Ultraviolet curable ink receptive layer for color filter, and method of producing color filter

Abstract

The prevent invention provides an ultraviolet curable ink receptive layer for a color filter to colorize the system of conventional monochrome electronic papers without the luminosity being deteriorated in a simple and inexpensive way, and a method of producing the color filter. The color filter is obtained by using the receptive layer with coloring ink, and forms colored regions under the condition that the coloring ink of multiple colors ejected by the ink-jet method is not mixed with the adjacent coloring ink of a different color. The receptive layer is formed by receiving the coloring ink by a transparent resin film composed of a transparent resin composition in which transparent resin is dissolved, and applying ultraviolet curing. The present invention further provides the method of producing the color filter, in which after the transparent resin film composed of a transparent resin composition is created, the coloring ink of multiple colors is ejected on the transparent resin film by the ink-jet method, and the transparent film is dried and irradiated by ultraviolet light, thereby curing the transparent film and forming the colored regions.

Description

technical field [0001] The present invention relates to a method for producing an ultraviolet curable receiving layer for forming a colored region of a color filter and a color filter. A receiving layer and a method of manufacturing a color filter using the same. Background technique [0002] Electronic paper is actively being developed as an electronic medium replacing paper. Compared with CRT and liquid crystal displays, which are conventional displays, the characteristics required for electronic paper include: it is composed of a reflective display element, has high white reflectance and high contrast, has a memory effect in display, and can be used as an electronic paper. Low-voltage drive, thin and light, and cheap. In particular, white reflectance and contrast of the same quality as paper are required as display characteristics. In addition, the conventional paper medium is naturally full-color display, and expectations for colorization of electronic paper are very ...

AI Technical Summary

Problems solved by technology

In addition, the conventional paper medium is naturally full-color display, and expectations for the colorization of electronic paper are very high

[0003] As the technology of electronic paper capable of color display proposed so far, for example, the medium forming the color filter in the reflective liquid crystal device has all been commercialized, but since these usually use polarizers, the light utilization efficiency is low, and only Capable of darker white display

In addition, since black cannot be displayed, the contrast ratio is also poor

[0004] In addition, as a bright reflective display device, there is an electrophoretic method. The principle of the electrophoretic method is to move charged white particles and black particles through an electric field. However, the scattering reflectance of the white particles in this electrophoretic method is less than 40% at most, and further improvement is required. reflection efficiency

However, this surface treatment method needs to set conditions for making the contact angle of each transparent support substrate the same, which is not suitable for mass production, and the control range is also limited.

In addition, when the inkjet method is used to directly form a colored area on the panel, this surface treatment method may cause damage to the panel.

Images