Novel backlight source for improving front bright band and yellowing of light source

Abstract

The utility model relates to a novel backlight source for improving the front bright band and yellowing of a light source, which comprises a shading glue 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, the plastic iron frame is a shell with an upward opening, 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 shading glue layer is arranged on the upper surface outline of the plastic iron frame and covers the upper brightness enhancement film located on the uppermost layer, a light source is arranged at the lower end of the light guide plate, the side, close to the light source, of the light guide plate is a light inlet side, the light inlet side is provided with a light inlet rack, and the light inlet rack is formed by sorting a plurality of light inlet sawteeth in a concave-convex mode.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic product backlight source production, in particular to a new backlight source with improved front bright band and yellowing. Background Art

[0002] With the development of mobile phone technology, new short-light-path mobile phones are becoming more and more common. The production process of backlight sources is more difficult than that of general backlight sources, and the problems of bright bands and yellowing at the lamp mouth have not been completely improved.

[0003] At present, the backlight of mobile phones usually uses a plastic frame or a plastic-plastic and iron frame. A light-shielding film is pasted on the frame. One side is used to paste and fix the optical film material, and the other side is pasted with the LCD screen. The touch screen or glass cover is pasted on the display screen, and the touch screen or glass cover is pasted on the mobile phone shell. Because the light-emitting surface of the backlight LED is too close to the visible area, it is easy to cause the lamp mouth to have bright bands and yellowing. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a new backlight source which improves the bright band and yellowing in front of the light source.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the utility model relates to a new type of backlight source that improves the bright band and yellowing in front of the light source, including a light-shielding adhesive layer, an upper light-enhancing film, a lower light-enhancing film, a diffusion film, a light guide plate, a reflective sheet and an adhesive iron frame, wherein the adhesive iron frame is a shell with an opening facing upward, and the upper light-enhancing film, the lower light-enhancing film, the diffusion film, the light guide plate and the reflective sheet are arranged in the adhesive iron frame from top to bottom, and the light-shielding adhesive layer is arranged on the upper surface contour of the adhesive iron frame, and the light-shielding adhesive layer covers the upper light-enhancing film located on the uppermost layer, and a light source is arranged at the lower end of the light guide plate, and the side of the light guide plate close to the light source is a light incident edge, and the light incident edge has a light incident rack, and the light incident rack is formed by a plurality of light incident sawtooth concave-convex arrangements.

[0006] Preferably, the light source is an LED light bar, and the light incident rack is arranged parallel to the LED light bar.

[0007] In order to better improve the problem of bright band and yellowing in front of the light source, preferably, the light incident sawtooth has a tooth-shaped appearance.

[0008] Preferably, the sawtooth width W of the light incident sawtooth is 2um-100um.

[0009] Preferably, the sawtooth depth H of the light incident sawtooth is 0.5um-10um.

[0010] Preferably, the sawtooth angle R of the light incident sawtooth is 90-150 degrees.

[0011] The beneficial effect of the utility model is that the utility model designs a plurality of saw teeth on the light incident edge of the light guide plate, adjusts the saw tooth width W of each light incident saw tooth to 2um-100um, adjusts the saw tooth depth / height H to 0.5um-10um, and adjusts the saw tooth angle R to 90-150 degrees, thereby effectively improving the problems of bright band and yellowing in front of the lamp, and improving the quality of the backlight source as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded schematic diagram of the backlight source of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the light guide plate of the utility model.

[0014] Figure 3 It is a structural schematic diagram of the reflective surface of the light guide plate of the utility model.

[0015] Figure 4 It is a structural schematic diagram of the light emitting surface of the light guide plate of the utility model.

[0016] Figure 5 This utility model Figure 4 Enlarged view of point A.

[0017] Reference numerals

[0018] 1. Light-shielding adhesive layer; 2. Upper light-enhancing film; 3. Lower light-enhancing film; 4. Diffusion film; 5. Light guide plate; 51. Light-emitting surface; 52. Reflection surface; 521. Reflection dots; 53. Light-entering rack; 531. Light-entering sawtooth; 6. Reflection sheet; 7. Glue-iron frame; 8. LED light strip. DETAILED DESCRIPTION

[0019] See also Figure 1-5 As shown, the utility model is about a new type of backlight source for improving the bright band and yellowing in front of the light source, the new type of backlight source comprises a light-shielding adhesive layer 1, an upper light-enhancing film 2, a lower light-enhancing film 3, a diffusion film 4, a light guide plate 5, a reflective sheet 6 and an adhesive iron frame 7, the adhesive iron frame 7 is a shell with an opening facing upward, the upper light-enhancing film 2, the lower light-enhancing film 3, the diffusion film 4, the light guide plate 5 and the reflective sheet 6 are arranged in the adhesive iron frame 7 from top to bottom, the light-shielding adhesive layer 1 is arranged along the upper surface contour of the adhesive iron frame 7, the light-shielding adhesive layer 1 covers the upper light-enhancing film 2 located on the uppermost layer, and plays a role in fixing.

[0020] In this embodiment, the light guide plate 5 includes a light emitting surface 51 and a reflective surface 52. One side of the light guide plate 5 is the light emitting surface 51, and the other side of the light guide plate 5 is the reflective surface 52. A plurality of reflective dots 521 are provided on the reflective surface 52. The reflective dots 521 have a three-dimensional convex structure. The shape of the reflective dots 521 can be any one or more graphic combinations of a circle, an ellipse, and a diamond. The reflective dots 521 can be arranged in a regular or irregular arrangement. The reflective dots 521 have a reflective focusing effect.

[0021] Among them, an LED light bar 8 is provided on one side below the light guide plate 5, and the LED light bar 8 emits a light source. The side of the light guide plate 5 close to the LED light bar 8 is a light incident side, and the other sides of the light guide plate 5 are non-light incident sides. The light incident side of the light guide plate 5 has a light incident rack 53, and the light incident rack 53 is arranged parallel to the LED light bar 8. The light incident rack 53 is composed of a plurality of light incident saw teeth 531 arranged in a concave and convex manner, and each of the light incident saw teeth 531 has the same shape and size, so that the height or depth of the crest and trough of the light incident saw teeth 531 are consistent. In order to better improve the problem of bright bands and yellowing in front of the light source, in this embodiment, the light incident saw teeth 531 have a tooth-shaped appearance, such as Figure 5 As shown, the sawtooth width W of the light incident sawtooth 531 is 2um-100um, the sawtooth depth / height H is 0.5um-10um, the sawtooth angle R is 90-150 degrees, and the parameters of the light incident sawtooth 531 can be set according to the actual ratio of the light guide plate 5 and the LED light strip 8.

[0022] The utility model mainly adjusts the design parameters of the light incident sawtooth 531, adjusts the sawtooth width W of each light incident sawtooth 531 to 2um-100um, adjusts the sawtooth depth / height H to 0.5um-10um, and adjusts the sawtooth angle R to 90-150 degrees, thereby effectively improving the problems of bright bands and yellowing in front of the lamp, and improving the overall quality of the backlight source.

[0023] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A new type of backlight source for improving the bright band and yellowing in front of the light source, comprising a light-shielding adhesive layer, an upper light-enhancing film, a lower light-enhancing film, a diffusion film, a light guide plate, a reflective sheet and an adhesive iron frame, wherein the adhesive iron frame is a shell with an opening facing upward, wherein the upper light-enhancing film, the lower light-enhancing film, the diffusion film, the light guide plate and the reflective sheet are arranged in the adhesive iron frame from top to bottom, wherein the light-shielding adhesive layer is arranged on the upper surface contour of the adhesive iron frame, wherein the light-shielding adhesive layer covers the upper light-enhancing film located at the uppermost layer, wherein a light source is arranged at the lower end of the light guide plate, and wherein: The side of the light guide plate close to the light source is a light incident side, and the light incident side has a light incident rack, and the light incident rack is formed by a plurality of light incident sawtooth concave-convex arrangements.

2. A new backlight source for improving the bright band and yellowing of the light source according to claim 1, characterized in that: The light source is an LED light bar, and the light incident rack is arranged parallel to the LED light bar.

3. A new backlight source for improving the bright band and yellowing of the light source according to claim 1, characterized in that: The light incident sawtooth has a tooth shape.

4. A new backlight source for improving the bright band and yellowing of the light source according to claim 3, characterized in that: The sawtooth width W of the incident light sawtooth is 2um-100um.

5. The novel backlight source for improving the bright band and yellowing of the light source according to claim 3, characterized in that: The sawtooth depth H of the light incident sawtooth is 0.5um-10um.

6. The novel backlight source for improving the bright band and yellowing of the light source according to claim 3, characterized in that: The sawtooth angle R of the incident light sawtooth is 90-150 degrees.

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