Colored filter, manufacturing method thereof and LCD screen containing the optical filter

Abstract

The invention relates to a color filter used in a semipermeable color liquid crystal display (LCD) screen, a method for making the color filter and a semipermeable color LCD screen with the color filter. The color filter of the invention comprises a lower transparent conducting film, a transparent insulating layer, a color filtration film, a black matrix and a lower glass base plate, wherein, the color filtration film and the black matrix are directly coated on the upper surface of the lower glass base plate; fine beads or filaments which can reflect light are evenly mixed in the color filtration film, thus saving the reflective film and balancing transmission and reflection. The making method includes that the fine beads or the filaments are evenly mixed in color filtration ink by a certain proportion; the color filtration ink is then coated on the upper surface of the lower glass base plate provided with the black matrix, and the developing is carried out in sequence based on the design requirements to form a color unit so as to prepare the color filtration film. The making method saves the steps of plating the reflective film and etching on the reflective film, therefore the technique is simple. Furthermore, the LCD screen adopts the color filter and has simple structure and balanced transmission and reflection.

Description

technical field [0001] The invention relates to a transflective color liquid crystal display, in particular to a color filter for the transflective color liquid crystal display. [0002] The invention relates to a color liquid crystal display, in particular to a translucent color liquid crystal display. [0003] The invention also relates to a method for manufacturing a color liquid crystal display, in particular to a method for manufacturing a color filter used for a transflective color liquid crystal display. Background technique [0004] The color liquid crystal display is divided into a fully transparent color liquid crystal display and a semi-transparent color liquid crystal display. The existing transflective liquid crystal display screen, as shown in Figure 1, includes an upper polarizer 10, an upper glass substrate 1, an upper transparent conductive film 11, an upper liquid crystal alignment layer 12, and a liquid crystal display in sequence from the external light ...

AI Technical Summary

Problems solved by technology

This transflective color liquid crystal display allows users to see the color display outdoors or in places with strong ambient light. However, there is always a problem with the color filter of this transflective color liquid crystal display: transmission Rate and reflectance limit each other, that is to say, to have high transmittance or to achieve bright colors, the reflectance must be relatively low (less than 1%), resulting in poor contrast characteristics during reflection; to have high reflectance, then filter The color film cannot be made too thick, so that the color characteristics of the transmission will be deteriorated

There is always a contradiction in the color filter used in the transflective color liquid crystal display made by this production method: the transmittance and the reflectance limit each other, that is, to have a high transmittance or to achieve bright colors, the reflectance It must be relatively low (less than 1%), resulting in poor contrast characteristics during reflection; to have high reflectivity, the color filter film cannot be made too thick, resulting in poor color characteristics during transmission

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