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.:
Date of Patent:
Sep. 27, 2011
Filed:
Nov. 13, 2007
Hyeon Jin Shin, Suwon-si, KR;
Jae Young Choi, Suwon-si, KR;
Dong Kee Yi, Seoul, KR;
Seong Jae Choi, Seoul, KR;
Seonmi Yoon, Yongin-si, KR;
Hyeon Jin Shin, Suwon-si, KR;
Jae Young Choi, Suwon-si, KR;
Dong Kee Yi, Seoul, KR;
Seong Jae Choi, Seoul, KR;
Seonmi Yoon, Yongin-si, KR;
Abstract
Disclosed herein is an image display device having a plurality of light emitting diodes (LEDs), which can maintain a primary color which is desired to be expressed, and prevent an interference of other unwanted colors and a change of the primary color at the time of application of a light source of each light emitting diode. The image display device comprises: a first optical filter layer containing a violet wavelength-absorbing material having a wavelength range of from 380 nm to 450 nm such as BiOso as to prevent light having a wavelength ranging from 380 nm to 450 nm from being leaked out to an undesired region of an image display portion of the image display device; and a second optical filter layer such as a blue color filter layer so as to allow a white light to be expressed in a desired region of the image display portion.