CN114627786A - Display panel, signal detection method and electronic equipment - Google Patents
Display panel, signal detection method and electronic equipment Download PDFInfo
- Publication number
- CN114627786A CN114627786A CN202210282081.3A CN202210282081A CN114627786A CN 114627786 A CN114627786 A CN 114627786A CN 202210282081 A CN202210282081 A CN 202210282081A CN 114627786 A CN114627786 A CN 114627786A
- Authority
- CN
- China
- Prior art keywords
- signal
- detection
- shift register
- display panel
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 192
- 230000003068 static effect Effects 0.000 claims description 12
- 230000002265 prevention Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 30
- 238000000034 method Methods 0.000 description 12
- 230000005611 electricity Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 201000005569 Gout Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a display panel, a signal detection method and electronic equipment. Therefore, the structural design of the display panel can realize the direct detection of the output signal of the shift register module, and the signal detection mode is simpler; and the driving module controls the working state of the shift register module based on the detection result of the signal to be detected so as to ensure the driving capability of the shift register and further improve the working performance of the display panel. Furthermore, the signal output end of the shift register module is also connected with a detection pad, namely, the structural design of the display panel can still realize the detection of the output signal of the shift register module through the detection pad.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel, a signal detection method, and an electronic device.
Background
Liquid Crystal Displays (LCDs) or Organic Light Emitting Diodes (OLEDs) have the advantages of low radiation, small size, and low power consumption, and have been widely used in electronic devices such as notebook computers, flat televisions, or mobile phones. In the conventional lcd, an external driving chip is used to drive the chip on the panel to realize image display, but in order to reduce the number of elements and the manufacturing cost, a driving circuit structure is gradually developed to be directly fabricated in the display panel in recent years, for example, a gate driver (gate driver) is integrated in the display panel.
In general, in the manufacturing process or the using process of the display panel, there may be a defect in the shift register in the gate driving circuit, so in the design process of the display panel, a detection pad is disposed at the periphery of the display panel for detecting whether there is an abnormality in the gate shift register.
However, in order to prevent static electricity from entering an internal circuit through the detection pad after the display panel is manufactured, a signal trace between the detection pad and the shift register is disconnected, and thus it is obviously impossible to directly detect a signal of the shift register through the detection pad; if the shift register needs to be signal-detected by the detection pad, the detection pad needs to be connected to the corresponding signal line, for example, the detection pad is connected to the corresponding signal line by a laser method.
In addition, the detection pad is usually packaged after the display panel is manufactured, and obviously, when the signal of the shift register needs to be detected through the detection pad, the detection pad needs to be unpacked.
Therefore, how to simplify the detection method of the output signal of the shift register by optimizing the structure of the display panel is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, in order to solve the above problems, the present invention provides a display panel, a signal detection method and an electronic device, and the technical solution is as follows:
a display panel, the display panel comprising: the device comprises a shift register module, a detection switch, a detection bonding pad and a driving module;
the signal output end of the shift register module is connected with the first end of the detection switch, and the second end of the detection switch is respectively connected with the driving module and the detection bonding pad;
the control end of the detection switch is used for receiving a switch control signal to enable the detection switch to be in a conducting state or a switching-off state;
the signal output end of the shift register module is used for outputting a signal to be detected, and the driving module is used for detecting the signal to be detected and controlling the working state of the shift register based on the detection result.
A signal detection method applied to the driving module, the signal detection method comprising:
acquiring the signal to be detected, and analyzing and processing the signal to be detected;
and controlling the working state of the shift register module based on the detection result.
An electronic device comprises the display panel.
Compared with the prior art, the invention has the following beneficial effects:
the display panel provided by the invention is connected with the shift register module by combining the driving module with the detection switch, the driving module receives an output signal of the shift register module as a signal to be detected when the display panel is in a conducting state based on the working state of the detection switch, and the signal to be detected is subjected to signal processing so as to realize signal detection on the shift register module. Therefore, the structural design of the display panel can realize the direct detection of the output signal of the shift register module, and the signal detection mode is simpler; and the driving module controls the working state of the shift register module based on the detection result of the signal to be detected to ensure the driving capability of the shift register, thereby improving the working performance of the display panel.
Furthermore, the signal output end of the shift register module is also connected with a detection pad, that is, the structural design of the display panel can still realize the detection of the output signal of the shift register module through the detection pad.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a signal detection principle in a display panel according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a signal detection in another display panel according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a signal detection in another display panel according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a signal detection in a display panel according to another embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a signal detection in another display panel according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a signal detection in another display panel according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a signal detection in another display panel according to an embodiment of the present invention;
fig. 8 is a schematic diagram illustrating a signal detection in another display panel according to an embodiment of the present invention;
fig. 9 is a schematic diagram illustrating a signal detection in a display panel according to another embodiment of the present invention;
fig. 10 is a schematic diagram illustrating a signal detection in a display panel according to another embodiment of the present invention;
fig. 11 is a schematic top view illustrating a display panel according to an embodiment of the invention;
fig. 12 is a schematic flowchart of a signal detection method according to an embodiment of the present invention;
fig. 13 is a schematic diagram of signal delay of a signal to be detected according to an embodiment of the present invention;
FIG. 14 is a timing diagram of a clock signal according to an embodiment of the present invention;
FIG. 15 is a timing comparison diagram of output signals of a shift register module according to an embodiment of the present invention;
FIG. 16 is a timing comparison diagram of clock signals according to an embodiment of the present invention;
fig. 17 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a principle of signal detection in a display panel according to an embodiment of the present invention.
The display panel includes: a shift register module 11, a detection switch 12, a detection pad 13 and a driving module 14.
The signal output end of the shift register module 11 is connected to the first end of the detection switch 12, and the second end of the detection switch 12 is connected to the driving module 14 and the detection pad 13, respectively.
The control terminal of the detection switch 12 is configured to receive a switch control signal V1, so that the detection switch 12 is in an on state or an off state.
The signal output end of the shift register module 11 is configured to output a signal to be detected, and the driving module 14 is configured to detect the signal to be detected and control the operating state of the shift register module 11 based on the detection result.
Specifically, the driving module 14 includes, but is not limited to, a driving IC (Integrated Circuit) for controlling the operation of the display panel; the driving module 14 normally outputs signals such as a clock signal CLK, a trigger signal STV, etc. required by the shift register module 11 to control the operating state of the shift register module 11.
In the manufacturing process of the display panel, the driving module 14 generally reserves a plurality of signal pins such as input pins, output pins, detection pins and the like, so that the driving module 14 can be connected with the shift register module 11 by combining the detection switch 12, the driving module 14 receives an output signal of the shift register module 11 as a signal to be detected when the driving module is in a conducting state based on the working state of the detection switch 12, and performs signal processing on the signal to be detected to realize signal detection on the shift register module 11; therefore, the structural design of the display panel can realize the direct detection of the output signal of the shift register module 11, and the signal detection mode is simpler; in addition, the driving module 14 controls the operating state of the shift register module 11 based on the detection result of the output signal of the shift register module 11, so as to ensure the driving capability of the shift register module 11, and further improve the operating performance of the display panel.
Further, the signal output terminal of the shift register module 11 is further connected to the detection pad 13, that is, the structural design of the display panel can still realize the detection of the output signal of the shift register module 11 through the detection pad 13.
In addition, the control end of the detection switch 12 receives the switch control signal V1 to make the detection switch 12 in the on state or the off state, and obviously, the control switch control signal V1 can ensure that the detection switch 12 is in the on state only when the signal detection needs to be performed on the output signal of the shift register module 11, and the detection switch 12 is in the off state in the rest stages, so that the static electricity can be prevented from being transmitted back to the shift register module 11 through the detection switch 12, and the working performance of the shift register module 11 can be improved.
Since the driving module 14 outputs signals such as the clock signal CLK and the trigger signal STV required by the shift register in the shift register module 11, the driving module 14 further controls the operating state of the shift register module based on the detection result of the output signal of the shift register module 11, for example, if the driving module 14 detects that the signal delay of the output signal of the shift register module 11 does not meet the operating requirement, the driving module 14 may increase the voltage output by the signal output terminal of the shift register module 11 and/or increase the duty ratio of the effective pulse of the clock signal CLK to increase the driving capability of the shift register module 11, thereby improving the operating performance of the display panel.
Optionally, in another embodiment of the present invention, referring to fig. 2, fig. 2 is a schematic diagram illustrating a principle of signal detection in another display panel provided in the embodiment of the present invention.
The shift register module 11 comprises a plurality of cascaded shift registers ASG.
The output terminal of the shift register ASG of the last stage is connected to the first terminal of the detection switch 12.
Specifically, GOUT is a signal output END of the shift register ASG, END is an END signal END of the shift register ASG, STV is a trigger signal END of the shift register ASG, and CLK is a clock signal END of the shift register ASG; it should be noted that the shift register ASG further includes other signal ports for receiving corresponding signals, which are not shown in fig. 2.
In FIG. 2, n shift registers ASG cascade is taken as an example, n ≧ 2, and n is a positive integer.
In the n cascaded shift registers ASG, the output signal of the shift register ASG at the previous stage is used as the trigger signal of the shift register ASG at the next stage, so that only the output signal of the shift register ASG at the last stage needs to be measured, and the output signal of the shift register ASG at each stage does not need to be detected, thereby simplifying the circuit structure of signal detection and the wiring difficulty in the display panel.
Optionally, in another embodiment of the present invention, referring to fig. 3, fig. 3 is a schematic diagram illustrating a principle of signal detection in another display panel according to an embodiment of the present invention.
The control end of the detection switch 12 is connected to the driving module 14, and the driving module 14 is configured to output the switch control signal V1.
Specifically, as shown in fig. 3, the driving module 14 includes an output pin and a detection pin, the output pin is connected to the control terminal of the detection switch 12 for outputting a switch control signal V1, for example, by outputting a switch control signal of a high pulse and a low pulse, the detection switch is controlled to be in a conducting state during the high pulse period, and the detection switch is controlled to be in a closing state during the low pulse period.
Optionally, the switch control signal V1 output by the driving module 14 may be in a high pulse state when the last stage of shift register of each frame outputs a high pulse, so as to turn on the detection switch; when the last stage of shift register of each frame outputs low pulse, the state is in low pulse state to close the detection switch; or the state is high pulse state when the last stage shift register of a certain frame after a plurality of frames outputs high pulse, so as to open the detection switch; when the last stage shift register of each frame outputs low pulse, it is in low pulse state to close the detection switch.
That is, the logic of the output switch control signal V1 of the driving module 14 in the present application can be flexibly adjusted according to the actual request, thereby improving the flexibility of signal detection for the shift register module 11.
Optionally, in another embodiment of the present invention, referring to fig. 4, fig. 4 is a schematic diagram illustrating a principle of signal detection in another display panel according to an embodiment of the present invention.
The display panel further includes: a first antistatic module 15.
A second end of the detection switch 12 is connected to the driving module 14 and the detection pad 13 through the first anti-static module 15.
Specifically, as shown in fig. 4, the first anti-static module 15 is arranged to prevent static electricity from being introduced into the driving module 14 and the shift register module 11 through the detection pad 13, so as to improve the working performance of the driving module 14 and the shift register module 11, and finally improve the anti-static capability of the display panel.
Optionally, in another embodiment of the present invention, referring to fig. 5, fig. 5 is a schematic diagram illustrating a principle of signal detection in another display panel according to an embodiment of the present invention.
The control terminal of the detection switch 12 is connected to the first terminal of the detection switch 12.
Specifically, when the output signal of the shift register module 11 is detected, the output signal thereof may also be used as the switch control signal V1 of the detection switch 12, and when the shift register module 11 outputs the output signal of the high pulse, the detection switch 12 is in the on state, so as to implement the signal detection of the output signal; when the shift register module 11 outputs the output signal of the low pulse, the detection switch 12 is in an off state.
Compared with the signal detection structure shown in fig. 3, the control terminal of the detection switch 12 does not need to be connected with the driving module 14, and only needs to be connected with one electrode terminal of the detection switch, so that the wiring difficulty of the display panel is obviously simplified; the versatile selection of the switch control signal V1 required to detect the switch 12 is also further illustrated.
Optionally, in another embodiment of the present invention, referring to fig. 6, fig. 6 is a schematic diagram illustrating a principle of signal detection in another display panel according to an embodiment of the present invention.
On the basis of the signal detection structure shown in fig. 5, a first anti-static module 15 is further added.
A second end of the detection switch 12 is connected to the driving module 14 and the detection pad 13 through the first anti-static module 15.
Similarly, as shown in fig. 6, by providing the first anti-static module 15, static electricity can be prevented from being introduced into the driving module 14 and the shift register module 11 through the detection pad 13, so that the working performance of the driving module 14 and the shift register module 11 is improved, and the anti-static capability of the display panel is improved.
Optionally, in another embodiment of the present invention, referring to fig. 7, fig. 7 is a schematic diagram illustrating a principle of signal detection in another display panel according to an embodiment of the present invention.
The detection switch 12 is integrally arranged inside the driving module 14; the driving module 14 includes a first pin 141, a second pin 142, and a signal detection circuit 143.
A first end of the detection switch 12 is connected to the signal output end of the shift register module 11 through the first pin 141.
A second end of the detection switch 12 is connected to the signal detection circuit 143 and the detection pad 13 through the second pin 142.
The signal detection circuit 142 is used for detecting the signal to be detected.
Specifically, the first pin 141 is an input pin, the second pin 142 is an output pin, and the driving module 14 outputs a switch control signal V1 for controlling the working state of the detection switch 12.
In this embodiment, the area of the occupied area of the signal detection structure on the display panel can be greatly reduced by integrally setting the detection switch 12 in the driving module 14, so that the arrangement mode of the signal detection structure can be reasonably designed under the condition of limited space of the display panel, and the design difficulty of the signal detection structure on the display panel is further reduced.
Optionally, referring to fig. 8, fig. 8 is a schematic diagram illustrating a principle of signal detection in another display panel according to an embodiment of the present invention, and the driving module 14 further includes a third pin 144.
Compared with the signal detection structure shown in fig. 7, the third pin 144 is an input pin, and the signal detection circuit 143 is connected to the second end of the detection switch 12 through the second pin and the third pin, that is, a single signal pin receives the signal to be detected output by the shift register module 11.
It should be noted that how to select the signal pins on the driving module 14 in this application may be reasonably arranged based on the requirement of how to simplify the wiring requirement, and the embodiment of the present invention is not limited thereto.
Optionally, in another embodiment of the present invention, referring to fig. 9, fig. 9 is a schematic diagram illustrating a principle of signal detection in another display panel according to an embodiment of the present invention.
The display panel further includes: and a second antistatic module 16.
A second end of the inspection switch 16 is connected to the inspection pad 13 through the second pin 142 and the second anti-static module 16.
Specifically, as shown in fig. 9, the second anti-static module 16 is disposed to prevent static electricity from being introduced into the driving module 14 and the shift register module 11 through the detection pad 13, so as to improve the working performance of the driving module 14 and the shift register module 11 and improve the anti-static capability of the display panel.
Optionally, in another embodiment of the present invention, referring to fig. 10, fig. 10 is a schematic diagram illustrating a principle of signal detection in another display panel according to an embodiment of the present invention.
The display panel further includes: and a third static electricity prevention module 17.
A first end of the detection switch 12 is connected to a signal output end of the shift register module 11 through the first pin 141 and the third static electricity prevention module 17.
Specifically, as shown in fig. 10, the third static electricity prevention module 17 is provided to prevent static electricity from being introduced into the driving module 14 in the output process of the signal to be detected, so as to improve the working performance of the driving module 14, further improve the signal detection precision of the driving module 14, and improve the static electricity prevention capability of the display panel.
Optionally, in another embodiment of the present invention, the shift register module 11 includes a first transistor.
The detection switch 12 is a second transistor.
The width-to-length ratio of the second transistor is greater than the width-to-length ratio of the first transistor.
Specifically, as shown in fig. 1 to fig. 10, the detection switch 12 is a transistor, so that the control terminal of the detection switch 12 may be understood as a gate of the transistor, the first terminal of the detection switch 12 may be understood as a source or a drain of the transistor, and the second terminal of the detection switch 12 may be understood as a drain or a source of the transistor; it should be noted that, when the first terminal of the detection switch 12 is the source, the second terminal of the detection switch 12 is a missing mark at this time; when the first terminal of the detection switch 12 is the drain, the second terminal of the detection switch 12 is the source.
Because the signal to be detected output by the shift register module 11 needs to be received by the driving module 14 through the second transistor, in order to avoid a serious signal distortion problem after the signal to be detected passes through the second transistor, the width-to-length ratio of the second transistor is larger than that of the first transistor, so that the driving module 14 can receive the signal to be detected with high signal quality, so that the signal to be detected output by the shift register module 11 cannot have the problems of signal distortion and the like after passing through the second transistor, and the signal detection precision of the driving module 14 on the signal output by the shift register module 11 can be further improved.
Note that the first transistor is not shown in fig. 1 to 10.
Optionally, in another embodiment of the present invention, referring to fig. 11, fig. 11 is a schematic top view of a display panel according to an embodiment of the present invention.
The display panel comprises a display area AA and a frame area BB at least partially surrounding the display area AA, wherein the frame area BB comprises a step area CC.
The shift register module 11 is located in the display area AA.
The detection switch 12, the detection pad 13 and the driving module 14 are located in the step area CC.
Specifically, the detection switch 12, the detection pad 13 and the driving module 14 are all located in the step area CC of the display panel, so that the display area AA of the display panel is not affected, that is, the signal detection structure provided by the present invention is laid out in the step area CC of the display panel, and is connected to the output end of the shift register module 11 by routing, so as to detect the signal output by the shift register module 11.
Optionally, based on any one of the above embodiments of the present invention, in another embodiment of the present invention, a signal detection method is further provided, where the signal detection method is applied to the driving module described in any one of the above embodiments, with reference to fig. 12, fig. 12 is a schematic flow chart of the signal detection method provided in the embodiment of the present invention.
The signal detection method comprises the following steps:
s101: and acquiring the signal to be detected, and analyzing and processing the signal to be detected.
S102: and controlling the working state of the shift register module based on the detection result.
In the embodiment, the direct detection of the output signal of the shift register module can be realized through the driving module, and the signal detection mode is simpler; and the driving module controls the working state of the shift register module based on the detection result of the signal to be detected to ensure the driving capability of the shift register, thereby improving the working performance of the display panel.
Optionally, in another embodiment of the present invention, the analyzing and processing the signal to be detected in step S101 includes:
and judging whether the signal delay of the signal to be detected meets the preset requirement or not.
For example, referring to fig. 13, fig. 13 is a schematic diagram illustrating signal delay of a signal to be detected according to an embodiment of the present invention; when the signal delay of the signal to be detected exceeds a certain set threshold, the signal delay of the signal to be detected can be judged not to meet the preset requirement.
Optionally, in another embodiment of the present invention, referring to fig. 14, fig. 14 is a timing diagram of a clock signal according to an embodiment of the present invention.
As shown in fig. 14, the clock signal CLK received by the shift register module includes an active pulse C1 and an inactive pulse C2.
In step S102, controlling the operating state of the shift register module based on the detection result includes:
and if the signal delay of the signal to be detected does not meet the preset requirement, improving the voltage output by the signal output end and/or increasing the duty ratio of the effective pulse.
Specifically, referring to fig. 15, fig. 15 is a schematic diagram illustrating a timing comparison of output signals of a shift register module according to an embodiment of the present invention; referring to fig. 16, fig. 16 is a timing comparison diagram of a clock signal according to an embodiment of the present invention.
As shown in fig. 15, when the signal delay of the signal to be detected output by the shift register module does not meet the preset requirement, the voltage of the signal to be detected output by the shift register module can be increased, so as to increase the driving capability of the shift register module, and further improve the working performance of the display panel.
As shown in fig. 16, when the signal delay of the signal to be detected output by the shift register module does not meet the preset requirement, the duty ratio of the effective pulse of the clock signal received by the shift register module can be increased, so as to improve the driving capability of the shift register module, and further improve the working performance of the display panel.
Optionally, based on any one of the above embodiments of the present invention, in another embodiment of the present invention, an electronic device is further provided, referring to fig. 17, and fig. 17 is a schematic structural diagram of the electronic device provided in the embodiment of the present invention.
The electronic device 100 includes the display panel according to the above embodiments of the present application.
The electronic device 100 includes, but is not limited to, a display device such as a mobile phone or a tablet, and the display device has at least the same technical effects as the display panel.
The display panel, the signal detection method and the electronic device provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (14)
1. A display panel, comprising: the device comprises a shift register module, a detection switch, a detection bonding pad and a driving module;
the signal output end of the shift register module is connected with the first end of the detection switch, and the second end of the detection switch is respectively connected with the driving module and the detection bonding pad;
the control end of the detection switch is used for receiving a switch control signal to enable the detection switch to be in a conducting state or a switching-off state;
the signal output end of the shift register module is used for outputting a signal to be detected, and the driving module is used for detecting the signal to be detected and controlling the working state of the shift register based on the detection result.
2. The display panel according to claim 1, wherein the shift register module comprises a plurality of cascaded shift registers;
and the output end of the shift register of the last stage is connected with the first end of the detection switch.
3. The display panel according to claim 1, wherein a control terminal of the detection switch is connected to the driving module, and the driving module is configured to output the switch control signal.
4. The display panel according to claim 1, wherein a control terminal of the detection switch is connected to a first terminal of the detection switch.
5. The display panel according to any one of claims 1 to 4, characterized in that the display panel further comprises: a first anti-static module;
and the second end of the detection switch is respectively connected with the driving module and the detection bonding pad through the first anti-static module.
6. The display panel according to claim 1, wherein the detection switch is integrally provided inside the driving module; the driving module comprises a first pin, a second pin and a signal detection circuit;
the first end of the detection switch is connected with the signal output end of the shift register module through the first pin;
the second end of the detection switch is respectively connected with the signal detection circuit and the detection bonding pad through the second pin;
the signal detection circuit is used for detecting the signal to be detected.
7. The display panel according to claim 6, characterized in that the display panel further comprises: a second anti-static module;
and the second end of the detection switch is connected with the detection bonding pad through the second pin and the second anti-static module.
8. The display panel according to claim 6 or 7, characterized in that the display panel further comprises: a third static prevention module;
the first end of the detection switch is connected with the signal output end of the shift register module through the first pin and the third static prevention module.
9. The display panel according to claim 1, wherein the shift register module includes a first transistor;
the detection switch is a second transistor;
the width-to-length ratio of the second transistor is greater than the width-to-length ratio of the first transistor.
10. The display panel of claim 1, wherein the display panel comprises a display area and a bezel area at least partially surrounding the display area, the bezel area comprising a step area;
the shift register module is positioned in the display area;
the detection switch, the detection bonding pad and the driving module are located in the step area.
11. A signal detection method applied to the drive module according to any one of claims 1 to 10, the signal detection method comprising:
acquiring the signal to be detected, and analyzing and processing the signal to be detected;
and controlling the working state of the shift register module based on the detection result.
12. The signal detection method according to claim 11, wherein the analyzing the signal to be detected comprises:
and judging whether the signal delay of the signal to be detected meets a preset requirement or not.
13. The signal detection method of claim 12, wherein the shift register module is configured to receive a clock signal, the clock signal comprising an active pulse and an inactive pulse;
the controlling the working state of the shift register module based on the detection result comprises:
and if the signal delay of the signal to be detected does not meet the preset requirement, improving the voltage output by the signal output end and/or increasing the duty ratio of the effective pulse.
14. An electronic device characterized in that the electronic device comprises the display panel of any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210282081.3A CN114627786A (en) | 2022-03-22 | 2022-03-22 | Display panel, signal detection method and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210282081.3A CN114627786A (en) | 2022-03-22 | 2022-03-22 | Display panel, signal detection method and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114627786A true CN114627786A (en) | 2022-06-14 |
Family
ID=81904738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210282081.3A Pending CN114627786A (en) | 2022-03-22 | 2022-03-22 | Display panel, signal detection method and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114627786A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000067310A (en) * | 1999-04-27 | 2000-11-15 | 구본준 | Shift register for liquid crystal display |
| CN101038315A (en) * | 2006-03-16 | 2007-09-19 | 统宝光电股份有限公司 | Scanning tester and method for plane display device |
| CN101202024A (en) * | 2006-12-11 | 2008-06-18 | 三星电子株式会社 | Liquid crystal display device, system and methods of compensating for delays of gate driving signals thereof |
| CN106647082A (en) * | 2017-02-24 | 2017-05-10 | 武汉华星光电技术有限公司 | Circuit and method for testing gate line of array substrate |
| CN207458545U (en) * | 2017-11-23 | 2018-06-05 | 昆山龙腾光电有限公司 | A kind of display panel and display device |
| CN108154833A (en) * | 2018-01-03 | 2018-06-12 | 京东方科技集团股份有限公司 | The output detection circuit and its method of a kind of gate driving circuit, display device |
| CN111179825A (en) * | 2020-01-02 | 2020-05-19 | 昆山国显光电有限公司 | Voltage adjusting module and voltage adjusting method of display device and display device |
| CN111445834A (en) * | 2020-05-12 | 2020-07-24 | 京东方科技集团股份有限公司 | Display substrate, display panel and test method of display panel |
| CN112349230A (en) * | 2020-12-04 | 2021-02-09 | 厦门天马微电子有限公司 | Display panel, detection method thereof and display device |
| CN112992024A (en) * | 2021-02-08 | 2021-06-18 | 昆山龙腾光电股份有限公司 | Display device and detection method thereof |
-
2022
- 2022-03-22 CN CN202210282081.3A patent/CN114627786A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000067310A (en) * | 1999-04-27 | 2000-11-15 | 구본준 | Shift register for liquid crystal display |
| CN101038315A (en) * | 2006-03-16 | 2007-09-19 | 统宝光电股份有限公司 | Scanning tester and method for plane display device |
| CN101202024A (en) * | 2006-12-11 | 2008-06-18 | 三星电子株式会社 | Liquid crystal display device, system and methods of compensating for delays of gate driving signals thereof |
| CN106647082A (en) * | 2017-02-24 | 2017-05-10 | 武汉华星光电技术有限公司 | Circuit and method for testing gate line of array substrate |
| CN207458545U (en) * | 2017-11-23 | 2018-06-05 | 昆山龙腾光电有限公司 | A kind of display panel and display device |
| CN108154833A (en) * | 2018-01-03 | 2018-06-12 | 京东方科技集团股份有限公司 | The output detection circuit and its method of a kind of gate driving circuit, display device |
| CN111179825A (en) * | 2020-01-02 | 2020-05-19 | 昆山国显光电有限公司 | Voltage adjusting module and voltage adjusting method of display device and display device |
| CN111445834A (en) * | 2020-05-12 | 2020-07-24 | 京东方科技集团股份有限公司 | Display substrate, display panel and test method of display panel |
| CN112349230A (en) * | 2020-12-04 | 2021-02-09 | 厦门天马微电子有限公司 | Display panel, detection method thereof and display device |
| CN112992024A (en) * | 2021-02-08 | 2021-06-18 | 昆山龙腾光电股份有限公司 | Display device and detection method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107424577B (en) | Display driving circuit, display device and driving method thereof | |
| CN107705762B (en) | Shifting register unit and driving method thereof, grid driving device and display device | |
| US9983727B2 (en) | Array substrate, method for driving the array substrate, display panel and display device | |
| US10775925B2 (en) | Shift register unit and method for driving the same, gate driving circuit and display apparatus | |
| EP3285250B1 (en) | Drive chip, drive board and test method therefor, and display device | |
| EP3151223B1 (en) | Display drive circuit, array substrate and touch display device | |
| US9953555B2 (en) | Driving circuit for touch screen, in-cell touch screen and display apparatus | |
| US12014675B2 (en) | Display panel and display device | |
| CN110192240B (en) | Signal protection circuit, driving method and device thereof | |
| US10198135B2 (en) | Touch circuit, touch panel and display apparatus | |
| CN107038985B (en) | Driving module for display panel, display panel and display device | |
| US10762975B2 (en) | Shift register circuit, driving method thereof, and display device | |
| US10886301B2 (en) | Test circuit, array substrate, display panel, and display device | |
| CN103366704A (en) | Shifting register unit, gate drive circuit and display circuit | |
| CN106548761A (en) | A kind of display control circuit of display floater, display control method and relevant apparatus | |
| CN108648703B (en) | Display panel and display device | |
| CN105609138A (en) | Shifting register, gate driving circuit, display panel and display device | |
| US20120280966A1 (en) | Display driver and flicker suppression device thereof | |
| CN105575357A (en) | Shifting register, grid line integration driving circuit and driving method thereof, and display apparatus | |
| US7327343B2 (en) | Display driving circuit | |
| US11263952B2 (en) | Shift register unit, shift register and driving method, and display apparatus | |
| CN107358905B (en) | Display panel and electronic equipment | |
| CN104795038A (en) | Liquid crystal display panel driving circuit | |
| US20210142709A1 (en) | Gate driving circuit and display substrate | |
| CN114627786A (en) | Display panel, signal detection method and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |