Optical filter for ambient light sensor, ambient light sensor, and electronic device
A technology of ambient light sensor and optical filter, which is applied in the field of ambient light sensor, can solve problems such as reduced incident light, difficulty in detecting accurate illuminance or misoperation of color tone, increased addition of near-infrared absorbing particles, etc., to reduce warping or the effect of small strain and incident angle dependence
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[0437] Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to these Examples at all. In addition, unless otherwise indicated, "part" means a "weight part". In addition, the measurement method of each physical property value and the evaluation method of a physical property are as follows.
[0438]
[0439] The molecular weight of the resin is measured by the following method (a) or (b) in consideration of the solubility of each resin in a solvent and the like.
[0440] (a) Gel Permeation Chromatography (GPC) device (150C type, column: H type column produced by Tosoh (Tosoh) Company, developing solvent: o-dichlorobenzene) manufactured by Waters (WATERS) Company, The weight average molecular weight (Mw) and the number average molecular weight (Mn) of standard polystyrene conversion were measured.
[0441] (b) Using a GPC device manufactured by Tosoh Corporation (HLC-8220 type, column: TSKgelα-M, developing solvent: tetra...
Synthetic example 1
[0458] In a 3L four-necked flask, add 35.12g (0.253mol) of 2,6-difluorobenzonitrile, 87.60g (0.250mol) of 9,9-bis(4-hydroxyphenyl)fluorene, 41.46g (0.300 mol) of potassium carbonate, 443 g of N,N-dimethylacetamide (hereinafter also referred to as "DMAc"), and 111 g of toluene. Next, a thermometer, a stirrer, a three-way cock with a nitrogen inlet tube, a Dean-Stark tube, and a cooling tube were installed in the four-necked flask. Next, the inside of the flask was replaced with nitrogen, and the obtained solution was reacted at 140° C. for 3 hours, and the generated water was removed from the Dean-Stark tube as needed. When the generation of water was not observed, the temperature was gradually increased to 160° C., and the reaction was carried out at the temperature for 6 hours. After cooling to room temperature (25 degreeC), the produced|generated salt was removed with filter paper, the filtrate was poured into methanol and reprecipitated, and the filtrate (residue) was sepa...
Synthetic example 2
[0460] The 8-methyl-8-methoxycarbonyltetracyclo[4.4.0.1 represented by the following formula (8) 2,5 .1 7,10 ] 100 parts of dodec-3-ene (hereinafter also referred to as "DNM"), 18 parts of 1-hexene (molecular weight modifier) and 300 parts of toluene (solvent for ring-opening polymerization reaction) are charged into a reaction vessel replaced with nitrogen , and the solution was heated to 80°C. Then, 0.2 parts of a toluene solution (0.6 mol / liter) of triethylaluminum as a polymerization catalyst and a toluene solution (concentration of 0.025 mol / liter) of methanol-modified tungsten hexachloride were added to the solution in the reaction vessel 0.9 parts, and the solution was heated and stirred at 80° C. for 3 hours to perform a ring-opening polymerization reaction to obtain a ring-opening polymer solution. The polymerization conversion rate in the polymerization reaction was 97%.
[0461] [chem 21]
[0462]
[0463] 1,000 parts of the ring-opening polymer solution ob...
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