Display panel and display device

Abstract

The present application provides a display panel and a display device, which relate to the field of display technology. The display panel includes a substrate, a driving circuit layer, a display function layer and a light-emitting layer. The driving circuit layer is located on the substrate and includes a plurality of signal lines. The plurality of signal lines are located in the display area of ​​the display panel, extend along a first direction, and are arranged in parallel with a first period in a second direction intersecting the first direction. The display function layer is located on the side of the driving circuit layer away from the substrate and includes a plurality of sub-pixels. The sub-pixels are arranged in parallel in a second period different from the first period in the second direction, and each sub-pixel includes a reflective electrode arranged on the substrate. The reflective layer is arranged on the substrate and includes a plurality of reflective blocks arranged in the second direction, and the plurality of reflective blocks are used to destroy the arrangement period of the effective reflective areas corresponding to the plurality of reflective electrodes in the second direction. In this way, the moiré phenomenon generated in the display panel is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device having the display panel. Background Art

[0002] With the advancement of display technology, people are increasingly pursuing narrower bezels for display panels. One approach to achieving narrow bezels is to compress at least a portion of the driver circuit wiring and place it within the display panel's display area. However, with this approach, the period of the compressed driver circuit array wiring does not match the period of the anode arrangement in the display panel, resulting in moiré patterns in the screen's reflection pattern and displayed image. Summary of the Invention

[0003] The first aspect of the present application provides a display panel, which includes a substrate, a driving circuit layer, a display function layer and a light-emitting layer. The driving circuit layer is located on the substrate and includes a plurality of signal lines. The plurality of signal lines are located in a display area of ​​the display panel, extend along a first direction, and are arranged in parallel with a first period in a second direction intersecting the first direction. The display function layer is located on a side of the driving circuit layer away from the substrate and includes a plurality of sub-pixels. The sub-pixels are arranged in parallel in a second period different from the first period in a second direction, and each sub-pixel includes a reflective electrode arranged on the substrate. The reflective layer is arranged on the substrate and includes a plurality of reflective blocks arranged in the second direction, and the plurality of reflective blocks are used to destroy the arrangement period of the effective reflective areas corresponding to the plurality of reflective electrodes in the second direction.

[0004] In the above solution, the multiple reflective blocks provided in the display panel cooperate with the reflective electrodes to change the effective reflective area corresponding to the sub-pixels, thereby disrupting the periodicity of their arrangement in the second direction and thereby improving the moiré effect that occurs in the display panel. Furthermore, the design of the reflective blocks can also prevent the sub-pixels from exhibiting a periodic arrangement in the second direction, thereby eliminating the moiré effect that occurs in the display panel.

[0005] In combination with the first aspect, in some embodiments, the reflective block includes a first edge extending in the second direction, and the shape of the first edge is a sine curve or at least a portion of a sine curve.

[0006] In the above solution, the periodic change of the reflective area corresponding to the reflective block in the second direction corresponds to the periodic change of the sub-pixels in the second direction, which can reduce the period of the sub-pixels arranged in the second direction or eliminate the period.

[0007] In conjunction with the first aspect, in some embodiments, within the gap between sub-pixels, the portion corresponding to the first edge is shaped like a trough. Furthermore, a trough is provided between each adjacent sub-pixel, and the reflective block corresponding to the trough has the smallest reflective area. Furthermore, the trough is provided on a perpendicular midline between adjacent sub-pixels.

[0008] In the above solution, by setting the position of the trough of the first edge of the reflective block relative to the sub-pixels, the arrangement period of the sub-pixels in the second direction can be effectively destroyed.

[0009] In combination with the first aspect, in some embodiments, the reflective block further includes a second edge extending along the second direction, and the shape of the second edge is a straight line or a figure that is axially symmetrical with the first edge.

[0010] In the above solution, the design of the second edge of the reflective block is mainly based on the consideration of reducing the difficulty of designing and processing the reflective block.

[0011] In combination with the first aspect, in some embodiments, the reflective blocks include first reflective blocks and second reflective blocks alternately arranged in a first direction, and the second reflective blocks are spaced apart from each other and located in the gaps between the sub-pixels.

[0012] In the above solution, the second reflective block arranged in the sub-pixel gap cooperates with the first reflective block to overlap the reflective area in the first direction, which is more conducive to destroying the arrangement period of the effective reflective area of ​​the sub-pixels in the second direction.

[0013] In conjunction with the first aspect, in some embodiments, during the second period, a portion of the first edge of the first reflective block located within the sub-pixel gap and a portion of the first edge of the second reflective block located within the sub-pixel gap form complementary patterns in the first direction, where the complementary patterns are at least a portion of a sine curve or a sine curve approximation. Furthermore, the complementary patterns are shaped as a continuous sine curve or a sine curve approximation.

[0014] In the above solution, the complementary patterns of the first reflective block and the second reflective block are a continuous sine curve or a solution similar to a sine curve, which can effectively reduce or even eliminate the arrangement period of the sub-pixels.

[0015] In conjunction with the first aspect, in some embodiments, the shape of the first edge of the first reflective block is a continuous sine curve or a near-sine curve. Further, the first reflective block is located between the display function layer and the substrate. Further, the first reflective block is located in the drive circuit layer.

[0016] In the above solution, the reflective layer is provided as a different layer from the reflective electrode, which reduces the difficulty of designing and producing the first reflective block.

[0017] In combination with the first aspect, in some embodiments, the first light reflecting blocks are spaced apart from each other and located in the gaps between the sub-pixels. Furthermore, the first light reflecting blocks are in the same layer as the reflective electrode.

[0018] In the above solution, the first reflective blocks are arranged in a spaced-apart arrangement, which can minimize the impact of the reflective layer on the light extraction efficiency of the display panel. In addition, the first reflective blocks and the reflective electrode are arranged on the same layer, which is conducive to achieving a lighter and thinner display panel.

[0019] In combination with the first aspect, in some embodiments, the first reflective block and the second reflective block are in the same layer.

[0020] In the above solution, the first reflective block and the second reflective block are arranged in the same layer, which reduces the production cost of the display panel.

[0021] In combination with the first aspect, in some embodiments, multiple sub-pixels are classified into a first sub-pixel that emits light of a first color, a second sub-pixel that emits light of a second color, and a third sub-pixel that emits light of a third color, and the pixel area of ​​the first sub-pixel is larger than the pixel area of ​​the second sub-pixel, the pixel area of ​​the third sub-pixel is larger than the pixel area of ​​the second sub-pixel, and the second reflective block is arranged around the second sub-pixel.

[0022] In combination with the first aspect, in some embodiments, at least two columns of sub-pixels are arranged in a second period, and the sum of the effective light-reflecting areas corresponding to the sub-pixels in each column is different.

[0023] In the above solution, a second reflective block is provided around the second sub-pixel, which not only enables effective utilization of the remaining space on the display panel layout and improves the integration of the display panel, but also facilitates the design and preparation of the second reflective block, saving the production cost of the display panel.

[0024] A second aspect of the present application provides a display device, which includes the display panel of any one of the above-mentioned first aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. 1 is a schematic plan view of a display panel in an embodiment of the present application.

[0026] Figure 2 It is a plan view of a display panel in another embodiment of the present application.

[0027] Figure 3 FIG. 1 is a schematic plan view of a display panel in an embodiment of the present application.

[0028] Figure 4 This application Figure 3 Cross-sectional view of the display panel in the M1N1 direction.

[0029] Figure 5 is a plan view of a display panel in one embodiment of the present application.

[0030] Figure 6 FIG. 1 is a plan view of a display panel according to an embodiment of the present application.

[0031] Figure 6a This application Figure 6 A Fourier transform curve of the lateral arrangement period of the signal lines included in the display panel.

[0032] Figure 6b This application Figure 6 The anodes of the sub-pixels of the display panel are arranged with a periodic Fourier transform curve in the horizontal direction.

[0033] Figure 6c This application Figure 6 The curve is the result of merging the Fourier transform curve of the signal line and the arrangement period of the anode in the horizontal direction.

[0034] Figure 7 This application Figure 6 Cross-sectional view of the display panel in the M2N2 direction.

[0035] Figure 8 It is a plan view of a display panel in another embodiment of the present application.

[0036] Figure 9 This application Figure 8 Cross-sectional view of the display panel in the M3N3 direction. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Since there are various array traces at the edge of the display panel, such as GIP circuits, data signal lines, scan signal lines, etc., these traces are generally located outside the display area of ​​the display panel, that is, at the border, making it basically impossible for the display panel to achieve borderless display. However, with the increasing demand of consumers and end customers for narrow borders of display panels, how to further compress the border width of the display panel has become a research focus. At present, an improved solution for this problem has been proposed. In this solution, the array layout of the display panel is compressed, and part of the array traces, such as the GIP circuit, are placed under the pixels of the display area of ​​the display panel, thereby achieving a narrow border. However, with the compression of the array layout, the period of the array traces and the period of the sub-pixels of the display panel do not match, which leads to the problem of moiré in the screen reflection pattern and the displayed image.

[0039] The structure of a display panel according to at least one embodiment of the present disclosure is described below with reference to the accompanying drawings. In these embodiments, a spatial rectangular coordinate system is established with the display panel (e.g., its display surface) as a reference to describe the positions of various structures of the display panel. In this spatial rectangular coordinate system, the X-axis and Y-axis are parallel to the display panel, and the Z-axis is perpendicular to the display panel.

[0040] First, in conjunction with the layout design of the display panel, the reasons why moiré patterns are generated after array routing compression are specifically explained.

[0041] For example, refer to Figure 1 As can be seen from the plan view of the display panel 10, the display panel 10 includes a substrate 100 and a plurality of signal lines 210 disposed on the substrate 100, extending along a first direction, or Y direction (also referred to as a longitudinal direction), and arranged in parallel in a second direction, or X direction (also referred to as a transverse direction). The signal lines 210 can be power signal lines (Vdd) or display signal lines (Vdata). Furthermore, the display panel 10 also includes sub-pixels 310 disposed on the substrate 100 and periodically arranged in both the transverse and longitudinal directions, i.e., arranged in an array. At this time, the array layout of the display panel 10 is not compressed, and the corresponding array routing, i.e., the signal line, has an arrangement period of T1 = 30.85 μm in the second direction, i.e., the horizontal direction, and the sub-pixel 310 has an arrangement period of T2 = 30.85 μm in the horizontal direction, i.e., the anode included in the sub-pixel has an arrangement period of T3 = T2 = 30.85 μm in the horizontal direction, which is the same as the arrangement period of the signal line 210 in the horizontal direction. Therefore, no moiré pattern appears in the display pattern and reflection pattern of the display panel 10.

[0042] In order to achieve the effect of narrow frame, the arrangement period of the signal line 210 of the display panel 10 is compressed to 90%, and the following can be obtained: Figure 2The display panel 10 shown in FIG. The signal lines 210 of the compressed display panel 10 have a horizontal arrangement period of T4 = 27.77 μm, which is about 3 μm different from the horizontal arrangement period T3 of the anodes 311 .

[0043] Specifically, referring to the calculation formula of the difference frequency: Tdiff = |1 / (1 / T3-1 / T4)| = (T3*T4) / |T3-T4| (Tdiff is the difference frequency period, T3 is the arrangement period of the anode, and T4 is the arrangement period of the signal line), it can be seen that after the array routing, that is, the arrangement of the signal line is compressed by 90%, the difference frequency generated between the arrangement period of the anode in the second direction and the arrangement period of the signal line in the second direction, that is, Tdiff = (30.85*27.77) / |30.85-27.77| = 280um, and the frequency of the difference frequency has reached the range that can be recognized by the human eye, so moiré patterns appear in the display image and reflected image of the display panel.

[0044] Based on this, an embodiment of the present application provides a display panel and a display device having the display panel. By setting a reflective layer in the display panel, the arrangement period of the effective reflective area corresponding to the sub-pixel in the second direction is destroyed, thereby reducing or eliminating the difference frequency between the arrangement period in the horizontal direction of the anode and the arrangement period in the horizontal direction of the signal line, and further improving or eliminating the phenomenon of moiré patterns in the displayed image and the reflected image caused by the difference frequency between the two.

[0045] An embodiment of the present application provides a display panel, which includes a substrate, a driving circuit layer, and a display function layer. The driving circuit layer is located on the substrate and includes a plurality of signal lines. The plurality of signal lines are located in the display area of ​​the display panel, extend along a first direction, and are arranged in parallel with a first period in a second direction intersecting the first direction. The display function layer is located on the side of the driving circuit layer away from the substrate and includes a plurality of sub-pixels. The sub-pixels are arranged in parallel with a second period different from the first period in the second direction, and each sub-pixel includes a reflective electrode provided on the substrate. It is important to note that, considering that the lateral arrangement period of the signal lines in the display panel is different from the lateral arrangement period of the sub-pixels, which leads to the problem of moiré, a reflective layer is also provided on the substrate in the display panel, and the reflective layer includes a plurality of reflective blocks arranged in the second direction, and the plurality of reflective blocks are used to destroy the arrangement period of the effective reflective areas corresponding to the plurality of reflective electrodes in the second direction. In this way, the multiple reflective blocks cooperate with the reflective electrodes to increase the effective reflective area corresponding to the sub-pixels, thereby reducing the frequency of the sub-pixel arrangement period in the second direction, thereby reducing the frequency difference between the sub-pixel and signal line arrangement periods in the second direction, thereby improving the moiré effect in the display panel. Furthermore, the design of the reflective blocks can also eliminate the periodic arrangement of the sub-pixels in the second direction, that is, the arrangement period is completely absent. As a result, the frequency difference between the sub-pixel and signal line arrangement periods in the second direction in the second direction is also eliminated, thereby eliminating the moiré effect in the display panel.

[0046] For example, referring to Figure 3 A plan view of the display panel 10 and Figure 4 exist Figure 3 As can be seen from the cross-sectional view of the display panel at M1N1, the display panel 10 includes a substrate 100, a driving circuit layer 200, a display function layer 300 and a reflective layer 400. Figure 4 As can be seen from the plan view of the display panel 10, the display panel 10 includes a substrate divided into a display area AA, and the driving circuit layer 200 includes a plurality of signal lines 210 located in the display area AA. The plurality of signal lines 210 extend in the longitudinal direction, i.e., the Y direction, and are arranged in parallel in the transverse direction, i.e., the X direction, which is perpendicular to the X direction. In the display area AA divided by the substrate 100, a plurality of sub-pixels 310 are arranged in a periodic array in the X and Y directions, and are combined with the Figure 4It can be seen that each sub-pixel 310 includes an anode 311, a light-emitting functional layer 312 and a cathode 313 on the substrate, and the anode 311 is a reflective electrode. In the display panel 10, the light-emitting functional layer 312 includes common layers between different sub-pixels 310, such as a hole transport layer, a hole injection layer, an electron transport layer and an electron injection layer, and the cathode 313 is usually also set as a common electrode between different sub-pixels. Therefore, it is the anode 311 corresponding to each sub-pixel 310, i.e., the reflective electrode, that determines the relevant parameters of each sub-pixel 310, such as the surface area or arrangement period. According to the reason for the moiré pattern in the display panel 10, in the display panel 10, a reflective layer 400 is set accordingly according to the lateral arrangement period of the anode 311. The reflective layer 400 is located on the substrate 100 and includes a plurality of reflective blocks 410 arranged in a first direction, i.e., the Y direction, that is, a longitudinal direction, with intervals therebetween. In addition, a plurality of reflective blocks 420 are provided corresponding to the anodes 311 of different sub-pixels 310 arranged in a second direction, i.e., the X direction, that is, the transverse direction. That is, the plurality of reflective blocks 420 are arranged in the transverse direction, and after the reflective areas of the plurality of reflective blocks 420 are superimposed with the surface area of ​​the reflective electrode, i.e., the reflective areas of the anodes 311 of all sub-pixels 310 in each longitudinal direction are superimposed with the effective reflective areas of all reflective blocks 420 corresponding to the longitudinal direction, on the whole, the transverse fluctuations between the superimposed effective reflective areas in each longitudinal direction are weakened, thereby destroying the arrangement period of the effective reflective areas corresponding to the plurality of anodes 310 in the transverse direction.

[0047] It should be understood that disrupting the horizontal arrangement period of the effective reflective area of ​​the anodes includes reducing the horizontal arrangement period of the anodes and eliminating the horizontal arrangement period of the anodes, that is, the horizontal arrangement of the anodes is irregular, so that the corresponding arrangement period is infinite. In addition, the effective reflective area of ​​the anode refers to the sum of the surface area of ​​the anode and the portion of the surface area of ​​the corresponding reflective block that does not spatially overlap with the anode.

[0048] Based on the idea of ​​providing a reflective block in the display panel to destroy the periodic arrangement of the effective reflective area of ​​the reflective electrode in the second direction, this embodiment will provide a detailed introduction to the design of the reflective block in combination with the arrangement of sub-pixels in the display panel.

[0049] For example, in some embodiments, at least two columns of sub-pixels are arranged in one second period, and the sum of the effective light-reflecting areas corresponding to the sub-pixels in each column is different.

[0050] For example, Figure 3As shown, the display panel includes a plurality of first sub-pixels 310a, a plurality of second sub-pixels 310b, and a plurality of third sub-pixels 310c. The three sub-pixels 310 are arranged in an array, and the pixel area corresponding to each sub-pixel 310 is different. Specifically, the first sub-pixel 310a is a sub-pixel R that emits red light, the second sub-pixel 310b is a sub-pixel G that emits green light, and the third sub-pixel 310c is a sub-pixel B that emits blue light. The pixel area of ​​sub-pixel R is larger than the pixel area of ​​sub-pixel B, and the pixel area of ​​sub-pixel B is larger than the pixel area of ​​sub-pixel G. In a second period ( Figure 3 The dotted box in the middle is a second period), involving three columns of sub-pixels. It can be clearly seen from the figure that the middle column corresponds to sub-pixel G, and sub-pixel R and sub-pixel B are set in each of the two columns on both sides, that is, the sum of the effective reflective areas corresponding to all sub-pixels 310 in each two adjacent columns is not equal, that is, the total surface area of ​​the anode is not equal.

[0051] Based on the rules for setting the reflective blocks between sub-pixels and in combination with the layout design of the display panel, this embodiment also defines the planar structure of the reflective blocks, as follows.

[0052] In some embodiments, the reflective block includes a first edge extending in the second direction, and the shape of the first edge is a sine curve or at least a portion of a sine curve. In this way, the edge of the reflective block extending in the second direction is arranged as a periodically changing line, which limits the periodic change of the reflective area corresponding to the reflective block in the second direction, which corresponds to the periodic change of the sub-pixels in the second direction, thereby reducing the period of the sub-pixel arrangement in the second direction or eliminating the period. For example, Figure 5 As shown, the reflective block 410 disposed around the sub-pixel 310 in the display panel 10 includes a first edge 413 extending in the transverse direction. The image presented by the first edge 413 is a sine curve.

[0053] It should be understood that the shape of the first edge mentioned in the above example presents at least a portion of a sine curve, which means that in the rectangular coordinate system, the point on the first edge satisfies the function: y = Asin(ωx + φ) + k, where sin is the sine symbol, x is the value on the x-axis of the rectangular coordinate system, y is the y value corresponding to the function in the same rectangular coordinate system, k, ω and φ are constants (k, ω, φ∈R and ω≠0), and the corresponding parameters in the function can be calculated based on the horizontal arrangement period of the signal lines in the display panel and the horizontal arrangement period of the anodes. Therefore, the corresponding parameters are obtained according to the actual needs of the display panel, which will not be elaborated here.

[0054] Based on the arrangement period of the anodes in the horizontal direction, a design scheme of a reflective block including a first edge with a sinusoidal shape is provided. The distribution of the sinusoidal curve relative to the sub-pixel plane will be specifically described below in this embodiment.

[0055] For example, in some embodiments, the portion corresponding to the first edge of the gap between sub-pixels is shaped like a trough, and the reflective area of ​​the reflective block corresponding to the trough is minimized. Thus, by positioning the trough of the first edge of the reflective block relative to the sub-pixels, the sub-pixel arrangement period in the second direction can be effectively disrupted.

[0056] At the same time, based on the above scheme, considering that in actual production, there are many factors that affect the design of the display panel, such as product structure and performance requirements, processing technology and production costs, this embodiment also further designs the scheme of setting a valley in the sub-pixel gap to reduce the design difficulty of the display panel.

[0057] For example, in at least one embodiment, a trough is provided between each adjacent sub-pixel, and the reflective area of ​​the reflective block corresponding to the trough is the smallest. For another example, in at least one embodiment, the trough is provided on the perpendicular bisector of adjacent sub-pixels. In this way, the effective area corresponding to the reflective layer, i.e., the area that does not spatially overlap with the anode, is uniformly and symmetrically provided in the middle of the sub-pixel, which can effectively destroy the periodicity of the effective reflective area arrangement of the sub-pixels in the lateral direction. In addition, in at least one embodiment, the reflective block further includes a second edge extending along the second direction, and the shape of the second edge is a straight line or a figure that is axially symmetrical with the first edge. In this way, the design scheme of setting the second edge of the reflective block to be a straight line or a figure symmetrical with the first edge is conducive to the design and processing of the reflective block, saving the production cost of the display panel.

[0058] For example, continue to refer to Figure 5As can be seen, the display device includes multiple sub-pixels 310, including a first sub-pixel 310a, a second sub-pixel 310b, and a third sub-pixel 310c, each of which emits light of a different color. The reflective block 410 includes a second edge 414 opposite the first edge 413. The second edge 414 extends horizontally and perpendicular to the extension direction of the signal line 210, and the shape of the second edge 414 is a straight line. At the same time, there may be an intersection between the first edge 413 and the second edge 414, and there may also be no intersection, which is not limited here. In addition, among the sub-pixels 310 in the same row, the first edge 413 of the reflective block 410 corresponding to the gap between the adjacent first sub-pixel 310a and the third sub-pixel 310c includes a trough. The point on the first edge 413 at the trough is closest to the second edge 414, that is, the reflective area of ​​the reflective block 410 corresponding to this location is the smallest. Moreover, the point corresponding to the trough also falls on the perpendicular bisector of the line connecting the midpoints of the adjacent first sub-pixel 310 a and the third sub-pixel 310 c .

[0059] As can be seen from the above, the design scheme of providing reflective blocks in the display panel can effectively disrupt the horizontal periodicity of the anode arrangement. However, based on the design of the reflective blocks in the above scheme, the display panel still suffers from moiré patterns. Although these patterns have been reduced, they still have a negative impact on the display quality. Therefore, in this embodiment, the reflective layer is further designed to further improve or even eliminate the moiré patterns that occur in the display. The details are as follows.

[0060] In some embodiments, the reflective blocks include first and second reflective blocks arranged alternately in a first direction, with the second reflective blocks spaced apart and located within the gaps between the sub-pixels. The second reflective blocks positioned within the sub-pixel gaps, in conjunction with the first reflective blocks, can overlap in reflective area in the first direction, thereby more effectively disrupting the periodicity of the effective reflective area of ​​the sub-pixels in the second direction. Furthermore, within the same row, each second reflective block includes a first edge extending in the second direction, and the first edges of different second reflective blocks are shaped like at least portions of the same sine curve or a near-sine curve. In this manner, the second reflective blocks positioned within the sub-pixel gaps, in conjunction with the first reflective blocks, overlap in reflective area with the first reflective blocks in the longitudinal direction, thereby increasing the effective reflective area of ​​the reflective layer used to disrupt the lateral arrangement period of the anodes, thereby more effectively disrupting the lateral periodicity of the anodes.

[0061] For example, referring to Figure 7As shown in a plan view of a display panel 10, the reflective blocks 410 in the display panel 10 include first reflective blocks 411 and second reflective blocks 412 that cooperate with the first reflective blocks 411 to disrupt the transverse periodicity of the anode 311. The second reflective blocks 412 are arranged alternately with the first reflective blocks 411 in a first direction, i.e., longitudinally. In other words, a row of second reflective blocks 412 is provided between two longitudinally adjacent rows of first reflective blocks 411. Furthermore, based on the first reflective blocks 411 provided in the gap between the adjacent first and third sub-pixels 310a, 310c, second reflective blocks 412 are provided longitudinally of the third sub-pixel 310c. Each second reflective block 412 includes a transversely extending first edge 413b, with the shape of the first edge 413b being a sine curve or a portion approximately similar to a sine curve. What is important is that the shapes of the first edges 413 b of the second light reflecting blocks 412 in the same row or even all the second light reflecting blocks 412 are the same or different parts of the same sine curve.

[0062] In the layout design of the display panel, it is important to consider whether the newly added structural film layer has an adverse effect on the light extraction efficiency and effect of the display panel. Therefore, in this embodiment, the second reflective block is further designed based on this consideration.

[0063] For example, in some embodiments, during the second period, the portion of the first edge of the first reflective block located within the sub-pixel gap and the portion of the first edge of the second reflective block located within the sub-pixel gap form complementary patterns in the first direction, with the complementary patterns being at least a portion of a sinusoidal curve or a near-sinusoidal curve. For another example, in at least one embodiment, the complementary patterns are continuous sinusoidal curves or near-sinusoidal curves. Thus, after translating the second reflective block in the first direction, its first edge forms a continuous sinusoidal curve or a near-sinusoidal curve with the first edge of the first reflective block, effectively reducing or even eliminating the frequency of pixel arrangement cycles, even if the arrangement of the effective reflective areas of the sub-pixels in the second direction is non-periodic. Furthermore, by configuring the reflective layer as a repeating unit, the reflective layer can be designed to match the sub-pixel arrangement pattern, simplifying the design of the reflective layer.

[0064] For example, continue to refer to Figure 6 It can be seen that the first sub-pixel 310a, the second sub-pixel 310b and the third sub-pixel 310c form a pixel unit ( Figure 6(The dashed box in the figure represents a pixel unit). All pixel units are periodically arranged on the substrate 100. Therefore, each pixel unit includes a first reflective block 411 located between the first sub-pixel 310a and the third sub-pixel 310c, and a second reflective block 412 that cooperates with the first reflective block 411. Furthermore, within the same pixel unit, the second reflective block 412 and the first reflective block 411 do not spatially overlap. For the sub-pixels 310 equipped with the first reflective block 411, the portion corresponding to the first edge 413a of the first reflective block 411 between each adjacent sub-pixel 310 presents an image as a trough of a sinusoidal curve. The reflective area of ​​the first reflective block 411 corresponding to this trough is the smallest. For sub-pixels 310 equipped with second reflective blocks 412, the portion of the image corresponding to the first edge 413b of the second reflective block 412 between adjacent sub-pixels 310 presents a trough of a sinusoidal curve. The reflective area of ​​the second reflective block 412 corresponding to this trough is minimal. The first reflective block 411 and the second reflective block 412 further include second edges 414a and 414b, respectively, opposite their first edges 413a and 413b. The images presented by the second edges 414a and 414b are straight lines. More importantly, after the orthographic projection of the second reflective block 412 on the substrate 100 is moved in the longitudinal direction and then spliced ​​with the orthographic projection of the first reflective block 411 on the substrate 100, it can be clearly seen from the spliced ​​image that the first edge 413b of the second reflective block 412 and the first edge 413a of the first reflective block 411 form a continuous sine curve. In other words, the sine curve corresponding to the first edge 413b of the second reflective block 412 is the same as the sine curve corresponding to the first edge 413a of the first reflective block 411. In each longitudinal direction, the reflective area of ​​the anode 313 of the sub-pixel 310 is superimposed with the effective reflective area of ​​the corresponding first and second reflective blocks 411, 412. This effectively eliminates the lateral fluctuations in the superimposed effective reflective areas of different columns, further facilitating the elimination of periodicity in the arrangement of the anodes 313.

[0065] It should be understood that the shape of the first edge of the reflective block is not limited to the sinusoidal curve shown in the above example diagram; it can also be an approximate positive curve, such as a wavy line or a broken line. For example, if the second edge is a straight line, the interface diagram of the minimum repeating unit formed by the first and second edges can be a triangle, a near-triangle, a trapezoid, or a near-trapezoidal shape. Furthermore, the reflective areas of the second reflective blocks can be equal or unequal. All of the above can be designed based on the production process and requirements of the display panel and will not be elaborated here.

[0066] In order to simplify the production process of the display panel, in some embodiments, the first reflective block and the second reflective block are in the same layer. In this way, the first reflective block and the second reflective block can be manufactured simultaneously using the same process, thereby saving the production cost of the reflective layer.

[0067] In addition, there are multiple implementation plans for the planar structure of the reflective block and the position of the film layer in the thickness direction of the display panel. These implementation plans are described in detail below.

[0068] For example, in some embodiments, the shape of the first edge of the first reflective block is a continuous sine curve or a near-sine curve. In at least one embodiment, the first reflective block is located between the display function layer and the substrate. Furthermore, the first reflective block is located in the drive circuit layer. In this way, when the reflective layer and the reflective electrode are arranged on different layers, the design of the first reflective block does not need to consider avoiding the light-emitting area of ​​the sub-pixel, thereby reducing the difficulty of designing and producing the first reflective block.

[0069] For example, referring to Figure 6 It can be seen that each first reflective block 411 is a continuous long strip corresponding to multiple columns of sub-pixels, and the shape of the first edge 413a of the first reflective block 411 is a continuous sine curve. Figure 7 As can be seen, the reflective layer 400 is located between the second electrode, or cathode 313, and the substrate 100. Specifically, the reflective layer 400 is located between the drive circuit layer 200 and the display function layer 300; alternatively, the reflective layer 400 is located within the drive circuit layer 200. Thus, when the reflective layer 400 and the anode 311 are disposed on separate layers, there is no need to consider avoiding sub-pixels when designing the reflective block 410, thereby reducing the difficulty in designing and manufacturing the reflective block 410.

[0070] For example, in some other embodiments, the first reflective blocks are spaced apart and located within the gaps between sub-pixels. In at least one embodiment, the first reflective blocks are co-located with the reflective electrode. This arrangement of spaced-apart first reflective blocks minimizes the impact of the reflective layer on the light extraction efficiency of the display panel. Furthermore, co-locating the first reflective blocks with the reflective electrode facilitates achieving a thinner and lighter display panel.

[0071] For example, referring to Figure 8 It can be seen that each of the first light reflecting blocks 411 is spaced apart from each other, and each of the first light reflecting blocks 411 is located within the gap between the sub-pixels 310. Figure 9 It can be seen that the first light reflecting block 410 is in the same layer as the first electrode, ie, the anode 311. Furthermore, the light reflecting layer 400 can be integrally formed with the anode 311 using the same process and material, thereby saving the production cost of the display panel 10.

[0072] It should be understood that the above scheme and the figure only provide an exemplary scheme of providing a reflective layer in the display panel, and the reflective layer has an edge of a sinusoidal curve. The shape and parameters of the sinusoidal curves corresponding to the first reflective block and the second reflective block included in the reflective layer, as well as the number of corresponding troughs within the sub-pixel gap are not limited thereto. These can be selected according to the layout design and functional requirements of the display panel and will not be elaborated here.

[0073] Based on the above-mentioned design of the first and second reflective blocks, this embodiment will next specifically introduce the layout design of the first and second reflective blocks in combination with the array arrangement of sub-pixels in the display panel.

[0074] For example, in some embodiments, a display panel includes a plurality of sub-pixels classified into a first sub-pixel emitting light of a first color, a second sub-pixel emitting light of a second color, and a third sub-pixel emitting light of a third color, wherein the pixel area of ​​the first sub-pixel is larger than the pixel area of ​​the second sub-pixel, the pixel area of ​​the third sub-pixel is larger than the pixel area of ​​the second sub-pixel, and the second reflective block is disposed around the second sub-pixel. Thus, disposing the second reflective block around the second sub-pixel not only effectively utilizes the remaining space on the display panel layout and improves the integration of the display panel, but also facilitates the design and preparation of the second reflective block, thereby reducing the production cost of the display panel.

[0075] For example, Figure 6 As shown, the display panel 10 includes a first sub-pixel 310a that emits red light, a second sub-pixel 310b that emits green light, and a third sub-pixel 310c that emits blue light. Among the three sub-pixels 310 that emit light in three different wavelength ranges, the green light emitted by the second sub-pixel 310b, which emits light in the middle wavelength range, is more easily perceived by the human eye than the red light emitted by the first sub-pixel 310a and the blue light emitted by the third sub-pixel 310c. Therefore, without affecting the display quality of the display panel, the surface area of ​​the second sub-pixel 310b can be set to be smaller than the surface areas of the first sub-pixel 310a and the third sub-pixel 310c. Consequently, the remaining space around the second sub-pixel 310b is relatively large. Therefore, the second light-reflecting block 412 can be positioned around the second sub-pixel 310b, i.e., the green sub-pixel, specifically, within the gap between adjacent green sub-pixels.

[0076] Based on the above-mentioned design scheme that the display panel includes a reflective block, this embodiment also uses Fourier transform to analyze whether moiré patterns appear in the corresponding display panel. Figure 6As shown, the signal lines 210 of the display panel 10 have been compressed by 90%, and a reflective layer 400 is also provided in the display base 10. The following Fourier transform is performed on the horizontal arrangement period of the signal lines 210 on the display panel 10 and the horizontal arrangement period of the anode of the sub-pixel 310, respectively, to obtain Figure 6a and Figure 6b , where the horizontal axis represents frequency and the vertical axis represents signal strength. After superimposing the two and performing Fourier transform, we get Figure 6c , and refer to Figure 6c It can be seen that the signal intensity of the moiré pattern corresponds to a frequency signal of 0.44 / T2. By analyzing the frequency domain information of different Fourier curves, it can be determined that after the arrangement period of the signal lines 210 is compressed, the Fourier transform result of the superposition of the arrangement period of the signal lines 210 and the sub-pixels 310 does not contain any frequency less than 1 / T2, that is, no low-frequency signal that can be perceived by the human eye appears. This confirms that the first reflective block 411 and the second reflective block 412 prevent the display panel from producing moiré patterns in the displayed image and the reflected image.

[0077] An embodiment of the present application further provides a display device, which includes the display panel in any one of the above embodiments.

[0078] In at least one embodiment, the display device further includes a touch sensor, a touch chip, and a flexible circuit board for implementing touch control. To achieve a thinner and lighter touch display device, the touch sensor is disposed in the packaging layer of the display device, the touch chip is disposed on the flexible circuit board, and signals are transmitted to the touch sensor via touch signal lines.

[0079] In at least one embodiment, the display device can be any product or component with display and touch functions, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. The implementation of the display device can refer to the above-mentioned embodiment of the display panel, and the repeated parts are not repeated here.

[0080] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A display panel, characterized in that: include: substrate; a driving circuit layer, located on the substrate, comprising a plurality of signal lines, wherein the plurality of signal lines are located in a display area of ​​the display panel, extend along a first direction, and are arranged in parallel with a first period in a second direction intersecting the first direction; a display function layer, located on a side of the driving circuit layer away from the substrate, and comprising a plurality of sub-pixels, wherein the sub-pixels are arranged in parallel in the second direction at a second period different from the first period, and each of the sub-pixels comprises a reflective electrode disposed on the substrate; as well as The reflective layer is arranged on the substrate and includes a plurality of reflective blocks arranged in the second direction, and the plurality of reflective blocks are used to destroy the arrangement period of the effective reflective areas corresponding to the plurality of reflective electrodes in the second direction.

2. The display panel according to claim 1, wherein: The reflective block includes a first edge extending in the second direction, and the shape of the first edge is a sine curve or at least a portion of a sine curve.

3. The display panel according to claim 2, wherein: In the gap between the sub-pixels, the portion corresponding to the first edge is in the shape of a valley.

4. The display panel according to claim 3, wherein: One of the valleys is provided between each of the adjacent sub-pixels, and the reflective area of ​​the reflective block corresponding to the valley is the smallest.

5. The display panel according to claim 4, wherein: The valleys are arranged on perpendicular midlines of adjacent sub-pixels.

6. The display panel according to claim 2, wherein: The reflective block further includes a second edge extending along the second direction, and the shape of the second edge is a straight line or a figure that is axisymmetric with the first edge.

7. The display panel according to claim 2, wherein: The reflective blocks include first reflective blocks and second reflective blocks alternately arranged in the first direction, and the second reflective blocks are spaced apart from each other and located in the gaps between the sub-pixels.

8. The display panel according to claim 7, wherein: During the second period, the portion of the first edge of the first reflective block located within the sub-pixel gap and the portion of the first edge of the second reflective block located within the sub-pixel gap are complementary figures in the first direction, and the complementary figures are at least a portion of the sine curve or an approximate sine curve.

9. The display panel according to claim 8, wherein: The complementary figure is in the form of a continuous sine curve or a near sine curve.

10. The display panel according to claim 7, wherein: The shape of the first edge of the first reflective block is a continuous sine curve or an approximate sine curve.

11. The display panel according to claim 7, wherein: The first light reflecting block is located between the display function layer and the substrate.

12. The display panel according to claim 7, wherein: The first reflective block is located in the driving circuit layer.

13. The display panel according to claim 7, wherein: The first light reflecting blocks are spaced apart from each other and located in the gaps between the sub-pixels.

14. The display panel according to claim 7, wherein: The first light reflecting block and the reflective electrode are in the same layer.

15. The display panel according to claim 7, wherein: The first reflective block and the second reflective block are in the same layer.

16. The display panel according to any one of claims 7 to 15, wherein: The multiple sub-pixels are classified into a first sub-pixel that emits light of a first color, a second sub-pixel that emits light of a second color, and a third sub-pixel that emits light of a third color, and the pixel area of ​​the first sub-pixel is larger than the pixel area of ​​the second sub-pixel, the pixel area of ​​the third sub-pixel is larger than the pixel area of ​​the second sub-pixel, and the second reflective block is arranged around the second sub-pixel.

17. The display panel according to claim 1, wherein: At least two columns of the sub-pixels are arranged in one of the second periods, and the sum of the effective light-reflecting areas corresponding to the sub-pixels in each column is different.

18. A display device, characterized in that: include: The display panel according to any one of claims 1 to 17.

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