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US 6,191,832 B1Granted
Active matrix display device and methods for correcting defect thereof
AssigneeSharp Kabushiki Kaisha
InventorYukihiko Nakakura
Life of this patent
Estimating the term…
Abstract
An active matrix display device of the present invention includes: a plurality of pixel electrodes arranged in a matrix; a plurality of switching elements connected to the respective pixel electrodes; a plurality of scanning lines for supplying a scan voltage to the switching elements; a plurality of signal lines for supplying a signal voltage to the switching elements, provided so as to cross the scanning lines; and a bypass spare line for avoiding at least one of a disconnected portion and a leak portion, formed so as to overlap at least one of the scanning line and the signal line with an insulating film interposed therebetween, wherein the bypass spare line and at least one of the scanning line and the signal line are electrically connected to each other.
Claims33
An active matrix display device comprising:
- a plurality of pixel electrodes arranged in a matrix;
- a plurality of switching elements connected to the respective pixel electrodes;
- a plurality of scanning lines for supplying a scan voltage to the switching elements;
- a plurality of signal lines for supplying a signal voltage to the switching elements, provided so as to cross the scanning lines;
- an insulating film between the matrix of pixel electrodes and the scanning lines and signal lines, and
- a bypass spare line for avoiding at least one of a disconnected portion and a leak portion, formed so as to overlap at least one of the scanning line and the signal line with the insulating film interposed between the bypass spare line and the at least one of the scanning line and the signal line, and the bypass spare line and pixel electrodes being on a same side of the insulating film;
- wherein the bypass spare line and at least one of the scanning line and the signal line are electrically connected to each other.
4 more elements
A method for correcting a defect of an active matrix display device comprising:
- a plurality of pixel electrodes arranged in a matrix;
- a plurality of switching elements connected to the respective pixel electrodes;
- a plurality of scanning lines for supplying a scan voltage to the switching elements;
- a plurality of signal lines for supplying a signal voltage to the switching elements, provided so as to cross the scanning lines;
- an insulating film between the matrix of pixel electrodes and the scanning lines and signal lines, and
- a bypass spare line for avoiding at least one of a disconnected portion and a leak portion, formed so as to overlap at least one of the scanning line and the signal line with the insulating film interposed between the bypass spare line and the at least one of the scanning line and the signal line, and the bypass spare line and the pixel electrodes being on a same side of the insulating film, and
- wherein the bypass spare line and at least one of the scanning line and the signal line are electrically connected to each other, and wherein
- the method comprising the steps of:
- determining the presence of a leak at the intersection of the scanning line end the signal line;
- and
- cutting one of the scanning line and the signal line with which the bypass spare line overlaps.
8 more elements
An active matrix display device comprising:
- a plurality of pixel electrodes arranged in a matrix;
- a plurality of switching elements connected to the respective pixel electrodes;
- a plurality of scanning lines for supplying a scan voltage to the switching elements;
- a plurality of signal lines for supplying a signal voltage to the switching elements, provided so as to cross the scanning lines;
- an insulating film between the matrix of pixel electrodes and the scanning lines and signal lines;
- a bypass spare line for avoiding at least one of a disconnected portion and a leak portion, formed so as to overlap at least one of the scanning line and the signal line with the insulating film interposed between the bypass spare line and the at least one of the scanning line and the signal line;
- wherein the bypass spare line and at least one of the scanning line and the signal line are electrically connected to each other, and
- wherein the bypass spare line is made of a transparent conductor.
5 more elements
An active matrix display device comprising:
- a plurality of pixel electrodes arranged in a matrix;
- a plurality of switching elements connected to the respective pixel electrodes;
- a plurality of scanning lines for supplying a scan voltage to the switching elements;
- a plurality of signal lines for supplying a signal voltage to the switching elements, provided so as to cross the scanning lines;
- an organic insulating film between the matrix of pixel electrodes and the scanning lines and signal lines;
- a bypass spare line for avoiding at least one of a disconnected portion and a leak portion, formed so as to overlap at least one of the scanning line and the signal line with the insulating film interposed between the bypass spare line and the at least one of the scanning line and the signal line;
- wherein the bypass spare line and at least one of the scanning line and the signal line are electrically connected to each other, and
- wherein the bypass spare line is provided on the organic insulating film, and is simultaneously patterned along with the pixel electrodes using an identical material.
5 more elements
A method for correcting a defect of an active matrix display device comprising:
- a plurality of pixel electrodes arranged in a matrix;
- a plurality of switching elements connected to the respective pixel electrodes;
- a plurality of scanning lines for supplying a scan voltage to the switching elements;
- a plurality of signal lines for supplying a signal voltage to the switching elements, provided so as to cross the scanning lines;
- and
- an insulating film between the pixel electrodes on a first side of the film, and the scanning lines and signal lines on a second side of the film;
- the method comprising the steps of:
- determining the presence of a disconnection in the scanning lines and the signal lines;
- and
- forming a bypass spare line on the line including the disconnection in an overlapped manner with the spare line on the first side of the insulating film, and electrically connecting the bypass spare line and at least one of the scanning line and the signal line to each other.
7 more elements
A method for correcting a leak of an active matrix display device comprising:
- a plurality of pixel electrodes arranged in a matrix;
- a plurality of switching elements connected to the respective pixel electrodes;
- a plurality of scanning lines for supplying a scan voltage to the switching elements;
- a plurality of signal lines for supplying a signal voltage to the switching elements, provided so as to cross the scanning lines, and
- an insulating film between the pixel electrodes on a first side of the film, and the scanning lines and signal lines on a second side of the film;
- the method comprising the steps of:
- determining the presence of a leak in the scanning lines and the signal lines;
- and
- cutting at least one of the scanning line and the signal line including an intersection where the leak occurs, at two points with the intersection positioned therebetween;
- forming a bypass spare line on the line including the intersection where the leak occurs in an overlapped manner with the spare line on the first side of the insulating film, and electrically connecting the bypass spare line and at least one of the scanning line and the signal line to each other.
7 more elements
An active matrix display device comprising:
- a plurality of pixel electrodes arranged in a matrix;
- a plurality of switching elements connected to the respective pixel electrodes;
- a plurality of scanning lines for supplying a scan voltage to the switching elements;
- a plurality of signal lines for supplying a signal voltage to the switching elements, provided so as to cross the scanning lines, and
- an insulating film between the pixel electrodes on a first side of the film, and the scanning lines and signal lines on a second side of the film;
- wherein a bypass spare line overlaps at least one of the scanning line and the signal line where a disconnection occurs with the spare line on the first side of the insulating film, and
- the bypass spare line and at least one of the scanning line and the signal line are electrically connected to each other.
4 more elements
An active matrix display device comprising:
- a plurality of pixel electrodes arranged in a matrix;
- a plurality of switching elements connected to the respective pixel electrodes;
- a plurality scanning lines for supplying a scan voltage to the switching elements;
- and
- a plurality of signal lines for supplying a signal voltage to the switching elements, provided so as to cross the scanning lines, and
- an insulating film between the pixel electrodes on a first side of the film, and the scanning lines and signal lines on a second side of the film;
- wherein an intersection between at least one of the scanning lines and the signal lines is bracketed by cuts through the at least one of the scanning lines at two points with the intersection positioned therebetween, a bypass spare line overlaps the cut at least one of the scanning lines with the spare line on the first side of the insulating film, and
- the bypass spare line and the cut at least one of the scanning line and the signal line are electrically connected to each other.
5 more elements
Dependencies are inferred from the claim text.