Flexible circuit board, display module and display device

Abstract

The present invention relates to the field of display technology, and in particular to a flexible circuit board, a display module and a display device, which are used to avoid the breakage of signal lines in the flexible circuit board and ensure the normal display of the display device. A flexible circuit board, characterized in that the flexible circuit board comprises: a device setting part, a connecting part and a binding part extending along a first direction and connected in sequence along a second direction; the first direction and the second direction intersect; at least one end of the connecting part is retracted relative to the binding part and the end of the device setting part; the retracted end of the connecting part, the end of the binding part at the same end as the retracted end of the connecting part, and the end of the device setting part at the same end as the retracted end of the connecting part are arranged in a groove shape. The flexible circuit board, the display module and the display device are used for image display.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a flexible circuit board, a display module and a display device. Background Art

[0002] The display panel of the display device can be a curved display panel with a certain curvature. Compared with traditional flat-panel display devices, the display device has a larger viewing angle on both sides of the screen (such as the left and right sides), which can provide users with a better visual experience. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to prevent the signal lines in the flexible circuit board from being broken, so as to ensure the normal display of the display module and the display device to which the flexible circuit board is applied.

[0004] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0005] An embodiment of the present invention provides a flexible circuit board, the flexible circuit board comprising: a device setting portion, a connecting portion, and a binding portion extending along a first direction and connected in sequence along a second direction. The first direction and the second direction intersect. At least one end of the connecting portion is retracted relative to the end of the binding portion and the device setting portion. The retracted end of the connecting portion, the end of the binding portion at the same end as the retracted end of the connecting portion, and the end of the device setting portion at the same end as the retracted end of the connecting portion are arranged in a groove shape.

[0006] The flexible circuit board provided by some embodiments of the present invention is provided with a connecting part respectively connected to the binding part and the device setting part, and at least one end of the connecting part is retracted relative to the binding part and the device setting part, so that the retracted end of the connecting part, the end of the binding part and the retracted end of the connecting part, and the end of the device setting part and the retracted end of the connecting part are in a groove shape. In this way, when the flexible circuit board is applied to the display module, when external force is applied to the opposite sides of the display module for bending, the external force drives the flexible circuit board to bend, and the external force can be released at the above-mentioned retracted setting during the process, thereby preventing the binding position between the binding part and the display panel in the display module from peeling off or preventing the signal line on the flexible circuit board from breaking, thereby improving the stability of the binding between the display panel and the flexible circuit board, and ensuring that the display module can achieve normal function.

[0007] In some embodiments, the flexible circuit board includes a double-layer flexible circuit board.

[0008] In some embodiments, the flexible circuit board further comprises: a reinforcing plate disposed on one side of the plane where the device arrangement portion is located, wherein along the first direction, the reinforcing plate is close to an end of the inward arrangement of the connecting portion.

[0009] In some embodiments, the flexible circuit board further comprises: a chip disposed on one side of the plane where the device setting portion is located. The chip and the reinforcing plate are respectively located on opposite sides of the plane where the device setting portion is located, and the orthographic projection of the chip on the flexible circuit board is located within the range of the orthographic projection of the reinforcing plate on the flexible circuit board.

[0010] In some embodiments, the chip includes a touch control chip, and the touch control chip is configured to provide a touch control signal and receive a sensing signal.

[0011] In some embodiments, the binding portion includes a plurality of first touch pins. The device setting portion includes a plurality of touch traces. One end of the plurality of touch traces is bound to the touch chip, and the other ends of the plurality of touch traces are electrically connected to the plurality of first touch pins respectively.

[0012] In some embodiments, at least one of the first touch pins is provided at the end of the binding portion that is the same as the retracted end of the connecting portion, and along the first direction, the connecting portion is retracted inward by a preset dimension relative to the binding portion; the preset dimension is set to be the dimension of the area occupied by at least one of the first touch pins in the first direction.

[0013] In some embodiments, the flexible circuit board further comprises: a data chip disposed on one side of the plane where the device setting portion is located. The data chip and the touch chip are located on the same side of the device setting portion. The data chip is configured to provide a data signal.

[0014] In some embodiments, the binding unit further includes a plurality of first data pins. The device setting unit further includes a plurality of data wires. One end of the plurality of data wires is bound to the data chip, and the other end of the plurality of data wires is electrically connected to the plurality of first data pins respectively.

[0015] In some embodiments, the double-layer flexible circuit board includes: a first functional layer, a second functional layer, and a base layer disposed between the first functional layer and the second functional layer.

[0016] An embodiment of the present invention further provides a display module, the display module comprising: a display panel, and a flexible circuit board as described in any one of the above embodiments and bound to the display panel. The display panel comprises a main body, and bending portions arranged at opposite ends of the main body along a first direction and extending along a second direction; an angle is formed between the two bending portions and the main body.

[0017] The beneficial effects that can be achieved by the display module provided in some embodiments of the present invention are the same as the beneficial effects that can be achieved by the flexible circuit board provided in some of the above embodiments, and will not be described in detail here.

[0018] In some embodiments, the display panel includes a touch structure. The touch structure includes: a first touch electrode layer, a second touch electrode layer and a plurality of touch signal lines. The first touch electrode layer includes: a plurality of first touch electrodes arranged along a first direction. The second touch electrode layer includes: a plurality of second touch electrodes arranged along a second direction. One end of the plurality of touch signal lines is electrically connected to the plurality of first touch electrodes and the plurality of second touch electrodes respectively; the other end of the plurality of touch signal lines is electrically connected to the touch chip of the flexible circuit board.

[0019] In some embodiments, the display panel has a binding area. The display panel further includes a plurality of second touch pins disposed in the binding area. The plurality of second touch pins are respectively electrically connected to the other ends of the plurality of touch signal lines and are respectively bound to the plurality of first touch pins of the flexible circuit board.

[0020] In some embodiments, the display panel further includes a plurality of second data pins disposed in the binding area. The display panel further includes a plurality of data lines. The plurality of second data pins are respectively electrically connected to one end of the plurality of data lines and are respectively bound to the plurality of first data pins of the flexible circuit board.

[0021] An embodiment of the present invention further provides a display device, which includes: a display module as described in any one of the above embodiments.

[0022] The beneficial effects that can be achieved by the display device provided in some embodiments of the present invention are the same as the beneficial effects that can be achieved by the flexible circuit board provided in some of the above embodiments, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention, the following briefly introduces the drawings required to be used in some embodiments of the present invention. Obviously, the drawings described below are only drawings of some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the products involved in the embodiments of the present invention.

[0024] Figure 1 A schematic diagram of bubbles appearing locally on a flexible circuit board in the related art;

[0025] Figure 2is a structural diagram of a display device according to some embodiments of the present invention;

[0026] Figure 3 is a structural diagram of a display module according to some embodiments of the present invention;

[0027] Figure 4 is a structural diagram of a display panel according to some embodiments of the present invention;

[0028] Figure 5 is a structural diagram of another display panel according to some embodiments of the present invention;

[0029] Figure 6 is a structural diagram of a flexible circuit board according to some embodiments of the present invention;

[0030] Figure 7 is a structural diagram of another flexible circuit board according to some embodiments of the present invention;

[0031] Figure 8 is a structural diagram of another flexible circuit board according to some embodiments of the present invention;

[0032] Fig. 9 is a structural diagram of another flexible circuit board according to some embodiments of the present invention;

[0033] Fig.10 FIG. 4 is a structural diagram of yet another flexible circuit board according to some embodiments of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0035] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present invention. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0036] When describing some embodiments, the term "connected" and its derivative expressions may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0037] 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 layers and regions are exaggerated for clarity. Therefore, variations in shape 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 shape of regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0038] Some embodiments of the present invention provide a display device 2000, such as Figure 2 As shown, the display device 2000 includes: a display module 1000 .

[0039] In some examples, the display device 2000 may be, for example, an LCD (Liquid Crystal Display) device, an OLED (Organic Light Emitting Diode) display device, a MicroLED (Micro Light Emitting Diode) display device, or a Mini LED (Mini Light Emitting Diode) display device. The display device may also be a product or component with any display function, such as a monitor, a television, a digital camera, a mobile phone, a tablet computer, or the like.

[0040] For the convenience of description, the present invention is described by taking the display device 2000 as an OLED display device as an example.

[0041] Exemplarily, the display device 2000 further includes: a cover plate covering one side of the display module 1000 .

[0042] For example, the cover plate may be a 3D glass cover plate, which can protect the display module 1000 from external damage.

[0043] In some embodiments, the display module 1000 is Figure 3 As shown, the display module 1000 includes: a display panel 2.

[0044] In some examples, the display panel 2 may be a flexible display panel, for example, an AMOLED (Active-Matrix Organic Light Emitting Diode) display panel.

[0045] In some examples, such as Figure 5 As shown, the display panel 2 may have a display area 26 .

[0046] Exemplarily, the display panel 2 may include: a substrate, and a plurality of data lines 25 disposed on the substrate and located in the display area 26. The plurality of data lines 25 may extend along the second direction Y.

[0047] Exemplarily, the display panel 2 may further include: a plurality of pixel driving circuits disposed on the substrate and located in the display area 26, and a plurality of light emitting devices disposed on a side of the plurality of pixel driving circuits away from the substrate. The plurality of pixel driving circuits and the plurality of light emitting devices may be electrically connected, for example, one-to-one.

[0048] For example, the plurality of pixel driving circuits may be arranged into a plurality of columns along the first direction X, and may be arranged into a plurality of rows along the second direction Y. One data line 25 may be electrically connected to one column of pixel driving circuits.

[0049] Exemplarily, the plurality of data lines 25 transmit data signals to the corresponding pixel driving circuits respectively. The pixel driving circuit can generate a driving signal according to the data signal (of course, not limited to the data signal), and each light emitting device can emit light under the action of the driving signal provided by the corresponding pixel driving circuit, and the light emitted by the plurality of light emitting devices cooperates with each other, so that the display panel 2 realizes the display function.

[0050] Exemplarily, the first direction X intersects with the second direction Y. For example, Figure 3 As shown, the first direction X and the second direction Y may be perpendicular to each other.

[0051] In some examples, such as Figure 5 As shown, the display panel 2 includes a main body 21 and bending portions 22 disposed at opposite ends of the main body 21 along a first direction X and extending along a second direction Y. An angle is formed between the two bending portions 22 and the main body 21. The main body 21 and the two bending portions 22 are an integral structure.

[0052] Exemplarily, a part of the plurality of pixel driving circuits may be located in the main body 21 , and another part may be located in the two bending parts 22 . A part of the plurality of light emitting devices may be located in the main body 21 , and another part may be located in the two bending parts 22 .

[0053] Exemplarily, the two bending portions 22 may be bent toward the same side of the main body 21. For example, the two bending portions 22 may be bent toward the non-light-emitting side of the main body 21.

[0054] For example, the included angles between the two bending portions 22 and the main body portion 21 may be the same.

[0055] For example, Figure 4 As shown, the two bending portions 22 may be arc-shaped, and the main body portion 21 may be flat.

[0056] When the bending portion 22 is in an arc shape, the edge of the display panel 2 can be made smoother, thereby protecting the display panel 2 to a certain extent and preventing the display panel 2 from being easily damaged due to its sharp edge.

[0057] In some embodiments, Figure 3 As shown, the display module 1000 further includes: a flexible circuit board 1. The flexible circuit board 1 is bound to the display panel 2.

[0058] Exemplarily, the flexible circuit board 1 can provide data signals and the like to the display panel 2 so that the display module 1000 can realize the display function.

[0059] For example, Figure 3 and Figure 5 As shown, the display panel 2 may have a binding area 24. The portion of the display panel 2 located in the binding area 24 may be bound to the flexible circuit board 1, and further may receive data signals etc. from the flexible circuit board 1.

[0060] Exemplarily, the shape of the portion of the display panel 2 located in the binding area 24 may be a strip extending along the first direction X. The extending direction of the portion of the display panel 2 located in the binding area 24 may be perpendicular to the extending direction of the bending portion 22 .

[0061] It should be noted that, in the process of preparing the above display device 2000, an initial display panel may be formed first, and then two opposite sides of the initial display panel may be bent to form two bent portions 22, and each bent portion 22 may have an angle with the main body 21, thereby obtaining the display panel 2. In addition, the two ends of the above cover plate corresponding to the two bent portions 22 may be bent, and then the bent cover plate may be bonded to the display panel 2, thereby obtaining the above display device 2000.

[0062] In the related art, the initial display panel is usually bound to the flexible circuit board before being bent to obtain an initial display module. Then, the two sides of the initial display panel in the initial display module that are perpendicular to and opposite to the flexible circuit board are bent. However, the above bending process will cause the portion of the display panel located in the binding area, the position where the flexible circuit board is bound to the display panel, and the body of the flexible circuit board to bend. Since the body of the flexible circuit board is not easy to bend, the binding position between the display panel and the flexible circuit board will be peeled off, so that water vapor will invade the inside of the flexible circuit board from the peeling position to form bubbles (such as Figure 1 As shown in the figure, the signal line on the flexible circuit board is broken, which in turn has an adverse effect on the transmission of signals between the flexible circuit board and the display panel, making it difficult for the display module to achieve normal display function.

[0063] Based on this, the present invention provides a flexible circuit board 1, which is applied to the above-mentioned display module 1000. Figure 6 to Figure 9 As shown, the flexible circuit board 1 includes: a device setting portion 13, a connecting portion 12 and a binding portion 11 extending along a first direction X and connected in sequence along a second direction Y.

[0064] In some examples, the device setting portion 13 , the connecting portion 12 , and the binding portion 11 are sequentially connected to each other.

[0065] Exemplarily, the shape of the connection portion 12 may be a long strip extending along the first direction X, and the shape of the binding portion 11 may be a long strip extending along the first direction X.

[0066] Exemplarily, the device setting part 13 is used for device setting, the connecting part 12 can connect the device setting part 13 and the binding part 11 , and the binding part 11 is used for binding with the display panel 2 .

[0067] In some examples, such as Figure 6 and Figure 7 As shown, at least one end of the connecting portion 12 is retracted relative to the ends of the binding portion 11 and the device setting portion 13, and the retracted end of the connecting portion 12, the end at which the binding portion 11 and the retracted end of the connecting portion 12 are at the same end, and the end at which the device setting portion 13 and the retracted end of the connecting portion 12 are at the same end are arranged in a groove shape.

[0068] Exemplarily, the ends of the binding portion 12 refer to the opposite ends of the binding portion 12 along the first direction X; the ends of the device setting portion 13 refer to the opposite ends of the device setting portion 13 along the first direction X.

[0069] For example, Figure 6As shown, one of the two ends of the connecting portion 12 extending along the first direction X is set inwardly relative to the ends of the binding portion 11 and the device setting portion 13. At this time, the connecting portion has an inwardly retracted end. The inwardly retracted end of the connecting portion 12, the end of the binding portion 11 at the same end as the inwardly retracted end of the connecting portion 12, and the end of the device setting portion 13 at the same end as the inwardly retracted end of the connecting portion 12 are set in a groove shape. The end of the binding portion 11 at the same end as the inwardly retracted end of the connecting portion 12, and the end of the device setting portion 13 at the same end as the inwardly retracted end of the connecting portion 12 are disconnected and no connection is formed.

[0070] For example, Figure 7 As shown, both ends of the connecting portion 12 extending along the first direction X are retracted relative to the ends of the binding portion 11 and the device setting portion 13. At this time, the connecting portion 12 has two retracted ends. One of the two retracted ends of the connecting portion 12, an end of the binding portion 11 at the same end as the retracted end, and an end of the device setting portion 13 at the same end as the retracted end are arranged in a groove shape, and the other retracted end of the two retracted ends of the connecting portion 12, the other end of the binding portion 11 at the same end as the retracted end, and the other end of the device setting portion 13 at the same end as the retracted end are arranged in a groove shape. Any end of the binding portion 11 and the end of the device setting portion 13 at the same end as the binding portion 11 are disconnected and no connection is formed.

[0071] By adopting the above-mentioned setting manner, at least one end of the connecting portion 12 of the flexible circuit board 1 is retracted relative to the binding portion 11 and the device setting portion 13, so that the retracted end of the connecting portion 12, the end of the binding portion 11 at the same end as the retracted end of the connecting portion 12, and the end of the device setting portion 13 at the same end as the retracted end of the connecting portion 12 are arranged in a groove shape. In the process of applying external force to the initial display panel for bending, the external force can be released at the groove-shaped structure 101 formed by the above-mentioned retracted setting before being transmitted to the flexible circuit board 1, so as to avoid the external force from being concentrated on the binding portion 11 and the connecting portion 12, so as to protect the flexible circuit board 1, avoid peeling of the binding position between the binding portion 11 and the display panel 2 or avoid breaking of the signal line (such as the data line 135, the touch line 134, etc. mentioned below in the present invention) on the flexible circuit board 1, so as to ensure that the display module 1000 can realize normal functions (such as display function or touch function).

[0072] It should be noted that the size of the connection portion 12 that is retracted relative to the end of the binding portion 11 and the device setting portion 13 is related to the size of the external force of the bending process, the size of the flexible circuit board 1, and the formation process of the display module 1000. Therefore, the size of the connection portion 12 that is retracted relative to the binding portion 11 and the device setting portion 13 can be selected and set according to actual needs, and the present invention does not limit this.

[0073] For example, Figure 7 As shown, at least one end of the connection portion 12 is retracted by 1.5 mm to 2.0 mm relative to the end of the binding portion 11. The size of the groove 101 along the second direction Y can be 0.6 mm to 1.0 mm, that is, the size of the connection portion 12 along the second direction Y is 0.6 mm to 1.0 mm.

[0074] For example, the dimension by which at least one end of the connecting portion 12 is retracted relative to the end of the binding portion 11 may be 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm or 2.0 mm.

[0075] For example, the dimension of the connecting portion 12 along the second direction Y may be 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm or 1.0 mm.

[0076] In the flexible circuit board 1 provided by some embodiments of the present invention, a connecting portion 12 is provided between the binding portion 11 and the device setting portion 13, and at least one end of the connecting portion 11 is retracted relative to the ends of the binding portion 11 and the device setting portion 13, so that the retracted end of the connecting portion 12, the end of the binding portion 11 and the retracted end of the connecting portion 12, and the end of the device setting portion 13 and the retracted end of the connecting portion 12 are in a groove shape. In this way, when the flexible circuit board 1 is applied to the display module 1000, external force is applied to the opposite sides of the display module 1000 for bending. During the bending process of the portion of the display panel 2 located in the binding area 26 and the flexible circuit board 1, the external force can be released at the above-mentioned retracted setting to avoid being transmitted to the flexible circuit board 1 body (for example, including the device setting part 13), thereby avoiding the binding position between the binding part 11 and the display panel 2 from being peeled off or avoiding the signal line on the flexible circuit board 1 (for example, the data line 135, the touch line 134, etc. mentioned below in the present invention) from being broken, thereby improving the stability of the binding between the display panel 2 and the flexible circuit board 1, and ensuring that the display module 1000 can achieve normal functions.

[0077] In some examples, the flexible circuit board 1 may include a multi-layer flexible circuit board. The signal lines in the multi-layer flexible circuit board are distributed in different functional layers, and a ground layer is provided between different functional layers to avoid mutual interference between the signal lines in the flexible circuit board 1 and affect the function of the flexible circuit board 1.

[0078] In some other examples, the flexible circuit board 1 includes a double-layer flexible circuit board.

[0079] The use of a double-layer flexible circuit board reduces the thickness of the flexible circuit board 1 , and the double-layer flexible circuit board has a mature manufacturing process, so the manufacturing cost of the flexible circuit board 1 can be reduced.

[0080] For example, Fig.10 As shown, the double-layer flexible circuit board includes: a first functional layer 151 , a second functional layer 152 , and a base layer 153 disposed between the first functional layer 151 and the second functional layer 152 .

[0081] For example, the first functional layer 151 and the second functional layer 152 may both be conductive layers. The conductive layer may be made of copper foil. The present invention may etch the copper foil to form the required signal routing.

[0082] For example, the material of the base layer 153 may be PI (Polyimide). The base layer 153 may support and fix the first functional layer 151 and the second functional layer 152 and separate them to avoid interference.

[0083] For example, Fig.10 As shown, the above-mentioned double-layer flexible circuit board also includes a first insulating layer 154 and a first electromagnetic shielding layer 155 arranged in sequence on the side of the first functional layer 151 away from the base layer 153, and a second insulating layer 156 and a second electromagnetic shielding layer 157 arranged in sequence on the side of the second functional layer 152 away from the base layer 153.

[0084] The first insulating layer 154 may insulate and protect the first functional layer 151 , and the second insulating layer 156 may insulate and protect the second functional layer 152 .

[0085] The first electromagnetic shielding layer 155 and the second electromagnetic shielding layer 157 can play a shielding role to prevent the first functional layer 151 and the second functional layer 152 from being subjected to electromagnetic interference.

[0086] In some embodiments, Fig. 9 As shown, in the case where the flexible circuit board is a double-layer flexible circuit board, the flexible circuit board 1 further includes: a reinforcing plate 131 arranged on one side of the plane where the device setting portion 13 is located.

[0087] For example, Fig.10 As shown, the reinforcing plate 131 can pass through the via hole of the second electromagnetic shielding layer 157 of the flexible circuit board and be fixed to the second insulating layer 156 of the flexible circuit board.

[0088] Since the strength of the double-layer flexible circuit board is poor and its overall stiffness is poor, providing a reinforcing plate 131 on one side of the device setting area 13 can improve the overall strength of the flexible circuit board 1 and the overall flatness of the flexible circuit board 1, so that devices can be easily set on the device setting part 13 of the flexible circuit board 1.

[0089] In some examples, along the first direction X, the reinforcing plate 131 is close to an inwardly retracted end of the connecting portion 12 .

[0090] Exemplarily, when both ends of the connection portion 12 are set inwardly, the reinforcing plate 131 can be close to either end of the connection portion 12. When one end of the connection portion 12 is set inwardly, the reinforcing plate 131 can be close to the end of the connection portion 12 with the set inwardly.

[0091] In the case where the double-layer flexible circuit board includes a reinforcing plate, during the process of bending the initial display module, the applied external force will drive the bending of the flexible circuit board, and it is difficult to bend at the location of the reinforcing plate. The present invention adopts the above-mentioned setting method, and sets the reinforcing plate 131 along the first direction X, and the end of the inward setting of the connection part 12 is close to the inward setting of the connection part 12. When the display module 1000 is bent, when the applied external force drives the bending of the flexible circuit board 1, the external force can be released at the inward setting of the connection part 12, avoiding bending at the location of the reinforcing plate 131, thereby avoiding stress concentration at the location of the reinforcing plate 131 in the flexible circuit board 1, thereby avoiding peeling of the binding between the location of the flexible circuit board 1 near the reinforcing plate 131 and the display panel 2, and avoiding the breakage of the signal line between the flexible circuit board 1 and the display panel 2, thereby improving the stability of the binding between the flexible circuit board 1 and the display panel 2, and ensuring that the display module 1000 can achieve normal functions.

[0092] In some examples, such as Fig. 9 As shown, the flexible circuit board 1 further includes a connector 136 .

[0093] Exemplarily, the connector 136 may be used to connect to an external circuit board. For example, when the flexible circuit board 1 is applied to the above-mentioned display module 1000 , the connector 136 may be connected to a main board of the display panel 2 .

[0094] In some examples, the display panel 2 may include a touch control structure 23 disposed on a side of the plurality of light-emitting devices away from the substrate.

[0095] Exemplarily, the touch structure 23 can be used to implement the touch function of the display module 1000 .

[0096] Exemplarily, the touch structure may be a FMLOC (Flexible Multi-Layer On Cell) structure.

[0097] Compared with an external touch panel, the touch structure 23 with an FMLOC structure can reduce the thickness of the display module 1000 , improve the yield of the display module 1000 , and thus reduce the manufacturing cost of the display module 1000 .

[0098] In some embodiments, Figure 8 and Fig. 9As shown, the flexible circuit board 1 further includes: a chip disposed on one side of the plane where the device setting portion 13 is located. The chip and the reinforcing plate 131 are respectively located on opposite sides of the plane where the device setting portion 13 is located, and the orthographic projection of the chip on the flexible circuit board 1 is located within the range of the orthographic projection of the reinforcing plate 131 on the flexible circuit board 1.

[0099] Exemplarily, the orthographic projection area of ​​the chip on the flexible circuit board 1 is smaller than the orthographic projection area of ​​the reinforcement plate 131 on the flexible circuit board 1, and the boundary line of the orthographic projection of the chip on the flexible circuit board 1 partially overlaps or does not overlap with the boundary line of the orthographic projection of the reinforcement plate 131 on the flexible circuit board 1, and there is a space between the two.

[0100] By adopting the above arrangement, the welding strength between the chip and the flexible circuit board 1 can be ensured.

[0101] In some examples, the chip may be a touch control chip 132 .

[0102] In some examples, the touch control chip 132 is configured to provide a touch control signal and receive a sensing signal.

[0103] Exemplarily, the touch chip 132 can provide a touch signal to the display panel 2 through the flexible circuit board 1 , and receive a sensing signal from the display panel 2 .

[0104] For example, the touch chip 132 provides a touch signal, which can be transmitted to the touch structure of the display panel 2. The touch signal can be, for example, a signal that sequentially scans along the second direction Y of the display panel 2 to detect capacitance values ​​at different positions of the display panel 2; when a certain position of the display panel 2 is touched, the touch structure in the display panel 2 senses the change in capacitance value at the position, as well as the coordinates of the position in the display panel 2, and then generates a corresponding sensing signal and transmits it to the touch chip 132.

[0105] In some embodiments, Figure 8 and Fig. 9 As shown, the binding part 11 includes a plurality of first touch pins 111. The device setting part 13 includes a plurality of touch wires 134. One end of the plurality of touch wires 134 is bound to the touch chip 132, and the other end of the plurality of touch wires 134 is electrically connected to the plurality of first touch pins 111 respectively.

[0106] Exemplarily, the touch trace 134 may include a transmitting touch trace and a receiving touch trace. The first touch pin 111 may include a first transmitting touch pin and a first receiving touch pin. For example, the first transmitting touch pin may be electrically connected to the transmitting touch trace in a one-to-one correspondence; the touch signal provided by the touch chip 132 may be transmitted to the corresponding first transmitting touch pin via the transmitting touch trace. The first receiving touch pin may be electrically connected to the receiving touch trace in a one-to-one correspondence; the sensing signal received by the first receiving touch pin may be transmitted to the touch chip 132 via the corresponding receiving touch trace.

[0107] It should be noted that the positions of the plurality of first touch pins 111 on the binding portion 11 may be in various situations, for example, the plurality of first touch pins 111 may all be close to one end of the binding portion 11; the plurality of first touch pins 111 may also be close to both ends of the binding portion 11; the plurality of first touch pins 111 may also be located in the middle of the binding portion 11. Accordingly, the positions of the plurality of touch traces 134 on the device setting portion 13 may also be arranged accordingly according to the first touch pins 11 to which they are electrically connected.

[0108] In some embodiments, Figure 8 and Fig. 9 As shown, at least one first touch pin 111 is provided at the same end of the inward end of the binding portion 11 and the connecting portion 12, and along the first direction X, the connecting portion 12 is retracted relative to the binding portion 11 by a preset dimension; the preset dimension is set to the dimension of the area occupied by the at least one first touch pin 111 in the first direction X.

[0109] Exemplarily, one end of the binding portion 11 that is the same as the inwardly retracted end of the connecting portion 12 may be provided with a first touch pin 111 , or a plurality of first touch pins 111 .

[0110] For example, the preset size may be the size of the area occupied by one first touch pin 111 in the first direction X. In this case, the preset size is the size of one first touch pin 111 in the first direction X.

[0111] For another example, the preset size may be the size of the area occupied by the plurality of first touch pins 111 in the first direction X. In this case, the preset size is the sum of the size of the plurality of first touch pins 111 in the first direction X and the spacing between any two adjacent first touch pins 111 in the first direction X.

[0112] By providing at least one first touch pin 111 at the same end of the inward end of the binding part 11 and the connecting part 12, the connecting part 12 is retracted relative to the binding part 11 by a preset dimension along the first direction X. When the two opposite sides of the initial display panel are bent, the external force can be released at the retracted position, thereby ensuring the touch function of the display module 1000, avoiding the external force from being concentrated on the position where the first touch pin 111 is located, avoiding the first touch pin 111 and the touch wiring 134 from being broken, and further affecting the signal transmission between the first touch pin 111 and the touch wiring 134.

[0113] It is understandable that a bonding mark is also provided on one side of the first touch pin 111 close to the binding portion 11. With the above arrangement, the stress at the bonding mark can be effectively released during the bending process of the display module.

[0114] In some embodiments, Figure 8 and Fig. 9 As shown, the flexible circuit board 1 further includes: a data chip 133 disposed on one side of the plane where the device setting portion 13 is located. The data chip 133 and the touch chip 132 are located on the same side of the device setting portion 13. The data chip 133 is configured to provide a data signal.

[0115] Exemplarily, the data chip 133 can provide a data signal to the display panel 2 through the binding of the flexible circuit board 1 and the display panel 2 , thereby realizing normal display of the display module 1000 .

[0116] For example, Figure 8 As shown, when one end of the connection portion 12 is retracted relative to the ends of the binding portion 11 and the device setting portion 13, the data chip 133 can be arranged near the end of the connection portion 12 that is not retracted.

[0117] In some embodiments, the binding part 11 further includes a plurality of first data pins 112. The device setting part 13 further includes a plurality of data traces 135. One end of the plurality of data traces 135 is bound to the data chip 132, and the other end of the plurality of data traces 135 is electrically connected to the plurality of first data pins 112 respectively.

[0118] For example, the plurality of data traces 135 may correspond to the first data pins 112 one by one, and one end of each data trace 135 is electrically connected to a corresponding first data pin 112 .

[0119] Exemplarily, the data chip 133 may provide a data signal, which is transmitted to the corresponding first data pin 112 via the plurality of data traces 135 .

[0120] For example, the touch trace 134 may be located on a first functional layer of a double-layer flexible circuit board, and the data trace 135 may be located on a second functional layer of the double-layer flexible circuit board.

[0121] In some embodiments, Figure 5 As shown, the touch structure 23 in the display panel 2 includes: a first touch electrode layer 231 , a second touch electrode layer 232 and a plurality of touch signal lines 233 .

[0122] It should be noted that there are many arrangements of the first touch electrode layer 231 , the second touch electrode layer 232 , and the plurality of touch signal lines 233 , which can be selected according to actual needs, and the present invention does not limit this.

[0123] In some examples, the first touch electrode layer 231 includes: a plurality of first touch electrodes arranged along a first direction X. The second touch electrode layer 232 includes: a plurality of second touch electrodes arranged along a second direction Y.

[0124] Exemplarily, both the first touch electrode and the second touch electrode may be strip-shaped structures.

[0125] For example, the first touch electrode may be a Tx (Transmit, touch transmitting electrode), and the second touch electrode may be an Rx (Receive, touch receiving electrode); or, the first touch electrode 111 may be an Rx, and the second touch electrode 112 may be a Tx, which is not limited in the embodiments of the present invention. Tx is used to transmit touch signals, and Rx is used to receive touch signals.

[0126] In some examples, one ends of the touch signal lines 233 are electrically connected to the first touch electrodes 231 and the second touch electrodes 232 , respectively; and the other ends of the touch signal lines 233 are electrically connected to the touch chip 132 of the flexible circuit board 1 .

[0127] For example, the touch signal lines 233 may correspond to the first touch electrodes 231 or the second touch electrodes 232 one by one, and one end of each touch signal line 233 is electrically connected to a corresponding first touch electrode 231 or a second touch electrode 232 .

[0128] Exemplarily, the plurality of touch signal lines 233 may include a transmitting touch signal line and a receiving touch signal line. For example, the transmitting touch signal line may be connected to the first touch electrode Tx, and the receiving touch signal line may be connected to the second touch electrode Rx.

[0129] With the above configuration, the touch signal provided by the touch chip 132 can be transmitted to the first touch electrode Tx through the transmitting touch signal line, and the sensing signal received by the second touch electrode Rx can be transmitted to the touch chip 132 through the receiving touch signal line, thereby realizing the touch function of the display module 1000.

[0130] In some examples, the display panel 2 further includes a plurality of second touch pins 241 disposed in the binding area 24. The plurality of second touch pins 241 are respectively electrically connected to the other ends of the plurality of touch signal lines 233 and are respectively bound to the plurality of first touch pins 111 of the flexible circuit board 1.

[0131] For example, the plurality of second touch pins 241 may correspond to the plurality of touch signal lines 233 one by one, and each second touch pin 241 is electrically connected to the other end of one touch signal line 233 .

[0132] For example, the plurality of second touch pins 241 correspond one-to-one to the plurality of first touch pins 111 of the flexible circuit board 1 , and each second touch pin 241 is bound to a corresponding first touch pin 111 .

[0133] Exemplarily, the second touch pin 241 may include a second transmitting touch pin and a second receiving touch pin. The second transmitting touch pin may be connected to a transmitting touch signal line, and the second receiving touch pin may be connected to a receiving touch signal line.

[0134] Exemplarily, the second transmitting touch pin may be bound to the first transmitting touch pin, and the second receiving touch pin may be bound to the first receiving touch pin.

[0135] It should be noted that the sensing signal received by the second touch electrode Rx in the display panel 2 is sequentially transmitted to the touch chip 132 through the receiving touch signal line in the touch signal line 233, the second receiving touch pin in the second touch pin 241, the first receiving touch pin in the first touch pin 111, and the receiving touch line in the touch line 134. After receiving the sensing signal, the touch chip 132 provides a touch signal, which is sequentially transmitted to the first touch electrode Tx in the display panel 2 through the transmitting touch line in the touch line 134, the first transmitting touch pin in the first touch pin 111, the second transmitting touch pin in the second touch pin 241, and the transmitting touch signal line in the touch signal line 233. Thus, the touch function of the display module 1000 is realized.

[0136] With the above arrangement, when the display module 1000 is bent, at least one end of the connection portion 12 is set back relative to the binding portion 11 and the device setting portion 13, so that the binding between the second touch pin 241 and the first touch pin 111 can be prevented from peeling off, thereby affecting the touch function of the display module 1000. It can also prevent water vapor from invading the display module 1000 through the gap after the second touch pin 241 and the first touch pin 111 are peeled off, thereby shortening the life of the display module 1000.

[0137] In some embodiments, Figure 5 As shown, the display panel 2 further includes a plurality of second data pins 242 disposed in the binding area 24. The plurality of second data pins 242 are respectively electrically connected to one end of the plurality of data lines 25, and are respectively bound to the plurality of first data pins 112 of the flexible circuit board 1.

[0138] For example, the plurality of second data pins 242 correspond to the plurality of first data pins 112 one by one, and each second data pin 242 is bound to a corresponding first data pin 112 .

[0139] It should be noted that in the actual product display module 1000 of the present invention, the plurality of first data pins 112 and the corresponding plurality of second data pins 242 should overlap and bind to each other. Figure 3 In the figure, only to clearly illustrate the binding correspondence between the multiple first data pins 112 and the multiple second data pins 242, the one-to-one corresponding first data pins 112 and the second data pins 242 are drawn as a staggered overlapping relationship, which does not represent the relative position relationship between the first data pins 112 and the second data pins 242 in the actual product.

[0140] Exemplarily, the data signal provided by the data chip 133 in the flexible circuit board 1 is transmitted to the corresponding pixel driving circuit of the display structure of the display panel 2 through each data line 135, each first data pin 112, each second data pin 242, and each data line 25 in sequence, driving the corresponding light-emitting device to emit light, thereby realizing the display function of the display panel 2.

[0141] With the above arrangement, when the display module 1000 is bent, at least one end of the connection portion 12 is set back relative to the binding portion 11 and the device setting portion 13, so that the binding between the second data pin 242 and the first data pin 112 can be prevented from peeling off, thereby affecting the display function of the display module 1000. The above arrangement can also prevent water vapor from invading the display module 1000 from the gap after the second touch pin 241 and the first touch pin 111 are peeled off to form bubbles, etc., thereby shortening the life of the display module 1000.

[0142] The beneficial effects that can be achieved by the display device provided by some embodiments of the present invention are the same as the beneficial effects that can be achieved by the flexible circuit board provided in some of the above embodiments, and will not be described in detail here.

[0143] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a person skilled in the art can think of within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A flexible circuit board, characterized in that: The flexible circuit board comprises: a device setting portion, a connecting portion and a binding portion extending along a first direction and connected in sequence along a second direction; the first direction and the second direction intersect; The two ends of the connecting portion are set inwardly relative to the ends of the binding portion and the device setting portion; the inwardly shrunk end of the connecting portion, the end of the binding portion at the same end as the inwardly shrunk end of the connecting portion, and the end of the device setting portion at the same end as the inwardly shrunk end of the connecting portion are set in a groove shape; The flexible circuit board further includes: a reinforcing plate arranged on one side of the plane where the device setting portion is located; wherein, along the first direction, the reinforcing plate is close to an end of the connecting portion that is inwardly arranged.

2. The flexible circuit board according to claim 1, characterized in that: The flexible circuit board includes a double-layer flexible circuit board.

3. The flexible circuit board according to claim 1, characterized in that: The flexible circuit board further includes: a chip arranged on one side of the plane where the device arrangement portion is located; The chip and the reinforcing plate are respectively located on opposite sides of the plane where the device setting portion is located, and the orthographic projection of the chip on the flexible circuit board is located within the range of the orthographic projection of the reinforcing plate on the flexible circuit board.

4. The flexible circuit board according to claim 3, characterized in that: The chip includes a touch control chip; the touch control chip is configured to provide a touch control signal and receive a sensing signal.

5. The flexible circuit board according to claim 4, characterized in that: The binding portion includes a plurality of first touch pins; The device setting part includes a plurality of touch control traces; One ends of the plurality of touch lines are bound to the touch chip, and the other ends of the plurality of touch lines are electrically connected to the plurality of first touch pins respectively.

6. The flexible circuit board according to claim 5, characterized in that: At least one of the first touch pins is disposed at one end of the binding portion and the same end as the inwardly retracted end of the connecting portion, and along the first direction, the connecting portion is retracted relative to the binding portion by a preset dimension; The preset size is set to be the size of an area occupied by at least one of the first touch pins in the first direction.

7. The flexible circuit board according to claim 4, characterized in that: The flexible circuit board further comprises: a data chip arranged on one side of the plane where the device setting part is located; the data chip and the touch chip are located on the same side of the device setting part; Wherein, the data chip is configured to provide a data signal.

8. The flexible circuit board according to claim 7, characterized in that: The binding portion further includes a plurality of first data pins; The device setting part also includes a plurality of data routing lines; One ends of the plurality of data lines are bound to the data chip, and the other ends of the plurality of data lines are electrically connected to the plurality of first data pins respectively.

9. The flexible circuit board according to claim 2, characterized in that: The double-layer flexible circuit board comprises: A first functional layer, a second functional layer, and a substrate disposed between the first functional layer and the second functional layer.

10. A display module, characterized in that: The display module comprises: A display panel, the display panel comprising a main body, and bending portions arranged at two opposite ends of the main body along a first direction and extending along a second direction; an angle is formed between the two bending portions and the main body; And, a flexible circuit board according to any one of claims 1 to 9, which is bound to the display panel.

11. The display module according to claim 10, characterized in that: The display panel includes a touch control structure; The touch control structure includes: a first touch control electrode layer, a second touch control electrode layer and a plurality of touch control signal lines; The first touch electrode layer includes: a plurality of first touch electrodes arranged along a first direction; The second touch electrode layer includes: a plurality of second touch electrodes arranged along a second direction; One ends of the plurality of touch signal lines are electrically connected to the plurality of first touch electrodes and the plurality of second touch electrodes respectively; The other ends of the plurality of touch signal lines are electrically connected to the touch chip of the flexible circuit board.

12. The display module according to claim 11, characterized in that: The display panel has a binding area; The display panel further includes a plurality of second touch pins arranged in the binding area; The plurality of second touch pins are respectively electrically connected to the other ends of the plurality of touch signal lines, and are respectively bound to the plurality of first touch pins of the flexible circuit board.

13. The display module according to claim 12, characterized in that: The display panel further includes a plurality of second data pins arranged in the binding area; The display panel also includes a plurality of data lines; The plurality of second data pins are respectively electrically connected to one end of the plurality of data lines, and are respectively bound to the plurality of first data pins of the flexible circuit board.

14. A display device, characterized in that: The display device comprises: a display module as claimed in any one of claims 10 to 13.

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