CN102789755B - Display panel - Google Patents

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Publication number
CN102789755B
CN102789755B CN201110144248.1A CN201110144248A CN102789755B CN 102789755 B CN102789755 B CN 102789755B CN 201110144248 A CN201110144248 A CN 201110144248A CN 102789755 B CN102789755 B CN 102789755B
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CN
China
Prior art keywords
electrode
signal wire
compensating
viewing area
subarea
Prior art date
Application number
CN201110144248.1A
Other languages
Chinese (zh)
Other versions
CN102789755A (en
Inventor
张沛恩
宋立伟
李亚谕
陈承佐
Original Assignee
群创光电股份有限公司
群康科技(深圳)有限公司
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Priority to CN201110144248.1A priority Critical patent/CN102789755B/en
Publication of CN102789755A publication Critical patent/CN102789755A/en
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Publication of CN102789755B publication Critical patent/CN102789755B/en

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3648Control of matrices with row and column drivers using an active matrix
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/04Structural and physical details of display devices
    • G09G2300/0421Structural details of the set of electrodes
    • G09G2300/0426Layout of electrodes and connections
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/04Structural and physical details of display devices
    • G09G2300/0421Structural details of the set of electrodes
    • G09G2300/043Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0223Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes

Abstract

The present invention discloses a kind of display panel, comprises a viewing area, a non-display area and at least one compensating module.Viewing area has multiple pixel.Non-display area is arranged on outside viewing area, and comprises a near-end subarea.Near-end subarea has multiple signal wire.Signal wire extends toward viewing area.Signal wire in one driving chip transmission display district and near-end subarea, carries out discharge and recharge action to pixel.The impact that compensating module causes in order to the signal wire compensating different length.When non-display area more comprises an opposite ends subarea, compensating module is arranged among at least one in viewing area and opposite ends subarea, and compensating module is arranged among viewing area.

Description

Display panel

Technical field

The invention relates to a kind of display panel, relate to a kind of display panel compensating the impact that different length signal wire causes especially.

Background technology

Generally speaking, flat-panel screens can be divided into non-spontaneous optical display unit and self-emitting display.Liquid crystal display (liquidcrystaldisplay; LCD) one of non-spontaneous optical display unit is belonged to.Self-emitting display comprises, plasma display (plasmadisplaypanel; PDP), Field Emission Display (fieldemissiondisplay; FED), electroluminescence (electroluminescent; EL) display and organic light emitting diode display (organiclightemittingdiodedisplay; OLED).

No matter be non-self-emitting display and self-emitting display, its display panel can be divided into a viewing area and a non-display area usually.As shown in Figure 1, non-display area 110 has at least one driving chip 120.Driving chip 120 can be a driving chip (drivingIC).Driving chip 120 passes through signal wire module 130, to the pixel P in viewing area 140 11~ P mncarry out charging and discharging action.As shown in the figure, signal wire module 130 is in fan-out (fan-out) mode, couples driving chip 120 and pixel P 11~ P mn.

But fan-out structure can cause the signal wire length in signal wire module 130 to differ, and thus causes the charge/discharge rates of pixel to differ.For example, the length of signal wire 131 is greater than the length of signal wire 133.Therefore, when driving chip 120 provide identical signal to signal wire 131 and 133 time, the pixel P of the first row (vertical direction) 11~ P 1ncharge/discharge speed may be slower than the pixel P of the third line (vertical direction) 31~ P 3ncharge/discharge speed, thus cause pixel P 11~ P 1nthe brightness presented is different from pixel P 31~ P 3nthe brightness presented.

Summary of the invention

The invention provides a kind of display panel, comprise a viewing area, a non-display area and at least one compensating module.Viewing area has multiple pixel.Non-display area is arranged on outside viewing area, and comprises a near-end subarea.Near-end subarea has multiple signal wire.Signal wire extends toward viewing area.Signal wire in one driving chip transmission display district and near-end subarea, carries out discharge and recharge action to pixel.Compensating module couples 1 in signal wire first signal wire, in order to compensate the impact that the first signal wire causes discharge and recharge action.When non-display area more comprises an opposite ends subarea, compensating module is arranged among at least one in viewing area and opposite ends subarea, and compensating module is arranged among viewing area.

Accompanying drawing explanation

For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:

Fig. 1 is the schematic diagram of known display panel.

Fig. 2 and Fig. 4 is the possible embodiment of display panel of the present invention.

Fig. 3 A ~ 3D is that one of compensating module of the present invention may structural representation.

Main element symbol description:

100,200,400: display panel;

110: non-display area;

120,211,411: driving chip;

130: signal wire module;

131,133, A ~ D: signal wire;

140,250,450: viewing area;

210,410: near-end subarea;

231 ~ 233,431 ~ 433: opposite ends subarea;

261 ~ 272,461 ~ 463: compensating module;

310 a~ 310 c, 330 a: extension area;

P 11~ P mn, P a1~ P d6: pixel;

C a1~ C c5, C a~ C c: capacitor;

SE, DE a~ DE d, PE, CE a: electrode.

Embodiment

Fig. 2 is that one of display panel of the present invention may embodiment.As shown in the figure, display panel 200 has a viewing area (ActiveArea; AA) 250, one non-display area and at least one compensating module (as 261 ~ 272).The present invention does not limit the kind of display panel 200.In a possibility embodiment, display panel 200 is a liquid crystal display (LCD) panel.

Viewing area 250 in order to present image, and has multiple signal wire and multiple pixel.For convenience of description, Fig. 2 only display signal line A ~ D and pixel P a1~ P d6.Each pixel couples a corresponding signal wire.For example, pixel P a1~ P a6couple signal wire A.Due to pixel P a1~ P d6in circuit structure known very well by this area personage, therefore to repeat no more.

In the present embodiment, signal wire A ~ D is made up of conductive material, as metal.In addition, the present invention does not limit the kind of signal wire.In a possibility embodiment, signal wire A ~ D is scan electrode (scanelectrode), in order to transmit sweep signal (scansignal).In other possibility embodiment, signal wire A ~ D may be data electrode (dataelectrode) or common electrode (commonelectrode), in order to data signal (datasignal) or common electric voltage (commonvoltage).

Region beyond viewing area 250 is all called non-display area.In the present embodiment, non-display area comprises, near-end subarea 210 and opposite ends subarea 231 ~ 233.Near-end subarea 210 has multiple signal wire, and for convenience of description, Fig. 2 only shows four signal line A ~ D.

Signal wire A ~ D extends toward viewing area 250, and the drive singal in order to be provided by a driving chip is sent to the pixel P in viewing area 250 a1~ P d6.In the present embodiment, the region with signal wire line segment drive singal being imported into viewing area by driver is called the near-end subarea (as 210) of this signal wire, and the region without this type of signal wire line segment is called the opposite ends subarea (as 231 ~ 233) of this signal wire.

Driving chip 211 in near-end subarea 210 passes through the signal wire A ~ D in near-end subarea 210 and viewing area 250, to pixel P a1~ P d6carry out a discharge and recharge action.In the present embodiment, be with a chip glass joining technique (ChipOnGlass; COG) driving chip 211 is integrated, in order to provide drive singal to give signal wire A ~ D, in order to pixel P a1~ P a6carry out discharge and recharge action.In another possibility embodiment, a coil type can be utilized automatically to engage (TapeAutomaticBonding; And a chip mantle joining technique (ChipOnFilm TAB); COF) integrate driving chip 211, give signal wire A ~ D in order to provide drive singal.

The present invention does not limit quantity and the kind of driving chip.In a possibility embodiment, when signal wire A ~ D is scan electrode, then driving chip 211 is one scan driver (scandriver), gives pixel P in order to provide multiple sweep signal a1~ P d6, make it start to carry out charge or discharge action.In another possibility embodiment, when signal wire A ~ D is data electrode, then driving chip 211 is a data driver (datadriver), gives pixel P in order to provide multiple data-signal a1~ P d6, make pixel P a1~ P d6interior capacitor stores corresponding electric charge.

If the signal wire line segment (as signal wire A ~ D is arranged in the line segment in region 210) in a non-display area (as region 210) is in order to import viewing area (as 250) into during by the signal of driving chip, then this non-display area is called the near-end subarea of this signal wire.If non-display area (as region 231 ~ 233) does not comprise signal wire line segment drive singal being imported into viewing area, be then referred to as the opposite ends subarea of this signal wire.

For example, suppose that sweep signal only provides when giving viewing area by one scan driver from the right side (as region 231) of viewing area, then with scan electrode, non-display area on the right side of viewing area is the near-end subarea of scan electrode, no matter and whether scan electrode is extended into the non-display area (as region 233) in left side by viewing area, the non-display area in left side is all the opposite ends subarea of scan electrode.Suppose to take sweep signal to be provided by both sides, viewing area the framework giving viewing area, then the non-display area of both sides is all the near-end subarea of scan electrode.

In like manner, suppose that a data driver only imports data-signal into viewing area from the upside (as region 232) of viewing area, and one scan driver only imports sweep signal into viewing area from the right side (as region 231) of viewing area, non-display area then on the upside of display is the near-end subarea of data electrode, and is the opposite ends subarea of scan electrode.Similarly, the non-display area on the right side of display is the near-end subarea of scan electrode, and is the opposite ends subarea of data electrode.

In the present embodiment, signal wire A ~ D arranges in fan-out mode, sends pixel P in order to the signal provided by driving chip 211 a1~ P d6, therefore, the length of signal wire A ~ D is not identical (line segment length being particularly positioned at near-end subarea 210 is not identical).Because the length of signal wire A ~ D will affect pixel P a1~ P d6charging and discharging speed, therefore in order to the charge/discharge rates of the pixel on each signal wire of homogenising, compensating module 261 ~ 272 couples corresponding signal wire (as A ~ D), in order to the different length of compensating signal line A ~ D, on the impact that the discharge and recharge action of pixel causes.

In the present embodiment, signal wire D does not have compensating module, and signal wire A has compensating module 261 ~ 266, signal wire B has compensating module 267 ~ 269, signal wire C has compensating module 270 ~ 272.Because the length of signal wire A ~ D is different, therefore for different signal wires, different degree of compensation need be provided.For example, signal wire A is shorter in length than signal wire B, therefore total degree of compensation of compensating module 261 ~ 266 is greater than total degree of compensation of compensating module 267 ~ 269.

The present invention does not limit the quantity of the compensating module on each signal wire.In a possibility embodiment, the quantity of compensating module depends on the corresponding length of signal wire and the compensation ability of compensating module.For example, when the compensation ability homogeneous phase of each compensating module while, then shorter signal wire needs compensating module the more, or in shorter signal wire, the compensating module that compensation ability is larger is set, and in longer signal wire, the compensating module that compensation ability is less is set.

The present invention does not limit the set-up mode of compensating module.In a possibility embodiment, each pixel on same signal wire all configures a compensating module.For example, the pixel P-on signal wire A a1~ P a6all configure a compensating module (as 261 ~ 266).In another possibility embodiment, every N number of pixel, may just configure a compensating module, as shown in signal wire B and C.Be example at signal wire B, just configure a compensating module every 1 pixel.In other embodiments, be every a fixed range, a compensating module is just set.

In the present embodiment, although the quantity of the compensating module of signal wire B and C identical (all having 3 compensating modules), its compensation ability is not identical.For example, due to the length being shorter in length than signal wire C of signal wire B, therefore the compensation ability of compensating module 267 ~ 269 is greater than the compensation ability of compensating module 270 ~ 272, can the impact (charge/discharge rates) that causes of the different length of homogenising signal wire B and C.

In addition, the compensation ability of the compensating module on same signal wire may all not identical, all identical or part is identical.In a possibility embodiment, the compensation ability of the compensating module on same signal wire may reduce gradually or increase gradually.In another possibility embodiment, more the compensation ability of the compensating module of approach signal line central authorities is higher.

In the present embodiment, the quantity of the compensating module of signal wire B and C is identical, but is different from the quantity of the compensating module being couple to signal wire A.In other embodiments, the quantity of the compensating module of unlike signal line may all identical, an equal difference or part is identical, and other parts are different.As long as suitably adjust the quantity of compensating module and the compensation ability of compensating module, the impact that the signal wire A ~ D that just can compensate different length causes.

The present invention does not limit the structure of compensating module 261 ~ 272.In the present embodiment, compensating module 261 ~ 272 is respectively capacitor C a1~ C c6.In a possibility embodiment, capacitor C a1~ C c6metal dielectric layer metal (Metal-Insulator-Metal, MIM) structure or serial connection metal dielectric layer metal construction (cascadeMIM) may be.In other possibility embodiment, capacitor C a1~ C c6partial capacitor be mim structure, and other capacitor for serial connection mim structure.

As long as suitably control the size of the metal construction of each capacitor, the capacitance of each capacitor just suitably can be controlled.In the present embodiment, the metal construction of each capacitor all receives a voltage potential.The size of the present invention's not stop voltage current potential, only otherwise affect the current potential of image quality, all can supply capacitor.

Fig. 3 A is that one of compensating module of the present invention may structural representation.For convenience of description, Fig. 3 A only shows the schematic layout pattern of compensating module and part viewing area.In the present embodiment, signal wire A ~ D is respectively data electrode DE a~ DE d.Pixel P a1~ P d1except coupling data electrode DE respectively a~ DE doutward, scan electrode SE is more coupled.Due to pixel P a1~ P d1structure known very well by this area personage, therefore to repeat no more.

As shown in Figure 3A, scan electrode SE extends towards direction D1, and data electrode DE extends towards direction D2, wherein direction D1 vertical direction D2.Scan electrode SE extends towards direction D1 except past, and scan electrode SE has more an extension area 310 a~ 310 c.

In order to offset data electrode DE a~ DE dthe impact that causes of different length, therefore extension area 310 a~ 310 cextend toward direction D2, and overlapping data electrode DE a~ DE d.Extension area 310 a~ 310 cwith data electrode DE a~ DE coverlapping region just definable goes out capacitor C a1, C b1and C c1.

By control extension area 310 a~ 310 cwith data electrode DE a~ DE cthe size of overlapping region, just can control capacitor C a1, C b1and C c1capacitance, and then adjustment degree of compensation.For example, extension area 310 awith data electrode DE aoverlapping region maximum, and extension area 310 cwith data electrode DE coverlapping region minimum, therefore capacitor C a1capacitance be greater than capacitor C c1capacitance.Therefore, capacitor C a1compensation ability be greater than capacitor C c1compensation ability.

In addition, the present invention does not limit extension area 310 a~ 310 cshape, not injure the aperture opening ratio (ApertureRatio) of viewing area for principle of design.In the present embodiment, extension area 310 a~ 310 cshape all identical, be strip.In other embodiments, extension area 310 a~ 310 cthere is different shapes, and can be arbitrary shape.

Moreover the present invention does not limit and forms capacitor C a1, C b1and C c1type of electrodes.In order to offset data electrode DE a~ DE c, in the present embodiment, capacitor C a1, C b1and C c1by data electrode DE a~ DE cformed with scan electrode SE.In other possibility embodiment, capacitor C a1, C b1and C c1can by data electrode DE a~ DE cforming with a compensating electrode, wherein this compensating electrode can be the electrode that a common electrode or additionally adds.

In a possibility embodiment, the compensation condenser on same signal wire can be made up of Different electrodes layer, such as, in 3A figure capacitor C a1in be by data electrode DE aand scan electrode extension area 310 aformed, but with same for offset data electrode DE aanother capacitor (as C a2) then may be positioned at by common electrode (not shown) and data electrode DE aformed; And offset data electrode DE aanother capacitor (as C a3) electrode that also additionally may add by one and data electrode DE aformed.

In a possibility embodiment, this electrode additionally added and scan electrode SE formed by with processing procedure, and this electrode additionally added has identical material with scan electrode SE.In another possibility embodiment, this electrode additionally added and pixel electrode P a1~ P d1formed by with gold-tinted processing procedure, and with pixel electrode P a1~ P dthere is identical material.

The present invention does not limit the voltage potential of the electrode that this additionally adds.This electrode additionally added may be electrically connected scan electrode SE, or receives common electric voltage (Vcom), ground voltage (GND) and other possibility voltage.As long as suitably design capacitance device C a1, C b1and C c1size, just can reach the effect of compensation.

In other embodiments, if the impact that the different length for compensating the scan electrode in viewing area causes, then capacitor can be made up of scan electrode and a compensating electrode.The present invention does not limit the kind of this compensating electrode.In a possibility embodiment, other electrode already present (as data electrode or common electrode) in viewing area can be utilized, or the conductive layer additionally added forms this compensation condenser.

Similarly, if for compensating the impact that the different length of common electrode causes, then compensation condenser can by a common electrode and a compensating electrode (as scan electrode, data electrode or the electrode that additionally increases newly) form.

Although capacitor C a1, C b1and C c1be arranged among viewing area 250, but by the size of adjustment overlapping region, just can the degree of control and compensation.Moreover the design of this capacitor can avoid open region (being such as arranged at below the black matrix layer of panel), therefore, can't impact the aperture opening ratio of display panel.Capacitor C is formed by electrode (as data electrode, source electrode and common electrode) originally a1, C b1and C c1, therefore the utilization rate of electrode can be improved, and can not cost of manufacture be increased.

Fig. 3 B is another possibility structural representation of compensating module of the present invention.For convenience of description, Fig. 3 B only shows capacitor C a1structure.In figure 3 a, capacitor C a1by the extension area 310 of scan electrode SE awith data electrode DE aformed.But, in 3B figure, capacitor C a1by data electrode DE aan extension area 330 aformed with scan electrode SE.In other embodiments, also data electrode DE can be utilized aextension area 330 acorresponding compensation system (as electric capacity) is formed with other compensating electrode (as common electrode or the electrode that additionally adds).

Fig. 3 C is another possibility structural representation of compensating module of the present invention.In the present embodiment, scan electrode SE and data electrode DE aall there is an extension area, in order to define capacitor.As shown in Figure 3 C, scan electrode SE has an extension area 310 a, and data electrode DE athere is an extension area 330 a.Capacitor C a1be formed in extension area 310 awith extension area 330 aoverlapping place.

In the present embodiment, extension area 310 awith extension area 330 ashape and area identical, but and be not used to limit the present invention.In other embodiments, extension area 310 ashape may be different from extension area 330 ashape, or extension area 310 aarea may be different from extension area 330 aarea.

Fig. 3 D is another possibility structural representation of compensating module of the present invention.In the present embodiment, capacitor C a1for serial connection mim structure.As shown in the figure, capacitor C a1by the extension area 310 of scan electrode SE a, data electrode DE aand compensating electrode CE aformed.

In the present embodiment, capacitor C a1be positioned among viewing area.In another possibility embodiment, capacitor C a1may be positioned among non-display area, as in near-end subarea or in opposite ends subarea.In other embodiments, capacitor C a1part be arranged in viewing area, and other parts are arranged in non-display area.

For example, extension area 310 awith data electrode DE a(or data electrode DE awith compensating electrode CE a) overlapping region be arranged in viewing area, and data electrode DE awith compensating electrode CE a(or extension area 310 awith data electrode DE a) overlapping region be arranged in non-display area.In other embodiments, extension area 310 awith data electrode DE a(or data electrode DE awith compensating electrode CE a) the region that partly overlaps be arranged in viewing area, and extension area 310 awith data electrode DE a(or data electrode DE awith compensating electrode CE a) other overlapping region be arranged in non-display area.

In addition, the present invention does not limit extension area 310 awith data electrode DE aand data electrode DE awith compensating electrode CE aoverlapping region.In a possibility embodiment, extension area 310 awith data electrode DE athe area of overlapping region can equal, be less than or greater than data electrode DE awith compensating electrode CE athe area of overlapping region.

In order to control and compensation electrode CE avoltage potential, in the present embodiment, compensating electrode CE athere is a connecting hole (contacthole), in order to be electrically connected scan electrode SE.By serial connection MIM (metalinsulatormetal) structure, just in a limited space, capacitor C can be improved a1capacitance, and then increase compensation ability.

In a possibility embodiment, compensating electrode CE abelong to transparent conductive oxide (TransparentConductingOxide with the material of pixel electrode PE; TCO).Therefore, compensating electrode CE acan be formed by identical optical cover process with pixel electrode PE, do not needed the step additionally increasing processing procedure.

In fig. 3d, capacitor C a1by the extension area 310 of scan electrode SE a, data electrode DE aand compensating electrode CE aformed, but and be not used to limit the present invention.In other possibility embodiment, capacitor C a1be be made up of one first conductive layer, one second conductive layer and one the 3rd conductive layer, this three conductive layer separates with insulation course to each other, and wherein this second conductive layer is capacitor C a1for the electrode compensated, and this first, the 3rd conductive layer in fact all has the function of compensating electrode, and lays respectively at the first side and second side of this second conductive layer.Such as in fig. 3d, data electrode DE aand compensating electrode CE alay respectively at first side of scan electrode SE and the second side (upper and lower side) and all for compensated scanning electrode SE, wherein compensating electrode CE a, data electrode DE a, scan electrode SE respectively separates with insulation course, and data electrode DE aand compensating electrode CE abetween be electrical connected through a connecting hole, to improve scan electrode because of uneven and cause the problem of duration of charging inequality at near-end sub-area length.

For example, if capacitor C a1for the impact that the different length of offset data electrode causes, then the second conductive layer is data electrode.Similarly, capacitor C a1for the impact that the different length of compensated scanning electrode or common electrode causes, then the second conductive layer is scan electrode or common electrode.

May in embodiment one, first and the 3rd conductive layer may all additionally add, or in viewing area, do not need the electrode that compensates.For example, if for offset data electrode, then first or the 3rd conductive layer can be in viewing area the electrode (as scan electrode or common electrode) not needing to compensate, or the electrode additionally added.

If the existing electrode in use viewing area is as compensating electrode, then can increase the purposes of electrode.In addition, if form additional electrode by existing processing procedure, the step that compensation effect also can not increase processing procedure can be reached.For example, while formation scan electrode, data electrode, common electrode, pixel electrode, an additional electrode can be formed in the lump, in order to compensate one or more corresponding electrode.

May in embodiment one, first and the 3rd conductive layer one of them may be formed by with gold-tinted processing procedure with pixel electrode.Moreover, first and the 3rd one of them material of conductive layer may be identical with pixel electrode.In other embodiments, first and the 3rd conductive layer may be electrically connected to a same electrical potential source, as common electric voltage (Vcom) or ground voltage (GND), or the first to the 3rd conductive layer is not electrically connected each other, and it receives a corresponding voltage separately.

Similarly, the capacitor that the first to the 3rd conductive layer is formed can be arranged in viewing area or non-display area, as being arranged in near-end subarea or opposite ends subarea.In addition, the partial electrode of at least one of the first to the 3rd conductive layer is positioned among opposite ends subarea.For example, the overlapping region of first and second conductive layer may be positioned among viewing area, and the overlapping region of second and third conductive layer is positioned among non-display area.

Fig. 4 is another possibility embodiment of display panel of the present invention.Fig. 4 similar diagram 2, difference is, the compensating module 261 ~ 272 of Fig. 2 is arranged among viewing area 250, and the compensating module 461 ~ 463 of Fig. 4 be arranged on non-display area opposite ends subarea 432 among, and connect the tail end of corresponding signal wire A ~ C.

In the present embodiment, compensating module 461 ~ 463 is respectively capacitor C a~ C c, its one end couples signal wire A ~ C respectively, and the other end receives a voltage potential V cM.In a possibility embodiment, voltage potential V cMidentical with the current potential of the scan electrode in viewing area 450, but and be not used to limit the present invention.In other embodiments, voltage potential V cMbe different from the current potential of scan electrode.

In addition, while making the pixel electrode (PE as 3D figure) in viewing area 450, a compensating electrode can be formed (as the CE of 3D figure a).Therefore, the formation of compensating electrode can't increase the step of manufacture.In the present embodiment, the overlapping region of compensating electrode and signal wire A ~ C has capacitor 461 ~ 463.By the voltage potential of control and compensation electrode and signal wire A ~ C, just capacitor C can be made a~ C cthe balanced effect of tool.

When the insufficient space of viewing area 250, also compensating module 461 ~ 463 can be arranged at least one in opposite ends subarea 431 ~ 433.Moreover because opposite ends subarea 431 ~ 433 does not arrange driving chip, therefore spendable space is comparatively large, can design the capacitor that capacitance is larger.

The present invention does not limit the setting position of compensating module.In a possibility embodiment, not only opposite ends subarea 432 has compensating module 461 ~ 463, connects viewing area 450 and also has compensating module.In addition, if the two ends of a signal wire all extend into non-display area, and be connected with driving chip (namely the non-display area of signal wire both sides is all near-end subarea) time, then the compensating module coupling this signal wire is just only arranged among viewing area 450.In other possibility embodiment, except viewing area 450 and opposite ends subarea 431 ~ 433, compensating module also can be arranged among near-end subarea 410.

The suitable elasticity of setting position due to compensating module, therefore higher compensation efficiency can be reached, the impact (charging of pixel and discharge time) that the signal wire of homogenising different length causes.In addition, in other embodiments, when the problem that the signal wire that compensating module is enough to homogenising different length causes, then signal wire can adopt schistose texture, and do not need to adopt snakelike (z shape) structure, therefore the substrate area can reduced shared by signal wire, and the frame in the near-end subarea 210 and 410 that can narrow.

Unless otherwise defined, the general understanding of persons of ordinary skill in the technical field of the present invention is all belonged to (comprising technology and scientific terms) at this all vocabulary.In addition, unless clear expression, it is consistent that the definition of vocabulary in general dictionary should be interpreted as meaning in the article with its correlative technology field, and should not be construed as perfect condition or too formal voice.

Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little amendment and perfect, therefore protection scope of the present invention is when being as the criterion of defining with claims.

Claims (17)

1. a display panel, comprising:
One viewing area, has multiple pixel;
One non-display area, is arranged on outside this viewing area, and comprises a near-end subarea, this near-end subarea has multiple signal wire, described signal wire extends toward this viewing area, and a driving chip, through the described signal wire in this near-end subarea and this viewing area, carries out a discharge and recharge action to described pixel; And
At least one compensating module, couples one first signal wire in described signal wire, in order to compensate the impact that this first signal wire causes this discharge and recharge action;
When wherein this non-display area more comprises an opposite ends subarea, this compensating module is arranged among at least one in this viewing area and this opposite ends subarea, this compensating module comprises one first side that one first conductive layer is arranged at this first signal wire, and one second conductive layer be arranged at one second side of this first signal wire, this first conductive layer and this second conductive layer are all arranged in this viewing area;
The region wherein with signal wire line segment drive singal being imported into this viewing area by this driving chip is called this near-end subarea, and the region without signal wire line segment drive singal being imported into this viewing area by this driving chip is called this opposite ends subarea;
Wherein this compensating module also comprises one first capacitor, and this first capacitor is made up of one first compensating electrode and this first signal wire, and this first capacitor is positioned at this opposite ends subarea.
2. display panel as claimed in claim 1, it is characterized in that, this first signal wire is a data electrode, and this compensating electrode is one scan electrode.
3. display panel as claimed in claim 1, it is characterized in that, this first signal wire is a data electrode, and this compensating electrode is a common electrode.
4. display panel as claimed in claim 1, it is characterized in that, this first signal wire is one scan electrode, and this compensating electrode is a data electrode.
5. display panel as claimed in claim 1, it is characterized in that, this viewing area more comprises multiple pixel electrode, and the material of described pixel electrode and this compensating electrode is a transparent conductive oxide, and described pixel electrode and this compensating electrode insulated from each other.
6. display panel as claimed in claim 1, it is characterized in that, this first conductive layer and this second conductive layer are electrical connected.
7. display panel as claimed in claim 1, it is characterized in that, this viewing area more comprises multiple pixel electrode, and described pixel electrode and this first conductive layer formed by same gold-tinted processing procedure.
8. display panel as claimed in claim 1, it is characterized in that, this compensating module more comprises one second capacitor, and this second capacitor is made up of this first signal wire and one second compensating electrode.
9. display panel as claimed in claim 8, it is characterized in that, the capacitance of this first capacitor is different from the capacitance of this second capacitor.
10. display panel as claimed in claim 8, it is characterized in that, this first compensating electrode and the second compensating electrode are electrical connected.
11. display panels as claimed in claim 10, it is characterized in that, this second capacitor is positioned at this viewing area.
12. display panels as claimed in claim 8, it is characterized in that, the part of at least one of this first compensating electrode and the second compensating electrode is arranged in opposite ends subarea.
13. display panels as claimed in claim 8, it is characterized in that, this viewing area more comprises multiple pixel electrode, and this first compensating electrode and described pixel electrode formed by same gold-tinted processing procedure.
14. display panels as claimed in claim 13, it is characterized in that, the material of this first compensating electrode and described pixel electrode is identical.
15. display panels as claimed in claim 13, it is characterized in that, this first signal wire is a data electrode, and this second compensating electrode is one scan electrode, and this first compensating electrode material is identical with the material of described pixel electrode.
16. display panels as claimed in claim 15, it is characterized in that, this first compensating electrode is positioned at this non-display area.
17. display panels as claimed in claim 16, it is characterized in that, this first compensating electrode is positioned at this opposite ends subarea.
CN201110144248.1A 2011-05-20 2011-05-20 Display panel CN102789755B (en)

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CN106711180B (en) 2016-12-29 2019-09-27 上海天马有机发光显示技术有限公司 Display panel, display device and display panel production method

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