Driving substrate and display device

Abstract

The utility model provides a driving substrate and a display device, and relates to the technical field of display, the driving substrate comprises a display area and a first fan-out area, and the first fan-out area is located on one side of the display area; the driving substrate comprises a plurality of touch driving signal lines and a plurality of source driving signal lines, and the plurality of touch driving signal lines and the plurality of source driving signal lines extend from the display area to the first fan-out area; the first fan-out area comprises a first area, a second area and a third area located between the first area and the second area; wherein the plurality of touch driving signal lines extend from the display area to the third area, a part of the source driving signal lines extend from the display area to the first area, and a part of the source driving signal lines extend from the display area to the second area. According to the driving substrate, the problem that a sunken driving chip cannot be applied to a touch and display integrated display device in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a driving substrate and a display device. BACKGROUND

[0002] With the rapid development of display technology, narrow frame display devices are favored by people due to their high aesthetic degree. Among them, the design of a sunken driving chip combined with the design of the peripheral area of the driving substrate can effectively reduce the lower frame of the display device.

[0003] For a display product of the TDDI (Touch and Display Driver Integration) type, since the source driving signal lines and the touch driving signal lines are arranged in the driving substrate, the switching units electrically connected to the source driving signal lines and the switching units electrically connected to the touch driving signal lines are arranged in the peripheral area of the driving substrate, so as to facilitate the electrical detection of the source driving signal lines and the touch driving signal lines by the switching units. At this time, there is a problem of insufficient design space in the lower frame area, which is not conducive to the design of narrow frame display products. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a driving substrate and a display device. The touch driving signal lines extending from the display area are arranged in the third area (middle area) of the first fan-out area, which facilitates the subsequent arrangement of the touch switching units below the third area and the electrical connection with the touch driving signal lines, and reasonably utilizes the design space.

[0005] Embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, embodiments of the present application provide a driving substrate, comprising: a display area and a first fan-out area, the first fan-out area being located on one side of the display area;

[0007] The driving substrate comprises a plurality of touch driving signal lines and a plurality of source driving signal lines, the plurality of touch driving signal lines and the plurality of source driving signal lines extending from the display area to the first fan-out area;

[0008] The first fan-out area comprises a first area, a second area, and a third area located between the first area and the second area; wherein the plurality of touch driving signal lines extend from the display area to the third area, part of the source driving signal lines extend from the display area to the first area, and part of the source driving signal lines extend from the display area to the second area.

[0009] In some embodiments of the driving substrate, the driving substrate further comprises a second fan-out area, the second fan-out area being located between the first fan-out area and the display area;

[0010] The plurality of touch driving signal lines are located in the second fan-out area, and the plurality of source driving signal lines are located in the second fan-out area. The orthographic projection of the plurality of touch driving signal lines on the substrate of the driving substrate and the orthographic projection of the plurality of source driving signal lines on the substrate of the driving substrate overlap. The plurality of touch driving signal lines are located in the first fan-out area, and the plurality of source driving signal lines are located in the first fan-out area. The orthographic projection of the plurality of touch driving signal lines on the substrate of the driving substrate and the orthographic projection of the plurality of source driving signal lines on the substrate of the driving substrate do not overlap.

[0011] In some embodiments, the driving substrate further comprises a binding area, the binding area is located on a side of the first fan-out area away from the second fan-out area.

[0012] The binding area comprises a fourth area, a fifth area, and a sixth area located between the fourth area and the fifth area. The fourth area and the fifth area each comprise a plurality of rows of display switch units. The sixth area comprises at least one row of touch switch units. The minimum distance between the touch switch units and the display area is less than the minimum distance between the display switch units and the display area.

[0013] In some embodiments, the fourth area and the fifth area further comprise a plurality of rows of first output terminals, the plurality of rows of first output terminals are located on a side of the display switch unit close to the display area, and the first output terminal is electrically connected with the source driving signal line.

[0014] The sixth area further comprises at least one row of second output terminals, the second output terminals are located on a side of the touch switch unit close to the display area, and the second output terminals are electrically connected with the touch driving signal line.

[0015] In some embodiments, in the fourth area and the fifth area, the display switch units respectively comprise first display switch units, second display switch units and third display switch units.

[0016] The fourth area and the fifth area further each comprise a first switch signal line, a second switch signal line, a third switch signal line, a first display signal line, a second display signal line and a third display signal line extending along a first direction, and the first direction intersects with the extension direction of the source driving signal line.

[0017] The first display switch unit is electrically connected with the first switch signal line, the first display signal line and the source driving signal line respectively. The second display switch unit is electrically connected with the second switch signal line, the second display signal line and the source driving signal line respectively. The third display switch unit is electrically connected with the third switch signal line, the third display signal line and the source driving signal line respectively.

[0018] In some embodiments, one of the first display switch unit, the second display switch unit and the third display switch unit is electrically connected with the touch switch unit to a switch signal line.

[0019] In some embodiments, the switch signal line electrically connected with the touch switch unit extends from the sixth area to the fourth area and the fifth area.

[0020] In some embodiments, the binding area further comprises a common signal line, the common signal line is located on a side of the first switch signal line, the second switch signal line, the third switch signal line, the first display signal line, the second display signal line and the third display signal line away from the display area.

[0021] The common signal line extends from the sixth area to the fourth area and the fifth area; the touch switch unit is further electrically connected with the common signal line and the touch driving signal line respectively.

[0022] In some embodiments, the binding area further comprises at least one row of input terminals, the input terminals are located on a side of the output terminals away from the display area, the output terminals comprise the first output terminal and the second output terminal.

[0023] The fourth area and the fifth area each comprise an edge region and a middle region, the edge region is located on a side of the middle region away from the sixth area, wherein a minimum distance between the first output terminal and the input terminal in the middle region is greater than a minimum distance between the first output terminal and the input terminal in the edge region.

[0024] In some embodiments, a planar size of at least part of the input terminals in the edge region is smaller than a planar size of the input terminals in the middle region.

[0025] In some embodiments, in the sixth area, a minimum distance between the second output terminal and the input terminal is greater than a minimum distance between the first output terminal and the input terminal in the middle region.

[0026] In some embodiments, at least one of the first switch signal line, the second switch signal line, the third switch signal line, the first display signal line, the second display signal line, the third display signal line and the common signal line comprises a stepped line segment.

[0027] In some embodiments, the driving substrate comprises:

[0028] a substrate;

[0029] a gate layer located on one side of the substrate;

[0030] and a source-drain conductive layer located on the side of the gate layer away from the substrate, the gate layer and the source-drain conductive layer being insulatively arranged;

[0031] The source drive signal line, the common signal line, the first switch signal line, the second switch signal line, the third switch signal line, the first display signal line, the second display signal line, and the third display signal line are all arranged on the gate layer, and the touch drive signal line is arranged on the source-drain conductive layer.

[0032] In some embodiments, the driving substrate further comprises a plurality of first connection lines, second connection lines, third connection lines, and fourth connection lines.

[0033] The first connection lines are used to connect the display switch unit and the source drive signal line, and the second connection lines are used to connect the display switch unit and a display signal line; the display signal line comprises at least one of the first display signal line, the second display signal line, and the third display signal line.

[0034] The third connection lines are used to connect the touch switch unit and the touch drive signal line, and the fourth connection lines are used to connect the touch switch unit and the common signal line.

[0035] The first connection lines, the second connection lines, the third connection lines, and the fourth connection lines are all arranged on the source-drain conductive layer.

[0036] In a second aspect, embodiments of the present application provide a display device, comprising the driving substrate according to any one of the first aspect, and further comprising a driving chip, wherein the driving chip is a touch and display integrated driving chip.

[0037] Embodiments of the present application provide a driving substrate and a display device, the driving substrate comprising a display area and a first fan-out area, the first fan-out area being located on one side of the display area; the driving substrate comprising a plurality of touch drive signal lines and a plurality of source drive signal lines, the plurality of touch drive signal lines and the plurality of source drive signal lines all extending from the display area to the first fan-out area; the first fan-out area comprising a first area, a second area, and a third area located between the first area and the second area; wherein the plurality of touch drive signal lines extend from the display area to the third area, part of the source drive signal lines extend from the display area to the first area, and part of the source drive signal lines extend from the display area to the second area.

[0038] The driving substrate provided in the embodiments of this application includes a first fan-out area comprising a first area, a second area, and a third area located between the first area and the second area; the touch driving signal line is disposed in the middle area of ​​the first fan-out area (i.e., the third area), and the source driving signal line is disposed in the two side areas (the first area and the second area), so that the touch switch unit can be disposed below the third area and electrically connected to the touch driving signal line.

[0039] Compared to related technologies where both the touch drive signal line and the source drive signal line are located in the first and second zones, moving the touch drive signal line to the third zone solves the problem of where there is nowhere to place the subsequent touch switch unit below the first and second zones in related technologies, while also ensuring the narrow bezel design of the display device.

[0040] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A top view of the driving substrate in the related art provided for the embodiments of this application;

[0043] Figure 2 A schematic diagram showing the arrangement of bonding terminals of a recessed driver chip in a driver substrate, provided for an embodiment of this application;

[0044] Figure 3 A schematic diagram of the arrangement of switching units on a driving substrate in a related art, provided for an embodiment of this application;

[0045] Figure 4 A top view of a driving substrate provided for an embodiment of this application;

[0046] Figure 5 for Figure 4 The diagram shows the region division markings of the drive substrate in the fan-out area and bonding area.

[0047] Figure 6 for Figure 4 A magnified view of a portion of the driving substrate in the circled area shown;

[0048] Figure 7 For Figure 4 A partial enlarged view of the driving substrate shown in the elliptical mark area. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0050] Unless otherwise required by context, the term "comprises" in the specification and claims is to be construed as an open, inclusive meaning, i.e. "comprises, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" are intended to mean that the particular feature, structure, material or characteristic being described in connection with such embodiment or example includes in at least one embodiment or example of the present application. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics described can be included in any suitable way in one or more embodiments or examples.

[0051] In the embodiments of the present application, the same items or similar items with basically the same functions and effects are partially referred to as "first", "second", etc. only for the purpose of clearly describing the technical solutions of the embodiments of the present application, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features.

[0052] The features of "parallel", "vertical" and "same" used in the embodiments of the present application include the strictly "parallel", "vertical", "same" and the "approximately parallel", "approximately vertical", "approximately same" with certain errors, which are considered to be within the acceptable deviation range for a specific value determined by those of ordinary skill in the art and related to the measurement of the specific value (for example, the limitation of the measurement system). For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of the value. "At least one" means one or more, and "multiple" means at least two.

[0053] The "same layer" in the embodiments of the present application refers to the relationship between a plurality of film layers formed by the same material after the same step (for example, one patterning process). The "same layer" here does not always mean that the thicknesses of the plurality of film layers are the same or the heights of the plurality of film layers in the cross-sectional view are the same. The polygons in the present specification are not strictly in the sense, but can be approximate triangles, parallelograms, trapezoids, pentagons, or hexagons, etc., and there can be some small deformations caused by tolerances.

[0054] In the present specification, "electrically connected" and "coupled" include the case where the constituent elements are connected together through an element having some electrical effect. The element having some electrical effect is not particularly limited as long as it can perform the transmission and reception of electrical signals between the connected constituent elements. Examples of the element having some electrical effect include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, other elements having various functions, and the like.

[0055] With the rapid development of display technology, narrow-frame display devices are favored by people due to their high aesthetic degree. Among them, the design of the sunken driving chip in combination with the design of the driving substrate peripheral area can effectively reduce the lower frame of the display device.

[0056] For a display product of the TDDI (Touch and Display Driver Integration) type, since the source driving signal line and the touch driving signal line are provided in the driving substrate at the same time, the switching unit electrically connected with the source driving signal line and the switching unit electrically connected with the touch driving signal line are provided in the peripheral area of the driving substrate, so as to facilitate the electrical detection of the source driving signal line and the touch driving signal line through the switching unit later. At this time, there is a problem of insufficient design space in the lower frame area, which is not conducive to the design of the narrow-frame display product.

[0057] Figure 1 A top view of the TDDI type driving substrate in the related art at the lower frame position is provided, wherein in the fanout area, the touch driving signal line TX all overlaps with the orthographic projection of the source driving signal line Source on the substrate of the driving substrate. In this way, when the touch driving signal line TX and the source driving signal line Source extend to the binding area BD, the number of binding terminals (such as input Pin and output Pin) in the binding area BD increases dramatically, and in addition, the number of switching units in the binding area for electrical detection later also increases dramatically. Figure 2 As shown, for the sunken driving chip, the distance between the input Pin and the output Pin in the sunken area is significantly reduced, and all the switching units cannot be accommodated in this area.

[0058] For example, as shown in FIG. 1, the driving chip 10 is designed to be sunken in the driving substrate 20, and the driving substrate 20 is designed to have a peripheral area 21 around the driving chip 10. Figure 3As shown, compared to non-TDDI type driver boards, TDDI type driver boards require the addition of a touch switch unit (Switch TX), a switch signal line (SW) electrically connected to the touch switch unit (Switch TX), and a common signal line (VCOM) in the area between the input pin and the output pin. Thus, in related technologies, such as... Figure 3 The vertical width D of the area containing the switch units shown (including display switch units Switch R, Switch G, Switch B and touch switch unit Switch TX) exceeds the width shown in the figure. Figure 2 The spacing between the input pin and the output pin in the recessed area shown is such that recessed driver chips cannot be used in TDDI type display devices.

[0059] It should be noted that, Figure 2 This is a schematic diagram showing the arrangement of bonding terminals in the driver substrate that are electrically connected to the recessed driver chip. Figure 2 The rectangle in the image represents the outer contour of the area covered after the under-mount driver chip is bonded to the driver substrate. The under-mount driver chip is called "under-mount" because... Figure 2 The output pins at the recessed area marked in the center are arranged downwards, making full use of the horizontal space in the lower bezel area to arrange the bonding terminals, thereby reducing the vertical dimension of the lower bezel. Here, "vertical" refers to the direction from the display area to the bonding area; the horizontal direction is perpendicular to the vertical direction.

[0060] Based on this, embodiments of this application provide a new design for a driving substrate to solve the problem that recessed driving chips cannot be applied to TDDI type display devices in related technologies.

[0061] The embodiments of this application adopt the following technical solutions:

[0062] Embodiments of this application provide a driving substrate, combined with Figure 4 and Figure 5 As shown, the driving substrate includes: a display area AA and a first fan-out area F1, wherein the first fan-out area F1 is located on one side of the display area AA;

[0063] The driving substrate includes multiple touch driving signal lines TX and multiple source driving signal lines Source, all of which extend from the display area AA to the first fan-out area F1.

[0064] like Figure 5As shown, the first fan-out area F1 includes a first area Area1, a second area Area2, and a third area Area3 between the first area Area1 and the second area Area2; wherein a plurality of touch driving signal lines TX extend from the display area AA to the third area Area3, part of the source driving signal lines Source extend from the display area AA to the first area Area1, and part of the source driving signal lines Source extend from the display area AA to the second area Area2.

[0065] It should be noted that, Figure 4 and Figure 5 For the sake of avoiding ambiguity, the same reference signs are used in the same figures, Figure 4 in the figures. Figure 5

[0066] Wherein, the driving substrate can be matched with a TDDI type sunken driving chip.

[0067] In an exemplary embodiment, the driving substrate can be applied in a liquid crystal display panel (LCD), and the liquid crystal display panel can include a twisted nematic (TN) type, a vertical alignment (VA) type, an in plane switching (IPS) type, and an advanced super dimension switch (ADS) type.

[0068] The source driving signal lines Source can be electrically connected with the data lines Data in the display area AA, and one data line Data can be electrically connected with one source driving signal line Source, or a plurality of data lines Data can be electrically connected with one source driving signal line Source.

[0069] Exemplarily, the material of the signal lines (the touch driving signal lines TX and the source driving signal lines Source) can include at least one of copper (Cu), aluminum (Al), titanium (Ti), molybdenum (Mo), and nickel (Ni).

[0070] Here, the specific structure of the touch driving signal lines TX and the source driving signal lines Source is not limited, and exemplarily, the touch driving signal lines TX and the source driving signal lines Source can each include at least one of a straight line segment, a bending structure, or an inclined line segment or an arc-shaped line segment.

[0071] ​In an exemplary embodiment, some source drive signal lines extend from display area AA to the first area Area1, and some source drive signal lines extend from display area AA to the second area Area2; wherein, the number of source drive signal lines Source extending to the first area Area1 can be the same as the number of source drive signal lines Source extending to the second area Area2.

[0072] For example, such as Figure 4 As shown, the source drive signal line Source extending into Area 1 can be arranged symmetrically with the source drive signal line Source extending into Area 2.

[0073] For example, such as Figure 4 As shown, multiple touch driving signal lines TX extending from display area AA to third area Area 3 can include a first part and a second part. The first part of the touch driving signal lines TX extends from the left side of display area AA to third area Area 3, and the second part of the touch driving signal lines TX extends from the right side of display area AA to third area Area 3. The first part of the touch driving signal lines TX and the second part of the touch driving signal lines TX are symmetrically distributed in third area Area 3.

[0074] In addition, such as Figure 3 As shown, in Area 3, there is a gap between the first part of the touch drive signal line TX and the second part of the touch drive signal line TX.

[0075] The driving substrate provided in the embodiments of this application includes a first fan-out area F1 comprising a first area Area1, a second area Area2, and a third area Area3 located between the first area Area1 and the second area Area2; the touch driving signal line TX is disposed in the middle region of the first fan-out area F1 (i.e., the third area Area3), and the source driving signal line Source is disposed in the two side regions (the first area Area1 and the second area Area2), combined with... Figure 5 As shown, this is to facilitate the subsequent placement of the touch switch unit SwitchTX (or TS) in the area below Area 3 and its electrical connection with the touch drive signal line TX.

[0076] Compared to Figure 1 In the related technologies shown, both the touch drive signal line TX and the source drive signal line Source are set in the first area Area1 and the second area Area2, which solves the problem that the touch switch unit Switch TX has nowhere to be placed below the first and second areas in the related technologies, while also ensuring the narrow bezel design of the display device.

[0077] In some embodiments of the driving substrate provided, combined withFigure 4 and Figure 5 As shown in FIG. 1, the driving substrate further comprises a second fan-out area F2, which is located between the first fan-out area F1 and the display area AA.

[0078] In the driving substrate provided in some embodiments, the plurality of touch driving signal lines TX are located in the second fan-out area F2, and the plurality of source driving signal lines Source are located in the second fan-out area F2. The normal projection of the part of the plurality of touch driving signal lines TX on the substrate and the part of the plurality of source driving signal lines Source on the substrate overlap each other. The normal projection of the part of the plurality of touch driving signal lines TX on the substrate and the part of the plurality of source driving signal lines Source on the substrate do not overlap each other.

[0079] In the present specification, “overlap” refers to partial overlap or complete overlap. Similar descriptions hereinafter have similar meanings and will not be described in detail.

[0080] In the driving substrate provided in some embodiments, the plurality of touch driving signal lines TX are located in the second fan-out area F2, and the plurality of source driving signal lines Source are located in the second fan-out area F2. The normal projection of the part of the plurality of touch driving signal lines TX on the substrate and the part of the plurality of source driving signal lines Source on the substrate overlap each other. The normal projection of the part of the plurality of touch driving signal lines TX on the substrate and the part of the plurality of source driving signal lines Source on the substrate do not overlap each other. Figure 4 and Figure 5 As shown in FIG. 1, the driving substrate further comprises a binding area BD, which is located on the side of the first fan-out area FA away from the second fan-out area F2.

[0081] As shown in FIG. 1, the binding area BD comprises a fourth area Area4, a fifth area Area5, and a sixth area Area6 located between the fourth area Area4 and the fifth area Area5. Figure 5 As shown in FIG. 1, the fourth area Area4 and the fifth area Area5 each comprise a plurality of rows of display switch units XS, and the sixth area Area6 comprises at least one row of touch switch units TS. Figure 6 As shown in FIG. 1, the fourth area Area4 and the fifth area Area5 each comprise a plurality of rows of display switch units XS, and the sixth area Area6 comprises at least one row of touch switch units TS.

[0082] Figure 6 As shown in FIG. 1, the fourth area Area4 and the fifth area Area5 each comprise a plurality of rows of display switch units XS, and the sixth area Area6 comprises at least one row of touch switch units TS. Figure 4 As shown in FIG. 1, the fourth area Area4 and the fifth area Area5 each comprise a plurality of rows of display switch units XS, and the sixth area Area6 comprises at least one row of touch switch units TS.

[0083] It should be noted that in actual applications, the display switch unit XS comprises a thin film transistor (TFT), which is used to input a display driving signal (for example, an R, G, or B signal) into a display signal line under the control of a switching signal, and the display driving signal is transmitted to a source driving signal line Source through the display switch unit, so as to detect whether the source driving signal line Source in the driving substrate is electrically normal before the driving chip is bound.

[0084] Similarly, the touch switch unit TS can also comprise a thin film transistor (TFT), which is used to input a common signal into a common signal line under the control of a switching signal, and the common signal is transmitted to a touch driving signal line TX through the touch switch unit TS, so as to detect whether the touch driving signal line TX in the driving substrate is electrically normal before the driving chip is bound. ​

[0085] As shown in Figure 5 and Figure 6 The minimum distance h2 between the touch switch unit TS and the display area AA is less than the minimum distance h1 between the display switch unit XS and the display area AA.

[0086] It should be noted that, as shown in Figure 6 In the sixth area Area6, a plurality of dummy touch switch units Dummy TS are also arranged, and a dummy second output terminal Dummy pin is also connected above the dummy touch switch units Dummy TS, wherein neither the dummy touch switch units Dummy TS nor the dummy second output terminal Dummy pin transmits signals, and the main function is to improve the design uniformity of the binding area, so that the second output terminal 12 can be stably bound with the driving chip in the later binding process.

[0087] The driving substrate provided by the embodiment of the present application has the following advantages. On the one hand, the first fan-out area F1 includes the first area Area1, the second area Area2, and the third area Area3 located between the first area Area1 and the second area Area2; the touch driving signal line TX is arranged in the middle region (i.e., the third area Area3) of the first fan-out area F1, and the source driving signal line Source is arranged in the two side regions (the first area Area1 and the second area Area2); on the other hand, the binding area BD includes the fourth area Area4, the fifth area Area5, and the sixth area Area6 located between the fourth area Area4 and the fifth area Area5, as shown in Figure 6 The fourth area Area4 and the fifth area Area5 each include a plurality of rows of display switch units XS, and the sixth area Area6 includes at least one row of touch switch units TS (or Switch TX); in this way, the touch switch unit Switch TX is arranged below the sixth area Area6 of the third area Area3, so as to be electrically connected with the touch driving signal line TX.

[0088] Compared with the related art shown in Figure 1 The touch driving signal line TX and the source driving signal line Source are arranged in the first area Area1 and the second area Area2 in the related art, which solves the problem that the touch switch unit Switch TX has no place to be arranged below the first area Area1 and the second area Area2 in the related art, and also ensures the narrow-frame design of the display device.

[0089] In the driving substrate provided by some embodiments, as shown in Figure 4 The fourth area Area4 and the fifth area Area5 also include a plurality of rows of first output terminals 11, and the first output terminals 11 are electrically connected with the display switch units XS, as shown in Figure 6As shown, the plurality of rows of first output terminals 11 are located on the side of the display switch unit XS close to the display area AA, and the first output terminals 11 are electrically connected with the source driving signal line Source.

[0090] The sixth area Area6 further includes at least one row of second output terminals 12, and the second output terminals 12 are located on the side of the touch switch unit TS close to the display area AA, and the second output terminals 12 are electrically connected with the touch driving signal line TX.

[0091] The first output terminals 11 and the second output terminals 12 are used for electrical connection with the driving chip (for example, a TDDI type driving chip) in the later stage, so that the driving chip outputs signals and transmits them to the driving substrate. Among them, the first output terminals 11 are used for transmitting display driving signals, and the second output terminals 12 are used for transmitting touch driving signals.

[0092] In the driving substrate provided by the embodiments of the present application, by setting the fourth area Area4 and the fifth area Area5 to further include a plurality of rows of first output terminals 11, the plurality of rows of first output terminals 11 are located on the side of the display switch unit XS close to the display area AA; and by setting the sixth area Area6 to further include at least one row of second output terminals 12, the second output terminals 12 are located on the side of the touch switch unit TS close to the display area AA; in this way, since the second output terminals 12 are arranged in the sixth area Area6, compared with the design in the related art, the design space in the fourth area Area4 and the fifth area Area5 is further released, the problem of insufficient space in the sinking area corresponding to the sinking driving chip is solved, and in addition, since the touch driving signal line TX is arranged in the third area Area3, the second output terminals 12 are further electrically connected with the touch driving signal line TX, so that the sinking driving chip is applied in the TDDI type driving substrate.

[0093] Figure 6 The local design in the fourth area Area4 is shown, and since the fourth area Area4 and the fifth area Area5 are symmetrically arranged, the design in the fifth area Area5 is similar to the design in the fourth area Area4. Figure 6 The design in the fourth area Area4 is shown.

[0094] In the driving substrate provided by some embodiments, as shown, Figure 6 In the fourth area Area4 and the fifth area Area5, the display switch unit XS includes a first display switch unit S1, a second display switch unit S2 and a third display switch unit S3.

[0095] The fourth area Area 4 and the fifth area Area 5 also each include a first switch signal line SW1, a second switch signal line SW2, a third switch signal line SW3, a first display signal line (for example, RL), a second display signal line (for example, GL), and a third display signal line (for example, BL) extending along a first direction intersecting the extension direction of the source driving signal line Source;

[0096] The first display switch unit S1 is electrically connected with the first switch signal line SW1, the first display signal line (for example, RL), and the source driving signal line Source respectively, the second display switch unit S2 is electrically connected with the second switch signal line SW2, the second display signal line (for example, GL), and the source driving signal line Source respectively, and the third display switch unit S3 is electrically connected with the third switch signal line SW3, the third display signal line (for example, BL), and the source driving signal line Source respectively.

[0097] In an exemplary embodiment, the first display switch unit S1 can be one of a red display switch, a green display switch, and a blue display switch, the second display switch S2 can be a second one of the red display switch, the green display switch, and the blue display switch, and the third display switch S3 can be a third one of the red display switch, the green display switch, and the blue display switch.

[0098] Embodiments of the present application take the first display switch unit S1 as a red display switch, the second display switch S2 as a green display switch, and the third display switch S3 as a blue display switch as an example for description.

[0099] For example, the first display signal line can be one of a red display signal line, a green display signal line, and a blue display signal line, the second display signal line can be a second one of the red display signal line, the green display signal line, and the blue display signal line, and the third display signal line can be a third one of the red display signal line, the green display signal line, and the blue display signal line.

[0100] The first display signal line can be a red display signal line RL, the second display signal line can be a green display signal line GL, and the third display signal line can be a blue display signal line BL as an example for description in the specification.

[0101] In addition, it should be noted that the first switch signal line SW1, the second switch signal line SW2, the third switch signal line SW3, the first display signal line (for example, RL), the second display signal line (for example, GL), and the third display signal line (for example, BL) extend along a first direction, the first direction is an extension trend, and does not represent a limitation on the structure of the above-mentioned signal lines. The above-mentioned signal lines can include at least one of a straight line, a broken line, or a curve.

[0102] In some embodiments, one of the first display switch unit S1, the second display switch unit S2 and the third display switch unit S3 is commonly electrically connected with the touch switch unit TS to one switch signal line.

[0103] For example, the first display switch unit S1 can be commonly electrically connected with the touch switch unit TS to one switch signal line, such as the switch signal line SW1.

[0104] For another example, the second display switch unit S2 can be commonly electrically connected with the touch switch unit TS to one switch signal line, such as the switch signal line SW2.

[0105] For yet another example, the third display switch unit S3 can be commonly electrically connected with the touch switch unit TS to one switch signal line, such as the switch signal line SW3.

[0106] In some embodiments, the first display switch unit S1 is commonly electrically connected with the touch switch unit TS to the switch signal line SW1. Figure 6 In some embodiments, the first display switch unit S1 is commonly electrically connected with the touch switch unit TS to the switch signal line SW1.

[0107] In some embodiments, the touch switch unit TS is electrically connected to the switch signal line (such as SW1, Figure 6 In some embodiments, the switch signal line SW1 (the trend of the trace of SW1 is marked by a dashed segment in the figure) extends from the sixth area Area6 to the fourth area Area4 and the fifth area Area5. Figure 6 In some embodiments, the fourth area Area4 and the fifth area Area5 are symmetrically arranged. Figure 6 In some embodiments, the fourth area Area4 and the fifth area Area5 are symmetrically arranged. Figure 6 In some embodiments, the fourth area Area4 and the fifth area Area5 are symmetrically arranged.

[0108] In some embodiments, the binding area BD further includes a common signal line Com. Figure 6 In some embodiments, the binding area BD further includes a common signal line Com. Figure 7 In some embodiments, the common signal line Com is located on the side of the first switch signal line SW1, the second switch signal line SW2, the third switch signal line SW3, the first display signal line (such as RL), the second display signal line (such as GL) and the third display signal line (such as BL) away from the display area AA.

[0109] In some embodiments, the common signal line Com extends from the sixth area Area6 to the fourth area Area4 and the fifth area Area5.

[0110] In some embodiments, the common signal line Com extends from the sixth area Area6 to the fourth area Area4 and the fifth area Area5. Figure 7 In some embodiments, the common signal line Com extends from the sixth area Area6 to the fourth area Area4 and the fifth area Area5. Figure 4 In some embodiments, the common signal line Com extends from the sixth area Area6 to the fourth area Area4 and the fifth area Area5.

[0111] In some embodiments, the binding area BD further comprises at least one row of input terminals 2, the input terminals 2 are located on the side of the output terminals 1 away from the display area AA, and the common signal line Com is located between the input terminals 2 and the output terminals 1; the output terminals 1 comprise first output terminals 11 and second output terminals 12.

[0112] In combination with Figure 5 , Figure 6 and Figure 7 , it is shown that the fourth area Area4 and the fifth area Area5 each comprise an edge region BY (as shown in Figure 7 for the edge region of the fourth area Area4) and a middle region ZJ (as shown in Figure 6 for the middle region of the fourth area Area4), the edge region BY is located on the side of the middle region ZJ away from the sixth area Area6, wherein the minimum distance h3 between the first output terminals 11 and the input terminals 2 in the middle region ZJ is greater than the minimum distance h4 between the first output terminals 11 and the input terminals 2 in the edge region BY.

[0113] In the embodiments of the present application, in combination with Figure 5 and Figure 7 , since in the edge region of the fourth area Area4, the sunken design of each first output terminal 11 (i.e. the plurality of first output terminals 11 are arranged obliquely to the lower edge of the driving substrate), the distance between the first output terminals 11 and the input terminals 2 in this region becomes smaller, and ultimately, the region between the first output terminals 11 and the input terminals 2 in this region can accommodate the common signal line Com extending through and connecting together with the common signal lines Com on the left and right sides of the display area AA.

[0114] Figure 7 shows the local design of the common signal line Com in the fourth area Area4, since the fourth area Area4 and the fifth area Area5 are symmetrically arranged, the design of the common signal line Com in the fifth area Area5 is similar to the design of the common signal line Com in the fourth area Area4 as shown in Figure 7 .

[0115] In some embodiments of the driving substrate provided, as shown in Figure 7 , the planar size of at least part of the input terminals 2 (the input terminals 2 marked in the elliptical circle in Figure 7 ) in the edge region BY is smaller than the planar size of the input terminals 2 in the middle region ZJ.

[0116] The planar size can include the area of the orthographic projection of the input terminal 2 on the substrate of the driving substrate, and the length of the orthographic projection of the input terminal 2 on the substrate of the driving substrate in the direction from the display area to the binding area.

[0117] In the embodiments of the present application, due to the sunken design of each first output terminal 11 (i.e. the plurality of first output terminals 11 are arranged obliquely towards the lower edge of the driving substrate), the distance between the first output terminal 11 and the input terminal 2 in this area is reduced; by setting the planar size of at least part of the input terminal 2 (the input terminal 2 marked in the middle ellipse) in the edge area BY to be smaller than the planar size of the input terminal 2 in the middle area ZJ, a space is left for the common signal line Com, so that the common signal line Com extends through between the output terminal and the input terminal, and is connected together with the common signal lines Com on the left and right sides of the display area AA. Figure 7 In the embodiments of the present application, due to the sunken design of each first output terminal 11 (i.e. the plurality of first output terminals 11 are arranged obliquely towards the lower edge of the driving substrate), the distance between the first output terminal 11 and the input terminal 2 in this area is reduced; by setting the planar size of at least part of the input terminal 2 (the input terminal 2 marked in the middle ellipse) in the edge area BY to be smaller than the planar size of the input terminal 2 in the middle area ZJ, a space is left for the common signal line Com, so that the common signal line Com extends through between the output terminal and the input terminal, and is connected together with the common signal lines Com on the left and right sides of the display area AA.

[0118] Figure 7 The size design of part of the input terminals 2 in the fourth area Area4 is shown, and due to the symmetrical arrangement of the fourth area Area4 and the fifth area Area5, the size design of part of the input terminals 2 in the fifth area Area5 is similar to that of part of the input terminals 2 in the fourth area Area4 shown. Figure 7 The size design of part of the input terminals 2 in the fourth area Area4 is shown, and due to the symmetrical arrangement of the fourth area Area4 and the fifth area Area5, the size design of part of the input terminals 2 in the fifth area Area5 is similar to that of part of the input terminals 2 in the fourth area Area4 shown.

[0119] In some embodiments of the driving substrate provided, as shown in Figure 6 In the sixth area Area6, the minimum distance h5 between the second output terminal 12 and the input terminal 2 is greater than the minimum distance h3 between the first output terminal 11 and the input terminal 2 in the middle area ZJ.

[0120] In some embodiments of the driving substrate provided, as shown in Figure 7 In some embodiments of the driving substrate provided, as shown in

[0121] Exemplarily, as shown in Figure 7 Exemplarily, as shown in

[0122] In some embodiments of the driving substrate provided, the driving substrate comprises:

[0123] a substrate;

[0124] a gate layer Gate located on one side of the substrate;

[0125] and a source-drain conductive layer SD located away from the substrate side of the gate layer Gate, and the gate layer Gate and the source-drain conductive layer SD are insulatively arranged;

[0126] The source driving signal line Source, the common signal line Com, the first switch signal line SW1, the second switch signal line SW2, the third switch signal line SW3, the first display signal line (for example, RL), the second display signal line (for example, GL), and the third display signal line (for example, BL) are all arranged in the gate layer Gate, and the touch driving signal line TX is arranged in the source-drain conductive layer SD.

[0127] Here, the specific material of the substrate is not limited. For example, the substrate can be any one of silicon, glass, quartz, PET, plastic, and the like.

[0128] Here, the specific material of the source-drain conductive layer SD and the gate layer Gate is not limited.

[0129] For example, the material of the gate layer Gate can include copper, for example, a laminated structure of MoNb / Cu / MoNb can be formed by sputtering, wherein the material close to the substrate 100 is MoNb, the thickness is about 100-200 nm, mainly used to improve the adhesion between the film layers, the material of the middle layer of the laminated structure is Cu, which is the material of the electrical signal transmission channel, and the material away from the substrate 100 is MoNb, the thickness is about 100-200 nm, which can be used to protect the middle layer and prevent the surface of the low-resistance middle layer from being exposed to oxidation. Since the thickness of a single sputtering is generally not more than 1 μm, when the gate line GL with a thickness of more than 1 μm is made, multiple sputtering is needed to form. In addition, it can also be formed by electroplating. Specifically, a seed layer of MoNiTi can be first formed to improve the nucleation density of metal grains in the subsequent electroplating process, and then low-resistance copper is made by electroplating, and then an anti-oxidation layer is made, which can be MoNiTi. For example, the material of the gate layer Gate can include copper, for example, a laminated structure of MoNb / Cu / MoNb can be formed by sputtering, wherein the material close to the substrate 100 is MoNb, the thickness is about 100-200 nm, mainly used to improve the adhesion between the film layers, the material of the middle layer of the laminated structure is Cu, which is the material of the electrical signal transmission channel, and the material away from the substrate 100 is MoNb, the thickness is about 100-200 nm, which can be used to protect the middle layer and prevent the surface of the low-resistance middle layer from being exposed to oxidation. Since the thickness of a single sputtering is generally not more than 1 μm, when the gate line GL with a thickness of more than 1 μm is made, multiple sputtering is needed to form. In addition, it can also be formed by electroplating. Specifically, a seed layer of MoNiTi can be first formed to improve the nucleation density of metal grains in the subsequent electroplating process, and then low-resistance copper is made by electroplating, and then an anti-oxidation layer is made, which can be MoNiTi.

[0130] For example, the material of the source-drain conductive layer SD can be the same as that of the gate layer Gate.

[0131] In some embodiments, the driving substrate further comprises a plurality of first connection lines L1, second connection lines L2, third connection lines L3, and fourth connection lines L4. Figure 6 Figure 7 As shown in FIG. 1, the driving substrate further comprises a plurality of first connection lines L1, second connection lines L2, third connection lines L3, and fourth connection lines L4.

[0132] For example, the material of the gate layer Gate can include copper, for example, a laminated structure of MoNb / Cu / MoNb can be formed by sputtering, wherein the material close to the substrate 100 is MoNb, the thickness is about 100-200 nm, mainly used to improve the adhesion between the film layers, the material of the middle layer of the laminated structure is Cu, which is the material of the electrical signal transmission channel, and the material away from the substrate 100 is MoNb, the thickness is about 100-200 nm, which can be used to protect the middle layer and prevent the surface of the low-resistance middle layer from being exposed to oxidation. Since the thickness of a single sputtering is generally not more than 1 μm, when the gate line GL with a thickness of more than 1 μm is made, multiple sputtering is needed to form. In addition, it can also be formed by electroplating. Specifically, a seed layer of MoNiTi can be first formed to improve the nucleation density of metal grains in the subsequent electroplating process, and then low-resistance copper is made by electroplating, and then an anti-oxidation layer is made, which can be MoNiTi. Figure 7 ​​As shown, the first connection line L1 is used to connect the display switch unit XS and the source driving signal line Source, and the second connection line L2 is used to connect the display switch unit XS and the display signal line (for example, RL, GL, BL); the display signal line includes at least one of the first display signal line, the second display signal line and the third display signal line;

[0133] As shown, the third connection line L3 is used to connect the touch switch unit TS and the touch driving signal line TX, and the fourth connection line L4 is used to connect the touch switch unit TS and the common signal line Com. Figure 6

[0134] The first connection line L1, the second connection line L2, the third connection line L3 and the fourth connection line L4 are all arranged on the source-drain conductive layer SD.

[0135] It should be noted that, in order to avoid being unclear, in the partial enlarged view of Figure 6 and Figure 7 , the first connection line L1 is only drawn with part of the line segment, and is not connected with the source driving signal line Source; in actual application, the first connection line L1 is connected with the source driving signal line Source.

[0136] Embodiments of the present application provide a display device, which comprises the driving substrate as described in any one of the preceding embodiments, and further comprises a driving chip, which is a touch and display driver integration (TDDI) driving chip.

[0137] The display device described above can be a display device of TDDI (Touch and Display Driver Integration) technology.

[0138] For example, the display device of TDDI technology can include an ADS (Advanced Super Dimension Switch) type liquid crystal touch display screen or an HADS type liquid crystal touch display screen, and the specific type of the display panel is not limited here.

[0139] ​For the display device of the TDDI technology, the driving chip IC is a TDDI chip, the driving substrate thereof includes a touch driving signal line TX and a source driving signal line Source, the source driving signal line Source can transmit a display driving signal outputted in the TDDI chip to a data signal line (Data line) in the display panel, so as to control the display of each pixel unit in the display area AA; the touch driving signal line TX can transmit a touch driving signal outputted in the TDDI chip to a touch driving signal line TX in the display panel, so as to control the touch sensor to realize the touch function.

[0140] The specific structure of the driving substrate included in the display device can refer to the foregoing description, which will not be repeated here.

[0141] The display device can be a touch display panel, and any product or component with a display function, such as a television, a digital camera, a mobile phone, a tablet computer, etc., which includes the touch display panel.

[0142] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which shall be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A drive substrate, characterized by, The display panel comprises: a display area and a first fan-out area located at one side of the display area; the driving substrate comprises a plurality of touch driving signal lines and a plurality of source driving signal lines, the plurality of touch driving signal lines and the plurality of source driving signal lines both extend from the display area to the first fan-out area; the first fan-out area comprises a first area, a second area, and a third area located between the first area and the second area; wherein the plurality of touch driving signal lines extend from the display area to the third area, part of the source driving signal lines extend from the display area to the first area, and part of the source driving signal lines extend from the display area to the second area.

2. The drive substrate according to claim 1, wherein the driving substrate further comprises a second fan-out area located between the first fan-out area and the display area; wherein the normal projection of the part of the plurality of touch driving signal lines located in the second fan-out area and the part of the plurality of source driving signal lines located in the second fan-out area on the substrate of the driving substrate overlaps, and the normal projection of the part of the plurality of touch driving signal lines located in the first fan-out area and the part of the plurality of source driving signal lines located in the first fan-out area on the substrate does not overlap.

3. The drive substrate according to claim 2, wherein the driving substrate further comprises a binding area located at the side of the first fan-out area away from the second fan-out area; the binding area comprises a fourth area, a fifth area, and a sixth area located between the fourth area and the fifth area, the fourth area and the fifth area both comprise a plurality of rows of display switch units, and the sixth area comprises at least one row of touch switch units.

4. The drive substrate according to claim 3, wherein the fourth area and the fifth area further comprise a plurality of rows of first output terminals, the plurality of rows of first output terminals are both located at the side of the display switch unit close to the display area, and the first output terminal is electrically connected with the source driving signal line; the sixth area further comprises at least one row of second output terminals, the second output terminals are both located at the side of the touch switch unit close to the display area, and the second output terminal is electrically connected with the touch driving signal line.

5. The drive substrate according to claim 4, wherein in the fourth area and the fifth area, the display switch units respectively comprise first display switch units, second display switch units and third display switch units; the fourth area and the fifth area both further comprise a first switch signal line, a second switch signal line, a third switch signal line, a first display signal line, a second display signal line and a third display signal line extending along a first direction, and the first direction intersects with the extension direction of the source driving signal line; the first display switch unit is electrically connected with the first switch signal line, the first display signal line and the source driving signal line respectively, the second display switch unit is electrically connected with the second switch signal line, the second display signal line and the source driving signal line respectively, and the third display switch unit is electrically connected with the third switch signal line, the third display signal line and the source driving signal line respectively.

6. The drive substrate according to claim 5, wherein one of the first display switch unit, the second display switch unit and the third display switch unit is commonly electrically connected with one switch signal line of the touch switch unit.

7. The drive substrate according to claim 6, wherein The switch signal line electrically connected with the touch switch unit extends from the sixth area to the fourth area and the fifth area.

8. The driving substrate according to claim 6, wherein, The binding area further comprises a common signal line, the common signal line is located on the side of the first switch signal line, the second switch signal line, the third switch signal line, the first display signal line, the second display signal line and the third display signal line away from the display area; The common signal line extends from the sixth area to the fourth area and the fifth area on both sides; the touch switch unit is further electrically connected with the common signal line and the touch driving signal line respectively.

9. The drive substrate according to claim 8, wherein The binding area further comprises at least one row of input terminals, the input terminals are located on the side of the output terminals away from the display area, and the output terminals include the first output terminal and the second output terminal; The fourth area and the fifth area each include an edge region and an intermediate region, the edge region is located on the side of the intermediate region away from the sixth area, wherein the minimum distance between the first output terminal and the input terminal in the intermediate region is greater than the minimum distance between the first output terminal and the input terminal in the edge region.

10. The drive substrate according to claim 9, wherein The planar size of at least part of the input terminals in the edge region is smaller than the planar size of the input terminals in the intermediate region.

11. The drive substrate according to claim 9, wherein In the sixth area, the minimum distance between the second output terminal and the input terminal is greater than the minimum distance between the first output terminal and the input terminal in the intermediate region.

12. The drive substrate according to claim 8, wherein At least one of the first switch signal line, the second switch signal line, the third switch signal line, the first display signal line, the second display signal line, the third display signal line and the common signal line comprises a stepped line segment.

13. The drive substrate according to any one of claims 8 to 12, characterized by The driving substrate comprises: a substrate; a gate layer located on one side of the substrate; and a source-drain conductive layer located on the side of the gate layer away from the substrate, which is insulated between the gate layer and the source-drain conductive layer; wherein the source driving signal line, the common signal line, the first switch signal line, the second switch signal line, the third switch signal line, the first display signal line, the second display signal line and the third display signal line are all arranged on the gate layer; and the touch driving signal line is arranged on the source-drain conductive layer.

14. The drive substrate according to claim 13, wherein The driving substrate further comprises a plurality of first connection lines, second connection lines, third connection lines and fourth connection lines; The first connection lines are used to connect the display switch unit and the source driving signal line, and the second connection lines are used to connect the display switch unit and the display signal line; the display signal line includes at least one of the first display signal line, the second display signal line and the third display signal line; The third connection lines are used to connect the touch switch unit and the touch driving signal line, and the fourth connection lines are used to connect the touch switch unit and the common signal line; wherein the first connection lines, the second connection lines, the third connection lines and the fourth connection lines are all arranged on the source-drain conductive layer.

15. A display device comprising: The display device comprises the driving substrate as claimed in any one of claims 1 to 14, and further comprises a driving chip, which is a touch and display integrated driving chip.

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