Display module and mobile terminal

Abstract

The embodiment of the application discloses a display module and a mobile terminal, the display module comprises a metal wiring layer, the first wiring layer of the metal wiring layer comprises a plurality of first electromagnetic induction coils and a plurality of light-emitting signal lines, and the second wiring layer comprises a plurality of second electromagnetic induction coils; the metal wiring layer further comprises a plurality of wiring units, the wiring unit is a region surrounded by two first electromagnetic wires in adjacent two first electromagnetic induction coils close to the same side edge of the display module and two second electromagnetic wires in adjacent two second electromagnetic induction coils close to the same side edge of the display module; the first wiring layer comprises a first gap between each metal wiring; the area ratio of the first gap in the wiring unit to the area of the wiring unit is greater than 1%, which effectively avoids the problem that the whole metal is formed in the light-emitting backboard due to the dense arrangement of the metal wiring, the electromagnetic induction signal generated by the second electromagnetic wire is shielded, the touch range of the touch display module is larger, and the precision is higher.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display module and its mobile terminal. Background Technology

[0002] In the field of small and medium-sized displays, integration technology has become a key research and development direction, namely, how to achieve panel functionality integration through the development of related technologies. Integration can ensure that the functionality is not lost while keeping the thickness of the display panel constant. Display panel integration technology can bring many derivative additional functions to the display panel, enabling it to gradually transition from a simple display interface to a comprehensive sensory and interactive interface. Currently, most mainstream interactive stylus technologies are based on capacitive touch, which is low-cost. However, capacitive touch requires a large charge difference, resulting in a larger pen tip, poor writing experience, high latency, and low accuracy, which limits its development in professional fields (such as painting). Electromagnetic touch technology, on the other hand, offers a superior writing experience, low latency, and high accuracy, making it ideal for styluses with various functional requirements.

[0003] Currently, some technologies integrate mini LED backlighting with ElectroMagnetic Resonance (EMR) technology, making full use of the space in the mini LED backlight to integrate EMR touch functionality, thus saving space within the display module that integrates touch functionality. However, because the metal traces in the mini LED backlight are relatively wide, while integration reduces the thickness of the display module, it also results in a large area of ​​metal within the backlight space. This large metal area poses a risk of shielding some electromagnetic induction signals, leading to a decrease in the overall electromagnetic induction signal strength of the display module and a narrower touch range. Summary of the Invention

[0004] This application provides a display module and its mobile terminal, which can effectively avoid the problem that the electromagnetic traces and light-emitting signal lines in the backlight are densely arranged on the same layer to form a large area of ​​metal, and the hollow area on the large area of ​​metal is insufficient, which leads to the problem that some electromagnetic signals are easily shielded.

[0005] This application embodiment provides a display module, including a light-emitting backplate, the light-emitting backplate comprising:

[0006] substrate;

[0007] A metal trace layer is disposed on the substrate. The metal trace layer includes multiple metal traces, each of which includes multiple first electromagnetic induction coils arranged along a first direction, multiple second electromagnetic induction coils arranged along a second direction, and multiple light-emitting signal lines. The multiple light-emitting signal lines include multiple first light-emitting signal lines. Each first electromagnetic induction coil includes at least two first electromagnetic traces extending along the second direction, and each second electromagnetic induction coil includes at least two second electromagnetic traces extending along the first direction. The metal trace layer includes an insulated and stacked first trace layer and a second trace layer. The first trace layer includes multiple first electromagnetic induction coils and multiple first light-emitting signal lines, and the second trace layer includes multiple second electromagnetic induction coils.

[0008] Multiple light-emitting devices are spaced apart on the metal trace layer, and the first light-emitting signal line is electrically connected to the light-emitting devices;

[0009] The metal trace layer includes multiple trace units. Each trace unit is an area enclosed by two first electromagnetic traces of two adjacent first electromagnetic induction coils that are close to the same side of the display module, and two second electromagnetic traces of two adjacent second electromagnetic induction coils that are close to the same side of the display module. The first trace layer includes a first gap located between each of the metal traces. Within each trace unit, the ratio of the area of ​​the first gap to the area of ​​the trace unit is greater than 1%.

[0010] Optionally, the plurality of light-emitting signal lines further include a plurality of second light-emitting signal lines; the second wiring layer includes a plurality of second light-emitting signal lines, and the second wiring layer includes a second gap, the second gap being located between each of the metal wirings;

[0011] Within the wiring unit, the ratio of the area of ​​the second gap to the area of ​​the wiring unit is greater than 1%.

[0012] Optionally, within the routing unit, the ratio of the area of ​​the first gap on the first routing layer to the area of ​​the routing unit is less than or equal to 6%; the ratio of the area of ​​the second gap on the second routing layer to the area of ​​the routing unit is less than or equal to 6%.

[0013] Optionally, within the wiring unit, the ratio of the area of ​​the first gap to the area of ​​the wiring unit is equal to the ratio of the area of ​​the second gap to the area of ​​the wiring unit.

[0014] Optionally, the metal trace layer further includes a third trace layer, and the plurality of light-emitting signal lines further include a plurality of third light-emitting signal lines, and the plurality of third light-emitting signal lines are distributed in the third trace layer; the third trace layer includes a third gap, and the third gap is located between each of the metal traces;

[0015] Within the wiring unit, the ratio of the area of ​​the first gap to the area of ​​the wiring unit is greater than or equal to 50%, and the ratio of the area of ​​the third gap to the area of ​​the wiring unit is greater than or equal to 50%.

[0016] Optionally, an insulating layer is provided between the first wiring layer and the second wiring layer, and a connection hole is provided on the insulating layer. The connection hole is located between the light-emitting device and the first light-emitting signal line, and the light-emitting device is electrically connected to the first light-emitting signal line through the connection hole.

[0017] Optionally, the width of the first light-emitting signal line is smaller than the width of the third light-emitting signal line.

[0018] Optionally, the display module includes a touch area, and each of the first electromagnetic induction coils includes a first end, a second end, and a first winding portion connected between the first end and the second end and located within the touch area, wherein the first winding portion includes two first electromagnetic traces.

[0019] Each of the second electromagnetic induction coils includes a third end, a fourth end, and a second winding portion connected between the third end and the fourth end and located within the touch area. The second winding portion includes two second electromagnetic traces.

[0020] The routing unit is the area enclosed by the first electromagnetic routing lines in two adjacent first electromagnetic induction coils that are close to the corresponding first end, and the second electromagnetic routing lines in two adjacent second electromagnetic induction coils that are close to the corresponding third end.

[0021] Optionally, the first gap includes a first side and a second side, the length of the first side is greater than the length of the second side, and the extension direction of the first side is parallel to the second direction.

[0022] Optionally, the spacing between the plurality of first electromagnetic induction coils is equal, the spacing between the plurality of second electromagnetic induction coils is equal, and the plurality of wiring units are arranged in an array on the metal wiring layer.

[0023] Optionally, the display module further includes a display panel disposed opposite to the light-emitting backplate, and the display panel is disposed on one side of the light-emitting surface of the light-emitting backplate.

[0024] This application provides a mobile terminal, including the display module described in any of the above embodiments.

[0025] The beneficial effects of this invention include at least the following:

[0026] This application describes a display module comprising a backlight panel, the backlight panel including a substrate, a metal trace layer disposed on the substrate, and multiple light-emitting devices disposed on the metal trace layer. The metal trace layer includes multiple first electromagnetic induction coils, multiple second electromagnetic induction coils, and multiple light-emitting signal lines. The metal trace layer includes a first trace layer and a second trace layer. The first trace layer includes multiple first electromagnetic induction coils and multiple first light-emitting signal lines, and the second trace layer includes multiple second electromagnetic induction coils. The metal trace layer includes multiple trace units, each trace unit consisting of two first electromagnetic traces from two adjacent first electromagnetic induction coils near the same side of the display module, and two traces from two adjacent second electromagnetic induction coils near the same side of the display module. The area enclosed by two second electromagnetic traces on the same side of the group; the first trace layer includes a first gap, which is located between each of the metal traces; within the trace unit, the ratio of the area of ​​the first gap to the area of ​​the trace unit is greater than 1%, so that the electromagnetic induction signal generated by the second electromagnetic induction coil of the second trace layer will not be shielded due to the dense arrangement of metal traces on the first trace layer forming a whole metal layer, so that the touch display module with touch function, after combining EMR and light-emitting backplane, has a smaller display module space, while the electromagnetic induction signal range of the touch display panel will not be affected, effectively increasing the touch range of the touch display module after combining EMR and light-emitting backplane, and improving the touch accuracy of the touch display module. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the film layer of the display module provided in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the structure of the metal trace layer of a display module provided in an embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the structure of the first wiring layer and the second electromagnetic wiring of a display module provided in an embodiment of this application;

[0031] Figure 4This is a schematic diagram of the structure of the second wiring layer and the first electromagnetic wiring of a display module provided in an embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the structure of a light-emitting backplate of a display module provided in an embodiment of this application;

[0033] Figure 6 This is a structural schematic diagram of a first-direction cross-section of the light-emitting backplate of a display module provided in an embodiment of this application;

[0034] Figure 7 This is a structural schematic diagram of a second-direction cross-section of the light-emitting backplate of a display module provided in an embodiment of this application;

[0035] Figure 8 This is a schematic diagram of the structure of the backlight of another display module provided in this application embodiment;

[0036] Figure 9 This is a structural schematic diagram of the first direction cross-section of the light-emitting backplate of another display module provided in the embodiments of this application;

[0037] Figure 10 This is a structural schematic diagram of the second direction cross-section of the light-emitting backplate of another display module provided in this application embodiment;

[0038] Figure 11 This is a schematic diagram of the structure of the first wiring layer of another display module provided in this application embodiment;

[0039] Figure 12 This is a schematic diagram of a second electromagnetic induction coil generating a magnetic induction signal in a display module according to an embodiment of this application;

[0040] Figure 13 This is a schematic diagram of a touch device generating a magnetic induction signal to a second electromagnetic wire induction coil in a display module according to an embodiment of this application;

[0041] Figure 14 This is a schematic diagram showing how the absence of a first gap in the first wiring layer of a display module can shield the electromagnetic wiring of the second wiring layer.

[0042] Figures 15-17 This is a schematic diagram illustrating the varying electromagnetic induction signal transmission strength of a second electromagnetic trace within a wiring unit of a display module, where the proportion of the first gap gradually increases.

[0043] Figure 18 This is a schematic diagram illustrating how the electromagnetic induction signal of the second electromagnetic trace is shielded when the first gap on the first trace layer of the display module is an array of holes, according to an embodiment of this application.

[0044] Figure 19 This is a schematic diagram of the winding structure of the first electromagnetic induction coil and the second electromagnetic induction coil of a display module provided in an embodiment of this application;

[0045] Figure 20 It is a line graph showing the ratio of the area of ​​the first gap to the area of ​​the wiring unit, and the electromagnetic induction signal transmittance of the second electromagnetic wiring.

[0046] Figure Labels

[0047] Substrate-10, metal trace layer-20, light-emitting device layer-30, display panel-40, cover plate-50, touch control-60, driving circuit layer-70, driving circuit-701;

[0048] First wiring layer - 201, second wiring layer - 202, insulating layer - 203, planarization layer - 2031, inorganic insulating layer - 2032, third wiring layer - 204; first gap - 201B, second gap - 202B, third gap - 203B, wiring unit - S; first electromagnetic induction coil - M11, second electromagnetic induction coil - M21, first electromagnetic trace - M1, second electromagnetic trace - M2; light-emitting signal line - L, first light-emitting signal line - L1, second light-emitting signal line - L2, third light-emitting signal line - L3, first direction - X, second direction - Y, electromagnetic induction signal - EIS, connecting hole - CH, first side - a, second side - b, third side - c, fourth side - d; first end - D1, second end - D2, third end - D3, fourth end - D4; Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] This application provides a display module and a mobile terminal. Detailed descriptions are provided below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments. Furthermore, in the description of this application, the term "comprising" means "including but not limited to". The terms first, second, third, etc., are used merely as illustrative and do not impose numerical requirements or establish an order. Various embodiments of the present invention may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the present invention; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single digits within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Additionally, whenever a numerical range is indicated herein, it means including any referenced number (fraction or integer) within the indicated range.

[0051] This application provides a display module, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a light-emitting backplate, the light-emitting backplate comprising:

[0052] substrate 10;

[0053] A metal trace layer 20 is disposed on the substrate 10. The metal trace layer 20 includes multiple metal traces, including multiple first electromagnetic induction coils M11 arranged along the first direction X, multiple second electromagnetic induction coils M21 arranged along the second direction Y, and multiple light-emitting signal lines L.

[0054] The plurality of light-emitting signal lines L include a plurality of first light-emitting signal lines L1; the first electromagnetic induction coil M11 includes at least two first electromagnetic traces M1 extending along the second direction Y, and the second electromagnetic induction coil M21 includes at least two second electromagnetic traces M2 extending along the first direction X.

[0055] The metal trace layer 20 includes an insulated and stacked first trace layer 201 and a second trace layer 202. The first trace layer 201 includes a plurality of first electromagnetic induction coils M11 and a plurality of first light-emitting signal lines L1. The second trace layer 202 includes a plurality of second electromagnetic induction coils M21.

[0056] Multiple light-emitting devices are spaced apart on the metal trace layer 20, and the light-emitting signal line L is electrically connected to the light-emitting devices;

[0057] The metal trace layer 20 includes multiple trace units S. Each trace unit S is an area enclosed by two first electromagnetic traces M1 of two adjacent first electromagnetic induction coils M11 that are close to the same side of the display module, and two second electromagnetic traces M2 of two adjacent second electromagnetic induction coils M21 that are close to the same side of the display module. The first trace layer 201 includes a first gap 201B, which is located between each of the metal traces. Within each trace unit S, the ratio of the area of ​​the first gap 201B to the area of ​​the trace unit S is greater than 1%.

[0058] It should be noted that, in order to further reduce the thickness of the display module, the display module adopts EMR technology combined with the backlight of the display panel to achieve thinner processing. However, when arranging the wiring, the above technical solution is prone to causing the wiring density of the wiring layer to be too high, forming a whole surface of metal film (i.e., a metal film layer formed by the close wiring of electromagnetic wiring and light-emitting signal lines). This metal film has a shielding effect on electromagnetic signals, affecting the range and intensity of electromagnetic induction signals of the electromagnetic induction coils above or below it. As a result, the touch display module thinned by combining EMR technology with the backlight of the display panel is prone to problems such as narrow touch range and low touch accuracy.

[0059] To solve the above-mentioned technical problems, this embodiment provides a metal trace layer 20 including multiple metal traces, which include: multiple first electromagnetic induction coils M11 arranged along the first direction X, multiple second electromagnetic induction coils M21 arranged along the second direction Y, and multiple light-emitting signal lines L.

[0060] The first electromagnetic induction coil M11 includes at least two first electromagnetic traces M1 extending along the second direction Y (the current directions in the two first electromagnetic traces M1 are opposite), and the second electromagnetic induction coil M21 includes at least two second electromagnetic traces M2 extending along the first direction X (the current directions in the two second electromagnetic traces M2 are opposite).

[0061] The metal trace layer 20 includes an insulated first trace layer 201 and a second trace layer 202. The first electromagnetic induction coil M11 is arranged in the first trace layer 201, and the second electromagnetic induction coil M21 is arranged in the second trace layer 202. The first electromagnetic induction coil M11 and the second electromagnetic induction coil M21 are arranged in different layers. The first trace layer 201 is also provided with a first light-emitting signal line L1.

[0062] The wiring unit S is the area enclosed by two first electromagnetic wirings M1 of two adjacent first electromagnetic induction coils M11 that are close to the same side of the display module, and two second electromagnetic wirings M2 of two adjacent second electromagnetic induction coils M21 that are close to the same side of the display module.

[0063] The first electromagnetic induction coil M11 and the first light-emitting signal line L1 in the first wiring layer 201 are closely arranged. The first wiring layer 201 also includes a first gap 201B, which is an empty area between each metal trace in the wiring unit S. In the wiring unit S, the area of ​​the first gap 201B is set to be greater than 1% of the area of ​​the wiring unit S, so that there is no whole metal film on the side of the second electromagnetic induction coil M21 (the side facing the substrate 10 or the side away from the substrate 10, in this embodiment the side close to the substrate 10). The electromagnetic induction signal EIS generated by the second electromagnetic induction coil M21 can penetrate the first wiring layer 201 better through the first gap 201B, effectively expanding the touch range of the integrated display module and improving the touch accuracy of the display module.

[0064] Specifically, refer to Figure 1 and Figure 2 As shown, the display module includes a substrate 10, a metal trace layer 20 disposed on the substrate 10, a light-emitting device layer 30 disposed on the metal trace layer 20, a display panel 40 disposed on the light-emitting device layer 30, and a cover plate 50 disposed on the display panel 40. In other embodiments of the present invention, the cover plate 50 may not be provided, which is not limited here.

[0065] Specifically, the substrate 10 may be a glass substrate 10, or the material of the substrate 10 may be at least one of organic polymer materials such as glass, polyimide, polymethyl methacrylate, polyethylene terephthalate, polycarbonate, polyethylene naphthalate, and cyclic olefin copolymers. In this embodiment, the substrate 10 is a composite substrate, which includes a glass substrate and a buffer layer disposed on the glass substrate. A metal wiring layer 20 is disposed on the buffer layer, and the thickness of the wiring layer (metal wiring only) in the metal wiring layer 20 is greater than or equal to 0.5 micrometers and less than or equal to 3 micrometers.

[0066] Specifically, such as Figure 5As shown, the metal trace layer 20 includes at least two stacked trace layers and an insulating layer 203 for insulation between each trace layer. In this embodiment, the metal trace layer 20 includes at least a first trace layer 201, a second trace layer 202, and an insulating layer 203 disposed on the first trace layer 201 and the second trace layer 202. In other embodiments, the metal trace layer 20 may also include a third trace layer 204, a fourth trace layer, etc. The specific configuration can be determined according to the actual wiring requirements of the backlight panel. Setting multiple trace layers can effectively reduce the impedance of the metal traces (especially the light-emitting signal lines L), but the thickness of the backlight module will also increase accordingly. The specific configuration can be adjusted according to the actual production needs. This embodiment uses setting two trace layers as an example for explanation.

[0067] Specifically, the second wiring layer 202 can be disposed either on the side of the first wiring layer 201 closer to the substrate 10 or on the side of the first wiring layer 201 farther from the substrate 10; there is no specific limitation. This embodiment uses the example of the second wiring layer 202 being disposed on the side of the first wiring layer 201 farther from the substrate 10 for illustration. Figure 6 and Figure 7 As shown.

[0068] Specifically, such as Figure 6 and Figure 7 As shown, the insulating layer 203 may include a planarization layer 2031 and an inorganic insulating layer 2032 disposed on the planarization layer.

[0069] Specifically, the metal trace layer 20 includes multiple metal traces, which include multiple first electromagnetic induction coils M11 arranged along the first direction X, multiple second electromagnetic induction coils M21 arranged along the second direction Y, and multiple light-emitting signal lines L; the first electromagnetic induction coils M11 and the second electromagnetic induction coils M21 are disposed in different layers, and the multiple metal traces may also include other traces such as driving voltage lines and data lines, which are not limited here.

[0070] Specifically, the first electromagnetic induction coil M11 includes at least two first electromagnetic traces M1 extending along the second direction Y, and the second electromagnetic induction coil M21 includes at least two second electromagnetic traces M2 extending along the first direction X.

[0071] Specifically, the first direction X intersects the second direction Y, and the angle between the first direction X and the second direction Y is preferably 90°. The specific angle value is not limited, and 30°, 45°, 60°, etc. are all acceptable.

[0072] Furthermore, such as Figure 19As shown, the display module includes a touch area. Each first electromagnetic induction coil M11 includes a first end D1, a second end D2, and a first winding portion connected between the first end D1 and the second end D2 and located within the touch area. The first winding portion includes two first electromagnetic traces M1 extending along the second direction Y, and two first connecting electromagnetic traces. The first electromagnetic induction coils M11 are connected in the following order: first end D1, first electromagnetic trace M1, first connecting electromagnetic trace, first electromagnetic trace M1, first connecting electromagnetic trace, and second end D2. In this embodiment, a single-turn electromagnetic induction coil is used as an example for illustration. In reality, the first electromagnetic induction coil M11 can be a multi-turn electromagnetic induction coil. The first end D1 can be a signal input terminal, and the second end D2 is a signal output terminal. Current flows from the first end D1 to the second end D2.

[0073] Each of the second electromagnetic induction coils M21 includes a third end D3, a fourth end D4, and a second winding portion connected between the third end D3 and the fourth end D4 and located within the touch area; the second winding portion includes two second electromagnetic traces M2 extending along the first direction X, and two second connecting electromagnetic traces; the second electromagnetic induction coils M21 are connected in the following order: third end D3, second electromagnetic traces M2, second connecting electromagnetic traces, second electromagnetic traces M2, second connecting electromagnetic traces, and fourth end D4. In this embodiment, a single-turn electromagnetic induction coil is used as an example for explanation. In reality, the second electromagnetic induction coil M21 can be a multi-turn electromagnetic induction coil. The third end D3 can be a signal input terminal, and the fourth end D4 can be a signal output terminal. Current flows from the third end D3 to the fourth end D4.

[0074] It should be noted that by sensing the change in magnetic flux within the electromagnetic induction coil at different positions of the display module, the coordinates of the touch control of the display module can be obtained, resulting in a better touch effect and higher touch accuracy for the display module. At the same time, the substrate 10 of the backlight in this application does not need to be transparent, thus providing ample space for wiring the electromagnetic induction coil without affecting the light-emitting function of the backlight. The resulting integrated touch display module can effectively reduce the thickness of the display module.

[0075] Specifically, on the first wiring layer 201, the routing direction and routing method of the first light-emitting signal line L1 are not limited. The first light-emitting signal line L1 is disposed on the periphery of the light-emitting device. The routing line of the first light-emitting signal line L1 can be a straight line or a bent line, which can be adjusted according to the actual production situation. In this embodiment, the first light-emitting signal line L1 is electrically connected to the light-emitting device.

[0076] Specifically, the materials of the first electromagnetic induction coil M11, the second electromagnetic induction coil M21, and the light-emitting signal line L are conductive materials, preferably metals or alloys, such as copper, aluminum, silver, or their alloys. The thickness of the metal trace can be greater than or equal to 0.5 micrometers and less than or equal to 3 micrometers.

[0077] Specifically, the metal trace layer further includes a driving circuit layer 70 disposed on the substrate 10. The first trace layer 201 is disposed on the side of the driving circuit layer 70 away from the substrate 10. The driving circuit layer 70 includes a plurality of driving circuits 701. The light-emitting signal line L is electrically connected to the corresponding driving circuit 701. The driving circuit 701 controls the light-emitting device to emit light through the light-emitting signal line L.

[0078] Specifically, a light-emitting device layer 30 is provided on the metal trace layer 20. The light-emitting device layer 30 includes multiple light-emitting devices, which can be mini LED lamps or Micro-LED lamps. The light-emitting devices are electrically connected to the light-emitting signal line L. The extension paths of the first electromagnetic induction coil M11 and the second electromagnetic induction coil M21 can be set between adjacent light-emitting devices, and there is no specific limitation.

[0079] Specifically, the metal trace layer 20 includes multiple trace units S. Each trace unit S is the area enclosed by two first electromagnetic traces M1 of two adjacent first electromagnetic induction coils M11 that are close to the same side of the display module, and two second electromagnetic traces M2 of two adjacent second electromagnetic induction coils M21 that are close to the same side of the display module. The above arrangement includes the following embodiments:

[0080] The wiring unit S can be the area enclosed by the first electromagnetic wiring M1 in two adjacent first electromagnetic induction coils M11 that are close to the corresponding first end D1, and the second electromagnetic wiring M2 in two adjacent second electromagnetic induction coils M21 that are close to the corresponding third end D3.

[0081] Alternatively, the wiring unit S can specifically be the area enclosed by the first electromagnetic wiring M1 in two adjacent first electromagnetic induction coils M11 that are close to the corresponding second end D2, and the second electromagnetic wiring M2 in two adjacent second electromagnetic induction coils M21 that are close to the corresponding fourth end D4.

[0082] Alternatively, the wiring unit S may specifically be the area enclosed by the first electromagnetic wiring M1 in two adjacent first electromagnetic induction coils M11 that are both close to the corresponding first end D1, and the second electromagnetic wiring M2 in two adjacent second electromagnetic induction coils M21 that are both close to the corresponding fourth end D4.

[0083] Alternatively, the wiring unit S may specifically be the area enclosed by the first electromagnetic wiring M1 in two adjacent first electromagnetic induction coils M11 that are both close to the corresponding second end D2, and the second electromagnetic wiring M2 in two adjacent second electromagnetic induction coils M21 that are both close to the corresponding third end D3.

[0084] It should be noted that, in addition to the first electromagnetic trace M1 and the second electromagnetic trace M2 at the edge of the wiring unit S, the wiring unit S also has multiple metal traces. The metal traces in the wiring unit S may include part of the first winding portion of other first electromagnetic induction coils M11 in the same row, as well as light-emitting signal lines, etc.

[0085] Within the wiring unit, the first wiring layer 201 includes a first gap 201B, which is located between each of the metal traces. That is, the first gap 201B is an empty area between each metal trace. By controlling the size of the gap between the metal traces, that is, setting the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S to be greater than 1%, it is possible to prevent the first wiring layer 201 from forming a full-surface metal film layer. The first gap 201B can be used for the magnetic induction signal generated by the second electromagnetic induction coil M21 to pass through, thus preventing the electromagnetic induction signal EIS generated by the second electromagnetic induction coil M21 from being shielded by the first wiring layer 201.

[0086] Specifically, the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S can be any one of 1.01%, 1.1%, 1.2%, 1.5%, 2%, 3%, 4%, 5%, 8%, 10%, and 50%.

[0087] In one example, when the metal trace layer 20 is a two-layer trace layer, the ratio of the area of ​​the first gap 201B to the area of ​​the trace unit S is preferably less than 50%, more preferably less than 10%, more preferably less than 6%, and more preferably less than 2%.

[0088] Specifically, there are multiple first gaps 201B, and the area and shape of the multiple first gaps 201B can be the same or different.

[0089] Specifically, the shape of the first gap 201B is not limited and can be any of the following: square, circle, rectangle, regular shape, or irregular shape. The specific shape can be selected according to the actual wiring situation, and this application does not impose any restrictions.

[0090] It is understood that by setting the display module to include a light-emitting backplate, the light-emitting backplate includes a substrate 10, a metal trace layer 20 disposed on the substrate 10, and a plurality of light-emitting devices disposed on the metal trace layer 20. The metal traces of the metal trace layer 20 include a plurality of first electromagnetic induction coils M11, a plurality of second electromagnetic induction coils M21, and a plurality of first light-emitting signal lines L1. The metal trace layer 20 includes a first trace layer 201 and a second trace layer 202. The first trace layer 201 includes a plurality of first electromagnetic induction coils M11 and a plurality of first light-emitting signal lines L1, and the second trace layer 202 includes a plurality of second electromagnetic induction coils M21. The metal trace layer 20 includes a plurality of trace units S. The trace unit S is two first electromagnetic traces M1 of two adjacent first electromagnetic induction coils M11 that are close to the same side of the display module, and two adjacent second electromagnetic induction coils M21. The area enclosed by two second electromagnetic traces M2 near the same side of the display module in 21; the first trace layer 201 includes a first gap 201B, which is located between each of the metal traces; within the trace unit S, the ratio of the area of ​​the first gap 201B to the area of ​​the trace unit S is set to be greater than 1%, so that the electromagnetic induction signal EIS generated by the second electromagnetic induction coil M21 of the second trace layer 202 will not be shielded due to the dense arrangement of metal traces on the first trace layer 201 forming a whole metal layer, so that the touch-enabled display module, after combining EMR and light-emitting backplane, has a smaller display module space, while the electromagnetic induction range of the electromagnetic induction signal EIS of the touch display panel will not be affected, effectively increasing the touch range of the touch display module after combining EMR and light-emitting backplane, and improving the touch accuracy of the touch display module.

[0091] In one embodiment, such as Figure 4 As shown, the second wiring layer 202 also includes multiple second light-emitting signal lines L2, and the second wiring layer 202 includes a second gap 202B, which is located between each of the metal wirings.

[0092] Within the wiring unit S, the ratio of the area of ​​the second gap 202B to the area of ​​the wiring unit S is greater than 1%.

[0093] Specifically, on the second wiring layer 202, the routing direction and routing method of the second light-emitting signal line L2 are not limited. The second light-emitting signal line L2 is disposed on the periphery of the light-emitting device. The routing shape of the second light-emitting signal line L2 can be a straight line or a bent line, which can be adjusted according to the actual production situation. The second light-emitting signal line L2 on the second wiring layer 202 is electrically connected to the light-emitting device.

[0094] Furthermore, such as Figure 5 As shown, the second light-emitting signal line L2 can be electrically connected to the light-emitting device by providing a through connection hole CH on the insulating layer 203.

[0095] Specifically, an insulating layer 203 between the first wiring layer 201 and the second wiring layer 202 is provided with a through hole, through which the first light-emitting signal line L1 can be electrically connected to the second light-emitting signal line L2.

[0096] Specifically, an insulating layer 203 on the second wiring layer 202 is provided with a connection hole CH, which is located between the light-emitting device and the second light-emitting signal line L2 for electrical connection between the light-emitting device and the second light-emitting signal line L2.

[0097] Specifically, the ratio of the area of ​​the second gap 202B to the area of ​​the wiring unit S can be any one of 1.01%, 1.1%, 1.2%, 1.5%, 2%, 3%, 4%, 5%, 8%, 10%, and 50%.

[0098] In one example, when the metal trace layer is a two-layer trace layer, the ratio of the area of ​​the second gap 202B to the area of ​​the trace unit S is preferably less than 50%, more preferably less than 10%, more preferably less than 6%, and more preferably less than 2%.

[0099] As described in the above embodiments, when the first routing layer 201 includes a first gap 201B and the second routing layer 202 includes a second gap 202B, at least some areas of the first gap 201B and the second gap 202B do not overlap.

[0100] Specifically, the light-emitting signal line L in the metal trace includes a positive light-emitting signal line and a negative light-emitting signal line. The positive light-emitting signal line and the negative light-emitting signal line can be arranged in the same layer or in different layers.

[0101] The current on the positive light-emitting signal line is a positive current, and the current on the negative light-emitting signal line is a negative current. The light-emitting backplane also includes a driving module, which is connected to multiple driving circuits 701 of the driving circuit layer 70. The driving module outputs different timing voltage signals to each driving circuit 701. Each driving circuit 701 is also connected to the light-emitting devices of the light-emitting backplane via a corresponding positive or negative light-emitting signal line. This allows the driving module to control the lighting of the corresponding row of light-emitting devices according to the timing voltage signal (i.e., pulse voltage) output by the driving module. See details... Figure 11 and Figure 12 .

[0102] It is understandable that by setting a first gap 201B on the first wiring layer 201 and a second gap 202B on the second wiring layer 202, within the wiring unit S, the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S is greater than 1%, and the ratio of the area of ​​the second gap 202B to the area of ​​the wiring unit S is greater than 1%. This ensures that the first electromagnetic induction coil M11 in the first wiring layer 201 will not be shielded from electromagnetic induction signal EIS due to the dense arrangement of the light-emitting signal line L and the second electromagnetic induction coil M21 in the second wiring layer 202. At the same time, the second electromagnetic induction coil M21 in the second wiring layer 202 will not be shielded from electromagnetic induction signal EIS due to the dense arrangement of the light-emitting signal line L and the first electromagnetic induction coil M11 in the first wiring layer 201. This further improves the touch sensing effect and accuracy of the display module. Since the light-emitting signal line L can be distributed in the first wiring layer 201 and the second wiring layer 202, the impedance of the light-emitting signal line L can be further reduced.

[0103] In one embodiment, within the routing unit S, the ratio of the area of ​​the first gap 201B on the first routing layer 201 to the area of ​​the routing unit S is less than or equal to 6%; the ratio of the area of ​​the second gap 202B on the second routing layer 202 to the area of ​​the routing unit S is less than or equal to 6%.

[0104] It should be noted that if the area ratio of the first gap 201B on the first wiring layer 201 is too large, it will result in insufficient wiring space for the first electromagnetic induction coil M11 and the light-emitting signal line L, which will limit the linewidth of the light-emitting signal line L that drives the light-emitting device to emit light, and significantly reduce the uniformity of light intensity of each light-emitting device, affecting the normal display of the display panel. If the area ratio of the first gap 201B on the first wiring layer 201 is within a certain range, it is more conducive to improving the space utilization of the display module.

[0105] Specifically, see Figures 14-17 and Figure 20 ,according to Figure 14 , Figure 15 , Figure 16 and Figure 17 The sequence is such that the second electromagnetic induction coil M21 (taking a single-turn single coil as an example) is located below the first trace layer 201, from... Figure 20 It can be seen that within the wiring unit S, the area ratio of the first gap 201B in the first wiring layer 201 gradually increases. As the area ratio of the first gap 201B gradually increases, the intensity of the electromagnetic induction signal of the second electromagnetic induction coil M21 first increases and then decreases. When the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S is 2%, it reaches its peak value.

[0106] In order to reasonably arrange the metal traces in the first wiring layer 201, the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S can be set to 1% to 6%, and more preferably 1% to 2%; wherein, the above range does not include the endpoint value of 1%, and the ratio of the area of ​​the first gap 201B to the area of ​​the first wiring layer 201 can be any one of 1.01%, 1.1%, 1.2%, 1.5%, 2%, 3%, 4%, 5%, and 6%.

[0107] Specifically, when the ratio of the area of ​​the first gap 201B to the area of ​​the first wiring layer 201 is in the range of 1%-6%, and the endpoint value of 1% is not taken, the utilization rate of the backplane wiring space and the shielding effect can be better balanced.

[0108] See details Figure 20 , Figure 20 A line graph showing the change in the electromagnetic induction intensity of the second electromagnetic induction coil M21 (single-turn single coil) in the first wiring layer 201 and the first gap 201B in the first wiring unit S, which have different area ratios.

[0109] Multiple sets of samples were collected. In different samples, the ratio of the first gap 201B of the first trace layer 201 within the trace unit S to the area of ​​the trace unit S was different. Under the same conditions, the transmittance of the electromagnetic induction signal EIS generated by the corresponding second electromagnetic trace M2 was measured, and the following data were obtained, and a line graph was generated. The data is shown in Table 1, and the line graph is shown in Table 2. Figure 20 .

[0110] Table 1

[0111]

[0112] pass Figure 20 It can be seen that when the first gap 201B occupies 0 to 2% of the area of ​​the trace unit (excluding the endpoint value 0), the intensity of the electromagnetic induction signal EIS gradually increases. When it is in the range of 2% to 6%, the intensity of the electromagnetic induction signal EIS gradually decreases. After exceeding 14%, the intensity of the electromagnetic induction signal EIS gradually increases to the upper limit of 100%.

[0113] To ensure that the light-emitting signal lines on the backlight can be routed normally without affecting the normal light emission of the backlight, and to achieve good touch effect, wide touch range, and high touch accuracy of the display module, it is reasonable to select the first gap 201B to occupy less than 6% of the wiring unit area. This ensures that the electromagnetic induction intensity of the electromagnetic induction coil is above 72%, which can better balance the touch effect and the space utilization of the wiring.

[0114] Specifically, since the electromagnetic induction signal EIS is an electromagnetic wave, when the first gap 201B or the second gap 202B is small, the electromagnetic induction signal EIS can interfere with the wave when it passes through the first gap 201B or the second gap 202B, thereby increasing the intensity of the electromagnetic induction signal EIS presented by the corresponding display module. Therefore, when the area ratio of the first gap 201B to the wiring unit S is in the range of 0 to 2%, the intensity of the electromagnetic induction signal EIS presented by the corresponding display module shows an increasing trend. When the area ratio of the first gap 201B to the wiring unit S exceeds 2%, the interference phenomenon decreases, and the intensity of the electromagnetic induction signal EIS presented by the display module shows a decreasing trend within a certain range.

[0115] It is understandable that by reasonably limiting the ratio range of the area of ​​the first gap 201B to the area of ​​the first wiring layer 201, the wiring layout scheme of the backlight in the display module can be further optimized. This ensures the maximum utilization of space and effectively prevents the influence of excessively dense wiring on the electromagnetic induction signal (EIS) of the touch display module after the integration of EMR and backlight. This improves the touch accuracy of the thinner touch display module and expands the touch range of the thinner touch display module.

[0116] In one embodiment, within the wiring unit S, the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S is equal to the ratio of the area of ​​the second gap 202B to the area of ​​the wiring unit S.

[0117] It should be noted that, as Figure 12 and Figure 13 As shown, the display module provided in this embodiment of the invention may also include a touch control 60, such as a stylus. The touch control 60 is used to generate a magnetic field. When the touch control 60 is touched, the magnetic flux in the area enclosed by each electromagnetic line M (specifically, an electromagnetic induction coil) can be changed. When the magnetic flux in the area enclosed by each electromagnetic line (specifically, an electromagnetic induction coil) changes, the voltage in its electromagnetic induction coil will also change, thereby determining the touch position of the touch control 60.

[0118] Specifically, the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S is set to be equal to the ratio of the area of ​​the second gap 202B to the area of ​​the wiring unit S, so that the intensity of the electromagnetic induction signal EIS in the second direction Y generated by the first electromagnetic induction coil M11 of the display module is the same as the intensity of the electromagnetic induction signal EIS in the first direction X of the second electromagnetic induction coil M21.

[0119] Specifically, within the routing unit S, the relative positions of the first gap 201B and the second gap 202B are not limited, nor are the number of the first gap 201B and the number of the second gap 202B. The requirement is that the ratio of the area of ​​the first gap 201B to the area of ​​the routing unit S is equal to the ratio of the area of ​​the second gap 202B to the area of ​​the routing unit S. In the direction perpendicular to the substrate 10, the first gap 201B and the second gap 202B can partially overlap.

[0120] In one example, in the display module, among the plurality of first electromagnetic induction coils M11 arranged along the first direction X, the number of turns of the first electromagnetic induction coil M11 near the edge of the display module is greater than the number of turns of the first electromagnetic induction coil M11 near the center of the display module; and among the plurality of second electromagnetic induction coils M21 arranged along the second direction Y, the number of turns of the second electromagnetic induction coil M21 near the edge of the display module is greater than the number of turns of the second electromagnetic induction coil M21 near the center of the display module.

[0121] It should be noted that in the formula Φ=nBS, Φ is the magnetic flux, n is the number of coils in the electromagnetic induction coil, B is the strength of the generated magnetic field, and S is the area enclosed by each electromagnetic induction coil. When B and S are constant, increasing the number of coils in the electromagnetic induction coil can increase the magnetic flux, thereby increasing the positioning accuracy of the touch screen.

[0122] To increase the screen-to-body ratio of the display module, the display panel is usually made curved. Therefore, for the same area enclosed by the electromagnetic induction coil, the side needs to cover a larger area. In order not to reduce the touch accuracy, the magnetic flux on the side of the display module needs to be increased. This can be effectively achieved by increasing the number of coils of the electromagnetic induction coil.

[0123] Specifically, the electromagnetic signals generated by the first electromagnetic induction coil M11 and the second electromagnetic induction coil M21 are in different directions. By changing the electromagnetic induction signals EIS in different directions, the touch position of the touch control 60 can be accurately located.

[0124] It is understandable that by setting the first gap 201B on the first wiring layer 201 and the second gap 202B on the second wiring layer 202 to have the same area ratio relative to the wiring unit S, the intensity of the electromagnetic induction signal EIS of the touch display panel in the first direction X and the second direction Y can be the same, the touch accuracy in the first direction X and the second direction Y can be the same, and the touch effect of the display module can be better.

[0125] In one instance, such as Figure 8 , Figure 9 and Figure 10As shown, the metal trace layer 20 includes a third trace layer 204, and the plurality of light-emitting signal lines L also include a plurality of third light-emitting signal lines L3, and the plurality of third light-emitting signal lines L3 are distributed in the third trace layer 204; the third trace layer 204 includes a third gap 204B, and the third gap 204B is located between each of the metal traces.

[0126] Specifically, within the wiring unit S, the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S is greater than or equal to 50%, and the ratio of the area of ​​the third gap 204B to the area of ​​the wiring unit S is greater than or equal to 50%.

[0127] Specifically, the third wiring layer 204 is disposed on the side of the first wiring layer 201 near the substrate 10, and the light-emitting signal line L is distributed on the third wiring layer 204 and the first wiring layer 201.

[0128] Specifically, the third gap 204B is disposed between each of the third light-emitting signal lines L3, and an insulating layer 203 is disposed between the third wiring layer 204 and the first wiring layer 201. The insulating layer 203 may include a planarization layer 2031 and an inorganic insulating layer 2032 disposed on the planarization layer. The first wiring layer 201 may be disposed on the inorganic insulating layer 2032.

[0129] Specifically, the third routing layer 204 may also include other metal traces, such as driving voltage lines, data lines, etc., and the third gap 204B may be located between the metal traces in the routing unit S.

[0130] Specifically, a through hole can be provided on the insulating layer 203 between the three wiring layers 204 and the first wiring layer 201, and the first light-emitting signal line L1 can be electrically connected to the third light-emitting signal line L3 through the through hole.

[0131] Specifically, the shape of the third gap 204B is not limited and can be any of the following: square, circle, rectangle, regular shape, or irregular shape. The shape can be selected according to the actual metal trace situation in the third trace layer 204, and this application does not impose any restrictions.

[0132] Specifically, the distribution density of the first light-emitting signal line L1 can be set to be less than the distribution density of the third light-emitting signal line L3, so that the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S is greater than or equal to 50%, and the ratio of the area of ​​the third gap 204B to the area of ​​the wiring unit S is greater than or equal to 50%.

[0133] Specifically, within the wiring unit S, the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S is greater than or equal to 50%, and the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S can be any one of 50%, 51%, 52%, 55%, 60%, and 70%.

[0134] Specifically, within the wiring unit S, the ratio of the area of ​​the third gap 204B to the area of ​​the wiring unit S is greater than or equal to 50%, and the ratio of the area of ​​the third gap 204B to the area of ​​the wiring unit S can be any one of 50%, 51%, 52%, 55%, 60%, and 70%.

[0135] Specifically, the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S can be the same as or different from the ratio of the area of ​​the third gap 204B to the area of ​​the wiring unit S, but preferably the same.

[0136] Specifically, within the wiring unit S, by increasing the ratio of the area of ​​the first gap 201B in the first wiring layer to the area of ​​the wiring unit S, and the ratio of the area of ​​the second gap 202B to the area of ​​the wiring unit S, the throughput of the electromagnetic induction signal EIS is increased, thereby enhancing the touch control effect. The metal wiring is set in three layers, so that the light-emitting signal line L has sufficient space for wiring.

[0137] In one instance, such as Figure 10 and Figure 11 As shown, the width of the first light-emitting signal line L1 can be set to be smaller than the width of the third light-emitting signal line L3, so that the ratio of the area of ​​the first gap 201B to the area of ​​the wiring unit S is greater than or equal to 50%, and the ratio of the area of ​​the third gap 204B to the area of ​​the wiring unit S is greater than or equal to 50%.

[0138] It is understood that the metal trace layer 20 includes a first trace layer 201, a second trace layer 202, and a third trace layer 204. The light-emitting signal line L is distributed in the third trace layer 204 and the first trace layer 201, and the electromagnetic traces are distributed in the first trace layer 201 and the second trace layer 202. This allows the metal traces to be reasonably distributed in the metal trace layer, effectively preventing the electromagnetic induction signals EIS of the first electromagnetic induction coil M11 and the second electromagnetic induction coil M21 from being shielded by the tightly arranged metal traces.

[0139] Following the above example, an insulating layer 203 is provided between the first wiring layer 201 and the second wiring layer 202. A connection hole CH is provided on the insulating layer 203. The connection hole CH is located between the light-emitting device and the first light-emitting signal line L1. The light-emitting device is electrically connected to the first light-emitting signal line L1 through the connection hole CH.

[0140] Specifically, the shape and size of the connecting hole CH are not limited, and the position and shape can be adjusted according to actual production needs.

[0141] In one instance, such as Figure 3 As shown, the first gap 201B includes a first side a and a second side b. The length of the first side a is greater than the length of the second side b, and the extension direction of the first side a is parallel to the second direction Y.

[0142] Specifically, such as Figure 4 As shown, the second gap 202B includes a third side c and a fourth side d. The length of the third side c is greater than the length of the fourth side d, and the extension direction of the third side c is parallel to the first direction X.

[0143] Specifically, most of the metal traces of the first trace layer 201 extend along the second direction Y, which makes the first gap 201B rectangular, and the extension direction of the long side is parallel to the second direction Y. This reduces the cutting of the electromagnetic induction signal EIS generated by the metal traces extending along the first direction X by the second electromagnetic induction coil M21, and reduces the shielding effect of the first trace layer 201 on the second electromagnetic induction coil M21.

[0144] Specifically, in comparison Figure 17 and Figure 18 Most of the metal traces of the second trace layer 202 extend along the first direction X, which makes the second gap 202B rectangular, and the extension direction of the long side is parallel to the first direction X. This reduces the cutting of the electromagnetic induction signal EIS generated by the first electromagnetic induction coil M11 by the metal traces extending along the second direction Y, and reduces the shielding effect of the second trace layer 202 on the first electromagnetic induction coil M11.

[0145] In one example, the spacing between the plurality of first electromagnetic induction coils M11 is equal, the spacing between the plurality of second electromagnetic induction coils M21 is equal, and the plurality of wiring units S are arranged in an array on the metal wiring layer 20.

[0146] Specifically, the spacing between the plurality of first electromagnetic induction coils M11 can be equal to the spacing between the second electromagnetic induction coils M21.

[0147] Specifically, by setting the first electromagnetic induction coil M11 to be evenly distributed on the first wiring layer 201 and the second electromagnetic induction coil M21 to be evenly distributed on the second wiring layer 202, the electromagnetic induction intensity generated by the electromagnetic wiring at all parts of the display module is more uniform, the electromagnetic induction signal EIS of the corresponding display module is also evenly distributed, the touch accuracy at all parts of the display module is uniform, and the precise positioning of the touch control 60 is achieved.

[0148] The present invention also provides a mobile terminal, wherein the mobile terminal includes a display module employing any of the above embodiments.

[0149] Specifically, mobile terminals include, but are not limited to, the following types: rollable or foldable mobile phones, watches, wristbands, televisions or other wearable display or touch electronic devices, as well as flexible smartphones, tablets, laptops, desktop monitors, televisions, smart glasses, smartwatches, ATMs, digital cameras, in-vehicle displays, medical displays, industrial control displays, e-readers, electrophoretic display devices, game consoles, double-sided displays, glasses-free 3D displays, mirror display devices, etc.

[0150] In summary, this application provides a display module including a backlight panel. The backlight panel includes a substrate 10, a metal trace layer 20 disposed on the substrate 10, and multiple light-emitting devices disposed on the metal trace layer 20. The metal traces of the metal trace layer 20 include multiple first electromagnetic induction coils M11, multiple second electromagnetic induction coils M21, and multiple light-emitting signal lines L. The metal trace layer 20 includes a first trace layer 201 and a second trace layer 202. The first trace layer 201 includes multiple first electromagnetic induction coils M11 and multiple first light-emitting signal lines L1, and the second trace layer 202 includes multiple second electromagnetic induction coils M21. The metal trace layer 20 includes multiple trace units S. Each trace unit S consists of two first electromagnetic traces M1 of two adjacent first electromagnetic induction coils M11 that are close to the same side of the display module, and two adjacent second electromagnetic induction coils M21. The area enclosed by two second electromagnetic traces M2 near the same side of the display module; the first trace layer 201 includes a first gap 201B, which is located between each of the metal traces; within the trace unit S, the ratio of the area of ​​the first gap 201B to the area of ​​the trace unit S is greater than 1%, so that the electromagnetic induction signal EIS generated by the second electromagnetic induction coil M21 of the second trace layer 202 will not be shielded due to the dense arrangement of metal traces on the first trace layer 201 forming a whole metal layer, so that the touch-enabled display module, after combining EMR and light-emitting backplane, has a smaller display module space, while the electromagnetic induction range of the electromagnetic induction signal EIS of the touch display panel will not be affected, effectively increasing the touch range of the touch display module after combining EMR and light-emitting backplane, and improving the touch accuracy of the touch display module.

[0151] The above provides a detailed description of a display module and mobile terminal provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display module, characterized in that, Includes a light-emitting backplate, the light-emitting backplate comprising: substrate; A metal trace layer is disposed on the substrate. The metal trace layer includes multiple metal traces, each of which includes multiple first electromagnetic induction coils arranged along a first direction, multiple second electromagnetic induction coils arranged along a second direction, and multiple light-emitting signal lines. The multiple light-emitting signal lines include multiple first light-emitting signal lines. Each first electromagnetic induction coil includes at least two first electromagnetic traces extending along the second direction, and each second electromagnetic induction coil includes at least two second electromagnetic traces extending along the first direction. The metal trace layer includes an insulated and stacked first trace layer and a second trace layer. The first trace layer includes multiple first electromagnetic induction coils and multiple first light-emitting signal lines, and the second trace layer includes multiple second electromagnetic induction coils. Multiple light-emitting devices are spaced apart on the metal trace layer, and the first light-emitting signal line is electrically connected to the light-emitting devices; The metal trace layer includes multiple trace units. Each trace unit is an area enclosed by two first electromagnetic traces of two adjacent first electromagnetic induction coils near the same side of the display module, and two second electromagnetic traces of two adjacent second electromagnetic induction coils near the same side of the display module. The first trace layer includes a first gap located between each metal trace. Within each trace unit, the ratio of the area of ​​the first gap to the area of ​​the trace unit is greater than 1% and less than or equal to 6%. The plurality of light-emitting signal lines also include a plurality of second light-emitting signal lines; the second wiring layer includes the second light-emitting signal lines, the second wiring layer includes a second gap, the second gap is located between each of the metal wirings, and within the wiring unit, the ratio of the area of ​​the second gap to the area of ​​the wiring unit is greater than 1% and less than or equal to 6%.

2. The display module as described in claim 1, characterized in that, Within the wiring unit, the ratio of the area of ​​the first gap to the area of ​​the wiring unit is equal to the ratio of the area of ​​the second gap to the area of ​​the wiring unit.

3. The display module as described in claim 1, characterized in that, The metal trace layer further includes a third trace layer, and the plurality of light-emitting signal lines further include a plurality of third light-emitting signal lines, and the plurality of third light-emitting signal lines are distributed in the third trace layer; the third trace layer includes a third gap, and the third gap is located between each of the metal traces; Specifically, within the wiring unit, the ratio of the area of ​​the first gap to the area of ​​the wiring unit is greater than or equal to 50%, and the ratio of the area of ​​the third gap to the area of ​​the wiring unit is greater than or equal to 50%.

4. The display module as described in claim 3, characterized in that, An insulating layer is provided between the first wiring layer and the second wiring layer. A connection hole is provided on the insulating layer. The connection hole is located between the light-emitting device and the first light-emitting signal line. The light-emitting device is electrically connected to the first light-emitting signal line through the connection hole.

5. The display module as described in claim 3, characterized in that, The width of the first light-emitting signal line is smaller than the width of the third light-emitting signal line.

6. The display module as described in claim 1, characterized in that, The display module includes a touch area, and each of the first electromagnetic induction coils includes a first end, a second end, and a first winding portion connected between the first end and the second end and located within the touch area. The first winding portion includes two first electromagnetic traces. Each of the second electromagnetic induction coils includes a third end, a fourth end, and a second winding portion connected between the third end and the fourth end and located within the touch area. The second winding portion includes two second electromagnetic traces. The routing unit is the area enclosed by the first electromagnetic routing lines in two adjacent first electromagnetic induction coils that are close to the corresponding first end, and the second electromagnetic routing lines in two adjacent second electromagnetic induction coils that are close to the corresponding third end.

7. The display module as described in claim 1, characterized in that, The first gap includes a first side and a second side, the length of the first side is greater than the length of the second side, and the extension direction of the first side is parallel to the second direction.

8. The display module as described in claim 1, characterized in that, The spacing between the plurality of first electromagnetic induction coils is equal, the spacing between the plurality of second electromagnetic induction coils is equal, and the plurality of wiring units are arranged in an array on the metal wiring layer.

9. The display module as described in claim 1, characterized in that, The display module also includes a display panel disposed opposite to the light-emitting backplate, and the display panel is disposed on one side of the light-emitting surface of the light-emitting backplate.

10. A mobile terminal, characterized in that, Includes the display module as described in any one of claims 1 to 9.

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