Method of forming a glass article and the glass article formed thereby

Abstract

A method of forming a glass article includes providing a first glass sheet. The first glass sheet is heated to a temperature suitable for shaping. The first glass sheet is deposited on a first bending tool. An edge portion of the first glass sheet is disposed over a shaping surface of the first bending tool. The shaping surface of the first bending tool is configured to provide in the first glass sheet a compression area and a tension area. The first glass sheet is shaped on the first bending tool and the compression area is formed in the edge portion of the first glass sheet. The compression area includes a first portion and a second portion. The first portion has a width which is greater than a width of a second portion.

1 . A glass article, comprising:
 a first glass sheet comprising a compression area and a tension area formed in the first glass sheet, wherein the compression area exhibits a compressive area stress of 20-100 MPa and is formed in an edge portion of the first glass sheet, the compression area comprising a first portion and a second portion, the first portion having a width (W 1 ) which is greater than a width (W 2 ) of a second portion.   
     
     
         2 . The glass article of  claim 1 , wherein the tension area is formed in a second portion of the first glass sheet, the second portion of the first glass sheet is located inward of the edge portion of the first glass sheet, and a transition is formed in the first glass sheet in a third portion of the first glass sheet. 
     
     
         3 . The glass article of  claim 1 , further comprising a first terminal connector positioned over the first portion of the compression area and in mechanical communication with the first glass sheet. 
     
     
         4 . The glass article of  claim 1 , wherein a transition in the first glass sheet is inward of a first terminal connector in mechanical communication with the first glass sheet. 
     
     
         5 . The glass article of  claim 1 , wherein the edge portion of the first glass sheet comprises a first edge portion and a second edge portion, the first portion of the compression area being formed in the first edge portion and the second portion of the compression area being formed in the second edge portion. 
     
     
         6 . The glass article of  claim 1 , wherein a transition in the first glass sheet comprises a first portion, the first portion extending from the edge portion of the first glass sheet, a second portion provided in a parallel relationship with the first portion, the second portion extending from the edge portion of the first glass sheet, and a third portion connecting the first portion to the second portion. 
     
     
         7 . The glass article of  claim 1 , wherein the edge portion of the first glass sheet comprises a first edge portion, the first portion of the compression area and the second portion of the compression area being formed in the first edge portion. 
     
     
         8 . The glass article of  claim 1 , wherein a transition in the first glass sheet exhibits an area stress of 0 MPa and the tension area exhibits a tensile area stress of less than 8 MPa. 
     
     
         9 . The glass article of  claim 1 , further comprising a polymeric interlayer provided between the first glass sheet and a second glass sheet; or wherein the first glass sheet is shaped. 
     
     
         10 . The glass article of  claim 4 , further comprising a second terminal connector which is in a spaced apart relationship with the first terminal connector; or wherein the first terminal connector is in a spaced apart and parallel relationship with a portion of a peripheral edge of the first glass sheet. 
     
     
         11 . The glass article of  claim 5 , wherein the first portion of the compression area is in a spaced apart relationship with the second portion of the compression area. 
     
     
         12 . The glass article of  claim 5 , wherein the first portion of the compression area is adjacent the second portion of the compression area. 
     
     
         13 . The glass article of  claim 5 , wherein the first portion of the compression area extends from a peripheral edge of the first glass sheet to the second portion of the compression area. 
     
     
         14 . The glass article of  claim 5 , wherein a transition from the first portion of the compression area to the second portion of the compression area is sharply defined. 
     
     
         15 . The glass article of  claim 5 , wherein a transition in the first glass sheet comprises a curved portion. 
     
     
         16 . The glass article of  claim 5 , wherein a transition in the first glass sheet comprises a linear portion. 
     
     
         17 . The glass article of  claim 6 , wherein the third portion is provided in a perpendicular relationship with the first portion and the second portion. 
     
     
         18 . The glass article of  claim 7 , wherein the width (W 1 ) of the first portion gradually increases in a direction toward a first end of the first portion. 
     
     
         19 . The glass article of  claim 1 , wherein the first glass sheet is shaped and the shaped first glass sheet is flat or bent. 
     
     
         20 . The glass article of  claim 1 , wherein in the first glass sheet a transition is located between the compression area and the tension area.