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:
Nov. 12, 2013
Filed:
Sep. 26, 2008
Min Ho Sohn, Gyeonggi-do, KR;
Jong Seong Choi, Gyeonggi-do, KR;
Hyung Uk Jang, Gyeonggi-do, KR;
Sang Rae Lee, Gyeongsangbuk-do, KR;
Sang Hyuck Bae, Seoul, KR;
Byung Chun Yu, Gyeonggi-do, KR;
Min Ho Sohn, Gyeonggi-do, KR;
Jong Seong Choi, Gyeonggi-do, KR;
Hyung Uk Jang, Gyeonggi-do, KR;
Sang Rae Lee, Gyeongsangbuk-do, KR;
Sang Hyuck Bae, Seoul, KR;
Byung Chun Yu, Gyeonggi-do, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
A touch panel display device includes a liquid crystal panel to display an image by regulating transmittance of light supplied from a back light unit, and a touch sensing part provided on upper edges of the liquid crystal panel in order to detect a position touched by a user or an object. The touch sensing part includes infrared lamps to generate and emit infrared light, infrared light reflecting tubes mounted with the infrared lamps, and image sensors to sense the infrared light output from the light output regions of the infrared light reflecting tubes. Each of the infrared light reflecting tubes has light output regions and non-output regions evenly formed at a surface facing an upper surface of the liquid crystal panel so that the infrared light emitted from the infrared lamps is evenly irradiated on the upper surface of the liquid crystal panel.