Display device

Abstract

Embodiments of the present application disclose a display device. The display device comprises a display panel, a flexible circuit board, and at least two rows of third connecting portions arranged along a first direction on one side of the flexible circuit board facing the display panel; the display panel is provided with at least two rows of fourth connecting portions arranged along the first direction on one side facing the flexible circuit board, the fourth connecting portions are arranged correspondingly to the third connecting portions, and the fourth connecting portions are electrically connected to the corresponding third connecting portions; in the first direction, the orthographic projection of the opposite side of the adjacent two rows of third connecting portions on the display panel is at least partially located in the orthographic projection of the corresponding fourth connecting portions on the display panel. The fourth connecting portions are used to support the third connecting portions, which can effectively reduce the risk of the third connecting portions being concave and warped, thereby avoiding abnormal compression impedance between the third connecting portions and the fourth connecting portions, and ensuring the display quality of the display device.

Description

Technical Field

[0001] This application relates to the field of displays, and more specifically to a display device. Background Technology

[0002] Currently, to ensure power supply, medium and large-sized OLED displays often employ printed circuit boards (PCBs) to solder critical electronic components onto them. These PCBs process the input signals to the display, which are then transmitted to the drive circuitry within the display panel via flexible printed circuit boards (FPCs), thus enabling signal processing and power supply to the panel. The flexible and PCBs are connected via high-temperature lamination. Due to the flexibility of the flexible PCB, during this lamination process, one side of the two rows of connecting sections on the flexible PCB may buckle or warp, causing abnormal lamination impedance between the flexible and PCBs and consequently affecting the overall display quality. Summary of the Invention

[0003] This application provides a display device that can solve the problem of abnormal bonding impedance caused by the easy occurrence of dents and warping when the flexible circuit board is connected to the display panel in existing display devices.

[0004] This application provides a display device, including:

[0005] Display panel;

[0006] A flexible circuit board is electrically connected to the display panel, and the flexible circuit board is provided with at least two rows of first connection portions distributed along a first direction;

[0007] A printed circuit board is disposed on one side of the flexible circuit board having the first connection portion. The side of the printed circuit board facing the flexible circuit board has at least two rows of second connection portions distributed along the first direction. The second connection portions are disposed corresponding to the first connection portions and are electrically connected to the corresponding first connection portions.

[0008] In the first direction, the orthographic projection of the opposite side of two adjacent rows of the first connecting portions on the printed circuit board is at least partially located within the orthographic projection of the corresponding second connecting portion on the printed circuit board.

[0009] Optionally, in some embodiments of this application, in the first direction, the spacing between two adjacent rows of the first connecting portions is greater than the spacing between two corresponding adjacent rows of the second connecting portions.

[0010] Optionally, in some embodiments of this application, the flexible circuit board is provided with two rows of the first connecting portions, and the printed circuit board is provided with two rows of the second connecting portions. In the first direction, the orthographic projection of the opposite side of the two rows of the second connecting portions on the flexible circuit board is at least partially located within the orthographic projection of the corresponding first connecting portion on the flexible circuit board.

[0011] Optionally, in some embodiments of this application, in the first direction, the distance between the opposite side of two adjacent rows of first connecting portions and the side of the corresponding second connecting portion is greater than or equal to 50 micrometers and less than or equal to 120 micrometers.

[0012] Optionally, in some embodiments of this application, each row of the first connecting portion includes a plurality of first connecting terminals spaced apart along the second direction, and each row of the second connecting portion includes a plurality of second connecting terminals spaced apart along the second direction. The second connecting terminals are arranged in a one-to-one correspondence with the first connecting terminals, and the second connecting terminals are electrically connected to the corresponding first connecting terminals. The second direction forms an angle with the first direction.

[0013] In the second direction, the orthographic projection of the opposite side of two adjacent first connection terminals on the printed circuit board is at least partially located within the orthographic projection of the corresponding second connection terminal on the printed circuit board.

[0014] Optionally, in some embodiments of this application, in the second direction, the spacing between two adjacent first connection terminals is greater than the spacing between two corresponding adjacent second connection terminals.

[0015] Optionally, in some embodiments of this application, the flexible circuit board has at least two rows of third connecting portions distributed along the first direction on the side facing the display panel, and the display panel has at least two rows of fourth connecting portions distributed along the first direction on the side facing the flexible circuit board. The fourth connecting portions are corresponding to the third connecting portions, and the fourth connecting portions are electrically connected to the corresponding third connecting portions.

[0016] In the first direction, the orthographic projection of the opposite side of two adjacent rows of the third connecting portions on the display panel is at least partially located within the orthographic projection of the corresponding fourth connecting portion on the display panel.

[0017] Optionally, in some embodiments of this application, the flexible circuit board is provided with two rows of the third connecting portions, and the display panel is provided with two rows of the fourth connecting portions. In the first direction, the orthographic projection of the opposite side of the two rows of the fourth connecting portions on the flexible circuit board is at least partially located within the orthographic projection of the corresponding third connecting portion on the flexible circuit board.

[0018] Optionally, in some embodiments of this application, each row of the third connecting portions includes a plurality of third connecting terminals spaced apart along the second direction, and each row of the fourth connecting portions includes a plurality of fourth connecting terminals spaced apart along the second direction. The fourth connecting terminals are arranged in a one-to-one correspondence with the third connecting terminals, and the fourth connecting terminals are electrically connected to the corresponding third connecting terminals. The second direction forms an angle with the first direction.

[0019] In the second direction, the orthographic projection of the opposite side of two adjacent third connection terminals on the display panel is at least partially located within the orthographic projection of the corresponding fourth connection terminal on the display panel.

[0020] Optionally, in some embodiments of this application, the display device further includes a conductive adhesive layer disposed between the flexible circuit board and the printed circuit board, and between the flexible circuit board and the display panel; the conductive adhesive layer includes a plurality of conductive particles, the first connecting portion and the second connecting portion are electrically connected through the conductive particles, and the third connecting portion and the fourth connecting portion are electrically connected through the conductive particles.

[0021] In this embodiment, the display device includes a display panel and a flexible circuit board. The flexible circuit board is electrically connected to the display panel. At least two rows of third connecting portions distributed along a first direction are provided on the side of the flexible circuit board facing the display panel. At least two rows of fourth connecting portions distributed along the first direction are provided on the side of the display panel facing the flexible circuit board. The fourth connecting portions correspond to the third connecting portions and are electrically connected to them. In the display device viewed from above, in the first direction, the orthographic projection of the opposite side of two adjacent rows of third connecting portions on the display panel is at least partially located within the orthographic projection of the corresponding fourth connecting portion on the display panel. By placing at least a portion of the orthographic projection of the opposite side of two adjacent rows of third connecting portions on the display panel within the orthographic projection of the corresponding fourth connecting portion on the display panel, and using the fourth connecting portion to support the third connecting portion, this application effectively reduces the risk of the third connecting portion denting or warping, thereby avoiding abnormal pressure resistance between the third and fourth connecting portions and ensuring the display quality of the display device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0024] Figure 2 This is one of the embodiments provided in this application. Figure 1 A cross-sectional view from the perspective of the middle AA (analogous to ...

[0025] Figure 3 This is another embodiment provided in this application. Figure 1 A cross-sectional view from the perspective of the middle AA (analogous to ...

[0026] Figure 4 This is a schematic diagram of the connection between a flexible circuit board and a printed circuit board provided in an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the connection between a flexible circuit board and a display panel provided in an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Display device;

[0030] 100. Display panel; 110. Fourth connecting part; 111. Fourth connecting terminal;

[0031] 200, Flexible circuit board; 210, First connecting part; 211, First connecting terminal; 220, Third connecting part; 221, Third connecting terminal;

[0032] 300. Printed circuit board; 310. Second connecting part; 311. Second connecting terminal;

[0033] 400, conductive adhesive layer; 410, conductive particles;

[0034] X, the first direction; Y, the second direction. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0036] This application provides a display device, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0037] like Figure 1 As shown, the display device 10 includes a display panel 100, a flexible circuit board 200, and a printed circuit board 300. The flexible circuit board 200 is electrically connected to the display panel 100, and the printed circuit board 300 is electrically connected to the flexible circuit board 200. That is, the printed circuit board 300 is used to receive display control signals and process the control signals, and then transmit them to the drive circuit in the display panel 100 through the flexible circuit board 200, thereby realizing the processing of signals in the display panel 100 and power supply.

[0038] Among them, such as Figure 4 As shown, the flexible circuit board 200 is provided with at least two rows of first connection portions 210 distributed along the first direction X. The first connection portions 210 are used to electrically connect with the printed circuit board 300. Connection lines are formed in the flexible circuit board 200. The first connection portions 210 are electrically connected to the display panel 100 through the connection lines in the flexible circuit board 200 to transmit control signals to the display panel 100.

[0039] The printed circuit board 300 is disposed on the side of the flexible circuit board 200 having the first connection portion 210. The side of the printed circuit board 300 facing the flexible circuit board 200 has at least two rows of second connection portions 310 distributed along the first direction X. The second connection portions 310 are correspondingly disposed to the first connection portions 210 and are electrically connected to the corresponding first connection portions 210. That is, after the printed circuit board 300 receives and processes the control signal, it transmits it to the first connection portion 210 through the second connection portion 310, and then transmits it to the driving circuit in the display panel 100 through the connection lines in the flexible circuit board 200 to drive the display of the display panel 100.

[0040] Among them, such as Figure 2and Figure 3 As shown, in the first direction X, the orthographic projection of the opposite side of two adjacent rows of first connecting portions 210 on the printed circuit board 300 is at least partially located within the orthographic projection of the corresponding second connecting portion 310 on the printed circuit board 300. That is, when the first connecting portion 210 is connected to the second connecting portion 310, at least part of the opposite side of two adjacent rows of first connecting portions 210 can be supported on the second connecting portion 310. Since the first connecting portion 210 is disposed on the flexible circuit board 200, when the first connecting portion 210 and the second connecting portion 310 are connected by thermoforming, if the opposite side of two adjacent rows of first connecting portions 210 protrudes beyond the corresponding second connecting portion 310, the first connecting portion 210 will be recessed and raised on that side, and the other side of the first connecting portion 210 may be raised in the opposite direction, resulting in uneven contact between the first connecting portion 210 and the second connecting portion 310, and thus abnormal pressing resistance between the first connecting portion 210 and the second connecting portion 310. This application, by placing at least a portion of the orthographic projection of the opposite side of the two adjacent rows of first connecting portions 210 on the printed circuit board 300 within the orthographic projection of the corresponding second connecting portion 310 on the printed circuit board 300, and using the second connecting portion 310 to support the first connecting portion 210, can effectively reduce the risk of the first connecting portion 210 being dented or warped, thereby avoiding abnormal pressure resistance between the first connecting portion 210 and the second connecting portion 310, and ensuring the display quality of the display device 10.

[0041] In this embodiment, the display device 10 includes a display panel 100, a flexible circuit board 200, and a printed circuit board 300. The flexible circuit board 200 is electrically connected to the display panel 100. The flexible circuit board 200 is provided with at least two rows of first connecting portions 210 distributed along a first direction X. The printed circuit board 300 is disposed on the side of the flexible circuit board 200 with the first connecting portions 210. The side of the printed circuit board 300 facing the flexible circuit board 200 is provided with at least two rows of second connecting portions 310 distributed along the first direction X. The second connecting portions 310 are correspondingly disposed with the first connecting portions 210 and are electrically connected to the corresponding first connecting portions 210. In the first direction X, the orthographic projection of the opposite side of two adjacent rows of first connecting portions 210 on the printed circuit board 300 is at least partially located within the orthographic projection of the corresponding second connecting portion 310 on the printed circuit board 300. This application, by placing at least a portion of the orthographic projection of the opposite side of the two adjacent rows of first connecting portions 210 on the printed circuit board 300 within the orthographic projection of the corresponding second connecting portion 310 on the printed circuit board 300, and using the second connecting portion 310 to support the first connecting portion 210, can effectively reduce the risk of the first connecting portion 210 being dented or warped, thereby avoiding abnormal pressure resistance between the first connecting portion 210 and the second connecting portion 310, and ensuring the display quality of the display device 10.

[0042] Optional, such as Figures 2 to 4 As shown, in the first direction X, the spacing between two adjacent rows of first connecting portions 210 is greater than the spacing between two adjacent rows of second connecting portions 310. That is, there is a gap between the opposite side of the two adjacent rows of first connecting portions 210 and the side of the corresponding second connecting portion 310. This is to accommodate the errors generated during the manufacturing and alignment of the first connecting portions 210 and the second connecting portions 310, as well as the displacement of the second connecting portion 310 caused by the expansion of the printed circuit board 300 in the first direction X during the hot pressing process. This further avoids the opposite side of the two adjacent rows of first connecting portions 210 from being recessed or raised due to protrusion from the corresponding second connecting portion 310, thereby reducing the risk of abnormal pressing resistance between the first connecting portion 210 and the second connecting portion 310.

[0043] In some embodiments, the flexible circuit board 200 is provided with two rows of first connecting portions 210, and the printed circuit board 300 is provided with two rows of second connecting portions 310. In the first direction X, the orthographic projection of the opposite side of the two rows of second connecting portions 310 on the flexible circuit board 200 is at least partially located within the orthographic projection of the corresponding first connecting portion 210 on the flexible circuit board 200. That is, the opposite side of the two rows of first connecting portions 210 at least partially protrudes beyond the edge of the corresponding second connecting portion 310 or is flush with the edge of the second connecting portion 310, so as to avoid the opposite side of the two rows of first connecting portions 210 from being recessed or raised, while ensuring that the first connecting portion 210 and the second connecting portion 310 have sufficient connection area.

[0044] In other embodiments, when the flexible circuit board 200 is provided with multiple rows (more than two rows) of first connecting portions 210 and the printed circuit board 300 is provided with multiple rows (more than two rows) of second connecting portions 310, in the first direction X, the orthographic projections on the flexible circuit board 200 of the opposite sides of the two rows of second connecting portions 310 located at the two side edges are at least partially located within the orthographic projections of the corresponding first connecting portions 210 on the flexible circuit board 200, while the orthographic projections on the printed circuit board 300 of the opposite sides of the first connecting portions 210 located in the middle region in the first direction X are located within the orthographic projections of the corresponding second connecting portions 310 on the printed circuit board 300. That is, the opposite sides of the first connecting portions 210 located at the two side edges in the first direction X can protrude beyond the corresponding second connecting portions 310, while the dimensions of the first connecting portions 210 located in the middle region in the first direction X are all smaller than the corresponding second connecting portions 310.

[0045] It should be noted that when the first connecting part 210 and the second connecting part 310 are heat-pressed together, the pressure range of the pressure head is based on the range of the second connecting part 310 in the first direction X. That is, the pressure range of the pressure head is the range formed by the two side edges of the entire second connecting part 310 in the first direction X. In other words, the part of the first connecting part 210 located on the two side edges in the first direction X that protrudes from the corresponding second connecting part 310 will not be subjected to pressure, so no dent or warping will occur. By setting the first connecting part 210 located on the two side edges to protrude from the corresponding second connecting part 310, it can be ensured that the first connecting part 210 and the second connecting part 310 have sufficient connection area to effectively improve the connection stability of the first connecting part 210 and the second connecting part 310.

[0046] Optionally, in the first direction X, the distance between the opposite side of two adjacent rows of first connecting portions 210 and the corresponding side of the second connecting portion 310 is greater than or equal to 50 micrometers and less than or equal to 120 micrometers. If the distance is too large, the effective connection area between the first connecting portion 210 and the second connecting portion 310 will be too small, which is not conducive to the connection stability between the first connecting portion 210 and the second connecting portion 310; if the distance is too small, the processing and alignment accuracy requirements of the first connecting portion 210 and the second connecting portion 310 will be high, increasing production costs.

[0047] In actual manufacturing, the spacing can be set to 50 micrometers, 80 micrometers, 100 micrometers or 120 micrometers, etc. The specific spacing value can be selected and adjusted according to the machining alignment accuracy of the first connecting part 210 and the second connecting part 310 and the actual connection requirements. No special restrictions are imposed here.

[0048] Optionally, each row of first connecting portions 210 includes a plurality of first connecting terminals 211 spaced apart along the second direction Y, and each row of second connecting portions 310 includes a plurality of second connecting terminals 311 spaced apart along the second direction Y. The second connecting terminals 311 correspond one-to-one with the first connecting terminals 211, and are electrically connected to their corresponding first connecting terminals 211. The second direction Y forms an angle with the first direction X. That is, the first connecting portions 210 and the second connecting portions 310 are electrically connected through the corresponding connections of the plurality of first connecting terminals 211 and the plurality of second connecting terminals 311. The first connecting terminals 211 are electrically connected to the display panel 100 through connecting lines within the flexible circuit board 200, and the second connecting terminals 311 are electrically connected to connecting lines within the printed circuit board 300. The first direction X and the second direction Y represent the horizontal and vertical directions, respectively; that is, the first direction X is perpendicular to the second direction Y.

[0049] In the second direction Y, the orthographic projection of the opposite side of two adjacent first connection terminals 211 on the printed circuit board 300 is at least partially located within the orthographic projection of the corresponding second connection terminal 311 on the printed circuit board 300. That is, when the first connection terminal 211 is connected to the second connection terminal 311, the opposite side of two adjacent first connection terminals 211 can be at least partially supported on the second connection terminal 311. Since the size of the first connection terminal 211 in the second direction Y is much smaller than its size in the first direction X, the potential impact of its denting or warping in the second direction Y can be ignored. However, in this embodiment, the arrangement of the first connection terminal 211 and the second connection terminal 311 in the second direction Y is consistent with that in the first direction X, which can minimize the risk of the first connection terminal 211 denting or warping, and thus minimize the risk of abnormal pressure resistance between the first connection terminal 211 and the second connection terminal 311.

[0050] In some embodiments, in the second direction Y, the spacing between two adjacent first connection terminals 211 is greater than the spacing between two corresponding adjacent second connection terminals 311. That is, there is a spacing between the opposite side of two adjacent first connection terminals 211 and the side of the corresponding second connection terminal 311, so as to accommodate the errors generated during the manufacturing and alignment of the first connection terminals 211 and the second connection terminals 311, as well as the displacement of the second connection terminals 311 caused by the expansion of the printed circuit board 300 in the second direction Y during the hot pressing process, thereby ensuring the effective and stable connection between the first connection terminals 211 and the second connection terminals 311.

[0051] Optional, such as Figure 5 As shown, the flexible circuit board 200 has at least two rows of third connection portions 220 distributed along the first direction X on the side facing the display panel 100. The display panel 100 has at least two rows of fourth connection portions 110 distributed along the first direction X on the side facing the flexible circuit board 200. The fourth connection portions 110 are corresponding to the third connection portions 220 and are electrically connected to the corresponding third connection portions 220. That is, after the printed circuit board 300 receives and processes the control signal, it is transmitted to the first connection portion 210 of the flexible circuit board 200 through the second connection portion 310. The first connection portion 210 is electrically connected to the third connection portion 220 through the connection trace in the flexible circuit board 200, and then transmitted to the fourth connection portion 110 of the display panel 100 through the third connection portion 220 of the flexible circuit board 200. The fourth connection portion 110 is electrically connected to the driving circuit in the display panel 100. After receiving the control signal, the driving circuit drives the display panel 100 to display.

[0052] In the first direction X, the orthographic projection of the opposite side of two adjacent rows of third connecting portions 220 on the display panel 100 is at least partially located within the orthographic projection of the corresponding fourth connecting portion 110 on the display panel 100. That is, when the third connecting portion 220 is connected to the fourth connecting portion 110, at least part of the opposite side of two adjacent rows of third connecting portions 220 can be supported on the fourth connecting portion 110. Since the third connecting portion 220 is disposed on the flexible circuit board 200, when the third connecting portion 220 and the fourth connecting portion 110 are connected by thermoforming, if the opposite side of two adjacent rows of third connecting portions 220 protrudes from the corresponding fourth connecting portion 110, the third connecting portion 220 will be recessed and raised on that side, and the other side of the third connecting portion 220 may be raised in the opposite direction, resulting in uneven contact between the third connecting portion 220 and the fourth connecting portion 110, and thus abnormal pressing resistance between the third connecting portion 220 and the fourth connecting portion 110. This application, by placing at least a portion of the orthographic projection of the opposite side of the two adjacent rows of third connecting portions 220 on the display panel 100 within the orthographic projection of the corresponding fourth connecting portion 110 on the display panel 100, and using the fourth connecting portion 110 to support the third connecting portion 220, can effectively reduce the risk of the third connecting portion 220 denting or warping, thereby avoiding abnormal pressure resistance between the third connecting portion 220 and the fourth connecting portion 110, and ensuring the display quality of the display device 10.

[0053] In some embodiments, the flexible circuit board 200 is provided with two rows of third connecting portions 220, and the display panel 100 is provided with two rows of fourth connecting portions 110. In the first direction X, the orthographic projection of the opposite side of the two rows of fourth connecting portions 110 on the flexible circuit board 200 is at least partially located within the orthographic projection of the corresponding third connecting portion 220 on the flexible circuit board 200. That is, the opposite side of the two rows of third connecting portions 220 at least partially protrudes beyond the edge of the corresponding fourth connecting portion 110 or is flush with the edge of the fourth connecting portion 110, so as to avoid the opposite side of the two rows of third connecting portions 220 from being recessed or raised, while ensuring that the third connecting portion 220 and the fourth connecting portion 110 have sufficient connection area.

[0054] In other embodiments, when the flexible circuit board 200 is provided with multiple rows (more than two rows) of third connecting portions 220 and the display panel 100 is provided with multiple rows (more than two rows) of fourth connecting portions 110, in the first direction X, the orthographic projections on the flexible circuit board 200 of the opposite sides of the two rows of fourth connecting portions 110 located at the two side edges are at least partially located within the orthographic projections of the corresponding third connecting portions 220 on the flexible circuit board 200, while the orthographic projections on the display panel 100 of the opposite sides of the third connecting portions 220 located in the middle region are located within the orthographic projections of the corresponding fourth connecting portions 110 on the display panel 100. That is, the opposite sides of the third connecting portions 220 located at the two side edges in the first direction X can protrude beyond the corresponding fourth connecting portions 110, while the dimensions of the third connecting portions 220 located in the middle region in the first direction X are all smaller than the corresponding fourth connecting portions 110.

[0055] It should be noted that when hot-pressing the third connecting part 220 and the fourth connecting part 110, the pressure range of the pressure head is based on the range of the fourth connecting part 110 in the first direction X. That is, the pressure range of the pressure head is the range formed by the two side edges of the entire row of fourth connecting parts 110 in the first direction X. In other words, the part of the third connecting part 220 located on the two side edges in the first direction X that protrudes from the corresponding fourth connecting part 110 will not be subjected to pressure, so no dent or warping will occur. By setting the third connecting part 220 located on the two side edges to protrude from the corresponding fourth connecting part 110, it can be ensured that the third connecting part 220 and the fourth connecting part 110 have sufficient connection area to effectively improve the connection stability of the third connecting part 220 and the fourth connecting part 110.

[0056] Optionally, each row of third connecting portions 220 includes a plurality of third connecting terminals 221 spaced apart along the second direction Y, and each row of fourth connecting portions 110 includes a plurality of fourth connecting terminals 111 spaced apart along the second direction Y. The fourth connecting terminals 111 correspond one-to-one with the third connecting terminals 221, and are electrically connected to their respective third connecting terminals 221. The second direction Y forms an angle with the first direction X. That is, the third connecting portions 220 and fourth connecting portions 110 are electrically connected through the corresponding connections of the plurality of third connecting terminals 221 and the plurality of fourth connecting terminals 111. The third connecting terminals 221 are electrically connected to the first connecting terminals 211 through connecting lines within the flexible circuit board 200, thereby being electrically connected to the printed circuit board 300. The fourth connecting terminals 111 are electrically connected to the driving circuit within the display panel 100. The first direction X and the second direction Y represent the horizontal and vertical directions, respectively; that is, the first direction X is perpendicular to the second direction Y.

[0057] In the second direction Y, the orthographic projection of the opposite side of two adjacent third connection terminals 221 on the display panel 100 is at least partially located within the orthographic projection of the corresponding fourth connection terminal 111 on the display panel 100. That is, when the third connection terminal 221 is connected to the fourth connection terminal 111, the opposite side of two adjacent third connection terminals 221 can be at least partially supported on the fourth connection terminal 111. Since the size of the third connection terminal 221 in the second direction Y is much smaller than its size in the first direction X, the potential impact of its denting or warping in the second direction Y can be ignored. However, in this embodiment, the arrangement of the third connection terminal 221 and the fourth connection terminal 111 in the second direction Y is consistent with that in the first direction X, which can minimize the risk of the third connection terminal 221 denting or warping, and thus minimize the risk of abnormal pressing resistance between the third connection terminal 221 and the fourth connection terminal 111.

[0058] In some embodiments, in the second direction Y, the spacing between two adjacent third connection terminals 221 is greater than the spacing between two corresponding adjacent fourth connection terminals 111. That is, there is a spacing between the opposite side of two adjacent third connection terminals 221 and the side of the corresponding fourth connection terminal 111, so as to accommodate the errors generated during the manufacturing and alignment of the third connection terminals 221 and the fourth connection terminals 111, thereby ensuring the effective and stable connection between the third connection terminals 221 and the fourth connection terminals 111.

[0059] Optional, such as Figure 2 and Figure 3 As shown, the display device 10 also includes a conductive adhesive layer 400, which is disposed between the flexible circuit board 200 and the printed circuit board 300, and between the flexible circuit board 200 and the display panel 100. The conductive adhesive layer 400 includes a plurality of conductive particles 410. The first connecting part 210 and the second connecting part 310 are electrically connected through the conductive particles 410, and the third connecting part 220 and the fourth connecting part 110 are electrically connected through the conductive particles 410. That is, the conductive adhesive layer 400 can both serve as an adhesive and a fixed bonding function, and also serve as an electrical connection function. When connecting the flexible circuit board 200 to the display panel 100 and the flexible circuit board 200 to the printed circuit board 300, the conductive adhesive layer 400 is made to have a certain fluidity by hot pressing. The conductive particles 410 between the first connecting part 210 and the second connecting part 310 and the third connecting part 220 and the fourth connecting part 110 are broken under pressure, so that the first connecting part 210 and the second connecting part 310 and the third connecting part 220 and the fourth connecting part 110 are connected, thereby realizing the electrical connection between the display panel 100, the flexible circuit board 200 and the printed circuit board 300.

[0060] It should be noted that the spacing between the opposite side of the first connecting part 210 and the corresponding side of the second connecting part 310 in two adjacent rows, and the spacing between the opposite side of the third connecting part 220 and the corresponding side of the fourth connecting part 110 in two adjacent rows, can be selected and adjusted not only according to their respective processing alignment accuracy, but also according to the number of conductive particles 410 corresponding to the actual connection requirements, so as to ensure the connection stability between the first connecting part 210 and the second connecting part 310, and between the third connecting part 220 and the fourth connecting part 110.

[0061] The above provides a detailed description of a display device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display device, characterized in that, include: Display panel; A flexible circuit board is electrically connected to the display panel, and at least two rows of third connecting portions distributed along a first direction are provided on the side of the flexible circuit board facing the display panel. Wherein, at least two rows of fourth connecting portions are provided on the side of the display panel facing the flexible circuit board, distributed along the first direction, the fourth connecting portions are corresponding to the third connecting portions, and the fourth connecting portions are electrically connected to the corresponding third connecting portions; In the display device viewed from above, in the first direction, the orthographic projection of the opposite side of the two adjacent rows of the third connecting portions on the display panel is at least partially located within the orthographic projection of the corresponding fourth connecting portion on the display panel, and the opposite side of the third connecting portions of the first and last rows protrudes from the corresponding fourth connecting portion.

2. The display device according to claim 1, characterized in that, The flexible circuit board is provided with two rows of the third connecting parts, and the display panel is provided with two rows of the fourth connecting parts.

3. The display device according to claim 1, characterized in that, The flexible circuit board is provided with more than two rows of the third connecting portions, and the display panel is provided with more than two rows of the fourth connecting portions; In the display device viewed from above, the orthographic projections of the opposite sides of the third connecting portion located in the middle region on the display panel in the first direction are located within the orthographic projections of the corresponding fourth connecting portion on the display panel.

4. The display device according to any one of claims 1 to 3, characterized in that, Each row of the third connecting portion includes a plurality of third connecting terminals spaced apart along the second direction, and each row of the fourth connecting portion includes a plurality of fourth connecting terminals spaced apart along the second direction. The fourth connecting terminals are arranged in a one-to-one correspondence with the third connecting terminals, and the fourth connecting terminals are electrically connected to the corresponding third connecting terminals. The second direction forms an angle with the first direction. In the second direction, the orthographic projection of the opposite side of two adjacent third connection terminals on the display panel is at least partially located within the orthographic projection of the corresponding fourth connection terminal on the display panel.

5. The display device according to claim 1, characterized in that, The flexible circuit board is provided with at least two rows of first connecting portions distributed along the first direction; the display device includes a printed circuit board, the printed circuit board is disposed on the side of the flexible circuit board having the first connecting portions, and the side of the printed circuit board facing the flexible circuit board is provided with at least two rows of second connecting portions distributed along the first direction, the second connecting portions are corresponding to the first connecting portions, and the second connecting portions are electrically connected to the corresponding first connecting portions. In the first direction, the orthographic projection of the opposite side of two adjacent rows of the first connecting portions on the printed circuit board is at least partially located within the orthographic projection of the corresponding second connecting portion on the printed circuit board.

6. The display device according to claim 5, characterized in that, In the first direction, the spacing between two adjacent rows of the first connecting parts is greater than the spacing between two corresponding adjacent rows of the second connecting parts.

7. The display device according to claim 5, characterized in that, The flexible circuit board is provided with two rows of first connecting portions, and the printed circuit board is provided with two rows of second connecting portions. In the first direction, the orthographic projection of the opposite side of the two rows of second connecting portions on the flexible circuit board is at least partially located within the orthographic projection of the corresponding first connecting portion on the flexible circuit board.

8. The display device according to any one of claims 5 to 7, characterized in that, In the first direction, the distance between the opposite side of the first connecting parts in two adjacent rows and the side of the corresponding second connecting part is greater than or equal to 50 micrometers and less than or equal to 120 micrometers.

9. The display device according to any one of claims 5 to 7, characterized in that, Each row of the first connecting portion includes a plurality of first connecting terminals spaced apart along the second direction, and each row of the second connecting portion includes a plurality of second connecting terminals spaced apart along the second direction. The second connecting terminals are arranged in one-to-one correspondence with the first connecting terminals, and the second connecting terminals are electrically connected to the corresponding first connecting terminals. The second direction forms an angle with the first direction. In the second direction, the orthographic projection of the opposite side of two adjacent first connection terminals on the printed circuit board is at least partially located within the orthographic projection of the corresponding second connection terminal on the printed circuit board.

10. The display device according to claim 9, characterized in that, In the second direction, the spacing between two adjacent first connection terminals is greater than the spacing between two corresponding adjacent second connection terminals.

11. The display device according to claim 5, characterized in that, The display device further includes a conductive adhesive layer disposed between the flexible circuit board and the printed circuit board, and between the flexible circuit board and the display panel; the conductive adhesive layer includes a plurality of conductive particles, the first connecting portion and the second connecting portion are electrically connected through the conductive particles, and the third connecting portion and the fourth connecting portion are electrically connected through the conductive particles.

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