Patent application number | Description | Published |
20080284926 | Liquid Crystal Display Device - A liquid crystal display device is provided with a liquid crystal display panel ( | 11-20-2008 |
20090135334 | DISPLAY APPARATUS - The present invention is directed to the provision of a high-contrast display apparatus. The display apparatus of the present invention includes a light source, a display section having an electro-optical conversion device for transmitting or scattering light introduced from the light source, light control means for reflecting the light introduced from the light source at a prescribed reflection angle, and a light reflecting member for causing the light reflected by the light control means and transmitted through the electro-optical conversion device to be reflected outside the field of view of a viewer who is viewing the display section straight on. | 05-28-2009 |
20130221864 | LED LIGHTING CIRCUIT, LED ILLUMINATION DEVICE, AND LED ILLUMINATION UNIT SOCKET - The purpose of the present invention is to provide an LED lighting circuit, which can normally light an LED even if an alternating current power supply is an electronic transformer, an LED illuminating device, and a socket for an LED illuminating unit. Disclosed is an LED lighting circuit includes a rectifier circuit for rectifying an AC output from an AC power supply, an LED drive unit, which drives the LED by having rectifying output inputted thereto from the rectifying circuit, a reverse current preventing unit, which is provided between the rectifying circuit and the LED drive unit, and a terminal voltage control unit, which reduces the output terminal voltage of the rectifying circuit in the case where the alternating current output from the alternating current power supply is unstable or stopped. Also provided are an LED illuminating device, and a socket for an LED illuminating unit. | 08-29-2013 |
20130234609 | LED LIGHTING DEVICE - When a pulsating current is applied to an LED string included in an LED lighting device, and the number of LEDs caused to light up is changed, the LED lighting device is in efficient, since there are LEDs lighting up for a long period of time and LEDs lighting up only for a short period of time. The LED string includes LED string | 09-12-2013 |
20140361695 | LED LIGHTING DEVICE - The purpose of the invention is to obtain, with a simple circuit configuration, an LED illumination device having an LED column driven by a pulsating voltage, capable of lighting with little flicker, and also having lighting control capability. The LED illumination device ( | 12-11-2014 |
20140367710 | LED MODULE - The purpose of the present invention is to reduce the size and thickness of an LED module in which a plurality of LED dies along with other electronic components are mounted on a circuit board, and at the same time to stabilize the operation of the module with respect to source voltage fluctuation. The LED module includes: a circuit board; a plurality of LED dies that are mounted on one surface of a circuit board as bare chips and constitute a series circuit; an FET die that is mounted on the one surface of a circuit board as bare chips and controls a current flowing through the plurality of LED dies; and a constant current circuit that is mounted on the one surface of a circuit board and is series-connected to the series circuit. The constant current circuit includes the FET die. | 12-18-2014 |
20150115810 | LED DRIVE CIRCUIT - An LED drive circuit includes: a rectifier circuit that outputs a full-wave rectification waveform voltage; a primary LED row that includes a first partial LED row and a second partial LED row; an auxiliary LED row-; a bypass circuit that is connected to part connecting the first partial LED row and the second partial LED row and that returns current from the first partial LED row to the rectifier circuit; and a current limiting circuit that limits the current flowing through the auxiliary LED row wherein the primary LED row and the auxiliary LED row are connected in parallel to the rectifier circuit; and the bypass circuit blocks the current passing through the bypass circuit in accordance with the current flowing through the primary LED row, and controls and blocks the current flowing through the auxiliary LED row. | 04-30-2015 |
20150124455 | LED MODULE - Provided is an LED module that can be easily manufactured while maintaining good reflective characteristics even when a plurality of LED elements and other electronic components are packaged on a circuit substrate. This LED module is characterized by having: a sub-mounting substrate for packaging a plurality of LED elements; a module substrate for packaging an electronic component other than the plurality of LED elements, the sub-mounting substrate being mounted on the module substrate; a dam material disposed on the module substrate and surrounding a mounting part of the sub-mounting substrate; and a cover member for covering top faces of the plurality of LED elements, the cover member being filled into an inside region of the dam material; the reflectance of a surface of the sub-mounting substrate being set higher than the reflectance of a surface of the module substrate. | 05-07-2015 |