摘要:
Provided is a prism sheet including a substrate transmitting incident light and having at least one groove inwardly formed in a surface of the substrate. A refractive member is provided in the groove and has a relatively higher refractive index than a refractive index of the substrate. A prism is arranged to face the refractive member, refract and transmit incident light, and has a relatively lower refractive index than the refractive index of the refractive member. A backlight unit is provided that includes at least one light source emitting light, along with a light guide panel that guides a procession of light emitted from the light source. The prism sheet includes at least one groove inwardly formed in a surface of the light guide panel. A refractive member is provided in the groove and a prism is arranged to face the refractive member.
摘要:
A hologram optical pick-up device using a first and second laser sources emit laser beams having different wavelengths, which are then focused by an objective lens on a disc, and reflected at a surface of the disc. The reflected laser beams are diffracted by a first hologram or a second hologram, and then received by a first photo detector or a second photo detector. Accordingly, a laser beam having an adjustable wavelength according to a thickness and a recording surface of the disc is emitted by the first laser source or the second laser source in order compensate the aberration of the laser beam due to the thickness of the disc. Thereby, the same hologram optical pick-up device can reproduce data from discs having different recording surfaces without loss of data. Also, the hologram optical pick-up can record and reproduce data on/from any disc with an increased efficiency of the laser beam.
摘要:
A display apparatus includes a display panel, a lens plate and a lens driver. The display panel includes a plurality of unit pixels. The display panel is driven by dividing a single frame into N sub frames. N is a natural number. The lens plate is on the display panel. The lens plate includes a plurality of lenses which convert a two dimensional (“2D”) image displayed on the display panel into a three dimensional (“3D”) image. The lens driver disposes the lenses at a first position during a first sub frame. The lens driver moves the lenses to a second position from the first position and disposes the lenses at the second position during a second sub frame. The second position is shifted by 1/N of a width of the unit pixel from the first position.
摘要:
There is provided a boost converter capable of reducing voltage stress within each element thereof, without using a separate loss snubber circuit, by clamping a voltage applied to an output diode to correspond to a difference between an input voltage and an output voltage. The boost converter includes a transformer including a primary winding receiving an input power and a secondary winding electromagnetically coupled to the primary winding and having a preset turn ratio therewith; a switching unit switching the input power transferred to the primary winding on and off according to a preset duty ratio; a stabilizing unit including an output diode rectifying the power outputted from the secondary winding to stabilize an output power; and a clamping unit clamping a voltage applied to the output diode to correspond to a difference between the input power and the output power during a switching on operation of the switching unit.
摘要:
An on-line system for manufacturing a dental mold is provided. In one embodiment, An on-line system for manufacturing a dental mold may comprise a user terminal configured to receive graphic data of a damaged tooth, a tooth adjacent to the damaged tooth and a tooth occluded with the damaged tooth, which are obtained by a 3D scanner, and to generate graphic data of a restoration tooth based on the received graphic data; a dental mold data management server configured to receive the graphic data of the restoration tooth from the user terminal; and one or more dental mold manufacturing apparatuses configured to receive the graphic data of the restoration tooth from the dental mold data management server and to manufacture the dental mold corresponding to the graphic data of the restoration tooth.
摘要:
A liquid crystal lens panel includes a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate includes a first base substrate and a plurality of first electrodes disposed on the first base substrate. The second substrate includes a second base substrate disposed to face the first base substrate, the second substrate further including a plurality of second electrodes disposed on the second base substrate. Each of the first base substrate and the second base substrate are rectilinearly shaped to comprise corresponding first sides and second sides, the plurality of first electrodes and the plurality of second electrodes are inclined with respect to the corresponding first sides or second sides, and the plurality of first electrodes comprise a first inclination angle different from a second inclination angle associated with the plurality of second electrodes.
摘要:
Disclosed herein are an HIF-1 inhibitor, a method for the preparation thereof, and a pharmaceutical composition comprising the same as an active ingredient. The HIF-1 inhibitor shows anticancer activity thanks to the inhibition activity against HIF-1, a transcription factor which plays an important role in the growth and metastasis of cancer, but not to general cytotoxicity. Thus, the HIF-inhibitor and a pharmaceutically acceptable salt thereof can be used as a therapeutic for various cancers such as liver cancer; stomach cancer and breast cancer. Also, the compound having inhibition activity against HIF-1 is useful in the treatment of diabetic retinopathy and arthritis, which are aggravated by HIF-1-mediated VEGF expression.
摘要:
A rechargeable battery pack including: a cell pack including at least one unit cell; a protection circuit module including a printed circuit board including a protection circuit of the cell pack; a connection member inserted in a through hole of the printed circuit board and electrically connected to the printed circuit board; and a connection tab electrically connected to the cell pack inserted into and electrically connected to the connection member.
摘要:
There is provided a boost converter capable of reducing voltage stress within each element thereof, without using a separate loss snubber circuit, by clamping a voltage applied to an output diode to correspond to a difference between an input voltage and an output voltage. The boost converter includes a transformer including a primary winding receiving an input power and a secondary winding electromagnetically coupled to the primary winding and having a preset turn ratio therewith; a switching unit switching the input power transferred to the primary winding on and off according to a preset duty ratio; a stabilizing unit including an output diode rectifying the power outputted from the secondary winding to stabilize an output power; and a clamping unit clamping a voltage applied to the output diode to correspond to a difference between the input power and the output power during a switching on operation of the switching unit.
摘要:
The present invention relates to a light emitting device (LED) driving apparatus that constantly maintains the average current flowing onto a plurality of channels. The light emitting device (LED) driving apparatus includes: a LED light source unit in which at least one LED channel is connected in parallel; at least one current detector that is disposed on a low end of a LED channel of the LED light source unit to detect the current flowing onto respective LED channels; at least one channel current controller that generates control signal controlling the average current of the channels by comparing current detected from the channels with reference wave; and a switching element that controls the average current of the LED channels in a PWM scheme according to the control signals.