Transfer printing head of laser transfer printing apparatus

Abstract

The invention relates to a laser head of a laser transfer printing device which can continuously keep a distance between a film of transfer printing material and a transfer printing object body on the micron-grade (for example, 5mum to 20mum) in the laser transfer printing device represented by a laser restoration device, which comprises: a transfer printing plate cage provided with a transfer printing window whose underside keeps a transfer printing plate and which makes the transfer printing plate exposed toward to the upper side; a transfer printing head body which is provided with a transfer printing plate cage ingathering space and at the same time provides position datum in the horizontal direction and the vertical direction; a cage bearing mechanism which is relative to the transfer printing head body and supports the transfer printing plate cage ingathered in the transfer printing plate cage ingathering space of the transfer printing head body in a form that can move up and down and cannot move horizontally; a transfer printing plate floating device which makes the transfer printing plate and the transfer printing plate cage together emerge related to the transfer printed surface via jetting pressure gas to the lower side of the transfer printing plate.

Description

technical field [0001] The present invention relates to a transfer head that is suitable as a laser transfer device such as a laser repair device for repairing a defect of a circuit pattern in a display device such as a liquid crystal display or a plasma display. Background technique [0002] Currently, in display devices such as liquid crystal displays and plasma displays, laser repairing apparatuses using laser CVD methods are widely used to repair defects in circuit patterns. [0003] The laser repair device utilizing the laser CVD method utilizes the laser-based chemical vapor growth method. Specifically, by irradiating laser light on the substrate placed on the source gas and promoting the chemical and physical reactions of the source gas on the laser-irradiated surface, the raw material A film of gas grows on the repaired portion of the substrate. [0004] However, it should be pointed out that, in this laser repairing device using the existing laser CVD method, as th...

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Problems solved by technology

[0011] But, on the surface of this object of restoration (substrate of display device etc.), originally there is the concavity and convexity of micron order, no matter in any position of object of restoration, the distance with the surface will always be kept on micron order (such as 5 ~ 20μm), it is difficult to achieve in the usual servo control technology using servo motors, linear motors, etc.

[0012] Moreover, since such objects to be repaired (display devices, etc.) are easily affected by electricity and magnetism, it is not possible to adopt a levitation control method that utilizes static electricity and magnetism.

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