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:
Mar. 20, 2012
Filed:
Dec. 19, 2008
SE Hwan NA, Icheon-Si, KR;
Se Hwan Na, Icheon-Si, KR;
Hydis Technologies Co., Ltd., Gyeonggi-Do, KR;
Abstract
Provided is a liquid crystal display (LCD) having a touch screen function using a photoconductor, which includes first and second substrates and a liquid crystal layer filled therebetween. The first substrate includes a touch sensing layer formed under a substrate and sensing a position by variation in current or voltage due to change in characteristics of the photoconductor in response to light supplied from outside, a light shielding layer formed under the touch sensing layer and preventing leakage of light, and a color filter layer including red (R), green (G) and blue (B) color filter patterns to express a color between the light shielding layer, thereby effectively finding a touch position according to a current variation depending on a change in characteristics of the photoconductor by the light supplied from outside.