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:
May. 28, 2013
Filed:
Jul. 14, 2010
Cheol-se Kim, Daegu, KR;
Ji-hyun Jung, Gumi-si, KR;
Min-jae Lee, Seoul, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
Disclosed is a liquid crystal display device to realize soft touch and sense touch regardless of illumination of external light or reflected light. The liquid crystal display device includes a liquid crystal panel including a first substrate and a second substrate facing each other, wherein a liquid crystal layer is interposed between the first substrate and the second substrate, an infrared sensor arranged on the first substrate, an infrared filter arranged corresponding to the infrared sensor arranged on the second substrate facing the first substrate, a first polarizing plate adhered to the back surface of the first substrate, a second polarizing plate adhered to the back surface of the second substrate, a light guiding plate arranged under the first polarizing plate, a first light source arranged on one side of the light guiding plate to emit white light, and a second light source arranged on the other side of the light guiding plate to emit infrared light to the light guiding plate.