Liquid crystal display screen capable of improving assembly efficiency

Abstract

The utility model discloses a liquid crystal display screen capable of improving assembly efficiency, which comprises a backlight module, a lower polaroid, a lower substrate, an upper substrate, an upper polaroid and a cover plate which are sequentially overlapped from bottom to top, a foam double-sided adhesive tape is arranged on the lower surface of the backlight module around the camera hole, the foam double-sided adhesive tape comprises a base material layer, a high-viscosity layer and a low-viscosity layer, the high-viscosity layer is arranged on the upper surface of the base material layer and fixedly adhered to the lower surface of the backlight module, and the low-viscosity layer is arranged on the lower surface of the base material layer and fixedly adhered to the lower surface of the backlight module. The weak viscosity layer is arranged on the lower surface of the base material layer, a protective film is pasted and fixed on the weak viscosity layer, and the protective film is arranged on the lower surface of the backlight module located at the camera hole. When the camera module is assembled, the foam double-sided adhesive tape can be used for fixing, so that a customer does not need to add the foam double-sided adhesive tape, the material cost is reduced, and the production and assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a liquid crystal display screen with improved assembly efficiency. Background Art

[0002] The backlight module of mobile phone LCD screens needs to have a hole corresponding to the camera hole position for placing the camera module. Before the LCD screen is shipped, a protective film will be affixed to the camera hole position on the back of the backlight to prevent contamination during the transportation process and before assembly of the terminal product. When the terminal customer installs the machine, the protective film will be torn off to assemble the camera. However, this structure has low assembly efficiency and the product is not competitive enough. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to improve the assembly efficiency of a liquid crystal display screen.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] To solve the above technical problems, the utility model provides a liquid crystal display screen with improved assembly efficiency, which includes a backlight module, a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are stacked in sequence from bottom to top. A camera hole is opened on the lower surface of the backlight module, and a foam double-sided adhesive is arranged on the lower surface of the backlight module surrounding the camera hole. The foam double-sided adhesive includes a substrate layer, a strong adhesive layer and a weak adhesive layer. The strong adhesive layer is arranged on the upper surface of the substrate layer and is adhered and fixed to the lower surface of the backlight module. The weak adhesive layer is arranged on the lower surface of the substrate layer. A protective film is adhered and fixed to the weak adhesive layer. The protective film is arranged on the lower surface of the backlight module located at the camera hole.

[0006] As a preferred implementation of the liquid crystal display screen with improved assembly efficiency provided by the utility model, the strong adhesive layer is a strong adhesive glue, and the weak adhesive layer is a weak adhesive glue.

[0007] As a preferred implementation of the liquid crystal display screen with improved assembly efficiency provided by the utility model, the initial adhesion ratio of the strong viscosity glue to the weak viscosity glue is 2:1 to 50:1.

[0008] As a preferred embodiment of the liquid crystal display screen with improved assembly efficiency provided by the utility model, the glue viscosity of the weak adhesive layer and the strong adhesive layer is the same, the glue coating shape of the weak adhesive layer is a grid shape, and the glue coating shape of the strong adhesive layer is a complete coating.

[0009] As a preferred implementation of the liquid crystal display screen with improved assembly efficiency provided by the utility model, a color coating is provided on the upper surface of the substrate layer.

[0010] As a preferred implementation of the liquid crystal display screen with improved assembly efficiency provided by the utility model, the color of the color coating is red.

[0011] As a preferred embodiment of the liquid crystal display screen with improved assembly efficiency provided by the utility model, a plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.

[0012] As a preferred implementation of the liquid crystal display screen with improved assembly efficiency provided by the utility model, the groove is a closing groove which is narrow outside and wide inside.

[0013] As a preferred implementation of the liquid crystal display screen with improved assembly efficiency provided by the utility model, the cross-sectional shape of the groove is a long strip.

[0014] As a preferred implementation of the liquid crystal display screen with improved assembly efficiency provided by the utility model, the inner surface of the groove is provided with a surface treatment layer for improving surface roughness.

[0015] The utility model has the following beneficial effects:

[0016] Since the lower surface of the backlight module surrounding the camera hole is provided with foam double-sided adhesive, the foam double-sided adhesive can play a certain dust-proof role, and the strongly sticky side of the foam double-sided adhesive is adhered and fixed to the lower surface of the backlight module, while the weakly sticky side of the foam double-sided adhesive is adhered and fixed to the protective film, so that before assembly, after the end customer tears off the protective film, the foam double-sided adhesive can still remain on the backlight module to avoid the foam double-sided adhesive being lifted up by the protective film. When assembling the camera module, the foam double-sided adhesive can be used for fixing, and the customer does not need to add foam double-sided adhesive, which reduces material costs and improves production and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The utility model provides a schematic structural diagram of a liquid crystal display screen for improving assembly efficiency.

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of double-sided adhesive on medium foam.

[0020] Figure 3 It is a schematic diagram of the structure of double-sided foam adhesive and protective film.

[0021] Figure 4 This is a schematic diagram of the structure of Example 2.

[0022] Figure 5 for Figure 4 Schematic diagram of the decomposition structure.

[0023] Figure 6 for Figure 4 Schematic diagram of the improved structure.

[0024] Description of Figure Numbers:

[0025] Backlight module 1; lower polarizer 2; lower substrate 3; upper substrate 4; upper polarizer 5; cover plate 6; camera hole 11; camera module 100; double-sided foam adhesive 7; substrate layer 71; strong adhesive layer 72; weak adhesive layer 73; protective film 8;

[0026] Plastic layer 9; groove 61. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0028] 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 a limitation on the present invention.

[0029] In addition, the terms "first", "second", and "third" 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", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] The utility model provides a liquid crystal display screen with improved assembly efficiency, comprising a backlight module, a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are sequentially stacked from bottom to top, a camera hole being opened on the lower surface of the backlight module, a foam double-sided adhesive is arranged on the lower surface of the backlight module surrounding the camera hole, the foam double-sided adhesive comprises a substrate layer, a strong adhesive layer and a weak adhesive layer, the strong adhesive layer is arranged on the upper surface of the substrate layer and is glued and fixed to the lower surface of the backlight module, the weak adhesive layer is arranged on the lower surface of the substrate layer, a protective film is glued and fixed to the weak adhesive layer, and the protective film is arranged on the lower surface of the backlight module located at the camera hole.

[0031] Since the lower surface of the backlight module surrounding the camera hole is provided with foam double-sided adhesive, the foam double-sided adhesive can play a certain dust-proof role, and the strongly sticky side of the foam double-sided adhesive is adhered and fixed to the lower surface of the backlight module, while the weakly sticky side of the foam double-sided adhesive is adhered and fixed to the protective film, so that before assembly, after the end customer tears off the protective film, the foam double-sided adhesive can still remain on the backlight module to avoid the foam double-sided adhesive being lifted up by the protective film. When assembling the camera module, the foam double-sided adhesive can be used for fixing, and the customer does not need to add foam double-sided adhesive, which reduces material costs and improves production and assembly efficiency.

[0032] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.

[0033] Example 1

[0034] See also Figures 1 to 3, a liquid crystal display screen with improved assembly efficiency provided by the utility model, comprising a backlight module 1, a lower polarizer 2, a lower substrate 3, an upper substrate 4, an upper polarizer 5 and a cover plate 6 which are sequentially stacked from bottom to top, a camera hole 11 is opened on the lower surface of the backlight module 1, and the camera hole 11 is used to place the camera module 100, and a foam double-sided adhesive 7 is arranged on the lower surface of the backlight module 1 around the camera hole 11, and the foam double-sided adhesive 7 comprises a substrate layer 71, a strong adhesive layer 72 and a weak adhesive layer 73, the strong adhesive layer 72 is arranged on the upper surface of the substrate layer 71 and is adhered and fixed to the lower surface of the backlight module 1, the weak adhesive layer 73 is arranged on the lower surface of the substrate layer 71, and a protective film 8 is adhered and fixed to the weak adhesive layer 73, and the protective film 8 is arranged on the lower surface of the backlight module 1 located at the camera hole 11. Since the lower surface of the backlight module 1 surrounding the camera hole 11 is provided with a foam double-sided adhesive 7, the foam double-sided adhesive 7 can play a certain dust-proof role, and the strongly sticky side of the foam double-sided adhesive 7 is adhered and fixed to the lower surface of the backlight module 1, while the weakly sticky side of the foam double-sided adhesive 7 is adhered and fixed to the protective film 8, so that before assembly, after the end customer tears off the protective film 8, the foam double-sided adhesive 7 can still remain adhered to the backlight module 1, avoiding the foam double-sided adhesive 7 being lifted up by the protective film 8. When assembling the camera module, the foam double-sided adhesive 7 can be used for fixing, and the customer does not need to add foam double-sided adhesive 7, thereby reducing material costs and improving production and assembly efficiency.

[0035] Furthermore, the strong adhesive layer 72 is a strong adhesive glue, and the weak adhesive layer 73 is a weak adhesive glue.

[0036] Furthermore, the initial adhesion ratio of the strong adhesive glue to the weak adhesive glue is 2:1 to 50:1, and the purpose of controlling the adhesion between the strong adhesive layer 72 and the weak adhesive layer 73 is achieved by controlling the initial adhesion ratio of the strong adhesive glue to the weak adhesive glue.

[0037] As a preferred embodiment of the liquid crystal display screen with improved assembly efficiency provided by the utility model, the glue viscosity of the weak adhesive layer 73 and the strong adhesive layer 72 is the same, the glue coating shape of the weak adhesive layer 73 is a grid shape, and the glue coating shape of the strong adhesive layer 72 is a complete coating.

[0038] Furthermore, the weak adhesive layer 73 and the strong adhesive layer 72 have the same glue viscosity, and the glue coating shape of the weak adhesive layer 73 is a grid shape, while the glue coating shape of the strong adhesive layer 72 is a complete coating shape. Since the weak adhesive layer 73 and the strong adhesive layer 72 have the same glue viscosity, only one type of glue can be purchased, so that the purchase quantity of glue is increased, thereby reducing the purchase cost, and at the same time, it will not be confused during the glue coating process, thereby improving production efficiency and avoiding the problem of using the wrong glue. The coating shape of the weak adhesive layer 73 is a grid shape, which is equivalent to reducing the glue area of ​​the weak adhesive layer 73, thereby reducing the viscosity of the weak adhesive layer 73.

[0039] Furthermore, a color coating is provided on the upper surface of the substrate layer 71, and the strong adhesive layer 72 is provided above the color coating. The color coating can better help the staff to identify which side is the weak adhesive layer 73 and which side is the strong adhesive layer 72, thereby playing a fool-proof role, and thus avoiding reversing the strong adhesive layer 72 and the weak adhesive layer 73 during assembly, thereby improving assembly efficiency and reducing the generation of defective products.

[0040] Furthermore, the color of the color coating is red, which is more conspicuous and makes it easier for staff to identify.

[0041] Example 2

[0042] See also Figures 4 to 6 As a further optimization scheme of Example 1, in this embodiment, the upper surface of the cover plate 6 is covered with a plastic layer 9, and a plurality of grooves 61 are formed downward on the upper surface of the cover plate 6 by etching, and a portion of the lower surface of the plastic layer 9 is embedded in each groove 61. Since the surface of the groove 61 formed by etching has a certain degree of roughness, the plastic layer 9 can be tightly bonded to the groove 61 to prevent the cover plate 6 and the plastic layer 9 from falling off. Since the upper part of the cover plate 6 is covered with a plastic layer 9, and a plurality of grooves 61 are formed on the upper surface of the cover plate 6 by etching, and the plastic layer 9 can be embedded in the interior of the plurality of grooves 61, the grooves 61 formed by etching make the inner surface of the grooves 61 have a certain degree of roughness, and the surface of the grooves 61 with a certain degree of roughness can improve the bonding force between the grooves 61 and the plastic layer 9, thereby reducing the possibility of separation of the grooves 61 and the plastic layer 9. When the LCD screen is hit or falls, the plastic layer 9 on the upper surface of the cover plate 6 can directly withstand the external force, thereby preventing the external force from directly acting on the cover plate 6. Since the plastic layer 9 can absorb most of the energy, the remaining external force is very weak when it acts on the cover plate 6, thereby effectively reducing the risk of the cover plate 6 being broken or damaged; and when the LCD screen is subjected to external force, even if the external force is large, it will only damage the plastic layer 9 on the upper surface of the cover plate 6, and will not directly damage the cover plate 6. Therefore, it can be avoided that the cover plate 6 is damaged and the LCD screen cannot be used normally, which brings a better user experience to the user and improves the anti-fall ability of the LCD screen.

[0043] Furthermore, the shape of the groove 61 can be square or circular, and the cross-sectional shape of the groove 61 can be a closing groove that is narrow on the outside and wide on the inside. In the present embodiment, the cross-sectional shape of the groove 61 is an isosceles trapezoid, and the cross-sectional shape of the groove 61 is an elongated strip. The isosceles trapezoidal groove 61 can make the plastic layer 9 tightly embedded in the groove 61, avoiding the separation of the groove 61 and the plastic layer 9, thereby preventing the cover plate 6 and the plastic layer 9 from falling off. The elongated groove 61 can increase the fitting portion between the plastic layer 9 and the groove 61, thereby improving the fitting strength between the groove 61 and the plastic layer 9.

[0044] Furthermore, a surface treatment layer for improving the surface roughness is provided on the inner surface of the groove 61 to further improve the adhesion between the groove 61 and the plastic layer 9 and prevent the cover plate 6 and the plastic layer 9 from being separated.

[0045] 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; 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.

[0046] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A liquid crystal display screen with improved assembly efficiency, characterized in that: It includes a backlight module, a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are stacked in sequence from bottom to top. A camera hole is opened on the lower surface of the backlight module. A foam double-sided adhesive is arranged on the lower surface of the backlight module surrounding the camera hole. The foam double-sided adhesive includes a base material layer, a strong adhesive layer and a weak adhesive layer. The strong adhesive layer is arranged on the upper surface of the base material layer and is adhered and fixed to the lower surface of the backlight module. The weak adhesive layer is arranged on the lower surface of the base material layer. A protective film is adhered and fixed to the weak adhesive layer. The protective film is arranged on the lower surface of the backlight module located at the camera hole.

2. The liquid crystal display screen with improved assembly efficiency according to claim 1, characterized in that: The strong adhesive layer is a strong adhesive glue, and the weak adhesive layer is a weak adhesive glue.

3. The liquid crystal display screen with improved assembly efficiency according to claim 2, characterized in that: The initial adhesion ratio of the strong adhesive and the weak adhesive is 2:1 to 50:

1.

4. The liquid crystal display screen with improved assembly efficiency according to claim 1, characterized in that: The glue viscosity of the weak adhesive layer and the strong adhesive layer is the same, the glue coating shape of the weak adhesive layer is a grid shape, and the glue coating shape of the strong adhesive layer is a complete coating.

5. The liquid crystal display screen with improved assembly efficiency according to claim 1, characterized in that: The upper surface of the substrate layer is provided with a color coating.

6. The liquid crystal display screen with improved assembly efficiency according to claim 5, characterized in that: The color of the color coating is red.

7. The liquid crystal display screen with improved assembly efficiency according to claim 1, characterized in that: A plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.

8. The liquid crystal display screen with improved assembly efficiency according to claim 7, characterized in that: The groove is a closing groove which is narrow outside and wide inside.

9. The liquid crystal display screen with improved assembly efficiency according to claim 7, characterized in that: The cross-section of the groove is in the shape of an elongated strip.

10. The liquid crystal display screen with improved assembly efficiency according to claim 7, characterized in that: The inner surface of the groove is provided with a surface treatment layer for improving the surface roughness.

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