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:
Apr. 29, 2008
Filed:
Nov. 12, 2003
Seung-woo Lee, Seoul, KR;
Yun-ju Yu, Seoul, KR;
Doo-sik Park, Suwon, KR;
Jong-seon Kim, Pyeongtaek, KR;
Heui-keun Choh, Seoul, KR;
Chang-yeong Kim, Yongin, KR;
Seung-Woo Lee, Seoul, KR;
Yun-Ju Yu, Seoul, KR;
Doo-Sik Park, Suwon, KR;
Jong-Seon Kim, Pyeongtaek, KR;
Heui-Keun Choh, Seoul, KR;
Chang-Yeong Kim, Yongin, KR;
Abstract
A liquid crystal display includes a signal controller having a luminance controller receiving image data from an external graphic source and controlling the luminance of the image data such that the luminance at the gray expressed by a specific data value of the image data is established to be 80 cd/m, and a gamma converter outputting image data each having a gamma characteristic adapted to a gamma 2.2 curve. The gamma converter output is determined without using a look up table based on at least one difference curve having a linear portion, a quartic portion, and a critical value where the liner portion and the quartic portion intersect. The liquid crystal display further includes a data driver receiving the image data for selecting and outputting gray voltages corresponding to the image data, and an inverter controlling a lamp to emit light with a luminance of 80 cd/mor more.