CN107479769B - Self-luminous touch control panel made of thin film light-emitting circuit - Google Patents

Self-luminous touch control panel made of thin film light-emitting circuit Download PDF

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Publication number
CN107479769B
CN107479769B CN201710883754.XA CN201710883754A CN107479769B CN 107479769 B CN107479769 B CN 107479769B CN 201710883754 A CN201710883754 A CN 201710883754A CN 107479769 B CN107479769 B CN 107479769B
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China
Prior art keywords
light
circuit
emitting
thin film
film
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CN201710883754.XA
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Chinese (zh)
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CN107479769A (en
Inventor
周志敏
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Foshan Shunde Ronggui Yida Electronic Film Device Co ltd
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Foshan Shunde Ronggui Yida Electronic Film Device Co ltd
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Priority to CN201710883754.XA priority Critical patent/CN107479769B/en
Publication of CN107479769A publication Critical patent/CN107479769A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40OLEDs integrated with touch screens

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Push-Button Switches (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The invention discloses a self-luminous touch control panel made of a film light-emitting circuit, which comprises a flexible film light-emitting circuit, an insulating interlayer and a transparent film touch control circuit, wherein the flexible film light-emitting circuit comprises a substrate film, a light guide protective layer, a light-emitting sheet, a conductive silver paste layer and a circuit integral protective layer, the light-emitting sheet is made of an organic light-emitting semiconductor material, and the light guide protective layer, the light-emitting sheet, the conductive silver paste layer and the circuit integral protective layer are sequentially arranged on the substrate film. The substrate film is a bendable film, and the lighting sheet is printed on the substrate film in a screen printing mode. The novel light-emitting circuit structure solves the problem that the light-emitting lamp beads occupy large space; because the flexible film light-emitting circuit and the transparent film touch circuit occupy small space and the membrane is soft and bendable, the control panel compounded by the circuits can be arranged at any position, and the requirements of different products are met.

Description

Self-luminous touch control panel made of thin film light-emitting circuit
Technical Field
The invention relates to the field of printed film circuits, in particular to a flexible film light-emitting circuit printed by using an organic light-emitting semiconductor material and a touch panel adopting the flexible film light-emitting circuit.
Background
The lamp bead type point lighting is commonly adopted in lighting indication panels of household appliances such as electric cookers, electromagnetic ovens and microwave ovens in the market at present, and has several disadvantages, namely, the lamp bead type point lighting product is fixed in structure and comprises a driving circuit board and LED lamp beads arranged on the circuit board; in addition, in order to make the illumination effect on the display panel even, must reserve certain distance between LED lamp pearl and panel, the characteristic and the structure of this kind of product must lead to occupation space big, so the volume of products such as electric rice cooker, electromagnetism stove etc. on the market at present can not all effectively reduce, and the structure of this kind of luminous effect is fixed relatively, leads to the product to need consider its problem of placing position and space when designing, and then leads to the design dead plate inflexible. For example, the electric cooker is a uniform structural design because of the restriction of the space size of the control panel; this is true for all products with lighting effect control panels; secondly, the energy consumption is high, and particularly, the high energy consumption requirement on some products can be greatly influenced; thirdly, the production process is complex, labor is consumed, and the efficiency is low. As shown in the attached figure 1 of the specification, the light bead type point light-emitting is realized by arranging a plurality of light beads 6 at the bottom to enable light to pass through an upper acrylic plate 5, and as the light beads have a certain size and a large number, the acrylic plate also has a certain thickness, so that the whole light bead light-emitting structure occupies a large space and has high energy consumption, the whole production process is complex, and the operation is not easy.
Chinese patent application No.: 201310712280.4 discloses a light-emitting diode film circuit and a decorative plate thereof, wherein the light-emitting diodes are uniformly arranged on a film substrate and connected through wires, the method effectively solves the problems of flexibility and light-emitting uniformity of a light-emitting plate, but the production process is still complex, and the structure cannot be applied to a touch panel.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention aims to provide a self-luminous touch control panel made of a thin film light-emitting circuit, and aims to solve the problems that the space design of a product is limited, the production process is complex and the production efficiency is low due to the fact that a lamp bead type light-emitting mode is adopted in a light-emitting indication panel on an existing household appliance.
The technical scheme of the invention is as follows:
The self-luminous touch control panel comprises a panel, a flexible thin film light-emitting circuit and a transparent thin film touch control circuit, wherein the flexible thin film light-emitting circuit, the transparent thin film touch control circuit and the panel are sequentially arranged from bottom to top, functional icons are arranged on the panel, and touch keys arranged on the transparent thin film touch control circuit are arranged below positions corresponding to the functional icons; the touch control key and the luminous sheet are respectively connected to the signal control box and the power control box through printed wires, and a flexible circuit board plug connected with the control box in an inserted mode is arranged on the printed wires.
The self-luminous touch control panel is characterized in that the self-luminous touch control panel is made of a thin film light-emitting circuit, the flexible thin film light-emitting circuit comprises a substrate thin film, a light-emitting sheet, a conductive silver paste layer and a circuit integral protective layer, the light-emitting sheet is made of an organic light-emitting semiconductor material, the light-emitting sheet is coated on the substrate thin film, the conductive silver paste layer is fully covered on the light-emitting sheet, the conductive silver paste layer is connected with a printed wire, the circuit integral protective layer is coated on the whole circuit, and the circuit integral protective layer is an insulating coating.
The self-luminous touch control panel is characterized in that the self-luminous touch control panel is made of a thin film light-emitting circuit, the flexible thin film light-emitting circuit further comprises a light guide protective layer, the light guide protective layer is coated on a substrate thin film, the light-emitting sheet is coated on the light guide protective layer, the conductive silver paste layer is fully covered on the light-emitting sheet, the conductive silver paste layer is connected with a printed wire, and the whole circuit protective layer is coated on the whole circuit.
The self-luminous touch control panel manufactured by the thin film light-emitting circuit further comprises an interlayer for isolating electromagnetic interference generated by the flexible thin film light-emitting circuit, the interlayer is arranged between the flexible thin film light-emitting circuit and the transparent thin film touch control circuit, a light-transmitting hole site is arranged on the interlayer, and the position of the light-transmitting hole site corresponds to the positions of the touch control key and the light-emitting sheet.
The self-luminous touch control panel made of the thin film light-emitting circuit is characterized in that the interlayer is insulating lime cotton, black non-woven fabric or insulating rubber, and the thickness of the interlayer is more than or equal to 1.5 mm.
The self-luminous touch control panel made of the thin film light-emitting circuit further comprises an interlayer for isolating electromagnetic interference generated by the flexible thin film light-emitting circuit, the interlayer is arranged on the flexible thin film light-emitting circuit or/and the transparent thin film touch control circuit, the interlayer is an electromagnetic interference preventing coating or an electromagnetic interference preventing grid made of a transparent conductive material, and the transparent conductive material is a special conductive high polymer or tin antimony oxide.
The self-luminous touch control panel is made of a thin film light-emitting circuit, wherein the coating or the grid is arranged on the front surface of the flexible thin film light-emitting circuit.
The self-luminous touch control panel is made of a thin film light-emitting circuit, wherein the substrate thin film is a transparent bendable thin film.
The self-luminous touch control panel made of the thin film light-emitting circuit comprises the following control methods: after the circuit is electrified, the function icons on the touch panel are touched, the touch keys at the corresponding positions receive signals and send the signals to the signal control box, the signal control box sends the signals to the power control box, the power control box sends current signals to the corresponding luminous sheets, and the luminous sheets emit light to illuminate the function icon areas after touching on the panel.
The invention has the beneficial effects that: the substrate film of the flexible film light-emitting circuit is a flexible film, the light-emitting sheet is made of an organic light-emitting semiconductor material and is printed on the substrate film in a screen printing mode, the novel light-emitting circuit structure solves the problem that the light-emitting lamp beads occupy large space, and the organic light-emitting semiconductor material is low in heat and high in power consumption when electrified; because the flexible film light-emitting circuit and the transparent film touch control electric template have small occupied space and the membrane is soft and bendable, the control panel compounded by the circuits can be arranged at any position, and the requirements of different products can be met.
Drawings
FIG. 1 is a schematic cross-sectional view of a prior art lamp bead;
FIG. 2 is a schematic diagram of a flexible thin film light-emitting circuit layer structure provided by the invention;
FIG. 3 is an energized rear elevation view of a flexible thin film lighting circuit application product provided by the present invention;
FIG. 4 is an overall front view of a transparent thin film touch circuit application product provided by the present invention;
FIG. 5 is a schematic diagram of a combined structure of a minimum unit touch circuit and a minimum unit light emitting circuit;
fig. 6 is a schematic cross-sectional view of a self-luminous touch control panel according to the present invention.
In the above drawings, the names corresponding to the reference numerals are: 0-self-luminous touch panel; 00-flexible circuit board plug; 1-a flexible thin film light-emitting circuit; 2-insulating spacers; 3-a transparent thin film touch circuit; 5-panels; 6-lamp beads; 9-a film substrate; 10-a light guide protective layer; 11-a luminescent sheet; 12-a conductive silver paste layer; 13-a protective coating for the whole circuit; 14-printing wires; 16-a wire protective layer; 17-touch keys; 18-light-transmitting hole sites.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear and clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 2 and 3, the present invention provides a self-luminous touch control panel made of a thin film light-emitting circuit, and the self-luminous touch control panel 0 mainly comprises a flexible thin film light-emitting circuit 1 and a transparent thin film touch control circuit 3. The flexible film light-emitting circuit 1 is a novel light-emitting circuit structure which is newly designed for solving the technical problem of the invention. The technology is a special circuit structure which applies the light-emitting principle technology of an organic light-emitting semiconductor and is newly applied. The concrete structure is as follows:
The flexible film light-emitting circuit 1 comprises a substrate film 9, wherein the substrate film 9 is generally a transparent film material or a colored semitransparent film material; a light guide protective layer 10, a luminescent sheet 11, a conductive silver paste layer 12 and a circuit integral protective coating 13 are sequentially arranged on the substrate film 9. The light guiding protective layer 10 is optionally provided, and is generally provided when it is required to protect the printing uniformity of the luminescent material and to restrict the condensing effect of the luminescent material. In this embodiment, the light guiding protective layer 10 is optionally disposed, and the light guiding protective layer is made of unidirectional light-transmitting material, and only light on one side of the light emitting sheet can transmit.
The luminous sheet is made of an organic luminous semiconductor material and is printed on the surface of the base material film in a screen printing mode, and the luminous sheet can be printed on the base material film by a printer by utilizing an electronic ink printing technology.
A layer of conductive silver paste is printed on the entire surface of the light-emitting sheet 11, so as to energize the light-emitting sheet 11, and in this embodiment, the conductive silver paste layer 12 is used, which is naturally sufficient to energize the light-emitting sheet 11. Therefore, the conductive paste is not limited to the conductive silver paste, and the conductive graphite may be used. The conductive silver paste layer is connected with a power supply control box through a printed wire 14.
In order to protect the insulating effect of the whole circuit, a layer of circuit whole protective coating 13 is provided on the whole circuit. At the same time, the printed conductor 14 is also provided with a conductor protection layer 16.
Preferably, the substrate film 9 is a transparent flexible film.
Referring to fig. 4, the flexible thin film light-emitting circuit 1 is connected to a power control box through a flexible circuit board plug 00, the power control box controls whether the light-emitting sheet 11 is electrified according to a switch instruction of a circuit control signal, the light-emitting sheet 11 emits light after being electrified, and a light-emitting area 111 is formed on the light-guiding protective layer 10. The light emitting sheet is connected to a power source through a printed wire 14, and a wire protection layer 16 is provided on the printed wire 14.
Preferably, the wire protective layer 16 has a multi-layered structure for preventing interference, and has an electromagnetic interference release function.
In order to solve the technical problem of the present invention and achieve the technical effect required by the present invention, the touch control circuit of the present invention must be matched with a transparent touch control circuit 3 made of a transparent touch conductive material. As shown in fig. 5. The transparent touch control circuit 3 comprises a touch key 17, a printed wire 14 and a flexible circuit board plug 00, wherein the position of the touch key 17 corresponds to the position of the light guide protection layer 10 of the flexible film light-emitting circuit 1. The transparent touch control circuit 3 is connected with the flexible circuit board plug 00 through the printed wire 14 and then connected with the touch signal control box through the flexible circuit board plug 00. When the user touches the touch keys 17, the touch signal is transmitted to the touch signal control box through the printed wire 14 and the flexible circuit board plug 00, and the touch signal control box transmits the signal to the power control box and other function control circuits.
Referring to fig. 6, the present invention provides an implementation application case of a minimum unit, in which a spacer layer 2 is disposed between the flexible thin film light-emitting circuit 1 and the transparent thin film touch circuit 3. The interlayer 2 is provided with a light-transmitting hole site 18, and the position of the light-transmitting hole site 18 corresponds to the position of the touch key 17. The purpose of the barrier layer 2 is to act as a barrier. Because the flexible film light-emitting circuit 1 is electrified to generate electromagnetic signals on the printed wire 14, after the light-emitting circuit and the touch control circuit are attached together, the distance between the light-emitting circuit and the touch control circuit is too short, if the wire on the light-emitting circuit just covers the touch control area of the touch control circuit, the wire is electrified to cause the touch control area to generate misoperation signals, so that the circuit is out of control. If the printed circuit wiring of the light-emitting circuit is reasonable, no wire can cover the touch area, and interlayer isolation is not needed. The present invention provides a barrier layer 2 between the light emitting circuit and the touch control circuit in order to reduce the wiring design of the light emitting circuit.
Preferably, the interlayer 2 is insulating lime cotton, black non-woven fabric, insulating rubber or the like, and the thickness of the interlayer is more than or equal to 1.5 mm.
Preferably, the interlayer is made of a non-light-guiding material, the light-emitting surface of the bottom layer is vertically guided to the touch area and does not diffuse to the periphery, and the display effect on the panel is affected.
More preferably, the interlayer 2 is disposed on the flexible thin film light-emitting circuit 1 and/or the transparent thin film touch circuit 3, the interlayer 2 is an electromagnetic interference preventing coating or an electromagnetic interference preventing grid made of a transparent conductive material, and the transparent conductive material is made of a special conductive high polymer or tin antimony oxide. And an electromagnetic interference preventing coating or an electromagnetic interference preventing grid made of the transparent conductive material is coated on one surface, correspondingly attached to the flexible thin film light-emitting circuit 1 and the transparent thin film touch circuit 3. More specifically, the coating or grid is arranged on the front surface of the flexible film light-emitting circuit 1.
Referring further to fig. 2, the present invention provides a composite rear side sectional view of the whole product, and the self-luminous touch control panel 0 includes: the flexible circuit board plug 00, a flexible film light-emitting circuit 1, a interlayer 2, a transparent film touch control circuit 3 and a panel 5. The flexible thin film light-emitting circuit 1, the interlayer 2, the transparent thin film touch control circuit 3 and the panel 5 are sequentially arranged from bottom to top, and the flexible circuit board plug 00 is respectively electrically connected with printed wires of the flexible thin film light-emitting circuit 1 and the transparent thin film touch control circuit 3, so that the flexible thin film light-emitting circuit 1 and the transparent thin film touch control circuit 3 are spliced to a control unit. The panel 5 is provided with various functional icons, the position below the corresponding functional icons is a touch key 17 printed on the transparent film touch circuit 3, and the position below the touch key 17 is a light-emitting sheet 11 printed on the flexible film light-emitting circuit 2. After the circuit is electrified, the function icons on the touch panel are touched, the touch keys 17 at corresponding positions receive signals and send the signals to a signal control box, the signal control box sends the signals to a power control box and other function control circuits (not shown in the figure), the power control box sends current signals to the corresponding luminous sheets 11, the luminous sheets 11 emit light, and the functional icon areas after touch on the acrylic plate are illuminated. The other function control circuits of the colleagues send corresponding working control signals to the electric appliances.
The panel is a light-transmitting or semi-transmitting acrylic plate, or a light-transmitting or semi-transmitting plastic film with a certain thickness, and is made of PMMA, PET, PC, PP, PVC and other materials.
The substrate film 9 of the flexible film light-emitting circuit 1 provided by the invention is a flexible film, the light-emitting sheet 11 is made of an organic light-emitting semiconductor material, the light-emitting sheet 11 is printed on the substrate film 9 in a screen printing mode, the novel light-emitting circuit structure solves the problem that the occupied space of the light-emitting lamp beads is large, and the problems that the organic light-emitting semiconductor material generates low heat and has large power consumption when being electrified are also improved; the touch panel 0 is composed of a flexible film light-emitting circuit 1, an insulating interlayer 2 and a transparent film touch circuit 3, and the flexible film light-emitting circuit 1 and the transparent film touch circuit 3 occupy very small space and the film is soft and bendable, so that the control panel 0 can be arranged at any position and have any shape, and the requirements of different products can be met.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims (4)

1. The self-luminous touch control panel is characterized by comprising a panel, a flexible thin film light-emitting circuit, an interlayer and a transparent thin film touch control circuit, wherein the flexible thin film light-emitting circuit, the interlayer, the transparent thin film touch control circuit and the panel are sequentially arranged from bottom to top, functional icons are arranged on the panel, and touch keys arranged on the transparent thin film touch control circuit are arranged below positions corresponding to the functional icons; the touch control key and the light emitting sheet are respectively connected to the signal control box and the power control box through printed wires, a flexible circuit board plug connected with the control box is arranged on the printed wires, and the flexible film light emitting circuit comprises a substrate film; the light-guiding protective layer is coated on the substrate film, the light-guiding protective layer is used for protecting the printing uniformity of the light-emitting sheet and restraining the light-gathering effect of the light-emitting sheet, the light-emitting sheet is coated on the light-guiding protective layer, the conductive silver paste layer is fully covered on the light-emitting sheet, the conductive silver paste layer is connected with a printed wire, the circuit integral protective layer is coated on the whole circuit, the light-emitting sheet is made of an organic light-emitting semiconductor material, and the circuit integral protective layer is an insulating coating; the position of the touch key corresponds to the position of the light guide protection layer of the flexible film light-emitting circuit; the light guide protection layer is made of unidirectional light-transmitting materials, and only light on one side of the light-emitting sheet can transmit.
2. The self-luminous touch control panel made of the thin film light-emitting circuit according to claim 1, wherein the interlayer is insulating lime wool, black non-woven fabric or insulating rubber, and the thickness of the interlayer is 1.5 mm or more.
3. The self-luminous touch control panel made of a thin film light-emitting circuit according to claim 1, wherein the base thin film is a transparent flexible thin film.
4. The self-luminous touch control panel made of a thin film light emitting circuit according to claim 1, wherein the control method of the control panel is: after the circuit is electrified, the function icons on the touch panel are touched, the touch keys at the corresponding positions receive signals and send the signals to the signal control box, the signal control box sends the signals to the power control box, the power control box sends current signals to the corresponding luminous sheets, and the luminous sheets emit light to illuminate the function icon areas after touching on the panel.
CN201710883754.XA 2017-09-26 2017-09-26 Self-luminous touch control panel made of thin film light-emitting circuit Active CN107479769B (en)

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CN107479769B true CN107479769B (en) 2024-05-28

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