Driving circuit board and display module

Abstract

The invention discloses a driving circuit board and a display module, and belongs to the technical field of display. The driving circuit board comprises a circuit board body, a display driving part and a touch control part. The first grounding part and the second grounding part in the same grounding conductive layer in the circuit board body are separated, so that the first grounding part and the second grounding part are not connected, and even if the working frequency of the display driving part and the working frequency of the touch control part coincide, it can be guaranteed that the touch control display panel cannot be damaged when the driving circuit board drives the touch control display panel. The display effect and the touch effect of the touch display panel are good.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a driving circuit board and a display module. Background Art

[0002] Organic Light-Emitting Diode (OLED for short) has attracted much attention due to its advantages such as self-luminescence, rich colors, fast response speed, wide viewing angle, light weight, thin thickness, low power consumption, and flexible display. Now it has been widely used in mobile phones, TVs, wearable devices and other devices.

[0003] Currently, an OLED display module usually includes a touch display panel and a driving circuit board electrically connected to the touch display panel. A display driving component and a touch component are usually arranged on the driving circuit board. Among them, the driving circuit board can control the touch display panel to display an image through the display driving component; the driving circuit board can also enable the touch display panel to have a touch function through the touch component, so as to obtain the touch position of the user on the touch display panel.

[0004] However, during the operation of the display driving component and the touch component in the driving circuit board, it is very easy to generate an interference problem between them, resulting in poor display and touch effects of the touch display panel. Summary of the Invention

[0005] Embodiments of the present application provide a driving circuit board and a display module, which can solve the problem that both the display effect and the touch effect of the touch display panel in the prior art are poor. The technical solutions are as follows:

[0006] On the one hand, a driving circuit board is provided, including: a circuit board body, a display driving component, and a touch component;

[0007] The circuit board body has a plurality of conductive layers arranged in a stacked manner. The plurality of conductive layers include a top conductive layer and at least one ground conductive layer. The same ground conductive layer includes a first ground portion and a second ground portion that are separately arranged;

[0008] The display driving component and the touch component are both fixed on the circuit board body. The top conductive layer is the conductive layer closest to the display driving component and the touch component among the plurality of conductive layers, and both the display driving component and the touch component are connected to the top conductive layer;

[0009] Among them, the first ground portion is used to cooperate with the display driving component, and the second ground portion is used to cooperate with the touch component.

[0010] Optionally, there is a gap between the first grounding portion and the second grounding portion in the same grounding conductive layer.

[0011] Optionally, the top conductive layer includes a top grounding portion, and both the first grounding portion and the second conductive portion are connected to the top grounding portion.

[0012] Optionally, the driving circuit board further includes a filtering circuit, and the filtering circuit has a first end, a second end, and a third end;

[0013] The first end of the filtering circuit is connected to the first grounding portion, the second end of the filtering circuit is connected to the second grounding portion, and the third end of the filtering circuit is electrically connected to the top grounding portion.

[0014] Optionally, the filtering circuit includes a first capacitor and a second capacitor;

[0015] One end of the first capacitor is connected to the first grounding portion, and the other end is connected to the top grounding portion. One end of the second capacitor is connected to the second grounding portion, and the other end is connected to the top grounding portion;

[0016] Wherein, the capacitance value of the first capacitor is different from the capacitance value of the second capacitor.

[0017] Optionally, the capacitance value of the first capacitor is greater than the capacitance value of the second capacitor;

[0018] Or, the capacitance value of the second capacitor is greater than the capacitance value of the first capacitor.

[0019] Optionally, the driving circuit board further includes a connector fixed on the circuit board body, and the connector cooperates with the top grounding portion.

[0020] Optionally, in the case where the plurality of conductive layers include a plurality of the grounding conductive layers, the first grounding portions in different grounding conductive layers are connected, and the second grounding portions in different grounding conductive layers are connected.

[0021] Optionally, the plurality of grounding conductive layers are arranged adjacent to each other in a direction perpendicular to the circuit board body.

[0022] Optionally, the plurality of conductive layers further include a plurality of signal line layers located between the top conductive layer and the at least one grounding conductive layer.

[0023] Optionally, the display driving component includes a timing controller and a power management chip; the touch component includes a touch chip.

[0024] On the other hand, a display module is provided, including: a touch display panel, and a driving circuit board electrically connected to the touch display panel, where the driving circuit board is the above-mentioned driving circuit board.

[0025] Optionally, the display module further includes: a flexible circuit board, the flexible circuit board is bonded to the touch display panel, and the driving circuit board is electrically connected to the touch display panel through the flexible circuit board.

[0026] The beneficial effects brought by the technical solutions provided in the embodiments of the present application at least include:

[0027] By separating the first grounding part and the second grounding part in the same grounding conductive layer in the circuit board body, there is no connection relationship between the two. That is, even if the operating frequencies of the display driving component for cooperating with the first grounding part and the touch component for cooperating with the second grounding part overlap, it can be ensured that the interference generated by the display driving component during operation will not be coupled to the touch component through the first grounding part and the second grounding part in the conductive grounding conductive layer. Similarly, it can also be ensured that the interference generated by the touch component during operation will not be coupled to the display driving component through the second grounding part and the first grounding part in the conductive grounding conductive layer. In this way, even if the operating frequencies of the display driving component and the touch component overlap, it can be ensured that when the driving circuit board drives the touch display panel, both the display effect and the touch effect of the touch display panel are good. Therefore, there is no need to replace the display driving component and the touch component in the driving circuit board, which can effectively reduce the cost of the display module integrated with such a driving circuit board. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 is a top view of a driving circuit board provided by an embodiment of the present application;

[0030] Figure 2 is Figure 1 a schematic diagram of the film layer structure of the driving circuit board shown at A-A';

[0031] Figure 3 is a schematic diagram of the film layer structure of the circuit board body in a driving circuit board provided by an embodiment of the present application;

[0032] Figure 4It is a schematic diagram of the film layer structure of another driving circuit board provided by an embodiment of the present application;

[0033] Figure 5 It is a circuit diagram of a filtering circuit provided by an embodiment of the present application;

[0034] Figure 6 It is a top view of another driving circuit board provided by an embodiment of the present application;

[0035] Figure 7 It is a top view of a display module provided by an embodiment of the present application. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0037] Current driving circuit boards generally include: a circuit board body, a display driving component, and a touch control component. Here, both the display driving component and the touch control component can be fixed on the circuit board body and are electrically connected to the circuit board body.

[0038] There are usually multiple conductive layers distributed inside the circuit board body. At least one side conductive layer among the multiple conductive layers can be a grounded conductive layer. The same grounded conductive layer includes: a first grounding portion for cooperating with the display driving component, and a second grounding portion for cooperating with the touch control component. Among them, the first grounding portion and the second grounding portion in the same grounded conductive layer are directly connected.

[0039] However, the operating frequencies of the display driving component and the touch control component in the driving circuit board usually overlap. For example, the frequency ranges of various display signals involved in the operation of the display driving component are respectively: 100 kHz to 300 kHz, 800 kHz to 1.5 MHz, 1.8 MHz to 2.1 MHz, etc. The frequency ranges of various touch control signals involved in the operation of the touch control component are respectively: 100 kHz to 380 kHz, 15 kHz to 210 kHz, 250 Hz to 300 Hz, 1.8 MHz, etc. Since the display signals of 100 kHz to 300 kHz overlap with the touch control signals of 100 kHz to 380 kHz. Therefore, the operating frequencies of the display driving component and the touch control component in the driving circuit board usually overlap.

[0040] In this way, when the first grounding portion and the second grounding portion in the grounding conductive layer of the circuit board body are directly connected, the interference generated during the operation of the display driving component is very likely to be coupled to the touch component through the first grounding portion and the second grounding portion in the conductive grounding conductive layer, resulting in the touch driving signal applied by the touch component and the received touch sensing signal being affected, and it is very easy to have a situation of sensing errors, thereby resulting in a poor touch effect of the touch display panel. Especially for a touch display panel that is touched by an active pen, because the signal amounts of the touch driving signal applied by the touch component and the received touch sensing signal are both large, the degree of influence on the touch driving signal and the touch sensing signal is greater.

[0041] Similarly, the interference generated during the operation of the touch component is also likely to be coupled to the display driving component through the second grounding portion and the first grounding portion in the conductive grounding conductive layer, resulting in an abnormality during the process of the display driving component applying a scanning driving signal to the touch display panel. When the touch display panel needs to display a low gray-scale image, an abnormal phenomenon similar to water ripples is very likely to occur, thereby resulting in a poor display effect of the touch display panel.

[0042] Generally, in order to improve the touch effect and display effect of the touch display panel, it is necessary to replace the display driving component and the touch component in the driving circuit board with: a display driving component and a touch component with non-overlapping operating frequencies. However, when adopting this method of replacing the display driving component and the touch component again, it is also necessary to redesign the driving circuit board and verify the reliability of the newly designed driving circuit board, resulting in a high cost of the driving circuit board.

[0043] The embodiment of the present application provides a driving circuit board, which can be used to drive a touch display panel, so that the touch display panel can display an image normally and can enable the touch display panel to have a touch function. Please refer to Figure 1 and Figure 2 , Figure 1 is a top view of a driving circuit board provided by the embodiment of the present application, Figure 2 is Figure 1 a schematic diagram of the film layer structure of the driving circuit board shown at A-A'. The driving circuit board 000 may include: a circuit board body 100, a display driving component 200, and a touch component 300. Among them, both the display driving component 200 and the touch component 300 in the driving circuit board 000 can be fixed on the circuit board body 100.

[0044] The circuit board body 100 in the driving circuit board 000 may have a plurality of conductive layers arranged in a stacked manner. The plurality of conductive layers in the circuit board body 100 may include: a top conductive layer 110 and at least one grounding conductive layer 120.

[0045] Here, the top conductive layer 110 in the circuit board body 100 can be the conductive layer closest to the display driving component 200 and the touch component 300 among the multiple conductive layers of the circuit board body 100, and both the display driving component 200 and the touch component 300 can be connected to the top conductive layer 110. In this way, both the display driving component 200 and the touch component 300 in the driving circuit board 000 can be connected to the circuit board body 100 through the top conductive layer 110.

[0046] In this application, the same grounding conductive layer 120 can include: a first grounding portion 121 and a second grounding portion 122 that are separately arranged. That is, in the same grounding conductive layer 120, there is no connection relationship between the first grounding portion 121 and the second grounding portion 122, the first grounding portion 121 does not transmit signals to the second grounding portion 122, and the second grounding portion 122 does not transmit signals to the first grounding portion 121.

[0047] Among them, the first grounding portion 121 in the grounding conductive layer 120 is used to cooperate with the display driving component 200, and the second grounding portion 122 in the grounding conductive layer 120 is used to cooperate with the touch component 300. Exemplarily, the grounding end of the display driving component 200 can be connected to the first grounding portion 121 in the grounding conductive layer 120; the grounding end of the touch component 300 can be connected to the second grounding portion 122 in the grounding conductive layer 120.

[0048] In the embodiment of this application, since in the same grounding conductive layer 120, the first grounding portion 121 for cooperating with the display driving component 200 and the second grounding portion 122 for cooperating with the touch component 300 are separately arranged and there is no connection relationship between them. Therefore, even if there is an overlap in the operating frequencies of the display driving component 200 and the touch component 300, it can be ensured that the interference generated by the display driving component 200 during operation will not be coupled to the touch component 300 through the first grounding portion 121 and the second grounding portion 122 in the conductive grounding conductive layer 120, so that the touch driving signal applied by the touch component 300 and the effect of the received touch sensing signal are better, and further the probability of sensing errors can be reduced.

[0049] Similarly, it can also be ensured that the interference generated by the touch component 300 during operation will not be coupled to the display driving component 200 through the second grounding portion 122 and the first grounding portion 121 in the conductive grounding conductive layer 120, so that the probability of abnormality during the process of the display driving component 200 applying a scanning driving signal to the touch display panel is relatively low, and the display effect of the touch display panel when displaying a low gray-scale image can be effectively improved.

[0050] In this way, even when the operating frequencies of the display driving component 200 and the touch control component 300 overlap, it can be ensured that when the driving circuit board 000 drives the touch display panel, both the display effect and the touch control effect of the touch display panel are relatively good. For this reason, there is no need to replace the display driving component 200 and the touch control component 300 in the driving circuit board 000, which can effectively reduce the cost of the display module integrated with such a driving circuit board 000.

[0051] In summary, the driving circuit board provided by the embodiment of the present application includes: a circuit board body, a display driving component, and a touch control component. By separating the first grounding portion and the second grounding portion in the same grounding conductive layer in the circuit board body, so that there is no connection relationship between the two, that is, even when the operating frequencies of the display driving component used in cooperation with the first grounding portion and the touch control component used in cooperation with the second grounding portion overlap, it can be ensured that the interference generated by the display driving component during operation will not be coupled to the touch control component through the first grounding portion and the second grounding portion in the conductive grounding conductive layer. Similarly, it can also be ensured that the interference generated by the touch control component during operation will not be coupled to the display driving component through the second grounding portion and the first grounding portion in the conductive grounding conductive layer. In this way, even when the operating frequencies of the display driving component and the touch control component overlap, it can be ensured that when the driving circuit board drives the touch display panel, both the display effect and the touch control effect of the touch display panel are relatively good. For this reason, there is no need to replace the display driving component and the touch control component in the driving circuit board, which can effectively reduce the cost of the display module integrated with such a driving circuit board.

[0052] In the embodiment of the present application, as Figure 3 shown, Figure 3 FIG. 10 is a schematic diagram of the film layer structure of the circuit board body in a driving circuit board provided by the embodiment of the present application. The circuit board body 100 may include: a substrate 101, and a plurality of conductive layers stacked on one side of the substrate 101 and a plurality of insulating layers 102 stacked.

[0053] Here, the plurality of conductive layers and the plurality of insulating layers 102 in the circuit board body 100 may be alternately arranged. That is to say, an insulating layer 102 may be distributed between two adjacent conductive layers, and a conductive layer may be distributed between two adjacent insulating layers 102. In this case, the two adjacent conductive layers can be insulated through the insulating layer 102 located therebetween, so that even if lines for transmitting different signals are respectively distributed in the two adjacent conductors 101, it can be ensured that no short-circuit phenomenon will occur between them.

[0054] Optionally, as Figure 3As shown, within the same ground conductive layer 120 in the circuit board body 100, there may be a gap d between the first ground portion 121 and the second ground portion 122.

[0055] That is to say, the first ground portion 121 for cooperating with the display driving component 200 can be disconnected from the second ground portion 122 for cooperating with the touch control component 300 through this gap d.

[0056] In this way, by providing the gap d between the first ground portion 121 and the second ground portion 122 in the same ground conductive layer 120, it can be ensured that the first ground portion 121 and the second ground portion 122 in the same ground conductive layer 120 are separately arranged, and it can also be ensured that the overall distribution area of the ground conductive layer 120 in the circuit board body 100 is relatively large, so as to ensure that the ground conductive layer 120 can still play a role in shielding external electromagnetic wave signals.

[0057] In the embodiment of the present application, as Figure 4 shown, Figure 4 is a schematic diagram of the film layer structure of another driving circuit board provided by the embodiment of the present application. The top conductive layer 110 in the circuit board body 100 may include: a top ground portion 111.

[0058] Among them, both the first ground portion 121 and the second ground portion 122 in the same ground conductive layer 120 can be connected to the top ground portion 111 in the top conductive layer 110. Exemplarily, the first ground portion 121 and the second ground portion 122 in the ground conductive layer 120 can be connected to the top ground portion 111 by setting connection holes in the circuit board body 100. For example, a first connection hole and a second connection hole can be provided between the top conductive layer 110 and the ground conductive layer 120. The top ground portion 111 can be connected to the first ground portion 121 through the first connection hole and can be connected to the first ground portion 121 through the second connection hole.

[0059] In this way, although the first ground portion 121 and the second ground portion 122 in the same ground conductive layer 120 are separately arranged, the first ground portion 121 and the second ground portion 122 in the same ground conductive layer 120 can be aggregated in the top conductive layer 110 through the top ground portion 111.

[0060] Thus, there is no need to redesign the touch display panel connected to such a driving circuit board 000, nor is there a need to redesign the main control component (e.g., the main board) connected to such a driving circuit board 000. That is to say, by replacing the driving circuit board in the display device with the driving circuit board 000 in the present application, without replacing the touch display panel and the main touch component in the display device, the display device can work properly, and it can be ensured that the display device has good display and touch effects, thereby further reducing the cost of the display device.

[0061] It should be noted that when the multiple conductive layers in the circuit board body 100 include multiple ground conductive layers 120, the first grounding portions 121 in different ground conductive layers 120 are connected, and the second grounding portions 122 in different ground conductive layers 120 are connected. In this way, after summarizing the first grounding portions 121 in different ground conductive layers 120 in the circuit board body 100, they can be connected to the top grounding portion 111 in the top conductive layer 110. Similarly, after summarizing the second grounding portions 122 in different ground conductive layers 120 in the circuit board body 100, they can be connected to the top grounding portion 111 in the top conductive layer 110.

[0062] Here, when the multiple conductive layers in the circuit board body 100 include multiple ground conductive layers 120, the multiple ground conductive layers 120 can be arranged adjacent to each other in a direction perpendicular to the circuit board body 100. That is to say, the multiple ground conductive layers 120 in the circuit board body 100 can be stacked in sequence in a direction perpendicular to the substrate 101. In this way, the two first grounding portions 121 in two adjacent ground conductive layers 120 can be connected through a first slot provided on the insulating layer 102 distributed therebetween, and the two second grounding portions 122 in two adjacent ground conductive layers 120 can be connected through a second slot provided on the insulating layer 102 distributed therebetween.

[0063] In the embodiment of the present application, as Figure 3 shown, the multiple conductive layers in the circuit board body 100 may further include: a plurality of signal line layers 130 located between the top conductive layer 110 and at least one ground conductive layer 120.

[0064] Among them, signal transmission lines are distributed on each signal line layer 130, and these signal transmission lines can be connected to each component provided on the circuit board body 100. For example, these signal transmission lines can be connected to the display driving component 200 and the touch component 300. Through these signal transmission lines, signal transmission between the display driving component 200 and the touch display panel can be realized, and signal transmission between the touch component 300 and the touch display panel can be realized.

[0065] In this application, as Figure 3 shown, the multiple conductive layers in the circuit board body 100 may further include: a bottom conductive layer 140 located on a side of at least one ground conductive layer 120 facing away from the top conductive layer 110. That is, the bottom conductive layer 140 may be the conductive layer in the multiple conductive layers that is farthest from the driving component 200 and the touch component 300. The bottom conductive layer 140 may be distributed on the substrate 101 and in contact with the substrate 101. In a possible implementation manner, the bottom conductive layer 140 may serve as a signal shielding layer in the circuit board body 100 to shield the interference of external electromagnetic wave signals.

[0066] Optionally, the driving circuit board 000 may further include: a filtering circuit 400. As Figure 5 shown, Figure 5 is a circuit diagram of a filtering circuit provided by an embodiment of this application. The filtering circuit 400 may have a first end, a second end, and a third end.

[0067] Among them, the first end of the filtering circuit 400 may be connected to the first grounding portion 121, the second end of the filtering circuit 400 may be connected to the second grounding portion 122, and the third end of the filtering circuit 400 may be connected to the top grounding portion 111 of the top conductive layer 110. That is, the first grounding portion 121 and the second grounding portion 122 may be aggregated with the top grounding portion 111 in the top conductive layer 110 through the filtering circuit 400. In this way, by filtering the interference signals through the filtering circuit 400, the probability of mutual interference generated by the display driving component 200 and the touch component 300 in the driving circuit board 000 during operation can be reduced, thereby further improving the display effect and touch signals of the touch display panel.

[0068] In a possible implementation manner, the filtering circuit 400 in the driving circuit board 000 may include: a first capacitor 410 and a second capacitor 420. Here, both the first capacitor 410 and the second capacitor 420 may be capacitor components fixed on the circuit board body 100, and the first capacitor 410 and the second capacitor 420 in the filtering circuit 400, as well as the display driving component 200 and the touch component 300, may be distributed on the same side of the circuit board body 100.

[0069] Among them, one end of the first capacitor 410 in the filtering circuit 400 may be connected to the first grounding portion 121, and the other end may be connected to the top grounding portion 111. One end of the second capacitor 420 in the filtering circuit 400 may be connected to the second grounding portion 122, and the other end may be connected to the top grounding portion 111.

[0070] In this application, the capacitance value of the first capacitor 410 can be different from that of the second capacitor 420. Exemplarily, in one possible case, the capacitance value of the first capacitor 410 can be greater than that of the second capacitor 420. In another possible case, the capacitance value of the second capacitor 420 can also be greater than that of the first capacitor 410.

[0071] Among the first capacitor 410 and the second capacitor 420 of the filter circuit 400, the capacitor with a larger capacitance value can be used to filter low-frequency signal interference, and the capacitor with a smaller capacitance value can be used to filter high-frequency signal interference. In this way, the filter circuit 400 can simultaneously filter high-frequency signal interference and low-frequency signal interference, effectively improving the filtering effect on interference signals, and further reducing the probability of mutual interference generated by the display driving component 200 and the touch control component 300 in the driving circuit board 000 during operation.

[0072] Optionally, as Figure 6 shown, Figure 6 is a top view of another driving circuit board provided by an embodiment of this application. The driving circuit board 000 may further include: a connector 500 fixed on the circuit board body 100. Here, the connector 500, the display driving component 200, and the touch control component 300 in the driving circuit board 000 can all be distributed on the same side of the circuit board body 100. And the connector 500 in the driving circuit board 000 can cooperate with the top layer grounding part 111 in the top layer conductive layer 110. Exemplarily, the grounding end of the connector 500 can be connected to the top layer grounding part 111.

[0073] In this application, the connector 500 in the driving circuit board 000 is used to connect to the main control component. For example, there is a connection circuit board distributed between the driving circuit board 000 and the main control component. One end of the connection circuit board can be connected to the connector 500 by plugging, so that one end of the connection circuit board can be connected to the driving circuit board 500; the other end of the connection circuit board can also be connected to the main control component by plugging. In this way, the main control component can transmit signals to the driving circuit board 500 through the connection circuit board and the connector 500, and the driving circuit board 500 can also transmit signals to the main control component through the connector 500 and the connection circuit board.

[0074] In an embodiment of this application, as Figure 6 shown, the display driving component 200 in the driving circuit board 000 may include: a timing controller (abbreviation: T-con) 201 and a power management chip (abbreviation: PMIC) 202. The touch control component 300 in the driving circuit board 000 may include: a touch control chip.

[0075] Here, the timing controller 201 can provide various signals required by the touch display panel, such as timing control signals, display data signals, and other control signals (such as gate drive signals). The timing controller 201 can also process the display data signals to improve the image quality effect of the touch display panel.

[0076] The power management chip 202 can be used to provide voltage signals for the touch analog front-end module in the source drive chip bonded on the touch display panel or the touch digital back-end module in the timing controller 201. The power management chip 202 can also provide operating voltages for other units or modules.

[0077] The touch chip can be used to provide touch drive signals, and can determine the touch position of the user on the touch display panel according to the provided touch drive signals and the received touch sensing signals.

[0078] In summary, the driving circuit board provided by the embodiment of the present application includes: a circuit board body, a display driving component, and a touch component. By separating the first grounding portion and the second grounding portion in the same grounding conductive layer in the circuit board body, there is no connection relationship between the two. That is, even when the operating frequencies of the display driving component for cooperating with the first grounding portion and the touch component for cooperating with the second grounding portion overlap, it can be ensured that the interference generated by the display driving component during operation will not be coupled to the touch component through the first grounding portion and the second grounding portion in the conductive grounding conductive layer. Similarly, it can also be ensured that the interference generated by the touch component during operation will not be coupled to the display driving component through the second grounding portion and the first grounding portion in the conductive grounding conductive layer. In this way, even when the operating frequencies of the display driving component and the touch component overlap, it can be ensured that when the driving circuit board drives the touch display panel, both the display effect and the touch effect of the touch display panel are good. Therefore, there is no need to replace the display driving component and the touch component in the driving circuit board, which can effectively reduce the cost of the display module integrated with such a driving circuit board.

[0079] The embodiment of the present application also provides a display module. As Figure 7 shown, Figure 7 is a top view of a display module provided by the embodiment of the present application. The display module may include: a touch display panel 001, and a driving circuit board 000 electrically connected to the touch display panel 001. Among them, the driving circuit board 000 can be the driving circuit board 000 shown in the above embodiment.

[0080] Optionally, the display module may further include: a flexible circuit board 002. The flexible circuit board 002 may be bound and connected to the touch display panel 001, and the driving circuit board 000 may be electrically connected to the touch display panel 001 through the flexible circuit board 002.

[0081] In the present application, the display module may further include: a source driver chip 003 bound to the non-display area of the touch display panel 001. The driving circuit board 000 may perform driving control on the source driver chip 003, so that the source driver chip 003 can drive the touch display panel 001 to display an image.

[0082] In a possible implementation manner, the flexible circuit board 002 may be bent to the back of the touch display panel 001, so that the screen-to-body ratio of the front of the touch display panel 001 is relatively high.

[0083] In another possible implementation manner, a part of the touch display panel 001 located in the non-display area may be bent to the back of the touch display panel 001, so that the source driver chip 003, the flexible circuit board 002, and the driving circuit board 000 can all be distributed on the back of the touch display panel 001, which can further increase the screen-to-body ratio of the front of the touch display panel 001.

[0084] The present application also provides a display device, which may be any product or component with a display function such as a mobile phone, a tablet computer, a television, an advertising machine, a display screen, a digital photo frame, etc.

[0085] Among them, the display device includes: a main control component, and a display module electrically connected to the main control component. Here, the display module may include the display module shown above, the main control component may be a main board, and the main control component may be connected to the driving circuit board in the display module through a connection circuit board.

[0086] It should be noted that in the drawings, the dimensions of layers and regions may be exaggerated for clarity of illustration. Moreover, it can be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be an intermediate layer. Additionally, it can be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element, or there may be more than one intermediate layer or element. Additionally, it can also be understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0087] In the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0088] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A driving circuit board, characterized in that: include: Circuit board body, display driver component and touch control component; The circuit board body has a plurality of conductive layers stacked in layers, the plurality of conductive layers include: a top conductive layer and at least one ground conductive layer, and the same ground conductive layer includes: a first ground portion and a second ground portion separately arranged; The display driving component and the touch control component are both fixed on the circuit board body, the top conductive layer is the conductive layer closest to the display driving component and the touch control component among the multiple conductive layers, and the display driving component and the touch control component are both connected to the top conductive layer; The first grounding portion is used to cooperate with the display driving component, and the second grounding portion is used to cooperate with the touch control component.

2. The driving circuit board according to claim 1, characterized in that: In the same ground conductive layer, there is a gap between the first ground portion and the second ground portion.

3. The driving circuit board according to claim 1, characterized in that: The top conductive layer includes a top grounding portion, and the first grounding portion and the second conductive portion are both connected to the top grounding portion.

4. The driving circuit board according to claim 3, characterized in that: The driving circuit board further comprises: a filter circuit, the filter circuit having a first end, a second end and a third end; The first end of the filter circuit is connected to the first ground portion, the second end of the filter circuit is connected to the second ground portion, and the third end of the filter circuit is electrically connected to the top-layer ground portion.

5. The driving circuit board according to claim 4, characterized in that: The filter circuit comprises: a first capacitor and a second capacitor; One end of the first capacitor is connected to the first grounding portion, and the other end is connected to the top-layer grounding portion; one end of the second capacitor is connected to the second grounding portion, and the other end is connected to the top-layer grounding portion; The capacitance value of the first capacitor is different from the capacitance value of the second capacitor.

6. The driving circuit board according to claim 5, characterized in that: The capacitance value of the first capacitor is greater than the capacitance value of the second capacitor; Alternatively, the capacitance value of the second capacitor is greater than the capacitance value of the first capacitor.

7. The driving circuit board according to any one of claims 3 to 6, characterized in that: The driving circuit board also includes: a connector fixed on the circuit board body, and the connector cooperates with the top-layer grounding portion.

8. The driving circuit board according to any one of claims 1 to 6, characterized in that: In a case where the plurality of conductive layers include a plurality of ground conductive layers, the first ground portions in different ground conductive layers are connected to each other, and the second ground portions in different ground conductive layers are connected to each other.

9. The driving circuit board according to claim 8, characterized in that: The plurality of grounding conductive layers are arranged adjacent to each other in a direction perpendicular to the circuit board body.

10. The driving circuit board according to any one of claims 1 to 6, characterized in that: The plurality of conductive layers further include: a plurality of signal line layers located between the top conductive layer and the at least one ground conductive layer.

11. The driving circuit board according to any one of claims 1 to 6, characterized in that: The display driving component includes: a timing controller and a power management chip; the touch control component includes: a touch control chip.

12. A display module, characterized in that: include: A touch display panel, and a driving circuit board electrically connected to the touch display panel, wherein the driving circuit board is the driving circuit board according to any one of claims 1 to 11.

13. The display module according to claim 12, further comprising: A flexible circuit board is bound and connected to the touch display panel, and the driving circuit board is electrically connected to the touch display panel through the flexible circuit board.

Images