An apparatus for processing cover windows includes a first mold including a first support a second support spaced apart from the first support, where the first support and second support are configured to hold processing targets; a second mold; and a third mold spaced apart from the second mold. The second mold includes a first pressurizing portion overlapping with the first support, having a first thickness, and a second pressurizing portion connected with the first pressurizing portion and configured to overlap with the first support, having a second thickness thinner than the first thickness. The third mold includes a third pressurizing portion overlapping with the second support, having a third thickness, and a fourth pressurizing portion connected with the third pressurizing portion and overlapping with the second support, having a fourth thickness thinner than the third thickness.

Molding a Li ion conductive sulfide glass construct into a flat preform shape using a mold having a molding surface of a material that is chemically inert in direct contact with a glass blank when heated can improve molding performance.

A method of molding a window for a display device includes: forming curved side surfaces and curved corners of the window, by pressing a heated preliminary window glass to a mold. The mold includes: a flat portion corresponding to a flat display portion of the display device; a window side surface bending portion corresponding to the side surfaces of the display device; and a window corner bending portion corresponding to the corners of the display device. The forming the curved side surfaces of the window includes pressing the heated preliminary window glass against the window side surface bending portion of the mold; and after the forming of the curved side surfaces, forming the curved corners and a flat portion of the window by further pressing the heated preliminary window glass respectively against the window corner bending portion and the flat portion of the mold.

Manufacturing methods for making a substantially rectangular and flat glass preform for manufacturing a Li ion conducting glass separator can involve drawing the preform to a thin sheet and may involve one or more of slumping, rolling or casting the glass within a frame that defines a space filling region and therewith the shape and size of the preform. The thickness of the rectangular flat preform so formed may be about 2 mm or less. The frame may be slotted having a back surface and widthwise wall portion that define the height and width of the space filling region. The flat backing surface and surfaces of the widthwise wall portions are defined may be coated by a material that is inert in direct contact with the heated glass material, such as gold.

A method of molding a window for a display device includes: forming curved side surfaces and curved corners of the window, by pressing a heated preliminary window glass to a mold. The mold includes: a flat portion corresponding to a flat display portion of the display device; a window side surface bending portion corresponding to the side surfaces of the display device; and a window corner bending portion corresponding to the corners of the display device. The forming the curved side surfaces of the window includes pressing the heated preliminary window glass against the window side surface bending portion of the mold; and after the forming of the curved side surfaces, forming the curved corners and a flat portion of the window by further pressing the heated preliminary window glass respectively against the window corner bending portion and the flat portion of the mold.

A method of molding a window for a display device includes: forming curved side surfaces and curved corners of the window, by pressing a heated preliminary window glass to a mold. The mold includes: a flat portion corresponding to a flat display portion of the display device; a window side surface bending portion corresponding to the side surfaces of the display device; and a window corner bending portion corresponding to the corners of the display device. The forming the curved side surfaces of the window includes pressing the heated preliminary window glass against the window side surface bending portion of the mold; and after the forming of the curved side surfaces, forming the curved corners and a flat portion of the window by further pressing the heated preliminary window glass respectively against the window corner bending portion and the flat portion of the mold.

A molding method for a cover window includes: locally heating a peripheral portion of a glass substrate around a central portion of the glass substrate to a temperature of about 610? C. to about 670? C., forming a cover window by pressing the glass substrate, and annealing and cooling the cover window. Accordingly, a cover window in which each of edges has an outwardly convex curved surface through a glass substrate may be formed. In addition, the surface roughness of a cover window formed through a glass substrate may be improved.

According to one or more embodiments described herein, a three-dimensional laminate glass article may be manufactured by a process which may include heating a glass stack including at least two glass sheets that are unbonded with one another at a first temperature range, fusing the first glass sheet with the second glass sheet by heating the glass stack at a second temperature range, and shaping the glass stack. The first temperature range may be from about 150 C. to about 400 C. for a first period of time of at least about 5 minutes. The second temperature range may be from about 400 C. to about 1200 C.

A method of molding a window for a display device includes: forming curved side surfaces and curved corners of the window, by pressing a heated preliminary window glass to a mold. The mold includes: a flat portion corresponding to a flat display portion of the display device; a window side surface bending portion corresponding to the side surfaces of the display device; and a window corner bending portion corresponding to the corners of the display device. The forming the curved side surfaces of the window includes pressing the heated preliminary window glass against the window side surface bending portion of the mold; and after the forming of the curved side surfaces, forming the curved corners and a flat portion of the window by further pressing the heated preliminary window glass respectively against the window corner bending portion and the flat portion of the mold.

Manufacturing methods for making a substantially rectangular and flat glass preform for manufacturing a Li ion conducting glass separator can involve drawing the preform to a thin sheet and may involve one or more of slumping, rolling or casting the glass within a frame that defines a space filling region and therewith the shape and size of the preform. The thickness of the rectangular flat preform so formed may be about 2 mm or less. The frame may be slotted having a back surface and widthwise wall portion that define the height and width of the space filling region. The flat backing surface and surfaces of the widthwise wall portions are defined may be coated by a material that is inert in direct contact with the heated glass material, such as gold.