BACKGROUND

1. Field of the Disclosure

The present disclosure relates to the technical field of spatial light modulators.

2. Description of Related Art

In the current level of technology, it is required for a spatial light modulator to satisfy the characteristics, such as low voltage drive, low liquid crystal response time and high electric driving frequency, so as to achieve excellent phase stability. However, with the development of science and technology, there is a demand for faster full-phase-modulation liquid crystal response time and higher panel pixel density in the application of liquid crystal on silicon spatial light modulator (LCOS-SLM). In addition, some spatial light modulators on the market are typically driven by digital driving scheme, and the phase stability thereof is relatively low in comparison with the analog driving scheme. Unfortunately, it is difficult to achieve high electric driving frequency by using an analog driving scheme on a panel with ultra-high pixel density, resulting in high difficulty in suppressing the phase temporal fluctuation. Moreover, under high-speed liquid crystal response, the analog driving scheme is not easy to achieve high phase linearity in comparison with the digital driving scheme.

Therefore, it is desirable to provide an improved spatial light modulator to mitigate and/or obviate the aforementioned problems.

SUMMARY

An object of the present disclosure is to provide a spatial light modulator, which includes a panel and a panel driver. The panel includes a backplane and a liquid crystal layer, wherein the backplane includes a pixel array with a pixel density of at least 4000 PPI, and the liquid crystal layer includes a liquid crystal material having a first figure-of-merit. The panel driver is electrically connected to the panel, so as to drive the panel according to a fast panel driving procedure design, where the first figure-of-merit satisfies a condition:

FoM⁢-⁢1=Δ⁢⁢n2(γ1k11)>15⁢⁢µm2⁢/⁢s,
where FoM-1 represents the first figure-of-merit, Δn represents a birefringence of the liquid crystal material, γ1represents a rotational viscosity coefficient of the liquid crystal material, and k11represents a splay elastic constant of the liquid crystal material.

Other objects, advantages, and novel features of the disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

