Display module, manufacturing method thereof and mobile terminal

Abstract

The application discloses a display module, a manufacturing method thereof and a mobile terminal. The display module comprises a display panel, a back plate layer and an auxiliary function layer. The display panel comprises a flexible substrate and a display layer arranged on the flexible substrate. The back plate layer is arranged on a side of the flexible substrate away from the display layer. The auxiliary function layer is arranged on a side of the back plate layer away from the flexible substrate. The back plate layer is arranged in contact with the flexible substrate, and the auxiliary function layer is arranged in contact with the back plate layer. The back plate layer is arranged in contact with a side of the flexible substrate of the display panel away from the display layer. In the laser stripping process, laser is irradiated on a side of the auxiliary function layer away from the display layer. The auxiliary function layer, the back plate layer and the display panel are separated from the substrate as a whole, so that the back plate layer can provide protection and support for the display layer of the display panel, and the auxiliary function layer can insulate laser heat, thereby preventing the display layer from being damaged in the laser stripping process.

Description

TECHNICAL FIELD

[0001] The present application relates to the display technical field, and in particular to a display module, a manufacturing method thereof and a mobile terminal. BACKGROUND

[0002] OLED (Organic Light-Emitting Diode) display technology is a new type of display technology, which gradually attracts people's attention due to its unique advantages such as low power consumption, high saturation, fast response time and wide viewing angle, and occupies a certain position in the field of panel display technology.

[0003] In the manufacturing process of flexible OLED, the OLED display layer is manufactured on a rigid substrate, and then the LLO (Laser Lift Off) process is used to separate the display layer from the rigid substrate. In the separation process, the display layer is prone to cracks or film separation, which affects the product quality. Therefore, it is urgent to provide a display module to solve the technical problem that the display layer is easily damaged in the laser separation process. SUMMARY

[0004] The present application provides a display module, a manufacturing method thereof and a mobile terminal to solve the technical problem that the display layer is easily damaged in the laser separation process.

[0005] To solve the above-mentioned solutions, the technical solutions provided by the present application are as follows:

[0006] The present application provides a display module, which comprises:

[0007] a display panel comprising a flexible substrate and a display layer disposed on the flexible substrate;

[0008] a back plate layer disposed on a side of the flexible substrate away from the display layer; and

[0009] an auxiliary functional layer disposed on a side of the back plate layer away from the flexible substrate.

[0010] The back plate layer is in contact with the flexible substrate, and the auxiliary functional layer is in contact with the back plate layer.

[0011] In the display module of the present application, the flexible substrate comprises a flexible layer and an inorganic layer stacked, and the back plate layer is in contact with the flexible layer.

[0012] In the display module of the present application, the back plate layer comprises a first back plate and a second back plate separately arranged, and the display panel comprises a first area corresponding to the first back plate, a second area corresponding to the second back plate, and a bending area between the first area and the second area.

[0013] The bending area is provided with a black material.

[0014] In the display module, the back plate layer further comprises a third back plate arranged in the bending area, and the thickness of the third back plate is less than the thickness of any one of the first back plate or the second back plate.

[0015] In the display module, the thickness of the flexible substrate in the bending area is less than the thickness of the corresponding flexible substrate in any one of the first area or the second area.

[0016] In the display module, the auxiliary functional layer comprises a first auxiliary part and a second auxiliary part arranged separately, and in the top view direction, the first auxiliary part and the first back plate are arranged in overlap, and the second auxiliary part and the second back plate are arranged in overlap.

[0017] The area of the first auxiliary part is equal to the area of the first back plate, and the area of the second auxiliary part is equal to the area of the second back plate.

[0018] In the display module, the material of the auxiliary functional layer is a thermal insulation material, including silicon oxide or silicon nitride.

[0019] The application further provides a manufacturing method of a display module, and the method comprises the following steps:

[0020] providing a substrate;

[0021] forming a thermal conversion layer on the substrate;

[0022] forming an auxiliary functional layer on the thermal conversion layer;

[0023] forming a back plate layer on the auxiliary functional layer, and the auxiliary functional layer is arranged in contact with the back plate layer;

[0024] forming a display panel comprising a flexible substrate and a display layer on the back plate layer, and the back plate layer is arranged in contact with the flexible substrate;

[0025] separating the film layer on the auxiliary functional layer from the thermal conversion layer by using a preset process;

[0026] patterning the auxiliary functional layer and the back plate layer.

[0027] In the manufacturing method of the display module, the step of forming a back plate layer on the auxiliary functional layer comprises the following steps:

[0028] coating a back plate layer solution on the auxiliary functional layer and solidifying to form the back plate layer.

[0029] The application also provides a mobile terminal, which comprises a terminal body and the display module.

[0030] Beneficial effects: the application discloses a display module, a manufacturing method thereof and a mobile terminal, the display module comprises a display panel, a back plate layer and an auxiliary functional layer, the display panel comprises a flexible substrate and a display layer arranged on the flexible substrate, the back plate layer is arranged on a side of the flexible substrate away from the display layer, and the auxiliary functional layer is arranged on a side of the back plate layer away from the flexible substrate, the back plate layer is arranged in contact with the flexible substrate, and the auxiliary functional layer is arranged in contact with the back plate layer, the auxiliary functional layer and the back plate layer are arranged in contact, the back plate layer is arranged in contact with a side of the flexible substrate of the display panel away from the display layer, in a laser stripping process, laser is irradiated on a side of the auxiliary functional layer away from the display layer, and the auxiliary functional layer, the back plate layer and the display panel are separated from a substrate as a whole, so that the back plate layer can provide protection and support for the display layer of the display panel, and the auxiliary functional layer can insulate laser heat, thereby preventing the display layer from being damaged in the laser stripping process. BRIEF DESCRIPTION OF DRAWINGS

[0031] The technical scheme and other beneficial effects of the application will be apparent through the following detailed description of the specific embodiments of the application in combination with the drawings.

[0032] Figure 1 FIG. 1 is a side view of the display panel of the application;

[0033] Figure 2 FIG. 2 is a first cross-sectional view of the display panel of the application;

[0034] Figure 3 FIG. 3 is a second cross-sectional view of the display panel of the application;

[0035] Figure 4 FIG. 4 is a third cross-sectional view of the display panel of the application;

[0036] Figure 5 FIG. 5 is a bending view of the display panel of the application;

[0037] Figure 6 FIG. 6 is a first top view of the display panel of the application;

[0038] Figure 7 FIG. 7 is a second top view of the display panel of the application;

[0039] Figures 8A to 8E FIG. 8 is a process flow diagram of the display panel of the application.

[0040] Explanation of reference signs:

[0041] The display panel 110, the flexible substrate 111, the display layer 112, the back plate layer 120, the auxiliary functional layer 130, the flexible layer 1111, the inorganic layer 1112, the first back plate 121, the second back plate 122, the first area AA, the second area BB, the bending area CC, the third back plate 123, the first auxiliary part 131, the second auxiliary part 132, the substrate 150, and the thermal conversion layer 140. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower directions of the device in the actual use or working state, and specifically refer to the drawing surface direction in the drawings; and "inner" and "outer" refer to the contour of the device.

[0043] In the manufacturing process of the flexible OLED, the OLED display layer is manufactured on a substrate, and the substrate is generally a rigid material, such as glass. Then, the display layer is separated from the substrate by using a LLO (Laser Lift Off) process, and then a back plate is attached below the display layer. In the separation process, the display layer is prone to cracks or film separation, which affects the product quality. Therefore, there is an urgent need to provide a display module to solve the technical problem that the display layer is easily damaged in the laser separation process. The present application proposes the following solutions based on the above technical problem.

[0044] The present application provides a display module, please refer to Figure 1 The display module includes a display panel 110, the display panel 110 includes a flexible substrate 111 and a display layer 112 disposed on the flexible substrate 111; the display panel 110 further includes a back plate layer 120 disposed on the side of the flexible substrate 111 away from the display layer 112 and an auxiliary functional layer 130 disposed on the side of the back plate layer 120 away from the flexible substrate 111; wherein the back plate layer 120 is in contact with the flexible substrate 111, and the auxiliary functional layer 130 is in contact with the back plate layer 120.

[0045] The auxiliary functional layer 130 is arranged in contact with the back plate layer 120, the back plate layer 120 is arranged in contact with the flexible substrate 111 of the display panel 110 away from the display layer 112, in the laser stripping process, the laser is irradiated on the side of the auxiliary functional layer 130 away from the display layer 112, and the auxiliary functional layer 130, the back plate layer 120 and the display panel 110 are separated from the substrate 150 as a whole, so that the back plate layer 120 can provide protection and support for the display layer 112 of the display panel 110, and the auxiliary functional layer 130 can isolate the laser heat, thereby preventing the display layer 112 from being damaged in the laser stripping process.

[0046] The technical solutions of the present application will be described in combination with specific embodiments.

[0047] In the embodiment, the display panel 110 is a flexible display panel 110, such as an OLED panel, a Mini-LED panel, a Micro-LED panel, etc.

[0048] In the embodiment, the material of the flexible substrate 111 includes polyimide, polycarbonate, polyether sulfone, polyethylene terephthalate, polyethylene naphthalate, polyarylate, or glass fiber reinforced plastic.

[0049] In the embodiment, the back plate layer 120 is arranged in contact with the flexible substrate 111, the back plate layer 120 has flexibility and can be bent, and also has a certain rigidity, so as to provide support for the display panel 110, and the material of the back plate layer 120 includes organic glass PMMA (polymethyl methacrylate).

[0050] In the embodiment, the auxiliary functional layer 130 is arranged in contact with the back plate layer 120, the auxiliary functional layer 130 can further enhance the support capacity of the back plate layer 120. Meanwhile, the auxiliary functional layer 130 has heat insulation capacity, in the LLO process, the auxiliary functional layer 130 can insulate heat, and protect the back plate layer 120 and the film layer above the back plate layer 120 from the influence of heat. The material of the auxiliary functional layer 130 includes silicon oxide, silicon nitride, silicon oxynitride, etc.

[0051] In the display module of the present application, please refer to Figure 1 , the flexible substrate 111 includes a flexible layer 1111 and an inorganic layer 1112 arranged in layers, and the back plate layer 120 is arranged in contact with the flexible layer 1111.

[0052] In the embodiment, please refer to Figure 1The flexible substrate 111 includes a flexible layer 1111 and an inorganic layer 1112 stacked together, the flexible layer 1111 includes polyimide or the like, and the inorganic layer 1112 includes silicon oxide, silicon nitride, silicon oxynitride or the like.

[0053] In this embodiment, the flexible layer 1111 is an organic material including polyimide or the like, and the back plate layer 120 is an organic material including organic glass or the like, and the two have good affinity and can be closely attached.

[0054] In this embodiment, the back plate layer 120 is arranged in contact with the flexible layer 1111, and the display layer 112 is located on the side of the inorganic layer 1112 away from the flexible layer 1111.

[0055] In this embodiment, the back plate layer 120 can be made by a film forming process such as coating, deposition or the like, which is not limited in the present application. In the prior art, the back plate layer 120 is usually attached to the side of the display layer 112 away from the light emitting surface after the display layer 112 is laser peeled from the substrate 150. During laser peeling, since the flexible substrate 111 of the display layer 112 and the substrate 150 only include a thin heat insulation layer, and the laser energy is uneven or there are foreign matters on the substrate 150, etc., the local area cannot uniformly receive the laser energy, and forced tearing during peeling can cause the film layer of the display layer 112 to separate or be damaged. At the same time, when the back plate layer 120 is attached to the display layer 112, various attachment defects can easily occur in the attachment process, for example, there are bubbles, warping, dirt, etc. after the back plate layer 120 is attached, resulting in yield loss. By directly making the back plate layer 120 on the side of the display layer 112 away from the light emitting surface by a film forming process, the above problems can be avoided.

[0056] In this embodiment, the flexible substrate 111 is arranged to include a flexible layer 1111 and an inorganic layer 1112, the flexible layer 1111 can have good affinity with the back plate layer 120, and prevent the flexible layer 1111 from separating from the back plate layer 120 during bending.

[0057] In the display module of the present application, please refer to Figures 2 to 5 The back plate layer 120 includes a first back plate 121 and a second back plate 122 arranged separately, the display panel 110 includes a first area AA corresponding to the first back plate 121, a second area BB corresponding to the second back plate 122, and a bending area CC located between the first area AA and the second area BB; wherein the bending area CC is provided with a black material. Among them, Figures 2 to 4 is the flattened state of the display module, Figure 5 is the bent state of the display module.

[0058] In this embodiment, please refer toFigure 2 The back plate layer 120 includes a first back plate 121 and a second back plate 122 arranged separately, and the first back plate 121 and the second back plate 122 are arranged in the same layer, wherein the area between the first back plate 121 and the second back plate 122 is a bending area CC, and a black material is arranged on the exposed section of the first back plate 121 and the second back plate 122 in the bending area CC.

[0059] In the embodiment, the bending state of the display module includes a static bending as shown in Figure 5 After bending, the second area BB is located at the back of the first area AA, the bending area CC is in an arc shape, and the bending area CC connects the first area AA and the second area BB.

[0060] In the embodiment, referring to Figures 2 to 4 Separate arrangement includes complete disconnection and partial disconnection, that is, the first back plate 121 and the second back plate 122 can be completely disconnected or partially connected. Referring to Figure 3 The case of partial connection includes thinning the thickness of the back plate layer 120 in the bending area CC. The case of partial connection can also include forming a pattern on the back plate layer 120 in the bending area CC, including forming a through hole or a half-through hole pattern.

[0061] In the embodiment, referring to Figures 6 to 7 The bending area CC can be located at any position of the display module. For example, referring to Figure 6 The bending area CC can be located at the position of the non-display area of the display module, so as to realize static bending, and the bending state is as shown in Figure 5 Referring to Figure 7 The bending area CC can be located at the display area of the display module, so as to realize dynamic bending, that is, to realize the folding screen function, wherein Figure 7 is the flat state of the display module. The effect of dynamic bending is similar to Figure 5 , and the bending direction includes inward folding and outward folding, which is not shown in the application.

[0062] In the embodiment, the black material is the residue formed after the back plate layer 120 is laser etched. Since the back plate layer 120 is an organic material, the organic material is carbonized under the action of high temperature in the laser etching process, and black substances are generated.

[0063] In the embodiment, the first back plate 121 and the second back plate 122 are arranged separately, that is, a groove is formed in the bending area CC between the first back plate 121 and the second back plate 122. In the bending area CC, by arranging the groove, the thickness of the film layer of the display module can be reduced, the internal stress of the film layer in the bending process can be reduced, and the bending of the display module can be better realized.

[0064] In the display module of the present application, referring to Figure 3 , the back plate layer 120 further comprises a third back plate 123 arranged in the bending area CC, the thickness of the third back plate 123 is less than the thickness of any one of the first back plate 121 or the second back plate 122.

[0065] In the present embodiment, referring to Figure 3 , the back plate layer 120 further comprises a third back plate 123 arranged in the bending area CC, that is, the first back plate 121 and the second back plate 122 are not completely separated, and the third back plate 123 connects the first back plate 121 and the second back plate 122. The thickness of the third back plate 123 is less than the thickness of the first back plate 121, and the thickness of the third back plate 123 is less than the thickness of the second back plate 122. Through the above arrangement, the present embodiment can retain part of the back plate layer 120 to prevent heat damage to the display layer 112 when laser etching the bending area CC.

[0066] In the display module of the present application, referring to Figure 4 , the thickness of the flexible substrate 111 in the bending area CC is less than the thickness of the flexible substrate 111 corresponding to any one of the first area AA or the second area BB.

[0067] In the present embodiment, referring to Figure 4 , the thickness of the flexible substrate 111 in the bending area CC is different from the thickness of any one of the first area AA or the second area BB. Through the above arrangement, the present embodiment can further reduce the thickness of the bending area CC to prevent excessive stress in the bending process of the display module, thereby realizing better bending of the display module.

[0068] In the display module of the present application, referring to Figures 6 to 7 , the auxiliary function layer 130 comprises a first auxiliary part 131 and a second auxiliary part 132 arranged separately, in the plan view direction, the first auxiliary part 131 and the first back plate 121 are arranged in overlap, and the second auxiliary part 132 and the second back plate 122 are arranged in overlap; wherein the area of the first auxiliary part 131 is equal to the area of the first back plate 121; the area of the second auxiliary part 132 is equal to the area of the second back plate 122.

[0069] In the present embodiment, referring to Figures 6 to 7The first auxiliary part 131 has the same size as the first back plate 121 and is arranged in overlapping manner, and the second auxiliary part 132 has the same size as the second back plate 122 and is arranged in overlapping manner. In the embodiment, the auxiliary functional part can provide further support for the back plate layer 120, and the auxiliary functional part has heat insulation capacity, and can isolate laser heat in the LLO process, so as to prevent the laser from damaging the back plate layer 120 and the film layer above the back plate layer 120.

[0070] In the display module, the material of the auxiliary functional layer 130 is heat insulation material, including silicon oxide or silicon nitride.

[0071] The application further provides a manufacturing method of the display module, and the method comprises the following steps.

[0072] Referring to Figure 8A , a substrate 150 is provided;

[0073] Referring to Figure 8B , a heat conversion layer 140 is formed on the substrate 150;

[0074] Referring to Figure 8C , an auxiliary functional layer 130 is formed on the heat conversion layer 140;

[0075] Referring to Figure 8D , a back plate layer 120 is formed on the auxiliary functional layer 130, and the auxiliary functional layer 130 is arranged in contact with the back plate layer 120;

[0076] Referring to Figure 8E , a display panel 110 comprising a flexible substrate 111 and a display layer 112 is formed on the back plate layer 120, and the back plate layer 120 is arranged in contact with the flexible substrate 111;

[0077] The film layer on the auxiliary functional layer 130 is separated from the heat conversion layer 140 by using a preset process;

[0078] The auxiliary functional layer 130 and the back plate layer 120 are subjected to patterning treatment.

[0079] In the embodiment, the substrate 150 is a rigid substrate, including glass.

[0080] In the embodiment, the heat conversion layer 140 can be formed by coating process, or can be manufactured by other conventional process, and the application does not limit the heat conversion layer 140. The thickness of the heat conversion layer 140 can be 10 microns. The material of the heat conversion layer 140 can be polyimide.

[0081] In the embodiment, the auxiliary functional layer 130 can be formed by a chemical vapor deposition process, or can be made by other conventional processes, which are not limited in the application. The thickness of the auxiliary functional layer 130 is greater than the thickness of the thermal conversion layer 140, and the thickness of the auxiliary functional layer 130 can be 50 microns. The material of the auxiliary functional layer 130 can be silicon oxide, silicon nitride, etc.

[0082] In the embodiment, the backboard layer 120 can be formed by a coating process, or can be made by other conventional processes, which are not limited in the application. The thickness of the backboard layer 120 is greater than the thickness of the auxiliary functional layer 130, and the thickness of the backboard layer 120 can be 500 microns. The material of the backboard layer 120 can be organic glass PMMA (polymethyl methacrylate). Among them, the organic glass can be a modified organic glass, for example, the organic glass can be doped with nano-particle silicon dioxide material. The modified organic glass has improved thermal stability, and at the same time, has excellent optical performance.

[0083] The process of making the display panel 110 on the backboard layer 120 is a conventional process, which is not limited in the application. Among them, the display panel 110 includes a flexible substrate 111 and a display layer 112 formed on the flexible substrate 111.

[0084] In the embodiment, the preset process can include a laser stripping process, by laser irradiating the substrate 150 away from the side of the display layer 112, the thermal conversion layer 140 melts under the action of laser heat, thereby separating from the auxiliary functional layer 130, to obtain the display module of the application. Among them, the thermal conversion layer 140 is a material that can melt under the action of laser heat, for example, polyimide. The auxiliary functional layer 130 is a heat insulation material, and its melting point is higher than that of the thermal conversion layer 140. When the thermal conversion layer 140 melts under the action of laser heat, the auxiliary functional layer 130 is not affected. At the same time, the auxiliary functional layer 130 has heat insulation capacity, which can prevent the laser heat from being transmitted to the backboard layer 120 direction. The material of the auxiliary functional layer 130 can be silicon oxide, silicon nitride, etc.

[0085] In the embodiment, the auxiliary functional layer 130 and the backboard layer 120 are patterned to form the bending area CC. The method of patterning the auxiliary functional layer 130 and the backboard layer 120 can include laser etching. Among them, the laser energy used to form the bending area CC is higher than the laser energy used to melt the auxiliary functional layer 130. Those skilled in the art can choose according to the needs, which are not limited in the application. By adjusting the laser energy, the bending area CC can be realized as Figures 2 to 4The different etching depths are shown, thereby satisfying the different etching thickness requirements of the bending area CC. The embodiment can also realize the patterning of the bending area CC by adjusting the shape and position of the laser light speed. By adjusting the shape, etching depth and etching position of the bending area CC, a static folding display panel 110 or a dynamic folding display panel 110 can be manufactured.

[0086] In the manufacturing method of the display module, the step of forming the back plate layer 120 on the auxiliary functional layer 130 includes: coating a back plate layer 120 solution on the auxiliary functional layer 130 and solidifying to form the back plate layer 120.

[0087] In the embodiment, the material of the back plate layer 120 includes organic glass, and the back plate layer 120 is obtained by coating an organic glass solution on the auxiliary functional layer 130 and then solidifying.

[0088] The application further provides a mobile terminal, which includes a terminal main body and the display module.

[0089] In the embodiment, the terminal can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, etc.

[0090] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0091] The display panel 110 and the mobile terminal provided by the embodiments of the application are described in detail above, and the principles and implementation manners of the application are described by applying specific examples in this paper. The above embodiment descriptions are only used to help understand the technical solutions and core ideas of the application; those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A display module, characterized in that: include: A display panel comprising a flexible substrate and a display layer disposed on the flexible substrate; a backplane layer, disposed on a side of the flexible substrate away from the display layer; as well as an auxiliary functional layer, arranged on a side of the backplane layer away from the flexible substrate, wherein the auxiliary functional layer is made of a heat-insulating material; The backplane layer is arranged in contact with the flexible substrate, the auxiliary function layer is arranged in contact with the backplane layer, and the backplane layer is formed on the auxiliary function layer through a film forming process.

2. The display module according to claim 1, wherein: The flexible substrate includes a flexible layer and an inorganic layer that are stacked, and the backplane layer is in contact with the flexible layer.

3. The display module according to claim 2, wherein: The backplane layer includes a first backplane and a second backplane that are separately arranged, and the display panel includes a first area corresponding to the first backplane, a second area corresponding to the second backplane, and a bending area located between the first area and the second area; Wherein, black material is provided in the bending area.

4. The display module according to claim 3, wherein: The backplane layer further includes a third backplane disposed in the bending area, and a thickness of the third backplane is smaller than a thickness of either the first backplane or the second backplane.

5. The display module according to claim 3, wherein: The thickness of the flexible substrate in the bending region is smaller than the thickness of the flexible substrate corresponding to either the first region or the second region.

6. The display module according to claim 3, wherein: The auxiliary functional layer includes a first auxiliary portion and a second auxiliary portion that are separately arranged. In a top view direction, the first auxiliary portion and the first back plate are overlapped, and the second auxiliary portion and the second back plate are overlapped. The first auxiliary portion and the first back plate have the same area; the second auxiliary portion and the second back plate have the same area.

7. The display module according to claim 1, wherein: The auxiliary functional layer includes silicon oxide or silicon nitride.

8. A method for manufacturing a display module, characterized in that: include: providing a substrate; forming a heat conversion layer on the substrate; forming an auxiliary functional layer on the heat conversion layer, wherein the material of the auxiliary functional layer is a thermal insulation material; forming a backplane layer on the auxiliary function layer, wherein the auxiliary function layer is disposed in contact with the backplane layer, and the backplane layer is formed on the auxiliary function layer by a film forming process; forming a display panel including a flexible substrate and a display layer on the backplane layer, wherein the backplane layer is arranged in contact with the flexible substrate; irradiating the auxiliary function layer on a side away from the display layer with a laser, so as to separate the film layer on the auxiliary function layer from the heat conversion layer; The auxiliary function layer and the backplane layer are patterned.

9. The method for manufacturing a display module according to claim 8, wherein: The step of forming a backplane layer on the auxiliary functional layer comprises: A backplane layer solution is coated on the auxiliary functional layer and cured to form the backplane layer.

10. A mobile terminal, characterized in that: It comprises a terminal body and the display module according to any one of claims 1 to 7, wherein the display module and the terminal body are combined into one body.

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