Portable defect detector

Abstract

The invention relates to a detector of a glass substrate in the manufacture procedure of a liquid crystal displayer. The detector comprises a base, a detection device, a light projector, a first support, a second support and a processing terminal. A positioning unit which can be quickly connected or disconnected with a machine table is arranged on the base so that the installation position of the detector can be freely selected on the machine table. The detection device is cooperated with the light projector in use, and especially, the light penetration irradiation or reflective irradiation can be achieved by the light projector so that the detectable range of the detector can be extended, and the requirements of any detection position and environment on a production line can be met. The portable defect detector is simple in structure and convenient to position so that the detector can work at any position on the machine table, and the function that the defect detection of substrates on the production line are positioned precisely is achieved.

Description

technical field [0001] The invention relates to the field of liquid crystal display manufacture, in particular to the quality detection of liquid crystal display glass substrates. Background technique [0002] In the liquid crystal display panel production line, glass substrate breakage is the most common problem, and it is also an abnormality that is difficult to deal with and difficult to find in the production line. In this regard, each process machine is equipped with a fragment detection device to detect damaged substrates in time and prevent broken glass from entering the next machine or equipment to cause pollution. It is also an important tool to clarify the cause of fragments and reduce The range of equipment where the fragments occur makes it easy to accurately find out the source of the fragments. [0003] Fragment detection devices commonly used in current equipment mainly include linear sensors and CCD lenses, which should be installed at the required position ...

AI Technical Summary

Problems solved by technology

[0004] Both the linear sensor and the CCD lens belong to the fixed unit inspection, and due to cost reasons, the inspection equipment cannot be installed after each process of the machine, so it is difficult to determine which process the defect occurs in the machine. It can only delineate the scope but cannot lock the source of occurrence or a more specific occurrence point, and the subsequent steps often need to rely on manual monitoring

On the other hand, detection capability is limited by cost

The detection ability of linear sensors is low, while the price of CCD lenses is relatively high. Therefore, more linear sensors are installed on the production line, and CCD lenses are only used in individual positions. As a result, inspectors usually can only detect obvious fragments, and they can only detect defects such as cracks or small missing corners. prone to omissions

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