18‐2: Improvement of the Light Leakage of HUD System. Issue 1 (25th September 2020)

• Record Type: Journal Article
• Authors: Kamoshida, Kenta; Tadauchi, Ryo; Shimada, Takashi; Ogura, Kenji; Murata, Mitsuhiro
• Is Part Of: Digest of technical papers. Volume 51:Issue 1(2020)
• Page Start: 250
• Page End: 253
• Publication Date: 2020-09-25
• Subjects: LCD(Liquid Crystal Display) -- HUD(Head Up Display) -- Light Leakage -- Photo-elastic effect -- Birefringence -- Polarizer; Information display systems -- Congresses; 621.3815422
• DOI: 10.1002/sdtp.13851
• Languages: English
• ISSNs: 0097-966X

Abstract

Abstract : 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.