CN101750774A - Common electrode voltage compensation driving device - Google Patents
Common electrode voltage compensation driving device Download PDFInfo
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- CN101750774A CN101750774A CN200810227519A CN200810227519A CN101750774A CN 101750774 A CN101750774 A CN 101750774A CN 200810227519 A CN200810227519 A CN 200810227519A CN 200810227519 A CN200810227519 A CN 200810227519A CN 101750774 A CN101750774 A CN 101750774A
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Abstract
The invention discloses a common electrode voltage compensation driving device, which belongs to the field of liquid crystal displays and aims to solve the problem of the screen flicker of the liquid crystal display caused by a difference between voltages at the two ends of liquid crystals on each pixel point due to the resistance relay of a common electrode. By making equal voltage drops from a common electrode voltage driving circuit of the liquid crystal display to each transfer electrode, the common electrode voltage compensation driving device adjusts common electrode voltage on the transfer electrode and compensates the voltage drops from the common electrode to each transfer electrode to ensure that the common electrode voltages on each transfer electrode on the liquid crystal display are the same, so that the common electrode voltages of each pixel point on the liquid crystal display are approximately balanced, and the screen flicker of the liquid crystal display caused by the imbalance of the common electrode voltages is avoided.
Description
Technical field
The present invention relates to field of liquid crystal, relate in particular to a kind of common electrode voltage compensation driving device.
Background technology
LCDs comprises the liquid crystal between lower glass substrate, top glass substrate and the last lower glass substrate; Described top glass substrate is equipped with colored filter and transparency electrode (ITO), and colored filter can make the display screen display color, and transparency electrode is exactly the public electrode of liquid crystal pixel point; Described lower glass substrate is manufactured with thin film transistor (TFT) array, all corresponding thin film transistor (TFT) of each pixel, and what an end of this thin film transistor (TFT) connected is pixel electrode.The corresponding pixel of each thin film transistor (TFT); Liquid crystal molecule between pixel electrode and the top glass substrate transparency electrode is subjected to the control of electric field between pixel electrode and the public electrode.Above-mentioned public electrode, promptly transparency electrode is connected with lower glass substrate by the transfer electrode on the display screen, is connected with driving circuit by the lead-in wire on the lower glass substrate, flexible circuitry film again.
Also be equipped with polaroid on the described upper substrate, under the infrabasal plate, when light passes through described polaroid, can form polarized light; This polarized light can see through liquid crystal molecule.By regulating the power of electric field between pixel electrode and the public electrode, can control the angle of inclination of liquid crystal molecule, thereby the rotation of control polarized light changes the transmitance of light, forms different images.
Traditional public electrode voltages drive unit, as shown in Figure 1, at the PCB of LCDs (Printedcircuit board, printed circuit board (PCB)) is equipped with public electrode voltages driving circuit 102 on the plate 101, public electrode voltages driving circuit 102 output public electrode voltages, be connected to by the flexible circuitry film (COF) 104 that attaches active drive integrated circult in the transfer electrode (E, F, G, H) of display screen lower end, transfer electrode E, F, G, H are near the flexible circuitry film; Be connected to by the metal lead wire on the infrabasal plate 106 in the transfer electrode (A, B, C, D) of display screen upper end.Traditional public electrode voltages drive unit also comprises metal lead wire 106, transfer electrode A107, upper substrate 107, turntable driving integrated circuit 106 and the display screen 103 of infrabasal plate 105, transfer electrode A to 102.
Transfer electrode A, B, C, D and transfer electrode E, F, G, H place the display screen upper and lower end respectively.As can be seen from Figure 1, the voltage that comes out from same public electrode voltages driving circuit 102, to transfer electrode A, B, C, D point need be at the glass substrate upward wiring, because metal lead wire is the very thin film of one deck, so there is certain lead resistance, as shown in Figure 2, the transfer electrode in left side was held at S by the flexible circuit board in left side and the contact point of lower glass substrate on we supposed, then transfer electrode A point is connected with pcb board by metal lead wire SA; Transfer electrode B point is connected with pcb board by the SB lead-in wire; The transfer electrode on right side, same upper end is held at T by the flexible circuit board on right side and the contact point of lower glass substrate, and then transfer electrode C point then is connected with pcb board by lead-in wire TC, and transfer electrode D point then is connected with pcb board by TD.R1 is the equivalent resistance of SA metal lead wire; R2 is the equivalent resistance of TD metal lead wire, and R3 is the equivalent resistance of the metal lead wire between the AB, and R4 is the equivalent resistance of the metal lead wire between the BC, and R5 is the equivalent resistance of the metal lead wire between the CD.And transfer electrode E, the F of lower end, G, H each point be because near wiring board, so E, F, G, H each point can be ignored to the lead resistance between the public electrode voltages driving circuit 102.Though transfer electrode A, B, C, D, E, F, G, the public electrode voltages that H is ordered all is to be provided by same public electrode voltages driving circuit 102, but public electrode voltages could arrive A through the lead resistance on the wiring board, B, C, D, and arrival E, F, G, H does not need through the lead resistance on the wiring board, lead resistance can cause certain pressure drop, institute is so that transfer electrode A, B, C, the public electrode voltages that D is ordered is less than transfer electrode E, F, G, the public electrode voltages that H is ordered, cause on the display screen, the difference of lower end public electrode voltages, so the public electrode voltages on the arrival pixels of display screen also can there are differences, LCDs is easy to generate scintillation like this.
Summary of the invention
In order to solve in the prior art because the public electrode voltages voltage of LCDs upper and lower end transfer electrode point there are differences the problem that causes film flicker, the present invention by the following technical solutions:
The invention provides a kind of common electrode voltage compensation driving device.
Common electrode voltage compensation driving device of the present invention, comprise display screen, public electrode voltages driving circuit, the top and bottom of display screen respectively are provided with plural transfer electrode, it is characterized in that: each transfer electrode is connected by conductor with described public electrode voltages driving circuit, and the public electrode voltages driving circuit is equal to the voltage drop of each transfer electrode.
Common electrode voltage compensation driving device of the present invention, each transfer electrode is connected by conductor with described public electrode voltages driving circuit, is specially: each transfer electrode all directly is connected by first conductor respectively with described public electrode voltages driving circuit.Described first conductor can be the metal lead wire of identical cross-section, equal length; Also can be the metal lead wire of different length, varying cross-section; Perhaps be composed in series for metal lead wire and resistance.
Common electrode voltage compensation driving device of the present invention, each transfer electrode is connected by conductor with described public electrode voltages driving circuit, specifically can also for: be provided with the public electrode voltages lead that a circle is connected with described public electrode voltages driving circuit at the fringe region of display screen, each transfer electrode is connected with the public electrode voltages lead by second conductor again.Described second conductor can be the metal lead wire of identical cross-section, different length; Also can be the metal lead wire of varying cross-section, similar and different length; Perhaps be composed in series for metal lead wire and resistance.
Voltage drop all equates between each transfer electrode and the public electrode voltages driving circuit by making in the present invention, because the public electrode voltages driving circuit is identical to the voltage drop between each transfer electrode, therefore the public electrode voltages of each transfer electrode place also is identical on the LCDs, thereby the public electrode voltages that makes each pixel on the LCDs has avoided LCDs owing to the uneven film flicker that causes of public electrode voltages near balance.
Description of drawings
Figure 1 shows that public electrode voltages drive unit block diagram of the prior art;
Figure 2 shows that in the prior art public electrode voltages drive unit synoptic diagram of representing the resistance that goes between between transfer electrode and the public electrode voltages driving circuit with equivalent resistance;
Figure 3 shows that public electrode voltages drives and the position view of transfer electrode on display screen;
Figure 4 shows that the common electrode voltage compensation driving device synoptic diagram of first embodiment of the invention;
Figure 5 shows that the common electrode voltage compensation driving device synoptic diagram of second embodiment of the invention;
Figure 6 shows that the common electrode voltage compensation driving device synoptic diagram of third embodiment of the invention;
Figure 7 shows that the common electrode voltage compensation driving device synoptic diagram of fourth embodiment of the invention;
Figure 8 shows that the common electrode voltage compensation driving device synoptic diagram of fifth embodiment of the invention;
Figure 9 shows that the common electrode voltage compensation driving device synoptic diagram of sixth embodiment of the invention.
Embodiment
Figure 3 shows that public electrode voltages drives and the position view of transfer electrode on display screen in the common electrode voltage compensation driving device.This common electrode voltage compensation driving device comprises: pcb board 101 is equipped with public electrode voltages driving circuit 102 and the flexible circuitry film 104 that attaches active drive integrated circult on this pcb board 101; Driver circuit plate 101 is connected by flexible circuitry film 104 with lower glass substrate 105; Be equipped with top glass substrate 107 on the lower glass substrate 105; Be full of liquid crystal between infrabasal plate 105 and the upper substrate 107; There are transfer electrode A, B, C, D etc. in the upper end of LCDs pixel region 103; There are transfer electrode E, F, G, H etc. in the lower end; Public electrode voltages on the printed-wiring board (PWB) is connected to by the lead-in wire on flexible circuitry film, the lower glass substrate, transfer electrode on the transparency electrode of top glass substrate of pixel, promptly on the public electrode of pixel; The right-hand member of display screen is equipped with turntable driving integrated circuit 106.
In this device, by public electrode voltages driving circuit 102 output public electrode voltages, public electrode voltages driving circuit 102 is connected with transfer electrode A, B, C, D, E, F, G, H by conductor.
The public electrode voltages owing to LCDs upper and lower end transfer electrode point there are differences the problem that causes film flicker in the prior art in order to solve, and the invention provides a kind of common electrode voltage compensation driving device.
Common electrode voltage compensation driving device of the present invention, comprise display screen, public electrode voltages driving circuit, the top and bottom of display screen respectively are provided with plural transfer electrode, it is characterized in that: each transfer electrode is connected by conductor with described public electrode voltages driving circuit, and the public electrode voltages driving circuit is equal to the voltage drop of each transfer electrode.
Common electrode voltage compensation driving device of the present invention, each transfer electrode is connected by conductor with described public electrode voltages driving circuit, is specially: each transfer electrode all directly is connected by first conductor respectively with described public electrode voltages driving circuit.
Common electrode voltage compensation driving device of the present invention, each transfer electrode is connected by conductor with described public electrode voltages driving circuit, specifically can also for: be provided with the public electrode voltages lead that a circle is connected with described public electrode voltages driving circuit at the fringe region of display screen, each transfer electrode is connected with the public electrode voltages lead by second conductor again.
Embodiment one:
As shown in Figure 4, be the first embodiment of the present invention.In the present embodiment, each transfer electrode on the glass substrate is connected with public electrode voltages driving circuit 102 by first conductor respectively, and wherein first conductor is specially metal lead wire.Transfer electrode A point is connected with pcb board by metal lead wire SA, and transfer electrode B point is connected with pcb board by metal lead wire SB, and transfer electrode C point is connected with pcb board by metal lead wire TC, and transfer electrode D point is connected with pcb board by metal lead wire TD.Transfer electrode E point is connected with pcb board by metal lead wire SE, and transfer electrode F point is connected with pcb board by metal lead wire SF, and transfer electrode G point is connected with pcb board by metal lead wire TG, and transfer electrode H point is connected with pcb board by metal lead wire TH.
Metal lead wire SA, SB, TC, TD, SE, SF, TG, TH are the metal lead wire of same material, identical cross-section, equal length, so the resistance value of metal lead wire SA, SB, TC, TD, SE, SF, TG, TH equates.Transfer electrode A, B, C, D, E, F, G, H equate with resistance value between the public electrode voltages driving circuit like this, public electrode voltages also equates in these ohmically pressure drops, public electrode voltages in each transfer electrode equates like this, thereby display screen upper end transfer electrode voltage and lower end transfer electrode voltage equate, so the voltage on the arrival pixels of display screen just can not there are differences, and will significantly reduce phenomenon of picture flicker.
Simultaneously in design, because the resistance of metal lead wire has reduced the driving force of public electrode voltages driving circuit to the LCDs public electrode, therefore in the scope of display area permission, should reduce the length of metal lead wire as much as possible, reduce the resistance value between transfer electrode and the public electrode voltages driving circuit.As seen from Figure 4, the distance between transfer electrode B, C and the public electrode voltages driving circuit all equals the length of each metal lead wire to distance between transfer electrode B, C and the public electrode voltages driving circuit farthest.So just reduce public electrode voltages in these ohmically pressure drops as far as possible, can save the power consumption of LCDs.
Embodiment two:
As shown in Figure 5, be the second embodiment of the present invention.In the present embodiment, each transfer electrode on the glass substrate is connected with public electrode voltages driving circuit 102 by first conductor respectively, and wherein first conductor is specially metal lead wire.Transfer electrode A point is connected with pcb board by metal lead wire SA, and transfer electrode B point is connected with pcb board by metal lead wire SB, and transfer electrode C point is connected with pcb board by metal lead wire TC, and transfer electrode D point is connected with pcb board by metal lead wire TD.Transfer electrode E point is connected with pcb board by metal lead wire SE, and transfer electrode F point is connected with pcb board by metal lead wire SF, and transfer electrode G point is connected with pcb board by metal lead wire TG, and transfer electrode H point is connected with pcb board by metal lead wire TH.
Wherein, SA, SB, TC, TD, SE, SF, TG, TH are the metal lead wire of same material, varying cross-section, different length.Because metal lead wire generally is to be formed through over etching by the layer of metal film that deposits, so the varying cross-section of indication generally is meant the metal lead wire that the line height is identical, live width is different here.Adjust the length and the cross-sectional area of metal lead wire according to the resistance of metal lead wire and its length is directly proportional and its cross-sectional area is inversely proportional to the law of resistance, the resistance value of metal lead wire SA, SB, TC, TD, SE, SF, TG, TH is equated.Transfer electrode A, B, C, D, E, F, G, H equate with resistance value between the public electrode voltages driving circuit like this, public electrode voltages also equates in these ohmically pressure drops, public electrode voltages in each transfer electrode equates like this, thereby display screen upper end transfer electrode voltage and lower end transfer electrode voltage equate, so the voltage on the arrival pixels of display screen just can not there are differences, and will significantly reduce phenomenon of picture flicker.
Simultaneously in design, because the resistance of metal lead wire has reduced the driving force of public electrode voltages driving circuit to the LCDs public electrode, therefore in the scope of display area permission, should reduce the resistance value of metal lead wire as much as possible, thereby reduce the resistance value between transfer electrode and the public electrode voltages driving circuit.As seen from Figure 5, distance between transfer electrode B, C and the public electrode voltages driving circuit farthest, so the cross-sectional area of metal lead wire SB, TC is maximum in all metal lead wires, in the scope of display area permission, increase the cross-sectional area of metal lead wire SB, TC as much as possible, and the resistance value of other metal lead wires is equated with metal lead wire SB, TC.So just reduced the resistance value of metal lead wire as far as possible, reduced public electrode voltages, can save the power consumption of LCDs in these ohmically pressure drops.
Embodiment three:
As shown in Figure 6, be the third embodiment of the present invention.In the present embodiment, each transfer electrode on the glass substrate is connected with public electrode voltages driving circuit 102 by first conductor respectively, and wherein first conductor is specially metal lead wire and resistance is composed in series; Preferably first conductor is specially the metal lead wire of same material, identical cross-section and the resistance of different resistances is composed in series in the present embodiment.Because the distance between transfer electrode B, C and the public electrode voltages driving circuit farthest, in order to reduce the resistance value between each transfer electrode and the public electrode voltages driving circuit as far as possible, so only is connected between transfer electrode B, C and the public electrode voltages driving circuit, not resistance in series (promptly Chuan Lian resistance is zero) with metal lead wire.Transfer electrode A point is connected with pcb board by metal lead wire SA, and transfer electrode B point is connected with pcb board by metal lead wire SB, and transfer electrode C point is connected with pcb board by metal lead wire TC, and transfer electrode D point is connected with pcb board by metal lead wire TD.Transfer electrode E point is connected with pcb board by metal lead wire SE, and transfer electrode F point is connected with pcb board by metal lead wire SF, and transfer electrode G point is connected with pcb board by metal lead wire TG, and transfer electrode H point is connected with pcb board by metal lead wire TH.Be in series with resistance R on the metal lead wire SA
1, be in series with resistance R on the metal lead wire TD
2, be in series with resistance R on the metal lead wire SE
3, be in series with resistance R on the metal lead wire SF
4, be in series with resistance R on the metal lead wire TG
5, be in series with resistance R on the metal lead wire TH
6Metal lead wire SA and resistance R
1The resistance value sum be R
A, the resistance value of metal lead wire SB is R
B, the resistance value of metal lead wire TC is R
C, metal lead wire TD and resistance R
2The resistance value sum be R
D, metal lead wire SE and resistance R
3The resistance value sum be R
E, metal lead wire SF and resistance R
4The resistance value sum be R
F, metal lead wire TG and resistance R
5The resistance value sum be R
G, metal lead wire TH and resistance R
6The resistance value sum be R
H
By adjusting the resistance value size of the resistance of connecting on the metal lead wire, make R
A=R
B=R
C=R
D=R
E=R
F=R
G=R
HTransfer electrode A, B, C, D, E, F, G, H equate with resistance value between the public electrode voltages driving circuit like this, public electrode voltages also equates in these ohmically pressure drops, public electrode voltages in each transfer electrode equates like this, thereby display screen upper end transfer electrode voltage and lower end transfer electrode voltage equate, so the voltage on the arrival pixels of display screen just can not there are differences, and will significantly reduce phenomenon of picture flicker.
Simultaneously in design, since between public electrode voltages driving circuit and the transfer electrode resistance reduced the driving force of public electrode voltages driving circuit to the LCDs public electrode, therefore in the scope of display area permission, increase the cross-sectional area of metal lead wire SB, TC as much as possible, make R like this
B, R
CValue minimize, can also adopt the less metal material of resistance to make metal lead wire certainly, perhaps reduce the length of metal lead wire SB, TC as far as possible, reduce R
B, R
CValue, thereby decrease R
A, R
D, R
E, R
F, R
G, R
HValue.So just reduce public electrode voltages in these ohmically pressure drops as far as possible, can save the power consumption of LCDs.
Embodiment four:
As shown in Figure 7, be the fourth embodiment of the present invention.In the present embodiment, be provided with the public electrode voltages lead that a circle is connected with the public electrode voltages driving circuit at the fringe region of display screen, each transfer electrode on the glass substrate is connected with this public electrode voltages lead by second conductor respectively.Wherein, second conductor is specially metal lead wire.Transfer electrode A point is connected with the public electrode voltages lead by metal lead wire IA, transfer electrode B point is connected with the public electrode voltages lead by metal lead wire JB, transfer electrode C point is connected with the public electrode voltages lead by metal lead wire KC, transfer electrode D point is connected with the public electrode voltages lead by metal lead wire LD, transfer electrode E point is connected with the public electrode voltages lead by metal lead wire ME, transfer electrode F point is connected with the public electrode voltages lead by metal lead wire NF, transfer electrode G point is connected with the public electrode voltages lead by metal lead wire OG, and transfer electrode H point is connected with the public electrode voltages lead by metal lead wire PH.
Metal lead wire IA, JB, KC, LD, ME, NF, OG, PH are the metal lead wire of same material, identical cross-section, different length.By adjusting the length of metal lead wire IA, JB, KC, LD, ME, NF, OG, PH, the voltage drop that makes public electrode voltages arrive transfer electrode A, B, C, D, E, F, G, H all equates, public electrode voltages in each transfer electrode equates like this, thereby display screen upper end transfer electrode voltage and lower end transfer electrode voltage equate, so the voltage on the arrival pixels of display screen just can not there are differences, and will significantly reduce phenomenon of picture flicker.
Simultaneously in design, because the resistance that exists between transfer electrode and the public electrode voltages driving circuit has reduced the driving force of public electrode voltages driving circuit to the LCDs public electrode, therefore in the scope of display area permission, should reduce the length of metal lead wire as much as possible, certainly can also adopt the less metal material of resistance to make metal lead wire, reduce the resistance value of metal lead wire between transfer electrode and the public electrode voltages lead, thereby reduce the resistance value between transfer electrode and the public electrode voltages driving circuit, so just reduced the pressure drop of public electrode voltages as far as possible, can save the power consumption of LCDs to transfer electrode.
Embodiment five:
As shown in Figure 8, be the fifth embodiment of the present invention.In the present embodiment, be provided with the public electrode voltages lead that a circle is connected with the public electrode voltages driving circuit at the fringe region of display screen, each transfer electrode on the glass substrate is connected with this public electrode voltages lead by second conductor respectively.Wherein, second conductor is specially metal lead wire.Transfer electrode A point is connected with the public electrode voltages lead by metal lead wire IA, transfer electrode B point is connected with the public electrode voltages lead by metal lead wire JB, transfer electrode C point is connected with the public electrode voltages lead by metal lead wire KC, transfer electrode D point is connected with the public electrode voltages lead by metal lead wire LD, transfer electrode E point is connected with the public electrode voltages lead by metal lead wire ME, transfer electrode F point is connected with the public electrode voltages lead by metal lead wire NF, transfer electrode G point is connected with the public electrode voltages lead by metal lead wire OG, and transfer electrode H point is connected with the public electrode voltages lead by metal lead wire PH.
Metal lead wire IA, JB, KC, LD, ME, NF, OG, PH are the metal lead wire of same material, varying cross-section, similar and different length.Because metal lead wire generally is to be formed through over etching by the layer of metal film that deposits, so the varying cross-section of indication generally is meant the metal lead wire that the line height is identical, live width is different here.Adjust the length and the live width of metal lead wire according to the resistance of metal lead wire and its length is directly proportional and its cross-sectional area is inversely proportional to the law of resistance, the metal lead wire public electrode voltages is all equated to the voltage drop of transfer electrode A, B, C, D, E, F, G, H, public electrode voltages in each transfer electrode equates like this, thereby display screen upper end transfer electrode voltage and lower end transfer electrode voltage equate, so the voltage on the arrival pixels of display screen just can not there are differences, and will significantly reduce phenomenon of picture flicker.
Because the resistance that exists between transfer electrode and the public electrode voltages driving circuit has reduced the driving force of public electrode voltages driving circuit to the LCDs public electrode, therefore in the scope of display area permission, should increase the cross-sectional area of metal lead wire as much as possible, promptly increase the live width of metal lead wire, certainly can also reduce the length of metal lead wire as much as possible, perhaps adopt the less metal material of resistance to make metal lead wire, so just reduced the resistance value of metal lead wire, reduced the resistance value of metal lead wire between transfer electrode and the public electrode voltages lead, thereby reduced the resistance value between transfer electrode and the public electrode voltages driving circuit, reduced the pressure drop of public electrode voltages, can save the power consumption of LCDs to transfer electrode.
Embodiment six:
As shown in Figure 9, be the sixth embodiment of the present invention.In the present embodiment, be provided with the public electrode voltages lead that a circle is connected with the public electrode voltages driving circuit at the fringe region of display screen, each transfer electrode on the glass substrate is connected with this public electrode voltages lead by second conductor respectively.Wherein, second conductor is specially metal lead wire and resistance is composed in series.Preferably second conductor is specially the metal lead wire of same material, identical cross-section and the resistance of different resistances is composed in series in the present embodiment.Transfer electrode A point is connected with the public electrode voltages lead by metal lead wire IA, transfer electrode B point is connected with the public electrode voltages lead by metal lead wire JB, transfer electrode C point is connected with the public electrode voltages lead by metal lead wire KC, transfer electrode D point is connected with the public electrode voltages lead by metal lead wire LD, transfer electrode E point is connected with the public electrode voltages lead by metal lead wire ME, transfer electrode F point is connected with the public electrode voltages lead by metal lead wire NF, transfer electrode G point is connected with the public electrode voltages lead by metal lead wire OG, and transfer electrode H point is connected with the public electrode voltages lead by metal lead wire PH.Be in series with resistance R on the metal lead wire IA
1, be in series with resistance R on the metal lead wire JB
2, be in series with resistance R on the metal lead wire KC
3, be in series with resistance R on the metal lead wire LD
4, be in series with resistance R on the metal lead wire ME
5, be in series with resistance R on the metal lead wire NF
6, be in series with resistance R on the metal lead wire OG
7, be in series with resistance R on the metal lead wire PH
8
The resistance value size of the resistance of connecting on length by adjusting metal lead wire and the metal lead wire, the voltage drop that makes public electrode voltages arrive transfer electrode A, B, C, D, E, F, G, H all equates, public electrode voltages in each transfer electrode equates like this, thereby display screen upper end transfer electrode voltage and lower end transfer electrode voltage equate, so the voltage on the arrival pixels of display screen just can not there are differences, and will significantly reduce phenomenon of picture flicker.
Simultaneously in design, because the resistance that exists between transfer electrode and the public electrode voltages driving circuit has reduced the driving force of public electrode voltages driving circuit to the LCDs public electrode, therefore in the scope of display area permission, should reduce the length of metal lead wire or the resistance of resistance in series as much as possible, certainly can also adopt the less metal material of resistance to make metal lead wire, perhaps resistance in series not on the longest metal lead wire of length, so just reduced the resistance value of metal lead wire between transfer electrode and the public electrode voltages lead, thereby reduced the resistance value between transfer electrode and the public electrode voltages driving circuit, reduced the pressure drop of public electrode voltages, can save the power consumption of LCDs to transfer electrode.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (9)
1. common electrode voltage compensation driving device, comprise display screen, public electrode voltages driving circuit, the top and bottom of display screen respectively are provided with plural transfer electrode, it is characterized in that: each transfer electrode is connected by conductor with described public electrode voltages driving circuit, and the public electrode voltages driving circuit is equal to the voltage drop of each transfer electrode.
2. common electrode voltage compensation driving device according to claim 1, each transfer electrode is connected by conductor with described public electrode voltages driving circuit, is specially: each transfer electrode all directly is connected by first conductor respectively with described public electrode voltages driving circuit.
3. common electrode voltage compensation driving device according to claim 2 is characterized in that: described first conductor is the metal lead wire of identical cross-section, equal length.
4. common electrode voltage compensation driving device according to claim 2 is characterized in that, described first conductor is the metal lead wire of different length, varying cross-section.
5. common electrode voltage compensation driving device according to claim 2 is characterized in that, described first conductor is that metal lead wire and resistance are composed in series.
6. common electrode voltage compensation driving device according to claim 1, each transfer electrode is connected by conductor with described public electrode voltages driving circuit, be specially: the fringe region at display screen is provided with the public electrode voltages lead that a circle is connected with described public electrode voltages driving circuit, and each transfer electrode is connected with the public electrode voltages lead by second conductor again.
7. common electrode voltage compensation driving device according to claim 6 is characterized in that: described second conductor is the metal lead wire of identical cross-section, different length.
8. common electrode voltage compensation driving device according to claim 6 is characterized in that: described second conductor is the metal lead wire of varying cross-section, similar and different length.
9. common electrode voltage compensation driving device according to claim 6 is characterized in that: described second conductor is that metal lead wire and resistance are composed in series.
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| CN200810227519A CN101750774A (en) | 2008-11-27 | 2008-11-27 | Common electrode voltage compensation driving device |
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|---|---|---|---|
| CN200810227519A CN101750774A (en) | 2008-11-27 | 2008-11-27 | Common electrode voltage compensation driving device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314011A (en) * | 2011-09-06 | 2012-01-11 | 深圳市华星光电技术有限公司 | Liquid crystal display (LCD) driving circuit, data driving chip, liquid crystal panel and liquid crystal display device |
| CN107450777A (en) * | 2017-08-15 | 2017-12-08 | 京东方科技集团股份有限公司 | A kind of touch base plate and preparation method thereof, contact panel, display device |
| CN109036255A (en) * | 2018-09-30 | 2018-12-18 | 厦门天马微电子有限公司 | A kind of display driving method, display drive apparatus and display equipment |
| CN110675819A (en) * | 2019-09-02 | 2020-01-10 | 深圳市华星光电半导体显示技术有限公司 | Connecting circuit of display panel light-emitting device |
| US10916209B2 (en) | 2016-09-09 | 2021-02-09 | Boe Technology Group Co., Ltd. | Compensation device, display device and method for compensating common electrode voltage |
-
2008
- 2008-11-27 CN CN200810227519A patent/CN101750774A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314011A (en) * | 2011-09-06 | 2012-01-11 | 深圳市华星光电技术有限公司 | Liquid crystal display (LCD) driving circuit, data driving chip, liquid crystal panel and liquid crystal display device |
| US10916209B2 (en) | 2016-09-09 | 2021-02-09 | Boe Technology Group Co., Ltd. | Compensation device, display device and method for compensating common electrode voltage |
| CN107450777A (en) * | 2017-08-15 | 2017-12-08 | 京东方科技集团股份有限公司 | A kind of touch base plate and preparation method thereof, contact panel, display device |
| CN109036255A (en) * | 2018-09-30 | 2018-12-18 | 厦门天马微电子有限公司 | A kind of display driving method, display drive apparatus and display equipment |
| CN110675819A (en) * | 2019-09-02 | 2020-01-10 | 深圳市华星光电半导体显示技术有限公司 | Connecting circuit of display panel light-emitting device |
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Application publication date: 20100623 |