FPC (Flexible Printed Circuit) binding position anti-torsion and anti-tearing liquid crystal display screen
By designing the notch and the ear-like structure of the Pin foot at the bound end of the FPC, the problem of FPC being prone to tear when twisted is solved, protecting the Pin foot and improving the detection efficiency of product quality, reducing the defect rate of the entire machine.
Patent Information
- Application Number
- CN202420494909.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-13
AI Technical Summary
During the assembly process of the rear section of the LCD module, the FPC is prone to tear or shedding when twisting, resulting in product quality problems and the improvement of the defect rate of the whole machine.
A FPC binding positioning is designed, by opening notches on both sides of the binding end of the FPC and setting normal and empty pins between the notches and the outside, forming an ear-like structure to first destroy the normal pins in the middle of the ear protection when twisting.
It effectively protects the normal pin of FPC, avoids damage to the pin during the twisting process, and can easily determine whether the ears are torn through appearance inspection, thereby screening out quality risk products and reducing the defect rate of the whole machine.
Smart Images
Figure CN222672085U_ABST
Abstract
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 an FPC binding position that resists torsion and tearing. Background Art
[0002] During the later assembly process of LCD modules, LCD modules often need to be taken and placed. Employees may hold the FPC and twist the FPC, which may cause the binding position of the FPC to tear or fall off under the twisting action. If the tear or fall off is large, it can be easily identified in the subsequent inspection, and these defective products will not flow into the subsequent whole machine. If these tears or falls off are relatively minor, they may not be detected in time, causing these slightly torn or fallen defective products to flow into good products. In the subsequent assembly and use of the whole machine, it may cause product quality problems, thereby increasing the defective rate of the whole machine. Utility Model Content
[0003] The technical problem to be solved by the utility model is.
[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 liquid crystal display screen with an FPC binding position that is resistant to torsion and tearing, comprising a lower substrate and an upper substrate arranged above the lower substrate, the lower substrate being longer than the upper substrate and extending outward to form a step, a driver IC and an FPC being bound to the lower surface of the lower substrate located at the step, notches being provided on both sides of the binding end of the FPC, a plurality of normal Pin feet being provided on the binding end of the FPC located between the two notches, and a plurality of empty Pin feet being provided on the binding end of the FPC located outside the two notches.
[0006] As a preferred implementation of the FPC binding position torsion-resistant and tear-resistant liquid crystal display screen provided by the utility model, the cross-sectional shape of the notch is U-shaped.
[0007] As a preferred implementation of the FPC binding position torsion tear resistant liquid crystal display screen provided by the utility model, it also includes an upper polarizer and a cover plate arranged above the upper substrate.
[0008] As a preferred embodiment of the FPC binding position anti-twisting and tearing liquid crystal display 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 the grooves.
[0009] As a preferred implementation of the FPC binding position torsion-resistant and tear-resistant liquid crystal display screen provided by the utility model, the groove is a closing groove that is narrow on the outside and wide on the inside.
[0010] As a preferred implementation of the FPC binding position torsion-tear resistant liquid crystal display screen provided by the utility model, the cross-sectional shape of the groove is an isosceles trapezoid.
[0011] As a preferred implementation of the FPC binding position torsion-resistant and tear-resistant liquid crystal display screen provided by the utility model, two reinforcing plates staggered with each other are provided on both sides of the FPC.
[0012] As a preferred implementation of the FPC binding position torsion-resistant and tear-resistant liquid crystal display screen provided by the utility model, the widths of the two reinforcing plates are different.
[0013] As a preferred implementation of the FPC binding position torsion-resistant and tear-resistant liquid crystal display screen provided by the utility model, the material of the reinforcement plate is FR4, PI or stainless steel.
[0014] As a preferred implementation of the FPC binding position torsion tear resistant liquid crystal display screen provided by the utility model, the outer surfaces of the two reinforcing plates are both provided with a surface treatment layer for improving the surface roughness.
[0015] The utility model has the following beneficial effects:
[0016] Since there are notches on both sides of the binding end of the FPC, and a plurality of normal Pin feet are arranged on the binding end of the FPC located between the two notches, and a plurality of empty Pin feet are arranged on the binding end of the FPC located outside the two notches, it is equivalent to designing two ears on both sides of the normal FPC binding end. The Pin feet on these two ears are empty and have no signals, so that when the FPC is torn apart under the action of torsion, these two ears will be torn first. This not only protects the normal Pin feet in the middle for normal use, but also makes it easy to judge whether there is a quality risk in the appearance, because when the ears are completely torn, they can be easily checked even with the naked eye, and the products with completely torn ears are listed as products with quality risks and picked out to prevent them from being mixed into good products and flowing into the subsequent assembly of the whole machine to prevent product quality problems, thereby reducing the defective rate of the whole machine. 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 an FPC binding position that resists torsion and tearing.
[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0020] Figure 3 This is a schematic diagram of the structure of Example 2.
[0021] Figure 4 This is a schematic diagram of the structure of Example 3.
[0022] Description of Figure Numbers:
[0023] Lower substrate 1; upper substrate 2; driver IC 3; FPC 4; notch 41; normal pin 42; empty pin 43;
[0024] Upper polarizer 5; cover plate 6; plastic layer 7; groove 61; reinforcing plate 8. DETAILED DESCRIPTION
[0025] 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.
[0026] 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.
[0027] 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.
[0028] The utility model provides a liquid crystal display screen with an FPC binding position that resists torsion and tearing, comprising a lower substrate and an upper substrate arranged above the lower substrate, the lower substrate being longer than the upper substrate and extending outward to form a step, a driving IC and an FPC being bound to the lower surface of the lower substrate located at the step, notches being provided on both sides of the binding end of the FPC, a plurality of normal Pin feet being provided on the binding end of the FPC located between two of the notches, and a plurality of empty Pin feet being provided on the binding end of the FPC located outside the two notches.
[0029] Since there are notches on both sides of the binding end of the FPC, and a plurality of normal Pin feet are arranged on the binding end of the FPC located between the two notches, and a plurality of empty Pin feet are arranged on the binding end of the FPC located outside the two notches, it is equivalent to designing two ears on both sides of the normal FPC binding end. The Pin feet on these two ears are empty and have no signals, so that when the FPC is torn apart under the action of torsion, these two ears will be torn first. This not only protects the normal Pin feet in the middle for normal use, but also makes it easy to judge whether there is a quality risk in the appearance, because when the ears are completely torn, they can be easily checked even with the naked eye, and the products with completely torn ears are listed as products with quality risks and picked out to prevent them from being mixed into good products and flowing into the subsequent assembly of the whole machine to prevent product quality problems, thereby reducing the defective rate of the whole machine.
[0030] 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.
[0031] Example 1
[0032] See also Figure 1 and Figure 2, a liquid crystal display screen with an FPC4 binding position that is resistant to torsion and tearing provided by the utility model, comprising a lower substrate 1 and an upper substrate 2 arranged above the lower substrate 1, the lower substrate 1 is longer than the upper substrate 2 and extends outward to form a step, a driving IC 3 and an FPC4 are bound to the lower surface of the lower substrate 1 located at the step, notches 41 are provided on both sides of the binding end of the FPC4, a plurality of normal Pin feet 42 are provided on the binding end of the FPC4 located between the two notches 41, and a plurality of empty Pin feet 43 are provided on the binding end of the FPC4 located outside the two notches 41. Since notches 41 are provided on both sides of the binding end of FPC4, and a plurality of normal Pin feet 42 are arranged on the binding end of FPC4 located between the two notches 41, and a plurality of empty Pin feet 43 are arranged on the binding end of FPC4 located outside the two notches 41, it is equivalent to designing two ears on both sides of the normal binding end of FPC4, and the Pin feet on these two ears are empty feet without any signals, so that when FPC4 is torn apart under the action of torsion, these two ears will be torn first, which can not only protect the normal Pin feet 42 in the middle for normal use, but also can easily judge whether there is a quality risk in the appearance, because when the ears are completely torn, even the naked eye can easily check it out, and the products with such completely torn ears are listed as products with quality risks and picked out to prevent them from being mixed into good products and flowing into the subsequent assembly of the whole machine to prevent product quality problems, thereby reducing the defective rate of the whole machine.
[0033] Furthermore, the cross-sectional shape of the notch 41 is U-shaped, which is easier to manufacture and can effectively reduce the manufacturing cost.
[0034] Example 2
[0035] See also Figure 3As a further optimization scheme of Example 1, in this embodiment, an upper polarizer 5 and a cover plate 6 are also provided above the upper substrate 2. The upper surface of the cover plate 6 is covered with a plastic layer 7. The upper surface of the cover plate 6 is etched to form a plurality of grooves 61 downwardly. A portion of the lower surface of the plastic layer 7 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 7 can be tightly bonded to the groove 61 to prevent the cover plate 6 and the plastic layer 7 from falling off. Since the upper part of the cover plate 6 is covered with a plastic layer 7, and the upper surface of the cover plate 6 is etched to form a plurality of grooves 61, and the plastic layer 7 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. The surface of the groove 61 with a certain degree of roughness can enhance the bonding force between the groove 61 and the plastic layer 7, thereby reducing the possibility of separation of the groove 61 from the plastic layer 7. When the LCD screen is hit or falls, the plastic layer 7 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 7 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 7 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.
[0036] 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 groove 61 is in the shape of an elongated strip. The isosceles trapezoid-shaped groove 61 can allow the plastic layer 7 to be tightly embedded in the groove 61, thereby preventing the groove 61 from separating from the plastic layer 7, thereby preventing the cover plate 6 from falling off from the plastic layer 7. The elongated groove 61 can increase the fitting portion between the plastic layer 7 and the groove 61, thereby increasing the fitting strength between the groove 61 and the plastic layer 7.
[0037] Example 3
[0038] See also Figure 4As a further optimization scheme of Example 1, in this embodiment, two reinforcing plates 8 that are staggered are provided on both sides of FPC4. In the traditional FPC4 design, reinforcing plates 8 are usually not provided or are provided at the same position and have the same width, resulting in the pressure applied being concentrated on the same straight line when plugging and unplugging FPC4, causing a slight break in the FPC4 line. Since the two reinforcing plates 8 of the FPC4 provided by the utility model are respectively located on both sides of the connecting portion and are staggered, when the FPC4 is pulled out, the pressure exerted by the reinforcing plates 8 on the FPC4 is not on the same line segment, and the stress will not be concentrated on the same straight line when bending, thereby avoiding stress concentration and the problem of easy slight break in the line at the interface end, thereby improving product yield.
[0039] Furthermore, the two mutually staggered reinforcing plates 8 referred to in the utility model can be respectively arranged at two different positions; or the center point position can be the same, but the widths of the two reinforcing plates 8 are different. It is sufficient to make the stress of the two reinforcing plates 8 not be concentrated on the same straight line when they are bent. This can avoid stress concentration and the problem of easy micro-breakage of the line at the interface end, thereby improving the product yield. In this embodiment, the reinforcing plates 8 include a first reinforcing plate and a second reinforcing plate. The widths of each reinforcing plate 8 are different, and their center points are on the same horizontal line, so that the edges of the reinforcing plates 8 are staggered and not concentrated on the same straight line.
[0040] Furthermore, the material of the reinforcing plate 8 is FR4, PI or stainless steel. In other embodiments, if the heat generated by the FPC 4 is relatively large, a heat dissipation material with a better heat dissipation effect, such as an aluminum foil reinforcing plate 8, may also be used.
[0041] Furthermore, the outer surfaces of the first reinforcing plate and the second reinforcing plate are both provided with a surface treatment layer for increasing the surface roughness, so as to increase the friction between the worker and the first reinforcing plate and the second reinforcing plate, so that the FPC4 is easy to pull out.
[0042] Furthermore, the surface treatment layer is provided with diamond knurling on the outer surfaces of the first reinforcement plate and the second reinforcement plate, so that the FPC4 can be pulled out more easily, reducing the risk of the FPC4 circuit being broken.
[0043] 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.
[0044] 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 anti-twisting and tearing FPC binding position, characterized in that: It includes a lower substrate and an upper substrate arranged above the lower substrate, the lower substrate is longer than the upper substrate and extends outward to form a step, the lower surface of the lower substrate located at the step is bound with a driver IC and an FPC, and notches are provided on both sides of the binding end of the FPC, a plurality of normal pins are provided on the binding end of the FPC located between the two notches, and a plurality of empty pins are provided on the binding end of the FPC located outside the two notches.
2. The FPC binding position anti-twisting liquid crystal display screen according to claim 1, characterized in that: The cross-sectional shape of the notch is U-shaped.
3. The FPC binding position anti-twisting liquid crystal display screen according to claim 1, characterized in that: It also includes an upper polarizer and a cover plate arranged above the upper substrate.
4. The liquid crystal display screen with anti-torsion tearing of FPC binding position according to claim 3, 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.
5. The liquid crystal display screen with anti-torsion tearing of FPC binding position according to claim 4, characterized in that: The groove is a closing groove which is narrow outside and wide inside.
6. The liquid crystal display screen with anti-twisting FPC binding position according to claim 5, characterized in that: The cross-sectional shape of the groove is an isosceles trapezoid.
7. The liquid crystal display screen with anti-twisting FPC binding position according to claim 1, characterized in that: Two reinforcing plates staggered with each other are arranged on both sides of the FPC.
8. The liquid crystal display screen with anti-twisting FPC binding position according to claim 7, characterized in that: The widths of the two reinforcing plates are different.
9. The liquid crystal display screen with anti-twisting FPC binding position according to claim 7, characterized in that: The reinforcement plate is made of FR4, PI or stainless steel.
10. The liquid crystal display screen with anti-twisting FPC binding position according to claim 7, characterized in that: The outer surfaces of the two reinforcing plates are both provided with a surface treatment layer for improving the surface roughness.