Flexible circuit board, display module and display device

Abstract

This disclosure provides a flexible circuit board, a display module, and a display device, relating to the field of display technology, for reducing the size of flexible circuit boards. The flexible circuit board includes: a first surface and a second surface disposed opposite to each other, a plurality of connecting lines, and a plurality of power lines. The plurality of connecting lines extend from the first surface to the second surface. On the first and second surfaces, the plurality of connecting lines are arranged along a first direction and all extend along a second direction, the first and second directions intersecting. The plurality of power lines are disposed on the second surface, and at least one connecting line is electrically connected to a power line. The plurality of power lines all extend along the first direction. The flexible circuit board has a plurality of routing areas arranged along the first direction, and the plurality of power lines include a plurality of groups of power lines, with each group of power lines located in one routing area.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a flexible circuit board, a display module, and a display device. Background Technology

[0002] In the field of display technology, consumer electronics circuit boards are rapidly developing towards high density, high transmission speed, flexibility and miniaturization. As a result, flexible circuit boards have become the mainstream circuit boards for electronic products. With the increasing performance, miniaturization and thinness of electronic products, the contradiction between the area space of flexible circuit boards and the assembly space of the host structure is becoming increasingly prominent.

[0003] Therefore, how to reduce the size of flexible circuit boards has become a problem to be solved in this field. Summary of the Invention

[0004] The purpose of this disclosure is to provide a flexible circuit board, a display module, and a display device for reducing the size of the flexible circuit board.

[0005] To achieve the above objectives, the embodiments of this disclosure provide the following technical solutions: On one hand, a flexible circuit board is provided, comprising a first surface and a second surface disposed opposite to each other, a plurality of connecting lines, and a plurality of power lines. The plurality of connecting lines extend from the first surface to the second surface. On the first and second surfaces, the plurality of connecting lines are arranged along a first direction and all extend along a second direction, the first and second directions intersecting. The plurality of power lines are disposed on the second surface, and at least one connecting line is electrically connected to a power line. All the plurality of power lines extend along the first direction. The flexible circuit board has multiple routing areas arranged along the first direction, and the plurality of power lines include multiple groups of power lines, with each group of power lines located in one routing area.

[0006] In the aforementioned flexible circuit board, multiple connecting lines extend from a first surface to a second surface, and these connecting lines are arranged along a first direction and all extend along a second direction. Multiple power lines are disposed on the second surface and all extend along the first direction. At least one connecting line is electrically connected to a power line. The flexible circuit board has multiple routing areas arranged along the first direction, and the multiple power lines include multiple sets of power lines, with each set of power lines located within a routing area.

[0007] Understandably, multiple routing areas are arranged along the first direction, and a set of power lines are set in one routing area. That is, along the first direction, some power lines are concentrated on one side of the flexible circuit board, and some power lines are concentrated on the other side of the flexible circuit board. After the connecting line on each side extends from the first surface to the second surface, it can be electrically connected to the power line that is close to it on that side. This eliminates the need for the power line to cross the flexible circuit board and connect to the connecting line in the first direction, which helps to reduce the overlap between the connecting line and other signal lines on the flexible circuit board, thereby improving the reliability of signal transmission within the flexible circuit board.

[0008] Furthermore, with multiple routing areas arranged along the first direction and a set of power lines set in one routing area, at least two sets of power lines can be arranged along the first direction, reducing the number of multiple power lines arranged in the second direction, thereby reducing the space occupied by multiple power lines in the second direction, and thus reducing the size of the flexible circuit board in the second direction.

[0009] In some embodiments, the plurality of trace regions include a first trace region located at the edge of the flexible circuit board along a first direction. The plurality of power lines include a first power line group, which includes electroluminescent positive power lines and electroluminescent negative power lines. Both the electroluminescent positive power lines and the electroluminescent negative power lines are located within the first trace region.

[0010] In some embodiments, the electroluminescent positive power line and the electroluminescent negative power line are arranged along a second direction. Along a first direction, the electroluminescent positive power line includes two opposing ends, and two connecting lines are electrically connected to the two ends of the electroluminescent positive power line, respectively. The electroluminescent negative power line includes two opposing ends, and two connecting lines are electrically connected to the two ends of the electroluminescent negative power line, respectively.

[0011] In some embodiments, the plurality of routing areas further include a second routing area and a third routing area, wherein the first routing area, the second routing area, and the third routing area are arranged sequentially along a first direction. The plurality of power lines further include a second power line and a third power line. The second power line is located in the second routing area, and the third power line is located in the third routing area.

[0012] In some embodiments, both the second set of power lines and the third set of power lines are electrically connected to multiple connection lines.

[0013] In some embodiments, the second set of power lines includes analog circuit voltage lines and logic circuit voltage lines. The third set of power lines includes digital interface voltage lines and digital power supply voltage lines.

[0014] In some embodiments, along the second direction, the first set of power lines is interleaved with the second set of power lines and the third set of power lines.

[0015] In some embodiments, the flexible circuit board further includes a plurality of pads, each pad being electrically connected to a connecting line. Along a second direction, the flexible circuit board has opposing first and second ends. The plurality of pads are disposed on the side of the first surface near the first end, and the plurality of power lines are disposed on the side of the second surface near the second end.

[0016] On the other hand, a display module is provided, comprising: a flexible circuit board as described in any of the above embodiments, and a display panel. The flexible circuit board further includes a plurality of pads, one pad being electrically connected to a connection line. The display panel has a display area and a bonding area located on at least one side of the display area. The display panel includes a plurality of power signal lines and a plurality of pins, all of which are located in the bonding area. The plurality of power signal lines extend from the display area to the bonding area, and one power signal line is electrically connected to one pin. The pins of the display panel are electrically connected to the pads of the flexible circuit board.

[0017] On the other hand, a display device is provided, comprising: a display module as described in the above embodiments, and a circuit board. The circuit board is electrically connected to the display module.

[0018] The above-described display module and display device have the same structure and beneficial technical effects as the flexible circuit board provided in some of the above embodiments, and will not be described again here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual process of the method, etc. involved in the embodiments of this disclosure.

[0020] Figure 1 This is a structural diagram of a flexible circuit board according to some embodiments; Figure 2 for Figure 1 Right view of the flexible circuit board in the image; Figure 3 for Figure 1 Left view of the flexible circuit board in the image; Figure 4 This is a structural diagram of a display module according to some embodiments; Figure 5 This is a structural diagram of a display device according to some embodiments. Detailed Implementation

[0021] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0022] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0023] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0024] In describing some embodiments, the terms "coupled" and "connected" and their derivative expressions may be used. The term "connected" should be interpreted broadly; for example, "connected" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0025] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0026] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0027] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0028] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0029] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0030] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion 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, where an acceptable deviation range for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0031] 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.

[0032] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0033] In related technologies, the main methods to reduce the area of ​​flexible printed circuit boards (FPCs) are high-density traces on the FPC or increasing the number of FPC layers. The aforementioned high-density traces have currently been optimized to a line width of 0.05mm to match 30mA~50mA current, with the narrowest line width at 0.05mm, reaching the limit of FPC processing capabilities, leaving little room for improvement. Increasing the number of FPC layers can reduce the lateral design area of ​​the FPC, but the increased thickness of multi-layer FPCs leads to a larger volume, encroaching on the space of the main battery, and still conflicting with the assembly space of the main unit structure. Furthermore, it is very detrimental to product thinning and miniaturization.

[0034] Therefore, to solve at least one of the above problems, in one aspect, embodiments of this disclosure provide a flexible circuit board. Figure 1 This is a structural diagram of a flexible circuit board according to some embodiments; Figure 2 for Figure 1 Right view of the flexible circuit board in the image; Figure 3 for Figure 1 Left view of the flexible circuit board in the image.

[0035] See Figures 1-3 The flexible circuit board 10 includes a first surface 101 and a second surface 102 disposed opposite to each other, multiple connecting lines 1 and multiple power lines 2.

[0036] See Figure 2 Multiple connecting lines 1 extend from the first surface 101 to the second surface 102. On the first surface 101 and the second surface 102, the multiple connecting lines 1 are arranged along the first direction X and all extend along the second direction Y, with the first direction X and the second direction Y intersecting. For example, the embodiments of this disclosure are illustrated using the example where the first direction X and the second direction Y are perpendicular.

[0037] For example, among the multiple connecting lines 1, some connecting lines 1 can transmit the same electrical signal, while some connecting lines 1 can transmit different electrical signals.

[0038] For example, multiple connecting lines 1 bend and extend from the first surface 101 to the second surface 102. At the bend of the connecting lines 1, a protective layer can be provided on the outside of the connecting lines 1 to protect the connecting lines 1, improve the corrosion resistance of the connecting lines 1, and thus improve the reliability of the connecting lines 1.

[0039] See Figure 3 Multiple power lines 2 are disposed on the second surface 102, and at least one connecting line 1 is electrically connected to the power lines 2. All power lines 2 extend along the first direction X.

[0040] For example, connection line 1 transmitting the same electrical signal is electrically connected to the same power line 2, and connection line 1 transmitting different electrical signals is electrically connected to different power lines 2.

[0041] For example, connecting cable 1 can be electrically connected to the power signal line in the display panel to transmit different power signals. Power cable 2 is electrically connected to the aforementioned power signal line through connecting cable 1 to achieve the transmission of different power signals.

[0042] In related technologies, multiple power lines are routed in a high-density manner on the second surface of the flexible circuit board. That is, multiple power lines extend along the X direction and are arranged along the Y direction, resulting in a larger size of the flexible circuit board in the Y direction. Alternatively, related technologies increase the number of layers in the flexible circuit board, thereby increasing the number of traces on the flexible circuit board and increasing the thickness of the flexible circuit board in the Z direction.

[0043] It is understood that in this disclosure, the connecting line 1 extends along the second direction Y, and the power line 2 extends along the first direction X, with the connecting line 1 and the power line 2 extending in different directions. When the connecting line 1 extends from the first surface 101 to the second surface 102, the connecting line 1 can be directly electrically connected to the adjacent power line 2, which helps to shorten the length of the connecting line 1 in the second direction Y, thereby reducing the space occupied by the connecting line 1 on the flexible circuit board 10, reducing the size of the flexible circuit board 10 in the second direction Y, and facilitating the miniaturization of the subsequent display module.

[0044] Furthermore, multiple connecting lines 1 extend along the second direction Y, and multiple power lines 2 extend along the first direction X. By dividing the multiple power lines 2 into regions, the number of traces on the flexible circuit board 10 can be increased without increasing the number of traces by increasing the number of layers of the flexible circuit board 10. This reduces the thickness of the flexible circuit board 10 in the Z direction, which is beneficial for achieving the thinning of the subsequent display module.

[0045] See also Figure 3 The flexible circuit board 10 has multiple trace areas 3 arranged along a first direction X, and multiple power lines 2 include multiple groups of power lines 2, with one group of power lines 2 located in a trace area 3.

[0046] For example, the flexible circuit board 10 may have at least two trace regions 3 arranged along a first direction X. Multiple sets of power lines 2 may include at least two sets, wherein one set of power lines 2 is disposed within one trace region 3.

[0047] It is understandable that, along the first direction X, at least two sets of power lines 2 are located in different routing areas 3, that is, at least two sets of power lines 2 are arranged along the first direction X, thereby reducing the orientation of the flexible circuit board 10 in the second direction Y.

[0048] In the aforementioned flexible circuit board 10, multiple connecting lines 1 extend from the first surface 101 to the second surface 102 of the flexible circuit board 10, and the multiple connecting lines 1 are arranged along a first direction X and all extend along a second direction Y. Multiple power lines 2 are disposed on the second surface 102 and all extend along the first direction X. At least one connecting line 1 is electrically connected to a power line 2. The flexible circuit board 10 has multiple routing areas 3 arranged along the first direction X, and the multiple power lines 2 include multiple groups of power lines 2, with each group of power lines 2 located in a routing area 3.

[0049] It is understandable that multiple routing areas 3 are arranged along the first direction X, and a group of power lines 2 are set in one routing area 3. That is, along the first direction X, some power lines 2 are concentrated on one side of the flexible circuit board 10, and some power lines 2 are concentrated on the other side of the flexible circuit board 10. After the connecting line 1 on each side extends from the first surface 101 to the second surface 102, it can be electrically connected to the power line 2 that is close to it on that side. This eliminates the need for the power line 2 to cross the flexible circuit board 10 in the first direction X to be electrically connected to the connecting line 1. This helps to reduce the overlap between the connecting line 1 and other signal lines on the flexible circuit board 10, thereby improving the reliability of signal transmission within the flexible circuit board 10.

[0050] Furthermore, multiple wiring areas 3 are arranged along the first direction X, and a set of power lines 2 is set in one wiring area 3. Then at least two sets of power lines 2 can be arranged along the first direction X, which reduces the number of multiple power lines 2 arranged in the second direction Y, thereby reducing the space occupied by multiple power lines 2 in the second direction Y, and thus reducing the size of the flexible circuit board 10 in the second direction Y.

[0051] In some embodiments, see Figure 3 The plurality of trace regions 3 include a first trace region 31, which is located at the edge of the flexible circuit board 10 along a first direction X. For example, along the first direction X, the flexible circuit board 10 has a left edge and a right edge. The first trace region 31 may be located at the left edge of the flexible circuit board 10, or it may be located at the right edge of the flexible circuit board 10. The embodiments of this disclosure illustrate this by taking the example of the first trace region 31 being located at the left edge of the flexible circuit board 10.

[0052] The multiple power lines 2 include a first power line 21, which includes an electroluminescent positive power line (ELVDD) 211 and an electroluminescent negative power line (ELVSS) 212. Both the electroluminescent positive power line 211 and the electroluminescent negative power line 212 are located in the first wiring area 31.

[0053] For example, the electroluminescent positive power supply line 211 can supply power to the anode of the pixel driving circuit in the display panel, and the electroluminescent negative power supply line 212 can supply power to the cathode of the pixel driving circuit in the display panel, thereby providing driving current to the transistors in the display panel and causing the transistors to emit light.

[0054] For example, see [link to previous article] Figure 3 The electroluminescent positive power supply line 211 and the electroluminescent negative power supply line 212 can be arranged along the first direction X, or they can also be arranged along the second direction Y. The embodiments of this disclosure are illustrated by taking the example of the electroluminescent positive power supply line 211 and the electroluminescent negative power supply line 212 extending along the first direction X and arranged along the second direction Y.

[0055] It is understood that both the electroluminescent positive power line 211 and the electroluminescent negative power line 212 are located in the first trace area 31 near the edge of the flexible circuit board 10. The connecting line 1, which is connected to the first set of power lines 21, extends from the second surface 102 and is directly electrically connected to the electroluminescent positive power line 211 and the electroluminescent negative power line 212. This eliminates the need for the electroluminescent positive power line 211 and the electroluminescent negative power line 212 to span the entire flexible circuit board 10 in the first direction X, making the electroluminescent positive power line 211 and the electroluminescent negative power line 212 shorter, and also making the connecting line 1 shorter in the second direction Y, thereby further reducing the size of the flexible circuit board 10 in the second direction Y.

[0056] In some embodiments, see Figure 3 The electroluminescent positive power line 211 and the electroluminescent negative power line 212 are arranged along the second direction Y. It can be understood that the arrangement of the electroluminescent positive power line 211 and the electroluminescent negative power line 212 along the second direction Y can reduce the size of the first trace area 31 in the first direction X, thereby helping to reduce the size of the flexible circuit board 10 in the first direction X.

[0057] For example, within the first wiring area 31, only the electroluminescent positive power line 211 and the electroluminescent negative power line 212 can be provided, thereby avoiding electrical interference from other power lines 2 to the electroluminescent positive power line 211 and the electroluminescent negative power line 212.

[0058] See also Figure 3Along the first direction X, the electroluminescent positive power supply line 211 includes two opposing ends A, and two connecting lines 1 are electrically connected to the two ends A of the electroluminescent positive power supply line 211 respectively. The electroluminescent negative power supply line 212 includes two opposing ends B, and two connecting lines 1 are electrically connected to the two ends B of the electroluminescent negative power supply line 212 respectively.

[0059] For example, the two ends A of the electroluminescent positive power supply line 211 can be a first left end A1 and a first right end A2, respectively, with a connecting line 1 electrically connected to the first left end A1 and a connecting line 1 electrically connected to the first right end A2. The two ends B of the electroluminescent negative power supply line 212 can be a second left end B1 and a second right end B2, respectively, with a connecting line 1 electrically connected to the second left end B1 and a connecting line 1 electrically connected to the second right end B2.

[0060] It is understandable that connecting wire 1 is connected to the ends of electroluminescent positive power supply line 211 and electroluminescent negative power supply line 212, which can make the current distribution inside electroluminescent positive power supply line 211 and electroluminescent negative power supply line 212 more uniform, thereby improving the power supply reliability of electroluminescent positive power supply line 211 and electroluminescent negative power supply line 212.

[0061] In some embodiments, see Figure 3 The multiple routing areas 3 also include a second routing area 32 and a third routing area 33, arranged sequentially along the first direction X. The multiple power lines 2 also include a second power line 22 and a third power line 23. The second power line 22 is located in the second routing area 32, and the third power line 23 is located in the third routing area 33.

[0062] For example, the first set of power lines 21, the second set of power lines 22, and the third set of power lines 23 transmit different power signals respectively.

[0063] For example, the second set of power lines 22 may include one power line 2 or multiple power lines 2. When the second set of power lines 22 includes multiple power lines 2, the multiple power lines 2 can be arranged along the second direction Y within the second wiring area 32, thereby reducing the size of the second wiring area 32 in the first direction X, which in turn helps to reduce the size of the flexible circuit board 10 in the first direction X.

[0064] For example, the third group of power lines 23 may include one power line 2 or multiple power lines 2. When the third group of power lines 23 includes multiple power lines 2, the multiple power lines 2 may be arranged along the second direction Y within the third wiring area 33, thereby reducing the size of the third wiring area 33 in the first direction X, which in turn helps to reduce the size of the flexible circuit board 10 in the first direction X.

[0065] It is understandable that multiple trace areas 3 can be divided along the first direction X into a first trace area 31, a second trace area 32, and a third trace area 33 arranged sequentially. The multiple power lines 2 on the flexible circuit board 10 are divided into three groups, namely the first group of power lines 21, the second group of power lines 22, and the third group of power lines 23. The above three groups of power lines 2 are respectively arranged in the three trace areas 3, so that the above three groups of power lines 2 can be arranged along the first direction X, thereby further reducing the number of multiple power lines 2 arranged in the second direction Y, thereby reducing the space occupied by multiple power lines 2 in the second direction Y, and further reducing the size of the flexible circuit board 10 in the second direction Y.

[0066] In some embodiments, see Figure 3 The second set of power cords 22 and the third set of power cords 23 are both electrically connected to multiple connecting wires 1.

[0067] The embodiments of this disclosure do not limit the number of connecting wires 1 electrically connected to the second group of power lines 22 and the third group of power lines 23. For example, one power line 2 in the second group of power lines 22 may be electrically connected to two, three, four, or five connecting wires 1. One power line 2 in the third group of power lines 23 may be electrically connected to two, three, four, or five connecting wires 1.

[0068] For example, in the second group of power cords 22, one power cord 2 is electrically connected to four connecting cords 1. In the third group of power cords 23, one power cord 2 is electrically connected to four connecting cords 1.

[0069] Understandably, by electrically connecting both the second group of power lines 22 and the third group of power lines 23 to multiple connecting lines 1, the reliability of the electrical connection between connecting line 1 and the second group of power lines 22, as well as the reliability of the electrical connection between connecting line 1 and the third group of power lines 23, can be improved. Furthermore, the arrangement of connecting multiple connecting lines 1 to the second group of power lines 22 and the third group of power lines 23 respectively also facilitates impedance matching optimization, improves voltage stability, and thus enhances the electrical performance and reliability of the flexible circuit board 10.

[0070] In some embodiments, see Figure 3The second set of power lines 22 includes analog circuit voltage lines (ACVV) 221 and logic circuit voltage lines (VCI) 222. The third set of power lines 23 includes digital interface voltage lines (VDDI) 231 and digital power supply voltage lines (DVDD) 232.

[0071] For example, analog circuit voltage line 221 can provide voltage to the analog circuit of the display panel, and logic circuit voltage line 222 can provide voltage to the logic circuit of the display panel. Digital interface voltage line 231 can provide voltage to the digital interface circuit of the display panel, and digital power supply voltage line 232 can provide voltage to the digital logic and timing control circuit of the driver chip of the display panel.

[0072] Understandably, by setting up the above, the multiple power lines 2 are divided into three groups and placed in three routing areas 3 respectively. In the second direction Y, the number of power lines 2 is reduced, thereby reducing the overlap between the connecting line 1 and the power line 2, thus reducing the possibility of crosstalk between different power signals and improving the reliability of the flexible circuit board 10.

[0073] For example, see Figure 3 Compared with related technologies, the technical solution provided in this disclosure significantly reduces the extension length of the horizontal power line 2 in the first direction X, and reduces the space occupied by multiple power lines 2 arranged in the second direction Y, which can reduce the area of ​​the flexible circuit board 10 by about 10% to 15% in the second direction Y.

[0074] For example, in the process of applying the flexible circuit board 10 to the display module, by compressing the area design space of the flexible circuit board 10, the size of the flexible circuit board 10 can be reduced, which is conducive to the thinning and miniaturization of the display module.

[0075] For example, the distribution position of the power signal lines corresponding to the display panel can be adjusted according to the different exit positions of the power lines 2, so as to always maintain the connection of multiple power lines 2 in the horizontal (first direction X) routing on both sides, thereby reducing the vertical (second direction Y) dimension of the flexible circuit board 10.

[0076] In some embodiments, see Figure 3 Along the second direction Y, the first group of power lines 21, the second group of power lines 22, and the third group of power lines 23 are all staggered.

[0077] Understandably, along the second direction Y, the first group of power lines 21 and the second group of power lines 22 are staggered, maintaining a certain distance between them to prevent coupling and thus reduce the possibility of electrical crosstalk between them. Similarly, along the second direction Y, the first group of power lines 21 and the third group of power lines 23 are staggered, maintaining a certain distance between them to prevent coupling and thus reduce the possibility of electrical crosstalk between them.

[0078] Therefore, by setting the first group of power lines 21 to be staggered with the second group of power lines 22 and the third group of power lines 23, the overall stability of the multiple power lines 2 can be improved, and the electrical safety of the first group of power lines 21 can be ensured, thereby improving the reliability of the flexible circuit board 10.

[0079] In some embodiments, see Figure 1 and Figure 2 The flexible circuit board 10 also includes multiple pads 3, one of which is electrically connected to a connecting line 1.

[0080] For example, multiple pads 3 can be arranged along a first direction X. The pads 3 can be disposed on the same layer as the connecting lines 1. The pads 3 can be used to solder to pads on the display panel, thereby realizing the electrical connection between the display panel and the flexible circuit board 10.

[0081] See Figure 1 Along the second direction Y, the flexible circuit board 10 has a first end 41 and a second end 42 opposite to each other. A plurality of pads 3 are disposed on the side of the first surface 101 near the first end 41, and a plurality of power lines 2 are disposed on the side of the second surface 102 near the second end 42.

[0082] Understandably, the connecting line 1 extends from the pad 3 along the second direction Y on the first surface 101 to the second end 42, and then extends from the second end 42 to the second surface 102. Multiple power lines 2 are disposed on the side of the second surface 102 near the second end 42, thereby further shortening the length of the connecting line 1 required for electrical connection with the power lines 2, further reducing the space occupied by the connecting line 1 in the second direction Y, and thus reducing the size of the flexible circuit board 10 in the second direction Y.

[0083] Furthermore, the orthographic projections of multiple pads 3 on the first surface 101 do not overlap with the orthographic projections of multiple power lines 2 on the first surface 101, thereby further reducing the possibility of electrical interference between different power signals and thus further improving the reliability of the flexible circuit board 10.

[0084] On the other hand, embodiments of this disclosure provide a display module, Figure 4 This is a structural diagram of a display module according to some embodiments.

[0085] See Figure 4 The display module 100 includes a flexible circuit board 10 as described in any of the above embodiments, and a display panel 20. The display panel 20 is connected to a first surface 101 of the flexible circuit board 10. The flexible circuit board 10 also includes a plurality of pads 3, one pad 3 being electrically connected to a connecting line 1. The display panel 20 has a display area C and a bonding area D located on at least one side of the display area C. Exemplarily, embodiments of this disclosure are illustrated with the bonding area D located on one side of the display area C as an example.

[0086] The display panel 20 includes multiple power signal lines 200 and multiple pins 300. All pins 300 are located in the bonding area D. The power signal lines extend from the display area C to the bonding area D, and each power signal line 200 is electrically connected to one pin 300. The pins 300 of the display panel 20 are electrically connected to the pads 3 of the flexible circuit board 10.

[0087] The first surface 101 of the flexible circuit board 10 is electrically connected to the bonding area D of the display panel 20. For example, the pads 3 of the display panel 20 and the pads 3 of the flexible circuit board 10 can be electrically connected by soldering or by a connector.

[0088] Understandably, since the size of the flexible circuit board 10 has been reduced, the size of the display module 100 can also be reduced, which is conducive to the miniaturization and thinning of the display module 100.

[0089] On the other hand, embodiments of this disclosure provide a display device, Figure 5 This is a structural diagram of a display device according to some embodiments.

[0090] See Figure 5 The display device 1000 includes a display module 100 as described in the above embodiment, and a circuit board 30. The circuit board 30 is electrically connected to the display module 100.

[0091] For example, the circuit board 30 may be a printed circuit board (PCB). The display device 1000 also includes a connector 40 through which the circuit board 30 is electrically connected to the flexible circuit board 10.

[0092] It is understandable that since the size of the flexible circuit board 10 is reduced, the size of the display device 1000 can also be reduced, which is conducive to the miniaturization and thinning of the display device 1000.

[0093] The aforementioned display device 1000 can be any device that displays images, whether moving (e.g., video) or fixed (e.g., still images), and whether it contains text or images. More specifically, the embodiments described are contemplated to be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, tablets, televisions, wearable watches, virtual reality (VR) display products, mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0094] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A flexible circuit board, characterized in that, include: The first and second surfaces are set relative to each other; Multiple connecting lines extend from the first surface to the second surface; on the first surface and the second surface, the multiple connecting lines are arranged along a first direction and all extend along a second direction, the first direction and the second direction intersecting. Multiple power lines are disposed on the second surface, and at least one connecting line is electrically connected to the power lines; all the multiple power lines extend along the first direction; wherein, the flexible circuit board has multiple routing areas arranged along the first direction, and the multiple power lines include multiple groups of power lines, with one group of power lines located in one routing area.

2. The flexible circuit board according to claim 1, characterized in that, The plurality of trace areas include a first trace area, which is located at the edge of the flexible circuit board along the first direction. The multiple sets of power lines include a first set of power lines, which includes an electroluminescent positive power line and an electroluminescent negative power line; both the electroluminescent positive power line and the electroluminescent negative power line are located in the first wiring area.

3. The flexible circuit board according to claim 2, characterized in that, The electroluminescent positive power line and the electroluminescent negative power line are arranged along the second direction; Along the first direction, the electroluminescent positive power supply line includes two opposite ends, and the two connecting lines are respectively electrically connected to the two ends of the electroluminescent positive power supply line; the electroluminescent negative power supply line includes two opposite ends, and the two connecting lines are respectively electrically connected to the two ends of the electroluminescent negative power supply line.

4. The flexible circuit board according to claim 2, characterized in that, The plurality of routing areas also includes a second routing area and a third routing area, and the first routing area, the second routing area and the third routing area are arranged sequentially along the first direction; The multiple sets of power lines also include a second set of power lines and a third set of power lines; the second set of power lines is located in the second wiring area, and the third set of power lines is located in the third wiring area.

5. The flexible circuit board according to claim 4, characterized in that, Both the second group of power cords and the third group of power cords are electrically connected to the multiple connecting lines.

6. The flexible circuit board according to claim 4 or 5, characterized in that, The second group of power lines includes analog circuit voltage lines and logic circuit voltage lines; the third group of power lines includes digital interface voltage lines and digital power supply voltage lines.

7. The flexible circuit board according to claim 4, characterized in that, Along the second direction, the first group of power lines is staggered with the second group of power lines and the third group of power lines.

8. The flexible circuit board according to claim 1, characterized in that, The flexible circuit board also includes multiple pads, and each pad is electrically connected to a connecting line. Along the second direction, the flexible circuit board has opposing first and second ends; The plurality of pads are disposed on the side of the first surface near the first end, and the plurality of power lines are disposed on the side of the second surface near the second end.

9. A display module, characterized in that, include: The flexible circuit board as described in any one of claims 1 to 8; the flexible circuit board further includes a plurality of pads, each pad being electrically connected to a connecting line; The display panel has a display area and a bonding area located on at least one side of the display area; the display panel includes multiple power signal lines and multiple pins, all of which are located in the bonding area, and the multiple power signal lines extend from the display area to the bonding area, with each power signal line electrically connected to one pin. The pins of the display panel are electrically connected to the pads of the flexible circuit board.

10. A display device, characterized in that, include: The display module as described in claim 9; The circuit board is electrically connected to the display module.

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