CN115220599A

CN115220599A - Touch display panel and display terminal

Info

Publication number: CN115220599A
Application number: CN202210836628.XA
Authority: CN
Inventors: 黄灿; 刘汉辰; 孙垒涛; 张春鹏; 鲜于文旭; 金映秀
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-10-21

Abstract

The application discloses touch-control display panel and display terminal, touch-control display panel includes: the light emitting device comprises a substrate base plate, a light emitting unit layer and a metal layer. The light emitting unit layer includes a light emitting layer and a first conductive layer, the light emitting layer including a plurality of light emitting parts; the metal layer is arranged on the substrate base plate and is positioned between the two adjacent light-emitting parts, the metal layer comprises a plurality of metal sections, the two adjacent metal sections and the light-emitting parts are enclosed to form a first groove, and the two adjacent metal sections and the substrate base plate are enclosed to form a second groove; the first conductive layer includes: the first conductive wire is arranged on the light-emitting layer and positioned in the first groove, and two ends of the first conductive wire are respectively connected to two adjacent metal sections; the second conductive traces are arranged on the metal layer in an insulated mode and comprise first touch traces and second touch traces, the first touch traces extend into the second grooves from the upper surface of the first metal section and are connected to the second metal section, and the second touch traces are arranged on the second metal section in an insulated mode.

Description

Touch display panel and display terminal

Technical Field

The application relates to the technical field of display, in particular to a touch display panel and a display terminal.

Background

In the flat panel display technology, an Organic Light-Emitting Diode (OLED) display has many advantages of being Light and thin, emitting Light actively, having a fast response speed, a large viewing angle, a wide color gamut, high brightness, and low power consumption. Compared with an LCD (Liquid crystal display), the OLED has the advantages of power saving, thinness and wide viewing angle, which is incomparable with the LCD.

With the continuous development of science and technology, a touch screen is widely applied to various fields of daily life, such as mobile phones, media players, navigation systems, digital cameras, photo frames, PDAs, game devices, displays, electric appliance control, medical devices and the like, as a simple and convenient human-computer interaction mode. The touch technology opens up a new mode of interpersonal interactive operation of the mobile terminal, and the large size, ultrathin flexibility and low cost are the inevitable development trend of the touch screen industry. Currently, a Touch screen may include an add Mode Touch Panel (osd Panel) and an overlay surface Touch Panel (OnCell Touch Panel) according to a composition structure. The external touch screen is formed by externally hanging a touch structure outside the display panel, so that the structure of the touch screen is enlarged and is not attractive; the touch structure is added on the surface of the surface-covered touch screen after the OLED device is packaged, so that the touch performance is influenced, the manufacturing cost is increased, and the yield and the reliability of the touch screen are influenced.

Disclosure of Invention

The invention aims to provide a touch display panel and a display terminal, and aims to solve the technical problems of large structure, poor touch performance and high manufacturing cost of the conventional touch display panel.

To achieve the above object, the present invention provides a touch display panel, including: a substrate base plate; a light emitting unit layer disposed on the substrate, the light emitting unit layer including a light emitting layer and a first conductive layer disposed on the light emitting layer, the light emitting layer including a plurality of light emitting parts; the metal layer is arranged on the substrate base plate and is positioned between the two adjacent light-emitting parts, the metal layer comprises a plurality of metal sections, and the orthographic projection of each metal section on the substrate base plate is not overlapped with the orthographic projection of the light-emitting part on the substrate base plate; the two adjacent metal sections and the light-emitting part are enclosed into a first groove, and the two adjacent metal sections and the substrate are enclosed into a second groove; wherein the first conductive layer comprises: the first conductive routing is arranged on the light-emitting layer and is positioned in the first groove, and two ends of the first conductive routing are respectively connected to two adjacent metal sections; and the second conductive routing is arranged on the metal layer in an insulating manner and comprises a first touch routing and a second touch routing, the first touch routing extends into the second groove from the upper surface of the first metal section and is connected to the second metal section, and the second touch routing is arranged on the second metal section in an insulating manner.

Further, the touch display panel further includes: a shielding layer disposed between the second conductive trace and the metal layer, the shielding layer comprising: one end of the first shielding section extends into the first groove and forms a first undercut structure with one end of the first metal section, and the other end of the first shielding section is flush with the other end of the first metal section; one end of the second shielding section extends into the first groove, a second undercut structure is formed between the second shielding section and one end of the second metal section, the other end of the second shielding section extends into the second groove, and a third undercut structure is formed between the second shielding section and the other end of the second metal section.

Further, the first touch trace is disposed on the first shielding segment, one end of the first touch trace extends into the first groove, and the other end of the first touch trace extends into the second groove along the other end of the first metal segment and is connected to the second metal segment; the second touch routing is arranged on the second shielding section, one end of the second touch routing extends into the first groove, and the other end of the second touch routing extends into the second groove.

Further, an orthographic projection of one end of the first touch trace on the substrate coincides with an orthographic projection part of the first conductive trace on the substrate; the orthographic projection of one end of the second touch wire on the substrate base plate is partially overlapped with the orthographic projection of the first conductive wire on the substrate base plate, and the orthographic projection of the other end of the second touch wire on the substrate base plate is partially overlapped with the orthographic projection of the other end of the first touch wire on the substrate base plate.

Further, the first conductive trace extends from a sidewall of the first groove to a bottom surface thereof.

Further, the first conductive layer further includes: third conductive traces disposed between the first touch trace and the second touch trace, each third conductive trace having a plurality of fractures, the plurality of third conductive traces being intersected with each other to form a virtual grid; the first touch-control routing and the second touch-control routing are mutually crossed to form a touch-control network; the virtual net and the touch net are arranged at intervals to form a metal grid.

Furthermore, the first touch trace comprises a plurality of first electrode blocks which are arranged along a first direction and are connected with each other; the second touch routing comprises a plurality of second electrode blocks which are arranged along a second direction and are connected with each other; the third conductive routing comprises a plurality of mutually connected filling electrode blocks, and each filling electrode block is arranged between the first electrode block and the second electrode block.

Further, the first conductive layer is a cathode layer.

Furthermore, the substrate comprises a thin film transistor layer, an active layer, a gate layer and a source drain layer, wherein the thin film transistor layer comprises the active layer, the gate layer and the source drain layer which are insulated from each other; the light-emitting unit layer further comprises a second conducting layer, the light-emitting layer is arranged on the second conducting layer, the second conducting layer comprises a plurality of anodes, each light-emitting portion corresponds to one anode, and the anodes are connected to the source drain layer.

In order to achieve the above object, the present invention further provides a display terminal, which includes any one of the touch display panels described above.

The technical effect of the invention is to provide a touch display panel and a display terminal, wherein the cathode of the light emitting unit layer and the two touch wires of the touch structure are formed in the same process step, which is beneficial to realizing a high-integration and thin-thickness touch display panel.

Further, a metal layer is arranged on the substrate base plate and located between two adjacent light-emitting parts, the metal layer comprises a plurality of metal sections, the orthographic projection of each metal section on the substrate base plate is not overlapped with the orthographic projection of each light-emitting part on the substrate base plate, two adjacent metal sections and one light-emitting part are enclosed to form a first groove, and two adjacent metal sections and the substrate base plate are enclosed to form a second groove. The first conductive routing is arranged on the light emitting layer and located in the first groove, two ends of the first conductive routing are connected to the two adjacent metal sections respectively, VSS signal transmission of the light emitting unit layer is achieved, an existing cathode lap joint area can be omitted, and therefore the touch display panel with the ultra-narrow frame is facilitated to be achieved. The second conductive routing is arranged on the metal layer in an insulated mode, the second conductive routing comprises a first touch routing and a second touch routing, the first touch routing extends into the second groove from the upper surface of the first metal section and is connected to the second metal section, the second touch routing is arranged on the second metal section in an insulated mode, the touch routing of the touch structure can be connected with the metal layer (namely the metal layer) below the touch routing, and therefore VDD signal transmission of the touch electrode is achieved.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a display unit of a touch display panel according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of two display units of a touch display panel according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a first conductive trace according to an embodiment of the present application.

Fig. 4 is a schematic view of a touch structure according to an embodiment of the disclosure.

Fig. 5 is a schematic view of the partition of fig. 4.

Fig. 6 is a schematic structural diagram of a touch electrode according to an embodiment of the present disclosure.

10. A display unit; 1. A substrate base plate;

2. a light emitting cell layer; 3. A metal layer;

11. a substrate; 12. A thin film transistor layer;

13. a planarization layer; 14. A pixel defining layer;

15. a shielding layer; 121. An active layer;

122. a first gate insulating layer; 123. A first gate layer;

124. a second gate insulating layer; 125. A second gate layer;

126. a dielectric layer; 127. A source drain layer;

128. a signal block; 21. A second conductive layer;

22. a light emitting layer; 23. A first conductive layer;

24. a common layer; 31. A first metal segment;

32. a second metal segment; 151. A first shield segment;

152. a second shield segment; 231. A first conductive trace;

232. a second conductive trace; 233. A third conductive trace;

41. a first groove; 42. A second groove;

51. a first conductive post; 52. A second conductive pillar;

53. a third conductive pillar; 61. A through hole;

62. an opening; 71. A first undercut structure;

72. a second undercut structure; 73. A third undercut structure;

81. a first electrode block; 82. A second electrode block;

83. filling an electrode block; 2321. A first touch trace;

2322. and a second touch trace.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "inner", "outer", "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The Organic Light Emitting Diode (OLED) display panel has the characteristics of self luminescence, high contrast, low energy consumption, wide viewing angle, high response speed, wide use temperature range, simple manufacture and the like, can be used for flexible panels, and has wide development prospect. In order to meet the diversified requirements of users, the integration of various functions, such as a touch function and a fingerprint identification function, in the display panel is of great significance.

In this embodiment, an In cell touch structure (In cell touch) is formed In an OLED display panel, and the touch structure and a cathode or a Capping layer (CPL) are formed In the same process step, so as to implement a touch function of the display panel.

As shown in fig. 1-2, in the touch display panel of the present embodiment, each display unit 10 includes a substrate 1, a light emitting unit layer 2, and a metal layer 3.

Substrate 1 includes a base 11, a thin-film-transistor layer 12, a planarization layer 13, and a pixel defining layer 14.

The substrate 11 may be a single buffer layer, or may be a stacked structure of a flexible layer and a buffer layer.

The thin-film transistor layer 12 is disposed on the substrate 11 and includes a plurality of thin-film transistors disposed at intervals, and the thin-film transistors may be of a top-gate structure or a bottom-gate structure, which is not particularly limited herein. In this embodiment, the thin-film transistor layer 12 includes an active layer 121, a gate layer, and a source/drain layer 127, which are insulated from each other. Specifically, the thin-film transistor layer 12 includes an active layer 121, a first gate insulating layer 122, a first gate layer 123, a second gate insulating layer 124, a second gate layer 125, a dielectric layer 126, and a source/drain layer 127. The active layer 121 is disposed on the substrate 11; the first gate insulating layer 122 is disposed on the active layer 121 and extends to the upper surface of the substrate 11; the first gate layer 123 is disposed on the first gate insulating layer 122, and an orthographic projection of the first gate layer 123 on the substrate 11 completely falls within an orthographic projection of the active layer 121 on the substrate 11; the second gate insulating layer 124 is disposed on the first gate layer 123 and extends to the upper surface of the first gate insulating layer 122; the second gate layer 125 is disposed on the second gate insulating layer 124 and opposite to the first gate layer 123; the dielectric layer 126 is disposed on the second gate layer 125 and extends to the second gate insulating layer 124; the source/drain layer 127 is disposed on the dielectric layer 126 and connected to the active layer 121 through a first conductive pillar 51, wherein a material of the first conductive pillar 51 is the same as a material of the source/drain layer 127. Source drain layer 127 also includes signal blocks 128 disposed in layers, with at least two signal blocks 128 being spaced apart on dielectric layer 126.

The planarization layer 13 is disposed on the source/drain layer 127 and extends to the upper surface of the dielectric layer 126. The planarization layer 13 is formed with a through hole 61 for exposing one electrode, such as a drain, in the source/drain layer 127, which is not limited herein.

The light emitting unit layer 2 is disposed on the thin film crystal layer, and as shown in fig. 1, the light emitting unit layer 2 is disposed on the flat layer 13 and includes a second conductive layer 21, a light emitting layer 22, and a first conductive layer 23, which are sequentially stacked. The second conductive layer 21 includes a plurality of anodes, each of which is filled in the via hole 61 and connected to one electrode, such as a drain, of the source/drain layer 127. The light emitting layer 22 is disposed on the second conductive layer 21 and includes a plurality of light emitting portions, each of which forms a sub-pixel, and the sub-pixels may be a red sub-pixel, a green sub-pixel, and a blue sub-pixel. In order to better define the position of each sub-pixel, a pixel definition layer 14 is formed before preparing the light emitting layer 22, and the pixel definition layer 14 is disposed on the planarization layer 13 and has openings 62 for exposing the anodes. Light emitting materials are deposited in the openings 62 to form light emitting portions of different colors, thereby forming the light emitting layer 22. The first conductive layer 23 covers the entire light-emitting layer 22.

In one embodiment, a common layer 24 may be disposed between the light-emitting layer 22 and the first conductive layer 23, the common layer 24 may be an electron functional layer, and of course, another common layer 24 (not shown) may be disposed between the light-emitting layer 22 and the second conductive layer, and the common layer 24 may be a hole functional layer. The electron functional layer and the hole functional layer are arranged on the two sides of the light-emitting layer 22, so that electrons and holes can be combined with the composite layer excitons in the light-emitting layer 22 and emit light, the light-emitting efficiency of each light-emitting part in the light-emitting unit layer 2 is increased, the accuracy of light-emitting color is improved, the current required by the light-emitting unit layer 2 when the brightness requirement is met is smaller, and the aging speed of the light-emitting material is reduced.

The metal layer 3 is disposed above the substrate 1, and as shown in fig. 1, the metal layer 3 is disposed on the pixel defining layer 14 and between two adjacent light emitting portions. The metal layer 3 includes a plurality of metal segments, and an orthogonal projection of each metal segment on the substrate 1 does not overlap with an orthogonal projection of each light emitting portion on the substrate 1. Two adjacent metal segments and the light emitting portion are enclosed to form a first groove 41, and two adjacent metal segments and the layer substrate are enclosed to form a second groove 42. Specifically, the metal layer 3 includes a first metal segment 31 and a second metal segment 32, the first metal segment 31 is connected to the VSS signal block 128 through the second conductive pillar 52, the second metal segment 32 is connected to the VDD signal block 128 through the third conductive pillar 53, sidewalls of the adjacent first metal segment 31 and second metal segment 32 and an upper surface of a light emitting portion are enclosed to form a first groove 41, and the adjacent first metal segment 31 and second metal segment 32 and an upper surface of a part of the pixel defining layer 14 are enclosed to form a second groove 42.

In this embodiment, the first conductive layer 23 includes a first conductive trace 231, a second conductive trace 232, and a third conductive trace 233.

The first conductive trace 231 is disposed on the light-emitting layer 22 and located in the first groove 41. Specifically, the first conductive trace 231 is disposed on the upper surface of each light emitting part and extends from the sidewall of the first groove 41 to the bottom surface of the first groove 41 to serve as a cathode in the light emitting cell layer 2. Two ends of the first conductive trace 231 are respectively connected to two adjacent metal segments, that is, one end of the first conductive trace 231 is connected to the first metal segment 31, and the other end is connected to the second metal segment 32, so that the cathode and the metal layer 3 are mutually conducted for transmitting the VSS signal. The cross-sectional view of the first conductive trace 231 may be a straight line, a "U" -shape, a "W" -shape, a "U" -shape, etc., and is not limited herein.

The second conductive trace 232 is disposed on the metal layer 3 in an insulating manner, that is, the shielding layer 15 is disposed between the second conductive trace 232 and the metal layer 3. Referring to fig. 1, the common layer 24 covers the entire light-emitting layer 22, i.e., the common layer 24 is disposed on the light-emitting part and the shielding layer 15, and the first conductive layer 23 is disposed on the common layer 24. The second conductive trace 232 includes a first touch trace 2321 and a second touch trace 2322, the first touch trace 2321 extends from the upper surface of the first metal segment 31 to the second groove 42 and is connected to the second metal segment 32, the second touch trace 2322 is disposed on the second metal segment 32 in an insulated manner, and the touch trace of the touch structure can be connected to the metal layer (i.e., the metal layer 3) below, so as to implement VDD signal transmission of the touch electrode.

Specifically, the shield layer 15 includes a first shield segment 151 and a second shield segment 152. One end of the first shielding segment 151 extends into the first groove 41, and forms a first undercut structure 71 with one end of the first metal segment 31, and the other end of the first shielding segment 151 is flush with the other end of the first metal segment 31. One end of the second shielding segment 152 extends into the first groove 41 and forms a second undercut structure 72 with one end of the second metal segment 32, and the other end of the second shielding segment 152 extends into the second groove 42 and forms a third undercut structure 73 with the other end of the second metal segment 32.

The first touch trace 2321 is disposed on the first shielding segment 151, one end of the first touch trace 2321 extends into the first groove 41, and the other end extends into the second groove 42 along the other end of the first metal segment 31 and is connected to the second metal segment 32, so that the first touch trace 2321 and the second metal segment 32 are mutually conducted for transmitting a VDD signal of the touch electrode. The second touch trace 2322 is disposed on the second shielding segment 152, one end of the second touch trace 2322 extends into the first groove 41, and the other end extends into the second groove 42.

An orthographic projection of one end of the first touch trace 2321 on the substrate 1 coincides with an orthographic projection of the first conductive trace 231 on the substrate 1. An orthographic projection of one end of the second touch trace 2322 on the substrate base 1 coincides with an orthographic projection of the first conductive trace 231 on the substrate base 1, and an orthographic projection of the other end of the second touch trace 2322 on the substrate base 1 coincides with an orthographic projection of the other end of the first touch trace 2321 on the substrate base 1.

In this embodiment, two undercut structures, namely a first undercut structure 71 and a second undercut structure 72, are formed in the first groove 41, and the two undercut structures form a closed loop structure, so that the first conductive trace 231 (i.e. the cathode) located in the first groove 41 forms a closed loop pattern, as shown in fig. 3. An undercut structure, i.e., a third undercut structure 73, is formed in the second groove 42 to divide the second conductive trace 232 to form the first touch trace 2321 and the second touch trace 2322, so as to implement the touch function of the display panel.

Therefore, in the present embodiment, the cathode of the light emitting unit layer 2 and the two touch traces of the touch structure are formed in the same process step, which is beneficial to realizing a high-integration and thin-thickness touch display panel.

Further, the first undercut structure 71, the second undercut structure 72, and the third undercut structure 73 are disposed to be used for interrupting the first conductive layer 23 disposed on or above the upper surface of the shielding layer 15, so as to form the first conductive trace 231, the first touch trace 2321, and the second touch trace 2322. The first conductive traces 231 are connected with the metal layer 3, so that the conventional cathode overlapping area can be omitted while the VSS signal transmission of the light emitting unit layer 2 is realized, thereby facilitating the realization of the touch display panel with the ultra-narrow frame. The second conductive trace 232 is connected to the metal layer 3, so that VDD signal transmission of the touch electrode can be achieved.

As shown in fig. 4-6, the first touch trace 2321 includes a plurality of first electrode blocks 81 disposed along a first direction (transverse direction) and connected to each other, and the second touch trace 2322 includes a plurality of second electrode blocks 82 disposed along a second direction (longitudinal direction) and connected to each other, wherein the first electrode blocks 81 and the second electrode blocks 82 form a touch electrode, the touch electrode is connected to a driving device (not shown), and the first direction and the second direction are perpendicular to each other. The first touch trace 2321 may be a sensing electrode trace (RX), and the second touch trace 2322 may be a driving electrode Trace (TX).

The third conductive trace 233 is disposed between the first touch trace 2321 and the second touch trace 2322, the third conductive trace 233 includes a plurality of filler electrode blocks 83 connected to each other, and each filler electrode block 83 is disposed between the first electrode block 81 and the second electrode block 82. Each third conductive trace 233 has a plurality of fractures, that is, the fractures formed by the broken third conductive trace 233 are insulated to form a plurality of filled electrode blocks 83, and this arrangement can increase the arrangement area of the touch electrodes as much as possible, and increase the density of the touch electrodes, thereby increasing the touch sensitivity.

The third conductive traces 233 cross each other to form a dummy mesh. The first touch trace 2321 and the second touch trace 2322 intersect with each other to form a touch screen (touch mesh), the virtual grid and the touch screen are arranged at an interval to form a metal mesh, the metal mesh can prevent touch blind spots caused by continuous arrangement of the filling electrode blocks 83 (dummy electrode blocks), so that the touch precision of the region is improved, and the touch performance of the display panel is improved.

The embodiment also provides a display terminal, which comprises a terminal main body and a touch display panel, wherein the terminal main body is connected with the touch display panel. The display terminal provided by this embodiment may be: products or components with display functions such as mobile phones, tablet computers, notebook computers, digital cameras, navigators and the like.

The touch display panel and the display terminal provided by the embodiment of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A touch display panel, comprising:

a base substrate;

a light emitting unit layer disposed on the substrate, the light emitting unit layer including a light emitting layer and a first conductive layer disposed on the light emitting layer, the light emitting layer including a plurality of light emitting parts; and

the metal layer is arranged on the substrate base plate and is positioned between two adjacent light-emitting parts, the metal layer comprises a plurality of metal sections, and the orthographic projection of each metal section on the substrate base plate is not overlapped with the orthographic projection of the light-emitting part on the substrate base plate; the two adjacent metal sections and the light-emitting part are encircled to form a first groove, and the two adjacent metal sections and the substrate base plate are encircled to form a second groove;

wherein the first conductive layer comprises:

the first conductive routing is arranged on the light-emitting layer and is positioned in the first groove, and two ends of the first conductive routing are respectively connected to two adjacent metal sections; and

the second conductive trace is arranged on the metal layer in an insulated mode and comprises a first touch trace and a second touch trace, the first touch trace extends into the second groove from the upper surface of the first metal section and is connected to the second metal section, and the second touch trace is arranged on the second metal section in an insulated mode.

2. The touch display panel according to claim 1, further comprising:

a shielding layer disposed between the second conductive trace and the metal layer, the shielding layer comprising:

one end of the first shielding section extends into the first groove and forms a first undercut structure with one end of the first metal section, and the other end of the first shielding section is flush with the other end of the first metal section;

one end of the second shielding section extends into the first groove, a second undercut structure is formed between the second shielding section and one end of the second metal section, the other end of the second shielding section extends into the second groove, and a third undercut structure is formed between the second shielding section and the other end of the second metal section.

3. The touch display panel of claim 2,

the first touch routing is arranged on the first shielding section, one end of the first touch routing extends into the first groove, and the other end of the first touch routing extends into the second groove along the other end of the first metal section and is connected to the second metal section;

the second touch routing is arranged on the second shielding section, one end of the second touch routing extends into the first groove, and the other end of the second touch routing extends into the second groove.

4. The touch display panel of claim 3,

an orthographic projection of one end of the first touch wire on the substrate is overlapped with an orthographic projection of the first conductive wire on the substrate;

the orthographic projection of one end of the second touch wire on the substrate base plate is partially overlapped with the orthographic projection of the first conductive wire on the substrate base plate, and the orthographic projection of the other end of the second touch wire on the substrate base plate is partially overlapped with the orthographic projection of the other end of the first touch wire on the substrate base plate.

5. The touch display panel according to claim 1,

the first conductive trace extends from a sidewall of the first groove to a bottom surface thereof.

6. The touch display panel according to claim 1, wherein the first conductive layer further comprises:

third conductive traces disposed between the first touch trace and the second touch trace, each third conductive trace having a plurality of fractures, the plurality of third conductive traces being intersected with each other to form a virtual grid;

the first touch-control routing and the second touch-control routing are mutually crossed to form a touch-control network;

the virtual net and the touch net are arranged at intervals to form a metal grid.

7. The touch display panel of claim 6,

the first touch routing comprises a plurality of first electrode blocks which are arranged along a first direction and are connected with each other;

the second touch routing comprises a plurality of second electrode blocks which are arranged along a second direction and are connected with each other;

the third conductive routing comprises a plurality of mutually connected filling electrode blocks, and each filling electrode block is arranged between the first electrode block and the second electrode block.

8. The touch display panel of claim 1,

the first conductive layer is a cathode layer.

9. The touch display panel according to claim 1,

the substrate comprises a thin film transistor layer, an active layer, a grid layer and a source drain layer, wherein the active layer, the grid layer and the source drain layer are arranged in an insulated mode;

the light-emitting unit layer further comprises a second conducting layer, the light-emitting layer is arranged on the second conducting layer, the second conducting layer comprises a plurality of anodes, each light-emitting part corresponds to one anode, and the anodes are connected to the source drain layer.

10. A display terminal comprising the touch display panel according to any one of claims 1 to 9.