CN110853558A - Flexible display screen, detection method thereof and display device - Google Patents
Flexible display screen, detection method thereof and display device Download PDFInfo
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- CN110853558A CN110853558A CN201911317145.3A CN201911317145A CN110853558A CN 110853558 A CN110853558 A CN 110853558A CN 201911317145 A CN201911317145 A CN 201911317145A CN 110853558 A CN110853558 A CN 110853558A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
Abstract
The invention provides a flexible display screen, a detection method and a display device thereof, wherein the flexible display screen is divided into a display area and a non-display area surrounding the display area; the display area comprises data lines and grid lines which are arranged in a crossed manner, and the non-display area comprises peripheral driving circuits which are respectively arranged at two sides of each grid line and a testing circuit which is electrically connected with the peripheral driving circuits; the peripheral driving circuit comprises two groups of cascaded shift registers, one shift register is electrically connected with one grid line, the testing circuit comprises a plurality of testing switches and a plurality of testing lines, one testing switch is electrically connected with one shift register, the testing lines are connected with the testing switches in a one-to-one correspondence mode, the testing lines are at least arranged on the outer edge of the non-display area and are provided with line segments consistent with the extending direction of the data lines, and the testing circuit is used for loading signals to the electrically connected shift registers when the positions of the connected testing lines are broken, so that the corresponding grid lines are loaded with lighting signals.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible display screen, a detection method thereof and a display device.
Background
During production or transportation, the edge of the flexible display screen is easily broken due to collision or extrusion, and it becomes important to detect the breakage and locate the position of the breakage.
Disclosure of Invention
The invention provides a flexible display screen, a detection method thereof and a display device, which are used for detecting the fracture of the edge of the flexible display screen and positioning the position of the fracture.
In a first aspect, an embodiment of the present invention provides a flexible display screen, which is divided into a display area and a non-display area surrounding the display area; the display area comprises data lines and grid lines which are arranged in a crossed mode, and the non-display area comprises peripheral driving circuits which are arranged on two sides of each grid line respectively and a testing circuit which is electrically connected with the peripheral driving circuits;
the peripheral driving circuit comprises two groups of cascaded shift registers, one shift register is electrically connected with one grid line, the test circuit comprises a plurality of test switches and a plurality of test lines, one test switch is electrically connected with one shift register, the test lines are connected with the test switches in a one-to-one correspondence mode, the test lines are at least arranged on the outer edge of the non-display area and are provided with line segments consistent with the extending direction of the data lines, and the test circuit is used for loading signals to the electrically connected shift registers when the positions of the connected test lines are broken so as to load lighting signals to the corresponding grid lines.
Optionally, the test switch includes a thin film transistor, wherein a source and a gate of the thin film transistor are electrically connected to different ends of the test line, respectively, a drain of the thin film transistor is electrically connected to the shift register, and a source of the thin film transistor is electrically connected to the power signal line.
Optionally, the test switch is an N-type thin film transistor, and the power signal line provides a low potential signal; or, the test switch is a P-type thin film transistor, and the power signal line provides a high potential signal.
Optionally, the shift register and the test switch are arranged in a one-to-one correspondence.
Optionally, an orthographic projection of each test line on a side parallel to the data line forms a continuous line segment.
Optionally, the non-display area has a bonding area disposed at either end of the data line extension, and the test line is disposed in the non-display area at the other end of the data line extension, and has a line segment in accordance with the extending direction of the gate line.
Alternatively, the test line provided in the non-display region of the other end portion of the data line extension is electrically connected to the nearest test switch.
Optionally, the test line and the gate line are disposed in the same layer.
In a second aspect, embodiments of the present invention further provide a display device, including the flexible display screen as described above.
In a third aspect, an embodiment of the present invention further provides a method for detecting a flexible display screen, where the method includes:
loading a cut-off signal to the test switch;
detecting whether a bright line exists in a display area of the flexible display screen;
and when the flexible display screen is determined to have the bright line, determining that the position of the test line corresponding to the grid line with the bright line is broken according to the position of the bright line.
The invention has the following beneficial effects:
the invention provides a flexible display screen, a detection method thereof and a display device.A peripheral driving circuit is respectively arranged at two sides of each grid line in a non-display area, the peripheral driving circuit comprises at least two groups of cascaded shift registers, one shift register is electrically connected with one grid line, for example, in N shift registers, each shift register is electrically connected with one grid line, and N is a positive integer greater than or equal to 2. In addition, in the non-display area, the peripheral driver circuit is electrically connected to a test circuit including a plurality of test switches and a plurality of test lines, and specifically, one test switch is electrically connected to one shift register. In addition, the test lines are connected with the test switches in a one-to-one correspondence mode, and the test lines are at least arranged on the outer edge of the non-display area and provided with line segments consistent with the extending direction of the data lines. Once any test line position breaks, the test circuit connected with the test line loads signals to the electrically connected shift register, so that the corresponding grid line loads lighting signals, and the position corresponding to the grid line in the non-display area is the position where the flexible display screen breaks.
Drawings
Fig. 1 is a schematic structural diagram of a flexible display screen provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another flexible display screen provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of one of the circuit configurations included in the area C of FIG. 2;
FIG. 4 is a schematic diagram of one of the circuit configurations included in the area C of FIG. 2;
FIG. 5 is a schematic diagram of one of the circuit structures included in the area C of FIG. 2;
FIG. 6 is a schematic diagram of one of the circuit structures included in the area C of FIG. 2;
fig. 7 is a schematic structural diagram of another flexible display screen provided in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another flexible display screen provided in an embodiment of the present invention;
fig. 9 is a process flow diagram of disposing the test line and the gate line in the same layer in the embodiment of the invention;
FIG. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 11 is a flowchart of a method for detecting a flexible display screen according to an embodiment of the present invention.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
It should be noted that the sizes and shapes of the figures in the drawings are not to be considered true scale, but are merely intended to schematically illustrate the present invention. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
In the prior art, for a flexible OLED (Organic light emitting diode) Display, PCD (Panel Crack Detect) metal traces are often used to Detect whether there is Crack (i.e. break) at the edge of the flexible OLED Display, specifically, the PCD metal traces are arranged around a screen for a circle, one end of the PCD metal trace is connected to a G pixel (i.e. green pixel), and the other end of the PCD metal trace is connected to a test signal, if Crack occurs at the edge of the screen, the PCD metal trace is broken, which causes the signal line on the G pixel to break, and an OPEN state occurs, so that a specific black screen G bright line occurs, and the flexible OLED Display is determined to be bad. Therefore, the detection efficiency of the Crack in the whole process is low, and the position of the Crack cannot be accurately positioned.
In view of this, the embodiment of the present invention provides a flexible display screen, which is used for detecting whether a fracture exists at an edge of the flexible display screen and positioning a position where the fracture exists.
Specifically, as shown in fig. 1, one of the structural diagrams of the flexible display screen provided by the embodiment of the present invention is specifically divided into a display area a and a non-display area B surrounding the display area a; the display area A comprises data lines and grid lines 1 which are arranged in a crossed mode, and the non-display area B comprises peripheral driving circuits 10 which are arranged on two sides of each grid line 1 respectively and a testing circuit 20 which is electrically connected with the peripheral driving circuits 10; as shown in fig. 1, a direction indicated by an arrow X is a data line extending direction, and a direction indicated by an arrow Y is a gate line 1 extending direction.
The peripheral driving circuit 10 includes two cascaded shift registers 30 (i.e., EOA shown in fig. 1), one shift register 30 is electrically connected to one gate line 1, the testing circuit 20 includes a plurality of testing switches 201 and a plurality of testing lines 202, one testing switch 201 is electrically connected to one shift register 30, the testing lines 202 are connected to the testing switches 201 in a one-to-one correspondence manner, the testing lines 202 are at least disposed at an outer edge of the non-display area B and have line segments in a direction consistent with an extending direction of the data lines, and the testing circuit 20 is configured to load a signal to the electrically connected shift register 30 when a position of the connected testing line 202 is broken, so that the corresponding gate line 1 is loaded with a lighting signal. The number of the shift registers 30 in the flexible display screen shown in fig. 1 is 4, each shift register 30 is electrically connected to one gate line 2, and each shift register 30 is electrically connected to one test switch 201. In addition, the test lines 202 are connected to the test switches 201 in a one-to-one correspondence, and the test lines 202 are at least arranged on the outer edge of the non-display area and have line segments consistent with the extending direction of the data lines. The test line 202 is a partial line segment that is consistent along the extending direction of the data line, and "consistent" here means approximately consistent, not absolutely consistent. The test line 202 may be disposed entirely at the outer edge of the non-display area, or may be disposed partially at the outer edge of the non-display area, which is not limited herein. In a specific implementation process, once any test line 202 is broken, the test circuit 20 connected to the test line loads a signal to the electrically connected shift register 30, so that the corresponding gate line loads a lighting signal, and the position of the non-display region corresponding to the gate line 2 is the position where the flexible display screen is broken, so that the flexible display screen is confirmed to be broken and the flexible display screen is positioned to be broken.
In the embodiment of the present invention, as shown in another schematic structural diagram of the flexible display panel shown in fig. 2, specifically, the test switch 201 includes a thin film transistor, wherein a source and a gate of the thin film transistor are electrically connected to different ends of the test line 202, so that the thin film transistor is electrically connected to the test line 202, a drain of the thin film transistor is electrically connected to the shift register 30, so that the thin film transistor is electrically connected to the shift register 30, and a source of the thin film transistor is electrically connected to the power signal line 2, so that the control of the switching state of the thin film transistor can be realized by adjusting the potential of the power signal line 2, and further, the detection of the breaking condition of the test line 202 can be realized.
In the embodiment of the present invention, the thin film transistor may be an N-type thin film transistor, and may also be a P-type thin film transistor, specifically, the test switch 201 is an N-type thin film transistor, and the power signal line 2 provides a low potential signal; fig. 3 and 4 are schematic structural diagrams of one of the circuit structures included in the region C in fig. 2, for example, when the potential of the low potential signal VGL is-7V, the threshold voltage Vth of the N-type thin film transistor is 2V, at this time, if the gate voltage VG of the N-type thin film transistor is-7V, the source voltage VS is- 7V, the gate-source voltage VGs-VG is VG-VS is 0V, and at this time, VGs is less than Vth, the N-type thin film transistor is in an off state, which indicates that the edge of the flexible display panel where the test line 202 is located is not broken, and at this time, one of the circuit structures included in the region C in fig. 2 is shown in fig. 3. If the edge of the flexible display screen where the test line 202 is located is broken, at this time, VG is 0V, VGs-VS is 0V- (-7V) ═ 7V, and VGs is greater than Vth, the N-type thin film transistor is in a conducting state, at this time, a bright line is generated in the display area corresponding to the test line 202, and at this time, one of the structure diagrams of the circuit structures included in the area C in fig. 2 is shown in fig. 4. In a specific implementation process, in an initial state, a cut-off signal can be loaded on the N-type thin film transistor, and once it is determined that a bright line exists on the flexible display screen, the position of the test line 202 corresponding to the gate line 2 where the bright line appears can be determined to be broken according to the position of the bright line.
In the embodiment of the present invention, the test switch 201 is a P-type thin film transistor, and the power signal line provides a high potential signal. Fig. 5 and 6 are schematic diagrams of one of the circuit structures included in the region C in fig. 2, for example, when the potential of the high potential signal VGH is 7V, the threshold voltage Vth of the P-type thin film transistor is-2V, and at this time, if the gate voltage VG of the P-type thin film transistor is 7V, the source voltage VS is 7V, the gate-source voltage VGs is VG-VS is 0V, and at this time, VGs is greater than Vth, the P-type thin film transistor is in an off state, and at this time, it indicates that the edge of the flexible display panel where the test line 202 is located is not broken. At this time, one of the circuit structures included in the region C in fig. 2 is schematically illustrated in fig. 5. If the edge of the flexible display screen where the test line 202 is located is broken, at this time, VG is 0V, VGs-VS is 0V-7V, and VGs is smaller than Vth, the P-type thin film transistor is in a conducting state, at this time, a bright line is generated in the display area corresponding to the test line 202, and at this time, one of the structure diagrams of the circuit structure included in the area 1 in fig. 2 is shown in fig. 6. In a specific implementation process, in an initial state, a cut-off signal can be loaded on the P-type thin film transistor, and once it is determined that a bright line exists on the flexible display screen, the position of the test line 202 corresponding to the gate line 1 where the bright line appears can be determined to be broken according to the position of the bright line.
In the embodiment of the present invention, the shift register 30 and the test switches 201 are arranged in a one-to-one correspondence, so that the test switches 201 can load signals to the shift register 30, and further determine whether the edge of the flexible display screen is broken.
In the embodiment of the invention, as shown in fig. 7, which is another structural schematic diagram of the flexible display screen, the orthographic projection of each test line 202 on the side parallel to the data line forms a continuous line segment. In this way, each test line 202 fully covers the outer edge of the flexible display screen non-display area B, so that the fracture of the outer edge of the flexible display screen non-display area B can be comprehensively detected, and the fracture detection precision is improved.
In the embodiment of the present invention, as shown in fig. 8, another structural diagram of the flexible display panel is shown, specifically, the non-display area B has a bonding area F disposed at either end of the data line extension, and a test line 202 is disposed in the non-display area B at the other end of the data line extension, and the test line 202 has a line segment in accordance with the extending direction of the gate line 2. Therefore, the detection of the fracture in the non-display area B at the other end can be realized, and the detection precision of the fracture of the flexible display screen is improved.
In the embodiment of the present invention, as shown in fig. 8, the test line 202 disposed in the non-display region B at the other end of the data line extension is electrically connected to the nearest test switch 201. In this way, the test line 202 arranged in the non-display area B at the other end part where the data line extends is electrically connected with the nearest test switch 201, so that the signal loading of the nearest test switch 201 through the test line 202 is realized, the position of the fracture is determined by detecting the position of the bright line, and the detection precision of the fracture of the flexible screen is improved.
In the embodiment of the present invention, the test line 202 and the gate line 12 are disposed at the same layer, and as shown in fig. 9, a process flow chart for disposing the test line 202 and the gate line 2 at the same layer is shown, specifically, first, an insulating layer 4, such as a light shielding layer, a buffer layer, etc., is deposited on the base substrate 3, and then an active layer 5 is deposited on the insulating layer 4, and then, using a patterning process, a pattern of the active layer 5 is formed, wherein the pattern of the active layer 5 is mainly located at the outer edge of the non-display area B, and then a first gate insulating layer 6 is deposited on the pattern of the active layer 5, then, a first gate insulating layer 6 is patterned using a patterning process, and then a gate electrode 7 is deposited on the first gate insulating layer 6, then, using a patterning process, the gate electrode 7 is patterned, and then a second gate insulating layer 8 is deposited on the pattern of the gate electrode 7, and then an interlayer insulating layer 9 is deposited on the second gate insulating layer 8. Then, the interlayer insulating layer 9 is punched, and then a magnetron sputtering source drain electrode 11 is arranged on the interlayer insulating layer 9, wherein the source drain electrode 11 is electrically connected with the grid electrode 7 through a through hole in the interlayer insulating layer 9, so that whether the flexible display screen is broken or not can be detected through the test line 202.
Based on the same inventive concept, the embodiment of the present invention provides a display device, as shown in fig. 10, which is one of the structural schematic diagrams of the display device, and the display device includes the above-mentioned flexible display screen 100 provided in the embodiment of the present invention.
In a specific implementation process, the display device may be: any product or component with a display function, such as a mobile phone (as shown in fig. 10), a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a watch, and the like. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.
Based on the same inventive concept, an embodiment of the present invention further provides a method for detecting a flexible display screen, as shown in fig. 11, which is a flowchart of the method for detecting a flexible display screen, and the method may include:
s101: loading a cut-off signal to the test switch;
s102: detecting whether a bright line exists in a display area of the flexible display screen;
s103: and when the flexible display screen is determined to have the bright line, determining that the position of the test line corresponding to the grid line with the bright line is broken according to the position of the bright line.
In the specific implementation process, the specific implementation process from step S101 to step S103 is as follows:
first, a turn-off signal is applied to the test switch, for example, the test switch in the flexible display screen in the initial state is applied with the turn-off signal. And then detecting whether a bright line exists in the display area A of the flexible display screen, and determining that the position of the test line corresponding to the grid line with the bright line is broken according to the position of the bright line when the bright line exists in the flexible display screen.
In the embodiment of the invention, when the test switch is an N-type thin film transistor, a low-potential signal can be provided through the power signal line electrically connected with the source electrode of the N-type thin film transistor, so that loading of a cut-off signal of the test switch is realized. When the test switch is a P-type thin film transistor, a high potential signal can be provided through a power signal line electrically connected with a source electrode of the P-type thin film transistor, and loading of a cut-off signal of the test switch is further realized. The specific value of the low potential signal or the high potential signal needs to be determined according to the specific value of the threshold voltage of the thin film transistor, and any specific value may be used as long as the test switch can be loaded with the off signal finally.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A flexible display screen is characterized by being divided into a display area and a non-display area surrounding the display area; the display area comprises data lines and grid lines which are arranged in a crossed mode, and the non-display area comprises peripheral driving circuits which are arranged on two sides of each grid line respectively and a testing circuit which is electrically connected with the peripheral driving circuits;
the peripheral driving circuit comprises two groups of cascaded shift registers, one shift register is electrically connected with one grid line, the test circuit comprises a plurality of test switches and a plurality of test lines, one test switch is electrically connected with one shift register, the test lines are connected with the test switches in a one-to-one correspondence mode, the test lines are at least arranged on the outer edge of the non-display area and are provided with line segments consistent with the extending direction of the data lines, and the test circuit is used for loading signals to the electrically connected shift registers when the positions of the connected test lines are broken so as to load lighting signals to the corresponding grid lines.
2. The flexible display panel according to claim 1, wherein the test switch includes a thin film transistor, wherein a source electrode and a gate electrode of the thin film transistor are electrically connected to different ends of the test line, respectively, a drain electrode of the thin film transistor is electrically connected to the shift register, and a source electrode of the thin film transistor is electrically connected to the power signal line.
3. The flexible display panel of claim 2, wherein the test switch is an N-type thin film transistor, and the power signal line provides a low potential signal; or, the test switch is a P-type thin film transistor, and the power signal line provides a high potential signal.
4. The flexible display screen of claim 1, wherein the shift registers and the test switches are arranged in a one-to-one correspondence.
5. The flexible display screen of claim 1, wherein an orthographic projection of each test line on a side parallel to the data lines forms a continuous line segment.
6. The flexible display panel according to claim 1, wherein the non-display area has a bonding area provided at either end portion where the data line extends, and the test line is provided in the non-display area at the other end portion where the data line extends, the test line having a line segment in accordance with an extending direction of the gate line.
7. The flexible display panel according to claim 6, wherein the test line provided in the non-display area at the other end portion from which the data line extends is electrically connected to a nearest test switch.
8. The flexible display screen of any one of claims 1-7, wherein the test lines are disposed in a same layer as the gate lines.
9. A display device, characterized in that it comprises a flexible display screen according to any one of claims 1-8.
10. A method for inspecting a flexible display screen according to any one of claims 1 to 8, comprising:
loading a cut-off signal to the test switch;
detecting whether a bright line exists in a display area of the flexible display screen;
and when the flexible display screen is determined to have the bright line, determining that the position of the test line corresponding to the grid line with the bright line is broken according to the position of the bright line.
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| CN111681609A (en) * | 2020-06-11 | 2020-09-18 | 武汉华星光电半导体显示技术有限公司 | Display device and driving circuit detection method |
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| CN208111041U (en) * | 2018-05-17 | 2018-11-16 | 北京京东方技术开发有限公司 | display panel and display device |
| WO2019218709A1 (en) * | 2018-05-17 | 2019-11-21 | 京东方科技集团股份有限公司 | Display panel and crack detection method therefor, and display device |
| CN109142447A (en) * | 2018-08-30 | 2019-01-04 | 上海天马微电子有限公司 | Display panel and its crack detecting method, display device |
| CN110097841A (en) * | 2019-03-29 | 2019-08-06 | 昆山国显光电有限公司 | Display panel |
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| CN111681609A (en) * | 2020-06-11 | 2020-09-18 | 武汉华星光电半导体显示技术有限公司 | Display device and driving circuit detection method |
| US11688313B2 (en) | 2020-06-11 | 2023-06-27 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display device and method of detecting driving circuit |
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