Alignment inspection device and method for liquid crystal display panel

The invention provides an alignment inspection device and method for a liquid crystal display panel. The alignment inspection device for the liquid crystal display panel comprises light sources, an alignment CCD camera (50) and a transparent fixed disc (60) located below the alignment CCD camera (50...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHANG YONG, HE GONGYU, LI DINGLIANG
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention provides an alignment inspection device and method for a liquid crystal display panel. The alignment inspection device for the liquid crystal display panel comprises light sources, an alignment CCD camera (50) and a transparent fixed disc (60) located below the alignment CCD camera (50); the light sources comprise the upper light source located above the transparent fixed disc (60) and the lower light source located below the transparent fixed disc (60); a circle of reflecting film (61) is arranged on the edge of the lower surface of the transparent fixed disc (60). As the upper light source and the lower light source provide a vertical illumination mode and a transmission illumination mode respectively, the alignment marker recognition rate of the alignment CCD camera can be effectively increased, and alignment detection accuracy of the alignment CCD camera can be effectively improved. According to the alignment inspection method for the liquid crystal display panel, when alignment markers are overlapped with the edge of the transparent fixed disc, by the adoption of the mode of combining vertical illumination and transmission illumination, the alignment marker recognition rate of the alignment CCD camera can be effectively increased, and the alignment detection accuracy is high.