Liquid crystal display device having column spacers and protrusions
View Patent ↗A liquid crystal display (LCD) device is provided. The LCD includes first and second substrates facing each other; a plurality of protrusions formed on the first substrate; a plurality of column spacers formed on the second substrate to correspond to the protrusions; and a liquid crystal disposed between the first and second substrates. The plurality of column spacers have a contact density with the protrusions in the range of 170 ppm or less with respect to a surface area of the first substrate.
1. An LCD device, comprising:
first and second substrates facing each other;
a plurality of protrusions formed on the first substrate;
a plurality of column spacers formed on the second substrate to respectively correspond to the protrusions and made of a material having an elastic recovery rate of at least 75% for relieving waviness in one of the first substrate and the second substrate, wherein an opposing surface area of each of the protrusions is smaller than that of a corresponding column spacer and wherein the plurality of column spacers has a contact density with the plurality of protrusions between about 60 ppm and about 170 ppm with respect to a surface area of the first substrate; and
a liquid crystal disposed between the first and second substrates,
wherein the elastic recovery rate is defined as ‘recovery displacement when decompressing from 5 gf to 0 gf’ divided by ‘shortened displacement when pressing from 0 gf to 5 gf’.
2. The LCD device as claimed in claim 1 , wherein the first substrate includes a thin film transistor array, and wherein the second substrate is provided with a color filter array.