CN112965631A - Capacitive touch screen supporting writing - Google Patents
Capacitive touch screen supporting writing Download PDFInfo
- Publication number
- CN112965631A CN112965631A CN202110291128.8A CN202110291128A CN112965631A CN 112965631 A CN112965631 A CN 112965631A CN 202110291128 A CN202110291128 A CN 202110291128A CN 112965631 A CN112965631 A CN 112965631A
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- China
- Prior art keywords
- substrate
- touch screen
- capacitive touch
- layer
- transparent electrode
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- 239000010410 layer Substances 0.000 claims abstract description 79
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 239000012790 adhesive layer Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 13
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000002390 adhesive tape Substances 0.000 claims description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 2
- 239000002041 carbon nanotube Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001422033 Thestylus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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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)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a writing-supporting capacitive touch screen which comprises an upper transparent conducting layer and a lower transparent conducting layer, wherein the upper transparent conducting layer is composed of a first substrate and a first transparent electrode layer arranged on the first substrate, the lower transparent conducting layer is composed of a second substrate and a second transparent electrode layer arranged on the second substrate, the conducting surfaces of the first substrate and the second substrate are opposite, the periphery of the first substrate and the second substrate are bonded through double-sided adhesive layers, and an air layer is formed among the first substrate, the second substrate and the double-sided adhesive layers. The capacitive touch screen supports writing of a passive stylus with pen points of any thickness, and has the feeling of writing on paper when writing.
Description
Technical Field
The invention relates to the technical field of touch screens, in particular to a capacitive touch screen supporting writing.
Background
Compared with a resistive touch screen, the capacitive touch screen has the advantages of sensitive touch, multi-point identification, longer service life and the like, but the capacitive touch screen is inferior to the resistive touch screen in terms of writing function. Although the existing capacitive touch screen can also support writing, the passive pen point is too thick, the diameter of the pen point exceeds 6mm, and the writing fineness is poor; the active pen is high in cost due to the fact that logistics such as chips, circuits and power supplies are added. In addition, the existing capacitive screen is structured by attaching multiple layers of films without gaps, and unlike a resistive touch screen in which a layer of air is arranged between an upper electrode and a lower electrode, the capacitive screen has the feeling of writing on paper when writing on the upper film.
Disclosure of Invention
In order to solve the technical problems, the invention provides a capacitive touch screen which supports passive handwriting pen writing with pen points of any thickness and is used for writing on paper.
The technical scheme adopted by the invention is as follows:
the utility model provides a support capacitive touch screen who writes, includes transparent conducting layer and lower transparent conducting layer, goes up transparent conducting layer and comprises first base plate and the first transparent electrode layer that sets up on first base plate, and lower transparent conducting layer comprises second base plate and the second transparent electrode layer that sets up on the second base plate, and first base plate is relative with second base plate conducting surface, bonds through the double-sided adhesive layer all around, forms the air bed between first base plate, second base plate, the double-sided adhesive layer.
The transparent insulating layer is arranged between the first substrate and the second substrate and is attached to the first transparent electrode layer or the second transparent electrode layer.
Further, the thickness of the air layer is 50 μm to 100 μm.
Further, the first substrate is made of a PET material.
Further, the second substrate is made of glass, PC or pmanet material.
Further, the first transparent electrode layer and the second transparent electrode layer are made of ITO, IZO, nano silver or carbon nanotube material.
Further, the first transparent electrode layer and the second transparent electrode layer are made of an ITO material.
Further, the adhesive layer is composed of a double-sided adhesive tape.
The invention has the beneficial effects that: compared with the prior art, the capacitive touch screen supports the writing of a passive handwriting pen with pen points of any thickness, and has the feeling of writing on paper when writing. The capacitive touch screen is simple in structure, low in manufacturing cost, high in writing fineness and strong in practicability.
Drawings
Fig. 1 is an exploded schematic view of a capacitive touch screen according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a capacitive touch screen in embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of the capacitive touch screen during writing.
Reference numerals: 1: a second substrate; 2: a second electrode layer; 3: a transparent insulating layer; 4: a glue layer; 5: a first electrode layer; 6: a first substrate; 7: an air layer.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
Example 1
Referring to fig. 1 to 2, the present embodiment provides a writing-supporting capacitive touch screen, the capacitive touch screen is formed by stacking an upper transparent conductive layer, a double-sided adhesive layer 4, a transparent insulating layer 3, and a lower transparent conductive layer from top to bottom, the upper transparent conductive layer is composed of a first substrate 6 and a first transparent electrode layer 5 disposed on the first substrate, the lower transparent conductive layer is composed of a second substrate 1 and a second transparent electrode layer 2 disposed on the second substrate, the conductive surfaces of the first substrate 6 and the second substrate 1 are opposite, and are bonded by the adhesive layer 4, an air layer 7 is formed between the first substrate 6, the second substrate 1, and the double-sided adhesive layer 5, and the transparent insulating layer is attached to the second transparent electrode layer 2.
Referring to fig. 3, when the capacitive touch screen of the present invention is used, the stylus pen is pressed down on the upper substrate, i.e. the first substrate 6, with a strong force, so that the distance between the upper and lower transparent electrode layers is reduced, according to the formula of the plate capacitor: c is epsilon 0S/d, the distance d is reduced, the mutual capacitance between the two layers of electrodes is increased, the effect the same as that of finger touch is achieved, and therefore the specific touch position can be detected; the larger the force is, the larger the concave distance of the upper substrate is, the larger the distance change is, and the larger the change of the mutual capacitance value of the writing position is; according to the principle, the pressure used in handwriting can be sensed, and the handwriting can be accurately reflected. Therefore, the invention supports the writing of the passive handwriting pen with pen points of any thickness.
Further, the present invention can provide a feeling of writing on paper when writing by providing an air layer between the upper transparent conductive layer and the lower transparent conductive layer.
Because the upper and lower transparent electrode layers are overlapped face to face, if only one layer of air is arranged between the upper and lower transparent electrode layers, it is easy to conduct in contact during use, so it is preferable to arrange a transparent insulating layer between the first substrate and the second substrate, for example, in this embodiment, a transparent insulating layer 3 is attached to the surface of the lower transparent electrode layer, i.e. the second transparent electrode layer 2, so as to ensure that the upper and lower electrodes do not conduct in contact during use. In other embodiments, a transparent insulating layer may be attached to the surface of the upper transparent electrode layer, i.e. the first transparent electrode layer 5, so as to prevent the upper and lower electrodes from being in contact with each other.
In this embodiment, the adhesive layer 4 is formed of a double-sided tape, which is adhered to the peripheries of the opposite side surfaces of the first substrate and the second substrate, and an air layer 7 is formed between the first substrate 6, the second substrate 1, and the double-sided adhesive layer 5. The thickness of the double-sided tape determines the thickness of the air layer, the thickness of the air layer is less than 50 μm, the upper and lower transparent electrode layers are easy to contact and conduct when the double-sided tape is used, and the thickness of the air layer is more than 100 μm, so that the whole thickness of the capacitive touch screen is increased, and the manufacturing cost is increased.
The transparent insulating layer 3 is a layer of transparent insulating material, such as SiO2, plated on the second transparent electrode layer 2; or a transparent insulating film attached to the second transparent electrode layer 2. In this embodiment, the transparent insulating layer 3 is a transparent insulating film attached to the second transparent electrode layer 2. The capacitive touch screen designed in this way is simpler in structure and lower in manufacturing cost.
Preferably, the first substrate 6 is made of a PET material, the second substrate 1 is made of a glass, PC or pmanet material, and the first and second transparent electrode layers 5 and 2 are made of an ITO, IZO, nano-silver or nano-carbon tube material.
The capacitive touch screen made of the material has a better writing effect. More preferably, the first transparent electrode layer 5 and the second transparent electrode layer 2 are made of ITO material, so that better writing effect can be achieved.
The design of other parts of the capacitive touch screen is the prior art, and the details are not described here.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a support capacitive touch screen who writes, its characterized in that includes transparent conducting layer and lower transparent conducting layer, goes up transparent conducting layer and comprises first base plate and the first transparent electrode layer that sets up on first base plate, and lower transparent conducting layer comprises second base plate and the second transparent electrode layer that sets up on the second base plate, and first base plate is relative with second base plate conducting surface, bonds through the glue film all around, forms the air bed between first base plate, second base plate, the glue film.
2. A capacitive touch screen according to claim 1, further comprising a transparent insulating layer disposed between the first substrate and the second substrate, wherein the transparent insulating layer is attached to the first transparent electrode layer or the second transparent electrode layer.
3. A capacitive touch screen according to claim 1, wherein the layer of air is between 50 μm and 100 μm thick.
4. A capacitive touch screen according to claim 1, wherein the first substrate is made of PET material.
5. A capacitive touch screen according to claim 1, wherein the second substrate is made of glass, PC or pmanet material.
6. A capacitive touch screen according to claim 1, wherein the first and second transparent electrode layers are made of ITO, IZO, nano-silver or carbon nanotube material.
7. A capacitive touch screen according to claim 6, wherein the first and second transparent electrode layers are made of an ITO material.
8. A capacitive touch screen according to claim 1, wherein the adhesive layer is formed from double-sided adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291128.8A CN112965631A (en) | 2021-03-18 | 2021-03-18 | Capacitive touch screen supporting writing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291128.8A CN112965631A (en) | 2021-03-18 | 2021-03-18 | Capacitive touch screen supporting writing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112965631A true CN112965631A (en) | 2021-06-15 |
Family
ID=76279320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110291128.8A Pending CN112965631A (en) | 2021-03-18 | 2021-03-18 | Capacitive touch screen supporting writing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112965631A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667075A (en) * | 2008-09-01 | 2010-03-10 | 时纬科技股份有限公司 | Touch control panel and light transmittance increase method thereof |
| CN102707831A (en) * | 2011-03-14 | 2012-10-03 | 三星光通信株式会社 | Touch panel and touch screen having the same |
| CN103345346A (en) * | 2013-07-19 | 2013-10-09 | 信利光电股份有限公司 | Capacitive touch screen and method for binding flexible circuit board thereof |
| CN203405803U (en) * | 2013-08-19 | 2014-01-22 | 向火平 | Capacitive handwriting board |
| CN204331694U (en) * | 2014-12-31 | 2015-05-13 | 闽江学院 | A kind of novel projection-type capacitive touch screen |
| CN208834061U (en) * | 2018-08-08 | 2019-05-07 | 吴飞 | Cholesteric liquid crystal handwriting board device having a display function |
| KR20200009206A (en) * | 2018-07-18 | 2020-01-30 | 주식회사 와이즈터치 | Force Touch Device |
| CN214704591U (en) * | 2021-03-18 | 2021-11-12 | 南京华睿川电子科技有限公司 | Capacitive touch screen supporting writing |
-
2021
- 2021-03-18 CN CN202110291128.8A patent/CN112965631A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667075A (en) * | 2008-09-01 | 2010-03-10 | 时纬科技股份有限公司 | Touch control panel and light transmittance increase method thereof |
| CN102707831A (en) * | 2011-03-14 | 2012-10-03 | 三星光通信株式会社 | Touch panel and touch screen having the same |
| CN103345346A (en) * | 2013-07-19 | 2013-10-09 | 信利光电股份有限公司 | Capacitive touch screen and method for binding flexible circuit board thereof |
| CN203405803U (en) * | 2013-08-19 | 2014-01-22 | 向火平 | Capacitive handwriting board |
| CN204331694U (en) * | 2014-12-31 | 2015-05-13 | 闽江学院 | A kind of novel projection-type capacitive touch screen |
| KR20200009206A (en) * | 2018-07-18 | 2020-01-30 | 주식회사 와이즈터치 | Force Touch Device |
| CN208834061U (en) * | 2018-08-08 | 2019-05-07 | 吴飞 | Cholesteric liquid crystal handwriting board device having a display function |
| CN214704591U (en) * | 2021-03-18 | 2021-11-12 | 南京华睿川电子科技有限公司 | Capacitive touch screen supporting writing |
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