CN205645814U - Organic luminous display panel - Google Patents
Organic luminous display panel Download PDFInfo
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- CN205645814U CN205645814U CN201620197875.XU CN201620197875U CN205645814U CN 205645814 U CN205645814 U CN 205645814U CN 201620197875 U CN201620197875 U CN 201620197875U CN 205645814 U CN205645814 U CN 205645814U
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Abstract
The utility model provides an organic luminous display panel, include: the first metal layer and second metal level, and be located the first metal layer is kept away from a plurality of pixel circuit of second metal level one side, the first metal layer includes the first electrode of a plurality of mutual insulation, the second metal level includes the second electrode of a plurality of mutual insulation, pixel circuit is including reseing the module, the module that resets with an electric connection, the multiplexing touch -control select switch module that is of the module that resets. The utility model provides an organic luminous display panel is through the multiplexing module that resets as touch -control select switch module, the timesharing drive that realizes the organic luminous display panel demonstration and touch, simultaneously, become pixel level size with cathode metal layer uniformly split, corresponding pixel circuit is connected through punching to the negative pole that corresponds every pixel circuit, realizes the evenly distributed of cathode current, avoids the negative pole mura's the circumstances to appear.
Description
Technical field
The present invention relates to display field, particularly relate to the design of a kind of organic electroluminescence display panel.
Background technology
Compared to display panels, Organic Light Emitting Diode (Organic Light Emitting Diode,
OLED) because of its self-luminous being had, quickly response, wide viewing angle with the first-class feature of flexible substrate can be produced on
And be applied to more and more in the middle of high-performance display field.
Along with the development of portable electronic display device, touch display unit provides a kind of new human-computer interaction
Interface, it is more direct, more humane on using.It is usual that current OLED display panel realizes touch controllable function
Use to separate OLED display screen and touch screen and do, the most again the two is combined, but this technology
There is the shortcomings such as light transmission rate is relatively low, display device is thicker；Or, touch electrode is made under base plate for packaging,
But this scheme is only limitted to the encapsulation of glass lid, after OLED display uses thin film encapsulation technology, i.e. can not meet
Demand.
Summary of the invention
In view of this, this utility model provides a kind of organic electroluminescence display panel, including: the first metal layer and
Second metal level, and it is positioned at the described the first metal layer multiple pixels away from described second metal level side
Circuit, described the first metal layer includes that the first electrode of multiple mutually insulated, described second metal level include
Second electrode of multiple mutually insulateds, described image element circuit includes reseting module, described reseting module and institute
Stating the first electrode electrical connection, described reseting module is multiplexed with touch-control and selects switch module.
Organic electroluminescence display panel provided by the utility model has the advantage that by multiplexing organic light emission
Reseting module in display panel pixel circuit selects switch module as touch-control, it is achieved organic light emitting display face
Plate shows and the timesharing driving touched；Meanwhile, cathode metal layer is evenly divided into Pixel-level by this utility model
Size, by using the anode of OLED and negative electrode as touch control electrode, corresponding each image element circuit
Negative electrode connects corresponding image element circuit by punching, it is achieved being uniformly distributed of cathode current, it is to avoid negative electrode occurs
The situation of Mura.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of organic electroluminescence display panel that the present embodiment provides；
Figure 1A is the schematic top plan view of organic electroluminescence display panel shown in Fig. 1；
Fig. 2 is the drive circuit figure of the organic electroluminescence display panel that the present embodiment provides；
Fig. 3 is the structural representation of a kind of organic electroluminescence display panel that existing design provides；
Fig. 3 A is the cross-sectional view of organic electroluminescence display panel shown in Fig. 3
Fig. 4 is the driver' s timing figure of image element circuit shown in Fig. 2；
Fig. 5 is the another kind of organic electroluminescence display panel structural representation that the present embodiment provides.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.May be appreciated
It is that specific embodiment described herein is used only for explaining, rather than to restriction of the present utility model.Separately
Outer also, it should be noted for the ease of describing, accompanying drawing illustrate only the portion relevant to this utility model
Point.
It should be noted that in the case of not conflicting, in embodiment in this utility model and embodiment
Feature can be mutually combined.Describe this practicality below with reference to the accompanying drawings and in conjunction with the embodiments in detail new
Type.
Fig. 1 is the structural representation of a kind of organic electroluminescence display panel that the present embodiment provides.Such as Fig. 1 institute
Showing, organic electroluminescence display panel 100 includes the first metal layer 110 and the second metal level 120, Yi Jiwei
In the first metal layer 110 away from multiple image element circuits 300 of the second metal level 120 side.Fig. 2 is this
The image element circuit figure of the organic electroluminescence display panel 100 that embodiment provides.As in figure 2 it is shown, image element circuit
300 include the first transistor M1, transistor seconds M2, third transistor M3, the 4th transistor M4,
5th transistor M5, the 6th transistor M6, the 7th transistor M7 and electric capacity C1, first controls
Signal end SCAN1, the second control signal end SCAN2, gate control signal end XSCAN and send out
Optical control signal end EMIT, data signal input Vdata, first Voltage processing unit 301, second
Voltage processing unit 302, tertiary voltage processing unit 303 and Organic Light Emitting Diode 304.Wherein,
6th transistor M6 constitutes the reseting module 310 of organic electroluminescence display panel drive circuit 300, plays
The effect of anode set.Specifically, reseting module 310 includes the first end N1, switch control terminal
XSCAN and the second end N2, the first end N1 are connected with tertiary voltage processing unit 303, the second end N2
It is connected with the anode of Organic Light Emitting Diode 304, when switch control terminal XSCAN input low level signal
Time, the 6th transistor M6 opens, and the reset signal of tertiary voltage processing unit 303 input is by resetting
First end N1 transmission of module 310, to the anode of Organic Light Emitting Diode 304, plays what anode resetted
Effect.Specific works principle about image element circuit 300 will be further discussed below below.
As shown in Figure 1, the first metal layer 110 of organic electroluminescence display panel 100 includes multiple the most exhausted
First electrode 112 of edge, the second metal level 120 includes the second electrode 121 of multiple mutually insulated.Its
In, between the first metal layer 110 and the second metal level 120, light emitting functional layer 140 is set.Corresponding diagram 2
Shown circuit diagram, the first electrode 112 is Organic Light Emitting Diode 304 and is connected with reseting module 310
Anode, the second electrode 121 is Organic Light Emitting Diode 304 and the second Voltage processing unit 302 even
The negative electrode connect.In order to make it easy to understand, in the following description the first electrode 112 is referred to as anode 112,
Second electrode 121 is referred to as negative electrode 121.
As it is shown in figure 1, organic electroluminescence display panel 100 also includes the 3rd metal level 130, wherein, need
It is noted that the 3rd metal level 130 is positioned in the film layer structure design of image element circuit, same with data wire
Layer is arranged.3rd metal level 130 arranges multiple 3rd electrode 131 and the 4th electrode 132, its Anodic
112 are connected with the 3rd electrode 131 on the 3rd metal level 130 by the first via 151, by pixel electricity
The electric current on road 300 transmits to anode 112.
Figure 1A is the schematic top plan view of organic electroluminescence display panel shown in Fig. 1.As it is shown in figure 1, this reality
Executing the corresponding negative electrode 121 of each pixel cell in example, the electrode shape of negative electrode 121 is square, greatly
Little control in 40～100 micrometer ranges.In order to by the voltage signal on the second Voltage processing unit 302
Transmission is to negative electrode 121, and in the present embodiment, negative electrode 121 first passes through the second via 152 and the 5th electrode 114
Connecting, the 5th electrode 114 is connected with the 4th electrode 132 on the 3rd metal level by via 153 again.
Wherein, the 5th electrode 114 and anode 112 arrange with layer, use same material, with along with technique make.
Can to the voltage signal that negative electrode 121 provides the second Voltage processing unit 302 to produce by this hole knockout
To improve negative electrode 121 current flow uniformity, it is to avoid the situation of Mura occurs.
Specifically, Fig. 3 will be further explained this hole knockout and provides cathode current uniformity, it is to avoid go out
The principle of existing Mura.Fig. 3 is the structural representation of a kind of organic electroluminescence display panel that existing design provides
Figure.Fig. 3 A is the corresponding top view of organic electroluminescence display panel shown in Fig. 3.In conjunction with Fig. 3 and Fig. 3 A,
Organic electroluminescence display panel 200 includes viewing area 210 and non-display area 220, and wherein, negative electrode 221 is
Whole of one flood covers viewing area 210, and is uniformly arranged multiple via 252 He at non-display area 220
253, negative electrode 221 connects the 3rd metal level 230 by RE via 205.Owing to negative electrode 221 is whole
Arrange, it is assumed that negative electrode size is 60mm*120mm, and the square resistance of negative electrode 221 is Rs, then Fig. 3 A
The square resistance of middle flood negative electrode 221 is 2Rs.In the present embodiment negative electrode 121 be shaped as square,
Assume that negative electrode size is 70um*70um, so, in the present embodiment, the square resistance of negative electrode 121 is Rs,
Thus, it is possible to find out, in the present embodiment, the square resistance of negative electrode 121 reduces further.Divide before comprehensive
Analysis, it can be seen that negative electrode 121 is designed to square, and each pixel cell correspondence one by the present embodiment
Individual negative electrode 121, is connected to the 3rd metal level 130 by via 152 and 153, reduces the second voltage
The impact of resistance in the signals transmission of processing unit 302, improves the uniformity of electric current on negative electrode 121,
Avoid the situation that Mura occurs.
Fig. 4 is the driver' s timing figure of image element circuit shown in Fig. 2.The image element circuit 300 that the present embodiment provides
In all of transistor be pmos type field-effect transistor, it is characterized by low level conducting high level cut
Only.It should be noted that all of transistor can also be that nmos type field effect is brilliant in the present embodiment
Body pipe, or CMOS-type field-effect transistor, select depending on concrete circuit design, the present invention couple
This is not construed as limiting.In conjunction with the image element circuit shown in Fig. 2, the driving of the present embodiment organic electroluminescence display panel
Method includes with the next stage:
The T1 moment, the first control signal end SCAN1 input low level signal, the second control signal end
SCAN2, gate control signal end XSCAN and LED control signal end EMIT input high level signal.
Because all of transistor is PMOS in image element circuit 300, and the feature of PMOS is low
Level turns on, and high level ends, so, in the T1 moment, only with the first control signal end SCAN1
The 5th transistor M5 conducting connected, remaining transistor is all in cut-off state.When the 5th transistor
During M5 conducting, tertiary voltage processing unit 303 input reference voltage signal Vref is to third transistor
The grid of M3.Therefore, the T1 moment is also referred to as the reset phase of image element circuit 300.
T2 moment, the second control signal end SCAN2 and gate control signal end XSCAN input low electricity
Ordinary mail number, the first control signal end SCAN1, LED control signal end EMIT input high level signal.
Similarly, coming from the cut-off of PMOS transistor high level, low level characteristic, in the T2 moment, only
The transistor seconds being connected with the second control signal end SCAN2 and gate control signal end XSCAN
M2, the 4th transistor M4, the 6th transistor M6 conducting, remaining transistor is all in cut-off state.
Due to the T1 moment, the grid voltage of third transistor M3 is reset as Vref, therefore, and the 3rd crystal
Pipe M3 is in the conduction state in the starting stage in T2 moment.When transistor seconds M2, third transistor
When M3, the 4th transistor M4 are all in conducting state, data signal end Vdata is by data signal Vdata
Transmit the grid to third transistor M3, owing to Vdata signal is a pulse signal constantly given,
So, when Vdata signal constantly transmits the grid to third transistor M3, will constantly draw high
The grid voltage of third transistor M3, when the grid voltage of third transistor M3 is drawn high to Vdata-Vth
Time, the cut-off of third transistor M3, wherein, Vth is the threshold voltage of third transistor M3.Now,
Image element circuit 300 completes data write and valve value compensation process.On the other hand, in the T2 moment, gating
Control signal end XSCAN is also low level signal, and the 6th transistor M6 conducting, tertiary voltage processes
Unit 303 is by the anode of reference signal Vref transmission to Organic Light Emitting Diode 304, to organic light emission two
The anode of pole pipe 304 resets, and therefore, the module at the 6th transistor M6 place is also called reset mould
Block 310.The Main Function of reseting module 310 is to avoid data to write and during valve value compensation, circuit
In leakage current cause Organic Light Emitting Diode 304 luminous, produce the problem that dark-state is the darkest；Meanwhile, have
Machine light emitting diode often completes once luminous, and the anode of itself and negative electrode have part remaining voltage, due to
Negative electrode connects constant voltage source, so, main remaining voltage is present in the sun of Organic Light Emitting Diode
Pole, therefore, the anode in the moment of T2 reset can eliminate remaining voltage to Organic Light Emitting Diode next
The impact of secondary luminescence process.
The T3 moment, LED control signal end EMIT input low level signal, the first control signal end
SCAN1, the second control signal end SCAN2 and gate control signal end XSCAN input high level
Signal.Under the low level signal of EMIT controls, the first transistor M1, the 7th transistor M7 lead
Logical, Organic Light Emitting Diode 304 is luminous.
The T4 moment, gate control signal end XSCAN input low level signal, the first control signal end
SCAN1, the second control signal end SCAN2 and gate control signal end XSCAN input high level
Signal.Under the low level signal of XSCAN controls, the 6th transistor M6 conducting, i.e. reseting module
310 conductings.Now, the first end N1 reception tertiary voltage processing unit 303 of reseting module 310 is defeated
The touch-control entered drives signal, is transferred to the second end N2, namely by the 6th transistor M6 of conducting
The anode of Organic Light Emitting Diode 304.Meanwhile, the negative electrode 302 of Organic Light Emitting Diode 304 is based on touching
Control drives signal to produce touch sense signals to the second Voltage processing unit 302.Specifically, in conjunction with Fig. 1,
The touch-control of tertiary voltage processing unit 303 is driven signal to transmit to anode 112 by image element circuit 300, touches
When touching generation, negative electrode 121 touch-control based on anode 112 drives signal to produce sensing signal, and by the
Two via the 152, the 5th electrode the 114, the 3rd vias 153 and the 4th electrode 132 transmit to the second voltage
Processing unit 302.By analyzing corresponding sensing signal, it is judged that corresponding touch location.
As it has been described above, the organic electroluminescence display panel 100 that the present embodiment provides is by multiplexing reseting module
310 timesharing realizing display and touch-control drive, and wherein, T1～the T3 moment is organic electroluminescence display panel 100
The display stage, the T4 moment is the touch-control stage of organic electroluminescence display panel 100；Meanwhile, anode is made
For touch-control drive electrode, negative electrode is as touch-control sensing electrode.Alternatively, the present embodiment anode is as touching
Control drive electrode, negative electrode is as touch-control sensing electrode.Specifically, image element circuit 300 is by the second voltage
The touch-control that reason unit 302 produces drives signal transmission to negative electrode 121, when touch occurs, anode 112 pole
Touch-control based on negative electrode 121 drives signal to produce touch sense signals, and by the reseting module of conducting
Touch sense signals is transmitted to tertiary voltage processing unit 303 by 310, is received by computational analysis
Touch sense signals judges touch location.
The organic electroluminescence display panel 100 that the present embodiment provides is possible not only to use above-mentioned mutual capacitance type touch-control
Principle, is also applied for self-tolerant touch-control.Specifically, in the T4 moment, gate control signal end XSCAN
Input low level signal, reseting module 310 turns on.Unlike mutual capacitance type touch-control, now, reset
First end N1 of module 310 receives a constant voltage signal of tertiary voltage processing unit 303 input,
The Vref signal in such as T1 moment, is transferred to organic light-emitting diodes by the 6th transistor M6 of conducting
The anode of pipe 304.And the negative electrode 302 of Organic Light Emitting Diode 304 receives the second Voltage processing unit 302
The touch-control produced drives signal, and drives signal to produce touch sense signals at the second voltage based on touch-control
Reason unit 302.Specifically, in conjunction with Fig. 1, tertiary voltage processing unit 303 is produced by image element circuit 300
A raw constant voltage signal transmission is to anode 112, and the second Voltage processing unit 302 is by the 4th electrode
132, touch-control is driven signal to transmit Zhiyin by the 3rd via the 153, the 5th electrode 114 and the second via 152
Pole 121, when touching generation, negative electrode 121 drives signal to produce touch sense signals based on touch-control, and leads to
Cross the second via the 152, the 5th electrode the 114, the 3rd via 153 and the 4th electrode 132 transmits to second
Voltage processing unit 302.By analyzing corresponding sensing signal, it is judged that corresponding touch location.
Fig. 5 is the another kind of organic electroluminescence display panel structural representation that the present embodiment provides.With Figure 1A institute
Unlike the organic electroluminescence display panel structure shown, organic electroluminescence display panel 400 is not each the moon
Pole block all connects one article of the 4th electrode, but adjacent several pieces of negative electrodes share one article of the 4th electrode, then by the
Four electrodes are connected to the second Voltage processing unit.Specifically, as it is shown in figure 5, organic electroluminescence display panel 400
Including multiple first electrodes 412, multiple second electrodes 421, wherein with several second electrodes adjacent in a line (as
Shown in Fig. 5 4211,4212,4213) it is connected by wire 424, then by the first via 452 and the
Two vias 453 are connected with the 4th electrode 432, are then received at the second voltage by the 4th electrode 432
The touch-control that reason unit 402 produces drives signal, simultaneously by the 4th electrode 432 to the second Voltage processing unit
402 send touch sense signals.For self-capacitance touch-control, so be advantageous in that can be by detection zone in design
(the detection region of Fig. 5 is equivalent to Figure 1A and detects 3 times of region) is strengthened in territory, reduces the operand of IC,
Reduce via and the design of the 4th electrode, Simplified flowsheet and reduction production cost simultaneously.
In sum, it is the most permissible that the touch-control display panel that this utility model provides need not additionally arrange touch screen
Realize touch function, select switch module by the reseting module in multiplexing image element circuit as touch-control, it is achieved
Organic electroluminescence display panel shows and the timesharing driving touched；Meanwhile, by cathode metal layer even partition imaging
Element level size, by using the anode of OLED and negative electrode as touch control electrode, corresponding each pixel electricity
The negative electrode on road connects corresponding image element circuit by punching, it is achieved being uniformly distributed of cathode current, it is to avoid negative electrode
The situation of Mura occurs.
It should be noted that above are only preferred embodiment of the present utility model and institute's application technology principle.
It will be appreciated by those skilled in the art that this utility model is not limited to specific embodiment described here, to ability
Various obvious change can be carried out for field technique personnel, readjust and substitute without departing from this reality
With novel protection domain.Therefore, although by above example, this utility model has been carried out the most detailed
Thin explanation, but this utility model is not limited only to above example, without departing from this utility model structure
In the case of think of, it is also possible to include other Equivalent embodiments more, and scope of the present utility model is by appended
Right determine.
Claims (12)
1. an organic electroluminescence display panel, including: the first metal layer and the second metal level, and it is positioned at the described the first metal layer multiple image element circuits away from described second metal level side, described the first metal layer includes the first electrode of multiple mutually insulated, described second metal level includes the second electrode of multiple mutually insulated, described image element circuit includes that reseting module, described reseting module electrically connect with described first electrode, and described reseting module is multiplexed with touch-control and selects switch module.
Display floater the most according to claim 1, it is characterised in that described reseting module includes that the first end, switch control terminal and the second end, described second end electrically connect with described first electrode.
Display floater the most according to claim 1, it is characterised in that described first electrode is anode, described second electrode is negative electrode.
Display floater the most according to claim 2, it is characterised in that described first electrode is multiplexed with in touch-control drive electrode and touch-control sensing electrode, described second electrode is multiplexed with another in touch-control drive electrode and touch-control sensing electrode.
Display floater the most according to claim 4, it is characterised in that in the display stage, described reseting module is for reset signal transmission extremely described second end by described first end input, it is achieved the reset of described image element circuit；
In the touch-control stage, described reseting module is for driving signal transmission to drive signal to produce touch sense signals to described first electrode, described second electrode based on described touch-control the touch-control of described first end input, it is achieved touch controllable function；Or,
In the touch-control stage, driving signal at described second electrode input touch-control, described first electrode drives signal to produce touch sense signals based on described touch-control, and described reseting module is for detecting the touch sense signals on described first electrode, it is achieved touch controllable function.
Display floater the most according to claim 2, it is characterised in that described second electrode is multiplexed with touch-control drive electrode and touch-control sensing electrode.
Display floater the most according to claim 6, it is characterised in that in the display stage, described reseting module is for reset signal transmission extremely described second end by described first end input, it is achieved the reset of described image element circuit；
In the touch-control stage, described second electrode receives touch-control and drives signal, and drives signal to produce touch sense signals based on described touch-control, it is achieved touch controllable function.
Display floater the most according to claim 7, it is characterised in that in the touch-control stage, described reseting module inputs a constant signal to described first electrode from described first end.
Display floater the most according to claim 3, it is characterized in that, also include that the 3rd metal level, described 3rd metal level include the 3rd electrode and the 4th electrode, described 3rd electrode electrically connects with described first electrode, and described 4th electrode electrically connects with described second electrode.
Display floater the most according to claim 9, it is characterised in that described 3rd electrode is connected with described first electrode by the first via.
11. display floaters according to claim 9, it is characterised in that described the first metal layer also includes the 5th electrode, described 4th electrode is connected with described 5th electrode by the second via, and described 5th electrode is connected with described second electrode by the 3rd via.
12. display floaters according to claim 1, it is characterised in that described second electrode be shaped as square, the length of side is in 40～100 micrometer ranges.
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| CN201620197875.XU CN205645814U (en) | 2016-03-15 | 2016-03-15 | Organic luminous display panel |
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| CN201620197875.XU CN205645814U (en) | 2016-03-15 | 2016-03-15 | Organic luminous display panel |
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| CN107103866A (en) * | 2017-04-19 | 2017-08-29 | 信利（惠州）智能显示有限公司 | The big board checking devices of AMOLED and its detection method |
| CN107424558A (en) * | 2017-06-22 | 2017-12-01 | 上海中航光电子有限公司 | A kind of light emission drive circuit and organic electroluminescence display panel |
| CN107958145A (en) * | 2016-11-03 | 2018-04-24 | 深圳信炜科技有限公司 | Display device and electronic device |
| CN108336116A (en) * | 2018-02-08 | 2018-07-27 | 京东方科技集团股份有限公司 | A kind of OLED array and preparation method thereof, display device |
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| CN107424558A (en) * | 2017-06-22 | 2017-12-01 | 上海中航光电子有限公司 | A kind of light emission drive circuit and organic electroluminescence display panel |
| CN107424558B (en) * | 2017-06-22 | 2020-04-03 | 上海中航光电子有限公司 | Light-emitting drive circuit and organic light-emitting display panel |
| CN108336116A (en) * | 2018-02-08 | 2018-07-27 | 京东方科技集团股份有限公司 | A kind of OLED array and preparation method thereof, display device |
| CN109037285A (en) * | 2018-07-26 | 2018-12-18 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof, display device, mask plate component |
| CN109671747A (en) * | 2018-12-12 | 2019-04-23 | 武汉华星光电技术有限公司 | A kind of OLED display |
| CN111092108A (en) * | 2019-12-30 | 2020-05-01 | 上海天马微电子有限公司 | Display panel and display device |
| CN111092108B (en) * | 2019-12-30 | 2022-09-09 | 上海天马微电子有限公司 | Display panel and display device |
| CN111625133A (en) * | 2020-05-15 | 2020-09-04 | 武汉华星光电半导体显示技术有限公司 | OLED display panel |
| CN114120813A (en) * | 2020-08-26 | 2022-03-01 | 深圳市柔宇科技股份有限公司 | Display panel and electronic device |
| CN113421904A (en) * | 2021-06-18 | 2021-09-21 | 合肥维信诺科技有限公司 | Display panel and manufacturing method thereof |
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