Liquid crystal display screen capable of reducing dispensing times

Abstract

The utility model discloses a liquid crystal display capable of reducing dispensing times, which comprises a backlight module and a display module, and the backlight module comprises a lower iron frame, a reflector plate, a light guide plate and an optical film group which are sequentially overlapped from bottom to top, the display module comprises a lower polaroid, a lower substrate, an upper substrate, an upper polaroid and a cover plate which are sequentially arranged above the optical film set in a stacked mode from bottom to top, a camera blind hole is formed in the lower iron frame, and the camera blind hole penetrates through the lower iron frame, the reflector plate, the light guide plate, the optical film set and the lower polaroid. The lower iron frame located at the camera blind hole is bent upwards to form a folded edge, shading glue is arranged between the upper surface of the folded edge and the lower polaroid, and the outer side edge of the lower polaroid protrudes out of the outer side edge of the folded edge or is flush with the outer side edge of the folded edge. And glue is arranged on the outer side of the lower polaroid, the lower surface of the lower substrate and the outer side of the folded edge.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more particularly to a liquid crystal display screen capable of reducing the number of glue dispensing times. Background Art

[0002] Normally, a blind hole is required for the front camera of a full-screen display, such as Figure 1 As shown, in order to prevent light from leaking out from between the light-shielding glue 1' and the lower iron frame 2', and to prevent light from leaking out from the edge of the opening of the lower polarizer 3', a common solution is to apply glue to the edge of the lower polarizer 3' and to the folded edge 4' of the backlight opening. The first glue 5' is applied to the edge of the lower polarizer 3' to prevent light leakage from the edge of the lower polarizer 3'. The second glue 6' is applied to the folded edge 4' of the backlight opening and overlaps with the glue next to the opening of the lower polarizer 3' to prevent light leakage from the opening of the backlight lower iron frame 2'. Because this structure requires two glue applications, the process is complicated, which increases the production process and cost, and affects production efficiency and yield. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to reduce the number of dispensing times, simplify the manufacturing process, reduce the production process and cost, and improve the production efficiency and yield rate.

[0004] The technical problem to be solved by the present invention 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 reduced glue dispensing times, which includes a backlight module and a display module, the backlight module includes a lower iron frame, a reflective sheet, a light guide plate and an optical film group stacked in sequence from bottom to top, the display module includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate stacked in sequence from bottom to top above the optical film group, a camera blind hole is opened at the lower iron frame, the camera blind hole penetrates the lower iron frame, the reflective sheet, the light guide plate, the optical film group and the lower polarizer, the lower iron frame located at the camera blind hole is bent upward to form a folded edge, a light-shielding glue is arranged between the upper surface of the folded edge and the lower polarizer, the outer edge of the lower polarizer protrudes from the outer edge of the folded edge or the outer edge of the lower polarizer is flush with the outer edge of the folded edge, and glue is provided on the outer side of the lower polarizer, the lower surface of the lower substrate and the outer side of the folded edge.

[0006] As a preferred embodiment of the liquid crystal display screen with reduced glue dispensing times provided by the present invention, the glue is hot melt adhesive.

[0007] As a preferred embodiment of the liquid crystal display screen with reduced glue dispensing times provided by the present invention, the color of the glue is black.

[0008] As a preferred embodiment of the liquid crystal display screen with reduced glue dispensing times provided by the present invention, the outer edge of the lower polarizer protrudes from the outer edge of the folded edge by less than 0.1 mm.

[0009] As a preferred embodiment of the liquid crystal display screen with reduced dispensing times provided by the present invention, an annular BM edge is provided between the lower substrate and the upper substrate, and the inner diameter of the BM edge is smaller than the inner diameter of the lower polarizer opening.

[0010] As a preferred embodiment of the liquid crystal display screen with reduced glue dispensing times provided by the present invention, a frame-shaped glue overflow groove is etched on the lower surface of the cover plate located in the non-visible area, and a light-shielding ink is provided on the edge of the lower surface of the cover plate located in the non-visible area. The light-shielding ink is coated on the outer surface of the glue overflow groove and the lower surface of the cover plate.

[0011] As a preferred embodiment of the liquid crystal display screen with reduced glue dispensing times provided by the present invention, the cross-sectional shape of the glue overflow groove is V-shaped or semicircular.

[0012] As a preferred embodiment of the liquid crystal display screen with reduced glue dispensing times provided by the present invention, the thickness of the cover plate is 0.8 mm.

[0013] As a preferred implementation of the liquid crystal display screen with reduced glue dispensing times provided by the present invention, the depth of the glue overflow groove is 0.05 mm.

[0014] As a preferred embodiment of the liquid crystal display screen with reduced glue dispensing times provided by the present invention, OCA optical glue is provided on the lower surface of the cover plate, and the OCA optical glue is provided in the area formed by the glue overflow groove, and the thickness of the OCA optical glue is 0.1 mm.

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

[0016] Since the outer edge of the lower polarizer protrudes from the outer edge of the folded edge or the outer edge of the lower polarizer is flush with the outer edge of the folded edge, the glue at the lower polarizer and the folded edge can be dispensed at one time, so that the glue covers the edge of the lower polarizer opening and the side of the folded edge, thereby preventing light leakage at the edge of the lower polarizer opening and the opening of the backlight lower iron frame. This solution reduces the number of glue dispenses, simplifies the process, reduces production processes and costs, and improves production efficiency and yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the solutions in this application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 Schematic diagram of the structure of a liquid crystal display screen in traditional technology.

[0019] Figure 2 This is a schematic structural diagram of a liquid crystal display screen that reduces the number of glue dispensing times provided by the utility model.

[0020] Figure 3 for Figure 2 Schematic diagram of the improved structure at the middle cover.

[0021] Description of Figure Numbers:

[0022] Lower iron frame 1; reflector 2; light guide plate 3; optical film assembly 4; lower polarizer 5; lower substrate 6; upper substrate 7; upper polarizer 8; cover plate 9; folding edge 10; light-shielding adhesive 11; glue 12; BM edge 13; glue overflow groove 14; OCA optical adhesive 15. DETAILED DESCRIPTION

[0023] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0024] 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 to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0025] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0026] The utility model provides a liquid crystal display screen with reduced glue dispensing times, which comprises a backlight module and a display module, wherein the backlight module comprises a lower iron frame, a reflective sheet, a light guide plate and an optical film group which are sequentially stacked from bottom to top, and the display module comprises a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are sequentially stacked from bottom to top above the optical film group, a camera blind hole is provided at the lower iron frame, the camera blind hole penetrates the lower iron frame, the reflective sheet, the light guide plate, the optical film group and the lower polarizer, the lower iron frame located at the camera blind hole is bent upward to form a folded edge, light-shielding glue is provided between the upper surface of the folded edge and the lower polarizer, the outer edge of the lower polarizer protrudes from the outer edge of the folded edge or the outer edge of the lower polarizer is flush with the outer edge of the folded edge, and glue is provided on the outer side of the lower polarizer, the lower surface of the lower substrate and the outer side of the folded edge.

[0027] Since the outer edge of the lower polarizer protrudes from the outer edge of the folded edge or the outer edge of the lower polarizer is flush with the outer edge of the folded edge, the glue at the lower polarizer and the folded edge can be dispensed at one time, so that the glue covers the edge of the lower polarizer opening and the side of the folded edge, thereby preventing light leakage at the edge of the lower polarizer opening and the opening of the backlight lower iron frame. This solution reduces the number of glue dispenses, simplifies the process, reduces production processes and costs, and improves production efficiency and yield.

[0028] 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 will be described in detail below in conjunction with the accompanying drawings and embodiments. 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 understood as limiting the present invention.

[0029] See also Figure 2, a liquid crystal display screen with reduced glue dispensing times provided by the utility model, which includes a backlight module and a display module. The backlight module includes a lower iron frame 1, a reflective sheet 2, a light guide plate 3 and an optical film group 4 stacked in sequence from bottom to top. The display module includes a lower polarizer 5, a lower substrate 6, an upper substrate 7, an upper polarizer 8 and a cover plate 9 stacked in sequence from bottom to top on the optical film group 4. A camera blind hole is opened at the lower iron frame 1, and the camera blind hole penetrates the lower iron frame 1. Frame 1, reflector 2, light guide plate 3, optical film group 4 and lower polarizer 5. The lower iron frame 1 located at the blind hole of the camera is bent upward to form a folded edge 10. A light-shielding glue 11 is arranged between the upper surface of the folded edge 10 and the lower polarizer 5. The outer edge of the lower polarizer 5 protrudes from the outer edge of the folded edge 10 or the outer edge of the lower polarizer 5 is flush with the outer edge of the folded edge 10. Glue 12 is arranged on the outer side of the lower polarizer 5, the lower surface of the lower substrate 6 and the outer side of the folded edge 10. Since the outer edge of the lower polarizer 5 protrudes from the outer edge of the folded edge 10 or the outer edge of the lower polarizer 5 is flush with the outer edge of the folded edge 10, the glue 12 at the lower polarizer 5 and the folded edge 10 can be dispensed at one time, so that the glue 12 covers the edge of the opening of the lower polarizer 5 and the side of the folded edge 10, thereby avoiding light leakage at the edge of the opening of the lower polarizer 5 and the opening of the backlight lower iron frame 1. This solution reduces the number of glue dispenses, simplifies the process, reduces production processes and costs, and improves production efficiency and yield.

[0030] Furthermore, the glue 12 is hot melt glue, and the color of the glue 12 is black to block light and avoid light leakage.

[0031] Furthermore, the opening of the lower polarizer 5 is reduced in size, with the outer edge of the lower polarizer 5 protruding less than 0.1 mm from the outer edge of the folded edge 10. An annular BM edge 13 is provided between the lower substrate 6 and the upper substrate 7, and the inner diameter of the BM edge 13 is reduced to be smaller than the inner diameter of the opening of the lower polarizer 5. The reduced size covers the opening of the lower polarizer 5, preventing it from being seen from the front. The reduced BM does not affect the camera optical path.

[0032] See also Figure 3As a further optimization of Example 1, in this embodiment, a frame-shaped overflow glue groove 14 is etched on the lower surface of the cover plate 9 located in the non-visible area, and a light-shielding ink is provided on the edge of the lower surface of the cover plate 9 located in the non-visible area. The light-shielding ink is coated on the outer surface of the overflow glue groove 14 and the lower surface of the cover plate 9. Since the overflow glue groove 14 is provided on the lower surface of the cover plate 9, when the OCA optical adhesive 15 is applied, the OCA optical adhesive 15 will overflow outward under pressure, and the excess glue 12 will flow into and be stored in the overflow glue groove 14, preventing it from continuing to diffuse outward, thereby limiting the scope of the overflow glue, which can effectively prevent the OCA optical adhesive 15 from overflowing and causing light leakage; the edge of the lower surface of the cover plate 9 is provided with light-shielding ink, and the light-shielding ink is coated on the outer surface of the overflow glue groove 14 and the lower surface of the cover plate 9. The overflow glue groove 14 is located in the light-shielding ink area at the edge of the cover plate 9, and therefore does not affect the appearance of the product.

[0033] Furthermore, OCA optical adhesive 15 is applied to the lower surface of cover plate 9. OCA optical adhesive 15 is disposed within the area formed by overflow groove 14. The shape of overflow groove 14 can be designed to facilitate etching, and the cross-section is not limited to semicircular or V-shaped. Currently, the industry's commonly used cover plate 9 thickness is approximately 0.8mm, and the thickness of OCA optical adhesive 15 is approximately 0.1mm. The etching depth of overflow groove 14 can be designed to be 0.05mm and adjusted based on the actual amount of overflow glue.

[0034] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0035] Obviously, the embodiments described above are only some of the embodiments of the present application, rather than all of the 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 has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present application specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present application.

Claims

1. A liquid crystal display screen with reduced glue dispensing times, characterized in that: It includes a backlight module and a display module, the backlight module includes a lower iron frame, a reflective sheet, a light guide plate and an optical film group stacked in sequence from bottom to top, the display module includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate stacked in sequence from bottom to top above the optical film group, a camera blind hole is opened at the lower iron frame, the camera blind hole penetrates the lower iron frame, the reflective sheet, the light guide plate, the optical film group and the lower polarizer, the lower iron frame located at the camera blind hole is bent upward to form a folded edge, a light-shielding glue is arranged between the upper surface of the folded edge and the lower polarizer, the outer edge of the lower polarizer protrudes from the outer edge of the folded edge or the outer edge of the lower polarizer is flush with the outer edge of the folded edge, and glue is provided on the outer side of the lower polarizer, the lower surface of the lower substrate and the outer side of the folded edge.

2. The liquid crystal display screen with reduced dispensing times according to claim 1, characterized in that: The glue is hot melt adhesive.

3. The liquid crystal display screen with reduced dispensing times according to claim 1, characterized in that: The color of the glue is black.

4. The liquid crystal display screen with reduced dispensing times according to claim 1, characterized in that: The outer edge of the lower polarizer protrudes from the outer edge of the folded edge by less than 0.1 mm.

5. The liquid crystal display screen with reduced dispensing times according to claim 1, characterized in that: An annular BM edge is provided between the lower substrate and the upper substrate, and the inner diameter of the BM edge is smaller than the inner diameter of the opening of the lower polarizer.

6. The liquid crystal display screen with reduced dispensing times according to claim 1, characterized in that: A frame-shaped glue overflow groove is etched on the lower surface of the cover plate located in the non-visible area, and light-shielding ink is provided on the edge of the lower surface of the cover plate located in the non-visible area. The light-shielding ink is coated on the outer surface of the glue overflow groove and the lower surface of the cover plate.

7. The liquid crystal display screen with reduced dispensing times according to claim 6, characterized in that: The cross-section of the glue overflow groove is V-shaped or semicircular.

8. The liquid crystal display screen with reduced dispensing times according to claim 6, characterized in that: The thickness of the cover plate is 0.8 mm.

9. The liquid crystal display screen with reduced dispensing times according to claim 6, characterized in that: The depth of the glue overflow groove is 0.05 mm.

10. The liquid crystal display screen with reduced dispensing times according to claim 6, characterized in that: The lower surface of the cover plate is provided with OCA optical glue, and the OCA optical glue is provided in the area formed by the glue overflow groove, and the thickness of the OCA optical glue is 0.1 mm.

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