Electronic device and ambient light sensing method thereof

Abstract

The invention provides an electronic device and an ambient light sensing method thereof. The electronic device comprises an ambient light sensor, a signal processor, at least one peripheral circuit and an ambient light sensing signal driving circuit. The ambient light sensor generates an ambient light sensing signal. The signal processor receives an ambient light sensing signal through the signal transmission channel, and generates a digital signal and at least one signal adjustment information according to a signal range of the ambient light sensing signal. The peripheral circuit generates an offset voltage according to the signal adjustment information, so that the offset voltage is coupled to the signal transmission channel through the touch sensing panel to adjust the ambient light sensing signal. The ambient light sensing signal driving circuit provides a sensing driving signal to the ambient light sensor.

Description

Technical Field

[0001] The present invention relates to an electronic device and an ambient light sensing method thereof, and in particular to an electronic device capable of dynamically adjusting an ambient light sensing signal and an ambient light sensing method thereof. Background Art

[0002] In today's electronic devices, in order to improve the performance of electronic devices, it is necessary to detect the ambient light brightness. Due to the characteristics of different ambient light sensors, the value of the ambient light sensing signal generated by them may not fall within the convertible range of the analog-to-digital converter in the subsequent processing action. As a result, when the ambient light sensing signal provided by the ambient light sensor exceeds the convertible range of the analog-to-digital converter, the analog-to-digital converter will not be able to provide correct and effective ambient light brightness information, which will affect the performance of the electronic device. Summary of the invention

[0003] The present invention is directed to an electronic device and an ambient light sensing method thereof, which can make the ambient light sensing signal fall within a convertible signal range.

[0004] According to an embodiment of the present invention, an electronic device includes an ambient light sensor, a signal processor, at least one peripheral circuit, and an ambient light sensing signal driving circuit. The ambient light sensor is coupled to a touch sensing panel to generate an ambient light sensing signal. The signal processor is coupled to the ambient light sensor through a signal transmission channel to receive the ambient light sensing signal, and generates a digital signal and at least one signal adjustment information according to the signal range of the ambient light sensing signal. The peripheral circuit is coupled between the signal processor and the touch sensing panel, and generates an offset voltage according to the signal adjustment information, so that the offset voltage is coupled to the signal transmission channel through the touch sensing panel to adjust the ambient light sensing signal. The ambient light sensing signal driving circuit is coupled to the ambient light sensor to provide an ambient light sensor sensing drive signal.

[0005] According to an embodiment of the present invention, an ambient light sensing method includes: enabling an ambient light sensor to generate an ambient light sensing signal, wherein the ambient light sensor is coupled to a touch sensing panel; enabling a signal processor to receive the ambient light sensing signal through a signal transmission channel; generating a digital signal and at least one signal adjustment information according to a signal range of the ambient light sensing signal; and providing at least one signal adjustment information to at least one peripheral circuit, enabling the at least one peripheral circuit to generate an offset voltage according to the at least one signal adjustment information, and coupling the offset voltage to the signal transmission channel through the touch sensing panel to adjust the ambient light sensing signal.

[0006] Based on the above, the electronic device of the present invention detects whether the ambient light sensing signal generated by the ambient light sensor is within a convertible range of the signal processor through the signal processor, and generates signal adjustment information. The peripheral circuit generates an offset voltage according to the signal adjustment information, so that the offset voltage is coupled to the signal transmission channel that generates the ambient light sensing signal through the touch sensing panel, and the ambient light sensing signal is adjusted so that the ambient light sensing signal falls within the convertible range. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A schematic diagram showing an electronic device according to an embodiment of the present invention;

[0008] Figure 2 A schematic diagram showing an electronic device according to another embodiment of the present invention;

[0009] Figure 3 A schematic diagram showing an electronic device according to an embodiment of the present invention;

[0010] FIG. 4A to FIG. 4C Schematic diagrams showing different implementations of the ambient light sensing action of the present invention;

[0011] Figure 5 A waveform diagram showing an ambient light sensing action according to an embodiment of the present invention;

[0012] Figure 6 A flow chart showing an ambient light sensing method according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0013] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0014] Please refer to Figure 1 , Figure 1 A schematic diagram of an electronic device according to an embodiment of the present invention is shown. The electronic device 100 includes an ambient light sensor ALS, a signal processor 110, and one or more peripheral circuits 120. The ambient light sensor ALS is coupled to the touch sensing panel TP to detect the ambient light brightness and generate an ambient light sensing signal S1 according to the ambient light brightness. The signal processor 110 is coupled to the ambient light sensor ALS through a signal transmission channel STC. The signal processor 110 receives the ambient light sensing signal S1 generated by the ambient light sensor ALS through the signal transmission channel STC. The signal processor 110 also generates a digital signal and signal adjustment information ADJ according to the signal range of the ambient light sensing signal S1.

[0015] In this embodiment, the signal processor 110 can detect the signal size (e.g., the size of the voltage value) of the ambient light sensing signal S1 to determine the signal range of the ambient light sensing signal S1. The signal processor 110 can further determine whether the signal range of the ambient light sensing signal S1 falls within the convertible range of the signal format conversion performed in the signal processor 110. Furthermore, when the signal range of the ambient light sensing signal S1 does not fall within the convertible range of the signal format conversion, the corresponding signal adjustment information ADJ is generated.

[0016] Furthermore, the signal processor 110 may transmit the signal adjustment information ADJ to the peripheral circuit 120. The peripheral circuit 120 may generate the offset voltage VS according to the received signal adjustment information ADJ. The peripheral circuit 120 is coupled to the touch sensing panel TP and provides the offset voltage VS to the touch sensing panel TP.

[0017] It is worth mentioning that Figure 1 The touch sensing panel TP in the figure only depicts part of the transmission wire. Among them, the transmission wire in the touch sensing panel TP may have multiple capacitors CP1~CP4 and resistors RP1~RP3. Each capacitor CP1~CP4 and resistor RP1~RP3 can be electrically coupled with the signal transmission channel STC in series or in parallel. The peripheral circuit 120 is used to transmit the generated offset voltage VS to the touch sensing panel TP. For example, the peripheral circuit 120 provides the offset voltage VS to one end of the resistor RP2, and the offset voltage VS can be coupled to the signal transmission channel STC through the equivalent capacitance formed by the resistor RP2 and the capacitors CP1, CP2, CP3, and CP4, and is used to adjust the signal size of the ambient light sensing signal S1, so that the signal size of the ambient light sensing signal S1 can fall into the convertible range of the signal format conversion performed in the signal processor 110.

[0018] In this embodiment, any one of the capacitors CP1 - CP4 may be a parasitic capacitor or a physical capacitor, and any one of the resistors RP1 - RP3 may be a parasitic resistor or a physical resistor, without any particular limitation.

[0019] In addition, in this embodiment, the signal format conversion performed in the signal processor 110 may be an analog-to-digital conversion operation for converting the ambient light sensing signal S1 in an analog format into a signal in a digital format.

[0020] Please note that in other embodiments, the peripheral circuit 120 may select other paths to feed the offset voltage VS into the touch sensing panel TP, such as one end of the resistor RP1 or RP3. When there are multiple peripheral circuits 120, the multiple peripheral circuits 120 may respectively provide the same or different offset voltages VS to one end of the resistors RP1~RP3.

[0021] Corresponding to different feeding points of the offset voltage VS, the peripheral circuit 120 and the signal transmission channel STC may have different equivalent capacitance values ​​and different signal coupling ratios. The peripheral circuit 120 may set the voltage value of the offset voltage VS according to the signal coupling ratio with the signal transmission channel STC, and thereby control the value of the ambient light sensing signal S1 to be adjusted.

[0022] In the embodiment of the present invention, when the signal range of the ambient light sensing signal S1 is higher than the default convertible range, the peripheral circuit 120 can reduce the ambient light sensing signal S1 by providing an offset voltage VS. Conversely, when the signal range of the ambient light sensing signal S1 is lower than the default convertible range, the peripheral circuit 120 can increase the ambient light sensing signal S1 by providing an offset voltage VS.

[0023] Thus, the ambient light sensing signal S1 generated by the ambient light sensor ALS can stably fall within the convertible range of the signal conversion operation of the signal processor 110. The signal processor 110 can effectively perform the signal conversion operation of the ambient light sensing signal S1 and obtain correct sensing brightness information.

[0024] Please refer to Figure 2 , Figure 2 A schematic diagram of an electronic device according to another embodiment of the present invention is shown. The electronic device 200 includes an ambient light sensing signal driving circuit 230, an ambient light sensor ALS, a signal processor 210, and a plurality of peripheral circuits, namely, a touch signal driver 220-1, a source signal driver 220-2, and a gate voltage controller 220-3. The ambient light sensor ALS is coupled to the touch sensing panel TP to detect the brightness of the ambient light and generate an ambient light sensing signal S1 according to the brightness of the ambient light. The signal processor 210 is coupled to the ambient light sensor ALS through a signal transmission channel STC. The signal processor 210 receives the ambient light sensing signal S1 generated by the ambient light sensor ALS through the signal transmission channel STC. The signal processor 210 also generates signal adjustment information ADJ according to the signal range of the ambient light sensing signal S1. The ambient light sensing signal driving circuit 230 is coupled to the ambient light sensor ALS to provide an ambient light driving signal ALSD to the ambient light sensor ALS, and causes the ambient light sensor ALS to be activated to perform the sensing action of the ambient light.

[0025] In this embodiment, the signal processor 210 includes an analog front-end circuit 211, an analog-to-digital converter (ADC) 212, and a signal adjustment information generator 213. The signal adjustment information generator 213 includes a processor 2131 and an adjustment information generator 2132. The analog front-end circuit 211 is coupled to the signal transmission channel STC to receive the ambient light sensing signal S1 in an analog format, and performs front-end processing on the ambient light sensing signal S1. The analog-to-digital converter (ADC) 212 is coupled to the output end of the analog front-end circuit 211, and performs analog-to-digital conversion on the processed ambient light sensing signal S1, and generates output information OI as a digital signal.

[0026] The processor 2131 is coupled to the output end of the analog-to-digital converter (ADC) 212, receives the output information OI generated by the analog-to-digital converter (ADC) 212, and determines whether the signal range of the ambient light sensing signal S1 is higher or lower than a convertible range of the analog-to-digital action of the analog-to-digital converter (ADC) 212 according to the output information OI. When the signal range of the ambient light sensing signal S1 is higher than the above-mentioned convertible range, the output information OI corresponding to the ambient light sensing signal S1 with a relatively high value will be an invalid value. In addition, when the signal range of the ambient light sensing signal S1 is lower than the above-mentioned convertible range, the output information OI corresponding to the ambient light sensing signal S1 with a relatively low value will be an invalid value. By detecting the invalid value in the output information OI, the processor 2131 can know whether the signal range of the ambient light sensing signal S1 is higher or lower than the above-mentioned convertible range.

[0027] The adjustment information generator 2132 is coupled to the output terminal of the processor 2131, and is used to generate signal adjustment information ADJ1-ADJ3 according to the judgment result of whether the signal range of the ambient light sensing signal S1 generated by the processor 2131 is higher or lower than the above-mentioned convertible range. It is worth noting that in this embodiment, the number of the touch signal driver 220-1, the source signal driver 220-2 and the gate voltage controller 220-3 as the peripheral circuits is 3, and the adjustment information generator 2132 can generate signal adjustment information ADJ1-ADJ3 corresponding to the touch signal driver 220-1, the source signal driver 220-2 and the gate voltage controller 220-3 respectively.

[0028] In the present embodiment, the touch signal driver 220-1 is coupled to the touch signal terminal SX / RX in the touch sensing panel TP, and is coupled to the resistor RP1. The source signal driver 220-2 is coupled to the source terminal SRC in the touch sensing panel TP, and is coupled to the resistor RP2. The gate voltage controller 220-3 is coupled to the gate terminal GATE in the touch sensing panel TP through the gate driver GD, and is coupled to the resistor RP3. Since the touch signal driver 220-1, the source signal driver 220-2, and the gate voltage controller 220-3 are coupled to multiple different terminals of the touch sensing panel TP, the touch signal driver 220-1, the source signal driver 220-2, the gate voltage controller 220-3 and the signal transmission channel STC may have different signal coupling rates.

[0029] Furthermore, the above-mentioned multiple signal coupling ratios can be measured and pre-stored in the adjustment information generator 2132. The adjustment information generator 2132 can calculate the value of the ambient light sensing signal S1 that needs to be adjusted, and calculate the signal adjustment information ADJ1~ADJ3 corresponding to the touch signal driver 220-1, the source signal driver 220-2 and the gate voltage controller 220-3 according to the signal coupling ratios corresponding to the touch signal driver 220-1, the source signal driver 220-2 and the gate voltage controller 220-3 respectively.

[0030] The touch signal driver 220-1, the source signal driver 220-2 and the gate voltage controller 220-3 generate offset voltages VS1-VS3 according to the received signal adjustment information ADJ1-ADJ3, respectively, and provide the offset voltages VS1-VS3 to the corresponding touch signal terminal SX / RX, the source terminal SRC and the gate terminal GATE, respectively, so that the offset voltages VS1-VS3 are coupled to the signal transmission channel STC through the capacitor on the touch sensing panel TP, and are used to increase or decrease the ambient light sensing signal S1.

[0031] Please note that in this embodiment, any one of the offset voltages VS1-VS3 can be a rising voltage or a falling voltage. The voltage reference value of the ambient light sensing signal S1 can be increased by each offset voltage VS1-VS3 with a rising voltage difference; conversely, the voltage reference value of the ambient light sensing signal S1 can be reduced by each offset voltage VS1-VS3 with a falling voltage difference.

[0032] In this embodiment, the ambient light sensor ALS, the touch sensing panel TP and the gate driver GD can all be disposed in the panel area PP of the electronic device 200. The ambient light sensing signal driving circuit 230, the signal processor 210, the touch signal driver 220-1, the source signal driver 220-2 and the gate voltage controller 220-3 can all be disposed in the integrated circuit area ICP of the electronic device 200.

[0033] Incidentally, the processor 2131 and the adjustment information generator 2132 can both be implemented using digital circuits.

[0034] Please refer to Figure 3 , Figure 3 Schematic diagram of an electronic device according to an embodiment of the present invention is shown. The electronic device 300 has a display panel DP and a touch sensing panel TP integrated with each other and an ambient light sensor ALS. The display panel DP may have a display area DA. The ambient light sensor ALS may be disposed on the display panel DP and the touch sensing panel TP integrated with each other, and disposed outside the display area DA of the display panel DP, and forms an on-panel ambient light sensing and scanning mechanism.

[0035] Please refer to FIG. 4A to FIG. 4C , FIG. 4A to FIG. 4C Schematic diagrams showing different implementations of the ambient light sensing action of the present invention. Figure 4A In the embodiment, the ambient light sensor can perform multiple ambient light sensing actions in the ambient light sensing periods ALSF1 to ALSF3. Correspondingly, in the sub-periods TF1 to TF3 in each ambient light sensing period ALSF1 to ALSF3, the touch sensing panel can perform touch sensing actions. In the sub-periods DF1 to DF3 in each ambient light sensing period ALSF1 to ALSF3, the display panel of the electronic device can perform display actions. In the sub-periods SH1 to SH3 in each ambient light sensing period ALSF1 to ALSF3, the signal processor can perform a sampling action of the ambient light sensing signal.

[0036] In this embodiment, the ambient light sensing periods ALSF1 - ALSF3 may have equal time lengths.

[0037] exist Figure 4BIn the embodiment, the time length of the ambient light sensing period ALSF2 can be longer than the time length of the ambient light sensing period ALSF1. Among them, the sub-periods TF1, DF1, and SH1 in the ambient light sensing period ALSF1 can respectively perform touch sensing actions, display actions, and sampling actions of ambient light sensing signals. In the ambient light sensing period ALSF2, the touch sensing action can be performed in two sub-periods TF2 and TF3, the display action can be performed in two sub-periods DF2 and DF3, and the sampling action of the ambient light sensing signal can be performed in one sub-period SH2. In other words, the time of the ambient light sensing periods ALSF1 and ALSF2 can be dynamically adjusted, and during the ambient light sensing period ALSF1, a sub-period can be set to perform a touch sensing action and a display action before performing a sampling action, or during the ambient light sensing period ALSF2, a sub-period can be set to perform two touch sensing actions and a display action before performing a sampling action.

[0038] exist Figure 4C In the embodiment, the ambient light sensing period ALSF1 can have a longer time length. Correspondingly, multiple sub-periods TF1~TF3 can be set to perform touch sensing actions, multiple sub-periods DF1~FF3 can be set to perform display actions, multiple sub-periods BK1 and BK2 can be set to allow the electronic device to enter a blank period, and a sub-period SH1 can be set to perform a sampling action of the ambient light sensing signal. In other words, during the ambient light sensing period ALSF1, sub-periods can be set to perform a total of N touch sensing actions and display actions, and only one sampling action and N-1 blank periods can be performed.

[0039] In this embodiment, in an ambient light sensing period, the total time of the sub-periods TF1 - TF3 or the sub-periods DF2 and DF3 is greater than the time length of the sub-periods SH1 - SH3 .

[0040] Please refer to it synchronously Figure 2 as well as Figure 5 ,in Figure 5 The waveform diagram of the ambient light sensing action of the embodiment of the present invention is shown. In the electronic device 200, the analog front-end circuit 211 can generate the analog front-end output signal AFEO according to the ambient light sensing signal S1. In the multiple ambient light sensing periods ALSF1-ALSF4, the analog front-end output signal AFEO with a high voltage can be greater than and exceed the convertible range ADCR of the signal conversion action, and the analog front-end output signal AFEO with a low voltage can be lower than and exceed the convertible range ADCR of the signal conversion action.

[0041] Corresponding to the analog front-end output signal AFEO being a high voltage, taking the source signal driver 220-2 as an example of selecting the peripheral circuit, in the ambient light sensing period ALSF1, when the corresponding sample and hold signal S / H is enabled to start the sampling action of the ambient light sensing signal, the analog front-end output signal AFEO is greater than and exceeds the convertible range ADCR of the signal conversion action. In the ambient light sensing period ALSF3, the driving signal on the source driving terminal SRC is set to the voltage VD, and when the corresponding sample and hold signal S / H is enabled to start the sampling action of the ambient light sensing signal, the voltage of the signal on the source driving terminal SRC can be pulled down to the ground voltage for a time interval tpw, so that the analog front-end output signal AFEO is within the convertible range ADCR of the signal conversion action.

[0042] In the ambient light sensing period ALSF2, when the corresponding sample hold signal S / H is enabled to start the sampling action of the ambient light sensing signal, the analog front-end output signal AFEO is less than and exceeds the convertible range ADCR of the signal conversion action. In the ambient light sensing period ALSF3, the driving signal on the source driving terminal SRC is set to the ground voltage. When the corresponding sample hold signal S / H is enabled to start the sampling action of the ambient light sensing signal, the voltage of the signal on the source driving terminal SRC can be pulled up to the voltage VD for a time interval tpw, so that the analog front-end output signal AFEO is within the convertible range ADCR of the signal conversion action.

[0043] By making the signal on the source driving terminal SRC provide a rising or falling voltage difference, the voltage value of the analog front-end output signal AFEO can be pulled up or down accordingly and enter the convertible range ADCR. In this way, the analog-to-digital converter (ADC) 212 can effectively perform the signal format conversion operation of the analog front-end output signal AFEO to obtain effective ambient light sensing information.

[0044] Please refer to Figure 6 , Figure 6 A flow chart of an ambient light sensing method according to an embodiment of the present invention is shown. The ambient light sensing method includes, in step S610, causing an ambient light sensor to generate an ambient light sensing signal, wherein the ambient light sensor is coupled to a touch sensing panel. In step S620, causing a signal processor to receive the ambient light sensing signal through a signal transmission channel. In step S630, generating at least one signal adjustment information according to a signal range of the ambient light sensing signal. And, in step S640, providing at least one signal adjustment information to at least one peripheral circuit, causing at least one peripheral circuit to generate an offset voltage according to the at least one signal adjustment information, and causing the offset voltage to be coupled to the signal transmission channel through the touch sensing panel to adjust the ambient light sensing signal.

[0045] The implementation details of the above steps have been described in detail in the aforementioned embodiments and implementation methods, and will not be elaborated on below.

[0046] In summary, the electronic device of the present invention detects whether the signal range of the ambient light sensing signal exceeds the convertible range, and thereby enables the peripheral circuit to provide an offset voltage to the touch sensing panel. Through the equivalent capacitance on the touch sensing panel, the offset voltage can be coupled to the transmission channel of the ambient light sensing signal. Through this, the ambient light sensing signal can be appropriately adjusted to enter the convertible range, maintaining the validity of the ambient light sensing signal.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electronic device, comprising: An ambient light sensor, coupled to the touch sensing panel, generates an ambient light sensing signal; A signal processor coupled to the ambient light sensor through a signal transmission channel to receive the ambient light sensing signal, and to generate a digital signal and at least one signal adjustment information according to a signal range of the ambient light sensing signal; At least one peripheral circuit is coupled between the signal processor and the touch sensing panel, and generates an offset voltage according to the at least one signal adjustment information, so that the offset voltage is coupled to the signal transmission channel through the touch sensing panel to adjust the ambient light sensing signal; as well as The ambient light sensing signal driving circuit is coupled to the ambient light sensor and provides the ambient light sensor with a sensing driving signal. 2 . The electronic device according to claim 1 , wherein when the signal range of the ambient light sensing signal is higher than a default convertible range, the at least one peripheral circuit provides the offset voltage to reduce the ambient light sensing signal. 3 . The electronic device according to claim 2 , wherein when the signal range of the ambient light sensing signal is lower than the convertible range, the at least one peripheral circuit provides the offset voltage to increase the ambient light sensing signal.

4. The electronic device according to claim 1, wherein the signal processor comprises: an analog front-end circuit, coupled to the signal transmission channel to receive the ambient light sensing signal; an analog-to-digital converter, coupled to the analog front-end circuit to perform a signal format conversion operation on the ambient light sensing signal to generate output information; as well as The signal adjustment information generator is coupled to the analog-to-digital converter, and generates the at least one signal adjustment information corresponding to the at least one peripheral circuit according to the output information. 5 . The electronic device according to claim 1 , wherein the at least one peripheral circuit comprises at least one of a source signal driver, a gate voltage controller, and a touch sensing signal driver.

6. The electronic device according to claim 1, wherein there is a signal coupling rate between the at least one peripheral circuit and the signal transmission channel, and the signal processor provides the at least one signal adjustment information to the corresponding at least one peripheral circuit according to the signal coupling rate, wherein the signal coupling rate is determined by the equivalent capacitance value between the at least one peripheral circuit and the signal transmission channel. 7 . The electronic device according to claim 1 , wherein the ambient light sensing signal driving circuit, the signal processor and the at least one peripheral circuit are disposed in an integrated circuit region, and the ambient light sensor and the touch sensing panel are disposed in a panel region. 8 . The electronic device according to claim 1 , wherein the ambient light sensor performs an ambient light sensing action during an ambient light sensing period, and the signal processor performs a sampling action of the ambient light sensing signal during at least a first sub-period in the ambient light sensing period.

9. The electronic device according to claim 8, wherein during at least a second sub-period of the ambient light sensing period, the touch sensing panel performs a touch sensing action, and during at least a third sub-period of the ambient light sensing period, a display panel of the electronic device performs an image display action. 10 . The electronic device according to claim 9 , wherein a total time of the second sub-period or the third sub-period in the ambient light sensing period is greater than that of the first sub-period. The electronic device according to claim 9 , wherein during at least a fourth sub-period of the ambient light sensing period, the electronic device enters a blank period.

12. An ambient light sensing method, comprising: enabling an ambient light sensor to generate an ambient light sensing signal, wherein the ambient light sensor is coupled to a touch sensing panel; enabling a signal processor to receive the ambient light sensing signal through a signal transmission channel; Generating a digital signal and at least one signal adjustment information according to a signal range of the ambient light sensing signal; as well as The at least one signal adjustment information is provided to at least one peripheral circuit, so that the at least one peripheral circuit generates an offset voltage according to the at least one signal adjustment information, and the offset voltage is coupled to the signal transmission channel through the touch sensing panel to adjust the ambient light sensing signal. 13 . The ambient light sensing method according to claim 12 , wherein when the signal range of the ambient light sensing signal is higher than a default convertible range, the at least one peripheral circuit is enabled to provide the offset voltage to reduce the ambient light sensing signal. 14 . The ambient light sensing method according to claim 13 , wherein when the signal range of the ambient light sensing signal is lower than the convertible range, the at least one peripheral circuit is enabled to provide the offset voltage to increase the ambient light sensing signal.

15. The ambient light sensing method according to claim 12, further comprising: Providing the at least one signal adjustment information to the corresponding at least one peripheral circuit according to the signal coupling ratio between the at least one peripheral circuit and the signal transmission channel; as well as The signal coupling rate is determined according to an equivalent capacitance value between the at least one peripheral circuit and the signal transmission channel.

16. The ambient light sensing method according to claim 12, further comprising: performing an ambient light sensing action during an ambient light sensing period; as well as The ambient light sensing signal is sampled during at least a first sub-period in the ambient light sensing period.

17. The ambient light sensing method according to claim 16, further comprising: Performing a touch sensing action in at least one second sub-period of the ambient light sensing period; as well as During at least a third sub-period of the ambient light sensing period, an image display operation is performed.

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