CN208421797U - A kind of capacitive touch screen - Google Patents
A kind of capacitive touch screen Download PDFInfo
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- CN208421797U CN208421797U CN201821033450.0U CN201821033450U CN208421797U CN 208421797 U CN208421797 U CN 208421797U CN 201821033450 U CN201821033450 U CN 201821033450U CN 208421797 U CN208421797 U CN 208421797U
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- touch screen
- transparency conducting
- conducting layer
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Abstract
The utility model provides a kind of capacitive touch screen, including cover board, transparent double face conduction tunic, and flexible circuit board, the material of the cover board is transparent PMMA, the cover board is Nian Jie with the transparent double face conduction tunic, the cover board and the transparent double face conduction tunic pass through optics glue sticking, the flexible circuit board includes first input end and the second input terminal, the transparent double face conduction tunic includes basement membrane, for detecting the first transparency conducting layer of touch screen contact lateral coordinates position, for detecting the second transparency conducting layer of touch screen contact longitudinal coordinate position, the first electrode lead wire set being electrically connected with first transparency conducting layer, and the second electrode lead wire set being electrically connected with second transparency conducting layer.The utility model compared with prior art, saves one layer of conductive tunic and one layer of optical cement, and then keep entire touch screen structure simple, processes simpler, raising production efficiency.
Description
Technical field
The utility model relates to a kind of touch screen technology field more particularly to a kind of capacitive touch screens.
Background technique
Touch screen is also known as touch screen, is widely used in our daily life every field, such as mobile phone, media player, leads
Boat system, digital camera, Digital Frame, PAD, game station, display, electrical equipment control, Medical Devices etc..Such as Fig. 1 to Fig. 2 institute
Show, a kind of capacitive touch screen of the prior art includes cover board 1 ', the first electrically conducting transparent tunic 2 ', the second electrically conducting transparent tunic
3 ' and flexible circuit board 4 ', the flexible circuit board 4 ' includes first input end 41 ' and the second input terminal 42 ', and described first
Electrically conducting transparent tunic 2 ' is bonded in the right side of the cover board 1 ', the first electrically conducting transparent tunic 2 ' and institute by optical cement 5 '
The electric connection of first input end 41 ' is stated, to be bonded in described first transparent by optical cement 5 ' for the second electrically conducting transparent tunic 3 '
The right side of conductive tunic 2 ', second input terminal 42 ' are electrically connected with the second electrically conducting transparent tunic 3 '.Contact position
Lateral coordinates be to be generated by the first electrically conducting transparent tunic 2 ', and transmitted by the first input end 41 ' of flexible circuit board 4 '
Signal gives complete machine mainboard.The longitudinal coordinate of contact position is to be generated by the second electrically conducting transparent tunic 3 ', and pass through flexible circuit
Second input terminal 42 ' of plate 4 ' delivers a signal to complete machine mainboard.Shortcoming is: the first transparency conducting layer in the prior art and
Second transparency conducting layer is dual-layer, single-sided conductive film, and the capacitive touch screen of this structure needs two electrically conducting transparent tunics point
Not come the transverse and longitudinal coordinate for transmitting contact, and two layers of optics glue sticking is also needed, makes total complicated in this way, processing cost is high.
Utility model content
A kind of capacitive touch screen that the utility model aim proposes to solve the above-mentioned problems.
It is achieved through the following technical solutions above-mentioned purpose:
The utility model provides a kind of capacitive touch screen, including cover board, transparent double face conduction tunic and flexible circuit
The material of plate, the cover board is transparent PMMA, and the cover board is Nian Jie with the transparent double face conduction tunic, the cover board and institute
Transparent double face conduction tunic is stated by optics glue sticking, the flexible circuit board includes first input end and the second input terminal, institute
Transparent double face conduction tunic is stated to include basement membrane, the first transparency conducting layer for detecting touch screen contact lateral coordinates position, use
In detection touch screen contact longitudinal coordinate position the second transparency conducting layer, be electrically connected with first transparency conducting layer the
One contact conductor group and the second electrode lead wire set being electrically connected with second transparency conducting layer, described first transparent leads
The upper surface of the basement membrane, second transparency conducting layer and second electricity is arranged in electric layer and the first electrode lead wire set
The lower surface of the basement membrane is arranged in pole lead wire set, and the first electrode lead wire set and the first input end are electrically connected, institute
It states second electrode lead wire set and second input terminal is electrically connected.
Further, the optical cement is OCA optical cement.
Further, first transparency conducting layer and the second transparency conducting layer are ITO conductive layer.
It further, further include anisotropic conductive adhesive, the first electrode lead wire set and the first input end are described in
Anisotropic conductive adhesive is electrically connected, and the second electrode lead wire set is electrically connected with second input terminal by the anisotropic conductive adhesive
It connects.
Further, the basement membrane is PET hyaline membrane.
Further, the material of the first electrode lead wire set and the second electrode lead wire set is printing conductive silver paste.
The beneficial effects of the utility model are: cover board uses PMMA material, not only can shatter-resistant but also in process, with
Glass material is compared, and operator will not scratch hand；Using transparent double face conduction tunic, two conductive layers are equipped on the film,
For detecting the transverse and longitudinal coordinate of contact respectively, compared with prior art, one layer of conductive tunic and one layer of optical cement are saved, in turn
Keep entire touch screen structure simple, processes simpler, raising production efficiency.
Detailed description of the invention
Fig. 1 is the front schematic view of prior art capacitive touch screen；
Fig. 2 is the locations of structures diagrammatic cross-section of prior art capacitive touch screen；
Fig. 3 is the front schematic view of the utility model；
Fig. 4 is the locations of structures diagrammatic cross-section of the utility model；
Fig. 5 is that basement membrane, the first transparency conducting layer and second in the transparent double face conduction tunic of the utility model transparent are led
Electric layer locations of structures diagrammatic cross-section；
Fig. 6 is the structure bit of the first input end of the flexible circuit board of the utility model, first electrode lead wire set and basement membrane
Set schematic diagram；
Fig. 7 is the structure bit of the second input terminal of the flexible circuit board of the utility model, second electrode lead wire set and basement membrane
Set schematic diagram.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing and specific embodiment:
Shown in Fig. 3 to Fig. 7, the utility model provides a kind of capacitive touch screen, including cover board 1, transparent double face conductive layer
Film 2 and flexible circuit board 3, the material of the cover board 1 are transparent PMMA (Chinese is acrylic), the cover board 1 with
The transparent double face conduction tunic 2 is bonded, and it is be bonded that the cover board 1 and the transparent double face conduction tunic 2 pass through optical cement 4, institute
State flexible circuit board 3 include first input end 31 and the second input terminal 32, the transparent double face conduction tunic 2 include basement membrane 21,
For detecting the first transparency conducting layer 22 of touch screen contact lateral coordinates position, for detecting touch screen contact longitudinal coordinate position
The second transparency conducting layer 23 for setting, the first electrode lead wire set 24 being electrically connected with first transparency conducting layer and with institute
State the second electrode lead wire set 25 of the second transparency conducting layer electric connection, first transparency conducting layer 22 and the first electrode
The upper surface of the basement membrane 21 is arranged in lead wire set 24, and second transparency conducting layer 23 and the second electrode lead wire set 25 are set
It sets in the lower surface of the basement membrane 21, the first electrode lead wire set 24 is electrically connected with the first input end 31, and described the
Two contact conductor groups 25 are electrically connected with second input terminal 32.
The optical cement 4 is OCA optical cement, which is colorless and transparent, light transmission rate 90% or more, cementing strong
Degree is good, can solidify under room temperature or medium temperature, and have the features such as cure shrinkage is small.
First transparency conducting layer 22 and the second transparency conducting layer 23 are ITO (Chinese is tin indium oxide) conduction
Layer.ITO conductive layer itself has very strong electric conductivity, when user's touch cover, certain point of the ITO conductive layer on basement membrane 21
Capacitance can obviously change, high sensitivity.
It further include anisotropic conductive adhesive (figure is not marked), the first electrode lead wire set 24 passes through institute with the first input end 31
Anisotropic conductive adhesive electric connection is stated, the second electrode lead wire set 25 passes through the anisotropic conductive adhesive with second input terminal 32
It is electrically connected.Anisotropic conductive adhesive is a kind of conductive in compression aspect, and perpendicular to the nonconducting one kind of pressure direction
Adhesive conductive can not only also play fixed function, draw first electrode lead wire set with the first input end, second electrode
Line group is respectively turned on and is connected firmly with second input terminal, it is not easy to be in contact bad and lead to open circuit.
The basement membrane 21 is PET hyaline membrane.PET hyaline membrane film forming speed is fast, and adhesiveness is good, it can be achieved that large-area coating film.
The material of the first electrode lead wire set 24 and the second electrode lead wire set 25 is printing conductive silver paste.The conduction
Silver paste has solidification temperature low, the high feature of adhesive strength.
The transparent double face conductive layer is a kind of single-layer double-side conductive film, the 2 film manufacturing process of transparent double face conductive layer
As follows: 1. are respectively adopted magnetron sputtering film preparation ITO conductive layer in the upper and lower surfaces of basement membrane.2. passing through etching paste
Or soda acid is etched on ITO conductive layer and produces ITO pattern.3. making first electrode lead with silk-screen printing or silk-screen printing
Combine second electrode lead wire set.
Above are merely preferred embodiments of the utility model, the protection scope of the utility model is not limited merely to above-mentioned
Embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should be pointed out that pair
For those skilled in the art, several improvements and modifications without departing from the principle of the utility model,
It should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of capacitive touch screen, which is characterized in that including cover board, transparent double face conduction tunic and flexible circuit board, institute
State cover board material be transparent PMMA, the cover board is Nian Jie with the transparent double face conduction tunic, the cover board with it is described
For bright two-sided conductive tunic by optics glue sticking, the flexible circuit board includes first input end and the second input terminal, described
Bright two-sided conductive tunic includes basement membrane, the first transparency conducting layer for detecting touch screen contact lateral coordinates position, for examining
The first electricity surveying the second transparency conducting layer of touch screen contact longitudinal coordinate position, being electrically connected with first transparency conducting layer
Pole lead wire set and the second electrode lead wire set being electrically connected with second transparency conducting layer, first transparency conducting layer
The upper surface of the basement membrane is set with the first electrode lead wire set, and second transparency conducting layer and the second electrode are drawn
Line group is arranged in the lower surface of the basement membrane, and the first electrode lead wire set and the first input end are electrically connected, and described the
Two contact conductor groups and second input terminal are electrically connected.
2. a kind of capacitive touch screen according to claim 1, it is characterised in that: the optical cement is OCA optical cement.
3. a kind of capacitive touch screen according to claim 1, it is characterised in that: first transparency conducting layer and second
Transparency conducting layer is ITO conductive layer.
4. a kind of capacitive touch screen according to claim 1, it is characterised in that: it further include anisotropic conductive adhesive, described
One contact conductor group is electrically connected with the first input end by the anisotropic conductive adhesive, the second electrode lead wire set and institute
The second input terminal is stated to be electrically connected by the anisotropic conductive adhesive.
5. a kind of capacitive touch screen according to claim 1, it is characterised in that: the basement membrane is PET hyaline membrane.
6. a kind of capacitive touch screen according to claim 1, it is characterised in that: the first electrode lead wire set and described
The material of second electrode lead wire set is printing conductive silver paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821033450.0U CN208421797U (en) | 2018-07-02 | 2018-07-02 | A kind of capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821033450.0U CN208421797U (en) | 2018-07-02 | 2018-07-02 | A kind of capacitive touch screen |
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| Publication Number | Publication Date |
|---|---|
| CN208421797U true CN208421797U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821033450.0U Active CN208421797U (en) | 2018-07-02 | 2018-07-02 | A kind of capacitive touch screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113625154A (en) * | 2021-08-11 | 2021-11-09 | 翔实光电科技(昆山)有限公司 | False pressure testing device for touch screen and using method thereof |
-
2018
- 2018-07-02 CN CN201821033450.0U patent/CN208421797U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113625154A (en) * | 2021-08-11 | 2021-11-09 | 翔实光电科技(昆山)有限公司 | False pressure testing device for touch screen and using method thereof |
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