CN103969859B - A kind of substrate for display and display device - Google Patents

Abstract

The invention discloses a substrate for display and a display device, so as to avoid the problem that the PI film layer formed by the PI liquid is defective due to the slit between a plurality of mutually independent connection areas of the display area when the PI liquid is sprayed on the display area . The display substrate includes: a base substrate; a peripheral common electrode located in a peripheral area of the base substrate extending along a first direction; a display area located on the base substrate along a second direction intersecting with the first direction at least A plurality of common electrode lines extending to the area where the peripheral common electrodes are located, the peripheral common electrodes and the common electrode lines are arranged in different layers; the peripheral common electrodes and the common electrode lines are insulated in the intersecting area and The peripheral area is connected by means of via bridging.

Description

A display substrate and a display device

technical field

The invention relates to the technical field of liquid crystal display, in particular to a display substrate and a display device.

Background technique

In the field of display technology, wide viewing angles, high image quality and fast response speed have become urgent requirements for display devices. Currently, Advanced Super Dimension Switch (ADVanced Super Dimension Switch, ADSDS, ADS for short), and In-Plane Switching (IPS) type, or Vertical Alignment-In-Plane Switching (Vertical Aligment-In-Plane Switching, VA -IPS) liquid crystal display and other technologies, which have the characteristics of wide viewing angle, high image quality and fast response speed, have attracted much attention.

In addition, the pursuit of high yield rate is also the goal that manufacturers have been pursuing. There are many factors that affect the product yield rate. For example, in the thin film transistor liquid crystal display (Thin Film Transistor Liquid Crystal Display, TFT-LCD) manufacturing process, the manufacturing process of TFT, the manufacturing process of the alignment film (PI film layer), etc. may cause Defective display substrate (color filter substrate or array substrate). The main defect of the PI film layer is: a certain area in the display area (AA area) of the substrate substrate is not coated with PI liquid, no PI film layer is formed, or only a thin layer of PI liquid is coated to form a thinner layer. PI film layer. Generally, the PI film layer on the display substrate is formed after the gate lines, common electrode lines and other structures are formed, and the wiring of the gate lines, common electrode lines and other structures may cause defects in the PI film layer.

Generally, a common electrode line with high conductivity electrically connected to the common electrode is provided in the display area (AA area) of the array substrate to provide the common electrode with a common voltage signal (V _com ). The common electrode is arranged in the AA area, and is used to form an electric field with the pixel electrode to control the deflection of the liquid crystal molecules. In order to simplify the process flow, the common electrode lines and the gate lines and/or data lines on the array substrate are arranged on the same layer and formed in the same patterning process, and the gate lines and the common electrode lines are arranged parallel to each other. Therefore, each common electrode line has to be They are separated from each other and electrically connected through peripheral common electrodes arranged in the peripheral area. The peripheral common electrodes are used to connect with signal sources and to provide common voltage signals (V _com ) for each common electrode line at the same time.

Specifically, referring to FIG. 1, the display substrate provided by the prior art includes:

A plurality of common electrode lines 300 separated from each other in the display area, and the peripheral area is used to connect the peripheral common electrodes 200 of each common electrode line 300; the end of the common electrode line 300 close to the peripheral common electrode 200 and the peripheral common electrode 200 are bridged by via holes connection, specifically through the conductive sheet 500 between the via holes 400, each common electrode line 300 corresponds to a conductive sheet 500; the conductive sheet 500 is located in the display area of the display substrate; there is a certain slit between the conductive sheets 500, the slit The extending direction of the slit is toward the peripheral area of the base substrate.

When the PI liquid is sprayed on the display substrate shown in FIG. 1 , a certain amount of accumulated PI liquid will flow to the surrounding area to form a PI liquid film layer 600 . When the PI liquid flows to the vicinity of the conductive sheet 500, the PI liquid will flow along the slit between the conductive sheets 500, and in a short time, the PI liquid forms a ring-shaped halo structure around the conductive sheet 500, and the conductive sheet 500 is close to the common There will be no PI liquid phenomenon near one side of the electrode line 300, and the thickness of the ring-shaped PI film layer around the conductive sheet 500 is also significantly greater than the thickness of the PI film layer near the middle part of the AA area. On the one hand, the AA area is close to the conductive layer. The missing problem of the PI film layer of the sheet 500, on the other hand, leads to the problem of uneven overall thickness of the PI film layer, resulting in defective PI film layer, also known as defective PI film layer mura.

Contents of the invention

An embodiment of the present invention provides a display substrate and a display device. By extending the common electrode line of the display substrate located in the display area to the peripheral area, it is connected to the peripheral common electrode in the peripheral area, and the connection area is located in the peripheral area to avoid When the display area is sprayed with PI liquid, the PI film layer formed by the PI liquid is poor due to the slits between the multiple independent connection areas of the display area.

The display substrate provided by the embodiment of the present invention includes:

Substrate substrate;

At least one peripheral common electrode extending along a first direction in a peripheral region of the base substrate;

The display area located on the base substrate extends along a second direction intersecting with the first direction at least to a plurality of common electrode lines in the area where the peripheral common electrodes are located, and the peripheral common electrodes are arranged in different layers from the common electrode lines ;

The peripheral common electrode and the common electrode line are insulated in the intersecting area and connected in the peripheral area by a via hole bridge.

Preferably, the peripheral common electrode is linear; or

The peripheral common electrode is "U"-shaped or comb-shaped, and the opening orientation of the "U"-shaped or comb-shaped peripheral common electrode is consistent with the extending direction of the peripheral common electrode.

Preferably, the peripheral common electrode and the common electrode line are insulated by a first insulating layer between them in the intersecting area, the first insulating layer is located above the common electrode line, and the peripheral common electrode line an electrode is located above the first insulating layer;

Also includes:

a second insulating layer on the peripheral common electrode;

a conductive sheet on the second insulating layer;

The second insulating layer is provided with a first via hole extending to the peripheral common electrode, and a second via hole extending to each common electrode line; the conductive sheet is respectively connected to the outer periphery exposed at the first via hole The common electrode is electrically connected with the common electrode line exposed at the second via hole.

Preferably, a plurality of conductive sheets are provided on the second insulating layer, and the conductive sheets are connected to the common electrode lines in one-to-one correspondence.

Preferably, a plurality of first via holes and a plurality of second via holes are provided in the region corresponding to each conductive sheet.

Preferably, the common electrode line is "L"-shaped, and the short side of the "L"-shaped common electrode line is located in the area where the peripheral common electrode is located, or located on a side of the peripheral common electrode away from the display area.

Preferably, the peripheral common electrode is a "U"-shaped or comb-shaped structure, and the short side of the "L"-shaped common electrode line is located in the gap of the "U"-shaped structure, or located in any gap of the comb-shaped structure middle.

Preferably, the peripheral common electrodes are linear.

Preferably, the second via hole is located in a region corresponding to the short side of the "L"-shaped structure.

An embodiment of the present invention provides a display device, including the display substrate in any of the above manners.

To sum up, in the display substrate provided by the present invention, the common electrode lines extend to the peripheral area of the base substrate, and each common electrode line is connected to the peripheral common electrodes through the via holes in the peripheral area. Since the common electrode lines and the peripheral common electrodes have intersecting regions, the connection components for connecting the common electrode lines and the peripheral common electrodes are arranged in the peripheral regions. When the PI liquid is formed in the area near the peripheral common electrode in the AA area, since the peripheral common electrode is an integral structure, there is no local fault or slit area, when the PI liquid diffuses to the peripheral common electrode, the resistance of each area of the peripheral common electrode is the same, The thickness of the PI film layer formed near the peripheral common electrode is consistent, and there will be no uneven or missing local PI film layer due to local slits, avoiding the PI film caused by slits or faults at the edge of the AA area The layer is poor (Mura), and the formed PI film layer is complete (covering the entire AA area) and has a uniform thickness.

Description of drawings

FIG. 1 is a schematic structural diagram of a display substrate provided by the prior art;

Fig. 2 is one of the structural schematic diagrams of the display substrate provided by the embodiment of the present invention;

Fig. 3 is the second structural schematic diagram of the display substrate provided by the embodiment of the present invention;

Fig. 4 is the third schematic diagram of the structure of the display substrate provided by the embodiment of the present invention;

Fig. 5 is a cross-sectional view of the display substrate shown in Fig. 4 in the AA direction;

Fig. 6 is the fourth schematic diagram of the structure of the display substrate provided by the embodiment of the present invention;

Fig. 7 is the fifth schematic diagram of the structure of the display substrate provided by the embodiment of the present invention;

Fig. 8 is the sixth schematic diagram of the structure of the display substrate provided by the embodiment of the present invention;

FIG. 9 is the seventh schematic diagram of the structure of the display substrate provided by the embodiment of the present invention.

detailed description

An embodiment of the present invention provides a display substrate and a display device. By extending the common electrode line of the display substrate located in the display area to the peripheral area, it is connected to the peripheral common electrode in the peripheral area, and the connection area is located in the peripheral area to avoid When the display area is sprayed with PI liquid, the PI film layer formed by the PI liquid is poor due to the slits between the multiple independent connection areas of the display area.

The present invention proposes the common electrode lines and gate lines or data lines arranged on the same layer, and the common electrode lines are separated from each other in the display area, and it is necessary to electrically connect the common electrode lines in the display area or the peripheral area. Furthermore, it is proposed in view of the problem in the prior art that the common electrode lines are electrically connected in the display area by means of via-hole bridging, resulting in poor subsequent fabrication of the PI film layer. Therefore, the display substrate provided in the embodiment of the present invention may be an array substrate.

The common electrode lines are separated from each other in the display area because the gate lines or data lines extend to the peripheral area of the base substrate, and the common electrode lines cannot be connected across the gate lines or data lines in the display area.

The display substrate and the display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to Figure 2, the display substrate includes:

substrate substrate 1;

At least one peripheral common electrode 2 extending along the first direction located in the peripheral area of the base substrate 1;

Located in the display area of the base substrate 1 along the second direction intersecting with the first direction at least extending to a plurality of common electrode lines 3 in the area where the peripheral common electrodes 2 are located, the peripheral common electrodes 2 and the common electrode lines 3 are arranged in different layers;

The peripheral common electrode 2 and the common electrode line 3 are insulated in the intersecting area and connected in the peripheral area by vias.

The area enclosed by the dotted line box in FIG. 1 is the display area, and the area outside the dotted line box is the peripheral area.

There can be one or two peripheral common electrodes connected to each common electrode line. When there are two peripheral common electrodes, one of the peripheral common electrodes is connected to one end of each common electrode line, and the other peripheral common electrode is connected to each common electrode line. The other ends of the lines are connected, and the signal sources respectively provide common voltage signals for the two peripheral common electrodes, and the two peripheral common electrodes provide common voltage signals for the common electrode lines from both ends of each common electrode line.

The common electrode line of the present invention is connected to the common electrode in the display area, and is used to provide a common voltage signal for the common electrode, and the common electrode in the display area is used to form an electric field with the pixel electrode, to drive liquid crystal molecules to deflect, and to realize image display.

As can be seen from the display substrate shown in FIG. 2 , the common electrode lines 3 extend to the peripheral area of the base substrate 1 , and each common electrode line 3 is connected to the peripheral common electrodes 2 through via holes in the peripheral area. Since the common electrode line 3 and the peripheral common electrode 2 have an intersecting area (or referred to as an overlapping area), and the overlapping area is located in the peripheral area, the two are connected through a plurality of via holes in the peripheral area and a conductive sheet. That is, the connecting components for connecting the common electrode lines 3 and the peripheral common electrodes 2 are arranged in the peripheral area. When the PI liquid is formed in the AA region close to the peripheral common electrode 2, since the peripheral common electrode 2 is an integral structure, there is no local fault or slit area, when the PI liquid diffuses to the peripheral common electrode 2, it is affected by the peripheral common electrode 2. The resistance is consistent, the thickness of the PI film layer formed near the peripheral common electrode 2 is consistent, and there will be no unevenness or loss of the local PI film layer due to local slits, avoiding the edge of the AA area due to slits or The PI film layer caused by the fault is poor (Mura), and the formed PI film layer is complete (covering the entire AA area) and has a uniform thickness.

In the above-mentioned display substrate, the effective area of the PI film layer is the AA area. In the specific implementation process, in order to avoid missing or uneven thickness of the PI film layer at the edge of the AA area, the PI liquid is usually formed within a certain range of the peripheral area. That is, when the PI liquid passes over a certain range of the peripheral common electrode 2 , it can ensure that the PI film layer at the edge of the AA region is complete and has a uniform thickness.

The peripheral common electrode 2 shown in FIG. 2 may be linear with a set line width. Because of the simple structure of the linear peripheral common electrode 2 , on the one hand, its patterning process is relatively simple;

In order to increase the contact area between the common electrode line 3 and the peripheral common electrode 2 and prevent poor contact between the two, the width of the peripheral common electrode 2 will be wider. However, the peripheral common electrode 2 that is too wide increases the resistance of the PI liquid to cross the peripheral common electrode 2, and the PI liquid is not easy to cross, and there may be accumulation of PI in the AA area, resulting in a bad PI film.

Therefore, in order to ensure that the common electrode line 3 is in good contact with the peripheral common electrode 2 and the PI film layer does not cause defects, preferably, the peripheral common electrode 2 is "U"-shaped or comb-shaped, and the "U"-shaped or comb-shaped peripheral common electrode The opening orientation of 2 is consistent with the extension direction of the peripheral common electrode 2 .

Referring to FIG. 3 , the peripheral common electrode 2 is in a "U" shape. When the effective width of the peripheral common electrode 2 (the sum of the widths of the conductive film layers) is constant, the linear peripheral common electrode 2 is transformed into a "U"-shaped or comb-shaped peripheral common electrode 2, and the PI liquid passes through the peripheral common electrode 2 in turn. The local area with narrower width has less resistance, which can effectively solve the problem of poor PI film layer mentioned above.

Referring to Figure 4 and Figure 5, it is one of the specific structural schematic diagrams of the display substrate shown in Figure 2 or Figure 3; Figure 5 is a cross-sectional view of Figure 4 in the AA direction;

A preferred embodiment is:

The peripheral common electrode 2 and the common electrode line 3 are insulated by the first insulating layer 4 between them in the intersecting area, the first insulating layer 4 is located above the common electrode line 3, and the peripheral common electrode 2 is located above the first insulating layer 4 ;Also includes:

a second insulating layer 5 located on the peripheral common electrode 2;

A conductive sheet 6 on the second insulating layer 5;

The second insulating layer 5 is provided with a first via hole 51 extending to the peripheral common electrode 2, and a second via hole 52 extending to each common electrode line 3; The peripheral common electrode 2 is electrically connected to the common electrode line 3 exposed at the second via hole 52 .

Generally, the conductive sheet 6 can be transparent metal oxide ITO or IZO.

The peripheral common electrodes 2 and the common electrode lines 3 can be made of metal, and the conductivity of the metal is higher than that of metal oxides ITO or IZO, which can meet the requirements of the common electrode lines 3 to conduct signals quickly.

In the display substrate shown in FIG. 4 , the peripheral common electrode 2 can be in the shape of a straight line, a “U” shape or a comb shape.

Regardless of the structure type of the peripheral common electrodes, one or more conductive sheets can be provided on the display substrate.

When the conductive sheet is provided as a whole, the conductive sheet is connected to each common electrode line at the same time.

When there are multiple conductive sheets 6, one of the preferred implementations is:

Referring to FIG. 4 , a plurality of conductive sheets 6 are disposed on the second insulating layer, and the conductive sheets 6 are connected to the common electrode lines 3 in one-to-one correspondence. That is, each conductive sheet 6 is only used to connect the corresponding common electrode line 3 and the peripheral common electrode 2 .

The arrangement of the conductive sheet 6 shown in FIG. 4 can prevent the common electrode lines 3 and the peripheral common electrodes 2 from being disconnected when a whole conductive sheet falls off, which cannot quickly provide a common voltage signal for the common electrodes in the display area. In the present invention, even if some conductive thin sheets 6 fall off, it does not affect the phenomenon that the remaining conductive thin sheets 6 fall off.

Further, in the display substrate provided by the above embodiments, one first via hole and one second via hole may be provided in the area corresponding to each conductive sheet, or multiple first via holes and multiple second via holes may be provided.

Referring to FIG. 4 , a conductive sheet 6 is provided with a first via hole 51 and a first and second via hole 52 .

Referring to FIG. 6 , a plurality of first via holes 51 and a plurality of second via holes 52 are provided in the area corresponding to each conductive sheet 6 .

The display substrate shown in FIG. 6 can avoid that when a first via hole and a second via hole are arranged in the corresponding area of each conductive sheet 6, the conductive sheet 6 at the first via hole and/or the second via hole and the The common electrode lines 3 are in poor contact with the peripheral common electrodes 2 , resulting in the problem that the corresponding common electrode lines 3 cannot be provided with a common voltage signal. In the present invention, even if the conductive sheet 6 at part of the first via hole and/or the second via hole is in poor contact with the common electrode line 3 and the peripheral common electrode 2, the remaining conductive sheet 6 at the first via hole and/or the second via hole 6 can ensure that the common electrode line 3 is electrically connected to the peripheral common electrode 2 .

The number and relative positions of the first via hole 51 and the plurality of second via holes 52 provided in the corresponding area of each conductive sheet 6 are not limited. The second via hole 52 is located in the intersection area of the common electrode line 3 and the peripheral common electrode 2 , and the first via hole 51 may be located in the intersection area or a non-intersection area.

In any one of the display substrates shown in FIGS. 2 to 6 , the common electrode lines 3 may be straight or “L” shaped.

Generally, the line width of the common electrode lines 3 is relatively narrow, in order to avoid the problem of poor contact caused by the small contact area between the straight common electrode lines 3 and the peripheral common electrodes 2 . Preferably, the common electrode line 3 is "L" shaped.

On the basis of any one of the display substrates shown in FIGS. overlapping area), or located on the side of the peripheral common electrode 2 away from the display area (non-overlapping area).

Referring to FIG. 2 and FIG. 3 , the common electrode lines 3 are in an "L" shape, and the short sides of the "L"-shaped common electrode lines 3 are located in the area where the peripheral common electrodes 2 are located. As shown in FIG. 2 , the peripheral common electrode 2 is straight, and the short side of the “L”-shaped common electrode line 3 overlaps with the peripheral common electrode 2 . As shown in FIG. 3 , the peripheral common electrode 2 is a "U"-shaped or comb-shaped structure, and the short side of the "L"-shaped structure is located in the gap of the "U"-shaped structure, or in any gap of the comb-shaped structure. Certainly, the short side of the "L"-shaped structure may also overlap with the peripheral common electrode 2 of the "U"-shaped or comb-shaped structure.

Referring to FIG. 8, when the peripheral common electrode 2 is a "U"-shaped or comb-shaped structure, the short side of the "L"-shaped structure is located in the gap of the "U"-shaped structure, or in any gap of the comb-shaped structure, Then the conductive sheet 6 can cover the peripheral common electrodes on both sides of one notch or multiple notches, so as to increase the contact surface between the conductive sheet 6 and the peripheral common electrodes 2 and avoid poor contact.

Referring to FIG. 7 , the common electrode lines 3 are "L"-shaped, and the short side of the "L"-shaped common electrode lines 3 is located on the side of the peripheral common electrodes 2 away from the display area (non-overlapping area).

The common electrode line 3 of the above-mentioned "L"-shaped structure, the short side of the "L"-shaped common electrode line 3 can increase the overlapping area or contact area with the peripheral common electrode 2, and avoid the gap between the common electrode line 3 and the peripheral common electrode 2. Poor contact caused by limited contact area.

In any of the above embodiments, the positions of the first via hole and the second via hole are not limited, as long as the second via hole can expose the common electrode line and the first via hole can expose the peripheral common electrode.

Preferably, for the “L”-shaped common electrode line 3 , the second via hole 52 is located in a region corresponding to the short side of the “L”-shaped common electrode line 3 . Since the short side of the "L"-shaped common electrode line 3 is used to contact the peripheral common electrode 2, the length and width of the short side of the "L"-shaped common electrode line 3 can be as large as possible to increase the contact between the two area.

The present invention is not limited to connecting the common electrode lines and the peripheral common electrodes through the connection manner of the above-mentioned conductive sheets. A via hole may also be formed on the first insulating layer in a region where the common electrode line overlaps with the peripheral common electrode, and the peripheral common electrode is formed on the via hole to be electrically connected to the common electrode line.

Specifically, the display substrate further includes: a first insulating layer located between the common electrode line and the peripheral common electrode; a via hole is provided on the first insulating layer corresponding to the overlapping region , each common electrode line is connected to the peripheral common electrodes through the via holes.

As long as the common electrode lines involved in the display area cannot form an integrated structure on the same layer of the display area, and the PI film needs to be connected by connecting components in the display area, the display substrate provided by the above-mentioned embodiments of the present invention can be used. The setting method of the common electrode line and the peripheral common electrode.

One of the implementations is:

Referring to FIG. 9, the display substrate is an array substrate, and the base substrate 1 is provided with peripheral common electrodes 2 and common electrode lines 3;

The grid lines 7 arranged on the same layer as the common electrode lines 3, and the common electrode lines 3 are arranged in parallel with the grid lines 7;

The data line 8 is arranged on the same layer as the peripheral common electrode 2, and the peripheral common electrode 2 is arranged in parallel with the data line 8;

The gate line 7 and the data line 8 surround a plurality of pixels, and each pixel is provided with a pixel electrode 9; the pixel electrode 9 is connected to the gate line 7 and the data line 8 through a switching element.

The arrangement of the common electrode lines and the gate lines on the same layer can simplify the process flow, and the arrangement of the peripheral common electrodes and the data lines on the same layer can simplify the process flow.

An embodiment is that: the array substrate further includes a common electrode disposed on a different layer from the pixel electrodes, and the common electrode line is electrically connected to the common electrode through a via hole.

The color filter and the black matrix can be arranged on the array substrate, and can also be arranged on the color filter substrate.

Another embodiment is: the common electrode is arranged on a substrate opposite to the array substrate (such as a color filter substrate), and the common electrode lines arranged on the array substrate are electrically connected to the common electrode through conductive silver glue.

An embodiment of the present invention also provides a display device, including any display substrate provided by the present invention above, and the display device can be an advanced super-dimensional field switching (ADS) mode or its improved display device, fringe field switching (FFS) mode display device or vertical nematic (TN) mode display device, etc., the display device may be a display device such as a liquid crystal display panel, a liquid crystal display, or a liquid crystal television.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (8)

1. a substrate for display, it is characterised in that including:

Underlay substrate；

It is positioned at least one peripheral public electrode that the outer peripheral areas of described underlay substrate extends in a first direction；

It is positioned at the viewing area of described underlay substrate at least extend to along the second direction intersected with first direction The a plurality of public electrode wire of described peripheral public electrode region, described peripheral public electrode is public with described Electrode wires different layers is arranged；

Described peripheral public electrode insulate and in outer peripheral areas in the region intersected mutually with described public electrode wire Connect by the way of via is put up a bridge；

Described peripheral public electrode is " U " type or pectination, " U " type or the opening of pectination periphery public electrode Towards consistent with the bearing of trend of peripheral public electrode.

Substrate for display the most according to claim 1, it is characterised in that described peripheral public electrode Insulated mutually by the first insulating barrier therebetween in the region intersected with described public electrode wire, described first Insulating barrier is positioned at above described public electrode wire, and described peripheral public electrode is positioned on described first insulating barrier Side；

Also include:

It is positioned at the second insulating barrier on described peripheral public electrode；

It is positioned at the conductive foil on described second insulating barrier；

It is provided with the first via extending to peripheral public electrode on described second insulating barrier, and extends to every Second via of one public electrode wire；Described conductive foil respectively with described first via at expose peripheral public The public electrode wire electrical connection exposed at common electrode and the second via.

Substrate for display the most according to claim 2, it is characterised in that on described second insulating barrier Being provided with multiple described conductive foil, described conductive foil is connected with described public electrode wire one_to_one corresponding.

Substrate for display the most according to claim 3, it is characterised in that with each conductive foil pair The region answered is provided with multiple first via and multiple second via.

Substrate for display the most according to claim 4, it is characterised in that described public electrode wire is " L " type, the minor face of described " L " type public electrode wire is positioned at described peripheral public electrode region, or The peripherally located public electrode of person is away from the side of viewing area.

Substrate for display the most according to claim 5, it is characterised in that described " L " type common electrical The minor face of polar curve is positioned in the breach of " U " type structure, or is positioned in arbitrary breach of pectinate texture.

Substrate for display the most according to claim 6, it is characterised in that described second via is positioned at The region corresponding with the minor face of described L-shaped structure.

8. a display device, it is characterised in that include the arbitrary described display base of claim 1-7 Plate.