Segment code display panel and electronic paper display device

Abstract

The utility model discloses a segment code display panel and an electronic paper display device, and relates to the technical field of display. The segment code display panel comprises a base material, a first electrode and a second electrode, the circuit layer is arranged on the base material; the insulating layer is arranged on one side, far away from the base material, of the circuit layer; the via hole is formed in the insulating layer; and the pattern layer is arranged on one side, far away from the circuit layer, of the insulating layer. The EPD dot matrix display module solves the problems that an existing EPD dot matrix display module is usually made of a TFT glass substrate, and due to the fact that display patterns of a segment code pattern type EDP display module are generally complex, complex punching and wiring need to be carried out on the substrate; and the glass substrate basically cannot meet the punching and wiring requirements, so that the problem that the glass substrate cannot be used for manufacturing a relatively complicated EPD segment code display screen module exists.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a segment display panel and an electronic paper display device. Background Technology

[0002] Electronic paper technology is actually a general term for a class of technologies, with the English name E-paper. It mostly uses electrophoresis display (EPD) technology as the display panel. Its display effect is close to that of natural paper, eliminating reading fatigue. It has the characteristics of ultra-low energy consumption, strong readability in sunlight, and low production cost.

[0003] EPD is an electrophoretic display technology, also known as electrophoretic display. It is an early development of paper-like display technology. It uses charged spheres of different colors to move up and down repeatedly in a liquid environment by an external electric field, presenting different color display effects.

[0004] However, current EPD dot matrix display modules are typically made using TFT glass substrates. Segment graphic EPD display modules, due to their generally complex display graphics, require intricate drilling and wiring on the substrate; furthermore, glass substrates are generally unsuitable for drilling and wiring requirements. Therefore, there is a problem that glass substrates cannot be used to manufacture complex EPD segment display modules. Currently, the industry has not proposed an effective solution to these problems. Utility Model Content

[0005] Purpose of the utility model: To provide a segment display panel and an electronic paper display device to at least solve one of the problems existing in the prior art.

[0006] Technical solution: A segment code display panel, comprising:

[0007] Substrate;

[0008] A circuit layer is disposed on the substrate;

[0009] An insulating layer is disposed on the circuit layer on the side away from the substrate;

[0010] Vias are formed on the insulating layer; and

[0011] A pattern layer is disposed on the insulating layer on the side away from the circuit layer;

[0012] The patterned layer is electrically connected to the circuit layer through the vias to form a flexible substrate structure.

[0013] Preferably, the substrate is a flexible PET substrate.

[0014] Preferably, the circuit layer is a silver paste trace layer or an oxide conductive layer, and the pattern layer is a carbon paste pattern layer.

[0015] To achieve the above objectives, according to another aspect of this application, an electronic paper display device is also provided.

[0016] The electronic paper display device according to this application includes the segment display panel described above;

[0017] It also includes: an electronic ink film disposed on a flexible substrate, a protective film disposed on the side of the electronic ink film away from the flexible substrate, and the outer edge of the electronic ink film forming a semi-open filling cavity with the protective film and the flexible substrate respectively.

[0018] Preferably, the filling cavity is surrounded by sealant.

[0019] Preferably, the thickness of the flexible substrate structure is 0.1-0.3 mm.

[0020] Preferably, the flexible substrate structure has through holes or irregular shapes.

[0021] Preferably, one end of the flexible substrate structure is provided with a reserved section, and the reserved section is provided with a driving interface.

[0022] Preferably, the reserved section is provided with a reinforcing plate at the drive interface.

[0023] Preferably, the system further includes a driver chip, which is mounted on the main control board and electrically connected to the driver interface.

[0024] Beneficial effects: In the embodiments of this application, an optimized structure is adopted, in which the pattern layer is electrically connected to the circuit layer through the via to form a flexible substrate structure, achieving the purpose of flexible use. This realizes the technical effect of reducing production costs and improving performance, and solves the technical problems that EPD dot matrix display modules are usually made of TFT glass substrates, segment graphic EPD display modules are generally more complex and require complex drilling and wiring on the substrate; and glass substrates are basically unable to meet the requirements of drilling and wiring, so there is a technical problem that glass substrates cannot be used to manufacture more complex EPD segment display modules. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the flexible substrate structure of this utility model; and

[0026] Figure 2 This is a schematic diagram of the electronic paper display device of this utility model.

[0027] The attached figures are labeled as follows:

[0028] 10. Substrate;

[0029] 20. Line layer;

[0030] 30. Insulation layer;

[0031] 40. Graphics layer;

[0032] 50. Electronic ink film;

[0033] 60. Protective film;

[0034] 70. Sealant;

[0035] 80. Reserved section; 801. Drive interface; 802. Reinforcing plate

[0036] 90. Flexible substrate structure. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] like Figure 1-2 As shown, this application relates to a segment display panel and an electronic paper display device. The segment display panel includes a substrate 10; the substrate 10 refers to a carrier with supporting and load-bearing functions, serving as a physical base layer upon which other materials or structures are typically deposited, bonded, or assembled. Preferably, the substrate 10 is a flexible PET substrate 10, which provides good physical properties.

[0042] The circuit layer 20 is disposed on the substrate 10; by providing the circuit layer 20, a circuit path can be provided, thereby realizing the electrical connection between electronic components; at the same time, it is the basic layer for realizing the electrical function of the flexible substrate.

[0043] It is important to know that the circuit layer 20 mainly uses metallic materials (such as copper and silver) or other conductive materials.

[0044] An insulating layer 30 is disposed on the circuit layer 20 on the side away from the substrate 10; it can achieve good electrical isolation, thereby preventing the circuit layer 20 from short-circuiting with other conductive parts.

[0045] Vias, formed on the insulating layer 30, provide electrical connection channels, thereby facilitating good electrical connection between layers.

[0046] The pattern layer 40 is disposed on the insulating layer 30 on the side away from the circuit layer 20; it integrates the overall circuit function with the circuit layer 20 through vias, and can also provide additional circuit functions, such as electrodes or other required circuit configurations.

[0047] The pattern layer 40 is electrically connected to the circuit layer 20 through the vias to form a flexible substrate structure 90. This achieves good electrical connection, thereby enabling the formation of the flexible substrate structure 90.

[0048] Specifically, the traditional 0.5mm TFT substrate is replaced with a 0.1mm flexible PET substrate. The PET flexible substrate structure consists of a substrate layer 10 + a carbon paste layer + an insulating layer 30 + a silver paste wiring layer. This achieves the goals of reducing the production cost of EPD segment code modules, reducing the thickness of EPD segment code modules, and achieving flexibility and bendability.

[0049] The flexible substrate structure 90 is prepared as follows: First, a silver paste wiring layer is printed on the PET substrate 10. An insulating layer 30 is then attached to the silver paste wiring layer. Next, a carbon paste pattern layer 40 is printed on the insulating layer 30. The carbon paste pattern layer 40 and the silver paste wiring layer are connected by drilling.

[0050] As can be seen from the above description, this application achieves the following technical effects:

[0051] In this embodiment, an optimized structure is adopted, in which the pattern layer 40 is electrically connected to the circuit layer 20 through the vias to form a flexible substrate structure 90, achieving the purpose of flexible use. This realizes the technical effect of reducing production costs and improving performance, and solves the technical problems that EPD dot matrix display modules are usually made of TFT glass substrates, segment graphic EPD display modules are generally more complex and require complex drilling and wiring on the substrate; and glass substrates are basically unable to meet the requirements of drilling and wiring, so there is a technical problem that glass substrates cannot be used to make more complex EPD segment display modules.

[0052] Furthermore, the substrate 10 is a flexible PET substrate 10. It is understood that the flexible PET substrate 10 refers to polyethylene terephthalate, which has good mechanical strength, flexibility, and chemical resistance; for example, flexibility: PET film has certain bending and stretching properties, which can meet the requirements of flexible electronic devices.

[0053] Furthermore, the circuit layer 20 is a silver paste trace layer or an oxide conductive layer, and the pattern layer 40 is a carbon paste pattern layer. It is understood that the silver paste trace layer forms a circuit through coating, printing, or spraying of a conductive paste with silver paste as the main component. The oxide conductive layer is a thin film layer made of metal oxides (such as indium tin oxide (ITO) or zinc aluminum oxide (AZO). Of course, the choice can be made according to the actual situation, and no limitation is imposed in this application.

[0054] The carbon paste in the carbon paste pattern layer 40 is a conductive paste with carbon nanoparticles or graphite particles as the main components.

[0055] This application also relates to an electronic paper display device, including the segment display panel described above;

[0056] It also includes: an electronic ink film 50 disposed on a flexible substrate, a protective film 60 disposed on the side of the electronic ink film 50 away from the flexible substrate, and the outer edge of the electronic ink film 50 forming a semi-open filling cavity with the protective film 60 and the flexible substrate respectively. It can be understood that by sequentially stacking the protective film 60, the electronic ink film 50, and the PET flexible substrate from top to bottom, a stable electronic display structure can be formed, thereby ensuring good display effects. Simultaneously, the semi-open filling cavity, or groove, formed by the outer edge of the electronic ink film 50 with the adjacent protective film 60 and the substrate provides a foundation and guarantee for subsequent material filling. The protective film 60 is a PS water-blocking film, which can achieve good water-blocking and waterproof effects; the electronic ink film 50 is an FPL ink film.

[0057] Furthermore, a sealant 70 is provided around the filling cavity; by providing a sealant 70, i.e., an edge sealant (EC edge sealant), around the first filling cavity, a good sealing effect can be achieved, thereby improving the service life of the electronic ink film 50; at the same time, it can also improve the structural strength.

[0058] Furthermore, the thickness of the flexible substrate structure 90 is 0.1-0.3 mm. It is understood that multiple thicknesses can be selected, thus achieving flexible use and meeting various application requirements. Preferably, the thickness of the flexible substrate structure 90 is 0.1 mm.

[0059] Furthermore, the flexible substrate structure 90 has through holes or irregular shapes. It is understood that...

[0060] Furthermore, a reserved section 80 is provided at one end of the flexible substrate structure 90, and a driving interface 801 is provided on the reserved section 80. It is understood that...

[0061] Furthermore, a reinforcing plate 802 is provided at the drive interface 801 in the reserved section 80. This can be understood as improving strength, thereby ensuring the stability of the structure at the drive interface 801.

[0062] Furthermore, it also includes a driver chip, which is mounted on the main control board and electrically connected to the driver interface 801. This ensures a good electrical connection and thus guarantees good electrical signal interaction. Because the driving method of the EPD segment display module is relatively simple, it generally does not require designing a driver IC on the module itself; the driver IC can be placed on the motherboard. Therefore, the bezel of the EPD segment display screen can be made narrower. At the same time, the driver interface 801 for the EPD segment display graphics can be designed as a single unit with the PET substrate, eliminating the need for a separately manufactured FPC part, simplifying the manufacturing process of the EPD segment module, and reducing its manufacturing cost.

[0063] It is important to know that a driver IC is a chip that integrates multiple functional modules and is used to control and drive the operation of other electronic devices.

[0064] Preferably, the main control board 30 can be an EPD driver development board, a Good Display EPD motherboard, or an STM32 driver motherboard, etc., which can achieve the effect of having multiple models to choose from, thereby achieving the effect of flexible use.

[0065] This application also has the following beneficial effects:

[0066] 1. Replacing the 0.5mm TFT glass substrate with a 0.1mm PET flexible substrate has the following advantages: Since it is inconvenient to drill holes and route lines on the glass substrate and design irregular shapes, it is convenient to design segment code patterns and routes on the flexible substrate after replacing it with a PET substrate. In addition, holes can be drilled in the middle of the PET substrate or irregular shapes can be designed. While meeting the needs of different customers, the overall thickness of the EPD segment code display module can be reduced.

[0067] 2. Setting the driver IC of the EPD segment display module on the motherboard has the following effects: it eliminates the IC bonding process, reduces the bezel of the EPD display module, and increases the screen ratio.

[0068] 3. Designing the drive interface 801 and the PET flexible substrate as a whole has the following effect: eliminating the need for FPC design and bonding processes, and reducing the development cost of EPD segment display screens.

[0069] This application also relates to an electronic paper display device, including the segment display panel as described above. The electronic paper display device using the segment display panel provided in this embodiment has the same basic principle and technical effects as the above embodiment. For any parts not mentioned in this embodiment, please refer to the corresponding content above.

[0070] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. An electronic paper display device, characterized in that, Includes a segment code display panel, the segment code display panel including: Substrate (10); A circuit layer (20) is disposed on the substrate (10); An insulating layer (30) is disposed on the circuit layer (20) on the side away from the substrate (10); Vias are formed on the insulating layer (30); and A pattern layer (40) is disposed on the insulating layer (30) on the side away from the circuit layer (20); The pattern layer (40) is electrically connected to the circuit layer (20) through the via to form a flexible substrate structure (90); It also includes: an electronic ink film (50) disposed on a flexible substrate, a protective film (60) disposed on the side of the electronic ink film (50) away from the flexible substrate, and the outer edge of the electronic ink film (50) forming a semi-open filling cavity with the protective film (60) and the flexible substrate respectively.

2. The electronic paper display device according to claim 1, characterized in that, The filling cavity is surrounded by sealant (70).

3. The electronic paper display device according to claim 1, characterized in that, The thickness of the flexible substrate structure (90) is 0.1-0.3 mm.

4. The electronic paper display device according to claim 1, characterized in that, The flexible substrate structure (90) has through holes or irregular shapes.

5. The electronic paper display device according to claim 1, characterized in that, One end of the flexible substrate structure (90) is provided with a reserved section (80), and a driving interface (801) is provided on the reserved section (80).

6. The electronic paper display device according to claim 5, characterized in that, The reserved section (80) is provided with a reinforcing plate (802) at the drive interface (801).

7. The electronic paper display device according to claim 5, characterized in that, Also includes: A driver chip is mounted on the main control board and is electrically connected to the driver interface (801).

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