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An Experimental Study on Color Shift of Injection-Molded Mobile LGP Depending on Surface Micropattern
| Content Provider | MDPI |
|---|---|
| Author | Kim, Mooyeon Lee, Junhan Yoon, Kyunghwan |
| Copyright Year | 2020 |
| Abstract | In the display industry, the LCD backlight unit (BLU) module is variously used in mobile phones, notebook computers, monitors, and TVs. The light guide plate (LGP), which is one of the core parts of a BLU, is getting bigger and thinner consistently. Conventional injection methods and injection processes like injection compression molding (ICM) are becoming more complex and harsher with high-speed injection at high mold and melt temperatures. These approaches lead to a change in physical properties and a decrease in optical properties such as yellowing and color shift in injection-molded parts. In the present study, an injection molding experiment was conducted to understand the effect of surface patterns and major injection process conditions like mold and melt temperatures on the color shift in injection-molded mobile LGP. Optical properties obtained by the direct and total transmittance and CIE xy chromaticity diagram for injection-molded mobile LGP were measured with a UV–visible spectrophotometer. From the measurement of patternless LGP, it was found that total or direct transmittance was not affected by molding process variables. It was also found that yellow shift, |
| Starting Page | 2610 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym12112610 |
| Journal | Polymers |
| Issue Number | 11 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-11-06 |
| Access Restriction | Open |
| Subject Keyword | Polymers Manufacturing Engineering Injection Molding Lgp Cie Xy Direct Transmittance Total Transmittance Color Shift Surface Micropattern Scattering Yellow Shift |
| Content Type | Text |
| Resource Type | Article |
