CN104281350A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN104281350A CN104281350A CN201410520654.7A CN201410520654A CN104281350A CN 104281350 A CN104281350 A CN 104281350A CN 201410520654 A CN201410520654 A CN 201410520654A CN 104281350 A CN104281350 A CN 104281350A
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- electrode layer
- display panel
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention belongs to the technical field of display, and particularly relates to a display panel and a display device. The display panel comprises a display screen and an additional electrode layer. The outer layer of the display screen is of a public electrode layer. The additional electrode layer is arranged on the outer side of the public electrode layer. Insulators are arranged between the additional electrode layer and the public electrode layer at intervals. The display panel has a touch control function and is simple in structure, low in production cost and high in yield, and simplicity and convenience in man-machine interaction between human and the display panel are realized.
Description
Technical field
The invention belongs to display technique field, be specifically related to a kind of display panel and display device.
Background technology
Touch screen (Touch panel) is information input equipment up-to-date at present, it can simply, convenient, naturally realize man-machine interaction, for people provide a kind of brand-new multimedia human-computer interaction method, greatly meet the vision of people and the enjoyment of sense of touch.Along with the with rapid changepl. never-ending changes and improvements of display technique and competition grow in intensity, low cost can be realized, high performance touch-control display structure becomes a kind of trend.
The display device with touch controllable function can be divided into resistance-type, condenser type, surface acoustic wave type and infrared type etc. according to principle of induction, can be divided into: external hanging type (Out-cell) structure, covering surfaces formula (On-cell) structure and embedded (In-cell) structure according to the structural relation of touch screen (Touch panel) with display screen.
At present, most of touch screen adopts the capacitance structure of external hanging type, and be namely hung on display screen by outside the touch-screen that made by two-layer conducting film, its advantage is: capacitive touch screen touch characteristic is better; Shortcoming is: cost is high, and there is the cost allowance caused because laminating produces fraction defective.
Therefore, design one has touch controllable function, and structure is simple, and cost of manufacture is low, and the display device that yields is high becomes technical matters urgently to be resolved hurrily at present.
Summary of the invention
Technical matters to be solved by this invention is for above shortcomings in prior art, provides a kind of display panel and display device, and this display panel has touch controllable function, achieve people and display panel human-computer interaction simply, easily, and structure is simple, cost of manufacture is low, and yields is high.
The technical scheme that solution the technology of the present invention problem adopts is this display panel, comprise display screen, the skin of described display screen is common electrode layer, wherein, this display panel also comprises additional electrode layer, described additional electrode layer is positioned at the outside of described common electrode layer, and is arranged at intervals with insulant between described additional electrode layer and described common electrode layer.
Preferably, described additional electrode layer adopts transparent electrode material or conducting polymer composite to be formed, described transparent electrode material comprises any one in indium oxide gallium zinc, indium zinc oxide, tin indium oxide, indium oxide gallium tin, indium oxide, zinc paste, indium tin zinc oxide, nano-silver thread or carbon nano-tube, described conducting polymer composite comprises can transfer printing nesa coating or 3,4-ethylene dioxythiophene monomer-polymer and poly styrene sulfonate aqueous solution.
Preferably, described common electrode layer and described additional electrode layer are tabular, described common electrode layer ground connection; Described additional electrode layer applies 0V, 5V voltage respectively on the summit that it is relative.
Preferably, also comprise voltage sensor, analog to digital converter and processor, wherein:
Described voltage sensor: its input end is connected with described additional electrode layer, for sensing the voltage of described additional electrode layer;
Described analog to digital converter: its input end is connected with the output terminal of described voltage sensor, for being digital voltage signal by the described voltage transitions sensed;
Described processor: prestore reference voltage level in it, for the ratio according to described digital voltage signal and described reference voltage level, judge whether described additional electrode layer voltage changes and the coordinate figure of voltage change occurs, thus determine the position of touch point.
Preferably, described voltage sensor timesharing senses the voltage change of described additional electrode layer in mutually perpendicular both direction; The point that the voltage of described additional electrode layer in mutually perpendicular both direction changes by described processor as the X-coordinate value of touch point and Y-coordinate value, thus determines the position of touch point.
Preferably, described insulant is spherical or cylindric, and described insulant is even or be unevenly arranged between common electrode layer and additional electrode layer.
Preferably, described insulant adopts plastic cement system, the resin material of glass system or silicon oxygen system formed.
Preferably, described insulant is arranged at the outside of described common electrode layer by spray pattern, and described additional electrode layer forms entirety by pressing mode and described display screen.
Preferably, described display screen is organic EL display panel or electrophoretic display panel or LCDs.
A kind of display device, comprises described display panel.
The invention has the beneficial effects as follows: this display panel utilizes the common electrode layer in display screen, and the patternless transparent additional electrode layer of one deck is additionally set thereon, share common electrode layer and realize display and touch controllable function, simplify structure and the manufacture craft of the display panel of plug-in touch-screen, improve product yield, reduce cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the structural representation of display panel in the embodiment of the present invention 1;
Fig. 2 A executes alive schematic diagram in Fig. 1 in additional electrode layer;
Fig. 2 B executes alive schematic diagram in Fig. 1 in common electrode layer;
In Reference numeral:
10-display screen; 11-key-course; 12-display layer; 13-common electrode layer;
20-touch control unit; 21-additional electrode layer; 22-insulant.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, display panel of the present invention and display device are described in further detail.
Embodiment 1:
The present embodiment provides a kind of display panel, this display panel comprises display screen, and the skin of display screen is common electrode layer, and this display panel also comprises additional electrode layer, additional electrode layer is positioned at the outside of common electrode layer, and is arranged at intervals with insulant between additional electrode layer and common electrode layer.
As shown in Figure 1, display screen 10 and touch control unit 20 can be divided in this display panel, wherein, display screen 10 comprises key-course (such as thin film transistor (TFT), Thin Film Transistor, be called for short TFT), display layer 12 (such as organic electroluminescent device OLED or realize the liquid crystal layer of the control whether backlight light passes through by TFT controls) and common electrode layer 13 (being generally used for providing reference voltage), touch control unit 20 comprises common electrode layer 13, additional electrode layer 21 and the insulant 22 be arranged between common electrode layer 13 and additional electrode layer 21.Common electrode layer 13 is wherein that display and touch-control share.
Wherein, common electrode layer 13 and additional electrode layer 21 are tabular, adopting common electrode layer 13 and the additional electrode layer 21 of tabular, without the need to forming any pattern in common electrode layer 13 and additional electrode layer 21, making the structure of this display panel relatively simple; Also correspondingly eliminate the patterning processes forming pattern, greatly simplifie the preparation technology of this display panel.
Common electrode layer 13 ground connection (namely connecing 0V voltage), additional electrode layer 21 applies 0V, 5V voltage respectively on the summit that it is relative.Wherein relative summit refers to, two summits in the clinodiagonal being positioned at rectangle tabular as shown in Figure 2 A and 2 B, and these two summit one apply 0V voltage, and another summit applies 5V voltage.
Meanwhile, as shown in Figure 2 B, by applying touch-control reference voltage in the common electrode layer 13 being in relative internal layer, making common electrode layer 13 as just pure conductor, only needing an extension line; And as shown in Figure 2 A, the summit that the additional electrode layer 21 being in opposed outer layer is relative applies 0V, 5V voltage respectively, thus form two pairs of parallel lines at the edge of additional electrode layer 21, these two pairs of parallel lines are vertically arranged, four extension lines can be set, and in this, as the detection X-axis of touch point and the wire of Y-axis magnitude of voltage.
Preferably, additional electrode layer 21 adopts transparent electrode material or conducting polymer composite to be formed, and transparent electrode material comprises indium oxide gallium zinc (IGZO), indium zinc oxide (IZO), tin indium oxide (ITO), indium oxide gallium tin (InGaSnO), indium oxide (In
2o
3), zinc paste (ZnO), indium tin zinc oxide (ITZO), nano-silver thread (Nanometer Agnanowire, be called for short NAGW) or carbon nano-tube (Carbon Nanotube, be called for short CNT) in any one, conducting polymer composite comprises can transfer printing nesa coating (Transparent Conductive Transfer Film, be called for short TCTF) or 3,4-ethylene dioxythiophene monomer-polymer and poly styrene sulfonate aqueous solution (PEDOT:PSS).Adopt transparent material to form additional electrode layer 21, therefore can not have any impact to the image display of display screen 10.
Insulant 22 is spherical or cylindric, and insulant is even or be unevenly arranged between common electrode layer 13 and additional electrode layer 21.Preferably, insulant 22 adopts plastic cement system, the resin material of glass system or silicon oxygen system formed.Such as, the spherical particle that this insulant 22 can be the spherical particle (beaded particles in other words, Beads Spacer) that formed of the acryl resin of plastic cement system and light spacer (Photo Spacer), glass system resin is formed cylindric (bar-shaped in other words) particle, spherical particle and silicon oxygen system resin are formed.This insulant 22 also adopts transparent material to be formed, and therefore can not have any impact to the image display of display screen 10.And, this insulant 22 is arranged at intervals between common electrode layer 13 and additional electrode layer 21, can play and make to insulate between common electrode layer 13 and additional electrode layer 21 object of isolating, the deformation of additional electrode layer 21 can not be affected again when there being finger to press display panel, hindering additional electrode layer 21 to contact with common electrode layer 13.
Insulant 22 is arranged at the outside of common electrode layer 13 by spray pattern, and additional electrode layer 21 forms entirety by pressing mode and display screen 10.By additional electrode layer 21 and display screen 10 pressing are formed one, the rhythmo structure realizing there is Presentation Function and touch controllable function simultaneously can be integrated on the basis of display screen 10.And adopt pressing mode to form this rhythmo structure, hinge structure is fitted the mode of external hanging type capacitive touch screen outside display screen 10, has higher product yield, effectively can reduce the damage cost of display screen 10.
According to said structure, define electric resistance touch-control unit 20 in this display panel by common electrode layer 13 and additional electrode layer 21, common electrode layer 13 wherein can time-sharing multiplex be the common electric voltage reference edge shown, and the common electric voltage reference edge of touch-control.Such as, when display frequency is 60Hz, common electrode layer 13 as display common electric voltage reference edge time and be respectively 1/60 second as the time of the common electric voltage reference edge of touch-control, successively circulation for display and touch-control multiplexing.
In touch-control process, common electrode layer 13 forms the bottom electrode of touch control unit 20, additional electrode layer 21 forms the top electrode of touch control unit 20, when making additional electrode layer 21 and common electrode layer 13 come in contact when there being finger to press in additional electrode layer 21, namely cause the voltage of additional electrode layer 21 relevant position point to change, form pressure drop, by changing the detecting of some position to this voltage, the coordinate figure of touch point can be determined, and then determine touch point position.
In order to realize the detection of display panel position of touch, the display panel of the present embodiment also comprises voltage sensor, analog to digital converter and processor, wherein:
Voltage sensor: its input end is connected with additional electrode layer 21, for sensing the voltage of additional electrode layer 21;
Analog to digital converter: its input end is connected with the output terminal of voltage sensor, the voltage transitions for sensing is digital voltage signal;
Processor: prestore reference voltage level Vref in it, for the ratio according to digital voltage signal and reference voltage level, judges whether additional electrode layer 21 voltage changes and the coordinate figure of voltage change occurs, thus determines the position of touch point.
In testing process, the voltage of voltage sensor timesharing sensing additional electrode layer 21 in mutually perpendicular both direction changes; The point that the voltage of additional electrode layer 21 in mutually perpendicular both direction changes by processor as the X-coordinate value of touch point and Y-coordinate value, thus determines the position of touch point.
Concrete, determine in the present embodiment that the method that display panel realizes position of touch is: fix a point to be connected for one of voltage sensor and additional electrode layer 21, and fix a point as relative zero position reference point with this that (coordinate figure can be considered (0, 0), touch-control process is that absolute coordinate system detects) can one-shot measurement be made when common electrode layer 13 and additional electrode layer 21 contact, obtain the voltage of touch point in X-direction, then the ratio of this voltage and reference voltage level Vref is calculated by processor, and then the distance of fixed point by voltage sensor and additional electrode layer 21, the distance of touch point apart from this fixed point is obtained according to this ratio calculation, also the X-coordinate value of touch point is namely obtained, then, when common electrode layer 13 and additional electrode layer 21 contact (in a short period of time, in such as 1/60 second) remake one-shot measurement, obtain the voltage of touch point in Y direction, then the ratio of this voltage and reference voltage level Vref is calculated by processor, and then the distance of fixed point by voltage sensor and additional electrode layer 21, obtain the distance of touch point apart from this fixed point according to this ratio calculation, also namely obtain the Y-coordinate value of touch point, finally, according to (X, Y) coordinate figure of touch point, thus the position of touch point is obtained.
In the present embodiment, display screen 10 in this display panel is the display screen comprising OLED (Organic Light-Emitting Diode: organic electroluminescent LED), OLED display panel has the plurality of advantages such as autoluminescence, fast response time wide viewing angle, can be used for Flexible Displays, Transparence Display, the multiple application such as 3D display.It is easily understood that this OLED display panel can be flexible or inflexibility, do not limit here.
According to the difference of type of drive, OLED display screen can be divided into passive matrix (Passive Matrix Organic Light Emission Display, be called for short PMOLED) display screen and active matrix (Active Matrix Organic Light Emission Display is called for short AMOLED) display screen.Especially have with AMOLED display screen that drive current is little, low in energy consumption, the life-span is long, and the advantage in the reduction, power consumption and response time etc. of visible angle, color, be applicable to high information content, high-resolution display.Therefore, when adopting said structure that AMOLED display screen is formed electric resistance type touch control display panel, its range of application can be expanded further.
In the display panel of the present embodiment, utilize the public electrode in AMOLED display screen (can be the negative electrode of OLED) dexterously, and the patternless transparent additional electrode layer of one deck (Transparency Electrode) is additionally set thereon, share common electrode layer and realize display and touch controllable function, simplify structure and the manufacture craft of the display panel of plug-in touch-screen, improve product yield, reduce cost of manufacture.
Embodiment 2:
The present embodiment provides a kind of display panel, and the display screen in this display panel is the electrophoretic display panel (ElectroPhoretic display, is also E-Paper, is called for short EPD) comprising micro-capsule.
Under normal conditions, the electrophoretic display panel of micro-capsule ink is used to comprise the parts such as transparent substrate, common electrode layer, pixel electrode and thin film transistor (TFT).Contain the charged corpuscle be dispersed in particular color liquid in micro-capsule, micro-capsule ink layer is arranged between common electrode layer and pixel electrode layer, and linearly arranges.
Identical with embodiment 1, the display panel in the present embodiment utilizes the additional electrode layer of electrophoretic display panel pressing layer of transparent outside its outer transparent common electrode layer, integrates the display panel being formed and have touch controllable function concurrently.
It is simple that this display panel has structure, the advantages such as cost of manufacture is low.
Embodiment 3:
The present embodiment provides a kind of display panel, and the display screen in this display panel is the LCDs (Liquid Crystal Display: be called for short LCD) comprising liquid crystal layer.
Under normal circumstances, the liquid crystal layer that LCDs comprises color membrane substrates, array base palte and is arranged between color membrane substrates and array base palte, common electrode layer is provided with in color membrane substrates, pixel electrode layer is provided with in array base palte, and color membrane substrates is positioned at outside relatively, makes common electrode layer relatively be positioned at the skin of display screen.
Therefore, identical with embodiment 1, utilize the common electrode layer in color membrane substrates, additional electrode layer of pressing layer of transparent outside it, integrate the display panel being formed and have touch controllable function concurrently.
It is simple that this display panel has structure, the advantages such as cost of manufacture is low.
Embodiment 4:
The present embodiment provides a kind of display device, and this display device comprises any one display panel in embodiment 1-3.
This display device can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, oled panel, mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.
This display device, while realization display, also has touch controllable function concurrently, achieves people and display panel human-computer interaction simply, easily, and structure is simple, and cost of manufacture is low, and yields is high.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. a display panel, comprise display screen, the skin of described display screen is common electrode layer, it is characterized in that, this display panel also comprises additional electrode layer, described additional electrode layer is positioned at the outside of described common electrode layer, and is arranged at intervals with insulant between described additional electrode layer and described common electrode layer.
2. display panel according to claim 1, it is characterized in that, described additional electrode layer adopts transparent electrode material or conducting polymer composite to be formed, described transparent electrode material comprises any one in indium oxide gallium zinc, indium zinc oxide, tin indium oxide, indium oxide gallium tin, indium oxide, zinc paste, indium tin zinc oxide, nano-silver thread or carbon nano-tube, described conducting polymer composite comprises can transfer printing nesa coating or 3,4-ethylene dioxythiophene monomer-polymer and poly styrene sulfonate aqueous solution.
3. display panel according to claim 1, is characterized in that, described common electrode layer and described additional electrode layer are tabular, described common electrode layer ground connection; Described additional electrode layer applies 0V, 5V voltage respectively on the summit that it is relative.
4. display panel according to claim 3, is characterized in that, also comprises voltage sensor, analog to digital converter and processor, wherein:
Described voltage sensor: its input end is connected with described additional electrode layer, for sensing the voltage of described additional electrode layer;
Described analog to digital converter: its input end is connected with the output terminal of described voltage sensor, for being digital voltage signal by the described voltage transitions sensed;
Described processor: prestore reference voltage level in it, for the ratio according to described digital voltage signal and described reference voltage level, judge whether described additional electrode layer voltage changes and the coordinate figure of voltage change occurs, thus determine the position of touch point.
5. display panel according to claim 4, is characterized in that, described voltage sensor timesharing senses the voltage of described additional electrode layer in mutually perpendicular both direction and changes; The point that the voltage of described additional electrode layer in mutually perpendicular both direction changes by described processor as the X-coordinate value of touch point and Y-coordinate value, thus determines the position of touch point.
6. display panel according to claim 1, is characterized in that, described insulant is spherical or cylindric, and described insulant is even or be unevenly arranged between described common electrode layer and described additional electrode layer.
7. display panel according to claim 1, is characterized in that, described insulant adopts plastic cement system, the resin material of glass system or silicon oxygen system is formed.
8. display panel according to claim 1, is characterized in that, described insulant is arranged at the outside of described common electrode layer by spray pattern, and described additional electrode layer forms entirety by pressing mode and described display screen.
9. the display panel according to any one of claim 1-8, is characterized in that, described display screen is organic EL display panel or electrophoretic display panel or LCDs.
10. a display device, is characterized in that, comprises the display panel described in any one of claim 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410520654.7A CN104281350A (en) | 2014-09-30 | 2014-09-30 | Display panel and display device |
| PCT/CN2015/070612 WO2016050009A1 (en) | 2014-09-30 | 2015-01-13 | Display panel and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410520654.7A CN104281350A (en) | 2014-09-30 | 2014-09-30 | Display panel and display device |
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| CN104281350A true CN104281350A (en) | 2015-01-14 |
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| CN201410520654.7A Pending CN104281350A (en) | 2014-09-30 | 2014-09-30 | Display panel and display device |
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| CN (1) | CN104281350A (en) |
| WO (1) | WO2016050009A1 (en) |
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| CN106155372A (en) * | 2015-03-26 | 2016-11-23 | 鸿富锦精密工业（深圳）有限公司 | In-cell touch display panel |
| CN106406627A (en) * | 2016-11-09 | 2017-02-15 | 上海天马微电子有限公司 | Flexible touch display panel and touch display device |
| CN106843589A (en) * | 2017-01-25 | 2017-06-13 | 京东方科技集团股份有限公司 | OLED touch-control display panels, display device and its driving method |
| CN110570752A (en) * | 2019-09-11 | 2019-12-13 | Oppo广东移动通信有限公司 | Display screen, electronic equipment and control method thereof |
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| CN106155372A (en) * | 2015-03-26 | 2016-11-23 | 鸿富锦精密工业（深圳）有限公司 | In-cell touch display panel |
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| CN106843589A (en) * | 2017-01-25 | 2017-06-13 | 京东方科技集团股份有限公司 | OLED touch-control display panels, display device and its driving method |
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| CN110570752A (en) * | 2019-09-11 | 2019-12-13 | Oppo广东移动通信有限公司 | Display screen, electronic equipment and control method thereof |
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Also Published As
| Publication number | Publication date |
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| WO2016050009A1 (en) | 2016-04-07 |
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