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:
Mar. 14, 1995
Filed:
Apr. 16, 1993
Vishwa N Shukla, North Attleboro, MA (US);
Allan J Siuzdak, Cumberland, RI (US);
Stanley J Lukasiewicz, Rumford, RI (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An array of raised lands disposed in columns and rows formed of ceramic material, particularly barium strontium titanate, is formed by making a die of resist material having a negative image pattern of the array on a ceramic substrate and then forming a slurry having a high solid content of the ceramic material, filling the pattern with the slurry and firing the filled die to produce a sintered array of pixels. In a modified embodiment a pressing pad 18 of deformable ceramic tape is formed and pressed into the die after the die has been filled with slurry 16 in order to compact the material and wipe the ceramic material from the sidewalls 12. In another embodiment a ceramic tape of the type used for the pressing pad is pressed into the die and after a short time removed from the die with the pixel array formed in the tape which is then fired to sinter the array. In a modification of this embodiment that portion of the tape extending out of the die beyond the sidewalls 12 can be removed and the die then fired to form a pixel array which is confined essentially to vertical shrinkage upon firing.