Optical display including a light shielding layer having printed patterns
An optical display includes an optical display element including a second substrate, a first substrate facing the second substrate, a dummy region and a metal interconnection layer thereon. A first polarizing plate on an upper surface of the optical display element has a light shielding layer therein including printed patterns separated from each other. A first printed layer includes a first point at an interface between the display and non-display regions and a second point at a vertex closest to the first point. A second printed layer includes a third point at the interface and a fourth point at a vertex closes to the third point. The light shielding layer satisfies H≤P/2, where H is a minimum value among a distance from the interface to the second point and a distance from the interface to the fourth point, and P is a width of the dummy region.
1. An optical display having a display region and a non-display region, the optical display comprising:
an optical display element comprising a second substrate, a first substrate facing the second substrate, a dummy region on the first substrate, and a metal interconnection layer on the first substrate; and
a first polarizing plate on an upper surface of the optical display element, the first polarizing plate having a light shielding layer therein to conceal at least a portion of the metal interconnection layer and at least a portion of the dummy region,
wherein:
the light shielding layer comprises a plurality of printed patterns separated from each other and each printed pattern of the plurality of printed patterns comprises a first printed layer,
the first printed layer of a first printed pattern of the plurality of printed patterns comprises a first point at an interface between the display region and the non-display region,
the first printed layer of the first printed pattern comprises a second point at a vertex of the first printed layer that is closest to the first point,
the first printed layer of a second printed pattern of the plurality of printed patterns adjacent to the first printed layer of the first printed pattern comprises a third point at the interface,
the first printed layer of the second printed pattern comprises a fourth point at a vertex of the first printed layer of the second printed pattern that is closest to the third point, and
the first printed layer of the first printed pattern and the first printed pattern of the second printed pattern satisfy Equation 1:
H≤P/ 2, Equation 1
wherein H is a non-zero minimum value among a distance from the interface between the display region and the non-display region to the second point and a distance from the interface between the display region and the non-display region to the fourth point, and P is a width of the dummy region,
wherein, in a plan view of the optical display, the first printed layer of the first printed pattern in the non-display region is spaced apart from the first printed layer of the second printed pattern in the non-display region along a direction parallel to the interface between the display region and the non-display region by a gap, the gap extending lengthwise in a direction perpendicular to the interface,
wherein the first printed layer has a regular hexagonal shape, and
wherein the first printed layer of the first printed pattern and the first printed layer of the second printed pattern are co-planar.
2. The optical display according to claim 1 , wherein H is about 200 μm or less.
3. The optical display according to claim 1 , wherein P is about 400 μm or less.
4. The optical display according to claim 1 , wherein the plurality of printed patterns satisfies Equation 2: Equation 2 0.1×W H 0.5×W, wherein W is a distance from the first point to the third point.
5. The optical display according to claim 1 , wherein each of the plurality of printed patterns comprises the first printed layer and a second printed layer directly on the first printed layer,
wherein the second printed layer of the first printed pattern comprises a fifth point closest to the interface between the display region and the non-display region, and
wherein a shortest distance between the fifth point and the first point is 200 μm or less.
6. The optical display according to claim 5 , wherein the first printed layer has a regular hexagonal shape and the second printed layer has a rhombic, square, or amorphous shape.
7. The optical display according to claim 1 , wherein the first polarizing plate comprises a polarizer and a bonding layer and a first polarizer protective film sequentially stacked on one surface of the polarizer, and wherein the light shielding layer is on one surface of the first polarizer protective film and embedded in the bonding layer.
8. The optical display according to claim 1 , wherein the light shielding layer has a thickness of about 4 μm or less.
9. The optical display according to claim 1 , wherein the light shielding layer comprises at least one of carbon black and a mixed pigment of silver-tin alloys.
10. The optical display according to claim 1 , wherein the first polarizing plate is at a side of the first substrate of the optical display element.
11. The optical display according to claim 10 , wherein each of the first substrate and the first polarizing plate extends beyond the second substrate.
12. The optical display according to claim 11 , wherein the first polarizing plate comprises a main body facing the first substrate and an extended portion directly connected to the main body and not facing the first substrate, and wherein the light shielding layer is in the extended portion and a portion of the main body.
13. The optical display according to claim 11 , wherein the first substrate comprises a main body facing the second substrate and an extended portion directly connected to the main body and not facing the second substrate, and wherein the metal interconnection layer comprises a first metal interconnection layer on the main body of the first substrate and a second metal interconnection layer on the extended portion of the first substrate.
14. The optical display according to claim 13 , wherein the dummy region is between the first metal interconnection layer and a pixel region constituting the display region of the first substrate.
15. The optical display according to claim 13 , wherein the light shielding layer faces the first metal interconnection layer, the second metal interconnection layer, and a portion of the dummy region.
16. The optical display according to claim 13 , wherein the light shielding layer faces the first metal interconnection layer, the second metal interconnection layer, and an entirety of the dummy region.
17. The optical display according to claim 1 , further comprising a second polarizing plate on a lower surface of the optical display element.
18. The optical display according to claim 1 , wherein the optical display element comprises a liquid crystal panel comprising a liquid crystal layer or a light emitting diode substrate comprising a luminous material.