Liquid crystal display device and manufacturing method thereof

Abstract

The invention discloses a liquid crystal display device, comprising an array substrate, a color filter substrate arranged opposite to the array substrate, and a liquid crystal layer sandwiched between the array substrate and the color filter substrate; the array substrate It includes a first transparent substrate, a first electrode and a second electrode formed on the first transparent substrate, the first electrode and the second electrode are formed on different layers with an insulating layer interposed therebetween; the color filter The substrate includes a second transparent base and a black matrix formed on the second transparent base, a third electrode covering the black matrix and the surface of the transparent base without the black matrix, covering the third electrode A photoresist layer on the electrode, and an optical spacer covering the photoresist layer, the optical spacer comprising a plane layer covering the photoresist layer and extending integrally from the plane layer as a liquid crystal The layer provides optical spacers supported by spacers; the liquid crystal molecules in the liquid crystal layer are negative liquid crystal molecules.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display device and a manufacturing method thereof. Background technique [0002] Thin Film Transistor-Liquid Crystal Display (TFT-LCD) is widely used in the field of flat panel display because of its low radiation, thin thickness and low power consumption. Initially, most desktop TFT-LCDs adopt TN (Twisted Nematic, twisted nematic) mode. However, the first electrode and the second electrode of the TN type liquid crystal display are respectively formed on the upper and lower substrates, and the liquid crystal molecules It rotates in a plane perpendicular to the substrate. Due to the optical anisotropy of the liquid crystal molecules, the optical path of light entering the human eye after passing through the liquid crystal molecules from different angles is different, so the display effect is different, which will inevitably lead to a relatively smal...

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Problems solved by technology

[0006] In order to obtain high-contrast, wide-viewing-angle products, and to prevent pollution caused by the contact between the alignment film and the color-resist material of the photoresist layer, resulting in poor rubbing process, the prior art is usually coated after the color-resist material of the color filter substrate is completed. A layer of protective film (overcoat layer, hereinafter referred to as "OC layer") is used as a flat layer, and the alignment film is formed on the OC layer, so that the OC layer will smooth out the discontinuity of the color-resist material in the overlapping area, thereby reducing the gap on the alignment film. The pretilt angle of liquid crystal molecules achieves the purpose of reducing the brightness of the dark state, increasing the contrast, and increasing the viewing angle. However, due to the need to add an OC layer, the process will increase the process and lengthen the time of the entire process, resulting in a reduction in production costs. Increase

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