Delta Electronics, Inc.

Jau-Shiu Chen

Keh-Su Chang

Yen-I Chou

Chi Chen

Meng-Han Liu

Chang-Jing Yang

Rong-Chang Liang

Wei-Chih Hsiao

Chun-Fang Hsu

Yao-Ching Huang

Sheng-Kai Hsiao

A vat heating device is provided, including a vat and a heater. The vat has a bottom plate. The vat is used to accommodate a photosensitive resin. The heater is disposed on the bottom plate, adjacent to the photosensitive resin. The heater is used to heat the photosensitive resin. The heater is on an optical path of a light source for curing the photosensitive resin. A photocuring three-dimensional molding system containing the above vat heating device is also provided.

Photocuring three-dimensional molding system and vat heating device

An optical wavelength converter includes a first substrate, a first wavelength conversion material, and a second substrate. The first substrate has at least one first segment. The first wavelength conversion material is contained in the first segment for converting a first waveband light into a second waveband light. The second waveband light is reflected by the first segment. The second substrate is arranged beside the first substrate, and has at least one second segment. The first waveband light is transmitted through the second segment.

Optical wavelength converter and illumination system with same

An illumination system includes a solid-state light-emitting element and a wavelength-converting device. A first waveband light is emitted to an optical path by the solid-state light-emitting element. The wavelength-converting device is disposed on the optical path and includes a phosphor plate. The phosphor plate is a solid mixture having a phosphor agent and a binder. The weight percent of the phosphor agent is from 10 to 70, such that the first waveband light is transformed into a second waveband light. Under this circumstance, the efficiency of heat conduction of the phosphor plate is effectively enhanced, thereby enhancing the converting efficiency of the wavelength-converting device, which is strong enough to be applied to rotate with great rigidity. Meanwhile, not only the space requirement is reduced, but also the phenomena of hot spot and heat diffusion are avoided, such that the cost and difficulty of manufacturing the wavelength-converting device are significantly reduced.

Illumination system and wavelength-converting device thereof

A wavelength-converting device includes a first substrate, a second substrate and a first wavelength-converting material. The first substrate has a first region and a first engagement portion. The second substrate is disposed adjacent to the first substrate and having a second region and a second engagement portion. The second engagement portion and the first engagement portion have complementary shapes. The first wavelength-converting material is disposed on the second region for converting a light in a first waveband into a light in a second waveband. The light in the first waveband is transmitted through the first region, and the light in the second waveband is reflected by the second region. The first region and the second region are staggered, so that the first engagement portion and the second engagement portion are engaged and fixed with each other. As a result, the safety and stability are enhanced, and the noise is reduced.

Wavelength-converting device and illumination system using same

An illumination device includes a solid-state light-emitting element, and a wavelength-converting device with a transmissive substrate, a phosphor layer and a reflective optical layer. The transmissive substrate has a refraction coefficient ngreater than an ambient refraction coefficient n. The phosphor layer is disposed over a side of the transmissive substrate and the reflective optical layer is disposed over a side of the transmissive substrate opposite to the phosphor layer. The reflective optical layer has an effective refraction coefficient n. The relation between n, nand nis given by n&#x3e;2(n)/n.

Illumination system multi-layered wavelength-converting device

An illumination module includes a light source, a color wheel, an actuator, and a reflective unit. The light source is for providing a light beam with a first wavelength band. The color wheel has an outer annular section and an inner annular section. The color wheel includes a wavelength conversion segment disposed at the outer annular section and a plurality of filter segments disposed at the inner annular section. The wavelength conversion segment is configured to convert a portion of the light beam with the first wavelength band into a light beam with a second wavelength band, and has at least one wavelength conversion material including yttrium aluminum garnet (YAG) phosphors. The filter segments are respectively configured to filter desired wavelength bands of the light beam. The reflective unit is configured to reflect the light beam passing through the outer annular section to the inner annular section.

Illumination module

A method for manufacturing a switchable particle-based display is provided, which includes steps of: providing a substrate having a grid structure thereon to define a plurality of cells; providing a template having a plurality of template ribs thereon to define a plurality of compartments corresponding to the plurality of cells; filling a plurality of display particles into the plurality of compartments on the template; transferring the plurality of display particles from the plurality of compartments on the template to the plurality of cells; and removing the template and mounting an opposite substrate over the substrate.

Method for manufacturing switchable particle-based display using a pre-filling process

An embodiment of the invention provides a driving method for a display unit, wherein the display unit includes a first electrode, and a second electrode disposed opposite to the first electrode, wherein the first electrode is separated from the second electrode by a distance, and a first particle with a polarity is distributed between the first electrode and the second electrode. The driving method includes the steps of: casting a first voltage difference between the first electrode and the second electrode to make the first particle move toward the second electrode; stopping casting of the first voltage difference; and casting a second voltage difference between the first electrode and the second electrode to apply an opposite force to the first particle, wherein the polarity of the second voltage difference is different from that of the first voltage difference.

Driving methods of display unit

A method of programming a driving waveform for an electrophoretic display (EPD) is provided, wherein the driving waveform includes several single pulses selected from K candidate pulse widths W&#x2dc;W. First, K different constant pulse sequences corresponding to W&#x2dc;Wmay be applied to the EPD, to obtain K sets of discrete electro-optical response data. A polynomial curve fitting algorithm is applied to obtain K relation curves C&#x2dc;Cbetween contrast ratios of the EPD to time, corresponding to the K sets of discrete electro-optical response data. After calculating the slope values S&#x2dc;Sof the curves C&#x2dc;Cat a current contrast ratio of the EPD, a maximum slope Samong S&#x2dc;Sand a specific pulse width Wcorresponding thereto are determined. A next contrast ratio of the EPD is calculated according to Wand S. The design process is repeated until the next contrast ratio of the EPD exceeds a target value.

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Taoyuan Hsien, Taiwan

Jau-Shiu Chen