Peter_n:
An I2C lcd display connects to the I2C bus. It has a i2c I/O expander to create the signals for the lcd display.
LCD Shield Kit w/ 16x2 Character Display - Only 2 pins used! [BLUE AND WHITE] : ID 772 : Adafruit Industries, Unique & fun DIY electronics and kits
i2c / SPI character LCD backpack - STEMMA QT / Qwiic : ID 292 : Adafruit Industries, Unique & fun DIY electronics and kits
Since i am using Ds1307 . Which also uses i2c protocol . is there any problem because of it.