reducing manufacturing costs.

[0117] exist Figures 8-11 In the method shown in , the dotted line area represents a repeating unit. The arrangement of the repeating units can be set based on the needs and is not limited to Figures 8-11 It should be noted that Figures 8-11 The region indicated by the dot-dash line in the manner shown in FIG. 1 is only used to illustrate the repeating unit, and the boundary indicated by the dot-dash line does not exist in the actual display panel.

[0118] like Figure 12 As shown, Figure 12 A schematic diagram of the layout of a dimming structure in another display panel provided in an embodiment of the present application, in which the stacked structure 13 includes a plurality of repeating units as shown in the dotted line area, and the repeating unit includes a plurality of the dimming structures 131. The plurality of repeating units are arranged in an array. In the four repeating units arranged in 2×2, the dimming structures in the two diagonal repeating units are arranged in the same manner, and the dimming structures of the four repeating units are arranged in the same manner after being rotated 90° based on a preset rotation center. Specifically, in Figure 12 Of the four repeating units shown, the dimming structures are arranged in the same manner in the repeating unit in the upper left corner and the repeating unit in the lower right corner, and the dimming structures are arranged in the same manner in the repeating unit in the upper right corner and the repeating unit in the lower left corner. In this arrangement, since the dimming structures are arranged in the same manner after the four repeating units in the 2×2 arrangement are rotated 90° around the preset rotation center, the dimming structures in the display panel are arranged in the same manner before and after the 90° rotation. The dimming structures have a consistent modulation effect on the entire display panel, ensuring relatively consistent image display quality in two different usage modes, such as when the mobile phone is used in landscape or portrait mode.

[0119] Based on the above embodiment, another embodiment of the present application further provides a display device, such as Figure 13 As shown, Figure 13 This is a structural schematic diagram of a display device provided in an embodiment of the present application. The display device includes a display panel 21. The display panel 21 is the display panel described in any one of the above embodiments.

[0120] In the embodiments of the present application, the display device includes but is not limited to a mobile phone, a laptop computer, a tablet computer, an all-in-one computer, and a wearable device with a display function. The display device uses the display panel of the above embodiment, which can improve the light effect, reduce power consumption, and reduce the range of light effect dispersion.

[0121] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on the differences from other embodiments, and reference can be made to the corresponding similar parts between the various embodiments. With respect to the display device disclosed in the embodiments, since it corresponds to the display panel disclosed in the embodiments, the description is relatively simple. For relevant parts, refer to the corresponding description of the display panel.

[0122] It should be noted that in the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a centrally located component.

[0123] It should also be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the article or device comprising the aforementioned elements.

[0124] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: include: array substrate; A display array is provided on the array substrate, wherein the display array includes a plurality of sub-pixels; A stacked structure provided on the light-emitting side of the display array, the stacked structure comprising a plurality of dimming structures corresponding one-to-one to the sub-pixels, the dimming structures being used to adjust the outgoing light of the corresponding sub-pixels; The stacked structure includes: a first low-refractive-index film layer, the first low-refractive-index film layer having a first opening arranged opposite to the sub-pixel; a first high-refractive-index film layer, the first high-refractive-index film layer filling the first opening and covering a surface of the first low-refractive-index film layer facing away from the array substrate; a second low-refractive-index film layer, the second low-refractive-index film layer being located on a surface of the first high-refractive-index film layer facing away from the array substrate and having a second opening; the second opening at least partially overlapping the first opening in a direction perpendicular to the array substrate; and a second high-refractive-index film layer, the second high-refractive-index film layer filling the second opening and covering a surface of the second low-refractive-index film layer facing away from the array substrate. The dimming structure includes: the first opening and the second opening opposite to the first opening; the dimming structures are not completely the same; if the two dimming structures are different, at least one of the following is included: the design parameters of the first opening in the two dimming structures are different; the design parameters of the second opening in the two dimming structures are different; the design parameters of the first opening in the two dimming structures are different, and the design parameters of the second opening are different; the first opening and the second opening in the two dimming structures are the same, and the relative positions of the first opening and the second opening in the same dimming structure are different; The different opening design parameters include at least one of the following: different sidewall inclination angles of the openings; different shapes of the openings; and the same opening shapes but different sizes.

2. The display panel according to claim 1, wherein: The distance between the first opening and the side wall increases gradually in the light emitting direction of the display array, so that the side wall of the first opening has a first inclination angle relative to the surface of the array substrate; The distance between the second opening and the side wall gradually increases in the light emitting direction of the display array, so that the side wall of the second opening has a second inclination angle relative to the surface of the array substrate; Wherein, the first inclination angle and the second inclination angle are greater than 65° and less than 90°.

3. The display panel according to claim 2, wherein: The first inclination angle and the second inclination angle corresponding to the same sub-pixel are different.

4. The display panel according to claim 1, wherein: The first opening is identical to the second opening, and in a direction perpendicular to the array substrate, geometric centers of the first opening and the second opening coincide with each other.

5. The display panel according to claim 1, wherein: The bottom of the first opening has a first vertical projection on the plane where the array substrate is located, and the bottom of the second opening has a second vertical projection on the plane where the array substrate is located; The first vertical projection and the second vertical projection have different shapes; The stacked structure includes: a first dimming structure and / or a second dimming structure; In the first dimming structure, the area of ​​the first vertical projection is smaller than the area of ​​the second vertical projection, and the first vertical projection is located within the second vertical projection; In the second dimming structure, an area of ​​the second vertical projection is smaller than an area of ​​the first vertical projection, and the second vertical projection is located within the first vertical projection.

6. The display panel according to claim 5, wherein: The first vertical projection and the second vertical projection are similar geometric figures; In a direction perpendicular to the plane of the array substrate, in the same dimming structure, the geometric centers of the first vertical projection and the second vertical projection both coincide with the geometric centers of the corresponding sub-pixels.

7. The display panel according to claim 1, wherein: The bottom of the first opening has a first vertical projection on the plane where the array substrate is located, and the bottom of the second opening has a second vertical projection on the plane where the array substrate is located; For the same dimming structure, in a direction perpendicular to the plane of the array substrate, the first vertical projection partially overlaps with the second vertical projection, the area of ​​the overlapping portion is larger than the area of ​​the sub-pixel, and the sub-pixel corresponding to the dimming structure is at least partially located in the overlapping portion of the first vertical projection and the second vertical projection.

8. The display panel according to claim 7, wherein: The first vertical projection and the second vertical projection are squares with the same side length; A vertex of the first vertical projection is located at the geometric center of the second vertical projection; a vertex of the second vertical projection is located at the geometric center of the first vertical projection.

9. The display panel according to claim 7, wherein: The first vertical projection and the second vertical projection are both rectangles; in the same dimming structure, the long side of the rectangle corresponding to the first vertical projection and the long side of the rectangle corresponding to the second vertical projection are perpendicularly intersected.

10. The display panel according to claim 1, wherein The stacked structure includes a plurality of repeating units, and the repeating unit includes a plurality of the dimming structures; The dimming structures in different repeating units are arranged in the same manner.

11. The display panel according to claim 1, wherein The stacked structure includes a plurality of repeating units, each of which includes a plurality of the dimming structures; the repeating units are arranged in an array; In the four repeating units arranged in a 2×2 arrangement, the dimming structures in the two diagonal repeating units are arranged in the same manner, and the dimming structures in the four repeating units are arranged in the same manner after being rotated 90° based on a preset rotation center.

12. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 11.

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