Coating method of sealant

A coating method and frame sealing glue technology, which is applied to the device, coating, optics and other directions of coating liquid on the surface, can solve the problem of uneven box thickness, etc., and achieve the goal of solving uneven box thickness and improving production yield Effect

CN105457859BActive Publication Date: 2018-03-30WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-03-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a coating method for frame sealing adhesive. According to the coating method, an adhesive application region on a substrate is divided into an adhesive application starting region body, an adhesive application middle region body and an adhesive application stopping region body according to an adhesive application route, and the adhesive application stopping region body and the adhesive application starting region body are designed to overlap, so that sealing of the frame sealing adhesive is achieved; an adhesive jetting nozzle moves along the adhesive application route and jets the adhesive in the adhesive application process, and the adhesive jetting amount, in the different coating region bodies, of the adhesive jetting nozzle is controlled in the adhesive application process, so that the sum of the adhesive application thickness of the adhesive application stopping region body and the adhesive application thickness of the adhesive application starting region body is equal to the adhesive application thickness of the adhesive application middle region body, and the thickness of the sealing portion of the frame sealing adhesive is equal to that of other parts. The problem that box thicknesses are uneven in the alignment process is solved, and the yield of a liquid crystal display panel is increased.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of manufacturing display panels, in particular to a method for coating a frame sealant. Background technique

[0002] A liquid crystal display (LCD, Liquid Crystal Display) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a liquid crystal display panel and a backlight module. Usually, the liquid crystal display panel consists of a color filter substrate (CF, Color Filter), a thin film transistor substrate (TFT, Thin Film Transistor), a liquid crystal (LC, Liquid Crystal) sandwiched between the color filter substrate and the thin film transistor substrate, and a sealant ( Sealant) composition; its molding process generally includes: front-end array (Array) process (thin film, yellow light, etching and film stripping), middle-stage box (Cell) pr...

Examples

Embodiment Construction

[0033] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0034] see image 3 , the invention provides a method for coating frame sealant, comprising the following steps:

[0035] Step 1, such as Figure 4 As shown, the substrate 10 and the gluing equipment (not shown) that are provided with a glue-spraying nozzle are provided, and the glue-coating route of the sealing glue is set on the substrate 10. During the glue-coating process, the glue-spraying nozzle follows the coating The glue line moves and spits out glue. According to the glue line, the gluing area on the substrate 10 is divided into a gluing start area 21, a gluing intermediate area 22, and a gluing termination area 23. The gluing termination area 23 and The gluing starting area 21 is designed to overlap, so that the sealant can be sea...