why is necessary a shield with 74LV245 chips ?

Using Arduino Displays
#1

Why is necessary a shield with 74LV245 chips to connect the Arduino Due to the lcd module ?

Can I connect directly the Arduino Due module to LCD ?

arduino_shield_for_tft_lcd_with_ssd1963_controller_compatible_with_mega_due_2_1.jpg
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#2

You don't need 74LV245 chips to connect the Arduino Due. The Due has 3.3V logic.

I suspect that your BuyDisplay Adapter shield has them anyway. They will do no harm.
Most importantly, the Display + Adapter + Due sandwich fits together neatly.

You can hand-wire a Protoshield to perform the Adapter function.
There are a lot of wires to solder. Your time costs more than buying the Adapter.

David.

#3