Locating device for measuring distances between dots of a...

Details Locating device for measuring distances between dots of a... Locating device for measuring distances between dots of a...

2007-06-26

2007-06-26

Nguyen, Sang H. (Department: 2886)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

C362S026000, C362S035000

Reexamination Certificate

active

10726043

ABSTRACT:
A locating device for measuring distances between dots of a light guide plate includes a sheet having a plurality of reference points marked thereon. The plurality of reference points is configured for locating of the dots during measuring, and a distribution density of the reference points is lower than a distribution of the dots. A preferred method for using a locating device to measure distances between dots of a light guide plate includes the steps of: providing the locating device having a plurality of reference points marked thereon, the plurality of reference points being configured for locating of the dots, a distribution density of the reference points being lower than a distribution density of the dots; attaching the locating device to a surface of the light guide plate that is opposite to the dots; and gauging distances between the dots using a microscope.

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