摘要:
This invention relates to a hemostatic member using chitosan having superior hemostatic activity, and more particularly to a chitosan-based hemostatic member for the cervix, suitable for use through insertion into an affected part upon cervical biopsy or surgery, configured to include a hemostatic pack having a projection at an upper end thereof through tying with a thread so as to form a spherical shape using chitosan nonwoven fabrics having a hemostatic function, wherein the thread contains an X-ray-sensitive material, thereby realizing effective hemostasis of the affected part upon cervical biopsy or surgery.
摘要:
This invention relates to a hemostatic member using chitosan having superior hemostatic activity, and more particularly to a chitosan-based hemostatic member for the cervix, suitable for use through insertion into an affected part upon cervical biopsy or surgery, configured to include a hemostatic pack having a projection at an upper end thereof through tying with a thread so as to form a spherical shape using chitosan nonwoven fabrics having a hemostatic function, wherein the thread contains an X-ray-sensitive material, thereby realizing effective hemostasis of the affected part upon cervical biopsy or surgery.
摘要:
The present invention relates to a switching operation control device of a power switch, an LED light emitting device including the same, and a control method thereof. The control device detects a zero crossing time when a voltage at an input end of the power switch becomes a zero voltage, generates a reference signal that is synchronized with the voltage at the input end of the power switch by using the detected zero crossing time, and compensates the generated reference signal with a first voltage that is greater than the zero voltage during a blocking period corresponding to the zero crossing time.
摘要:
Disclosed are a switch controller, a switch control method, and a converter based thereon. The switch controller generates an input sensing voltage corresponding to the input voltage of the converter, and compares the input sensing voltage with a predetermined first reference value. The switch controller generates a zero cross detection signal with a first level or a second level depending upon the comparison result, and generates a reference clock signal varying in frequency in accordance with one cycle of the zero cross detection signal. The switch controller generates digital signals by using the reference clock signal and the zero cross detection signal. The digital signals synchronize with the zero cross detection signal, and increase in accordance with the reference clock signal during a half of one cycle of the zero cross detection signal, while decreasing in accordance with the reference clock signal during the other half cycle of the zero cross detection signal. The switch controller generates a reference signal with a voltage level corresponding to the digital signal.
摘要:
A flexible ionizer uses soft X-ray and has a head unit generating soft X-ray whose wavelength is 1.2˜1.5 Å, a soft X-ray protect unit shielding the leak of the soft X-ray from the head unit, and a power control unit supplying a control signal and control voltage to the head unit. The head unit is positioned outside of the soft X-ray protect unit with the flexible ionizer further having a flexible tube protecting a high voltage cable that connects the head unit and power control unit from external impact or vibration and letting the user bend the head of the head unit at an arbitrary angle toward a charged body if necessary, a connecting device letting the ions generated at the window positioned inside of the body of the ionizer emit toward the charged body by connecting one end of the flexible tube and the head unit, and a connecting device connecting the other end of the flexible tube and the body of the ionizer. The high voltage power lines in the flexible tube are molded to prevent short circuits occurring at a near distance between the high voltage power lines and mutual induction voltages occurring. The short circuit and the mutual induction voltage are caused by the mutual influence of the high voltage lines.
摘要:
The present invention provides an over-coating composition comprising a basic compound for coating a photoresist composition to provide a vertical photoresist pattern.
摘要:
Photoresist monomers, photoresist polymers prepared thereof, and photoresist compositions using the polymer are disclosed. More specifically, photoresist polymers comprising maleimide monomer represented by Formula 1, and a composition comprising the polymer thereof are disclosed. The photoresist composition has excellent etching resistance, heat resistance and adhesiveness, and can be developed in an aqueous tetramethylammonium hydroxide (TMAH) solution. As the composition has low light absorbance at 193 nm and 157 nm wavelength, and it is suitable for a process using ultraviolet light source such as VUV (157 nm) wherein, X1, X2, R1, R2 and R3 are defined in the specification.
摘要:
The present invention provides an additive for a photoresist composition for a resist flow process. A compound of following Formula 1 having low glass transition temperature is added to a photoresist composition containing a polymer which is not suitable for the resist flow process due to its high glass transition temperature, thus improving a flow property of the photoresist composition. As a result, the photoresist composition comprising an additive of Formula 1 can be used for the resist flow process. wherein, A, B, R and R′ are as defined in the specification of the invention.
摘要:
A compound of Formula 10, an organic anti-reflective polymer having the structure of Formula 1 synthesized from the compound of Formula 1 and a preparation method thereof. An anti-reflective coating composition including the above organic anti-reflective polymer, as well as a preparation method of an anti-reflective coating. The anti-reflective coating comprising the disclosed polymer eliminates standing waves caused by the optical properties of lower layers on the wafer and by the changes in the thickness of the photoresist, prevents back reflection and also solves the problem of CD alteration cause by the diffracted and reflected light from such lower layers. Such advantages enable the formation of stable ultrafine patterns suitable for 64M, 256M, 1G, 4G, and 16G DRAM semiconductor devices and an increase of the production yields. Further, it is also possible to control the k value
摘要:
An organic anti-reflective polymer having the following Formula 1, its preparation method, an anti-reflective coating composition comprising the said organic anti-reflective polymer and a preparation method of an anti-reflective coating made therefrom. The anti-reflective coating comprising the disclosed polymer eliminates standing waves caused by the optical properties of lower layers on the wafer and by the thickness changes of the photoresist, prevents back reflection and CD alteration caused by the diffracted and reflected light from such lower layers. Such advantages enable the formation of stable ultrafine patterns suitable for 64M, 256M, 1G, 4G, and 16G DRAM semiconductor devices and improve the production yields. Further, it is also possible to control the k value and the increased hydrophobicity facilitates EBR (Edge Bead Removal).