Process method for realizing color display on black and white screen

Abstract

The invention discloses a process method for realizing color display on a black and white screen. The process method comprises the following steps: laminating liquid crystal glass and a polaroid; spraying color printing ink; pretreating the liquid crystal glass or the polaroid, wherein the pretreatment comprises the following steps: coating a polymer coating on the position where the color printing ink is sprayed on the liquid crystal glass or the polaroid; and curing the polymer coating. The invention further provides a black-and-white-to-color display screen manufactured through the process method. According to the method, the existing color display process of the black and white liquid crystal screen is thoroughly changed, the cost can be greatly reduced, the production efficiency can be improved, and the method is good in practicability, easy to popularize and apply and high in value.

Description

technical field [0001] The invention relates to the field of display screens, in particular to a process method for realizing color display on a black and white screen. Background technique [0002] Because of its high contrast ratio and wide viewing angle, liquid crystal displays are used in high, medium and low-end equipment, such as car display screens, audio display screens, and high-end instrumentation display screens. Existing black-and-white liquid crystal screen realizes the mode of color display (such as automobile speed display panel, fuel gauge display panel etc.) is to realize by adding a layer of film with silk screen printing color ink again below the liquid crystal display module. This method solves the problem of black and white screen color display, but it has the following disadvantages: [0003] 1. Usually, color film screen printing has 6-8 colors, and the color changes gradually from dark to light, and the effect of gradual change needs to be achieved b...

AI Technical Summary

Problems solved by technology

[0003] 1. Usually color film screen printing has 6-8 colors, and the color changes gradually from dark to light, and the effect of gradual change needs to be achieved by screen printing with different densities of dots. Screen printing is difficult, low yield, and high cost

[0004] 2. It is very difficult to set the positions between 6-8 colors, and if there is a slight misalignment, it is easy to produce shadows due to the overlapping of adjacent colors, which cannot meet the needs of the final product.

[0005] There is another way to achieve color display in the existing technology: directly screen printing color ink on the liquid crystal glass or polarizer. This method can solve the above problems to a certain extent, but there are still the following disadvantages: limited by the screen printing method , this method is only suitable for some simple color graphics that are not difficult to screen-print, but it is powerless for multi-color, gradient colors with halftone dots

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