CN101408681A

CN101408681A - display panel

Info

Publication number: CN101408681A
Application number: CNA200810203155XA
Authority: CN
Inventors: 赵启飞; 汤桂彬
Original assignee: AU Optronics Suzhou Corp Ltd; AU Optronics Corp
Current assignee: AU Optronics Suzhou Corp Ltd; AUO Corp
Priority date: 2008-11-21
Filing date: 2008-11-21
Publication date: 2009-04-15
Anticipated expiration: 2028-11-21
Also published as: CN101408681B

Abstract

The invention provides a display panel. The display panel of the present invention can reliably perform detection after repairing the circuit, avoiding missed detection. The display panel includes a substrate, a plurality of signal lines, a first repair line, a second repair line and a third repair line, the signal line is arranged on the substrate, the first repair line and the second repair line are arranged on opposite sides of the signal line On one side, the third repair line is connected or partially overlapped with the first repair line and the second repair line.

Description

Display panel

Technical field

The present invention relates to a kind of display panel, but particularly relate to a kind of display panel of display panel of fix-up circuit.

Background technology

See also Figure 10 A, it illustrates the schematic top plan view of existing display panel.Usually, display panel 900 (for example display panels) has a glass infrabasal plate 910.Be formed with a plurality of pixel circuits (not illustrating), many signal line 920 (for example sweep trace and data line) on this glass infrabasal plate 910.Each picture element receives the controlling signal (for example sweep signal and pixel voltages) of driving circuit assembly 930 (as drive IC) respectively via signal lines, thereby these a little signal wires 920 can form a viewing area 901 with pixel circuit on this glass infrabasal plate 910.

In addition, this glass infrabasal plate more can be provided with many patch cords (Repair Line) 940, or claims rescue line (Rescue Line).These a little patch cords 940 are partly to be formed at also partly to be overlapped in this a little signal wires 920 on the glass infrabasal plate 910, in order to circuit as an alternative when breaking phenomenas take place for signal wire 920, that is be sent in the later pixel circuit of trip point 902 in order to controlling signal is changed by patch cord 940.

See also Figure 10 B, it illustrates existing schematic top plan view with display panel of p-wire.At present, whether the signal wire 920 of detection display panel 900 breaking phenomena takes place or goes bad the mode of putting and can utilize p-wire (Shorting Bar) 950 to connect a signal wire 920 and a test cell (not illustrating), test to signal wire 920 with input test signal, there are trip point or bad point to exist if detect signal wire 920, then utilize patch cord 940 to repair.Follow-up, excise p-wire 950 again, and in conjunction with driving circuit assembly 930 (shown in Figure 10 A).Yet, because the test signal of p-wire 950 is to be directly inputted in the signal wire 920 to test, and the fullpath after not repairing by panel, the welding point 903 of part patch cord for example, thereby whether the panel that can't use test line 950 positively detects after repairing repair success, also can't judge the repairing yield of panel exactly.

Summary of the invention

One of purpose of the present invention is to provide a kind of display panel, it is characterized in that described display panel comprises:

Substrate;

Many signal line are arranged on the described substrate;

First patch cord is arranged at the input field of described signal wire, and partly is overlapped in described signal wire;

Second patch cord be arranged at the tail region of described signal wire to small part, and part is overlapped in described signal wire; And

The 3rd patch cord connects or part is overlapped in described first patch cord and described second patch cord, and wherein said the 3rd patch cord part circuit at least is positioned at the outside of the input terminal of described signal wire.

Display panel of the present invention can positively carry out the detection behind the circuit mending, avoids taking place the situation of omission, and can judge the repairing yield of panel exactly.

For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:

Description of drawings

Fig. 1, Fig. 2 and Fig. 3 show the schematic top plan view according to the display panel of one embodiment of the invention;

Fig. 4 shows the schematic top plan view according to the display panel with short-circuit test line of one embodiment of the invention;

Fig. 5 shows the schematic top plan view according to the display panel with chopping signal line of one embodiment of the invention;

Fig. 6 shows the schematic top plan view according to the display panel with amplifier of one embodiment of the invention;

Fig. 7 shows the schematic top plan view of blocking the display panel behind the 3rd patch cord according to one embodiment of the invention;

Fig. 8 shows the schematic top plan view that the display panel behind the driving circuit assembly is set according to one embodiment of the invention; And

Fig. 9 shows the schematic top plan view according to the display panel of another embodiment of the present invention;

Figure 10 A shows the schematic top plan view according to existing display panel; And

Figure 10 B shows the schematic top plan view that has the display panel of p-wire according to existing.

Embodiment

Please refer to Fig. 1, it illustrates the schematic top plan view according to the display panel of one embodiment of the invention.The display panel 100 of present embodiment can be applicable on the various display, for example: LCD (Liquid Crystal Display, LCD), display of organic electroluminescence (Organic ElectroLuminescence Display, OEL), organic light emitting diode display (Organic Light EmissionDiode Display, OLED), Plasmia indicating panel (Plasma Display Panel, PDP), field emission display (Field Emission Display), nano carbon tube display or electric ink (E-ink) display etc.In the present embodiment, display panel 100 is to be that example illustrates with the display panels, and at this moment, display panel 100 can not be provided with respect to a backlight module (illustrating), and forms liquid crystal indicator.So be not limited thereto, the present invention also can be applicable to the display panel of other pattern.

As shown in Figure 1, the display panel 100 of present embodiment comprises substrate 110, many signal line 120, first patch cord 130, second patch cord 140 and the 3rd patch cord 150.Substrate 110 can be brittle base (for example glass substrate) or flexible base plate (for example plastic base), in one embodiment, substrate 110 for example is thin film transistor (TFT) (Thin Film Transistor, TFT) matrix base plate, at this moment, display panel 100 can for example be a display panels, and it can more comprise liquid crystal layer (not illustrating) and colored filter (Color Filter, CF) substrate (not illustrating).These signal wires 120 on the placement substrate 110, pass a viewing area 101, in order to show image abreast.Each signal wire 120 has input terminal 121, in order to input signal, for example: sweep signal, data-signal or test signal.Wherein viewing area 101 can be provided with a plurality of picture elements (not illustrating) and a plurality of driving component (not illustrating).At least one side of viewing area 101 can form outer peripheral areas 102, in order to driving circuit assembly 160 electronic packages such as (for example drive IC) (please earlier with reference to Fig. 8) for example to be set, or the space that provides circuit to lay.In the present embodiment, signal wire 120 for example is a plurality of sweep traces (not illustrating) and a plurality of data lines, and it is respectively abreast on the placement substrate 110, and interlaced in the viewing area 101.And these signal wires 120 can form input field 103 and tail region 104, input field 103 is sides that are positioned at these signal wires 120, and between the input terminal 121 and viewing area 101 of signal wire 120, tail region 104 is the relative opposite sides that are positioned at these signal wires 120.

Please refer to Fig. 2, it illustrates the schematic top plan view according to the display panel of one embodiment of the invention.First patch cord 130 of present embodiment is the input field 103 that is arranged at these signal wires 120, and part is overlapped in first end of these signal wires 120.Second patch cord 140 is the tail regions 104 that are arranged at these signal wires 120 to small part, and part is overlapped in second end of these signal wires 120.The 3rd patch cord 150 is to be arranged at outer peripheral areas 102, and connect (as shown in Figure 2) or partly be overlapped in (as shown in Figure 1) first patch cord 130 and second patch cord 140, wherein the circuit of part at least 152 of the 3rd patch cord 150 is the outsides that are positioned at the input terminal 121 of signal wire 120.The outside of described input terminal 121 is meant that with input terminal 121 be boundary, with respect to the opposite side of viewing area 101.The truncation points 151 that the 3rd patch cord 150 has at least one truncation points 151, the three patch cords 150 preferably is formed at the outside of the input terminal 121 of signal wire 120, blocks the 3rd patch cord 150 after carrying out circuit test at display panel 100.In one embodiment, after display panel 100 carries out circuit test, can come cut-out substrate 110 (please earlier with reference to Fig. 7) along the outside of the input terminal 121 of signal wire 120, with the truncation points 151 that forms the 3rd patch cord 150.In another embodiment, after display panel 100 carries out circuit test, for example can utilize that laser blows this truncation points 151, with the truncation points 151 that forms the 3rd patch cord 150.

Please refer to Fig. 3, it illustrates the schematic top plan view according to the display panel of one embodiment of the invention.First patch cord 130, second patch cord 140 or the 3rd patch cord 150 that it should be noted that present embodiment can be continuous conductors or is made of a plurality of conducting line segment.When first patch cord 130, second patch cord 140 or the 3rd patch cord 150 are when being made of a plurality of conducting line segment, these conducting line segments are that part overlaps mutually.

Please refer to Fig. 4, it illustrates the schematic top plan view according to the display panel with short-circuit test line of one embodiment of the invention.When display panel 100 carries out circuit test, can utilize a test cell or test macro (not illustrating) to come the input terminal 121 of input test signal in signal wire 120, whether normal with test signal line 120.As shown in Figure 4, in one embodiment, display panel 100 more comprises many short-circuit test lines 170 (Shorting Bar), and it is arranged on the substrate 110, and be positioned at the outside of the input terminal 121 of signal wire 120, use after display panel 100 tests and be removed or block (for example cut).Short-circuit test line 170 is to be electrically connected at test cell or test macro, and every short-circuit test line 170 is to be connected in segment signal line 120, in order to the input terminal 121 of input test signal in signal wire 120.Whether in one embodiment, display panel 100 is provided with three short-circuit test lines 170, normal in order to survey the red sub-picture element (not illustrating), green sub-picture element (not illustrating) and the blue sub-picture element (not illustrating) that consolidate in the viewing area 101 respectively.

Please refer to Fig. 5, it illustrates the schematic top plan view according to the display panel with chopping signal line of one embodiment of the invention.When display panel 100 detect in these signal wires 120 wherein one display panel 100 is carried out circuit mending when having trip point 122 or bad point, wherein this signal wire 120 with trip point 122 or bad point promptly forms chopping signal line 123.At this moment, electrically connect the chopping signal line 123 and first patch cord 130, and electrically connect the chopping signal line 123 and second patch cord 140, to carry out circuit mending.At this moment, overlapping place that can utilize laser to come the welding chopping signal line 123 and first patch cord 130, and overlapping place of the chopping signal line 123 and second patch cord 140, thereby at above-mentioned overlapping place formation welding point 124.Then, when the 3rd patch cord 150 parts are overlapped in first patch cord 130 and second patch cord 140, can utilize laser to come overlapping place of welding the 3rd patch cord 150 and first patch cord 130, and overlapping place of the 3rd patch cord 150 and second patch cord 140, electrically connect the 3rd patch cord 150 and first patch cord 130 to form welding point 153, and electrically connect the 3rd patch cord 150 and second patch cord 140.

As shown in Figure 5, behind display panel 100 circuit mendings, then, again display panel 100 is carried out circuit test, whether repair success with test display panel 100.At this moment, but input test signal is in the input terminal 121 of chopping signal line 123, test signal can be in regular turn via input terminal 121, first patch cord 130, the 3rd patch cord 150 and second patch cord 140 of chopping signal line 123, and then send back chopping signal line 123, whether repair success with test both opens signal wire 123.Therefore, in the test process after display panel 100 is repaired, test signal can be passed through complete patch cord path (first patch cord 130, second patch cord 140), thereby positively whether test both opens signal wire 123 repairs success.

Please refer to Fig. 6, it illustrates the schematic top plan view according to the display panel with amplifier of one embodiment of the invention.In one embodiment, display panel 100 more can comprise amplifier 180, and it is arranged in the signal path (first patch cord 130, second patch cord 140 or the 3rd patch cord 150) of above-mentioned patch cord, in order to amplifying signal, to improve problem of signal attenuation.

Please refer to Fig. 7 and Fig. 8, Fig. 7 illustrates the schematic top plan view of blocking the display panel behind the 3rd patch cord according to one embodiment of the invention, and Fig. 8 illustrates the schematic top plan view that the display panel behind the driving circuit assembly is set according to one embodiment of the invention.After display panel 100 after this repairs carries out circuit test, then,, block the 3rd patch cord 150 when confirming that chopping signal line 123 repaired when successful, at this moment, but cut-out substrate 110 or utilize laser to blow this truncation points 151.Then, driving circuit assembly 160 is set on the outer peripheral areas 102 of display panel 100, and is electrically connected at signal wire 120.Driving circuit assembly 160 for example is driving circuit, chip for driving, FPC (Flexible PrintedCircuits, FPC), printed circuit board (PCB) (Printed circuit board, PCB), printed circuit board (PCB) assembly (Printed-Circuit Board Assembly, PCBA), crystal grain mantle (COF), coil type packaged film (TAB) or above-mentioned combination in any, its can utilize crystal grain mantle structure packing technique (COF), glass flip chip joining technique (COG) or automatically band carry a solder technology (TAB) and be arranged on the outer peripheral areas 102 of display panel 100.Driving circuit assembly 160 has conduction path 161, in order to be electrically connected at first patch cord 130 and second patch cord 140.In the present embodiment, first patch cord 130 can have splicing ear, with an end of the conduction path 161 that is connected in driving circuit assembly 160, the other end of conduction path 161 can be connected in by the 3rd patch cord 150 of the part after blocking, or is directly connected in second patch cord 140.In one embodiment, driving circuit assembly 160 can comprise amplifier 162, and it is arranged in the conduction path 161, in order to amplifying signal.

Therefore, the display panel 100 of present embodiment can utilize the 3rd patch cord 150 to form the signal path of patch cord, whether repairs success with the display panel 100 that positively detects after repairing, and avoids taking place the situation of omission.Wherein, the 3rd patch cord 150 can be blocked in patch cord test back.

Please refer to Fig. 9, it illustrates the schematic top plan view according to the display panel of another embodiment of the present invention.In another embodiment, the first patch cord 130a can repair line segment 131a by a plurality of first and be formed, at this moment, the 3rd patch cord 150a is the outside that is arranged at the input terminal 121 of signal wire 120, and connect or part is overlapped in these and first repairs line segment 131a, and the end of the second patch cord 140a is a side that extends to input field 103, is overlapped in the 3rd patch cord 150a with connection or part.After the display panel after the repairing 100 is tested, can come cut-out substrate 110 along the outside (that is along dotted line C) of input terminal 121, thereby remove the 3rd patch cord 150a simultaneously.

By the embodiment of the invention described above as can be known, the signal path that display panel of the present invention can be pre-formed patch cord positively carries out the detection behind the circuit mending, avoids taking place the situation of omission, thereby can judge the repairing yield of panel exactly.

In sum; though the present invention discloses as above with preferred embodiment; but described preferred embodiment is not in order to restriction the present invention; those of ordinary skill in the field; without departing from the spirit and scope of the present invention; all can do various changes and retouching, so protection scope of the present invention is as the criterion with the scope that claim defines.

Claims

1. A display panel, characterized in that the display panel comprises:

Substrate;

A plurality of signal lines have an input area and a tail area, and are arranged on the substrate;

The first repair line is arranged in the input area of the signal line and partially overlaps the signal line;

a second repair line at least partially disposed at the tail region of the signal line and partially overlapping the signal line; and

The third repairing line is connected or partially overlapped with the first repairing line and the second repairing line, wherein at least part of the third repairing line is located outside the input terminal of the signal line.

2. The display panel according to claim 1, wherein the third repair line has at least one truncation point.

3. The display panel according to claim 2, characterized in that: the display panel further comprises:

A driving circuit assembly, the driving circuit assembly has a conductive path connecting the first repair line and the second repair line.

4. The display panel according to claim 3, wherein the driving circuit assembly includes an amplifier disposed in the conduction path.

5. The display panel according to any one of claims 1 to 4, characterized in that: the plurality of signal lines include a broken signal line at a broken point, and the first repair line is electrically connected to the input area. The disconnection signal line is connected, and the second repair line is electrically connected to the disconnection signal line in the tail area.

6. The display panel according to claim 5, characterized in that: the first repair line and the disconnected signal line have welding points at overlaps; the second repaired line and the disconnected signal line overlap The overlaps have welding points.

7. The display panel according to claim 6, wherein the third repairing line partially overlaps the first repairing line and the second repairing line, and the third repairing line overlaps with the first repairing line A repair line has welded joints at overlapping locations, and the third repaired line and the second repaired line have welded joints at overlapping positions.

8. The display panel according to claim 3, wherein the first repair line has a connection terminal connected to the conductive path.

9. The display panel according to claim 1, characterized in that: the display panel further comprises:

A plurality of short-circuit test lines are arranged on the substrate and located outside the input terminals of the signal lines; each of the short-circuit test lines is connected to some of the plurality of signal lines.

10. The display panel according to claim 1, wherein the first repairing line, the second repairing line or the third repairing line is composed of multiple segments of wires.