Display module

Abstract

The present invention discloses a display module; the display module comprises a first display screen, a second display screen, a circuit board assembly, a touch driving chip and a plurality of connection signal lines; the first display screen comprises a plurality of first touch signal lines; the second display screen is arranged at one side of the first display screen and comprises a plurality of second touch signal lines; the circuit board assembly is connected between the first display screen and the second display screen; the touch driving chip is arranged on the circuit board assembly; the plurality of connection signal lines are at least arranged on the circuit board assembly; wherein the plurality of first touch signal lines are electrically connected to the touch driving chip via the plurality of connection signal lines, and the plurality of second touch signal lines are electrically connected to the touch driving chip via the plurality of connection signal lines; the present invention can reduce the use of the touch driving chip, reduce the cost of the display module, save space in the display module, and is conducive to the thinness of the display module.

Description

Technical Field

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

[0002] With the development of folding screens, a sub-screen is often installed in the inward-folding display panel so that the sub-screen can be used for display functions after the display panel is folded inward.

[0003] At present, in order to realize the touch function of the secondary screen, it is often necessary to add an additional touch driver chip in the display panel to realize the touch function of the secondary screen, which increases the cost of the display panel and occupies the device layout space in the display panel. Summary of the invention

[0004] The embodiment of the present invention provides a display module, which can reduce the use of touch driving chips, reduce the cost of the display module, and save space in the display module.

[0005] An embodiment of the present invention provides a display module, comprising:

[0006] A first display screen includes a plurality of first touch signal lines;

[0007] A second display screen is disposed on one side of the first display screen and includes a plurality of second touch signal lines;

[0008] A circuit board assembly connected between the first display screen and the second display screen;

[0009] A touch control driver chip is arranged on the circuit board assembly;

[0010] A plurality of connection signal lines are at least arranged on the circuit board assembly;

[0011] The plurality of first touch signal lines are electrically connected to the touch driver chip via the plurality of connection signal lines, and the plurality of second touch signal lines are electrically connected to the touch driver chip via the plurality of connection signal lines.

[0012] In one embodiment of the present invention, the plurality of first touch signal lines include a plurality of first transmitting signal lines and a plurality of first receiving signal lines, the plurality of second touch signal lines include a plurality of second transmitting signal lines and a plurality of second receiving signal lines, and the plurality of connecting signal lines include a plurality of first connecting signal lines and a plurality of second connecting signal lines at least arranged on the circuit board assembly;

[0013] The first connecting signal line is connected between the first transmitting signal line and the second transmitting signal line, or the first connecting signal line is connected between the first transmitting signal line and the touch driving chip, or the first connecting signal line is connected between the second transmitting signal line and the touch driving chip;

[0014] The second connection signal line is connected between the first receiving signal line and the second receiving signal line, or the second connection signal line is connected between the first receiving signal line and the touch control driver chip, or the second connection signal line is connected between the second receiving signal line and the touch control driver chip.

[0015] In one embodiment of the present invention, the touch control driving chip includes a first signal terminal group and a second signal terminal group, the first signal terminal group includes a plurality of first signal terminals, and the second signal terminal group includes a plurality of second signal terminals;

[0016] The first transmitting signal line, the second transmitting signal line, and the first connecting signal line are all electrically connected to the first signal terminal, and the first receiving signal line, the second receiving signal line, and the second connecting signal line are all electrically connected to the second signal terminal.

[0017] In one embodiment of the present invention, a plurality of the first transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the first receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group;

[0018] A plurality of the second transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the second receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group.

[0019] In one embodiment of the present invention, the first connecting signal line is connected between the first transmitting signal line and the first signal terminal in the first signal terminal group, and is connected between the second transmitting signal line and the first signal terminal in the first signal terminal group;

[0020] The second connection signal line is connected between the first reception signal line and the second signal terminal in the second signal terminal group, and is connected between the second reception signal line and the second signal terminal in the second signal terminal group.

[0021] In an embodiment of the present invention, the display module further includes a first switch circuit and a second switch circuit, the input end of the first switch circuit is electrically connected to the touch driving chip, the output end of the first switch circuit is electrically connected to the first touch signal line, and the control end of the first switch circuit is connected to the first control signal;

[0022] An input end of the second switch circuit is electrically connected to the touch driving chip, an output end of the second switch circuit is electrically connected to the second touch signal line, and a control end of the second switch circuit is connected to a second control signal.

[0023] In one embodiment of the present invention, the first switch circuit is arranged on a side of the first display screen close to the circuit board assembly, and the second switch circuit is arranged on a side of the second display screen close to the circuit board assembly;

[0024] Alternatively, the first switch circuit and the second switch circuit are arranged in the touch control driving chip.

[0025] In one embodiment of the present invention, a portion of the first connecting signal line is connected between the first end of the first transmitting signal line and the first signal terminal in the first signal terminal group, and another portion of the first connecting signal line is connected between the second end of the first transmitting signal line and the second transmitting signal line;

[0026] A portion of the second connection signal line is connected between the third end of the first reception signal line and the second signal terminal in the second signal terminal group, and another portion of the second connection signal line is connected between the fourth end of the first reception signal line and the second reception signal line.

[0027] In one embodiment of the present invention, the touch control driver chip further includes a third signal terminal group and a fourth signal terminal group, the third signal terminal group includes a plurality of the first signal terminals, and the fourth signal terminal group includes a plurality of the second signal terminals;

[0028] Wherein, a plurality of the first transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the first receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group;

[0029] A plurality of the second transmitting signal lines are electrically connected to a plurality of the first signal terminals in the third signal terminal group, and a plurality of the second receiving signal lines are electrically connected to a plurality of the second signal terminals in the fourth signal terminal group.

[0030] In one embodiment of the present invention, the first connecting signal line is connected between the first transmitting signal line and the first signal terminal in the first signal terminal group, and is connected between the second transmitting signal line and the first signal terminal in the third signal terminal group;

[0031] The second connection signal line is connected between the first reception signal line and the second signal terminal in the second signal terminal group, and is connected between the second reception signal line and the second signal terminal in the fourth signal terminal group.

[0032] In an embodiment of the present invention, the display module applies a driving signal to the first touch signal line and does not apply a driving signal to the second touch signal line in a first time period;

[0033] The display module does not load a driving signal to the first touch signal line and loads a driving signal to the second touch signal line in a second time period.

[0034] In one embodiment of the present invention, the touch control driving chip further includes a third signal terminal group, and the third signal terminal group includes a plurality of the first signal terminals;

[0035] A plurality of the first transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the first receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group;

[0036] A plurality of the second transmitting signal lines are electrically connected to a plurality of the first signal terminals in the third signal terminal group, and a plurality of the second receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group.

[0037] In one embodiment of the present invention, the first connecting signal line is connected between the first transmitting signal line and the first signal terminal in the first signal terminal group, and is connected between the second transmitting signal line and the first signal terminal in the third signal terminal group;

[0038] A portion of the second connection signal line is connected between the third end of the first reception signal line and the second signal terminal in the second signal terminal group, and another portion of the second connection signal line is connected between the fourth end of the first reception signal line and the second reception signal line.

[0039] In one embodiment of the present invention, the touch control driving chip further includes a fourth signal terminal group, and the fourth signal terminal group includes a plurality of the second signal terminals;

[0040] Wherein, a plurality of the first transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the first receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group;

[0041] A plurality of the second transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the second receiving signal lines are electrically connected to a plurality of the second signal terminals in the fourth signal terminal group.

[0042] In one embodiment of the present invention, a portion of the first connecting signal line is connected between the first end of the first transmitting signal line and the first signal terminal in the first signal terminal group, and another portion of the first connecting signal line is connected between the second end of the first transmitting signal line and the second transmitting signal line;

[0043] The second connection signal line is connected between the first reception signal line and the second signal terminal in the second signal terminal group, and is connected between the second reception signal line and the second signal terminal in the fourth signal terminal group.

[0044] In one embodiment of the present invention, the touch control driving chip includes a plurality of first signal terminals and a plurality of second signal terminals;

[0045] The first transmitting signal line, the second transmitting signal line, the first connecting signal line, and the second receiving signal line are all electrically connected to the first signal terminal, the first receiving signal line is electrically connected to the second signal terminal, and the second connecting signal line is electrically connected to the first signal terminal and the second signal terminal;

[0046] Alternatively, the second transmitting signal line, the first receiving signal line, the second receiving signal line and the second connecting signal line are all electrically connected to the second signal terminal, the first transmitting signal line is electrically connected to the first signal terminal, and the first connecting signal line is electrically connected to the first signal terminal and the second signal terminal.

[0047] In one embodiment of the present invention, the first display screen includes a first display surface, the second display screen includes a second display surface, and the second display screen is arranged on a side of the first display screen away from the first display surface, and the second display surface is located on a side of the second display screen away from the first display screen.

[0048] In an embodiment of the present invention, the display module switches between a bent state and a flattened state. When the display module is in the bent state, the first display surface is located on the inner side of the bend, and the second display surface is located on the outer side of the bend.

[0049] In one embodiment of the present invention, the circuit board assembly includes a first flexible circuit board connected to the first display screen, a second flexible circuit board connected to the second display screen, and a main board connected between the first flexible circuit board and the second flexible circuit board, and the touch driving chip is arranged on the first flexible circuit board.

[0050] In one embodiment of the present invention, part of the first flexible circuit board is located on a side of the first display screen away from the first display surface, part of the second flexible circuit board is located on a side of the second display screen away from the second display surface, and the main board is located between the first display screen and the second display screen.

[0051] Beneficial effects of the present invention: The present invention connects the first display screen and the second display screen by setting a circuit board assembly, and sets a touch driver chip on the circuit board assembly to realize the touch function of the first display screen and the second display screen, thereby reducing the use of touch driver chips, reducing the cost of the display module, saving space in the display module, and facilitating the thinning of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0053] Figure 1 A schematic diagram of the structure of a display module provided by an embodiment of the present invention;

[0054] Figure 2 A schematic diagram of circuit distribution of a display module provided by an embodiment of the present invention;

[0055] Figure 3 A schematic diagram of a whole-machine connection structure of a display module provided in an embodiment of the present invention;

[0056] Figure 4 A schematic diagram of another whole-machine connection structure of a display module provided in an embodiment of the present invention;

[0057] Figure 5 Another schematic diagram of circuit distribution of a display module provided by an embodiment of the present invention;

[0058] Figure 6 Another schematic diagram of circuit distribution of a display module provided by an embodiment of the present invention;

[0059] Figure 7 A schematic diagram of the structure of a first switch circuit provided by an embodiment of the present invention;

[0060] Figure 8A schematic diagram of the structure of a second switch circuit provided by an embodiment of the present invention;

[0061] Fig. 9 Another structural schematic diagram of a display module provided by an embodiment of the present invention;

[0062] Fig.10 Another schematic diagram of circuit distribution of a display module provided by an embodiment of the present invention;

[0063] Fig.11 Another structural schematic diagram of a display module provided by an embodiment of the present invention;

[0064] Fig.12 Another schematic diagram of circuit distribution of a display module provided by an embodiment of the present invention;

[0065] Fig.13 Another structural schematic diagram of a display module provided by an embodiment of the present invention;

[0066] Fig.14 Another schematic diagram of circuit distribution of a display module provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0068] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0069] Please combine Figure 1 and Figure 2 An embodiment of the present invention provides a display module, which includes a first display screen 10, a second display screen 20, a circuit board assembly 30, a touch driving chip 40 and a plurality of connecting signal lines 300.

[0070] Among them, the first display screen 10 includes multiple first touch signal lines 11; the second display screen 20 is arranged on one side of the first display screen 10, and includes multiple second touch signal lines 21; the circuit board assembly 30 is connected between the first display screen 10 and the second display screen 20; the touch driving chip 40 is arranged on the circuit board assembly 30; and multiple connection signal lines 300 are at least arranged on the circuit board assembly 30.

[0071] Furthermore, the plurality of first touch signal lines 11 are electrically connected to the touch driving chip 40 through the plurality of connection signal lines 300 , and the plurality of second touch signal lines 21 are electrically connected to the touch driving chip 40 through the plurality of connection signal lines 300 .

[0072] During the implementation and application process, the embodiment of the present invention connects the first display screen 10 and the second display screen 20 by setting a circuit board assembly 30, and sets a touch driver chip 40 on the circuit board assembly 30 to realize the touch function of the first display screen 10 and the second display screen 20, thereby reducing the use of the touch driver chip 40, reducing the cost of the display module, saving space in the display module, and facilitating the thinness of the display module.

[0073] Specifically, please continue to combine Figure 1 and Figure 2 The display module provided in an embodiment of the present invention includes a first display screen 10 and a second display screen 20, the first display screen 10 includes a first display surface, the second display screen 20 includes a second display surface, wherein the second display screen 20 is arranged on one side of the first display screen 10; further, the second display screen 20 can be arranged on a side of the first display screen 10 away from the first display surface, and the second display surface is located on a side of the second display screen 20 away from the first display screen 10.

[0074] It should be noted that the display module provided in the embodiment of the present invention is a foldable display module, for example, it can be an inward folding display module, wherein the area of ​​the first display screen 10 is larger than the area of ​​the second display screen 20, specifically, the area of ​​the first display surface is larger than the area of ​​the second display surface; and then the first display screen 10 is the main screen, and the second display screen 20 is the auxiliary screen, and the display module switches between a bent state and an unfolded state. When the display module is in a bent state, that is, the first display screen 10 is folded so that the first display screen 10 is located on the inner side of the bend, and the second display screen 20 is located on the outer side of the bend, at this time, the first display screen 10 is folded inward and hidden, and the second display screen 20 can be used for display and touch; when the display module is in an unfolded state, the first display screen 10 is in an unfolded state, which can be used for display and touch, and the second display screen 20 is located on the side of the first display screen 10 away from the first display surface, and can be used for display and touch, or not.

[0075] Furthermore, the first display screen 10 includes a plurality of first touch signal lines 11 , and the second display screen 20 includes a plurality of second touch signal lines 21 .

[0076] The display module also includes a circuit board assembly 30 and a touch driver chip 40. The circuit board assembly 30 is connected between the first display screen 10 and the second display screen 20, and the touch driver chip 40 is arranged on the circuit board assembly 30; wherein, the number of the touch driver chip 40 is one, a plurality of first touch signal lines 11 are electrically connected to the touch driver chip 40, and a plurality of second touch signal lines 21 are electrically connected to the touch driver chip 40; that is, the embodiment of the present invention connects the first display screen 10 and the second display screen 20 through the circuit board assembly 30, and realizes the touch function of the first display screen 10 and the second display screen 20 at the same time through a touch driver chip 40, without the need for additional touch driver chips, thereby reducing the cost of the display module and saving space in the display module.

[0077] In one embodiment, the touch driver chip 40 is arranged on a side of the circuit board assembly 30 close to the first display screen 10. Since the area of ​​the first display screen 10 is larger than the area of ​​the second display screen 20, and the wiring space at the first display screen 10 is larger, the touch driver chip 40 can be arranged at a place with a larger wiring space in an embodiment of the present invention to facilitate the setting of the touch driver chip 40.

[0078] Furthermore, please combine Figure 1 , Figure 2 as well as Figure 3 The circuit board assembly 30 includes a first flexible circuit board 310 connected to the first display screen 10, a second flexible circuit board 320 connected to the second display screen 20, and a main board 330 connected between the first flexible circuit board 310 and the second flexible circuit board 320, and the touch driving chip 40 is arranged on the first flexible circuit board 310.

[0079] Among them, part of the first flexible circuit board 310 is located on the side of the first display screen 10 away from the first display surface, part of the second flexible circuit board 320 is located on the side of the second display screen 20 away from the second display surface, and the main board 330 is located between the first display screen 10 and the second display screen 20, that is, in the embodiment of the present invention, the main board 330 is arranged between the first display screen 10 and the second display screen 20, and the first flexible circuit board 310 and the second flexible circuit board 320 are respectively bent to the back side of the first display screen 10 and the back side of the second display screen 20 to connect with the main board 330 to realize signal transmission.

[0080] In one embodiment, please continue to combine Figure 1 , Figure 2 as well as Figure 3, the first flexible circuit board 310 and the second flexible circuit board 320 are not directly connected, and the touch driving chip 40 is connected to the touch driving chip 40 through Figure 3 The signal is transmitted along the path indicated by the arrow, that is, the first flexible circuit board 310 and the second flexible circuit board 320 can transmit the signal through the main board 330.

[0081] In another embodiment, please refer to Figure 1 , Figure 2 as well as Figure 4 , this embodiment and Figure 3 The difference of the embodiment shown is that the first flexible circuit board 310 and the second flexible circuit board 320 can be connected, for example, Figure 4 The touch control driver chip 40 is connected at A shown in FIG. Figure 4 The signal is transmitted along the path indicated by the arrow in the middle, and the signal can be transmitted between the first flexible circuit board 310 and the second flexible circuit board 320 through the connected point A.

[0082] The display module further includes a plurality of connection signal lines 300 at least disposed on the circuit board assembly 30 , and the connection signal lines 300 are used to connect the first touch signal line 11 , the second touch signal line 21 and the touch driving chip 40 .

[0083] In one embodiment, the connection signal line 300 may be located on the first flexible circuit board 310 , the second flexible circuit board 320 , and the main board 330 .

[0084] The plurality of connection signal lines 300 include a plurality of first connection signal lines 31 and a plurality of second connection signal lines 32 ; in addition, the plurality of first touch signal lines 11 include a plurality of first transmitting signal lines 111 and a plurality of first receiving signal lines 112 , and the plurality of second touch signal lines 21 include a plurality of second transmitting signal lines 211 and a plurality of second receiving signal lines 212 .

[0085] Among them, the first connection signal line 31 is connected between the first transmission signal line 111 and the second transmission signal line 211, or the first connection signal line 31 is connected between the first transmission signal line 111 and the touch driver chip 40, or the first connection signal line 31 is connected between the second transmission signal line 211 and the touch driver chip 40.

[0086] The second connection signal line 32 is connected between the first reception signal line 112 and the second reception signal line 212 , or between the first reception signal line 112 and the touch driver chip 40 , or between the second reception signal line 212 and the touch driver chip 40 .

[0087] Furthermore, the touch driver chip 40 includes a first signal terminal group 41 and a second signal terminal group 42, the first signal terminal group 41 includes multiple first signal terminals 410, and the second signal terminal group 42 includes multiple second signal terminals 420; wherein the first transmitting signal line 111, the second transmitting signal line 211, and the first connecting signal line 31 are all electrically connected to the first signal terminal 410, and the first receiving signal line 112, the second receiving signal line 212, and the second connecting signal line 32 are all electrically connected to the second signal terminal 420.

[0088] It should be noted that the embodiment of the present invention can realize independent control of the touch functions of the first display screen 10 and the second display screen 20, which may specifically include adding a switch circuit control or time-sharing drive control.

[0089] In one embodiment, the display module also includes a first switching circuit and a second switching circuit, the input end of the first switching circuit is electrically connected to the touch driving chip 40, the output end of the first switching circuit is electrically connected to the first touch signal line 11, and the control end of the first switching circuit is connected to the first control signal; the input end of the second switching circuit is electrically connected to the touch driving chip 40, the output end of the second switching circuit is electrically connected to the second touch signal line 21, and the control end of the second switching circuit is connected to the second control signal.

[0090] In one embodiment, the display module loads a driving signal on the first touch signal line 11 during a first time period, and does not load a driving signal on the second touch signal line 21; the display module does not load a driving signal on the first touch signal line 11 during a second time period, and loads a driving signal on the second touch signal line 21; it can be understood that the above-mentioned driving signal represents a signal loaded in the first touch signal line 11 that can realize the touch function of the first display screen 10, and a signal loaded in the second touch signal line 21 that can realize the touch function of the second display screen 20.

[0091] The connection method of the first touch signal line 11 and the second touch signal line 21 and the corresponding driving method in the implementation of the present invention are described below in conjunction with specific embodiments.

[0092] In one embodiment of the present invention, please continue to combine Figure 1 and Figure 2 The touch driving chip 40 further includes a third signal terminal group 43 and a fourth signal terminal group 44 . The third signal terminal group 43 includes a plurality of first signal terminals 410 , and the fourth signal terminal group 44 includes a plurality of second signal terminals 420 .

[0093] It can be understood that the multiple first signal terminals 410 in the first signal terminal group 41 and the multiple first signal terminals 410 in the third signal terminal group 43 are different first signal terminals 410, and the multiple second signal terminals 420 in the second signal terminal group 42 and the multiple second signal terminals 420 in the fourth signal terminal group 44 are different second signal terminals 420.

[0094] The plurality of first transmission signal lines 111 are electrically connected to the plurality of first signal terminals 410 in the first signal terminal group 41 , and the plurality of first reception signal lines 112 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0095] The plurality of second transmission signal lines 211 are electrically connected to the plurality of first signal terminals 410 in the third signal terminal group 43 , and the plurality of second reception signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the fourth signal terminal group 44 .

[0096] In one embodiment, since the area of ​​the first display screen 10 is larger than the area of ​​the second display screen 20, and thus the touch area of ​​the first display screen 10 is larger than the touch area of ​​the second display screen 20, the number of first transmitting signal lines 111 is larger than the number of second transmitting signal lines 211, and the number of first receiving signal lines 112 is larger than the number of second receiving signal lines 212.

[0097] In addition, the number of first signal terminals 410 in the first signal terminal group 41 is greater than or equal to the number of first transmitting signal lines 111, the number of second signal terminals 420 in the second signal terminal group 42 is greater than or equal to the number of first receiving signal lines 112, the number of first signal terminals 410 in the third signal terminal group 43 is greater than or equal to the number of second transmitting signal lines 211, and the number of second signal terminals 420 in the fourth signal terminal group 44 is greater than or equal to the number of second receiving signal lines 212.

[0098] Further, in the circuit connection mode on the circuit board assembly 30, the first connection signal line 31 is connected between the first transmission signal line 111 and the first signal terminal 410 in the first signal terminal group 41, and is connected between the second transmission signal line 211 and the first signal terminal 410 in the third signal terminal group 43. The second connection signal line 32 is connected between the first reception signal line 112 and the second signal terminal 420 in the second signal terminal group 42, and is connected between the second reception signal line 212 and the second signal terminal 420 in the fourth signal terminal group 44.

[0099] It should be noted that the connecting signal line 300 is not only located on the circuit board assembly 30, but can also extend to the first display screen 10 and the second display screen 20, and is located in the non-display area, while the first touch signal line 11 and the second touch signal line 21 are respectively located in the display areas of the first display screen 10 and the second display screen 20.

[0100] In this embodiment, the first display screen 10 and the second display screen 20 are respectively connected to different signal terminals in the touch driver chip 40, and are respectively connected through the first connection signal line 31 and the second connection signal line 32 to realize signal input. For example, the number of the plurality of first transmission signal lines 111 is 30, and the first signal terminals 410 connected are Tx1 to Tx30; the number of the plurality of first receiving signal lines 112 is 40, and the second signal terminals 420 connected are Rx1 to Rx40; the number of the plurality of second transmission signal lines 211 is 15, and the first signal terminals 410 connected are Tx31 to Tx45; the number of the plurality of second receiving signal lines 212 is 10, and the second signal terminals 420 connected are Rx41 to Rx50. It can be understood that the number of signal lines and the number of signal terminals exemplified in the embodiments of the present invention are for example only and are not limited thereto.

[0101] In one embodiment, a time-sharing driving method can be used to perform touch operations on the first display screen 10 and the second display screen 20. In a first time period, the display module loads a driving signal to the multiple first signal terminals 410 in the first signal terminal group 41, loads a driving signal to the multiple second signal terminals 420 in the second signal terminal group 42, does not load a driving signal to the multiple first signal terminals 410 in the third signal terminal group 43, and does not load a driving signal to the multiple second signal terminals 420 in the fourth signal terminal group 44.

[0102] During the second time period, the display module does not load driving signals to the multiple first signal terminals 410 in the first signal terminal group 41, does not load driving signals to the multiple second signal terminals 420 in the second signal terminal group 42, loads driving signals to the multiple first signal terminals 410 in the third signal terminal group 43, and loads driving signals to the multiple second signal terminals 420 in the fourth signal terminal group 44.

[0103] It can be understood that when the first display screen 10 performs a touch operation, only the first touch signal line 11 in the first display screen 10 is loaded with a driving signal; when the second display screen 20 performs a touch operation, only the second touch signal line 21 in the second display screen 20 is loaded with a driving signal; when both the first display screen 10 and the second display screen 20 perform a touch operation, the driving signal can be loaded on the first display screen 10 and the second display screen 20 in a sequence, for example, alternating between the first time period and the second time period.

[0104] As mentioned above, in this embodiment, the first display screen 10 and the second display screen 20 are connected together through the circuit board assembly 30, and the touch function of the first display screen 10 and the second display screen 20 is realized by a touch driver chip 40 arranged on the circuit board assembly 30. The first display screen 10 and the second display screen 20 are respectively connected to different signal terminals on the touch driver chip 40 for signal input, which can save cost and space.

[0105] In another embodiment of the present invention, please combine Figure 1 , Figure 5 , Figure 6 , Figure 7 as well as Figure 8 In this embodiment, the plurality of first transmitting signal lines 111 are electrically connected to the plurality of first signal terminals 410 in the first signal terminal group 41 , and the plurality of first receiving signal lines 112 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0106] The plurality of second transmission signal lines 211 are electrically connected to the plurality of first signal terminals 410 in the first signal terminal group 41 , and the plurality of second reception signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0107] Furthermore, in the circuit connection method on the circuit board assembly 30, the first connecting signal line 31 is connected between the first transmitting signal line 111 and the first signal terminal 410 in the first signal terminal group 41, and is connected between the second transmitting signal line 211 and the first signal terminal 410 in the first signal terminal group 41; the second connecting signal line 32 is connected between the first receiving signal line 112 and the second signal terminal 420 in the second signal terminal group 42, and is connected between the second receiving signal line 212 and the second signal terminal 420 in the second signal terminal group 42.

[0108] In this embodiment, the first display screen 10 and the second display screen 20 share part of the first signal terminals 410 and part of the second signal terminals 420 in the touch driver chip 40, and are respectively connected through the first connection signal line 31 and the second connection signal line 32 to realize signal input. For example, the number of the plurality of first transmission signal lines 111 is 30, and the first signal terminals 410 connected are Tx1 to Tx30; the number of the plurality of first receiving signal lines 112 is 40, and the second signal terminals 420 connected are Rx1 to Rx40; the number of the plurality of second transmission signal lines 211 is 15, and the first signal terminals 410 connected are Tx1 to Tx15; the number of the plurality of second receiving signal lines 212 is 10, and the second signal terminals 420 connected are Rx1 to Rx10. It can be understood that the number of signal lines and the number of signal terminals exemplified in the embodiments of the present invention are for example only and are not limited thereto.

[0109] The touch functions of the first display screen 10 and the second display screen 20 can be controlled respectively by adding a switch circuit in the display module; in one embodiment, the display module includes a first switch circuit 51 and a second switch circuit 52, the input end of the first switch circuit 51 is electrically connected to the touch driving chip 40, the output end of the first switch circuit 51 is electrically connected to the first transmitting signal line 111 and the first receiving signal line 112, and the control end of the first switch circuit 51 is connected to the first control signal V1; the input end of the second switch circuit 52 is electrically connected to the touch driving chip 40, the output end of the second switch circuit 52 is electrically connected to the second transmitting signal line 211 and the second receiving signal line 212, and the control end of the second switch circuit 52 is connected to the second control signal V2. Among them, the first switch circuit 51 can control the on and off of the touch signal in the first display screen 10, and the second switch circuit 52 can control the on and off of the touch signal in the second display screen 20.

[0110] In one embodiment, if Figure 6 As shown, the first switch circuit 51 is disposed on a side of the first display screen 10 close to the circuit board assembly 30 , and the second switch circuit 52 is disposed on a side of the second display screen 20 close to the circuit board assembly 30 .

[0111] Among them, Figure 7 and Figure 8As shown, the input end of the first switch circuit 51 can be connected to the first connection signal line 31 and the second connection signal line 32, the output end of the first switch circuit 51 can be connected to the first transmission signal line 111 and the first reception signal line 112, and the control end of the first switch circuit 51 can be connected to the first control signal V1; the input end of the second switch circuit 52 can be connected to the first connection signal line 31 and the second connection signal line 32, the output end of the second switch circuit 52 can be connected to the second transmission signal line 211 and the second reception signal line 212, and the control end of the second switch circuit 52 can be connected to the second control signal V2.

[0112] In another embodiment, the first switch circuit 51 and the second switch circuit 52 may also be disposed in the touch control driving chip 40 , which is not shown in the figure.

[0113] As mentioned above, in this embodiment, the first display screen 10 and the second display screen 20 are connected by the circuit board assembly 30, and the touch function of the first display screen 10 and the second display screen 20 is realized by a touch driver chip 40 arranged on the circuit board assembly 30. The first display screen 10 and the second display screen 20 input signals through part of the first signal terminals 410 and part of the second signal terminals 420 on the shared touch driver chip 40, which can save cost and space.

[0114] In another embodiment of the present invention, please combine Fig. 9 and Fig.10 In this embodiment, the touch driving chip 40 further includes a fourth signal terminal group 44 , and the fourth signal terminal group 44 includes a plurality of second signal terminals 420 .

[0115] It can be understood that the plurality of second signal terminals 420 in the second signal terminal group 42 and the plurality of second signal terminals 420 in the fourth signal terminal group 44 are different second signal terminals 420 .

[0116] The plurality of first transmission signal lines 111 are electrically connected to the plurality of first signal terminals 410 in the first signal terminal group 41 , and the plurality of first reception signal lines 112 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0117] The plurality of second transmission signal lines 211 are electrically connected to the plurality of first signal terminals 410 in the first signal terminal group 41 , and the plurality of second reception signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the fourth signal terminal group 44 .

[0118] Furthermore, in the circuit connection method on the circuit board assembly 30, a part of the first connection signal line 31 is connected between the first end of the first transmitting signal line 111 and the first signal terminal 410 in the first signal terminal group 41, and another part of the first connection signal line 31 is connected between the second end of the first transmitting signal line 111 and the second transmitting signal line 211; the second connection signal line 32 is connected between the first receiving signal line 112 and the second signal terminal 420 in the second signal terminal group 42, and between the second receiving signal line 212 and the second signal terminal 420 in the fourth signal terminal group 44.

[0119] In this embodiment, the first display screen 10 and the second display screen 20 share part of the first signal terminals 410 in the touch driver chip 40, and the first transmission signal line 111 and the second transmission signal line 211 are connected in series through the first connection signal line 31 to realize the input of the signal. For example, the number of the plurality of first transmission signal lines 111 is 30, and the first signal terminals 410 connected are Tx1 to Tx30; the number of the plurality of first receiving signal lines 112 is 40, and the second signal terminals 420 connected are Rx1 to Rx40; the number of the plurality of second transmission signal lines 211 is 15, and the first signal terminals 410 connected are Tx1 to Tx15; the number of the plurality of second receiving signal lines 212 is 10, and the second signal terminals 420 connected are Rx41 to Rx50. It can be understood that the number of signal lines and the number of signal terminals exemplified in the embodiments of the present invention are for example only and are not limited thereto.

[0120] As mentioned above, in this embodiment, the first display screen 10 and the second display screen 20 are connected together through the circuit board assembly 30, and the touch function of the first display screen 10 and the second display screen 20 is realized by a touch driver chip 40 arranged on the circuit board assembly 30. The first display screen 10 and the second display screen 20 share part of the first signal terminals 410 in the touch driver chip 40, and the first transmitting signal line 111 and the second transmitting signal line 211 are connected in series through the first connecting signal line 31 for signal input, which can save cost and space.

[0121] In another embodiment of the present invention, please combine Fig.11 and Fig.12 In this embodiment, the touch driving chip 40 further includes a third signal terminal group 43 , and the third signal terminal group 43 includes a plurality of first signal terminals 410 .

[0122] It can be understood that the plurality of first signal terminals 410 in the first signal terminal group 41 and the plurality of first signal terminals 410 in the third signal terminal group 43 are different first signal terminals 410 .

[0123] The plurality of first transmission signal lines 111 are electrically connected to the plurality of first signal terminals 410 in the first signal terminal group 41 , and the plurality of first reception signal lines 112 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0124] The plurality of second transmission signal lines 211 are electrically connected to the plurality of first signal terminals 410 in the third signal terminal group 43 , and the plurality of second reception signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0125] Furthermore, in the circuit connection method on the circuit board assembly 30, the first connection signal line 31 is connected between the first transmitting signal line 111 and the first signal terminal 410 in the first signal terminal group 41, and is connected between the second transmitting signal line 211 and the first signal terminal 410 in the third signal terminal group 43; a portion of the second connection signal line 32 is connected between the third end of the first receiving signal line 112 and the second signal terminal 420 in the second signal terminal group 42, and another portion of the second connection signal line 32 is connected between the fourth end of the first receiving signal line 112 and the second receiving signal line 212.

[0126] In this embodiment, the first display screen 10 and the second display screen 20 share part of the second signal terminals 420 in the touch driver chip 40, and the first receiving signal line 112 and the second receiving signal line 212 are connected in series through the second connecting signal line 32 to realize the input of the signal. For example, the number of the plurality of first transmitting signal lines 111 is 30, and the connected first signal terminals 410 are Tx1 to Tx30; the number of the plurality of first receiving signal lines 112 is 40, and the connected second signal terminals 420 are Rx1 to Rx40; the number of the plurality of second transmitting signal lines 211 is 15, and the connected first signal terminals 410 are Tx31 to Tx45; the number of the plurality of second receiving signal lines 212 is 10, and the connected second signal terminals 420 are Rx1 to Rx10. It can be understood that the number of signal lines and the number of signal terminals exemplified in the embodiments of the present invention are for example only and are not limited thereto.

[0127] As mentioned above, in this embodiment, the first display screen 10 and the second display screen 20 are connected together through the circuit board assembly 30, and the touch function of the first display screen 10 and the second display screen 20 is realized by a touch driver chip 40 arranged on the circuit board assembly 30. The first display screen 10 and the second display screen 20 share part of the second signal terminals 420 in the touch driver chip 40, and the first receiving signal line 112 and the second receiving signal line 212 are connected in series through the second connecting signal line 32 for signal input, which can save cost and space.

[0128] In another embodiment of the present invention, please combine Fig.13 and Fig.14 In this embodiment, the plurality of first transmitting signal lines 111 are electrically connected to the plurality of first signal terminals 410 in the first signal terminal group 41 , and the plurality of first receiving signal lines 112 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0129] The plurality of second transmission signal lines 211 are electrically connected to the plurality of first signal terminals 410 in the first signal terminal group 41 , and the plurality of second reception signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0130] Furthermore, in the circuit connection method on the circuit board assembly 30, a portion of the first connection signal line 31 is connected between the first end of the first transmitting signal line 111 and the first signal terminal 410 in the first signal terminal group 41, and another portion of the first connection signal line 31 is connected between the second end of the first transmitting signal line 111 and the second transmitting signal line 211; a portion of the second connection signal line 32 is connected between the third end of the first receiving signal line 112 and the second signal terminal 420 in the second signal terminal group 42, and another portion of the second connection signal line 32 is connected between the fourth end of the first receiving signal line 112 and the second receiving signal line 212.

[0131] In this embodiment, the first display screen 10 and the second display screen 20 share part of the first signal terminals 410 and part of the second signal terminals 420 in the touch driving chip 40, and the first transmitting signal line 111 and the second transmitting signal line 211 are connected in series through the first connecting signal line 31, and the first receiving signal line 112 and the second receiving signal line 212 are connected in series through the second connecting signal line 32 to realize signal input. For example, the number of the plurality of first transmitting signal lines 111 is 30, and the first signal terminals 410 connected thereto are Tx1 to Tx30; the number of the plurality of first receiving signal lines 112 is 40, and the second signal terminals 420 connected thereto are Rx1 to Rx40; the number of the plurality of second transmitting signal lines 211 is 15, and the first signal terminals 410 connected thereto are Tx1 to Tx15; the number of the plurality of second receiving signal lines 212 is 10, and the second signal terminals 420 connected thereto are Rx1 to Rx10. It can be understood that the number of signal lines and the number of signal terminals listed in the embodiments of the present invention are examples and are not limited thereto.

[0132] As mentioned above, in this embodiment, the first display screen 10 and the second display screen 20 are connected together through the circuit board assembly 30, and the touch function of the first display screen 10 and the second display screen 20 is realized by a touch driver chip 40 arranged on the circuit board assembly 30. The first display screen 10 and the second display screen 20 share part of the first signal terminals 410 and part of the second signal terminals 420 in the touch driver chip 40, and the first transmitting signal line 111 and the second transmitting signal line 211 are connected in series through the first connecting signal line 31, and the first receiving signal line 112 and the second receiving signal line 212 are connected in series through the second connecting signal line 32 for signal input, which can save cost and space.

[0133] It should be noted that in other embodiments of the present invention, for the multiple first signal terminals 410 and the multiple second signal terminals 420 in the touch driver chip 40, the first transmitting signal line 111, the second transmitting signal line 211, the first connecting signal line 31, and the second receiving signal line 212 are all electrically connected to the first signal terminal 410, the first receiving signal line 112 is electrically connected to the second signal terminal 420, and the second connecting signal line 32 is electrically connected to the first signal terminal 410 and the second signal terminal 420; that is, the second receiving signal line 212 can be connected to the multiple first signal terminals 410 together with the first transmitting signal line 111 and the second transmitting signal line 211.

[0134] The second receiving signal line 212 and the second transmitting signal line 211 can be connected to different first signal terminals 410, or can be connected in parallel to the same first signal terminal 410. When the second receiving signal line 212 and the second transmitting signal line 211 are connected in parallel to the same first signal terminal 410, the driving method can be adjusted, for example, by using a time-sharing driving method, so that the same first signal terminal 410 drives the second receiving signal line 212 and the second transmitting signal line 211 respectively.

[0135] The second receiving signal line 212 and the first transmitting signal line 111 can be connected to different first signal terminals 410, or can be connected in parallel to the same first signal terminal 410. When the second receiving signal line 212 and the first transmitting signal line 111 are connected in parallel to the same first signal terminal 410, the driving method can be adjusted, for example, by using a time-sharing driving method, so that the same first signal terminal 410 drives the second receiving signal line 212 and the first transmitting signal line 111 respectively.

[0136] When the second receiving signal line 212 is connected in parallel with the first transmitting signal line 111 and the second transmitting signal line 211 to the same first signal terminal 410, the driving method can be adjusted, for example, by using a time-sharing driving method, so that the same first signal terminal 410 drives the second receiving signal line 212, the first transmitting signal line 111 and the second transmitting signal line 211 respectively.

[0137] In other embodiments of the present invention, the second transmitting signal line 211, the first receiving signal line 112, the second receiving signal line 212 and the second connecting signal line 32 are all electrically connected to the second signal terminal 420, the first transmitting signal line 111 is electrically connected to the first signal terminal 410, and the first connecting signal line 31 is electrically connected to the first signal terminal 410 and the second signal terminal 420; that is, the second transmitting signal line 211 can be connected to multiple second signal terminals 420 together with the first receiving signal line 112 and the second receiving signal line 212.

[0138] The second transmit signal line 211 and the second receive signal line 212 can be connected to different second signal terminals 420, or can be connected in parallel to the same second signal terminal 420. When the second transmit signal line 211 and the second receive signal line 212 are connected in parallel to the same second signal terminal 420, the driving method can be adjusted, for example, by using a time-sharing driving method, so that the same second signal terminal 420 drives the second transmit signal line 211 and the second receive signal line 212 respectively.

[0139] The second transmit signal line 211 and the first receive signal line 112 can be connected to different second signal terminals 420, or can be connected in parallel to the second signal terminal 420. When the second transmit signal line 211 and the first receive signal line 112 are connected in parallel to the same second signal terminal 420, the driving method can be adjusted, for example, by using a time-sharing driving method, so that the same second signal terminal 420 drives the second transmit signal line 211 and the first receive signal line 112 respectively.

[0140] When the second transmit signal line 211 is connected in parallel with the first receive signal line 112 and the second receive signal line 212 to the same second signal terminal 420, the driving method can be adjusted, for example, by using a time-sharing driving method, so that the same second signal terminal 420 drives the second transmit signal line 211, the first receive signal line 112 and the second receive signal line 212 respectively.

[0141] In addition, an embodiment of the present invention further provides a display device, which includes the display module described in the above embodiment.

[0142] In one embodiment, the display device includes display devices such as a mobile phone, a computer, a tablet, and a watch.

[0143] It can be understood that, since the display device includes the display panel described in the above embodiment, the display device has the same beneficial effects as the display panel described in the above embodiment, which will not be described in detail herein.

[0144] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0145] A display module provided by an embodiment of the present invention is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display module, characterized in that: include: A first display screen includes a plurality of first touch signal lines; A second display screen is disposed on one side of the first display screen and includes a plurality of second touch signal lines; A circuit board assembly connected between the first display screen and the second display screen; A touch control driver chip is arranged on the circuit board assembly; A plurality of connection signal lines are at least arranged on the circuit board assembly; Wherein, a plurality of the first touch signal lines are electrically connected to the touch driving chip through a plurality of the connecting signal lines, a plurality of the second touch signal lines are electrically connected to the touch driving chip through a plurality of the connecting signal lines, a plurality of the first touch signal lines include a plurality of first transmitting signal lines and a plurality of first receiving signal lines, a plurality of the second touch signal lines include a plurality of second transmitting signal lines and a plurality of second receiving signal lines, a plurality of the connecting signal lines include a plurality of first connecting signal lines and a plurality of second connecting signal lines at least arranged on the circuit board assembly, the touch driving chip includes a first signal terminal group and a second signal terminal group, the first signal terminal group includes a plurality of first signal terminals, and the second signal terminal group includes a plurality of second signal terminals; The first transmission signal line and the second transmission signal line are connected in series via the first connection signal line, a portion of the first connection signal line is connected between the first end of the first transmission signal line and the first signal terminal in the first signal terminal group, and another portion of the first connection signal line is connected between the second end of the first transmission signal line and the second transmission signal line; And / or, the first receiving signal line and the second receiving signal line are connected in series via the second connecting signal line, a portion of the second connecting signal line is connected between the third end of the first receiving signal line and the second signal terminal in the second signal terminal group, and another portion of the second connecting signal line is connected between the fourth end of the first receiving signal line and the second receiving signal line.

2. The display module according to claim 1, characterized in that: The first transmitting signal line, the second transmitting signal line, and the first connecting signal line are all electrically connected to the first signal terminal, and the first receiving signal line, the second receiving signal line, and the second connecting signal line are all electrically connected to the second signal terminal.

3. The display module according to claim 1, characterized in that: A plurality of the first transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the first receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group; A plurality of the second transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the second receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group.

4. The display module according to claim 3, characterized in that: The first connection signal line is connected between the first transmission signal line and the first signal terminal in the first signal terminal group, and is connected between the second transmission signal line and the first signal terminal in the first signal terminal group; The second connection signal line is connected between the first reception signal line and the second signal terminal in the second signal terminal group, and is connected between the second reception signal line and the second signal terminal in the second signal terminal group.

5. The display module according to claim 1 or 4, characterized in that: The display module further includes a first switch circuit and a second switch circuit, wherein an input end of the first switch circuit is electrically connected to the touch driving chip, an output end of the first switch circuit is electrically connected to the first touch signal line, and a control end of the first switch circuit is connected to a first control signal; An input end of the second switch circuit is electrically connected to the touch driving chip, an output end of the second switch circuit is electrically connected to the second touch signal line, and a control end of the second switch circuit is connected to a second control signal.

6. The display module according to claim 5, characterized in that: The first switch circuit is arranged on a side of the first display screen close to the circuit board assembly, and the second switch circuit is arranged on a side of the second display screen close to the circuit board assembly; Alternatively, the first switch circuit and the second switch circuit are arranged in the touch control driving chip.

7. The display module according to claim 1, characterized in that: The display module applies a driving signal to the first touch signal line and does not apply a driving signal to the second touch signal line in a first time period; The display module does not load a driving signal to the first touch signal line and loads a driving signal to the second touch signal line in a second time period.

8. The display module according to claim 1, characterized in that: The touch control driving chip further includes a third signal terminal group, and the third signal terminal group includes a plurality of the first signal terminals; A plurality of the first transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the first receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group; A plurality of the second transmitting signal lines are electrically connected to a plurality of the first signal terminals in the third signal terminal group, and a plurality of the second receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group.

9. The display module according to claim 8, characterized in that: The first connection signal line is connected between the first transmission signal line and the first signal terminal in the first signal terminal group, and is connected between the second transmission signal line and the first signal terminal in the third signal terminal group; A portion of the second connection signal line is connected between the third end of the first reception signal line and the second signal terminal in the second signal terminal group, and another portion of the second connection signal line is connected between the fourth end of the first reception signal line and the second reception signal line.

10. The display module according to claim 1, characterized in that: The touch control driving chip further includes a fourth signal terminal group, and the fourth signal terminal group includes a plurality of the second signal terminals; Wherein, a plurality of the first transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the first receiving signal lines are electrically connected to a plurality of the second signal terminals in the second signal terminal group; A plurality of the second transmitting signal lines are electrically connected to a plurality of the first signal terminals in the first signal terminal group, and a plurality of the second receiving signal lines are electrically connected to a plurality of the second signal terminals in the fourth signal terminal group.

11. The display module according to claim 10, characterized in that: A portion of the first connecting signal line is connected between the first end of the first transmitting signal line and the first signal terminal in the first signal terminal group, and another portion of the first connecting signal line is connected between the second end of the first transmitting signal line and the second transmitting signal line; The second connection signal line is connected between the first reception signal line and the second signal terminal in the second signal terminal group, and is connected between the second reception signal line and the second signal terminal in the fourth signal terminal group.

12. The display module according to claim 1, characterized in that: The touch control driving chip includes a plurality of first signal terminals and a plurality of second signal terminals; The first transmitting signal line, the second transmitting signal line, the first connecting signal line, and the second receiving signal line are all electrically connected to the first signal terminal, the first receiving signal line is electrically connected to the second signal terminal, and the second connecting signal line is electrically connected to the first signal terminal and the second signal terminal; Alternatively, the second transmitting signal line, the first receiving signal line, the second receiving signal line and the second connecting signal line are all electrically connected to the second signal terminal, the first transmitting signal line is electrically connected to the first signal terminal, and the first connecting signal line is electrically connected to the first signal terminal and the second signal terminal.

13. The display module according to claim 1, characterized in that: The first display screen includes a first display surface, the second display screen includes a second display surface, and the second display screen is arranged on a side of the first display screen away from the first display surface, and the second display surface is located on a side of the second display screen away from the first display screen.

14. The display module according to claim 13, characterized in that: The display module switches between a bent state and a flattened state. When the display module is in the bent state, the first display surface is located on the inner side of the bend, and the second display surface is located on the outer side of the bend.

15. The display module according to claim 13, characterized in that: The circuit board assembly includes a first flexible circuit board connected to the first display screen, a second flexible circuit board connected to the second display screen, and a main board connected between the first flexible circuit board and the second flexible circuit board, and the touch driving chip is arranged on the first flexible circuit board.

16. The display module according to claim 15, characterized in that: Part of the first flexible circuit board is located on a side of the first display screen away from the first display surface, part of the second flexible circuit board is located on a side of the second display screen away from the second display surface, and the main board is located between the first display screen and the second display screen.

Images