Liquid crystal display screen facilitating replacement of fingerprint induction IC

Abstract

The utility model discloses a liquid crystal display screen convenient to replace a fingerprint sensing IC, which comprises a rubber frame, a PCB (printed circuit board), an FPC (flexible printed circuit) and the fingerprint sensing IC, the lower surface of the rubber frame is provided with a circuit board groove, and the circuit board groove is provided with a fingerprint groove through hole; the PCB is fixed on the lower surface of the rubber frame, and a connector female seat is arranged on the lower surface of the PCB; the FPC is arranged on the circuit board groove, a connector male seat is arranged on the FPC, and the connector male seat is connected with the connector female seat; and the fingerprint sensing IC is fixed on the upper surface of the FPC and is arranged in the fingerprint groove through hole. The connector male seat is arranged on the FPC, the connector male seat is connected with the connector female seat instead of adopting a welding mode, so that the situation that the fingerprint sensing IC cannot be replaced due to dead welding is avoided, and the fingerprint sensing IC can be easily replaced by adopting the connector mode for connection, so that the cost of replacing the fingerprint sensing IC is reduced, and the competitiveness of a product 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 which is convenient for replacing a fingerprint sensing IC. Background Art

[0002] Fingerprint sensing ICs usually use high-end optical sensing ICs and low-end optical sensing ICs, and customers usually use one of these two types of fingerprint sensing ICs between their high-end and low-end products. However, traditional fingerprint sensing ICs are usually soldered on FPCs. When one fingerprint sensing IC needs to be replaced with another fingerprint sensing IC, the installation and disassembly of the fingerprint sensing IC is very difficult, resulting in a high cost for replacing the fingerprint sensing IC, which reduces the competitiveness of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to design a liquid crystal display screen which is convenient for replacing a fingerprint sensing IC, so as to reduce the cost of replacing the fingerprint sensing IC and improve the competitiveness of the product.

[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 which is easy to replace a fingerprint sensing IC, comprising a rubber frame, a PCB board, an FPC and a fingerprint sensing IC, wherein a circuit board groove is provided on the lower surface of the rubber frame, and a fingerprint groove through hole is provided on the circuit board groove; the PCB board is fixed on the lower surface of the rubber frame, and a connector female seat is provided on the lower surface of the PCB board; the FPC is arranged on the circuit board groove, and a connector male seat is provided on the FPC, and the connector male seat is connected to the connector female seat; the fingerprint sensing IC is fixed on the upper surface of the FPC and arranged in the fingerprint groove through hole.

[0006] As a preferred implementation of the liquid crystal display screen that is easy to replace the fingerprint sensing IC provided by the utility model, the PCB board is provided with a guide through hole that allows the FPC to pass through.

[0007] As a preferred implementation of the liquid crystal display screen for easy replacement of fingerprint sensing IC provided by the utility model, a reinforcing plate is provided on the lower surface of the FPC, and the reinforcing plate is located directly below the fingerprint sensing IC.

[0008] As a preferred implementation of the liquid crystal display screen that is easy to replace the fingerprint sensing IC provided by the utility model, the projection of the reinforcement plate on the FPC can completely cover the projection of the fingerprint sensing IC on the FPC, and a reinforcement groove corresponding to the shape and position of the reinforcement plate is opened on the circuit board groove.

[0009] As a preferred implementation of the liquid crystal display screen for easy replacement of fingerprint sensing IC provided by the utility model, a backlight module is arranged in the rubber frame, a display module is arranged on the backlight module, and a cover plate is arranged on the display module.

[0010] As a preferred implementation of the liquid crystal display screen for easy replacement of fingerprint sensing IC provided by the utility model, the upper surface and the lower surface of the FPC are covered with EMI shielding film, and the EMI shielding film is provided with an avoidance position at the connector male seat.

[0011] As a preferred implementation of the liquid crystal display screen for easy replacement of fingerprint sensing IC provided by the utility model, the edge of the EMI shielding film located at the avoidance position is more than 0.5 mm away from the edge of the connector male seat.

[0012] As a preferred implementation of the liquid crystal display screen for easy replacement of fingerprint sensing IC provided by the utility model, a PET film is arranged between the FPC and the EMI shielding film, and the edge of the PET film close to the avoidance position exceeds the edge of the EMI shielding film.

[0013] As a preferred implementation of the liquid crystal display screen for easy replacement of fingerprint sensing IC provided by the utility model, the edge of the PET film close to the avoidance position exceeds the edge of the EMI shielding film by more than 0.5 mm.

[0014] As a preferred implementation of the liquid crystal display screen with easy replacement of fingerprint sensing IC provided by the utility model, a double-sided adhesive is provided at the bottom of the PET film.

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

[0016] Since the FPC is provided with a male connector, the male connector is connected to the female connector instead of welding to avoid being welded and unable to be replaced. The use of a connector for connection can make the fingerprint sensing IC easy to replace, so as to reduce the cost of replacing the fingerprint sensing IC and improve the competitiveness of the product. The lower surface of the rubber frame is provided with a circuit board slot for placing the FPC and a fingerprint slot through hole for placing the fingerprint sensing IC, which can be used to place and hide the FPC and the fingerprint sensing IC without increasing the thickness 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 that is convenient for replacing a fingerprint sensing IC.

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the middle rubber frame.

[0021] Figure 4 for Figure 1 Bottom view of the PCB board.

[0022] Figure 5 Schematic diagram of the improved structure at the FPC.

[0023] Description of Figure Numbers:

[0024] Plastic frame 1; PCB board 2; FPC 3; fingerprint sensor IC 4; circuit board slot 11; fingerprint slot through hole 12; connector female seat 5; connector male seat 6;

[0025] Guide through hole 21; reinforcement plate 7; reinforcement groove 13;

[0026] Backlight module 100; display module 200;

[0027] EMI shielding film 8; PET film 9. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The utility model provides a liquid crystal display screen which is convenient for replacing a fingerprint sensing IC. The liquid crystal display screen comprises a plastic frame, a PCB board, an FPC and a fingerprint sensing IC. A circuit board groove is provided on the lower surface of the plastic frame, and a fingerprint groove through hole is provided on the circuit board groove. The PCB board is fixed on the lower surface of the plastic frame, and a connector female seat is provided on the lower surface of the PCB board. The FPC is arranged on the circuit board groove, and a connector male seat is provided on the FPC, and the connector male seat is connected to the connector female seat. The fingerprint sensing IC is fixed on the upper surface of the FPC and is arranged in the fingerprint groove through hole.

[0032] Since the FPC is provided with a male connector, the male connector is connected to the female connector instead of welding to avoid being welded and unable to be replaced. The use of a connector for connection can make the fingerprint sensing IC easy to replace, so as to reduce the cost of replacing the fingerprint sensing IC and improve the competitiveness of the product. The lower surface of the rubber frame is provided with a circuit board slot for placing the FPC and a fingerprint slot through hole for placing the fingerprint sensing IC, which can be used to place and hide the FPC and the fingerprint sensing IC without increasing the thickness of the product.

[0033] 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.

[0034] See also Figures 1 to 4, a liquid crystal display screen that is easy to replace a fingerprint sensing IC provided by the utility model, comprises a plastic frame 1, a PCB board 2, an FPC 3 and a fingerprint sensing IC 4, a circuit board slot 11 is provided on the lower surface of the plastic frame 1, and a fingerprint slot through hole 12 is provided on the circuit board slot 11; the PCB board 2 is fixed on the lower surface of the plastic frame 1, and a connector female seat 5 is provided on the lower surface of the PCB board 2; the FPC 3 is arranged on the circuit board slot 11, and a connector male seat 6 is provided on the FPC 3, and the connector male seat 6 is connected to the connector female seat 5; the fingerprint sensing IC 4 is fixed on the upper surface of the FPC 3 and is arranged in the fingerprint slot through hole 12. Since a connector male socket 6 is provided on the FPC3, the connector male socket 6 is connected to the connector female socket 5 instead of welding to avoid being welded and unable to be replaced. The use of a connector for connection can make the fingerprint sensing IC4 easy to replace, so as to reduce the cost of replacing the fingerprint sensing IC4 and improve the competitiveness of the product. A circuit board slot 11 for placing the FPC3 and a fingerprint slot through hole 12 for placing the fingerprint sensing IC4 are provided on the lower surface of the rubber frame 1, which can be used to place and hide the FPC3 and the fingerprint sensing IC4 without increasing the thickness of the product.

[0035] Furthermore, the PCB board 2 is provided with a guide through hole 21 for the FPC 3 to pass through, so as to shorten the winding length of the FPC 3 and reduce the cost of the product.

[0036] Furthermore, a reinforcing plate 7 is provided on the lower surface of the FPC 3 , and the reinforcing plate 7 is located directly below the fingerprint sensing IC 4 to enhance the strength of the fingerprint sensing IC 4 , avoid damage to the FPC 3 and facilitate assembly and disassembly.

[0037] Furthermore, the projection of the reinforcement plate 7 on the FPC3 can completely cover the projection of the fingerprint sensing IC4 on the FPC3, and a reinforcement groove 13 corresponding to the shape and position of the reinforcement plate 7 is opened on the circuit board groove 11, so that the reinforcement plate 7 can better provide support for the fingerprint sensing IC4, and the reinforcement plate 7 can be used to lock with the rubber frame 1.

[0038] Furthermore, a backlight module 100 is disposed in the plastic frame 1 , a display module 200 is disposed on the backlight module 100 , and a cover plate is disposed on the display module 200 .

[0039] See also Figure 5 As a further optimization scheme of Example 1, in this embodiment, a connector male seat 6 is provided on the upper surface of FPC3, and both the upper and lower surfaces of FPC3 are covered with EMI shielding films 8, and the EMI shielding films 8 are provided with an escape position at the connector male seat 6. Since both the upper and lower surfaces of FPC3 are provided with EMI shielding films 8, the electromagnetic shielding capability of FPC3 can be greatly improved, the stability of signal transmission is improved, various functional problems and poor display effects are avoided, and the competitiveness of the product is improved.

[0040] Furthermore, the edge of the EMI shielding film 8 located at the avoidance position is more than 0.5 mm away from the edge of the connector male socket 6, thereby preventing the edge of the EMI shielding film 8 from contacting the connector male socket 6 and causing a circuit break.

[0041] Furthermore, a PET film 9 is provided between the FPC 3 and the EMI shielding film 8, and the edge of the PET film 9 near the avoidance position exceeds the edge of the EMI shielding film 8. By extending the edge of the PET film 9 near the connector male seat 6, the edge of the PET film 9 is pulled away from the edge of the EMI shielding film 8 by a certain distance, so that even if there is a certain operation error during attachment, the edge of the EMI shielding film 8 can be ensured not to touch the edge of the connector male seat 6, thereby insulating the edge of the EMI shielding film 8 and preventing the occurrence of a short circuit problem caused by the edge of the EMI shielding film 8 touching the connector male seat 6, thereby improving the attachment efficiency and production yield.

[0042] Furthermore, the edge of the PET film 9 near the avoidance position exceeds the edge of the EMI shielding film 8 by more than 0.5 mm, so as to ensure that the edge of the EMI shielding film 8 does not touch the connector male seat 6, thereby insulating the edge of the EMI shielding film 8 and preventing the occurrence of a short circuit problem caused by the edge of the EMI shielding film 8 touching the connector male seat 6, thereby improving the attachment efficiency and production yield.

[0043] Further, the bottom of the PET film 9 is provided with a double-sided adhesive or the bottom of the PET film 9 is coated with glue. Since some PET films 9 are not sticky or have insufficient stickiness, the bottom of the PET film 9 is provided with a double-sided adhesive or coated with glue, so that the PET film 9 can be adhered to the FPC 3.

[0044] 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.

[0045] 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 that is easy to replace fingerprint sensing IC, characterized in that: It includes: A rubber frame, a circuit board slot is formed on the lower surface of the rubber frame, and a fingerprint slot through hole is formed on the circuit board slot; A PCB board, which is fixed on the lower surface of the plastic frame, and a connector female seat is provided on the lower surface of the PCB board; An FPC is arranged on the circuit board slot, and a connector male seat is arranged on the FPC, and the connector male seat is connected to the connector female seat; The fingerprint sensing IC is fixed on the upper surface of the FPC and is arranged in the fingerprint slot through hole.

2. The liquid crystal display screen for facilitating replacement of fingerprint sensing IC according to claim 1, characterized in that: The PCB board is provided with a guide through hole for the FPC to pass through.

3. The liquid crystal display screen for facilitating replacement of fingerprint sensing IC according to claim 1, characterized in that: A reinforcing plate is disposed on the lower surface of the FPC, and the reinforcing plate is located directly below the fingerprint sensing IC.

4. The liquid crystal display screen for facilitating replacement of fingerprint sensing IC according to claim 3, characterized in that: The projection of the reinforcement plate on the FPC can completely cover the projection of the fingerprint sensing IC on the FPC, and a reinforcement groove corresponding to the shape and position of the reinforcement plate is opened on the circuit board groove.

5. The liquid crystal display screen for facilitating replacement of fingerprint sensing IC according to claim 1, characterized in that: A backlight module is arranged in the rubber frame, a display module is arranged on the backlight module, and a cover plate is arranged on the display module.

6. The liquid crystal display screen for facilitating replacement of fingerprint sensing IC according to claim 1, characterized in that: The upper surface and the lower surface of the FPC are both covered with EMI shielding films, and the EMI shielding films are provided with an avoidance position at the connector male seat.

7. The liquid crystal display screen for facilitating replacement of fingerprint sensing IC according to claim 6, characterized in that: The edge of the EMI shielding film located at the avoidance position is more than 0.5 mm away from the edge of the connector male seat.

8. The liquid crystal display screen for facilitating replacement of fingerprint sensing IC according to claim 6, characterized in that: A PET film is arranged between the FPC and the EMI shielding film, and an edge of the PET film close to the avoidance position exceeds an edge of the EMI shielding film.

9. The liquid crystal display screen for facilitating replacement of fingerprint sensing IC according to claim 8, characterized in that: The edge of the PET film close to the avoidance position exceeds the edge of the EMI shielding film by more than 0.5 mm.

10. The liquid crystal display screen for facilitating replacement of fingerprint sensing IC according to claim 8, characterized in that: The bottom of the PET film is provided with double-sided adhesive.

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