Packaging structure and manufacturing method of multi-component cholesteric liquid crystal electronic paper

Abstract

The invention discloses a packaging structure of multi-component cholesteryl liquid crystal electronic paper and a manufacturing method of the packaging structure of the multi-component cholesteryl liquid crystal electronic paper. The packaging structure comprises a first substrate, a second substrate, a first electrode layer, a first orientation film, a second electrode layer, a second orientation film, a seal frame located between the first substrate and the second substrate, multiple spacing walls, first seals, second seals, liquid crystal and a light absorption layer. The seal frame is used for combining the first substrate and the second substrate together at a preset interval to form a closed space together. The spacing walls are distributed in the closed space in parallel and used for dividing the closed space into multiple independent areas, and each spacing wall is used for dividing one independent area into a first area and a second area which are isolated from each other. The first seals and the second seals are arranged on the seal frame and used for injecting the liquid crystal into the first areas and the second areas respectively. The liquid crystal is sealed in the first areas and the second areas. The configuration of different colors in different display areas can be achieved, the structure is simple, cost is saved, and the requirement for electronic paper colorization can be met better.

Description

technical field [0001] The invention relates to a cholesteric liquid crystal electronic paper, in particular to a packaging structure of a multi-component cholesteric liquid crystal electronic paper and a manufacturing method thereof. Background technique [0002] With the rapid development of network technology and the maturity of wearable devices, the application of electronic paper display technology with storage characteristics is becoming more and more extensive. The conditions for replacing traditional advertisements, price tags, and bulletin boards with electronic paper are becoming more and more mature, which is suitable for the low power consumption requirements of wearable devices, and with the decline in cost and performance improvement of electronic paper, the penetration of traditional liquid crystal display applications is increasing year by year. At present, black-and-white terminals as e-books have been put into practical use, but advertisements, price tags a...

AI Technical Summary

Problems solved by technology

In addition, the Japanese patent JP2000267120A discloses three liquid crystal injection methods separately, but one kind of liquid crystal injection flow distance is too long and narrow to be practically applied

The above-mentioned patents are not widely used in the field of electronic paper either due to the complex structure or the high difficulty of the process, and the actual manufacturing cost is very high.

[0004] The important market for electronic paper focuses on the application field of replacing traditional paper. As printed matter, there is not much demand for color changes in fixed areas, but it is very sensitive to cost. The existing electronic paper technology is difficult to produce due to the reasons mentioned above. Produce low-cost color products

In addition, the difficulty and low reliability of the partition wall are also important reasons; the viscosity and uniformity of the partition wall are difficult to control, suitable materials are scarce, and existing materials are prone to irregular shapes and poor sealing, and The serious problem of mutual leakage of different types of liquid crystals

In addition, when the cholesteric liquid crystal electronic paper does not use an alignment film, the problem of short retention time of the displayed content is likely to occur; if an alignment film is used, the film layer will aggravate the problem of poor adhesion of the partition wall and uneven thickness

According to the current level of material technology, it is very difficult to manufacture a partition wall with uniform thickness and strong viscosity, especially the sealing of three tiny areas. The size of the partition wall is much smaller than the size of the liquid crystal pixel. It is impossible to achieve high yield production with the existing technology. Therefore the cost cannot be reduced

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