Display module, preparation method thereof and electronic device

Abstract

The present disclosure relates to a display module, a preparation method thereof and an electronic device. The display module comprises a display screen, a backlight assembly and a middle frame. The display screen and the middle frame are arranged in a stack. The backlight assembly is arranged on a non-display side of the display screen. The backlight assembly comprises a light guide plate and a light source. The light source is arranged on one side of the light guide plate. The light guide plate has a plurality of light guide regions. A target density value of a light guide point of each light guide region is determined based on an installation gap between the display screen and the middle frame corresponding to the light guide region. In the present disclosure, the installation gap between the display screen and the middle frame is obtained, and the density of the light guide points on the light guide plate in the backlight assembly is adjusted according to the installation gap, so as to adjust the light transmission amount of different light guide regions. The display uniformity of the display screen is improved, and the display effect of the display module is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electronic devices, and in particular to a display module, a preparation method thereof, and an electronic device. BACKGROUND

[0002] In the production process of the screen of the electronic device, the light guide points on the light guide plate in the screen need to be adjusted. Through the adjustment of the light guide points, the display panel of the electronic device can display uniformly and transparently.

[0003] At present, before the screen is assembled, the screen can be adjusted to have a uniform and transparent display effect. However, after the screen is assembled in the electronic device, the screen may not be uniform in thickness due to uneven force, resulting in different light transmittances in different areas of the screen, thereby causing display deviation (such as light leakage), affecting the user experience. SUMMARY

[0004] To overcome the problems in the related art, the present disclosure provides a display module, a preparation method thereof, and an electronic device.

[0005] In a first aspect of the present disclosure, a display module is provided, comprising a display screen, a backlight assembly, and a middle frame, the display screen and the middle frame are arranged in layers, and the backlight assembly is arranged on a non-display side of the display screen.

[0006] The backlight assembly comprises a light guide plate and a light source, the light source is arranged on one side of the light guide plate, and along the light emission direction of the light source, the light guide plate has a plurality of light guide regions.

[0007] The target density value of the light guide points of each light guide region is determined based on the installation gap between the display screen and the middle frame corresponding to the light guide region.

[0008] In some embodiments, the light guide points of each light guide region have a reference density value, the reference density values of the light guide points of the plurality of light guide regions gradually increase along the light emission direction of the light source, and the target density value of the light guide points of each light guide region is determined based on the installation gap between the display screen and the middle frame corresponding to the light guide region and the reference density value of the light guide region.

[0009] In some embodiments, the plurality of light guide regions comprises a first type of light guide region, the installation gap between the display screen and the middle frame corresponding to the first type of light guide region is less than a preset threshold value, and the target density value of the light guide points of the first type of light guide region is the sum of the reference density value and a compensation density value.

[0010] The compensation density value is determined based on the difference between the installation gap and the preset threshold value.

[0011] In some embodiments, the plurality of light guide regions comprises a second type of light guide region, and a mounting gap between the display screen and the middle frame corresponding to the second type of light guide region is greater than or equal to a preset threshold value.

[0012] The target density value of the light guide points of the second type of light guide region is equal to the reference density value.

[0013] In some embodiments, the preset threshold value is 0.275mm-0.285mm.

[0014] According to a second aspect of the present disclosure, a preparation method of a display module is provided, comprising:

[0015] providing a display screen and a middle frame;

[0016] manufacturing a light guide plate, the light guide plate having a plurality of light guide regions, and a target density value of light guide points of each of the light guide regions being determined based on a mounting gap between the display screen and the middle frame corresponding to the light guide region;

[0017] setting a light source on one side of the light guide plate to form a backlight assembly, and assembling the backlight assembly, the display screen and the middle frame to obtain the display module, wherein the display screen and the middle frame are arranged in a stack, and the backlight assembly is arranged on a non-display side of the display screen.

[0018] In some embodiments, the manufacturing of the light guide plate comprises:

[0019] determining a reference density value of the light guide points of the light guide region according to a position of the light guide region relative to the light source;

[0020] determining a target density value of the light guide points of the light guide region according to the mounting gap between the display screen and the middle frame corresponding to the light guide region and the reference density value of the light guide region.

[0021] In some embodiments, the determination of the reference density value of the light guide points of the light guide region comprises:

[0022] multiplying the basic density value and the density parameter of the light guide region to obtain the reference density value of the light guide points of the light guide region.

[0023] In some embodiments, the light guide region with the mounting gap less than the preset threshold value is a first type of light guide region, and the manufacturing of the light guide plate further comprises:

[0024] obtaining a compensation density value based on a basic density value and a difference between the mounting gap and the preset threshold value;

[0025] The sum of the reference density value of the light guide point of the first type light guide region and the compensation density value is used as the target density value of the light guide point of the first type light guide region.

[0026] In some embodiments, the light guide region with the installation gap greater than or equal to the preset threshold value is a second type light guide region, and the manufacturing light guide plate further includes:

[0027] The reference density value of the second type light guide region is used as the target density value of the light guide point of the second type light guide region.

[0028] According to a third aspect of the present disclosure, an electronic device is provided, which includes the display module according to the first aspect or the display module manufactured by the manufacturing method of the display module according to the second aspect.

[0029] The technical solution provided by the embodiments of the present disclosure can have the following beneficial effects: by obtaining the installation gap between the display screen and the middle frame, and adjusting the density of the light guide points on the light guide plate in the backlight assembly according to the installation gap, the light transmittance of different light guide regions is adjusted, the display uniformity of the display screen is improved, and the display effect of the display module is improved.

[0030] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0032] Figure 1 is a schematic diagram of a display module according to an exemplary embodiment.

[0033] Figure 2 is an exploded view of a display module according to an exemplary embodiment.

[0034] Figure 3 is a top view of a display module according to an exemplary embodiment.

[0035] Figure 4 is a flowchart of a manufacturing method of a display module according to an exemplary embodiment.

[0036] Figure 5 is a flowchart of a manufacturing method of a display module according to an exemplary embodiment.

[0037] Figure 6 is a flowchart of a manufacturing method of a display module according to an exemplary embodiment. DETAILED DESCRIPTION

[0038] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements, unless the context clearly dictates otherwise. The following description is not meant to limit the present disclosure to all of the embodiments described herein. Rather, the following description is meant to provide examples of apparatus and methods consistent with the present disclosure as detailed in the following claims.

[0039] In the production process of the screen of the electronic device, the light guide points on the light guide plate in the screen need to be adjusted. By adjusting the light guide points, the display panel of the electronic device can display uniformly and transparently. At present, before the screen is assembled, the screen can be adjusted to have a uniform and transparent display effect.

[0040] However, after the screen is assembled in the electronic device, for example, there is extrusion between the screen and the middle frame of the electronic device, so that the screen is not uniformly stressed and has uneven thickness, resulting in different light transmittance of different areas of the screen, thereby causing display deviation, affecting the display effect of the screen, and affecting the user experience.

[0041] To solve the above technical problems, the present embodiment provides a display module and a preparation method thereof. The target density value of the light guide points in the light guide area is determined based on the installation gap between the display screen and the middle frame corresponding to the light guide area. By obtaining the installation gap between the display screen and the middle frame, the density of the light guide points on the light guide plate in the backlight assembly is adjusted according to the installation gap, so as to adjust the light transmittance of different light guide areas, improve the display uniformity of the display screen, and improve the display effect of the display module.

[0042] The technical solutions of the present embodiment will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the following embodiments and implementation manners can be combined with each other.

[0043] According to an exemplary embodiment of the present disclosure, as shown in Figures 1 to 3 The present embodiment provides a display module 100, which is applied to an electronic device with a graphic display function, such as a smart phone, a tablet computer, a notebook computer, a smart wearable device, etc.

[0044] As shown in Figures 1 to 3 The display module 100 includes a display screen, which can be a liquid crystal display (LCD) for example. The principle of the liquid crystal display is that the liquid crystal can exhibit different optical properties under different voltages.

[0045] The display module 100 also includes a middle frame, which is stacked with the display screen for mounting and fixing the display screen. The middle frame and the display screen can be connected by adhesive bonding. (Reference) Figures 1 to 3 In the stacking direction of the mid-frame and the display screen, there is usually an installation gap between them. This gap prevents damage to the display screen caused by compression when it is subjected to impact. In one example, a buffer can also be placed at the installation gap between the display screen and the mid-frame. This buffer enhances the protection of the display screen and prevents dust and impurities from entering the display screen, thus extending the lifespan of the display module 100. Buffers such as foam offer advantages such as elasticity, light weight, quick pressure-sensitive fixing, ease of use, flexibility, ultra-thinness, and reliable performance.

[0046] The display module 100 also includes a backlight assembly, which is located on the non-display side of the display screen. The backlight assembly can provide backlight to the display screen, and when the backlight light passes through the liquid crystal in the display screen, the backlight light can be converted into different colors according to the different light characteristics of the liquid crystal, such as red, green, blue, and other colors formed by mixing red, green and blue, so that the display screen can display a variety of colors.

[0047] refer to Figures 1 to 3 The backlight assembly includes a light guide plate 10 and a light source 20, which is disposed along one side of the light guide plate 10. Light guide points are provided on the light guide plate 10, and the light guiding direction of the light guide points is (…). Figure 3 The z-direction shown can be parallel to the stacking direction of the display screen and the mid-frame to adjust the light path of the light emitted from the light source 20 toward the display screen. This type of backlight assembly is also known as an edge-lit backlight. The display module 100 using an edge-lit backlight can achieve an extremely thin thickness. Therefore, electronic devices using the display module 100 provided in this embodiment of the present disclosure can achieve an extremely thin overall thickness, improving the overall aesthetics of the electronic device.

[0048] It's important to note that the installation gap between the display and the mid-frame can vary. If the gap is too small, the cushioning material filling it can compress the display, reducing its thickness. A thinner display will transmit more light, leading to excessive light leakage. In one example, when display module 100 displays a black image, areas with smaller gaps may appear gray or white, a phenomenon known as light leakage, negatively impacting the user's viewing experience. Conversely, areas with larger gaps will not compress the display, resulting in normal light transmission. Therefore, varying installation gaps between the display and the mid-frame can easily cause uneven display performance.

[0049] refer to Figures 1 to 3In the display module 100 provided in this embodiment, along the emission direction of the light source 20 ( Figure 3 As shown in the y-direction, the light guide plate 10 of the backlight assembly is divided into multiple light guide regions, and the target density value of the light guide points in each light guide region is determined based on the mounting gap between the display screen and the mid-frame corresponding to the light guide region. For example, when the mounting gap between the display area corresponding to the light guide region and the mid-frame is small, the backlight amount provided by the light guide region of the light guide plate 10 can be reduced by decreasing the density of the light guide points in that display area, thereby offsetting the increase in brightness caused by the thinning of the light guide region.

[0050] In this embodiment of the disclosure, by obtaining the installation gap between the display screen and the middle frame, and adjusting the density of light guide points on the light guide plate in the backlight assembly according to the installation gap, the amount of light transmitted in different light guide areas is adjusted, thereby improving the display uniformity of the display screen and the display effect of the display module.

[0051] In one exemplary embodiment, such as Figures 1 to 3 As shown, this embodiment of the present disclosure provides a display module 100, which includes a display screen, a backlight assembly, and a mid-frame. The backlight assembly includes a light guide plate 10 and a light source 20 disposed on one side of the light guide plate 10. Along the light emission direction of the light source 20, the light guide plate 10 has multiple light guide areas. The target density value of the light guide points in each light guide area is determined based on the installation gap between the display screen and the mid-frame corresponding to that light guide area.

[0052] In this embodiment, reference Figures 1 to 3 Each light guide area has a reference density value for its light guide points. The reference density value can be the density value of the light guide points in each light guide area when the light guide plate 10 is designed. Before the display module 100 is assembled (or when the installation gap between the display screen and the middle frame is large enough), when the density of the light guide points in the light guide area is the reference density value, the backlight provided by the light guide plate 10 to the display screen can make the display screen emit light uniformly.

[0053] refer to Figures 1 to 3 Along the emission direction of light source 20 ( Figure 3 As shown in the y-direction), the reference density values ​​of the light guide points in multiple light guide regions gradually increase. In one example, the reference... Figure 3 Along the light emission direction of the light source 20, the light guide plate 10 can be divided into m=7 light guide regions. Along the light emission direction of the light source 20, the reference density values ​​of the light guide points in multiple light guide regions gradually increase. For example, the reference density value of the first light guide region 11... The density parameter is 1.1. The reference density value for the second light-guiding region 12 is... The density parameter is 1.2. The reference density value for the third light-guiding region 13 is... , the density parameter is 1.3. The reference density value of the fourth light guide area 14 , the density parameter is 1.4. The reference density value of the fifth light guide area 15 , the density parameter is 1.5. The reference density value of the sixth light guide area 16 , the density parameter is 1.6. The reference density value of the seventh light guide area 17 , the density parameter is 1.7.

[0054] It can be determined that, in the above example, when the mth light guide area is a first type light guide area, the density parameter of the mth light guide area is This does not limit the technical solutions of the present disclosure, and in other possible embodiments, the density parameter can be adaptively adjusted according to the use requirements of the display module and the number of light guide areas. For example, if the light guide plate is divided into m = 14 light guide areas, the density parameter can be adaptively adjusted to .

[0055] Referring to Figures 1 to 3 , the light guide points of each light guide area of the light guide plate have a target density value, which can be the density value of the light guide points of each light guide area after the light guide plate is produced and formed. The target density value of the light guide points of each light guide area can be determined based on the mounting gap and the reference density value of the light guide area. For example, when the mounting gap between the display screen and the middle frame corresponding to the first light guide area is small, the density of the light guide points can be adjusted based on the size of the mounting gap and the reference density value of the first light guide area . When the mounting gap between the display screen and the middle frame corresponding to the third light guide area is small, the density of the light guide points can be adjusted based on the size of the mounting gap and the reference density value of the third light guide area .

[0056] As can be seen from the above, when the mounting gap between the display screen and the middle frame is too small, the target density value of the light guide area corresponding to the display screen is lower than the reference density value. It can be understood that reducing the density of the light guide points of the light guide plate can reduce the backlight provided by the light guide plate to the display screen, thereby offsetting the increase in brightness caused by the reduction in the thickness of the display screen, and avoiding the situation that the local area of the display screen has too high brightness.

[0057] In one embodiment, referring to Figures 1 to 3 , the plurality of light guide areas of the light guide plate include a first type light guide area, and the mounting gap between the display screen and the middle frame corresponding to the first type light guide area is less than a preset threshold, that is, the first type light guide area is a light guide area that needs to be adjusted in density.

[0058] In one example, the target density value of the light guide points of the first type light guide region can be the sum of the reference density value and a compensation density value, and the compensation density value can be determined based on the difference between the installation gap and the preset threshold value.

[0059] When setting the reference density value of the light guide points of the plurality of light guide regions, a base density value can be set For reference, the base density value The reference density value of the light guide points of any one of the plurality of light guide regions, the base density value is used to establish the density relationship of the light guide points between the plurality of light guide regions.

[0060] The difference between the installation gap and the preset threshold value is taken as a compensation coefficient, and the compensation density value is obtained based on the product of the base density value and the compensation coefficient, and the calculation formula of the compensation density value can be:

[0061]

[0062] In the above formula, , the base density value; x , the installation gap; y , the preset threshold value. As can be seen from the above formula, the greater the difference between the installation gap and the preset threshold value, the greater the compensation density value. The preset threshold value can be determined based on a force simulation model, and in one example, the preset threshold value can be 0.275mm-0.285mm. The preset threshold value can be adaptively adjusted according to the size and other parameters of the display module and the electronic device.

[0063] The calculation formula of the target density value of the light guide points of the first type light guide region is as follows:

[0064]

[0065] In the above formula, , the reference density value; , the compensation density value; x , the installation gap; y , the preset threshold value. As can be seen from the above formula x-y , the target density value of the light guide points of the first type light guide region is less than the reference density value, that is, in the design method of the light guide plate provided in the embodiments of the present disclosure, when the density of the light guide points of the first type light guide region whose installation gap is less than the preset threshold value is adjusted, the density of the light guide points of the first type light guide region can be reduced, thereby reducing the amount of light emitted by the light source 20 passing through the first type light guide region, thereby offsetting the increase in brightness of the first type light guide region due to the thinning of the thickness, so that the brightness of the first type light guide region and other light guide regions is uniform.

[0066] Wherein, the mth light guide region is the first type light guide region, and the calculation formula of the target density value of the light guide point of the first type light guide region is as follows:

[0067]

[0068] Wherein, the density parameter is For example, and the above formula is simplified, the calculation formula of the target density value of the light guide point of the first type light guide region is as follows:

[0069] In the above formula, , the basic density value; m , the number of the first type light guide region in the plurality of light guide regions; x , the installation gap; y , the preset threshold.

[0070] In another embodiment, referring to Figures 1 to 3 , the plurality of light guide regions of the light guide plate further includes a second type light guide region, and the installation gap between the display screen corresponding to the second type light guide region and the middle frame is greater than or equal to the preset threshold. That is, the second type light guide region is a light guide region that does not need to be adjusted, so that the target density value of the light guide point of the second type light guide region is equal to the reference density value. The calculation formula of the target density value of the light guide point of the second type light guide region is as follows:

[0071]

[0072] In some embodiments, referring to Figure 1 and Figure 2 , the display module 100 can further include a reflective sheet 30, the reflective sheet 30 is arranged at the bottom of the light guide plate 10, and the reflective sheet 30 can be used to improve the backlight intensity provided by the light guide plate 10 to the display screen.

[0073] According to an exemplary embodiment of the present disclosure, as shown in Figure 4 , the present disclosure provides a preparation method of a display module, which can include the following steps:

[0074] Step S100, providing a display screen and a middle frame.

[0075] In this step, the display screen can be a liquid crystal display screen, and the middle frame can be an alloy middle frame or a plastic middle frame.

[0076] In this step, the display screen and the mid-frame can be pre-assembled. That is, the display screen and the mid-frame are stacked but not glued together. In the pre-assembled state, the installation gap between the display screen and the mid-frame can be obtained, so that the density of the light guide points on the light guide plate can be adjusted according to the installation gap during the subsequent manufacturing process of the light guide plate. The installation gap can be measured using tools that can measure length, such as distance sensors or rulers.

[0077] Step S200: Fabricate a light guide plate. The light guide plate has multiple light guiding areas. The target density value of the light guiding points in each light guiding area is determined based on the installation gap between the display screen and the middle frame corresponding to that light guiding area.

[0078] In this step, refer to Figures 1 to 3 Along the direction of light emission from light source 20 ( Figure 3 As shown in the y-direction, the light guide plate 20 can be divided into multiple sequentially arranged light guide areas. In this embodiment, the number of light guide areas is not limited; for example, it can be 5, 6, 7, 8, etc. Furthermore, in this embodiment, the size of each light guide area is not specified. Figure 3 The y-direction shown in the figure is used to limit the size of multiple light guide areas, which can be the same or different.

[0079] In one example, such as Figures 1 to 3 As shown, each light guide area is rectangular, and the width direction of the light guide area ( Figure 3 The x-direction shown is parallel to the width direction of the display module 100 and the electronic device, and the length direction of the light guide region is parallel to the width direction of the display module 100 and the electronic device. Figure 3 The y-direction shown is parallel to the length direction of the display module 100 and the electronic device.

[0080] The target density value for each light guide area is determined based on the installation gap between the display screen and the mid-frame corresponding to that light guide area. By adjusting the density of the light guide points in multiple light guide areas, the amount of backlight provided by the light guide plate to different areas of the display screen can be adjusted to compensate for the uneven brightness caused by the different thicknesses of the display screen, thereby improving the display uniformity.

[0081] Step S300: Place the light source on one side of the light guide plate to form a backlight assembly, and assemble the backlight assembly, the display screen and the middle frame to obtain a display module, wherein the display screen and the middle frame are stacked, and the backlight assembly is placed on the non-display side of the display screen.

[0082] In this step, the display screen and the mid-frame can be stacked and glued together, and the backlight assembly can be placed on the non-display side of the display screen to obtain a display module.

[0083] refer to Figures 1 to 3, a schematic diagram of a display module 100 is shown, in the assembled state, the light source 20 of the display module 100 is arranged at one side of the light guide plate 10, the light source 20 is arranged to emit light towards the light guide plate 10, that is, the light emission direction of the light source 20 is Figure 3 the y direction shown in the figure, the top surface of the light guide plate 10 is provided with a light guide point (for reference Figure 1 ), the light emitted by the light source 20 can be transmitted to the display panel (not shown in the figure) of the display module 100 through the light guide point of the light guide plate 10, so that the display screen can display image information.

[0084] In the embodiment of the present disclosure, by acquiring the installation gap between the display screen and the middle frame, and adjusting the density of the light guide point on the light guide plate in the backlight assembly according to the installation gap, the light transmission amount of different light guide regions is adjusted, the display uniformity of the display screen is improved, and the display effect of the display module is improved.

[0085] In one example embodiment, referring to Figure 5 , the present embodiment is a further description of step S102 in the above embodiment, and step S102, manufacturing the light guide plate, can include the following steps:

[0086] Step S210, according to the position of the light guide region relative to the light source, determining the reference density value of the light guide point of the light guide region.

[0087] In one example, the reference density value can be determined in the following way: taking the product of the basic density value and the density parameter of the light guide region as the reference density value of the light guide point of the light guide region.

[0088] Step S220, according to the installation gap between the display screen and the middle frame corresponding to the light guide region and the reference density value of the light guide region, determining the target density value of the light guide point of the light guide region.

[0089] Referring to Figure 6 , in one embodiment, when the installation gap between the display screen and the middle frame corresponding to the light guide region is less than a preset threshold, the light guide region is a first type light guide region, and manufacturing the light guide plate can further include the following steps:

[0090] Step S211, obtaining a compensation density value based on the basic density value and the difference between the installation gap and the preset threshold.

[0091] Step S212, the sum of the reference density value and the compensation density value of the light guide point of the first type light guide region is taken as the target density value of the light guide point of the first type light guide region.

[0092] Step S211 and step S212 have been described on the device side, and will not be described here.

[0093] In another embodiment, when the installation gap between the display screen corresponding to the light guide area and the middle frame is greater than or equal to a preset threshold, the light guide area is a second type light guide area, and the manufacturing of the light guide plate can further include the following steps:

[0094] In step S213, the reference density value of the second type light guide area is taken as the target density value of the light guide point of the second type light guide area.

[0095] Step S213 has been described on the device side, and will not be repeated here.

[0096] According to the exemplary embodiments of the present disclosure, the embodiments of the present disclosure provide an electronic device, which includes the display module 100 provided by any of the above embodiments of the present disclosure.

[0097] The electronic device using the display module 100 provided by the embodiments of the present disclosure has uniform display in each area of the display screen, and since the display module is a side-in backlight, the electronic device can have a very thin body and a higher aesthetic degree.

[0098] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the specification and the practice of the embodiments disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including modifications and equivalents of the present disclosure that are obvious to those skilled in the art. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0099] It should be understood that the present disclosure is not limited to the precise structures described and shown in the drawings, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A display module, characterized in that, It includes a display screen, a backlight assembly, and a mid-frame, wherein the display screen and the mid-frame are stacked together, and the backlight assembly is disposed on the non-display side of the display screen; The backlight assembly includes a light guide plate and a light source. The light source is disposed on one side of the light guide plate. Along the light emission direction of the light source, the light guide plate has multiple light guiding areas. Each light guide point in the light guide region has a reference density value, and the target density value of the light guide point in each light guide region is determined based on the installation gap between the display screen and the middle frame corresponding to the light guide region and the reference density value of the light guide region. The plurality of light guide areas include a first type of light guide area, wherein the installation gap between the display screen and the middle frame corresponding to the first type of light guide area is less than a preset threshold, and the target density value of the light guide point of the first type of light guide area is the sum of the reference density value and the compensation density value; The compensation density value is determined based on the difference between the installation gap and the preset threshold.

2. The display module according to claim 1, characterized in that, Along the light emission direction of the light source, the reference density value of the light guiding points in the plurality of light guiding regions gradually increases.

3. The display module according to claim 2, characterized in that, The plurality of light guide areas include a second type of light guide area, wherein the installation gap between the display screen and the middle frame corresponding to the second type of light guide area is greater than or equal to a preset threshold. Wherein, the target density value of the light guide points in the second type of light guide region is equal to the reference density value.

4. The display module according to claim 1 or 3, characterized in that, The preset threshold is 0.275mm to 0.285mm.

5. A method for manufacturing a display module, characterized in that, include: Provides display and mid-frame; A light guide plate is manufactured, the light guide plate having multiple light guide areas, each light guide point in the light guide area having a reference density value, and the target density value of the light guide point in each light guide area being determined based on the installation gap between the display screen and the middle frame corresponding to the light guide area and the reference density value of the light guide area. The plurality of light guide areas include a first type of light guide area, wherein the installation gap between the display screen and the middle frame corresponding to the first type of light guide area is less than a preset threshold, and the target density value of the light guide points in the first type of light guide area is the sum of the reference density value and the compensation density value; wherein the compensation density value is determined based on the difference between the installation gap and the preset threshold. A backlight assembly is formed by placing a light source on one side of the light guide plate. The backlight assembly, the display screen, and the middle frame are assembled to obtain the display module, wherein the display screen and the middle frame are stacked, and the backlight assembly is placed on the non-display side of the display screen.

6. The method for manufacturing a display module according to claim 5, characterized in that, The fabrication of the light guide plate includes: The reference density value of the light guide points in the light guide area is determined based on the position of the light guide area relative to the light source.

7. The method for preparing a display module according to claim 6, characterized in that, Determining the reference density value of the light guide points in the light guide region includes: The product of the base density value and the density parameter of the light-guiding region is used as the reference density value of the light-guiding point in the light-guiding region.

8. The method for preparing a display module according to claim 6 or 7, characterized in that, The light-guiding area with an installation gap greater than or equal to a preset threshold is a second type of light-guiding area. The fabrication of the light-guiding plate further includes: The reference density value of the second type of light guide region is used as the target density value of the light guide point in the second type of light guide region.

9. An electronic device, characterized in that, This includes the display module as described in any one of claims 1-4, or the display module prepared by the method for preparing the display module as described in any one of claims 5-8.

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