Sticking Film, A Film-Sticking Tool And A Film-Sticking Assembly

What is this patent about?

’487 is related to the field of applying protective films to electronic device screens, specifically addressing the issue of dust contamination during the application process. The background involves the widespread use of tempered glass films to protect screens, but existing methods of cleaning the screen prior to application, such as wiping with a cloth, can cause scratches due to trapped dust particles. This patent aims to improve the screen cleaning process during film application.

The underlying idea behind ’487 is to integrate electrostatic dust removal into the film application process. Instead of relying solely on manual wiping, the release liner of the tempered glass film is designed to generate static electricity when peeled away. This static charge attracts and captures dust particles from the screen surface immediately before the tempered glass is applied, minimizing the risk of scratches and improving adhesion.

The claims of ’487 focus on a sticking film comprising a tempered film and a release film layer, where the release film layer is an electrostatic layer. The key element is the generation of static electricity when the release film is separated from the tempered film, which attracts dust on the screen. The claims further specify that the sticking film includes a pulling portion that, when pulled, causes the release film layer to contact the screen and attract dust.

In practice, the invention works by utilizing a specially treated release film, likely made of a material like PET, that readily generates static charge upon separation. As the user peels away the release liner using the pulling portion, the static electricity attracts loose dust particles. The pulling portion ensures that the release film makes contact with the screen during removal, maximizing the electrostatic cleaning effect before the tempered glass film is applied. This process can be further enhanced by using a film-sticking tool to aid in alignment and controlled application.

The differentiation from prior approaches lies in the integration of electrostatic cleaning directly into the film application process. Traditional methods rely on separate cleaning steps, which can be ineffective or even detrimental if not performed carefully. By making the release liner an active cleaning element, ’487 offers a more convenient and reliable way to prepare the screen surface, reducing the likelihood of trapped dust and improving the overall quality and longevity of the screen protector application. The pulling portion also provides a more convenient way to remove the release film layer.