Liquid crystal display device and method of manufacturing the same
First Claim
1. A liquid crystal display device comprising:
- a pair of transparent substrates sandwiching a liquid crystal layer;
one of the pair of transparent substrates on the liquid crystal layer side being provided with;
a plurality of scan lines and a plurality of signal lines disposed in a matrix in a display region;
a switching element provided near an intersection of the plurality of scan lines and the plurality of signal lines;
a common line formed along a periphery portion of the display region;
a planarization film formed over at least the whole display region;
a first electrode formed on a surface of the planarization film;
an insulator formed on the first electrode; and
a second electrode formed on the insulator and having a plurality of slits for each position corresponding to a region divided by the plurality of scan lines and the plurality of signal lines;
the second electrode being electrically connected with the common line or the switching element via a first contact hole formed on the insulator and the planarization film;
the first electrode being electrically connected with the switching element or the common line, different from the common line or the switching element with which the second electrode is electrically connected, via an interface-structured conductive path, formed of a material used for forming the second electrode, formed via a second contact hole on the insulator, a surface of the insulator, and a third contact hole formed on the insulator and the planarization film.
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Accused Products
Abstract
A method of manufacturing a liquid crystal display device 10A according to an embodiment of the present invention includes: forming a pixel electrode 19a for each sub-pixel on the surface of a planarization film 18, forming an insulator 20 over the whole surface, simultaneously forming first to third contact holes 21a to 21c so that a drain electrode D, a connection portion 161 of a common line, and the pixel electrode 19a are exposed from the surface of the insulator 20, forming a film of a transparent conductive material over the whole surface, forming a common electrode 22a including a plurality of slits for each sub-pixel, and connecting the common electrode 22 and the connection portion 161 via the first contact hole 21a and connecting the pixel electrode 19a and the drain electrode D via an interface-structured conductive path 23 formed via the second contact hole 21b, the surface of the insulator 20, and the third contact hole 21c. Accordingly, the invention provides an FFS mode liquid crystal display device and a method of manufacturing the same in which the plurality of contact holes can be formed simultaneously in a single step and the pixel electrode and the common electrode are disposed on the planarization film.
26 Citations
8 Claims
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1. A liquid crystal display device comprising:
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a pair of transparent substrates sandwiching a liquid crystal layer; one of the pair of transparent substrates on the liquid crystal layer side being provided with; a plurality of scan lines and a plurality of signal lines disposed in a matrix in a display region; a switching element provided near an intersection of the plurality of scan lines and the plurality of signal lines; a common line formed along a periphery portion of the display region; a planarization film formed over at least the whole display region; a first electrode formed on a surface of the planarization film; an insulator formed on the first electrode; and a second electrode formed on the insulator and having a plurality of slits for each position corresponding to a region divided by the plurality of scan lines and the plurality of signal lines; the second electrode being electrically connected with the common line or the switching element via a first contact hole formed on the insulator and the planarization film; the first electrode being electrically connected with the switching element or the common line, different from the common line or the switching element with which the second electrode is electrically connected, via an interface-structured conductive path, formed of a material used for forming the second electrode, formed via a second contact hole on the insulator, a surface of the insulator, and a third contact hole formed on the insulator and the planarization film. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of manufacturing a liquid crystal display device, the method comprising:
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(1) preparing a first transparent substrate including a plurality of scan lines and a plurality of signal lines formed in a matrix in a display region, a switching element provided near an intersection of the plurality of scan lines and the plurality of signal lines, and a common line formed along a periphery portion of the display region; (2) forming a planarization film at least over the whole display region of the first transparent substrate; (3) forming a first electrode on a surface of the planarization film; (4) forming an insulator over a whole surface of the resulting first transparent substrate after (3); (5) forming first and third contact holes in the insulator and the planarization film to expose the switching element and the common line, and forming a second contact hole in the insulator to expose the first electrode; (6) forming a film formed of a conductive material over the whole surface of the resulting transparent substrate after (5), forming by etching a second electrode including a plurality of slits for each position corresponding to a region divided by the plurality of scan lines and the plurality of signal lines, electrically connecting the second electrode and the switching element or the common line via the first contact hole, and electrically connecting the first electrode and the common line or the switching element via an interface-structured conductive path formed via the second contact hole, a surface of the insulator, and the third contact hole, and (7) disposing a second transparent substrate to face a surface of the resulting first transparent substrate after (6) at a predetermined distance, and encapsulating a liquid crystal between the first and second transparent substrates.
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Specification