CN202177762U - Printing type flexible display screen based on double-layered PDLC film - Google Patents
Printing type flexible display screen based on double-layered PDLC film Download PDFInfo
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- CN202177762U CN202177762U CN2011202588363U CN201120258836U CN202177762U CN 202177762 U CN202177762 U CN 202177762U CN 2011202588363 U CN2011202588363 U CN 2011202588363U CN 201120258836 U CN201120258836 U CN 201120258836U CN 202177762 U CN202177762 U CN 202177762U
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Abstract
The utility model discloses a printing type flexible display screen based on double-layered PDLC (Polymer Dispersed Liquid Crystal) film. The flexible display screen comprises a printing layer and a printing ink layer adhered thereon; at least an euphotic layer, an electrode layer A, an electronically controlled optical switch layer, an electrode layer B, another electronically controlled optical switch layer, and an electrode layer C are adhered on the printing ink layer from bottom to top; the electronically controlled optical switch layers are PDLC thin film; and the electrode layer A, the electrode layer B, and the electrode layer C are all ITO conductive thin film carved with electrode matrices, wherein the electrode matrices of the electrode layer A and the electrode layer C are the same in direction, and the direction of the electrode matrices of the electrode layer A and the electrode layer C is perpendicular to that of the electrode layer B. The display screen provided by the utility model has a higher contrast gradient, short responding time, low driving voltage, low manufacturing cost, and simple manufacture process, is easy to realize colorization, and is more suitable for human-eye reading and large-scale batch production.
Description
Technical field
The utility model relates to a kind of printed form flexible display screen based on double-deck pdlc film, belongs to print field, also belongs to electronic applications.
Background technology
Present display technique can be divided into two big types: one type is that papery shows that its principal feature is: come displaying contents through reflect ambient light, be easy to colored the demonstration, and angle of visibility big (near 180 °), medium is soft.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 the people tired during reading easily, and medium is not soft.
People are putting forth effort the exploitation type reflective flexible display of paper (being commonly called as Electronic Paper) over past ten years; The advantage of attempting to overcome the shortcoming of aforementioned two types of display techniques and keeping them, though new display have flexible media, can quick automatically controlled displaying contents, through 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, AT&T Labs 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 purpose of the utility model is to remedy the deficiency of prior art, and a kind of printed form flexible display screen based on double-deck pdlc film is provided, and this display screen has double-deck electric control optical switch; Two-layer electric control optical switch is PDLC (PDLC) film; Improved contrast, had and be easy to colorize, manufacturing process is simple, cost is low advantage, and this display screen is light source with the natural light; Form colour vision through reflected light, be more suitable for reading in human eye.
For realizing above-mentioned purpose, the technical scheme that the utility model adopted is:
A kind of printed form flexible display screen based on double-deck pdlc film; Comprise undertake the printing of the layer and attached to the printing ink layer on the layer of undertaking the printing of, be attached with photic zone, electrode layer A, electric control optical switch layer, electrode layer B, electric control optical switch layer and electrode layer C from bottom to top at least from printing ink layer; The electric control optical switch layer is the PDLC film, and electrode layer A, electrode layer B and electrode layer C are the ITO conductive film that is carved with electrode matrix, and 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 said electrode layer C, diffuse reflector is matt film or the gloss oil layer with diffuse reflection function.
Saidly between photic zone and electrode layer A, be provided with attached to the substrate layer on the photic zone, electrode layer A is attached on the substrate layer, and substrate layer is ETEE plastic film layers or PET plastic film layers.
The said layer of undertaking the printing of is collapsible and printable flexible insulating material.
Said printing ink layer is for producing the printing ink layer of CMYK colored ink dot matrix on the layer of undertaking the printing of with ink printing.
Said photic zone is ETEE plastic film layers, PET plastic film layers or does not have the shadow glue-line.
The thickness of said display screen is no more than 5mm.
Compared with prior art, the advantage of the utility model is:
1, the display screen that provides of the utility model 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 through 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, the display screen that provides of the utility model is as electric control optical switch with PDLC (PDLC) film; Response time can shorten within the 40ms; Driving voltage can be reduced to 25v, obviously is superior to 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 the easy realization of preparation technology 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, and cost is high.By comparison, the display screen of the utility model all has clear superiority at aspects such as driving voltage, manufacture craft and production costs.
3, in general, the electric control optical switch layer is thick more, and contrast is high more, but required thereupon driving voltage also will increase, and transmittance can descend thereupon.The display screen of the utility model has double-deck electric control optical switch, and two-layer electric control optical switch is PDLC (PDLC) film, adopts this double-deck pdlc film structure; Not only improved contrast through increasing the electric-controlled switch layer thickness; Also avoided owing to increase the negative effect that the electric control optical switch layer thickness is brought, because, though increased the thickness of electric-controlled switch layer; But owing to increased a common electrode layer; Electric-controlled switch layer thickness between drive electrode does not change, so driving voltage is constant, and transmittance does not have obvious decline yet.Compare with the display screen that has only the individual layer electric control optical switch that adopts pdlc film, the contrast of the display screen of the utility model can improve more than 10%.
4, adopt the display screen of TFT substrate as electrode at present, because the TFT substrate is a thin film transistor (TFT), not only complex structure, cost are high, and mainly are applicable to the transmissive operation mode of backlight.And the display screen of the utility model is to adopt the ITO conductive film as control electrode, and structure is more simple, and cost is low; Realize showing through reflecting of natural 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.
5, each layer of the utility model is film, and the thickness of display screen is no more than 5mm, makes the display screen light weight, is easy to flexibility.
Description of drawings
The structural representation that Fig. 1 provides for embodiment 1 based on the printed form flexible display screen of double-deck pdlc film.
Embodiment
Through accompanying drawing and specific embodiment the utility model is further described below.
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, electric control optical switch layer, electrode layer C and diffuse reflector from the bottom to top successively from printing ink layer, the thickness of display screen is no more than 5mm.
The layer of undertaking the printing of adopts collapsible and printable flexible insulating material, like 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; Like ETEE (ETEE is the multipolymer of tetrafluoroethene and ethene) plastic sheeting, PET plastic sheeting or there is not shadow glue; Being used to increases the distance between printing ink layer and the ground floor electric control optical switch layer (the electric control optical switch layer here is meant the electric control optical switch layer between electrode layer A and the electrode layer B), makes this distance can guarantee that not printing ink layer is covered in 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, between electrode layer A and photic zone, add one deck attached to the substrate layer on the photic zone, attached on the substrate layer, electrode layer A is attached on the substrate layer as the ITO conductive film of electrode layer A, and substrate layer is ETEE 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 is ETEE or PET in the present embodiment, and electrode layer A is attached on the photic zone.As the ITO conductive film of electrode layer B and electrode layer C respectively attached on the two-layer electric control optical switch layer.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 a Y direction.Electrode layer B is as the common electrode layer of electrode layer A and electrode layer C, and when electrode layer B added high voltage, then electrode layer A and C added low-voltage simultaneously, and two-layer up and down electric control optical switch layer is worked simultaneously; When electrode layer B added low-voltage, then electrode layer A and C added high voltage simultaneously, and two-layer up and down electric control optical switch layer is worked simultaneously.
Two-layer electric control optical switch layer all adopts the PDLC film, and the electric control optical switch layer is the display control switch of display screen, realizes colored the demonstration through the CMYK colored ink dot matrix on the control printing ink layer.In general, the electric control optical switch layer is thick more, and contrast is high more, but required thereupon driving voltage also will increase, and transmittance can descend thereupon.But the display screen of the utility model has double-deck electric control optical switch; Though increased the thickness of electric-controlled switch layer, owing to increased a common electrode layer, the electric-controlled switch layer thickness between drive electrode does not change; Therefore driving voltage is constant, and transmittance does not have obvious decline yet.Compare with the display screen of the individual layer electric control optical switch that adopts pdlc film, the contrast of the display screen of the utility model can improve more than 10%.
The gloss oil that diffuse reflector adopts matt film or has the diffuse reflection function, this layer is used to eliminate reflective, improves the reading effect of display screen.
Embodiment 2
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, substrate layer, electrode layer A, electric control optical switch layer, electrode layer B, electric control optical switch layer and electrode layer C from the bottom to top successively from printing ink layer, the thickness of display screen is no more than 5mm.Photic zone is no shadow glue in the present embodiment, and other each layer material therefors are identical with embodiment 1.
The preparation method based on the printed form flexible display screen of double-deck pdlc film of the utility model is following:
(1) 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;
(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, and machined electrode matrix on this ITO conductive film obtains electrode layer A; When photic zone during for no shadow glue, covering one deck ETEE or PET plastic sheeting are as substrate layer A on no shadow glue, and sputter transparent indium tin oxide coating obtains the ITO conductive film on substrate layer A, and machined electrode matrix on this ITO conductive film obtains electrode layer A;
(4) PDLC is coated in electrode layer A and upward obtains the electric control optical switch layer after the curing;
(5) sputter transparent indium tin oxide coating on the electric control optical switch layer obtains the ITO conductive film, machined electrode matrix on the ITO conductive film, and make the direction of electrode matrix of direction and the electrode layer A of its electrode matrix be 90 ° of angles, obtain electrode layer B;
(6) on electrode layer B, apply PDLC, obtain another layer electric control optical switch layer after the curing;
(7) sputter transparent indium tin oxide coating on the electric control optical switch layer that step (6) obtains; Obtain the ITO conductive film; Machined electrode matrix on the ITO conductive film, and make the direction of its electrode matrix identical with the direction of the electrode matrix of electrode layer A, obtain electrode layer C;
(8) with matt film or gloss oil with diffuse reflection function as diffuse reflector, when adopting matt film, matt film is sticked on the electrode layer C with the transparent adhesives of insulation, obtain diffuse reflector; When employing has the gloss oil of diffuse reflection function, directly on electrode layer C, apply gloss oil, obtain diffuse reflector after the curing; Seal with sealing compound at last.
The displaying principle based on the printed form flexible display screen of double-deck pdlc film of the utility model is:
The electric control optical switch layer adopts the PDLC film, and it is that low molecular weight liquid crystal is mixed with prepolymer mutually, under certain condition through polyreaction; Form micron-sized liquid crystal droplet and be evenly dispersed in the macromolecule network, utilize the dielectric anisotropy of liquid crystal molecule to obtain the material with electro-optic response characteristic again, 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-controlled switch layer arranges, and film has certain covering power, show white.
Claims (7)
1. printed form flexible display screen based on double-deck pdlc film; Comprise undertake the printing of the layer and attached to the printing ink layer 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, electric control optical switch layer and electrode layer C from bottom to top at least from printing ink layer; The electric control optical switch layer is the PDLC film, and electrode layer A, electrode layer B and electrode layer C are the ITO conductive film that is carved with electrode matrix, and 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 printed form flexible display screen based on double-deck pdlc film according to claim 1 is characterized in that: be attached with diffuse reflector on the electrode layer C, diffuse reflector is matt film or the gloss oil layer with diffuse reflection function.
3. the printed form flexible display screen based on double-deck pdlc film according to claim 1; It is characterized in that: between photic zone and electrode layer A, be provided with attached to the substrate layer on the photic zone; Electrode layer A is attached on the substrate layer, and substrate layer is ETEE plastic film layers or PET plastic film layers.
4. the printed form flexible display screen based on double-deck pdlc film according to claim 1 is characterized in that: the layer of undertaking the printing of is collapsible and printable flexible insulating material.
5. the printed form flexible display screen based on double-deck pdlc film according to claim 1 is characterized in that: printing ink layer is for producing the printing ink layer of CMYK colored ink dot matrix on the layer of undertaking the printing of with ink printing.
6. the printed form flexible display screen based on double-deck pdlc film according to claim 1 is characterized in that: photic zone is ETEE plastic film layers, PET plastic film layers or does not have the shadow glue-line.
7. the printed form flexible display screen based on double-deck pdlc film according to claim 1, it is characterized in that: the thickness of said display screen is no more than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202588363U CN202177762U (en) | 2011-07-21 | 2011-07-21 | Printing type flexible display screen based on double-layered PDLC film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202588363U CN202177762U (en) | 2011-07-21 | 2011-07-21 | Printing type flexible display screen based on double-layered PDLC film |
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| Publication Number | Publication Date |
|---|---|
| CN202177762U true CN202177762U (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202588363U Expired - Fee Related CN202177762U (en) | 2011-07-21 | 2011-07-21 | Printing type flexible display screen based on double-layered PDLC film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015032200A1 (en) * | 2013-09-05 | 2015-03-12 | 华为技术有限公司 | All-solid-state electrochromic composite device and manufacturing method therefor |
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2011
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015032200A1 (en) * | 2013-09-05 | 2015-03-12 | 华为技术有限公司 | All-solid-state electrochromic composite device and manufacturing method therefor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20190721 |
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| CF01 | Termination of patent right due to non-payment of annual fee |