Display panel and display device

Abstract

The invention discloses a display panel and a display device, the display panel comprises a light sensing module and a touch electrode wire, the light sensing module comprises a light sensing transistor, a detection signal is applied to a first electrode of the light sensing transistor, and the light sensing transistor is configured to generate a light current signal according to the detection signal and illumination; the touch electrode wires are configured to transmit touch signals; the driving stage of the display panel comprises a display stage and a vertical intermittent stage, the display stage and the vertical intermittent stage are alternately arranged, and the vertical intermittent stage comprises a touch control stage; in a plurality of touch control stages, the detection signal has a first voltage; in at least one display stage, the detection signal has a second voltage, and the second voltage is not equal to the first voltage. In the multiple touch stages, the detection signal keeps the first voltage, so that the touch noise phenomenon is reduced or avoided, and the touch performance of the display panel is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the development of display technology, a light sensing module is added to the display panel to adjust the display brightness under different ambient brightness.

[0003] A display panel equipped with a light sensing module has a touch noise phenomenon. Summary of the invention

[0004] The present invention provides a display panel and a display device, so as to reduce the touch noise phenomenon and ensure the touch performance of the display panel.

[0005] In a first aspect, an embodiment of the present invention provides a display panel, comprising a light sensing module and a touch electrode line, wherein the light sensing module comprises a light sensing transistor, a detection signal is applied to a first electrode of the light sensing transistor, and the light sensing transistor is configured to generate a photocurrent signal according to the detection signal and light; and the touch electrode line is configured to transmit a touch signal;

[0006] The driving stage of the display panel includes a display stage and a vertical intermittent stage, the display stage and the vertical intermittent stage are arranged alternately, and the vertical intermittent stage includes a touch stage;

[0007] In a plurality of the touch control stages, the detection signal has a first voltage; in at least one of the display stages, the detection signal has a second voltage, and the second voltage is not equal to the first voltage.

[0008] In a second aspect, an embodiment of the present invention provides a display panel, comprising a light sensing module and a touch electrode line, wherein the light sensing module comprises a light sensing transistor, a detection signal is applied to a first electrode of the light sensing transistor, and the light sensing transistor is configured to generate a photocurrent signal according to the detection signal and light; and the touch electrode line is configured to transmit a touch signal;

[0009] The driving stage of the display panel includes a display stage and a vertical intermittent stage, the display stage and the vertical intermittent stage are arranged alternately, and the vertical intermittent stage includes a touch stage and a light detection stage;

[0010] In a plurality of the touch detection stages, the detection signal has a first voltage; in at least one of the light detection stages, the detection signal has a second voltage, and the second voltage is not equal to the first voltage.

[0011] In a third aspect, an embodiment of the present invention provides a display device, comprising the display panel described in the first aspect or the second aspect.

[0012] In the display panel of the embodiment of the present invention, a detection signal is applied to the first electrode of the photosensitive transistor of the photosensitive module, and then a photocurrent signal is generated in combination with light, and then the display brightness of the display panel is adjusted under different ambient brightness. The driving stage of the display panel includes an alternating display stage and a vertical intermittent stage, and the vertical intermittent stage includes a touch stage. The detection signals in multiple touch stages have the same first voltage, which avoids the voltage jump of the detection signal causing the touch signal in the touch electrode line to produce coupling effects, and reduces or even avoids the generation of touch noise. The first voltage of the detection signal in multiple touch stages is different from the second voltage of the detection signal in at least one display stage. The detection signals in different display stages have voltage jumps, which reduces or even avoids the threshold voltage offset of the photosensitive transistor, ensures the stable operation of the photosensitive transistor, and improves the accuracy of light sensing acquisition.

[0013] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of the structure of a light sensing module provided by an embodiment of the present invention;

[0017] Figure 3 A signal timing diagram provided by an embodiment of the present invention;

[0018] Figure 4 Another signal timing diagram provided by an embodiment of the present invention;

[0019] Figure 5 Another signal timing diagram provided by an embodiment of the present invention;

[0020] Figure 6 Another signal timing diagram provided by an embodiment of the present invention;

[0021] Figure 7 Another signal timing diagram provided by an embodiment of the present invention;

[0022] Figure 8 Another signal timing diagram provided by an embodiment of the present invention;

[0023] Fig. 9 Another signal timing diagram provided by an embodiment of the present invention;

[0024] Fig.10 Another signal timing diagram provided by an embodiment of the present invention;

[0025] Fig.11 Another signal timing diagram provided by an embodiment of the present invention;

[0026] Fig.12 Another signal timing diagram provided by an embodiment of the present invention;

[0027] Fig.13 Another signal timing diagram provided by an embodiment of the present invention;

[0028] Fig.14 Another signal timing diagram provided by an embodiment of the present invention;

[0029] Fig.15 Another signal timing diagram provided by an embodiment of the present invention;

[0030] Fig.16 Another signal timing diagram provided by an embodiment of the present invention;

[0031] Fig.17 Another signal timing diagram provided by an embodiment of the present invention;

[0032] Fig.18 for Figure 1 Schematic diagram of the enlarged structure of the middle S1 region;

[0033] Fig.19 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] Research has found that the touch signal in the touch electrode line in the non-display area of ​​the display panel is easily affected by the switching of the voltage signal in the detection signal line in the photosensitive module, generating touch noise and seriously affecting the touch function of the display panel.

[0037] Figure 1 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention, Figure 2 A schematic diagram of the structure of a light sensing module provided by an embodiment of the present invention, Figure 3 A signal timing diagram provided by an embodiment of the present invention, such as Figure 1 , Figure 2 and Figure 3 As shown, the display panel includes a light sensing module 101 and a touch electrode line 102. The light sensing module 101 includes a light sensing transistor 1011. A detection signal V1 is applied to the first electrode of the light sensing transistor 1011, and the light sensing transistor 1011 is configured to generate a photocurrent signal according to the detection signal V1 and light. The touch electrode line 102 is configured to transmit a touch signal. The touch signal may include a touch drive signal and / or a touch sensing signal. The touch drive signal is to transmit a touch current signal to the touch electrode (in the display area AA) in the display area AA. Figure 1 The touch sensing signal is a driving signal transmitted by the touch electrodes in the display area AA, and the touch sensing signal carries touch information.

[0038] The driving stage of the display panel includes a display stage V-display and a vertical intermittent stage V-porch. The display stage V-display and the vertical intermittent stage V-porch are arranged alternately, and a vertical intermittent stage V-porch is arranged between two adjacent display stages V-display. The display panel displays images in the display stage V-display, and does not display images in the vertical intermittent stage V-porch. The vertical intermittent stage V-porch includes a touch stage TP, and the display panel implements a touch function in the touch stage TP. In the touch stage TP, the touch electrode line 102 transmits a touch signal. In the period outside the touch stage TP, the touch electrode line 102 may not transmit a touch signal.

[0039] In multiple touch stages TP, the detection signal V1 has a first voltage. In a feasible embodiment, in all touch stages TP, the detection signal V1 has a first voltage. In another feasible embodiment, in a part of the touch stages TP, the detection signal V1 has a first voltage, and in another part of the touch stages TP, the detection signal V1 has a voltage value different from the first voltage. It can be understood that when the detection signal V1 has the first voltage in all touch stages TP, the effect of avoiding the detection signal V1 causing a voltage jump of the touch signal in the touch electrode line 102 is good, and the effect of reducing or even avoiding the generation of touch noise is good. In at least one display stage V-display, the detection signal V1 has a second voltage, and the second voltage is not equal to the first voltage. In a feasible embodiment, in at least one display stage V-display, the detection signal V1 has a voltage value other than the second voltage.

[0040] Among them, Figure 1 and Figure 2As shown, the display panel includes a photosensitive module 101, and the photosensitive module 101 is arranged in the non-display area NAA. The photosensitive module 101 is used to sense the ambient light of the outside world, and adjust the brightness change of the display panel according to the brightness change of the ambient light. The photosensitive module 101 includes a photosensitive transistor 1011, and the first electrode of the photosensitive transistor 1011 can be a source electrode, and the second electrode is a drain electrode. Alternatively, the first electrode of the photosensitive transistor 1011 can be a drain electrode, and the second electrode is a source electrode. The second electrode of the photosensitive transistor 1011 is used to output a photocurrent signal, and the gate of the photosensitive transistor 1011 is applied with a control signal V2. The control signal V2 is usually a fixed potential signal. Exemplarily, the control signal V2 can be 1.5V or a ground voltage. For example, the control signal V2 can be 0V~2V. The active layer of the photosensitive transistor 1011 includes a photosensitive material layer, so that part of the photosensitive transistor 1011 is configured to receive illumination from ambient light to generate a photocurrent signal. Some photosensitive transistors 1011 are configured to be in a dark state without ambient light and output a reference signal, so as to adjust the display brightness of the display panel according to the photocurrent signal and the reference signal.

[0041] The display panel is also provided with a touch electrode line 102, and the touch electrode line 102 transmits a touch signal to realize the touch function of the display panel. The driving stage of the display panel includes a display stage V-display and a vertical intermittent stage V-porch, that is, one frame is divided into a display stage V-display for displaying an image and a vertical intermittent stage V-porch for not displaying an image. In the current frame of the display panel, the end time of the display stage V-display in the current frame is taken as the start time, and the start time of the display stage V-display of the next frame is taken as the end time, and the time difference between the end time and the start time is taken as the duration of the vertical intermittent stage V-porch in the current frame. It should be noted that one frame mentioned here refers to the time period for refreshing an image. As Figure 1 As shown, in the non-display area NAA, some touch electrode lines 102 are close to the detection signal line 103 that transmits the detection signal V1. When the detection signal V1 undergoes a voltage jump in the detection signal line 103, coupling occurs between the detection signal line 103 and the touch electrode line 102, causing touch noise in the display panel. Usually, the touch stage TP is located in the vertical intermittent stage V-porch between adjacent display stages V-display. In multiple touch stages TP, the detection signal V1 has a first voltage, so that the detection signal V1 has the same voltage value in multiple touch stages TP, avoiding the voltage value of the detection signal V1 from switching back and forth in multiple touch stages TP. Therefore, in the touch stage TP, the touch signal transmitted by the touch electrode line 102 will not be affected by the voltage jump of the detection signal V1, reducing or even avoiding the noise generated by the touch signal.

[0042] For example, Figure 3 As shown, the first voltage of the detection signal V1 in multiple touch control stages TP is the gate control positive voltage VGH, and the second voltage of the partial display stage V-display is the gate control negative voltage VGL. The voltage value of the gate control positive voltage VGH is greater than 0, and the voltage value of the gate control negative voltage VGL is less than 0. The display panel includes a pixel driving circuit, and the pixel driving circuit includes a thin film transistor. The gate control positive voltage VGH and the gate control negative voltage VGL are applied to the gate of the thin film transistor and are configured to control the conduction or shutdown of the thin film transistor. For an N-type thin film transistor, the gate control positive voltage VGH is configured to control the conduction of the thin film transistor, and the gate control negative voltage VGL is configured to control the shutdown of the thin film transistor. For a P-type thin film transistor, the gate control positive voltage VGH is configured to control the shutdown of the thin film transistor, and the gate control negative voltage VGL is configured to control the conduction of the thin film transistor. The detection signal V1 in the display stage V-display of different frames can undergo voltage jumps. When the second voltage of the detection signal V1 in the display stage V-display is the gate control positive voltage VGH, the threshold voltage of the photosensitive transistor 1011 is positively shifted. When the second voltage of the detection signal V1 in the display stage V-display is the gate control negative voltage VGL, the threshold voltage of the photosensitive transistor 1011 is negatively shifted. The two work together to reduce the threshold voltage shift of the photosensitive transistor 1011 and ensure the stability of the photosensitive transistor 1011.

[0043] Figure 4 Another signal timing diagram provided by an embodiment of the present invention is as follows: Figure 4 As shown, in multiple touch stages TP, the first voltage of the detection signal V1 is the gate control positive voltage VGH. The second voltage of multiple display stages V-display is the gate control negative voltage VGL or the high impedance state Hiz. In multiple touch stages TP, the first voltage of the detection signal V1 remains consistent, and no voltage jump occurs. The touch signal transmitted by the touch electrode line 102 will not be affected by the voltage jump of the detection signal V1, reducing or even avoiding the touch signal from generating noise. In multiple display stages V-display, the second voltage of the detection signal V1 remains VGL or the high impedance state Hiz, instead of continuously setting the detection signal V1 to the gate control positive voltage VGH, so as to avoid the photosensitive transistor 1011 from continuously working in the same direction at different stages, or to avoid the photosensitive transistor 1011 from continuously applying the gate control positive voltage VGH to its first pole at different stages, so as to reduce the threshold voltage offset of the photosensitive transistor 1011.

[0044] Figure 5 Another signal timing diagram provided by an embodiment of the present invention is as follows: Figure 5As shown, the first voltage of the detection signal V1 in multiple touch stages TP is the gate control positive voltage VGH, and the second voltage of the detection signal V1 in multiple display stages V-display is the ground voltage GND. In multiple touch stages TP, the first voltage of the detection signal V1 remains consistent, and no voltage jump occurs. The touch signal transmitted by the touch electrode line 102 will not be affected by the voltage jump of the detection signal V1, reducing or even avoiding the generation of noise in the touch signal. In multiple display stages V-display, the second voltage of the detection signal V1 is the ground voltage GND, which prevents the photosensitive transistor 1011 from continuously applying the gate control positive voltage VGH to its first electrode at different stages, reducing the offset of the threshold voltage of the photosensitive transistor 1011.

[0045] Figure 6 Another signal timing diagram provided by an embodiment of the present invention, Figure 7 Another signal timing diagram provided by an embodiment of the present invention is as follows: Figure 6 and Figure 7 As shown, the first voltage of the detection signal V1 in multiple touch stages TP is the gate control positive voltage VGH, part of the second voltage of the detection signal V1 in the same display stage V-display is the gate control negative voltage VGL or the high impedance state Hiz and another part of the second voltage is the ground voltage GND, and the second voltage of the detection signal V1 jumps in the same display stage V-display, and the second voltage jumps in multiple display stages V-display in the same way, such as Figure 6 As shown, in the display phase V-display, the second voltage of the detection signal V1 is first maintained as the gate control negative voltage VGL or the high impedance state Hiz, and then the second voltage of the detection signal V1 is switched to the ground voltage GND. Figure 7 As shown, in the display stage V-display, the second voltage of the detection signal V1 is first maintained as the ground voltage GND, and then the second voltage of the detection signal V1 is switched to the gate control negative voltage VGL or the high impedance state Hiz. In multiple touch stages TP, the first voltage of the detection signal V1 remains consistent, and no voltage jump occurs. The touch signal transmitted by the touch electrode line 102 will not be affected by the voltage jump of the detection signal V1, reducing or even avoiding the touch signal from generating noise. In multiple display stages V-display, the second voltage of the detection signal V1 maintains the gate control negative voltage VGL or the high impedance state Hiz and the ground voltage GND, instead of continuously setting the detection signal V1 to the gate control positive voltage VGH, so as to avoid the photosensitive transistor 1011 from continuously operating in the same direction at different stages, or to avoid the photosensitive transistor 1011 from continuously applying the gate control positive voltage VGH to its first pole at different stages, so as to reduce the threshold voltage offset of the photosensitive transistor 1011.

[0046] In the display panel of the embodiment of the present invention, the first electrode of the photosensitive transistor 1011 of the photosensitive module 101 is applied with a detection signal V1, and then a photocurrent signal is generated in combination with light, so as to adjust the display brightness of the display panel under different ambient brightness. The driving stage of the display panel includes a display stage V-display and a vertical intermittent stage V-porch arranged alternately. The vertical intermittent stage V-porch includes a touch stage TP, and the detection signal V1 in multiple touch stages TP has the same first voltage, so as to avoid the voltage jump of the detection signal V1 from coupling the touch signal in the touch electrode line 102, and reduce or even avoid the generation of touch noise. The first voltage of the detection signal V1 in the touch stage TP is different from the second voltage of the detection signal V1 in at least one display stage V-display. There is a voltage jump in the detection signal V1 of different display stages V-display, which reduces or even avoids the threshold voltage offset of the photosensitive transistor 1011, ensures the stable operation of the photosensitive transistor 1011, and improves the accuracy of light sensing acquisition.

[0047] refer to Figure 3 , the vertical intermittent stage V-porch also includes a light detection stage ALS, and the light detection stage ALS is set in the vertical intermittent stage V-porch. In the light detection stage ALS, a photocurrent signal is obtained, and then the intensity of the ambient light is obtained according to the photocurrent signal, so as to adjust the brightness of the display panel according to the brightness of the ambient light. In the light detection stage ALS, the detection signal V1 has a first voltage. In the light detection stage ALS and the touch stage TP, the detection signal V1 has a first voltage, and the voltage value of the detection signal V1 remains unchanged. Photocurrent signal collection is performed in the vertical intermittent stage V-porch, and the brightness of the display panel is adjusted.

[0048] refer to Figure 3 , the light detection stage ALS overlaps with the touch stage TP. The light detection stage ALS and the touch stage TP include an overlapping period, during which both the photocurrent signal and the touch signal are collected. This can reduce the length of time occupied by the light detection stage ALS and the touch stage TP, reduce the length of time of the vertical intermittent stage V-porch, and increase the display frequency.

[0049] refer to Figure 3, the polarity of the first voltage is opposite to that of the second voltage. The first voltage is a voltage of positive polarity, that is, a positive voltage. The second voltage is a voltage of negative polarity, that is, a negative voltage. In other embodiments, the first voltage may be a voltage of negative polarity, and the second voltage may be a voltage of positive polarity. In multiple touch stages TP, the detection signal V1 maintains the same first voltage, reducing or even avoiding the voltage jump of the detection signal V1, affecting the touch noise generated by the touch signal in the touch electrode line 102. The detection signal V1 of the partial display stage V-display has a second voltage, so that the polarity of the second voltage is opposite to that of the first voltage. Exemplarily, the first voltage may be a positive voltage, and the second voltage may be a negative voltage; or, the first voltage may be a negative voltage, and the second voltage may be a positive voltage. The detection signal V1 in the adjacent display stage V-display undergoes a voltage jump, which effectively reduces the threshold voltage offset of the photosensitive transistor 1011, ensures the operating stability of the photosensitive transistor 1011, and improves the brightness adjustment accuracy of the display panel.

[0050] refer to Figure 3 , multiple display stages V-display include a first display stage V-display1 and a second display stage V-display2, and the first display stage V-display1 and the second display stage V-display2 are arranged alternately. In the first display stage V-display1, the detection signal V1 has a first voltage; in the second display stage V-display2, the detection signal V1 has a second voltage. When the detection signal V1 always keeps working in the same direction in the display stage V-display, it is easy to cause the threshold voltage of the photosensitive transistor 1011 to shift. The detection signal V1 is adjusted to switch the voltage in the adjacent display stage V-display. The first voltage of the detection signal V1 in the first display stage V-display1 is not equal to the second voltage of the detection signal V1 in the second display stage V-display2, thereby reducing the threshold voltage shift of the photosensitive transistor 1011 to improve the light sensing acquisition accuracy.

[0051] refer to Figure 3, the first voltage of the detection signal V1 of the photosensitive transistor 1011 in the first display stage V-display1 is the gate control positive voltage VGH, exemplarily 15V; the second voltage of the detection signal V1 in the second display stage V-display2 is the gate control negative voltage VGL, exemplarily -15V. The absolute values ​​of the first voltage and the second voltage are equal, so that the threshold voltage offset direction of the photosensitive transistor 1011 in the first display stage V-display1 is opposite to the threshold voltage offset direction of the photosensitive transistor 1011 in the second display stage V-display2. Combined with the alternating arrangement of the first display stage V-display1 and the second display stage V-display2, the threshold voltage of the photosensitive transistor 1011 remains stable, ensuring the acquisition accuracy of the photocurrent signal, thereby improving the brightness adjustment accuracy of the display panel.

[0052] Optional, reference Figure 3 , multiple display stages V-display include a first display stage V-display1 and a second display stage V-display2, multiple vertical intermittent stages V-porch include a first vertical intermittent stage V-porch1 and a second vertical intermittent stage V-porch2, and the first display stage V-display1, the first vertical intermittent stage V-porch1, the second display stage V-display2 and the second vertical intermittent stage V-porch2 are arranged in sequence. The voltage of the detection signal V1 in the first vertical intermittent stage V-porch1 is adjusted to be the same as the voltage of the detection signal V1 in the first display stage V-display1, and the second voltage of the detection signal V1 in the first display stage V-display1 is equal to the first voltage of the detection signal V1 in the first vertical intermittent stage V-porch1. The second voltage of the detection signal V1 in the second display stage V-display2 is not equal to the first voltage of the detection signal V1 in the second vertical intermittent stage V-porch2. In the light detection stage ALS in the first vertical intermittent stage V-porch1, the photocurrent signal is collected. The detection signal V1 of the light detection stage ALS is the gate control positive voltage VGH, which is convenient for the driver chip to collect and identify the photocurrent signal generated by the photosensitive transistor 1011, and at the same time, the photocurrent signal is collected by skipping frames to ensure the uniformity of light sensing collection and improve the brightness adjustment accuracy of the display panel.

[0053] Figure 8 Another signal timing diagram provided by an embodiment of the present invention is as follows: Figure 8As shown, the light detection stage ALS is set in the vertical intermittent stage V-porch. In the light detection stage ALS, a photocurrent signal is obtained, and then the intensity of the ambient light is obtained according to the photocurrent signal, so as to adjust the brightness of the display panel according to the brightness of the ambient light. In the light detection stage ALS, the detection signal V1 has a second voltage. Exemplarily, in the touch stage TP, the first voltage of the detection signal V1 is the ground voltage GND; in the light detection stage ALS, the second voltage of the detection signal V1 is the gate control positive voltage VGH, so that the touch stage TP in the vertical intermittent stage V-porch does not overlap with the light detection stage ALS, and is distributed in two independent time periods to ensure the touch effect. In multiple touch stages TP, the detection signal V1 has a first voltage to avoid voltage adjustment of the detection signal V1 and generate touch noise. In the light detection stage ALS in the vertical intermittent stage V-porch, the photocurrent signal is collected and the brightness of the display panel is adjusted. The time length of the driving stage of multiple display panels can also be adjusted to be consistent to ensure the display effect.

[0054] refer to Figure 8 , the multiple display stages V-display include a first display stage V-display1 and a second display stage V-display2, the first display stage V-display1 and the second display stage V-display2 are arranged alternately; in the first display stage V-display1, the detection signal V1 has a second voltage; in the second display stage V-display2, the detection signal V1 has a third voltage, and the first voltage, the second voltage and the third voltage are not equal. For example, Figure 8 As shown, the first voltage is the ground voltage GND, the second voltage is the gate control positive voltage VGH, and the third voltage is the gate control negative voltage VGL. In the adjacent display stage V-display, the detection signal V1 undergoes a voltage jump to prevent the photosensitive transistor 1011 from continuously applying the gate control positive voltage VGH to its first electrode in different stages, thereby reducing the threshold voltage offset of the photosensitive transistor 1011. In the touch stage TP of the vertical intermittent stage V-porch, the detection signal V1 has a first voltage and does not undergo a voltage jump. The touch signal transmitted by the touch electrode line 102 will not be affected by the voltage jump of the detection signal V1, thereby reducing or even avoiding the generation of noise in the touch signal.

[0055] refer to Figure 8, the second voltage is greater than the third voltage; the absolute values ​​of the second voltage and the third voltage are equal, and the polarities of the second voltage and the third voltage are opposite; or, the third voltage is in the high impedance state Hiz. In the adjacent display stage V-display, the voltage of the detection signal V1 needs to jump. Currently, to achieve voltage switching, the pin of the driver chip needs to output. The driver chip can output the gate control positive voltage VGH, the gate control negative voltage VGL, the ground voltage GND and the high impedance state Hiz.

[0056] For example, Figure 8 As shown, the first voltage is the ground voltage GND, the second voltage is the gate control positive voltage VGH, and the third voltage is the gate control negative voltage VGL. In the adjacent first display stage V-display1 and second display stage V-display2, the detection signal V1 performs voltage switching, and the second voltage of the detection signal V1 in the first display stage V-display1 is equal to the absolute value of the third voltage of the detection signal V1 in the second display stage V-display2, and the second voltage has the opposite polarity to the third voltage. The detection signal V1 in the first display stage V-display1 causes the threshold voltage of the photosensitive transistor 1011 to shift positively, and the detection signal V1 in the second display stage V-display2 causes the threshold voltage of the photosensitive transistor 1011 to shift negatively, and the two work together to reduce the threshold voltage shift of the photosensitive transistor 1011 and ensure the stability of the photosensitive transistor 1011.

[0057] Fig. 9 Another signal timing diagram provided by an embodiment of the present invention is as follows: Fig. 9 As shown, the reference second voltage is greater than the third voltage; the third voltage is in the high impedance state Hiz. Exemplarily, the first voltage is the ground voltage GND, the second voltage is the gate control positive voltage VGH, and the third voltage is in the high impedance state Hiz. In the adjacent first display stage V-display1 and second display stage V-display2, the detection signal V1 undergoes voltage switching, and the second voltage of the detection signal V1 in the first display stage V-display1 is not equal to the third voltage of the detection signal V1 in the second display stage V-display2. In the second display stage V-display2, the second voltage of the detection signal V1 remains in the high impedance state Hiz, instead of continuously setting the detection signal V1 to the gate control positive voltage VGH, so as to avoid the photosensitive transistor 1011 from continuously applying the gate control positive voltage VGH to its first pole at different stages, thereby reducing the offset of the threshold voltage of the photosensitive transistor 1011.

[0058] refer to Figure 8, the multiple vertical intermittent stages V-porch include a first vertical intermittent stage V-porch1 and a second vertical intermittent stage V-porch2, the first display stage V-display1, the first vertical intermittent stage V-porch1, the second display stage V-display2 and the second vertical intermittent stage V-porch2 are arranged in sequence; in the first vertical intermittent stage V-porch1, the detection signal V1 has a second voltage, and in the second vertical intermittent stage V-porch2, the detection signal V1 has a third voltage. The voltage of the detection signal V1 in the first vertical intermittent stage V-porch1 is the same as the voltage of the detection signal V1 in the first display stage V-display1, and the voltage of the detection signal V1 in the second vertical intermittent stage V-porch2 is the same as the voltage of the detection signal V1 in the second display stage V-display2. Exemplarily, the second voltage is the gate-controlled positive voltage VGH, and the third voltage is the gate-controlled negative voltage VGL, so that the occupation time of the gate-controlled positive voltage VGH is the same as the occupation time of the gate-controlled negative voltage VGL, the gate-controlled positive voltage VGH causes the threshold voltage of the photosensitive transistor 1011 to shift toward the positive direction, and the gate-controlled negative voltage VGL causes the threshold voltage of the photosensitive transistor 1011 to shift toward the negative direction, and the gate-controlled positive voltage VGH and the gate-controlled negative voltage VGL have opposite effects on the threshold voltage shift of the photosensitive transistor 1011. When the durations of the two are equal, the threshold voltage shift of the photosensitive transistor 1011 is reduced or even avoided, thereby ensuring the stability of the photosensitive transistor 1011.

[0059] refer to Figure 8 , the light detection stage ALS in the first vertical intermittent stage V-porch1 is located between the touch stage TP and the first display stage V-display1 in the first vertical intermittent stage V-porch1; the detection signal V1 of the first display stage V-display1 and the light detection stage ALS both maintain the second voltage, and after the first display stage V-display1 is completed, it can directly enter the light detection stage ALS, reducing the number of voltage jumps of the detection signal V1 and reducing the operation difficulty of the driving chip.

[0060] Fig.10 Another signal timing diagram provided by an embodiment of the present invention is as follows: Fig.10 As shown, the light detection stage ALS in the second vertical intermittent stage V-porch2 is located between the touch stage TP in the second vertical intermittent stage V-porch2 and the second display stage V-display2. After the first display stage V-display1 is completed, the touch stage TP is entered, and the voltage of the detection signal V1 is switched to prevent the photosensitive transistor 1011 from continuously working in the same direction in different stages, thereby reducing the offset of the threshold voltage of the photosensitive transistor 1011.

[0061] Continue to refer Figure 8 and Fig. 9 , in the touch stage TP, a first voltage is applied to the first electrode of the photosensitive transistor 1011. The first voltage is the ground voltage GND, which will not cause an offset to the threshold voltage of the photosensitive transistor 1011, thereby ensuring the stability of the photosensitive transistor 1011. The first voltage of the detection signal V1 in the touch stage TP remains unchanged, and the touch signal transmitted by the touch electrode line 102 is not affected by the voltage switching of the detection signal V1, thereby reducing or even avoiding touch noise. The second voltage of the detection signal V1 in the first display stage V-display1 is the gate control positive voltage VGH, and the second voltage of the detection signal V1 in the light detection stage ALS of the first vertical intermittent stage V-porch1 is the gate control positive voltage VGH. The second voltage of the detection signal V1 in the second display stage V-display2 is the gate control negative voltage VGL, and the second voltage of the detection signal V1 in the light detection stage ALS of the second vertical intermittent stage V-porch2 is the gate control negative voltage VGL. In the display stage V-display and the light detection stage ALS can reverse the voltage frame by frame, so that the occupation time of the gate control positive voltage VGH and the gate control negative voltage VGL are equal. When the two durations are equal, the threshold voltage offset of the photosensitive transistor 1011 is reduced or even avoided, thereby ensuring the stability of the photosensitive transistor 1011.

[0062] Fig.11 Another signal timing diagram provided by an embodiment of the present invention is as follows: Fig.11 As shown, the multiple display stages V-display include a third display stage V-display3 and a fourth display stage V-display4, and at least two fourth display stages V-display4 are set between adjacent third display stages V-display3; in the third display stage V-display3, the detection signal V1 has a first voltage; in the vertical intermittent stage V-porch with the shortest interval time with the third display stage V-display3, the photocurrent signal is collected. Exemplarily, three fourth display stages V-display4 are set between adjacent third display stages V-display3, and the voltage of the detection signal V1 in the third display stage V-display3 is different from the voltage of the detection signal V1 in the fourth display stage V-display4, so as to avoid the photosensitive transistor 1011 from continuously working in the same direction in different stages and reduce the offset of the threshold voltage of the photosensitive transistor 1011.

[0063] The vertical intermittent stage V-porch includes a third vertical intermittent stage V-porch3 located between the third display stage V-display3 and the fourth display stage V-display4 and a fourth vertical intermittent stage V-porch4 located between the adjacent fourth display stage V-display4, and the duration of the third vertical intermittent stage V-porch3 is shorter than the duration of the fourth vertical intermittent stage V-porch4. The light detection stage ALS in the third vertical intermittent stage V-porch3 collects photocurrent signals, and the light detection stage ALS in the fourth vertical intermittent stage V-porch4 does not collect photocurrent signals, thereby reducing the frequency of light signal collection, thereby reducing the influence of the detection signal V1 on the touch signal in the touch electrode line 102, and ensuring the touch effect.

[0064] Fig.12 Another signal timing diagram provided by an embodiment of the present invention is as follows: Fig.12 As shown, multiple display stages V-display include a first display stage group V-displayA and a second display stage group V-displayB, and the first display stage group V-displayA and the second display stage group V-displayB are arranged alternately; the first display stage group V-displayA includes at least two fifth display stages V-display5, and the second display stage group V-displayB includes at least two sixth display stages V-display6; in the fifth display stage V-display5, the detection signal V1 has a first voltage; in the vertical intermittent stage V-porch with the shortest interval time with the fifth display stage V-display5, the photocurrent signal is collected. Exemplarily, the first display stage group V-displayA includes two fifth display stages V-display5, and the second display stage group V-displayB includes three sixth display stages V-display6. The voltage of the detection signal V1 in the fifth display stage V-display5 is different from the voltage of the detection signal V1 in the sixth display stage V-display6, thereby preventing the photosensitive transistor 1011 from continuously working in the same direction in different stages and reducing the offset of the threshold voltage of the photosensitive transistor 1011.

[0065] The vertical intermittent stage V-porch includes a fifth vertical intermittent stage V-porch5 located between the adjacent fifth display stage V-display5 and a sixth vertical intermittent stage V-porch6 located between the adjacent sixth display stage V-display6. The duration of the fifth vertical intermittent stage V-porch5 is shorter than that of the sixth vertical intermittent stage V-porch6. The light detection stage ALS in the fifth vertical intermittent stage V-porch5 performs photocurrent signal acquisition, and does not perform photocurrent signal acquisition in the sixth vertical intermittent stage V-porch6. Two frames are continuously acquired, and three frames are stopped to reduce the frequency of light signal acquisition, thereby reducing the influence of the detection signal V1 on the touch signal in the touch electrode line 102, and ensuring the touch effect. The ratio of the continuous acquisition time of the photocurrent signal to the stop acquisition time of the photocurrent signal can be 1:1, 1:2, 1:3, 2:3, 3:9 and other different ratios, and the photocurrent signal acquisition frequency is adjusted to ensure the touch performance.

[0066] refer to Figure 1 , Figure 2 and Figure 8 , the photosensitive module 101 includes a photosensitive transistor 1011, a detection signal V1 is applied to the first electrode of the photosensitive transistor 1011, and the photosensitive transistor 1011 is configured to generate a photocurrent signal according to the detection signal V1 and light; the touch electrode line 102 is configured to transmit a touch signal; the driving stage of the display panel includes a display stage V-display and a vertical intermittent stage V-porch, the display stage V-display and the vertical intermittent stage V-porch are arranged alternately, and the vertical intermittent stage V-porch includes a touch stage TP and a light detection stage ALS; the touch stage TP and the light detection stage ALS do not overlap, in a feasible embodiment, in all touch stages TP, the detection signal V1 has a first voltage. In another feasible embodiment, in a part of the number of touch stages TP, the detection signal V1 has a first voltage, and in another part of the number of touch stages TP, the detection signal V1 has a voltage value different from the first voltage. It is understandable that, in all touch stages TP, when the detection signal V1 has the first voltage, it is effective to avoid the detection signal V1 causing a voltage jump of the touch signal in the touch electrode line 102, and it is effective to reduce or even avoid the generation of touch noise. In at least one light detection stage ALS, the detection signal V1 has a second voltage, and the second voltage is not equal to the first voltage. In a feasible embodiment, in at least one light detection stage ALS, the detection signal V1 has a voltage value other than the second voltage.

[0067] For example, Figure 8As shown, the first voltage of the detection signal V1 in multiple touch stages TP is the ground voltage GND, and the second voltage of some light detection stages ALS is the gate control negative voltage VGL. The detection signal V1 in the light detection stages ALS of different frames can undergo voltage jumps. When the second voltage of the detection signal V1 in the light detection stage ALS is the gate control positive voltage VGH, the threshold voltage of the photosensitive transistor 1011 is positively shifted. When the second voltage of the detection signal V1 in the light detection stage ALS is the gate control negative voltage VGL, the threshold voltage of the photosensitive transistor 1011 is negatively shifted. The combined effect of the two reduces the threshold voltage shift of the photosensitive transistor 1011 and ensures the stability of the photosensitive transistor 1011.

[0068] Fig.13 Another signal timing diagram provided by an embodiment of the present invention is as follows: Fig.13 As shown, the first voltage of the detection signal V1 in multiple touch stages TP is the ground voltage GND. In multiple touch stages TP, the first voltage of the detection signal V1 remains consistent without voltage jump. The touch signal transmitted by the touch electrode line 102 will not be affected by the voltage jump of the detection signal V1, thereby reducing or even avoiding the generation of noise in the touch signal. The first voltage of the detection signal V1 in the touch stage TP is the ground voltage GND, which will not cause an offset to the threshold voltage of the photosensitive transistor 1011.

[0069] The second voltage of the detection signal V1 of the ALS in the partial light detection stage is the gate control positive voltage VGH, and the second voltage of the detection signal V1 of the ALS in the partial light detection stage is the gate control negative voltage VGL. When the second voltage of the detection signal V1 of the ALS in the light detection stage is the gate control positive voltage VGH, the threshold voltage of the photosensitive transistor 1011 is shifted to the positive direction; when the second voltage of the detection signal V1 of the ALS in the light detection stage is the gate control negative voltage VGL, the threshold voltage of the photosensitive transistor 1011 is shifted to the negative direction, effectively reducing the threshold voltage offset of the photosensitive transistor 1011, ensuring the operating stability of the photosensitive transistor 1011, and improving the brightness adjustment accuracy of the display panel. It is also possible to use frame skipping acquisition for the photocurrent signal to reduce the acquisition frequency of the photocurrent signal, and further reduce the impact on the touch signal.

[0070] Fig.14 Another signal timing diagram provided by an embodiment of the present invention is as follows: Fig.14 As shown, the first voltage of the detection signal V1 in multiple touch stages TP is the gate control positive voltage VGH. In multiple touch stages TP, the first voltage of the detection signal V1 remains consistent without voltage jump. The touch signal transmitted by the touch electrode line 102 will not be affected by the voltage jump of the detection signal V1, thereby reducing or even avoiding the generation of noise in the touch signal.

[0071] The second voltage of the detection signal V1 of the partial light detection stage ALS is the gate control positive voltage VGH, and the second voltage of the detection signal V1 of the partial light detection stage ALS is the gate control negative voltage VGL. When the second voltage of the detection signal V1 of the light detection stage ALS is the gate control positive voltage VGH, the threshold voltage of the photosensitive transistor 1011 is shifted to the positive direction; when the second voltage of the detection signal V1 of the light detection stage ALS is the gate control negative voltage VGL, the threshold voltage of the photosensitive transistor 1011 is shifted to the negative direction, which effectively reduces the threshold voltage shift of the photosensitive transistor 1011, ensures the operation stability of the photosensitive transistor 1011, and improves the brightness adjustment accuracy of the display panel. The display stage V-display is consistent with the voltage of the detection signal V1 in the adjacent light detection stage ALS, which reduces the number of voltage jumps and reduces the operation difficulty of the driver chip.

[0072] The display panel includes a pixel driving circuit, and the pixel driving circuit includes a thin film transistor. A gate control positive voltage VGH and a gate control negative voltage VGL are applied to the gate of the thin film transistor, and are configured to control the conduction or shutdown of the thin film transistor. For an N-type thin film transistor, the gate control positive voltage VGH is configured to control the conduction of the thin film transistor, and the gate control negative voltage VGL is configured to control the shutdown of the thin film transistor. For a P-type thin film transistor, the gate control positive voltage VGH is configured to control the shutdown of the thin film transistor, and the gate control negative voltage VGL is configured to control the conduction of the thin film transistor. The detection signal V1 in the light detection stage ALS of different frames can undergo voltage jumps. When the second voltage of the detection signal V1 of the light detection stage ALS is the gate control positive voltage VGH, the threshold voltage of the photosensitive transistor 1011 is positively shifted. When the second voltage of the detection signal V1 of the light detection stage ALS is the gate control negative voltage VGL, the threshold voltage of the photosensitive transistor 1011 is negatively shifted, and the two work together to reduce the threshold voltage shift of the photosensitive transistor 1011 and ensure the stability of the photosensitive transistor 1011.

[0073] In the display panel of the embodiment of the present invention, the first electrode of the photosensitive transistor 1011 of the photosensitive module 101 is applied with a detection signal V1, and then a photocurrent signal is generated in combination with light, so as to adjust the display brightness of the display panel under different ambient brightness. The driving stage of the display panel includes an alternating display stage V-display and a vertical intermittent stage V-porch. The vertical intermittent stage V-porch includes a touch stage TP, and the detection signal V1 in multiple touch stages TP has the same first voltage, so as to avoid the voltage jump of the detection signal V1 from coupling the touch signal in the touch electrode line 102, and reduce or even avoid the generation of touch noise. The first voltage of the detection signal V1 in the touch stage TP is different from the second voltage of the detection signal V1 in at least one light detection stage ALS, and the detection signal V1 in different light detection stages ALS has a voltage jump, so as to reduce or even avoid the threshold voltage offset of the photosensitive transistor 1011, ensure the stable operation of the photosensitive transistor 1011, and improve the accuracy of light sensing acquisition.

[0074] Fig.15 Another signal timing diagram provided by an embodiment of the present invention is as follows: Fig.15 As shown, in the display stage V-display, the detection signal V1 has a first voltage. The voltage of the detection signal V1 in the display stage V-display is equal to the voltage of the detection signal V1 in the touch stage TP. Exemplarily, the first voltage is output to the photo transistor 1011 in both the display stage V-display and the touch stage TP. The first voltage is the ground voltage GND, which will not cause an offset to the threshold voltage of the photo transistor 1011, thereby ensuring the stability of the photo transistor 1011.

[0075] In the partial display stage, the detection signal V1 in V-display can also perform voltage switching. Fig.16 Another signal timing diagram provided by an embodiment of the present invention, Fig.17 Another signal timing diagram provided by an embodiment of the present invention is as follows: Fig.16 As shown, the first voltage of the detection signal V1 in the multiple touch control stages TP is the gate control positive voltage VGH, or Fig.17 As shown, in multiple touch stages TP, the first voltage of the detection signal V1 is the gate control negative voltage VGL. In multiple touch stages TP, the first voltage of the detection signal V1 remains consistent without voltage jump. The touch signal transmitted by the touch electrode line 102 will not be affected by the voltage jump of the detection signal V1, reducing or even avoiding the noise generated by the touch signal. The driving stage of the display panel includes a positive frame and a negative frame. The time when the voltage of the detection signal V1 in the positive frame is the gate control positive voltage VGH is equal to the time when the voltage of the detection signal V1 in the negative frame is the gate control negative voltage VGL, so that the time length of the driving stage of different display panels is consistent, ensuring the display effect.

[0076] refer to Fig.13 , the multiple vertical intermittent stages V-porch include a first vertical intermittent stage V-porch1 and a second vertical intermittent stage V-porch2, the first vertical intermittent stage V-porch1 and the second vertical intermittent stage V-porch2 are arranged alternately; in the light detection stage ALS in the first vertical intermittent stage V-porch1, the detection signal V1 has a second voltage; in the light detection stage ALS in the second vertical intermittent stage V-porch2, the detection signal V1 has a third voltage; the absolute values ​​of the second voltage and the third voltage are equal, and the polarities of the second voltage and the third voltage are opposite. When the detection signal V1 in the vertical intermittent stage V-porch always keeps working in the same direction, it is easy to cause the threshold voltage of the photosensitive transistor 1011 to shift, and the detection signal V1 of the light detection stage ALS in the adjacent vertical intermittent stage V-porch is adjusted to switch the voltage, the second voltage of the detection signal V1 of the light detection stage ALS in the first vertical intermittent stage V-porch1 is not equal to the third voltage of the detection signal V1 of the light detection stage ALS in the second vertical intermittent stage V-porch2, and the absolute values ​​of the second voltage and the third voltage are equal. The second voltage is a gate control positive voltage VGH, and the third voltage is a gate control negative voltage VGL. In the first vertical intermittent stage V-porch1, the second voltage of the detection signal V1 of the light detection stage ALS is the gate control positive voltage VGH, which causes the threshold voltage of the photosensitive transistor 1011 to shift toward the positive direction. In the second vertical intermittent stage V-porch2, the third voltage of the detection signal V1 of the light detection stage ALS is the gate control negative voltage VGL, which causes the threshold voltage of the photosensitive transistor 1011 to shift toward the negative direction. The second voltage and the third voltage work together to reduce or even avoid the threshold voltage shift of the photosensitive transistor 1011, thereby ensuring the stability of the photosensitive transistor 1011.

[0077] refer to Figure 1 The display panel also includes a detection signal line 103, which is located in the non-display area NAA. The detection signal line 103 is electrically connected to the first electrode of the photosensitive transistor 1011. The detection signal line 103 transmits a detection signal V1 to the photosensitive transistor 1011. The photosensitive transistor 1011 generates a photocurrent signal according to the detection signal V1 and light, and then adjusts the brightness of the display panel according to the photocurrent signal.

[0078] Fig.18 for Figure 1 Schematic diagram of the enlarged structure of the S1 region, see Figure 1 and Fig.18The display panel includes a display area AA and a bottom non-display area NAA1, the bottom non-display area NAA1 is located on one side of the display area AA; at least part of the detection signal line 103 is located in the bottom non-display area NAA1, and at least part of the touch electrode line 102 is located in the bottom non-display area NAA1. The display panel also includes a top non-display area NAA2, the top non-display area NAA2 and the bottom non-display area NAA1 are located on opposite sides of the display area AA. The touch electrode line 102 extends from the bottom non-display area NAA1 to the display area AA, and the touch electrode line 102 is connected to the touch electrode ( Figure 1 At least part of the detection signal line 103 is located in the bottom non-display area NAA1 and extends from the bottom non-display area NAA1 to the top non-display area NAA2. One end of the touch electrode line 102 is away from the bottom non-display area NAA1 and is adjacent to the detection signal line 103 in the top non-display area NAA2. Fig.18 For the S2 area shown in . Since the distance between the detection signal line 103 and the touch electrode line 102 is relatively close, when the detection signal V1 undergoes a voltage jump in the detection signal line 103, coupling will occur between the detection signal line 103 and the touch electrode line 102, causing touch noise in the display panel. Adjust the detection signal V1 to have the same voltage value within the touch stage TP to avoid switching the voltage value of the detection signal V1 back and forth within multiple touch stages TP. Therefore, in the touch stage TP, the touch signal transmitted by the touch electrode line 102 will not be affected by the voltage jump of the detection signal V1, reducing or even avoiding the noise generated by the touch signal.

[0079] For example, reference Figure 1 and Fig.18 , the bottom non-display area NAA1 points in the direction of the top non-display area NAA2, which is consistent with the extension direction of the touch electrode line 102 in the display area AA. The display panel also includes a common electrode line Com, and the common electrode line Com is configured to provide a common voltage, and the common voltage may include 0V, for example. In other embodiments, the common voltage may also have other values. At least a portion of the common electrode line Com is located in the top non-display area NAA2. At least a portion of the detection signal line 103 is located in the top non-display area NAA2. The detection signal line 103 and the touch electrode line 102 are arranged in the same layer, and thus, coupling phenomenon is likely to occur between the detection signal line 103 and the touch electrode line 102 arranged in the same layer, which is particularly suitable for the solution of "avoiding switching back and forth of the voltage value of the detection signal V1 in multiple touch stages TP" provided in an embodiment of the present invention.

[0080] For example, reference Figure 1 and Fig.18The display panel includes a pixel driving circuit, and the pixel driving circuit includes a thin film transistor. At least part of the common electrode line Com is arranged in the same layer as the gate of the thin film transistor. The detection signal line 103, the touch electrode line 102 and the source and drain of the thin film transistor are arranged in the same layer.

[0081] refer to Figure 1 The display panel further includes a top non-display area NAA2, which is located on opposite sides of the display area AA with the bottom non-display area NAA1; the light sensing module 101 is located in the top non-display area NAA2. The light sensing module 101 is used to sense the external ambient light, and generate a photocurrent signal in combination with the detection signal V1 output by the detection signal line 103, so as to accurately adjust the brightness of the display panel according to different ambient brightness.

[0082] refer to Figure 1 The display panel further includes a side non-display area NAA3, and the side non-display area NAA3 connects the top non-display area NAA2 and the bottom non-display area NAA1; at least part of the detection signal line 103 is located in the side non-display area NAA3. The detection signal line 103 extends through the bottom non-display area NAA1 and the side non-display area NAA3 to the top non-display area NAA2, and is connected to the light sensing module 101 in the top non-display area NAA2.

[0083] refer to Figure 1 and Figure 2 The display panel also includes a first detection output signal line Vout1 and at least three second detection output signal lines, the second detection output signal line includes a first sub-second detection output signal line Vout2, a second sub-second detection output signal line Vout3 and a third sub-second detection output signal line Vout4; the display panel also includes detection resistors, the first detection output signal line Vout1 is electrically connected to the first detection resistor R1, the first sub-second detection output signal line Vout2 is electrically connected to the second detection resistor R2, the second sub-second detection output signal line Vout3 is electrically connected to the third detection resistor R3 and the third sub-second detection output signal line Vout4 is electrically connected to the fourth detection resistor R4, and the resistance of the detection resistors can be adjusted to achieve the voltage values ​​of the photocurrent signal and the reference signal reaching the detection range of the driving chip.

[0084] The photosensitive module 101 includes a plurality of first photosensitive transistors 11 and three second photosensitive transistors 12 connected in parallel. The first photosensitive transistors 11 and the second photosensitive transistors 12 can be formed in the same process as the thin film transistors of the pixel driving circuit in the display panel, saving the manufacturing cost.

[0085] The detection signal line 103 is connected to the first electrode of the first photosensitive transistor 11 and the first electrode of the second photosensitive transistor 12. The second electrode of the first photosensitive transistor 11 is electrically connected to the first detection output signal line Vout1, and the second electrode of the second photosensitive transistor 12 is electrically connected to the second detection output signal line. A control signal is applied to the gate of the first photosensitive transistor 11 and the gate of the second photosensitive transistor 12, and the control signal is usually a fixed potential signal. The active layer of the photosensitive transistor 1011 includes a photosensitive material layer, and the shading element 1012 shields the photosensitive material layer of the first photosensitive transistor 11. The first photosensitive transistor 11 is not affected by the external ambient light. After the first electrode of the first photosensitive transistor 11 receives the detection signal V1 output by the detection signal line 103, a leakage current is generated, which is a reference signal, and is output in sequence through the second electrode of the first photosensitive transistor 11 and the first detection output signal line.

[0086] The active layer of the second photosensitive transistor 12 is not blocked by the shading element 1012. The active layer of the second photosensitive transistor 12 receives the irradiation of ambient light and, in combination with the first electrode of the first photosensitive transistor 11, receives the detection signal V1 output by the detection signal line 103 to generate a photocurrent signal, which is then outputted through the second electrode of the second photosensitive transistor 12 and the second detection output signal in sequence.

[0087] The display panel may further include a brightness control module (not shown in the figure), which is arranged in the non-display area NAA1 at the bottom edge of the display panel. The brightness control module may be arranged in a driving chip, and the brightness control module is electrically connected to the first detection output signal line and the second detection output signal line, respectively, for comparing the reference signal and the photocurrent signal to obtain the photocurrent generated by the second photosensitive transistor 12 simply when it is irradiated by ambient light, and the actual brightness of the ambient light is obtained based on the photocurrent, thereby improving the precise adjustment of the brightness of the display panel.

[0088] Fig.19 A schematic diagram of a display device according to an embodiment of the present invention is shown in FIG. Fig.19 As shown, the display device 200 includes the display panel 100 described in the above embodiment.

[0089] It should be noted that since the display device provided in this embodiment has the same or corresponding beneficial effects as the display panel in the above embodiment, no further description is given here. The display device 200 provided in the embodiment of the present invention can be Fig.19 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiments of the present invention do not specifically limit this.

[0090] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A display panel, characterized in that: The invention comprises a light sensing module and a touch electrode line, wherein the light sensing module comprises a light sensing transistor, a detection signal is applied to a first electrode of the light sensing transistor, and the light sensing transistor is configured to generate a photocurrent signal according to the detection signal and light; and the touch electrode line is configured to transmit a touch signal; The driving stage of the display panel includes a display stage and a vertical intermittent stage, the display stage and the vertical intermittent stage are arranged alternately, and the vertical intermittent stage includes a touch stage; In a plurality of the touch control stages, the detection signal has a first voltage; in at least one of the display stages, the detection signal has a second voltage, and the second voltage is not equal to the first voltage.

2. The display panel according to claim 1, characterized in that: The vertical intermittent phase further includes a light detection phase, during which the detection signal has the first voltage.

3. The display panel according to claim 2, characterized in that: The light detection phase overlaps with the touch control phase.

4. The display panel according to claim 1, characterized in that: The first voltage and the second voltage have opposite polarities.

5. The display panel according to claim 4, characterized in that: The plurality of display stages include a first display stage and a second display stage, wherein the first display stage and the second display stage are arranged alternately; In the first display stage, the detection signal has the first voltage; in the second display stage, the detection signal has the second voltage.

6. The display panel according to claim 5, characterized in that: The absolute values ​​of the first voltage and the second voltage are equal.

7. The display panel according to claim 1, characterized in that: The plurality of display stages include a first display stage and a second display stage, the plurality of vertical intermittent stages include a first vertical intermittent stage and a second vertical intermittent stage, and the first display stage, the first vertical intermittent stage, the second display stage and the second vertical intermittent stage are arranged in sequence; The voltage of the detection signal in the first vertical intermittent stage is the same as the voltage of the detection signal in the first display stage, and the photocurrent signal is collected in the first vertical intermittent stage.

8. The display panel according to claim 1, characterized in that: The vertical intermittent stage also includes a light detection stage; In at least one of the light detection phases, the detection signal has the second voltage.

9. The display panel according to claim 8, characterized in that: The plurality of display stages include a first display stage and a second display stage, wherein the first display stage and the second display stage are arranged alternately; In the first display stage, the detection signal has the second voltage; in the second display stage, the detection signal has a third voltage, and the first voltage, the second voltage and the third voltage are not equal.

10. The display panel according to claim 9, characterized in that: The second voltage is greater than the third voltage; The absolute values ​​of the second voltage and the third voltage are equal, and the polarities of the second voltage and the third voltage are opposite; or, the third voltage is in a high impedance state.

11. The display panel according to claim 10, characterized in that: The plurality of vertical intermittent stages include a first vertical intermittent stage and a second vertical intermittent stage, wherein the first display stage, the first vertical intermittent stage, the second display stage and the second vertical intermittent stage are arranged in sequence; In the first vertical intermittent stage, the detection signal has the second voltage, and in the second vertical intermittent stage, the detection signal has the third voltage.

12. The display panel according to claim 11, characterized in that: The light detection stage in the first vertical intermittent stage is located between the touch control stage and the first display stage in the first vertical intermittent stage; The light detection phase in the second vertical interval phase is located between the touch control phase and the second display phase in the second vertical interval phase.

13. The display panel according to claim 1, characterized in that: The first voltage is a ground voltage.

14. The display panel according to claim 1, characterized in that: The plurality of display stages include a third display stage and a fourth display stage, and at least two fourth display stages are arranged between adjacent third display stages; In the third display stage, the detection signal has the first voltage; and in the vertical intermittent stage having the shortest interval time with the third display stage, the photocurrent signal is collected.

15. The display panel according to claim 1, characterized in that: The plurality of display stages include a first display stage group and a second display stage group, wherein the first display stage group and the second display stage group are arranged alternately; The first display stage group includes at least two fifth display stages, and the second display stage group includes at least two sixth display stages; In the fifth display stage, the detection signal has the first voltage; and in the vertical intermittent stage having the shortest interval time with the fifth display stage, the photocurrent signal is collected.

16. A display panel, characterized in that: The invention comprises a light sensing module and a touch electrode line, wherein the light sensing module comprises a light sensing transistor, a detection signal is applied to a first electrode of the light sensing transistor, and the light sensing transistor is configured to generate a photocurrent signal according to the detection signal and light; and the touch electrode line is configured to transmit a touch signal; The driving stage of the display panel includes a display stage and a vertical intermittent stage, the display stage and the vertical intermittent stage are arranged alternately, and the vertical intermittent stage includes a touch stage and a light detection stage; In a plurality of the touch detection stages, the detection signal has a first voltage; in at least one of the light detection stages, the detection signal has a second voltage, and the second voltage is not equal to the first voltage.

17. The display panel according to claim 16, characterized in that: In the display phase, the detection signal has the first voltage.

18. The display panel according to claim 17, characterized in that: The plurality of vertical intermittent stages include a first vertical intermittent stage and a second vertical intermittent stage, and the first vertical intermittent stage and the second vertical intermittent stage are arranged alternately; In the light detection phase within the first vertical intermittent phase, the detection signal has the second voltage; in the light detection phase within the second vertical intermittent phase, the detection signal has a third voltage; The second voltage and the third voltage have the same absolute value, and the second voltage and the third voltage have opposite polarities.

19. The display panel according to claim 1 or 16, characterized in that: including thin film transistors; At least one of the first voltage and the second voltage is less than a gate control positive voltage; the gate control positive voltage is configured to control the thin film transistor to be turned on or off.

20. The display panel according to claim 1 or 16, characterized in that: It also includes a detection signal line, which is electrically connected to the first electrode of the photosensitive transistor and is configured to transmit the detection signal.

21. The display panel according to claim 20, characterized in that: It includes a display area, a bottom non-display area and a top non-display area, wherein the top non-display area and the bottom non-display area are located at two opposite sides of the display area; At least part of the detection signal line is located in the bottom non-display area, and extends from the bottom non-display area to the top non-display area; at least part of the touch electrode line is located in the bottom non-display area, and extends from the bottom non-display area to the display area; The touch electrode line is away from one end of the bottom non-display area and is adjacent to the detection signal line in the top non-display area.

22. The display panel according to claim 21, characterized in that: The light sensing module is located in the top non-display area.

23. The display panel according to claim 22, characterized in that: It also includes a side non-display area, wherein the side non-display area connects the top non-display area and the bottom non-display area; At least a portion of the detection signal line is located in the side non-display area.

24. The display panel according to claim 20, characterized in that: Also includes a first detection output signal line and at least one second detection output signal line; The light sensing module comprises at least two light sensing transistors and a light shielding element, wherein the at least two light sensing transistors comprise a first light sensing transistor and a second light sensing transistor, wherein the second electrode of the first light sensing transistor is electrically connected to the first detection output signal line, and the second electrode of the second light sensing transistor is electrically connected to the second detection output signal line; The light shielding element shields the photosensitive material layer of the first photosensitive transistor.

25. A display device, characterized in that: A display panel comprising any one of claims 1-24.

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