Apparatus and method for pressing and combining two substrates of a LCD panel
AssigneeHannstar Display Corp.
InventorsLi-Yi Chen, GowZin Yiu
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Abstract
A method for controlling gap widths of a cell gap of an LCD panel and a relevant apparatus are provided. When a front substrate and a rear substrate of an LCD panel are being pressed to combine together before a sealant between hardens, gap widths at several measured points located on the front or rear substrate are monitored to provide a reference for modifying a parameter distribution, thereby fine-tuning the gap widths. Therefore, gap widths, equivalent to the uniformity of the cell gap, can meet the manufacturer's requirement, and LCD panel yields are increased.
Claims16
A method for controlling gap widths, applied during the combining of a first substrate and a second substrate, the first substrate having a plurality of measured points, the gap widths lying between the first and second substrates at the measured points, the method comprising:
- providing a parameter distribution for pressing and combining the first and second substrates;
- measuring, during pressing and combining the first and second substrates, the gap widths;
- and
- modifying, when the gap widths don't meet a predetermined requirement, the parameter distribution to adjust the gap widths.
A apparatus for pressing and combining a first substrate and a second substrate, comprising:
- a controller for controlling a parameter distribution;
- a pressing means controlled by the parameter distribution to press and combine the first and second substrates;
- and
- a monitoring means for measuring gap widths between the first and the second substrates, each gap width corresponding to one of measured points on the first substrate;
- wherein, when the gap widths don't meet a predetermined requirement, the controller changes the parameter distribution and, subsequently, modifies the gap widths.
Dependencies are inferred from the claim text.