Analysis of trace metal elements in liquid crystals

Depending on the panel size, it is possible to analyze using different ICP-AES/MS devices!

We will introduce a case where ICP measurement was conducted using panels before and after reliability testing, along with quantification. The liquid crystal molecules in an LCD are oriented within the panel, and the display is controlled by changes in the orientation state of the liquid crystal due to voltage. When ionic substances, such as metal elements, are present inside the panel, the liquid crystal does not operate correctly, leading to display defects. Ionic substances are known to increase due to contamination during manufacturing or long-term use, making it important to quantify and understand them as part of panel quality. Metal ions can be quantitatively analyzed using ICP analysis, and depending on the differences in pretreatment methods and detection sensitivity, ICP-AES and ICP-MS are used selectively. [Analysis Content] ■ Comparison of metal element content using ICP-AES analysis ■ Comparison of metal element content using ICP-MS analysis *For more details, please refer to the PDF document or feel free to contact us.

• Analysis Services

We provide comprehensive support for customers facing reliability issues with overseas manufactured LCD displays, from reliability testing to failure analysis and material analysis.

Unreliable LCD displays are causing problems in the market. At Aites, we solve our customers' reliability issues through our extensive experience and state-of-the-art equipment, conducting reliability test design and visual inspections before and after testing. Furthermore, we provide support from failure mode classification to failure analysis and material analysis.

• Testing Equipment and Devices
• Contract Analysis
• Contract Inspection

Easily explain the technical capabilities of Aites by analyzing molecular structures with diagrams and tables!

This document introduces an example of analytical methods for molecular structure analysis. It includes structural analysis using IR and Raman for liquid crystal polymers (LCP), TIC data from GC-MS analysis of low molecular weight liquid crystals (for LCD), and detected substances, along with figures and tables. For analysis at the quantum level, please consult the technical group "Aites," which has extensive expertise. [Contents (excerpt)] ■ Liquid Crystal Polymers (LCP) ■ Structural analysis of LCP (fully aromatic polyamide) ■ Structural analysis using IR ■ Structural analysis using Raman ■ Structural analysis using XPS (ESCA) *For more details, please refer to the PDF document or feel free to contact us.

• Structural Analysis
• Analysis Services

Comparison of components in liquid crystal panels using gas chromatography-mass spectrometry (GC-MS) is published!

This document introduces a comparison of components in PC monitors and digital clocks using gas chromatography-mass spectrometry (GC-MS). Liquid crystal displays contain small organic substances (liquid crystal molecules). These have evolved into molecular structures suitable for product characteristics due to technological innovations. Our company clarifies these differences at the molecular level using GC-MS, allowing us to confirm that the liquid crystal molecules are appropriate for their intended use and to check for the presence of impurities. [Contents] ■ Component comparison of PC monitors and digital clocks using GC-MS ■ Case studies of GC-MS analysis of liquid crystal components We compared the number of components and characteristics of segment-type liquid crystal displays (digital clocks) and color TFT liquid crystal displays (PC monitors). *For more details, please refer to the PDF document or feel free to contact us.

• Contract Analysis

Check the quality status of LCD components and products! We will analyze the structures of the LCD panels using our analytical methods and expertise!

At AITES, we conduct quality analysis of LCD components/products, confirming the quality status of products based on our expertise in LCDs. The target panels include SEG-LCD, AM-LCD (a-Si TFT / LTPS TFT), OLED for automotive, monitors, mobile devices, and more. We perform quality analysis using our analytical methods on the various structures of liquid crystal panels. 【Analysis Content (Excerpt)】 <Reliability/Lighting Tests> ■ Classification - Reliability Tests - Lighting Inspections ■ Analytical Methods - Oven Drive Tests - Visual Inspection *For more details, please refer to the PDF document or feel free to contact us.

• Contract Analysis
• Analysis Services

We will narrow down the defective areas through lighting confirmation, panel disassembly, and optical microscope observation!

We provide a defect diagnosis menu for LCD panels, from confirming defects to identifying causes and conducting detailed failure analysis. In the initial analysis, we perform a status check (lighting test), panel disassembly, and optical microscope observation, tailored to the defect symptoms. In the detailed analysis, based on the diagnostic results from the initial analysis, we propose suitable methods such as surface analysis, cross-sectional analysis, and component analysis. It is also possible to speculate on the mechanisms of defect occurrence, including narrowing down the production processes that caused the defects. 【Analysis Content】 ■ Initial Analysis - Status check (lighting test), panel disassembly, optical microscope observation, conducted according to defect symptoms - Narrowing down from general areas such as cell panels and peripheral circuits to finer details ■ Detailed Analysis (additional analysis fees apply) - Based on the diagnostic results from the initial analysis, we propose suitable methods such as surface analysis, cross-sectional analysis, and component analysis - It is also possible to speculate on the mechanisms of defect occurrence, including narrowing down the production processes that caused the defects *For more details, please refer to the PDF document or feel free to contact us.

• Contract Analysis
• Analysis Services

We will detect and analyze the atomic emission that occurs when an atom returns from an excited state to its ground state!

In ICP emission spectroscopic analysis, it is possible to detect multiple metal elements contained in a sample simultaneously. This document introduces examples of the analysis of trace metal elements contained in liquid crystals. It includes the principles and overview of ICP-AES analysis as well as measurement examples. Please feel free to contact us regarding the sample state or the elements to be analyzed. [Contents] ■ Principles and Overview of ICP-AES Analysis ■ Measurement Example: Qualitative Analysis of Metal Elements in Liquid Crystal Panels *For more details, please refer to the PDF document or feel free to contact us.

• Contract Analysis

We introduce case studies of comparative analysis conducted through chemical analysis, such as GC-MS analysis and ICP-AES analysis!

In the event of a display failure on a liquid crystal panel, it is necessary to clarify the cause in order to prevent recurrence. This document presents a case study comparing panel A, which exhibited display unevenness due to temperature stress, and panel B, which showed no display issues, through chemical analysis. Aites can investigate the cause through chemical analysis of the liquid crystal interior when initial analyses, such as observations, do not reveal any issues. We can also propose analytical methods tailored to the sample and purpose beyond the techniques mentioned here. [Contents] ■ Reliability Testing (80°C/Dry Conditions/1000 Hours) ■ Liquid Crystal GC-MS Analysis ■ Metal Element ICP-AES Analysis in Liquid Crystal ■ Summary *For more details, please refer to the PDF document or feel free to contact us.

• Contract Analysis

We can perform good product characteristic measurements for performance verification, as well as defective characteristic measurements and reliability evaluations!

Our company can perform good product characteristic measurements, defective characteristic measurements, and reliability evaluations for specific TFTs in liquid crystal panels. In the "Electrical characteristic measurement of TFTs at various temperatures," we can disassemble the monitor in display mode and measure the electrical characteristics of the pixel TFTs within the panel. In the "DC bias stress test," we apply an arbitrary DC bias to the Gate and Drain and measure the Vth shift when stress is applied to the TFT, conducting reliability verification. 【Features】 - Electrical characteristic measurements can be performed on the pixel TFTs within the panel. - Measurements can be conducted before and after annealing, under light exposure, heating, or cooling conditions. - From the measurement results, indicators such as Ion, Ioff, Vth, and mobility can be calculated. - Verification of actual values in good product analysis and clarification of causes of defects can be performed. *For more details, please refer to the PDF document or feel free to contact us.

• LCD display

Rich equipment and expertise! We will elucidate the molecular structures of materials in general through chemical instrument analysis!

There are various types of liquid crystal materials, including low molecular weight compounds used in LCD panels and high molecular weight polymers used in printed circuit boards and electronic components. We would like to introduce examples of molecular structure analysis of these low molecular weight liquid crystals and high molecular weight liquid crystals (LCP). Our company, equipped with a wealth of devices and expertise, can handle reliability testing and analytical analysis of not only liquid crystal materials but also various other materials. Please feel free to consult us regarding the understanding of molecular structures of imported overseas products and materials, as well as troubleshooting issues. 【Case Study Details】 ■ Molecular structure analysis using FT-IR ■ Understanding of surface functional groups (molecular groups) through XPS (ESCA) analysis ■ Example of LCD liquid crystal material analysis using GC-MS *For more details, please refer to the PDF document or feel free to contact us.

• Analytical Equipment and Devices
• Contract Analysis
• Contract Analysis

We propose analytical methods tailored to materials and purposes! Here are examples of chemical analysis for each component, such as liquid crystals and sealing materials.

Liquid crystal displays use various organic materials, including liquid crystals, sealing materials, encapsulants, and polarizers. Considering the material properties and degradation mechanisms of each component from a chemical perspective is important for product evaluation and defect analysis. This document presents examples of chemical analysis for the components of liquid crystal displays. [Examples of Chemical Analysis] ■FT-IR: Principal component analysis ■EDX: Elemental analysis ■GCMS: Liquid crystal component analysis ■HS-GCMS: Outgassing analysis (degradation analysis) and more *For more details, please refer to the PDF document or feel free to contact us.

• Analytical Equipment and Devices
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CLT, which has been widely adopted in the construction field, is now expanding its applications into the civil engineering sector. The "Hyper CLT Mats" are civil engineering CLT products that utilize wood CLT as temporary materials. Traditionally, steel plates have been the mainstream choice for temporary roads, access routes, and heavy machinery yards. The Hyper CLT Mats introduce a new option of "wood" to that market. The 5x10 mats weigh approximately 230 kg, making them lightweight and easy to install and remove with small machinery, with a maximum capacity of 40 mats on a 10-ton truck. They also have advantages in terms of workability and transportation efficiency. Moreover, they offer added value that can only be achieved with wood, such as glare reduction, noise control, CO2 fixation, and consideration for aesthetics. This product is expected to be a new proposal for not only construction companies but also building material firms, lumber companies, and material trading companies. It is a registered technology with the Ministry of Land, Infrastructure, Transport and Tourism under NETIS, with the registration number "TH-250021-A." The use of wood is not limited to construction anymore. The utilization of Hyper CLT Mats is expanding as a new market that connects civil engineering and wood.

Fukuda Corporation has been pursuing leak detection for 60 years and is dedicated to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing performance. We will propose suitable testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

This is a collection of links to Fukuda's technical columns. It covers various topics related to leak tests and more... Please check the related links for more information.

In civil engineering sites such as mountainous areas and construction sites, it may be necessary to use wooden boards on slopes or inclined access roads. Hyper CLT boards are civil engineering materials utilizing wood CLT, which can be laid not only on flat ground but also on sloped terrain. They can be used for temporary roads, access routes, heavy machinery entry paths, and measures against muddy conditions, creating a driving environment that takes advantage of the unique surface characteristics of wood. The 5×10 board weighs approximately 230 kg, and the 5×20 board weighs about 460 kg, making them lightweight and easy to install and remove even with small machinery, which is a notable feature for maneuverability in narrow sites. This wooden board is registered as a technology under the Ministry of Land, Infrastructure, Transport and Tourism's NETIS system as "TH-250021-A," and can also be utilized for safety measures and innovative ideas in public works.

Metal cracks are one of the concerns in equipment maintenance operations. Repairs using conventional welding methods can alter the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" or "secondary damage." Hinode Waterworks Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for the repair of metal cracks without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material with heat. Repairs can be performed even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. For more details, please contact us or download the catalog.