WiMi Developed a Liquid Crystal on Silicon (LCoS) Technology Solution
- WiMi's LCoS technology for AR displays is expected to bring higher performance, better user experience, and a wider range of applications to augmented reality technology.
- The technology enables users to experience a more realistic overlay of virtual information, resulting in a more realistic, brighter, and clearer display in AR.
- LCoS technology has lowered the threshold of the AR market, attracting more manufacturers and developers and driving continuous innovation and development of the technology.
- LCoS technology faces technical problems in practice, such as the edge field effect, which can lead to a degradation of display performance. Solving this problem is a key prerequisite for the development of LCoS.
- Solving the problem of the edge field effect requires innovative solutions, including optimizing the pixel structure, adjusting the pre-tilt angle of the liquid crystal, and improving the phase modulation algorithm.
Liquid crystals are optically responsive substances whose molecular arrangement can be altered by an electric field. Liquid crystal displays (LCDs) employ liquid crystals as optical switches to modulate the degree of light transmission by controlling the electric field, thus enabling the control of pixel points. This provides the basis for the development of LCoS. With the rapid development of semiconductor and integrated circuit technology, complementary metal oxide semiconductor (CMOS) technology has emerged in the semiconductor industry. CMOS has the advantages of low power consumption, high integration, and cost-effectiveness, which makes it a highly suitable backplane technology for optoelectronic devices. Advances in CMOS have provided a highly integrative backplane platform for the development of LCoS, which has improved the LCoS performance.
WiMi's LCoS technology for AR displays creatively combines liquid crystals with semiconductor substrates to realize optically addressable liquid crystal light valves. WiMi has developed a principle of LCoS technology for AR displays whereby liquid crystals can be used for optical addressability, which means that light can be propagated multiple times through the liquid crystal layer, each time modulating the phase or polarization state, providing a direction for realizing high resolution, high-performance optical valves. The rise of LCoS technology is closely related to the needs of the high-resolution and holographic imaging fields. High-resolution displays and imaging are critical for applications such as AR, virtual reality (VR), and head-mounted displays (HMDs).
However, LCoS technology faces several technical problems in practice, one of the main ones being the edge field effect, which can lead to a degradation of display performance. The performance of edge pixels tends to be less stable than that of center pixels, which can degrade the display quality. Therefore, solving this problem becomes a key prerequisite for the development of LCoS. In order to solve the problem of the edge field effect, WiMi proposes innovative solutions, including optimizing the pixel structure, adjusting the pre-tilt angle of the liquid crystal and improving the phase modulation algorithm. The technique divides the pixel area into two zones with a border width based on an initially determined phase delay curve. By this method, the pre-tilt angles of the inner and outer regions are optimized, thereby reducing the overall phase delay error. The goal of this optimization process is to achieve more accurate phase modulation, resulting in improved image quality and display performance. In addition, this approach makes it possible to design pre-tilt angle patterns with opposite characteristics, thus providing greater flexibility for different applications.
Panel composition of WiMi's LCoS technology for AR displays:
Liquid crystal(LC): The liquid crystal is the core component of LCoS, which is composed of liquid crystal molecules that can be adjusted in their arrangement by an electric field. In LCoS, the liquid crystal is usually located between two pieces of glass or wafers.
CMOS backplane: The CMOS backplane provides pixel-level control of the electric field used to manipulate the liquid crystal molecules in the liquid crystal layer. Each pixel point has a corresponding electrode that controls the voltage through CMOS circuitry, which changes the alignment of the liquid crystal molecules and adjusts the phase or polarization state.
Orientation layers: Typically, two thin polyimides (PI) orientation layers are located at the top and bottom of the liquid crystal layer, which determines the alignment direction of the liquid crystal molecules and ensures the consistency of the liquid crystal alignment.
One of the core features of WiMi's LCoS for AR displays is phase modulation. When incident light passes through a liquid crystal layer twice, its phase is modulated according to the arrangement pattern of the liquid crystal molecules. This phase modulation is achieved by controlling electrodes on the CMOS backplane, where different voltages result in different arrangements of the liquid crystal molecules, thus changing the phase of the light. In addition to phase modulation, LCoS can also be used for polarization modulation. By adjusting the arrangement of the liquid crystal molecules, LCoS can change the polarization of the incident light so that it becomes linear, circularly polarized, or other specific polarization states, which is very important for certain applications. In addition, the electrodes on the CMOS backplane are typically pixelated, meaning that each pixel point can be controlled independently. This pixelated layout allows for the creation of high-resolution images or light fields across the entire LCoS panel.
In order to improve the display performance, especially to address the fringe field effect, the solution employs phase delay optimization. This includes dividing the pixel area into inner and outer zones, as well as precisely adjusting the pre-tilt angle to minimize phase delay errors. The solution is dedicated to realizing high-resolution and small-pitch LCoS panels to provide sharper, brighter and more realistic AR displays.
WiMi's LCoS technology for AR displays is expected to bring higher performance, better user experience, and a wider range of applications to augmented reality technology. Through optically addressed liquid crystal light valves, LCoS can precisely modulate the phase and polarization state of light to achieve highly controllable optical effects, which opens up new possibilities for the development of AR fields such as virtual simulation, healthcare, education and entertainment. The technology enables users to experience a more realistic overlay of virtual information. This results in a more realistic, brighter and clearer display in AR. Not only that, LCoS has lowered the threshold of the AR market, attracting more manufacturers and developers and driving continuous innovation and development of the technology. The application of this technology will help drive the popularization and innovation of AR technology, bringing more possibilities to our daily lives and professional fields.
About WIMI Hologram Cloud
WIMI Hologram Cloud, Inc. (NASDAQ:WIMI) is a holographic cloud comprehensive technical solution provider that focuses on professional areas including holographic AR automotive HUD software, 3D holographic pulse LiDAR, head-mounted light field holographic equipment, holographic semiconductor, holographic cloud software, holographic car navigation and others. Its services and holographic AR technologies include holographic AR automotive application, 3D holographic pulse LiDAR technology, holographic vision semiconductor technology, holographic software development, holographic AR advertising technology, holographic AR entertainment technology, holographic ARSDK payment, interactive holographic communication and other holographic AR technologies.
Safe Harbor Statements
This press release contains "forward-looking statements" within the Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as "will," "expects," "anticipates," "future," "intends," "plans," "believes," "estimates," and similar statements. Statements that are not historical facts, including statements about the Company's beliefs and expectations, are forward-looking statements. Among other things, the business outlook and quotations from management in this press release and the Company's strategic and operational plans contain forward−looking statements. The Company may also make written or oral forward−looking statements in its periodic reports to the US Securities and Exchange Commission ("SEC") on Forms 20−F and 6−K, in its annual report to shareholders, in press releases, and other written materials, and in oral statements made by its officers, directors or employees to third parties. Forward-looking statements involve inherent risks and uncertainties. Several factors could cause actual results to differ materially from those contained in any forward−looking statement, including but not limited to the following: the Company's goals and strategies; the Company's future business development, financial condition, and results of operations; the expected growth of the AR holographic industry; and the Company's expectations regarding demand for and market acceptance of its products and services.
Further information regarding these and other risks is included in the Company's annual report on Form 20-F and the current report on Form 6-K and other documents filed with the SEC. All information provided in this press release is as of the date of this press release. The Company does not undertake any obligation to update any forward-looking statement except as required under applicable laws.
View original content:https://www.prnewswire.com/news-releases/wimi-developed-a-liquid-crystal-on-silicon-lcos-technology-solution-301979676.html
SOURCE WiMi Hologram Cloud Inc.
FAQ
What is the core technology that WiMi Hologram Cloud Inc. has developed for AR displays?
What are the technical problems faced by LCoS technology?
How will WiMi's LCoS technology affect the AR market?
