Display panel

Abstract

The application provides a display panel, which comprises a first scanning line, the first scanning line comprises a first scanning part corresponding to a first sub-pixel and a second scanning part corresponding to a second sub-pixel; a second data line is located between the first scanning part and the second scanning part; a bridge line comprises a first bridge line and two second bridge lines, the first bridge line crosses the second data line, one of the two second bridge lines is electrically connected between the first scanning part and one end of the first bridge line, and the other of the two second bridge lines is electrically connected between the second scanning part and the other end of the first bridge line. The first scanning part and the second scanning part are electrically connected across the second data line by arranging the first bridge line in the first metal layer and the two second bridge lines in the second metal layer, and the problem that the display panel is scrapped due to the cross line caused by the short circuit of the data line and the scanning line is solved.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel. Background Technology

[0002] Thin-film transistors (TFTs) typically refer to insulated-gate field-effect transistors made of semiconductor thin-film materials. These devices usually consist of a semiconductor thin film and an insulating layer in contact with one of its surfaces, and have gate, source, and drain electrodes. During the manufacturing process of TFT liquid crystal display array substrates, defects in coating or etching can occur due to equipment or environmental factors. This can lead to short circuits at the intersection of data lines and gate lines, resulting in cross-shaped defects and rendering the product unusable, thus affecting the yield and cost of the finished product. Summary of the Invention

[0003] Embodiments of the present invention provide a display panel to solve the problem that cross lines caused by short circuits in the data lines and gate lines on the substrate can lead to the scrapping of the display panel.

[0004] To solve the above problems, the technical solution provided by the present invention is as follows:

[0005] A display panel, comprising:

[0006] Multiple sub-pixels, located within multiple pixel regions, including first and second sub-pixels adjacent in a first direction;

[0007] A first metal layer includes a plurality of scan lines extending along the first direction, wherein the plurality of scan lines include a first scan line, and the first scan line includes a first scan portion corresponding to the first sub-pixel and a second scan portion corresponding to the second sub-pixel;

[0008] A second metal layer is located on the first metal layer and includes multiple data lines. The multiple data lines extend along a second direction intersecting the first direction to form multiple pixel regions with the multiple scan lines. The multiple data lines include a first data line corresponding to the first sub-pixel and a second data line corresponding to the second sub-pixel. The first data line is located on the side of the first sub-pixel away from the second sub-pixel, and the second data line is located between the first sub-pixel and the second sub-pixel and between the first scan section and the second scan section.

[0009] The bridging wire includes a first bridging wire located on the first metal layer and two second bridging wires located on the second metal layer. The first bridging wire spans the second data line. One of the two second bridging wires is electrically connected between the first scanning unit and one end of the first bridging wire, and the other of the two second bridging wires is electrically connected between the second scanning unit and the other end of the first bridging wire.

[0010] According to a preferred embodiment of the present invention, the first metal layer includes a storage electrode line that overlaps with the pixel electrodes of the plurality of sub-pixels.

[0011] The storage electrode line includes a first storage connection line and a second storage connection line, the first storage connection line and the second storage connection line are located on both sides of the second data line, and the first bridging line is located between the first storage connection line and the second storage connection line and is spaced apart from the first storage connection line and the second storage connection line.

[0012] According to a preferred embodiment of the present invention, the first storage connection line and the second storage connection line have multiple breaks at the ends near the first bridge wire.

[0013] According to a preferred embodiment of the present invention, each sub-pixel includes a main sub-pixel, a secondary sub-pixel, and a driving circuit, wherein the driving circuit includes a first thin-film transistor, a second thin-film transistor, and a sharing thin-film transistor;

[0014] In the plurality of sub-pixels other than the first sub-pixel and the second sub-pixel, the first thin-film transistor is electrically connected between the main pixel electrode of the main sub-pixel and the corresponding data line, the second transistor is electrically connected between the sub-pixel electrode of the secondary sub-pixel and the first thin-film transistor, and the sharing thin-film transistor is electrically connected between the sub-pixel electrode and the sharing line.

[0015] In the first sub-pixel and the second sub-pixel, the two sharing lines are respectively insulated from the first data line and the second data line, so as to serve as two second bridging lines.

[0016] According to a preferred embodiment of the present invention, in the first sub-pixel and the second sub-pixel, the two shared thin-film transistors are respectively insulated from the two second thin-film transistors.

[0017] According to a preferred embodiment of the present invention, in the first sub-pixel and the second sub-pixel, the two first thin-film transistors are respectively insulated from the first data line and the second data line.

[0018] According to a preferred embodiment of the present invention, in the first sub-pixel and the second sub-pixel, the two sharing thin-film transistors are respectively insulated from the two sharing lines.

[0019] According to a preferred embodiment of the present invention, the display panel includes a pixel electrode layer located on the second metal layer, the pixel electrode layer including the main pixel electrode, the secondary pixel electrode and the bridging electrode, the bridging electrode being electrically connected to the first bridging wire and the second bridging wire through a first via.

[0020] According to a preferred embodiment of the present invention, the display panel further includes a bridging auxiliary part, wherein the bridging auxiliary part electrically connects two second bridging wires to the first scanning part and the second scanning part respectively through a second via.

[0021] According to a preferred embodiment of the present invention, a columnar spacer is provided on the pixel electrode layer at the position corresponding to the second via.

[0022] The beneficial effects of the present invention are as follows: by setting a first bridge wire located on the first metal layer and two second bridge wires located on the second metal layer, the first scanning part of the first scan line can be electrically connected to one end of the first bridge wire through a second bridge wire, and the second scanning part of the first scan line can be electrically connected to the other end of the first bridge wire through a second bridge wire. This realizes that the first scanning part and the second scanning part are electrically connected across the second data line, and solves the problem that the display panel is scrapped due to the cross lines generated by the short circuit between the data line and the scan line. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Appendix Figure 1 A schematic diagram of a structure that generates crosshairs for a display panel in the prior art;

[0025] Appendix Figure 2 This is a schematic diagram of the structure of the display panel of the present invention;

[0026] Appendix Figure 3 for Figure 2 Enlarged view at point B in the middle;

[0027] Appendix Figure 4 for Figure 2 Enlarged view at point C;

[0028] Appendix Figure 5This is a schematic diagram of the structure of the display panel of the present invention;

[0029] Appendix Figure 6 for Figure 5 Enlarged view at point D;

[0030] Appendix Figure 7 This is a schematic diagram of the driving circuit of the display panel of the present invention;

[0031] Appendix Figure 8 This is a schematic diagram of the driving circuit of the display panel of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] As shown in Figure 1, the display panel 10 includes multiple scan lines and multiple data lines, which form multiple pixel areas. The display panel 10 also includes multiple sub-pixels disposed within these pixel areas. During the manufacturing process of the display panel 10, due to equipment or environmental factors, poor coating or etching may occur, leading to short circuits at the intersections of some data lines and some scan lines. Figure 1 The first data line 401 and the first scan line 301 shown at point A in the middle are short-circuited at their intersection, resulting in a crosshair and rendering the display panel 10 unusable.

[0034] like Figure 2 , Figure 3 , Figure 4 As shown, an embodiment of the present invention provides a display panel 10, including a substrate, a first metal layer disposed on the substrate, and a second metal layer disposed on the first metal layer.

[0035] The first metal layer includes a plurality of scan lines extending along a first direction and arranged along a second direction, the plurality of scan lines being used to provide scan signals. The second metal layer includes a plurality of data lines extending along the second direction and arranged along the first direction to form a plurality of pixel regions with the plurality of scan lines. The plurality of data lines are used to provide data signals. In this embodiment, the first direction intersects the second direction, and the first direction is perpendicular to the second direction.

[0036] The display panel 10 further includes a plurality of sub-pixels disposed in a plurality of pixel regions, the plurality of sub-pixels including a first sub-pixel 100 and a second sub-pixel 200 that are adjacent in a first direction.

[0037] The plurality of scan lines include a first scan line 301, the first scan line 301 including a first scan portion corresponding to the first sub-pixel 100 and a second scan portion corresponding to the second sub-pixel 200; the plurality of data lines include a first data line 401 corresponding to the first sub-pixel 100 and a second data line 402 corresponding to the second sub-pixel 200; the first data line 401 is located on the side of the first sub-pixel 100 away from the second sub-pixel 200; the second data line 402 is located between the first sub-pixel 100 and the second sub-pixel 200 and between the first scan portion and the second scan portion.

[0038] The display panel 10 further includes a bridging wire for electrically connecting the first scanning unit and the second scanning unit across the second data line 402. The bridging wire includes a first bridging wire and two second bridging wires. The first bridging wire is located on the first metal layer, and the two second bridging wires are located on the second metal layer. The first bridging wire spans the second data line 402. One of the two second bridging wires is electrically connected between the first scanning unit and one end of the first bridging wire, and the other of the two second bridging wires is electrically connected between the second scanning unit and the other end of the first bridging wire. Since the first scanning unit is electrically connected to one end of the first bridging wire through a second bridging wire, and the second scanning unit is electrically connected to the other end of the first bridging wire through a second bridging wire, and the first bridging wire spans the second data line 402, the first scanning unit and the second scanning unit are electrically connected across the second data line 402. Figure 3 (Center B in the middle).

[0039] This embodiment sets up a first bridge wire located on the first metal layer and two second bridge wires located on the second metal layer, so that the first scanning part of the first scan line 301 can be electrically connected to one end of the first bridge wire through a second bridge wire, and the second scanning part of the first scan line 301 can be electrically connected to the other end of the first bridge wire through a second bridge wire. This realizes that the first scanning part and the second scanning part are electrically connected across the second data line 402, and solves the problem that the display panel 10 is scrapped due to the cross lines generated by the short circuit between the data line and the scan line.

[0040] like Figure 2 and Figure 4As shown, in some embodiments of the present invention, the first metal layer includes a storage electrode line 302, the projection of the storage electrode line 302 on the substrate overlaps with the projection of the pixel electrodes of the plurality of sub-pixels on the substrate, and the storage electrode line 302 and the pixel electrodes corresponding to the sub-pixels form the storage capacitor.

[0041] The storage electrode line 302 includes a first storage connection line, a second storage connection line, and a third storage connection line. The first and second storage connection lines are located on both sides of the second data line 402, and the third storage connection line is located between the first and second storage connection lines and is spaced apart from them. Figure 2 (at point C) to insulate it from the first storage connection line and the second storage connection line, thereby serving as the first bridging wire.

[0042] In this embodiment, by setting the third storage connection line of the storage electrode line 302 to be insulated from the first storage connection line and the second storage connection line, the third storage connection line can be used as the first bridging line. This allows the existing film structure to be used when repairing the crosshair problem, thereby avoiding the need to add a new structure when repairing the crosshair problem, which would increase the repair cost.

[0043] In some embodiments of the present invention, the connection point between the third storage connection line and the first storage connection line and the second storage connection line is cut off by laser cutting, so that the third storage connection line is spaced apart from the first storage connection line and the second storage connection line.

[0044] To ensure the stability of the insulation between the first and second storage connection lines and the third storage connection line, multiple cuts are made at the ends of the first and second storage connection lines near the third storage connection line to create multiple breaks. This prevents the first and second storage connection lines from still having an electrical relationship with the third storage connection line (first bridge wire) if the cuts are incomplete.

[0045] like Figure 5 , Figure 7 , Figure 8 As shown, in some embodiments of the present invention, each sub-pixel includes a main sub-pixel 101, a secondary sub-pixel 102 and a driving circuit. The main sub-pixel 101 includes a main pixel electrode 1011, the secondary sub-pixel 102 includes a secondary pixel electrode 1021, and the driving circuit includes a first thin-film transistor 501, a second thin-film transistor 502 and a sharing thin-film transistor 503.

[0046] In this embodiment, in order to fix the crosshair problem without adding any new structures, the source of the shared thin-film transistor 503 of the first sub-pixel 100 and the second sub-pixel 200 is used as the second bridge connection.

[0047] Therefore, among the sub-pixels other than the first sub-pixel 100 and the second sub-pixel 200, the first thin-film transistor 501 is electrically connected between the main pixel electrode 1011 of the main sub-pixel 101 and the corresponding data line, the second transistor is electrically connected between the sub-pixel electrode 1021 of the secondary sub-pixel 102 and the first thin-film transistor 501, and the sharing thin-film transistor 503 is electrically connected between the sub-pixel electrode 1021 and the sharing line.

[0048] Specifically, the drain 5012 of the first thin-film transistor 501 is electrically connected to the first data line 401, the source 5011 of the first thin-film transistor 501 is electrically connected to the main pixel electrode 1011, the drain 5022 of the second thin-film transistor 502 is electrically connected to the drain 5012 of the first thin-film transistor 501 to be electrically connected to the second data line 402. Preferably, the first thin-film transistor 501 and the second thin-film transistor 502 share a drain, the source 5021 of the second thin-film transistor 502 is electrically connected to the sub-pixel electrode 1021, the drain 5032 of the shared thin-film transistor 503 is electrically connected to the source 5021 of the second thin-film transistor 502, the source 5031 of the shared thin-film transistor 503 is electrically connected to the storage electrode line 302, and the gates of the first thin-film transistor 501, the second thin-film transistor 502, and the shared thin-film transistor 503 are all electrically connected to the first scanning unit.

[0049] In the first sub-pixel 100 and the second sub-pixel 200, the sources 5031 of the two shared thin-film transistors 503 are respectively insulated from the first data line 401 and the second data line 402, so as to serve as two second bridge connections.

[0050] In this embodiment, by insulating the sources 5031 of the two shared thin-film transistors 503 from the first data line 401 and the second data line 402 respectively, the sources 5031 of the two shared thin-film transistors 503 can be used as the second bridge wire. This avoids the problem that when repairing the cross-shaped problem, it is necessary to add a new structure, which would make the repair process too complicated and the repair cost too high.

[0051] In some embodiments of the present invention, in order to insulate the source 5031 of the two shared thin-film transistors 503 in the first sub-pixel 100 and the second sub-pixel 200 from the first data line 401 and the second data line 402, the two shared thin-film transistors 503 are respectively insulated from the two second thin-film transistors 502. Specifically, the connection between the drain 5032 of the shared thin-film transistor 503 and the source 5021 of the second thin-film transistor 502 is cut by laser, so that the drain 5032 of the shared thin-film transistor 503 and the source 5021 of the second thin-film transistor 502 are no longer electrically connected.

[0052] like Figure 6 As shown, in some embodiments of the present invention, in order to insulate the source 5031 of the two shared thin-film transistors 503 in the first sub-pixel 100 and the second sub-pixel 200 from the first data line 401 and the second data line 402, the two first thin-film transistors 501 in the first sub-pixel 100 and the second sub-pixel 200 may also be insulated from the first data line 401 and the second data line 402 respectively. Specifically, the connection between the drain 5012 of the first thin-film transistor 501 in the first sub-pixel 100 and the first data line 401 is cut by laser. Figure 6 At point D in the middle, a laser is used to cut the connection between the drain 5012 of the first thin-film transistor 501 in the second sub-pixel 200 and the second data line 402. Figure 6 (at point D in the middle), so that the two first thin film transistors 501 in the first sub-pixel 100 and the second sub-pixel 200 are respectively insulated from the first data line 401 and the second data line 402.

[0053] It is understood that, among the multiple sub-pixels, the source 5031 of the sharing thin-film transistor 503 of a portion of the sub-pixels is electrically connected to the storage electrode line 302, while the source 5031 of the sharing thin-film transistor 503 of another portion of the sub-pixels is electrically connected to the sharing line and the storage electrode line 302 respectively, so as to receive the sharing voltage of the sharing line and transmit the sharing voltage to the sharing thin-film transistor 503 of other sub-pixels through the storage electrode line 302. The sources of the sharing thin-film transistors 503 in the first sub-pixel 100 and the second sub-pixel 200 are used as the second bridge connection. If the sharing voltage is received again, it will affect the scanning signal. Therefore, the sources 5031 of the sharing thin-film transistors 503 in the first sub-pixel 100 and the second sub-pixel 200 that are electrically connected to the sharing line are cut to make the sources 5031 insulated from the sharing line. In this embodiment, the source of the sharing thin-film transistor 503 in the second sub-pixel 200 is used for the electrical connection of the sharing line. Therefore, the connection between the source 5031 of the sharing thin-film transistor 503 in the second sub-pixel 200 and the sharing line is cut to make the source 5031 insulated from the sharing line.

[0054] In some embodiments of the present invention, the display panel 10 includes a pixel electrode layer located on the second metal layer. The pixel electrode layer includes the main pixel electrode 1011, the secondary pixel electrode 1021, and a bridging electrode. The bridging electrode is electrically connected to the first bridging wire and the second bridging wire through a first via.

[0055] Specifically, the display panel 10 includes a first via connecting the pixel electrode layer, the first metal layer, and the second metal layer. When the pixel electrode layer forms the main pixel electrode 1011 and the secondary pixel electrode 1021, it also forms the bridging electrode. The bridging electrode is insulated from the main pixel electrode 1011 and the secondary pixel electrode 1021 and is made of the same material as the main pixel electrode 1011 and the secondary pixel electrode 1021. The bridging electrode extends from the pixel electrode layer to the first metal layer and the second metal layer through the first via and is electrically connected to the storage electrode line 302 and the source of the sharing thin film transistor 503, respectively, so that the source of the sharing thin film transistor 503 in the plurality of sub-pixels can be electrically connected to the storage electrode line 302. Corresponding to the first sub-pixel 100 and the second sub-pixel 200, the bridging line is electrically connected to the first bridging line (third storage line) and the second bridging line (source of the sharing thin film transistor 503).

[0056] In some embodiments of the present invention, the display panel 10 further includes a bridging auxiliary part, which connects two second bridging wires to the first scanning part and the second scanning part respectively through a second via.

[0057] Specifically, in this embodiment, the projection of the source of the shared thin-film transistor 503 in the first sub-pixel 100 and the second sub-pixel 200 onto the substrate overlaps with the projection of the first scanning portion and the second scanning portion onto the substrate. A second via is formed by laser drilling the portion of the display panel 10 corresponding to the overlap. The wavelength of the light wave used in the laser drilling can be 1350μm.

[0058] It is understood that when the laser forms the second via, a portion of the source of the shared thin-film transistor 503 will melt and flow to contact the corresponding first scanning section and second scanning section, thereby forming the bridging auxiliary section, so that the two second bridging lines are electrically connected to the first scanning section and the second scanning section respectively.

[0059] In some embodiments of the present invention, in order to ensure the stability of the electrical connection between the two second bridging wires and the first scanning unit and the second scanning unit, the bridging auxiliary part further includes metal WO (tungsten). Specifically, the WO metal layer can be formed in the second via by physical vapor deposition.

[0060] In this embodiment, since lasers can only drill holes from the top layer downwards, when forming the second via, the second via also includes a portion of the pixel electrode layer located on the first metal layer and the second metal layer. That is, the pixel electrode layer also has holes. In order to prevent the bridging auxiliary part from being affected by external substances entering through the second via, and to prevent the bridging auxiliary part from being thrown out of the second via, a columnar spacer is provided on the pixel electrode layer corresponding to the position of the second via. It can be understood that the maximum width of the columnar spacer is at least greater than the aperture of the second via.

[0061] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A display panel, characterized in that, include: Multiple sub-pixels, located within multiple pixel regions, including first and second sub-pixels adjacent in a first direction; A first metal layer includes a plurality of scan lines extending along the first direction, wherein the plurality of scan lines include a first scan line, and the first scan line includes a first scan portion corresponding to the first sub-pixel and a second scan portion corresponding to the second sub-pixel; A second metal layer is located on the first metal layer and includes multiple data lines. The multiple data lines extend along a second direction intersecting the first direction to form multiple pixel regions with the multiple scan lines. The multiple data lines include a first data line corresponding to the first sub-pixel and a second data line corresponding to the second sub-pixel. The first data line is located on the side of the first sub-pixel away from the second sub-pixel, and the second data line is located between the first sub-pixel and the second sub-pixel and between the first scan section and the second scan section. The first scan section and the second scan section are respectively disconnected on opposite sides of the corresponding second data line. The bridging wire includes a first bridging wire located on the first metal layer and two second bridging wires located on the second metal layer. The first bridging wire spans the second data line. One of the two second bridging wires is electrically connected between the first scanning unit and one end of the first bridging wire, and the other of the two second bridging wires is electrically connected between the second scanning unit and the other end of the first bridging wire.

2. The display panel according to claim 1, characterized in that, The first metal layer includes storage electrode lines that overlap with the pixel electrodes of the plurality of sub-pixels; The storage electrode line includes a first storage connection line and a second storage connection line, the first storage connection line and the second storage connection line are located on both sides of the second data line, and the first bridging line is located between the first storage connection line and the second storage connection line and is spaced apart from the first storage connection line and the second storage connection line.

3. The display panel according to claim 2, characterized in that, The first storage connection line and the second storage connection line have multiple breaks at the end near the first bridge wire.

4. The display panel according to claim 1, characterized in that, Each of the sub-pixels includes a main sub-pixel, a secondary sub-pixel, and a driving circuit, wherein the driving circuit includes a first thin-film transistor, a second thin-film transistor, and a shared thin-film transistor; In the plurality of sub-pixels other than the first sub-pixel and the second sub-pixel, the first thin-film transistor is electrically connected between the main pixel electrode of the main sub-pixel and the corresponding data line, the second thin-film transistor is electrically connected between the sub-pixel electrode of the secondary sub-pixel and the first thin-film transistor, and the sharing thin-film transistor is electrically connected between the sub-pixel electrode and the sharing line. In the first sub-pixel and the second sub-pixel, the sources of the two shared thin-film transistors are respectively insulated from the first data line and the second data line, so as to serve as two second bridge connections.

5. The display panel according to claim 4, characterized in that, In the first sub-pixel and the second sub-pixel, the two shared thin-film transistors are respectively insulated from the two second thin-film transistors.

6. The display panel according to claim 4, characterized in that, In the first sub-pixel and the second sub-pixel, the two first thin-film transistors are respectively insulated from the first data line and the second data line.

7. The display panel according to claim 4, characterized in that, In both the first and second sub-pixels, the two sharing thin-film transistors are insulated from the sharing line.

8. The display panel according to claim 4, characterized in that, The display panel includes a pixel electrode layer located on the second metal layer. The pixel electrode layer includes the main pixel electrode, the secondary pixel electrode, and a bridging electrode. The bridging electrode is electrically connected to the first bridging wire and the second bridging wire through a first via.

9. The display panel according to claim 8, characterized in that, The display panel further includes a bridging auxiliary section, which connects two second bridging wires to the first scanning section and the second scanning section respectively through a second via.

10. The display panel according to claim 9, characterized in that, A columnar spacer is provided on the pixel electrode layer at the position corresponding to the second via.

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