CREATE TABLE "hitachi_ips_technology_development" (
  "name" text,
  "nickname" text,
  "year" real,
  "advantage" text,
  "transmittance_contrast_ratio" text
);

Question: What is Ips-provectus transmittance/contrast ratio?
SQL: SELECT "transmittance_contrast_ratio" FROM "hitachi_ips_technology_development" WHERE "name"='ips-provectus';