CN102269899B - Print type flexible contact display screen based on resistance effect - Google Patents
Print type flexible contact display screen based on resistance effect Download PDFInfo
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- CN102269899B CN102269899B CN 201110205113 CN201110205113A CN102269899B CN 102269899 B CN102269899 B CN 102269899B CN 201110205113 CN201110205113 CN 201110205113 CN 201110205113 A CN201110205113 A CN 201110205113A CN 102269899 B CN102269899 B CN 102269899B
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Abstract
The invention discloses a print type flexible contact display screen based on a resistance effect. The print type flexible contact display screen comprises a printing layer, a print ink layer, a light transmitting layer, an electrode layer A, an electric control photo switch layer, an electrode layer B, an isolation layer, an electrode layer C and a substrate layer C, wherein the printing layer is foldable and is made of a printable flexible insulation material; the print ink layer is a CMYK (Cyan, Magenta, Yellow, black) ink dot matrix printed on the printing layer; the light transmitting layer is made of a flexible light transmitting material; the electric control photo switch layer is a PDLC (polymer dispersed cholesteric texture) film; the isolation layer is a hollow flexible transparent latticed film; the substrate layer C is a flexible transparent organic film; the electrode layer A, the electrode layer B and the electrode layer C are ITO (indium tin oxide) films printed with electrode matrixes; and the matrix direction of the electrode layer A is the same with that of the electrode layer C, and the matrix direction of the electrode layer A is vertical to that of the electrode layer B. The display screen provided by the invention has a contact function, is short in response time, low in drive voltage, simple in production technology and low in production cost.
Description
Technical field
The present invention relates to the flexible touch display screen of a kind of printed form based on electricresistance effect, belong to print field, also belong to electronic applications.
Background technology
Present display technique can be divided into two big classes: a class is that papery shows that its principal feature is: come displaying contents by reflect ambient light, be easy to colored the demonstration, angle of visibility big (near 180 °), medium softness.Another kind of is that electronics such as CRT, LCD, LED show that its principal feature is: information can refresh fast, relies on display self internal illumination to come displaying contents, need consume more electric energy during work, makes people's fatigue during reading easily, and medium is not soft.
People are putting forth effort to develop the reflective flexible display of class paper (being commonly called as Electronic Paper) over past ten years, the advantage of attempting to overcome the shortcoming of aforementioned two class display techniques and keeping them, though new display have flexible media, can quick automatically controlled displaying contents, by reflect ambient light demonstration, low energy consumption, portable these characteristics.Such flexible display can be applied to a plurality of fields such as e-book, automobile, smart card, label, digital signature, display.
Research and development to the reflective flexible display of class paper, at present development is the electrophoretic techniques of international corporations such as E-Ink, Phlips, IBM, Bell Laboratory faster in the world, and the electrophoresis of electric globule (placing microcapsules or little cup) under electric field action that its displaying principle is based on different colours (being white and black at present basically) moves sight line the reflection of external ambient light is presented two kinds of diverse colors.
Though obtained certain progress based on the flexible display screen of electrophoresis mode at present, also had response speed slow (hundreds of millisecond), be difficult to realize that a series of problems such as colored (will realize colour with different optical filters), production cost height need to solve.
Summary of the invention
The objective of the invention is to remedy the deficiency of prior art, provide a kind of printed form based on electricresistance effect flexible touch display screen, this display screen is light source with the natural light, form colour vision by reflected light, the advantage of have flexible touch function, be easy to colorize, reading is comfortable, manufacturing process is simple, cost is low.
For achieving the above object, the technical solution adopted in the present invention is:
The flexible touch display screen of a kind of printed form based on electricresistance effect, comprise undertake the printing of layer and the printing ink layer that is attached on the layer of undertaking the printing of, be attached with photic zone, electrode layer A, electric control optical switch layer, electrode layer B, separation layer, electrode layer C and substrate layer C from bottom to top at least from printing ink layer; The layer of undertaking the printing of is collapsible and printable flexible insulating material, printing ink layer is the CMYK colored ink dot matrix that produces at the layer of undertaking the printing of with ink printing, photic zone is the soft light material, the electric control optical switch layer is polymer dispersed liquid-crystal film, separation layer is the hollow out mesh-like film of flexible and transparent, substrate layer C is ETEE plastic sheeting or PET plastic sheeting, electrode layer A, electrode layer B and electrode layer C are the ITO conductive film that is carved with electrode matrix, the electrode matrix direction of electrode layer A and electrode layer C is identical, and vertical with the direction of the electrode matrix of electrode layer B.
Be attached with diffuse reflector on the described substrate layer C, diffuse reflector is matt film or gloss oil with diffuse reflection function.
The described substrate layer A that is attached on the photic zone that between photic zone and electrode layer A, is provided with, electrode layer A is attached on the substrate layer A, and substrate layer A is ETEE plastic sheeting or PET plastic sheeting.
Described photic zone is ETEE plastic sheeting, PET plastic sheeting or does not have shadow glue.
Described separation layer is transparent acylate film.
The thickness of described separation layer is 10～50 μ m, preferred 20 μ m.
The thickness of described display screen is no more than 5mm.
Compared with prior art, advantage of the present invention is:
1, display screen provided by the invention adopts the printing-ink technology as black and white and the colored basis that shows, adopts fm screening mode ripe in the printing technology, can obtain higher resolution, improves output accuracy.Utilize the color vision mixing principle in the printing simultaneously, obtain various colors by the stack of printing dot matrix reflected light, the colored solution technology that shows is comparatively ripe, and implementation method is effectively simple and gradation is abundant.
2, display screen provided by the invention is as electric control optical switch with Polymer Dispersed Liquid Crystal (PDLC) film, response time can shorten within the 40ms, driving voltage can be reduced to 25v, obviously is better than the E-INK technology (response time is about 150ms, driving voltage is about 90v) of present main flow.In addition, the PDLC film does not need polaroid, exists and preparation technology easily realizes with the solid film form, is applicable to the technological process of roll-to-roll (Roll-to-Roll) continuity, and manufacture craft is simple, and production cost is low, is fit to large-scale production.And with the display screen of electro-optic crystal as electric control optical switch, though the response time is short, driving voltage is than higher (being about 443v), and the complicated process of preparation of solid film, the cost height.By comparison, display screen of the present invention all has clear superiority at aspects such as driving voltage, manufacture craft and production costs.
3, adopt the TFT substrate as the display screen of electrode at present, because the TFT substrate is a thin film transistor (TFT), not only complex structure, cost height, and mainly be applicable to the transmissive operation mode of backlight.And display screen of the present invention is to adopt the ITO conductive film as control electrode, structure is more simple, cost is low, realize showing by natural reflection of light, do not need special light source, more meet the human eye reading habit, the gloss oil that adopts matt film in addition or have a diffuse reflection function is as diffuse reflector, can eliminate reflectively, improve contrast, improve and read comfort level.
4, the layer of undertaking the printing of of the present invention, photic zone, electrode layer A, electric control optical switch layer, electrode layer B, separation layer, electrode layer C, substrate layer C and diffuse reflector etc. all adopt film, the integral thickness of display screen is no more than 5mm, make the display screen quality light, be easy to flexibility.
5, in the display screen of the present invention, electrode layer B, separation layer and electrode layer C have formed a resistance switch matrix, and during no external force, electrode layer B and electrode layer C be not owing to the influence of separation layer has to connect, and resistance presents infinity; When display screen is touched, deformation takes place in electrode layer C under external force, pass separation layer and electrode layer B comes in contact, make this place, touch point be connected by the resistance switch that electrode layer B, separation layer and electrode layer C form, resistance sharply diminishes, thereby the perception external touch has realized that touch screen functionality can the perception external touch, has realized touch screen functionality.
Description of drawings
The structural representation based on the flexible touch display screen of the printed form of electricresistance effect that Fig. 1 provides for embodiment 1.
Embodiment
The present invention is further illustrated below by specific embodiment, but protection content of the present invention is not limited to following examples.
Embodiment 1
As shown in Figure 1, the bottom of the display screen that present embodiment provides is the layer of undertaking the printing of, printing ink layer is attached on the layer of undertaking the printing of, be attached with photic zone, electrode layer A, electric control optical switch layer, electrode layer B, separation layer, electrode layer C, substrate layer C and diffuse reflector from the bottom to top successively from printing ink layer, the thickness of this display screen is no more than 5mm.
The layer of undertaking the printing of adopts collapsible and printable flexible insulating material, as paper, plastics, cloth etc.Printing-ink on the layer of undertaking the printing of produces CMYK colored ink dot matrix, obtains printing ink layer.Photic zone adopts the soft light material, as ETEE (ETEE is the multipolymer of tetrafluoroethene and ethene) plastic sheeting, PET plastic sheeting or there is not shadow glue, for increasing the distance between printing ink layer and the electric control optical switch layer, make this distance can guarantee that not printing ink layer is hidden light tight fully under the "on" position.
Electrode layer A, electrode layer B and electrode layer C are the ITO conductive film that is carved with electrode matrix.When photic zone during for no shadow glue, add one deck substrate layer A between photic zone and electrode layer A, be attached on the substrate layer A as the ITO conductive film of electrode layer A, substrate layer A is attached on the photic zone, substrate layer A adopts transparent organic film material, as ETEE plastic sheeting or PET plastic sheeting; When photic zone is ETEE or PET plastic sheeting, be attached directly on the photic zone as the ITO conductive film of electrode layer A.Photic zone in the present embodiment is ETEE or PET plastic sheeting, and electrode layer A is attached on the photic zone.ITO conductive film as electrode layer B is the ITO coating that is attached on the electric control optical switch layer.ITO conductive film as electrode layer C is the ITO coating that is attached on the substrate layer C, and substrate layer C adopts transparent organic film material, as ETEE plastic sheeting or PET plastic sheeting.The electrode matrix direction of electrode layer A and electrode layer C is identical, and vertical with the direction of the electrode matrix of electrode layer B, and the electrode matrix of electrode layer A and electrode layer C is X-direction in the present embodiment, and the electrode matrix of electrode layer B is Y direction.
The electric control optical switch layer adopts Polymer Dispersed Liquid Crystal (PDLC) film, and this layer is the display control switch of display screen, realizes colored demonstration by the CMYK colored ink dot matrix on the control printing ink layer, and in general, the electric control optical switch layer is more thick, and contrast is more high.
Separation layer is the transparent flexible mesh-like film of hollow out, and can adopt thickness is the transparent acrylate material of 10～50 μ m, and separation layer thickness is 20 μ m in the present embodiment.Separation layer is only played a supporting role, and is that medium separates electrode layer B with electrode layer C with the air, and the part overlapping at electrode layer B and electrode layer C is air, and not overlapping place is grid solid supports branch.Electrode layer B, separation layer and electrode layer C have formed a resistance switch matrix, and during no external force, electrode layer B and electrode layer C be not owing to the influence of separation layer has to connect, and resistance presents infinity; When display screen is touched, deformation takes place in electrode layer C under external force, pass separation layer and electrode layer C comes in contact, make this place, touch point be connected by the resistance switch that electrode layer B, separation layer and electrode layer C form, resistance sharply diminishes, thereby the perception external touch has realized touch screen functionality.
The gloss oil that diffuse reflector adopts matt film or has the diffuse reflection function, this layer are used for eliminating reflective, improve the reading effect of display screen.
Embodiment 2
The bottom of the flexible touch display screen of the printed form that present embodiment provides is the layer of undertaking the printing of, printing ink layer is attached on the layer of undertaking the printing of, be attached with photic zone A, substrate layer A, electrode layer A, electric control optical switch layer, electrode layer B, separation layer, electrode layer C and substrate layer C from the bottom to top successively from printing ink layer, the thickness of this display screen is no more than 5mm.Photic zone adopts no shadow glue in the present embodiment, and other each layer material therefors are identical with embodiment 1.
The preparation method of the flexible touch display screen of the printed form based on electricresistance effect of the present invention is as follows:
(1) adopt intaglio printing mode printing-ink at the layer of undertaking the printing of, produce CMYK colored ink dot matrix, obtain being attached with the layer of undertaking the printing of of printing ink layer, its technological process is: flexible base, board preparation → adjustment of the printing plate → adjustment rule → formal printing → seal aftertreatment.The automaticity height of intaglio press, plate-making quality is good, and technological operation is simple.
(2) coating flexible light transmissive material such as ETEE, PET plastic sheeting or do not have shadow glue on the layer of undertaking the printing of obtain photic zone.
(3) when photic zone is ETEE or PET plastic sheeting, sputter transparent indium tin oxide coating obtains the ITO conductive film on photic zone; When photic zone during for no shadow glue, as substrate layer A, sputter transparent indium tin oxide coating obtains the ITO conductive film on substrate layer A at no shadow glue covering one deck ETEE or PET plastic sheeting.Adopt five masking process, namely utilize mask, by the identical figure shifting process of multiple tracks, finish the processing of electrode matrix at the ITO conductive film that makes, obtain electrode layer A.The graphics processing shifting process of electrode matrix is made of operations such as photoetching, exposure, etching, cleaning, detections.
(4) adopt the polymerization phase disengagement method to prepare PDLC, and it is coated on the electrode layer A, adopt light (UV) curing to make its curing, obtain the electric control optical switch layer.This process has advantages such as technology is simple and easy to control, curing rate is fast, toxicity is little.
(5) transparent indium tin oxide coating obtains the ITO conductive film on the electric control optical switch layer, machined electrode matrix on the ITO conductive film, and make the direction of the electrode matrix of the direction of its electrode matrix and electrode layer A be 90 ° of angles, obtain electrode layer B;
(6) be raw material with transparent flexible insulating material such as acrylate, adopt printing technology to print out the transparent mesh-like film that thickness is the hollow out of 10～50 μ m at electrode layer B, obtain separation layer;
(7) with transparent flexible organic film such as ETEE or PET film as substrate layer C, sputter transparent indium tin oxide coating obtains the ITO conductive film on substrate layer C, machined electrode matrix on this ITO conductive film, and make the direction of its electrode matrix identical with the electrode matrix direction of electrode layer A, obtain electrode layer C, electrode layer C is sticked on the separation layer as no shadow glue with transparent insulating gel;
(9) with matt film or gloss oil with diffuse reflection function as diffuse reflector, when adopting matt film, with the transparent adhesives that insulate matt film is sticked on the substrate layer C, obtain diffuse reflector; When employing has the gloss oil of diffuse reflection function, directly apply gloss oil at substrate layer C, light (UV) solidifies then, obtains diffuse reflector; Seal with sealing compound at last.
The displaying principle of the flexible touch display screen of the printed form based on electricresistance effect of the present invention is:
The electric control optical switch layer adopts PDLC, it is that low molecular weight liquid crystal is mixed mutually with prepolymer, under certain condition through polyreaction, form micron-sized liquid crystal droplet and be evenly dispersed in the macromolecule network, the material that the dielectric anisotropy acquisition of recycling liquid crystal molecule has the electro-optic response characteristic, it operates mainly between scattering states and the clear state and has certain gray scale, under "on" position not, itself has diffusing characteristic diffuser, is creamy white, and "on" position then is transparent.Electric control optical switch layer control CMYK colored ink dot matrix is realized colored demonstration, and printing ink layer forms colour.After the electric control optical switch layer added appropriate voltage, because the aligning of liquid crystal molecule, film became transparent, shows the color of printing ink layer.For the white space of non-graphic making alive not, then liquid crystal molecule is chaotic in the electric control optical switch layer arranges, and film has certain covering power, display white.
In a word, the flexible touch display screen of the printed form based on electricresistance effect of the present invention can the perception external touch, has touch function, is easy to realize colorize; Adopt the PDLC film as electric control optical switch, do not need polaroid, the response time is short, driving voltage is low; Realize showing that with natural light it is reflective to utilize diffuse reflector to eliminate, and makes reading more comfortable as reflected light; Manufacture craft is simple, and cost is low, is fit to large-scale production.
Claims (7)
1. one kind based on the flexible touch display screen of the printed form of electricresistance effect, comprise undertake the printing of layer and the printing ink layer that is attached on the layer of undertaking the printing of, it is characterized in that: be attached with photic zone, electrode layer A, electric control optical switch layer, electrode layer B, separation layer, electrode layer C and substrate layer C from bottom to top at least from printing ink layer; The layer of undertaking the printing of is collapsible and printable flexible insulating material, printing ink layer is the CMYK colored ink dot matrix that produces at the layer of undertaking the printing of with ink printing, photic zone is the soft light material, the electric control optical switch layer is polymer dispersed liquid-crystal film, separation layer is the hollow out mesh-like film of flexible and transparent, substrate layer C is ETEE plastic sheeting or PET plastic sheeting, be attached with diffuse reflector on the substrate layer C, diffuse reflector is matt film or gloss oil with diffuse reflection function, electrode layer A, electrode layer B and electrode layer C are the ITO conductive film that is carved with electrode matrix, the electrode matrix direction of electrode layer A and electrode layer C is identical, and vertical with the direction of the electrode matrix of electrode layer B.
2. the flexible touch display screen of the printed form based on electricresistance effect according to claim 1, it is characterized in that: between photic zone and electrode layer A, be provided with the substrate layer A that is attached on the photic zone, electrode layer A is attached on the substrate layer A, and substrate layer A is ETEE plastic sheeting or PET plastic sheeting.
3. the flexible touch display screen of the printed form based on electricresistance effect according to claim 1, it is characterized in that: photic zone is ETEE plastic sheeting, PET plastic sheeting or does not have shadow glue.
4. the flexible touch display screen of the printed form based on electricresistance effect according to claim 1, it is characterized in that: separation layer is transparent acylate film.
5. according to claim 1 or the flexible touch display screen of 4 described printed forms based on electricresistance effect, it is characterized in that: the thickness of separation layer is 10 ~ 50 μ m.
6. the flexible touch display screen of the printed form based on electricresistance effect according to claim 5, it is characterized in that: the thickness of separation layer is 20 μ m.
7. the flexible touch display screen of the printed form based on electricresistance effect according to claim 1, it is characterized in that: the thickness of described display screen is no more than 5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110205113 CN102269899B (en) | 2011-07-21 | 2011-07-21 | Print type flexible contact display screen based on resistance effect |
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| CN 201110205113 CN102269899B (en) | 2011-07-21 | 2011-07-21 | Print type flexible contact display screen based on resistance effect |
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| CN102269899B true CN102269899B (en) | 2013-09-18 |
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| CN103345338B (en) * | 2013-06-17 | 2016-12-28 | 合肥京东方光电科技有限公司 | Light touch screen and preparation method thereof |
| CN105632342A (en) * | 2016-03-11 | 2016-06-01 | 南通昌荣机电有限公司 | Display panel manufacturing method |
| CN106125387B (en) * | 2016-08-23 | 2019-07-30 | 中节能万润股份有限公司 | A kind of PDLC display and PDLC electronic reader |
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| CN1672121A (en) * | 2002-08-01 | 2005-09-21 | 皇家飞利浦电子股份有限公司 | Touch sensitive display device |
| CN101248411A (en) * | 2005-10-17 | 2008-08-20 | 财团法人工业技术研究院 | Method for making a display with integrated touchscreen |
| CN101419358A (en) * | 2007-10-24 | 2009-04-29 | 比亚迪股份有限公司 | Polymers dispersed liquid crystal light valve and method for making same |
| CN201707518U (en) * | 2010-05-29 | 2011-01-12 | 比亚迪股份有限公司 | Unidirectional perspective dimmer membrane and dimmer glass |
| CN102081272A (en) * | 2009-11-30 | 2011-06-01 | 李晓 | Electronic handwriting device and manufacturing method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001290135A (en) * | 2000-01-31 | 2001-10-19 | Nitto Denko Corp | Touch type liquid crystal display device and input detecting method |
| US20070085837A1 (en) * | 2005-10-17 | 2007-04-19 | Eastman Kodak Company | Touch input device with display front |
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2011
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672121A (en) * | 2002-08-01 | 2005-09-21 | 皇家飞利浦电子股份有限公司 | Touch sensitive display device |
| CN101248411A (en) * | 2005-10-17 | 2008-08-20 | 财团法人工业技术研究院 | Method for making a display with integrated touchscreen |
| CN101419358A (en) * | 2007-10-24 | 2009-04-29 | 比亚迪股份有限公司 | Polymers dispersed liquid crystal light valve and method for making same |
| CN102081272A (en) * | 2009-11-30 | 2011-06-01 | 李晓 | Electronic handwriting device and manufacturing method thereof |
| CN201707518U (en) * | 2010-05-29 | 2011-01-12 | 比亚迪股份有限公司 | Unidirectional perspective dimmer membrane and dimmer glass |
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