摘要:
There are provided a printed circuit board connector for a backlight unit and a chassis using the same. The printed circuit board connector for a backlight unit including: a horizontal supporter; a vertical supporter having one end connected to the horizontal supporter to divide the horizontal supporter into first and second areas; at least one connecting terminal formed on the horizontal supporter to be partially exposed in each of the first and second areas of the horizontal supporter, wherein the connecting terminal electrically connects printed circuit boards having one ends placed on the first and second areas, respectively.
摘要:
There are provided a printed circuit board connector for a backlight unit and a chassis using the same. The printed circuit board connector for a backlight unit including: a horizontal supporter; a vertical supporter having one end connected to the horizontal supporter to divide the horizontal supporter into first and second areas; at least one connecting terminal formed on the horizontal supporter to be partially exposed in each of the first and second areas of the horizontal supporter, wherein the connecting terminal electrically connects printed circuit boards having one ends placed on the first and second areas, respectively.
摘要:
A direct-illumination backlight apparatus using LEDs includes a flat reflective plate, an LED light source, a transparent plate, a scattering pattern, and a light guide. The light guide serves to introduce a partial light from an LED light source at such an angle that the partial light is trapped inside the transparent plate, and the scattering pattern serves to scatter the trapped light beam at a position directly above the LED light source so that the scattered light beam escapes out of the transparent plate toward an LCD panel.
摘要:
In a backlight apparatus used in an LCD, in which upper and lower reflective plates are installed under upper and lower transparent plates, respectively. The lower transparent plates and the lower reflective plates introduce light generated by lower light sources in upward directions and the upper transparent plate and the upper reflective plates introduce light generated by an upper light source into those areas, which are not lighted by the lower light sources. This can prevent the formation of dark areas above the lower light sources thereby enhancing the overall uniformity of light.
摘要:
A backlight unit of a liquid crystal display includes a plurality of light emitting diode packages arranged in a matrix while being spaced a uniform distance apart from each other. Each light emitting diode package includes one or more light emitting diode chips and is structured such that light generated from the light emitting chips is emitted in the horizontal direction. A reflector consists of a plurality of reflection cells connected to each other in a matrix. Each of the reflection cells of a unit size has each of the light generating packages positioned at the center thereof, and reflects the light, emitted from the light emitting diode at the center thereof in the horizontal direction, in the vertical direction.
摘要:
The LED package includes a substrate, one LED or more separated from each other by designated intervals and arranged in a line on the substrate, and a molding portion, for sealing the upper surface of the substrate including the LEDs, provided with an upper surface including two curved surfaces having circular circumferential shapes, wherein each of the curved surfaces has a curvature for totally reflecting light emitted from the LEDs. The LED package assures a sufficient optical traveling route therein without requiring a separate light guide plate, thereby emitting a white ray having uniform luminance.
摘要:
An LCD backlight apparatus includes a light guide plate placed under an LCD panel of the LCD to guide light to the LCD panel. The light guide plate has an even upper surface and a scattering pattern formed in a bottom surface. A plurality of monochromatic light sources are placed in line at a side of the light guide plate to radiate light along the plane direction of the light guide plate between the upper and bottom surfaces of the light guide plate. The light sources are adapted to radiate light beams at a predetermined beam angle so that the light beams reach the scattering pattern only after having propagated a predetermined reference length necessary for forming white light when mixed together. The LCD backlight apparatus can reduce the Bezel width without increasing the thickness of the LCD.
摘要:
A multi-lens LED has multiple lenses and an intermediate layer interposed between the multiple lenses in order to radiate light emitted from an LED chip in a desired direction and/or at a desired beam angle. The first lens is centered behind the LED chip when seen in the propagation direction of light. The second lens has a concave structure and surrounds the first lens. The intermediate layer is interposed between the first and second lenses, so that light emitted from the LED chip can be radiated at a wide beam angle. When provided in the form of a hemisphere, the multi-lens LED can be attached, e.g., to a wall or a ceiling for interior lighting. On the other hand, when provided in the form of a semicylinder, the multi-lens LEDs can be arranged in arrays to be used, e.g., as a light source of an LCD backlight apparatus.
摘要:
The present invention relates to an LED lens, in which a planar bottom has a pair of halves symmetrically connected with each other about a reference line and narrowed in the vicinity of the reference line. A pair of substantially semicircular reflecting surfaces are extended from both edges of the bottom connected with both ends of the reference line. A radiating surface is connected with remaining edges of the bottom and semicircular edges of the reflecting surfaces. The reflecting surfaces reflect light beams are introduced from the LED chip through the bottom toward the radiating surface. The radiating surface radiates the light beams to the outside when the light beams are introduced to the radiating surface through reflection from the reflecting surfaces and directly through the bottom, so that the light beams are radiated to the outside in a predetermined beam angle.
摘要:
An LED package frame includes an LED chip and a heat conductive member made of high heat conductivity material. The heat conductive member has a receiving part at a lateral portion, and is mounted with the LED chip. A lead-coating assembly configured to be inserted into the receiving part of the heat conductive member, including a lead is inserted at one end into the receiving part of the heat conductive member, and electrically connected to the LED chip. An electrically insulating layer is placed in tight contact between the lead and the receiving part of the heat conductive member isolates the lead from the receiving part. With the lead inserted into the heat conductive member, it is possible to reduce size while maintaining high heat conductivity and stability.