This document discusses, among other things, an apparatus comprising a pump configured to deliver insulin, a processor, and a user interface including a bistable display. A display element of the bistable display is placed in one of two stable orientations upon application of a biasing voltage and stays in the stable orientation when the biasing voltage is removed. The processor includes a display module configured to display a non-blank reversion display screen on the bistable display when no input is received at the user interface after a specified time duration, and to recurrently change the reversion display screen until input is received at the user interface.

A total internal reflection display includes a sub-pixel, a reflecting layer, at least one first stereoscopic electrode and a display medium layer. The sub-pixel is defined by a color filter and a black matrix disposed adjacently to the color filter. The reflecting layer is located beneath the sub-pixel. The first stereoscopic electrode is located beneath the black matrix. The width of the first stereoscopic electrode is less than the width of the black matrix. The display medium layer is located between the sub-pixel and the reflecting layer. The height of the first stereoscopic electrode is greater than half of the thickness of the display medium layer.

This document discusses, among other things, an apparatus comprising a pump configured to deliver insulin, a processor, and a user interface including a bistable display. A display element of the bistable display is placed in one of two stable orientations upon application of a biasing voltage and stays in the stable orientation when the biasing voltage is removed. The processor includes a display module configured to display a non-blank reversion display screen on the bistable display when no input is received at the user interface after a specified time duration, and to recurrently change the reversion display screen until input is received at the user interface.

The present invention provides improved driving methods for four particle electrophoretic displays. The driving methods improve the color state performance when a first pixel is displaying a mixed state of a first highly-charged particle and a second lower-charged particle of the opposite polarity, while a neighboring pixel is displaying a state of a second highly-charged particle having the opposite polarity to the first highly-charged particle. The particles can be, for example, all reflective or one type of particle can be partially light transmissive.

Embossing resins, methods of manufacturing such resins, and electrokinetic display system, which includes display cells containing such resins. The resins include a fluoropolymer in weight percentage 5%-60%, a difunctional diluent in weight percentage 0-30%, a monofunctional diluent in weight percentage 0-40%, a urethane diacrylate or functionalized nanoscale material, e.g., a functionalized urethane material, in weight percentage 5-50%, a photoinitiator in weight percentage 0.5-5%, and a surfactant in weight percentage less than 0.5%. The difunctional diluent may be Hexanediol Diacrylate, and the monofunctional diluent may be a monofunctional hydrocarbon. The resins are made by identifying a target index of refraction for a cured state thereof, and combining together, by weight percentage, the constituent components to produce the liquid state version of the embossing resin having a desired composite index of refraction.

The display device includes at least one pixel having a first capacitive element having a first terminal and a transistor connected to the first terminal and having a second terminal and a gate electrode. A driving method of the display device including in a first frame, a signal with a first pulse width is supplied to the gate electrode of the transistor, and a first voltage is written from the second terminal to the first terminal. In the second frame after the first frame, a signal with a second pulse width is supplied to the gate electrode, and the first terminal holds the first voltage. In the third frame after the second frame, a signal with a third pulse width is supplied to the gate electrode, and the second voltage is written from the second terminal to the first terminal.

An electronic shelf label, which comprises: a display unit, which is designed for displaying image content, and a communication module, which is designed for wireless communication for the purpose of receiving image data, which represent the image content, and for transferring the image data to the display unit,
characterized in that a detector unit is provided, which is designed for detecting an incorrect positioning, which differs from a desired positioning, of the electronic shelf label, and for outputting an action signal when the incorrect positioning is detected, and in that the electronic shelf label is designed to change the image content when the action signal is present.

A method for driving electro-optic displays so as to reduce visible artifacts are described. Such methods include driving extra pixels where the boundary between a driven and undriven area would otherwise lead to artifact by providing paired sets of driving instructions, allowing the undriven area to be driven while maintain the desired (undriven) optical state.

An attendance tracking device for keeping a restroom cleaning log includes a radio-frequency, RF, module that periodically sends beacon signals and receives at least one response signal from a mobile device of a user. The tracking device further includes an electrophoretic display having a display controller and memory. The display controller executes a method that includes causing the RF module to periodically send beacon signals, detecting a received response signal from the mobile device, creating an attendance log including time stamp information regarding the presence of the mobile device, and triggering an update of the electrophoretic display to display the attendance log. A mobile device can be adapted to implement or be used in connection with the attendance tracking device. A system includes the attendance tracking device and the mobile device. Methods for operating the attendance tracking device and the mobile device are used to implement attendance tracking.

An electrophoretic medium comprises a fluid, a first, light scattering particle (typically white) and second, third and fourth particles having three subtractive primary colors (typically magenta, cyan and yellow); at least two of these colored particles being non-light scattering. The first and second particles bear polymer coatings such that the electric field required to separate an aggregate formed by the third and the fourth particles is greater than that required to separate an aggregate formed from any other two types of particles. Methods for driving the medium to produce white, black, magenta, cyan, yellow, red, green and blue colors are also described.