Mobile phone screen module

Abstract

The utility model discloses a kind of mobile phone screen module, it is related to screen module technical field, including outer screen, inner screen and the OCA glue layer being set between outer screen and inner screen, the inner screen is attached on the back of outer screen by OCA glue layer;Along the outer screen back periphery is equipped with stepped groove, the stepped groove includes the first step groove and the second step groove being connected, the first step groove is close to outer screen edge position, the second step groove is set in the first step groove inside, silk printing layer is equipped in the second step groove, to form the silk printing frame acting on outer screen by silk printing layer, wherein, the OCA glue layer is attached on the back of silk printing layer, the surface of first step groove and the back of outer screen located outside stepped groove;Effectively protect the silk printing layer, reduce its abrasion, cracking risk due to external force impact to some extent, to guarantee the integrity of silk printing frame and the long-term reliability of screen.

Description

Technical Field

[0001] This utility model relates to the field of screen module technology, specifically a mobile phone screen module. Background Technology

[0002] In the field of mobile phone screen module technology, users are constantly increasing their requirements for the structural stability, appearance refinement and assembly reliability of screen bezels. The detailed processing of bezel design directly affects the market competitiveness of products.

[0003] The patent document with announcement number CN221487771U discloses a mobile phone screen module that uses a structure to form a screened border by setting a groove on the periphery of the back of the outer screen and arranging a screened layer therein. The dynamic color-changing effect is achieved through the internal structure of the screened layer, which has certain advantages in terms of appearance diversity.

[0004] However, this existing technology has room for structural design optimization: when the edge of the phone is impacted by external forces such as collisions, the outer screen, as the outermost layer, bears the brunt of the impact, and the force is transmitted inward through the OCA adhesive layer. Because the connection between the inner screen perimeter and the inner side of the outer screen is not completely rigid, the inner perimeter of the outer screen (including the silkscreen layer area) will be subjected to tensile and torsional stress. However, the current solution does not provide specific protection for the silkscreen layer, which is prone to wear and cracking due to stress, affecting the integrity of the bezel and the appearance of the screen.

[0005] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] A mobile phone screen module includes an outer screen, an inner screen, and an OCA adhesive layer disposed between the outer screen and the inner screen. The inner screen is attached to the back of the outer screen via the OCA adhesive layer.

[0008] A stepped groove is provided along the periphery of the back of the outer screen. The stepped groove includes a first stepped groove and a second stepped groove connected together. The first stepped groove is located near the edge of the outer screen, and the second stepped groove is located inside the first stepped groove. A silkscreen layer is provided in the second stepped groove to form a silkscreen border acting on the outer screen. The OCA adhesive layer is attached to the back of the silkscreen layer, the surface of the first stepped groove, and the back of the outer screen outside the stepped groove.

[0009] As a further embodiment of this utility model: the depth of the second groove is greater than the depth of the first groove, and the thickness of the screen printing layer is adapted to the depth of the second groove, so that the surface of the screen printing layer away from the outer screen is flush with the bottom surface of the first groove.

[0010] As a further embodiment of this utility model: the OCA adhesive layer forms a first thickness in the back area of ​​the outer screen outside the stepped groove, and forms a second thickness in the area covering the surface of the first stepped groove and the back area of ​​the silkscreen layer, wherein the second thickness is greater than the first thickness.

[0011] As a further embodiment of this utility model: the difference between the second thickness and the first thickness of the OCA adhesive layer is equal to the depth of the first groove;

[0012] The OCA adhesive layer forms a continuous and flat bonding surface when covering the back area of ​​the outer screen outside the stepped groove, the surface of the first groove, and the back of the screen printing layer.

[0013] As a further embodiment of this utility model: a transition wall is provided between the first groove and the second groove, the transition wall is perpendicular to the back of the outer screen, and the outer edge of the silkscreen layer is attached to the transition wall.

[0014] As a further embodiment of this utility model: the surface of the outer screen is coated with an anti-glare coating.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] When the edge of the phone is subjected to minor bumps or knocks, the impact force generated by the outer screen is transmitted inward through the OCA adhesive layer. During this process, the stepped groove structure and the thickness design of the OCA adhesive layer work together to buffer the impact: First, the presence of the first groove extends the impact force transmission path and disperses stress concentration points; second, the thickened design of the OCA adhesive layer in the first groove and silkscreen layer areas enhances the elastic deformation capability of these areas; when impacted, the thickened part of the OCA adhesive layer can absorb and dissipate energy through greater elastic compression, further reducing the stress level transmitted to the silkscreen layer; this dual buffering mechanism effectively protects the silkscreen layer, reducing the risk of wear and cracking due to external impacts to a certain extent, thereby ensuring the integrity of the silkscreen bezel and the long-term reliability of the screen.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the inner and outer screen structures in this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the outer screen in this utility model;

[0021] Figure 3 This is a schematic diagram of the hierarchical distribution structure of this utility model.

[0022] The reference numerals and names in the figure are as follows:

[0023] 1. Outer screen; 2. Inner screen; 3. OCA adhesive layer; 4. First groove; 5. Second groove; 6. Silk screen layer; 7. Transition wall surface; 8. Anti-glare coating. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-3 In this embodiment of the present invention, a mobile phone screen module includes an outer screen 1, an inner screen 2, and an OCA adhesive layer 3 disposed between the two. The inner screen 2 is attached to the back of the outer screen 1 via the OCA adhesive layer 3. A stepped groove is provided along the periphery of the back of the outer screen 1. The stepped groove is composed of a first stepped groove 4 and a second stepped groove 5 connected together. The first stepped groove 4 is close to the edge of the outer screen 1, and the second stepped groove 5 is located inside the first stepped groove 4. A silkscreen layer 6 is provided in the second stepped groove 5 to form a silkscreen border acting on the outer screen 1. The OCA adhesive layer 3 covers the back of the silkscreen layer 6, the surface of the first stepped groove 4, and the back area of ​​the outer screen 1 outside the stepped groove.

[0026] In terms of structural adaptation, the depth of the second groove 5 is greater than that of the first groove 4, and the thickness of the silkscreen layer 6 is adapted to the depth of the second groove 5. This adaptation ensures that the surface of the silkscreen layer 6 away from the outer screen 1 (i.e., the back side of the silkscreen layer 6) is on the same plane as the bottom surface of the first groove 4, forming a continuous support interface. Due to the stepped height difference on the back of the outer screen 1, which gradually decreases from the area outside the stepped groove to the first groove 4 and then to the second groove 5, the OCA adhesive layer 3 needs to achieve a flat fit through a differentiated thickness design. Specifically, the OCA adhesive layer 3 forms a first thickness when covering the back area of ​​the outer screen 1 outside the stepped groove, and a second thickness when covering the surface of the first groove 4 and the back area of ​​the silkscreen layer 6. The difference between the second thickness and the first thickness is exactly or approximately equal to the depth of the first groove 4. This thickness compensation ensures that the upper surface of the OCA adhesive layer 3 (i.e., the bonding surface with the inner screen 2) remains continuously flat when crossing different areas. Through this design, the OCA adhesive layer 3 can effectively fill the height difference caused by the stepped groove, ensuring that the bonding surfaces of the inner screen 2 and the outer screen 1 are evenly stressed, and avoiding the risk of bubble formation or delamination caused by local stress concentration.

[0027] A transition wall 7, perpendicular to the back of the outer screen 1, is provided between the first groove 4 and the second groove 5, and the outer edge of the silkscreen layer 6 is tightly fitted to this transition wall 7. This structural design not only enhances the installation stability of the silkscreen layer 6 but also forms a physical protective barrier for it. When external force acts on the edge of the outer screen 1, the transition wall 7 can prevent the impact force from being directly transmitted to the silkscreen layer 6, reducing the possibility of damage to the edge of the silkscreen layer 6 to a certain extent. The surface of the outer screen 1 is coated with an anti-glare coating 8, which can scatter reflected light from multiple angles, reducing the brightness and allowing us to see the content on the screen clearly.

[0028] When the edge of the phone is subjected to minor bumps or knocks, the impact force generated by the outer screen 1 is transmitted inward through the OCA adhesive layer 3. During this process, the stepped groove structure and the thickness design of the OCA adhesive layer 3 work together to provide cushioning. First, the presence of the first groove 4 extends the impact force transmission path and disperses stress concentration points. Second, the thickened design of the OCA adhesive layer 3 in the area of ​​the first groove 4 and the silkscreen layer 6 enhances the elastic deformation capability of this area. When impacted, the thickened portion of the OCA adhesive layer 3 can absorb and dissipate energy through greater elastic compression, further reducing the stress level transmitted to the silkscreen layer 6. This dual cushioning mechanism effectively protects the silkscreen layer 6, reducing the risk of wear and cracking due to external impacts, thereby ensuring the integrity of the silkscreen bezel and the long-term reliability of the screen.

[0029] It should be explained that the constraint of light at the edge of the inner screen 2 is mainly achieved by the silkscreen layer 6 within the second groove 5. The silkscreen layer 6 is positioned along the outer periphery of the display area of ​​the inner screen 2, directly blocking direct light from the edge of the inner screen 2 from diffusing to the outer screen 1, forming the main light-shielding barrier. Specifically, after being blocked by the silkscreen layer 6 of the second groove 5, the light reaching the area of ​​the first groove 4 is extremely weak. Simultaneously, the surface of the first groove 4 is completely covered by the OCA adhesive layer 3, which is tightly bonded to the outer screen 1 and the inner screen 2, eliminating any potential air gaps in this area—air gaps are often the main cause of light refraction and leakage. The physical structure of the edge of the outer screen 1 itself also naturally blocks light, making it difficult for even a small amount of light reaching the area of ​​the first groove 4 to penetrate the edge of the outer screen 1. Furthermore, the uniform coverage of the OCA adhesive layer 3 ensures the optical continuity of the area of ​​the first groove 4, avoiding light scattering caused by structural gaps, and forms a hierarchical cooperation with the silkscreen layer 6 of the second groove 5 to jointly achieve light constraint at the screen edge.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A mobile phone screen module, comprising an outer screen, an inner screen, and an OCA adhesive layer disposed between the outer screen and the inner screen, wherein the inner screen is bonded to the back of the outer screen via the OCA adhesive layer, characterized in that, A stepped groove is provided along the periphery of the back of the outer screen. The stepped groove includes a first stepped groove and a second stepped groove connected together. The first stepped groove is located near the edge of the outer screen, and the second stepped groove is located inside the first stepped groove. A silkscreen layer is provided in the second stepped groove to form a silkscreen border acting on the outer screen. The OCA adhesive layer is attached to the back of the silkscreen layer, the surface of the first stepped groove, and the back of the outer screen outside the stepped groove.

2. The mobile phone screen module of claim 1, wherein, The depth of the second groove is greater than the depth of the first groove. The thickness of the screen printing layer is adapted to the depth of the second groove, so that the surface of the screen printing layer away from the outer screen is flush with the bottom surface of the first groove.

3. The mobile phone screen module of claim 2, wherein, The OCA adhesive layer forms a first thickness in the back area of ​​the outer screen outside the stepped groove, and a second thickness in the area covering the surface of the first stepped groove and the back area of ​​the silkscreen layer, wherein the second thickness is greater than the first thickness.

4. The mobile phone screen module of claim 3, wherein, The difference between the second thickness and the first thickness of the OCA adhesive layer is equal to the depth of the first groove. The OCA adhesive layer forms a continuous and flat bonding surface when covering the back area of ​​the outer screen outside the stepped groove, the surface of the first groove, and the back of the screen printing layer.

5. A mobile phone screen module according to claim 2, characterized in that, A transition wall is provided between the first and second grooves. The transition wall is perpendicular to the back of the outer screen, and the outer edge of the silkscreen layer is attached to the transition wall.

6. A mobile phone screen module according to claim 1, characterized in that, The surface of the outer screen is coated with an anti-glare coating.

Images