Touch panel and display device

Abstract

The embodiments of the present disclosure provide a touch panel and a display device. The touch panel includes: a display substrate; a conductive layer, located on one side of the display substrate, the conductive layer having a plurality of hollows; a packaging layer, located on the side of the conductive layer away from the display substrate; a touch structure layer, located on the side of the packaging layer away from the display substrate, the touch structure layer including a plurality of touch traces, at least one touch trace corresponding to at least one hollow, the orthographic projection of the touch trace on the display substrate at least partially overlaps with the orthographic projection of the corresponding hollow on the display substrate. In the technical solution of the present disclosure, the relative area between the touch trace and the conductive layer is reduced, the parasitic capacitance between the touch trace and the conductive layer is reduced, which is conducive to keeping the product RC of the capacitance and the resistance at a small value, reducing the load of the touch panel, reducing the charging and discharging time of the touch electrode, and improving the touch performance.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) is a display lighting technology that has gradually developed in recent years. Especially in the display industry, OLED display is considered to have broad application prospects due to its advantages such as high response, high contrast, and flexibility.

[0003] As OLED products gradually expand from mobile phone business to medium and large size such as tablet computers, notebooks, and car-mounted businesses, the size of display screens continues to increase. For mid-to-high-end mobile phones such as mobile phones, the touch function of OLED screens adopts the on-cell design, making the screen thinner and lighter. In particular, the on-cell design is widely used in folding phones. For medium and large size terminals, the screen size is large, and the length of the driving electrode routing (Tx routing) and the sensing electrode routing (Rx routing) required for the touch function is long, and the routing resistance increases, resulting in a large product RC between capacitance and resistance, which reduces the touch performance. Summary of the invention

[0004] Embodiments of the present disclosure provide a touch panel and a display device to solve or alleviate one or more technical problems in the prior art.

[0005] As a first aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a touch panel, including:

[0006] Display substrate;

[0007] A conductive layer is located on one side of the display substrate, and the conductive layer is provided with a plurality of hollows;

[0008] An encapsulation layer, located on a side of the conductive layer away from the display substrate;

[0009] The touch structure layer is located on the side of the packaging layer away from the display substrate. The touch structure layer includes multiple touch lines, at least one touch line corresponds to at least one hollow, and the orthographic projection of the touch line on the display substrate at least partially overlaps with the orthographic projection of the corresponding hollow on the display substrate.

[0010] In some possible implementations, the orthographic projection of the hollowing out on the display substrate is located within the range of the orthographic projection of the corresponding touch trace on the display substrate.

[0011] In some possible implementations, in a direction perpendicular to the extension of the touch line, the indentations of two side boundaries of the hollowing-out portion relative to the corresponding two side boundaries of the touch line are the same.

[0012] In some possible implementations, the hollowing extends along an extension direction of the corresponding touch trace.

[0013] In some possible implementations, at least one touch routing line corresponds to a plurality of hollows, and the plurality of hollows corresponding to the same touch routing line are sequentially spaced apart along an extension direction of the touch routing line.

[0014] In some possible implementations, corresponding to the multiple hollows of the same touch line, a distance between two adjacent hollows is greater than or equal to a width of the touch line.

[0015] In some possible implementations, a plurality of touch lines are connected to form a mesh electrode, in which adjacent touch lines are connected via a connecting portion, and an orthographic projection of the connecting portion on the display substrate does not overlap with an orthographic projection of the hollowing out on the display substrate.

[0016] In some possible implementations, multiple touch lines are connected into a mesh electrode. In the mesh electrode, adjacent touch lines are connected by connecting portions, at least one connecting portion corresponds to at least one hollowing out, and the orthographic projection of the connecting portion on the display substrate at least partially overlaps with the orthographic projection of the corresponding hollowing out on the display substrate.

[0017] In some possible implementations, the display substrate includes a base substrate and a plurality of light-emitting sub-pixels located on one side of the base substrate, a grid area is formed in the mesh electrode, and at least one light-emitting sub-pixel is disposed in at least one grid area.

[0018] In some possible implementations, there are multiple mesh electrodes, the multiple mesh electrodes are arranged in an array, and the multiple mesh electrodes include a first mesh electrode and a second mesh electrode;

[0019] The first mesh electrodes located in the same row or column along a first direction are connected in sequence, and the second mesh electrodes located in the same row or column along a second direction are connected in sequence, and the second direction is not parallel to the first direction.

[0020] In some possible implementations,

[0021] The plurality of touch lines include a first touch line, the first mesh electrode includes a plurality of first touch lines, the plurality of hollows include a first hollow, and the first touch line corresponds to the first hollow; and / or,

[0022] The plurality of touch lines include a second touch line, the second mesh electrode includes a plurality of second touch lines, the plurality of hollows include a second hollow, and the second touch line corresponds to the second hollow.

[0023] In some possible implementations, the touch structure layer includes a bridge layer, an insulating layer, and an electrode layer stacked in sequence in a direction away from the encapsulation layer, and the mesh electrode is located in the electrode layer;

[0024] The connection line between the first mesh electrodes is a first bridge line, and the connection line between the second mesh electrodes is a second bridge line. One of the first bridge line and the second bridge line is located in the electrode layer, and the other is located in the bridge layer.

[0025] In some possible implementations,

[0026] The hollowing includes a third hollowing, at least one first bridge line corresponds to at least one third hollowing, and an orthographic projection of the first bridge line on the display substrate at least partially overlaps with an orthographic projection of the corresponding third hollowing on the display substrate; and / or,

[0027] The hollowing includes a fourth hollowing, at least one second bridge line corresponds to at least one fourth hollowing, and an orthographic projection of the second bridge line on the display substrate at least partially overlaps with an orthographic projection of the corresponding fourth hollowing on the display substrate.

[0028] In some possible implementations, the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer that are stacked in sequence.

[0029] As a second aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a display device, including the touch panel in the embodiments of the present disclosure.

[0030] According to the technical solution of the disclosed embodiment, the relative area between the touch line and the conductive layer is reduced, thereby reducing the parasitic capacitance between the touch line and the conductive layer, which is beneficial for maintaining the product of capacitance and resistance RC at a small value, reducing the touch panel load, shortening the charge and discharge time of the touch electrode, and improving the touch performance.

[0031] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0033] Figure 1 is a structural schematic diagram of a touch panel;

[0034] Figure 2 It is the principle diagram of parallel plate capacitor;

[0035] Figure 3 is a schematic diagram of a planar structure of a touch panel in an embodiment of the present disclosure;

[0036] Figure 4 for Figure 3 An enlarged schematic diagram of part A in FIG.

[0037] Figure 5 for Figure 4 Schematic diagram of BB cross-section structure;

[0038] Figure 6 for Figure 3 A schematic diagram of an enlarged view of part A in another embodiment;

[0039] Figure 7 for Figure 6 Schematic diagram of CC cross section;

[0040] Figure 8 for Figure 3 An enlarged schematic diagram of part D in FIG.

[0041] Fig. 9 for Figure 8 Schematic diagram of EE cross section in;

[0042] Fig.10 for Figure 3 An enlarged schematic diagram of part D in another embodiment;

[0043] Fig.11 for Fig.10 FF cross-sectional diagram in;

[0044] Fig.12 for Figure 3 A magnified schematic diagram of part G in the middle;

[0045] Fig.13 for Fig.12 KK in FIG. 1 is a schematic cross-sectional view of an embodiment.

[0046] Description of reference numerals:

[0047] 11. cathode layer; 12. thin film encapsulation layer; 13. touch line; 20. display substrate; 21. base substrate; 22. first electrode layer; 221. first electrode; 23. pixel defining layer; 231. opening; 241. organic light-emitting layer; 31. conductive layer; 311. first hollowing; 312. second hollowing; 313. third hollowing; 314. fourth hollowing; 32. encapsulation layer; 41. first mesh electrode; 411. first touch line; 412. first connecting portion; 413. first grid area; 414. first bridge line; 42. second mesh electrode; 421. second touch line; 422. second connecting portion; 423. second grid area; 424. second bridge line; 43. buffer layer; 44. bridge layer; 45. insulating layer; 46. protective layer; 50. light-emitting sub-pixel. DETAILED DESCRIPTION

[0048] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure, and different embodiments may be combined arbitrarily without conflict. Therefore, the drawings and descriptions are considered to be illustrative in nature and not restrictive.

[0049] In the related art, for medium and large-sized OLED products, an out-of-cell touch method can be used to increase the distance between the Tx line and the cathode, and the distance between the Rx line and the cathode, thereby reducing the touch capacitance and ensuring that the product RC between the capacitance and the resistance is a small value. However, the use of an out-cell touch method increases the thickness of the module and the bending radius of the screen, which limits the bending performance of OLED products.

[0050] For rigid OLED products, the encapsulation layer can be made of glass, which is thicker. Therefore, when the touch layer is set on the glass, the distance between the touch line and the cathode of the OLED device is larger, which makes the touch capacitance smaller, and thus makes the product RC between the capacitance and the resistance smaller. However, for flexible OLED products, the encapsulation layer needs to use a thin film encapsulation layer (TFE). The thickness of the thin film encapsulation layer is generally 10μm to 20μm. After the touch layer is prepared on the thin film encapsulation layer, the distance between the touch line and the cathode of the OLED device is smaller, which makes the touch capacitance larger, resulting in a larger product RC between the capacitance and the resistance, which reduces the touch performance.

[0051] Figure 1 is a schematic diagram of the structure of a touch panel. Figure 2 This is a schematic diagram of the principle of a parallel plate capacitor. Figure 1As shown, the touch panel can be an OLED touch panel, a thin film encapsulation layer 12 is disposed on the upper side of the cathode layer 11, and a touch line 13 is disposed on the upper side of the thin film encapsulation layer 12. The touch line 13 and the cathode layer 11 generate parasitic capacitance. The capacitance can be understood as a parallel plate capacitor. The principle of a parallel plate capacitor is as follows Figure 2 As shown, S represents the relative area of ​​the two parallel metal plates, d represents the distance between the two parallel metal plates, and the space between the two parallel metal plates is filled with a dielectric with a relative dielectric constant of εr. Assume that the charge is Q (i.e., the two corresponding surfaces of the two parallel metal plates are charged with +Q and -Q respectively), the charge density is σ, and the edge effect is ignored.

[0052] According to Gauss's theorem,

[0053]

[0054] The electric field between two parallel metal plates is expressed as:

[0055]

[0056] The voltage expression between two parallel metal plates is:

[0057]

[0058] Substituting the voltage into the expression for capacitance, we get the capacitance expression for a parallel plate capacitor:

[0059]

[0060] It can be seen from the capacitance expression that the relative area S between the touch line and the cathode is proportional to the magnitude of the parasitic capacitance, and the distance d between the touch line and the cathode is inversely proportional to the magnitude of the parasitic capacitance.

[0061] In order to reduce parasitic capacitance, the area of ​​the touch wiring can be reduced and the virtual wiring area in the touch area can be increased. This approach will reduce the amount of touch signals.

[0062] Based on the problems in the related art, the present disclosure provides a touch panel, including: a display substrate; a conductive layer, located on one side of the display substrate, the conductive layer having a plurality of hollows; a packaging layer, located on the side of the conductive layer away from the display substrate; a touch structure layer, located on the side of the packaging layer away from the display substrate, the touch structure layer including a plurality of touch traces, at least one touch trace corresponding to at least one hollow, and an orthographic projection of the touch trace on the display substrate at least partially overlaps with an orthographic projection of the corresponding hollow on the display substrate.

[0063] Exemplarily, the display substrate may be an OLED display substrate, and the conductive layer may be a cathode layer of an OLED device.

[0064] The touch panel of the disclosed embodiment has a plurality of hollows formed in the conductive layer, and the orthographic projection of the touch line on the display substrate at least partially overlaps with the orthographic projection of the corresponding hollow on the display substrate, thereby reducing the relative area between the touch line and the conductive layer, thereby reducing the parasitic capacitance between the touch line and the conductive layer, which is beneficial for maintaining a small value of the product of capacitance and resistance RC, reducing the load of the touch panel, reducing the charge and discharge time of the touch electrode, and improving the touch performance.

[0065] Compared with the solution of reducing the parasitic capacitance by reducing the touch line, the touch panel of the embodiment of the present disclosure has a wider touch line, which will not reduce the touch signal amount, and is conducive to achieving a higher reporting rate and improving touch performance.

[0066] The touch panel of the embodiment of the present disclosure can be applied to a flexible touch display panel.

[0067] In one implementation, the orthographic projection of the hollowing out on the display substrate is located within the range of the orthographic projection of the corresponding touch wiring on the display substrate.

[0068] In one embodiment, in a direction perpendicular to the extension of the touch line, the indentations of two side boundaries of the hollowing-out portion relative to the corresponding two side boundaries of the touch line are the same.

[0069] In one implementation, the hollowing extends along an extension direction of the corresponding touch trace.

[0070] In one implementation, at least one touch line corresponds to a plurality of hollows, and the plurality of hollows corresponding to the same touch line are sequentially spaced apart along an extension direction of the touch line.

[0071] In one implementation, corresponding to the multiple hollows of the same touch line, the interval between two adjacent hollows is greater than or equal to the width of the touch line.

[0072] In one embodiment, a plurality of touch lines are connected to form a mesh electrode, in which adjacent touch lines are connected via a connecting portion, and an orthographic projection of the connecting portion on the display substrate does not overlap with an orthographic projection of the hollowing out on the display substrate.

[0073] In one embodiment, a plurality of touch lines are connected to form a mesh electrode, in which adjacent touch lines are connected by connecting portions, at least one connecting portion corresponds to at least one hollowing out, and an orthographic projection of the connecting portion on the display substrate at least partially overlaps with an orthographic projection of the corresponding hollowing out on the display substrate.

[0074] In one embodiment, the display substrate includes a base substrate and a plurality of light-emitting sub-pixels located on one side of the base substrate, a grid area is formed in the mesh electrode, and at least one light-emitting sub-pixel is disposed in at least one grid area.

[0075] In one embodiment, there are multiple mesh electrodes, the multiple mesh electrodes are arranged in an array, and the multiple mesh electrodes include a first mesh electrode and a second mesh electrode;

[0076] The first mesh electrodes located in the same row or column along a first direction are connected in sequence, and the second mesh electrodes located in the same row or column along a second direction are connected in sequence, and the second direction is not parallel to the first direction.

[0077] In one implementation, the plurality of touch lines include a first touch line, the first mesh electrode includes a plurality of first touch lines, the plurality of hollows include a first hollow, and the first touch line corresponds to the first hollow.

[0078] In one implementation, the plurality of touch lines include a second touch line, the second mesh electrode includes a plurality of second touch lines, the plurality of hollows include a second hollow, and the second touch line corresponds to the second hollow.

[0079] The following takes the touch lines including the first touch lines and the second touch lines as an example to explain in detail the technical solution of the touch panel of the disclosed embodiment. In the following embodiment, the mesh electrode includes the first mesh electrode and the second mesh electrode, the first mesh electrode includes a plurality of first touch lines, and the second mesh electrode includes a plurality of second touch lines.

[0080] Figure 3 is a schematic diagram of a planar structure of a touch panel in an embodiment of the present disclosure, Figure 4 for Figure 3 An enlarged schematic diagram of part A in FIG. Figure 5 for Figure 4 Schematic diagram of the BB cross-section structure. Figure 4 and Figure 5 As shown, the touch panel may include a display substrate 20, a conductive layer 31, an encapsulation layer 32, and a touch structure layer. The conductive layer 31 is located on one side of the display substrate 20, and the conductive layer 31 is provided with a plurality of hollows, and the plurality of hollows include at least one first hollow 311. The encapsulation layer 32 is located on the side of the conductive layer 31 away from the display substrate 20, the touch structure layer is located on the side of the encapsulation layer 32 away from the display substrate 20, the touch structure layer includes a plurality of touch traces, and the plurality of touch traces include a first touch trace 411. At least one first touch trace 411 corresponds to at least one first hollow 311, and the orthographic projection of the first touch trace 411 on the display substrate 20 at least partially overlaps with the orthographic projection of the corresponding first hollow 311 on the display substrate.

[0081] It should be noted that Figure 4In order to better display the first hollow 311, the upper side of the first hollow 311 is left blank. It can be understood that the first touch line 411 is located on the side of the first hollow 311 away from the display substrate 20. Figure 5 It can be seen that the first touch wiring 411 is located on the upper side of the first hollow 311 .

[0082] It should be noted that at least one first touch wiring 411 corresponds to at least one first hollow 311, and one first touch wiring 411 may correspond to at least one first hollow 311, or multiple first touch wirings 411 may correspond to at least one first hollow 311, or Figure 4 In the illustrated embodiment, each first touch-control trace 411 corresponds to at least one first hollow 311 .

[0083] In the touch panel of the disclosed embodiment, the conductive layer 31 is provided with at least one first hollow 311, and the orthographic projection of at least one first touch wiring 411 on the display substrate 20 at least partially overlaps with the orthographic projection of the corresponding first hollow 311 on the display substrate, so that the relative area between the first touch wiring 411 and the conductive layer 31 is reduced, thereby reducing the parasitic capacitance between the first touch wiring 411 and the conductive layer 31, which is beneficial to keep the product of capacitance and resistance RC at a small value, reduce the load of the touch panel, reduce the charging and discharging time of the touch electrode, and improve the touch performance.

[0084] Compared with the solution of reducing the parasitic capacitance by reducing the touch line, the touch panel of the disclosed embodiment has a wider first touch line 411, which will not reduce the touch signal, thus facilitating a higher reporting rate and improving touch performance.

[0085] In one embodiment, Figure 5 As shown, the conductive layer 31 may be a transparent conductive layer, and the material of the conductive layer 31 may include at least one of indium tin oxide (ITO) and indium tin oxide (IZO).

[0086] In one embodiment, Figure 5 As shown, the encapsulation layer 32 may be a thin film encapsulation layer. For example, the encapsulation layer 32 may include a first inorganic encapsulation layer 321 , an organic encapsulation layer 322 , and a second inorganic encapsulation layer 323 which are sequentially stacked.

[0087] In one embodiment, Figure 4 and Figure 5As shown, the orthographic projection of the first hollow 311 on the display substrate 20 is located within the range of the orthographic projection of the first touch line 411 on the display substrate 20. Exemplarily, the orthographic projection boundary of the first hollow 311 on the display substrate 20 may coincide with the orthographic projection boundary of the first touch line 411 on the display substrate 20, or the orthographic projection boundary of the first hollow 311 on the display substrate 20 is located inside the orthographic projection boundary of the first touch line 411 on the display substrate 20. Such a structural setting can better reduce the relative area between the first touch line 411 and the conductive layer 31, and further reduce the parasitic capacitance between the first touch line 411 and the conductive layer 31.

[0088] In one embodiment, in the extension direction perpendicular to the first touch line 411 , the amount of indentation of the boundary of the first hollow 311 relative to the corresponding boundary of the first touch line 411 can be set as needed, which is not specifically limited here.

[0089] In one embodiment, in a direction perpendicular to the extension of the first touch line 411, the indentation amounts of the two side boundaries of the first hollow 311 relative to the corresponding two side boundaries of the first touch line 411 may be the same. Figure 5 As shown, the left side boundary of the first hollow 311 is retracted by d1 relative to the left side boundary of the first touch line 411, and the right side boundary of the first hollow 311 is retracted by d2 relative to the right side boundary of the first touch line 411, and d1 and d2 may be the same.

[0090] In one embodiment, Figure 4 As shown, the first hollow 311 can extend along the extension direction of the corresponding first touch line 411. Therefore, the orthographic projection of the first hollow 311 on the display substrate 20 can always be located within the range of the orthographic projection of the first touch line 411 on the display substrate 20, and the relative area between the first touch line 411 and the conductive layer 31 can be minimized.

[0091] exist Figure 4 In the illustrated embodiment, a first touch-sensing trace 411 corresponds to a first hollow 311 .

[0092] Figure 6 for Figure 3 A portion of the enlarged schematic diagram of another embodiment. In one embodiment, as Figure 6As shown, one first touch line 411 may correspond to multiple first hollows 311. Multiple first hollows 311 corresponding to the same first touch line 411 are arranged in sequence along the extension direction of the first touch line 411. The multiple first hollows 311 are arranged in sequence, and the relative area between the first touch line 411 and the conductive layer 31 is reduced, while the connection area of ​​the conductive layer 31 is increased, thereby ensuring the performance of the conductive layer 31.

[0093] In the specific implementation, the inventor of this case found through verification that when the display substrate 20 and the first touch line 411 lack the isolation of the conductive layer 31, part of the voltage of the display substrate 20 will interfere with the peak position of the touch electrode, resulting in serious noise when the display screen presents HLK / 1W1B / 2W2B and other screens, and the data voltage jump will cause the noise coupled to the touch electrode to have co-frequency interference. Among them, the HLK screen is the Microsoft HLK certification screen, 1W1B is a black and white screen with one row of black and one row of white or one column of black and one column of white alternating with each other, and 2W2B is a black and white screen with two rows of black and two rows of white or two columns of black and two columns of white alternating with each other.

[0094] Figure 7 for Figure 6 Schematic diagram of CC cross section in FIG. Figure 5 , Figure 6 and Figure 7 As shown, the display substrate 20 may include a base substrate 21 and a plurality of light-emitting sub-pixels 50 located on one side of the base substrate 21. The plurality of first hollows 311 corresponding to the same first touch wiring 411 are arranged to be spaced in sequence along the extension direction of the first touch wiring 411, so that there is always a conductive layer 31 between the first touch wiring 411 and the display substrate 20, thereby avoiding interference between the display substrate 20 and the first touch wiring 411 due to lack of isolation of the conductive layer 31, and improving the display effect.

[0095] In one embodiment, Figure 6 As shown, corresponding to the multiple first hollows 311 of the same first touch line 411, the spacing between two adjacent first hollows 311 is greater than or equal to the width of the first touch line 411, and the width of the first touch line 411 is the dimension of the first touch line 411 in a direction perpendicular to its extension direction.

[0096] In one embodiment, Figure 4 or Figure 6As shown, a plurality of first touch lines 411 may be connected to form a first mesh electrode 41, and the first mesh electrode 41 includes a first connecting portion 412. In the first mesh electrode, adjacent first touch lines 411 are connected through the first connecting portion 412. The orthographic projection of the first connecting portion 412 on the display substrate 20 does not overlap with the orthographic projection of the first hollowing 311 on the display substrate 20. Exemplarily, the orthographic projection of the first connecting portion 412 on the display substrate 20 does not overlap with the orthographic projection of all hollowings on the display substrate 20.

[0097] In the case of the first mesh electrode 41, the first mesh area of ​​the first mesh electrode 41 is a conductive layer, and the first hollowing out 311 is located between the conductive layers in two adjacent first mesh areas. The orthographic projection of the first connecting portion 412 on the display substrate 20 is set to not overlap with the orthographic projection of the first hollowing out 311 on the display substrate 20, so that there is no hollowing out at the position of the first connecting portion 412, which can ensure that the conductive layers in the two adjacent first mesh areas can be connected as a whole through the conductive layer at the position of the first connecting portion 412, thereby ensuring the integration of the conductive layer 31 and reducing the resistance of the conductive layer 31.

[0098] In one embodiment, Figure 6 As shown, a plurality of first touch lines 411 can be connected to form a first mesh electrode 41, and the first mesh electrode 41 includes a first connecting portion 412. In the first mesh electrode, adjacent first touch lines 411 are connected through the first connecting portion 412. The hollowing may also include a fifth hollowing, and at least one first connecting portion 412 corresponds to at least one fifth hollowing (not shown in the figure), and the orthographic projection of the first connecting portion 412 on the display substrate 20 overlaps at least partially with the orthographic projection of the corresponding fifth hollowing on the display substrate 20. In this way, the parasitic capacitance between the first mesh electrode 41 and the conductive layer 31 can be further reduced, which is conducive to keeping the product RC of the capacitance and the resistance at a small value, reducing the load of the touch panel, reducing the charging and discharging time of the touch electrode, and improving the touch performance.

[0099] In one embodiment, Figure 6 or Figure 7 As shown, the display substrate 20 includes a base substrate 21 and a plurality of light-emitting sub-pixels 50 located on one side of the base substrate 21. The first touch wiring 411 can be located between adjacent light-emitting sub-pixels 50. Therefore, the first touch wiring 411 will not affect the light emitted by the light-emitting sub-pixels 50, thereby ensuring the light output rate of the product.

[0100] Exemplarily, each first touch line 411 is located between adjacent light-emitting sub-pixels 50. Thus, the material of the first touch line 411 can be metal, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) and molybdenum (Mo), or alloy materials of the above metals, such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb). Selecting the first touch line 411 made of metal material can reduce the resistance of the first touch line 411 and improve the performance of the touch electrode.

[0101] In one embodiment, Figure 5 or Figure 7 As shown, the display substrate may include a base substrate 21, a first electrode layer 22, a pixel defining layer 23, and an organic light-emitting layer 241. The first electrode layer 22 is located on one side of the base substrate 21, and the first electrode layer 22 may include a plurality of first electrodes 221 arranged at intervals. The pixel defining layer 23 is located on the side of the first electrode layer 22 away from the base substrate 21, and the pixel defining layer 23 is provided with a plurality of openings 231, and the plurality of openings 231 correspond to the plurality of first electrodes 221 one by one, and the first electrodes 221 are exposed through the corresponding first openings 231. The organic light-emitting layer 241 is located on the side of the pixel defining layer 23 away from the base substrate 21, and the organic light-emitting layer 241 is located in the corresponding openings 231. The conductive layer 31 may be located on the side of the organic light-emitting layer 241 away from the base substrate 21, and the conductive layer 31 may be a second electrode layer.

[0102] For example, the light-emitting sub-pixel 50 may be an OLED device, and the light-emitting sub-pixel may include a corresponding first electrode 221, an organic light-emitting layer 241, and a second electrode layer. The display substrate may be an OLED display substrate.

[0103] Figure 5 and Figure 7 The structure of the light-emitting sub-pixel is shown only as an example. It should be noted that in other embodiments, the light-emitting sub-pixel is not limited to OLED devices. The light-emitting sub-pixel can also be a quantum dot light-emitting diode (QLED), a light-emitting diode (LED) and other types of light-emitting devices.

[0104] For example, Figure 6 As shown, a first mesh region 413 is formed in the first mesh electrode 41, and at least one light-emitting sub-pixel 50 is disposed in at least one first mesh region 413. Figure 3It can be seen that a plurality of first mesh regions 413 are formed in the first mesh electrode 41, and a light-emitting sub-pixel 50 is disposed in at least one first mesh region 413, and the number of light-emitting sub-pixels 50 disposed in the first mesh region 413 may be one or more. With such a structure, the mesh region size of the first mesh electrode 41 can be set as required. When the size of the light-emitting sub-pixel 50 is large, one or a small number of light-emitting sub-pixels 50 can be disposed in one first mesh region 413, and when the size of the light-emitting sub-pixel 50 is small, more light-emitting sub-pixels 50 can be disposed in one first mesh region 413, thereby improving the setting flexibility of the first mesh electrode 41.

[0105] Figure 8 for Figure 3 An enlarged schematic diagram of part D in FIG. Fig. 9 for Figure 8 EE cross-sectional diagram in FIG. In one embodiment, as Figure 8 and Fig. 9 As shown, the plurality of hollows may further include at least one second hollow 312. The plurality of touch traces may further include a second touch trace 421, at least one second touch trace 421 corresponds to at least one second hollow 312, and the orthographic projection of the second touch trace 421 on the display substrate 20 at least partially overlaps with the orthographic projection of the corresponding second hollow 312 on the display substrate 20.

[0106] In such a touch panel, the relative area between the second touch wiring 421 and the conductive layer 31 is reduced, which reduces the parasitic capacitance between the second touch wiring 421 and the conductive layer 31, which is beneficial to keep the product of capacitance and resistance RC at a small value, reduce the touch panel load, shorten the charge and discharge time of the touch electrode, and improve the touch performance.

[0107] It should be noted that at least one second touch wiring 421 corresponds to at least one second hollow 312, and one second touch wiring 421 may correspond to at least one second hollow 312, or multiple second touch wirings 421 may correspond to at least one second hollow 312, or Figure 8 In the illustrated embodiment, each second touch-sensing trace 421 corresponds to at least one second hollow 312 .

[0108] In one embodiment, Figure 8 and Fig. 9As shown, the orthographic projection of the second hollow 312 on the display substrate 20 is located within the range of the orthographic projection of the second touch line 421 on the display substrate 20. Exemplarily, the orthographic projection boundary of the second hollow 312 on the display substrate 20 may coincide with the orthographic projection boundary of the second touch line 421 on the display substrate 20, or the orthographic projection boundary of the second hollow 312 on the display substrate 20 is located inside the orthographic projection boundary of the second touch line 421 on the display substrate 20. Such a structural setting can better reduce the relative area between the second touch line 421 and the conductive layer 31, and further reduce the parasitic capacitance between the second touch line 421 and the conductive layer 31.

[0109] In one embodiment, in the extension direction perpendicular to the second touch line 421 , the amount of indentation of the boundary of the second hollow 312 relative to the corresponding boundary of the second touch line 421 can be set as needed, which is not specifically limited here.

[0110] In one embodiment, in a direction perpendicular to the extension direction of the second touch line 421, the indentation amounts of the two side boundaries of the second hollow 312 relative to the corresponding two side boundaries of the second touch line 421 may be the same. Fig. 9 As shown, the left side boundary of the second hollow 312 is retracted by d3 relative to the left side boundary of the second touch trace 421, and the right side boundary of the second hollow 312 is retracted by d4 relative to the right side boundary of the second touch trace 421, and d3 and d4 may be the same.

[0111] In one embodiment, Figure 8 As shown, the second hollow 312 can extend along the extension direction of the corresponding second touch line 421. Therefore, the orthographic projection of the second hollow 312 on the display substrate 20 can always be located within the range of the orthographic projection of the second touch line 421 on the display substrate 20, and the relative area between the second touch line 421 and the conductive layer 31 can be minimized.

[0112] exist Figure 8 In the illustrated embodiment, one second touch-sensing trace 421 corresponds to one second hollow 312 .

[0113] Fig.10 for Figure 3 FIG. 1 is an enlarged schematic diagram of part D in another embodiment. In one embodiment, Fig.10As shown, one second touch line 421 may correspond to a plurality of second hollows 312. The plurality of second hollows 312 corresponding to the same second touch line 421 are sequentially arranged at intervals along the extension direction of the second touch line 421. The plurality of second hollows 312 are arranged sequentially at intervals, and while the relative area between the second touch line 421 and the conductive layer 31 is reduced, the connection area of ​​the conductive layer 31 is increased, thereby ensuring the performance of the conductive layer 31.

[0114] Fig.11 for Fig.10 FF cross-sectional diagram in FIG. Fig.11 As shown, a plurality of second hollowings 312 corresponding to the same second touch line 421 are arranged to be spaced apart in sequence along the extension direction of the second touch line 421, so that a conductive layer 31 is always present between the second touch line 421 and the display substrate 20, thereby avoiding interference between the display substrate 20 and the second touch line 421 due to lack of isolation of the conductive layer 31, and improving the display effect.

[0115] In one embodiment, Fig.10 As shown, corresponding to the multiple second hollowings 312 of the same second touch line 421, the spacing between two adjacent second hollowings 312 is greater than or equal to the width of the second touch line 421, and the width of the second touch line 421 is the dimension of the second touch line 421 in a direction perpendicular to its extension direction.

[0116] In one embodiment, Figure 8 or Fig.10 As shown, a plurality of second touch lines 421 can be connected to form a second mesh electrode 42. In the second mesh electrode, the second mesh electrode 42 includes a second connection portion 422, and adjacent second touch lines 421 are connected through the second connection portion 422. The orthographic projection of the second connection portion 422 on the display substrate 20 does not overlap with the orthographic projection of the second hollow 312 on the display substrate 20. Exemplarily, the orthographic projection of the second connection portion 422 on the display substrate 20 does not overlap with the orthographic projection of all hollows on the display substrate 20.

[0117] In one embodiment, Fig.10As shown, a plurality of second touch lines 421 can be connected to form a second mesh electrode 42, in which the second mesh electrode 42 includes a second connection portion 422, and adjacent second touch lines 421 are connected through the second connection portion 422. The hollowing may also include a sixth hollowing, at least one second connection portion 422 corresponds to at least one sixth hollowing (not shown in the figure), and the orthographic projection of the second connection portion 422 on the display substrate 20 overlaps at least partially with the orthographic projection of the corresponding sixth hollowing on the display substrate 20. In this way, the parasitic capacitance between the second mesh electrode 42 and the conductive layer 31 can be further reduced, which is conducive to keeping the product RC of the capacitance and the resistance at a small value, reducing the load of the touch panel, reducing the charging and discharging time of the touch electrode, and improving the touch performance.

[0118] In one implementation, the second touch wiring 421 may be located between adjacent light-emitting sub-pixels 50. Thus, the second touch wiring 421 will not affect the light emitted by the light-emitting sub-pixels 50, thereby ensuring the light extraction rate of the product.

[0119] Exemplarily, each second touch line 421 is located between adjacent light-emitting sub-pixels 50. Thus, the material of the second touch line 421 can be metal, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) and molybdenum (Mo), or alloy materials of the above metals, such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb). Selecting the second touch line 421 made of metal material can reduce the resistance of the second touch line 421 and improve the performance of the touch electrode.

[0120] For example, Fig.10 and Fig.11 As shown, a second mesh region 423 is formed in the second mesh electrode 42, and at least one light-emitting sub-pixel 50 is disposed in at least one second mesh region 423. Fig.10 It can be seen that a plurality of second mesh regions 423 are formed in the second mesh electrode 42, and a light-emitting sub-pixel 50 is disposed in at least one second mesh region 423, and the number of light-emitting sub-pixels 50 disposed in the second mesh region 423 may be one or more. With such a structure, the mesh region size of the second mesh electrode 42 can be set as required. When the size of the light-emitting sub-pixel 50 is large, one or a small number of light-emitting sub-pixels 50 can be disposed in one second mesh region 423, and when the size of the light-emitting sub-pixel 50 is small, more light-emitting sub-pixels 50 can be disposed in one second mesh region 423, thereby improving the setting flexibility of the second mesh electrode 42.

[0121] In one embodiment, Figure 3As shown, there are multiple mesh electrodes, which are arranged in an array, and the multiple mesh electrodes include a first mesh electrode 41 and a second mesh electrode 42. There can be multiple first mesh electrodes 41, which can be arranged in an array, and there can be multiple second mesh electrodes 42, which can be arranged in an array.

[0122] Exemplarily, the first mesh electrodes 41 in the same row or column along the first direction X are connected in sequence, and the second mesh electrodes 42 in the same row or column along the second direction Y are connected in sequence, and the second direction Y is not parallel to the first direction X.

[0123] For example, in Figure 3 The first direction X may be a horizontal direction, and the second direction Y may be a vertical direction. The first mesh electrodes 41 in the same row along the first direction X are connected in sequence, and the second mesh electrodes 42 in the same column along the second direction Y are connected in sequence.

[0124] exist Figure 3 In the illustrated embodiment, the first direction X and the second direction Y are perpendicular to each other. It should be noted that the first direction and the second direction are not limited to be perpendicular to each other, as long as they are not parallel.

[0125] It should be noted that in Figure 3 In the illustrated embodiment, the first mesh electrodes 41 located in the same row along the first direction X are connected in sequence, and the second mesh electrodes 42 located in the same column along the second direction Y are connected in sequence. In other embodiments, by setting the arrangement positions of the first mesh electrodes 41 and the second mesh electrodes 42, the first mesh electrodes 41 located in the same column can be connected in sequence, and the second mesh electrodes 42 located in the same row can be connected in sequence.

[0126] Fig.12 for Figure 3 The enlarged schematic diagram of part G in the figure. Fig.13 for Fig.12 A schematic cross-sectional view of KK in one embodiment. In one embodiment, Figure 5 , Figure 7 , Fig. 9 , Fig.11 and Fig.13 As shown, the touch control structure layer includes a bridge layer 44, an insulating layer 45 and an electrode layer stacked in sequence in a direction away from the encapsulation layer 32. For example, a buffer layer 43 may be further disposed between the encapsulation layer 32 and the bridge layer 44.

[0127] In one embodiment, the first mesh electrode 41 and the second mesh electrode 42 may be located in the same layer, for example, the first mesh electrode 41 and the second mesh electrode 42 may be located in the electrode layer. One of the first mesh electrode 41 and the second mesh electrode 42 may be a driving electrode (Tx electrode), and the other may be a sensing electrode (Tx electrode). Correspondingly, one of the first touch control trace 411 and the second touch control trace 421 may be a driving electrode trace (Tx trace), and the other may be a sensing electrode trace (Rx trace).

[0128] In one embodiment, the connection line between the first mesh electrodes 41 is a first bridge line 414 , and the connection line between the second mesh electrodes 42 is a second bridge line 424 . One of the first bridge line 414 and the second bridge line 424 is located in the electrode layer, and the other is located in the bridge layer 44 .

[0129] In one embodiment, the first bridge line 414 may be located at the bridge layer 44, and the second bridge line 424 may be located at the electrode layer. Fig.13 shown.

[0130] In one embodiment, Fig.13 As shown, the touch control structure layer may further include a protective layer 46, and the protective layer 46 is located on a side of the electrode layer away from the display substrate 20. The protective layer 46 may protect the mesh electrode.

[0131] In one embodiment, Fig.13 As shown, the hollowing out may also include a third hollowing out 313 , at least one first bridging line 414 corresponds to at least one third hollowing out 313 , and the orthographic projection of the first bridging line 414 on the display substrate 20 at least partially overlaps with the orthographic projection of the corresponding third hollowing out 313 on the display substrate 20 . Fig.13 The boundary of the third hollow 313 is shown in FIG.

[0132] In one embodiment, Fig.13 As shown, the hollowing out may also include a fourth hollowing out 314 , at least one second bridging line 424 corresponds to at least one fourth hollowing out 314 , and the orthographic projection of the second bridging line 424 on the display substrate 20 at least partially overlaps with the orthographic projection of the corresponding fourth hollowing out 314 on the display substrate 20 . Fig.13 The boundary of the fourth hollow 314 is shown in FIG.

[0133] It should be noted that Fig.13The first bridge line 414 shown in the figure corresponds to two third hollows 313. In a specific embodiment, the number of third hollows 313 corresponding to the first bridge line 414 and the size of the third hollows 313 can be set as needed. The number of fourth hollows 314 corresponding to the second bridge line 424 and the size of the fourth hollows 314 can be set as needed.

[0134] It should be noted that the first bridge line 414 and the second bridge line 424 are located in different layers, and there may be an overlapping area between the first bridge line 414 and the second bridge line 424. In the overlapping area between the first bridge line 414 and the second bridge line 424, the third hollow 313 and the fourth hollow 314 may have a common part.

[0135] For example, Figure 5 , Figure 7 , Fig. 9 , Fig.11 and Fig.13 As shown, the touch panel in this embodiment can adopt an FMLOC (Flexible Multi-Layer On Cell) structure, that is, a touch structure layer is provided on the OLED display substrate to realize the touch function of the display panel.

[0136] The touch panel in the disclosed embodiment, when applied to an OLED product, can reduce the parasitic capacitance between the driving electrode wiring and the cathode of the OLED, and can reduce the parasitic capacitance between the sensing electrode wiring and the cathode of the OLED, thereby reducing the product RC between the capacitance and the resistance, reducing the touch panel load, and shortening the charge and discharge time of the touch electrode, which is conducive to achieving a high reporting rate and improving touch performance.

[0137] The disclosed embodiment also provides a method for preparing a touch panel, comprising: forming a conductive layer on one side of a display substrate, the conductive layer having a plurality of hollows; forming an encapsulation layer on a side of the conductive layer away from the display substrate; forming a touch structure layer on a side of the encapsulation layer away from the display substrate, the touch structure layer comprising a plurality of touch traces, the orthographic projection of the touch traces on the display substrate at least partially overlapping with the orthographic projection of the corresponding hollows on the display substrate.

[0138] Below Figure 7 The embodiment is used as an example to explain the method for preparing the touch panel in detail. It is understandable that the "patterning" mentioned herein includes processes such as coating photoresist, mask exposure, development, etching, and stripping photoresist when the patterned material is an inorganic material or metal, and includes processes such as mask exposure and development when the patterned material is an organic material. The evaporation, deposition, coating, and coating mentioned herein are all mature preparation processes in the relevant technology.

[0139] A display substrate 20 is provided, and a conductive layer 31 is formed on one side of the display substrate 20. The conductive layer 31 has a plurality of hollows. Exemplarily, the conductive layer 31 may be formed by a patterning process.

[0140] The encapsulation layer 32 is formed on the side of the conductive layer 31 facing away from the display substrate 20 .

[0141] A touch structure layer is formed on the side of the encapsulation layer 32 away from the display substrate 20. The touch structure layer includes touch traces. The orthographic projection of the touch traces on the display substrate at least partially overlaps with the orthographic projection of the corresponding hollowing on the display substrate. For example, the touch traces can be formed by a patterning process.

[0142] Based on the inventive concept of the above embodiments, the embodiments of the present disclosure further provide a display device, which includes the touch panel of the above embodiments. The display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc.

[0143] In the description of this specification, "at least one" can be understood as one or more or each.

[0144] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0145] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0146] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0147] In the present disclosure, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0148] The disclosure above provides many different embodiments or examples to implement different structures of the present disclosure. In order to simplify the present disclosure, the components and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0149] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A touch panel, characterized in that: include: Display substrate; A conductive layer, located on one side of the display substrate, the conductive layer having a plurality of hollows; an encapsulation layer, located on a side of the conductive layer away from the display substrate; a touch structure layer, located on a side of the encapsulation layer away from the display substrate, the touch structure layer comprising a plurality of touch traces, at least one of the touch traces corresponding to at least one of the hollows, and an orthographic projection of the touch trace on the display substrate at least partially overlapping with an orthographic projection of the corresponding hollow on the display substrate; Among them, at least one of the touch lines corresponds to a plurality of the hollows, and the plurality of hollows corresponding to the same touch line are arranged in sequence and spaced apart along an extension direction of the touch line.

2. The touch panel according to claim 1, characterized in that: The orthographic projection of the hollow on the display substrate is located within the range of the orthographic projection of the corresponding touch wiring on the display substrate.

3. The touch panel according to claim 2, characterized in that: In a direction perpendicular to the extension of the touch line, the two side boundaries of the hollowing have the same amount of indentation relative to the corresponding two side boundaries of the touch line.

4. The touch panel according to claim 1, characterized in that: The hollowing extends along an extending direction of the corresponding touch control wiring.

5. The touch panel according to claim 1, characterized in that: Corresponding to the multiple hollows of the same touch line, a distance between two adjacent hollows is greater than or equal to a width of the touch line.

6. The touch panel according to any one of claims 1 to 5, characterized in that: A plurality of the touch lines are connected to form a mesh electrode. In the mesh electrode, adjacent touch lines are connected via a connecting portion, and the orthographic projection of the connecting portion on the display substrate does not overlap with the orthographic projection of the hollow on the display substrate.

7. The touch panel according to claim 5, characterized in that: A plurality of the touch lines are connected to form a mesh electrode, in which adjacent touch lines are connected by connecting parts, at least one of the connecting parts corresponds to at least one of the hollowings, and the orthographic projection of the connecting part on the display substrate at least partially overlaps with the orthographic projection of the corresponding hollowing on the display substrate.

8. The touch panel according to claim 6, characterized in that: The display substrate comprises a base substrate and a plurality of light-emitting sub-pixels located on one side of the base substrate. A grid area is formed in the mesh electrode, and at least one of the light-emitting sub-pixels is arranged in at least one of the grid areas.

9. The touch panel according to claim 6, characterized in that: The number of the mesh electrodes is multiple, the multiple mesh electrodes are arranged in an array, and the multiple mesh electrodes include a first mesh electrode and a second mesh electrode; The first mesh electrodes located in the same row or column along a first direction are connected in sequence, and the second mesh electrodes located in the same row or column along a second direction are connected in sequence, and the second direction is not parallel to the first direction.

10. The touch panel according to claim 9, characterized in that: The plurality of touch lines include a first touch line, the first mesh electrode includes a plurality of the first touch lines, the plurality of hollows include a first hollow, and the first touch line corresponds to the first hollow; and / or, The plurality of touch lines include a second touch line, the second mesh electrode includes a plurality of the second touch lines, the plurality of hollows include a second hollow, and the second touch line corresponds to the second hollow.

11. The touch panel according to claim 9, characterized in that: The touch structure layer includes a bridge layer, an insulating layer and an electrode layer stacked in sequence in a direction away from the packaging layer, and the mesh electrode is located in the electrode layer; The connection line between the first mesh electrodes is a first bridge line, and the connection line between the second mesh electrodes is a second bridge line. One of the first bridge line and the second bridge line is located in the electrode layer, and the other is located in the bridge layer.

12. The touch panel according to claim 11, characterized in that: The hollowing includes a third hollowing, at least one of the first bridge wires corresponds to at least one of the third hollowing, and an orthographic projection of the first bridge wire on the display substrate at least partially overlaps with an orthographic projection of the corresponding third hollowing on the display substrate; and / or, The hollowing includes a fourth hollowing, at least one of the second bridging lines corresponds to at least one of the fourth hollowing, and an orthographic projection of the second bridging line on the display substrate at least partially overlaps with an orthographic projection of the corresponding fourth hollowing on the display substrate.

13. The touch panel according to claim 1, characterized in that: The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer which are stacked in sequence.

14. A display device, characterized in that: A touch panel comprising any one of claims 1-13.

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