Curved display device and manufacturing method thereof
A curved display device includes a thin film transistor display unit including a first insulation substrate; a common electrode display unit disposed opposite to the thin film transistor display unit and including a second insulation substrate; a liquid crystal layer disposed between the thin film transistor display unit and the common electrode display unit; and a plurality of color filters disposed on the first insulation substrate or the second insulation substrate, where each color filter includes an overlapping compensation region, which overlaps an adjacent color filter, and a non-overlapping region, which does not overlap the adjacent color filter, the overlapping compensation region defines a stepped region having a step height with the non-overlapping region.
1. A curved display device, comprising:
a thin film transistor display unit comprising a first insulation substrate;
a common electrode display unit disposed opposite to the thin film transistor display unit, and comprising a second insulation substrate;
a liquid crystal layer disposed between the thin film transistor display unit and the common electrode display unit; and
a plurality of color filters disposed on the first insulation substrate or the second insulation substrate,
wherein each color filter defines an overlapping compensation region, which overlaps an adjacent color filter, and a non-overlapping region, which does not overlap the adjacent color filter,
the overlapping compensation region defines a stepped region having a step height with the non-overlapping region,
the step height of the stepped region defined by the overlapping compensation region varies according to a stress thereon, and
the step height of the stepped region increases as the width of the overlapping compensation region increases between the plurality of color filters.
2. The curved display device of claim 1 , wherein
the step height of the stepped region is calculated based on the following equation:
A
=
B
0.1
-
4.5
,
wherein A denotes a value of the stress expressed in kilogram force, and B denotes a value of the step height expressed in micrometer.
3. The curved display device of claim 2 , wherein
the step height of the stepped region is in a range of about 1.2 micrometers to about 1.9 micrometers.
4. The curved display device of claim 1 , wherein
a ratio of an interval between the thin film transistor display unit and the common electrode display unit at the non-overlapping region with respect to the step height of the stepped region is in a range of about 0.4 to about 0.6.
5. The curved display device of claim 4 , wherein
an interval between the thin film transistor display unit and the common electrode display unit at the stepped region is in a range of about 0.3 micrometer to about 0.9 micrometer.
6. The curved display device of claim 1 , further comprising:
a fixing member configured to maintain an interval between the thin film transistor display unit and the common electrode display unit,
wherein the step height of the stepped region gradually varies based on the fixing member.
7. The curved display device of claim 6 , wherein
the stress is concentrated in a longitudinal direction of the curved display device from a position at which the fixing member is disposed.
8. The curved display device of claim 1 , further comprising:
a thin film transistor element disposed on the first insulation substrate; and
a main column spacer disposed on a region between the first insulation substrate and the second insulation substrate and in a position at which the thin film transistor element is disposed.
9. The curved display device of claim 8 , wherein
the color filters comprise a step compensation region, and
the curved display device further comprises a sub-column spacer disposed on the step compensation region.
10. The curved display device of claim 1 , wherein
each color filter comprises a plurality of overlapping compensation regions.
11. The curved display device of claim 1 , wherein
an interval between the thin film transistor display unit and the common electrode display unit is substantially constant.
12. The curved display device of claim 11 , wherein
the second insulation substrate is disposed to be inward based on a curvature radius thereof, and
the second insulation substrate is less compressed in a longitudinal direction of the curved display device than the first insulation substrate.
13. A curved display device, comprising:
a thin film transistor display unit comprising a first insulation substrate;
a common electrode display unit disposed opposite to the thin film transistor display unit, and comprising a second insulation substrate;
a liquid crystal layer disposed between the thin film transistor display unit and the common electrode display unit;
a plurality of color filters disposed on the first insulation substrate or the second insulation substrate, wherein each color filter comprises an overlapping compensation region, which overlaps an adjacent color filter, and a non-overlapping region, which does not overlap the adjacent color filter; and
a light blocking member disposed adjacent to each color filter and overlapping the overlapping compensation region of each color filter,
wherein the light blocking member and the overlapping compensation region, which overlap each other, define a stepped region having a step height with the non-overlapping region,
wherein the step height of the stepped region defined by the overlapping compensation region varies according to a stress thereon, and
wherein the step height of the stepped region increases as the width of the overlapping compensation region increases between the plurality of color filters.
14. The curved display device of claim 13 , wherein
the step height of the stepped region is calculated based on the following equation:
A
=
B
0.1
-
4.5
,
wherein A denotes a value of the stress expressed in kilogram force, and B denotes a value of the step height expressed in micrometer.
15. The curved display device of claim 14 , wherein
the step height of the stepped region is in a range of about 1.2 micrometers to about 1.9 micrometers.
16. The curved display device of claim 13 , wherein
a ratio of an interval between the thin film transistor display unit and the common electrode display unit at the non-overlapping region with respect to the step height of the stepped region is in a range of about 0.4 to about 0.6.
17. The curved display device of claim 16 , wherein
the interval between the thin film transistor display unit and the common electrode display unit at the stepped region is in a range of about 0.3 micrometer to about 0.9 micrometer.
18. A manufacturing method of a curved display device, the method comprising:
providing a thin film transistor display unit comprising a first insulation substrate and a plurality of color filters;
providing a common electrode display unit comprising a second insulation substrate and a common electrode to be opposite to the thin film transistor display unit; and
providing liquid crystal between the thin film transistor display unit and the common electrode display unit,
wherein
adjacent color filters of the color filters overlap each other such that an overlapping compensation region is provided between the adjacent color filters,
the overlapping compensation region defines a stepped region having a step height with a non-overlapping region of the color filters,
the step height of the stepped region defined by the overlapping compensation region varies according to a stress thereon, and
the step height of the stepped region increases as the width of the overlapping compensation region increases between the plurality of color filters.
19. The method of claim 18 , wherein
the step height of the stepped region is calculated based on the following equation:
A
=
B
0.1
-
4.5
,
wherein A denotes a value of the stress in kilogram force, and B denotes a value of the step height in micrometer.
20. The curved display device of claim 19 , wherein
the step height of the stepped region is in a range of about 1.2 micrometers to about 1.9 micrometers.
21. The method of claim 18 , wherein
a ratio of an interval between the thin film transistor display unit and the common electrode display unit at the non-overlapping region with respect to the step height of the stepped region is in a range of about 0.4 to about 0.6.
22. The method of claim 21 , wherein
an interval between the thin film transistor display unit and the common electrode display unit at the stepped region is in a range of about 0.3 micrometer to about 0.9 micrometer.
23. The method of claim 18 , further comprising:
providing a thin film transistor element on the first insulation substrate; and
providing a main column spacer between the first insulation substrate and the second insulation substrate and in a position, at which the thin film transistor element is provided.
24. The method of claim 23 , further comprising:
providing a step compensation region using the color filter; and
providing a sub-column spacer on the step compensation region.