Optimization of retarder parameters for switchable privacy mode automotive displays under asymmetric viewing conditions
A switchable privacy mode (SPM) display should not be seen by a driver during driving (privacy mode), but it needs to be seen by the driver and a co-driver when a car is stopped (share mode). In this work, a SPM display was designed using a bottom twisted-nematic (TN) liquid crystal display (LCD) an...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-01-01
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| Series: | Journal of Information Display |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/15980316.2024.2374350 |
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| author | Minseo Kang Hoon-Sub Shin Jong-Min Baek Ji-Hoon Lee |
| author_facet | Minseo Kang Hoon-Sub Shin Jong-Min Baek Ji-Hoon Lee |
| author_sort | Minseo Kang |
| collection | DOAJ |
| description | A switchable privacy mode (SPM) display should not be seen by a driver during driving (privacy mode), but it needs to be seen by the driver and a co-driver when a car is stopped (share mode). In this work, a SPM display was designed using a bottom twisted-nematic (TN) liquid crystal display (LCD) and a top in-plane switching (IPS) LCD where a half-wave plate (HWP) is located between the two LCD panels. The SPM display in front of the co-driver was considered, which is seen under asymmetric viewing conditions. The orientation of the slow axis, retardation dispersion, and biaxiality of the retarder were varied to maximize the SPM’s optical performance in the driver’s and co-driver’s viewing directions. Transmittance at the driver’s viewing direction can be reduced from 4.22 to 0.03% in privacy mode by replacing the positive dispersion retarder with a negative dispersion retarder. |
| format | Article |
| id | doaj-art-20653d727e0345899cbe139425d3439f |
| institution | Kabale University |
| issn | 1598-0316 2158-1606 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Information Display |
| spelling | doaj-art-20653d727e0345899cbe139425d3439f2025-01-18T14:43:36ZengTaylor & Francis GroupJournal of Information Display1598-03162158-16062025-01-01261334410.1080/15980316.2024.2374350Optimization of retarder parameters for switchable privacy mode automotive displays under asymmetric viewing conditionsMinseo Kang0Hoon-Sub Shin1Jong-Min Baek2Ji-Hoon Lee3Future Semiconductor Convergence Technology Research Center, Division of Electronics Engineering, Jeonbuk National University, Jeonju, KoreaAuto Panel Material Development Team, LG Display, Gumi, KoreaSales Team, Sanayi System Co., Ltd., Incheon, KoreaFuture Semiconductor Convergence Technology Research Center, Division of Electronics Engineering, Jeonbuk National University, Jeonju, KoreaA switchable privacy mode (SPM) display should not be seen by a driver during driving (privacy mode), but it needs to be seen by the driver and a co-driver when a car is stopped (share mode). In this work, a SPM display was designed using a bottom twisted-nematic (TN) liquid crystal display (LCD) and a top in-plane switching (IPS) LCD where a half-wave plate (HWP) is located between the two LCD panels. The SPM display in front of the co-driver was considered, which is seen under asymmetric viewing conditions. The orientation of the slow axis, retardation dispersion, and biaxiality of the retarder were varied to maximize the SPM’s optical performance in the driver’s and co-driver’s viewing directions. Transmittance at the driver’s viewing direction can be reduced from 4.22 to 0.03% in privacy mode by replacing the positive dispersion retarder with a negative dispersion retarder.https://www.tandfonline.com/doi/10.1080/15980316.2024.2374350Switchable privacy mode displayautomotive displayasymmetric viewing anglenegative dispersion retarderNZ coefficient |
| spellingShingle | Minseo Kang Hoon-Sub Shin Jong-Min Baek Ji-Hoon Lee Optimization of retarder parameters for switchable privacy mode automotive displays under asymmetric viewing conditions Journal of Information Display Switchable privacy mode display automotive display asymmetric viewing angle negative dispersion retarder NZ coefficient |
| title | Optimization of retarder parameters for switchable privacy mode automotive displays under asymmetric viewing conditions |
| title_full | Optimization of retarder parameters for switchable privacy mode automotive displays under asymmetric viewing conditions |
| title_fullStr | Optimization of retarder parameters for switchable privacy mode automotive displays under asymmetric viewing conditions |
| title_full_unstemmed | Optimization of retarder parameters for switchable privacy mode automotive displays under asymmetric viewing conditions |
| title_short | Optimization of retarder parameters for switchable privacy mode automotive displays under asymmetric viewing conditions |
| title_sort | optimization of retarder parameters for switchable privacy mode automotive displays under asymmetric viewing conditions |
| topic | Switchable privacy mode display automotive display asymmetric viewing angle negative dispersion retarder NZ coefficient |
| url | https://www.tandfonline.com/doi/10.1080/15980316.2024.2374350 |
| work_keys_str_mv | AT minseokang optimizationofretarderparametersforswitchableprivacymodeautomotivedisplaysunderasymmetricviewingconditions AT hoonsubshin optimizationofretarderparametersforswitchableprivacymodeautomotivedisplaysunderasymmetricviewingconditions AT jongminbaek optimizationofretarderparametersforswitchableprivacymodeautomotivedisplaysunderasymmetricviewingconditions AT jihoonlee optimizationofretarderparametersforswitchableprivacymodeautomotivedisplaysunderasymmetricviewingconditions |