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:
Jul. 05, 2016
Filed:
May. 31, 2013
Jiangsu Hecheng Display Technology Co. Ltd., Jiangsu, CN;
Haibin Xu, Jiangsu, CN;
Yudong Tan, Jiangsu, CN;
Zhaoyuan Chen, Jiangsu, CN;
Feng Wu, Jiangsu, CN;
Xiaofei She, Jiangsu, CN;
Da Huang, Jiangsu, CN;
Xiangfei Kong, Jiangsu, CN;
Xiaolong Song, Jiangsu, CN;
Shizhi You, Jiangsu, CN;
Jiangsu Hecheng Display Technology Co. Ltd., Jiangsu, CN;
Abstract
A dichromatic dye composition which has the characteristics of higher order parameter and good miscibility can be applied in a guest-host liquid crystal composition. The absorbance curve of a guest-host liquid crystal composition with the dichromatic dye composition within the range of 420-680 nm has the following characteristics: a. 2≦(T1+T2)/ΔT≦10; b. |T1−T2|≦0.5; c. 0<ΔT≦0.2, where Tis a difference between a transmittance to light at 420 nm and a minimum transmittance, Tis a difference between the transmittance at a wavelength of 680 nm and a minimum transmittance, and ΔT is a difference between the maximum and minimum transmittances on the transmittance curve within the wavelength range of 420-680 nm. A liquid crystal element with the guest-host liquid crystal composition provides a high-contrast display. A liquid crystal display device has the guest-host liquid crystal composition with the dichromatic dye composition.