Liquid crystal display screen capable of avoiding iron stand on top surface of FPC (Flexible Printed Circuit)

Abstract

The utility model discloses a liquid crystal display screen capable of avoiding an iron stand on the top surface of an FPC (Flexible Printed Circuit), which comprises a backlight module and a display module arranged above the backlight module, and the display module comprises a lower polaroid, a lower substrate, an upper substrate and an upper polaroid which are sequentially overlapped from bottom to top, the lower substrate is longer than the upper substrate to form a step, an IC (integrated circuit) and an FPC (flexible printed circuit) are bound on the upper surface of the lower substrate positioned at the step, a surface iron frame is arranged above the upper polaroid, the surface iron frame comprises a top plate and a side wall extending downwards from the edge of the top plate, and the upper polaroid is arranged on the side wall. The backlight module and the display module are arranged in a space enclosed by the top plate and the side wall, the side wall close to one side of the FPC is provided with a notch for avoiding the FPC, and the top plate positioned above the FPC and the IC is provided with a bent pressing bone formed by bending. While the bending space of the FPC is enlarged, the problem that the side wall of the surface iron stand is jacked up by the arch force when the FPC is bent is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, in particular to a liquid crystal display screen which avoids an FPC top high surface iron frame. Background Art

[0002] The conventional structure of the LCD screen is generally composed of a display module, a backlight module, a surface iron frame and a casing. The display module is generally fixed to the backlight module by double-sided tape, and the FPC is bent to the back of the backlight module, and then the surface iron frame is buckled to wrap the display module and the backlight module. For the LCD screen with FPC and the FPC needs to be bent to the back of the backlight module, when there is a surface iron frame on the structure, it is necessary to consider whether the bending space of the FPC is sufficient. In order to ensure the reliability of the FPC, protective glue will be applied to protect the FPC after it is bound to the display module. The controllable glue dispensing width of the protective glue is 1.0mm, and the bending radius required for the conventional FPC is 0.8mm. Therefore, a gap of more than 1.8mm is usually required from the display module to the inner side of the side wall of the surface iron frame to ensure that the FPC has enough space for bending. When this space is less than 1.8mm, the bending space of the FPC will be insufficient, and the arch force of the FPC bending will push up the side wall of the surface iron frame, causing the surface iron frame to become an outward-facing eight shape, which will cause interference problems when the client assembles the casing. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to prevent the surface iron frame without sufficient clearance from being lifted up by the FPC, thereby ensuring smooth assembly of the client and the casing.

[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 avoids the high surface iron frame of FPC, which includes a backlight module and a display module arranged above the backlight module, the display module includes a lower polarizer, a lower substrate, an upper substrate and an upper polarizer stacked in sequence from bottom to top, the lower substrate is longer than the upper substrate to form a step, the upper surface of the lower substrate located at the step is bound with IC and FPC, a surface iron frame is arranged above the upper polarizer, the surface iron frame includes a top plate and side walls extending downward from the edge of the top plate, the backlight module and the display module are arranged in a space enclosed by the top plate and the side walls, the side wall on the side close to the FPC is provided with a notch to avoid the FPC, and the top plate located above the FPC and the IC is provided with a bending pressure bone formed by bending.

[0006] As a preferred implementation of the liquid crystal display screen that avoids the high-surface iron frame of the FPC provided by the utility model, the size of each side of the notch is 0.5mm to 1mm larger than the size of each side of the FPC.

[0007] As a preferred implementation of the liquid crystal display screen that avoids the high-surface iron frame on top of the FPC provided by the utility model, the width of the bent pressure bone is 1 mm to 2 mm.

[0008] As a preferred implementation of the liquid crystal display screen that avoids the high-surface iron frame on the FPC provided by the utility model, the length of the bent compression bone is more than 4 mm greater than the length of the notch.

[0009] As a preferred implementation of the liquid crystal display screen that avoids the FPC from pushing up against the high-surface iron frame provided by the utility model, the distance between the lower surface of the bent pressure bone and the upper surfaces of the FPC and IC is greater than 0.2 mm.

[0010] As a preferred implementation of the liquid crystal display screen that avoids the FPC from hitting the high-surface iron frame provided by the utility model, a protective glue is provided on the upper surface of the lower substrate extending outward, and the protective glue covers the FPC and IC located on the upper surface of the lower substrate.

[0011] As a preferred implementation of the liquid crystal display screen that avoids the FPC-topped high-surface iron frame provided by the utility model, a protrusion is provided on the edge of the upper surface of the lower substrate extending outward.

[0012] As a preferred implementation of the liquid crystal display screen that avoids the high-surface iron frame of the FPC provided by the utility model, the upper surface of the protrusion is flush with the upper surface of the upper substrate.

[0013] As a preferred implementation of the liquid crystal display screen that avoids the high-surface iron frame on top of the FPC provided by the utility model, a buffer foam is arranged on the upper surface of the protective glue.

[0014] As a preferred implementation of the liquid crystal display screen that avoids the FPC-topped high-surface iron frame provided by the utility model, the buffer foam abuts against the upper surface of the top plate.

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

[0016] Since the side wall near the FPC has a gap to avoid the FPC, the bending space of the FPC is increased, and the problem of the side wall of the surface iron frame being lifted by the arch force when the FPC is bent is avoided, the size qualification rate of the LCD screen is improved, and interference is avoided when the client assembles the case, ensuring smooth assembly of the client and the case. At the same time, since the top plate above the FPC and IC is provided with a bending pressure bone formed by bending, it ensures that the surface iron frame has sufficient strength to avoid the strength reduction caused by the opening of the gap. 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 avoids the high-surface iron frame of the FPC.

[0019] Figure 2 for Figure 1 Schematic diagram of the structure behind the hidden casing.

[0020] Figure 3 for Figure 2 Schematic diagram of the structure of the middle surface iron frame.

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

[0022] Description of Figure Numbers:

[0023] Backlight module 100; display module 200; housing 300; lower substrate 1; upper substrate 2; IC3; FPC4; surface iron frame 5; top plate 51; side wall 52; notch 53; bending pressure bone 54;

[0024] Protective glue 6; protrusion 11; cushioning foam 7. 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 which avoids a high surface iron frame on top of an FPC, comprising a backlight module and a display module arranged above the backlight module, wherein the display module comprises a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are sequentially stacked and arranged from bottom to top, wherein the lower substrate is longer than the upper substrate and forms a step, an IC and an FPC are bound to the upper surface of the lower substrate located at the step, an surface iron frame is arranged above the upper polarizer, the surface iron frame comprises a top plate and side walls extending downward from the edge of the top plate, the backlight module and the display module are arranged in a space enclosed by the top plate and the side walls, the side wall on the side close to the FPC is provided with a notch for avoiding the FPC, and the top plate located above the FPC and the IC is provided with a bending pressure bone formed by bending.

[0029] Since the side wall near the FPC has a gap to avoid the FPC, the bending space of the FPC is increased, and the problem of the side wall of the surface iron frame being lifted by the arch force when the FPC is bent is avoided, the size qualification rate of the LCD screen is improved, and interference is avoided when the client assembles the case, ensuring smooth assembly of the client and the case. At the same time, since the top plate above the FPC and IC is provided with a bending pressure bone formed by bending, it ensures that the surface iron frame has sufficient strength to avoid the strength reduction caused by the opening of the gap.

[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 Figures 1 to 3 , a liquid crystal display screen that avoids the high surface iron frame on the top of FPC provided by the utility model, comprises a backlight module 100 and a display module 200, the display module 200 is arranged above the backlight module 100, the display module 200 comprises a lower polarizer, a lower substrate 1, an upper substrate 2 and an upper polarizer which are sequentially stacked from bottom to top, the lower substrate 1 is longer than the upper substrate 2 to form a step, the upper surface of the lower substrate 1 located at the step is bound with IC3 and FPC4, a surface iron frame 5 is arranged above the upper polarizer, the surface iron frame 5 comprises a top plate 51 and a side wall 52 extending downward from the edge of the top plate 51, the backlight module 100 and the display module 200 are arranged in a space enclosed by the top plate 51 and the side wall 52, the side wall 52 on the side close to the FPC4 is provided with a notch 53 for avoiding the FPC4, and the top plate 51 located above the FPC4 and IC3 is provided with a bending pressure bone 54 formed by bending. Since the side wall 52 on the side close to the FPC4 is provided with a notch 53 for avoiding the FPC4, the bending space of the FPC4 is increased, and the problem of the arch force of the FPC4 pushing up the side wall 52 of the surface iron frame 5 when bending is avoided, the size qualification rate of the liquid crystal display screen is improved, and interference is avoided when the client assembles the housing 300, ensuring smooth assembly of the client and the housing 300. At the same time, since the top plate 51 located above the FPC4 and IC3 is provided with a bending compression bone 54 formed by bending, it is ensured that the surface iron frame 5 has sufficient strength to avoid the strength reduction caused by the opening of the notch 53.

[0033] Furthermore, each side dimension of the notch 53 is 0.5 mm to 1 mm larger than each side dimension of the FPC 4 , so as to avoid interference between the notch 53 and the FPC 4 .

[0034] Furthermore, the width of the bending pressure bone 54 is 1 mm to 2 mm. The length of the bending pressure bone 54 is greater than the length of the notch 53 by more than 4 mm. In this embodiment, the single side length of the bending pressure bone 54 is greater than the single side length of the notch 53 by more than 2 mm, that is, the left side of the bending pressure bone 54 is 2 mm longer than the left side of the notch 53, and the right side of the bending pressure bone 54 is 2 mm longer than the right side of the notch 53. This ensures that the surface iron frame 5 has better strength.

[0035] Furthermore, the distance between the lower surface of the bending pressure bone 54 and the upper surfaces of FPC4 and IC3 is greater than 0.2 mm to avoid the hidden danger of interference between the bending pressure bone 54 and IC3 and FPC4.

[0036] Example 2

[0037] See also Figure 4 As a further optimization scheme of Example 1, in this embodiment, a protective glue 6 is provided on the upper surface of the lower substrate 1 extending outward, and the protective glue 6 covers the FPC4 and IC3 located on the upper surface of the lower substrate 1 to protect the FPC4 and IC3.

[0038] Furthermore, a protrusion 11 is provided on the edge of the upper surface of the lower substrate 1 extending outward, and the upper surface of the protrusion 11 is flush with the upper surface of the upper substrate 2 . The protrusion 11 can limit the flow of the protective glue 6 to prevent the protective glue 6 from overflowing.

[0039] Furthermore, the upper surface of the protective glue 6 is provided with a buffer foam 7, and the buffer foam 7 abuts against the upper surface of the top plate 51. This allows the surface iron frame 5 to be in close contact with the display module 200 to avoid shaking and bumping. More preferably, the buffer foam 7 is provided with an avoidance groove for avoiding the bending compression bone 54.

[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 liquid crystal display screen that avoids the high-surface iron frame of FPC, characterized in that: It includes a backlight module and a display module arranged above the backlight module, the display module includes a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are stacked in sequence from bottom to top, the lower substrate is longer than the upper substrate to form a step, the upper surface of the lower substrate located at the step is bound with an IC and an FPC, an iron frame is arranged above the upper polarizer, the iron frame includes a top plate and side walls extending downward from the edge of the top plate, the backlight module and the display module are arranged in a space enclosed by the top plate and the side walls, the side wall on the side close to the FPC is provided with a notch to avoid the FPC, and the top plate located above the FPC and the IC is provided with a bending pressure bone formed by bending.

2. The liquid crystal display screen for avoiding the high surface iron frame of FPC according to claim 1 is characterized in that: Each side dimension of the notch is 0.5 mm to 1 mm larger than each side dimension of the FPC.

3. The liquid crystal display screen for avoiding the high surface iron frame of FPC according to claim 1, characterized in that: The width of the bent bone compression portion is 1 mm to 2 mm.

4. The liquid crystal display screen for avoiding the high surface iron frame of FPC according to claim 1, characterized in that: The length of the bent compression bone is greater than the length of the notch by more than 4 mm.

5. The liquid crystal display screen for avoiding the high surface iron frame of FPC according to claim 1, characterized in that: The distance between the lower surface of the bending compression bone and the upper surfaces of the FPC and IC is greater than 0.2 mm.

6. The liquid crystal display screen for avoiding the high surface iron frame of FPC according to claim 1, characterized in that: The upper surface of the lower substrate extending outward is provided with a protective glue, and the protective glue covers the FPC and the IC located on the upper surface of the lower substrate.

7. The liquid crystal display screen for avoiding the high surface iron frame of FPC according to claim 6, characterized in that: The edge of the upper surface of the lower substrate extending outward is provided with a protrusion.

8. The liquid crystal display screen for avoiding the high surface iron frame of FPC according to claim 7, characterized in that: An upper surface of the protrusion is flush with an upper surface of the upper substrate.

9. The liquid crystal display screen for avoiding the high surface iron frame of FPC according to claim 6, characterized in that: The upper surface of the protective glue is provided with cushioning foam.

10. The liquid crystal display screen for avoiding the high surface iron frame of FPC according to claim 9, characterized in that: The buffer foam is in contact with the upper surface of the top plate.

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