CN209803373U

CN209803373U - Light guide plate and backlight module

Info

Publication number: CN209803373U
Application number: CN201920809198.6U
Authority: CN
Inventors: 黄清海; 黄耀鹭; 汤璐欣
Original assignee: YIJINLU TECHNOLOGY Co Ltd
Current assignee: YIJINLU TECHNOLOGY Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2019-12-17
Anticipated expiration: 2029-05-31

Abstract

The utility model relates to a backlight technical field relates to a light guide plate and backlight module especially. The utility model discloses a light guide plate, including the light guide plate body, the light guide plate body includes the play plain noodles, the bottom surface relative with the play plain noodles and goes into the light side with play plain noodles vertically, it is provided with V-CUT structure to go into the light side, V-CUT structure includes a plurality of bar grooves that are parallel to each other and equidistant setting, bar groove's cross section is the circular arc type. The utility model also discloses a backlight module. The utility model discloses both can improve the lamp shadow effect, can adopt laser to make the hot embossing template of V-CUT structure again, not only reduce the processing degree of difficulty, raise the efficiency, and greatly reduced cost.

Description

Light guide plate and backlight module

Technical Field

The utility model belongs to the technical field of the backlight, specifically relate to a light guide plate and backlight module.

Background

At present, a light guide plate is a key component of a backlight module because the light guide plate can convert a linear light source into a surface light source, the backlight module is a provider of a Liquid Crystal Display (LCD) light source, and in order to save cost, the number of light particles of an LED light bar of the backlight module is reduced by some manufacturers, so that gaps between the LED light and the LED light are too large, and the phenomenon of light shadow is easily formed. In order to eliminate the lamp shadow phenomenon, the light shadow phenomenon is generally solved by making sparse dots at the positions corresponding to the LED lamps and making dense dots corresponding to the intervals between the LED lamps, but if the intervals between the LED lamps are large, the lamp shadow phenomenon still cannot be completely eliminated, and therefore, the V-CUT structure is also arranged at the light incident side of the light guide plate to further eliminate the lamp shadow phenomenon.

However, most of the existing V-CUT structures can only be directly carved or formed by hobbing impression through a cutter, and hobbing also needs to be carved and formed by the cutter, so that the cutter is needed to carve no matter the cutter is directly carved or formed by hobbing impression, the precision requirement is high, the processing difficulty is high, the efficiency is low, and the cost is high.

disclosure of Invention

An object of the utility model is to provide a light guide plate and backlight module are used for solving the technical problem that the aforesaid exists.

In order to realize the purpose, the light guide plate comprises a light guide plate body, wherein the light guide plate body comprises a light outlet surface, a bottom surface opposite to the light outlet surface and a light inlet side vertical to the light outlet surface, the light inlet side is provided with a V-CUT structure, the V-CUT structure comprises a plurality of strip-shaped grooves which are parallel to each other and are arranged at equal intervals, the cross section of each strip-shaped groove is in an arc shape, and the interval between every two adjacent strip-shaped grooves is greater than 0.06 mm.

Furthermore, the interval between adjacent strip-shaped grooves is 0.06-0.2 mm.

furthermore, the cross section of the strip-shaped groove is semicircular.

Furthermore, the depth of the strip-shaped groove is 0.01-0.05 mm.

Further, the width of the strip-shaped groove is 0.045-0.15 mm.

Further, the V-CUT structure is formed by template hot stamping.

Furthermore, the bottom surface is provided with a dot structure, the dot structure is positioned between the light incidence side and the display area of the liquid crystal display AA, the dot density of the area corresponding to the LED lamp is less than that of other areas, and the dot density of the area corresponding to the LED lamp and the area between the LED lamps is greater than that of other areas.

The utility model also discloses a backlight module includes as above at least the light guide plate.

The utility model has the advantages of:

The utility model discloses both can improve the lamp shadow effect, can adopt laser to make the hot embossing template of V-CUT structure again, not only reduce the processing degree of difficulty, improve preparation efficiency, and greatly reduced cost.

Furthermore, the utility model discloses a to the processing of site structure, further improve the lamp shadow effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

Fig. 2 is a schematic structural view of another view angle according to an embodiment of the present invention;

Fig. 3 is a schematic view of a part of the structure of the embodiment of the present invention.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1-3, a light guide plate comprises a light guide plate body 1, wherein the light guide plate body 1 comprises a light emergent surface 11, a bottom surface 13 opposite to the light emergent surface 11 and a light incident side 12 perpendicular to the light emergent surface 11, the light incident side 12 is provided with a V-CUT structure, the V-CUT structure comprises a plurality of strip-shaped grooves 121 which are parallel to each other and are arranged at equal intervals, the cross section of each strip-shaped groove 121 (namely, the cross section parallel to the light emergent surface 11) is an arc shape, and the interval between every two adjacent strip-shaped grooves 121 is greater than 0.06 mm.

The V-CUT structure is arranged on the light incident side 12, when the light 21 emitted by the LED lamp 2 passes through the strip-shaped groove 121, refraction occurs, the divergence angle of the light 21 is enlarged, and as shown in figure 2, the dark space between the LED lamp 2 and the LED lamp 2 can be effectively compensated, so that the lamp shadow effect is improved; meanwhile, the V-CUT structure can firstly irradiate the V-CUT structure onto the template through laser, and then the template is heated to a proper temperature for impression forming, so that a cutter is not required for carving, the processing difficulty is reduced, the efficiency is improved, and the cost is greatly reduced.

In this embodiment, the interval L between adjacent bar-shaped grooves 121 is preferably 0.06-0.2mm, if the interval L is less than 0.06mm, the bar-shaped grooves 121 are not easy to be manufactured, and the forming effect is poor, and if the interval L is greater than 0.2mm, the diffusion effect of the light 21 is affected, thereby affecting the improvement of the lamp shadow.

In this embodiment, the cross section of the strip-shaped groove 121 is preferably semicircular, so that the manufacturing is easy and the molding effect is good.

In this embodiment, the depth H of the strip-shaped groove 121 is preferably 0.01-0.05mm, which not only satisfies the requirement of the V-CUT structure not being easily worn, but also improves the light diffusion effect.

In this embodiment, the width D of the strip-shaped groove 121 is preferably 0.045-0.15mm, which is easy to process, improves the forming effect, and can improve the light diffusion effect.

In the embodiment, the V-CUT structure is formed by template hot stamping, and is simple to manufacture, high in efficiency and low in cost.

in this embodiment, the bottom surface 13 is provided with a dot structure 14, the dot structure is located between the light incident side 12 and the AA display area 131 of the liquid crystal display, and the dot density of the area 141 corresponding to the LED lamp 2 is less than that of other areas; which corresponds to the region 142 between the LED lamp 2 and the LED lamp 2 having a dot density greater than that of the other regions. Since the position corresponding to the LED lamp 2 is brighter, the dots of the area 141 corresponding to the LED lamp 2 are reduced, so that the scattering of light is reduced and the position is not as bright; and the position corresponding to the position between the LED lamp 2 and the LED lamp 2 is darker, the dot corresponding to the area 142 between the LED lamp 2 and the LED lamp 2 is increased, so that the scattering of light is increased, and the position is not so dark, thereby further effectively eliminating the lamp shadow.

In this embodiment, the areas 141 and 142 are preferably semi-elliptical, as shown in fig. 3, to further improve the light shadow elimination effect, and a small area of the area 141 and/or the area 142 may extend into the AA display area 131 of the lcd.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a light guide plate, includes the light guide plate body, the light guide plate body includes goes out the plain noodles, with go out the relative bottom surface of plain noodles and with go out the perpendicular income light side of plain noodles, it is provided with V-CUT structure, its characterized in that to go into the light side: the V-CUT structure comprises a plurality of strip-shaped grooves which are parallel to each other and are arranged at equal intervals, the cross section of each strip-shaped groove is in an arc shape, and the interval between every two adjacent strip-shaped grooves is larger than 0.06 mm.

2. The light guide plate according to claim 1, wherein: the interval between adjacent strip-shaped grooves is 0.06-0.2 mm.

3. The light guide plate according to claim 2, wherein: the cross section of the strip-shaped groove is semicircular.

4. The light guide plate according to claim 3, wherein: the depth of the strip-shaped groove is 0.01-0.05 mm.

5. The light guide plate according to claim 2, 3 or 4, wherein: the width of the strip-shaped groove is 0.045-0.15 mm.

6. The light guide plate according to claim 1, wherein: the V-CUT structure is formed by template hot stamping.

7. The light guide plate according to claim 1, wherein: the bottom surface is provided with a dot structure, the dot structure is positioned between the light incidence side and the AA display area of the liquid crystal display, the dot density of the area corresponding to the LED lamp is less than that of other areas, and the dot density of the area corresponding to the LED lamp and the area between the LED lamps is greater than that of other areas.

8. A backlight module is characterized in that: comprising at least a light guide plate according to any one of claims 1 to 7.