18‐2: Improvement of the Light Leakage of HUD System

18‐2: Improvement of the Light Leakage of HUD System

When a large backlight of high luminance is used for HUD, light leakage might occur at the corner of LCD. The detailed analysis found that photo‐elastic effect of glass and its birefringence leads to the light leakage. Also it was found that the uneven distribution of the temperature on the polarize...

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Veröffentlicht in:SID International Symposium Digest of technical papers 2020-08, Vol.51 (1), p.250-253
Hauptverfasser: Kamoshida, Kenta, Tadauchi, Ryo, Shimada, Takashi, Ogura, Kenji, Murata, Mitsuhiro
Format: Artikel
Sprache:eng
Schlagworte:
Birefringence
Head-up displays
HUD(Head Up Display)
LCD(Liquid Crystal Display)
Leakage
Light Leakage
Photo-elastic effect
Polarizer
Polarizers
Substrates
Sunglasses
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Beschreibung
Zusammenfassung:When a large backlight of high luminance is used for HUD, light leakage might occur at the corner of LCD. The detailed analysis found that photo‐elastic effect of glass and its birefringence leads to the light leakage. Also it was found that the uneven distribution of the temperature on the polarizer could be the root cause of the shrinkage. Proper introduction of wire‐grid substrate can be an effective countermeasure to improve the light leakage.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.13851