CN105702701B - Piezoelectricity touch control organic light-emitting display panel and manufacturing method, organic light emitting display - Google Patents
Piezoelectricity touch control organic light-emitting display panel and manufacturing method, organic light emitting display Download PDFInfo
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Abstract
The present invention relates to a kind of piezoelectricity touch control organic light-emitting display panel and its manufacturing methods and organic light emitting display, wherein piezoelectricity touch control organic light-emitting display panel includes：The OLED backboards and encapsulation cover plate for being oppositely arranged and being bonded to each other；Wherein, the encapsulation cover plate includes second substrate and touch-control structure, and the touch-control structure is set to the second substrate backwards to the side of the OLED backboards.In piezoelectricity touch control organic light-emitting display panel provided by the invention and its manufacturing method and organic light emitting display, by the way that piezoelectric type touch screen and oled panel are integrated, not only greatly reduce the weight and thickness of display itself, cost of manufacture is saved, and since touch-control structure is formed in side of the encapsulation cover plate far from OLED backboards, signal interference problem can be avoided.
Description
Technical field
The present invention relates to technical field of flat panel display, more particularly to a kind of piezoelectricity touch control organic light-emitting display panel and its
Manufacturing method and organic light emitting display.
Background technology
With the high speed development of science and technology, electronic product has occurred that snafu variation, with touch control e
The appearance of class product, touch-control product are more and more pursued by people, can not only be saved space, are convenient for carrying,
And user can directly be operated by finger or stylus etc., and it is very convenient using comfortable.For example, existing market is common
Personal digital assistant (PDA), touch-control class mobile phone, portable notebook computer etc., all increased the input to touch technology,
It is more widely applied so touch-control device must have in the future in every field.
Currently, being emerged one after another based on touch screen made of the characteristics such as resistance, capacitance, piezoelectricity.Wherein, piezoelectric type touch screen is
Piezoelectric effect based on piezoelectric ceramics, therefore the object of any material or any shape no matter is used to apply active force to touch screen,
Touch screen can be made and timely respond to, and unlike traditional capacitive touch screen or resistive touch screen, it is desirable that it touches
It must be non-insulator (electric conductor) or tip and hard object body to touch object.Piezoelectric type touch screen is not only for the material and shape of contact object
Shape does not have particular/special requirement, and can highly precisely perceive the position of contact.Therefore, the application of piezoelectric type touch screen is the widest
It is general.
The display of organic light emitting display (full name in English is Organic Light-Emitting Diode, abbreviation OLED)
(full name in English is Thin Film Transistor Liquid to mode with traditional thin film field effect transistor liquid crystal display
Crystal Display, abbreviation TFT-LCD) display mode it is different, the display panel of OLED uses very thin organic material
Coating, when have electric current by when coating of organic material will shine.OLED oneself can shine, unlike TFT-LCD needs backlight,
Therefore visibility and the equal higher of brightness, and voltage requirements are low and efficient, in addition reaction is fast, light-weight, thickness is thin, construction letter
Singly, the advantages that at low cost, one of the product of 21st century most future is had been considered as.
The combination of touch technology and OLED technology is a kind of trend of the following display technology development, the organic hair of piezoelectricity touch
Optical display unit combines the advantages of piezoelectric type touch screen and organic light emitting display, even more current display technology focus of attention.
Existing piezoelectricity touch-controllable organic luminescent display generally includes organic light-emitting display device and touch screen (full name in English Touch
Pannel, abbreviation TP), what the organic light-emitting display device and touch screen were assembled again after usually making respectively.This
Can undoubtedly increase the weight and thickness of display, and with the advantage of organic light emitting display itself it is light, thin run counter to.
In order to reduce the weight and thickness of display, generally use In-cell touch panel at present, i.e., by piezoelectric type touch screen
Touch control electrode be embedded in the inside of display screen.In this way, the thickness of monitor overall can be reduced, and reduce cost of manufacture.So
And since the touch control electrode of In-cell touch panel is very close to the TFT cablings of organic light-emitting display device, it be easy to cause letter
Number interference.
Base this, how to solve that existing piezoelectricity touch-controllable organic luminescent display is not frivolous enough or presence signal interference asked
Topic has become those skilled in the art's technical problem urgently to be resolved hurrily.
Invention content
The purpose of the present invention is to provide a kind of piezoelectricity touch control organic light-emitting display panel and its manufacturing methods and organic
Active display, to solve that piezoelectricity touch-controllable organic luminescent display is not frivolous enough in the prior art or presence signal interference is asked
Topic.
To solve the above problems, the present invention provides a kind of piezoelectricity touch control organic light-emitting display panel, the piezoelectricity touch-control
Formula organic light emitting display panel includes：The OLED backboards and encapsulation cover plate for being oppositely arranged and being bonded to each other；Wherein, the cap
Plate includes second substrate and touch-control structure, and the touch-control structure is set to the second substrate backwards to the one of the OLED backboards
Side.
Optionally, in the piezoelectricity touch control organic light-emitting display panel, the touch-control structure includes：
The first electrode being formed on the second substrate；
The first medium layer being formed on the first electrode and the unlapped second substrate of the first electrode, it is described
Multiple through-holes are provided in first medium layer；
The piezoelectric material layer being formed on the first medium layer, the piezoelectric material layer pass through the multiple through-hole and institute
State first electrode connection；
The second electrode being formed on the piezoelectric material layer；And
It is formed on the second electrode and the unlapped piezoelectric material layer of the second electrode and first medium layer
Second dielectric layer.
Optionally, in the piezoelectricity touch control organic light-emitting display panel, institute is completely covered in the piezoelectric material layer
State the first electrode that through-hole is exposed.
Optionally, in the piezoelectricity touch control organic light-emitting display panel, the first electrode and second electrode are equal
In array distribution, and it is transparent electrode；The array distribution of the array distribution figure and the second electrode of the first electrode
Figure is identical.
Optionally, in the piezoelectricity touch control organic light-emitting display panel, the OLED backboards include first substrate,
The TFT routing layers being formed on the first substrate and the OLED luminescent layers being formed on the TFT routing layers.
Correspondingly, the present invention also provides a kind of organic light emitting display, the organic light emitting display includes institute as above
The piezoelectricity touch control organic light-emitting display panel stated.
Correspondingly, the present invention also provides a kind of manufacturing method of piezoelectricity touch control organic light-emitting display panel, the pressure
The manufacturing method of electric touch control organic light-emitting display panel includes：
Second substrate is provided；
The first conductive layer is formed in the side of the second substrate, and graphical first conductive layer is to form the first electricity
Pole；
First medium layer is formed in the first electrode and the unlapped second substrate of the first electrode, and is etched
The first medium layer is to form multiple through-holes for exposing the first electrode；
Piezoelectric material layer is formed in the first electrode that the multiple through-hole exposes；
The second conductive layer is formed on the piezoelectric material layer, and graphical second conductive layer is to form the second electricity
Pole；
Is formed in the second electrode and the unlapped piezoelectric material layer of the second electrode and first medium layer
Second medium layer；And
OLED backboards are provided and the other side of the OLED backboards and the second substrate fits.
Optionally, in the manufacturing method of the piezoelectricity touch control organic light-emitting display panel, the piezoelectric material layer
The first electrode that the through-hole is exposed is completely covered.
Optionally, in the manufacturing method of the piezoelectricity touch control organic light-emitting display panel, first conductive layer
It is all made of transparent conductive material with the second conductive layer, the first electrode and second electrode share same mask plate and formed.
In conclusion in piezoelectricity touch control organic light-emitting display panel provided by the invention and its manufacturing method and organic hair
In optical display unit, by the way that piezoelectric type touch screen and oled panel are integrated, the weight of display itself is not only greatly reduced
Amount and thickness, have saved cost of manufacture, and since touch-control structure is formed in side of the encapsulation cover plate far from OLED backboards,
Therefore signal interference problem can be avoided.
Description of the drawings
Fig. 1 is the structural schematic diagram of the piezoelectricity touch control organic light-emitting display panel of the embodiment of the present invention；
Fig. 2 is the flow chart of the manufacturing method of the piezoelectricity touch control organic light-emitting display panel of the embodiment of the present invention.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments to the present invention propose a kind of piezoelectricity touch control organic light-emitting display panel and
Its manufacturing method and organic light emitting display are described in further detail.It is of the invention according to following explanation and claims
Advantages and features will become apparent from.It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio, only
To purpose that is convenient, lucidly aiding in illustrating the embodiment of the present invention.
Referring to FIG. 1, its structural schematic diagram for the piezoelectricity touch control organic light-emitting display panel of the embodiment of the present invention.Such as
Shown in Fig. 1, the piezoelectricity touch control organic light-emitting display panel 100 includes：The OLED backboards 10 for being oppositely arranged and being bonded to each other
With encapsulation cover plate 20；Wherein, the encapsulation cover plate 20 includes second substrate 21 and touch-control structure, and the touch-control structure is set to institute
State side of the second substrate 21 backwards to the OLED backboards 10.
Specifically, the OLED backboards 10 include first substrate 11, the TFT routing layers being formed on the first substrate 11
12 and the OLED luminescent layers 13 that are formed on the TFT routing layers 12, wherein the generally transparent glass of the first substrate 11
Substrate, TFT routing layers 12 include thin film transistor (TFT) array, provide the data line of data-signal and provide the grid of scanning signal
Line, the data line and grid line are connected with the thin film transistor (TFT) array (not shown) respectively, the OLED luminescent layers
13 include multiple organic electroluminescent LEDs (OLED).
The encapsulation cover plate 20 includes second substrate 21 and the touch-control structure being formed on the second substrate 21, described to touch
Control structure is located at side of the second substrate 21 backwards to the OLED backboards 10, wherein the second substrate 21 is usually saturating
Bright glass substrate.
With continued reference to FIG. 1, the touch-control structure includes the first electrode 22 being formed on the second substrate 21；It is formed
First medium layer 23 in the first electrode 22 and the unlapped second substrate of the first electrode 21, described first is situated between
Multiple through-holes are provided in matter layer 23；The piezoelectric material layer 24 being formed on the first medium layer 23, the piezoelectric material layer
24 are connect by the multiple through-hole with the first electrode 22；The second electrode 25 being formed on the piezoelectric material layer 24；
It is formed on the second electrode 25 and 25 unlapped piezoelectric material layer 24 of the second electrode and first medium layer 23
Second dielectric layer 26.
Wherein, the first electrode 22 and second electrode 25 are realized by the piezoelectric material layer 24 is electrically connected, described
Piezoelectric material layer 24 generates voltage when being under pressure effect in thickness direction, and the voltage is to the first electrode 22 and the second electricity
The charge signal of pole 25 has an impact.When applying active force to the touch-control structure, the piezoelectric material layer 24 is by because of pressure
And voltage is generated, and then influence the charge signal of the first electrode 22 and second electrode 25.By detecting the charge signal
The position of generation and size can accurately perceive contact position and amount of force.
With continued reference to FIG. 1, the encapsulation cover plate 20 is oppositely arranged and is bonded to each other with the OLED backboards 10, it is described
TFT routing layer 11 of the OLED luminescent layers 13 in the second substrate 21, the OLED backboards 10 in OLED backboards 10 is remote
From the second substrate 21.Due to being not only provided with OLED luminescent layers 13 between the TFT routing layers 12 and the touch-control structure,
And it is additionally provided with encapsulation cover plate 20, therefore the data of the touch-control structure and the TFT routing layers 12 can be effectively prevented from
Line and grid line interfere with each other.
Piezoelectric type touch screen and oled panel are combined by the piezoelectricity touch control organic light-emitting display panel 100 to be integrated,
The weight and thickness for assembling after need not making touch screen and oled panel respectively, therefore greatly reducing display itself, and
And cost of manufacture is saved.
The present invention also provides a kind of organic light emitting display, the organic light emitting display includes piezoelectricity as described above
Touch control organic light-emitting display panel 100.
Correspondingly, the present embodiment additionally provides a kind of manufacturing method of piezoelectricity touch control organic light-emitting display panel.It please tie
It closes with reference to figure 1 and Fig. 2, the manufacturing method of the piezoelectricity touch control organic light-emitting display panel includes the following steps：
S10：Second substrate 21 is provided；
S11：First electrode 22 is formed in the side of the second substrate 21；
S12：First is formed on 22 unlapped second substrate 21 of the first electrode 22 and the first electrode to be situated between
Matter layer 23, and the first medium layer 23 is etched to form multiple through-holes for exposing the first electrode 22；
S13：Piezoelectric material layer 24 is formed in the first electrode 22 that the multiple through-hole exposes；
S14：Second electrode 25 is formed on the piezoelectric material layer 24；
S15：In the second electrode 25 and 25 unlapped piezoelectric material layer 24 of the second electrode and first medium
Second dielectric layer 26 is formed on layer 23；
S16：OLED backboards 10 are provided and the OLED backboards 10 and the other side of the second substrate 21 fit.
Specifically, first, providing second substrate 21,21 generally transparent glass substrate of the second substrate.
Then, the first conductive layer is formed on the surface of the second substrate 21, and using described in mask pattern the
One conductive layer is to form first electrode 22.As shown in Figure 1, the first electrode is located at the side of the second substrate, described
One electrode 22 is in the array distribution of m1 × n1, wherein m1 is the columns of first electrode 22, and n1 is the line number of first electrode 22, m1
>=2, n1 >=2.
It is formed after first electrode 22, in the first electrode 22 and the unlapped second substrate of the first electrode 21
The first electrode 22 is completely covered in upper formation first medium layer 23, the first medium layer 23.
Later, the first medium layer 23 is performed etching and exposes described the to be formed in the first medium layer 23
Multiple through-holes of one electrode 22.
Then, piezoelectric material layer 24, the piezoelectric material are formed in the first electrode 22 that the multiple through-hole exposes
24 the first electrode 22 is completely covered in layer, occurs with the second electrode 25 being subsequently formed to avoid the first electrode 22 short
Road.
It is formed after piezoelectric material layer 24, forms the second conductive layer on the piezoelectric material layer 24, and graphical described
Second conductive layer is to form second electrode 25.The second electrode 25 is in the array distribution of m2 × n2, wherein m2 is second electrode
25 columns, n2 are the line number of second electrode 25, m2 >=2, n2 >=2.
In the present embodiment, first conductive layer and the second conductive layer are transparency conducting layer, such as the oxidation of indium tin metal
Object (Indium Tin Oxides, abbreviation ITO).It can be seen from the above, the first electrode 22 is with the second electrode 25
Prescribed electrode.
In the present embodiment, the first electrode 22 shares same mask plate with the second electrode 25.By graphical institute
The mask plate and the mask plate of the second conductive layer use described in eye diagram for stating the use of the first conductive layer are same mask plates,
Therefore the array distribution figure of the first electrode 22 is identical as the array distribution figure of the second electrode 25.As shown in Figure 1,
Along the first substrate 11 to the direction of second substrate 21, the projection of the first electrode 22 and second electrode 25 is completely heavy
It closes.
Wherein, the line width and density of the first electrode 22 and second electrode 25 can be made according to the sensitivity level of touch
It is fixed.Sensitivity requirement is higher, and line width is smaller and density is bigger.Sensitivity requirement is lower, and line width is bigger and density is smaller.
Hereafter, in the second electrode 25 and 25 unlapped piezoelectric material layer 24 of the second electrode and first medium
Second dielectric layer 26 is formed on layer 23.
So far, encapsulation cover plate 20 is formd, the encapsulation cover plate 20 includes second substrate 21 and is formed in second base
Touch-control structure on plate 21, the touch-control structure include first electrode 22, the second electrode being formed on the second substrate 21
25 and piezoelectric material layer 24, wherein the piezoelectric material layer 24 is between the first electrode 22 and second electrode 25.
Then, OLED backboards 10 are provided.The OLED backboards 10 include transparent first substrate 11, are formed in first base
TFT routing layers 12 on plate 11 and the OLED luminescent layers 13 being formed on the TFT routing layers 12, the TFT routing layers 12
The data line and grid line being connected including thin film transistor (TFT) array and with the thin film transistor (TFT) array, the OLED luminescent layers
13 include multiple organic electroluminescent LEDs (OLED).
Finally, the OLED backboards 10 are placed on the surface that touch-control structure is not arranged for the second substrate 21, make its with
The encapsulation cover plate 20 is oppositely arranged and is bonded to each other.When placing the OLED backboards 10, the OLED luminescent layers 13 are close to institute
Second substrate 21 is stated, the TFT routing layers 11 are far from the second substrate 21.
So far, the piezoelectricity touch control organic light-emitting display panel 100 is formd.The piezoelectricity touch control organic light-emitting is aobvious
Show that panel 100 increases touch-control structure, the touch-control knot on the basis of traditional organic light emitting display panel (oled panel)
Structure is set to side of the encapsulation cover plate 20 far from OLED backboards 10.The touch-control structure not only with organic light emitting display
Second substrate 21 is shared, and since far from TFT routing layers 12, the data line with the TFT routing layers 12 can be avoided
It is interfered with each other with grid line.
To sum up, piezoelectricity touch control organic light-emitting display panel provided by the invention and its manufacturing method and organic light emitting display
In devices, piezoelectric type touch screen and oled panel making are integrated, the weight and thickness of display itself are not only greatly reduced,
Cost of manufacture is saved, and since touch-control structure is formed in side of the encapsulation cover plate far from OLED backboards, it can
Avoid signal interference problem.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (8)
1. a kind of piezoelectricity touch control organic light-emitting display panel, which is characterized in that including：The OLED for being oppositely arranged and being bonded to each other
Backboard and encapsulation cover plate, the encapsulation cover plate include second substrate and touch-control structure, and the touch-control structure is set to described second
Substrate is backwards to the side of the OLED backboards, wherein
The touch-control structure includes：The first electrode being formed on the second substrate, the first electrode are in the battle array of m1 × n1
Column distribution, m1 are the columns of first electrode, and n1 is the line number of first electrode, m1 >=2, n1 >=2；Be formed in the first electrode with
And the first medium layer on the unlapped second substrate of first electrode, multiple through-holes are provided in the first medium layer；
The piezoelectric material layer being formed on the first medium layer, the piezoelectric material layer pass through the multiple through-hole and first electricity
Pole connects；The second electrode being formed on the piezoelectric material layer, the second electrode are in the array distribution of m2 × n2, m2 the
The columns of two electrodes, n2 are the line number of second electrode, m2 >=2, n2 >=2, and the throwing of the first electrode and the second electrode
Shadow is completely superposed；And it is formed in the second electrode and the unlapped piezoelectric material layer of the second electrode and first medium
Second dielectric layer on layer.
2. piezoelectricity touch control organic light-emitting display panel as described in claim 1, which is characterized in that the piezoelectric material layer is complete
The first electrode that through-hole described in all standing is exposed.
3. piezoelectricity touch control organic light-emitting display panel as described in claim 1, which is characterized in that the first electrode and
Two electrodes are transparent electrode.
4. piezoelectricity touch control organic light-emitting display panel as described in claim 1, which is characterized in that the OLED backboards include
First substrate, the TFT routing layers being formed on the first substrate and the OLED luminescent layers being formed on the TFT routing layers.
5. a kind of organic light emitting display, which is characterized in that including piezoelectricity touch-control according to any one of claims 1 to 4
Formula organic light emitting display panel.
6. a kind of manufacturing method of piezoelectricity touch control organic light-emitting display panel, which is characterized in that including：
Second substrate is provided；
The first conductive layer is formed in the side of the second substrate, and graphical first conductive layer to be to form first electrode,
The first electrode is in the array distribution of m1 × n1, and m1 is the columns of first electrode, and n1 is the line number of first electrode, m1 >=2, n1
≥2；
First medium layer is formed in the first electrode and the unlapped second substrate of the first electrode, and described in etching
First medium layer is to form multiple through-holes for exposing the first electrode；
Piezoelectric material layer is formed in the first electrode that the multiple through-hole exposes；
The second conductive layer is formed on the piezoelectric material layer, and graphically second conductive layer is to form second electrode, institute
State second electrode be in m2 × n2 array distribution, m2 be second electrode columns, n2 be second electrode line number, m2 >=2, n2 >=
2, and the projection of the first electrode and the second electrode is completely superposed；
Second is formed in the second electrode and the unlapped piezoelectric material layer of the second electrode and first medium layer to be situated between
Matter layer；And
OLED backboards are provided and the other side of the OLED backboards and the second substrate fits.
7. the manufacturing method of piezoelectricity touch control organic light-emitting display panel as claimed in claim 6, which is characterized in that the pressure
The first electrode that the through-hole is exposed is completely covered in material layer.
8. the manufacturing method of piezoelectricity touch control organic light-emitting display panel as claimed in claim 6, which is characterized in that described
One conductive layer and the second conductive layer are all made of transparent conductive material.
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| CN106527792B (en) * | 2016-10-25 | 2019-09-10 | 上海天马微电子有限公司 | Display panel and display device |
| CN107359182B (en) * | 2017-07-25 | 2020-03-17 | 武汉华星光电半导体显示技术有限公司 | Manufacturing method of OLED display screen integrated with touch function |
| CN107643846A (en) * | 2017-08-18 | 2018-01-30 | 深圳天珑无线科技有限公司 | A kind of touch-control OLED device |
| CN107832671B (en) * | 2017-10-10 | 2021-03-23 | 成都大超科技有限公司 | Display device and electronic apparatus |
| CN107798300A (en) * | 2017-10-10 | 2018-03-13 | 成都安瑞芯科技有限公司 | Ultrasonic fingerprint identification module, device and electronic equipment |
| CN107967443A (en) * | 2017-10-10 | 2018-04-27 | 成都安瑞芯科技有限公司 | Display module and electronic equipment |
| CN110277429B (en) * | 2019-06-20 | 2021-11-16 | 武汉天马微电子有限公司 | Flexible display panel and flexible display device |
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Application publication date: 20160622 Assignee: Yungu (Gu'an) Technology Co., Ltd.|Bazhou Yungu Electronic Technology Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd Assignor: Kunshan Guo Xian Photoelectric Co., Ltd. Contract record no.: X2019990000157 Denomination of invention: Piezoelectric touch organic light emitting display panel, manufacturing method and organic light emitting display Granted publication date: 20181109 License type: Common License Record date: 20191031 |
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Effective date of registration: 20191211 Address after: No. 2 Xiangshan Avenue, Yongning Street, Zengcheng District, Guangzhou, Guangdong province (the core of Zengcheng economic and Technological Development Zone) Patentee after: Guangzhou Guoxian Technology Co., Ltd Address before: 215300, No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou, 4 Patentee before: Kunshan Guo Xian Photoelectric Co., Ltd. |
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