Transfer roller with adjustable vacuum adsorption force and method for attaching thin film by using transfer roller

Abstract

The invention provides a transfer roller with adjustable vacuum adsorption force and a method for attaching a thin film by using the transfer roller. The transfer roller comprises a roller body (20) and a plurality of regulation devices (40) arranged on the roller body (20), wherein a plurality of air suction pipelines (22) are uniformly distributed in the roller body (20), and are used for sucking air through air extractors; each regulation device (40) comprises a valve (42) arranged on the corresponding air suction pipeline (22), piezoelectric ceramics (44) connected to the corresponding valve (42) and a control circuit (46) electrically connected to the corresponding piezoelectric ceramics (44); the control circuits (46) are used for controlling the magnitude of electric fields input into the piezoelectric ceramics (44); the piezoelectric ceramics (44) are deformed under the action of the electric fields; the valves (42) are inserted into or pulled out of the air suction pipelines (22) under the deformation action of the piezoelectric ceramics (44) to control the magnitude of air suction intensity of the air suction pipelines (22) to further control the magnitude of the vacuum adsorption force of the air suction pipelines (22).

Description

technical field [0001] The present invention relates to a transfer roller with adjustable vacuum adsorption force, in particular to a transfer roller with adjustable vacuum adsorption force and a film attachment method using the transfer roller. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or laptop screens wait. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a housing, a liquid crystal display panel disposed in the housing, and a backlight module disposed in the housing. The structure of a traditional liquid crystal display panel is composed of a color filter substrate (Color Filter), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), an...

AI Technical Summary

Problems solved by technology

Specifically, the transfer roller absorbs the 3D film through a special adhesive layer, and then presses and attaches the 3D film to the substrate. However, since the special adhesive layer has a certain service life, it is necessary to Regular replacement, and because the viscosity of the sticky special adhesive layer cannot be controlled, in order to ensure that the 3D film can be effectively pressed and attached to the substrate, the pressure applied by the transfer roller to the substrate needs to be set at When the viscosity of the special adhesive layer is the highest, it can effectively ensure the pressure of the 3D film attachment effect, but this makes the substrate need to withstand a greater pressure, and when the substrate is thin (especially when the thickness of the substrate is less than or equal to 0.5mm), this pressure may cause the risk of substrate fracture

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