Display module and display module manufacturing method

Abstract

The invention relates to a display module and a display module manufacturing method. The display module comprises a substrate; the display screen body is arranged on one side of the substrate; the cover plate is arranged on the side, away from the substrate, of the display screen body; wherein the orthographic projection edge of the cover plate on the substrate is at least partially overlapped with the orthographic projection edge of the display screen body on the substrate. Therefore, the cover plate and the orthographic projection edge, facing the substrate, of the display screen body are at least partially overlapped, the edge of the display screen body is at least partially flush with the edge of the cover plate, and at least part of the edge of the cover plate does not protrude out of the edge of the display screen body, so that the frame of the display module is narrow, and the display screen body can be prevented from edge leakage; and the narrow bezel requirement of the display module is met.

Description

Technical Field

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

[0002] OLED (Organic Light Emitting Diode) display modules have become a type of display module with great competitiveness and good development prospects due to a series of advantages such as lighter weight, higher brightness, lower power consumption, faster response, higher clarity, better flexibility and higher luminous efficiency.

[0003] In display modules, the cover is usually designed to be extended on one side relative to the screen body, because the cover has to be fitted with precision, and only by extending the cover outside the screen body can the screen body be guaranteed to have no missing edges. However, this results in a wider border for the display module, which cannot meet the demand for a narrow border. Summary of the invention

[0004] Based on this, it is necessary to provide a display module and a method for manufacturing the display module to address the problem that traditional display modules cannot meet the requirements of narrow bezels.

[0005] A display module, comprising:

[0006] substrate;

[0007] A display screen is arranged on one side of the substrate;

[0008] A cover plate, arranged on a side of the display screen away from the substrate;

[0009] Wherein, an orthographic projection edge of the cover plate on the substrate at least partially overlaps with an orthographic projection edge of the display screen on the substrate.

[0010] In some embodiments, the orthographic projection of the cover plate on the substrate is within the orthographic projection range of the display screen on the substrate;

[0011] The display screen includes a display area and a peripheral functional area, the orthographic projection of the display area on the substrate overlaps with the orthographic projection of the cover plate on the substrate, a portion of the orthographic projection of the peripheral functional area on the substrate overlaps with the orthographic projection of the cover plate on the substrate, and another portion of the orthographic projection of the peripheral functional area on the substrate protrudes from the orthographic projection of the cover plate on the substrate;

[0012] A portion of the orthographic projection edge of the peripheral functional area on the substrate overlaps with a portion of the orthographic projection edge of the cover plate on the substrate, and another portion of the orthographic projection edge of the peripheral functional area on the substrate protrudes from another portion of the orthographic projection edge of the cover plate on the substrate.

[0013] In some embodiments, the invention further comprises: a module layer, the module layer being located on a side of the display screen away from the substrate, the orthographic projection edge of the module layer on the substrate at least partially overlapping the orthographic projection edge of the display screen on the substrate;

[0014] The module layer includes a polarizing layer located on a side of the display screen away from the substrate and a transparent optical adhesive layer located on a side of the polarizing layer away from the substrate.

[0015] In the above-mentioned display module, the cover plate at least partially overlaps with the orthographic projection edge of the display screen toward the substrate, the edge of the display screen is at least partially flush with the edge of the cover plate, and at least part of the edge of the cover plate does not protrude from the edge of the display screen. In this way, the frame of the display module is narrow, which can meet the demand for a narrow frame of the display module while ensuring that the display screen does not leak edges.

[0016] A method for manufacturing a display module comprises the following steps:

[0017] Providing a cover plate prefabricated member, the cover plate prefabricated member comprising a first region and a second region surrounding the first region, wherein at least the second region among the first region and the second region is not tempered;

[0018] Providing a screen body preform, and bonding the screen body preform and the cover plate preform to form a display module preform 100, wherein the screen body preform includes a display screen body, and the first area covers at least a portion of the display screen body;

[0019] Integrally cutting the display module preform 100 along a preset cutting line in the second region to form a display module having at least a cover plate and a display screen body;

[0020] Wherein, the orthographic projection edge of the cover plate on the display screen at least partially overlaps with the edge of the display screen.

[0021] In some embodiments, the display screen preform includes a cuttable area surrounding at least one side of the display screen;

[0022] When the cover plate preform is attached to the display screen preform, the second area at least covers the cuttable area, and the projection of the cutting line toward the display screen preform is located in the cuttable area.

[0023] In some embodiments, the display screen includes a display area and a peripheral functional area surrounding the display area, and the cuttable area surrounds the peripheral functional area;

[0024] When the cover plate preform is attached to the display screen, the first area covers the display area, or the first area covers the display area and at least part of the peripheral functional area; the second area covers the cuttable area and covers the area of ​​the peripheral functional area not covered by the first area.

[0025] In some embodiments, the step of providing the cover plate prefabricated component is specifically:

[0026] The first region and the second region of the cover plate prefabricated member are not tempered; or

[0027] The first region of the cover plate preform is tempered, and the second region is not tempered.

[0028] In some embodiments, after the step of integrally cutting the display module along a preset cutting line, the following steps are further included:

[0029] The hardness of the outer surface of the cover plate preform is increased to form the cover plate, and the hardness of the outer surface of the second region of the cover plate is greater than the hardness of the outer surface of the second region of the cover plate preform.

[0030] In some embodiments, the step of increasing the hardness of the outer surface of the cover plate preform is specifically:

[0031] Performing a tempering treatment on the outer surface of the cover plate prefabricated member; or

[0032] A hardness enhancement layer is coated on the outer surface of the cover plate preform, and the hardness of the hardness enhancement layer is greater than the hardness of the second region.

[0033] In some embodiments, the steps of bonding the screen body prefabricated component to the cover plate prefabricated component are specifically as follows:

[0034] The edge of the second region of the cover plate preform is protruded from the edge of the screen body preform;

[0035] The step of laminating the screen body preform with the cover plate preform is specifically as follows: providing a screen body preform and a module layer preform, and after laminating the module layer preform with the screen body preform, laminating the cover plate preform to a side of the module layer preform away from the screen body preform to form the display module preform;

[0036] Wherein, after the display module preform is cut integrally along a preset cutting line in the second region, a display module having the cover plate, the module layer and the display screen body is formed.

[0037] In the above-mentioned display module manufacturing method, at least the second area of ​​the outer periphery of the cover plate preform is not tempered, at least the second area is relatively soft, and the projection of the cutting line of the integrally cut display module toward the cover plate preform is located in the second area. In this way, the cover plate preform can be designed to expand outward relative to the display screen body so that the cover plate preform completely covers the display screen body to prevent the display screen body from leaking edges. Afterwards, the display module in which the cover plate preform and the display screen body are assembled into a film is integrally cut along the cutting line of the second area. Because the second area of ​​the cover plate preform has not been tempered and has a low hardness, it can be cut smoothly, so that the frame of the display module can be narrowed by integrally cutting the display module to meet the demand for a narrow frame. In this way, the cover plate preform can effectively cover the display screen body to prevent the display screen body from leaking edges, and can also meet the design demand for a narrow frame of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the structure of the display module in some embodiments of the present application;

[0039] Figure 2 It is a schematic diagram of the structure of the display module in some other embodiments of the present application;

[0040] Figure 3 It is a flowchart of a method for manufacturing a display module in one embodiment of the present application;

[0041] Figure 4 This is a schematic diagram of the structure of the cover plate prefabricated parts in some embodiments of the present application;

[0042] Figure 5 This is a schematic diagram of the structure of the screen preform in some embodiments of the present application;

[0043] Figure 6 A schematic diagram showing the structure of module prefabricated parts in some embodiments of the present application;

[0044] Figure 7 This is a schematic diagram showing the structure of module prefabricated parts in other embodiments of the present application.

[0045] Explanation of the accompanying drawings: 200, display module; 100, display module preform; 10, cover plate preform; 11, cover plate; 12, first area; 14, second area; 30, screen body preform; 32, display body; 321, display area; 323, peripheral functional area; 34, cuttable area; 50, module layer preform; 51, module layer; 52, polarizing layer; 54, transparent optical adhesive layer; 60, substrate. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0052] See also Figure 1 , Figure 1 This is a cross-sectional schematic diagram of a display module 200 in some embodiments of the present application. According to some embodiments of the present application, a display module 200 is provided, including a substrate 60, a display screen 32 and a cover plate 11. The display screen 32 is arranged on one side of the substrate 60, and the cover body is arranged on a side of the display screen 32 away from the substrate 60. The orthographic edge of the cover plate 11 on the substrate 60 at least partially overlaps with the orthographic edge of the display screen 32 on the substrate 60.

[0053] That is to say, the cover plate 11 in the display module 200 at least partially overlaps with the orthographic projection edge of the display screen 32 toward the substrate 60, the edge of the display screen 32 is at least partially flush with the edge of the cover plate 11, and at least part of the edge of the cover plate 11 does not protrude from the edge of the display screen 32. In this way, the frame of the display module 200 is narrow, which can meet the demand for a narrow frame of the display module 200 while ensuring that the display screen 32 does not miss the edge.

[0054] Furthermore, the orthographic projection of the cover plate 11 on the substrate 60 is within the orthographic projection range of the display screen 32 on the substrate 60 , that is, the cover plate 11 is not arranged to extend outward relative to the edge of the display screen 32 , so that the overall frame of the display module 200 is narrower.

[0055] like Figure 5 and Figure 7 As shown, the display screen body 32 includes a display area 321 and a peripheral functional area 323, the orthographic projection of the display area 321 on the substrate 60 overlaps with the orthographic projection of the cover plate 11 on the substrate 60, a part of the orthographic projection of the peripheral functional area 323 on the substrate 60 overlaps with the orthographic projection of the cover plate 11 on the substrate 60, and another part of the orthographic projection of the peripheral functional area 323 on the substrate 60 protrudes from the orthographic projection of the cover plate 11 on the substrate 60. In other words, the display area 321 of the display screen body 32 is completely covered by the cover plate 11, a part of the peripheral functional area 323 of the display screen body 32 is covered by the cover plate 11, and another part protrudes from the cover plate 11.

[0056] It can be understood that the peripheral functional area 323 includes a peripheral frame area and a binding structure, the peripheral frame area is arranged around the display area 321, the binding structure is connected to the peripheral frame area and at least partially protrudes from the peripheral frame area, the cover plate 11 is arranged on the display area 321 and the peripheral frame area of ​​the display screen body 32, and the binding structure at least partially protrudes from the edge of the cover plate 11. Generally, the binding structure is a flexible circuit board or a chip-on-chip film, which is used to transmit signals to the display screen body 32 and control the operation of the display screen body 32.

[0057] Furthermore, a portion of the orthographic projection edge of the peripheral functional area 323 on the substrate 60 overlaps with a portion of the orthographic projection edge of the cover plate 11 on the substrate 60, and another portion of the orthographic projection edge of the peripheral functional area 323 on the substrate 60 protrudes from another portion of the orthographic projection edge of the cover plate 11 on the substrate 60. As described above, the peripheral functional area 323 includes a peripheral frame area surrounding the display area 321, and a binding structure connected to the peripheral frame area and at least partially protruding from the peripheral frame area. The cover plate 11 is disposed above the display area 321 and the peripheral frame area of ​​the display screen body 32. The edge of the cover plate 11 is flush with at least a portion of the edge of the peripheral frame area, so that the cover plate 11 does not expand outward relative to the peripheral frame area, thereby meeting the setting requirements of a narrow frame. In addition, the binding structure at least partially protrudes from the edge of the cover plate 11, allowing the binding structure to be bent and assembled.

[0058] like Figure 2 As shown, in some embodiments, the display module 200 further includes a module layer 51, the module layer 51 is located on the side of the display screen 32 facing away from the substrate 60, and the orthographic projection edge of the module layer 51 on the substrate 60 at least partially overlaps with the orthographic projection edge of the display screen 32 on the substrate 60. That is, the module layer 51 is arranged between the display screen 32 and the cover plate 11, the module layer 51 is flush with at least part of the edge of the display screen 32, the module layer 51 at least partially does not expand outward relative to the display screen 32, and the cover plate 11 at least partially does not expand outward relative to the display screen 32, so that the edges of the module layer 51 and the cover plate 11 overlap at least partially with the edges of the display screen 32, so that the overall frame of the display module 200 is narrower, further meeting the design requirements of the narrow frame, and at the same time, the display screen 32 does not leak edges, and the display screen 32 is fully protected.

[0059] Furthermore, the module layer 51 includes a polarizing layer 52 located on the side of the display screen 32 away from the substrate 60 and a transparent optical adhesive layer 54 located on the side of the polarizing layer 52 away from the substrate 60, so that the transparent optical adhesive layer 54 can bond the polarizing layer 52 and the cover plate 11, and the polarizing layer 52 is used to adjust the outgoing light and improve the light output effect.

[0060] See also Figure 3 , Figure 31 is a flow chart of a method for manufacturing a display module 200 in an embodiment of the present application. According to some embodiments of the present application, a method for manufacturing a display module 200 is provided, comprising the following steps:

[0061] Step S100, see Figure 4 , providing a cover plate preform 10, the cover plate preform 10 includes a first area 12 and a second area 14 surrounding the first area 12, at least the second area 14 of the first area 12 and the second area 14 is not tempered. In this way, a cover plate preform 10 is provided, so that at least the second area 14 of the outer periphery of the cover plate preform 10 is not tempered, and at least the second area 14 is relatively soft, so as to facilitate the subsequent integrated cutting of the display module 200.

[0062] Specifically, the cover plate preform 10 needs to at least cover the front of the display module 200 and have good light transmittance. For example, in some embodiments, the cover plate preform 10 can be formed of at least one of sapphire glass and gorilla glass, and in other embodiments, the cover plate preform 10 can also be formed of at least one of polyethylene terephthalate, polycarbonate, polyether sulfone, polynaphthalate, and polynorbornene.

[0063] Step S300, see Figure 5-Figure 6 , a screen preform 30 is provided, and the screen preform 30 and the cover plate preform 10 are bonded to form a display module preform 100, the screen preform 30 includes a display screen 32, and the first area 12 covers at least a portion of the display screen 32, so that the screen preform 30 and the cover plate preform 10 are bonded, and the first area 12 of the cover plate preform 10 covers at least a portion of the display screen 32, so that the display screen 32 is protected by the first area 12. It can be understood that the display screen 32 is arranged with a display structure for a light-emitting display area, and of course, at least a portion of the display screen 32 can emit light.

[0064] According to some embodiments of the present application, a driving device and a display device stacked with the driving device are provided in the display screen body 32, and the driving device is used to input a driving current into the display device to control the display device to emit light. In some embodiments, the display device includes a first electrode, a second electrode and an organic light-emitting layer, the organic light-emitting layer is located between the first electrode and the second electrode, and one of the first electrode and the second electrode is a cathode, and the other of the first electrode and the second electrode is an anode. Specifically, the polarity of the first electrode and the second electrode can be set accordingly as required, which is not limited here. In this way, the organic light-emitting layer is located between the cathode and the anode, and the electrons injected from the cathode and the holes injected from the anode combine with each other in the organic light-emitting layer to form excitons. When the excitons release energy, light is emitted, thereby realizing the display function of the display screen body 32.

[0065] In some embodiments, the step of bonding the screen preform 30 and the cover preform 10 to form the display module preform 100 in step S300 is specifically as follows: the edge of the second area 14 of the cover preform 10 is protruded from the edge of the screen preform 30, so that the cover preform 10 is protruded from the screen preform 30, and the orthographic projection of the screen preform 30 toward the cover preform 10 is completely within the range where the cover preform 10 is located. The cover preform 10 can completely cover the screen preform 30, thereby preventing the screen preform 30 from leaking edges and improving assembly reliability.

[0066] See also Figure 2 and Figure 7 In some embodiments, the step of laminating the screen preform 30 and the cover plate preform 10 to form the display module preform 100 in step S300 is specifically as follows: providing the screen preform 30 and the module layer preform 50, laminating the module layer preform 50 with the screen preform 30, and laminating the cover plate preform 10 to the side of the module layer preform 50 away from the screen preform 30 to form the display module preform 100. That is, other film layers may be provided between the screen preform 30 and the cover plate preform 10, such as providing the module layer preform 50, so as to form the display module preform 100 including the screen preform 30, the module layer preform 50 and the cover plate preform 10 stacked in sequence.

[0067] Specifically, the module layer 51 includes a polarizing layer 52 and a transparent optical adhesive layer 54. The polarizing layer 52 is located between the screen preform 30 and the cover preform 10. The optical adhesive layer is located between the polarizing layer 52 and the cover preform 10. The transparent optical adhesive layer 54 can bond the polarizing layer 52 and the cover 11. The polarizing layer 52 is used to adjust the emitted light and improve the light output effect.

[0068] Optionally, the edge of the module layer preform 50 is arranged to protrude from the edge of the screen preform 30, that is, the module layer preform 50 is arranged to expand outward relative to the screen preform 30, so that the module layer 51 completely covers the screen preform 30, preventing the screen preform 30 from leaking and improving assembly reliability.

[0069] Also optionally, the edge of the second area 14 of the cover plate preform 10 protrudes from the edge of the screen preform 30, and the edge of the module layer preform 50 protrudes from the edge of the screen preform 30, so that the cover plate preform 10 and the module layer preform 50 are both protruded from the edge of the screen preform 30, that is, the screen preform 30 and the module layer preform 50 are both arranged to expand outward relative to the screen preform 30, and the cover plate preform 10 and the module layer 51 can completely cover the screen preform 30, thereby preventing the screen preform 30 from leaking edges, thereby further improving assembly reliability.

[0070] See also Figure 5 and Figure 7According to some embodiments of the present application, the screen preform 30 further includes a cuttable area 34 surrounding the display screen 32. The cuttable area 34 is the peripheral area of ​​the screen preform 30 and can be cut. After being cut, the display function inside the display screen 32 will not be affected. After the cover plate preform 10 is attached to the screen preform 30, the first area 12 of the cover plate preform 10 covers at least part of the display screen 32, and the second area 14 of the cover plate preform 10 covers at least the cuttable area 34 of the screen preform 30. In this way, the second area 14 of the cover plate preform 10 is overlapped with the cuttable area 34 of the screen preform 30. When the display module 200 is cut as one piece later, the area can be cut. During the cutting process, the second area 14 is relatively soft and can be cut more easily. At the same time, the cutting of the cuttable area 34 of the screen preform 30 will not affect the normal display of the display screen 32, allowing the display module 200 to be cut as one piece to narrow the frame.

[0071] It can be understood that in some other embodiments, the projection of the cutting line toward the cover plate preform 10 is located in the second area 14, and the projection toward the plane where the screen body preform 30 is located is located outside the area where the screen body preform 30 is located. During the cutting process, only the portion of the cover plate preform 10 protruding from the screen body preform 30 is cut, and the screen body preform 30 will not be cut, which can also prevent the screen body preform 30 from leaking edges while narrowing the frame of the display module 200. In addition, in this case, the screen body preform 30 includes a display screen 32, and because the screen body preform 30 will not be cut, the screen body preform 30 may include a cuttable area 34, or may not include a cuttable area 34.

[0072] See also Figure 2 and Figure 5-Figure 7 , step S500, the display module preform 100 is cut integrally along the preset cutting line in the second region 14 to form a display module 200 having at least a cover plate 11 and a display screen body 32, and the orthographic projection edge of the cover plate 11 on the display screen body 32 at least partially overlaps with the edge of the display screen body 32. In this way, the cover plate preform 10 can be designed to expand outward relative to the screen body preform 30, so that the cover plate preform 10 completely covers the screen body preform 30 to prevent the screen body preform 30 from leaking. In addition, the display module preform 100 assembled into a film by the cover plate preform 10 and the screen body preform 30 is subsequently cut integrally along the cutting line of the second region 14, because the second region 14 of the cover plate preform 10 is not tempered and has a low hardness, it can be cut smoothly, so that the frame of the display module 200 is narrowed by cutting the display module 200 integrally, so that the edge of the cover plate is at least partially flush with the edge of the display screen body, so that the frame of the display module 200 is narrowed. In this way, the cover plate preform 10 can effectively cover the screen body preform 30 to prevent the screen body preform 30 from leaking edges, and can also meet the design requirements of the narrow frame of the display module 200.

[0073] According to some embodiments of the present application, a display module preform 100 includes a display module preform 100 including a screen body preform 30, a module layer preform 50 and a cover plate preform 10 stacked in sequence. After the display module preform 100 is cut as a whole along a cutting line in a second area, a display module 200 having a cover plate 11, a module layer 51 and a display screen 32 is formed.

[0074] According to some embodiments of the present application, the screen preform 30 further includes a cuttable area 34 surrounding the display screen 32. After the cover plate preform 10 is attached to the screen preform 30, the second area 14 of the cover plate preform 10 at least covers the cuttable area 34 of the screen preform 30. The projection of the preset cutting line toward the screen preform 30 is located in the cuttable area 34, and the projection of the cutting line toward the cover plate preform 10 is located in the second area 14. In this way, the second area 14 on the periphery of the cover plate preform 10 overlaps with the cuttable area 34 on the periphery of the screen preform 30. When the display module 200 is cut along the preset cutting line, the second area 14 is relatively soft and can be cut relatively easily. At the same time, the cutting of the cuttable area 34 of the screen preform 30 will not affect the normal display of the display screen 32, and the display module 200 can be cut as a whole to narrow the frame.

[0075] Further, the display screen body 32 includes a display area 321 and a peripheral functional area 323 surrounding the display area 321, and the cuttable area 34 surrounds the peripheral functional area 323. It can be understood that the display area 321 is provided with a display structure for light-emitting display, the peripheral functional area 323 is used to arrange electronic devices such as wiring, and the cuttable area 34 is arranged around the peripheral functional area 323. Cutting the cuttable area 34 during the cutting process will not affect the electronic devices such as wiring in the peripheral functional area 323, thereby ensuring that the normal display function of the screen body preform 30 is not affected.

[0076] It can be understood that during the cutting process, the display module 200 is cut as one piece by laser.

[0077] According to some embodiments of the present application, step S100 is specifically as follows: the first area 12 and the second area 14 of the cover preform 10 are not tempered, that is, the cover preform 10 as a whole is not tempered, and is glass of ordinary hardness, which is convenient for the subsequent integrated cutting of the display module 200, so that the display module 200 can prevent the screen preform 30 from leaking edges by expanding the cover preform 10 outward, and can also meet the design requirements of the narrow frame of the display module 200.

[0078] According to other embodiments of the present application, step S100 is specifically as follows: the first area 12 of the cover preform 10 is tempered, and the second area 14 is not tempered. In this way, the cover preform 10 is partially tempered, and the first area 12 in the middle is tempered to have a greater hardness, which can more effectively protect the display module 200. The second area 14 on the periphery is not tempered and has a lower hardness, which is convenient for the subsequent integrated cutting of the display module 200, so that the display module 200 can prevent the display screen 32 from leaking edges by expanding the cover preform 10 outward, and can also meet the design requirements of the narrow frame of the display module 200.

[0079] It is understandable that when the first region 12 of the cover plate preform 10 is tempered, the second region 14 can be shielded and not tempered. Specifically, the sodium ions on the outer surface of the second region 14 can be replaced with potassium ions, so that the outer surface of the second region 14 includes more potassium ions with larger diameters, thereby improving the hardness of the second region 14.

[0080] According to some embodiments of the present application, step S500 is followed by step S700.

[0081] Step S700, the hardness of the outer surface of the cover plate preform 10 is increased to form a cover plate, and the hardness of the outer surface of the second region 14 of the cover plate is greater than the hardness of the outer surface of the second region 14 of the cover plate preform 10. This is equivalent to processing the outer surface of the cover plate preform 10 after the display module 200 is cut into one piece, so as to increase the hardness of the outer surface of the cover plate preform 10 and form a cover plate with higher hardness, so as to better protect the display module 200 and prevent a certain area of ​​the cover plate from having insufficient hardness and reducing the protective performance.

[0082] Specifically, at least the second region 14 of the cover plate preform 10 is not tempered and has a low hardness. After the outer surface of the cover plate preform 10 is strengthened, the hardness of the outer surface of the second region 14 of the cover plate preform 10 can be improved, and the outer surface hardness of the second region 14 of the cover plate finally formed is high, which can effectively protect the display module 200. Similarly, if both the first region 12 and the second region 14 of the cover plate preform 10 are not tempered, after the integral cutting is completed, the hardness of the surface of the cover plate preform 10 is improved, and a cover plate with higher hardness can be obtained to effectively protect the display module 200.

[0083] In some embodiments, step S700 is specifically as follows: performing a tempering treatment on the outer surface of the cover preform 10, which is equivalent to first leaving at least the second area 14 of the cover preform 10 untempered, at least making the hardness of the second area 14 lower to facilitate the subsequent integral cutting of the display module 200, and then performing a tempering treatment on the outer surface of the cover preform 10 to increase the hardness of the outer surface of the cover preform 10 to effectively protect the display module 200.

[0084] Specifically, the sodium ions on the outer surface of the cover plate preform 10 can be replaced with potassium ions, so that the outer surface of the cover plate preform 10 includes more potassium ions with larger diameters, thereby increasing the hardness of the outer surface of the cover plate preform 10 and forming a cover plate with a harder outer surface. It can be understood that in some other embodiments, the cover plate preform 10 can also be tempered by a particle tempering method or the like.

[0085] In some embodiments, step S700 is specifically as follows: coating a hardness enhancement layer on the outer surface of the cover plate preform 10, wherein the hardness of the hardness enhancement layer is greater than the hardness of the second region 14. In this way, at least the second region 14 of the cover plate preform 10 is not tempered, and at least the hardness of the second region 14 is low to facilitate subsequent integral cutting of the display module 200, and then a hardness enhancement layer is coated on the outer surface of the cover plate preform 10 to improve the hardness of the outer surface of the cover plate preform 10, so as to effectively protect the display module 200.

[0086] Specifically, at least the second region 14 of the cover plate preform 10 is not tempered and has a low hardness. After the outer surface of the cover plate preform 10 is coated with a hardness enhancement layer, the hardness of the outer surface of the second region 14 of the cover plate preform 10 can be improved, and the outer surface hardness of the second region 14 of the cover plate finally formed is high, which can effectively protect the display module 200. Similarly, if the first region 12 and the second region 14 of the cover plate preform 10 are not tempered, after the integral cutting is completed, the hardness enhancement layer is coated on the outer surface of the cover plate preform 10, so that the outer surface hardness of the first region 12 and the second region 14 of the cover plate preform 10 can be improved, thereby obtaining a cover plate with a high outer surface hardness to effectively protect the display module 200.

[0087] In the above-mentioned display module manufacturing method, at least the second area 14 of the outer periphery of the cover plate preform 10 is not tempered, and at least the second area 14 is relatively soft. And the display module 200 is cut integrally along the preset cutting line in the second area 14. In this way, the cover plate preform 10 can be designed to expand outward relative to the screen body preform 30 so that the cover plate preform 10 completely covers the screen body preform 30 to prevent the screen body preform 30 from leaking. In addition, the display module 200 in which the cover plate preform 10 and the screen body preform 30 are assembled into a film is subsequently cut integrally along the cutting line of the second area 14, because the second area 14 of the cover plate preform 10 is not tempered and has a low hardness, it can be cut smoothly, so that the frame of the display module 200 can be narrowed by cutting the display module 200 integrally to meet the demand for a narrow frame. In this way, the cover plate preform 10 can effectively cover the screen body preform 30 to prevent the screen body preform 30 from leaking edges, and can also meet the design requirements of the narrow frame of the display module 200.

[0088] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A display module, characterized in that: include: substrate; A display screen is arranged on one side of the substrate; A cover plate, arranged on a side of the display screen away from the substrate; Wherein, an orthographic projection edge of the cover plate on the substrate at least partially overlaps with an orthographic projection edge of the display screen on the substrate.

2. The display module according to claim 1, characterized in that: The orthographic projection of the cover plate on the substrate is located within the orthographic projection range of the display screen on the substrate; The display screen includes a display area and a peripheral functional area, the orthographic projection of the display area on the substrate overlaps with the orthographic projection of the cover plate on the substrate, a portion of the orthographic projection of the peripheral functional area on the substrate overlaps with the orthographic projection of the cover plate on the substrate, and another portion of the orthographic projection of the peripheral functional area on the substrate protrudes from the orthographic projection of the cover plate on the substrate; Preferably, a portion of the orthographic projection edge of the peripheral functional area on the substrate overlaps with a portion of the orthographic projection edge of the cover plate on the substrate, and another portion of the orthographic projection edge of the peripheral functional area on the substrate protrudes from another portion of the orthographic projection edge of the cover plate on the substrate.

3. The display module according to claim 1, characterized in that: Also includes: a module layer, the module layer being located on a side of the display screen away from the substrate, wherein an orthographic projection edge of the module layer on the substrate at least partially overlaps with an orthographic projection edge of the display screen on the substrate; Preferably, the module layer includes a polarizing layer located on a side of the display screen away from the substrate and a transparent optical adhesive layer located on a side of the polarizing layer away from the substrate.

4. A method for manufacturing a display module, characterized in that: The following steps are involved: Providing a cover plate prefabricated member, the cover plate prefabricated member comprising a first region and a second region surrounding the first region, wherein at least the second region among the first region and the second region is not tempered; Providing a screen body preform, and bonding the screen body preform and the cover plate preform to form a display module preform 100, wherein the screen body preform includes a display screen body, and the first area covers at least a portion of the display screen body; Integrally cutting the display module preform 100 along a preset cutting line in the second region to form a display module having at least a cover plate and a display screen body; Wherein, the orthographic projection edge of the cover plate on the display screen at least partially overlaps with the edge of the display screen.

5. The display module manufacturing method according to claim 4, characterized in that: The display screen preform comprises a cuttable area surrounding at least one side of the display screen; When the cover plate preform is attached to the display screen preform, the second area at least covers the cuttable area, and the projection of the cutting line toward the display screen preform is located in the cuttable area.

6. The method for manufacturing a display module according to claim 5, characterized in that: The display screen includes a display area and a peripheral functional area surrounding the display area, and the cuttable area surrounds the peripheral functional area; When the cover plate preform is attached to the display screen, the first area covers the display area, or the first area covers the display area and at least a portion of the peripheral functional area; The second area covers the cuttable area and covers an area of ​​the peripheral functional area that is not covered by the first area.

7. The display module manufacturing method according to claim 4, characterized in that: The step of providing the cover plate prefabricated component is specifically as follows: The first region and the second region of the cover plate prefabricated member are not tempered; or The first region of the cover plate preform is tempered, and the second region is not tempered.

8. The method for manufacturing a display module according to any one of claims 4 to 7, characterized in that: After the step of integrally cutting the display module along the preset cutting line, the following steps are also included: The hardness of the outer surface of the cover plate preform is increased to form the cover plate, and the hardness of the outer surface of the second region of the cover plate is greater than the hardness of the outer surface of the second region of the cover plate preform.

9. The display module manufacturing method according to claim 8, characterized in that: The step of increasing the hardness of the outer surface of the cover plate preform is specifically: Performing a tempering treatment on the outer surface of the cover plate prefabricated member; or A hardness enhancement layer is coated on the outer surface of the cover plate preform, and the hardness of the hardness enhancement layer is greater than the hardness of the second region.

10. The method for manufacturing a display module according to any one of claims 4 to 7, characterized in that: The specific steps of bonding the screen body prefabricated component to the cover plate prefabricated component are: The edge of the second region of the cover plate preform is protruded from the edge of the screen body preform; Preferably, the step of laminating the screen body preform with the cover plate preform is specifically as follows: providing a screen body preform and a module layer preform, and after laminating the module layer preform with the screen body preform, laminating the cover plate preform to a side of the module layer preform away from the screen body preform to form the display module preform; Wherein, after the display module preform is cut integrally along a preset cutting line in the second region, a display module having the cover plate, the module layer and the display screen body is formed.

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