Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate; the plurality of repetitive units are arranged on the substrate, each repetitive unit comprises a plurality of sub-pixels, and the plurality of sub-pixels comprise a first color sub-pixel, a second color sub-pixel and a third color sub-pixel; the touch wires are arranged on the sides, away from the substrate, of the sub-pixels, the touch wires are distributed in a net shape and provided with a plurality of meshes, the meshes correspond to the sub-pixels in a one-to-one mode, and orthographic projections of the sub-pixels on the substrate are located in orthographic projection areas of the corresponding meshes on the substrate; in each repetitive unit, the distance between the touch wire between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than the distance between the touch wire and the second color sub-pixel; and / or, the distance between the touch control wire between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than the distance between the touch control wire between the first color sub-pixel and the third color sub-pixel.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Organic light-emitting diodes (OLEDs), also known as organic light-emitting diodes, have great development potential in the display field due to their advantages of lightness, high color saturation, active light emission, fast display speed, and power saving. Currently, their commercial applications are mostly used in mobile display terminals and other aspects. With the development of commercialization, the market's performance requirements for OLED products are also further improved. For example, color deviation is one of the characteristics that directly affects consumers' experience of electronic products. Researchers are also keen on how to reduce the color difference of white light under large viewing angles (such as greater than 45°).

[0003] The color deviation of OLED products is affected by the superposition of the intrinsic spectrum of the luminescent material and the microcavity spectrum of the device, which is ultimately directly reflected in the brightness difference of the RGB light under the viewing angle, resulting in a large difference between white light and the normal viewing angle. In the early days of OLED products, the visual effect was severely bluish when the viewing angle tended to be large. With the continuous improvement of market requirements and the iteration of luminescent materials of display manufacturers, the color deviation characteristics of OLED products have been continuously optimized. However, optimizing color deviation by replacing luminescent materials has high development costs and long cycles. Therefore, there is still much room for improvement in improving the color deviation effect of OLED products. Summary of the invention

[0004] Embodiments of the present invention provide a display panel and a display device, which are used to solve the problem of how to improve the color deviation of the viewing angle of OLED products at a low cost.

[0005] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0006] In a first aspect, an embodiment of the present invention provides a display panel, including:

[0007] substrate substrate;

[0008] A plurality of repeating units are arranged on the base substrate, each of the repeating units includes a plurality of sub-pixels, and the plurality of sub-pixels include: a first color sub-pixel, a second color sub-pixel and a third color sub-pixel;

[0009] A touch line is arranged on a side of the sub-pixel away from the base substrate, the touch line is distributed in a mesh shape and has a plurality of mesh holes, the mesh holes correspond to the sub-pixels one by one, and the orthographic projection of the sub-pixel on the base substrate is located within the orthographic projection area of ​​the corresponding mesh hole on the base substrate;

[0010] Wherein, in each of the repeating units:

[0011] A distance between a touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the second color sub-pixel;

[0012] and / or,

[0013] A distance between a touch control line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than a distance between the touch control line and the third color sub-pixel.

[0014] Optionally, within each of the repeating units and between adjacent repeating units:

[0015] A distance between a touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the second color sub-pixel;

[0016] and / or,

[0017] A distance between a touch control line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than a distance between the touch control line and the third color sub-pixel.

[0018] Optionally, when a distance between a touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the second color sub-pixel, a difference between a distance between the touch line and the second color sub-pixel and a distance between the touch line and the first color sub-pixel is greater than or equal to 1 μm;

[0019] and / or,

[0020] When the touch routing located between the first color sub-pixel and the third color sub-pixel is at a distance less than the first color sub-pixel, the difference between the distance between the touch routing and the third color sub-pixel and the distance between the touch routing and the first color sub-pixel is greater than or equal to 1 μm.

[0021] Optionally, a distance between a touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the second color sub-pixel;

[0022] The distance between the touch line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is equal to the distance between the touch line and the third color sub-pixel.

[0023] Optionally, a distance between a touch line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the third color sub-pixel;

[0024] The distance between the touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is equal to the distance between the touch line and the second color sub-pixel.

[0025] Optionally, each of the repeating units includes four sub-pixels, and the four sub-pixels include: two of the first color sub-pixels, one of the second color sub-pixel and one of the third color sub-pixels. The four sub-pixels are arranged in three rows and three columns, and the two of the first color sub-pixels are located in the same row and different columns, and the second color sub-pixel and the third color sub-pixel are located in different rows and the same column.

[0026] Optionally, the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a blue sub-pixel.

[0027] Optionally, the touch line width is 2-6 μm.

[0028] Optionally, the line width of the touch line is greater than a preset threshold.

[0029] Optionally, the preset threshold is 6 μm.

[0030] In a second aspect, an embodiment of the present invention provides a display device, comprising the display panel as described in the first aspect.

[0031] In an embodiment of the present invention, in each repeating unit, the distance between the touch routing between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than the distance between the touch routing between the first color sub-pixel and the third color sub-pixel, and / or the distance between the touch routing between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than the distance between the touch routing between the first color sub-pixel and the third color sub-pixel. Through the above arrangement, the touch routing is closer to the first color sub-pixel, thereby reducing the light output brightness of the first color sub-pixel at a wide viewing angle, and increasing the light output brightness of the second color sub-pixel and / or the third color sub-pixel, so as to adjust the light output brightness ratio of each sub-pixel at a wide viewing angle, improve the color deviation effect at a wide viewing angle, and only need to adjust the position of the touch routing, so the cost is low and mass production is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0033] Figure 1 is a schematic diagram of the structure of a display panel in the related art;

[0034] Figure 2 A schematic diagram of the line width of a touch line and the distance between the touch line and a sub-pixel in the related art;

[0035] Figure 3 is a schematic structural diagram of a display panel according to a first embodiment of the present invention;

[0036] Figure 4 for Figure 3 A schematic structural diagram of a repeating unit of a display panel shown;

[0037] Figure 5 is a schematic structural diagram of a display panel according to a second embodiment of the present invention;

[0038] Figure 6 for Figure 5 A schematic structural diagram of a repeating unit of a display panel shown;

[0039] Figure 7 is a schematic structural diagram of a display panel according to a third embodiment of the present invention;

[0040] Figure 8 for Figure 7 A schematic structural diagram of a repeating unit of a display panel shown;

[0041] Fig. 9 A schematic diagram of an arrangement of sub-pixels of a repeating unit according to an embodiment of the present invention;

[0042] Fig.10 A schematic diagram of a widened touch line according to an embodiment of the present invention;

[0043] Fig.11 A schematic diagram comparing color shift trajectories of a display panel according to an embodiment of the present invention and a conventional display panel;

[0044] Fig.12 A schematic diagram comparing color shift trajectories of a display panel according to another embodiment of the present invention and a conventional display panel;

[0045] Fig.13 A schematic diagram comparing color shift trajectories of a display panel according to another embodiment of the present invention and a conventional display panel;

[0046] Fig.14 A schematic diagram showing the comparison of the white light viewing angle and the brightness changes of each single color corresponding to the offset of the touch line;

[0047] Fig.15 A schematic diagram of the distance between the touch wiring and the sub-pixel of an existing display panel;

[0048] Fig.16 A schematic diagram of the distance between the touch line and the sub-pixel after the touch line is offset;

[0049] Fig.17 A schematic diagram showing a comparison of color deviation tracks of each display panel after the touch wiring is shifted and an existing display panel;

[0050] Fig.18 A schematic diagram of simulation results of touch routing according to an embodiment of the present invention;

[0051] Fig.19 Schematic diagram of the measured color deviation trajectory of two types of display panels after touch line adjustment;

[0052] Fig. 20 FIG. 4 is a cross-sectional view of a display panel according to an embodiment of the present invention. DETAILED DESCRIPTION

[0053] The following will be combined with the 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 described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Please refer to Figure 1 , Figure 1 It is a structural diagram of a display panel in the related art. The display panel 10 includes a plurality of sub-pixels 11 (red sub-pixels, green sub-pixels and blue sub-pixels) and touch wiring 12. The touch wiring 12 is arranged on the sub-pixels 11 in a mesh arrangement.

[0055] Please refer to Figure 2 , Figure 2 FIG. 1 is a schematic diagram of the line width of the touch line and the distance between the touch line and the sub-pixel in the related art. Figure 2 It can be seen that the width of the touch line is b, and the distance between the adjacent sub-pixels is a. In this structure, the touch line is located in the middle of the adjacent sub-pixels, and the distance between each adjacent sub-pixel is the same. In this structure, the color bias of the display panel is affected by the superposition of the intrinsic spectrum of the luminescent material and the microcavity spectrum of the device, which is ultimately directly reflected in the brightness difference of the red sub-pixel, green sub-pixel and blue sub-pixel under the viewing angle, resulting in a large difference in the chromaticity of white light and the normal viewing angle.

[0056] To solve the above problems, please refer to Figure 3 and Figure 4 , Figure 3 is a schematic structural diagram of a display panel according to Embodiment 1 of the present invention, Figure 4 for Figure 3 A schematic structural diagram of a repeating unit of a display panel shown in FIG. 1 , wherein the display panel comprises:

[0057] Base substrate (not shown);

[0058] Multiple repeating units ( Figure 3 The area framed by the dotted line is a repeating unit), which is arranged on the substrate, and each of the repeating units includes a plurality of sub-pixels 21 ( Figure 3 and Figure 4 In the illustrated embodiment, one repeating unit includes four sub-pixels), and the plurality of sub-pixels 21 include: a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel;

[0059] A touch line 22 is arranged on a side of the sub-pixel 21 away from the base substrate. The touch line 22 is distributed in a mesh shape and has a plurality of mesh holes. The mesh holes correspond to the sub-pixels 21 one by one. The orthographic projection of the sub-pixel 21 on the base substrate is located within the orthographic projection area of ​​the corresponding mesh hole on the base substrate.

[0060] Wherein, in each of the repeating units: the distance between the touch wiring 22 located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than the distance between the touch wiring 22 and the second color sub-pixel.

[0061] Figure 3 and Figure 4 In the illustrated embodiment, assuming that the first color sub-pixel is a green sub-pixel (G), the second color sub-pixel is a red sub-pixel (R), and the third color sub-pixel is a blue sub-pixel (B), within each of the repeating units, the touch line 22 located between the green sub-pixel and the red sub-pixel has a distance from the green sub-pixel (such as a-x1) that is smaller than the distance from the red sub-pixel (such as a+x1).

[0062] In this embodiment, the first color sub-pixel is a green sub-pixel and the second color sub-pixel is a red sub-pixel. In some other embodiments of the present invention, the first color sub-pixel may also be a red sub-pixel or a blue sub-pixel, and the second color sub-pixel may also be a green sub-pixel or a blue sub-pixel.

[0063] In an embodiment of the present invention, in each repeating unit, the distance between the touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than the distance between the touch line and the second color sub-pixel. Through the above arrangement, the touch line is closer to the first color sub-pixel, thereby reducing the light output brightness of the first color sub-pixel at a wide viewing angle, and increasing the light output brightness of the second color sub-pixel, so as to adjust the light output brightness ratio of each sub-pixel at a wide viewing angle, improve the color deviation effect at a wide viewing angle, and only need to adjust the position of the touch line, so the cost is low and mass production is high.

[0064] Figure 3 and Figure 4 In the illustrated embodiment, the distance between the touch line 22 located between the first color sub-pixel (such as the green sub-pixel) and the second color sub-pixel (such as the red sub-pixel) and the first color sub-pixel is smaller than the distance between the touch line 22 and the second color sub-pixel; the distance between the touch line 22 located between the first color sub-pixel (such as the green sub-pixel) and the third color sub-pixel (such as the blue sub-pixel) and the first color sub-pixel (such as a) is equal to the distance between the touch line 22 and the third color sub-pixel (such as a). In other words, only the touch line between the red sub-pixel and the green sub-pixel is offset toward the green sub-pixel, while the touch line between the blue sub-pixel and the green sub-pixel is not offset toward the green sub-pixel. This offset mode is also called unidirectional offset.

[0065] Please refer to Figure 5 and Figure 6 , Figure 5 is a schematic structural diagram of a display panel according to a second embodiment of the present invention, Figure 6 for Figure 5 A schematic structural diagram of a repeating unit of a display panel shown in FIG. 1 , wherein the display panel comprises:

[0066] Base substrate (not shown);

[0067] Multiple repeating units ( Figure 5 The area framed by the dotted line is a repeating unit), which is arranged on the substrate, and each of the repeating units includes a plurality of sub-pixels 21 ( Figure 5 and Figure 6 In the illustrated embodiment, one repeating unit includes four sub-pixels), and the plurality of sub-pixels 21 include: a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel;

[0068] A touch line 22 is arranged on a side of the sub-pixel 21 away from the base substrate. The touch line is distributed in a mesh shape and has a plurality of mesh holes. The mesh holes correspond to the sub-pixels 21 one by one. The orthographic projection of the sub-pixel 21 on the base substrate is located within the orthographic projection area of ​​the corresponding mesh hole on the base substrate.

[0069] Wherein, in each of the repeating units: the distance between the touch wiring 22 located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than the distance between the touch wiring 22 and the third color sub-pixel.

[0070] Figure 5 and Figure 6 In the illustrated embodiment, assuming that the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a blue sub-pixel, in each of the repeating units, the distance between the touch line located between the green sub-pixel and the blue sub-pixel and the green sub-pixel (such as a-x1) is smaller than the distance between the touch line and the blue sub-pixel (such as a+x1).

[0071] In this embodiment, the first color sub-pixel is a green sub-pixel and the third color sub-pixel is a blue sub-pixel. In some other embodiments of the present invention, the first color sub-pixel may also be a red sub-pixel or a blue sub-pixel, and the third color sub-pixel may also be a green sub-pixel or a red sub-pixel.

[0072] In an embodiment of the present invention, in each repeating unit, the distance between the touch line 22 located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than the distance between the touch line 22 and the third color sub-pixel. Through the above arrangement, the touch line is closer to the first color sub-pixel, thereby reducing the light output brightness of the first color sub-pixel at a wide viewing angle, and increasing the light output brightness of the third color sub-pixel, so as to adjust the light output brightness ratio of each sub-pixel at a wide viewing angle, improve the color deviation effect at a wide viewing angle, and only need to adjust the position of the touch line, so the cost is low and mass production is high.

[0073] Figure 5 and Figure 6 In the illustrated embodiment, the distance between the touch line located between the first color sub-pixel (such as the green sub-pixel) and the third color sub-pixel (such as the blue sub-pixel) and the first color sub-pixel is less than the distance between the touch line and the third color sub-pixel; the distance between the touch line located between the first color sub-pixel (such as the green sub-pixel) and the second color sub-pixel (such as the red sub-pixel) and the first color sub-pixel (such as a) is equal to the distance between the touch line and the second color sub-pixel (such as a). In other words, only the touch line between the blue sub-pixel and the green sub-pixel is offset toward the green sub-pixel, while the touch line between the red sub-pixel and the green sub-pixel is not offset toward the green sub-pixel. This offset mode is also called unidirectional offset.

[0074] Please refer to Figure 7 and Figure 8 , Figure 7 is a schematic structural diagram of a display panel according to a third embodiment of the present invention, Figure 8 for Figure 7 A schematic structural diagram of a repeating unit of a display panel shown in FIG. 1 , wherein the display panel comprises:

[0075] Base substrate (not shown);

[0076] Multiple repeating units ( Figure 7 The area framed by the dotted line is a repeating unit), which is arranged on the substrate, and each of the repeating units includes a plurality of sub-pixels 21 ( Figure 7 and Figure 8 In the illustrated embodiment, one repeating unit includes four sub-pixels), and the plurality of sub-pixels 21 include: a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel;

[0077] A touch line 22 is arranged on a side of the sub-pixel 21 away from the base substrate. The touch line 22 is distributed in a mesh shape and has a plurality of mesh holes. The mesh holes correspond to the sub-pixels 21 one by one. The orthographic projection of the sub-pixel 21 on the base substrate is located within the orthographic projection area of ​​the corresponding mesh hole on the base substrate.

[0078] Wherein, in each of the repeating units:

[0079] The distance between the touch wiring 22 located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than the distance between the touch wiring 22 and the second color sub-pixel.

[0080] Furthermore, the distance between the touch wiring 22 located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than the distance between the touch wiring 22 and the third color sub-pixel.

[0081] Figure 7 and Figure 8 In the illustrated embodiment, assuming that the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a blue sub-pixel, in each of the repeating units, the distance between the touch routing between the green sub-pixel and the red sub-pixel and the green sub-pixel (e.g., a-x1) is smaller than the distance between the touch routing between the green sub-pixel and the blue sub-pixel and the green sub-pixel (e.g., a-x1) is smaller than the distance between the touch routing between the green sub-pixel and the blue sub-pixel (e.g., a+x1).

[0082] In this embodiment, the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a blue sub-pixel. In some other embodiments of the present invention, the first color sub-pixel may also be a red sub-pixel or a blue sub-pixel.

[0083] In an embodiment of the present invention, in each repeating unit, the distance between the touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than the distance between the touch line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than the distance between the touch line and the third color sub-pixel. Through the above arrangement, the touch line is closer to the first color sub-pixel, thereby reducing the light output brightness of the first color sub-pixel at a wide viewing angle, and increasing the light output brightness of the second color sub-pixel and / or the third color sub-pixel, so as to adjust the light output brightness ratio of each sub-pixel at a wide viewing angle, improve the color deviation effect at a wide viewing angle, and only need to adjust the position of the touch line, so the cost is low and mass production is high.

[0084] Figure 7 and Figure 8 In the illustrated embodiment, the distance between the touch line located between the first color sub-pixel (such as the green sub-pixel) and the third color sub-pixel (such as the blue sub-pixel) and the first color sub-pixel is smaller than the distance between the touch line located between the first color sub-pixel (such as the green sub-pixel) and the second color sub-pixel (such as the red sub-pixel), and the first color sub-pixel is also smaller than the distance between the touch line located between the first color sub-pixel (such as the green sub-pixel) and the second color sub-pixel (such as the red sub-pixel). In other words, the touch line between the blue sub-pixel and the green sub-pixel is offset toward the green sub-pixel, and the touch line between the red sub-pixel and the green sub-pixel is also offset toward the green sub-pixel. This offset mode is also called bidirectional offset.

[0085] In the above embodiment, the distance that the touch line between the blue sub-pixel and the green sub-pixel is offset toward the green sub-pixel is equal to the distance that the touch line between the red sub-pixel and the green sub-pixel is offset toward the green sub-pixel, both of which are x1. Of course, in some other embodiments of the present invention, the distance that the touch line between the blue sub-pixel and the green sub-pixel is offset toward the green sub-pixel and the distance that the touch line between the red sub-pixel and the green sub-pixel is offset toward the green sub-pixel may not be equal. For example, the distance that the touch line between the blue sub-pixel and the green sub-pixel is offset toward the green sub-pixel is x1, and the distance that the touch line between the red sub-pixel and the green sub-pixel is offset toward the green sub-pixel is x2.

[0086] In the embodiment of the present invention, different offset distances and / or offset methods (one-way offset or two-way offset) can be used according to the basic color shift performance of different products, and the color shift of the large viewing angle can be adjusted to different degrees to meet product specifications.

[0087] In the above embodiments, the position of the touch line between the sub-pixels is regulated within the repeating unit so that the touch line is offset toward the first color sub-pixel. In the embodiments of the present invention, optionally, the position of the touch line between the sub-pixels can also be regulated between adjacent repeating units. In other words, the position of the touch line between two adjacent sub-pixels, regardless of whether they belong to the same repeating unit, is regulated to further improve the color deviation effect.

[0088] That is, within each of the repeating units and between adjacent repeating units:

[0089] A distance between a touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the second color sub-pixel;

[0090] and / or,

[0091] A distance between a touch control line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than a distance between the touch control line and the third color sub-pixel.

[0092] For example, see Figure 3 , Figure 3 In the example, 31 and 32 are two adjacent repeating units. Figure 3 It can be seen that the distance between the touch line between the red sub-pixel of the repeating unit 31 and the green sub-pixel adjacent to the red sub-pixel of the repeating unit 32 and the green sub-pixel (such as a-x1) is smaller than the distance between the touch line and the red sub-pixel (such as a+x1).

[0093] Of course, it should be noted that in the embodiment of the present invention, within the repeating unit, the position of the touch wiring between the sub-pixels is regulated so that the touch wiring is offset to the first color sub-pixel. Between the adjacent repeating units, the position of the touch wiring between the sub-pixels may not be regulated. For example, Figure 3 The distance between the touch line between the red sub-pixel of the repeating unit 31 and the green sub-pixel adjacent to the red sub-pixel of the repeating unit 32 and the green sub-pixel may also be equal to the distance between the red sub-pixels. The present invention is not limited to this.

[0094] In the embodiment of the present invention, optionally, when the distance between the touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than the distance between the touch line and the second color sub-pixel, the difference between the distance between the touch line and the second color sub-pixel and the distance between the touch line and the first color sub-pixel is greater than or equal to 1 μm. Figure 3 For example, when the distance between the touch line located between the green sub-pixel and the red sub-pixel and the green sub-pixel is smaller than the distance between the touch line and the red sub-pixel, the difference between the distance between the touch line and the green sub-pixel (such as a-x1) and the distance between the touch line and the red sub-pixel (such as a+x1) is greater than or equal to 1μm, that is, (a+x1)-(a-x1)=2x1=1μm. It should be noted that the first color sub-pixel and the second color sub-pixel can be two sub-pixels in the same repeating unit, or they can be sub-pixels located in different repeating units.

[0095] In the embodiment of the present invention, optionally, when the distance between the touch line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than the distance between the touch line and the third color sub-pixel, the difference between the distance between the touch line and the third color sub-pixel and the distance between the touch line and the first color sub-pixel is greater than or equal to 1 μm. Figure 5 For example, when the distance between the touch line located between the green sub-pixel and the blue sub-pixel and the green sub-pixel is smaller than the distance between the touch line and the blue sub-pixel, the difference between the distance between the touch line and the green sub-pixel (such as a-x1) and the distance between the touch line and the blue sub-pixel (such as a+x1) is greater than or equal to 1μm, that is, (a+x1)-(a-x1)=2x1=1μm. It should be noted that the first color sub-pixel and the third color sub-pixel can be two sub-pixels in the same repeating unit, or they can be sub-pixels located in different repeating units.

[0096] In the embodiment of the present invention, optionally, the distance between the touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than the distance between the touch line located between the first color sub-pixel and the second color sub-pixel; the distance between the touch line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is equal to the distance between the touch line located between the first color sub-pixel and the third color sub-pixel. Figure 3For example, the distance between the touch line located between the green sub-pixel and the red sub-pixel and the green sub-pixel is smaller than the distance between the touch line located between the green sub-pixel and the blue sub-pixel and the green sub-pixel (such as a) is equal to the distance between the touch line located between the green sub-pixel and the blue sub-pixel (such as a). It should be noted that the first color sub-pixel, the second color sub-pixel and the third color sub-pixel can be two sub-pixels in the same repeating unit, or they can be sub-pixels located in different repeating units.

[0097] In the embodiment of the present invention, optionally, the distance between the touch line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than the distance between the touch line located between the first color sub-pixel and the third color sub-pixel; the distance between the touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is equal to the distance between the touch line located between the first color sub-pixel and the second color sub-pixel. Figure 5 For example, the distance between the touch line located between the green sub-pixel and the blue sub-pixel and the green sub-pixel is smaller than the distance between the touch line located between the green sub-pixel and the red sub-pixel and the green sub-pixel (such as a) is equal to the distance between the touch line located between the green sub-pixel and the red sub-pixel (such as a). It should be noted that the first color sub-pixel, the second color sub-pixel and the third color sub-pixel can be two sub-pixels in the same repeating unit, or they can be sub-pixels located in different repeating units.

[0098] For some examples, please refer to Fig. 9 Each of the repeating units includes four sub-pixels, and the four sub-pixels include: two of the first color sub-pixels (such as green (G) sub-pixels), one of the second color sub-pixels (such as red (R) sub-pixels) and one of the third color sub-pixels (such as blue (B) sub-pixels), and the four sub-pixels are arranged in three rows and three columns, the two of the first color sub-pixels are located in the same row and different columns, and the second color sub-pixel and the third color sub-pixel are located in different rows and the same column.

[0099] Of course, the arrangement of the sub-pixels in the embodiment of the present invention is not limited thereto. The number of sub-pixels in the repeating unit is not limited to 4, and may be 3 or more than 4.

[0100] In some embodiments, optionally, the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a blue sub-pixel. Of course, the present invention is not limited thereto, and the first color sub-pixel may also be a red sub-pixel or a blue sub-pixel.

[0101] In some embodiments, optionally, the line width of the touch line is 2-6 μm.

[0102] In an embodiment of the present invention, the color shift effect can also be improved by widening the line width of the touch line. In some embodiments, optionally, the line width of the touch line is greater than a preset threshold. In some embodiments, optionally, the preset threshold is 6μm. The line width of the touch line in the existing solution is usually 2 to 6μm. The line width of the touch line in the embodiment of the present invention is greater than the line width of the touch line in the existing solution. The change in line width can change the brightness ratio of each sub-pixel, thereby improving the color shift effect.

[0103] Please refer to Fig.10 , Fig.10 The line width of the touch line in the embodiment is wider than that of the existing touch line. Taking the green sub-pixel as the first color sub-pixel as an example, although the touch line is widened as a whole, usually, the green sub-pixel accounts for about 65% to 75% of the light output brightness ratio of each sub-pixel. After the touch line is widened, the light output brightness of the green sub-pixel is more affected by the touch line due to its larger proportion, and the brightness decays faster. Therefore, the light output brightness ratio of each sub-pixel will be adjusted to further improve the color deviation effect of large viewing angle.

[0104] The following describes the positional relationship between the sub-pixels and the touch control wiring in the embodiment of the present invention in conjunction with the cross-sectional view of the display panel. Fig. 20 , Fig. 20 The cross-sectional view of a display panel according to an embodiment of the present invention comprises: a base substrate 200, and, sequentially arranged on the base substrate 200, a buffer layer 201, an active layer 202, a first gate insulating layer 203, a first gate metal layer (including a gate electrode 204a and a first capacitor electrode 204b), a first gate insulating layer 205, a second gate metal layer (including a second capacitor electrode 206), an interlayer dielectric layer 207, a first source-drain metal layer 208 (including a source and a drain), a passivation layer (PVX) 209, a first planarization layer (PLN1) 210, second source and drain metal layer 211, second planarization layer (PLN2) 212, anode (Anode) 213, pixel definition layer 214, light emitting layer (EL) 215, cathode (cathode) 216, first inorganic encapsulation layer (CVD1) 217, organic encapsulation layer (IJP) 218, second inorganic encapsulation layer (CVD2) 219, inorganic insulating layer (buffer) 220, touch insulating layer (TLD) 221, touch trace 222 and planarization layer (OC) 223.

[0105] The anode 213 , the light emitting layer (EL) 215 , and the cathode 216 are used to form the above-mentioned sub-pixel, also called a light emitting unit.

[0106] The active layer 202, the gate electrode 204a, the source electrode and the drain electrode are used to form a thin film transistor of a driving circuit. The driving circuit is used to drive the sub-pixel to emit light. The first capacitor electrode 204b and the second capacitor electrode 206 are used to form a capacitor of the driving circuit.

[0107] The touch wiring 222 is the touch wiring 22 in the above embodiment. The touch wiring 222 (22) is distributed in a mesh shape and has a plurality of mesh holes, the mesh holes correspond to the sub-pixels one by one, and the orthographic projection of the sub-pixels on the substrate is located within the orthographic projection area of ​​the corresponding mesh holes on the substrate.

[0108] In the embodiment of the present invention, the touch wiring is formed of an opaque conductive material, for example, a metal material such as TiAlTi.

[0109] In the embodiment of the present invention, the touch control wiring may include a plurality of wirings, and openings are made at some positions of the touch control wirings distributed in a mesh pattern to form a plurality of insulated touch control wirings.

[0110] The touch control wiring in the embodiment of the present invention may include a plurality of Tx wirings and a plurality of Rx wirings, and the Tx wirings and the Rx wirings are arranged to cross each other.

[0111] The touch lines in the embodiment of the present invention can be directly made on the packaging layer of the display panel, and this process is also called FMLOC (Flexible Multi Layer On Cell). Of course, the touch lines are set on a separate touch screen panel (TSP), which is attached to the display panel.

[0112] The display panel in the embodiment of the present invention may be an OLED display panel, and of course, other types of display panels are not excluded.

[0113] An embodiment of the present invention further provides a display device, comprising the display panel described in any one of the above embodiments.

[0114] The color shift improvement effect of the display panel of the embodiment of the present invention is described below through specific embodiments.

[0115] In the embodiment of the present invention, the color shift level of the display panel can be evaluated by connecting the chromaticity coordinates of each viewing angle, i.e., the color shift trajectory, and the relative chromaticity value (Δu′v′) of each viewing angle and the 0° viewing angle. The color shift trajectory adopts the CIE1976 coordinate system.

[0116] Generally:

[0117]

[0118] 0.004Δu′v′=1JNCD

[0119] Among them, (u0, v0) is the chromaticity coordinate at 0° viewing angle, (u1, v1) is the chromaticity coordinate at the target wide viewing angle, and JNCD stands for "Just Noticeable Color Difference", which means "just noticeable color difference". It is a measurement standard relative to the visual sensitivity of the human eye, used to determine whether the human eye can perceive the difference between two colors. The lower the JNCD value, the higher the color accuracy of the display, and it can present more realistic and vivid color effects.

[0120] In one embodiment, the touch line between the green (G) sub-pixel and the blue (B) sub-pixel is offset. In the existing display panel, the spacing between each sub-pixel is fixed to 2a+bμm, and the touch line has a fixed width of bμm. The touch line between the G sub-pixel and the B sub-pixel is offset, and the distance to the G sub-pixel is compressed by x1μm, so that the distance from the touch line to the G sub-pixel is a-x1μm, and the distance to the B sub-pixel is a+x1μm. Fig.11 As shown in Table 1, compared with the color deviation track (Normal) of the existing display panel, the G / B offset solution significantly optimizes the color deviation track, reduces the green / cyan color shift at viewing angle, and slows down the color tone. As shown in Table 1, the 60° / 75° color deviation values ​​are reduced by 1.1 / 2.8 JNCD.

[0121] In another embodiment, the touch lines between the green (G) sub-pixel and the blue (B) sub-pixel, and between the green (G) sub-pixel and the red (R) sub-pixel are offset. In existing display panels, the spacing between each sub-pixel is fixed at 2a+bμm, and the touch line has a fixed width of bμm. The touch line between the G sub-pixel and the B sub-pixel is offset, and the distance to the G sub-pixel is compressed by x2μm. Then, the distance from the touch line to the G sub-pixel is a-x2μm, and the distance to the B sub-pixel is a+x2μm. The touch line between the G sub-pixel and the R sub-pixel is offset, and the distance to the G sub-pixel is compressed by y1μm. Then, the distance from the touch line to the G sub-pixel is a-y1μm, and the distance to the R sub-pixel is a+y1μm. Fig.12 As shown in Figure 1, compared with the color deviation track (Normal) of the existing display panel, the color deviation track of the G / B and G / R bias schemes is closer to the 0° viewing angle on the basis of the G / B bias. As shown in Table 1, the 60° / 75° color deviation values ​​are reduced by 2.0 / 4.6 JNCD.

[0122] In another embodiment, the touch line is widened, and the touch line between the green (G) sub-pixel and the blue (B) sub-pixel is offset. In the existing display panel, the spacing between each sub-pixel is fixed at 2a+bμm, and the touch line has a fixed width of bμm. The line width of the touch line is widened by 2z1μm, and the width is b+2z1μm. The distance from the touch line to each sub-pixel becomes a-z1μm. At the same time, the touch line between the G sub-pixel and the B sub-pixel is offset, and the distance to the G sub-pixel is compressed by x3μm. Then, the distance from the touch line to the G sub-pixel is a-z1-x3μm, and the distance to the B sub-pixel is a-z1+x3μm. Fig.13 As shown in the figure, compared with the color deviation track (Normal) of the existing display panel, the color deviation track of the widened touch line and G / B offset solution at a large viewing angle is similar to the 45° visual effect, and the color deviation effect is basically the same under a large viewing angle; as shown in Table 1, the color deviation values ​​of 60° / 75° are greatly reduced by 2.4 / 4.8JNCD.

[0123] Please refer to Table 1:

[0124]

[0125] Table 1 Existing display panels, bias schemes, large viewing angle bias values

[0126] It can be seen from the above embodiments that by offsetting the touch wiring, the monochrome brightness attenuation under the viewing angle is changed, and the color shift effect of the product is optimized. At the same time, it can be specially optimized according to different product effects, with low cost and high mass production.

[0127] In the embodiment of the present invention, a simulation experiment can be performed to simulate the influence of the offset of the touch line on the color deviation track, and the final offset of the touch line can be determined according to the simulated color deviation track.

[0128] The principle of improving color deviation in the embodiment of the present invention is as follows: the color deviation of the viewing angle is affected by the superposition of the intrinsic spectrum of the luminescent material and the device microcavity spectrum. As the viewing angle increases, the device microcavity spectrum blue-shifts (i.e., moves toward the short wavelength direction), and the intrinsic spectrum of the material is not affected by the viewing angle. The inconsistency of the device microcavity spectrum of each sub-pixel with the viewing angle shift intensity leads to color differences in the synthesized white light. Under the viewing angle, the device microcavity effect of a certain color sub-pixel decays slower than that of the other two color sub-pixels, which will cause the wide viewing angle visual effect to tend to the color of the sub-pixel. If the green sub-pixel microcavity effect decays weaker than the other two color sub-pixels under the wide viewing angle, the visual effect color will be green under the wide viewing angle. By placing the touch wiring close to the green sub-pixel and away from the red and / or blue sub-pixels, that is, using the touch wiring to block the light from the green sub-pixel under more viewing angles, the effect of improving color deviation is achieved.

[0129] It should be noted that if the product is bluish or reddish in color at a wide viewing angle, the touch line can be offset toward the blue sub-pixel or the red sub-pixel to achieve the effect of improving the color deviation.

[0130] Please refer to Table 2 and Fig.14 Table 2 shows the color deviation improvement effect corresponding to the offset of the touch line. Fig.14 The change in the viewing angle of white light and each monochrome brightness corresponding to the offset of the touch line.

[0131]

[0132]

[0133] Table 2 Color deviation improvement effect corresponding to the offset of touch line

[0134] Among them, REF in the above Table 2 is an existing display panel, the touch line is located at the center of the adjacent sub-pixel, and the distance from the adjacent red (R) sub-pixel, green (G) sub-pixel, and blue (B) sub-pixel is aμm (please refer to Fig.15 , Fig.15 TMB is the touch line). Split2, Split3 and Split4 in Table 2 above are display panels with simulated touch line offset. Fig.16 Taking Split3 as an example, the touch line between the B sub-pixel and the G sub-pixel is offset toward the G sub-pixel, and the distance between the B sub-pixel and the touch line is a+2μm (i.e., B→G in Table 2), and the distance between the G sub-pixel and the touch line is a-2μm (i.e., G→B in Table 2).

[0135] Please refer to Fig.17 , Fig.17 Schematic diagram of the color shift trajectory of each display panel in Table 2. Fig.17 It can be seen that the color shift trajectories of Split2, Split3 and Split4 are significantly optimized, the green / cyan viewing angle is reduced, and the color tone becomes slower.

[0136] In addition, it should be noted that when simulating the offset of the touch line, the touch performance and / or the transmittance of the display panel must be as close as possible to the original product, as shown in Table 3.

[0137]

[0138]

[0139] Table 3 Simulation results

[0140] In Table 3, Cm (pF) represents capacitance, △Cm (pF) represents capacitance difference, Cm (pF), △Cm (pF) and △Cm / Cm (%) all represent touch performance. Tx represents a transmitting electrode line in a touch line, and Rx represents a receiving electrode line in a touch line. The parameters related to Tx and Rx in Table 3 all represent touch performance.

[0141] From the simulation results, it can be seen that after the touch line is offset, the touch performance and the transmittance of the display panel are basically the same as the original product.

[0142] The embodiment of the present invention further provides a simulation method, comprising:

[0143] Step S1: Simulate and confirm the color deviation track of each display panel (Split2, Split3 and Split4) and the offset scheme of the touch wiring of the display panel, such as Fig.18 .

[0144] Step S2: according to the simulation result of step S1 and in combination with the morphology of the touch lines of the original display panel, the position and / or line width of the touch lines are moved.

[0145] Step S3: After the touch line is adjusted, the touch performance and / or transmittance are confirmed by simulation, and corrections are made until the difference between the touch performance and / or transmittance of the original product is small, and the final optimal solution is selected.

[0146] Please refer to Fig.19 , Fig.19 Schematic diagram of the measured color deviation trajectory of two types of display panels after touch line adjustment. Fig.19 It can be seen that after the touch lines of the two types of display panels are adjusted, the influence on the color deviation trajectory of the product is basically the same.

[0147] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A display panel, characterized in that: include: substrate substrate; A plurality of repeating units are arranged on the base substrate, each of the repeating units includes a plurality of sub-pixels, and the plurality of sub-pixels include: a first color sub-pixel, a second color sub-pixel and a third color sub-pixel; A touch line is arranged on a side of the sub-pixel away from the base substrate, the touch line is distributed in a mesh shape and has a plurality of mesh holes, the mesh holes correspond to the sub-pixels one by one, and the orthographic projection of the sub-pixel on the base substrate is located within the orthographic projection area of ​​the corresponding mesh hole on the base substrate; Wherein, in each of the repeating units: A distance between a touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the second color sub-pixel; and / or, A distance between the touch wiring located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than a distance between the touch wiring located between the first color sub-pixel and the third color sub-pixel.

2. The display panel according to claim 1, characterized in that: Within each of the repeating units and between adjacent repeating units: A distance between a touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the second color sub-pixel; and / or, A distance between a touch control line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than a distance between the touch control line and the third color sub-pixel.

3. The display panel according to claim 1 or 2, characterized in that: When the distance between the touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than the distance between the touch line and the second color sub-pixel, the difference between the distance between the touch line and the second color sub-pixel and the distance between the touch line and the first color sub-pixel is greater than or equal to 1 μm; and / or, When the touch routing located between the first color sub-pixel and the third color sub-pixel is at a distance less than the first color sub-pixel, the difference between the distance between the touch routing and the third color sub-pixel and the distance between the touch routing and the first color sub-pixel is greater than or equal to 1 μm.

4. The display panel according to claim 1 or 2, characterized in that: A distance between a touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the second color sub-pixel; The distance between the touch line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is equal to the distance between the touch line and the third color sub-pixel.

5. The display panel according to claim 1 or 2, characterized in that: A distance between a touch line located between the first color sub-pixel and the third color sub-pixel and the first color sub-pixel is smaller than a distance between the touch line and the third color sub-pixel; The distance between the touch line located between the first color sub-pixel and the second color sub-pixel and the first color sub-pixel is equal to the distance between the touch line and the second color sub-pixel.

6. The display panel according to claim 1 or 2, characterized in that: Each of the repeating units includes four sub-pixels, and the four sub-pixels include: two of the first color sub-pixels, one of the second color sub-pixel, and one of the third color sub-pixels. The four sub-pixels are arranged in three rows and three columns. The two of the first color sub-pixels are located in the same row and different columns, and the second color sub-pixel and the third color sub-pixel are located in different rows and the same column.

7. The display panel according to claim 1 or 2, characterized in that: The first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a blue sub-pixel.

8. The display panel according to claim 1 or 2, characterized in that: The touch control wiring has a line width of 2-6 μm.

9. The display panel according to claim 1 or 2, characterized in that: The line width of the touch line is greater than a preset threshold, and the preset threshold is 6 μm.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 9.

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