Generally, the bonding between touch panel and display module is by double-side tape. Since the impact of the air layer between touch panel and display module, the display contrast of double-side tape bonding is not good, and the reflectivity is high. So proposing that using the optical glue to fill the air layer in order to decrease the loss of light, making the touch display module is with lower reflectivity (about 3% less than the reflectivity of common bonding) and higher contrast.