This application claims priority to Taiwan Application Serial Number 100126474, filed Jul. 26, 2011, which is herein incorporated by reference.
1. Technical Field
The present disclosure relates to a method of making rollers, and more particularly to a method of making rollers for manufacturing retarder films.
2. Description of the Related Art
A retarder film has been applied to a liquid crystal display (LCD) to generate a visual three-dimensional stereo effect. As such, the retarder film can be found in some commercial products, like stereoscopic display glasses, stereoscopic display TVs and other display products.
To the display products, it is required to ensure an optical quality of the retarder film by keeping an accuracy of manufacturing process of the retarder film. However, keeping the accuracy of manufacturing process of the retarder film reduces manufacturing speed of the retarder film. In this regard, there is still a need to provide one tool to manufacture the retarder film in keeping with the accuracy and the manufacturing speed of the retarder film.
The disclosure is to provide a manufacturing method of rollers for manufacturing retarder films.
According to an aspect of the present disclosure, a method for making a roller used for manufacturing a retarder film is provided. The method comprises the steps of: providing a roller having a roller axis and a roller surface; providing an embossing tool having an embossing end; rotating the roller along a rotation direction with respect to the roller axis and embossing the roller surface with a first depth in a first predetermined distance from a first end to a second end; removing the embossing tool from the roller surface and moving the embossing tool to the second end; embossing the roller surface with the embossing tool with a second depth in a second predetermined distance from the second end to the first end; and removing the embossing tool from the roller surface and moving the embossing tool to the first end. The embossing end has a plurality of parallel micro-groove structures.
Accordingly, the embossing end embosses the roller surface repeatedly to generate a plurality of first embossing patterns in the first depth and second embossing patterns in the second depth to cover all area of the roller surface.
According to another aspect of the present disclosure, a method for manufacturing a retarder film with micro-structures is provided. The method comprises the steps of: providing a roller having the roller axis and the roller surface; providing an embossing tool having an embossing end; rotating the roller along the rotation direction with respect to the roller axis and embossing the roller surface with a first depth in a first predetermined distance in a direction from the first end to the second end; removing the embossing tool from the roller surface and moving the embossing tool toward the second end with the first predetermined distance; rotating the roller along an opposite rotation direction with respect to the roller axis; embossing the roller surface with the embossing tool toward the second end with a second depth in the second predetermined distance; and removing the embossing tool from the roller surface and moving the embossing tool to the second end.
Accordingly, the embossing end has a plurality of parallel micro-groove structures. Accordingly, the embossing end embosses the roller surface repeatedly to generate a plurality of first embossing patterns in the first depth and second embossing patterns in the second depth to cover all area of the roller surface.
The above and other embodiments of the disclosure will become better understood with regard to the following detailed description of the preferred but non-limiting embodiment(s). The following description is made with reference to the accompanying drawings.
This specification discloses one or more embodiments that incorporate the features of present disclosure. The disclosed embodiment(s) merely exemplify the disclosure. The scope of the disclosure is not limited to the disclosed embodiment(s). The disclosure is defined by the claims appended hereto. As used herein, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise.
The embodiment(s) described, and references in the specification to “one embodiment,” “an example embodiment,” etc., indicate that the embodiment(s) described can include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is understood that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Referring now to
In step S110, the roller 100 (shown in
The roller surface 100a is a smooth and cylindrical outer surface. The smooth and cylindrical outer surface means the roller surface 100a has a uniform diameter 100d along the rotation axis 100c. That is, a distance from each point of the roller surface 100a to the rotation axis 100c is substantially the same. In one embodiment, the roller 100 is made of easily embossing and antioxidant materials, such as copper (Cu).
In step S120, an embossing tool 900 (shown in
In step S130, the roller 100 rotates along a rotation direction C11 with respect to the roller axis 100c in a rotation speed (shown in
In step S140, after embossing the plurality of first embossing patterns 111 in the first predetermined distance L11, the embossing tool 900 removes from the roller surface 100a and moves to the second end E12 of the roller surface 100a.
As shown in
In step S150, the roller 100 rotates along the rotation direction C11 with respect to the roller axis 100c in the same rotation speed (shown in
As shown in
After the embossing process finished, a liquid crystal layer 720 is disposed on the phase retardation structures 710 to form the retardation film 700. The liquid crystal layer 720 disposed on the phase retardation structures 710 can generate different phase retardation effects in different areas of the retardation film 700.
Referring now to drawings,
In step S210, the roller 200 (shown in
The roller surface 200a is a smooth and cylindrical outer surface. The smooth and cylindrical outer surface means the roller surface 200a has a uniform diameter 200d along the rotation axis 200c. That is, a distance from each point of the roller surface 200a to the rotation axis 200c is substantially the same. In one embodiment, the roller 200 is made of easily embossing and antioxidant materials, such as copper (Cu).
In step S220, the embossing tool 900 (shown in
In step S230, the roller 200 rotates along a rotation direction C21 with respect to the roller axis 200c in a rotation speed (shown in
In step S240, the embossing tool 900 removes from the roller surface 200a of the roller 200 and moves the embossing tool 900 toward the second end E22 with the first predetermined distance L21.
In step S250, the roller 200 rotates along a rotation direction C22 with respect to the roller axis 200c in a same rotation speed (shown in
In step S260, the embossing tool 900 embosses the roller surface 200a toward the second end L22 with a second depth D22 in a second predetermined distance L22. After embossing, the embossing end 910 embosses a plurality of second embossing patterns 221. The plurality of second embossing patterns 221 generate a second embossing area 220.
In step S270, the embossing tool 900 removes from the roller surface 200a of the roller 200 and moves to the second end E22.
As shown in
As shown in
In one embodiment, the depth of the first depth D11, D12 and the second depth D21, D22 are substantially the same. In other embodiments, the depth of the first depth D11, D12 and the second depth D21, D22 are substantially different.
In some embodiments, the base substrate 701 is the Polyethylene terephthalate (PET), polycarbonate (PC), triacetyl cellulose (TAO), Polymethylmethacrylate (PMMA) or cyclo-olefin polymer (COP).
The present patterned retarder films manufactured according to embodiments of the present disclosure are utilized with at least one of functional optical films selected from a group consisting of hard-coating film, low reflective film, anti-reflective film and anti-glaring film on the surface of the base film opposed to the surface for forming the alignment layer in order to provide desired additional optical functionalities.
While the disclosure has been described by way of example and in terms of the preferred embodiment(s), it is to be understood that the disclosure is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures.
Number | Date | Country | Kind |
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100126474 | Jul 2011 | TW | national |