摘要:
The present invention provides a light emitting diode package which includes a lead frame with a cavity; a mold exposing the cavity and housing the lead frame; and an LED chip mounted on the cavity, wherein light passing an upper edge of the LED chip passes an upper edge of the cavity.
摘要:
Provided is an etching composition for electively removing silicon dioxide at a high etch rate, more particularly, a composition for wet etching of silicon dioxide, including 1 to 40 wt % of hydrogen fluoride (HF); 5 to 40 wt % of ammonium hydrogen fluoride (NH4HF2); and water, and further including a surfactant to improve selectivity of the silicon dioxide and a silicon nitride film. Since the composition for wet etching of silicon dioxide has the high etch selectivity of the silicon dioxide to the silicon nitride film, it is useful for selectively removing silicon dioxide.
摘要:
There is provided a light emitting module including: a printed circuit board; a plurality of light emitting diode chips disposed at a distance from one another on a conductive pattern formed on a top of the printed circuit board; and a connector formed on a bottom of the printed circuit board and electrically connected to the plurality of light emitting diode chips. The light emitting diode chips and the connector are optimally arranged to ensure that the light emitting module is suitably utilized as a high-density linear light source including a great number of light emitting diode chips and emits light outward with minimum loss.
摘要:
A backlight unit for a liquid crystal display (LCD) device, disposed under a liquid crystal panel to illuminate the liquid crystal panel. The backlight unit includes a light guide plate, first and second light emitting diode (LED) arrays, disposed on adjacent sides, perpendicular to each other, of the light guide plate, each array having a plurality of LED blocks, consisting of one or more LEDs, and a control unit that controls electric signals, respectively inputted to the LED blocks, to regulate luminance for the respective LED blocks, wherein light emitted from the first and second LED arrays is overlapped each other in the light guide plate.
摘要:
An ink composition for roll printing is provided. The ink composition uses a solvent having an evaporation rate (Vt) of at least 0.09 mg/cm2-min and an absorption rate (St) into a blanket of less than 3.5 mg/cm2-min. The use of the highly volatile solvent can minimize swelling of the blanket without impairing the dispersibility of a pigment in the ink composition. Therefore, the uniformity of a pattern formed using the ink composition can be maintained and the formation of defects by the solvent can be minimized.
摘要翻译:提供了一种用于辊印的油墨组合物。 油墨组合物使用具有至少0.09mg / cm 2·min的蒸发速率(Vt)和小于3.5mg / cm 2·min的毯子的吸收速率(St)的溶剂。 使用高挥发性溶剂可以最小化橡皮布的溶胀,而不损害颜料在油墨组合物中的分散性。 因此,可以保持使用油墨组合物形成的图案的均匀性,并且能够最小化溶剂形成缺陷。
摘要:
Provided are a photosensitive resin and a photosensitive resin composition comprising the photosensitive resin. The photosensitive resin has the structure of Formula 1, which is described in the specification. The photosensitive resin and the photosensitive resin composition have good sensitivity, improved resistance to heat and chemicals, and excellent storage stability. Further provided are a method for preparing the photosensitive resin and a cured product of the photosensitive resin composition.
摘要:
The present invention refers to a flexible conduit element for an exhaust system of a combustion engine vehicle, comprising a helically or annularly corrugated metal bellows member, an outer flexible member disposed around the bellows member and the resilient member biasing the flexible outer member towards the metal bellows member. In order to improve the absorption of vibrations of a combustion engine, the outer flexible member comprises a reticulated structure.
摘要:
The present invention relates to a nickel-based catalyst using hydrotalcite-like precursor and a steam reforming reaction by using the catalyst, and particularly to a nickel-based catalyst prepared by dispersing nickel uniformly onto the inner part and the surface of the support through a substitution between the magnesium and the active nickel metal and optimizing the molar ratios of nickel, magnesium and aluminum in order to utilize nickel as an active metal and a hydrotalcite-like precursor consisting of aluminum and magnesium, which shows an increased specific surface area of the catalyst and surface area of the active nickel, and thus enables the production of hydrogen-rich gas in high yield during the steam reforming reaction of LPG with superior maintenance of catalytic activity for a long period of time due to the inhibition of carbon deposition.
摘要:
The present invention relates to a flash memory device and, more particularly, to a flash memory device which can obtain the accurate and rapid current drive ratio by storing current drive ratio for some probable cases in the memory cell in advance, and selecting and using the most proper current drive ratio as required by means of external command.