Touch display panel and display device

Abstract

The application provides a touch display panel and a display device. The touch display panel comprises a light emitting unit arranged on an array substrate and an encapsulation layer arranged on the light emitting unit, and further comprises a touch electrode and a first light shielding insulation layer arranged on the encapsulation layer, wherein the first light shielding insulation layer is arranged on a side of the touch electrode away from the encapsulation layer. The touch display panel provided by the application reduces the reflectivity of ambient light, increases the light emitting viewing angle, and solves the problems of high reflectivity and small light emitting viewing angle in the prior art.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a touch display panel and display device. Background Technology

[0002] Displays have been widely used in many fields such as portable electronic devices (e.g., mobile communication terminals, tablets, e-books, and navigation devices) and large-screen electronic devices. Among them, organic light-emitting diodes (OLEDs) are gradually being used in displays due to their excellent properties such as low power consumption, high color saturation, wide viewing angle, thinness, and flexibility.

[0003] Currently, OLED touch displays mainly include a touch panel (TP) and a display panel. The display panel mainly includes an array substrate, several light-emitting units disposed on the array substrate, and an encapsulation layer covering the light-emitting units and the array substrate. Each light-emitting unit includes an anode layer, an organic light-emitting layer, and a cathode layer stacked on the array substrate. Due to the reflection of ambient light by the metal layer in the touch electrode and the surface of the cathode layer, the display has the problem of high reflectivity of ambient light and small light-emitting angle of the light-emitting units. Summary of the Invention

[0004] This invention provides a touch display panel and display device that reduces ambient light reflection, expands the light emission viewing angle, and solves the problems of high reflectivity and small light emission viewing angle in existing touch display panels.

[0005] To achieve the above objectives, the present invention provides a touch display panel, comprising a light-emitting unit disposed on an array substrate, an encapsulation layer located on the light-emitting unit, and further comprising:

[0006] A touch electrode and a first light-shielding insulating layer are disposed on an encapsulation layer, wherein the first light-shielding insulating layer is disposed on at least a portion of the touch electrode on the side opposite to the encapsulation layer.

[0007] The touch display panel provided by this invention further includes touch electrodes disposed on an encapsulation layer and a first light-shielding insulating layer. The first light-shielding insulating layer is disposed on the side of at least a portion of the touch electrodes facing away from the encapsulation layer. Thus, when incident light enters the top layer of the touch display panel, the first light-shielding insulating layer blocks the incident light, preventing the touch electrodes, which are covered by the first light-shielding insulating layer, from reflecting the incident light. Compared with the prior art, in this invention, the first light-shielding insulating layer covers at least a portion of the touch electrodes, reducing the area of ​​the touch metal layer in the touch display panel that reflects incident light, thereby significantly reducing the reflectivity of the incident light. Simultaneously, because the distance between the first light-shielding insulating layer and the light-emitting unit is reduced, the light-emitting viewing angle of the touch display panel is increased. Therefore, the touch display panel provided in this embodiment reduces the reflectivity of ambient light, increases the light-emitting viewing angle, and solves the problems of high reflectivity and small light-emitting viewing angle in existing touch display panels.

[0008] In the aforementioned display panel for fingerprint recognition, optionally, the touch electrode includes a touch driving electrode and a touch sensing electrode arranged in a double-layer cross-insulation configuration, and the first light-shielding insulating layer is disposed on the side of the touch driving electrode and the touch sensing electrode facing away from the encapsulation layer.

[0009] In the aforementioned display panel for fingerprint recognition, optionally, the touch electrode includes a bridge metal layer and touch driving electrodes and touch sensing electrodes arranged in a cross manner, wherein the first light-shielding insulating layer is disposed on the side of the touch driving electrodes and the touch sensing electrodes away from the encapsulation layer, and the bridge metal layer is disposed on the side of the first light-shielding insulating layer away from the encapsulation layer.

[0010] In the aforementioned display panel for fingerprint recognition, optionally, the width of the orthographic projection area of ​​the bridge metal layer on the first light-shielding insulating layer is smaller than the width of the first light-shielding insulating layer.

[0011] In the aforementioned display panel for fingerprint recognition, optionally, the bridge metal layer includes two connecting portions and a bridge portion located between the two connecting portions.

[0012] In the aforementioned display panel for fingerprint recognition, optionally, the width of the orthographic projection area of ​​the bridge portion on the first light-shielding insulating layer is smaller than the width of the orthographic projection area of ​​the connecting portion on the first light-shielding insulating layer.

[0013] In the aforementioned display panel for fingerprint recognition, optionally, the first light-shielding insulating layer has a via, which is used to electrically connect the connecting portion to the touch driving electrode or the touch sensing electrode, so as to connect the disconnection point in the touch driving electrode or the touch sensing electrode.

[0014] In the aforementioned display panel for fingerprint recognition, optionally, the side of the bridge metal layer facing away from the first light-shielding insulating layer has a concave-convex structure, and the concave-convex structure includes at least an arc-shaped protrusion.

[0015] Optionally, in the aforementioned display panel for fingerprint recognition, a second light-shielding insulating layer is provided on the bridge metal layer;

[0016] The width of the orthographic projection area of ​​the second light-shielding insulating layer on the bridge metal layer is greater than or equal to the width of the bridge metal layer.

[0017] The present invention also provides a display device, including any of the touch display panels described above.

[0018] The structure of the present invention, as well as its other inventive objects and beneficial effects, will become more apparent from the description of preferred embodiments taken in conjunction with the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1A This is a cross-sectional structural diagram of an existing touch display panel;

[0021] Figure 1B This is a schematic diagram of another cross-sectional structure of an existing touch display panel;

[0022] Figure 2 This is a top view of the touch panel structure on the display panel in the touch display panel provided in Embodiment 1 of the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0024] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0025] Figure 5 for Figure 2 A schematic diagram of the cross-sectional structure along the CC direction;

[0026] Figure 6 This is another cross-sectional structural diagram of the touch display panel provided in Embodiment 1 of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10 - Array substrate; 20 - Light-emitting unit; 21 - Pixel defining layer; 30 - Encapsulation layer;

[0029] 40 - Touch electrode; 41 - Rx electrode; 42 - Tx electrode; 43 - Disconnect point;

[0030] 50 - First light-shielding insulating layer; 60 - Protective layer; 70 - Filter layer; 70a - Blue filter layer;

[0031] 70b - Red filter layer; 70c - Green filter layer; 80 - Bridging metal layer; 81 - Connector;

[0032] 82 - Bridge section; 90, 90a, 90b - Second light-shielding insulation layer. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be described in more detail below with reference to the accompanying drawings of the preferred embodiments. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0035] Example 1

[0036] Figure 2 This is a top view of the touch panel structure on the display panel provided in Embodiment 1 of the present invention. Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the AA direction. Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure along the BB direction. Figure 5 for Figure 2A schematic diagram of the cross-sectional structure along the CC direction. Figure 6 This is another cross-sectional structural diagram of the touch display panel provided in Embodiment 1 of the present invention.

[0037] During their research, the inventors of this invention discovered that current touch display panels suffer from high reflectivity and narrow viewing angles. Their research revealed that the cause of these problems lies in existing touch display panels, such as... Figure 1A As shown, when the touch panel 6 (TP) is placed on the filter 5 (CF) and the black matrix 4 (BM), the touch panel 6 contains touch electrodes, which include two metal layers: M1 and M2. The M2 metal layer includes a touch driving electrode (Tx electrode) and a touch sensing electrode (Rx electrode). The M1 metal layer is a bridging metal layer. The Tx and Rx electrodes are intersected on the same plane, but to prevent connection at the overlapping points, the arrangement is... Often, one of the Tx and Rx electrodes is disconnected at the overlap. A bridging metal layer (M1 metal layer) is used to connect the disconnected Tx and Rx electrodes. Therefore, existing touch display panels often have multiple metal layers. When ambient light enters the touch panel, the incident light is easily reflected off the touch metal layer and emitted outwards, resulting in a high reflectivity of the touch display panel. When the touch panel 6 (TP) is placed below the filter 5 (CF) and the black matrix 4 (BM), such as... Figure 1B As shown, the touch panel 6 is located between the encapsulation layer 3 and the filter 5. However, this results in a large distance between the light-emitting unit 2 disposed on the array substrate 1 and the second light-shielding insulating layer 4, thereby causing a smaller light-emitting angle a2.

[0038] Based on the above findings and existing technical problems, the embodiments of the present invention provide the following solutions: (Refer to...) Figures 2-5 As shown, this embodiment of the invention provides a touch display panel, which includes a plurality of light-emitting units 20 disposed on an array substrate 10 and an encapsulation layer 30 located on the light-emitting units 20. The light-emitting units 20 are separated by a pixel limiting layer 21. Therefore, in this embodiment, the encapsulation layer 30 covers the pixel limiting layer 21 and the light-emitting units 20.

[0039] This embodiment further includes: touch electrodes 40 and a first light-shielding insulating layer 50 disposed on the encapsulation layer 30. Specifically, both the touch electrodes 40 and the first light-shielding insulating layer 50 are disposed on the encapsulation layer 30. The first light-shielding insulating layer 50 is disposed on the side of at least a portion of the touch electrodes 40 facing away from the encapsulation layer 30. Specifically, the first light-shielding insulating layer 50 can be disposed on the side of a portion of the touch electrodes 40 facing away from the encapsulation layer 30, meaning the first light-shielding insulating layer 50 covers the side of a portion of the touch electrodes 40 facing away from the encapsulation layer 30. Alternatively, the first light-shielding insulating layer 50 can be disposed on the side of all touch electrodes 40 facing away from the encapsulation layer 30, meaning the first light-shielding insulating layer 50 is disposed on the side of all touch electrodes 40 facing away from the encapsulation layer 30. Therefore, in this embodiment, at least a portion of the touch electrodes 40 facing away from the encapsulation layer 30 is covered by the first light-shielding insulating layer 50. This allows the first light-shielding insulating layer 50 to block incident light, preventing at least a portion of the touch electrodes 40 in the touch display panel from reflecting incident light, unlike existing... Figure 1A and Figure 1B In contrast, in this embodiment, the area of ​​the metal layer in the touch electrode 40 that can reflect incident light is greatly reduced, which reduces the reflectivity of the touch display panel to ambient light and makes the display effect of the touch display panel better.

[0040] Meanwhile, in this embodiment, since at least part of the touch electrode 40 is shielded from the encapsulation layer 30 by the first light-shielding insulating layer 50, and the first light-shielding insulating layer 50 is located on the encapsulation layer 30, the first light-shielding insulating layer 50 and the light-emitting unit 20 are separated by the encapsulation layer 30 (while... Figure 1B In the middle, the second light-shielding insulating layer is separated from the light-emitting unit 20 by the touch panel 6 and the encapsulation layer 303, so it is compatible with existing... Figure 1B In contrast, in this embodiment, the distance between the first light-shielding insulating layer 50 and the light-emitting unit 20 is greatly reduced, thus making the light-emitting viewing angle a3 in this embodiment greater than that of the light-emitting unit 20. Figure 1B The luminescence angle a2 in the middle, at the same time, the existing Figure 1A In the previous embodiment, the distance between the touch electrode 40 and the light-emitting unit 20 was relatively large, resulting in a smaller light-emitting viewing angle a1. However, in this embodiment, the distance between the first light-shielding insulating layer 50 and the light-emitting unit 20 is much smaller than that in the existing embodiments. Figure 1A The distance between the central touch electrode 40 and the light-emitting unit 20, therefore, compared with existing... Figure 1A Compared to the touch display panel shown, the light-emitting viewing angle a3 in this embodiment is greater than that of the touch display panel shown. Figure 1A The luminescence angle a1 in the image.

[0041] Therefore, the touch display panel provided in this embodiment reduces reflectivity and increases the viewing angle.

[0042] In this embodiment, the touch display panel further includes a light filter layer 70, which is specifically located on the encapsulation layer 30 and the first light-shielding insulating layer 50. The light filter layer 70 may specifically include a red light filter layer 70b, a green light filter layer 70c, and a blue light filter layer 70a, with adjacent light filter layers separated by the first light-shielding insulating layer 50.

[0043] In this embodiment, the first light-shielding insulating layer 50 is specifically a black insulating layer, that is, made of black insulating material. This not only provides insulation for the touch electrode 40 and the bridge metal layer 80, but also provides light-shielding, thus separating the filter layer and allowing the first light-shielding insulating layer 50 to block light. Alternatively, in this embodiment, the first light-shielding insulating layer 50 can also be made of other non-transparent insulating materials.

[0044] Therefore, the touch display panel provided in this embodiment further includes touch electrodes 40 disposed on the encapsulation layer 30 and a first light-shielding insulating layer 50. The first light-shielding insulating layer 50 is disposed on the side of at least a portion of the touch electrodes 40 facing away from the encapsulation layer 30. In this way, when incident light enters the top layer of the touch display panel, the first light-shielding insulating layer 50 blocks the incident light, preventing the touch electrodes 40 blocked by the first light-shielding insulating layer 50 from reflecting the incident light. Compared with the prior art, in this invention, the first light-shielding insulating layer 50 covers at least a portion of the touch electrodes 40 on the side facing away from the encapsulation layer 30, reducing the area of ​​the touch metal layer in the touch display panel that reflects the incident light, thereby greatly reducing the reflectivity of the incident light. At the same time, since the distance between the first light-shielding insulating layer 50 and the light-emitting unit 20 is reduced, the light-emitting angle of the touch display panel is increased. Therefore, the touch display panel provided in this embodiment reduces the reflectivity of ambient light, increases the light-emitting angle, and solves the problems of high reflectivity and small light-emitting angle in existing touch display panels.

[0045] Furthermore, based on the above embodiments, in this embodiment, as follows: Figures 2-5 As shown, the touch electrode 40 includes a bridge metal layer 80 and Tx electrodes 42 (i.e., touch driving electrodes) and Rx electrodes 41 (i.e., touch sensing electrodes) arranged in a cross manner. One of the Tx electrodes 42 and Rx electrodes 41 is often disconnected at the overlapping point. The disconnection point is connected through the bridge metal layer 80, which avoids the problem of electrical connection at the overlapping point when the Tx electrodes 42 and Rx electrodes 41 are arranged on the same plane.

[0046] In this embodiment, the first light-shielding insulating layer 50 is disposed on the side of the Tx electrode 42 and Rx electrode 41 away from the encapsulation layer 30, and the bridge metal layer 80 is disposed on the side of the first light-shielding insulating layer 50 away from the encapsulation layer 30. That is, the first light-shielding insulating layer 50 wraps part of the touch electrode 40 away from the encapsulation layer 30, and the bridge metal layer 80 is used to connect the disconnection point 43 in the Tx electrode 42 and Rx electrode 41.

[0047] In this embodiment, the bridging metal layer 80 may only be disposed on the first light-shielding insulating layer 50 located on the disconnected touch electrode 40, and the bridging metal layer 80 may not be disposed on the other parts of the first light-shielding insulating layer 50. Alternatively, the bridging metal layer 80 may be disposed on the entire first light-shielding insulating layer 50, but the bridging metal layer 80 is only electrically connected to the touch electrode 40 with the disconnection point 43. In this embodiment, Figure 2 Only a portion of the bridging metal layer 80 is shown. In practical applications, the bridging metal layer 80 is used to connect any point where there is a break 43. It should be noted that, in this embodiment, the arrangement of the Tx electrode 42 and the Rx electrode 41 includes, but is not limited to, the following: Figure 2 Similarly, in the structure shown, the location of the breakpoint 43 in the Tx electrode 42 and Rx electrode 41 is not limited to... Figure 2 The location shown.

[0048] In this embodiment, as Figure 2 As shown, there is a break point 43 on the Tx electrode 42. In this case, a first light-shielding insulating layer 50 can be provided on the side of the Tx electrode 42 away from the encapsulation layer 30. Then, a bridge metal layer 80 is provided on the side of the first light-shielding insulating layer 50 away from the encapsulation layer 30, and both ends of the bridge metal layer 80 are electrically connected to the Tx electrodes 42 on both sides of the break point 43. Thus, the break point 43 of the Tx electrode 42 is connected through the bridge metal layer 80. In this embodiment, as shown... Figure 2 As shown, the Tx electrode 42 has a break point 43 between points d1 and d2. At this point, one end of the bridge metal layer 80 can be electrically connected to the Tx electrode 42 at point d1, and the other end of the bridge metal layer 80 can be electrically connected to the Tx electrode 42 at point d2, or it can also be electrically connected to the Tx electrode 42 at point d3. In this embodiment, as shown... Figure 2 As shown, the other end of the bridge metal layer 80 is electrically connected to the Tx electrode 42 at point d4, so that the disconnection point 43 of the Tx electrode 42 is connected through the bridge metal layer 80. In this embodiment, the position where the bridge metal layer 80 is electrically connected to the Tx electrode 42 or the Rx electrode 41 can ensure that the disconnected electrode is connected.

[0049] In this embodiment, since the first light-shielding insulating layer 50 covers both the Tx electrode 42 and the Rx electrode 41 on the side facing away from the encapsulation layer 30, only the bridge metal layer 80, which is not covered by the first light-shielding insulating layer 50, will reflect the incident light. Since the bridge metal layer 80 has a small area, it is similar to existing... Figure 1A and Figure 1B In contrast, in this embodiment, the area of ​​the touch metal layer that reflects incident light is greatly reduced, which lowers the reflectivity of the touch display panel to ambient light and makes the display effect of the touch display panel better.

[0050] Furthermore, based on the above embodiments, in this embodiment, as follows: Figure 4 As shown, when the widths of the bridging metal layer 80 and the first light-shielding insulating layer 50 are the same, the distance between the bridging metal layer 80 and the light-emitting unit 20 is greater than the distance between the first light-shielding insulating layer 50 and the light-emitting unit 20. Consequently, the resulting light-emitting angle a3 is smaller than the light-emitting angle formed between the first light-shielding insulating layer 50 and the light-emitting unit 20. Therefore, in this embodiment, to further increase the light-emitting angle, as... Figure 3 and Figure 4 As shown, the width D2 of the orthogonal projection area of ​​the bridge metal layer 80 on the first light-shielding insulating layer 50 is smaller than the width D1 of the first light-shielding insulating layer 50. In this way, the bridge metal layer 80 does not affect the light-emitting angle. At this time, in the touch display panel, the light-emitting angle is only affected by the first light-shielding insulating layer 50. Since the distance between the first light-shielding insulating layer 50 and the light-emitting unit 20 is relatively close, the light-emitting angle of the touch display panel is ultimately larger.

[0051] Furthermore, based on the above embodiments, in this embodiment, since the bridge metal layer 80 needs to connect the disconnected Tx electrode 42 or Rx electrode 41, the bridge metal layer 80 needs to have a portion connected to the Tx electrode 42 or Rx electrode 41 and a portion that can cover the disconnection point. Therefore, in this embodiment, the bridge metal layer 80 includes two connecting portions 81 and a bridge portion 82 located between the two connecting portions 81. Specifically, the two connecting portions 81 are located on both sides of the disconnection point 43 of the touch electrode 40, and the bridge portion 82 can extend along the disconnected Tx electrode 42 or Rx electrode 41. When connected, the two connecting portions 81 of the bridge metal layer 80 are connected to the Tx electrode 42 or Rx electrode 41 on both sides of the disconnection point 43, and the bridge portion 82 extends above the disconnection point 43 along the routing direction of the disconnected Tx electrode 42 or Rx electrode 41.

[0052] Furthermore, based on the above embodiments, in this embodiment, as follows: Figure 2 and Figure 4As shown, the width D3 of the orthographic projection area of ​​the bridging portion 82 on the first light-shielding insulating layer 50 is smaller than the width D2 of the orthographic projection area of ​​the connecting portion 81 on the first light-shielding insulating layer 50. That is, the bridging metal layer 80 is narrower in the middle and wider at both ends. This further reduces the area of ​​the bridging metal layer 80. When ambient light is incident, the area of ​​the bridging metal layer 80 reflecting the incident light is reduced, thereby further reducing the reflectivity of the incident light on the bridging metal layer 80. In this embodiment, it should be noted that the width D2 of the bridging metal layer 80 is smaller than the width D1 of the first light-shielding insulating layer 50. Specifically, the maximum width D2 of the bridging metal layer 80 (i.e., the width D2 of the connecting portion 81) is smaller than the width D1 of the first light-shielding insulating layer 50.

[0053] Furthermore, based on the above embodiments, in this embodiment, when the Tx electrode 42 or Rx electrode 41 has a break point at a non-crossing position, the connection portion 81 in the bridge metal layer 80 is positioned near the overlap of the Tx electrode 42 and the Rx electrode 41. That is, the position where the bridge metal layer 80 connects to the Tx electrode 42 or Rx electrode 41 is close to the overlap of the two electrodes. Specifically, as shown below... Figure 2 As shown, when there is a break point 43 on the Tx electrode 42, one of the connecting portions 81 of the bridge metal layer 80 is located at point d1 where the Tx electrode 42 and the Rx electrode 41 overlap, and the other connecting portion 81 is located at point d4 where the Tx electrode 42 and the Rx electrode 41 overlap, or it can be located at point d2 or point d3 where the Tx electrode 42 and the Rx electrode 41 overlap. This makes the connecting portion 81 located at the position with the largest interval between adjacent light-emitting units 20, so that the connecting portion 81 with a larger width in the bridge metal layer 80 has less impact on the light-emitting angle of the light-emitting unit 20.

[0054] Furthermore, based on the above embodiments, in this embodiment, as follows: Figure 4 As shown, in order to connect the bridge metal layer 80 to the disconnected electrode, in this embodiment, specifically, the first light-shielding insulating layer 50 has a via, and the connecting part 81 is electrically connected to the Tx electrode 42 or the Rx electrode 41 through the via. That is, in this embodiment, the via is used to electrically connect the connecting part 81 to the Tx electrode 42 or the Rx electrode 41 so that the disconnection point in the Tx electrode 42 or the Rx electrode 41 is connected.

[0055] Furthermore, based on the above embodiments, in this embodiment, since the bridge metal layer 80 still reflects incident light, in order to further reduce the reflection of incident light by the bridge metal layer 80, specifically, the side of the bridge metal layer 80 facing away from the first light-shielding insulating layer 50 has a concave-convex structure (not shown), and the concave-convex structure includes at least an arc-shaped protrusion. In this way, the incident light will undergo diffuse reflection when it shines on the concave-convex structure of the bridge metal layer 80, which changes the light path of the incident light, thereby reducing the amount of reflected light emitted and ultimately achieving the purpose of reducing reflectivity. In this embodiment, the concave-convex structure can be formed by connecting multiple arc-shaped protrusions to form an uneven structure, or the concave-convex structure can be formed by connecting arc-shaped protrusions and arc-shaped concave surfaces to form a wavy structure. In this embodiment, the surface of the bridge metal layer 80 can also be subjected to other low-reflection treatments to further reduce the reflectivity of incident light. For example, a low-reflection film layer can be provided on the side surface of the bridge metal layer 80 to achieve the purpose of reducing reflectivity.

[0056] Furthermore, based on the above embodiments, in this embodiment, to avoid reflection of the bridge metal layer 80, a second light-shielding insulating layer 90 is specifically provided on the bridge metal layer 80. In this way, the second light-shielding insulating layer 90 blocks the incident light that shines on the bridge metal layer 80, thereby avoiding reflection of the incident light by the bridge metal layer 80. Therefore, in this embodiment, by providing a second light-shielding insulating layer 90 on the bridge metal layer 80, the reflection of incident light by the metal layer in the touch panel is completely avoided, and the reflectivity is greatly reduced compared with the prior art.

[0057] Furthermore, based on the above embodiments, in this embodiment, the width of the orthographic projection area of ​​the second light-shielding insulating layer 90 on the bridging metal layer 80 is greater than or equal to the width of the bridging metal layer 80. This ensures that when the second light-shielding insulating layer 90 is disposed on the bridging metal layer 80, it can completely cover the top surface of the bridging metal layer 80, preventing incident light from being reflected from the top surface of the bridging metal layer 80, thereby reducing the amount of reflected light emitted. Specifically, as shown... Figure 6 As shown, since the bridge metal layer 80 includes a connecting portion 81 and a bridge portion 82, in this embodiment, the width D4 of the orthographic projection area of ​​the second light-shielding insulating layer 90a on the connecting portion 81 is greater than the width D2 of the connecting portion 81 of the bridge metal layer 80, and the width D5 of the orthographic projection area of ​​the second light-shielding insulating layer 90b on the bridge portion 82 is greater than or equal to the width D3 of the bridge portion 82 of the bridge metal layer 80.

[0058] In this embodiment, when the width of the orthographic projection area of ​​the second light-shielding insulating layer 90 on the bridge metal layer 80 is greater than or equal to the width of the bridge metal layer 80, since the width of the connecting portion 81 is greater than the width of the bridge portion 82, the width D4 of the second light-shielding insulating layer 90a on the connecting portion 81 is greater than the width D5 of the second light-shielding insulating layer 90b on the bridge portion 82. That is, the second light-shielding insulating layer 90 is divided into the second light-shielding insulating layer 90a located on the connecting portion 81 and the second light-shielding insulating layer 90b located on the bridge portion 82.

[0059] Furthermore, based on the above embodiments, in this embodiment, the touch display panel further includes: a protective layer 60, which covers the light filter layer 70. When the second light-shielding insulating layer 90 is provided, the protective layer covers the second light-shielding insulating layer 90 and the light filter layer 70. Specifically, the protective layer 60 can be a film layer made of insulating material, such as an insulating film layer made of organic resin (Organic Coating, abbreviated as OC).

[0060] Example 2

[0061] This embodiment provides a touch display panel, which differs from the previous embodiment in that: In this embodiment, the touch electrode 40 includes a double-layered, cross-insulated touch driving electrode (i.e., Tx electrode 42) and a touch sensing electrode (i.e., Rx electrode 41). That is, in this embodiment, the touch electrode 40 includes Tx electrode 42 and Rx electrode 41, and the intersection of Tx electrode 42 and Rx electrode 41 is insulated. In this embodiment, the first light-shielding insulating layer 50 is disposed on the side of Tx electrode 42 and Rx electrode 41 away from the encapsulation layer 30. That is, in this embodiment, the first light-shielding insulating layer 50 covers the side of the touch electrode 40 away from the encapsulation layer 30. In this way, after incident light enters, under the blocking effect of the first light-shielding insulating layer 50, all touch electrodes 40 cannot reflect the incident light, thereby avoiding the reflection of incident light by the touch electrodes. Compared with the prior art, this embodiment greatly reduces the reflectivity of incident light.

[0062] In this embodiment, it should be noted that the first light-shielding insulating layer 50 may also be disposed on the side of the Tx electrode 42 or Rx electrode 41 that is away from the encapsulation layer 30, that is, the first light-shielding insulating layer 50 covers the side of one of the Tx electrode 42 or Rx electrode 41 that is away from the encapsulation layer 30.

[0063] Example 3

[0064] Embodiment 3 of the present invention provides a display device, which can be an OLED display device or any product or component with display function, including OLED display devices such as televisions, digital cameras, mobile phones, tablet computers, smartwatches, e-readers, and navigators.

[0065] In this embodiment, the display device includes a touch display panel from any of the above embodiments. The structure, function, and implementation of the touch display panel in this embodiment can be referred to the specific descriptions in the above embodiments, and will not be repeated here.

[0066] The display device provided in this embodiment includes the aforementioned touch display panel. When incident light enters the top layer of the touch display panel, the first light-shielding insulating layer 50 blocks the incident light, preventing the touch electrodes 40, which are covered by the first light-shielding insulating layer 50, from reflecting the incident light. Compared with the prior art, in this invention, the first light-shielding insulating layer 50 covers at least part of the touch electrodes 40, reducing the area of ​​the touch metal layer in the touch display panel that reflects the incident light, thereby greatly reducing the reflectivity of the incident light. At the same time, since the distance between the first light-shielding insulating layer 50 and the light-emitting unit 20 is reduced, the light-emitting viewing angle of the touch display panel is increased. Therefore, the display device provided in this embodiment reduces the reflectivity of ambient light, increases the light-emitting viewing angle, and solves the problems of high reflectivity and small light-emitting viewing angle in existing touch display devices.

[0067] In the description of the embodiments of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In the description of the present invention, "a plurality of" means two or more, unless otherwise precisely specified.

[0068] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A touch display panel, characterized in that, It includes a light-emitting unit disposed on an array substrate and an encapsulation layer located on the light-emitting unit, and further includes: a touch electrode and a first light-shielding insulating layer; Both the touch electrode and the first light-shielding insulating layer are disposed on the encapsulation layer, wherein the first light-shielding insulating layer is disposed on at least a portion of the touch electrode on the side opposite to the encapsulation layer, and at least a portion of the side of the touch electrode is wrapped by the first light-shielding insulating layer. The touch electrode includes a bridge metal layer and touch driving electrodes and touch sensing electrodes arranged in a cross manner. The bridge metal layer is disposed on the side of the first light-shielding insulating layer away from the encapsulation layer. The first light-shielding insulating layer is disposed on the side of the touch driving electrode and the touch sensing electrode away from the encapsulation layer. The bridge metal layer includes two connecting portions and a bridge portion located between the two connecting portions, and a second light-shielding insulating layer is provided on the bridge metal layer; The width of the orthogonal projection area of ​​the bridge metal layer on the first light-shielding insulating layer is smaller than the width of the first light-shielding insulating layer. The width of the bridge section is smaller than the width of the connecting section; The width of the second light-shielding insulating layer on the bridge portion is smaller than the width of the second light-shielding insulating layer on the connecting portion; The first light-shielding insulating layer has a via, which is used to electrically connect the connection portion to the touch driving electrode or the touch sensing electrode, so as to connect the disconnection point in the touch driving electrode or the touch sensing electrode.

2. The touch display panel according to claim 1, characterized in that, The side of the bridge metal layer facing away from the first light-shielding insulating layer has a concave-convex structure, and the concave-convex structure includes at least an arc-shaped protrusion.

3. The touch display panel according to claim 1, characterized in that, The width of the orthographic projection area of ​​the second light-shielding insulating layer on the bridge metal layer is greater than or equal to the width of the bridge metal layer.

4. A display device, characterized in that, Includes the touch display panel described in any one of claims 1-3 above.

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