A segment display screen and its manufacturing method

Abstract

The application provides a segment code display screen and a preparation method thereof. The segment code display screen comprises a substrate, a display electrode on a part of a surface of one side of the substrate, electronic ink on one side of the substrate and in contact with the display electrode, a common electrode on a surface of one side of the electronic ink away from the substrate, an insulating layer on a surface of one side of the common electrode away from the substrate, a wiring electrode on a part of a surface of one side of the insulating layer away from the substrate, and a connecting wire penetrating through the electronic ink, the common electrode and the insulating layer, one end of the connecting wire being connected with the display electrode, and the other end of the connecting wire being connected with the wiring electrode. Since there is no electronic ink between the wiring electrode and the display electrode, even if there is an electric field between the wiring electrode and the display electrode, the segment code display screen will not display the pattern of the wiring electrode, and thus the display effect of the segment code display screen is improved.

Description

Technical Field

[0001] This invention relates to the field of display technology, specifically to a segment display screen and its manufacturing method. Background Technology

[0002] Segment displays are widely used in various display industries due to their low price and mature technology. They mainly consist of a certain number of display segments. Under the control of the control system, the display segments are combined in different ways to convey information such as numbers, letters, and graphics.

[0003] However, the display quality of segment display screens provided by existing technologies needs improvement, such as... Figure 1 As shown, the electronic ink 3a on the substrate 1a in the segment display is mainly affected by the electric field formed by the common electrode 4a and the display electrode 2a to achieve the display purpose. The display electrode 2a is connected to the wiring electrode 6a through the connecting wire 7a. When the segment display is working, an electric field is also formed between the common electrode 4a and the wiring electrode 6a. Under the action of the electric field formed by the common electrode 4a and the wiring electrode 6a, the electronic ink 3a will display unnecessary patterns of the wiring electrode 6a, which affects the visual effect of the segment display. Therefore, the structure of the segment display needs to be improved. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem that segment display screens in the prior art are prone to displaying wire electrode patterns, which affects the display effect, thereby providing a segment display screen and its preparation method.

[0005] This invention provides a segment display screen, comprising: a substrate; a display electrode located on a portion of the surface of the substrate; electronic ink located on the side of the substrate and in contact with the display electrode; a common electrode located on the surface of the electronic ink facing away from the substrate; an insulating layer located on the surface of the common electrode facing away from the substrate; a trace electrode located on a portion of the surface of the insulating layer facing away from the substrate; and a connecting wire passing through the electronic ink, the common electrode, and the insulating layer, one end of the connecting wire being connected to the display electrode, and the other end of the connecting wire being connected to the trace electrode.

[0006] Optionally, the material of the connecting wire includes carbon nanotubes, graphene oxide, or silver nanowires.

[0007] Optionally, the diameter of the connecting wire is 10μm-30μm.

[0008] Optionally, the common electrode is made of a transparent material, the wiring electrode is made of a transparent material, and the insulating layer is made of a transparent material.

[0009] Optionally, the material of the common electrode includes indium tin oxide, the material of the trace electrode includes indium tin oxide, and the material of the insulating layer includes polyimide or polyethylene terephthalate.

[0010] Optionally, the substrate may include a glass substrate or a polyimide substrate.

[0011] Optionally, the thickness of the insulating layer is 2.5μm-15μm.

[0012] Optionally, there are several display electrodes, which are spaced apart; there are several connecting wires, which are spaced apart; there are several wiring electrodes, which are spaced apart; one end of each connecting wire is connected to one of the display electrodes, and the other end is connected to one of the wiring electrodes.

[0013] The present invention also provides a method for manufacturing a segment display screen, comprising the following steps: providing a substrate; forming a display electrode on a portion of one side surface of the substrate; providing a common electrode, one side surface of the common electrode having electronic ink; attaching the side of the common electrode having the electronic ink to the side of the substrate where the display electrode is formed, the electronic ink facing the substrate and in contact with the display electrode; forming an insulating layer on the side surface of the common electrode facing away from the substrate; forming an opening penetrating the electronic ink, the common electrode, and the insulating layer, the bottom of the opening exposing a portion of the display electrode; filling the opening with a connecting wire, one end of the connecting wire being connected to the display electrode; forming a trace electrode on the side surface of the insulating layer facing away from the substrate, the trace electrode being connected to the end of the connecting wire facing away from the substrate.

[0014] Optionally, the method for forming the opening includes a laser drilling process.

[0015] The technical solution of the present invention has the following beneficial effects:

[0016] 1. The segment display screen provided by the present invention has a wiring electrode located on a portion of the surface of the insulating layer facing away from the substrate. The wiring electrode and the common electrode are insulated from each other by the insulating layer, which can prevent the wiring electrode and the common electrode from conducting. The wiring electrode and the display electrode are connected by connecting wires to achieve control of the electronic ink. Since there is no electronic ink between the wiring electrode and the display electrode, even if there is an electric field between the wiring electrode and the display electrode, the segment display screen will not display the pattern of the wiring electrode, thus improving the display effect of the segment display screen.

[0017] 2. Furthermore, the materials of the connecting wires include carbon nanotubes, graphene oxide, or silver nanowires. The connecting wires have good light transmittance and do not affect the display effect of the segment display screen.

[0018] 3. Furthermore, the materials used for the common electrode, wiring electrode, and insulating layer are all transparent and will not affect the display effect.

[0019] 4. The segment display screen manufacturing method provided by the present invention has a wiring electrode located on a portion of the surface of the insulating layer facing away from the substrate. The wiring electrode and the common electrode are insulated from each other by the insulating layer, which can prevent the wiring electrode and the common electrode from conducting. The wiring electrode and the display electrode are connected by connecting wires to achieve control of the electronic ink. Since there is no electronic ink between the wiring electrode and the display electrode, even if there is an electric field between the wiring electrode and the display electrode, the segment display screen will not display the pattern of the wiring electrode, thus improving the display effect of the segment display screen.

[0020] 5. Furthermore, the method for forming the opening includes a laser drilling process, which can create a large depth-to-diameter ratio, facilitating the connection of thinner connecting wires to the display electrode. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A structural schematic diagram of a segment display screen provided for existing technology;

[0023] Figure 2 This is a schematic flowchart of a method for manufacturing a segment display screen according to an embodiment of the present invention;

[0024] Figures 3-7 This is a schematic diagram of the structure of a segment display screen manufacturing method according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of a segment display screen provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Substrate; 2. Display electrode; 3. Electronic ink; 4. Common electrode; 5. Insulating layer; 6. Wiring electrode; 7. Connecting wire; 7b. Opening; 1a. Substrate; 2a. Display electrode; 3a. Electronic ink; 4a. Common electrode; 6a. Wiring electrode; 7a. Connecting wire. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] One embodiment of the present invention provides a segment code display screen, please refer to... Figure 8 ,include:

[0033] Substrate 1;

[0034] Display electrode 2 located on a portion of the surface of one side of the substrate 1;

[0035] Electronic ink 3 located on one side of the substrate 1 and in contact with the display electrode 2;

[0036] A common electrode 4 is located on the surface of the electronic ink 3 facing away from the substrate 1;

[0037] An insulating layer 5 is located on the surface of the common electrode 4 facing away from the substrate 1;

[0038] The wiring electrode 6 is located on the surface of the insulating layer 5 on the side opposite to the substrate 1;

[0039] A connecting wire 7 passes through the electronic ink 3, the common electrode 4, and the insulating layer 5. One end of the connecting wire 7 is connected to the display electrode 2, and the other end of the connecting wire 7 is connected to the wiring electrode 6.

[0040] The trace electrode 6 is located on a portion of the surface of the insulating layer 5 facing away from the substrate 1. The trace electrode 6 and the common electrode 4 are insulated from each other by the insulating layer 5, which can prevent the trace electrode 6 and the common electrode 4 from conducting. The trace electrode 6 and the display electrode 2 are connected by the connecting wire 7 to control the electronic ink 3. Since there is no electronic ink 3 between the trace electrode 6 and the display electrode 2, even if there is an electric field between the trace electrode 6 and the display electrode 2, the segment display screen will not display the pattern of the trace electrode 6, thus improving the display effect of the segment display screen.

[0041] The connecting wire 7 is made of materials including carbon nanotubes, graphene oxide, or silver nanowires. The connecting wire 7 has good light transmittance and does not affect the display effect of the segment display screen.

[0042] The diameter of the connecting wire 7 is 10μm-30μm, for example, 10μm, 15μm, 20μm, 25μm or 30μm. The connecting wire 7 is thin and does not affect the display effect of the segment display screen.

[0043] The common electrode 4 is made of a transparent material, the wiring electrode 6 is made of a transparent material, and the insulating layer 5 is made of a transparent material. The fact that the common electrode 4, wiring electrode 6, and insulating layer 5 are all made of transparent materials will not affect the display effect.

[0044] The common electrode 4 is made of indium tin oxide, the wiring electrode 6 is made of indium tin oxide, and the insulating layer 5 is made of polyimide or polyethylene terephthalate.

[0045] The substrate 1 includes a glass substrate or a polyimide substrate.

[0046] The thickness of the insulating layer 5 is 2.5μm-15μm, for example, 2.5μm, 5μm, 10μm or 15μm.

[0047] There are several display electrodes 2, which are spaced apart; there are several connecting wires 7, which are spaced apart; there are several wiring electrodes 6, which are spaced apart; one end of each connecting wire 7 is connected to one display electrode 2, and the other end is connected to one wiring electrode 6. The combination of several display electrodes 2 forms the display pattern of the segment display screen.

[0048] In other embodiments, a refresh electrode is also provided on the side surface of the substrate where the display electrode is located. The refresh electrode is in contact with the electronic ink and is spaced apart from the display electrode, and is used to control the electronic ink in the non-display area. Driven by the electric field formed by the common electrode and the display electrode, the black particles in the electronic ink facing the display electrode move toward the display surface. However, due to external factors or the fluidity of the electronic ink itself, a small number of black particles on the display electrode side also move toward the display surface, thus affecting the display effect. By applying an opposite electric field to the refresh electrode on the display electrode side, the black particles in the electronic ink on the display electrode side flow toward the substrate side, thereby avoiding this effect.

[0049] Another embodiment of the present invention also provides a method for manufacturing a segment display screen, please refer to [reference needed]. Figure 3 It includes the following steps:

[0050] S1: Provides a substrate;

[0051] S2: A display electrode is formed on a portion of the surface of one side of the substrate;

[0052] S3: Provide a common electrode, one side surface of which has electronic ink;

[0053] S4: The side of the common electrode with the electronic ink is attached to the side of the substrate where the display electrode is formed, with the electronic ink facing the substrate and in contact with the display electrode;

[0054] S5: An insulating layer is formed on the surface of the common electrode facing away from the substrate;

[0055] S6: An opening is formed that penetrates the electronic ink, the common electrode, and the insulating layer, with a portion of the display electrode exposed at the bottom of the opening;

[0056] S7: Fill the opening with a connecting wire, one end of which is connected to the display electrode;

[0057] S8: A trace electrode is formed on the side surface of the insulating layer facing away from the substrate, and the trace electrode is connected to the end of the connecting wire facing away from the substrate.

[0058] The method for forming the opening includes laser drilling.

[0059] The trace electrode 6 is located on a portion of the surface of the insulating layer 5 facing away from the substrate 1. The trace electrode 6 and the common electrode 4 are insulated from each other by the insulating layer 5, which can prevent the trace electrode 6 and the common electrode 4 from conducting. The trace electrode 6 and the display electrode 2 are connected by the connecting wire 7 to control the electronic ink 3. Since there is no electronic ink 3 between the trace electrode 6 and the display electrode 2, even if there is an electric field between the trace electrode 6 and the display electrode 2, the segment display screen will not display the pattern of the trace electrode 6, thus improving the display effect of the segment display screen.

[0060] Please refer to Figures 3 to 8 The following section will provide a detailed explanation of the manufacturing method of the segment display screen, with reference to the accompanying drawings.

[0061] Please refer to Figure 3 A substrate 1 is provided, and a display electrode 2 is formed on a portion of the surface of one side of the substrate 1.

[0062] The substrate 1 can be a glass substrate or a polyimide substrate. The display electrodes 2 are formed by printing processes. Several display electrodes 2 constitute the display pattern of the segment display screen.

[0063] Please refer to Figure 4 A common electrode 4 is provided, wherein one side surface of the common electrode 4 has electronic ink 3.

[0064] The common electrode 4 is made of indium tin oxide, which has good light transmittance and does not affect the display effect of the segment display screen.

[0065] Please refer to Figure 5 The side of the common electrode 4 with the electronic ink 3 is attached to the side of the substrate 1 where the display electrode 2 is formed, and the electronic ink 3 faces the substrate 1 and is in contact with the display electrode 2.

[0066] Please refer to Figure 6 An insulating layer 5 is formed on the surface of the common electrode 4 facing away from the substrate 1. Then, an opening 7b is formed that penetrates the electronic ink 3, the common electrode 4 and the insulating layer 5, with a portion of the display electrode 2 exposed at the bottom of the opening 7b.

[0067] The material of the insulating layer 5 includes polyimide or polyethylene terephthalate; the thickness of the insulating layer 5 is 2.5μm-15μm, for example, 2.5μm, 5μm, 10μm or 15μm.

[0068] The method of forming the opening 7b includes a laser drilling process, wherein the diameter of the opening 7b is 10μm-30μm, for example, 10μm, 15μm, 20μm, 25μm or 30μm.

[0069] Please refer to Figure 7The opening 7b is filled with a connecting wire 7, one end of which is connected to the display electrode 2.

[0070] The connecting wire 7 is made of materials including carbon nanotubes, graphene oxide, or silver nanowires. The connecting wire 7 has good light transmittance and does not affect the display effect of the segment display screen.

[0071] Please refer to Figure 8 A trace electrode 6 is formed on the surface of the insulating layer 5 facing away from the substrate 1, and the trace electrode 6 is connected to the end of the connecting wire 7 facing away from the substrate 1.

[0072] The material of the trace electrode 6 includes indium tin oxide. Indium tin oxide has good light transmittance and does not affect the display effect of the segment display screen.

[0073] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A segment code display screen, characterized by The segment code display screen comprises: a substrate; a display electrode on a part of the surface of one side of the substrate; an electronic ink on the side of the substrate and in contact with the display electrode; a common electrode on the side of the substrate and in contact with the electronic ink; an insulating layer on the side of the common electrode away from the substrate; a wiring electrode on a part of the surface of the side of the insulating layer away from the substrate; a connecting wire penetrating through the electronic ink, the common electrode and the insulating layer, one end of the connecting wire being connected with the display electrode and the other end of the connecting wire being connected with the wiring electrode; wherein the material of the connecting wire comprises carbon nanotubes, graphene oxide or silver nanowires; the material of the common electrode comprises transparent material; the material of the wiring electrode comprises transparent material; and the material of the insulating layer comprises transparent material. The segment code display screen further comprises a refreshing electrode on the surface of the side of the substrate provided with the display electrode; the refreshing electrode is in contact with the electronic ink, the refreshing electrode is located on the side of the display electrode and is spaced apart from the display electrode, and the refreshing electrode is used for controlling the electronic ink in the non-display area.

2. The segment display screen of claim 1, wherein, The diameter of the connecting wire is 10-30 μm.

3. The segment display screen of claim 1, wherein, The material of the common electrode comprises indium tin oxide, the material of the wiring electrode comprises indium tin oxide, and the material of the insulating layer comprises polyimide or polyethylene terephthalate.

4. The segment display screen of claim 1, wherein, The substrate comprises a glass substrate or a polyimide substrate.

5. The segment display screen of claim 1, wherein, The thickness of the insulating layer is 2.5-15 μm.

6. The segment display screen of claim 1, wherein, There are a plurality of display electrodes, and the plurality of display electrodes are distributed at intervals; there are a plurality of connecting wires, and the plurality of connecting wires are distributed at intervals; there are a plurality of wiring electrodes, and the plurality of wiring electrodes are distributed at intervals; one end of each connecting wire is connected with one display electrode, and the other end of each connecting wire is connected with one wiring electrode.

7. A method of manufacturing a segment code display screen, characterized by, The method comprises the following steps: providing a substrate; forming a display electrode on a part of the surface of one side of the substrate; providing a common electrode, the surface of one side of the common electrode being provided with an electronic ink; attaching the side of the common electrode provided with the electronic ink to the side of the substrate formed with the display electrode, the electronic ink facing the substrate and being in contact with the display electrode; forming an insulating layer on the surface of one side of the common electrode away from the substrate; forming an opening penetrating through the electronic ink, the common electrode and the insulating layer, the bottom of the opening exposing part of the display electrode; filling the opening with a connecting wire, one end of the connecting wire being connected with the display electrode; forming a wiring electrode on the surface of one side of the insulating layer away from the substrate, the wiring electrode being connected with the end of the connecting wire away from the substrate; wherein the material of the connecting wire comprises carbon nanotubes, graphene oxide or silver nanowires; the material of the common electrode comprises transparent material; the material of the wiring electrode comprises transparent material; and the material of the insulating layer comprises transparent material. The manufacturing method further includes forming a refresh electrode on the side surface of the substrate provided with the display electrode; the refresh electrode is in contact with the electronic ink, the refresh electrode is located on the side of the display electrode and is spaced from the display electrode, and the refresh electrode is used to control the electronic ink of the non-display area.

8. The method of claim 7, wherein the step of applying the segment code display screen is performed by a process comprising: The method of forming the opening includes a laser drilling process. ​

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