CN106251824A - Common electrical voltage regulator circuit and common electric voltage control method, display panels - Google Patents

Common electrical voltage regulator circuit and common electric voltage control method, display panels Download PDF

Info

Publication number
CN106251824A
CN106251824A CN201610912697.9A CN201610912697A CN106251824A CN 106251824 A CN106251824 A CN 106251824A CN 201610912697 A CN201610912697 A CN 201610912697A CN 106251824 A CN106251824 A CN 106251824A
Authority
CN
China
Prior art keywords
voltage
resistance
audion
common
regulator circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610912697.9A
Other languages
Chinese (zh)
Other versions
CN106251824B (en
Inventor
张剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Beijing BOE Display Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN201610912697.9A priority Critical patent/CN106251824B/en
Publication of CN106251824A publication Critical patent/CN106251824A/en
Application granted granted Critical
Publication of CN106251824B publication Critical patent/CN106251824B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

Landscapes

  • 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)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The open a kind of common electrical voltage regulator circuit of the present invention and common electric voltage control method, display panels, relate to technical field of liquid crystal display, differ relatively big for solving the common electric voltage value of existing common electrical voltage regulator circuit output with optimal value, cause the technical problem that the flicker level of liquid crystal indicator is bigger.Described common electrical voltage regulator circuit includes: electric discharge voltage regulating module, its common electric voltage provided to display panels for regulation；And variable module, it is connected with described electric discharge voltage regulating module.Described display panels includes the common electrical voltage regulator circuit described in technique scheme, and the control method of described common electric voltage regulates the common electric voltage in described display panels for using above-mentioned common electrical voltage regulator circuit.The common electrical voltage regulator circuit of present invention offer and common electric voltage control method, display panels are for liquid crystal indicator.

Description

Common electrical voltage regulator circuit and common electric voltage control method, display panels
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of common electrical voltage regulator circuit and common electric voltage regulation Method, display panels.
Background technology
Existing liquid crystal indicator generally includes display panels, and display panels includes the upper base being oppositely arranged Plate and infrabasal plate, and the liquid crystal layer being filled between upper substrate and infrabasal plate, this upper substrate is provided with public electrode, this lower base Plate is provided with pixel electrode.There is voltage difference between pixel electrode and relative public electrode, this voltage difference is referred to as showing voltage, This display voltage drives the liquid crystal molecule deflection in liquid crystal layer, so that liquid crystal indicator demonstrates different GTGs, Jin Ershi Existing liquid crystal display.
Above-mentioned display voltage generally falls into two kinds of polarity, when the voltage of pixel electrode is higher than the voltage of public electrode, and should Display voltage is positive polarity；When the voltage of pixel electrode is less than common electric voltage, this display voltage is negative polarity.In prior art In, by changing the voltage of pixel electrode, make display voltage constantly at positive polarity and negative polarity checker so that liquid crystal molecule Constantly deflection, it is to avoid liquid crystal molecule is constantly under the electric field of same polarity, to prevent the characteristic of liquid crystal molecule to be destroyed.
Therefore, in the case of the display continuous checker of voltage, if the common electric voltage in display panels is inaccurate, Liquid crystal display picture will produce flicker (flicker).To this, prior art exists one and is arranged in display panels Common electrical voltage regulator circuit, it provides common electric voltage being adjusted, this common electrical voltage regulator circuit to display panels In be provided with electric discharge voltage regulating module (Discharge Voltage Regulator, DVR), after display panels is made, logical Overregulate this electric discharge voltage regulating module, to regulate the common electric voltage that public regulation circuit is exported, so that it is guaranteed that this LCD Public electrode in plate is obtained in that stable common electric voltage.
But, electric discharge adjustment module of the prior art is fixing for range of accommodation and the regulation indexing of common electric voltage , and in actual production, for different display panels, by the regulation model required for common electric voltage regulation to optimal value Enclose different with regulation indexing.This common electric voltage value causing existing common electrical voltage regulator circuit to export differs relatively with optimal value Greatly, the flicker level causing liquid crystal indicator is bigger.
Summary of the invention
It is an object of the invention to provide a kind of common electrical voltage regulator circuit and common electric voltage control method, liquid crystal display Panel, to solve " range of accommodation of common electrical voltage regulator circuit and the fixing electric discharge voltage regulating module output caused of regulation indexing Common electric voltage value differ relatively big with optimal value, the flicker level causing liquid crystal indicator is bigger than normal " technical problem.
To achieve these goals, the present invention provides following technical scheme:
First aspect, the invention provides a kind of common electrical voltage regulator circuit, for providing public affairs in display panels Common voltage, comprising: electric discharge voltage regulating module, its common electric voltage provided to display panels for regulation；And variable mould Block, it is connected with described electric discharge voltage regulating module, for when regulating the common electric voltage of described common electrical voltage regulator circuit output, logical Cross the variate-value providing different, change range of accommodation and/or the regulation indexing of common electric voltage.
The common electrical voltage regulator circuit that the present invention provides, in addition to including electric discharge voltage regulating module, also includes variable module, This variable module can provide different variate-values, to change regulation model when common electric voltage is adjusted by electric discharge voltage regulating module Enclose and/or regulate indexing.Solid with the range of accommodation of the common electric voltage of voltage regulating module output of discharging in prior art and regulation indexing Surely comparing, the common electrical voltage regulator circuit in the present invention can select suitably to adjust according to the practical situation of display panels Adjusting range and/or regulation indexing, and then carry out the regulation of common electric voltage, and then common electrical voltage regulator circuit can be made to be exported Common electric voltage value close to optimal value, finally makes the flicker level of liquid crystal indicator of this common electrical voltage regulator circuit of application Low.
Second aspect, the invention provides a kind of display panels, and it includes described in preceding claim technical scheme Common electrical voltage regulator circuit.
Compared with prior art, the present invention provides the technique effect that possessed of display panels and above-mentioned liquid crystal display The technique effect that panel is had is identical, and here is omitted.
The third aspect, the invention provides the control method of a kind of common electric voltage, and it is applied to described in technique scheme Common electrical voltage regulator circuit, this common electric voltage control method comprises the steps:
Power to display panels, make this display panels show and preset picture；
The variable output module of described common electrical voltage regulator circuit provides the first variate-value, regulates the regulation of described common electric voltage The common electric voltage that the electric discharge voltage regulating module of circuit is exported, the flicker level making described default picture is minimum, writes down sudden strain of a muscle now Bright degree is A；
Variable output module provides the second variate-value, regulation electric discharge voltage regulating module, makes the flicker level of described default picture Minimum, writing down flicker level now is B；
The relatively size of A Yu B, if A is less than B, then makes variable output module provide described first variate-value, regulation electric discharge to adjust Die block, the flicker level making described default picture is A, terminates regulation；If A is more than B, terminate regulation.
The control method of the common electric voltage according to the present invention, uses the display panels described in technique scheme, right The common electric voltage that common electrical voltage regulator circuit is exported carries out twice regulation, when for the first time regulation, makes variable module provide the One variate-value, when second time regulation, makes variable module provide the second variate-value.The electric discharge voltage regulating module that first variate-value is corresponding Range of accommodation and/or regulation indexing be different from the second variate-value such that it is able to select more particularly suitable range of accommodation and regulation Indexing, makes the common electric voltage value that common electrical voltage regulator circuit exports closer to optimal value.Therefore, with common electric voltage in prior art Range of accommodation fixing with regulation indexing compare, the control method of the common electric voltage of the application can preferably reduce liquid crystal display The flicker level of device.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
The schematic diagram of the common electrical voltage regulator circuit that Fig. 1 is provided by embodiments of the invention 1.
The schematic diagram of the common electrical voltage regulator circuit that Fig. 2 is provided by embodiments of the invention 2.
The schematic diagram of the common electrical voltage regulator circuit that Fig. 3 is provided by embodiments of the invention 3.
The schematic diagram of the common electrical voltage regulator circuit that Fig. 4 is provided by embodiments of the invention 4.
Description of reference numerals:
10-discharges voltage regulating module, the output pin of OUT-electric discharge voltage regulating module,
The setting pin of SET-electric discharge voltage regulating module, the output lead of 11-electric discharge voltage regulating module,
40-downstream resistance, 120-voltage output module,
121,321,421-upstream resistance, 221-the first upstream resistance,
122,222,422-the first voltage audion, 123,223,423-the first voltage end,
124,224,424-the first voltage signal control end, 225-the second upstream resistance,
126,226,426-the second voltage audion, 127,227,427-the second voltage end,
128,228,428-the second voltage signal control end, 131-sets resistance,
330-sets resistive module, and 331-first sets resistance,
332-first sets audion, and 333-first sets resistance and controls end,
334-second sets resistance, and 335-second sets audion,
336-second sets resistance and controls end.
Detailed description of the invention
Below in conjunction with the accompanying drawing of various embodiments of the present invention, technical scheme is clearly and completely described, Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention Embodiment, the every other embodiment that those skilled in the art are obtained under not making creative work premise, broadly fall into The scope of protection of the invention.
Term " first ", " second " be only used for describe purpose, and it is not intended that instruction or hint relative importance or The implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or implicit Ground includes one or more this feature.
In describing the invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection " etc. Should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；It can be direct phase Even, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.Ordinary skill people for this area For Yuan, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
Additionally, for the nonpolarity elements such as resistance, its " input " and " outfan " are not intended to limit signal Specifically circulate direction, and is only intended to describe the annexation between these nonpolarity element and other elements.Such as, for connecing The resistance on ground, sense therein both can be pointed to, by ground connection, the element being connected with this resistance, it is possible to by with this resistance even The element connect points at ground connection.
[embodiment 1]
As it is shown in figure 1, the present embodiment provides a kind of common electrical voltage regulator circuit, for providing public affairs in display panels Common voltage, this common electrical voltage regulator circuit includes discharge voltage regulating module 10, variable module, setting resistance 131 and downstream resistance 40.
Electric discharge voltage regulating module 10 (Discharge Voltage Regulator, DVR) can use ISL45042 circuit, its Possesses setting pin SET and output pin OUT.The input setting resistance 131 is connected with setting pin SET, output head grounding； The input of downstream resistance 40 is connected with output pin OUT, output head grounding.This output pin OUT connects output lead 11, Common electric voltage is provided by elements such as this output lead 11 public electrodes in display panels.
Variable module is voltage output module 120, and its outfan is connected with the output pin OUT of electric discharge voltage regulating module 10, Including upstream resistance the 121, first voltage audion 122 and the second voltage audion 126.Wherein, the outfan of upstream resistance 121 It is connected with the outfan of voltage output module 120；The control end of the first voltage audion 122 and the first voltage signal control end 124 are connected, and input and the first voltage end 123 connect, and outfan is connected with the input of upstream resistance 121.Second voltage three The control end of pole pipe 126 and the second voltage signal control end and are connected, and input and the second voltage end 127 connect, and outfan is with upper The input of trip resistance 121 connects.Wherein, the voltage that voltage and second voltage end 127 of the first voltage end 123 output exports is not Deng.
According to said structure, control end 124 at the first voltage signal and input to the control end of the first voltage audion 122 pre- If the signal of telecommunication time, the input of the first voltage audion 122 and outfan turn on, make the first voltage end 123 and upstream resistance The input electrical connection of 121 electrically connects via the first voltage audion 122.Similarly, end is controlled to the at the second voltage signal When controlling the signal of telecommunication that end input is preset of two voltage audions 126, the input of the second voltage audion 126 is led with outfan Logical, make the input of the second voltage end 127 and upstream resistance 121 be electrically connected by the second voltage audion 126.Therefore by control Make the first voltage signal and control end 124 and the second voltage signal control end, the first voltage end 123 or the second voltage end can be made 127 provide voltage.
In case of the first voltage end 123 logical offer voltage, how the present embodiment is realized the tune to common electric voltage Joint illustrates.The voltage of the first voltage end 123 output by upstream resistance 121 and downstream resistance 40 dividing potential drop, by regulation with under The resistance value of the electric discharge voltage regulating module 10 of trip resistance 40 parallel connection, it is possible to the voltage at regulation resistance 40 two ends, downstream, i.e. scalable are public The common electric voltage that common-battery voltage regulator circuit is exported.
The above-mentioned regulation to electric discharge voltage regulating module 10 is by being arranged on the digital regulation resistance in ISL45042 circuit (Digitally Controlled Potentiometers, DCP, not shown) realizes, by regulating the setting of digital regulation resistance (span arranging value is 1～2 to value settingnBetween integer, and include 1 and 2n, wherein, n is the position of digital regulation resistance Number), it is possible to change upstream resistance 121 and the dividing potential drop situation of downstream resistance 40, and then change common electrical voltage regulator circuit is exported Common electric voltage.In the case of the voltage of the first voltage end 123 offer is constant, when setting value is 1, common electric voltage is adjusted Maximum common electric voltage value V of economize on electricity road outputmax1；When setting value is 2nTime, the minimum common electrical of common electrical voltage regulator circuit output Pressure value Vmin1。
Specifically, if the resistance of upstream resistance 121 is Ra, the resistance of downstream resistance 40 is Rb, set the resistance of resistance 131 For Rset；If the magnitude of voltage of the first voltage end 123 output is V1, the magnitude of voltage of the second voltage end 127 output is V2；If numeral current potential The value that arranges of device is setting.Then the common electric voltage output valve of the first voltage end 123 correspondence is:
V C O M 1 = V 1 × R b R a + R b × ( 1 - s e t t i n g 2 n R a k × R S E T )
Wherein, k is a constant, and it is determined, therefore for not by the physical circuit of voltage regulating module 10 parts such as grade that discharge , there is the value of different k in same electric discharge voltage regulating module 10.The value of this k directly can obtain according to the ISL45042 circuit after making , it is also possible to after producing the common electrical voltage regulator circuit that the present embodiment provides, gather real data calculate, k value Can be 20.
Therefore, the maximum V of the common electric voltage of the first voltage end 123 correspondencemax1With minima Vmin1Meet:
V m a x 1 = V 1 × R b R a + R b × ( 1 - 1 2 n R a k × R S E T )
V m i n 1 = V 1 × R b R a + R b × ( 1 - R a k × R S E T )
With the first voltage end 123 in like manner, the maximum V of the common electric voltage of the second voltage end 127 correspondencemax2And minima Vmin2Meet:
V m a x 2 = V 2 × R b R a + R b × ( 1 - 1 2 n R a k × R S E T )
V m i n 2 = V 2 × R b R a + R b × ( 1 - R a k × R S E T )
According to above-mentioned relation formula, in the first voltage end 123 and the second voltage end 127, output voltage bigger one The maximum of the common electric voltage that side is corresponding is more than the maximum of common electric voltage corresponding to the less side of output voltage, and, defeated The minima going out common electric voltage corresponding to the bigger side of voltage is more than common electric voltage corresponding to the less side of output voltage Minima, the i.e. first voltage end 123 is different with the range of accommodation of the second each self-corresponding common electric voltage of voltage end 127.
According to the above description, the common electrical voltage regulator circuit that the present embodiment provides is used, for different liquid crystal display bases Plate, it is possible to select suitable common electric voltage range of accommodation according to the practical situation of liquid crystal display substrate.Leading to prior art Crossing common electrical voltage regulator circuit when being adjusted common electric voltage, the range of accommodation of common electric voltage is fixing to be compared, according to the present invention Embodiment the, it is possible to reduce " model that the common electric voltage required for liquid crystal display substrate can regulate beyond common electrical voltage regulator circuit Enclose " probability, reduce the flicker level of liquid crystal indicator that liquid crystal display substrate is made, improve the good of liquid crystal display substrate Product rate.
It is understood that the first voltage end 123 and the second voltage end 127 two electricity that can be output voltage different Source；It can also be the variable same power supply of output voltage.
Additionally, as a prioritization scheme of the present embodiment, the first voltage signal controls end 124 and the second voltage signal control End processed can be same port, and, the audion that the first voltage audion 122 turns on for high level, and the second voltage three pole The audion that pipe 126 turns on for low level；Or, the audion that the first voltage audion 122 turns on for low level, and the second electricity The audion that pressure audion 126 turns on for high level.
According to this prioritization scheme, it is possible to only control end by one, to the first voltage audion 122 and the second voltage three pole Pipe 126 is controlled simultaneously, it is achieved only opens in the first voltage audion 122 and the second voltage audion 126, closes Another.Therefore, this prioritization scheme can simplify common electrical voltage regulator circuit, optimizes the manufacturing process of liquid crystal display substrate.
[embodiment 2]
Hereinafter, with reference to Fig. 2, the common electrical voltage regulator circuit providing embodiment 2 illustrates.Additionally, at the present embodiment In, about structure same as in Example 1, it is added identical reference, and the description thereof will be omitted.
The difference from Example 1 of the present embodiment is, voltage output module 220 (i.e. variable module) includes on first Trip resistance the 221, second upstream resistance the 225, first voltage audion 222 and the second voltage audion 226.Wherein, the first upstream The outfan of resistance 221 is connected with the outfan of voltage output module 220；The control end and first of the first voltage audion 222 Voltage signal controls end 224 and is connected, and input and the first voltage end 223 connect, outfan and the input of the first upstream resistance 221 End connects.The outfan of the second upstream resistance 225 is connected with the outfan of voltage output module 220；Second voltage audion 226 Control end and the second voltage signal control end 228 and be connected, input and the second voltage end 227 connect, on outfan and second The input of trip resistance 225 connects.Wherein, the resistance value of the first upstream resistance 221 is not equal to the resistance of the second voltage end 227 It is worth, and/or the voltage of the first voltage end 223 output is not equal to the voltage of the second voltage end 227 output.
Specifically, if the resistance of the first upstream resistance 221 is Ra1, the resistance of the second upstream resistance 225 is Ra2, downstream electrical The resistance of resistance 40 is Rb, set the resistance of resistance 131 as Rset；If the magnitude of voltage of the first voltage end 223 output is V1, the second voltage The magnitude of voltage of end 227 output is V2；If the value that arranges of digital regulation resistance is setting.
The maximum V of the common electric voltage corresponding to the first voltage end 223 and the first upstream resistance 221max1With minima Vmin1 Meet:
V m a x 1 = V 1 × R b R a 1 + R b × ( 1 - 1 2 n R a 1 k × R S E T )
V m i n 1 = V 1 × R b R a 1 + R b × ( 1 - R a 1 k × R S E T )
In like manner, the second voltage end 227 and the maximum V of the common electric voltage corresponding to the second upstream resistance 225max2And minimum Value Vmin2Meet:
V m a x 2 = V 2 × R b R a 2 + R b × ( 1 - 1 2 n R a 2 k × R S E T )
V m i n 2 = V 2 × R b R a 2 + R b × ( 1 - R a 2 k × R S E T )
Wherein, k is a constant, and it is determined, therefore for not by the physical circuit of voltage regulating module 10 parts such as grade that discharge , there is the value of different k in same electric discharge voltage regulating module 10.The value of this k directly can obtain according to the ISL45042 circuit after making , it is also possible to after producing the common electrical voltage regulator circuit that the present embodiment provides, gather real data calculate, k value Can be 20.
Therefore, in voltage V1 and the situation equal for voltage V2 of the second voltage end 227 output of the first voltage end 223 output Under, in the first upstream resistance 221 and the second upstream resistance 225, the side that resistance value is less, the common electric voltage of its correspondence is Big value and minima are bigger.Namely first upstream resistance 221 and the regulation of each self-corresponding common electric voltage of the second upstream resistance 225 Scope is different.
Additionally, in the voltage V2 situation not etc. of the voltage V1 of the first voltage end 223 output and the output of the second voltage end 227 Under, the first upstream resistance 221 and resistance of the second upstream resistance 225 is set, it is also possible to obtains different common electric voltages and adjusts model Enclose.
Therefore, the common electrical voltage regulator circuit that the present embodiment provides is used, for different liquid crystal display substrates, it is possible to root Suitable common electric voltage range of accommodation is selected according to the practical situation of liquid crystal display substrate.Common electric voltage is being passed through with prior art When common electric voltage is adjusted by regulation circuit, the range of accommodation of common electric voltage is fixing to be compared, according to embodiments of the present invention, it is possible to Reduce the probability of " scope that the common electric voltage required for liquid crystal display substrate can regulate " beyond common electrical voltage regulator circuit, Reduce the flicker level of the liquid crystal indicator that liquid crystal display substrate is made, improve the yields of liquid crystal display substrate.
[embodiment 3]
Hereinafter, with reference to Fig. 3, the common electrical voltage regulator circuit providing embodiment 3 illustrates.Additionally, at the present embodiment In, about structure same as in Example 1, it is added identical reference, and the description thereof will be omitted.
The common electrical voltage regulator circuit that the present embodiment provides is for providing common electric voltage in display panels, and this is public Voltage regulator circuit includes discharge voltage regulating module 10, variable module, upstream resistance 321 and downstream resistance 40.
Electric discharge voltage regulating module 10 (Discharge Voltage Regulator, DVR, not shown) can use ISL45042 Circuit, it possesses setting pin SET, output pin OUT.The outfan of outfan pin and upstream resistance 321 and downstream resistance The input of 40 connects respectively, and the input of this upstream resistance 321 connects live end 322, the outfan of this downstream resistance 40 Ground connection.
Variable module is for setting resistive module 330, and its outfan is connected with the setting pin SET of electric discharge voltage regulating module 10, Set resistance 334, first including the first setting resistance 331, second and set audion 332 and the second setting audion 335.Its In, first sets the output head grounding of resistance 331；The first control end setting audion 332 and first sets resistance and controls end 333 connect, and input is connected with the outfan setting resistive module 330, and outfan and first sets the input of resistance 331 even Connect；Second output head grounding setting resistance 334；The second control end setting audion 335 and second sets resistance and controls end 336 connect, and input is connected with the input setting resistive module 330, and outfan and second sets the outfan of resistance 334 even Connect.According to said structure, control end 333 and the second setting resistance control end 336 by controlling the first setting resistance, can make to put Electricity voltage regulating module 10 sets resistance 331 and is connected or is connected with the second setting resistance 334 with first.
In case of electric discharge voltage regulating module 10 is connected with the first setting resistance 331, provide using the present embodiment The process that common electric voltage is adjusted by common electrical voltage regulator circuit illustrates.The voltage of voltage end 322 output is by upstream electrical Resistance 321 and downstream resistance 40 dividing potential drop, by regulating the electric discharge voltage regulating module 10 in parallel with downstream resistance 40, regulation downstream resistance 40 The voltage at two ends, the common electric voltage that i.e. regulation common electrical voltage regulator circuit is exported.
Above-mentioned regulation is by digital regulation resistance (the Digitally Controlled being arranged in ISL45042 circuit Potentiometers, DCP) realize, by value setting that arranges regulating this digital regulation resistance, (span of value is set It is 1～2nIn integer, it includes 1 and 2n, wherein, the figure place of n digital regulation resistance), it is possible to changing ISL45042 circuit is provided Resistance, thus change the dividing potential drop situation of upstream resistance 321 and downstream resistance 40, and then it be defeated to change common electrical voltage regulator circuit institute The common electric voltage gone out.It is understood that the output electric current I of common electrical voltage regulator circuitOUTRegulation scale division value I0(i.e. When setting value often changes 1, IOUTKnots modification) the biggest, common electrical voltage regulator circuit output common electric voltage regulation indexing Value (i.e. when setting value often changes 1, the knots modification of common electric voltage value) is the biggest.Therefore, electric current I can be filled by regulationOUT's Regulation indexing I0, the regulation indexing of regulation common electric voltage.
Specifically, if first sets the resistance of resistance 331 as RSET1, second sets the resistance of resistance 334 as RSET2；If it is electric The magnitude of voltage of pressure side 322 output is V；If the value that arranges of digital regulation resistance is setting.Then for the first setting resistance 331 Speech, the output electric current I of its correspondenceOUTRegulation indexing I01Meet:
I 01 = 1 2 n × V k × R S E T 1
Further, the output electric current I of the second setting resistance 334 correspondenceoutRegulation indexing I02Meet:
I 02 = 1 2 n × V k × R S E T 2
Wherein, k is a constant, and it is determined, therefore for not by the physical circuit of voltage regulating module 10 parts such as grade that discharge , there is the value of different k in same electric discharge voltage regulating module 10.The value of this k directly can obtain according to the ISL45042 circuit after making , it is also possible to after producing the common electrical voltage regulator circuit that the present embodiment provides, gather real data calculate, k value Can be 20.
Setting resistance 331 due to first and the second setting resistance 334 has different resistances, therefore both are the most corresponding public The output electric current I of common-battery voltage regulator circuitOUTRegulation scale division value different, namely first set resistance 331 and second and set resistance The regulation indexing difference of 334 each self-corresponding common electric voltages.Such as, if first sets the tune of the common electric voltage of resistance 331 correspondence Joint indexing more than the regulation indexing of the common electric voltage of the second setting resistance 334 correspondence, then connects the first setting audion 332, disconnected Drive the second setting audion 335, make the first setting resistance 331 be connected with electric discharge voltage regulating module, defeated to common electrical voltage regulator circuit The common electric voltage gone out carries out coarse adjustment；Now, if the flicker level of liquid crystal indicator still cannot be reduced well, then disconnect One sets audion 332, connects the second setting triode 335, carries out the common electric voltage of the output of voltage regulator circuit publicly Fine setting, reduces the flicker level of liquid crystal indicator such that it is able to make common electric voltage value closer to optimal value further.
Therefore, with prior art in when common electric voltage being adjusted by common electrical voltage regulator circuit, common electric voltage Regulation indexing fixing compare, according to embodiments of the present invention, it is possible to the regulation indexing avoiding common electric voltage is fixing, reduces liquid crystal Show the flicker level of the liquid crystal indicator that substrate makes, improve the yields of liquid crystal display substrate.
As a prioritization scheme of the present embodiment, first sets resistance controls end 333 and the second setting resistance control end 336 is same port；Further, first sets the audion that audion 332 turns on for high level, and second sets audion 335 Audion for low level conducting；Or, first sets the audion that audion 332 turns on for low level, and second sets three The audion that pole pipe 335 turns on for high level.
According to this prioritization scheme, only by a signal end, audion 332 and second can be set first and set three poles Pipe 335 is controlled simultaneously, it is achieved only opens the first setting audion 332 and second and sets in audion 335, closes Another.Therefore, this prioritization scheme can simplify common electrical voltage regulator circuit, optimizes the manufacturing process of liquid crystal display substrate.
[embodiment 4]
Hereinafter, with reference to Fig. 4, the common electrical voltage regulator circuit providing embodiment 4 illustrates.Additionally, at the present embodiment In, about structure same as in Example 3, it is added identical reference, and the description thereof will be omitted.
The difference with embodiment 3 of the present embodiment is, common electrical voltage regulator circuit include upstream resistance 421, One voltage audion 422 and the second voltage audion 426.Wherein, the outfan of upstream resistance 421 and electric discharge voltage regulating module 10 Outfan connects；The control end of the first voltage audion 422 and the first voltage signal control end 424 and are connected, input and first Voltage end 423 connects, and outfan is connected with the outfan of electric discharge voltage regulating module 10；The control end of the second voltage audion 426 with Second voltage signal controls end 428 and is connected, and input and the second voltage end 427 connect, outfan and electric discharge voltage regulating module 10 Outfan connects.
According to said structure, control end 424 at the first voltage signal and export the signal of telecommunication to the first voltage audion 422, and First set resistance control end 333 to first set audion 332 export the signal of telecommunication time, the first voltage audion 422 and first Set audion 332 to be respectively turned on, thus the first voltage end 423 upstream resistance 421 output voltage, and set pin SET with First sets resistance 331 connects；Similarly, control end 428 at the second voltage signal and export telecommunications to the second voltage audion 426 Number, and the second setting resistance control end 336 is when the second setting audion 335 exports the signal of telecommunication, the second voltage audion 426 He Second sets audion 335 is respectively turned on, thus the second voltage end 427 upstream resistance 421 output voltage, and set pin SET and second sets resistance 334 and connects.
Further, in the present embodiment, about the common electric voltage of common electrical voltage regulator circuit output, the first voltage end 423 He The first regulation indexing setting the common electric voltage corresponding to resistance 331, is not equal to the second voltage end 427 and second and sets resistance The regulation indexing of the common electric voltage corresponding to 334；Further, what the first voltage end 423 and first set corresponding to resistance 331 is public The minima of voltage, equal to the minima of the common electric voltage corresponding to the second voltage end 427 and the second setting resistance 334.
Specifically, if the resistance of upstream resistance 421 is Ra, the resistance of downstream resistance 40 is Rb, first sets resistance 331 Resistance is Rset1, second sets the resistance of resistance 334 as Rset2；If the magnitude of voltage of the first voltage end 423 output is V1, the second electricity The magnitude of voltage of pressure side 427 output is V2, then:
First voltage end 423 and the output electric current I of the first setting resistance 331 correspondenceoutRegulation indexing I01, it is not equal to Two voltage ends 427 and the output circuit I of the second setting resistance 334 correspondenceoutRegulation indexing I02, i.e.
1 2 n × V 1 k × R S E T 1 ≠ 1 2 n × V 2 k × R S E T 2
Further, the minima of the first voltage end 423 and the first common electric voltage setting resistance 331 correspondence is equal to the second voltage The minima of the common electric voltage of end 427 and the second setting resistance 334 correspondence, i.e.
V 1 × R b R a + R b × ( 1 - 1 2 n R a k × R S E T 1 ) = V 2 × R b R a + R b × ( 1 - 1 2 n R a k × R S E T 2 )
Wherein, k is a constant, and it is determined, therefore for not by the physical circuit of voltage regulating module 10 parts such as grade that discharge , there is the value of different k in same electric discharge voltage regulating module 10.The value of this k directly can obtain according to the ISL45042 circuit after making , it is also possible to after producing the common electrical voltage regulator circuit that the present embodiment provides, gather real data calculate, k value Can be 20.
According to foregoing, in the present embodiment, what the first voltage end 423 and first set corresponding to resistance 331 is public The regulation indexing of voltage, is not equal to the second voltage end 427 and the second regulation setting the common electric voltage corresponding to resistance 334 divides Degree, therefore, uses the common electrical voltage regulator circuit that the present embodiment provides, and first can carry out common electric voltage with bigger regulation indexing Regulation, in the case of the flicker level of the picture that cannot reduce well shown by display panels, makes another set electricity Hindering and be connected with electric discharge voltage regulating module 10, the regulation indexing of this common electric voltage corresponding to setting resistance is less such that it is able to make public affairs Common voltage value is closer to optimal value.With in prior art when common electric voltage being adjusted by common electrical voltage regulator circuit, The regulation indexing of common electric voltage is fixing to be compared, according to embodiments of the present invention, it is possible to the regulation indexing avoiding common electric voltage is fixing, fall The flicker level of the liquid crystal indicator that low liquid crystal display substrate is made, improves the yields of liquid crystal display substrate.
Additionally, in the present embodiment, the first voltage end 423 and first sets the common electric voltage corresponding to resistance 331 Little value, the minima setting common electric voltage corresponding to resistance 334 equal to the second voltage end 427 and second is equal, and this makes the One voltage end 423 and first sets the common electric voltage range of accommodation corresponding to resistance 331, sets with the second voltage end 427 and second The range of accommodation determining common electric voltage corresponding to resistance 334 is close, it is to avoid cause because of the change of the degree of regulation of common electric voltage Significantly alterring of common electric voltage range of accommodation, prevent that the optimal value of common electric voltage from failing to fall after changing degree of regulation is public The situation of voltage regulation limits, finally guarantees that the magnitude of voltage regulation exported by common electrical voltage regulator circuit is to closest to optimum Value.
As a prioritization scheme of the present embodiment, the first voltage signal controls end the 424, second voltage signal and controls end 428, the first setting resistance controls end 333 and the second setting resistance control end 336 is same port.Further, the first voltage three pole Pipe 422 and first sets the audion that audion 332 turns on for high level, and the second voltage audion 426 and second sets three The audion that pole pipe 335 turns on for low level；Or, the first voltage audion 422 and the first setting audion 332 are low level The audion of conducting, and the audion that the second voltage audion 426 and the second setting audion 335 turn on for high level.
According to this prioritization scheme, only control end by a signal, can aforementioned four audion be carried out simultaneously simultaneously Control, it is achieved open the first voltage audion 422 and first the most simultaneously and set audion 332, or open the second voltage the most simultaneously Audion 426 and second sets audion 335.Therefore, this prioritization scheme can simplify common electrical voltage regulator circuit, optimizes liquid crystal The manufacturing process of display base plate.
[embodiment 5]
Present embodiments providing a kind of display panels, it includes upper substrate and the infrabasal plate being oppositely arranged, and fills out Filling the liquid crystal layer between upper substrate and infrabasal plate, this upper substrate is provided with public electrode, and this infrabasal plate is provided with pixel electrode.
Additionally, the display panels that the present embodiment provides also includes described in any one embodiment in embodiment 1-4 Common electrical voltage regulator circuit, it is for providing common electric voltage to display panels and being adjusted, this common electric voltage regulation electricity Road is provided with electric discharge voltage regulating module (Discharge Voltage Regulator, DVR), after display panels is made, By regulating this electric discharge voltage regulating module, to regulate the common electric voltage that public regulation circuit is exported, so that it is guaranteed that this liquid crystal display Public electrode in panel is obtained in that stable common electric voltage.
Compared with prior art, the technique effect that the display panels that the present embodiment is provided is had, with embodiment The technique effect that any one embodiment in 1-4 is had is identical, and here is omitted.
[embodiment 6]
Present embodiments providing a kind of common electric voltage control method, its any embodiment being applied in embodiment 1-4 carries The common electrical voltage regulator circuit of confession, this common electric voltage control method includes:
Step 1, liquid is powered to LCD panel, makes this display panels show and presets picture.In this step 1, can Directly power to display panels after display panels is made, make display panels show and preset picture.Can also Power to liquid crystal indicator after making liquid crystal indicator, make liquid crystal indicator preset display picture, do not limit Fixed.Additionally, this default picture should be the picture being easily confirmed whether flicker, the most static solid-color image etc..
Step 2, the variable output module of common electrical voltage regulator circuit provides the first variate-value, regulates the regulation of this common electric voltage The common electric voltage that the electric discharge voltage regulating module of circuit is exported, makes the flicker level presetting picture minimum, writes down flicker journey now Degree is A.
Step 3, variable output module provides the second variate-value, regulation electric discharge voltage regulating module, makes to preset the flicker journey of picture Degree minimum, writing down flicker level now is B；
In step 2 and step 3, the first variate-value and the second variate-value can be the voltage signals in embodiment 1-2, also It can be the setting resistance value in embodiment 3-4.About the evaluation of flicker level, can be that perusal is substantially estimated, it is possible to Being the flashing times in the statistical unit time, or being analyzed with computer after shooting, this is not carried out by the present embodiment It is particularly limited to.
Step 4, compares the size of A Yu B, if A is less than B, the most again makes variable output module to electric discharge voltage regulating module output First variable signal, the enumerator in regulation electric discharge voltage regulating module, making the flicker level presetting picture is A, terminates regulation；If A More than B, terminate regulation.
The control method of the common electric voltage according to the present invention, utilizes the public affairs that any embodiment in embodiment 1-4 is provided Common-battery voltage regulator circuit, carries out twice regulation to its common electric voltage exported, and when for the first time regulation, makes variable module provide the One variate-value, when second time regulation, makes variable module provide the second variate-value.The electric discharge voltage regulating module that first variate-value is corresponding Range of accommodation and/or regulation indexing be different from the second variate-value such that it is able to select more particularly suitable range of accommodation and regulation Indexing, makes the common electric voltage value that common electrical voltage regulator circuit exports closer to optimal value.Therefore, with common electric voltage in prior art Range of accommodation fixing with regulation indexing compare, the control method of the common electric voltage of the present embodiment can preferably reduce liquid crystal The flicker level of showing device.
In the description of above-mentioned embodiment, specific features, structure, material or feature can be at any one or many Individual embodiment or example combine in an appropriate manner.
Each embodiment in this specification all uses the mode gone forward one by one to describe, same or analogous between each embodiment Part sees mutually, and what each embodiment stressed is the difference with other embodiments.Especially for method For embodiment, owing to it is substantially similar to device embodiment, so describing fairly simple, relevant part sees product and implements The part of example illustrates.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.

Claims (10)

1. a common electrical voltage regulator circuit, for providing common electric voltage in display panels, it is characterised in that including:
Electric discharge voltage regulating module, its common electric voltage provided to display panels for regulation；And
Variable module, it is connected with described electric discharge voltage regulating module, in the public affairs regulating the output of described common electrical voltage regulator circuit During common voltage, by the variate-value that offer is different, change range of accommodation and/or the regulation indexing of common electric voltage.
Common electrical voltage regulator circuit the most according to claim 1, it is characterised in that the outfan of described variable module and institute The outfan stating electric discharge voltage regulating module connects, for providing different voltage as described in described common electrical voltage regulator circuit Variate-value, described variable module includes:
First upstream resistance, its outfan is connected with the outfan of described variable module；
First voltage audion, it controls end and the first voltage signal controls end and is connected, and input and the first voltage end connect, defeated Go out end to be connected with the input of described first upstream resistance；
Second upstream resistance, its outfan is connected with the outfan of described variable module；And
Second voltage audion, it controls end and the second voltage signal controls end and is connected, and input and the second voltage end connect, defeated Go out end to be connected with the input of described second upstream resistance,
Wherein, the voltage of described first voltage end output is not equal to the voltage of described second voltage end output.
Common electrical voltage regulator circuit the most according to claim 2, it is characterised in that described first voltage signal control end with It is same port that described second voltage signal controls end；
Described first voltage audion is the audion of high level conducting, and described second voltage audion is low level conducting Audion；Or, described first voltage audion is the audion of low level conducting, and described second voltage audion is high electricity The audion of flat conducting.
4. according to the common electrical voltage regulator circuit described in Claims 2 or 3, it is characterised in that also include:
Setting resistance, its input end grounding, outfan is connected with the setting pin of described electric discharge voltage regulating module；And
Downstream resistance, its input end grounding, outfan is connected with the outfan of described electric discharge voltage regulating module.
Common electrical voltage regulator circuit the most according to claim 1, it is characterised in that the outfan of described variable module and institute The setting pin stating electric discharge voltage regulating module connects, for providing different setting resistance to make in described common electrical voltage regulator circuit For described variate-value, described variable module includes:
First sets resistance, its input end grounding；
First sets audion, and it controls end and first and sets resistance control end connection, and input sets resistance with described first Outfan connect, outfan is connected with the outfan of described variable module；
Second sets resistance；Its input end grounding；And
Second sets audion, and it controls end and second and sets resistance control end connection, and input sets resistance with described second Outfan connect, outfan is connected with the outfan of described variable module,
Wherein, described first the resistance of resistance is set less than the described second resistance setting resistance.
Common electrical voltage regulator circuit the most according to claim 5, it is characterised in that also include:
Upstream resistance, its outfan is connected with the outfan of described electric discharge voltage regulating module；
First voltage audion, it controls end and the first voltage signal controls end and is connected, and input and the first voltage end connect, defeated Go out end to be connected with the outfan of described electric discharge voltage regulating module；
Second voltage audion, it controls end and the second voltage signal controls end and is connected, and input and the second voltage end connect, defeated Go out end to be connected with the outfan of described electric discharge voltage regulating module；And
Downstream resistance, its input end grounding, outfan is connected with the outfan of described electric discharge voltage regulating module.
Common electrical voltage regulator circuit the most according to claim 6, it is characterised in that described first voltage signal control end, Described second voltage signal controls end, described first setting resistance controls end and described second and sets resistance control end as same one end Mouthful；
Described first voltage audion and described first sets the audion that audion turns on, and described second voltage as high level Audion and described second sets the audion that audion turns on as low level；Or, described first voltage audion and described First sets the audion that audion turns on as low level, and described second voltage audion and described second set audion as The audion of high level conducting.
8. according to the common electrical voltage regulator circuit described in claim 6 or 7, it is characterised in that set in described electric discharge voltage regulating module The figure place of numerical digit device be n；If the resistance of described upstream resistance is Ra, described first sets the resistance of resistance as RSET1, described Two set the resistance of resistance as RSET2, the resistance of described downstream resistance is Rb；If the magnitude of voltage of described first voltage end output is V1, the magnitude of voltage of described second voltage end output is V2；Then n, Ra、RSET1、RSET2、Rb、V1And V2Meet following relational expression:
And
V 1 × R b R a + R b × ( 1 - 1 2 n R a k × R S E T 1 ) = V 2 × R b R a + R b × ( 1 - 1 2 n R a k × R S E T 2 )
Wherein, described k is constant.
9. a display panels, it is characterised in that include the common electric voltage regulation described in any one in claim 1-8 Circuit.
10. a common electric voltage control method, it is characterised in that described common electric voltage control method is applied to claim 1-8 Common electrical voltage regulator circuit described in any one, described common electric voltage control method includes:
Power to display panels, make this display panels show and preset picture；
The variable output module of described common electrical voltage regulator circuit provides the first variate-value, regulates described common electrical voltage regulator circuit The electric discharge common electric voltage that exported of voltage regulating module, the flicker level making described default picture is minimum, writes down flicker journey now Degree is A；
Variable output module provides the second variate-value, regulation electric discharge voltage regulating module, and the flicker level making described default picture is minimum, Writing down flicker level now is B；
The relatively size of A Yu B, if A is less than B, then makes variable output module provide described first variate-value, regulation electric discharge pressure regulation mould Block, the flicker level making described default picture is A, terminates regulation；If A is more than B, terminate regulation.
CN201610912697.9A 2016-10-19 2016-10-19 Common electrical voltage regulator circuit and common voltage adjusting method, liquid crystal display panel Active CN106251824B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610912697.9A CN106251824B (en) 2016-10-19 2016-10-19 Common electrical voltage regulator circuit and common voltage adjusting method, liquid crystal display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610912697.9A CN106251824B (en) 2016-10-19 2016-10-19 Common electrical voltage regulator circuit and common voltage adjusting method, liquid crystal display panel

Publications (2)

Publication Number Publication Date
CN106251824A true CN106251824A (en) 2016-12-21
CN106251824B CN106251824B (en) 2019-05-03

Family

ID=57600483

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610912697.9A Active CN106251824B (en) 2016-10-19 2016-10-19 Common electrical voltage regulator circuit and common voltage adjusting method, liquid crystal display panel

Country Status (1)

Country Link
CN (1) CN106251824B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120212471A1 (en) * 2002-09-25 2012-08-23 Nec Corporation Driving circuit and voltage generating circuit and display unit using the same
CN103295541A (en) * 2012-10-30 2013-09-11 上海天马微电子有限公司 Liquid crystal display screen and common voltage drive circuit thereof
CN103325356A (en) * 2013-06-21 2013-09-25 合肥京东方光电科技有限公司 Voltage regulation circuit of common electrode and display device
KR20130110388A (en) * 2012-03-29 2013-10-10 엘지디스플레이 주식회사 Method for controlling a flicker of liquid crystall display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120212471A1 (en) * 2002-09-25 2012-08-23 Nec Corporation Driving circuit and voltage generating circuit and display unit using the same
KR20130110388A (en) * 2012-03-29 2013-10-10 엘지디스플레이 주식회사 Method for controlling a flicker of liquid crystall display device
CN103295541A (en) * 2012-10-30 2013-09-11 上海天马微电子有限公司 Liquid crystal display screen and common voltage drive circuit thereof
CN103325356A (en) * 2013-06-21 2013-09-25 合肥京东方光电科技有限公司 Voltage regulation circuit of common electrode and display device

Also Published As

Publication number Publication date
CN106251824B (en) 2019-05-03

Similar Documents

Publication Publication Date Title
CN103353697B (en) A kind of array base palte and display panels
CN100412929C (en) Image Display device
CN104715721B (en) OLED and its driving method
CN105609080B (en) The top rake circuit of adjustable top rake waveform and the adjusting method of top rake waveform
CN101739978B (en) Device for automatically calibrating liquid crystal VCOM voltage value and method thereof
CN104766582B (en) A kind of regulating system and its adjusting method and display device
CN105427827B (en) Establishing method, device, drive circuit and the display device of gamma reference voltage
CN107945753B (en) Source drive mould group and liquid crystal display
US9007288B2 (en) Digitally controlled voltage generator
CN105654913B (en) Voltage feed unit and display device with voltage feed unit
EP3937161A1 (en) Backlight control circuit and control method therefor, and display terminal
CN107437407A (en) Public voltage generating circuit and liquid crystal display device
CN105511546B (en) Gamma reference voltage ripple filtering circuit and LCD
CN105788514A (en) Gamma voltage regulating circuit and method for driving chip, and AMOLED display
CN108172179A (en) Electric power management circuit
CN106782408B (en) Display panel, GOA circuit and its driving capability regulating device
CN102959610A (en) Display device and drive method for same
CN106971697A (en) Display device
CN106647072A (en) Array substrate, liquid crystal displayer and display device
CN108831402A (en) Display device and its driving method and voltage adjusting method
CN103325356A (en) Voltage regulation circuit of common electrode and display device
CN105489181B (en) Cut-in voltage supply circuit, method, defect analysis method and display device
CN106251824A (en) Common electrical voltage regulator circuit and common electric voltage control method, display panels
CN109509449A (en) Current regulating circuit, driving circuit and display device
CN101097702A (en) Voltage regulator

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant