Seiko Epson on June 20 announced the development of its S1D19501 series of driver ICs for 176x220 TFT LCDs, the mainstream display for mobile phones. Shipments of engineering samples has already begun.
The S1D19501 series is a line-up of one-chip drivers for driving amorphous Si (a-Si) TFT LCDs embedded with display data RAM (176x220x18) and capable of displaying 262,144 colors. By embedding a 220-output gate driver and 176 (RGB)-output source driver, as well as the power circuits needed for display onto one chip, it has become possible for a single chip to display a TFT color panel module of up to 176 (RBG) x220 dots.
As a one-chip TFT driver capable of this level of resolution, the S1D19501 Series, which uses a 0.13µm process, is Epson's third-generation of driver products, following the S1D19105 series (176x220x18) fabricated using the 0.25µm process and the S1D19121 series (176x220x18) using the 0.18 µm process. As the S1D19501 inherits basic specifications and commands of the existing Epson TFT drivers, smooth replacement is ensured.
In addition, as a result of employing the super slim technology of the 0.13µm process, the short side of the chip has been reduced to approximately 1mm, which is 34% that of conventional products.
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Product features of the S1D19501 series of driver ICs | |
| Item | Description |
| Interface voltage | 1.65-3.1V |
| Analog voltage | 2.4-3.1V |
| Output voltage | Source: Up to 5.5V |
| LCD driver output | 176 RGB source x 220 gates |
| Display colors | 262k-color mode; 8-color mode |
| Interface | 18/16/9/8-bit parallel; 18/16-bit RGB; Serial |
| Multi time PROM | Equipped with programmable non-volatile memory for VCOM adjustment |
| Shipping form | Gold-bumped chip |
| Current consumption | 2.2mA |
Source: Company, compiled by DigiTimes, June 2006

Seiko Epson's S1D19501 driver IC
Photo: Company




