Abstract: A method for laser distance measuring includes: emitting an incident ray ? having an incident angle ? to a reflective surface of a laser reflecting mirror (31), the incident ray ? being reflected by the laser reflecting mirror (31) to generate a first reflected ray ?, and the first reflected ray ? irradiating an object to be measured (1000); capturing a second reflected ray ? and generating a laser image on a laser imaging plane (3221), the second reflected ray ? being generated by the reflective surface of the laser reflecting mirror (31) reflecting a return ray ? generated after the first reflected ray ? irradiates a surface of the object to be measured; and determining, based on the laser image, a measurement distance A according to a geometrical trigonometry.

Abstract: The present disclosure disclose a microscopic device and a focusing method of the microscopic device, the microscopic device includes an object stage configured to carry a transparent carrier and drive the transparent carrier to translate along at least one direction, the transparent carrier includes at least two object positions; a microscopic objective located on a side of the object stage; a rangefinder located on a same side of the object stage as a microscopic objective and at a same height relative to the object stage, and the rangefinder is configured to measure a distance between a surface of each of the at least two object positions and the microscopic objective; a focusing module configured to adjust a position of the microscopic objective along a first direction based on the distance measured by the rangefinder, wherein the first direction is perpendicular to a carrying surface of the object stage.

Abstract: The present invention provides a solution for a highlight or multicolor display device, in which each display cell can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises three types of pigment particles, having different levels of size, threshold voltage or charge intensity.

Abstract: An electrophoretic display including a passive matrix formed of row and column electrodes with an electrophoretic medium including two types of differently-colored charged particles disposed between the row and column electrodes. When the device is driven to a first color state by providing a voltage differential of 15V, the color state is stable for voltage differentials between 15V and ?5V. The display switches to the second color state when a voltage differential of ?15V is provided.

Abstract: An electrophoretic display including a passive matrix formed of row and column electrodes with an electrophoretic medium including two types of differently-colored charged particles disposed between the row and column electrodes. When the device is driven to a first color state by providing a voltage differential of 15V, the color state is stable for voltage differentials between 15V and ?5V. The display switches to the second color state when a voltage differential of ?15V is provided.

Abstract: The present invention is directed to an electrophoretic fluid which comprises additive particles. The concentration of the additive particles in the electrophoretic fluid does not exceed 25% by weight and the additive particles are not seen at the viewing side during operation of the display. The resulting fluid can improve optical performance of a display device, such as image stability and contrast ratio. The present invention is also directed to an electrophoretic display comprising the electrophoretic fluid.

Abstract: This invention relates to an electrophoretic display fluid comprising non-charged or slightly charged color particles and at least one type of charged pigment particles, all dispersed in a solvent or solvent mixture, and an electrophoretic display device utilizing such a display fluid. The electrophoretic fluid of the present invention provides improved image qualities.

Abstract: The present invention is directed to methods of passively driving an electrophoretic display. The electrophoretic fluid comprises three types of particles wherein two types particles are charged pigment particles having opposite charge polarities and contrasting colors. The third type of particle is larger in diameter than the first and second types of particles, and is less charged than the first and second types of particles, i.e., the third particle type is substantially uncharged. The electrophoretic medium is driven with two sets of electrodes, each set comprising a number of addressable electrodes.

Abstract: The present invention provides a solution for a highlight or multicolor display device, in which each display cell can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises three types of pigment particles, having different levels of size, threshold voltage or charge intensity.

Abstract: A total internal reflection image display comprised of dry electrostatically mobile particles composed of a solid material stably floating as a dispersant in a gas and exhibiting a high fluidity in an aerosol state may be sealed between the transparent sheet capable of total internal reflection such as comprising a plurality of transparent convex or hemi-spherical protrusions and the rear support, partition walls and the dry particles may be moved by application of a voltage bias. A method of manufacture is described comprising of the steps of forming partition walls, filling with dry particles, sealing the particles into cells or compartments.

Abstract: The present invention provides a solution for a highlight or multicolor display device, in which each display cell can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises three types of pigment particles, having different levels of size, threshold voltage or charge intensity.

Abstract: Total internal reflection image displays are equipped with a bistability enhancement particle interaction layer. The bistability enhancement layer imparts bistability in the display at 0V or power off. The bistability enhancement layer may hold particles near the surface in the evanescent wave region at the front electrode at 0V or power off to retain a dark state image. The particle interaction layer may hold particles near the surface of the rear electrode at 0V or power off to retain a bright state image. Control of particle density improves bistability.

Abstract: The present invention is directed to an electrophoretic fluid which comprises additive particles. The concentration of the additive particles in the electrophoretic fluid does not exceed 25% by weight and the additive particles are not seen at the viewing side during operation of the display. The resulting fluid can improve optical performance of a display device, such as image stability and contrast ratio. The present invention is also directed to an electrophoretic display comprising the electrophoretic fluid.

Abstract: The present invention is directed to an electrophoretic fluid which comprises additive particles. The concentration of the additive particles in the electrophoretic fluid is 2.5% to 25% by weight and the additive particles are not seen at the viewing side during operation of the display. The resulting fluid can improve optical performance of a display device, such as image stability and contrast ratio. The present invention is also directed to an electrophoretic display comprising the electrophoretic fluid.

Abstract: New reflective display architecture embodiments are disclosed to create specular or paper-like reflectance comprising a transparent outer sheet with an optional light diffusing layer, a rear backplane electrode, a perforated continuous reflective or non-reflective film with a thin conductive reflective or transparent layer acting as a front electrode facing the transparent outward sheet placed between the transparent outward sheet and rear backplane electrode. Other variations include semi-retroreflective or sintered TiO2 layers atop the front electrode. Light is modulated by reflectance or absorbance of the light rays that pass through the transparent outward sheet by movement of light absorbing electrophoretically mobile particles within an optically transparent liquid or air medium. A voltage bias is applied across the medium by a voltage source to move the electrophoretically mobile particles.

Abstract: The present invention is directed to methods of passively driving an electrophoretic display. The electrophoretic fluid comprises three types of particles wherein two types particles are charged pigment particles having opposite charge polarities and contrasting colors. The third type of particle is larger in diameter than the first and second types of particles, and is less charged than the first and second types of particles, i.e., the third particle type is substantially uncharged. The electrophoretic medium is driven with two sets of electrodes, each set comprising a number of addressable electrodes.