# HKC Co Ltd — Patents explained on PatentBrief

HKC Co Ltd has 1 landmark patent explained in plain English on PatentBrief.

- [How Foldable Screens Use Electrochromic Layers to Improve Color and Contrast](https://patentbrief.org/patent/us/12354567/sea-level-raptor) — granted 2025
  A method for foldable display panels to adjust their light-filtering properties using electrochromic layers that change color or opacity based on whether the screen is stretched or folded.

**Full profile:** https://patentbrief.org/company/hkc-co-ltd

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._