CN102269889B - Printed flexible display screen - Google Patents
Printed flexible display screen Download PDFInfo
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- CN102269889B CN102269889B CN201110205252.4A CN201110205252A CN102269889B CN 102269889 B CN102269889 B CN 102269889B CN 201110205252 A CN201110205252 A CN 201110205252A CN 102269889 B CN102269889 B CN 102269889B
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Abstract
The invention discloses a printed flexible display screen. The printed flexible display screen comprises a printed layer and a printing ink layer adhered to the printed layer, at least a transparent layer, an electrode layer A, an electric control photoswitch layer and an electrode layer B are adhered to the printing ink layer from bottom to top; the printed layer is made of a foldable and printable flexible insulating material, the printing ink layer is a CMYK (cyan, magenta, yellow and black) ink dot matrix printed on the printed layer, the transparent layer is made of a flexible transparent material, the electric control photoswitch layer is a PDLC (polymer dispersed liquid crystal) film, the electrode layer A and the electrode layer B are both ITO (indium tin oxide) conductive film layers respectively etched with an electrode matrix, and the electrode matrixes of the electrode layer A and the electrode layer B are vertical to each other. The display screen is easy to colorize, has the advantages of short response time, low driving voltage and low production cost and is suitable for reading with human eyes and in the manufacturing process is simple.
Description
Technical field
The present invention relates to a kind of print-type flexible display screen, belong to print field, also belong to electronic applications.
Background technology
Current display technique can be divided into two large classes: a class is that papery shows, its principal feature is: by reflect ambient light, carry out displaying contents, be easy to colored demonstration, and angle of visibility large (approaching 180 °), medium is soft.Another kind of is the electronical displays such as CRT, LCD, LED, and its principal feature is: information can fast refresh, relies on display self internal illumination to carry out displaying contents, need to consume more electric energy during work, easily makes people tired during reading, 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) nearly ten years, the advantage of attempting to overcome the shortcoming of aforementioned two class display techniques and retaining them, though new display have flexible media, can quick automatically controlled displaying contents, by reflect ambient light demonstration, low energy consumption, portable these features.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 the international corporations such as E-Ink, Philip, IBM, Bell Laboratory faster in the world, and its displaying principle is that electric globule (being placed in microcapsules or micro-cup) based on different colours (being white and the black at present substantially) electrophoresis under electric field action moves sight line the reflection of external ambient light is presented to two kinds of diverse colors.Although at present the flexible display screen based on electrophoretic has been obtained certain progress, also there is response speed slow (hundreds of millisecond), be difficult to realize the series of problems such as colored (will realize colour with different optical filters), production cost height and need to solve.
Summary of the invention
The object of the invention is to make up the deficiency of prior art, provide a kind of and be easy to colorize, fast response time, low, the applicable human eye reading of driving voltage, and production cost is low, the relatively simple print-type flexible display screen of manufacturing process.
Realizing the technical scheme that the object of the invention adopts is:
A print-type flexible display screen, comprises and undertakes the printing of layer and be attached to the printing ink layer of undertaking the printing of on layer, from printing ink layer, is at least attached with from bottom to top photic zone, electrode layer A, electric control optical switch layer and electrode layer B; Undertake the printing of layer for collapsible and printable flexible insulating material, printing ink layer is the CMYK colored ink dot matrix producing on the layer of undertaking the printing of with ink printing, photic zone is soft light material, electric control optical switch layer is polymer dispersed liquid-crystal film, electrode layer A and electrode layer B are the ITO conductive film that is carved with electrode matrix, and the electrode matrix direction of electrode layer A and electrode layer B is vertical.
On described electrode layer B, be attached with diffuse reflector, diffuse reflector is matt film or the gloss oil with diffuse reflection function.
On described diffuse reflector, be attached with protective seam.
On described electrode layer B, be attached with protective seam.
Protective seam is the film that protection display screen is avoided damage, preferably acrylic resin film or aluminum oxide film.
Described photic zone is ETEE plastic sheeting, PET plastic sheeting or without shadow glue.
Between described photic zone and electrode layer A, be provided with the substrate layer being attached on photic zone, electrode layer A is attached on substrate layer, and substrate layer is ETEE plastic sheeting or PET plastic sheeting.
The thickness of described print-type flexible display screen is no more than 5mm.
Compared with prior art, the present invention has the following advantages:
1, print-type flexible display screen provided by the invention adopts printing-ink technology as black and white and the colored basis showing, adopts fm screening mode ripe in printing technology, can obtain higher resolution, improves output accuracy.Utilize the color vision mixing principle in printing simultaneously, by the stack of printing dot matrix reflected light, obtain various colors, the colored solution technology showing is comparatively ripe, and implementation method is effectively simple and gradation is abundant.
2, display screen provided by the invention is to using Polymer Dispersed Liquid Crystal (PDLC) film as electric control optical switch, within response time can shorten to 40ms, driving voltage can be reduced to 25v, is obviously better than the E-INK technology (response time is about 150ms, driving voltage is about 90v) of current main flow.In addition, PDLC film does not need polaroid, with solid film form, exists and preparation technology easily realizes, and 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 applicable to large-scale production.And using electro-optic crystal as the display screen of electric control optical switch, and although the response time is short, driving voltage higher (being about 443v), and the complicated process of preparation of solid film, cost is high.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 at present TFT substrate as the display screen of electrode, because TFT substrate is a thin film transistor (TFT), not only complex structure, cost are high, and are mainly applicable to the transmissive operation mode of backlight.And display screen of the present invention is to adopt ITO conductive film as control electrode, structure is more simple, cost is low, and by natural reflection of light, realize demonstration, do not need special light source, more meet human eye reading habit, in addition the gloss oil that adopts matt film or have diffuse reflection function is as diffuse reflector, can eliminate reflectively, improve contrast, improve and read comfort level.
4, each layer of the present invention adopts film, and the integral thickness of display screen is no more than 5mm, make display screen quality light, be easy to flexibility.
Accompanying drawing explanation
The structural representation of the print-type flexible display screen that Fig. 1 provides for embodiment 1.
Embodiment
Below by specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to following examples.
Embodiment 1
As shown in Figure 1; the bottom of the print-type flexible display screen that the present embodiment provides is the layer of undertaking the printing of; printing ink layer is attached to undertakes the printing of on layer; from printing ink layer, be attached with successively from bottom to top photic zone, electrode layer A, electric control optical switch layer, electrode layer B, diffuse reflector and protective seam, 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 soft light material, as ETEE (ETEE is the multipolymer of tetrafluoroethene and ethene) plastic sheeting, PET plastic sheeting or without shadow glue, for increasing the distance between printing ink layer and PDLC, make this distance can guarantee that not under "on" position, printing ink layer is hidden light tight completely.
Electrode layer A and B are the ITO conductive film that is carved with electrode matrix.When photic zone is during without shadow glue, between photic zone and electrode layer A, add one deck substrate layer, as the ITO conductive film of electrode layer A, be attached on substrate layer, substrate layer is attached on photic zone, and substrate layer adopts ETEE or PET plastic sheeting; When photic zone is ETEE or PET plastic sheeting, as the ITO conductive film of electrode layer A, be attached directly on photic zone.In the present embodiment, photic zone adopts ETEE or PET plastic sheeting, and electrode layer A is attached on photic zone.ITO conductive film as electrode layer B is the ITO coating being attached on electric control optical switch layer, and the electrode matrix direction of electrode layer A and electrode layer B is vertical, and in the present embodiment, the electrode matrix of electrode layer A is X-direction, and the electrode matrix of electrode layer B is Y direction.
Electric control optical switch layer adopts Polymer Dispersed Liquid Crystal (PDLC) film, this layer is the display control switch of display screen, realizes colored demonstration, in general by the CMYK colored ink dot matrix of controlling on printing ink layer, electric control optical switch layer is thicker, and contrast is higher.
Diffuse reflector adopts matt film or has the gloss oil of diffuse reflection function, adopts matt film in the present embodiment, and this layer is used for eliminating reflective, improves the reading effect of display screen.
Protective seam adopts protection display screen to avoid the film that outside scratch, steam, oxygen and illumination etc. damage, such as acrylic resin film, aluminum oxide film etc.
Embodiment 2
The bottom of the print-type flexible display screen that the present embodiment provides is the layer of undertaking the printing of, printing ink layer is attached to undertakes the printing of on layer, from printing ink layer, be attached with successively from bottom to top photic zone, substrate layer, electrode layer A, electric control optical switch layer, electrode layer B and diffuse reflector, the thickness of this display screen is no more than 5mm.In the present embodiment, photic zone adopts without shadow glue, and diffuse reflector adopts the gloss oil with diffuse reflection function, and other each layer material used is identical with embodiment 1.
Embodiment 3
The print-type flexible display screen bottom that the present embodiment provides is the layer of undertaking the printing of; printing ink layer is attached to undertakes the printing of on layer; from printing ink layer, be attached with successively from bottom to top photic zone, electrode layer A, electric control optical switch layer, electrode layer B and protective seam, the thickness of this display screen is no more than 5mm.Each layer of material used is identical with embodiment 1.
The preparation process of print-type flexible display screen of the present invention is as follows:
(1) employing intaglio printing mode printing-ink on the layer of undertaking the printing of, produces CMYK colored ink dot matrix, obtains being attached with the layer of undertaking the printing of of printing ink layer, and its technological process is: the aftertreatment of flexible base, board preparation → adjustment of the printing plate → adjustment rule → formal printing → seal.The automaticity of intaglio press is high, and plate-making quality is good, and technological operation is simple.
(2) on the layer of undertaking the printing of, coating flexible light transmissive material, as ETEE, PET plastic sheeting or without shadow glue, obtains photic zone.
(3), when photic zone is ETEE or PET plastic sheeting, on photic zone, sputter transparent indium tin oxide coating obtains ITO conductive film; When photic zone is during without shadow glue, cover one deck ETEE or PET plastic sheeting on without shadow glue as substrate layer, on substrate layer, sputter transparent indium tin oxide coating obtains ITO conductive film; Adopt five masking process, utilize mask, by the identical figure transfer process of multiple tracks, on the ITO conductive film making, complete the processing of electrode matrix, obtain electrode layer A.Figure transfer process consists of operations such as photoetching, exposure, etching, cleaning, detections.
(4) adopt polymerization phase disengagement method to prepare PDLC, and it is upper to be coated in electrode layer A, adopts light (UV) curing that it is solidified, obtain electric control optical switch layer.This process has the advantages such as technique is simple and easy to control, curing rate is fast, toxicity is little.
(5) sputter transparent indium tin oxide coating on electric control optical switch layer, obtains ITO conductive film, machined electrode matrix on ITO conductive film, and make the direction of the electrode matrix of its matrix directions and electrode layer A be 90 ° of angles, obtain electrode layer B.
(6) gloss oil of usining matt film or having diffuse reflection function, as diffuse reflector, when adopting matt film, as without shadow glue, matt film sticked on to electrode layer B above, obtains diffuse reflector with the transparent bonding agent of insulation; When employing has the gloss oil of diffuse reflection function, directly on electrode layer B, apply gloss oil, then light (UV) solidifies, and obtains diffuse reflector.
(7) adopt protection display screen avoid inorganics film that outside scratch, steam, oxygen and illumination etc. damage or organic polymer film for example acrylic resin film, aluminum oxide film as protective seam; with the transparent bonding agent of insulation, as without shadow glue, protective seam sticked on diffuse reflector, finally with sealing compound, seal.
The displaying principle of print-type flexible display screen provided by the invention is:
The material of electric control optical switch layer adopts PDLC film, it is that low molecular weight liquid crystal is mixed mutually with prepolymer, under certain condition through polyreaction, forming micron-sized liquid crystal droplet is evenly dispersed in macromolecule network, the dielectric anisotropy of recycling liquid crystal molecule obtains the material with electro-optic response characteristic, it operates mainly between scattering states and clear state and has certain gray scale, electric control optical switch layer is under "on" position not, itself has diffusing characteristic diffuser, be creamy white, "on" position is transparent.Electric control optical switch layer is controlled CMYK colored ink dot matrix and is realized colored demonstration, and printing ink layer forms colour.Electric control optical switch layer is added after appropriate voltage, and due to aligning of liquid crystal molecule, film becomes transparent, shows the color of printing ink layer; For the white space of non-graphic making alive not, in electric-controlled switch layer, liquid crystal molecule is chaotic arranges, and film has certain covering power, display white.
In a word, print-type flexible display screen of the present invention, owing to adopting printing-ink technology as black and white and the colored basis showing, adopts fm screening mode ripe in printing technology, is conducive to obtain higher resolution, improves output accuracy; Using PDLC film as electric control optical switch, do not need polaroid, with solid film form, exist and preparation technology easily realizes, be applicable to the technological process of roll-to-roll (Roll-to-Roll) continuity, the response time is short, and driving voltage is low, manufacture craft is simple, and production cost is low; By natural reflection of light, realize demonstration, adopt diffuse reflector, can eliminate reflectively, improve the contrast of display screen, improve and read comfort level.
Claims (3)
1. a print-type flexible display screen, comprises and undertakes the printing of layer and be attached to the printing ink layer of undertaking the printing of on layer, it is characterized in that: from printing ink layer, be at least attached with from bottom to top photic zone, electrode layer A, electric control optical switch layer and electrode layer B, undertake the printing of layer for collapsible and printable flexible insulating material, printing ink layer is the CMYK colored ink dot matrix producing on the layer of undertaking the printing of with ink printing, photic zone is soft light material, be specially ETEE plastic sheeting, PET plastic sheeting or without shadow glue, between photic zone and electrode layer A, be provided with the substrate layer being attached on photic zone, electrode layer A is attached on substrate layer, substrate layer is ETEE plastic sheeting or PET plastic sheeting, electric control optical switch layer is polymer dispersed liquid-crystal film, electrode layer A and electrode layer B are the ITO conductive film that is carved with electrode matrix, the electrode matrix direction of electrode layer A and electrode layer B is vertical, on electrode layer B, be attached with diffuse reflector, diffuse reflector is matt film or the gloss oil with diffuse reflection function, the thickness of display screen is no more than 5mm.
2. print-type flexible display screen according to claim 1, is characterized in that: on diffuse reflector, be attached with protective seam, protective seam is for protecting display screen to avoid the film of damage.
3. print-type flexible display screen according to claim 2, is characterized in that: protective seam is acrylic resin film or aluminum oxide film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110205252.4A CN102269889B (en) | 2011-07-21 | 2011-07-21 | Printed flexible display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110205252.4A CN102269889B (en) | 2011-07-21 | 2011-07-21 | Printed flexible display screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102269889A CN102269889A (en) | 2011-12-07 |
| CN102269889B true CN102269889B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110205252.4A Expired - Fee Related CN102269889B (en) | 2011-07-21 | 2011-07-21 | Printed flexible display screen |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902098A (en) * | 2012-09-28 | 2013-01-30 | 北京三五九投资有限公司 | Color-grade-adjustable printed form flexible display screen |
| CN102890371B (en) * | 2012-09-28 | 2016-01-20 | 北京三五九投资有限公司 | Reflected displaying device |
| CN102902097B (en) * | 2012-09-28 | 2015-05-13 | 北京三五九投资有限公司 | Printing type soft display screen based on aluminum coated layer |
| CN103033968B (en) * | 2013-01-05 | 2015-07-22 | 北京三五九投资有限公司 | Method for preparing flexible display module based on PDLC |
| CN109445520B (en) * | 2018-10-22 | 2022-05-17 | Oppo（重庆）智能科技有限公司 | Cover plate, display screen assembly, electronic equipment and manufacturing method |
| CN113325622B (en) * | 2021-05-14 | 2022-07-22 | 北京科技大学 | Polymer liquid crystal film with customized colorful patterns and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069505Y (en) * | 2007-07-13 | 2008-06-04 | 比亚迪股份有限公司 | Dual-face display |
| CN101290448A (en) * | 2008-06-03 | 2008-10-22 | 武汉大学 | Flexible electric shock window type electronic paper |
| CN201707518U (en) * | 2010-05-29 | 2011-01-12 | 比亚迪股份有限公司 | Unidirectional perspective dimmer membrane and dimmer glass |
-
2011
- 2011-07-21 CN CN201110205252.4A patent/CN102269889B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069505Y (en) * | 2007-07-13 | 2008-06-04 | 比亚迪股份有限公司 | Dual-face display |
| CN101290448A (en) * | 2008-06-03 | 2008-10-22 | 武汉大学 | Flexible electric shock window type electronic paper |
| 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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| CN102269889A (en) | 2011-12-07 |
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Granted publication date: 20140402 Termination date: 20190721 |