CN107025018B - Touch controller applied to touch panel and dehumidification method - Google Patents
Touch controller applied to touch panel and dehumidification method Download PDFInfo
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- CN107025018B CN107025018B CN201611195913.9A CN201611195913A CN107025018B CN 107025018 B CN107025018 B CN 107025018B CN 201611195913 A CN201611195913 A CN 201611195913A CN 107025018 B CN107025018 B CN 107025018B
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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- Air Conditioning Control Device (AREA)
- Drying Of Solid Materials (AREA)
- Drying Of Gases (AREA)
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Abstract
The invention provides a touch controller applied to a touch panel and a dehumidification method. The touch panel comprises a plurality of transmission electrodes, each transmission electrode comprises a first end and a second end, the first end and the second end are respectively and electrically coupled with the switch unit, and the dehumidification method comprises the following steps: the sensor processing unit judges whether the dehumidification condition is met or not according to the received signal; if so, enabling the power management unit to generate a first voltage value and a second voltage value; the first end of the transmission electrode is electrically coupled with the first voltage value and the second end of the transmission electrode is electrically coupled with the second voltage value through the switch unit. The invention can reduce the moisture or humidity of the touch panel.
Description
Technical Field
The present invention provides a touch controller and a dehumidification method, and more particularly, to a touch controller and a dehumidification method applied to a touch panel.
Background
In manufacturing a touch display device, a touch panel, a glass layer, a display panel, etc. are usually bonded to each other by using a bonding material, such as an Optical Clear adhesive (OCR) or an Optical Clear Adhesive (OCA). However, the adhesive material is easy to absorb moisture, and once the adhesive material absorbs too much moisture, the touch display device is easy to operate in an environment with too high humidity, which may not only cause electrical change of the electronic device, but also cause fogging of the touch display device, and reduce the viewing comfort of the user.
Disclosure of Invention
In order to solve the above problems, an embodiment of a dehumidification method applied to a touch panel is provided, in which the touch panel is electrically coupled to a touch controller, and the touch controller includes a sensor processing unit, a power management unit, and a switch unit. The touch panel comprises a plurality of transmission electrodes, each transmission electrode comprises a first end and a second end, the first end and the second end are respectively electrically coupled with the switch unit, the switch unit is electrically coupled with the sensor processing unit and the power management unit, and the dehumidification method comprises the following steps: the sensor processing unit judges whether the dehumidification condition is met or not according to the received signal; if so, enabling the power management unit to generate a first voltage value and a second voltage value, wherein the first voltage value is different from the second voltage value; the first end of the transmission electrode is electrically coupled with the first voltage value through the switch unit, and the second end of the transmission electrode is electrically coupled with the second voltage value.
The invention also provides a touch controller applied to the touch panel, which comprises an inductor processing unit, a power management unit and a switch unit. The sensor processing unit is used for receiving a plurality of humidity sensing signals and a plurality of touch sensing signals and judging whether a dehumidification condition is met or not according to the humidity sensing signals and the touch sensing signals. The power management unit is electrically coupled to the sensor processing unit and determines whether to generate a first voltage value and a second voltage value according to the determination result of the sensor processing unit. The switch unit is electrically coupled to the power management unit, and the switch unit is used for electrically coupling the first end of the transmission electrode with a first voltage value and electrically coupling the second end of the transmission electrode with a second voltage value.
The touch controller and the dehumidification method of the invention use the device of the touch panel to generate heat so as to achieve the purpose of dehumidification, do not need to add additional devices, can achieve the purpose of dehumidification in a convenient way, and improve the commercial value.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic diagram of a touch system according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a touch controller according to an embodiment of the invention.
FIG. 3A is a schematic diagram of an embodiment of the steps of the dehumidification method of the present invention.
FIG. 3B is a schematic diagram of an embodiment of the dehumidification method 307 of the present invention。
[ List of reference numerals ]
10 touch system
11 touch panel
111 touch control area
112 wiring area
113 transfer electrode
1131 sub-transmitting electrode
114 receiving electrode
1141 sub-receiving electrode
115 ground wire
12 touch controller
121 switch unit
122 power management unit
123 inductor processing unit
124 communication unit
13 external power supply
14 humidity sensor
15 external system
TX1First end
TX2Second end
RX1First end
RX2Second end
GND1First end
GND2Second end
301. 302, 303, 305, 307, 309, 311, 3071, 3073, 3075 and 3077
Detailed Description
Referring to fig. 1, fig. 1 shows a touch system 10 according to an embodiment of the present invention, which includes a touch panel 11 and a touch controller 12, the touch panel 11 is operable in a touch mode and a dehumidification mode, when the touch panel 11 is operated in the touch mode, the touch panel 11 is used for sensing whether a touch event occurs, and when the touch panel 11 is operated in the dehumidification mode, the touch panel 11 uses internal devices to generate heat to remove moisture. The touch controller 12 is electrically coupled to an external power source 13, a humidity sensor 14, and an external system 15, wherein the external power source 13 may be an ac power source or a dc power source, and the external system 15 is, for example, a control system of a notebook computer or a display screen. The touch panel 11 can be divided into a touch area 111 and a routing area 112, the touch area 111 is configured with a plurality of transmitting electrodes 113 and receiving electrodes 114, when the touch panel 11 is operated in the touch mode, the plurality of transmitting electrodes 113 and receiving electrodes 114 are used for sensing whether a touch event occurs, for example: whether there is an indicator (e.g., a user's finger or a stylus) touching the touch panel11, a touch area 111. The transmitting electrodes 113 are horizontally arranged in a first direction, the receiving electrodes 114 are horizontally arranged in a second direction, and the transmitting electrodes 113 and the receiving electrodes 114 are orthogonal to each other, but not limited thereto. Each of the transmitting electrodes 113 has a first terminal TX1And a second terminal TX2Each receiving electrode 114 has a first terminal RX1And a second terminal RX2First terminal TX of transfer electrode 1131And a second terminal TX2A first terminal RX of a receiving electrode 114 electrically coupled to the touch controller 12 through the wiring region 1121And a second terminal RX2The wiring area 112 is electrically coupled to the touch controller 12, wherein each transmitting electrode 113 includes a plurality of sub-transmitting electrodes 1131 electrically coupled to each other, and each receiving electrode 114 includes a plurality of sub-receiving electrodes 1141 electrically coupled to each other. The wiring area 112 further includes a ground line 115, the ground line 115 is disposed around the transmitting electrode 113 and the receiving electrode 114, when the touch panel 11 operates in the touch mode, the ground line 115 is used to reduce Electrostatic Discharge (ESD) of the touch panel 11, and the ground line 115 has a first end GND1And a second terminal GND2First end GND of ground line 1151And a second terminal GND2Is electrically coupled to the touch controller 12.
Referring to fig. 2, fig. 2 is a schematic diagram of the touch controller 12 according to the above embodiment. The touch controller 12 includes a switch unit 121, a power management unit 122, a sensor processing unit 123, and a communication unit 124. The switch unit 121 is electrically coupled to the power management unit 122 and the sensor processing unit 123, and the switch unit 121 is further coupled to the first terminal TX of the transmitting electrode 1131And a second terminal TX2First terminal RX of receiving electrode 1141And a second terminal RX2And a first end GND of the ground line 1151And a second terminal GND2And electrically coupling. The switch unit 121 is used for controlling the first terminal TX of the transmission electrode 113 according to the control of the power management unit 1221And a second terminal TX2First terminal RX of receiving electrode 1141And a second terminal RX2Andfirst end GND of ground line 1151And a second terminal GND2The switch unit 121 is, for example, a multiplexer, and is switched between the touch mode and the dehumidification mode. When the display panel 11 operates in the touch mode, the switch unit 121 enables the first terminal TX of the transmitting electrode 1131And a second terminal TX2First terminal RX of receiving electrode 1141And a second terminal RX2Electrically coupled to the sensor processing unit 123, so that the sensor processing unit 123 can transmit and receive the touch sensing signal, the sensor processing unit 123 determines whether a touch event occurs according to the touch sensing signal, and the first end GND of the ground line 1151And a second terminal GND2Then to ground. When the display panel 11 operates in the dehumidification mode, the switching unit 121 makes the first end TX of the transfer electrode 1131And a second terminal TX2First terminal RX of receiving electrode 1141And a second terminal RX2And a first end GND of the ground line 1151And a second terminal GND2The transmitting electrode 113, the receiving electrode 114, or the ground line 115 are electrically coupled to a specific voltage value, respectively, so that the temperature of the transmitting electrode 113, the receiving electrode 114, or the ground line can be raised and heated according to the electrically coupled voltage value, thereby reducing moisture in the touch panel 11.
The power management unit 122 is electrically coupled to the external power source 13, the sensor processing unit 123 and the switch unit 121, the power management unit 122 is configured to receive an external voltage value input by the external power source 13, the power management unit 122 receives a determination result output by the sensor processing unit 123, and the power management unit 122 is configured to determine that the touch panel 11 is operated in the touch mode or the dehumidification mode according to the determination result. The power management unit 122 is further configured to convert the external voltage value into a first voltage value and a second voltage value, where the first voltage value may be a positive voltage value or a negative voltage value, the second voltage value may be ground, and the first voltage value and the second voltage value may be interchanged. The power management unit 122 further provides the first voltage value and the second voltage value to the switch unit 121, so as to provide the first voltage value and the second voltage value to the first terminal TX of the transmitting electrode 113 through the switch unit 1211Or second terminal TX2First terminal RX of receiving electrode 1141Or the second terminal RX2And a first end GND of the ground line 1151Or the second terminal GND2. The positive voltage value and the negative voltage value can be determined according to the size of the touch panel 10 and the trace impedance, and the larger the trace impedance is, the larger the required voltage value is. In addition, when the touch panel 11 operates in the dehumidification mode, the power management unit 122 is further configured to determine whether the transmitting electrode 113, the receiving electrode 114 or the ground line 115 is used for heating, the number of the transmitting electrodes 113 and the receiving electrodes 114 receiving the first voltage value and the second voltage value, and count the time of the touch panel 11 operating in the dehumidification mode.
The sensor processing unit 123 is electrically coupled to the switch unit 121, the power management unit 122, the humidity sensor 14 and the communication unit 124. The sensor processing unit 123 is configured to receive and process the touch sensing signals received and output by the receiving electrode 114, determine whether a variation of the touch sensing signals is greater than or equal to a variation threshold according to the touch sensing signals, and determine whether a touch event occurs according to the variation and the touch sensing signals. Since the variation of the touch sensing signal is increased when the water content of the touch panel 11 is too high, the sensor processing unit 123 can determine whether to perform dehumidification according to the variation. In addition, the sensor processing unit 123 receives a plurality of humidity sensing signals outputted from the humidity sensor 14 in real time, wherein the humidity sensor 14 is, for example, a ceramic humidity sensor, a polymer humidity sensor, etc. When the sensor processing unit 123 determines that the sensed humidity is greater than or equal to the humidity threshold value or the variation of the touch sensing signal is greater than or equal to the variation threshold value according to the humidity sensing signal, the sensor processing unit 123 determines that the humidity of the current touch panel 110 is too high, and the sensor processing unit 123 generates the determination result accordingly and transmits the determination result to the power management unit 122. In addition, if the touch panel 10 is operated in the dehumidification mode and the sensor processing unit 123 determines that the variation of the sensed humidity or the touch sensing signal cannot be reduced successfully, the sensor processing unit 123 enables the communication unit 124 to communicate with the external system 15, so as to perform dehumidification through the mechanism (e.g., activating a fan) of the external system 15 itself.
The dehumidification method of the present invention will be described with reference to fig. 1, fig. 2 and fig. 3A, and fig. 3A is a schematic diagram of an embodiment of the dehumidification method of the present invention. First, in step 301, when the touch panel 11 operates in the touch mode, the sensor processing unit 123 immediately determines whether the current dehumidification condition is met, and when the determination in step 301 is no, it means that the dehumidification is not currently needed, so that the touch panel 11 can continue to operate in the touch mode to normally perform the touch sensing process, i.e., step 302. If the determination in step 301 is yes, it means that the touch panel 11 needs to be dehumidified currently, so step 303 is performed to prepare the touch panel 11 to operate in the dehumidification mode. The dehumidification condition may be that the sensed humidity is greater than or equal to a humidity threshold, or that the variation of the touch sensing signal is greater than or equal to a variation threshold, and in some embodiments, the determination may also be performed through the humidity threshold and the variation threshold, where the humidity threshold and the variation threshold may be adjusted according to the usage environment and the requirement of the display panel 11. Therefore, the sensor processing unit 123 determines whether to perform the step 303 by determining whether the sensed humidity is greater than or equal to the humidity threshold according to the received humidity sensing signals, the sensor processing unit 123 may also determine whether the variation of the received touch sensing signal is greater than or equal to the variation threshold to determine whether to perform the step 303, or the sensor processing unit 123 determines whether to perform the step 303 by determining whether the sensed humidity is greater than or equal to the humidity threshold and the variation of the touch sensing signal is greater than or equal to the variation threshold at the same time.
Since the sensor processing unit 123 generates and transmits the determination result to the power management unit 122 in step 301, in step 303, the power management unit 122 generates the first voltage value and the second voltage value according to the received determination result, and the power management unit 122 selects at least one of the transmitting electrode 113, the receiving electrode 114, and the ground line 115 to be electrically coupled to the first voltage value and the second voltage value. In addition, the power management unit 122 can select the number of the transmitting electrodes 113 and the receiving electrodes 114 electrically coupled to the first voltage value and the second voltage value. E.g. only a single oneThe transmitting electrode 113 and the receiving electrode 114 are electrically coupled to the first voltage value and the second voltage value, or a single row of the transmitting electrodes 113 and the receiving electrodes 114 are electrically coupled to the first voltage value and the second voltage value, but not limited thereto. Next, in step 305, the switch unit 121 electrically couples at least one of the transmitting electrode 113, the receiving electrode 114 and the ground line 115 with the first voltage value and the second voltage value according to the configuration of the power management unit 122. For example, the switching unit 121 transfers the first terminal TX of the transmission electrode 113 according to the configuration of the power management unit 1221Electrically coupled to one of the first voltage value and the second voltage value, and transmitting the second terminal TX of the transmission electrode 1132Is electrically coupled to the other of the first voltage value and the second voltage value. In this embodiment, the transmitting electrode 113 electrically coupled to the first voltage value and the second voltage value generates a flowing current due to a voltage difference between the first voltage value and the second voltage value, and the transmitting electrode 113 increases its temperature due to a current thermal effect, so that the temperature inside the touch panel 11 increases, and the moisture of the touch panel 11 moves to the outside with a relatively low temperature due to the heat of the transmitting electrode 113, thereby reducing the moisture or humidity of the touch panel 11 itself.
After step 305 is completed, in step 307 the sensor processing unit 123 determines whether the dehumidification completion condition is currently met corresponding to step 301. The condition for completing the dehumidification is that the sensed humidity is smaller than the humidity threshold, or the variation of the touch sensing signal is smaller than the variation threshold, and in some embodiments, the determination may also be performed by the humidity threshold and the variation threshold at the same time, where the humidity threshold and the variation threshold may be adjusted according to the usage environment and the requirement of the touch panel 11. Therefore, when the determination in step 307 is yes, that is, the sensed humidity is less than the humidity threshold, or the variation of the touch sensing signal is less than the variation threshold, the water inside the touch panel 11 is reduced through step 305, so that step 309 can be performed, that is, the dehumidification function is ended and the process returns to step 302 to perform the touch sensing process. If the determination in step 307 is no, that is, the moisture inside the touch panel 10 cannot be effectively reduced after step 305 is completed, step 311 is performed, and the communication unit 124 communicates with the external system 15, so that the external system 15 starts an external dehumidification mechanism to perform dehumidification.
In other embodiments, step 307 may further include step 3071, step 3073, step 3075, and step 3077. Referring to fig. 3B, after the step 305 is completed, step 3071 is executed, in step 3071, when the switch unit 121 electrically couples the first voltage value and the second voltage value to the corresponding first terminal and the second terminal, the power management system 122 times and determines whether the execution time has reached an execution time threshold, where the execution time threshold may be set according to a requirement, for example, 30 minutes. If the determination in step 3071 is negative, continue to execute step 3071 until the execution time reaches the execution time threshold; if the determination in step 3071 is yes, then step 3073 is performed. In step 3073, the sensor processing unit 123 determines whether the current state of the touch panel 11 meets the condition of completing the dehumidification as described in step 307, and if so, performs step 309, otherwise, performs step 3075. In step 3075, the power management unit 122 counts, for example, the initial setting value is 2, in step 3075, the power management unit 122 decreases the initial setting value by 1, and determines whether the initial setting value is 0, if not, step 3077 is executed, and after the execution time is reset to 0, 3071 is executed again, that is, the heating and dehumidifying are continued. If the determination in step 3075 is yes, that is, the dehumidification is performed 2 times, and the moisture on the touch panel 11 cannot be successfully reduced, the step 311 is performed to notify the external system 15 to perform the dehumidification.
In summary, the present invention utilizes the touch controller to control the voltage value of the transmitting electrode, the receiving electrode or the ground wire electrically coupled to each other, so that the transmitting electrode, the receiving electrode or the ground wire can generate heat according to the current generated by the voltage difference between the two ends of the transmitting electrode, the receiving electrode or the ground wire, thereby reducing the moisture of the touch panel 11 and achieving the effects of dehumidification and defogging. Therefore, the present invention not only does not need to add extra devices and cost, but also can simply remove the moisture of the water mist compared with the dehumidification and defogging method for baking the touch panel 11, thereby greatly improving the benefit of the touch panel 11 in commercial application.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A dehumidification method applied to a touch panel, wherein the touch panel is electrically coupled to a touch controller, the touch controller comprises a sensor processing unit, a power management unit, and a switch unit, the touch panel comprises a plurality of transmitting electrodes and a plurality of receiving electrodes, each transmitting electrode comprises a first end and a second end, the first ends of the transmitting electrodes and the second ends of the transmitting electrodes are electrically coupled to the switch unit, respectively, each receiving electrode comprises a first end and a second end, the first ends of the receiving electrodes and the second ends of the receiving electrodes are electrically coupled to the switch unit, the switch unit is electrically coupled to the sensor processing unit and the power management unit, a ground wire is disposed on the touch panel and surrounds the transmitting electrodes and the receiving electrodes, the dehumidification method comprises the following steps:
the sensor processing unit judges whether a dehumidification condition is met or not according to a received signal and outputs a judgment result to the power management unit, and the power management unit determines that the touch panel is operated in a touch mode or a dehumidification mode according to the judgment result;
if so, the power management unit determines that the touch panel is operated in the dehumidification mode and generates a first voltage value and a second voltage value, wherein the first voltage value is different from the second voltage value; and
electrically coupling the first terminal of the transfer electrode with the first voltage value and the second terminal of the transfer electrode with the second voltage value through the switching unit,
when the touch panel is operated in a touch mode, the grounding wire is in a grounding voltage;
when the touch panel is operated in a dehumidification mode, the power management unit is further used for determining whether the grounding wire is used for heating; and is
When the grounding wire is determined to be used for heating, a first end of the grounding wire is electrically coupled with the first voltage value through the switch unit, and a second end of the grounding wire is electrically coupled with the second voltage value.
2. The method of claim 1, wherein the sensor processing unit is configured to receive a humidity sensing signal, and the dehumidification condition is that a sensed humidity sensed by the humidity sensing signal is greater than or equal to a humidity threshold.
3. The dehumidification method according to claim 1, wherein the receiving electrode receives and outputs a plurality of touch sensing signals, the touch sensing signals are transmitted to the sensor processing unit, and the dehumidification condition is that a variation of the touch sensing signals is greater than or equal to a variation threshold.
4. The dehumidification method according to claim 3, wherein the step of causing the switching unit to electrically couple the first end of the transfer electrode with the first voltage value and the second end of the transfer electrode with the second voltage value further comprises:
causing the switch unit to electrically couple the first end of the receive electrode to the first voltage value and the second end of the receive electrode to the second voltage value.
5. The dehumidification method according to claim 1, wherein the touch panel further comprises a communication unit electrically coupled to the sensor processing unit, and the method further comprises:
enabling the sensor processing unit to judge whether a condition of finishing dehumidification is met; and
and if not, the communication unit informs an external system to carry out dehumidification.
6. The dehumidification method according to claim 5, wherein the step of causing the sensor processing unit to determine whether the dehumidification completion condition is met further comprises:
enabling the power management unit to judge whether an execution time is larger than or equal to an execution time threshold value; and
and if so, the sensor processing unit judges whether the dehumidification is finished or not according to the received signal.
7. The dehumidification method according to claim 5, wherein the touch panel comprises a plurality of receiving electrodes, each receiving electrode comprises a first end and a second end, the first end of the receiving electrode and the second end of the receiving electrode are electrically coupled to the switch unit respectively, the receiving electrode receives and outputs a plurality of touch sensing signals, the touch sensing signals are transmitted to the sensor processing unit, and the dehumidification completion condition is that a variation of the touch sensing signals is smaller than a variation threshold.
8. The dehumidification method according to claim 5, wherein the sensor processing unit is configured to receive a humidity sensing signal, and the dehumidification completion condition is that a sensed humidity sensed by the humidity sensing signal is less than a humidity threshold.
9. A touch controller applied to a touch panel, the touch controller comprising:
the sensor processing unit is used for receiving a plurality of humidity sensing signals and a plurality of touch sensing signals and judging whether a dehumidification condition is met or not according to the plurality of humidity sensing signals and the plurality of touch sensing signals;
the power management unit is electrically coupled with the sensor processing unit and used for determining that the touch panel operates in a touch mode or a dehumidification mode according to the judgment result of the sensor processing unit so as to determine whether to generate a first voltage value and a second voltage value; and
a switch unit electrically coupled to the power management unit, the switch unit being configured to electrically couple a first terminal of a transmission electrode to the first voltage value and electrically couple a second terminal of the transmission electrode to the second voltage value; and
a ground line electrically coupled to the touch controller,
when the touch panel is operated in a dehumidification mode, the power management unit is further used for determining whether the grounding wire is used for heating; and is
When the ground line is determined to be used for heating, the switch unit electrically couples a first end of the ground line to the first voltage value and electrically couples a second end of the ground line to the second voltage value.
10. The touch controller of claim 9, further comprising:
a communication unit electrically coupled to the sensor processing unit and an external system, the communication unit configured to notify the external system of dehumidification.
11. The touch controller of claim 9, wherein the dehumidification condition is that a sensed humidity of the humidity sensing signals is greater than or equal to a humidity threshold.
12. The touch controller of claim 9, wherein the dehumidification condition is that a variation of the touch sensing signals is greater than or equal to a variation threshold.
13. The touch controller of claim 9, wherein the switch unit is configured to electrically couple a first terminal of a receiving electrode to the first voltage value and a second terminal of the receiving electrode to the second voltage value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105136890 | 2016-11-11 | ||
| TW105136890A TWI592851B (en) | 2016-11-11 | 2016-11-11 | Touch controller and dehumifigying method of touch panel |
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| CN107025018A CN107025018A (en) | 2017-08-08 |
| CN107025018B true CN107025018B (en) | 2020-03-27 |
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| CN201611195913.9A Active CN107025018B (en) | 2016-11-11 | 2016-12-22 | Touch controller applied to touch panel and dehumidification method |
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| TW (1) | TWI592851B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105788453B (en) * | 2016-05-19 | 2020-03-17 | 京东方科技集团股份有限公司 | Display panel, display device and humidity adjusting method for display panel binding area |
| TWI672624B (en) * | 2018-07-02 | 2019-09-21 | 宏碁股份有限公司 | Touch panel with built-in defogging function |
| CN111308736B (en) * | 2020-02-19 | 2021-11-12 | 合肥京东方光电科技有限公司 | Glasses and control method thereof |
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- 2016-11-11 TW TW105136890A patent/TWI592851B/en not_active IP Right Cessation
- 2016-12-22 CN CN201611195913.9A patent/CN107025018B/en active Active
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| CN103176486A (en) * | 2011-12-26 | 2013-06-26 | 联想(北京)有限公司 | Dehumidifying method applied to electronic device and electronic device |
| CN103294243A (en) * | 2012-03-05 | 2013-09-11 | 联想(北京)有限公司 | Method for adjusting environmental parameter of touch sense unit and related device thereof. |
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| TWI592851B (en) | 2017-07-21 |
| TW201818211A (en) | 2018-05-16 |
| CN107025018A (en) | 2017-08-08 |
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