CN201622556U - Structure improvement of capacitance type touch control panel - Google Patents

Abstract

The utility model discloses capacitive touch panel's structural improvement, capacitive touch panel includes a base plate, one shields the layer, one fills flat layer and a touch-control response structure, this base plate is equipped with sensing area and surrounds the non-sensing area outside sensing area, this shielding layer is formed at one of them surface of the non-sensing area of this base plate, and should fill flat layer and extend to by the side that should shield the layer and cover in shielding layer upper surface, should fill flat layer surface formation coplanar, this touch-control response structure is formed on this filling flat layer and includes a plurality of signal lines at least, these signal lines are used for transmitting a touch-control signal, these signal lines overlap with this shielding layer, should shield the layer and be used for shielding the signal line.

Description

Structural improvement of capacitive touch panel

technical field

The utility model relates to a structural improvement of a capacitive touch panel, and in particular to a capacitive touch panel with a shielding layer as a shielding signal line.

Background technique

A traditional capacitive touch panel at least includes a substrate, several sensing lines, several signal lines and a black matrix. Each sensing line includes several connecting lines and several sensing units, and one of the connecting lines electrically connects two adjacent sensing units. The signal line is electrically connected to the sensing line and extends to the edge of the substrate. The black matrix is used as a shielding layer, which is formed on the substrate corresponding to the positions of the signal lines, so as to shield the signal lines located at the edge of the substrate and prevent the signal lines from being exposed.

However, the general method is to form a black matrix at the edge of one of the surfaces of the substrate first, and then form a plurality of sensing lines and a plurality of signal lines on the surface, especially a plurality of signal lines extending to overlap with the black matrix, and each signal line masking.

Due to the height difference generated by the black matrix when several signal lines are installed, each signal line must be installed in a climbing manner. The difference in height will easily cause the signal line to break when climbing, so that the signal cannot be transmitted reliably. become defective.

Utility model content

The technical problem to be solved by the utility model is to provide a structural improvement of a capacitive touch panel, which can form the touch sensing structure on a plane with the same thickness to ensure signal transmission.

The technical solution of the utility model is: a structural improvement of a capacitive touch panel, including: a substrate, the substrate is provided with a sensing area and a non-sensing area surrounding the sensing area; a shielding layer is formed on the One surface of the non-sensing area of the substrate; a leveling layer, the leveling layer extends from the side of the shielding layer to cover the upper surface of the shielding layer, the surface of the filling layer forms the same plane; and a touch sensing structure , formed on the leveling layer and at least including a plurality of signal lines, the signal lines are used to transmit a touch signal, and the signal lines overlap with the shielding layer.

Wherein, the shielding layer surrounds the touch sensing structure.

The touch sensing structure further includes a plurality of sensing units for sensing the touch signal.

The substrate has a substrate surface, the touch sensing structure and the shielding layer are formed on the substrate surface, one end of each of the signal lines is electrically connected to the corresponding sensing unit, and the other end of each of the signal lines extends to be connected to the sensing unit. Masking layers overlap.

The touch sensing structure includes: a sensing layer with a plurality of first sensing units and second sensing units, each first sensing unit is formed in the substrate sensing area along a first direction, and each second sensing unit is formed along a first direction A second direction is formed in the sensing area of the substrate; a plurality of first connection lines, each first connection line is set in the sensing area, and electrically connects two adjacent two of the first sensing units; a first connection line An insulating layer, the first insulating layer covers a part of each of the first connecting lines; a plurality of second connecting lines, each of the second connecting lines is arranged in the sensing area, and one of the second connecting lines spans through the first insulating layer and electrically connect adjacent two of the second sensing units.

A second insulating layer is provided, and the second insulating layer covers the touch sensing structure and the shielding layer.

The shielding layer is made of metal or conductive material.

The shielding layer is made of resin.

The beneficial effects of the utility model are: since the shielding layer surrounds the edge of the entire substrate, when electromagnetic interference invades the capacitive touch panel, the shielding layer can play a protective role in the largest range; and the surface of the substrate can be protected by the filler The leveling effect of the leveling layer forms a plane with the same thickness, and then forms a touch sensing structure, which can reduce the problem of disconnection caused by height differences, ensure signal transmission, and improve the yield of the touch panel.

Description of drawings

FIG. 1 shows a schematic diagram of a capacitive touch panel according to a preferred embodiment of the present invention;

Fig. 2 illustrates the sectional view of direction 2-2' in Fig. 1;

Fig. 3 depicts the sectional view of direction 3-3' in Fig. 1;

Fig. 4 depicts a schematic plan view of a capacitive touch panel provided with a shielding layer in the present invention;

Fig. 5 depicts a schematic plan view of a capacitive touch panel with a leveling layer in the present invention;

6A and B are schematic plan views of a capacitive touch panel provided with a sensing layer in the present invention;

FIG. 7 shows a schematic plan view of a plurality of first connecting lines arranged on the capacitive touch panel of the present invention;

8 is a schematic plan view of a capacitive touch panel provided with a first insulating layer in the present invention.

【Description of figure number】

Capacitive touch panel 1 Substrate 11

Sensing area 11a Non-sensing area 11b

Induction layer 12 The first induction unit 121

The second induction unit 122 The first connection line 131

Shading layer 132 side 132a

Upper surface 132b First insulating layer 14

Second connection line 151 Signal line 152

fill layer 17

Detailed ways

Please refer to FIG. 1, FIG. 2 and FIG. 3. FIG. 1 shows a schematic diagram of a capacitive touch panel according to a preferred embodiment of the present invention. FIG. 2 shows a cross-sectional view of the direction 2-2' in FIG. A sectional view along direction 3-3' in Fig. 1 is shown.

As shown in FIG. 1 , a capacitive touch panel 1 includes a substrate 11 and a touch sensing structure. The substrate 11 is a transparent substrate and has a sensing area 11a and a non-sensing area 11b surrounding the sensing area 11a. The masking layer 132 is formed on one surface of the non-sensing region 11b of the substrate, and the leveling layer 17 extends from the side 132a of the masking layer 132 to cover the upper surface 132b of the masking layer, and the surface of the filling layer 17 forms the same Plane, the touch sensing structure is formed on the leveling layer 17 and at least includes a plurality of signal lines 152, these signal lines 152 are used to transmit a touch signal, these signal lines 152 overlap with the shielding layer 132, and The color of the shielding layer 132 is dark, such as black. Alternatively, the color of the shielding layer 132 is similar to that of the signal line 152 . Therefore, the shielding layer 132 can be used to shield the signal lines extending to the edge of the substrate, preventing the signal lines 152 from being exposed in appearance. Furthermore, the shielding layer 132 can replace the black matrix or other materials with light-shielding effect to shield the signal lines extending to the edge of the substrate, and the touch sensing structure can be formed on a plane with the same thickness to ensure signal transmission.

The touch sensing structure includes a sensing layer 12, a plurality of first connecting wires 131, a first insulating layer 14 and a plurality of second connecting wires 151, wherein the formation sequence of each layer is shown in FIGS. 4 to 8; The shielding layer 132 is formed on the surface of the substrate 11 , and the shielding layer 132 is formed on the peripheral portion of the substrate 11 and distinguishes the sensing region 11 a and the non-sensing region 11 b of the substrate.

Then, a leveling layer 17 is formed on the surface of the substrate 11 (as shown in FIG. 5 ). The sensing area 11 a of the leveling layer 17 extends to cover the shielding layer 132 . The filling and leveling action forms a plane with the same thickness (refer to Figure 2 and Figure 3 at the same time).

Then form the sensing layer 12 on the surface of the substrate 11. As shown in FIG. In the illustrated embodiment, it can be the X-axis direction or the Y-axis direction) is formed in the substrate sensing region 11a, and each second sensing unit 122 is formed along a second direction (in the embodiment shown in the figure). It can be in the direction of the Y axis or in the direction of the X axis) in the sensing area 11a of the substrate, in which a connecting portion 112a can be integrally formed between each first sensing unit 121; of course, it can also be shown in FIG. 6B, Each first sensing unit 121 is isolated from each other.

Then form a plurality of first connection lines 131 (as shown in FIG. 7 ) on the surface of the substrate 11, and each first connection line 131 is arranged in the sensing area 11a, and is electrically connected to adjacent ones of the first sensing units 121. both.

Next, a first insulating layer 14 is formed as shown in FIG. 8 , and the first insulating layer 14 covers a part of each of the first connection lines 131 .

Finally, a plurality of second connection lines 151 and signal lines 152 (as shown in FIG. 1 ) are formed. The layer 14 is electrically connected to the adjacent two of the second sensing units 122, and the signal line 152 is formed on the first insulating layer 14, and one end of each signal line 152 is electrically connected to the corresponding first and second sensing units. In units 121 and 122, the other end of each signal line 152 extends to the first insulating layer 14 and overlaps with the shielding layer 132; of course, the touch sensing structure and the shielding layer may be further covered with a second insulating layer (not shown). shown) to provide the outermost layer of insulation protection.

During overall implementation, the first sensing unit 121 and the second sensing unit 122 are used to sense a touch signal (not shown) caused by a finger or a stylus. The touch signal is then transmitted to an output cable (not shown) through the signal line 152 , and the output cable is electrically connected to a driving circuit (not shown) to generate a corresponding reaction action.

Since the shielding layer 132 surrounds the entire edge of the substrate 11, when electromagnetic interference attacks the capacitive touch panel 1, the shielding layer 132 can play a protective role in the largest range; and the surface of the substrate 11 can be protected by the leveling layer 17 After the leveling effect forms a plane with the same thickness, the touch sensing structure is formed, which can reduce the disconnection problem caused by the height difference, so as to ensure the transmission of signals and improve the yield of the touch panel.

Claims (8)

1. the structural improvement of a capacitance type touch-control panel is characterized in that, comprising:

One substrate, this substrate are provided with sensing area and the non-sensing area outside sensing area;

One shielding layer, the non-sensing area that is formed at this substrate is a surface wherein;

One fills and leads up layer, and this is filled and led up layer and is extended to by the side of this shielding layer and be covered in the shielding layer upper surface, and this is filled and led up laminar surface and forms same plane; And

One touch-control sensing structure is formed at this and fills and leads up layer and go up and comprise a plurality of signal line at least, and those signal line are in order to transmit a touch-control signal, and those signal line and this shielding layer are overlapping.

2. the structural improvement of capacitance type touch-control panel as claimed in claim 1 is characterized in that, this shielding layer is around this touch-control sensing structure.

3. the structural improvement of capacitance type touch-control panel as claimed in claim 1 is characterized in that, this touch-control sensing structure comprises that more plural number is in order to respond to the sensing unit of this touch-control signal.

4. the structural improvement of capacitance type touch-control panel as claimed in claim 3, it is characterized in that, this substrate has a substrate surface, this touch-control sensing structure and this shielding layer are formed at this substrate surface, one end of each those signal line electrically connects this corresponding sensing unit, and the other end of each those signal line extends to this shielding layer overlapping.

5. the structural improvement of capacitance type touch-control panel as claimed in claim 1 is characterized in that, this touch-control sensing structure comprises:

One inductive layer is provided with plural first sensing unit and second sensing unit, and each first sensing unit is formed in this substrate sensing area along a first direction, and each second sensing unit is formed in this substrate sensing area along a second direction;

Plural number first connecting line, each first connecting line is located in this sensing area, and electrically connect in those first sensing units adjacent the two;

One first insulation course, this first insulation course covers the some of each those first connecting line;

Plural number second connecting line, each second connecting line is located in this sensing area, one of those second connecting lines stride across this first insulation course and electrically connect in those second sensing units adjacent the two.

6. as the structural improvement of claim 1,2,3 or 5 described capacitance type touch-control panels, it is characterized in that, be provided with second insulation course, this second insulation course covers this touch-control sensing structure and shielding layer.

7. as the structural improvement of claim 1,2,3 or 5 described capacitance type touch-control panels, it is characterized in that the material of this shielding layer is metal or conductive material.

8. as the structural improvement of claim 1,2,3 or 5 described capacitance type touch-control panels, it is characterized in that the material of this shielding layer is the resin material.

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