Patent Number: 6,166,797

Title: Diffusion barrier layers with microstructured spacing members for liquid crystal display panel substrates

Abstract: Substrate elements for making liquid crystal display devices are disclosed as well as display devices using such elements. A substrate element includes a base sheet having the desired optical properties and providing the structural stability for the substrate element. The substrate element further includes a microstructured barrier layer that protects the base sheet from adverse chemical reactions with the liquid crystal or alignment layer solvents. The microstructured barrier layer comprises a plurality of microstructured spacing members that provide precise, uniform spacing between the first substrate element and a second substrate element. A pair of substrate elements, at least one of which having a microstructured barrier layer, can thereby be mated to form a display device. The substrate elements of the present invention allow large area, high resolution displays to be fabricated which will provide uniform display properties throughout the display area.

Inventors: Bruzzone; Charles L. (St. Paul, MN), Pokorny; Richard J. (St. Paul, MN), Thomas; Patrick A. (St. Paul, MN), Aastuen; David J. W. (St. Paul, MN), Gardner; Timothy J. (St. Paul, MN), Padiyath; Raghunath (St. Paul, MN)

Assignee: 3M Innovative Properties Company

International Classification: G02F 1/13 (20060101); G02F 1/1339 (20060101); G02F 1/1333 (20060101); G02F 001/1339 ()

Expiration Date: 12/26/2017