Display panel and display device

A display panel, wherein the display panel comprises an active area and a border-frame area located at a periphery of the active area, the active area comprises a plurality of sub-pixels and a plurality of data lines connected to the sub-pixels, and the border-frame area comprises a testing area and a bonding area;

• the testing area comprises a plurality of testing units that are arranged periodically in a first direction, each of the testing units comprises one or more switching transistors, a first electrode of each of the switching transistors is connected to a testing-signal lead wire. the testing-signal lead wire is configured to transmit a testing signal, and a second electrode of the switching transistor is connected to one of the data lines;
• the bonding area comprises a plurality of bonding units that are arranged periodically in the first direction, each of the bonding units comprises one or more bonding pads, and each of the bonding pads is connected to one of the data lines;
• and
• in the first direction, a ratio of a quantity of the switching transistors comprised in one arrangement period of the testing units to a quantity of the bonding pads comprised in one arrangement period of the bonding units is greater than 0 and less than 2.