Liquid crystal display device and method for manufacturing thereof
View Patent ↗The present invention relates to a liquid crystal display that maintains a more uniform cell gap and improves adherence between two display panels by improving adhesion between substrates and their bead spacers, as well as a manufacturing method thereof. An exemplary liquid crystal display includes: a first substrate and a second substrate facing each other; a bead spacer comprising a plurality of beads and a first adhesive coupling the beads to the first substrate; a second adhesive corresponding to the bead spacer and disposed on the second substrate so as to contact the bead spacer; and a liquid crystal layer disposed between the first substrate and the second substrate.
1. A liquid crystal display comprising:
a first substrate and a second substrate facing each other;
a bead spacer comprising a plurality of beads and a first adhesive coupling the beads to each other and to the first substrate;
a second adhesive corresponding to the bead spacer and disposed on the second substrate so as to contact the bead spacer; and
a liquid crystal layer disposed between the first substrate and the second substrate;
wherein the first adhesive and the second adhesive are made of material that does not react with the liquid crystal layer, the material including an epoxy group with a content of metal ions of less than about 10ppb.
2. The liquid crystal display of claim 1 , wherein
the first adhesive and the second adhesive are made of the same material.
3. The liquid crystal display of claim 2 , wherein
the first adhesive and the second adhesive are a thermosetting adhesive.
4. The liquid crystal display of claim 1 , wherein
the first substrate and the second substrate are flexible substrates.
5. The liquid crystal display of claim 1 , further comprising color filters and a light blocking member positioned between the color filters, wherein the bead spacer is positioned on the light blocking member.
6. A method of manufacturing a liquid crystal display comprising:
(a) forming a bead spacer on the first substrate, the bead spacer comprising a plurality of beads mixed with, and coupled to each other by, a first adhesive;
(b) forming a second adhesive on the second substrate at a position corresponding to the bead spacer, wherein the first adhesive and the second adhesive are made of material that does not react with the liquid crystal laver, the material including an epoxy group with a content of metal ions of less than about 10ppb;
(c) forming a liquid crystal layer between the first substrate and the second substrate, and combining the first substrate and the second substrate; and
(d) hardening the bead spacer and the second adhesive.
7. The method of claim 6 , wherein
in (a) and (b), the bead spacer and the second adhesive are each formed by a printing method.
8. The method of claim 6 , wherein
the first adhesive and the second adhesive are made of the same material.
9. The method of claim 8 , wherein
the first adhesive and the second adhesive are a thermosetting adhesive.
10. The method of claim 6 , wherein
the first substrate and the second substrate are flexible substrates.
11. The method of claim 6 , wherein (a) further comprises forming the bead spacer on a light blocking member formed on the first substrate.