TWM486811U - Sensing layer circuit structure - Google Patents

Description

Sensing layer circuit structure

The present invention is a sensing layer circuit structure, in particular, a deformation structure applied to the edge of a sensing layer circuit of a touch panel.

According to the current touch panel input mode, including resistive, capacitive, optical, electromagnetic induction, sonic induction, etc.; Touching the surface of the panel with a finger or a sensor pen, and generating a change in voltage and current inside the panel subjected to the touched position, thereby detecting the position at which the panel surface is touched to achieve the purpose of touch input.

Moreover, in order to detect the position of the user touching the touchpad with a finger or a sensor pen, the manufacturer has developed various capacitive touch sensing technologies. For example, a structure of a capacitive capacitive touch circuit pattern includes two sets of capacitive sensing layers separated by an intermediate insulating layer to form a capacitive effect, and each capacitive sensing layer includes substantially parallel arranged conductive elements. The two capacitive sensing layers are substantially perpendicular to each other, and each of the conductive elements comprises a diamond-shaped electrode block in a sequence, which is made of a transparent conductive material (such as Indium Tin Oxide, ITO), and the electrode blocks are formed. Connected by narrow wires, the conductive elements on each capacitive sensing layer are electrically connected to the peripheral lines, and the control circuit provides signals to the two sets of conductive elements through the peripheral lines, when the surface is touched. The touch signals generated by the electrode blocks are received to determine the touch position at each layer.

The present invention provides a sensing layer circuit structure including a substrate and a plurality of a first electrode block and a plurality of second electrode wires. The second electrode lead includes a plurality of pairs of sub-wires. The first electrode block is formed on the substrate in a first axial direction of the substrate, and has a gap between any two first electrode blocks. The second electrode lead is disposed on the substrate across the slit in a second axial direction of the substrate, and the first interval between any two second electrode leads. Each pair of sub-wires extends and is symmetrically disposed on both sides of the second electrode lead.

The present invention provides another sensing layer circuit structure including a substrate, a plurality of first electrode blocks, and a plurality of second electrode wires. The second electrode lead includes a plurality of pairs of sub-wires. The first electrode block is formed on the substrate in a first axial direction of the substrate, and has a gap between any two first electrode blocks. The second electrode lead is disposed on the substrate across the slit in a second axial direction of the substrate, and the first interval between any two second electrode leads. Each pair of sub-wires extends and is symmetrically disposed on both sides of the second electrode lead. Among the two outermost two electrode wires on the outermost substrate, the ends of the sub-wires near the outer side of the substrate have a deformed structure.

In summary, the circuit structure of the sensing layer proposed in the present embodiment can solve the defect that the edge of the sensing layer of the general capacitive touch panel cannot be accurately determined. More specifically, the edge of the capacitive touch panel is degraded due to the edge effect of the sensing layer, which causes the touch linearity of the sensing amount to be degraded when touched, resulting in a general touch panel at about half of the edge. The range of channels cannot determine the touch point. Therefore, the sensing layer circuit structure of the present embodiment effectively improves the sensing amount of the edge of the sensing layer, compensates for the problem of the touch linearity degradation caused by the edge effect of the sensing layer, and further increases the overall usable area of the touch panel.

In order to further understand the features and technical contents of this creation, please refer to the following detailed description and drawings of this creation, but these descriptions and drawings are only used to illustrate this creation, not the right to this creation. The scope is subject to any restrictions.

1‧‧‧ touch device

11‧‧‧Sense layer

12‧‧‧ Display screen

20‧‧‧Substrate

TX1~TX4‧‧‧ transmission wire

RX1~RX3‧‧‧Sensing wire

TX5~TX7‧‧‧ first electrode block

RX4~RX7‧‧‧Second electrode lead

21‧‧‧Subwire

22‧‧‧cross line

23‧‧‧ gap

211‧‧‧ deformation structure

PX, PY, gap, a~c, sq, sw, st, su‧‧‧ distance

S1~S9‧‧‧ touch judgment area

A‧‧‧ touch point

X‧‧‧first axial

Y‧‧‧second axial

1 is a schematic diagram of a conventional touch panel sensing layer circuit; FIG. 2 is a schematic structural diagram of a sensing layer circuit according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of another sensing layer circuit according to an embodiment of the present invention; FIG. 4 is a schematic diagram of the sensing layer circuit being touched and judged in the present embodiment.

Various illustrative embodiments are described more fully hereinafter with reference to the accompanying drawings. However, the inventive concept may be embodied in many different forms and should not be construed as being limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this description will be thorough and complete, and the scope of the inventive concept will be fully conveyed to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Similar numbers always indicate similar components.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, such elements are not limited by the terms. These terms are used to distinguish one element from another. Thus, a first element discussed below could be termed a second element without departing from the teachings of the inventive concept. As used herein, the term "or" may include all combinations of any one or more of the associated listed items.

Please refer to FIG. 1 , which is a schematic diagram of a conventional touch panel sensing layer circuit. The position of the sensing layer 11 of the display screen 12 of the general touch device 1 is shown in FIG. More specifically, the sensing layer 11 is disposed below the display screen 12. However, as is clear from Fig. 1, the range of the display screen 12 is smaller than the range of the sensing layer 11. In other words, the range in which the display screen 12 is available does not include the edge area of the sensing layer 11.

The sensing layer 11 has transmission lines TX1~TX4 and sensing lines RX1~RX3. Those skilled in the art should understand the operation modes of the transmission wires TX1~TX4 and the sensing wires RX1~RX3 of the touch panel 11 and will not be described here. It is worth noting that the capacitive sensing layer 11 is conventionally disposed in a single layer or a double layer, because it is mainly used to determine the calculation method of the touch point (for example, nine judgments) The variation of the sensing amount in the broken region is calculated. The edge of the sensing layer 11 cannot be accurately calculated, and the misjudgment occurs. Therefore, in order to reduce the edge linearity error within a certain condition, the touch area that can be utilized is reduced to the dotted line range of the sensing layer 11 in FIG. 1, and the space outside the dotted line is usually used by the manufacturer. The case is covered so that it is not touched by the user. In order to effectively utilize the area available for the lift sensing layer 11 (and even if the display screen 12 can be expanded to the extent of the sensing layer 11), the present creative embodiment proposes a new circuit architecture.

Please refer to FIG. 2. FIG. 2 is a schematic structural diagram of a sensing layer circuit according to an embodiment of the present invention. The sensing layer includes a substrate 20, a plurality of first electrode blocks TX5~TX7, and second electrode wires RX4~RX7. Each of the second electrode wires RX4 to RX7 includes a plurality of pairs of sub-wires 21. The first electrode blocks TX5-TX7 are formed on the substrate 20 in a first axial direction x of the substrate, and a gap 23 is formed between any two first electrode blocks TX5-TX7, wherein the gap 23 is between 30 and 50 microns. between. As shown in FIG. 2, the gap 23 between the first electrode block TX5 and the first electrode block TX6 separates the first electrode block TX5 from the first electrode block TX6. The second electrode wires RX4 to RX7 are disposed on the substrate 20 across the slit 23 in the second axial direction y of the substrate 20, and have a distance sq between any two of the second electrode wires RX4 to RX7. More specifically, the distance sq is the distance between the ends of the two sub-wires 21 on the adjacent sides of the adjacent two second electrode wires RX4 to RX7. In the present embodiment, each pair of sub-wires 21 extends and is symmetrically disposed on both sides of each of the second electrode wires RX4 to RX7, and the distance between adjacent pairs of sub-wires 21 is equal. It should be noted that the sub-wires of the present embodiment are disposed on the second electrode wires RX4 to RX7 in a vertical manner. However, in practice, the direction of extension can be adjusted according to the needs of the manufacturer, and only needs to be set in a symmetrical manner. This creation is only for the purpose of illustration and is not intended to be limiting.

In addition, in each of the first electrode blocks TX5 to TX7, at least one of the jumpers 22 is disposed to electrically connect each of the first electrode blocks TX5 to TX7 separated by the second electrode wires RX4 to RX7.

Next, please refer to FIG. 2 and FIG. 3 together, FIG. 3 is another sense of the creative embodiment. Schematic diagram of the layer circuit structure. The circuit structure of the sensing layer of FIG. 3 is substantially the same as that of FIG. 2, and details are not described herein again, and the details will be described in detail later.

In the present embodiment, in the two outermost two electrode wires on the substrate 20 (such as the second electrode wire RX4 and the second electrode wire RX7 of FIG. 2), the end of the sub-wire 21 near the outer side of the substrate 20 has a deformed structure. 211. More specifically, the outermost two second electrode wires, the ends of all the sub-wires 21 adjacent to the outside of the substrate 20 have a deformed structure 211 (Fig. 3 shows only the left half, and the right half also has the same structure).

In the present embodiment, the deformed structure 211 has a rectangular shape as an embodiment, and the long side of the rectangle is connected to the end of the sub-wire 21. Further, the long sides of the deformed structure 211 are disposed in the direction of the second axial direction y of the substrate 20. Through the deformation structure 211, the sensing layer circuit structure of the present embodiment can effectively improve the sensing amount of the edge of the sensing layer, compensate the problem of the touch linearity degradation caused by the edge effect of the sensing layer, and improve the edge touch recognition capability.

Next, a detailed implementation of the circuit structure of the sensing layer of the present creative embodiment will be further described. In the present embodiment, each of the second electrode wires RX4 RX7 intersects with each of the first electrode blocks TX4 to TX7 to form a plurality of touch determination regions (such as region S9 shown in FIG. 3), and each touch determination is performed. The area is the distance PX multiplied by the distance PY. It is worth noting that the distance PY is the width of each of the first electrode blocks TX4~TX7, wherein the range of the distance PX and the distance PY is between about 4 and 6 mm. The gap distance gap (the gap 23 shown in FIG. 2) between each of the first electrode blocks TX4 to TX7 is between 10 and 200 micrometers. In addition, the width of the main line of each of the second electrode wires RX4 to RX7 is sw between 0.4 and 1 mm. The sub-wire 21 has a width distance st greater than 0 and less than a width distance sw of the main conductor. It is worth mentioning that the distance sq between any two second electrode wires RX4~RX7 is between 0.1 and 0.5 mm. More specifically, the distance sq is the distance of the ends of the sub-wires 21 on the adjacent sides of any two of the second electrode wires RX4 to RX7.

And the distance a between each pair of sub-wires 21 is in accordance with the sub-wire 21 set by the manufacturer. The logarithm has changed. For example, FIG. 3 is a pair of sub-wires 21 as a touch determination area, which divides the width distance PY of the first electrode blocks TX4 to TX7 into three equidistant intervals. However, although the present embodiment is used in an equidistant manner as an embodiment, it is not limited in practical application, and may be set in an unequal manner. More specifically, the distance a from the distance a is one-third of the distance PY of the sub-wire 21 is deducted, and the gap distance gap is deducted by two times.

Further, the deformed structure 211 connected to the sub-wire 21 has a width of su twice as st. In other words, the width of the short side of the deformed structure 211 is twice the width of the sub-wire 21. The length distance b of the deformed structure 211 is related to the width distance PY of the first electrode blocks TX4 to TX7. More specifically, in the present embodiment, the length distance b of the deformed structure 211 is between the distance st and the third distance PY. However, in the above embodiment in which the distance a is in the interval of the pair of sub-wires 21 and the like, the distance c between the length distance b of the deformed structure 211 and any two adjacent deformed structures 211 is equal, thus forming a distance of one-sixth. PY.

Finally, please refer to FIG. 3 and FIG. 4 at the same time. FIG. 4 is a schematic diagram of the touch layer circuit of the present embodiment being touched. The sensing layer of Figure 4 is the same circuit structure as Figure 3. The touch determination areas S1 to S9 are shown in FIG. 4 , and each touch determination area is formed by the area where the first electrode block and the second electrode lead intersect as shown in FIG. 3 (ie, Distance PX and distance PY range). Conventionally, when the touch point A falls in the touch determination area S5, the calculation of the touch determination is performed according to the change of the capacitance value of each area of the touch determination areas S1 to S9 to obtain an accurate position control position. However, if the touch point A falls on the touch determination area S4, there is no touch determination area on the left side that can provide reference determination, and only the touch determination areas S1, S2, S4, S5, S7, and S8 can be used. Judge. Therefore, the deformation structure 211 proposed in the present embodiment can help the edge touch determination area S4 of the touch panel to be judged on the calculation, and the capacitance value generated by the deformation structure of the touch determination areas S1, S4, and S7. In the calculation, avoid the problem of touch linearity degradation caused by edge effects. Further, it is also possible to effectively recognize that the touch determination area S4 is actually touched. Location, no misjudgment.

[The possible effect of this creation]

In summary, the circuit structure of the sensing layer proposed in the present embodiment can solve the defect that the edge of the sensing layer of the general capacitive touch panel cannot be accurately determined. More specifically, the edge of the capacitive touch panel is degraded by the edge effect of the sensing layer, and the touch linearity of the touch panel is degraded when touched, resulting in a range of about half of the channel of the general touch panel at the edge. Unable to determine touch points. Therefore, the sensing layer circuit structure of the present embodiment effectively improves the sensing amount of the edge of the sensing layer, compensates for the problem of the touch linearity degradation caused by the edge effect of the sensing layer, and further increases the overall usable area of the touch panel.

The above description is only the specific embodiment of the present invention, but the features of the present invention are not limited thereto, and any person skilled in the art can easily change or modify it in the field of the creation. Covered in the following patent scope of this case.

20‧‧‧Substrate

21‧‧‧Subwire

211‧‧‧ deformation structure

PX, PY, gap, a~c, sq, sw, st, su‧‧‧ distance

S9‧‧‧ touch judgment area

X‧‧‧first axial

Y‧‧‧second axial

Claims (11)

A sensing layer circuit structure includes: a substrate; a plurality of first electrode blocks, wherein the first electrode blocks are formed on the substrate by a first axial direction of the substrate, and any two of the first electrode regions a gap between the blocks; and a plurality of second electrode wires disposed on the substrate with a second axial direction of the substrate across the gap, between the two of the second electrode wires A first interval, each of the second electrode wires includes: a plurality of pairs of sub-wires, each of the sub-wires extending and symmetrically disposed on both sides of the second electrode lead. The sensing layer circuit structure of claim 1, wherein the second electrode wires are provided with at least one span, such that each of the first electrode blocks separated by the second electrode wires is electrically connected. The sensing layer circuit structure of claim 1, wherein the first interval is a distance between two ends of the sub-wires adjacent to two adjacent sides of the second electrode lead. The sensing layer circuit structure of claim 1, wherein any two adjacent sub-wires are equal in distance. The sensing layer circuit structure of claim 1, wherein the gap is between 30 and 50 microns. A sensing layer circuit structure includes: a substrate; a plurality of first electrode blocks, wherein the first electrode blocks are formed on the substrate by a first axial direction of the substrate, and any two of the first electrode regions a gap between the blocks; and a plurality of second electrode wires disposed on the substrate with a second axial direction of the substrate across the gap, between the two of the second electrode wires a first interval, each of the second electrode leads comprising: a plurality of pairs of sub-wires each extending and symmetrically disposed on both sides of the second electrode lead; wherein among the two outermost two of the second electrode leads on the substrate, the sub-wire adjacent to the outside of the substrate The end has a deformed structure. The sensing layer circuit structure of claim 6, wherein the deformed structure is a rectangle, and a long side is connected to the sub-wire. The sensing layer circuit structure of claim 7, wherein the length of the long side of the deformed structure is greater than the width of the sub-wire. The sensing layer circuit structure of claim 6, wherein a width of one of the short sides of the deformed structure is twice the width of the sub-wire. The sensing layer circuit structure of claim 7, wherein the length of the long side of the deformed structure is equal to the interval between two adjacent deformed structures. The sensing layer circuit structure of claim 7, wherein the long side of the deformed structure is disposed in a direction of the second axial direction of the substrate.