Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device; the display panel sets a touch layer in a region between two adjacent light emitting material portions, so that the touch layer is arranged between a driving circuit layer and an encapsulation layer, the inlaid arrangement of the touch layer is realized, the thickness of the display panel is reduced, and because the touch layer is located between the two adjacent light emitting material portions, the touch layer can be formed before the light emitting material layer, a low-temperature process does not need to be used, the process difficulty is reduced, the yield is improved, and the light emitted by the light emitting material portion can not pass through the touch layer, the blocking of the light by the touch layer is avoided, the light efficiency of the display panel is improved, and the power consumption of the display panel is reduced.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) displays are widely used due to their advantages such as self-emission, wide color gamut, low power consumption, and the ability to achieve flexible displays. To reduce thickness, current OLED displays employ DOT (Direct On Cell Touch) technology to fabricate the touch layer. Specifically, DOT technology involves depositing and coating films to form the touch layer after the encapsulation layer is fabricated in the OLED display panel. Due to the low-temperature processing required for OLED displays, fabricating the touch layer is challenging, and the weak adhesion between the touch layer and the encapsulation layer can lead to cracks, causing display and touch malfunctions. Simultaneously, to reduce reflectivity, OLED displays use PLP (Polless Panel) technology, which uses a color filter layer instead of a polarizer to reduce reflection. When both DOT and PLP technologies are used in OLED displays, the color filter layer can only be fabricated on the touch layer, resulting in lower light extraction efficiency and increased power consumption.

[0003] Therefore, existing OLED display devices using DOT technology suffer from technical problems such as high manufacturing difficulty, low yield, and low light extraction efficiency. Summary of the Invention

[0004] This application provides a display panel and a display device to solve the technical problems of existing OLED display devices using DOT technology, such as high process difficulty, low yield, and low light extraction efficiency.

[0005] To achieve the above objectives, according to a first aspect of this application, a display panel is provided, the display panel comprising:

[0006] Substrate;

[0007] A driving circuit layer is disposed on one side of the substrate;

[0008] A light-emitting functional layer is disposed on the side of the driving circuit layer away from the substrate. The light-emitting functional layer includes a pixel definition layer and a light-emitting material layer disposed sequentially. The pixel definition layer includes a plurality of pixel openings, and the light-emitting material layer includes a plurality of light-emitting material portions disposed within the pixel openings.

[0009] A touch layer is disposed on the side of the driving circuit layer away from the substrate;

[0010] An encapsulation layer is disposed on the side of the light-emitting functional layer away from the driving circuit layer;

[0011] In the region between two adjacent light-emitting material portions, the touch layer is disposed between the driving circuit layer and the encapsulation layer.

[0012] According to a second aspect of this application, a display device is provided, comprising a display panel as described in any of the above embodiments. Embodiments of this application provide a display panel and a display device; the display panel achieves embedded placement of the touch layer by disposing of a touch layer in the region between two adjacent light-emitting material portions, with the touch layer disposed between a driving circuit layer and a packaging layer. This reduces the thickness of the display panel. Furthermore, since the touch layer is located between two adjacent light-emitting material portions, it can be formed before the light-emitting material layer, eliminating the need for low-temperature processing, reducing process difficulty, and improving yield. Additionally, the light emitted from the light-emitting material portions does not pass through the touch layer, avoiding light obstruction by the touch layer, thus improving the light extraction efficiency of the display panel and reducing its power consumption.

[0013] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0016] Figure 1 This is a schematic diagram of a comparison display device provided in an embodiment of this application.

[0017] Figure 2 This is a plan view of the display panel provided in an embodiment of this application.

[0018] Figure 3 This is a partial enlarged view of the area corresponding to the second touch electrode in the display panel provided in the embodiment of this application.

[0019] Figure 4 This is a first cross-sectional schematic diagram of a display panel provided in an embodiment of this application.

[0020] Figure 5This is a second cross-sectional schematic diagram of the display panel provided in an embodiment of this application.

[0021] Figure 6 This is a schematic diagram of the second touch insulating layer provided in an embodiment of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0023] To illustrate the principle behind the technical problems in the embodiments of this application, a contrast display device is provided. It should be understood that this contrast display device cannot be considered prior art in the embodiments of this application. Figure 1 As shown, a contrast display device integrating DOT and PLP technologies is provided. The contrast display device includes a substrate 111, an array film 112, a light-emitting film 113, an encapsulation film 114, a touch film 115, and a filter film 116. Since the touch film 115 is formed after the encapsulation film 114 is prepared, a low-temperature process is used to form the touch film 115 to avoid the influence of subsequent processes on the light-emitting film 113. This results in a more difficult process for forming the touch film 115, and the adhesion between the touch film 115 and the encapsulation film 114 is low, leading to cracking and problems such as water and oxygen intrusion. Furthermore, when the filter film 116 replaces the polarizer in the contrast display device, the filter film 116 cannot be placed below the touch film 115. Therefore, light must travel from the touch film 115 to the filter film 116, resulting in lower light extraction efficiency and increased power consumption of the OLED display device. Therefore, existing OLED display devices using DOT technology suffer from high process difficulty, low yield, and low light extraction efficiency.

[0024] This application provides a display panel 2 and a display device to solve the above-mentioned technical problems.

[0025] Figure 2 This is a plan view of the display panel provided in an embodiment of this application. Figure 3 This is a partial enlarged view of the area corresponding to the second touch electrode in the display panel provided in the embodiment of this application. Figure 4 This is a first cross-sectional schematic diagram of a display panel provided in an embodiment of this application. Figure 5 This is a second cross-sectional schematic diagram of the display panel provided in an embodiment of this application. Figure 6 This is a schematic diagram of the second touch insulating layer provided in an embodiment of this application.

[0026] like Figures 2 to 6 As shown, this application embodiment provides a display panel 2, which includes a substrate 41, a driving circuit layer 42, a light-emitting functional layer 43, a touch layer 44, and an encapsulation layer 45. The driving circuit layer 42 is disposed on one side of the substrate 41, and the light-emitting functional layer 43 is disposed on the side of the driving circuit layer 42 away from the substrate 41. The light-emitting functional layer 43 includes a pixel definition layer 433 and a light-emitting material layer 432 disposed sequentially. The pixel definition layer 433 includes a plurality of pixel openings 433a, and the light-emitting material layer 432 includes a plurality of light-emitting material portions 432a, which are disposed within the pixel openings 433a. The touch layer 44 is disposed on the side of the driving circuit layer 42 away from the substrate 41. The encapsulation layer 45 is disposed on the side of the light-emitting functional layer 43 away from the driving circuit layer 42.

[0027] In the region between two adjacent light-emitting material portions 432a, the touch layer 44 is disposed between the driving circuit layer 42 and the encapsulation layer 45.

[0028] This application provides a display panel 2. The display panel 2 has a touch layer 44 disposed in the area between two adjacent light-emitting material portions 432a. The touch layer 44 is disposed between the driving circuit layer 42 and the encapsulation layer 45, which realizes the embedded setting of the touch layer 44, reduces the thickness of the display panel 2, and since the touch layer 44 is located between two adjacent light-emitting material portions 432a, it can be formed before the light-emitting material layer 432, without the need for a low-temperature process, reducing the process difficulty and improving the yield. Moreover, the light emitted by the light-emitting material portions 432a can not pass through the touch layer 44, avoiding the blocking of light by the touch layer 44, improving the light emission efficiency of the display panel 2 and reducing the power consumption of the display panel 2.

[0029] Specifically, the light-emitting functional layer 43 includes a pixel electrode layer 431, a pixel definition layer 433, a light-emitting material layer 432, and a common electrode layer 434. The pixel electrode layer 431 is disposed between the pixel definition layer 433 and the driving circuit layer 42.

[0030] Specifically, the touch layer 44 can be positioned between the common electrode layer 434 and the driving circuit layer 42.

[0031] Specifically, it can be understood that since the touch layer 44 is located between the encapsulation layer 45 and the driving circuit layer 42, the touch layer 44 can be formed before the light-emitting material layer 432. Therefore, the process of the touch layer 44 will not affect the virtual light-emitting material layer 432. Other processes besides the low-temperature process can be used to form the touch layer 44, which can simplify the process. Furthermore, since the touch layer 44 is not formed on the encapsulation layer, there is no problem of low adhesion between the touch layer 44 and the encapsulation layer, which leads to cracks and water and oxygen intrusion, thus improving the yield of the display panel 2.

[0032] Specifically, it can be understood that since the touch layer 44 is located between the encapsulation layer 45 and the driving circuit layer 42, when the color filter layer is set on the display panel 2, the color filter layer can be directly set on the encapsulation layer, which reduces the gap between the color filter layer and the light-emitting functional layer 43, thereby improving the light emission efficiency of the color filter layer and the light emission efficiency of the display panel 2. Furthermore, the reduced thickness of the display panel 2 facilitates bending of the display panel 2.

[0033] Specifically, such as Figure 2 As shown, the display panel 2 includes a display area 201 and a non-display area 202. The non-display area 202 can be partially surrounding or surrounding the display area 201, and the non-display area 202 can be bent to the back of the display panel.

[0034] Specifically, such as Figure 2 As shown, the display panel 2 includes a plurality of first touch electrodes 211 and a plurality of second touch electrodes 212 arranged in an array. The plurality of first touch electrodes 211 located in the same row are connected. The plurality of rows of first touch electrodes 211 are arranged along the second direction Y. The plurality of second touch electrodes 212 located in the same column are connected by connecting lines 213. The plurality of columns of second touch electrodes 212 are arranged along the first direction X. The angle between the first direction X and the second direction Y is greater than 0 and less than or equal to 90 degrees.

[0035] Specifically, such as Figure 2 As shown, the display panel 2 also includes a first touch trace 214 and a second touch trace 215. The first touch trace 214 is connected to the first touch electrode 211, and the second touch trace 215 is connected to the second touch electrode 212.

[0036] Specifically, such as Figure 2 As shown, the display panel 2 also includes a touch driver chip 22, which refers to TDDI (Touch and Display Diver Integration). The touch driver chip 22 can be connected to the touch electrodes through touch traces.

[0037] Specifically, to illustrate the design in the embodiments of this application, the area corresponding to the second touch electrode 212 is magnified to obtain... Figure 3 ,from Figure 3 As can be seen, the second touch electrode 212 includes multiple grid lines 32, and each grid line is provided with a sub-pixel 31. The sub-pixel 31 includes a first sub-pixel 311, a second sub-pixel 312 and a third sub-pixel 313. In the area where the second touch electrode 212 is connected by the connecting line 213, the second touch electrode 212 can pass through a via and be connected to the connecting line 213. An auxiliary electrode 33 is provided between the grid lines 32 of the second touch electrode 212.

[0038] Specifically, it is understandable that Figure 3 The location and shape of the auxiliary electrode 33 are for illustrative purposes only. The location, number, and shape of the auxiliary electrode 33 can be set according to requirements.

[0039] Specifically, such as Figure 2 As shown, in some display panels 2, test terminals 24 are provided to test the touch traces and touch electrodes. Correspondingly, control transistors 23 and control lines 25 are provided to control whether to test the touch traces and touch electrodes.

[0040] In some embodiments, such as Figure 4 , Figure 5 As shown, the display panel 2 includes a connection trace 213, a touch layer 44 consisting of a first touch insulating layer 441, a touch electrode layer 442, and a second touch insulating layer 443. The first touch insulating layer 441 is disposed on the side of the connection trace 213 away from the driving circuit layer 42. The touch electrode layer 442 is disposed on the side of the first touch insulating layer 441 away from the connection trace 213, and the touch electrode layer 442 includes an array of multiple first touch electrodes 211 and multiple second touch electrodes 212. The second touch insulating layer 443 is disposed between the touch electrode layer 442 and the common electrode layer 434.

[0041] The multiple second touch electrodes 212 located in the same column are connected by the connecting traces 213. By providing a first touch insulating layer 441 between the connecting traces 213 and the metal conductive layer, a short circuit between the connecting traces 213 and the touch electrode layer 442 can be prevented. By providing a second touch insulating layer 443 between the touch electrode layer 442 and the encapsulation layer 45, a short circuit between the touch electrode layer 442 and the common electrode layer 434 can be prevented. Furthermore, the multiple second touch electrodes 212 located in the same column are connected by the connecting traces 213, which enables the normal operation of the second touch electrodes 212.

[0042] Specifically, such as Figure 2 , Figure 4 , Figure 5 As shown, the touch electrode layer 442 includes a plurality of first touch electrodes 211 and a plurality of second touch electrodes 212. The plurality of first touch electrodes 211 arranged along a first direction are connected to form a row of first touch electrodes 211. The multiple rows of first touch electrodes 211 are arranged along a second direction. The plurality of second touch electrodes 212 arranged along the second direction are connected by connecting lines 213 to form a column of second touch electrodes 212. The multiple columns of second touch electrodes 212 are arranged along the first direction.

[0043] Specifically, the first touch electrode 211 can be a driving electrode, and the second touch electrode 212 can be a sensing electrode, or the first touch electrode 211 can be a sensing electrode and the second touch electrode 212 can be a driving electrode.

[0044] Specifically, the material of the touch electrode layer 442 includes metals, such as a stack of one or more of titanium, aluminum, and copper. However, the embodiments of this application are not limited to this, and the material of the touch electrode layer 442 includes indium tin oxide.

[0045] Specifically, the material of the first touch insulating layer 441 includes silicon nitride.

[0046] In some embodiments, such as Figure 4 As shown, the light-emitting functional layer 43 also includes a pixel electrode layer 431, which is disposed between the pixel definition layer 433 and the driving circuit layer 42. The pixel electrode layer 431 includes a plurality of pixel electrodes 431a and the connection traces 213, and the pixel electrodes 431a are insulated from the connection traces 213. By including the connection traces 213 in the pixel electrode layer 431, the connection traces 213 can be formed through the pixel electrode layer 431 when forming the touch layer 44, eliminating the need to form the connection traces 213 separately, thus reducing the number of process steps in the display panel 2 and reducing the thickness of the display panel 2.

[0047] Specifically, it can be seen that the connecting trace 213 is disposed between the pixel electrodes 431a, and the connecting trace 213 is insulated from the pixel electrodes 431a.

[0048] In some embodiments, such as Figure 5 As shown, the display panel 2 includes a connection wiring layer 444, which is disposed on the side of the driving circuit layer 42 away from the substrate 41. The connection wiring layer 444 includes the connection traces 213. By including the connection wiring layer 444 in the display panel 2, and disposing of the connection wiring layer 444 on the side of the driving circuit layer 42 away from the substrate 41, and including the connection traces 213, the connection wiring layer 444 can be formed independently without changing the process of the pixel electrode layer 431. Furthermore, the connection wiring layer 444 can be made of a material with better conductivity, thus improving the touch effect.

[0049] Specifically, the material of the connecting trace layer 444 includes metals, such as a stack of one or more of titanium, aluminum, and copper. However, the embodiments of this application are not limited to this, and the material of the connecting trace layer 444 includes indium tin oxide.

[0050] In some embodiments, such as Figure 5As shown, the light-emitting functional layer 43 further includes a common electrode layer 434, which is disposed on the side of the light-emitting material layer 432 away from the pixel definition layer 433; the touch layer 44 further includes a third touch insulating layer 445, which is disposed between the connection trace layer 444 and the driving circuit layer 42. By setting the third touch insulating layer 445, and placing it between the connection trace layer 444 and the driving circuit layer 42, coupling capacitance can be prevented between the connection trace 213 and the pixel electrode, thus preventing display and touch abnormalities.

[0051] Specifically, the material of the third touch insulating layer 445 includes silicon nitride.

[0052] In some embodiments, such as Figure 6 As shown, the second touch insulating layer 443 includes a first sub-layer 443a, a second sub-layer 443b and a third sub-layer 443c arranged sequentially, wherein the third sub-layer 443c extends beyond the second sub-layer 443b;

[0053] The common electrode layer 434 includes a common electrode 434a and a floating electrode 434b. The common electrode 434a is disposed corresponding to the light-emitting material portion 432a, and the floating electrode 434b is disposed corresponding to the touch layer 44. In the region where the third sub-layer 443c extends beyond the second sub-layer 443b, the floating electrode 434b is disconnected from the common electrode 434a. By making the second touch insulating layer 443 include a first sub-layer, a second sub-layer, and a third sub-layer disposed sequentially, with the third sub-layer extending beyond the second sub-layer, the common electrode layer 434 can be disconnected at the position where the third sub-layer extends beyond the second sub-layer during the formation of the common electrode layer 434. This allows the common electrode layer 434 to form both a common electrode and a floating electrode, avoiding signal shielding caused by the common electrode layer 434, which could lead to poor touch control.

[0054] Specifically, when the touch layer 44 is embedded between the encapsulation layer 45 and the driving circuit layer 42, it is found that because the common electrode layer 434 is located on the side of the touch layer 44 closer to the outside, it acts as a shield when the user touches the screen, blocking the touch signal and causing poor touch or even touch failure. In this embodiment, by setting the third sub-layer beyond the second sub-layer, the common electrode layer 434 is disconnected in the area where the third sub-layer extends beyond the second sub-layer to form a common electrode and a floating electrode. The common electrode still outputs a common signal normally, while the floating electrode does not output a signal, thereby avoiding shielding of the touch signal and improving the touch effect.

[0055] Specifically, the above embodiment is illustrated by taking the disconnection of the common electrode layer 434 to form a common electrode and a floating electrode as an example. However, the embodiments of this application are not limited to this. Considering that the common electrode layer 434 cannot be disconnected in some areas, disconnection will cause the common electrode to malfunction. The common electrode portion can be set to correspond with the touch layer 44 portion. Normal display is achieved by inputting a common signal to the common electrode during the display stage. During the touch stage, the output signal to the common electrode is stopped to avoid the common electrode shielding the touch signal, which would lead to poor touch or touch failure.

[0056] Specifically, a portion of the common electrode layer located on the touch layer can also be removed.

[0057] Specifically, the materials of the first sub-layer and the third sub-layer can be the same, while the materials of the first sub-layer and the second sub-layer are different. This allows the undercut structure to be formed by the different etching rates of the second sub-layer and the third sub-layer when etching the second touch insulating layer 443, so that the third sub-layer extends beyond the second sub-layer.

[0058] Specifically, the material of the third sublayer includes silicon oxide, and the material of the second sublayer includes silicon nitride.

[0059] In some embodiments, such as Figure 4 , Figure 5 As shown, the touch electrode layer 442 further includes an auxiliary electrode 33, which is connected to the common electrode 434a. By including the auxiliary electrode 33 in the touch electrode layer 442 and connecting the auxiliary electrode 33 to the common electrode 434a, the impedance of the common electrode can be reduced. Furthermore, since the auxiliary electrode 33 is formed by the touch electrode layer 442, there is no need to add a new film layer, thus reducing the thickness of the display panel 2.

[0060] Specifically, when the common electrode layer 434 is disconnected to form the floating electrode and the common electrode, the impedance of the common electrode will increase. The impedance of the common electrode can be reduced by setting an auxiliary electrode 33. However, adding an auxiliary electrode 33 alone will lead to complex processes and increased thickness. Therefore, the auxiliary electrode 33 can be formed by the touch electrode layer 442, and the auxiliary electrode 33 can be connected to the common electrode to reduce the impedance of the common electrode. This does not require adding a film layer and process steps, thus reducing the thickness of the display panel 2.

[0061] In some embodiments, such as Figure 4 , Figure 5As shown, the second touch insulating layer 443 overlaps the auxiliary electrode 33, and the area of ​​the overlapping portion of the second touch insulating layer 443 and the auxiliary electrode 33 is smaller than the area of ​​the auxiliary electrode 33. By making the second touch insulating layer 443 overlap the auxiliary electrode 33, and the area of ​​the overlapping portion of the second touch insulating layer 443 and the auxiliary electrode 33 is smaller than the area of ​​the auxiliary electrode 33, the common electrode layer 434 can be disconnected in the area corresponding to the auxiliary electrode 33. The auxiliary electrode 33 overlaps with the common electrode, and the common electrode will not overlap with the first touch electrode 211 and the second touch electrode 212, thereby improving the yield of the display panel 2 and reducing the process difficulty.

[0062] In some embodiments, such as Figure 4 , Figure 5 As shown, the auxiliary electrode 33 and the connecting trace 213 are spaced apart. The first touch insulating layer 441 is disposed between the auxiliary electrode 33 and the connecting trace 213, and the second touch insulating layer 443 is disposed between the auxiliary electrode 33 and the connecting trace 213. By spaced apart the auxiliary electrode 33 and the connecting trace 213, and by disposing of the first touch insulating layer 441 and the second touch insulating layer 443 between the auxiliary electrode 33 and the connecting trace 213, short circuits between the auxiliary electrode 33 and the connecting trace 213 can be prevented.

[0063] In some embodiments, such as Figure 4 , Figure 5 As shown, the encapsulation layer 45 includes a first inorganic layer 451, an organic layer 452, and a second inorganic layer 453 arranged sequentially. The first inorganic layer 451 is disposed in the region of the third sub-layer 443c that extends beyond the second sub-layer 443b and is in contact with the second sub-layer 443b. By placing the first inorganic layer 451 in the region of the third sub-layer that extends beyond the second sub-layer and in contact with the second sub-layer, the first inorganic layer 451 is connected to the second touch insulating layer 443. The encapsulation layer and the second touch insulating layer 443 simultaneously protect the light-emitting material portion 432a, which is equivalent to adding a side encapsulation layer and improving the encapsulation effect.

[0064] Specifically, it can be seen that the common electrode layer 434 is disconnected in the area of ​​the third sub-layer that extends beyond the second sub-layer, while the encapsulation layer is continuous in the area of ​​the third sub-layer that extends beyond the second sub-layer, so that the encapsulation layer and the second touch insulating layer 443 together form an encapsulation structure, thereby improving the encapsulation effect.

[0065] In some embodiments, the display panel 2 further includes a color filter layer disposed on the side of the encapsulation layer away from the common electrode layer 434.

[0066] Specifically, the material of the pixel electrode layer 431 can be a stack of indium tin oxide-silver-indium tin oxide.

[0067] Specifically, the sum of the thicknesses of the first touch insulating layer 441, the second touch insulating layer 443, the third touch insulating layer 445, the connecting wiring layer 444, and the touch electrode layer 442 is greater than or equal to 1.5 micrometers.

[0068] Specifically, the light-emitting material layer 432 includes a hole injection layer, a hole transport layer, a charge blocking layer, a light-emitting layer, a hole blocking layer, a charge transport layer, and a charge injection layer. However, the embodiments of this application are not limited to this, and the light-emitting material layer 432 may include a hole layer, an electron layer, and a light-emitting layer.

[0069] Specifically, some film layers in the luminescent material layer 432 can be formed over the entire surface, and correspondingly, some film layers in the luminescent material layer 432 can be broken in the region where the third sublayer extends beyond the second sublayer.

[0070] In some embodiments, such as Figure 5 As shown, the third touch insulating layer 445 is disposed between adjacent pixel electrodes 431a, and the third touch insulating layer 445 overlaps the pixel electrode 431a, and there is a gap between the edge of the third touch insulating layer 445 and the light-emitting material portion.

[0071] In some embodiments, such as Figure 5 As shown, the connecting trace 213 is disposed on the third touch insulating layer 445, and the projection of the connecting trace 213 on the substrate 41 is located within the projection of the third touch insulating layer 445 on the substrate 41.

[0072] In some embodiments, such as Figure 5 As shown, the projected area of ​​the first touch insulating layer 441 on the substrate 41 is smaller than the projected area of ​​the third touch insulating layer 445 on the substrate 41, and the projection of the first touch insulating layer 441 on the substrate 41 is located within the projection of the third touch insulating layer 445 on the substrate 41; thus, space can be reserved for setting the auxiliary electrode 33.

[0073] In some embodiments, when forming the display panel 2, a driving circuit layer 42 and a pixel electrode layer 431 may be formed first, followed by the formation of a third touch insulating layer 445, which is located between adjacent pixel electrodes and overlaps with them. Then, a connection wiring layer 444 is formed, with connection wiring 213 connecting multiple second touch electrodes 212. A first touch insulating layer 441 is then formed on the connection wiring layer 444 to prevent short circuits between the connection wiring layer 444 and the touch electrode layer 442. The area of ​​the first touch insulating layer 441 is smaller than the area of ​​the third touch insulating layer 445, reserving space for the subsequent setting of the auxiliary electrode 33. Then, a touch electrode layer 442 is formed, which forms a first touch electrode 211, a second touch electrode 212, and an auxiliary electrode 33. Then, a second touch insulating layer 443 is formed, which overlaps the auxiliary electrode 33 but does not cover the auxiliary electrode 33, leaving most of the auxiliary electrode 33 exposed. Since the second touch insulating layer 443 is a stack of silicon oxide, silicon nitride, and silicon oxide, during etching, due to the different etching selectivity (the etching rate of silicon nitride is faster, and the etching rate of silicon oxide is relatively slower), the third sublayer and the second sublayer form an undercut structure. When the common electrode layer 434 is formed subsequently, the common electrode layer 434 can be disconnected.

[0074] Then, a pixel definition layer 433 is formed. The pixel definition layer 433 and the support pillars can be formed using a semi-transparent process, or the pixel definition layer 433 can be formed using a non-semi-transparent process. The pixel definition layer 433 is placed on both sides of the touch layer 44. Then, a light-emitting material layer 432 is formed, followed by a common electrode layer 434. The common electrode layer 434 is disconnected at the undercut structure formed by the third sub-layer and the second sub-layer, so that the touch layer 44 is not shielded by the common electrode layer 434. At the same time, although the common electrode layer 434 is disconnected, the common electrode will overlap with the auxiliary electrode 33, reducing the impedance of the common electrode and reducing power consumption. Then, an encapsulation layer is formed, which is connected to the second touch insulating layer 443 to improve the encapsulation effect.

[0075] In some embodiments, such as Figure 4 As shown, the connecting trace 213 is disposed between adjacent pixel electrodes 431a.

[0076] In some embodiments, when forming the display panel 2, a driving circuit layer 42 may be formed first, followed by a pixel electrode layer 431. The pixel definition layer 433 includes pixel electrodes and connection traces 213. Then, a first touch insulating layer 441 is formed on the connection traces 213 to prevent short circuits between the connection traces 213 and the touch electrode layer 442. Finally, the touch electrode layer 442 is formed, comprising a first touch electrode 211, a second touch electrode 212, and an auxiliary electrode 33. Then, a second touch insulating layer 443 is formed. The second touch insulating layer 443 overlaps the auxiliary electrode 33 but does not cover the auxiliary electrode 33, leaving most of the auxiliary electrode 33 exposed. Since the second touch insulating layer 443 is a stack of silicon oxide, silicon nitride, and silicon oxide, during etching, due to the different etching selectivity (the etching rate of silicon nitride is faster, while the etching rate of silicon oxide is relatively slower), the third sublayer and the second sublayer form an undercut structure. When the common electrode layer 434 is subsequently formed, the common electrode layer 434 can be disconnected.

[0077] Then, a pixel definition layer 433 is formed. The pixel definition layer 433 and the support pillars can be formed using a semi-transparent process, or the pixel definition layer 433 can be formed using a non-semi-transparent process. The pixel definition layer 433 is placed on both sides of the touch layer 44. Then, a light-emitting material layer 432 is formed, followed by a common electrode layer 434. The common electrode layer 434 is disconnected at the undercut structure formed by the third sub-layer and the second sub-layer, so that the touch layer 44 is not shielded by the common electrode layer 434. At the same time, although the common electrode layer 434 is disconnected, the common electrode will overlap with the auxiliary electrode 33, reducing the impedance of the common electrode and reducing power consumption. Then, an encapsulation layer is formed, which is connected to the second touch insulating layer 443 to improve the encapsulation effect.

[0078] Specifically, the above embodiments provide a detailed description of the display panel from aspects such as the design of each film layer. When there is no conflict between the embodiments, the embodiments can be combined. For example, the pixel electrode layer includes multiple pixel electrodes and the connection traces. The pixel electrodes are insulated from the connection traces. The second touch insulating layer includes a first sub-layer, a second sub-layer, and a third sub-layer arranged sequentially. The third sub-layer extends beyond the second sub-layer. The common electrode layer includes a common electrode and a floating electrode. The common electrode is arranged corresponding to the light-emitting material portion, and the floating electrode is arranged corresponding to the touch layer. In the area where the third sub-layer extends beyond the second sub-layer, the floating electrode is disconnected from the common electrode.

[0079] Meanwhile, this application provides a display device, which includes a display panel as described in any of the above embodiments.

[0080] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0081] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0082] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0083] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized in that, include: Substrate; A driving circuit layer is disposed on one side of the substrate; A light-emitting functional layer is disposed on the side of the driving circuit layer away from the substrate. The light-emitting functional layer includes a pixel definition layer and a light-emitting material layer disposed sequentially. The pixel definition layer includes a plurality of pixel openings, and the light-emitting material layer includes a plurality of light-emitting material portions disposed within the pixel openings. A touch layer is disposed on the side of the driving circuit layer away from the substrate; An encapsulation layer is disposed on the side of the light-emitting functional layer away from the driving circuit layer; In the region between two adjacent light-emitting material portions, the touch layer is disposed between the driving circuit layer and the encapsulation layer.

2. The display panel according to claim 1, characterized in that, The display panel includes connecting traces, and the touch layer includes: A first touch insulating layer is disposed on the side of the connection trace away from the driving circuit layer; A touch electrode layer is disposed on the side of the first touch insulating layer away from the connection trace, and includes an array of multiple first touch electrodes and multiple second touch electrodes; A second touch insulating layer is disposed between the touch electrode layer and the encapsulation layer; The multiple second touch electrodes located in the same column are connected by the connection traces.

3. The display panel according to claim 2, characterized in that, The light-emitting functional layer further includes a pixel electrode layer, which is disposed between the pixel definition layer and the driving circuit layer. The pixel electrode layer includes a plurality of pixel electrodes and the connection traces, and the pixel electrodes are insulated from the connection traces.

4. The display panel according to claim 2, characterized in that, The display panel includes a connection wiring layer, which is disposed on the side of the driving circuit layer away from the substrate, and the connection wiring layer includes the connection wiring.

5. The display panel according to claim 4, characterized in that, The touch layer further includes a third touch insulating layer, which is disposed between the connection trace layer and the drive circuit layer.

6. The display panel according to any one of claims 2 to 5, characterized in that, The light-emitting functional layer further includes a common electrode layer, which is disposed on the side of the light-emitting material layer away from the pixel definition layer; the second touch insulating layer includes a first sub-layer, a second sub-layer, and a third sub-layer disposed sequentially, wherein the third sub-layer extends beyond the second sub-layer; The common electrode layer includes a common electrode and a floating electrode. The common electrode is disposed corresponding to the light-emitting material portion, and the floating electrode is disposed corresponding to the touch layer. In the region of the third sub-layer that extends beyond the second sub-layer, the floating electrode is disconnected from the common electrode.

7. The display panel according to claim 6, characterized in that, The touch electrode layer also includes an auxiliary electrode, which is connected to the common electrode.

8. The display panel according to claim 7, characterized in that, The second touch insulating layer overlaps the auxiliary electrode, and the area of ​​the overlapping portion of the second touch insulating layer and the auxiliary electrode is smaller than the area of ​​the auxiliary electrode.

9. The display panel according to claim 6, characterized in that, The encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer arranged sequentially. The first inorganic layer is disposed in the region of the third sublayer that extends beyond the second sublayer and is in contact with the second sublayer.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 9.

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