CN107643846A - A kind of touch-control OLED device - Google Patents
A kind of touch-control OLED device Download PDFInfo
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- CN107643846A CN107643846A CN201710716518.9A CN201710716518A CN107643846A CN 107643846 A CN107643846 A CN 107643846A CN 201710716518 A CN201710716518 A CN 201710716518A CN 107643846 A CN107643846 A CN 107643846A
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- Prior art keywords
- touch
- piezoelectric
- piezoelectric unit
- oled device
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Abstract
The invention discloses a kind of touch-control OLED device, belongs to ceramic touch-control field.The touch-control OLED device includes display panel, multiple piezoelectric units and touch-control circuit, by the way that multiple piezoelectric units are arranged at into panel surface, touch-control circuit couples multiple piezoelectric units, the present invention can be when piezoelectric unit be to sense piezoelectric signal caused by the pressure of screen, touch-control circuit detects piezoelectric signal caused by least one piezoelectric unit, realizes the position of touch matched corresponding to the piezoelectric unit for producing piezoelectric signal.There is foreign matter compared to capacitance touching control technology finger in the prior art, the phenomenon for causing touch-control insensitive or failing, in the case that even if the embodiment of the present invention has foreign matter on finger, screen touch area can also be accurately judged to, touch screen is removed, production technology also can specific capacitance formula touch-screen it is simply a lot.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of touch-control OLED device.
Background technology
The main flow touch screen carried in current phone is capacitive touch screen, and its operation principle is：When finger is touched in table
When on the metal level of face, because human body electric field, user and touch screen surface form a coupled capacitor, for high frequency electric,
Electric capacity is direct conductor, and then finger siphons away the electric current of a very little from contact point.This electric current is respectively from the corner of touch-screen
On electrode in flow out, and the electric current for flowing through this four electrodes is directly proportional to the distance of finger to corner, and it is right that controller passes through
The accurate calculating of this four current ratios, draw the position of touch point.
Existing capacitance touching control technology has a disadvantage that：1st, coupled capacitor is produced using contact of the finger with screen, still
When finger has foreign matter (such as water, spot), the capacity effect between finger and screen is died down, and touch-control at this moment can be caused insensitive
Or phenomena such as failure；2nd, the production technology of current touch technology is more complicated, it is necessary to which display screen manufacturer and touch-screen manufacturer are close
Cooperation could be completed.
The content of the invention
The present invention solves the technical problem of by providing a kind of touch-control OLED device, can solve capacitance touching control
The technical problem that technology causes touch-control insensitive or failed because of foreign matter.
In order to solve the above technical problems, one aspect of the present invention is：A kind of OLED device of touch-control is provided.
The OLED device includes display panel, multiple piezoelectric units and touch-control circuit；The multiple piezoelectric unit is set in parallel in
The display surface side, the touch-control circuit couples the multiple piezoelectric unit, to detect at least one piezoelectricity list
Caused by member during piezoelectric signal, the position of touch corresponding to the piezoelectric unit for producing the piezoelectric signal is matched.
Wherein, each self-capacitance of the multiple piezoelectric unit is different, and it is corresponding that affiliated touch-control circuit matches the piezoelectric signal
The electric capacity, so as to obtain the piezoelectric unit corresponding to the electric capacity or its position of touch.
Wherein, each piezoelectric unit is connected to alone an independent terminals of the touch-control circuit, the touch-control
Circuit by searching the terminal corresponding to the piezoelectric signal, with find the piezoelectric unit corresponding to the electric capacity or its
Position of touch.
Wherein, the piezoelectric unit is arranged at the back side of the display panel.
Wherein, the piezoelectric unit is bonded by double faced adhesive tape with OLED screen.
Wherein, the piezoelectric unit array is arranged at panel surface.
Wherein, protective glass is further comprised, the protective glass is arranged at display panel front outermost.
Wherein, the protective glass is arranged at display panel front outermost by way of being bonded entirely.
Wherein, in addition to：The piezoelectric unit is piezoelectric ceramic piece.
Wherein, the touch-control circuit includes：Drive control device and CPU, the drive control device are respectively coupled to
The CPU and the piezoelectric unit, the drive control device are detected caused by least one piezoelectric unit
During piezoelectric signal, the piezoelectric signal is sent to the CPU, to match the institute for producing the piezoelectric signal
State the position of touch corresponding to piezoelectric unit.
The beneficial effects of the invention are as follows：The situation of prior art is different from, the present invention provides a kind of touch-control OLED device, leads to
Cross and multiple piezoelectric units are arranged at panel surface, touch-control circuit couples multiple piezoelectric units, when piezoelectric unit senses
Piezoelectric signal can be produced during the pressure of screen, it is real when touch-control circuit detects piezoelectric signal caused by least one piezoelectric unit
The position of touch corresponding to the piezoelectric unit for producing piezoelectric signal is now matched, compared to capacitance touching control technology in the prior art
Finger has foreign matter, the phenomenon for causing touch-control insensitive or failing, even if in the case that the embodiment of the present invention has foreign matter on finger,
It is limited to touch-control influential effect, so as to be accurately judged to screen touch area；Due to existing touch screen being removed, it is not necessary to
Be fabricated separately touch screen, production technology also can specific capacitance formula touch-screen it is simply a lot.
Brief description of the drawings
Fig. 1 is the laminated construction schematic diagram of touch-control OLED device embodiment of the present invention；
Fig. 2 is the touch-control circuit schematic diagram of touch-control OLED device embodiment of the present invention；
Fig. 3 is that the piezoelectric unit of touch-control OLED device embodiment of the present invention is arranged at the schematic diagram of panel surface；
Fig. 4 is the piezoelectric unit of the embodiment of touch-control OLED device one of the present invention and the connection diagram of touch-control circuit；
Fig. 5 is the piezoelectric unit of another embodiment of touch-control OLED device of the present invention and the connection diagram of touch-control circuit.
Embodiment
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
In describing below, in order to illustrate rather than in order to limit, give the explanation schematic diagram of many technical characteristics, so as to
Thoroughly understand the embodiment of the present invention.However, it will be clear to one skilled in the art that in the other realities for not having these details
The present invention can also be realized by applying in example.In other situations, the detailed description to well-known structure is omitted, so as not to it is unnecessary
Details hinder description of the invention.
Touch-control is insensitive or failure in order to effectively solve the problems, such as to have foreign matter to cause to occur by capacitance touching control technology finger, this
Invent an embodiment and a kind of touch-control OLED device, including display panel, multiple piezoelectric units and touch-control circuit are provided；It is described
Multiple piezoelectric units are set in parallel in display panel side, and the touch-control circuit couples the multiple piezoelectric unit, to detect
To during piezoelectric signal, matching the piezoelectric unit institute that produces the piezoelectric signal caused by least one piezoelectric unit
Corresponding position of touch.It is described in detail below.
Refering to Fig. 1, Fig. 1 shows the laminated construction schematic diagram of touch-control OLED device embodiment of the present invention, multiple piezoelectricity
Unit 103 is set in parallel in the side of OLED display panel 102.Further, including protective glass 101, protective glass 101 are set
In 102 positive outermost of OLED display panel, and protective glass 101 is arranged at OLED display panel by full laminating type
102 positive outermosts, multiple piezoelectric units 103 are bonded by double faced adhesive tape with OLED display panel.
Refering to Fig. 2, Fig. 2 shows the touch-control circuit schematic diagram of touch-control OLED device embodiment of the present invention, touch-control circuit
Including drive control device 202 and central processing unit CPU 201, drive control device 202 couples multiple piezoelectric units and centre
Unit CPU 201 is managed, when drive control device 202 detects piezoelectric signal caused by wherein at least one piezoelectric unit, by piezoelectricity
Signal is sent to central processing unit CPU 201, and then is matched and obtained the touch-control corresponding to the piezoelectric unit of generation piezoelectric signal
Position.
Refering to Fig. 3, Fig. 3 shows that the piezoelectric unit of touch-control OLED device embodiment of the present invention is arranged at display panel table
The schematic diagram in face, multiple piezoelectric unit 301n (n is positive integer) array parallels are arranged at the surface of OLED display panel 302, multiple
Piezoelectric unit 301n each self-capacitance can be difference by technique adjustment.Because ceramic dielectric has piezo-electric effect, this is intrinsic
Attribute, so a piezoelectric unit can be a small potsherd, the potsherd of multiple array arrangements forms the pottery of a monoblock
Ceramics, the potsherd of monoblock are set in parallel in the surface of OLED display panel 302, and the potsherd of monoblock is shown by double faced adhesive tape and OLED
Show that panel 302 is bonded.
Refering to Fig. 4, Fig. 4 shows the piezoelectric unit of the embodiment of touch-control OLED device one of the present invention and the company of touch-control circuit
Schematic diagram is connect, multiple piezoelectric unit 401n (n is positive integer) are connected to a terminal of drive control device 402.It is more in Fig. 4
Individual piezoelectric unit 401n corresponds to multiple piezoelectric unit 301n in above-mentioned Fig. 3.
From formula (1),
Q=UC (1)
When screen is pressurized by touch-control, the piezoelectric unit of corresponding region can produce piezo-electric effect, due to multiple piezoelectric units
Each self-capacitance it is different, electric capacity corresponding to touch-control circuit matching piezoelectric signal, so as to obtain piezoelectric unit corresponding to electric capacity or its
Position of touch, screen touch area can be accurately judged to by this mechanism.
For example, the static capacity of piezoelectric unit 3011 corresponding to region 1 is C1 on multiple piezoelectric units 301 in Fig. 3, region 2
The corresponding static capacity of piezoelectric unit 3012 is C2, when touch area 1,2 corresponding region of region, electric charge caused by piezoelectric unit
Amount is all Q.Piezoelectric unit 3011, electrical potential difference U1, U2 at the both ends of piezoelectric unit 3012 are respectively calculated as follows formula (2) (3)：
U1=Q/ (C1) (2)
U2=Q/ (C2) (3)
Piezoelectric unit 3011, piezoelectric unit 3012 distinguish piezoelectric unit 4011, piezoelectric unit 4012 in corresponding diagram 4 in Fig. 3,
Therefore, piezoelectric unit 4011, the static capacity of piezoelectric unit 4012 are respectively C1, C2 in Fig. 4, and the electrical potential difference at both ends is U1, U2,
Drive control device 402 is by matching electric capacity C1, C2 corresponding to piezoelectric signal U1, U2, to obtain corresponding piezoelectric unit 4011, pressure
Electric unit 4012 or its position of touch, that is, obtain piezoelectric unit 3011, piezoelectric unit 3012 or its position of touch.
Refering to Fig. 5, Fig. 5 shows the piezoelectric unit and touch-control circuit of another embodiment of touch-control OLED device of the present invention
Connection diagram, multiple piezoelectric unit 501n (n positive integers) are connected to alone an independent terminals of drive control device 502.
Multiple piezoelectric unit 501n in Fig. 5 correspond to multiple piezoelectric unit 301n in above-mentioned Fig. 3.
From formula (1),
U=CQ (1)
When screen is pressurized by touch-control, the piezoelectric unit of corresponding region can produce piezo-electric effect, due to multiple piezoelectric units
Each self-capacitance it is different, touch-control circuit is by searching the terminal corresponding to piezoelectric signal, so as to obtain piezoelectricity corresponding to electric capacity
Unit or its position of touch, screen touch area can be accurately judged to by this mechanism.
For example, the static capacity of piezoelectric unit 3011 corresponding to region 1 is C1 on multiple piezoelectric units 301 in Fig. 3, region 2
The corresponding static capacity of piezoelectric unit 3012 is C2, when touch area 1,2 corresponding region of region, electric charge caused by piezoelectric unit
Amount is all Q.Piezoelectric unit 3011, electrical potential difference U1 ', the U2 ' at the both ends of piezoelectric unit 3012 are respectively calculated as follows formula (4) (5)：
U1 '=Q/ (C1) (4)
U2 '=Q/ (C2) (5)
Piezoelectric unit 3011, piezoelectric unit 3012 distinguish piezoelectric unit 5011, piezoelectric unit 5012 in corresponding diagram 5 in Fig. 3,
Therefore, piezoelectric unit 5011, the static capacity of piezoelectric unit 5012 are respectively C1, C2 in Fig. 5, the electrical potential difference at both ends is U1 ',
U2 ', drive control device 502 by searching terminal corresponding to piezoelectric signal U1 ', U2 ', with piezoelectric unit 5011 corresponding to obtaining,
Piezoelectric unit 5012 or its position of touch, that is, obtain piezoelectric unit 3011, piezoelectric unit 3012 or its position of touch.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, it is included within the scope of the present invention.
Claims (10)
- A kind of 1. touch-control OLED device, it is characterised in that including：Display panel, multiple piezoelectric units and touch-control circuit；The multiple piezoelectric unit is set in parallel in the display panel side, and the touch-control circuit couples the multiple piezoelectricity list Member, when detecting piezoelectric signal caused by least one piezoelectric unit, to match the institute for producing the piezoelectric signal State the position of touch corresponding to piezoelectric unit.
- 2. OLED device according to claim 1, it is characterised in thatEach self-capacitance of the multiple piezoelectric unit is different, and affiliated touch-control circuit matches the electricity corresponding to the piezoelectric signal Hold, so as to obtain the piezoelectric unit corresponding to the electric capacity or its position of touch.
- 3. OLED device according to claim 1, it is characterised in thatEach piezoelectric unit is connected to alone an independent terminals of the touch-control circuit, and the touch-control circuit is by looking into The terminal corresponding to the piezoelectric signal is looked for, to find the piezoelectric unit corresponding to the electric capacity or its position of touch.
- 4. according to the OLED device described in any one of claims 1 to 3, it is characterised in thatThe piezoelectric unit is arranged at the back side of the display panel.
- 5. according to the OLED device described in any one of claims 1 to 3, it is characterised in thatThe piezoelectric unit is bonded by double faced adhesive tape with OLED screen.
- 6. according to the OLED device described in any one of claims 1 to 3, it is characterised in thatThe piezoelectric unit array is arranged at panel surface.
- 7. according to the OLED device described in any one of claims 1 to 3, it is characterised in thatIncluding protective glass, the protective glass is arranged at display panel front outermost.
- 8. OLED device according to claim 7, it is characterised in thatThe protective glass is arranged at display panel front outermost by way of being bonded entirely.
- 9. according to the OLED device described in any one of claims 1 to 3, it is characterised in that including：The piezoelectric unit is piezoelectric ceramic piece.
- 10. according to the OLED device described in any one of claims 1 to 3, it is characterised in that the touch-control circuit includes：Drive control device and CPU, the drive control device are respectively coupled to the CPU and the piezoelectricity Unit, when the drive control device detects piezoelectric signal caused by least one piezoelectric unit, by the piezoelectric signal Send to the CPU, to match the touch-control position corresponding to the piezoelectric unit for producing the piezoelectric signal Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710716518.9A CN107643846A (en) | 2017-08-18 | 2017-08-18 | A kind of touch-control OLED device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710716518.9A CN107643846A (en) | 2017-08-18 | 2017-08-18 | A kind of touch-control OLED device |
Publications (1)
| Publication Number | Publication Date |
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| CN107643846A true CN107643846A (en) | 2018-01-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710716518.9A Withdrawn CN107643846A (en) | 2017-08-18 | 2017-08-18 | A kind of touch-control OLED device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115942858A (en) * | 2023-03-10 | 2023-04-07 | 荣耀终端有限公司 | terminal device |
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|---|---|---|---|---|
| CN103123563A (en) * | 2013-03-04 | 2013-05-29 | 太原理工大学 | Single electrode capacitive touch bar |
| CN104246669A (en) * | 2012-03-13 | 2014-12-24 | 纳米技术方案公司 | Method of capacitive measurement by nonregular electrodes, and apparatus implementing such a method |
| CN204087159U (en) * | 2014-10-31 | 2015-01-07 | 合肥鑫晟光电科技有限公司 | A kind of touch-screen and display panel |
| CN105702701A (en) * | 2014-11-25 | 2016-06-22 | 昆山国显光电有限公司 | Piezoelectric touch organic light-emitting display panel and manufacturing method thereof, and organic light-emitting display |
| CN106445236A (en) * | 2016-10-11 | 2017-02-22 | 厦门天马微电子有限公司 | Touch display panel and touch display device |
-
2017
- 2017-08-18 CN CN201710716518.9A patent/CN107643846A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246669A (en) * | 2012-03-13 | 2014-12-24 | 纳米技术方案公司 | Method of capacitive measurement by nonregular electrodes, and apparatus implementing such a method |
| CN103123563A (en) * | 2013-03-04 | 2013-05-29 | 太原理工大学 | Single electrode capacitive touch bar |
| CN204087159U (en) * | 2014-10-31 | 2015-01-07 | 合肥鑫晟光电科技有限公司 | A kind of touch-screen and display panel |
| CN105702701A (en) * | 2014-11-25 | 2016-06-22 | 昆山国显光电有限公司 | Piezoelectric touch organic light-emitting display panel and manufacturing method thereof, and organic light-emitting display |
| CN106445236A (en) * | 2016-10-11 | 2017-02-22 | 厦门天马微电子有限公司 | Touch display panel and touch display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115942858A (en) * | 2023-03-10 | 2023-04-07 | 荣耀终端有限公司 | terminal device |
| CN115942858B (en) * | 2023-03-10 | 2023-10-20 | 荣耀终端有限公司 | terminal device |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180130 |
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| WW01 | Invention patent application withdrawn after publication |