Display module

Abstract

The present application discloses a display module. A first display screen comprises a plurality of first touch signal lines; a second display screen comprises a plurality of second touch signal lines; a circuit board assembly is connected between the first display screen and the second display screen; a touch driving chip is arranged on the circuit board assembly; a plurality of connecting signal lines are at least arranged on the circuit board assembly; and the plurality of first touch signal lines and the plurality of second touch signal lines are electrically connected to the touch driving chip by means of the plurality of connecting signal lines.

Description

Display module Technical Field

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

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

[0003] Currently, in order to realize the touch function of the secondary screen, it is often necessary to add an additional touch driver chip to the display panel to realize the touch function of the secondary screen, thereby increasing the cost of the display panel and occupying the device layout space within the display panel. SUMMARY OF THE INVENTION

[0004] The embodiments of the present application provide a display module that can reduce the use of touch driver chips, lower the cost of the display module, and save space within the display module.

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

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

[0007] a second display screen, disposed on one side of the first display screen and comprising 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 driver chip is provided on the circuit board assembly;

[0010] a plurality of connecting signal lines, at least provided on the circuit board assembly;

[0011] The plurality of first touch signal lines are electrically connected to the touch driver chip through the plurality of connection signal lines, and the plurality of second touch signal lines are electrically connected to the touch driver chip through the plurality of connection signal lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG1 is a schematic structural diagram of a display module provided in an embodiment of the present application;

[0013] FIG2 is a schematic diagram of a circuit distribution of a display module provided in an embodiment of the present application;

[0014] FIG3 is a schematic diagram of a whole-machine connection structure of a display module provided in an embodiment of the present application;

[0015] FIG4 is a schematic diagram of another overall connection structure of a display module provided in an embodiment of the present application;

[0016] FIG5 is another schematic diagram of circuit distribution of a display module provided in an embodiment of the present application;

[0017] FIG6 is a schematic diagram of another circuit distribution of a display module provided in an embodiment of the present application;

[0018] FIG7 is a schematic structural diagram of a first switching circuit provided in an embodiment of the present application;

[0019] FIG8 is a schematic structural diagram of a second switching circuit provided in an embodiment of the present application;

[0020] FIG9 is another schematic structural diagram of a display module provided in an embodiment of the present application;

[0021] FIG10 is a schematic diagram of another circuit distribution of a display module provided in an embodiment of the present application;

[0022] FIG11 is another structural schematic diagram of a display module provided in an embodiment of the present application;

[0023] FIG12 is a schematic diagram of another circuit distribution of a display module provided in an embodiment of the present application;

[0024] FIG13 is another schematic structural diagram of a display module provided in an embodiment of the present application;

[0025] FIG. 14 is another schematic diagram of circuit distribution of a display module provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0028] 1 and 2 , an embodiment of the present application provides a display module, which includes a first display screen 10 , a second display screen 20 , a circuit board assembly 30 , a touch driver chip 40 , and a plurality of connection signal lines 300 .

[0029] 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 driver 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.

[0030] Furthermore, the plurality of first touch signal lines 11 are electrically connected to the touch driver 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 driver chip 40 through the plurality of connection signal lines 300 .

[0031] During the implementation process, the embodiment of the present application 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 thinning of the display module.

[0032] In one embodiment of the present application, 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 provided at least on the circuit board assembly;

[0033] 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 driver chip, or the first connecting signal line is connected between the second transmitting signal line and the touch driver chip;

[0034] 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 driver chip, or the second connection signal line is connected between the second receiving signal line and the touch driver chip.

[0035] In one embodiment of the present application, the touch driver 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;

[0036] 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.

[0037] In one embodiment of the present application, a plurality of first transmitting signal lines are electrically connected to a plurality of first signal terminals in the first signal terminal group, and a plurality of first receiving signal lines are electrically connected to a plurality of second signal terminals in the second signal terminal group;

[0038] A plurality of second transmitting signal lines are electrically connected to a plurality of first signal terminals in the first signal terminal group, and a plurality of second receiving signal lines are electrically connected to a plurality of second signal terminals in the second signal terminal group.

[0039] In one embodiment of the present application, 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;

[0040] 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.

[0041] In one embodiment of the present application, 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 driver 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;

[0042] 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.

[0043] In one embodiment of the present application, the first switch circuit is provided on a side of the first display screen close to the circuit board assembly, and the second switch circuit is provided on a side of the second display screen close to the circuit board assembly;

[0044] Alternatively, the first switch circuit and the second switch circuit are provided in the touch driver chip.

[0045] In one embodiment of the present application, 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;

[0046] 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.

[0047] In one embodiment of the present application, the touch 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;

[0048] 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;

[0049] 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.

[0050] In one embodiment of the present application, 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;

[0051] 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.

[0052] In one embodiment of the present application, 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 during a first time period.

[0053] 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.

[0054] In one embodiment of the present application, the touch driver chip further includes a third signal terminal group, and the third signal terminal group includes a plurality of the first signal terminals;

[0055] A plurality of first transmitting signal lines are electrically connected to a plurality of first signal terminals in the first signal terminal group, and a plurality of first receiving signal lines are electrically connected to a plurality of second signal terminals in the second signal terminal group;

[0056] 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.

[0057] In one embodiment of the present application, 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;

[0058] 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.

[0059] In one embodiment of the present application, the touch driver chip further includes a fourth signal terminal group, and the fourth signal terminal group includes a plurality of the second signal terminals;

[0060] 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;

[0061] A plurality of second transmitting signal lines are electrically connected to a plurality of first signal terminals in the first signal terminal group, and a plurality of second receiving signal lines are electrically connected to a plurality of second signal terminals in the fourth signal terminal group.

[0062] In one embodiment of the present application, 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;

[0063] 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.

[0064] In one embodiment of the present application, the touch driver chip includes a plurality of first signal terminals and a plurality of second signal terminals;

[0065] 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;

[0066] 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.

[0067] In one embodiment of the present application, 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.

[0068] In one embodiment of the present application, 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.

[0069] In one embodiment of the present application, 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 driver chip is arranged on the first flexible circuit board.

[0070] In one embodiment of the present application, 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.

[0071] Specifically, please continue to combine Figures 1 and 2. The display module provided in the embodiment of the present application includes a first display screen 10 and a second display screen 20. The first display screen 10 includes a first display surface, and 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 the side of the second display screen 20 away from the first display screen 10.

[0072] It should be noted that the display module provided in the embodiment of the present application 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; 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 a flattened 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 a flattened state, the first display screen 10 is in an unfolded state and can be used for display and touch, while 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.

[0073] 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 .

[0074] 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. Among them, the number of touch driver chips 40 is one, and multiple first touch signal lines 11 are electrically connected to the touch driver chip 40, and multiple second touch signal lines 21 are electrically connected to the touch driver chip 40. That is, the embodiment of the present application connects the first display screen 10 and the second display screen 20 through the circuit board assembly 30, and simultaneously realizes the touch function of the first display screen 10 and the second display screen 20 through a touch driver chip 40, without the need for additional touch driver chips, reducing the cost of the display module and saving space within the display module.

[0075] 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 larger wiring space in the embodiment of the present application to facilitate the arrangement of the touch driver chip 40.

[0076] Further, please refer to Figures 1, 2 and 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. The touch driver chip 40 is arranged on the first flexible circuit board 310.

[0077] 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 application, the main board 330 is set 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.

[0078] In one embodiment, referring to Figures 1, 2, and 3, the first flexible circuit board 310 and the second flexible circuit board 320 are not directly connected, and the touch driver chip 40 transmits signals through the path indicated by the arrow in Figure 3, that is, signals can be transmitted between the first flexible circuit board 310 and the second flexible circuit board 320 through the main board 330.

[0079] In another embodiment, referring to Figures 1, 2 and 4, the difference between this embodiment and the embodiment shown in Figure 3 is that: the first flexible circuit board 310 and the second flexible circuit board 320 can be connected, for example, they can be connected at A shown in Figure 4, and then the touch driver chip 40 transmits signals through the path shown by the arrow in Figure 4, and the first flexible circuit board 310 and the second flexible circuit board 320 can transmit signals through the connected A.

[0080] 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 driver chip 40 .

[0081] 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 .

[0082] 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 .

[0083] 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.

[0084] 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 .

[0085] 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.

[0086] It should be noted that the embodiment of the present application 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 switch circuit control or time-sharing drive control.

[0087] 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 driver 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 driver 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.

[0088] In one embodiment, the display module loads a driving signal to the first touch signal line 11 during a first time period, and does not load a driving signal to the second touch signal line 21; the display module does not load a driving signal to the first touch signal line 11 during a second time period, and loads a driving signal to 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 to realize the touch function of the first display screen 10, and a signal loaded in the second touch signal line 21 to realize the touch function of the second display screen 20.

[0089] The following describes 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 application in conjunction with specific embodiments.

[0090] In one embodiment of the present application, please continue to combine Figures 1 and 2, the touch driver chip 40 also includes a third signal terminal group 43 and a fourth signal terminal group 44, the third signal terminal group 43 includes multiple first signal terminals 410, and the fourth signal terminal group 44 includes multiple second signal terminals 420.

[0091] 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.

[0092] 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 .

[0093] The plurality of second transmitting 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 receiving signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the fourth signal terminal group 44 .

[0094] 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.

[0095] 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.

[0096] Furthermore, in the circuit connection mode 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 third signal terminal group 43. 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 fourth signal terminal group 44.

[0097] 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 area of ​​the first display screen 10 and the second display screen 20.

[0098] 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 connected via first connection signal lines 31 and second connection signal lines 32 to implement signal input. For example, the number of the plurality of first transmission signal lines 111 is 30, and the first signal terminals 410 connected thereto are Tx1 to Tx30; the number of the plurality of first reception signal lines 112 is 40, and the second signal terminals 420 connected thereto are Rx1 to Rx40; the number of the plurality of second transmission signal lines 211 is 15, and the first signal terminals 410 connected thereto are Tx31 to Tx45; and the number of the plurality of second reception signal lines 212 is 10, and the second signal terminals 420 connected thereto are Rx41 to Rx50. It will be understood that the number of signal lines and signal terminals illustrated in the embodiments of the present application is for illustrative purposes only and is not intended to be limiting.

[0099] 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. During 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.

[0100] 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.

[0101] 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.

[0102] Continuing from the above, in this embodiment, the first display screen 10 and the second display screen 20 are connected 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.

[0103] In another embodiment of the present application, please refer to Figures 1, 5, 6, 7 and 8. In this embodiment, multiple first transmitting signal lines 111 are electrically connected to multiple first signal terminals 410 in the first signal terminal group 41, and multiple first receiving signal lines 112 are electrically connected to multiple second signal terminals 420 in the second signal terminal group 42.

[0104] The plurality of second transmit 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 receive signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0105] 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.

[0106] In this embodiment, the first display screen 10 and the second display screen 20 share some of the first signal terminals 410 and some of the second signal terminals 420 in the touch driver chip 40, and are connected via the first connection signal lines 31 and the second connection signal lines 32, respectively, to implement signal input. For example, the number of the plurality of first transmission signal lines 111 is 30, and the first signal terminals 410 connected thereto are Tx1 to Tx30; the number of the plurality of first reception signal lines 112 is 40, and the second signal terminals 420 connected thereto are Rx1 to Rx40; the number of the plurality of second transmission signal lines 211 is 15, and the first signal terminals 410 connected thereto are Tx1 to Tx15; the number of the plurality of second reception signal lines 212 is 10, and the second signal terminals 420 connected thereto are Rx1 to Rx10. It will be understood that the number of signal lines and signal terminals illustrated in the embodiments of the present application is for illustrative purposes only and is not intended to be limiting.

[0107] The touch functions of the first display screen 10 and the second display screen 20 can be controlled separately by adding a switch circuit to 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 driver chip 40, the output end of the first switch circuit 51 is electrically connected to the first transmit signal line 111 and the first receive 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 driver chip 40, the output end of the second switch circuit 52 is electrically connected to the second transmit signal line 211 and the second receive signal line 212, and the control end of the second switch circuit 52 is connected to the second control signal V2. The first switch circuit 51 can control the touch signal on and off in the first display screen 10, and the second switch circuit 52 can control the touch signal on and off in the second display screen 20.

[0108] In one embodiment, as shown in FIG. 6 , 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 .

[0109] 7 and 8 , 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.

[0110] In another embodiment, the first switch circuit 51 and the second switch circuit 52 may also be provided in the touch driver chip 40 , which is not shown in the figure.

[0111] Continuing from the above, in this embodiment, the first display screen 10 and the second display screen 20 are connected 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 provided 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.

[0112] In another embodiment of the present application, referring to FIG. 9 and FIG. 10 , in this embodiment, the touch driver 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 .

[0113] 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 .

[0114] 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 .

[0115] The plurality of second transmit 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 receive signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the fourth signal terminal group 44 .

[0116] 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; 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.

[0117] In this embodiment, the first display screen 10 and the second display screen 20 share some of the first signal terminals 410 in the touch driver chip 40, and the first transmit signal lines 111 and the second transmit signal lines 211 are connected in series via the first connection signal line 31 to enable signal input. For example, the number of the plurality of first transmit signal lines 111 is 30, and the first signal terminals 410 connected thereto are Tx1 to Tx30; the number of the plurality of first receive signal lines 112 is 40, and the second signal terminals 420 connected thereto are Rx1 to Rx40; the number of the plurality of second transmit signal lines 211 is 15, and the first signal terminals 410 connected thereto are Tx1 to Tx15; and the number of the plurality of second receive signal lines 212 is 10, and the second signal terminals 420 connected thereto are Rx41 to Rx50. It will be understood that the number of signal lines and signal terminals illustrated in the embodiments of the present application is for illustrative purposes only and is not intended to be limiting.

[0118] Continuing from the above, in this embodiment, the first display screen 10 and the second display screen 20 are connected 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.

[0119] In another embodiment of the present application, referring to FIG. 11 and FIG. 12 , in this embodiment, the touch driver 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 .

[0120] 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 .

[0121] 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 .

[0122] The plurality of second transmitting 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 receiving signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0123] 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 third signal terminal group 43; a part of the second connecting 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 part of the second connecting signal line 32 is connected between the fourth end of the first receiving signal line 112 and the second receiving signal line 212.

[0124] In this embodiment, the first display screen 10 and the second display screen 20 share some of the second signal terminals 420 in the touch driver chip 40, and the first receiving signal lines 112 and the second receiving signal lines 212 are connected in series via the second connecting signal lines 32 to enable 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 Tx31 to Tx45; and 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 will be understood that the number of signal lines and signal terminals illustrated in the embodiments of the present application is for illustrative purposes only and is not intended to be limiting.

[0125] Continuing from the above, in this embodiment, the first display screen 10 and the second display screen 20 are connected 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.

[0126] In another embodiment of the present application, please refer to Figures 13 and 14. In this embodiment, multiple first transmitting signal lines 111 are electrically connected to multiple first signal terminals 410 in the first signal terminal group 41, and multiple first receiving signal lines 112 are electrically connected to multiple second signal terminals 420 in the second signal terminal group 42.

[0127] The plurality of second transmit 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 receive signal lines 212 are electrically connected to the plurality of second signal terminals 420 in the second signal terminal group 42 .

[0128] 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.

[0129] In this embodiment, the first display screen 10 and the second display screen 20 share some of the first signal terminals 410 and some of the second signal terminals 420 in the touch driver chip 40. The first transmit signal lines 111 and the second transmit signal lines 211 are connected in series via a first connection signal line 31, and the first receive signal lines 112 and the second receive signal lines 212 are connected in series via a second connection signal line 32 to implement signal input. For example, the number of first transmit signal lines 111 is 30, and the first signal terminals 410 connected thereto are Tx1 to Tx30; the number of first receive signal lines 112 is 40, and the second signal terminals 420 connected thereto are Rx1 to Rx40; the number of second transmit signal lines 211 is 15, and the first signal terminals 410 connected thereto are Tx1 to Tx15; and the number of second receive signal lines 212 is 10, and the second signal terminals 420 connected thereto are Rx1 to Rx10. It will be understood that the number of signal lines and the number of signal terminals listed in the embodiments of the present application are examples and are not limited thereto.

[0130] Continuing from the above, in this embodiment, the first display screen 10 and the second display screen 20 are connected 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.

[0131] It should be noted that in other embodiments of the present application, 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.

[0132] 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, 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.

[0133] 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, 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.

[0134] When the second receive signal line 212 is connected in parallel to the first transmit signal line 111 and the second transmit signal line 211 to the same first signal terminal 410, the driving method can be adjusted, for example, by adopting a time-sharing driving method, so that the same first signal terminal 410 drives the second receive signal line 212, the first transmit signal line 111, and the second transmit signal line 211 respectively.

[0135] In other embodiments of the present application, 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.

[0136] The second transmit signal line 211 and the second receive signal line 212 can be connected to different second signal terminals 420, or they 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, 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.

[0137] 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, 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.

[0138] When the second transmit signal line 211 is connected in parallel to 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 adopting 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.

[0139] In addition, an embodiment of the present application further provides a display device, which includes the display module described in the above embodiment.

[0140] In one embodiment, the display device includes display devices such as a mobile phone, a computer, a tablet, and a watch.

[0141] 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 here.

[0142] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0143] The above is a detailed introduction to a display module provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, comprising: A first display screen includes a plurality of first touch signal lines; a second display screen, disposed on one side of the first display screen and comprising a plurality of second touch signal lines; a circuit board assembly connected between the first display screen and the second display screen; A touch driver chip is provided on the circuit board assembly; a plurality of connecting signal lines, at least provided on the circuit board assembly; The plurality of first touch signal lines are electrically connected to the touch driver chip through the plurality of connection signal lines, and the plurality of second touch signal lines are electrically connected to the touch driver chip through the plurality of connection signal lines.

2. The display module according to claim 1, wherein: 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 driver 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.

3. The display module according to claim 2, wherein: 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 provided in the touch driver chip.

4. The display module according to claim 1, wherein: 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 during 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.

5. The display module according to claim 1, wherein: 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 provided at least on the circuit board assembly; Wherein: 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 driver chip, or the first connecting signal line is connected between the second transmitting signal line and the touch driver chip; 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 driver chip, or the second connection signal line is connected between the second receiving signal line and the touch driver chip.

6. The display module according to claim 5, wherein: The touch driver 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 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.

7. The display module according to claim 6, wherein: A plurality of first transmitting signal lines are electrically connected to a plurality of first signal terminals in the first signal terminal group, and a plurality of first receiving signal lines are electrically connected to a plurality of second signal terminals in the second signal terminal group; A plurality of second transmitting signal lines are electrically connected to a plurality of first signal terminals in the first signal terminal group, and a plurality of second receiving signal lines are electrically connected to a plurality of second signal terminals in the second signal terminal group.

8. The display module according to claim 7, wherein: 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; 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.

9. The display module according to claim 7, wherein: 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; 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.

10. The display module according to claim 6, wherein: The touch 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; 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 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.

11. The display module according to claim 10, wherein: 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; 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 6, wherein: The touch driver 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 first transmitting signal lines are electrically connected to a plurality of first signal terminals in the first signal terminal group, and a plurality of first receiving signal lines are electrically connected to a plurality of 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.

13. The display module according to claim 12, wherein: 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; 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.

14. The display module according to claim 6, wherein: The touch driver 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 second transmitting signal lines are electrically connected to a plurality of first signal terminals in the first signal terminal group, and a plurality of second receiving signal lines are electrically connected to a plurality of second signal terminals in the fourth signal terminal group.

15. The display module according to claim 14, wherein: 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.

16. The display module according to claim 5, wherein: The touch 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.

17. The display module according to claim 1, wherein: 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.

18. The display module according to claim 17, wherein: 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 inside the bend, and the second display surface is located outside the bend.

19. The display module according to claim 17, wherein: 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. The touch driving chip is arranged on the first flexible circuit board.

20. The display module according to claim 19, wherein: 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