CN107274841A - A kind of LED backlight drive integrated circult - Google Patents
A kind of LED backlight drive integrated circult Download PDFInfo
- Publication number
- CN107274841A CN107274841A CN201710682984.XA CN201710682984A CN107274841A CN 107274841 A CN107274841 A CN 107274841A CN 201710682984 A CN201710682984 A CN 201710682984A CN 107274841 A CN107274841 A CN 107274841A
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- electrochemical capacitor
- resistance
- circuit
- drive circuit
- power supply
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- 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]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
- G09G2320/062—Adjustment of illumination source parameters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a kind of LED backlight drive integrated circult, including sequential control circuit, column drive circuit, bias power switch power supply, gamma circuit, horizontal drive circuit and light-emitting diode display, the bias power switch power supply, gamma circuit, horizontal drive circuit and light-emitting diode display are sequentially connected, the sequential control circuit is connected with bias power switch power supply, the column drive circuit is connected with light-emitting diode display, sequential control circuit and the column drive circuit connection, the column drive circuit is also connected with bias power switch power supply, the sequential control circuit and column drive circuit are connected with horizontal drive circuit respectively.The present invention controls the back light system of light-emitting diode display by the combination of sequential control circuit, column drive circuit, bias power switch power supply, gamma circuit, horizontal drive circuit, so as to improve the uniformity and stability of light-emitting diode display backlight illumination, it is relatively low from chip cost simultaneously, can effectively reduce the cost of manufacture of batch production.
Description
Technical field
The present invention relates to display backlight driving, and in particular to a kind of LED backlight drive integrated circult.
Background technology
The novel information that LED display is the late nineteen eighties to be developed rapidly in the whole world shows media, display screen by
The tens of thousands of or even evenly distributed composition of hundreds of thousands semiconductor light-emitting-diode pixel.Difference can be manufactured using different materials
The LED pixel point of color.Most widely used at present is red, green, yellow.And the exploitation of blueness and pure green LED has reached
To the practical stage.LED display can show the numeral of change, word, graph image；It can be not only used for indoor environment also
It can be used for outdoor environment, have the advantages that projecting apparatus, video wall, LCDs are incomparable.It is short about ten years in,
LED dot matrix display screens are just with the excellent of brightness height, low operating voltage, small power consumption, miniaturization, long lifespan, impact resistance and performance stabilization
Point shoots up as the main product of FPD, is widely used in field of information display.
LED development prospect is extremely wide, at present just towards more high brightness, more high weather resistance, higher luminous density,
Higher uniformity of luminance, reliability, panchromaticization direction are developed.The application of LED display is related to many fields of social economy,
Mainly include：(1) securities trading, Financial Information are shown.(2) air station flight multidate information is shown.(3) harbour, station passenger are drawn
Lead presentation of information.(4) stadiums presentation of information.(5) Traffic Information is shown.(6) Dispatch and Command Center's presentation of information.
(7) service propaganda and presentation of information of the service field such as postal service, telecommunications, market shopping center.(8) advertising media's new product etc..
Whether the backlight drive direct display display content of light-emitting diode display is cheer and bright, and light-emitting diode display backlight meeting in the prior art
Occur brightness irregularities, it is unstable the problem of.
The content of the invention
The technical problems to be solved by the invention are that light-emitting diode display backlight illumination is uneven, unstable, it is therefore intended that provided
A kind of LED backlight drive integrated circult, improves the uniformity and stability of light-emitting diode display backlight illumination.
The present invention is achieved through the following technical solutions：
A kind of LED backlight drive integrated circult, including sequential control circuit, column drive circuit, bias power switch power supply,
Gamma circuit, horizontal drive circuit and light-emitting diode display, the bias power switch power supply, gamma circuit, horizontal drive circuit and LED
Display is sequentially connected, and the sequential control circuit is connected with bias power switch power supply, and the column drive circuit is shown with LED
Device is connected, and sequential control circuit and the column drive circuit connection, the column drive circuit also connects with bias power switch power supply
Connect, the sequential control circuit and column drive circuit are connected with horizontal drive circuit respectively；The sequential control circuit is used for for row
Drive circuit provides clock signal, and the column drive circuit and horizontal drive circuit are used to drive light-emitting diode display, and the bias is powered
Switching Power Supply is used for the power supply for producing different voltages；The gamma circuit is used for the luminance component according to entrained by picture element signal,
The gray scale voltage of generation carries out corresponding assignment to it so that be added to the pixel simulation drive signal of TFT source electrodes inside liquid crystal display
Precorrection is carried out, the gamma correction that image is shown is completed.
Further, bias power switch power supply includes switching power source chip U1, resistance R1, resistance R2, resistance R3, resistance
R4, resistance R5, resistance R6, electric capacity C1, electrochemical capacitor C2, electrochemical capacitor C3, electrochemical capacitor C4, electrochemical capacitor C5, electrochemical capacitor
C6, electrochemical capacitor C7, electrochemical capacitor C8, electrochemical capacitor C9, electrochemical capacitor C10, electric capacity C11, inductance L1, Schottky diode
D1, the switching power source chip U1 uses TPS65161；The positive pole of the electrochemical capacitor C2, electrochemical capacitor C3 positive pole, electrolysis
Electric capacity C4 positive pole is connected on TPS65161 20 pins and 21 pins, negative pole, the electrochemical capacitor C3 of the electrochemical capacitor C2
Negative pole, electrochemical capacitor C4 negative pole common ground, meanwhile, electrochemical capacitor C4 positive pole is connected with 12V power supplys；The electric capacity C1
One end connects TPS65161 217 pins, and the other end is connected with Schottky diode D1 negative electrode, Schottky diode D1 sun
Pole is grounded；TPS65161 18 pins are connected on the circuit that Schottky diode D1 is connected with electric capacity C1；Resistance R4 one end with
TPS65161 15 pins connection, its other end is connected with resistance R5, the other end ground connection at resistance R5 connection resistance R4 ends；It is described
Resistance R1, resistance R2 connect, and the other end at resistance R2 connection resistance R1 ends is connected to the circuit that resistance R4 is connected with TPS65161
On, the other end at resistance R1 connection resistance R2 ends is connected with resistance R3；Described inductance L2 one end is connected to Schottky diode D1
On the circuit being connected with electric capacity C1, its other end is connected on the circuit that resistance R1 is connected with resistance R3；The resistance R3 connections
The other end ground connection at resistance R1 ends；The electrochemical capacitor C5, electrochemical capacitor C6, electrochemical capacitor C7, electrochemical capacitor C8, electrochemical capacitor
C9, electrochemical capacitor C10 are connected in parallel on resistance R3 two ends, and electrochemical capacitor C5 positive pole, electrochemical capacitor C6 positive pole, electrochemical capacitor
C7 positive pole, electrochemical capacitor C8 positive pole, electrochemical capacitor C9 positive pole, electrochemical capacitor C10 positive pole be both connected to resistance R3 with
On the circuit of resistance R1 connections and connect 33V power supplys；Negative pole, electrochemical capacitor C6 negative pole, the electrochemical capacitor of the electrochemical capacitor C5
C7 negative pole, electrochemical capacitor C8 negative pole, electrochemical capacitor C9 negative pole, electrochemical capacitor C10 negative pole is grounded simultaneously；The inductance
L1 one end connects 33V positive supplies, and one end is connected with electrochemical capacitor C10 positive pole.
Further, bias power switch power supply produces tetra- kinds of voltages of VDD, VDA, VGL and VGH.
The present invention compared with prior art, has the following advantages and advantages：
The present invention passes through sequential control circuit, column drive circuit, bias power switch power supply, gamma circuit, row driving electricity
The back light system of the combination control light-emitting diode display on road, so as to improve the uniformity and stability of light-emitting diode display backlight illumination, together
When its from chip cost it is relatively low, can effectively reduce the cost of manufacture of batch production.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is present invention bias power switch power circuit schematic diagram；
Fig. 3 is present invention bias power switch power circuit equivalent schematic.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make
For limitation of the invention.
Embodiment
As shown in Figure 1 to Figure 3, a kind of LED backlight drive integrated circult, including sequential control circuit, column drive circuit, partially
Press power switch power supply, gamma circuit, horizontal drive circuit and light-emitting diode display, the bias power switch power supply, gamma circuit,
Horizontal drive circuit and light-emitting diode display are sequentially connected, and the sequential control circuit is connected with bias power switch power supply, and the row drive
Dynamic circuit is connected with light-emitting diode display, and the sequential control circuit and column drive circuit are connected, the column drive circuit also with bias
Power switch power supply is connected, and the sequential control circuit and column drive circuit are connected with horizontal drive circuit respectively；The sequential control
Circuit processed is used to provide clock signal for horizontal drive circuit, and the column drive circuit and horizontal drive circuit are used to drive LED to show
Device, the bias power switch power supply is used for the power supply for producing different voltages；The gamma circuit is used for according to picture element signal institute
The luminance component of carrying, the gray scale voltage of generation carries out corresponding assignment to it so that be added to the picture of TFT source electrodes inside liquid crystal display
Plain analog drive signal carries out precorrection, completes the gamma correction that image is shown.
Biasing power switch power supply includes switching power source chip U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance
R5, resistance R6, electric capacity C1, electrochemical capacitor C2, electrochemical capacitor C3, electrochemical capacitor C4, electrochemical capacitor C5, electrochemical capacitor C6, electrolysis
Electric capacity C7, electrochemical capacitor C8, electrochemical capacitor C9, electrochemical capacitor C10, electric capacity C11, inductance L1, Schottky diode D1, it is described to open
Powered-down source chip U1 uses TPS65161；The positive pole of the electrochemical capacitor C2, electrochemical capacitor C3 positive pole, electrochemical capacitor C4 are just
Pole is connected on TPS65161 20 pins and 21 pins, the negative pole of the electrochemical capacitor C2, electrochemical capacitor C3 negative pole, electrolysis
Electric capacity C4 negative pole common ground, meanwhile, electrochemical capacitor C4 positive pole is connected with 12V power supplys；Electric capacity C1 one end connection
TPS65161 217 pins, the other end is connected with Schottky diode D1 negative electrode, Schottky diode D1 plus earth；
TPS65161 18 pins are connected on the circuit that Schottky diode D1 is connected with electric capacity C1；Resistance R4 one end and TPS65161
The connection of 15 pins, its other end is connected with resistance R5, and the other end at resistance R5 connection resistance R4 ends is grounded；The resistance R1,
Resistance R2 is connected, and the other end at resistance R2 connection resistance R1 ends is connected on the circuit that resistance R4 is connected with TPS65161, resistance
The other end at R1 connection resistance R2 ends is connected with resistance R3；Described inductance L2 one end is connected to Schottky diode D1 and electric capacity C1
On the circuit of connection, its other end is connected on the circuit that resistance R1 is connected with resistance R3；The resistance R3 connections resistance R1 ends
The other end ground connection；The electrochemical capacitor C5, electrochemical capacitor C6, electrochemical capacitor C7, electrochemical capacitor C8, electrochemical capacitor C9, electrolysis
Electric capacity C10 is connected in parallel on resistance R3 two ends, and electrochemical capacitor C5 positive pole, electrochemical capacitor C6 positive pole, electrochemical capacitor C7 are just
Pole, electrochemical capacitor C8 positive pole, electrochemical capacitor C9 positive pole, electrochemical capacitor C10 positive pole are both connected to resistance R3 and resistance R1
On the circuit of connection and connect 33V power supplys；The negative pole of the electrochemical capacitor C5, electrochemical capacitor C6 negative pole, electrochemical capacitor C7 it is negative
Pole, electrochemical capacitor C8 negative pole, electrochemical capacitor C9 negative pole, electrochemical capacitor C10 negative pole are grounded simultaneously；Described inductance L1 one end
33V positive supplies are connected, one end is connected with electrochemical capacitor C10 positive pole.
Bias power switch power supply and produce VDA voltages.
The equivalent circuit of above-mentioned bias power switch power supply is as shown in figure 3, the switching tube of tandem tap power supply is integrated electricity
Q3 inside the TPS65161 of road, the course of work is as follows, when the signal that Q3 is received is in high level, TPS65161 22 pin input
12V voltages power to the load L2 through Q3, LP2 circulation, and due to the effect of self-induced e.m.f inside L2, (self-induced e.m.f direction is：Zuo Zheng
The right side is negative), due to flowing through the growth of L2 electric current linearly, output end voltage gradually rises, and linear increase electric current in L2
Portion is stored in the form of magnetic energy.
When the signal that Q3 is received is in low level, when output end voltage rises to 3.3V by pressure sampling circuit R1,
The voltage stabilizing that the sampling voltage of the pressure sampling circuit of R2, R4, R5 composition feeds back to TPS65161 controls 15 pin, and control Q3 disconnects,
At this moment the electric current of 12V input voltages formation is cut off；Electric current inside L2 is also turned off, and electric current is cut off the magnetic of L2 storage insides
It can not also can continue to, magnetic energy is to be rapidly converted to direction to bear right positive induced potential (Lenz's law) to be left, and this left side is negative
The direction of right positive induced potential just continues to flow through the R3 sense of current in high level time, due to Q3 disconnection,
The negative right positive induced potential in this left side continues to the power supply to load by L2, R3, D1 (fly-wheel diode) circulation.This is just
It is the process that VDD is produced, wherein due to the relatively low 3.3V of output voltage, sustained diode 1 employs the Schottky tube of low pressure drop.
The sequential control circuit uses TFT-LCD T-CON IC timing controllers for master chip, the row driving electricity
Road uses line driver part 8550, and the gamma circuit uses gray scale voltage generator, and the horizontal drive circuit is used
ULN2803。
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (3)
1. a kind of LED backlight drive integrated circult, it is characterised in that including sequential control circuit, column drive circuit, bias power supply
Switching Power Supply, gamma circuit, horizontal drive circuit and light-emitting diode display, the bias power switch power supply, gamma circuit, row driving
Circuit and light-emitting diode display are sequentially connected, and the sequential control circuit is connected with bias power switch power supply, the column drive circuit
It is connected with light-emitting diode display, sequential control circuit and the column drive circuit connection, the column drive circuit is also opened with bias power supply
Powered-down source connection；The sequential control circuit and column drive circuit are connected with horizontal drive circuit respectively；The sequential control circuit
For providing clock signal for horizontal drive circuit, the column drive circuit and horizontal drive circuit are used to drive light-emitting diode display, described
Bias power switch power supply is used for the power supply for producing different voltages；The gamma circuit is used for bright according to entrained by picture element signal
Component is spent, the gray scale voltage of generation carries out corresponding assignment to it so that the pixel simulation for being added to TFT source electrodes inside liquid crystal display drives
Dynamic signal carries out precorrection, completes the gamma correction that image is shown.
2. a kind of LED backlight drive integrated circult according to claim 1, it is characterised in that the bias power switch
Power supply includes switching power source chip U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electrolysis
Electric capacity C2, electrochemical capacitor C3, electrochemical capacitor C4, electrochemical capacitor C5, electrochemical capacitor C6, electrochemical capacitor C7, electrochemical capacitor C8, electrolysis
Electric capacity C9, electrochemical capacitor C10, electric capacity C11, inductance L1, Schottky diode D1, the switching power source chip U1 uses
TPS65161；Positive pole, electrochemical capacitor C3 positive pole, the electrochemical capacitor C4 positive pole of the electrochemical capacitor C2 is connected to TPS65161
20 pins and 21 pins on, the negative pole of the electrochemical capacitor C2, electrochemical capacitor C3 negative pole, electrochemical capacitor C4 negative pole it is common
Ground connection, meanwhile, electrochemical capacitor C4 positive pole is connected with 12V power supplys；Described electric capacity C1 one end connects TPS65161 217 pins,
The other end is connected with Schottky diode D1 negative electrode, Schottky diode D1 plus earth；TPS65161 18 pins connect
It is connected on the circuit that Schottky diode D1 is connected with electric capacity C1；Resistance R4 one end and TPS65161 15 pins connection, its is another
One end is connected with resistance R5, the other end ground connection at resistance R5 connection resistance R4 ends；The resistance R1, resistance R2 connect, resistance R2
The other end at connection resistance R1 ends is connected on the circuit that resistance R4 is connected with TPS65161, resistance R1 connection resistance R2 ends it is another
One end is connected with resistance R3；Described inductance L2 one end is connected on the circuit that Schottky diode D1 is connected with electric capacity C1, and its is another
One end is connected on the circuit that resistance R1 is connected with resistance R3；The other end ground connection at the resistance R3 connections resistance R1 ends；It is described
Electrochemical capacitor C5, electrochemical capacitor C6, electrochemical capacitor C7, electrochemical capacitor C8, electrochemical capacitor C9, electrochemical capacitor C10 are connected in parallel on resistance
R3 two ends, and electrochemical capacitor C5 positive pole, electrochemical capacitor C6 positive pole, electrochemical capacitor C7 positive pole, electrochemical capacitor C8 are just
Pole, electrochemical capacitor C9 positive pole, electrochemical capacitor C10 positive pole are both connected on the circuit that resistance R3 is connected with resistance R1 and connect
33V power supplys；The negative pole of the electrochemical capacitor C5, electrochemical capacitor C6 negative pole, electrochemical capacitor C7 negative pole, electrochemical capacitor C8 it is negative
Pole, electrochemical capacitor C9 negative pole, electrochemical capacitor C10 negative pole are grounded simultaneously；Described inductance L1 one end connects 33V positive supplies, one
End is connected with electrochemical capacitor C10 positive pole.
3. a kind of LED backlight drive integrated circult according to claim 1, it is characterised in that the bias power switch
Power supply produces tetra- kinds of voltages of VDD, VDA, VGL and VGH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682984.XA CN107274841A (en) | 2017-08-11 | 2017-08-11 | A kind of LED backlight drive integrated circult |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682984.XA CN107274841A (en) | 2017-08-11 | 2017-08-11 | A kind of LED backlight drive integrated circult |
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| Publication Number | Publication Date |
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| CN107274841A true CN107274841A (en) | 2017-10-20 |
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| CN201710682984.XA Pending CN107274841A (en) | 2017-08-11 | 2017-08-11 | A kind of LED backlight drive integrated circult |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417176A (en) * | 2018-05-10 | 2018-08-17 | 厦门强力巨彩光电科技有限公司 | A kind of LED lamp bead driving circuit and LED drive system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1617213A (en) * | 2003-11-13 | 2005-05-18 | Lg.菲利浦Lcd株式会社 | Method and apparatus for driving liquid crystal display |
| CN102340682A (en) * | 2010-07-14 | 2012-02-01 | 乐金显示有限公司 | Stereoscopic image display and method of controlling backlight thereof |
-
2017
- 2017-08-11 CN CN201710682984.XA patent/CN107274841A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1617213A (en) * | 2003-11-13 | 2005-05-18 | Lg.菲利浦Lcd株式会社 | Method and apparatus for driving liquid crystal display |
| CN102340682A (en) * | 2010-07-14 | 2012-02-01 | 乐金显示有限公司 | Stereoscopic image display and method of controlling backlight thereof |
Non-Patent Citations (2)
| Title |
|---|
| 苏成富: "液晶屏逻辑板TFT偏压电路分析", 《电子报》 * |
| 郝铭: "对"剖析液晶屏逻辑板TFT偏压电路"一文的一点看法（上）", 《家电维修技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417176A (en) * | 2018-05-10 | 2018-08-17 | 厦门强力巨彩光电科技有限公司 | A kind of LED lamp bead driving circuit and LED drive system |
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Application publication date: 20171020 |