CN101661200A - Liquid crystal display array substrate and wire break detection method thereof - Google Patents
Liquid crystal display array substrate and wire break detection method thereof Download PDFInfo
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- CN101661200A CN101661200A CN200810119461A CN200810119461A CN101661200A CN 101661200 A CN101661200 A CN 101661200A CN 200810119461 A CN200810119461 A CN 200810119461A CN 200810119461 A CN200810119461 A CN 200810119461A CN 101661200 A CN101661200 A CN 101661200A
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Abstract
The invention provides a liquid crystal display array substrate and a wire break detection method thereof. The array substrate comprises a display area and a detection area, wherein grid lines servingas signal wires and data wires are arranged in the display area; and a testing wire and a shift selection switch device are arranged in the detection area. One end of the testing wire is connected with one end of each signal wire; the other end of each signal wire is connected with the shift selection switch device; and the shift selection switch device is connected with detection equipment whichis used for determining the break of the signal wires. The wire break detection method comprises that: the testing wire inputs loading signals to all grid lines or data wires; the shift selection switch device is sequentially and selectively connected with the grid lines or data wires and outputs grid line signals or data wire signals to the detection equipment; and the detection equipment judgesif the grid lines or data wires are broken according to the grid line signals and the data wire signals. As the testing inputs the loading signals into the signals wires and the shift selection switch device acquires signals in the signal wires, the method can effectively and accurately detect the break of the gird lines or data wires.
Description
Technical field
The present invention relates to lcd technology, relate in particular to a kind of LCD (Liquid Crystal Display) array substrate and wire break detection method thereof.
Background technology
Advantages such as that LCD (Liquid Crystal Display, be called for short LCD) has is ultra-thin, radiationless, flicker free and energy consumption are little have become present main flow display.In the LCD manufacture process, the detection of LCD (Liquid Crystal Display) array substrate is an important step.
Figure 13 is the schematic diagram of the bad detection of prior art LCD, has utilized liquid crystal molecule to change and the characteristic of deflection with electric field.As shown in figure 13, the bad checkout equipment of prior art comprises voltage pattern image optical system (Voltage Image Optics System is called for short VIOS) 101, modulator 102, test liquid crystal 104 and reflecting plate 105.Its testing process is: bad checkout equipment is arranged on the top of array base palte 106, powers up for signal wire (grid line or data line) on the array base palte 106 and make array base palte 106 produce electric fields, this electric field makes test with liquid crystal 104 deflections.Voltage pattern image optical system 101 sends directional light 103, the test that directional light 103 passes modulator 102 and deflection arrives reflecting plate 105 with liquid crystal 104 backs, reflecting plate 105 forms reflected light image with light reflected back voltage pattern image optical system 101 in voltage pattern image optical system 101.If it is bad that array base palte 106 does not have, then test is regular with the deflection angle of liquid crystal molecule in the liquid crystal 104, and the reflected light image that voltage pattern image optical system 101 forms is regular; If have badly on the array base palte 106, then the electric field of defective region changes, and will change with the deflection angle of the corresponding liquid crystal molecule of defective region, and the rule that voltage pattern image optical system 101 forms reflected light images just changes.There is a Charge Coupled Device (CCD) (ChargeCoupled Device voltage pattern image optical system 101 inside, be called for short CCD), 4K * 4K CCD pixel wherein arranged, a pixel of the corresponding array base palte of each CCD pixel, the CCD pixel region that rule changes in the reflected light image is the defective region on the corresponding array base palte.
LCD (Liquid Crystal Display) array substrate bad comprises that pixel is bad and broken string is bad, though that the above-mentioned detection method of prior art can detect pixel is bad, is not suitable for the bad detection of breaking.The common way of prior art is that a setting value is set, and when the number of continuous bad point surpassed this setting value, it was bad promptly to be judged to be broken string.But actual the use shows that this detection method of prior art can not judge exactly that broken string is bad, makes troubles for the analysis after the LCD array base palte detects.
Summary of the invention
The purpose of this invention is to provide a kind of LCD (Liquid Crystal Display) array substrate and wire break detection method thereof, effectively solve existing detection method and can not detect the bad technological deficiency of broken string exactly.
For achieving the above object, the present invention proposes a kind of LCD (Liquid Crystal Display) array substrate, comprise viewing area and the surveyed area that is positioned at periphery, described viewing area, be provided with grid line and data line in the described viewing area as signal wire, be provided with p-wire and displacement selector switch device in the described surveyed area, described p-wire is connected with an end of signal wire, the other end of described signal wire connects described displacement selector switch device, and described displacement selector switch device is connected with the checkout equipment of judging the signal wire broken string.
For achieving the above object, the invention allows for a kind of wire break detection method of LCD (Liquid Crystal Display) array substrate, comprising:
The invention provides a kind of LCD (Liquid Crystal Display) array substrate and wire break detection method thereof, by surveyed area p-wire and displacement selector switch device are set at array base palte, import load signal by p-wire to each grid line or data line, gather signal on each grid line or the data line by displacement selector switch device, therefore make the present invention can detect grid line broken string or broken data wire efficiently and accurately, for the analysis after the LCD (Liquid Crystal Display) array substrate detection provides reliable foundation.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of LCD (Liquid Crystal Display) array substrate first embodiment of the present invention;
Fig. 2 is a kind of signal schematic representation of first embodiment of the invention testing process;
Fig. 3 is the another kind of signal schematic representation of first embodiment of the invention testing process;
Fig. 4 is the structural representation of LCD (Liquid Crystal Display) array substrate second embodiment of the present invention;
Fig. 5 is the structural representation of LCD (Liquid Crystal Display) array substrate the 3rd embodiment of the present invention;
Fig. 6 is a kind of signal schematic representation of third embodiment of the invention testing process;
Fig. 7 is the another kind of signal schematic representation of third embodiment of the invention testing process;
Fig. 8 is the structural representation of LCD (Liquid Crystal Display) array substrate the 4th embodiment of the present invention;
Fig. 9 is the structural representation of LCD (Liquid Crystal Display) array substrate the 5th embodiment of the present invention;
Figure 10 is the process flow diagram of LCD (Liquid Crystal Display) array substrate wire break detection method first embodiment of the present invention;
Figure 11 is the process flow diagram of LCD (Liquid Crystal Display) array substrate wire break detection method second embodiment of the present invention;
Figure 12 is the process flow diagram of LCD (Liquid Crystal Display) array substrate wire break detection method the 3rd embodiment of the present invention;
Figure 13 is the schematic diagram of the bad detection of prior art LCD.
Description of reference numerals:
The 1-viewing area; The 2-surveyed area; The 11-grid line;
The 12-data line; 21-grid p-wire; 22-grid displacement selector switch device;
23-data test line; 24-data shift selector switch device; 31-grid checkout equipment;
The 32-data-detection apparatus; 41-grid timing sequencer; 42-data time sequence generator;
5-cuts off line; The 221-control end; The 222-input end;
The 223-output terminal; The 241-control end; The 242-input end;
The 243-output terminal; 101-voltage pattern image optical system; The 102-modulator;
The 103-directional light; 104-test liquid crystal; The 105-reflecting plate;
The 106-array base palte.
Embodiment
Fig. 1 is the structural representation of LCD (Liquid Crystal Display) array substrate first embodiment of the present invention, and as shown in Figure 1, in the present embodiment, LCD (Liquid Crystal Display) array substrate comprises viewing area 1 and surveyed area 2, and surveyed area 2 is positioned at the periphery of viewing area 1.Be provided with M bar grid line 11 and N bar data line 12 in the viewing area 1, M, N are natural number, M bar grid line 11 and N bar data line 12 define M * N sub-pix zone, be formed with pixel electrode and thin film transistor (TFT) in each sub-pix zone, said structure is identical with the array structure of prior art, repeats no more.Be provided with a grid p-wire 21 and a grid displacement selector switch device 22 in the surveyed area 2, grid p-wire 21 is arranged on a side of viewing area 1, be connected with an end of all M bar grid line 11, be used for to M bar grid line 11 input load signal, grid displacement selector switch device 22 is arranged on the opposite side of viewing area 1, be connected with the other end of all M bar grid line 11, be used for gathering the grid line signals from M bar grid line 11 successively, and the grid line signal of gathering is sent to grid checkout equipment 31; Grid checkout equipment 31 is connected with grid displacement selector switch device 22, is used for judging according to the grid line signal of each grid line whether grid line breaks.
In the above-mentioned technical solutions of this embodiment, grid displacement selector switch device 22 comprises control end 221, input end 222 and output terminal 223, and its effect is under the control of control end 221, and input end 222 is delivered to output terminal 223 successively with M grid line signal on the M bar grid line.Particularly, input end 222 is connected with all M bar grid lines 11, be used for gathering the grid line signal from M bar grid line 11 successively, output terminal 223 is connected with grid checkout equipment 31, the grid line signal that is used for gathering sends to grid checkout equipment 31, and control end 221 is connected with grid timing sequencer 41, is used for receiving timing control signal from grid timing sequencer 41, and, make input end 222 gather the grid line signal from M bar grid line 11 successively according to timing control signal gating M bar grid line 11 successively.Array base palte with 17 inches SXGA is an example, M=1024, and therefore 1024 input ends 222 are connected with 1024 grid lines 11 respectively.
In actual use, the basic structure of present embodiment grid displacements selector switch device is suitable with the function of lining by line scan in the gate drivers, and the function of lining by line scan in the gate drivers can be under the timing control signal effect be sent to the grid start signal each bar grid line successively.Because gate drivers can adopt GOA (Gate On Array) technology, on array base palte, directly form by composition technology, therefore present embodiment grid displacement selector switch device also can be formed directly into the surveyed area of array base palte, its inner basic structure repeats no more here for those skilled in the art know.In addition, also be provided with between the viewing area 1 of present embodiment LCD (Liquid Crystal Display) array substrate and the surveyed area 2 and cut off line 5, after detection is finished in the box cutting technique, will cut off getting in touch of grid p-wire and grid displacement selector switch device and viewing area according to cutting off line 5 cutting array base paltes.
Testing process below by present embodiment LCD (Liquid Crystal Display) array substrate grid line broken string further specifies technical scheme of the present invention.
Fig. 2 is a kind of signal schematic representation of first embodiment of the invention testing process.The grid p-wire is to M bar grid line input load signal Z, load signal Z is a high level signal, if it is bad that breaking does not appear in grid line, then the grid line signal of grid displacement selector switch device output is a high level, if it is bad that broken string has appearred in grid line, the high level signal that loads can't transmit, and then the grid line signal of grid displacement selector switch device output is a low level.As shown in Figure 2, the timing control signal T that the grid timing sequencer sends is from the control end input of grid displacement selector switch device, timing control signal T is the one-period signal, the high level of each periodic signal is corresponding to the gating time of a grid line, and therefore the high level in K cycle is corresponding to the gating time of K bar grid line.Grid displacement selector switch device is according to this timing control signal T each grid line of gating successively, the signal of each grid line (as the signal L1 of article one grid line, the signal L2...... of second grid line) enters grid displacement selector switch device successively from each input end, and exports successively from output terminal.Because the grid line signal of each grid line is a high level when broken string not occurring, so output terminal will continue to export high level.It is bad to suppose that broken string has appearred in K bar grid line, and therefore when grid displacement selector switch device gating K bar grid line, the grid line signal G of output terminal output is a low level.After the grid line signal G of grid displacement selector switch device output enters the grid checkout equipment, the grid checkout equipment can judge whether to exist the grid line broken string according to grid line signal G, further, the grid checkout equipment also receives timing control signal, and can judge that according to timing control signal T broken string appears in which bar grid line.
Fig. 3 is the another kind of signal schematic representation of first embodiment of the invention testing process.The grid p-wire is to M bar grid line input load signal Z, and load signal Z is the one-period signal, and the high level of each periodic signal is carried on the grid line.If it is bad that breaking does not appear in grid line, then the grid line signal of grid displacement selector switch device output is the high level of this periodic signal, if it is bad that breaking has appearred in grid line, the periodic signal of loading can't transmit, and then the grid line signal of grid displacement selector switch device output is a low level signal.As shown in Figure 3, the timing control signal T that the grid timing sequencer sends is from the control end input of grid displacement selector switch device, timing control signal T is the one-period signal, the high level of each periodic signal is corresponding to the gating time of a grid line, and therefore the high level in K cycle is corresponding to the gating time of K bar grid line.Grid displacement selector switch device is according to this timing control signal T each grid line of gating successively, the signal of each grid line (as the signal L1 of article one grid line, the signal L2...... of second grid line) enters grid displacement selector switch device successively from each input end, and exports successively from output terminal.Because the grid line signal of each grid line is a pulse signal when broken string not occurring, so output terminal will continue output pulse signal.It is bad to suppose that broken string has appearred in K bar grid line, and therefore when grid displacement selector switch device gating K bar grid line, the grid line signal G of output terminal output is a low level.After the grid line signal G of grid displacement selector switch device output enters the grid checkout equipment, the grid checkout equipment can judge whether to exist the grid line broken string according to grid line signal G, further, the grid checkout equipment also receives timing control signal, and can judge that according to timing control signal T broken string appears in which bar grid line.
Present embodiment provides a kind of LCD (Liquid Crystal Display) array substrate, by surveyed area grid p-wire and grid displacement selector switch device are set in the periphery, viewing area, import load signal by the grid p-wire to each grid line, gather the grid line signal of each grid line by grid displacement selector switch device, therefore make the present invention can detect the grid line broken string efficiently and accurately, for the analysis after the LCD (Liquid Crystal Display) array substrate detection provides reliable foundation.
Fig. 4 is the structural representation of LCD (Liquid Crystal Display) array substrate second embodiment of the present invention.As shown in Figure 4, present embodiment is on the basis of the aforementioned first embodiment technical scheme, is provided with two grid p-wires 21 and a grid displacement selector switch device 22 in the surveyed area 2.Article two, grid p-wire 21 is arranged on a side of viewing area 1, and wherein a grid p-wire 21 is connected with the grid line 11 of all odd-numbered lines, and another grid p-wire 21 is connected with the grid line 11 of all even number lines, all is used for to grid line input load signal.In the practical application, two grid p-wires 21 both can input high level, also can import periodic signal respectively, and the periodic signal of two grid p-wires is reverse each other.Grid displacements selector switch device 22 is arranged on the opposite side of viewing area 1, is connected with the other end of all grid line 11, be used for gathering the grid line signals from grid line 11 successively, and with the grid line signal gathered to 31 transmissions of grid checkout equipment; Grid checkout equipment 31 is connected with grid displacement selector switch device 22, is used for judging according to the grid line signal of each grid line whether grid line breaks.The version of present embodiment each several part, principle of work and testing process and aforementioned first embodiment are basic identical, not only can detect the grid line broken string efficiently and accurately, and make full use of prior art short circuit measurement structure, and form simplifies the structure.
Fig. 5 is the structural representation of LCD (Liquid Crystal Display) array substrate the 3rd embodiment of the present invention, and as shown in Figure 5, in the present embodiment, LCD (Liquid Crystal Display) array substrate comprises viewing area 1 and surveyed area 2, and surveyed area 2 is positioned at the periphery of viewing area 1.Be provided with M bar grid line 11 and N bar data line 12 in the viewing area 1, M, N are natural number, M bar grid line 11 and N bar data line 12 define M * N sub-pix zone, be formed with pixel electrode and thin film transistor (TFT) in each sub-pix zone, said structure is identical with the array structure of prior art, repeats no more.
Be provided with a data test line 23 and a data displacement selector switch device 24 in the surveyed area 2, data test line 23 is arranged on a side of viewing area 1, be connected with an end of all N bar data line 12, be used for to N bar data line 12 input load signal, data shift selector switch device 24 is arranged on the opposite side of viewing area 1, be connected with the other end of all N bar data line 12, be used for successively image data line signal from the N bar data line 12, and the data line signal of gathering is sent to data-detection apparatus 32; Whether data-detection apparatus 32 is connected with data shift selector switch device 24, be used for breaking according to the data line signal judgment data line of each data line.
In the above-mentioned technical solutions of this embodiment, data shift selector switch device 24 comprises control end 241, input end 242 and output terminal 243, its effect is under the control of control end 241, and input end 242 is delivered to output terminal 243 successively with N data line signal on the N bar data line.Particularly, input end 242 is connected with all N bar data lines 12, be used for successively image data line signal from the N bar data line 12, output terminal 243 is connected with data-detection apparatus 32, the data line signal that is used for gathering sends to data-detection apparatus 32, control end 241 is connected with data time sequence generator 42, be used for receiving timing control signal from data time sequence generator 42, and, make input end 242 image data line signal from the N bar data line 12 successively according to timing control signal gating N bar data line 12 successively.Array base palte with 17 inches SXGA is an example, N=3840, and therefore 3840 input ends 242 are connected with 3840 data lines 12 respectively.
Present embodiment data shift selector switch device is identical with the function and the version of first embodiment grid displacement selector switch device, repeats no more.Also be provided with between the viewing area 1 of present embodiment LCD (Liquid Crystal Display) array substrate and the surveyed area 2 and cut off line 5, after detection is finished in the box cutting technique, to cut off getting in touch of data test line and data shift selector switch device and viewing area according to cutting off line 5 cutting array base paltes.
Testing process below by present embodiment LCD (Liquid Crystal Display) array substrate broken data wire further specifies technical scheme of the present invention.
Fig. 6 is a kind of signal schematic representation of third embodiment of the invention testing process.Data test alignment N bar data line input load signal Z, load signal Z is a high level signal, if it is bad that breaking does not appear in data line, then the data line signal of data shift selector switch device output is a high level, if it is bad that broken string has appearred in data line, the high level signal that loads can't transmit, and then the data line signal of data shift selector switch device output is a low level.As shown in Figure 6, the timing control signal T that the data time sequence generator sends is from the control end input of data shift selector switch device, timing control signal T is the one-period signal, the high level of each periodic signal is corresponding to the gating time of a data line, and therefore the high level in K cycle is corresponding to the gating time of K bar data line.Data shift selector switch device is according to this timing control signal T each data line of gating successively, the signal of each data line (as the signal D1 of article one data line, the signal D2...... of second data line) enters data shift selector switch device successively from each input end, and exports successively from output terminal.Because the data line signal of each data line is a high level when broken string not occurring, so output terminal will continue to export high level.It is bad to suppose that broken string has appearred in K bar data line, and therefore when data shift selector switch device gating K bar data line, the data line signal D of output terminal output is a low level.After the data line signal D of data shift selector switch device output enters data-detection apparatus, data-detection apparatus can judge whether to exist broken data wire according to data line signal D, further, data-detection apparatus also receives timing control signal, and can judge that according to timing control signal T broken string appears in which bar data line.
Fig. 7 is the another kind of signal schematic representation of third embodiment of the invention testing process.Data test alignment N bar data line input load signal Z, load signal Z is the one-period signal, the high level of each periodic signal is carried on the data line.If it is bad that breaking does not appear in data line, then the data line signal of data shift selector switch device output is the high level of this periodic signal, if it is bad that broken string has appearred in data line, the periodic signal that loads can't transmit, and then the data line signal of data shift selector switch device output is a low level signal.As shown in Figure 7, the timing control signal T that the data time sequence generator sends is from the control end input of data shift selector switch device, timing control signal T is the one-period signal, the high level of each periodic signal is corresponding to the gating time of a data line, and therefore the high level in K cycle is corresponding to the gating time of K bar data line.Data shift selector switch device is according to this timing control signal T each data line of gating successively, the signal of each data line (as the signal D1 of article one data line, the signal D2...... of second data line) enters data shift selector switch device successively from each input end, and exports successively from output terminal.Because the data line signal of each data line is a pulse signal when broken string not occurring, so output terminal will continue output pulse signal.It is bad to suppose that broken string has appearred in K bar data line, and therefore when data shift selector switch device gating K bar data line, the data line signal D of output terminal output is a low level.After the data line signal D of data shift selector switch device output enters data-detection apparatus, data-detection apparatus can judge whether to exist broken data wire according to data line signal D, further, data-detection apparatus also receives timing control signal, and can judge that according to timing control signal T broken string appears in which bar data line.
Present embodiment provides a kind of LCD (Liquid Crystal Display) array substrate, by surveyed area data test line and data shift selector switch device are set in the periphery, viewing area, by each data line input load signal of data test alignment, gather the data line signal of each data line by data shift selector switch device, therefore make the present invention can detect broken data wire efficiently and accurately, for the analysis after the LCD (Liquid Crystal Display) array substrate detection provides reliable foundation.
Fig. 8 is the structural representation of LCD (Liquid Crystal Display) array substrate the 4th embodiment of the present invention.As shown in Figure 8, present embodiment is on the basis of aforementioned the 3rd embodiment technical scheme, be provided with two data test lines 23 and a data displacement selector switch device 24 in the surveyed area 2, article two, data test line 23 is arranged on a side of viewing area 1, wherein a data test line 23 is connected with the data line 12 of all odd columns, another data test line 23 is connected with the data line 12 of all even columns, all be used for to data line input load signal, data shift selector switch device 24 is arranged on the opposite side of viewing area 1, be connected with the other end of all data line 12, be used for successively image data line signal from the data line 12, and the data line signal of gathering is sent to data-detection apparatus 32; Whether data-detection apparatus 32 is connected with data shift selector switch device 24, be used for breaking according to the data line signal judgment data line of each data line.The version of present embodiment each several part, principle of work and testing process and aforementioned the 3rd embodiment are basic identical, not only can detect broken data wire efficiently and accurately, and have made full use of prior art short circuit measurement structure, and form simplifies the structure.
Fig. 9 is the structural representation of LCD (Liquid Crystal Display) array substrate the 5th embodiment of the present invention.As shown in Figure 9, present embodiment is the assembled scheme of aforementioned first embodiment and the 3rd embodiment, be provided with a grid p-wire 21, grid displacement selector switch device 22, a data test line 23 and a data displacement selector switch device 24 in the surveyed area 2, grid p-wire 21 is identical with first embodiment with version, function and the detection method of grid displacement selector switch device 22, data test line 23 is identical with the 3rd embodiment with version, function and the detection method of data shift selector switch device 24, repeats no more here.In the practical application, grid checkout equipment and data-detection apparatus can be structure as a whole, and grid timing sequencer and data time sequence generator can be structure as a whole.
On the basis of the above embodiment of the present invention, also can form the assembled scheme of first embodiment and the 4th embodiment, be to be provided with a grid p-wire 21 and two data test lines 23 in the surveyed area 2, can also form the assembled scheme of second embodiment and the 3rd embodiment, be to be provided with two grid p-wires 21 and a data test line 23 in the surveyed area 2, can also further form the assembled scheme of second embodiment and the 4th embodiment, be to be provided with two grid p-wires 21 and two data test lines 23 in the surveyed area 2, expand technical scheme of the present invention to greatest extent.
Figure 10 is the process flow diagram of LCD (Liquid Crystal Display) array substrate wire break detection method first embodiment of the present invention, specifically comprises:
Wherein, described step 12 is specially: timing sequencer is to described displacement selector switch device input timing control signal, described displacement selector switch device is according to the described grid line of described timing control signal gating successively, gather the grid line signal from described grid line successively, and described timing control signal, described grid line signal are exported to checkout equipment.Described step 13 is specially: described checkout equipment judges according to described grid line signal whether described grid line breaks, and judges that according to described timing control signal broken string appears in which bar grid line.
Present embodiment is actually a kind of wire break detection method to Fig. 1 and LCD (Liquid Crystal Display) array substrate of the present invention shown in Figure 4, and the detailed process of burn out detection describes in detail in LCD (Liquid Crystal Display) array substrate first embodiment of the present invention and second embodiment.
Figure 11 is the process flow diagram of LCD (Liquid Crystal Display) array substrate wire break detection method second embodiment of the present invention, specifically comprises:
Wherein, described step 22 is specially: timing sequencer is to described displacement selector switch device input timing control signal, described displacement selector switch device is according to the described data line of described timing control signal gating successively, image data line signal from the described data line successively, and described timing control signal, described data line signal exported to checkout equipment.Described step 23 is specially: described checkout equipment judges according to described data line signal whether described data line breaks, and judges that according to described timing control signal broken string appears in which bar data line.
Present embodiment is actually a kind of wire break detection method to Fig. 5 and LCD (Liquid Crystal Display) array substrate of the present invention shown in Figure 8, and the detailed process of burn out detection describes in detail in LCD (Liquid Crystal Display) array substrate the 3rd embodiment of the present invention and the 4th embodiment.
Figure 12 is the process flow diagram of LCD (Liquid Crystal Display) array substrate wire break detection method the 3rd embodiment of the present invention, specifically comprises:
Wherein, described step 32 is specially: timing sequencer is to described displacement selector switch device input timing control signal, described displacement selector switch device is according to the described grid line of described timing control signal gating successively, gather the grid line signal from described grid line successively, and described timing control signal and described grid line signal are exported to checkout equipment; Described displacement selector switch device is according to the described data line of described timing control signal gating successively, image data line signal from the described data line successively, and described timing control signal and described data line signal exported to checkout equipment.Described step 33 is specially: described checkout equipment judges according to described grid line signal whether described grid line breaks, and judges that according to described timing control signal and grid line signal broken string appears in which bar grid line; Described checkout equipment judges according to described data line signal whether described data line breaks, and judges that according to described timing control signal and data line signal broken string appears in which bar data line.
Present embodiment is actually the assembled scheme of LCD (Liquid Crystal Display) array substrate wire break detection method first embodiment of the present invention and second embodiment, can expand technical scheme of the present invention to greatest extent.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (10)
1, a kind of LCD (Liquid Crystal Display) array substrate, comprise viewing area and the surveyed area that is positioned at periphery, described viewing area, be provided with grid line and data line in the described viewing area as signal wire, it is characterized in that, be provided with p-wire and displacement selector switch device in the described surveyed area, described p-wire is connected with an end of signal wire, and the other end of described signal wire connects described displacement selector switch device, and described displacement selector switch device is connected with the checkout equipment of judging the signal wire broken string.
2, LCD (Liquid Crystal Display) array substrate according to claim 1, it is characterized in that, described p-wire comprises a grid p-wire, described displacement selector switch device is a grid displacement selector switch device, a described grid p-wire is connected with an end of all grid lines, the other end of all grid lines connects described grid displacement selector switch device, and described grid displacement selector switch device is connected with the grid checkout equipment of judging the grid line broken string.
3, LCD (Liquid Crystal Display) array substrate according to claim 1, it is characterized in that, described p-wire comprises two grid p-wires, described displacement selector switch device is a grid displacement selector switch device, wherein a grid p-wire is connected with an end of all odd-numbered line grid lines, another grid p-wire is connected with an end of all even number line grid lines, the other end of all grid lines connects described grid displacement selector switch device, and described grid displacement selector switch device is connected with the grid checkout equipment of judging the grid line broken string.
4, according to the described LCD (Liquid Crystal Display) array substrate of arbitrary claim in the claim 1～3, it is characterized in that, described p-wire comprises a data test line, described displacement selector switch device is a data shift selector switch device, a described data test line is connected with an end of all data lines, the other end of all data lines connects described data shift selector switch device, and described data shift selector switch device is connected with the data-detection apparatus of judgment data line broken string.
5, according to the described LCD (Liquid Crystal Display) array substrate of arbitrary claim in the claim 1～3, it is characterized in that, described p-wire comprises two data test lines, described displacement selector switch device is a data shift selector switch device, wherein a data test line is connected with an end of all odd column data lines, another data test line is connected with an end of all even column data lines, the other end of all data lines connects described data shift selector switch device, and described data shift selector switch device is connected with the data-detection apparatus of judgment data line broken string.
6, according to the described LCD (Liquid Crystal Display) array substrate of arbitrary claim in the claim 1～3, it is characterized in that, described displacement selector switch device comprises control end, input end and output terminal, input end is connected with signal wire, output terminal is connected with described checkout equipment, and control end is connected with timing sequencer.
7, according to the described LCD (Liquid Crystal Display) array substrate of arbitrary claim in the claim 1～3, it is characterized in that, also be provided with between described viewing area and the surveyed area after detection is finished and cut off the cut-out line that is connected between p-wire and the signal wire.
8, a kind of wire break detection method of LCD (Liquid Crystal Display) array substrate is characterized in that, comprising:
Step 1, p-wire are to all grid lines and/or data line input load signal;
Step 2, displacement selector switch device be described grid line of gating and/or data line successively, to checkout equipment output grid line signal and/or data line signal;
Step 3, checkout equipment judge according to described grid line signal and/or data line signal whether described grid line and/or data line break.
9, the wire break detection method of LCD (Liquid Crystal Display) array substrate according to claim 8, it is characterized in that, described step 2 is specially: timing sequencer is to described displacement selector switch device input timing control signal, described displacement selector switch device is according to described grid line of described timing control signal gating successively and/or data line, gather grid line signal and/or data line signal from described grid line and/or data line successively, and described timing control signal, described grid line signal and/or data line signal are exported to checkout equipment.
10, the wire break detection method of LCD (Liquid Crystal Display) array substrate according to claim 8, it is characterized in that, described step 3 is specially: described checkout equipment judges according to described grid line signal and/or data line signal whether described grid line and/or data line break, and judges that according to described timing control signal broken string appears in which bar grid line and/or data line.
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