Pixel electrode structure for a liquid crystal display with a high aperture ratio
AssigneeHannstar Display Corp.
InventorsHsiang-Lung Liu, Hsu-Ho Wu
Life of this patent
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Abstract
A pixel electrode structure for a liquid crystal display with a high aperture ratio increases the aperture ratio and eliminates Mura phenomenon. Any two adjacent pixel electrodes are disconnected to each other. Each pixel electrode comprises a first-lengthwise periphery that overlaps a first-adjacent data line to form a first overlapping portion, and a second-lengthwise periphery that overlaps a second-adjacent data line to form a second overlapping portion. The first-lengthwise periphery and the second-lengthwise periphery have an identical triangle-wave profile and are symmetrical to each other. The triangle-wave profile is formed by connecting a plurality of right-angled and equilateral triangles.
Claims14
A pixel electrode structure for a liquid crystal display with a high aperture ratio, comprising:
- a first substrate and a second substrate disposed parallel to each other, in which an internal space is formed between the interior surface of the first substrate and the interior surface of the second substrate;
- a liquid crystal layer formed in the internal space;
- at least one polarizer formed on the exterior surface of the first substrate or the exterior surface of the second substrate;
- a plurality of parallel gate lines transversely formed on the interior surface of the first substrate;
- a plurality of parallel data lines vertically formed on the interior surface of the first substrate;
- and
- a plurality of pixels defined by the gate line and the data lines in a matrix, in which each pixel comprises at least one TFT formed on the interior surface of the first substrate and near the intersection of the gate line and the data line, a common electrode formed on the interior surface of the second substrate and covering the pixel, and a pixel electrode formed on the interior surface of the first substrate and covering the pixel;
- wherein, two adjacent pixel electrodes are disconnected to each other;
- wherein, each pixel electrode comprises a first-lengthwise periphery that overlaps a first-adjacent data line to form a first overlapping portion, and a second-lengthwise periphery that overlaps a second-adjacent data line to form a second overlapping portion;
- wherein, the first-lengthwise periphery and the second-lengthwise periphery have an identical triangle-wave profile and are symmetrical to each other;
- and
- wherein, the triangle-wave profile is formed by connecting a plurality of right-angled and equilateral triangles.
A pixel electrode structure for a liquid crystal display with a high aperture ratio, comprising:
- a first substrate and a second substrate disposed parallel to each other, in which an internal space is formed between the interior surface of the first substrate and the interior surface of the second substrate;
- a liquid crystal layer formed in the internal space;
- at least one polarizer formed on the exterior surface of the first substrate or the exterior surface of the substrate;
- a plurality of parallel gate lines traversing the interior surface of the first substrate;
- a plurality of lengthwise parallel data lines on the interior surface of the first substrate;
- and
- a plurality of pixels defined by the gate line and the data lines and in a matrix, in which each pixel comprises at least one TFT formed on the interior surface of the first substrate and near the intersection of the gate line and the data line, a common electrode formed on the interior surface of the second substrate and covering the pixel, and a pixel electrode formed on the interior surface of the first substrate and covering the pixel;
- wherein, two adjacent pixel electrodes are disconnected to each other;
- wherein, each pixel electrode comprises a first-lengthwise periphery that overlaps a first-adjacent data line to form a first overlapping portion, and a second-lengthwise periphery that overlaps a second-adjacent data line to form a second overlapping portion;
- wherein, the first-lengthwise periphery and the second-lengthwise periphery have an identical square-wave profile, and the square-wave profile is formed by connecting a square protrusion and a square indentation in sequence;
- and
- wherein, the square protrusion of the first-lengthwise periphery corresponds in position to the square indentation of the second-lengthwise periphery, and the square indentation of the first-lengthwise periphery corresponds in position to the square protrusion of the second-lengthwise periphery.
Dependencies are inferred from the claim text.