In today's high-tech society, the application of LED display technology is ubiquitous, ranging from large-screen TVs to small mobile phones. However, as a new generation of display technology, LED display still has some shortcomings. One of the most limiting factors is the relatively low transparency of the glass substrate, which restricts its further application in fields such as transparent electronics and smart windows. Therefore, the development of glass LED display with high transparency rate has become a research hotspot.

The key to achieving high transparency rate in glass LED display lies in the selection of materials and manufacturing processes. Firstly, the material used for the glass substrate should have high optical transmittance. At present, the commonly used glass materials for LED display include soda-lime glass, quartz glass, and so on. However, these materials still have some limitations in terms of transmittance, which cannot meet the requirements of high-transparency display. Therefore, it is necessary to develop new glass materials with higher transmittance. For example, some researchers are trying to use lanthanum-based glass materials to replace traditional glass materials because lanthanum has a higher transmittance in the visible light region. In addition, some new materials such as transparent ceramic and transparent polymer are also being developed.

Secondly, the light emitting layer of the LED display should also have high optical transmittance. Currently, the commonly used light emitting layer material is quantum dot (QD). Quantum dot has a high optical transmittance and can achieve color mixing by controlling the size and composition of quantum dots, which is very suitable for high-transparency display. In addition, some new materials such as carbon nanotubes and graphene are also being developed as light emitting layer materials.

Finally, the manufacturing process also has a great impact on the transparency of glass LED display. The current manufacturing process of LED display usually needs to add some protective layers or metal electrodes on the glass substrate, which will reduce the transmittance of the whole device. Therefore, how to reduce the thickness and opacity of these layers and electrodes is also one of the research directions of improving the transparency of glass LED display.

In summary, achieving high transparency rate in glass LED display requires a combination of material innovation and process optimization. With the continuous progress of science and technology, we believe that glass LED display with high transparency rate will become a reality in the near future and bring more possibilities to transparent electronics and smart windows.