Display device

Abstract

The invention provides a display device. The display device comprises a display panel; a touch panel; a printed circuit board; the flexible circuit board includes: a first wiring layer including a plurality of first signal lines; a second wiring layer including a plurality of second signal lines; the second ends of the plurality of first signal lines are electrically coupled with the second ends of the plurality of second signal lines in a one-to-one correspondence manner through a plurality of via holes penetrating through the insulating layer; the plurality of via holes comprise a plurality of first via holes and a plurality of second via holes, orthographic projections of the plurality of first via holes on the substrate are arranged along a third direction from a reference position, orthographic projections of the plurality of second via holes on the substrate are arranged along a fourth direction from the reference position, and the third direction intersects with the fourth direction; the third direction and the fourth direction face the side, connected with the touch panel, of the flexible circuit board, or the third direction and the fourth direction face the side, connected with the printed circuit board, of the flexible circuit board. The space utilization rate of the flexible circuit board is improved by optimizing the arrangement of the via holes.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] In the modern electronic product manufacturing industry, Flexible Printed Circuit (FPC) plays an increasingly important role as a key connection component. Due to its unique flexibility and bendability, FPC can achieve complex wiring in a limited space, thus meeting the needs of high-density assembly and miniaturization of modern electronic products.

[0003] In the manufacturing process of touch panel (TP) products, FPC can connect sensor glass and printed circuit board assembly (PCBA) to achieve touch function. However, due to the modular design of touch screen products, TP and PCBA are often designed and manufactured by different manufacturers, resulting in the mismatch between the pin arrangement order on TP and the corresponding position on PCBA, which not only increases the difficulty of assembly, but also causes signal transmission problems, affecting the performance of the final product. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display device to solve or partially solve the above problems.

[0005] As one aspect of the present application, a display device is provided, including:

[0006] Display panel;

[0007] A touch panel is arranged on one side of the display panel in the light emitting direction, and a plurality of first pins arranged along a first direction are arranged on one side of the touch panel;

[0008] A printed circuit board, electrically coupled to the display panel and the touch panel respectively, configured to provide control signals to the display panel and the touch panel, and a plurality of second pins arranged along a second direction are provided on one side of the printed circuit board;

[0009] A flexible circuit board is configured to realize electrical coupling between the touch panel and the printed circuit board, wherein the flexible circuit board comprises a substrate, a first wiring layer, an insulating layer, and a second wiring layer which are stacked, wherein:

[0010] The first wiring layer includes a plurality of first signal lines, wherein first ends of the plurality of first signal lines are electrically coupled to the plurality of first pins;

[0011] The second wiring layer includes a plurality of second signal lines, wherein first ends of the plurality of second signal lines are electrically coupled to the plurality of second pins;

[0012] The second ends of the plurality of first signal lines are electrically coupled to the second ends of the plurality of second signal lines in a one-to-one correspondence through a plurality of vias passing through the insulating layer;

[0013] The multiple vias include multiple first vias and multiple second vias, the orthographic projections of the multiple first vias on the substrate are arranged along a third direction from a reference position, the orthographic projections of the multiple second vias on the substrate are arranged along a fourth direction from the reference position, the third direction intersects with the fourth direction, and the third direction and the fourth direction are both toward a side of the flexible circuit board connected to the touch panel, or the third direction and the fourth direction are both toward a side of the flexible circuit board connected to the printed circuit board.

[0014] Optionally, the plurality of first signal lines are parallel to each other, and each of the second signal lines includes a bending portion and a straight portion; or

[0015] The plurality of second signal lines are parallel to each other, and each of the first signal lines includes a bending portion and a straight portion.

[0016] Optionally, the plurality of first signal lines or the plurality of second signal lines include:

[0017] a first signal line group connected to the plurality of first vias and a second signal line group connected to the plurality of second vias;

[0018] The signal line connected to the first via includes at least two bends, and the signal line connected to the second via includes at most one bend.

[0019] Optionally, the signal line connected to the first via includes a first bending portion and a second bending portion and a first straight portion and a second straight portion respectively connected to both ends of the first bending portion, and a second straight portion and a third straight portion respectively connected to both ends of the second bending portion, the first straight portion is parallel to the third straight portion, the second straight portion is perpendicular to the first straight portion and the third straight portion, the first straight portion and the third straight portion extend to the same side of the second straight portion relative to the second straight portion, and one end of the third straight portion is connected to the first via.

[0020] Optionally, the signal line connected to the second via includes a first bending portion and a first straight portion and a second straight portion respectively connected to two ends of the first bending portion, the first straight portion is perpendicular to the second straight portion, and one end of the second straight portion is connected to the second via.

[0021] Optionally, the plurality of first signal lines do not intersect with each other, and the plurality of second signal lines do not intersect with each other.

[0022] Optionally, the number of the plurality of via holes is an odd number, and there is one first via hole or one second via hole disposed at the reference position; and the orthographic projections of the plurality of first via holes and the plurality of second via holes on the substrate form a triangle.

[0023] Optionally, the number of the plurality of via holes is an even number, and there is a first via hole and a second via hole disposed at the reference position; and the orthographic projections of the plurality of first via holes and the plurality of second via holes on the substrate form a trapezoid.

[0024] Optionally, the triangle is an isosceles triangle, or the trapezoid is an isosceles trapezoid.

[0025] Optionally, the flexible circuit board includes a bendable bending area, and a first flat area and a second flat area separated on both sides of the bending area, the first flat area is connected to the touch panel, and the second flat area is connected to the printed circuit board.

[0026] Optionally, the touch panel includes a sensor for detecting a touch signal; the printed circuit board includes a driver chip; and the driver chip is a gate driver chip or a source driver chip.

[0027] From the above, it can be seen that the display device provided by the present application adjusts the arrangement direction of the orthographic projections of multiple first vias and multiple second vias on the substrate so that they can be arranged along the third direction and the fourth direction respectively from the reference position, and these two directions intersect, thereby realizing the reverse connection of the first signal line and the second signal line on the flexible circuit board, and can make the flexible circuit board design more compact and improve space utilization. At the same time, this arrangement method can reduce interference and loss in signal transmission and improve the reliability of signal transmission by precisely controlling the connection of signal lines and the arrangement of vias.

[0028] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic block diagram of a display device provided in an embodiment of the present application;

[0031] Figure 2 A schematic block diagram of a flexible circuit board provided in an embodiment of the present application;

[0032] Figure 3A A schematic block diagram of another flexible circuit board provided in an embodiment of the present application;

[0033] Figure 3B A schematic block diagram of another flexible circuit board provided in an embodiment of the present application;

[0034] Figure 3C A schematic block diagram of another flexible circuit board provided in an embodiment of the present application;

[0035] Figure 3D A schematic block diagram of another flexible circuit board provided in an embodiment of the present application;

[0036] Figure 3E A schematic block diagram of another flexible circuit board provided in an embodiment of the present application;

[0037] Figure 3F A schematic block diagram of another flexible circuit board provided in an embodiment of the present application;

[0038] Figure 3G A schematic block diagram of another flexible circuit board provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0040] It should be noted that, in the embodiments of the present application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a concrete way. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meaning understood by people with ordinary skills in the field to which the present application belongs.

[0041] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates, for example, that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not directly connected to each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0043] The terms "parallel", "perpendicular" and "equal" as used in the specification and claims of this application include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement being discussed and the errors 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, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, that the difference between the two equals is less than or equal to 5% of either one.

[0044] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0045] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of the layers and the area of ​​the regions are exaggerated for clarity. Therefore, variations in the shapes relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0046] Figure 1 A schematic block diagram of a display device 100 provided in some embodiments of the present disclosure is shown.

[0047] like Figure 1 As shown, the display device 100 includes a display panel 101. In some embodiments, the display panel 101 may be an organic light emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) display panel, or other applicable display panels.

[0048] For example, the display panel 101 can be a rectangular panel, a circular panel, an elliptical panel or a polygonal panel, etc. In addition, the display panel 101 can be not only a flat panel, but also a curved panel, or even a spherical panel, etc. For example, the display panel 101 can also have a touch function, that is, the display panel 101 can be a touch display panel. For example, the display panel 101 can be applied to any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, etc. For example, the display panel 101 can be a flexible display panel, so as to meet various practical application requirements, for example, the display panel 101 can be applied to a curved screen, etc.

[0049] For the sake of clarity and simplicity, the embodiments of the present disclosure do not provide all components of the display panel 101. To achieve the basic functions of the display panel 101, those skilled in the art can provide and set other structures not shown according to specific needs, and the embodiments of the present disclosure do not limit this.

[0050] Optionally, the display panel 101 has a touch function, such as Figure 1 As shown, the display device 100 further includes a touch panel 102. The touch panel 102 is disposed on one side of the light emitting direction of the display panel 101, and a plurality of first pins arranged along a first direction are disposed on one side of the touch panel 102.

[0051] In some embodiments, the touch panel 102 can be of different types such as capacitive, resistive or acoustic wave, and each type has its own specific structural characteristics. For example, the structure of the touch panel 102 may include a substrate; a sensing electrode or sensor for detecting a touch signal; a signal transmission line connecting the sensing electrode for transmitting the touch signal; a connection port or pin for electrically coupling to an external device (such as the display panel 101 and the printed circuit board 103); and a control chip for processing the touch signal and converting it into an input signal that can be recognized by the device.

[0052] Exemplarily, the touch panel 102 may adopt a multi-layer structure, for example, a glass / glass (G+G) structure, which includes a cover glass, a sensor glass, and a substrate glass.

[0053] like Figure 1 As shown, the display device 100 further includes a printed circuit board 103. The printed circuit board 103 is electrically coupled to the display panel and the touch panel respectively, and is configured to provide control signals to the display panel and the touch panel, and a plurality of second pins arranged along a second direction are provided on one side of the printed circuit board. The printed circuit board 103 includes a driver chip. For example, the driver chip is a gate driver chip or a source driver chip.

[0054] In some embodiments, one end of the printed circuit board 103 is located on the display surface of the display panel 101 and connected to the display panel 101, and the other end is located on the back of the display panel 101. Here, the back of the display panel 101 refers to the side opposite to the display surface of the display panel 101, and the display surface is the side on which the picture is displayed, which can be called the light emitting surface.

[0055] Optionally, the printed circuit board 103 may be a chip on glass (COG) circuit board, a chip on film (COF) circuit board, or a chip on flexible material (Chip on Pi, COP) circuit board; wherein, in the display device 100 using a COP printed circuit board, the display panel and the COP circuit board may be made into an integrated structure. Here, COG, COF, and COP are three circuit packaging methods, and one of them is usually used in the display device 100 to bind with the display panel and with the flexible circuit board 104. The structure of the printed circuit board 103 is exemplarily described below using the structure of the COF circuit board as an example. The COF circuit board (i.e., the printed circuit board 103) includes a thin film circuit board body, i.e., a COF film (Film), and a driving chip is provided in the middle of the thin film circuit board body. The main board controls the driving chip on the printed circuit board 103 through the flexible circuit board 104, thereby controlling the display panel 101 to display the picture.

[0056] In some embodiments, in order to achieve electrical coupling between the touch panel 102 and the printed circuit board 103, as shown in FIG. Figure 1 As shown, the display device 100 further includes a flexible circuit board 104. The flexible circuit board 104 includes a bendable bending area, and a first flat area and a second flat area separated on both sides of the bending area. The first flat area is connected to the touch panel 102, and the second flat area is connected to the printed circuit board 103.

[0057] Exemplarily, the first flat area is located on the light emitting direction side of the display panel 101 and connected to one end of the touch panel 102 ; the second flat area is located on the back of the display panel 101 and connected to one end of the printed circuit board 103 .

[0058] Figure 2 is a schematic diagram of the structure of a flexible circuit board 104 provided in an embodiment of the present disclosure. For example, Figure 2 As shown, the flexible circuit board 104 includes a substrate 201, a first wiring layer 202, an insulating layer 203 and a second wiring layer 204 which are stacked in sequence.

[0059] Optionally, the substrate 201 is made of PI (Polyimide), which has good bending properties and can ensure the overall bending properties of the flexible circuit board 104 .

[0060] Optionally, the first wiring layer 202 and the second wiring layer 204 are made of copper and copper alloys, such as rolled copper or electrolytic copper, etc. Copper has good electrical conductivity and plasticity, and is easy to process and weld.

[0061] Optionally, the insulating layer 203 plays a role in isolating and protecting the wiring layers in the flexible circuit board 104 to prevent short circuits between them. The insulating layer 203 can be made of PI, polyester, and polyolefin, etc. These materials have good insulation properties and certain mechanical strength, thereby providing protection for the flexible circuit board 104.

[0062] In some embodiments, the first wiring layer 202 includes a plurality of first signal lines, and the first ends of the plurality of first signal lines are electrically coupled to the plurality of first pins. The second wiring layer 204 includes a plurality of second signal lines, and the first ends of the plurality of second signal lines are electrically coupled to the plurality of second pins. The second ends of the plurality of first signal lines are electrically coupled to the second ends of the plurality of second signal lines in a one-to-one correspondence through a plurality of vias passing through the insulating layer 203. The plurality of vias include a plurality of first vias and a plurality of second vias, and the orthographic projections of the plurality of first vias on the substrate 201 are arranged along a third direction from a reference position, and the orthographic projections of the plurality of second vias on the substrate 201 are arranged along a fourth direction from a reference position, and the third direction intersects with the fourth direction, and the third direction and the fourth direction are both toward the side of the flexible circuit board 104 connected to the touch panel 102, or, the third direction and the fourth direction are both toward the side of the flexible circuit board 104 connected to the printed circuit board 103.

[0063] It should be noted that if Figure 3A As shown, in an ideal state, the arrangement order of the multiple first pins and the multiple second pins is the same, that is, the pins of the touch panel 102 (top layer) are arranged in order from left to right as TX1, TX2, TX3, ..., TXn, and at the same time, the pins of the printed circuit board 103 (bottom layer) are also arranged in order from left to right as TX1, TX2, TX3, ..., TXn. A plurality of mutually parallel first signal lines vertically pass through the insulating layer 203 through vias, and are electrically coupled to a plurality of mutually parallel second signal lines in a one-to-one correspondence to achieve inter-layer connection. A plurality of first pins, a plurality of second pins, and a plurality of vias are arranged in the same direction. This routing method has simple wiring, minimal interference between signal lines, and is easy to maintain. However, in actual applications, the touch panel 102 and the printed circuit board 103 are often designed and manufactured by different manufacturers, resulting in the pin arrangement order on the touch panel 102 not matching the corresponding positions on the printed circuit board 103. Then, in the case where the arrangement order of the multiple first pins and the multiple second pins is opposite, such as Figure 3B As shown, a plurality of mutually parallel first signal lines pass vertically through the insulating layer 203 through vias, but the arrangement order changes in the bottom layer, and the arrangement order of the pins is opposite to that of the top layer, that is, the order of the pins in the bottom layer is arranged from left to right in the order of TXn, TXn-1, ..., TX2, TX1, forming a reverse order. At this time, the plurality of first pins, the plurality of second pins and the plurality of vias are still arranged in the same direction, and the signal lines on the bottom layer will intersect. At this time, the intersecting signal lines will generate electromagnetic interference, affect the integrity of the signal, and cause data errors or signal distortion. In order to avoid the intersection of signal lines, more layers are required for wiring, which increases the complexity and difficulty of the design, and also increases the manufacturing cost.

[0064] For example, in order to solve the above problem, the arrangement order of the plurality of first pins and the plurality of second pins is reversed to avoid the intersection of the signal lines on the same layer. The flexible circuit board 104 of the related art, such as Figure 3C As shown, taking the number of vias as 5 as an example, the first pins are numbered 1, 2, 3, 4, 5 from left to right, and the second pins are numbered 5, 4, 3, 2, 1 from left to right. The routing is in a step-like shape, which reduces the direct crossing between signal lines on the same layer, thereby reducing signal interference. However, this arrangement of vias will occupy more space in the Y direction, resulting in a decrease in the space utilization of the flexible circuit board 104, especially in the case of high-density wiring requirements, which is easy to cause space waste and increase the border width of the non-display area. Therefore, the present solution provides a flexible circuit board 104, such as Figure 3D As shown, by arranging vias in different directions (the third direction and the fourth direction intersect), the flexible circuit board 104 can more effectively utilize the space in the Y direction of the flexible circuit board 104 to achieve a more compact design, which is in line with the characteristics of electronic equipment pursuing miniaturization and thinness.

[0065] It should be understood that the third direction and the fourth direction are both toward the side of the flexible circuit board 104 connected to the touch panel 102 or the printed circuit board 103, ensuring that the signal lines will not intersect in the same layer. Figure 3E As shown, these intersections can cause signal interference, capacitive coupling and other problems, thus affecting the performance and stability of the circuit.

[0066] Optionally, the plurality of first signal lines are parallel to each other, and each second signal line includes a bend and a straight line, wherein the plurality of second signal lines include: a first signal line group connected to the plurality of first vias and a second signal line group connected to the plurality of second vias; the signal line connected to the first via includes at least two bends, and the signal line connected to the second via includes at most one bend. By dividing the signal lines into different groups and connecting them to specific vias, the layout of the signal lines can be better managed, crossing between signal lines can be avoided, electromagnetic interference can be reduced, and the orderliness and maintainability of the wiring can be improved.

[0067] Optionally, the plurality of second signal lines are parallel to each other, and each first signal line includes a bend and a straight line, wherein the plurality of first signal lines include: a first signal line group connected to the plurality of first vias and a second signal line group connected to the plurality of second vias; the signal line connected to the first via includes at least two bends, and the signal line connected to the second via includes at most one bend. The direction of the signal line is flexibly arranged according to the position of the via, and the limited space is fully utilized, thereby increasing the flexibility of wiring.

[0068] Further, the signal line connected to the first via includes a first bend and a second bend, and a first straight line and a second straight line connected to both ends of the first bend, and a second straight line and a third straight line connected to both ends of the second bend, respectively. The first straight line is parallel to the third straight line, and the second straight line is perpendicular to the first straight line and the third straight line. The first straight line and the third straight line extend to the same side of the second straight line relative to the second straight line, and one end of the third straight line is connected to the first via. In addition, the signal line connected to the second via includes a first bend, and a first straight line and a second straight line connected to both ends of the first bend, respectively. The first straight line is perpendicular to the second straight line, and one end of the second straight line is connected to the second via. The specific design of the straight line and the bend helps to accurately control the wiring path, making the via arrangement more compact and saving space in the Y direction of the flexible circuit board 104.

[0069] For example, Figure 3F As shown, taking the number of vias as 5 as an example, the number of vias is an odd number, and there is a first via or a second via set at the reference position; the positive projections of the first vias and the second vias on the substrate form a triangle. There is a via in the odd number of vias as a reference point, which is convenient for positioning and alignment. This arrangement helps to optimize the space utilization of the flexible circuit board 104 and improve the transmission efficiency of the signal.

[0070] The triangle may be an isosceles triangle, which can ensure uniform distribution between signal lines and further improve signal transmission quality. The symmetrical geometric shape is not only beautiful, but also can enhance the mechanical strength of the circuit board and reduce problems caused by asymmetric loads.

[0071] For example, Figure 3G As shown, taking the number of vias as 4 as an example, the number of the vias is an even number, there is a first via and a second via set at the reference position; the orthographic projections of the first vias and the second vias on the substrate form a trapezoid. This arrangement is also helpful to optimize space utilization and signal transmission efficiency.

[0072] Likewise, the trapezoid may be an isosceles trapezoid to ensure uniform and balanced distribution between signal lines, improve signal stability and reliability, and reduce manufacturing difficulty and cost.

[0073] It should be understood that the plurality of first signal lines do not intersect with each other, and the plurality of second signal lines do not intersect with each other, thereby avoiding electromagnetic interference and crosstalk between the signal lines and improving the clarity and reliability of signal transmission.

[0074] In summary, an embodiment of the present disclosure provides a display device, which adjusts the arrangement direction of the orthographic projections of multiple first vias and multiple second vias on a substrate so that they can be arranged along a third direction and a fourth direction from a reference position, respectively, and the two directions intersect, thereby realizing reverse connection of the first signal line and the second signal line on a flexible circuit board, and making the flexible circuit board design more compact and improving space utilization. At the same time, this arrangement method can reduce interference and loss in signal transmission and improve the reliability of signal transmission by precisely controlling the connection of signal lines and the arrangement of vias.

[0075] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0076] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0077] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0078] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0079] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display device, comprising: Display panel; A touch panel is arranged on one side of the display panel in the light emitting direction, and a plurality of first pins arranged along a first direction are arranged on one side of the touch panel; A printed circuit board, electrically coupled to the display panel and the touch panel respectively, configured to provide control signals to the display panel and the touch panel, and a plurality of second pins arranged along a second direction are provided on one side of the printed circuit board; A flexible circuit board is configured to realize electrical coupling between the touch panel and the printed circuit board, wherein the flexible circuit board comprises a substrate, a first wiring layer, an insulating layer, and a second wiring layer which are stacked, wherein: The first wiring layer includes a plurality of first signal lines, wherein first ends of the plurality of first signal lines are electrically coupled to the plurality of first pins; The second wiring layer includes a plurality of second signal lines, wherein first ends of the plurality of second signal lines are electrically coupled to the plurality of second pins; The second ends of the plurality of first signal lines are electrically coupled to the second ends of the plurality of second signal lines in a one-to-one correspondence through a plurality of vias passing through the insulating layer; The multiple vias include multiple first vias and multiple second vias, the orthographic projections of the multiple first vias on the substrate are arranged along a third direction from a reference position, the orthographic projections of the multiple second vias on the substrate are arranged along a fourth direction from the reference position, the third direction intersects with the fourth direction, and the third direction and the fourth direction are both toward a side of the flexible circuit board connected to the touch panel, or the third direction and the fourth direction are both toward a side of the flexible circuit board connected to the printed circuit board.

2. The display device according to claim 1, wherein: The plurality of first signal lines are parallel to each other, and each of the second signal lines includes a bending portion and a straight portion; or The plurality of second signal lines are parallel to each other, and each of the first signal lines includes a bending portion and a straight portion.

3. The display device according to claim 2, wherein: The plurality of first signal lines or the plurality of second signal lines include: a first signal line group connected to the plurality of first vias and a second signal line group connected to the plurality of second vias; The signal line connected to the first via includes at least two bends, and the signal line connected to the second via includes at most one bend.

4. The display device according to claim 3, wherein: The signal line connected to the first via includes a first bending portion and a second bending portion, a first straight portion and a second straight portion respectively connected to both ends of the first bending portion, and a second straight portion and a third straight portion respectively connected to both ends of the second bending portion, the first straight portion is parallel to the third straight portion, the second straight portion is perpendicular to the first straight portion and the third straight portion, the first straight portion and the third straight portion extend to the same side of the second straight portion relative to the second straight portion, and one end of the third straight portion is connected to the first via.

5. The display device according to claim 3, wherein: The signal line connected to the second via includes a first bending portion and a first straight portion and a second straight portion respectively connected to two ends of the first bending portion, the first straight portion is perpendicular to the second straight portion, and one end of the second straight portion is connected to the second via.

6. The display device according to any one of claims 1 to 5, wherein: The plurality of first signal lines do not intersect with each other, and the plurality of second signal lines do not intersect with each other.

7. The display device according to claim 1, wherein: The number of the plurality of via holes is an odd number, and there is one first via hole or one second via hole disposed at the reference position; the orthographic projections of the plurality of first via holes and the plurality of second via holes on the substrate form a triangle.

8. The display device according to claim 1, wherein: The number of the plurality of via holes is an even number, and there is a first via hole and a second via hole disposed at the reference position; the orthographic projections of the plurality of first via holes and the plurality of second via holes on the substrate form a trapezoid.

9. The display device according to claim 7 or 8, wherein: The triangle is an isosceles triangle, or the trapezoid is an isosceles trapezoid.

10. The display device according to claim 1, wherein: The flexible circuit board includes a bendable bending area, and a first flat area and a second flat area separated on both sides of the bending area. The first flat area is connected to the touch panel, and the second flat area is connected to the printed circuit board.

11. The display device according to claim 1, wherein: The touch panel includes a sensor for detecting a touch signal; the printed circuit board includes a driving chip; the driving chip is a gate driving chip or a source driving chip.

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