Method for aligning a phase retardation plate with a display panel

摘要

An embodiment of the present invention provides a method for aligning a phase retardation plate with a display panel comprising the following steps: S1: determining the positions of a first reference line on the phase retardation plate and a second reference line on the display panel, wherein the first reference line is the central line between the first and second ends of the phase retardation area, and the second reference line is the central line between the third and fourth ends of the display area; S2: obtaining a positional deviation between the first reference line and the second reference line by calculation; S3: adjusting the relative position between the phase retardation plate and the display panel according to the positional deviation.

主权项

1. A method for aligning a phase retardation plate with a display panel, wherein the phase retardation plate has a phase retardation area comprising a plurality of strip-shaped phase retardation regions sequentially arranged in a width direction, any two adjacent strip-shaped phase retardation regions are different in phase retardation, the display panel has a display area comprising a plurality of strip-shaped display regions respectively corresponding to the strip-shaped phase retardation regions of the phase retardation plate and a peripheral region outside the display area, a first end and a second end, in the width direction, of the phase retardation area of the phase retardation plate are correspond respectively to a third end and a fourth end of the display area of the display panel, comprising the following steps:
S1: determining the positions of a first reference line on the phase retardation plate and a second reference line on the display panel, wherein the first reference line is the central line between the first and second ends of the phase retardation area, and the second reference line is the central line between the third and fourth ends of the display area, wherein the step of determining the positions of the first reference line on the phase retardation plate is performed by using a CCD image sensor for polarized light which is capable of detecting alternately bright and dark stripes corresponding to the respective strip-shaped phase retardation regions of the phase retardation plate; S2: obtaining a positional deviation between the first reference line and the second reference line by calculation; S3: adjusting the relative position between the phase retardation plate and the display panel according to the positional deviation, so as to align the phase retardation plate with the display panel, wherein the CCD image sensor for polarized light comprises a image pickup device, a circular polarizing filter and a linear polarizing plate, wherein the circular polarizing filter is provided between the phase retardation plate and the image picker, and the linear polarizing plate is provided between the phase retardation and the display panel.