Display panel and manufacturing method thereof

Abstract

The invention provides a manufacturing method of a display panel. The manufacturing method comprises steps as follows: a first flexible substrate is formed on a first rigid substrate, and a second flexible substrate is formed on a second rigid substrate; an array process is completed on the first flexible substrate to form multiple array areas, and a color film process is completed on the second flexible substrate to form multiple color film areas; the array areas and the color film areas are in one-to-one correspondence to form multiple liquid crystal boxes; the liquid crystal boxes are cut and separated. First laser is used for irradiating from one side of the second rigid substrate of the liquid crystal boxes, so that the second rigid substrate and the second flexible substrate of the liquid crystal boxes are lifted off; second laser is used for irradiating from one side of the first rigid substrate of the liquid crystal boxes, the first rigid substrate and the first flexible substrate of the liquid crystal boxes are lifted off, and the wavelength of the second laser is smaller than that of the first laser. The rigid substrates on two sides are lifted off with laser with different wavelengths, so that the problem of performance decline of array devices due to unevenness of the flexible substrates is solved.

Description

technical field [0001] The invention belongs to the technical field of display panel manufacturing, and in particular relates to a display panel and a manufacturing method thereof, in particular to a flexible display panel and a manufacturing method thereof. Background technique [0002] With the gradual rise of wearable application devices such as smart glasses and smart watches, the demand for flexible display devices in the display industry is also increasing. Organic light emitting diode (Organic Light Emitting Display, OLED) display has the characteristics of self-illumination without backlight, thin thickness, wide viewing angle, fast response speed, etc., so it has the natural advantages of flexible display. However, the current OLED industry still has a high technical threshold, difficult manufacturing process, low yield, high cost, and high price. These difficulties hinder the wide application of OLED. [0003] Liquid Crystal Display (LCD) has a relatively long dev...

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Problems solved by technology

From the perspective of the preparation of the PI substrate and the separation process from the glass substrate, it is mainly divided into two methods: laser lift-off and mechanical lift-off. Among them, the laser lift-off method has low productivity and the mechanical lift-off has a low yield due to mechanical stress. way to improve

[0005] Usually, in the basic manufacturing process of flexible liquid crystal display devices, after the box forming process is completed, it is necessary to peel off the glass substrate from the CF (color film) side and the Array (array) side, and then carry out the polarization of the polarizer, the chip and the flexible circuit board. The bonding (IC&FPC bonding), backlight module assembly and other processes, in which the process of peeling off the glass substrate is carried out by irradiating the glass substrate from the front. One of the important reasons is that the laser irradiation of the PI substrate will cause a certain degree of roughness increase. , this point is conducive to improving the transmittance through the uneven structure of the surface for the interface separating the PI substrate and the glass substrate. The performance degradation of Array (array) devices caused by unevenness

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