Blind hole protective film structure

Abstract

The utility model discloses a blind hole protective film structure, which comprises a protective film, the protective film is pasted at a blind hole on a display module, the lower surface of the protective film is fixedly connected with a non-viscous sheet, the non-viscous sheet is positioned in the blind hole and is used for isolating the viscosity of the protective film, hot melt adhesive is arranged in the blind hole, and the hot melt adhesive is arranged in the blind hole. When the protective film is adhered to the blind hole of the display module, the edge of the blind hole is prevented from leaking light through the hot melt adhesive. According to the blind hole protective film structure provided by the utility model, the non-adhesive sheet with the non-adhesive surface is additionally arranged on the protective film, and the appearance of the non-adhesive sheet is smaller than that of the blind hole area on the lower polaroid, so that after the protective film is attached, the non-adhesive sheet is arranged in the blind hole area, and the upper end of the blind hole area is isolated by the non-adhesive sheet; even if the surface of the protective film is pressed, the glue cannot be transferred to the lower glass of the display module, so that the phenomenon that the glue is transferred to the lower glass to cause contamination is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of camera hole protection, in particular to a blind hole protective film structure. Background Art

[0002] At present, smart phones are very popular, and more and more people like to use the mobile phone camera to record their lives. Therefore, people have higher and higher requirements for the photo-taking and video-recording effects of the mobile phone camera. In the manufacturing process of the liquid crystal display screen of the mobile phone module, there are generally through-hole screens and blind-hole screens. The through-hole screen is to directly punch a hole under the protective glass of the screen, that is, on the display screen, so that the front camera passes through the liquid crystal layer and the backlight module is embedded in the hole, while the blind-hole screen retains the protective glass layer and the liquid crystal display panel on the screen, and only punches a hole in the lower polarizer at the bottom layer to form a blind hole.

[0003] When the existing liquid crystal display screen is fully adhered in the blind hole area, as Figure 1 shown in the structure, hot melt adhesive is first dotted around the opening of the blind hole 112 of the liquid crystal display screen 111 to prevent light leakage at the opening edge from affecting the use of the camera. After dotting the hot melt adhesive, a protective film 113 is attached to the opening of the blind hole 112. However, the surface of the traditional protective film 113 has glue. If the surface of the protective film 113 at the opening is pressed, the glue may be transferred to the lower glass surface of the liquid crystal display screen 111, resulting in contamination and affecting the product use. Summary of the Utility Model

[0004] Based on this, in view of the above technical problems, it is necessary to provide a blind hole protective film structure. By adding a non-adhesive sheet without stickiness on the protective film, the shape of the non-adhesive sheet is smaller than the blind hole area on the lower polarizer. After the protective film is attached, this non-adhesive sheet is within the blind hole area, and the upper end of the blind hole area is isolated by the non-adhesive sheet to achieve non-adhesiveness. Even if the surface of the protective film is pressed, only the non-adhesive sheet will contact the lower glass, and the glue cannot be transferred to the lower glass of the display module, thus effectively avoiding the contamination caused by the glue transfer to the lower glass.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A blind hole protective film structure, comprising:

[0007] A protective film, the protective film is pasted at the blind hole on the display module, a non-adhesive sheet is fixedly connected to the lower surface of the protective film, the non-adhesive sheet is located inside the blind hole, the non-adhesive sheet is used to isolate the stickiness of the protective film, and hot melt adhesive is arranged in the blind hole. When the protective film is pasted at the blind hole on the display module, the edge of the blind hole is prevented from leaking light through the hot melt adhesive.

[0008] Further, one end of the protective film is upturned to form a tearing position.

[0009] Further, a half-cut breaking line is provided on the protective film, and one end of the protective film warps upward from the half-cut breaking line.

[0010] Further, the non-adhesive sheet is made of PET material, and the diameter of the non-adhesive sheet is smaller than the diameter of the blind hole.

[0011] Further, the non-adhesive sheet is transparent, and the color of the non-adhesive sheet is different from that of the protective film.

[0012] Further, the display module includes a cover plate, a bonding adhesive, an upper polarizer, an upper glass sheet, a lower glass sheet, and a lower polarizer which are connected in sequence, and the blind hole is formed on the lower polarizer.

[0013] Further, the thickness of the non-adhesive sheet is 0.01 - 0.2 mm.

[0014] Further, the thickness of the non-adhesive sheet is smaller than the thickness of the lower polarizer.

[0015] Further, the diameter of the non-adhesive sheet is 2 / 3 of the diameter of the blind hole, and the non-adhesive sheet is in a rectangular structure.

[0016] Further, the protective film includes a transparent layer and an adhesive layer, a non-adhesive area is provided in the middle of the adhesive layer, and the non-adhesive sheet is bonded and fixed to the non-adhesive area through glue.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] For the blind hole protective film structure provided by the present utility model, by adding a non-adhesive sheet without stickiness on the surface of the protective film, the outer shape of the non-adhesive sheet is smaller than the blind hole area on the lower polarizer. After the protective film is attached, this non-adhesive sheet is within the blind hole area, and the upper end of the blind hole area is isolated by the non-adhesive sheet to achieve non-stickiness. Even if the surface of the protective film is pressed, only the non-adhesive sheet will contact the lower glass sheet, and the glue cannot be transferred to the lower glass sheet of the display module, thus effectively avoiding the contamination caused by the glue transfer to the lower glass sheet.

[0019] For the blind hole protective film structure provided by the present utility model, by providing a half-cut breaking line on the protective film, the tearing position of the protective film can be slightly warped to facilitate tearing off the protective film. And the non-adhesive sheet is transparent, and the color of the non-adhesive sheet is different from that of the protective film, so that the appearance of the non-adhesive sheet made of PET material has a color, so as to recognize the area of the non-adhesive sheet from the surface of the protective film, which is convenient for alignment during attachment and prevents misalignment. At the same time, since the thickness of the non-adhesive sheet is smaller than the thickness of the lower polarizer, it can prevent the protrusion of the non-adhesive sheet position after attachment from causing the protective film to fall off, and the use effect is better. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of an existing blind hole protective film;

[0021] Figure 2 It is a schematic structural diagram of the blind hole protective film provided by the present utility model pasted with a display module;

[0022] Figure 3 It is a schematic structural diagram of the blind hole protective film provided by the present utility model;

[0023] Figure 4 It is a schematic cross-sectional structural diagram of the blind hole protective film provided by the present utility model pasted with a display module;

[0024] Figure 5 It is a schematic cross-sectional structural diagram of the protective film provided by the present utility model.

[0025] The markings in the figure are explained as follows:

[0026] 1. Display module; 2. Blind hole; 3. Hot melt adhesive; 4. Protective film; 5. Non-adhesive sheet; 6. Tear handle position; 7. Half-cut break line; 101. Cover plate; 102. Bonding adhesive; 103. Upper polarizer; 104. Upper glass sheet; 105. Lower glass sheet; 106. Lower polarizer; 401. Transparent layer; 402. Adhesive layer; 403. Non-adhesive area. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] As described in the background art, when the existing liquid crystal display screen is fully pasted in the blind hole area, since there is glue on the surface of the traditional protective film, if the surface of the protective film at the opening is pressed, the glue may be transferred to the lower glass surface of the liquid crystal display screen, resulting in contamination and affecting the use of the product.

[0029] To solve this technical problem, the present utility model provides a blind hole protective film structure. By adding a non-adhesive sheet without stickiness on the surface of the protective film, it effectively avoids the glue transfer to the lower glass sheet, resulting in contamination defects.

[0030] Specifically, please refer to Figures 2 - 5 , the blind hole protective film structure specifically includes:

[0031] Display module 1 has a blind hole 2. A hot melt adhesive 3 is provided in the blind hole 2, and the hot melt adhesive 3 is used to prevent light leakage at the edge of the blind hole 2.

[0032] A protective film 4 is pasted at the blind hole 2 on the display module 1. A non - sticky sheet 5 is fixedly connected to the lower surface of the protective film 4. The non - sticky sheet 5 is located inside the blind hole 2. The non - sticky sheet 5 is used to isolate the stickiness of the protective film 4, effectively avoiding the transfer of the glue on the protective film 4 into the blind hole 2 on the display module 1, resulting in contamination defects. The non - sticky sheet 5 is in the shape of a boss, which can limit the position of the protective film 4 during pasting, enabling the protective film 4 to be quickly attached to the display module 1 without spending a lot of effort adjusting the position of the protective film 4.

[0033] The blind - hole protective film structure provided by the present utility model, when in use, the protective film 4 is attached to the blind hole 2 of the mobile phone display module 1, and the non - adhesive and transparent non - sticky sheet 5 covers the camera hole, thereby protecting the camera hole from being contaminated. By adding a non - sticky sheet 5 without stickiness on the surface of the protective film 4, the shape of the non - sticky sheet 5 is smaller than the area of the blind hole 2 on the lower polarizer 106. After the protective film 4 is attached, this non - sticky sheet 5 is within the area of the blind hole 2, and the upper end of the area of the blind hole 2 is isolated by the non - sticky sheet 5, achieving non - stickiness. Even if the surface of the protective film 4 is pressed, only the non - sticky sheet 5 will contact the lower glass 105, and the glue cannot be transferred to the lower glass 105 of the display module 1, thus effectively avoiding the contamination defect caused by the transfer of the glue to the lower glass 105. The non - sticky sheet 5 is transparent, and the color of the non - sticky sheet 5 is different from that of the protective film 4. This can make the appearance of the non - sticky sheet 5 made of PET material have a color, so that the area of the non - sticky sheet 5 can be recognized from the side of the protective film 4, facilitating alignment during pasting and preventing misalignment. At the same time, since the thickness of the non - sticky sheet 5 is less than the thickness of the lower polarizer 106, it can prevent the protrusion of the non - sticky sheet 5 after pasting, causing the protective film 4 to fall off, and the use effect is better.

[0034] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0035] It should be noted that, without conflict, the embodiments and the features and technical solutions in the embodiments of the present utility model can be combined with each other.

[0036] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] Please refer to Figures 2 - 5A blind hole protective film structure includes a display module 1, a blind hole 2 is formed on the display module 1, a hot melt adhesive 3 is arranged in the blind hole 2, and the hot melt adhesive 3 is used to prevent light leakage from the edge of the blind hole 2;

[0038] The protective film 4 is pasted on the blind hole 2 on the display module 1. The lower surface of the protective film 4 is fixedly connected with a non-sticky sheet 5. The non-sticky sheet 5 is located inside the blind hole 2. The non-sticky sheet 5 is used to isolate the stickiness of the protective film 4, effectively preventing the glue on the protective film 4 from being transferred to the blind hole 2 on the display module 1 to cause contamination. The non-sticky sheet 5 is in a protrusion shape, which can limit the protective film 4 when pasting, so that the protective film 4 can be quickly attached to the display module 1 without spending a lot of effort to adjust the position of the protective film 4.

[0039] Please refer to Figures 2 - 5 When in use, the protective film 4 is attached to the blind hole 2 of the mobile phone display module 1, and the camera hole is covered with a non-glue and transparent non-sticky sheet 5, so as to protect the camera hole from being polluted. By adding a non-sticky sheet 5 with a non-sticky surface on the protective film 4, the shape of the non-sticky sheet 5 is smaller than the blind hole 2 area on the lower polarizer 106. After the protective film 4 is attached, the non-sticky sheet 5 is in the area of ​​the blind hole 2, and the upper end of the area of ​​the blind hole 2 is isolated by the non-sticky sheet 5 to achieve non-stickiness. Even if the surface of the protective film 4 is pressed, only the non-sticky sheet 5 will contact the lower glass 105, and the glue cannot be transferred to the lower glass 105 of the display module 1, thereby effectively avoiding the glue from being transferred to the lower glass 105 to cause contamination. In addition, since the protective film 4 is provided with a semi-breaking line 7, the tearing position 6 of the protective film 4 can be slightly tilted, which is convenient for tearing off the protective film 4. The non-adhesive sheet 5 is transparent, and the color of the non-adhesive sheet 5 is different from that of the protective film 4. In this way, the appearance of the non-adhesive sheet 5 made of PET material can be colored, so that the area of ​​the non-adhesive sheet 5 can be identified from the surface of the protective film 4, which is convenient for alignment during attachment to prevent deviation. At the same time, since the thickness of the non-adhesive sheet 5 is less than the thickness of the lower polarizer 106, the bulge of the non-adhesive sheet 5 after attachment can be prevented from causing the protective film 4 to fall off, and the use effect is better.

[0040] The blind hole protection film structure provided in Example 1 is further optimized. Specifically, Figure 3 and Figure 4 As shown, one end of the protective film 4 is tilted upward and forms a tearing position 6, which makes it easy for the staff to tear off the protective film 4 from the tearing position 6. A semi-breaking line 7 is provided on the protective film 4, and one end of the protective film 4 is tilted upward from the semi-breaking line 7.

[0041] Through the above structural design, the semi-breaking line 7 reduces the stress between the tearing hand position 6 and the protective film 4, prevents the protective film 4 from rebounding after bending, and better makes the protective film 4 tilt from the semi-breaking line 7, making it easier to tear the protective film 4.

[0042] Further optimize the blind hole protective film structure provided in Embodiment 1 or 2. For example, Figure 2 and Figure 4 As shown, the non-adhesive sheet 5 is made of PET material. The diameter of the non-adhesive sheet 5 is smaller than the diameter of the blind hole 2. The non-adhesive sheet 5 is transparent and has a different color from the protective film 4. In this way, the appearance of the PET non-adhesive sheet 5 can be colored, such as other colors like red, yellow, and green. Since the non-adhesive sheet 5 is transparent, the area of the non-adhesive sheet 5 can be recognized from the side of the protective film 4, which is convenient for alignment during attachment and prevents misalignment.

[0043] The display module 1 includes a cover plate 101, a bonding adhesive 102, an upper polarizer 103, an upper glass sheet 104, a lower glass sheet 105, and a lower polarizer 106 connected in sequence. The blind hole 2 is formed in the lower polarizer 106. The thickness of the non-adhesive sheet 5 is 0.01 - 0.2 mm, and the thickness of the non-adhesive sheet 5 is smaller than the thickness of the lower polarizer 106. Such a setting can prevent the protective film 4 from falling off due to the protrusion of the non-adhesive sheet 5 after attachment, and the use effect is better.

[0044] Further optimize the blind hole protective film structure provided in the above embodiments. For example, Figure 4 and Figure 5 As shown, the diameter of the non-adhesive sheet 5 is 2 / 3 of the diameter of the blind hole 2. The non-adhesive sheet 5 has a rectangular structure. The protective film 4 includes a transparent layer 401 and an adhesive layer 402. A non-adhesive area 403 is provided in the middle of the adhesive layer 402. The non-adhesive sheet 5 is bonded and fixed to the non-adhesive area 403 through glue.

[0045] Such a setting can achieve the isolation between the protective film 4 and the lower glass sheet 105 only by bonding and fixing the non-adhesive sheet 5 to the non-adhesive area 403 through glue, without separately processing the non-adhesive sheet 5 on the protective film 4, thereby making the processing of the protective film more convenient and reducing the processing cost.

[0046] The use process of the blind hole protective film structure provided by the present utility model is as follows:

[0047] When in use, the protective film 4 is attached to the blind hole 2 of the mobile phone display module 1, and the non-adhesive and transparent non-sticky sheet 5 is used to cover the camera hole, so as to protect the camera hole from being contaminated. By adding a non-sticky sheet 5 without adhesiveness on the surface of the protective film 4, the shape of the non-sticky sheet 5 is smaller than the blind hole 2 area on the lower polarizer 106. After the protective film 4 is attached, this non-sticky sheet 5 is within the area of the blind hole 2, and the upper end of the area of the blind hole 2 is isolated by the non-sticky sheet 5 to achieve non-adhesiveness. Even if the surface of the protective film 4 is pressed, only the non-sticky sheet 5 will contact the lower glass 105, and the glue cannot be transferred to the lower glass 105 of the display module 1, thus effectively avoiding the contamination caused by the glue transfer to the lower glass 105. And because the protective film 4 is provided with a semi-punched break line 7, the tearing position 6 of the protective film 4 can be slightly lifted, which is convenient for tearing up the protective film 4. The non-sticky sheet 5 is transparent, and the color of the non-sticky sheet 5 is different from that of the protective film 4. In this way, the appearance of the non-sticky sheet 5 made of PET material can be colored, so that the area of the non-sticky sheet 5 can be recognized from the surface of the protective film 4, which is convenient for alignment during attachment and prevents misalignment. At the same time, because the thickness of the non-sticky sheet 5 is less than the thickness of the lower polarizer 106, it can prevent the protective film 4 from falling off due to the protrusion of the position of the non-sticky sheet 5 after attachment, and the use effect is better.

[0048] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0049] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. The drawings show the preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present invention in other related technical fields shall be within the scope of the patent protection of the present invention by the same token.

Claims

1. A blind hole protective film structure, characterized in that: It includes: A protective film (4), the protective film (4) being adhered to the blind hole (2) on the display module (1), a non-sticky sheet (5) being fixedly connected to the lower surface of the protective film (4), the non-sticky sheet (5) being located inside the blind hole (2), and the non-sticky sheet (5) being used to isolate the stickiness of the protective film (4); A hot melt adhesive (3) is provided in the blind hole (2), and when the protective film (4) is adhered to the blind hole (2) on the display module (1), the hot melt adhesive (3) prevents light leakage from the edge of the blind hole (2).

2. The blind hole protection film structure according to claim 1, characterized in that: One end of the protective film (4) is tilted upward and forms a tearing position (6).

3. The blind hole protection film structure according to claim 2, characterized in that: A half-break line (7) is provided on the protective film (4), and one end of the protective film (4) is warped upward from the half-break line (7).

4. The blind hole protection film structure according to claim 1, characterized in that: The non-adhesive sheet (5) is made of PET material, and the diameter of the non-adhesive sheet (5) is smaller than the diameter of the blind hole (2).

5. The blind hole protection film structure according to claim 4, characterized in that: The non-adhesive sheet (5) is transparent, and the color of the non-adhesive sheet (5) is different from that of the protective film (4).

6. The blind hole protection film structure according to claim 5, characterized in that: The display module (1) comprises a cover plate (101), a bonding adhesive (102), an upper polarizer (103), an upper glass (104), a lower glass (105) and a lower polarizer (106) which are connected in sequence, and the blind hole (2) is provided on the lower polarizer (106).

7. The blind hole protection film structure according to claim 6, characterized in that: The thickness of the non-adhesive sheet (5) is 0.01-0.2 mm.

8. The blind hole protection film structure according to claim 6, characterized in that: The thickness of the non-adhesive sheet (5) is smaller than the thickness of the lower polarizer (106).

9. The blind hole protection film structure according to claim 4, characterized in that: The diameter of the non-adhesive sheet (5) is 2 / 3 of the diameter of the blind hole (2), and the non-adhesive sheet (5) is a rectangular structure.

10. The blind hole protection film structure according to claim 9, characterized in that: The protective film (4) comprises a transparent layer (401) and an adhesive layer (402); a non-adhesive area (403) is provided in the middle of the adhesive layer (402); and the non-adhesive sheet (5) is bonded and fixed to the non-adhesive area (403) by glue.

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