Display device

Abstract

The invention provides a display device. The display device comprises a display panel, a flexible circuit board and a printed circuit board which are connected, a first display terminal and a second display terminal which are arranged in series in the display panel are respectively connected with a first flexible terminal and a second flexible terminal in the flexible circuit board in a binding mode, and the flexible circuit board further comprises a first measuring terminal and a second measuring terminal. The first measuring terminal is connected with the first flexible terminal, and the second measuring terminal is connected with the second flexible terminal; the first measuring terminal and the second measuring terminal are arranged on the surface, deviating from the binding side, of the flexible circuit board, so that the first measuring terminal, the second measuring terminal, the first flexible terminal, the second flexible terminal, the first display terminal and the second display terminal form a series loop; the measuring point of the binding impedance between the display panel and the flexible circuit board is moved from the printed circuit board to the flexible circuit board, the space of the printed circuit board is released, and the size of the printed circuit board is reduced.

Description

Technical Field

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

[0002] In an existing display device, one end of the flexible circuit board is usually bound and connected to a binding area of ​​a display panel, and the other end of the flexible circuit board is usually bound and connected to a printed circuit board.

[0003] In order to evaluate the stability of the product's binding process, it is usually necessary to test the binding impedance between the source driver chip and the display panel (Chip On Panel, COP), the binding impedance between the flexible circuit board and the display panel (FPC On Panel, FOP), and the binding impedance between the circuit board and the flexible circuit board (FPC on Board, FOB). The test points of the above three binding impedances are currently all set in the printed circuit board, which increases the size of the printed circuit board and compresses the placement space of components inside the display device, which is contrary to the current demand for ultra-narrow printed circuit boards. Summary of the invention

[0004] The present application provides a display device to improve the technical problem of a large size of a printed circuit board in an existing display device.

[0005] To solve the above-mentioned problems, the technical solutions provided by this application are as follows:

[0006] The present application proposes a display device, which includes:

[0007] The display panel comprises a display portion and a display binding portion arranged at one side of the display portion, wherein the display binding portion comprises a first display terminal and a second display terminal arranged in series;

[0008] A flexible circuit board, comprising a first binding portion and a second binding portion, wherein the first binding portion is bound and connected to the display binding portion, the first binding portion comprises a first flexible terminal and a second flexible terminal, the first flexible terminal is bound and connected to the first display terminal, and the second flexible terminal is bound and connected to the second display terminal;

[0009] A printed circuit board is arranged on a side of the flexible circuit board away from the display panel, and the printed circuit board includes a printed binding portion that is bound and connected to the second binding portion;

[0010] The flexible circuit board further includes a first measuring terminal and a second measuring terminal which are arranged on a side of the flexible circuit board away from the first binding portion, the first measuring terminal is connected to the first flexible terminal, and the second measuring terminal is connected to the second flexible terminal.

[0011] Optionally, the display binding portion further includes a first connecting portion provided between the first display terminal and the second display terminal, one end of the first connecting portion is electrically connected to the first display terminal, and the other end of the first connecting portion is electrically connected to the second display terminal.

[0012] Optionally, the flexible circuit board includes a base layer, a first test lead and a second test lead, the first binding portion and the second binding portion are arranged on a first side of the base layer, and the first measuring terminal and the second measuring terminal are arranged on a second side of the base layer opposite to the first side;

[0013] The first test lead and the second test lead pass through the base layer, and two ends of the first test lead are respectively connected to the first flexible terminal and the first measuring terminal, while two ends of the second test lead are respectively connected to the second flexible terminal and the second measuring terminal.

[0014] Optionally, an area of ​​the first measuring terminal is smaller than an area of ​​the first flexible terminal, and an area of ​​the second measuring terminal is smaller than an area of ​​the second flexible terminal.

[0015] Optionally, the second binding portion includes a third flexible terminal, a fourth flexible terminal and a second connecting portion, and two ends of the second connecting portion are respectively connected to the third flexible terminal and the fourth flexible terminal;

[0016] The printed binding portion includes a first printed terminal and a second printed terminal, the third flexible terminal is bound and connected to the first printed terminal, and the fourth flexible terminal is bound and connected to the second printed terminal;

[0017] Among them, the printed binding part also includes a third measuring terminal and a fourth measuring terminal, the third measuring terminal is electrically connected to the first printed terminal, the fourth measuring terminal is electrically connected to the second printed terminal, and the third measuring terminal and the fourth measuring terminal are both located on the same side of the printed circuit board as the printed binding part.

[0018] Optionally, areas of the first measuring terminal, the second measuring terminal, the third measuring terminal and the fourth measuring terminal are all equal.

[0019] Optionally, the display panel further comprises a driving binding portion which is bound and connected to the driving chip, the driving binding portion comprises a first driving terminal and a second driving terminal, the first driving terminal and the second driving terminal are respectively bound and connected to two terminals in series in the driving chip;

[0020] Wherein, the display binding part further includes a third display terminal arranged adjacent to the second display terminal, the second display terminal is electrically connected to the first driving terminal, and the third display terminal is electrically connected to the second driving terminal.

[0021] Optionally, the flexible circuit board includes:

[0022] a fifth flexible terminal, bound and connected to the third display terminal;

[0023] a fifth measuring terminal, arranged at the same layer as the first measuring terminal and the second measuring terminal;

[0024] A third test lead, two ends of which are respectively connected to the fifth measurement terminal and the fifth flexible terminal.

[0025] Optionally, the printed circuit board is arranged on the backlight side of the display panel, and part of the flexible circuit board is bent to the backlight side of the display panel;

[0026] Wherein, the display device further comprises a supporting structure arranged on the backlight side of the display panel, and the supporting structure is arranged between the display panel and the flexible circuit board.

[0027] Optionally, the thickness of the support structure is less than or equal to the thickness of the printed circuit board.

[0028] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0030] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0031] Figure 1 A structural diagram of a display device provided in an embodiment of the present application;

[0032] Figure 2 A first cross-sectional view of a display device provided in an embodiment of the present application;

[0033] Figure 3 A second cross-sectional view of the display device provided in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of a first position of a measuring terminal in a display device provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of a display panel, a flexible circuit board, and terminals in a printed circuit board in a display device provided in an embodiment of the present application;

[0036] Figure 6 This is a schematic diagram of a second position of a measuring terminal in a display device provided in an embodiment of the present application.

[0037] Reference numerals

[0038] Display device 100; carrying platform 200;

[0039] Display panel 10; display binding portion 110; display binding terminal 111; first display terminal 112a; second display terminal 112b; third display terminal 112c; first alignment mark 113; first connection portion 114;

[0040] Driving binding part 120; driving binding terminal 121; first driving terminal 122a; second driving terminal 122b; driving chip IC;

[0041] Flexible circuit board 20; first binding portion 210; first binding terminal 211; first flexible terminal 212a; second flexible terminal 212b; fifth flexible terminal 212c; second alignment mark 213;

[0042] The second binding portion 220; the second binding terminal 221; the third flexible terminal 222a; the fourth flexible terminal 222b; the third alignment mark 223; the second connecting portion 224;

[0043] A first measuring terminal 411 , a second measuring terminal 412 ; a third measuring terminal 413 ; a fourth measuring terminal 414 ; a fifth measuring terminal 415 ; a first test lead 421 ; a second test lead 422 ; and a third test lead 423 ;

[0044] Printed circuit board 30; printed binding portion 310; printed binding terminal 311; first printed terminal 312a; second printed terminal 312b; fourth alignment mark 313;

[0045] Support structure 40. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0047] See also Figures 1 to 6 The present application proposes a display device 100, which includes a display panel 10, a flexible circuit board 20 and a printed circuit board 30 connected to each other. For display devices 100 of different sizes, the present application can set different numbers of flexible circuit boards 20.

[0048] In this embodiment, the display panel 10 includes a display part AA and a display binding part 110 arranged on one side of the display part AA, the display binding part 110 includes a first display terminal 112a and a second display terminal 112b arranged in series; the flexible circuit board 20 includes a first binding part 210 and a second binding part 220, the first binding part 210 is bound and connected to the display binding part 110, the first binding part 210 includes a first flexible terminal 212a and a second flexible terminal 212b, the first flexible terminal 212a is bound and connected to the first display terminal 112a, and the second flexible terminal 212b is bound and connected to the second display terminal 112b; the printed circuit board 30 is arranged on a side of the flexible circuit board 20 away from the display panel 10, and the printed circuit board 30 includes a printed binding part 310 bound and connected to the second binding part 220.

[0049] In this embodiment, the flexible circuit board 20 further includes a first measuring terminal 411 and a second measuring terminal 412 disposed on a side of the flexible circuit board 20 away from the first binding portion 210 . The first measuring terminal 411 is connected to the first flexible terminal 212 a , and the second measuring terminal 412 is connected to the second flexible terminal 212 b .

[0050] In this embodiment, the printed circuit board 30 is arranged on the backlight side of the display panel 10, and part of the flexible circuit board 20 is bent to the backlight side of the display panel 10, that is, one end of the flexible circuit board 20 can be bound and connected to the display binding part 110, and the other end of the flexible circuit board 20 is bent to the back side of the display panel 10 and bound and connected to the printed binding part 310; the arrangement of the flexible circuit board 20 and the printed circuit board 30 can reduce the border width of the display device 100 to achieve a narrow border design of the product.

[0051] The present application sets a first measuring terminal 411 and a second measuring terminal 412 on the surface of the flexible circuit board 20 away from the binding side, so that the first measuring terminal 411, the second measuring terminal 412, the first flexible terminal 212a, the second flexible terminal 212b, the first display terminal 112a and the second display terminal 112b form a series loop, so as to move the measurement point of the binding impedance between the display panel 10 and the flexible circuit board 20 from the printed circuit board 30 to the flexible circuit board 20, thereby releasing the space of the printed circuit board 30, reducing the size of the printed circuit board 30, and realizing the ultra-narrow design of the printed circuit board 30, so that the interior of the display device 100 has more space for arranging other components, such as increasing the volume of the battery in the display device 100 to improve the battery life of the product.

[0052] It should be noted that, in order to facilitate the description of the technical solution of the present application, the present application can make the display panel 10, the printed circuit board 30 and the flexible circuit board 20 all be located on the same carrier 200 to facilitate the test of the binding impedance, for example Figure 3 The structure shown.

[0053] It should be noted that the display panel 10 can be an LCD panel, an OLED panel, or a MiniLED, MicroLED direct display panel, etc.

[0054] The technical solution of the present application is now described in conjunction with specific embodiments.

[0055] See also Figure 4 and Figure 5 The display binding unit 110 may include a plurality of display binding terminals 111 and a first alignment mark 113 disposed on both sides of the plurality of display binding terminals 111. The plurality of display binding terminals 111 include a first display terminal 112a and a second display terminal 112b for impedance testing. The first display terminal 112a and the second display terminal 112b are disposed adjacent to each other or at least one display binding terminal 111 is disposed between the first display terminal 112a and the second display terminal 112b.

[0056] See also Figure 4 and Figure 5 Since the first display terminal 112a and the second display terminal 112b are used to measure the binding impedance between the display panel 10 and the flexible circuit board 20, in order to form a series loop, the present application can set a first connecting portion 114 between the first display terminal 112a and the second display terminal 112b, one end of the first connecting portion 114 is electrically connected to the first display terminal 112a, and the other end of the first connecting portion 114 is electrically connected to the second display terminal 112b.

[0057] In this embodiment, the first connection portion 114 may be a U-shaped structure, and two ends of the U-shaped structure are respectively connected to the first display terminal 112 a and the second display terminal 112 b .

[0058] In this embodiment, the first display terminal 112 a , the second display terminal 112 b and the first connection portion 114 may be formed in the same photomask process as other display binding terminals 111 in the display binding portion 110 .

[0059] See also Figure 5 The first binding portion 210 includes multiple first binding terminals 211 and second alignment marks 213 arranged on both sides of the multiple first binding terminals 211, and the first alignment mark 113 is aligned and bound with the second alignment mark 213; a first binding terminal 211 is bound and connected to a first display terminal 112a, and the multiple first binding terminals 211 include a first flexible terminal 212a and a second flexible terminal 212b for impedance testing, the first flexible terminal 212a corresponds to and is bound to the first display terminal 112a, and the second flexible terminal 212b corresponds to and is bound to the second display terminal 112b.

[0060] That is, the present application sets a first connection portion 114 in series with the first display terminal 112a and the second display terminal 112b in the display binding portion 110, so that the first display terminal 112a and the second display terminal 112b are directly connected in series, so that the first measuring terminal 411, the second measuring terminal 412, the first flexible terminal 212a, the second flexible terminal 212b, the first display terminal 112a and the second display terminal 112b form a series loop, for example Figure 4 Test point 3 and test point 4 form a loop, and test point 8 and test point 9 form a loop, so as to move the measurement point of the binding impedance between the display panel 10 and the flexible circuit board 20 from the printed circuit board 30 to the flexible circuit board 20, thereby freeing up space on the printed circuit board 30.

[0061] See also Figure 2 The flexible circuit board 20 includes a base layer, a first binding portion 210 and a second binding portion 220 are arranged on a first side of the base layer, and a first measuring terminal 411 and a second measuring terminal 412 are arranged on a second side of the base layer opposite to the first side.

[0062] In this embodiment, since the first flexible terminal 212a and the second flexible terminal 212b are located on the binding side of the flexible circuit board 20, if the first measuring terminal 411 and the second measuring terminal 412 are both set on the same side as the terminals on the binding side, the impedance testing fixture cannot obtain the first measuring terminal 411 and the second measuring terminal 412.

[0063] In this embodiment, the flexible circuit board 20 also includes a first test lead 421 and a second test lead 422. The first test lead 421 and the second test lead 422 pass through the base layer, and the two ends of the first test lead 421 are respectively connected to the first flexible terminal 212a and the first measurement terminal 411, and the two ends of the second test lead 422 are respectively connected to the second flexible terminal 212b and the second measurement terminal 412.

[0064] That is, the first measuring terminal 411, the first flexible terminal 212a, the first display terminal 112a and the first test lead 421 of the present application are the first test segment of the FOP, the second measuring terminal 412, the second flexible terminal 212b, the second display terminal 112b and the second test lead 422 are the second test segment of the FOP, and the first connecting part 114 connects the first test segment of the FOP and the second test segment of the FOP in series so that the first test segment of the FOP and the second test segment of the FOP form a series loop to measure the binding impedance between the display panel 10 and the flexible circuit board 20.

[0065] In this embodiment, since the measuring terminal is only used to connect to the impedance test fixture, the area of ​​the measuring terminal does not need to be large. The present application can make the area of ​​the first measuring terminal 411 smaller than the area of ​​the first flexible terminal 212a, and the area of ​​the second measuring terminal 412 smaller than the area of ​​the second flexible terminal 212b.

[0066] See also Figure 3 The second binding portion 220 includes a plurality of second binding terminals 221 and a third alignment mark 223 disposed on both sides of the plurality of second binding terminals 221. The printed circuit board 30 includes a plurality of printed binding terminals 311 and a fourth alignment mark 313 disposed on both sides of the plurality of printed binding terminals 311. The third alignment mark 223 is aligned and bound with the fourth alignment mark 313. A second binding terminal 221 is bound and connected with a printed binding terminal 311.

[0067] In this embodiment, the multiple second binding terminals 221 may include a third flexible terminal 222a and a fourth flexible terminal 222b, and the multiple printed binding terminals 311 may include a first printed terminal 312a and a second printed terminal 312b, the third flexible terminal 222a and the first printed terminal 312a are bound and connected, and the fourth flexible terminal 222b and the second printed terminal 312b are bound and connected.

[0068] In this embodiment, for the binding impedance test between the flexible circuit board 20 and the printed circuit board 30, the present application can set a second connecting portion 224 on the flexible circuit board 20, and the two ends of the second connecting portion 224 are respectively connected to the third flexible terminal 222a and the fourth flexible terminal 222b, so that the first printed terminal 312a, the second printed terminal 312b, the third flexible terminal 222a and the fourth flexible terminal 222b form a series circuit.

[0069] At the same time, the printed binding part 310 also includes a third measuring terminal 413 and a fourth measuring terminal 414, the third measuring terminal 413 is electrically connected to the first printed terminal 312a, the fourth measuring terminal 414 is electrically connected to the second printed terminal 312b, and the third measuring terminal 413 and the fourth measuring terminal 414 are both located on the same side of the printed circuit board 30 as the printed binding part 310.

[0070] In this embodiment, since the binding side of the printed circuit board 30 corresponds to the impedance test fixture, the measuring terminal on the printed circuit board 30 can be set on the same side as the printed binding terminal 311; the printed circuit board 30 can also be provided with a test lead connected for binding impedance testing.

[0071] In this embodiment, the areas of the first measuring terminal 411 , the second measuring terminal 412 , the third measuring terminal 413 and the fourth measuring terminal 414 are all equal.

[0072] In this embodiment, due to the limitation of the terminal arrangement space, the terminal areas in different structures are different; at the same time, due to the existence of errors in alignment binding, the present application can make the area of ​​the first binding terminal 211 larger than the area of ​​the display binding terminal 111, and the area of ​​the printed binding terminal 311 can be larger than the area of ​​the second binding terminal 221.

[0073] That is, the first printed terminal 312a, the third flexible terminal 222a and the third measuring terminal 413 are the first test section of the FOB, the second printed terminal 312b, the fourth flexible terminal 222b and the fourth measuring terminal 414 are the second test section of the FOB, and the second connecting portion 224 connects the first test section of the FOB and the second test section of the FOB in series, so that the first test section of the FOB and the second test section of the FOB form a series loop to measure the binding impedance between the printed circuit board 30 and the flexible circuit board 20; for example Figure 4 The test points 1 and 2 in the circuit form a loop, and the test points 6 and 7 in the circuit form a loop.

[0074] Please see attached Figure 6The third measuring terminal 413 and the fourth measuring terminal 414 can be arranged on the flexible circuit board 20, and the second connecting portion 224 can be arranged on the printed circuit board 30. The second connecting portion 224 is used to connect the first printed terminal 312a and the second printed terminal 312b in series in the printed circuit board to move the measuring point of the binding impedance between the printed circuit board 30 and the flexible circuit board 20 from the printed circuit board 30 to the flexible circuit board 20, thereby further freeing up the space of the printed circuit board 30; for example Figure 6 The test points 1 and 2 in the circuit form a loop, and the test points 6 and 7 in the circuit form a loop.

[0075] See also Figure 4 The display panel 10 also includes a driving binding unit 120 bound to the driving chip IC. The driving binding unit 120 includes a plurality of driving binding terminals 121. The plurality of driving binding terminals 121 include a first driving terminal 122a and a second driving terminal 122b. The first driving terminal 122a and the second driving terminal 122b are respectively bound to two terminals in series in the driving chip IC, that is, the driving binding terminal 121 can be reused as a terminal for impedance testing.

[0076] In this embodiment, since there is not enough space in the driver chip IC and the display panel 10 to set the measurement terminals, the present application can set the test points of the binding impedance of the driver chip IC and the display panel 10 on the flexible circuit board 20.

[0077] See also Figure 5 The display binding unit 110 further includes a third display terminal 112c disposed adjacent to the second display terminal 112b, the second display terminal 112b is electrically connected to the first driving terminal 122a, and the third display terminal 112c is electrically connected to the second driving terminal 122b.

[0078] At the same time, the flexible circuit board 20 can also include a fifth flexible terminal 212c, a fifth measuring terminal 415 and a third test lead 423. The fifth flexible terminal 212c is bound and connected to the third display terminal 112c. The fifth measuring terminal 415 is arranged on the same layer as the first measuring terminal 411 and the second measuring terminal 412. The two ends of the third test lead 423 are respectively connected to the fifth measuring terminal 415 and the fifth flexible terminal 212c.

[0079] Therefore, the electrically connected second display terminal 112b, the first drive terminal 122a, the second flexible terminal 212b, and the second measuring terminal 412 of the present application form a first test section of COP and FOP, and the electrically connected third display terminal 112c, the second drive terminal 122b, the fifth flexible terminal 212c, and the fifth measuring terminal 415 form a second test section of COP and FOP. The two terminals connected in series in the driver chip IC form a series loop with the first test section of COP and FOP and the second test section of COP and FOP to measure the binding impedance between the display panel 10 and the flexible circuit board 20, and the binding impedance between the driver chip IC and the display panel 10. Since the first measuring terminal 411 and the second measuring terminal 412 can obtain the binding impedance between the display panel 10 and the flexible circuit board 20, the binding impedance between the driver chip IC and the display panel 10 of the present application can be obtained according to the difference between the impedance measured between the fifth measuring terminal 415 and the second measuring terminal 412 and the impedance measured between the first measuring terminal 411 and the second measuring terminal 412; for example Figure 4 and Figure 6 The test points 4 and 5 in the circuit form a loop, and the test points 9 and 10 in the circuit form a loop.

[0080] The present application can form a test loop for the binding impedance of COP and FOP by setting three measuring terminals on the flexible circuit board 20 and utilizing the three flexible terminals in the flexible circuit board 20 and the three display binding terminals 111 in the display panel 10. Meanwhile, the measuring terminals in the FOB can also be set on the flexible circuit board 20 to transfer all the measuring terminals on the original printed circuit board 30 to the flexible circuit board 20, thereby freeing up space on the printed circuit board 30 and reducing the size of the printed circuit board 30.

[0081] It should be noted that the impedance measurement terminal used in the present application can be used only for impedance testing without the need for signal transmission.

[0082] See also Figure 2 and Figure 3 The display device 100 also includes a support structure 40 disposed on the backlight side of the display panel 10, and the support structure 40 is disposed between the display panel 10 and the flexible circuit board 20; when performing an impedance test, since the impedance test fixture needs to contact the measuring terminals on the flexible circuit board 20, the provision of the support structure 40 increases the contact stability between the impedance test fixture and the flexible circuit board 20, thereby improving the accuracy of the impedance test.

[0083] In this embodiment, the material of the support structure 40 may be foam.

[0084] In this embodiment, since the flexible circuit board 20 needs to be bent to the back side of the display panel 10, in order to improve the binding stability between the flexible circuit board 20 and the printed circuit board 30, the present application can make the thickness of the support structure 40 less than or equal to the thickness of the printed circuit board 30, that is, to ensure that the binding surfaces of the flexible circuit board 20 and the printed circuit board 30 are as close to the same plane as possible.

[0085] It should be noted that the attached Figure 2 and attached Figure 3 The foam 40 is only a schematic diagram, and the size of the foam in this application shall be subject to the description.

[0086] It should be noted that the display device of the present application can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc.

[0087] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0088] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0089] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0090] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display device, characterized in that: include: The display panel comprises a display portion and a display binding portion provided at one side of the display portion, wherein the display binding portion comprises a first display terminal and a second display terminal provided in series; A flexible circuit board, comprising a first binding portion and a second binding portion, wherein the first binding portion is bound and connected to the display binding portion, the first binding portion comprises a first flexible terminal and a second flexible terminal, the first flexible terminal is bound and connected to the first display terminal, and the second flexible terminal is bound and connected to the second display terminal; A printed circuit board is arranged on a side of the flexible circuit board away from the display panel, and the printed circuit board includes a printed binding portion that is bound and connected to the second binding portion; The flexible circuit board further includes a first measuring terminal and a second measuring terminal which are arranged on a side of the flexible circuit board away from the first binding portion, the first measuring terminal is connected to the first flexible terminal, and the second measuring terminal is connected to the second flexible terminal.

2. The display device according to claim 1, characterized in that The display binding portion further includes a first connecting portion disposed between the first display terminal and the second display terminal, one end of the first connecting portion being electrically connected to the first display terminal, and the other end of the first connecting portion being electrically connected to the second display terminal.

3. The display device according to claim 2, characterized in that: The flexible circuit board comprises a base layer, a first test lead and a second test lead, the first binding portion and the second binding portion are arranged on a first side of the base layer, and the first measuring terminal and the second measuring terminal are arranged on a second side of the base layer opposite to the first side; The first test lead and the second test lead pass through the base layer, and two ends of the first test lead are respectively connected to the first flexible terminal and the first measuring terminal, while two ends of the second test lead are respectively connected to the second flexible terminal and the second measuring terminal.

4. The display device according to claim 3, characterized in that: An area of ​​the first measuring terminal is smaller than an area of ​​the first flexible terminal, and an area of ​​the second measuring terminal is smaller than an area of ​​the second flexible terminal.

5. The display device according to claim 3, characterized in that: The second binding portion includes a third flexible terminal, a fourth flexible terminal and a second connecting portion, and two ends of the second connecting portion are respectively connected to the third flexible terminal and the fourth flexible terminal; The printed binding portion includes a first printed terminal and a second printed terminal, the third flexible terminal is bound and connected to the first printed terminal, and the fourth flexible terminal is bound and connected to the second printed terminal; Among them, the printed binding part also includes a third measuring terminal and a fourth measuring terminal, the third measuring terminal is electrically connected to the first printed terminal, the fourth measuring terminal is electrically connected to the second printed terminal, and the third measuring terminal and the fourth measuring terminal are both located on the same side of the printed circuit board as the printed binding part.

6. The display device according to claim 5, characterized in that: The areas of the first measuring terminal, the second measuring terminal, the third measuring terminal and the fourth measuring terminal are all equal.

7. The display device according to claim 5, characterized in that: The display panel further comprises a driving binding part which is bound and connected to the driving chip, wherein the driving binding part comprises a first driving terminal and a second driving terminal, wherein the first driving terminal and the second driving terminal are respectively bound and connected to two terminals in series in the driving chip; Wherein, the display binding part further includes a third display terminal arranged adjacent to the second display terminal, the second display terminal is electrically connected to the first driving terminal, and the third display terminal is electrically connected to the second driving terminal.

8. The display device according to claim 7, characterized in that: The flexible circuit board comprises: a fifth flexible terminal, bound and connected to the third display terminal; a fifth measuring terminal, arranged at the same layer as the first measuring terminal and the second measuring terminal; A third test lead, two ends of which are respectively connected to the fifth measurement terminal and the fifth flexible terminal.

9. The display device according to any one of claims 1 to 8, characterized in that: The printed circuit board is arranged on the backlight side of the display panel, and part of the flexible circuit board is bent to the backlight side of the display panel; Wherein, the display device further comprises a supporting structure arranged on the backlight side of the display panel, and the supporting structure is arranged between the display panel and the flexible circuit board.

10. The display device according to claim 9, characterized in that: The thickness of the support structure is less than or equal to the thickness of the printed circuit board.

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