CN109346023A - A kind of driving device and driving method of display device - Google Patents
A kind of driving device and driving method of display device Download PDFInfo
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- CN109346023A CN109346023A CN201811522720.9A CN201811522720A CN109346023A CN 109346023 A CN109346023 A CN 109346023A CN 201811522720 A CN201811522720 A CN 201811522720A CN 109346023 A CN109346023 A CN 109346023A
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- scan line
- voltage
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- scanning
- display device
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the present invention belongs to field of display technology, provide the driving device and driving method of a kind of display device, wherein, the display device includes N scan line and the scan drive circuit that connect with the N scan line, the scan drive circuit includes: the preset reference voltage for confirming Nth row scan line for successively generating scanning voltage, the driving method in scan line；The line number for obtaining current scan line exports scanning voltage according to the line number of current scan line；Wherein, from the scanning voltage output incremented by successively of the 1st horizontal scanning line to Nth row scan line.Using previous horizontal scanning line than the driving design that the scanning signal cut-in voltage of latter horizontal scanning line gradually decreases, the different design of the voltage opened using different line scan signals improves display effect so that same row pixel charging effect is identical.
Description
Technical field
The embodiment of the present invention belongs to field of display technology more particularly to a kind of driving device of display device and driving side
Method.
Background technique
The viewing area of liquid crystal display includes several data lines, and several scan lines and several pixels form, on single data line
The corresponding data-signal of each column pixel is transmitted, cooperation scan line is sequentially opened, and can believe the data for corresponding to each pixel
It number is charged in the pixel.Cooperate the first horizontal scanning line of viewing area 1, intermediate a certain horizontal scanning line m and last line on data line
Scan line n respectively corresponds pixel p ixel 1, pixel m and pixel n charging moment, data-signal D1, Dm, Dn of the position
With the actual conditions of scanning signal G1, Gm, Gn；Since data-signal is in the transmission process of data line 1, data line sheet will receive
The influence of body resistance capacitance load, and RC retardation ratio occurs, this will lead to same row and does not go together pixel while charging, data
Signal can be different, and the pixel far from data-driven IC, and delay degree is more serious, the data letter of 1 charging moment of pixel
Number D1 is almost without postponing, and the data-signal Dn of pixel n charging moment postpones most serious, pixel m charging moment
Data-signal Dm delay degree is before the two；And scanning signal G1, Gm, Gn opening time phase of all row pixels of first row
Together, the case where voltage Vgh1=Vghm=Vghn of unlatching, this just inevitably results in the pixel charging of the column, is different, specifically
There is Vpixel 1 > Vpixel m > Vpixel n, this will make this three pixels that can show difference when same grayscale is shown
Brightness.
Problem set forth above can make whole display in grey menu, the pixel far from data-driven IC
It is darker, to the non-uniform phenomenon of display brightness occur, therefore needs one kind and be able to solve same row pixel charging voltage difference
Method
Summary of the invention
The embodiment of the present invention provides the driving device and driving method of a kind of display device, it is intended to which display is in ash in solution
When rank picture, the pixel far from data-driven IC is darker, to the problem of display brightness non-uniform phenomenon occur.
First aspect of the embodiment of the present invention provides a kind of driving method of display device, and the display device includes that N item is swept
The scan drive circuit retouching line and connecting with the N scan line, the scan drive circuit are used for successively in scan line
Scanning voltage is generated, the driving method includes:
Confirm the preset reference voltage of Nth row scan line；
The line number for obtaining current scan line, according to the line number of current scan line and the preset reference voltage, by described
Current scan line exports scanning voltage；
Wherein, the scanning voltage exported from the 1st horizontal scanning line to Nth row scan line is incremented by successively.
In one embodiment, the voltage difference of the scanning voltage between adjacent rows scan line is identical.
In one embodiment, the preset reference voltage of the confirmation Nth row scan line, comprising:
Scanning voltage incremented by successively is exported to Nth row scan line；
When the pixel voltage connecting with the Nth row scan line reaches presetted pixel voltage, Current Scan voltage is read
As preset reference voltage.
In one embodiment, the charging time of the scanning voltage of the N scan line output is identical.
In one embodiment, the scanning voltage of the output of scan line described in any row is Vgh- (n-m) Δ V, wherein
Vgh is the preset reference voltage of Nth row scan line, and n is total line number of scan line, and m is the line number of current scan line.
Second aspect of the embodiment of the present invention also provides a kind of driving device of display device, and the display device includes N item
Scan line and the scan drive circuit connecting with the N scan line, the scan drive circuit are used for successively in scan line
Upper generation scanning voltage, the driving device include:
Detection unit is configured to the preset reference voltage of confirmation Nth row scan line；
Voltage regulation unit is configured to obtain the line number of current scan line, according to the line number of current scan line and described pre-
If reference voltage, scanning voltage is exported by the current scan line；
Wherein, the scanning voltage exported from the 1st horizontal scanning line to Nth row scan line is incremented by successively.
In one embodiment, the voltage difference of the scanning voltage between adjacent two horizontal scanning lines is identical.
In one embodiment, the detection unit includes:
Output unit is configured to export scanning voltage incremented by successively to Nth row scan line；
Reading unit is configured to when the pixel voltage connecting with the Nth row scan line reaches presetted pixel voltage, is read
Take Current Scan voltage as preset reference voltage.
In one embodiment, the charging time of the scanning voltage of the N scan line output is identical.
In one embodiment, the scanning voltage of the output of scan line described in any row is Vgh- (n-m) Δ V, wherein
Vgh is the preset reference voltage of Nth row scan line, and n is total line number of scan line, and m is the line number of current scan line.
The embodiment of the present invention by the driving device of display device confirm Nth row scan line preset reference voltage,
From the scanning voltage output incremented by successively of the 1st horizontal scanning line to Nth row scan line, swept using previous horizontal scanning line than rear a line
The driving design that the scanning signal cut-in voltage of line gradually decreases is retouched, the voltage opened using different line scan signals is different to be set
Meter improves display effect so that same row pixel charging effect is identical.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the flow chart of the driving method for the display device that one embodiment of the present of invention provides；
Fig. 2 be another embodiment of the present invention provides display device driving method flow chart；
Fig. 3 is the structural schematic diagram for the display device that one embodiment of the present of invention provides；
Fig. 4 is the voltage oscillogram of the scanning voltage for the display device that one embodiment of the present of invention provides；
Fig. 5 is the voltage oscillogram of the pixel unit for the display device that one embodiment of the present of invention provides.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention are explicitly described, it is clear that described embodiment is the present invention one
The embodiment divided, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, should fall within the scope of the present invention.
Description and claims of this specification and term " includes " and their any deformations in above-mentioned attached drawing, meaning
Figure, which is to cover, non-exclusive includes.Such as process, method or system comprising a series of steps or units, product or equipment do not have
It is defined in listed step or unit, but optionally further comprising the step of not listing or unit, or optionally also wrap
Include the other step or units intrinsic for these process, methods, product or equipment.In addition, term " first ", " second " and
" third " etc. is for distinguishing different objects, not for description particular order.
As shown in Figure 1, one embodiment of the present of invention provides a kind of driving method of display device, which is characterized in that aobvious
Showing device includes N scan line and the scan drive circuit connecting with N scan line 10, and scan drive circuit 10 is for successively
Scanning voltage is generated in scan line, the driving method of the display device includes:
In S100, the preset reference voltage of Nth row scan line is confirmed.
In the present embodiment, it in order to guarantee the farthest pixel unit charging of range sweep driving circuit 10 sufficiently, keeps filling
The electric time is constant, and different scanning voltages is exported by detection unit, until the pixel unit charging connecting with Nth row scan line
It completes.Since the brightness further away from scan drive circuit 10, pixel unit will be lower and lower, if range sweep driving circuit
10 farthest pixel units can guarantee charging sufficiently, then can guarantee that the pixel unit charging of all rows is abundant.
In s 200, the line number for obtaining current scan line passes through according to the line number of current scan line and preset reference voltage
Current scan line exports scanning voltage.
In the present embodiment, for the pixel unit that do not go together, need to export the scanning voltage for the scan line that do not go together, therefore
When scan drive circuit 10 exports scanning voltage, need first to confirm the line number of current scan line, according to the row of current scan line
Number exports scanning voltage.In practical applications, data drive circuit 20 is to pixel unit input image data, turntable driving electricity
Road 10 exports scanning voltage, to complete to charge to pixel unit, the voltage value of pixel unit is made to reach presetted pixel voltage.
Wherein, the scanning voltage exported from the 1st horizontal scanning line to Nth row scan line is incremented by successively.
In one embodiment, the voltage difference of the scanning voltage between adjacent rows scan line is identical.In practical application
In, the distance between pixel unit of adjacent rows is roughly the same, results in prolonging between the pixel unit of adjacent rows in this way
Slow effect is roughly the same.From the 1st horizontal scanning line to Nth row scan line, according to the scanning voltage that identical voltage difference is sequentially incremented by,
Delay effect can be eliminated.The voltage difference of scanning voltage in the application between adjacent rows scan line can by simulation or
Practical adjustment.In concrete application, which can be calculated by simulation, can also to show by changing voltage difference
Brightness is identical in same vertical line under grey menu obtains for device.
As shown in Fig. 2, in one embodiment, step S300 is specifically included:
In S301, scanning voltage incremented by successively is exported to Nth row scan line.
In S302, when the pixel voltage connecting with Nth row scan line reaches presetted pixel voltage, Current Scan is read
Voltage is as preset reference voltage as preset reference voltage.
In practical applications, the output sequence of scanning voltage is the 1st row to Nth row, and in the embodiment of the present application, in order to
The delay effect generated between each row pixel unit is eliminated, the scanning voltage from the 1st horizontal scanning line to Nth row scan line is successively passed
Increase output.In a practical situation, the delay effect of the pixel unit of Nth row is the most serious, in the present embodiment, first guarantees N
The scanning voltage of capable scan line output can eliminate the delay effect of the pixel unit of Nth row, to the output of Nth row scan line according to
Secondary incremental scanning voltage；When the pixel voltage connecting with Nth row scan line reaches presetted pixel voltage, Current Scan is read
Voltage is as preset reference voltage as preset reference voltage.
Specifically, the scanning voltage of any horizontal scanning line output is Vgh- (n-m) Δ V, wherein Vgh is Nth row scanning
The preset reference voltage of line, n be scan line total line number, m be current scan line line number, Δ V be adjacent rows scan line it
Between scanning voltage voltage difference.Based on preset reference voltage, using Δ V as difference, swept from the 1st horizontal scanning line to Nth row
It retouches line and is sequentially output different scanning voltages.
It should be noted that the charging time of the scanning voltage of multi-strip scanning line output is identical, only change scan line
The size of output voltage values makes the charging effect of the pixel unit where each scan line identical with this, and control is easy, does not need multiple
Miscellaneous control flow or step.
One embodiment of the present of invention provides a kind of driving device of display device, display device include N scan line with
And the scan drive circuit 10 being connect with N scan line, scan drive circuit 10 in scan line for successively generating scanning electricity
Pressure, driving device includes: detection unit, voltage regulation unit and control unit.
Detection unit is configured to the preset reference voltage of confirmation Nth row scan line.
Voltage regulation unit is configured to obtain the line number of current scan line, according to the line number of current scan line and default base
Quasi- voltage exports scanning voltage by current scan line.
Wherein, from the scanning voltage output incremented by successively of the 1st horizontal scanning line to Nth row scan line.
In one embodiment, the voltage difference of the scanning voltage between adjacent two horizontal scanning lines is identical.
In one embodiment, detection unit includes: output unit, is configured to export to Nth row scan line and successively pass
The scanning voltage of increasing；Reading unit is configured to when the pixel voltage connecting with Nth row scan line reaches presetted pixel voltage,
Current Scan voltage is read as preset reference voltage.
In one embodiment, the charging time of the scanning voltage of multi-strip scanning line output is identical.
In one embodiment, the scanning voltage of any horizontal scanning line output is Vgh- (n-m) Δ V, wherein Vgh is
The preset reference voltage of Nth row scan line, n are total line number of scan line, and m is the line number of current scan line.
Fig. 3 is the structural schematic diagram for the display device that one embodiment of the application provides, and Fig. 4 is the reality of the application
The voltage oscillogram of the scanning voltage of the display device of example offer is applied, Fig. 5 is the display dress that one embodiment of the application provides
The voltage oscillogram for the pixel unit set.Cooperate on data line 1 the first horizontal scanning line of viewing area 1, intermediate a certain horizontal scanning line m and
When last line scan line n respectively corresponds pixel unit pixel1, pixel unit pixel m and pixel unit pixel n charging
It carves, data-signal D1, Dm, Dn of the position and the actual conditions of scanning signal G1, Gm, Gn；In embodiment, it uses previous
Horizontal scanning line than the scanning signal cut-in voltage of latter horizontal scanning line gradually decrease Δ V driving design, i.e., first row last
When scanning signal cut-in voltage is Vgh when row pixel p ixel n charges, scanning signal cut-in voltage is when pixel m charges
Scanning signal cut-in voltage is Vgh- (n-1) Δ V when Vgh- (n-m) Δ V, pixel 1 charges, so far from data-driven
The pixel of IC, scanning signal cut-in voltage is bigger, and opposite, the pixel far from data-driven IC, and delay effect is tighter
Weight, and then different degrees of compensation is carried out to the delay effect by different cut-in voltages, so that it may so that pixel unit pixel
1, the corresponding charging voltage Vpixel 1=Vpixel m=Vpixel of pixel unit pixel m and pixel unit pixel n
N improves display effect so that same row pixel charging effect is identical.
In a particular application, display panel can be any type of display panel, such as based on TFT-LCD (Thin
Film Transistor Liquid Crystal Display, Thin Film Transistor-LCD) technology LCD display
Plate, is based on OLED at the liquid crystal display panel based on LCD (Liquid Crystal Display, liquid crystal display device) technology
The Organic Electricity laser display panel of (Organic Electroluminesence Display, Organic Electricity laser display) technology,
Quantum dot light emitting based on QLED (Quantum Dot Light Emitting Diodes, light emitting diode with quantum dots) technology
Diode display panel or curved face display panel etc..
In a particular application, source drive module, which can be arbitrary, carries out data-driven with the pixel to display panel
The random devices or circuit of function, for example, source driving chip (Source Driver IC) or film source driving chip (S-
COF, Source-Chip on Film) etc..
Module in all embodiments of the invention can pass through universal integrated circuit, such as CPU (Central
Processing Unit, central processing unit), or pass through ASIC (Application Specific Integrated
Circuit, specific integrated circuit) it realizes.
The steps in the embodiment of the present invention can be sequentially adjusted, merged and deleted according to actual needs.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of driving method of display device, which is characterized in that the display device include N scan line and with the N
The scan drive circuit of scan line connection, the scan drive circuit in scan line for successively generating scanning voltage, institute
Stating driving method includes:
Confirm the preset reference voltage of Nth row scan line；
The line number for obtaining current scan line, according to the line number of current scan line and the preset reference voltage, by described current
Scan line exports scanning voltage；
Wherein, the scanning voltage exported from the 1st horizontal scanning line to Nth row scan line is incremented by successively.
2. the driving method of display device as described in claim 1, which is characterized in that the scanning between adjacent rows scan line
The voltage difference of voltage is identical.
3. the driving method of display device as described in claim 1, which is characterized in that described to confirm the pre- of Nth row scan line
If reference voltage, comprising:
Scanning voltage incremented by successively is exported to Nth row scan line；
When the pixel voltage connecting with the Nth row scan line reaches presetted pixel voltage, the conduct of Current Scan voltage is read
Preset reference voltage.
4. the driving method of display device as described in claim 1, which is characterized in that the scanning of the N scan line output
The charging time of voltage is identical.
5. the driving method of display device as described in claim 1, which is characterized in that the output of scan line described in any row is swept
Retouching voltage is Vgh- (n-m) Δ V, wherein Vgh is the preset reference voltage of Nth row scan line, and n is total line number of scan line, m
For the line number of current scan line.
6. a kind of driving device of display device, the display device includes N scan line and connect with the N scan line
Scan drive circuit, the scan drive circuit in scan line for successively generating scanning voltage, the driving device packet
It includes:
Detection unit is configured to the preset reference voltage of confirmation Nth row scan line；
Voltage regulation unit is configured to obtain the line number of current scan line, according to the line number of current scan line and the default base
Quasi- voltage exports scanning voltage by the current scan line；
Wherein, from the scanning voltage output incremented by successively of the 1st horizontal scanning line to Nth row scan line.
7. the driving device of display device as claimed in claim 6, which is characterized in that the scanning electricity between adjacent two horizontal scanning lines
The voltage difference of pressure is identical.
8. the driving device of display device as claimed in claim 6, which is characterized in that the detection unit includes:
Output unit is configured to export scanning voltage incremented by successively to Nth row scan line；
Reading unit is configured to when the pixel voltage connecting with the Nth row scan line reaches presetted pixel voltage, and reading is worked as
Preceding scanning voltage is as preset reference voltage.
9. the driving device of display device as claimed in claim 6, which is characterized in that the scanning of the N scan line output
The charging time of voltage is identical.
10. the driving device of display device as claimed in claim 6, which is characterized in that the output of scan line described in any row
Scanning voltage is Vgh- (n-m) Δ V, wherein Vgh is the preset reference voltage of Nth row scan line, and n is total line number of scan line,
M is the line number of current scan line.
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| CN201811522720.9A CN109346023A (en) | 2018-12-13 | 2018-12-13 | A kind of driving device and driving method of display device |
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| CN201811522720.9A CN109346023A (en) | 2018-12-13 | 2018-12-13 | A kind of driving device and driving method of display device |
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| CN111816110B (en) * | 2020-07-06 | 2024-02-09 | 深圳市华星光电半导体显示技术有限公司 | Driving method of display panel |
| CN111883081A (en) * | 2020-07-28 | 2020-11-03 | 重庆惠科金渝光电科技有限公司 | Display driving circuit and display panel |
| US11308913B2 (en) | 2020-07-28 | 2022-04-19 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Display driving circuit and display panel |
| CN112419993A (en) * | 2020-11-28 | 2021-02-26 | 广州易博士管理咨询有限公司 | Low-power-consumption low-frequency driving method and system using time-sharing driving |
| CN113516938A (en) * | 2021-06-23 | 2021-10-19 | 惠科股份有限公司 | Driving circuit and driving method of display panel and display device |
| CN113516938B (en) * | 2021-06-23 | 2024-03-26 | 惠科股份有限公司 | Driving circuit and driving method of display panel and display device |
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