CN104766565A - Drive method and device and display device - Google Patents
Drive method and device and display device Download PDFInfo
- Publication number
- CN104766565A CN104766565A CN201510226692.6A CN201510226692A CN104766565A CN 104766565 A CN104766565 A CN 104766565A CN 201510226692 A CN201510226692 A CN 201510226692A CN 104766565 A CN104766565 A CN 104766565A
- Authority
- CN
- China
- Prior art keywords
- data voltage
- waveform
- slope
- pixel cell
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a drive method and device and a display device. The drive method comprises the steps that a pixel unit outputs a first data voltage provided with a first waveform; a second data voltage is detected and is a data voltage actually received by the pixel unit; a third data voltage is output to the pixel unit according to the second data voltage, and then the data voltage actually received by the pixel unit is provided with the first waveform. According to the technical scheme, the problem that charging is delayed due to the load of a large and high-definition display panel and resistance capacitance delay is solved, the uniformity of the display panel is guaranteed, and the picture quality of the display panel is improved.
Description
Technical field
The present invention relates to display technique field, particularly relate to a kind of driving method and device, display device.
Background technology
The size of existing display panel is done larger and larger, resolution is more and more higher, causes the load of display panel increasing, and RC delay (RC delay) is more and more longer, cause the pixel cell duration of charging of far-end shorter and shorter, finally make the pixel cell undercharge of far-end.Fig. 1 is the distribution schematic diagram of display panel GTG height in prior art, and Fig. 2 is the working timing figure of display panel shown in Fig. 1.As depicted in figs. 1 and 2, due to the pixel cell undercharge of far-end, the data voltage of far-end is less than the data voltage of near-end, be exactly that the gray-scale intensity of near-end is brighter on the direct impact of display effect, the GTG aspect ratio of far-end is darker, thus reduce the homogeneity of display panel, affect the picture quality of display panel.
Summary of the invention
For solving the problem, the invention provides a kind of driving method and device, display device, load and RC delay for solving display panel in prior art cause the gray-scale intensity of display panel near-end brighter, the problem that the GTG aspect ratio of far-end is darker.
For this reason, the invention provides a kind of driving method, comprising:
Input the first data voltage to pixel cell, described first data voltage has the first waveform;
Detect the second data voltage, described second data voltage is the data voltage of the actual reception of described pixel cell;
According to described second data voltage to described pixel cell input the 3rd data voltage, to make the data voltage of the actual reception of described pixel cell, there is the first waveform.
Optionally, described second data voltage has the second waveform, and described 3rd data voltage has the 3rd waveform;
The described step inputting the 3rd data voltage to described pixel cell according to described second data voltage comprises:
Calculate the first slope of described second waveform;
Calculate the second slope of described 3rd waveform according to described first slope, described second slope and described first slope sum are zero;
Described 3rd data voltage is exported according to described second slope.
Optionally, described 3rd waveform in a frame picture display time linearly.
Optionally, the 3rd data voltage is exported by operation amplifier function to described pixel cell.
The present invention also provides a kind of drive unit, comprises the first output unit, detecting unit and the second output unit;
Described first output unit is used for inputting the first data voltage to pixel cell, and described first data voltage has the first waveform;
Described detecting unit is for detecting the second data voltage, and described second data voltage is the data voltage of the actual reception of described pixel cell;
Described second output unit is used for inputting the 3rd data voltage according to described second data voltage to described pixel cell, has the first waveform to make the data voltage of the actual reception of described pixel cell.
Optionally, described second data voltage has the second waveform, and described 3rd data voltage has the 3rd waveform, and described second output unit comprises the first computing module, the second computing module and the first output module;
Described first computing module is for calculating the first slope of described second waveform;
Described second computing module is used for the second slope calculating described 3rd waveform according to described first slope, and described second slope and described first slope sum are zero;
Described first output module is used for exporting described 3rd data voltage according to described second slope.
Optionally, described 3rd waveform in a frame picture display time linearly.
Optionally, described second output unit comprises operation amplifier unit, and described operation amplifier unit exports the 3rd data voltage by operation amplifier function to described pixel cell.
The present invention also provides a kind of display device, comprises above-mentioned arbitrary drive unit.
The present invention has following beneficial effect:
In driving method provided by the invention and device thereof, display device, described driving method comprises: pixel cell exports the first data voltage, and described first data voltage has the first waveform; Detect the second data voltage, described second data voltage is the data voltage of the actual reception of described pixel cell; Export the 3rd data voltage according to described second data voltage to described pixel cell, to make the data voltage of the actual reception of described pixel cell, there is the first waveform.Technique scheme solves the charging delay problem that the load of large scale and high-resolution display panel and RC delay cause, and ensure that the homogeneity of display panel, improves the picture quality of display panel.
Accompanying drawing explanation
Fig. 1 is the distribution schematic diagram of display panel GTG height in prior art;
Fig. 2 is the working timing figure of display panel shown in Fig. 1;
The process flow diagram of a kind of driving method that Fig. 3 provides for the embodiment of the present invention one;
Fig. 4 is the oscillogram of the first data voltage in embodiment one;
Fig. 5 is the oscillogram of the second data voltage in embodiment one;
Fig. 6 is the oscillogram of the 3rd data voltage in embodiment one;
Fig. 7 is the oscillogram of the 4th data voltage in embodiment one.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with accompanying drawing, driving method provided by the invention and device thereof, display device are described in detail.
The process flow diagram of a kind of driving method that Fig. 3 provides for the embodiment of the present invention one.As shown in Figure 3, described driving method comprises:
Step 3001, export the first data voltage to pixel cell, described first data voltage has the first waveform.
Under normal circumstances, the data voltage that source electrode driver exports is square wave.Fig. 4 is the oscillogram of the first data voltage in embodiment one, and as shown in Figure 4, the first waveform of described first data voltage is square wave.The present embodiment, mainly by adjusting the output voltage of source electrode driver, making the data voltage exported be the linear voltage with default slope, therefore needing the data voltage by the actual reception of detection display panel after normal input data voltage.
Step 3002, detect the second data voltage, described second data voltage is the data voltage of the actual reception of described pixel cell.
Exporting the correct slope of data voltage for obtaining, needing to obtain the feedback that source electrode driver exports described display panel after described first data voltage.Therefore, need to detect the data voltage of the actual reception of described pixel cell, to obtain the waveform of described second data voltage.
Step 3003, export the 3rd data voltage according to described second data voltage to described pixel cell, to make the 4th data voltage of the actual reception of described pixel cell, there is the first waveform.
In the present embodiment, described second data voltage has the second waveform, and described 3rd data voltage has the 3rd waveform.Described step 3003 comprises: the first slope calculating described second waveform, the second slope of described 3rd waveform is calculated according to described first slope, described second slope and described first slope sum are zero, export described 3rd data voltage according to described second slope.Specifically, for exporting the 3rd waveform of described 3rd data voltage, the first slope of the second waveform obtaining described second data voltage is needed.Fig. 5 is the oscillogram of the second data voltage in embodiment one, and Fig. 6 is the oscillogram of the 3rd data voltage in embodiment one, and Fig. 7 is the oscillogram of the 4th data voltage in embodiment one.As illustrated in figs. 5-7, the angle setting the second data voltage and dotted line is A, and therefore described first slope is tanA.Described 3rd data voltage that we need should be π-A with the angle of dotted line, and therefore described second slope is tan (π-A).Optionally, described 3rd waveform in a frame picture display time linearly.Due to tanA+tan (π-A)=0, as long as therefore we set described second slope and described first slope sum is zero described 3rd data voltage that just can obtain that we require, thus make the data voltage of the actual acquisition of display panel steady, solve the inhomogenous problem of gray-scale intensity of display panel.
Optionally, the 3rd data voltage is exported by operation amplifier function to described pixel cell.Source electrode driver has the operation amplifier functional module jointly formed in conjunction with special Coupling circuit and feedback network.By described operation amplifier functional module, source electrode driver according to described second data voltage by adding, subtracting or the mathematical operation such as differential, integration exports the 3rd data voltage to described pixel cell.
In the driving method that the present embodiment provides, described driving method comprises: pixel cell exports the first data voltage, and described first data voltage has the first waveform; Detect the second data voltage, described second data voltage is the data voltage of the actual reception of described pixel cell; Export the 3rd data voltage according to described second data voltage to described pixel cell, to make the data voltage of the actual reception of described pixel cell, there is the first waveform.Technique scheme solves the charging delay problem that the load of large scale and high-resolution display panel and RC delay cause, and ensure that the homogeneity of display panel, improves the picture quality of display panel.
Embodiment two
The present embodiment provides a kind of drive unit, comprises the first output unit, detecting unit and the second output unit.Described first output unit is used for exporting the first data voltage to pixel cell, described first data voltage has the first waveform, described detecting unit is for detecting the second data voltage, described second data voltage is the data voltage of the actual reception of described pixel cell, described second output unit is used for exporting the 3rd data voltage according to described second data voltage to described pixel cell, to make the 4th data voltage of the actual reception of described pixel cell, there is the first waveform, thus solve the charging delay problem that the load of large scale and high-resolution display panel and RC delay cause, ensure that the homogeneity of display panel, improve the picture quality of display panel.
See Fig. 4, the data voltage that described first output unit exports is square wave.The present embodiment, mainly by adjusting the output voltage of source electrode driver, making the data voltage exported be the linear voltage with default slope, therefore needing the data voltage by the actual reception of detection display panel after normal input data voltage.Exporting the correct slope of data voltage for obtaining, needing to obtain the feedback that source electrode driver exports described display panel after described first data voltage.Therefore, the data voltage of described detecting unit to the actual reception of described pixel cell detects, to obtain the waveform of described second data voltage.
In the present embodiment, described second data voltage has the second waveform, and described 3rd data voltage has the 3rd waveform, and described second output unit comprises the first computing module, the second computing module and the first output module.Described first computing module is for calculating the first slope of described second waveform, described second computing module is used for the second slope calculating described 3rd waveform according to described first slope, described second slope and described first slope sum are zero, and described first output module is used for exporting described 3rd data voltage according to described second slope.
Specifically, for exporting the 3rd waveform of described 3rd data voltage, the first slope of the second waveform obtaining described second data voltage is needed.See Fig. 5-7, the angle setting the second data voltage and dotted line is A, and therefore described first computing module can calculate described first slope is tanA.Described 3rd data voltage that we need should be π-A with the angle of dotted line, and therefore described second slope is tan (π-A).Optionally, described 3rd waveform in a frame picture display time linearly.Due to tanA+tan (π-A)=0, therefore according to described second slope and described first slope sum for the second computing module described in zero just can calculate described second slope.Finally, described first output module exports described 3rd data voltage according to described second slope, thus makes the data voltage of the actual acquisition of display panel steady, solves the inhomogenous problem of gray-scale intensity of display panel.
Optionally, described second output unit comprises operation amplifier unit, and described operation amplifier unit exports the 3rd data voltage by operation amplifier function to described pixel cell.Described operation amplifier unit is have the operation amplifier functional module jointly formed in conjunction with special Coupling circuit and feedback network.Described operation amplifier unit according to described second data voltage by adding, subtracting or the mathematical operation such as differential, integration exports the 3rd data voltage to described pixel cell.
In the drive unit that the present embodiment provides, described first output unit is used for exporting the first data voltage to pixel cell, described first data voltage has the first waveform, described detecting unit is for detecting the second data voltage, described second data voltage is the data voltage of the actual reception of described pixel cell, described second output unit is used for exporting the 3rd data voltage according to described second data voltage to described pixel cell, has the first waveform to make the 4th data voltage of the actual reception of described pixel cell.Technique scheme solves the charging delay problem that the load of large scale and high-resolution display panel and RC delay cause, and ensure that the homogeneity of display panel, improves the picture quality of display panel.
Embodiment three
The present embodiment provides a kind of display device, comprises the drive unit that embodiment two provides, and particular content can refer to the description of above-described embodiment two, repeats no more herein.
In the display device that the present embodiment provides, described first output unit is used for exporting the first data voltage to pixel cell, described first data voltage has the first waveform, described detecting unit is for detecting the second data voltage, described second data voltage is the data voltage of the actual reception of described pixel cell, described second output unit is used for exporting the 3rd data voltage according to described second data voltage to described pixel cell, has the first waveform to make the 4th data voltage of the actual reception of described pixel cell.Technique scheme solves the charging delay problem that the load of large scale and high-resolution display panel and RC delay cause, and ensure that the homogeneity of display panel, improves the picture quality of display panel.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (9)
1. a driving method, is characterized in that, comprising:
Input the first data voltage to pixel cell, described first data voltage has the first waveform;
Detect the second data voltage, described second data voltage is the data voltage of the actual reception of described pixel cell;
According to described second data voltage to described pixel cell input the 3rd data voltage, to make the 4th data voltage of the actual reception of described pixel cell, there is the first waveform.
2. driving method according to claim 1, is characterized in that, described second data voltage has the second waveform, and described 3rd data voltage has the 3rd waveform;
The described step exporting the 3rd data voltage to described pixel cell according to described second data voltage comprises:
Calculate the first slope of described second waveform;
Calculate the second slope of described 3rd waveform according to described first slope, described second slope and described first slope sum are zero;
Described 3rd data voltage is exported according to described second slope.
3. driving method according to claim 2, is characterized in that, described 3rd waveform in a frame picture display time linearly.
4. driving method according to claim 1, is characterized in that, by operation amplifier function to described pixel cell input the 3rd data voltage.
5. a drive unit, is characterized in that, comprises the first output unit, detecting unit and the second output unit;
Described first output unit is used for inputting the first data voltage to pixel cell, and described first data voltage has the first waveform;
Described detecting unit is for detecting the second data voltage, and described second data voltage is the data voltage of the actual reception of described pixel cell;
Described second output unit is used for inputting the 3rd data voltage according to described second data voltage to described pixel cell, has the first waveform to make the 4th data voltage of the actual reception of described pixel cell.
6. drive unit according to claim 5, it is characterized in that, described second data voltage has the second waveform, and described 3rd data voltage has the 3rd waveform, and described second output unit comprises the first computing module, the second computing module and the first output module;
Described first computing module is for calculating the first slope of described second waveform;
Described second computing module is used for the second slope calculating described 3rd waveform according to described first slope, and described second slope and described first slope sum are zero;
Described first output module is used for exporting described 3rd data voltage according to described second slope.
7. drive unit according to claim 6, is characterized in that, described 3rd waveform in a frame picture display time linearly.
8. drive unit according to claim 5, is characterized in that, described second output unit comprises operation amplifier unit, and described operation amplifier unit exports the 3rd data voltage by operation amplifier function to described pixel cell.
9. a display device, is characterized in that, comprises the arbitrary described drive unit of claim 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510226692.6A CN104766565B (en) | 2015-05-06 | 2015-05-06 | A kind of driving method and its device, display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510226692.6A CN104766565B (en) | 2015-05-06 | 2015-05-06 | A kind of driving method and its device, display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104766565A true CN104766565A (en) | 2015-07-08 |
| CN104766565B CN104766565B (en) | 2017-07-04 |
Family
ID=53648355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510226692.6A Expired - Fee Related CN104766565B (en) | 2015-05-06 | 2015-05-06 | A kind of driving method and its device, display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104766565B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070040826A1 (en) * | 2005-08-19 | 2007-02-22 | Samsung Electronics Co., Ltd | Electronic apparatus and control method thereof |
| CN101398550A (en) * | 2007-09-26 | 2009-04-01 | 北京京东方光电科技有限公司 | Method and device for avoiding image retention |
| CN102708820A (en) * | 2012-05-14 | 2012-10-03 | 京东方科技集团股份有限公司 | Driving method and device for liquid crystal display panel and liquid crystal display |
-
2015
- 2015-05-06 CN CN201510226692.6A patent/CN104766565B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070040826A1 (en) * | 2005-08-19 | 2007-02-22 | Samsung Electronics Co., Ltd | Electronic apparatus and control method thereof |
| CN101398550A (en) * | 2007-09-26 | 2009-04-01 | 北京京东方光电科技有限公司 | Method and device for avoiding image retention |
| CN102708820A (en) * | 2012-05-14 | 2012-10-03 | 京东方科技集团股份有限公司 | Driving method and device for liquid crystal display panel and liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104766565B (en) | 2017-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104700768B (en) | A kind of common electric voltage compensation circuit, its compensation method and display device | |
| KR101576334B1 (en) | Common electrode voltage compensating method, apparatus and timing controller | |
| CN104157251B (en) | A kind of gamma voltage control method, gamma voltage setting device and display unit | |
| CN105206238A (en) | Gate drive circuit and display device using same | |
| CN104460082A (en) | Liquid crystal display with touch function and touch detection method of liquid crystal display | |
| CN109215581A (en) | A kind of compensation method of display panel, compensation device and display device | |
| CN101542581A (en) | Liquid crystal display apparatus and liquid crystal panel driving method | |
| CN106067294B (en) | A kind of driving method and driving device of liquid crystal display | |
| CN108665861A (en) | A kind of display drive apparatus, display drive method and display device | |
| CN106782397A (en) | The compensation method of display panel and its common electric voltage, display device | |
| CN104269148A (en) | Liquid crystal driving circuit, liquid crystal driving method and liquid crystal display device | |
| CN105161047A (en) | Display driving method and display driving circuit of display panel and display device | |
| CN105118465A (en) | GOA circuit and driving method thereof, and liquid crystal displayer | |
| CN104503173A (en) | Touch display panel, touch display device and control method | |
| KR101341904B1 (en) | Driving circuit for liquid crystal display device and method for driving the same | |
| CN104376829A (en) | Display substrate driving device and method and display device | |
| CN104810001A (en) | Drive circuit and a drive method of liquid crystal display panel | |
| CN106228943A (en) | Image gray-scale level method of adjustment and adjusting apparatus | |
| CN104537990A (en) | Method and device for improving display image uniformity | |
| CN105185333A (en) | Grid driving circuit of liquid crystal display device | |
| CN104156106A (en) | Touch device and driving method thereof | |
| CN105225651A (en) | Vision-control device, power circuit, display device and vision-control method | |
| CN101577095A (en) | Liquid crystal display and driving method thereof | |
| CN105118464A (en) | GOA circuit and driving method thereof, and liquid crystal displayer | |
| CN104375346A (en) | Liquid crystal display panel and driving method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170704 Termination date: 20210506 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |