The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8734608 B1

PDF
Full Text
Expired
Date of Patent:
May. 27, 2014

Filed:

Jul. 18, 2012
Applicant:

Gi Suk Sung, Seongnam-si, KR;

Inventor:

Gi Suk Sung, Seongnam-si, KR;

Assignees:

On-Nuri Electronics Inc., Seoul, unknown;

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 65/48 (2006.01);
U.S. Cl.
CPC ...
Abstract

A diffuser-integrated prism sheet is provided, in which diffuser layers are provided on the upper and lower surfaces of the prism sheet and prism-shaped protrusions are formed in the prism sheet. The prism sheet for backlight units includes a lower diffuser layer having a light diffusion structure, a lower layer formed on the lower diffuser layer, a first intermediate layer formed on the lower layer and having prism-shaped protrusions formed parallel to each other, a second intermediate layer formed on the first intermediate layer, an upper layer formed on the second intermediate layer, and an upper diffuser layer formed on the upper layer and having a light diffusion structure, wherein an air layer is formed between the lower surface of the second intermediate layer and the valleys of the prism-shaped protrusions of the first intermediate layer. Also, a method of manufacturing the diffuser-integrated prism sheet is provided.


Find Patent Forward Citations

Sung, Gi. (2014). Diffuser-integrated prism sheet for backlight units and method of manufacturing the same (U.S. Patent No. 8734608). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8734608

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