Backlight module

Abstract

The utility model provides a backlight module which comprises a back plate, a backlight source structure and a plastic structural part, the backlight source structure and the plastic structural part are arranged in the back plate, the plastic structural part is located on the side portion of the backlight source structure, and one end of the plastic structural part is bent and extends to form a side branch portion. The side branch part and the plastic structural part are combined to form an L-shaped structure, the side branch part is located above the edge of the backlight source structure, and quantum dot excitation layers are arranged on the side wall, facing the backlight source structure, of the side branch part and the side wall, facing the backlight source structure, of the plastic structural part correspondingly. The quantum dot excitation layer is used for exciting blue light of the backlight source structure to form composite white light. According to the backlight module, the problems that blue light is exposed from the periphery of the backlight source structure and the edge of a quantum dot film in the backlight source structure loses efficacy, so that the blue edge of the backlight module is poor are solved, and the display effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, in particular to a backlight module. Background Art

[0002] Backlight is a light source behind the LCD, and its luminous effect will directly affect the visual effect of the LCD module (LCM). The liquid crystal itself does not emit light, and the graphics or characters it displays are the result of its modulation of light.

[0003] At present, the backlight source of the backlight module of the existing Mini LED display products is generally a blue light source, and a quantum film is set in the backlight module to achieve a high color gamut display effect. However, since the quantum dot film cannot completely wrap the light board, the blue light will leak out from the four sides of the light board. The overall picture appears as uniform white light in the middle and blue halos on the four sides, affecting the display effect. In addition, the quantum dot film is not resistant to water and oxygen aging, which leads to failure of the edge of the film material, and then causes poor blue edges of the backlight module. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a backlight module to solve the deficiencies in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides a backlight module, including a backplane, a backlight source structure arranged in the backplane, and a plastic structural member, wherein the plastic structural member is located on the side of the backlight source structure, one end of the plastic structural member is bent and extended to form a branch portion, the branch portion and the plastic structural member are combined to form an L-shaped structure, the branch portion is located above the edge of the backlight source structure, and the side walls of the branch portion and the plastic structural member facing the backlight source structure are both provided with a quantum dot excitation layer, and the quantum dot excitation layer is used to excite the blue light of the backlight source structure to form a composite white light.

[0006] The beneficial effect of the utility model is as follows: by arranging the plastic structural member on the side of the backlight source structure, bending and extending one end of the plastic structural member to form a branch portion, arranging the branch portion above the edge of the backlight source structure, and then arranging a quantum dot excitation layer on the side wall of the branch portion and the plastic structural member facing the backlight source structure, so as to utilize the quantum dot excitation layer to excite the blue light emitted by the backlight source structure to form a composite white light, thereby avoiding the problem of poor blue edge of the backlight module caused by the blue light leaking out from the surroundings of the backlight source structure and the edge failure of the quantum dot film in the backlight source structure, which is beneficial to improving the display effect.

[0007] Preferably, a clamping portion is provided on the plastic structural member, the clamping portion and the branch portion are respectively located on two opposite sides of the plastic structural member, a clamping groove is provided on the inner wall of the back plate, and the clamping portion is clamped with the clamping groove.

[0008] Preferably, the cross-section of the clamping portion is a right trapezoidal structure, and the cross-section of the side branch portion is a rectangular structure.

[0009] Preferably, a gap is formed between the backlight structure and the plastic structural member, and the quantum dot excitation layer is located in the gap.

[0010] Preferably, a receiving groove is formed on the back plate, and both the backlight structure and the plastic structural member are located in the receiving groove.

[0011] Preferably, the backlight structure includes a lamp board and a quantum dot film. The side branch portion, the quantum dot film, and the lamp board are stacked in sequence, and the lamp board is connected to the bottom of the receiving groove.

[0012] Preferably, the backlight module further includes an optical module, and the optical module is located above the backlight structure.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0014] Figure 1 It is a cross-sectional view of the backlight module provided by the first embodiment of the present invention;

[0015] Figure 2 It is a schematic diagram of the refraction route of the blue light emitted from the side of the lamp board provided by the first embodiment of the present invention;

[0016] Figure 3 It is a schematic diagram of the refraction route of the blue light emitted from the side of the lamp board passing through the failure area of the quantum dot film provided by the first embodiment of the present invention.

[0017] Main Element Symbol Explanation:

[0018] 10. Back plate; 20. Lamp board; 21. Quantum dot film; 22. Failure area; 30. Plastic structural member; 31. Quantum dot excitation layer; 32. Side branch portion; 33. Clamping portion; 40. Optical module.

[0019] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0020] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] Please refer to Figure 1 , which is the backlight module in the first embodiment of the present utility model, including a back plate 10, a backlight structure and a plastic structural member 30.

[0024] Wherein: a receiving groove is formed on the back plate 10, the backlight structure and the plastic structural member 30 are both located in the receiving groove, and the backlight structure is connected to the bottom of the receiving groove. The plastic structural member 30 is located on the side of the backlight structure, and the plastic structural member 30 is connected to the groove wall of the receiving groove. One end of the plastic structural member 30 is bent and extended to form a side branch portion 32, so that the side branch portion 32 and the plastic structural member 30 are combined to form an L-shaped structure. The side branch portion 32 is located above the edge of the backlight structure. Quantum dot excitation layers 31 are provided on the side walls of the side branch portion 32 and the plastic structural member 30 facing the backlight structure. The quantum dot excitation layer 31 is used to excite the blue light emitted by the backlight structure to form composite white light. A gap is left between the backlight structure and the plastic structural member 30, and the quantum dot excitation layer 31 is located in the gap.

[0025] It should be noted that the backlight structure includes a lamp board 20 and a quantum dot film 21. The side branch portion 32, the quantum dot film 21 and the lamp board 20 are stacked in sequence. The lamp board 20 is connected to the bottom of the receiving groove. It can be understood that the side branch portion 32 is located above the edge of the quantum dot film 21 of the backlight structure, as Figure 2As shown, when blue light escapes from the side of the lamp board 20, the blue light is emitted towards the plastic structural member 30 and refracted through the plastic structural member 30 to emit a blue halo at the edge of the backlight module. Since a quantum dot excitation layer 31 is sprayed on the plastic structural member 30, the received blue light is excited by the quantum dot excitation layer 31 to form composite white light and then refracted out to solve the problem of the blue halo existing at the edge of the backlight module; As Figure 3 shown, when the edge of the quantum dot film 21 on the lamp board 20 fails, the blue light escaping from the edge of the lamp board 20 passes through the failure area 22 at the edge of the quantum dot film 21 and shoots onto the quantum dot excitation layer 31 on the side branch part, and is excited by the quantum dot excitation layer 31 to form composite white light and then refracted out, effectively solving the problem of the blue edge defect of the backlight module caused by the failure of the edge of the quantum dot film 21, which is not only beneficial to improving the display effect, but also beneficial to improving the service life of the backlight module.

[0026] In this embodiment, a quantum dot paste is attached to the quantum dot excitation layer 31, and the quantum dot excitation layer 31 excites blue light through the quantum dot paste to form composite white light. It should be noted that the quantum dot paste is composed of several quantum dots and a water and oxygen barrier composite material.

[0027] In this embodiment, a clamping part is provided on the plastic structural member 30. The clamping part 33 and the side branch part 32 are respectively located on opposite sides of the plastic structural member 30. A clamping groove is formed on the inner wall of the back plate 10, and the clamping part 33 is clamped with the clamping groove to limit the plastic structural member 30 and the side branch part 32. It should be noted that the cross-section of the clamping part 33 is a right trapezoid structure, and the cross-section of the side branch part 32 is a rectangular structure.

[0028] In this embodiment, the backlight module further includes an optical module 40, and the optical module 40 is located above the backlight source structure.

[0029] In specific implementation, by arranging the plastic structural member 30 on the side of the backlight source structure, bending and extending one end of the plastic structural member 30 to form a side branch part 32, arranging the side branch part 32 above the edge of the backlight source structure, and then setting a quantum dot excitation layer 31 on the side walls of the side branch part 32 and the plastic structural member 30 facing the backlight source structure, so as to use the quantum dot excitation layer 31 to excite the blue light emitted by the backlight source structure to form composite white light, avoiding the blue light leaking from the four sides of the backlight source structure and the edge failure of the quantum dot film 21 in the backlight source structure, resulting in the problem of the blue edge defect of the backlight module, which is beneficial to improving the display effect.

[0030] It should be noted that the above implementation process is only to illustrate the feasibility of the present application, but this does not mean that the backlight module of the present application has only the above-mentioned unique implementation process. On the contrary, as long as the backlight module of the present application can be implemented, it can be included in the feasible implementation solutions of the present application.

[0031] The mini LED in the second embodiment of the present utility model includes the backlight module in the first embodiment.

[0032] It should be noted that the backlight module provided in the second embodiment of the present utility model has the same implementation principle and some technical effects as those in the first embodiment. For the sake of brief description, for the parts not mentioned in this embodiment, reference may be made to the corresponding content in the first embodiment.

[0033] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above-described embodiments merely represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A backlight module, characterized in that, It includes a backplane, a backlight structure disposed in the backplane, and a plastic structural member. The plastic structural member is located at the side of the backlight structure. One end of the plastic structural member is bent and extended to form a side branch portion. The side branch portion and the plastic structural member are combined to form an L-shaped structure. The side branch portion is located above the edge of the backlight structure. Quantum dot excitation layers are provided on the side walls of the side branch portion and the plastic structural member facing the backlight structure. The quantum dot excitation layer is used to excite the blue light of the backlight structure to form composite white light.

2. The backlight module according to claim 1, characterized in that, A clamping portion is provided on the plastic structural member. The clamping portion and the side branch portion are respectively located on opposite sides of the plastic structural member. A clamping groove is formed on the inner wall of the backplane. The clamping portion is clamped with the clamping groove.

3. The backlight module according to claim 2, characterized in that, The cross-section of the clamping portion is a right trapezoidal structure, and the cross-section of the side branch portion is a rectangular structure.

4. The backlight module according to claim 1, characterized in that, A gap is formed between the backlight structure and the plastic structural member, and the quantum dot excitation layer is located in the gap.

5. The backlight module according to claim 1, characterized in that A receiving groove is formed on the backplane, and the backlight structure and the plastic structural member are both located in the receiving groove.

6. The backlight module according to claim 5, wherein The backlight structure includes a lamp board and a quantum dot film. The side branch portion, the quantum dot film, and the lamp board are stacked in sequence. The lamp board is connected to the bottom of the receiving groove.

7. The backlight module according to claim 1, wherein The backlight module further includes an optical module, and the optical module is located above the backlight structure.

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