Product Proposal

320RGB x 240 a-Si TFT LCD Driver
Integrated Power Circuit, Gate and Source Driver

SSD2118B is an all in one a-Si TFT driver that integrated the power circuits, gate driver and source driver into single chip. It can drive a 16.7M / 262k / 8 color a-TFT panel with resolution of 320 RGB x 240. The interface follows 8 bit serial/24 bit parallel RGB or ITU-R BT.601/656 input signals and digital control timing signals.

It embeds DC-DC Converter and Voltage generator to provide all necessary voltage required by the driver with minimum external components. A Common Voltage Generation Circuit is included to drive the TFT-display counter electrode. SSD2118B supports RGB Gamma settings. An Integrated Gamma Control Circuit is also included that can be adjusted by software commands to provide maximum flexibility and optimal display quality.

The driver can be operated down to 1.6V and provide different power save modes. It is suitable for any portable battery-driven applications requiring long operation period with compact size.

• 320RGB x 240 single chip controller driver IC for 16.7M/ 262k/8 color amorphous TFT LCD

• Power supply

  • V_DDEXT = V_{DDIO =} 1.6V – 3.60V (I/O Interface)

  • V_CI = 2.5V - 3.6V (power supply for internal analog circuit)

• Output Voltages

  • Gate Driver: 

    • V_GH-GND = 6V~18V

    • V_GL-GND -6V ~ -15V

    • V_GH-V_GL = 30V_p-p  

  • Source Driver: 

    • V0 - V255 = AGND+0.1V ~ VCIX2-0.1V

    • Typical source Output Voltage variation : ±15mV

  • VCOM Driver: 

    • V_COMH = 2.5V ~6.0V 

    • V_COML = 0V ~ -3.0V 

    • V_{COM amplitude} = 6V(max)

• Operation frequency

  • 32MHz (max)

• System Interface 

  • Serial Peripheral Interface (SPI), 3 wire, 4 wire and SPID interface

• Moving picture display interface

  • 24-bit RGB interface (DEN, DOTCLK, HSYNC, VSYNC, RR[7:0], BB[7:0], GG[7:0])

  • 18-bit RGB interface (DEN, DOTCLK, HSYNC, VSYNC, RR[7:2], BB[7:2], GG[7:2])

  • 8-bit serial RGB interface

  • 6-bit serial RGB interface

  • NTSC interlace ITU-R BT.601/656 8-bit input mode

• Support low power consumption: 

  • Low voltage supply 

  • 8-color display mode for power saving 

  • Charge sharing function for switching circuits

  • Software settable for Shut and 8 color modes

• Internal power supply circuit 

  • Voltage generator 

  • DC-DC converter up to 6x/-5x 

• Support PWM backlight control

• Support Dynamic Backlight Control (DBC)

• Support stripe and delta pattern color filter

• Support Frame and Line inversion AC drive 

• TFT storage capacitance: Cs on common 

• Support source and gate scan direction control

• Built-in Non Volatile Memory (MTP) for VCOM calibration

• Auto sleep while abnormal power down