Piezoelectric touch control film and piezoelectric touch display panel comprising same
A technology of touch film and piezoelectric film, applied in piezoelectric/electrostrictive/magnetostrictive devices, piezoelectric/electrostrictive device manufacturing/assembly, circuits, etc., can solve expensive, time-consuming, transparent low performance and other problems, to achieve the effect of precise and adjustable thickness, simple and fast method, and improved utilization rate
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Embodiment 1
[0047] This embodiment relates to a method for rapidly preparing a polyvinylidene fluoride piezoelectric touch film with a high content of β-phase by using a knife coating method.
[0048] The piezoelectric touch film includes a transparent flexible substrate, a metal electrode, and a β-phase vinylidene fluoride piezoelectric film that are arranged in sequence. The piezoelectric film includes β-phase PVDF and dabcoHReO 4 , β-phase PVDF accounts for 80% of the mass of the piezoelectric film.
[0049] The specific steps of the preparation method of the piezoelectric touch film are as follows:
[0050] 1) Dissolve 0.552g PVDF powder in 10mL N,N-dimethylformamide / acetone (DMF / Ac) mixed solvent, stir mechanically, then add 0.048gdabcoHReO 4 , continue to stir under heating conditions to obtain dabcoHReO 4 -PVDF mixed solution.
[0051] 2) Set the substrate temperature to room temperature (25°C), set the scraping speed to 10mm / s, and the distance between the scraper and the subst...
Embodiment 2
[0053] The piezoelectric touch film was prepared according to the method of Example 1, except that in step 2), the temperature of the substrate was set to 40°C.
Embodiment 3
[0055] The piezoelectric touch film was prepared according to the method of Example 1, except that in step 2), the substrate temperature was set to 50°C.
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