Display panel inspection apparatus and display panel inspection method

Abstract

It is an object of the present invention to provide a display panel inspection apparatus and an inspection method capable of remarkably reducing equipment cost and shortening inspection time. The apparatus comprises: an image measurement unit (10) which lights a display panel (work) in response to a test signal and pick up an image of the lighted display panel, thereby obtaining image measurement data; a data accumulating unit (20) for accumulating the image measurement data of a plurality of display panels as data corresponding to the respective display panels; and a data processing unit (30) which respectively reads out the image measurement data accumulated in the data accumulating unit and performs image processing so as to judge the quality of each display panel. When inspecting a plurality of display panels, the image measurement unit and the data processing unit perform inspections independently. The image measurement unit operates to output identification data for identifying the respective display panels acting as measurement objects and image measurement data to the data accumulating unit, while the data accumulating unit forms a data base for managing the identification data and the image measurement data corresponding to the identification data.

Description

technical field [0001] The invention relates to a display panel inspection device and inspection method. Background technique [0002] For display panels such as plasma display panels, liquid crystal display panels, and organic EL panels, the display panels after forming the panels are subjected to uneven brightness for white light emission, bright spots for black display, uneven color display, pixel defects, and edge tests (relative to The quality control of the finished product is carried out based on the inspection of the input signal amount (luminescence amount) and the like. [0003] As the display panel inspection device used at this time, use such as figure 1 In the shown device, the device has an inspection table J2 carrying a display panel J1. On the left and right sides of the inspection table J2, an unloader J3 that removes the display panel J1 that has been inspected from J2, and a new one that is to be inspected are arranged. The display panel J1 is installed ...

AI Technical Summary

Problems solved by technology

[0006] In the inspection of such a conventional display panel inspection device, there is a large amount of detection information accompanying the high definition and large screen of the display panel, or with the above-mentioned uneven brightness, bright spots, uneven color display, pixel defects, edge The number of inspection items such as inspection increases, and the processing of the data processing unit takes a lot of time after the image inspection data is acquired by the CCD camera.

In addition, since the display panel is placed on the display panel inspection device until the processing of the data processing unit is completed and the quality is judged to be acceptable or not, there is a standby state in which the display panel is placed, so this will greatly affect the quality of the display panel. The production tact of the inspection device cannot perform inspection processing with high productivity

[0007] Moreover, in order to meet the production time requirements of display panel production and the entire inspection and testing line even with this display panel inspection device, it is necessary to introduce multiple identical display panel inspection devices, which will cause problems due to installation space and device unit price. The problem of high equipment investment

In addition, in the process of panel production, if there is a discrepancy between the planned production time and the required panel production time, it is necessary to add a display panel inspection device, so there are problems in device debugging, installation space, device price, etc. , it is unavoidable to increase the amount of additional investment, and the problem of not being able to obtain the degree of freedom of production adjustment

[0008] In addition, when multiple display panel inspection devices are used, adjustments when acquiring image inspection data become complicated, and detection deviations due to machine differences are likely to occur, which is not conducive to quality control

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