CN219609398U - Electronic ink display device - Google Patents
Electronic ink display device Download PDFInfo
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- CN219609398U CN219609398U CN202320125331.2U CN202320125331U CN219609398U CN 219609398 U CN219609398 U CN 219609398U CN 202320125331 U CN202320125331 U CN 202320125331U CN 219609398 U CN219609398 U CN 219609398U
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Abstract
An electronic ink display device comprises an upper transparent electrode layer, an electronic ink layer, a graphic electrode layer and a wire layer; the upper transparent electrode layer comprises an upper transparent electrode; the pattern electrode layer comprises 1 or 2 or more pattern electrode plates, the wire layer comprises 1 or 2 or more pattern electrode wires, and the pattern electrode wires are connected with the pattern electrode plates in an electric signal manner; and a voltage signal is introduced or cut off to the pattern electrode through the pattern electrode lead, an electric field is formed between the pattern electrode sheet and the upper transparent electrode, and the electric field drives the electronic ink layer between the upper transparent electrode and the pattern electrode sheet to change and display different colors. The pattern electrode layer is directly connected to the fixed lead, the display device is simple and low in cost, the switching of a single pattern electrode can drive the color switching of a large area, a complex TFT circuit is not needed, and the control circuit can be greatly simplified.
Description
Technical Field
The utility model belongs to the field of display devices, and particularly relates to an electronic ink display device.
Background
The basic concept is that electrophoretic Electronic Ink (Electrophoretic Ink) technology is commonly referred to as Electronic Ink (Electronic Ink). Electronic Ink (Electronic Ink) is a new method and technique for innovating information display. Like most conventional inks, electronic ink and lines to change its color are printable on a variety of surfaces, from curved plastic, polyester film, paper to cloth. The difference from conventional paper is that electronic ink changes color when energized and can display a changing image, such as a calculator or cell phone display.
Electronic ink consists of millions of Microcapsules (Microcapsules) that are about the same size as the diameter of human hair. Each microcapsule contains electrophoretic particles-negatively charged white and positively charged black particles suspended in a transparent fluid. By utilizing the principle of positive and negative attraction, when an electric field is switched on, black or white particles corresponding to the block move to the top end of the microcapsule, and a user can see white or black on the block.
Electronic ink screen: the electronic ink screen is a screen using electronic ink. Electronic ink screens are also known as electronic paper display technology. The Sipix and Eink micro-encapsulation techniques shown in fig. 10 and 11 can be two techniques that are co-ordinated. The microcapsule technology for Eink is to store black and white electrophoretic particles in individual microcapsules. Sipix is a device in which particles are stored in a cup-shaped recess.
The three-color electronic ink system has similar operation principle to a two-color system and has more neutral electrophoresis particles; the negative charge particles, the positive charge particles and the neutral electrophoresis particles have three colors, and different voltages are applied to enable the particles with different colors to move to the upper layer, so that different colors are seen.
Via is one of the important components of a multi-layer PCB. Vias can be operatively divided into two categories, electrical connections between layers and fixing or positioning for use as devices. Vias are generally classified into three types from the process, namely blind vias (blind via), buried vias (buried via), and through vias (through via).
Blind hole: refers to the top and bottom surfaces of a printed wiring board having a depth for connection of the top layer wiring and the underlying inner layer wiring, the depth of the hole to the aperture typically not exceeding a certain ratio.
Burying holes: refers to a connection hole located in the inner layer of the printed wiring board, which does not extend to the surface of the wiring board.
And (3) through holes: such holes pass through the entire circuit board and can be used to provide internal interconnections or mounting location holes for components. Because the through holes are easier to realize in terms of technology and lower in cost, the through holes are generally used for printed circuit boards. The prior art level generally requires that the inner diameter of the full-through hole is 0.2mm (8 mil) or more, the outer diameter is 0.4mm (16 mil) or more, the outer diameter must be controlled to be 0.35mm (14 mil) in difficult places, the spacing between the through holes is not too close, the hole breakage is easy to occur during drilling, the hole spacing is generally required to be 0.5mm or more, the hole spacing is required to be avoided to the greatest extent from 0.35mm to 0.4mm, and the hole spacing is forbidden to be 0.3mm or less.
The names of the circuit boards are: ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, PCB boards, aluminum substrates, high frequency boards, thick copper plates, impedance boards, PCBs, ultra-thin circuit boards, printed (copper etching technology) circuit boards, and the like. The circuit board can be called a printed circuit board or a printed circuit board, the English name is (Printed Circuit Board) PCB and (Flexible Printed Circuit board) FPC circuit board, the FPC circuit board is also called a flexible circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent flexibility. The circuit boards are classified into three major categories, namely single-sided boards, double-sided boards and multi-layer circuit boards, according to the number of layers. On the most basic PCB, the parts are concentrated on one side and the wires are concentrated on the other side. The double-sided board is an extension of the single-sided board, both sides have copper-clad traces, and the wiring between the two layers can be conducted through the vias. The multi-layer board is formed by laminating conductive pattern layers with insulating materials therebetween at intervals. The circuit board is classified into a Flexible Printed Circuit (FPC), a rigid Printed Circuit (PCB), and a flexible-rigid printed circuit (FPCB) according to characteristics.
A flexible printed circuit board (Flexible Printed Circuit, FPC) is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent flexibility. The wiring density is high, the weight is light, the thickness is thin, the flexibility is good.
In the prior art, electronic ink display devices are usually implemented by coating electronic ink on a plastic film, and then attaching a Thin Film Transistor (TFT) circuit to the electronic ink, which is controlled by a driving IC to form a pixel pattern. The traditional electronic ink display screen or electronic paper is composed of electronic ink formed by coating tiny particles on a substrate, wherein the electronic ink particles are formed by sealing a plurality of black and white particles respectively charged with positive electricity and negative electricity in microcapsules filled with liquid, and the charged particles with different colors can move in different directions due to different applied electric fields, so that the black or white effect is displayed on the surface of the display screen. In general, in order to apply an electric field to these particles, a TFT (thin film transistor) layer needs to be provided at the bottom of the particle layer, and a control circuit controls the electric field applied to the electronic ink by controlling on and off of transistors on the TFT layer. Since a TFT (thin film transistor) layer is produced by a semiconductor process, the price of large-sized TFT production equipment is very high.
In many places, the display of the changing area is required to be large, but the displayed image is simpler, such as the wall and the floor of a kindergarten, and the display of a simple huge font or graph is required, or the display of a propaganda logo or image is required to be outdoor, and in these places, the displayed graph is huge, the resolution is low, the color requirement is simple, but the area is huge, and the TFT is adopted as the pixel graph to be very expensive, so that the electronic ink is difficult to popularize and apply in these scenes.
Disclosure of Invention
In order to solve the problem that electronic ink is huge in display graphics, low in resolution and low in color change requirement on application scene requirements, the utility model provides an electronic ink display device which comprises an upper transparent electrode layer, an electronic ink layer, a graphic electrode layer and a wire layer; the upper transparent electrode layer comprises an upper transparent electrode; the pattern electrode layer comprises 1 or 2 or more pattern electrode plates, the wire layer comprises 1 or 2 or more pattern electrode wires, and the pattern electrode wires are connected with the pattern electrode plates in an electric signal manner; and a voltage signal is introduced or cut off to the pattern electrode through the pattern electrode lead, an electric field is formed between the pattern electrode sheet and the upper transparent electrode, and the electric field drives the electronic ink layer between the upper transparent electrode and the pattern electrode sheet to change and display different colors.
The area of the pattern electrode plate is larger than or equal to that of the circuit board Kong Waijing.
The pattern electrode layer comprises M rows and N columns of image electrode plates, and M or N is more than or equal to 2.
The electronic ink display device further comprises a pattern insulating layer, wherein the pattern insulating layer is positioned between the pattern electrode layer and the wire layer.
The pattern electrode layer, the insulating layer and the wire layer are formed by a circuit board; the copper foil layer of the circuit board is processed to form a pattern electrode layer, the copper foil layer of the circuit board is processed to form a wire layer, and wires of the wire layer are electrically communicated with the pattern electrode plate of the pattern electrode layer through the via hole.
The electronic ink display device further comprises a lead-out connector, wherein the lead-out connector is connected with the lead electric signal of the lead layer.
The electronic ink display device further comprises a control circuit board, wherein the control circuit board is in electric signal connection with the lead-out connector.
The electronic ink layer includes transparent microcapsules containing negatively charged negative pigment particles and positively charged positive pigment particles, and the negative pigment particles or the positive pigment particles include two or more colors.
The electronic ink layer includes a cup-shaped recess containing negatively charged negative pigment particles and positively charged positive pigment particles therein, and the negative pigment particles or the positive pigment particles include two or more colors.
The graphic electrode sheet includes letters, characters, figures and/or numerals of a prefabricated shape.
One of the technical effects of the technical scheme is as follows: the pattern electrode layer is directly connected to the fixed lead, the display device is simple and low in cost, the switching of a single pattern electrode can drive the color switching of a large area, a complex TFT circuit is not needed, and the control circuit can be greatly simplified. And the display has no requirement on backlight, can be clearly seen at a plurality of angles, and has far higher accessibility than the traditional backlight display screen.
The second technical effect of the technical scheme is that: the M rows and N columns of image electrodes form large pixel points, and the multi-block display device can display huge low-resolution patterns.
The third technical effect of the technical scheme is that: although individual wires can be used to connect the pattern electrode pads, the insulating layer prevents conduction interference between the wires, and the reliability is higher.
The technical effects of the technical scheme are as follows: the flexible circuit board has flexibility, can deform, is easy to process, reduces the cost, and reduces the cost by at least one order of magnitude relative to the driving form of the TFT.
The technical effect of the technical scheme is as follows: the lead-out connector can collect a plurality of leads together, and is connected with the control circuit uniformly, so that centralized control can be conveniently realized, and compared with the traditional TFT, the control method is simpler and more efficient in driving and more energy-saving.
The technical effect of the technical scheme is as follows: because the large area of the graphic electrode controls a color display, without changing the gradient color, rich colors can be formed by negative or positive pigment particles of different color ratios.
The seventh technical effect of the technical proposal is that: graphics are preset, and although the display cannot be changed, the function can be indicated by controlling the display or unrealistic non-display of these graphics. In some places with simple functional requirements, huge application space is provided, such as switching between maintenance stop and use states of a bathroom, switching between business and non-business states of a shop, and application scenes such as a hotel room 'do not disturb' indication board. When needed, the editing and modification of the content are very convenient, and the usability is good.
The eighth technical effect of the technical scheme is that: the circuit board is adopted as the pattern electrode, the production and the processing are convenient, the cost is low, and the circuit board has certain structural support strength and can support a large display area.
The technical effect of the technical scheme is as follows: the flexible circuit board is adopted as the pattern electrode, is convenient to process, has certain structural strength, can deform at the same time, can be applied to an uneven surface, and can be used as a surface material of an automobile shell.
The technical effects of the technical scheme are ten as follows: the processing of the circuit board belongs to precise machining, the via hole technology is continuously developed, the smaller the size of the graph electrode plate is, the more exquisite the graph accuracy is.
Drawings
FIG. 1 is one of schematic diagrams of an embodiment of an electronic ink display device;
FIG. 2 is a schematic diagram of an exploded view of an embodiment of an electronic ink display device;
FIG. 3 is a schematic side view of an embodiment of an electronic ink display device;
FIG. 4 is a schematic perspective view of an embodiment of an electronic ink display device;
FIG. 5 is a second schematic diagram of an embodiment of an electronic ink display device;
FIG. 6 is a schematic diagram of a conductive line layer in an electronic ink display device;
FIG. 7 is a schematic diagram of a patterned electrode layer in an electronic ink display device;
FIG. 8 is a schematic diagram of an electronic ink display device including lead out connectors and leads;
FIG. 9 is a schematic diagram of one embodiment of the internal structure of an electronic ink layer in an electronic ink display device;
FIG. 10 is a schematic diagram of an internal structure of an electronic ink layer in an electronic ink display device according to the prior art;
FIG. 11 is a schematic diagram showing an internal structure of an electronic ink layer in an electronic ink display device according to the prior art.
Detailed Description
The present utility model is described in further detail below with reference to the accompanying drawings.
The following description of the preferred embodiments of the present utility model is not intended to limit the present utility model. The description of the preferred embodiments of the present utility model is merely illustrative of the general principles of the utility model. The embodiments described in this disclosure are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and technical features numbered with numerals such as Arabic numerals 1, 2, 3, etc., and such numbers as "A" and "B" are used for descriptive purposes only and are not intended to represent a temporal or spatial sequential relationship for ease of illustration; and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first", "second", and numbered with numerals 1, 2, 3, etc., may explicitly or implicitly include one or more such features. In the description of the present utility model, the meaning of "a number" is two or more, unless explicitly defined otherwise.
In an embodiment of an electronic ink display device as shown in fig. 1 to 3, the electronic ink display device includes an upper transparent electrode layer 100, an electronic ink layer 200, a graphic electrode layer 300, and a conductive line layer 500; the upper transparent electrode layer 100 includes an upper transparent electrode; the pattern electrode layer 300 includes 1 or 2 or more pattern electrode pieces, the wire layer 500 includes 1 or 2 or more pattern electrode wires electrically connected to the pattern electrode pieces; and a voltage signal is introduced or cut off to the pattern electrode through the pattern electrode lead, an electric field is formed between the pattern electrode sheet and the upper transparent electrode, and the electric field drives the electronic ink layer between the upper transparent electrode and the pattern electrode sheet to change and display different colors. The pattern electrode layer is directly connected to the fixed lead, the display device is simple and low in cost, the switching of a single pattern electrode can drive the color switching of a large area, a complex TFT circuit is not needed, and the control circuit can be greatly simplified.
In an embodiment of an electronic ink display device as shown in fig. 4 to 6, the graphic electrode layer includes M rows and N columns of image electrode plates, where M or N is greater than or equal to 2. Reference numerals 411 to 444 denote M rows and N columns of image electrode plates, where M and N have values of 4; the area of the pattern electrode plate is larger than or equal to 1 square centimeter. Reference numerals 511 to 544 are pattern electrode leads. Reference numerals 411 to 444 are M rows and N columns of image electrode pads. The image electrode pads may also be arranged in combinations of different patterns as shown in fig. 7. The M rows and N columns of image electrodes form large pixel points, and the multi-block display device can display huge low-resolution patterns.
In the embodiment of an electronic ink display device shown in fig. 1 to 8, the electronic ink display device further includes a lead-out connector 600, where the lead-out connector 600 is electrically connected to the lead of the lead layer 500. In the embodiment of an electronic ink display device shown in fig. 7 to 8, reference numeral 710 is a first graphic electrode sheet 710, and reference numeral 720 is a second graphic electrode sheet 720; the lead-out connector 600 is further electrically connected to a first lead 810 and a second lead 820 in the lead layer, respectively, the first lead 810 being for electrical connection with the first pattern electrode tab 710; the second wire 820 is electrically connected to the second pattern electrode tab 720. The first pattern electrode tab 710 is an electrode tab of a set shape; the second pattern electrode sheet 720 is an electrode sheet with another set shape, and the electric field time sequence control combinations corresponding to the two pattern electrode sheets can display corresponding pattern combinations. The graphic electrode sheet includes letters, characters, figures and/or numerals of a prefabricated shape. Graphics are preset, and although the display cannot be changed, the function can be indicated by controlling the display or non-display of these graphics. In some places with simple functional requirements, huge application space is provided, such as switching between maintenance stop and use states of a bathroom, switching between business and non-business states of a shop, and application scenes such as a hotel room 'do not disturb' indication board.
If the circuit board process is adopted to process the pattern electrode plates, the minimum size of the pattern electrode plates is limited by the circuit board process, the minimum area can be the outer diameter area of the through holes, and the connecting wires of different pattern electrode plates are led out through the multilayer board, so that finer and complex pattern change control can be realized.
For most of simple graphic change display applications, such as elevator control panels, instrument control panels and other traditional segment code application scenes, the graphic electrode plates are processed by adopting a circuit board process, so that the production cost of the electronic ink display device can be greatly reduced, the processing difficulty is reduced, the processing period is shortened, and the application scenes of the electronic ink display device can be greatly expanded by matching with illumination.
In an embodiment of an electronic ink display device as shown in fig. 1-8, a plurality of wires may be grouped together and connected to a control circuit by a wire lead connector 600. In some embodiments of an electronic ink display device not shown in the drawings, the electronic ink display device further comprises a control circuit board, wherein the control circuit board is in electrical signal connection with the lead-out connector.
In the embodiment of an electronic ink display device shown in fig. 1 to 3, the electronic ink display device further includes an insulating layer 400, where the insulating layer 400 is located between the patterned electrode layer 300 and the conductive line layer 500. Although individual wires may be used to connect the individual pattern electrode pads, the insulating layer prevents conduction interference between the wires.
In an embodiment of an electronic ink display device as shown in fig. 1 to 6, a graphic electrode layer 300, an insulating layer 300, a conductive line layer 500 are formed of a flexible circuit board; the copper foil layer of the flexible circuit board is processed to form a pattern electrode layer, the copper foil layer of the flexible circuit board is processed to form a wire layer, and the wires of the wire layer are electrically communicated with the pattern electrode plate of the pattern electrode layer through the via holes. The flexible circuit board has flexibility, can deform and is easy to process. A flexible printed circuit board (Flexible Printed Circuit abbreviated as FPC) is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent flexibility. The wiring density is high, the weight is light, the thickness is thin, the flexibility is good. Organically combining the flexible circuit board with the electronic ink layer forms a cost-effective display solution.
In an embodiment of an electronic ink display device as shown in fig. 1 to 8, the electronic ink layer includes a transparent microcapsule, the transparent microcapsule includes therein negatively charged pigment particles and positively charged pigment particles, and the negatively or positively charged pigment particles include two or more colors. Wherein the electropositive pigment particles may comprise microparticles of two or more colors; the negative pigment particles may also comprise microparticles of two or more colors; whereby more complex colors can be combined. Because the large area of the graphic electrode controls a color display, without changing the gradient color, rich colors can be formed by negative or positive pigment particles of different color ratios.
In an embodiment of an electronic ink display device as shown in fig. 1 to 9, the electronic ink layer includes a cup-shaped recess, wherein the cup-shaped recess contains negatively charged negative pigment particles and positively charged positive pigment particles therein, and the negatively or positively charged pigment particles include two or more colors.
While the utility model has been illustrated and described in terms of a preferred embodiment and several alternatives, the utility model is not limited by the specific description in this specification. Other alternative or equivalent components may also be used in the practice of the present utility model.
Claims (10)
1. An electronic ink display device is characterized in that,
comprises an upper transparent electrode layer, an electronic ink layer, a pattern electrode layer and a wire layer; the upper transparent electrode layer comprises an upper transparent electrode; the pattern electrode layer comprises 1 or 2 or more pattern electrode plates, the wire layer comprises 1 or 2 or more pattern electrode wires, and the pattern electrode wires are connected with the pattern electrode plates in an electric signal manner; and a voltage signal is introduced or cut off to the pattern electrode through the pattern electrode lead, an electric field is formed between the pattern electrode sheet and the upper transparent electrode, and the electric field drives the electronic ink layer between the upper transparent electrode and the pattern electrode sheet to change and display different colors.
2. The electronic ink display device of claim 1, wherein,
the area of the pattern electrode plate is larger than or equal to that of the circuit board Kong Waijing.
3. The electronic ink display device of claim 1, wherein,
the pattern electrode layer comprises M rows and N columns of image electrode plates, and M or N is more than or equal to 2.
4. The electronic ink display device of claim 1, wherein,
the device further comprises a pattern insulating layer, wherein the pattern insulating layer is positioned between the pattern electrode layer and the wire layer.
5. The electronic ink display device of claim 3, wherein,
the pattern electrode layer, the insulating layer and the wire layer are formed by a circuit board; the copper foil layer of the circuit board is processed to form a pattern electrode layer, the copper foil layer of the circuit board is processed to form a wire layer, and wires of the wire layer are electrically communicated with the pattern electrode plate of the pattern electrode layer through the through holes.
6. The electronic ink display device of claim 5, wherein,
the circuit board is a flexible circuit board; the graphic electrode sheet includes letters, characters, figures and/or numerals of a prefabricated shape.
7. The electronic ink display device of claim 1, wherein,
the wire leading-out connector is connected with the wire electric signal of the wire layer.
8. The electronic ink display device of claim 6, wherein,
the control circuit board is connected with the lead-out connector through an electric signal.
9. The electronic ink display device of claim 1, wherein,
the electronic ink layer comprises transparent microcapsules, wherein negative pigment particles and positive pigment particles with negative charges are contained in the transparent microcapsules, and the negative pigment particles or the positive pigment particles comprise two or more colors.
10. The electronic ink display device of claim 1, wherein,
the electronic ink layer comprises a cup-shaped groove, negative charge pigment particles and positive charge pigment particles are contained in the cup-shaped groove, and the negative charge pigment particles or the positive charge pigment particles comprise two or more colors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320125331.2U CN219609398U (en) | 2023-01-16 | 2023-01-16 | Electronic ink display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320125331.2U CN219609398U (en) | 2023-01-16 | 2023-01-16 | Electronic ink display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219609398U true CN219609398U (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320125331.2U Active CN219609398U (en) | 2023-01-16 | 2023-01-16 | Electronic ink display device |
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| Country | Link |
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| CN (1) | CN219609398U (en) |
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- 2023-01-16 CN CN202320125331.2U patent/CN219609398U/en active Active
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