Backlight guide plate with fool-proof structure

Abstract

The utility model discloses a backlight light guide plate with a fool-proof structure, the backlight light guide plate with the fool-proof structure comprises a light guide plate body, one corner of the upper surface of the light guide plate body is provided with a cutting corner, and the cutting corner comprises a first cutting edge and a second cutting edge. By utilizing the cutting angle at one corner of the light guide plate body, a worker can easily distinguish the front and back surfaces, the left and right surfaces and the upper and lower surfaces of the backlight light guide plate, and the backlight light guide plate is strong in intuition, convenient to operate and good in fool-proof performance. And meanwhile, the cutting angle is completely covered by the backlight rubber frame, so that the performance of the backlight light guide plate is not influenced at all.

Description

Technical Field

[0001] The utility model relates to a light guide plate, more specifically, to a backlight light guide plate with a fool-proof structure. Background Art

[0002] Product rework is a cost-saving way to repair products, and reworking backlights is one of them. The structure of the light guide plate has wedge-shaped (the cross-section is a trapezoidal structure) and rectangular (the cross-section is a rectangle) shapes. Even the wedge-shaped light guide plate has different gradients. Some wedge-shaped light guide plates are similar to rectangular light guide plates, and the naked eye cannot distinguish the front and back, left and right sides, and top and bottom. In the process of reworking some backlights, the light guide plate of the backlight light guide part needs to be taken out, but because of its appearance, it is difficult to distinguish the front and back, left and right sides, and top and bottom with the naked eye, so during the reassembly process, it is very likely that the removed light guide plate will be assembled into the backlight incorrectly. This loses the purpose of rework. Therefore, it is necessary to design the light guide plate to prevent mistakes.

[0003] Chinese invention patent document CN1979290B discloses a light guide plate, which includes: a light incident surface, which is arranged at a corner of the light guide plate, a light emitting surface adjacent to the light incident surface, and a bottom surface opposite to the light emitting surface, characterized in that: a plurality of mutually parallel straight strip microstructures are arranged on the light emitting surface, and a plurality of arc-shaped microstructures facing the light incident surface are arranged on the bottom surface; the straight strip microstructures are distributed along a direction parallel to the light incident surface, and the arc-shaped microstructures are discontinuously distributed along the arc direction. The microstructures on the light emitting surface and the microstructures on the bottom surface are V-shaped grooves. There are gaps between the straight strip V-shaped grooves on the light emitting surface. There are gaps between the plurality of arc-shaped V-shaped grooves. The patent also discloses a method for manufacturing a light guide plate, which includes the following steps: providing a light guide plate mold with microstructures obtained by a method of exposure using a deep ultraviolet light lithography system; fixing the light guide plate mold on a metal mold, injecting the material forming the light guide plate into the mold, and obtaining a light guide plate body; using the light guide plate mold to form a plurality of mutually parallel straight strip-shaped microstructures on the light-emitting surface of the light guide plate body; using the light guide plate mold to form a plurality of arc-shaped microstructures facing the light-incoming surface on the bottom surface of the light guide plate body. The light guide plate body is made by hot pressing or injection molding. The manufacturing method of the light guide plate mold includes the following steps: providing a substrate and coating the substrate with a photoresist; irradiating the photoresist with deep ultraviolet laser light generated by a photolithography system; developing the exposed photoresist to form a microstructure on the substrate to obtain a substrate with a microstructure; electroplating a metal layer on the substrate with the microstructure and on the surface of the microstructure, and performing electroless electroforming on the surface of the metal layer to obtain an electroformed layer; separating the metal layer and the electroformed layer from the substrate to obtain a light guide plate mold with a metal layer and an electroformed layer. The photolithography system includes: a laser light source for generating laser light; a light separator for receiving the laser light and separating the laser light by reflection and transmission to obtain a transmission laser light and a reflection laser light; a first light modulator for receiving the transmission laser light from the light separator and adjusting the phase of the transmission laser light to obtain laser lights of different phases; a second light modulator for receiving the reflection laser light from the light separator and adjusting the phase of the reflection laser light to obtain laser lights of different phases; a light synthesizer for receiving the reflection laser light and the transmission laser light from the light modulator and emitting the laser light in a certain direction by reflection and transmission; a focusing device for receiving the laser light emitted from the light synthesizer and focusing it. The focusing device includes a converging lens and a rotating platform. The focusing device receives the laser light passing through the light synthesizer and focuses it on the rotating platform through the converging lens.

[0004] Obviously, the patent uses a deep ultraviolet lithography system for exposure to etch a light guide plate mold with a high-precision V-groove to produce a light guide plate with a high-precision structure, reduce the microstructure to absorb light, avoid the use of high-intensity light sources, and reduce costs. The use of this light guide plate mold can quickly manufacture light guide plates, improve product manufacturing yield, speed up the manufacturing time of light guide plates, and further reduce costs. However, this solution cannot solve the existing light guide plate identification problem. Utility Model Content

[0005] Based on this, it is necessary to provide a backlight light guide plate with a fool-proof structure for the above technical problems. The backlight light guide plate with a fool-proof structure includes a light guide plate body, and a cutting angle is provided at a corner of the upper surface of the light guide plate body. The cutting angle includes a first cutting edge and a second cutting edge. By using the cutting angle on a corner of the light guide plate body, workers can easily distinguish the front and back sides, left and right sides, and upper and lower sides of the backlight light guide plate, which is intuitive, easy to operate, and has good fool-proof properties. At the same time, the cutting angle is completely covered by the backlight rubber frame, and does not affect the performance of the backlight light guide plate at all.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A backlight light guide plate with an anti-foolproof structure, characterized in that the backlight light guide plate with the anti-foolproof structure comprises a light guide plate body, a corner of the upper surface of the light guide plate body is provided with a cutting angle, and the cutting angle comprises a first cutting edge and a second cutting edge.

[0008] As a preferred implementation of the backlight guide plate with fool-proof structure provided by the utility model, the cutting depth of the cutting angle is half of the thickness of the light guide plate body.

[0009] As a preferred implementation of the backlight guide plate with fool-proof structure provided by the utility model, the length of the first cutting edge is consistent with that of the second cutting edge.

[0010] As a preferred implementation of the backlight guide plate with fool-proof structure provided by the utility model, the length of the first cutting edge is greater than that of the second cutting edge.

[0011] As a preferred implementation of the backlight guide plate with fool-proof structure provided by the utility model, the length of the first cutting edge is twice that of the second cutting edge.

[0012] As a preferred implementation of the backlight guide plate with fool-proof structure provided by the utility model, the surface of the cutting corner is provided with marking points.

[0013] As a preferred implementation of the backlight guide plate with fool-proof structure provided by the utility model, the marking point is red.

[0014] As a preferred implementation of the backlight guide plate with fool-proof structure provided by the utility model, the marking point is a protruding structure.

[0015] As a preferred implementation of the backlight guide plate with fool-proof structure provided by the utility model, the cutting corner is provided with a chamfered surface.

[0016] As a preferred implementation of the backlight guide plate with fool-proof structure provided by the utility model, the chamfered surface is red.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides a backlight guide plate with a foolproof structure. By using the cutting angle on one corner of the light guide plate body, workers can easily distinguish the front and back sides, left and right sides, and upper and lower sides of the backlight guide plate. The utility model has strong intuitiveness, convenient operation, and good foolproofness. At the same time, the cutting angle is completely covered by the backlight rubber frame, and the performance of the backlight guide plate is not affected at all.

[0019] In addition, the length of the first cutting edge can be greater than the second cutting edge. Preferably, the length of the first cutting edge is twice that of the second cutting edge. Since the length of the first cutting edge is twice that of the second cutting edge, a more direct and reliable identification effect can be provided for workers.

[0020] In addition, a marking point may be provided on the surface of the cut corner. The marking point is red. The marking point is a protruding structure. Since the marking point is directly located on the surface of the cut corner, it further assists the worker to quickly identify the front and back sides, left and right sides, and upper and lower sides of the light guide plate, making the operation more convenient.

[0021] In addition, the cutting corner can be provided with a chamfered surface. The chamfered surface is red. The red chamfered surface can not only prevent the corners of the light guide plate body from being hit and injured, but also prevent the corners from stabbing the fingers of workers, achieving multiple goals at one stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 This is a schematic structural diagram of a backlight guide plate with a foolproof structure of the utility model;

[0024] Figure 2 for Figure 1 A detailed enlarged schematic diagram of area A of the structural schematic diagram of the backlight light guide plate;

[0025] Figure 3 for Figure 1 A schematic diagram of a partial three-dimensional structure of a backlight light guide plate with a foolproof structure;

[0026] Figure 4 for Figure 3 The three-dimensional structural diagram of the backlight light guide plate with the foolproof structure is another perspective;

[0027] Figure 5 It is a partial three-dimensional structural schematic diagram of another embodiment of the backlight guide plate with foolproof structure of the utility model;

[0028] Figure 6 for Figure 5 The three-dimensional structural diagram of the backlight light guide plate with the foolproof structure is another perspective;

[0029] Figure 7 It is a partial three-dimensional structural schematic diagram of another embodiment of the backlight guide plate with foolproof structure of the utility model;

[0030] Figure 8 It is a partial three-dimensional structural schematic diagram of another embodiment of the backlight guide plate with foolproof structure of the utility model;

[0031] The markings in the figure are as follows:

[0032] 1. Backlight guide plate; 11. Light guide plate body; 12. Cutting angle; 121. First cutting edge; 122. Second cutting edge; 13. Marking point; 14. Chamfered surface; D1. Thickness; D2. Cutting depth. DETAILED DESCRIPTION

[0033] 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.

[0034] As described in the background technology, the prior art has light guide plates in the form of wedges (a trapezoidal cross section) and rectangles (a rectangular cross section). Even wedge-shaped light guide plates have different gradients. Some wedge-shaped light guide plates are similar to rectangular light guide plates, and the front and back sides, left and right sides, and top and bottom sides cannot be distinguished by the naked eye. In the process of reworking some backlights, the light guide plate of the backlight light-guiding part needs to be taken out. However, due to its appearance, it is difficult to distinguish the front and back sides, left and right sides, and top and bottom sides by the naked eye. Therefore, during the reassembly process, it is very likely that the taken-out light guide plate will be incorrectly assembled into the backlight. This defeats the purpose of the rework.

[0035] In order to solve this technical problem, the utility model provides a backlight light guide plate 1 with a foolproof structure, comprising a light guide plate body 11, a cutting corner 12 is provided at a corner of the upper surface of the light guide plate body 11, and the cutting corner 12 comprises a first cutting edge 121 and a second cutting edge 122. The cutting depth D2 of the cutting corner 12 is half of the thickness D1 of the light guide plate body 11.

[0036] Through the above structural design, by using the cut corner 12 on one corner of the light guide plate body 11, workers can easily distinguish the front and back sides, left and right sides, and top and bottom sides of the backlight light guide plate 1, which is intuitive, easy to operate, and foolproof. At the same time, the cut corner 12 is completely covered by the backlight plastic frame, and does not affect the performance of the backlight light guide plate at all.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Example 1

[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the backlight light guide plate 1 with foolproof structure comprises a light guide plate body 11 , a cutting corner 12 is provided at one corner of the upper surface of the light guide plate body 11 , and the cutting corner 12 comprises a first cutting edge 121 and a second cutting edge 122 .

[0042] It should be noted that the cutting depth D2 of the cutting corner 12 is half of the thickness D1 of the light guide plate body 11 .

[0043] In addition, the length of the first cutting edge 121 is consistent with that of the second cutting edge 122 .

[0044] The working mode of this embodiment is described below.

[0045] By using the cut corner 12 on one corner of the light guide plate body 11, workers can easily identify the front and back sides, left and right sides, and top and bottom sides of the backlight light guide plate 1, which is intuitive, easy to operate, and foolproof. At the same time, the cut corner 12 is completely covered by the backlight plastic frame, and does not affect the performance of the backlight light guide plate at all.

[0046] Example 2

[0047] like Figure 5 and Figure 6 As shown, the backlight guide plate with the foolproof structure provided in Example 1 is further optimized. Specifically, the length of the first cutting edge 121 is greater than that of the second cutting edge 122 .

[0048] It should be noted that the length of the first cutting edge 121 is twice that of the second cutting edge 122 .

[0049] The working mode of this embodiment is described below.

[0050] Since the length of the first cutting edge 121 is twice that of the second cutting edge 122 , a more direct and reliable identification effect can be provided to workers.

[0051] Example 3

[0052] like Figure 7 As shown, the backlight guide plate with foolproof structure provided in embodiment 1 or 2 is further optimized. Specifically, a marking point 13 is provided on the surface of the cutting corner 12. The marking point 13 is red. It should be noted that the marking point 13 is a protruding structure.

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

[0054] Since the marking point 13 is directly located on the surface of the cutting corner 12 , it further assists the worker to quickly identify the front and back sides, left and right sides, and top and bottom sides of the light guide plate 1 , making the operation more convenient.

[0055] Example 4

[0056] like Figure 8 As shown, the backlight guide plate with the foolproof structure provided in Example 1 or 2 is further optimized. Specifically, the cutting corner 12 is provided with a chamfered surface 14 .

[0057] It should be noted that the chamfered surface 14 is red.

[0058] The working mode of this embodiment is described below.

[0059] The red chamfered surface 14 can be used to prevent the corners of the light guide plate body 11 from being hit and damaged, and can also prevent the corners from piercing the fingers of workers, thus achieving two goals at one stroke.

[0060] 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.

[0061] 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.

[0062] 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 backlight guide plate with a foolproof structure, characterized in that: The backlight guide plate (1) with a foolproof structure comprises a light guide plate body (11), a corner of the upper surface of the light guide plate body (11) is provided with a cutting corner (12), and the cutting corner (12) comprises a first cutting edge (121) and a second cutting edge (122).

2. The backlight guide plate with foolproof structure according to claim 1, characterized in that: The cutting depth (D2) of the cutting angle (12) is half the thickness (D1) of the light guide plate body (11).

3. The backlight guide plate with foolproof structure according to claim 1, characterized in that: The length of the first cutting edge (121) is consistent with that of the second cutting edge (122).

4. The backlight guide plate with foolproof structure according to claim 1, characterized in that: The first cutting edge (121) is longer than the second cutting edge (122).

5. The backlight guide plate with foolproof structure according to claim 4, characterized in that: The length of the first cutting edge (121) is twice that of the second cutting edge (122).

6. The backlight guide plate with foolproof structure according to claim 1, characterized in that: The surface of the cutting corner (12) is provided with a marking point (13).

7. The backlight guide plate with foolproof structure according to claim 6, characterized in that: The marking point (13) is red.

8. The backlight guide plate with foolproof structure according to claim 6, characterized in that: The marking point (13) is a protruding structure.

9. The backlight guide plate with foolproof structure according to claim 1, characterized in that: The cutting corner (12) is provided with a chamfered surface (14).

10. The backlight guide plate with foolproof structure according to claim 9, characterized in that: The chamfered surface (14) is red.

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