CN100394269C - Flexible reflective display device and manufacturing method thereof - Google Patents

Abstract

The invention relates to a flexible reflective display device and a manufacturing method thereof, which is used for providing a flexible reflective display device which is more flexible in product design, simplified in processing and reduced in production cost by using a flexible printed circuit manufacturing technology and a flexible display technology combined as a basis and adopting a flexible circuit board multi-layer electrode design.

Description

Flexible reflective display device and manufacturing method thereof

technical field

The invention relates to a display device and a manufacturing method thereof, in particular to a flexible reflective display device and a manufacturing method thereof.

Background technique

In order to meet the needs of light, thin, easy storage and product design flexibility of electronic products, the substrate of its display panel has been developed from the traditional glass substrate to the flexible substrate. Influences from the future, such as dealing with thermal stability, deformation, surface characteristics, water resistance and other characteristics, the above-mentioned development of these technologies is a problem that must be solved in the future.

The processing of flexible substrates or related technologies have been disclosed in many patent documents, such as US Publication No. 2002/0180344 "Flexible electronic device (Flexible electronic device)", which discloses an electronic device with a flexible display panel , the schematic diagram of the device is shown in FIG. 1 , the flexible electronic device includes a flexible display panel 10 , a flexible circuit substrate 12 and a power terminal 14 .

Contents of the invention

The purpose of the present invention is to propose a mature technology using flexible printed circuit boards, and to match with appropriate structural design and display media, so as to effectively alleviate or avoid known problems.

The present invention proposes a method for manufacturing a flexible reflective display device, including providing an upper substrate and a lower substrate; forming a first electrode layer on the upper substrate; forming a second electrode layer on the lower substrate; forming a display medium layer between the upper substrate and the lower substrate; and forming an adhesive layer between the display medium layer and the lower substrate.

In the manufacturing method of the flexible reflective display device of the present invention, the upper substrate is made of transparent material.

According to the manufacturing method of the flexible reflective display device of the present invention, the first electrode layer is made of transparent conductive material.

According to the manufacturing method of the flexible reflective display device of the present invention, the lower substrate is a flexible printed circuit board.

The manufacturing method of the flexible reflective display device of the present invention, wherein the flexible printed circuit board is a single-layer board, a double-layer board or a multi-layer board.

According to the manufacturing method of the flexible reflective display device of the present invention, the second electrode layer can be an electrode designed with a multi-layer structure.

In the manufacturing method of the flexible reflective display device of the present invention, a conductive material layer can be further disposed between the first electrode layer and the second electrode layer.

In the manufacturing method of the flexible reflective display device according to the present invention, the electrode surface of the lower substrate facing the display medium layer can undergo a surface modification process to form a reflective, partially reflective or light-absorbing surface.

The manufacturing method of the flexible reflective display device according to the present invention, wherein the display medium layer is further provided with a microstructure, which is used to maintain the distance between the first electrode layer and the lower substrate, and limit the display between the microstructures The flow range of the medium.

In the manufacturing method of the flexible reflective display device of the present invention, the microstructure is formed by microcup or capsule processing.

The manufacturing method of the flexible reflective display device according to the present invention, wherein the microstructure is a closed structure or a non-closed structure.

The manufacturing method of the flexible reflective display device according to the present invention, wherein the closed structure is a quadrangular lattice structure, a hexagonal lattice structure or an irregular porous structure.

In the manufacturing method of the flexible reflective display device of the present invention, the non-enclosed structure is a columnar structure, a cross-shaped structure or an irregular structure.

The manufacturing method of the flexible reflective display device according to the present invention, wherein the display medium of the display medium layer is liquid crystal, a liquid mixture with liquid crystal as the main display driving component, or an electrophoretic display fluid.

The method for manufacturing a flexible reflective display device according to the present invention, wherein the display medium is a liquid crystal or a mixed liquid with liquid crystal as the main display driving component, and is formed by micro-cup microstructure treatment, and can be matched with an alignment film, a polarizing film, Design of various compensation films to produce flexible reflective displays in various modes.

In the manufacturing method of the flexible reflective display device of the present invention, the adhesive layer is made of transparent, dyed or light-absorbing materials.

According to the manufacturing method of the flexible reflective display device of the present invention, the type of the adhesive layer is film or liquid.

According to the manufacturing method of the flexible reflective display device of the present invention, the film-type adhesive layer is formed by hot pressing.

In the manufacturing method of the flexible reflective display device of the present invention, the liquid adhesive layer is formed by coating.

A flexible reflective display device of the present invention, comprising:

An upper substrate and a lower substrate;

a first electrode layer is formed on the upper substrate;

a second electrode layer is formed on the lower substrate;

a display medium layer is formed between the upper substrate and the lower substrate; and

An adhesive layer is formed between the display medium layer and the lower substrate.

According to the flexible reflective display device of the present invention, the upper substrate is made of transparent material.

According to the flexible reflective display device of the present invention, the first electrode layer is made of transparent material.

According to the flexible reflective display device of the present invention, the lower substrate is a flexible printed circuit board.

In the flexible reflective display device of the present invention, the flexible printed circuit board is designed as a slot structure so as to be connected with the driving circuit board.

In the flexible reflective display device of the present invention, the flexible printed circuit board can be directly designed as a driving circuit board.

According to the flexible reflective display device of the present invention, the second electrode layer can be an electrode designed with a multi-layer structure.

The flexible reflective display device of the present invention further includes a conductive material layer disposed between the first electrode layer and the second electrode layer.

A flexible reflective display device of the present invention, comprising:

a display area;

One upper substrate;

Look at the substrate;

A first outer pin bonding area is arranged on the upper substrate, and a wire is arranged in it to connect the driving signal to the electrode of the display area; and

A second outer pin bonding area is arranged on the lower substrate, and wires are arranged in it to connect driving signals to the electrodes of the display area.

According to the flexible reflective display device of the present invention, the upper substrate is made of transparent material.

According to the flexible reflective display device of the present invention, the lower substrate is a flexible printed circuit board.

In the flexible reflective display device of the present invention, the electrodes in the display area of the upper substrate and the electrodes in the display area of the lower substrate are parallel electrodes perpendicular to each other.

In the flexible reflective display device of the present invention, the first outer pin bonding area and the second outer pin bonding area are arranged on two adjacent sides of the display area.

According to the flexible reflective display device of the present invention, the first outer pin bonding area and the second outer pin bonding area are arranged on two opposite sides of the display area.

In the flexible reflective display device of the present invention, the first outer pin bonding area and the second outer pin bonding area are arranged on the same side of the display area.

In the flexible reflective display device of the present invention, the lower substrate electrode layer can be an electrode designed with a multi-layer structure.

In the flexible reflective display device of the present invention, an insulating layer is arranged between the upper electrode and the lower electrode of the lower substrate electrode layer.

The invention also proposes a flexible reflective display device and related embodiments of electrode layout matching the flexible reflective display device.

Description of drawings

FIG. 1 is a schematic diagram of a flexible electronic device of the known technology;

2 is a schematic diagram of a flexible reflective display device of the present invention;

3 is a schematic diagram of the first embodiment of the electrode layout of the present invention;

4 is a schematic diagram of a second embodiment of the electrode layout of the present invention;

5 is a schematic diagram of a first embodiment of a display medium layer of the present invention; and

FIG. 6 is a schematic diagram of a second embodiment of a display medium layer of the present invention.

Wherein, the reference signs are explained as follows:

Flexible display panel 10 Flexible circuit substrate 12

Power terminal 14 upper substrate 20

First electrode layer 22 Second electrode layer 24

Conductive material layer 26 Display dielectric layer 28

Microstructure 280 Lower Substrate 30

Adhesive layer 32 Soft reflective display device 40

Display area 400 The first electrode pad area 42

The second electrode pad area 44

Detailed ways

For the technology, method and effect that the present invention takes to achieve the intended purpose, please refer to the following detailed description and accompanying drawings of the present invention. The purpose, features and characteristics of the present invention can be obtained from this in-depth and specific understanding. However, the accompanying drawings It is provided for reference and illustration only, and is not intended to limit the present invention.

Please refer to FIG. 2, which is a schematic diagram of a flexible reflective display device of the present invention, including an upper substrate 20, which is a transparent material; a first electrode layer 22 is formed on the upper substrate 20, and the first electrode Layer 22 is a transparent conductive material; a second electrode layer 24 is formed on the lower substrate 30, wherein the second electrode layer 24 can be an electrode with a multi-layer structure design, and its more complicated electrode pattern design can also be arranged on the second electrode layer 24, and the lower substrate 30 is a flexible printed circuit board, the flexible printed circuit board is a single-layer board, double-layer board or multi-layer board and can be designed as a slot structure, so as to be connected with the drive circuit board, Or the flexible printed circuit board can directly apply the Chip on Flexible Printing Circuit Board (COF) technology, directly set the chip in the flexible printed circuit board structure, and integrate the driving circuit board and the display panel into the same structure; The conductive material layer 26 is between the first electrode layer 22 and the second electrode layer 24 .

A display medium layer 28 is formed between the upper substrate 20 and the lower substrate 30. The lower substrate 30 faces the electrode surface of the display medium layer 28. After a surface modification process, it can form a reflective, partially reflective or light-absorbing surface. On the surface, the display medium layer 28 is further provided with a microstructure 280 for maintaining the distance between the first electrode layer 22 and the lower substrate 30, and limiting the flow range of the display medium between the microstructure 280, wherein the microstructure 280 is formed by microcup or capsule processing. As shown in FIG. 5, the microstructure formed by microcup processing is shown, while FIG. It is closed or non-closed. If the microstructure 280 is a closed structure, it can be a quadrilateral lattice structure, a hexagonal lattice structure or an irregular porous structure. However, if the microstructure 280 is a non-closed When the structure is shaped, it can be a columnar structure, a cross structure or an irregular structure.

The display medium of the display medium layer 28 can be a liquid crystal, a mixed liquid with liquid crystal as the main display driving component, or an electrophoretic display fluid. If the display medium is a liquid crystal or a mixed liquid with liquid crystal as the main display driving component, and the Formed by microstructure processing, it can be further matched with the design of alignment film, polarizing film, and various compensation films to produce a variety of flexible reflective displays in different modes. If the display medium is a reflective display medium (such as cholesteric liquid crystal) Or a scattering display medium (such as a polymer distributed liquid crystal), then a light-absorbing layer or a dyed layer can be arranged under the display medium microcup microstructure or capsule microstructure to facilitate the optical design effect; an adhesive layer 32 forms Between the display medium layer 28 and the lower substrate 30, the adhesive layer 32 is a transparent, dyed or light-absorbing material, which can form a film-type adhesive layer by hot pressing or a liquid-type adhesive layer by coating. .

Please refer to FIG. 3, which is a schematic diagram of the first embodiment of the electrode layout of the present invention, including a flexible reflective display device, wherein the flexible reflective display device includes a display area 400, an upper substrate and a lower substrate, and the upper substrate is transparent material and the electrodes of the display area of the upper substrate and the electrodes of the display area of the lower substrate are parallel electrodes perpendicular to each other; An insulating layer can be set between the electrodes. This insulating layer has the effect of a flat layer, so that the pull wire of the lower electrode will not affect the surface roughness of the upper electrode. Using the pattern design of the lower electrode, the connection point of the electrode is pulled to the panel. On the right side, the panel design shown in Figure 4 can be formed.

A first outer pin bonding area (bonding area) 42 is arranged on the upper substrate, and a wire is arranged in it to connect the driving signal to the display area electrode, wherein the first electrode layer is a transparent material; a second outer lead The pin bonding area 44 is arranged on the lower substrate, and wires are arranged in it to connect the driving signal to the display area electrodes, wherein the first external pin bonding area 42 and the second external pin bonding area 44 can be arranged on the The adjacent two sides, opposite sides or the same side of the display area, as shown in Figure 3 and Figure 4, wherein Figure 3 shows that the first outer pin bonding area 42 and the second outer pin bonding area 44 are arranged on the The adjacent two sides of the display area 400, however, when this embodiment is actually implemented on the panel, the panel will not be able to fully exert the characteristics of its flexible panel, but if the design of the multilayer electrodes of the flexible circuit board is used, the first outer pin bonding area 42 and the second outer pin bonding area 44 are arranged on the same side of the display area 400 or as shown in the fourth figure to achieve the effect of pulling wires on both sides, so that the flexible panel can take advantage of its soft characteristics and be practically applied to product design.

The flexible display structure proposed by the present invention is based on the combination of flexible printed circuit manufacturing technology and flexible display technology to produce a flexible reflective display device to simplify processing and reduce production costs. Due to the existing flexible printed circuit The board manufacturing technology is quite mature, so the design of the product can have considerable flexibility, which can fully highlight the characteristics brought by the flexible display.

The present invention clearly can provide a design that is completely different from the known design by means of the above-mentioned disclosed technology, and can improve the overall use value. The drawings and descriptions disclosed above are only embodiments of the present invention, and those skilled in the art can make other various improvements based on the above descriptions, and these changes still belong to the inventive concept of the present invention and the following aspects of the present invention within the scope of the claims.

Claims (36)

1. the manufacture method of a flexible reflective display comprises:

One upper substrate and an infrabasal plate are provided;

Form one first electrode layer in this upper substrate;

Form a second electrode lay in this infrabasal plate;

Form a display dielectric layer between this upper substrate and this infrabasal plate; And

Form a gluing layer between this display dielectric layer and this infrabasal plate.

2. the manufacture method of flexible reflective display as claimed in claim 1 is characterized in that, this upper substrate is a transparent material.

3. the manufacture method of flexible reflective display as claimed in claim 1 is characterized in that, this first electrode layer is a transparent conductive material.

4. the manufacture method of flexible reflective display as claimed in claim 1 is characterized in that, this infrabasal plate is a flexible printed wiring board.

5. the manufacture method of flexible reflective display as claimed in claim 4 is characterized in that, this flexible printed wiring board is lamina, doubling plate or multilayer board.

6. the manufacture method of flexible reflective display as claimed in claim 1 is characterized in that, this second electrode lay can be the electrode of sandwich construction design.

7. the manufacture method of flexible reflective display as claimed in claim 1 is characterized in that, a conductive material layer further can be set between this first electrode layer and this second electrode lay.

8. the manufacture method of flexible reflective display as claimed in claim 4 is characterized in that, this infrabasal plate is towards the electrode surface of display dielectric layer, can be reflective to form through surfaction processing, the surface of reflective or extinction partly.

9. the manufacture method of flexible reflective display as claimed in claim 1, it is characterized in that, this display dielectric layer more is provided with a microstructure, is used for keeping the distance between this first electrode layer and this infrabasal plate, and limits the flow range of the display medium between this microstructure.

10. the manufacture method of flexible reflective display as claimed in claim 9 is characterized in that, this microstructure is with little cup type or capsule-type processing formation.

11. the manufacture method of flexible reflective display as claimed in claim 9 is characterized in that, this microstructure is enclosed shape structure or non-enclosed shape structure.

12. the manufacture method of flexible reflective display as claimed in claim 11 is characterized in that, this enclosed shape structure is quadrilateral grating texture, hexagon trellis structure or irregular cellular structure.

13. the manufacture method of flexible reflective display as claimed in claim 11 is characterized in that, this non-enclosed shape structure is column structure, decussate texture or irregular shape structure.

14. the manufacture method of flexible reflective display as claimed in claim 1 is characterized in that, the display medium of this display dielectric layer is liquid crystal, is the mixed liquor or the electrophoresis showed fluid of main display driver composition with liquid crystal.

15. the manufacture method of flexible reflective display as claimed in claim 14, it is characterized in that, this display medium is liquid crystal or is the mixed liquor of main display driver composition with liquid crystal, and handle formation with little cup type microstructure, can the arrange in pairs or groups design of alignment film, light polarizing film, various compensate film is to produce the flexible reflective display of various different modes.

16. the manufacture method of flexible reflective display as claimed in claim 1 is characterized in that, this gluing layer is transparent, dyeing or light absorbent.

17. the manufacture method of flexible reflective display as claimed in claim 1 is characterized in that, the pattern of this gluing layer is film or liquid state.

18. the manufacture method of flexible reflective display as claimed in claim 17 is characterized in that, this film-type gluing layer is formed by hot pressing mode.

19. the manufacture method of flexible reflective display as claimed in claim 17 is characterized in that, this liquid-type gluing layer is formed by coating method.

20. a flexible reflective display comprises:

One upper substrate and an infrabasal plate;

One first electrode layer is formed at this upper substrate;

One the second electrode lay is formed at this infrabasal plate;

One display dielectric layer is formed between this upper substrate and this infrabasal plate; And

One gluing layer is formed between this display dielectric layer and this infrabasal plate.

21. flexible reflective display as claimed in claim 20 is characterized in that, this upper substrate is a transparent material.

22. flexible reflective display as claimed in claim 20 is characterized in that, this first electrode layer is a transparent material.

23. flexible reflective display as claimed in claim 20 is characterized in that, this infrabasal plate is a flexible printed wiring board.

24. flexible reflective display as claimed in claim 23 is characterized in that, this flexible printed wiring board is designed to inserting slot construction, so that and drive circuit board binding.

25. flexible reflective display as claimed in claim 23 is characterized in that, this flexible printed wiring board can directly be designed to drive circuit board.

26. flexible reflective display as claimed in claim 20 is characterized in that, this second electrode lay can be the electrode of sandwich construction design.

27. flexible reflective display as claimed in claim 20 is characterized in that, more comprises a conductive material layer and is arranged between this first electrode layer and this second electrode lay.

28. a flexible reflective display comprises:

One viewing area;

One upper substrate;

One infrabasal plate;

One first outer pin bonding land is arranged on this upper substrate, is laid with lead in it and can connects drive signal to the viewing area electrode; And

One second outer pin bonding land is arranged on this infrabasal plate, is laid with lead in it and can connects drive signal to the viewing area electrode.

29. flexible reflective display as claimed in claim 28 is characterized in that, this upper substrate is a transparent material.

30. flexible reflective display as claimed in claim 28 is characterized in that, this infrabasal plate is a flexible printed wiring board.

31. flexible reflective display as claimed in claim 28 is characterized in that, the electrode of the electrode of this upper substrate viewing area and this infrabasal plate viewing area is vertical each other parallel pole.

32. flexible reflective display as claimed in claim 28 is characterized in that, this first outer pin bonding land and this second outer pin bonding land are in the layout of the adjacent both sides of this viewing area.

33. flexible reflective display as claimed in claim 28 is characterized in that, this first outer pin bonding land and this second outer pin bonding land are in the layout of the relative both sides of this viewing area.

34. flexible reflective display as claimed in claim 28 is characterized in that, this first outer pin bonding land and this second outer pin bonding land are in the layout of the homonymy of this viewing area.

35. flexible reflective display as claimed in claim 28 is characterized in that, this infrabasal plate electrode layer can be the electrode of sandwich construction design.

36. flexible reflective display as claimed in claim 35 is characterized in that, is provided with an insulation course between the upper electrode of this infrabasal plate electrode layer and this lower electrode.

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