Seoul Semiconductor Co., Ltd.

Lg Display Co., Ltd.

Hyundai Wia Corporation

Youlchon Chemical Co., Ltd.

Youlchon Chemical Ltd.

Sang Min Lee

Hyuck Jung Choi

Won Il Kim

Hee Sik Han

Han Jun Kang

Jung Hwa Jung

Hyun Gu Kang

Jong Seon Kim

Ki Mock Son

Young Hee Kim

Yoon Seok Lee

Chung Hoon Lee

Do Hyung Kim

Seok Jin Kang

Ji Hee Kim

Kwang Il Park

Mi-Hae Kim

Kyung Nam Kim

Jae Ho Cho

Seung Ryeol Ryu

Sung Ho Lee

You Jin Kwon

Mi Hae Kim

Je Min Yeon

Jong Woon Yoon

Jong Hak Kim

Young Hee An

Yun Bok Lee

Woo Sic Jung

Jong Hag Kim

A cooling medium circulation apparatus for a vehicle includes: a housing having a valve mounting device with an internal space and a plurality of ports connected to a plurality of thermal management components; and a valve body rotatably mounted in the valve mounting device, partitioned into a plurality of layers vertically, with a plurality of flow paths formed in each layer, and with a plurality of circulation holes formed on outer sides corresponding to each of the flow paths and selectively matching the ports, the circulation holes elongated vertically to have a height greater than a height of the flow paths. The cooling medium circulation apparatus may be installed in the vehicle in a compact manner, while eliminating the need for multiple peripheral pipes, and facilitating the circulation of coolant across various cooling system components.

Cooling medium circulation apparatus for vehicle

Disclosed is a mobile communication terminal having a light guide plate for indicating the receipt of a signal. This mobile communication terminal comprises an upper frame. A light guide plate is mounted in the upper frame. The light guide plate has an opening corresponding to a region of an image display window. In addition, at least one LED is arranged adjacent to the light guide plate so as to introduce light into the light guide plate. Since the light guide plate is used for indicating the receipt of a signal, it is possible to provide a mobile communication terminal allowing a user to easily recognize a state where a signal has been received.

Mobile communication terminal having a light guide plate for indicating receipt of a signal

Cell packaging according to one embodiment of the present invention comprises: a base film layer; and a print layer provided beneath or on the base film layer, and including a binder resin and carbon black. The base film layer or print layer of the cell packaging is partially removed by means of laser irradiation to expose the layer under same. Therefore, according to the cell packaging of the invention, a wide range of shapes or logos, etc. can easily be externally displayed so as to be discernible by means of laser irradiation. By thus imparting discernibility and externality to the cell packaging, a labeling process for attaching a separate label to the cell packaging can be excluded.

Cell packaging material and method for manufacturing same

Disclosed is a surface protective film, a method for fabricating the same, and pouch, and a method for fabricating the same. The surface protective film includes a stack of films including a middle layer, and a first skin layer and a second skin layer on opposite sides of the middle layer, wherein at least one of the first skin layer and the second skin layer is formed of a resin having a hardness lower than a hardness of a surface to be protected by the surface protective film, and the middle layer is formed of a resin including high density polyethylene, thereby permitting protection of a display surface without formation of scratch at a very low cost compared to the related art without aging and with slip.

Surface protective film, method for fabricating the same, pouch thereof and method for fabricating the same

The present invention provides a light emitting device, comprising a first light emitting diode for emitting light in an ultraviolet wavelength region; at least one phosphor arranged around the first light emitting diode and excited by the light emitted from the first light emitting diode to emit light having a peak wavelength longer than the wavelength of the light emitted from the first light emitting diode; and at least one second light emitting diode for emitting light having a wavelength different from the peak wavelength of the light emitted from the phosphor.

Light emitting device having plural light emitting diodes and plural phosphors for emitting different wavelengths of light

A light emitting device comprises a first light emitting unit and a second light emitting unit connected in series with each other, and a PTF unit connected in parallel with the first light emitting unit and in series with the second light emitting unit. Each of the first light emitting unit and second light emitting unit comprises at least one LED. The PTF unit allows the second light emitting unit to be operated before operation of the first light emitting unit upon application of an AC voltage source. The light emitting device reduces total harmonic distortion and flickering, and improves power factor and optical efficiency. A driving circuit of the light emitting device is also disclosed.

Light emitting device and driving circuit thereof

A back lighting unit is disclosed in which lower and upper surfaces of a light transmitting plate function as incident and exit surfaces of light, respectively, and a phosphor film structure for wavelength-converting the light is provided at a position which the light is incident on or exits from. The disclosed back lighting unit includes a light emitting means including a light emitting diode disposed to emit light upwards; a light transmitting plate disposed over the light emitting diode, the light transmitting plate having a lower surface allowing light to be incident thereon and an upper surface allowing light to exit therefrom; and a phosphor film structure including a particulate phosphor and formed on at least one of the lower and upper surfaces of the light transmitting plate.

Back lighting unit having phosphor film structure

Exemplary embodiments of the present invention relate to a dimmer for a light emitting device using an alternating (AC) voltage source. The dimmer includes a switch to be switched in response to a switching control signal and to deliver an AC voltage of an AC voltage source to the light emitting device, a current detector to detect an electric current to be provided to the light emitting device and to output a current detection signal, and a controller to output the switching control signal in response to a dimming control signal and the current detection signal.

Dimmer for a light emitting device

The present invention provides a light emitting device, comprising a first light emitting diode for emitting light in an ultraviolet wavelength region; at least one phosphor arranged around the first light emitting diode and excited by the light emitted from the first light emitting diode to emit light having a peak wavelength longer than the wavelength of the light emitted from the first light emitting diode; and at least one second light emitting diode for emitting light having a wavelength different from the peak wavelength of the light emitted from the phosphor. According to the present invention, there is provided a white light emitting device, wherein using a light emitting diode for emitting light different in wavelength from light that is ex-cititively emitted from the phosphor, an excitation light source, i.e., light in the ultraviolet region for exciting the phosphor is effectively used, thereby improving energy conversion efficiency and improving reliability.

Light emitting device having plural light emitting diodes and at least one phosphor for emitting different wavelengths of light

The present invention provides a light emitting device which comprises a blue light emitting diode, and at least an orthosilicate based phosphor for emitting light ranging from a green to yellow regions and a nitride or oxynitride based phosphor for emitting light in a red region over the light emitting diode. Accordingly, since white light with a continuous spectrum ranging from green to red can be implemented, a light emitting device with improved color rendering can be provided, and the light emitting device can be used for a general illumination or a flash. Further, since the phosphors having stable chemical characteristics against their external environment such as moisture are employed, the stability in optical characteristics of the light emitting device can also be improved.

Light emitting device

Disclosed is a manufacturing method of a light emitting diode. The manufacturing method comprises the steps of preparing a substrate and mounting light emitting chips on the substrate. An intermediate plate is positioned on the substrate. The intermediate plate has through-holes for receiving the light emitting chips and grooves for connecting the through-holes to one another on its upper surface. A transfer molding process is performed with a transparent molding material by using the grooves as runners to form first molding portions filling the through-holes. Thereafter, the intermediate plate is removed, and the substrate is separated into individual light emitting diodes. Accordingly, it is possible to provide a light emitting diode in which the first molding portion formed through a transfer molding process is positioned within a region encompassed by cut surfaces of the substrate. Since the first molding portion is positioned within the region encompassed by the cut surfaces of the substrate, second molding portions can be symmetrically formed on the side surfaces of the first molding portions in various manners.

Manufacturing method of light emitting diode

Disclosed is a protective film-integrated pouch wherein a protective film to protect a display panel and a bag to cover and package the display panel are integrally formed. The protective film-integrated pouch includes a rectangular body, including upper and lower layers, the body having three sealed edges and one opened edge to define an opening, allowing insertion of a display panel into the pouch, wherein each of the upper layer and the lower layer includes a base layer made of a metallic material, an outer surface layer disposed on the base layer, and an inner surface layer disposed on the outer surface layer, wherein the inner surface layer contacts the display panel and is made of a mixed polyethylene resin.

Protective film-integrated pouch for display panel

A warm white light emitting apparatus includes a first light emitting diode (LED)-phosphor combination to generatea base light that is white or yellowish white and a second LED-phosphor combination to generate a Color Rendering Index (CRI) adjusting light. The base light the CRI adjusting light together make a warm white light having a color temperature of 2500 to 4500 K.

Warm white light emitting apparatus and back light module comprising the same

A warm white light emitting apparatus includes a first light emitting diode (LED)-phosphor combination to generate a base light that is white or yellowish white and a second LED-phosphor combination to generate a Color Rendering Index (CRI) adjusting light. The base light and the CRI adjusting light together make a warm white light having a color temperature of 2500 to 4500K.

Growing community of inventors

Ansan-si, South Korea

Sang Min Lee