The present disclosure relates to a manufacturing method of display panels. The method includes providing at least two glass substrate having a predetermined dimension, configuring the glass substrate to be spaced apart from a supporting substrate, configuring a bonding area on the glass substrate, conducting a cell-formation process or a package process of the display panel, and stripping the supporting substrate. In this way, the thicker supporting substrate is configured to support the glass substrate so as to avoid two ends of the thinner glass substrate from dropping and curing, which enhances the convenience and the precision of the manufacturing process of the display panel.