In this work, photosensitive silver paste method is applied to materialize conductive patterns as a solution for forming fine patterns of bezel of touch screen panel according to over the next display industry. Using silver nanoparticles as one dimension structure are used to synthesize with AgNO3 a...
In this work, photosensitive silver paste method is applied to materialize conductive patterns as a solution for forming fine patterns of bezel of touch screen panel according to over the next display industry. Using silver nanoparticles as one dimension structure are used to synthesize with AgNO3 and ethylenglycol as a polyhydric alcohol by polyol process. At this time, reaction time and the impact on the type of silver nanoparticles are observed by using PVP as a template. Also we formed nano scale particles by changing speed of stirring, molecular weight and concentration of injection and obtained powder after drying and discussed the characteristics. Using this powder, photosensitive silver paste was synthesized by using silver powder mixed with diameters of 20∼40nm and 300∼500nm, respectively, and a urethane acrylate binder and a photoinitiator (IRGACURE 369, 2, 4, 6 - trimethylbenzoyl diphenyl phosphine) and solvent (diethylene glycol monoethyl ether acetate). dispersibility of the paste was 1∼3㎛ and after screen printing of PET film, photolithography was followed. As a result, patterns of 20㎛ was formed. some important results are as following.
1. The polyol process was used to synthesize silver nanoparticles. Ethylene glycol was oxidized at high temperature over 160℃ to be an effective reducing agent. PVP as a template was used to control the structure of silver nanoparticles.
2. PVP as a template was used to make silver one-dimensional and then to synthesize silver nanoparticles. When the molecular weight of PVP was 10,000, it was the most efficient. When the moral ratio of AgNO3 and PVP(repeatunit) was 1:3, the most homogeneous nano particles were formed.
3. In the SEM analysis of silver nanoparticles, relatively homogeneous silver nanoparticles were synthesized by PVP and the particles were spherical and 20 to 40nm.
4. 20 to 40nm and 300 to 500nm silver nanoparticles were synthesized and powder was collected. Then, urethane acrylate binder, a photoinitiator, monomer and a solvent were used to produce photosensitive silver paste by using paste mixer and 3-roll-mill. dispersibility was 1∼3㎛.
5. When photosensitive silver paste was used to form the TSP microelectrode pattern, pre-heating was performed at 90℃ for ten minutes, UV exposure was at 300mJ/㎠ and post-heating was at 130℃ for 30minutes by using photolithography. It was confirmed that the pattern was formed up to 20㎛.
In this work, photosensitive silver paste method is applied to materialize conductive patterns as a solution for forming fine patterns of bezel of touch screen panel according to over the next display industry. Using silver nanoparticles as one dimension structure are used to synthesize with AgNO3 and ethylenglycol as a polyhydric alcohol by polyol process. At this time, reaction time and the impact on the type of silver nanoparticles are observed by using PVP as a template. Also we formed nano scale particles by changing speed of stirring, molecular weight and concentration of injection and obtained powder after drying and discussed the characteristics. Using this powder, photosensitive silver paste was synthesized by using silver powder mixed with diameters of 20∼40nm and 300∼500nm, respectively, and a urethane acrylate binder and a photoinitiator (IRGACURE 369, 2, 4, 6 - trimethylbenzoyl diphenyl phosphine) and solvent (diethylene glycol monoethyl ether acetate). dispersibility of the paste was 1∼3㎛ and after screen printing of PET film, photolithography was followed. As a result, patterns of 20㎛ was formed. some important results are as following.
1. The polyol process was used to synthesize silver nanoparticles. Ethylene glycol was oxidized at high temperature over 160℃ to be an effective reducing agent. PVP as a template was used to control the structure of silver nanoparticles.
2. PVP as a template was used to make silver one-dimensional and then to synthesize silver nanoparticles. When the molecular weight of PVP was 10,000, it was the most efficient. When the moral ratio of AgNO3 and PVP(repeatunit) was 1:3, the most homogeneous nano particles were formed.
3. In the SEM analysis of silver nanoparticles, relatively homogeneous silver nanoparticles were synthesized by PVP and the particles were spherical and 20 to 40nm.
4. 20 to 40nm and 300 to 500nm silver nanoparticles were synthesized and powder was collected. Then, urethane acrylate binder, a photoinitiator, monomer and a solvent were used to produce photosensitive silver paste by using paste mixer and 3-roll-mill. dispersibility was 1∼3㎛.
5. When photosensitive silver paste was used to form the TSP microelectrode pattern, pre-heating was performed at 90℃ for ten minutes, UV exposure was at 300mJ/㎠ and post-heating was at 130℃ for 30minutes by using photolithography. It was confirmed that the pattern was formed up to 20㎛.
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