摘要:
Disclosed are a method for fabrication of a thin film phosphor, a thin film phosphor and a product using the same. The thin film phosphor is fabricated by adsorbing a raw material to a surface of a substrate simultaneously with diffusing the same or, otherwise, depositing the raw material on the substrate and heating the same, so as to diffuse the raw material from the surface of the substrate into the substrate wherein the substrate contains at least one selected from constitutional elements of the phosphor. The fabricated thin film phosphor has a constitutional composition continuously varied to gradually come close to a constitutional composition of the substrate when the constitutional elements of the phosphor are diffused from a surface to an inner side of the substrate. In particular, if the substrate material, the raw material and the phosphor layer material have the same or similar structure, and when the phosphor layer material has an anisotropic texture structure, light luminance is maximized while a decay time is minimized. According to this disclosure, different thin film phosphors with improved luminance comparable to that of a powder phosphor may be fabricated. Compared to such powder phosphor, the thin film phosphor fabricated as described above is thermally and chemically stable and does not exhibit an interference pattern or light reflection between the thin film phosphor and the substrate so as to have excellent light transmission, thereby being applicable to large-scale display devices.
摘要:
Disclosed are a method for fabrication of a thin film phosphor, a thin film phosphor and a product using the same. The thin film phosphor is fabricated by adsorbing a raw material to a surface of a substrate simultaneously with diffusing the same or, otherwise, depositing the raw material on the substrate and heating the same, so as to diffuse the raw material from the surface of the substrate into the substrate wherein the substrate contains at least one selected from constitutional elements of the phosphor. The fabricated thin film phosphor has a constitutional composition continuously varied to gradually come close to a constitutional composition of the substrate when the constitutional elements of the phosphor are diffused from a surface to an inner side of the substrate. In particular, if the substrate material, the raw material and the phosphor layer material have the same or similar structure, and when the phosphor layer material has an anisotropic texture structure, light luminance is maximized while a decay time is minimized. According to this disclosure, different thin film phosphors with improved luminance comparable to that of a powder phosphor may be fabricated. Compared to such powder phosphor, the thin film phosphor fabricated as described above is thermally and chemically stable and does not exhibit an interference pattern or light reflection between the thin film phosphor and the substrate so as to have excellent light transmission, thereby being applicable to large-scale display devices.
摘要:
An organic light emitting diode (OLED) display and a method for driving the same, which can display an image with more uniform luminance is disclosed. In one aspect, the OLED display includes a plurality of pixels arranged in a matrix of a plurality of rows and a plurality of columns; a data driver supplying second data signals corresponding to a second data obtained by converting a first data, in response to first data signals corresponding to the first data or a data control signal; and a compensator converting output currents output from the pixels, corresponding to the first data signals into a output voltages, and supplying, to the data driver, the data control signal for converting the first data into the second data, corresponding to the output voltages and the first data based on the output voltages and the first data.
摘要:
A method for using a portable terminal includes: determining whether an inserted SIM card contains one or more generated user accounts, and displaying a list of the existing user accounts; when any one of the user accounts is selected, identifying a setting value corresponding to the selected user account; and setting a usage environment of the portable terminal according to the identified setting value.
摘要:
A light emitting display is configured to reduce or prevent motion blur by shortening a time that a black frame is displayed between image frames. One embodiment includes display region, a data driver, a scan driver, and a controller. The display region displays frames of images according to a data signal and a scan signal. The data driver transmits data for displaying first frames and second (black) frames between the first frames. The scan driver includes first and second scan driving circuits for transmitting scan signals, and a switch unit for selectively coupling the first and second scan driving circuits. The scan driver transmits scan signals sequentially during the first frames and transmits scan signals to at least two of the scan lines concurrently by driving the first and second scan driving circuits in parallel during the second frames. The controller transmits a driving control signal to control the switch.
摘要:
The present invention relates to a sheet type phosphor used for a light source absorbing blue/near ultraviolet light and emitting visible light, wherein the phosphor is obtained by molding a phosphor alone or a mixture of the phosphor and a light transmissive ceramic material in the shape of a sheet, a preparation method of the phosphor, and a light emitting device using the phosphor. A light emitting device for wavelength conversion manufactured by bonding the sheet type phosphor of the present invention to a light emitting device chip for emitting light from near ultraviolet to blue light induces remarkable reduction of defect rate and manufacturing cost and provides excellent thermal durability and color reproducibility as compared with a conventional light emitting device using phosphor powder. Further, the sheet type phosphor can be applied to a light source for LCD backlight, household lighting or the like.
摘要:
A brake device for elevator, including a hollow box-shaped elevator car (1) for holding the passenger or luggage; block (5) having a pair of guide rails (6) for guiding upwards and downwards the elevator car (1); a plurality of racks (4) disposed at the block (5) along the lifting direction in vertical; at least one motor (2) tooth-engaged with at least one pinion (2a) at the racks (4), for lifting upwards and downwards the elevator car (1), clutch (12) for controlling power transmission to connect a driving shaft (19) to a driven shaft (20) when the pinions (11) engaged with the racks (4) are rotated at high speed due to elevator crash; hydraulic pump (15) for generating hydraulic pressure from power transmission through a plurality of transmission gears (13) when the clutch (12) delivers rotation; and a plurality of hydraulic cylinders (17) for braking the elevator by brake pad (18) in tight coupled with the guide rails (6) by hydraulic power from the hydraulic pump (15). When fall of the elevator is detected, hydraulic pressure actuates the brake pad to brake the elevator and the brake device utilizes friction with less impact, thereby protecting the passengers or luggage from sudden impact.
摘要:
A structure of a crash pad assembly and a cowl panel assembly for a vehicle, in which a crash pad mounting clip is thermally fused with a flange of the crash pad assembly, and, at the same time, a flange of the cowl panel assembly is inserted into the crash pad mounting clip, resulting in reduction in the number of assembling steps to improve workers' job efficiency and decrease the total manufacturing cost for better quality products.
摘要:
An organic light emitting diode (OLED) display and a method for driving the same, which can display an image with more uniform luminance is disclosed. In one aspect, the OLED display includes a plurality of pixels arranged in a matrix of a plurality of rows and a plurality of columns; a data driver supplying second data signals corresponding to a second data obtained by converting a first data, in response to first data signals corresponding to the first data or a data control signal; and a compensator converting output currents output from the pixels, corresponding to the first data signals into a output voltages, and supplying, to the data driver, the data control signal for converting the first data into the second data, corresponding to the output voltages and the first data based on the output voltages and the first data.
摘要:
The present invention relates to a nozzle assembly for an injector that enables production of high quality injection products by effectively exhausting gas in a molten plastic flowing at a high speed. The present invention may include a body having a molten plastic pathway through which the molten plastic passes; a head, one end thereof being connected to the body and the other end thereof being provided with an injecting hole for injecting the molten plastic; a poppet mounted in the body, first and second plastic moving groves being formed in a length direction thereof at an exterior circumference thereof such that the molten plastic passes through the first and second plastic moving groves and gas in the molten plastic is extracted; and a first vent ring exhausting the extracted gas to the exterior of the body, the poppet being inserted in the first vent ring, wherein the molten plastic pathway is only communicated with the second plastic moving groove.