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    • 33. 发明授权
    • Ferroelectric memory device using via etch-stop layer and method for manufacturing the same
    • 使用通过蚀刻停止层的铁电存储器件及其制造方法
    • US06909134B2
    • 2005-06-21
    • US10721689
    • 2003-11-24
    • Yoon-Jong SongKi-Nam KimSang-Woo Lee
    • Yoon-Jong SongKi-Nam KimSang-Woo Lee
    • H01L27/105H01L21/8246H01L27/115H01L27/108
    • H01L27/11502H01L27/11507
    • A ferroelectric memory device and a method for manufacturing the same. The ferroelectric memory device comprises a lower interlayer insulating layer formed on a semiconductor substrate. The ferroelectric memory device further comprises at least two adjacent ferroelectric capacitors disposed on the lower interlayer insulating layer, an interlayer insulation layer formed over the ferroelectric capacitors, leaving a top surface of the ferroelectric capacitors exposed, a patterned via etch-stop layer formed on the interlayer insulation layer, leaving the top surface of the capacitors exposed, an upper interlayer insulating layer formed on the patterned via etch-stop layer, and a plate line commonly connected to the at least two adjacent ferroelectric capacitors. Thus, integration of the ferroelectric memory device can be substantially increased.
    • 铁电存储器件及其制造方法。 铁电存储器件包括形成在半导体衬底上的下层间绝缘层。 铁电存储器件还包括设置在下层间绝缘层上的至少两个相邻的铁电电容器,形成在强电介质电容器上的层间绝缘层,留下暴露的铁电电容器的顶表面,形成在其上的图案化通孔蚀刻停止层 层间绝缘层,使电容器的顶表面暴露,形成在图案化通孔蚀刻停止层上的上层间绝缘层,以及通常连接到至少两个相邻铁电电容器的板线。 因此,可以显着增加铁电存储器件的集成。
    • 37. 发明授权
    • Electronic ballast circuit for discharge lamp
    • 放电灯电子镇流器电路
    • US5319284A
    • 1994-06-07
    • US131310
    • 1993-10-04
    • Sang-Woo Lee
    • Sang-Woo Lee
    • H05B41/298H05B37/02
    • H05B41/2988
    • An electronic ballast circuit for a discharge lamp, comprising a plurality of transistors connected in series across a DC power line, a driving circuit for alternately turning on/off the transistors and a first LC series resonance circuit connected to an output of the driving circuit, the first LC series resonance circuit having a coil and a plurality of condensers. According to the invention, the electronic ballast circuit comprises a damping circuit connected across the coil for absorbing an instantaneously excessive preheating current or a high voltage pulse. The electronic ballast circuit also comprises a plurality of impulse voltage absorbing devices connected at their one sides to an output side of the coil and at their other sides to a high frequency zero potential point of the DC power line for absorbing a contact high voltage pulse generated across the discharge lamp. The electronic ballast circuit further comprises a second LC series resonance circuit connected across the discharge lamp for enhancing a crest factor of a current flowing through the discharge lamp. Therefore, filaments of the discharge lamp are not subjected to a damage resulting from a high crest factor current or a high voltage pulse. This results in an increase in the life of the discharge lamp.
    • 一种用于放电灯的电子镇流器电路,包括串联连接在直流电源线上的多个晶体管,用于交替地导通/关闭晶体管的驱动电路和连接到驱动电路的输出的第一LC串联谐振电路, 第一LC串联谐振电路具有线圈和多个电容器。 根据本发明,电子镇流器电路包括连接在线圈两端的阻尼电路,用于吸收瞬时过大的预热电流或高电压脉冲。 电子镇流器电路还包括多个脉冲电压吸收装置,它们在其一侧连接到线圈的输出侧,并且在其另一侧连接到DC电力线的高频零电位点,用于吸收产生的接触高电压脉冲 穿过放电灯。 电子镇流器电路还包括连接在放电灯两端的第二LC串联谐振电路,用于增强流过放电灯的电流的峰值因数。 因此,放电灯的灯丝不会受到高波峰因数电流或高压脉冲的损害。 这导致放电灯的寿命增加。
    • 38. 发明授权
    • Protection circuit for stabilizer for discharge apparatus
    • 放电装置稳定器保护电路
    • US5208515A
    • 1993-05-04
    • US805485
    • 1991-12-11
    • Sang-Woo Lee
    • Sang-Woo Lee
    • H05B41/292
    • H05B41/2925Y02B20/208Y10S315/07
    • A protection circuit compatible with an electronic stabilizer of a discharge apparatus, for preventing damage to circuit elements due to an excessive voltage at the premature ignition of a discharge tube, comprises an intermittent switching circuit coupled to a thyristor for periodically turning on or off the thyristor. In the intermittent switching circuit, a first contact point of a relay switch is coupled to the cathode of the thyristor and a resistor, a condensor and a gate of a transistor are connected in parallel from a second contact point of the relay switch and a relay coil and a channel of said transistor are serially connected from the power source and a base of another transistor is coupled to a third contact point of the relay switch, said other transistor controlling the operation of a transistor which drives the discharge tube.
    • 一种与放电装置的电子稳定器兼容的保护电路,用于防止由放电管过早点火时的过大电压引起的对电路元件的损坏,包括连接到晶闸管的间歇开关电路,用于周期性地导通或关断晶闸管 。 在间歇切换电路中,继电器开关的第一接点与晶闸管的阴极耦合,并且电阻器,晶体管的电容器和栅极与继电器开关的第二接点并联连接 线圈和所述晶体管的通道从电源串联连接,另一晶体管的基极耦合到继电器开关的第三接触点,所述另一晶体管控制驱动放电管的晶体管的操作。