Driving substrate and nixie tube electronic paper display device

Abstract

The utility model discloses a driving substrate and a nixie tube electronic paper display device. The driving substrate includes a substrate body and a metal image. The metal image is disposed on the substrate body. The metal image is divided into a plurality of independent metal image units. Each metal image unit comprises an enclosure frame and a main body surface. The enclosure frame is printed by using a first conductive material to form a frame corresponding to the metal image unit. The main body surface is formed by filling the enclosure frame with a second conductive material. The fluidity of the second conductive material is higher than that of the first conductive material. The flow of the second conductive material is limited through the enclosure frame formed by the first conductive material, so that when the first conductive material is printed, the gap between the two adjacent metal image units can be reduced by reducing the distance between the two adjacent enclosure frames; therefore, the problem that the manufacturing process capability is limited due to the fact that the second conductive material is directly used for printing the metal image units at present can be solved, and the gap between every two adjacent metal image units is reduced to the maximum extent.

Description

Technical Field

[0001] This application relates to a digital tube display device, and more particularly to a driving substrate and a digital tube electronic paper display device. Background Technology

[0002] Digital tube displays are characterized by high efficiency, low cost, and low power consumption. They are suitable for everyday applications such as calculators and smartwatches, where resolution requirements are relatively low. Digital tube displays design a corresponding metal pattern on the substrate as the lower driving layer, based on the specific application scenario. The metal pattern is then driven to drive the corresponding display area above it to achieve the display effect, such as driving liquid crystal or electronic ink.

[0003] However, in actual imaging, since metal images need to be driven separately, the metal images need to be segmented to form multiple independent metal image units, such as... Figure 1 As shown, there is no metal connection between adjacent metal image units. However, since the materials currently used for printing metal images are highly fluid and conductive, a certain gap A needs to be reserved between adjacent metal image units to avoid short circuits caused by printing process issues. Limited by current manufacturing capabilities, this gap A is typically 0.15-0.2 mm, and it is difficult to reduce it to 0.1 mm. This results in a visible gap on the front of the display area during image development. Therefore, how to reduce the gap A between adjacent metal image units is a problem that digital tube display devices urgently need to solve. Utility Model Content

[0004] This application provides a driving substrate and a digital tube electronic paper display device to solve the problem that the gap between adjacent metal image units is large due to the limitation of current manufacturing process capabilities.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, a driving substrate is provided, comprising a substrate body and a metal image. The metal image is disposed on the substrate body. The metal image is divided into multiple independent metal image units. Each metal image unit includes a frame and a main surface. The frame is printed using a first conductive material to form the border of the corresponding metal image unit. The main surface is formed by filling the frame with a second conductive material. The frame is electrically connected to the main surface. The second conductive material has a higher fluidity than the first conductive material.

[0007] In one embodiment, the minimum gap between two adjacent metal image units is 0.05 mm.

[0008] In one embodiment, the first conductive material is silver paste.

[0009] In one embodiment, the width of the frame is 0.05 mm.

[0010] In one embodiment, the height of the enclosure is 6 μm.

[0011] In one embodiment, the upper surface of the main body is flush with the upper surface of the frame.

[0012] In one embodiment, the second conductive material is carbon paste.

[0013] In one embodiment, the substrate body uses a PET substrate.

[0014] In a second aspect, a digital tube electronic paper display device is provided, comprising a driving substrate, an insulating layer, an upper driving circuit layer, an electronic ink layer, and a waterproof layer, as described in any one of the first aspects. The insulating layer is disposed on a metallic image on the driving substrate. The upper driving circuit layer is disposed on the insulating layer. The driving circuits of the upper driving circuit layer correspond to the metallic image. The electronic ink layer is disposed on the upper driving circuit layer. The waterproof layer is disposed on the electronic ink layer.

[0015] In one embodiment, the waterproof layer covers the electronic ink layer, the upper driving circuit layer, the insulating layer, and the metal image, and is in contact with the metal image along the periphery of the substrate body to form a waterproof area.

[0016] In this embodiment, a first conductive material is first used to print a border for the corresponding metal image unit onto the substrate body. Then, a second conductive material is used to fill the border, and the second conductive material has a higher fluidity than the first conductive material. The border formed by the first conductive material restricts the flow of the second conductive material. Thus, when printing the first conductive material, the gap between adjacent metal image units can be reduced by decreasing the distance between two adjacent borders. This solves the process capability limitation problem of directly using the second conductive material (a high-fluidity conductive material) to print metal image units, and can minimize the gap between two adjacent metal image units. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of two adjacent metal image units in the current metal image;

[0019] Figure 2This is a cross-sectional schematic diagram of the driving substrate according to the first embodiment of this application;

[0020] Figure 3 This is a cross-sectional schematic diagram of the frame disposed on the substrate body according to the first embodiment of this application;

[0021] Figure 4 This is a schematic diagram of two adjacent metal image units of the metal image according to the first embodiment of this application;

[0022] Figure 5 This is a cross-sectional schematic diagram of the digital tube electronic paper display device according to the second embodiment of this application.

[0023] The following explanation is based on the accompanying diagram:

[0024] 1: Driving substrate; 2: Substrate body; 21: First surface; 22: Second surface; 3: Metal image; 31: Metal image unit; 311: Frame; 312: Main surface; 10: Digital tube electronic paper display device; 20: Insulating layer; 30: Upper driving circuit layer; 40: Electronic ink layer; 50: Waterproof layer; 60: Waterproof area. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] Please see Figures 2 to 4 , Figure 2 and Figure 3 These are cross-sectional schematic diagrams of the driving substrate and the surrounding frame disposed on the substrate body according to the first embodiment of this application. Figure 4This is a schematic diagram of two adjacent metal image units of the metal image according to the first embodiment of this application; as shown, the driving substrate 1 of this embodiment is mainly used in digital tube display devices, especially digital tube electronic paper display devices. In this embodiment, the driving substrate 1 includes a substrate body 2 and a metal image 3. The substrate body 2 has a first surface 21 and a second surface 22, which are located on opposite sides. The substrate body 2 uses a PET substrate. The metal image 3 is disposed on the first surface 21 of the substrate body 2. The metal image 3 is divided into multiple independent metal image units 31, where "independent" means that each metal image unit 31 is not electrically connected to each other, so as to enable multiple metal image units 31 to be driven separately.

[0028] As described above, each metal image unit 31 includes a frame 311 and a main surface 312. The frame 311 is formed by printing a first conductive material onto the first surface 21 of the substrate body 2 to form the border of the corresponding metal image unit 31. The width of the frame 311 is 0.05 mm. The height of the frame 311 is 6 μm. The main surface 312 is formed by filling the frame 311 with a second conductive material. After the second conductive material fills and solidifies the frame 311, the main surface 312 and the frame 311 form an integral metal image unit 31. Here, "filling" means that the upper surface of the main surface 312 is flush with the upper surface of the frame 311. The frame 311 and the main surface 312 are electrically connected. The second conductive material has a higher fluidity than the first conductive material; in other words, the first conductive material is a low-fluidity conductive material, and the second conductive material is a high-fluidity conductive material. The first conductive material is silver paste, and the second conductive material is carbon paste. Since the first conductive material has lower fluidity than the second conductive material, the distance between two adjacent frames 311 can be minimized when printing the frame 311.

[0029] In this embodiment, the driving substrate 1 first prints a frame corresponding to the metal image unit 31 on the substrate body 2 using a first conductive material, and then fills the frame 311 with a second conductive material, wherein the flowability of the second conductive material is higher than that of the first conductive material. In this embodiment, the driving substrate 1 restricts the flow of the second conductive material through the frame 311 formed by the first conductive material. Thus, when printing the first conductive material, the gap A between adjacent metal image units 31 can be reduced by decreasing the distance between two adjacent frames 311. This solves the process capability limitation problem of directly printing metal image units 31 using the second conductive material, and can minimize the gap A between adjacent metal image units 31 to a maximum of 0.05 nm.

[0030] Please see Figure 5Figure 10 is a cross-sectional schematic diagram of a digital tube electronic paper display device according to the second embodiment of this application. As shown, the digital tube electronic paper display device 10 of this embodiment includes a driving substrate 1, an insulating layer 20, an upper driving circuit layer 30, an electronic ink layer 40, and a waterproof layer 50 as described in the first embodiment. The insulating layer 20 is disposed on the metal image 3 of the driving substrate 1 and is in contact with the metal image 3. The upper driving circuit layer 30 is disposed on the insulating layer 20 and is in contact with the insulating layer 20. The electronic ink layer 40 is disposed on the upper driving circuit layer 30 and is in contact with the upper driving circuit layer 30. The waterproof layer 50 is disposed on the electronic ink layer 40 and is in contact with the electronic ink layer 40.

[0031] As described above, the driving lines of the upper driving line layer 30 correspond to the metal image 3. The metal image 3 is equivalent to the lower driving line. The upper driving line layer 30 is a conductive ink layer, such as a conductive ink layer formed of silver, copper, or carbon, and the thickness of the upper driving line layer 30 is between 5μm and 15μm. The thickness of the insulating layer 20 between the upper driving line layer 30 and the metal image 3 is between 10μm and 20μm. In this embodiment, the digital tube electronic paper display device 10 can design a corresponding metal image 3 as the lower driving line on the substrate body 2 according to the actual application scenario, and then drive the positively charged colored particles and negatively charged colored particles in the corresponding electronic ink layer 40 above it to move up and down to achieve the display effect.

[0032] In this embodiment, the waterproof layer 50 covers the electronic ink layer 40, the upper driving circuit layer 30, the insulating layer 20, and the metal image 3, and forms a waterproof area 60 by contacting and connecting with the metal image 3 along the periphery of the substrate body 2. That is, the waterproof area 60 is formed along the periphery of the substrate body 2 and around the upper driving circuit layer 30 and the electronic ink layer 40. The waterproof layer 50 can be made of crystal glue or UV glue.

[0033] In summary, this application provides a driving substrate and a digital tube electronic paper display device. First, a first conductive material is printed on the substrate body to form a border corresponding to a metal image unit. Then, a second conductive material is used to fill the border, and the second conductive material has a higher fluidity than the first conductive material. The border formed by the first conductive material restricts the flow of the second conductive material. Thus, when printing the first conductive material, the gap between adjacent metal image units can be reduced by decreasing the distance between adjacent borders. This solves the process capability limitations of directly printing metal image units using the second conductive material, and minimizes the gap between adjacent metal image units.

[0034] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0035] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A driving substrate, characterized in that, include: substrate body; A metal image is disposed on the substrate body. The metal image is divided into multiple independent metal image units. Each metal image unit includes a frame and a main surface. The frame is formed by printing a first conductive material to form a border corresponding to the metal image unit. The main surface is formed by filling the frame with a second conductive material. The frame is electrically connected to the main surface. The second conductive material has a higher fluidity than the first conductive material.

2. The driving substrate according to claim 1, characterized in that, The minimum gap between two adjacent metal image units is 0.05 mm.

3. The driving substrate according to claim 1, characterized in that, The first conductive material is silver paste.

4. The driving substrate according to claim 1, characterized in that, The width of the frame is 0.05 mm.

5. The driving substrate according to claim 1, characterized in that, The height of the enclosure is 6 μm.

6. The driving substrate according to claim 1, characterized in that, The upper surface of the main body is flush with the upper surface of the frame.

7. The driving substrate according to claim 1, characterized in that, The second conductive material is carbon paste.

8. The driving substrate according to claim 1, characterized in that, The substrate body uses a PET substrate.

9. A digital tube electronic paper display device, characterized in that, include: The driving substrate as described in any one of claims 1-8; An insulating layer is disposed on the metal image of the driving substrate; An upper driving circuit layer is disposed on the insulating layer, and the driving circuits of the upper driving circuit layer correspond to the metal image; An electronic ink layer is disposed on the upper driving circuit layer; A waterproof layer is disposed on the electronic ink layer.

10. The digital tube electronic paper display device according to claim 9, characterized in that, The waterproof layer covers the electronic ink layer, the upper driving circuit layer, the insulating layer, and the metal image, and is in contact with the metal image along the periphery of the substrate body to form a waterproof area.

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