Tactile displays are used as feedback systems in many real-life applications (virtual reality, remote interactions, telesurgery etc.). There are multiple tactile display technologies available: electrotactile displays, vibrotactile displays, electrovibration, ultrasonic displays etc. These displays stimulate the cutaneous receptors beneath the skin to perceive different tactile feelings such as tingling, tickling, pressure, stretch and vibration. Electrotactile and electrovibration use electrical signals to stimulate the receptors. Although they have lower power consumption than mechanical displays, they create discomfort for users for prolonged usage. The users have reported skin irritation with the prolonged usage and sometimes burn. Our study presents a method of threshold reduction for electrical displays using a background stimulation of other modalities at subthreshold and therefore making the technology safer for the users. We have conducted four psychophysical studies for the reduction of the threshold. In ETVT (electrotactile Vibrotactile), we used a 10% subthreshold vibrotactile stimulus which reduced the threshold of electrotactile stimulus by 3 to 5%. In ETTS (electrotactile with Thermal Stimulation), we used a 7 °C rise in skin temperature, which reduced the threshold for electrotactile stimulus by 15%. We have conducted a study on the spatial summation of electrotactile displays at subthreshold. Electrovibration is used to provide textures in the touchscreens and requires high voltage (100 to 300 V) to produce adequate electrostatic frictional force for perceiving textures. We used a subthreshold electrotactile stimulus in the background to reduce the threshold for electrovibration by 12.46%. All the displays at a lower threshold improve the safety for the users and help the users avoid the fear of current shock.