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:
Jun. 10, 2014
Filed:
Jun. 14, 2010
Takeyuki Ashida, Osaka, JP;
Yasuhiko Sugihara, Osaka, JP;
Takeyuki Ashida, Osaka, JP;
Yasuhiko Sugihara, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Abstract
The present invention provides a liquid crystal display device exhibiting an excellent gray scale inversion characteristic in a state where a color close to black is displayed. The present invention is a liquid crystal display device including a first polarizer, a second polarizer disposed to face the first polarizer, a liquid crystal display panel provided between the first polarizer and the second polarizer, and a first phase plate and a second phase plate provided between the first or second polarizer and the liquid crystal display panel. In the liquid crystal display device, the liquid crystal display panel has a pair of substrates disposed to face each other and a liquid crystal layer sandwiched between the pair of substrates, the liquid crystal layer includes a homogeneously aligned liquid crystal molecule, the first phase plate includes a liquid crystal film, the liquid crystal film is formed by being set in a state where a nematic liquid crystal is hybrid-aligned, and a specific phase difference as a phase difference in a perpendicular direction of a member which is present between the first and second polarizers, excluding the liquid crystal layer and the first phase plate, is 120 nm or more.