Display device with touch detection function and electronic apparatus
View Patent ↗According to an aspect, a display device with a touch detection function includes: a substrate; a display area in which pixels each constituted by different color regions are arranged in a matrix and that includes color columns in which the color regions of the same colors extend side by side; a touch detection electrode that includes a plurality of conductive thin wires; and a drive electrode. Each of the conductive thin wires includes a plurality of portions at each of which the conductive thin wire extends in a direction at an angle with respect to a direction of extension of the color regions, and a plurality of bent portions at each of which the conductive thin wire is bent with the angle changed. The conductive thin wires include portions each overlapping all of the color columns in a direction orthogonal to the surface of the substrate.
1. A display device with a touch detection function comprising:
a substrate;
a display area in which pixels each constituted by a plurality of different color regions corresponding to a plurality of different colors are arranged in a matrix in a plane parallel to a surface of the substrate and that includes color columns in each of which the color regions of a same color extend side by side;
a touch detection electrode that includes a plurality of conductive thin wires extending in a plane parallel to the surface of the substrate; and
a drive electrode that has electrostatic capacitance with respect to the touch detection electrode, wherein
each of the conductive thin wires is made of a light-shielding metallic material,
a direction of extension of the touch detection electrode is equal to a direction of extension of the color columns,
each of the conductive thin wires includes a plurality of line portions at each of which the conductive thin wires extend in a direction at an angle with respect to the direction of extension of the color columns, and a plurality of bent portions at each of which the conductive thin wires are bent with the angle changed,
in each conductive thin wire, each line portion is sandwiched between adjacent bent portions,
each line portion included in each of the conductive thin wires includes portions each overlapping all of the plurality of different colors in a direction orthogonal to the surface of the substrate,
each of the conductive thin wires has a width less than d, where a direction orthogonal to the direction of extension of the color columns of the same colors in the plane parallel to the surface of the substrate is defined as a color region orthogonal direction, and a width in the color region orthogonal direction of each of the color regions is denoted by d,
P has a different length from b, where an interval between adjacent conductive thin wires in the color region orthogonal direction is denoted by P, and a length of an offset in the color region orthogonal direction from one of the bent portions to another bent portion next to the bent portion in the same one of, and on the same side of, the conductive thin wires is denoted by b,
the adjacent conductive thin wires include a first conductive thin wire and a second conductive thin wire adjacent to the first conductive thin wire,
a color of the color region at a first bent portion included in the first conductive thin wire is different from a color of the color region at a second bent portion included in the second conductive thin wire, the first bent portion and the second bent portion being at the same position in the direction of extension of the color columns, and
the following formulas (2a) and (2b) are satisfied:
b<P (2a), and
b> 3 d (2b).
2. The display device with the touch detection function according to claim 1 , further satisfying the following formula (1):
P<b+d (1).
3. The display device with the touch detection function according to claim 2 , wherein
at least one of the conductive thin wires has a plurality of the lengths b, the lengths b being different from each other, and
b in the formula (1) is a minimum length of the lengths b.
4. The display device with the touch detection function according to claim 1 , further satisfying the following formula (3):
P≤ 160 μm (3).
5. The display device with the touch detection function according to claim 1 , wherein
the conductive thin wires each have a zigzag-line shape in which the line portions and the bent portions are alternately arranged.
6. The display device with the touch detection function according to claim 1 , wherein
an angle of each line portion with respect to the direction of extension of the color columns of the same color is in a range of 30 degrees to 40 degrees, or 50 degrees to 60 degrees.
7. The display device with the touch detection function according to claim 1 , wherein
at least one of the conductive thin wires has a plurality of the lengths b, the lengths b being different from each other.
8. The display device with the touch detection function according to claim 1 , wherein
at least one of the conductive thin wires has a plurality of the lengths b, the lengths b being different from each other, and
b in the formula (2a) is a minimum length of the lengths b.
9. An electronic apparatus comprising:
a display device with a touch detection function that comprises:
a substrate;
a display area in which pixels each constituted by a plurality of different color regions corresponding to a plurality of different colors are arranged in a matrix in a plane parallel to a surface of the substrate and that includes color columns in each of which the color regions of a same color extend side by side;
a touch detection electrode that includes a plurality of conductive thin wires extending in a plane parallel to the surface of the substrate; and
a drive electrode that has electrostatic capacitance with respect to the touch detection electrode, wherein
each of the conductive thin wires is made of a light-shielding metallic material,
a direction of extension of the touch detection electrode is equal to a direction of extension of the color columns,
each of the conductive thin wires includes a plurality of line portions at each of which the conductive thin wires extend in a direction at an angle with respect to the direction of extension of the color columns, and a plurality of bent portions at each of which the conductive thin wires are bent with the angle changed,
in each conductive thin wire, each line portion is sandwiched between adjacent bent portions,
each line portion included in each of the conductive thin wires includes portions each overlapping all of the plurality of different colors in a direction orthogonal to the surface of the substrate,
each of the conductive thin wires has a width less than d, where a direction orthogonal to the direction f extension of the color columns of the same colors in the plane parallel to the surface of the substrate is defined as a color region orthogonal direction, and a width in the color region orthogonal direction of each of the color regions is denoted by d,
P has a different length from b, where an interval between adjacent conductive thin wires in the color region orthogonal direction is denoted by P, and a length of an offset in the color region orthogonal direction from one of the bent portions to another bent portion next to the bent portion in the same one of, and on the same side of, the conductive thin wires is denoted by b,
the adjacent conductive thin wires include a first conductive thin wire and a second conductive thin wire,
a color of the color region at a first bent portion included in the first conductive thin wire is different from a color of the color region at a second bent portion included in the second conductive thin wire, the first bent portion and the second bent portion being at the same position in the direction of extension of the color columns, and
the following formulas (2a) and (2b) are satisfied:
b<P (2a), and
b> 3 d (2b).