CN104951121B - Touch display screen and preparation method thereof and display device - Google Patents

Abstract

The present invention relates to a touch display screen, a manufacturing method thereof, and a display device. The touch display screen includes: a substrate, a conductive metal layer arranged on one side of the substrate, and the conductive metal layer includes: a plurality of first electrodes arranged along a first direction , a plurality of second electrodes arranged along the second direction, the first direction is perpendicular to the second direction, wherein two adjacent second electrodes are connected through the first conductive part and the second conductive part, between the two conductive parts An overlapping portion insulated from the second electrode, the first conductive portion, and the second conductive portion is arranged between them, and the conductive metal layer further includes: a first bridge portion and a second bridge portion disposed between two adjacent first electrodes The first bridging portion is electrically connected to one of the first electrodes of the two first electrodes and the overlapping portion, and the second bridging portion is electrically connected to the other first electrode of the two first electrodes and the overlapping portion. Through the technical solution of the present invention, the display effect can be improved without affecting the touch effect.

Description

Touch display screen, manufacturing method thereof, and display device

technical field

The present invention relates to the field of display technology, in particular, to a touch display screen, a method for manufacturing a color filter, and a display device.

Background technique

In the prior art, the multi-touch design on the on cell display panel generally adopts a metal bridging structure, and the bridging is a single bridge solution. As shown in FIG. 1 , the metal layer on the touch screen in the prior art generally includes electrodes arranged in the x direction and the y direction (for example, ITO, ie, indium tin oxide).

As shown in FIG. 2 , a display unit is arranged under the metal layer, wherein the primary color units R (red), G (green) and B (blue) are parallel to the x direction. As shown in Figure 3, another single-bridge structure adopts an oblique single-bridge scheme. The bridging part obliquely spans three primary color units. Although it can improve the bridging shadow effect and the grating interference effect, the bridging part and the electrodes in the y direction The larger the facing area, the larger the resulting coupling capacitance, and the larger the coupling capacitance, the lower the touch sensitivity.

Contents of the invention

The technical problem to be solved by the present invention is how to conduct the electrodes in the x direction through the bridging structure, and ensure that the facing area between the bridging part and the y direction electrode is small, thereby reducing the coupling capacitance between the bridging part and the y direction electrode, thereby improving Touch sensitivity.

For this purpose, the present invention proposes a kind of touch display screen, comprises:

base,

a conductive metal layer disposed on one side of the substrate,

The conductive metal layer includes:

a plurality of first electrodes arranged along a first direction, a plurality of second electrodes arranged along a second direction, the first direction is perpendicular to the second direction,

Wherein, the adjacent two second electrodes are connected through the first conductive part and the second conductive part, and the second electrode and the first conductive part and the second conductive part are arranged between the two conductive parts. Partially insulated lap joints,

The conductive metal layer also includes:

A first bridging portion and a second bridging portion disposed between two adjacent first electrodes, the first bridging portion is electrically connected to one of the two first electrodes and the overlapping portion connected, the second bridging portion is electrically connected to the other first electrode of the two first electrodes and the overlapping portion.

Preferably, it also includes:

a display unit disposed on the other side of the substrate, the primary color units in the display unit are parallel to the first direction,

Then the first bridging portion is parallel to the second bridging portion and forms a preset angle with the first direction, and the preset angle ranges from 0° to 90°.

Preferably, it also includes:

an insulating film disposed between the first bridge portion and the first conductive portion, and between the second bridge portion and the second conductive portion, respectively,

Wherein, the first conductive part is close to one first electrode of the two first electrodes, and the second conductive part is close to the other first electrode of the two first electrodes.

Preferably, the first conductive part and the second conductive part are made of the same material as the two adjacent second electrodes, and are integrally structured with the two adjacent second electrodes.

Preferably, the material of the overlapping portion is the same as that of the two adjacent second electrodes.

Preferably, the material of the second electrode and the first electrode is indium tin oxide or indium zinc oxide.

The present invention also proposes a display device, including the touch display screen described in any one of the above.

The present invention also proposes a method for manufacturing a touch display screen, including:

forming a conductive metal layer on one side of the substrate;

Etching the conductive metal layer to form a plurality of first electrodes arranged along a first direction, a plurality of second electrodes arranged along a second direction in the conductive metal layer, the first direction and the The second direction is vertical, and two adjacent second electrodes are connected through the connecting part;

Etching the connecting portion, so that the connecting portion forms a first conductive portion and a second conductive portion connected to the two adjacent second electrodes, and a connection between the two conductive portions and The second electrode is insulated from the first conductive part and the second conductive part;

A first bridging portion and a second bridging portion are formed between two adjacent first electrodes, so that the first bridging portion is connected to one of the two first electrodes and the overlapping portion Electrically connected, the second bridging portion is electrically connected to the other first electrode of the two first electrodes and the overlapping portion.

Preferably, it also includes:

A display unit is formed on the other side of the substrate, the primary color units in the display unit are parallel to the first direction,

Then forming the first bridging portion and the second bridging portion includes:

The first bridging portion is parallel to the second bridging portion and forms a preset angle with the first direction, and the preset angle ranges from 0° to 90°.

Preferably, before forming the first bridging portion and the second bridging portion, it further includes:

an insulating film is formed between the first bridge portion and the first conductive portion, and an insulating film is formed between the second bridge portion and the second conductive portion,

Wherein, the first conductive part is close to one first electrode of the two first electrodes, and the second conductive part is close to the other first electrode of the two first electrodes.

According to the above technical solution, the electrical connection of the second electrode in the second direction can be ensured through the two conductive parts, and the first bridge part and the second bridge part can be conducted through the overlapping part, so that the second electrode in the first direction An electrode is electrically connected, and since the overlapping portion is insulated from the two conductive portions, there is a certain distance between the overlapping portion and the two conductive portions, so that the first bridge portion and the second bridge portion are connected to the two conductive portions and the overlapping portion. The facing area of the connecting portion is reduced, thereby reducing the coupling capacitance between the bridge portion and the second electrode. Moreover, setting the two bridging portions at a preset angle with the first direction can make the two bridging portions not parallel to the primary color unit, thereby improving the bridging shadow effect and reducing the grating interference effect.

Description of drawings

The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the invention in any way. In the accompanying drawings:

Figures 1 to 2 show a single bridge structure in the prior art;

Fig. 3 shows another kind of single bridge structure in the prior art;

Fig. 4 shows a partial structural schematic diagram of a conductive metal layer in a touch display screen according to an embodiment of the present invention;

Fig. 5 shows a partial structural schematic diagram of a conductive metal layer in a touch display screen according to yet another embodiment of the present invention;

Fig. 6 shows a partial structural schematic diagram of a conductive metal layer in a touch display screen according to yet another embodiment of the present invention;

Fig. 7 shows a schematic flowchart of a method for manufacturing a touch display screen according to yet another embodiment of the present invention.

Explanation of reference numbers:

1-first electrode; 2-second electrode; 21-first conductive part; 22-second conductive part; 23-lapping part; 31-first bridging part; 32-second bridging part; 4-insulating film .

Detailed ways

In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

As shown in Figure 4, the touch display screen according to one embodiment of the present invention includes:

The base (not shown in the figure) can be made of glass,

a conductive metal layer disposed on one side of the substrate,

Conductive metal layers include:

A plurality of first electrodes 1 arranged along the first direction, and a plurality of second electrodes 2 arranged along the second direction, the first direction and the second direction are perpendicular, in order to make the description concise and easy to understand, the x direction is used to represent the first electrode in the figure. direction, the y direction represents the second direction.

Wherein, two adjacent second electrodes 2 are connected through the first conductive part 21 and the second conductive part 22, and the second electrode 2 and the first conductive part 21 and the second conductive part are arranged between the two conductive parts. 22 insulated laps 23,

The conductive metal layer also includes:

The first bridging portion 31 and the second bridging portion 32 arranged between two adjacent first electrodes 1, the first bridging portion 31 is electrically connected to one of the two first electrodes 1 and the overlapping portion 23 The second bridging portion is electrically connected to the other first electrode of the two first electrodes 1 and the overlapping portion 23 .

Through the first conductive part 21 and the second conductive part 22, the electrical connection of the adjacent second electrodes 2 in the y direction can be ensured, and through the overlapping part 23, the first bridge part 31 and the second bridge part 31 can be conducted. , so that the adjacent first electrodes 1 in the x direction are electrically connected.

And because the overlapping portion 23 is insulated from the two conductive portions, there is a certain interval between the overlapping portion 23 and the two conductive portions, so that the first bridge portion 31 and the second bridge portion 32 are connected to the two conductive portions and the overlapping portion. The facing area of the contact portion 23 is reduced, thereby reducing the coupling capacitance between the bridge portion and the second electrode 2 , and improving the touch sensitivity of the electrode.

Preferably, it also includes:

The display unit arranged on the other side of the base, the primary color unit in the display unit (may include three primary colors of red, green, and blue, i.e. RGB, and may also include white, i.e. RGBW) is parallel to the first direction,

Then the first bridging portion 31 is parallel to the second bridging portion 32 and forms a predetermined angle with the first direction. The preset angle can be set as required, as long as the first bridging portion 31 and the second bridging portion 32 are not parallel to the primary color units in the display unit.

Setting the two bridging portions at a preset angle to the x direction can make the two bridging portions not parallel to the primary color unit, thereby improving the bridging shadow effect and reducing the grating interference effect.

As shown in Figure 5, preferably, also include:

The insulating film 4 is respectively arranged between the first bridge portion 31 and the first conductive portion 21, and between the second bridge portion 32 and the second conductive portion 22,

Wherein, the first conductive part 21 is close to one first electrode of the two first electrodes 1 , and the second conductive part 22 is close to the other first electrode of the two first electrodes 1 .

By providing the insulating film 4 , it can be ensured that the first bridge portion 31 is insulated from the first conductive portion 21 , and the second bridge portion 32 is insulated from the second conductive portion 22 .

Preferably, the first conductive portion 21 and the second conductive portion 22 are made of the same material as the two adjacent second electrodes 2 , and are integrally structured with the two adjacent second electrodes 2 .

Preferably, the overlapping portion 23 is made of the same material as that of two adjacent second electrodes 1 .

A plurality of adjacent second electrodes 2 may be directly formed, and the first conductive portion 21, the second conductive portion 22, and the overlapping portion 23 are formed by etching the connecting portion between adjacent second electrodes 2, so as to simplify the structure, Ensure the flatness of the conductive metal layer.

The overlapping portion 23 shown in Fig. 4 and Fig. 5 is a rectangle, which is only an embodiment of the present application. In fact, the shape of the overlapping portion 23 can be set according to needs, as shown in Fig. 6, it can be set to an ellipse , as long as it is ensured that the first bridging portion 31 and the second bridging portion 32 can be overlapped thereon, and that the first bridging portion 31 and the second bridging portion 32 form a preset angle with the x direction.

In addition, although an insulating element is not shown between the first bridge portion 31 and the first conductive portion 21 and between the second bridge portion 32 and the second conductive portion 22 in FIGS. 4 and 6 , in fact The first bridging portion 31 in FIG. 4 and FIG. 6 can be insulated from the first conductive portion 21 as required, and the second bridging portion 32 can be insulated from the second conductive portion 22. The way of insulation includes but not limited to The insulating film 4 is provided between the first bridge portion 31 and the first conductive portion 21 and between the second bridge portion 32 and the second conductive portion 22 .

Preferably, the material of the second electrode 2 and the first electrode 1 is indium tin oxide or indium zinc oxide.

The present invention also proposes a display device, including the touch display screen described in any one of the above.

It should be noted that the display device in this embodiment can be any product or component with a display function, such as electronic paper, mobile phone, tablet computer, television, notebook computer, digital photo frame, and navigator.

As shown in Figure 7, the present invention also proposes a method for manufacturing a touch display screen, including:

S1, forming a conductive metal layer on one side of the substrate;

S2, etching the conductive metal layer to form a plurality of first electrodes 1 arranged along the first direction and a plurality of second electrodes 2 arranged along the second direction in the conductive metal layer, the first direction and the second direction are perpendicular , two adjacent second electrodes 2 are connected through a connecting part;

S3, etching the connection part, so that the connection part forms a first conductive part 21 and a second conductive part 22 connected to two adjacent second electrodes 2, and a connection between the two conductive parts and the second electrode 2. The overlapping portion 23 insulated from the first conductive portion 21 and the second conductive portion 22;

S4, forming a first bridging portion 31 and a second bridging portion 32 between two adjacent first electrodes 1, so that the first bridging portion 31 overlaps with one of the two first electrodes 1 The second bridge portion 32 is electrically connected to the other first electrode of the two first electrodes 1 and the overlapping portion 23 .

Preferably, it also includes:

A display unit is formed on the other side of the substrate, and the primary color units in the display unit are parallel to the first direction,

Then forming the first bridging portion 31 and the second bridging portion 32 includes:

The first bridging portion 31 is parallel to the second bridging portion 32 and forms a predetermined angle with the first direction.

Preferably, before forming the first bridging portion 31 and the second bridging portion 32, further include:

An insulating film 4 is formed between the first bridge portion 31 and the first conductive portion 21, and an insulating film is formed between the second bridge portion 32 and the second conductive portion 22,

Wherein, the first conductive part 31 is close to one of the two first electrodes 1 , and the second conductive part 32 is close to the other first electrode of the two first electrodes 1 .

The technical solution of the present invention has been described in detail above with reference to the accompanying drawings. Considering that in the prior art, it is difficult to realize the bridging structure so as to improve the display effect without affecting the touch effect. Through the technical solution of the present invention, the facing areas of the first bridge part and the second bridge part and the two conductive parts and the overlapping parts are reduced, thereby reducing the coupling capacitance between the bridge part and the second electrode. Moreover, setting the two bridging portions at a preset angle with the first direction can make the two bridging portions not parallel to the primary color unit, thereby improving the bridging shadow effect and reducing the grating interference effect.

In the present invention, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance. The term "plurality" means two or more, unless otherwise clearly defined.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A touch display screen, characterized in that, comprising: base, a conductive metal layer disposed on one side of the substrate, The conductive metal layer includes: a plurality of first electrodes arranged along a first direction, a plurality of second electrodes arranged along a second direction, the first direction is perpendicular to the second direction, Wherein, the adjacent two second electrodes are connected through the first conductive part and the second conductive part, and the second electrode and the first conductive part and the second conductive part are arranged between the two conductive parts. Partially insulated lap joints, The conductive metal layer also includes: A first bridging portion and a second bridging portion disposed between two adjacent first electrodes, the first bridging portion is electrically connected to one of the two first electrodes and the overlapping portion connected, the second bridging portion is electrically connected to the other first electrode of the two first electrodes and the overlapping portion; The first bridging portion is insulated from the first conductive portion, and the second bridging portion is insulated from the second conductive portion. 2. The touch display screen according to claim 1, further comprising: a display unit disposed on the other side of the substrate, the primary color units in the display unit are parallel to the first direction, Then the first bridging portion is parallel to the second bridging portion and forms a preset angle with the first direction, and the preset angle ranges from 0° to 90°. 3. The touch display screen according to claim 1, further comprising: an insulating film disposed between the first bridge portion and the first conductive portion, and between the second bridge portion and the second conductive portion, respectively, Wherein, the first conductive part is close to one first electrode of the two first electrodes, and the second conductive part is close to the other first electrode of the two first electrodes. 4. The touch display screen according to claim 1, wherein the material of the first conductive part and the second conductive part is the same as that of the two adjacent second electrodes, and is the same as that of the corresponding second electrodes. The two adjacent second electrodes have an integral structure. 5 . The touch display screen according to claim 4 , wherein the overlapping portion is made of the same material as that of the two adjacent second electrodes. 6. The touch display screen according to claim 5, wherein the material of the second electrode and the first electrode is indium tin oxide or indium zinc oxide. 7. A display device, comprising the touch display screen according to any one of claims 1 to 6. 8. A method for manufacturing a touch display, comprising: forming a conductive metal layer on one side of the substrate; Etching the conductive metal layer to form a plurality of first electrodes arranged along a first direction, a plurality of second electrodes arranged along a second direction in the conductive metal layer, the first direction and the The second direction is vertical, and two adjacent second electrodes are connected through the connecting part; Etching the connecting portion, so that the connecting portion forms a first conductive portion and a second conductive portion connected to the two adjacent second electrodes, and a connection between the two conductive portions and The second electrode is insulated from the first conductive part and the second conductive part; A first bridging portion and a second bridging portion are formed between two adjacent first electrodes, so that the first bridging portion is connected to one of the two first electrodes and the overlapping portion being electrically connected, the second bridging portion is electrically connected to the other first electrode of the two first electrodes and the overlapping portion; An insulating film is formed between the first bridge portion and the first conductive portion, and an insulating film is formed between the second bridge portion and the second conductive portion. 9. The manufacturing method of the touch display screen according to claim 8, further comprising: A display unit is formed on the other side of the substrate, the primary color units in the display unit are parallel to the first direction, Then forming the first bridging portion and the second bridging portion includes: The first bridging portion is parallel to the second bridging portion and forms a preset angle with the first direction, and the preset angle ranges from 0° to 90°. 10. The manufacturing method of the touch display screen according to claim 8, further comprising: before forming the first bridging portion and the second bridging portion: forming an insulating film between the first bridge portion and the first conductive portion, and forming an insulating film disposed between the second bridge portion and the second conductive portion, Wherein, the first conductive part is close to one first electrode of the two first electrodes, and the second conductive part is close to the other first electrode of the two first electrodes.