Display

Dissolving the limits for endless development of glass!

Because it deals with the devices that bring people and information together, display technology is becoming increasingly important. High performance glass panels produced by advanced glass technology are helping to drive the evolution of LCDs, PDPs, and next-generation CRTs.

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Using innovative technology, Asahi Glass provides large glass substrates for the fabrication of TFT-LCD panels with excellent picture quality.

Flat glass substrates for TFT-LCDs must continually achieve large size, high quality (high planarity and freedom from defects) with low costs.
  Using exceptional competence in glass-composition design and melt-forming technology, Asahi Glass has succeeded in providing makers with glass substrates that contain none of the alkali constituents or the toxic arsenic that was formerly used in the fining process. Moreover, Asahi Glass is the only company that produces glass panels for FPDs by the float process. This has enabled us to set up an effective system for the stable supply of large glass substrates. In addition, in combination with our quality sensing technology, our exclusive high-speed, high-precision polishing technology ensures that our large-scale substrates also provide very high quality.
  Technology has already started advancing from LCD to memory displays, and beyond to electric paper. Determined to help drive forward the advance of display technology, we will continue to meet the challenge of glass.

Glass substrates for LCDs    

Glass substrates for LCDs
Our glass substrates are the foundation for the move of LCD towards higher resolution and higher quality. Asahi Glass can also provide the substrates coated with indium tin oxide (ITO) and other forms of metals. We also deal with color filters.

       
Glass inspection    

Glass inspection
With our thorough knowledge of sensing technology, we conduct stringent product evaluation using laser-scanning glass-quality sensors. This enables us to maintain a reliable supply of high-quality glass substrates.

Success in achieving larger sizes through composition design, material engineering, and coating technology.

The glass substrates used for plasma display panels (PDPs) have to have the same coefficient of thermal expansion as ordinary soda-lime glass of the same thickness but with better thermostability. Drawing on our long years of experience of composition design, we cleared this hurdle. Now, Asahi Glass supplies glass substrates (PD200) for PDPs with a high strain point made by float process.
  In PDP fabrication, barrier ribs are formed on the glass to make the RGB (red, green, and blue) pixels. Asahi Glass supplies frit and paste materials that are used for building these ribs, as well as other frit materials, including conductive frit for controlling the plasma discharge and black matrix composition that improves contrast.
  Expertise in materials and coating technologies is also supporting the move to next-generation large-scale panels by contributing to form various functional films on glass substrates.

  Success in achieving larger sizes through composition design, material engineering, and coating technology.
Frit pasteFrit paste

Frit paste
Because of its expertise in composition design and sintering technology, Asahi Glass has been able to develop glass-powder-based frit pastes that meet any demanding application.

Finding new possibilities in CRTs. Pursuing technology that transcends common sense.

Everyone knows that rounded forms resist pressure. By coming up with a tube that has a completely flat, distortion-free screen, however, we turned common sense on its head. Flat, light, easy on the eyes,larger and more attractive... we are always seeking inspiration to make displays more amenable to the viewer.
  CRT glass contains a variety of trace amounts of substances in the composition because they can endow CRT glass with different functions, including X-ray shielding and control of the picture quality. Moreover, even the tiniest bubbles or unmelted inclusions, even if so small, are not allowed to remain in the glass. Our excellent glass-smelting technology is the key enabling us to provide such fine quality.
  Precise control of the manufacturing process from forming to polishing is also crucial to avoid the distortion or color irregularity in the picture.
  Using our excellent manufacturing technology along with the latest sensing techniques, Asahi Glass challenges to develop new, more advanced CRT glass.

Flat CRTs    

Flat CRTs
As the thermal stress for flat screen CRTs is larger than for curved screen CRTs, tempered glass is needed to withstand it.
 Expertise in three-dimensional simulation and physical tempering techniques, integrated with exclusive design and manufacturing technologies, resulted in ÀTriplet". a flat-square panel that greatly helped to make large, flat CRTs a reality.

       
Stress distribution analysis    

Stress distribution analysis
Design technology that uses analysis of stress distribution and other techniques have been developed. The success has enabled us to effectively come up with a thermal tempering process that reinforces the regions of greatest stress and reduces weight. As a result, viewers can enjoy clear pictures with flat, larger screen.

Coating further improves performance.

Asahi Glass expertise in coating has also played a part in making screens easier to view and more beautiful. Typical processes include wet coating, as in spin coating and printing, and dry coating. For example, the use of sputtering in vacuum chambers enables high-precision formation of optical interference filters and transparent conductive coatings. These techniques also enable control of light, antistatic, electromagnetic shielding, and antireflective properties.
  Motivated by the aspiration to see displays as thin as paper, we are also trying to materialize organic LEDs for a completely new type of display. Although the light-generating efficiency is still low and the lifetime too short, surface processing can provide remedies for these problems

CRT coatings    

CRT coatings
Displays that have received electromagnetic shielding, and anti-reflective and antistatic coatings are very much easier on the eyes.

       
Sputtering deposition    

Sputtering deposition
Sputtering is carried out in vacuum conditions. It is not only able to provide highly uniform thin-film coatings of high quality but also these films can also be built up in multiple layers. From transparent conductive films on glass substrates, through energy-efficient architectural and automotive glass coatings, to antireflective treatments that reduce glare, sputtering is applied to the products for a wide range of industrial applications.

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