CN106959529B

CN106959529B - Display panel, display device and display panel binding detection method

Info

Publication number: CN106959529B
Application number: CN201710184029.3A
Authority: CN
Inventors: 李保然; 张雷; 方振中; 贺晓悦; 郭总杰
Original assignee: BOE Technology Group Co Ltd; Hefei Xinsheng Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei Xinsheng Optoelectronics Technology Co Ltd
Priority date: 2017-03-24
Filing date: 2017-03-24
Publication date: 2020-11-13
Anticipated expiration: 2037-03-24
Also published as: CN106959529A

Abstract

The invention provides a display panel, a display device and a binding detection method of the display panel, wherein a first input electrode T1 and a second input electrode T2 are arranged on a display module 1, a first output electrode F1 and a second output electrode F2 are arranged on an FPC2, after the display module 1 is bound with the FPC2, a group of detection circuits are formed by a T1, a T2, an F1, an F2, a conductive contact piece in a binding region 10 of the display module 1 and a conductive contact piece in a binding region 20 of the FPC2, and electric signals output by the first output electrode F1 and the second output electrode F2 are detected by loading the electric signals on the first input electrode T1 and the second input electrode T2 respectively, so that whether the binding of the display module 1 and the FPC2 is normal or not can be accurately and quickly detected, the binding problem can be found and timely processed, and the product yield is improved.

Description

Display panel, display device and display panel binding detection method

Technical Field

The invention relates to the technical field of display, in particular to a display panel, a display device and a display panel binding detection method.

Background

Bonding is an indispensable process in the field of liquid crystal display, especially in the field of touch screens. As shown in fig. 1, the bonding process is to connect the conductive contact pads in the bonding region of the FPC (Flexible Printed Circuit) 2 and the conductive contact pads in the bonding region of the display module 1 together through an ACF (conductive particle adhesive) 3. Specifically, the ACF3 is coated in the bonding area of the display module 1, and then the FPC2 is aligned with the ACF3, and then the FPC2 is connected to the display module 1 by pressing with a pressing device, which is called a bonding process. However, in the binding process, many problems occur, which are most frequently binding offset and binding open circuit, and the product yield is seriously affected.

The cross marks 4 are respectively arranged in the binding area of the FPC2 and the binding area of the display module 1, and the existing binding process realizes accurate alignment of the FPC2 and the display module 1 by aligning the cross marks 4 on the FPC2 and the cross marks 4 on the display module 1. Because cross mark 4 is great, the edge that FPC2 and display module assembly 1 reserved is great, when taking place to bind the skew, is difficult to discover, and FPC2 is thick and opaque moreover, and cross mark 4 is difficult to see, in case take place to bind the skew and bind the open circuit, can't directly show out, influences the product yield.

Disclosure of Invention

The present invention provides a display panel, a display device and a display panel binding detection method for solving at least part of the problems that binding offset and binding open circuit cannot be found in time.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides a display panel, which comprises a display module and a Flexible Printed Circuit (FPC), wherein a plurality of conductive contact pieces are arranged in a binding region of the display module and a binding region of the FPC, and the display panel is characterized in that a first input electrode T1 and a second input electrode T2 for inputting electric signals are arranged on the display module, and a first output electrode F1 and a second output electrode F2 for outputting the electric signals are arranged on the FPC;

the first input electrode T1, the second input electrode T2, the conductive contact of the display module and the conductive contact of the FPC, the first output electrode F1 and the second output electrode F2 form a group of detection circuits for detecting whether the display module and the FPC are normally bonded.

Preferably, the conductive contact of the display module includes: the first input electrode T1 is connected with the second conductive contact piece (11), the second input electrode T2 is connected with the second conductive contact piece (12), and the first conductive contact piece is positioned on one side, away from the second conductive contact piece (11), of the second conductive contact piece (12);

the FPC conductive contact piece comprises a plurality of I-shaped third conductive contact pieces, a third conductive contact piece (21) bound with a second conductive contact piece (11) connected with a first input electrode T1 is connected with the first output electrode F1, a third conductive contact piece (24) bound with one end (14) of the first conductive contact piece is connected with the second output electrode F2, the third conductive contact piece (22) is connected with a third conductive contact piece (23), the third conductive contact piece (22) is bound with a second conductive contact piece (12) connected with a second input electrode T2, and the third conductive contact piece (23) is bound with the other end (13) of the first conductive contact piece.

Preferably, the edges of the display module and the FPC are provided with cross marks for alignment;

the second conductive contact (11) and the second conductive contact (12) are arranged adjacently and are adjacent to the cross mark on the display module; the third conductive contact piece (21) and the third conductive contact piece (22) are arranged adjacently and are adjacent to the cross mark on the FPC.

Preferably, a plurality of second conductive contacts are provided between the first conductive contacts and the second conductive contacts (12).

Preferably, the number of second conductive contacts arranged between the first conductive contacts and the second conductive contacts (12) is greater than or equal to 10.

Preferably, the first input electrode T1, the second input electrode T2, the first output electrode F1 and the second output electrode F2 are all provided in plural numbers, so as to form plural sets of the detection circuits, and the detection circuits of the respective sets are uniformly distributed on the display panel.

According to the invention, the first input electrode T1 and the second input electrode T2 are arranged on the display module 1, the first output electrode F1 and the second output electrode F2 are arranged on the FPC2, after the display module 1 is bound with the FPC2, the T1, the T2, the F1 and the F2, the conductive contact sheet in the binding region 10 of the display module 1 and the conductive contact sheet in the binding region 20 of the FPC2 form a group of detection circuits, and the electric signals output by the first output electrode F1 and the second output electrode F2 are detected by loading the electric signals on the first input electrode T1 and the second input electrode T2 respectively, so that whether the binding of the display module 1 and the FPC2 is normal can be accurately and rapidly detected, the binding problem can be timely found and timely treated, and the product yield is improved.

The invention also provides a display device comprising the display panel.

The invention also provides a display panel binding detection method, which is used for detecting the display panel and comprises the following steps:

applying a first electrical signal to the first input electrode T1 and detecting whether an output electrical signal is present at the first output electrode F1;

applying a second electrical signal to the second input electrode T2 and detecting whether an output electrical signal is present at the second output electrode F2;

and judging whether the display module and the FPC are normally bound or not according to whether the first output electrode F1 and the second output electrode F2 output electric signals or not.

Preferably, the determining whether the display module and the FPC are normally bonded according to whether the first output electrode F1 and the second output electrode F2 output electric signals includes:

if the first output electrode F1 and the second output electrode F2 both output electric signals, determining that the display module and the FPC are normally bound;

if one output electrode of the first output electrode F1 and the second output electrode F2 has an output electric signal, and the other output electrode does not have the output electric signal, determining that the display module and the FPC are bound and disconnected;

and if no electric signal is output by the first output electrode F1 and the second output electrode F2, determining the binding offset of the display module and the FPC.

Further, after determining that the display module and the FPC are bound to be disconnected, the method further includes:

and determining an open circuit area as the areas of the third conductive contact connected with the output electrode without the output electric signal and the plurality of adjacent third conductive contacts.

The invention can realize the following beneficial effects:

the invention separately loads electric signals to the first input electrode T1 and the second input electrode T2, and respectively judges whether the corresponding output electrodes output the electric signals, if both the two output electrodes output the electric signals, the display module 1 and the FPC2 are considered to be normally bound, and if at least one output electrode does not output the electric signals, the display module 1 and the FPC2 are considered to be abnormally bound. The detection method is simple and effective, can quickly and accurately judge the binding condition of the display module 1 and the FPC2, can timely find the binding problem and timely process the binding problem, and improves the yield of the display panel and the display device.

Drawings

FIG. 1 is a schematic cross-sectional view of a display module normally bonded to an FPC;

FIG. 2a is a schematic structural diagram of a bonding region of a display module according to the present invention;

FIG. 2b is a schematic structural diagram of the FPC of the present invention;

FIG. 3 is a schematic cross-sectional view illustrating a binding offset between a display module and an FPC according to the present invention;

FIG. 4 is a schematic diagram of a display module and an FPC with a bound open circuit according to the present invention;

FIG. 5 is a flowchart illustrating a method for detecting a display panel binding according to the present invention.

Illustration of the drawings:

1. display module 2, FPC 3, ACF 4, cross mark

10. Binding region 20, binding

regions

11, 12, 17, 18, second conductive contact

21 to 28, third

conductive contacts

13, 14, one end of the first conductive contact

15. 16, one end of the first conductive contact

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The invention provides a scheme capable of quickly and accurately detecting whether the binding of the display module and the FPC is normal or not, further determining that the reason of the abnormal binding is binding deviation or binding open circuit, and if the binding open circuit occurs, positioning the open circuit area, and timely finding out the binding problem and timely processing the binding problem, thereby improving the product yield.

The invention provides a display panel, as shown in fig. 2a and 2b, the display panel comprises a display module 1 and an FPC2, wherein a plurality of conductive contact pads (11-18 in fig. 2 a) are arranged in a binding region 10 of the display module 1, and a plurality of conductive contact pads (21-28 in fig. 2 a) are arranged in a binding region 20 of the FPC 2.

The display module 1 is provided with a first input electrode T1 and a second input electrode T2 for inputting electrical signals, and the first input electrode T1 and the second input electrode T2 are respectively connected with two conductive contact pieces of the display module 1. The FPC2 is provided with a first output electrode F1 and a second output electrode F2 for outputting an electric signal, and the first output electrode F1 and the second output electrode F2 are connected to two conductive contact pads on the FPC2, respectively. The first input electrode T1, the second input electrode T2, the conductive contact of the display module 1, the conductive contact of the FPC2, the first output electrode F1 and the second output electrode F2 form a set of detection circuits for detecting whether the display module 1 and the FPC2 are normally bonded.

Preferably, the electrical signal is a voltage signal, that is, a first voltage signal and a second voltage signal for detection are applied to the first input electrode T1 and the second input electrode T2, respectively, and the first voltage signal and the second voltage signal may be the same or different. Correspondingly, the first output electrode F1 and the second output electrode F2 output voltage signals, which are typically 5-12 v.

According to the invention, the first input electrode T1 and the second input electrode T2 are arranged on the display module 1, the first output electrode F1 and the second output electrode F2 are arranged on the FPC2, after the display module 1 is bound with the FPC, the T1, the T2, the F1, the F2, the conductive contact sheet in the binding region 10 of the display module 1 and the conductive contact sheet in the binding region 20 of the FPC2 form a group of detection circuits, and the electric signals output by the F1 and the F2 are detected by loading the electric signals on the T1 and the T2 respectively, so that whether the display module 1 and the FPC2 are bound normally or not can be accurately and quickly detected, the binding problem can be found in time and can be timely processed, and the product yield is improved.

The structure of the conductive contact pads on the display module 1 and the conductive contact pads on the FPC2, and the connection relationship with the input electrodes and the output electrodes will be described in detail below with reference to fig. 2a and 2 b.

As shown in fig. 2a, the conductive contacts of the display module 1 include a first conductive contact and a plurality of second conductive contacts, the first conductive contact is H-shaped, the second conductive contacts are I-shaped, and the second conductive contacts are arranged in parallel, and fig. 2a shows the second

conductive contacts

11, 12, 17, 18.

As shown in fig. 2b, the conductive contacts of FPC2 include a plurality of third conductive contacts that are I-shaped, with the third conductive contacts being arranged in parallel, and fig. 2b shows third

conductive contacts

21, 22, 23, 24, 25, 26, 27, 28.

Taking as an example a set of detection circuits formed by the first input electrode T1, the second input electrode T2, the first conductive contact, the second conductive contact, the third conductive contact, the first output electrode F1 and the second output electrode F2, the first conductive contact includes two ends 13, 14 for connecting to the third conductive contact on the FPC2, and the first conductive contact is located on the side of the second conductive contact 12 away from the second conductive contact 11. The first input electrode T1 is connected to the second conductive contact 11 and the second input electrode T2 is connected to the second conductive contact 12. The third conductive contact 21 bound to the second conductive contact 11 connected to the first input electrode T1 is connected to the first output electrode F1, i.e., the third conductive contact 21 is bound to the second conductive contact 11 and connected to the first output electrode F1. The third conductive contact 24 bound to one end 14 of the first conductive contact is connected to the second output electrode F2, i.e. the third conductive contact 24 is bound to one end 14 of the first conductive contact and is connected to the second output electrode F2. The third conductive contact 22 is connected to the third conductive contact 23 and bound to the second conductive contact 12 connected to the second input electrode T2, and the third conductive contact 23 is bound to the other end 13 of the first conductive contact.

In order to simplify the circuit design of the display module, to make the wiring beautiful, and not to affect the wiring of other metal wires, it is preferable that the second

conductive contacts

11 and 12 are adjacently disposed and adjacent to the cross mark 4 on the display module 1, and correspondingly, the third

conductive contacts

21 and 22 bound to the second

conductive contacts

11 and 12, respectively, are also adjacently disposed and adjacent to the cross mark 4 on the FPC 2.

It should be noted that the second conductive contact 11 and the second conductive contact 12 may not be adjacent to each other without affecting other wiring.

As shown in fig. 2a, a plurality of second conductive contacts are provided between the first and second conductive contacts 12. Since the outermost second conductive contact (i.e., the second conductive contact 11) and the first conductive contacts define a coverage area of a set of detection circuits, which is the detection area, the number of second conductive contacts disposed between the first conductive contacts and the second conductive contacts 12 determines the size of the detection area, wherein the more second conductive contacts between the first conductive contacts and the second conductive contacts 12, the larger the detection area, and the less second conductive contacts between the first conductive contacts and the second conductive contacts 12, the smaller the detection area.

Preferably, the number of second conductive contacts disposed between the first and second conductive contacts 12 is greater than or equal to 10. In an embodiment of the invention, as shown in fig. 2b, 10 second conductive contacts are arranged between the second conductive contacts 12 and one end 13 of the first conductive contacts.

It should be noted that, a plurality of first input electrodes T1, a plurality of second input electrodes T2, a plurality of first output electrodes F1, and a plurality of second output electrodes F2 may be disposed to form a plurality of groups of detection circuits, and the groups of detection circuits are uniformly distributed on the display panel, so that the bonding area of the display panel may be uniformly divided into a plurality of detection areas, and the detection of the bonding area of the entire display panel may be achieved by detecting each detection area.

In the embodiment of the present invention, the whole display panel forms two groups of detection circuits, the two groups of detection circuits are respectively located at two ends of the bonding region of the display panel, one group of detection circuits located at the left side in fig. 2a and 2b is a first group of detection circuits, and one group of detection circuits located at the right side in fig. 2a and 2b is a second group of detection circuits. In the second group of detection circuits, the first input electrode is T1 ', the second input electrode is T2', the first output electrode is F1 ', and the second output electrode is F2'. Wherein the first input electrode T1 ', the second conductive contact 18, the third conductive contact 28, and the first output electrode F1' form a detection circuit; the second input electrode T2 ', the second conductive contact 17, the third conductive contact 27, the third conductive contact 26, the two ends 16 and 15 of the first conductive contact, the third conductive contact 25 and the second output electrode F2' form another detection circuit.

The following describes in detail a detection process of the display panel to detect whether the display module 1 and the FPC2 are normally bonded, by taking the first group of detection circuits as an example, with reference to fig. 2a and fig. 2 b.

And respectively loading electric signals to the first input electrode T1 and the second input electrode T2, respectively detecting whether the first output electrode F1 and the second output electrode F2 have output electric signals, and judging whether the display module 1 and the FPC2 are normally bound according to whether the first output electrode F1 and the second output electrode F2 have the output electric signals. Specifically, if the first output electrode F1 and the second output electrode F2 both output electric signals, it indicates that the display module 1 and the FPC2 are normally bound; if at least one of the first output electrode F1 and the second output electrode F2 does not output an electrical signal, it indicates that the display module 1 and the FPC2 are abnormally bonded. If no electric signal is output by the first output electrode F1 and the second output electrode F2, the binding offset between the display module 1 and the FPC2 is indicated; if one of the first output electrode F1 and the second output electrode F2 has an output electrical signal, and the other has no output electrical signal, it indicates that the display module 1 and the FPC2 are bound and disconnected.

When the display module 1 and the FPC2 are detected to be bound to each other to be broken, the position of the broken region, that is, the region where the third conductive contact connected to the output electrode without the output electrical signal and the plurality of adjacent third conductive contacts are located, may be further determined.

An embodiment of the present invention further provides a display device, where the display device includes the display panel described above, and the structure of the display panel is not described herein again.

The display module 1 is provided with the first input electrode T1 and the second input electrode T2, the FPC2 is provided with the first output electrode F1 and the second output electrode F2, after the display module 1 is bound with the FPC2, the T1, the T2, the F1, the F2, the conductive contact pieces in the binding region of the display module 1 and the conductive contact pieces in the binding region of the FPC2 form a group of detection circuits, and the electric signals output by the F1 and the F2 are detected by loading the electric signals on the T1 and the T2 respectively, so that whether the display module 1 and the FPC2 are normally bound or not can be accurately and quickly detected, the binding problem can be timely found and timely processed, and the product yield is improved.

An embodiment of the present invention further provides a display panel binding detection method, where the method is used to detect the display panel, and as shown in fig. 5, fig. 2a, fig. 2b, fig. 3, and fig. 4, the method includes the following steps:

step 51, load the first electrical signal to the first input electrode T1, and detect whether there is an output electrical signal at the first output electrode F1.

Specifically, the first electrical signal is a voltage signal, and if the first output electrode F1 has an output voltage signal, it indicates that the detection circuit formed by the first input electrode T1, the second conductive contact 11, the third conductive contact 21, and the first output electrode F1 is turned on, and the second conductive contact 11 and the third conductive contact 21 are normally bonded.

Step 52, load the second electrical signal to the second input electrode T2, and detect whether there is an output electrical signal at the second output electrode F2.

Specifically, the second electrical signal is a voltage signal, if the second output electrode F2 has an output voltage signal, it indicates that the detection circuit formed by the second input electrode T2, the second conductive contact 12, the third conductive contact 22, the first conductive contact, the third

conductive contacts

23 and 24, and the second output electrode F2 is on, the second conductive contact 12 and the third conductive contact 22 are normally bound, and the two ends 13 and 14 of the first conductive contact are normally bound to the third

conductive contacts

23 and 24, respectively.

It should be noted that before step 52 is executed, the first electric signal is stopped from being applied to the first input electrode T1, that is, step 51 is to apply the first electric signal to the first input electrode T1 alone (at this time, the second electric signal is not applied to the second input electrode T2), and step 52 is to apply the second electric signal to the second input electrode T2 alone (at this time, the first electric signal is not applied to the first input electrode T1).

And step 53, judging whether the display module and the FPC are normally bound according to whether the first output electrode F1 and the second output electrode F2 output electric signals.

Specifically, if the first output electrode F1 and the second output electrode F2 both output electric signals, it indicates that both of the detection circuits in the set of detection circuits are turned on, and therefore it is determined that the display module 1 and the FPC2 are normally bonded. If at least one of the first output electrode F1 and the second output electrode F2 does not output an electric signal, it indicates that at least one of the detection circuits in the group of detection circuits is not conducted, and therefore it is determined that the display module 1 and the FPC2 are abnormally bound.

The abnormal binding of the display module 1 and the FPC2 is divided into two conditions of binding offset and binding open circuit. If no electrical signal is output from both the first output electrode F1 and the second output electrode F2, the binding offset between the display module 1 and the FPC2 is determined. Fig. 3 is a schematic cross-sectional view of the display module 1 and the FPC2 with binding offset, as shown in fig. 3, when the display module 1 and the FPC2 are bound and offset, the first conductive contact and the second conductive contact on the display module 1 and the third conductive contact on the FPC2 are dislocated, and two detection circuits in a set of detection circuits cannot be conducted, so that no electric signal is output from the first output electrode F1 and the second output electrode F2.

If one of the first output electrode F1 and the second output electrode F2 has an output electric signal, and the other output electrode does not have the output electric signal, the display module 1 and the FPC2 are bound and disconnected. When the display module 1 and the FPC2 are bound and disconnected, if the third conductive contact covered by the disconnection area is the third conductive contact forming the detection circuit, the output electrode of the corresponding detection circuit does not output an electrical signal, and thus, it can be determined that the bound disconnection occurs.

It can be seen from the above steps 51-53 that, in the present invention, electrical signals are independently loaded to the first input electrode T1 and the second input electrode T2, and whether the corresponding output electrodes output electrical signals is respectively determined, if both output electrodes output electrical signals, it is determined that the display module 1 and the FPC2 are normally bound, and if at least one output electrode does not output an electrical signal, it is determined that the display module 1 and the FPC2 are abnormally bound. The detection method is simple and effective, can quickly and accurately judge the binding condition of the display module 1 and the FPC2, can timely find the binding problem and timely process the binding problem, and improves the yield of the display panel and the display device.

Further, after detecting that the display module 1 and the FPC2 are bound and disconnected, the display panel binding detection method may further include the steps of:

As shown in fig. 4, if there is an output electrical signal at the first output electrode F1 and there is no output electrical signal at the second output electrode F2, it is determined that the display module 1 is bound to the FPC2 and the open circuit region is further determined to be the region where the third conductive contact 24 and the plurality of third conductive contacts adjacent to the third conductive contact 24 are located, i.e., the C1 region, according to the third conductive contact 24 connected to the second output electrode F2.

It should be noted that the present invention can only detect the regional binding open circuit, and if the open circuit area is too small, the open circuit cannot be detected. That is, if the bound open area is located between the third conductive contact 22 and the third conductive contact 23, the bound open cannot be detected by the display panel binding detection method of the present invention.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A display panel comprises a display module and a Flexible Printed Circuit (FPC), wherein a plurality of conductive contact pieces are arranged in a binding region of the display module and a binding region of the FPC, and the display panel is characterized in that a first input electrode T1 and a second input electrode T2 for inputting electric signals are arranged on the display module, and a first output electrode F1 and a second output electrode F2 for outputting the electric signals are arranged on the FPC;

the first input electrode T1, the second input electrode T2, the conductive contact of the display module and the conductive contact of the FPC, the first output electrode F1 and the second output electrode F2 form a group of detection circuits for detecting whether the display module and the FPC are normally bonded;

the conductive contact of display module assembly includes: the first input electrode T1 is connected with the second conductive contact piece (11), the second input electrode T2 is connected with the second conductive contact piece (12), and the first conductive contact piece is positioned on one side, away from the second conductive contact piece (11), of the second conductive contact piece (12);

the conductive contact of the FPC comprises a plurality of I-shaped third conductive contacts, a third conductive contact (21) bound with a second conductive contact (11) connected with a first input electrode T1 is connected with the first output electrode F1, a third conductive contact (24) bound with one end (14) of the first conductive contact is connected with the second output electrode F2, the third conductive contact (22) is connected with a third conductive contact (23), the third conductive contact (22) is bound with a second conductive contact (12) connected with a second input electrode T2, and the third conductive contact (23) is bound with the other end (13) of the first conductive contact;

and if one of the first output electrode F1 and the second output electrode F2 has an output electric signal and the other has no output electric signal, determining that the display module and the FPC are bound and disconnected, and determining that the disconnected area is the area where the third conductive contact connected with the output electrode without the output electric signal and the plurality of adjacent third conductive contacts are located.

2. The display panel according to claim 1, wherein the edges of the display module and the FPC are provided with cross marks for alignment;

3. A display panel as claimed in claim 1 characterized in that a plurality of second conductive contacts are arranged between the first conductive contacts and the second conductive contacts (12).

4. A display panel as claimed in claim 3 characterized in that the number of second conductive contacts arranged between the first conductive contacts and the second conductive contacts (12) is greater than or equal to 10.

5. The display panel according to any one of claims 1 to 4, wherein the first input electrode T1, the second input electrode T2, the first output electrode F1 and the second output electrode F2 are plural in number, and plural sets of the detection circuits are formed, and the respective sets of the detection circuits are uniformly distributed on the display panel.

6. A display device comprising the display panel according to any one of claims 1 to 5.

7. A display panel binding detection method for detecting a display panel according to any one of claims 1 to 4, comprising the steps of:

judging whether the display module and the FPC are normally bound or not according to whether the first output electrode F1 and the second output electrode F2 output electric signals or not; and if one of the first output electrode F1 and the second output electrode F2 has an output electric signal and the other has no output electric signal, determining that the display module and the FPC are bound and disconnected, and determining that the disconnected area is the area where the third conductive contact connected with the output electrode without the output electric signal and the plurality of adjacent third conductive contacts are located.

8. The method for detecting binding of a display panel as claimed in claim 7, wherein the determining whether the binding of the display module and the FPC is normal according to whether the first output electrode F1 and the second output electrode F2 output electric signals further comprises: