CN100534242C - Organic electroluminescent display unit - Google Patents
Organic electroluminescent display unit Download PDFInfo
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- CN100534242C CN100534242C CNB200510093004XA CN200510093004A CN100534242C CN 100534242 C CN100534242 C CN 100534242C CN B200510093004X A CNB200510093004X A CN B200510093004XA CN 200510093004 A CN200510093004 A CN 200510093004A CN 100534242 C CN100534242 C CN 100534242C
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Abstract
The invention relates to an organic electroluminescent display, which comprises base plate, data line and scanning line, several first, second and third organic electroluminescent elements, at least one first, second and third source drivers and one grid driver. Wherein, the data line and the scanning line on the base board define several pixel areas; each organic electroluminescent element is inside the pixel area, while it is connected to one data line and one scanning line; the source driver is at one side of base plate; the data line connected to one organic electroluminescent element will also connect to relative source driver; the grid driver is at another side of base plate, to connect the scanning line. The invention can improve lighting efficiency and picture quality.
Description
Technical field
The present invention relates to a kind of organic light emitting display (Organic Electro-LuminescenceDisplay), and be particularly related to a kind of organic light emitting display that can effectively drive each organic electroluminescence cell.
Background technology
Display of organic electroluminescence is a kind of display element that utilizes the self luminous characteristic of luminous organic material to reach display effect.Its ray structure is made of pair of electrodes (anode, negative electrode) and organic luminous layer.Its principle of luminosity for when electric current by between anode and negative electrode, make electronics and electric hole in organic luminous layer in conjunction with and when producing exciton, just can make organic luminous layer produce the mechanism of giving out light of different colours according to properties of materials.
Fig. 1 is in the active system organic electroluminescent display, the basic circuit configuration diagram of a pixel cell.Please refer to Fig. 1, gate drivers 110 (Gate driver) provides voltage to scan wiring 130 (Scan line), to open active member 150.And source electrode driver (Source driver) 120 can be sent data voltage into data wiring 140 (Data line), makes this data voltage be stored in the storage capacitor 160, and another active member 170 is opened.Therefore, just can deliver in the organic electroluminescence cell 180 from the electric current of Vd and then drive that it is luminous.Because the type of drive of above-mentioned active system organic electroluminescent display is similar to general active LCD, so in the making of present driving element at display of organic electroluminescence, all be the type of drive of directly having utilized LCD.
Fig. 2 is the schematic diagram of known display of organic electroluminescence.Please refer to Fig. 2, display of organic electroluminescence 200 comprise substrate 210, many data wirings 222 and scan wiring 224, a plurality of ruddiness (R), green glow (G) and blue light (B) organic electroluminescence cell 242,244,246, first source electrode driver 252, second source electrode driver 254, the 3rd source electrode driver 256 with gate drivers 260.
Wherein, data wiring 222 is arranged on the substrate 210 with scan wiring 224, and data wiring 222 defines a plurality of pixel regions 230 with scan wiring 224 on substrate 210.Each ruddiness, green glow and blue-ray organic electroluminescent unit 242,244,246 are arranged in each pixel region 230.It should be noted that first, second and the 3rd source electrode driver 252,254,256 are arranged on the same side edge 210a of substrate 210.And each source electrode driver 252,254,256 is connected with data wiring 222 in each section 272,274,276, and then drives each ruddiness, green glow and blue-ray organic electroluminescent unit 242,244,246 in each section 272,274,276 with identical data voltage.
Yet the characteristic of the organic luminous layer in ruddiness, green glow and the blue-ray organic electroluminescent unit 242,244,246 is all inequality.Therefore, drive each ruddiness, green glow and blue-ray organic electroluminescent unit 242,244,246 with identical data voltage, often can't make each organic electroluminescence cell 242,244,246 can both bring into play best luminous efficiency, so the quality of display just is restricted.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of display of organic electroluminescence, and it can be with each organic electroluminescence cell of different driven, and then improves luminous efficiency and image quality.
The present invention proposes a kind of display of organic electroluminescence, comprises substrate, many data wirings and scan wiring, a plurality of first, second and the 3rd organic electroluminescence cell, at least one first source electrode driver, second source electrode driver and the 3rd source electrode driver and a gate drivers.Data wiring and scan wiring are arranged on the substrate, and wherein data wiring and scan wiring define a plurality of pixel regions on substrate.Each first, second, third organic electroluminescence cell is arranged in each pixel region, and each first, second be electrically connected with scan wiring wherein with corresponding wherein data wiring respectively with the 3rd organic electroluminescence cell.First source electrode driver is arranged at a long side place of substrate, and wherein the data wiring that is electrically connected with first organic electroluminescence cell can be electrically connected with first source electrode driver.Second source electrode driver is arranged at a long side place of substrate, and wherein the data wiring that is electrically connected with second organic electroluminescence cell can be electrically connected with second source electrode driver.The 3rd source electrode driver is arranged at a long side place of substrate, and wherein the data wiring that is electrically connected with the 3rd organic electroluminescence cell can be electrically connected with the 3rd source electrode driver.Gate drivers is arranged at the weak point side edge of substrate, and gate drivers can be electrically connected with scan wiring.
In one embodiment of this invention, first and second above-mentioned source electrode driver is arranged on the same long side place of substrate, and the 3rd source electrode driver is arranged on another long side place of substrate.
In one embodiment of this invention, above-mentioned display of organic electroluminescence for example also comprises many first lead-in wires and many second lead-in wires.First lead-in wire is arranged between the data wiring and first source electrode driver that is electrically connected with first organic electroluminescence cell.Second lead-in wire is arranged between the data wiring and second source electrode driver that is electrically connected with second organic electroluminescence cell, and wherein, first lead-in wire is positioned at different retes with second lead-in wire.
In one embodiment of this invention, above-mentioned display of organic electroluminescence for example also comprises many articles the 3rd lead-in wires.The 3rd lead-in wire is arranged between the data wiring and the 3rd source electrode driver that is electrically connected with the 3rd organic electroluminescence cell, and the 3rd lead-in wire goes between with above-mentioned first or second go between and be positioned at identical rete.
In one embodiment of this invention, above-mentioned first, second and the 3rd organic electroluminescence cell are respectively ruddiness, green glow and blue-ray organic electroluminescent unit.
In one embodiment of this invention, first, second and the 3rd organic electroluminescence cell of above-mentioned each for example comprises active member and Organic Light Emitting Diode.And Organic Light Emitting Diode is electrically connected with active member.
In one embodiment of this invention, above-mentioned active member comprises at least one thin-film transistor.
In one embodiment of this invention, first, second and the 3rd organic electroluminescence cell of above-mentioned each is respectively a top emission type organic electro luminescent unit.
In one embodiment of this invention, first, second and the 3rd organic electroluminescence cell of above-mentioned each is respectively a bottom-emission type organic electroluminescence cell.
Display of organic electroluminescence of the present invention is because of adopting special circuit layout framework, so the organic electroluminescence cell of different colours separately can be driven.Therefore, each source electrode driver can provide best voltage at the organic electroluminescence display unit of correspondence and drive it.Thus, can improve the luminous efficiency of organic electroluminescence cell effectively, and improve image quality.
State with other purpose, feature and advantage and can become apparent on the present invention for allowing, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is in the active system organic electroluminescent display, the basic circuit configuration diagram of a pixel cell.
Fig. 2 is the schematic diagram of known display of organic electroluminescence.
Fig. 3 is the schematic diagram of a kind of display of organic electroluminescence in the preferred embodiment of the present invention.
Fig. 3 A is along the partial cutaway schematic of A-A ' line among Fig. 3.
Fig. 3 B is along the partial cutaway schematic of C-C ' line among Fig. 3.
The main element description of symbols
110: gate drivers
120: source electrode driver
130: scan wiring
140: data wiring
150,170,342a, 342d: active member
160,342c: storage capacitor
180: organic electroluminescence cell
200,300: display of organic electroluminescence
210,310: substrate
210a, 310a, 310b, 310c: side edge
222,322: data wiring
224,324: scan wiring
230,330: pixel region
242,342: the first organic electroluminescence cells
244,344: the second organic electroluminescence cells
246,346: the three organic electroluminescence cells
252,352: the first source electrode drivers
254,354: the second source electrode drivers
256,356: the three source electrode drivers
260,360: gate drivers
272,274,276: section
342b: Organic Light Emitting Diode
372: the first lead-in wires
374: the second lead-in wires
376: the three lead-in wires
380: insulating barrier
390: connector
Embodiment
Fig. 3 is the schematic diagram of a kind of display of organic electroluminescence in the preferred embodiment of the present invention.Please refer to Fig. 3, this display of organic electroluminescence 300 comprises substrate 310, many data wirings 322 and scan wiring 324, a plurality of first, second and the 3rd organic electroluminescence cell 342,344,346, at least one first source electrode driver 352, at least one second source electrode driver 354, at least one the 3rd source electrode driver 356 (only representing respectively among Fig. 3) and gate drivers 360.
Please refer to Fig. 3, data wiring 322 is arranged on the substrate 310 with scan wiring 324, and wherein data wiring 322 defines a plurality of pixel regions 330 with scan wiring 324 on substrate 310.And each first, second be arranged in each pixel region 330 with the 3rd organic electroluminescence cell 342,344,346, and respectively first, second is electrically connected with scan wiring 324 wherein with corresponding wherein data wiring 322 respectively with the 3rd organic electroluminescence cell 342,344,346.In one embodiment of this invention, first, second and the 3rd organic electroluminescence cell 342,344,346 for example are respectively the organic electroluminescence cells of ruddiness (R), green glow (G) and blue light (B).Certainly, the present invention does not limit the color of first, second and the 3rd organic electroluminescence cell 342,344,346, and first, second and the 3rd organic electroluminescence cell 342,344,346 also can be carmetta (Magenta), cyan (Cyan) and yellow three primary colors such as (Yellow).
In addition, in a preferred embodiment of the present invention, above-mentioned each first, second and the 3rd organic electroluminescence cell 342,344,346 for example comprise an active member and an Organic Light Emitting Diode respectively.The circuit diagram of only having represented first organic electroluminescence cell 342 among Fig. 3, it comprises active member 342a and Organic Light Emitting Diode 342b.As shown in Figure 3, Organic Light Emitting Diode 342b is electrically connected with active member 342a.Wherein, active member 342a for example comprise thin-film transistor (Thin Film Transistor, TFT).
Please continue with reference to Fig. 3, first source electrode driver 352 is arranged at a long side place of substrate 310, and the data wiring 322 that wherein is electrically connected with first organic electroluminescence cell 342 can be electrically connected with first source electrode driver 352.Second source electrode driver 354 is arranged at a long side place of substrate 310, and the data wiring 322 that wherein is electrically connected with second organic electroluminescence cell 344 can be electrically connected with second source electrode driver 354.The 3rd source electrode driver 356 is arranged at a long side place of substrate 310, and the data wiring 322 that wherein is electrically connected with the 3rd organic electroluminescence cell 346 can be electrically connected with the 3rd source electrode driver 356.
In more detail, first, second is electrically connected with first, second and the 3rd organic electroluminescence cell 342,344,346 separately with the 3rd source electrode driver 352,354,356.Therefore, at different organic luminous layers (for example R that represents among Fig. 3, G, B), first, second and the 3rd source electrode driver 352,354,356 can be used its character used in proper names and in rendering some foreign names agate characteristic curve (γ curve) separately respectively, and apply different voltage on first, second and the 3rd organic electroluminescence cell 342,344,346.Thus, can provide best driving voltage at various organic electroluminescence cells.Therefore, luminous efficiency and image quality also can obtain to improve and improve.It should be noted that increase, more than one first, second and the 3rd source electrode driver 352,354,356 can be set, to drive a plurality of organic electroluminescence cells of its correspondence for the reply panel resolution rate.
From the above, can there be several set-up modes the position about each source electrode driver 352,354,356.In one embodiment of this invention, first and second source electrode driver 352,354 is arranged on the same long side 310a of place of substrate 310, and the 3rd source electrode driver 356 is arranged on the 310b of another long side place of substrate 310.Certainly, in another embodiment, the first and the 3rd source electrode driver 352,356 can be arranged on the same long side place of substrate 310, and second source electrode driver 354 is arranged on another long side place (not shown) of substrate 310.In another embodiment, the second and the 3rd source electrode driver 354,356 can be arranged on the same long side place of substrate 310, and first source electrode driver 352 is arranged on another long side place (not shown) of substrate 310.
Please continue with reference to Fig. 3, in one embodiment of this invention, display of organic electroluminescence 300 for example also comprises many first lead-in wires 372 and many second lead-in wires 374.First lead-in wire 372 is arranged between the data wiring 322 and first source electrode driver 352 that is electrically connected with first organic electroluminescence cell 342.Second lead-in wire 374 is arranged between the data wiring 322 and second source electrode driver 354 that is electrically connected with second organic electroluminescence cell 344, and wherein, first lead-in wire 372 is positioned at different retes with second lead-in wire 374.
In more detail, for two source electrode drivers 352,354 of avoiding being positioned at the same long side 310a of place had been electrically connected its corresponding organic electroluminescence cell at 344,346 o'clock, lead-in wire 372,374 each other contacts with each other and produces short circuit, so its lead-in wire 372,374 separately must be arranged at different retes.
For further specifying, please refer to Fig. 3 A.Fig. 3 A is along the partial cutaway schematic of A-A ' line among Fig. 3.As represented among Fig. 3 A, second lead-in wire 374 is positioned on the substrate 210, and has an insulating barrier 380 between first lead-in wire, 372 and second lead-in wire 374, to avoid producing short circuit between the two.Wherein, second lead-in wire 374 of lower floor is by connector 390, and is electrically connected with the data wiring 322 that is positioned at the upper strata.
Moreover display of organic electroluminescence 300 for example also comprises many articles the 3rd lead-in wires 376.The 3rd lead-in wire 376 is arranged between the data wiring 322 and the 3rd source electrode driver 356 that is electrically connected with the 3rd organic electroluminescence cell 346, and the 3rd lead-in wire 376 and above-mentioned first goes between and 372 or second goes between and 374 be positioned at identical rete.Fig. 3 B is along the partial cutaway schematic of C-C ' line among Fig. 3.Please refer to Fig. 3 B, wherein expression is the 3rd lead-in wire 376 and first lead-in wire 372 situations at same rete.
Please continue with reference to Fig. 3, gate drivers 360 is arranged at the short side edge 310c of substrate 310, and gate drivers 360 can be electrically connected with scan wiring 324.Shown in the circuit diagram among Fig. 3, when gate drivers 360 provides voltage, this voltage can be opened active member 342a by scan wiring 324.And source electrode driver 352 can be sent data voltage into data wiring 322, makes this data voltage be stored among the storage capacitor 342c, and another active member 342d is opened.Therefore, just can deliver among the Organic Light Emitting Diode 342b from the electric current of Vd and then drive that it is luminous.
As represented each among Fig. 3 first, second and the 3rd organic electroluminescence cell 342,344,346 can be top emission type (Top Emission) organic electroluminescence cell, in one embodiment, this moment, first, second and the 3rd organic electroluminescence cell the 342,344, the 346th of each on the substrate 310 arranged from the left side of substrate 310 to the right according to the order of ruddiness, green glow, blue light.In another embodiment, each first, second with the 3rd organic electroluminescence cell 342,344,346 also can be bottom-emission type (bottom Emission) organic electroluminescence cell, respectively first, second and the 3rd organic electroluminescence cell the 342,344, the 346th on this moment substrate 310 are arranged from the left side of substrate 310 to the right according to the order of blue light, green glow, ruddiness.Certainly, each also can be arranged in other different form with the 3rd organic electroluminescence cell 342,344,346, to reach required luminous mass or demand.
In sum, display of organic electroluminescence of the present invention has following advantage:
Display of organic electroluminescence of the present invention is because of organic electroluminescence cell is separately driven, so each source electrode driver can provide a preferable voltage to drive its corresponding organic electroluminescence display unit.Thus, can be at the characteristic of each organic electroluminescence display unit, and adjust its luminous efficiency effectively, so can improve image quality.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any person of ordinary skill in the field; without departing from the spirit and scope of the present invention; when can doing a little change and improvement, so the present invention's protection range is as the criterion when looking the claim person of defining.
Claims (9)
1. display of organic electroluminescence is characterized in that comprising:
Substrate;
Many data wirings and plurality of scanning wirings are arranged on this substrate, and wherein these data wirings and these scan wirings define a plurality of pixel regions on this substrate;
A plurality of first, second and the 3rd organic electroluminescence cells, each first, second, third organic electroluminescence cell is arranged in each pixel region, and each first, second be electrically connected with scan wiring wherein with corresponding wherein data wiring respectively with the 3rd organic electroluminescence cell;
At least one first source electrode driver is arranged at a long side place of this substrate, and wherein above-mentioned these data wirings that are electrically connected with above-mentioned these first organic electroluminescence cells can be electrically connected with this first source electrode driver;
At least one second source electrode driver is arranged at a long side place of this substrate, and wherein above-mentioned these data wirings that are electrically connected with above-mentioned these second organic electroluminescence cells can be electrically connected with this second source electrode driver;
At least one the 3rd source electrode driver is arranged at a long side place of this substrate, and wherein above-mentioned these data wirings that are electrically connected with above-mentioned these the 3rd organic electroluminescence cells can be electrically connected with the 3rd source electrode driver; And
Gate drivers be arranged at the short side edge of this substrate, and this gate drivers can be electrically connected with above-mentioned these scan wirings.
2. display of organic electroluminescence according to claim 1 it is characterized in that this first and second source electrode driver is arranged on the same long side place of this substrate, and the 3rd source electrode driver is arranged on another long side place of this substrate.
3. display of organic electroluminescence according to claim 2 is characterized in that also comprising:
Many first lead-in wires are between it is arranged on above-mentioned these first organic electroluminescence cells are electrically connected above-mentioned these data wirings and this first source electrode driver; And
Many second lead-in wires, between it is arranged on above-mentioned these second organic electroluminescence cells are electrically connected above-mentioned these data wirings and this second source electrode driver,
Wherein, above-mentioned these first lead-in wires are positioned at rete inequality with above-mentioned these second lead-in wires.
4. display of organic electroluminescence according to claim 3 is characterized in that also comprising:
Many articles the 3rd lead-in wires, between it is arranged on above-mentioned these the 3rd organic electroluminescence cells are electrically connected above-mentioned these data wirings and the 3rd source electrode driver, and above-mentioned these the 3rd lead-in wires are positioned at identical rete with above-mentioned these first lead-in wires or above-mentioned these second lead-in wires.
5. display of organic electroluminescence according to claim 1, it is characterized in that above-mentioned these first, second and the 3rd organic electroluminescence cell be respectively ruddiness, green glow and blue-ray organic electroluminescent unit.
6. display of organic electroluminescence according to claim 1, it is characterized in that each first, second and the 3rd organic electroluminescence cell comprise:
Active member; And
Organic Light Emitting Diode, this Organic Light Emitting Diode is electrically connected with this active member.
7. display of organic electroluminescence according to claim 6 is characterized in that this active member comprises at least one thin-film transistor.
8. display of organic electroluminescence according to claim 1, it is characterized in that each first, second and the 3rd organic electroluminescence cell be respectively a top emission type organic electro luminescent unit.
9. display of organic electroluminescence according to claim 1, it is characterized in that each first, second and the 3rd organic electroluminescence cell be respectively a bottom-emission type organic electroluminescence cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510093004XA CN100534242C (en) | 2005-08-24 | 2005-08-24 | Organic electroluminescent display unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510093004XA CN100534242C (en) | 2005-08-24 | 2005-08-24 | Organic electroluminescent display unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1921713A CN1921713A (en) | 2007-02-28 |
| CN100534242C true CN100534242C (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510093004XA Expired - Fee Related CN100534242C (en) | 2005-08-24 | 2005-08-24 | Organic electroluminescent display unit |
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| Country | Link |
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| CN (1) | CN100534242C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894860A (en) * | 2010-06-17 | 2010-11-24 | 友达光电股份有限公司 | Electroluminescent display panel and pixel structure thereof |
| CN103794176B (en) * | 2013-12-26 | 2016-05-04 | 京东方科技集团股份有限公司 | A kind of pixel-driving circuit and driving method thereof, display unit |
| CN105047167B (en) * | 2015-08-28 | 2018-03-09 | 京东方科技集团股份有限公司 | A kind of source electrode drive circuit, display device and its driving method |
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2005
- 2005-08-24 CN CNB200510093004XA patent/CN100534242C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1921713A (en) | 2007-02-28 |
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Granted publication date: 20090826 Termination date: 20200824 |