An interview with reflective display developer Solchroma

US-based Solchroma develops a novel reflective inks and actuators based display technology, targeting the outdoor signage market (at least as a first step).

Solchroma full-color system schematic

The company introduced its interesting technology at SID Displayweek 2021. The company's CEO, Dr. Roger Diebold was kind enough to explain the company's technology and business to E-Ink-Info.

Hello Roger, thank you for your time. Can you explain Solchroma's ePaper technology?

Solchroma creates reflective digital displays to change how we interact with the built environment and world around us. Solchroma’s technology is based on hydraulically forcing of colored liquid ink in and out of view. A backplane of actuators acts as an array of electrically-controlled pumps that push on nearby reservoirs of ink. Ink reservoirs are shielded from view by a white reflector, while simultaneously allowing passage of ink from the reservoirs behind the reflector to three sealed, viewable chambers stacked one atop the next on the viewable side.

E Ink launches the world's first on-cell touch ePaper display

E Ink Holdings has launched an on-cell touch ePaper module, which it says is the world's first. EIH's on-cell touch technology can be applied to the company's E Ink Carta monochrome displays and its Kaleido Plus color displays.

E Ink Kaleido on-cell touch display photo

Most e-readers today add a touch layer onto the E Ink display. EIH says that the new technology will increase the contrast ratio by 30% compared to the standard added touch layer solution. For the Kaleido Plus displays, the on-cell will increase color contrast ratio by 40% and the color saturation by 15%. As an added bonus, the on-cell touch solution will be more cost effective and could help reduce eReader prices.

E Ink launches new four-color shelf label ePaper displays

E Ink Holdings launched a new display called E Ink Spectra 3100, which is a next-generation four-color ePaper display aimed to support Electronic Shelf Labels (ESL) and retail signage.

Four color E Ink Spectra 3100 labels photo

Thew new Spectra 3100 features four-particle electronic ink, in black, white, red and yellow. It features an improved update time, and an expanded temperature range for red and yellow states. Spectra 3100 displays will be offered in panels with an updated all-in-one driver IC that supports premium ESLs with higher resolution across various sizes.

E Ink announces its latest color display, the Kaleido Plus

E Ink Holdings officially launched its new color ePaper display, the E Ink Kaleido Plus. The new display technology enables 16-levels of grayscale and 4,096 colors. The new display offers sizes up to 7.8-inch in size (larger than E Ink's first generation Kaleido displays).

Sony DPT-CP1 Version 2 photo

E Ink explains that with the new Kaleido display, it has implemented an improved printed color filter array (CFA) technology, with an improved, faster and brighter ink player. These two improvements enable brighter colors with better text rendering.

Sony to update its DPT-CP1 10.3" color eNotebook

In 2019 Sony released the DPT-CP1 color Digital Paper A5 device, and now the company is set to release a new version, called (at least for now) the DPT-CP1 Version 2.

Sony DPT-CP1 Version 2 photo

The main new feature uses E Ink's upgraded color display (Kaleido 2.5), which features a thinner gap between the display and the color filters which enables the improved performance. The new display features a 1404x1872 resolution and faster refresh.

Plastic Logic's 2.1" flexible color (ACeP) display panel is now available on the ePaper Marketplace

Plastic Logic's 2.1-inch Legio 240x146 full-color (ACeP) OTFT-driven E Ink display is now available through the ePaper Marketplace.

The display can show four colors (Red, blue, green, yellow plus black and white) and supports a bending radius of 30 mm for the display area and 40 mm for the chip area. The display is suitable for wearables, IoT, and other applications where color, flexibility, ultra low power consumption and a small display are all required.

Plastic Logic launches its Legio 4-colors ACeP E Ink display range

Plastic Logic launched a new range of color E Ink displays, under the Legio brand. The first panel the company is offering a is a 2.1-inch 240x146 4 color flexible display, with an Ultrachip UC8156 single chip EPD controller. The 2.1" Legio is available as engineering samples and in volume.

Plastic Logic Legio color E Ink display module photo

Plastic Logic offers a range of controller platforms and reference sizes, which will be available soon - and the company also offers a custom design to support specific display needs.

EIH increases color e-paper production capacity, provides a positive outlook for H2 2020

E Ink Holdings says that color e-paper will become more and more important for the company, and it is increasing its capacity as demand is growing - by the end of 2020 it will increase its capacity by 10-fold, and it is likely to increase production capacity further in 2021.

E Ink and Innolux, 28'' color epaper display

The company also provided a positive outlook for the 2nd half of 2020, as demand for electronic shelf labels (ESL) is increasing - in H1 2020 E Ink shipped as many ESL displays as it did in the whole of 2019. The company's chairman says that 4% of the world's retailers have adopted electronic shelf labels

E Ink and Innolux join forces to bring next-gen color ACeP E Ink displays to market

E Ink Holdings announced a collaboration with Taiwan-based display maker Innolux to develop large-size color (ACeP) panels. Specially, EIH will produce ACeP E Ink displays and Innolux will produce display modules and promote them to the market.

E Ink and Innolux, 28'' color epaper display

The two companies will focus on IoT and Smart City applications. Some example of target applications include public transportation signage (including metro, railway, trains and buses), in-vehicle signage and retail signage.

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