- TOKYO, Japan, August 7, 2025 -

Seiko Epson Corporation (TSE: 6724, "Epson") has developed and begun volume production of a new segment LCD driver IC for both automobile and motorcycle displays.

As electric vehicles become more widespread, the performance and the features of automobiles, and motorcycles advance, manufacturers are increasingly turning to LCDs to accommodate the growing volume of information displayed. However, while larger, high-resolution displays offer more visual detail, they also come with higher costs and are not always practical for motorcycles, where space is limited and high visibility in bright outdoor environments is essential. Additionally, the number of segments that can be driven by a segment LCD driver IC is limited by the IC's segment output capability. Therefore, to display a large amount of information, it is necessary to combine multiple segment LCD driver ICs.

In response to this, Epson developed a new segment LCD driver IC, the S1D15107. This driver expands the number of segment outputs from 368 to 688 compared to the existing product, the S1D15106.

The S1D15107, with its expanded number of segment outputs, enables a single chip to display multiple 16-segment display and icons (Figures 1 and 2). By placing a large number of COM pins on the driver IC, SEG and COM wiring are distributed on the top and bottom substrates of the panel¹, which was difficult with conventional multi-segment displays, contributing to easier wiring when packing the display. The chip also supports the development of highly reliable automotive display systems. It is equipped with display safety features, such as detection of segment/common output abnormalities (open- and short-circuits), and supports operation at temperatures up to 105℃, conforming to the AEC-Q100² standard.

It also retains the key features of the existing segment LCD driver IC. It can be directly connected to a host³ and can display the image data on a segment LCD which is transferred from the host without the need for external memory. With static driving⁴, which enables high contrast, and the use of PWM⁵, which allows for a 16-level grayscale segment display, the device is well-suited for applications that demand enhanced visibility and expressive display capabilities, such as speedometers and tachometers.

Epson is committed to helping customers enhance the performance of their products by leveraging its efficient, compact, and precise technologies to save energy, save space, and deliver exceptional precision and accuracy.

• Segment: 688 outputs Common: 1 output (16 pins)
• Static driving that enables high contrast
• Pulse width modulation that enables the display of 16 grayscale levels
• Display safety features
• Simplified wiring during display assembly

Please see the link below for further product details.

https://global.epson.com/products_and_drivers/semicon/products/lcd_drivers/s1d15107.html

Seiko Epson Corporation

MD Sales Department

https://global.epson.com/products_and_drivers/semicon/information/support.html

Product number	S1D15107 (New)
Supply voltage	System VDD: 2.7 V - 5.5 V
	LCD drive VLCD: 2.7 V - 8.0 V 7.0 V
Host interface	3-wire serial interface
LCD driver	Segment: 688 outputs Common: 1 output (16 pins)
Grayscale	16 levels (with PWM)
Safety features	Display safety features
LCD drive duty configuration	1 / 1 (static driving)
LCD drive bias configuration	1 / 1 (static driving)
Error detection	Bit error detection of command registers Segment/Common output error detection (open- and short-circuits)
Compliant automotive standard	AEC-Q100
Operating temperature range	-40℃ - 105℃
Other	Built-in oscillator circuit
	Power-On reset
Packing type	Shipped in bare die (Au bumps)

* There was an error in the "Product Specifications," which has been corrected in red.

• ¹ The technology used in this product, which distributes wiring across both the top and bottom surfaces of the substrate within the chip, is patent-pending.
• ² AEC-Q100: AEC stands for the Automotive Electronics Council, an industry organization established by major U.S. automobile manufacturers and leading electronic component suppliers to standardize reliability and qualification criteria for automotive electronic components. AEC standards are widely used as the benchmark for automotive components and have effectively become the de facto industry standard.
• ³ Host: The central device responsible for controlling and managing other equipment or components
• ⁴ Static driving: A drive method in which each display segment of an LCD panel is directly connected to a corresponding segment terminal of the LCD driver in a one-to-one configuration.
• ⁵ Pulse width modulation (PWM): A modulation technique where the pulse width (i.e., ON time) is varied to control output levels

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