Display panel and display device

Abstract

The application provides a display panel and a display device, wherein the display panel comprises: a test device connected with a display area of the display panel, comprising a plurality of first pins; a flexible circuit board connected with the test device, comprising a plurality of second pins; and an electrostatic protection module connected in series between the test device and the flexible circuit board, wherein the electrostatic protection module comprises a first end and a second end, and the first end and the second end of the electrostatic protection module are connected with the first pins and the second pins through connecting lines respectively. The application can avoid the electrostatic breakdown phenomenon between the flexible circuit board and the test device, and improve the yield of the test device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] In recent years, due to the rapid development of electronic and information industries, the related products are also increasingly sophisticated. The portability of display panels has gradually become the focus of the industry. Therefore, the COG (Chip On Glass, chip fixed on glass substrate) technology is also born, which is a technology of binding driving chips (Integrated Circuit) on an array substrate.

[0003] However, the FPC Pad (Flexible Printed Circuit Pad) of the COG product is easy to introduce static electricity, which causes the phenomenon of electrostatic shock (ESD) of the test device, and further damages the test device and reduces the yield of the product. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a display panel and a display device, which can avoid the electrostatic breakdown phenomenon between the flexible circuit board and the test device, protect the test device and improve the yield of the test device.

[0005] One aspect of an embodiment of the present application provides a display panel, comprising:

[0006] a test device connected to a display area of the display panel, comprising a plurality of first pins;

[0007] a flexible circuit board connected to the test device, comprising a plurality of second pins;

[0008] an electrostatic protection module connected in series between the test device and the flexible circuit board, the electrostatic protection module comprising a first end and a second end, the first end and the second end of the electrostatic protection module being connected to the first pins and the second pins respectively through connection lines.

[0009] In some embodiments, the electrostatic protection module comprises a plurality of adjustment units, the adjustment units comprising a first end and a second end, the first ends and the second ends of the plurality of adjustment units collectively constituting the first end and the second end of the electrostatic protection module.

[0010] The first ends and the second ends of the adjustment units are connected to the first pins and the second pins respectively through the connection lines.

[0011] In some embodiments, the display panel further comprises:

[0012] A test control module is connected to the test device, and the test control module includes a third pin.

[0013] In some embodiments, the electrostatic protection module is connected in series between the test control module and the test device through the connection line, and a second end of the electrostatic protection module is further connected to the test control module.

[0014] In some embodiments, the second end of the adjustment unit of the electrostatic protection module is further connected to the third pin.

[0015] In some embodiments, the display panel further includes:

[0016] Another electrostatic protection module is connected in series between the test control module and the test device through the connection line, and a second end of the another electrostatic protection module is further connected to the test control module.

[0017] In some embodiments, the second end of the adjustment unit of the another electrostatic protection module is further connected to the third pin.

[0018] In some embodiments, the adjustment unit includes at least one adjustment subunit, and the adjustment subunit is connected in series to the connection line.

[0019] In some embodiments, a first pole of the first MOS tube is connected to a first pull-down point, and the first pull-down point is connected to a first preset voltage.

[0020] A second pole of the first MOS tube and a gate of the first MOS tube are respectively connected to the connection line.

[0021] A first pole of the second MOS tube is connected to the connection line.

[0022] A second pole of the second MOS tube and a gate of the second MOS tube are respectively connected to a second pull-down point, and the second pull-down point is connected to a second preset voltage.

[0023] In some embodiments, the first preset voltage is greater than the second preset voltage.

[0024] In some embodiments, the adjustment unit includes at least one adjustment subunit, and the adjustment subunit includes a diode, one end of the diode is connected to the first pin, and the other end of the diode is connected to the second pin.

[0025] In some embodiments, the adjustment unit includes at least one adjustment subunit, and the adjustment subunit includes at least one polysilicon resistor.

[0026] In some embodiments, the adjusting subunit includes two polysilicon resistors, and the two polysilicon resistors are connected in parallel, a first end of the polysilicon resistor is connected to the first pin, and a second end of the polysilicon resistor is connected to the second pin.

[0027] In some embodiments, the display panel includes a non-display area, and the test device and the electrostatic protection module are located in the non-display area.

[0028] In some embodiments, the electrostatic protection module is located at an end of the test device along a first direction.

[0029] The second direction is a direction in which the test device points to the display area, and the first direction is parallel to a plane in which the display panel is located and perpendicular to the second direction.

[0030] In some embodiments, the adjusting unit includes ten adjusting subunits, and the ten adjusting subunits are connected in parallel.

[0031] In some embodiments, the connection line connected to the test device includes a visual test switch line, an odd column data line, and an even column data line, which are respectively electrically connected to the first pin.

[0032] Another aspect of the embodiment of the present application further provides a display device including the display panel as described above.

[0033] The display panel and the display device provided by the present application have at least the following beneficial effects:

[0034] By arranging the electrostatic protection module on the connection line between the flexible circuit board and the test device, the electrostatic breakdown phenomenon between the flexible circuit board and the test device can be avoided, the test device is protected, the yield of the test device is improved, and the production cost is reduced.

[0035] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application. It is clear that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0037] Figure 1 A schematic diagram of a display panel of an embodiment of the present application is shown;

[0038] Figure 2Connection of the flexible circuit board of the present application to a test device;

[0039] Figure 3 Another schematic view of the connection of the flexible circuit board of the present application to a test device;

[0040] Figure 4 Schematic view of Figure 3 Schematic view of a first embodiment of the present application;

[0041] Figure 5 Schematic view of Figure 4 Schematic view of a second embodiment of the present application;

[0042] Figure 6 Schematic view of Figure 3 Schematic view of a third embodiment of the present application;

[0043] Figure 7 Schematic view of Figure 3 Schematic view of a fourth embodiment of the present application;

[0044] Figure 8 Schematic view of Figure 3 Schematic view of a fifth embodiment of the present application;

[0045] Figure 9 Another schematic view of the connection of the flexible circuit board of the present application to a test device;

[0046] Figure 10 Schematic view of Figure 9 Schematic view of a sixth embodiment of the present application;

[0047] Figure 11 Schematic view of Figure 9 Schematic view of a seventh embodiment of the present application;

[0048] Figure 12 Schematic view of Figure 9 Schematic view of an eighth embodiment of the present application;

[0049] Figure 13 Schematic view of Figure 9 Schematic view of an eighth embodiment of the present application.

[0050] Reference numerals:

[0051] 30' electrostatic protection module of the prior art

[0052] 10 test device

[0053] 11 first pin

[0054] 20 flexible circuit board

[0055] 21 second pin

[0056] 30 static protection module

[0057] 31 adjustment unit

[0058] 311 adjustment subunit

[0059] 312 first pull-down point

[0060] 313 second pull-down point

[0061] 40 test control module

[0062] 41 third pin

[0063] 51 driving chip input end

[0064] 52 driving chip output end

[0065] 60 visual test switch line

[0066] 70 odd-numbered column data line

[0067] 80 even-numbered column data line

[0068] 90 display panel

[0069] 91 display area

[0070] 92 non-display area

[0071] VGH first preset voltage

[0072] VHL second preset voltage

[0073] X first direction

[0074] Y second direction DETAILED DESCRIPTION

[0075] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein. Rather, these implementations are provided as example embodiments so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus description of the same will not be repeated.

[0076] The use of terms such as "first," "second," and similar terms in the specific description does not indicate any order, quantity, or importance, but is merely used to distinguish different components. Furthermore, in the description of this invention, terms such as "upper," "lower," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention.

[0077] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features in different embodiments can be combined with each other.

[0078] Through meticulous and in-depth research, the inventors in this case have provided a solution to the problems existing in the prior art. Figure 1 This diagram illustrates the connection between the flexible circuit board and the testing device of the present invention.

[0079] Figure 2 A schematic diagram of a display panel according to an embodiment of the present invention is shown. Figure 1 and Figure 2 As shown, the present invention provides a display panel 90 and a display device. Specifically, the display panel 90 includes a test device 10, a flexible circuit board 20, and an electrostatic discharge (ESD) protection module 30. The test device 10 is connected to the display area 91 of the display panel 90 and includes a plurality of first pins 11. The flexible circuit board 20 is connected to the test device 10 and includes a plurality of second pins 21. The ESD protection module 30 is connected in series between the test device 10 and the flexible circuit board 20. The ESD protection module 30 includes a first end and a second end, which are respectively connected to the first pins 11 and the second pins 21 via connecting lines. By setting the ESD protection module 30 on the connecting line between the flexible circuit board 20 and the test device 10, the present invention can avoid electrostatic breakdown between the flexible circuit board 20 and the test device 10, protect the test device 10, improve the yield of the test device 10, and reduce production costs.

[0080] The invention will be further described below with reference to the accompanying drawings. Figure 1 and 2As shown, one aspect of the present invention provides a display panel 90, which includes a display area 91 and a non-display area 92. The aforementioned test device 10, flexible circuit board 20, and electrostatic discharge protection module 30 are all located in the non-display area 92 of the display panel 90. In the manufacturing process of the display panel 90, before bonding the driver chip (not shown), it is necessary to test whether the display panel 90 can display normally to avoid bonding the driver chip to a display panel 90 that does not meet quality standards, resulting in damage or waste of the high-cost driver chip. Before bonding the driver chip, the test device 10 tests the display area 91 of the display panel 90 to detect whether the display area 91 can display normally. After bonding the driver chip, the flexible circuit board 20 shuts down the test device 10 via a control signal. The driver chip includes at least a driver chip input terminal 51 and a driver chip output terminal 52. After confirming that the display panel 90 can display normally, the driver chip is bonded to the display panel 90, and the flexible circuit board 20 inputs a signal to shut down the test device 10. The electrostatic discharge protection module 30 is used to prevent electrostatic breakdown between the flexible circuit board 20 and the test device 10, and to protect the test device 10.

[0081] In a preferred embodiment, such as Figure 2 As shown, when the display area 91 and the non-display area 92 are on the same plane, the test device 10 is located below the display area 91. The flexible circuit board 20 is located on the side of the test device 10 away from the display area 91. Along the first direction X, the electrostatic discharge protection module 30 is located at the end of the test device 10. In a preferred embodiment, two electrostatic discharge protection modules 30 are located at the left and right ends of the test device 10 along the first direction X. The second direction Y is the direction in which the test device 10 points towards the display area 91. Wherein, the first direction X is parallel to the plane where the display panel 90 is located and perpendicular to the second direction Y. Preferably, the first direction X is the direction of the short side of the display panel 90, and the second direction Y is the direction of the long side of the display panel 90. In some embodiments, when the display area 91 and the non-display area 92 are bent and are not on the same plane, the above-mentioned components also satisfy the above-mentioned positional relationship when they were on the same plane before bending.

[0082] In some embodiments, such as Figure 1 and 2As shown, the electrostatic discharge (ESD) protection module 30 includes multiple adjustment units 31. Each adjustment unit 31 has a first end and a second end, and the first and second ends of the multiple adjustment units 31 together constitute the first and second ends of the ESD protection module 30. The first and second ends of the adjustment units 31 are connected to the first pin 11 and the second pin 21 via connecting wires. Each adjustment unit 31 is used to protect the connecting wire to which it is connected, preventing electrostatic breakdown. Overall, the ESD protection module 30 is connected in series between the test device 10 and the flexible circuit board 20 via multiple connecting wires to prevent electrostatic breakdown between the two and protect the test device 10.

[0083] In some embodiments, such as Figure 2 , 3 As shown in Figure 9, Figure 3 Another schematic diagram showing the connection between the flexible circuit board and the test device of the present invention is shown; Figure 9 This diagram illustrates another schematic of the connection between the flexible circuit board and the test device according to the present invention. The display panel 90 may further include a test control module 40. The test control module 40 is located in the non-display area 92 of the display panel 90. Two test control modules 40 are located on opposite sides of the flexible circuit board 20 along a first direction X. The test control module 40 is connected to the test device 10 via multiple connecting lines. The test control module 40 includes multiple third pins 41, and the multiple connecting lines are connected to the multiple third pins 41. Specifically, before bonding the driver chip, the test control module 40 inputs a test signal to the test device 10. This test signal is input to the display area 91 of the display panel 90 via the output terminal 52 of the driver chip, thereby detecting whether the display area 91 can display normally. After bonding the driver chip, the flexible circuit board 20 turns off the test device 10 via a control signal. At this time, the flexible circuit board 20 inputs a test signal to the input terminal 51 of the driver chip. This test signal is input to the display area 91 via the output terminal 52 of the driver chip for display detection. In some embodiments, such as Figure 1 , 3 As shown in Figure 9, the connection lines connected to the test device 10 include a vision test switch line 60, an odd-numbered data line 70, and an even-numbered data line 80, all of which are electrically connected to the first pin 11 of the test device 10. Multiple adjustment units 31 of the electrostatic discharge (ESD) protection module 30 correspond to at least a portion of the connection lines of the multiple vision test switch lines 60, odd-numbered data lines 70, and even-numbered data lines 80, with each of these connection lines connected to one adjustment unit 31. All of the aforementioned adjustment units 31 together constitute the ESD protection module 30.

[0084] In some embodiments, such as Figure 2As shown, the display panel 90 may further include a driver chip. The main function of the driver chip is to send drive signals and data to the display panel 90 in the form of electrical signals, controlling whether the pixel electrodes in the display panel 90 are conductive, thereby enabling the display panel 90 to display images. The driver chip includes at least a driver chip input terminal 51 and a driver chip output terminal 52. In a preferred embodiment, when the display area 91 and the non-display area 92 are located on the same plane, the driver chip input terminal 51 is located between the flexible circuit board 20 and the test device 10, and the driver chip output terminal 52 is located between the test device 10 and the display area 91. In some embodiments, when the display area 91 and the non-display area 92 are bent and are not located on the same plane, the above-mentioned components also satisfy the above-mentioned positional relationship when they were on the same plane before bending.

[0085] In some embodiments, such as Figure 1 , 2 As shown in Figures 3 and 9, the connections between the components of the display panel 90 include at least the following: the test device 10 and the display area 91 are connected via connecting lines; the flexible circuit board 20 and the test device 10 are connected via connecting lines; the electrostatic protection module 30 is connected between the test device 10 and the flexible circuit board 20 via connecting lines; the test control module 40 and the test device 10 are connected via connecting lines; the driver chip input terminal 51 and the test device 10 are connected via connecting lines; the driver chip input terminal 51 and the flexible circuit board 20 are connected via connecting lines; the driver chip output terminal 52 and the driver chip input terminal 51 are connected via connecting lines; and the driver chip output terminal 52 and the display area 91 are connected via connecting lines. Some connecting lines are not shown in the figures. In the manufacturing process of the display panel 90, before bonding the driver chip, it is necessary to test whether the display panel 90 can display normally to avoid bonding the driver chip to a display panel 90 that does not meet quality standards, resulting in damage or waste of the high-cost driver chip. Specifically, before bonding the driver chip to the display panel 90, a test is performed by controlling the test signal through the test device 10. At this point, the test signal originates from the test control module 40, passes sequentially through the test device 10 and the driver chip output terminal 52, and enters the display area 91 of the display panel 90 for testing. After the display panel 90 is bound to the driver chip, the flexible circuit board 20 inputs control signals through the visual test switch line 60, odd-numbered column data lines 70, and even-numbered column data lines 80 to shut down the test device 10. At this point, the test signal originates from the flexible circuit board 20, passes sequentially through the driver chip input terminal 51 and the driver chip output terminal 52, and enters the display area 91 of the display panel 90 for testing.

[0086] The following combination Figures 1 to 8 The first type of embodiment provided by the present invention will be described. Figure 4 Show Figure 3 The schematic diagram of the first embodiment of the present invention is shown in detail;Figure 5 shows Figure 4 schematic diagram of the adjustment unit; Figure 6 shows Figure 3 schematic diagram of the second embodiment of the present application; Figure 7 shows Figure 3 schematic diagram of the third embodiment of the present application; Figure 8 shows Figure 3 schematic diagram of the fourth embodiment of the present application.

[0087] The first embodiment of the display panel 90 provided by the present application has the common features as follows in addition to the technical features described above for the display panel 90: the electrostatic protection module 30 is also connected in series between the test control module 40 and the test device 10 through the connecting line, and the second end of the electrostatic protection module 30 is also connected with the test control module 40. Wherein, the second end of the adjustment unit 31 of the electrostatic protection module 30 is also connected with the third pin 41 of the test control module 40. That is, the flexible circuit board 20 and the test control module 40 are respectively connected with the test device 10, but the connecting lines of the two are converged before being connected with the test device 10, and the electrostatic protection module 30 is arranged between the convergence point and the test device 10. At this time, one electrostatic protection module 30 protects the connecting line between the flexible circuit board 20 and the test device 10, and the connecting line between the test control module 40 and the test device 10. Compared with the prior art, the first embodiment of the present application changes the wiring between the flexible circuit board 20 and the test device 10, so that the wiring between the two passes through the electrostatic protection module 30, thereby realizing the electrostatic protection between the flexible circuit board 20 and the test device 10. When the absolute value of the actual voltage on the connecting line between the test device 10 and the flexible circuit board 20 is greater than the preset voltage, the electrostatic protection module 30 is used to adjust the current value on the connecting line to prevent the connecting line from being damaged. In the first embodiment of the present application, the electrostatic protection module 30 is also used to adjust the voltage value on the connecting line between the test device 10 and the visual test control module 40. Compared with the prior art, the first embodiment of the present application arranges the wiring between the test device 10, the flexible circuit board 20 and the test control module 40, so that the connecting lines between the flexible circuit board 20 and the test device 10 and between the test control module 40 and the test device 10 all pass through the electrostatic protection module 30, so that the two share the electrostatic protection module 30, and the electrostatic protection of the test device 10, the flexible circuit board 20 and the test control module 40 is realized at the same time with as few devices as possible, thereby reducing the manufacturing cost.

[0088] In the first embodiment of the present application, as Figures 3 to 5As shown, the specific implementation of the electrostatic protection module 30 is a MOS tube. As a kind of semiconductor device, MOS tube has specific conductive property and electronic conduction ability. In electrostatic protection, MOS tube is usually connected to the input / output port or other sensitive parts of circuit, as a switch to limit the transmission of electrostatic discharge or electrostatic energy. When external electrostatic energy or electrostatic voltage caused by discharge is applied on MOS tube, the conductive channel of MOS tube will be opened, and the electrostatic energy is guided to MOS tube, so as to protect other elements in circuit from static damage. MOS tube has the advantages of high-speed response, low voltage operation and strong controllability in electrostatic protection of circuit.

[0089] In the embodiment, as shown in Figure 4 and 5 As shown, the electrostatic protection module 30 includes a plurality of adjustment units 31, and each adjustment unit 31 includes at least one adjustment subunit 311, and the adjustment subunit 311 is connected in series to the connection line, and the adjustment subunit 311 includes a first MOS tube and a second MOS tube. MOS tube can control the voltage within a preset range, and when the voltage is too large or too small, it can be adjusted. Specifically, the first MOS tube is used to reduce the current value on the connection line when the actual voltage on the connection line is greater than the first preset voltage. The second MOS tube is used to increase the current value on the connection line when the actual voltage on the connection line is less than the second preset voltage. Each adjustment unit 31 is used to protect the connection line where it is located to prevent electrostatic breakdown phenomenon from occurring on the connection line. All first MOS tubes and second MOS tubes of a plurality of adjustment subunits 311 collectively adjust the current value on the connection line to keep it within a preset range to prevent electrostatic breakdown.

[0090] In the embodiment, as shown in Figure 5 The first pole of the first MOS tube is connected to the first pull-down point 312. The first pull-down point 312 is connected to the first preset voltage VGH. The second pole and the gate of the first MOS tube are respectively connected to the connection line. The first pole of the second MOS tube is connected to the connection line. The second pole and the gate of the second MOS tube are respectively connected to the second pull-down point 313. The second pull-down point 313 is connected to the second preset voltage VHL. In a preferred embodiment, the first preset voltage VGH is greater than the second preset voltage VHL. In the specific working process, when the voltage value on the connection line is greater than VGH, the first MOS tube is turned on, at this time, part of the current on the connection line flows to the first pull-down point 312, and the rest of the current flows to the subsequent connection line, thereby reducing the voltage value on the connection line. When the voltage value on the connection line is less than VHL, the second MOS tube is turned on, at this time, part of the current on the connection line flows to the second pull-down point 313, and the rest of the current flows to the subsequent connection line, thereby reducing the current value on the connection line, and further reducing the voltage value on the connection line.

[0091] In a preferred embodiment, the adjusting unit 31 comprises ten adjusting sub-units 311, and the ten adjusting sub-units 311 are connected in parallel. The adjusting sub-unit 311 comprises a first MOS tube and a second MOS tube. That is, each adjusting unit 31 is composed of ten pairs of MOS tubes.

[0092] In the second embodiment of the present application, as shown in Figure 3 and 6 , the specific implementation of the electrostatic protection module 30 is a diode. The diode is usually connected to the input / output port or signal line of the display panel circuit as a path of electrostatic discharge. The diode should be connected with proper polarity and be biased in the forward direction to achieve the property of one-way conduction. When the electrostatic discharge acts on the diode, the diode will guide the discharge current to the ground or other places, thereby preventing the electrostatic discharge from causing damage to other devices or circuits.

[0093] In the present embodiment, as shown in Figure 6 , the electrostatic protection module 30 comprises a plurality of adjusting units 31, and the adjusting unit 31 comprises at least one adjusting sub-unit 311. In a preferred embodiment, the adjusting unit 31 comprises one adjusting sub-unit 311, that is, the adjusting sub-unit 311 is the adjusting unit 31. In the present embodiment, the adjusting sub-unit 311 is a diode, one end of the diode is connected to the first pin 11, and the other end of the diode is connected to the second pin 21 and the third pin 41. When the current on the connection line is greater than the preset current, the diode is used to reduce the current value on the connection line, preventing the connection line where the diode is located from being struck by static electricity, thereby protecting the test device 10.

[0094] In the third embodiment of the present application, as shown in Figure 3 and 7 , the specific implementation of the electrostatic protection module 30 is a polysilicon resistor. The polysilicon resistor is usually connected to the input / output port or signal line of the display panel circuit as a path of electrostatic discharge. When the electrostatic discharge acts on the polysilicon resistor, the polysilicon resistor will disperse and release the energy of the electrostatic discharge by guiding the discharge current to the ground or other places, thereby preventing the electrostatic discharge from causing damage to sensitive electronic devices.

[0095] In the present embodiment, as shown in Figure 7As shown in the figure, the electrostatic protection module 30 comprises a plurality of adjustment units 31, and each adjustment unit 31 comprises at least one adjustment sub-unit 311. In a preferred embodiment, the adjustment unit 31 comprises one adjustment sub-unit 311, i.e. the adjustment sub-unit 311 is the adjustment unit 31. In this embodiment, the adjustment sub-unit 311 is a polysilicon resistor. One end of the polysilicon resistor is connected to the first pin 11, and the other end of the polysilicon resistor is connected to the second pin 21 and the third pin 41. When the current on the connecting line is greater than the preset current, the polysilicon resistor is used to reduce the current value on the connecting line, so as to prevent the connecting line where the polysilicon resistor is located from being electrostatically broken down, thereby protecting the test device 10.

[0096] In the fourth embodiment of the present application, as shown in the figure, Figure 3 and 8 the specific implementation mode of the electrostatic protection module 30 is a polysilicon resistor. In this embodiment, the adjustment unit 31 comprises a plurality of adjustment sub-units 311, and the plurality of adjustment sub-units 311 are connected in parallel. The adjustment sub-unit 311 is a polysilicon resistor. In this embodiment, the connection mode and the role of each polysilicon resistor are the same as those in the third embodiment of the present application, and will not be described here. In a preferred embodiment, the adjustment unit 31 comprises two adjustment sub-units 311, and the two adjustment sub-units 311 are connected in parallel.

[0097] The second type of embodiments provided by the present application will be described below in combination with Figure 1 , Figures 9 to 13 . Figure 10 The fifth embodiment of the present application is shown in the figure; Figure 9 The sixth embodiment of the present application is shown in the figure; Figure 11 The seventh embodiment of the present application is shown in the figure; Figure 9 The eighth embodiment of the present application is shown in the figure. Figure 12 Figure 9 Figure 13 Figure 9

[0098] ​​​​The second type of embodiment of the display panel 90 has the following common features in addition to the technical features described above for the display panel 90 and excluding the features of the first type of embodiment: the display panel 90 further comprises another electrostatic protection module 30. The other electrostatic protection module 30 is connected in series between the test control module 40 and the test device 10 through a connection line, the first end of the other electrostatic protection module 30 is connected to the test device 10, and the second end is connected to the test control module 40. The first end of the adjustment unit 31 of the other electrostatic protection module 30 is connected to the first pin 11 of the test device 10, and the second end is connected to the third pin 41 of the test control module 40. That is, in the second type of embodiment, the display panel 90 comprises two electrostatic protection modules 30. The flexible circuit board 20 and the test control module 40 are respectively connected to the test device 10, but the connection lines of the two are converged before being connected to the test device 10. The first electrostatic protection module 30 is arranged between the convergence point and the flexible circuit board 20, and the second electrostatic protection module 30 is arranged between the convergence point and the test control module 40. At this time, the two electrostatic protection modules 30 respectively protect the connection line between the flexible circuit board 20 and the test device 10, and the connection line between the test control module 40 and the test device 10. The specific implementation mode of the electrostatic protection module 30 between the test device 10 and the test control module 40 can be any one of the first to fourth embodiments of the present application, or any other structure that can realize the electrostatic protection function. Compared with the prior art, the present embodiment increases one electrostatic protection module 30 and arranges it between the flexible circuit board 20 and the test device 10, so that the wiring between the two passes through the electrostatic protection module 30, thereby realizing the electrostatic protection between the flexible circuit board 20 and the test device 10, and protecting the test device 10. In addition, the present embodiment further arranges another electrostatic protection module 30 between the test control module 40 and the test device 10, based on the same principle, to further protect the test device 10. In the present embodiment, the single electrostatic protection module 30 has the same effect as in the first type of embodiment, which will not be described here. However, the common arrangement of the two electrostatic protection modules 30 in the present embodiment is better than the electrostatic protection effect of the test device 10 in the first type of embodiment.

[0099] In the fifth embodiment of the present application, as shown in Figure 5 , 9 and 10, the specific implementation mode of the electrostatic protection module 30 is a MOS tube. In the present embodiment, the specific structure, connection relationship and effect of the electrostatic protection module 30 are the same as those of the first embodiment of the present application, which will not be described here.

[0100] In the sixth embodiment of the present application, as shown in Figure 9 and 11As shown in FIG. 6, the specific implementation of the electrostatic protection module 30 is a diode. In this embodiment, the specific structure, connection relationship and function of the electrostatic protection module 30 are the same as those of the second embodiment of the present application, and thus will not be repeated here.

[0101] In the seventh embodiment of the present application, as shown in FIG. 7, the specific implementation of the electrostatic protection module 30 is a polysilicon resistor. In this embodiment, the specific structure, connection relationship and function of the electrostatic protection module 30 are the same as those of the third embodiment of the present application, and thus will not be repeated here. Figure 9 12 In the seventh embodiment of the present application, as shown in FIG. 7, the specific implementation of the electrostatic protection module 30 is a polysilicon resistor. In this embodiment, the specific structure, connection relationship and function of the electrostatic protection module 30 are the same as those of the third embodiment of the present application, and thus will not be repeated here.

[0102] In the eighth embodiment of the present application, as shown in FIG. 8, the specific implementation of the electrostatic protection module 30 is a polysilicon resistor. In this embodiment, the specific structure, connection relationship and function of the electrostatic protection module 30 are the same as those of the fourth embodiment of the present application, and thus will not be repeated here. Figure 9 13 Based on the same inventive concept, another aspect of the embodiments of the present application further provides a display device comprising the above-mentioned display panel 90 provided by the embodiments of the present application. The display device can be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, etc. The implementation of the display device can refer to the embodiments of the display panel 90 described above, and the repeated parts will not be repeated here.

[0103] In summary, the display panel and the display device provided by the present application can avoid the electrostatic breakdown phenomenon between the flexible circuit board 20 and the test device 10, protect the test device 10, improve the yield of the test device 10, and reduce the production cost by arranging the electrostatic protection module 30 on the connecting line between the flexible circuit board 20 and the test device 10.

[0104] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application should not be limited to these descriptions. For ordinary skilled persons in the technical field of the present application, some simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be regarded as falling within the protection scope of the present application.

[0105] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application should not be limited to these descriptions. For ordinary skilled persons in the technical field of the present application, some simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be regarded as falling within the protection scope of the present application.​​

Claims

1. A display panel, characterized by, The display panel comprises: a testing device connected with a display area of the display panel, comprising a plurality of first pins; a flexible circuit board connected with the testing device, comprising a plurality of second pins; an electrostatic protection module connected in series between the testing device and the flexible circuit board, the electrostatic protection module comprising a first end and a second end, the first end and the second end of the electrostatic protection module being connected with the first pins and the second pins through connection lines respectively; a testing control module connected with the testing device; the electrostatic protection module is connected in series between the testing control module and the testing device through the connection lines, and the second end of the electrostatic protection module is further connected with the testing control module; the display panel comprises a non-display area, and the testing device and the electrostatic protection module are located in the non-display area; the display panel further comprises a driving chip, the driving chip comprising a driving chip input end and a driving chip output end; the driving chip input end is located between the flexible circuit board and the testing device, and the driving chip output end is located between the testing device and the display area; in a first direction, the electrostatic protection module is located at an end of the testing device; a second direction is a direction in which the testing device points to the display area, and the first direction is parallel to a plane in which the display panel is located and perpendicular to the second direction.

2. The display panel of claim 1, wherein: the electrostatic protection module comprises a plurality of adjustment units, the adjustment units comprising a first end and a second end, and the first ends and the second ends of the plurality of adjustment units collectively constitute the first end and the second end of the electrostatic protection module respectively; wherein the first ends and the second ends of the adjustment units are connected with the first pins and the second pins through the connection lines respectively.

3. The display panel of claim 2, wherein, Further comprising: the testing control module comprises a plurality of third pins.

4. The display panel of claim 3, wherein: the second ends of the adjustment units of the electrostatic protection module are further connected with the third pins.

5. The display panel of claim 2, wherein: the adjustment unit comprises at least one adjustment subunit, the adjustment subunit being connected in series with the connection line, and the adjustment subunit comprising a first MOS tube and a second MOS tube.

6. The display panel of claim 5, wherein: a first pole of the first MOS tube is connected with a first pull-down point, wherein the first pull-down point is connected with a first preset voltage; a second pole of the first MOS tube and a gate of the first MOS tube are connected with the connection line respectively; a first pole of the second MOS tube is connected with the connection line; a second pole of the second MOS tube and a gate of the second MOS tube are connected with a second pull-down point respectively, and the second pull-down point is connected with a second preset voltage.

7. The display panel of claim 6, wherein: the first preset voltage is greater than the second preset voltage.

8. The display panel of claim 2, wherein: The adjusting unit comprises at least one adjusting subunit, and the adjusting subunit comprises a diode, one end of the diode is connected to the first pin, and the other end of the diode is connected to the second pin.

9. The display panel of claim 2, wherein, The adjusting unit comprises at least one adjusting subunit, and the adjusting subunit comprises at least one polysilicon resistor.

10. The display panel of claim 9, wherein, The adjusting subunit comprises two polysilicon resistors, and the two polysilicon resistors are connected in parallel, a first end of the polysilicon resistor is connected to the first pin, and a second end of the polysilicon resistor is connected to the second pin.

11. The display panel of claim 5, wherein, The adjusting unit comprises ten adjusting subunits, and the ten adjusting subunits are connected in parallel.

12. The display panel of claim 1, wherein, The connection line connected to the test device comprises a visual test switch line, an odd column data line, and an even column data line, and the three are electrically connected to the first pin respectively.

13. A display device comprising: A display panel comprising any one of claims 1 to 12.

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