Array substrate and display device

Abstract

An array substrate and a display device, the array substrate has a display area, a chip binding area and a circuit board binding area, the chip binding area is located at one side of the display area, and the circuit board binding area is located at the side of the chip binding area away from the display area; wherein the array substrate comprises: a substrate; a plurality of touch electrodes and a plurality of data lines, the plurality of touch electrodes and the plurality of data lines are arranged on the substrate and located in the display area; a plurality of input terminals, the plurality of input terminals are located in the circuit board binding area and used for binding connection with a flexible circuit board; a plurality of display data terminals and a plurality of touch terminals, the plurality of display data terminals and the plurality of touch terminals are located in the chip binding area and used for binding connection with a driving chip; the plurality of touch terminals are located at the side of the plurality of display data terminals away from the display area, the display data terminals are connected with the data lines, and the touch terminals are electrically connected with the touch electrodes and the input terminals.

Description

Array substrate and display device Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically to an array substrate and a display device. Background Technology

[0002] With the diversification of display devices and the increasing demand for touch functionality, various touch solutions are emerging. In some products, the touch solution is integrated into the display panel, and the common electrode is reused as the touch electrode. The driver chip provides touch driving signals to the touch electrode during the touch phase and provides a common voltage signal to the common electrode during the display phase. Summary of the Invention

[0003] This disclosure aims to solve at least one of the technical problems existing in the prior art, and proposes an array substrate and a display device.

[0004] To achieve the above objectives, this disclosure provides an array substrate having a display area, a chip bonding area, and a circuit board bonding area, wherein the chip bonding area is located on one side of the display area, and the circuit board bonding area is located on the side of the chip bonding area away from the display area; wherein, the array substrate includes:

[0005] Substrate;

[0006] Multiple touch electrodes and multiple data lines are disposed on the substrate and located in the display area;

[0007] Multiple input terminals are located in the circuit board bonding area and are used for bonding and connecting with the flexible circuit board.

[0008] The device includes multiple display data terminals and multiple touch terminals, which are located in the chip bonding area for bonding and connection with the driver chip. The multiple touch terminals are located on the side of the multiple display data terminals away from the display area. The display data terminals are connected to the data line, and the touch terminals are electrically connected to the touch electrode and the input terminal.

[0009] In some embodiments, the array substrate further includes:

[0010] Multiple touch lines are located in the display area, and the touch lines are electrically connected to the touch electrodes;

[0011] Multiple touch leads are connected between the touch lines and the touch terminals;

[0012] Multiple data leads are connected between the data line and the display data terminal.

[0013] In some embodiments, the touch lead and the data lead are located on different layers, and the orthographic projection of the touch lead on the substrate overlaps with the orthographic projection of the data lead on the substrate.

[0014] In some embodiments, the touch lead and the touch line are disposed on the same layer.

[0015] In some embodiments, the display area is further provided with a grid line, the touch lead and the touch line are both disposed on the same layer as the data line, and / or the data lead is disposed on the same layer as the grid line.

[0016] In some embodiments, the touch leads and the data leads are located on different layers.

[0017] In some embodiments, each of the touch terminals is electrically connected to an input terminal via a transmission line, and the touch terminal, the transmission line, and the input terminal include a conductive layer located on the same layer.

[0018] In some embodiments, a test circuit is further provided between the plurality of display data terminals and the plurality of touch terminals. The test circuit is electrically connected to the touch electrodes and is used to provide test signals to the touch electrodes.

[0019] In some embodiments, the display area and the chip bonding area are arranged along a first direction;

[0020] The plurality of touch terminals are arranged along a second direction, which intersects with the first direction.

[0021] In some embodiments, the display area and the chip bonding area are arranged along a first direction; the chip bonding area is further provided with a plurality of first power supply terminals for bonding and connecting with the driver chip, and the circuit board bonding area is further provided with a plurality of second power supply terminals for bonding and connecting with the flexible circuit board, and each first power supply terminal is electrically connected to one of the second power supply terminals;

[0022] A plurality of first power supply terminals and a plurality of touch terminals are arranged along a second direction, and a first redundant terminal is provided between the first power supply terminals and the touch terminals; and / or, a plurality of second power supply terminals and a plurality of input terminals are arranged along a second direction, and a second redundant terminal is provided between the second power supply terminals and the input terminals;

[0023] The second direction intersects with the first direction.

[0024] In some embodiments, the display area and the circuit board bonding area are arranged along a first direction;

[0025] The touch terminal includes at least two conductive portions arranged along a second direction, and each conductive portion in the same touch terminal is electrically connected to the same touch electrode; the second direction intersects the first direction.

[0026] In some embodiments, the touch electrode is located on the side of the layer containing the touch line away from the substrate and is electrically connected to the touch line through a via.

[0027] This disclosure also provides a display device, including:

[0028] The aforementioned array substrate;

[0029] A flexible circuit board having a plurality of first bonding terminals; the first bonding terminals are electrically connected to the input terminals.

[0030] Each of the input terminals of the array substrate is electrically connected to one of the first bonding terminals.

[0031] In some embodiments, the flexible circuit board further includes shorting traces that electrically connect the respective first bonding terminals to each other.

[0032] In some embodiments, the chip bonding area is further provided with a plurality of first power supply terminals, the plurality of first power supply terminals including a first common voltage terminal; the circuit board bonding area is further provided with a plurality of second power supply terminals, the plurality of second power supply terminals including a second common voltage terminal, the second common voltage terminal being electrically connected to the first common voltage terminal; the flexible circuit board further has a second bonding terminal, the second bonding terminal being electrically connected to the second common voltage terminal and the shorting trace;

[0033] The display device further includes:

[0034] The display driver chip is bonded and connected to the plurality of touch terminals, the plurality of display data terminals, and the first common voltage terminal. The display driver chip is configured to provide data voltage signals to each of the display data terminals and to provide a common voltage signal to the first common voltage terminal. The display driver chip is in a floating state when connected to the touch terminals.

[0035] In some embodiments, the first bonding terminals of the flexible circuit board are insulated from each other.

[0036] In some embodiments, the display device further includes:

[0037] A touch display driver chip is bonded and connected to multiple touch terminals and multiple display data terminals. It is configured to provide a common voltage signal to each touch terminal and a data voltage signal to each display data terminal during the display phase; and to provide a touch driving signal to each touch terminal during the touch phase. Attached Figure Description

[0038] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0039] Figure 1A is a schematic diagram of an array substrate in a pure display device provided in some embodiments.

[0040] Figure 1B is a schematic diagram showing the arrangement of a driver chip and a flexible circuit board on the array substrate in Figure 1A.

[0041] Figure 2A is a schematic diagram of an array substrate in a touch display device provided in some embodiments.

[0042] Figure 2B is a plan view of the driver chip and flexible circuit board arranged on the array substrate in Figure 2A.

[0043] Figure 3 is a schematic diagram of an array substrate provided in some embodiments of this disclosure.

[0044] Figure 4 is a schematic diagram of the structure of the chip bonding area provided in some embodiments of this disclosure.

[0045] Figure 5 is a schematic diagram of a pure display device provided in some embodiments of this disclosure.

[0046] Figure 6 is a plan view of a flexible circuit board in a pure display device provided in some embodiments of this disclosure.

[0047] Figure 7 is a schematic diagram of a touch display device provided in some embodiments.

[0048] Figure 8 is a plan view of a flexible circuit board in a touch display device provided in some embodiments of this disclosure. Detailed Implementation

[0049] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0051] Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0052] As used herein, “parallel” and “perpendicular” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°.

[0053] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0054] This document describes exemplary embodiments with reference to sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Therefore, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. Thus, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0055] Figure 1A is a schematic diagram of an array substrate in a pure display device provided in some embodiments, and Figure 1B is a schematic diagram of a driver chip and a flexible circuit board disposed on the array substrate in Figure 1A. The term "pure display device" refers to a display device that has display function but no touch function. This pure display device includes a liquid crystal display panel, which includes an array substrate and a cell substrate disposed opposite to each other, and a liquid crystal layer located between them. As shown in Figure 1A, in the pure display device, the array substrate has a display area AA, a chip bonding area IA located on one side of the display area AA, and a circuit board bonding area BA located on the side of the chip bonding area IA away from the display area AA. The array substrate includes a substrate 10, and multiple gate lines GL, multiple data lines DL, and a common electrode 11 disposed on the substrate 10. The gate lines GL, data lines DL, and common electrode 11 are all located in the display area AA. Multiple gate lines GL and multiple data lines DL intersect to define multiple pixel regions. Each pixel region can be provided with a pixel electrode and a thin-film transistor (not shown). The gate of the thin-film transistor is electrically connected to the corresponding gate line GL, the source is electrically connected to the data line DL, and the drain is electrically connected to the pixel electrode.

[0056] As shown in Figure 1B, the display driver chip 21 is bonded to the chip bonding area IA and electrically connected to each data line DL and the common electrode 11. The first end of the flexible circuit board 30 is bonded to the circuit board bonding area BA, and the second end is electrically connected to the driver circuit board. For example, the circuit board bonding area BA has multiple input terminals 15. The first end of the flexible circuit board 30 is bonded to the input terminals 15, thereby transmitting the display drive signals provided by the driver circuit board to the multiple input terminals 15. The display drive signals may include power signals such as high-level voltage, low-level voltage, and ground voltage, as well as signals related to the content of the displayed screen. The chip bonding area IA has a receiving terminal 14, a display data terminal 12, and a common voltage terminal 16. The receiving terminal 14 is electrically connected to the input terminals 15, the display data terminal 12 is electrically connected to the data line DL, and the common voltage terminal 16 is electrically connected to the common electrode 11. The display driver chip 21 is electrically connected to the receiving terminal 14, the display data terminal 12, and the common voltage terminal 16, thereby realizing the electrical connection between the display driver chip 21 and the flexible circuit board 30, the data line DL, and the common electrode 11.

[0057] When the pure display device is displaying, the gate driving circuit (not shown) sequentially provides scanning signals to multiple gate lines GL to control the thin film transistors in each row to turn on row by row; and when the gate line GL is scanned, the display driving chip 21 is configured to provide data voltage signals to each data line DL according to the display driving signal provided by the flexible circuit board 30, so that the thin film transistors transmit the data voltage to the pixel electrode; in addition, the display driving chip 21 is also configured to provide a common voltage to the common electrode 11, so that an electric field is generated between the pixel electrode and the common electrode 11 to drive the liquid crystal corresponding to the pixel area to deflect.

[0058] Figure 2A is a schematic diagram of the array substrate in a touch display device provided in some embodiments, and Figure 2B is a plan view of a driver chip and a flexible circuit board disposed on the array substrate in Figure 2A. Unlike a pure display device, a touch display device has both touch and display functions. The array substrate structure in Figure 2A is similar to that in Figure 1A; only the differences between the two will be described below. In the array substrate of Figure 2A, the display area AA is provided with multiple touch electrodes 11a, which can be reused as common electrodes during the display stage. As shown in Figure 2B, the chip bonding area IA is provided with a touch display driver chip 22. Each touch electrode 11a and each data line DL are electrically connected to the touch display driver chip 22, which has both touch driving and display driving functions. For the structure shown in Figure 2A, each display cycle is divided into a display stage and a touch stage. The touch display driver chip 22 is configured to provide data voltage to the data line DL and a common voltage to each touch electrode 11a according to the display drive signal provided by the flexible circuit board 30 during the display stage; and to provide touch drive signals to the touch electrodes 11a and receive the sensing signals generated by the touch electrodes 11a to determine the touch position during the touch stage.

[0059] To achieve the connection between the touch display driver chip 22 and each touch electrode 11a, as well as each data line DL, in the array substrate shown in FIG2A, the circuit board bonding area BA is provided with input terminals 15, and the flexible circuit board 30 is bonded to the input terminals 15, thereby transmitting the display drive signal provided by the driver circuit board to multiple input terminals 15. The chip bonding area IA is provided with receiving terminals 14, display data terminals 12, and touch terminals 13. The receiving terminal 14 is electrically connected to the input terminals 15, thereby receiving the display drive signal. The display data terminal 12 is electrically connected to the data line DL, and the touch terminal 13 is electrically connected to the touch line TXL, and the touch terminal 13 is not connected to the terminals in the circuit board bonding area BA. During the display stage, the touch display driver chip 22 generates a data voltage signal according to the display drive signal received by the receiving terminal 14, and provides the data voltage signal to the data line DL through the display data terminal 12; and provides touch signals to each touch electrode 11a through the touch terminal 13.

[0060] As described above, the terminal arrangement in the circuit board bonding area BA differs between pure display devices and touch display devices, and the connection methods between the terminals and the structures in the display area AA are also different. Currently, the same array substrate cannot achieve compatibility between touch display and pure display. That is, once the array substrate is manufactured, it can only be used in either touch display devices or pure display devices, resulting in low flexibility in its use.

[0061] To solve the above-mentioned technical problems, this disclosure provides an array substrate. FIG3 is a schematic diagram of an array substrate provided in some embodiments of this disclosure. As shown in FIG3, the array substrate has a display area AA, a chip bonding area IA and a circuit board bonding area BA. The chip bonding area IA is located on one side of the display area AA, and the circuit board bonding area BA is located on the side of the chip bonding area IA away from the display area AA.

[0062] The array substrate includes a substrate 10, and on the substrate 10 are: multiple touch electrodes 11a, multiple data lines DL, multiple input terminals 15, multiple display data terminals 12, and multiple touch terminals 13. The touch electrodes 11a and data lines DL are located in the display area AA. This embodiment does not limit the arrangement of the touch electrodes 11a; for example, the multiple touch electrodes 11a can be arranged in an array. The data lines DL extend along a first direction. The multiple input terminals 15 are located in the circuit board bonding area BA and are used for bonding and connecting with the flexible circuit board 30. The multiple display data terminals 12 and multiple touch terminals 13 are located in the chip bonding area IA and are used for bonding and connecting with a driver chip. This driver chip can be a display driver chip with only display driving function, or a touch display driver chip with both display driving and touch driving functions. The multiple touch terminals 13 are located on the side of the multiple display data terminals 12 away from the display area AA, and the display data terminals 12 are connected to the data lines DL. For example, the display data terminals 12 and data lines DL are connected in a one-to-one correspondence. Each touch terminal 13 is electrically connected to a touch electrode 11a and an input terminal 15.

[0063] The array substrate in this embodiment is used in a touch display device, and can also be used in a pure display device. Specifically, when the array substrate is used in a pure display device, a display driver chip can be bonded in the chip bonding area IA, and a flexible circuit board 30 can be bonded in the circuit board bonding area BA. The flexible circuit board 30 is electrically connected to the touch terminal 13, and the traces on the flexible circuit board 30 can be used to short-circuit the multiple touch terminals 13 to achieve the purpose of multiple touch electrodes 11a receiving the same common voltage signal. When the array substrate is used in a touch display device, a touch display driver chip can be bonded in the chip bonding area IA, and the touch display driver chip 22 can be used to provide touch signals to each touch terminal 13. The flexible circuit board 30 is bonded in the circuit board bonding area BA, and the flexible circuit board 30 is electrically connected to the touch terminal 13, and the multiple touch terminals 13 are spaced apart from each other, thereby ensuring that the multiple touch electrodes 11a receive touch signals independently. Therefore, in this embodiment of the disclosure, by designing the terminals of the chip bonding area IA and the circuit board bonding area BA, the array substrate can be made compatible with both touch display products and pure display products, thereby making the use of the array substrate more flexible.

[0064] In some embodiments, as shown in FIG3, a fan-out region FA is provided between the display area AA and the chip bonding area IA. The array substrate further includes: multiple touch leads TXLa, multiple touch lines TXL, and multiple data leads DLa. The touch lines TXL are located in the display area AA and are electrically connected to the touch electrode 11a. For example, the touch lines TXL are connected one-to-one with the touch electrodes 11a. At least a portion of the touch leads TXLa are located in the fan-out region FA and connected between the touch lines TXL and the touch terminal 13, thereby electrically connecting the touch terminal 13 and the touch electrode 11a via the touch lines TXL and TXLa. The data leads DLa are located in the fan-out region FA and connected between the data line DL and the display data terminal 12, thereby realizing the electrical connection between the display data terminal 12 and the data line DL.

[0065] In some embodiments, the touch lead TXLa may be located on a different layer from at least a portion of the multiple data leads DLa. For example, all multiple data lines DL are arranged on the same layer, and the touch lead TXLa is located on a different layer from any one of the multiple data lines DL; or, for another example, the multiple data leads DLa are arranged in two separate layers, the multiple touch leads TXLa are arranged on the same layer, and the touch lead TXLa is located on a different layer from some of the data leads DLa. By placing the touch lead TXLa and at least a portion of the data leads DLa on different layers, the embodiments of this disclosure facilitate wiring in the fan-out area FA and prevent the touch lead TXLa and data leads DLa from being too densely distributed in the fan-out area FA, which could lead to short circuits.

[0066] It should be noted that "same-layer arrangement" in the embodiments of this disclosure means that multiple structures are formed by the same material layer through a patterning process, so these structures are in the same layer in terms of stacking relationship; however, this does not mean that the distance between these structures and the substrate 10 is necessarily the same.

[0067] In some embodiments, the orthographic projection of the touch lead TXLa onto the substrate 10 and the orthographic projection of the data lead DLa onto the substrate 10 may overlap. In one example, the orthographic projection of the touch lead TXLa onto the substrate 10 and the orthographic projection of the data lead DLa onto the substrate 10 intersect.

[0068] In a specific example, the display area AA is provided with multiple gate lines GL, which intersect with multiple data lines DL, thereby defining multiple pixel areas within the display area AA. The gate lines GL extend along a second direction, while the data lines DL and touch lines TXL both extend along a first direction, which is the arrangement direction of the display area AA and the chip bonding area IA. The second direction intersects the first direction, for example, the second direction is perpendicular to the first direction. Optionally, the touch lead TXLa and the touch line TXL are arranged on the same layer, that is, the touch lead TXLa and its connected touch line TXL are a single structure. For example, the touch lead TXLa and the touch line TXL are both arranged on the same layer as the data line DL, and / or, the data lead DL is arranged on the same layer as the gate line GL.

[0069] In some examples, multiple touch electrodes 11a are disposed on the same layer, with the touch electrodes 11a located on the side of the touch line TXL away from the substrate 10, and electrically connected to the touch line TXL through vias V. To improve the reliability of the connection between the touch electrodes 11a and the touch line TXL, each touch electrode 11a can be electrically connected to the corresponding touch line TXL through multiple vias V.

[0070] In one example, the touch terminal 13 and the display data terminal 12 are both arranged on the same layer as the gate line GL, and the touch lead TXLa is electrically connected to the corresponding touch terminal 13 through a via.

[0071] Figure 4 is a schematic diagram of the chip bonding area provided in some embodiments of this disclosure. In some embodiments, each touch terminal 13 may include at least two conductive portions 131 arranged along a second direction. Each conductive portion 131 is electrically connected to a touch lead TXLa. Each conductive portion 131 in the same touch terminal 13 is electrically connected to the same touch lead TXLa, thereby being electrically connected to the same touch electrode 11a. By configuring the touch terminal 13 with a structure including multiple conductive portions 131 and electrically connecting each conductive portion 131 to a corresponding touch lead TXLa, the connection reliability between the touch terminal 13 and the touch lead TXLa can be improved, and the uniformity of the terminal pattern can be guaranteed. For example, as shown in Figure 4, each touch terminal 13 includes two conductive portions 131, thereby improving the connection reliability between the touch terminal 13 and the touch lead TXLa while preventing the touch terminal 13 from occupying a large area on the array substrate.

[0072] In some embodiments, as shown in FIG4, the array substrate further includes multiple transmission lines TL, and the touch terminal 13 is electrically connected to the corresponding input terminal 15 through the transmission lines TL. When the touch terminal 13 includes multiple conductive parts 131, the multiple conductive parts 131 in the same touch terminal 13 can be electrically connected to the corresponding input terminal 15 through the same transmission line TL. In some embodiments, the transmission line TL, the touch terminal 13, and the input terminal 15 may include conductive layers located in the same layer. For example, the transmission line TL includes at least a first conductive layer, the touch terminal 13 includes at least a second conductive layer, and the input terminal 15 includes at least a third conductive layer, and the first conductive layer, the second conductive layer, and the third conductive layer are disposed in the same layer. In one example, the first conductive layer, the second conductive layer, and the third conductive layer are all made of metal. In one example, the touch terminal 13 may include a second conductive layer and a second protective layer located on the side of the second conductive layer away from the substrate 10, and the input terminal 15 may include a third conductive layer and a third protective layer located on the side of the third conductive layer away from the substrate 10. The second protective layer and the third protective layer may be disposed in the same layer. For example, both the second protective layer and the third protective layer are made of transparent conductive materials such as indium tin oxide (ITO).

[0073] In some embodiments, as shown in FIG4, the array substrate further includes a test circuit 40, which is located between a plurality of display data terminals 12 and a plurality of touch terminals 13. The test circuit 40 is electrically connected to the touch electrode 11a and is used to provide test signals to the touch electrode 11a.

[0074] For example, the test circuit 40 can be electrically connected to the touch lead TXLa, thereby providing a test signal to the touch electrode 11a through the touch lead TXLa and the connected touch line TXL. The test circuit 40 is used to test the touch electrode 11a to determine if it is malfunctioning. Placing the test circuit 40 between the plurality of display data terminals 12 and the plurality of touch terminals 13 fully utilizes the space of the chip bonding area IA without requiring additional space. In some embodiments, the test circuit 40 includes a transistor switch.

[0075] In some embodiments, the array substrate can be used in small-sized products. In this case, the number of touch electrodes 11a is small and the number of touch terminals 13 is small. At this time, multiple touch terminals 13 can be arranged in a row. Specifically, as shown in FIG4, multiple touch terminals 13 are arranged along the second direction.

[0076] In one example, the display area AA has a size of 21.696 mm in the first direction and a size of 10.8 mm in the second direction; the display area AA is provided with 8 touch electrodes 11a, each of which has a size of 5.424 mm in the first direction and a size of 5.4 mm in the second direction.

[0077] In some embodiments, as shown in FIG4, multiple display data terminals 12 can be arranged in multiple rows along a first direction. FIG4 illustrates two rows as an example, and each row includes multiple display data terminals 12 arranged along a second direction. The display data terminals 12 of adjacent rows are staggered, which can reduce the bending of the data leads DLa connected to the row of display data terminals 12 far from the display area AA, making the wiring easier and improving product stability.

[0078] In some embodiments, as shown in FIG4, the chip bonding area IA is further provided with a plurality of first power supply terminals 17 for bonding and connecting with the driver chip, and the circuit board bonding area BA is further provided with a plurality of second power supply terminals 18 for bonding and connecting with the flexible circuit board 30. Each first power supply terminal 17 is electrically connected to one second power supply terminal 18. For example, the plurality of first power supply terminals 17 include a first common voltage terminal 171 and a plurality of first power supply terminals 172, and the plurality of second power supply terminals 18 include a second common voltage terminal 181 and a plurality of second power supply terminals 182. The first common voltage terminal 171 is electrically connected to the second common voltage terminal 181 to transmit a common voltage signal. Each first power supply terminal 172 is electrically connected to one second power supply terminal 182, and the plurality of second power supply terminals 182 are used to transmit power signals such as high-level voltage, low-level voltage, and ground voltage transmitted by the flexible circuit board, as well as signals related to the content of the display screen, to the first power supply terminal 172, thereby providing them to the driver chip.

[0079] In some embodiments, a plurality of first power supply terminals 17 and a plurality of touch terminals 13 are arranged along a second direction, and a first redundant terminal 191 is provided between the first power supply terminals 17 and the touch terminals 13. And / or, a plurality of second power supply terminals 18 and a plurality of input terminals 15 are arranged along a second direction, and a second redundant terminal 192 is provided between the second power supply terminals 18 and the input terminals 15.

[0080] The plurality of first power supply terminals 17 and the plurality of second power supply terminals 18 can transmit display driving signals. As described above, when the array substrate is used in a touch display device, the driving chip outputs a touch driving signal to the touch terminal 13 during the touch phase. This touch driving signal is a high-frequency square wave. Therefore, during the touch phase, both the touch terminal 13 and the input terminal 15 are loaded with high-frequency square wave signals. In this embodiment of the present disclosure, by providing a first redundant terminal 191 between the touch terminal 13 and the first power supply terminal 17, interference from surrounding signals can be prevented on the high-frequency signal of the touch terminal 13; by providing a second redundant terminal 192 between the input terminal 15 and the second power supply terminal 18, interference from surrounding signals can be prevented on the high-frequency signal of the input terminal 15.

[0081] In some examples, a first redundant terminal 191 may be provided between the touch terminal 13 and the first power supply terminal 17, and a second redundant terminal 192 may be provided between the input terminal 15 and the second power supply terminal 18.

[0082] For example, multiple touch terminals 13 are arranged continuously in the second direction, and first power supply terminals 17 are provided on both sides of the multiple touch terminals 13 in the second direction. A first redundant terminal 191 is provided between the multiple touch terminals 13 and the first power supply terminal 17 on each side. Correspondingly, multiple input terminals 15 are arranged continuously in the second direction, and second power supply terminals 18 are provided on both sides of the multiple input terminals 15 in the second direction. A second redundant terminal 192 is provided between the multiple input terminals 15 and the second power supply terminal 18 on each side.

[0083] This disclosure also provides a display device, which can be a pure display device or a touch display device. Figure 5 is a schematic diagram of a pure display device provided in some embodiments of this disclosure, and Figure 6 is a plan view of the flexible circuit board 30 in the pure display device provided in some embodiments of this disclosure. Figure 7 is a schematic diagram of a touch display device provided in some embodiments, and Figure 8 is a plan view of the flexible circuit board 30 in the touch display device provided in some embodiments of this disclosure. As shown in Figures 5 to 8, the display device includes the array substrate of any of the above embodiments, and further includes a flexible circuit board 30 electrically connected to the array substrate. The flexible circuit board 30 has a plurality of first bonding terminals 31; the first bonding terminals 31 are electrically connected to input terminals 15. For example, the first bonding terminals 31 and input terminals 15 are connected in a one-to-one correspondence.

[0084] In some embodiments, the display device is a pure display device. As shown in FIG6, the flexible circuit board 30 also has a shorting trace 35, which electrically connects the first bonding terminal 31 to which each input terminal 15 is connected to each other, thereby ensuring that each input terminal 15 receives the same signal, and further ensuring that each touch electrode 11a receives the same signal as a common electrode 11.

[0085] In some embodiments, as shown in FIG4, the chip bonding area IA of the array substrate is further provided with a plurality of first power supply terminals 17, including a first common voltage terminal 171 and a plurality of first power supply terminals 172; the circuit board bonding area BA is further provided with a plurality of second power supply terminals 18, including a second common voltage terminal 181 and a plurality of second power supply terminals 182. The second power supply terminals are electrically connected to the first power supply terminals 172, and the second common voltage terminal 181 is electrically connected to the first common voltage terminal 171. The flexible circuit board 30 also includes a second bonding terminal 32 and a third bonding terminal 33. The second bonding terminal 32 is electrically connected to the second common voltage terminal 181 and the shorting trace 35. The third bonding terminal 33 is electrically connected to the second power supply terminal 182.

[0086] Among them, there is a third redundant terminal 34 between the first binding terminal 31 and the second binding terminal 32, and between the first binding terminal 31 and the third binding terminal 33.

[0087] The display device also includes a display driver chip 21, which is bonded to a plurality of touch terminals 13, a plurality of display data terminals 12, and a first common voltage terminal 171. The display driver chip 21 is configured to provide data voltage signals to each display data terminal 12 and to provide a common voltage signal to the first common voltage terminal 171. Furthermore, the display driver chip 21 is in a floating state when connected to the touch terminals 13.

[0088] The first bonding terminal 31, the second bonding terminal 32, and the third bonding terminal 33 are all located at the first end of the flexible circuit board 30. The second end of the flexible circuit board 30 is used for electrical connection with the driving circuit board, as shown in Figure 6. Multiple fourth bonding terminals 36 can be provided at the second end of the flexible circuit board 30. Each third bonding terminal 33 can be electrically connected to one fourth bonding terminal 36 via a connecting line 37. The fourth bonding terminals 36 are bonded to the driving circuit board to load display driving signals. The flexible circuit board 30 can provide the display driving signals provided by the driving circuit board to the multiple third bonding terminals 33, and then transmit them to the display driving chip 21. Specifically, the display driving chip 21 is configured to provide a data voltage signal to the display data terminal 12 and a common voltage signal to the first common voltage terminal 171 according to the display driving signals. The common voltage signal of the first common voltage terminal 171 is transmitted to the flexible circuit board 30 through the second common voltage terminal 181, and then transmitted to the touch terminal 13 through the shorting trace 35 and the first bonding terminal 31 and input terminal 15 connected to the shorting trace 35, and then transmitted to each touch electrode 11a.

[0089] It should be noted that the display driver chip 21 has multiple output terminals, and the display driver chip 21 is bonded to each terminal on the array substrate. Specifically, the output terminals on the display driver chip 21 are bonded to the terminals on the array substrate. When the display driver chip 21 is in a floating state at the connection point with the touch terminal 13, it means that the output terminal of the display driver chip 21 connected to the touch terminal 13 does not output a signal. However, since the touch terminal 13 is electrically connected to the flexible circuit board 30 through the input terminal 15, the touch terminal 13 can receive signals from the flexible circuit board 30.

[0090] It should also be noted that Figure 6 illustrates an example where the shorting trace 35 is located at the first end of the flexible circuit board 30, meaning the shorting trace 35 is directly electrically connected to each of the first bonding electrodes 31. In other examples, each first bonding electrode 31 can be connected to a fourth bonding electrode 36, and the fourth bonding electrodes 36 connected to each first bonding electrode 31 can be connected via the shorting trace 35. In other words, each first bonding electrode 31 is indirectly connected to the shorting trace 35 via the fourth bonding electrode 36. In this case, the drive circuit board has no signal output at the location corresponding to the shorting trace 35, ensuring that a common voltage signal is transmitted on the shorting trace 35 and each of the first bonding electrodes 31.

[0091] In other embodiments, the display device is a touch display device, as shown in FIG7. The touch display device further includes a touch display driver chip 22, which is bonded and connected to a plurality of touch terminals 13 and a plurality of display data terminals 12. The touch display driver chip 22 is configured to provide a common voltage signal to each touch terminal 13 and a data voltage signal to each display data terminal 12 during the display phase; and to provide a touch driving signal to each touch terminal 13 during the touch phase.

[0092] Similar to the flexible circuit board 30 in Figure 6, in Figure 8, the first end of the flexible circuit board 30, in addition to the first bonding terminal 31, may also have a second bonding terminal 32 and a third bonding terminal 33. The second bonding terminal 32 is electrically connected to the second common voltage terminal 181, and the third bonding terminal 33 is electrically connected to the second power supply terminal 182. The second end of the flexible circuit board 30 has a fourth bonding terminal 36. The flexible circuit board 30 can provide the display driving signal provided by the driving circuit board to the multiple third bonding terminals 33, and then transmit it to the touch display driver chip 22. During the display phase, the touch display driver chip 22 provides a data voltage signal to the display data terminal 12 according to the display driving signal. Unlike Figure 6, in Figure 8, the first bonding terminals 31 of the flexible circuit board 30 are insulated from each other to ensure that the touch terminals 13 are insulated from each other. In this case, even if the touch display driver chip 22 provides a common voltage signal to the first common voltage terminal 171 during the display phase, it will not affect the touch process or the display process.

[0093] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. An array substrate having a display area, a chip bonding area, and a circuit board bonding area, wherein the chip bonding area is located on one side of the display area, and the circuit board bonding area is located on the side of the chip bonding area away from the display area; wherein, The array substrate includes: Substrate; Multiple touch electrodes and multiple data lines are disposed on the substrate and located in the display area; Multiple input terminals are located in the circuit board bonding area and are used for bonding and connecting with the flexible circuit board. The device includes multiple display data terminals and multiple touch terminals, which are located in the chip bonding area for bonding and connection with the driver chip. The multiple touch terminals are located on the side of the multiple display data terminals away from the display area. The display data terminals are connected to the data line, and the touch terminals are electrically connected to the touch electrode and the input terminal.

2. The array substrate according to claim 1, wherein, The array substrate further includes: Multiple touch lines are located in the display area, and the touch lines are electrically connected to the touch electrodes; Multiple touch leads are connected between the touch lines and the touch terminals; Multiple data leads are connected between the data line and the display data terminal.

3. The array substrate according to claim 2, wherein, The touch lead and the data lead are located on different layers, and the orthographic projection of the touch lead on the substrate overlaps with the orthographic projection of the data lead on the substrate.

4. The array substrate according to claim 2, wherein, The touch lead and the touch line are arranged in the same layer.

5. The array substrate according to claim 2, wherein, The display area is also provided with a grid line, and the touch lead and the touch line are both arranged on the same layer as the data line, and / or the data lead is arranged on the same layer as the grid line.

6. The array substrate according to claim 4 or 5, wherein, The touch leads and the data leads are located on different layers.

7. The array substrate according to any one of claims 1 to 5, wherein, Each of the touch terminals is electrically connected to an input terminal via a transmission line, and the touch terminal, the transmission line, and the input terminal all include a conductive layer on the same layer.

8. The array substrate according to any one of claims 1 to 5, wherein, A test circuit is also provided between the plurality of display data terminals and the plurality of touch terminals. The test circuit is electrically connected to the touch electrodes and is used to provide test signals to the touch electrodes.

9. The array substrate according to any one of claims 1 to 5, wherein, The display area and the chip bonding area are arranged along a first direction; The plurality of touch terminals are arranged along a second direction, which intersects with the first direction.

10. The array substrate according to any one of claims 1 to 5, wherein, The display area and the chip bonding area are arranged along a first direction; the chip bonding area is further provided with a plurality of first power supply terminals for bonding and connecting with the driver chip, and the circuit board bonding area is further provided with a plurality of second power supply terminals for bonding and connecting with the flexible circuit board, and each first power supply terminal is electrically connected to one second power supply terminal; A plurality of first power supply terminals and a plurality of touch terminals are arranged along a second direction, and a first redundant terminal is provided between the first power supply terminals and the touch terminals; and / or, a plurality of second power supply terminals and a plurality of input terminals are arranged along a second direction, and a second redundant terminal is provided between the second power supply terminals and the input terminals; The second direction intersects with the first direction.

11. The array substrate according to any one of claims 1 to 5, wherein, The display area and the circuit board bonding area are arranged along a first direction; The touch terminal includes at least two conductive portions arranged along a second direction, and each conductive portion in the same touch terminal is electrically connected to the same touch electrode; the second direction intersects the first direction.

12. The array substrate according to any one of claims 2 to 5, wherein, The touch electrode is located on the side of the layer containing the touch line away from the substrate and is electrically connected to the touch line through a via.

13. A display device, comprising: The array substrate according to any one of claims 1 to 12; A flexible circuit board having a plurality of first bonding terminals; The first bonding terminal is electrically connected to the input terminal; Each of the input terminals of the array substrate is electrically connected to one of the first bonding terminals.

14. The display device according to claim 13, wherein, The flexible circuit board also has shorting traces that electrically connect each of the first bonding terminals to each other.

15. The display device according to claim 14, wherein, The chip bonding area is further provided with a plurality of first power supply terminals, the plurality of first power supply terminals including a first common voltage terminal; the circuit board bonding area is further provided with a plurality of second power supply terminals, the plurality of second power supply terminals including a second common voltage terminal, the second common voltage terminal being electrically connected to the first common voltage terminal; the flexible circuit board is further provided with a second bonding terminal, the second bonding terminal being electrically connected to the second common voltage terminal and the shorting trace; The display device further includes: The display driver chip is bonded and connected to the plurality of touch terminals, the plurality of display data terminals, and the first common voltage terminal. The display driver chip is configured to provide data voltage signals to each of the display data terminals and to provide a common voltage signal to the first common voltage terminal. The display driver chip is in a floating state when connected to the touch terminals.

16. The display device according to claim 13, wherein, The first bonding terminals of the flexible circuit board are insulated from each other.

17. The display device according to claim 16, wherein, The display device further includes: A touch display driver chip is bonded and connected to the plurality of touch terminals and the plurality of display data terminals, and is configured to provide a common voltage signal to each of the touch terminals and a data voltage signal to each of the display data terminals during the display phase; and to provide a touch driving signal to each of the touch terminals during the touch phase.

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