Complete machine assembled anti-cracking liquid crystal display screen

Abstract

The utility model discloses a complete machine assembly anti-cracking liquid crystal display screen which comprises a lower polaroid, a lower substrate, an upper substrate, an upper polaroid and a cover plate which are sequentially arranged in an overlapped mode from bottom to top, and the lower substrate is longer than the upper substrate and extends outwards to form a step. A step is arranged on the upper surface of the lower substrate, a driving IC (integrated circuit) and an FPC (flexible printed circuit) are bound in the middle of the upper surface of the lower substrate located at the step, the upper surface of the lower substrate located at the step is coated with buffer glue, the number of the buffer glue is two, the buffer glue is located on two sides of the driving IC respectively, and the coating shapes of the two buffer glue are spherical. And after coating is completed, pressing pressure is applied between the cover plate and the lower substrate, so that the buffer rubber can be uniformly distributed between the lower substrate and the cover plate, a good buffering effect is achieved, the situation that the liquid crystal display screen is pressed and broken in the whole machine assembling process is avoided, and normal display of the liquid crystal display screen is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a whole machine assembled anti-crack liquid crystal display screen. Background Art

[0002] There is usually a part of the position between the cover plate and the lower substrate of the LCD screen that is in a suspended state. In this state, the LCD screen is prone to being pressed and cracked during the assembly process of the whole machine, which affects the normal display of the LCD screen, increases the probability of defective products, increases the production cost 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 prevent a liquid crystal display screen from being pressed and broken during the assembly process with a complete machine.

[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 completely assembled anti-crack liquid crystal display screen, which includes 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, the lower substrate is longer than the upper substrate and extends outward to form a step, the middle part of the upper surface of the lower substrate located at the step is bound with a driver IC and an FPC, the upper surface of the lower substrate located at the step is coated with buffer glue, the buffer glue has two locations and is respectively located on both sides of the driver IC, and the coating shape of the two buffer glue locations is spherical.

[0006] As a preferred implementation of the completely assembled anti-crack liquid crystal display screen provided by the utility model, the buffer glue is silicone glue.

[0007] As a preferred implementation of the completely assembled anti-crack liquid crystal display screen provided by the utility model, the diameter of the buffer glue before lamination is 1.5mm-2.3mm, and the thickness of the buffer glue before lamination is 0.5mm-0.6mm.

[0008] As a preferred implementation of the completely assembled anti-crack liquid crystal display provided by the utility model, the distance between the buffer glue and the edge of the lower substrate before lamination is 0.3mm-0.5mm.

[0009] As a preferred embodiment of the completely assembled anti-crack LCD screen provided by the utility model, the FPC includes a non-bending area and bending areas arranged on both sides of the non-bending area, and the bending area is provided with a PI reinforcement plate and a plurality of vias, and the PI reinforcement plate completely covers the plurality of vias.

[0010] As a preferred implementation of the completely assembled anti-crack liquid crystal display screen provided by the utility model, a plurality of the via holes are arranged in a line segment shape.

[0011] As a preferred embodiment of the completely assembled anti-crack liquid crystal display provided by the utility model, the FPC includes a lower protective film, a lower copper layer, a substrate layer, an upper copper layer and an upper protective film arranged in sequence from bottom to top, and the PI reinforcement plate is arranged above the upper protective film.

[0012] As a preferred implementation of the completely assembled crack-resistant liquid crystal display screen provided by the utility model, the PI reinforcing plate is a PI covering film.

[0013] As a preferred implementation of the completely assembled crack-resistant liquid crystal display provided by the utility model, the thickness of the PI covering film is 0.1 mm.

[0014] As a preferred implementation of the completely assembled crack-resistant liquid crystal display provided by the utility model, the PI reinforcement plate does not extend beyond the non-bending area.

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

[0016] Since the upper surface of the lower substrate is coated with buffer glue, and there are two places of the buffer glue and they are respectively located on both sides of the driver IC, and the coating shape of the two buffer glue places is spherical, after the coating is completed, a pressing pressure is applied between the cover plate and the lower substrate, so that the buffer glue can be evenly distributed between the lower substrate and the cover plate, thereby playing a good buffering role, avoiding the LCD screen from being pressed and cracked during the assembly process with the whole machine, thereby ensuring the normal display of the LCD screen, reducing the probability of defective products, reducing the production cost of the LCD screen, and 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 schematic structural diagram of a whole machine assembly anti-crack liquid crystal display screen after pressing.

[0019] Figure 2 for Figure 1 A top view of the upper substrate and the lower substrate.

[0020] Figure 3 for Figure 2 Schematic diagram of the structure before pressing.

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

[0022] Figure 5 for Figure 4 Schematic diagram of the structure of the via hole on the FPC.

[0023] Description of Figure Numbers: 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 completely assembled anti-crack liquid crystal display screen, which comprises a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are sequentially stacked from bottom to top, wherein the lower substrate is longer than the upper substrate and extends outward to form a step, a driving IC and an FPC are bound to the middle part of the upper surface of the lower substrate at the step, and a buffer glue is coated on the upper surface of the lower substrate at the step, wherein the buffer glue has two locations and is respectively located on both sides of the driving IC, and the coating shape of the buffer glue at the two locations is both spherical.

[0028] Since the upper surface of the lower substrate is coated with buffer glue, and there are two places of the buffer glue and they are respectively located on both sides of the driver IC, and the coating shape of the two buffer glue places is spherical, after the coating is completed, a pressing pressure is applied between the cover plate and the lower substrate, so that the buffer glue can be evenly distributed between the lower substrate and the cover plate, thereby playing a good buffering role, avoiding the LCD screen from being pressed and cracked during the assembly process with the whole machine, thereby ensuring the normal display of the LCD screen, reducing the probability of defective products, reducing the production cost of the LCD screen, and 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 Figures 1 to 3, which is a completely assembled anti-crack liquid crystal display provided by the utility model, comprising a lower polarizer 1, a lower substrate 2, an upper substrate 3, an upper polarizer 4 and a cover plate 5 which are stacked in sequence from bottom to top, the lower substrate 2 is longer than the upper substrate 3 and extends outward to form a step, the middle part of the upper surface of the lower substrate 2 located at the step is bound with a driver IC 6 and an FPC 7, the upper surface of the lower substrate 2 located at the step is coated with a buffer glue 8, the buffer glue 8 has two locations and is respectively located on both sides of the driver IC 6, and the coating shape of the two buffer glues 8 is spherical. Since the upper surface of the lower substrate 2 is coated with buffer glue 8, and there are two places of buffer glue 8 and they are respectively located on both sides of the driver IC 6, the coating shape of the two buffer glue 8 is spherical. After the coating is completed, a pressing pressure is applied between the cover plate 5 and the lower substrate 2, so that the buffer glue 8 can be evenly distributed between the lower substrate 2 and the cover plate 5, thereby playing a good buffering role, avoiding the liquid crystal display screen from being pressed and cracked during the assembly process with the whole machine, thereby ensuring the normal display of the liquid crystal display screen, reducing the probability of defective products, reducing the production cost of the liquid crystal display screen, and improving the competitiveness of the product.

[0031] Furthermore, the buffer glue 8 is silicone glue.

[0032] Further, the diameter of the buffer glue 8 before the cover plate 5 and the lower substrate 2 are pressed together is 1.5mm-2.3mm. The thickness of the buffer glue 8 before the cover plate 5 and the lower substrate 2 are pressed together is 0.5mm-0.6mm. The distance between the buffer glue 8 and the edge of the lower substrate 2 before the cover plate 5 and the lower substrate 2 are pressed together is 0.3mm-0.5mm, so as to ensure that the buffer glue 8 can be evenly distributed between the lower substrate 2 and the cover plate 5 after the pressing pressure is applied. In this embodiment, the buffer glue 8 can partially cover the driver IC 6 after the cover plate 5 and the lower substrate 2 are pressed together.

[0033] See also Figure 4 and Figure 5 As a further optimization scheme of Example 1, in this embodiment, FPC7 includes a non-bending area 701 and a bending area 702 arranged on both sides of the non-bending area 701. The bending area 702 is provided with a PI reinforcing plate 72 and a plurality of vias 71. These vias 71 are bridges connecting the upper and lower copper layers, and their reliability is very important. The vias 71 cannot be subjected to heavy pressure, and are afraid of being scratched, and are even more afraid of being broken. Therefore, it is not allowed to punch vias 71 in the general bending area 702, because the bending force will directly act on the vias 71, affecting the reliability of the vias 71. The PI reinforcing plate 72 completely covers a plurality of vias 71. There are multiple vias 71 on the non-bending area 701, and the vias 71 are relatively fragile, which is easy to cause stress concentration and cause fracture at the vias 71. Since the PI reinforcing plate 72 completely covers the vias 71, the stress is concentrated around the reinforcing plate 72 instead of at the vias 71, preventing the risk of fracture at the vias 71 and avoiding the failure of FPC7.

[0034] Furthermore, a plurality of via holes 71 are arranged in a line segment shape. Since a reinforcing plate 72 completely covers the via holes 71, even if the via holes 71 are arranged in a line segment shape, it can be ensured that the via holes 71 are not prone to breakage, thereby improving the designability of the product and improving the product competitiveness.

[0035] Furthermore, the FPC 7 includes a lower protective film 73 , a lower copper layer 74 , a substrate layer 75 , an upper copper layer 76 and an upper protective film 77 which are sequentially arranged from bottom to top, and the PI reinforcement plate 72 is arranged above the upper protective film 77 .

[0036] Furthermore, the PI reinforcing plate 72 is a PI covering film, which has lower cost and simpler assembly process.

[0037] Furthermore, the thickness of the PI covering film is 0.1 mm to ensure that the PI covering film has sufficient strength. The PI covering film is fixed by double-sided adhesive with a thickness of 0.025 mm. The edge of the covering film is greater than 0.5 mm away from the via 71 to ensure that the stress concentration does not affect the via 71, prevent the risk of fracture at the via 71, and avoid failure of FPC7.

[0038] Furthermore, the PI reinforcing plate 72 does not extend beyond the non-bending area 701. That is, the PI reinforcing plate 72 is disposed in the non-bending area 701 to prevent stress from being concentrated in the bending area 702 and to avoid fracture in the bending area 702.

[0039] 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.

[0040] 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 fully assembled anti-crack liquid crystal display screen, characterized in that: It includes 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. The lower substrate is longer than the upper substrate and extends outward to form a step. A driving IC and an FPC are bound to the middle part of the upper surface of the lower substrate at the step. The upper surface of the lower substrate at the step is coated with buffer glue. There are two places of the buffer glue, which are respectively located on both sides of the driving IC. The coating shape of the two buffer glues is spherical.

2. The whole-machine assembled anti-crack liquid crystal display screen according to claim 1, characterized in that: The buffer glue is silicone glue.

3. The whole-machine assembled anti-crack liquid crystal display screen according to claim 1, characterized in that: The diameter of the buffer glue before lamination is 1.5 mm-2.3 mm, and the thickness of the buffer glue before lamination is 0.5 mm-0.6 mm.

4. The whole-machine assembled anti-crack liquid crystal display screen according to claim 1, characterized in that: The distance between the buffer glue and the edge of the lower substrate before lamination is 0.3mm-0.5mm.

5. The whole-machine assembled anti-crack liquid crystal display screen according to claim 1, characterized in that: The FPC includes a non-bending area and bending areas arranged on both sides of the non-bending area. A PI reinforcing plate and a plurality of vias are arranged on the bending area, and the PI reinforcing plate completely covers the plurality of vias.

6. The whole-machine assembled anti-crack liquid crystal display screen according to claim 5, characterized in that: A plurality of the via holes are arranged in a line segment shape.

7. The fully assembled anti-crack liquid crystal display screen according to claim 5, characterized in that: The FPC comprises a lower protective film, a lower copper layer, a substrate layer, an upper copper layer and an upper protective film which are arranged in sequence from bottom to top, and the PI reinforcing plate is arranged above the upper protective film.

8. The fully assembled anti-crack liquid crystal display screen according to claim 5, characterized in that: The PI reinforcing plate is a PI covering film.

9. The fully assembled anti-crack liquid crystal display screen according to claim 8, characterized in that: The thickness of the PI covering film is 0.1 mm.

10. The fully assembled anti-crack liquid crystal display screen according to claim 5, characterized in that: The PI reinforcing plate does not extend beyond the non-bending area.

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