Attaching method and device for polarizers

Abstract

The invention provides an attaching method and device for polarizers. The equipment comprises a backlight source, a liquid crystal box fixing unit, a polarizer adjusting unit, a detection unit and a control unit. When the polarizer attaching device works, the backlight source is electrified and a liquid crystal box is electrified to output detection images. The polarizer adjusting unit drives the polarizers to rotate around the central shafts of surfaces of the polarizers at the pre-set interval angles. The detection unit detects detection images of the polarizers at the current rotary position and transmits the detection images to the control unit. The contrast ratios are calculated according to the detection images of the polarizers at the current rotary position by the control unit. When the contrast ratios of the polarizers at the current rotary position are less than those of the detection images of the polarizers at the former rotary position, a judgment is made that polarization angles of the polarizers at the former rotary position highly coincide with the polarization angle of the liquid crystal box so that the attachment positions of polarizers at the current rotary position are determined. The attached products possess high contrast performance.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method and equipment for attaching a polarizer. Background technique [0002] With the development of display technology, Thin Film Transistor Liquid Crystal Display (abbreviated as TFT-LCD) has been widely used due to its superior performances such as high quality and low power consumption. Polarizer is an important component in the structure of TFT-LCD, and its function is to realize the polarization of natural light. In the TFT-LCD manufacturing process, the attachment of polarizers has become an important process. [0003] With the existing polarizer attachment equipment, the attachment accuracy is mainly determined according to the distance between the shape of the polarizer and the edge of the liquid crystal cell. Since this bonding method does not match the actual polarization axis of the polarizer with the polarization axis of the liquid crystal cell, nor does it tak...

AI Technical Summary

Problems solved by technology

Since this bonding method does not match the actual polarization axis of the polarizer with the polarization axis of the liquid crystal cell, nor does it take into account the influence of the manufacturing process and cutting accuracy on the polarization axis during the production of the polarizer, even if the edge of the polarizer is aligned with the The design mark is aligned and attached, and the polarization angle of the actual liquid crystal cell and the polarization angle of the polarizer are not completely consistent, resulting in that the optical characteristics of the product after the polarizer is attached cannot reach the design value, and the contrast performance of the product is poor.

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