CN110827728A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN110827728A CN110827728A CN201911157712.3A CN201911157712A CN110827728A CN 110827728 A CN110827728 A CN 110827728A CN 201911157712 A CN201911157712 A CN 201911157712A CN 110827728 A CN110827728 A CN 110827728A
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- 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
Abstract
The embodiment of the invention discloses a display panel and a display device. The display panel includes: a substrate including a display region and a non-display region; the multi-stage gate driving circuit is positioned in the non-display area of the substrate; the broken line detection line is positioned in the non-display area of the substrate; the disconnection detecting lines surround the plurality of stages of the gate driving circuits at one side of the display region. Compared with the prior art, the embodiment of the invention realizes the detection of ESD broken lines, can intercept the display panel with bad ESD broken lines in time, and improves the yield of the display panel.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the continuous development of display technology, display panels are widely used, and the requirements of people on the display panels are higher and higher.
In the manufacturing process of the display panel, a signal line in the display panel is disconnected under the influence of Electro-Static discharge (ESD), however, the ESD disconnection in the display panel cannot be detected in the prior art, and the yield of the shipped display panel is low.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for detecting ESD (electro-static discharge) disconnection and improving the yield of the display panel.
In order to achieve the technical purpose, the embodiment of the invention provides the following technical scheme:
a display panel, comprising:
a substrate including a display region and a non-display region;
the multi-stage gate driving circuit is positioned in the non-display area of the substrate;
the broken line detection line is positioned in the non-display area of the substrate; the disconnection detecting lines surround the plurality of stages of the gate driving circuits at one side of the display region.
According to the technical scheme, the broken line detection line is arranged in the non-display area of the display panel, and other wires in the broken line detection line and the non-display area are affected by the same ESD, so that the breakage condition of other wires can be judged by detecting whether the broken line detection line is broken or not. Therefore, the embodiment of the invention realizes the effect of detecting ESD broken lines, can intercept the display panel with bad ESD broken lines in time in the production process of the display panel, improves the yield of the display panel, and avoids carrying out subsequent manufacturing process on the display panel with bad ESD broken lines, thereby being beneficial to reducing the production cost. And the embodiment of the invention arranges the broken line detection lines around the multi-stage gate drive circuit, which is equivalent to that the broken line detection lines are distributed in the whole area of the non-display area at one side of the display area, and the broken line detection lines can detect not only the ESD broken lines positioned at the edge of the non-display area close to the frame, but also the ESD broken lines positioned at the edge of the non-display area close to the display area. In addition, the wire breakage detection line provided by the embodiment of the invention can also be used for detecting cracks of the display panel.
Furthermore, each stage of the gate driving circuit is surrounded by the broken wire detection line, so that the length of the broken wire detection line and the winding range are increased, and the ESD broken wire detection range is enlarged.
Further, the wire breakage detection line comprises reciprocating line segments, and each reciprocating line segment corresponds to at least one stage of the gate driving circuit. The reciprocating line segment means that two line segments of the line segment are arranged on one side of the gate driving circuit, and one ends of the two line segments are connected, namely the line segment performs reciprocating winding along the edge of the gate driving circuit. Taking the three-level gate driving circuits as an example, the broken line detection line further comprises a single line routing section, and the reciprocating routing section and the single line routing section are connected end to end and surround each group of gate driving circuits. The embodiment of the invention arranges the broken line detection line to comprise the reciprocating line segment, thereby realizing the line design that the broken line detection line sequentially surrounds a plurality of groups of grid drive circuits.
Further, the display area is provided with a scanning line extending along a first direction and a data line extending along a second direction; the reciprocating line segment extends along the first direction and the second direction in sequence. According to the arrangement of the embodiment of the invention, on one hand, the wires in the display panel generally extend along the first direction and the second direction, and the wires of the broken wire detection lines also extend along the first direction and the second direction, so that the reasonable utilization of the wire distribution space of the display panel is facilitated, and the wire distribution design of the display panel is simplified; on the other hand, the wire section extending along the first direction can detect the broken wire of the first direction, and the wire section extending along the second direction can detect the broken wire of the second direction, so that the detection range of the broken wire detection line is further enlarged.
Further, the display area is provided with a scanning line extending along a first direction and a data line extending along a second direction; the reciprocating line segment extends along the first direction, or the reciprocating line segment extends along the second direction.
Further, the gate driving circuit includes a thin film transistor, and the disconnection detection line and the source/drain layer of the thin film transistor are disposed in the same layer. The source and drain layers are the metal layers closest to the light emitting side of the display panel, so that compared with other metal layers, the wiring on the source and drain layers is more easily affected by ESD to cause disconnection. According to the embodiment of the invention, the disconnection detection line is arranged on the source drain electrode layer, so that the disconnection detection line and the wiring on the source drain electrode layer can be disconnected simultaneously, the probability of ESD disconnection and missing judgment is further reduced, and the accuracy of judging ESD disconnection is improved.
Furthermore, the multi-stage gate driving circuits are located in non-display areas on at least two sides of the display area, at least two broken line detection lines are provided, and each broken line detection line at least surrounds the gate driving circuit located on one side of the display area. By the arrangement, the position where the broken line occurs can be judged from the at least two broken line detection lines, particularly on which side of the non-display area, so that the accuracy of broken line detection is enhanced.
Furthermore, the multi-stage gate driving circuit is located in the non-display area on at least two sides of the display area, and the broken line detection line is one. By means of the arrangement, whether the display panel is broken or not can be judged by judging the bright and dark states of the pixels connected with the corresponding data lines, and the judging process is simple.
Furthermore, the display area is also provided with a data line;
the non-display area is provided with a transistor switch, a first bonding pad and a second bonding pad; the gate of the transistor switch is connected to the first pad, the first pole of the transistor switch is electrically connected to the data line, the second pole of the transistor switch is connected to the first end of the wire break detection line, and the second end of the wire break detection line is connected to the second pad. With the arrangement, the breakage condition of the broken line detection line can be judged by observing the bright lines or the dark lines of the pixels, and the signal detection equipment 20 is not required to be used for observation, so that the detection cost is reduced.
Accordingly, the present invention also provides a display device comprising: a display panel according to any of the embodiments of the present invention.
According to the embodiment of the invention, the broken line detection line is arranged in the non-display area of the display panel, and other wires in the broken line detection line and the non-display area are influenced by the same ESD, so that the breakage condition of other wires can be judged by detecting whether the broken line detection line is broken or not. Therefore, the embodiment of the invention realizes the effect of detecting ESD broken lines, can intercept the display panel with bad ESD broken lines in time in the production process of the display panel, improves the yield of the display panel, and avoids performing subsequent manufacturing process on the display panel with bad ESD broken lines, thereby being beneficial to reducing the production cost. And the embodiment of the invention arranges the broken line detection lines around the multi-stage gate drive circuit, which is equivalent to that the broken line detection lines are distributed in the whole area of the non-display area at one side of the display area, and the broken line detection lines can detect not only the ESD broken lines positioned at the edge of the non-display area close to the frame, but also the ESD broken lines positioned at the edge of the non-display area close to the display area. In addition, the wire breakage detection line provided by the embodiment of the invention can also be used for detecting cracks of the display panel.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic wiring diagram of a disconnection detection 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 according to an 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 schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view taken along line A-A in FIG. 8;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Embodiments of the present invention provide a display panel, which may be an organic light-Emitting Diode (OLED) display panel or a liquid crystal display panel. Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. Referring to fig. 1, the display panel includes: a substrate 100, a multi-stage gate driving circuit 200, and a wire breakage detection line 300. The substrate 100 includes a display region 110 and a non-display region 120, and the multi-stage gate driving circuit 200 and the disconnection detecting line 300 are located in the non-display region 120 of the substrate 100.
Here, as shown in fig. 1, the display area is rectangular, the non-display area 120 is located on both the left and right sides and both the upper and lower sides of the display area 110, and the gate driving circuit 200 is located on both the left and right sides of the display area 110. The technology of disposing the gate driving circuit 200 on the display panel is referred to as gip (gate driver IN panel), and this configuration of the gate driving circuit 200 can save scan chips and reduce the cost of the display panel. In the GIP technology, the gate driving circuit 200 is disposed at one side or both sides of the display region 110 of the display panel to form the non-display region 120. That is, the non-display region 120 is mainly used to dispose the gate driving circuit 200, and thus it can be seen that the disposition of the gate driving circuit 200 is generally distributed in the entire region of the non-display region 120 on at least one side of the display region 110.
At one side of the display region 110, the disconnection detecting lines 300 surround the multi-stage gate driving circuits 200, and may be specifically surrounded in such a manner that a part of the gate driving circuits 200 as a whole is surrounded by the disconnection detecting lines 300 and the whole gate driving circuits 200 as a whole is surrounded by the disconnection detecting lines 300. The specific form of the wire breakage detection line 300 surrounding the multi-stage gate driving circuit 200 is various, and will be described in detail in the following embodiments. In any surrounding manner, the broken line detection lines 300 are not only distributed at the edge of the non-display area 120 close to the frame, but also arranged at the edge of the non-display area 120 close to the display area 110, that is, the broken line detection lines 300 are distributed in the whole area of the non-display area 120 at one side of the display area 110.
Since the wire breakage detection line 300 is located in the non-display area 120 of the display panel, and other wires in the wire breakage detection line 300 and the non-display area 120 are affected by the same ESD, the breakage of other wires can be determined by detecting whether the wire breakage detection line 300 is broken. Therefore, the embodiment of the invention realizes the effect of detecting ESD broken lines, can intercept the display panel with bad ESD broken lines in time in the production process of the display panel, improves the yield of the display panel, and avoids performing subsequent manufacturing process on the display panel with bad ESD broken lines, thereby being beneficial to reducing the production cost. In addition, the disconnection detection lines 300 are arranged around the multi-stage gate driving circuit 200 in the embodiment of the present invention, which is equivalent to the disconnection detection lines 300 distributed in the whole area of the non-display area 120 at one side of the display area 110, and the disconnection detection lines 300 can detect not only ESD disconnection located at the edge of the non-display area 120 close to the frame, but also ESD disconnection located at the edge of the non-display area 120 close to the display area 110. In addition, the wire breakage detection line 300 provided by the embodiment of the invention can also be used for detecting cracks of the display panel.
In the above embodiments, there are various methods for detecting whether or not the wire breakage detection line 300 is broken, and some of them will be described below, but the present invention is not limited thereto.
Fig. 2 is a schematic wiring diagram for detecting a disconnection according to an embodiment of the present invention. Referring to fig. 2, in one embodiment of the present invention, one end 301 of the wire breakage detection line 300 is connected to the signal output terminal 21 of the signal detection device 20, and the other end 302 of the wire breakage detection line 300 is connected to the signal detection terminal 22 of the signal detection device 20. When the signal output end 21 of the signal detection device 20 outputs a signal and the signal detection end 22 detects the same signal, it can be determined that the broken wire detection line 300 is not broken; when the signal output terminal 21 of the signal detection device 20 outputs a signal and the signal detection terminal 22 does not detect the same signal, it can be determined that the wire breakage detection line 300 is broken.
Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 3, in one embodiment of the present invention, the display area 110 is further provided with a data line 400, and the non-display area 120 is provided with a first transistor switch 510, a first pad 610, and a second pad 620. The gate of the first transistor switch 510 is connected to the first pad 610, the first pole of the first transistor switch 510 is electrically connected to the data line 400, the second pole of the first transistor switch 510 is connected to the first end of the wire breakage detection line 300, and the second end of the wire breakage detection line 300 is connected to the second pad 620.
Among them, the first transistor switch 510, the first pad 610 and the second pad 620 constitute a disconnection detecting circuit of the display panel. The first pad 610 provides a control signal to the gate of the first transistor switch 510 to control the turning on and off of the first transistor switch 510. Specifically, when ESD disconnection of the display panel is detected, the first transistor switch 510 is controlled to be turned on, the second pad 620 sends a detection signal to the second end of the disconnection detection line 300, if the disconnection detection line 300 is not broken, the detection signal is transmitted to the first end of the disconnection detection line 300 along the disconnection detection line 300 and sent to the data line 400 through the first transistor switch 510, and a row of pixels corresponding to the data line 400 displays a bright line (or a dark line); if the broken line detection line 300 is broken, the detection signal cannot be transmitted to the data line 400, no signal is input to the data line 400, and a row of pixels corresponding to the data line 400 displays a dark line (or a bright line); when the display panel displays normally, the first transistor switch 510 is controlled to be turned off.
The embodiment of the invention is arranged in such a way that the breakage condition of the broken line detection line 300 can be judged by observing the bright lines or the dark lines of the pixels, and the signal detection equipment 20 is not required to be used for observation, thereby reducing the detection cost.
Further, in one embodiment of the present invention, the disconnection detection circuit is shared with the ct (cell test) detection circuit. The CT detection circuit is used for carrying out a point screen test on the display panel before the display panel leaves a factory so as to detect the lighting condition of the pixels. Specifically, the non-display region 120 of the display panel is further provided with a plurality of second transistor switches 520, gates of the second transistor switches 520 are connected to the first pads 610, first poles of the second transistor switches 520 are connected to the corresponding data lines 400, and second poles of the second transistor switches 520 are connected to the second pads 620.
The second transistor switch 520, the first pad 610 and the second pad 620 form a CT detection circuit, the disconnection detection circuit and the CT detection circuit share the first pad 610 and the second pad 620, and the first transistor switch 510 and the second transistor switch 520 can be manufactured in the same process. And, ESD disconnection detection and CT detection of the display panel can be completed in the same detection step. Illustratively, when the panel is turned on, the first transistor switch 510 and the second transistor switch 520 are controlled to be turned on, the second pad 620 sends a detection signal to the second end of the wire break detection line 300 and the second pole of the second transistor switch 520, the detection signal is sent to the corresponding data line 400 through the second transistor switch 520, if the wire break detection line 300 is not broken, the detection signal is transmitted to the first end of the wire break detection line 300 along the wire break detection line 300 and sent to the data line 400 through the first transistor switch 510, and each pixel is turned on; if the broken line detection line 300 is broken, the detection signal cannot be transmitted to the data line 400, the data line 400 has no signal input, and a row of pixels corresponding to the data line 400 display a dark line, so as to judge that the display panel has broken lines; when the display panel displays normally, the first transistor switch 510 and the second transistor switch 520 are controlled to be turned off.
The embodiment of the invention is provided with the disconnection detection circuit and the CT detection circuit, on one hand, the first bonding pad 610 and the second bonding pad 620 are not needed to be additionally arranged, and the first transistor switch 510 and the second transistor switch 520 can be manufactured in the same process, thereby further reducing the manufacturing cost of the display panel; on the other hand, ESD disconnection detection and CT detection of the display panel can be completed in the same detection step, and the detection step of the display panel is simplified.
In the above embodiments, there are various ways of disposing the disconnection detection line 300 around the multi-stage gate driving circuit 200, and some of them will be described below, but the present invention is not limited thereto.
Referring to fig. 1 to 3, in one embodiment of the present invention, each stage of the gate driving circuits 200 is surrounded by the disconnection detecting line 300, so that the disconnection detecting line 300 surrounds all the gate driving circuits 200 on the display panel. Among them, three sides of the gate driving circuits 200 located at the first and last stages are provided with the disconnection detection lines 300, and two sides of the gate driving circuits 200 located at the middle stage are provided with the disconnection detection lines 300.
Fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 4, in an embodiment of the present invention, the wire breakage detection line 300 includes reciprocating line segments 310, and each reciprocating line segment 310 corresponds to at least one stage of the gate driving circuit 200. Each reciprocating segment 310 is exemplarily shown in fig. 4 corresponding to three stages of gate driving circuits 200. The reciprocating line segment 310 means that two line segments of the line segment are located at one side of the gate driving circuit 200, and one ends of the two line segments are connected, that is, the line segment performs reciprocating winding along the edge of the gate driving circuit 200. Taking fig. 4 as an example, the three-level gate driving circuits 200 form a group, and the wire breakage detection line 300 further includes a single wire segment 320, and the reciprocating segment 310 and the single wire segment 320 are connected end to end and surround each group of gate driving circuits 200. The wire breakage detection line 300 comprises the reciprocating wire segment 310, and therefore the wire design that the wire breakage detection line 300 sequentially surrounds a plurality of groups of gate drive circuits 200 is achieved.
With continued reference to fig. 4, for a group of gate driving circuits 200 formed by three stages of gate driving circuits, the left and right sides of the gate driving circuit 200 located in the middle are provided with disconnection detection lines 300, and three sides of the other two gate driving circuits 200 are provided with disconnection detection lines 300. As can be seen, each reciprocating line segment 310 corresponds to at least two stages of gate driving circuits 200, and compared with a corresponding stage of gate driving circuit 200, the line of the broken line detection line 300 is simpler and occupies less space.
It should be noted that each reciprocating line segment 310 according to the embodiment of the present invention corresponds to at least one stage of the gate driving circuit 200, including the situation shown in fig. 4, that is, one side of each gate driving circuit 200 in a group of gate driving circuits 200 is provided with the reciprocating line segment 310. In other embodiments, each reciprocating line segment 310 corresponds to at least one stage of the gate driving circuit 200, and as shown in fig. 5, a reciprocating line segment 310 is disposed on one side of a part of the gate driving circuits 200 in a group of the gate driving circuits 200.
Fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 6, in an embodiment of the invention, each reciprocating segment 310 corresponds to a stage of the gate driving circuit 200. That is, the four sides of each gate driving circuit 200 are provided with the wire breakage detecting lines 300, so that the wire breakage at each position of the edge of the panel can be detected by the wire breakage detecting lines 300, and the detection range of the wire breakage detecting lines 300 is further expanded.
Further, with continued reference to fig. 6, in one embodiment of the present invention, the display area 110 is provided with a scan line 700 extending along the first direction X and a data line 400 extending along the second direction Y, and the reciprocating segment 310 extends along the first direction X and the second direction Y. As shown in fig. 6, the reciprocating line segment 310 includes a first segment 311 and a second segment 312 extending along the first direction X, and a third segment 313 and a fourth segment 314 extending along the second direction Y. One end of the second segment 312 is connected to the single-wire segment 320, a second end of the second segment 312 is connected to a first end of the fourth segment 314, a second end of the fourth segment 314 is connected to a first end of the third segment 313, a second end of the third segment 313 is connected to a first end of the first segment 311, and a second end of the first segment 311 is connected to another single-wire segment 320. Thus, the cooperation of the reciprocating trace segment 310 and the single trace segment 320 enables a trace design around the gate driving circuit 200. Accordingly, the single-wire trace segment 320 extends in the first direction X or the second direction Y.
In addition, the embodiment of the invention is arranged in such a way, on one hand, since the wires in the display panel generally extend along the first direction X and the second direction Y, and the wires of the broken wire detection line 300 also extend along the first direction X and the second direction Y, the invention is beneficial to reasonably utilizing the wire space of the display panel and simplifying the wire design of the display panel; on the other hand, the trace segment extending along the first direction X can detect the disconnection of the first direction X, and the trace segment extending along the second direction Y can detect the disconnection of the second direction Y, so as to further increase the detection range of the disconnection detection line 300.
Fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 7, further, in an embodiment of the present invention, the reciprocating segment 310 extends along the first direction X. As shown in fig. 7, the reciprocating line segment 310 includes a fifth segment 315 and a sixth segment 316 extending along the first direction X. One end of the fifth segment 315 is connected to a single wire segment 320, a second end of the fifth segment 315 is connected to a first end of the sixth segment 316, and a second end of the sixth segment 316 is connected to another single wire segment 320. Thus, the cooperation of the reciprocating trace segment 310 and the single trace segment 320 enables a trace design around the gate driving circuit 200.
It should be noted that, although fig. 7 exemplarily shows that the reciprocating line segment 310 extends along the first direction X, the present invention is not limited thereto, and in other embodiments, the reciprocating line segment 310 may also be arranged to extend along the second direction Y.
In the above embodiments, with reference to fig. 1 to 7, the disconnection detection line 300 is exemplarily shown as one line, and the disconnection detection line 300 is connected to one data line 400 through the first transistor switch 510, so that whether or not a disconnection occurs in the display panel can be determined by determining the bright and dark states of the pixels connected to the corresponding data line 400, and the determination process is relatively simple.
It should be noted that, although the broken line detection lines 300 are illustrated as one line and the number of the data lines 400 connected to the broken line detection lines 300 is illustrated as one line in the above embodiments, the present invention is not limited thereto, and in other embodiments, the number of the data lines 400 connected to the broken line detection lines 300 may be two, and when the broken line detection lines 300 are broken, the two data lines 400 may simultaneously display one dark line (or bright line), so that whether or not the broken line is generated can be more easily determined from the dot-and-screen result.
Fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 8, in one embodiment of the present invention, the multi-stage gate driving circuits 200 are located in the non-display region 120 at least at two sides of the display region 110, and at least two wire breakage detecting lines 300 (the number of the wire breakage detecting lines 300 is exemplarily shown as two in fig. 8), each wire breakage detecting line 300 surrounding at least the gate driving circuit 200 at one side of the display region 110. With this arrangement, it is possible to determine from the at least two disconnection detecting lines 300, respectively, on which side of the non-display region the position where the disconnection occurred, specifically, thereby enhancing the accuracy of the disconnection detection.
With continued reference to FIG. 8, in one embodiment of the present invention, a disconnection detection circuit is used in common with the CT detection circuit. The numbers of the first transistor switches 510, the first pads 610, and the second pads 620 are also set to at least two corresponding to the at least two wire breakage detecting lines 300 to match the detection of the at least two wire breakage detecting lines 300.
Fig. 9 is a schematic sectional view taken along a-a in fig. 8. Referring to fig. 9, in an embodiment of the present invention, the gate driving circuit 200 includes a thin film transistor 800, and the disconnection detecting line 300 is disposed in the same layer as the source/drain layer 103 of the thin film transistor 800. Illustratively, the display panel includes three metal layers, specifically, a first metal layer including the gate layer 101, a second metal layer including the capacitor plate 102, and a third metal layer including the source drain layer 103. The third metal layer is a metal layer closest to the light-emitting side of the display panel, and therefore, compared with the first metal layer and the second metal layer, the wiring on the third metal layer is more easily affected by the ESD to cause disconnection. According to the embodiment of the invention, the broken line detection line 300 is arranged on the third metal layer, so that the broken line detection line 300 and the wiring on the third metal layer can be broken simultaneously, the probability of ESD broken line missing judgment is further reduced, and the accuracy of judging ESD broken line is improved.
The embodiment of the invention also provides a display device, which can be a mobile phone, a tablet personal computer, intelligent wearable equipment, a computer, a television, an inquiry machine and the like. Fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention. Referring to fig. 10, the display device provided in the embodiment of the present invention includes the display panel 1 provided in any embodiment of the present invention, and the technical principle and the generated technical effect are similar, which are not described herein again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display panel, comprising:
a substrate including a display region and a non-display region;
the multi-stage gate driving circuit is positioned in the non-display area of the substrate;
the broken line detection line is positioned in the non-display area of the substrate; the disconnection detecting lines surround the plurality of stages of the gate driving circuits at one side of the display region.
2. The display panel according to claim 1, wherein each stage of the gate driving circuit is surrounded by the disconnection detecting line.
3. The display panel according to claim 2, wherein the wire break detection lines comprise reciprocating line segments, each reciprocating line segment corresponding to at least one stage of the gate driving circuits.
4. The display panel according to claim 3, wherein the display region is provided with scan lines extending in a first direction and data lines extending in a second direction;
the reciprocating line segment extends along the first direction and the second direction in sequence.
5. The display panel according to claim 3, wherein the display region is provided with scan lines extending in a first direction and data lines extending in a second direction;
the reciprocating line segment extends along the first direction, or the reciprocating line segment extends along the second direction.
6. The display panel according to claim 1, wherein the gate driving circuit includes a thin film transistor, and the disconnection detecting line is disposed in the same layer as a source/drain layer of the thin film transistor.
7. The display panel according to claim 1, wherein the plurality of stages of gate driving circuits are located in the non-display region on at least two sides of the display region, and wherein the number of the line break detecting lines is at least two, each of the line break detecting lines surrounding at least the gate driving circuit located on one side of the display region.
8. The display panel according to claim 1, wherein the plurality of stages of gate driving circuits are located in the non-display region on at least two sides of the display region, and one of the disconnection detecting lines is provided.
9. The display panel according to claim 1, wherein the display region is further provided with a data line;
the non-display area is provided with a transistor switch, a first bonding pad and a second bonding pad; the gate of the transistor switch is connected to the first pad, the first pole of the transistor switch is electrically connected to the data line, the second pole of the transistor switch is connected to the first end of the wire break detection line, and the second end of the wire break detection line is connected to the second pad.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN201911157712.3A CN110827728B (en) | 2019-11-22 | 2019-11-22 | Display panel and display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111429849A (en) * | 2020-04-29 | 2020-07-17 | 京东方科技集团股份有限公司 | Display panel, display device, detection device and hole periphery crack detection method |
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