Abstract: An apparatus for sticking a film on a display screen includes a fixing assembly including a device fixing base and a film fixing base connected to and rotatable relative to the device fixing base; a film holder; and a roll assembly including a press roll. When the film holder is brought to the position facing the device fixing groove, the first end of the film holder is closer to the display screen than the second end; the film holder has a first surface facing the display screen and a second surface opposite to the first surface and facing the film fixing base; and the first surface is adhered with a protective film capable of being attached to the display screen of the electronic device. The press roll is configured to roll on the second surface of the film holder to apply a force on the protective film.

Abstract: Disclosed are a camera protection device and a mobile phone protection jacket. The camera protection device includes: a first sheet body having a first hole structure configured for cooperation with a camera of a mobile phone and a second hole structure configured for cooperation with a flash lamp of the mobile phone, and a light shielding structure formed integrally or separately with the first sheet body, the light shielding structure being arranged between the flash lamp and a lens protection film of the camera. The mobile phone protection jacket is provided with the camera protection device according to any implementation in the first aspect.

Abstract: Disclosed are a camera protection device and a mobile phone protection jacket. The camera protection device includes: a first sheet body having a first hole structure configured for cooperation with a camera of a mobile phone and a second hole structure configured for cooperation with a flash lamp of the mobile phone, and a light shielding structure formed integrally or separately with the first sheet body, the light shielding structure being arranged between the flash lamp and a lens protection film of the camera. The mobile phone protection jacket is provided with the camera protection device according to any implementation in the first aspect.

Abstract: A method for affixing a protective component to a liquid crystal display, specifically comprises placing a protective component on a surface of a liquid crystal display, wherein a white edge is formed between an edge of the protective component and an edge of the liquid crystal display with a curved surface; injecting solidifiable liquid glue into the white edge to fill a space of the white edge and then solidifying the liquid glue to make the edge of the protective component fit to the edge of the liquid crystal display. The white edge is eliminated in combination with solid and liquid glues, thereby improving the fit. This method can be widely applied to the field of electronic product technologies.

Abstract: A protective film for under-screen ultrasonic fingerprint identification includes a protective layer and a glue layer, and the thickness of the protective film within a fingerprint identification area is ?0.70 mm. The protective film for under-screen ultrasonic fingerprint identification has low requirements for the shape of the protective layer. As the thickness of the fingerprint identification area is uniform and stable, it is easy to unlock the smartphone, or even achieve a 100% success rate by means of the supporting points.

Abstract: A screen protector application device including a holder frame having an upper surface, a lower surface, and travel slots. A head grip protrudes from the upper surface of the holder frame at a first end. Side guides protrude from the upper surface of the holder frame along the sides. A sliding foot includes a foot grip protruding from the upper surface of the holder frame at a second end and sliding legs slidably disposed within the travel slots. At least one spring biases the sliding foot towards the head grip. The device further includes a track and an applicator. The applicator includes a handle, a roller rotatably coupled to the handle, and a slide. The slide is slidably engaged with the track such that the applicator slides along a length the holder frame with the roller disposed above the upper surface of the holder frame.