Due to its high color performance, high light efficiency, low carbon environmental protection and energy saving, a large number of LCD TVs on the market are beginning to use LEDs as backlights. However, due to the variability of LED white light synthesis, many packagers' technicians are not well aware of how to choose a phosphor solution that matches the LCD under the known color gamut coverage requirements. At the same time, due to the different LCDs of various TV manufacturers, the technicians of the package manufacturers need to perform multiple and long-term package verification on the phosphor solution that meets the requirements of color gamut coverage and matches the LCD. This paper mainly explains and analyzes the conversion relationship between CF and white LED in LCD, the calculation method of color gamut coverage and how to choose the phosphor matching with CF in LCD under the requirement of known color gamut coverage. For reference by the packaging technician.
Article outline:
1 LCD TV and gamut coverage related instructions 1.1 LCD TV introduction 1.2 LCD construction and imaging principles 1.2.1 LCD structure 1.2.2 LCD imaging principle 1.2.3 LCD TV backlight introduction 1.3 gamut coverage Rate 1.3.1 Color Gain Coverage Meaning 1.3.2 Color Gain Coverage Standard 1.4 Factors Affecting Color Gamut Coverage 1.4.1 Introduction to White LEDs 1.4.2 Introduction to CF 1.5 Calculation of Color Gamut Coverage 1.5.1 LED white light calculation three single Spectra 1.5.2 Three single
Calculate color gamut coverage by color coordinate values ​​of the spectrum
2 Color gamut coverage and selection of phosphor scheme 2.1 Characteristics of different system phosphors 2.2 Color gamut coverage and selection of phosphor schemes 2.3 Case description of different gamut coverage requirements and phosphor schemes
3 Conclusion
This paper briefly introduces LCD TV and CF and white LED which affect the gamut coverage. It also explains the conversion relationship between CF and white LED in LCD and the calculation method of color gamut coverage. At the same time, it covers different color gamut with examples. A brief introduction to the phosphor scheme for backlighting white LEDs is given. For details of the article, please click to view the PDF document!
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