CN111650796A - Flexible display screen capable of avoiding color development and fading electric attenuation - Google Patents
Flexible display screen capable of avoiding color development and fading electric attenuation Download PDFInfo
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- CN111650796A CN111650796A CN201910161564.6A CN201910161564A CN111650796A CN 111650796 A CN111650796 A CN 111650796A CN 201910161564 A CN201910161564 A CN 201910161564A CN 111650796 A CN111650796 A CN 111650796A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The flexible display screen capable of avoiding color development and fading electric attenuation comprises an electrochromic layer, an ion transport layer, an ion storage layer, a lower substrate and/or an upper substrate, and is characterized in that: an upper buffer area is arranged on the electrochromic layer, and a lower buffer area is arranged on the ion storage layer; the electrochromic layer is connected to the electrode through the upper buffer region, and the ion storage layer is connected to the electrode through the lower buffer region. According to the flexible display screen capable of avoiding color development and fading electrical attenuation, the distance between the electrochromic layer and the electrode and the distance between the ion storage layer and the electrode are greatly increased by arranging the buffer area or the isolation layer, only the particles in the electrochromic layer and the ion storage layer should be reserved, and the particles cannot be diffused to the conventional upper and lower conductive films, so that the time for color development and fading cannot be prolonged in the long-time color development and frequent and alternate color development processes, the flexible display screen has excellent fading and color development effects, and the electrical attenuation of the display screen is avoided.
Description
Technical Field
The invention relates to an electrochromic screen, in particular to a flexible display screen capable of avoiding color development and fading electric attenuation.
Background
The flexible display material can form an electrochromic screen which develops color by utilizing the change of optical absorption or reflectivity of the display material under the action of an external electric field, and the electrochromic screen can be used as an anti-counterfeiting screen and the like. The basic structure of an electrochromic screen consists of an upper electrode, a lower electrode and a working layer sandwiched between the two electrodes. For the anti-counterfeiting label with single verification, the anti-counterfeiting screen does not fade after color development due to the fact that voltage is applied for only one time, and the phenomenon that the color development and the color fading of the display screen are alternately overlapped does not exist, so that the phenomenon of color development delay does not exist in the single-time color development electrochromic screen.
However, for the electrochromic screen which needs to switch between color development and color fading, after the display screen is in the color development state for a certain period of time, the time spent on color fading and displaying is obviously prolonged in the process of electrifying the display screen to enable the display screen to fade and develop, which is called as electrical attenuation, and the reason of the electrical attenuation is caused by the fact that particles in a working layer of the display screen enter (or are called as diffusion) an upper electrode or a lower electrode in the process of electrifying the display screen to develop color, and the phenomenon that the time required by color development and color fading is prolonged is fatal to the display screen which refreshes the display screen.
Disclosure of Invention
The present invention provides a flexible display panel which can avoid the color development and fading electrical attenuation in order to overcome the disadvantages of the above technical problems.
The flexible display screen capable of avoiding color development and fading electric attenuation comprises an electrochromic layer, an ion transport layer, an ion storage layer, a lower substrate and/or an upper substrate, wherein the ion transport layer is positioned between the electrochromic layer and the ion storage layer; the method is characterized in that: an upper buffer area is arranged on the electrochromic layer, and a lower buffer area is arranged on the ion storage layer; the electrochromic layer is connected to the electrode through the upper buffer region, and the ion storage layer is connected to the electrode through the lower buffer region.
The flexible display screen capable of avoiding color development and fading electric attenuation is characterized in that the upper buffer area and the electrochromic layer, and the lower buffer area and the ion storage layer are made of the same material or different materials; under the condition of adopting the same material, the upper buffer area and the electrochromic layer as well as the lower buffer area and the ion storage layer are simultaneously prepared by adopting the same process.
The flexible display screen capable of avoiding color development and fading electric attenuation is characterized in that the upper buffer area and the lower buffer area are respectively connected with an upper electrode lead-out area and a lower electrode lead-out area, and the electrodes are connected with the upper electrode lead-out area and the lower electrode lead-out area.
The flexible display screen capable of avoiding color development and fading electric attenuation is provided with the upper substrate, and the upper substrate is made of transparent material.
The flexible display screen capable of avoiding color development and fading electric attenuation is characterized in that the electrodes are led out from the same side or two sides.
The flexible display screen capable of avoiding color development and fading electric attenuation comprises an electrochromic layer, an ion transport layer, an ion storage layer, a lower substrate and/or an upper substrate, wherein the ion transport layer is positioned between the electrochromic layer and the ion storage layer; the method is characterized in that: an upper isolation layer is arranged on the outer surface of the electrochromic layer, a lower isolation layer is arranged on the outer surface of the ion storage layer, and electrodes are connected to the upper isolation layer and the lower isolation layer respectively.
The invention has the beneficial effects that: the flexible display screen capable of avoiding color development and fading electric attenuation is characterized in that the upper buffer area and the lower buffer area are respectively arranged on the electrochromic layer and the ion storage layer, or the upper isolation layer and the lower isolation layer are respectively arranged on the outer surfaces of the electrochromic layer and the ion storage layer and are connected with the electrodes through the buffer areas and the isolation layers, so that compared with the existing electrochromic screen, the distance between the electrochromic layer and the ion storage layer and the electrodes is greatly increased, and in the process of developing color by applying voltage to the upper conducting film and the lower conducting film for a long time, particles which are supposed to be only remained in the electrochromic layer and the ion storage layer cannot be diffused into the upper conducting film or the lower conducting film in the past and remain in the upper conducting film or the lower conducting film under the action of an electric field; the electrochromic screen provided by the invention has the advantages that the time for developing and fading is not prolonged in the processes of long-time developing and frequent alternation of fading and developing, the excellent fading and developing effects are realized, and the electric attenuation of the display screen is avoided.
Drawings
FIG. 1 is a schematic view of a conventional electrochromic panel;
FIG. 2 is a schematic view showing the structure of an electrochromic panel of embodiment 1 in the present invention;
FIG. 3 is an exploded view of an electrochromic panel according to example 1 of the present invention;
FIG. 4 is a schematic diagram of an explosion structure of an electrochromic panel in example 2 of the present invention;
FIG. 5 is an exploded view of an electrochromic panel according to example 3 of the present invention;
FIG. 6 is an exploded view of an electrochromic panel according to example 4 of the present invention.
In the figure: the device comprises an upper conductive film 1, an electrochromic layer 2, an ion transport layer 3, an ion storage layer 4, a lower conductive film 5, an upper buffer region 6, a lower buffer region 7, an upper electrode leading-out region 8, a lower electrode leading-out region 9, a lower substrate 10, an upper substrate 11, an electrode 12, an upper isolation region 13, a lower isolation region 14, an upper isolation layer 15 and a lower isolation layer 16.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in fig. 1, a schematic structural diagram of a conventional electrochromic screen is shown, which is composed of an upper conductive film 1, a lower conductive film 4, an electrochromic layer 2, an ion transport layer 3, and an ion storage layer 4, wherein the electrochromic layer 2, the ion transport layer 3, and the ion storage layer 4 are sequentially disposed in front of the upper conductive film 1 and the lower conductive film 5, and the upper conductive film 1 and the lower conductive film 5 may be ITO films. The layers of the existing electrochromic screen are basically completely aligned, the electrochromic screen with the structure is applied to single-time color-developing anti-counterfeiting verification and has no problem, if the electrochromic screen is applied to occasions where color development is needed for a long time and color development and color fading are frequently alternated, the display screen can be attenuated along with overlong display time of the display screen, namely, the time required by color development and color fading is longer and longer, the defect that the display screen is fatally refreshed can result in that the display screen cannot display information.
The existing electrochromic bottle can cause electrical attenuation because of separation under the condition of long-time pressurization color development or frequent alternation of color development and color fadingThe ions of the sub transport layer 3 that enter the electrochromic layer 2 and the ion storage layer 4 should enter only the electrochromic layer 2 and the ion storage layer 4, and when they easily enter the upper conductive film 1 and the lower conductive film 5 and cannot return due to an excessively long pressing time, such as the voltage applied in fig. 1, N+、N-The positively charged ions and the negatively charged ions are respectively denoted, that is, the positively charged ions are easily introduced into the upper conductive film 1, and the negatively charged ions are easily introduced into the lower conductive film 5. The ions entering the upper and lower conductive films (1, 5) after the voltage is removed are still retained, so that the time spent on color development and color fading of the electrochromic bottle is longer and longer along with the increase and decrease of the service time of the electrochromic bottle, and the electrical attenuation of the electrochromic bottle is obvious.
Example 1, as shown in fig. 2 and 3, a schematic view of the structure and a schematic view of the explosion structure of the electrochromic screen of example 1 are respectively given, and the electrochromic screen shown is composed of an electrochromic layer 2, an ion transport layer 3, an ion storage layer 5, and a lower substrate 10 and/or an upper substrate 11, and at least one of the upper substrate 11 and the lower substrate 10 should be provided so that the respective layers are provided in order on the upper substrate 11 or the lower substrate 10. If the upper substrate 11 is provided, a transparent material should be used for the upper substrate 11 so that the color change of the electrochromic layer 2 can be observed from the outside.
The electrochromic screen in this embodiment omits the upper conductive film 1 and the lower conductive film 5, and solves the technical problem of the ions entering the upper conductive film 1 and the lower conductive film 5. Because the upper conductive film 1 and the lower conductive film are not arranged any more, but voltage is still required to be applied between the electrochromic layer 2 and the ion storage layer 4, in the embodiment, the electrochromic layer 2 and the ion storage layer 4 are both extended, the extended parts of the electrochromic layer and the ion storage layer are respectively an upper buffer area 6 and a lower buffer area 7, and the upper buffer area 6 and the lower buffer area 7 are simultaneously manufactured by the same material and the same process as the electrochromic layer 2 and the ion storage layer 4.
The upper buffer area 6 and the lower buffer area 7 are respectively connected with an upper electrode lead-out area 8 and a lower electrode lead-out area 9, the upper electrode lead-out area 8 and the lower electrode lead-out area 9 are respectively connected with two electrodes 12 of a power supply, generally, the thicknesses of the electrochromic layer 2 and the ion storage layer 4 are about 10 micrometers, and the upper buffer area 6 and the lower buffer area 7 can be set to be between 100 micrometers and 1mm, so that the distance between the upper electrode lead-out area 8 (or the lower electrode lead-out area 9) and the ion storage layer 4 is 10 to 100 times of the distance between the upper conductive film 1 (or the lower conductive film 5) and the ion storage layer 4 in the conventional electrochromic screen, charged ions are effectively prevented from entering the upper electrode lead-out area 8 and the lower electrode lead-out area 9, and the electrochromic screen in the embodiment 1 is ensured to have good electrical attenuation prevention performance.
Example 2, as shown in fig. 4, an exploded structure diagram of the electrochromic panel of example 2 of the present invention is shown, and in this example, except that the leading ends of the electrodes 12 on the electrochromic layer 2 and the ion storage layer 4 are located on both sides, the remaining structures are the same as those in example 1, and this form of the electrochromic panel can also avoid electrical degradation of color development and color fading.
As shown in table 1, the time change required for the fading-color development change after a certain period of color development between the conventional electrochromic panel and the electrochromic panel in example 1 is shown:
TABLE 1
Therefore, compared with the existing display screen, the display screen of the invention still has shorter time for color fading and display change after long-time pressurized color development, and meets the requirements of the display screen needing long-time color development or needing color development and color fading to be changed alternately.
Claims (6)
1. A flexible display screen capable of avoiding color development and fading electric attenuation comprises an electrochromic layer (2), an ion transport layer (3), an ion storage layer (4), a lower substrate (10) and/or an upper substrate (11), wherein the ion transport layer is positioned between the electrochromic layer and the ion storage layer; the method is characterized in that: an upper buffer area (6) is arranged on the electrochromic layer (2), and a lower buffer area (7) is arranged on the ion storage layer (4); the electrochromic layer is connected to the electrode (12) via an upper buffer region, and the ion storage layer is connected to the electrode via a lower buffer region.
2. The flexible display screen of claim 1, wherein the flexible display screen is capable of avoiding color development and fading electrical degradation, and wherein: the upper buffer area (6) and the electrochromic layer (2) as well as the lower buffer area (7) and the ion storage layer (4) are made of the same material or different materials; under the condition of adopting the same material, the upper buffer area and the electrochromic layer as well as the lower buffer area and the ion storage layer are simultaneously prepared by adopting the same process.
3. A flexible display screen capable of avoiding electric fading and color development according to claim 1 or 2, wherein: the upper buffer area (6) and the lower buffer area (7) are respectively connected with an upper electrode leading-out area (8) and a lower electrode leading-out area (9), and the electrode (12) is connected with the upper electrode leading-out area and the lower electrode leading-out area.
4. A flexible display screen capable of avoiding electric fading and color development according to claim 1 or 2, wherein: in the case where the upper substrate (11) is provided, the upper substrate is a transparent material.
5. A flexible display screen capable of avoiding electric fading and color development according to claim 1 or 2, wherein: the electrodes (12) are led out from the same side or two sides.
6. A flexible display screen capable of avoiding color development and fading electric attenuation comprises an electrochromic layer (2), an ion transport layer (3), an ion storage layer (4), a lower substrate (10) and/or an upper substrate (11), wherein the ion transport layer is positioned between the electrochromic layer and the ion storage layer; the method is characterized in that: an upper isolation layer (15) is arranged on the outer surface of the electrochromic layer (2), a lower isolation layer (16) is arranged on the outer surface of the ion storage layer (4), and the upper isolation layer and the lower isolation layer are respectively connected with an electrode (12).
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| CN201910161564.6A CN111650796B (en) | 2019-03-04 | 2019-03-04 | Flexible display screen capable of avoiding color development and fading electric attenuation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910161564.6A CN111650796B (en) | 2019-03-04 | 2019-03-04 | Flexible display screen capable of avoiding color development and fading electric attenuation |
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| CN111650796B CN111650796B (en) | 2022-03-25 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4773741A (en) * | 1987-04-09 | 1988-09-27 | Central Glass Company, Limited | Electrochromic display device having auxiliary electrode |
| US20060262377A1 (en) * | 2005-05-19 | 2006-11-23 | Kyoko Kojima | Electrochromic device |
| US20090323161A1 (en) * | 2008-06-30 | 2009-12-31 | Eugene Anthony Fuss | Electrical characteristics of electrochromic devices |
| CN101852960A (en) * | 2010-05-14 | 2010-10-06 | 马鞍山市盛宁高分子材料科技有限公司 | Full-solid state macromolecule controllable electrochromism flexible film device and manufacturing method thereof |
| CN104698715A (en) * | 2013-12-04 | 2015-06-10 | 珠海兴业绿色建筑科技有限公司 | All-solid electrochromic device |
| US20160026055A1 (en) * | 2014-07-23 | 2016-01-28 | Kinestral Technologies, Inc. | Process for preparing multi-layer electrochromic stacks |
-
2019
- 2019-03-04 CN CN201910161564.6A patent/CN111650796B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4773741A (en) * | 1987-04-09 | 1988-09-27 | Central Glass Company, Limited | Electrochromic display device having auxiliary electrode |
| US20060262377A1 (en) * | 2005-05-19 | 2006-11-23 | Kyoko Kojima | Electrochromic device |
| US20090323161A1 (en) * | 2008-06-30 | 2009-12-31 | Eugene Anthony Fuss | Electrical characteristics of electrochromic devices |
| CN101852960A (en) * | 2010-05-14 | 2010-10-06 | 马鞍山市盛宁高分子材料科技有限公司 | Full-solid state macromolecule controllable electrochromism flexible film device and manufacturing method thereof |
| CN104698715A (en) * | 2013-12-04 | 2015-06-10 | 珠海兴业绿色建筑科技有限公司 | All-solid electrochromic device |
| US20160026055A1 (en) * | 2014-07-23 | 2016-01-28 | Kinestral Technologies, Inc. | Process for preparing multi-layer electrochromic stacks |
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