CN108920009B - Touch display screen, display device and repairing method thereof - Google Patents
Touch display screen, display device and repairing method thereof Download PDFInfo
- Publication number
- CN108920009B CN108920009B CN201810818238.3A CN201810818238A CN108920009B CN 108920009 B CN108920009 B CN 108920009B CN 201810818238 A CN201810818238 A CN 201810818238A CN 108920009 B CN108920009 B CN 108920009B
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- touch
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- routing
- display screen
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
Abstract
The application discloses a touch display screen, a display device and a repairing method thereof, wherein the touch display screen comprises a display area, a driving circuit and a repairing wire, the driving circuit and the repairing wire are arranged on the periphery of the display area, a plurality of touch wires are arranged between the display area and the driving circuit, the repairing wire is arranged between a substrate base plate of the touch display screen and the touch wires, when at least one touch wire is broken, one end of the repairing wire is used for being connected with a first end of the broken touch wire connected with the driving circuit, and the other end of the repairing wire is used for being connected with a second end of the broken touch wire connected with the display area. The touch display screen can improve the utilization rate of materials and improve the yield of products.
Description
Technical Field
The present disclosure relates to the field of touch display technologies, and in particular, to a touch display screen, a display device, and a repairing method thereof.
Background
At present, the embedded touch display screen of small-size technique is more and more extensively used, compares outer hanging touch display screen, and it is higher that it not only the accuracy is higher, and is more frivolous, can avoid the outdoor visual phenomenon that reduces of outer hanging touch display screen moreover (the physical space between touch substrate and the liquid crystal substrate causes light reflection easily). The touch function of the embedded touch display screen is generally designed on the array substrate, and the touch wires in the fan-out wire routing area are positioned above the flat layer (the thickest film layer of the array substrate) and are not protected by the flat layer, so that the lines are easily scratched, broken by external force and broken by foreign matters in the manufacturing process of the array substrate. When the touch wiring is broken, the display panel can not be intercepted effectively when being lighted, and white small squares can appear on the display screen when only the module is lighted, so that the defective products can only be scrapped, the waste of materials is caused, and the yield of the products is reduced.
Therefore, it is necessary to provide a touch display screen, a display device and a repairing method thereof to solve the above technical problems.
Disclosure of Invention
The technical problem that this application mainly solved provides a touch display screen, display device and repair method thereof, and the touch display screen of this application can improve the utilization ratio of material, promotes the yield of product.
In order to solve the technical problem, a first technical scheme adopted in the present application is to provide a touch display screen, where the touch display screen includes a display area, a driving circuit and a repairing line, the driving circuit and the repairing line are located at the periphery of the display area, a plurality of touch lines are arranged between the display area and the driving circuit, the repairing line is located between a substrate of the touch display screen and the touch line, when at least one touch line is disconnected, one end of the repairing line is used for being connected with a first end of the disconnected touch line and the driving circuit, and the other end of the repairing line is used for being connected with a second end of the disconnected touch line and the display area.
In order to solve the above technical problem, a second technical solution adopted by the present application is to provide a display device, where the display device includes the touch display screen as described in any one of the above.
In order to solve the above technical problem, a third technical solution adopted by the present application is to provide a repair method for a touch display screen, where the repair method includes: detecting whether the touch wiring is broken or not; if the first end and the second end of the touch wiring are in open circuit, the two ends of the repair wiring are respectively connected with the first end and the second end.
The beneficial effect of this application is: be different from prior art's condition, the touch display screen of this application includes the display area and is located the peripheral drive circuit of display area and restores the line of walking, be provided with many touches between display area and the drive circuit and walk the line, restore the line and be located the substrate base plate of touch display screen and touch and walk between the line, when at least one touch was walked the line and is broken circuit, the one end of restoring the line was used for walking the line with the touch that opens circuit and drive circuit connection's first end is connected, the other end of restoring the line is used for walking the line with the touch that opens circuit and display area connection's second end is. Through the touch display screen of this application can improve the utilization ratio of material, promote the yield of product.
Drawings
FIG. 1 is a schematic cross-sectional view of a touch display screen provided herein;
FIG. 2 is a schematic top view of one embodiment of a touch screen display provided herein;
FIG. 3 is an enlarged schematic view of a portion of the area of FIG. 2 in the fan-out trace region;
FIG. 4 is a schematic top view of another embodiment of a touch screen display provided herein;
FIG. 5 is a schematic flowchart of an embodiment of a method for repairing a touch display screen provided in the present application;
fig. 6 is a schematic structural diagram of an embodiment of a display device provided in the present application.
Detailed Description
In order to make the purpose, technical solution and technical effects of the present application clearer and clearer, the present application is further described in detail below, and it should be understood that the specific embodiments described herein are only used for explaining the present application and are not used for limiting the present application.
The touch display screen comprises a display area and a non-display area arranged around the display area, wherein the fan-out wiring area is positioned in the non-display area, and because the touch wiring in the fan-out wiring area is positioned above a flat layer (the thickest film layer of the array substrate), the touch wiring is not protected by the flat layer, and the circuit is easily scratched, broken by external force and broken by foreign matters in the manufacturing process of the array substrate. In order to solve the technical problem that the touch wiring in the fan-out wiring area is easy to open circuit and the product yield is reduced, one end of the repair wiring is connected with the first end of the open circuit touch wiring and the first end of the drive circuit, and the other end of the repair wiring is connected with the second end of the open circuit touch wiring and the second end of the display area. The touch display screen can improve the utilization rate of materials and improve the yield of products.
Referring to fig. 1, fig. 1 is a schematic cross-sectional structure diagram of a touch display screen provided in the present application. As shown in fig. 1, the array substrate of the touch display panel includes a substrate 11, and a semiconductor layer 12, a gate insulating layer 13, a gate layer 14, a dielectric layer 15, a planarization layer 16, a common electrode layer 17, and a protection layer 19 sequentially disposed on the substrate 11. Wherein, a source/drain electrode 120 is further disposed in the display region a, and the source/drain electrode 120 is electrically connected with the semiconductor layer 12; the non-display area b is provided with a touch trace 18, and the touch trace 18 located above the flat layer 16 is easily scratched due to no protection of the flat layer 16, broken due to external force, and broken due to foreign matters in the manufacturing process of the array substrate. In order to prevent the yield of the product from being reduced due to the open circuit of the touch wire 18, the two ends of the repair wire are respectively connected with the first end and the second end of the touch wire 18 which is open circuit. Hereinafter, the description will be made in more detail with reference to the accompanying drawings.
Referring to fig. 2, fig. 2 is a schematic top view structure diagram of an embodiment of a touch display screen provided in the present application. As shown in fig. 2, the touch display screen includes a display area 21, and a driving circuit 27 and a repairing trace 25 located at the periphery of the display area 21, wherein a plurality of touch traces 24 are disposed between the display area 21 and the driving circuit 27, the repairing trace 25 is located between a substrate of the touch display screen and the touch trace 24, a first end of at least one open-circuit touch trace 241 connected to the driving circuit 27 is connected to one end of the repairing trace 25, and a second end of at least one open-circuit touch trace 241 connected to the display area 21 is connected to the other end of the repairing trace 25. One end of each touch wire 24 connected with the driving circuit 27 is electrically connected through a conductive terminal 26, and the touch wire 24 is used for transmitting an electrical signal of the driving circuit 27 to the display area 21; an array substrate driving circuit 22 is further provided at both sides of the display area 21. Only two touch traces 24 are schematically shown in fig. 2, one touch trace 242 is not broken, and the other touch trace 241 is broken, the unbroken touch trace 242 does not need to be connected to the repair trace 25, the broken touch trace 241 needs to be connected to the repair trace, and the position circled by the dotted line in fig. 2 is the broken position of the touch trace 241.
The demultiplexer 23 in fig. 2 is disposed in the non-display area, the demultiplexer 23 can save space, the display area 21 and the fan-out routing area are disposed on two sides of the demultiplexer, one side of the touch traces 24 connected to the driving circuit 27 is located in the fan-out routing area, the repair trace 25 is disposed in the fan-out routing area, and the repair trace 25 is disposed adjacent to at least one open-circuit touch trace 241.
In this embodiment, the repair trace 25 in the fan-out trace area includes a preset metal trace 251 and/or a panel test trace 252, the repair trace 25 in the fan-out trace area and the thin film transistor in the display area 21 are formed at the same time, the thin film transistor includes a gate and a source/drain, and the material of the repair trace 25 is the same as the material of the gate and the source/drain. Specifically, a gate insulating layer is formed on a substrate of the touch display screen, then a film is coated on the gate insulating layer, and after patterning, the repair wiring 25 and the thin film transistor are formed in the fan-out wiring area and the display area 21 respectively. An insulating layer (not shown in fig. 2) is disposed between the preset metal trace 251 and the panel test trace 252, and an insulating layer (not shown in fig. 2) is disposed between the repair trace 25 and the touch trace 24. Only one panel test trace 252 and one pre-positioned metal trace 251 are schematically shown in fig. 2.
In a specific embodiment, the preset metal traces 251 are metal traces disposed in the fan-out trace area during the process of manufacturing the display screen, and the preset metal traces 251 in the fan-out trace area are disposed non-intersecting with each other, such as disposed parallel to each other, or disposed non-parallel to each other, as long as the preset metal traces 251 are not intersecting with each other. One preset metal wire 251 is equivalent to a section of conducting wire, and the panel test wire 252 is mainly used in the cell lighting test and the module lighting test. Therefore, after the lighting test is completed, the preset metal trace 251 and the panel test trace 252 can be used to repair the touch trace 241 with the open circuit. In this embodiment, the panel test trace 251 is located between the preset metal trace 251 and the touch trace 24, that is, the preset metal trace 251 and the gate in the display area 21 are disposed at the same layer, and the panel test trace 251 and the source/drain in the display area 21 are disposed at the same layer. In other embodiments, the preset metal trace 251 may be located between the panel test trace 251 and the touch trace 24, or the panel test trace 251 and the preset metal trace 251 may be located on the same layer.
In this embodiment, the panel test trace 252 is connected to the driving circuit 27, and in other embodiments, the panel test trace 252 may not be connected to the driving circuit 27, which is not limited herein.
Referring to fig. 2, the repair trace 25 in the present embodiment includes a preset metal trace 251 and a panel test trace 252, the preset metal trace 251 and the panel test trace 252 are connected by a jumper, and a first end and a second end of the touch trace 241, which are disconnected, are respectively connected by a jumper with the preset metal trace 251 and the panel test trace 252, where the jumper connection refers to that a through hole is formed in an insulating layer between two metal traces, and the metal layers located on the upper layer and the lower layer of the insulating layer are electrically connected by the through hole. Specifically, a through hole O2 is provided in the insulating layer between the preset metal trace 251 and the panel test trace 252, a through hole O1 is provided in the insulating layer between the touch trace 241 and the preset metal trace 251, a through hole O3 is provided in the insulating layer between the touch trace 241 and the panel test trace 252, and jumper connection is performed through the through holes O1, O2, and O3.
In this embodiment, the first end and the second end of the touch trace 241 respectively refer to two ends that are disconnected after the disconnection occurs. More specifically, the first end is the end connected to the preset metal trace 251 after the touch trace 241 is disconnected, and the second end is the end connected to the panel test trace 252.
In this embodiment, the material of the repair trace 25 is molybdenum, or titanium/aluminum/titanium, or molybdenum/aluminum/molybdenum. In other embodiments, the material may be other materials, and is not particularly limited.
Referring to fig. 3, fig. 3 is an enlarged schematic view of a partial region in the fan-out trace region in fig. 2. As shown in fig. 3, the touch trace 241 is disconnected, a first end of the touch trace 241 is connected to the preset metal trace 251 through a via O1 in a jumper manner, the preset metal trace 251 is connected to the panel test trace 252 through a via O2 in a jumper manner, and a second end of the touch trace 241 is connected to the panel test trace 252 through a via O3 in a jumper manner. The electric signal of the driving circuit 27 can be transmitted to the display area 21 by the arrow direction of fig. 3 from O1 → O2 → O3.
In this embodiment, the touch trace 241 with the open circuit is repaired by the preset metal trace 251 and the panel test trace 252, but in other embodiments, the touch trace 241 may be repaired only by the preset metal trace 251 disposed in the fan-out trace area and adjacent to the touch trace 241 with the open circuit, or only by the panel test trace 252, which is not specifically limited herein.
In this embodiment, the touch wire 241 with the open circuit can be repaired by the preset metal wire 251 and the panel test wire 252, so that the display screen with the open circuit of the touch wire 241 cannot be scrapped, the utilization rate of materials can be improved, and the yield of products can be improved.
Referring to fig. 4, fig. 4 is a schematic top view structure diagram of another embodiment of a touch display screen provided in the present application. Different from the previous embodiment, only one touch wire is broken in fig. 3, two touch wires are broken in this embodiment, and one panel test wire is cut into two parts by laser cutting.
Specifically, one panel test trace 352 is cut into two parts by means of laser cutting, and the position enclosed by the dashed line frame in fig. 4 is the position where the panel test trace 352 is cut. A first end of one broken touch wire 341 is connected with a preset metal wire 351 through a through hole O1 in a jumper manner, the preset metal wire 351 is connected with a panel test wire 352 through a through hole O2 in a jumper manner, and a second end of the touch wire 341 is connected with the panel test wire 352 through a through hole O3 in a jumper manner; the first end of the other open-circuited touch trace 341 is connected to the preset metal trace 351 through a through hole O4 in a jumper manner, the preset metal trace 351 is connected to the panel test trace 352 through a through hole O5 in a jumper manner, and the second end of the touch trace 341 is connected to the panel test trace 352 through a through hole O6 in a jumper manner. That is, in the present embodiment, one panel test trace 352 is originally cut into two parts, so that two open touch traces 341 can be repaired.
After the lighting test is completed, generally, four panel test wires are in a disconnected state, and the disconnected touch wires can be repaired by using the four panel test wires. For example, when the four panel test traces are all cut into two parts, that is, the original four panel test traces are cut into eight parts, the original four panel test traces can be used to repair the eight open touch traces.
Fig. 3 illustrates a situation where one touch trace is broken, fig. 4 illustrates a situation where two touch traces are broken, and a situation where a greater number of touch traces are broken is similar to the situation in fig. 3 to 4, and is not described again.
In this embodiment, the repair routing includes a preset metal routing and a panel test routing, the preset metal routing is disposed on the same layer as a gate in the display area, the panel test routing is disposed on the same layer as a source/drain in the display area, the preset metal routing and the panel test routing are disposed at intervals through an insulating layer, the panel test routing and the touch routing are disposed at intervals through an insulating layer, when the open-circuit touch routing is repaired, only the preset metal routing or only the panel test routing or both the preset metal routing and the panel test routing are used for repairing, which is not specifically limited in this application.
In this embodiment, walk the line and can repair the touch line that takes place to open circuit through presetting metal and walk the line and test the line to the display screen that the touch was walked the line and is taken place to open circuit can not scrap, and then can improve the utilization ratio of material, promotes the yield of product.
Referring to fig. 5, fig. 5 is a schematic flowchart illustrating an embodiment of a repair method for a touch display screen according to the present application. The following description is made in detail.
Step 51: and detecting whether the touch wiring is broken or not.
The touch wiring is used for transmitting an electric signal of the driving circuit to the display area, and the touch wiring is broken and is not repaired to cause scrapping of the display screen, so that whether the touch wiring is broken or not is detected, and the broken touch wiring is repaired necessarily.
Step 52: if the first end and the second end of the touch wiring are in open circuit, the two ends of the repair wiring are respectively connected with the first end and the second end.
If the touch wiring is detected to be broken, the first end and the second end of the touch wiring are respectively connected with the two ends of the repairing wiring, and the first end and the second end of the touch wiring refer to the two ends of the touch wiring which are broken after the touch wiring is broken.
In a specific embodiment, through holes are respectively formed in the insulating layer between the two ends of the repair trace and the touch trace, and the two ends of the repair trace are respectively connected with the first end jumper and the second end jumper through the through holes. As shown in fig. 3, the repair trace includes a preset metal trace 251 and a panel test trace 252, a through hole O1 is disposed at a first end of the touch trace 241 and an insulating layer of the preset metal trace 251, a through hole O3 is disposed at a second end of the touch trace 241 and an insulating layer of the panel test trace 252, a through hole O2 is disposed on the insulating layer between the preset metal trace 251 and the panel test trace 252, and a jumper connection is performed through the through holes O1, O2, and O3, so that an electrical signal of the driving circuit can be transmitted to the display area through a direction of an arrow in fig. 3.
In this embodiment, the through holes are specifically arranged in a laser welding manner, and the through holes may be arranged in other manners as long as jumper connection can be realized through the through holes.
In any of the above embodiments, the touch display screen may be an in-cell touch display screen.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of a display device provided in the present application. As shown in fig. 6, the display device 60 includes a touch display screen 601, and the touch display screen 601 is the touch display screen in any of the above embodiments.
The beneficial effect of this application is: be different from prior art's condition, the touch display screen of this application includes the display area and is located the peripheral drive circuit of display area and restores the line of walking, be provided with many touches between display area and the drive circuit and walk the line, restore the line and be located the substrate base plate of touch display screen and touch and walk between the line, when at least one touch was walked the line and is broken circuit, the one end of restoring the line was used for walking the line with the touch that opens circuit and drive circuit connection's first end is connected, the other end of restoring the line is used for walking the line with the touch that opens circuit and display area connection's second end is. Through the touch display screen of this application can improve the utilization ratio of material, promote the yield of product.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings are included in the scope of the present disclosure.
Claims (4)
1. A touch display screen, comprising:
the display panel comprises a display area, a drive circuit and a repair wire, wherein the drive circuit and the repair wire are positioned at the periphery of the display area, a plurality of touch wires are arranged between the display area and the drive circuit, and the repair wire is positioned between a substrate of the touch display screen and the touch wires;
one side of the plurality of touch wires connected with the driving circuit is located in a fan-out wire routing area, the repair wire is arranged in the fan-out wire routing area, and the repair wire is arranged adjacent to at least one open-circuit touch wire;
the repairing wiring comprises a preset metal wiring and a panel testing wiring, a first insulating layer is arranged between the preset metal wiring and the panel testing wiring, a first through hole is formed in the first insulating layer, and the preset metal wiring and the panel testing wiring are connected through the first through hole in a jumper mode;
a second insulating layer is arranged between the preset metal routing and the touch routing, a second through hole is formed in the second insulating layer, and the second through hole is used for connecting the preset metal routing and the touch routing jumper;
a third insulating layer is arranged between the panel testing wire and the touch wire, and a third through hole is formed in the third insulating layer and used for connecting the panel testing wire and the touch wire;
when at least one touch routing line is in a circuit break state, one end of the preset metal routing line is used for being connected with the touch routing line in the circuit break state and a first end jumper wire connected with the driving circuit, and one end of the panel testing routing line is used for being connected with the touch routing line in the circuit break state and a second end jumper wire connected with the display area.
2. The touch display screen of claim 1, wherein the repair trace is made of molybdenum, titanium, or molybdenum.
3. A display device, characterized in that the display device comprises a touch display screen, and the touch display screen is the touch display screen of any one of claims 1-2.
4. A touch display screen repairing method is characterized in that the touch display screen comprises the following steps: the display panel comprises a display area, a drive circuit and a repair wire, wherein the drive circuit and the repair wire are positioned at the periphery of the display area, a plurality of touch wires are arranged between the display area and the drive circuit, and the repair wire is positioned between a substrate of the touch display screen and the touch wires;
one side of the plurality of touch wires, which is connected with the driving circuit, is located in a fan-out wire routing area, the repair wire is arranged in the fan-out wire routing area, and the repair wire and the touch wire are arranged adjacently;
the repairing wire comprises a preset metal wire and a panel testing wire, and the repairing method comprises the following steps:
detecting whether the touch routing is broken or not;
if the first end and the second end of the touch routing are in open circuit, arranging a first through hole in an insulating layer between the preset metal routing and the panel test routing, and enabling the preset metal routing and the panel test routing to be connected in a jumper way;
and a second through hole is arranged on the insulating layer between the preset metal wire and the first end, and a third through hole is arranged on the insulating layer between the panel test wire and the second end, so that the preset metal wire and the panel test wire are connected with the first end and the second end through the second through hole and the third through hole respectively in a jumper way.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810818238.3A CN108920009B (en) | 2018-07-24 | 2018-07-24 | Touch display screen, display device and repairing method thereof |
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| CN201810818238.3A CN108920009B (en) | 2018-07-24 | 2018-07-24 | Touch display screen, display device and repairing method thereof |
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| CN108920009B true CN108920009B (en) | 2021-06-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109445135A (en) * | 2018-12-12 | 2019-03-08 | 惠科股份有限公司 | A kind of restorative procedure and display panel of display panel |
| TWI699586B (en) * | 2019-04-26 | 2020-07-21 | 友達光電股份有限公司 | Array substrate and manufacturing method thereof |
| TWI711852B (en) * | 2019-05-15 | 2020-12-01 | 友達光電股份有限公司 | Display panel and manufacturing method thereof |
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| CN206331215U (en) * | 2016-10-26 | 2017-07-14 | 上海天马微电子有限公司 | A kind of touch-control display panel and display device |
| CN206515805U (en) * | 2017-02-28 | 2017-09-22 | 厦门天马微电子有限公司 | Array base palte, touch-control display panel and touch control display apparatus |
| CN107908306A (en) * | 2017-11-01 | 2018-04-13 | 昆山龙腾光电有限公司 | Restorative procedure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503110A (en) * | 2014-12-10 | 2015-04-08 | 深圳市华星光电技术有限公司 | Display panel and repair method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206331215U (en) * | 2016-10-26 | 2017-07-14 | 上海天马微电子有限公司 | A kind of touch-control display panel and display device |
| CN206515805U (en) * | 2017-02-28 | 2017-09-22 | 厦门天马微电子有限公司 | Array base palte, touch-control display panel and touch control display apparatus |
| CN107908306A (en) * | 2017-11-01 | 2018-04-13 | 昆山龙腾光电有限公司 | Restorative procedure |
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