Novel backlight source with single-sided adhesive black strip attached to lower surface of diffusion light source end

Abstract

The utility model relates to a novel backlight source with a single-sided adhesive black strip attached to the lower surface of a diffusion light source end, which comprises a shading adhesive layer, an upper brightness enhancement film, a lower brightness enhancement film, a diffusion film, a light guide plate, a reflector plate and a plastic iron frame, and the upper brightness enhancement film, the lower brightness enhancement film, the diffusion film, the light guide plate and the reflector plate are sequentially arranged in the plastic iron frame from top to bottom. The diffusion film is provided with a plastic iron frame, the plastic iron frame is provided with a shading adhesive layer, the lower edge of the upper surface of the diffusion film is provided with an upper-layer single-sided adhesive black strip, and one side, corresponding to the LED light bar, of the lower surface of the diffusion film is bonded with a lower-layer single-sided adhesive black strip. The upper-layer single-sided adhesive black strip and the lower-layer single-sided adhesive black strip simultaneously absorb a light source, so that the problems of a lamp socket bright band, lamp eyes and the like of the backlight source are effectively solved, and the quality of the backlight source is improved.

Description

Technical Field

[0001] This utility model relates to the field of backlights, and more particularly to a novel backlight with a single-sided adhesive black strip attached to the lower surface of the diffuse light source. Background Technology

[0002] With the development of mobile phone technology, new short-light source mobile phones are becoming more and more common. The backlight production process is more difficult than that of general backlights, and the problems of light bands and light holes have not been completely improved.

[0003] Currently, mobile phone backlights typically use a plastic frame or a combination of plastic and metal as the frame. A light-shielding film is adhered to the frame; one side is used to attach and fix the optical film, and the other side is used to attach the LCD screen. A touchscreen or glass cover is then attached to the screen, and the touchscreen or glass cover is attached to the phone's casing. Because the width of the light-shielding adhesive used to adhere the brightness enhancement film and diffusion film at the backlight nozzle is too narrow, it easily causes bright bands and "lamp eye" phenomena at the nozzle. Utility Model Content

[0004] To solve the above problems, this utility model provides a novel backlight with a single-sided adhesive black strip attached to the lower surface of the diffuse light source.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The present invention relates to a novel backlight source with a single-sided adhesive black strip attached to the lower surface of the diffuser light source, comprising a light-shielding adhesive layer, an upper brightness enhancement film, a lower brightness enhancement film, a diffuser film, a light guide plate, a reflector sheet, and a glue frame. The upper brightness enhancement film, the lower brightness enhancement film, the diffuser film, the light guide plate, and the reflector sheet are arranged sequentially from top to bottom within the glue frame. The glue frame is provided with a light-shielding adhesive layer. The lower edge of the upper surface of the diffuser film is provided with an upper single-sided adhesive black strip. The lower surface of the diffuser film is adhered to the side corresponding to the LED light strip.

[0006] Preferably, the lower edge of the diffusion film has a protrusion, and the upper single-sided adhesive black strip and the lower single-sided adhesive black strip are respectively disposed on the upper surface and the lower surface of the protrusion.

[0007] Preferably, an LED light strip is provided on the lower side of the light guide plate, and when the diffusion film and the light guide plate are set inside the glued iron frame, the upper single-sided adhesive black strip and the lower single-sided adhesive black strip are located inside the LED light strip.

[0008] Preferably, the light-shielding adhesive layer extends into a folded ear portion on one side corresponding to the LED light strip, and the folded ear portion is provided with a wire-passing avoidance hole.

[0009] The beneficial effects of this utility model are as follows: By adding a lower layer of single-sided adhesive black strip to the lower surface of the diffusion film, the upper and lower single-sided adhesive black strips absorb the light source simultaneously, which more effectively improves the problems of bright bands and lamp eyes in the backlight, thereby improving the quality of the backlight. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the disassembled structure of this utility model.

[0011] Figure 2 This is a utility model Figure 1 A schematic diagram of the structure of the black stripe layer and the diffusion film at point A.

[0012] Figure 3 This is a partial cross-sectional schematic diagram of the present invention.

[0013] Figure 4 This is a schematic diagram of Embodiment 2 of this utility model.

[0014] Figure 5 This is a schematic diagram of the structure of the light-shielding adhesive layer in Example 2.

[0015] Figure 6 This is a partial cross-sectional schematic diagram of Example 2.

[0016] Figure Labels

[0017] 1. Light-shielding adhesive layer; 11. Folded ear part; 111. Threading avoidance hole; 2. Upper light enhancement film; 3. Lower light enhancement film; 4. Diffuser film; 41. Protrusion part; 5. LED light strip; 51. Connecting wire; 6. Light guide plate; 7. Reflective sheet; 8. Upper single-sided adhesive black strip; 9. Lower single-sided adhesive black strip; 10. Adhesive frame. Detailed Implementation

[0018] Example 1:

[0019] Please see Figure 1-3 As shown, this utility model relates to a novel backlight source with a single-sided adhesive black strip attached to the lower surface of the diffuser light source. It includes a light-shielding adhesive layer 1, an upper brightness enhancement film 2, a lower brightness enhancement film 3, a diffuser film 4, a light guide plate 6, a reflector 7, and a glued frame 10. The upper brightness enhancement film 2, lower brightness enhancement film 3, diffuser film 4, light guide plate 6, and reflector 7 are arranged sequentially from top to bottom within the glued frame 10. An LED strip 5 is adhered to one side of the top surface of the light guide plate 6 and one side of the bottom surface of the diffuser film 4. The LED strip 5 is connected to the circuit board built into the mobile phone, allowing the LED strip 5 to illuminate the light-emitting unit on the light guide plate 6. This allows the light from the light guide plate 6, in conjunction with the reflector 7, to display an image. The glued frame 10 has a light-shielding adhesive layer 1. An upper single-sided adhesive black strip 8 is adhered to the upper surface of the diffuser film 4, and a lower single-sided adhesive black strip 9 is adhered to the lower surface of the diffuser film 4 on the side corresponding to the LED strip 5. The lower single-sided adhesive black strip 9 is placed on the lower surface of the diffusion film 4 on the side corresponding to the LED light strip 5. This achieves the best effect, absorbing more than 90% of the light. It can reduce the light emitted by the LED light strip 5 from being exposed, effectively improve the phenomenon of bright bands at the backlight opening, and improve the overall quality of the backlight.

[0020] Preferably, the lower single-sided adhesive black strip 9 is attached to the lower surface of the diffusion film 4 by means of bonding.

[0021] Preferably, the lower edge of the diffusion film 4 is provided with a protrusion 41, and the upper single-sided adhesive black strip 8 and the lower single-sided adhesive black strip 9 are respectively disposed on the upper surface and the lower surface of the protrusion 41.

[0022] In this utility model, an LED light strip 5 is provided on the lower side of the light guide plate 6. The LED light strip 5 emits a light source. When the diffusion film 4 and the light guide plate 6 are placed inside the glued iron frame 10, the light source shines in the direction of the upper single-sided adhesive black strip 8 and the lower single-sided adhesive black strip 9.

[0023] Example 2:

[0024] Please see Figure 4-6 As shown, in this utility model, preferably, the light-shielding adhesive layer 1 extends into a folded ear portion 11 on one side corresponding to the LED light strip 5. The folded ear portion 11 is provided with a wire-passing clearance hole 111, which matches the position of the connecting wire 51. Part of the light-shielding adhesive layer 1 is bonded to the top surface of the upper light-enhancing film 2, and part of the light-shielding adhesive layer 1 is bonded to the metal frame 10. The folded ear portion 11 is bent to wrap around the lower edge and lower surface of the metal frame 10. After the light-shielding adhesive layer 1 is bonded, the wire-passing clearance hole 111 allows the connecting wire 51 to be smoothly connected to the power supply. Through the action of the light-shielding adhesive layer 1, light leakage can be prevented from occurring around the backlight, and the visual appearance of the backlight can be improved. In addition, the design of the folded ear portion 11 minimizes the area bonded to the upper light-enhancing film 2, resulting in a narrower black border for the backlight, thereby expanding the display area of ​​the backlight.

[0025] This invention adds a lower single-sided adhesive black strip 9 to the lower surface of the diffusion film 4. By having both the upper and lower single-sided adhesive black strips 8 and 9 absorb light simultaneously, it more effectively improves issues such as bright bands and lamp eyes in the backlight, thereby enhancing the quality of the backlight. The light-shielding adhesive layer 1 extends into a folded ear 11 on one side corresponding to the LED light strip 5, further preventing light leakage around the backlight and improving its appearance.

[0026] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A novel backlight source with a single-sided adhesive black strip attached to the lower surface of the diffuser light source, comprising a light-shielding adhesive layer, an upper brightness enhancement film, a lower brightness enhancement film, a diffuser film, a light guide plate, a reflector, and an adhesive frame, wherein the upper brightness enhancement film, the lower brightness enhancement film, the diffuser film, the light guide plate, and the reflector are arranged sequentially from top to bottom within the adhesive frame, and the adhesive frame is provided with a light-shielding adhesive layer, characterized in that: The upper surface of the diffusion film has an upper single-sided adhesive black strip on the lower edge, and the lower surface of the diffusion film has a lower single-sided adhesive black strip attached to the side corresponding to the LED light strip.

2. The novel backlight source with a single-sided adhesive black strip attached to the lower surface of the diffuse light source end according to claim 1, characterized in that: The diffusion film has a protrusion at its lower edge, and the upper single-sided adhesive black strip and the lower single-sided adhesive black strip are respectively disposed on the upper and lower surfaces of the protrusion.

3. A novel backlight source with a single-sided adhesive black strip attached to the lower surface of the diffuse light source end according to claim 1, characterized in that: The light guide plate has an LED light strip at its lower edge. When the diffusion film and the light guide plate are set inside the glued iron frame, the upper single-sided adhesive black strip and the lower single-sided adhesive black strip are located inside the LED light strip.

4. A novel backlight source with a single-sided adhesive black strip attached to the lower surface of the diffuse light source end according to claim 2, characterized in that: The light-shielding adhesive layer extends into a folded ear portion on one side corresponding to the LED light strip, and the folded ear portion is provided with a wire-passing avoidance hole.

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