Display module and display device

Abstract

Embodiments of the present application disclose a display module and a display device, wherein the display module comprises a display screen and a driving chip; the display screen comprises a display area and a non-display area; the driving chip is arranged in the non-display area of the display screen and is used for generating at least a driving signal for driving the display screen; the driving chip comprises at least one first pin and at least one second pin; the driving signal generated by the driving chip is related to the signal transmitted by the first pin; the driving signal generated by the driving chip is irrelevant to the signal transmitted by the second pin; and the at least one first pin and the at least one second pin are electrically connected. By connecting the first pin and the second pin, the electrostatic protection circuit connected to the first pin and the electrostatic protection circuit connected to the second pin jointly bear the invading electrostatic load, the risk of the first pin and the related circuit connected to the first pin being damaged is reduced, the electrostatic protection capability of the display module is improved, and the reliability of the signal transmitted by the first pin is ensured.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a display module and a display device. BACKGROUND

[0002] With the development of display technology, the requirement for the electrostatic protection capability of display devices is also higher and higher.

[0003] In the electrostatic test of the display device or the use process of the display device, static electricity can be introduced to the pins of the driving chip. When the static electricity exceeds the load of the electrostatic protection circuit of the pins of the driving chip, the pins of the driving chip and the related lines connected thereto can be damaged. The damage of the key pins of the driving chip and the related lines connected thereto will seriously affect the display or touch performance of the display module. SUMMARY

[0004] The present application provides a display module and a display device to improve the electrostatic protection capability of the display module and the display device, reduce the risk of damage of the key pins of the driving chip and the related lines connected thereto, and ensure good display and touch performance.

[0005] In a first aspect, embodiments of the present application provide a display module, comprising:

[0006] a display screen and a driving chip; wherein the display screen comprises a display area and a non-display area; the driving chip is arranged in the non-display area of the display screen and is used to generate at least a driving signal for driving the display screen; the driving chip comprises at least one first pin and at least one second pin; the driving signal generated by the driving chip is related to the signal transmitted by the first pin; the driving signal generated by the driving chip is irrelevant to the signal transmitted by the second pin; and the at least one first pin and the at least one second pin are electrically connected.

[0007] Optionally, the second pin is a non-enabled pin reserved on the driving chip.

[0008] Optionally, the display module further comprises a flexible circuit board, and the flexible circuit board comprises at least one third pin and at least one fourth pin; wherein the at least one third pin is electrically connected to the at least one first pin, and the at least one fourth pin is electrically connected to the at least one second pin.

[0009] The flexible circuit board further comprises a connecting line, and the third pin and the fourth pin are electrically connected through the connecting line, so as to electrically connect the first pin electrically connected to the third pin and the second pin electrically connected to the fourth pin.

[0010] The non-display area comprises a bonding area, and the bonding area is provided with a first bonding terminal electrically connected to the first pin and a second bonding terminal electrically connected to the second pin.

[0011] The third pin is electrically connected with the first bonding terminal, and the fourth pin is electrically connected with the second bonding terminal.

[0012] Optionally, the display module further comprises a connector, the connector comprising a plurality of connection ports; the connection line comprising a first connection segment and a second connection segment, a first end of the first connection segment and a first end of the second connection segment being electrically connected to the same connection port, a second end of the first connection segment being electrically connected to the third pin, and a second end of the second connection segment being electrically connected to the fourth pin.

[0013] The line width of the second connection segment is greater than the line width of the first connection segment; and / or the line length of the second connection segment is less than the line length of the first connection segment.

[0014] Optionally, the driving chip comprises a plurality of electrostatic protection circuits, at least one first pin being connected to one electrostatic protection circuit, and at least one second pin being connected to one electrostatic protection circuit.

[0015] Optionally, the non-display area comprises a bonding area, the bonding area being provided with a first bonding terminal electrically connected to each first pin in one-to-one correspondence and a second bonding terminal electrically connected to each second pin in one-to-one correspondence.

[0016] The third pin is electrically connected with the first bonding terminal, and the fourth pin is electrically connected with the second bonding terminal.

[0017] Optionally, the non-display area comprises a bonding area, the bonding area being provided with a third bonding terminal, the third bonding terminal being a test pin of a display screen test circuit on the display screen, the test pin being used for inputting a test data signal when the display screen is tested; at least one first pin is electrically connected to at least one third bonding terminal; preferably, the first pin is electrically connected to the third bonding terminal in one-to-one correspondence.

[0018] Optionally, each first pin is arranged in a first region of the driving chip, each second pin is arranged in a second region of the driving chip, the connection direction of the first region and the second region is a first direction, the first direction is perpendicular to a second direction, and the second direction is the connection direction of the driving chip and the display screen.

[0019] Optionally, when a plurality of first pins are electrically connected to a plurality of second pins, different first pins are electrically connected to different second pins.

[0020] Optionally, at least one first pin is electrically connected to a plurality of second pins.

[0021] In a second aspect, an embodiment of the present application further provides a display device comprising the display module of the first aspect.

[0022] The display module and the display device provided by the embodiment of the present application comprise a display screen and a driving chip, the driving chip comprises at least one first pin and at least one second pin, the driving signal generated by the driving chip is related to the signal transmitted by the first pin, and the display screen driving signal generated by the driving chip is irrelevant to the signal transmitted by the second pin. By electrically connecting the at least one first pin and the at least one second pin, the electrostatic protection circuit connected to the first pin and the electrostatic protection circuit connected to the second pin jointly bear the invading electrostatic load, the risk of the first pin and the related circuit connected to the first pin being damaged is reduced, the electrostatic protection capability of the display module is improved, the reliability of the signal transmitted by the first pin is ensured, and then the reliability of the display screen driving signal generated by the driving chip is improved, and the display performance and the touch performance of the display module are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic diagram of a display module provided by the embodiment of the present application;

[0024] Figure 2 is a structural schematic diagram of another display module provided by the embodiment of the present application;

[0025] Figure 3 is a structural schematic diagram of another display module provided by the embodiment of the present application;

[0026] Figure 4 is Figure 3 is a specific structural schematic diagram of a connector connected to the third pin and the fourth pin through a connecting line;

[0027] Figure 5 is a structural schematic diagram of another display module provided by the embodiment of the present application;

[0028] Figure 6 is a structural schematic diagram of another display module provided by the embodiment of the present application;

[0029] Figure 7 is a structural schematic diagram of another display module provided by the embodiment of the present application;

[0030] Figure 8 is a structural schematic diagram of a display device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0031] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0032] As described in the background, the existing display device has poor electrostatic protection capability, and the key pins of the driving chip and the related lines connected thereto are easily damaged, affecting the display or touch performance of the display module. The inventor has found that the reason for the above problems is that, in the existing display device, the driving chip is connected to the flexible circuit board through the key pins, and the flexible circuit board is connected to the mainboard. The flexible circuit board can transmit the signals received from the mainboard to the key pins of the driving chip, so that the driving chip generates a driving signal according to the signals received by the key pins and sends it to the display screen, so that the display screen works (including display and touch) under the driving of the driving signal. In the related art, when the display module is tested for static electricity, static electricity is usually applied to the connector connected to the flexible circuit board, and the static electricity reaches the key pins of the driving chip through the flexible circuit board. When the static electricity exceeds the load of the electrostatic protection circuit that the key pins of the driving chip can withstand, the key pins and the related lines connected thereto can be damaged, so that the key pins cannot normally receive the signals transmitted by the flexible circuit board, and therefore the driving signal generated by the driving chip is affected, ultimately resulting in the display or touch performance of the display module being affected. During the transportation and use of the display device, static electricity is inevitably introduced, and based on the same reason, the display and touch performance of the display device will also be affected.

[0033] Based on the above reasons, the embodiment of the present application provides a display module, Figure 1 is a structural schematic diagram of a display module provided by the embodiment of the present application, referring to Figure 1 The display module includes a display screen 100 and a driving chip 200, wherein the display screen includes a display area AA and a non-display area NAA; the driving chip 200 is arranged in the non-display area NAA of the display screen 100 and is used at least for generating a driving signal for driving the display screen; the driving chip 200 includes at least one first pin A1 and at least one second pin A2, and the driving chip 200 is related to the signal transmitted by the first pin A1 according to the driving signal generated; the driving signal generated by the driving chip 200 is irrelevant to the signal transmitted by the second pin A2; and the at least one first pin A1 and the second pin A2 are electrically connected.

[0034] Specifically, the display screen 100 can be an organic light-emitting diode display screen, a liquid crystal display screen, or a micro light-emitting diode display screen, and can also be other types of display screens, which are not limited in the embodiment. The display screen 100 can include a driving circuit layer and a display function layer, wherein the driving circuit layer includes a display driving circuit for driving the display function layer to display. For example, when the display screen 100 is an organic light-emitting diode display screen, the display function layer includes an organic light-emitting diode. In some embodiments of the application, the display screen 100 can also include a touch function layer to realize the touch function of the display device. When the display screen 100 includes the touch function layer, the driving circuit layer includes touch-related devices and lines.

[0035] The driving signal generated by the driving chip 200 is related to the signal transmitted by the first pin A1. The so-called correlation means that the driving signal generated by the driving chip 200 changes following the change of the signal transmitted by the first pin A1. For example, the driving chip 200 can be connected to the mainboard of the display device and the display screen 100, and the driving chip 200 can receive the mainboard output signal and generate the driving signal of the display screen 100 according to the mainboard output signal. The mainboard output signal can include power supply signals required by digital circuits, MIPI data signals, etc. The driving signal includes display driving signals and touch driving signals, wherein the display driving signal includes clock signals, high-level signals, low-level signals, start signals required by the gate driving circuit on the display screen 100, and also includes data voltage signals required by the pixel circuit; the touch driving signal includes touch detection signals, which can be touch detection voltages. The driving chip 200 includes a plurality of first pins A1, and the driving chip 200 is electrically connected to the mainboard through the first pin A1, or is connected to the circuit devices on the flexible circuit board through the first pin A1. After the mainboard output signal is transmitted to the first pin A1, the driving chip 200 generates the driving signal according to the mainboard output signal received by the first pin A1. Therefore, the driving signal generated by the driving chip 200 is related to the signal transmitted by the first pin A1.

[0036] The driving chip 200 further comprises a second pin A2, the second pin A2 is a pin for transmitting a signal irrelevant to the display screen 100 driving signal generated by the driving chip 200. The driving signal generated by the driving chip 200 is irrelevant to the signal transmitted by the second pin A2, irrelevant means that the driving signal generated by the chip has no any connection with the signal transmitted by the second pin A2, the transmission lines of the first pin A1 and the second pin A2 are independent of each other, for example, the second pin A2 can be a non-enabled pin reserved on the driving chip 200. The non-enabled pin reserved is at least divided into two categories. The first category is the pin reserved to ensure that the driving chip 200 can be applied to different types of display screens 100. Specifically, to ensure that the driving chip 200 can be applied to different types of display screens 100, the pins provided on the driving chip 200 cover the pins for applying to various types of display screens 100, therefore when the driving chip 200 is applied to a certain type of display screen 100, part of the pins are not needed to be used, the pins not needed to be used are used as the second pin A2. The second category is the pin needed to be used in the debug mode of the driving chip 200, the debug pin is not needed to be used after the display device is shipped, therefore the debug pin can also be used as the second pin A2.

[0037] The driving chip 200 comprises a plurality of electrostatic protection circuits, each first pin A1 is electrically connected to an electrostatic protection circuit, each second pin A2 is electrically connected to an electrostatic protection circuit, electrically connected means that two end points are electrically connected through a wire.

[0038] In the related art, the second pin A2 is not electrically connected to the mainboard, and the first pin A1 is electrically connected to the mainboard. Specifically, the first pin A1 is connected to a flexible circuit board, the flexible circuit board is connected to a connector, and the connector is connected to the mainboard, thereby realizing the electrical connection between the first pin A1 and the mainboard. When performing an electrostatic test, static electricity needs to be applied to the display module from the connector, and the static electricity will be transmitted to the first pin A1 of the driving chip 200 along the conductive circuit, and the first pin A1 is connected to the corresponding static electricity protection circuit. When the static electricity is too large to exceed the range that can be borne by the static electricity protection circuit connected to the first pin A1, the first pin A1 or the related circuit connected thereto will be damaged. In the embodiment, the first pin A1 is electrically connected to the second pin A2, so that part of the static electricity originally reaching the first pin A1 can reach the second pin A2, so that the static electricity protection circuit connected to the first pin A1 and the static electricity protection circuit connected to the second pin A2 jointly bear the invading static electricity load, so that the static electricity energy borne by the first pin A1 is reduced, thereby reducing the risk of damage to the first pin A1 and the related circuit connected thereto. Since the display signal generated by the driving chip 200 is irrelevant to the signal transmitted by the second pin A2, the conduction of static electricity to the second pin A2 has no effect on the display performance and touch performance of the display module. When static electricity is introduced during the transportation and use of the display device, the risk of damage to the first pin A1 and the related circuit connected thereto is also reduced based on the same reason, which will not be described here.

[0039] In the embodiment, the at least one first pin A1 and the at least one second pin A2 are electrically connected. Specifically, since the number of second pins A2 is limited, in the embodiment, only part of the first pins A1 in the plurality of first pins A1 can be electrically connected to the second pins A2, and in particular, the key pins in the plurality of first pins A1 can be selected and electrically connected to the second pins A2. The key pins can include pins for transmitting power signals required by digital circuits and pins for transmitting MIPI data signals. It should be noted that when the number of second pins A2 is sufficient, each first pin A1 can be electrically connected to the second pin A2, thereby reducing the risk of electrostatic breakdown of each first pin A1 and the related circuit electrically connected thereto.

[0040] The display module of the embodiment comprises a display screen and a driving chip, the driving chip comprises at least one first pin and at least one second pin, the driving signal generated by the driving chip is related to the signal transmitted by the first pin; the display screen driving signal generated by the driving chip is irrelevant to the signal transmitted by the second pin. By electrically connecting the at least one first pin and the at least one second pin, the electrostatic protection circuit electrically connected to the first pin and the electrostatic protection circuit connected to the second pin jointly bear the invading electrostatic load, the risk of the first pin and the related circuit connected to the first pin being damaged is reduced, the electrostatic protection capability of the display module is improved, the reliability of the signal transmitted by the first pin is ensured, and then the reliability of the display screen driving signal generated by the driving chip is improved, and the display performance and touch performance of the display module are ensured.

[0041] Figure 2 is another structural schematic diagram of a display module provided by the embodiment of the present application, referring to Figure 2 Optionally, the display module further comprises a flexible circuit board 300, the flexible circuit board 300 comprises at least one third pin A3 and at least one fourth pin A4; wherein the at least one third pin A3 is electrically connected to the at least one first pin A1, and the at least one fourth pin A4 is electrically connected to the at least one second pin A2; the flexible circuit board 300 further comprises a connecting line, the third pin A3 and the fourth pin A4 are electrically connected through the connecting line 400, so as to electrically connect the first pin A1 electrically connected to the third pin A3 and the second pin A2 electrically connected to the fourth pin A4.

[0042] Specifically, the flexible circuit board 300 is bonded to the non-display area NAA of the display screen 100 and is provided with pins corresponding to the pins of the driving chip 200; the flexible circuit board 300 is also electrically connected to the mainboard, so as to receive the mainboard output signal from the mainboard and transmit it to the driving chip 200. The pins of the flexible circuit board 300 include a third pin A3 and a fourth pin A4, the third pin A3 is electrically connected to the first pin A1 of the driving chip 200 in a one-to-one correspondence, so as to transmit the mainboard output signal received from the mainboard to the first pin A1 of the driving chip 200. The fourth pin A4 is electrically connected to the second pin A2 of the driving chip 200, so as to transmit the signal of the fourth pin A4 of the flexible circuit board 300 to the second pin A2 of the driving chip 200. In the embodiment, the flexible circuit board 300 includes a connecting line 400, the connecting line 400 can electrically connect the third pin A3 and the fourth pin A4, so as to electrically connect the first pin A1 electrically connected by the third pin A3 and the second pin A2 electrically connected by the fourth pin A4, that is, by providing the connecting line 400 on the flexible circuit board 300, the electrical connection of the first pin A1 and the second pin A2 of the driving chip 200 is realized, so that when static electricity invades the driving chip 200 from the flexible circuit board 300, the static protection circuit connected by the first pin A1 and the static protection circuit connected by the second pin A2 jointly bear the invading static load, reducing the risk of the first pin A1 and the related circuit connected with the first pin A1 being damaged. Moreover, since the connection of the first pin A1 and the second pin A2 is realized on the flexible circuit board 300, when it is needed to enable the second pin A2 of the driving chip 200, the flexible circuit board 300 of the display module is only needed to be unbonded from the display screen 100, and then the display screen 100 is connected to other flexible circuit board 300 or circuit device, without the need to change the structure of the display screen 100, so that the manufacturing of the display screen 100 remains the original mask step, without additional process steps for the preparation of the display module.

[0043] Figure 3 is another structural schematic diagram of a display module provided by the embodiment of the present application, Figure 4 is Figure 3 the specific structural schematic diagram of the connector in the connection with the third pin and the fourth pin through the connecting line, wherein, in order to clearly show the structure of the connecting line 400, Figure 4 only the structure of one connecting line 400 is shown in the embodiment. For reference, Figure 3 and Figure 4Optionally, the display panel further comprises a connector 500, the connector 500 comprising a plurality of connection ports; the connector 500 comprising a plurality of connection ports; the connection line 400 comprising a first connection segment 410 and a second connection segment 420, a first end of the first connection segment 410 and a first end of the second connection segment 420 being electrically connected to the same connection port, a second end of the first connection segment 410 being electrically connected to the third pin A3, and a second end of the second connection segment 420 being electrically connected to the fourth pin A4; the line width of the second connection segment 420 being greater than the line width of the first connection segment 410; and / or the line length of the second connection segment 420 being less than the line length of the first connection segment 410.

[0044] The connector 500 can further comprise a plurality of input ports, wherein the input ports are connected to the mainboard of the display device; the connection ports of the connector 500 are connected to the pins of the flexible circuit board 300 (the pins of the flexible circuit board 300 comprising the third pin A3 and the fourth pin A4), and the pins of the flexible circuit board 300 are connected to the pins of the driving chip 200 (the pins of the driving chip 200 comprising the first pin A1 and the second pin A2), so that the electrical connection between the mainboard and the driving chip 200 can be achieved. The device area 310 is further provided on the flexible circuit board 300, and the device area 310 is provided with circuit devices. According to the actual needs of the driving chip 200, part of the first pin A1 can be connected to the circuit devices of the device area 310.

[0045] Specifically, the line width of the second connection segment 420 is greater than the line width of the first connection segment 410, which can make the transfer speed of the electric charge in the second connection segment 420 greater than the transfer speed of the electric charge in the first connection segment 410, which is conducive to the electrostatic energy being more conducted to the second pin A2, thereby further reducing the electrostatic energy reaching the first pin A1, and further reducing the risk of the first pin A1 and the related lines connected to the first pin A1 being damaged by static electricity. Since the display screen 100 driving signal generated by the driving chip 200 is irrelevant to the signal transmitted by the second pin A2, even if the second pin A2 and the related lines connected thereto are damaged by static electricity due to bearing excessive static load, it will not affect the display performance and touch performance of the display module.

[0046] The line length of the second connecting section 420 is less than that of the first connecting section 410, so that the time for the charges output from the same connecting port of the connector 500 to reach the fourth pin A4 is less than that to reach the third pin A3, which is beneficial to the electrostatic energy being conducted to the second pin A2 more, thereby further reducing the electrostatic energy reaching the first pin A1, and further reducing the risk of the first pin A1 and the related lines connected with the first pin A1 being damaged by static electricity. Since the display screen 100 driving signal generated by the driving chip 200 is irrelevant to the signal transmitted by the second pin A2, even if the second pin A2 and the related lines connected therewith are damaged by static electricity due to bearing excessive electrostatic load, the display performance and touch performance of the display module will not be affected.

[0047] Figure 5 is another structural schematic diagram of a display module provided by an embodiment of the present application, referring to Figure 5 Optionally, the non-display area NAA includes a bonding area NAA1, the bonding area NAA1 is provided with a first bonding terminal B1 electrically connected with the first pin A1 and a second bonding terminal B2 electrically connected with the second pin A2; the third pin A3 is electrically connected with the first bonding terminal B1, and the fourth pin A4 is electrically connected with the second bonding terminal B2.

[0048] Specifically, the first pin A1 and the second pin A2 of the driving chip 200 can be connected to the corresponding first bonding terminal B1 and second bonding terminal B2 through the lines on the display screen 100. The electrical connection between the third pin A3 of the flexible line board 300 and the first bonding terminal B1 can be realized by crimping or conductive glue connection, and the electrical connection between the fourth pin A4 of the flexible line board 300 and the second bonding terminal B2 can be realized by crimping or conductive glue connection.

[0049] Figure 6 is another structural schematic diagram of a display module provided by an embodiment of the present application, referring to Figure 6 Optionally, the non-display area NAA includes a bonding area NAA1, the bonding area NAA1 is provided with a third bonding terminal B3, the third bonding terminal B3 is a test pin of a display screen 100 test circuit on the display screen 100, and the test pin is used for inputting a test data signal when the display screen 100 is tested; at least one first pin A1 is electrically connected with at least one third bonding terminal B3.

[0050] Specifically, before the display screen 100 is bonded with the driving chip 200 and the flexible circuit board 300, the display screen 100 needs to be tested. When the display screen 100 is tested, a test signal is generally input to the display screen 100 through the way of pricking a needle, so as to realize the test of the display screen 100. When the display screen 100 is tested, the third bonding terminal B3 is electrically connected with the circuit structure in the display area AA of the display screen 100, the third bonding terminal B3 is electrically connected through pricking a needle, and the transmission of the test data signal to the circuit structure in the display area AA of the display screen 100 is realized. After the display module is bonded with the driving chip 200 and the flexible circuit board 300, the third bonding terminal B3 is disconnected from the circuit structure in the display area AA of the display screen 100, and the signal cannot be transmitted to the circuit structure in the display area AA of the display screen 100. Therefore, after the display device is shipped, the display signal of the display screen 100 is irrelevant to the signal transmitted by the third bonding terminal B3. In the embodiment, at least one first pin A1 of the driving chip 200 is electrically connected with the third bonding terminal B3, so that the electrostatic protection circuit connected with the first pin A1 and the electrostatic protection circuit connected with the third bonding terminal B3 jointly bear the invading electrostatic load, the electrostatic energy borne by the first pin A1 is reduced, and the risk that the first pin A1 and the related circuit connected with the first pin A1 are damaged is reduced. Since the display signal of the display screen 100 generated by the driving chip 200 is irrelevant to the signal transmitted by the third bonding terminal B3, the conduction of the electrostatic to the third bonding terminal B3 has no influence on the display performance and the touch performance of the display module. Since the number of the second pins A2 of the driving chip 200 is limited, by electrically connecting part of the pins of the driving chip 200 with the third bonding terminal B3, more first pins A1 can be connected to the pins irrelevant to the display signal of the display screen 100 output by the driving chip 200, so that the electrostatic load borne by more first pins A1 is reduced, and the electrostatic protection capability of the display module is further improved. In the optional embodiment of the application, the first pin A1 can be connected with the second pin A2 and the third bonding terminal B3 at the same time, and the risk that the first pin A1 and the related circuit connected with the first pin A1 are damaged is further reduced.

[0051] With reference to Figure 6 , in order to control the electrical connection state of the test pin and the circuit structure in the display area of the display screen 100, optionally, the display screen 100 is provided with a control switch 600 electrically connected with the test pin in one-to-one correspondence, the control end of the control switch 600 is electrically connected with the driving chip 200, the first end of the control switch 600 is electrically connected with the corresponding test pin, and the second end of the control switch 600 is connected with the driving signal line in the display screen 100; the driving chip 200 is used for controlling the control switch 600 to be turned off when the display screen 100 works.

[0052] Specifically, when the display screen 100 is tested before the display screen 100 is bonded with the driving chip 200, the control end of the control switch 600 can be connected by the way of the needle to provide a conduction control signal to the control end of the control switch 600, so that the control switch 600 is turned on. The first end of the control switch 600 is connected to the test data signal by the way of the needle, and then the test data signal is transmitted to the second end of the control switch 600, so that the test data signal is transmitted to the driving signal line, and the circuit structure of the display area is transmitted by the driving signal, so as to realize the test of the display screen 100. After the test of the display screen 100 is completed, the display screen 100 is bonded with the driving chip 200, and the control end of the control switch 600 is electrically connected with the driving chip 200. When the display screen 100 works, for example, the display screen 100 displays and / or touches, the driving chip 200 sends an off control signal to the control switch 600, so that the control switch 600 is turned off, and then the test pin is connected with the first pin A1, and the static electricity energy borne by the first pin A1 is shared, which does not affect the display performance and touch performance of the display screen 100.

[0053] Optionally, the display screen 100 test circuit can be a display screen 100 lighting test circuit (i.e. a screen test circuit) or a display screen 100 touch test circuit. When the display screen 100 test circuit is the display screen 100 lighting test circuit, the driving signal line is the data line, and the test data signal is the data voltage. When the display screen 100 test circuit is the display screen 100 touch test circuit, the driving signal line is the touch signal line, and the test data signal is the touch detection voltage.

[0054] When the plurality of first pins A1 are electrically connected with the third bonding terminals B3, the third bonding terminals B3 connected with different first pins A1 are different, that is, the first pins A1 are electrically connected with the third bonding terminals B3 one by one. In this way, the mutual influence between the signals transmitted by different first pins A1 can be ensured, and the driving chip 200 can work normally.

[0055] Continuing to refer to Figure 1 On the basis of the above embodiments, optionally, each first pin A1 is arranged in the first area 210 of the driving chip 200, each second pin A2 is arranged in the second area 220 of the driving chip 200, the connection direction of the first area 210 and the second area 220 is the first direction x1, the first direction x1 is perpendicular to the second direction y1, and the second direction y1 is the connection direction of the driving chip 200 and the display screen 100.

[0056] Specifically, the first pin A1 is arranged in the same region, the second pin A2 is arranged in the same region, and the first pin A1 and the second pin A2 are arranged in different regions, so that after the driving chip 200 is connected with the flexible circuit board 300, the signal lines connected with the first pin A1 on the flexible circuit board 300 (hereinafter referred to as transmission signal lines) are also relatively concentrated, so that the signal lines connected with the second pin A2 are introduced as little as possible between the transmission signal lines, the wiring is relatively easy to realize, and the influence on the signals transmitted by the transmission signal lines is relatively small.

[0057] Figure 7 is another structural schematic diagram of a display module provided by the embodiment of the present application, referring to Figure 7 Optionally, the driving chip 200 includes two second regions 220, and the first region 210 is arranged between the two second regions 220. In this way, the first pin A1 is located in the relatively middle region of the driving chip 200 in the first direction x1, so that the signal lines connected with the second pin A2 are introduced as little as possible between the transmission signal lines, and the wiring is relatively easy to realize.

[0058] On the basis of the above-mentioned embodiments, when the plurality of first pins A1 are electrically connected with the plurality of second pins A2, the second pins A2 electrically connected with different first pins A1 are different. In this way, it can be ensured that the different first pins A1 are not electrically connected with each other, the mutual influence of the signals between the first pins A1 transmitting different signals is avoided, the driving chip 200 works normally, and the display performance and the touch performance of the display screen 100 are good.

[0059] On the basis of the above-mentioned embodiments, optionally, at least one first pin A1 is electrically connected with a plurality of second pins A2. In this way, the electrostatic energy originally reaching the first pin A1 can be borne by more second pins A2 and the first pin A1, the electrostatic load borne by the first pin A1 is further reduced, and the risk of the first pin A1 and the related lines connected with the first pin A1 being damaged is further reduced.

[0060] The embodiment of the present application also provides a display device, Figure 8 is a structural schematic diagram of a display device provided by the embodiment of the present application, referring to Figure 8 The display device 1 provided by the embodiment of the present application includes the display module 10 provided by any of the above-mentioned embodiments of the present application. The display device can be a mobile phone as shown in the figure, or a computer, a television, a smart wearable display device, etc., and the embodiment of the present application does not specially limit this. Figure 8

[0061] ​Note that the above merely describes preferred embodiments of the present application and the principles of the technology applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, modifications and substitutions can be made without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A display module, characterized by The display module comprises: a display screen and a driving chip; wherein the display screen comprises a display area and a non-display area; the driving chip is arranged in the non-display area of the display screen and is used to generate at least a driving signal for driving the display screen; the driving chip comprises at least one first pin and at least one second pin, the driving signal generated by the driving chip is related to the signal transmitted by the first pin, and the driving signal generated by the driving chip is irrelevant to the signal transmitted by the second pin; at least one first pin and at least one second pin are electrically connected; the display module further comprises a flexible circuit board, the flexible circuit board comprises at least one third pin and at least one fourth pin; wherein at least one third pin is electrically connected to at least one first pin, and at least one fourth pin is electrically connected to at least one second pin; the flexible circuit board further comprises a connecting line, the third pin and the fourth pin are electrically connected through the connecting line, so as to electrically connect the first pin electrically connected to the third pin and the second pin electrically connected to the fourth pin; the display module further comprises a connector, the connector comprises a plurality of connection ports; the connecting line comprises a first connecting segment and a second connecting segment, the first end of the first connecting segment and the first end of the second connecting segment are electrically connected to the same connection port, the second end of the first connecting segment is electrically connected to the third pin, and the second end of the second connecting segment is electrically connected to the fourth pin; the line width of the second connecting segment is greater than the line width of the first connecting segment; and / or the line length of the second connecting segment is less than the line length of the first connecting segment.

2. The display module of claim 1, wherein, The second pin is a non-enabled pin reserved on the driving chip.

3. The display module of claim 1, wherein the non-display area comprises a bonding area, the bonding area is provided with a first bonding terminal electrically connected to the first pin and a second bonding terminal electrically connected to the second pin; the third pin is electrically connected to the first bonding terminal, and the fourth pin is electrically connected to the second bonding terminal.

4. The display module of any of claims 1-3, wherein, The driving chip comprises a plurality of electrostatic protection circuits, and at least one first pin and at least one second pin are respectively connected to corresponding electrostatic protection circuits.

5. The display module of any of claims 1-3, wherein, The non-display area comprises a bonding area, the bonding area is provided with a third bonding terminal, the third bonding terminal is a test pin of a display screen test circuit on the display screen, and the test pin is used to input a test data signal when the display screen is tested; at least one first pin and at least one third bonding terminal are electrically connected.

6. The display module of claim 5, wherein, The first pin and the third bonding terminal are electrically connected one by one.

7. The display module of any of claims 1-3, wherein, Each first pin is arranged in a first area of the driving chip, each second pin is arranged in a second area of the driving chip, the connection direction of the first area and the second area is a first direction, the first direction is perpendicular to a second direction, and the second direction is the connection direction of the driving chip and the display screen.

8. The display module of any of claims 1-3, wherein, When a plurality of the first pins are electrically connected to a plurality of the second pins, different first pins are electrically connected to different second pins.

9. The display module of any of claims 1-3, wherein, At least one of the first pins is electrically connected to a plurality of the second pins.

10. A display device, characterized by comprising: The display module comprises the display module according to any one of claims 1-9.

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