LIQUID CRYSTAL DISPLAY DEVICE
First Claim
1. A display device comprising:
- a first substrate;
a source electrode of a switching element provided on the first substrate;
an organic film provided on the source electrode;
a first electrode provided on the organic film and connected with the source electrode; and
a second substrate opposed to the first substrate,wherein the organic film has a hole that connects the source electrode and the first electrode,a diameter of the hole at a first position where the source electrode and the first electrode are connected is smaller than a diameter of the hole at a second position that is closer to the second substrate than the first position,in a cross-sectional view, a width of the source electrode is smaller than the diameter at the second position of the hole, andthe first electrode has an end portion that is located between the first position of the hole and the second position of the hole.
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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
7 Claims
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1. A display device comprising:
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a first substrate; a source electrode of a switching element provided on the first substrate; an organic film provided on the source electrode; a first electrode provided on the organic film and connected with the source electrode; and a second substrate opposed to the first substrate, wherein the organic film has a hole that connects the source electrode and the first electrode, a diameter of the hole at a first position where the source electrode and the first electrode are connected is smaller than a diameter of the hole at a second position that is closer to the second substrate than the first position, in a cross-sectional view, a width of the source electrode is smaller than the diameter at the second position of the hole, and the first electrode has an end portion that is located between the first position of the hole and the second position of the hole. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification