Liquid crystal display screen capable of improving alignment precision

Abstract

The utility model discloses a liquid crystal display screen capable of improving alignment precision, which comprises a lower iron stand, a backlight module, a display module, a cover plate and a frame adhesive tape, the lower iron stand comprises a bottom plate and a side wall extending upwards from the edge of the bottom plate; the backlight module is arranged above the bottom plate; the display module is arranged above the backlight module; the cover plate is arranged above the side wall; the frame adhesive tape is arranged between the upper surface of the side wall and the lower surface of the cover plate, the frame adhesive tape comprises an adhesive layer and a magnet arranged below the adhesive layer, and the boundary dimension of the magnet corresponds to the boundary dimension of the upper surface of the side wall. The magnet is fixed to the upper surface of the side wall in an adsorption mode, through precise magnetic attraction alignment and matching with the appearance of the lower iron frame, it is guaranteed that the problem that a cover plate shields a visual area due to alignment deviation of module goods is avoided, the module assembling speed is increased, and then the product competitiveness 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 alignment accuracy. Background Art

[0002] Traditional modules with lower iron frames generally use a frame-sticking structure to add a cover plate, that is, the cover plate and the lower iron frame are fixed by frame stickers. If there is a positioning deviation at the end of the bonding process, the visible area of ​​the display module will be blocked by the cover plate, resulting in incomplete display of the display module, which in turn increases the defective rate of the LCD screen, increases the production and manufacturing costs of the LCD screen, and reduces the competitiveness of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to improve the alignment accuracy between the cover plate and the lower iron frame, so as to avoid blocking the viewing area of ​​the display module, thereby improving the competitiveness of the product.

[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 alignment accuracy, which includes a lower iron frame, a backlight module, a display module, a cover plate and a frame adhesive strip, the lower iron frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate; the backlight module is arranged above the bottom plate; the display module is arranged above the backlight module; the cover plate is arranged above the side wall; the frame adhesive strip is arranged between the upper surface of the side wall and the lower surface of the cover plate, the frame adhesive strip includes an adhesive layer and a magnet arranged below the adhesive layer, and the outer dimensions of the magnet correspond to the outer dimensions of the upper surface of the side wall.

[0006] As a preferred implementation of the liquid crystal display screen with improved alignment accuracy provided by the utility model, a bearing portion extends inwardly from the top of the side wall, and the outer dimensions of the bearing portion correspond to the outer dimensions of the upper surface of the side wall.

[0007] As a preferred embodiment of the liquid crystal display screen with improved alignment accuracy provided by the utility model, the adhesive layer includes a substrate layer, a first adhesive layer and a second adhesive layer, the first adhesive layer is arranged on the upper surface of the substrate layer, the cross-sectional shape of the substrate layer is a U-shape, the second adhesive layer is arranged on the lower surface and the inner surface of the substrate layer, and the magnet is adhered to the lower surface and the inner surface of the substrate layer.

[0008] As a preferred implementation of the liquid crystal display screen with improved alignment accuracy provided by the utility model, the first adhesive layer is a weak adhesive layer, and the second adhesive layer is a strong adhesive layer.

[0009] As a preferred implementation of the liquid crystal display screen with improved alignment accuracy provided by the utility model, the first adhesive layer and the second adhesive layer have the same material viscosity, and the coating area of ​​the first adhesive layer is smaller than the coating area of ​​the second adhesive layer.

[0010] As a preferred implementation of the liquid crystal display screen with improved alignment accuracy provided by the utility model, an anti-foolproof recognition portion is provided on the upper surface of the substrate layer.

[0011] As a preferred implementation of the liquid crystal display screen with improved alignment accuracy provided by the utility model, the foolproof identification part is a color coating.

[0012] As a preferred implementation of the liquid crystal display screen with improved alignment accuracy provided by the utility model, the color coating is red or yellow.

[0013] As a preferred embodiment of the liquid crystal display screen with improved alignment accuracy provided by the utility model, the lower surface and the inner surface of the substrate layer are provided with a surface treatment layer for improving the surface roughness.

[0014] As a preferred implementation of the liquid crystal display screen with improved alignment accuracy provided by the utility model, the surface treatment layer is a diamond knurling or frosted treatment layer.

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

[0016] Since the frame adhesive strip includes an adhesive layer and a magnet disposed below the adhesive layer, the adhesive layer is adhered and fixed to the lower surface of the cover plate, and the magnet is adsorbed and fixed to the upper surface of the side wall, and the outer dimensions of the magnet correspond to the outer dimensions of the upper surface of the side wall, the magnet is precisely aligned with the outer shape of the lower iron frame through magnetic attraction, ensuring that the module will not have the problem of the cover plate blocking the visual area due to alignment deviation. Once the traditional adhesive strip is offset after bonding, the repair process must be disassembled again, and the repair time and cost are too high. However, the magnet of the frame adhesive strip provided by the utility model is consistent with the contour of the frame of the lower iron frame, and is accurately aligned after being installed by the clamp, and is not prone to deviation. Even if deviation occurs, it can be fine-tuned again by the clamp, which greatly reduces the cost of rework and increases the assembly speed of the module, thereby improving the competitiveness of the product. 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 structural schematic diagram of a liquid crystal display screen with improved alignment accuracy.

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle frame adhesive strip.

[0020] Figure 3 Schematic diagram of the improved structure of the frame adhesive strip.

[0021] Description of Figure Numbers:

[0022] Lower iron frame 1; backlight module 2; display module 3; cover plate 4; frame adhesive strip 5; bottom plate 11; side wall 12; adhesive layer 51; magnet 52;

[0023] Base material layer 511 ; first adhesive layer 512 ; second adhesive layer 513 . DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] 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.

[0027] The utility model provides a liquid crystal display screen with improved alignment accuracy, which comprises a lower iron frame, a backlight module, a display module, a cover plate and a frame-sticking adhesive strip, wherein the lower iron frame comprises a bottom plate and a side wall extending upward from the edge of the bottom plate; the backlight module is arranged above the bottom plate; the display module is arranged above the backlight module; the cover plate is arranged above the side wall; the frame-sticking adhesive strip is arranged between the upper surface of the side wall and the lower surface of the cover plate, and the frame-sticking adhesive strip comprises an adhesive layer and a magnet arranged below the adhesive layer, and the outer dimensions of the magnet correspond to the outer dimensions of the upper surface of the side wall.

[0028] Since the frame adhesive strip includes an adhesive layer and a magnet arranged under the adhesive layer, the adhesive layer is adhered and fixed to the lower surface of the cover plate, and the magnet is adsorbed and fixed to the upper surface of the side wall, and the outer dimensions of the magnet correspond to the outer dimensions of the upper surface of the side wall, the magnetic attraction is precisely aligned with the outer shape of the lower iron frame to ensure that the module will not have the problem of the cover plate blocking the field of view caused by alignment deviation, and the module assembly speed is improved, thereby improving the competitiveness of the product.

[0029] 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.

[0030] See also Figure 1 and Figure 2, a liquid crystal display screen for improving alignment accuracy provided by the present utility model, which includes a lower iron frame 1, a backlight module 2, a display module 3, a cover plate 4 and a frame adhesive strip 5. The lower iron frame 1 includes a bottom plate 11 and a side wall 12, and the side wall 12 extends upward from the edge of the bottom plate 11; the backlight module 2 is arranged above the bottom plate 11; the display module 3 is arranged above the backlight module 2; the cover plate 4 is arranged above the side wall 12; the frame adhesive strip 5 is arranged between the upper surface of the side wall 12 and the lower surface of the cover plate 4. The frame adhesive strip 5 includes an adhesive layer 51 and a magnet 52, and the magnet 52 is arranged below the adhesive layer 51. The outer dimension of the magnet 52 corresponds to the outer dimension of the upper surface of the side wall 12. Since the frame adhesive strip 5 includes an adhesive layer 51 and a magnet 52 arranged below the adhesive layer 51, the adhesive layer 51 is fixedly adhered to the lower surface of the cover plate 4, and the magnet 52 is fixedly adsorbed to the upper surface of the side wall 12. The outer dimension of the magnet 52 corresponds to the outer dimension of the upper surface of the side wall 12. Through magnetic adsorption alignment, it is accurately aligned with the outer shape of the lower iron frame, ensuring that there will be no problem of the cover plate 4 blocking the viewing area caused by alignment deviation during the production of the module. Once the traditional adhesive strip is misaligned after being adhered, it needs to be disassembled again during the repair process, and the repair time and cost are too high. The magnet 52 of the frame adhesive strip 5 provided by the present utility model is accurately aligned after being installed by a fixture because it fits the border contour of the lower iron frame 1 and is not easily misaligned. And even if there is misalignment, it can be fine-tuned again by the fixture, greatly reducing the repair cost and improving the module assembly speed, thereby improving the competitiveness of the product.

[0031] And when it is found that there is a certain deviation in the adsorption between the side wall 12 of the lower iron frame 1 and the frame adhesive strip 5, the cover plate 4 can also be moved for adjustment, reducing the rework cost and improving the competitiveness of the product.

[0032] Furthermore, a bearing part extends inward from the top of the side wall 12, and the outer dimension of the bearing part corresponds to the outer dimension of the upper surface of the side wall 12.

[0033] Please refer to Figure 3 , as a further optimized solution of Embodiment 1, in this embodiment, the adhesive layer 51 includes a base material layer 511, a first adhesive layer 512 and a second adhesive layer 513. The first adhesive layer 512 is arranged on the upper surface of the base material layer 511. The cross-sectional shape of the base material layer 511 is a U-shaped. The second adhesive layer 513 is arranged on the lower surface and the inner surface of the base material layer 511, and the magnet 52 is adhered to the lower surface and the inner surface of the base material layer 511. The U-shaped base material layer 511 can provide accurate positioning for the magnet 52, and since the magnet 52 can be adhered on three sides, the firmness of the magnet 52 is also improved.

[0034] Furthermore, the first adhesive layer 512 is a weak adhesive layer, and the second adhesive layer 513 is a strong adhesive layer. The strong adhesive layer is adhered to the magnet 52 to ensure the stability of the adhesion, while the weak adhesive layer is adhered to the cover plate 4. While ensuring the firmness, it also avoids the first adhesive layer 512 causing pulling deformation of the cover plate 4 when the cover plate 4 undergoes severe thermal expansion due to excessive temperature.

[0035] Furthermore, the material viscosity of the first adhesive layer 512 and the second adhesive layer 513 is the same, and the coating area of ​​the first adhesive layer 512 is smaller than the coating area of ​​the second adhesive layer 513, so that the first adhesive layer 512 and the second adhesive layer 513 can be purchased from the same material, thereby reducing procurement costs.

[0036] Furthermore, a foolproof identification portion is provided on the upper surface of the substrate layer 511 , so that the staff can identify which side is the strong adhesive layer and which side is the weak adhesive layer through the foolproof identification portion.

[0037] Furthermore, the fool-proof identification part is a color coating, which allows staff to identify it.

[0038] Furthermore, the color coating is red or yellow, which is more conspicuous and can be easily identified by staff.

[0039] Furthermore, a surface treatment layer for improving the surface roughness is provided on the lower surface and the inner surface of the substrate layer 511 , so as to further improve the adhesion between the second adhesive layer 513 and the substrate layer 511 .

[0040] Furthermore, the surface treatment layer is a diamond knurled or frosted treatment layer. In the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection, or an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0041] 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 alignment accuracy, characterized in that: It includes: A lower iron frame, comprising a bottom plate and side walls extending upward from the edge of the bottom plate; A backlight module, which is arranged above the bottom plate; A display module, which is arranged above the backlight module; a cover plate, which is arranged above the side wall; A frame-sticking strip is arranged between the upper surface of the side wall and the lower surface of the cover plate. The frame-sticking strip includes an adhesive layer and a magnet arranged below the adhesive layer. The outer dimensions of the magnet correspond to the outer dimensions of the upper surface of the side wall.

2. The liquid crystal display screen with improved alignment accuracy according to claim 1, characterized in that: A bearing portion extends inwardly from the top of the side wall, and the outer dimensions of the bearing portion correspond to the outer dimensions of the upper surface of the side wall.

3. The liquid crystal display screen with improved alignment accuracy according to claim 1, characterized in that: The adhesive layer includes a substrate layer, a first adhesive layer and a second adhesive layer. The first adhesive layer is arranged on the upper surface of the substrate layer. The cross-sectional shape of the substrate layer is a U-shaped layer. The second adhesive layer is arranged on the lower surface and the inner surface of the substrate layer. The magnet is adhered to the lower surface and the inner surface of the substrate layer.

4. The liquid crystal display screen with improved alignment accuracy according to claim 3, characterized in that: The first adhesive layer is a weak adhesive layer, and the second adhesive layer is a strong adhesive layer.

5. The liquid crystal display screen with improved alignment accuracy according to claim 4, characterized in that: The first adhesive layer and the second adhesive layer have the same material viscosity, and the coating area of ​​the first adhesive layer is smaller than the coating area of ​​the second adhesive layer.

6. The liquid crystal display screen with improved alignment accuracy according to claim 4, characterized in that: The upper surface of the substrate layer is provided with a foolproof identification portion.

7. The liquid crystal display screen with improved alignment accuracy according to claim 6, characterized in that: The foolproof identification portion is a color coating.

8. The liquid crystal display screen with improved alignment accuracy according to claim 7, characterized in that: The color coating is red or yellow.

9. The liquid crystal display screen with improved alignment accuracy according to claim 3, characterized in that: The lower surface and the inner surface of the substrate layer are provided with a surface treatment layer for improving the surface roughness.

10. The liquid crystal display screen with improved alignment accuracy according to claim 9, characterized in that: The surface treatment layer is a diamond knurled or frosted layer.

Images