The victim is a 35-year-old man from Nybro.
According to the indictment, the injuries must have been life-threatening, as the screwdriver penetrated through the skull and into the right temporal lobe of the brain.
The prosecutor primarily wants the 30-year-old to be sentenced for attempted murder, with aggravated assault as an alternative crime classification.
The 30-year-old denies any wrongdoing.
The 35-year-old victim and another man in his 40s are also charged on suspicion of assault after the fight.
The 35-year-old confesses while the 40-year-old denies the crime.
According to the interrogation protocol, the background to the fight must have been jealousy.