CN112860135A - Double-touch display panel and communication equipment - Google Patents
Double-touch display panel and communication equipment Download PDFInfo
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- CN112860135A CN112860135A CN201911102001.6A CN201911102001A CN112860135A CN 112860135 A CN112860135 A CN 112860135A CN 201911102001 A CN201911102001 A CN 201911102001A CN 112860135 A CN112860135 A CN 112860135A
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- touch panel
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- 239000000758 substrate Substances 0.000 claims abstract description 22
- 230000009977 dual effect Effects 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 7
- 238000001514 detection method Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
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- 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
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
-
- 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
-
- 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
Abstract
The application discloses two touch-control display panel and communications facilities, this two touch-control display panel includes: the capacitive touch panel comprises a first substrate and a first conductive layer arranged on one side of the first substrate, and the first conductive layer is shared by the capacitive touch panel and the resistive touch panel. Through the mode, the capacitive touch panel and the resistive touch panel can share the first conducting layer, time-sharing multiplexing is achieved, and the thickness of the double-touch display panel can be reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to a double-touch display panel and a communication device.
Background
The interphone can be used in different environments, the capacitive touch screen is convenient to operate and sensitive to touch in normal environments, but cannot be used in severe environments such as underwater, oil pollution or strong interference; the resistive touch screen is not afraid of oil stain, dust or strong interference, so that the development of interphone equipment compatible with the capacitive touch screen and the resistive touch screen is necessary.
The inventor of the application finds that in the prior art, in order to realize double touch, a resistance touch screen and a capacitance touch screen are respectively arranged on the front side and the back side of an electronic device, and touch operation is performed on two different touch screens, but because two screens are required for touch display, the thickness and the cost of a product are increased, the structure is complex, and the integration level is poor; or the surface type capacitive touch screen and the resistive touch screen are directly overlapped, whether capacitive touch or resistive touch is performed is judged through a software algorithm, voltage is applied to a second conducting layer in the composite touch panel, if the voltage detected by the first conducting layer is larger than a critical voltage, resistive touch is judged, otherwise, whether contact and contact positions exist is judged through capacitive touch, but real multi-point touch cannot be realized, the software algorithm is complex, the judgment difficulty is increased, errors are prone to occur, and the problem of pressing deviation is prone to occur after the resistive touch is used for a long time.
Disclosure of Invention
The problem that this application mainly solved provides a two touch-control display panel and communications facilities, can realize that electric capacity touch-control panel and resistance touch-control panel share first conducting layer, realizes the timesharing multiplexing, and can reduce two touch-control display panel thickness.
In order to solve the above technical problem, a technical scheme adopted by the present application is to provide a dual touch display panel, including: the capacitive touch panel comprises a first substrate and a first conductive layer arranged on one side of the first substrate, and the first conductive layer is shared by the capacitive touch panel and the resistive touch panel.
In order to solve the above technical problem, another technical solution adopted by the present application is to provide a communication device, where the communication device includes a dual-touch display panel, and the dual-touch display panel includes a resistive touch panel and a capacitive touch panel, which are stacked, where the capacitive touch panel includes a first substrate and a first conductive layer disposed on one side of the first substrate, and the first conductive layer is shared by the capacitive touch panel and the resistive touch panel.
Through the scheme, the beneficial effects of the application are that: the dual touch display panel includes: the resistance touch panel and the capacitance touch panel are stacked, and the capacitance touch panel and the resistance touch panel both comprise first conducting layers, so that the first conducting layers can be shared by the capacitance touch panel and the resistance touch panel, time sharing multiplexing is realized, resources are fully utilized, the thickness of the double-touch display panel can be reduced, and the use is facilitated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
fig. 1 is a schematic structural diagram of a dual touch display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another embodiment of a dual-touch display panel provided in the present application;
fig. 3 is a schematic structural diagram of a first electrode in another embodiment of a dual touch display panel provided in the present application;
fig. 4 is a schematic structural diagram of a second electrode in another embodiment of the dual touch display panel provided in the present application;
fig. 5 is a schematic structural diagram of a third electrode in another embodiment of a dual touch display panel provided in the present application;
fig. 6 is a schematic structural diagram of an embodiment of a communication device provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a dual-touch display panel provided in the present application, the dual-touch display panel including: a resistive touch panel 10 and a capacitive touch panel 20 are stacked.
The capacitive touch panel 20 includes a first substrate 201 and a first conductive layer 202 disposed on one side of the first substrate 201, and the first conductive layer 202 is shared by the capacitive touch panel 10 and the resistive touch panel 20.
The capacitive touch panel 20 is disposed on the resistive touch panel 10, when there is no metal shielding layer on the capacitive touch panel 20, the capacitive touch panel 20 is firstly touched by a user, and when the user touches the dual-touch display panel with a hand, charges can be transferred or induced to the capacitive touch panel 20, so that the capacitive touch panel 20 generates capacitance change, and the position of a touch point is obtained by detecting a capacitance value.
In order to realize dual touch, the resistive touch panel 10 and the capacitive touch panel 20 are integrated into one display panel in the present embodiment, and in order to reduce the thickness of the dual touch display panel, the first conductive layer 202 is reused, that is, the first conductive layer 202 is shared by the capacitive touch panel 20 and the resistive touch panel 10, and the first conductive layer 202 and other structures in the capacitive touch panel 20 form the complete capacitive touch panel 20, so that the capacitive touch panel 20 can work normally; similarly, the first conductive layer 202 and other structures in the resistive touch panel 10 form the complete resistive touch panel 10, so that the resistive touch panel 10 works normally; when the capacitive touch panel 20 works normally, the first conductive layer 202 is used by the capacitive touch panel 20, and the resistive touch panel 10 is in a non-working state; when the resistive touch panel 10 works normally, the first conductive layer 202 is used by the resistive touch panel 10, and the capacitive touch panel 20 is in a non-working state, so that display can be performed by using the first conductive layer 202 at different times, time-sharing multiplexing is realized, and mutual influence between the two touch panels is avoided.
In addition, which one of the resistive touch panel 10 and the capacitive touch panel 20 works normally can be selected according to actual conditions; for example, when a user is in a harsh environment such as underwater, oil, or strong interference, the resistive touch panel 10 may be used to achieve touch sensitivity, and in a relatively clean environment, the capacitive touch panel 20 may be used by the user.
The present embodiment provides a dual touch display panel, including: the resistance touch panel 10 and the capacitance touch panel 20 are stacked, and the capacitance touch panel 20 and the resistance touch panel 10 both include the first conductive layer 202, so that the first conductive layer 202 can be shared by the capacitance touch panel 20 and the resistance touch panel 10, time-sharing multiplexing is realized, resources are fully utilized, the thickness of the double-touch display panel can be reduced, and the use is facilitated.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of a dual-touch display panel provided in the present application, the dual-touch display panel includes: a resistive touch panel 10 and a capacitive touch panel 20 are stacked.
The resistive touch panel 10 includes a second substrate 101, a second conductive layer 102, spacer balls 103, and a first conductive layer 202; the second conductive layer 102 and the spacer balls 103 are stacked on the second substrate 101, and the first conductive layer 202 is disposed on the spacer balls 103.
The second substrate 101 may be a glass substrate; the first conductive layer 202 and the second conductive layer 102 may be Indium Tin Oxide (ITO) films, and the spacer balls 103 are disposed between the first conductive layer 202 and the second conductive layer 102.
Further, as shown in fig. 3 to fig. 5, the first conductive layer 202 includes a plurality of first electrodes 2021 arranged in a stripe shape, the second conductive layer 102 includes a plurality of second electrodes 1021 arranged in a stripe shape, and the first electrodes 2021 are perpendicular to the second electrodes 1021; specifically, when the first electrode 2021 and the second electrode 1021 are formed, the first conductive layer 202 and the second conductive layer 102 may be etched to obtain stripe-shaped first electrodes 2021 and second electrodes 1021; the first electrodes 2021 and the second electrodes 1021 are arranged in a stripe shape, and a mode that the first electrodes 2021 and the second electrodes 1021 are mutually perpendicular and crossed is adopted, so that multi-point touch of the resistive touch panel 10 is realized.
The resistive touch panel 10 includes an upper conductive layer and a lower conductive layer, the two conductive layers are provided with electrodes, a plurality of insulating spacer balls 103 are arranged between the two conductive layers, and the spacer balls 103 play a supporting role. When the dual-touch display panel is not pressed by a stylus, the first conductive layer 202 and the second conductive layer 102 are isolated by the spacer ball 103; when the dual touch display panel is pressed by a stylus, the first conductive layer 202 and the second conductive layer 102 are contacted at the pressing point and conducted up and down, and the first driving circuit 30 detects a voltage, so as to determine the position of the touch point.
The capacitive touch panel 20 includes a first conductive layer 202, a first substrate 201, a third conductive layer 203 disposed on the first substrate 201, and a cover plate 204. The material of the first substrate 201 may be polyethylene terephthalate (PET), and the third conductive layer 203 may also be an ITO film.
Further, the third conductive layer 203 includes a plurality of third electrodes 2031 arranged in a stripe shape, and the third electrodes 2031 are perpendicular to the first electrodes 2021.
The widths L1, L2, and L3 of the first electrode 2021, the second electrode 1021, and the third electrode 2031 may be the same, and in order to make the touch of the resistive touch panel 10 sensitive, the widths L1 and L2 of the first electrode 2021 and the second electrode 1021 are relatively small.
By combining the capacitive touch panel 20 and the resistive touch panel 10, a capacitive and resistive dual touch function is realized, and the first conductive layer 202 is reused, so that the thickness of the film layer can be reduced, and the transmittance can be improved.
The dual touch display panel further includes a first driving circuit 30 and a second driving circuit 40, wherein the first driving circuit 30 is electrically connected to the first conductive layer 202 and the second conductive layer 102, respectively, and the second driving circuit 40 is electrically connected to the first conductive layer 202 and the third conductive layer 203, respectively.
Further, the first driving circuit 30 and the second driving circuit 40 are configured to receive a touch switching instruction and ground the second conductive layer 102 or the third conductive layer 203 according to the touch switching instruction.
When the touch switching instruction indicates that the resistive touch panel 10 is in the working state, the first driving circuit 30 is configured to provide a driving voltage to each of the first electrodes 2021 and each of the second electrodes 1021, the second driving circuit 40 is configured to set the voltage of each of the third electrodes 2031 to the ground state, and when the dual-touch display panel is subjected to an external force, at least one first electrode 2021 is partially in contact with one second electrode 1021, the first driving circuit 30 is configured to obtain voltage values of all the second electrodes 1021, and a position larger than a preset voltage is recorded as a touched position.
In the present embodiment, the first conductive layer 202 at the bottom of the multiplexing capacitive touch panel 20 is exposed and etched to form the second conductive layer 102 into the stripe-shaped second electrode 1021. In one embodiment, the number of the first electrodes 2021 in the first conductive layer 202 is m, the number of the second electrodes 1021 in the second conductive layer 102 is n, when the resistive touch panel 10 is used, the driving voltage is applied to the ith first electrode 2021, i is greater than or equal to 1 and less than or equal to m, the first driving circuit 30 detects the jth second electrode 1021, j is greater than or equal to 1 and less than or equal to n; when the dual touch display panel is pressed, the ith first electrode 2021 contacts the jth second electrode 1021, and the first driving circuit 30 can detect that the voltage at the contact position of the ith first electrode 2021 and the jth second electrode 1021 is greater than 0, and can determine the position of the touch point (i, j). Similarly, the driving voltage sequentially scans the 1 st to mth first electrodes 2021, so as to realize multi-touch of the resistive touch panel 10.
When the resistive touch panel 10 is in an operating state, the first conductive layer 202 serves as a driving layer, and the second conductive layer 102 serves as a detection layer. When an external pressure presses the first conductive layer 202 and the second conductive layer 102, the first conductive layer and the second conductive layer are in contact with each other to form a path, and the first driving circuit 30 can detect a voltage at a contact position of the first electrode 2021 and the second electrode 1021; since the position where the first electrode 2021 and the second electrode 1021 cannot contact cannot form a via, the voltage value measured by the first driving circuit 30 is 0, so that the position of the touch point can be obtained by detecting the voltage value greater than 0, and the position of the first electrode 2021 and the second electrode 1021 on the first conductive layer 202 and the second conductive layer 102 corresponding to the voltage value is taken as the coordinate of the touch point.
When the touch switching instruction indicates that the capacitive touch panel 20 is in an operating state, the first driving circuit 30 is configured to set the voltage of each second electrode 1021 to a ground voltage, and the second driving circuit 40 is configured to provide a driving voltage to each first electrode 2021 and each third electrode 2031, respectively.
When a user touches the double-touch display panel with a finger, the capacitance between the horizontal and vertical electrodes corresponding to the touch point is affected, when the capacitance is detected, the horizontal third electrode 2031 sequentially sends out an excitation signal, and the vertical first electrode 2021 simultaneously receives the signal, so that the capacitance and the variation of the intersection point of all the horizontal electrodes and the vertical electrodes are obtained, and the position of the touch point is obtained.
Normally, the capacitive touch panel 20 is used by default, the switching between the capacitive touch panel 20 and the resistive touch panel 10 can be performed by directly selecting and switching through a key, and when the capacitive touch panel 20 is used, the second conductive layer 102 is grounded. Meanwhile, since the first conductive layer 202 is shared, the scheme in the embodiment can not only realize resistance-capacitance dual touch, but also reduce material layers and improve transmittance
In the prior art, because the resistances of the first conductive layer 202 and the second conductive layer 102 are uniform, a controller connected to the electrodes can calculate the horizontal and vertical coordinates of the touch point through voltage division detection, so as to confirm the touch point, but under the influence of the environment such as humidity or heat, the first conductive layer 202 is easily oxidized, so that the conductive uniformity is damaged, the position calculation error occurs, and the coordinate offset phenomenon occurs in the conventional resistive touch panel 10. In this embodiment, the first electrode 2021 and the second electrode 1021 only have a conductive function, and no specific resistance value is calculated, and the first driving circuit 30 can determine the corresponding horizontal and vertical coordinates as long as it can sense that the voltage of the first electrode 2021 is greater than 0, so as to locate the touch point, and the non-uniformity of the impedance does not affect the determination of the touch point, thereby solving the offset problem.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of a communication device provided in the present application, where the communication device 60 includes a dual-touch display panel 61, and the dual-touch display panel 61 includes a resistive touch panel and a capacitive touch panel (not shown in the figure) that are stacked, where the resistive touch panel includes a first substrate and a first conductive layer disposed on one side of the first substrate, and the first conductive layer is shared by the capacitive touch panel and the resistive touch panel; the specific structure of the dual-touch display panel 61 is shown in the above embodiments, and is not described herein again; the communication device can be a mobile phone or an interphone and other devices capable of displaying.
The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.
Claims (10)
1. A dual touch display panel, comprising: a resistive touch panel and a capacitive touch panel arranged in a stack,
the capacitive touch panel comprises a first substrate and a first conductive layer arranged on one side of the first substrate, and the first conductive layer is shared by the capacitive touch panel and the resistive touch panel.
2. The dual touch display panel of claim 1,
the resistance touch panel comprises a second substrate, a second conducting layer and a spacing ball, wherein the second conducting layer and the spacing ball are stacked on the second substrate, and the first conducting layer is arranged on the spacing ball.
3. The dual touch display panel of claim 2,
the first conductive layer comprises a plurality of first electrodes arranged in a strip shape, the second conductive layer comprises a plurality of second electrodes arranged in a strip shape, and the first electrodes are perpendicular to the second electrodes.
4. The dual touch display panel of claim 2,
the capacitive touch panel comprises a third conductive layer arranged on the first substrate and a cover plate.
5. The dual touch display panel of claim 4,
the third conductive layer comprises a plurality of third electrodes arranged in a strip shape, and the third electrodes are perpendicular to the first electrodes.
6. The dual touch display panel of claim 4,
the dual-touch display panel further comprises a first driving circuit and a second driving circuit, wherein the first driving circuit is electrically connected with the first conducting layer and the second conducting layer respectively, and the second driving circuit is electrically connected with the first conducting layer and the third conducting layer respectively.
7. The dual touch display panel of claim 6,
the first driving circuit and the second driving circuit are used for receiving a touch switching instruction and grounding the second conductive layer or the third conductive layer respectively according to the touch switching instruction.
8. The dual touch display panel of claim 7,
when the touch switching instruction indicates that the resistive touch panel is in a working state, the first driving circuit is used for respectively providing driving voltage for each first electrode and each second electrode, the second driving circuit is used for setting the voltage of each third electrode to be in a grounding state, when the dual-touch display panel is subjected to external force, at least one first electrode is partially contacted with one second electrode, the first driving circuit is used for acquiring voltage values of all the second electrodes, and positions larger than preset voltage are recorded as touched positions.
9. The dual touch display panel of claim 7,
when the touch switching instruction indicates that the capacitive touch panel is in a working state, the first driving circuit is configured to set a voltage of each of the second electrodes to a ground voltage, and the second driving circuit is configured to provide a driving voltage for each of the first electrodes and each of the third electrodes, respectively.
10. A communication device, comprising a dual touch display panel; the dual-touch display panel comprises a resistance touch panel and a capacitance touch panel which are arranged in a stacked mode, wherein the capacitance touch panel comprises a first base material and a first conducting layer arranged on one side of the first base material, and the first conducting layer is shared by the capacitance touch panel and the resistance touch panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102001.6A CN112860135A (en) | 2019-11-12 | 2019-11-12 | Double-touch display panel and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102001.6A CN112860135A (en) | 2019-11-12 | 2019-11-12 | Double-touch display panel and communication equipment |
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| Publication Number | Publication Date |
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| CN112860135A true CN112860135A (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911102001.6A Pending CN112860135A (en) | 2019-11-12 | 2019-11-12 | Double-touch display panel and communication equipment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551721A (en) * | 2008-04-01 | 2009-10-07 | 胜华科技股份有限公司 | Touch-control panel and driving method thereof |
| CN101644841A (en) * | 2008-08-07 | 2010-02-10 | 索尼株式会社 | Liquid crystal display device and a method of manufacturing the same |
| CN101726890A (en) * | 2008-10-28 | 2010-06-09 | 瀚宇彩晶股份有限公司 | Embedded capacitive induction input display device |
| US20190004663A1 (en) * | 2017-06-29 | 2019-01-03 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Touch display panel and touch display device |
-
2019
- 2019-11-12 CN CN201911102001.6A patent/CN112860135A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551721A (en) * | 2008-04-01 | 2009-10-07 | 胜华科技股份有限公司 | Touch-control panel and driving method thereof |
| CN101644841A (en) * | 2008-08-07 | 2010-02-10 | 索尼株式会社 | Liquid crystal display device and a method of manufacturing the same |
| CN101726890A (en) * | 2008-10-28 | 2010-06-09 | 瀚宇彩晶股份有限公司 | Embedded capacitive induction input display device |
| US20190004663A1 (en) * | 2017-06-29 | 2019-01-03 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Touch display panel and touch display device |
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