TWI463372B - Electrical apparatus - Google Patents

Description

Electronic device

The present invention relates to an electronic device, and more particularly to a method for setting and dynamically switching an operating frequency of an electronic device.

With the evolution of electronic technology, the touch function is provided on the display panel to allow users to directly touch and control graphics and/or text, which is a major trend of modern consumer letter products. In order to reduce the space occupied by electronic products, the designer proposes a panel that integrates the display panel and the touch panel into a touch display function.

The conventional integrated electronic device changes the frequency used for the touch detection performed when the generated noise is too large, thereby reducing the original used in the touch detection. The noise that may be generated by the electronic device at the working frequency. However, due to the integrated electronic device, the frequency at which the touch detection can be used is closely related to the display frequency used for the display operation. Therefore, the range of adjustment of the frequency used for the touch detection that can be performed by the conventional electronic device is limited, and the scanning frequency can not be effectively reduced to effectively reduce the electrons while taking into consideration the quality of the display operation. The noise generated by the device.

Please refer to FIG. 1 . FIG. 1 is a block diagram of a conventional electronic device 100 . The electronic device 100 includes a system end 110, a processing unit 120, and a panel 130. The processing unit 120 sends a signal TS to scan a plurality of touch detection endpoints on the panel 130, and the processing unit 120 receives the panel 130 according to The signal RS returned by the scanning operation described above is used to know the touch sensing state of the panel 130. Since the scanning or charging time required for the distal touch point FN on the panel 130 is longer than the scanning or charging time required for the near-end touch point NN, the conventional electronic device 100 often utilizes a remote touch. The time of scanning or charging required for the point FN is used as a reference to set the time for scanning or charging of all the touch points on the panel 130.

However, ambient noise (including noise on panel 130 and noise on the ground of the device) is more easily coupled to such conventional electronic device 100 during longer scan or charging time settings. in. Therefore, in order to improve the performance of the electronic device 100, it is an important subject to reduce the amount of such noise.

The invention provides an electronic device and a method for setting the working frequency thereof, and dynamically adjusts the working frequency according to the generation state of the noise.

The present invention provides an electronic device having a panel, the panel is an in-cell touch panel, an out-cell touch panel, and the in-cell touch panel is an in-cell touch panel. The embedded touch panel is an on-cell in-cell touch panel. The electronic device further includes a processing unit, a touch controller, and a display driver. The panel includes a plurality of touch units and a plurality of display units. The processing unit sets the scanning frequency and the display frequency. The touch controller is coupled to the processing unit and the panel. The touch controller receives and detects the touch unit according to the scanning frequency. The display driver is coupled to the controller and the panel, and the display driver receives and displays the panel according to the display frequency. The screen of the display unit is displayed. The touch controller detects the noise value of the touch unit, and the processing unit adjusts the scan frequency or the display frequency according to the noise value.

The invention provides an electronic device comprising a panel, a touch controller and a display driver. The panel includes a plurality of touch units and a plurality of display units. The touch controller is configured with a scanning frequency, and the touch controller is coupled to the panel, and the touch controller receives and detects the touch unit according to the scanning frequency. The display driver is set to display frequency, the display driver is coupled to the contact controller and the panel. The display driver receives and causes the panel to display the screen of the display unit according to the display frequency. The touch controller detects the noise value of the touch unit, and the touch controller adjusts the scan frequency or the display frequency according to the noise value.

The invention also provides a method for setting an operating frequency of an electronic device, comprising: first, setting one of a scanning frequency and a display frequency to a set frequency, and generating another one of a scanning frequency and a display frequency according to the set frequency; and then detecting The noise detection value of the electronic device changes the set frequency according to the noise detection value, and then changes the scanning frequency or the display frequency of the non-set frequency according to the set frequency.

Based on the above, the present invention dynamically adjusts the scanning frequency and display frequency of the electronic device by performing real-time detection on the noise of the electronic device and then using the detected noise detection value. In this way, the scanning frequency and display frequency of the electronic device can be adjusted to a preferred frequency, so that the electronic device can work under the condition of strong display quality and noise reduction to achieve optimal performance.

In order to make the above features and advantages of the present invention more obvious, the following The embodiments are described in detail with reference to the accompanying drawings.

Please refer to FIG. 2A first. FIG. 2A is a schematic diagram of an electronic device 200 according to an embodiment of the invention. The electronic device 200 includes a processing unit 210, a touch controller 220, a memory 250, and a display driver 231 and a panel 232 disposed in the display module 230. The panel 232 integrates a plurality of touch detection units for detecting touch actions and a display panel for displaying images. In order not to interfere with the displayed picture, the touch detection unit can be formed by using a transparent conductive film made of light-transmissive Indium Tin Oxide (ITO). The panel 232 includes a plurality of touch units and a plurality of display units.

The processing unit 210 is coupled to the touch controller 220 and the display driver 232. The processing unit 210 sets the scan frequency TCF and the display frequency DSF, respectively, and transmits the set scan frequency TCF and the display frequency DSF to the touch controller 220 and the display driver 231. The touch controller 220 receives the scan frequency TCF and causes the panel 231 to perform the touch action detection according to the received scan frequency TCF. The display driver 232 receives and drives the panel 231 to display a screen according to the display frequency DSF and performs a touch scan operation on the panel 231. Specifically, the display driver 232 generates the scan signal SS according to the scan frequency DSF, and the touch controller 220 detects the touch action on the panel 231 according to the scan frequency TCF. The scan signal SS generated by the display driver 232 is used to perform a touch scan operation on the panel 231. Display driver 232 and generate, for example The column scan line signal RSCAN is used to drive the panel 231 to perform a screen display function. Incidentally, the display driver 232 and the touch controller 220 can still communicate with each other through the mutual transmission signal COS. That is, the display driver 232 can notify the display driver 232 of the scanning frequency TCF by the signal COS. .

It is worth mentioning that there is a certain relationship between the above-mentioned column scan line signals RSCAN and the scan signal SS, and cannot be independently set. For example, the scanning and detecting operation of the scanning signal SS on the touch panel 231 cannot overlap with the display point of any one of the column scanning line signals RSCAN enabling panel 231 for image display. In other words, the scanning signal SS performs a touch action on the panel 231 to be inserted in the time when all the display columns are turned off. In other words, when the display frequency DSF on which the column scan line signal RSCAN is generated is changed, the scan frequency TCF on which the scan signal SS is generated must also be changed correspondingly, and vice versa.

Under the above limitation, in the embodiment of the present invention, the processing unit 210 first sets the scanning frequency TCF and the display frequency DSF for the associated electronic device 200. When the processing unit 210 sets the scanning frequency TCF and the display frequency DSF, the scanning frequency TCF may be set first, and then the display frequency DSF may be correspondingly set according to the relationship between the scanning frequency TCF and the display frequency DSF. Of course, the processing unit 210 may first set the display frequency DSF, and then set the scan frequency TCF according to the relationship between the scan frequency TCF and the display frequency DSF. That is, the processing unit 210 can set one of the scanning frequency TCF and the display frequency DSF to be equal to the set frequency, and then according to the setting. The frequency is used to generate another of the corresponding scan frequency TCF and display frequency DSF.

That is to say, if the processing unit 210 is first set for the scanning frequency TCF, the processing unit 210 further sets the display frequency DSF according to the corresponding relationship between the scanning frequency TCF and the display frequency DSF according to the set scanning frequency TCF. In contrast, if the processing unit 210 is configured first, the processing unit 210 further sets the scanning frequency TCF according to the correspondence between the scanning frequency TCF and the display frequency DSF according to the display frequency DSF set.

The memory 250 is coupled to the processing unit 210, and the memory 250 stores a look-up table. A plurality of candidate scanning frequencies and corresponding plurality of candidate display frequencies are arranged in the comparison table. When the processing unit 210 first sets the scan frequency TCF, the processing unit 210 first selects one of the plurality of candidate scan frequencies in the comparison table to set the scan frequency TCF, and then selects the plurality of candidate display frequencies in the comparison table. The display display frequency corresponding to the scan frequency TCF is set to be the display frequency DSF. Correspondingly, when the processing unit 210 first sets the display frequency DSF, the processing unit 210 first selects one of the plurality of candidate display frequencies in the comparison table to set the display frequency DSF, and then uses the plurality of comparison tables. A candidate display frequency corresponding to the display frequency DSF is found in the candidate display frequency to be set as the scan frequency TCF.

After the setting of the scanning frequency TCF and the display frequency DSF is completed, the touch controller 220 immediately detects the noise value NS generated by the electronic device 100 at the set operating frequency (scanning frequency TCF and display frequency DSF). . The frequency adjustment value FTV can be determined by the processing unit 210 or the touch controller 220 according to the detected noise value NS. As determined by the touch controller 220 When the frequency adjustment value FTV is fixed, the frequency adjustment value FTV must be transmitted to the processing unit 210 to perform the changing operation of the scanning frequency TCF and the display frequency DSF through the processing unit 210. Specifically, the processing unit 210 or the touch controller 220 compares the noise detection value obtained according to the detected noise value NS with the noise threshold, and the noise detection value is greater than or When not less than the noise threshold, a frequency adjustment value FTV indicating that the scanning frequency TCF and the display frequency DSF need to be changed is generated. In contrast, if the noise detection value is not greater than or less than the noise threshold, the processing unit 210 or the touch controller 220 does not need to change the frequency adjustment value FTV for the scanning frequency TCF and the display frequency DSF.

When receiving the frequency adjustment value FTV indicating that the scanning frequency TCF and the display frequency DSF need to be changed, the processing unit 210 changes the scanning frequency TCF or the display frequency DSF set to the set frequency, and then uses the foregoing The relationship between the scan frequency TCF and the display frequency DSF is proposed, and the scan frequency TCF and the display frequency DSF are changed according to one of the updated scan frequency TCF and the display frequency DSF.

The processing unit 210 transmits the updated scan frequency TCF and the display frequency DSF to the touch controller 220 and the display driver 232 respectively to operate the newly changed operating frequency (scan frequency TCF and display frequency DSF) of the electronic device 200. .

Please note that the processing unit 210 can change the set frequency by adding or subtracting a preset adjustment frequency value to the original frequency of the set frequency (scan frequency TCF or display frequency DSF), or The processing unit 210 may also change the set frequency by multiplying or dividing the original frequency of the set frequency by a preset magnification. In order to prevent the frequency value of the set frequency from being excessively different from the frequency value set first, the processing unit 210 can change the set frequency within a certain frequency range. That is to say, when the set frequency is changed by adding the adjustment frequency value, after the rate of the set frequency is changed a plurality of times, the set frequency may exceed the upper limit of the frequency range. In this case, the adjustment frequency may be used instead. The value is used to change the set frequency. Conversely, when the set frequency is lower than the lower limit of the frequency range, the adjusted frequency value can be used instead to change the set frequency. It is worth mentioning that the adjustment of the frequency value can be made by the designer according to the actual state, the emphasis is that the noise can be effectively reduced with the least number of frequency adjustments.

When the processing unit 210 adjusts the scan frequency TCF, the processing unit 210 only needs to select the scan frequency to be adjusted according to the above description from the plurality of candidate scan frequencies in the memory 250 to scan the frequency TCF. The adjustment may be performed, and the display frequency corresponding to the adjusted scanning frequency TCF may be found to adjust the display frequency DSF.

The scanning frequency is selected according to the comparison table to select one of the candidate display frequencies corresponding to the scanning frequency to set the display frequency.

Referring to FIG. 2B, FIG. 2B is a schematic diagram of an electronic device 200 according to another embodiment of the present invention. Unlike the previous embodiment, the electronic device 200 does not require the processing unit 210 to assist in setting and adjusting the scanning frequency and display frequency. In the embodiment, the setting and adjustment operations of the scanning frequency and the display frequency can be performed by the touch controller 220. That is to say, in the foregoing embodiment, the setting and adjustment operations on the scanning frequency and the display frequency performed by the processing unit 210 are performed by the touch controller 220 in this embodiment. The touch controller 220 can transmit the scan frequency and the display frequency to the display driver 232 through the transmission mode of the signal COS. In addition, the memory 250 is coupled to the touch controller 220, and the memory 250 is used to provide a basis for setting and adjusting the scanning frequency or display frequency as the touch controller 220.

Referring to FIG. 3, FIG. 3 illustrates a method for setting an operating frequency of an electronic device according to an embodiment of the present invention. The steps include: firstly setting one of the scanning frequency and the display frequency as the set frequency, and generating another scan frequency and display frequency according to the set frequency (S310); and then detecting the noise detection value of the electronic device And changing the set frequency according to the noise detection value, and changing the scanning frequency of the non-set frequency or the display frequency according to the set frequency (S320).

In order to more clearly explain the setting method of the operating frequency of the electronic device of the embodiment of the present invention, a practical example will be described below.

Referring to FIG. 4A, FIG. 4A is a flowchart showing an implementation of a method for setting an operating frequency of an electronic device. In the present embodiment, the processing unit sets the scanning frequency to the set frequency (S410), and generates the display frequency in accordance with the scanning frequency (S430). The scan frequency set in step S410 is provided to the touch controller so that the touch controller can know the value of the scan frequency (S420). In addition, the processing unit sends a command to the display driver (S440), thereby completing the frame rate for changing the display action. In addition, the touch controller detects the noise of the electronic device to obtain the detected noise value (S460), and Compare the detected noise value with the size of the noise threshold (S470). In this embodiment, when the detected noise value is greater than the noise threshold, the processing unit correspondingly changes the scanning frequency (S490), and re-informs the scanning controller that the touch controller has been changed. Conversely, if the detected noise value is not greater than the noise threshold, the touch controller performs an action of reporting the touch result (S480).

Incidentally, when the step S490 is executed, the processing unit changes the display frequency correspondingly.

Please refer to FIG. 4B and FIG. 4C. FIG. 4B and FIG. 4C are diagrams showing setting waveforms of the operating frequency of the electronic device. In the illustration of FIG. 4B, the vertical synchronizing signal VSYNC1 and the horizontal synchronizing signal HSYNC1 are used to set the display scanning action performed on the panel, and include a plurality of column periods OLP1 in one frame period OFP1. When the horizontal synchronization signal HSYNC1 is equal to the blank display period DBP1 of the low level voltage, the panel can perform the touch scanning operation according to the scan signal SS1.

Further, in the illustration of FIG. 4C, when the scanning frequency is changed, the display frequency correspondence is changed. In the present embodiment, the frequency SF2 of the changed aiming signal SS2 is increased (the period SF1 of the scanning signal SS1 is longer than the period SF2 of the scanning signal SS2). Therefore, the frequency of the changed vertical synchronizing signal VSYNC2 and the horizontal synchronizing signal HSYNC2 is increased, and the relative changed frame period OFP2 and column period OLP2 are also shortened correspondingly.

Referring to FIG. 5A, FIG. 5A is a cross-sectional view showing an embodiment of a panel 500 according to an embodiment of the present invention. The panel 500 has an upper base layer 512, a lower base layer 514, and a liquid crystal layer 516. In the present embodiment, the upper substrate layer 512 may be a color filter substrate having a color filter layer 512a. The lower substrate layer 514 may be a thin film transistor array substrate layer having a thin film transistor array 514a. The liquid crystal layer 516 is disposed between the upper base layer 512 and the lower base layer 514 in a sandwich configuration. The panel 500 also includes a capacitive touch sensing layer 518. The capacitive touch sensing layer 518 has a first conductive layer 518a (eg, comprised of indium tin oxide) having an electrode disposed on an upper surface of the lower substrate layer 514 for receiving signals thereon. The capacitive touch sensor 518 further has a second conductive layer 518b (for example, composed of indium tin oxide), wherein the second conductive layer 518b has electrodes disposed on the upper surface of the upper substrate layer 512 to transmit signals. And sending a signal to the touch controller and calculating the touch position generated by the user on the panel. The first conductive layer 518a is disposed on the thin film transistor array 514a.

Please refer to FIG. 5B. FIG. 5B is a cross-sectional view showing another embodiment of the panel 500 according to the embodiment of the present invention. The first conductive layer 518a and the thin film transistor array 514a are integrated with each other, and a gate scan line on the thin film transistor array 514a is used as an electrode.

5C and 5D, FIG. 5C and FIG. 5D are cross-sectional views showing various embodiments of the panel 500 according to the embodiment of the present invention. In the illustration of FIG. 5C, a first conductive layer 518a may be formed on a lower surface of the upper substrate layer 512. Alternatively, as shown in FIG. 5D, the first conductive layer 518a and the second conductive layer 518b are formed on the same level to form a single-layer capacitive touch sensing layer 518. And the single-layer capacitive touch sensing layer 518 is formed on the upper surface of the upper substrate layer 512. Incidentally, a single-layer capacitive touch sensing layer 518 may also be formed on the lower surface of the upper substrate layer 512. On (not shown).

In summary, the present invention changes one of the scanning frequency and the display frequency according to the state of the noise generated by the electronic device, and correspondingly changes the scanning frequency and the display frequency. In this way, the scanning frequency and the display frequency of the electronic device can be dynamically and simply adjusted, and the electronic device can effectively reduce the generation of noise while maintaining the display quality.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100, 200‧‧‧ electronic devices

110‧‧‧System side

120, 210‧‧‧ processing unit

130, 231, 500‧‧‧ panels

220‧‧‧ touch controller

230‧‧‧ display module

232‧‧‧ display driver

211‧‧‧ Touch scan frequency adjustment table

212‧‧‧Display frequency comparison table

FN‧‧‧Remote touch point

NN‧‧‧ near touch point

TCF‧‧‧ scan frequency

SS, SS1, SS2‧‧‧ scan signals

DSF‧‧‧ display frequency

RSCAN‧‧‧ column scan line signal

NS‧‧‧ noise

FTV‧‧‧frequency adjustment value

COS‧‧‧ signal

S310~S320, S410~S480‧‧‧ working frequency setting steps

VSYNC1, VSYNC2‧‧‧ vertical sync signal

HSYNC1, HSYNC2‧‧‧ horizontal sync signal

DBP1‧‧‧ blank display period

OFP1, OFP2‧‧‧ frame cycle

OLP1, OLP2‧‧‧ column cycle

SF1, SF2‧‧ cycle

512‧‧‧Upper basal layer

514‧‧‧ lower basal layer

516‧‧‧Liquid layer

518a, 518b‧‧‧ conductive layer

514a‧‧‧Thin-film array

FIG. 1 is a block diagram of a conventional electronic device 100.

FIG. 2A is a schematic diagram of an electronic device 200 according to an embodiment of the invention.

FIG. 2B is a schematic diagram of an electronic device 200 according to another embodiment of the present invention.

FIG. 3 illustrates a method of setting an operating frequency of an electronic device according to an embodiment of the present invention.

FIG. 4A is a flow chart showing an implementation of a method for setting an operating frequency of an electronic device.

4B and 4C are diagrams showing setting waveforms of the operating frequency of the electronic device.

5A-5D are cross-sectional views showing an embodiment of a panel 500 according to an embodiment of the present invention.

200‧‧‧Electronic devices

210‧‧‧Processing unit

220‧‧‧ touch controller

230‧‧‧ display module

232‧‧‧ display driver

231‧‧‧ panel

TCF‧‧‧ scan frequency

SS‧‧‧ scan signal

DSF‧‧‧ display frequency

RSCAN‧‧‧ column scan line signal

NS‧‧‧ noise

FTV‧‧‧frequency adjustment value

COS‧‧‧ signal

Claims (36)

An electronic device includes: a panel comprising a plurality of touch units and a plurality of display units; a processing unit configured to set a scan frequency and a display frequency; a touch controller coupled to the processing unit and the panel Receiving, according to the scanning frequency, the panel to detect the touch unit; and a display driver coupled to the processing unit and the panel, the display driver receiving and according to the display frequency The panel performs a screen display of the display unit, wherein when the touch controller and the display driver operate at the scanning frequency and the display frequency, the touch controller detects a noise value of the touch unit The processing unit adjusts the scanning frequency or the display frequency according to the noise value. The electronic device of claim 1, wherein the processing unit sets the scanning frequency, and the processing unit generates the display frequency according to the set scanning frequency. The electronic device of claim 1, wherein the processing unit sets the display frequency, and the processing unit generates the scanning frequency according to the set display frequency. The electronic device of claim 1, wherein the processing unit adjusts the scanning frequency according to the noise value, and adjusts the display frequency according to the adjusted scanning frequency. An electronic device as claimed in claim 1, wherein the electronic device The control unit adjusts the display frequency according to the noise value, and generates the scan frequency according to the adjusted display frequency. In the electronic device of claim 1, the processing unit generates a frequency adjustment value according to the noise value, and the processing unit adjusts the scanning frequency or the display frequency according to the frequency adjustment value. The electronic device of claim 6, wherein the touch controller generates the frequency adjustment value according to comparing a noise threshold and the noise value. The electronic device of claim 1, further comprising: a memory coupled to the processing unit, wherein the memory stores a comparison table, wherein the comparison table is arranged with a plurality of candidate scanning frequencies and corresponding a plurality of candidate display frequencies, the processing unit selects one of the candidate scan frequencies to set the scan frequency, and selects one of the candidate display frequencies corresponding to the scan frequency according to the comparison table. Set the display frequency. The electronic device of claim 1, further comprising: a memory coupled to the processing unit, wherein the memory stores a comparison table, wherein the comparison table is arranged with a plurality of candidate display frequencies and corresponding a plurality of candidate scanning frequencies, the processing unit selects one of the to-be-selected display frequencies to set the display frequency, and select one of the candidate display frequencies corresponding to the display frequency according to the comparison table to set The scanning frequency. The electronic device of claim 4, further comprising: a memory coupled to the processing unit, wherein the memory stores a comparison table, wherein the comparison table is arranged with a plurality of candidate scanning frequencies and corresponding a plurality of candidate display frequencies, the processing unit selects one of the candidate scanning frequencies according to the noise value to adjust the scanning frequency, and sets the display frequency according to the comparison table and the adjusted scanning frequency . The electronic device of claim 5, further comprising: a memory coupled to the processing unit, the memory storing a comparison table, the comparison table is arranged with a plurality of candidate scanning frequencies and corresponding a plurality of candidate display frequencies, the processing unit selects one of the candidate scanning frequencies according to the noise value to adjust the display frequency, and sets the scanning frequency according to the comparison table and the adjusted display frequency . The electronic device of claim 1, wherein the touch unit is embedded in the display unit. The electronic device of claim 12, wherein the display unit comprises: a color filter layer; a thin film transistor array layer, wherein the touch unit comprises a first conductive layer, wherein the first The conductive layer is coupled between the color filter layer and the thin film transistor array layer, the first conductive layer is coupled to the touch controller, and the touch controller receives and transmits the first conductive layer according to the scan frequency. Perform detection of the touch unit. The electronic device of claim 12, wherein the display unit comprises a color filter layer, the touch unit comprises a first conductive layer, wherein the first conductive layer is coupled to the color filter layer, The first conductive layer is coupled to the touch controller, and receives and according to the scanning frequency, the first conductive layer performs detection of the touch unit. An electronic device includes: a panel including a plurality of touch units and a plurality of display units; a touch controller configured to have a scan frequency, the touch controller coupled to the panel, the touch controller Receiving and detecting the touch panel according to the scanning frequency; and displaying a display with a display frequency, the display driver is coupled to the touch controller and the panel, and receiving and according to the display frequency The touch panel is configured to perform a screen display of the display unit. When the touch controller and the display driver operate at the scan frequency and the display frequency, the touch controller detects a miscellaneous touch unit. The touch controller adjusts the scan frequency or the display frequency according to the noise value. The electronic device of claim 15, wherein the touch controller sets the scanning frequency and generates the display frequency according to the scanning frequency set by the touch controller. The electronic device of claim 15, wherein the display driver sets the display frequency and generates the scanning frequency according to the display frequency set by the display driver. The electronic device of claim 15, wherein the electronic device The touch controller adjusts the scanning frequency according to the noise value, and adjusts the display frequency according to the adjusted scanning frequency. The electronic device of claim 15, wherein the touch controller adjusts the display frequency according to the noise value, and generates the scan frequency according to the adjusted display frequency. The electronic device of claim 15 , wherein the touch controller generates a frequency adjustment value according to the noise value, and the touch controller adjusts the scan frequency or the display frequency according to the frequency adjustment value. . The electronic device of claim 20, wherein the touch controller generates a frequency adjustment value according to comparing a noise threshold and the noise value. The electronic device of claim 15, further comprising: a memory coupled to the touch controller, wherein the memory stores a comparison table, wherein the comparison table is arranged with a plurality of candidate scanning frequencies and phases Corresponding a plurality of candidate display frequencies, the touch controller selects one of the candidate scan frequencies to set the scan frequency, and selects the candidate display frequencies corresponding to the scan frequencies according to the comparison table. One of them is to set the display frequency. The electronic device of claim 15, further comprising: a memory coupled to the display driver, wherein the memory stores a comparison table, wherein the comparison table is arranged with a plurality of candidate display frequencies and corresponding a plurality of candidate scanning frequencies, the touch controller selects the candidate display frequencies One of the rates is used to set the display frequency, and one of the candidate display frequencies corresponding to the display frequency is selected according to the comparison table to set the scan frequency. The electronic device of claim 18, further comprising: a memory coupled to the touch controller, wherein the memory stores a comparison table, wherein the comparison table is arranged with a plurality of candidate scanning frequencies and phases Corresponding multiple display display frequencies, the touch controller selects one of the candidate scan frequencies according to the noise value to adjust the scan frequency, and according to the comparison table and the adjusted scan frequency Set the display frequency. The electronic device of claim 17, further comprising: a memory coupled to the display driver, the memory storing a comparison table, the comparison table is arranged with a plurality of candidate scanning frequencies and corresponding a plurality of candidate display frequencies, the touch controller selects one of the candidate scan frequencies according to the noise value to adjust the display frequency, and sets the display according to the comparison table and the adjusted display frequency. scanning frequency. The electronic device of claim 15, wherein the touch unit is embedded in the display unit. The electronic device of claim 26, wherein the display unit comprises: a color filter layer; a thin film transistor array layer, wherein the touch unit comprises a first conductive layer, wherein the One The conductive layer is coupled between the color filter layer and the thin film transistor array layer. The first conductive layer is coupled to the touch controller, and receives and transmits the touch unit through the first conductive layer according to the scan frequency. Detection. The electronic device of claim 26, wherein the display unit comprises a color filter layer, the touch unit comprises a first conductive layer, wherein the first conductive layer is coupled to the color filter layer, The first conductive layer is coupled to the touch controller, and receives and according to the scanning frequency, the first conductive layer performs detection of the touch unit. A method for setting an operating frequency of an electronic device, comprising: setting one of a scanning frequency and a display frequency to be a set frequency, and generating another one of the scanning frequency and the display frequency according to the set frequency; and detecting the a noise detection value of the electronic device, and adjusting the set frequency and one of the display frequencies according to the noise detection value as the set frequency, and adjusting the scan frequency not the set frequency and the display frequency another. The method for setting the working frequency as described in claim 29, wherein the scanning frequency is used to provide detection of the touch action by the panel, and the display frequency is used to provide an action of displaying the panel on the screen. The method for setting the working frequency as described in claim 29, wherein the step of: detecting the noise detection value of the electronic device and changing the set frequency according to the noise detection value includes: Comparing a noise threshold and the noise detection value to change the set frequency of the set frequency. The method for setting the working frequency as described in claim 30, wherein the step of “changing the set frequency according to comparing the noise threshold and the noise detection value” comprises: when the noise detection value is not less than Or when the noise threshold is greater than, the size of the set frequency is changed. The method for setting an operating frequency according to claim 29, wherein the step of "changing the set frequency set" is performed by adding or subtracting the original frequency of the set frequency to the adjusted frequency value Set the frequency change. The method for setting the working frequency as described in claim 29, further comprising: providing a frequency adjustment reference table, wherein the frequency adjustment comparison table records a plurality of operable scanning frequencies by selecting the operable scanning frequencies. One of the settings is to set the set frequency, and the set frequency is changed by selecting another of the operable scan frequencies. The method for setting the working frequency as described in claim 29, further comprising: providing a frequency adjustment reference table, wherein the frequency adjustment comparison table records a plurality of operable display frequencies to provide selection of the operable display frequencies. One of them sets the set frequency, and provides another one that selects the operable display frequencies to change the set frequency. The method for setting an operating frequency according to claim 29, wherein the step of: generating the scan frequency and the display frequency according to the set frequency further comprises: Providing a frequency comparison table, wherein the touch detection and display frequency comparison table records a correspondence between a plurality of operable display frequencies and a plurality of operable scanning frequencies; and transmitting the frequency comparison table according to the scanning frequency for the set frequency The display frequency is found, or the frequency is compared according to the display frequency of the set frequency to find the scan frequency.