TWI455080B - Structure of touch panel - Google Patents

Description

Touch display structure

The invention relates to a touch panel structure for improving the metal bridge cover pixel of the bridge type touch panel and the use of the metal wire as the conductive auxiliary line in the touch panel sensing structure to cause a problem of covering pixels.

The bridge type touch panel often uses a metal material as an electrical connection line between the sensing pads. Since the metal does not have translucency, the electrical connection line of the metal material easily blocks the display pixels and causes no on the screen. Beautiful.

In addition, since the touch panel uses a transparent conductive material as the touch sensing line, as the size of the touch display increases, the resistance value of the touch sensing line rises sharply, and the RC-delay condition will follow the resistance value. The increase is getting worse. Therefore, the "touch panel structure" of the inventor's application number 099124515, which was filed on July 26, 1999, uses metal conductive auxiliary wires as the conductivity of the touch sensing circuit to improve the large-sized touch panel. RC-delay. Since the conductive auxiliary wire is made of a metal material, the electrical connection wire of the metal material easily blocks the display pixels and causes an unsightly appearance on the screen.

The object of the present invention is to provide a touch panel structure for improving the metal bridge bridging problem of the bridge type touch panel and the bright line or bright spot caused by using the metal wire as the conductive auxiliary line in the touch panel sensing structure. .

To achieve the above objective, the structure of the touch display of the present invention comprises: a display panel having a plurality of black matrix regions; and a touch panel disposed on the display panel, the touch panel having a plurality of sensing series and a plurality of conductive auxiliary lines Each of the sensing series extends continuously in one direction, the plurality of conductive auxiliary lines are stacked on the surface of the complex sensing series, and the plurality of conductive auxiliary lines are located above the complex black matrix area.

In order to achieve the above object, the structure of the touch display of the present invention, wherein each sensing series comprises a plurality of sensing pads and a plurality of connecting lines, the plurality of sensing pads are arranged in an array, and the plurality of connecting lines are electrically connected in the direction Complex sensing pads.

To achieve the above object, the touch display device of the present invention has a structure in which a plurality of conductive auxiliary lines are stacked on the surface of the plurality of connecting lines.

To achieve the above object, the touch display device of the present invention has a structure in which a plurality of conductive auxiliary lines are stacked on the surface of the plurality of connection lines and the plurality of sensing pads.

To achieve the above object, the touch display device of the present invention has a structure in which the line width of the conductive auxiliary line is between 1 μm and 30 μm.

To achieve the above object, the touch display device of the present invention has a structure in which a plurality of black matrix regions have a line width of between 1 μm and 100 μm.

In order to achieve the above object, the structure of the touch display of the present invention, wherein the material of the plurality of conductive auxiliary lines may be a conductive metal.

In order to achieve the above object, the structure of the touch display of the present invention further includes an anti-reflection layer disposed on the plurality of conductive auxiliary lines.

In order to achieve the above object, the structure of the touch display of the present invention, wherein the anti-reflection layer is made of a dark conductive material.

In order to achieve the above object, the structure of the touch display of the present invention, wherein the anti-reflection layer is made of an insulating material.

Please refer to FIG. 1a and FIG. 1b for a touch display structure according to an embodiment of the present invention. The touch display structure includes a display panel 100 having a plurality of black matrix regions 110 and a plurality of pixel regions 120, wherein the plurality of black matrix regions 110 separate the pixel regions 120, and the plurality of black matrix regions 110 are commonly used for displays. The purpose of shading is to reduce the possibility of light leakage between pixels. The arrangement of the plurality of pixel regions 120 may be a mosaic type, a triangular arrangement type, or the like. The touch panel 130 is located above the display panel 100. As shown in FIG. 1c and FIG. 1d, the touch panel 130 has a plurality of sensing series 140 in the D1 direction, a complex sensing series 141 in the D2 direction, and a plurality of conductive auxiliary lines 150, wherein each sensing The series 140 continuously extends in the direction D1, each of the sensing series 141 continuously extends in the direction D2, and the complex sensing series 140 and the complex sensing series 141 are interleaved. The materials of the complex sensing series 140 and 141 are transparent conductive materials, such as indium tin oxide, indium oxide, zinc oxide, indium zinc oxide, zinc oxide doped with aluminum, tin oxide doped with antimony or mixture. The plurality of conductive auxiliary lines 150 are stacked on the surfaces of the complex sensing series 140 and the complex sensing series 141, respectively, for improving the electrical conductivity of the complex sensing series 140 and the complex sensing series 141. The plurality of conductive auxiliary wires 150 may be made of a conductive metal such as gold, silver, aluminum, copper, molybdenum, or a conductive alloy such as a copper alloy or an aluminum alloy. The plurality of conductive auxiliary wires 150 may also be composed of the above metal multilayer laminate, such as molybdenum/ Aluminum/molybdenum laminate. The plurality of conductive auxiliary lines 150 can improve the conductivity of the complex sensing series 140 and 141 and reduce the delay of the electrical signals. The plurality of conductive auxiliary lines 150 further have an anti-reflection layer thereon for reducing the reflection of the plurality of conductive auxiliary lines 150. The anti-reflection layer may be made of a dark conductive material such as ITO, TiN, TiAlCN, TiAlN, NbO, NbN. , Nb ₂ O _x , TiC, SiC or WC. It may also be an insulating material, for example, CuO, CoO, WO ₃ , MoO ₃ , CrO, CrON, Nb ₂ O ₅ . A plurality of conductive auxiliary lines 150 are located above the plurality of black matrix regions 110. Since the line width of the plurality of black matrix regions 110 is between 1 μm and 100 μm, and the line width of the plurality of conductive auxiliary lines 150 is less than or equal to the line width of the plurality of black matrix regions 110, the plurality of conductive auxiliary lines 150 may be between 1 μm and 30 μm. Therefore, when the plurality of conductive auxiliary lines 150 are disposed on the plurality of black matrix regions 110, the plurality of conductive auxiliary lines 150 will not block the display of the display pixels, and visually have a better effect.

As shown in FIG. 1e and FIG. 1f, the complex sensing series 140 has a plurality of sensing pads 1401 and a plurality of connecting lines 1402. The plurality of sensing pads 1401 are arranged in an array, and the plurality of connecting lines 1402 are electrically connected in the direction D1. The plurality of sensing pads 1401 are connected. The complex sensing series 141 has a plurality of sensing pads 1411 and a plurality of connecting lines 1412. The plurality of sensing pads 1411 are arranged in an array manner, and the plurality of connecting lines 1412 are electrically connected to the plurality of sensing pads 1411 in the direction D2. The plurality of sensing pads 1401 and 1411 are arranged in an array and interlaced with each other, and the plurality of connecting lines 1402 and 1412 are electrically connected to the plurality of sensing pads 1401 and 1411 in directions D1 and D2, respectively. The shape sensing pads 1401 and 1411 may be in the shape of a hexagon, a strip, a triangle, a diamond, a snowflake or the like, and the specific shape and size may be selected according to a control IC. The plurality of conductive auxiliary lines 150 are stacked on the surfaces of the complex sensing series 140 and the complex sensing series 141, respectively, for improving the electrical conductivity of the complex sensing series 140 and the complex sensing series 141. The plurality of conductive auxiliary lines 150 may be stacked on the plurality of sensing pads 1401 and 1411, respectively, or stacked on the plurality of connecting lines 1402 and 1412, respectively, and may be stacked on the plurality of connecting lines 1402 and 1412 and a portion. Above the plurality of sensing pads 1401 and 1411. A plurality of conductive auxiliary lines 150 are located above the plurality of black matrix regions 110. Since the line width of the plurality of black matrix regions 110 is between 1 μm and 100 μm, and the line width of the plurality of conductive auxiliary lines 150 is less than or equal to the line width of the plurality of black matrix regions 110, the plurality of conductive auxiliary lines 150 may be between 1 μm and 30 μm. Therefore, when the plurality of conductive auxiliary lines 150 are disposed on the plurality of black matrix regions 110, the plurality of conductive auxiliary lines 150 will not block the display of the display pixels, and visually have a better effect.

Although the present invention has been disclosed above by way of example, it is not intended to limit the invention. The scope of the present invention is defined by the scope of the claims, and the scope of the invention is intended to be limited by the scope of the invention.

D1, D2. . . direction

100. . . Display panel

110. . . Complex black matrix area

120. . . Complex pixel area

130. . . Touch panel

140, 141. . . Number sensing series

1401, 1411. . . Complex sensing pad

1402, 1412. . . Multiple cable

150. . . Complex conductive auxiliary line

FIG. 1a is a cross-sectional view of a touch panel according to an embodiment of the present invention.

FIG. 1b is a top view of a touch panel according to an embodiment of the present invention;

1c to 1f are top views of a touch panel according to an embodiment of the present invention;

100. . . Display panel

110. . . Complex black matrix area

120. . . Complex pixel area

130. . . Touch panel

140. . . Complex sensing series

150. . . Complex conductive auxiliary line

Claims (10)

A touch display structure includes: a display panel having a plurality of black matrix regions and a plurality of pixel regions, wherein the black matrix regions separate the pixel regions; and a touch panel is disposed on the display panel, The touch panel has a plurality of sensing series and a plurality of conductive auxiliary lines, wherein each of the sensing series continuously extends in a direction, the conductive auxiliary lines are stacked on the surface of the sensing series, and the conductive auxiliary The lines are located above the black matrix regions, and the line widths of the conductive auxiliary lines are less than or equal to the line widths of the black matrix regions. The structure of the touch display of claim 1, wherein each sensing series comprises a plurality of sensing pads and a plurality of connecting lines, wherein the sensing pads are arranged in an array, and the connecting wires are electrically connected in the direction Connect the sensing pads. The structure of the touch display of claim 2, wherein the conductive auxiliary lines are stacked on the surface of the connecting lines. The structure of the touch display of claim 2, wherein the conductive auxiliary lines are stacked on the surface of the connecting lines and the sensing pads. The structure of the touch display of claim 1, wherein the conductive auxiliary line has a line width of between 1 μm and 30 μm. The structure of the touch display of claim 1, wherein the black matrix regions have a line width of between 1 μm and 100 μm. The structure of the touch display of claim 1, wherein the conductive auxiliary wires are made of a conductive metal. For example, the structure of the touch display of claim 1 of the patent scope includes an anti-reverse The shot layer is disposed on the conductive auxiliary lines. The structure of the touch display device of claim 8, wherein the anti-reflection layer is made of a dark conductive material. The structure of the touch display device of claim 8, wherein the anti-reflection layer is made of an insulating material.