CN100465749C - Electrophoretic display with transflective transparent film and manufacturing method thereof - Google Patents

Abstract

The invention relates to an electrophoretic display with a transparent and reflective transparent film and a manufacturing method thereof, which comprises a transparent upper substrate, an upper substrate and a lower substrate with an electrode structure, wherein a plurality of partition walls are arranged between the upper substrate and the lower substrate, the transparent and reflective transparent film and an electrophoretic display medium comprising a plurality of dyeing particles and fluid are used for generating various single colors and hierarchical colors or displaying colors by using display fluid or optical filters with three primary colors.

Description

Electrophoretic display with transflective membrane and manufacturing method

technical field

The invention relates to an electrophoretic display with a transflective transparent film and a manufacturing method, in particular to a display structure and a manufacturing method that changes the display color by influencing the behavior of dyed particles by an electric field.

Background technique

Electrophoretic Display (Electrophoretic Display) is a kind of electric field to control the distribution of charged particles, and then change the reflectivity of the display area to ambient light to produce a display effect. This display has the following characteristics: flexible; it can be viewed by using ambient light sources; it can be matched with a roll-to-roll (Roll to Roll) process, and the mass production performance is high, so the production cost can be reduced; there is no viewing angle limit , can be viewed from any angle; it is less sensitive to changes in panel spacing, and also has bistable state (Bistability), which is one of the important technologies for the development of flexible displays or electronic paper.

The particle surface can be charged by its own dissociation or adsorption of other charged substances. When these particles are subjected to an external electric field, they will move towards the opposite electrode. This phenomenon is called electrophoresis, and the speed of electrophoresis will change with The type, particle size, concentration of charged particles, and the strength, distribution, direction of the applied electric field, and the type of suspension, particle concentration and other factors have different behaviors. Electrophoretic displays can achieve various display purposes based on this characteristic. .

Conventional technology, such as U.S. Patent No. 6,750,844, etc., has an electrophoretic display device structure, which is to make a coating film in which electrophoretic display solution microcapsules and adhesives are mixed with white and black particles with opposite electrical properties on a transparent transparent film, and then apply it Laminated on a substrate having a driving circuit to form a display device. Conventional technologies, such as US Pat. No. 6,751,007, US Pat. No. 6,750,844, etc., further disclose that the structure of the electrophoretic display device is to have a partition wall between each display unit, which has higher physical strength. The shape, size, and proportion of the partition determine the appearance of the display structure. It is an essential element for forming the shape of the display structure. The cavity formed in it is filled with an electrophoretic display solution of a plurality of dyed particles (pigment particles), and because of its patented The structure of microcup technology can ignore the limit of the edge packaging of each display unit, showing better image resolution than the microcup structure, and can effectively limit the range of solution flow, and has the characteristics of flexibility.

For the transflective electrophoretic display of SiPix Imaging, Inc. please refer to US Patent No. 6,751,007 Transflective Electrophoretic Display. 109 Separate a plurality of display units 103 to form a display device, which includes an upper substrate 101 that allows light to pass through, a lower substrate 102 that contains electrodes, and a surrounding isolation wall 109 is arranged between them. The plurality of isolation walls 109 isolate The resulting space is filled with a display solution 105 containing a plurality of dyed particles 104, and then sealed with a sealing layer 106 to form the display unit 103. Finally, the backlight module 107 is used to assist the electrophoretic display to display light.

The conventional technology shown in FIG. 1A can affect the charged dyed particles 104 in the display solution 105 by means of several forms of electric fields generated by the upper and lower substrates, so as to achieve the function of electrophoretic display. The forms of the electric field formed include up/down switching mode, in-plane switching mode and dual switching mode, so as shown in the figure, one embodiment is the upper The substrate 01 can be conductive glass (ITO), or the lower substrate includes a plurality of lateral electrodes 110 ( 110 a , 110 b ) isolated by spacers 112 and the lower electrode 111 .

The above-mentioned horizontal in-plane electric field technology can refer to U.S. Patent No. 6,639,580 (Electrophoretic Display Device and Method for Addressing Display Device), which describes the structure of the electrophoretic display and its display method. The second display electrode) generates an in-plane transverse electric field to change the behavior of charged particles in the electrophoretic display solution to produce various display results.

FIG. 1B shows an embodiment of the conventional technology, which includes a plurality of microcups, that is, a display structure in which a plurality of display units 103 are arranged and combined into a rectangular array.

This case (US Pat. No. 6,751,007) further discloses a multi-color display structure. In order to display a color picture, the display unit needs to include a display light source with three primary colors (red, green, blue), or three monochrome display units. A colored display unit, as shown in Figure 2A, the color display unit 20 includes three sub-display units that respectively display the three primary colors, wherein the colorless display solution 25 each includes a plurality of white charged dyed particles 24, which can be scattered by For the light emitted by the backlight module (not shown in this figure), the sub-display units are respectively provided with red, green and blue filter plates (21, 22, 23). With the help of the electrode structure set in the substrate, electric fields in different states are generated, thereby changing the behavior of the charged dyed particles 24, and also changing their color scattering effect, plus the filtering function of the three primary color filter plates (21, 22, 23) to achieve Present different color effects. If the white dyed particles 24 are changed to light-absorbing black dyed particles, it will be another display structure with the opposite effect.

And Fig. 2B is then another embodiment of the color display device, comprises three sub-display units showing red, green and blue in the color display unit 20, wherein the colorless and transparent display solution 25 contains colored dyed particles (26 , 27, 28), which are red dyed particles 26, green dyed particles 27 and blue dyed particles 28, respectively, in conjunction with the black or white back plate 29 and the electric field change generated by the electrode structure in the lower substrate, each dyed particle scatters the backlight module Light, resulting in different color performance.

In addition, conventional electrophoretic displays are mostly designed as reflective displays. When the ambient light source is weak or does not exist, the display will not be able to function, while transmissive electrophoretic displays only use electrophoretic display media as A light valve is not suitable for various portable products due to a large amount of energy loss after it is matched with a color filter and a backlight module.

The above-mentioned SiPix Imaging company uses the partition wall 109 as the medium of the light path, so that the electrophoretic display can be viewed in the dark, but the disadvantage is that this place will become a possible light leakage area; and the light irradiation direction generated by its backlight module does not directly pass through The display solution only plays the function of lighting and cannot provide high display quality. At the same time, its drive adopts dual-mode coexistence, which has the disadvantages of complex design and difficult manufacturing process.

Contents of the invention

Therefore, aiming at the above deficiency, the present invention provides a transflective electrophoretic display structure.

The purpose of the present invention is to make the light path of ambient light or backlight completely pass through the display solution, not only to exert the brightening effect, but also to achieve viewing regardless of whether there is an ambient light source, and the strength of the backlight module can be adjusted according to the ambient light conditions. The effect of reducing energy consumption and effectively improving the contrast of the display screen. And because of the simplicity of the drive, it helps to simplify the design and manufacturing process.

In order to achieve the above object, the present invention provides a method for manufacturing an electrophoretic display with a transflective transparent film, which includes providing an upper substrate with a plurality of electrode structures for generating an electric field; providing a lower substrate with a plurality of electrode structures for generating an electric field A plurality of electrode structures; forming a transflective transparent film on the lower substrate; making a plurality of microstructures between the upper substrate and the lower substrate to form a plurality of display areas; and combining the upper substrate and the lower substrate.

The present invention also provides an electrophoretic display with a transflective transparent film, which includes an upper substrate, which is provided with a plurality of electrode structures for generating an electric field, and is provided with a plurality of anisotropic reflectors; The other side of the upper substrate is provided with a plurality of electrode structures for generating an electric field; a plurality of microstructures are opaque materials arranged between the upper substrate and the lower substrate to form a plurality of display areas; a display The medium is composed of a plurality of dyed particles and a transparent fluid, and is filled in the space formed by the upper substrate, the lower substrate and the plurality of microstructures; and a transflective transparent film is formed on the plurality of on the lower substrate of the display area.

In another embodiment, the above-mentioned display medium can be red, green, and blue display fluids, and red, green, and blue light filters can also be used to replace the multiple display fluids. The display medium only uses transparent fluid and dyed particles Just make up.

Description of drawings

FIG. 1A is a schematic structural diagram of a display unit of an electrophoretic display in conventional technology;

FIG. 1B is a schematic structural diagram of an electrophoretic display in conventional technology;

FIG. 2A is a schematic structural diagram of a conventional color display device;

FIG. 2B is a schematic structural diagram of a conventional color display device;

3A to 3D are schematic diagrams of the manufacturing method of the electrophoretic display with a transflective membrane according to the present invention;

4A is a schematic diagram of the black state of the first embodiment of the electrophoretic display with a transflective transparent film of the present invention;

FIG. 4B is a schematic diagram of the white state of the first embodiment of the electrophoretic display with a transflective transparent film of the present invention;

5A is a schematic diagram of the white state of the second embodiment of the electrophoretic display with a transflective transparent film of the present invention;

5B is a schematic diagram of the black state of the second embodiment of the electrophoretic display with a transflective transparent film of the present invention;

6A is a schematic diagram of the electrophoretic display in the white state of the third embodiment;

6B is a schematic diagram of the electrophoretic display in the black state of the third embodiment;

6C is a schematic diagram of the electrophoretic display in the red state of the third embodiment;

7A is a schematic side view of an electrophoretic display in a white state according to a fourth embodiment of the present invention;

7B is a schematic diagram of an electrophoretic display in a black state according to a fourth embodiment of the present invention;

7C is a schematic diagram of an electrophoretic display in a red state according to a fourth embodiment of the present invention;

8A is a schematic side view of an electrophoretic display in a white state according to a fifth embodiment of the present invention;

8B is a schematic diagram of an electrophoretic display in a black state according to a fifth embodiment of the present invention;

8C is a schematic diagram of an electrophoretic display in a red state according to a fifth embodiment of the present invention;

FIG. 9A is a schematic structural view of the first embodiment of the transflective transflective membrane of the present invention;

FIG. 9B is a schematic structural diagram of the second embodiment of the transflective membrane of the present invention; and

FIG. 9C is a schematic diagram of the optical path of the transflective transflective tapered design of the present invention.

Symbol Description:

Upper substrate 101, 30, 501, 601, 701

Lower base plate 102, 32, 502, 602, 702

Display unit 103

Dyed Particles 104, 24, 40, 54, 64, 74

Display solutions 105, 51, 53, 55, 61a, 61b, 61c, 71a, 71b, 71c

Sealing layer 106

Backlight module 107

Wall 109

Lateral electrodes 110a, 110b

Lower electrode 111

Partition 112

Color display unit 20

Red filter plate 21

Green filter plate 22

Blue filter plate 23

Show solution 25

Red Dyed Particles 26

Green Dyed Particles 27

Blue Dyed Particles 28

Backplane 29

Transflective membrane 34, 512, 66, 76

Microstructure 36, 52, 62, 72

Display Area 38

Anisotropic reflector 42

Color display unit 50

Red Filter 621, 721

Green filter 623, 723

Blue Filter 625, 725

metal permeable film 80

Round hole 82

Columnar opening 84

Photoresist layer 840

Metal film 842

Detailed ways

The invention is an electrophoretic display with a transflective transparent film, which combines the advantages of the reflective and transmissive electrophoretic displays. It includes a light-transmitting upper substrate, a lower substrate or/and an upper substrate with a transverse electric field electrode design, a plurality of microstructures are arranged therebetween, a transflective transparent film is arranged on the lower substrate, and a plurality of dyed particles and a An electrophoretic display medium of a transparent fluid to produce a single color, layered color or color display. Moreover, the present invention can make the light path of the ambient light or the backlight completely pass through the display medium, exert the effect of brightening, and also achieve viewing regardless of whether there is an ambient light source, and the strength of the backlight module can be adjusted according to the ambient light conditions to reduce energy consumption. Loss and effectively improve the contrast effect of the display screen. The embodiments of the present invention are described below.

Please refer to FIG. 3A to FIG. 3D , which are schematic diagrams showing the manufacturing method of the electrophoretic display with a transflective membrane according to the present invention. In Fig. 3A, an upper substrate 30 is firstly provided, which is provided with a plurality of electrode structures (not shown) for generating an electric field, and a plurality of color filters (not shown) may be arranged on the plurality of corresponding to the plurality of display areas. On the upper substrate or the lower substrate (this step can be used interchangeably with the electrophoretic display medium method), the plurality of color filters are red, green or blue, wherein the upper substrate is a transparent substrate and contains A plurality of anisotropic reflectors 42, and the plurality of anisotropic reflectors are designed at the places of the plurality of microstructures, and are designed to reflect incident light to a specific direction. The plurality of anisotropic reflectors on the upper substrate An electrode structure is matched with the plurality of electrode structures of the lower substrate to generate an electric field of vertical switching type, horizontal electric field type or double switching type.

As shown in Figure 3B, a lower substrate 32 is provided, which is provided with a plurality of electrode structures for generating an electric field, the lower substrate is a transparent substrate, wherein the plurality of electrode structures of the lower substrate can be a plurality of side electrode structures, the lower substrate The plurality of electrode structures generate a transverse electric field. A transflective transparent film 34 is formed on the lower substrate, wherein the transflective transparent film can be formed by sputtering. The transflective transparent film can be made of a metal material, and can also be penetrated by light with a special structural design. The light transmittance and light reflection rate of the transflective transparent film are both between 1% and 99%. The transflective transparent film has the ability to reflect part of the ambient light and at the same time allow part of the backlight to penetrate , a light source is disposed under the lower substrate.

Fig. 3C, make a plurality of microstructures 36 between the upper substrate and the lower substrate to form a plurality of display areas 38, the plurality of microstructures are opaque materials or translucent materials, and are closed rules The regular structure is lattice or hexagonal, filling a plurality of electrophoretic display media in the plurality of display areas (this step is interoperable with the practice of multiple color filters), the plurality of The electrophoretic display medium is red, green or blue, and contains a plurality of dyed particles 40 in the plurality of display areas, and the plurality of dyed particles are black particles, colored particles or other colored transparent particles. FIG. 3D , the upper substrate 30 and the lower substrate 32 are assembled. After the combination, a light source (not shown) can be disposed under the lower substrate. The light source is a backlight.

4A is a schematic diagram of the black state of the first embodiment of the electrophoretic display with a transflective transparent film of the present invention. In this embodiment, the plurality of dyed particles included in the plurality of display regions are black particles as an example. The light enters the display area 38 through the transflective film 34 from the lower substrate 30. In this embodiment, the microstructure 36 is an opaque material, so when the light path enters the microstructure wall, it will be reflected and enter the display area. 38, and shoot the light path to the upper substrate 30, as can be seen in the figure, the light path will be absorbed by the black particles covering the upper substrate, thus appearing black. In another embodiment, the same black state can also be obtained by covering the lower substrate with black particles (not shown). When external ambient light is about to enter the display area, a black state will be obtained due to the arrangement of black particles on the upper substrate or the lower substrate.

4B is a schematic diagram of the white state of the first embodiment of the electrophoretic display with a transflective transparent film of the present invention, because in this embodiment, the microstructure 36 is an opaque material, which is produced by the backlight module below the lower substrate 32 The light passes through the transflective transparent film 34, and when it enters the micro-structure wall, it will be reflected into the display area, and the charged black particles 40 are filled with the micro-structure wall due to the control of the electric field, so the light path will pass through the display area. The area breaks through, allowing the viewer to see white light. At the same time, the present invention is not limited to using the backlight module to generate brightness, and can also use ambient light to enter the display area 38 through the upper substrate 30 and be reflected/scattered by the transflective transparent film 34 to display white.

FIG. 5A is a schematic diagram of a white state of the second embodiment of the electrophoretic display with a transflective film according to the present invention. As shown in the figure, the display area 38 includes an upper substrate 30 made of a transparent material, and a lower substrate 32 with an electrode structure arranged on the other side of the upper substrate 30 , and the intervals are separated by microstructures 36 up and down. The upper substrate 32 is provided with an anisotropic reflector 42 corresponding to the microstructure 36, and the lower substrate 32 or/and the upper substrate 30 have an electrode design in a lateral (in-plane) driving mode, which can generate a lateral electric field, and the black particles 40 Distributed on the side of the microstructure wall 30 , except for the area corresponding to the microstructure 36 , the lower substrate 32 is provided with a transflective transparent film 34 . In this embodiment, the microstructure 36 is a light-transmitting material, and the light source is arranged below the display area 38. The light can pass through the transflective transparent film 34 to form an anisotropic light path to the upper substrate 30 through the light-transmitting microstructure 36 ( Anisotropic) reflector 42, so that the incident light does not reflect back along the original incident direction, but reflects the incident light into the display area formed by the microstructure, which is consistent with the path of external ambient light entering the display area, which can improve the display effect .

FIG. 5B is a schematic diagram of the black state of the second embodiment of the electrophoretic display with a transflective film according to the present invention. As shown in the figure, the light path is generated by the backlight module and enters the display area through the transflective transparent film. The light path will also be formed by the light-transmitting microstructure 36 and shoot to the anisotropic (anisotropic) reflector 42 of the upper substrate 30, so that The incident light does not reflect back along the original incident direction, but reflects the incident light into the display area formed by the microstructure. Due to the electric field distribution effect of the electrode structure arranged on the lower substrate, the black particles 40 are distributed on the upper substrate. At this time, external ambient light cannot enter the display area due to the black particles 40 , and what the viewer sees at this time is a black state.

The form of the electric field formed by the lower substrate 32 of the electrophoretic display of the present invention is a horizontal electric field type (in-plane switching mode); and the upper substrate 30 can be arranged with its electrode structure on the lower substrate 32, which can produce up and down vertical switching mode (up/down) switching mode), transverse electric field or double switching (dual switching mode) electric field electrode structure. A backlight module can be arranged under the lower substrate as an auxiliary light source.

The present invention can also change the structure to form a display unit capable of displaying colors. Its structure includes at least three sub-display units displaying three primary colors, each of which includes a light-transmitting upper substrate, a lower substrate or an upper substrate with a transverse electric field, and a A plurality of separation walls and an electrophoretic display solution including a plurality of charged dyed particles and a transparent fluid of three primary colors, or a color filter is set, so as to present a color display. Its embodiment can use ambient light or backlight, and its light path can completely pass through the display medium to play a brightening effect, and it can be viewed regardless of whether there is an ambient light source or not, and the strength of the backlight module can be adjusted according to the ambient light conditions. Reduce energy consumption and effectively improve the contrast and color of the display screen. The following is a description of the embodiments thereof.

6A to 6C are schematic diagrams of an embodiment of a color electrophoretic display with a transflective transflective film according to the present invention. Wherein the color display unit 50 includes an upper substrate 501 made of a transparent material, and a lower substrate 502 with an electrode structure arranged on the other side relative to the upper substrate 501, the intervals of which are separated up and down by microstructures 52 and form a lattice. In the space of the microstructure, the color display unit 50 at least utilizes the space of the lattice microstructure to form sub-display units of three primary colors to present color effects. In addition, the upper substrate 501 can also cooperate with the lower substrate 502 to set up its electrode structure, such as vertical switching type, horizontal electric field type or double switching type, etc. The lower substrate 502 is provided with a transflective transparent film. In this embodiment, the microstructure 52 is an opaque material. When the light is reflected by the upper substrate 501 and passes through the display fluids of different colors, it will present different color effects. The ambient light source can also be introduced to make it fully pass through the display medium. 51, 53, 55, and achieve efficient luminous efficacy.

Taking the microstructure as the light-transmitting material as an example, the light source is arranged below the color display unit 50, and the light can be directed to the anisotropic reflector of the upper substrate 501 through the transflective film through the light-transmitting microstructure 52 to form a light path, and The incident light is reflected into the space formed by the microstructure, so that the light path can effectively pass through the display fluid (51, 53, 55). In addition to the use of light sources, ambient light sources can also be introduced to allow them to fully pass through the display fluids 51, 53, 55 to achieve efficient lighting effects.

The display medium in the color electrophoretic display includes transparent fluids such as red display fluid 51 , green display fluid 53 , and blue display fluid 55 in a color display unit 50 , which contain charged dyed particles 54 . When the light is reflected by the anisotropic reflector of the upper substrate 501 and passes through different color display fluids, different color effects will be presented.

6A is a schematic diagram of the white state of the third embodiment. The light generated by the backlight module below the lower substrate 502 passes through the transflective film 512, enters the space formed by the microstructures 52, and reflects the microstructures respectively. The red, green, and blue colors in the space show the fluid (51, 53, 55), because at this time the charged dyed particles 54 in the display medium are covered with the microstructure wall 52 due to the control of the electric field, and the three primary colors are evenly transmitted through Mixed light, so that the viewer can see white light. Ambient light can also be used as a light source, so that it can fully pass through the red, green, and blue display solutions (51, 53, 55) and then reflect/scatter through the transflective transparent film. It is also possible to use backlight and ambient light at the same time to generate effective Efficient light-emitting display unit.

6B is a schematic diagram of the electrophoretic display in the black state of the third embodiment. The color display unit 50 includes at least three sub-display units that emit light of three primary colors. The light is formed by entering the microstructure 52 through the transflective film 512 from the lower substrate 502. In the space, the light path shoots to the upper substrate 501, because it needs to be displayed in a black state, that is, due to the state of the electric field, the charged black dyed particles 54 are all distributed on the upper substrate 501, so the reflected light will be absorbed through the transflective transparent film 512, The color display unit 50 is in a black state without being emitted from the display fluid of the three primary colors.

And if a single red color is to be displayed, as shown in Figure 6C, the black dyed particles 54 in the green display fluid 53 and the blue display fluid 55 are close to the upper substrate 501 due to the change of the electric field, and will not reflect/scatter colored light , and the black dyed particles 54 in the red display fluid 51 are close to the side of the microstructure 52 due to the change of the electric field, so that the light emitted from the transflective transparent film passes through the red display fluid 51 to make the color display unit 50 appear red.

From the above, it can be seen that by controlling the electric field in the display unit 50 to change the state of the black dyed particles 54 , the color display unit 50 can display a variety of different colors.

Each of the above-mentioned display units is formed by intervals of microstructures 52 between the upper and lower substrates, wherein the black dyed particles in the display medium will change states due to changes in the electric field. For example, when displaying a white state, each black dyed particle is close to the edge of the microstructure. The light source can be reflected/scattered, and the red, green, and blue colors are uniformly mixed to form white light.

7A is a schematic side view of the electrophoretic display in the white state of the fourth embodiment of the present invention. The microstructure described in this embodiment is an opaque material, and in the space formed by the upper and lower substrates 601, 602 and the microstructure 62, the transparent The colorless electrophoretic display medium 61a, 61b, 61c is filled with a plurality of black dyed particles 64 therein. Light filters 621 , 623 , 625 of three primary colors such as red, green and blue and light-transmitting materials are arranged at the micro-structure space corresponding to the upper substrate and where the light passes through. The white state of the display unit is obtained by uniformly mixing the three primary colors presented by each sub-display unit. When the light enters the display medium 61a, 61b, 61c in each sub-display unit, the charged black dyed particles 64 in the medium will be affected by the electric field. The arrangement is close to the microstructure wall 62 , and the light passes through the red filter 621 , the green filter 623 and the blue filter 625 to be mixed into white light and emitted. In this embodiment, ambient light sources can also be used to enter the display medium through various color filters, without the need for a backlight module, or can be used for mutual compensation to increase display efficiency.

7B is a schematic diagram of the electrophoretic display in the black state of the fourth embodiment of the present invention. The light enters the space formed by the microstructure 62 through the transflective film 66 from the lower substrate 602, and the light path is directed to the upper substrate 601. Due to the need for display In the black state, that is, due to the state of the electric field, the charged black dyed particles 64 are distributed on the upper substrate 601, so the reflected light will be absorbed through the transflective transparent film 66, and will not be emitted through the filters of the three primary colors, making the electrophoretic display Appears in black state.

And if a single red color is to be displayed, as shown in Figure 7C, the black dyed particles 64 in the green filter 623 and the blue filter 625 are close to the upper substrate 601 due to the change of the electric field, and will not be reflected/scattered. Colored light, and the black dyed particles 64 in the red filter 621 are close to the side of the microstructure 62 due to the change of the electric field, so that the light emitted from the transflective transparent film passes through the red filter 621 to make the electrophoretic display appear red. state.

8A is a schematic side view of the electrophoretic display in the white state according to the fifth embodiment of the present invention. The microstructure described in this embodiment is an opaque material, and in the space formed by the upper and lower substrates 701, 702 and the microstructure 72, the transparent The colorless electrophoretic display medium 71a, 71b, 71c is filled with a plurality of black dyed particles 74 therein. In the microstructure space corresponding to the lower substrate, there are three primary colors of red, green, blue and other optical filters 721, 723, 725 which can transmit light. The white state of the display unit is obtained by uniformly mixing the three primary colors presented by each sub-display unit. When the light enters the display medium 71a, 71b, 71c in each sub-display unit, the charged black dyed particles 74 in the solution will be The arrangement is close to the microstructure wall 72 , and the light passes through the red filter 721 , the green filter 723 and the blue filter 725 to be mixed into white light and emitted. In this embodiment, ambient light sources can also be used to enter the display medium through various color filters, without the need for a backlight module, or can be used for mutual compensation to increase display efficiency.

8B is a schematic diagram of the electrophoretic display in the black state of the fifth embodiment of the present invention. The light enters the space formed by the microstructure 72 through the lower substrate 702 through the transflective transparent film 76 and the three primary color filters, and the light path is directed upward again. The substrate 701 needs to be displayed in a black state, that is, due to the state of the electric field, the charged black dyed particles 74 are distributed on the upper substrate 701, so the transmitted light will be absorbed by the black dyed particles, making the electrophoretic display appear in a black state.

And if a single red color is to be displayed, as shown in FIG. 8C, the black dyed particles 74 in the green filter 723 and the blue filter 725 are close to the top of the upper substrate 701 due to the change of the electric field, and will not be reflected/scattered. Colored light, and the black dyed particles 74 in the red filter 721 are close to the side of the microstructure 72 due to the change of the electric field, so that the light emitted from the transflective transparent film 76 passes through the red filter 721 to make the electrophoretic display appear red state.

FIG. 9A is a structural schematic diagram of the first embodiment of the present invention, which uses a special structural design to produce a transflective film-permeable effect. The transflective transparent film has the function of reflecting part of the ambient light and allowing part of the backlight to pass through. It can be a metal transparent film 80 , and its light transmittance and light reflectance are between 1% and 99%. The transflective transparent film in this embodiment is to form a plurality of circular holes 82 on the reflective film. The multiple circular holes are used to transmit light, so that the reflective film that can only reflect ambient light can be Through the design of these light-transmitting areas, the effect of partially reflecting ambient light and partially penetrating backlight is achieved.

FIG. 9B is a schematic structural diagram of the second embodiment of the transflective membrane of the present invention. In this embodiment, the transflective transparent film itself is additionally formed with a plurality of columnar openings 84. When forming the plurality of columnar openings, a plurality of photoresist layers 840 are first formed on the plurality of columnar openings, and then A plurality of metal films 842 are plated on the surfaces of the plurality of photoresist layers, wherein the plurality of photoresist layers are made of polyester resin.

In the design of the above-mentioned transflective permeable film hole, if the angle of the side wall of the hole is changed to make it a tapered design, since the area of the lower hole is larger than the area of the upper hole, the utilization rate of the backlight can be effectively improved, as shown in the figure 9C is a schematic diagram of the light path of the tapered design, and it can be seen that more light will pass through the transflective transparent film compared with the circular hole.

To sum up, the transflective electrophoretic display of the present invention is a kind of transflective transflective film in the display unit to change the behavior of the dyed particles in conjunction with the electric field to produce a variety of different display results, which is really rare. The invention of this article has great industrial applicability, novelty and progress, and fully meets the requirements for invention patent application. Please file an application in accordance with the law. Please check carefully and grant the patent of this case to protect the rights and interests of the inventor.

The above description is only a preferred feasible embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent structural changes made by using the description of the present invention and the contents of the icons are all included in the scope of the present invention. Within the scope, agree with Chen Ming.

Claims (55)

1. A method for manufacturing an electrophoretic display with a transflective membrane, comprising: providing an upper substrate provided with a plurality of electrode structures for generating an electric field; providing a substrate provided with a plurality of electrode structures for generating an electric field; forming a transflective transparent film on the lower substrate; A plurality of microstructures are fabricated between the upper substrate and the lower substrate to form a plurality of display areas, and a plurality of anisotropic reflectors are formed on these microstructures, and the plurality of anisotropic reflectors are included on the upper substrate In the substrate, these microstructures are light-transmitting materials; combine the upper substrate and the lower substrate; and A light source is arranged under the substrate. 2. The manufacturing method of an electrophoretic display with a transflective membrane according to claim 1, further comprising filling a plurality of electrophoretic display media in the plurality of display regions. 3. The manufacturing method of an electrophoretic display with a transflective film according to claim 1, wherein a plurality of color filters are arranged on the upper substrate or the lower substrate corresponding to the plurality of display regions. 4. The method for manufacturing an electrophoretic display with a transflective film according to claim 3, wherein the plurality of color filters are red, green or blue. 5. The manufacturing method of an electrophoretic display with a transflective film according to claim 1, wherein the upper substrate or the lower substrate is a transparent substrate. 6 . The method for manufacturing an electrophoretic display with a transflective film according to claim 1 , wherein the plurality of anisotropic reflectors reflect incident light to a display area formed by microstructures. 7. The method for manufacturing an electrophoretic display with a transflective film according to claim 1, wherein the plurality of electrode structures on the upper substrate are matched with the plurality of electrode structures on the lower substrate to produce an up-down vertical switching type , transverse electric field or double switched electric field. 8 . The method for manufacturing an electrophoretic display with a transflective film according to claim 1 , wherein the transflective film has the characteristic of reflecting part of ambient light and allowing part of backlight to pass through. 9. The method for manufacturing an electrophoretic display with a transflective film according to claim 1, wherein the light transmittance of the transflective film is between 1% and 99%. 10 . The method for manufacturing an electrophoretic display with a transflective film according to claim 1 , wherein the transflective film is a metal film. 11 . 11. The method for manufacturing an electrophoretic display with a transflective film according to claim 10, wherein the metal transparent film is formed by sputtering. 12. The method for manufacturing an electrophoretic display with a transflective membrane according to claim 1, wherein the plurality of microstructures are closed regular structures. 13. The method for manufacturing an electrophoretic display with a transflective film according to claim 12, wherein the regular structure is lattice or hexagonal. 14. The method for manufacturing an electrophoretic display with a transflective membrane according to claim 1, further comprising a plurality of dyed particles in each display area. 15. The method for manufacturing an electrophoretic display with a transflective membrane according to claim 14, wherein the plurality of dyed particles are black particles. 16. The method for manufacturing an electrophoretic display with a transflective film according to claim 14, wherein the plurality of dyed particles are colored transparent particles. 17. An electrophoretic display with a transflective membrane, comprising: an upper substrate, provided with a plurality of electrode structures for generating an electric field; The lower substrate is arranged on the other side relative to the upper substrate, in which a plurality of electrode structures for generating an electric field are arranged; A plurality of microstructures are arranged between the upper substrate and the lower substrate to form a plurality of display areas, and a plurality of anisotropic reflectors are formed on these microstructures, and the plurality of anisotropic reflectors are included in the upper substrate In the substrate, these microstructures are light-transmitting materials; A display medium, composed of a plurality of dyed particles and a transparent fluid, filling the display area; and a transflective transparent film formed on the lower substrate of the plurality of display areas; A backlight module is arranged under the lower substrate. 18. The electrophoretic display with a transflective transflective film according to claim 17, wherein the plurality of electrode structures on the upper substrate are matched with the plurality of electrode structures on the lower substrate to produce an up-down vertical switching type, horizontal Electric field or double switched electric field. 19. The electrophoretic display with a transflective film according to claim 17, wherein the plurality of microstructures are closed regular structures. 20. The electrophoretic display with a transflective film according to claim 19, wherein the regular structure is a lattice or a hexagon. 21. The electrophoretic display with a transflective film according to claim 17, wherein the plurality of dyed particles are black particles. 22. The electrophoretic display with a transflective film according to claim 17, wherein the plurality of dyed particles are colored transparent particles. 23. The electrophoretic display with a transflective film according to claim 17, wherein the transflective film has the property of reflecting part of ambient light and allowing part of backlight to pass through. 24. The electrophoretic display with a transflective film according to claim 17, wherein the light transmittance of the transflective film is between 1% and 99%. 25. The electrophoretic display with a transflective film according to claim 17, wherein the transflective film is a metal film. 26. The electrophoretic display with a transflective film according to claim 25, wherein the metal transparent film is formed by sputtering. 27. The electrophoretic display with a transflective film according to claim 17, wherein the structure of the transflective film forms a plurality of circular holes in the transflective film itself or in the transflective film A plurality of columnar openings are formed on the top. 28. The electrophoretic display with a transflective film according to claim 27, wherein the plurality of columnar openings pass through a plurality of photoresist layers having the structure of the transflective film firstly, and then on the A plurality of metal films are plated on the surfaces of the plurality of photoresist layers. 29. The electrophoretic display with a transflective film according to claim 28, wherein the plurality of photoresist layers are polyester resin. 30. An electrophoretic display with a transflective membrane, comprising: an upper substrate, provided with a plurality of electrode structures for generating an electric field; The lower substrate is arranged on the other side relative to the upper substrate, in which a plurality of electrode structures for generating an electric field are arranged; A plurality of microstructures are arranged between the upper substrate and the lower substrate to form a plurality of display areas, and a plurality of anisotropic reflectors are formed on these microstructures, and the plurality of anisotropic reflectors are included in the upper substrate In the substrate, these microstructures are light-transmitting materials; A red display medium, composed of a plurality of dyed particles and a transparent fluid, filled in any one of the plurality of display regions; A green display medium, composed of a plurality of dyed particles and a transparent fluid, filled in any one of the plurality of display regions; A blue display medium, composed of a plurality of dyed particles and a transparent fluid, filled in any one of the plurality of display regions; a transflective transparent film formed on the lower substrate of the plurality of display areas; and A backlight module is arranged under the lower substrate. 31. The electrophoretic display with a transflective transflective film according to claim 30, wherein the plurality of electrode structures of the upper substrate are matched with the plurality of electrode structures of the lower substrate to produce an up-down vertical switching type, horizontal Electric field or double switched electric field. 32. The electrophoretic display with a transflective film according to claim 30, wherein the plurality of microstructures are closed regular structures. 33. The electrophoretic display with a transflective film according to claim 32, wherein the regular structure is lattice or hexagonal. 34. The electrophoretic display with a transflective film according to claim 30, wherein the plurality of dyed particles are black particles. 35. The electrophoretic display with a transflective film according to claim 30, wherein the plurality of dyed particles are colored transparent particles. 36 . The electrophoretic display with a transflective film according to claim 30 , wherein the transflective film has the characteristic of reflecting part of ambient light and allowing part of backlight to pass through. 37. The electrophoretic display with a transflective film according to claim 30, wherein the light transmittance of the transflective film is between 1% and 99%. 38. The electrophoretic display with a transflective film according to claim 30, wherein the transflective film is a metal film. 39. The electrophoretic display with a transflective film according to claim 38, wherein the metal transparent film is formed by sputtering. 40. The electrophoretic display with a transflective film according to claim 30, wherein the structure of the transflective film forms a plurality of circular holes in the transflective film itself or in the transflective film A plurality of columnar openings are formed on the top. 41. The electrophoretic display with a transflective film according to claim 40, wherein the plurality of columnar openings pass through a plurality of photoresist layers having the structure of the transflective film firstly, and then on the The surface of multiple photoresist layers is plated with multiple metal films to form. 42. The electrophoretic display with a transflective film according to claim 41, wherein the plurality of photoresist layers are polyester resin. 43. An electrophoretic display with a transflective membrane, comprising: an upper substrate, provided with a plurality of electrode structures for generating an electric field; The lower substrate is arranged on the other side relative to the upper substrate, in which a plurality of electrode structures for generating an electric field are arranged; A plurality of microstructures are arranged between the upper substrate and the lower substrate to form a plurality of display areas, and a plurality of anisotropic reflectors are formed on these microstructures, and the plurality of anisotropic reflectors are included in the upper substrate In the substrate, these microstructures are light-transmitting materials; A display medium, which is composed of a plurality of dyed particles and a transparent fluid, filling the display area; A red light filter, which is arranged on the upper substrate or the lower substrate, is a light-transmitting material; A green filter, which is arranged on the upper substrate or the lower substrate, is a light-transmitting material; A blue filter, which is arranged on the upper substrate or the lower substrate, is a light-transmitting material; a transflective transparent film formed on the lower substrate of the plurality of display areas; and A backlight module is arranged under the substrate. 44. The electrophoretic display with a transflective transflective film according to claim 43, wherein the plurality of electrode structures on the upper substrate are matched with the plurality of electrode structures on the lower substrate to produce an up-down vertical switching type, horizontal Electric field or double switched electric field. 45. The electrophoretic display with a transflective film according to claim 43, wherein the plurality of microstructures are closed regular structures. 46. The electrophoretic display with a transflective transflective film according to claim 45, wherein the regular structure is lattice or hexagonal. 47. The electrophoretic display with a transflective film according to claim 43, wherein the plurality of dyed particles are black particles. 48. The electrophoretic display with a transflective film according to claim 43, wherein the plurality of dyed particles are colored transparent particles. 49. The electrophoretic display with a transflective film according to claim 43, wherein the transflective film has the property of reflecting part of the ambient light while allowing part of the backlight to pass through. 50. The electrophoretic display with a transflective film according to claim 43, wherein the light transmittance of the transflective film is between 1% and 99%. 51. The electrophoretic display with a transflective film according to claim 43, wherein the transflective film is a metal film. 52. The electrophoretic display with a transflective film according to claim 49, wherein the metal transparent film is formed by sputtering. 53. The electrophoretic display with a transflective film according to claim 43, wherein the structure of the transflective film forms a plurality of circular holes in the transflective film itself or in the transflective film A plurality of columnar openings are formed on the top. 54. The electrophoretic display with a transflective transparent film according to claim 51, wherein the plurality of columnar openings pass through a plurality of photoresist layers having the structure of the transflective transparent film first, and then on the A plurality of metal films are plated on the surfaces of the plurality of photoresist layers. 55. The electrophoretic display with a transflective film according to claim 52, wherein the plurality of photoresist layers are polyester resin.

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