CN105047115A - Detection drive circuit, detection drive unit and detection method - Google Patents

Detection drive circuit, detection drive unit and detection method Download PDF

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Publication number
CN105047115A
CN105047115A CN201510486282.5A CN201510486282A CN105047115A CN 105047115 A CN105047115 A CN 105047115A CN 201510486282 A CN201510486282 A CN 201510486282A CN 105047115 A CN105047115 A CN 105047115A
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described
sweep trace
order
display panels
signal input
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CN201510486282.5A
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Chinese (zh)
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CN105047115B (en
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赵莽
田勇
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武汉华星光电技术有限公司
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Abstract

The invention provides a detection drive circuit which is used for performing display detection on a liquid crystal display panel. The detection drive circuit comprises a GOA circuit, a second GOA circuit and a detection signal input circuit. The detection signal input circuit generates a drive signal of a first scanning line according to a first order; the detection signal input circuit generates a drive signal of a second scanning line according to a second order; and the sequences of the first older and the second older are opposite. The invention also provides a detection drive unit and a detection method. The invention performs driving through the fact that the usage sequences of the first scanning line and the second scanning line are opposite, which improves the accuracy of detecting the display performance of the liquid crystal display panel.

Description

Detect driving circuit, detect drive unit and detection method

Technical field

The present invention relates to detection field, particularly relate to a kind of detection method detecting driving circuit, detect drive unit and display panels.

Background technology

Fig. 1 is the structural representation of the detection driving circuit of existing display panels.Driving circuit comprises the GOA circuit 11 (GateOnArray), the 2nd GOA circuit 12, the detection signal input circuit 13 that are arranged on display panels both sides, and this detection signal input circuit 13 detects sweep signal to the input of the sweep trace 14 of display panels by a GOA circuit 11 and the 2nd GOA circuit 12 and inputted data detection signal to the data line 15 of display panels; Wherein a GOA circuit 11 detects sweep signal for giving the pixel cell input of the odd-numbered line of display panels, and the 2nd GOA circuit 12 detects sweep signal for giving the pixel cell input of the even number line of display panels.

When the detection driving circuit of existing display panels detects, one GOA circuit 11 and the 2nd GOA circuit 12 detect sweep signal by order from top to bottom to pixel cell input respectively, the electric leakage time of the memory capacitance of the pixel cell on such top is greater than the electric leakage time of the memory capacitance of the pixel cell of bottom, thus causes the performance test results of the pixel cell on top poor.

Specifically please refer to Fig. 2, Fig. 2 is the storing electricity schematic diagram of the memory capacitance that the often row pixel cell of display panels in testing process is corresponding.As seen from Figure 2, in the end one-row pixels unit input detect sweep signal and data detection signal after (Measuring Time), the memory capacitance corresponding to all pixel electrodes carries out the detection of storing electricity, at this moment due to electric leakage overlong time, the storing electricity of the memory capacitance that the storing electricity of the memory capacitance that the pixel cell of the first row is corresponding is corresponding far below the pixel cell of last column.The electrical performance of the pixel cell on such top is poor.

Therefore, be necessary to provide a kind of detection method detecting driving circuit, detect drive unit and display panels, to solve the problem existing for prior art.

Summary of the invention

The object of the present invention is to provide a kind of can not, owing to detecting the input sequence of sweep signal, causing the display performance of display panels is produced to the detection driving circuit of error-detecting, detects the detection method of drive unit and display panels; To solve existing detection driving circuit, to detect the input sequence of detection method due to sweep signal of drive unit and display panels, cause the technical matters display performance of display panels being produced to error-detecting.

The embodiment of the present invention provides a kind of and detects driving circuit, and detect for carrying out display to display panels, it comprises:

One GOA circuit, is arranged on the side of described display panels, for driving the first sweep trace of described display panels;

2nd GOA circuit, is arranged on the opposite side of described display panels, for driving the second sweep trace of described display panels; And

Detection signal input circuit, for generating the drive singal of described first sweep trace, described second sweep trace and data line;

Wherein said detection signal input circuit generates the drive singal of described first sweep trace by the first order, and described detection signal input circuit generates the drive singal of described second sweep trace by the second order; The order of described first order and described second order is contrary.

In detection driving circuit of the present invention, described first sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the even number line of described display panels; Or

Described first sweep trace is the sweep trace of the pixel cell of the even number line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels.

In detection driving circuit of the present invention, when described first order is forward scan order, when described second order is reverse scan order, described detection signal input circuit generates the drive singal of described first sweep trace by described forward scan order, and described detection signal input circuit generates the drive singal of described second sweep trace by described reverse scan order;

When described first order is reverse scan order, when described second order is for forward scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described reverse scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described forward scan order.

The present invention also provides a kind of and detects drive unit, and it comprises:

Detect driving circuit, comprising:

One GOA circuit, is arranged on the side of described display panels, for driving the first sweep trace of described display panels;

2nd GOA circuit, is arranged on the opposite side of described display panels, for driving the second sweep trace of described display panels; And

Detection signal input circuit, for generating the drive singal of described first sweep trace, described second sweep trace and data line;

Wherein said detection signal input circuit generates the drive singal of described first sweep trace by the first order, and described detection signal input circuit generates the drive singal of described second sweep trace by the second order; The order of described first order and described second order is contrary; And

Picture detection module, after detecting the signal of image frame, detects the picture show uniformity of described display panels for inputting a frame when described detection signal input circuit.

In detection drive unit of the present invention, described first sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the even number line of described display panels; Or

Described first sweep trace is the sweep trace of the pixel cell of the even number line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels.

In detection drive unit of the present invention, when described first order is forward scan order, when described second order is reverse scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described forward scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described reverse scan order;

When described first order is reverse scan order, when described second order is for forward scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described reverse scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described forward scan order.

The present invention also provides a kind of use to detect drive unit carries out picture display detection detection method to display panels, and wherein said detection drive unit comprises:

Detect driving circuit, comprising:

One GOA circuit, is arranged on the side of described display panels, for driving the first sweep trace of described display panels;

2nd GOA circuit, is arranged on the opposite side of described display panels, for driving the second sweep trace of described display panels; And

Detection signal input circuit, for generating the drive singal of described first sweep trace, described second sweep trace and data line; And

Picture detection module, after detecting the signal of image frame, detects the picture show uniformity of described display panels for inputting a frame when described detection signal input circuit; It is characterized in that, described detection method comprises:

Described detection signal input circuit generates the drive singal of described first sweep trace by the first order, and by a described GOA circuit transmission to described first sweep trace; Described detection signal input circuit generates the drive singal of described second sweep trace by the second order, and by described 2nd GOA circuit transmission to described second sweep trace; And described detection signal input circuit generates the drive singal of data line and transfers to described data line; The order of wherein said first order and described second order is contrary; And

Described picture detection module detects the picture show uniformity of described display panels.

In detection method of the present invention, the step that described picture detection module detects the picture show uniformity of described display panels is specially:

Described picture detection module, according to the electricity superposition value of memory capacitance corresponding to two adjacent row pixel cells, detects the picture show uniformity of described display panels.

In detection method of the present invention, described first sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the even number line of described display panels; Or

Described first sweep trace is the sweep trace of the pixel cell of the even number line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels.

In detection method of the present invention, when described first order is forward scan order, when described second order is reverse scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described forward scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described reverse scan order;

When described first order is reverse scan order, when described second order is for forward scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described reverse scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described forward scan order.

Compared to existing detection driving circuit, the detection method detecting drive unit and display panels, the detection method of detection driving circuit of the present invention, detection drive unit and display panels, by using the contrary order of order to drive to the first sweep trace and the second sweep trace, improves the accuracy detected the display performance of display panels; Solve existing detection driving circuit, detect the input sequence of detection method due to sweep signal of drive unit and display panels, cause the technical matters display performance of display panels being produced to error-detecting.

For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below:

Accompanying drawing explanation

Fig. 1 is the structural representation of the detection driving circuit of existing display panels;

Fig. 2 is the storing electricity schematic diagram of the memory capacitance that the often row pixel electrode of display panels in testing process is corresponding;

Fig. 3 is the structural representation of the first preferred embodiment of the detection driving circuit of display panels of the present invention;

Fig. 4 is the structural representation of the second preferred embodiment of the detection driving circuit of display panels of the present invention;

Fig. 5 is the structural representation of the detection drive unit of display panels of the present invention;

Fig. 6 is the process flow diagram that display panels of the present invention carries out the detection method that picture display detects.

Embodiment

The explanation of following embodiment is graphic with reference to what add, can in order to the specific embodiment implemented in order to illustrate the present invention.The direction term that the present invention mentions, such as " on ", D score, "front", "rear", "left", "right", " interior ", " outward ", " side " etc., be only the direction with reference to annexed drawings.Therefore, the direction term of use is in order to illustrate and to understand the present invention, and is not used to limit the present invention.

In the drawings, the unit that structure is similar represents with identical label.

Please refer to Fig. 3, Fig. 3 is the structural representation of the first preferred embodiment of the detection driving circuit of display panels of the present invention.The detection driving circuit of this preferred embodiment is used for carrying out display to display panels and detects, this detection driving circuit comprises a GOA circuit 31, the 2nd GOA circuit 32 and detection signal input circuit 33, one GOA circuit 31 is arranged on the side of display panels, for driving the first sweep trace 34 of display panels; 2nd GOA circuit 32 is arranged on the opposite side of display panels, for driving the second sweep trace 35 of display panels; Detection signal input circuit 33 is for generating the drive singal of the first sweep trace 34, second sweep trace 35 and data line 36.

Wherein detection signal input circuit 33 generates the drive singal of the first sweep trace 34 by the first order, and detection signal input circuit 33 generates the drive singal of the second sweep trace 35 by the second order, and the order of the first order and the second order is contrary.

First sweep trace 34 is the sweep trace of the pixel cell of the odd-numbered line of display panels in the preferred embodiment, and the second sweep trace 35 is the sweep trace of the pixel cell of the even number line of display panels.Detection signal input circuit 33 generates the drive singal of the first sweep trace 34 by the order of forward scan, and detection signal input circuit 33 generates the drive singal of the second sweep trace 35 by the order of anti-phase scanning.

When using the detection driving circuit of this preferred embodiment to carry out display detection to display panels, when described first order is forward scan order, when described second order is reverse scan order, detection signal input circuit 33 generates the drive singal of the first sweep trace 34 by forward scan order, and transfers on the first sweep trace 34 by a GOA circuit 31; Detection signal input circuit 33 generates the drive singal of the second sweep trace 35 by reverse scan order, and transfers on the second sweep trace 35 by the 2nd GOA circuit 32; Detection signal input circuit 33 generates the drive singal of data line 36 simultaneously, and transfers to data line 36.

Detect the electricity superposition value of memory capacitance corresponding to two adjacent row pixel cells subsequently, because the electric leakage time of the pixel cell on the second sweep trace 35 that the pixel cell that the time that the first sweep trace 34 of forward scan leaks electricity is longer is adjacent is shorter, the electric leakage time of the pixel cell on the second sweep trace 35 that time that the first sweep trace 34 of forward scan leaks electricity shorter pixel cell is adjacent is longer, therefore the electricity of memory capacitance corresponding for two adjacent row pixel cells is carried out the impact on testing result different in size superposing the electric leakage time can avoided preferably due to different pixel cells.

The electricity superposition value of the last memory capacitance corresponding according to two adjacent row pixel cells, detects the picture show uniformity of display panels.As made the electricity superposition value distribution plan of the memory capacitance of every two row pixel cells of whole display panels, according to the fluctuation situation of curve in this electricity superposition value distribution plan, the picture show uniformity of reflecting liquid crystal display panel; Error-detecting can be avoided preferably like this.

Certainly in the preferred embodiment, the first sweep trace 34 also can be the sweep trace of the pixel cell of the even number line of display panels, and the second sweep trace 35 is the sweep trace of the pixel cell of the odd-numbered line of display panels.

The detection driving circuit of this preferred embodiment, by using the contrary order of order to drive to the first sweep trace and the second sweep trace, improves the accuracy detected the display performance of display panels.

Please refer to Fig. 4, Fig. 4 is the structural representation of the second preferred embodiment of the detection driving circuit of display panels of the present invention.The detection driving circuit of this preferred embodiment comprises a GOA circuit 41, the 2nd GOA circuit 42 and detection signal input circuit 43.The detection driving circuit of this preferred embodiment and the difference of the first preferred embodiment are, detection signal input circuit 43 generates the drive singal of the first sweep trace 44 by anti-phase scanning sequency, and detection signal input circuit 43 generates the drive singal of the second sweep trace 45 by forward scan order.

Description in the concrete principle of work of the detection driving circuit of this preferred embodiment and the first preferred embodiment of above-mentioned detection driving circuit is same or similar, specifically refers to the associated description in the first preferred embodiment of above-mentioned detection driving circuit.

The detection driving circuit of this preferred embodiment, equally by using the contrary order of order to drive to the first sweep trace and the second sweep trace, improves the accuracy detected the display performance of display panels.

The present invention also provides a kind of and detects drive unit, and please refer to Fig. 5, Fig. 5 is the structural representation of the detection drive unit of display panels of the present invention.This detection drive unit 50 comprises detection driving circuit 51 and picture detection module 52.This detection driving circuit 51 comprises a GOA circuit, the 2nd GOA circuit and detection signal input circuit, and a GOA circuit is arranged on the side of display panels, for driving the first sweep trace of display panels; 2nd GOA circuit is arranged on the opposite side of display panels, for driving the second sweep trace of display panels; Detection signal input circuit is for generating the drive singal of the first sweep trace, the second sweep trace and data line.Wherein detection signal input circuit generates the drive singal of the first sweep trace by the first order, and detection signal input circuit generates the drive singal of the second sweep trace by the second order, and the order of the second order and the second order is contrary.

Picture detection module 52 detects the picture show uniformity of display panels detect the signal of image frame for inputting a frame when detection signal input circuit after.

Preferably, described first sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the even number line of described display panels; Or described first sweep trace is the sweep trace of the pixel cell of the even number line of described display panels, described second sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels.

Preferably, when described detection signal input circuit generates the drive singal of described first sweep trace by the order of forward scan, described detection signal input circuit generates the drive singal of described second sweep trace by the order of reverse scan; When described detection signal input circuit generates the drive singal of described first sweep trace by the order of reverse scan, described detection signal input circuit generates the drive singal of described second sweep trace by the order of forward scan.

Description in the concrete principle of work of the detection drive unit 50 of this preferred embodiment and the preferred embodiment of above-mentioned detection driving circuit is same or similar, specifically refers to the associated description in the preferred embodiment of above-mentioned detection driving circuit.

The detection drive unit of this preferred embodiment, by using the contrary order of order to drive to the first sweep trace and the second sweep trace, improves the accuracy detected the display performance of display panels.

The present invention also provides a kind of detection method, and Fig. 6 is the process flow diagram that display panels of the present invention carries out the detection method that picture display detects.The detection method of this preferred embodiment uses above-mentioned detection drive unit to implement, and this detection method comprises:

Step S601, detection signal input circuit generates the drive singal of the first sweep trace by the first order, and by GOA circuit transmission to the first sweep trace; Detection signal input circuit generates the drive singal of the second sweep trace by the second order, and by the 2nd GOA circuit transmission to the second sweep trace; And detection signal input circuit generates the drive singal of data line and transfers to data line; The order of the first order and the second order is contrary;

Step S602, picture detection module detects the picture show uniformity of display panels, is specially: picture detection module, according to the electricity superposition value of memory capacitance corresponding to two adjacent row pixel cells, detects the picture show uniformity of display panels.

So namely, complete the testing process of the display panels of this preferred embodiment.

Preferably, described first sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the even number line of described display panels; Or described first sweep trace is the sweep trace of the pixel cell of the even number line of described display panels, described second sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels.

Preferably, when described detection signal input circuit generates the drive singal of described first sweep trace by the order of forward scan, described detection signal input circuit generates the drive singal of described second sweep trace by the order of reverse scan; When described detection signal input circuit generates the drive singal of described first sweep trace by the order of reverse scan, described detection signal input circuit generates the drive singal of described second sweep trace by the order of forward scan.

The detection method of detection driving circuit of the present invention, detection drive unit and display panels, by using the contrary order of order to drive to the first sweep trace and the second sweep trace, improves the accuracy detected the display performance of display panels; Solve existing detection driving circuit, detect the input sequence of detection method due to sweep signal of drive unit and display panels, cause the technical matters display performance of display panels being produced to error-detecting.

In sum; although the present invention discloses as above with preferred embodiment; but above preferred embodiment is also not used to limit the present invention; those of ordinary skill in the art; without departing from the spirit and scope of the present invention; all can do various change and retouching, the scope that therefore protection scope of the present invention defines with claim is as the criterion.

Claims (10)

1. a detection driving circuit, detects for carrying out display to display panels, it is characterized in that, comprising:
One GOA circuit, is arranged on the side of described display panels, for driving the first sweep trace of described display panels;
2nd GOA circuit, is arranged on the opposite side of described display panels, for driving the second sweep trace of described display panels; And
Detection signal input circuit, for generating the drive singal of described first sweep trace, described second sweep trace and data line;
Wherein said detection signal input circuit generates the drive singal of described first sweep trace by the first order, and described detection signal input circuit generates the drive singal of described second sweep trace by the second order; The order of described first order and described second order is contrary.
2. detection driving circuit according to claim 1, is characterized in that,
Described first sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the even number line of described display panels; Or
Described first sweep trace is the sweep trace of the pixel cell of the even number line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels.
3. detection driving circuit according to claim 1, is characterized in that,
When described first order is forward scan order, when described second order is reverse scan order, described detection signal input circuit generates the drive singal of described first sweep trace by described forward scan order, and described detection signal input circuit generates the drive singal of described second sweep trace by described reverse scan order;
When described first order is reverse scan order, when described second order is for forward scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described reverse scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described forward scan order.
4. a detection drive unit, is characterized in that, comprising:
Detect driving circuit, comprising:
One GOA circuit, is arranged on the side of described display panels, for driving the first sweep trace of described display panels;
2nd GOA circuit, is arranged on the opposite side of described display panels, for driving the second sweep trace of described display panels; And
Detection signal input circuit, for generating the drive singal of described first sweep trace, described second sweep trace and data line;
Wherein said detection signal input circuit generates the drive singal of described first sweep trace by the first order, and described detection signal input circuit generates the drive singal of described second sweep trace by the second order; The order of described first order and described second order is contrary; And
Picture detection module, after detecting the signal of image frame, detects the picture show uniformity of described display panels for inputting a frame when described detection signal input circuit.
5. detection drive unit according to claim 4, is characterized in that,
Described first sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the even number line of described display panels; Or
Described first sweep trace is the sweep trace of the pixel cell of the even number line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels.
6. detection drive unit according to claim 4, is characterized in that,
When described first order is forward scan order, when described second order is reverse scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described forward scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described reverse scan order;
When described first order is reverse scan order, when described second order is for forward scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described reverse scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described forward scan order.
7. use and detect drive unit carries out a picture display detection detection method to display panels, wherein said detection drive unit comprises:
Detect driving circuit, comprising:
One GOA circuit, is arranged on the side of described display panels, for driving the first sweep trace of described display panels;
2nd GOA circuit, is arranged on the opposite side of described display panels, for driving the second sweep trace of described display panels; And
Detection signal input circuit, for generating the drive singal of described first sweep trace, described second sweep trace and data line; And
Picture detection module, after detecting the signal of image frame, detects the picture show uniformity of described display panels for inputting a frame when described detection signal input circuit; It is characterized in that, described detection method comprises:
Described detection signal input circuit generates the drive singal of described first sweep trace by the first order, and by a described GOA circuit transmission to described first sweep trace; Described detection signal input circuit generates the drive singal of described second sweep trace by the second order, and by described 2nd GOA circuit transmission to described second sweep trace; And described detection signal input circuit generates the drive singal of data line and transfers to described data line; The order of wherein said first order and described second order is contrary; And
Described picture detection module detects the picture show uniformity of described display panels.
8. detection method according to claim 7, is characterized in that, the step that described picture detection module detects the picture show uniformity of described display panels is specially:
Described picture detection module, according to the electricity superposition value of memory capacitance corresponding to two adjacent row pixel cells, detects the picture show uniformity of described display panels.
9. detection method according to claim 7, is characterized in that,
Described first sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the even number line of described display panels; Or
Described first sweep trace is the sweep trace of the pixel cell of the even number line of described display panels, and described second sweep trace is the sweep trace of the pixel cell of the odd-numbered line of described display panels.
10. detection method according to claim 7, is characterized in that,
When described first order is forward scan order, when described second order is reverse scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described forward scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described reverse scan order;
When described first order is reverse scan order, when described second order is for forward scan order, when described detection signal input circuit generates the drive singal of described first sweep trace by described reverse scan order, described detection signal input circuit generates the drive singal of described second sweep trace by described forward scan order.
CN201510486282.5A 2015-08-10 2015-08-10 Detect drive circuit, detection drive device and detection method CN105047115B (en)

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CN104795044A (en) * 2015-05-12 2015-07-22 京东方科技集团股份有限公司 Driving device, driving method and display device

Cited By (4)

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Publication number Priority date Publication date Assignee Title
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
CN106782415A (en) * 2017-02-27 2017-05-31 武汉华星光电技术有限公司 A kind of driving method of liquid crystal display panel
US10223989B2 (en) 2017-02-27 2019-03-05 Wuhan China Star Optoelectronics Technology Co., Ltd Driving method of liquid crystal display panel
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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