CN105047115B - Detect drive circuit, detection drive device and detection method - Google Patents

Detect drive circuit, detection drive device and detection method Download PDF

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Publication number
CN105047115B
CN105047115B CN201510486282.5A CN201510486282A CN105047115B CN 105047115 B CN105047115 B CN 105047115B CN 201510486282 A CN201510486282 A CN 201510486282A CN 105047115 B CN105047115 B CN 105047115B
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CN
China
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detection
scan line
liquid crystal
crystal display
display panel
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CN201510486282.5A
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Chinese (zh)
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CN105047115A (en
Inventor
赵莽
田勇
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武汉华星光电技术有限公司
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Priority to CN201510486282.5A priority Critical patent/CN105047115B/en
Publication of CN105047115A publication Critical patent/CN105047115A/en
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Abstract

The present invention provides a kind of detection drive circuit, and for carrying out display detection to liquid crystal display panel, it includes the first GOA circuits, the 2nd GOA circuits and detection signal input circuit.Wherein detection signal input circuit is by the first drive signal for being sequentially generated the first scan line, and detection signal input circuit is by the second drive signal for being sequentially generated the second scan line;The order of first order and the second order is opposite.The present invention also provides a kind of detection drive device and detection method.The present invention improves the accuracy of the display performance detection to liquid crystal display panel by being driven to the first scan line and the second scan line using the opposite order of order.

Description

Detect drive circuit, detection drive device and detection method

Technical field

The present invention relates to detection field, more particularly to one kind detection drive circuit, detection drive device and liquid crystal display The detection method of panel.

Background technology

Fig. 1 is the structural representation of the detection drive circuit of existing liquid crystal display panel.Drive circuit includes being arranged on The first GOA circuits 11 (Gate On Array), the 2nd GOA circuits 12, the detection signal input circuit of liquid crystal display panel both sides 13, the detection signal input circuit 13 gives the scan line of liquid crystal display panel by the first GOA circuits 11 and the 2nd GOA circuits 12 14 input detection scanning signals and the data wire 15 to liquid crystal display panel input data detection signal;Wherein the first GOA electricity Road 11 is used for the pixel cell input detection scanning signal to the odd-numbered line of liquid crystal display panel, and the 2nd GOA circuits 12 are used to give The pixel cell input detection scanning signal of the even number line of liquid crystal display panel.

When the detection drive circuit of existing liquid crystal display panel is detected, the first GOA circuits 11 and the 2nd GOA electricity Road 12 inputs detection scanning signal, the storage electricity of the pixel cell on such top by order from top to bottom to pixel cell respectively The electric leakage time of appearance is more than the electric leakage time of the storage capacitance of the pixel cell of bottom, so as to cause the property of the pixel cell on top Energy testing result is poor.

Specific to refer to Fig. 2, Fig. 2 is storage capacitance corresponding to the often row pixel cell of liquid crystal display panel in detection process Storing electricity schematic diagram.As seen from Figure 2, last column pixel cell input detection scanning signal and testing number it is believed that After number (time of measuring), the detection of storing electricity is carried out to storage capacitance corresponding to all pixels electrode, at this moment due to electric leakage Overlong time, the storing electricity of storage capacitance corresponding to the pixel cell of the first row are corresponding far below the pixel cell of last column Storage capacitance storing electricity.The electrical performance of so pixel cell on top is poor.

Therefore, it is necessary to a kind of detection method for detecting drive circuit, detection drive device and liquid crystal display panel is provided, with Solves the problems of prior art.

The content of the invention

It will not be caused it is an object of the invention to provide a kind of due to the input sequence of detection scanning signal to liquid crystal display The display performance of panel produces the detection drive circuit of error detection, detects the detection side of drive device and liquid crystal display panel Method;To solve the detection method of existing detection drive circuit, detection drive device and liquid crystal display panel due to scanning signal Input sequence, cause the technical problem that error detection is produced to the display performance of liquid crystal display panel.

The embodiment of the present invention provides a kind of detection drive circuit, and for carrying out display detection to liquid crystal display panel, it is wrapped Include:

First GOA circuits, the side of the liquid crystal display panel is arranged on, for first to the liquid crystal display panel Scan line is driven;

2nd GOA circuits, the opposite side of the liquid crystal display panel is arranged on, for the liquid crystal display panel Two scan lines are driven;And

Detection signal input circuit, for generating the drive of first scan line, second scan line and data wire Dynamic signal;

Wherein described detection signal input circuit is by the first drive signal for being sequentially generated first scan line, the inspection Signal input circuit is surveyed by the second drive signal for being sequentially generated second scan line;First order and described second suitable The order of sequence is opposite.

In detection drive circuit of the present invention, first scan line is the odd-numbered line of the liquid crystal display panel Pixel cell scan line, second scan line for the liquid crystal display panel even number line pixel cell scanning Line;Or

First scan line is the scan line of the pixel cell of the even number line of the liquid crystal display panel, and described second sweeps Retouch the scan line of the pixel cell for the odd-numbered line that line is the liquid crystal display panel.

In detection drive circuit of the present invention, when first order is forward scan order, described second is suitable When sequence is reverse scan order, the detection signal input circuit is sequentially generated first scan line by the forward scan Drive signal, the detection signal input circuit are generated the drive signal of second scan line by the reverse scan order;

When first order is reverse scan order, and second order is forward scan order, the detection letter When number input circuit is generated the drive signal of first scan line by the reverse scan order, the detection signal input electricity Road is sequentially generated the drive signal of second scan line by the forward scan.

The present invention also provides a kind of detection drive device, and it includes:

Drive circuit is detected, including:

First GOA circuits, the side of the liquid crystal display panel is arranged on, for first to the liquid crystal display panel Scan line is driven;

2nd GOA circuits, the opposite side of the liquid crystal display panel is arranged on, for the liquid crystal display panel Two scan lines are driven;And

Detection signal input circuit, for generating the drive of first scan line, second scan line and data wire Dynamic signal;

Wherein described detection signal input circuit is by the first drive signal for being sequentially generated first scan line, the inspection Signal input circuit is surveyed by the second drive signal for being sequentially generated second scan line;First order and described second suitable The order of sequence is opposite;And

Picture detection module, for after the detection signal input circuit inputs a frame and detects the signal of image frame, examining Survey the picture show uniformity of the liquid crystal display panel.

In detection drive device of the present invention, first scan line is the odd-numbered line of the liquid crystal display panel Pixel cell scan line, second scan line for the liquid crystal display panel even number line pixel cell scanning Line;Or

First scan line is the scan line of the pixel cell of the even number line of the liquid crystal display panel, and described second sweeps Retouch the scan line of the pixel cell for the odd-numbered line that line is the liquid crystal display panel.

In detection drive device of the present invention, when first order is forward scan order, described second is suitable When sequence is reverse scan order, the detection signal input circuit is sequentially generated first scan line by the forward scan During drive signal, the detection signal input circuit is generated the driving letter of second scan line by the reverse scan order Number;

When first order is reverse scan order, and second order is forward scan order, the detection letter When number input circuit is generated the drive signal of first scan line by the reverse scan order, the detection signal input electricity Road is sequentially generated the drive signal of second scan line by the forward scan.

The present invention also provides a kind of detection for carrying out picture display detection to liquid crystal display panel using detection drive device Method, wherein the detection drive device includes:

Drive circuit is detected, including:

First GOA circuits, the side of the liquid crystal display panel is arranged on, for first to the liquid crystal display panel Scan line is driven;

2nd GOA circuits, the opposite side of the liquid crystal display panel is arranged on, for the liquid crystal display panel Two scan lines are driven;And

Detection signal input circuit, for generating the drive of first scan line, second scan line and data wire Dynamic signal;And

Picture detection module, for after the detection signal input circuit inputs a frame and detects the signal of image frame, examining Survey the picture show uniformity of the liquid crystal display panel;Characterized in that, the detection method includes:

The detection signal input circuit is by the first drive signal for being sequentially generated first scan line, and by described First GOA circuit transmissions are to first scan line;The detection signal input circuit is sequentially generated described second by second and swept The drive signal of line is retouched, and passes through the 2nd GOA circuit transmissions to second scan line;And the detection signal input The drive signal of circuit evolving data wire is simultaneously transmitted to the data wire;Time of wherein described first order and second order Sequence is opposite;And

The picture detection module detects the picture show uniformity of the liquid crystal display panel.

In detection method of the present invention, the picture that the picture detection module detects the liquid crystal display panel shows The step of showing uniformity be specially:

The electricity superposition value of picture detection module storage capacitance according to corresponding to two adjacent row pixel cells, detection The picture show uniformity of the liquid crystal display panel.

In detection method of the present invention, first scan line is the picture of the odd-numbered line of the liquid crystal display panel The scan line of plain unit, second scan line are the scan line of the pixel cell of the even number line of the liquid crystal display panel;Or

First scan line is the scan line of the pixel cell of the even number line of the liquid crystal display panel, and described second sweeps Retouch the scan line of the pixel cell for the odd-numbered line that line is the liquid crystal display panel.

In detection method of the present invention, when first order is forward scan order, second order is During reverse scan order, the detection signal input circuit is sequentially generated the driving of first scan line by the forward scan During signal, the detection signal input circuit is generated the drive signal of second scan line by the reverse scan order;

When first order is reverse scan order, and second order is forward scan order, when the detection When signal input circuit is generated the drive signal of first scan line by the reverse scan order, the detection signal input Circuit is sequentially generated the drive signal of second scan line by the forward scan.

Compared to the detection method of existing detection drive circuit, detection drive device and liquid crystal display panel, the present invention Detection drive circuit, detection drive device and liquid crystal display panel detection method pass through to the first scan line and second scan Line is driven using the opposite order of order, improves the accuracy of the display performance detection to liquid crystal display panel;Solve The detection method of existing detection drive circuit, detection drive device and liquid crystal display panel is suitable due to the input of scanning signal Sequence, cause the technical problem that error detection is produced to the display performance of liquid crystal display panel.

For the above of the present invention can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, make Describe in detail as follows:

Brief description of the drawings

Fig. 1 is the structural representation of the detection drive circuit of existing liquid crystal display panel;

Fig. 2 is the storing electricity signal of storage capacitance corresponding to the often row pixel electrode of liquid crystal display panel in detection process Figure;

Fig. 3 is the structural representation of the first preferred embodiment of the detection drive circuit of the liquid crystal display panel of the present invention;

Fig. 4 is the structural representation of the second preferred embodiment of the detection drive circuit of the liquid crystal display panel of the present invention;

Fig. 5 is the structural representation of the detection drive device of the liquid crystal display panel of the present invention;

Fig. 6 is the flow chart that the liquid crystal display panel of the present invention carries out the detection method of picture display detection.

Embodiment

The explanation of following embodiment is with reference to additional schema, to illustrate the particular implementation that the present invention can be used to implementation Example.The direction term that the present invention is previously mentioned, such as " on ", " under ", "front", "rear", "left", "right", " interior ", " outer ", " side " Deng being only the direction with reference to annexed drawings.Therefore, the direction term used is to illustrate and understand the present invention, and is not used to The limitation present invention.

In figure, the similar unit of structure is represented with identical label.

Fig. 3 is refer to, Fig. 3 is the knot of the first preferred embodiment of the detection drive circuit of the liquid crystal display panel of the present invention Structure schematic diagram.The detection drive circuit of this preferred embodiment is used to carry out display detection to liquid crystal display panel, detection driving Circuit includes the first GOA circuits 31, the 2nd GOA circuits 32 and detection signal input circuit 33, and the first GOA circuits 31 are arranged on The side of liquid crystal display panel, for being driven to the first scan line 34 of liquid crystal display panel;2nd GOA circuits 32 are set In the opposite side of liquid crystal display panel, for being driven to the second scan line 35 of liquid crystal display panel;Detection signal inputs Circuit 33 is used for the drive signal for generating the first scan line 34, the second scan line 35 and data wire 36.

Wherein detection signal input circuit 33 is defeated by the first drive signal for being sequentially generated the first scan line 34, detection signal Enter circuit 33 by the second drive signal for being sequentially generated the second scan line 35, the order of the first order and the second order is opposite.

The first scan line 34 is the scan line of the pixel cell of the odd-numbered line of liquid crystal display panel in the preferred embodiment, Second scan line 35 is the scan line of the pixel cell of the even number line of liquid crystal display panel.Detection signal input circuit 33 is by forward direction The drive signal for being sequentially generated the first scan line 34 of scanning, detection signal input circuit 33 are sequentially generated the by anti-phase scanning The drive signal of two scan lines 35.

When display detection is carried out to liquid crystal display panel using the detection drive circuit of this preferred embodiment, when described first Order is forward scan order, and when second order is reverse scan order, detection signal input circuit 33 presses forward scan The drive signal of the first scan line 34 is sequentially generated, and is transmitted by the first GOA circuits 31 to the first scan line 34;Detection letter Number input circuit 33 is generated the drive signal of the second scan line 35 by reverse scan order, and is transmitted by the 2nd GOA circuits 32 To the second scan line 35;Detection signal input circuit 33 generates the drive signal of data wire 36 simultaneously, and transmits to data wire 36。

The electricity superposition value of storage capacitance corresponding to two adjacent row pixel cells is then detected, due to the of forward scan The electric leakage time of the pixel cell to be leaked electricity in scan line 34 in time longer adjacent the second scan line 35 of pixel cell compared with It is short, the pixel list in time of being leaked electricity in the first scan line 34 of forward scan shorter adjacent the second scan line 35 of pixel cell The electric leakage time of member is longer, therefore the electricity of storage capacitance corresponding to two adjacent row pixel cells is overlapped can be preferable Avoid due to different pixel cells electric leakage the time the influence different in size to testing result.

Finally according to corresponding to two adjacent row pixel cells storage capacitance electricity superposition value, detect liquid crystal display panel Picture show uniformity.Such as make the electricity superposition value of the storage capacitance of every two rows pixel cell of whole liquid crystal display panel Distribution map, according to the fluctuation situation of curve in the electricity superposition value distribution map, the picture of reflecting liquid crystal display panel is shown uniformly Property;It so can preferably avoid error detection.

Certainly in the preferred embodiment, the pixel cell of the first scan line 34 or the even number line of liquid crystal display panel Scan line, the second scan line 35 for liquid crystal display panel odd-numbered line pixel cell scan line.

The detection drive circuit of this preferred embodiment passes through opposite using order to the first scan line and the second scan line Order is driven, and improves the accuracy of the display performance detection to liquid crystal display panel.

Fig. 4 is refer to, Fig. 4 is the knot of the second preferred embodiment of the detection drive circuit of the liquid crystal display panel of the present invention Structure schematic diagram.The detection drive circuit of this preferred embodiment includes the first GOA circuits 41, the 2nd GOA circuits 42 and detection letter Number input circuit 43.The detection drive circuit of this preferred embodiment and the difference of first preferred embodiment are that detection signal is defeated Enter the drive signal that circuit 43 is generated the first scan line 44 by anti-phase scanning sequency, detection signal input circuit 43 presses forward scan It is sequentially generated the drive signal of the second scan line 45.

The specific operation principle of the detection drive circuit of this preferred embodiment and the first of above-mentioned detection drive circuit Description in preferred embodiment is same or similar, specifically refers to the phase in the first preferred embodiment of above-mentioned detection drive circuit Close description.

The detection drive circuit of this preferred embodiment uses order phase again by the first scan line and the second scan line Anti- order is driven, and improves the accuracy of the display performance detection to liquid crystal display panel.

The present invention also provides a kind of detection drive device, refer to Fig. 5, and Fig. 5 is the inspection of the liquid crystal display panel of the present invention Survey the structural representation of drive device.The detection drive device 50 includes detection drive circuit 51 and picture detection module 52. The detection drive circuit 51 includes the first GOA circuits, the 2nd GOA circuits and detection signal input circuit, and the first GOA circuits are set Put in the side of liquid crystal display panel, for being driven to the first scan line of liquid crystal display panel;2nd GOA circuits are set In the opposite side of liquid crystal display panel, for being driven to the second scan line of liquid crystal display panel;Detection signal input electricity Road is used for the drive signal for generating the first scan line, the second scan line and data wire.Wherein detection signal input circuit is by the One is sequentially generated the drive signal of the first scan line, and detection signal input circuit is by the second driving for being sequentially generated the second scan line The order of signal, the second order and the second order is opposite.

Picture detection module 52 is used to after detection signal input circuit inputs the signal of frame detection image frame, detect liquid The picture show uniformity of LCD panel.

Preferably, first scan line for the liquid crystal display panel odd-numbered line pixel cell scan line, institute State the scan line of the pixel cell for the even number line that the second scan line is the liquid crystal display panel;Or first scan line is institute The scan line of the pixel cell of the even number line of liquid crystal display panel is stated, second scan line is strange for the liquid crystal display panel The scan line of several rows of pixel cell.

Preferably, when the detection signal input circuit is by the driving for being sequentially generated first scan line of forward scan During signal, the detection signal input circuit by reverse scan the drive signal for being sequentially generated second scan line;Work as institute State detection signal input circuit by reverse scan the drive signal for being sequentially generated first scan line when, the detection signal Input circuit by forward scan the drive signal for being sequentially generated second scan line.

The specific operation principle of the detection drive device 50 of this preferred embodiment is excellent with above-mentioned detection drive circuit Select the description in embodiment same or similar, the correlation specifically referred in the preferred embodiment of above-mentioned detection drive circuit is retouched State.

The detection drive device of this preferred embodiment passes through opposite using order to the first scan line and the second scan line Order is driven, and improves the accuracy of the display performance detection to liquid crystal display panel.

The present invention also provides a kind of detection method, and the liquid crystal display panel that Fig. 6 is the present invention carries out picture display detection The flow chart of detection method.The detection method of this preferred embodiment is implemented using above-mentioned detection drive device, the detection Method includes:

Step S601, detection signal input circuit pass through by the first drive signal for being sequentially generated the first scan line One GOA circuit transmissions to the first scan line;Detection signal input circuit by the second drive signal for being sequentially generated the second scan line, And pass through the 2nd GOA circuit transmissions to the second scan line;And the drive signal of detection signal input circuit generation data wire is simultaneously Transmit to data wire;The order of first order and the second order is opposite;

Step S602, picture detection module detect the picture show uniformity of liquid crystal display panel, are specially:Picture detects The electricity superposition value of module storage capacitance according to corresponding to two adjacent row pixel cells, the picture for detecting liquid crystal display panel show Show uniformity.

So complete the detection process of the liquid crystal display panel of this preferred embodiment.

Preferably, first scan line for the liquid crystal display panel odd-numbered line pixel cell scan line, institute State the scan line of the pixel cell for the even number line that the second scan line is the liquid crystal display panel;Or first scan line is institute The scan line of the pixel cell of the even number line of liquid crystal display panel is stated, second scan line is strange for the liquid crystal display panel The scan line of several rows of pixel cell.

Preferably, when the detection signal input circuit is by the driving for being sequentially generated first scan line of forward scan During signal, the detection signal input circuit by reverse scan the drive signal for being sequentially generated second scan line;Work as institute State detection signal input circuit by reverse scan the drive signal for being sequentially generated first scan line when, the detection signal Input circuit by forward scan the drive signal for being sequentially generated second scan line.

The detection drive circuit of the present invention, the detection method of drive device and liquid crystal display panel is detected by being swept to first Retouch line and the second scan line to be driven using the opposite order of order, improve the display performance detection to liquid crystal display panel Accuracy;The detection method of existing detection drive circuit, detection drive device and liquid crystal display panel is solved due to sweeping The input sequence of signal is retouched, causes the technical problem that error detection is produced to the display performance of liquid crystal display panel.

In summary, although the present invention is disclosed above with preferred embodiment, above preferred embodiment simultaneously is not used to limit The system present invention, one of ordinary skill in the art, without departing from the spirit and scope of the present invention, it can make various changes and profit Decorations, therefore protection scope of the present invention is defined by the scope that claim defines.

Claims (3)

  1. A kind of 1. detection method for carrying out picture display detection to liquid crystal display panel using detection drive device, wherein the inspection Surveying drive device includes:
    Drive circuit is detected, including:
    First GOA circuits, the side of the liquid crystal display panel is arranged on, for the first scanning to the liquid crystal display panel Line is driven;
    2nd GOA circuits, the opposite side of the liquid crystal display panel is arranged on, for being swept to the second of the liquid crystal display panel Line is retouched to be driven;And
    Detection signal input circuit, the driving for generating first scan line, second scan line and data wire are believed Number;The detection drive circuit is used to carry out display detection to liquid crystal display panel, to improve the display to liquid crystal display panel The accuracy of performance detection;And
    Picture detection module, for after the detection signal input circuit inputs a frame and detects the signal of image frame, detecting institute State the picture show uniformity of liquid crystal display panel;Characterized in that, the detection method includes:
    The detection signal input circuit is sequentially generated the drive signal of first scan line by first, and passes through described first GOA circuit transmissions are to first scan line;The detection signal input circuit is sequentially generated second scan line by second Drive signal, and pass through the 2nd GOA circuit transmissions to second scan line;And the detection signal input circuit Generate the drive signal of data wire and transmit to the data wire;The order phase of wherein described first order and second order Instead;And
    The electricity superposition value of picture detection module storage capacitance according to corresponding to two adjacent row pixel cells, described in detection The picture show uniformity of liquid crystal display panel.
  2. 2. detection method according to claim 1, it is characterised in that
    First scan line for the liquid crystal display panel odd-numbered line pixel cell scan line, second scan line For the scan line of the pixel cell of the even number line of the liquid crystal display panel;Or
    First scan line for the liquid crystal display panel even number line pixel cell scan line, second scan line For the scan line of the pixel cell of the odd-numbered line of the liquid crystal display panel.
  3. 3. detection method according to claim 1, it is characterised in that
    When first order is forward scan order, when second order is reverse scan order, the detection signal is defeated When entering circuit and being sequentially generated the drive signal of first scan line by the forward scan, the detection signal input circuit is pressed The reverse scan order generates the drive signal of second scan line;
    When first order is reverse scan order, and second order is forward scan order, when the detection signal When input circuit is generated the drive signal of first scan line by the reverse scan order, the detection signal input circuit The drive signal of second scan line is sequentially generated by the forward scan.
CN201510486282.5A 2015-08-10 2015-08-10 Detect drive circuit, detection drive device and detection method CN105047115B (en)

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CN106652952A (en) * 2016-12-30 2017-05-10 武汉华星光电技术有限公司 Driving method, display panel and dot inversion driving method thereof
CN106782415B (en) 2017-02-27 2019-03-12 武汉华星光电技术有限公司 A kind of driving method of liquid crystal display panel

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CN1204781A (en) * 1997-04-28 1999-01-13 松下电器产业株式会社 Crystal display device and driving method thereof
TW495729B (en) * 1999-12-01 2002-07-21 Chi Mei Electronics Corp Liquid crystal display module and scanning circuit board thereof
CN1204781C (en) * 2003-09-22 2005-06-01 江阴市华顺特种玻璃有限公司 Electrothermal glass panel for electronic balance and its production process
KR100731267B1 (en) * 2004-11-10 2007-06-21 삼성에스디아이 주식회사 Liquid crystal display and driving method thereof
CN100492114C (en) * 2007-03-28 2009-05-27 友达光电股份有限公司 Field order type liquid crystal display device driving method
CN101739972B (en) * 2008-11-19 2012-09-05 上海天马微电子有限公司 Liquid crystal display device, as well as drive method and drive circuit thereof
KR20130070206A (en) * 2011-12-19 2013-06-27 삼성디스플레이 주식회사 Organic light emitting display device
CN104252079B (en) * 2014-09-28 2017-12-26 京东方科技集团股份有限公司 A kind of array base palte and its driving method, display panel, display device
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CN104795044B (en) * 2015-05-12 2017-07-28 京东方科技集团股份有限公司 Drive device, driving method and display device

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