Display screen structure for improving backlight edge bright line

Abstract

The utility model discloses a display screen structure capable of improving backlight edge bright lines, which comprises a light guide plate, a diffusion film is arranged on the upper surface of the light guide plate, a lower brightness enhancement film is arranged on the upper surface of the diffusion film, an upper brightness enhancement film is arranged on the upper surface of the lower brightness enhancement film, a reflecting film is arranged on the lower surface of the light guide plate, and the upper brightness enhancement film is arranged on the lower surface of the light guide plate. An iron frame is arranged on the lower surface of the reflecting film, a rubber frame is arranged on the edge of the iron frame, shading glue is arranged on the top of the rubber frame, and the edge of the diffusion film exceeds the lower brightness enhancement film. The light guide plate projects light upwards, and the edge of the diffusion film exceeds the lower brightness enhancement film, so that the light projected to the rubber frame is shielded by the protruding edge of the diffusion film, the light projected to the rubber frame by the light guide plate is greatly reduced, the reflected light on the rubber frame is reduced, and the edge of the display screen is effectively prevented from emitting light. Therefore, the display effect of the display screen is improved.

Description

Technical Field

[0001] The utility model relates to a display screen structure, more specifically, to a display screen structure for improving the bright line of the backlight edge. Background Art

[0002] Consumers have increasingly higher requirements for the display effects of mobile phone displays. As the light source component of mobile phone displays, the light output effect of the backlight directly affects the display effect of the display.

[0003] like Figure 4 As shown in the figure, the basic structure of the backlight of the existing mobile phone display screen is that the main body is composed of a "cavity" composed of an iron frame and a plastic frame to carry various optical film materials. In order to prevent the film materials from being squeezed and wrinkled by the plastic frame after high-temperature expansion during the reliability environmental test, causing uneven display effects, a certain gap is usually left between each film material and the plastic iron frame to provide expansion space for each film material.

[0004] However, in the actual production process, due to poor tolerance control during film assembly, some light will be reflected back after passing through the light guide plate 100 and hitting the glue frame 800. These light rays LO do not pass through the diffusion film 200, but directly pass through the gap between the film material and the glue frame 800, and enter the prism structure of the brightness enhancement film 400, and are emitted along the direction of the prism of the brightness enhancement film 400. The human eye E can see the emitted light at a certain angle, forming an edge bright line. For slight emitted light, a small angle is required to see it. For severe emitted light, it can be seen by looking straight ahead. This edge bright line seriously affects the color rendering effect of the display screen.

[0005] Chinese utility model patent document CN107153234B discloses a backlight source structure for improving the bright line of the edge of a backlight source, comprising: a glue frame, a reflective sheet bonded to the back of the glue frame by a reflective sheet adhesive, and a light guide plate, a diffuser, a lower light shielding sheet, an upper light enhancing sheet and a light shielding glue sequentially arranged on the front of the glue frame from bottom to top; and also comprising an FPC component bonded to the glue frame and aligned with the light intake area of ​​the light guide plate for emitting light; wherein the front side of the light guide plate is the light intake area, and the left side, the right side and the rear side of the light guide plate are reversely cut to form an inclination angle; the inner side end of the reflective sheet adhesive is located in the air avoidance area formed by the left side, the right side and the rear side of the light guide plate and the reflective sheet; the reflective sheet adhesive is black adhesive, and the inner side end of the black adhesive is located in the air avoidance area for absorbing the light emitted from the edge of the light guide plate after cutting; the length of the reflective sheet adhesive in the air avoidance area is linearly related to the inclination angle formed after the left side, the right side or the bottom of the light guide plate is reversely cut. The FPC assembly specifically includes an FPC board fixed to a rubber frame by an FPC double-sided adhesive tape, and a plurality of LED lamps arranged on the FPC board. The left side of the light guide plate is formed at an inclination angle of 20-70° after being reverse cut. The left side of the light guide plate is formed at an inclination angle of 45° after being reverse cut. The right side of the light guide plate is formed at an inclination angle of 20-70° after being reverse cut. The right side of the light guide plate is formed at an inclination angle of 45° after being reverse cut. The rear side of the light guide plate is formed at an inclination angle of 20-70° after being reverse cut. The rear side of the light guide plate is formed at an inclination angle of 45° after being reverse cut.

[0006] Obviously, the front side of the light guide plate in the patent is the light intake area, and the left side, right side and back side of the light guide plate are cut in the opposite direction to form an inclination; the inner side end of the adhesive backing of the reflective sheet is located in the air-avoiding area formed by the left side, right side and back side of the light guide plate and the reflective sheet, which solves the problem of side bright lines and light leakage in the module of the narrow frame or frameless backlight source in the prior art. However, this structure is too complicated and the manufacturing cost is too high. Utility Model Content

[0007] Based on this, it is necessary to provide a display screen structure for improving the bright line of the backlight edge in view of the above technical problems. The display screen structure for improving the bright line of the backlight edge includes a light guide plate, a diffusion film is provided on the upper surface of the light guide plate, a lower light enhancement film is provided on the upper surface of the diffusion film, an upper light enhancement film is provided on the upper surface of the lower light enhancement film, a reflective film is provided on the lower surface of the light guide plate, an iron frame is provided on the lower surface of the reflective film, a glue frame is provided on the edge of the iron frame, a light-shielding glue is provided on the top of the glue frame, and the edge of the diffusion film exceeds the lower light enhancement film. The light guide plate projects light upwards. Since the edge of the diffusion film exceeds the lower light enhancement film, the light projected in the direction of the glue frame is blocked by the protruding edge of the diffusion film, thereby greatly reducing the light projected by the light guide plate in the direction of the glue frame, reducing the reflected light on the glue frame, and effectively avoiding the appearance of light at the edge of the display screen, thereby improving the display effect of the display screen.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] A display screen structure for improving backlight edge bright lines, characterized in that the display screen structure for improving backlight edge bright lines comprises a light guide plate, a diffusion film is provided on the upper surface of the light guide plate, a lower light-enhancing film is provided on the upper surface of the diffusion film, an upper light-enhancing film is provided on the upper surface of the lower light-enhancing film, a reflective film is provided on the lower surface of the light guide plate, an iron frame is provided on the lower surface of the reflective film, a glue frame is provided on the edge of the iron frame, a light-shielding glue is provided on the top of the glue frame, and the edge of the diffusion film exceeds the lower light-enhancing film.

[0010] As a preferred implementation of the display screen structure for improving the bright line of the backlight edge provided by the utility model, the edge of the diffusion film exceeds the light guide plate.

[0011] As a preferred implementation of the display screen structure for improving the bright line of the backlight edge provided by the utility model, the edges of the lower brightness enhancement film and the upper brightness enhancement film are aligned.

[0012] As a preferred implementation of the display screen structure for improving the bright line at the backlight edge provided by the utility model, the edges of the light guide plate and the reflective film are aligned.

[0013] As a preferred implementation of the display screen structure for improving the bright line at the backlight edge provided by the utility model, an ink layer is provided at the edge of the lower surface of the diffusion film, and the ink layer faces the light guide plate.

[0014] As a preferred implementation of the display screen structure for improving the bright line at the edge of backlight provided by the utility model, the ink layer is in the form of a sheet.

[0015] As a preferred implementation of the display screen structure for improving the bright line at the backlight edge provided by the utility model, the ink layer is black.

[0016] As a preferred implementation of the display screen structure for improving the backlight edge bright line provided by the utility model, an ink absorption block is provided at the edge of the lower surface of the diffusion film, and the ink absorption block faces the light guide plate.

[0017] As a preferred implementation of the display screen structure for improving the bright line of the backlight edge provided by the utility model, the ink absorption block is triangular, and the glue frame is provided with a groove notch.

[0018] As a preferred implementation of the display screen structure for improving the bright line of the backlight edge provided by the utility model, the ink absorption block is black.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model provides a display screen structure with improved backlight edge bright lines. The light guide plate projects light upwards. Since the edge of the diffusion film exceeds the lower light-enhancing film, the light projected in the direction of the glue frame is blocked by the protruding edge of the diffusion film, thereby greatly reducing the light projected by the light guide plate in the direction of the glue frame, reducing the reflected light on the glue frame, effectively avoiding the occurrence of glare at the edge of the display screen, avoiding edge bright lines, and thus improving the display effect of the display screen.

[0021] In addition, an ink layer can be provided on the edge of the lower surface of the diffusion film, and the ink layer faces the light guide plate. The ink layer is in a sheet shape. The ink layer is black. The light guide plate projects light upward, and the light projected toward the glue frame is absorbed by the black ink layer, further reducing the light projected by the light guide plate toward the glue frame, and further reducing the reflected light on the glue frame, thereby further improving the display effect of the display screen.

[0022] In addition, the edge of the lower surface of the diffusion film can be provided with an ink absorption block, which faces the light guide plate. The ink absorption block is triangular. The ink absorption block is black. The light guide plate projects light upward, and the light projected toward the glue frame is absorbed by the triangular ink absorption block. At the same time, the triangular ink absorption block also blocks the light, further reducing the light projected by the light guide plate toward the glue frame, and further reducing the reflected light on the glue frame, thereby further improving the display effect of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the scheme in the utility model, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of a display screen for improving the bright line of the backlight edge of the utility model;

[0025] Figure 2 It is a structural schematic diagram of another embodiment of the display screen structure for improving the bright line of the backlight edge of the utility model;

[0026] Figure 3 It is a structural schematic diagram of another embodiment of the display screen structure for improving the bright line of the backlight edge of the utility model;

[0027] Figure 4 It is a structural schematic diagram of an existing display screen structure;

[0028] The markings in the figure are as follows: 1. light guide plate; 10. ink absorption block; 2. diffusion film; 3. lower brightness enhancement film; 4. upper brightness enhancement film; 5. reflective film; 6. iron frame; 7. light-shielding glue; 8. glue frame; 9. ink layer. DETAILED DESCRIPTION

[0029] 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.

[0030] As described in the background technology, in the prior art, for mobile phone displays, consumers have higher and higher requirements for the display effect of mobile phone displays. As the light source component of the mobile phone display, the light output effect of the backlight directly affects the display effect of the display. Figure 4As shown in the figure, the basic structure of the backlight of the existing mobile phone display screen is composed of a "cavity" composed of an iron frame and a rubber frame to carry various optical film materials. In order to prevent the film materials from being squeezed and wrinkled after being in contact with the rubber frame after high-temperature expansion during the reliability environmental test, causing uneven display effects, a certain gap is usually left between each film material and the rubber iron frame to provide expansion space for each film material. However, in the actual production process, due to poor tolerance control during film material assembly, part of the light will be reflected back after passing through the light guide plate 100 and hitting the rubber frame 800. These light rays LO do not pass through the diffusion film 200, but directly pass through the gap between the film material and the rubber frame 800, and enter the prism structure of the brightness enhancement film 400, and are emitted along the direction of the prism of the brightness enhancement film 400. The human eye E can see the emitted light at a certain angle. For slight emitted light, a small angle is required to see it. For severe emitted light, it can be seen by looking straight ahead. This kind of emitted light seriously affects the color rendering effect of the display screen.

[0031] In order to solve this technical problem, the utility model provides a display screen structure for improving the bright line of the backlight edge, comprising a light guide plate 1, a diffusion film 2 is provided on the upper surface of the light guide plate 1, a lower light enhancement film 3 is provided on the upper surface of the diffusion film 2, an upper light enhancement film 4 is provided on the upper surface of the lower light enhancement film 3, a reflective film 5 is provided on the lower surface of the light guide plate 1, an iron frame 6 is provided on the lower surface of the reflective film 5, a glue frame 8 is provided on the edge of the iron frame 6, a light shielding glue 7 is provided on the top of the glue frame 8, and the edge of the diffusion film 2 exceeds the lower light enhancement film 3. The edge of the diffusion film 2 exceeds the light guide plate 1. The edges of the lower light enhancement film 3 and the upper light enhancement film 4 are aligned. The edges of the light guide plate 1 and the reflective film 5 are aligned.

[0032] Through the above structural design, the light guide plate 1 projects light upward. Since the edge of the diffusion film 2 exceeds the lower brightness enhancement film 3, the light L projected in the direction of the glue frame 8 is blocked by the protruding edge of the diffusion film 2, thereby greatly reducing the light projected from the light guide plate 1 in the direction of the glue frame 8, reducing the reflected light on the glue frame 8, avoiding bright lines on the edges, and effectively avoiding the appearance of light at the edge of the display screen, thereby improving the display effect of the display screen.

[0033] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] Example 1

[0037] like Figure 1 As shown, the display screen structure for improving the bright line of the backlight edge includes a light guide plate 1, a diffusion film 2 is provided on the upper surface of the light guide plate 1, a lower light enhancement film 3 is provided on the upper surface of the diffusion film 2, an upper light enhancement film 4 is provided on the upper surface of the lower light enhancement film 3, a reflective film 5 is provided on the lower surface of the light guide plate 1, an iron frame 6 is provided on the lower surface of the reflective film 5, a glue frame 8 is provided on the edge of the iron frame 6, a light-shielding glue 7 is provided on the top of the glue frame 8, and the edge of the diffusion film 2 exceeds the lower light enhancement film 3.

[0038] It should be noted that the edge of the diffusion film 2 exceeds the light guide plate 1 .

[0039] In addition, the edges of the lower brightness enhancement film 3 and the upper brightness enhancement film 4 are aligned. The edges of the light guide plate 1 and the reflective film 5 are aligned.

[0040] The working mode of this embodiment is described below.

[0041] like Figure 1 As shown, the light guide plate 1 projects light upwards. Since the edge of the diffusion film 2 exceeds the lower brightness enhancement film 3, the light L projected toward the glue frame 8 is blocked by the protruding edge of the diffusion film 2, thereby greatly reducing the light projected from the light guide plate 1 toward the glue frame 8 and reducing the reflected light on the glue frame 8, effectively avoiding the appearance of light at the edge of the display screen and avoiding bright lines on the edge, thereby improving the display effect of the display screen.

[0042] Example 2

[0043] like Figure 2 As shown, the display screen structure for improving the backlight edge bright line provided in Example 1 is further optimized. Specifically, an ink layer 9 is provided at the edge of the lower surface of the diffusion film 2 , and the ink layer 9 faces the light guide plate 1 .

[0044] It should be noted that the ink layer 9 is in a sheet shape.

[0045] In addition, the ink layer 9 is black.

[0046] The working mode of this embodiment is described below.

[0047] The light guide plate 1 projects light upward, and the light L projected toward the glue frame 8 is absorbed by the black ink layer 9, further reducing the light projected toward the glue frame 8 by the light guide plate 1 and further reducing the reflected light on the glue frame 8, thereby further improving the display effect of the display screen.

[0048] Example 3

[0049] like Figure 3 As shown, the display screen structure for improving the backlight edge bright line provided in Example 1 or 2 is further optimized. Specifically, an ink absorption block 10 is provided at the edge of the lower surface of the diffusion film 2 , and the ink absorption block 10 faces the light guide plate 1 .

[0050] It should be noted that the ink absorbing block 10 is triangular in shape.

[0051] In addition, the ink absorbing block 10 is black.

[0052] In addition, a groove 81 is provided on the glue rack 8 , and the width of the groove 81 is greater than the thickness of the diffusion film 2 . The groove 81 can prevent the diffusion film from expanding and interfering with the glue rack 8 after the reliability test.

[0053] The working mode of this embodiment is described below.

[0054] The light guide plate 1 projects light upward, and the light L projected toward the glue frame 8 is absorbed by the triangular ink absorbing block 10. At the same time, the triangular ink absorbing block 10 also blocks the light L, further reducing the light projected from the light guide plate 1 toward the glue frame 8, and further reducing the reflected light on the glue frame 8, thereby further improving the display effect of the display screen.

[0055] The terms "coupling" and "coupling" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0056] 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.

[0057] 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 replace some of the technical features therein with equivalents. 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 display screen structure for improving the bright line of the backlight edge, characterized in that: The display screen structure for improving the backlight edge bright line comprises a light guide plate (1), a diffusion film (2) is provided on the upper surface of the light guide plate (1), a lower light enhancement film (3) is provided on the upper surface of the diffusion film (2), an upper light enhancement film (4) is provided on the upper surface of the lower light enhancement film (3), a reflective film (5) is provided on the lower surface of the light guide plate (1), an iron frame (6) is provided on the lower surface of the reflective film (5), a glue frame (8) is provided on the edge of the iron frame (6), a light shielding glue (7) is provided on the top of the glue frame (8), and the edge of the diffusion film (2) exceeds the lower light enhancement film (3).

2. The display screen structure for improving the bright line of the backlight edge according to claim 1, characterized in that: The edge of the diffusion film (2) exceeds the light guide plate (1).

3. The display screen structure for improving the bright line of the backlight edge according to claim 1, characterized in that: The edges of the lower brightness enhancement film (3) and the upper brightness enhancement film (4) are aligned.

4. The display screen structure for improving the backlight edge bright line according to claim 1, characterized in that: The edges of the light guide plate (1) and the reflective film (5) are aligned.

5. The display screen structure for improving the bright line of the backlight edge according to claim 1, characterized in that: An ink layer (9) is provided at the edge of the lower surface of the diffusion film (2), and the ink layer (9) faces the light guide plate (1).

6. The display screen structure for improving the bright line of the backlight edge according to claim 5, characterized in that: The ink layer (9) is in the form of a sheet.

7. The display screen structure for improving the bright line of the backlight edge according to claim 5, characterized in that: The ink layer (9) is black.

8. The display screen structure for improving the bright line of the backlight edge according to claim 1, characterized in that: An ink absorption block (10) is provided at the edge of the lower surface of the diffusion film (2), and the ink absorption block (10) faces the light guide plate (1).

9. The display screen structure for improving the bright line of the backlight edge according to claim 8, characterized in that: The ink absorbing block (10) is triangular in shape, and the glue rack (8) is provided with a grooved notch (81).

10. The display screen structure for improving the bright line of the backlight edge according to claim 8, characterized in that: The ink absorbing block (10) is black.

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