Display substrate and display device thereof

A display substrate comprising:

• a first substrate comprising a first region and a second region;
• a second substrate located on the first region of the first substrate, the second substrate comprising a display region and a bonding region;
• an electrically conductive component located on at least one of the second region of the first substrate and the bonding region of the second substrate;
• and
• a sealing component located on the second region of the first substrate and on the bonding region of the second substrate, and configured to seal the electrically conductive component,
• the sealing component comprising a center portion and an peripheral portion at least partially surrounding the center portion,
• wherein the center portion has a thermal expansion coefficient closer to a thermal expansion coefficient of the electrically conductive component than the peripheral portion, and
• wherein an orthogonal projection of the peripheral portion of the sealing component on the first substrate is separated from an orthogonal projection of the electrically conductive component on the first substrate.