Light-emitting diode (LED) module for improving bright edge of light-emitting side

Abstract

The utility model provides an LED (Light Emitting Diode) module for improving a bright edge of a light-emitting side, which comprises a back plate, a light-emitting module, a light-emitting module and a light-emitting module, wherein the back plate comprises a bottom plate and a side plate; the reflective film is connected to the back plate, a light absorption part is arranged in the area, close to the side plate, of the reflective film, and the light absorption part is tightly attached to the side plate; the light guide plate is connected to the reflective film; and the optical film materials are connected to the light guide plate. The LED module is simple in structure, light entering the light guide plate can be absorbed by the light absorption part at the tail end through the arrangement of the light absorption part, and therefore the problem of the bright edge of the light outlet side of the LED module can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of LED modules, in particular to an LED module with improved bright edges on the light-emitting side. Background Art

[0002] With the continuous development of science and technology, the electronic product market has developed well, and more and more people are paying attention to the display manufacturing industry. The backlight module is a light source located behind the liquid crystal display. The liquid crystal display itself does not emit light, and it uses the backlight to display graphics and text. The traditional dust-proof display backlight module can basically meet people's usage needs, but there are still some display problems. The specific problems are as follows:

[0003] At present, the mainstream backlight source lighting principle is still the light guide plate plus light strip method. The point light source of LED is converted into a surface light source through the light guide plate dots, V-cut and other microstructures. This method will cause obvious light gathering at the edge of the light guide plate, thus forming a bright edge, which is particularly obvious on the light output side. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides an LED module with improved bright edge on the light-emitting side. The LED module has a simple structure and can effectively improve the problem of bright edge on the light-emitting side of the LED module.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: an LED module with improved bright edge on the light-emitting side, comprising:

[0006] A back panel, comprising a bottom panel and side panels, with a plastic frame fixed to the back panel;

[0007] A reflective film is connected to the back plate, and a light absorbing portion is provided in an area of the reflective film close to the plastic frame, and the light absorbing portion is in close contact with the plastic frame;

[0008] A light guide plate connected to the reflective film;

[0009] A multilayer optical film material, wherein the optical film material is connected to the light guide plate;

[0010] Gaps are reserved between the reflective film, the light guide plate, the optical film material and the plastic frame.

[0011] Furthermore, the light absorbing portion is made of grey or black tape.

[0012] Furthermore, there is a gap between the reflective film and the plastic frame, and the light absorbing part is pasted in the gap.

[0013] Furthermore, the width of the light absorbing portion is 0.5-0.9 mm.

[0014] Furthermore, the top of the light absorbing portion has an adhesive layer.

[0015] Furthermore, the thickness of the light absorbing portion is flush with that of the reflective film.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The LED module has a simple structure. Through the setting of the light absorbing part, the light entering the light guide plate can be absorbed by the light absorbing part at the end, so it can effectively improve the problem of bright edge on the light emitting side of the LED module and improve the user experience;

[0018] 2. The light-absorbing part uses gray or black tape, which has better light-absorbing effect, is convenient for quick bonding, and has lower cost;

[0019] 3. Since there is an adhesive layer on the top of the light absorbing part, it is convenient to stick the light guide plate on the adhesive layer, making the light guide plate more stable and without displacement, thus ensuring the quality of the LED module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 For the utility model Figure 1 Schematic diagram of the structure;

[0022] Figure 3 For the utility model Figure 2 Enlarged view of part A;

[0023] In the figure: 1. Back panel; 2. Bottom panel; 3. Side panel; 4. Reflective film; 5. Optical film; 6. Light absorbing part; 7. Gap; 8. Adhesive layer; 9. Light guide plate; 10. Plastic frame; DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 3 An LED module with improved bright edge on the light-emitting side is shown, comprising:

[0026] Back panel 1, comprising a bottom panel 2 and side panels 3, with a plastic frame 10 fixed to the back panel;

[0027] A reflective film 4 is connected to the back plate 1 , and a light absorbing portion is provided in the area of the reflective film 4 close to the plastic frame 10 , and the light absorbing portion is in close contact with the plastic frame 10 ;

[0028] A light guide plate 9 connected to the reflective film 4;

[0029] A multilayer optical film 5 connected to a light guide plate 9;

[0030] A gap is reserved between the reflective film 4 , the light guide plate 9 , the optical film material 5 and the plastic frame 10 , and the gap is 0.7-0.9 mm.

[0031] During assembly, the reflective film 4 is first connected to the back panel 1, then the light guide plate 9 is connected to the reflective film 4, and finally the optical film 5 is laid on the light guide plate 9. Since the reflective film 4 is provided with a light absorbing portion in the area near the side panel 3, when the LED light on the side of the light guide plate 9 emits light and passes through the light guide plate 9, it can be absorbed by the light absorbing portion. After being absorbed by the light absorbing portion, the bright edge of the light output side of the LED module can be effectively improved. In order to prevent the reflective film 4, the light guide plate 9, the optical film 5 and the plastic frame 10 from being squeezed against each other due to thermal expansion and contraction when the temperature rises, gaps are reserved between the reflective film 4, the light guide plate 9, the optical film 5 and the plastic frame 10.

[0032] Furthermore, the light absorbing portion is made of gray or black tape. Specifically, the light absorbing portion of the present invention is made of gray or black tape, which has a better light absorbing effect and is relatively low in cost.

[0033] Furthermore, a gap is provided between the reflective film 4 and the plastic frame 10, and the light absorbing portion is attached to the gap. Specifically, a gap is pre-set between the reflective film 4 and the plastic frame 10, and the light absorbing portion is attached directly to the gap. Specifically, the width of the light absorbing portion is 0.5-0.9 mm. If the width of the light absorbing portion is too wide, the brightness of the light-emitting side will be significantly reduced. If the width of the light absorbing portion is too narrow, the bright edge problem on the light-emitting side will reappear. After multiple tests, the width of the light absorbing portion is found to be in the range of 0.5-0.9 mm, which is more reasonable.

[0034] Furthermore, the top of the light absorbing portion has an adhesive layer 8. By providing the adhesive layer 8 on the top of the light absorbing portion, the light guide plate 9 can be firmly connected to the top of the light absorbing portion, playing the role of fixing the light absorbing portion and preventing the light guide plate 9 from moving under force, thereby improving the poor backlight bright edge.

[0035] Furthermore, the thickness of the light absorbing portion is flush with the reflective film 4. Specifically, since the thickness of the light absorbing portion is flush with the reflective film 4, the flatness and aesthetics of the module are ensured, while the light guide plate can normally contact the light absorbing portion for adhesion.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An LED module with improved bright edge on the light-emitting side, characterized in that: include: A back panel, comprising a bottom panel and side panels, with a plastic frame fixed to the back panel; A reflective film is connected to the back plate, and a light absorbing portion is provided in an area of the reflective film close to the plastic frame, and the light absorbing portion is in close contact with the plastic frame; A light guide plate connected to the reflective film; A multilayer optical film material, wherein the optical film material is connected to the light guide plate; Gaps are reserved between the reflective film, the light guide plate, the optical film material and the plastic frame.

2. The LED module with improved bright edge on the light-emitting side according to claim 1, characterized in that: The light absorbing portion is made of grey or black tape.

3. The LED module with improved bright edge on the light-emitting side according to claim 2, characterized in that: There is a gap between the reflective film and the plastic frame, and the light absorbing part is pasted in the gap.

4. The LED module with improved bright edge on the light-emitting side according to claim 3, characterized in that: The width of the light absorbing portion is 0.5-0.9 mm.

5. The LED module with improved bright edge on the light-emitting side according to claim 4, characterized in that: The top of the light absorbing part is provided with an adhesive layer.

6. The LED module with improved bright edge on the light-emitting side according to claim 5, characterized in that: The thickness of the light absorbing portion is flush with that of the light reflecting film.

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