CN208722164U - Touch screen - Google Patents
Touch screen Download PDFInfo
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- CN208722164U CN208722164U CN201821354354.6U CN201821354354U CN208722164U CN 208722164 U CN208722164 U CN 208722164U CN 201821354354 U CN201821354354 U CN 201821354354U CN 208722164 U CN208722164 U CN 208722164U
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- touch screen
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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
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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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 utility model discloses a kind of touch screens.Wherein, touch screen includes: multiple first passages and multiple second channels, and multiple first passages intersect with multiple second channels, wherein, the touch screen further include: drive control circuit, drive control circuit are provided with multiple driving pins, and driving pin connects one to one with first passage；For driving pin for exporting the channel driving signals driven to first passage, the voltage value between at least two channel driving signals is different；Circuit is received, circuit is received and is connect with second channel, for detecting the signal parameter of second channel；Processor, processor and reception circuit connection, for handling signal parameter.The technical issues of scan period that the utility model solves the drive scheme driving touch screen of touch screen in the prior art is long, and performance declines.
Description
Technical field
The utility model relates to touch screen fields, in particular to a kind of touch screen.
Background technique
It is general by the way of timesharing driving in existing touch screen drive scheme, the circuit structure of touch screen such as Fig. 1
Shown, the drive pulse signal of row of channels is as shown in Fig. 2, as depicted in figs. 1 and 2, synchronization drives a row of channels, simultaneously
The signal in multiple column channels is received, and the voltage of different moments generation driving signal is identical.Assuming that one row of channels of driving
Sweep time is 0.1ms, as shown in Fig. 2, the driving time for then completing a scan period is the sweep time of each row of channels
With the product namely driving time T=0.1ms*126=12.6ms of row of channels number.With the increase of row of channels quantity, scanning
Period can be elongated, and performance can be synchronized and is decreased obviously, moreover, the bandwidth with driving pulse is wider, is easy the work with display screen
Crosstalk occurs for frequency, and touch function performance is caused to decline.
For touch screen in the prior art drive scheme driving touch screen scan period it is long, and performance decline ask
Topic, currently no effective solution has been proposed.
Utility model content
The utility model embodiment provides a kind of touch screen, at least to solve the drive scheme of touch screen in the prior art
Drive the scan period of touch screen long, and the technical issues of performance decline.
According to an aspect of an embodiment of the present invention, a kind of touch screen is provided, comprising: multiple first passages and multiple
Two channels, multiple first passages intersect with multiple second channels, the touch screen further include: drive control circuit, drive control electricity
Road is provided with multiple driving pins, and driving pin connects one to one with first passage；Drive pin logical to first for exporting
The channel driving signals that road is driven, the voltage value between at least two channel driving signals are different；Circuit is received, electricity is received
Road is connect with second channel, for detecting the signal parameter of second channel；Processor, processor and reception circuit connection, are used for
Signal parameter is handled.
Further, drive control circuit is provided at least two groups driving mould group, and driving mould group includes at least two drivings
Pin；The voltage value for being set to the channel driving signals of the driving pin output in the same driving mould group is identical, adjacent driven
The voltage value of the channel driving signals of driving pin output between mould group is different.
Further, it is set to the driver' s timing of the channel driving signals of the driving pin output in the same driving mould group
The driver' s timing of difference, the channel driving signals of the driving pin output between adjacent driven mould group is identical.
Further, drive control circuit further include: controller, controller are provided with control terminal, and control terminal is for generating
Control signal；Bleeder circuit, bleeder circuit are provided with partial pressure input terminal and at least two partial pressure output ends, partial pressure input terminal and control
End connection processed, at least two partial pressure output ends connect one to one at least two groups driving mould group, and bleeder circuit is used for control
Signal is divided, and is exported the control signal after partial pressure to driving mould group by partial pressure output end.
Further, drive control circuit further include: booster circuit, booster circuit are provided with boosting input terminal and boost defeated
Outlet, boosting input terminal are connect with control terminal, and boosting output end is connect with partial pressure input terminal, and booster circuit is used for control signal
It boosts, and is exported the control signal after boosting to bleeder circuit by boosting output end；Bleeder circuit is used for boosting
Control signal afterwards is divided.
Further, booster circuit is connect by translation interface with controller.
Further, translation interface is connect with universal serial bus and universal asynchronous receiving-transmitting transmitter respectively.
Further, in the case where touch screen is capacitance touch screen, signal parameter is capacitance；It is resistance in touch screen
In the case where touch screen, signal parameter is voltage value.
In the utility model embodiment, the drive control circuit channels drive different by driving pin output voltage value
Signal detects the signal parameter of second channel by receiving circuit, so that processor can join signal to drive first passage
Number is handled, and realizes the purpose of detection touch operation.Compared with prior art, due between at least two channel driving signals
Voltage value it is different, so that drive control circuit can be scanned at least two first passages in synchronization, so that whole
The driving time in a period shortens, that is, shortening the scan period, to reach the shortening scan period, promotes scanning speed
Degree reduces influence of the row of channels quantity increase to performance, avoids the interference to the working frequency of touch screen, and improving performance reduces
The technical effect of cost, and then the scan period for solving the drive scheme driving touch screen of touch screen in the prior art is long, and
The technical issues of performance declines.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram of the circuit structure of touch screen according to prior art；
Fig. 2 is a kind of schematic diagram of the pulse signal of row of channels according to prior art；
Fig. 3 is the schematic diagram according to a kind of touch screen of the utility model embodiment；
Fig. 4 is the schematic diagram according to a kind of circuit structure of optional touch screen of the utility model embodiment；
Fig. 5 is the schematic diagram according to a kind of pulse signal of optional row of channels of the utility model embodiment；
Fig. 6 is the schematic diagram according to another touch screen of the utility model embodiment；
Fig. 7 is the schematic diagram according to another touch screen of the utility model embodiment；And
Fig. 8 is the schematic diagram according to a kind of optional touch screen of the utility model embodiment.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model a part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
It should be noted that the specification and claims of the utility model and term " first " in above-mentioned attached drawing,
" second " etc. is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that in this way
The data used are interchangeable under appropriate circumstances, so that the embodiments of the present invention described herein can be in addition at this
In illustrate or description those of other than sequence implement.In addition, term " includes " and " having " and their any deformation, meaning
It includes to be not necessarily limited to clearly arrange for example, containing a series of system of units, product or equipment that figure, which is to cover non-exclusive,
Those of out unit, but may include other units being not clearly listed or intrinsic for these products or equipment.
According to the utility model embodiment, a kind of embodiment of touch screen is provided, touch screen includes: multiple first passages
With multiple second channels, multiple first passages intersect with multiple second channels.
Specifically, above-mentioned touch screen can be capacitance touch screen either electric resistance touch screen, but be not limited only to this, at this
In utility model embodiment, it is described in detail by taking capacitance touch screen as an example.As shown in Figure 1, touch screen can be led to by multiple rows
Road and multiple column channels are constituted, and row of channels and column channel are mutually perpendicular to intersect, and intersection forms capacitive node, pass through detection electricity
The situation of change for holding parameter on node, can determine user to the position where the touch operation of touch screen, due to touch screen
Row of channels is usually driven in drive scheme, and receives the signal in column channel, it is logical with multiple first in the utility model embodiment
Road is row of channels, and multiple second channels are that column channel is described in detail.
Fig. 3 is according to a kind of schematic diagram of touch screen of the utility model embodiment, as shown in figure 3, the touch screen also wraps
Include: drive control circuit 32 receives circuit 34 and processor 36.
Wherein, drive control circuit, drive control circuit are provided with multiple driving pins, driving pin and first passage one
One is correspondingly connected with；Driving pin is for exporting the channel driving signals driven to first passage, at least two channels drives
Voltage value between signal is different.
Optionally, as shown in figure 3, drive control circuit 32 is provided at least two groups driving mould group 38, driving mould group includes
At least two driving pins；It is set to the voltage value phase of the channel driving signals of the driving pin output in the same driving mould group
Together, the voltage value of the channel driving signals of the driving pin output between adjacent driven mould group is different.
It specifically, can be by all row of channels on touch screen according to number in order to reduce scan periods of multiple row of channels
Amount is divided into multiple groups row of channels, and the quantity of every group of row of channels can be the same or different, and drive control circuit can be by more
Group driving mould group controls multiple groups row of channels simultaneously in synchronization, then drives the quantity of mould group and the number of packet one of row of channels
It causes, the quantity of above-mentioned driving mould group can be 2-5, can be carried out according to the quantity of touch screen data feedback channel in real process true
It is fixed, in the utility model embodiment, to be illustrated for drive the quantity of mould group be 3.Further, logical in order to guarantee to arrange
The signal received simultaneously on road is different, therefore, to assure that the voltage of the channel driving signals of synchronization different driving module output
The voltage of difference, channel driving signals can be determined according to the voltage carrying capacity of row of channels, be implemented in the utility model
In example, it is described in detail so that voltage range is 25-28V as an example.
In a kind of optional scheme, it can be driven by drive control circuit in the different channel of synchronization output voltage
Dynamic signal, to realize the subregion between row of channels grouping, partial pressure control.
Optionally, it is set to the driver' s timing of the channel driving signals of the driving pin output in the same driving mould group not
Together, the driver' s timing of the channel driving signals of the driving pin output between adjacent driven mould group is identical.
Specifically, the driving pin in the same drive module group can chronologically sequence successively drive in respective packets
The driver' s timing of the channel driving signals in each row of channels namely each boat channel is different, to realize in row of channels grouping
Time-sharing control.Since the voltage of the channel driving signals of different driving module output is different, the channel of different driving module output
The driver' s timing of driving signal can be identical, so as to shorten sweep time.
For example, as shown in Figure 4 and Figure 5, row of channels can be divided into 3 groupings, the channel of driving row of channels grouping 1 is driven
The voltage of dynamic signal is 25V, and the voltage of the channel driving signals of driving row of channels grouping 2 is 26V, driving row of channels grouping 3
The voltage of channel driving signals is 28V, and the sweep time that each row of channels is grouped interior row of channels is 0.1ms, same row of channels point
Multiple row of channels are successively driven in group, then sweep time and a row of the driving time of whole cycle for each row of channels
The product of most quantity of row of channels in channel packet.
Circuit 34 is received, circuit is received and is connect with second channel, for detecting the signal parameter of second channel.
Optionally, in the case where touch screen is capacitance touch screen, signal parameter is capacitance；It is resistive touch in touch screen
In the case where touching screen, signal parameter is voltage value.
Specifically, the signal parameter in all column channels can be received simultaneously by receiving circuit, by detecting on each column channel
The variation of signal parameter, it can be determined that go out whether user carries out touch operation.
In a kind of optional scheme, for capacitance touch screen, when user carries out touch operation to touch screen, user's touching
The capacitance for touching position can change, and therefore, by detecting the situation of change of capacitance on each column channel, can determine use
Whether family carries out touch operation.
In another optional scheme, for electric resistance touch screen, when user carries out touch operation to touch screen, user
The voltage value of touch location can change, and therefore, by detecting the situation of change of voltage value on each column channel, can determine
Whether user carries out touch operation.
Processor 36, processor and reception circuit connection, for handling signal parameter.
Specifically, different in same grouping since the voltage of the channel driving signals of synchronization difference row of channels is different
The driver' s timings of the channel driving signals of row of channels is different, then processor receive receive signal parameter that circuit detects it
Afterwards, if multiple column Air conduct measurements to signal parameter convert, can be according to parameter value changed time, each
The sweep time of row of channels and design parameter value determine the corresponding row of channels of touch operation, true according to row of channels and column channel
Fixed coordinate, the specific location of available touch operation, to realize the touch function of touch screen.
It should be noted that the voltage due to channel driving signals changes, in order to ensure touch screen performance, need pair
Existing touch screen improves, and to ensure that the voltage of channel driving signals not will lead to row of channels damage, influences touch screen
Normal use.
In the utility model above-described embodiment, the drive control circuit channel different by driving pin output voltage value
Driving signal detects the signal parameter of second channel by receiving circuit, so that processor can be to letter to drive first passage
Number parameter is handled, and realizes the purpose of detection touch operation.Compared with prior art, due at least two channel driving signals
Between voltage value it is different, so that drive control circuit can be scanned at least two first passages in synchronization, make
The driving time for obtaining whole cycle shortens, that is, shortening the scan period, to reach the shortening scan period, promotion is swept
It retouches speed, reduces row of channels quantity and increase influence to performance, avoid the interference to the working frequency of touch screen, improving performance,
The technical effect of cost is reduced, and then solves the scan period of the drive scheme driving touch screen of touch screen in the prior art
The technical issues of long, and performance declines.
Optionally, as shown in fig. 6, drive control circuit 32 includes: controller 62 and bleeder circuit 64.
Wherein, controller 62, controller are provided with control terminal, and control terminal is for generating control signal.
Specifically, above-mentioned controller can be the MCU of touch screen (micro-control unit, full name be Microcontroller
Unit), for generating the control signal of driving mould group.
Bleeder circuit 64, bleeder circuit be provided with partial pressure input terminal and at least two partial pressure output ends, partial pressure input terminal with
Control terminal connection, at least two partial pressure output ends connect one to one at least two groups driving mould group, and bleeder circuit is used for control
Signal processed is divided, and is exported the control signal after partial pressure to driving mould group by partial pressure output end.
Specifically, above-mentioned bleeder circuit can be composed in series by multiple resistance, and the resistance value of each resistance is different, thus
The voltage value got on each resistance is also different.Since the control signal after partial pressure is to divide to obtain from original control signal
, in order to ensure the voltage of channel driving signals can satisfy driving demand, namely, it is ensured that the control signal after partial pressure, control
The voltage for the control signal that device generates needs to be greater than the summation of the control signal after partial pressure.
Optionally, as shown in fig. 7, drive control circuit 32 further include: booster circuit 72.
Wherein, booster circuit, booster circuit are provided with boosting input terminal and boosting output end, boost input terminal and control terminal
Connection, boosting output end are connect with partial pressure input terminal, and booster circuit is used to boost to control signal, and passes through boosting output
End exports the control signal after boosting to bleeder circuit；Bleeder circuit is for dividing the control signal after boosting.
Specifically, since the voltage value of the MCU output of touch screen is limited, in the case where driving a fairly large number of situation of mould group, nothing
Method meets partial pressure demand, then can to MCU export voltage value boost, by the boost in voltage for controlling signal to meet partial pressure
Demand, that is, the voltage of the control signal after boosting is greater than the summation of the control signal after partial pressure.Then pass through bleeder circuit pair
Control signal after boosting is divided, to obtain the control signal for driving different driving mould group.
It should be noted that in the above-described embodiments, controller, booster circuit, bleeder circuit and driving mould group are incorporated into
In one dedicated chip, but it is not limited only to this, controller, booster circuit, bleeder circuit and driving mould group can encapsulate respectively
At individual chip, and the use that links together.
Optionally, booster circuit is connect by translation interface with controller.
Specifically, translation interface respectively with universal serial bus (Universal Serial Bus, referred to as USB) and logical
It is connected with asynchronous receiving-transmitting transmitter (Universal Asynchronous Receiver/Transmitter, referred to as UART).
That is, above-mentioned translation interface, which can be USB, turns UART interface.
Fig. 8 is according to a kind of schematic diagram of optional touch screen of the utility model embodiment, below with reference to Fig. 8 to touch
Screen is capacitance touch screen, and row of channels is described in detail a kind of preferred embodiment of the utility model for being divided into 3 groups.Such as
Shown in Fig. 8, entire touch screen may include: MCU, booster circuit, partial pressure unit, three driving circuits (TX), receive circuit
(RX) and USB, UART, wherein MCU is connect by USB, UART with booster circuit.MCU can be by USB, and UART is (i.e. above-mentioned
Translation interface) driving signal is exported to booster circuit, boosted by booster circuit to driving signal, further passed through
Partial pressure unit is divided, and three driving signals are obtained, and voltage is respectively VD1, VD2 and VD3, and three driving signals export respectively
To three driving circuits (TX), the boat channel in each row of channels grouping is successively driven by three driving circuits (TX), and is passed through
The capacitance that circuit (RX) detects all column channels simultaneously is received, MCU is obtained in real time receives the capacitance that circuit (RX) is detected,
And determine whether user carries out touch operation according to capacitance, when determining that user carries out touch operation, further determine that user
Touch location.
Through the above scheme, in the base of identical driving IC (integrated circuit, full name are Integrated Circuit) scheme
On plinth, it can be driven in such a way that partial pressure+subregion+timesharing combines, which has the advantages that shortening scanning
Period promotes scanning speed；It is significant to put into inexpensive performance boost, cost performance height；Caused by touch screen row of channels quantity increase
Performance influences minimum；Narrow bandwidth is easy to avoid the working frequency interference of touch screen driving.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of touch screen, comprising: multiple first passages and multiple second channels, the multiple first passage and the multiple the
Two channels intersect, which is characterized in that the touch screen further include:
Drive control circuit, the drive control circuit are provided with multiple driving pins, and the driving pin is logical with described first
Road connects one to one；The driving pin is for exporting the channel driving signals driven to the first passage, at least
Voltage value between two channel driving signals is different；
Circuit is received, the reception circuit is connect with the second channel, for detecting the signal parameter of the second channel；
Processor, the processor and the reception circuit connection, for handling the signal parameter.
2. touch screen according to claim 1, which is characterized in that the drive control circuit is provided at least two groups driving
Mould group, the driving mould group include at least two driving pins；It is set to the driving pin output in the same driving mould group
The voltage value of channel driving signals is identical, the voltage value of the channel driving signals of the driving pin output between adjacent driven mould group
It is different.
3. touch screen according to claim 2, which is characterized in that the driving pin being set in the same driving mould group is defeated
The driver' s timing of channel driving signals out is different, the channel driving signals of the driving pin output between adjacent driven mould group
Driver' s timing is identical.
4. touch screen according to claim 3, which is characterized in that the drive control circuit further include:
Controller, the controller are provided with control terminal, and the control terminal is for generating control signal；
Bleeder circuit, the bleeder circuit are provided with partial pressure input terminal and at least two partial pressure output ends, the partial pressure input terminal
It is connect with the control terminal, at least two partial pressure output end connects one to one at least two groups driving mould group, institute
Bleeder circuit is stated for dividing to the control signal, and by the partial pressure output end that the control signal after partial pressure is defeated
Out to the driving mould group.
5. touch screen according to claim 4, which is characterized in that the drive control circuit further include:
Booster circuit, the booster circuit are provided with boosting input terminal and boosting output end, the boosting input terminal and the control
End processed connection, the boosting output end are connect with the partial pressure input terminal, the booster circuit for the control signal into
Row boosting, and exported the control signal after boosting to the bleeder circuit by the boosting output end；The bleeder circuit
For being divided to the control signal after the boosting.
6. touch screen according to claim 5, which is characterized in that the booster circuit passes through translation interface and the control
Device connection.
7. touch screen according to claim 6, which is characterized in that the translation interface respectively with universal serial bus and logical
It is connected with asynchronous receiving-transmitting transmitter.
8. touch screen according to claim 1, which is characterized in that in the case where the touch screen is capacitance touch screen,
The signal parameter is capacitance；In the case where the touch screen is electric resistance touch screen, the signal parameter is voltage value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821354354.6U CN208722164U (en) | 2018-08-21 | 2018-08-21 | Touch screen |
| PCT/CN2018/118230 WO2020037868A1 (en) | 2018-08-21 | 2018-11-29 | Touchscreen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821354354.6U CN208722164U (en) | 2018-08-21 | 2018-08-21 | Touch screen |
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| Publication Number | Publication Date |
|---|---|
| CN208722164U true CN208722164U (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821354354.6U Active CN208722164U (en) | 2018-08-21 | 2018-08-21 | Touch screen |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN208722164U (en) |
| WO (1) | WO2020037868A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108920017A (en) * | 2018-08-21 | 2018-11-30 | 广州视源电子科技股份有限公司 | Touch screen and its driving method and device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5216495B2 (en) * | 2008-09-16 | 2013-06-19 | 株式会社ジャパンディスプレイウェスト | Contact detection device and display device |
| KR20150001487A (en) * | 2013-06-27 | 2015-01-06 | 크루셜텍 (주) | Touch detecting apparatus and method |
| CN103941935B (en) * | 2013-11-14 | 2018-12-11 | 上海中航光电子有限公司 | A kind of capacitance touch screen and its driving method, display device |
| TWI505165B (en) * | 2013-11-15 | 2015-10-21 | Ili Technology Corp | Touch sensor and operating method thereof |
-
2018
- 2018-08-21 CN CN201821354354.6U patent/CN208722164U/en active Active
- 2018-11-29 WO PCT/CN2018/118230 patent/WO2020037868A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108920017A (en) * | 2018-08-21 | 2018-11-30 | 广州视源电子科技股份有限公司 | Touch screen and its driving method and device |
| WO2020037867A1 (en) * | 2018-08-21 | 2020-02-27 | 广州视源电子科技股份有限公司 | Touch screen and driving method and apparatus therefor |
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| Publication number | Publication date |
|---|---|
| WO2020037868A1 (en) | 2020-02-27 |
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