Color filter and liquid display device provided with color filter

Abstract

There is provided a color filter used in a liquid crystal display device of the lateral field method which is built in the liquid crystal display device without using an electrode between the liquid crystal and the pixel of the liquid crystal display device. The color filter includes a transparent substrate and a pixel containing a colored layer of a plurality of colors arranged on the transparent substrate. No protection layer is provided on the pixel. The colored layer of at least one color has dielectric tangent (tan delta) in the range of frequency 10 Hz to 100 Hz and not greater than 0.03.

Description

Technical field [0001] The present invention relates to a color filter used in an in-plane switching mode liquid crystal device and an in-plane switching mode liquid crystal device provided with the color filter. Specifically, the present invention relates to a color filter in which the electrical characteristics of the color layer constituting the pixel do not adversely affect the switching characteristics of the liquid crystal, and it is possible to ensure high resolution without providing a protective layer on the pixel. Reliability also relates to in-plane switching mode liquid crystal devices provided with such color filters. Background technique [0002] Nowadays, color liquid crystal display devices are developing rapidly, especially as computer terminal display devices or television image display devices. The color filter is an indispensable and important component for the liquid crystal display device to display color images. In recent years, there is a strong demand for...

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Problems solved by technology

However, even in this case, various forms of display failure may still occur (for example, see Japanese Patent Laid-Open (Kokai) No. 2004-117537 (2004))

[0007] Furthermore, although the materials used for the color layer and the materials used for the coating layer have been improved to harmonize with in-plane switching mode liquid crystal display devices, in order to ensure satisfactory performance of the display device, it may be required In some cases, a thick coating layer with a thickness of not less than 2 μm is formed, which brings about a problem in that it is difficult to uniformly coat the coating layer, which is also one of the reasons that are not conducive to reducing the manufacturing cost.

[0008] In addition, the increase in material costs and the decline in yield due to the increase in manufacturing steps are also a factor that is not conducive to the reduction in manufacturing costs

Although it is desired to develop a color filter that can be applied to an in-plane switching mode liquid crystal display device without providing an overcoat layer, it is difficult to realize such a color filter due to the aforementioned problems.

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