Touch display panel and touch display device

Abstract

A touch display panel has a display area and a fan-out area located at one side of the display area. The display area includes a first display area and a second display area located around the first display area. The touch display panel includes a display substrate and a touch function layer. The display substrate has a display side, and the touch function layer is located on the display side of the display substrate. The touch function layer includes a plurality of touch electrodes and a plurality of touch lead lines. The plurality of touch electrodes are located in the first display area. The plurality of touch lead lines are electrically connected with the plurality of touch electrodes, and the plurality of touch lead lines extend to the fan-out area through the second display area.

Description

TECHNICAL FIELD

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

[0002] In the related art, the frame width of the touch display panel is usually wide, which affects the visual effect of the touch display panel. SUMMARY

[0003] In one aspect, a touch display panel is provided. The touch display panel has a display area and a fan-out area located at one side of the display area. The display area includes a first display area and a second display area located around the first display area. The touch display panel includes a display substrate and a touch function layer. The display substrate has a display side, and the touch function layer is located on the display side of the display substrate. The touch function layer includes a plurality of touch electrodes and a plurality of touch lead lines. The plurality of touch electrodes are located in the first display area. The plurality of touch lead lines are electrically connected to the plurality of touch electrodes, and the plurality of touch lead lines extend to the fan-out area through the second display area.

[0004] In some embodiments, among the plurality of touch lead lines, the absolute value of the length difference of the positions of two touch lead lines in the display area ranges from 0 mm to 4 mm.

[0005] In some embodiments, among the plurality of touch lead lines, the lengths of the positions of at least two touch lead lines in the display area are substantially equal.

[0006] In some embodiments, the touch lead line includes a first lead-out line and a second lead-out line. One end of the first lead-out line is electrically connected to the touch electrode located in the first display area. The other end of the first lead-out line extends to the second display area. One end of the second lead-out line is electrically connected to the end of the first lead-out line away from the touch electrode, and the other end of the second lead-out line extends to the junction of the second display area and the fan-out area, and the second lead-out line extends along the extension direction of the edge of the first display area. Among any one of the plurality of touch lead lines, the sum of the lengths of the first lead-out line and the second lead-out line is a first set length value. Among the plurality of touch lead lines, the touch lead line with the longest first set length value is a second touch lead line, and the remaining touch lead lines are first touch lead lines. The first touch lead line further includes a first compensation line. The first compensation line is located in the second display area and is electrically connected to the first lead-out line and / or the second lead-out line in the first touch lead line.

[0007] In some embodiments, among the first touch lead lines, the sum of the lengths of the second lead-out line and the first compensation line is a second set length value. The absolute value of the difference of the second set length values of the two first touch lead lines ranges from 0 mm to 4 mm.

[0008] In some embodiments, the second set length values of the at least two first touch lead lines are substantially equal.

[0009] In some embodiments, the first touch lead lines include a first first touch lead line and a second first touch lead line. The first first touch lead line has a first set length value greater than a first set length value of the second first touch lead line. The first compensation lines include a first first compensation line and a second first compensation line. The first first compensation line has a length smaller than a length of the second first compensation line. The first first compensation line is electrically connected to the first first touch lead line, and the second first compensation line is electrically connected to the second first touch lead line.

[0010] In some embodiments, the first set length values of the plurality of touch lead lines gradually increase in a direction away from the display area.

[0011] In some embodiments, at least part of the orthographic projection of the first compensation line on the display substrate is located outside the range of the orthographic projection of the first lead-out line and / or the second lead-out line on the display substrate.

[0012] In some embodiments, the end of the second lead-out line electrically connected to the first lead-out line is a first connection end. In the first touch lead lines, one end of the first compensation line is electrically connected to the first connection end, and the other end extends in a direction away from the second lead-out line along the extension direction of the edge of the first display area.

[0013] In some embodiments, the orthographic projections of the plurality of first compensation lines on the display substrate away from the first connection end are substantially flush.

[0014] In some embodiments, the touch function layer includes a first conductive layer, a second conductive layer, and an insulating layer. The first conductive layer and the second conductive layer are stacked, and the insulating layer is located between the first conductive layer and the second conductive layer. The first lead-out line and the second lead-out line are located in the first conductive layer, and the first compensation line is located in the second conductive layer.

[0015] In some embodiments, the touch function layer includes a first conductive layer, a second conductive layer, and an insulating layer. The first conductive layer and the second conductive layer are stacked, and the insulating layer is located between the first conductive layer and the second conductive layer. The first lead-out line and the second lead-out line are located in the first conductive layer. The first compensation line includes at least two first sub-compensation lines spaced apart and at least one first connection part. The at least two first sub-compensation lines are located in the first conductive layer. The at least one first connection part is located in the second conductive layer. The first connection part crosses the first lead-out line and is electrically connected to the two adjacent first sub-compensation lines through the first via hole on the insulating layer.

[0016] In some embodiments, the plurality of touch electrodes includes a plurality of first touch electrodes and a plurality of second touch electrodes. The plurality of first touch electrodes are arranged in a first direction and each extends in a second direction intersecting the first direction. The plurality of first touch electrodes are located on the first conductive layer. The plurality of second touch electrodes are arranged in the second direction and each extends in the first direction. The plurality of second touch electrodes intersect the plurality of first touch electrodes and are insulated from each other to form a plurality of capacitive units at each intersection. A smallest enclosed figure formed by the plurality of capacitive units is the first display area. The second touch electrode includes a plurality of spaced touch sub-electrodes and a plurality of bridge portions. The plurality of spaced touch sub-electrodes are located on the first conductive layer. The plurality of bridge portions are located on the second conductive layer. The bridge portions cross the first touch electrodes and are electrically connected to two adjacent touch sub-electrodes through the second via on the insulating layer.

[0017] In some embodiments, the second touch lead further includes a second compensation line. The second compensation line is located in the second display area and is electrically connected to the first lead-out line and / or the second lead-out line in the second touch lead. In the second touch lead, the sum of the lengths of the second lead-out line and the second compensation line is substantially equal to the second set length value.

[0018] In some embodiments, the display substrate includes a substrate and a plurality of sub-pixels. The plurality of sub-pixels are located on one side of the substrate and in the display area. A normal projection of the at least one touch lead on the substrate avoids a normal projection of a light emitting area of the sub-pixel on the substrate.

[0019] In some embodiments, the arrangement direction of the display area and the fan-out area is a third direction. A direction parallel to the display substrate and intersecting the third direction is a fourth direction. At least part of the plurality of touch leads are distributed on both sides of the first display area along the fourth direction.

[0020] In another aspect, a touch display device is provided. The touch display device includes the touch display panel as described above. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings described in the following description are only some drawings of the embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings described in the following description can be regarded as schematic diagrams, and are not limited to the actual size of the product, the actual flow of the method, the actual timing of the signal, etc. involved in the embodiments of the present disclosure.

[0022] FIG. 1A Structure diagram of the touch display panel according to some embodiments;

[0023] FIG. 1B Structure diagram of a touch display panel according to some embodiments;

[0024] FIG. 1C Structure diagram of a touch function layer according to some embodiments;

[0025] FIG. 1D Structure diagram of an electrode plate according to some embodiments;

[0026] FIG. 1E Structure diagram of a capacitance unit according to some embodiments;

[0027] FIG. 2A Structure diagram of a touch display panel according to some embodiments;

[0028] FIG. 2B Structure diagram of a touch function layer according to some embodiments;

[0029] FIG. 2C Structure diagram of a touch display panel according to some embodiments;

[0030] FIG. 2D Position relationship diagram between a touch active area and a display area according to some embodiments;

[0031] FIG. 2E Structure diagram of a touch display panel according to some embodiments;

[0032] FIG. 2F Partial structure diagram of a touch function layer according to some embodiments;

[0033] FIG. 2G Structure diagram of a touch display panel according to some embodiments;

[0034] FIG. 2H Structure diagram of a touch display panel according to some embodiments;

[0035] FIG. 3A Structure diagram of a touch display panel according to some embodiments;

[0036] FIG. 3B Partial structure diagram of a touch function layer according to some embodiments;

[0037] FIG. 3C Partial structure diagram of a touch function layer according to some embodiments;

[0038] FIG. 3D Partial structure diagram of a touch function layer according to some embodiments;

[0039] FIG. 3EStructure diagram of a touch display panel according to yet some embodiments;

[0040] FIG. 4A Structure diagram of a touch display panel according to yet some embodiments;

[0041] FIG. 4B Structure diagram of a touch display panel according to yet some embodiments;

[0042] FIG. 4C Partial structure diagram of a touch function layer according to yet some embodiments;

[0043] FIG. 5A Projection position relationship diagram of a touch lead and a sub-pixel according to some embodiments;

[0044] FIG. 5B Projection position relationship diagram of a touch lead and a sub-pixel according to some embodiments;

[0045] FIG. 6 Structure diagram of a touch display device according to some embodiments. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those of ordinary skill in the art are within the scope of protection of the present disclosure.

[0047] Unless otherwise required by context, the term "comprise" and other forms of the term "comprise", such as "comprises" and "comprising", are to be construed as open, inclusive, meaning that "comprising" means "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to mean that the specific features, structures, materials or characteristics related to that embodiment or example are included in at least one embodiment or example of the present disclosure. The illustrative representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features, structures, materials or characteristics described can be included in any one or more embodiments or examples in any appropriate manner.

[0048] The terms "first", "second", etc. are used herein only to describe one ordinal number, and do not indicate or imply a relative importance or a specific order. Thus, a feature defined with "first", "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, the meaning of "a plurality" is two or more unless otherwise specified.

[0049] In describing some embodiments, the use of "coupled" or relative terms such as "connected", "engaged", and the like, may be used. For example, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other.

[0050] "A, B, and C at least one of" has the same meaning as "at least one of A, B, or C", both including the combinations that A alone, B alone, C alone, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0051] "A and / or B" includes the following three combinations: A alone, B alone, and a combination of A and B.

[0052] As used herein, "about", "approximately", or "around" includes the recited value and the average value within an acceptable range of deviation from the recited value, as determined by one of ordinary skill in the art taking into account the measurement being discussed and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0053] As used herein, "parallel", "perpendicular", "equal" includes the recited condition and a condition that is approximately the recited condition, the approximate condition being within an acceptable range of deviation, as determined by one of ordinary skill in the art taking into account the measurement being discussed and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and approximately parallel, where the acceptable range of deviation for approximately parallel may be, for example, within 5°; "perpendicular" includes absolute perpendicular and approximately perpendicular, where the acceptable range of deviation for approximately perpendicular may also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where the acceptable range of deviation for approximately equal may be, for example, a difference between the two that is less than or equal to 5% of either.

[0054] It should be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers can also be present.

[0055] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are schematic illustrations of idealized embodiments. Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Thus, embodiments should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region illustrated as a rectangle will, typically, have rounded or curved features. Thus, the regions illustrated in the figures are schematic and their shapes are not intended to illustrate the precise shape of a region that would be formed in a device and are not intended to limit the scope of the exemplary embodiments.

[0056] FIG. 1A Structure diagram of a touch display panel according to some embodiments.

[0057] As FIG. 1A shown, an embodiment of the present disclosure provides a touch display panel (English full name: Touch Screen Panel, English abbreviation: TSP) 200. It can be understood that the touch display panel 200 is used to display image information. Exemplarily, the touch display panel 200 can display static image information such as pictures or photos, etc., and can also display dynamic images such as videos or game screens, etc.

[0058] With the rapid development of display technology, the touch display panel 200 has broad application space in the fields of vehicle display, mobile phone display, tablet computer display, notebook computer display, and television display, etc. It can be understood that the touch display panel 200 has a touch function.

[0059] In some examples, the touch display panel 200 is any one of an organic light-emitting diode display (English full name: Organic Light-Emitting Diode, English abbreviation: OLED), a quantum dot light-emitting diode display (Quantum dot Light Emitting Diodes, English abbreviation: QLED), and a liquid crystal display (English full name: Liquid Crystal Display, English abbreviation: LCD).

[0060] In some examples, as FIG. 1A shown, the touch display panel 200 has a display area AA and a peripheral area CC, and the peripheral area CC is arranged around the display area AA. It can be understood that the display area AA is used to display image information, and the peripheral area CC is used to place lead lines or driving devices, etc. electrically connected with the display area AA.

[0061] In some examples, the touch display panel 200 can be square, circular, or other shapes. The shape of the display area AA can be the same as or different from the shape of the touch display panel 200.

[0062] In some examples, such as FIG. 1A As shown, the touch display panel 200 includes multiple subpixels 220. A subpixel 220 is the smallest unit for displaying an image on the touch display panel 200. The multiple subpixels 220 are located within the display area AA of the touch display panel 200, and are arranged in an array, enabling the display area AA to perform image display functions.

[0063] In some examples, such as FIG. 1A As shown, multiple sub-pixels 220 are arranged in multiple columns along a first direction X1 and in multiple rows along a second direction Y1, with the first direction X1 and the second direction Y1 intersecting. In some examples, the first direction X1 is horizontal and the second direction Y1 is vertical. For example, the first direction X1 and the second direction Y1 are perpendicular.

[0064] Understandably, each subpixel 220 can display a single color, such as red, green, or blue. The touch display panel 200 can include multiple red subpixels, multiple green subpixels, and multiple blue subpixels. By adjusting the brightness (grayscale) of the subpixels 220 of different colors, different intensities of red, green, and blue light can be obtained. Furthermore, by superimposing at least two of the different intensities of red, green, and blue light, even more colors of light can be displayed, thus achieving full-color display of the touch display panel 200.

[0065] FIG. 1B This is a structural diagram of a touch display panel according to some other embodiments.

[0066] like FIG. 1B As shown, the touch display panel 200 includes a display substrate 210 and a touch functional layer 100. The display substrate 210 has a display side, and the touch functional layer 100 is located on the display side of the display substrate 210.

[0067] Understandably, the display side of the display substrate 210 is used to display image information. The display substrate 210 includes a plurality of sub-pixels 220, enabling the display substrate 210 to perform display functions. The touch function layer 100 can detect the touch position. In this way, by placing the touch function layer 100 on the display side of the display substrate 210, the touch display panel 200 can perform touch functions.

[0068] In some examples, the touch function layer 100 is located in the display area AA of the touch display panel 200, so that the display area AA can realize touch function. For example, the touch function layer 100 is transparent, so as to avoid blocking the image information displayed in the display area AA.

[0069] The following continues to refer to FIG. 1B For example, the display substrate 210 is an OLED display substrate, and the structure of the display substrate 210 is described.

[0070] In some examples, as shown in FIG. 1B Each sub-pixel 220 includes a light emitting device EL and a pixel driving circuit, and the pixel driving circuit is electrically connected with the light emitting device EL and used to drive the light emitting device EL to emit light. For example, the pixel driving circuit includes a plurality of thin film transistors (TFT) T and at least one capacitor.

[0071] For example, as shown in FIG. 1B The display substrate 210 includes a substrate 211 and a multilayer conductive film layer 216, and the pixel driving circuit is located in the multilayer conductive film layer 216.

[0072] In some examples, the substrate 211 is a flexible material, so that the display substrate 210 can be bent, thereby enabling the touch display panel 200 to realize functions such as curved display, folding display or sliding display. In other examples, the substrate 211 is a rigid material.

[0073] For example, the material of the substrate 211 can be any one of polyimide (PI), polycarbonate (PC) or polyvinyl chloride (PVC).

[0074] For example, as shown in FIG. 1B The multilayer conductive film layer 216 is located on the same side of the substrate 211, and the multilayer conductive film layer 216 is stacked. In some examples, as shown in FIG. 1B The multilayer conductive film layer 216 includes, in sequence, an active film layer 212, a first gate metal layer Gate1, a second gate metal layer Gate2, a first source-drain metal layer SD1 and a second source-drain metal layer SD2, which are away from the substrate 211.

[0075] Exemplarily, the active film layer 212 and the first gate metal layer Gate1 can be used to form part (one, two or more) of the plurality of thin film transistors T, and the active film layer 212 and the second gate metal layer Gate2 can be used to form another part (one, two or more) of the plurality of thin film transistors T. The first gate metal layer Gate1 and the second gate metal layer Gate2 can be used to form at least one capacitor.

[0076] In some examples, an insulating film layer (not shown in the figure, for example, a gate insulating layer, a passivation layer, an organic layer, etc.) is arranged between the plurality of conductive film layers 216, and functions to electrically isolate two adjacent conductive film layers 216.

[0077] It should be noted that the embodiments of the present disclosure do not further limit the number of the active film layers 212. For example, in some examples of the present disclosure, the display substrate 210 can include only one active film layer 212, and the material of the active film layer 212 can include metal oxide or low-temperature polysilicon. In another example of the present disclosure, the display substrate 210 can include two active film layers 212, and the material of one of the active film layers 212 includes metal oxide and the material of the other active film layer 212 includes low-temperature polysilicon.

[0078] In some examples, the plurality of conductive film layers 216 can further include a third gate metal layer (not shown in the figure). Exemplarily, the first gate metal layer Gate1, the second gate metal layer Gate2, the third gate metal layer, the first source-drain metal layer SD1 and the second source-drain metal layer SD2 are sequentially arranged in a direction away from the substrate 211.

[0079] As described above, the pixel driving circuit is electrically connected to the light emitting device EL and is used to drive the light emitting device EL to emit light. The following will continue to refer to FIG. 1B The light emitting device EL is exemplified.

[0080] In some examples, as shown in FIG. 1B The light emitting device EL is located on the side of the plurality of conductive film layers 216 away from the substrate 211. Since the sub-pixel 220 includes the pixel driving circuit located in the plurality of conductive film layers 210 and the light emitting device EL located on the side of the plurality of conductive film layers 216 away from the substrate 211, that is, the plurality of sub-pixels 220 are located on one side of the substrate 211.

[0081] Exemplarily, as shown in FIG. 1B The light emitting device EL includes an anode layer AND, a light emitting functional layer EML and a cathode layer CTD arranged in a direction away from the substrate 211.

[0082] In some examples, the light-emitting functional layer EML includes a plurality of effective light-emitting parts arranged at intervals, and the effective light-emitting parts are configured to emit light. For example, the effective light-emitting parts include electroluminescent materials. It can be understood that electroluminescence refers to a phenomenon that organic semiconductor materials emit light by radiative recombination of excitons formed by carrier injection, transport, and electron-hole combination under the drive of an electric field.

[0083] In some examples, as shown in FIG. 2, the display substrate 210 further includes a pixel definition layer PDL, and the pixel definition layer PDL includes a plurality of opening regions, and one effective light-emitting part is located in one opening region, so that the plurality of effective light-emitting parts can be arranged at intervals. FIG. 1B

[0084] It can be understood that a part of the plurality of effective light-emitting parts is configured to emit red light, another part is configured to emit green light, and still another part is configured to emit blue light. For example, different electroluminescent materials can be selected so that the effective light-emitting parts can emit light of different colors. It can be understood that the number of the effective light-emitting parts emitting red light, the effective light-emitting parts emitting green light, and the effective light-emitting parts emitting blue light can be the same or different.

[0085] For example, the effective light-emitting parts emitting red light, the effective light-emitting parts emitting green light, and the effective light-emitting parts emitting blue light can be arranged in a mixed array. In this way, by controlling the light-emitting intensity of the different effective light-emitting parts, red light, green light, and blue light of different intensities can be obtained. Mixing the red light, green light, and blue light of different intensities can make the touch display panel 200 realize full-color image display.

[0086] In some examples, one pixel driving circuit is electrically connected to one effective light-emitting part through the anode layer AND, so that each pixel driving circuit can provide driving current to each effective light-emitting part through the anode layer AND, that is, the plurality of effective light-emitting parts emit light independently, the mutual interference between the plurality of effective light-emitting parts is reduced, and the display effect of the touch display panel 200 is improved. It can be understood that by adjusting the size of the driving current provided by the pixel driving circuit to the effective light-emitting part, the light-emitting brightness of the effective light-emitting part can be adjusted.

[0087] In some examples, the anode layer AND is a metal material, for example, copper or silver, etc. The cathode layer CTD is a transparent material, for example, transparent indium tin oxide (English full name: Indium Tin Oxide, English abbreviation: ITO) or transparent indium zinc oxide (English full name: Indium Zinc Oxide, English abbreviation: IZO), etc., so that the light emitted by the effective light-emitting part can be emitted through the cathode layer CTD, that is, the display substrate 210 is a top-emitting display substrate.

[0088] ​In other examples, the anode layer AND is a transparent material, such as ITO or IZO, and the cathode layer CTD is a metallic material, such as copper or silver, so that the light emitted by the effective light-emitting part can be emitted through the anode layer AND. In this case, the display substrate 210 is a bottom-emitting display substrate.

[0089] In some other examples, the anode layer AND and the cathode layer CTD are both transparent materials, such as ITO or IZO, so that the light emitted by the effective light-emitting part can be emitted through the anode layer AND and the cathode layer CTD. In this case, the display substrate 210 is a double-sided light-emitting display substrate.

[0090] The embodiments disclosed herein take a display substrate 210 as a top-emitting display substrate as an example, and will continue to illustrate with examples. It can be understood that the touch function layer 100 is located on the display side of the display substrate 210, that is, the touch function layer 100 is located on the side of the anode layer AND away from the cathode layer CTD.

[0091] In some examples, at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron blocking layer (EBL) is disposed between the anode layer AND and the effective light-emitting part along the direction from the anode layer AND to the effective light-emitting part. Similarly, at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole blocking layer (HBL) is disposed between the cathode layer CTD and the effective light-emitting part along the direction from the cathode layer CTD to the effective light-emitting part. This arrangement improves the light-emitting reliability of the effective light-emitting part.

[0092] In some examples, such as FIG. 1B As shown, the display substrate 210 also includes a planarization layer 213, which is located between the multilayer conductive film layer 216 and the light-emitting device EL, that is, the light-emitting device EL is located on the side of the planarization layer 213 away from the multilayer conductive film layer 216. Understandably, the surface of the planarization layer 213 away from the multilayer conductive film layer 216 is a smooth or nearly smooth plane.

[0093] In some examples, the multilayer conductive film layer 216 includes not only the pixel driving circuit but also multiple signal leads (such as data lines and power signal lines). These signal leads are electrically connected to the pixel driving circuit and the light-emitting device EL to transmit electrical signals, enabling the pixel driving circuit to drive the light-emitting device EL to emit light and achieve the display of different gray levels.

[0094] In some examples, such as FIG. 1B As shown, the display substrate 210 also includes an encapsulation layer 214. The encapsulation layer 214 is located on the side of the light-emitting device EL away from the substrate 211. Understandably, the encapsulation layer 214 can cover the light-emitting device EL, encapsulating the light-emitting device EL to prevent moisture and oxygen from the external environment from entering the light-emitting device EL, thereby protecting the light-emitting device EL.

[0095] FIG. 1C This is a structural diagram of the touch function layer according to some embodiments. FIG. 1D This is a structural diagram of an electrode plate according to some embodiments. Refer to the following... FIG. 1C and FIG. 1D An example is given for the touch function layer 100.

[0096] In some examples, such as FIG. 1C As shown, the touch function layer 100 includes multiple touch electrodes 110 and multiple touch leads 120, and the multiple touch leads 120 are electrically connected to the multiple touch electrodes 110.

[0097] For example, the touch electrode 110 is a Metal Mesh touch electrode, and the touch display panel 200 is a Metal Mesh TSP.

[0098] For example, such as FIG. 1C As shown, the plurality of touch electrodes 110 include a plurality of first touch electrodes 111 and a plurality of second touch electrodes 112. The plurality of first touch electrodes 111 are arranged at intervals along a first direction X1 and all extend along a second direction Y1 that intersects the first direction X1. It can be understood that the plurality of first touch electrodes 111 arranged along the first direction X1 are insulated from each other.

[0099] For example, such as FIG. 1C As shown, a plurality of second touch electrodes 112 are arranged at intervals along a second direction Y1, and all of the plurality of second touch electrodes 112 extend along a first direction X1. It is understood that the plurality of second touch electrodes 112 arranged along the second direction Y1 are insulated from each other. For example, the first direction X1 is perpendicular to the second direction Y1.

[0100] In some examples, the first touch electrode 111 is a Tx (Transmit) and the second touch electrode 112 is an Rx (Receive). In other examples, the first touch electrode 111 is an Rx (Receive) and the second touch electrode 112 is a Tx (Transmit).

[0101] In some examples, such as FIG. 1C As shown, the edge of the smallest enclosed graphic area where the multiple first touch electrodes 111 and multiple second touch electrodes 112 are located coincides with the edge of the display area AA.

[0102] For example, such as FIG. 1D As shown, the plurality of second touch electrodes 112 and the plurality of first touch electrodes 111 intersect each other and are insulated from each other. It can be understood that the plurality of second touch electrodes 112 and the plurality of first touch electrodes 111 intersect each other, that is, the orthographic projection of the plurality of first touch electrodes 111 on the display substrate 210 intersects with the orthographic projection of the plurality of second touch electrodes 112 on the display substrate 210.

[0103] Understandably, such as FIG. 1C As shown, since the multiple first touch electrodes 111 and multiple second touch electrodes 112 intersect and are mutually insulated, each intersection position of the multiple first touch electrodes 111 and multiple second touch electrodes 112 can form a capacitor unit (i.e., a touch pattern) 113. For example, the multiple capacitor units 113 are located within the display area AA and are arranged in an array.

[0104] In some examples, the capacitor cell 113 is square or approximately square; for example, the side length of the square capacitor cell 113 can be 4 mm.

[0105] Understandably, when a person touches the capacitor unit 113 with their finger or a stylus, the capacitance of the finger or stylus is superimposed on the corresponding capacitor unit 113, causing a change in the capacitance value of the capacitor unit 113. In this way, by obtaining the capacitance values ​​of multiple capacitor units 113, the touch position can be determined, thereby realizing the touch function.

[0106] Understandably, since multiple touch electrodes 110 and multiple touch leads 120 are electrically connected, and the multiple touch electrodes 110 can form a capacitor unit 113, the multiple touch leads 120 can be electrically connected to the multiple capacitor units 113.

[0107] FIG. 1EThis is a structural diagram of a capacitor cell according to some embodiments. Refer to the following... FIG. 1D and FIG. 1E Here is an example illustrating the touch electrode.

[0108] For example, such as FIG. 1D and FIG. 1E As shown, the first touch electrode 111 includes multiple touch structures 1111 and multiple connection structures 1112. The multiple touch structures 1111 are spaced apart along the second direction Y1, and the connection structures 1112 are located between any two adjacent touch structures 1111 and are electrically connected to any two adjacent touch structures 1111, so that the first touch electrode 111 can extend along the second direction Y1.

[0109] For example, such as FIG. 1E As shown, any touch structure 1111 includes a first portion 114, and the first portions 114 of any two adjacent first touch structures 1111 are arranged opposite each other. In some examples, a touch structure 1111 may include two first portions 114, and the two first portions 114 have the same shape and area.

[0110] For example, such as FIG. 1E As shown, the second touch electrode 112 includes a plurality of touch sub-electrodes 1121 and a plurality of bridging portions 1122. The plurality of touch sub-electrodes 1121 are spaced apart along a first direction X1, and the bridging portions 1122 are located between any two adjacent touch sub-electrodes 1121 and are electrically connected to any two adjacent touch sub-electrodes 1121, so that the second touch electrode 112 can extend along the first direction X1.

[0111] For example, such as FIG. 1E As shown, each touch sub-electrode 1121 includes a second portion 115, and the second portions 115 of any two adjacent touch sub-electrodes 1121 are disposed opposite each other. In some examples, a touch sub-electrode 1121 may include two second portions 115, and the two second portions 115 have the same shape and area.

[0112] For example, such as FIG. 1E As shown, the orthographic projection of the connecting structure 1112a on the display substrate 210 intersects with the orthographic projection of the bridging portion 1122a on the display substrate 210. It should be noted that the connecting structure 1112a and the bridging portion 1122a are only used to define the connecting structure 1112 and the bridging portion 1122 whose orthographic projections intersect on the display substrate 210, and do not further define the connecting structure 1112 and the bridging portion 1122.

[0113] like FIG. 1EAs shown, the plurality of touch structures 1111 include a first touch structure 1111a and a second touch structure 1111b arranged adjacent to each other, and a connection structure 1112a is located between the first touch structure 1111a and the second touch structure 1111b, and is electrically connected to the first touch structure 1111a and the second touch structure 1111b respectively.

[0114] It should be noted that the first touch structure 1111a and the second touch structure 1111b are only used to distinguish the two touch structures 1111 that are electrically connected to and adjacent to the connection structure 1112a, and do not further limit the touch structure 1111.

[0115] like FIG. 1E As shown, the plurality of touch sub-electrodes 1121 include a first touch sub-electrode 1121a and a second touch sub-electrode 1121b, and a bridging portion 1122a is located between the first touch sub-electrode 1121a and the second touch sub-electrode 1121b, and is electrically connected to the first touch sub-electrode 1121a and the second touch sub-electrode 1121b respectively.

[0116] It should be noted that the first touch sub-electrode 1121a and the second touch sub-electrode 1121b are only used to distinguish the two touch sub-electrodes 1121 that are electrically connected to and adjacent to the bridging part 1122a, and do not further limit the touch sub-electrodes 1121.

[0117] For example, such as FIG. 1C As shown, the first portion 114a of the first touch structure 1111a and the first portion 114b of the second touch structure 1111b are arranged opposite to each other, and the second portion 115a of the first touch sub-electrode 1121a and the second portion 115b of the second touch sub-electrode 1121b are arranged opposite to each other. The first portion 114a of the first touch structure 1111a, the first portion 114b of the second touch structure 1111b, the second portion 115a of the first touch sub-electrode 1121a, the second portion 115b of the second touch sub-electrode 1121b, the connecting structure 1112a, and the bridging portion 1122a can constitute a capacitor unit 113.

[0118] It should be noted that the first parts 114a and 114b are only used to distinguish the first part 114 of the first touch structure 1111a and the first part 114 of the second touch structure 1111b, and do not further limit the first part 114. The second parts 115a and 115b are only used to distinguish the second part 115 of the first touch sub-electrode 1121a and the second part 115 of the second touch sub-electrode 1121b, and do not further limit the second part 115.

[0119] As described above, the plurality of touch electrodes 110 are electrically connected to the plurality of touch leads 120. In some examples, as shown in FIG. 1A, the plurality of touch leads 120 include a first type of touch lead 120a and a second type of touch lead 120b. FIG. 1C

[0120] In some examples, as shown in FIG. 1A, the plurality of touch leads 120 include a first type of touch lead 120a and a second type of touch lead 120b. FIG. 1C

[0121] In some examples, as shown in FIG. 1A, the plurality of touch leads 120 include a first type of touch lead 120a and a second type of touch lead 120b. FIG. 1C

[0122] It should be noted that the first type of touch lead 120a and the second type of touch lead 120b are only used to distinguish the touch leads 120 electrically connected to the first touch electrode 111 and the second touch electrode 112, and do not further limit the touch leads 120.

[0123] In some examples, as shown in FIG. 1A, the plurality of touch electrodes 110 are located in the display area AA, and the plurality of touch leads 120 are located in the peripheral area CC. FIG. 2A

[0124] In some examples, as shown in FIG. 1A, the plurality of touch electrodes 110 are located in the display area AA, and the plurality of touch leads 120 are located in the peripheral area CC.

[0125] ​​​​It can be understood that, as the size resolution (English full name: Pixels Per Inch, English abbreviation PPI) of the touch display panel 200 is higher and higher, the number of lead lines (such as touch lead lines 120, power signal lines, or other lead lines) that need to be arranged in the peripheral area CC of the touch display panel 200 is more and more, which leads to the increase of the width of the peripheral area CC, thereby leading to the increase of the width of the frame (such as the frame along the two sides of the first direction X1 and the frame along the two sides of the second direction Y1) of the touch display panel 200, which is not conducive to the narrow frame of the touch display panel 200, and affects the visual effect of the touch display panel 200.

[0126] FIG. 2A A structural diagram of a touch display panel according to still another embodiment.

[0127] Based on this, the embodiments of the present disclosure provide a touch display panel 200. The following refers to the accompanying drawings to describe the touch display panel 200 provided by the embodiments of the present disclosure. FIG. 2A The touch display panel 200 provided by the embodiments of the present disclosure is exemplified.

[0128] In some embodiments, as shown in FIG. 2A , the touch display panel 200 has a display area AA and a fan-out area BB located on one side of the display area. It can be understood that the display area AA is used to display image information, and the fan-out area BB is used to place lead lines electrically connected to the display area AA.

[0129] In some examples, in the use state of the touch display panel 200, the fan-out area BB is located below the display area AA, that is, in some use states, the fan-out area BB can be closer to the ground relative to the display area AA.

[0130] As can be seen from the above, the peripheral area CC of the touch display panel 200 surrounds the display area AA. Exemplarily, as shown in FIG. 2A , the fan-out area BB is located in the peripheral area CC of the touch display panel 200.

[0131] As shown in FIG. 2A , the display area AA includes a first display area AA1 and a second display area AA2 located around the first display area AA1. It can be understood that the first display area AA1 and the second display area AA2 can both display image information.

[0132] The second display area AA2 is located around the first display area AA1. Exemplarily, as shown in FIG. 2A , the edge of the second display area AA2 close to the first display area AA1 is coincident with the edge of the first display area AA1 close to the second display area AA2, so that the second display area AA2 can surround the first display area AA1 and be arranged adjacent to the first display area AA1.

[0133] The fan-out area BB is located at one side of the display area AA, and in some examples, the fan-out area BB is arranged adjacent to the second display area AA2. For example, the fan-out area BB is close to the edge of the second display area AA2, and coincides with the edge of the second display area AA2 close to the fan-out area BB.

[0134] It should be noted that in the drawings of the present disclosure, the display area AA is divided into the first display area AA1 and the second display area AA2, and the fan-out area BB is located at one side of the display area AA, and in some examples, the fan-out area BB is arranged adjacent to the second display area AA2. For example, the fan-out area BB is close to the edge of the second display area AA2, and coincides with the edge of the second display area AA2 close to the fan-out area BB. FIG. 2A For example, the fan-out area BB is separated from the edge of the second display area AA2, which is only for the convenience of showing the fan-out area BB and the second display area AA2, and does not further limit the fan-out area BB and the second display area AA2.

[0135] The touch display panel 200 includes a display substrate 210 and a touch function layer 100. The display substrate 210 has a display side, and the touch function layer 100 is located on the display side of the display substrate 210. The touch function layer 100 includes a plurality of touch electrodes 110 and a plurality of touch lead lines 120, and the plurality of touch lead lines 120 are electrically connected with the plurality of touch electrodes 110.

[0136] It can be understood that the above embodiments of the present disclosure have exemplified the display substrate 210, the touch electrodes 110, and the electrical connection relationship between the plurality of touch lead lines 120 and the plurality of touch electrodes 110, and the like, which will not be repeated here.

[0137] As shown in FIG. 1, the plurality of touch electrodes 110 are located in the first display area AA1, and the plurality of touch lead lines 120 extend to the fan-out area BB via the second display area AA2. FIG. 2A It can be understood that the plurality of touch electrodes 110 are located in the first display area AA1, so that the touch function can be realized in the first display area AA1. The plurality of touch lead lines 120 are electrically connected with the plurality of touch electrodes 110. For example, as shown in FIG. 1, one end of the plurality of touch lead lines 120 is located in the first display area AA1 and is electrically connected with the touch electrodes 110, and the other end extends to the fan-out area BB via the second display area AA2.

[0138] FIG. 2A It can be understood that the plurality of touch electrodes 110 are located in the first display area AA1, so that the touch function can be realized in the first display area AA1. The plurality of touch lead lines 120 are electrically connected with the plurality of touch electrodes 110. For example, as shown in FIG. 1, one end of the plurality of touch lead lines 120 is located in the first display area AA1 and is electrically connected with the touch electrodes 110, and the other end extends to the fan-out area BB via the second display area AA2.

[0139] It can be understood that the plurality of touch lead lines 120 are arranged to extend to the fan-out area BB via the second display area AA2, which avoids the touch lead lines 120 occupying the space in the peripheral area CC, reduces the width of the peripheral area CC of the touch display panel 200, thereby being able to reduce the side frame (for example, the frame along the first direction X1 and the frame along the second direction Y1) width of the touch display panel 200, facilitates the realization of the narrow frame of the touch display panel 200, so that the touch display panel 200 can maximize the display area AA and minimize the peripheral area CC, and improve the visual effect of the touch display panel 200.

[0140] ​In some examples, multiple touch leads 120 are provided to extend from the second display area AA2 to the fan-out area BB, so that the touch display panel 200 can be borderless on both sides along the first direction X1 and on the side of the touch display panel 200 away from the fan-out area BB, thereby improving the visual effect of the touch display panel 200.

[0141] Furthermore, in the embodiments of this disclosure, multiple touch electrodes 110 are located in the first display area AA1, and multiple touch leads 120 extend from the second display area AA2 to the fan-out area BB, which reduces the mutual influence between the touch leads 120 and the touch electrodes 110 and improves the reliability of the touch display panel 200.

[0142] As described above, the plurality of first touch electrodes 111 and the plurality of second touch electrodes 112 intersect and are insulated from each other, thereby forming a capacitor unit 113 at each intersection location. For example, as shown... FIG. 2B As shown, multiple capacitor units 113 can be arranged in an array along a first direction X1 and a second direction Y1, and the multiple capacitor units 113 arranged along the first direction X1 are electrically connected, and the multiple capacitor units 113 arranged along the second direction Y1 are electrically connected.

[0143] FIG. 2B This is a structural diagram of the touch function layer according to some other embodiments.

[0144] As can be seen from the above, if FIG. 2B As shown, the plurality of touch electrodes 110 include a plurality of first touch electrodes 111 and a plurality of second touch electrodes 112. A portion (two or more) of the plurality of touch leads 120 are electrically connected to the first touch electrodes 111, and another portion (two or more) are electrically connected to the second touch electrodes 112.

[0145] For example, such as FIG. 2B As shown, the first type of touch lead 120a, electrically connected to the first touch electrode 111, extends to the fan-out area BB via a portion of the second display area AA2 located on both sides of the first display area AA1 along the second direction Y1 and a portion located on one side of the first display area AA1 along the first direction X1. Alternatively, the first type of touch lead 120a, electrically connected to the first touch electrode 111, extends to the fan-out area BB via a portion of the second display area AA2 located on one side of the first display area AA1 along the second direction Y1 and close to the fan-out area BB.

[0146] For example, such as FIG. 2AAs shown, the second type of touch control lead 120b electrically connected with the second touch control electrode 112 extends to the fan-out area BB via the part of the second display area AA2 located on both sides of the first display area AA1 along the first direction X1 and the part located on one side of the first display area AA1 along the second direction Y1 and close to the fan-out area BB.

[0147] In some examples, the material of the touch control lead 120 can be transparent indium tin oxide (English full name: Indium Tin Oxide, English abbreviation: ITO) or transparent indium zinc oxide (English full name: Indium Zinc Oxide, English abbreviation: IZO), etc., which reduces the impact of the touch control lead 120 on the image information displayed in the second display area AA2.

[0148] In some examples, as shown in FIG. 2B, the touch control display panel 200 further includes a connection area 230 located in the peripheral area CC. For example, the connection area 230 is located on the side of the fan-out area BB away from the display area AA. A plurality of connection pins (not shown in the figure) are arranged in the connection area 230. The touch control lead 120 extends to the connection area 230 and is electrically connected with the connection pins in the connection area 230. FIG. 2A

[0149] For example, a flexible printed circuit (English full name: Flexible Printed Circuit, English abbreviation: FPC, not shown in the figure) outside the touch control display panel 200 can be bound to the plurality of connection pins in the connection area 230. A touch control integrated circuit (English full name: Integrated Circuit, English abbreviation: IC, not shown in the figure) is mounted on the flexible printed circuit. The touch control IC can obtain the capacitance values of the plurality of touch control electrodes 110 through the flexible printed circuit and the touch control lead 120, that is, the capacitance values of the plurality of capacitive units 113, so that the touch control IC can determine the touch position according to the capacitance values of the plurality of capacitive units 113. For example, the touch control IC adopts a chip on film (English full name: Chip On Film, English abbreviation: COF) process and is mounted on the flexible printed circuit.

[0150] In some examples, as shown in FIG. 2B, the touch control display panel 200 further includes a plurality of data lines 160. For example, one end of the plurality of data lines 160 is electrically connected with the plurality of sub-pixels 220, and the other end is electrically connected with the connection pins in the connection area 230. FIG. 2A FIG. 2A For example, a driving integrated circuit (English full name: Integrated Circuit, English abbreviation: IC, not shown in the figure) outside the touch control display panel 200 is electrically connected with the plurality of data lines 160 through the connection pins in the connection area 230, so that the driving IC can output data signals to the sub-pixels 220 through the plurality of data lines 160, thereby driving the sub-pixels 220 to emit light.

[0151] ​​In some examples, the driving IC is mounted on a flexible circuit board which is bonded to the connection region 230 by a COF (Chip On Flex) process.

[0152] In some examples, an end of the flexible circuit board which is away from the connection region 230 is electrically connected to the main control circuit board.

[0153] In some examples, as shown in FIG. 2A, the driving IC is mounted on a flexible circuit board which is bonded to the connection region 230 by a COF (Chip On Flex) process. FIG. 2C In some examples, as shown in FIG. 2A, the touch display panel 200 further has a bending region DD which is located in the peripheral region CC. In an example, the bending region DD is located between the fan-out region BB and the connection region 230.

[0154] It can be understood that the bending region DD can be bent away from the display side, so that the connection region 230 can be located on the back of the display substrate 210 (i.e., the side away from the display side), avoiding the connection region 230 and the flexible circuit board bonded to the connection region 230 from occupying the space on the display side of the display substrate 210, reducing the width of the lower frame (the frame on the side close to the fan-out region BB) of the touch display panel 200, and improving the visual effect of the touch display panel 200.

[0155] FIG. 2C FIG. 2B is a structural diagram of a touch display panel according to yet another embodiment.

[0156] As described above, in some examples, the driving IC is mounted on a flexible circuit board which is bonded to the connection region 230 by a COF (Chip On Flex) process. In other examples, as shown in FIG. 2A, the touch display panel 200 further includes a bonding region 240. The bonding region 240 is located in the peripheral region CC and between the connection region 230 and the bending region DD. FIG. 2C The driving IC (see 242 in FIG. 2B) is bonded to the substrate 211 in the bonding region 240 of the display substrate 210 by a COP (Chip On Panel) process. FIG. 2A

[0157] In an example, the plurality of data lines 160 are electrically connected to the bonding region 240, so that the driving IC can output data signals to the sub-pixels 220 through the plurality of data lines 160, thereby driving the sub-pixels 220 to emit light.

[0158] In an example, as shown in FIG. 2B, the plurality of data lines 160 are close to and converge in the fan-out region BB, i.e., in the fan-out region BB, the distance between at least two data lines 160 of the plurality of data lines 160 gradually decreases. FIG. 2A

[0159] In some examples, as shown in FIG. 2B, the plurality of data lines 160 are close to and converge in the fan-out region BB, i.e., in the fan-out region BB, the distance between at least two data lines 160 of the plurality of data lines 160 gradually decreases. FIG. 2D ​​As shown, in the fan-out area BB, the plurality of touch lead lines 120 are located on both sides of the plurality of data lines 160. In this way, the length of the touch lead line 120 is shortened, the resistance of the touch lead line 120 is reduced, the load of the touch lead line 120 is reduced, and the transmission reliability of the signal on the touch lead line 120 is improved.

[0160] As described above, in the embodiments of the present disclosure, the touch electrode 110 is arranged in the first display area AA1, and the touch lead line 120 is arranged to extend to the fan-out area BB via the second display area AA2, thereby avoiding the touch lead line 120 occupying the space of the peripheral area CC of the touch display panel 200, so as to reduce the width of the peripheral area CC, facilitate the narrow frame of the touch display panel 200, and improve the visual effect of the touch display panel 200.

[0161] In addition, the touch lead line 120 is arranged to extend to the fan-out area BB via the second display area AA2, and the touch electrode 110 is arranged in the first display area AA1, thereby reducing the mutual influence between the touch lead line 120 and the touch electrode 110, improving the touch performance of the touch function layer 100 on the basis of realizing the narrow frame of the touch display panel 200, and thereby improving the use performance of the touch display panel 200.

[0162] In addition, since the touch lead line 120 is thin, arranging the touch lead line 120 in the display area AA2 has little effect on the image information displayed in the display area AA2, reduces the risk of the touch lead line 120 being perceived by the naked eye, and improves the display performance of the touch display panel 200.

[0163] In addition, arranging the touch lead line 120 to extend to the fan-out area BB via the second display area AA2 is simple in process and easy to implement, improves the production efficiency of the touch display panel 200, and reduces the cost of the touch display panel 200.

[0164] FIG. 2E A position relationship diagram between the touch active area and the display area according to some embodiments. FIG. 1C A structure diagram of a touch display panel according to still another embodiment.

[0165] As described above, the plurality of touch electrodes 110 include a plurality of first touch electrodes 111 and a plurality of second touch electrodes 112. The plurality of first touch electrodes 111 are arranged at intervals along a first direction X1, and each extends along a second direction Y1 intersecting the first direction X1. The plurality of second touch electrodes 112 are arranged at intervals along the second direction Y1, and each extends along the first direction X1. The plurality of second touch electrodes 112 and the plurality of first touch electrodes 111 intersect each other and are insulated from each other to form a capacitor unit 113 at each intersection position.

[0166] For example, as shown in FIG. 1, the touch display panel 200 includes a touch function layer 100, a display function layer 300, and a substrate 400. FIG. 1CAs shown, the plurality of touch electrodes 110 can form a plurality of capacitive units 113, and the edge of the smallest closed figure region where the plurality of touch electrodes 110 are located coincides with the edge of the display area AA.

[0167] As can be understood, as shown, since the capacitive units 113 are square or approximately square, and the edge of the smallest closed figure region where the plurality of touch electrodes 110 are located coincides with the edge of the display area AA, when the shape of the display area AA is rectangular, circular or other irregular shape, part of the touch electrodes 110 at the edge cannot form a complete capacitive unit 113. FIG. 2D

[0168] That is, as shown, there is a gap between the edge of the smallest closed figure region where the plurality of capacitive units 113 are located and the edge of the display area AA. It should be noted that, FIG. 2D FIG. 2D The part of the smallest closed figure region where the plurality of capacitive units 113 are located shown in FIG. 7 is not limited by the number of capacitive units 113 in the embodiments of the present disclosure.

[0169] As can be understood, as shown, when a human finger or a stylus touches the smallest closed figure region where the plurality of capacitive units 113 are located, the touch display panel 200 can obtain the touch position. When a human finger or a stylus touches the area inside the display area AA and outside the smallest closed figure region where the plurality of capacitive units 113 are located, the touch display panel 200 cannot accurately obtain the touch position, or even cannot obtain the touch position. FIG. 2D

[0170] As an example, as shown, the smallest closed figure region where the plurality of capacitive units 113 are located can be referred to as a touch effective area (as shown in the area AA3 in FIG. 7), and the area between the display area AA and the touch effective area can be referred to as a touch invalid (English name: Dummy) area (as shown in the area AA4 in FIG. 7). FIG. 2D FIG. 2D FIG. 2E

[0171] As an example, as shown, the touch invalid area is located between the touch effective area and the peripheral area CC, and the touch electrodes 110 are arranged in the touch effective area and the touch invalid area, and the touch lead 120 is arranged in the peripheral area CC. As a result, the width of the peripheral area CC increases, thereby increasing the width of the frame of the touch display panel 200. As an example, the touch electrodes 110 in the touch invalid area can be referred to as Dummy blocks. FIG. 2B As can be understood from the above, in some examples, as shown,

[0172] FIG. 2B ​​​​​​​As shown, the display region AA includes a first display region AA1 and a second display region AA2, and the second display region AA2 surrounds the first display region AA1.

[0173] In some embodiments, as shown in FIG. 1, the touch display panel 200 includes a display layer 210 and a touch functional layer 100. FIG. 2B As shown, the minimum enclosed graphic area where the plurality of capacitive units 113 are located as a whole is the first display region AA1.

[0174] It can be understood that when a human finger or a stylus touches the first display region AA1, the touch display panel 200 can obtain the touch position, that is, the first display region AA1 is a touch effective region. For example, as shown in FIG. 2, the edge of the touch electrode 110 coincides with the edge of the first display region AA1. FIG. 2F As shown, the edge of the touch electrode 110 coincides with the edge of the first display region AA1.

[0175] The second display region AA2 surrounds the first display region AA1, and the touch lead lines are arranged in the second display region AA2. It can be understood that since the edge of the touch electrode 110 coincides with the edge of the first display region AA1, the second display region AA2 does not have the touch electrode 110 arranged therein, so that the second display region AA2 cannot obtain the touch position, that is, the second display region AA2 is a touch ineffective region.

[0176] That is, in the embodiments of the present disclosure, the touch electrode 110 is not arranged in the touch ineffective region, but a plurality of touch lead lines 120 are arranged to extend to the fan-out region BB through the touch ineffective region (that is, the second display region AA2), so that the narrow frame of the touch display panel 200 can be realized without affecting the touch performance of the touch display panel 200, and the reliability of the touch display panel 200 is improved.

[0177] In addition, the edge of the touch electrode 110 coincides with the edge of the first display region AA1, that is, the edge of the touch electrode 110 coincides with the edge of the touch effective region, which avoids the extension of the touch electrode 110 to the touch ineffective region, simplifies the structure of the touch functional layer 100, and reduces the cost of the touch functional layer 100.

[0178] FIG. 2F A partial structural diagram of a touch functional layer according to some embodiments.

[0179] As described above, the plurality of capacitive units 113 can be electrically connected with the plurality of touch lead lines 120. For example, as shown in FIG. 3, the capacitive unit 113 includes a capacitive unit 113a and a capacitive unit 113b, and the capacitive unit 113a and the capacitive unit 113b are arranged adjacent to each other along the second direction Y1. FIG. 2F As shown, the capacitive unit 113 includes a capacitive unit 113a and a capacitive unit 113b, and the capacitive unit 113a and the capacitive unit 113b are arranged adjacent to each other along the second direction Y1. It should be noted that the capacitive unit 113a and the capacitive unit 113b are only used to distinguish two capacitive units 113 arranged adjacent to each other along the second direction Y1, and the capacitive unit 113 is not further limited.

[0180] As shown in FIG. 2F , the touch lead 120 includes a touch lead 120c and a touch lead 120d. The touch lead 120c is electrically connected with the capacitive unit 113a, and the touch lead 120d is electrically connected with the capacitive unit 113b. It should be noted that the touch lead 120c and the touch lead 120d are only used to distinguish the two touch leads 120 electrically connected with the capacitive unit 113a and the capacitive unit 113b, and the touch lead 120 is not further limited.

[0181] For example, as shown in FIG. 2F , since the capacitive unit 113a and the capacitive unit 113b are arranged adjacent along the second direction Y1, the length of the part of the touch lead 120c located in the display area AA is greater than the length of the part of the touch lead 120d located in the display area AA.

[0182] That is, the array arrangement of the plurality of capacitive units 113 causes the lengths of the plurality of touch leads 120 located in the display area AA to be inconsistent, which affects the load consistency between the plurality of touch leads 120, thereby affecting the touch performance of the touch function layer 100.

[0183] In some examples, as shown in FIG. 2G , along the direction away from the display area AA, the lengths of the parts of the plurality of touch leads 120 located in the display area AA gradually increase. In other examples, along the direction away from the display area AA, the lengths of the parts of the plurality of touch leads 120 located in the display area AA gradually decrease.

[0184] FIG. 2H A structural diagram of a touch display panel according to still another embodiment. FIG. 2G A structural diagram of a touch display panel according to still another embodiment.

[0185] Based on this, in some embodiments of the present disclosure, as shown in FIG. 2H and FIG. 2G , among the plurality of touch leads 120, the absolute value of the length difference of the parts of the two touch leads 120 located in the display area AA ranges from 0mm to 4mm.

[0186] It can be understood that the length of the part of the touch lead 120 located in the display area AA is the sum of the length of the part of the touch lead 120 located in the first display area AA1 and the length of the part of the touch lead 120 located in the second display area AA2.

[0187] In some examples, the absolute value of the length difference of the parts of any two touch leads 120 located in the display area AA (including the first display area AA1 and the second display area AA2) ranges from 0mm to 4mm.

[0188] In this way, the length consistency of the portions of the plurality of touch lead lines 120 located in the display area AA is improved, on the one hand, the resistance consistency of the plurality of touch lead lines 120 is improved, on the other hand, the consistency of the parasitic capacitance formed between the plurality of touch lead lines 120 and other film layers (for example, the cathode layer CTD of the display substrate 210 or the touch electrode 110 located in the first display area AA1) is also improved, so that the plurality of touch lead lines 120 can realize equal-capacitance wiring. In this way, the load consistency between the plurality of touch lead lines 120 is improved, the touch performance of the touch function layer 100 is improved, and the use performance of the touch display panel 200 is improved.

[0189] In some examples, the absolute value of the length difference of the portions of any two touch lead lines 120 located in the display area AA can be 0 mm, 1 mm, 2 mm, or 3 mm, etc.

[0190] As described above, the end of the touch lead line 120 away from the touch electrode 110 extends to the fan-out area BB. In some examples, the lengths of the portions of any two touch lead lines 120 located in the fan-out area BB are substantially equal. In this way, on the basis of improving the length consistency of the portions of the plurality of touch lead lines 120 located in the display area AA, the length consistency of the portions of the plurality of touch lead lines 120 located in the fan-out area BB is improved, thereby improving the length consistency of the plurality of touch lead lines 120 as a whole (including the portions located in the display area AA and the portions located in the fan-out area BB), and further improving the touch performance of the touch function layer 100.

[0191] In some embodiments, as shown in FIGS. 1A and 1B, the lengths of the portions of the plurality of touch lead lines 120 located in the display area AA are substantially equal. FIG. 2H and FIG. 3A As shown in FIGS. 1A and 1B, the lengths of the portions of the plurality of touch lead lines 120 located in the display area AA are substantially equal.

[0192] For example, the absolute value of the length difference of the portions of the at least two touch lead lines 120 located in the display area AA can be 0.5 mm, 1.2 mm, 1.8 mm, or 2.2 mm, etc.

[0193] For example, the absolute value of the length difference of the portions of the at least two touch lead lines 120 located in the display area AA can be 0.5 mm, 1.2 mm, 1.8 mm, or 2.2 mm, etc.

[0194] In some examples, the lengths of the portions of any two touch lead lines 120 located in the display area AA are substantially equal.

[0195] In this way, the length consistency of the plurality of touch lead lines 120 in the display area AA is improved, on the one hand, the resistance consistency of the plurality of touch lead lines 120 is improved, on the other hand, the consistency of the parasitic capacitance formed between the plurality of touch lead lines 120 and other film layers (for example, the cathode layer CTD of the display substrate 210 or the touch electrode 110 located in the first display area AA1) is also improved, so that the plurality of touch lead lines 120 can realize equal-capacitance wiring. In this way, the load consistency between the plurality of touch lead lines 120 is improved, the touch performance of the touch function layer 100 is improved, and the use performance of the touch display panel 200 is improved.

[0196] FIG. 3A A structural diagram of a touch display panel according to still another embodiment.

[0197] In some embodiments, as shown in FIG. 3A The first lead-out line 121 is electrically connected to the touch electrode 110 located in the first display area AA1 at one end. The other end of the first lead-out line 121 extends to the second display area AA2. The second lead-out line 122 is electrically connected to the end of the first lead-out line 121 away from the touch electrode 110 at one end, and extends to the junction of the second display area AA2 and the fan-out area BB at the other end. Moreover, the second lead-out line 122 extends along the extension direction of the edge of the first display area AA.

[0198] As can be seen from the above, in some examples, the edge of the second display area AA2 close to the fan-out area BB coincides with the edge of the fan-out area BB close to the second display area AA2. In some examples, the end of the second lead-out line 122 away from the first lead-out line 121 can extend to the edge position of the second display area AA2 coinciding with the fan-out area BB. In other examples, the end of the second lead-out line 122 away from the first lead-out line 121 can also have a gap between the edge of the second display area AA2 and the fan-out area BB.

[0199] It can be understood that one end of the first lead-out line 121 is located in the first display area AA1, so that the first lead-out line 121 can be electrically connected to the touch electrode 110 located in the first display area AA1. The other end of the first lead-out line 121 extends from the first display area AA1 to the second display area AA2. One end of the second lead-out line 122 is electrically connected to the first lead-out line 121, and the other end extends to the junction of the second display area AA2 and the fan-out area BB. That is, the first lead-out line 121 and the second lead-out line 122 are both located in the display area AA (including the first display area AA1 and the second display area AA2).

[0200] In some examples, as shown in FIG. 3AAs shown, the lengths of the plurality of second lead-out lines 122 gradually increase in a direction away from the display area AA. In other examples, the lengths of the plurality of second lead-out lines 122 gradually decrease in a direction away from the display area AA.

[0201] In some examples, as shown in FIG. 1, the plurality of touch lead lines 120 further includes a third lead-out line 127. The third lead-out line 127 is located in the fan-out area BB and is electrically connected to an end of the second lead-out line 122 away from the first lead-out line 121. In this way, the electrical signal can be transmitted between the fan-out area BB and the first display area AA1 via the first lead-out line 121, the second lead-out line 122 and the third lead-out line 127. FIG. 3A

[0202] In some examples, as shown in FIG. 1, the plurality of touch lead lines 120 further includes a third lead-out line 127. The third lead-out line 127 is located in the fan-out area BB and is electrically connected to an end of the second lead-out line 122 away from the first lead-out line 121. In this way, the electrical signal can be transmitted between the fan-out area BB and the first display area AA1 via the first lead-out line 121, the second lead-out line 122 and the third lead-out line 127. FIG. 3A

[0203] In some examples, the sum of the lengths of the first lead-out line 121 and the second lead-out line 122 in any of the plurality of touch lead lines 120 is a first set length value. As shown in FIG. 1, the first set length value of the first lead-out line 121 is L1, and the first set length value of the second lead-out line 122 is L2. FIG. 3A

[0204] In some examples, the number of the second touch lead lines 124 is a plurality, and the first set length values of the plurality of second touch lead lines 124 are substantially equal. The number of the first touch lead lines 123 is a plurality, and the first set length values of the plurality of first touch lead lines 123 can be equal or not equal. It can be understood that the first set length value of any of the first touch lead lines 123 is less than the first set length value of the second touch lead line 124.

[0205] In some examples, as shown in FIG. 1, the first touch lead line 123 further includes a first compensation line 125. The first compensation line 125 is located in the second display area AA2 and is electrically connected to the first lead-out line 121 and / or the second lead-out line 122 in the first touch lead line 123. FIG. 3A

[0206] ​​​​In some examples, the first compensation line 125 is electrically connected with the first lead-out line 121 in the first touch lead line 123. In other examples, the first compensation line 125 is electrically connected with the second lead-out line 122 in the first touch lead line 123. In yet other examples, the first compensation line 125 is electrically connected with the end point of the first lead-out line 121 and the second lead-out line 122 in the first touch lead line 123, so that the first compensation line 125 can be electrically connected with the first lead-out line 121 and the second lead-out line 122 in the first touch lead line 123.

[0207] It can be understood that the first compensation line 125 is electrically connected with the first lead-out line 121 and / or the second lead-out line 122 in the first touch lead line 123, so that the electrical signal on the first lead-out line 121 and the second lead-out line 122 in the first touch lead line 123 can be transmitted to the first compensation line 125.

[0208] As described above, the first length value of the first touch lead line 123 is less than the first length value of the second touch lead line 124. Therefore, the first compensation line 125 is electrically connected with the first lead-out line 121 and / or the second lead-out line 122 in the first touch lead line 123, so that the first compensation line 125 can compensate the first touch lead line 123, reduce the absolute value of the difference between the sum of the first length value of the first touch lead line 123 and the length of the first compensation line 125, and the first length value of the second touch lead line 124, that is, reduce the absolute value of the difference between the lengths of the parts of the plurality of touch lead lines 120 located in the display area AA.

[0209] In this way, the length consistency of the parts of the plurality of touch lead lines 120 located in the display area AA is improved, on the one hand, the resistance consistency of the plurality of touch lead lines 120 is improved, and on the other hand, the consistency of the parasitic capacitance formed between the plurality of touch lead lines 120 and other film layers (such as the cathode layer CTD of the display substrate 210 or the touch electrode 110 located in the first display area AA1) is improved, so that the plurality of touch lead lines 120 can realize equal-capacitance wiring. In this way, the load consistency between the plurality of touch lead lines 120 is improved, the touch performance of the touch function layer 100 is improved, and the use performance of the touch display panel 200 is improved.

[0210] In some examples, the sum of the length of the second lead-out line 122 and the length of the first compensation line 125 in the first touch lead line 123 is a second set length value. The absolute value of the difference between the second set length values of any two first touch lead lines 123 is in the range of 0mm-4mm.

[0211] In some examples, the absolute value of the difference between the second set length values of any two first touch lead lines 123 is in the range of 0mm-4mm.

[0212] It can be understood that, since the second lead-out line 122 and the first compensation line 125 in the first touch lead line 123 are located in the display area AA (the second display area AA2), the absolute value of the difference between the second set length values of the two first touch lead lines 123 is 0mm-4mm, which can improve the length consistency of the positions of the plurality of first touch lead lines 123 in the display area AA (the second display area AA2).

[0213] In this way, on the one hand, the resistance consistency between the plurality of first touch lead lines 123 can be improved, and the resistance difference between the plurality of first touch lead lines 123 can be reduced. On the other hand, the consistency of the parasitic capacitance formed between the plurality of first touch lead lines 123 and other film layers (such as the cathode layer CTD of the display substrate 210 or the touch electrode 110 located in the first display area AA1) can also be improved, so that the plurality of first touch lead lines 123 can realize equal-capacitance wiring. In this way, the load consistency between the plurality of first touch lead lines 123 can be improved, and the touch performance of the touch function layer 100 can be improved, thereby improving the use performance of the touch display panel 200.

[0214] For example, the absolute value of the difference between the second set length values of any two first touch lead lines 123 can be 0mm, 1mm, 2mm or 3mm, etc.

[0215] As described above, the touch lead line 120 (including the first touch lead line 123 and the second touch lead line 123) includes the first lead-out line 121. In some examples, the lengths of the first lead-out lines 121 of the plurality of touch lead lines 120 (including the first touch lead line 123 and the second touch lead line 123) are substantially equal, which improves the length consistency of the positions of the plurality of touch lead lines 120 (including the first touch lead line 123 and the second touch lead line 123) in the display area AA, thereby improving the load consistency between the plurality of touch lead lines 120 (including the first touch lead line 123 and the second touch lead line 123), and thereby improving the touch performance of the touch function layer 100.

[0216] In some examples, the second set length value of any first touch lead line 123 (i.e., the sum of the lengths of the second lead-out line 122 and the first compensation line 125 of the first touch lead line 123) is substantially equal to the length of the second lead-out line 122 of the second touch lead line 124.

[0217] In this way, the length consistency of the positions of the plurality of touch lead lines 120 (including the first touch lead line 123 and the second touch lead line 123) in the display area AA can be improved, thereby improving the load consistency between the plurality of touch lead lines 120 (including the first touch lead line 123 and the second touch lead line 123), and thereby improving the touch performance of the touch function layer 100.

[0218] In some embodiments, such as FIG. 3A As shown, the second set length values ​​of at least two first touch leads 123 are substantially equal.

[0219] For example, the absolute value of the second set length value of at least two first touch leads 123 can be in the range of 0mm to 3mm, 0mm to 2mm, or 0mm to 1mm, etc.

[0220] For example, the absolute value of the difference between the second set length values ​​of at least two first touch leads 123 can be 0.5mm, 1.2mm, 1.8mm or 2.2mm, etc.

[0221] In some examples, the second set length values ​​of any two first touch leads 123 are substantially equal.

[0222] This configuration improves the resistance consistency among the multiple first touch leads 123, reducing resistance differences between them. Furthermore, it enhances the consistency of parasitic capacitance between the multiple first touch leads 123 and other film layers (such as the cathode layer CTD of the display substrate 210 or the touch electrode 110 located in the first display area AA1), enabling equal capacitance wiring among the multiple first touch leads 123. This, in turn, improves the load consistency among the multiple first touch leads 123, enhances the touch performance of the touch functional layer 100, and thus improves the usability of the touch display panel 200.

[0223] In some embodiments, such as FIG. 3A As shown, the first touch lead 123 includes a first touch lead 123a and a second first touch lead 123b. The first predetermined length of the first touch lead 123a is greater than the first predetermined length of the second first touch lead 123b. That is, the sum of the lengths of the first lead 121 and the second lead 122 in the first touch lead 123a is greater than the sum of the lengths of the first lead 121 and the second lead 122 in the second first touch lead 124b.

[0224] The first compensation line 125 includes a first compensation line 125a and a second first compensation line 125b. The length of the first compensation line 125a is less than the length of the second compensation line 125b. For example... FIG. 3A As shown, the first compensation line 125a is electrically connected to the first touch lead 123a, and the second compensation line 125b is electrically connected to the second touch lead 123b.

[0225] That is to say, such as FIG. 3AAs shown, the shorter first compensation line 125 (first first compensation line 125a) is electrically connected to the longer first touch lead 123 (first first touch lead 123a) with a first set length value, and the longer first compensation line 125 (first first compensation line 125b) is electrically connected to the shorter first touch lead 123 (first first touch lead 123b) with a first set length value.

[0226] In this way, the shorter first compensation line 125 (first first compensation line 125a) can compensate for the longer first touch lead 123 (first first touch lead 123a) with the first set length value, while the longer first compensation line 125 (first first compensation line 125b) can compensate for the shorter first touch lead 123 (first first touch lead 123b) with the first set length value. This improves the length consistency among multiple first touch leads 123, thereby improving the load consistency among multiple first touch leads 123, improving the touch performance of the touch function layer 100, and thus improving the usability of the touch display panel 200.

[0227] In some embodiments, such as FIG. 3A As shown, along the direction away from the display area AA, the first set length value of the multiple touch leads 120 gradually increases.

[0228] As can be seen from the above, the first set length value of the second touch lead 124 is greater than the first set length value of any one of the first touch leads 123. In this way, the first set length values ​​of the multiple touch leads 120 gradually increase along the direction away from the display area AA, so that the second touch lead 124 is farther away from the display area AA relative to any one of the first touch leads 123.

[0229] Furthermore, as can be seen from the above, if FIG. 3A As shown, the shorter first compensation line 125 (first first compensation line 125a) is electrically connected to the longer first touch lead 123 (first first touch lead 123a), and the longer first compensation line 125 (first first compensation line 125b) is electrically connected to the shorter first touch lead 123 (first first touch lead 123b). In this way, the first set length value of the multiple touch leads 120 gradually increases along the direction away from the display area AA, causing the length of the multiple first compensation lines 125 to gradually decrease along the direction away from the display area AA.

[0230] In some examples, the first set length values of the plurality of touch lead lines 120 gradually increase in a direction away from the display area AA in an arithmetic sequence. That is, the absolute values of the difference between any two adjacent first set length values of the plurality of touch lead lines 120 are equal in the direction away from the display area AA. In other examples, the absolute values of the difference between any two adjacent first set length values of the plurality of touch lead lines 120 can also not be equal in the direction away from the display area AA.

[0231] It can be understood that, by gradually increasing the first set length values of the plurality of touch lead lines 120 in the direction away from the display area AA, the plurality of touch lead lines 120 can avoid interfering with each other when extending, and the wiring convenience of the plurality of touch lead lines 120 can be improved, thereby improving the processing convenience of the touch display panel 200.

[0232] In some embodiments, as shown in FIG. 1A, the first compensation line 125 is electrically connected to the first touch lead line 123. FIG. 3B In some examples, at least part of the orthogonal projection of the first compensation line 125 on the display substrate 210 is located outside the range of the orthogonal projection of the first lead-out line 121 and / or the second lead-out line 122 on the display substrate 210.

[0233] It can be understood that, at least part of the orthogonal projection of the first compensation line 125 on the display substrate 210 is located outside the range of the orthogonal projection of the first lead-out line 121 and / or the second lead-out line 122 on the display substrate 210 of the first touch lead line 123. In addition, at least part of the orthogonal projection of the first compensation line 125 on the display substrate 210 is also located outside the range of the orthogonal projection of the first lead-out line 121 and / or the second lead-out line 122 on the display substrate 210 of the second touch lead line 124.

[0234] In this way, the parasitic capacitance between the first compensation line 125 and the first lead-out line 121 and the second lead-out line 122 can be reduced, thereby improving the capacitance consistency between the plurality of first touch lead lines 123, enabling the plurality of first touch lead lines 123 to realize equal-capacitance wiring, improving the load consistency between the plurality of first touch lead lines 123, and improving the touch performance of the touch function layer 100, thereby improving the use performance of the touch display panel 200.

[0235] FIG. 3C FIG. 1B is a partial structural view of a touch function layer according to another embodiment. FIG. 3B FIG. 1C is a partial structural view of a touch function layer according to yet another embodiment.

[0236] As described above, the first compensation line 125 is electrically connected to the first lead-out line 121 and / or the second lead-out line 122 in the first touch lead line 123. In some examples, as shown in FIG. 1A, the first compensation line 125 is electrically connected to the first touch lead line 123. FIG. 3CAs shown, one end of the first compensation line 125 is electrically connected with the first lead-out line 121 and / or the second lead-out line 122 in the first touch lead line 123, and the other end extends towards the fan-out area BB. Moreover, at least part of the orthographic projection of the first compensation line 125 on the display substrate 210 is located outside the range of the orthographic projection of the first lead-out line 121 and / or the second lead-out line 122 on the display substrate 210.

[0237] In some examples, as shown in FIG. 1A, the first lead-out line 121 and the second lead-out line 122 are electrically connected with each other. FIG. 3C As shown, one end of the first compensation line 125 is electrically connected with the second lead-out line 122 in the first touch lead line 123, and the other end extends away from the fan-out area BB. Moreover, at least part of the orthographic projection of the first compensation line 125 on the display substrate 210 is located outside the range of the orthographic projection of the first lead-out line 121 and / or the second lead-out line 122 on the display substrate 210.

[0238] In some examples, as shown in FIG. 1A, the first lead-out line 121 and the second lead-out line 122 are electrically connected with each other. FIG. 3D As shown, the first lead-out line 121 and the second lead-out line 122 are electrically connected with each other. The first lead-out line 121 and the second lead-out line 122 are electrically connected with each other at the first connection end Q1. The first lead-out line 121 and the second lead-out line 122 are electrically connected with each other at the second connection end Q2.

[0239] FIG. 3D A partial structural diagram of a touch function layer according to yet another embodiment.

[0240] In some embodiments, as shown in FIG. 1A, the second lead-out line 122 and the first lead-out line 121 are electrically connected with each other. FIG. 3D As shown, the second lead-out line 122 and the first lead-out line 121 are electrically connected with each other at the first connection end Q1.

[0241] As can be understood, the second lead-out line 122 and the first lead-out line 121 are electrically connected with each other at the first connection end Q1 in the first touch lead line 123 and at the first connection end Q1 in the second touch lead line 124.

[0242] As shown in FIG. 1A, the first compensation line 125 is electrically connected with the first connection end Q1 in the first touch lead line 123. FIG. 3D As shown, one end of the first compensation line 125 is electrically connected with the first connection end Q1 in the first touch lead line 123, and the other end extends away from the second lead-out line 122 along the extension direction of the edge of the first display area AA1.

[0243] As can be understood, as shown in FIG. 1A, the second lead-out line 122 extends to the junction of the second display area AA2 and the fan-out area BB away from the first lead-out line 121. FIG. 3D As shown, one end of the first compensation line 125 is electrically connected with the first connection end Q1 in the first touch lead line 123, and the other end extends away from the second lead-out line 122. Thus, the end of the first compensation line 125 away from the first connection end Q1 can extend away from the fan-out area BB.

[0244] This configuration, on the one hand, reduces the orthographic projection of the first compensation line 125 on the display substrate 210 and the overlapping area of ​​the first lead-out line 121 and the second lead-out line 122 on the display substrate 210, thereby reducing the parasitic capacitance generated between the first compensation line 125 and the first lead-out line 121 and the second lead-out line 122, improving the capacitance consistency among the multiple first touch leads 123, enabling the multiple first touch leads 123 to achieve equal capacitance wiring, improving the load consistency among the multiple first touch leads 123, improving the touch performance of the touch function layer 100, and thus improving the usability of the touch display panel 200.

[0245] On the other hand, by setting the end of the first compensation line 125 away from the first connection terminal Q1 to extend away from the second lead line 122, the first touch lead line 123 can be evenly distributed in the second display area AA2, reducing the space occupied by the first touch lead line 123 along the first direction X1, improving the regularity of the arrangement of the first touch lead line 123, reducing the risk that the second lead line 122 and the first compensation line 125 of the first touch lead line 123 will be visible to the naked eye, and improving the display performance of the touch display panel 200.

[0246] And, as FIG. 3A As shown, the end of the first compensation line 125 away from the first connection terminal Q1 extends along the edge of the first display area AA1. That is, the extension direction of the first compensation line 125 is parallel to the extension direction of the edge of the first display area AA1.

[0247] This arrangement improves the regularity of the arrangement of multiple first compensation lines 125, reduces the space occupied by multiple first compensation lines 125, and lowers the risk of the first compensation lines 125 being visible to the naked eye. In addition, it can shorten the distance between the first compensation lines 125, thereby reducing the load on the touch lead 120 and improving the reliability of signal transmission.

[0248] In some examples, the orthographic projection of the first compensation line 125 onto the display substrate 210 can be a straight line, a curve, or a broken line, such as a wavy or sawtooth shape.

[0249] In some embodiments, such as FIG. 3A As shown, the ends of the multiple first compensation lines 125 that are away from the first connection terminal Q1 are roughly aligned with the orthographic projections on the display substrate 210.

[0250] As known from the above, the second set length value of the plurality of first touch lead lines 123 (i.e., the sum of the lengths of the first compensation line 125 and the second lead-out line 122 in the first touch lead line 123) is substantially equal. In this way, the end of the plurality of first compensation lines 125 away from the first connection end Q1 has a substantially flush normal projection on the display substrate 210, which can improve the arrangement regularity of the plurality of first compensation lines 125, i.e., improve the arrangement regularity of the plurality of first touch lead lines 123, on the basis of improving the consistency of the lengths of the plurality of first touch lead lines 123 located in the display area AA.

[0251] In some examples, the normal projection of the plurality of first compensation lines 125 on the display substrate 210 is linear or approximately linear, so that when the second set length value of the plurality of first touch lead lines 123 (i.e., the sum of the lengths of the first compensation line 125 and the second lead-out line 122 in the first touch lead line 123) is substantially equal, the end of the plurality of first compensation lines 125 away from the first connection end Q1 has a substantially flush normal projection on the display substrate 210.

[0252] In this way, on the one hand, the occupied space of the plurality of first touch lead lines 123 can be saved, and on the other hand, the arrangement regularity of the plurality of first compensation lines 125 can be improved, which can reduce the risk of the second lead-out line 122 and the first compensation line 125 of the first touch lead line 123 being perceived by the naked eye and improve the display performance of the touch display panel 200.

[0253] As known from the above, in some examples, the sum of the lengths of the second lead-out line 122 and the first compensation line 125 in the first touch lead line 123 is a second set length value. In some embodiments, as shown in FIG. 1B, the length of the second lead-out line 122 in the second touch lead line 124 is substantially equal to the second set length value. That is, the length of the second lead-out line 122 in the second touch lead line 124 is substantially equal to the sum of the lengths of the second lead-out line 122 and the first compensation line 125 in the first touch lead line 123. FIG. 3E

[0254] For example, the absolute value of the difference between the length of the second lead-out line 122 in the second touch lead line 124 and the second set length value can be 0.5 mm, 1.2 mm, 1.8 mm, or 2.2 mm, etc.

[0255] For example, the absolute value of the difference between the length of the second lead-out line 122 in the second touch lead line 124 and the second set length value can be 0.5 mm, 1.2 mm, 1.8 mm, or 2.2 mm, etc.

[0256] ​This configuration improves the consistency between the length of the first touch lead 123 within the display area AA and the length of the second touch lead 124 within the display area AA. In other words, it improves the consistency of the length of multiple touch leads 120 (including the first touch lead 123 and the second touch lead 124) within the display area AA, thereby improving the load consistency among multiple touch leads 120 (including the first touch lead 123 and the second touch lead 124) and thus improving the touch performance of the touch function layer 100.

[0257] FIG. 3E This is a structural diagram of a touch display panel according to some other embodiments.

[0258] As can be seen from the above, in some embodiments, the length of the second lead 122 of the second touch lead 124 is substantially equal to the second set length value. In other embodiments, such as... FIG. 3E As shown, the second touch lead 124 also includes a second compensation line 126. The second compensation line 126 is located in the second display area AA2 and is electrically connected to the first lead 121 and / or the second lead 122 in the second touch lead 124. In the second touch lead 124, the sum of the lengths of the second lead 122 and the second compensation line 126 is substantially equal to a second set length value. That is, the sum of the lengths of the second lead 122 and the second compensation line 126 in the second touch lead 124 is substantially equal to the sum of the lengths of the second lead 122 and the first compensation line 125 in the first touch lead 123.

[0259] For example, in the second touch lead 124, the absolute value of the difference between the sum of the lengths of the second lead 122 and the second compensation line 126 and the second set length value can be in the range of 0mm to 3mm, 0mm to 2mm, or 0mm to 1mm, etc.

[0260] For example, in the second touch lead 124, the absolute value of the difference between the sum of the lengths of the second lead 122 and the second compensation line 126 and the second set length value can be 0.5mm, 1.2mm, 1.8mm or 2.2mm, etc.

[0261] This configuration improves the consistency between the length of the first touch lead 123 within the display area AA and the length of the second touch lead 124 within the display area AA. In other words, it improves the consistency of the length of multiple touch leads 120 (including the first touch lead 123 and the second touch lead 124) within the display area AA, thereby improving the load consistency among multiple touch leads 120 (including the first touch lead 123 and the second touch lead 124) and thus improving the touch performance of the touch function layer 100.

[0262] In some examples, the second compensation line 126 is electrically connected to the first lead 121 in the second touch lead 124. In other examples, the second compensation line 126 is electrically connected to the second lead 122 in the second touch lead 124. In still other examples, the second compensation line 126 is electrically connected to the endpoint (i.e., the first connection terminal Q1) where the first lead 121 and the second lead 122 in the second touch lead 124 are electrically connected, such that the second compensation line 126 can be electrically connected to the first lead 121 and the second lead 122 in the second touch lead 124.

[0263] In some examples, such as FIG. 3E As shown, at least a portion of the orthographic projection of the second compensation line 126 onto the display substrate 210 is located outside the orthographic projection range of the first lead-out line 121 and / or the second lead-out line 122 onto the display substrate 210.

[0264] This reduces the parasitic capacitance between the second compensation line 126 and the first lead-out line 121 and / or the second lead-out line 122, improves the capacitance consistency among multiple touch leads 120 (including the first touch lead-out line 123 and the second touch lead-out line 124), enables equal capacitance wiring among multiple touch leads 120, improves the load consistency among multiple touch leads 120, improves the touch performance of the touch function layer 100, and thus improves the performance of the touch display panel 200.

[0265] As described above, the end of the second lead 122 that is electrically connected to the first lead 121 is the first connection terminal Q1. In some examples, such as... FIG. 3E As shown, in the second touch lead 124, one end of the second compensation line 126 is electrically connected to the first connection terminal Q1, and the other end extends away from the second lead 122 along the extension direction of the edge of the first display area AA1.

[0266] This configuration reduces the orthographic projection of the second compensation line 126 on the display substrate 210 and the overlapping area of ​​the first lead-out line 121 and the second lead-out line 122 on the display substrate 210. This reduces the parasitic capacitance generated between the second compensation line 126 and the first lead-out line 121 and the second lead-out line 122, improves the capacitance consistency among multiple touch leads 120 (including the first touch lead-out line 123 and the second touch lead-out line 124), enables equal capacitance wiring among multiple touch leads 120, improves the load consistency among multiple touch leads 120, improves the touch performance of the touch function layer 100, and thus improves the usability of the touch display panel 200.

[0267] And, the second touch lead line 124 can be evenly distributed in the second display area AA2, the occupied space of the second touch lead line 124 along the first direction X1 is reduced, the arrangement regularity of the second touch lead line 124 is improved, the risk of the second lead-out line 122 and the second compensation line 126 in the second touch lead line 124 being perceived by naked eyes is reduced, and the display performance of the touch display panel 200 is improved.

[0268] In addition, the end of the second compensation line 126 away from the first connection end Q1 extends along the extension direction of the edge of the first display area AA1, that is, the extension direction of the second compensation line 126 is parallel to the extension direction of the edge of the first display area AA1.

[0269] In this way, the arrangement regularity of the plurality of second compensation lines 126 is improved, the occupied space of the plurality of second compensation lines 126 is reduced, the risk of the second compensation line 126 being perceived by naked eyes is reduced, the distance of the second compensation line 126 is shortened, thereby reducing the load of the touch lead line 120 and improving the transmission reliability of the signal.

[0270] In some examples, as shown in FIG. 1, the end of the second compensation line 126 away from the first connection end Q1 is substantially flush with the end of the first compensation line 125 away from the first connection end Q1. FIG. 4A In some examples, as shown in FIG. 1, the end of the second compensation line 126 away from the first connection end Q1 is substantially flush with the end of the first compensation line 125 away from the first connection end Q1.

[0271] In some examples, the end of the second compensation line 126 away from the first connection end Q1 is substantially flush with the end of the first compensation line 125 away from the first connection end Q1.

[0272] In this way, on the one hand, the occupied space of the plurality of second touch lead lines 124 is saved, and on the other hand, the arrangement regularity of the plurality of second compensation lines 126 is improved, that is, the arrangement regularity of the plurality of touch lead lines 120 is improved, the risk of the part of the touch lead line 120 (including the first touch lead line 123 and the second touch lead line 124) located in the display area AA being perceived by naked eyes is reduced, and the display performance of the touch display panel 200 is improved.

[0273] FIG. 4A A structural diagram of a touch display panel according to still another embodiment.

[0274] In some examples, as shown in FIG. 1, the end of the second compensation line 126 away from the first connection end Q1 is substantially flush with the end of the first compensation line 125 away from the first connection end Q1. FIG. 4AAs shown, the touch function layer 100 includes a first conductive layer 130, a second conductive layer 140, and an insulating layer 150. The first conductive layer 130 and the second conductive layer 140 are stacked. The insulating layer 150 is located between the first conductive layer 130 and the second conductive layer 140.

[0275] Understandably, the first conductive layer 130 and the second conductive layer 140 are used to provide the touch lead 120 or the touch electrode 110, etc. The insulating layer 150 is located between the first conductive layer 130 and the second conductive layer 140, and serves to provide electrical isolation.

[0276] In some examples, such as FIG. 4A As shown, the first conductive layer 130 and the second conductive layer 140 are stacked on the surface of the encapsulation layer 214 of the display substrate 210 away from the substrate 211. For example, the structure in which the first conductive layer 130 and the second conductive layer 140 are stacked on the surface of the encapsulation layer 214 away from the substrate 211 can be called a flexible multilayer structure (FMLOC).

[0277] In other examples, the display substrate 210 also includes a buffer layer 215. FIG. 1B Not shown in the image, see [link / reference]. FIG. 4A The buffer layer 215 is located on the surface of the encapsulation layer 214 away from the substrate 211, and the first conductive layer 130 and the second conductive layer 140 are stacked on the side of the buffer layer 215 away from the substrate 211. This arrangement can protect the encapsulation layer 214 and prevent damage to the encapsulation layer 214 during the formation of the touch function layer 100.

[0278] The first conductive layer 130 and the second conductive layer 140 are stacked, as in some examples, such as FIG. 4A As shown, the first conductive layer 130 is located away from the substrate 211 relative to the second conductive layer 140. In other examples, the first conductive layer 130 is located closer to the substrate 211 relative to the second conductive layer 140.

[0279] As described above, the touch lead 120 includes a first lead 121 and a second lead 122. The first lead 121 also includes a first compensation line 125. In some examples, such as... FIG. 4A As shown, the first lead 121 and the second lead 122 are located in the first conductive layer 130, and the first compensation line 125 is located in the second conductive layer 140.

[0280] Understandably, such as FIG. 4BAs shown, the first lead-out wire 121 and the second lead-out wire 122 are arranged on the first conductive layer 130, and the first compensation wire 125 is arranged on the second conductive layer 140, so that the first lead-out wire 121 and the second lead-out wire 122 can avoid mutual interference with the first compensation wire 125 when wiring, and the wiring convenience of the first lead-out wire 121, the second lead-out wire 122 and the first compensation wire 125 is improved, the process is simple, and no additional mask is needed for repeated etching, so that the production efficiency of the touch display panel 200 is improved, and the production cost of the touch display panel 200 is reduced.

[0281] In addition, the first lead-out wire 121 and the second lead-out wire 122 are arranged on the first conductive layer 130, so that the wiring convenience of the first lead-out wire 121 and the second lead-out wire 122 is improved, and thus the production efficiency of the touch display panel 200 is improved, and the cost of the touch display panel 200 is reduced.

[0282] As described above, the first compensation wire 125 is electrically connected with the first lead-out wire 121 and / or the second lead-out wire 122 in the first touch lead wire 123. In some examples, a fourth via hole (not shown in the figure) is formed on the insulating layer 150, and the first compensation wire 125 is electrically connected with the first lead-out wire 121 and / or the second lead-out wire 122 in the first touch lead wire 123 through the fourth via hole, which is simple to operate and easy to implement, and thus the production efficiency of the touch display panel 200 is improved, and the production cost of the touch display panel 200 is reduced.

[0283] As described above, in some examples, the second touch lead wire 124 includes a second compensation wire 126. For example, the second compensation wire 126 is located on the second conductive layer 140, and the second compensation wire 126 is located on a different conductive layer from the first lead-out wire 121 and the second lead-out wire 122, so that the second compensation wire 126 can avoid mutual interference with the first lead-out wire 121 and the second lead-out wire 122 when wiring, and thus the wiring convenience of the first lead-out wire 121, the second lead-out wire 122 and the second compensation wire 126 is improved, and thus the processing convenience of the touch display panel 200 is improved.

[0284] FIG. 4A A structural diagram of a touch display panel according to still another embodiment.

[0285] As described above, in some embodiments, as shown in FIG. 1, the first lead-out wire 121 and the second lead-out wire 122 are located on the first conductive layer 130, and the first compensation wire 125 is located on the second conductive layer 140. FIG. 4B In some other embodiments, the first lead-out wire 121 and the second lead-out wire 122 are located on the first conductive layer 130. As shown in FIG. 2, the first lead-out wire 121 and the second lead-out wire 122 are located on the first conductive layer 130, and the first compensation wire 125 is located on the second conductive layer 140. FIG. 4BAs shown, the first compensation line 125 includes at least two first sub-compensation lines 1251 and at least one first connecting part 1251. The first sub-compensation line 1251 is located on the first conductive layer 130. The first connecting part 1251 is located on the second conductive layer 140.

[0286] It can be understood that the lengths between the at least two first sub-compensation lines 1251 can be the same or different. The intervals between the at least two first sub-compensation lines 1251 can be the same or different. It can be understood that when the number of the first connecting part 1251 is multiple, the multiple first connecting parts 1251 are all located on the second conductive layer 140.

[0287] It can be understood that, as shown, FIG. 4C The first connecting part 1252 can be electrically connected with the adjacent two first sub-compensation lines 1251 through the first via (not shown in the figure) on the insulating layer 150, so that the electrical signal can be transmitted between the multiple first sub-compensation lines 1251 through the first connecting part 1252.

[0288] FIG. 4C A partial structure diagram of the touch function layer according to still another embodiment.

[0289] In some examples, as shown, FIG. 4C The first connecting part 1252 crosses the first lead-out line 121, that is, the orthographic projection of the first connecting part 1252 on the display substrate 210 intersects with the orthographic projection of the first lead-out line 121 on the display substrate 210.

[0290] For example, as shown, FIG. 3E When the touch function layer 100 includes multiple first compensation lines 125, the first connecting parts 1252 in different first compensation lines 125 can cross the same first lead-out line 121.

[0291] It can be understood that by setting the first connecting part 1252 on the second conductive layer 140, the first lead-out line 121, the second lead-out line 122 and the multiple first sub-compensation lines 1251 on the first conductive layer 130, and the first connecting part 1252 capable of crossing the first lead-out line 121 and being electrically connected with the adjacent two first sub-compensation lines 1251, the mutual interference between the first compensation line 125 (including the first sub-compensation line 1251 and the first connecting part 1252) and the first lead-out line 122 and the second lead-out line 124 in the wiring process is avoided, the wiring flexibility of the first lead-out line 121, the second lead-out line 122 and the first compensation line 125 is improved, and different use requirements are met. Moreover, the process is simple, no additional mask (English name: Mask) is needed for repeated etching, the production efficiency of the touch display panel 200 is improved, and the production cost of the touch display panel 200 is reduced.

[0292] As shown in FIG. 1, in some examples, the second touch lead 124 includes a second compensation line 126. In some examples, the second compensation line 126 includes a plurality of second sub-compensation lines and a second connecting portion. The second sub-compensation lines are located in the first conductive layer 130, and the second connecting portion is located in the first conductive layer and crosses the first lead-out line 121 and is electrically connected to two adjacent second sub-compensation lines through a third via hole (not shown in the figure) in the insulating layer 150. FIG. 4A In this way, the second compensation line 126 (including the second sub-compensation lines and the second connecting portion) avoids interfering with the first lead-out line 122 and the second lead-out line 124 when routing, improves the routing flexibility of the first lead-out line 121, the second lead-out line 122, and the second compensation line 126, and meets different use requirements.

[0293] In some examples, as shown in FIG. 1 and FIG. 2, the first conductive layer 130 is away from the substrate 211 relative to the second conductive layer 140. In this way, the first compensation line 125 (or the plurality of first sub-compensation lines 1251 in the first compensation line 125), the first lead-out line 121, and the second lead-out line 122 are all located in the first conductive layer 130, which can increase the distance between the plurality of first compensation lines 125 (or the plurality of first sub-compensation lines 1251 in the first compensation line 125), the first lead-out line 121, and the second lead-out line 122 and the conductive film layer 216 (for example, the cathode layer CTD) of the display substrate 210, reduce the parasitic capacitance formed between the plurality of first compensation lines 125 (or the plurality of first sub-compensation lines 1251 in the first compensation line 125), the first lead-out line 121, and the second lead-out line 122 and the conductive film layer 216 of the display substrate 210, thereby reducing the load of the touch lead 120, improving the touch performance of the touch function layer 100, and improving the performance of the touch display panel 200.

[0294] FIG. 4B As shown in FIG. 1, in some examples, the plurality of touch electrodes 110 includes a plurality of first touch electrodes 111 and a plurality of second touch electrodes 112. The plurality of first touch electrodes 111 are arranged at intervals along a first direction X1 and each extends along a second direction y1 intersecting the first direction x1. The plurality of second touch electrodes 112 are arranged at intervals along the second direction Y1 and each extends along the first direction X1. The plurality of second touch electrodes 112 and the plurality of first touch electrodes 111 intersect each other and are insulated from each other to form a plurality of capacitive units 113 at each intersection position. The smallest closed figure region where the plurality of capacitive units 113 are located as a whole is a first display area AA1. FIG. 1B

[0295] FIG. 1B

[0296] ​​​​For example, the second touch electrode 112 includes a plurality of spaced-apart touch sub-electrodes 1121 and a plurality of bridging portions 1122.

[0297] In some embodiments, such as FIG. 1E As shown, a plurality of first touch electrodes 111 are located in the first conductive layer 130. A plurality of touch sub-electrodes 1121 are located in the first conductive layer 130. A plurality of bridging portions 1122 are located in the second conductive layer 140. The bridging portions 1122 cross the first touch electrodes 111 and are electrically connected to two adjacent touch sub-electrodes 1121 through a second via (not shown) on the insulating layer 150.

[0298] Understandably, the bridging portion 1122 spans across the first touch electrode 111, meaning that the orthographic projection of the bridging portion 1122 on the display substrate 210 intersects with the orthographic projection of the first touch electrode 111 on the display substrate 210. For example, as... FIG. 1B As shown, the orthographic projection of the bridging portion 1122 on the display substrate 210 intersects with the orthographic projection of the connection structure 1112 of the first touch electrode 111 on the display substrate 210.

[0299] This configuration allows electrical signals to be transmitted between multiple touch sub-electrodes 1121 via the bridging portion 1122. Furthermore, the bridging portion 1122 is located in the second conductive layer 140, and the touch sub-electrodes 1121 of the first touch electrode 111 (including the touch structure 1111 and the connection structure 1112) and the second touch electrode 112 are both located in the first conductive layer 130. This avoids mutual interference between the connection 1112 of the first touch electrode 111 and the bridging portion 1122 of the second touch electrode 112 when the first touch electrode 111 and the second touch electrode 112 extend, thereby improving the reliability of the touch function layer 100.

[0300] In some examples, such as FIG. 1A As shown, the first conductive layer 130 is farther from the substrate 211 than the second conductive layer 140. This arrangement, with the first touch electrode 111 (including the touch structure 1111 and the connection structure 1112) and multiple touch sub-electrodes 1121 of the second touch electrode 112 located in the first conductive layer 130, increases the distance between the multiple touch sub-electrodes 1121 of the first and second touch electrodes 111 and the conductive film layer 216 (e.g., cathode layer CTD) of the display substrate 210. This reduces the parasitic capacitance formed between the multiple touch sub-electrodes 1121 of the first and second touch electrodes 111 and the conductive film layer 216 (e.g., cathode layer CTD) of the display substrate 210, improving the touch performance of the touch functional layer 100 and thus enhancing the performance of the touch display panel 200.

[0301] As can be seen from the above, if FIG. 1B andFIG. 5A As shown in FIG. 2A, the display substrate 210 includes a substrate 211. A plurality of sub-pixels 220 are located on one side of the substrate 211 and in the display area AA.

[0302] FIG. 5A FIG. 2B is a diagram of the projection position relationship between the touch lead and the sub-pixel according to some embodiments. FIG. 5A FIG. 2C is a diagram of the projection position relationship between the touch lead and the sub-pixel according to some other embodiments.

[0303] In some embodiments, as shown in FIG. 2A, FIG. 5B and FIG. 5A As shown in FIG. 2A, the orthographic projection of the at least one touch lead 120 on the substrate 211 avoids the orthographic projection of the light-emitting area of the sub-pixel 220 on the substrate 211.

[0304] It can be understood that the sub-pixel 220 emits light outward through the light-emitting area. The orthographic projection of the at least one touch lead 120 on the substrate 211 avoids the orthographic projection of the light-emitting area of the sub-pixel 220 on the substrate 211, that is, the orthographic projection of the at least one touch lead 120 on the substrate 211 does not overlap with the orthographic projection of the light-emitting area of the sub-pixel 220 on the substrate 211, which reduces the obstruction of the light-emitting area of the sub-pixel 220 in the second display area AA2 caused by the touch lead 120 arranged in the second display area AA2, thereby reducing the influence of the touch lead 120 on the image information displayed in the second display area AA2, and improving the display reliability of the touch display panel 200.

[0305] In some examples, as shown in FIG. 2A, FIG. 5B The orthographic projection of the at least one touch lead 120 on the substrate 211 is a curve, for example, in a wavy shape or approximately in a wavy shape, so that the orthographic projection of the at least one touch lead 120 on the substrate 211 can avoid the orthographic projection of the light-emitting area of the sub-pixel 220 on the substrate 211.

[0306] In some other examples, as shown in FIG. 2C, FIG. 3E A through hole is formed on the at least one touch lead 120, and the position of the through hole corresponds to the position of the light-emitting area of the sub-pixel 220, so that the orthographic projection of the at least one touch lead 120 on the substrate 211 can avoid the orthographic projection of the light-emitting area of the sub-pixel 220 on the substrate 211.

[0307] In some embodiments, as shown in FIG. 2A, FIG. 3EAs shown, the arrangement direction of the display area AA and the fan-out area BB is a third direction Y2. A direction parallel to the display substrate 210 and intersecting the third direction Y2 is a fourth direction X2. In some examples, the third direction Y2 is a vertical direction, and the fourth direction X2 is a horizontal direction. The third direction Y2 is perpendicular to the fourth direction X2. For example, the third direction Y2 is parallel to the second direction Y1, and the fourth direction X2 is parallel to the first direction X1.

[0308] As shown, at least part of the plurality of touch control leads 120 is distributed on both sides of the first display area AA1 along the fourth direction X2. That is, at least part of the plurality of touch control leads 120 can extend to the fan-out area BB along the second display area AA2 located on both sides of the fourth direction X2, so as to reduce the width of the frame of the touch display panel 200 on both sides of the fourth direction X2, improve the uniformity of the frame width of the touch display panel 200 on both sides of the fourth direction X2, and thus improve the visual effect of the touch display panel 200. FIG. 6

[0309] FIG. 6 A structural diagram of a touch display device according to some embodiments.

[0310] On the other hand, as shown in ​ The touch display device 300 includes the touch display panel 200 as described above, and thus has all the beneficial effects described above, which will not be repeated here.

[0311] For example, the touch display device 300 includes a flexible circuit board, a driving IC, and a touch IC, etc. As described above, the flexible circuit board is bound to the connection pins in the connection area 230, the driving IC is mounted on the flexible circuit board by using the COF process, and the touch IC is mounted on the flexible circuit board by using the COF process. Alternatively, the touch IC can be mounted on the substrate 211 of the touch display substrate 210 located in the binding area 240 by using the COP process, and electrically connected to the connection pins in the connection area 230.

[0312] It can be understood that the touch display device 300 is a product with image display function. For example, the touch display device 300 can be used to display static images such as pictures or photos. The touch display device 300 can also be used to display dynamic images such as videos or game screens.

[0313] ​In some examples, the touch display device 300 can be a notebook computer, a mobile phone, a wireless device, a personal data assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a television monitor, a flat panel display, a computer monitor, an automobile display (e.g., a speedometer display, etc.), a navigation instrument, a cockpit controller and / or display, a display of a camera view (e.g., a display of a rear view camera in a vehicle), an electronic photograph, an electronic billboard or sign, a projector, a packaging and aesthetic structure (e.g., a display of an image for a piece of jewelry), etc.

[0314] The above description is merely that of the specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. It is intended that any changes or modifications within the scope of the present disclosure are covered by the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be construed on the basis of the claims.

Claims

1. A touch display panel, comprising a display area and a fan-out area located at one side of the display area; the display area comprises a first display area and a second display area located around the first display area; the first display area and the second display area are both used for displaying image information; the touch display panel comprises: a display substrate having a display side; a touch function layer located at the display side of the display substrate; the touch function layer comprises a plurality of touch electrodes and a plurality of touch leads; the plurality of touch electrodes are located in the first display area; the plurality of touch leads are electrically connected with the plurality of touch electrodes, and the plurality of touch leads extend to the fan-out area through the second display area; wherein the display substrate comprises a substrate and a plurality of sub-pixels, the plurality of sub-pixels are located at one side of the substrate and in the display area; the orthogonal projection of at least one touch lead on the substrate avoids the orthogonal projection of the light-emitting area of a sub-pixel on the substrate. 2.The touch display panel of claim 1, wherein, In the plurality of touch leads, the absolute value of the length difference of the parts of two touch leads in the display area ranges from 0mm to 4mm. 3.The touch display panel of claim 2, wherein, In the plurality of touch leads, the lengths of the parts of at least two touch leads in the display area are substantially equal. 4.The touch display panel of claim 1, wherein, The touch lead comprises: a first lead-out line, one end of the first lead-out line is electrically connected with a touch electrode located in the first display area, and the other end of the first lead-out line extends to the second display area; a second lead-out line, one end of the second lead-out line is electrically connected with the end of the first lead-out line away from the touch electrode, and the other end of the second lead-out line extends to the junction of the second display area and the fan-out area; and the second lead-out line extends along the extension direction of the edge of the first display area; wherein in any one of the touch leads, the sum of the lengths of the first lead-out line and the second lead-out line is a first set length value; in the plurality of touch leads, the touch lead with the longest first set length value is a second touch lead, and the remaining touch leads are first touch leads; the first touch lead further comprises: a first compensation line located in the second display area and electrically connected with the first lead-out line and / or the second lead-out line in the first touch lead. 5.The touch display panel of claim 4, wherein, In the first touch lead, the sum of the lengths of the second lead-out line and the first compensation line is a second set length value; the absolute value of the difference of the second set length values of two first touch leads ranges from 0mm to 4mm. 6.The touch display panel of claim 5, wherein, The second set length values of at least two first touch leads are substantially equal. 7.The touch display panel of any one of claims 4-6, wherein, The first touch lead comprises a first first touch lead and a second first touch lead, the first set length value of the first first touch lead is greater than the first set length value of the second first touch lead; the first compensation line comprises a first first compensation line and a second first compensation line, the length of the first first compensation line is less than the length of the second first compensation line; the first first compensation line is electrically connected with the first first touch lead, and the second first compensation line is electrically connected with the second first touch lead. 8.The touch display panel of any one of claims 4-6, wherein, The first set length value of the plurality of touch control leads gradually increases in a direction away from the display area. 9.The touch display panel of any one of claims 4-6, wherein, At least part of the orthogonal projection of the first compensation line on the display substrate is located outside the range of the orthogonal projection of the first lead-out line and / or the second lead-out line on the display substrate.

10. The touch display panel of any one of claims 4-6, wherein, One end of the second lead-out line is electrically connected to the first connection end; in the first touch control lead, one end of the first compensation line is electrically connected to the first connection end, and the other end extends in the extension direction of the edge of the first display area and away from the second lead-out line. 11.The touch display panel of claim 10, wherein, The orthogonal projection of one end of the plurality of first compensation lines away from the first connection end on the display substrate is substantially flush. 12.The touch display panel of any one of claims 4-6 or 11, wherein, The touch control function layer comprises: a first conductive layer and a second conductive layer arranged in layers; and an insulating layer located between the first conductive layer and the second conductive layer; The first lead-out line and the second lead-out line are located in the first conductive layer, and the first compensation line is located in the second conductive layer.

13. The touch display panel of any one of claims 4-6, 11, wherein, The touch control function layer comprises: a first conductive layer and a second conductive layer arranged in layers; and an insulating layer located between the first conductive layer and the second conductive layer; The first lead-out line and the second lead-out line are located in the first conductive layer. The first compensation line comprises: at least two first sub-compensation lines arranged at intervals and located in the first conductive layer; at least one first connection part located in the second conductive layer; the first connection part crosses the first lead-out line and is electrically connected to two adjacent first sub-compensation lines through first vias on the insulating layer. 14.The touch display panel of claim 13, wherein, The plurality of touch electrodes comprises: a plurality of first touch electrodes arranged at intervals in a first direction and extending in a second direction intersecting the first direction; the plurality of first touch electrodes are located in the first conductive layer; a plurality of second touch electrodes arranged at intervals in the second direction and extending in the first direction; The plurality of second touch electrodes and the plurality of first touch electrodes intersect each other and are insulated from each other to form a plurality of capacitive units at each intersection position; the smallest closed figure area where the plurality of capacitive units are located as a whole is the first display area. The second touch control lead comprises: a plurality of touch sub-electrodes arranged at intervals and located in the first conductive layer; a plurality of bridge parts located in the second conductive layer; the bridge parts cross the first touch electrodes and are electrically connected to two adjacent touch sub-electrodes through second vias on the insulating layer. 15.The touch display panel of claim 5 or 6, wherein, The length of the second lead-out line in the second touch control lead is substantially equal to the second set length value. Or, The second touch control lead further comprises: a second compensation line located in the second display area and electrically connected to the first lead-out line and / or the second lead-out line in the second touch control lead; The sum of the lengths of the second lead-out line and the second compensation line in the second touch control lead is substantially equal to the second set length value.

16. The touch display panel of any one of claims 1-6, 11, wherein, The arrangement direction of the display area and the fan-out area is a third direction; a direction parallel to the display substrate and intersecting the third direction is a fourth direction; At least part of the plurality of touch lead lines is distributed on both sides of the first display area along the fourth direction. 17.A touch display device, comprising: The touch display panel according to any one of claims 1-16.

Images