Light emitting display panel and light emitting display device including the same
US12156456B2 · kind B2 · utility
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25Claims
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Key dates
| Filing date | Nov 12, 2021 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Feb 3, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/8722
Abstract
A light emitting display panel includes a first emission area, a second emission area, and a third emission area spaced apart from each other and emitting different colors of light and a photochromic layer surrounding each of the first, second, and third emission areas and disposed in a non-emission area. When the first emission area, the second emission area, and the third emission area emit light, the photochromic layer is in a transparent state. When light of a wavelength band shorter than visible light is incident on the photochromic layer, the photochromic layer is in an opaque state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.