LIQUID CRYSTAL DISPLAY DEVICE
First Claim
1. A display device comprising:
- a first substrate including a first electrode, an organic film formed over the first electrode, and a TFT electrically connected to the first electrode,wherein a through hole is formed in the organic film, and arranged over the first electrode,wherein a diameter of an upper portion of the through hole is greater than a diameter of a lower portion of the through hole, andwherein a taper angle of the upper portion of the through hole is smaller than a taper angle of the lower portion which is arranged between the upper portion and the first substrate.
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Accused Products
Abstract
in a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole.
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Citations
20 Claims
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1. A display device comprising:
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a first substrate including a first electrode, an organic film formed over the first electrode, and a TFT electrically connected to the first electrode, wherein a through hole is formed in the organic film, and arranged over the first electrode, wherein a diameter of an upper portion of the through hole is greater than a diameter of a lower portion of the through hole, and wherein a taper angle of the upper portion of the through hole is smaller than a taper angle of the lower portion which is arranged between the upper portion and the first substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A display device comprising:
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A first substrate including an organic film, a first electrode formed on the organic film, an insulating film formed on the first electrode, a second electrode formed on the insulating film, a TFT having a source electrode, and a through hole that is formed in the organic film, wherein the through hole has an upper portion and a lower portion in the organic film, wherein a diameter of the upper portion of the through hole formed in the organic film is greater than a diameter of the lower portion, wherein a taper angle of the upper portion of the through hole formed in the organic film is smaller than a taper angle of the lower portion. - View Dependent Claims (19, 20)
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Specification