Instant detection method applied to touch display panel

Abstract

The invention discloses a real-time detection method applied to a touch display panel. The instant detection method comprises the following steps: (a) during the period when the touch display panel displays a display frame, respectively carrying out resistance and capacitance load detection on a channel of the touch display panel at a first sampling frequency and a second sampling frequency to respectively obtain first detection data and second detection data, and the first sampling frequency is different from the second sampling frequency; and (b) judging whether the channel is in an open circuit state or not according to the first detection data, the second detection data and the specific touch scanning data.

Description

Technical Field

[0001] The present invention relates to a touch display panel, and in particular to an instant detection method applied to a touch display panel. Background Art

[0002] Since traditional watch platforms with touch functions do not have the function of recording touch logs in real time and cannot find touch logs when touch abnormalities (such as false alarm points / no touch) occur, the current improvement method is to add an algorithm analysis mechanism to the firmware and temporarily store the analysis results in a memory (such as SRAM), and then use the watchdog in the platform to read the memory every second to print the real-time touch log in the platform log.

[0003] However, the traditional method requires disassembling the machine to print out the debugging information. Not only can the original data when certain abnormal events occur not be obtained immediately, but also the abnormal phenomena with low probability may not be reproduced again. It is also impossible to perform related tests (such as water immersion, high and low temperature, drop, etc.) after disassembling the machine, which needs to be improved.

[0004] In addition, the traditional method is to print out the original data in the system log, but it is often unable to print continuously due to sheet loss due to system resource limitations. When the system prints the log, it will seriously slow down the system response and affect the test results. Moreover, it is necessary to further manually analyze the corresponding relationship between the original data and the algorithm, which needs to be improved. Summary of the invention

[0005] Therefore, the present invention proposes a real-time detection method applied to a touch display panel to effectively solve the above problems encountered in the prior art.

[0006] A preferred embodiment of the present invention is a real-time detection method for a touch display panel. In this embodiment, the real-time detection method includes the following steps: (a) performing a resistance and capacitance load (RC loading) detection on a channel (Channel) of the touch display panel at a first sampling frequency and a second sampling frequency respectively during a period when the touch display panel displays a display frame (Displayframe) to obtain first detection data and second detection data respectively, wherein the first sampling frequency is different from the second sampling frequency; and (b) determining whether the channel is in an open circuit (Open) state according to the first detection data, the second detection data and the specific touch scan data.

[0007] In one embodiment, the touch display panel is an organic light emitting diode (OLED) panel and is driven by a touch and display driver integration (TDDI) circuit.

[0008] In one embodiment, the touch display panel includes a plurality of channels including a channel, and the real-time detection method sequentially performs step (a) and step (b) on the plurality of channels to simultaneously determine whether the plurality of channels are in an open circuit state.

[0009] In one embodiment, step (a) uses different first sampling frequencies and second sampling frequencies to compensate for the impact caused by the difference in high and low temperature environments.

[0010] In one embodiment, step (b) is to respectively subtract the first detection data and the second detection data from the specific touch scan data to obtain a first difference and a second difference, and then determine whether the channel is in an open circuit state according to whether the first difference and the second difference are greater than a preset difference.

[0011] In one embodiment, the sampling frequency and number of times of the resistance and capacitance load detection in step (a) can be independently set.

[0012] In one embodiment, the start and total number of horizontal line scans of a display frame can be independently set.

[0013] In one embodiment, the touch display panel includes a plurality of channels, each of which can be scanned independently and different arrangements of the channels can be supported.

[0014] In one embodiment, the specific touch scan data in step (b) is original touch scan data.

[0015] In one embodiment, the specific touch scan data in step (b) is touch scan data obtained by performing touch scan at an independently set touch scan frequency.

[0016] In one embodiment, the detection accuracy of the real-time detection method can detect micro-open defects of >2KOhm.

[0017] Another preferred embodiment of the present invention is a real-time detection method for a touch display panel. In this embodiment, the touch display panel includes N channels, N is a positive integer greater than 1, and includes the following steps: (a) during a display frame displayed by the touch display panel, in a specific detection mode, a short-circuit scanning sampling is performed on one channel of the N channels and the remaining (N-1) channels of the multiple channels are grounded at the same time; and (b) by using the resistance voltage division principle, it is determined whether the channel is in a short-circuit state with the remaining (N-1) channels or the ground terminal.

[0018] In one embodiment, the touch display panel is an organic light emitting diode (OLED) panel and is driven by a touch and display driver integration (TDDI) circuit.

[0019] In one embodiment, the real-time detection method performs step (a) and step (b) on each of the N channels to determine whether each channel is in a short circuit state with the remaining (N-1) channels or the ground terminal.

[0020] In one embodiment, step (b) uses the resistor voltage division principle to individually detect whether the channel is short-circuited to compensate for the impact caused by the difference in high and low temperature environments.

[0021] In one embodiment, the detection accuracy of the real-time detection method can detect micro short circuit defects of <4MOhm.

[0022] In one embodiment, the specific detection mode is a horizontal synchronization signal (H-Sync) time-sharing detection mode, wherein the scanning frequency and the starting number of horizontal lines can be independently set and each horizontal synchronization signal sequentially scans a channel, and N consecutive horizontal synchronization signals obtain the short-circuit data of the N channels.

[0023] In one embodiment, the specific detection mode is a continuous detection mode, and its scanning frequency and the starting number of horizontal lines can be set independently. When the starting number of horizontal lines is met, the resistance voltage division data of N channels are continuously scanned to complete the short circuit detection of the N channels.

[0024] In one embodiment, when the touch display panel has an in-cell stacked structure, the real-time detection method is set to perform short circuit detection on the channel during the non-display multiplexer operation time during the display period of the touch display panel.

[0025] In one embodiment, when the touch display panel has an On-Cell stacked structure, the real-time detection method is configured to perform short circuit detection on the channel during a non-display period or a display period of the touch display panel.

[0026] In one embodiment, when the touch display panel has an in-cell stacked structure, the real-time detection method can only be set to perform short circuit detection on the channel during the non-display period of the touch display panel.

[0027] Compared with the prior art, the real-time detection method applied to the touch display panel according to the present invention can store the touch-related logs when the abnormal event occurs in real time and store the target value after the algorithm data analysis and processing in the memory. It also has a data compression function and can record the algorithm data for a long time to achieve the following specific effects:

[0028] (1) Simplify the system integration process, making it easy to integrate into different systems and export debugging information without disassembling the machine;

[0029] (2) Increased flexibility in use by storing and exporting firmware debugging information under any abnormal conditions according to different problems; and

[0030] (3) It avoids the need to manually analyze data after collecting logs, thereby improving optimization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of a real-time detection method applied to a touch display panel in a preferred embodiment of the present invention.

[0032] Figure 2 The timing diagram for dynamic adjustment of sampling frequency and repetition times in open circuit detection mode.

[0033] Figure 3 It is a timing diagram for determining whether a channel is open or not according to whether a first difference and a second difference after subtracting the first detection data and the second detection data from the specific touch scan data are greater than a preset difference.

[0034] Figure 4 To adopt Figure 1 Schematic diagram of the instant detection method that can accurately detect micro-open defects of >2KOhm.

[0035] Figure 5 It is a flow chart of a real-time detection method applied to a touch display panel in another preferred embodiment of the present invention.

[0036] Figure 6 They are the timing diagrams of sampling frequency and repetition times in different short-circuit detection modes.

[0037] Figure 7 The first short circuit detection mode can be used only in the display period, while the second short circuit detection mode can be used in the display period and the non-display period.

[0038] Figure 8 To adopt Figure 5 Schematic diagram of the instant detection method that can accurately detect micro-short defects of <4MOhm.

[0039] 9A to 9D The schematic diagram is respectively for performing short-circuit scanning sampling on each channel separately, and simultaneously grounding the remaining channels, and judging whether each channel is in a short-circuit state with the remaining channels or the ground terminal by the principle of resistance voltage division.

[0040] Description of main component symbols:

[0041] S10…Step

[0042] S12…Step

[0043] S20…Steps

[0044] S22…Step

[0045] MP1…Displays the multiplexer operation period

[0046] MP2…Non-display multiplexer operation period

[0047] TE...Enable signal

[0048] MUX1…Multiplexer control signal

[0049] MUX2…Multiplexer control signal

[0050] MUX3…Multiplexer control signal

[0051] MUX4…Multiplexer control signal

[0052] MUX5…Multiplexer control signal

[0053] MUX6…Multiplexer control signal

[0054] t1~t26…time

[0055] NDP…Non-display period

[0056] DP…Display Period

[0057] Vsync…vertical synchronization signal

[0058] H-Sync…Horizontal synchronization signal

[0059] TF1~TF4…Test data

[0060] 1~48…1st channel to 48th channel DETAILED DESCRIPTION

[0061] A preferred embodiment of the present invention is a real-time detection method for a touch display panel. In this embodiment, the touch display panel may be an organic light emitting diode (OLED) panel and may be driven by a touch and display driver integration (TDDI) circuit, but is not limited thereto.

[0062] Please refer to Figure 1 , Figure 1 This is a flow chart of the instant detection method applied to the touch display panel in this embodiment. Figure 1 As shown, the instant detection method includes the following steps:

[0063] Step S10: performing a resistance-capacitance load (RC loading) test on a channel of the touch display panel at a first sampling frequency and a second sampling frequency respectively during a period when the touch display panel displays a display frame, so as to obtain first test data and second test data respectively, wherein the first sampling frequency is different from the second sampling frequency; and

[0064] Step S12: determining whether the channel is in an open state according to the first detection data, the second detection data and the specific touch scan data.

[0065] It should be noted that the touch display panel includes multiple channels including the channel and the multiple channels can be scanned independently and different arrangements of the multiple channels can be supported. The real-time detection method of the present invention can sequentially perform steps S10 and S12 on the multiple channels to simultaneously determine whether the multiple channels are in an open state.

[0066] As for step S10, the reason why step S10 uses different first sampling frequencies and second sampling frequencies is mainly to compensate for the influence caused by the difference in high and low temperature environments. In addition, the sampling frequency and number of times of resistance and capacitance load detection in step S10, the start and total number of horizontal line scanning of the display frame can be independently set to increase the flexibility of application.

[0067] As for step S12, step S12 can respectively subtract the first detection data and the second detection data from the specific touch scan data to obtain a first difference and a second difference, and then compare the first difference and the second difference with the preset difference, and determine whether the channel is in an open circuit state based on whether the first difference and the second difference are greater than the preset difference.

[0068] In practical applications, the specific touch scanning data in step S12 may be original touch scanning data or touch scanning data obtained by performing touch scanning at an independently set touch scanning frequency, but is not limited thereto.

[0069] Please refer to Figure 2 , Figure 2 This is a timing diagram of the dynamic adjustment of the sampling frequency and repetition times in the open circuit detection mode. Figure 2 As shown, the enable signal TE changes from low level to high level at time t1 and changes from high level to low level at time t3; the multiplexer control signals MUX1-MUX6 all change from high level to low level at time t2 and change from low level to high level at time t4.

[0070] The display period DP of the touch display panel includes a display multiplexer action period MP1 and a non-display multiplexer action period MP2. When the touch display panel enters the display multiplexer action period MP1, the multiplexer control signal MUX1 changes from a high level to a low level at time t5 and changes from a low level to a high level at time t7; the multiplexer control signal MUX2 changes from a high level to a low level at time t8 and changes from a low level to a high level at time t9; the multiplexer control signal MUX3 changes from a high level to a low level at time t10 and changes from a low level to a high level at time t12; the multiplexer control signal MUX4 changes from a high level to a low level at time t13 and changes from a low level to a high level at time t14; the multiplexer control signal MUX5 changes from a high level to a low level at time t15 and changes from a low level to a high level at time t17; the multiplexer control signal MUX6 changes from a high level to a low level at time t18 and changes from a low level to a high level at time t19.

[0071] During the display multiplexer operation period MP1, the touch detection mode is turned off, and the sampling frequency and repetition times in the open circuit detection mode can be dynamically adjusted according to actual needs. For example, the real-time open circuit detection can be performed at time t6 to t8, time t11 to t13, and time t16 to t18, and steps S10 and S12 are sequentially executed on different channels to simultaneously determine whether these channels are in an open circuit state, but not limited to this.

[0072] Then, enter the non-display multiplexer action period MP2. During the non-display multiplexer action period MP2, the touch detection mode is activated, and the sampling frequency and repetition times in the open circuit detection mode can be dynamically adjusted according to actual needs. For example, if the touch detection is performed from time t20 to t22 and from time t23 to t25, the real-time open circuit detection can use two different sampling frequencies to perform resistance and capacitance load detection. For example, the real-time open circuit detection can be performed from time t20 to t21 and from time t23 to t24, or the real-time open circuit detection can be synchronized with the touch detection from time t20 to t22 and from time t23 to t25, and step S10 and step S12 are performed on different channels in sequence to simultaneously determine whether the channels are in an open circuit state, but this is not limited to this. As for the situation after time t25, it can also be deduced in this way, and it is not further described here.

[0073] Please refer to Figure 3 In the non-display period NDP, the vertical synchronization signal Vsync is at a high level and the touch detection mode is turned off. In the display period DP, the vertical synchronization signal Vsync is at a low level and the touch detection mode is turned on. At this time, the sampling frequency and repetition times in the open circuit detection mode can be dynamically adjusted according to actual needs.

[0074] For example, assuming that the detection data TF1 and TF2 obtained by performing touch detection on the touch display panel correspond to sampling frequency 0, the detection data TF3 corresponds to sampling frequency 1, and the detection data TF4 corresponds to sampling frequency 2, the real-time detection method of the present invention can subtract the detection data TF3 from TF1 to obtain a first difference or subtract the detection data TF3 from TF4 to obtain a second difference, and then determine whether the channel is open circuit based on whether the first difference and the second difference are greater than the preset difference. Therefore, the real-time detection method of the present invention only needs to perform a single scan to fully monitor whether all channels of the touch display panel have a micro-open circuit.

[0075] Please refer to Figure 4 ,according to Figure 4 From the curve graph, we can see that: if we use Figure 1 The real-time detection method can accurately detect that the channel has a micro-open defect greater than 2KOhm, that is, Figure 1 The detection accuracy of the instant detection method can detect that the channel has a micro-open circuit defect greater than 2KOhm, but is not limited to this.

[0076] Another preferred embodiment of the present invention is also a real-time detection method for a touch display panel. In this embodiment, the touch display panel may be an organic light emitting diode (OLED) panel and may be driven by a touch and display driver integration (TDDI) circuit. The touch display panel includes N channels, where N is a positive integer greater than 1, but is not limited thereto.

[0077] Please refer to Figure 5 , Figure 5 This is a flow chart of the instant detection method applied to the touch display panel in this embodiment. Figure 5 As shown, the instant detection method includes the following steps:

[0078] Step S20: During a period when the touch display panel displays a display frame, in a specific detection mode, short-circuit scanning sampling is performed on a channel among the N channels and the remaining (N-1) channels among the multiple channels are grounded at the same time; and

[0079] Step S22: determining individually whether the channel and the remaining (N-1) channels or the ground terminal are in a short-circuit state based on the resistance voltage division principle.

[0080] It should be noted that the instant detection method of the present invention performs steps S20 and S22 on each of the N channels to determine whether each channel is in a short circuit state with the remaining (N-1) channels or the ground terminal. In practical applications, step S22 uses the principle of resistor voltage division to individually detect whether the channel is short-circuited to compensate for the impact caused by the difference in high and low temperature environments, but is not limited to this.

[0081] like Figure 6 As shown, the horizontal synchronization signal H-Sync (enable signal TE) changes from a low level to a high level at time t1 and changes from a high level to a low level at time t3; the multiplexer control signals MUX1~MUX6 all change from a high level to a low level at time t2 and change from a low level to a high level at time t4.

[0082] The display period DP of the touch display panel includes a display multiplexer action period MP1 and a non-display multiplexer action period MP2. When the touch display panel enters the display multiplexer action period MP1, the multiplexer control signal MUX1 changes from a high level to a low level at time t5 and changes from a low level to a high level at time t7; the multiplexer control signal MUX2 changes from a high level to a low level at time t8 and changes from a low level to a high level at time t10; the multiplexer control signal MUX3 changes from a high level to a low level at time t11 and changes from a low level to a high level at time t13; the multiplexer control signal MUX4 changes from a high level to a low level at time t14 and changes from a low level to a high level at time t16; the multiplexer control signal MUX5 changes from a high level to a low level at time t17 and changes from a low level to a high level at time t19; the multiplexer control signal MUX6 changes from a high level to a low level at time t20 and changes from a low level to a high level at time t22.

[0083] like Figure 5 The specific detection mode adopted in step S20 is Figure 6 Short circuit detection (mode 1): horizontal synchronization signal (H-Sync) time-sharing detection mode, which can only operate during the non-display multiplexer operation period MP2 (for example Figure 6 The time t23 to t24) and its scanning frequency and the starting number of horizontal lines can be independently set and each horizontal synchronization signal scans a channel in sequence, so the short-circuit data of the N channels can be obtained through N consecutive horizontal synchronization signals.

[0084] like Figure 5 The specific detection mode adopted in step S20 is Figure 6 Short circuit detection (mode 2): continuous detection mode, it can be applied to display the multiplexer operation period MP1 (for example Figure 6 The time t6 to t9, the time t12 to t15, the time t18 to t21) and the non-display multiplexer operation period MP2 (for example Figure 6 The time t23 to t24, time t25 to t26 in the above description and the scanning frequency and the starting number of horizontal lines can be set independently. When the setting of the starting number of horizontal lines is satisfied, the short circuit detection of the N channels can be completed by continuously scanning the resistance voltage division data of the N channels. The situation after the time t26 can be deduced in the same way and will not be described in detail here.

[0085] Please refer to Figure 7 In the non-display period NDP, the vertical synchronization signal Vsync is at a high level and the touch detection mode is turned off. In the display period DP, the vertical synchronization signal Vsync is at a low level and the touch detection mode is turned on. At this time, the sampling frequency and repetition times in the short-circuit detection mode can be dynamically adjusted according to actual needs.

[0086] For example, if Figure 5 The specific detection mode adopted in step S20 is Figure 7 Short circuit detection (mode 1): horizontal synchronization signal (H-Sync) time-sharing detection mode, the instant detection method can only be set to perform short circuit detection on N channels during the display period DP of the touch display panel, and the short circuit data of the N channels is obtained by using N consecutive horizontal synchronization signals during the display period DP of the touch display panel. Figure 5 The specific detection mode adopted in step S20 is Figure 7 Short-circuit detection in (mode 2): continuous detection mode, the instant detection method can be set to perform short-circuit detection on N channels during the display period DP or the non-display period NDP of the touch display panel, and the short-circuit detection of the N channels is completed by continuously scanning the resistance voltage division data of the N channels during the display period DP or the non-display period NDP of the touch display panel.

[0087] In actual applications, when the touch display panel has an in-cell stacking structure, the real-time detection method can be set to perform short-circuit detection on the channel during the non-display multiplexer operation period MP2 within the display period DP of the touch display panel, or the real-time detection method can only be set to perform short-circuit detection on the channel during the non-display period NDP of the touch display panel, but it is not limited thereto. When the touch display panel has an on-cell stacking structure, the real-time detection method can be set to perform short-circuit detection on the channel during the non-display period NDP or the display period DP of the touch display panel, but it is not limited thereto.

[0088] Please refer to Figure 8 ,according to Figure 8 From the curve graph, we can see that: if we use Figure 5 The detection accuracy of the instant detection method can detect micro short circuit defects of <4MOhm, that is, Figure 5 The instant detection method has a detection accuracy that can detect micro short circuit defects <4MOhm, but is not limited to this.

[0089] Please refer to 9A to 9D , 9A to 9D The schematic diagram is respectively for performing short-circuit scanning sampling on each channel separately, and simultaneously grounding the remaining channels, and judging whether each channel is in a short-circuit state with the remaining channels or the ground terminal by the principle of resistance voltage division.

[0090] like Fig.9A As shown, the instant detection method performs short-circuit scanning sampling on the first channel 1 alone and simultaneously grounds the remaining channels (for example, the second channel 2 to the forty-eighth channel 48) and determines whether the first channel 1 is in a short-circuit state with the remaining channels (for example, the second channel 2 to the forty-eighth channel 48) or the ground terminal through the principle of resistance voltage division.

[0091] Similarly, if Fig. 9B As shown, the instant detection method performs short-circuit scanning sampling on the second channel 2 alone and simultaneously grounds the remaining channels (e.g., the first channel 1, the third channel 3 to the forty-eighth channel 48) and determines whether the second channel 2 is in a short-circuit state with the remaining channels (e.g., the first channel 1, the third channel 3 to the forty-eighth channel 48) or the ground terminal through the principle of resistance voltage division.

[0092] Similarly, if Fig. 9C As shown, the instant detection method performs short-circuit scanning sampling on the third channel 3 alone and simultaneously grounds the remaining channels (e.g., the first channel 1, the second channel 2, the fourth channel 4 to the forty-eighth channel 48) and determines through the principle of resistance voltage division whether the third channel 3 is in a short-circuit state with the remaining channels (e.g., the first channel 1, the second channel 2, the fourth channel 4 to the forty-eighth channel 48) or the ground terminal.

[0093] Similarly, if Fig.9D As shown, the instant detection method performs short-circuit scanning sampling on the fourth channel 4 alone and simultaneously grounds the remaining channels (e.g., the first channel 1, the second channel 2, the third channel 3, the fifth channel 5 to the forty-eighth channel 48) and determines through the principle of resistance voltage division whether the fourth channel 4 is in a short-circuit state with the remaining channels (e.g., the first channel 1, the second channel 2, the third channel 3, the fifth channel 5 to the forty-eighth channel 48) or the ground terminal.

[0094] Compared with the prior art, the real-time detection method applied to the touch display panel according to the present invention can store the touch-related logs when the abnormal event occurs in real time and store the target value after the algorithm data analysis and processing in the memory. It also has a data compression function and can record the algorithm data for a long time to achieve the following specific effects:

[0095] (1) Simplify the system integration process, making it easy to integrate into different systems and export debugging information without disassembling the machine;

[0096] (2) Increased flexibility in use by storing and exporting firmware debugging information under any abnormal conditions according to different problems; and

[0097] (3) It avoids the need to manually analyze data after collecting logs, thereby improving optimization efficiency.

Claims

1. A real-time detection method for a touch display panel, characterized in that: The following steps are involved: (a) performing a resistance and capacitance load test on a channel of the touch display panel at a first sampling frequency and a second sampling frequency respectively during a period when the touch display panel displays a display frame, so as to obtain a first test data and a second test data respectively, wherein the first sampling frequency is different from the second sampling frequency; and (b) determining whether the channel is in an open circuit state according to the first detection data, the second detection data and a specific touch scan data.

2. The instant detection method for a touch display panel according to claim 1, characterized in that: The touch display panel is an organic light emitting diode panel and is driven by a touch and display driving integrated circuit.

3. The instant detection method for a touch display panel according to claim 1, characterized in that: The touch display panel includes a plurality of channels including the channel, and the real-time detection method sequentially performs step (a) and step (b) on the plurality of channels to simultaneously determine whether the plurality of channels are in the open circuit state.

4. The instant detection method for a touch display panel according to claim 1, characterized in that: Step (a) uses different first sampling frequencies and second sampling frequencies to compensate for the effects of differences in high and low temperature environments.

5. The instant detection method for a touch display panel according to claim 1, characterized in that: Step (b) respectively subtracts the first detection data and the second detection data from the specific touch scan data to obtain a first difference and a second difference, and then determines whether the channel is in the open circuit state according to whether the first difference and the second difference are greater than a preset difference.

6. The instant detection method for a touch display panel according to claim 1, characterized in that: The sampling frequency and number of times of the resistance and capacitance load detection in step (a) can be independently set.

7. The instant detection method for a touch display panel according to claim 1, characterized in that: The start and total number of horizontal line scans in the display frame can be set independently.

8. The instant detection method for a touch display panel according to claim 1, characterized in that: The touch display panel includes a plurality of channels, each of which can be scanned independently and different arrangement settings of the plurality of channels can be supported.

9. The instant detection method for a touch display panel according to claim 1, characterized in that: The specific touch scan data in step (b) is original touch scan data.

10. The instant detection method for a touch display panel according to claim 1, characterized in that: The specific touch scanning data in step (b) is touch scanning data obtained by performing touch scanning at an independently set touch scanning frequency.

11. The instant detection method for a touch display panel according to claim 1, characterized in that: The detection accuracy of this instant detection method can detect micro-open circuit defects >2KOhm.

12. A real-time detection method for a touch display panel, characterized in that: The touch display panel includes N channels, where N is a positive integer greater than 1, and includes the following steps: (a) during a period when the touch display panel displays a display frame, in a specific detection mode, performing a short-circuit scan sampling on one of the N channels and simultaneously grounding the remaining (N-1) channels of the plurality of channels; and (b) Using a resistor voltage division principle, it is determined whether the channel and the remaining (N-1) channels or the ground terminal are in a short circuit state.

13. The instant detection method for a touch display panel according to claim 12, characterized in that: The touch display panel is an organic light emitting diode panel and is driven by a touch and display driving integrated circuit.

14. The instant detection method for a touch display panel according to claim 12, wherein: The instant detection method performs steps (a) and (b) on each of the N channels respectively to determine whether each channel is in the short circuit state with the remaining (N-1) channels or the ground terminal.

15. The instant detection method for a touch display panel according to claim 12, characterized in that: Step (b) uses the resistor voltage division principle to individually detect whether the channel is short-circuited to compensate for the impact caused by the difference in high and low temperature environments.

16. The instant detection method for a touch display panel according to claim 12, wherein: The detection accuracy of this instant detection method can detect micro short circuit defects of <4MOhm.

17. The instant detection method for a touch display panel according to claim 12, characterized in that: The specific detection mode is a horizontal synchronization signal time-sharing detection mode, the scanning frequency and the starting number of horizontal lines can be independently set and each horizontal synchronization signal sequentially scans a channel, and N consecutive horizontal synchronization signals obtain the short-circuit data of the N channels.

18. The instant detection method for a touch display panel according to claim 12, characterized in that: The specific detection mode is a continuous detection mode, and the scanning frequency and the starting number of horizontal lines can be set independently. When the starting number of horizontal lines is met, the resistance voltage division data of N channels are continuously scanned to complete the short circuit detection of the N channels.

19. The instant detection method for a touch display panel according to claim 17, characterized in that: When the touch display panel has an embedded stacked structure, the real-time detection method is set to perform the short circuit detection on the channel during the non-display multiplexer action time during the display period of the touch display panel.

20. The instant detection method for a touch display panel according to claim 18, characterized in that: When the touch display panel has an On-Cell stacked structure, the real-time detection method is configured to perform the short circuit detection on the channel during the non-display or display period of the touch display panel.

21. The instant detection method for a touch display panel according to claim 18, characterized in that: When the touch display panel has an embedded stacked structure, the real-time detection method can only be set to perform the short circuit detection on the channel during the non-display period of the touch display panel.

Images