CN106601186A - LED display optimization circuit - Google Patents
LED display optimization circuit Download PDFInfo
- Publication number
- CN106601186A CN106601186A CN201710081491.0A CN201710081491A CN106601186A CN 106601186 A CN106601186 A CN 106601186A CN 201710081491 A CN201710081491 A CN 201710081491A CN 106601186 A CN106601186 A CN 106601186A
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- array
- lamp bead
- row
- led
- power supply
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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]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses an LED display optimization circuit. The LED display circuit comprises an LED lamp bead array, a column driving array, a row driving switch array and a common-cathode discharge circuit, wherein the column driving array is used for providing column driving for lamp beads in the LED lamp bead array; the row driving switch array is used for providing row driving for the lamp beads in the LED lamp bead array; the common-cathode discharge circuit is connected in parallel with the row driving switch array; the common-cathode discharge circuit includes a stabilized-voltage power supply and at least one discharge unit; a first side of the at least one discharge unit is connected to a first side of the row driving switch array; a second side of the at least one discharge unit is connected to the stabilized-voltage power supply; the stabilized-voltage power supply is used for providing a backward voltage for the lamp bead array; and a backward voltage direction is opposite to a work voltage of the lamp bead array. In a correlation technology, when a product of a common-cathode display circuit is used to carry out displaying, a ghost is easy to generate. By using the circuit of the invention, the above technical problem is solved.
Description
Technical field
The present invention relates to circuit field, in particular to a kind of LED display optimizations circuit.
Background technology
Existing market Small Distance LED television is widely used in various public information display fields, such as transport information is observed
The information bulletin of room, hotel lobby, airport, movie theatre, hospital etc., and corporate image publicity, Cultural relics in museum displaying, meeting
The interior such as room, club, market, hall place, and the Small Distance LED television of a new generation also has begun to develop to domesticization, such as
Modern Small Distance LED television also gradually replaces LCD TV and is increasingly becoming main flow, and application prospect is quite varied.It is existing at present
The widely used or traditional mode of releasing of LED television product, i.e., using resistant series Zener diode mode.Current
In LED television industry, the display circuit in LED television from LED lamp bead array, arrange to driving battle array column and row to driving array and biography
The leadage circuit composition of system.LED lamp bead array is responsible for image and is shown, arranges to driving array to be mainly made up of constant current IC, is responsible for altogether
The negative electrode pin control of negative electrode LED lamp bead, row is mainly made up of to array NMOS arrays, is responsible for the negative electrode of common cathode LED lamp bead
Antenna array control, traditional leadage circuit is mainly made up of resistant series Zener diode, is responsible for unnecessary electricity and is released, due to LED
The presence of lamp bead array is frequently opened and closed, and unnecessary electricity is also there is on circuit in the time period closed, and this
A little unnecessary electricity will make LED lamp bead maintain certain brightness during shut-off LED, and these unnecessary electricity are for we
It is unwanted, so a special circuit is accomplished by come this part electricity of releasing, and traditional way is exactly to utilize resistance
The mode of series voltage stabilizing diode completes releasing for unnecessary electricity constituting leadage circuit, so as to the display for lifting LED television is imitated
Really.
For Small Distance LED shows product, there is following weak point using the existing mode of releasing：Normal condition is opened
Logical LED only forms over the ground path by constant-current source, and after LED is short-circuit, the lamp bead of other row is open-minded for existing mode of releasing
During path of releasing can over the ground be formed through Zener diode and resistance by the short-circuit LED, the electric current ratio that LED lamp bead passes through
Normally big, the brightness of the lamp bead of the row is increased, and shows LED television abnormal, i.e. our usually said short-circuit caterpillars
Phenomenon.
Easily occur the technical problem of ghost when showing for the product in correlation technique using common cathode display circuit,
Not yet propose effective solution at present.
The content of the invention
A kind of LED display optimizations circuit is embodiments provided, at least to solve to apply common cathode in correlation technique
The product of display circuit easily occurs the technical problem of ghost when showing.
One side according to embodiments of the present invention, there is provided a kind of LED display circuit, the LED display circuit includes：
LED lamp bead array；Row drive array, wherein, row drive the first side of array with the row of LED lamp bead array to being connected, and row drive
Second side joint power supply of dynamic array, row drive array to be used to provide to arrange to the lamp bead in LED lamp bead array to drive；Row driving switch
Array, wherein, the first side of row driving switch array and the row of LED lamp bead array to being connected, the of row driving switch array
Two side joints ground, row driving switch array is used to provide row driving to the lamp bead in LED lamp bead array；Common cathode leadage circuit, wherein,
Common cathode leadage circuit and row driving switch array in parallel, wherein, common cathode leadage circuit is released including regulated power supply and at least one
Unit, the first side of at least one vent unit is connected to the first side of row driving switch array, at least one vent unit
Second side is connected to regulated power supply, wherein, regulated power supply be used for lamp bead array provide backward voltage, the direction of backward voltage with
The running voltage of lamp bead array it is in opposite direction.
Further, LED lamp bead array includes N number of lamp bead row, and row driving switch array includes N number of switch, and N number of switch is used
In controlling N number of lamp bead row correspondingly.
Further, at least one vent unit includes N number of vent unit, the first side and N number of lamp bead of N number of vent unit
Row connects one to one.
Further, N number of switch includes first switch, and at least one vent unit includes the first vent unit, and first lets out
Putting unit includes：First resistor, first end is connected to the first end of first switch, wherein, the second end ground connection of first switch；The
One diode, negative pole is connected to the second end of first resistor, and positive pole is connected to regulated power supply.
Further, regulated power supply is connected by the first side with least one vent unit, the second side of regulated power supply
Ground connection.
Further, it is constant current IC arrays that row drive array.
Further, row driving switch array is NMOS tube array.
Further, regulated power supply is controllable regulated power supply, and LED display circuit also includes：Controller, with controllable voltage stabilizing electricity
Source is connected, and the output voltage values for controlling controllable regulated power supply are less than predetermined threshold value.
Another aspect according to embodiments of the present invention, additionally provides a kind of LED television, and the LED television is that Small Distance LED is electric
Depending on and including the present invention LED display circuit.
Another aspect according to embodiments of the present invention, additionally provides a kind of LED display, and the LED display is including this
Bright LED display circuit.
In embodiments of the present invention, by common cathode vent discharge in parallel on the row driving switch array in LED display circuit
Road come unnecessary electricity of releasing, wherein, common cathode leadage circuit includes regulated power supply and at least one vent unit, and at least one lets out
The first side for putting unit is connected to the first side of row driving switch array, and the second side of at least one vent unit is connected to voltage stabilizing
Power supply, solves the product in correlation technique using common cathode display circuit and easily occurs the technical problem of ghost when showing,
Further realize the technique effect in LED display circuit.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of a kind of optional LED display circuit according to embodiments of the present invention；
Fig. 2 is the schematic diagram of a kind of optional common cathode leadage circuit according to embodiments of the present invention.
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model of present invention protection
Enclose.
It should be noted that description and claims of this specification and the term " first " in above-mentioned accompanying drawing, "
Two " it is etc. the object for distinguishing similar, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating here or
Order beyond those of description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included.
According to the embodiment of the present application, there is provided a kind of LED display circuit.
Fig. 1 is the schematic diagram of a kind of optional LED display circuit according to embodiments of the present invention, as shown in figure 1, the LED
Display circuit includes LED lamp bead array 10, and row drive array 20, row driving switch array 30 and common cathode leadage circuit 40.
Multiple LED lamp beads of LED lamp bead array including regularly arranged distribution, multiple LED lamp beads look up point from capable side
Cloth looks up from the side of row and is scattered at least one lamp bead row at least one lamp bead row.LED lamp bead array constitutes LED and shows
The display portion of circuit.
Row drive array to be used to provide to arrange to the lamp bead in LED lamp bead array to drive, and row drive the first side of array and LED
To being connected, row drive the second side joint power supply of array to the row of lamp bead array.
Row driving switch array is used to providing row to the lamp bead in LED lamp bead array and drives, and the of row driving switch array
The row of side and LED lamp bead array to being connected, the second side joint ground of row driving switch array.
Common cathode leadage circuit and row driving switch array in parallel, wherein, common cathode leadage circuit is including regulated power supply and at least
One vent unit, the first side of at least one vent unit is connected to the first side of row driving switch array, and at least one lets out
The second side for putting unit is connected to regulated power supply.Wherein, regulated power supply is used to provide backward voltage, backward voltage to lamp bead array
Direction it is in opposite direction with the running voltage of lamp bead array.Common cathode leadage circuit is by regulated power supply to the lamp in lamp bead array
The cathode terminal of pearl applies reciprocal voltage, can raise the negative electrode terminal voltage of LED lamp bead, and for equivalent capacity reverse charging is provided
Path, the electricity released in equivalent capacity, when electricity is released to be completed, the voltage in equivalent capacity is 0V, and regulated power supply is electric
Road continues as equivalent capacity reverse charging, and when the magnitude of voltage of regulated power supply is flushed to, the voltage stabilization in equivalent capacity is at this
Magnitude of voltage is no longer raised, now one reverse electric capacity of LED lamp bead equivalent parallel, and LED lamp bead enters reverse blocking state.
The embodiment is more to release by common cathode leadage circuit in parallel on the row driving switch array in LED display circuit
Remaining electricity, wherein, common cathode leadage circuit includes regulated power supply and at least one vent unit, the of at least one vent unit
Side is connected to the first side of row driving switch array, and the second side of at least one vent unit is connected to regulated power supply, solves
Easily there is the technical problem of ghost when showing in product in correlation technique using common cathode display circuit, and then realizes
Technique effect in LED display circuit.
Alternatively, row driving switch array includes the row of multiple switch, the number of switch and the lamp bead row of LED lamp bead array
Number is identical, and each switchs a line lamp bead for controlling LED lamp bead array.Specifically, LED lamp bead array includes N number of lamp bead row,
Row driving switch array includes N number of switch, and N number of switch is used to control N number of lamp bead row correspondingly.
Correspondingly, at least one vent unit can include N number of vent unit, the first side and N number of lamp of N number of vent unit
Pearl row connects one to one, and the second side of N number of vent unit is connected to regulated power supply.
N number of switch includes first switch, and at least one vent unit includes the first vent unit, and the first vent unit can be with
Including：First resistor, first end is connected to the first end of first switch, wherein, the second end ground connection of first switch；One or two pole
Pipe, negative pole is connected to the second end of first resistor, and positive pole is connected to regulated power supply.Specifically, the electricity of above-mentioned common cathode leadage circuit
Line structure can as shown in Figure 2, and each vent unit includes a resistance and a diode.The first end of resistance and switch
First end be connected, the second end of switch ground connection.The negative pole of diode is connected to the second end of resistance, and the positive pole of diode connects
It is connected to regulated power supply 41.Regulated power supply 41 is connected by the first side with least one vent unit, and the second of regulated power supply 41
Side joint ground.
Alternatively, it is constant current IC arrays that row drive array.Constant current IC array portions provide the row of LED lamp bead and drive.
Alternatively, row driving switch array is NMOS tube array.NMOS tube array portion provides the row driving of LED lamp bead.
Alternatively, each NMOS tube is a switch, controls the opening and closing of a line LED lamp bead.
Alternatively, regulated power supply is controllable regulated power supply.Common cathode leadage circuit releases by controllable regulated power supply to realize,
It is applied in LED lamp bead come unnecessary electricity in suppression circuit by stable voltage reversal, is formed by LED lamp bead and released back
Road, so as to realize control of releasing.
LED display circuit can also include controller, and controller is connected with controllable regulated power supply, controllable steady for controlling
The output voltage values of voltage source are less than predetermined threshold value.To be not damaged by lamp bead, controllable regulated power supply can be controlled to lamp bead
The reverse voltage restraint of offer makes LED lamp bead reach off state rapidly within 1V, so as to reach the effect of unnecessary electricity of releasing
Really, the upper ghost phenomenon of reliable suppression LED television, makes display effect reach lifting well.
Alternatively, controller can also control the service time of LED lamp bead, and LED display circuit passes through controller timesharing wheel
The service time of stream switching LED lamp bead realizes the Dynamic Announce of picture, and in controller control row control NMOS tube one's own profession LED is opened
During the display of lamp bead, the row control NMOS tube of lastrow LED lamp bead turns off the lastrow lamp bead, in the process common cathode vent discharge
Road carries out electric discharge suppression to lastrow LED lamp bead, unnecessary electricity is only consumed on the circuit of circuit board, and not to LED
Pearl forms path.In the moment that LED is closed, NMOS tube is closed, and feeder ear reaches the anode tap of LED lamp bead by constant-current source, it
Afterwards ground level is flowed to by NMOS tube, now the anode tap and cathode terminal of LED lamp bead has capacity effect, existed in circuit many
There is an equivalent capacity in remaining electricity, LED lamp bead two ends, equivalent if not applying a voltage in the end of oppisite phase of LED lamp bead
Electricity on electric capacity will be discharged by LED lamp bead, make LED lamp bead maintaining lights state.
Above-mentioned employing controller controls the embodiment of controllable regulated power supply and can flexibly control leadage circuit by program
Voltage-stabilized power supply circuit output voltage values so as to output voltage can be adjusted, and for LED lamp bead the anti-of zone of reasonableness is provided
To voltage, with the rational discharge and recharge resistance of unification, allow the equivalent capacity of LED lamp bead to realize quick discharge and recharge, reach quick
Suppress the effect of the equivalent capacity both end voltage, enable LED lamp bead that balance is reached during being switched on and off, it can be ensured that
LED lamp bead is accurately lighted and extinguished.Back discharge can be prevented effectively from by series diode, while can also make to adopt being somebody's turn to do
The efficiency of the LED television of the LED display circuit of embodiment is guaranteed.The LED display circuit that the embodiment is provided Jing
Overtesting verifies that test proves feasible, and good application has been obtained on existing product, and can reach and let out well
Effect is put, makes the LED television display effect of LED display circuit provided using the embodiment more excellent.
The embodiment of the present application additionally provides a kind of LED television, and the LED television is for Small Distance LED television and including the present invention
LED display circuit.
Can be using voltage stabilizing electricity of releasing using the common cathode product Small Distance LED television of the LED display circuit of above-described embodiment
Source circuit eliminates the upper ghost of common cathode product Small Distance LED television, realizes that automatic discharging, discharge electricity amount are controllable, limit electric discharge side
To, discharge voltage scalable and velocity of discharge scalable.
The common cathode leadage circuit of the Small Distance LED television that the embodiment is provided can reliably suppress LED lamp bead abnormity point
Bright, so that control is more precisely, realization is released, and electricity is controllable, speed of releasing is controllable, discharge voltage value is controllable, electric by hardware
Automatic discharging is hindered, on year-on-year basis traditional leadage circuit can also reduce the power consumption of leadage circuit, effectively eliminate Small Distance LED television
Upper ghost phenomenon, improves the display effect of Small Distance LED television, reaches relatively perfect display effect.
The embodiment of the present application additionally provides a kind of LED display, and the LED display includes the LED display circuit of the present invention.
The order of above-mentioned the embodiment of the present application does not represent the quality of embodiment.
In above-described embodiment of the application, the description to each embodiment all emphasizes particularly on different fields, and does not have in certain embodiment
The part of detailed description, may refer to the associated description of other embodiment.In several embodiments provided herein, it should be appreciated that
Arrive, disclosed technology contents can be realized by another way.
The above is only the preferred implementation of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of without departing from the application principle, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (10)
1. a kind of LED display circuit, it is characterised in that include：
LED lamp bead array；
Row drive array, wherein, the row drive the row of the first side and the LED lamp bead array of array to being connected, described
Row drive the second side joint power supply of array, the row to drive array to be used to be driven to the lamp bead offer row in the LED lamp bead array
It is dynamic；
Row driving switch array, wherein, the row of the first side of the row driving switch array and the LED lamp bead array is to being connected
Connect, the second side joint ground of the row driving switch array, the row driving switch array is used in the LED lamp bead array
Lamp bead provides row and drives；
Common cathode leadage circuit, wherein, the common cathode leadage circuit and the row driving switch array in parallel, wherein, the common cathode
Leadage circuit includes regulated power supply and at least one vent unit, and the first side of at least one vent unit is connected to described
First side of row driving switch array, the second side of at least one vent unit is connected to the regulated power supply, wherein, institute
Regulated power supply is stated for providing backward voltage, the work of the direction of the backward voltage and the lamp bead array to the lamp bead array
Make the in opposite direction of voltage.
2. LED display circuit according to claim 1, it is characterised in that the LED lamp bead array includes N number of lamp bead row,
The row driving switch array includes N number of switch, described N number of to switch for controlling N number of lamp bead row correspondingly.
3. LED display circuit according to claim 2, it is characterised in that at least one vent unit includes N number of letting out
Unit is put, the first side of N number of vent unit connects one to one with N number of lamp bead row.
4. LED display circuit according to claim 3, it is characterised in that N number of switch includes first switch, described
At least one vent unit includes the first vent unit, and first vent unit includes：
First resistor, first end is connected to the first end of the first switch, wherein, the second end ground connection of the first switch；
First diode, negative pole is connected to the second end of the first resistor, and positive pole is connected to the regulated power supply.
5. LED display circuit according to claim 1, it is characterised in that the regulated power supply by the first side with it is described
At least one vent unit is connected, the second side joint ground of the regulated power supply.
6. LED display circuit according to claim 1, it is characterised in that it is constant current IC arrays that the row drive array.
7. LED display circuit according to claim 1, it is characterised in that the row driving switch array is NMOS tube battle array
Row.
8. LED display circuit according to claim 1, it is characterised in that the regulated power supply is controllable regulated power supply, institute
Stating LED display circuit also includes：
Controller, is connected with the controllable regulated power supply, and the output voltage values for controlling the controllable regulated power supply do not surpass
Cross predetermined threshold value.
9. a kind of LED television, it is characterised in that the LED television is Small Distance LED television and appoints including in claim 1 to 8
LED display circuit described in one.
10. a kind of LED display, it is characterised in that including the LED display circuit any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710081491.0A CN106601186A (en) | 2017-02-15 | 2017-02-15 | LED display optimization circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710081491.0A CN106601186A (en) | 2017-02-15 | 2017-02-15 | LED display optimization circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106601186A true CN106601186A (en) | 2017-04-26 |
Family
ID=58587561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710081491.0A Pending CN106601186A (en) | 2017-02-15 | 2017-02-15 | LED display optimization circuit |
Country Status (1)
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| CN (1) | CN106601186A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386258A (en) * | 2000-07-28 | 2002-12-18 | 日亚化学工业株式会社 | Drive circuit of display device and display device |
| CN1652182A (en) * | 2004-02-05 | 2005-08-10 | 东北先锋电子股份有限公司 | Drive device and drive method of light emitting display panel |
| CN1930601A (en) * | 2004-03-10 | 2007-03-14 | 罗姆股份有限公司 | Organic EL display device |
| CN1961345A (en) * | 2004-03-30 | 2007-05-09 | 富士胶片株式会社 | Light emission panel display device |
| CN101465094A (en) * | 2007-12-18 | 2009-06-24 | 立锜科技股份有限公司 | Column drive cell element and method for electroluminescence display |
| CN101751861A (en) * | 2010-01-13 | 2010-06-23 | 北京巨数数字技术开发有限公司 | LED display device |
| CN102272816A (en) * | 2008-11-05 | 2011-12-07 | 奈克斯特生物测定学公司 | Voltage reading technique for large sensor arrays through reduced noise differential path |
| CN102723055A (en) * | 2012-06-01 | 2012-10-10 | 深圳市明微电子股份有限公司 | LED display panel, system and equipment |
| CN103489408A (en) * | 2013-10-23 | 2014-01-01 | 苏州天微工业技术有限公司 | Display screen drive control circuit and display screen |
| CN105632399A (en) * | 2016-03-15 | 2016-06-01 | 俞德军 | Circuit and method for eliminating LED display screen ghost image and caterpillar phenomenon |
| CN205354617U (en) * | 2015-12-11 | 2016-06-29 | 深圳市绿源半导体技术有限公司 | LED display screen drive and control circuit |
| CN205595033U (en) * | 2016-03-17 | 2016-09-21 | 利亚德光电股份有限公司 | Display circuit |
| CN206961494U (en) * | 2017-02-15 | 2018-02-02 | 利亚德光电股份有限公司 | LED display circuit, LED television and LED display |
-
2017
- 2017-02-15 CN CN201710081491.0A patent/CN106601186A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386258A (en) * | 2000-07-28 | 2002-12-18 | 日亚化学工业株式会社 | Drive circuit of display device and display device |
| CN1652182A (en) * | 2004-02-05 | 2005-08-10 | 东北先锋电子股份有限公司 | Drive device and drive method of light emitting display panel |
| CN1930601A (en) * | 2004-03-10 | 2007-03-14 | 罗姆股份有限公司 | Organic EL display device |
| CN1961345A (en) * | 2004-03-30 | 2007-05-09 | 富士胶片株式会社 | Light emission panel display device |
| CN101465094A (en) * | 2007-12-18 | 2009-06-24 | 立锜科技股份有限公司 | Column drive cell element and method for electroluminescence display |
| CN102272816A (en) * | 2008-11-05 | 2011-12-07 | 奈克斯特生物测定学公司 | Voltage reading technique for large sensor arrays through reduced noise differential path |
| CN101751861A (en) * | 2010-01-13 | 2010-06-23 | 北京巨数数字技术开发有限公司 | LED display device |
| CN102723055A (en) * | 2012-06-01 | 2012-10-10 | 深圳市明微电子股份有限公司 | LED display panel, system and equipment |
| CN103489408A (en) * | 2013-10-23 | 2014-01-01 | 苏州天微工业技术有限公司 | Display screen drive control circuit and display screen |
| CN205354617U (en) * | 2015-12-11 | 2016-06-29 | 深圳市绿源半导体技术有限公司 | LED display screen drive and control circuit |
| CN105632399A (en) * | 2016-03-15 | 2016-06-01 | 俞德军 | Circuit and method for eliminating LED display screen ghost image and caterpillar phenomenon |
| CN205595033U (en) * | 2016-03-17 | 2016-09-21 | 利亚德光电股份有限公司 | Display circuit |
| CN206961494U (en) * | 2017-02-15 | 2018-02-02 | 利亚德光电股份有限公司 | LED display circuit, LED television and LED display |
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