CN212255953U - Backlight module and terminal equipment - Google Patents

Abstract

The utility model discloses a backlight module and terminal equipment, the backlight module comprises a rubber frame, a reflector plate assembled on the rubber frame, and an optical module positioned above the reflector plate; be provided with black reflection gum on the reflector plate, when optical module was luminous, black reflection gum absorbed the partial light at optical module edge. The utility model discloses a with the reflector plate through black reflection gum with it is connected to glue the frame, black reflection gum is absorbing the partial light of optical module edge like this, and then will reduce the marginal luminance all around of light-emitting zone for the marginal luminance of light-emitting zone is more even with the regional luminance in the middle of light-emitting zone, thereby reaches the effect of improving the display screen in a poor light.

Description

Backlight module and terminal equipment

Technical Field

The utility model relates to a liquid crystal display technology field, in particular to backlight module and terminal equipment.

Background

Along with the better life quality of people, the requirements on electronic products are higher and higher, wherein the screen occupation ratio of the electronic products is well paid attention to people, and a water drop screen, a curved screen, a comprehensive screen and the like appear in sequence. As a new technology, the screen occupation ratio of the full-screen backlight module can reach the maximum, but for mobile equipment, the peripheral edge of a light emitting area of the full-screen backlight module can be brighter than a middle area due to light refraction, so that the backlight module has poor display effect due to light condensing bright lines at the periphery of a display area.

Thus, the prior art has yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's not enough, provide a backlight unit and terminal equipment.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts as follows:

a backlight module comprises a rubber frame, a reflector plate assembled on the rubber frame, and an optical module positioned above the reflector plate; be provided with black reflection gum on the reflector plate, when optical module was luminous, black reflection gum absorbed the partial light at optical module edge.

Backlight unit, wherein, black reflection gum includes that black substrate, first paste the layer and the layer is pasted to the second, first paste the layer and the second is pasted the layer and is located respectively the both sides of black substrate to paste the layer through first pasting the layer and the second with black reflection gum respectively with glue the frame with the reflector plate is connected.

And the first pasting layer and/or the second pasting layer are black pasting layers.

The backlight module is characterized in that the black reflective back glue is positioned at the lower side of the reflector plate, and the outer edge of the black reflective back glue extends out of the reflector plate and covers the outer side surface of the reflector plate.

The backlight module is characterized in that the outer edge of the black reflective back adhesive is flush with one side, facing the optical module, of the reflection sheet.

The backlight module is characterized in that the black reflective back glue is sleeved on the outer side of the reflector plate, and one side of the black reflective back glue facing the optical module is flush with one side of the reflector plate facing the optical module.

The backlight module is characterized in that the black reflective back glue is a closed back glue ring.

A terminal device, wherein the terminal device comprises the backlight module as described above.

Has the advantages that: compared with the prior art, the utility model provides a backlight module and terminal equipment, the backlight module comprises a rubber frame, a reflector plate assembled on the rubber frame, and an optical module positioned above the reflector plate; be provided with black reflection gum on the reflector plate, when optical module was luminous, black reflection gum absorbed the partial light at optical module edge. The utility model discloses a with the reflector plate through black reflection gum with it is connected to glue the frame, black reflection gum is absorbing the partial light of optical module edge like this, and then will reduce the marginal luminance all around of light-emitting zone for the marginal luminance of light-emitting zone is more even with the regional luminance in the middle of light-emitting zone, thereby reaches the effect of improving the display screen in a poor light.

Drawings

Fig. 1 is a schematic view of a backlight module according to the present invention.

Fig. 2 is a schematic diagram of the matching between the reflective sheet and the black reflective back glue in the backlight module structure according to the present invention.

Detailed Description

The utility model provides a backlight module and terminal equipment, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the embodiment is lifted to follow with reference to the attached drawing the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be further noted that the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc., indicating directions or positional relationships based on those shown in the drawings, it is only for convenience of description and simplicity of description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed in a specific direction, and operate, and therefore, the terms describing the positional relationships in the drawings are used only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the above terms according to specific situations.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The following description of the embodiments will further explain the present invention by referring to the figures.

The present embodiment provides a backlight module, as shown in fig. 1 and fig. 2, the backlight module includes a rubber frame 10, a reflective sheet 20 and an optical module 40; the reflective sheet 20 is assembled in the rubber frame 10, and the optical module 40 is located above the reflective sheet 20. The reflective sheet 20 is provided with a black reflective back adhesive 30, the reflective sheet 20 is connected to the adhesive frame 10 through the black reflective back adhesive 30, and when the optical module 40 emits light, the black reflective back adhesive 30 absorbs a part of light at the edge of the optical module 40. In the embodiment, the reflective sheet 20 is connected to the plastic frame 10 through the black reflective back adhesive 30, so that the black reflective back adhesive 30 can absorb part of the light at the edge of the optical module 40, and further reduce the brightness at the peripheral edge of the light emitting region, so that the brightness at the edge of the light emitting region and the brightness in the middle area of the light emitting region are more uniform, thereby achieving the effect of improving the backlight display picture.

Further, the black reflective back glue 30 includes a black base material, a first adhesive layer, and a second adhesive layer; the first adhesive layer is located on one side of the black base material facing the reflective sheet 20, and the black base material is connected with the reflective sheet 20 through the first adhesive layer. The second adhesive layer is positioned on one side of the black base material facing the rubber frame 10; the black base material is connected with the rubber frame 10 through the second adhesive layer, so that the reflecting sheet 20 is connected with the rubber frame 10 through the black reflecting back adhesive 30; meanwhile, the black matrix absorbs part of the light at the edge of the light emitting area of the optical module 40, so as to reduce the brightness at the edge of the light emitting area. In an implementation manner of this embodiment, the first layer of pasting and the second layer of pasting may all adopt the black layer of pasting, also may have one in the first layer of pasting and the second layer of pasting to adopt the black layer of pasting, and also may first layer of pasting and the second layer of pasting are transparent layer of pasting etc..

Further, in one implementation manner of the present embodiment, the black reflective back adhesive 30 is located on a side of the reflective sheet 20 away from the optical module 40, and is arranged along a circumferential direction of the reflective sheet 20. The black reflective back adhesive 30 is partially connected to the reflective sheet 20, and partially extends out of the reflective sheet 20 to wrap the outer side of the reflective sheet 20. It can be understood that the black reflective back glue 30 is an annular structure, the inner edge of the annular black reflective back glue 30 is located on the reflector plate 20 and connected to the reflector plate 20, and the outer edge of the annular black reflective back glue 30 extends out of the reflector plate 20 and extends towards the direction close to the optical module 40, so that the black reflective back glue 30 wraps the outer side surface of the reflector plate 20, and thus the inner edge is attached to the side of the reflector plate 20 away from the optical module 40, so that the attachment area of the black reflective back glue 30 to the reflector plate 20 and the glue frame 10 can be increased, the stability of connection between the reflector plate 20 and the glue frame 10 is improved, and the black reflective back glue 30 wrapping the outer side of the reflector plate 20 can absorb the light at the edge of the light emitting region of the optical module 40, thereby improving the uniformity of the brightness of the. In addition, the outer edge of the black reflective back glue 30 is flush with the side of the reflection sheet 20 facing the optical module 40, so that the edge of the optical module 40 is matched with the outer edge of the black reflective back glue 30, thereby not only preventing the black reflective back glue 30 from generating shadow influence on the light emitting area of the optical module 40, but also absorbing partial light at the edge of the light emitting area of the light module. It is to be noted that the distance between the inner edge of the black reflective backing adhesive 30 and the edge of the reflective sheet 20 can be determined according to practical requirements, for example, 2mm, 3mm, etc.

Further, in an implementation manner of this embodiment, the black reflective back glue 30 is sleeved on the outer edge of the reflective sheet 20, one side of the black reflective back glue 30 facing the optical module 40 is flush with one side of the reflective sheet 20 facing the optical module 40, and one side of the black reflective back glue 30 away from the optical module 40 may be flush with one side of the reflective sheet 20 away from the optical module 40. It can be understood that the black reflective back adhesive 30 is an annular structure, the inner side surface of the black reflective back adhesive 30 is connected to the outer side surface of the reflective sheet 20, the outer side surface of the black reflective back adhesive 30 is connected to the adhesive frame 10 to connect the reflective sheet 20 to the adhesive frame 10, the black reflective back adhesive 30 is located between the reflective sheet 20 and the adhesive frame 10, the optical module 40 is located above the reflective sheet 20, and light generated at the edge of the light emitting region of the optical module 40 partially irradiates the black reflective back adhesive 30 and is partially absorbed by the black reflective back adhesive 30.

Further, in an implementation manner of this embodiment, in order to improve the uniformity of the brightness of the light emitting area of the optical module 40, the black reflective back glue 30 may adopt a closed ring structure, that is, the black reflective back glue 30 is a closed back glue ring, so that the light generated at the circumferential edge of the light emitting area of the optical module 40 can be partially absorbed by the black reflective back glue 30, and the uniformity of the brightness of the circumferential edge of the light emitting area of the optical module 40 is ensured. Of course, in practical application, in order to avoid the influence of thermal expansion and cold contraction on the black reflective back glue 30, the black reflective back glue 30 is provided with a plurality of cutting seams and the like at intervals along the circumferential direction.

Further, in one implementation manner of this embodiment, the optical module 40 may include a light source 406, a light guide plate 401, a diffusion sheet 402, a lower brightness enhancement film 403, an upper brightness enhancement film 404, and a light shielding glue 405; the light emitting surface of the light source 406 is matched with the light guide plate 401; the light guide plate 401 is located on the upper side of the reflective sheet 20, the diffusion sheet 402 is located on the upper side of the light guide plate 401, the lower brightness enhancement film 403 is located on the upper side of the diffusion sheet 402, the upper brightness enhancement film 404 is located on the upper side of the lower brightness enhancement film 403, and the light shielding glue 405 is located on the upper brightness enhancement film 404 to form the optical module 40.

In summary, the present embodiment provides a backlight module and a terminal device, where the backlight module includes a plastic frame, a reflective sheet assembled on the plastic frame, and an optical module located above the reflective sheet; be provided with black reflection gum on the reflector plate, when optical module was luminous, black reflection gum absorbed the partial light at optical module edge. The utility model discloses a with the reflector plate through black reflection gum with it is connected to glue the frame, black reflection gum is absorbing the partial light of optical module edge like this, and then will reduce the marginal luminance all around of light-emitting zone for the marginal luminance of light-emitting zone is more even with the regional luminance in the middle of light-emitting zone, thereby reaches the effect of improving the display screen in a poor light.

Based on the backlight module, the embodiment further provides a terminal device, which includes the backlight module described in the above embodiment. It can be understood that the utility model provides a terminal equipment through adopting the terminal equipment in the above-mentioned embodiment, can improve the homogeneity of the luminance in the middle of display area edge and the display area.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (8)

1. A backlight module is characterized by comprising a rubber frame, a reflector plate assembled on the rubber frame, and an optical module positioned above the reflector plate; be provided with black reflection gum on the reflector plate, when optical module was luminous, black reflection gum absorbed the partial light at optical module edge.

2. The backlight module as claimed in claim 1, wherein the black reflective back adhesive comprises a black substrate, a first adhesive layer and a second adhesive layer, the first adhesive layer and the second adhesive layer are respectively disposed on two sides of the black substrate, so that the black reflective back adhesive is respectively connected to the adhesive frame and the reflective sheet through the first adhesive layer and the second adhesive layer.

3. The backlight module as claimed in claim 2, wherein the first adhesive layer and/or the second adhesive layer are black adhesive layers.

4. The backlight module as claimed in claim 1, wherein the black reflective adhesive is disposed on the lower side of the reflective sheet, and the outer edge of the black reflective adhesive extends out of the reflective sheet and covers the outer side of the reflective sheet.

5. The backlight module according to claim 4, wherein the outer edge of the black reflective adhesive is flush with the side of the reflective sheet facing the optical module.

6. The backlight module as claimed in claim 1, wherein the black reflective adhesive is disposed on an outer side of the reflective sheet, and a side of the black reflective adhesive facing the optical module is flush with a side of the reflective sheet facing the optical module.

7. The backlight module according to any of claims 1-6, wherein the black reflective adhesive is a closed adhesive ring.

8. A terminal device, characterized in that the terminal device comprises a backlight module according to any one of claims 1-7.

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