It was my problem also. Thank you for help!
bwginfo:
Welcome
I attached the source code from ILI9481 driver ver : 2.0
It fixes from version 1.x problem
editing the original file f : \ Arduino \ libraries \ UTFT \ tft_drivers \ ili9481 \ initlcd.h
initlcd.h for ILI9481 ver:2.0
case ILI9481:
LCD_Write_COM(0x11); //0x11
delay(20);
LCD_Write_COM(0xD0); //(0xD0)
LCD_Write_DATA(0x07); //(0x07)
LCD_Write_DATA(0x41); //(0x42)
LCD_Write_DATA(0x1D); //(0x1B)
LCD_Write_COM(0xD1); //(0xD1)
LCD_Write_DATA(0x00); //(0x00)
LCD_Write_DATA(0x2B); //(0x07)
LCD_Write_DATA(0x1F); //(0x10)
LCD_Write_COM(0xD2); //(0xD2)
LCD_Write_DATA(0x01); //(0x01)
LCD_Write_DATA(0x11); //(0x02)
LCD_Write_COM(0xC0); //(0xC0) //Panel Driving Setting / Set Default Gamma
LCD_Write_DATA(0x00); //(0x10)
LCD_Write_DATA(0x3B); //(0x3B)
LCD_Write_DATA(0x00); //(0x00)
LCD_Write_DATA(0x02); //(0x02)
LCD_Write_DATA(0x11); //(0x11)
//Display_Timing_Setting for Normal Mode
LCD_Write_COM(0xC1); //
LCD_Write_DATA(0x10); //Line inversion,DIV1[1:0]
LCD_Write_DATA(0x10); //RTN1[4:0]
LCD_Write_DATA(0x88); //BP and FP
LCD_Write_COM(0xC5); //(0xC5) //Frame Rate Control / Set frame rate
LCD_Write_DATA(0x03); //(0x03)
LCD_Write_COM(0xB6); // Display Function Control
LCD_Write_DATA(0x00);
LCD_Write_DATA(0x22); // 0x42 = Rotate display 180 deg.
LCD_Write_DATA(0x3B);
LCD_Write_COM(0xC8); //(0xC8) //Gamma Setting / Set Gamma
LCD_Write_DATA(0x00); //(0x18)
LCD_Write_DATA(0x14); //(0x32)
LCD_Write_DATA(0x33); //(0x36)
LCD_Write_DATA(0x10); //(0x45)
LCD_Write_DATA(0x00); //(0x06)
LCD_Write_DATA(0x16); //(0x18)
LCD_Write_DATA(0x44); //(0x37)
LCD_Write_DATA(0x36); //(0x75)
LCD_Write_DATA(0x77); //(0x77)
LCD_Write_DATA(0x00); //(0x54)
LCD_Write_DATA(0x0F); //(0x0C)
LCD_Write_DATA(0x00); //(0x00)
LCD_Write_COM(0x21); // Display Inversion ON 0x21
LCD_Write_DATA(0xC8); // C8
LCD_Write_COM(0xE4); //
LCD_Write_DATA(0xA0); //
LCD_Write_COM(0xF0); //
LCD_Write_DATA(0x01); //
//======RGB IF setting========
//RGB OR SYS INTERFACE
LCD_Write_COM(0xB4);
LCD_Write_DATA(0x10);//RGB
LCD_Write_COM(0xC6);
LCD_Write_DATA(0x1B);
//============================
LCD_Write_COM(0x36); //(0x36) //set_address_mode MIROR IMAGE LENDSCAPE
LCD_Write_DATA(0x0D); //(0x0D) MIROR AND ORIENTATION IMAGE
//Page Address Order:Top to Bottom,Column Address Order:Right to Left,Page/Column Order:Normal Mode,Line Address Order:LCD Refresh Top to Bottom
LCD_Write_COM(0x3A); //(0x3A) //set_pixel_format
LCD_Write_DATA(0x55); //(0x55) //DBI:16bit/pixel (65,536 colors)
LCD_Write_COM(0x2A); //(0x2A) //set_column_address
LCD_Write_DATA(0x00); //(0x18)
LCD_Write_DATA(0x00); //(0x18)
LCD_Write_DATA(0x01); //(0x18)
LCD_Write_DATA(0x3F); //(0x18)
LCD_Write_COM(0x2B); //(0x2B) //set_page_address
LCD_Write_DATA(0x00); //(0x18)
LCD_Write_DATA(0x00); //(0x00)
LCD_Write_DATA(0x01); //(0x01)
LCD_Write_DATA(0xE0); //(0xE0)
LCD_Write_COM(0x13); //NORMAL DISPLAY
delay(120);
LCD_Write_COM(0x29); //(0x29) //set_display_on / display on
break;