A display panel is provided that has a multilayer structure made of a colored
glass
layer having a desired shape and optical characteristics and a non-colored glass
layer having high transparency, as well as high productivity. The display panel
has a non-colored glass layer and a colored glass layer contacting the non-colored
glass layer. A multilayer structure is formed that includes a colored paste layer
and a non-colored paste layer. In the colored paste layer, crystallization glass
powder that is crystallized at the temperature TA and coloring agent are diffused.
In the non-colored paste layer, glass powder whose softening point is the temperature
TB that is higher than the temperature TA. The multilayer structure is heated to
the temperature TC that is higher than the temperature TB and is lower than the
softening point of the crystallization glass powder after the crystallization to
be burned, so that the non-colored glass layer and the colored glass layer are
formed simultaneously.
