Method for manufacturing liquid crystal display
View Patent ↗The present invention relates to a method for manufacturing a liquid crystal display utilizing the dispense-injection method, and it is an object of the invention to provide a method for manufacturing a liquid crystal display which allows an optimum quantity of liquid crystals to be dispensed on each substrate. At a dispense-injection step, in the case of a two-shot process for fabricating two liquid crystal display panels from a single glass substrate 80 , the heights of support posts on two CF substrates 82 (let us call them surfaces A and B) having columnar spacers formed thereon are measured at a plurality of points (e.g., five locations indicated by numerals 1 through 5 ) on each of the surfaces A and B using a laser displacement gauge and an average value of the height is obtained. The support post height of the columnar spacers is thus measured in advance to control the quantity of dispensed liquid crystals based on the measured value.
1. An apparatus for dispensing liquid crystals, comprising:
a dispenser for dispensing liquid crystals on at least one substrate with an optimum quantity; and
a support post height measuring apparatus measuring support post heights of a plurality of spacers;
wherein said optimum quantity is dispensed by said dispenser as a result of said measurements of the support post heights of the spacers based on a predetermined relationship between a quantity to be dispensed and an average value of the support post heights of the spacers.
2. An apparatus for dispensing liquid crystals according to claim 1 , wherein the dispenser is able to adjust at least one of a quantity per shot or a number of shots of liquid crystal.
3. An in-line processing apparatus used in a method for manufacturing a liquid crystal display, comprising:
a support post height measuring apparatus measuring support post heights in a plurality of spacers formed on one of two substrates;
a dispenser for dispensing liquid crystals on at least one substrate with an optimum quantity; and
a seal drawing section for drawing a main seal for sealing liquid crystals on one of the substrates,
wherein said optimum quantity is dispensed by said dispenser as a result of said measurements of the support post heights of the spacers based on a predetermined relationship between a quantity to be dispensed and an average value of the support post heights of the spacers.