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Frame sealing glue and preparation method thereof

A frame-sealing and coating technology, applied in adhesives, optics, instruments, etc., can solve the problems of low product yield, increased glue breakage rate, and increased impact on frame-sealing glue, so as to achieve poor glue breakage. The effect of low rate, improved yield and neat edge

Inactive Publication Date: 2014-12-10
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dry width of the frame sealant for ordinary LCD panels is 0.8~1.0mm, and the dry width of the frame sealant for narrow bezel LCD panels is required to be less than 0.5mm, and the current sealant is not suitable for narrow bezel LCD panels. At the same time, the disconnection rate of glue coating increases, the bonding strength is low, and the degree of liquid crystal impact sealing glue increases (liquid crystal puncture), which eventually leads to problems such as high product yield and low product yield, serious pollution of liquid crystal by sealing glue and low product quality.

Method used

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  • Frame sealing glue and preparation method thereof
  • Frame sealing glue and preparation method thereof
  • Frame sealing glue and preparation method thereof

Examples

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preparation example Construction

[0042] The invention provides a method for preparing a frame sealant, comprising the following steps:

[0043] The raw materials for preparing the frame sealant are mixed evenly at a temperature lower than 30°C, wherein the composition of the raw materials for the preparation of the frame sealant includes: low-viscosity epoxy acrylic photocurable resin, light Initiators, coupling agents, conventional organic fillers, conventional inorganic fillers, and nanofillers.

[0044] Wherein, the low-viscosity epoxy acrylic photocurable resin specifically refers to the epoxy acrylic photocurable resin with a viscosity of 40-80 Pa·s. The conventional organic fillers and conventional inorganic fillers are commonly used sealant ingredients, for example, the conventional organic fillers are elastic rubber balls with a diameter of 0.1um~1.0um, and the conventional inorganic fillers are elastic rubber balls with a diameter of 1.0um~2.0um of silica spheres. Generally speaking, silicon balls ...

Embodiment 1

[0050] The embodiments of the present invention provide a frame sealing adhesive with higher bonding strength, especially suitable for narrow-frame liquid crystal panels, which can improve the high yield of narrow-frame products, such as figure 1 As shown, the preparation method of the sealant is as follows, including:

[0051] Step 101, batching, the composition and proportion (mass percentage) of each raw material for preparing the sealing glue are as follows:

[0052] 60% low viscosity epoxy acrylic photocurable resin, 1% photoinitiator, 2% coupling agent, 14% conventional organic filler, 18% conventional inorganic filler, and 5% nanometer filler; Support the box with silicon spheres 1% thick.

[0053] The low-viscosity epoxy acrylic light-curing resin described in this embodiment specifically refers to the epoxy-acrylic light-curing resin with a viscosity of 40-80 Pa·s (rotation speed: 2.5 rpm), which can be prepared in advance. Preferably, the structural formula of the lo...

Embodiment 2

[0078] The embodiment of the present invention also provides another method for preparing a frame sealant and the frame sealant prepared by this method. The difference from Example 1 is that the composition and proportion (mass percentage) of the raw materials used to prepare the frame sealant are different. ,details as follows:

[0079] 68% low-viscosity epoxy acrylic photocurable resin, 1% photoinitiator, 2% coupling agent, 10% conventional organic filler, 14% conventional inorganic filler, and 5% nanometer filler.

[0080] In addition, 1% of silicon balls for supporting the thickness of the box can be added.

[0081] The embodiments of the present invention provide a preparation method and the frame sealant prepared according to the method. When the frame sealant is coated with thin lines, the incidence of defective glue breaking is low, the edges of the frame sealant are neat, and there is no liquid crystal puncture phenomenon, avoiding In order to cause pollution to the...

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Abstract

The invention discloses frame sealing glue and a preparation method thereof, and relates to the field of displaying. Compared with existing frame sealing glue, the frame sealing glue is high in bonding strength, applied to a liquid crystal display panel with a narrow frame, and capable of improving the yield of a product with the narrow frame. The preparation method of the frame sealing glue includes the steps of compounding raw material, evenly stirring the compounded raw material under the temperature of 30 DEG C, mixing the prepared and stirred raw material at the temperature of 30 DEG C to 40 DEG C, removing bubbles contained in the raw material after mixing, testing viscosity, adjusting, filtering, and removing residues, wherein the composition and the proportion of the raw material used for preparing the frame sealing glue are as follows: 60-70% of low viscosity epoxy acrylic light-cured resin with the viscosity of 40-80 Pa.s, 1-2% of photoinitiator, 1-2% of coupling reagent, 5-15 % of conventional organic fillers, 10-20% of conventional inorganic fillers, and 5% of nanometer fillers.

Description

technical field [0001] The invention relates to the display field, in particular to a frame sealant and a preparation method thereof. Background technique [0002] Liquid crystal displays are now widely used in various display fields, such as homes, public places, office places and personal electronic related products. When making them, the array (Array) substrate and the color filter (Color Filter) substrate are manufactured separately, and then The array substrate and the color filter substrate are aligned and formed into a cell (Cell). [0003] At present, in the box-making process, the rapid drop-injection box-making process (ODF process) is mostly used, and the sealing glue is coated on the color film substrate, and then the TFT substrate and the color film substrate are boxed together, and after a certain amount of UV irradiation, then Through the heating process, the sealing glue is cured, so that the TFT substrate and the color filter substrate are bonded together. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/02G02F1/1339
Inventor 肖昂汪姗姗
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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