Shading adhesive tape, backlight module and display device

Abstract

The invention discloses a shading adhesive tape, a backlight module and a display device. A first bonding region and a second bonding region are formed on the shading adhesive tape, wherein the shading adhesive tape comprises a substrate; the upper surface and lower surface of the substrate of the first bonding region are respectively provided with an adhesive layer; and the lower surface of the substrate of the second bonding region is provided with an adhesive layer. The adhesive frame does not need the double-shot molding adhesive frame, thereby lowering the manufacturing cost. The manufacturing of the adhesive frame does not need the injection molding twice, so that the backlight module with the ultranarrow adhesive frame can be applied to the display device with the ultranarrow frame. The shading adhesive tape is also attached to the side surface of the adhesive frame, thereby increasing the attachment area of the shading adhesive tape on the adhesive frame, and further lowering the shedding risk of the shading adhesive tape.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a light-shielding adhesive tape, a backlight module and a display device. Background technique [0002] With the development of science and technology, the market's requirements for backlight products are getting higher and higher, especially the development of backlight for mobile phone products is rapid. Products with ultra-thin, bright, wide viewing angle and narrow bezel mainstream. [0003] figure 1 It is a structural schematic diagram of a backlight module in the prior art, such as figure 1 As shown, the backlight module includes a light-shielding tape 1 , a light source 2 , a plastic frame 3 , a reflection sheet 4 , a light guide plate 5 and an optical film layer 6 , and the optical film layer 6 may include a diffusion sheet 61 , a lower prism 62 and an upper prism 63 . The light source 2 is located on the side of the light guide plate 5, the optical film layer 6 is lo...

AI Technical Summary

Problems solved by technology

The existing two-color injection molding process requires two injection moldings, and the two-time injection molding process cannot make an ultra-narrow plastic frame, so that the backlight module cannot be applied to a display device with an ultra-narrow bezel

[0007] 3) The light-shielding tape 3 is only attached to the upper surface of the plastic frame 3. Since the width of the upper surface of the plastic frame is small, the risk of the light-shielding tape 3 falling off is increased

Especially for ultra-narrow plastic frames, the risk of falling off is greater

Images