DISPLAY PANEL, DISPLAY DEVICE, AND METHOD FOR MANUFACTURING THE DISPLAY PANEL

• US 20100039577A1
• Filed: 01/10/2008
• Published: 02/18/2010
• Est. Priority Date: 03/15/2007
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Hirato, Shinichi
• Granted Patent: US 8,330,892 B2
• Time in Patent Office: Days
• US Class Current: 349/54
• CPC Class Codes: G02F 1/136213 Storage capacitors associated with the pixel electrode
• CPC Class Codes: G02F 1/136259 Repairing; Defects
• CPC Class Codes: G02F 1/136272 Auxiliary lines
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 2201/40 Arrangements for improving the aperture ratio

Abstract

Electrical conductor patterns (20) are provided so as to face respective source lines (SL). In each of the electrical conductor patterns (20), a plurality of electrical conductor islands (21) line up. With a source line (SL) being broken at points P1 and P2, an electrical conductor island (21-j) is connected via point Q1a and Q1b, and an electrical conductor island (21j) is connected via points Q2a and Q2b, by carrying out laser welding. This realizes a display panel including spare lines for respective data signal lines, in which display panel it is possible to increase a probability that a supply failure of a data signal can be avoided, even in a case where a data signal line is broken.

Claims

1. An active matrix display panel, comprising electrical conductor patterns in each of which a plurality of electrical conductor islands are provided so as to line up, each of the plurality of electrical conductor islands partially or entirely facing corresponding one of data signal lines in its film thickness direction,

said electrical conductor patterns being provided for the respective data signal lines and being different from a pattern of electrodes of display elements to which respective data signals are supplied.

2. The display panel as set forth in claim 1, wherein each of the plurality of electrical conductor islands has a length in a direction in which a pixel column extends, the pixel column being constituted by pixels each connected with a same data signal line, the length being smaller than or equal to a length of one pixel in the direction.

3. The display panel as set forth in claim 1, wherein, in each of the electrical conductor patterns, (i) a gap between adjacent ones of the plurality of electrical conductor islands and (ii) a connecting part of the corresponding one of data signal lines and a corresponding pixel selection element face each other.

4. The display panel as set forth in claim 1, wherein

an electrical conductor island in each one of the electrical conductor patterns goes over each one of intersections of the data signal lines and scanning signal lines, and

the electrical conductor island in each one of the electrical conductor patterns partially faces both sides of corresponding one of the data signal lines, the each one of intersections being sandwiched between the both sides.

5. The display panel as set forth in claim 1, further comprising storage capacitance lines so that storage capacitance is provided for respective pixels, the storage capacitance lines being provided so as to intersect with the respective data signal lines,

an electrical conductor island in each one of the electrical conductor patterns going over each one of intersections of the data signal lines and the storage capacitance lines, and the electrical conductor island in each one of the electrical conductor patterns partially facing both sides of corresponding one of the data signal lines, the each one of intersections being sandwiched between the both sides.

6. The display panel as set forth in claim 1, wherein

each one of the electrical conductor patterns comprises an electrical conductor island which is connected with corresponding one of the data signal lines via a plurality of connecting parts,

the corresponding one of the data signal lines being broken between adjacent ones of the plurality of connecting parts.

7. The display panel as set forth in claim 1, wherein more than one of the plurality of electrical conductor islands are provided in a direction in which a pixel column extends, so as to line up within a distance corresponding to a length of one pixel in the direction, the pixel column being constituted by pixels each connected with a same data signal line.

8. The display panel as set forth in claim 1, wherein, in each of the electrical conductor patterns, an electrode pattern of an adjacent display element extends from a side of the display element to a gap between adjacent ones of the plurality of electrical conductor islands.

9. The display panel as set forth in claim 1, wherein:

an electrical conductor island in each one of the electrical conductor patterns goes over a scanning signal line in a region where the electrical conductor island does not face corresponding one of the data signal lines, and

the electrical conductor island partially faces both sides of the corresponding one of the data signal lines, the scanning signal line being sandwiched by the both sides.

10. The display panel as set forth in claim 1, further comprising storage capacitance lines so that storage capacitance is provided for respective pixels, the storage capacitance lines being provided so as to intersect with the respective data signal lines,

an electrical conductor island in each one of the electrical conductor patterns going over corresponding one of the storage capacitance lines in a region where the electrical conductor island in each one of the electrical conductor patterns does not face corresponding one of the data signal lines, and the electrical conductor island in each one of the electrical conductor patterns partially facing both sides of the corresponding one of the data signal lines, the corresponding one of the storage capacitance lines being sandwiched by both sides.

11. The display panel as set forth in claim 1, wherein a ring shaped electrical conductor island in each one of the electrical conductor patterns surrounds each one of intersections of the data signal lines and scanning signal lines.

12. The display panel as set forth in claim 1, further comprising storage capacitance lines so that storage capacitance is provided for respective pixels, the storage capacitance lines being provided so as to intersect with the respective data signal lines,

a ring shaped electrical conductor island in each one of the electrical conductor patterns surrounding each one of intersections of the data signal lines and the storage capacitance lines.

17. The display panel as set forth in claim 1, wherein each one of the electrical conductor patterns is made by a transparent electrode.

18. A display device comprising a display panel as set forth in claim 1.

19. A method for manufacturing a display panel as set forth in claim 1,

the method comprising the step of forming the electrical conductor patterns from a same material as the electrodes of the display elements to which the respective data signals are supplied, by concurrently patterning the electrical conductor patterns and the electrodes of the display elements.

20. The method as set forth in claim 19, wherein the display panel is a liquid crystal display panel, and the electrodes are pixel electrodes.

21. The method as set forth in claim 19, further comprising the step of forming a path that causes the data signals to be supplied via the respective electrical conductor patterns, by carrying out laser welding so that the electrical conductor patterns are connected with the respective data signal lines.

13. An active matrix display panel, comprising electrical conductor patterns in each of which a wiring line is provided so as to partially face a corresponding one of data signal lines in its film thickness direction,

said electrical conductor patterns being provided for the respective data signal lines.

14. The display panel as set forth in claim 13, wherein

each one of the electrical conductor patterns comprises an electrical conductor patterns which is connected with corresponding one of the data signal line via a plurality of connecting parts,

the corresponding one of the data signal lines being broken between adjacent ones of the plurality of connecting parts.

15. The display panel as set forth in claim 13, wherein:

each of the plurality of electrical conductor patterns goes over a scanning signal line in a region where the each of the plurality of electrical conductor patterns does not face the corresponding one of the data signal lines, and

said each of the plurality of electrical conductor patterns partially faces both sides of the corresponding one of the data signal lines, the scanning signal line being sandwiched by the both sides.

16. The display panel as set forth in claim 13, further comprising storage capacitance lines so that storage capacitance is provided for respective pixels, the storage capacitance lines being provided so as to intersect with the respective data signal lines,

each of the plurality of electrical conductor patterns going over corresponding one of the storage capacitance lines in a region where the each of the plurality of electrical conductor patterns does not face corresponding one of the data signal lines, and said each of the plurality of electrical conductor patterns partially facing both sides of the corresponding one of the data signal lines, the corresponding one of the storage capacitance lines being sandwiched by the both sides.