Liquid crystal display screen capable of preventing lamp explosion

Abstract

The utility model discloses a liquid crystal display screen capable of preventing lamp explosion, which comprises a light guide plate, a display module, an FPC (flexible printed circuit) and an LED (light-emitting diode) lamp, one end of the light guide plate is provided with an oblique notch, and the oblique notch is a light incident side; the display module is arranged above the light guide plate; the FPC is led out from the display module, the FPC is bent to the lower surface of the light guide plate, the FPC comprises a main screen FPC and a backlight FPC, the main screen FPC and the backlight FPC which are located at the leading-out front end are fixed together, and a boundary gap is formed between the main screen FPC and the backlight FPC which are located from the leading-out middle end to the leading-out tail end so that the main screen FPC and the backlight FPC can be bent separately; and the LED lamp is fixed on the backlight FPC and is aligned to the oblique notch on the light incoming side. Due to the fact that the boundary notch is formed between the main screen FPC and the backlight FPC, the main screen FPC and the backlight FPC are bent separately, the arch force of the main screen FPC and the backlight FPC is dispersed, the phenomenon that an LED lamp on the backlight FPC is exploded due to the fact that the arch force of the backlight FPC is too large 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 liquid crystal display screen capable of preventing lamp explosion. Background Art

[0002] In order to save space and FPC, the backlight FPC of many mobile phones is integrated into the main screen FPC and fixed by the adhesive force of double-sided adhesive and protective paper. This can easily cause the LED lamp on the backlight FPC to explode due to excessive FPC arching force, making it impossible for the LCD screen to display normally, resulting in an increase in the defective rate of the LCD screen, an increase in the production and manufacturing cost of the LCD screen, and a reduction in the product competitiveness of the LCD screen. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to avoid excessive arch force on the backlight FPC causing the LED lamp to explode, ensure the normal display of the liquid crystal display screen, reduce the defective rate of the liquid crystal display screen, and further reduce the production cost of the liquid crystal display screen, and improve the product competitiveness of the liquid crystal display screen.

[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 that prevents lamp explosion, which includes a light guide plate, a display module, an FPC and an LED lamp, wherein an oblique cut is provided at one end of the light guide plate, and the oblique cut is a light incident side; the display module is arranged above the light guide plate; the FPC is led outward from the display module, and the FPC is bent to the lower surface of the light guide plate, and the FPC includes a main screen FPC and a backlight FPC, the main screen FPC and the backlight FPC located at the front end of the lead-out are fixed together, and a dividing notch is provided between the main screen FPC and the backlight FPC located at the middle end of the lead-out to the end of the lead-out, so that the main screen FPC and the backlight FPC are bent separately; the LED lamp is fixed on the backlight FPC and aligned with the oblique cut on the light incident side.

[0006] As a preferred implementation of the liquid crystal display screen for preventing lamp explosion provided by the utility model, the minimum width of the dividing notch is greater than or equal to 0.8 mm.

[0007] As a preferred implementation of the liquid crystal display screen for preventing lamp explosion provided by the utility model, the backlight FPC located at the LED lamp is a double-layer FPC.

[0008] As a preferred implementation of the liquid crystal display screen for preventing lamp explosion provided by the utility model, the upper surface of the backlight FPC is silk-screened with white oil.

[0009] As a preferred implementation of the liquid crystal display screen for preventing lamp explosion provided by the utility model, the lower surface of the backlight FPC is silk-screened with black oil.

[0010] As a preferred implementation of the LCD display screen for preventing lamp explosion provided by the utility model, a rubber frame is arranged under the light guide plate, a positioning column is arranged on the rubber frame, and a positioning hole is arranged on the backlight FPC near the LED lamp, and the position and shape of the positioning hole correspond to the position and shape of the positioning column.

[0011] As a preferred implementation of the liquid crystal display screen for preventing lamp explosion provided by the utility model, there are two positioning columns.

[0012] As a preferred implementation of the liquid crystal display screen for preventing lamp explosion provided by the utility model, the straight-line distance between the two positioning posts is 0.1 mm.

[0013] As a preferred implementation of the liquid crystal display screen for preventing lamp explosion provided by the utility model, a light-shielding paper is pasted on the lower surface of the backlight FPC.

[0014] As a preferred implementation of the liquid crystal display screen for preventing lamp explosion provided by the utility model, a reflective film is pasted on the lower surface of the light guide plate.

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

[0016] Due to the boundary gap between the main screen FPC and the backlight FPC, the main screen FPC and the backlight FPC are bent separately to disperse the arch force, thereby preventing the LED lamp on the backlight FPC from exploding due to excessive arch force, ensuring the normal display of the LCD screen, reducing the defective rate of the LCD screen, and further reducing the production cost of the LCD screen, thereby improving the product competitiveness of the LCD screen. 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 for preventing lamp explosion.

[0019] Figure 2 for Figure 1 Bottom view of the middle light guide plate.

[0020] Figure 3for Figure 1 Top view of the middle light guide plate.

[0021] Figure 4 for Figure 3 Schematic diagram of the structure of FPC.

[0022] Description of Figure Numbers:

[0023] Light guide plate 1; display module 2; FPC 3; LED lamp 4; main screen FPC 31; backlight FPC 32; dividing notch 33;

[0024] Plastic frame 5; positioning column 51; shading paper 6. 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 for preventing lamp explosion, which comprises a light guide plate, a display module, an FPC and an LED lamp, wherein an oblique cut is provided at one end of the light guide plate, and the oblique cut is a light incident side; the display module is arranged above the light guide plate; the FPC is led outward from the display module, and the FPC is bent to the lower surface of the light guide plate, and the FPC comprises a main screen FPC and a backlight FPC, the main screen FPC and the backlight FPC located at the leading-out front end are fixed together, and a dividing notch is provided between the main screen FPC and the backlight FPC located at the leading-out middle end to the leading-out end so that the main screen FPC and the backlight FPC are bent separately; the LED lamp is fixed on the backlight FPC and is aligned with the oblique cut at the light incident side.

[0029] Due to the boundary gap between the main screen FPC and the backlight FPC, the main screen FPC and the backlight FPC are bent separately to disperse the arch force, thereby preventing the LED lamp on the backlight FPC from exploding due to excessive arch force, ensuring the normal display of the LCD screen, reducing the defective rate of the LCD screen, and further reducing the production cost of the LCD screen, thereby improving the product competitiveness of the LCD screen.

[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] See also Figures 1 to 4, which is a liquid crystal display screen for preventing lamp explosion provided by the utility model, comprising a light guide plate 1, a display module 2, an FPC3 and an LED lamp 4, wherein an oblique cut is provided at one end of the light guide plate 1, and the oblique cut is a light incident side; the display module 2 is arranged above the light guide plate 1; the FPC3 is led outward from the display module 2, and the FPC3 is bent to the lower surface of the light guide plate 1, and the FPC3 comprises a main screen FPC31 and a backlight FPC32, the main screen FPC31 and the backlight FPC32 located at the front end of the lead-out are fixed together, and a dividing notch 33 is provided between the main screen FPC31 and the backlight FPC32 located at the middle end of the lead-out to the end of the lead-out, so that the main screen FPC31 and the backlight FPC32 are bent separately; the LED lamp 4 is fixed on the backlight FPC32 and is aligned with the oblique cut on the light incident side. Since a dividing notch 33 is provided between the main screen FPC31 and the backlight FPC32, the main screen FPC31 and the backlight FPC32 are bent separately to disperse their arching force, thereby preventing the LED lamp 4 on the backlight FPC32 from exploding due to excessive arching force, thereby ensuring the normal display of the LCD screen, reducing the defective rate of the LCD screen, and further reducing the production cost of the LCD screen, thereby improving the product competitiveness of the LCD screen.

[0032] Furthermore, the width of the dividing gap 33 is greater than or equal to 0.8 mm, that is, the backlight FPC32 part where the backlight is placed and the wiring part of the main screen FPC31 are required to have a design gap of 0.8 mm or more to facilitate the production of the FPC3 supplier.

[0033] Furthermore, the backlight FPC 32 located at the LED lamp 4 is a double-layer FPC 3 to improve the strength of the backlight FPC 32 located at the LED lamp 4 and avoid damage to the backlight FPC 32 there.

[0034] Furthermore, the upper surface of the backlight FPC 32 is silk-screened with white oil to increase the utilization rate of the light.

[0035] Furthermore, the lower surface of the backlight FPC 32 is silk-screened with black oil to prevent light leakage from the back side of the backlight FPC 32 .

[0036] See also Figures 1 to 4 As a further optimization scheme of Example 1, in this embodiment, a rubber frame 5 is provided below the light guide plate 1, a positioning column 51 is provided on the rubber frame 5, and a positioning hole is provided on the backlight FPC 32 near the LED lamp 4. The position and shape of the positioning hole correspond to the position and shape of the positioning column 51. In this embodiment, there are two positioning columns 51, and the straight-line distance between the two positioning columns 51 is 0.1 mm to reduce the deviation of the LED lamp 4 and avoid affecting the effect of the LED lamp 4.

[0037] Furthermore, a shading paper 6 is pasted on the lower surface of the backlight FPC32. The purpose of the shading paper 6 is to fix the backlight FPC32 here to prevent the backlight FPC32 from falling out, and to seal the gap between the backlight FPC32, the plastic shell and the light guide plate 1 to prevent light leakage.

[0038] Furthermore, a reflective film is pasted on the lower surface of the light guide plate 1 to increase the utilization rate of light.

[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 liquid crystal display screen for preventing lamp explosion, characterized in that: It includes: A light guide plate, one end of which is provided with an oblique cutout, the oblique cutout being a light incident side; A display module, which is arranged above the light guide plate; An FPC is led outward from the display module, the FPC is bent to the lower surface of the light guide plate, the FPC includes a main screen FPC and a backlight FPC, the main screen FPC and the backlight FPC at the leading-out front end are fixed together, and a dividing notch is provided between the main screen FPC and the backlight FPC at the leading-out middle end to the leading-out end so that the main screen FPC and the backlight FPC are bent separately; The LED lamp is fixed on the backlight FPC and is aligned with the oblique cutout on the light incident side.

2. The LCD display screen for preventing lamp explosion according to claim 1, characterized in that: The minimum width of the boundary gap is greater than or equal to 0.8 mm.

3. The LCD display screen for preventing lamp explosion according to claim 1, characterized in that: The backlight FPC located at the LED lamp is a double-layer FPC.

4. The LCD display screen for preventing lamp explosion according to claim 1, characterized in that: The upper surface of the backlight FPC is silk-screened with white oil.

5. The LCD display screen for preventing lamp explosion according to claim 1, characterized in that: The lower surface of the backlight FPC is screen-printed with black oil.

6. The LCD display screen for preventing lamp explosion according to claim 1, characterized in that: A plastic frame is arranged below the light guide plate, a positioning column is arranged on the plastic frame, and a positioning hole is arranged on the backlight FPC near the LED lamp, and the position and shape of the positioning hole correspond to the position and shape of the positioning column.

7. The LCD display screen for preventing lamp explosion according to claim 6, characterized in that: There are two positioning columns.

8. The LCD display screen for preventing lamp explosion according to claim 7, characterized in that: The straight-line distance between the two positioning posts is 0.1 mm.

9. The LCD display screen for preventing lamp explosion according to claim 1, characterized in that: The lower surface of the backlight FPC is pasted with light-shielding paper.

10. The LCD display screen for preventing lamp explosion according to claim 1, characterized in that: A reflective film is pasted on the lower surface of the light guide plate.

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