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Kwon, Gyunggi-Do
Chil Woo Kwon, Gyunggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20110089138 | METHOD OF MANUFACTURING PRINTED CIRCUIT BOARD - Disclosed is a method of manufacturing a printed circuit board, including (A) forming a first circuit layer on a base substrate and forming a first insulating layer thereon, (B) forming trenches including dummy trenches and wiring trenches on the first insulating layer and plating the trenches, thus providing a trench circuit layer including a dummy circuit pattern and a wiring circuit pattern, (C) removing the dummy circuit pattern of the trench circuit layer, and (D) forming a second insulating layer on the trench circuit layer from which the dummy circuit pattern was removed. The method reduces deviation of plating thickness and thus realizes the design density of a trench circuit layer. | 04-21-2011 |
Jung Sun Kwon, Gyunggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20110140627 | APPARATUS FOR DRIVING LIGHT EMITTING DIVICE USING PULSE-WIDTH MODULATOIN - An apparatus for driving a light emitting device (LED) is provided. The apparatus for driving the LED includes a first driving control element, a first current detection unit, a first effective value detection unit, a first reference signal generation unit, and a first comparison unit. The first driving control element controls a current flowing through a first LED channel, in response to a first pulse-width modulated control signal. The first current detection unit detects the current flowing through the first LED channel. The first effective value detection unit detects an effective value of the current detected by the first current detection unit. The first reference signal generation unit generates a preset reference signal having a sawtooth waveform. The first comparison unit compares the reference signal from the first reference signal generation unit with the effective value from the first effective value detection unit. | 06-16-2011 |
Koung Soo Kwon, Gyunggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20110018085 | SILICON PHOTOELECTRIC MULTIPLIER HAVING CELL STRUCTURE - Disclosed is a silicon photoelectric multiplier having a cell structure, which includes a first type silicon substrate; a plurality of cells including a first type epitaxial layer formed on the substrate, a high concentration first type conductive layer formed on the epitaxial layer, and a high concentration second type conductive layer doped with a second type opposite the first type and formed on the high concentration first type conductive layer; a trench formed to optically separate the plurality of cells; and a guard ring formed on an outer wall of the trench so as to reach a bottom surface of the first type epitaxial layer, thus further increasing the degree of optical separation to thereby increase light detection efficiency. | 01-27-2011 |
| 20110074283 | SILICON PHOTOMULTIPLIER TUBE - Disclosed herein is a silicon photomultiplier tube, including: a first type silicon substrate; a cell, each including a first type epitaxial layer formed on the first type silicon substrate, a first type conductive layer formed on the first type epitaxial layer, and a second type conductive layer formed on the first type conductive layer; a separating element located between the cell and a cell adjacent to the cell to separate the cells from each other; and an antireflection coating layer formed on a top surface of the second type conductive layer and an inner wall of the separating element, wherein any one of the first type conductive layer and the second type conductive layer is formed in a plurality of rows. | 03-31-2011 |
Kyoung Soo Kwon, Gyunggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20100244177 | PHOTODIODE CELL STRUCTURE OF PHOTODIODE INTEGRATED CIRCUIT FOR OPTICAL PICKUP AND METHOD OF MANUFACTURING THE SAME - Disclosed herein is a photodiode cell, including: a first-type substrate; a second-type epitaxial layer disposed on the first-type substrate; heavily-doped second-type layers, each having a small depth, formed on the second-type epitaxial layer; and heavily-doped first-type layers, each having a narrow and shallow section, disposed on the second-type epitaxial layer and formed between the heavily-doped second-type layers, wherein the first-type and second-type have opposite doped states. | 09-30-2010 |
| 20110150359 | CURRENT LIMITATION METHOD OF DISPLAY DEVICE - A current limitation method of a display device includes: calculating a brightness average in each frame of an inputted image; calculating a brightness difference between successive frames of the image by using the calculated brightness average, and calculating a cumulative average brightness value by cumulating the brightness average with respect to the frames included in a frame length which is varied depending on the brightness difference; converting the cumulative average brightness value into a preset brightness adjustment value; and adjusting the brightness of the inputted image according to the brightness adjustment value. | 06-23-2011 |
Oh Byoung Kwon, Gyunggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20100157450 | Camera module - Disclosed is a camera module with a hinge spring which can stably support a lens barrel which is driven in a vertical direction for automatic focusing and which is made of lightweight resin, the camera module including a cylindrical lens barrel with lenses disposed therein for collecting images of external objects, a housing encasing the lens barrel in a manner such that the lens barrel vertically moves in an optical axis direction of the lenses, an automatic focusing actuator installed in the housing to cause linear motion of the lens barrel in the optical axis direction, and a ring-shaped hinge spring extrusion-molded using resin having elasticity to support an upper portion of the lens barrel and guide the linear motion of the lens barrel. | 06-24-2010 |
Young-Jun Kwon, Gyunggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20080197693 | Method of Manufacturing Toothbrush with Needle-Shaped Bristles, and Toothbrush Manufactured by the Same - The present invention provides a method of manufacturing a toothbrush having needle-shaped bristles and a toothbrush manufactured using the method. The method of the present invention includes the step of grinding bristles, which have been set in a head part of a toothbrush, using a grinder provided with protrusions having heights ranging from 1.5 mm to 7 mm. A toothbrush having needle-shaped bristles can be manufactured without a separate chemical immersion process such that the thicknesses of the end points of the needle-shaped bristles range from 0.01 mm to 0.03 mm and the lengths of the tapered portions thereof range from 3 mm to 9 mm. Time required for production and the defective proportion is markedly reduced, and materials other than polyester can be used as the material for the bristles. | 08-21-2008 |
| 20080224529 | Method of Tapering Bristles for Toothbrushes, and Toothbrush Having Bristles Manufactured by Said Method - The present invention provides a method of tapering bristles for toothbrushes and a toothbrush having bristles manufactured using the method. One method disclosed in the present invention includes setting bristles made of polyester in a head insert, and fastening the bristles to the head insert by thermally welding portions of the bristles, protruding from a back surface of the head insert, to the head insert. The method further includes coupling the head insert to a toothbrush body and tapering ends of the bristles by immersing the bristles in a chemical. The bristles can be securely set in the toothbrush body without an anchor. Furthermore, polyester bristles, which could not be set in toothbrushes having variously shaped setting rows due to excessively high stiffness, can be set in these types of toothbrush by the toothbrush manufacturing method of the present invention. | 09-18-2008 |
| 20080289131 | Needle-Shaped Bristle and Method of Manufacturing the Same - The present invention provides a needle-shaped bristle and a method of manufacturing the needle-shaped bristle. The manufacturing method of the present invention includes the steps of cutting and removing a packing sheet, which is wound around a bundle of bristles, by a length ranging from 30 mm to 50 mm from a first end thereof, and grinding first ends of the bristles using a rotating grinder. The manufacturing method further includes steps of packing the first end of the bundle of bristles, from which the packing sheet is removed, using a packing sheet, cutting the bundle of bristles to a length ranging from 22 mm to 32 mm, and immersing a second end of the cut bundle of bristles, thus tapering second ends of the bristles. The needle-shaped bristle has an advantage of realizing a reduction in the proportion of defective products. | 11-27-2008 |
| 20080315669 | Method of Manufacturing Toothbrush With Needle-Shaped Bristles and Toothbrush Manufactured by the Same - The present invention provides a method of manufacturing a toothbrush with needle-shaped bristles. The method includes the step of setting needle-shaped bristles, partially tapered by being immersed in a chemical, in a head part of a toothbrush body. The method further includes the step of grinding the needle-shape bristles using a drum grinder having protrusions such that end points of the bristles range from 0.01 to 0.03 mm in thickness and tapered portions of the bristles range from 3.5 to 8 mm in length. A toothbrush, in which needle-shaped bristles having end points of 0.03 to 0.05 mm in thickness and tapered portions of 3.5 to 10 mm in length are set, can be manufactured using the method of the present invention. In the present invention, because a manufacturing process is simplified, the required production time and the proportion of defective bristles are markedly reduced. | 12-25-2008 |
| 20100102619 | PROCESSING METHOD FOR TAPER OF NEEDLE-SHAPED BRISTLE ENHANCED THROUGHPUT - The present invention relates to a method of tapering a toothbrush bristle which increases production efficiency. The method includes the steps of cutting bundles of toothbrush bristles; and non-directionally immersing the entire cut bundles of toothbrush bristles into a chemical solution to taper both sides of the toothbrush bristles. According to the present invention, the production efficiency of a needle-shaped bristle is increased approximately three times, and the loss of raw materials is greatly decreased because several processes are not performed. | 04-29-2010 |
| 20100115725 | MANUFACTURING METHOD OF NEEDLE-SHAPED BRISTLES HAVING SHORT TAPER LENGTH AND A TOOTHBRUSH BY SAME MANUFACTURING METHOD - The present invention relates to a method of manufacturing a needle-shaped bristle having a short taper length. The method includes preparing a bundle of toothbrush bristles by mixing a polyester resin (a polyester resin other than a PTT resin) and a PTT resin in a ratio of 90˜40 to 10˜60 and spinning the mixture thereof; cutting the bundle of toothbrush bristles; and tapering the cut bundle of toothbrush bristles by immersing it into a chemical. According to the present invention, since needle-shaped bristles having a taper length of 6 mm or less can be efficiently obtained, the needle-shaped bristles can be implanted even in an anchorless toothbrush. | 05-13-2010 |