CN217112793U - A light guide plate, a backlight module and a display device - Google Patents

Abstract

The utility model discloses a light guide plate, a backlight module and a display device. The light guide plate includes: a light guide plate body; a accommodating recess; a light guide recess, the light guide recess is recessed on the front of the light guide body, and the inner wall of the light guide recess is far away from the light guide plate The direction of the front of the main body is contracted and arranged; the light-guiding protruding portion is protruded from the front of the light-guiding plate body, and the light-guiding protruding portion and the light-guiding concave portion are arranged adjacent to each other. . Both the light guide recess and the light guide protrusion can refract light, and the light reflected by the light guide recess can also be refracted by the light guide protrusion, which improves the utilization rate of light, reduces the loss of light, and increases the light source. The light-emitting angle of the light-emitting element can be concentrated within the viewing angle of the human eye, and the colorful light transformed by the light-guiding concave part can be decomposed after being refracted by the light-guiding convex part, which weakens the rainbow pattern, and the light is more uniform and Soft for better display effect.

Description

A light guide plate, a backlight module and a display device

technical field

The utility model relates to the field of display technology, in particular to a light guide plate, a backlight module and a display device.

Background technique

The backlight module is one of the key components of the display device. Its function is to supply sufficient brightness and uniformly distributed light source so that it can display images normally. The backlight module is a light source located behind the display device, and its luminous effect will directly affect the visual effect of the display device. Wherein the backlight module includes a light guide plate.

The prior art discloses a light guide plate, and the light guide plate is provided with a striped rough surface. However, the brightness of the light reflected by the striped rough surface is low, and there are rainbow patterns, which affect the display effect.

Utility model content

Therefore, the technical problem to be solved by the utility model is to overcome the defects of the light guide plate in the prior art, the brightness of the light reflected by the rough surface of the stripes is low, and there are rainbow patterns, thereby affecting the display effect, thereby providing a light guide plate .

A light guide plate, comprising:

Light guide plate body;

a plurality of receiving recesses, the receiving recesses are provided on the side of the light guide plate body, and are used to accommodate light source components;

A plurality of light guide recesses, the light guide recesses are recessed on the front of the light guide plate body, the inner walls of the light guide recesses are shrunk away from the front of the light guide plate body, wherein the light guide plate The front of the body is close to the display surface of the display device;

A plurality of light guiding protruding parts, the light guiding protruding parts protrude from the front of the light guiding plate body, and the light guiding protruding parts are arranged adjacent to the light guiding concave parts.

Further, the light guiding recessed part includes one or more light guiding recessed units, wherein when there are multiple light guiding recessed units, the plurality of light guiding recessed units are arranged in connection.

Further, the cross-section of the light guide recessed unit is arranged in a V shape in a first direction, wherein the first direction is perpendicular to the direction in which the front of the light guide plate body is located.

Further, the outer wall of the light guiding protruding part is contracted in a direction away from the front of the light guiding plate body.

Further, the protruding light guiding unit includes one or more protruding light guiding units, wherein when there are multiple protruding light guiding units, the multiple protruding light guiding units are arranged in connection.

Further, the cross-section of the protruding light guide unit in the first direction is arcuate or trapezoidal, wherein the first direction is perpendicular to the direction of the front of the light guide plate body.

Further, the inner wall of the accommodating recessed part is contracted along the light emitting direction of the light source element.

Further, the cross-section of the accommodating recessed portion in the second direction is trapezoidal, wherein the second direction is the direction in which the front of the light guide plate body is located.

A backlight module includes a light source component and the above-mentioned light guide plate, the light source component and the accommodating recessed portion are arranged opposite to each other.

A display device includes the above-mentioned backlight module.

The technical scheme of the utility model has the following advantages:

1. A light guide plate provided by the utility model, comprising: a light guide plate body; a number of accommodating recessed parts, which are provided on the side of the light guide plate body for accommodating light source components; a number of light guide recessed parts, The light guide recess is recessed on the front of the light guide plate body, and the inner wall of the light guide recess is shrunk in a direction away from the front of the light guide plate body, wherein the front of the light guide body is close to the display device The display surface; several light guide protrusions, the light guide protrusions protrude from the front of the light guide plate body, and the light guide protrusions are adjacent to the light guide recesses. A light guide plate with this structure is provided with a light guide recess and a light guide protrusion, both of which can refract light, and the light reflected by the light guide recess can also be guided The protruding part of the light is refracted, and the reflected light is reused many times, which improves the utilization rate of the light, reduces the loss of the light, increases the light angle of the light source and makes the light gather within the viewing angle of the human eye, and the light is guided The colorful light formed by the light concave part can be decomposed after being refracted by the light guide convex part again, which weakens the rainbow pattern and makes the light more uniform and soft, thus obtaining a better display effect; at the same time, it can reduce the number of light source components, The number of diaphragms reduces the thickness of the backlight module and reduces energy consumption.

2. In the light guide plate provided by the present utility model, the cross-section of the light guide recessed unit in the first direction is V-shaped, wherein the first direction is perpendicular to the direction where the front of the light guide plate body is located. The section of the protruding light guiding unit in the first direction is arcuate or trapezoidal. A light guide plate with this structure, by setting the cross-section of the light-guiding concave unit in a V shape and the cross-section of the light-guiding protruding unit in a bow shape, can further improve the utilization rate of light, reduce the loss of light, and further increase the size of the light source. The luminous angle and make the light gather in the viewing angle range of the human eye.

3. In the light guide plate provided by the utility model, the inner wall of the accommodating recessed portion shrinks along the light emitting direction of the light source component. In a light guide plate with this structure, the inner wall of the accommodating recess is shrunk along the light emitting direction of the light source element, so that the light emitting angle between the light sources can be increased and the light can be gathered within the viewing angle range of the human eye.

4. A backlight module provided by the present invention comprises a light source part and the above-mentioned light guide plate, and the light source part is arranged opposite to the accommodating recessed part. A backlight module with this structure, since it includes the above-mentioned light guide plate, naturally has the advantages brought by including the above-mentioned light guide plate.

5. A display device provided by the utility model, comprising the above-mentioned backlight module. A display device with this structure, since it includes the above-mentioned backlight module, naturally has the advantages brought by including the above-mentioned backlight module.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

FIG. 1 is a schematic structural view of a light guide plate provided in Embodiment 1 of the present invention;

FIG. 2 is a partially enlarged view of the light guide plate shown in FIG. 1;

Fig. 3 is a top view of the light guide plate shown in Fig. 1;

FIG. 4 is a partially enlarged view of the light guide plate shown in FIG. 3;

Fig. 5 is a side view of the light guide plate shown in Fig. 4;

FIG. 6 is a partially enlarged view of the light guide plate shown in FIG. 5;

FIG. 7 is a structural schematic diagram of the light guide plate shown in FIG. 6 showing the passage of some light rays;

FIG. 8 is a partially enlarged bottom view of the light guide plate shown in FIG. 1;

Fig. 9 is a partial enlarged view of another light guiding recessed unit and light guiding protruding unit shown in Fig. 1;

Fig. 10 is a schematic structural diagram of the light source device shown in Fig. 1;

Fig. 11 is a partially enlarged view of the light source device shown in Fig. 10;

Explanation of reference signs:

1-Light guide plate body, 2-Accommodating recessed part, 3-Light guiding recessed part, 31-Light guiding recessed unit, 4-Light guiding protruding part, 41-Light guiding protruding unit, 5-Light source part, 51-Lamp strip, 52-LED lamp bead, 53-wire.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

Example 1

This embodiment provides a light guide plate, as shown in FIG. 1 to FIG. 9 , which includes a light guide plate body 1 , several receiving recesses 2 , several light guide recesses 3 and several light guide protrusions 4 . Specifically, the light guide plate can be an ELED light guide plate.

In this embodiment, the light guide recess 3 is recessed on the front of the light guide plate body 1, and the inner wall of the light guide recess 3 shrinks in a direction away from the front of the light guide plate body 1, wherein the front of the light guide body 1 is close to the display device display surface.

As shown in FIG. 6 and FIG. 7 , the light guiding recessed portion 3 includes a light guiding recessed unit 31 . Specifically, the cross-section of the light guide recess unit 31 in the first direction is V-shaped or arc-shaped or arranged in other shapes, wherein the first direction is perpendicular to the front direction of the light guide plate body 1 . As an alternative implementation manner, as shown in FIG. 9 , the light guiding recessed part 3 may be set to include a plurality of light guiding recessed units 31 , and the plurality of light guiding recessed units 31 are arranged in connection.

In this embodiment, the light guiding protruding portion 4 protrudes from the front of the light guiding plate body 1 , and the light guiding protruding portion 4 and the light guiding concave portion 3 are adjacently arranged. Wherein, the outer wall of the light guide protruding portion 4 shrinks away from the front of the light guide plate body 1 .

As shown in FIG. 6 and FIG. 7 , the light guide protrusion 4 includes a light guide protrusion unit 41 . Specifically, the cross-section of the light guiding protruding unit 41 in the first direction is arranged in an arc or trapezoid or other shapes. As an alternative implementation manner, as shown in FIG. 9 , the protruding light guide part 4 may be set to include a plurality of protruding light guide units 41 , and the protruding light guide units 41 are connected and arranged.

By setting the cross-section of the light-guiding recessed unit 31 to be V-shaped and the cross-section of the light-guiding protruding unit 41 to be bow-shaped, the utilization rate of light can be further improved, the loss of light can be reduced, and the light-emitting angle of the light source 5 can be further increased and made Light is concentrated toward the viewing angle of the human eye.

The accommodating recessed portion 2 in this embodiment is provided on the side of the light guide plate body 1 for accommodating the light source element 5 . Wherein, the inner wall of the accommodating recessed portion 2 is contracted along the light emitting direction of the light source element 5 . Specifically referring to FIG. 4 and FIG. 8 , the section of the receiving recess 2 in the second direction is trapezoidal or other shapes, wherein the second direction is the direction in which the front of the light guide plate body 1 is located. By constricting the inner wall of the accommodating recessed portion 2 along the light emitting direction of the light source element 5, the light emitting angle between the light sources can be increased and the light can be gathered within the viewing angle range of the human eye.

It should be noted that, as shown in FIG. 1 , FIG. 2 , FIG. 4 , FIG. 10 and FIG. 11 , the light source element 5 includes a light bar 51 and LED lamp beads 52 , and the LED lamp beads 52 are uniformly arranged on the light bar 51 . Specifically, the light bar 51 can be an aluminum substrate or others, and the light bar 51 is also connected to the wire 53 .

A light guide plate of the present utility model is provided with a light guide recessed part 3 and a light guide protruding part 4, and both the light guide recessed part 3 and the light guide protruding part 4 can refract light, and the light reflected by the light guide recessed part 3 The light can also be refracted by the light guide protrusion 4, and the reflected light can be reused many times, which improves the utilization rate of the light, reduces the loss of the light, increases the light emitting angle of the light source part 5 and makes the light go to the viewing angle of the human eye Gathering within a certain range, and the colorful light formed by the light passing through the light guide concave part 3 can be decomposed after being refracted by the light guide protruding part 4 again, which weakens the rainbow pattern, makes the light more uniform and soft, and thus obtains a better display effect ; At the same time, the number of light source parts 5 and diaphragms can be reduced, the thickness of the backlight module can be reduced, and energy consumption can be reduced.

Example 2

This embodiment provides a backlight module, including the light source component 5 shown in FIG. 4 , FIG. 10 and FIG. 11 and the light guide plate in Embodiment 1, and the light source component 5 and the receiving recessed portion 2 are arranged opposite to each other.

Example 3

This embodiment provides a display device, including the backlight module in Embodiment 2.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims (10)

1. A light guide plate, characterized in that, comprising: Light guide plate body; a plurality of receiving recesses, the receiving recesses are provided on the side of the light guide plate body, and are used to accommodate light source components; A plurality of light guide recesses, the light guide recesses are recessed on the front of the light guide plate body, the inner walls of the light guide recesses are shrunk away from the front of the light guide plate body, wherein the light guide plate The front of the body is close to the display surface of the display device; A plurality of light guiding protruding parts, the light guiding protruding parts protrude from the front of the light guiding plate body, and the light guiding protruding parts are arranged adjacent to the light guiding concave parts. 2. A light guide plate according to claim 1, wherein the light guide recessed portion comprises one or more light guide recessed units, wherein when there are multiple light guide recessed units, the plurality of light guide recessed units The light guiding recessed unit is connected and arranged. 3. The light guide plate according to claim 2, wherein the cross-section of the light guide recess unit in the first direction is V-shaped, wherein the first direction is perpendicular to the front of the light guide plate body direction. 4 . The light guide plate according to claim 3 , wherein the outer wall of the light guide protruding portion shrinks in a direction away from the front of the light guide plate body. 5 . 5. A light guide plate according to claim 4, characterized in that, the light guide protruding part comprises one or more light guide protruding units, wherein when there are multiple light guide protruding units , a plurality of said light guiding protruding units are connected and arranged. 6 . The light guide plate according to claim 5 , wherein a section of the protruding light guide unit in the first direction is arranged in an arc or trapezoidal shape. 6 . 7. The light guide plate according to any one of claims 1 to 6, characterized in that, the inner wall of the accommodating recessed portion shrinks along the light emitting direction of the light source element. 8 . The light guide plate according to claim 7 , wherein a cross-section of the receiving recessed portion in a second direction is trapezoidal, wherein the second direction is the direction in which the front of the light guide plate body is located. 9. A backlight module, characterized by comprising a light source element and the light guide plate according to any one of claims 1 to 8, the light source element and the accommodating recessed portion are disposed opposite to each other. 10. A display device, comprising the backlight module according to claim 9.

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