A liquid crystal display panel and a manufacturing method therefor, and a display device are provided. The display panel includes an opposing substrate, an array substrate, and a sealant. A limiting portion surrounding a display region is disposed in a non-display region of the opposing substrate. A non-display region of the array substrate includes a loosely-arranged wire region surrounding a display region and a densely-arranged wire region surrounding the loosely-arranged wire region. The layer height of the array substrate in the densely-arranged wire region is greater than that of the array substrate in the loosely-arranged wire region. The projection of the sealant on the opposing substrate is located outside the limiting region and the projection of the sealant on the array substrate is located in the densely-arranged wire region.