Daejoo Electronic Materials Co.

Siheung, South Korea

Daejoo Electronic Materials Co.

Siheung, South Korea
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Provided are a negative electrode active material for a non-aqueous electrolyte rechargeable battery, a method for preparing the same, and a non-aqueous electrolyte rechargeable battery including the same and, more specifically, a negative electrode active material for a non-aqueous electrolyte rechargeable battery, including a silicon oxide composite, capable of degrading irreversible characteristics and improving structural stability of the non-aqueous electrolyte rechargeable battery, the silicon oxide composite containing silicone, a silicon oxide represented by general formula SiO_(x) (0


Patent
Dae Joo Electronic Materials Co. and Sungkyunkwan University | Date: 2012-01-27

The present disclosure relates to a producing method for oxynitride or nitride phosphor powders which can be used in displays such as vacuum fluorescent display (VFD), field emission display (FED) and LED display devices, or in lighting devices such as cold cathode fluorescent lamps (CCFL) and LED lamps, or in light-emitting apparatuses such as back-lights, wherein the producing method for phosphor powders comprises the step of subjecting part or all of a metal oxide to nitriding by calcining in an atmosphere containing nitrogen, using a fine carbon substance.


Patent
Sungkyunkwan University and Dae Joo Electronic Materials Co. | Date: 2012-07-04

The present invention relates to a production method for oxynitride or nitride phosphor powders which can be used in displays such as vacuum fluorescent displays (VFDs), field emission displays (FEDs) and LED display devices, or in lighting devices such as cold cathode fluorescent lamps (CCFL) and LED lamps, or in light-emitting apparatuses such as back-lights, wherein the production method for phosphor powders comprises the step of subjecting part or all of a metal oxide to nitriding by calcining in an atmosphere containing nitrogen, using a fine carbon substance.


Patent
LG Innotek and Dae Joo Electronic Materials Co. | Date: 2015-02-10

Provided is a glass composition for a ceramic phosphor plate, including: 75 to 85 mol % of an oxide mixture composed of SiO_(2), B_(2)O_(3 )and ZnO; 10 to 15 mol % of at least one carbonate compound including an alkali metal; and 1 to 5 mol % of Al_(2)O_(3), wherein a content of B_(2)O_(3 )is less than 25 mol %.


Patent
LG Innotek and Dae Joo Electronic Materials Co. | Date: 2015-08-12

Provided is a glass composition for a ceramic phosphor plate, including: 75 to 85 mol% of an oxide mixture composed of Si02, B2O3 and ZnO; 10 to 15 mol% of at least one carbonate compound including an alkali metal; and 1 to 5 mol% of Al2O3, wherein a content of B2O3 is less than 25 mol%.


The present invention provides a compound represented by the following formula 1. The compound of the present invention has high luminance, high luminous efficiency, excellent color purity and excellent high-temperature stability, and thus can provide a material for an organic electroluminescent device and an organic electroluminescent device having a long lifetime.


The present invention provides a compound represented by the following formula 1. The compound of the present invention has high luminance, high luminous efficiency, excellent color purity and excellent high-temperature stability, and thus can provide a material for an organic electroluminescent device and an organic electroluminescent device having a long lifetime.


Patent
Daejoo Electronic Materials Co. | Date: 2013-11-13

A fluorescent material of a garnet structure having an aluminate-based fluorescent material, cerium as an activator and thulium as a coactivator can emit green light with high luminance under an excitation condition by a blue light source, and therefore, it is useful as a fluorescent material for a white light emitting diode.


A camera module is disclosed, the camera module including a PCB (Printed Circuit Board), a base arranged at an upper surface of the PCB, a holder member arranged at an upper surface of the base and formed with a plurality of magnet reception portions, a surface of which facing the base is opened, and a plurality of magnets coupled to the magnet reception portions, wherein the base is formed with a protrusion configured to support a bottom surface of the magnet by being protrusively formed at a position corresponding to an opening of the magnet reception portions.


The present invention relates to a fluorine-containing magnesium oxide powder using a vapor phase reaction and a method of preparing the same and more particularly to a fluorine-containing magnesium oxide powder brings about a cathode-luminescence emission having a peak within a wavelength range of 220 to 320 nm upon being excited by electron beams. The present invention provides a fluorine-containing magnesium oxide powder using a vapor phase reaction that sprays fluorine-containing gas and oxygen-containing gas to magnesium vapor, and the purity of magnesium oxide containing fluorine (i.e. the purity of fluorine-containing magnesium oxide) of 0.001 to 2 wt % is at least 98 wt % and a BET specific surface area thereof is 0.1 to 50 m^(2)/g.

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