High-stability double-layer LCD display screen

Abstract

The utility model discloses a high-stability double-layer LCD display screen, which comprises a first LCD display screen and a second LCD display screen arranged below the first LCD display screen, the first LCD display screen comprises a first lower polaroid, a first lower substrate, a first upper substrate and a first upper polaroid which are sequentially overlapped from bottom to top, the second LCD display screen comprises a second lower polaroid, a second lower substrate, a second upper substrate and a second upper polaroid which are sequentially stacked from bottom to top, the first lower substrate is longer than the first upper substrate, and the second upper substrate is longer than the second lower substrate. A double-sided adhesive is arranged between the first lower substrate and the second upper substrate, or optical cement is arranged between the first lower polaroid and the second upper polaroid. The double-sided sticking area is increased, the structural stability is guaranteed, falling under the condition of frequent vibration is avoided, and the thickness of a product is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a high-stability double-layer LCD display screen. Background Art

[0002] Some LCD screens that can achieve specific display functions are traditionally made by bonding two LCD screens together through double-sided adhesive. Traditionally, a single LCD screen generally has a lower substrate that is longer than an upper substrate, and an FPC is bound to the upper surface of the upper substrate. The two LCD screens are then stacked and glued together through double-sided adhesive. This structure is limited by the narrow width of the upper substrate located at the lower layer, and double-sided adhesive can only be set in the lower polarizer of the upper LCD screen and the upper polarizer of the lower LCD screen. This structure has a small bonding space, which makes the bonding strength not strong enough. For cars with frequent vibrations, there is a risk of falling off, and the product stability is not high. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to increase the pasting area, so as to improve the pasting strength and enhance the product stability.

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

[0005] In order to solve the above technical problems, the utility model provides a high-stability double-layer LCD display screen, which includes a first LCD display screen and a second LCD display screen arranged below the first LCD display screen, the first LCD display screen includes a first lower polarizer, a first lower substrate, a first upper substrate and a first upper polarizer stacked in sequence from bottom to top, the second LCD display screen includes a second lower polarizer, a second lower substrate, a second upper substrate and a second upper polarizer stacked in sequence from bottom to top, the first lower substrate is longer than the first upper substrate, the second upper substrate is longer than the second lower substrate, and a double-sided adhesive is arranged between the first lower substrate and the second upper substrate, or an optical adhesive is arranged between the first lower polarizer and the second upper polarizer.

[0006] As a preferred implementation of the high-stability double-layer LCD display screen provided by the utility model, the double-sided adhesive is arranged around the first lower polarizer and the second upper polarizer, and the double-sided adhesive is a foam double-sided adhesive.

[0007] As a preferred implementation of the high-stability double-layer LCD display screen provided by the utility model, the side edge of the first lower polarizer is flush with the side edge of the second upper polarizer.

[0008] As a preferred implementation of the high-stability double-layer LCD display screen provided by the utility model, the side edge of the first lower polarizer and the single-side side edge of the second upper polarizer extend beyond the visible area by 0.3 mm to 0.5 mm.

[0009] As a preferred implementation of the high-stability double-layer LCD display screen provided by the utility model, the thickness of the double-sided adhesive is greater than the sum of the thicknesses of the first lower polarizer and the second upper polarizer.

[0010] As a preferred implementation of the high-stability double-layer LCD display screen provided by the utility model, the double-sided adhesive is arranged in a non-visible area.

[0011] As a preferred implementation of the high-stability double-layer LCD display screen provided by the utility model, a first FPC is bound to the upper surface of the first lower substrate.

[0012] As a preferred implementation of the high-stability double-layer LCD display screen provided by the utility model, a second FPC is bound to the lower surface of the second upper substrate.

[0013] As a preferred implementation of the high-stability double-layer LCD display screen provided by the utility model, the lengths of the first lower substrate and the second upper substrate are equal.

[0014] As a preferred implementation of the high-stability double-layer LCD display screen provided by the utility model, the lengths of the first upper substrate and the second lower substrate are equal.

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

[0016] Due to the structural setting that the first lower substrate is longer than the first upper substrate and the second upper substrate is longer than the second lower substrate, the contact area between the first LCD display screen and the second LCD display screen is increased, that is, two longer glass substrates are used for relative setting, so that the double-sided adhesive can be placed between the first lower substrate and the second upper substrate. Since the first lower substrate and the second upper substrate are both longer and have sufficient placement space, the size of the double-sided adhesive can be designed to be larger, thereby increasing the bonding area, ensuring structural stability, and avoiding falling off under frequent vibration conditions; and there is no need to set the double-sided adhesive between the first lower polarizer and the second upper polarizer, thereby reducing the thickness of the product. When optical glue is set between the first lower polarizer and the second upper polarizer, the optical glue can be completely coated between the first lower polarizer and the second upper polarizer, which can further increase the bonding area and improve the structural stability. 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 high-stability double-layer LCD display screen.

[0019] Figure 2 The present invention is a schematic structural diagram of another high-stability double-layer LCD display screen provided by the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of Example 2.

[0021] Figure 4 This is another structural schematic diagram of Example 2.

[0022] Description of Figure Numbers:

[0023] First LCD display screen 1; second LCD display screen 2; first lower polarizer 11; first lower substrate 12; first upper substrate 13; first upper polarizer 14; second lower polarizer 21; second lower substrate 22; second upper substrate 23; second upper polarizer 24; double-sided adhesive 3; optical adhesive 4; first FPC 15; second FPC 25. 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 high-stability double-layer LCD display screen, which comprises a first LCD display screen and a second LCD display screen arranged below the first LCD display screen, wherein the first LCD display screen comprises a first lower polarizer, a first lower substrate, a first upper substrate and a first upper polarizer which are sequentially stacked from bottom to top, and the second LCD display screen comprises a second lower polarizer, a second lower substrate, a second upper substrate and a second upper polarizer which are sequentially stacked from bottom to top, the first lower substrate is longer than the first upper substrate, the second upper substrate is longer than the second lower substrate, a double-sided adhesive is arranged between the first lower substrate and the second upper substrate, or an optical adhesive is arranged between the first lower polarizer and the second upper polarizer, and the double-sided adhesive is arranged around the first lower polarizer and the second upper polarizer.

[0028] Due to the structural setting that the first lower substrate is longer than the first upper substrate and the second upper substrate is longer than the second lower substrate, the contact area between the first LCD display screen and the second LCD display screen is increased, that is, two longer glass substrates are used for relative setting, so that the double-sided adhesive can be placed between the first lower substrate and the second upper substrate. Since the first lower substrate and the second upper substrate are both longer and have sufficient placement space, the size of the double-sided adhesive can be designed to be larger, thereby increasing the bonding area, ensuring structural stability, and avoiding falling off under frequent vibration conditions; and there is no need to set the double-sided adhesive between the first lower polarizer and the second upper polarizer, thereby reducing the thickness of the product. When optical glue is set between the first lower polarizer and the second upper polarizer, the optical glue can be completely coated between the first lower polarizer and the second upper polarizer, which can further increase the bonding area and improve the structural stability.

[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] Example 1

[0031] See also Figure 1 and Figure 2 , a high-stability double-layer LCD display screen provided by the utility model comprises a first LCD display screen 1 and a second LCD display screen 2, the second LCD display screen 2 is arranged below the first LCD display screen 1, the first LCD display screen 1 comprises a first lower polarizer 11, a first lower substrate 12, a first upper substrate 13 and a first upper polarizer 14 which are sequentially stacked from bottom to top, the second LCD display screen 2 comprises a second lower polarizer 21, a second lower substrate 22, a second upper substrate 23 and a second upper polarizer 24 which are sequentially stacked from bottom to top, the first lower substrate 12 is longer than the first upper substrate 13, the second upper substrate 23 is longer than the second lower substrate 22, a double-sided adhesive 3 is arranged between the first lower substrate 12 and the second upper substrate 23, or an optical adhesive is arranged between the first lower polarizer 11 and the second upper polarizer 24. Due to the structural setting that the first lower substrate 12 is longer than the first upper substrate 13 and the second upper substrate 23 is longer than the second lower substrate 22, the contact area between the first LCD display screen 1 and the second LCD display screen 2 is increased, that is, two longer glass substrates are used for relative setting, so that the double-sided adhesive 3 can be placed between the first lower substrate 12 and the second upper substrate 23. Since the first lower substrate 12 and the second upper substrate 23 are both longer and have sufficient placement space, the size of the double-sided adhesive 3 can be designed to be larger, thereby increasing the pasting area, ensuring the structural stability, and avoiding falling off under frequent vibration conditions; and there is no need to set the double-sided adhesive 3 between the first lower polarizer 11 and the second upper polarizer 24, thereby reducing the thickness of the product. When the optical adhesive 4 is set between the first lower polarizer 11 and the second upper polarizer 24, the optical adhesive can be completely coated between the first lower polarizer 11 and the second upper polarizer 24, which can further increase the pasting area and improve the structural stability.

[0032] The double-sided adhesive solution 3 can sacrifice a certain adhesive area to reduce the product thickness, while the optical adhesive solution 4 can fully guarantee the stability of the product.

[0033] Furthermore, the double-sided adhesive tape 3 is disposed around the first lower polarizer 11 and the second upper polarizer 24 , and the double-sided adhesive tape 3 is a foam double-sided adhesive tape 3 .

[0034] Furthermore, the side edge of the first lower polarizer 11 is flush with the side edge of the second upper polarizer 24 to ensure that the double-sided adhesive 3 has a maximum adhesive area.

[0035] When the double-sided adhesive 3 solution is adopted, it is recommended that the side edge of the first lower polarizer 11 and the single-sided side edge of the second upper polarizer 24 extend beyond the visible area by 0.3mm to 0.5mm to ensure that the first lower polarizer 11 and the second upper polarizer 24 cover the visible area. When the optical adhesive 4 solution is adopted, it is recommended to extend the side edge of the first lower polarizer 11 and the side edge of the second upper polarizer 24, and the side edge of the first lower polarizer 11 and the edge of the second upper polarizer 24 are about 0.3mm to 0.5mm away from the first lower substrate 11 and the second upper substrate 24, that is, the side edge of the first lower polarizer 11 and the second upper polarizer 24 are retracted by 0.3mm to 0.5mm relative to the first lower substrate 11 and the second upper substrate 24, so as to increase the bonding area of ​​the optical adhesive 4 and improve the product stability.

[0036] Furthermore, the thickness of the double-sided adhesive 3 is greater than the sum of the thicknesses of the first lower polarizer 11 and the second upper polarizer 24 to avoid direct contact between the first lower polarizer 11 and the second upper polarizer 24 .

[0037] Furthermore, the double-sided adhesive 3 is arranged in the non-visible area.

[0038] Example 2

[0039] See also Figure 3 and Figure 4 As a further optimization of Embodiment 1, in this embodiment, the upper surface of the first lower substrate 12 is bound with the first FPC 15, and the lower surface of the second upper substrate 23 is bound with the second FPC 25. The lengths of the first lower substrate 12 and the second upper substrate 23 are equal, and the lengths of the first upper substrate 13 and the second lower substrate 22 are equal, so as to ensure that the double-sided adhesive 3 has the largest adhesive area.

[0040] 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.

[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 high-stability double-layer LCD display screen, characterized in that: It includes a first LCD display screen and a second LCD display screen arranged below the first LCD display screen, wherein the first LCD display screen includes a first lower polarizer, a first lower substrate, a first upper substrate and a first upper polarizer which are sequentially stacked from bottom to top, and the second LCD display screen includes a second lower polarizer, a second lower substrate, a second upper substrate and a second upper polarizer which are sequentially stacked from bottom to top, the first lower substrate is longer than the first upper substrate, the second upper substrate is longer than the second lower substrate, and a double-sided adhesive is arranged between the first lower substrate and the second upper substrate, or an optical adhesive is arranged between the first lower polarizer and the second upper polarizer.

2. The high stability double-layer LCD display screen according to claim 1, characterized in that: The double-sided adhesive tape is arranged around the first lower polarizer and the second upper polarizer, and the double-sided adhesive tape is a foam double-sided adhesive tape.

3. The high stability double-layer LCD display screen according to claim 1, characterized in that: The side edge of the first lower polarizer is flush with the side edge of the second upper polarizer.

4. The high stability double-layer LCD display screen according to claim 1, characterized in that: The side edge of the first lower polarizer and the single side edge of the second upper polarizer extend beyond the visible area by 0.3 mm to 0.5 mm.

5. The high stability double-layer LCD display screen according to claim 1, characterized in that: The thickness of the double-sided adhesive is greater than the sum of the thicknesses of the first lower polarizer and the second upper polarizer.

6. The high stability double-layer LCD display screen according to claim 1, characterized in that: The double-sided adhesive is arranged in the non-visible area.

7. The high stability double-layer LCD display screen according to claim 1, characterized in that: A first FPC is bound to the upper surface of the first lower substrate.

8. The high stability double-layer LCD display screen according to claim 1, characterized in that: A second FPC is bound to the lower surface of the second upper substrate.

9. The high stability double-layer LCD display screen according to claim 1, characterized in that: The first lower substrate and the second upper substrate have the same length.

10. The high stability double-layer LCD display screen according to claim 1, characterized in that: The first upper substrate and the second lower substrate have the same length.

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