High reflectivity colorful filter and its manufacture method

A color filter, high reflectivity technology, applied in optics, optical components, sputtering and other directions, can solve the limitations of RE-LCD application and promotion, low reflectivity of color filter film, poor display quality, etc. problem, to achieve the effect of improving display quality, increasing total light intensity, and improving reflectivity

CN101191858AInactive Publication Date: 2008-06-04深圳市合力泰光电有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2008-06-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a high-reflectivity color filter. A metallic thin film is arranged between a filtering film layer showing the R-G-B (tricolor) spectral region and light-transmitted substrate, which is formed on a sensitive film, has light-concentrating effect and a tapered cross section and arches toward the filtering film layer. The invention also discloses a method for making the metallic thin film which has a tapered cross section and arches toward the filtering film layer, which comprises the following steps of: 1) cleaning the light-transmitted substrate; 2) making mother plate on the light-transmitted substrate; 3) making the metallic thin film layer which has a tapered cross section and arches toward the filtering film layer on the surface of the sensitive film of the mother plate. The making method is simple. The metallic thin film layer which has a tapered cross section and arches toward the filtering film layer being taken as the a reflecting layer, and the inclined faces on two sides of the metallic thin film layer concentrating the reflected light in to the filtering layer within certain angular field of view, the overall light intensity within the angular field of view is obviously increased and the reflectivity of the color filtering film is greatly improved and the display effect under the condition of weak light can be improved. The invention is advantageous to the utilization and population of the RE-LCD and the TR-LCD.
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Description

technical field

[0001] This invention relates to the structural connection of polarizers with liquid crystal cells to control the intensity, color, phase, polarization or direction of light from independent light sources, and in particular to a polarizer for transflective and total reflective A high-reflectivity color filter for a liquid crystal display and a manufacturing method thereof. Background technique

[0002] A Liquid Crystal Display (LCD for short) is a passive display device that requires an external light source. Classified by the way of using external light sources, liquid crystal displays include reflective liquid crystal display (Reflective LCD, referred to as RE-LCD); LCD). Among them, the auxiliary light source used by RE-LCD to emit light is the front light source (Front lighting system, referred to as FL). A reflective plate or polarizing base is arranged at the bottom or rear of the liquid crystal unit to replace the backlight used in the transmission m...

Examples

Embodiment Construction

[0031] like figure 1 The high-reflectivity color filter shown includes an ITO conductive film 1 and a light-transmitting substrate 8. Below the ITO conductive film 1 is an OC layer 2, and then there are filter film layers 3, 4, and 5 that respectively display the three primary color regions of R-G-B. and BM light-shielding layer 6, wherein the filter film layers 3, 4, and 5 are composed of R-G-B three-coloring units made of pigment-dispersed organic color coatings. on the surface of the sheet 8 and part of the surface is exposed, the filter film layers 3, 4, 5 are arranged between the grid points of the BM light shielding layer 6, and the OC layer 2 is arranged between the light filter film layers 3, 4, 5 and the BM light shielding layer Layer 6 above. Between the filter film layers 3, 4, 5 showing the R-G-B three primary color regions and the light-transmitting substrate 8 is formed on the photosensitive adhesive with a trapezoidal cross-section and a metallic thin film arch...