diff --git a/server/backend/internal/store/store.go b/server/backend/internal/store/store.go
index a1fb64a..879a142 100644
--- a/server/backend/internal/store/store.go
+++ b/server/backend/internal/store/store.go
@@ -328,6 +328,20 @@ func (s *ScreenStore) UpsertDisplayState(ctx context.Context, screenID, displayS
 	return err
 }
 
+// GetDisplayState gibt den zuletzt gemeldeten Display-Zustand zurück.
+// Gibt "unknown" zurück wenn kein Eintrag vorhanden ist.
+func (s *ScreenStore) GetDisplayState(ctx context.Context, screenID string) (string, error) {
+	var state string
+	err := s.pool.QueryRow(ctx,
+		`select coalesce(display_state,'unknown')
+		   from screen_status where screen_id = $1`, screenID).Scan(&state)
+	if err != nil {
+		// Kein Eintrag → unbekannt, kein Fehler
+		return "unknown", nil
+	}
+	return state, nil
+}
+
 // ------------------------------------------------------------------
 // MediaStore
 // ------------------------------------------------------------------