CN206628250U - Organic electroluminescence display device and method of manufacturing same - Google Patents
Organic electroluminescence display device and method of manufacturing same Download PDFInfo
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Abstract
The utility model embodiment discloses organic electroluminescence display device and method of manufacturing same, including：Display panel, it includes being arranged in multiple pixel cells of array, a plurality of select lines and and a plurality of data lines；Gate driving circuit, it controls the gating of the transistor in pixel cell described in each row in the array of the display panel；Source electrode drive circuit, for applying gray scale voltage to each row pixel cell in the array of the display panel by a plurality of data lines, and sensing signal is obtained from the display panel by a plurality of sense line, the gray scale voltage is adjusted according to the sensing signal；And sequential control circuit, for providing SECO to the gate driving circuit and the source electrode drive circuit.So as to overcome time sequence difference problem when realizing the feedback compensation of display brightness, the signal wire quantity and chip pin quantity of chip chamber are reduced.
Description
Technical field
Display technology field is the utility model is related to, in particular it relates to organic electroluminescence display device and method of manufacturing same and its driving electricity
Road.
Background technology
Amoled including circuit to supply zero data (Active Matrix Organic Light Emitting
Diode, AMOLED) it is a kind of organic electroluminescence display device and method of manufacturing same, it has, and the response time is fast, luminous efficiency is high, brightness is high, wide
The advantages that visual angle.
Mainly include display panel, gate driving circuit, source electrode drive circuit and sequential in OLED
Control circuit.Wherein, display panel includes the pel array formed by multiple pixel cells, and each pel array includes can
Itself luminous Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) and for controlling OLED's
The thin film transistor (TFT) (TFT) of driving current；Gate driving circuit is real by controlling the grid of the thin film transistor (TFT) in display panel
Now to the conducting and shut-off of each row pixel in pel array, that is, realize the scanning of heap display panel；Source electrode drive circuit is according to regarding
Frequency evidence provides gray scale voltage to realize the regulation of the brightness to each pixel cell to display panel；Sequential control circuit is used to carry
For clock signal and control signal.In the ideal case, identical TFT is designed in all pixel cells of pel array,
So that the TFT electrical characteristics (including threshold voltage, mobility etc.) in each pixel cell are identical, so that each pixel cell
Brightness is identical to reach the purpose of the brightness uniformity of display panel.
However, in practice, due to the TFT in each pixel cell and OLED by technique is unstable, parameter drift and
The influence of the uncontrollable factors such as device aging, OLED brightness can produce deviation, that is, the problem of display is inconsistent occur.
The display inconsistence problems of AMOLED display panels are far longer than liquid crystal panel, and the area of AMOLED display panels
Bigger, display inconsistence problems are more serious.Existing technology is to the current signal in display panel by source electrode drive circuit
Or voltage signal is sampled and sampled result is fed back into sequential control circuit, SECO electricity in the form of feedback signal
Road is compensated to the feedback signal so that corresponding current signal or voltage signal are compensated in display panel, to reach
The brightness of display panel is consistent.Generally, source electrode drive circuit includes multiple source driving chips, sequential control circuit by comprising when
The chip of sequence control circuit realizes, due to each source driving chip and comprising there is more signal lines between timing controller
For transmitting feedback signal, therefore the signal wire meeting showed increased in the display device, the chip comprising sequential control circuit
The many corresponding pins of increase are needed, bring the rising of PCB costs, and PCB width is broadened.Meanwhile different source electrodes drive
The distance of dynamic chip to the chip comprising sequential control circuit is different, therefore each source driving chip is with including sequential control circuit
Chip between sequential it is different, also increase the design difficulty of sequential control circuit.And with OLED market competitions increasingly
Fierceness, the area of OLED display panel is increasing, and different source driving chips are defeated to the chip institute comprising sequential control circuit
Time sequence difference between each feedback signal gone out is increasing, it is therefore desirable to a kind of to be mended in the feedback for realizing display brightness
The OLED that time sequence difference problem is overcome while repaying and can reduce the signal wire quantity and chip pin quantity of chip chamber simultaneously shows
Showing device.
Utility model content
In order to solve the above-mentioned problems of the prior art, the utility model offer is a kind of to realize display brightness
Time sequence difference problem is overcome while feedback compensation and the signal wire quantity and chip pin quantity of chip chamber can be reduced simultaneously
Organic electroluminescence display device and method of manufacturing same.
According to the utility model embodiment, there is provided a kind of organic electroluminescence display device and method of manufacturing same, including：Display panel, its
Including be arranged in multiple pixel cells of array, connected a plurality of select lines corresponding with the multiple pixel cell and with it is described
The corresponding connected a plurality of data lines of multiple pixel cells, each pixel cell include transistor and organic light-emitting diodes
Pipe；Gate driving circuit, it passes through pixel described in each row in the array of display panel described in a plurality of gating line traffic control
The gating of the transistor in unit；Source electrode drive circuit, for by a plurality of data lines to described in the display panel
Each row pixel cell in array applies gray scale voltage, and obtains sensing letter from the display panel by a plurality of sense line
Number, the gray scale voltage is adjusted according to the sensing signal；And sequential control circuit, for the gate driving circuit and
The source electrode drive circuit provides SECO.
Preferably, the source electrode drive circuit includes：Detection module, for obtaining the sense by a plurality of sense line
Survey signal；And drive module, for by a plurality of data lines to each row pixel cell in the display panel
Apply gray scale voltage；Adjustment module, for the gray scale voltage to be adjusted according to the sensing signal.
Preferably, a plurality of data lines is equal with the quantity of a plurality of sense line, every sense line be used for from
The sensing signal is read in the pixel cell corresponding to one data wire.
Preferably, the quantity of a plurality of sense line is less than the quantity of a plurality of data lines, and every sense line is used
In reading the sensing signal from multiple pixel cells corresponding to multiple data wires.
Preferably, the adjustment module is used for according to the sensing signal from each sense line to the reading
The gray scale voltage applied corresponding to line on a plurality of data wire is adjusted.
Preferably, the sensing signal includes voltage signal or current signal.
Preferably, the sensing signal includes flowing through the driving current of the transistor, and the detection module includes being used for
Obtain the current detection circuit of the sensing signal.
Preferably, the sensing signal includes the voltage of the transistor output, and the detection module includes being used to obtain
Obtain the voltage detecting circuit of the sensing signal.
Preferably, the source electrode drive circuit is realized by multiple source driving chips, and a plurality of data lines is divided into more
Group, data wire described in every group and its corresponding one or more sense line are connected with the same source driving chip.
Preferably, the multiple source electrode drive circuit is realized by single source driving chip.
Compared with traditional OLED display, the organic electroluminescence display device and method of manufacturing same of the utility model embodiment utilizes bag
Source electrode drive circuit containing adjustment module realizes the luminance compensation of OLED display so that the brightness uniformity of display panel is simultaneously
And the wiring quantity between sequential control circuit and source electrode drive circuit and corresponding number of pin are greatly reduced, so as to drop
The low packaging cost of each chip, reduce and be used for the area for carrying the PCB of each circuit in OLED display, reduce PCB
Cost；Also avoid simultaneously in the case where source electrode drive circuit is realized by multiple source driving chips, each source drive
Time sequence difference problem between chip and timing controller, eliminates the compensating module in sequential control circuit, so as to reduce
The design difficulty of sequential control circuit.
Brief description of the drawings
By the description to the utility model embodiment referring to the drawings, of the present utility model above-mentioned and other mesh
, feature and advantage will be apparent from.
Fig. 1 shows the schematic block diagram of traditional organic electroluminescence display device and method of manufacturing same using image quality compensation technology.
Fig. 2 shows the schematic block diagram of the organic electroluminescence display device and method of manufacturing same of the utility model embodiment.
Fig. 3 shows the partial schematic block diagram of the source electrode drive circuit of the utility model embodiment.
Embodiment
The utility model is more fully described hereinafter with reference to accompanying drawing.In various figures, identical element is using similar
Reference represent.For the sake of clarity, the various pieces in accompanying drawing are not necessarily to scale.In addition, do not have in figure
The lead-out wire in addition to corresponding driving electrodes are with sensing electrode is drawn, and some known parts may be not shown.
It describe hereinafter many specific details of the present utility model, such as the structure of device, material, size, place
Science and engineering skill and technology, to be more clearly understood that the utility model.But just as the skilled person will understand,
The utility model can not be realized according to these specific details.
Fig. 1 shows the schematic block diagram of traditional organic electroluminescence display device and method of manufacturing same using image quality compensation technology.
As shown in figure 1, traditional organic electroluminescence display device and method of manufacturing same 1000 includes display panel 1100, gate driving circuit
1200th, multiple source electrode drive circuits 1300 and sequential control circuit 1400.Display panel 1100 includes a plurality of data lines D [1]
It is respectively disposed to D [m], the select lines G [1] to G [n] intersected with a plurality of data lines and in the form of an array data wire
With multiple pixel cells of the infall of select lines, wherein m and n are positive integers.Also include and each picture in display panel 1100
Plain unit corresponding connected sense line S [1] to S [a], a are the positive integer equal to m or less than m.Data wire D [1] to D [m] is divided
To be multigroup, accordingly, sense line S [1] to S [a] is grouped in the same way, every group of data wire and corresponding one group of sense line
It is connected with same source electrode drive circuit 1300.
Each pixel cell can include Organic Light Emitting Diode (OLED), thin film transistor (TFT) (TFT), first switch TFT
Storage with second switch TFT and for external compensation.The TFT for forming pixel cell can be by for p-type TFT or N
Type TFT.In addition, non-crystalline silicon, polysilicon or oxide can be included by forming the TFT of pixel cell semiconductor layer.
In the array of pixel cell, positioned at one of the pixel cell of same row and data wire D [1] to D [m] and read
One of line S [1] to S [a] is corresponding to be connected, corresponding with one of select lines G [1] to G [n] connected positioned at the pixel cell of same a line.
Gate driving circuit 1200 gates certain row pixel cell in display panel 1100 by select lines G [1] to G [n],
Source electrode drive circuit 1300 provides gray scale voltage, source drive electricity by data wire D [1] to D [m] to the pixel cell being strobed
Road 1300 receives sensing signal by sense line S [1] to S [a].
Detection module and drive module are included in each source electrode drive circuit 1300, detection module passes through connected a plurality of reading
Outlet obtains sensing signal, and according to sensing signal to the output feedback signal of sequential control circuit 1400, drive module is used to produce
Raw gray scale voltage.Sequential control circuit 1400 exports the first timing control signal G_ctl to gate driving circuit 1200, to source electrode
Drive circuit 1300 corresponds to the second timing control signal S_ctl [1] to S_ctl [b] of output respectively, and wherein b is non-zero natural number.
Compensating module is included in sequential control circuit 1400, the compensating module receives respectively comes from the anti-of multiple source electrode drive circuits
Feedback signal fb [k:1] (k is non-zero natural number), and according to feedback signal fb [k:1] respectively to the second timing control signal S_ctl
[1] compensated to S_ctl [b], so that the gray scale voltage quilt that the drive module in source electrode drive circuit 1300 is exported
Regulation, realizes the compensation of pixel cell.
Prior art by the compensation of accomplished second timing control signal of the voltage in sensor pixel unit or electric current,
And gray scale voltage is adjusted according to the second timing control signal after the compensation, realize the brightness to pixel cell in display panel
Regulation, reaches the consistent purpose of brightness.
However, under normal conditions, source electrode drive circuit includes multiple source driving chips, sequential control circuit by comprising
The chip of sequential control circuit is realized, due to the distance between multiple source driving chips and the chip comprising sequential control circuit
Differ, therefore the feedback signal fb [k that each source driving chip is exported:1] chip for including sequential control circuit is reached
Sequential differ, result in sequential control circuit 1400 design difficulty increase；Meanwhile the chip comprising sequential control circuit
Exist between each source driving chip and be used to transmit feedback signal fb [k:1] a large amount of lines, and needed on chip
The pin corresponding with these lines is set respectively, therefore improves PCB cost, broaden PCB width, and is increased
Complexity of the organic display device in structure.
Below, the utility model is described in detail referring to the drawings.
Fig. 2 shows the schematic block diagram of the organic electroluminescence display device and method of manufacturing same of the utility model embodiment.
As shown in Fig. 2 the organic electroluminescence display device and method of manufacturing same 2000 of the utility model embodiment include display panel 2100,
Gate driving circuit 2200, source electrode drive circuit 2300 and sequential control circuit 2400.Display panel 1100 includes a plurality of number
It is arranged in the form of an array according to line D [1] to D [m], the select lines G [1] to G [n] intersected with a plurality of data lines and respectively
In multiple pixel cells of the infall of data wire and select lines, wherein m and n are positive integers.Also include in display panel 1100
Connected sense line S [1] to S [a] corresponding with each pixel cell, a are the positive integer equal to m or less than m.Source electrode drive circuit
1300 can be realized by single source driving chip, can also be realized jointly by multiple source driving chips.Work as source drive
When circuit has multiple source driving chips to realize jointly, data wire D [1] to D [m] be divided into it is multigroup, accordingly, sense line S [1]
It is grouped in the same way to S [a], every group of data wire and corresponding one group of sense line and same source driving chip phase
Even.
Each pixel cell can include Organic Light Emitting Diode (OLED), thin film transistor (TFT) (TFT), first switch TFT
Storage with second switch TFT and for external compensation.The TFT for forming pixel cell can be by for p-type TFT or N
Type TFT.In addition, non-crystalline silicon, polysilicon or oxide can be included by forming the TFT of pixel cell semiconductor layer.
In the array of pixel cell, positioned at one of the pixel cell of same row and data wire D [1] to D [m] and read
One of line S [1] to S [a] is corresponding to be connected, corresponding with one of select lines G [1] to G [n] connected positioned at the pixel cell of same a line.
Gate driving circuit 2200 gates certain row pixel cell in display panel 2100 by select lines G [1] to G [n],
Source electrode drive circuit 2300 provides gray scale voltage, source drive electricity by data wire D [1] to D [m] to the pixel cell being strobed
Road 2300 receives sensing signal by sense line S [1] to S [a].
Sequential control circuit 2400 exports the first timing control signal G_ctl to gate driving circuit 2200, source electrode is driven
Dynamic circuit 2300 exports the second timing control signal S_ctl [1] to S_ctl [c], and wherein c is non-zero natural number.
It is different from traditional organic electroluminescence display device and method of manufacturing same, detection mould is included in source electrode drive circuit 2300
Block, drive module and adjustment module, detection module obtain sensing signal by connected a plurality of sense line, and adjustment module is according to sense
Survey signal gray scale voltage is compensated so that in organic electroluminescence display device and method of manufacturing same display panel brightness uniformity.
Fig. 3 shows the partial schematic block diagram of the source electrode drive circuit of the utility model embodiment.Below with corresponding p datas
Illustrate exemplified by the local circuit of line and the source electrode drive circuit of q bar sense lines, wherein p and q are non-zero natural number.
As shown in figure 3, source electrode drive circuit 2300 includes detection module 2310, adjustment module 2320 and drive module
2330.Detection module 2310 reads the sensing signal Vs [1] to Vs [q] of respective pixel unit by sense line S [1] to S [q],
Adjustment module 2320 produces Regulate signal cp [1] to cp [q] according to sensing signal Vs [1] to Vs [q] and inputted to drive module
2330 so that the gray scale voltage that drive module 2330 is exported by data wire D [1] to D [p] is adjusted, so that display surface
The display brightness of the OLED in corresponding pixel cell in plate is adjusted to realize the uniformity of display panel brightness.
In display panel, the quantity of sense line can be identical with the quantity of data wire, i.e., p is equal with q.Other one
In a little embodiments, the quantity of sense line can be less than the quantity of data wire, i.e. q is less than p, and every sense line is used for from more datas
Sensing signal is read in multiple pixel cells corresponding to line, adjustment module exports corresponding Regulate signal to drive module and caused
Gray scale voltage in a plurality of data lines corresponding with the sense line is compensated.
It should be noted that sensing signal Vs of the source electrode drive circuit 2300 read-out by by sense line S [1] to S [a]
[1] can be to Vs [a] the driving current or TFT in each pixel cell for flowing through the TFT in each pixel cell output
Terminal voltage or any parameter related to the luminosity of Organic Light Emitting Diode.As sensing signal Vs [1] to Vs
[a] is that detection module 2310 includes current detection circuit, for examining when flowing through the driving current of the TFT in each pixel cell
Survey the driving current of transistor in respective pixel unit；When sensing signal Vs [1] to Vs [a] is TFT in each pixel cell
During output end voltage, detection module 2310 includes being used for the voltage detecting circuit for detecting the voltage.In above-described embodiment, source electrode drives
Adjustment module in dynamic circuit realizes the ash exported to drive module by generating the form of regulation voltage according to sensing signal
The regulation of rank voltage, in some alternative embodiments, the adjustment module in source electrode drive circuit can be rational by other
What mode made the gray scale voltage that drive module exported is worth to compensation.
Compared with traditional OLED display, the utility model embodiment utilizes the source drive electricity comprising adjustment module
Road realizes the compensation of the display brightness of OLED display so that the brightness uniformity of display panel and greatly reduces sequential
Wiring quantity and corresponding number of pin between control circuit and source electrode drive circuit, so as to reduce the encapsulation of each chip
Cost, reduce and be used for the area for carrying the PCB of each circuit in organic electroluminescence display device and method of manufacturing same, reduce PCB cost；
Avoid simultaneously in the case where source electrode drive circuit is realized by multiple source driving chips, each source driving chip and sequential
Time sequence difference problem between control chip, eliminates the compensating module in sequential control circuit, so as to reduce SECO
The design difficulty of circuit.
In this manual, the concept " OK " with " row " is not limited to shown in horizontal concept and accompanying drawing shown in accompanying drawing
Longitudinal concept, according to being actually needed, meet the embodiment of the utility model general principle in the scope of protection of the utility model
It is interior.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, article or equipment including a series of elements not only include those key elements, and
Also include the other element that is not expressly set out, or also include for this process, article or the intrinsic key element of equipment.
In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including the key element
Process, other identical element also be present in article or equipment.
According to embodiment of the present utility model as described above, these embodiments do not have all details of detailed descriptionthe,
Also it is only described specific embodiment not limit the utility model.Obviously, as described above, many modification and change can be made
Change.This specification is chosen and specifically describes these embodiments, is to preferably explain that principle of the present utility model and reality should
With so that skilled artisan can repairing using the utility model and on the basis of the utility model well
Change use.The utility model is only limited by claims and its four corner and equivalent.
Claims (10)
1. a kind of organic electroluminescence display device and method of manufacturing same, including：
Display panel, it include being arranged in multiple pixel cells of array, it is corresponding with the multiple pixel cell be connected it is a plurality of
Select lines and connected a plurality of data lines corresponding with the multiple pixel cell, each pixel cell include transistor
And Organic Light Emitting Diode；
Gate driving circuit, it passes through pixel described in each row in the array of display panel described in a plurality of gating line traffic control
The gating of the transistor in unit；
Source electrode drive circuit, for by a plurality of data lines to each row pixel list in the array of the display panel
Member applies gray scale voltage, and obtains sensing signal from the display panel by a plurality of sense line, is adjusted according to the sensing signal
Save the gray scale voltage；And
Sequential control circuit, for providing SECO to the gate driving circuit and the source electrode drive circuit.
2. organic electroluminescence display device and method of manufacturing same according to claim 1, wherein, the source electrode drive circuit includes：
Detection module, for obtaining the sensing signal by a plurality of sense line；And
Drive module, for applying GTG to each row pixel cell in the display panel by a plurality of data lines
Voltage；
Adjustment module, for the gray scale voltage to be adjusted according to the sensing signal.
3. organic electroluminescence display device and method of manufacturing same according to claim 2, wherein, a plurality of data lines and a plurality of reading
The quantity of outlet is equal, and every sense line is used for from the pixel cell corresponding to a data wire described in reading
Sensing signal.
4. organic electroluminescence display device and method of manufacturing same according to claim 2, wherein, the quantity of a plurality of sense line is less than institute
The quantity of a plurality of data lines is stated, every sense line is used for from multiple pixel cells corresponding to multiple data wires
Read the sensing signal.
5. organic electroluminescence display device and method of manufacturing same according to claim 4, wherein, the adjustment module is used for according to from every
The sensing signal of one sense line is electric to the GTG applied corresponding to the sense line on a plurality of data wire
Pressure is adjusted.
6. organic electroluminescence display device and method of manufacturing same according to claim 2, wherein, the sensing signal include voltage signal or
Person's current signal.
7. organic electroluminescence display device and method of manufacturing same according to claim 6, wherein, the sensing signal includes flowing through the crystalline substance
The driving current of body pipe, the detection module include being used for the current detection circuit for obtaining the sensing signal.
8. organic electroluminescence display device and method of manufacturing same according to claim 6, wherein, the sensing signal includes the transistor
The voltage of output end, the detection module include being used for the voltage detecting circuit for obtaining the sensing signal.
9. organic electroluminescence display device and method of manufacturing same according to claim 8, wherein, the source electrode drive circuit is by multiple source electrodes
Driving chip realize, a plurality of data lines be divided into it is multigroup, described in data wire described in every group and its corresponding one or more
Sense line is connected with the same source driving chip.
10. organic electroluminescence display device and method of manufacturing same according to claim 8, wherein, the multiple source electrode drive circuit is by list
Individual source driving chip is realized.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531068A (en) * | 2016-12-27 | 2017-03-22 | 北京集创北方科技股份有限公司 | Organic electroluminesence display device |
| CN109036291A (en) * | 2018-09-18 | 2018-12-18 | 京东方科技集团股份有限公司 | A kind of display panel and its control method, display device |
| CN109119022A (en) * | 2018-09-12 | 2019-01-01 | 武汉天马微电子有限公司 | Luminance compensation unit and method of OLED (organic light emitting diode) pixel, display panel and device |
| CN110047434A (en) * | 2019-04-08 | 2019-07-23 | 深圳市华星光电半导体显示技术有限公司 | The compensation system and its compensation method of organic luminescent device |
| WO2021207889A1 (en) * | 2020-04-13 | 2021-10-21 | 京东方科技集团股份有限公司 | Display panel and display device |
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2016
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531068A (en) * | 2016-12-27 | 2017-03-22 | 北京集创北方科技股份有限公司 | Organic electroluminesence display device |
| CN109119022A (en) * | 2018-09-12 | 2019-01-01 | 武汉天马微电子有限公司 | Luminance compensation unit and method of OLED (organic light emitting diode) pixel, display panel and device |
| CN109036291A (en) * | 2018-09-18 | 2018-12-18 | 京东方科技集团股份有限公司 | A kind of display panel and its control method, display device |
| CN109036291B (en) * | 2018-09-18 | 2020-11-10 | 京东方科技集团股份有限公司 | Display panel, control method thereof and display device |
| CN110047434A (en) * | 2019-04-08 | 2019-07-23 | 深圳市华星光电半导体显示技术有限公司 | The compensation system and its compensation method of organic luminescent device |
| WO2021207889A1 (en) * | 2020-04-13 | 2021-10-21 | 京东方科技集团股份有限公司 | Display panel and display device |
| US11386864B2 (en) | 2020-04-13 | 2022-07-12 | Hefei Boe Display Technology Co., Ltd. | Display panel and display device |
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