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    • 5. 发明授权
    • APPARATUS AND METHOD FOR POLISHING A PARTIAL SECTION OF OPTICAL WAVE GUIDE IN OPTICAL PRINTED CIRCUIT BOARD
    • 光学印刷电路板光学波导指导部分抛光装置及方法
    • KR100745407B1
    • 2007-07-27
    • KR20060055576
    • 2006-06-20
    • KOREA ELECTRONICS TECHNOLOGY
    • SEO YONG GONYOON HYUNG DOIM YOUNG MINKIM MYUNG JINKIM HWE KYUNG
    • B24B29/00B24B9/00
    • B24B9/007B24B29/00
    • An apparatus and a method for polishing a partial section of an optical wave guide of an optical printed circuit board are provided to achieve improved quality of the optical wave guide by sequentially replacing wheels equipped with polishing pads. An apparatus(100) for polishing a partial section of an optical wave guide of an optical printed circuit board includes a motor(110), a wheel(120), a substrate mounting frame(130), a second rotating shaft(140), and a cam(150). The motor rotates a first rotating shaft(112). The wheel has one surface on which a polishing pad(121) is attached and the other surface coupled to a front end of the first rotating shaft. The substrate mounting frame has a surface mounted with an optical printed circuit board having a groove or a hole for exposing the partial section of the optical wave guide. The second rotating shaft is coupled onto the motor such that the second rotating shaft interlocks with the first rotating shaft. The cam is coupled to the second rotating shaft such that the substrate mounting frame horizontally reciprocates on the polishing pad.
    • 提供一种用于抛光光学印刷电路板的光波导的部分部分的装置和方法,以通过依次更换配备有抛光垫的轮来实现光波导的质量提高。 一种用于抛光光学印刷电路板的光波导的部分部分的设备(100)包括电机(110),轮(120),基板安装框架(130),第二旋转轴(140) 和凸轮(150)。 马达旋转第一旋转轴(112)。 车轮具有一个表面,抛光垫(121)被安装在该表面上,另一个表面联接到第一转轴的前端。 基板安装框架具有安装有光学印刷电路板的表面,该印刷电路板具有用于暴露光波导的部分部分的凹槽或孔。 第二旋转轴联接到马达上,使得第二旋转轴与第一旋转轴联动。 凸轮联接到第二旋转轴,使得基板安装框架在抛光垫上水平往复运动。
    • 6. 发明申请
    • HETEROGENEOUS SUBSTRATE, NITRIDE-BASED SEMICONDUCTOR DEVICE USING SAME AND MANUFACTURING METHOD THEREOF
    • 非均匀衬底,使用该衬底的氮化物基半导体器件及其制造方法
    • WO2010147357A3
    • 2011-03-03
    • PCT/KR2010003828
    • 2010-06-15
    • KOREA ELECTRONICS TECHNOLOGYHWANG SUNG MINBAIK KWANG HYEONSEO YONG GONYOON HYUNG DOPARK JAE HYOUN
    • HWANG SUNG MINBAIK KWANG HYEONSEO YONG GONYOON HYUNG DOPARK JAE HYOUN
    • H01L21/20H01L21/86
    • H01L21/0254H01L21/0237H01L21/02458H01L21/02488H01L21/02502H01L21/02639H01L33/007H01L33/22
    • The present invention relates to a heterogeneous substrate, to a nitride-based semiconductor device using the same and to a manufacturing method thereof. The present invention adjusts the mode of crystal growth to form a high quality non-polar or semi-polar nitride layer on a non-polar plane or a semi-polar plane of the heterogeneous substrate. The method according to the present invention prepares a base substrate having either a non-polar plane or a semi-polar plane, and forms a nitride-based crystal growth core layer on the plane of the prepared base substrate. A first buffer layer is grown on the crystal growth core layer such that the first buffer layer is grown faster in a vertical direction than in a horizontal direction. A horizontal growing layer is grown on the first buffer layer such that the horizontal growing layer is grown faster in a horizontal direction than in a vertical direction. Subsequently, a second buffer layer is grown on the horizontal growing layer. Here, a nitride silicon layer having a plurality of holes can be further formed between the horizontal growing layer on the first buffer layer and the second buffer layer.
    • 本发明涉及异质衬底,涉及使用其的氮化物基半导体器件及其制造方法。 本发明调整晶体生长的模式以在非均质衬底的非极性平面或半极性平面上形成高质量的非极性或半极性氮化物层。 根据本发明的方法制备具有非极性平面或半极性平面的基础衬底,并且在所制备的基础衬底的平面上形成基于氮化物的晶体生长芯层。 在晶体生长核心层上生长第一缓冲层,使得第一缓冲层在垂直方向上比在水平方向上生长得更快。 在第一缓冲层上生长水平生长层,使得水平生长层在水平方向上比在垂直方向上生长得更快。 随后,在水平生长层上生长第二缓冲层。 这里,可以在第一缓冲层上的水平生长层和第二缓冲层之间进一步形成具有多个孔的氮化硅层。
    • 7. 发明申请
    • HETEROGENEOUS SUBSTRATE, NITRIDE-BASED SEMICONDUCTOR DEVICE USING SAME AND MANUFACTURING METHOD THEREOF
    • 异质基板,基于氮化物的半导体器件及其制造方法
    • WO2010147357A2
    • 2010-12-23
    • PCT/KR2010003828
    • 2010-06-15
    • KOREA ELECTRONICS TECHNOLOGYHWANG SUNG MINBAIK KWANG HYEONSEO YONG GONYOON HYUNG DOPARK JAE HYOUN
    • HWANG SUNG MINBAIK KWANG HYEONSEO YONG GONYOON HYUNG DOPARK JAE HYOUN
    • H01L21/20H01L21/86
    • H01L21/0254H01L21/0237H01L21/02458H01L21/02488H01L21/02502H01L21/02639H01L33/007H01L33/22
    • The present invention relates to a heterogeneous substrate, to a nitride-based semiconductor device using the same and to a manufacturing method thereof. The present invention adjusts the mode of crystal growth to form a high quality non-polar or semi-polar nitride layer on a non-polar plane or a semi-polar plane of the heterogeneous substrate. The method according to the present invention prepares a base substrate having either a non-polar plane or a semi-polar plane, and forms a nitride-based crystal growth core layer on the plane of the prepared base substrate. A first buffer layer is grown on the crystal growth core layer such that the first buffer layer is grown faster in a vertical direction than in a horizontal direction. A horizontal growing layer is grown on the first buffer layer such that the horizontal growing layer is grown faster in a horizontal direction than in a vertical direction. Subsequently, a second buffer layer is grown on the horizontal growing layer. Here, a nitride silicon layer having a plurality of holes can be further formed between the horizontal growing layer on the first buffer layer and the second buffer layer.
    • 本发明涉及异质衬底,涉及使用该衬底的氮化物类半导体器件及其制造方法。 本发明调整晶体生长的模式,以在异质衬底的非极性平面或半极性平面上形成高品质的非极性或半极性氮化物层。 根据本发明的方法制备具有非极性平面或半极性平面的基底基底,并在所制备的基底的平面上形成氮化物基晶体生长核心层。 在晶体生长核心层上生长第一缓冲层,使得第一缓冲层在垂直方向上比在水平方向上生长得更快。 在第一缓冲层上生长水平生长层,使得水平生长层在水平方向上比在垂直方向上生长得更快。 随后,在水平生长层上生长第二缓冲层。 这里,可以在第一缓冲层上的水平生长层和第二缓冲层之间进一步形成具有多个孔的氮化物硅层。
    • 8. 发明申请
    • LIGHT-EMITTING DIODE DRIVING CIRCUIT AND DRIVING METHOD
    • 发光二极管驱动电路和驱动方法
    • WO2010131889A2
    • 2010-11-18
    • PCT/KR2010002986
    • 2010-05-11
    • KOREA ELECTRONICS TECHNOLOGYPARK JAE HYOUNYOON HYUNG DOHWANG SUNG MINBAIK KWANG HYEONSEO YONG GON
    • PARK JAE HYOUNYOON HYUNG DOHWANG SUNG MINBAIK KWANG HYEONSEO YONG GON
    • H05B37/02
    • H05B33/0815H05B33/0827Y02B20/347
    • The present invention relates to a light-emitting diode driving circuit and driving method for minimizing power waste that occurs when a light-emitting diode is driven using a constant current source and current deviation for each channel during multichannel driving. According to the present invention, a power supply circuit supplies an output voltage to a plurality of light-emitting diodes. A constant current source circuit inputs a drain-source current of a load transistor as a constant current value to a plurality of light-emitting diodes by controlling a gate of the load transistor using a specific bias current value so as to drive the plurality of light-emitting diodes. An error amplifier outputs a voltage value proportional to a difference between a drain-source voltage of the load transistor and a reference voltage. Moreover, a pulse-width modulation signal is generated using an output voltage value of the error amplifier, and an output voltage of the power supply circuit is controlled using the pulse-width modulation signal. At this point, the error amplifier feeds back the drain-source voltage of the load transistor to the power supply circuit in order to control an output voltage of the power supply circuit to enable the minimum drain-source voltage, used for operating the load transistor in a saturation zone, to be applied to the load transistor. Additionally, a plurality of load transistors are connected to one constant current source circuit to drive a plurality of light-emitting diodes connected in parallel, such that a multichannel light-emitting diode driving circuit is achieved to minimize current deviation for each channel.
    • 本发明涉及一种发光二极管驱动电路和驱动方法,用于在多通道驱动期间使用恒流源驱动发光二极管和每个通道的电流偏差来最小化电力浪费。 根据本发明,电源电路向多个发光二极管提供输出电压。 恒流源电路通过使用特定偏置电流值控制负载晶体管的栅极,将多个发光二极管的负载晶体管的漏极 - 源极电流输入为恒定电流值,以驱动多个发光二极管 发光二极管。 误差放大器输出与负载晶体管的漏 - 源电压和参考电压之间的差成比例的电压值。 此外,使用误差放大器的输出电压值产生脉冲宽度调制信号,并且使用脉冲宽度调制信号来控制电源电路的输出电压。 此时,误差放大器将负载晶体管的漏极 - 源极电压反馈到电源电路,以便控制电源电路的输出电压以使能用于操作负载晶体管的最小漏极 - 源极电压 在饱和区中施加到负载晶体管。 此外,多个负载晶体管连接到一个恒流源电路以驱动并联连接的多个发光二极管,使得实现多通道发光二极管驱动电路以最小化每个通道的电流偏差。