5.1: Development of In‐Plane EPD

Abstract

An in-plane electrophoretic display has been developed aiming at a paper-like-display. Prototype displays exhibit a bright and clear appearance just like copies on paper, excellent stability against deformation and memory behavior. Essential characteristics for passive matrix addressing based on a control electrode system are achieved in structural or electric barrier type implementations.

Lattice Constant Tuning and Disorder Effects in 3D Colloidal Photonic Crystals

“…Typical values achieved by other emerging display technologies are 8.5:1 for E-Ink [25] and up to 450:1 in a dye-doped reflective LC display [26]. Reflective cholesterics generally have a contrast ratio around 10:1, in-plane electrophoretic devices can also get contrast ratios of up to 11.3:1 [27] The achievable contrast for the display shown here, has been investigated using the 3D FDTD model. We have taken a typical case shown for five layers of 200 nm, particles at a spacing of 225 nm as shown in Fig.…”

Digital lithography for large-area electronics on flexible substrates

“…Reflective displays based on electrophoretic inks are promising for flexible displays with paper-like visual appearance [17][18][19][20][21]. Flexibility is desirable for ruggedness and for conformal or roll-up displays in addition to reducing processing cost and complexity in a roll-to-roll process.…”

A new bi-primary color system for doubling the reflectance and colorfulness of e-paper

“…1d) allows the complimentary colors to mix (overlap) and therefore create black, or the colors are removed from the pixel area they can reveal a white background. Pixel technologies that could work for mixing biprimary include electrophoretic (vertical [1] and horizontal in-plane [5], or combinations thereof such as elecrokinetic [6]). Other technologies such as liquid crystal or MEMs may also be capable of non-mixing or mixing bi-primary function, but currently lack the ability to so (e.g.…”

“…Shown in Fig. 4 are diagrams for bi-primary operation with horizontal 'in-plane' electrophoretic [5]. With proper modification, similar functionality should be achievable for electrokinetic [6] pixel technology under development by HP.…”