TW201317872A - Compound touch panel - Google Patents

Abstract

The invention is a compound touch panel including a first substrate and a second substrate. The first and second substrate have a surface and a lower surface respectively. A first induction circuit and a second induction circuit are formed on surface of the first substrate and lower surface of the second substrate respectively. Multiple parallel induction wires are formed on each induction circuit for composing an electromagnetic induction board jointly. A transparent electromagnetic induction layer is formed on surface of the second substrate for constituting a capacitance touch panel; parallel connection of two or more than two induction wires on the first and the second substrate can reduce resistor of induction wires and raise sensibility of electromagnetic induction board. The electromagnetic induction board and capacitance touch panel use identical transparent electrode manufacturing process so that the first and the second substrate can be integrated to a monomer with manual control and pen control functions simultaneously.

Description

Composite touch panel

The present invention relates to a composite touch panel, and more particularly to a touch panel that integrates a capacitive type and an electromagnetic touch panel.

The conventional electromagnetic touch panel generally includes an electromagnetic induction board 70 and an electromagnetic pen 73. As shown in FIG. 10, the electromagnetic induction board 70 is provided with an X-axis sensing line 71 and a Y-axis sensing line 72 for Inductively receiving the signal emitted by the electromagnetic pen 73; when the electromagnetic touch panel is applied to the display, the electromagnetic induction plate 70 is disposed on the back of the liquid crystal display 80, and a glass panel 81 is further disposed on the surface of the liquid crystal display 80; The electromagnetic pen 73 approaches the glass panel 81 and emits a signal. At this time, the sensing line corresponding to the position on the electromagnetic touch panel 70 will receive the signal, and after the interpretation, the position of the electromagnetic pen 73 can be defined; although the current electromagnetic touch The control board only supports single-touch, but it has the advantages that other mainstream touch panels (such as projected capacitive touch panels) do not have, that is, the drag track of the electromagnetic pen 73 can be sensed and displayed.

However, the electromagnetic touchpad has the disadvantage that the electromagnetic pen 73 must be used, and most of the touch panels support the freehand touch mode, and the electromagnetic touchpad does not support, but most 3C products, such as smart phones, The tablet supports the touch control mode in operation. Therefore, the electromagnetic touch panel can not meet the demand of the consumer market by the advantage of recognizing the drag track. The touch panel based on the electromagnetic touch panel and the hand touch has its own advantages, and the industry has integrated the two, such as the new type patent No. M386545 "Double-type touch display structure" in China, that is, in the display On the front and back sides, a hand-operated sensor (ie, a general capacitive or resistive touch panel) and a steering sensor (such as the aforementioned electromagnetic touch panel) are provided, thereby providing a single pen-operated sensor with a stylus Point pen touch function, while hand control sensor provides hand touch function. Referring to FIG. 11 , an exploded view of the components of the foregoing patent is mainly provided with a manipulation sensor 91 on the back of the display 90 to provide a control function with a stylus 92, and a surface of the display 90 is provided. The sensor 93 is controlled by one hand; according to the patent specification and the scope of the patent application, the display 90 includes a display panel and a backlight, the pen manipulation sensor 91 is disposed on the backlight, and the hand manipulation sensor 93 is disposed at On the display panel. It can be seen from the foregoing configuration that the foregoing patents emphasize that the dual-type touch display structure is provided. Compared with the known electromagnetic touch panel application method shown in FIG. 7, the hand-held sensor 93 is added only to the display panel at different places. .

It can be seen from the above that there is a need for both the touch and the write touch functions of the electronic device using the touch interface. However, the known technology (such as the aforementioned patent) only collects the two touch interfaces on the display 90, actually There is no integration. The existing electromagnetic touch panel uses a metal electrode process, which is different from the existing projection capacitive touch panel. Therefore, the above-mentioned electronic device using the touch interface is intended to provide both finger touch and writing touch. The control function requires two panels to be assembled separately and then assembled, which increases the manufacturing cost and assembly cost.

As described above, the electronic device of the existing touch interface needs to separately manufacture the electromagnetic touch panel and the capacitive touch panel, and the assembly is increased, which increases the manufacturing cost and the assembly cost. Therefore, the main purpose of the present invention is to provide A composite touch panel mainly integrates a capacitive touch panel and an electromagnetic touch panel through a structural design, thereby reducing manufacturing cost and facilitating assembly, and simultaneously providing finger touch and writing touch Control function.

The main technical means for achieving the foregoing objective is that the composite touch panel comprises: a first substrate having a surface, the surface is formed with a first sensing line, and the first sensing circuit is formed by using a transparent electrode (ITO) Forming a plurality of mutually parallel sensing lines; a second substrate is disposed on the first substrate, the second substrate has a surface and a bottom surface, and a second sensing line is formed on the bottom surface thereof, and the second sensing circuit is utilized The transparent electrode (ITO) forms a plurality of mutually parallel sensing lines and is interleaved with the sensing lines of the first sensing line on the first substrate, and together constitute an electromagnetic induction plate, and the surface of the second substrate is formed with more than one transparent electrode The sensing layer is configured to form a capacitive touch panel; the plurality of sensing lines of the first substrate and the second substrate are two or more sensing lines connected in parallel; and the composite touch panel composed of the foregoing components, Forming a first sensing line and a second sensing line on a surface of the first substrate and a bottom surface of the second substrate to jointly form an electromagnetic induction plate of the electromagnetic touch panel; Forming one or more transparent electrode sensing layers on the surface of the second substrate to form a capacitive touch panel; and paralleling two or more sensing lines on the first and second substrates into one unit It can reduce the resistance value of the single induction line and improve the sensitivity of the electromagnetic induction board. The electromagnetic induction board and the capacitive touch panel use the same transparent electrode process, which is easy to integrate the electromagnetic induction board and the capacitive touch panel into one single Body, reducing manufacturing and assembly costs, while providing finger touch and writing touch.

The first preferred embodiment of the present invention, as shown in FIG. 1 , is mainly composed of a first substrate 10 and a second substrate 20 which are superposed on each other. In this embodiment, the first and the first The first substrate 10 has a surface on which a first sensing line 11 is formed, and the first sensing circuit 11 is transparent. The electrode (ITO) is etched to form a plurality of long and parallel sensing lines 110. A gap is formed between the sensing lines 110 to be isolated from each other. The two ends of the sensing lines 110 respectively have a connecting portion 111 and 111. '.

The second substrate 20 has a bottom surface and a surface. The bottom surface of the second substrate 20 is opposite to the surface of the first substrate 10. The bottom surface of the second substrate 20 is formed with a second sensing line 22. The second sensing line 22 is formed. After being etched by a transparent electrode (ITO), a plurality of long and parallel sensing lines 220 are formed, and a gap is formed between the sensing lines 220 to be isolated from each other. The two ends of each sensing line 220 respectively have a connecting portion 221 When the first substrate 10 and the second substrate 20 are overlapped with each other, the sensing line 220 is staggered at right angles to the sensing line 110. Please refer to FIG. 3 to ensure the first sensing line on the first substrate 10. 11 and the second sensing circuit 22 on the second substrate 20 are not short-circuited with each other, and an insulating layer 30 is further disposed between the first sensing circuit 11 and the second sensing circuit 22; and the first sensing circuit on the first substrate 10 The second sensing circuit 22 on the second substrate 20 and the second sensing circuit 22 together form an electromagnetic induction plate, and can perform a writing touch function with an electromagnetic pen.

Referring to FIG. 4, the surface of the second substrate 20 is formed with one or more transparent electrode sensing layers 21, and the transparent electrode sensing layer 21 is mainly composed of a plurality of X-axis electrode strings 211 arranged in parallel and a plurality of parallel and mutually parallel The X-axis electrode string 211 is composed of a Y-axis electrode string 212 which is alternately arranged. Each of the X-axis electrode strings 211 is formed by a plurality of X-axis electrodes connected in series, and each of the Y-axis electrode strings 212 is composed of a plurality of Y-axis electrode strings. The transparent electrode sensing layer 21 composed of the X-axis electrode string 211 and the Y-axis electrode string 212 is used as a projected capacitive touch panel to support the hand touch mode; and the first and second sensing lines are The electromagnetic induction board formed by the 11 and 22 can be provided with a writing touch function by the electromagnetic pen, so that the invention can simultaneously provide the hand touch and the writing touch function.

Since the second sensing line 22 formed on the bottom surface of the second substrate 20 has the same arrangement as the first sensing line 11 formed on the surface of the first substrate 10, the first sensing line 11 is used as a connection method of the sensing line 110, see the figure. As shown in FIG. 5, the connection manner is such that the sensing lines 110 on the first substrate 10 are fixed at a fixed interval by two or more channels, and the sensing lines 110 of each unit are connected by the two ends thereof. In the schematic diagram shown in FIG. 5, the first sensing circuit 11 has 14 sensing lines 110, which are numbered as the left 7 sensing lines 110 number 1A~1G and the right side 7 as shown in the figure. The track sensing lines 110 are numbered 2A to 2G, and the sensing lines 110 of the fixed pitch numbers 1A and 2A are one unit, and the connecting portions 111 and 111' of the two ends are respectively connected to each other, and the sensing lines 110 of the numbers 1A and 2A are connected in parallel; In addition, the other corresponding numbers are in a unit of fixed pitch (1B, 2B, 1C, 2C, etc.), and the sensing lines 110 are connected in parallel in sequence, by connecting two parallel sensing lines 110 in parallel to make the parallel connection. The resistance of the sensing line 110 is reduced to the original single sense The resistance value of half the line 110, in order to enhance the sensitivity of the electromagnetic induction plate.

Referring to the second preferred embodiment of the present invention, as shown in FIG. 6, each sensing line 110 on the first substrate 10 is divided into two or more adjacent sensing lines 110 as a unit, and each unit is used. The sensing lines 110 are connected in parallel by their connecting portions 111, 111'. In the schematic diagram shown in FIG. 6, the first sensing circuit 11 has 14 sensing lines 110, which are numbered 1A~2G as shown in the figure. The two sensing lines 110 adjacent to the numbers 1A and 1B are connected to each other by the connecting portions 111, 111' of the two ends thereof; and the sensing lines 110 of other adjacent corresponding numbers (1C, 1D, 1E, 1F, etc.) are sequentially connected. The two are connected in parallel for one unit. By connecting two adjacent sensing lines 110 in parallel, the present embodiment has the same low resistance characteristics as the first preferred embodiment to improve the sensitivity of the electromagnetic induction plate.

Referring to the third preferred embodiment of the present invention, referring to FIG. 7, each sensing line 110 on the first substrate 10 is divided into two sensing lines 110, and the sensing line 110 in each unit is The connecting portions 111, 111' are respectively connected, and the two sensing lines 110 of each unit are not fixedly spaced. As shown in FIG. 7, the two sensing lines 110 of the first sensing line 11 numbered A1 and B1 are After the two ends of the connecting portions 111, 111' are connected to each other, they are respectively connected to the connecting port 12 through wires, and the other sensing lines 110 of the numbers (A2, B2, A3, B3, etc.) are connected in parallel in units of two to reduce them. The resistance value of each sensing line 110; as shown in FIG. 8, the sensing line 220 in the second sensing line 22 is orthogonally interleaved with the sensing line 110 in the first sensing line 11, and the second sensing line 22 is The two sensing wires 220 of the numbers A1 and B1 are connected to each other by the connecting portions 221 and 221' of the two ends thereof, and then connected to the connecting port 23 through wires, and the sensing wires 220 of other numbers (A2, B2, A3, B3, etc.) are respectively connected. Parallel connection is performed in units of two and two to reduce the resistance value of each sensing line 220.

Referring to FIG. 9 , which is a partial enlarged view of FIG. 7 , the surface of the one end connecting portion 111 is covered with an insulating layer 112 , and a plurality of wires 114 are formed on the insulating layer 112 . The two ends are respectively formed with a connection point 113. The connection point 113 allows the wire 114 to be connected to the desired connection portion 111. In the embodiment, the connection point 113 is such that the insulation layer 112 has a hole shape, thereby connecting the wire. 114 and the connecting portion 111, the sensing line 110 at the two ends of the wire 114 is formed in parallel. Since the wire 114 is formed on the insulating layer 112, the wire 114 is covered with an ink layer to protect the wire 114, so that the wire 114 can be crossed. The plurality of connecting portions 111 are then connected to the desired connecting portion 111 to achieve the purpose of paralleling the plurality of sensing lines 110.

In the composite touch panel constructed by the above structure, when the user touches the surface of the second substrate 20 with a finger, the transparent electrode sensing layer 21 thereon changes the capacitance between the X and Y axis electrodes to interpret the finger touch. Therefore, when the user uses the capacitive touch panel with the finger, the first and second sensing lines 11 and 22 between the first and second substrates 10 and 20 do not have any sensing action and output signal; On the other hand, when the user uses the electromagnetic pen to transmit signals at a specific position, and the first and second sensing lines 11 and 22 on the first and second substrates 10 and 20 are inductively received, the transparent electrode sensing layer 21 The X and Y axis electrodes also do not produce a change in capacitance; in other words, the present invention does not interfere with each other regardless of whether an electromagnetic induction plate or a capacitive touch panel is used.

Furthermore, the first and second sensing lines 11 and 22 on the first and second substrates 10 and 20 and the transparent electrode sensing layer 21 on the second substrate 20 are patterned, etched, etc. by using transparent electrodes (ITO). The steps are formed to facilitate simplification of the process technology and reduce manufacturing and assembly costs.

10. . . First substrate

11. . . First induction line

110. . . Induction line

111, 111’. . . Connection

112. . . Insulation

113. . . Junction

114. . . wire

12. . . Connection

20. . . Second substrate

twenty one. . . Transparent electrode sensing layer

211. . . X-axis electrode string

212. . . Y-axis electrode string

twenty two. . . Second induction line

220. . . Induction line

221, 221’. . . Connection

twenty three. . . Connection

30. . . Insulation

70. . . Electromagnetic induction board

71. . . X-axis sensing circuit

72. . . Y-axis sensing circuit

73. . . Electromagnetic pen

80. . . LCD Monitor

81. . . Glass panel

90. . . monitor

91. . . Pen manipulation sensor

92. . . Stylus

93. . . Hand manipulation sensor

Figure 1 is a perspective exploded view of a first preferred embodiment of the present invention.

Fig. 2 is a perspective exploded perspective view showing a first preferred embodiment of the present invention.

Figure 3 is a sectional view showing the combination of the first preferred embodiment of the present invention.

4 is a top plan view showing a transparent electrode sensing layer according to a first preferred embodiment of the present invention.

Fig. 5 is a top plan view showing the first substrate of the first preferred embodiment of the present invention.

Figure 6 is a top plan view showing a first substrate of a second preferred embodiment of the present invention.

Figure 7 is a top plan view of a first substrate in accordance with a third preferred embodiment of the present invention.

Figure 8 is a bottom plan view of a second substrate in accordance with a third preferred embodiment of the present invention.

Figure 9 is a partially enlarged plan view showing a plan view of a first substrate of a third preferred embodiment of the present invention.

Figure 10: Schematic diagram of the state of use of the existing electromagnetic touch panel.

Figure 11: An exploded view of China's new patent right M386545.

10. . . First substrate

11. . . First induction line

20. . . Second substrate

twenty one. . . Transparent electrode sensing layer

Claims (10)

A composite touch panel includes: a first substrate having a surface, the surface is formed with a first sensing line, wherein the first sensing circuit forms a plurality of mutually parallel sensing lines by using a transparent electrode (ITO); The second substrate is disposed on the first substrate. The second substrate has a surface and a bottom surface, and a bottom surface is formed with a second sensing line. The second sensing circuit is formed by using transparent electrodes (ITO) to form multiple parallel lines. The sensing lines are interleaved with the sensing lines of the first sensing line on the first substrate, and together form an electromagnetic induction board; and the surface of the second substrate is formed with more than one transparent electrode sensing layer to form a capacitive touch. The plurality of sensing lines of the first substrate and the second substrate are such that two or more sensing lines are connected in parallel with each other. The composite touch panel of claim 1, wherein the sensing line is connected by using two or more adjacent sensing lines on each substrate as a unit, and each sensing line of each unit Parallel to each other. The composite touch panel of claim 1, wherein the sensing line is connected by two or more sensing lines on each substrate as a unit and a fixed spacing, so that each unit is The sensing lines are connected in parallel with each other. The composite touch panel according to any one of claims 1 to 3, wherein a surface of the connecting portion of each of the sensing lines is covered with an insulating layer, and a plurality of wires are formed on the insulating layer, and each of the wires is formed with a plurality of wires The connection point is such that the wires connect the connection portions of two or more induction wires via a plurality of connection points. The composite touch panel of any one of claims 1 to 3, wherein the surface of the second substrate forms a transparent electrode sensing layer to form a projected capacitive touch panel. The composite touch panel of claim 4, wherein the surface of the second substrate forms a transparent electrode sensing layer to form a projected capacitive touch panel. The composite touch panel of any one of claims 1 to 3, wherein a second insulating layer is disposed between the second substrate and the third substrate. The composite touch panel of claim 4, wherein a second insulating layer is disposed between the second substrate and the third substrate. The composite touch panel of claim 5, wherein a second insulating layer is disposed between the second substrate and the third substrate. The composite touch panel of claim 6, wherein a second insulating layer is disposed between the second substrate and the third substrate.