CN108986762A - Display device and voltage adjusting method thereof - Google Patents
Display device and voltage adjusting method thereof Download PDFInfo
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- CN108986762A CN108986762A CN201811056966.1A CN201811056966A CN108986762A CN 108986762 A CN108986762 A CN 108986762A CN 201811056966 A CN201811056966 A CN 201811056966A CN 108986762 A CN108986762 A CN 108986762A
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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
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Abstract
The application provides a display device and a voltage adjusting method thereof. The display device includes: a display panel; the first voltage generating unit generates a first voltage; the second voltage generating unit generates a second voltage to the display panel according to the reference voltage; the voltage regulating unit generates a reference voltage to the display panel according to a first voltage; a timing unit electrically coupled to the elements; the time sequence unit compares the previous frame image data with the current frame image data, controls the voltage regulating unit according to the comparison result, and controls the reference voltage to be within a specific range.
Description
Technical field
This application involves the voltage regulation techniques of display device, in particular to a kind of display device and its voltage adjusting side
Method.
Background technique
In display, for system board by connection to control panel (Control Board, C-Board), control panel is logical
It crosses such as flexible flat cable (Flexible Flat Cable, FFC) and connects printed circuit board (PCB), printed circuit board passes through again
Source electrode flip chip (Source-Chip on Film, S-COF) and grid flip chip (Gate-Chip on Film, G-
COF it) is connect with viewing area.Display driving method include: system board by color (such as: R/G/B) compressed signal, control are believed
Number and power delivery to control panel.Signal is transmitted to source after timing unit (Timing Controller, TCON) processing
Pole driving circuit (Source Driver) and gate driving circuit (Gate Driver).Pass through relevant integrated circuit or chip
By the data of necessity and power delivery in viewing area, so that display obtains power supply, the signal that picture demand is presented.
In dynamic picture, since the charging time not enough leads to fuzzy pictures.So should be defeated at input one
When the voltage entered, a bigger voltage can be inputted, the liquid crystal of display panel is enable to be charged to corresponding voltage in charging room,
Obtain corresponding brightness.This is overvoltage drive technology (Over Drive, stated later with OD).In existing OD technology,
It is to be compared for the data of current picture and the data of previous frame picture.Again by reading memory internal storage with enquiry form,
New voltage value is exported again to display panel.Wherein, the memory internal storage such as EPROM, EEPROM ... is waited same or like
Data storage elements.
However, display panel shows that the operating voltage of picture is as produced by gamma voltage generation unit, to meet
The voltage of driving is pressed, gamma voltage generation unit must adjust the voltage value on each route to connect with display panel, with
Using the extension of time, the decaying of the operating voltage on each route or delay situation are not consistent, though enhancing picture brightness, but also
It is easy to produce the bad problem such as film flicker.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the application is, provides a kind of display device and its voltage adjusting side
Method starts overvoltage drive by adjusting share voltage.
It the purpose of the application and solves its technical problem and adopts the following technical solutions to realize.It is proposed according to the application
A kind of display device, the display device includes: display panel；First voltage generates unit, generates first voltage；Second electricity
Pressure generates unit, and first voltage described in electric property coupling generates unit and the display panel, the second voltage generate unit according to
Second voltage is generated according to the first voltage, and transmits the second voltage to the display panel；Voltage regulation unit, electrically
It couples the first voltage and generates unit and the display panel, the voltage regulation unit generates base according to the first voltage
Quasi- voltage, and the reference voltage is transmitted to the display panel；Timing unit, first voltage described in electric property coupling generate single
First, the described second voltage generates unit and the voltage regulation unit；Wherein, the timing unit compare previous frame picture data with
This frame picture data controls the voltage regulation unit, the controlled adjustment base of voltage regulation unit according to comparison result
Quasi- voltage is in particular range.
The application solves its technical problem also following technical measures can be used to further realize.
In the embodiment of the application, the timing unit compares the previous frame picture data and described frame frame numbers
According to when, be the operating voltage for comparing the previous frame picture data and described frame picture data.
In the embodiment of the application, the particular range refers to that the reference voltage, which is positively or negatively adjusted one, allows
Voltage range.
In the embodiment of the application, the timing unit judges that described frame picture data is greater than the previous frame picture
When data, reference voltage described in the voltage regulation unit negative regulation is enabled.
In the embodiment of the application, the timing unit judges that described frame picture data is less than the previous frame picture
When data, the voltage regulation unit forward direction is enabled to adjust the reference voltage.
In the embodiment of the application, the allowable voltage range is 1V to 3V.
In the embodiment of the application, the particular range includes a standard operating voltage value of the fundamental voltage,
It is that the reference voltage is adjusted to lower than the standard operating voltage when reference voltage described in the timing unit negative regulation
Value.
It is by the benchmark when timing unit forward direction adjusts the reference voltage in the embodiment of the application
Voltage is adjusted to higher than the standard operating voltage value.
In the embodiment of the application, the timing unit provides control signal, the voltage tune according to comparison result
It saves unit and adjusts the reference voltage according to the control signal.
In the embodiment of the application, the control signal includes high potential and low potential, the timing unit judgement
When described frame picture data is less than the previous frame picture data, the control signal of high potential, the timing unit are provided
When judging that described frame picture data is greater than the previous frame picture data, the control signal of low potential is provided.The control
When signal is high potential, the voltage regulation unit forward direction adjusts the reference voltage, when the control signal is low potential, institute
State reference voltage described in voltage regulation unit negative regulation.
In the embodiment of the application, the timing unit compares the previous frame picture data and described frame frame numbers
According to when, be to compare previous frame grayscale value and this frame grayscale value.
Further include storage element in the embodiment of the application, stores multiple grayscale control values and multiple benchmark are adjusted
Voltage, the multiple grayscale control value adjust voltage with the multiple benchmark and are mutually matched, and the timing unit is according to comparison knot
Fruit finds out target gray scale value from the multiple grayscale control value, finds out according to the target gray scale value from the multiple benchmark and adjusts
Voltage finds out datum target voltage, and enabling the voltage regulation unit adjust the reference voltage is the datum target voltage.
In the embodiment of the application, each grayscale control value includes that previous frame grayscale control value is compareed with this frame grayscale
Value, the previous frame grayscale value is compared each previous frame grayscale control value by the timing unit, by described frame grayscale value ratio
To each described frame grayscale control value, to find out the target gray scale value.
In the embodiment of the application, the multiple grayscale control value includes the previous frame grayscale value and described frame ash
Difference between rank value.
In the embodiment of the application, the previous frame grayscale value is the corresponding all grayscale numerical value of previous frame picture data
Average value, described frame grayscale value are the average value of the corresponding all grayscale numerical value of this frame picture data.
In the embodiment of the application, the previous frame grayscale value is in the corresponding all grayscale numerical value of previous frame picture data
The half of the maximum, described frame grayscale value are the halves of the maximum in the corresponding all grayscale numerical value of this frame picture data.
Time purpose of the application is a kind of voltage adjusting method of display device comprising: it is compared by timing unit
Previous frame picture data and this frame picture data；By the timing unit comparison result to control voltage regulation unit；Pass through institute
It states voltage regulation unit and adjusts the reference voltage in particular range.
The application solves its technical problem also following technical measures can be used to further realize.
In the embodiment of the application, the timing unit compares the previous frame picture data and described frame frame numbers
According to when, be the operating voltage for comparing the previous frame picture data and described frame picture data, the particular range refers to institute
It states reference voltage and positively or negatively adjusts an allowable voltage range.
In the embodiment of the application, the timing unit compares the previous frame picture data and described frame frame numbers
According to when, be to compare previous frame grayscale value and this frame grayscale value.
In the embodiment of the application, storage element stores multiple grayscale control values and multiple benchmark adjust voltage, institute
It states multiple grayscale control values to be mutually matched with the multiple benchmark adjusting voltage, the timing unit is according to comparison result described in
Multiple grayscale control values find out target gray scale value, adjust voltage from the multiple benchmark according to the target gray scale value and find out benchmark
Target voltage, enabling the voltage regulation unit adjust the reference voltage is the datum target voltage.
In the embodiment of the application, each grayscale control value includes that previous frame grayscale control value is compareed with this frame grayscale
Value, the target gray scale value includes that the previous frame grayscale value is identical with the previous frame grayscale control value, described frame grayscale value and
Described frame grayscale control value is identical.
In the embodiment of the application, the multiple grayscale control value includes the previous frame grayscale value and described frame ash
Difference between rank value.
In the embodiment of the application, the first voltage is reference voltage.
In the embodiment of the application, the second voltage is gamma electric voltage.
The further object of the application is a kind of display device comprising: display panel；Reference voltage generates unit, generates
Reference voltage；Gamma voltage generation unit, reference voltage described in electric property coupling generate unit and the display panel, the gamma
Voltage generating unit generates gamma electric voltage according to the reference voltage, and transmits the gamma electric voltage to the display panel；Electricity
Pressure adjusts unit, and reference voltage described in electric property coupling generates unit and the display panel, and the voltage regulation unit is according to institute
It states reference voltage and generates reference voltage, and transmit the reference voltage to the display panel；Timing unit, described in electric property coupling
Reference voltage generates unit, the gamma voltage generation unit and the voltage regulation unit, wherein the timing unit compares
Previous frame picture data and this frame picture data provide control signal according to comparison result, and the voltage regulation unit is according to described in
It controls signal and adjusts the reference voltage in particular range；The timing unit compares the previous frame picture data and described
The operating voltage difference of frame picture data, the particular range, which refers to, positively or negatively adjusts 2V for the reference voltage；Alternatively,
The timing unit compares the grayscale numerical value of the previous frame picture data Yu described frame picture data, and the particular range includes
Multiple benchmark adjust voltage and its corresponding multiple grayscale control values, the timing unit will be more described in the grayscale values match
A grayscale control value adjusts in voltage from the multiple benchmark and finds out matched datum target voltage, the voltage regulation unit
Adjusting the reference voltage is the datum target voltage.
The application is by adjusting the stable starting overvoltage drive of share voltage, while compared with can effectively enhance picture brightness
Avoid the bad problem such as film flicker.Secondly, only needing to adjust share voltage whether the starting of overvoltage drive, simplify overvoltage drive
Starting mode, also compared with the aging for the associated component that can slow down voltage supply.Third, the application can not substantially change existing production
The premise of process maintains former process requirement and product cost, also can apply to related with same or like function and type
Display device, therefore applicability is higher.
Detailed description of the invention
Fig. 1 a is the configuration diagram of exemplary display device；
Fig. 1 b is the driving circuit partial structural diagram of exemplary display device；
Fig. 2 is the display device schematic diagram of one embodiment of the application；
Fig. 3 is the display device schematic diagram of one embodiment of the application；
Fig. 4 is the grayscale table of comparisons schematic diagram of one embodiment of the application；
Fig. 5 is the voltage adjusting method of the display device of one embodiment of the application.
Specific embodiment
The explanation of following embodiment is to can be used to the particular implementation of implementation to illustrate the present invention with reference to additional schema
Example.The direction term that the present invention is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outside", " side "
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.
Attached drawing and explanation are considered inherently illustrative, rather than restrictive.The similar list of structure in the figure
Member is to be given the same reference numerals.In addition, in order to understand and be convenient for description, the size and thickness of each component shown in the accompanying drawings are
It is arbitrarily shown, but the invention is not restricted to this.
In the accompanying drawings, for clarity, the thickness in layer, film, panel, region etc. is exaggerated, the configuration of circuit is also exaggerated
Range.In the accompanying drawings, in order to understand and be convenient for description, the thickness of some layer and region is exaggerated, the configuration model of circuit is also exaggerated
It encloses.It will be appreciated that when the component of such as layer, film, region, circuit or substrate component "upper" another referred to as " ", it is described
Component can be directly on another component, or there may also be intermediate modules.
In addition, in the description, unless explicitly described as opposite, otherwise word " comprising " will be understood as meaning to wrap
The component is included, but is not excluded for any other component.In addition, in the description, " above " means to be located at target group
Part either above or below, and be not intended to must be positioned on the top based on gravity direction.
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Drawings and the specific embodiments, to the display device of a kind of display panel proposed according to the present invention and its application, specific implementation
Mode, structure, feature and its effect, detailed description is as follows.
Fig. 1 a is the configuration diagram of exemplary display device.A kind of display device, comprising: control panel 100, the control
Making sheet 100 includes timing unit 101 (Timing Controller, TCON) 101；Printed circuit board 103, with the control panel
Between be connected by flexible flat cable (Flexible Flat Cable, FFC) 102；Source electrode drive circuit 104 and grid
Driving circuit 105 respectively in viewing area 106 data line and scan line connect, in some embodiments, gate driving circuit
105 and source electrode drive circuit 104 include but be not limited to flip chip form.
In some embodiments, display can also be grid array driving (Gate On Array) type, gate driving
Circuit 105 can be divided into boost module (level shifter) and shift register (shift register), and boost module is set
It sets on control panel, shift register is arranged on active array substrate.
In some embodiments, the driving method of display device include: system board provide color (such as: R/G/B) press
Contracting signal controls signal and power delivery to control panel 100.After timing unit 101 on control panel 100 handles these signals,
Together with the power supply of driven circuit processing, by such as flexible flat cable (Flexible Flat Cable, FFC) 102, together
It is transmitted to the source electrode drive circuit 104 and gate driving circuit 105 of printed circuit board 103, source electrode drive circuit 104 and grid drive
Dynamic circuit 105 passes through grid line 105a and source electrode line 104a for the data of necessity and power delivery in viewing area 106, to make
It obtains display and obtains power supply, the signal that picture demand is presented.
Fig. 1 b is the driving circuit partial structural diagram of exemplary display device.Driving circuit includes: first voltage
Generate unit 110, second voltage generates unit 120 and voltage regulation unit 130.First voltage generates unit 110 to the second electricity
Pressure generates unit 120 and provides first voltage, and first voltage generates through second voltage and exports multiple second electricity after unit 120 is converted
Pressure, usually 18 or 14).Multiple second voltages are respectively provided the viewing area 106 of display panel 10, to drive display surface
Each pixel circuit of plate 10.
In some embodiments, the first voltage is reference voltage, and the second voltage is gamma electric voltage.
During display, display needs first to generate reference voltage.In general, the second electricity of reference voltage and display
The voltage value of pressure, ceiling voltage and minimum voltage has direct numerical value corresponding relationship.In the prior art, first voltage generates single
Member 110 generates first voltage, and first voltage and ground voltage can be transferred to voltage regulation unit 130, voltage regulation unit 130
Such as Digital Voltage Regulator (Digital Voltage Regulator, DVR) or mechanical voltage regulator (Voltage
Regulator, VR).According to voltage divider principle, voltage regulation unit 130 is i.e. adjustable to obtain the reference voltage of demand, and will output
Reference voltage is to the viewing area of display panel 106.
However, second voltage generates unit 120 must when display device enables overvoltage drive (Over Drive, OD) function
The voltage value on each route must be adjusted, to meet the demand voltage of overvoltage drive.But with the extension for using the time, each route
On operating voltage decaying or delay situation it is not consistent, though overvoltage drive can enhance picture brightness at this time, but also be easy to produce
The bad problems such as raw film flicker.
Fig. 2 is the display device schematic diagram of one embodiment of the application.If Fig. 2 is painted, in the embodiment of the application, one
Kind display device includes: display panel 10；First voltage generates unit 110, generates first voltage；The second voltage generates single
Member 120 transmits the second voltage to the display panel 10；Voltage regulation unit 130, first voltage described in electric property coupling produce
Raw unit 110 and the display panel 10, and the reference voltage is transmitted to the display panel 10；Timing unit 101, electrically
It couples the first voltage and generates unit 110, second voltage generation unit 120 and the voltage regulation unit 130；Its
In, the timing unit 101 compares previous frame picture data and this frame picture data to control the voltage regulation unit 130, institute
The controlled adjustment reference voltage of voltage regulation unit 130 is stated in particular range.
In some embodiments, the timing unit 101 compares the previous frame picture data and described frame picture data
When, it is the operating voltage for comparing the previous frame picture data and described frame picture data.
In some embodiments, the particular range is positively or negatively to adjust an allowable voltage model with standard value to begin
It encloses.
In some embodiments, the timing unit 101 judges that described frame picture data is greater than the previous frame frame numbers
According to when, enable reference voltage described in 130 negative regulation of voltage regulation unit.
In some embodiments, the timing unit 101 judges that described frame picture data is less than the previous frame frame numbers
According to when, enable the voltage regulation unit 130 is positive to adjust the reference voltage.
In some embodiments, the allowable voltage range is 1V to 3V.In some embodiments, the allowable voltage model
It encloses for 2V.
In some embodiments, the timing unit 101 judges that described frame picture data is greater than the previous frame frame numbers
According to when, for the voltage regulation unit 130 with the current reference voltage -2V, the timing unit 101 judges that described frame is drawn
When face data is less than the previous frame picture data, the voltage regulation unit is with the current reference voltage+2V.
In the embodiment of the application, the particular range includes a standard operating voltage value of the fundamental voltage,
It is that the reference voltage is adjusted to lower than the standard operating voltage when reference voltage described in the timing unit negative regulation
Value.
It is by the benchmark when timing unit forward direction adjusts the reference voltage in the embodiment of the application
Voltage is adjusted to higher than the standard operating voltage value.
In some embodiments, the timing unit 101 judges that described frame picture data is greater than the previous frame frame numbers
According to when, increasing the reference voltage is the standard value -2V, and the timing unit 101 judges that described frame picture data is less than
When the previous frame picture data, downgrading the reference voltage is the standard value+2V.
In some embodiments, the timing unit 101 provides control signal according to comparison result, and the voltage adjusts single
Member 130 adjusts the reference voltage according to the control signal.
In some embodiments, the operating voltage difference of the previous frame picture data and described frame picture data be greater than or
Equal to threshold value is adjusted, the timing unit 101 provides the control signal.
In some embodiments, the adjusting threshold value is set as fixed numbers of the 0.5V into 1V.
In some embodiments, described frame picture data is equal or big with the operating voltage of the previous frame picture data
When causing equal, the timing unit 101 does not provide the control signal, and the voltage regulation unit 130 maintains the current base
The voltage value of quasi- voltage.
In some embodiments, the adjusting threshold value is 0.5V, the previous frame picture data and described frame picture data
Operating voltage difference less than 0.5V when, the timing unit 101 does not provide the control signal.
In some embodiments, the control signal includes high potential and low potential.The timing unit 101 judges described
When this frame picture data is less than the previous frame picture data, the control signal of high potential is provided, the timing unit 101 is sentenced
When the described frame picture data that break is greater than the previous frame picture data, the control signal of low potential is provided.The control letter
When number being high potential, the voltage regulation unit 130 is positive to adjust the reference voltage, when the control signal is low potential,
Reference voltage described in 130 negative regulation of voltage regulation unit.
In some embodiments, the timing unit 101 compares the previous frame picture data and described frame picture data
When, it is to compare previous frame grayscale value and this frame grayscale value.
Fig. 3 is the display device schematic diagram of one embodiment of the application.In some embodiments, display device further includes storage
Unit 150, storage element 150 described in 101 electric property coupling of timing unit.The storage element 150 stores multiple grayscale pair
Voltage is adjusted according to value and multiple benchmark, the multiple grayscale control value adjusts voltage with the multiple benchmark and is mutually matched.It is described
Timing unit 101 finds out target gray scale value from the multiple grayscale control value according to comparison result, according to the target gray scale value
Voltage is adjusted from the multiple benchmark and finds out datum target voltage, and the voltage regulation unit 130 is enabled to adjust the reference voltage
For the datum target voltage.
In some embodiments, the control signal includes the datum target voltage.
In some embodiments, the multiple grayscale control value include the previous frame grayscale value with described frame grayscale value it
Between difference.
Fig. 4 is the grayscale table of comparisons schematic diagram of one embodiment of the application.In some embodiments, each grayscale control value packet
Include previous frame grayscale control value and this frame grayscale control value；Previous frame grayscale control value described in each group and described frame grayscale control value
A corresponding benchmark adjusts voltage at the intersection of the table of comparisons.Before the target gray scale value includes the previous frame grayscale value and is described
Frame grayscale control value is identical, and described frame grayscale value is identical as described frame grayscale control value.The timing unit 101 is being found
After the target gray scale value, its corresponding datum target voltage can be obtained, the voltage regulation unit 130 adjusts the base
Quasi- voltage is the datum target voltage.Citing: the previous frame grayscale value that the target gray scale value includes is previous frame grayscale
(233), including described frame grayscale value be this frame grayscale (121), then it is electric correspond to the datum target for the target gray scale value
Pressure is reference voltage (233-121).It is benchmark voltage (233- that the voltage regulation unit 130, which can adjust the reference voltage,
121)。
In some embodiments, the previous frame grayscale value is being averaged for the corresponding all grayscale numerical value of previous frame picture data
Value, described frame grayscale value is the average value of the corresponding all grayscale numerical value of this frame picture data.
In some embodiments, stating previous frame grayscale value is the maximum in the corresponding all grayscale numerical value of previous frame picture data
Half, described frame grayscale value are the halves of the maximum in the corresponding all grayscale numerical value of this frame picture data.
Fig. 5 is the voltage adjusting method of the display device of one embodiment of the application.The method includes:
Step S310 compares previous frame picture data and this frame picture data by timing unit 101.
Step S320, by 101 comparison result of timing unit to control voltage regulation unit 130.
Step S330 adjusts the reference voltage in particular range by the voltage regulation unit 130.
In some embodiments, the timing unit 101 compares the previous frame picture data and described frame picture data
When, it is the operating voltage for comparing the previous frame picture data and described frame picture data, the particular range refers to will be described
Reference voltage positively or negatively adjusts an allowable voltage range.
In some embodiments, the timing unit 101 compares the previous frame picture data and described frame picture data
When, it is to compare previous frame grayscale value and this frame grayscale value, storage element 150 stores multiple grayscale control values and multiple benchmark adjust electricity
Pressure, the multiple grayscale control value adjust voltage with the multiple benchmark and are mutually matched, and the timing unit 101 is tied according to comparison
Fruit finds out target gray scale value from the multiple grayscale control value, finds out according to the target gray scale value from the multiple benchmark and adjusts
Voltage finds out datum target voltage, and enabling the voltage regulation unit 130 adjust the reference voltage is the datum target voltage.
In some embodiments, each grayscale control value includes previous frame grayscale control value and this frame grayscale control value, described
Target gray scale value includes that the previous frame grayscale value is identical as the previous frame grayscale control value, described frame grayscale value and described frame
Grayscale control value is identical；Alternatively, the multiple grayscale control value includes between the previous frame grayscale value and described frame grayscale value
Difference.
In one embodiment of the application, a kind of display device of the application comprising: display panel 10；Voltage adjusts single
Member 130 generates first voltage；Second voltage generates unit 120, voltage regulation unit 130 described in electric property coupling and the display
Panel 10, the second voltage generates unit 120 and generates second voltage according to the first voltage, and transmits the second voltage
To the display panel 10；Voltage regulation unit 130, voltage regulation unit 130 and the display panel 10 described in electric property coupling,
The voltage regulation unit 130 generates reference voltage according to the first voltage, and transmits the reference voltage to the display
Panel 10；Timing unit 101, voltage regulation unit 130, the second voltage described in electric property coupling generate unit 120 with it is described
Voltage regulation unit 130, wherein the timing unit 101 compares previous frame picture data and this frame picture data, ties according to comparing
Fruit provides control signal, and the voltage regulation unit 130 adjusts the reference voltage in particular range according to the control signal
It is interior；The timing unit 101 compares the operating voltage difference of the previous frame picture data Yu described frame picture data, the spy
Determine range and refer to the reference voltage is positively or negatively adjusted 2V；Alternatively, the timing unit 101 compares the previous frame picture
The grayscale numerical value of data and described frame picture data, the particular range include that multiple benchmark adjust voltages and its corresponding more
A grayscale control value, the timing unit 101 is by the multiple grayscale control value of the grayscale values match, from the multiple base
LJ is adjusted in voltage and is found out matched datum target voltage, and it is described that the voltage regulation unit 130, which adjusts the reference voltage,
Datum target voltage.
In some embodiments, the first voltage is reference voltage.
In some embodiments, the second voltage is gamma electric voltage.
The display panel of the application includes first substrate and the second substrate, and first substrate and the second substrate may be, for example, actively
Array switch (Thin Film Transistor, TFT) substrate, chromatic filter layer (Color Filter, CF) substrate.It is so unlimited
In this, in some embodiments, the active array switch and chromatic filter layer of the application can be also formed on same substrate.
In some embodiments, the display panel of the application may be, for example, liquid crystal display panel, so without being limited thereto,
It also can be OLED display panel, W-OLED display panel, QLED display panel, plasma display panel, curved face type display surface
Plate or other types display panel.
The application is by adjusting the stable starting overvoltage drive of share voltage, while compared with can effectively enhance picture brightness
Avoid the bad problem such as film flicker.Secondly, only needing to adjust share voltage whether the starting of overvoltage drive, simplify overvoltage drive
Starting mode, also compared with the aging for the associated component that can slow down voltage supply.Third, the application can not substantially change existing production
The premise of process maintains former process requirement and product cost, also can apply to related with same or like function and type
Display device, therefore applicability is higher.
" in some embodiments " and " in various embodiments " terms are used repeatedly etc..This term not usually refers to
Identical embodiment；But it may also mean that identical embodiment.The words such as "comprising", " having " and " comprising " are synonyms,
Unless its context meaning shows other meanings.
The above is only the specific embodiment of the application, not makes any form of restriction to the application, though
Right the application is disclosed above with specific embodiment, however is not limited to the application, any technology people for being familiar with this profession
Member, is not departing within the scope of technical scheme, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, but all contents without departing from technical scheme, the technical spirit according to the application
Any simple modification, equivalent change and modification to the above embodiments, in the range of still falling within technical scheme.
Claims (10)
1. a kind of display device characterized by comprising
Display panel；
First voltage generates unit, generates first voltage；
Second voltage generates unit, and first voltage described in electric property coupling generates unit and the display panel, the second voltage
It generates unit and generates second voltage according to the first voltage, and transmit the second voltage to the display panel；
Voltage regulation unit, first voltage described in electric property coupling generate unit and the display panel, the voltage regulation unit
Reference voltage is generated according to the first voltage, and transmits the reference voltage to the display panel；
Timing unit, first voltage described in electric property coupling generates unit, the second voltage generates unit and the voltage is adjusted
Unit；
Wherein, the timing unit compares previous frame picture data and this frame picture data, controls the voltage according to comparison result
Unit is adjusted, the voltage regulation unit is controlled to adjust the reference voltage in particular range.
2. display device as described in claim 1, which is characterized in that the timing unit compare the previous frame picture data with
The operating voltage of described frame picture data, the particular range refer to that the reference voltage, which is positively or negatively adjusted one, allows
Voltage range.
3. display device as described in claim 1, which is characterized in that the timing unit compare the previous frame picture data with
Described frame picture data is to compare previous frame grayscale value and this frame grayscale value.
4. display device as claimed in claim 3, which is characterized in that further include storage element, store multiple grayscale control values
Voltage is adjusted with multiple benchmark, the multiple grayscale control value adjusts voltage with the multiple benchmark and is mutually matched, the timing
Unit from the multiple grayscale control value finds out target gray scale value according to comparison result, according to the target gray scale value from described more
A benchmark adjusts voltage and finds out datum target voltage, and it is the datum target that the voltage regulation unit, which adjusts the reference voltage,
Voltage.
5. display device as claimed in claim 4, which is characterized in that each grayscale control value include previous frame grayscale control value with
The previous frame grayscale value is compared each previous frame grayscale control value by this frame grayscale control value, the timing unit, will be described
This frame grayscale value compares each described frame grayscale control value, to find out the target gray scale value.
6. display device as claimed in claim 4, which is characterized in that the previous frame grayscale value is that previous frame picture data is corresponding
The average value of all grayscale numerical value, described frame grayscale value are the average value of the corresponding all grayscale numerical value of this frame picture data.
7. a kind of voltage adjusting method of display device characterized by comprising
Previous frame picture data and this frame picture data are compared by timing unit；
By the timing unit comparison result to control voltage regulation unit；
The reference voltage is adjusted in particular range by the voltage regulation unit.
8. the voltage adjusting method of display device as claimed in claim 7, which is characterized in that described in the timing unit compares
It is the work for comparing the previous frame picture data and described frame picture data when previous frame picture data and described frame picture data
Make voltage, the particular range, which refers to, positively or negatively adjusts an allowable voltage range for the reference voltage.
9. the voltage adjusting method of display device as claimed in claim 7, which is characterized in that described in the timing unit compares
When previous frame picture data and described frame picture data, previous frame grayscale value and this frame grayscale value are compared, storage element storage is multiple
Grayscale control value and multiple benchmark adjust voltage value, and the multiple grayscale control value and the multiple benchmark adjust voltage mutual
Match, the timing unit finds out target gray scale value from the multiple grayscale control value according to comparison result, according to the target ash
Rank value adjusts voltage from the multiple benchmark and finds out datum target voltage, and the voltage regulation unit is enabled to adjust the reference voltage
For the datum target voltage.
10. a kind of display device characterized by comprising
Display panel；
Reference voltage generates unit, generates reference voltage；
Gamma voltage generation unit, reference voltage described in electric property coupling generate unit and the display panel, the gamma electric voltage
It generates unit and generates gamma electric voltage according to the reference voltage, and transmit the gamma electric voltage to the display panel；
Voltage regulation unit, reference voltage described in electric property coupling generate unit and the display panel, the voltage regulation unit
Reference voltage is generated according to the reference voltage, and transmits the reference voltage to the display panel；
Timing unit, reference voltage described in electric property coupling generate unit, the gamma voltage generation unit and the voltage and adjust
Unit；
Wherein, the timing unit compares previous frame picture data and this frame picture data, provides control signal according to comparison result,
The voltage regulation unit adjusts the reference voltage in particular range according to the control signal；
The timing unit compares the operating voltage difference of the previous frame picture data Yu described frame picture data, described specific
Range, which refers to, positively or negatively adjusts 2V for the reference voltage；
Alternatively, the timing unit compares the grayscale numerical value of the previous frame picture data Yu described frame picture data, the spy
Determining range includes that multiple benchmark adjust voltages and its corresponding multiple grayscale control values, and the timing unit is by the grayscale numerical value
The multiple grayscale control value is matched, is adjusted in voltage from the multiple benchmark and finds out matched datum target voltage, the electricity
It is the datum target voltage that pressure, which adjusts unit and adjusts the reference voltage,.
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