CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a U.S. National Stage Application under 35 U.S.C. § 371 of International Patent Application No. PCT/CN2018/077411 filed on Feb. 27, 2018, which claims priority to Chinese patent application No. 201710194136.4 filed on Mar. 28, 2017, DISPLAY PANEL, AND FRAME SEALANT APPLICATION DEVICE AND APPLICATION METHOD THEREOF which are incorporated herein by reference in their entireties.

TECHNICAL FIELD

Embodiments of the present disclosure relate to a display panel, a sealant coating device and a method for sealant coating.

BACKGROUND

As an important material used for production of liquid crystal display panels, the sealant is operable to bond a lower substrate and an upper substrate firmly together and protect the entire overlay of various circuit wiring on the lower substrate, i.e. the substrate on which thin film transistors (TFTs) are arranged in an array, very well from corrosion.

SUMMARY

Embodiments of the present disclosure provide a display panel, a sealant coating device and a method for sealant coating.

Embodiments of the present disclosure employ the following technical proposals.

In a first aspect, a display panel is provided by embodiments of the present disclosure, comprising: a display area and a peripheral area; an oleophobic sealant provided in the peripheral area on a side near the display area; and a hydrophobic sealant provided in the peripheral area on a side away from the display area and surrounding the oleophobic sealant.

For example, the oleophobic sealant comprises a matrix sealant material and particles dispersed in the matrix sealant material, the dispersed particles having oleophobic first functional groups on their surfaces.

For example, the oleophobic first functional group comprises at least one of —OH, —CHO, —COOH and —NH2.

Optionally, the hydrophobic sealant comprises a matrix sealant material and particles dispersed in the matrix sealant material, the dispersed particles having hydrophobic second functional groups on their surfaces.

For example, the hydrophobic second functional group comprises at least one of —CnH(2n+1), —CH═CH2, —C6H5, a halogen atom and —NO2, where n is a positive integer.

Optionally, the material of the dispersed particles includes any of silicon dioxide, silicon and aluminum oxide (Al2O3).

Optionally, the dispersed particles are in a spherical shape.

In a second aspect, a device for sealant coating is provided by an embodiment of the present disclosure, comprising a first sealant supplying container, a second sealant supplying container and a spray head. The spray head comprises a first accommodation chamber, a second accommodation chamber and a slit opening. The first accommodation chamber and the second accommodation chamber are in intercommunication at the area near the slit opening. The first sealant supplying container and the second sealant supplying container are in communication with ends of the first accommodation chamber and the second accommodation chamber away from the slit opening and configured to contain oleophobic sealant and hydrophobic sealant, respectively.

Optionally, the device for sealant coating further comprises a pressure controller to control the feeding amount of sealant from the first sealant supplying container and/or the second sealant supplying container.

In a third aspect, a coating method using the device for sealant coating is provided in an embodiment of the present disclosure, comprising: allowing a side of the second accommodation chamber of the spray head to face the display area of the first substrate in the display panel; allowing a side of the first accommodation chamber of the spray head to face away from the display area; and controlling the spray head to spray the sealant along the peripheral area of the first substrate so as to form the hydrophobic sealant in the peripheral area and on the side near the display area and form the oleophobic sealant in the peripheral area on the side away from the display area and surrounding the hydrophobic sealant.

