Upper substrate and liquid crystal display device having the same
View Patent ↗A liquid crystal display apparatus includes a lower substrate, an upper substrate and a liquid crystal layer interposed between the lower substrate and the upper substrate. The lower substrate includes a display part for displaying image and a driving part for providing the display part with a driving signal. The upper substrate includes a common electrode and an insulating member that electrically insulates the common electrode from the driving part. The insulating member has a lower dielectric constant than the liquid crystal layer. Thus, a parasitic capacitance between the driving part and the common electrode is reduced to prevent malfunction of the driving part, and a display quality is enhanced.
1. A liquid crystal display apparatus comprising:
a lower substrate including:
a display part which displays an image; and
a driving part which drives the display part, the driving part including a conducting layer which electrically connects a first conductive pattern to a second conductive pattern disposed at a different layer than the first conductive pattern;
an upper substrate including:
a common electrode; and
an insulating member which protrudes toward the lower substrate and contacts the conducting layer; and
a liquid crystal layer that is interposed between the lower substrate and the upper substrate.
2. The liquid crystal display apparatus of claim 1 , wherein the insulating member has a lower dielectric constant than the liquid crystal layer.
3. The liquid crystal display apparatus of claim 1 , further comprising a cell gap retaining member disposed between the lower substrate and the upper substrate so as to maintain the cell gap between the lower substrate and the upper substrate.
4. The liquid crystal display apparatus of claim 3 , wherein the insulating member and the cell gap retaining member comprise a photosensitive acryl resin.
5. The liquid crystal display apparatus of claim 1 , wherein the lower substrate further comprises a photosensitive organic insulating layer disposed between the second conductive pattern and the conducting layer, and the photosensitive organic insulating layer includes a first contact hole for exposing the first conductive pattern and a second contact hole for exposing the second conductive pattern.
6. The liquid crystal display apparatus of claim 5 , wherein the conducting layer is electrically connected to the first and second conductive patterns via the first and second contact holes, respectively, so as to electrically connect the first conductive pattern to the second conductive pattern.
7. The liquid crystal display apparatus of claim 6 , wherein the conducting layer is optically transparent.
8. The liquid crystal display apparatus of claim 7 , wherein the conducting layer is formed of the same material as a transparent electrode of the display part.
9. The liquid crystal display apparatus of claim 1 , wherein the insulating member has a width no less than the conductive layer, and entirely covers the conductive layer.