CN206947383U - Amoled display device - Google Patents
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- CN206947383U CN206947383U CN201721294531.1U CN201721294531U CN206947383U CN 206947383 U CN206947383 U CN 206947383U CN 201721294531 U CN201721294531 U CN 201721294531U CN 206947383 U CN206947383 U CN 206947383U
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Abstract
The utility model provides a kind of AMOLED display device.Anode layer in the pixel region of the AMOLED display device includes the first anode,And located at the first anode periphery and with the second plate at first anode interval,The first anode,And second plate forms the first sub- OLED and the second sub- OLED with the OLED functional layers above it and negative electrode respectively,Corresponding each pixel region is provided with a pixel-driving circuit simultaneously,The pixel-driving circuit is connected with the first anode and second plate respectively,During work,Pixel-driving circuit is passed through the first electric current and the second electric current differed to the first anode and second plate respectively,By the size of current for controlling the first electric current and the second electric current,The brightness that the first sub- OLED can be made to be sent with the second sub- OLED is consistent,Solve the problems, such as due to the OLED functional layers caused pixel intensity inequality in uneven thickness when OLED functional layers are made by the way of printing,Improve the quality of display.
Description
Technical field
It the utility model is related to display technology field, more particularly to a kind of AMOLED display device.
Background technology
Organic LED display device (Organic Light Emitting Display, OLED) has spontaneous
Light, driving voltage are low, luminous efficiency is high, the response time is short, definition and contrast are high, nearly 180 ° of visual angles, use temperature ranges
Width, many advantages, such as Flexible Displays are with large area total colouring can be achieved, it is the display for most having development potentiality to be known as by industry
Device.
OLED according to type of drive can be divided into passive matrix OLED (Passive Matrix OLED, PMOLED) and
Active array type OLED (Active Matrix OLED, AMOLED) two major classes, i.e. direct addressin and thin film transistor (TFT) (TFT) square
Battle array two classes of addressing.Wherein, AMOLED has the pixel in array arrangement, belongs to active display type, luminous efficacy is high, generally
Large scale display device as fine definition.
AMOLED is current driving apparatus, when there is electric current to flow through Organic Light Emitting Diode, organic light-emitting diode,
And luminosity is determined by the electric current for flowing through Organic Light Emitting Diode itself.Most of existing integrated circuit (Integrated
Circuit, IC) voltage signal is all only transmitted, therefore AMOLED pixel-driving circuit needs to complete voltage signal being changed into electricity
Flow the task of signal.Traditional AMOLED pixel-driving circuits are usually 2T1C, i.e. two thin film transistor (TFT)s add electric capacity
Structure, it is electric current by voltage transformation.
Existing AMOLED display device makes a plurality of pixel isolation dam on the planarization layer typically on tft array substrate
(Bank) multiple pixel regions, are limited on tft array substrate by a plurality of pixel isolation dam, afterwards using printing by the way of
OLED functional layers are made in multiple pixel regions, are specially dripped to the OLED material of solution state in multiple pixel regions, afterwards
OLED material is dried, obtains OLED functional layers.Because the organic material that pixel isolation dam uses typically has hydrophily
Or hydrophobicity, when making pixel isolation dam using hydrophilic material, the OLED functional layers made by the way of printing are in picture
The thickness of plain regional center is less than the thickness in pixel edges, when making pixel isolation dam using hydrophobic material,
Thickness of the OLED functional layers made by the way of printing at pixel region center is greater than the thickness in pixel edges,
Namely the thickness of OLED functional layers is uneven, when driving AMOLED display device is shown on this basis, electric current is flowing through thickness
After spending uneven OLED functional layers, the brightness that same pixel region is sent is uneven, influences display quality.
Utility model content
The purpose of this utility model is to provide a kind of AMOLED display device, luminous in each pixel region during display
Brightness uniformity, display quality are high.
To achieve the above object, the utility model provides a kind of AMOLED display device, including：TFT substrate, located at TFT
A plurality of pixel isolation dam on substrate, multiple OLED functional layers in TFT substrate and in multiple OLED functional layers
Negative electrode；The a plurality of pixel isolation dam limits multiple pixel regions on the tft substrate, and multiple OLED functional layers are respectively positioned at more
In individual pixel region；
The TFT substrate include underlay substrate, the tft array layer on underlay substrate and on tft array layer and
Corresponding multiple anode layers in multiple pixel regions；
Each anode layer includes：Positioned at the first anode at the center of corresponding pixel region and located at first anode week
Enclose and with the second plate at first anode interval；The first anode forms the first son with the OLED functional layers above it and negative electrode
OLED, second plate form the second sub- OLED with the OLED functional layers above it and negative electrode；
The AMOLED display device corresponds to each pixel region and is provided with a pixel-driving circuit, the pixel-driving circuit
It is electrically connected with respectively with the first anode and second plate.
Alternatively, the material on the pixel isolation dam is hydrophilic material, and the OLED functional layers are corresponding with the first anode
Part thickness be less than part corresponding with second plate thickness.
Alternatively, the material on the pixel isolation dam is hydrophobic material, and the OLED functional layers are corresponding with the first anode
Part thickness be more than part corresponding with second plate thickness.
Each pixel-driving circuit includes first film transistor, the second thin film transistor (TFT), the 3rd thin film transistor (TFT), the
Four film crystals, the first electric capacity, the second electric capacity；
The first film transistor, the second thin film transistor (TFT), the 3rd thin film transistor (TFT), the 4th film crystal, the first electricity
Hold, the second electric capacity is respectively positioned in tft array layer；The grid access scanning signal of the first film transistor, source electrode access the
One data-signal, drain electrode are electrically connected with the grid of the second thin film transistor (TFT)；The drain electrode access power supply of second thin film transistor (TFT)
Positive voltage, source electrode are electrically connected with the first anode in respective pixel region；The grid of 3rd thin film transistor (TFT) is electrically connected with
The grid of first film transistor, source electrode access the second data-signal, and drain electrode is electrically connected with the grid of the 4th thin film transistor (TFT)；Institute
The drain electrode access power supply positive voltage of the 4th thin film transistor (TFT) is stated, source electrode is electrically connected with the second plate in respective pixel region；Institute
Grid and the drain electrode of the second thin film transistor (TFT) is electrically connected in the both ends for stating the first electric capacity；The both ends difference of second electric capacity
It is electrically connected with grid and the drain electrode of the 4th thin film transistor (TFT)；
The negative electrode accesses power supply negative voltage.
The TFT substrate is also included located at the planarization layer between anode layer and tft array layer.
The thickness that the region of the first anode is corresponded on the planarization layer is less than the thickness in the region for corresponding to second plate.
The beneficial effects of the utility model：A kind of AMOLED display device provided by the utility model, in pixel region
Anode layer include the first anode and located at first anode periphery and with the second plate at first anode interval, the first anode and the
Two anodes form the first sub- OLED and the second sub- OLED, while corresponding each picture with the OLED functional layers above it and negative electrode respectively
Plain region is provided with a pixel-driving circuit, and the pixel-driving circuit is connected with the first anode and second plate respectively, during work, as
Plain drive circuit is passed through the electric current differed to the first anode and second plate respectively, by the size of control electric current, can make
First sub- OLED is consistent with the brightness that the second sub- OLED is sent, and solves due to making OLED functional layers by the way of printing
When OLED functional layers it is in uneven thickness caused by pixel intensity inequality the problem of, improve the quality of display.
Brief description of the drawings
In order to be further understood that feature of the present utility model and technology contents, refer to new below in connection with this practicality
The detailed description of type and accompanying drawing, but accompanying drawing is only provided and used with reference to explanation, is not used for being any limitation as the utility model.
In accompanying drawing,
Fig. 1 is the structural representation of the first embodiment of AMOLED display device of the present utility model；
Fig. 2 is the pixel-driving circuit and the first sub- OLED and the second sub- OLED of AMOLED display device of the present utility model
The circuit diagram of connection；
Fig. 3 is the structural representation of the second embodiment of AMOLED display device of the present utility model；
Fig. 4 is the structural representation of the 3rd embodiment of AMOLED display device of the present utility model.
Embodiment
The technological means and its effect taken for further elaboration the utility model, below in conjunction with of the present utility model
Preferred embodiment and its accompanying drawing are described in detail.
The utility model provides a kind of AMOLED display device, refers to Fig. 1 and Fig. 2, is AMOLED of the present utility model
The first embodiment of display device, AMOLED display device of the present utility model include：TFT substrate 100, located at TFT substrate 100
On a plurality of pixel isolation dam 200, multiple OLED functional layers 300 in TFT substrate 100 and located at multiple OLED functions
Negative electrode 400 on layer 300；The a plurality of pixel isolation dam 200 limits multiple pixel regions 101 in TFT substrate 100, more
Individual OLED functional layers 300 are respectively in multiple pixel regions 101；
The TFT substrate 100 includes underlay substrate 110, the tft array layer 120 on underlay substrate 110 and is located at
On tft array layer 120 and correspondingly multiple anode layers 130 in multiple pixel regions 101；
Each anode layer 130 includes：Positioned at the first anode 131 at the center of corresponding pixel region 101 and located at
The second plate 132 being spaced around one anode 131 and with the first anode 131；The first anode 131 and the OLED functional layers above it
300 and negative electrode 400 form the first sub- OLED D1, second plate 132 forms with the OLED functional layers 300 above it and negative electrode 400
Second sub- OLED D2；
The AMOLED display device corresponds to each pixel region 101 and is provided with a pixel-driving circuit 10, and the pixel is driven
Dynamic circuit 10 is electrically connected with the first anode 131 and second plate 132 respectively, and the pixel-driving circuit 10 is used in AMOLED
When display device is shown, the first electric current and the second electric current, driving first are passed through to the first anode 131 and second plate 132 respectively
Sub- OLED D1 and the 2nd OLED D2 light, and make the first sub- OLED D1 consistent with the 2nd OLED D2 luminosity.
Specifically, the OLED functional layers 300 include hole injection layer, the hole transport being cascading from the bottom to top
Layer, luminescent layer, electron transfer layer and electron injecting layer.The OLED functional layers 300 are produced on pixel region by the way of printing
In domain 101.
It should be noted that because pixel isolation dam 200 has hydrophily or hydrophobicity, it is located at OLED functional layers 300
The thickness of the part at the center of pixel region 101 is different from the thickness positioned at the part at the edge of pixel region 101, therefore, this
The anode layer 130 of corresponding each pixel region 101 is arranged to include first positioned at the center of pixel region 101 by utility model
Anode 131 and located at the periphery of the first anode 131 and the second plate 132 being spaced with the first anode 131, the first anode 131 and
Second plate 132 forms the first sub- sub- OLED of OLED D1 and second with the OLED functional layers 300 above it and negative electrode 400 respectively
D2, while corresponding each pixel region 101 is provided with a pixel-driving circuit 10, the pixel-driving circuit 10 respectively with the first anode
131 and second plate 132 connect, during work, pixel-driving circuit 10 is passed through to the first anode 131 and second plate 132 respectively
The first electric current and the second electric current differed, by controlling the size of current of the first electric current and the second electric current, the first son can be made
OLED D1 are consistent with the brightness that the second sub- OLED D2 are sent, although namely OLED functional layers 300 at the center of pixel region 101
Different with edge thickness, luminosity of the AMOLED display device in each pixel region 101 can also keep uniform, solve
Due to when OLED functional layers 300 are made by the way of printing OLED functional layers 300 it is in uneven thickness caused by pixel intensity not
The problem of equal, improve the quality of display.
Specifically, the material of the underlay substrate 110 is glass.
Specifically, referring to Fig. 1, the TFT substrate 100 also includes being located between anode layer 130 and tft array layer 120
Planarization layer 140, the multiple pixel isolation dam 200 is arranged on planarization layer 140.Specifically, in the utility model
First embodiment in, the surface of the planarization layer 140 is flat.
Specifically, the negative electrode 400 can whole face cover multiple OLED functional layers 300 and multiple pixel isolation dams 200, also may be used
First embodiment of the present utility model as shown in Figure 1, is correspondingly arranged in multiple OLED functional layers 300, this is not interfered with
Realization of the present utility model.
Specifically, referring to Fig. 1, in first embodiment of the present utility model, the material on the pixel isolation dam 200 is
Hydrophilic material, therefore completed by the way of printing after OLED functional layers 300, the OLED functional layers 300 with
The thickness of part corresponding to the first anode 131 is less than the thickness with 132 corresponding part of second plate；Accordingly, in AMOLED
When display device is shown, the pixel-driving circuit 10 is less than to the second sun to first electric current that the first anode 131 is passed through
The second electric current that pole 132 is passed through, so that the first sub- OLED D1 are identical with the brightness that the second sub- OLED D2 light.
Specifically, referring to Fig. 2, each pixel-driving circuit 10 includes first film transistor T1, the second film crystalline substance
Body pipe T2, the 3rd thin film transistor (TFT) T3, the 4th film crystal T4, the first electric capacity C1, the second electric capacity C2；
Wherein, the first film transistor T1, the second thin film transistor (TFT) T2, the 3rd thin film transistor (TFT) T3, the 4th film
Crystal T4, the first electric capacity C1, the second electric capacity C2 are respectively positioned in tft array layer 120；The grid of the first film transistor T1 connects
Enter scanning signal scan, source electrode accesses the first data-signal data1, and drain electrode is electrically connected with the second thin film transistor (TFT) T2 grid；
The drain electrode access power supply positive voltage OVDD of the second thin film transistor (TFT) T2, source electrode are electrically connected with respective pixel region 101
The first anode 131；The grid of the 3rd thin film transistor (TFT) T3 is electrically connected with first film transistor T1 grid, source electrode access
Second data-signal data2, drain electrode are electrically connected with the 4th thin film transistor (TFT) T4 grid；The leakage of the 4th thin film transistor (TFT) T4
Power supply positive voltage OVDD is accessed in pole, and source electrode is electrically connected with the second plate 132 in respective pixel region 101；First electric capacity
The second thin film transistor (TFT) T2 grid and drain electrode is electrically connected in C1 both ends；The both ends difference of the second electric capacity C2 is electrical
Connect the 4th thin film transistor (TFT) T4 grid and drain electrode；The negative electrode 400 accesses power supply negative voltage OVSS；Show and fill in AMOLED
Put when being shown, scanning signal Scan control first film transistor T1 and the 3rd thin film transistor (TFT) T3 conductings, described first
Data-signal data1 and the second data-signal data2 are respectively written into the second thin film transistor (TFT) T2's and the 4th thin film transistor (TFT) T4
Grid, by controlling the first data-signal data1 and the second data-signal data2 magnitude of voltage, it just can adjust pixel driver electricity
Road 10 produces the current value of the first electric current and the second electric current, and then the first electric current and the second electric current are each led into the first anode
131 and second plate 132, the first sub- sub- OLED D2 of OLED D1 and second of driving send the consistent light of brightness.
Specifically, referring to Fig. 3, second embodiment for AMOLED display device of the present utility model, the embodiment with
The difference of above-mentioned first embodiment is, the thickness in region of the first anode 131 is corresponded on the planarization layer 140 less than corresponding
The thickness in the region of second plate 132, thus OLED functional layers 300 the part at the center of pixel region 101 with pixel region
The thickness difference of the marginal portion of domain 101 reduces due to the segment difference of planarization layer 140, therefore, it is possible to mitigate due to using printing
The degree in uneven thickness of OLED functional layers 300 when mode makes OLED functional layers 300, it is thus possible to reduce the first electric current and
Difference between current between two electric currents, is easy to practical application.Remaining feature is identical with first embodiment, will not be repeated here.
Specifically, referring to Fig. 4,3rd embodiment for AMOLED display device of the present utility model, the embodiment with
The difference of above-mentioned first embodiment is that the material on the pixel isolation dam 200 is hydrophobic material, therefore using printing
Mode completes after OLED functional layers 300, the thickness of the OLED functional layers 300 and 131 corresponding part of the first anode
More than the thickness with 132 corresponding part of second plate；Accordingly, when AMOLED display device is shown, the pixel driver
Circuit 10 is more than the second electric current being passed through to second plate 132 to first electric current that the first anode 131 is passed through, so that first
Sub- OLED D1 are identical with the brightness that the second sub- OLED D2 light.Remaining is identical with first embodiment, will not be repeated here.
It is noted that on the basis of 3rd embodiment of the present utility model, can be by planarization 140 corresponding first
The thickness in the region of anode 131 is set greater than the thickness in the region of corresponding second plate 132, to mitigate due to using printing
The degree in uneven thickness of OLED functional layers 300 when mode makes OLED functional layers 300, it is thus possible to reduce the first electric current and
Difference between current between two electric currents, is easy to practical application.
In summary, AMOLED display device of the present utility model, the anode layer in pixel region include the first anode and
Located at first anode periphery and with the second plate at first anode interval, the first anode and second plate respectively with above it
OLED functional layers and negative electrode form the first sub- OLED and the second sub- OLED, while corresponding each pixel region is provided with a pixel driver
Circuit, the pixel-driving circuit are connected with the first anode and second plate respectively, and during work, pixel-driving circuit is respectively to first
Anode and second plate are passed through the electric current differed, by the size of control electric current, can make of the first sub- OLED and second
The brightness that OLED is sent is consistent, solves because OLED functional layers thickness is not when OLED functional layers are made by the way of printing
Caused by uniformly the problem of pixel intensity inequality, the quality of display is improved.
It is described above, for the person of ordinary skill of the art, can according to the technical solution of the utility model and
Technical concept makes other various corresponding changes and deformation, and all these changes and deformation should all belong to the utility model power
The protection domain that profit requires.
Claims (6)
- A kind of 1. AMOLED display device, it is characterised in that including：It is TFT substrate (100), more in TFT substrate (100) Bar pixel isolation dam (200), multiple OLED functional layers (300) in TFT substrate (100) and located at multiple OLED functions Negative electrode (400) on layer (300)；The a plurality of pixel isolation dam (200) limits multiple pixel regions in TFT substrate (100) Domain (101), multiple OLED functional layers (300) are respectively in multiple pixel regions (101)；The TFT substrate (100) include underlay substrate (110), the tft array layer (120) on underlay substrate (110) and On tft array layer (120) and correspondingly multiple anode layers (130) in multiple pixel regions (101)；Each anode layer (130) includes：Positioned at the center of corresponding pixel region (101) the first anode (131) and be located at The second plate (132) being spaced around the first anode (131) and with the first anode (131)；The first anode (131) with its above OLED functional layers (300) and negative electrode (400) form the first sub- OLED (D1), second plate (132) and the OLED functions above it Layer (300) and negative electrode (400) form the second sub- OLED (D2)；The AMOLED display device corresponds to each pixel region (101) and is provided with a pixel-driving circuit (10), and the pixel is driven Dynamic circuit (10) is electrically connected with the first anode (131) and second plate (132) respectively.
- 2. AMOLED display device as claimed in claim 1, it is characterised in that the material of the pixel isolation dam (200) is Hydrophilic material, the thickness of the OLED functional layers (300) part corresponding with the first anode (131) is less than and second plate (132) thickness of part corresponding to.
- 3. AMOLED display device as claimed in claim 1, it is characterised in that the material of the pixel isolation dam (200) is Hydrophobic material, the thickness of the OLED functional layers (300) part corresponding with the first anode (131) is more than and second plate (132) thickness of part corresponding to.
- 4. AMOLED display device as claimed in claim 1, it is characterised in that each pixel-driving circuit (10) includes the One thin film transistor (TFT) (T1), the second thin film transistor (TFT) (T2), the 3rd thin film transistor (TFT) (T3), the 4th film crystal (T4), first Electric capacity (C1), the second electric capacity (C2)；The first film transistor (T1), the second thin film transistor (TFT) (T2), the 3rd thin film transistor (TFT) (T3), the 4th film crystal (T4), the first electric capacity (C1), the second electric capacity (C2) are respectively positioned in tft array layer (120)；The first film transistor (T1) Grid access scanning signal (scan), source electrode access the first data-signal (data1), and drain electrode is electrically connected with the second thin film transistor (TFT) (T2) grid；The drain electrode access power supply positive voltage (OVDD) of second thin film transistor (TFT) (T2), source electrode are electrically connected with corresponding The first anode (131) in pixel region (101)；It is brilliant that the grid of 3rd thin film transistor (TFT) (T3) is electrically connected with the first film The grid of body pipe (T1), source electrode access the second data-signal (data2), and drain electrode is electrically connected with the grid of the 4th thin film transistor (TFT) (T4) Pole；The drain electrode access power supply positive voltage (OVDD) of 4th thin film transistor (TFT) (T4), source electrode are electrically connected with respective pixel region (101) second plate (132) in；The second thin film transistor (TFT) (T2) is electrically connected in the both ends of first electric capacity (C1) Grid and drain electrode；Grid and the drain electrode of the 4th thin film transistor (TFT) (T4) is electrically connected in the both ends of second electric capacity (C2)；Negative electrode (400) the access power supply negative voltage (OVSS).
- 5. AMOLED display device as claimed in claim 3, it is characterised in that the TFT substrate (100) is also included located at sun Planarization layer (140) between pole layer (130) and tft array layer (120).
- 6. AMOLED display device as claimed in claim 5, it is characterised in that corresponding first on the planarization layer (140) The thickness in the region of anode (131) is less than the thickness in the region of corresponding second plate (132).
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| CN201721294531.1U CN206947383U (en) | 2017-10-09 | 2017-10-09 | Amoled display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721294531.1U CN206947383U (en) | 2017-10-09 | 2017-10-09 | Amoled display device |
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| CN206947383U true CN206947383U (en) | 2018-01-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019071726A1 (en) * | 2017-10-09 | 2019-04-18 | 深圳市华星光电半导体显示技术有限公司 | Amoled display device and driving method therefor |
| WO2019161583A1 (en) * | 2018-02-24 | 2019-08-29 | 武汉华星光电半导体显示技术有限公司 | Method for improving uneven display brightness of amoled panel, and amoled panel |
| CN110890066A (en) * | 2019-11-26 | 2020-03-17 | 深圳市华星光电半导体显示技术有限公司 | Sub-pixel circuit, pixel circuit and display device |
| US10803798B2 (en) | 2018-02-24 | 2020-10-13 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | AMOLED panel and method for reducing display luminance unevenness thereof |
-
2017
- 2017-10-09 CN CN201721294531.1U patent/CN206947383U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019071726A1 (en) * | 2017-10-09 | 2019-04-18 | 深圳市华星光电半导体显示技术有限公司 | Amoled display device and driving method therefor |
| US10643530B2 (en) | 2017-10-09 | 2020-05-05 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Amoled display device and driving method thereof |
| WO2019161583A1 (en) * | 2018-02-24 | 2019-08-29 | 武汉华星光电半导体显示技术有限公司 | Method for improving uneven display brightness of amoled panel, and amoled panel |
| US10803798B2 (en) | 2018-02-24 | 2020-10-13 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | AMOLED panel and method for reducing display luminance unevenness thereof |
| CN110890066A (en) * | 2019-11-26 | 2020-03-17 | 深圳市华星光电半导体显示技术有限公司 | Sub-pixel circuit, pixel circuit and display device |
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