Display panel, display screen and electronic device

Abstract

The present disclosure relates to a display panel, a display screen and an electronic device, the display panel comprising a light-emitting layer comprising a plurality of light-emitting pixels; an encapsulation layer stacked with the light-emitting layer along a first direction; and a touch signal line disposed on a side of the encapsulation layer away from the light-emitting layer; wherein a projection of the touch signal line on the light-emitting layer along the first direction and a clearance distance between the touch signal line and a light-emitting pixel of a corresponding preset color are configured to decrease as a thickness of the encapsulation layer at a position of the light-emitting pixel of the preset color along the first direction decreases but at most to a preset value. Through the above technical solution, an included angle between a connection between the touch signal line and the light-emitting pixel of the preset color and the first direction can be adjusted, so that the touch signal line can be adapted to block light emission of the light-emitting pixel of the preset color at a large viewing angle, increase attenuation of the light-emitting pixel at the large viewing angle, and thus improve a color cast problem at the large viewing angle.

Description

Technical Field

[0001] This disclosure relates to the field of display device technology, and more specifically, to a display panel, a display screen, and an electronic device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) displays emit light through the principle of microcavity oscillation enhancement. At different viewing angles, due to the different degrees of attenuation of RGB (red, green, and blue) light-emitting pixels, different color shifts will appear. For example, when users use devices such as mobile phones or tablets equipped with OLED displays, the level of color shift is different at different viewing angles, which affects the user experience. Utility Model Content

[0003] The purpose of this disclosure is to provide a display panel, display screen, and electronic device that can improve color distortion problems.

[0004] To achieve the above objectives, according to a first aspect of this disclosure, a display panel is provided, comprising: The light-emitting layer includes multiple light-emitting pixels; An encapsulation layer, stacked with the light-emitting layer along a first direction; and The touch signal line is disposed on the side of the encapsulation layer opposite to the light-emitting layer; The avoidance distance between the projection of the touch signal line on the light-emitting layer along the first direction and the corresponding preset color light-emitting pixel is configured to decrease as the thickness of the encapsulation layer at the location of the preset color light-emitting pixel along the first direction decreases, but at most decreases to a preset value.

[0005] Through the above technical solution, the position of the touch signal line on the encapsulation layer changes as the thickness of the encapsulation layer decreases. This can be manifested as a reduction in the clearance distance between the projection of the touch signal line along the first direction onto the light-emitting layer and the light-emitting pixel of the corresponding preset color. This adjusts the angle between the line connecting the touch signal line and the light-emitting pixel of the preset color and the first direction, allowing the touch signal line to effectively block the light emitted by the light-emitting pixel of the preset color from the light emission at a wide viewing angle, increasing the attenuation of the light-emitting pixel at a wide viewing angle, thereby improving the color shift problem at a wide viewing angle.

[0006] In some possible implementations, the touch signal line includes a ring structure arranged circumferentially around the light-emitting pixels of the preset color, and the clearance distance is the distance between the projection of the ring structure onto the light-emitting layer along the first direction and the light-emitting pixel located inside the projection.

[0007] In this way, the ring structure can block the light emitted from the light-emitting pixel of the preset color from a wide viewing angle.

[0008] In some possible implementations, the distances between the projection of the annular structure at each position in the circumferential direction and the light-emitting pixels located inside the projection are all equal and are all the avoidance distances; or, The distance between the projection of the annular structure and the light-emitting pixel located inside the projection at various positions in the circumferential direction is at least partially unequal, and the avoidance distance is the minimum value of the distance between the projection of the annular structure and the light-emitting pixel located inside the projection.

[0009] This ensures that the touch signal line blocks the light emitted from the light-emitting pixels from a wide viewing angle, while minimizing the impact on the normal light emission from the light-emitting pixels from a narrow viewing angle.

[0010] In some possible implementations, the encapsulation layer has an edge region with varying thickness, wherein the thickness of the encapsulation layer is smaller closer to the edge of the encapsulation layer in the edge region; The light-emitting layer has an edge-emitting region corresponding to the edge region. In the edge-emitting region, the distance between the preset color light-emitting pixel and the projection of the touch signal line is smaller the closer to the edge of the light-emitting layer, but it is reduced to at most the preset value.

[0011] In this way, the avoidance distance can be determined through simulation and modeling, so as to determine the setting position of the touch signal line, thereby blocking the light emitted by the preset color luminous pixels in the edge area from a wide viewing angle and improving the color shift problem.

[0012] In some possible implementations, the encapsulation layer has a region of uniform thickness, in which the thickness of the encapsulation layer is equal at all locations, and the value of the avoidance distance corresponding to each preset color emitting pixel in the region of uniform thickness is greater than the value of the avoidance distance corresponding to each preset color emitting pixel in the edge region.

[0013] In this way, in areas of uniform thickness, the offset of the touch signal line toward the light-emitting pixels of the preset color can also improve the color shift problem, with the offset distance being greater than the avoidance distance.

[0014] In some possible implementations, the edge region is adjacent to the edge of the display panel and / or to an opening on the display panel.

[0015] In this way, the edge area is set at the open edge of the display panel, thus reducing the clearance distance in this edge area, which allows the touch signal line to cover the light-emitting pixels of the preset color to emit light from a wide viewing angle.

[0016] In some possible implementations, the display panel has an upper edge and a lower edge opposite each other along a second direction, and a left edge and a right edge opposite each other along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other; The edge region is arranged adjacent to at least one of the upper edge, the lower edge, the left edge, and the right edge.

[0017] In some possible implementations, the display panel has an opening extending through the display panel in a first direction, and the edge region is arranged adjacent to the opening.

[0018] In some possible implementations, along the direction in which the thickness of the encapsulation layer decreases, the angle between the line connecting the touch signal line and the light-emitting pixel and the first direction is equal or decreases; or, Along the direction in which the thickness of the encapsulation layer decreases, the angle between the line connecting the touch signal line and the light-emitting pixel and the first direction gradually decreases and then increases; or, the angle between the line connecting the touch signal line and the light-emitting pixel and the first direction is equal and then increases.

[0019] In this way, after obtaining a series of avoidance distances in the edge area through calculation and simulation, the avoidance distances are compared with preset values. The avoidance distances are all greater than the preset values. The angle between the line connecting the touch signal line and the light-emitting pixel in the edge area and the first direction can be equal to or less than the angle between the line connecting the touch signal line and the light-emitting pixel and the first direction in the area of ​​uniform thickness. If the avoidance distance is less than the preset value, the value of the avoidance distance that is less than the preset value needs to be adjusted to the preset value. Therefore, when the encapsulation layer thickness decreases and the avoidance distance remains unchanged, the angle between the line connecting the touch signal line and the light-emitting pixel and the first direction gradually increases.

[0020] In some possible implementations, the encapsulation layer includes a deposition layer and an inkjet printing layer disposed along the first direction, the inkjet printing layer having the edge region of the thickness variation.

[0021] The thickness variation in the edge region of the encapsulation layer is mainly caused by the thickness variation of the inkjet printing layer.

[0022] In some possible implementations, the avoidance distance is less than half the distance between the corresponding preset color luminescent pixel and any adjacent luminescent pixel.

[0023] In some possible implementations, the preset color light-emitting pixel is one of a green pixel, a red pixel, and a blue pixel.

[0024] Among them, green pixels have the best viewing angle stability. At wide viewing angles, their brightness decays the slowest, color shift is the smallest, and they can maintain relatively stable luminous intensity and color. However, the edge areas of the display panel show a severe green tint at wide viewing angles. This color shift problem in the edge areas can be improved by reducing the clearance between the touch signal line and the green pixels.

[0025] In some possible implementations, the plurality of light-emitting pixels are divided into a plurality of pixel groups arranged in rows along the second direction and columns along the third direction. Each pixel group includes a green pixel, a red pixel, and a blue pixel. The light-emitting pixel of the preset color is one of the green pixel, the red pixel, and the blue pixel. The first direction, the second direction, and the third direction are perpendicular to each other.

[0026] In some possible implementations, in the pixel group, the red pixel and the green pixel are arranged along a second direction, and the blue pixel is located on one side of the red pixel and the green pixel along a third direction.

[0027] According to a second aspect of this disclosure, a display screen is provided, including the display panel described above.

[0028] According to a third aspect of this disclosure, an electronic device is provided, including the aforementioned display screen.

[0029] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a partial structural diagram of a display panel provided in an exemplary embodiment of the present disclosure, wherein the light-emitting pixels are arranged in pixel groups; Figure 2 This is a partial structural diagram of a display panel provided in an exemplary embodiment of the present disclosure, wherein the light-emitting pixels are arranged adjacent to each other; Figure 3 This is a partial structural diagram of the touch signal line and the light-emitting pixels of the preset color provided in an exemplary embodiment of this disclosure; Figure 4 This is a partial cross-sectional view of the display panel along a first direction provided in an exemplary embodiment of this disclosure; Figure 5 This is a slice thickness curve of the encapsulation layer provided in an exemplary embodiment of this disclosure; Figure 6 This is a distribution diagram of the edge region of a display panel provided in an exemplary embodiment of this disclosure; Figure 7 This is another distribution diagram of the edge region of the display panel provided in the exemplary embodiments of this disclosure; Figure 8 It is a color deviation curve diagram of the OLED display touch signal line offset setting in related technologies.

[0031] Explanation of reference numerals in the attached figures 1. Emitting layer; 11. Emitting pixel; 111. Green pixel; 112. Red pixel; 113. Blue pixel; 12. Edge emitting area; 2. Encapsulation layer; 21. Edge area; 22. Area of ​​uniform thickness; 23. Deposition layer; 24. Inkjet printing layer; 3. Touch signal line; 31. Ring structure; D. Avoidance distance. Detailed Implementation

[0032] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0033] In this disclosure, unless otherwise stated, "inner" and "outer" refer to the interior and exterior of the outline of the corresponding component; "far" and "near" refer to the distance of the corresponding component relative to another component in terms of spatial position. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance. When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0034] The inventors discovered through research that OLED (Organic Light-Emitting Diode) displays exhibit a noticeable green tint at wide viewing angles. This issue can be mitigated by using light-blocking wiring along the touch signal lines. (Reference) Figure 8 As shown, for example, the touch signal line was originally located in the middle of the adjacent light-emitting pixels. By shifting it towards the direction of the G pixel, more of the G pixel is blocked, which can improve the problem of severe green tint in some areas of the display at large viewing angles. However, at the edge of the OLED display, the thickness of the OLED display encapsulation layer will gradually decrease. At this time, the distance between the touch signal line and the light-emitting pixel in the thickness direction of the encapsulation layer will decrease, the blocking effect will be weaker, and the green tint will still be severe at large viewing angles.

[0035] In order to at least partially solve the above problems, in accordance with the first aspect of this disclosure, reference is made to... Figures 1 to 7As shown, this disclosure provides a display panel including a light-emitting layer 1, an encapsulation layer 2, and a touch signal line 3. The light-emitting layer 1 includes a plurality of light-emitting pixels 11. The encapsulation layer 2 and the light-emitting layer 1 are stacked together along a first direction. The touch signal line 3 is disposed on the side of the encapsulation layer 2 away from the light-emitting layer 1. The clearance distance D between the projection of the touch signal line 3 onto the light-emitting layer 1 along the first direction and the corresponding preset color light-emitting pixel 11 is configured to decrease as the thickness of the encapsulation layer 2 at the location of the preset color light-emitting pixel 11 decreases along the first direction, but at most decreases to a preset value.

[0036] The first direction can be referenced. Figure 3 In the direction shown by X, the light-emitting layer 1, the encapsulation layer 2, and the touch signal line 3 are stacked in the first direction.

[0037] Through the above technical solution, the position of the touch signal line 3 on the encapsulation layer 2 changes as the thickness of the encapsulation layer 2 decreases. This can be manifested as a decrease in the clearance distance D between the projection of the touch signal line 3 on the light-emitting layer 1 along the first direction and the light-emitting pixel 11 of the corresponding preset color. This adjusts the angle between the line connecting the touch signal line 3 and the light-emitting pixel 11 of the preset color and the first direction, so that the touch signal line 3 can be adapted to block the light emission of the light-emitting pixel 11 of the preset color from the light emission at a wide viewing angle, increasing the attenuation of the light-emitting pixel 11 at a wide viewing angle, thereby improving the color shift problem at the edge part at a wide viewing angle.

[0038] It is understandable that the thickness of the encapsulation layer 2 gradually decreases at the edges. Therefore, if the clearance distance D remains constant, and the angle between the line connecting the touch signal line 3 and the preset color emitting pixel 11 and the first direction is too large, the touch signal line 3 may lose its ability to block the light emission of the preset color emitting pixel 11 at a wide viewing angle, and the color shift problem at the edges at a wide viewing angle remains unresolved. Therefore, by reducing the clearance distance D as the thickness of the encapsulation layer 2 decreases, compared to the case where the clearance distance D remains constant, the angle between the line connecting the touch signal line 3 and the preset color emitting pixel 11 and the first direction can be reduced. This maintains the blocking effect of the touch signal line 3 on the light emission of the preset color emitting pixel 11 at a wide viewing angle, improving the color shift problem at the edges at a wide viewing angle.

[0039] Wherein, the first direction is perpendicular to the plane where the light-emitting layer 1 is located. The distance between the projection of the touch signal line 3 along the first direction on the light-emitting layer 1 and the corresponding preset color light-emitting pixel 11 can be the distance between the projection and the edge of the light-emitting pixel 11, or the distance between the projection and the center of the light-emitting pixel 11. This disclosure is not limited to this. As long as the distance between the projection of the touch signal line 3 along the first direction on the light-emitting layer 1 and the corresponding preset color light-emitting pixel 11 is measured by the same standard.

[0040] For example, refer to Figure 3 As shown in the figure, S represents the clearance distance D, and H represents the thickness of the encapsulation layer 2. The encapsulation layer 2 may include a deposition layer 23 and an inkjet printing layer 24 (which will be described in detail later) disposed along the first direction. The thickness variation of the encapsulation layer 2 is mainly caused by the thickness variation of the inkjet printing layer 24.

[0041] It is understandable that deviations may occur during the assembly process of the display panel. For example, when the touch signal line 3 is placed on the encapsulation layer 2, if the distance between the projection of the touch signal line 3 along the first direction onto the light-emitting layer 1 and the corresponding preset color light-emitting pixel 11 is less than a preset value, due to assembly process deviations, the touch signal line 3 may block the light emission of the preset color light-emitting pixel 11 at a small viewing angle, thereby affecting the light emission effect of the display panel. Therefore, the distance between the projection of the touch signal line 3 along the first direction onto the light-emitting layer 1 and the corresponding preset color light-emitting pixel 11 is not less than a critical threshold. This critical threshold is designed as a preset value and can be adaptively selected and set according to the actual assembly process. This disclosure does not specifically limit it.

[0042] Multiple luminous pixels 11 can be arranged in any suitable manner.

[0043] For example, in some possible implementations, refer to Figure 1 As shown, exemplarily, multiple light-emitting pixels 11 are divided into multiple pixel groups arranged in rows along a second direction and columns along a third direction. Each pixel group includes a green pixel 111, a red pixel 112, and a blue pixel 113. The light-emitting pixel 11 of a preset color is one of the green pixel 111, red pixel 112, and blue pixel 113. The first direction, the second direction, and the third direction are perpendicular to each other. In the pixel group, the red pixel 112 and the green pixel 111 are arranged along the second direction, and the blue pixel 113 is located on one side of the red pixel 112 and the green pixel 111 along the third direction. In this way, each pixel group has three complete sub-pixels, which can precisely control the light emission intensity of the sub-pixels and reduce jagged edges. In addition, it can also simplify the driving circuit and achieve better energy efficiency management. The second direction can be referred to as... Figure 1 The direction shown in Y is used as a reference for the third direction. Figure 1 The direction indicated by Z in the middle.

[0044] Alternatively, in another implementation, refer to Figure 2 As shown, the plurality of luminescent pixels 11 include green pixels 111, red pixels 112, and blue pixels 113, along the second direction (e.g., Figure 2 In the vertical direction of the image, red pixel 112 and blue pixel 113 can be arranged alternately along a third direction (such as...). Figure 2(In the left and right direction of the middle image), blue pixels 113 and red pixels 112 can be arranged alternately in sequence, and green pixels 111 are set in the area enclosed by two adjacent red pixels and two adjacent blue pixels.

[0045] In some possible implementations, refer to Figure 1 As shown, the touch signal line 3 may include an annular structure 31 arranged circumferentially around the light-emitting pixel 11 of the preset color. In this way, the annular structure 31 can block the light emitted from a wide viewing angle in the circumference of the light-emitting pixel 11 of the preset color.

[0046] In some exemplary application scenarios, the display panel can be used to assemble a display screen for use in electronic devices. Thus, when a user uses an electronic device and observes the display screen from various directions, the touch signal line 3 can block the light emitted from the preset color light-emitting pixel 11 from a wide viewing angle, thereby improving the color shift problem and enhancing the quality of the light-emitting display.

[0047] Wherein, the aforementioned avoidance distance D is the distance between the projection of the annular structure 31 on the light-emitting layer 1 along the first direction and the light-emitting pixel 11 located inside the projection. The avoidance distance D decreases as the thickness of the encapsulation layer 2 decreases, but at most decreases to a preset value.

[0048] For example, such as Figure 1 As shown, the projection of the light-emitting pixel 11 onto the light-emitting layer 1 along the first direction is a rectangle. This ensures that the distance between the projection of the ring structure 31 at each position in the circumferential direction and the light-emitting pixel 11 located inside the projection is equal and is a clearance distance D.

[0049] Alternatively, in some other possible implementations, refer to Figure 2 As shown, the light-emitting pixel 11 can be constructed as a rod, or the projection of the light-emitting pixel 11 onto the light-emitting layer 1 along the first direction is elliptical. In this case, to facilitate the arrangement of the touch signal line 3, the projection of the annular structure 31 onto the light-emitting layer 1 along the first direction is rectangular. The distance between the projection of the annular structure 31 and the light-emitting pixel 11 located inside the projection at various positions in the circumferential direction is at least partially unequal, and the avoidance distance D is the minimum value of the distance between the projection of the annular structure 31 and the light-emitting pixel 11. Therefore, the blocking effect of the touch signal line 3 on the light emission of the light-emitting pixel 11 from a large viewing angle can be ensured, while minimizing the impact on the normal light emission of the light-emitting pixel 11 from a small viewing angle. This disclosure is not limited to this.

[0050] In some possible implementations, to adapt to borderless or narrow-edge requirements, optimize and adapt the packaging technology, improve the optical performance of the edges, and control costs, the packaging layer 2 has an edge region 21 with varying thickness. Within the edge region 21, the thickness of the packaging layer 2 decreases as it approaches the edge. The light-emitting layer 1 has an edge-emitting region 12 corresponding to the edge region 21. Within the edge-emitting region 12, the clearance distance D between the preset-color light-emitting pixel 11 and the projection of the touch signal line 3 decreases as it approaches the edge of the light-emitting layer 1, but at most decreases to a preset value.

[0051] Furthermore, the encapsulation layer 2 has a uniform thickness region 22, in which the thickness of the encapsulation layer 2 is equal at all locations. For example, referring to... Figure 4 and Figure 5 As shown, the thickness variation of the encapsulation layer 2 can be obtained through sampling and slicing measurements. Based on this, the inflection point of the thickness variation is designed as the boundary between the uniform thickness region 22 and the edge region 21. The thickness of the encapsulation layer 2 in the uniform thickness region 22 is greater than that in the edge region 21. Therefore, the avoidance distance D corresponding to each preset color light-emitting pixel 11 in the uniform thickness region 22 is greater than the avoidance distance D corresponding to each preset color light-emitting pixel 11 in the edge region 21. Here, "equal thickness" means that the thickness of the encapsulation layer 2 is equal at all points in the uniform thickness region 22 within the allowable manufacturing error range.

[0052] It is understood that the edge region 21 is located at the open edge of the display panel, and in some possible implementations, refer to Figure 6 As shown, the display panel has an upper edge and a lower edge opposite each other along a second direction, and a left edge and a right edge opposite each other along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The edge region 21 is arranged adjacent to at least one of the upper edge, the lower edge, the left edge, and the right edge. Exemplarily, the edge region 21 can be arranged around the circumferentially outside the uniform thickness region 22, that is, the edge region 21 can be arranged adjacent to the upper edge, the lower edge, the left edge, and the right edge. Therefore, as it moves away from the uniform thickness region 22, the thickness of the encapsulation layer 2 of the edge region 21 gradually decreases, and the value of the clearance distance D between the preset color light-emitting pixel 11 and the projection of the touch signal line 3 gradually decreases.

[0053] refer to Figure 7 As shown, it can be understood that the color shift problem is more severe at the upper and lower edges of the display panel due to the reduced thickness of the encapsulation layer 2. Therefore, the edge region 21 can be arranged adjacent to the upper and lower edges. This disclosure is not limited thereto.

[0054] Alternatively, in some other possible implementations, the display panel has an opening extending through the display panel in a first direction, with the edge region 21 arranged adjacent to the opening. For example, when the display panel is used as a mounting display, the opening can be used to avoid a camera, in which case the edge region 21 can be adjacent to the opening on the display panel. Thus, as the edge region 21 moves away from the uniform thickness region 22 and closer to the opening, the thickness of the encapsulation layer 2 of the edge region 21 gradually decreases, and the value of the avoidance distance D between the preset color light-emitting pixel 11 and the projection of the touch signal line 3 gradually decreases.

[0055] For example, the aforementioned avoidance distance D can be obtained through calculation and simulation. For instance, based on the results of the above-mentioned slicing sampling, a region of equal thickness 22 and an edge region 21 can be divided, and the distribution of the light-emitting pixels 11 in the region of equal thickness 22 and the edge region 21 can be determined based on the spacing between adjacent light-emitting pixels 11. For example, the light-emitting pixels 11 can be arranged in rows and columns. Thus, a light-emitting pixel 11 of a preset color close to the region of equal thickness 22 in the edge region 21 is selected. The thickness of the encapsulation layer 2 and the avoidance distance D are input. Through calculation and simulation, the light-blocking effect of the touch signal line 3 on the light-emitting pixel 11 of the preset color in the region of equal thickness 22 is compared. By repeatedly correcting and comparing the input value of the avoidance distance D, the final avoidance distance D is obtained. The above process is repeated to determine the setting position of the touch signal line 3 for the light-emitting pixel 11 of the preset color in the edge region 21, so as to block the light emitted by the light-emitting pixel 11 of the preset color in the edge region 21 from a large viewing angle and improve the color shift problem.

[0056] It is understood that the light-blocking effect of the touch signal line 3 on the preset color luminous pixel 11 within the uniform thickness region 22, and the comparison with the light-blocking effect of the touch signal line 3 on the preset color luminous pixel 11 within the edge region 21, can be referenced to the color deviation curve. Furthermore, the above calculations and simulations can be implemented, for example, by computer algorithms, programs, and software; the specific calculation and simulation processes will not be elaborated upon here.

[0057] After calculating and simulating a series of avoidance distances D within the edge region 21, the avoidance distances D are compared with preset values. In some possible implementations, the avoidance distances D are all greater than the preset values. Thus, along the direction of decreasing thickness of the encapsulation layer 2, the angle between the line connecting the touch signal line 3 and the light-emitting pixel 11 and the first direction is equal or decreases. It can be understood that the angle between the line connecting the touch signal line 3 and the light-emitting pixel 11 and the first direction within the edge region 21 can be smaller than, or equal to, the angle between, the line connecting the touch signal line 3 and the light-emitting pixel 11 and the first direction within the uniform thickness region 22.

[0058] Alternatively, in some other possible implementations, the partial avoidance distance D is less than a preset value. In this case, along the direction in which the thickness of the encapsulation layer 2 decreases, the angle between the line connecting the touch signal line 3 and the light-emitting pixel 11 and the first direction gradually decreases and then increases. It is understood that the value of this partial avoidance distance D, which is less than the preset value, needs to be adjusted to the preset value. Therefore, when the thickness of the encapsulation layer 2 decreases and the avoidance distance D remains constant, the angle between the line connecting the touch signal line 3 and the light-emitting pixel 11 and the first direction gradually increases. Similarly, when the avoidance distance D is greater than the preset value, the angle between the line connecting the touch signal line 3 and the light-emitting pixel 11 and the first direction in the edge region 21 can be less than, or equal to, the angle between, the line connecting the touch signal line 3 and the light-emitting pixel 11 and the first direction in the region of uniform thickness 22.

[0059] It is understandable that, in the uniform thickness region 22, to improve the color shift problem, the projection of the touch signal line 3 onto the light-emitting layer 1 along the first direction is close to the light-emitting pixel 11 of the preset color, so that the distance between the projection and the light-emitting pixel 11 of the preset color is less than half the distance between the projection and any adjacent light-emitting pixel 11. Thus, in some possible implementations, referring to... Figure 1 As shown, the avoidance distance D is less than half the distance between the corresponding preset color luminous pixel 11 and any adjacent luminous pixel 11.

[0060] In some possible implementations, refer to Figure 3 and Figure 4 As shown, the encapsulation layer 2 includes a deposition layer 23 and an inkjet-printed layer 24 disposed along a first direction. The inkjet-printed layer 24 forms an edge region 21 with varying thickness. The inkjet-printed layer 24 has deposition layers 23 disposed on opposite sides along the first direction. The inkjet-printed layer 24 is a film layer prepared by IJP (Inkjet Printing), whose core advantages are high material utilization, low cost, and adaptability to flexibility and large sizes. It is mainly used for constructing organic functional layers in display panels, enabling precise definition of the light-emitting pixels 11 and optimization of light-emitting performance.

[0061] The deposition layer 23 can be prepared by CVD (Chemical Vapor Deposition) process. Its core advantages are dense film formation, high uniformity, and low temperature process compatibility. It is mainly used for the construction of inorganic functional layers in display panels and can effectively block water vapor and oxygen penetration.

[0062] In some possible implementations, the preset color luminescent pixel 11 is one of a green pixel 111, a red pixel 112, and a blue pixel 113. This disclosure exemplarily sets the preset color luminescent pixel 111 to a green pixel 111. It is understood that due to the inherent characteristics of the luminescent materials, the green pixel 111 has the best viewing angle stability; at wide viewing angles, its brightness decays the slowest, its color shift is minimal, and it can maintain relatively stable luminous intensity and color. Thus, the edge area 21 of the display panel exhibits a severe green tint at wide viewing angles. By reducing the clearance distance D between the touch signal line 3 and the green pixel 111, the color shift problem in the edge area 21 can be improved.

[0063] According to a second aspect of this disclosure, a display screen is provided, including the display panel described above. The display screen has all the beneficial effects of the aforementioned display panel, which will not be elaborated further herein. Exemplarily, the display screen may be an OLED (Organic Light-Emitting Diode) display screen.

[0064] According to a third aspect of this disclosure, an electronic device is provided, including the aforementioned display screen. The electronic device has all the beneficial effects of the aforementioned display screen; exemplarily, the electronic device may be a mobile phone or a tablet. This disclosure is not limited thereto.

[0065] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0067] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A display panel, characterized in that, include: The light-emitting layer includes multiple light-emitting pixels; An encapsulation layer is stacked with the light-emitting layer along a first direction; as well as The touch signal line is disposed on the side of the encapsulation layer opposite to the light-emitting layer; The avoidance distance between the projection of the touch signal line on the light-emitting layer along the first direction and the corresponding preset color light-emitting pixel is configured to decrease as the thickness of the encapsulation layer at the location of the preset color light-emitting pixel along the first direction decreases, but at most decreases to a preset value.

2. The display panel according to claim 1, characterized in that, The touch signal line includes a ring structure arranged circumferentially around the light-emitting pixels of the preset color, and the avoidance distance is the distance between the projection of the ring structure onto the light-emitting layer along the first direction and the light-emitting pixel located inside the projection.

3. The display panel according to claim 2, characterized in that, The distance between the projection of the annular structure and the light-emitting pixel located inside the projection at all positions in the circumferential direction is equal and is always the avoidance distance; or... The distance between the projection of the annular structure and the light-emitting pixel located inside the projection at various positions in the circumferential direction is at least partially unequal, and the avoidance distance is the minimum value of the distance between the projection of the annular structure and the light-emitting pixel located inside the projection.

4. The display panel according to claim 1, characterized in that, The encapsulation layer has an edge region with varying thickness, where the thickness of the encapsulation layer is smaller closer to the edge of the encapsulation layer. The light-emitting layer has an edge-emitting region corresponding to the edge region. In the edge-emitting region, the distance between the preset color light-emitting pixel and the projection of the touch signal line is smaller the closer to the edge of the light-emitting layer, but it is reduced to at most the preset value.

5. The display panel according to claim 4, characterized in that, The encapsulation layer has a region of uniform thickness, in which the thickness of the encapsulation layer is equal at all locations. The value of the avoidance distance corresponding to each preset color light-emitting pixel in the region of uniform thickness is greater than the value of the avoidance distance corresponding to each preset color light-emitting pixel in the edge region.

6. The display panel according to claim 4, characterized in that, The edge region is adjacent to the edge of the display panel and / or to an opening on the display panel.

7. The display panel according to claim 4, characterized in that, The display panel has an upper edge and a lower edge opposite each other along a second direction, and a left edge and a right edge opposite each other along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other; The edge region is arranged adjacent to at least one of the upper edge, the lower edge, the left edge, and the right edge.

8. The display panel according to claim 4, characterized in that, The display panel has an opening extending through the display panel along a first direction, and the edge region is arranged adjacent to the opening.

9. The display panel according to claim 4, characterized in that, Along the direction in which the thickness of the encapsulation layer decreases, the angle between the line connecting the touch signal line and the light-emitting pixel and the first direction is equal to or decreases; or, Along the direction in which the thickness of the encapsulation layer decreases, the angle between the line connecting the touch signal line and the light-emitting pixel and the first direction gradually decreases and then increases; or, the angle between the line connecting the touch signal line and the light-emitting pixel and the first direction is equal and then increases.

10. The display panel according to claim 4, characterized in that, The encapsulation layer includes a deposition layer and an inkjet printing layer disposed along the first direction, wherein the inkjet printing layer forms an edge region with the thickness variation.

11. The display panel according to claim 1, characterized in that, The avoidance distance is less than half the distance between the corresponding preset color luminous pixel and any adjacent luminous pixel.

12. The display panel according to claim 1, characterized in that, The preset color of the luminous pixel is one of green, red, and blue pixels.

13. The display panel according to claim 1, characterized in that, The plurality of light-emitting pixels are divided into a plurality of pixel groups arranged in rows along the second direction and in columns along the third direction. Each pixel group includes a green pixel, a red pixel and a blue pixel. The light-emitting pixel of the preset color is one of the green pixel, the red pixel and the blue pixel. The first direction, the second direction and the third direction are perpendicular to each other.

14. The display panel according to claim 13, characterized in that, In the pixel group, the red pixel and the green pixel are arranged along a second direction, and the blue pixel is located on one side of the red pixel and the green pixel along a third direction.

15. A display screen, characterized in that, Includes the display panel described in any one of claims 1-14.

16. An electronic device, characterized in that, Includes the display screen as described in claim 15.

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