CN211293330U - Ear structure for improving light leakage of light guide plate - Google Patents
Ear structure for improving light leakage of light guide plate Download PDFInfo
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- CN211293330U CN211293330U CN201921939807.6U CN201921939807U CN211293330U CN 211293330 U CN211293330 U CN 211293330U CN 201921939807 U CN201921939807 U CN 201921939807U CN 211293330 U CN211293330 U CN 211293330U
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Abstract
The utility model relates to a side income formula TV backlight unit technical field, concretely relates to improve ear structure of light guide plate light leak, this ear structure sets up the left and right sides at the light guide plate, the ear structure adopts unconventional hypotenuse design, including last straight flange, last hypotenuse, middle straight flange, lower hypotenuse and lower straight flange, last hypotenuse and lower hypotenuse, lower straight flange set up along the perpendicular bisector symmetry of middle straight flange, the contained angle between last hypotenuse, lower hypotenuse and the middle straight flange is 3~7 °; the utility model provides an ear structure is through comparing with current light guide plate ear structure, and it is through last straight flange and middle straight flange, down the straight flange and middle straight flange between set up 3~7 hypotenuses, and diffuse reflection route in the ear is lighted in the change that can directive property, has avoided the reverberation to produce the gathering by the ear secondary diffuse reflection of current structure, has eliminated the light leak problem of light guide plate, has improved backlight unit's macroscopic view effect.
Description
Technical Field
The utility model relates to a side income formula TV backlight unit technical field, concretely relates to improve ear structure of light guide plate light leak.
Background
Currently, a light guide plate is an indispensable component in a side-entry TV backlight module, which is composed of an LED light source, a light guide plate and an optical film coated on the surface of the light guide plate. Aiming at the design of the backlight structure of the lower ultra-narrow frame, because the size of the light guide plate is smaller and smaller when the middle frame cover of the backlight assembly is pressed, a designer can design ear structures on the left side and the right side of the light guide plate in order to increase the fixity of the light guide plate.
The conventional ear structure of the existing design is a right-angle structure (as shown in fig. 1) or an arc-shaped structure (as shown in fig. 2), and the structure can concentrate light on a local right-angle edge or an arc edge of an ear in the diffuse reflection transmission process, so that light leakage is generated in a backlight ear region (as shown in fig. 3 and fig. 4), and the problem of light leakage cannot be effectively covered by a narrow frame in time, so that the macroscopic visual effect of a backlight module is seriously influenced. Therefore, it is a technical problem to be solved to design a light guide plate ear structure capable of improving the light leakage problem by changing the local diffuse reflection path of the scattered light in the ear, aiming at the problem of the light leakage caused by the spraying of the ear structure of the existing light guide plate.
SUMMERY OF THE UTILITY MODEL
The ears with the conventional right-angle structure or the circular arc structure can concentrate light on the local right-angle edges or the circular arc edges of the ears in the diffuse reflection transmission process, so that the problem of light leakage in the backlight ear area is caused. The utility model discloses a with the ear structure design for the ear structure of hypotenuse + arc structural grouping (as shown in fig. 5), can change the diffuse reflection route of light through this design (as shown in fig. 6) to the diffuse reflection route of dispersed light local in the ear reaches and improves the light leak problem, and the section that simultaneously can also avoid the cutter concatenation to produce is poor, can not cover the side subsides at light guide plate edge yet and produce the influence.
The utility model discloses a realize through following technical scheme:
the utility model provides an improve ear structure of light guide plate light leak, this ear structure sets up the left and right sides at the light guide plate, the ear structure adopts unconventional hypotenuse design, includes last straight flange, goes up hypotenuse, middle straight flange, lower hypotenuse and lower straight flange, go up hypotenuse and lower hypotenuse, lower straight flange along the perpendicular bisector symmetry setting of middle straight flange, the contained angle between last hypotenuse, lower hypotenuse and the middle straight flange is 3~ 7.
As a further improvement of the scheme, first arc-shaped edges are arranged between the upper straight edge and the upper inclined edge and between the lower straight edge and the lower inclined edge, and the corresponding angle of each first arc-shaped edge is 90-110 degrees.
As a further improvement of the scheme, second arc-shaped edges are arranged between the upper oblique edge and the middle straight edge and between the lower oblique edge and the middle straight edge, and the corresponding angle of the second arc-shaped edges is 30-60 degrees.
Has the advantages that:
compared with the existing light guide plate ear structure, the ear structure provided by the utility model has the advantages that 3-7-degree bevel edges are arranged between the upper straight edge and the middle straight edge, and between the lower straight edge and the middle straight edge, so that the diffuse reflection path of light in ears can be directionally changed, the reflected light is prevented from being gathered by the secondary diffuse reflection of ears of the existing structure, the light leakage problem of the light guide plate is eliminated, and the macroscopic visual effect of the backlight module is improved; in addition, the section difference generated by splicing the cutters can be well avoided through the design of the first arc-shaped edge and the second arc-shaped plate, the side pasting and the covering on the edge of the light guide plate can not be interfered, and the practicability is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a right-angled ear of a conventional light guide plate;
FIG. 2 is a schematic view of a circular ear in a conventional light guide plate;
FIG. 3 is a schematic diagram of the path of light rays in a right-angled ear in a conventional light guide plate;
FIG. 4 is a schematic view of the path of light rays in a circular arc-shaped ear in a conventional light guide plate;
FIG. 5 is a schematic view of an ear of the light guide plate of the present invention;
fig. 6 is a schematic view of the light path in the light guide plate of the present invention.
The LED light source comprises a light guide plate 1 and an LED lamp 2;
100-ear configuration, 101-middle straight edge, 102-upper straight edge, 103-upper oblique edge, 104-lower oblique edge, 105-lower straight edge, 106-first arc edge, 107-arc edge.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
Referring to fig. 5 and 6, an ear structure for improving light leakage of a light guide plate is shown, in which the ear structures 100 are disposed at the left and right sides of the light guide plate 1, and a set of LED lamps 2 is disposed below the light guide plate 1 for providing light source. The ear structure 100 adopts an unconventional bevel edge design, which includes an upper straight edge 102, an upper bevel edge 103, a middle straight edge 101, a lower bevel edge 104, and a lower straight edge 105, wherein the upper straight edge 102, the upper bevel edge 103, the lower bevel edge 104, and the lower straight edge 105 are symmetrically arranged along a perpendicular bisector of the middle straight edge 101, and an included angle between the upper bevel edge 103, the lower bevel edge 104, and the middle straight edge 101 is controlled to be in a range of 3-7 ° (as shown in fig. 5).
In addition, a first arc-shaped edge 106 is arranged between the upper straight edge 102 and the upper inclined edge 103, and between the lower straight edge 105 and the lower inclined edge 104, and the angle corresponding to the first arc-shaped edge 106 is 90-110 degrees. Second arc-shaped edges 107 are arranged between the upper oblique edge 103 and the middle straight edge 101, and between the lower oblique edge 104 and the middle straight edge 101, and the corresponding angle of the second arc-shaped edges 107 is 30-60 degrees (as shown in fig. 5).
When light emitted from the LED lamp 2 enters the lower end surface of the light guide plate 1 and then exits the ear structure 100 on the side surface of the light guide plate 1, the light is refracted and reflected at the upper straight edge 102, the upper oblique edge 103, the middle straight edge 101, the lower oblique edge 104, and the lower straight edge 105, respectively. Wherein the light refracted from the ear structure 100 forms a divergent angle therebetween, and the reflected light is incident into the light guide plate 1 (as shown in fig. 6), so that the light cannot be concentrated due to the second diffuse reflection.
Simultaneously at the fashioned in-process of actually cutting, because the design of first arc limit 106 and second arc limit 107, the section difference that the fashioned cutter concatenation of avoiding cutting that can be fine produced also can not make the side subsides to light guide plate 1 edge to cover and produce the interference, its processing is convenient, and the practicality is strong.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides an improve ear structure of light guide plate light leak, this ear structure sets up the left and right sides at the light guide plate, its characterized in that: the ear structure adopts the unconventional bevel edge design, and includes upper straight edge, upper bevel edge, middle straight edge, lower bevel edge and lower straight edge, upper bevel edge and lower bevel edge, lower straight edge set up along the perpendicular bisector of middle straight edge symmetry, the contained angle between upper bevel edge, lower bevel edge and the middle straight edge is 3~ 7.
2. The ear structure of claim 1, wherein the ear structure is configured to improve light leakage of the light guide plate, and comprises: first arc-shaped edges are arranged between the upper straight edge and the upper inclined edge, and between the lower straight edge and the lower inclined edge, and the corresponding angle of the first arc-shaped edges is 90-110 degrees.
3. The ear structure of claim 2, wherein the ear structure is configured to improve light leakage of the light guide plate, and comprises: and second arc-shaped edges are arranged between the upper bevel edge and the middle straight edge and between the lower bevel edge and the middle straight edge, and the corresponding angle of the second arc-shaped edges is 30-60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921939807.6U CN211293330U (en) | 2019-11-12 | 2019-11-12 | Ear structure for improving light leakage of light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921939807.6U CN211293330U (en) | 2019-11-12 | 2019-11-12 | Ear structure for improving light leakage of light guide plate |
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| Publication Number | Publication Date |
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| CN211293330U true CN211293330U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921939807.6U Active CN211293330U (en) | 2019-11-12 | 2019-11-12 | Ear structure for improving light leakage of light guide plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115542611A (en) * | 2022-11-25 | 2022-12-30 | 惠科股份有限公司 | Backlight module and display device |
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2019
- 2019-11-12 CN CN201921939807.6U patent/CN211293330U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115542611A (en) * | 2022-11-25 | 2022-12-30 | 惠科股份有限公司 | Backlight module and display device |
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