Light and thin liquid crystal display screen

Abstract

The utility model discloses a light and thin liquid crystal display screen which comprises a backlight module, a lower polaroid, a lower substrate, an upper substrate and an upper polaroid which are sequentially arranged in an overlapped mode from bottom to top, a backlight FPC is arranged on the backlight module, the lower substrate is longer than the upper substrate and extends outwards to form a step, and the upper polaroid is arranged on the lower substrate. A step is arranged on the upper surface of the lower substrate, a driving IC and a display screen FPC are bound on the upper surface of the lower substrate located at the step, a bonding pad is arranged on one side of a leading-out end of the display screen FPC, the bonding pad is arranged on the step of the lower substrate located on one side of the driving IC, and the backlight FPC is bound on the bonding pad. According to the LCD module and the display screen FPC, a bonding pad does not need to be led out from the middle part of the display screen FPC, and the backlight FPC can be directly bent at the edge of the LCD module and bound on the bonding pad, so that the backlight FPC and the display screen FPC are prevented from being arranged in parallel, the occupied space is reduced, the light and thin design of the terminal is facilitated, 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 light and thin liquid crystal display screen. Background Art

[0002] Traditional LCD screens are equipped with backlight modules. The backlight PFC of the backlight module usually needs to be welded to the display screen FPC. The traditional solution is to protrude a part in the middle of the display screen FPC for welding the backlight FPC. In addition, the space occupied by the backlight FPC and the display screen FPC arranged in parallel is relatively wide. In actual use, a large space is required to avoid the two FPCs, which is not conducive to the lightweight design of the terminal and reduces the competitiveness of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is to avoid the parallel arrangement of the optical FPC and the display screen FPC, reduce the space occupied, and make the liquid crystal display screen lighter and thinner.

[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 thin and light liquid crystal display screen, which includes a backlight module, a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are stacked in sequence from bottom to top, a backlight FPC is arranged on the backlight module, the lower substrate is longer than the upper substrate and extends outward to form a step, a driver IC and a display screen FPC are bound to the upper surface of the lower substrate located at the step, a soldering pad is arranged on one side of the lead-out end of the display screen FPC, the soldering pad is arranged on the step of the lower substrate located on one side of the driver IC, and the backlight FPC is bound to the soldering pad.

[0006] As a preferred implementation of the thin and light liquid crystal display screen provided by the utility model, the lead-out end of the backlight FPC is perpendicular to the lead-out end of the display screen FPC.

[0007] As a preferred implementation of the thin and light liquid crystal display screen provided by the utility model, the backlight FPC, the display screen FPC and the driver IC are covered with black silica gel.

[0008] As a preferred embodiment of the thin and light LCD display provided by the utility model, the display FPC includes a main body and a connecting part connected to the main body, an interface end is provided at one end of the connecting part away from the main body, and two reinforcing plates staggered on both sides of the connecting part are provided.

[0009] As a preferred implementation of the thin and light liquid crystal display screen provided by the utility model, the widths of the two reinforcing plates are different.

[0010] As a preferred implementation of the thin and light liquid crystal display screen provided by the utility model, the material of the reinforcement plate is FR4, PI or stainless steel.

[0011] As a preferred implementation of the thin and light 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.

[0012] As a preferred embodiment of the thin and light liquid crystal display provided by the utility model, a cover plate is arranged on the upper polarizer, a plurality of grooves are formed on the upper surface of the cover plate by etching, a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.

[0013] As a preferred implementation of the thin and light liquid crystal display screen provided by the utility model, the groove is a closing groove which is narrow outside and wide inside.

[0014] As a preferred implementation of the thin and light liquid crystal display screen provided by the utility model, the cross-sectional shape of the groove is an isosceles trapezoid.

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

[0016] Since a pad is provided on one side of the lead-out end of the display FPC, and the pad is provided on the step of the lower substrate located on the side of the driver IC, the backlight FPC is bound to the pad, so that it is not necessary to lead out the pad in the middle part of the display FPC, and the backlight FPC can be directly bent at the edge of the LCD module and bound to the pad, avoiding the backlight FPC and the display FPC being arranged in parallel, reducing space occupancy, being conducive to the lightweight design of the terminal, 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 present invention provides a schematic structural diagram of a thin and light liquid crystal display screen.

[0019] Figure 2 for Figure 1 Top view after hiding the upper polarizer.

[0020] Figure 3 for Figure 2 Schematic diagram of the structure after hiding the backlight module and backlight FPC.

[0021] Figure 4 It is a structural diagram of the display FPC.

[0022] Figure 5 This is a schematic diagram of the structure of Example 3.

[0023] Figure 6 for Figure 5 Schematic diagram of the improved structure of the middle cover.

[0024] Figure 7 for Figure 6 Schematic diagram of the decomposition structure.

[0025] Figure 8 for Figure 6 Schematic diagram of the improved structure.

[0026] Description of Figure Numbers:

[0027] Backlight module 1; lower polarizer 2; lower substrate 3; upper substrate 4; upper polarizer 5; backlight FPC 6; driver IC 7; display screen FPC 8; black silicone 9;

[0028] Main body 81; connecting portion 82; interface end 83; reinforcing plate 84;

[0029] Cover plate 10; plastic layer 11; groove 12. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] The utility model provides a thin and light liquid crystal display screen, which comprises a backlight module, a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are sequentially stacked from bottom to top, a backlight FPC is arranged on the backlight module, the lower substrate is longer than the upper substrate and extends outward to form a step, a driving IC and a display screen FPC are bound to the upper surface of the lower substrate located at the step, a soldering pad is arranged on one side of the lead-out end of the display screen FPC, the soldering pad is arranged on the step of the lower substrate located on one side of the driving IC, and the backlight FPC is bound to the soldering pad.

[0034] Since a pad is provided on one side of the lead-out end of the display FPC, and the pad is provided on the step of the lower substrate located on the side of the driver IC, the backlight FPC is bound to the pad, so that it is not necessary to lead out the pad in the middle part of the display FPC, and the backlight FPC can be directly bent at the edge of the LCD module and bound to the pad, avoiding the backlight FPC and the display FPC being arranged in parallel, reducing space occupancy, being conducive to the lightweight design of the terminal, and improving the competitiveness of the product.

[0035] 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.

[0036] Example 1

[0037] See also Figures 1 to 3, which is a thin and light liquid crystal display screen provided by the utility model, comprising a backlight module 1, a lower polarizer 2, a lower substrate 3, an upper substrate 4 and an upper polarizer 5 which are stacked in sequence from bottom to top, a backlight FPC 6 is arranged on the backlight module 1, the lower substrate 3 is longer than the upper substrate 4 and extends outward to form a step, a driving IC 7 and a display screen FPC 8 are bound to the upper surface of the lower substrate 3 located at the step, a pad is arranged on one side of the lead-out end of the display screen FPC 8, the pad is arranged on the step of the lower substrate 3 located on one side of the driving IC 7, and the backlight FPC 6 is bound to the pad. Since a pad is provided on one side of the lead-out end of the display screen FPC8, and the pad is provided on the step of the lower substrate 3 located on the side of the driver IC7, the backlight FPC6 is bound to the pad, so that there is no need to lead out the pad in the middle part of the display screen FPC8, and the backlight FPC6 can be directly bent at the edge of the LCD module and bound to the pad, avoiding the backlight FPC6 and the display screen FPC8 being arranged in parallel, reducing space occupancy, being conducive to the lightweight design of the terminal, and improving the competitiveness of the product.

[0038] Furthermore, the lead-out end of the backlight FPC6 is perpendicular to the lead-out end of the display screen FPC8, that is, the backlight FPC6 is bent on the left side of the driver IC7 and bound to the pad, avoiding the backlight FPC6 and the display screen FPC8 being arranged in parallel, thereby reducing space occupancy.

[0039] Furthermore, the backlight FPC6, the display screen FPC8 and the driver IC7 are covered with black silicone 9, which can effectively prevent the backlight FPC6 and the display screen FPC8 from rebounding, and can also cover and hide the backlight FPC6 and the display screen FPC8.

[0040] Example 2

[0041] See also Figure 4 As a further optimization scheme of Example 1, in this embodiment, the display screen FPC8 includes a main body 81 and a connecting portion 82 connected to the main body 81, an interface end 83 is provided at one end of the connecting portion 82 away from the main body 81, and two reinforcing plates 84 staggered from each other are provided on both sides of the connecting portion 82.

[0042] In the design of traditional display screen FPC8, usually no reinforcing plate 84 is provided or the reinforcing plate 84 is provided at the same position and the width of the reinforcing plate 84 is the same, resulting in the pressure applied being concentrated on the same straight line when plugging and unplugging the display screen FPC8, causing a slight break in the line of the display screen FPC8. The display screen FPC8 provided by the utility model has two reinforcing plates 84 located on both sides of the connecting portion 82 and staggered with each other. When the display screen FPC8 is pulled out, the pressure applied by the reinforcing plates 84 on both sides to the display screen FPC8 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 83, thereby improving the product yield.

[0043] Furthermore, the two reinforcing plates 84 staggered in the present invention may be respectively arranged at two different positions; or the center point may be at the same position, but the widths of the two reinforcing plates 84 are different, as long as the stress of the two reinforcing plates 84 when bent is not concentrated on the same straight line, it can avoid stress concentration and the problem of easy micro-breakage of the line at the interface end 83, thereby improving the product yield. In this embodiment, the reinforcing plates 84 include a first reinforcing plate and a second reinforcing plate, each reinforcing plate 84 has a different width, and its center point is on the same horizontal line, so that the edges of the reinforcing plates 84 are staggered and not concentrated on the same straight line.

[0044] Furthermore, the material of the reinforcing plate 84 is FR4, PI or stainless steel. In other embodiments, if the display screen FPC8 generates a large amount of heat, a heat dissipation material with a better heat dissipation effect, such as an aluminum foil reinforcing plate 84, may also be used.

[0045] Furthermore, the outer surfaces of the first reinforcement plate and the second reinforcement plate are both provided with a surface treatment layer for increasing the surface roughness, so as to increase the friction between the staff and the first reinforcement plate and the second reinforcement plate, so that the display screen FPC8 is easy to pull out.

[0046] 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 display screen FPC8 can be pulled out more easily, reducing the risk of the display screen FPC8 circuit being broken.

[0047] Example 3

[0048] See also Figures 5 to 8As a further optimization scheme of Example 1, in this embodiment, a cover plate 10 is provided on the upper polarizer 5, and the upper surface of the cover plate 10 is covered with a plastic layer 11. The upper surface of the cover plate 10 is etched to form a plurality of grooves 12 downwardly, and a portion of the lower surface of the plastic layer 11 is embedded in each groove 12. Since the surface of the groove 12 formed by etching has a certain degree of roughness, the plastic layer 11 can be tightly bonded to the groove 12 to prevent the cover plate 10 and the plastic layer 11 from falling off. Since the upper part of the cover plate 10 is covered with a plastic layer 11, and the upper surface of the cover plate 10 is etched to form a plurality of grooves 12, and the plastic layer 11 can be embedded in the interior of the plurality of grooves 12, the grooves 12 formed by etching make the inner surface of the grooves 12 have a certain degree of roughness, and the surface of the grooves 12 with a certain degree of roughness can enhance the bonding force between the grooves 12 and the plastic layer 11, thereby reducing the possibility of separation of the grooves 12 and the plastic layer 11. When the LCD screen is hit or falls, the plastic layer 11 on the upper surface of the cover plate 10 can directly withstand the external force, thereby preventing the external force from directly acting on the cover plate 10. Since the plastic layer 11 can absorb most of the energy, the remaining external force is very weak when it acts on the cover plate 10, thereby effectively reducing the risk of the cover plate 10 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 11 on the upper surface of the cover plate 10, and will not directly damage the cover plate 10, thereby preventing the cover plate 10 from being damaged and causing the LCD screen to be unable to be used normally, thereby bringing a better user experience to users and improving the anti-fall ability of the LCD screen.

[0049] Furthermore, the shape of the groove 12 can be square or circular, and the cross-sectional shape of the groove 12 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 12 is an isosceles trapezoid, and the groove 12 is in the shape of an elongated strip. The isosceles trapezoid-shaped groove 12 can allow the plastic layer 11 to be tightly embedded in the groove 12, thereby preventing the groove 12 from separating from the plastic layer 11, thereby preventing the cover plate 10 from falling off from the plastic layer 11. The elongated groove 12 can increase the fitting portion between the plastic layer 11 and the groove 12, thereby increasing the fitting strength between the groove 12 and the plastic layer 11.

[0050] 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.

[0051] 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 thin and light liquid crystal display screen, characterized in that: It comprises a backlight module, a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are sequentially stacked from bottom to top; a backlight FPC is arranged on the backlight module; the lower substrate is longer than the upper substrate and extends outward to form a step; a driver IC and a display screen FPC are bound to the upper surface of the lower substrate located at the step; a soldering pad is arranged on one side of the lead-out end of the display screen FPC; the soldering pad is arranged on the step of the lower substrate located on one side of the driver IC; and the backlight FPC is bound to the soldering pad.

2. The thin and light liquid crystal display screen according to claim 1, characterized in that: The lead-out end of the backlight FPC is perpendicular to the lead-out end of the display screen FPC.

3. The thin and light liquid crystal display screen according to claim 1, characterized in that: The backlight FPC, display screen FPC and driver IC are covered with black silica gel.

4. The thin and light liquid crystal display screen according to claim 1, characterized in that: The display screen FPC comprises a body and a connecting portion connected to the body, an end of the connecting portion away from the body is provided with an interface end, and two reinforcing plates staggered with each other are provided on both sides of the connecting portion.

5. The thin and light liquid crystal display screen according to claim 4, characterized in that: The widths of the two reinforcing plates are different.

6. The thin and light liquid crystal display screen according to claim 4, characterized in that: The reinforcement plate is made of FR4, PI or stainless steel.

7. The thin and light liquid crystal display screen according to claim 4, characterized in that: The outer surfaces of the two reinforcing plates are both provided with a surface treatment layer for improving the surface roughness.

8. The thin and light liquid crystal display screen according to claim 1, characterized in that: A cover plate is arranged on the upper polarizer, a plurality of grooves are formed on the upper surface of the cover plate by etching, a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.

9. The thin and light liquid crystal display screen according to claim 8, characterized in that: The groove is a closing groove which is narrow outside and wide inside.

10. The thin and light liquid crystal display screen according to claim 9, characterized in that: The cross-sectional shape of the groove is an isosceles trapezoid.

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