OLED touch display panel and touch display device

Abstract

The embodiment of the present application provides an OLED touch display panel and a touch display device, wherein the OLED touch display panel includes: a plurality of color filter units arranged at intervals; a black matrix arranged between adjacent color filter units; a first conductive layer arranged on one side of the black matrix; a second conductive layer arranged on the side of the black matrix away from the first conductive layer; and the second conductive layer is electrically connected to the first conductive layer to form a touch structure. The OLED touch display panel provided by the embodiment of the present application has a black matrix arranged between adjacent color filter units, a first conductive layer and a second conductive layer respectively arranged on both sides of the black matrix, and the second conductive layer is electrically connected to the first conductive layer to form a touch structure, so that the touch function can be realized on the OLED display panel without affecting the display effect of the OLED panel, while reducing the thickness of the OLED touch display panel, thereby realizing the thinness of the touch display product.

Description

Technical Field

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

[0002] With the development of display technology, OLED (Organic Light Emitting Display) display panels have the advantages of self-luminescence, low power consumption, wide viewing angle, high clarity and contrast, and bendability and foldability, and have attracted widespread attention and application. As the technology becomes more and more mature, OLED display panels are gradually becoming a new generation of display technology.

[0003] In portable electronic products such as mobile phones, tablet computers, and e-books, touch input has gradually replaced traditional mechanical key input methods, and integrating touch functions into display devices is one of the current technological trends. Touch screens can be divided into external touch screens and embedded touch screens according to their composition structure. Among them, the external touch screen is to produce the touch screen and the display screen separately, and then bond them together to form a display screen with touch function. The external touch screen has the disadvantages of high production cost, low light transmittance, and thicker modules. The embedded touch screen embeds the touch electrode of the touch screen inside the display screen, which can not only reduce the overall thickness of the module, but also reduce the production cost of the touch screen, and is therefore favored by major panel manufacturers.

[0004] However, in the prior art, for an organic light emitting diode (OLED) display panel, a touch layer is embedded in a cathode layer or an anode layer. Since the touch circuit is distributed in the light emitting area, the light emission and display effect of the OLED display panel are affected. Therefore, it is necessary to propose an improved OLED touch display panel to solve this technical problem. Summary of the invention

[0005] The embodiments of the present application provide an OLED touch display panel and a touch display device. By setting the touch layer on both sides of the black matrix, the display effect of the OLED display panel is not affected, and the thickness of the OLED touch display panel is reduced, thereby realizing a lightweight and thin touch display product.

[0006] The embodiment of the present application provides an OLED touch display panel, comprising:

[0007] A plurality of color filter units, wherein the plurality of color filter units are arranged at intervals;

[0008] A black matrix is ​​disposed between adjacent color filter units;

[0009] A first conductive layer, disposed on one side of the black matrix;

[0010] A second conductive layer is disposed on a side of the black matrix away from the first conductive layer;

[0011] Wherein, the second conductive layer is electrically connected to the first conductive layer to form a touch control structure.

[0012] In some embodiments, the second conductive layer includes a first conductive unit and a second conductive unit, the first conductive unit is electrically connected to the first conductive layer, and the first conductive unit is electrically insulated from the second conductive unit to form a lateral capacitive touch structure.

[0013] In some embodiments, the black matrix is ​​provided with at least one penetrating via hole, a conductor is provided in the via hole, and the first conductive unit is electrically connected to the first conductive layer through the conductor in the via hole.

[0014] In some embodiments, the OLED touch display panel further includes a first inorganic layer, and the first inorganic layer is disposed on a side of the first conductive layer away from the black matrix.

[0015] In some embodiments, the OLED touch display panel further includes an OLED device layer, and the OLED device layer is disposed on a side of the first inorganic layer away from the first metal layer.

[0016] In some embodiments, the OLED touch display panel further includes a second inorganic layer, and the second inorganic layer is disposed on a side of the second conductive layer away from the black matrix.

[0017] In some embodiments, the OLED touch display panel further includes a cover plate, and the cover plate is disposed on a side of the second inorganic layer away from the second metal layer.

[0018] In some embodiments, the first conductive layer and the second conductive layer are made of transparent conductive materials.

[0019] In some embodiments, the first conductive layer and the second conductive layer are made of metal materials.

[0020] An embodiment of the present application further provides a touch display device, comprising any one of the above-mentioned OLED touch display panels.

[0021] The embodiments of the present application provide an OLED touch display panel and a touch display device, wherein a black matrix is ​​arranged between adjacent color filter units, a first conductive layer is arranged on one side of the black matrix, and a second conductive layer is arranged on a side of the black matrix away from the first conductive layer, wherein the second conductive layer is electrically connected to the first conductive layer to form a touch structure. Therefore, a touch function can be implemented on the OLED display panel without affecting the display effect of the OLED panel, and at the same time, the thickness of the OLED touch display panel is reduced, thereby realizing a lightweight and thin touch display product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0023] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0024] Figure 1 A schematic diagram of a first stacking layer of an OLED touch display panel provided by an embodiment of the present invention.

[0025] Figure 2 for Figure 1 Schematic diagram of the arrangement of filter units in the color filter layer.

[0026] Figure 3 for Figure 1 Another schematic diagram of the arrangement of the filter units of the color filter layer is shown.

[0027] Figure 4 A schematic diagram of touch electrodes in an OLED touch display panel provided by an embodiment of the present invention.

[0028] Figure 5 A schematic diagram of another touch electrode in an OLED touch display panel provided by an embodiment of the present invention.

[0029] Figure 6 A schematic diagram of a second stacking method of an OLED touch display panel provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0031] The embodiment of the present application provides an OLED touch display panel, which can be set in a device that requires touch and display, such as a smart phone, a tablet computer, an e-book, a handheld computer, etc., to realize the touch and display functions of the device.

[0032] refer to Figures 1 to 3 , Figure 1 A schematic diagram of a first stacking layer of an OLED touch display panel provided by an embodiment of the present invention, Figure 2 for Figure 1 The color filter unit arrangement diagram of the color filter layer shown in FIG. Figure 3 for Figure 1 Another schematic diagram of the arrangement of the color filter units of the color filter layer is shown.

[0033] The OLED touch display panel includes a substrate 10, an OLED device layer 20, a first inorganic layer 30 and a color filter layer 40, wherein the OLED device layer 20 is arranged on the substrate 10, the first inorganic layer 30 is arranged on the side of the OLED device away from the substrate 10, and the color filter layer 40 is arranged on the side of the first inorganic layer 30 away from the OLED device.

[0034] The present application embodiment does not specifically limit the material of the substrate 10. For example, the substrate 10 may be a flexible substrate, and its material may be at least one of PI (polyimide), PET (polyethylene glycol terephthalate), PEN (polyethylene naphthalate), PC (polycarbonate), PES (polyether sulfone), PAR (aromatic fluorotoluene containing polyarylate), or PCO (polycyclic olefin). The substrate 10 may also be a rigid substrate made of glass, quartz, or other materials.

[0035] Preferably, the substrate 10 is a flexible substrate, and the material is PI (polyimide), which can be ordinary polyimide or photosensitive polyimide.

[0036] The OLED device layer 20 includes a plurality of light-emitting units for emitting light of different colors, and the light-emitting units may specifically include an anode, a cathode, and a light-emitting layer disposed between the anode and the cathode. According to the light-emitting principle, the light-emitting layer may be an organic light-emitting layer or a quantum dot light-emitting layer, or a combination of an organic light-emitting layer and a quantum dot light-emitting layer. Furthermore, at least one of a hole injection layer, a hole transport layer, and an electron blocking layer may be disposed between the anode and the light-emitting layer, and at least one of an electron injection layer, an electron transport layer, and a hole blocking layer may be disposed between the cathode and the light-emitting layer. The OLED device layer 20 has the same structure as that of the existing OLED device, and will not be described in detail.

[0037] The first inorganic layer 30 is disposed on the side of the OLED device layer 20 away from the substrate 10. Since the first inorganic layer 30 has a high density, it can better isolate water vapor and oxygen, and prevent water vapor and oxygen in the air from penetrating into the OLED device layer 20, so as to improve the water and oxygen corrosion resistance of the display panel. Among them, the first inorganic layer 30 can be formed of transparent ceramic materials such as SiNx, SiOx, SiOxNy, and / or can be formed of transparent metal oxide materials such as Al2O3, TiO2, MgO, CrO, etc. The formation method of the first inorganic layer 30 includes but is not limited to inkjet printing (IJP), physical vapor deposition (PVD) or chemical vapor deposition (CVD) or atomic layer deposition (ALD) and other existing conventional technologies, which are not specifically limited here.

[0038] In the embodiment of the present application, the thickness of the first inorganic layer 30 is in the range of 0.1 to 2 micrometers.

[0039] Continue to refer Figures 1 to 3 The color filter layer 40 is arranged on the side of the first inorganic layer 30 away from the OLED device. The color filter layer 40 includes a plurality of color filter units 41 and a black matrix 42. The plurality of color filter units 41 are arranged at intervals, and the black matrix 42 is arranged between adjacent color filter units 41.

[0040] The color filter unit 41 includes a red filter unit 411, a green filter unit 412 and a blue filter unit 413, and the red filter unit 411, the green filter unit 412 and the blue filter unit 413 are arranged at intervals and in an array. It should be noted that the black matrix 42 is also called a black color resistance, and the color filter units 41 are color resistances of corresponding colors. The color filter layer 40 can be prepared by conventional photolithography processes, which will not be described in detail here.

[0041] It should be noted that the black matrix 42 can absorb the light emitted by the light-emitting unit of the OLED device layer 20 to prevent the light emitted by the light-emitting unit from traveling to adjacent light-emitting units, thereby reducing or preventing color mixing to improve display quality.

[0042] Please refer to Figure 2 Exemplarily, the red filter unit 411, the green filter unit 412 and the blue filter unit 413 are arranged in a matrix, and each row of the red filter unit 411, the green filter unit 412 and the blue filter unit 413 are alternately arranged from left to right, each column is a filter unit of the same color, and a black matrix 42 is between every two rows and columns.

[0043] Please refer to Figure 3 Exemplarily, the red filter unit 411, the green filter unit 412 and the blue filter unit 413 are arranged in a diamond shape, the colors of every two adjacent filter units are different, and there is a black matrix 42 between every two adjacent filter units.

[0044] It should be noted that the arrangement of the red filter unit 411 , the green filter unit 412 and the blue filter unit 413 is not limited to the two arrangements shown in the figure, and the arrangement of the color filter unit 41 matches the OLED light-emitting unit.

[0045] Since the color of the light allowed to pass through the color filter unit 41 is consistent with the color of the light emitted by the light-emitting unit, when the external ambient light enters the interior of the OLED display panel, part of it is absorbed by the black matrix 42, and the remaining part is filtered out by the color filter unit 41, leaving only a small part of light of a single color to pass through. The small part of light that enters the interior of the OLED display panel loses part of its light intensity when reflected inside the display panel. When it is emitted again, the reflected light is absorbed again by the black matrix 42 and filtered again by the color filter unit 41, thereby further reducing the intensity of the emitted reflected light, thereby ensuring the contrast of the OLED display panel and the OLED display device.

[0046] Please combine Figure 1 And refer to Figure 4 and Figure 5 , Figure 4 A schematic diagram of touch electrodes in an OLED touch display panel provided by an embodiment of the present invention, Figure 5 A schematic diagram of another touch electrode in an OLED touch display panel provided by an embodiment of the present invention.

[0047] The OLED touch display panel provided in the embodiment of the present application further includes a first conductive layer 50 and a second conductive layer 60, wherein the first conductive layer 50 is disposed on the side of the black matrix 42 facing the first inorganic layer 30, and the second conductive layer 60 is disposed on the side of the black matrix 42 facing away from the first conductive layer 50, wherein the second conductive layer 60 is electrically connected to the first conductive layer 50 to form a touch structure. It should be noted that the black matrix 42 is made of an insulating material, and the first conductive layer 50 and the second conductive layer 60 are respectively located on both sides of the black matrix 42 to form a touch layer.

[0048] It should be noted that, since the first conductive layer 50 and the second conductive layer 60 are respectively disposed on both sides of the black matrix 42, the touch structure formed is a mutual capacitance touch structure, which can realize more than five-point touch. At the same time, the first conductive layer 50 and the second conductive layer 60 are both located in the non-luminous area, so they do not affect the display effect of the OLED display panel, and can also reduce the thickness of the OLED touch display panel.

[0049] In the embodiment of the present application, the black matrix 42 is provided with at least one through-hole 521, a conductor is provided in the through-hole 521, and the second conductive layer 60 is electrically connected to the first conductive layer 50 through the conductor in the through-hole 521. It can also be understood that the first conductive layer 50 is exposed at the position of the through-hole 521 of the black matrix 42, and a pad of the first conductive layer 50 is formed, and the second conductive layer 60 fills the through-hole 521 and realizes electrical conduction with the first conductive layer 50.

[0050] In the embodiment of the present application, the second conductive layer 60 includes a first conductive unit 61 and a second conductive unit 62, the first conductive unit 61 is electrically connected to the first conductive layer 50, and the first conductive unit 61 and the second conductive unit 62 are electrically insulated, wherein the first conductive unit 61 and the second conductive unit 62 can form a lateral capacitive touch structure. When the first conductive layer 50 and the second conductive layer 60 are connected to the external circuit, the first conductive unit 61 and the adjacent second conductive unit 62 can form a lateral sensing capacitor to facilitate touch sensing.

[0051] In some embodiments, the first conductive unit 61 is located at the periphery of the second conductive unit 62, and a certain distance is reserved between the first conductive unit 61 and the second conductive unit 62, so that the first conductive unit 61 and the second conductive unit 62 are electrically insulated from each other. The second conductive unit 62 is arranged in parallel with the first conductive layer 50, and is distributed on both sides of the black matrix 42, so the second conductive unit 62 is electrically insulated from the first conductive layer 50. When the first conductive layer 50 and the second conductive layer 60 are connected to the external circuit, the first conductive unit 61 and the second conductive unit 62 at the periphery can form a lateral sensing capacitor, and the second conductive unit 62 and the first conductive layer 50 can also form a sensing capacitor, further enhancing the sensing capacitance value, so as to facilitate touch sensing.

[0052] In some embodiments, the black matrix 42 is provided with at least one through-hole 521, a conductor is provided in the through-hole 521, the first conductive unit 61 is electrically connected to the first conductive layer 50 through the conductor in the through-hole 521, and the second conductive unit 62 is located in a non-via 521 area. Therefore, the first conductive unit 61 can be electrically connected to the first conductive layer 50, while the second conductive unit 62 is electrically insulated from the first conductive layer 50, the first conductive unit 61 and the second conductive unit 62 can form a lateral inductive capacitor, and the second conductive unit 62 can also form an inductive capacitor with the first conductive layer 50, so as to realize the touch function of the OLED display template.

[0053] In the embodiment of the present application, the black matrix 42 is disposed between adjacent color filter units 41, and the first conductive layer 50 and the second conductive layer 60 are respectively disposed on both sides of the black matrix 42, wherein the second conductive layer 60 is electrically connected to the first conductive layer 50 to form a touch structure. By arranging the touch structure on both sides of the black matrix 42, the touch function can be realized on the OLED display panel without affecting the display effect of the OLED panel, while reducing the thickness of the OLED touch display panel, and realizing the thinness of the touch display product.

[0054] In the actual manufacturing process, a first conductive layer 50 is formed on the side of the first inorganic layer 30 away from the OLED device by any process such as physical vapor deposition (PVD), chemical vapor deposition (CVD), or atomic layer deposition (ALD), and the first conductive layer 50 is patterned by a photolithography process to form a plurality of first touch electrodes 51. A black color resist is coated on the first touch electrodes 51, and the black color resist is patterned by a photolithography process to form a black matrix 42. It should be noted that the first touch electrodes 51 correspond to the black matrix 42, and preferably, the first touch electrodes 51 do not exceed the area of ​​the black matrix 42.

[0055] A second touch electrode 63 is disposed on the side of the black matrix 42 away from the first touch electrode 51. A second conductive layer 60 is formed on the side of the first inorganic layer 30 away from the OLED device by using any one of physical vapor deposition (PVD), chemical vapor deposition (CVD), or atomic layer deposition (ALD), and the second conductive layer 60 is patterned by using a photolithography process to form a plurality of second touch electrodes 63. It should be noted that the second touch electrodes 63 correspond to the black matrix 42, and preferably, the second touch electrodes 63 do not exceed the area of ​​the black matrix 42.

[0056] In the embodiment of the present application, the first touch electrode 51 and the second touch electrode 63 are respectively located on both sides of the black matrix 42, and the black matrix 42 is provided with at least one through-hole 521, and a conductor is provided in the through-hole 521, and the second touch electrode 63 is electrically connected to the first touch electrode 51 through the conductor in the through-hole 521. It can also be understood that the first touch electrode 51 is exposed at the position of the through-hole 521 of the black matrix 42 to form a pad of the first touch electrode 51, and the second touch electrode 63 fills the through-hole 521 and realizes electrical conduction with the first touch electrode 51.

[0057] Continue to refer Figure 4 and Figure 5 According to the arrangement of the color filter unit 41, the shape of the black matrix 42 will be different, and the shapes of the first touch electrode 51 and the second touch electrode 63 formed on the black matrix 42 will also be different. Figure 4 When the color filter unit 41 is arranged in a crisscross pattern, the black matrix 42 is in a crisscross pattern, the first touch electrodes 51 are arranged vertically, and the second touch electrodes 63 are arranged horizontally, or the first touch electrodes 51 are arranged horizontally, and the second touch electrodes 63 are arranged vertically. Figure 5 When arranged in this manner, the black matrix 42 formed is relative to Figure 4 The pattern is tilted at a certain angle, and the first touch electrode 51 and the second touch electrode 63 are also tilted at a certain angle. It should be noted that the first touch electrode 51 and the second touch electrode 63 are respectively located on both sides of the black matrix 42, and the shape of the first electrode can be the same as that of the second electrode, or different from that of the second electrode.

[0058] It should be noted that the arrangement and shape of the touch electrodes are not limited to Figure 4 and Figure 5 As shown in the two embodiments, the touch electrode needs to match the light-emitting unit and the color filter layer 40 of the OLED display panel, depending on the actual design requirements.

[0059] In the embodiment of the present application, by arranging the first touch electrode 51 and the second touch electrode 63 on both sides of the black matrix 42, the luminous effect of the OLED display panel is not affected, and the touch function is embedded in the color filter layer 40, and a separate touch panel is not required. The thickness of the OLED touch display panel can be reduced, and the touch display product can be made thin and light.

[0060] In the embodiment of the present application, the materials of the first conductive layer 50 and the second conductive layer 60 can be materials commonly used in the conductive layer of the current touch screen, such as semiconductor materials or metal materials. For example, the materials of the first conductive layer 50 and the second conductive layer 60 can be transparent conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), and gallium zinc oxide (GZO), or metals or alloys such as Ag, Al, Zn, Cu, and Cu / Al, but are not limited thereto.

[0061] It should be noted that the materials of the first conductive layer 50 and the second conductive layer 60 may be the same or different. For example, the material of the first conductive layer 50 is the transparent conductive material indium tin oxide (ITO), and the material of the second conductive layer 60 is the metal Cu; or the material of the first conductive layer 50 and the material of the second conductive layer 60 are both the transparent conductive material indium tin oxide (ITO); or the material of the first conductive layer 50 and the material of the second conductive layer 60 are both the metal Cu.

[0062] The first conductive layer 50 and the second conductive layer 60 can be prepared by existing processes such as sputtering, vapor deposition, photolithography, dry etching, etc., which will not be described in detail here.

[0063] refer to Figure 1 and Figure 6 The OLED touch display panel provided in the embodiment of the present application further includes a second inorganic layer 70, which is disposed on the side of the second conductive layer 60 away from the black matrix 42. The second conductive layer 60 encapsulates the touch layer, which can prevent the touch layer from being scratched during the manufacturing process and improve the stability of the touch screen structure and performance. It can be understood that the second inorganic layer 70 is preferably able to completely cover the touch layer to achieve effective protection.

[0064] At the same time, the second inorganic layer 70 has a high density and can be used to isolate water vapor and oxygen, preventing water vapor and oxygen in the air from penetrating into the touch layer to improve its resistance to water and oxygen corrosion. Among them, the second inorganic layer 70 can be formed of transparent ceramic materials such as SiNx, SiOx, SiOxNy, and / or can be formed of transparent metal oxide materials such as Al2O3, TiO2, MgO, CrO, etc. The formation method of the second inorganic layer 70 includes but is not limited to inkjet printing (IJP), physical vapor deposition (PVD) or chemical vapor deposition (CVD) or atomic layer deposition (ALD) and other existing conventional technologies, which are not specifically limited here.

[0065] Exemplarily, the thickness of the second inorganic layer 70 is in the range of 0.1 to 2 micrometers.

[0066] Please refer to Figure 6The OLED touch display panel further includes a cover plate 80, which is disposed on a side of the second inorganic layer 70 away from the second metal layer, and the cover plate 80 is attached to the second inorganic layer 70 through an adhesive layer. The cover plate 80 may be a glass cover plate 80, an acrylic plate or other film with strong scratch resistance. The adhesive layer may be an optically transparent adhesive, which is colorless and transparent and does not affect the light transmittance of the OLED display panel.

[0067] The present application also provides a touch display device, which includes an OLED touch display panel, wherein the OLED touch display panel is the OLED touch display panel provided in any of the previous embodiments. The touch display device can be, but is not limited to, an e-book, a smart phone tablet computer, a PDA, a laptop computer, a smart wearable device, etc.

[0068] The embodiment of the present application provides an OLED touch display panel and a touch display device, wherein a black matrix is ​​disposed between adjacent color filter units, a first conductive layer is disposed on one side of the black matrix, and a second conductive layer is disposed on a side of the black matrix away from the first conductive layer, wherein the second conductive layer is electrically connected to the first conductive layer to form a touch structure. By disposing the touch structure on the black matrix, the touch function is integrated with the OLED display panel without affecting the display effect of the OLED panel, and at the same time, the thickness of the OLED touch display panel is reduced, thereby realizing a thin and light touch display product.

[0069] In the above embodiments, the description of each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. In the description of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0070] The OLED touch display panel and touch display device provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An OLED touch display panel, characterized in that: include: A plurality of color filter units, wherein the plurality of color filter units are arranged at intervals; A black matrix is ​​disposed between adjacent color filter units; A first conductive layer, disposed on one side of the black matrix; A second conductive layer is disposed on a side of the black matrix away from the first conductive layer; Wherein, the second conductive layer is electrically connected to the first conductive layer to form a touch control structure; The second conductive layer includes a first conductive unit and a second conductive unit, the first conductive unit is electrically connected to the first conductive layer, and the first conductive unit is electrically insulated from the second conductive unit to form a lateral capacitive touch structure; A first conductive unit and a second conductive unit are correspondingly arranged between adjacent color filter units. The first conductive unit is located at the periphery of the second conductive unit, and the first conductive unit and the second conductive unit are arranged at intervals.

2. The OLED touch display panel according to claim 1, characterized in that: The black matrix is ​​provided with at least one through-hole, a conductor is provided in the via hole, and the first conductive unit is electrically connected to the first conductive layer through the conductor in the via hole.

3. The OLED touch display panel according to claim 1 or 2, characterized in that: The OLED touch display panel further includes a first inorganic layer, which is arranged on a side of the first conductive layer away from the black matrix.

4. The OLED touch display panel according to claim 3, characterized in that: The OLED touch display panel further includes an OLED device layer, and the OLED device layer is arranged on a side of the first inorganic layer away from the first metal layer.

5. The OLED touch display panel according to claim 1 or 2, characterized in that: The OLED touch display panel further includes a second inorganic layer, and the second inorganic layer is arranged on a side of the second conductive layer away from the black matrix.

6. The OLED touch display panel according to claim 5, characterized in that: The OLED touch display panel further includes a cover plate, which is arranged on a side of the second inorganic layer away from the second metal layer.

7. The OLED touch display panel according to claim 1 or 2, characterized in that: The first conductive layer and the second conductive layer are made of transparent conductive material.

8. The OLED touch display panel according to claim 1 or 2, characterized in that: The first conductive layer and the second conductive layer are made of metal material.

9. A touch display device, characterized in that: An OLED touch display panel comprising any one of claims 1 to 8.

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