Anti-peeping film, manufacturing method thereof, backlight module, and display device

Abstract

The invention discloses an anti-peeping film, a manufacturing method thereof, a backlight module, and a display device, which relate to the field of display technology and are used to realize all-round anti-peeping of the display device. The anti-peeping film includes a substrate, the light incident surface of the substrate is provided with a reflective layer, the reflective layer is provided with at least one light-transmitting hole; the light-emitting surface of the substrate is provided with a microlens array; each of the transparent The light holes are respectively corresponding to at least one microlens in the microlens array; the microlens is used to control the exit direction of the light emitted from the light exit surface of the substrate; or, the microlens is used to control The outgoing direction of the light emitted from the light emitting surface of the substrate is deflected toward the axial direction of the microlens. The anti-peeping film, the manufacturing method thereof, the backlight module and the display device provided by the invention are used in the liquid crystal display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a privacy film and a manufacturing method thereof, a backlight module, and a display device. Background technique [0002] The visible area of ​​the anti-peeping film is limited, so that when the display device using it is displayed, the information displayed on the display screen in the display device can be read exclusively by the user, and cannot be seen by other people beside the user, that is, Others can only see the pitch-black display, thereby effectively protecting the user's commercial secrets and / or personal privacy. [0003] The traditional anti-peeping film adopts an ultra-fine louver structure. Generally, a number of parallel first resin strips are arranged on the substrate, and a second resin strip is arranged between every two adjacent first resin strips; wherein, the first resin strips The strips serve as transmission units, the second resin strips serve as abso...

AI Technical Summary

Problems solved by technology

[0004] However, each second resin strip in the anti-peeping film is used as an absorbing unit, although it can absorb the light entering its interior, it can partially block each light passing through the anti-peeping film, thereby effectively limiting the visible area of ​​the anti-peeping film and realizing anti-spying. The anti-peeping function of the privacy film; however, using the second resin strips to absorb light may also easily cause the light transmittance of the anti-peeping film to be low, reducing the outgoing light intensity of the backlight module where the anti-peeping film is located, and affecting the privacy of the anti-peeping film. The display effect of the display device is adversely affected

Moreover, the second resin strips and the first resin strips are staggered and arranged side by side, so that the anti-peeping film can only prevent peeping in the plane perpendicular to the direction of each resin strip, that is to say, the anti-peeping film can only be in one plane. For anti-peeping, it is impossible to realize the all-round anti-peeping of the anti-peeping film

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