Self-luminous touch film and manufacturing method thereof

Abstract

The application discloses a self-luminous touch film and a manufacturing method thereof. A transparent conductive button layer, a conductive circuit line layer and a first transparent insulation layer are printed on the front surface of a transparent substrate in sequence; then a first transparent conductive layer, a plurality of cold light sheet pattern layers, a second transparent insulation layer, a third transparent insulation layer, a second transparent conductive layer and a fourth transparent insulation layer are printed on the back surface of the transparent substrate in sequence. The application is manufactured by printing, so that each layered structure has the characteristics of complete adhesion, dustproof and moistureproof, and the layers are no longer bonded by adhesive material, which is more in line with the light and thin design demand of electronic products, and the overall thickness is reduced. The touch is more sensitive, the cold light sheet pattern layer is arranged, the adhesive material in the backlight source and the assembly integration is saved, the product structure is more compact and light, the cost is reduced, and the cold light sheet pattern layer has the advantages of uniform light emission, low power consumption, thin thickness and beautiful appearance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thin film control panel, in particular to a self-luminous touch film and a manufacturing method thereof. BACKGROUND

[0002] The thin film control panel is a new operating system of electronic integrated product integrating decoration and functionality, which integrates switch key, panel functional text, mark, trademark, transparent window and display. It has many advantages: beautiful appearance, small size, thin thickness, light weight, moisture-proof, dust-proof, oil stain-proof and harmful gas-proof, strong sealing, acid and alkali resistance, shock resistance, long service life and bending resistance. At present, the thin film control panel is widely used in intelligent electronic measuring instruments, medical instruments, computer control, numerical control machine tools, electronic weighing apparatus, postal and telecommunication, copying machines, refrigerators, microwave ovens, electric fans, washing machines, electronic game machines and various industrial and household electrical products. In application, the electronic thin film switch has a wide application space from children's toys to household appliances, from civilian industry to automobile field to aerospace technology, and has begun to replace traditional switches and take a leading position in various fields.

[0003] These thin film control panels are convenient to use in places with sufficient light, but it is difficult to see the keys on the thin film switch in the night or dim light environment. On the other hand, there is a scheme for controlling the light-emitting pattern of the panel by using the performance of the cold light sheet. The cold light sheet is directly pasted or encapsulated in the area corresponding to the panel pattern layer, and the cold light sheet is controlled to emit light by the power supply circuit to provide a light source for the panel pattern. For example, by pasting an EL cold light sheet between the circuit layer and the adhesive layer, the main circuit board controls the power supply conduction of the EL cold light sheet, the cold light sheet emits light, and each key on the electronic thin film switch panel layer is clearly visible. However, the cold light sheet is pasted between the circuit layer and the adhesive layer, which increases the thickness of the product integration and has high performance requirements for the glue, which is high in cost. In addition, the glue layer also has the problems of moisture-proof, dust-proof and oil-proof in the use environment, which affects the service life and quality of the touch film. On the other hand, it cannot better adapt to the higher quality touch experience and requirements of light and thin products. SUMMARY

[0004] The present application aims to provide a self-luminous touch film to solve the problems in the background art.

[0005] To achieve the above object, the present application provides the following technical scheme: a self-luminous touch film, comprising a first transparent insulating layer, a conductive circuit layer, a transparent conductive key layer, a transparent substrate, a first transparent conductive layer, a second transparent insulating layer, a third transparent insulating layer, a second transparent conductive layer and a fourth transparent insulating layer arranged in sequence, the transparent conductive key layer comprises a plurality of transparent conductive keys, and the plurality of transparent conductive keys are electrically connected with the conductive circuit layer, a plurality of cold light sheet pattern layers are arranged between the first transparent conductive layer and the second transparent insulating layer, the first transparent conductive layer is electrically connected with the plurality of cold light sheet pattern layers, the conductive circuit layer is electrically connected with the first transparent conductive layer and the second transparent conductive layer, and the first transparent conductive layer can conductively control any cold light sheet pattern layer, wherein the plurality of transparent conductive keys correspond to the positions of the plurality of cold light sheet pattern layers.

[0006] In the present application, the transparent substrate is a light-transmitting or semi-light-transmitting film, which can be made of any one of PMMA, PET, PC, PP, PVC and glass.

[0007] In the present application, the thickness of the first transparent insulating layer, the second transparent insulating layer, the third transparent insulating layer and the fourth transparent insulating layer is 0.015mm-0.045mm.

[0008] In the present application, the first transparent conductive layer, the second transparent conductive layer and the transparent conductive key can be printed by using any one of high polymer, nano silver wire, metal mesh fine wire, indium tin oxide and graphene, and the thickness of the first transparent conductive layer, the second transparent conductive layer and the transparent conductive key is 0.015mm-0.045mm.

[0009] In the present application, the cold light sheet pattern layer is formed by screen printing phosphorus-containing material or screen printing zinc sulfide material, and the thickness of the cold light sheet pattern layer is 0.01mm-0.05mm.

[0010] In the present application, the cold light sheet pattern layer is one of a pattern, a character or a key identification.

[0011] A self-luminous touch film manufacturing method, comprising:

[0012] S1: selecting a transparent substrate, the transparent substrate is made of any one of PMMA, PET, PC, PP, PVC and glass;

[0013] S2: printing a plurality of transparent conductive keys, a conductive circuit layer and a first transparent insulating layer on the front surface of the transparent substrate in sequence;

[0014] S3: printing the first transparent conductive layer, the plurality of cold light sheet pattern layers, the second transparent insulating layer, the third transparent insulating layer, the second transparent conductive layer and the fourth transparent insulating layer in sequence on the reverse side of the transparent substrate, wherein the cold light sheet pattern layer is one of a pattern, a character or a key identification;

[0015] S4: the conductive circuit layer is electrically connected with the first transparent conductive layer and the second transparent conductive layer through the pins.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. The conductive circuit layer is connected with an external power supply through the pins, and the function control is realized by clicking any transparent conductive key position, the conductive circuit layer is electrically connected with the first transparent conductive layer and the second transparent conductive layer, the first transparent conductive layer conducts electricity to the corresponding position of the cold light sheet pattern layer, the cold light sheet pattern layer at the corresponding position emits light, the cold light sheet pattern layer at the corresponding position is powered off by clicking the transparent conductive key position again, and the cold light sheet pattern layer no longer emits light, the backlight source and the adhesive material in the assembly integration are omitted, the product structure is more compact and thin, the cost is reduced, and the cold light sheet pattern layer has the advantages of uniform light emission, low power consumption, thin thickness and beautiful appearance.

[0018] 2. The manufacturing method of the present application prints on the front and back of the transparent substrate in sequence, so that each layered structure has the characteristics of complete adhesion, dustproof and moistureproof, and the adhesive material is no longer used to bond and adhere between the layers, which is more in line with the light and thin design demand of electronic products, and the overall thickness is reduced, and the touch feeling is more sensitive. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure of the present application is shown in the figure. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] Please refer to Figure 1The present invention provides an embodiment of a self-illuminating touch film, comprising a first transparent insulating layer 1, a conductive circuit layer 2, a transparent substrate 4, a first transparent conductive layer 5, a second transparent insulating layer 7, a third transparent insulating layer 8, a second transparent conductive layer 9, and a fourth transparent insulating layer 10 arranged sequentially. A plurality of transparent conductive buttons 3 are disposed between the conductive circuit layer 2 and the transparent substrate 4, and the plurality of transparent conductive buttons 3 are electrically connected to the conductive circuit layer 2. A plurality of electroluminescent pattern layers 6 are disposed between the first transparent conductive layer 5 and the second transparent insulating layer 7, and the first transparent conductive layer 5 is electrically connected to the plurality of electroluminescent pattern layers 6. The conductive circuit layer 2 is electrically connected to both the first transparent conductive layer 5 and the second transparent conductive layer 9, and the first transparent conductive layer 5 can individually control the conductivity of any one of the electroluminescent pattern layers 6. The plurality of transparent conductive buttons 3 correspond in position to the plurality of electroluminescent pattern layers 6.

[0022] In this process, multiple transparent conductive buttons 3, a conductive circuit layer 2, and a first transparent insulating layer 1 are sequentially printed on the front side of the transparent substrate 4. Then, a first transparent conductive layer 5, multiple electroluminescent pattern layers 6, a second transparent insulating layer 7, a third transparent insulating layer 8, a second transparent conductive layer 9, and a fourth transparent insulating layer 10 are sequentially printed on the back side of the transparent substrate 4. Through the printing process, each layer structure has complete and tight sealing properties, and is dustproof and moisture-proof. Furthermore, the layers are no longer bonded together with adhesive materials, which better meets the requirements of lightweight and thin electronic products and achieves the effect of reducing the overall thickness and making the touch more sensitive.

[0023] In this invention, the transparent substrate 4 is a light-transmitting or semi-light-transmitting film, which can be made of any one of PMMA, PET, PC, PP, PVC, or glass. In addition to the above materials, other semi-transparent materials can also be used. All of the above materials have the advantage of good light transmittance and are conducive to the printing and production of various materials. In this embodiment, a transparent substrate 4 made of PET material is used.

[0024] In this invention, the thicknesses of the first transparent insulating layer 1, the second transparent insulating layer 7, the third transparent insulating layer 8, and the fourth transparent insulating layer 10 are 0.015mm to 0.045mm. This thickness setting ensures the normal operation of the self-illuminating touch film while minimizing its thickness to achieve a thin and light design. The first transparent insulating layer 1, the second transparent insulating layer 7, the third transparent insulating layer 8, and the fourth transparent insulating layer 10 are all printed from transparent insulating material. Among them, the second transparent insulating layer 7 and the third transparent insulating layer 8 provide better protection for the first transparent conductive layer 5 and the cold light sheet pattern layer 6 through the double-layer transparent insulating layer printing design.

[0025] In the present application, the first transparent conductive layer 5, the second transparent conductive layer 9 and the transparent conductive button 3 can be printed by using any one of the following materials: a polymer (pedot), a nano wire-silver, a metal mesh, an indium-tin oxide (ITO) and a graphene nanostructure. The above-mentioned materials have excellent conductivity, and can be firmly fixed on the substrate by printing. The thickness of the first transparent conductive layer 5, the second transparent conductive layer 9 and the transparent conductive button 3 is 0.015mm-0.045mm. The thickness is set to ensure the normal operation of the self-luminous touch film, and to reduce the thickness of the self-luminous touch film as much as possible, so as to achieve the effect of light and thin design.

[0026] In the present application, the cold light sheet pattern layer 6 is printed by using a phosphorus-containing material through a screen or a zinc sulfide (ZnS) material through a screen. The thickness of the cold light sheet pattern layer 6 is 0.01mm-0.05mm. The thickness is set to ensure the normal operation of the self-luminous touch film, and to reduce the thickness of the self-luminous touch film as much as possible, so as to achieve the effect of light and thin design. The pin of the conductive circuit layer 2 is connected with an external power supply. By pressing any transparent conductive button 3, the function control can be realized. The conductive circuit layer 2 is electrically connected with the first transparent conductive layer 5 and the second transparent conductive layer 9. The first transparent conductive layer 5 conducts electricity to the corresponding position of the cold light sheet pattern layer 6. The corresponding position of the cold light sheet pattern layer 6 emits light. By pressing the transparent conductive button 3 again, the corresponding position of the cold light sheet pattern layer 6 is powered off, and no longer emits light. The backlight source and the adhesive material in the assembly integration are omitted. The product structure is more compact, light and thin, and the cost is reduced. The cold light sheet pattern layer has the advantages of uniform light emission, low power consumption, thin thickness and beautiful appearance.

[0027] In the present application, the cold light sheet pattern layer 6 is one of a pattern, a character or a button mark. The cold light layer 6 can be a functional button mark, such as a start or pause mark, a number, such as 1, 2, 3, etc., to realize gear control, or a specific pattern, such as a volume mute pattern, etc. The cold light sheet pattern layer 6 is mainly used to facilitate the user to identify the functionality of the button.

[0028] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. A self-luminous touch film, characterized by: The self-luminous touch film comprises a first transparent insulating layer, a conductive circuit layer, a transparent conductive key layer, a transparent substrate, a first transparent conductive layer, a second transparent insulating layer, a third transparent insulating layer, a second transparent conductive layer and a fourth transparent insulating layer arranged in sequence, the transparent conductive key layer comprises a plurality of transparent conductive keys, and the plurality of transparent conductive keys are electrically connected with the conductive circuit layer, a plurality of luminescent sheet pattern layers are arranged between the first transparent conductive layer and the second transparent insulating layer, the first transparent conductive layer is electrically connected with the plurality of luminescent sheet pattern layers, the conductive circuit layer is controlled by a mainboard in connection with the first transparent conductive layer and the second transparent conductive layer, and the first transparent conductive layer conducts electricity to control any luminescent sheet pattern layer, wherein the plurality of transparent conductive keys correspond to the positions of the plurality of luminescent sheet pattern layers; any one of PMMA, PET, PC, PP, PVC and glass is used to make the transparent material; the thickness of the first transparent insulating layer, the second transparent insulating layer, the third transparent insulating layer and the fourth transparent insulating layer is 0.015mm-0.045mm; the first transparent conductive layer, the second transparent conductive layer and the transparent conductive key are printed by using any one of a high polymer, nano silver wire, metal grid fine wire, indium tin oxide and graphene, and the thickness of the first transparent conductive layer, the second transparent conductive layer and the transparent conductive key is 0.015mm-0.045mm.

2. The self-luminous touch film according to claim 1, wherein: The luminescent sheet pattern layer is formed by screen printing a phosphorus-containing material or zinc sulfide material, and the thickness of the luminescent sheet pattern layer is 0.01mm-0.05mm.

3. The self-luminous touch film according to claim 1, wherein: The luminescent sheet pattern layer is one of a pattern, a character or a key mark.

4. A method for manufacturing a self-luminous touch film, characterized by: The method for manufacturing the self-luminous touch film comprises the following steps: S1: selecting a transparent substrate made of any one of PMMA, PET, PC, PP, PVC and glass; S2: printing a plurality of transparent conductive keys, a conductive circuit layer and a first transparent insulating layer on the front surface of the transparent substrate in sequence; S3: printing a first transparent conductive layer, a plurality of luminescent sheet pattern layers, a second transparent insulating layer, a third transparent insulating layer, a second transparent conductive layer and a fourth transparent insulating layer on the back surface of the transparent substrate in sequence, wherein the luminescent sheet pattern layer is one of a pattern, a character or a key mark; S4: connecting the conductive circuit layer with the first transparent conductive layer and the second transparent conductive layer by a pin to a main control board to realize electrical connection.

5. The method for manufacturing a self-emissive touch film according to claim 4, characterized in that, The thickness of the first transparent insulating layer, the second transparent insulating layer, the third transparent insulating layer and the fourth transparent insulating layer is 0.015mm-0.045mm; the first transparent conductive layer, the second transparent conductive layer and the transparent conductive key are printed by using any one of a high polymer, nano silver wire, metal grid fine wire, indium tin oxide and graphene, and the thickness of the first transparent conductive layer, the second transparent conductive layer and the transparent conductive key is 0.015mm-0.045mm.

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