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:
Jan. 07, 2014
Filed:
Dec. 23, 2008
In-ho Ahn, Ansan, KR;
Dae-san Lim, Anyang, KR;
Jong-seong Choi, Anyang, KR;
Hyung-uk Jang, Goyang, KR;
Sang-rae Lee, Gyeonglu, KR;
Sang-hyuck Bae, Seoul, KR;
Byung-chun Yu, Paju, KR;
In-Ho Ahn, Ansan, KR;
Dae-San Lim, Anyang, KR;
Jong-Seong Choi, Anyang, KR;
Hyung-Uk Jang, Goyang, KR;
Sang-Rae Lee, Gyeonglu, KR;
Sang-Hyuck Bae, Seoul, KR;
Byung-Chun Yu, Paju, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
There are provided a liquid crystal display (LCD) to which infrared rays (IR) light sources are applied and a multi-touch system using the same. The LCD to which IR light sources are applied includes a back light in which a plurality of lamp light sources and a plurality of IR light sources are repeatedly arranged in column and row directions, a diffusion plate and a plurality of optical sheets arranged on the back light, and an LCD panel provided on the back light to display an image using light incident from the back light.