Patent ID: 7429412
Filing Date: 2008-09-30
Classification: C09K,G02F

Abstract:
1. A liquid crystal display device, comprising: a first substrate; a second substrate; a first alignment layer on the first substrate; a second alignment layer on the second substrate; and a liquid crystal layer between the first substrate and the second substrate, wherein the first alignment layer includes a photo-alignment layer which is irradiated with light that is non-polarized, linearly polarized, or partially polarized, at least one time in the vertical direction and/or an inclined direction, the photo-alignment layer including a cross linking agent, an additive, and a photo-initiator for reducing an image-sticking in the liquid crystal display device and for inducing photo-stability of the first alignment layer, the additive increasing the cross linking index of the photo-alignment later, and is selected from a group consisting of benzotriazols and silanes having a concentration of at least 4% but less than 8% of the solid concentration of the photo-alignment layer, and the photo-initiator having a concentration that is greater than 0% but less than or equal to 50% of the solid concentration of the additive, and is not greater than 4% of the solid concentration in the photo-alignment layer, such that ΔT of the liquid crystal display device is less than 0.03 for reducing the image-sticking, wherein ΔT=T