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:
Oct. 06, 2009
Filed:
Jun. 19, 2006
Dong-hae Suh, Daegu, KR;
Young IL Park, Seoul, KR;
Hee Cheol Kim, Seoul, KR;
Hwan Su Shim, Kyoungki-do, KR;
Won Geon Lee, Seoul, KR;
Dong-Hae Suh, Daegu, KR;
Young Il Park, Seoul, KR;
Hee Cheol Kim, Seoul, KR;
Hwan Su Shim, Kyoungki-do, KR;
Won Geon Lee, Seoul, KR;
Hydis Technologies Co., Ltd., Gyeonggi-do, KR;
Abstract
The present invention relates to a liquid crystal display, which comprises: a lower substrate having a reflective electrode; a lower alignment film formed on the lower substrate; an upper substrate having a color filter and disposed opposite to the lower substrate; an upper alignment film formed on the upper substrate; a liquid crystal layer sandwiched between the lower and upper substrates; a phase compensation film adhered on the outer surface of the upper substrate and serving to convert linearly polarized light into circularly polarized light; and a polarizer adhered on the phase compensation film and serving to convert natural light into linearly polarized light. The lower alignment film has an alignment angle of −10 to 20° with respect to a horizontal line, the upper alignment film has an alignment angle of 40 to 55° with respect to a horizontal line, the liquid crystal layer has a phase delay value (dΔn) of 0.24-0.27 μm, the phase compensation film has a phase compensation function of λ/4 and also has an optical axis making 140-146° with a horizontal line, and the polarizer has a absorption axis making 120 to 122.5° with a horizontal line. According to the present invention, the design of a liquid crystal cell can be optimized to provide a liquid crystal display having excellent display characteristics. Furthermore, cell gap can be increased to improve process margin.