CN100381878C - Display device, inspection method for display device, and inspection device for display device - Google Patents
Display device, inspection method for display device, and inspection device for display device Download PDFInfo
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- CN100381878C CN100381878C CNB2005101132297A CN200510113229A CN100381878C CN 100381878 C CN100381878 C CN 100381878C CN B2005101132297 A CNB2005101132297 A CN B2005101132297A CN 200510113229 A CN200510113229 A CN 200510113229A CN 100381878 C CN100381878 C CN 100381878C
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Abstract
A display device includes a first wiring line group of wiring lines connected to odd-number-th scan lines, a second wiring line group of wiring lines connected to even-number-th scan lines, a first inspection wiring line connected to first wiring lines of the first wiring line group, a second inspection wiring line connected to second wiring lines of the first wiring line group, which neighbor the first wiring lines, a third inspection wiring line connected to third wiring lines of the second wiring line group, and a fourth inspection wiring line connected to fourth wiring lines of the second wiring line group, which neighbor the third wiring lines.
Description
Technical field
The present invention relates to comprise the inspection wiring that is used to check line defct display device, connect up, be used for based on the inspection method of the inspection signal check line defct of the inspection wiring that inputs to this display device and the checkout facility that produces the inspection signal of the inspection wiring that inputs to this display device.
Background technology
Display device such as liquid crystal display comprises effective display part of being made up of the display element that is arranged in the matrix.Effectively display device comprise many along the row of display element along the sweep trace of stretching, along the row of display element along the multi-strip scanning line of stretching, be arranged on on-off element and the pixel capacitors that is connected with on-off element near sweep trace and the signal wire intersection point.
Under normal conditions, it is distolateral effective display part distolateral the wiring group that connects scan line drive circuit and sweep trace to be set.By checking that a signal is input to odd-numbered scan lines and even-line interlace line, the line defct on can inspection panel, for example effectively short circuit in the display part or open circuit.
On the other hand, such design has been proposed: comprise that the odd number wiring group that is connected to odd-numbered scan lines is arranged on the distolateral of effective display part, comprise another distolateral (for example seeing disclosed Jpn.Pat.Appln.KOKAI No.06-160898 and disclosed Jpn.Pat.Appln.KOKAI No.2001-013892) that the even number wiring group that is connected to the even-line interlace line is arranged on effective display part.For adopting part of scanning line driving wherein and signal wire drive part is the structure of integrated single driving IC chip, and this design is optimum.
Under the situation of this design,, can check the line defct of effective display part by checking that signal is input to odd-numbered scan lines and even-line interlace line.Yet, but can not check the line defct among every of wiring group.So the panel with the line defct in the wiring group that can not testedly find can enter in subsequently the manufacturing step.In manufacturing step subsequently, the expensive components such as driving IC chip and flexible printed circuit board (FPC) can be installed.Like this, if defective panel enters manufacturing step subsequently, this can cause the reduction of output.
Summary of the invention
The present invention has considered the problems referred to above, the purpose of this invention is to provide the line defct that can accurately detect on the panel and can suppress display device that turnout reduces, is used for the inspection method of display device and is used for the checkout facility of display device.
According to a first aspect of the invention, the display device that provides comprises: the effective display part that is made of a plurality of display elements; The first wiring group, it is set in place on the periphery of the outside of effective display part distolateral, and comprises the wiring that is connected with odd-numbered scan lines, and the drive signal that is provided to this odd-numbered scan lines is used for the display element of On/Off on odd-numbered line; The second wiring group, it is arranged on periphery in addition distolateral, and comprises the wiring that is connected with the even-line interlace line, and the drive signal that is provided to this even-line interlace line is used for the display element of On/Off on even number line; The first inspection wiring that is connected with first wiring of the first wiring group; Be connected to the second inspection wiring of second wiring of the first wiring group, described second wiring is adjacent with first wiring; The 3rd inspection wiring that is connected with the 3rd wiring of the second wiring group; And the 4th inspection wiring that is connected to the 4th wiring of the second wiring group, described the 4th wiring is adjacent with the 3rd wiring.
According to a second aspect of the invention, provide a kind of inspection method that is used for display device, described display device comprises: the effective display part that is made of a plurality of display elements; The first wiring group, it is set in place on the periphery of the outside of effective display part distolateral, and comprises the wiring that is connected with odd-numbered scan lines, and the drive signal that is provided to this odd-numbered scan lines is used for the display element of On/Off on odd-numbered line; The second wiring group, it is arranged on periphery in addition distolateral, and comprises the wiring that is connected with the even-line interlace line, and the drive signal that is provided to this even-line interlace line is used for the display element of On/Off on even number line; Described inspection method comprises: check that signal inputs to the first inspection wiring that is connected with first wiring of the first wiring group to first, check that signal inputs to the second inspection wiring that is connected with second wiring of the first wiring group to second, described second wiring is adjacent with first wiring, check that signal inputs to the 3rd inspection wiring of connecting up and being connected with the 3rd of the second wiring group to the 3rd, check that signal inputs to the 4th inspection that is connected with the 4th wiring of the second wiring group and connects up to the 4th; Described the 4th wiring is adjacent with the 3rd wiring, and, check line defct in the first wiring group, the line defct in the second wiring group and the effectively odd-numbered scan lines in the display part and the line defct in the even-line interlace line based on first to fourth input of checking signal.
According to a third aspect of the invention we, provide a kind of inspection method that is used for display device, display device comprises: the effective display part that is made of a plurality of display elements; The first wiring group, it is set in place on the periphery of the outside of effective display part distolateral, and comprises the wiring that is connected with odd-numbered scan lines, and the drive signal that is provided to this odd-numbered scan lines is used for the display element of On/Off on odd-numbered line; The second wiring group, it is arranged on periphery in addition distolateral, and comprises the wiring that is connected with the even-line interlace line, and the drive signal that is provided to this even-line interlace line is used for the display element of On/Off on even number line; Described inspection method comprises: check that signal inputs to the first inspection wiring that is connected with first wiring of the first wiring group to first, and input to second check connecting up of being connected with second wiring of the first wiring group, described second wiring is adjacent with first wiring, and check that signal inputs to the 3rd checking and connect up of being connected with the 3rd wiring of the second wiring group to second, and input to the 4th check connecting up of being connected with the 4th wiring of the second wiring group, adjacent with described the 4th wiring with the 3rd wiring, based on first and second inputs of checking signals, check odd-numbered scan lines in effective display part and the line defct in the even-line interlace line; Check that signal inputs to first and checks wiring and the 3rd inspection wiring to first, and check that with second signal inputs to second and checks wiring and the 4th inspection wiring; Based on the input of the first and second inspection signals, check the defective in the first wiring group and the second wiring group.
According to a forth aspect of the invention, be provided for the checkout facility of display device, display device comprises: the effective display part that is made of a plurality of display elements; First wiring is organized it and is set in place on the periphery of the outside of effective display part distolateral, and comprises the wiring that is connected with odd-numbered scan lines, and the drive signal that is provided to this odd-numbered scan lines is used for the display element of On/Off on odd-numbered line; And the second wiring group, it is arranged on periphery distolateral in addition, and comprises the wiring that is connected with the even-line interlace line, and the drive signal that is provided to this even-line interlace line is used for the display element of On/Off on even number line; Described checkout facility comprises: be used to produce the signal generation device of checking signal; And signal input apparatus, it is used for the inspection signal by the signal generation device generation is inputed to the first inspection wiring that is connected with first wiring of the first wiring group, the second inspection wiring that is connected with second wiring of the first wiring group respectively, described second wiring is adjacent with first wiring, is connected with the 3rd wiring of the second wiring group the 3rd check wiring and is connected with the 4th wiring of the second wiring group the 4th check and connect up, the described the 4th connect up and the 3rd connect up adjacent.
According to a fifth aspect of the invention, the display device that provides has the first effective display part that is made of a plurality of display elements, and described display device comprises: the connection pad that can connect the second effective display part that is made of a plurality of display elements; The first wiring group, it is set in place on the periphery of the outside of first effective display part distolateral, and comprises many wirings, and the drive signal that is provided to these many wirings is used for the display element on On/Off first effective display part; The second wiring group, it is arranged on periphery in addition distolateral, and comprises many wirings, is used for display element on On/Off second effective display part by connecting drive signal that pad is provided to these many wirings; The first inspection wiring that is connected with first wiring of the second wiring group; The second inspection wiring that is connected with second wiring of the second wiring group, described second wiring is adjacent with first wiring.
The present invention can provide a kind of display device, be used for the inspection method of display device and be used for the checkout facility of display device, and it can accurately detect the line defct on the panel, and can suppress the reduction of output.
To set forth attached purpose of the present invention and advantage in the following description, and partly apparent from explanation, perhaps obtain described purpose and advantage by practice of the present invention.By means and the combination of hereinafter specifically noting, can realize and objects and advantages of the present invention are separated in acquisition.
Description of drawings
Combined and form instructions a part description of drawings embodiments of the invention, and explain principle of the present invention in the above with the detailed description of general remark that provides and embodiment given below.
Fig. 1 schematically shows the structure according to the display panels of the liquid crystal display of the first embodiment of the present invention;
Fig. 2 schematically shows the inspection wire structures of display panels shown in Figure 1;
Fig. 3 schematically shows the structure of the checkout facility that is applicable to display panels shown in Figure 1;
Fig. 4 is the diagrammatic sketch that is used to illustrate first inspection method that is applicable to display panels shown in Figure 1;
Fig. 5 is the diagrammatic sketch that is used to illustrate second inspection method that is applicable to display panels shown in Figure 1;
Fig. 6 schematically shows the structure according to the main panel of the liquid crystal display of second embodiment;
Fig. 7 schematically shows the structure of the sub-panel that can be connected in main panel phase shown in Figure 6;
Fig. 8 schematically shows the structure of the inspection wiring portion of main panel shown in Figure 6; And
Fig. 9 schematically shows the structure of the checkout facility that is applicable to main panel shown in Figure 6.
Embodiment
Describe display device according to an embodiment of the invention, be used for the inspection method of display device and be used for the checkout facility of display device referring now to accompanying drawing.
(first embodiment)
As shown in Figure 1, the plane display panels 1 that comprises substantial rectangular for liquid crystal display according to the example of the display device of first embodiment.Display panels 1 comprises a pair of substrate (just array base palte 3 and back substrate 4) and places this to the liquid crystal layer between the substrate 5 as optical modulation layer.Display panels 1 comprises that 6 effective display parts 6, the effective display part of the rectangle of display image are made of a plurality of display element PX that are arranged to matrix.
On-off element 7 is made by for example thin film transistor (TFT) (TFT).On-off element 7 has the gate electrode 7G that is electrically connected with related scans line Y (or with the integrated formation of sweep trace).On-off element 7 has the source electrode 7S that is electrically connected with coherent signal line X (or with the integrated formation of signal wire).On-off element 7 has the drain electrode 7D that is electrically connected with the pixel capacitors 8 of relevant display element PX.
Back substrate 4 comprise with effective display part 6 in the total backplate 9 of all display element PX.Be arranged to make pixel capacitors 8 relative array base palte 3 and back substrate 4, and be provided with the slit betwixt with backplate 9.Liquid crystal layer 5 is made by the liquid crystal material in the slit that is sealed between array base palte 3 and the back substrate 4.
In colored display type liquid crystal display, display panels 1 comprises multiple display element, for example shows the red pixel of red (R), the green pixel and the blue picture element that shows blue (B) of demonstration green (G).Particularly, red pixel comprises the red color light filter that can pass through the light of red main wavelength.Green pixel comprises the green color filter that can pass through the light of green main wavelength.Blue picture element comprises the blue color filter that can pass through the light of blue main wavelength.These color filter are arranged on the first type surface of array base palte 3 or back substrate 4.
Display panels 1 comprises the driving IC chip 11 on the periphery 10 that is arranged on 6 outsides, effective display part.In example shown in Figure 1, driving IC chip 11 is arranged on the extension 10A of array base palte 3, the end 4A that it stretches out and exceeds back substrate 4.Driving IC chip 11 comprises to signal wire X to be provided the signal wire drive part 11X of drive signal (vision signal) and the signal wire drive part 11Y of drive signal (sweep signal) is provided to sweep trace Y.
Scanning line driving part 11Y comprise drive signal output to odd-numbered scan lines Y (1,3,5 ...) the first driver element 11Y1 and drive signal output to even-line interlace line Y (2,4,6 ...) the second driver element 11Y2.The first driver element 11Y1 and the second driver element 11Y2 are arranged on the both sides of signal wire drive part 11X, thereby signal wire drive part 11X is clipped in the middle.
More specifically, the first driver element 11Y1 by the first wiring group 20 on the distolateral 10B that is arranged on periphery 10 and odd-numbered scan lines Y (1,3,5 ...) be electrically connected.The first wiring group 20 comprise with odd-numbered scan lines Y (1,3,5 ...) the wiring W that connects (1,3,5 ...).From the drive signal of first driver element 11Y1 output via wiring W (1,3,5 ...) offer corresponding odd-numbered scan lines Y (1,3,5 ...), Open from This Side/close the display element PX on the odd-numbered line.That is: control the on-off element 7 that is included among each display element PX based on the drive signal ON/OFF that provides from related scans line Y.
The second wiring group 30 of the in addition distolateral 10C of the second driver element 11Y2 by being arranged on periphery 10 and even-line interlace line Y (2,4,6 ...) be electrically connected.The second wiring group 30 comprise with even-line interlace line Y (2,4,6 ...) the wiring W that connects (2,4,6 ...).From the drive signal of second driver element 11Y2 output via wiring W (2,4,6 ...) offer corresponding even-line interlace line Y (2,4,6 ...), Open from This Side/close the display element PX on the even number line.
As shown in Figure 2, array base palte 3 comprises line defct between the first wiring group 20 that is used for checking on the periphery 10 and the line defct between the second wiring group 30 and the effective inspection wiring portion 40 of the line defct of display part 6.Check wiring portion 40 comprise link to each other with signal wire drive part 11X that the signal wire that is equipped with is checked part 41, first sweep trace that is equipped with that links to each other with the first driver element 11Y1 of scanning line driving part 11Y is checked part 42, second sweep trace inspection part 43 of the outfit that links to each other with the second driver element 11Y2 of scanning line driving part 11Y and be used for various signals are input to the pad part 44 of each inspection part 41,42 and 43.
Signal wire checks that part 41 comprises the signal wire inspection wiring 51 that is connected with corresponding signal line X.In this example, signal wire inspection wiring 51 comprises and is used for the redness inspection wiring 51R that checks signal being provided, being used for the green inspection wiring 51G that checks signal is provided and is used for providing the blueness inspection of the inspection signal 51B that connects up to the signal wire that links to each other with blue picture element to the signal wire that links to each other with green pixel to the signal wire that links to each other with red pixel.
Signal wire check part 41 also comprise be positioned at signal wire X (1,2 ..., n) and signal wire inspection wiring 51 (R, G, B) on-off elements 61 between.Each of on-off element 61 is made of thin film transistor (TFT).The gate electrode 61G of on-off element 61 is electrically connected with common switch signal wire 54.(R, G B) are electrically connected for the source electrode 61S of on-off element 61 and corresponding signal lines inspection wiring 51.The drain electrode 61D of on-off element 61 is electrically connected with corresponding signal lines X.
First sweep trace inspection part 42 comprises first wiring, 21 (W1 that for example connects up, W5, the W9 with the first wiring group 20, ...) connect first check wiring 52A and second wiring, 22 (W3 that for example connects up, W7, W11, ...) connect second check wiring 52B, it is 21 adjacent that described wiring and first is connected up.
First sweep trace checks that part 42 comprises that first wiring 21 and first checks that the on-off element 62 between the wiring 52A and second wiring 22 and second check the similar on-off element 62 between the wiring 52B.These on-off elements 62 are made of thin film transistor (TFT).
Particularly, the gate electrode 62G of on-off element 62 is electrically connected with common switch signal wire 54.The source electrode 62S of on-off element 62 and corresponding first checks that wiring 52A or second checks that wiring 52B is electrically connected.The drain electrode 62D of on-off element 62 is electrically connected with corresponding first wiring, 21 or second wiring 22.
Second sweep trace checks that part 43 comprises that (what W10...) connect the 3rd checks wiring 53A and the 4th wiring 34 (W4 for example connects up for the W2 that for example connects up, W6 with the 3rd wiring 33 of the second wiring group 30, W8, W12 ...) connect the 4th check wiring 53B, it is 33 adjacent that described wiring and the 3rd is connected up.
Second sweep trace checks that part 43 comprises that the 3rd wiring the 33 and the 3rd checks that on-off element 63 between the wiring 53A and the 4th wiring the 34 and the 4th check the similar on-off element 63 between the wiring 53B.These on-off elements 63 are made of thin film transistor (TFT).
Particularly, the gate electrode 63G of on-off element 63 is electrically connected with common switch signal wire 54.The source electrode 63S of on-off element 63 and the corresponding the 3rd checks that wiring 53A or the 4th checks that wiring 53B is electrically connected.The drain electrode 63D of on-off element 63 is electrically connected with corresponding the 3rd wiring the 33 or the 4th wiring 34.
(B) Shu Ru drive signal is the inspection vision signal that writes in the examination phase in the pixel capacitors 8 of display element PX for R, G from input pad 71.From input pad 72A, 72B, the drive signal of 73A and 73B input is the open/close inspection signal that is used to control the on-off element 7 of display element PX in the examination phase.From the drive signal of input pad 74 inputs is to be used to control each on-off element 61,62 of checking part and 63 open/close switching signal the examination phase.
Signal wire X (1,2 ..., n), the wiring 33,34 of the wiring 21,22 of the first wiring group 20 and the second wiring group 30 be included in they the pars intermedia office be connected pad PD, it can be connected to driving IC chip 11.
Liquid crystal display with said structure has such layout: can drive signal be offered odd-numbered scan lines and even-line interlace line from the both end sides of effective display part.In this arrangement, can import the second adjacent wiring of independent inspection signal to the first wiring and the first wiring group, to provide drive signal to odd-numbered scan lines, and independent inspection signal inputed to the 3rd wiring and adjacent the 4th wiring of the second wiring group, drive signal is offered the even-line interlace line.Therefore can accurately detect the line defct on the panel, for example the short circuit between the wiring of the first wiring group or every wiring open circuit and the wiring of the second wiring group between short circuit or the opening circuit of every wiring.
On the regional location corresponding to driving IC chip 11 places, signal wire checks that part 41, first sweep trace inspection part 42 and second sweep trace inspection part 43 are arranged on the extension 10A of array base palte 3.Need not explanation, first to fourth checks wiring 52A, 52B, and 53A and 53B are arranged on the 10A of extension.First to fourth checks wiring 52A, 52B, 53A and 53B driving IC chip 11 vertically on extend.Like this, when driving IC chip 11 was installed, first to fourth checked wiring 52A, 52B, and 53A and 53B and driving IC chip 11 are overlapping.In a word, check that wiring can be arranged on the array base palte and need not increase Outside Dimensions.
(checkout facility)
Below, provide explanation, the line defct on the display panels of described checkout facility detection in having the liquid crystal display of said structure according to the checkout facility 100 of first embodiment.As shown in Figure 3, checkout facility 100 comprises a plurality of probes 101 that can be connected with the input pad of pad part 44; The signal generator that produces multiple signal divides 102, and described signal comprises that inputing to first to fourth by probe 101 checks the inspection signal that connects up; And stimulus part 103, it will divide the 102 inspection signals that produce to input to first to fourth inspection wiring by signal generator.
(first inspection method)
Provide the explanation that is used for detecting first inspection method of the line defct on the display panels of liquid crystal display according to first embodiment below with said structure.Carry out first inspection method in the treatment step after forming display panels 1 and before driving IC chip 11 is installed to display panels 1.In the checkout facility 100 that is applied to first inspection method, signal generator divides 102 to produce independently four kinds of inspection signals, that is: the first inspection signal, the second inspection signal, the 3rd inspection signal and the 4th are checked signal.Simultaneously, check that signals can be unlike signals for these four kinds, or wherein at least two are identical signals.In addition, in checking step, these four kinds check in the signal at least one can be the constant inspection signal that disconnects level that is in.
Particularly, in first inspection method, the probe 101 of checkout facility 100 is connected with the input pad of the pad part 44 of display panels 1.At predetermined regularly place, signal generator divides 102 switching signals to input to switch signal line 54.By the input of switching signal, regularly locate the on-off element 61 of start signal ray examination part 41, the on-off element 62 of first sweep trace inspection part 42 and the on-off element 63 that second sweep trace is checked part 43 when appropriate.
Unlatching according to on-off element 62, stimulus part 103 first check signal input to is connected with first wiring 21 of the first wiring group 20 first check wiring 52A, and check that signal inputs to second inspections that are connected with second wiring 22 of the first wiring group 20 52B that connect up to second.Therefore check that with first the signal or the second inspection signal offer odd-numbered scan lines by the first wiring group 20.Check that by first signal and second checks the input of signal, open the on-off element 7 that is connected with odd-numbered scan lines in effective display part 6 in suitable timing place.
Unlatching based on on-off element 63, stimulus part 103 the 3rd check signal input to is connected with the 3rd wiring 33 of the second wiring group 30 the 3rd check wiring 53A, and check that signal inputs to the 4th inspections that are connected with the 4th wiring 34 of the second wiring group 30 53B that connect up to the 4th.Therefore check that with the 3rd signal or the 4th inspection signal offer the even-line interlace line by the second wiring group 30.Check that by the 3rd signal and the 4th checks the input of signal, open the on-off element 7 that is connected with even-line interlace line in effective display part 6 in suitable timing place.
Subsequently, according to first to fourth input of checking signal, can check short circuit and the effectively odd-numbered scan lines in the display part 6 and the short circuit between the even-line interlace line between the 3rd wiring the 33 and the 4th wiring 34 of short circuit between first wiring, 21 and second wiring 22 of the first wiring group 20, the second wiring group 30.In first inspection method, in this checks step, when effectively the on-off element 7 of display part 6 is in opening, signal generator divide 102 by signal wire inspection wiring 51 (R, G is B) checking that vision signal inputs to each signal line X.Therefore will check that vision signal writes the display element PX in effective display part 6 of display panels 1.By writing the inspection vision signal, can check the line defct of the various wirings on the display panels 1.
Particularly, as shown in Figure 4, at place regularly when with signal when first wiring 21 of the first wiring group 20 inputs to corresponding odd-numbered scan lines, check that from first wiring 52A input first checks signal, and an inspection vision signal inputed to each signal line X.In this case, if between first wiring, 21 and second wiring 22 of the first wiring group 20, be short-circuited, if for example be short-circuited between wiring W1 and the wiring W3, first checks that signal not only offers the sweep trace Y1 that is connected with the W1 that connects up, and offers the sweep trace Y3 that is connected with the W3 that connects up.Subsequently, open the on-off element 7 of the display element PX that is connected with sweep trace Y3 and the on-off element 7 of the display element PX that is connected with sweep trace Y1 simultaneously.Under normal circumstances, open and sweep trace Y1, Y5, Y9 ... the on-off element 7 of the display element PX of connection.Yet, owing to the short circuit between wiring W1 and the W3, can open and sweep trace Y1, Y3, Y5, Y9 ... the on-off element 7 of the display element PX of connection.
By this way, if provide the inspection vision signal under the state that each on-off element 7 is unlocked, the corresponding display element PX on the display panels 1 also is unlocked so.By observing the opening of the corresponding display element PX on the display panels 1, just can check the short circuit that first wiring 21 and second of the first wiring group 20 is connected up between 22.
Similarly,, when second wiring 22 from the first wiring group 20 inputs to corresponding odd-numbered scan lines to signal, check that from second wiring 52B input second checks signal, and an inspection signal is inputed to each signal line X at place regularly.Therefore can detect the short circuit between first wiring, 21 and second wiring 22 of the first wiring group 20.
In addition, as shown in Figure 4, at place regularly when with signal when the 3rd wiring 33 of the second wiring group 30 inputs to corresponding even-line interlace line, check that from the 3rd wiring 53A imports the 3rd and checks signal, and an inspection vision signal inputed to each signal line X.In this case, if between adjacent the 3rd wiring the 33 and the 4th wiring 34 of the second wiring group 30, short circuit occurs, if for example be short-circuited between wiring W2 and the wiring W4, the 3rd checks that signal not only offers the sweep trace Y2 that is connected with the W2 that connects up, and offers the sweep trace Y4 that is connected with the W4 that connects up.Subsequently, open the on-off element 7 of the display element PX that is connected with sweep trace Y4 and the on-off element 7 of the display element PX that is connected with sweep trace Y2 simultaneously.Under normal circumstances, open and sweep trace Y2, Y6, Y10 ... the on-off element 7 of the display element PX of connection.Yet, owing to the short circuit between wiring W2 and the W4, can open and sweep trace Y2, Y4, Y6 and Y10 ... the on-off element 7 of the display element PX of connection.Like this, can check the short circuit that the wiring of the 3rd in the second wiring group 30 the 33 and the 4th is connected up between 34.
Similarly, when when the 4th wiring 34 of the second wiring group 30 inputs to signal on corresponding even-line interlace line, check that from the 4th wiring 53B imports the 4th and checks signal and an inspection signal is inputed to each signal line X at place regularly.Therefore can detect the short circuit between the 3rd wiring the 33 and the 4th wiring of checking in the second wiring group 30 34.
In addition, in the short circuit in checking the first wiring group 20 and the second wiring group 30, also can check odd-numbered scan lines in effective display part 6 and the short circuit between the even-line interlace line.Be short-circuited between hypothesis odd-numbered scan lines and the even-line interlace line now, for example be short-circuited between sweep trace Y1 and the sweep trace Y2.In this case, if in step to the test for short-circuit between first wiring, 21 and second wiring 22 of the first wiring group 20, check that with first signal inputs to corresponding odd-numbered scan lines from first wiring 21, provide first to check that signal is to sweep trace Y1 and sweep trace Y3.Therefore, open the on-off element 7 of the display element PX be connected with sweep trace Y2 simultaneously and the on-off element 7 of the display element PX that is connected with sweep trace Y1.Under normal circumstances, open and sweep trace Y1, Y5, Y9 ... the on-off element 7 of the display element PX of connection.Yet, because the short circuit between sweep trace Y1 and the sweep trace Y2 can be opened and sweep trace Y1 Y2, Y5, the on-off element 7 of the display element PX that is connected with Y9....
By this way, when each on-off element 7 was in opening, if provide the inspection vision signal to signal wire X, the corresponding display element PX on the display panels 1 also was unlocked so.By observing the opening of the corresponding display element PX on the display panels 1, just can check the short circuit between the adjacent scanning lines.
In addition, according to above-mentioned inspection method, except checking the short circuit between the wiring, by opening circuit between the terminal of observing the opening of the display element PX on the display panels 1, also can check the connection pad PD that is connected with driving IC chip 11 and every wiring.Particularly, according to the input of various inspection signals, the opening of observation display element PX.Therefore can check between the 3rd wiring the 33 and the 4th wiring 34 of opening circuit between first wiring, 21 and second wiring 22 of the first wiring group 20, the second wiring group 30 open circuit and sweep trace Y in effective display part 6 (, can not open corresponding display element PX) and signal wire X if open circuit between occur on this segment distance open circuit.
As mentioned above, according to first inspection method, in liquid crystal display, drive signal can be offered odd-numbered scan lines and even-line interlace line from the both end sides of effective display part with such layout; Checkout facility produces four kinds and checks signal; Check that signal inputs to first wiring of the first wiring group to first; And check that signal inputs to second wiring adjacent with first wiring to second.Based on the input of checking signal, can accurately detect line defct in the first wiring group and the defective in the second wiring group.Simultaneously, can accurately detect following line defct: opening circuit between the odd-numbered scan lines in effective display part and the short circuit between the even-line interlace line and sweep trace and the sweep trace.Like this, just may avoid in the manufacture process that will carry out subsequently, occurring having the liquid crystal display of line defct, and suppress the reduction of output.
(second inspection method)
Provide the explanation according to second inspection method of first embodiment of the line defct that is used for detecting on the display panels of liquid crystal display below with said structure.Similar first kind of inspection method carried out second inspection method in the treatment step after forming display panels 1 and before driving IC chip 11 is installed to display panels 1.In the checkout facility 100 that is applied to second inspection method, signal generator divides 102 to produce independently two kinds of inspection signals, first checks the signal and the second inspection signal that is:.Simultaneously, check that signals can be unlike signals for these two kinds, perhaps wherein two can be identical signals.In addition, in checking step, check that one in the signal can be the constant inspection signal that disconnects level that is in for these two kinds.
Particularly, in second inspection method, the probe 101 of checkout facility 100 is connected with the input pad of the pad part 44 of display panels 1.At predetermined regularly place, signal generator divides 102 switching signals to input to switch signal line 54.By the input of switching signal, in suitable timing place, the on-off element 61 of start signal ray examination part 41, first sweep trace are checked the on-off element 62 of part 42 and the on-off element 63 that second sweep trace is checked part 43.
Check in the step first, unlatching based on on-off element 62, stimulus part 103 first check signal input to is connected with first wiring 21 of the first wiring group 20 first check wiring 52A, and check that signal inputs to second inspections that are connected with second wiring 22 of the first wiring group 20 52B that connect up to second.Therefore check that with first signal offers odd-numbered scan lines by the first wiring group 20.Check signal by first,, open the on-off element 7 that is connected with odd-numbered scan lines in effective display part 6 in suitable timing place.
Unlatching based on on-off element 63, stimulus part 103 second check signal input to is connected with the 3rd wiring 33 of the second wiring group 30 the 3rd check wiring 53A, and check that signal inputs to the 4th inspections that are connected with the 4th wiring 34 of the second wiring group 30 53B that connect up to second.Therefore check that signal offers the even-line interlace line by the second wiring group 30 to second.By second input of checking signal,, open the on-off element 7 that is connected with even-line interlace line in effective display part 6 in suitable timing place.
Subsequently, according to first and second inputs of checking signals, can check odd-numbered scan lines in effective display part 6 and the short circuit between the even-line interlace line.
Then, check in the step that based on the unlatching of on-off element 62, stimulus part 103 checks that signal inputs to first and checks that wiring 52A and the 3rd checks wiring 53A to first second.Therefore, check that signal offers odd-numbered scan lines by first wiring 21 of the first wiring group 20 to first, and check that signal offers the even-line interlace line by the 3rd wiring 33 of the second wiring group 30 to first.By first input of checking signal,, open the on-off element 7 that is connected with odd-numbered scan lines in effective display part 6 in suitable timing place.
In addition, based on the unlatching of on-off element 63, stimulus part 103 checks that signal inputs to second and checks that wiring 52B and the 4th checks wiring 53B to second.Therefore check that signal offers odd-numbered scan lines by second wiring 22 of the first wiring group 20 to second, and also check that signal offers the even-line interlace line by the 4th wiring 34 of the second wiring group 30 to second.By second input of checking signal, open the on-off element 7 that is connected with odd-numbered scan lines in effective display part 6 in suitable timing place.
Subsequently, based on first and second inputs of checking signals, check the short circuit that the 3rd wiring the 33 and the 4th of the short circuit between first wiring, 21 and second wiring 22 of the first wiring group 20 and the second wiring group 30 is connected up between 34.Check in the step and the second inspection step in first of second kind of inspection method, when effectively the on-off element 7 of display part 6 is in opening, signal generator divide 102 by signal wire inspection wiring 51 (R, G is B) checking that vision signal inputs to each signal line X.Therefore will check that vision signal writes the display element PX in effective display part 6 of display panels 1.By writing the inspection vision signal, can check the line defct of the various wirings on the display panels 1.
Particularly, as shown in Figure 5, at place regularly when with signal when first wiring, 21 and second wiring 22 of the first wiring group 20 inputs to corresponding odd-numbered scan lines, check that signal and inspection vision signal input to each signal line X to first.Under situation about being short-circuited between odd-numbered scan lines and the even-line interlace line, for example under situation about being short-circuited between sweep trace Y1 and the sweep trace Y2, if check that signal offers corresponding odd-numbered scan lines to first from first wiring, 21 and second wiring 22, first check that signal not only is provided for odd-numbered scan lines Y1 so, Y3, Y5, and be provided for sweep trace Y2.Therefore, open the on-off element 7 of the display element PX that is connected with sweep trace Y2 and the on-off element 7 of the display element PX that is connected with odd-numbered scan lines simultaneously.Under normal circumstances, open and sweep trace Y1, Y3, Y5 ... the on-off element 7 of the display element PX of connection.Yet, owing to the short circuit between sweep trace Y1 and the sweep trace Y2, can open and sweep trace Y1, Y2, Y3, Y5 ... the on-off element 7 of the display element PX of connection.
By this way, check vision signal to signal wire X if provide under the state that each on-off element 7 is unlocked, the corresponding display element PX on the display panels 1 also is unlocked so.By observing the opening of the corresponding display element PX on the display panels 1, just can check the short circuit between the adjacent scanning lines in effective display part 6.
Similarly, when when the 3rd wiring the 33 and the 4th wiring 34 of the second wiring group 30 inputs to signal on corresponding even-line interlace line, check that signal and inspection vision signal input to each signal line X to second at place regularly.Therefore can detect the short circuit between the adjacent scanning lines of checking in effective display part 6.
In addition, as shown in Figure 5, check in the step second, when the 3rd wiring 33 from first wiring, the 21 and second wiring group 30 of the first wiring group 20 inputs to respective scan line to signal, check that signal and inspection vision signal input to each signal line X to first at place regularly.
Under situation about being short-circuited between adjacent first wiring, 21 and second wiring 22 of the first wiring group 20, for example under situation about being short-circuited between wiring W1 and the wiring W3, first check that signal not only is provided for the sweep trace Y1 that is connected with the W1 that connects up so, but also be provided for the sweep trace Y3 that is connected with the W3 that connects up.Therefore, open the on-off element 7 of the display element PX that is connected with sweep trace Y3 and the on-off element 7 of the display element RX that is connected with sweep trace Y1 simultaneously.Under normal circumstances, open and sweep trace Y1, Y5, Y9 ... the on-off element 7 of the display element PX of connection.Yet, owing to the short circuit between wiring W1 and the line W3, can open and sweep trace Y1, Y3, Y5, Y9 ... the on-off element 7 of the display element PX of connection.Therefore can detect the short circuit between first wiring, 21 and second wiring 22 of the first wiring group 20.
In addition, under situation about being short-circuited between adjacent the 3rd wiring the 33 and the 4th wiring 34 of the second wiring group 30, for example under situation about being short-circuited between wiring W2 and the wiring W4, first checks that signal not only is provided for the sweep trace Y2 that is connected with the W2 that connects up, and is provided for the sweep trace Y4 that is connected with the W4 that connects up.Therefore, open the on-off element 7 of the display element PX that is connected with sweep trace Y4 and the on-off element 7 of the display element PX that is connected with sweep trace Y2 simultaneously.Under normal circumstances, open and sweep trace Y2, Y6, Y10 ... the on-off element 7 of the display element PX of connection.Yet, owing to the short circuit between wiring W2 and the W4, can open and sweep trace Y2, Y4, Y6, Y10 ... the on-off element 7 of the display element PX of connection.Therefore can detect the short circuit between the wiring of the 3rd in the second wiring group 30 the 33 and the 4th wiring 34.
Similarly, when the 4th wiring 34 from second wiring, the 22 and second wiring group 30 of the first wiring group 20 inputs to respective scan line to signal, check that signal and inspection vision signal input to each signal line X to second at place regularly.Therefore can detect the short circuit between the 3rd wiring the 33 and the 4th wiring 34 of the short circuit between first wiring, 21 and second wiring 22 of the first wiring group 20 and the second wiring group 30.
In addition, according to above-mentioned second inspection method, except checking the short circuit between the wiring, by opening circuit between the terminal of observing the opening of the display element PX on the display panels 1, also can check the connection pad PD that is connected with driving IC chip 11 and every wiring.Particularly, according to the input of various inspection signals, the opening of observation display element PX.Therefore can check between the 3rd wiring the 33 and the 4th wiring 34 of opening circuit between first wiring, 21 and second wiring 22 of the first wiring group 20, the second wiring group 30 open circuit and sweep trace Y in effective display part 6 (, can not open corresponding display element PX) and signal wire X if open circuit between occur on this segment distance open circuit.
As mentioned above, according to second inspection method, in the liquid crystal display with such layout, just drive signal offers odd-numbered scan lines and the even-line interlace line from the both end sides of effective display part; Checkout facility produces two kinds and checks signal.Check in the step that first checkout facility checks that signal inputs to first wiring and second wiring of the first wiring group to first, and checks that signal inputs to the 3rd wiring and the 4th wiring of the second wiring group to second.Input based on checking signal can accurately detect following line defct: opening circuit between the odd-numbered scan lines in effective display part and the short circuit between the even-line interlace line and sweep trace and the sweep trace.In addition, check in the step that checkout facility checks that signal inputs to first wiring and the 3rd wiring to first, and check that signal inputs to second wiring and the 4th wiring to second second.Input based on checking signal can accurately detect the line defct between the first wiring group and the second wiring group.Therefore can avoid in the manufacture process that will carry out subsequently, occurring having the liquid crystal display of line defct, and the reduction that suppresses to produce number.
Second inspection method needs two steps: check the step of the line defct of the adjacent scanning lines in effective display part, and check the step of forming the line defct between the wiring that is arranged on the sets of lines on the outside, effective display part.Yet, produce two kinds of checkout facilities of checking signal owing to provide, can advantageously reduce the cost of checkout facility.
(second embodiment)
In the explanation of the second embodiment of the present invention, represent the structural detail identical with first embodiment by identical Reference numeral.
As shown in Figure 6, the plane display panels (just main panel 1) that comprises substantial rectangular for liquid crystal display according to an example of the display device of second embodiment.Main panel 1 comprises a pair of substrate (just array base palte 3 and back substrate 4) and places this to the liquid crystal layer between the substrate 5 as optical modulation layer.Main panel 1 comprises rectangle first effective display part 6A of display image.First effective display part 6A is made of a plurality of display element PX that are arranged to matrix.
On-off element 7 is made by for example thin film transistor (TFT) (TFT).On-off element 7 has the gate electrode 7G that is electrically connected with related scans line MY (or with the integrated formation of sweep trace).On-off element 7 has the source electrode 7S that is electrically connected with coherent signal line X (or with the integrated formation of sweep trace).On-off element 7 has the drain electrode 7D that is electrically connected with the pixel capacitors 8 of relevant display element PX.
Back substrate 4 comprise with effective display part 6A in the total backplate 9 of all display element PX.Be arranged to make pixel capacitors 8 relative array base palte 3 and back substrate 4, and be provided with the slit betwixt with backplate 9.Liquid crystal layer 5 is made by the liquid crystal material in the slit that is sealed between array base palte 3 and the back substrate 4.
Main panel 1 comprises the driving IC chip 11 on the periphery 10 that is arranged on first effective display part 6A outside.In example shown in Figure 6, driving IC chip 11 is arranged on the extension 10A of array base palte 3, the end sections 4A that it stretches out and exceeds back substrate 4.Main panel 1 comprises the connection pad PP1 that can be connected with sub-panel 2.In example shown in Figure 6, connect pad PP1 and be arranged on the second extension 10D of array base palte 3 the other end part 4B that it stretches out and has exceeded back substrate 4.Sub-panel 2 has substantially the same structure with main panel 1, thus represent identical structural detail by identical Reference numeral, and omit its detailed description.
As shown in Figure 7, sub-panel 2 comprises a pair of substrate (just array base palte 300 and back substrate 400) and places this liquid crystal layer 500 to being used as between the substrate as optical modulation layer.Sub-panel 2 comprises rectangle second effective display part 6B of display image.Second effective display part 6B is made of a plurality of display element PX that are arranged to matrix.
Array base palte 300 comprises the multi-strip scanning line SY (1 that extends along the line direction of display element PX, 2,3, ... m), many signal line X (1 of extending along the column direction of display element PX, 2,3 ..., n), be arranged on switch electrode 7 and the pixel capacitors 8 that is connected with switch electrode 7 near the intersection point of sweep trace SY and signal wire X for each display element PX.On-off element 7 has the gate electrode 7G that is electrically connected with related scans line SY (or with the integrated formation of sweep trace).Back substrate 400 is included in the backplate 9 total with all display element PX among second effective display part 6B.
The driving IC chip 11 that is installed on the main panel 1 comprises signal wire drive part 11X and signal wire drive part 11Y.Signal wire drive part 11X offers signal wire X on main panel 1 and the sub-panel 2 to drive signal (vision signal).Signal wire drive part 11Y comprise drive signal (sweep signal) export to main panel 1 sweep trace MY the first driver element 11Y1 and drive signal is exported to the second driver element 11Y2 of the sweep trace SY of sub-panel 2.The first driver element 11Y1 and the second driver element 11Y2 are arranged on the both sides of signal wire drive part 11X, so that signal wire drive part 11X is clipped in the middle.
In said structure, be arranged on the signal wire X (1,2,3 on first effective display part 6A of main panel 1, ..., n) be connected pad part PP1 and connect, be arranged on the signal wire X (1,2 on second effective display part 6B of sub-panel 2,3 ..., n) be connected pad part PP2 and connect.By flexible printed circuit board FPC, be arranged on signal wire X on first effective display part 6A (1,2,3 ..., n) be arranged on signal wire X on second effective display part 6B (1,2,3 ..., n) connection.In this structure, signal wire drive part 11X offers signal wire X on main panel 1 and the sub-panel 2 to drive signal (vision signal).
Be electrically connected with the sweep trace MY of first effective display part 6A by the first wiring group, 20, the first driver element 11Y1 on the distolateral 10B that is arranged on periphery 10.The first wiring group 20 comprise the wiring MW that is connected to sweep trace MY (1,2,3,4 ...).By wiring MW (1,2,3,4 ...) the drive signal from first driver element 11Y1 output offer corresponding sweep trace MY (1,2,3,4 ...), thus the display element PX on On/Off first effective display part 6A.That is to say that according to the drive signal that provides from respective scan line MY, controlling packet is contained in the ON/OFF of the on-off element 7 among each display element PX of first effective display part 6A.
Be electrically connected with the sweep trace SY of second effective display part 6B by the second wiring group, 30, the second driver element 11Y2 on the distolateral 10C in addition that is arranged on periphery 10.The second wiring group 30 comprise the wiring SW that is connected to sweep trace SY (1,2,3,4 ...).These wirings SW (1,2,3,4 ...) be connected pad part PP1 connection.On the other hand, be arranged on sweep trace SY on second effective display part 6B of sub-panel 2 (1,2,3,4 ...) be connected pad part PP2 and connect.By flexible printed circuit board FPC be electrically connected wiring SW (1,2,3,4 ...) and the sweep trace SY of second effective display part 6B (1,2,3,4 ...).
In said structure, from the drive signal of second driver element 11Y2 output by wiring SW (1,2,3,4 ...) provide to respective scan line SY (1,2,3,4 ...), thus the display element PX on On/Off second effective display part 6B.That is to say that according to the drive signal that provides from respective scan line SY, controlling packet is contained in the effective ON/OFF of the on-off element 7 among each display element PX of display part 6B.
In colored display type liquid crystal display, main panel 1 and sub-panel 2 comprise multiple display element, for example show the red pixel of red (R), the green pixel and the blue picture element that shows blue (B) of demonstration green (G).Particularly, red pixel comprises the red color light filter that can pass through the light of red main wavelength.Green pixel comprises the green color filter that can pass through the light of green main wavelength.Blue picture element comprises the blue color filter that can pass through the light of blue main wavelength.These color filter are arranged on the first type surface of array base palte or back substrate.
As shown in Figure 8, array base palte 3 comprises the inspection wiring portion 140 of the line defct between the line on the second wiring group 30 that is used to check on the periphery 10.Check that wiring portion 140 comprises that the sweep trace that is equipped with of linking to each other with the second driver element 11Y2 checks part 142 and be used for various signals are input to the pad part 144 of sweep trace inspection part 142.
Signal wire inspection part 142 comprises first wiring, 31 (SW1 that for example connects up, SW3, the SW5 with the second wiring group 30, ...) connect first check wiring 151 and second wiring 32 adjacent (SW2 for example connect up with first wiring 31, SW4, SW6 ...) and connect second check wiring 152.In addition, sweep trace checks that part 142 comprises that first wiring 31 and first checks the second switch element 162 that first on-off element 161 between the wiring 151 and second wiring 32 and second are checked between the wiring 152.First on-off element 161 and second switch element 162 are made of thin film transistor (TFT).
Particularly, the gate electrode 161G of first on-off element 161 is electrically connected with common switch signal wire 153.The drain electrode 161D of first on-off element 161 and relevant first wiring, 31 electrical connections.The source electrode 161S of first on-off element 161 and the relevant first inspection wiring, 151 electrical connections.
The gate electrode 162G of second switch element 162 is electrically connected with common switch signal line 153.The drain electrode 162D of second switch element 162 and relevant second wiring, 32 electrical connections.The source electrode 162S of second switch element 162 and the relevant second inspection wiring, 152 electrical connections.
From the drive signals of input pad 171 and 172 inputs are the inspection signals that are used to check the short circuit between first wiring, 31 and second wiring 32 of the second wiring group 30 at examination phase.From the drive signal of input pad 173 inputs are the open/close switching signals that are used to control first on-off element 161 and second switch element 162 at examination phase.
Liquid crystal display with said structure has such layout: drive signal can be offered the sweep trace from first distolateral effective display part of first effective display part, and drive signal is offered sweep trace from another second distolateral effective display part of first effective display part.Can import second wiring of the vicinity of different individual inspiration signal to the first wiring of different timings place and the second wiring group in this arrangement, so that the sweep trace of the effective display part of drive signal to the second to be provided.Therefore can accurately detect the line defct on the panel, for example the short circuit between the wiring of the second wiring group or every wiring opens circuit.
Corresponding to the position that driving IC chip 11 wherein is set, sweep trace checks that part 142 is arranged on the extension 10A of array base palte 3.Need not explanation, first and second check that wiring 151 and 152 is arranged on the 10A of extension.First and second check wiring 151 and 152 driving IC chip 11 vertically on extend.Like this, when driving IC chip 11 is installed, first and second check wiring 151 and 152 and driving IC chip 11 overlapping.In a word, check that wiring can be arranged on the array base palte and need not increase Outside Dimensions.
(checkout facility)
Provide the explanation of the checkout facility 100 that is used for detecting the line defct on the display panels of liquid crystal display below with said structure.
Following is the checkout facility that is used for display device that is applicable to second embodiment:
The checkout facility that is used for display device, described display device comprises:
The first effective display part that constitutes by a plurality of display elements;
The connection pad that can connect the second effective display part that constitutes by a plurality of display elements; And
The wiring group, it is set in place on the periphery of the outside of first effective display part, and comprises many wirings, provides the display element that is used for On/Off second effective display part to the drive signal of these many wirings by connecting pad;
Described checkout facility comprises:
Signal generation device, it is used to produce the inspection signal that inputs to the first inspection wiring that is connected with first wiring of the first wiring group; And
Pick-up unit, it is used to detect the output signal from the second inspection wiring that is connected with second wiring, and described wiring is adjacent with first wiring.
Particularly, as shown in Figure 9, checkout facility 200 comprises a plurality of probes 201 that can be connected with the input pad of pad part 144; The signal generator that produces multiple signal divides 202, and described signal comprises that inputing to first by probe 201 checks the inspection signal of the wiring 151 or second inspection wiring 152 and the switching signal that inputs to switch signal line 153; Detection signal test section 203, it detects the output signal of checking wiring 152 outputs by probe 201 from the first inspection wiring 151 or second; And switching part 204, its on the one hand optionally signal generator divide 202 and input part 203 between switch switch, optionally check that first wiring 151 and second checks that switch switches between the wiring 152 on the other hand.
(inspection method)
Following is the inspection method that is used for display device that is applicable to second embodiment:
The inspection method that is used for display device comprises:
The first effective display part that constitutes by a plurality of display elements;
The connection pad that can connect the second effective display part that constitutes by a plurality of display elements; And
The wiring group, it is set in place on the periphery of the outside of first effective display part, and comprises many wirings, provides the display element that is used for On/Off second effective display part to the drive signal of these many wirings by connecting pad;
Described inspection method comprises:
Checking that signal inputs to the first inspection wiring that is connected with first wiring of wiring group;
Detection is from the output signal of the second inspection circuit that is connected with adjacent second wiring with first wiring; And
Based on checking the output signal that connects up, the existence of the line defct in the detection wiring group/do not exist from second.
Particularly, in this inspection method, the probe 201 of checkout facility 200 is connected with the input pad of the pad part 144 of main panel 1.Switching part 204 connects signal generator and divides 202 and first to check wiring 151, and connects the input part 203 and the second inspection wiring 152.
Subsequently, at predetermined regularly place, signal generator divides 202 switching signals to input to switch signal line 153.By the input of switching signal, open first on-off element 161 and the second switch element 162 that sweep trace is checked part 142 in suitable timing place.
Based on the unlatching of first on-off element 161, signal generator divides 202 to check that signal inputs to the first inspection wiring 151 that is connected with first wiring 31 of the second wiring group 30.On the other hand, according to the unlatching of second switch element 162, input part 203 detects the output signal from the second inspection wiring 152 that is connected with second wiring 32 of the second wiring group 30.
Then, according to the detection of the input and output signal of checking signal, can check the short circuit between the wiring of first in the second wiring group 30 31 and second wiring 32.Particularly, when from first wiring, 31 input signals of the second wiring group 30, check the 151 input checking signals that connect up at place regularly from first.In this case, if be short-circuited between adjacent first wiring, 31 and second wiring 32 in the second wiring group 30, for example, if be short-circuited between wiring SW1 and the wiring SW2, not only checking that signal offers wiring SW1 but also offers wiring SW2.Therefore, check the inspection signal of wiring 152 outputs by second from the first inspection wiring, 151 inputs.Like this, when 203 detections of input part are checked the inspection signal of wiring 152 from second, can detect the short circuit between first wiring, 31 and second wiring 32.
Similarly, connecting signal generators at switching part 204 divides 202 and second to check wiring 152 and is connected input part 203 and first checks under 151 the situation of connecting up, from the second inspection wiring, 152 input checking signals, and detection is from the output signal of the first inspection wiring 151.Therefore can detect the short circuit between the wiring of first in the second wiring group 30 31 and second wiring 32.
As mentioned above, according to this inspection method, drive signal can be provided to liquid crystal display having from the layout of the main panel of the both end sides of effective display part and sub-panel, in different timings place, checkout facility will check that signal inputs in the first adjacent wiring and second wiring, described first wiring and second wiring constitute the wiring group is connected with the sweep trace of sub-panel, and detection is connected up from adjacent first and second another the output signal in connecting up.Detection based on the input and output signal of checking signal can accurately detect the line defct in the wiring group.By this way, the stage before coupling main panel and sub-panel can be detected the line defct that drive signal offers the wiring group of sub-panel.Like this, can avoid in the manufacture process that will carry out subsequently, occurring having the main panel of line defct, and suppress the reduction of output.
The present invention is not limited to the foregoing description.In fact, under the situation that does not break away from spirit of the present invention, can change structural detail.Can obtain various inventions by the disclosed in an embodiment structural detail of appropriate combination.For example, can omit a part of structural detail in disclosed in an embodiment all structural details.In addition, can make up structural detail among the different embodiment suitably.
Display device of the present invention is not limited to above-mentioned liquid crystal display.The present invention goes for having the multiple display device that the first wiring group and the second wiring group are arranged on the layout on the both end sides of effective display part respectively.For example, the present invention is applicable to the organic electroluminescent display device that comprises as the self-emission device of display element.
Claims (17)
1. display device is characterized in that comprising:
The effective display part that constitutes by a plurality of display elements;
The first wiring group, it is set in place on the periphery of the outside of effective display part distolateral, and comprises the wiring that is connected with odd-numbered scan lines, and the drive signal that is provided to this odd-numbered scan lines is used for the display element of On/Off on odd-numbered line;
The second wiring group, it is arranged on periphery in addition distolateral, and comprises the wiring that is connected with the even-line interlace line, and the drive signal that is provided to this even-line interlace line is used for the display element of On/Off on even number line;
The first inspection wiring that is connected with first wiring of the first wiring group;
The second inspection wiring that is connected with second wiring of the first wiring group, described second wiring is adjacent with first wiring;
The 3rd inspection wiring that is connected with the 3rd wiring of the second wiring group; With
The 4th inspection wiring that is connected with the 4th wiring of the second wiring group, described the 4th wiring is adjacent with the 3rd wiring.
2. according to the display device of claim 1, it is characterized in that the end of each in the first to fourth inspection wiring has the input pad of the input that allows drive signal.
3. according to the display device of claim 1, it is characterized in that effectively the display part is arranged on the display panels, wherein inserts liquid crystal display layer between array base palte and back substrate.
4. according to the display device of claim 3, it is characterized in that first to fourth checks that wiring is arranged on the extension of end sections that stretching out of array base palte exceed back substrate.
5. according to the display device of claim 4, it is characterized in that, also comprise driving IC chip, it is arranged on first to fourth and checks on the set regional corresponding position of wiring.
6. according to the display device of claim 5, it is characterized in that, driving IC chip comprise to odd-numbered scan lines provide drive signal first driver element, to the even-line interlace line second driver element of drive signal is provided and be clipped in first driver element and second driver element between the signal wire drive part.
7. inspection method that is used for display device, described display device is characterised in that and comprises:
The effective display part that constitutes by a plurality of display elements;
The first wiring group, it is set in place on the periphery of the outside of effective display part distolateral, and comprises the wiring that is connected with odd-numbered scan lines, and the drive signal that is provided to this odd-numbered scan lines is used for the display element of On/Off on odd-numbered line;
The second wiring group, it is arranged on periphery in addition distolateral, and comprises the wiring that is connected with the even-line interlace line, and the drive signal that is provided to this even-line interlace line is used for the display element of On/Off on even number line;
Described inspection method comprises:
Check that signal inputs to the first inspection wiring that is connected with first wiring of the first wiring group to first, check that signal inputs to the second inspection wiring that is connected with second wiring of the first wiring group to second, described second wiring is adjacent with first wiring, check that signal inputs to the 3rd inspection wiring that is connected with the 3rd wiring of the second wiring group to the 3rd, check that signal inputs to the 4th inspection wiring that is connected with the 4th wiring of the second wiring group to the 4th, described the 4th wiring is adjacent with the 3rd wiring; And
Based on the input of first to fourth inspection signal, odd-numbered scan lines in line defct, the line defct in the second wiring group and effective display part of inspection in the first wiring group and the line defct in the even-line interlace line.
8. inspection method that is used for display device, described display device is characterised in that and comprises:
The effective display part that constitutes by a plurality of display elements;
The first wiring group, it is set in place on the periphery of the outside of effective display part distolateral, and comprises the wiring that is connected with odd-numbered scan lines, and the drive signal that is provided to this odd-numbered scan lines is used for the display element of On/Off on odd-numbered line; And
The second wiring group, it is arranged on periphery in addition distolateral, and comprises the wiring that is connected with the even-line interlace line, and the drive signal that is provided to this even-line interlace line is used for the display element of On/Off on even number line;
Described inspection method comprises:
The first inspection signal is inputed to first inspection wiring that is connected with first wiring of the first wiring group and the second inspection wiring that is connected with second wiring of the first wiring group, described second wiring is adjacent with first wiring, second check signal input to is connected with the 3rd wiring of the second wiring group the 3rd check wiring and is connected with the 4th wiring of the second wiring group the 4th check wiring, described the 4th wiring and the 3rd is connected up adjacent;
Based on first and second inputs of checking signals, check odd-numbered scan lines in effective display part and the line defct in the even-line interlace line;
Check that signal inputs to the first inspection wiring and the 3rd and checks wiring and check that signal inputs to the second inspection wiring and the 4th and checks wiring to second to first; And
Based on the input of the first and second inspection signals, check the defective in the first wiring group and the second wiring group.
9. checkout facility that is used for display device, described display device is characterised in that and comprises:
The effective display part that constitutes by a plurality of display elements;
The first wiring group, it is set in place on the periphery of the outside of effective display part distolateral, and comprises the wiring that is connected with odd-numbered scan lines, and the drive signal that is provided to this odd-numbered scan lines is used for the display element of On/Off on odd-numbered line; And
The second wiring group, it is arranged on periphery in addition distolateral, and comprises the wiring that is connected with the even-line interlace line, and the drive signal that is provided to this even-line interlace line is used for the display element of On/Off on even number line;
Described checkout facility comprises:
Be used to produce the signal generation device of checking signal; And
Signal input apparatus, it is used for the inspection signal by the signal generation device generation is inputed to the first inspection wiring that is connected with first wiring of the first wiring group, the second inspection wiring that is connected with second wiring of the first wiring group respectively, described second wiring is adjacent with first wiring, is connected with the 3rd wiring of the second wiring group the 3rd check wiring and is connected with the 4th wiring of the second wiring group the 4th check and connect up, the described the 4th connect up and the 3rd connect up adjacent.
10. according to the checkout facility of claim 9, it is characterized in that, signal generation device produce respectively with first check wiring, second check wiring, the 3rd check wiring and the 4th check wiring relevant first check that signal, second checks that signal, the 3rd checks signal and the 4th inspection signal.
11. the checkout facility according to claim 9 is characterized in that, signal generation device produces first and checks the signal and the second inspection signal, and
Check in the step first, signal input apparatus checks that signal inputs to first and checks the wiring and the second inspection wiring to first, check that signal inputs to the 3rd and checks wiring and the 4th inspection wiring to second, check in the step second, signal input apparatus checks that signal inputs to first and checks wiring and the 3rd inspection wiring to first, checks that signal inputs to second and checks wiring and the 4th inspection wiring to second.
12., it is characterized in that also comprising according to the checkout facility of claim 9:
First probe that can be connected with the input pad of an end that is arranged on the first inspection line;
Second probe that can be connected with the input pad of an end that is arranged on the second inspection line;
The 3rd probe that can be connected with the input pad of an end that is arranged on the 3rd inspection line; And
The four point probe that can be connected with the input pad of an end that is arranged on the 4th inspection line.
13. the display device with the first effective display part that is made of a plurality of display elements, described display device is characterised in that and comprises:
The connection pad that can connect the second effective display part that constitutes by a plurality of display elements;
The first wiring group, it is set in place on the periphery of the outside of first effective display part distolateral, and comprises many wirings, and the drive signal that is provided to these many wirings is used for the display element on On/Off first effective display part;
The second wiring group, it is arranged on periphery in addition distolateral, and comprises many wirings, is used for display element on On/Off second effective display part by connecting drive signal that pad is provided to these many wirings;
The first inspection wiring that is connected with first wiring of the second wiring group;
The second inspection wiring that is connected with second wiring of the second wiring group, described wiring is adjacent with first wiring.
14. the display device according to claim 13 is characterized in that, checks that first and second each a end sections of wiring is provided with the input pad of the input that allows drive signal.
15. the display device according to claim 13 is characterized in that, also comprises by connecting the flexible printed circuit board FPC that pad is electrically connected with second effective display part.
16. the display device according to claim 13 is characterized in that, the wiring of the second wiring group is connected with the sweep trace of second effective display part by connecting pad.
17. the display device according to claim 13 is characterized in that, the signal wire of first effective display part is connected with the signal wire of second effective display part by connecting pad.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004231107 | 2004-08-06 | ||
| JP2004231110A JP4864300B2 (en) | 2004-08-06 | 2004-08-06 | Display device, display device inspection method, and display device inspection device |
| JP2004231110 | 2004-08-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749813A CN1749813A (en) | 2006-03-22 |
| CN100381878C true CN100381878C (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101132297A Expired - Fee Related CN100381878C (en) | 2004-08-06 | 2005-08-05 | Display device, inspection method for display device, and inspection device for display device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4864300B2 (en) |
| CN (1) | CN100381878C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4886278B2 (en) * | 2005-11-22 | 2012-02-29 | 東芝モバイルディスプレイ株式会社 | Display device |
| CN101777295B (en) * | 2010-01-29 | 2012-07-18 | 信利半导体有限公司 | Detection line wiring method and manufacturing method of OLED (Organic Light Emitting Diode) display |
| CN101789208B (en) * | 2010-01-29 | 2012-10-03 | 信利半导体有限公司 | Detection line wiring method and manufacturing method of organic light-emitting diode (OLED) displays |
| CN104732947B (en) | 2015-04-16 | 2017-02-22 | 京东方科技集团股份有限公司 | Driving chip, driving board and method for testing same, and display device |
| US9872068B2 (en) | 2015-07-24 | 2018-01-16 | Nxp Usa, Inc. | Interconnecting system, video signal transmitter and video signal receiver for transmitting an N-symbol data signal |
| US9871988B2 (en) | 2015-07-24 | 2018-01-16 | Nxp Usa, Inc. | Interconnecting system, video signal transmitter and video signal receiver for transmitting an N-symbol data signal |
| CN109633947B (en) * | 2019-02-13 | 2021-09-21 | 昆山龙腾光电股份有限公司 | Testing system and testing method for wiring |
| CN113744631B (en) * | 2020-05-28 | 2023-08-29 | 元太科技工业股份有限公司 | display panel |
| TWI740516B (en) | 2020-05-28 | 2021-09-21 | 元太科技工業股份有限公司 | Display panel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381827A (en) * | 2001-04-19 | 2002-11-27 | 精工爱普生株式会社 | Electrod driving device and electronic instrument |
| CN1469173A (en) * | 2002-06-19 | 2004-01-21 | ������������ʽ���� | Active matrix base plate and display device |
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| JP2001265248A (en) * | 2000-03-14 | 2001-09-28 | Internatl Business Mach Corp <Ibm> | Active matrix display device, and inspection method therefor |
| JP2002328627A (en) * | 2001-04-27 | 2002-11-15 | Seiko Epson Corp | Inspection method of display device |
| JP4013503B2 (en) * | 2001-08-24 | 2007-11-28 | セイコーエプソン株式会社 | Inspection method for electro-optic panel |
| JP2003157053A (en) * | 2001-11-19 | 2003-05-30 | Matsushita Electric Ind Co Ltd | Liquid crystal display device, and inspection method and device therefor |
| JP4006304B2 (en) * | 2002-09-10 | 2007-11-14 | 株式会社 日立ディスプレイズ | Image display device |
-
2004
- 2004-08-06 JP JP2004231110A patent/JP4864300B2/en active Active
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2005
- 2005-08-05 CN CNB2005101132297A patent/CN100381878C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381827A (en) * | 2001-04-19 | 2002-11-27 | 精工爱普生株式会社 | Electrod driving device and electronic instrument |
| CN1469173A (en) * | 2002-06-19 | 2004-01-21 | ������������ʽ���� | Active matrix base plate and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4864300B2 (en) | 2012-02-01 |
| JP2006047851A (en) | 2006-02-16 |
| CN1749813A (en) | 2006-03-22 |
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Owner name: TOSHIBA MOBILE DISPLAY CO., LTD. Free format text: FORMER NAME: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY LTD. Owner name: JAPAN DISPLAY MIDDLE INC. Free format text: FORMER NAME: TOSHIBA MOBILE DISPLAY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: Saitama Prefecture, Japan Patentee after: JAPAN DISPLAY Inc. Address before: Saitama Prefecture, Japan Patentee before: Toshiba Mobile Display Co.,Ltd. |
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Address after: Saitama Prefecture, Japan Patentee after: Toshiba Mobile Display Co.,Ltd. Address before: Tokyo, Japan Patentee before: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20080416 Termination date: 20190805 |