| Panasonic Electric Works SUNX Co., Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110122650 | Backlight unit and display device using same - A backlight unit arranged at the rear side of a liquid crystal panel for illuminating the liquid crystal panel. The backlight unit includes a light source for emitting light and a light guide plate. The light guide plate includes a light incident surface on which the light emitted from the light source is incident, a main reflection surface for internally reflecting the light incident on the light incident surface and a light launching surface from which the light reflected by the main reflection surface is launched toward the liquid crystal panel. The backlight unit further includes a frame for supporting the light guide plate and a substrate arranged at the opposite side of the frame from the liquid crystal panel and mounted with electronic parts. The light source is mounted to the substrate. | 05-26-2011 |
| 20110121210 | Digital output circuit - A digital output circuit includes a photocoupler, having one light emitting diode and one phototransistor, for transmitting a digital voltage output signal to the load; an output transistor, having a control terminal, a first terminal and second terminals, for transmitting an output signal from the phototransistor to the load; and a voltage smoothing unit. Further, a first terminal of the phototransistor is connected to a power supply terminal via a first resistor and a second terminal of the phototransistor is connected to the control terminal of the output transistor. A second resistor is connected between the control terminal and the first terminal of the output transistor. The first terminal of the output transistor is connected to the common terminal and the second terminal of the output transistor is connected to the output terminal. The voltage smoothing unit is connected between the first terminal of the phototransistor and the common terminal. | 05-26-2011 |
| 20110114858 | Digital input circuit - A digital input circuit includes a pair of input terminals that an input signal of a digital voltage signal is inputted; a photocoupler for transmitting the input signal from the input terminals to an input port of a microcomputer and having one light emitting diode and one phototransistor, wherein the light emitting diode of the photocoupler is connected between the input terminals, a collector of the phototransistor is connected to a positive side of a power supply, and an emitter of the phototransistor is connected to ground via a first resistor; and a bipolar transistor provided between the ground and a second resistor, wherein a collector thereof is connected to the second resistor for pulling up the input port of the microcomputer, an emitter thereof is connected to the ground, and a base thereof is connected to a connection node between the emitter of the phototransistor and the first resistor. | 05-19-2011 |
