CN109147667A - Voltage compensating device and method, array substrate, display device - Google Patents
Voltage compensating device and method, array substrate, display device Download PDFInfo
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- CN109147667A CN109147667A CN201811110010.5A CN201811110010A CN109147667A CN 109147667 A CN109147667 A CN 109147667A CN 201811110010 A CN201811110010 A CN 201811110010A CN 109147667 A CN109147667 A CN 109147667A
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- voltage
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- driving
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
Abstract
The present invention relates to field of display technology, propose a kind of voltage compensating device, and for the driving voltage of compensation pixel driving circuit, which includes comparing unit and compensating unit.Driving voltage and a reference voltage of the comparing unit for pixel-driving circuit described in real-time reception, and generate the difference analog signal of the driving voltage and the reference voltage；Compensating unit generates the offset voltage arrived for compensating the driving voltage according to the difference analog signal for receiving the difference analog signal.The disclosure can carry out real-time compensation to the driving voltage of pixel-driving circuit.
Description
Technical field
This disclosure relates to charging technique field more particularly to a kind of voltage compensating device and method, array substrate, display dress
It sets.
Background technique
Need to connect a driving voltage (VDD) in AMOLED display technology, in pixel-driving circuit, the driving voltage
Normal display of the stability for mould group, plays vital influence.
In the related technology, which is provided by display integrated circuit (Display IC), however, by showing integrated electricity
There is voltage value fluctuation in the driving voltage (VDD) that road (Display IC) provides, to cause mould group in display process
The abnormal phenomenon of middle appearance part flower screen.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure is designed to provide a kind of voltage compensating device and method, array substrate, display device, and then at least
Overcome to a certain extent in the related technology, driving voltage (VDD) there is technical issues that voltage value.
According to an aspect of the present invention, a kind of voltage compensating device is provided, the driving for compensation pixel driving circuit
Voltage, the voltage compensating device include comparing unit and compensating unit.Comparing unit is for the electricity of pixel driver described in real-time reception
The driving voltage on road and a reference voltage, and generate the difference analog signal of the driving voltage and the reference voltage；Compensation
Unit is generated according to the difference analog signal and is arrived for compensating the driving voltage for receiving the difference analog signal
Offset voltage.
In a kind of exemplary embodiment of the invention, the comparing unit includes analog-digital converter and subtracter and coding
Device.Analog-digital converter is generated as driving voltage and the reference voltage described in real-time reception according to the driving voltage
First digital signal generates the second digital signal according to the reference voltage；Subtracter is connect with the analog-digital converter, is used for
First digital signal and second digital signal are received, and to first digital signal and second digital signal
Subtraction is carried out, to obtain difference signal；Encoder is connect with the subtracter, for receiving the difference signal and root
The difference analog signal is generated according to the difference signal.
In a kind of exemplary embodiment of the invention, the compensating unit includes protocol signal generation module and voltage
Output module.Protocol signal generation module is connect with the encoder, for receiving the difference analog signal and according to described
Difference analog signal generates protocol signal；Voltage output module is connect with the protocol signal generation module, described for receiving
Protocol signal, and the offset voltage is generated according to the protocol signal.
In a kind of exemplary embodiment of the invention, array substrate where the pixel-driving circuit includes that display is integrated
Circuit, the protocol signal generation module are formed in the display integrated circuit.
According to an aspect of the present invention, a kind of voltage compensating method is provided, the driving for compensation pixel driving circuit
Voltage, this method comprises:
The driving voltage and a reference voltage are acquired in real time, and generate the difference of the driving voltage Yu the reference voltage
It is worth analog signal, the reference voltage is the normal voltage of the driving voltage；
The offset voltage arrived for compensating the driving voltage is generated according to the difference analog signal.
It is described to acquire the driving voltage and a reference voltage in real time in a kind of exemplary embodiment of the invention, and
The difference analog signal for generating the driving voltage and the reference voltage includes:
Using driving voltage described in analog-digital converter real-time reception and the reference voltage, and it is raw according to the driving voltage
As the first digital signal, the second digital signal is generated according to the reference voltage；
First digital signal and second digital signal are received using subtracter, and to first digital signal
Subtraction is carried out with second digital signal, to obtain difference signal；
The difference signal is received using encoder and according to the difference signal setting value analog signal.
It is described described for compensating according to difference analog signal generation in a kind of exemplary embodiment of the invention
Driving voltage to offset voltage include:
It receives the difference analog signal using protocol signal generation module and is generated according to the difference analog signal and assist
Discuss signal；
The protocol signal is received using voltage output module, and the offset voltage is generated according to the protocol signal.
In a kind of exemplary embodiment of the invention, array substrate where the pixel-driving circuit includes that display is integrated
Circuit, the protocol signal generation module share the display integrated circuit.
According to an aspect of the present invention, a kind of array substrate is provided, which includes above-mentioned voltage compensation dress
It sets.
According to an aspect of the present invention, a kind of display device is provided, which includes above-mentioned array substrate.
The present invention provides a kind of voltage compensating device and method, array substrate, display device.The voltage compensating device is first
Using the driving voltage and a reference voltage of pixel-driving circuit described in comparing unit real-time reception, and generate the driving voltage
With the difference analog signal of the reference voltage；Then the difference analog signal is received using compensating unit, and according to described
Difference analog signal generates the offset voltage for compensating the driving voltage.On the one hand, which can be real-time
The value of complementary drive voltages makes compensated driving voltage stabilize to above-mentioned reference voltage, so as to avoid driving voltage fluctuation
Caused by show it is abnormal；On the other hand, the voltage compensating device structure is simple, and cost is relatively low.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of exemplary embodiment of disclosure voltage compensating device；
Fig. 2 is the structural schematic diagram of disclosure voltage compensating device another kind exemplary embodiment；
Fig. 3 is the structural schematic diagram of disclosure voltage compensating device another kind exemplary embodiment；
Fig. 4 is a kind of flow chart of exemplary embodiment of disclosure voltage compensating method.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be real in a variety of forms
It applies, and is not understood as limited to example set forth herein；On the contrary, these embodiments are provided so that the present invention will more comprehensively and
Completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical appended drawing reference indicates in figure
Same or similar structure, thus the detailed description that them will be omitted.
Although the term of relativity, such as "upper" "lower" is used to describe a component of icon for another in this specification
The relativeness of one component, but these terms are in this manual merely for convenient, for example, with reference to the accompanying drawings described in show
The direction of example.It is appreciated that, if making it turn upside down the device overturning of icon, the component described in "upper" will
As the component in "lower".Term of other relativities, such as "high" " low " "top" "bottom" " left side " " right side " etc. are also made to have similar
Meaning.When certain structure is at other structures "upper", it is possible to refer to that certain structural integrity is formed in other structures, or refer to certain structure
It is " direct " to be arranged in other structures, or refer to that certain structure is arranged in other structures by the way that another structure is " indirect ".
Term "one", " one ", " described " to indicate there are one or more elements/component part/etc.；Term " packet
Include " and " having " to indicate the open meaning being included and refer to that the element/component part/in addition to listing waits it
Outside also may be present other element/component part/etc..
The present exemplary embodiment provides a kind of voltage compensating device first, the driving electricity for compensation pixel driving circuit
Pressure, as shown in Figure 1, being a kind of structural schematic diagram of exemplary embodiment of disclosure voltage compensating device.The voltage compensating device
Including comparing unit 1 and compensating unit 2.Driving voltage and one of the comparing unit 1 for pixel-driving circuit described in real-time reception
Reference voltage, and generate the difference analog signal of the driving voltage and the reference voltage；Compensating unit 2 is described for receiving
Difference analog signal, and the offset voltage arrived for compensating the driving voltage is generated according to the difference analog signal.Wherein,
Reference voltage is the normal voltage of driving voltage.
The present exemplary embodiment provides a kind of voltage compensating device.The voltage compensating device is real-time first with comparing unit
The driving voltage and a reference voltage of the pixel-driving circuit are received, and generates the driving voltage and the reference voltage
Difference analog signal；Then the difference analog signal is received using compensating unit, and is generated according to the difference analog signal
For compensating the offset voltage of the driving voltage.On the one hand, which can be with the value of real-time compensation driving voltage
So that compensated driving voltage stabilizes to above-mentioned reference voltage, it is abnormal so as to avoid being shown caused by driving voltage fluctuation；
On the other hand, the voltage compensating device structure is simple, and cost is relatively low.
In the present exemplary embodiment, as shown in Fig. 2, being a kind of structure of exemplary embodiment of disclosure voltage compensating device
Schematic diagram.The comparing unit 1 may include analog-digital converter 11, subtracter 12 and encoder 13.Analog-digital converter 11 is used for
Driving voltage described in real-time reception and the reference voltage, and the first digital signal is generated as according to the driving voltage, according to
The reference voltage generates the second digital signal；Subtracter 12 is connect with the analog-digital converter, for receiving first number
Word signal and second digital signal, and subtraction is carried out to first digital signal and second digital signal,
To obtain difference signal；Encoder 13 is connect with the subtracter, for receiving the difference signal and according to the difference
Signal generates the difference analog signal.Wherein, as shown in figure 3, being a kind of exemplary embodiment of disclosure voltage compensating device
Structural schematic diagram.Analog-to-digital conversion device 11 can be connect with subtracter 12 by eight channels, the driving of analog-to-digital conversion device real-time reception
Voltage and reference voltage, and binary first digital signal and the second number are converted by driving voltage, reference voltage respectively
Signal, subtracter receive the first digital signal and the second digital signal, and calculate the first digital signal and the second digital signal
For difference to obtain difference signal, which is digital signal.Subtracter 12 and encoder 13 can also pass through eight channels
Connection, encoder 13 can will be converted into the analog signal that protocol signal generation module 21 can receive for digital signal.It will
Difference signal is converted into difference analog signal.
In the present exemplary embodiment, the compensating unit 2 may include protocol signal generation module 21 and voltage output
Module 22.Protocol signal generation module 21 is connect with the encoder 13, for receiving the difference analog signal and according to institute
It states difference analog signal and generates protocol signal；Voltage output module 22 is connect with the protocol signal generation module, for receiving
The protocol signal, and the offset voltage is generated according to the protocol signal.Wherein, as shown in figure 3, protocol signal generates mould
Block 21 can realize that display integrated circuit 3 itself has single wire control agreement pin by programming in display integrated circuit 3
SWIRE, enable signal pin EN, data signal pin DATA.Show that integrated circuit 3 passes through enable signal pin EN to encoder
13 issue enable signal, and difference analog signal is transferred to aobvious by enable signal control encoder 13 by data signal pin DATA
Show in integrated circuit.Show that integrated circuit generates protocol signal according to difference analog signal, wherein protocol signal is pulse letter
Number.Voltage output module 22 can be output voltage adjustable module (DC-DC module), and voltage output module 22 can be according to agreement
The number of pulse in the signal unit time generates an offset voltage.And it will be in offset voltage compensation to driving signal.This example
Property embodiment in, by protocol signal generation module 21, by display integrated circuit 3, realize can be to avoid being separately provided for programming
The circuit of protocol signal generation module, so as to save the cost.
The present exemplary embodiment also provides a kind of voltage compensating method, for the driving voltage of compensation pixel driving circuit,
As shown in figure 4, being a kind of flow chart of exemplary embodiment of disclosure voltage compensating method.This method comprises:
Step S1: acquiring the driving voltage and a reference voltage in real time, and generates the driving voltage and the reference
The difference analog signal of voltage, the reference voltage are the normal voltage of the driving voltage；
Step S2: the offset voltage arrived for compensating the driving voltage is generated according to the difference analog signal.
It is described to acquire the driving voltage and a reference voltage in real time in the present exemplary embodiment, and generate the driving
The difference analog signal of voltage and the reference voltage includes:
Using driving voltage described in analog-digital converter real-time reception and the reference voltage, and it is raw according to the driving voltage
As the first digital signal, the second digital signal is generated according to the reference voltage；
First digital signal and second digital signal are received using subtracter, and to first digital signal
Subtraction is carried out with second digital signal, to obtain difference signal；
The difference signal is received using encoder and according to the difference signal setting value analog signal.
In the present exemplary embodiment, described generated according to the difference analog signal is arrived for compensating the driving voltage
Offset voltage includes:
It receives the difference analog signal using protocol signal generation module and is generated according to the difference analog signal and assist
Discuss signal；
The protocol signal is received using voltage output module, and the offset voltage is generated according to the protocol signal.
In the present exemplary embodiment, array substrate where the pixel-driving circuit includes display integrated circuit, the association
View signal generation module is formed in the display integrated circuit.I.e. protocol signal generation module passes through to the integrated circuit programming of display
It realizes.
The voltage compensating method and above-mentioned voltage compensating device technical characteristic having the same that the present exemplary embodiment provides
And working principle, details are not described herein again.
According to an aspect of the present invention, a kind of array substrate is provided, which includes above-mentioned voltage compensation dress
It sets.
The array substrate and above-mentioned voltage compensating device technical characteristic having the same and work that the present exemplary embodiment provides
Make principle, details are not described herein again.
According to an aspect of the present invention, a kind of display device is provided, which includes above-mentioned array substrate.
The display device and above-mentioned array substrate technical characteristic having the same and work that the present exemplary embodiment provides are former
Reason, details are not described herein again.
Those skilled in the art will readily occur to of the invention its after considering specification and the invention invented here of practice
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
The common knowledge in the art that person's adaptive change follows general principle of the invention and do not invent including the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by appended
Claim is pointed out.
Above-mentioned described feature, structure or characteristic can be incorporated in one or more embodiment party in any suitable manner
In formula, if possible, it is characterized in discussed in each embodiment interchangeable.In the above description, it provides many specific thin
Section fully understands embodiments of the present invention to provide.It will be appreciated, however, by one skilled in the art that this can be practiced
The technical solution of invention, or can be using other methods, component, material without one or more in specific detail
Deng.In other cases, known features, material or operation are not shown in detail or describe to avoid each side of the invention is obscured
Face.
Claims (10)
1. a kind of voltage compensating device, the driving voltage for compensation pixel driving circuit characterized by comprising
Comparing unit for the driving voltage and a reference voltage of pixel-driving circuit described in real-time reception, and generates the drive
The difference analog signal of dynamic voltage and the reference voltage；
Compensating unit, for receiving the difference analog signal, and it is described for compensating according to difference analog signal generation
The offset voltage that driving voltage arrives.
2. voltage compensating device according to claim 1, which is characterized in that the comparing unit includes:
Analog-digital converter is generated for driving voltage and the reference voltage described in real-time reception, and according to the driving voltage
For the first digital signal, the second digital signal is generated according to the reference voltage；
Subtracter is connect with the analog-digital converter, for receiving first digital signal and second digital signal, and
Subtraction is carried out to first digital signal and second digital signal, to obtain difference signal；
Encoder is connect with the subtracter, for receiving the difference signal and generating the difference according to the difference signal
It is worth analog signal.
3. voltage compensating device according to claim 2, which is characterized in that the compensating unit includes:
Protocol signal generation module is connect with the encoder, for receiving the difference analog signal and according to the difference
Analog signal generates protocol signal；
Voltage output module is connect with the protocol signal generation module, for receiving the protocol signal, and according to the association
It discusses signal and generates the offset voltage.
4. voltage compensating device according to claim 3, which is characterized in that array substrate where the pixel-driving circuit
Including showing that integrated circuit, the protocol signal generation module are formed in the display integrated circuit.
5. a kind of voltage compensating method, the driving voltage for compensation pixel driving circuit characterized by comprising
The driving voltage and a reference voltage are acquired in real time, and generate the difference mould of the driving voltage Yu the reference voltage
Quasi- signal；
The offset voltage arrived for compensating the driving voltage is generated according to the difference analog signal.
6. voltage compensating method according to claim 5, which is characterized in that described to acquire the driving voltage and one in real time
Reference voltage, and the difference analog signal for generating the driving voltage and the reference voltage includes:
It is generated as using driving voltage described in analog-digital converter real-time reception and the reference voltage, and according to the driving voltage
First digital signal generates the second digital signal according to the reference voltage；
First digital signal and second digital signal are received using subtracter, and to first digital signal and institute
It states the second digital signal and carries out subtraction, to obtain difference signal；
The difference signal is received using encoder and the difference analog signal is generated according to the difference signal.
7. voltage compensating method according to claim 5, which is characterized in that described to be generated according to the difference analog signal
For compensate the driving voltage to offset voltage include:
It receives the difference analog signal using protocol signal generation module and agreement is generated according to the difference analog signal and believe
Number；
The protocol signal is received using voltage output module, and the offset voltage is generated according to the protocol signal.
8. voltage compensating method according to claim 7, which is characterized in that array substrate where the pixel-driving circuit
Including showing that integrated circuit, the protocol signal generation module are formed in the display integrated circuit.
9. a kind of array substrate, which is characterized in that including the described in any item voltage compensating devices of claim 1-4.
10. a kind of display device, which is characterized in that including array substrate as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811110010.5A CN109147667A (en) | 2018-09-21 | 2018-09-21 | Voltage compensating device and method, array substrate, display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811110010.5A CN109147667A (en) | 2018-09-21 | 2018-09-21 | Voltage compensating device and method, array substrate, display device |
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| CN201811110010.5A Pending CN109147667A (en) | 2018-09-21 | 2018-09-21 | Voltage compensating device and method, array substrate, display device |
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Cited By (2)
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| CN110148387A (en) * | 2019-05-21 | 2019-08-20 | 合肥奕斯伟集成电路有限公司 | A kind of the output compensation method and system of driving circuit |
| CN110796993A (en) * | 2019-11-15 | 2020-02-14 | 福州京东方光电科技有限公司 | Voltage compensation circuit and display device |
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