Touch display panel and display apparatus

Abstract

The present application discloses a touch display panel and a display apparatus. The touch display panel comprises: a touch area and a non-touch area; a substrate; touch electrode blocks, the touch electrode blocks comprising first touch electrode blocks located in a first touch area and second touch electrode blocks located in a second touch area; touch lines, the touch lines comprising first touch lines and second touch lines, each first touch line extending along a first direction and being electrically connected to a first touch electrode block, each second touch line being electrically connected to a second touch electrode block, the second touch lines comprising a first section and a second section which are electrically connected, the first sections extending along a second direction, the second sections extending along the first direction, and the second sections and multiple first touch electrode blocks or multiple second touch electrode blocks arranged along the first direction overlapping in a direction perpendicular to the plane in which the substrate is located; and a touch lead, which is located in a fan-out area. The wiring space of the touch lines and the width of the frame are increased.

Description

Touch display panel and display device

[0001] Cross Reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202410479515.8, filed on April 18, 2024, entitled “Touch display panel and display device”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of electronic products, and in particular to a touch display panel and a display device. BACKGROUND

[0004] With the progress of science and technology, digital display panels such as smart phones and tablet computers are widely used, and consumers' requirements for displays are also increasing, such as ultra-high resolution display, touch display, and full-screen display, which have become a hot topic and an important issue in the display field.

[0005] At present, the schemes for realizing touch function include self-capacitance touch and mutual-capacitance touch, and the existing self-capacitance touch scheme increases the width of the frame of the touch display panel, which cannot meet the current narrow frame design requirement.

[0006] Therefore, there is an urgent need for a new touch display panel and display device.

[0007] SUMMARY

[0008] The embodiments of the present application provide a touch display panel and a display device, which increase the wiring space of the touch line, reduce the width of the non-touch area such as the lower frame, and improve the display effect.

[0009] In a first aspect, an embodiment of the present application provides a touch display panel, comprising: a touch area and a non-touch area, the non-touch area is located at least one side of the touch area along a first direction; the touch area comprises a first touch area and a second touch area, the second touch area is located at least one side of the first touch area along a second direction, and the non-touch area comprises at least one fan-out area, the first direction and the second direction intersect; a substrate; a touch electrode block, the touch electrode block is arranged in an array along the first direction and the second direction, and the touch electrode block comprises a first touch electrode block located in the first touch area and a second touch electrode block located in the second touch area; a touch line, at least partially located in the touch area, the touch line comprises a first touch line and a second touch line, the first touch line extends along the first direction and is electrically connected with the first touch electrode block, and the second touch line is electrically connected with the second touch electrode block; the second touch line comprises a first segment and a second segment which are electrically connected, the first segment extends along the second direction, the second segment extends along the first direction, and along a direction perpendicular to a plane where the substrate is located, the second segment overlaps with a plurality of the first touch electrode blocks or a plurality of the second touch electrode blocks arranged along the first direction; a touch lead line, located in the fan-out area, the touch lead line comprises a first touch lead line and a second touch lead line, the first touch lead line is electrically connected with the first touch line, and the second touch lead line is electrically connected with the second segment.

[0010] In a second aspect, an embodiment of the present application provides a display device, comprising the touch display panel in any of the above embodiments.

[0011] Compared with the related art, the touch display panel provided by the embodiment of the present application comprises a substrate, a touch electrode block, a touch line and a touch lead line, the first touch line in the touch line is electrically connected with the first touch electrode block located in the first touch area, the second touch line is electrically connected with the second touch electrode block located in the second touch area, and the second touch line comprises a first segment and a second segment which are electrically connected, the first segment extends along the second direction, so that the second segment can overlap with a plurality of the first touch electrode blocks or a plurality of the second touch electrode blocks arranged along the first direction in a direction perpendicular to a plane where the substrate is located, that is, the second segment can use the space of the touch area for wiring, thereby reducing the width of the frame and improving the display effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] FIG. 1 is a structural schematic diagram of a touch display panel according to an embodiment of the present application;

[0013] FIG. 2 is a structural schematic diagram of a touch display panel according to another embodiment of the present application;

[0014] FIG. 3 is a structural schematic diagram of a touch display panel according to still another embodiment of the present application;

[0015] FIG. 4 is a structural schematic diagram of a touch display panel according to yet another embodiment of the present application;

[0016] FIG. 5 is a film layer structure diagram of a touch display panel according to an embodiment of the present application;

[0017] FIG. 6 is a film layer structure diagram of a touch display panel according to another embodiment of the present application;

[0018] FIG. 7 is a film layer structure diagram of a touch display panel according to yet another embodiment of the present application;

[0019] FIG. 8 is a schematic diagram of arrangement of first touch lines and second touch lines according to an embodiment of the present application;

[0020] FIG. 9 is a schematic diagram of arrangement of first touch lines and second touch lines according to another embodiment of the present application;

[0021] FIG. 10 is a diagram of relative positions of second touch electrode blocks and light emitting units according to an embodiment of the present application;

[0022] FIG. 11 is a structural schematic diagram of a touch display panel according to yet another embodiment of the present application;

[0023] FIG. 12 is a schematic diagram of arrangement of second touch lines according to an embodiment of the present application;

[0024] FIG. 13 is a structural schematic diagram of a display device according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described below in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative effort should fall within the scope of the present application.

[0026] It is obvious that various modifications and changes can be made to the present application without departing from the spirit and scope of the present application. Therefore, the present application intends to cover the modifications and changes of the present application falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided by the present application can be combined with each other without contradiction.

[0027] In the prior art, the fan-out mode of the touch control line connected with the touch control electrode in the self-capacitance touch control affects the size of the lower frame of the touch display panel. The existing arrangement mode of the touch control line causes the lower frame of the touch display panel to have a large width, which cannot meet the requirements.

[0028] To solve the above problems, the touch display panel provided by the embodiment of the present application extends the first segment along the second direction, so that the extension of the first segment enables the second segment to overlap the plurality of first touch control electrode blocks or the plurality of second touch control electrode blocks arranged along the first direction in the direction perpendicular to the plane where the substrate is located, increases the wiring space of the touch control line, reduces the width of the non-touch area such as the lower frame, and improves the display effect.

[0029] In order to better understand the present application, the touch display panel and display device according to the embodiment of the present application are described in detail below in combination with FIGS. 1 to 13.

[0030] Please refer to FIGS. 1 to 2 together, FIG. 1 is a structural schematic diagram of a touch display panel according to an embodiment of the present application; and FIG. 2 is a structural schematic diagram of a touch display panel according to another embodiment of the present application.

[0031] The embodiment of the present application provides a touch display panel, which comprises a touch area A and a non-touch area B, the non-touch area B is located at least one side of the touch area A along a first direction Y; the touch area A comprises a first touch area A1 and a second touch area A2, the second touch area A2 is located at least one side of the first touch area A1 along a second direction X, the non-touch area B comprises at least one fan-out area B1, the first direction Y and the second direction X intersect;

[0032] The touch display panel further comprises a substrate 1, a touch control electrode block 2, a touch control line 3 and a touch control lead 4, the touch control electrode block 2 is arranged in an array along the first direction Y and the second direction X, the touch control electrode block 2 comprises a first touch control electrode block 21 located in the first touch area A1 and a second touch control electrode block 22 located in the second touch area A2;

[0033] The touch control line 3 is at least partially located in the touch area A, the touch control line 3 comprises a first touch control line 31 and a second touch control line 32, the first touch control line 31 extends along the first direction Y and is electrically connected with the first touch control electrode block 21, the second touch control line 32 is electrically connected with the second touch control electrode block 22; the second touch control line 32 comprises a first segment 321 and a second segment 322 electrically connected, the first segment 321 extends along the second direction X, the second segment 322 extends along the first direction Y, along the direction perpendicular to the plane where the substrate 1 is located, the second segment 322 overlaps the plurality of first touch control electrode blocks 21 or the plurality of second touch control electrode blocks 22 arranged along the first direction Y;

[0034] The touch lead 4 is located in the fan-out area B1, and the touch lead 4 includes a first touch lead 41 and a second touch lead 42, the first touch lead 41 is electrically connected with the first touch line 31, and the second touch lead 42 is electrically connected with the second segment 322.

[0035] The touch display panel provided by the embodiment of the application includes a substrate 1, a touch electrode block 2, a touch line 3 and a touch lead 4, the first touch line 31 in the touch line 3 is electrically connected with the first touch electrode block 21 located in the first touch area A1, the second touch line 32 is electrically connected with the second touch electrode block 22 located in the second touch area A2, and the second touch line 32 includes a first segment 321 and a second segment 322 which are electrically connected. The first segment 321 extends along the second direction X, so that the second segment 322 can overlap the plurality of first touch electrode blocks 21 or the plurality of second touch electrode blocks 22 arranged along the first direction Y in the direction perpendicular to the plane where the substrate 1 is located, that is, the second segment 322 can use the space of the touch area A for wiring, thereby increasing the wiring space of the touch line 3, reducing the width of the non-touch area B, such as the width a of the lower frame, and improving the display effect.

[0036] In the embodiment, the first segment 321 can extend in the direction from the second touch area A2 to the first touch area A1, so that the second segment 322 can be closer to the center line of the touch display panel extending along the first direction Y and away from the two side edges of the touch display panel along the second direction X, and then the connection position of the second segment 322 and the second touch lead 42 is closer to the center line of the touch display panel extending along the first direction Y, thereby reducing the length of the second touch lead 42 required, reducing the width of the frame, and improving the display effect.

[0037] It can be understood that the touch area A is used to set the touch electrode block 2, the touch line 3 and other components to realize the area of the touch display panel, and the non-touch area B can be used to set the touch lead 4 or other signal wiring for display and the control chip 5 and other components to realize the signal control for the touch display panel.

[0038] Along the second direction X, the second touch area A2 is located on at least one side of the first touch area A1, that is, the second touch area A2 can be arranged on one side of the first touch area A1 along the second direction X, or the second touch area A2 can be arranged on both sides of the first touch area A1 along the second direction X, so as to facilitate the wiring of the second touch lead 42 on both sides of the first touch area A1.

[0039] The second section 322 and the first touch electrode blocks 21 or the second touch electrode blocks 22 arranged along the first direction Y overlap in the direction perpendicular to the plane where the substrate 1 is located, which means that the projection of the second section 322 on the substrate 1 in the direction perpendicular to the plane where the substrate 1 is located can overlap with the projection of the first touch electrode blocks 21 in the same column on the substrate 1, as shown in FIG. 1. Alternatively, the projection of the second section 322 on the substrate 1 in the direction perpendicular to the plane where the substrate 1 is located can overlap with the projection of the second touch electrode blocks 22 in the same column on the substrate 1, as shown in FIG. 2. The specific arrangement needs to be set according to the extension distance of the first section 321 along the second direction X.

[0040] The first touch electrode blocks 21 can be understood as at least three first touch electrode blocks 21.

[0041] For example, the first section 321 can directly extend to the first touch area A1, so that the second section 322 connected with the first section 321 can overlap with the first touch electrode blocks 21 in the first touch area A1 in the direction perpendicular to the plane where the substrate 1 is located. Alternatively, the first section 321 can extend to another column of second touch electrode blocks 22 adjacent to the first touch electrode blocks 21, so that the second section 322 connected with the first section 321 can overlap with the second touch electrode blocks 22 in the second touch area A2 in the direction perpendicular to the plane where the substrate 1 is located.

[0042] Optionally, the substrate 1 can be a hard substrate, such as a glass substrate, or a flexible substrate made of polyimide, polystyrene, polyethylene terephthalate, parylene, polyethersulfone or polyethylene naphthalate. The substrate 1 is mainly used to support the devices arranged thereon.

[0043] Referring to FIGS. 1 to 3, FIG. 3 is a structural schematic view of a touch display panel according to another embodiment of the present application. In some optional embodiments, the touch display panel includes a plurality of first touch electrode columns P1 and at least one second touch electrode column P2, the first touch electrode column P1 includes a plurality of first touch electrode blocks 21 arranged along a first direction Y, and the second touch electrode column P2 includes a plurality of second touch electrode blocks 22 arranged along the first direction Y. Adjacent first touch electrode columns P1 and second touch electrode columns P2 overlap with the same first section 321 in the direction perpendicular to the plane where the substrate 1 is located, and the first section 321 is electrically connected with a second touch electrode block 22 in the second touch electrode column P2.

[0044] In the embodiment, one end of the first segment 321 is electrically connected with a second touch electrode in the second touch electrode column P2, and the other end is located in the first touch area A1, so that the first segment 321 overlaps the adjacent first touch electrode column P1 and the second touch electrode column P2 in the direction perpendicular to the plane where the substrate 1 is located. The adjacent first touch electrode column P1 and the second touch electrode column P2 can refer to one first touch electrode column P1 and one second touch electrode column P2, as shown in FIG. 1 or FIG. 2.

[0045] By adjusting the extension length of the first segment 321, the distance between the second segment 322 and the middle line of the touch display panel extending in the first direction Y can be adjusted, so that the second segment 322 is away from the two side edges of the touch display panel in the second direction X, and the connection between the second segment 322 and the second touch lead 42 does not affect the width of the frame of the touch display panel.

[0046] In the embodiment, the first segments 321 electrically connected with the second touch electrodes in the same second touch electrode column P2 can extend to the position of the same first touch electrode column P1, so as to improve the regularity of the wiring and facilitate the wiring.

[0047] Referring to FIG. 3, in some optional embodiments, the first touch electrode includes a first sub-touch electrode Z1, and the second touch electrode includes a second sub-touch electrode Z2; the first end L1 of the first segment 321 is electrically connected with the second sub-touch electrode Z2, and the second end L2 of the first segment 321 is electrically connected with the second segment 322; in the direction perpendicular to the plane where the substrate 1 is located, the second end L2 overlaps the first sub-touch electrode Z1.

[0048] In the embodiment, the first sub-touch electrode Z1 and the second sub-touch electrode Z2 can be arranged adjacent to each other in the second direction X to facilitate the wiring, or the first sub-touch electrode Z1 and the second sub-touch electrode Z2 can also not be arranged adjacent to each other in the second direction X, and at least one second touch electrode column P2 or the like can be arranged therebetween. The first end L1 of the first segment 321 is electrically connected with the second sub-touch electrode Z2, and the second end L2 of the first segment 321 is electrically connected with the second segment 322. Thus, the position of the second end L2, i.e., the position of the starting end of the second segment 322, is limited by the overlapping of the second end L2 and the first sub-touch electrode Z1 in the direction perpendicular to the plane where the substrate 1 is located, so that the second segment 322 overlaps the first sub-touch electrode Z1 in the direction perpendicular to the plane where the substrate 1 is located. The second segment 322 is moved inward to the first touch area A1 for wiring, which facilitates the fan-out, ensures the touch performance, reduces the width of the lower frame, and improves the display effect.

[0049] Optionally, the first sub-touch electrode Z1 and the second sub-touch electrode Z2 are located in the same row in the second direction X, so as to facilitate the regular wiring of the first segment 321 in the second direction X and reduce the difficulty of preparation.

[0050] Referring to FIG. 1, in some optional embodiments, along the second direction X, the fan-out area B1 includes at least two sub-fan-out areas B11 which are spaced apart, and each of the sub-fan-out areas B11 is provided with at least one first touch lead 41 and at least one second touch lead 42.

[0051] In view of the fact that the fan-out area B1 needs to be provided with display leads for transmitting display signals in addition to the touch leads 4 for transmitting touch signals, in order to avoid mutual interference, at least two sub-fan-out areas B11 which are spaced apart can be provided for wiring of the touch leads 4, and display leads can be arranged between adjacent sub-fan-out areas B11.

[0052] Each of the sub-fan-out areas B11 is provided with at least one first touch lead 41 and at least one second touch lead 42, that is, each of the sub-fan-out areas B11 can transmit touch signals to the first touch electrode block 21 and the second touch electrode block 22 respectively.

[0053] Optionally, along the second direction X, the fan-out area B1 includes two sub-fan-out areas B11 which are spaced apart, and the two sub-fan-out areas B11 are symmetrically arranged about a middle line of the touch display panel along the first direction Y, so as to facilitate electrical connection of the touch lines 3 located on both sides of the middle line of the touch display panel and the touch leads 4.

[0054] In view of the fact that the touch lines 3 are usually made of metal and the refractive index of metal is relatively high, the display light of the touch display panel can be affected by the wiring of the touch lines 3. In the present embodiment, in view of the fact that the wiring track of the second touch line 32 is adjusted, which leads to uneven distribution of the touch lines 3 at the first touch electrode block 21 and the second touch electrode block 22, affecting the uniformity of the light emitted by the touch display panel.

[0055] Referring to FIG. 4 and FIG. 5, FIG. 4 is a structural schematic diagram of a touch display panel according to another embodiment of the present application; and FIG. 5 is a film layer structure diagram of a touch display panel according to an embodiment of the present application; in order to improve the above-mentioned problems, in some optional embodiments, the touch display panel further includes: an auxiliary lead 6, along a direction perpendicular to a plane on which the substrate 1 is located, the auxiliary lead 6 and at least one of the first touch electrode block 21 and the second touch electrode block 22 at least partially overlap, and the auxiliary lead 6 is floating.

[0056] The auxiliary lead wire 6 can adjust the light emission effect by using its refraction and reflection to the light emission of the touch display panel, and improve the light emission unevenness caused by the uneven distribution of the second touch lines 32. The auxiliary lead wire 6 can be regarded as a "touch line 3" without inputting touch signal, and the auxiliary lead wire 6 is floating, which means that the auxiliary lead wire 6 is not connected to the shell or the ground to avoid the mutual interference between the auxiliary lead wire 6 and other signal lines.

[0057] For example, if there is a second touch electrode column P2 which does not overlap with any second segment 322 in the direction perpendicular to the plane where the substrate 1 is located, the auxiliary lead wire 6 can be arranged to overlap with the second touch electrode block 22 in the second touch electrode column P2, and the light emission effect of the corresponding position of the second touch electrode column P2 can be changed by the auxiliary lead wire 6, so as to reduce the difference between the light emission effect of the corresponding position of the second touch electrode column P2 and the light emission effect of the first touch electrode column P1 and other second touch electrode columns P2, and improve the uniformity of the light emission effect of each position of the touch display panel.

[0058] In order to make the auxiliary lead wire 6 have the same light reflection effect as the first touch line 31 and the second touch line 32, the material of the auxiliary lead wire 6 can be the same as that of the first touch line 31 and the second touch line 32. For example, the material of the auxiliary lead wire 6, the first touch line 31 and the second touch line 32 can be one or a combination of molybdenum, titanium, aluminum and copper.

[0059] Please refer to FIG. 6, which is a film layer structure diagram of a touch display panel according to another embodiment of the present application. In some optional embodiments, the touch display panel further comprises an auxiliary lead wire 6 which overlaps with the first touch electrode block 21 at least partially in the direction perpendicular to the plane where the substrate 1 is located, and the auxiliary lead wire 6 is electrically connected to the first touch electrode block 21.

[0060] In the embodiment, the light emission adjustment can be realized by arranging the auxiliary lead wire 6 at the corresponding position of the first touch electrode block 21. Meanwhile, the auxiliary lead wire 6 is electrically connected to the first touch electrode block 21, which means that the auxiliary lead wire 6 and the first touch electrode block 21 are arranged in parallel to reduce the impedance of the first touch electrode block 21 and improve the conductive performance of the first touch electrode block 21. Optionally, when the auxiliary lead wire 6 is arranged on the side of the first touch electrode block 21 facing the substrate 1 and an insulating layer J is arranged between the auxiliary lead wire 6 and the first touch electrode block 21, the auxiliary lead wire 6 and the first touch electrode block 21 can be connected through a via hole penetrating the insulating layer J.

[0061] Similarly, when the auxiliary lead line 6 and the second touch electrode block 22 at least partially overlap in the direction perpendicular to the plane where the substrate 1 is located, the auxiliary lead line 6 and the second touch electrode block 22 can also be electrically connected, so as to reduce the impedance of the second touch electrode block 22 and improve the conductive performance of the second touch electrode block 22.

[0062] Optionally, the auxiliary lead line 6 and the first touch line 31 extend in the same direction, that is, the auxiliary lead line 6 extends in the first direction Y.

[0063] In consideration of the fact that the first section 321 extends in the second direction X, in some optional embodiments, the auxiliary lead line 6 comprises a first opening K1, and the first opening K1 and the first section 321 overlap in the direction perpendicular to the plane where the substrate 1 is located.

[0064] In the embodiment, when the auxiliary lead line 6 and the first section 321 are located in the same layer, the first opening K1 and the first section 321 overlap in the direction perpendicular to the plane where the substrate 1 is located, which means that the first section 321 passes through the position of the first opening K1, so that the auxiliary lead line 6 avoids the first section 321 and avoids affecting the normal wiring of the first section 321. Since a plurality of second touch lines 32 are usually provided, that is, a plurality of first sections 321 are provided, a plurality of first openings K1 need to be provided at the corresponding positions of the auxiliary lead line 6.

[0065] Please refer to FIG. 7, which is a film layer structure diagram of a touch display panel according to another embodiment of the present application. In some optional embodiments, the touch display panel further comprises a first conductive layer M1, an insulating layer J and a second conductive layer M2 which are arranged in the direction away from the substrate 1; the second touch electrode block 22 and the second touch line 32 are arranged in the same layer as one of the first conductive layer M1 and the second conductive layer M2, and the second touch electrode block 22 and the second touch line 32 are connected through a via hole penetrating the insulating layer J.

[0066] In the embodiment, the second touch electrode block 22 and the second touch line 32 are arranged in the same layer as one of the first conductive layer M1 and the second conductive layer M2, which means that the second touch electrode block 22 can be prepared together with one of the first conductive layer M1 and the second conductive layer M2 through the same process, and the two can be prepared by using the same material, so as to reduce the cost. The second touch line 32 can be prepared together with the other one of the first conductive layer M1 and the second conductive layer M2 through the same process. For example, the second touch electrode block 22 can be arranged in the same layer as the first conductive layer M1, the second touch line 32 can be arranged in the same layer as the second conductive layer M2, and the second touch electrode block 22 and the second touch line 32 are connected through a via hole penetrating the insulating layer J, so as to realize the signal transmission between the second touch electrode block 22 and the second touch line 32.

[0067] Optionally, the first touch control line 31 and the auxiliary lead 6 can be located in the same layer as the second touch control line 32, so as to save space, reduce the number of film layers required by the touch display panel, or to avoid interference between the first touch control line 31 and the second touch control line 32. The first touch control line 31 and the second touch control line 32 can also be arranged in different layers, without special limitation.

[0068] Optionally, the first touch control electrode block 21 and the first touch control line 31 are arranged in the same layer as one of the first conductive layer M1 and the second conductive layer M2, and the first touch control electrode block 21 and the first touch control line 31 are connected through a via hole penetrating the insulating layer J.

[0069] Optionally, the first touch control electrode block 21 and the second touch control electrode block 22 are arranged in the same layer, for example, can be arranged in the second conductive layer M2, and the first touch control line 31 and the second touch control line 32 can be arranged in the first conductive layer M1, so as to facilitate preparation. As shown in FIG. 8, FIG. 8 is a schematic diagram of arrangement of the first touch control line and the second touch control line according to an embodiment of the present application.

[0070] Alternatively, the first touch control line 31 and the second touch control line 32 can also be arranged in different layers, so as to facilitate wiring. As shown in FIG. 9, FIG. 9 is a schematic diagram of arrangement of the first touch control line and the second touch control line according to another embodiment of the present application.

[0071] It should be noted that in FIG. 8 and FIG. 9 provided by the present application, the same filled line is located in the same film layer, and the different filled lines are located in different film layers. Optionally, the same filled line can be manufactured in the same process.

[0072] For example, in FIG. 8, the first touch control line 31 and the first touch control lead 41 located in different layers can be connected through a via hole, and the second touch control line 32 and the second touch control lead 42 located in different layers can be connected through a via hole.

[0073] Please refer to FIG. 10, which is a diagram of relative positions of the second touch control electrode block 22 and the light emitting unit 8 according to an embodiment of the present application. In some optional embodiments, the first touch control line 31 and the second touch control line 32 are in a grid structure; and / or, the touch control electrode block 2 is in a grid structure.

[0074] It can be understood that the grid structure has better light transmittance, which can make the light emitted from the touch display panel emit from the second opening of the grid structure, so as to improve the display effect of the touch display panel. Optionally, the grid structure can be made of metal, for example, copper, aluminum, molybdenum and other materials with good conductive performance.

[0075] Optionally, the touch electrode block 2 can also have a planar structure, i.e. an integral structure, which can increase the touch area. The touch electrode block 2 can be made of transparent conductive material such as ITO (Indium Tin Oxide).

[0076] Referring to FIG. 7, in some optional embodiments, the touch display panel further comprises an array layer 7 and a light-emitting layer disposed between the substrate 1 and the touch electrode block 2. The light-emitting layer comprises a plurality of light-emitting units 8. The array layer 7 comprises pixel circuits T, and the pixel circuits T and the light-emitting units 8 are electrically connected. In the direction perpendicular to the plane where the substrate 1 is located, the touch traces and the light-emitting units 8 do not overlap. In the direction perpendicular to the plane where the substrate 1 is located, the touch electrode block 2 and the light-emitting units 8 do not overlap.

[0077] In the present embodiment, the touch traces and the touch electrode block 2 can both have a grid structure, so as to avoid the light-emitting units 8. In the direction perpendicular to the plane where the substrate 1 is located, the touch traces and the light-emitting units 8 do not overlap, i.e. the light-emitting units 8 can be disposed at the second openings of the touch traces having a grid structure, so as to avoid the light emitted by the light-emitting units 8 being completely blocked by the touch traces, thereby effectively improving the light transmittance of the touch display panel. Similarly, in the direction perpendicular to the plane where the substrate 1 is located, the touch electrode block 2 and the light-emitting units 8 do not overlap, i.e. the light-emitting units 8 can be disposed at the second openings of the touch electrode block 2 having a grid structure, so as to avoid the light emitted by the light-emitting units 8 being blocked by the touch electrode block 2.

[0078] It should be noted that the size of the touch electrode block 2 is usually much larger than the size of the light-emitting unit 8. One touch electrode block 2 can correspond to dozens, hundreds or more light-emitting units 8. Therefore, when the touch electrode block 2 has a grid structure, the second openings of the grid structure can correspond to one or more light-emitting units 8.

[0079] Optionally, the pixel circuit T comprises a transistor and a storage capacitor. The transistor comprises an active layer Y, a gate electrode G, a source electrode S and a drain electrode D. The storage capacitor comprises a first plate and a second plate.

[0080] Optionally, the light-emitting unit 8 comprises a first electrode layer, a light-emitting layer and a second electrode layer which are stacked.

[0081] Optionally, the light-emitting layer comprises one or more of an electron injection layer, an electron transport layer, a light-emitting material layer, a hole blocking layer, an electron blocking layer, a hole transport layer and a hole injection layer. The specific type of the light-emitting layer can be selected according to the specific type of the light-emitting layer, and there is no special limitation. The electron injection layer, the electron transport layer and the hole blocking layer can be disposed between the second electrode layer and the light-emitting material layer. The electron blocking layer, the hole transport layer and the hole injection layer can be disposed between the first electrode layer and the light-emitting material layer.

[0082] The material of the first electrode layer is generally a material with high work function, so as to improve the hole injection efficiency, and can be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), zinc tin oxide (IZO), or a transparent conductive polymer (such as polyaniline), etc. For example, the first electrode layer can be made of an ITO-Ag-ITO composite material, and is not particularly limited.

[0083] The material of the second electrode layer can be one of metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca), or indium (In), and can also be an alloy of the foregoing metal materials, such as a magnesium-silver alloy (Mg / Ag) or a lithium-aluminum alloy (Li / Al), and the present embodiment is not limited in this regard.

[0084] Referring to FIG. 11, which is a structural schematic diagram of a touch display panel according to another embodiment of the present application, in some optional embodiments, the touch display panel further includes a control chip 5 located in the non-touch area B, and the touch electrode block 2 and the pixel circuit T are controlled by the same control chip 5.

[0085] In the present embodiment, the control chip 5 can be an integrated chip with TDDI (Touch and Display Driver Integration), and there is no need to set two chips of a touch chip and a display chip, and the touch electrode block 2 and the pixel circuit T can be simultaneously controlled by one control chip 5 to realize the functions of touch and display, effectively reduce the space occupied by the chip, and improve the integration of the touch display panel.

[0086] Alternatively, the touch electrode block 2 and the pixel circuit T can also be controlled by different control chips 5 respectively, for example, the touch display panel further includes a first control chip 51 and a second control chip 52 located in the non-touch area B, and the second control chip 52 is arranged on the side of the first control chip 51 away from the touch area A along the first direction Y; the first control chip 51 is signal-connected with the pixel circuit T, and the second control chip 52 is signal-connected with the touch electrode block 2.

[0087] In the present embodiment, the first control chip 51 and the second control chip 52 respectively send signals to the pixel circuit T and the touch electrode block 2 to realize the separate control of display and touch, and avoid mutual interference. The second control chip 52 can be arranged on a circuit board or separately arranged.

[0088] Referring to FIG. 12, which is a structural schematic diagram of a second touch line 32 according to an embodiment of the present application, in some optional embodiments, the second touch line 32 includes at least three electrically connected fold line segments N, and the included angle between the extension directions of two adjacent fold line segments N is greater than or equal to 75° and less than or equal to 120°.

[0089] It can be understood that the angle between the extension directions of the two adjacent segments of the bent line segment N should not be too large, and if it is too large, the bent line segment N will tend to be a straight line, which is not conducive to wiring, and if the angle between the extension directions of the two adjacent segments of the bent line segment N is too small, it can cause excessive bending stress at the connection between the bent line segments N, and thus cause problems such as breakage. Optionally, the angle between the extension directions of the two adjacent segments of the bent line segment N can be equal to any one of 75°, 90°, 105°, 120°, so as to facilitate wiring while ensuring the reliability of the second touch control line 32.

[0090] Please refer to FIG. 13, which is a structural schematic diagram of a display device according to an embodiment of the present application. The embodiment of the present application further provides a display device comprising the touch display panel in any of the above embodiments.

[0091] The display device provided by the embodiment of the present application has the technical effects of the technical solutions of the touch display panel in any of the above embodiments, and the same or corresponding structures and explanations of terms are not described herein again.

[0092] The display device provided by the embodiment of the present application can be an organic light-emitting diode (OLED) display device, a quantum dot light emitting diode (QLED), or a micro flat panel display device (Micro-OLED or Micro-LED), etc.

[0093] The display device provided by the embodiment of the present application can be applied to a mobile phone, and can also be any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle-mounted display, medical equipment, industrial control equipment, touch interaction terminal, etc., and the embodiment of the present application does not make special limitations.

[0094] The above is only a specific embodiment of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, module and unit can refer to the process in the foregoing method embodiments, which will not be described herein again. It should be understood that the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

[0095] It is also important to note that the examples mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the steps mentioned above, that is, the steps can be performed in the order mentioned in the examples, or in an order different from the examples, or several steps can be performed simultaneously.

Claims

1. A touch display panel, comprising: a touch area and a non-touch area, the non-touch area being located at least one side of the touch area along a first direction, the touch area comprising a first touch area and a second touch area, the second touch area being located at least one side of the first touch area along a second direction, the non-touch area comprising at least one fan-out area, the first direction and the second direction intersecting; a substrate; a plurality of touch electrode blocks arranged in an array along the first direction and the second direction, the plurality of touch electrode blocks comprising a first touch electrode block located in the first touch area and a second touch electrode block located in the second touch area; a plurality of touch lines at least partially located in the touch area, the plurality of touch lines comprising a first touch line and a second touch line, the first touch line extending along the first direction and electrically connected with the first touch electrode block, the second touch line electrically connected with the second touch electrode block, the second touch line comprising a first segment electrically connected with a second segment, the first segment extending along the second direction, the second segment extending along the first direction, and along a direction perpendicular to a plane in which the substrate is located, the second segment overlapping a plurality of the first touch electrode blocks or a plurality of the second touch electrode blocks arranged along the first direction; a plurality of touch lead lines located in the fan-out area, the plurality of touch lead lines comprising a first touch lead line and a second touch lead line, the first touch lead line electrically connected with the first touch line, the second touch lead line electrically connected with the second segment. 2.The touch display panel of claim 1, wherein, The touch display panel comprises a plurality of first touch electrode columns and at least one second touch electrode column, the plurality of first touch electrode columns comprising a plurality of the first touch electrode blocks arranged at intervals along the first direction, the at least one second touch electrode column comprising a plurality of the second touch electrode blocks arranged at intervals along the first direction; along a direction perpendicular to the plane in which the substrate is located, adjacent ones of the first touch electrode columns and the second touch electrode columns each overlap the same first segment, and the first segment is electrically connected with one of the second touch electrode blocks in the second touch electrode column. The first touch electrode comprises a first sub-touch electrode, and the second touch electrode comprises a second sub-touch electrode; 3.The touch display panel of claim 1, wherein, a first end of the first segment is electrically connected with the second sub-touch electrode, and a second end of the first segment is electrically connected with the second segment; along a direction perpendicular to the plane in which the substrate is located, the second end overlaps the first sub-touch electrode; along the second direction, the first sub-touch electrode and the second sub-touch electrode are located in a same row. along the second direction, the fan-out area comprises at least two sub-fan-out areas arranged at intervals, and each of the at least two sub-fan-out areas is respectively provided with at least one of the first touch lead lines and at least one of the second touch lead lines. 4.The touch display panel of claim 1, wherein, 5.The touch display panel of claim 1, further comprising: a plurality of auxiliary lead lines at least partially overlapping at least one of the first touch electrode blocks and the second touch electrode blocks along a direction perpendicular to the plane in which the substrate is located, the plurality of auxiliary lead lines being floating. 6.The touch display panel of claim 1, further comprising: ​ An auxiliary lead wire, at least partially overlapping the first touch electrode block in a direction perpendicular to a plane where the substrate is located, the auxiliary lead wire and the first touch electrode block being electrically connected; And / or, at least partially overlapping the second touch electrode block in a direction perpendicular to a plane where the substrate is located, the auxiliary lead wire and the second touch electrode block being electrically connected. 7.The touch display panel of claim 5 or 6, wherein, The auxiliary lead wire comprises a first opening, the first opening and the first segment being at least partially overlapped in a direction perpendicular to a plane where the substrate is located. 8.The touch display panel of claim 5 or 6, wherein, The auxiliary lead wire and the first touch line and the second touch line are made of the same material.

9. The touch display panel of claim 1, further comprising: a first conductive layer, an insulating layer and a second conductive layer arranged in a direction away from the substrate; The second touch electrode block and the second touch line are arranged in the same layer as one of the first conductive layer and the second conductive layer, and the second touch electrode block and the second touch line are connected through a via hole penetrating the insulating layer. 10.The touch display panel of claim 1, wherein, The first touch line and the second touch line are in a grid structure; and / or, the touch electrode blocks are in a grid structure.

11. The touch display panel of claim 10, further comprising an array layer and a light emitting layer between the substrate and the touch electrode blocks, the light emitting layer comprising a plurality of light emitting units, the array layer comprising pixel circuits, the pixel circuits and the light emitting units being electrically connected; In a direction perpendicular to a plane where the substrate is located, the touch wiring and the light emitting units do not overlap; and / or, in a direction perpendicular to a plane where the substrate is located, the touch electrode blocks and the light emitting units do not overlap.

12. The touch display panel of claim 11, further comprising: a control chip located in the non-touch area, the touch electrode blocks and the pixel circuits being controlled by the same control chip.

13. The touch display panel of claim 11, further comprising: a first control chip and a second control chip located in the non-touch area, the second control chip being arranged on a side of the first control chip away from the touch area in the first direction; The first control chip and the pixel circuits are signal connected, and the second control chip and the touch electrode blocks are signal connected. 14.The touch display panel of claim 1, wherein, The second touch line comprises at least three electrically connected folded line segments, an included angle between extension directions of two adjacent folded line segments being greater than or equal to 75° and less than or equal to 120°.

15. A display device comprising the touch display panel of any one of claims 1 to 14.

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