CN109187645B - Display panel and detection method of display panel - Google Patents
Display panel and detection method of display panel Download PDFInfo
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- CN109187645B CN109187645B CN201811115638.4A CN201811115638A CN109187645B CN 109187645 B CN109187645 B CN 109187645B CN 201811115638 A CN201811115638 A CN 201811115638A CN 109187645 B CN109187645 B CN 109187645B
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Abstract
The invention discloses a display panel and a detection method of the display panel, and belongs to the technical field of display. The display panel includes: a substrate base plate; the edge detection line comprises at least one sub-edge line positioned in the edge area of the substrate base plate; the middle detection line comprises at least one sub-middle line positioned in other areas of the substrate except the edge area, and two ends of any sub-middle line in the at least one sub-middle line are not connected. According to the invention, the middle detection line is arranged in the other areas except the edge area in the substrate base plate, whether cracks exist in the other areas except the edge area in the display panel is detected through the middle detection line, and whether cracks exist in the edge area is detected by matching with the edge detection line in the edge area, so that the display panel is comprehensively inspected. The problem that the display panel with cracks is possibly missed to be detected in the related technology is solved. The effect of avoiding missing the display panel with cracks is achieved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display substrate and a crack detection method of the display substrate.
Background
The display panel may be micro-cracked during the manufacturing process for various reasons. In order to avoid such a display panel having cracks from entering the market, the display panel is usually tested for the presence of cracks.
In a related art display panel, a circle of detection lines having an opening is disposed at an edge thereof, a signal is input from one end of the opening by an additional detection signal, and whether the detection line is cut off by a crack on the display panel is determined according to whether an output signal is received at the other end of the opening.
In the process of implementing the invention, the inventor finds that the related art has at least the following problems: the display panel is not full of cracks, and the display panel with cracks may be missed to be detected.
Disclosure of Invention
The embodiment of the invention provides a display panel and a detection method of the display panel, which can solve the problems that the detection of cracks of the display panel is not comprehensive enough and the detection of the display panel with cracks is possibly missed in the related technology. The technical scheme is as follows:
according to a first aspect of the present invention, there is provided a display panel comprising:
a substrate base plate;
the edge detection line comprises at least one sub-edge line positioned in the edge area of the substrate base plate, and two ends of any sub-edge line in the at least one sub-edge line are not connected;
the middle detection line comprises at least one sub-middle line positioned in other regions of the substrate base plate except the edge region, and two ends of any sub-middle line in the at least one sub-middle line are not connected.
Optionally, the display panel further comprises a plurality of light emitting units disposed on the substrate base,
one end of any sub-middle line is connected with at least one light-emitting unit in the plurality of light-emitting units, the other end of any sub-middle line is configured to input an electric signal, and the at least one light-emitting unit is configured to be started when the electric signal does not reach the one end of any sub-middle line.
Optionally, the at least one light emitting unit is connected to a data line,
one end of any sub-middle line is connected with the data line.
Optionally, the other end of the any sub-middle line is connected to one end of the any sub-edge line, and the other end of the any sub-edge line is configured to input the electrical signal.
Optionally, the one end of any sub-edge line is connected to at least one of the plurality of light-emitting units through a switch, and the one end of any sub-edge line is connected to the other end of any sub-middle line.
Optionally, the switch is a thin film transistor.
Optionally, the number of the sub-middle lines is n, n sub-edge lines are respectively located in n different regions of the substrate base plate, and n is greater than or equal to 2.
Optionally, the region of the substrate base plate except the edge region is equally divided into the n different regions.
According to a second aspect of the present invention, there is provided a method for detecting a display panel, the method being used for the display panel of the first aspect, the method comprising:
detecting whether any sub-edge line breaks or not through two ends of any sub-edge line in the edge detection lines;
and detecting whether any sub-middle line is broken or not through two ends of any sub-middle line in the middle detection line.
Optionally, the detecting whether there is a break in any sub-middle line through both ends of any sub-middle line in the middle detection line includes:
measuring the resistance at two ends of any sub-middle line;
and if the resistance at the two ends of any sub-middle line is infinite, determining that any sub-middle line is broken.
Optionally, the display panel further includes a plurality of light emitting units disposed on the substrate, one end of the any sub-central line is connected to at least one of the plurality of light emitting units, and the at least one light emitting unit is configured to be activated when the electrical signal does not reach the one end of the any sub-central line
The detecting whether there is a break in any sub-middle line through both ends of any sub-middle line in middle detecting lines includes:
inputting an electric signal to the other end of any sub-middle line;
and when the at least one light-emitting unit is started, determining that any sub-middle line is broken.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the middle detection line is arranged in the substrate except for the edge area, and is used for detecting whether cracks exist in other areas except for the edge area in the display panel, and then the edge detection line in the edge area is used for detecting whether cracks exist in the edge area, so that the display panel is comprehensively inspected. The problem of in the correlation technique not comprehensive enough to the detection of display panel crackle, probably miss the display panel who examines and have the crackle is solved. The effect of avoiding missing the display panel with cracks is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another display panel provided in the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 8 is a flowchart illustrating a method for inspecting a display panel according to an embodiment of the present invention;
FIG. 9 is a flowchart illustrating another exemplary method for inspecting a display panel according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of the potential of the embodiment of FIG. 9;
FIG. 11 is another potential diagram of the embodiment of FIG. 9;
FIG. 12 is another potential diagram of the embodiment of FIG. 9;
fig. 13 is another potential diagram of the embodiment of fig. 9.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
At present, the edge area of some flexible display panels (such as Organic Light-Emitting Diode (OLED) display panels) with flexibility may be an area for bending, such as the screen of some curved-screen mobile phones, and the edge of the flexible display panel is usually in a curved state. Therefore, a detection line (which may be called a Panel Crack Detection (PCD) line) is generally disposed in the edge region in the related art. For example, as shown in fig. 1, an edge region b of the display panel may be a region where an edge of the display panel extends to a center by a designated distance, and another region except the edge region b may be a middle region z. The edge region b is provided with a detection line t, which may include two ends d1 and d2, and it may be determined whether there is a break in the detection line t, and if there is a break in the detection line t, it may be determined that there is a crack in the edge region. The method for determining whether the detection line t is disconnected may be various, for example, an electrical signal may be input to one of two ends of the detection line t, and whether the other end receives the electrical signal is detected, if the electrical signal is received, it indicates that the detection line t is not disconnected, and if the electrical signal is not received, it indicates that the detection line t is disconnected.
However, it is difficult to detect the entire display panel in the above-described method.
Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention. The display panel 20 may include:
a base substrate 21.
And an edge detection line 22, wherein the edge detection line 22 comprises at least one sub-edge line 221 positioned in the edge region b of the substrate base plate, and two ends (e1 and e2) of any sub-edge line 221 in the at least one sub-edge line 221 are not connected.
And a middle detection line 23, the middle detection line 23 including at least one sub-middle line 231 located in the other region z of the substrate base plate except the edge region b, both ends of any sub-middle line 231 of the at least one sub-middle line 231 being unconnected (e3 and e 4).
Optionally, the middle detection line 23 may be formed in a one-step patterning process with a source/drain metal layer in the display panel, or may be formed separately on a substrate (the substrate may be made of Polyimide (PI)).
Fig. 2 shows a case where the number of the sub-edge line 221 and the sub-middle line 231 is 1, but the number of the sub-edge line 221 and the sub-middle line 231 is not limited, and the number of the sub-edge line 221 and the sub-middle line 231 may be other, such as 2, 3, 4, or 5. The sub-edge line 221 and the sub-center line 231 may be the same or different.
In summary, in the display panel provided by the embodiment of the present invention, the middle detection line is disposed in the substrate except for the edge region, and the middle detection line is used to detect whether the crack exists in the other region except for the edge region, and then the edge detection line in the edge region is used to detect whether the crack exists in the edge region, so that the display panel is comprehensively inspected. The problem of in the correlation technique not comprehensive enough to the detection of display panel crackle, probably miss the display panel who examines and have the crackle is solved. The effect of avoiding missing the display panel with cracks is achieved.
Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention. The display panel is adjusted based on the display panel shown in fig. 2.
Optionally, the display panel 20 further includes a plurality of light emitting units 24 disposed on the base substrate 21. The plurality of light emitting units 24 may be units for performing display in the display panel 20.
One end e3 of any sub center line 231 is connected to at least one light emitting cell 241 of the plurality of light emitting cells 24.
The other end e4 of any sub middle line 231 is configured to input an electric signal, and the at least one light emitting unit 241 is configured to be activated when the electric signal does not reach the one end e3 of any sub middle line 231. That is, the light emitting unit 241 connected to the one end e3 of any sub-center line 231 may serve as an indicator light, and the indicator light may be turned on when there is a disconnection in any sub-center line 231, so that it is easy for a detection person to find.
In the embodiment of the present invention, the plurality of light emitting cells 24 on the substrate base 21 may be arranged in an array in x rows and y columns. The number and arrangement position of the light emitting cells connected to one end e3 of any sub-center line 231 may be various. Illustratively, one end e3 of any sub-middle line 231 may be connected to any number of rows of light emitting cells or any number of columns (e.g., 12) of light emitting cells on the base substrate 21.
Alternatively, one end e3 of any sub-middle line 231 may be connected to the data line j of at least one light emitting cell on the base substrate 21 to control the at least one light emitting cell.
It should be noted that the positional relationship between the data line j and the plurality of light emitting units 24 shown in fig. 3 is only schematic, and the data line j and the plurality of light emitting units 24 may be located in the same layer or different layers in the display panel, which is not limited in the embodiment of the present invention.
Alternatively, since the green light emitting cells in the OLED display panel are easier to control, one end e3 of any sub-center line 231 may be connected to at least one green light emitting cell on the base substrate 21.
In the display panel shown in fig. 3, the presence or absence of a crack in the edge region b can be detected by the edge detection line 22 in the edge region b, and the presence or absence of a crack in the middle region z can also be detected by the middle detection line 23 in the middle region z. I.e. the edge region b and the middle region z can be detected independently. However, in the display panel provided in the embodiment of the present invention, the edge region b and the middle region z may be detected simultaneously.
Fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Wherein the other end e4 of any sub-middle line 231 is connected with one end e1 of any sub-edge line 221, and the other end e2 of any sub-edge line 221 is configured to input an electrical signal.
With such a structure, if there is a break in any one of the sub edge lines 221 or any one of the sub center lines 231, the electric signal inputted from the other end e2 of any one of the sub edge lines 221 cannot reach the one end e3 of any one of the sub center lines 231, and at least one light emitting unit connected to the one end e3 is turned on. That is, when there is a crack in the edge region b or the middle region z, it can be known by at least one light emitting cell 241 connected to one end e3 of the sub-middle line 231. This makes it possible to detect the presence or absence of cracks in the edge region b and the middle region z of the display panel as a whole.
Fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Wherein one end e1 of any sub edge line 221 is connected to at least one light emitting unit 241 of the plurality of light emitting units 24 through a switch s, and one end e1 of any sub edge line 221 is connected to the other end e4 of any sub middle line 231.
In fig. 5, when the switch s is opened, the equivalent circuit diagram of fig. 5 may be similar to fig. 4, and it may be possible to detect whether or not cracks exist in the edge region b and the middle region z of the display panel as a whole.
When the switch s is closed, whether or not there is a crack in the edge region b may be known by at least one light emitting unit 241 connected to one end e3 of the sub-center line 231. I.e. the edge region is detected separately.
Optionally, the switch s is a Thin Film Transistor (TFT). The opening and closing of the switch s can be controlled by the gate g of the switch s. For example, the switch s may be in an open state when a high potential voltage is input to the gate g, and may be in a closed state when a low potential voltage is input to the gate g. In the embodiment of the invention, the high potential voltage is a voltage higher than the low potential voltage.
Fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention. The number of the sub-middle lines 231 is n (fig. 6 shows that n is 2, but the number of n is not limited), the n sub-middle lines 231 are respectively located in n different regions of the substrate base, and n is not less than 2. Whether cracks exist in different areas can be detected through the sub-middle parts 231 located in different areas, so that the accurate positions of the cracks can be known, and the areas where the cracks appear on the display panel can be analyzed conveniently, so that the manufacturing technology of the display panel is improved.
Alternatively, the region (central region) z of the base substrate 21 other than the edge region b is equally divided into n different regions. Averaging the n regions can facilitate analysis of cracks in the display panel.
The meaning of other marks in fig. 6 can refer to fig. 5, and is not described herein again.
Fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention. The number of the sub-center lines 231 is 2, the number of the sub-edge lines 221 is also 2, the 2 sub-center lines 231 are symmetrically arranged on the substrate base 21, and the 2 sub-edge lines 221 are also symmetrically arranged on the substrate base 21. One end e3 of the sub-center line may be connected to a test assembly 25 in the display panel, and the test assembly 25 may be connected to a data line of at least one light emitting cell in the display panel.
Optionally, in each display panel provided in the embodiment of the present invention, when determining whether there is a crack in any one of the regions, the determination may be performed by using the resistance at two ends of any one of the lines (e.g., the sub-edge line, the sub-middle line, etc.) located in the region. If the resistance of any line is infinite, the existence of a broken part in any line is indicated, namely, a crack may exist in the area; if the resistance of the arbitrary line is not infinite, indicating that there is no break in the arbitrary line, then the region may be free of cracks. Therefore, the crack detection can be carried out on the display panel under the condition that the display panel is not started.
Optionally, in the embodiment of the present invention, both ends of each line (e.g., a sub-edge line, a sub-middle line, etc.) may extend to the edge of the substrate base board through the routing, so that testing of the lines may be facilitated.
The display panel used in the embodiment of the invention can be a large-size flexible foldable display panel, and the display panel can be folded once or multiple times to be converted into a smaller display panel. The middle detection line in the display panel provided by the embodiment of the invention can detect whether a crack exists in the middle area of the display panel.
In summary, in the display panel provided by the embodiment of the present invention, the middle detection line is disposed in the substrate except for the edge region, and the middle detection line is used to detect whether the crack exists in the other region except for the edge region, and then the edge detection line in the edge region is used to detect whether the crack exists in the edge region, so that the display panel is comprehensively inspected. The problem of in the correlation technique not comprehensive enough to the detection of display panel crackle, probably miss the display panel who examines and have the crackle is solved. The effect of avoiding missing the display panel with cracks is achieved.
Fig. 8 is a flowchart of a method for detecting a display panel according to an embodiment of the present invention, which can be used to detect some display panels according to the above embodiments. The method may include the following steps:
When any sub-edge line is broken, the area of the display panel where the any sub-edge line is located is indicated to have a crack, and the crack causes the any sub-edge line to be broken. When any sub-edge line is not broken, the area of the any sub-edge line on the display panel is not cracked
The method for detecting the edge detection line in this step can refer to step 802.
And step 802, detecting whether any sub-middle line is broken or not through two ends of any sub-middle line in the middle detection line.
In the embodiment of the present invention, the method for detecting whether there is a break in any sub-middle line through both ends of any sub-middle line may include the following two methods:
the first way.
This approach may include the following two steps:
1) the resistance across either sub-middle line is measured.
The resistance across either sub-middle line can be measured by a resistance tester.
2) And if the resistance at the two ends of any sub-middle line is infinite, determining that any sub-middle line is broken.
In this way, the presence or absence of a crack on the display panel can be detected without lighting the display panel.
The second way.
In this way, the structure of the display panel can be as shown in fig. 3. Wherein the display panel further includes a plurality of light emitting cells 24 disposed on the base substrate 21, and one end e3 of any sub-center line 231 is connected to at least one light emitting cell 241 of the plurality of light emitting cells 24, the at least one light emitting cell 241 being configured to be activated when an electric signal does not reach one end of any sub-center line.
This approach may include the following two steps:
1) and inputting an electric signal to the other end of any sub-middle line.
As shown in fig. 3, an electric signal may be input to the other end e4 of any sub center line 231.
2) And when at least one light-emitting unit is started, determining that any sub-middle line is broken.
When at least one light-emitting unit is started, it indicates that the electric signal does not reach one end of any sub-middle line, and then it can be determined that any sub-middle line is broken.
When any sub-middle line is broken, the area of the display panel where the any sub-middle line is located is indicated to have a crack, and the crack causes the breakage of the any sub-middle line. When the fracture does not exist in any sub-middle line, the fracture does not exist in the area of the display panel where any sub-middle line is located.
In summary, in the detection method for the display panel provided by the embodiment of the present invention, whether cracks exist in other regions except the edge region in the display panel is detected through the middle detection line, and then whether cracks exist in the edge region is detected in cooperation with the edge detection line in the edge region, so that the display panel is comprehensively inspected. The problem of in the correlation technique not comprehensive enough to the detection of display panel crackle, probably miss the display panel who examines and have the crackle is solved. The effect of avoiding missing the display panel with cracks is achieved.
Fig. 9 is a flowchart of another display panel inspection method according to an embodiment of the present invention, which can be used to inspect the display panel shown in fig. 7. The method may include the following steps:
and step 901, opening a switch between one end of any sub-edge line and at least one light-emitting unit.
The switch may be a thin film transistor, and the switching state of the thin film transistor may be controlled by a gate g of the thin film transistor.
And 902, judging whether any sub-edge line is broken or not through two ends of any sub-edge line. If any sub-edge line is broken, go to step 903; if there is no break in any of the sub-edge lines, steps 904 and 905 are performed.
The method for determining whether any sub-edge line is broken can refer to the above embodiments, and will not be described herein again.
And step 903, determining that cracks exist in the edge area of the display panel.
If any sub-edge line is broken, the edge of the display panel can be determined to have cracks.
Alternatively, in fig. 7, if the switch s is closed when a low-level voltage is input to the gate of the switch s, the switch s is opened when a high-level voltage is input to the gate g of the switch s, and the input of the other end e2 of the sub-edge line 221 is at a high level, the potentials of the nodes in the display panel in this step may be as shown in fig. 10. It can be seen that when the gate g of the switch s changes from the low potential voltage to the high potential voltage (i.e. the switch s changes from closed to open), the end e3 of the sub-center line (at this time, e3 may be equivalent to the end e1 of the sub-edge line) also changes from high to low, i.e. the electrical signal inputted from the other end e2 of the sub-edge line 221 cannot reach the end e1 of the sub-edge line 221 after the switch opens, indicating that there is a break in the sub-edge line 221.
And 904, if any sub-edge line is not broken, determining that no crack exists in the edge area of the display panel.
Alternatively, in fig. 7, if the switch s is closed when a low-level voltage is input to the gate of the switch s, the switch s is opened when a high-level voltage is input to the gate g of the switch s, and the input of the other end e2 of the sub-edge line 221 is at a high level, the potentials of the nodes in the display panel in this step may be as shown in fig. 11. It can be seen that when the gate g of the switch s is at a low voltage level (i.e. the switch s is closed), the end e3 of the sub-center line (at this time, e3 may be equivalent to the end e1 of the sub-edge line) is at a high level, that is, the electrical signal inputted from the other end e2 of the sub-edge line 221 reaches the end e1 of the sub-edge line 221, indicating that there is no break in the sub-edge line 221.
If there is no break in any of the sub-edge lines, a switch between one end of any of the sub-edge lines and the at least one light emitting cell may be opened.
And 906, judging whether the any sub-middle line is broken or not through the other end of the any sub-edge sub-line and one end of the any sub-middle line. If any sub-middle line is broken, go to step 907; if there is no break in any of the sub-middle lines, go to step 908.
The above embodiments can be referred to for the determination method, and are not described herein again.
In fig. 7, when a low potential voltage is input to the gate of the switch s, the switch s is closed, and when a high potential voltage is input to the gate g of the switch s, the switch s is opened, and the voltage input to the other end e2 of the sub-edge line 221 is high, one potential condition of each node in the display panel in this step may be as shown in fig. 12. It can be seen that when the gate g of the switch s is at a high potential voltage (i.e. the switch s is open), the end e3 of the sub-center line is at a low level, i.e. the electrical signal inputted from the other end e2 of the sub-edge line 221 does not reach the end e3 of the sub-center line 231, and since there is no break in the sub-edge line 221, it indicates that there is a break in the sub-center line 231.
Another potential situation can be seen from fig. 13, when the gate g of the switch s is at a high potential voltage (i.e., the switch s is open), the end e3 of the sub-center line is at a high level, that is, the electrical signal inputted from the other end e2 of the sub-edge line 221 reaches the end e3 of the sub-center line 231, indicating that there is no break in the sub-center line 231.
Step 907 determines that a crack exists in the middle region of the display panel.
When any sub-middle line is broken, the area where the any sub-middle line is located can be determined to have cracks, and if the sub-middle line in one or some of the areas on the substrate is broken, the area where the sub-middle lines are located can be determined to have cracks.
Step 908 determines that there is no crack in the middle region of the display panel.
If any sub-middle line is not broken, it can be determined that no crack exists in the area of the display panel where any sub-middle line is located.
In summary, in the detection method for the display panel provided by the embodiment of the present invention, whether cracks exist in other regions except the edge region in the display panel is detected through the middle detection line, and then whether cracks exist in the edge region is detected in cooperation with the edge detection line in the edge region, so that the display panel is comprehensively inspected. The problem of in the correlation technique not comprehensive enough to the detection of display panel crackle, probably miss the display panel who examines and have the crackle is solved. The effect of avoiding missing the display panel with cracks is achieved.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or there can be more than one intermediate layer or element. Like reference numerals refer to like elements throughout.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A display panel, comprising:
a substrate base plate;
the edge detection line comprises at least one sub-edge line positioned in the edge area of the substrate base plate, and two ends of any sub-edge line in the at least one sub-edge line are not connected;
the middle detection line comprises at least one sub-middle line positioned in other regions of the substrate base plate except the edge region, and two ends of any sub-middle line in the at least one sub-middle line are not connected;
the display panel further includes a plurality of light emitting units disposed on the substrate base plate, the plurality of light emitting units being units for performing display in the display panel;
one end of any sub-middle line is connected with at least one light-emitting unit in the plurality of light-emitting units, the other end of any sub-middle line is configured to input an electric signal, and the at least one light-emitting unit is configured to be started when the electric signal does not reach the one end of any sub-middle line.
2. The display panel according to claim 1, wherein the other end of the any sub-center line is connected to one end of the any sub-edge line, and the other end of the any sub-edge line is configured to input the electric signal.
3. The display panel according to claim 1, wherein the at least one light emitting unit is connected to one data line,
one end of any sub-middle line is connected with the data line.
4. The display panel according to claim 2, wherein the one end of the any sub edge line is connected to at least one of the plurality of light emitting units through a switch, and the one end of the any sub edge line is connected to the other end of the any sub middle line.
5. The display panel according to claim 4, wherein the switch is a thin film transistor.
6. The display panel according to claim 1, wherein the number of the sub-middle lines is n, n sub-middle lines are respectively located in n different regions of the substrate base plate, and n is greater than or equal to 2.
7. A method for inspecting a display panel, the method being used for the display panel according to any one of claims 1 to 6, the method comprising:
detecting whether any sub-edge line breaks or not through two ends of any sub-edge line in the edge detection lines;
detecting whether any sub-middle line is broken or not through two ends of any sub-middle line in the middle detection line;
the display panel further comprises a plurality of light-emitting units arranged on the substrate, the plurality of light-emitting units are used for displaying in the display panel, one end of any sub-middle line is connected with at least one light-emitting unit in the plurality of light-emitting units, and the at least one light-emitting unit is configured to be started when an electric signal does not reach the one end of any sub-middle line;
the detecting whether there is a break in any sub-middle line through both ends of any sub-middle line in middle detecting lines includes:
inputting an electric signal to the other end of any sub-middle line;
and when the at least one light-emitting unit is started, determining that any sub-middle line is broken.
8. The method of claim 7, wherein the detecting whether there is a break in any of the sub-middle lines by both ends of any of the middle detection lines comprises:
measuring the resistance at two ends of any sub-middle line;
and if the resistance at the two ends of any sub-middle line is infinite, determining that any sub-middle line is broken.
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Families Citing this family (4)
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|---|---|---|---|---|
| CN109192072A (en) * | 2018-10-24 | 2019-01-11 | 昆山国显光电有限公司 | Display panel and display device |
| CN111398355B (en) * | 2020-03-25 | 2022-08-23 | 武汉华星光电半导体显示技术有限公司 | Display panel detection circuit and display device |
| CN113467140B (en) * | 2020-03-31 | 2022-06-07 | 荣耀终端有限公司 | Display screen, electronic equipment and crack detection method |
| CN112378960A (en) * | 2020-12-14 | 2021-02-19 | 霸州市云谷电子科技有限公司 | Display substrate, display screen and crack detection method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101652705A (en) * | 2007-04-25 | 2010-02-17 | 夏普株式会社 | Liquid crystal display panel and its inspecting method |
| CN103984201A (en) * | 2014-05-05 | 2014-08-13 | 京东方科技集团股份有限公司 | Masking plate, and manufacturing method and crack detection apparatus for masking plate |
| CN204116461U (en) * | 2014-07-31 | 2015-01-21 | 上海天马微电子有限公司 | Display panel |
| CN104570421A (en) * | 2014-12-31 | 2015-04-29 | 上海天马微电子有限公司 | Display panel and display device |
| CN105372857A (en) * | 2015-12-16 | 2016-03-02 | 上海天马微电子有限公司 | Glass substrate, liquid crystal display panel and liquid crystal display device |
| CN105679215A (en) * | 2014-11-19 | 2016-06-15 | 昆山国显光电有限公司 | Display screen and crack detection method thereof |
| CN107255655A (en) * | 2017-06-29 | 2017-10-17 | 武汉天马微电子有限公司 | Flexible display panel, method for monitoring cracks on flexible display panel and display device |
| CN107464512A (en) * | 2017-09-15 | 2017-12-12 | 上海天马微电子有限公司 | Flexible display device |
| CN107680481A (en) * | 2016-08-01 | 2018-02-09 | 三星显示有限公司 | Display device |
| CN107871764A (en) * | 2016-09-28 | 2018-04-03 | 三星显示有限公司 | Display device with crackle sense wire |
| CN108154800A (en) * | 2016-12-05 | 2018-06-12 | 三星显示有限公司 | Display device |
| CN108492768A (en) * | 2018-03-23 | 2018-09-04 | 京东方科技集团股份有限公司 | A kind of panel crack detection structure and detection method |
-
2018
- 2018-09-25 CN CN201811115638.4A patent/CN109187645B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101652705A (en) * | 2007-04-25 | 2010-02-17 | 夏普株式会社 | Liquid crystal display panel and its inspecting method |
| CN103984201A (en) * | 2014-05-05 | 2014-08-13 | 京东方科技集团股份有限公司 | Masking plate, and manufacturing method and crack detection apparatus for masking plate |
| CN204116461U (en) * | 2014-07-31 | 2015-01-21 | 上海天马微电子有限公司 | Display panel |
| CN105679215A (en) * | 2014-11-19 | 2016-06-15 | 昆山国显光电有限公司 | Display screen and crack detection method thereof |
| CN104570421A (en) * | 2014-12-31 | 2015-04-29 | 上海天马微电子有限公司 | Display panel and display device |
| CN105372857A (en) * | 2015-12-16 | 2016-03-02 | 上海天马微电子有限公司 | Glass substrate, liquid crystal display panel and liquid crystal display device |
| CN107680481A (en) * | 2016-08-01 | 2018-02-09 | 三星显示有限公司 | Display device |
| CN107871764A (en) * | 2016-09-28 | 2018-04-03 | 三星显示有限公司 | Display device with crackle sense wire |
| CN108154800A (en) * | 2016-12-05 | 2018-06-12 | 三星显示有限公司 | Display device |
| CN107255655A (en) * | 2017-06-29 | 2017-10-17 | 武汉天马微电子有限公司 | Flexible display panel, method for monitoring cracks on flexible display panel and display device |
| CN107464512A (en) * | 2017-09-15 | 2017-12-12 | 上海天马微电子有限公司 | Flexible display device |
| CN108492768A (en) * | 2018-03-23 | 2018-09-04 | 京东方科技集团股份有限公司 | A kind of panel crack detection structure and detection method |
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