CN116301427A - Display panel, display device, mask and method for manufacturing display panel - Google Patents

Abstract

The invention provides a display panel, a display device, a mask plate and a manufacturing method of the display panel. A display panel including a substrate; a main display area and a first display area; the touch electrode layer comprises a first touch electrode arranged in the main display area and a second touch electrode arranged in the first display area; the touch electrode wire is electrically connected to the first touch electrode; the display panel can be respectively applied to a first display device or a second display device, the first display device is provided with a first display area, the second display device is provided with a second display area, the first display area is different from the second display area, the first display area comprises a main display area and a first secondary display area, and the second display area comprises the main display area and does not comprise the first secondary display area; the touch electrode layer is formed by adopting the same mask plate; in the second display device, the touch electrode line is not electrically connected to the second touch electrode.

Description

Display panel, display device, mask and method for manufacturing display panel

technical field

The present invention relates to a display panel and a display device using the same, and in particular to a display panel capable of sharing a mask, a display device, a manufacturing method thereof, and a mask used in the manufacturing process.

Background technique

With the development of science and technology, display devices are widely used in many electronic products, such as mobile phones, tablet computers, watches, cars and so on.

For the same series of display devices, the size and resolution are the same, and the only difference is the size of the opening (flowing sea), such as IPHONE12 and IPHONE13. When manufacturing the same series of display devices with different openings, different mask plates need to be developed correspondingly, which increases the cost.

In addition, in display devices with different opening areas, if the touch electrode layer is shared, in a display device with a larger opening area, a large area of floating touch electrode layers will remain, and these floating touch electrode layers are due to Failure to electrically connect to other circuits will cause charge accumulation, which will lead to light leakage at the edge of the opening area.

Therefore, how to provide a display panel and a display device that can share a mask, reduce production costs, increase production efficiency, and improve display quality is one of the problems to be solved.

Contents of the invention

Embodiments of the present invention provide a display panel, a display device and a manufacturing method thereof, and a mask used in the manufacturing process, which can share the mask of the touch electrode layer between display devices with different openings, reducing production costs , improve production efficiency, and can effectively avoid light leakage near the opening and improve display quality.

A display panel according to an embodiment of the present invention includes a substrate; a main display area disposed on the substrate; a primary display area disposed on the substrate and adjacent to the main display area; a touch electrode layer, including a first touch electrode arranged in the main display area and a second touch electrode arranged in the first display area; a touch electrode line electrically connected to the first touch electrode; the The display panel can be respectively applied to a first display device or a second display device, the first display device has a first display area, the second display device has a second display area, and the first display The area is different from the second display area, the first display area includes the main display area and the first display area, and the second display area includes the main display area and does not include the first display area. A sub-display area; wherein, the touch electrode layer is formed using the same mask; in the second display device, the touch electrode lines are not electrically connected to the second touch electrodes.

The above display panel, wherein the display panel further comprises:

a second display area, disposed on the substrate and adjacent to the main display area;

an opening, disposed on the substrate and adjacent to the first display area and the second display area;

The second display device has a second non-display area, the second non-display area includes the opening and the first display area; and

a common electrode line;

Wherein, in the second display device, at least part of the common electrode lines are arranged in the second non-display area along the inner edge of the second non-display area, and the second touch electrodes are electrically connected to to the common electrode line.

The display panel above, wherein the display panel further includes: a flat layer disposed on the substrate; wherein the common electrode line is disposed between the substrate and the flat layer, and the second touch electrode set on the flat layer.

The display panel above, wherein the display panel further includes: an insulating layer disposed on the touch electrode layer; and a pixel electrode layer disposed on the insulating layer; wherein, in the second display device wherein, the planar layer is provided with a first opening, the first opening exposes part of the common electrode line, the pixel electrode layer extends to the first opening, and the second touch electrode passes through the first The pixel electrode layer in the opening is electrically connected to the common electrode line.

The above display panel, wherein, the insulating layer is provided with a second opening, the second opening exposes part of the second touch electrode, and the pixel electrode layer extends to the first opening and the second opening and contact the common electrode line and the second touch electrode.

In the above display panel, the first display device and the second display device have the same size and/or the same resolution.

A display device according to an embodiment of the present invention includes: any one of the above-mentioned display panels.

A method for manufacturing a display panel according to an embodiment of the present invention includes: providing a substrate having a main display area and a primary display area adjacently arranged; forming a touch electrode layer and a touch electrode layer on the substrate; The control electrode line, the touch electrode layer includes the first touch electrode arranged in the main display area and the second touch electrode arranged in the first display area; the touch electrode line is electrically connected to the first touch electrode; the display panel can be applied to a first display device or a second display device respectively, the first display device has a first display area, and the second display device has a a second display area, and the first display area is different from the second display area, the first display area includes the main display area and the first display area, and the second display area includes the The main display area does not include the first display area; wherein, the touch electrode layer is formed using the same mask; in the second display device, the touch electrode lines are electrically connected to the The first touch electrode is not electrically connected to the second touch electrode.

The above method, wherein the display panel further includes a second display area and an opening, the second display area is disposed on the substrate and adjacent to the main display area;

The opening is disposed on the substrate and adjacent to the first display area and the second display area, the second display device has a second non-display area, and the second non-display area includes the an opening and the first display area;

The method further comprises:

forming a common electrode line; wherein, in the second display device, at least part of the common electrode line is disposed in the second non-display area along the inner edge of the second non-display area, and the second The touch electrodes are electrically connected to the common electrode lines.

The above method, wherein the method further includes: forming a flat layer on the common electrode line; wherein the common electrode line is disposed between the substrate and the flat layer, and the second touch electrode set on the flat layer.

The above method, wherein, the method further includes: forming an insulating layer on the touch electrode layer; forming a pixel electrode layer on the insulating layer; wherein, in the second display device, the The flat layer is provided with a first opening, and the first opening exposes part of the common electrode line; the pixel electrode layer extends to the first opening, and the second touch electrode passes through the first opening. The pixel electrode layer is electrically connected to the common electrode line.

The above method, wherein, the insulating layer is provided with a second opening, the second opening exposes part of the second touch electrode, the pixel electrode layer extends to the first opening and the second opening and contacting the common electrode line and the second touch electrode.

A mask plate according to an embodiment of the present invention is used to manufacture any one of the above-mentioned display panels. The mask plate includes: a main body portion, the main body portion has a first area and a second area adjacent to each other, the The first area includes a first pattern for forming the first touch electrode, and the second area includes a second pattern for forming the second touch electrode.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a first display device according to an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a second display device according to an embodiment of the present invention.

FIG. 4 is an enlarged schematic view of area A in FIG. 3 .

Fig. 5 is a schematic cross-sectional view along B-B' in Fig. 3 .

FIG. 6 is an enlarged schematic view of area A in FIG. 2 .

Among them, reference signs:

100: display panel

101: Substrate

102: main display area

103: Display area for the first time

104: The second display area

105: opening

106: the first non-display area

107: Second non-display area

108: Touch electrode layer

1081: the first touch electrode

1082: the second touch electrode

109: Touch electrode wire

110: common electrode line

111: flat layer

112: insulation layer

113: pixel electrode layer

114: first opening

115: second opening

200: first display device

200': Second display device

AA1: the first display area

AA2: second display area

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

1 is a schematic structural view of a display panel according to an embodiment of the present invention, FIG. 2 is a schematic structural view of a first display device according to an embodiment of the present invention, and FIG. 3 is a schematic structural view of a second display device according to an embodiment of the present invention. As shown in FIGS. 1-3 , the display panel 100 of the present invention includes a substrate 101 , a main display area 102 , a first display area 103 , a second display area 104 and an opening 105 .

Specifically, as shown in FIG. 1 , in the display panel 100 , the main display area 102 , the first display area 103 , the second display area 104 and the opening 105 are all disposed in the substrate 101 .

As shown in FIG. 2 and FIG. 3 , the display panel 100 can be applied to the first display device 200 or the second display device 200', respectively. The first display device 200 and the second display device 200' have the same size and/or the same resolution. Wherein, the first display device 200 has a first display area AA1, and the second display device 200' has a second display area AA2, and the first display area AA1 is different from the second display area AA2.

As shown in Figures 1 and 2, the first display device 200 has a first display area AA1 and a first non-display area 106 (notch), the first display area AA1 is set corresponding to the first non-display area 106, and the first display area AA1 is composed of the main display area 102 and the primary display area 103 .

As shown in Fig. 1 and Fig. 3, the second display device 200' has a second display area AA2 and a second non-display area 107 (notch), the second display area AA2 is set corresponding to the second non-display area 107, and the second display The area AA2 is composed of the main display area 102 and the secondary display area 104 .

That is to say, the overlapping area of the first display area AA1 and the second display area AA2 corresponds to the main display area 102 , and the overlapping area of the first non-display area 106 and the second non-display area 107 corresponds to the opening 105 .

It can be seen from FIG. 1 to FIG. 3 that the display areas formed by the first display area AA1 of the first display device 200 and the second display area AA2 of the second display device 200' are different. Correspondingly, the first non-display area 106 of the first display device 200 is different from the second non-display area 107 of the second display device 200 ′, that is, the first non-display area 106 is perpendicular to the surface on the substrate 101 The projection is different from the projection of the second non-display area 107 perpendicular to the substrate 101 .

In one embodiment, the first non-display area 106 of the first display device 200 may include the second display area 104 and the opening 105 . The second non-display area 107 of the second display device 200' may include the first display area 103 and the opening 105.

As shown in FIG. 2 and FIG. 3, the first non-display area 106 of the first display device 200 may be covered by a first light-shielding layer (not shown in the figure), and the second non-display area 106 of the second display device 200' The display area 107 may be covered by a second light-shielding layer (not shown in the figure). Correspondingly, the first light shielding layer exposes the first display area AA1, and the second light shielding layer exposes the second display area AA2.

As shown in FIG. 1 to FIG. 3 , from another perspective, the first light-shielding layer used for the first display device 200 covers the opening 105 and the second display area 104 , and the second display area 104 for the second display device 200 ′. The light shielding layer covers the opening 105 and the first display area 103 . That is, the second display area 104 is covered by the first light-shielding layer when used in the first display device 200, and is used as a display area when used in the second display device 200'. The primary display area 103 is used as a display area when used in the first display device 200, and is covered by the second light-shielding layer when used in the second display device 200'.

Fig. 4 is an enlarged schematic view of area A in Fig. 3, and Fig. 5 is a schematic cross-sectional view along B-B' in Fig. 3 . As shown in FIG. 1 to FIG. 4 , for touch display devices, in the first display device 200 and the second display device 200', the display panel 100 is further provided with a touch electrode layer 108. Wherein, the touch electrode layer 108 includes first touch electrodes 1081 disposed in the main display area 102 and second touch electrodes 1082 disposed in the first display area 103 . For the first display device 200, the first display area 103 is used as a display area, and the second touch electrode 1082 in the first display area 103 is the same as the first touch electrode 1081 in the main display area 102, and both need to be connected to the corresponding touch electrode lines 109 (not shown in the figure), so as to receive touch sensing signals during the touch sensing stage. For the second display device 200', the first display area 103 is covered by a light-shielding layer and is not used as a display area, and the second touch electrodes 1082 in the first display area 103 are not electrically connected to the touch electrode lines 109 . In order to share the mask of the touch electrode layer 108 between different display devices, when the display panel 100 is applied to the first display device 200 and the second display device 200' respectively, the touch electrode layer 108 is formed using the same mask.

FIG. 6 is an enlarged schematic view of area A in FIG. 2 . As shown in FIGS. 1-6 , the display panel 100 is further provided with a common electrode line 110 , wherein the common electrode line 110 is disposed corresponding to a non-display area of the display device.

In one embodiment, as shown in FIG. 3 and FIG. 4, in the second display device 200', at least part of the common electrode lines 110 are arranged around the second non-display area 107 and located in the second non-display area 107, that is, That is, the common electrode lines 110 are disposed along the inner edge of the second non-display area 107 , thus at least part of the common electrode lines 110 are located in the first display area 103 and the opening area 105 .

As shown in FIG. 2 and FIG. 6, in the first display device 200, at least part of the common electrode lines 110 are arranged around the first non-display area 106 and located in the first non-display area 106, that is, the common electrode lines 110 are arranged along the It is arranged along the inner edge of the first non-display area 106 , so that at least part of the common electrode lines 110 are located in the second display area 104 and the opening area 105 .

Preferably, the common electrode line 110 is electrically connected to the ground GND potential for shielding the display panel 100 from external electromagnetic interference and electrical noise.

Specifically, as shown in FIG. 5 , a common electrode line 110 is disposed on the substrate 101 of the display panel 100 , and the common electrode line 110 is made of, for example, the second metal layer M2 . The planar layer 111 covers the common electrode line 110 such that the common electrode line 110 is disposed between the substrate 101 and the planar layer 111 . The second touch electrode 1082 is disposed on the planar layer 111 , and the insulating layer 112 is disposed on the second touch electrode 1082 , wherein the second touch electrode 1082 is made of, for example, the first transparent conductive layer. Wherein, the insulating layer 112 may include multiple layers, wherein a part of the insulating layer 112 is disposed between the second touch electrode 1082 and the planar layer 111 , and another part of the insulating layer 112 is disposed on the second touch electrode 1082 . The present invention only takes the above structure of the insulating layer as an example, and is not limited thereto.

A pixel electrode layer 113 is further provided on the insulating layer 112, wherein the pixel electrode layer 113 is made of, for example, a second transparent conductive layer, and the first transparent conductive layer and the second transparent conductive layer can use the same or different film layers, such as ITO (indium tin oxide).

In order to realize the electrical connection between the second touch electrodes 1082 and the common electrode lines 110 , a first opening 114 is provided in the planar layer 111 , and the first opening 114 exposes part of the common electrode lines 110 . Similarly, a second opening 115 is provided in the insulating layer 112, the second opening 115 exposes part of the second touch electrode 1082, and the pixel electrode layer 113 extends to the first opening 114 and contacts the common electrode line 110, realizing the pixel electrode layer 113. electrical connection with the common electrode line 110 . The pixel electrode layer 113 continues to extend to the second opening 115 and contacts the second touch electrode 1082 to realize the electrical connection between the pixel electrode layer 113 and the second touch electrode 1082 . Thus, the second touch electrode 1082 is electrically connected to the common electrode line 110 through the pixel electrode layer 113 .

Based on the above, in the display device 200 ′ with a large opening area, the large-area touch electrode layer in the first display area 103 is electrically connected to the common electrode line 110 , so that the originally floating touch electrode layer Being electrically connected to the ground potential will not cause charge accumulation, thereby avoiding light leakage at the edge of the opening area.

The above is applied to two kinds of display devices as an example. For the situation of applying to multiple display devices, the area where the display areas of multiple display devices overlap corresponds to the main display area. In the display area of each display device, except for the main display Other display areas outside the area are defined as secondary display areas. The area where the non-display areas of the various display devices overlap corresponds to the opening, and the non-display area of each display device is composed of the opening and the sub-display areas of other display devices.

Of course, the specific structures of the display panel, the display device, and other film layer structures therebetween will not be described in detail here.

Regarding the manufacturing method of the display panel of the present invention, as shown in FIG. 1 to FIG. 6 , the manufacturing method of the display panel 100 includes the following steps:

Firstly, a substrate 101 is provided, and the substrate 101 has a main display area 102 , a primary display area 103 , a second secondary display area 104 and an opening 105 arranged adjacently.

Next, the touch electrode layer 108 and the touch electrode line 109 are formed on the substrate 101. The touch electrode layer 108 includes the first touch electrode 1081 arranged in the main display area 102 and the first touch electrode 1081 arranged in the first display area 103. The second touch electrode 1082 , and the touch electrode line 109 is electrically connected to the first touch electrode 1081 .

In the present invention, the display panel 100 can be respectively applied to the first display device 200 or the second display device 200', the first display device 200 has a first display area AA1, and the second display device 200' has a second display area AA2, The first display area AA1 is different from the second display area AA2, the first display area AA1 includes the main display area 102 and the first display area 103, the second display area AA2 includes the main display area 102 and does not include the first display area 103 , however, the second display area AA2 includes the main display area 102 and the second display area 104 .

For the first display device 200 , the first display area 103 is used as a display area, and the second touch electrodes 1082 in the first display area 103 are electrically connected to the corresponding touch electrode lines 109 . For the second display device 200', the first display area 103 is covered by a light-shielding layer and is not used as a display area, and the second touch electrodes 1082 in the first display area 103 are not electrically connected to the touch electrode lines 109 .

In order to share the mask of the touch electrode layer 108 between different display devices, when the display panel 100 is applied to the first display device 200 and the second display device 200' respectively, the touch electrode layer 108 is formed using the same mask.

Then, the common electrode lines 110 are formed on the substrate 101 , at least part of the common electrode lines 110 are disposed corresponding to the non-display area of the display device and disposed in the non-display area.

A flat layer 111 is then formed on the common electrode line 110 , the common electrode line 110 is formed between the substrate 101 and the flat layer 111 , and a first opening 114 is formed in the first opening 114 .

The second touch electrode 1082 is formed on the flat layer 111 , and the insulating layer 112 is formed on the touch electrode layer 108 , and the second opening 115 is formed in the insulating layer 112 .

Finally, a pixel electrode layer 113 is formed on the insulating layer 112 .

Specifically, as shown in FIG. 5 , for the second display device 200 ′, since the flat layer 111 of the display panel 100 is provided with the first opening 114 , and the first opening 114 exposes part of the common electrode line 110 , the pixel electrode layer 113 extends to The first opening 114 , thus, in the first opening 114 , the pixel electrode layer 113 contacts the common electrode line 110 and is electrically connected to the common electrode line 110 .

In addition, since the insulating layer 112 is provided with the second opening 115 , the second opening 115 exposes part of the second touch electrode 1082 , the pixel electrode layer 113 continues to extend from the first opening 114 to the second opening 115 , and contacts the second opening 115 The exposed part of the second touch electrode 1082 realizes the electrical connection between the pixel electrode layer 113 and the second touch electrode 1082 . Thus, the second touch electrode 1082 is electrically connected to the common electrode line 110 through the pixel electrode layer 113 .

Certainly, the specific structures in the display panel and the display device and the manufacturing methods of other film layer structures will not be described in detail here.

In the manufacturing process of the display panel 100 , the formation of the touch electrode layer requires the use of a mask, and the present invention also provides a mask used for manufacturing the display panel. As shown in Figure 1-Figure 5, the mask plate of the present invention includes:

The main body part has a first area and a second area adjacent to each other. Wherein, the first area includes a first pattern, the first pattern is used to form the first touch electrode, and the second area includes a second pattern, and the second pattern is used to form the second touch electrode.

According to an embodiment of the present invention, for different display devices with the same size and the same resolution, the same mask can be used to form the touch electrode layer in the main display area and the corresponding sub display area to form the touch electrodes respectively. The area where the display areas of multiple display devices overlap corresponds to the main display area, and among the display areas of each display device, other display areas except the main display area are defined as secondary display areas. The area where the non-display areas of various display devices overlap corresponds to the opening, and the non-display area of each display device may be composed of the opening and the sub-display areas of other display devices. Thus, different display devices can be formed by disposing corresponding light-shielding layers. The requirement for the number of layers of mask plates between different types of display devices is reduced, the production cost is saved, and the production efficiency is improved. It can also avoid the occurrence of light leakage in the opening area and improve the display quality.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (13)

1. A display panel, comprising:

a substrate;

a main display area arranged on the substrate;

a first display area arranged on the substrate and adjacent to the main display area;

the touch electrode layer comprises a first touch electrode arranged in the main display area and a second touch electrode arranged in the secondary display area;

the touch electrode wire is electrically connected to the first touch electrode;

the display panel can be respectively applied to a first display device or a second display device, the first display device is provided with a first display area, the second display device is provided with a second display area, the first display area is different from the second display area, the first display area comprises the main display area and the first secondary display area, and the second display area comprises the main display area and does not comprise the first secondary display area;

the touch electrode layer is formed by adopting the same mask plate; in the second display device, the touch electrode line is not electrically connected to the second touch electrode.

2. The display panel of claim 1, wherein the display panel further comprises:

a second display area arranged on the substrate and adjacent to the main display area;

an opening disposed on the substrate and adjacent to the first sub-display area and the second sub-display area;

the second display device is provided with a second non-display area, and the second non-display area comprises the opening and the first display area; and

a common electrode line;

in the second display device, at least a portion of the common electrode lines are disposed in the second non-display area along the inner edge of the second non-display area, and the second touch electrodes are electrically connected to the common electrode lines.

3. The display panel of claim 1 or 2, wherein the display panel further comprises:

a flat layer arranged on the substrate; wherein the method comprises the steps of

The common electrode wire is arranged between the substrate and the flat layer, and the second touch electrode is arranged on the flat layer.

4. The display panel of claim 3, wherein the display panel further comprises:

the insulating layer is arranged on the touch electrode layer; and

a pixel electrode layer disposed on the insulating layer;

in the second display device, the flat layer is provided with a first opening, the first opening exposes a part of the common electrode line, the pixel electrode layer extends to the first opening, and the second touch electrode is electrically connected to the common electrode line through the pixel electrode layer in the first opening.

5. The display panel according to claim 4, wherein the insulating layer is provided with a second opening exposing a portion of the second touch electrode, and the pixel electrode layer extends to the first opening and the second opening and contacts the common electrode line and the second touch electrode.

6. The display panel of claim 1, wherein the first display device and the second display device have the same size and/or the same resolution therebetween.

7. A display device, comprising:

a display panel according to any one of claims 1-6.

8. A method of manufacturing a display panel, comprising:

providing a substrate, wherein the substrate is provided with a main display area and a first display area which are adjacently arranged;

forming a touch electrode layer and a touch electrode line on the substrate, wherein the touch electrode layer comprises a first touch electrode arranged in a main display area and a second touch electrode arranged in a first display area; the touch electrode wire is electrically connected to the first touch electrode;

the display panel can be respectively applied to a first display device or a second display device, the first display device is provided with a first display area, the second display device is provided with a second display area, the first display area is different from the second display area, the first display area comprises the main display area and the first secondary display area, and the second display area comprises the main display area and does not comprise the first secondary display area;

the touch electrode layer is formed by adopting the same mask plate; in the second display device, the touch electrode wire is electrically connected to the first touch electrode and is not electrically connected to the second touch electrode.

9. The method of claim 8, wherein the display panel further comprises a secondary display area and an opening, the secondary display area being disposed on the substrate and adjacent to the primary display area;

the opening is arranged on the substrate and is adjacent to the first display area and the second display area, the second display device is provided with a second non-display area, and the second non-display area comprises the opening and the first display area; the method further comprises:

forming a common electrode line;

in the second display device, at least a portion of the common electrode lines are disposed in the second non-display area along the inner edge of the second non-display area, and the second touch electrodes are electrically connected to the common electrode lines.

10. The method of claim 8 or 9, wherein the method further comprises:

forming a flat layer on the common electrode line; wherein the method comprises the steps of

The common electrode wire is arranged between the substrate and the flat layer, and the second touch electrode is arranged on the flat layer.

11. The method of claim 10, wherein the method further comprises:

forming an insulating layer on the touch electrode layer;

forming a pixel electrode layer on the insulating layer;

wherein, in the second display device, the flat layer is provided with a first opening exposing a portion of the common electrode line; the pixel electrode layer extends to the first opening, and the second touch electrode is electrically connected to the common electrode line through the pixel electrode layer in the first opening.

12. The method of claim 11, wherein the insulating layer is provided with a second opening exposing a portion of the second touch electrode, the pixel electrode layer extending to the first opening and the second opening and contacting the common electrode line and the second touch electrode.

13. A mask blank for manufacturing a display panel according to any one of claims 1 to 6, the mask blank comprising:

the main body part is provided with a first area and a second area which are adjacent to each other, the first area comprises a first pattern, the first pattern is used for forming the first touch electrode, the second area comprises a second pattern, and the second pattern is used for forming the second touch electrode.

Images