LED backlight source for double-curved surface mobile phone

Abstract

The invention discloses an LED backlight source for a double-curved surface mobile phone. The LED backlight source comprises a light guiding plate, a diffusion membrane, upper light addition, lower light addition, light shielding rubber, a reflection membrane, a lamp port white bar, a DOB lamp bar and rubber iron. The diffusion membrane, the lower light addition, the upper light addition and the light shielding rubber are successively arranged on the light guiding plate. The reflection membrane is arranged under the light guiding plate. After the light guiding plate, the diffusion membrane, the lower light addition, the upper light addition, the light shielding rubber and the reflection membrane are subjected to press fit and then are installed in the rubber iron. According to the invention, by additional arranging a novel coupling structure and a free curved-surface reflection cover on the light entering face of the light guiding plate, a shadow phenomenon of the backlight source is completely overcome and uniformity of the backlight source is improved; by designing a mutually-crossed V-CUT structure and an R-CUT structure with a gradually changed profile in a curved surface region, incidence light is refracted through the curved surface, so light conduction directions are changed and consistency of light emission of the curved surface and the plane is achieved; the size and the depth of dots are designed in a gradually changed manner according to the radian of the curved surface, and the dots are processed through laser, so a high-brightness and high-uniformity LED backlight source is obtained.

Description

technical field [0001] The invention relates to the technical field of LED backlight sources, in particular to an LED backlight source for hyperboloid mobile phones. Background technique [0002] Samsung's mobile phone with a curved screen can be said to be quite eye-catching, and many domestic manufacturers can't help but want to try such a product. According to fast technology news, Samsung Galaxy S6 Edge and Galaxy S6 Edge+ are leading the industry with their unique hyperboloid three-screen design. Samsung itself does not hesitate to suppress the Galaxy Note 5 in order to promote it. However, when the hyperbolic screen increases the screen-to-body ratio, how to solve the shadow phenomenon of the backlight, improve the uniformity of the backlight, and achieve the consistency of the curved surface and the plane light emission is an urgent problem that needs to be solved now. Contents of the invention [0003] The purpose of the present invention is to overcome the defici...

AI Technical Summary

Problems solved by technology

However, when the hyperboloid screen increases the screen-to-body ratio, how to solve the shadow phenomenon of the backlight, improve the uniformity of the backlight, and achieve the consistency of the curved surface and the plane light emission is an urgent problem to be solved now.

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