TWI416384B - Mother board of touch panel and touch panel - Google Patents

Abstract

A mother board of a touch panel including a substrate, first protection circuits, a second protection circuit, first sensing series and second sensing series is provided. The substrate has closely connected panel areas. Each of the first protection circuits is disposed inside one panel area and at the periphery of the panel area. The second protection circuit is disposed outside the panel areas to connect the first protection circuits. The first sensing series parallel to each other and the second sensing series parallel to each other are disposed inside the panel areas. A part of the first sensing series and a part of the second sensing series are connected to the first protection circuit inside the adjacent panel area and another part of the first sensing series and another part of the second sensing series are connected to the second protection circuit outside the panel areas.

Description

Motherboard and touch panel of touch panel

The present invention relates to a motherboard and a touch panel of a touch panel, and more particularly to a motherboard and a touch panel of a touch panel having high space utilization efficiency.

Touch Panel In order to improve the process efficiency of the touch panel, multiple touch panels are fabricated on the same substrate, and after each component is completed, it is cut into a plurality of touch panels. Among them, in order to prevent damage to the components caused by electrostatic discharge in the process, an electrostatic discharge protection circuit is disposed on the substrate. These ESD protection lines connect the conductive elements on the touch panel before the substrate is cut. After the substrate is cut, the ESD protection circuit must be separated from the components in the touch panel to maintain the independence of the components. Therefore, in the architectural design, sufficient wiring area must be reserved in the substrate to specifically configure these ESD protection lines. After the substrate is cut, these wiring areas cannot be utilized and become a burden on the manufacturing cost of the touch panel.

The invention provides a mother board of a touch panel with high space utilization.

The invention provides a touch panel with low production cost.

The invention provides a motherboard for a touch panel, which comprises a substrate, a plurality of first protection lines, a second protection line, a plurality of first sensing series and a plurality of second sensing series. The substrate has a plurality of closely spaced panel regions. Each of the first protection lines is disposed in one of the panel areas and located at a periphery of the panel area. The second guard line is disposed on the substrate and outside the panel area to connect the first protection line. The first sensing series is disposed in the panel area, and the first sensing series is parallel to each other. A portion of the first sense series is connected to the first guard line in the adjacent panel area, and another portion of the first sense train is connected to the second guard line outside the panel area. The second sensing series is disposed in the panel area, and the second sensing series is parallel to each other. The extending direction of the first sensing series intersects the extending direction of the second sensing series, wherein a part of the second sensing series is connected to the first protection line in the adjacent panel area, and the other part is second sense The test string is connected to a second guard line outside the panel area.

The present invention further provides a touch panel including a substrate, a plurality of first sensing series, a plurality of second sensing series, a guard line, and a plurality of third connecting lines. The first sensing series is disposed on the substrate, and the first sensing series is parallel to each other. Each of the first sensing series has a first connecting line. The first connecting line extends to the edge of the substrate. The second sensing series is disposed on the substrate, and the second sensing series is parallel to each other. The extending direction of the first sensing series intersects the extending direction of the second sensing series, wherein each of the second sensing series has a second connecting line. The second connection line extends to the edge of the substrate. The guard line is located outside the first sensing series and the second sensing series and is not connected to the first sensing series and the second sensing series. The third connection line extends from the guard line to the edge of the substrate.

Based on the above, in the motherboard and the touch panel of the touch panel of the present invention, the protective wires are disposed in the panel region. Therefore, in the process of cutting the mother board, it is not necessary to cut off the area where the guard wire is located, so that the area utilization of the motherboard is improved. As a result, the manufacturing cost of the touch panel can be further reduced.

The above described features and advantages of the present invention will be more apparent from the following description.

FIG. 1 illustrates a motherboard of a touch panel according to a first embodiment of the present invention. Referring to FIG. 1 , the motherboard 100 includes a substrate 110 , a plurality of first guard lines 120 , a second guard line 130 , a plurality of first sensing series 140 , and a plurality of second sensing series 150 . The substrate 110 has a plurality of closely spaced panel regions 112. In the present embodiment, the substrate 110 is intended to be cut into a plurality of panels along the edge of the panel region 112 (that is, the broken line in FIG. 1). Simultaneous fabrication of multiple panels on the same substrate 110 helps to save process steps and increase process efficiency.

A plurality of first sensing series 140 are disposed in the panel region 112, and the first sensing series 140 are parallel to each other. At the same time, the plurality of second sensing series 150 are disposed in the panel region 112, and the second sensing series 150 are parallel to each other, wherein the extending direction of the first sensing series 140 intersects the second sensing series 150 Extend the direction. In this embodiment, the extending directions of the first sensing series 140 and the second sensing series 150 are, for example, perpendicular to each other. The first sensing series 140 and the second sensing series 150 are respectively composed of a plurality of sensing pads to provide a function of touch sensing. That is to say, each panel area 112 is cut to form a separate touch panel.

Since the distance between the first sensing series 140 and the second sensing series 150 is small, it is easy to have a potential difference between the adjacent first sensing series 140 and the second sensing series 150. Electrostatic discharge occurs. During the manufacturing process of the touch panel, if the first sensing series 140 and the second sensing series 150 are damaged by electrostatic discharge, the touch panel may not operate normally.

Therefore, in the embodiment, the first protection circuit 120 and the second protection circuit 130 are disposed on the substrate 110. The first protection circuit 120 and the second protection circuit 130 can electrically connect all the sensing pads on the substrate 110 to avoid the occurrence of electrostatic discharge. In the present embodiment, each of the first guard lines 120 is, for example, a straight line, and each of the straight lines extends to an edge of the corresponding panel area 112 to be connected to an adjacent straight line. In other words, a plurality of lateral lines disposed on the substrate 110 are utilized as electrostatic discharge protection lines.

In detail, each of the first protection lines 120 is disposed in one of the panel regions 112 and located at a periphery of one of the panel regions 112. The second protection circuit 130 is disposed on the substrate 110 and located outside the panel region 112 to connect the first protection circuit 120. That is, a periphery of each of the panel regions 112 is provided with a first guard line 120, and a second guard line 130 is disposed at the periphery of the substrate 110 to connect the first guard lines 120 together. In this embodiment, the second protection circuit 130 can surround the periphery of the substrate 110, for example, that is, the second protection circuit 130 can be a "mouth" type circuit design. Of course, the invention is not limited thereto.

In addition, a portion of the first sensing series 140 is coupled to the first guard line 120 of the adjacent panel region 112, and another portion of the first sensing series 140 is coupled to the second guard line 130 outside of the panel region 112. . A portion of the second sensing series 150 is coupled to the first guard line 120 in the adjacent panel region 112, and another portion of the second sensing series 150 is coupled to the second guard line 130 outside of the panel region 112.

In this embodiment, each of the first sensing series 140 has a first connecting line 142. The first connection line 142 extends beyond the edge of the corresponding panel area 112. In this way, part of the first sensing series 140 is connected to the first protection line 120 in the adjacent panel area 112, and another part of the first sensing series 140 is connected to the second protection outside the panel area 112. Line 130. Similarly, the second sensing series 150 has a second connection line 152. The second connection line 152 extends beyond the edge of the corresponding panel region 112. Therefore, part of the second sensing series 150 is connected to the first protection line 120 in the adjacent panel area 112, and another part of the second sensing series 150 is connected to the second protection line 130 outside the panel area 112. .

In the case of FIG. 1, the first sensing series 140 and the second sensing series 150 in most of the panel areas 112 are connected to the first protection line 120 in the upper panel area 112. However, in the panel area 112 of the uppermost row in the drawing, the first sensing series 140 and the second sensing series 150 are connected to the second protection line 130 outside the panel area 112. In this way, the first sensing series 140 and the second sensing series 150 are electrically connected to the second protection line 130 through the first protection line 120 to prevent electrostatic discharge damage.

In the present embodiment, the first sensing series 140 and the second sensing series 150 are both connected to the first protection line 120 or the second protection line 130 outside the panel area 112 where they are located. Therefore, after the substrate 110 is cut along each panel region 112, the first sensing series 140 and the second sensing series 150 can be disconnected without being electrically transmitted through the first protection line 120 and the second protection line 130. connection. That is to say, after the motherboard 100 is cut into a plurality of touch panels, the first sensing series 140 and the second sensing series 150 in each touch panel are independent and can operate normally.

In addition, the first protection circuit 120 is disposed in the panel region 112 in this embodiment. Therefore, the position of the first protection circuit 120 is not required to be cut off from the motherboard 100 to make the motherboard 100 have higher utilization. Therefore, in this embodiment, only the configuration position of the second protection line 130 needs to be cut off, thereby saving the manufacturing cost of the touch panel.

When the motherboard 100 is not cut, the connecting lines (142 and 152) of the first sensing series 140 and the second sensing series 150 may extend to the first sensing series 140 and the second sensing series 150. Located outside panel area 112. In this way, the first sensing series 140 and the second sensing series 150 can be protected by the first protection line 120 and the second protection line 130 to avoid electrostatic discharge damage.

However, the connection lines (142 and 152) connected to the first sensing series 140 and the second sensing series 150 are disconnected into separate lines, so the first sensing series 140 and the second sense The series 150 can operate normally. In fact, each panel area 112 will form a separate touch panel when panel area 112 is cut. At this time, the connecting lines (142 and 152) connected to the first sensing series 140 and the second sensing series 150 are used to transmit the signals sensed by the first sensing series 140 and the second sensing series 150. Or transferring the driving chip (not shown) to the first sensing series 140 and the second sensing series 150.

In addition, after the substrate 110 is diced, another portion of the connecting lines (142 and 152) may remain in the other panel region 112 or the periphery of the substrate 110 and on the first guard line 120 or the substrate 110 of the other panel region 112. The second protection line 130 is electrically connected. That is, in the same panel area 112 range, the first guard line 120 is not connected to the first sense train 140 and the second sense train 150, leaving the components with independent characteristics.

2 is a schematic diagram of a motherboard of a touch panel according to a second embodiment of the present invention. Referring to FIG. 2, the design of the motherboard 200 is similar to that of the motherboard 100 described above, and thus the same elements will be denoted by the same reference numerals. In detail, the mother board 200 differs from the mother board 100 in the design of the guard line. In the motherboard 200, each of the first protection lines 220 includes, for example, a ring line, and the second protection line 230 is a straight line. Each of the first guard lines 220 is disposed, for example, at a periphery of each panel region 112 and surrounds the first sensing series 140 and the periphery of the second sensing series 150.

In this embodiment, both ends of the first protection circuit 220 extend outward from the panel area 112 thereof to connect to the first protection line 220 of the upper panel area 112 or the second protection line outside the panel area 112. 230. In addition, the first guard line 220 further includes a plurality of connecting lines 222 to connect the adjacent first guard lines 220 together to provide good electrostatic discharge protection.

When the motherboard 200 is cut into a plurality of touch panels along the edge of the panel region 112, the end of the first shield 220 and the portion of the connecting wire 222 extending to the other touch panel are, for example, cut into a plurality of floating panels. Connection line. That is to say, in each touch panel, the floating connecting line extends from the loop line to the edge of the panel area 112. In this way, the first sensing series 140 and the second sensing series 150 can form separate lines to normally provide a touch sensing function. Further, in the separate panel area 112, the floating connection line which is disconnected by the connection line 222 is located between the floating connection lines which are disconnected by the first protection line 220.

FIG. 3 illustrates a motherboard of a touch panel according to a third embodiment of the present invention. Referring to FIG. 3 , the motherboard 300 is substantially the same as the motherboard 200 . The second guard line 330 of the motherboard 300 is a mouth-shaped design, and the motherboard 300 is not disposed between the adjacent first guard lines 220 . Connection line. That is to say, the present invention does not limit the wiring manner of the first protection circuit and the second protection circuit, wherein the first protection circuit and the second protection circuit can be electrically connected to each other to achieve the effect of electrostatic discharge protection. In addition, the protective circuit proposed by the present invention can be fabricated by using metal or other conductive materials such as metal oxides.

In summary, the present invention configures the first protection circuit inside each panel area of the motherboard, and connects the lines in each panel area to the first protection line in the front panel area to provide complete electrostatic protection. . In addition, when the motherboard is cut into a plurality of touch panels, the first protection circuit is retained in the touch panel to help improve the utilization of the motherboard. At the same time, the various components in the touch panel are electrically independent of each other due to the cutting. Therefore, the touch panel of the present invention can maintain a normal function. Overall, the motherboard of the present invention and its touch panel have high production yield, low production cost, and good product quality.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100, 200, 300. . . motherboard

110. . . Substrate

112. . . Panel area

120, 220. . . First protection line

130, 230, 330. . . Second guard line

140. . . First sensing series

142. . . First connection line

150. . . Second sensing series

152. . . Second connection line

222. . . Cable

FIG. 1 illustrates a motherboard of a touch panel according to a first embodiment of the present invention.

2 is a front view of a touch panel of a second embodiment of the present invention.

FIG. 3 illustrates a motherboard of a touch panel according to a third embodiment of the present invention.

100. . . motherboard

110. . . Substrate

112. . . Panel area

120. . . First protection line

130. . . Second guard line

140. . . First sensing series

142. . . First connection line

150. . . Second sensing series

152. . . Second connection line

Claims (14)

A motherboard for a touch panel includes: a substrate having a plurality of closely connected panel regions; and a plurality of first shielding circuits, each of the first shielding lines being disposed in one of the panel regions and located in the one panel region a second protection circuit disposed on the substrate and located outside the panel areas to connect the first protection lines; a plurality of first sensing series disposed in the panel areas, the first A sensing series is parallel to each other, and a portion of the first sensing series is connected to the first protection line in an adjacent panel area, and another portion of the first sensing series is connected to the plurality of panels The second protection line outside the area; and a plurality of second sensing series disposed in the panel areas, the second sensing series being parallel to each other, and the extension of the first sensing series The direction intersects the extending direction of the second sensing series, wherein some of the second sensing series are connected to the first protection line in the adjacent panel area, and the other part is the second sensing The series is connected to the second guard line outside the panel areas. The motherboard of the touch panel of claim 1, wherein each of the first sensing series has a first connecting line extending beyond the edge of the corresponding panel area to make some of the portions The first sensing series is connected to the first protection line in the adjacent panel area, and the other part of the first sensing series is connected to the second protection line outside the panel areas. The motherboard of the touch panel of claim 1, wherein the first sensing series are not connected to the first protection line in the same panel area. In the motherboard of the touch panel of claim 1, each of the second sensing series has a second connecting line extending beyond the edge of the corresponding panel area to make the part The second sensing series is connected to the first protection line in the adjacent panel area, and the other part of the second sensing series is connected to the second protection line outside the panel areas. The motherboard of the touch panel of claim 1, wherein the second sensing series are not connected to the first protection line in the same panel area. The motherboard of the touch panel of claim 1, wherein the second protection circuit is located at the periphery of the substrate. The motherboard of the touch panel of claim 1, wherein each of the first guard lines is substantially a straight line, and each of the straight lines extends to an edge of the corresponding panel area to be adjacent to the straight line. connection. The motherboard of the touch panel of claim 1, wherein each of the first protection lines comprises an annular line surrounding a periphery of one of the panel regions, and both ends of the annular line extend to The corresponding panel area is connected to the adjacent first protection line or the second protection line. The motherboard of the touch panel of claim 8, wherein each of the first protection lines further comprises a plurality of connecting lines connected between adjacent ones of the circular lines. A touch panel includes: a substrate; a plurality of first sensing series disposed on the substrate, wherein the first sensing series are parallel to each other, wherein each of the first sensing series has a first a connecting line extending to an edge of the substrate; a plurality of second sensing series disposed on the substrate, the second sensing series being parallel to each other, and extending directions of the first sensing series intersecting An extending direction of the second sensing series, wherein each of the second sensing series has a second connecting line extending to an edge of the substrate; a guard line located in the first sensing series and the Except for the second sensing series, and not connected to the first sensing series and the second sensing series; and a plurality of third connecting lines extending from the protection line to the edge of the substrate . The touch panel of claim 10, wherein the protection circuit is substantially a straight line and extends from one edge of the substrate to the opposite edge. The touch panel of claim 10, wherein each of the protection lines comprises a loop line surrounding the periphery of the substrate. The touch panel of claim 12, wherein both ends of the loop line extend to an edge of the substrate. The touch panel of claim 12, wherein the protection circuit further comprises at least two fourth connecting lines extending from the annular line to an edge of the substrate, and the third connecting lines are located at two of the two Between the fourth connection lines.