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    • 22. 发明授权
    • Retractable antenna unit for a mobile phone
    • 用于移动电话的可伸缩天线单元
    • US06211828B1
    • 2001-04-03
    • US09426698
    • 1999-10-25
    • Konatantine Stanislavovich KrylovDong-Hwan KimDong-In Ha
    • Konatantine Stanislavovich KrylovDong-Hwan KimDong-In Ha
    • H01Q124
    • H01Q1/244
    • A retractable antenna unit for a mobile phone including an antenna housing provided in the casing of the mobile phone, a helical antenna installed in the antenna housing, a whip antenna having an upper end provided with a knob and a lower end provided with a stopper, the stopper being also provided with a feeder part, and a metal tube for supplementing the length of the helical antenna when the whip antenna is completely retracted into the antenna housing, or serving to extend the operational length of the whip antenna when the whip antenna is completely extended from the antenna housing, whereby the wave feed position of the whip antenna is raised when the whip antenna is completely extended from the antenna housing.
    • 一种用于移动电话的可伸缩天线单元,包括设置在移动电话机壳体中的天线壳体,安装在天线壳体中的螺旋天线,具有设置有旋钮的上端的鞭状天线和设置有止动器的下端, 止动器还设置有馈送部分,以及金属管,用于当鞭状天线完全缩回到天线壳体中时补充螺旋天线的长度,或者当鞭状天线为鞭状天线时延长鞭状天线的操作长度 从天线壳体完全延伸,由此当鞭状天线从​​天线壳体完全延伸时,鞭状天线的馈电位置被升高。
    • 23. 发明授权
    • Computer system protection device
    • 计算机系统保护装置
    • US5920264A
    • 1999-07-06
    • US480742
    • 1995-06-07
    • Dong-Hwan KimNoh-Byung ParkKwang-Yeol Lee
    • Dong-Hwan KimNoh-Byung ParkKwang-Yeol Lee
    • H05K7/20G06F1/04G06F1/20H01L23/34H01L23/467G08B17/00
    • G06F1/206H01L23/34H01L2924/0002
    • A protection device for a micro-controller chip comprising a heat sink, a cooling fan, and an overheat alarm. The heat sink is adapted to be mounted on a micro-controller chip and is capable of dissipating heat generated by the micro-controller chip. The cooling fan disperses the heat dissipated by the heat sink into the surrounding atmosphere. The overheat alarm includes a temperature sensor, a voltage comparator, an oscillator, and alarm sound generator. The temperature sensor converts a temperature of the heat sink into electrical signals and outputs a voltage proportional to the temperature of the heat sink. A voltage comparator compares the voltage output from the temperature sensor with a reference voltage signal and outputs a comparator output voltage. The oscillator generates and outputs an oscillating voltage signal. The alarm sound generator is enabled by the comparator output voltage from the voltage comparator for generating an alarm sound by operating a speaker in accordance with the input oscillating voltage signal from the oscillator.
    • 一种用于微控制器芯片的保护装置,其包括散热器,冷却风扇和过热报警器。 散热器适于安装在微控制器芯片上,并能够散发由微控制器芯片产生的热量。 冷却风扇将散热器散热的散热器分散到周围的大气中。 过热报警器包括温度传感器,电压比较器,振荡器和报警声发生器。 温度传感器将散热器的温度转换为电信号,并输出与散热器的温度成比例的电压。 电压比较器将温度传感器的电压输出与参考电压信号进行比较,并输出比较器输出电压。 振荡器产生并输出振荡电压信号。 通过来自电压比较器的比较器输出电压启用报警声音发生器,以根据来自振荡器的输入振荡电压信号操作扬声器来产生报警声音。
    • 24. 发明授权
    • Selection circuit for dual batteries in a battery powered electronic
device
    • 电池供电电子设备中双电池的选择电路
    • US5867007A
    • 1999-02-02
    • US922561
    • 1997-09-03
    • Dong-Hwan Kim
    • Dong-Hwan Kim
    • H01M10/44H01M10/48H02J7/00H01M10/46
    • H01M10/482H02J7/0024
    • A battery selection circuit for dual battery packs discharges the batteries in a stable way without regard to voltage differences. Also, if one of the batteries is installed, the battery is effectively selected to prolong battery life. When this circuit is adopted in a notebook computer, battery usage time is substantially increased. The battery selection circuit includes a battery detector for sensing the existence of the first and second battery packs and for producing the detect signals corresponding thereto. These detect signals are provided to a microcontroller to produce first and second battery discharge enable signals. In response to the first and second battery discharge enable signals, first and second electronic switches respectively connect each power supply line from the first and second batteries to a power supply circuit of the device. Reverse current blocking diodes are provided in series with the first and second switches, and a low resistive current path circuit is provided in parallel with the reverse current blocking diodes. The first switch and second switch as well as the low resistive current path circuit may include MOS FET transistors. Advantageously, a control circuit including logic gates is provided for opening the low resistive current path circuit when both the first and second batteries are detected, and for closing the corresponding low resistive current path circuit when one of the first and second batteries is detected.
    • 用于双电池组的电池选择电路以稳定的方式放电,而不考虑电压差。 此外,如果安装了其中一个电池,则可有效选择电池以延长电池寿命。 当笔记本电脑采用该电路时,电池使用时间大大增加。 电池选择电路包括用于感测第一和第二电池组的存在并用于产生与其相对应的检测信号的电池检测器。 这些检测信号被提供给微控制器以产生第一和第二电池放电使能信号。 响应于第一和第二电池放电使能信号,第一和第二电子开关分别将来自第一和第二电池的每个电源线连接到该装置的电源电路。 与第一和第二开关串联提供反向电流阻断二极管,并且与反向电流阻断二极管并联提供低电阻电流通路电路。 第一开关和第二开关以及低电阻电流路径电路可以包括MOS FET晶体管。 有利地,提供包括逻辑门的控制电路,用于在检测到第一和第二电池两者时打开低电阻电流路径电路,并且当检测到第一和第二电池之一时闭合相应的低电阻电流通路电路。
    • 27. 发明授权
    • Thin film transistor and pixel circuit having the same
    • 薄膜晶体管和具有相同的像素电路
    • US08633523B2
    • 2014-01-21
    • US13585549
    • 2012-08-14
    • Jin-Woo ParkDong-Hwan Kim
    • Jin-Woo ParkDong-Hwan Kim
    • H01L29/08H01L29/417H01L29/786G02F1/061
    • H01L29/78696G09G3/3208H01L27/0705H01L29/41733
    • A thin film transistor which may be included in a pixel circuit includes: a substrate; a semiconductor layer formed on the substrate and including a source region, a first drain region spaced apart from the source region by a first current path, and a second drain region spaced apart from the source region by a second current path having a length different from that of the first current path; a gate electrode insulated from the semiconductor layer by a gate insulating layer; a source electrode connected to the source region of the semiconductor layer; a first drain electrode connected to the first drain region of the semiconductor layer; and a second drain electrode connected to the second drain region of the semiconductor layer. Currents having different magnitudes may be simultaneously provided through the first current path and the second current path.
    • 可以包括在像素电路中的薄膜晶体管包括:衬底; 半导体层,其形成在所述基板上,并且包括源极区域,通过第一电流路径与所述源极区域间隔开的第一漏极区域和与所述源极区域间隔开的第二漏极区域,所述第二电流路径的长度不同于 第一条当前路径; 通过栅极绝缘层与半导体层绝缘的栅电极; 源极连接到半导体层的源极区; 连接到半导体层的第一漏区的第一漏电极; 以及连接到半导体层的第二漏区的第二漏电极。 可以通过第一电流路径和第二电流路径同时提供具有不同幅度的电流。
    • 30. 发明授权
    • Gate driver circuit
    • 门驱动电路
    • US07432745B2
    • 2008-10-07
    • US11218384
    • 2005-09-02
    • Jong-Tae HwangYun-Kee LeeDong-Hwan Kim
    • Jong-Tae HwangYun-Kee LeeDong-Hwan Kim
    • H03K3/00
    • H03K17/162H03K17/063H03K2217/0018
    • A high voltage gate driver circuit according to an embodiment of the present invention controls an operational range of an output signal of a level shifter to be appropriate for an operational range of a reshaper through a VIV converter. Even though the voltage range of the signal which is input from the high voltage gate driver circuit to the level shifter is different from the operational range of the reshaper, the input signal can always be recognized exactly regardless of the VTH voltage of the reshaper by controlling the operational range of the signal through the VIV converter. In addition, incorrect operation of the circuit can be prevented by erasing a common mode noise which is input with the input signal.
    • 根据本发明实施例的高电压栅极驱动器电路通过VIV转换器控制电平移位器的输出信号的操作范围,以适合于整流器的工作范围。 即使从高电压栅极驱动电路向电平移位器输入的信号的电压范围与整流器的工作范围不同,也可以总是通过控制通过整流器的VTH电压来精确地识别输入信号 通过VIV转换器的信号的工作范围。 此外,通过擦除用输入信号输入的共模噪声可以防止电路的不正确的操作。