CN108267668A - The localization method and device of short dot in display panel - Google Patents
The localization method and device of short dot in display panel Download PDFInfo
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- CN108267668A CN108267668A CN201810118026.4A CN201810118026A CN108267668A CN 108267668 A CN108267668 A CN 108267668A CN 201810118026 A CN201810118026 A CN 201810118026A CN 108267668 A CN108267668 A CN 108267668A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The invention discloses the localization methods and device of short dot in a kind of display panel, belong to display technology field.This method includes：One group of pixel unit to be detected is determined in display panel, one group of pixel unit to be detected includes pixel unit of the uniformity less than uniformity threshold value of multiple display brightness, then multiple object pixel units are determined in one group of pixel unit to be detected, and the pixel unit for determining to connect with short dot in one group of pixel unit according to the driving voltage of determining each object pixel unit, so that it is determined that in display panel short dot position.Localization method provided in an embodiment of the present invention, can directly determine the position of short dot in display panel according to driving voltage, and efficiency is higher.
Description
Technical field
The present invention relates to the localization methods and device of short dot in display technology field more particularly to a kind of display panel.
Background technology
A plurality of gate line and a plurality of data signal line are generally set in display panel, which is used for
Gate drive signal is provided for each row pixel unit in display panel, which is used for as in display panel
Each row pixel unit provides data-signal.Go out when between the public electrode in gate line or data signal line and display panel
During existing short circuit, display panel is it is possible that display is abnormal.Wherein, the short circuit between the gate line and public electrode is general
Referred to as GCS (Gate Common Short), the short circuit between the data signal line and public electrode is commonly referred to as DCS (Data
Common Short)。
In the relevant technologies, in order in time repair display panel, need to determine the position of signal wire short dot
Position.At the position for positioning the short dot, each pixel unit in display panel can be first lighted, by observing each pixel
The brightness of unit, by the data signal line corresponding to the non-uniform row pixel unit (or one-row pixels unit) of display brightness
(or gate line) is determined as short-circuit signal line.Later, the power supply of display panel can be cut off, and short from this using cutting machine
The end of road signal wire starts to cut the short-circuit signal line paragraph by paragraph.Wherein, often cutting is primary, needs to light display again
Each pixel unit of panel, and observe the aobvious of the row pixel unit (or one-row pixels unit) that the short-circuit signal line is connected
Show whether brightness is uniform, if display brightness is uniform, can determine to cut the part of short dot on the short-circuit signal line
Fall, and can determine that the short dot is located on the last line segment cut away；Continue if display brightness is uneven
Cutting, until the display brightness of a row pixel unit (or one-row pixels unit) that the short-circuit signal line is connected is uniform.
But when the area of display panel is larger, it may be necessary to which repeatedly cutting and light action can just determine
The position of short dot, the localization method of the short dot more takes, less efficient.
Invention content
The present invention provides the localization methods and device of short dot in a kind of display panel, can solve short in the relevant technologies
The localization method of waypoint more take, it is less efficient the problem of.The technical solution is as follows：
In a first aspect, a kind of localization method of short dot in display panel is provided, the method includes：
One group of pixel unit to be detected is determined in the display panel, one group of pixel unit to be detected includes
Multiple pixel units, the uniformity of the display brightness of the multiple pixel unit are less than uniformity threshold value；
Multiple object pixel units are determined in one group of pixel unit to be detected；
Determine the driving voltage of each object pixel unit；
According to the driving voltage of each object pixel unit, determine to connect with short dot in one group of pixel unit
Pixel unit.
Optionally, the driving voltage according to each object pixel unit, determines in one group of pixel unit
The pixel unit being connect with short dot, including：
According to the driving voltage of each object pixel unit, determine in the multiple pixel unit, driving voltage is not
More than the pixel unit of voltage threshold；
Pixel unit of the driving voltage no more than voltage threshold is determined as the pixel list being connect with the short dot
Member.
Optionally, the multiple object pixel unit includes：Multiple first object pixel units and multiple second targets
Pixel unit, the display brightness of the multiple first object pixel unit reduce successively, the multiple second object pixel unit
Display brightness increase successively；
The driving voltage according to each object pixel unit determines in the multiple pixel unit that driving is electric
Pressure is not more than the pixel unit of voltage threshold, including：
According to each first object pixel unit the location of in one group of pixel unit to be detected, with
And the driving voltage of each first object pixel unit, it determines to be used to indicate between driving voltage and pixel unit position and close
The first voltage change curve of system；
According to each second object pixel unit the location of in one group of pixel unit to be detected, with
And the driving voltage of each second object pixel unit, it determines to be used to indicate between driving voltage and pixel unit position and close
The second voltage change curve of system；
Pixel unit indicated by the intersection point of the first voltage change curve and the second voltage change curve is true
It is set to the pixel unit of the short dot connection.
Optionally, the multiple object pixel unit includes：Multiple first object pixel units and multiple second targets
Pixel unit, the display brightness of the multiple first object pixel unit reduce successively, the multiple second object pixel unit
Display brightness increase successively；
The driving voltage according to each object pixel unit determines in the multiple pixel unit that driving is electric
Pressure is not more than the pixel unit of voltage threshold, including：
It is the location of in one group of pixel unit to be detected and every according to each object pixel unit
The driving voltage of a object pixel unit determines to be used to indicate the third of relationship between driving voltage and pixel unit position
Voltage change curve；
The minimum a little indicated pixel unit of driving voltage on the tertiary voltage change curve is determined as described
The pixel unit that short dot is connected.
Optionally, the driving voltage for determining each object pixel unit, including：
The liquid crystal deflection angle of each object pixel unit of detection；
The liquid crystal deflection angle of each object pixel unit detected is converted into driving voltage, the driving voltage
With liquid crystal deflection angle positive correlation.
Optionally, the driving voltage for determining each object pixel unit, including：
The grayscale value of each object pixel unit of detection；
The grayscale value of each object pixel unit detected is converted into driving voltage, the driving voltage and institute
State grayscale value positive correlation.
Second aspect, provides a kind of positioning device of short dot in display panel, and described device includes：
First determining module, it is described to be detected for determining one group of pixel unit to be detected in the display panel
One group of pixel unit include multiple pixel units, the uniformity of the display brightness of the multiple pixel unit is less than uniformity threshold
Value；
Second determining module, for determining multiple object pixel units in one group of pixel unit to be detected；
Third determining module, for determining the driving voltage of each object pixel unit；
4th determining module for the driving voltage according to each object pixel unit, determines one group of pixel
The pixel unit being connect in unit with short dot.
Optionally, the 4th determining module, is used for：
According to the driving voltage of each object pixel unit, determine in the multiple pixel unit, driving voltage is not
More than the pixel unit of voltage threshold；
Pixel unit of the driving voltage no more than voltage threshold is determined as the pixel list being connect with the short dot
Member.
Optionally, the multiple object pixel unit includes：Multiple first object pixel units and multiple second targets
Pixel unit, the display brightness of the multiple first object pixel unit reduce successively, the multiple second object pixel unit
Display brightness increase successively；
4th determining module, is used for：
According to each first object pixel unit the location of in one group of pixel unit to be detected, with
And the driving voltage of each first object pixel unit, it determines to be used to indicate between driving voltage and pixel unit position and close
The first voltage change curve of system；
According to each second object pixel unit the location of in one group of pixel unit to be detected, with
And the driving voltage of each second object pixel unit, it determines to be used to indicate between driving voltage and pixel unit position and close
The second voltage change curve of system；
Pixel unit indicated by the intersection point of the first voltage change curve and the second voltage change curve is true
It is set to the pixel unit of the short dot connection.
Optionally, the multiple object pixel unit includes：Multiple first object pixel units and multiple second targets
Pixel unit, the display brightness of the multiple first object pixel unit reduce successively, the multiple second object pixel unit
Display brightness increase successively；
4th determining module, is used for：
It is the location of in one group of pixel unit to be detected and every according to each object pixel unit
The driving voltage of a object pixel unit determines to be used to indicate the third of relationship between driving voltage and pixel unit position
Voltage change curve；
The minimum a little indicated pixel unit of driving voltage on the tertiary voltage change curve is determined as described
The pixel unit that short dot is connected.
The third aspect provides a kind of computer readable storage medium, and the storage medium memory contains computer program,
The localization method of short dot in the display panel described in first aspect is realized when the computer program is executed by processor.
The advantageous effect that technical solution provided by the invention is brought is：
In conclusion in display panel provided by the invention short dot localization method and device, this method can be aobvious
Show and one group of pixel unit to be detected determined in panel, and multiple object pixel units are determined in one group of pixel unit,
It then can be according to the driving voltage of determining each object pixel unit, to determine to connect with short dot in one group of pixel unit
Pixel unit.Since localization method provided in an embodiment of the present invention can be according to the driving electricity of the pixel unit of display panel
Pressure, to determine the position for the pixel unit being connect with short dot, so as to go out short dot according to the location determination of the pixel unit
Position, therefore relative to the piecewise patterning method in the relevant technologies, this method need not carry out repeating cutting and light action, efficiency
It is higher.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the flow chart of the localization method of short dot in a kind of display panel provided in an embodiment of the present invention；
Fig. 2 is the flow chart of the localization method of short dot in another display panel provided in an embodiment of the present invention；
Schematic diagram when Fig. 3 is a kind of display panel normal work provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram when signal wire in a kind of display panel provided in an embodiment of the present invention occurs short-circuit；
Fig. 5 is the schematic diagram when signal wire in another display panel provided in an embodiment of the present invention occurs short-circuit；
Fig. 6 is the schematic diagram when signal wire in another display panel provided in an embodiment of the present invention occurs short-circuit；
Fig. 7 is in a kind of determining multiple pixel units provided in an embodiment of the present invention, and driving voltage is not more than voltage threshold
Pixel unit method flow diagram；
Fig. 8 is a kind of schematic diagram of voltage change curve provided in an embodiment of the present invention；
Fig. 9 is in another determining multiple pixel units provided in an embodiment of the present invention, and driving voltage is not more than voltage threshold
The flow chart of the method for the pixel unit of value；
Figure 10 is the schematic diagram of another voltage change curve provided in an embodiment of the present invention；
Figure 11 is a kind of block diagram of positioning device provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
In the manufacturing process of display panel, in order to ensure the yield of display panel, before display panel manufacture, elder generation is needed
Lighting test is carried out to display panel, it is whether qualified to detect display panel.When lighting each pixel unit in display panel
Afterwards, if observing, the display brightness of each pixel unit of the display panel is uniform, can determine display panel qualification；If it sees
It observes in the display panel when there is the transition line of brightness irregularities, then can determine that certain signal line in the display panel can
Short circuit can occur with public electrode.At this point it is possible to the position of short dot on the signal wire of generation short circuit is detected, so as to
The display panel is repaired in time.
An embodiment of the present invention provides a kind of localization method of short dot in display panel, this method is based on display panel
The driving voltage of pixel unit and the distance between the pixel unit and short dot positive correlation this characteristic, to determine display
The position of short dot in panel, relative to the piecewise patterning method in the relevant technologies, this method need not be carried out repeating cutting and be lighted
Action, efficiency are higher.
Fig. 1 is the flow chart of the localization method of short dot in a kind of display panel provided in an embodiment of the present invention, Ke Yiying
For in display panel, as shown in Figure 1, this method can include：
Step 101 determines one group of pixel unit to be detected in display panel.
One group of pixel unit to be detected can be a line or a row pixel unit in display panel, one group of picture
The uniformity of the display brightness of multiple pixel units that plain unit includes is less than uniformity threshold value.
Wherein, which can refer to the sub-pixel (also referred to as sub-pix) in display panel, in practical application, show
Show that panel can include multiple pixels of array arrangement, each pixel can include the pixel unit of multiple and different colors, such as
Each pixel can include red pixel cell, green pixel cell and blue pixel cells.The uniformity of display brightness can be with
Refer to the uniformity coefficient of display brightness, such as can refer to the variance, very poor or flat of the display brightness of multiple pixel unit
Inequality.The uniformity threshold value can be predetermined according to the requirement of the properties of product of display panel.
Step 102 determines multiple object pixel units in one group of pixel unit to be detected.
In embodiments of the present invention, can be in one group of pixel unit to be detected, the uniformity of display brightness is poor
Position at choose multiple object pixel units；Alternatively, it can also uniformly be chosen in one group of pixel unit to be detected more
A object pixel unit, such as in one group of pixel unit an object pixel can be determined every several pixel units
Unit；Or can also each pixel unit included by one group of pixel unit be directly determined as object pixel list
Member.
Step 103, the driving voltage for determining each object pixel unit.
In embodiments of the present invention, when display panel is liquid crystal display panel (Liquid Crystal Display, LCD)
When, the liquid crystal deflection angle of each object pixel unit, and the liquid that the measurement is obtained can be measured by deflection angle detecting instrument
Brilliant deflection angle is converted to the driving voltage of the object pixel unit, the driving voltage and the liquid crystal deflection angle positive correlation；When this is aobvious
When showing panel for Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) panel, fluorescence can be passed through
Detecting instrument measures the fluorescent value of each object pixel unit, and the fluorescent value that the measurement is obtained is converted to the object pixel list
The driving voltage of member, the driving voltage and the fluorescent value positive correlation.
Step 104, the driving voltage according to each object pixel unit determine to connect with short dot in one group of pixel unit
Pixel unit.
After the driving voltage for determining each object pixel unit, each object pixel unit can be based in one group of picture
The location of in plain unit, by way of linear fit, determine in one group of pixel unit, the drive of each pixel unit
Dynamic voltage and the relationship of pixel unit present position, and then pixel unit of the driving voltage no more than voltage threshold can be determined
For the pixel unit being connect with the short dot；Alternatively, can also be directly by multiple object pixel unit, driving voltage is minimum
Object pixel unit be determined as the pixel unit being connect with the short dot.Further, according to detect and short dot connect
The position of the pixel unit connect, you can determine the specific location of the short dot in the display panel.
It, can since localization method provided in an embodiment of the present invention can determine the pixel unit being connect with short dot
The short dot on short-circuit signal line is located in the length range of 1 pixel unit, the positioning accuracy is higher.Further
, optical viewer can be continued through and observed in the length range, so as to be accurately positioned out short dot in display panel
Specific location.
In conclusion an embodiment of the present invention provides a kind of localization method of short dot in display panel, this method can be with
One group of pixel unit to be detected is determined in display panel, and multiple object pixel lists are determined in one group of pixel unit
Member, then can according to the driving voltage of determining each object pixel unit, come determine in one group of pixel unit with short dot
The pixel unit of connection.Since localization method provided in an embodiment of the present invention can be according to the driving of the pixel unit of display panel
Voltage, to determine the position for the pixel unit being connect with short dot, so as to go out short dot according to the location determination of the pixel unit
Position, therefore relative to the piecewise patterning method in the relevant technologies, this method need not carry out repeating cutting and light action, effect
Rate is higher.
Fig. 2 is the flow chart of the localization method of short dot in another display panel provided in an embodiment of the present invention, such as Fig. 2
Shown, this method can include：
Step 201 lights each pixel unit in display panel.
In embodiments of the present invention, can display panel manufacture before, to display panel carry out lighting test, that is to say for
Each pixel unit in display panel provides driving voltage, each pixel unit to be driven to shine；And then it is aobvious to observe this
Show whether each pixel unit in panel can work normally.
When display panel works normally, as shown in figure 3, the resistance of the equivalent resistance of each pixel unit in display panel
It is worth equal, additional driving voltage V can be evenly distributed on each pixel unit in one group of pixel unit.For example, it is assumed that Fig. 3
In shown display panel, each row pixel unit includes n (n is the integer more than 1) a pixel unit, then at this point, each row
The driving voltage loaded on n pixel unit in pixel unit should be equal.Assuming that i-th in a wherein row pixel unit
The driving voltage loaded on pixel unit is Vi, then the driving voltage loaded on each pixel unit in the row pixel unit should
Work as satisfaction：V1=V2=...=Vi=...=Vn, so as to ensure that the equal of the display brightness of each pixel unit of display panel
One property.
And as shown in figure 4, when there is short dot 10 in certain data signal wire 02 in the display panel, the number of the short circuit
It may change according to the equivalent resistance of each pixel unit connected on signal wire 02, so as to cause the data of the short circuit
In the row pixel unit that signal wire 02 is connected, the driving voltage of each pixel unit actual loaded changes, at this point, should
The driving voltage loaded on n pixel unit in row pixel unit may be not completely equivalent, and connect with the short dot 10
The driving voltage Vs loaded on pixel unit differs greatly, therefore the short circuit with the driving voltage that is loaded on other pixel units
The display brightness of the pixel unit of 10 connection of point is the most abnormal.
If as shown in figure 5, when there is short dot 11 in certain gate line 01 in the display panel, the grid of the short circuit
The equivalent resistance of each pixel unit connected on pole signal wire 01 may change, so as to cause the grid of the short circuit
In the one-row pixels unit that signal wire 01 is connected, the driving voltage of each pixel unit actual loaded changes, at this point, should
The driving voltage loaded on m pixel unit in row pixel unit may be not completely equivalent, that is to say V1' in Fig. 5,
V2' ... Vm' are not completely equivalent, and on the driving voltage Vs' for the pixel unit being connect with the short dot 11 and other pixel units
The driving voltage of loading differs greatly, therefore the display brightness of the pixel unit of the short dot 11 connection is the most abnormal.
Step 202 determines one group of pixel unit to be detected in display panel.
One group of pixel unit to be detected can be a line or a row pixel unit in display panel, one group of picture
The uniformity of the display brightness of multiple pixel units that plain unit includes is less than uniformity threshold value.The uniformity of the display brightness can
To refer to the uniformity coefficient of display brightness, for example, can refer to the display brightness of multiple pixel unit variance, it is very poor or
Mean difference.The uniformity threshold value can be predetermined according to the requirement of the properties of product of display panel.
It in embodiments of the present invention, can be by the display of each pixel unit in testing staff's eye-observation display panel
The uniformity coefficient of brightness, and the poor pixel unit a group by a group of display brightness homogeneity in the display panel can be determined as
One group of pixel unit to be detected；Alternatively, each pixel unit in the display panel can also be detected by brightness detection instrument device
Display brightness, and according to the display brightness of each pixel unit, calculate the uniformity of the display brightness of each group of pixel unit,
And multiple pixel units that the uniformity of the display brightness can be less than to uniformity threshold value are determined as one group of pixel to be detected
Unit.
It should be noted that in embodiments of the present invention, with reference to figure 3, the signal wire in display panel, which generally comprises, to be used for
The a plurality of gate line 01 of gate drive signal is provided for each row pixel unit and for providing data for each row pixel unit
The a plurality of data signal line 02 of signal.And as shown in figure 4, when between the data signal line 02 and public electrode occur short circuit when,
The uniformity of the display brightness of a row pixel unit being connect with the data signal line 02 can change, therefore when detecting,
The one row pixel unit can be determined as to one group of pixel unit to be detected；When between the gate line 01 and public electrode
When short circuit occurs, as shown in figure 5, the uniformity for the display brightness of one-row pixels unit being connect with the gate line 01 occurs
Variation, therefore when detecting, which can be determined as to one group of pixel unit to be detected.
Step 203 determines multiple object pixel units in one group of pixel unit to be detected.
In embodiments of the present invention, can be in one group of pixel unit to be detected, the uniformity of display brightness is poor
Position at choose multiple object pixel units；Alternatively, it can also uniformly be chosen in one group of pixel unit to be detected more
A object pixel unit, such as in one group of pixel unit an object pixel can be determined every several pixel units
Unit；Or can also each pixel unit included by one group of pixel unit be directly determined as object pixel list
Member.
Exemplary, Fig. 6 is the partial structural diagram of display panel shown in Fig. 4, as shown in fig. 6, can be to be checked from this
In the row pixel unit surveyed, N number of object pixel unit, and N number of mesh are chosen at the poor position of the uniformity of display brightness
The display brightness of mark pixel unit can reduce, then increase successively successively.
Step 204, the driving voltage for determining each object pixel unit.
In embodiments of the present invention, various ways may be used to determine the driving voltage of each object pixel unit, this
Inventive embodiments are schematically illustrated by taking following several ways as an example：
In an optional implementation manner, the method for the driving voltage for determining each object pixel unit can wrap
It includes：
Step A1, the liquid crystal deflection angle of each object pixel unit is detected.
When display panel is LCD display panel, each object pixel unit can be measured by angle measuring instrument
Liquid crystal deflection angle, specific measuring principle can refer to the relevant technologies, and the embodiment of the present invention repeats no more this.
Step A2, the liquid crystal deflection angle of each object pixel unit detected is converted into driving voltage.
It further, can be according to preset driving voltage transformational relation, by each object pixel unit detected
Liquid crystal deflection angle is converted to driving voltage, which is positively correlated with the liquid crystal deflection angle.The variation model of the driving voltage
It generally can be -7 volts of (V)~7V to enclose.
In another optional realization method, which can wrap
It includes：
Step B1, the grayscale value of each object pixel unit is detected.
When display panel is LCD display panel or OLED display panel, can be surveyed by grayscale value measuring instrument
The grayscale value of each object pixel unit is measured, which can be the bright road device of grayscale, specific measuring principle
The relevant technologies can be referred to, the embodiment of the present invention repeats no more this.
Step B2, the grayscale value of each object pixel unit detected is converted into driving voltage.
It further, can be according to preset driving voltage transformational relation, by each object pixel unit detected
Grayscale value is converted to driving voltage, which is positively correlated with grayscale value.
Optionally, the grayscale value detected can also be first converted to liquid crystal deflection angle, then the liquid crystal deflection angle is converted
For driving voltage, which is positively correlated with the liquid crystal deflection angle.
In another optional realization method, which can wrap
It includes：
Step C1, the fluorescent value of each object pixel unit is detected.
When the display panel is OLED display panel, can also each object pixel list be measured by fluorescence measurement instrument
The fluorescent value of member, specific measuring principle can refer to the relevant technologies, and the embodiment of the present invention repeats no more this.
Step C2, the fluorescent value of each object pixel unit detected is converted into driving voltage.
It further, can be according to preset driving voltage transformational relation, by each object pixel unit detected
Fluorescent value is converted to driving voltage, which is positively correlated with fluorescent value.
Step 205, the driving voltage according to each object pixel unit, determine in multiple pixel units, driving voltage is not
More than the pixel unit of voltage threshold.
Wherein, which can be the driving voltage of each object pixel unit in display panel, calculate
The minimum driving voltage of multiple pixel units included by one group of pixel unit gone out.
In embodiments of the present invention, identified N number of object pixel unit can include in above-mentioned steps 203：It is multiple
First object pixel unit and multiple second object pixel units.As shown in fig. 6, N number of object pixel unit can include
N1 first object pixel unit and N2 the second object pixel units, and the display brightness of the N1 first object pixel unit
It can reduce successively, the display brightness of the N2 the second object pixel units can increase successively.It that is to say, determining display surface
, can be in one group of pixel unit in plate after one group of pixel unit of brightness irregularities, brightness is determined by bright dimmed one section
Multiple first object pixel units, and in one group of pixel unit, brightness determines multiple second targets by one section secretly brightened
Pixel unit, wherein, N1 and N2 can be the positive integer more than 1.
In an optional implementation manner, as shown in fig. 7, this determines in multiple pixel units that driving voltage is not more than
The method of the pixel unit of voltage threshold can include：
Step 2051A, according to each first object pixel unit the location of in one group of pixel unit to be detected,
And the driving voltage of each first object pixel unit, it determines to be used to indicate relationship between driving voltage and pixel unit position
First voltage change curve.
In embodiments of the present invention, as shown in Figure 6, it is assumed that N1 first is had chosen in one group of pixel unit to be detected
Object pixel unit, the driving voltage of the N1 first object pixel unit is respectively y1、y2……yN1, the N1 first object
The location of pixel unit is respectively x1、x2……xN1.Wherein, the location of each first object pixel unit can be
With in one group of pixel unit to be detected, the pixel unit close to signal input part is starting point (i.e. origin), with pixel list
What the number of member was determined for linear module.For example, the location of i-th first object pixel unit xiCan refer to this i-th
A first object pixel unit is the xth in one group of pixel unit to be detectediA pixel unit.
Further, you can residing for the driving voltage and the object pixel unit to each first object pixel unit
Position carries out linear fit, obtains first voltage change curve：Y1=a1+b1x.
Wherein, a1 can meet：
B1 can meet：
yiFor the driving voltage value of i-th of first object pixel unit in the N1 first object pixel unit, xiIt is N1
The location of i-th first object pixel unit in first object pixel unit, and i is the positive integer no more than N1.
Exemplary, first voltage change curve y1 can be with as shown in figure 8, where first voltage change curve y1
In coordinate system, horizontal axis coordinate can be used to indicate that the location of each pixel unit in one group of pixel unit to be detected, indulge
Axial coordinate can be used to indicate that the driving voltage of each pixel unit in one group of pixel unit to be detected, and the starting of the horizontal axis
Point (i.e. origin) can be one group of pixel unit to be detected in, close to signal input part pixel unit, therefore this close to letter
The coordinate of the position of the pixel unit of number input terminal is 0 (the 0th pixel unit i.e. in one group of pixel unit to be detected),
The linear module of the horizontal axis can be the number of pixel unit, from figure 8, it is seen that can be wrapped altogether in one group of pixel unit
Include n1 pixel unit.
Step 2052A, according to each second object pixel unit the location of in one group of pixel unit to be detected,
And the driving voltage of each second object pixel unit, it determines to be used to indicate relationship between driving voltage and pixel unit position
Second voltage change curve.
In embodiments of the present invention, as shown in Figure 6, it is assumed that N2 second is had chosen in one group of pixel unit to be detected
Object pixel unit, the driving voltage of the N2 the second object pixel units is respectively y1、y2……yN2, the N2 the second targets
The location of pixel unit is respectively x1、x2……xN2.Wherein, the location of each second object pixel unit can also
It is so that in one group of pixel unit to be detected, the pixel unit close to signal input part is starting point (i.e. origin), with pixel
What the number of unit was determined for linear module.For example, the location of j-th second object pixel units xjCan refer to this
J the second object pixel units are the xth in one group of pixel unit to be detectedjA pixel unit.
Further, you can residing for the driving voltage and the object pixel unit to each second object pixel unit
Position carries out linear fit, obtains second voltage change curve：Y2=a2+b2x.
Wherein, a2 can meet：
B2 can meet：
yjFor the driving voltage value of j-th of second object pixel units in the N2 the second object pixel units, xjIt is N2
The location of j-th second object pixel units in second object pixel unit, and j is the positive integer no more than N2.And such as
Shown in Fig. 8, the second voltage change curve y2 and first voltage change curve y1 may be in same coordinate system.
Step 2053A, by the pixel unit indicated by the intersection point of first voltage change curve and second voltage change curve
It is determined as the pixel unit being connect with short dot.
It is exemplary, as shown in Figure 8, it is assumed that according to first voltage change curve y1 and second voltage change curve y2, calculate
The abscissa of obtained intersection point be K, then the k-th pixel unit in a row pixel unit to be detected can be determined as with
The pixel unit of short dot connection.
In another optional realization method, as shown in figure 9, this determines in multiple pixel units that driving voltage is little
It can include in the method for the pixel unit of voltage threshold：
Step 2051B, according to each object pixel unit the location of in one group of pixel unit to be detected and
The driving voltage of each object pixel unit determines to be used to indicate the third electricity of relationship between driving voltage and pixel unit position
Press change curve.
In embodiments of the present invention, it can be chosen in one group of pixel unit to be detected and include multiple object pixel units
One group of object pixel unit, and the display brightness of one group of object pixel unit can reduce successively, then increase successively.Assuming that
One group of object pixel unit of the selection includes N3 object pixel unit, and the driving voltage of the N3 object pixel unit is distinguished
For y1、y2……yN3, the location of each object pixel unit which includes is respectively x1、
x2……xN3, then the driving voltage of each pixel unit in the N3 object pixel unit and location can be carried out
Linear fit obtains tertiary voltage change curve y3, which may be parabola, it is also possible to
It is by the lines of the rectilinear(-al) of at least two Different Slopes.
Exemplary, obtained tertiary voltage change curve y3 can be as shown in Figure 10, in tertiary voltage change curve y3
In the coordinate system at place, horizontal axis coordinate can be used to indicate that the position residing for each pixel unit in one group of pixel unit to be detected
It puts, ordinate of orthogonal axes can be used to indicate that the driving voltage of each pixel unit in one group of pixel unit to be detected, and the horizontal axis
Starting point can be in one group of pixel unit to be detected, close to the pixel unit of signal input part, therefore this is close to signal
The coordinate of the position of the pixel unit of input terminal is 0 (the 0th pixel unit i.e. in one group of pixel unit to be detected), should
The linear module of horizontal axis can be the number of pixel unit, from fig. 10 it can be seen that can be wrapped altogether in one group of pixel unit
Include n2 pixel unit.
Step 2052B, the minimum a little indicated pixel unit of driving voltage on tertiary voltage change curve is determined
For the pixel unit being connect with short dot.
It, can will be indicated by the vertex of the tertiary voltage change curve when the tertiary voltage change curve is parabola
Pixel unit (i.e. the corresponding pixel unit of abscissa value on the vertex) is determined as the pixel unit being connect with short dot；When this
It, can be by least the one of the tertiary voltage change curve when tertiary voltage change curve includes the straight line of at least two Different Slopes
In a inflection point, the pixel unit (i.e. the corresponding pixel unit of abscissa value of the inflection point) indicated by the inflection point of ordinate value minimum
It is determined as the pixel unit being connect with short dot.
It is exemplary, it is assumed that obtained tertiary voltage change curve is the straight line group shown in Fig. 10 for including four Different Slopes
Into lines y3, and the abscissa that the inflection point of the lines y3 ordinate value minimums of four Different Slopes composition is calculated is
The K1 pixel unit in the one-row pixels unit to be detected can be then determined as the pixel list being connect with short dot by K1
Member.
Step 206, the position for determining short dot in display panel.
In embodiments of the present invention, the driving voltage obtained in step 205 can be directly not more than to the picture of voltage threshold
Plain unit is determined as the pixel unit being connect with short dot, further, according to the pixel list being connect with short dot detected
The position of member, you can determine the specific location of the short dot in the display panel.
It, can since localization method provided in an embodiment of the present invention can determine the pixel unit being connect with short dot
The short dot on short-circuit signal line is located in the length range of 1 pixel unit, the positioning accuracy is higher.Further
, optical viewer can be continued through and observed in the length range, so as to be accurately positioned out short dot in display panel
Specific location；Or when short dot is invisible, the raising of the precision is also provided subsequently to search the position of the short dot
Information.
It should be noted that in embodiments of the present invention, can one only be carried out to each pixel unit in display panel
Secondary lighting test that is to say once, to determine one group of pixel unit to be detected, then step 201 needs to perform, you can
To perform the position that step 202 detects short dot to 206, therefore the short dot in display panel provided in an embodiment of the present invention
Localization method, do not need to occupy lighting-up equipment, ensure that the mobility of equipment.
It should also be noted that, in above-mentioned display panel provided in an embodiment of the present invention the step of the localization method of short dot
Sequencing can suitably be adjusted, step according to circumstances can also accordingly be increased and decreased.It is any to be familiar with the art
Technical staff in the technical scope disclosed by the present invention, the method that variation can be readily occurred in, should all cover the present invention guarantor
Within the scope of shield, therefore repeat no more.
In conclusion an embodiment of the present invention provides a kind of localization method of short dot in display panel, this method can be with
One group of pixel unit to be detected is determined in display panel, and multiple object pixel lists are determined in one group of pixel unit
Member, then can according to the driving voltage of determining each object pixel unit, come determine in one group of pixel unit with short dot
The pixel unit of connection.Since localization method provided in an embodiment of the present invention can be according to the pixel unit of determining display panel
Driving voltage, it is true so as to the position according to the pixel unit to determine the position for the pixel unit being connect with short dot
The position of short dot is made, therefore relative to the piecewise patterning method in the relevant technologies, this method need not carry out repeating cutting and point
Bright action, efficiency are higher.
Figure 11 is the block diagram of the positioning device 30 of short dot in a kind of display panel provided in an embodiment of the present invention, such as Figure 11
Shown, which can include：
First determining module 301, for determining one group of pixel unit to be detected in display panel.
One group of pixel unit to be detected include multiple pixel units, the display brightness of multiple pixel unit it is uniform
Degree is less than uniformity threshold value.
Second determining module 302, for determining multiple object pixel units in one group of pixel unit to be detected.
Third determining module 303, for determining the driving voltage of each object pixel unit.
4th determining module 304 for the driving voltage according to each object pixel unit, is determined in one group of pixel unit
The pixel unit being connect with short dot.
In conclusion an embodiment of the present invention provides a kind of positioning device of short dot in display panel, which includes
First determining module, the second determining module, third determining module and the 4th determining module.First determining module can be aobvious
Show and one group of pixel unit to be detected is determined in panel, which can be in one group of pixel unit to be detected
Determine multiple object pixel units, each object pixel list that the 4th determining module can be determined according to the third determining module
The driving voltage of member, to determine the pixel unit being connect in one group of pixel unit with short dot.Since the embodiment of the present invention provides
Positioning device can the position of pixel unit that is connect with short dot be determined according to determining driving voltage, so as to root
Go out the position of short dot according to the location determination of the pixel unit, without carrying out repeating cutting and lighting action, efficiency is higher.
In embodiments of the present invention, the 4th determining module 304 can be used for the driving according to each object pixel unit
Voltage determines in multiple pixel units that driving voltage is not more than the pixel unit of voltage threshold, and by driving voltage no more than electricity
The pixel unit of pressure threshold value is determined as the pixel unit being connect with short dot.
Optionally, which can include：Multiple first object pixel units and multiple
Second object pixel unit, the display brightness of multiple first object pixel units reduce successively, multiple second object pixel units
Display brightness increase successively.
Correspondingly, the 4th determining module 304 can be used for：
According to each first object pixel unit the location of in one group of pixel unit to be detected and each the
The driving voltage of one object pixel unit determines to be used to indicate the first voltage of relationship between driving voltage and pixel unit position
Change curve.
According to each second object pixel unit the location of in one group of pixel unit to be detected and each the
The driving voltage of two object pixel units determines to be used to indicate the second voltage of relationship between driving voltage and pixel unit position
Change curve.
Pixel unit indicated by the intersection point of first voltage change curve and second voltage change curve is determined as short circuit
The pixel unit of point connection.
Optionally, the 4th determining module 304 can be used for：
According to each object pixel unit the location of in one group of pixel unit to be detected and each target picture
The driving voltage of plain unit determines that the tertiary voltage variation for being used to indicate relationship between driving voltage and pixel unit position is bent
Line.
The minimum a little indicated pixel unit of driving voltage on tertiary voltage change curve is determined as short dot institute
The pixel unit of connection.
Optionally, in embodiments of the present invention, which can be used for detecting each object pixel unit
Liquid crystal deflection angle, and the liquid crystal deflection angle of each object pixel unit detected is converted into driving voltage, driving electricity
Pressure and the positive correlation of liquid crystal deflection angle.
Alternatively, the third determining module 303 can be used for detecting the grayscale value of each object pixel unit, and will detect
The grayscale value of each object pixel unit be converted to driving voltage, the driving voltage and grayscale value positive correlation.
In conclusion an embodiment of the present invention provides a kind of positioning device of short dot in display panel, which includes
First determining module, the second determining module, third determining module and the 4th determining module.First determining module can be aobvious
Show and one group of pixel unit to be detected is determined in panel, which can be in one group of pixel unit to be detected
Determine multiple object pixel units, each object pixel list that the 4th determining module can be determined according to the third determining module
The driving voltage of member, to determine the pixel unit being connect in one group of pixel unit with short dot.Since the embodiment of the present invention provides
Positioning device can the position of pixel unit that is connect with short dot be determined according to determining driving voltage, so as to root
Go out the position of short dot according to the location determination of the pixel unit, without carrying out repeating cutting and lighting action, efficiency is higher.
About the positioning device of short dot in the display panel in above-described embodiment, wherein modules perform the tool of operation
Body mode is described in detail in the embodiment in relation to this method, and explanation will be not set forth in detail herein.
An embodiment of the present invention provides a kind of computer readable storage medium, which contains computer journey
Sequence can realize determining for short dot in above-mentioned display panel as shown in Figure 1 or 2 when the computer program is executed by processor
Position method, and can realize that Fig. 7 or shown in Fig. 9 such as is determined in multiple pixel units, driving voltage is no more than voltage threshold
The method of pixel unit.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of localization method of short dot in display panel, which is characterized in that the method includes：
One group of pixel unit to be detected is determined in the display panel, one group of pixel unit to be detected includes multiple
Pixel unit, the uniformity of the display brightness of the multiple pixel unit are less than uniformity threshold value；
Multiple object pixel units are determined in one group of pixel unit to be detected；
Determine the driving voltage of each object pixel unit；
According to the driving voltage of each object pixel unit, the picture being connect in one group of pixel unit with short dot is determined
Plain unit.
2. localization method according to claim 1, which is characterized in that the drive according to each object pixel unit
Dynamic voltage, determines the pixel unit being connect in one group of pixel unit with short dot, including：
According to the driving voltage of each object pixel unit, determine in the multiple pixel unit, driving voltage is not more than
The pixel unit of voltage threshold；
Pixel unit of the driving voltage no more than voltage threshold is determined as the pixel unit being connect with the short dot.
3. localization method according to claim 2, which is characterized in that the multiple object pixel unit includes：Multiple
One object pixel unit and multiple second object pixel units, the display brightness of the multiple first object pixel unit according to
Secondary reduction, the display brightness of the multiple second object pixel unit increase successively；
The driving voltage according to each object pixel unit is determined in the multiple pixel unit, driving voltage is not
More than the pixel unit of voltage threshold, including：
It is the location of in one group of pixel unit to be detected and every according to each first object pixel unit
The driving voltage of a first object pixel unit, determines to be used to indicate relationship between driving voltage and pixel unit position
First voltage change curve；
It is the location of in one group of pixel unit to be detected and every according to each second object pixel unit
The driving voltage of a second object pixel unit, determines to be used to indicate relationship between driving voltage and pixel unit position
Second voltage change curve；
Pixel unit indicated by the intersection point of the first voltage change curve and the second voltage change curve is determined as
The pixel unit of the short dot connection.
4. localization method according to claim 2, which is characterized in that the multiple object pixel unit includes：Multiple
One object pixel unit and multiple second object pixel units, the display brightness of the multiple first object pixel unit according to
Secondary reduction, the display brightness of the multiple second object pixel unit increase successively；
The driving voltage according to each object pixel unit is determined in the multiple pixel unit, driving voltage is not
More than the pixel unit of voltage threshold, including：
According to each object pixel unit the location of in one group of pixel unit to be detected and each institute
The driving voltage of object pixel unit is stated, determines to be used to indicate the tertiary voltage of relationship between driving voltage and pixel unit position
Change curve；
The minimum a little indicated pixel unit of driving voltage on the tertiary voltage change curve is determined as the short circuit
The connected pixel unit of point.
5. localization method according to any one of claims 1 to 4, which is characterized in that described to determine each object pixel
The driving voltage of unit, including：
The liquid crystal deflection angle of each object pixel unit of detection；
The liquid crystal deflection angle of each object pixel unit detected is converted into driving voltage, the driving voltage and institute
State the positive correlation of liquid crystal deflection angle.
6. localization method according to any one of claims 1 to 4, which is characterized in that described to determine each object pixel
The driving voltage of unit, including：
The grayscale value of each object pixel unit of detection；
The grayscale value of each object pixel unit detected is converted into driving voltage, the driving voltage and the ash
Rank is worth positive correlation.
7. the positioning device of short dot in a kind of display panel, which is characterized in that described device includes：
First determining module, for determining one group of pixel unit to be detected in the display panel, described to be detected one
Group pixel unit includes multiple pixel units, and the uniformity of the display brightness of the multiple pixel unit is less than uniformity threshold value；
Second determining module, for determining multiple object pixel units in one group of pixel unit to be detected；
Third determining module, for determining the driving voltage of each object pixel unit；
4th determining module for the driving voltage according to each object pixel unit, determines one group of pixel unit
In the pixel unit that is connect with short dot.
8. positioning device according to claim 7, which is characterized in that the 4th determining module is used for：
According to the driving voltage of each object pixel unit, determine in the multiple pixel unit, driving voltage is not more than
The pixel unit of voltage threshold；
Pixel unit of the driving voltage no more than voltage threshold is determined as the pixel unit being connect with the short dot.
9. positioning device according to claim 8, which is characterized in that the multiple object pixel unit includes：Multiple
One object pixel unit and multiple second object pixel units, the display brightness of the multiple first object pixel unit according to
Secondary reduction, the display brightness of the multiple second object pixel unit increase successively；
4th determining module, is used for：
It is the location of in one group of pixel unit to be detected and every according to each first object pixel unit
The driving voltage of a first object pixel unit, determines to be used to indicate relationship between driving voltage and pixel unit position
First voltage change curve；
It is the location of in one group of pixel unit to be detected and every according to each second object pixel unit
The driving voltage of a second object pixel unit, determines to be used to indicate relationship between driving voltage and pixel unit position
Second voltage change curve；
Pixel unit indicated by the intersection point of the first voltage change curve and the second voltage change curve is determined as
The pixel unit of the short dot connection.
10. positioning device according to claim 8, which is characterized in that the multiple object pixel unit includes：Multiple
One object pixel unit and multiple second object pixel units, the display brightness of the multiple first object pixel unit according to
Secondary reduction, the display brightness of the multiple second object pixel unit increase successively；
4th determining module, is used for：
According to each object pixel unit the location of in one group of pixel unit to be detected and each institute
The driving voltage of object pixel unit is stated, determines to be used to indicate the tertiary voltage of relationship between driving voltage and pixel unit position
Change curve；
The minimum a little indicated pixel unit of driving voltage on the tertiary voltage change curve is determined as the short circuit
The connected pixel unit of point.
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