Laser display technologies and their applications

Yamamoto, Kazuhisa

doi:10.1515/aot-2012-0059

Cited by 23 publications

(8 citation statements)

References 14 publications

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“…As a result, with the current development of the OLED display technology, its application in automotive HUD is limited. LSD has a great potential for automotive HUD application since it shares some of the advantages of DMD and LCoS such as low power consumption, small volume and high display brightness [136]- [138]. Besides it does not suffer from background glow issue.…”

Section: Automotive Head-up Display (Hud) Reviewmentioning

confidence: 99%

Development of electrostatic actuators with large out-of-plane deflection and its application in scanning display

Chen¹

2021

Preprint

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Electrostatic out-of-plane microactuators have been widely used in applications of variable capacitors, optical attenuators, optical switches and scanning displays due to their small size, low cost, simple and diverse structure, low power consumption and high compatibility with semiconductor process. The large out-of-plane displacement of the microactuator with high reliability is preferred in order to increase the tuning range, tunability and the display size. However, the “pull-in” instability associated with conventional attractive-force electrostatic microactuators significantly limits the out-of-plane displacement and lowers the operation stability. A repulsive-force microactuator has been previously developed which can achieve large out-of-plane rotation and does not suffer from the “pull-in” instability. However, a larger rotation angle of the repulsive-force actuator is highly desired in order to improve its performance in the applications such as increasing the tunability and the scanning angle. In this thesis two novel repulsive-force actuators, i.e., two-row interdigitating-finger and two-width-finger (TWF) actuators are developed which output much larger out-of-plane rotation than the previous repulsive-force actuator without suffering from the “pull-in” instability. The mathematical models are established for both actuators using a hybrid approach. The actuators require only two thin layers and are suitable for surface micromachining process. The measured results show that the two microactuators can achieve rotation angles of 11.5° and 7.5° at 150 V respectively. The improvements are 100% and 35% in comparison to the previous repulsive-force actuator with the same size, stiffness and driving voltage. A 2D scanning micromirror has been developed and fabricated based on the two-row-finger (TRF) actuator. Experimental results show the micromirror has larger rotation angle and faster response speed than those of the micromirror driven by the previous repulsive-force microactuator. The vector scanning display based on the micromirror is demonstrated. An advanced display approach is developed to generate displays with less distortion and higher refreshing rate compared to the previous generic display approach. The automotive Head-up Display (HUD) based on the micromirror and advanced display approach has been constructed for both real and virtual image configurations, which has advantages of small size, low cost, large viewing angle and good visibility over those HUDs in the market.

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Section: Automotive Head-up Display (Hud) Reviewmentioning

confidence: 99%

Development of electrostatic actuators with large out-of-plane deflection and its application in scanning display

Chen¹

2021

Preprint

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“…In recent years, more and more displays are adopting lasers to make use of their unique benefits such as high color reproducibility, enhanced energy efficiency and small size [1]. As the use of lasers is growing in displays, the demand for precise measurement of their chromaticity and photometric quantity is rising in order for manufacturers to ensure display quality.…”

Section: Introductionmentioning

confidence: 99%

P‐15.1: A New Photometric and Colorimetric Measurement Method for RGB Laser Displays

Hieda¹,

Maruyama²,

Narusawa³

2019

Symp Digest of Tech Papers

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“…Currently, more and more displays such as head up displays (HUD) and head mount displays (HMD) are employing lasers to make use of their high color reproducibility, enhanced energy efficiency and small size. [1]. As laser displays are becoming more common, the demand for accurate measurement of their chromaticity and photometric quantity is also rising.…”

Section: Introductionmentioning

confidence: 99%

P‐15.2: A Study for Easy and Quick White Balance Adjustment in Laser Display Production

Hieda¹,

Maruyama²,

Narusawa³

2019

Symp Digest of Tech Papers

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Laser display technologies and their applications

Cited by 23 publications

References 14 publications

Development of electrostatic actuators with large out-of-plane deflection and its application in scanning display

Development of electrostatic actuators with large out-of-plane deflection and its application in scanning display

P‐15.1: A New Photometric and Colorimetric Measurement Method for RGB Laser Displays

P‐15.2: A Study for Easy and Quick White Balance Adjustment in Laser Display Production

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