Packaging for an optical sheet and a packaging method of the same

Abstract

An optical sheet having an adhesive layer is wrapped by a first packaging component of which the material includes a plastic base mixed with silicone. A second packaging component then wraps the first packaging component, and the second packaging component is opaque. The plastic base can be polyethylene or polyethylene terephthalate, and the weight percent of the silicone to the plastic base is less than 5, preferably less than 3.

Description

RELATED APPLICATIONS [0001] The present application is based on, and claims priority from, Taiwan Application Serial Number 93100283, filed Jan. 6, 2004, the disclosure of which is hereby incorporated by reference herein in its entirety. BACKGROUND [0002] 1. Field of Invention [0003] The present invention relates to a packaging for an optical sheet. More particularly, the present invention relates to a packaging and a method for packaging an optical sheet having an adhesive layer. [0004] 2. Description of Related Art [0005] Liquid crystal displays (LCD) have many advantages over conventional types of displays including having high display quality, having small volume, being lightweight, and having low driving voltage and low power consumption. Hence, LCDs are widely used in small portable televisions, mobile telephones, video recording units, notebook computers, desktop monitors, projector televisions and so on, and have gradually replaced the conventional cathode ray tube (CRT) as ...

AI Technical Summary

Benefits of technology

[0011] It is therefore an objective of the present invention to provide a packaging for an optical sheet, in which a packaging containing silicone is used to wrap or bag the optical sheet, to prevent an adhesive layer of the optical sheet from being rubbed and brought out by the packaging and also to decrease the quantity of the packaging components to decrease the material cost and packaging time.

[0012] It is another objective of the present invention to provide a method for packaging an optical sheet, of which the steps are reduced, to enhance the yields of the packaging process, decrease the packaging effort and cost, and facilitate automation.

[0015] The first packaging component is selected from a group consisting of a packaging bag, a packaging paper, a packaging box and a packaging case. The second packaging component is an aluminum bag or other opaque packaging component, such as a packaging bag or box. Moreover, when several optical sheets are wrapped by the first packaging components, spacers can be added between the optical sheets and the first packaging components, to prevent damage on the surfaces of the optical sheets. In addition, in one preferred embodiment, an anti-static material is mixed into the first packaging component, to prevent damage from the generation of static electricity between the first packaging component and the optical sheet.

[0016] The invention uses the packaging essentially having two packaging components to replace the conventional packaging having at least three packaging components, thus decreasing the manufacturing cost and enhancing the manufacturing efficiency and yields. The first packaging component, which is used to wrap the optical sheet, comprises silicone so as to make the surfaces thereof smoother, and the sandwiched adhesive layer of the optical sheet is therefore not brought out while touching the first packaging component. Furthermore, the steps of the packaging method are easy and without any delicate manipulating, thereby enhancing the manufacturing yields, decreasing the effort and cost of manufacturing, and easily facilitating automation.

Problems solved by technology

However, the polarizers are delicate optical sheets, which are very easily damaged by touch and easily contaminated by dust in the air.

If the polarizer is only packaged by a common packaging, without any special packaging or packaging method, the sandwiched adhesive layer may be rubbed and brought out by the common packaging, and thus contaminate the surface of the polarizer.

However, the release films 112 and 114 are expensive because the surfaces thereof have to be given some special treatments to prevent them from bringing out the adhesive layer.

These give rise to the possibility of making mistakes, and increase the burden of material, effort and time.

In addition, the complex packaging is not easily automated, and the polarizer manufacturer thus has difficulty enhancing manufacturing efficiency and yields.

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