TW201734726A - A structure with solar cell and touch function - Google Patents

Abstract

A structure with solar cell and touch function includes a transparent substrate, a first electrode pattern, a photoelectrical conversion material, a second electrode pattern and a third electrode pattern. The first electrode pattern is formed on the transparent substrate The photoelectrical conversion material is formed on the first electrode pattern. The second electrode pattern is formed on the photoelectrical conversion material. The third electrode pattern is formed on the transparent substrate. The first electrode pattern and the third electrode pattern are located on opposite sides of the transparent substrate. The first electrode pattern and the third electrode pattern are configured to provide touch function, and the first electrode pattern and the second electrode pattern are configured to extract electrical energy converted by the photoelectrical conversion material. Thereby the volume and/or area can be reduced by highly integration of the touch function and the photoelectrical conversion.

Description

Integrated solar power generation and touch function structure

The present invention relates to an integrated structure of a power generation function and a touch function; more particularly, the structure of the present invention integrates solar power generation and hand touch functions.

Many electronic devices require input commands; input structures such as buttons, keyboards, mice, trackballs, touch pads, and touch screens have been widely used. Among these input structures, the touch screen has become the mainstream of current development based on its many features such as ease of use and versatility. Basically, touch screens generally include a touch panel with a touch sensitive surface and a display screen for displaying icons or other images. The touch panel can be placed in front of the display screen and cover all display areas of the display screen. Various icons can correspond to different functions of the electronic device. When the object is in contact with the touch sensing surface, the touch panel can detect the touch action and the touch position, and generate a corresponding touch event according to the function corresponding to each icon, and the control IC can issue a command according to the touch event. Enable electronic devices to perform related functions. The above touch action can be single-point or multi-touch, and the contact between the object and the touch-sensitive surface is also It can be divided into various forms such as direct contact or floating touch. The touch action can be done by a finger, a stylus or any object that can form a touch sensor.

The touch panel basically includes a touch sensor to detect the touch action. There are various implementations of touch sensors, such as resistive, capacitive, surface acoustic or optical. Among them, the capacitive touch panel has become the current mainstream because of its ability to accurately detect the touch position and the ability to form multi-touch.

Generally used in small portable electronic devices, often equipped with chemical fuel cells such as lithium batteries and nickel-hydrogen batteries. However, the power of these batteries is often not available for long periods of time. Moreover, although there are currently rechargeable batteries, the power is still limited, and repeated charging causes inconvenience. Currently, products such as mobile power supplies are also being developed, but they still need to be recharged beforehand, and they need to be carried extra and bulky. In the current market, solar cells have been developed, trying to solve the problem of energy exhaustion by using endless sunlight.

However, integration of solar cells with the above-mentioned portable electronic devices equipped with touch panels still encounters problems. Based on the current requirements for the slim size of portable electronic devices, there is not enough room for these solar cells. For example, in the solar cell computer as shown in Fig. 1, the display screen and the button area 102 are deducted, and only a narrow area is left for the solar cell 101 to be placed. Since the electric energy generated by the solar cell 101 is affected by its light absorption area, such a narrow light absorption area still cannot provide sufficient electric energy.

According to the data, how to integrate the solar cell with the touch panel of the thin and light portable electronic device is an important issue.

In particular, the present invention provides a structure that integrates solar power generation and touch functions. Through a compact and efficient configuration, the panel area used for solar power generation can be equal to the area of the touch panel, so that the light absorption area is increased to obtain sufficient power.

To achieve the above objective, in one embodiment, the structure for integrating the solar power generation and the touch function includes a transparent substrate, a first electrode pattern layer, a photoelectric conversion material, a second electrode pattern layer, and a third electrode pattern. Floor. The transparent substrate comprises a light entry face. The first electrode pattern layer is formed on the transparent substrate, and the first electrode pattern layer and the light incident surface are respectively located on opposite sides of the transparent substrate. The photoelectric conversion material is disposed on the first electrode pattern layer. The second electrode pattern layer is formed on the photoelectric conversion material. The third electrode pattern layer is formed on the light incident surface. Therefore, the first electrode pattern layer and the third electrode pattern layer are used to provide a touch function, and the first electrode pattern layer and the second electrode pattern layer are used to conduct electrical energy converted by the photoelectric conversion material.

In the above structure, the first electrode pattern layer may include a plurality of spaced-apart wires; the third electrode pattern layer may include a plurality of spaced-apart wires, and the third electrode pattern layer has a wire extending direction different from the first electrode pattern layer. The wires extend in a direction that can be orthogonal or obliquely staggered. The material of each of the above wires may be indium tin oxide (ITO, Indium Tin Oxide). In addition, the first electrode pattern layer and the third electrode pattern layer may be formed into a capacitive touch structure; and one of the wire of the first electrode pattern layer or the wire of the third electrode pattern layer is used as the signal driving line, and the other Signal receiving line.

In the above structure, an external light may be incident on the light incident surface of the transparent substrate, and penetrate the transparent substrate and the first electrode pattern layer to the photoelectric conversion material to convert the light energy into electrical energy.

In another embodiment, the structure for integrating the solar power generation and the touch function comprises a transparent substrate, a first electrode pattern layer, a photoelectric conversion material, a second electrode pattern layer, a third electrode pattern layer, and a cover. board. The transparent substrate comprises a light entry face. The first electrode pattern layer is formed on the transparent substrate, and the first electrode pattern layer and the light incident surface are respectively located on opposite sides of the transparent substrate. The photoelectric conversion material is disposed on the first electrode pattern layer. The second electrode pattern layer is formed on the photoelectric conversion material. The third electrode pattern layer is formed on the light incident surface. A cover plate is formed on the third electrode pattern layer. The cover, the first electrode pattern layer and the third electrode pattern layer are used to provide a touch function, and the first electrode pattern layer and the second electrode pattern layer are used to conduct electrical energy converted by the photoelectric conversion material.

In the above structure, a liquid crystal display screen is further disposed under the second electrode pattern layer. The first electrode pattern layer and the third electrode pattern layer are connected to a control IC through a flexible printed circuit board (FPC Connector), and the touch function is controlled by the control IC.

The above-mentioned integrated solar power generation and touch function structure can provide a large light absorption area to enhance photoelectric conversion efficiency while providing a touch function, and achieve miniaturization demand in a highly integrated and compact configuration.

101‧‧‧ solar cells

102‧‧‧Key area

200‧‧‧Integrated solar power generation and touch function structure

210‧‧‧Transparent substrate

210a‧‧‧light incident surface

220‧‧‧First electrode pattern layer

221‧‧‧ wire

230‧‧‧Photoelectric conversion materials

240‧‧‧Second electrode pattern layer

250‧‧‧ third electrode pattern layer

251‧‧‧Wire

310‧‧‧ Cover

320‧‧‧LCD screen

330‧‧‧Control IC

340‧‧‧Flexible circuit board

350‧‧‧Flexible printed circuit board cable

C1‧‧‧ mutual capacitance

C2‧‧‧ self-capacitance

C3‧‧‧ self-capacitance

1 is a schematic diagram of a conventional solar computer; FIG. 2 is a schematic diagram showing the structure of integrated solar power generation and touch function according to an embodiment of the present invention; and FIG. 3 is a diagram showing integrated solar power generation according to FIG. FIG. 4 is a schematic diagram showing an embodiment of a touch function structure according to FIG. 3; and FIG. 5 is another embodiment of a touch function structure according to FIG. FIG. 6 is a schematic diagram showing a capacitive touch structure used in the present invention; FIG. 7 is a schematic diagram showing a capacitive touch principle used in the present invention; and FIG. 8 is a diagram showing an implementation according to the present invention; FIG. 9 is a schematic diagram showing the structure of a touch screen system according to FIG. 8; and FIG. 10 is a schematic diagram showing the structure of integrated solar power generation and touch function according to an embodiment of the invention. .

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. For the sake of clarity, many practical details will be explained in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, some conventional structures are used to simplify the schema. The components and the components will be illustrated in a simplified schematic manner.

Please refer to Figure 2 and Figure 3 together. 2 is a schematic diagram showing a structure 200 for integrating solar power generation and touch function according to an embodiment of the present invention; and FIG. 3 is an exploded perspective view showing a structure 200 for integrating solar power generation and touch function according to FIG.

The structure 200 for integrating solar power generation and touch function basically comprises a transparent substrate 210, a first electrode pattern layer 220, a photoelectric conversion material 230, a second electrode pattern layer 240 and a third electrode pattern layer 250.

The transparent substrate 210 includes a light incident surface 210a, which may be made of glass or other transparent material that allows light to pass through.

The first electrode pattern layer 220 is formed on the transparent substrate 210. The first electrode pattern layer 220 and the light incident surface 210a are respectively located on opposite sides of the transparent substrate 210. In detail, the transparent substrate 210 includes the light incident surface 210a and the remaining surface; and the first electrode pattern layer 220 is located on the surface opposite to the light incident surface 210a.

The photoelectric conversion material 230 is formed on the first electrode pattern layer 220.

The third electrode pattern layer 250 is formed on the light incident surface 210a. That is, the third electrode pattern layer 250 and the first electrode pattern layer 220 are formed on different opposite side surfaces of the transparent substrate 210, respectively.

In the above structure 200 for integrating solar power generation and touch function, the solar power generation function and the touch function can be simultaneously achieved. In detail, the transparent substrate 210, the first electrode pattern layer 220, the photoelectric conversion material 230, and the second electrode pattern layer 240 constitute a solar power generation structure; and the third electrode pattern The layer 250, the transparent substrate 210, and the first electrode pattern layer 220 constitute a touch structure. As can be seen from FIGS. 2 and 3, the first electrode pattern layer 220 serves as a partial structure for providing solar power generation and a partial structure for providing a touch function. Therefore, in the structure 200 for integrating solar power generation and touch function of the present invention, the solar power generation and the touch function are highly integrated, which is advantageous for streamlining the process and the demand for thinning of the electronic device in the future. In a practical example, the light passes through the third electrode pattern layer 250, enters the light incident surface 210a, and sequentially passes through the transparent substrate 210 and the first electrode pattern layer 220 to reach the photoelectric conversion material 230, and After the light energy is converted into electrical energy, it is supplied to the structure 200 that integrates the solar power generation and the touch function. In this way, in addition to being effective for thinning purposes, in the present invention, the light absorption area of solar power generation is equivalent to the area of the touch panel, thereby providing good light absorption, improving photoelectric conversion efficiency, and making the power of the entire device sustainable. For a long time.

FIG. 4 is a schematic diagram showing an embodiment of a touch function structure according to FIG. 3; FIG. 5 is a schematic view showing another embodiment of the touch function structure according to FIG. In one embodiment, the present invention utilizes a capacitive touch principle. In FIG. 4, the first electrode pattern layer 220 includes a plurality of wires 221 arranged at intervals; and the third electrode pattern layer 250 includes a plurality of wires 251 arranged at intervals. The wire 221 and the wire 251 have different extending directions, and the wire 221 can be arranged in various ways, for example, the extending direction thereof can form orthogonal or oblique staggering and the like. For example, in FIG. 4, if the wires 221 are arranged in parallel in the x-axis direction, the wires 251 may be arranged in parallel in the y-axis direction, and the extending direction of the wires 221 is orthogonal to the extending direction of the wires 251. The wires 221 and the wires 251 are not necessarily arranged as shown in FIG. 4, and they may also be arranged obliquely to extend their respective extensions. The directions are staggered. The wires 221 and 251 may be made of indium tin oxide (ITO, Indium Tin Oxide).

In FIG. 4, the first electrode pattern layer 220 and the third electrode pattern layer 250 are formed on both sides of the transparent substrate 210 by chemical etching, physical etching or other possible manner, that is, using a so-called double-sided indium tin oxide structure. . Or, as shown in FIG. 5, the third electrode pattern layer 250 and the first electrode pattern layer 220 are each composed of an indium tin oxide film on the upper and lower surfaces of the transparent substrate 210, wherein the transparent substrate 210 is used. Electrical material to create a capacitor.

Please refer to Figure 6 and Figure 7 together. 6 is a schematic diagram of a capacitive touch structure used in the present invention; and FIG. 7 is a schematic diagram showing the principle of a capacitive touch used in the present invention.

In Fig. 6, the lead 221 of the X-axis is sent as a signal driving line, and the line 251 of the Y-axis is used as a signal receiving line for receiving the signal transmitted by the line 221. The wire 221 has a self-capacitance C2, and the wire 251 has a self-capacitance C3. The line 221 and the line 251 are interleaved to form a mutual capacitance C1 of about several pF. The self-capacitance C3 is formed in parallel with the intersection of other signal driving lines (wire 221) and signal receiving line (wire 251). Therefore, the value of the self-capacitor C3 is equivalent to the value of the mutual capacitance C1 multiplied by the horizontal signal driving line. The total number of wires (221) is about tens of pF. The signal measured by the signal receiving line (wire 251) corresponds to the series voltage division of the mutual capacitance C1 and the self capacitance C3. When the finger touches, the mutual capacitance C1 is generated, and the touch position of the finger is measured by the signal change of the mutual capacitance C1 and the self capacitance C3.

Please continue to refer to Figure 8 and Figure 9. FIG. 8 is a schematic diagram showing the structure of a touch screen according to an embodiment of the invention; FIG. 9 is a diagram showing the basis according to the eighth Schematic diagram of the touch screen system architecture of the figure.

In the touch structure in FIG. 4 or FIG. 5, if it is to form a touch screen, as shown in FIG. A cover plate 310 may be disposed above the third electrode pattern layer 250 for protection. The cover plate 310 can be made of a transparent glass material. In addition, a liquid crystal display screen 320 may be disposed under the second electrode pattern layer 240.

FIG. 9 is a view showing an example of use of the touch structure as shown in FIG. 8. The first electrode pattern layer 220 and the third electrode pattern layer 250 are connected to the control IC 330 of a flexible circuit board 340 through a flexible printed circuit board connector 350 (FPC Connector). When the finger touches the cover 310, a capacitive touch effect is generated, and the signal is transmitted to the control through the flexible printed circuit board connecting line 350 through the wire 221 of the first electrode pattern layer 220 and the wire 251 of the third electrode pattern layer 250. IC330. The control IC 330 can cause the control IC 330 to effectively control the overall device to perform a specific function according to the image displayed on the liquid crystal display screen 320.

FIG. 10 is a schematic structural view showing integrated solar power generation and touch function according to an embodiment of the invention.

The structure 200 for integrating the solar power generation and the touch function in the foregoing FIG. 3 is a basic structure, and one may be implemented, for example, as shown in FIG. In order to simultaneously control the touch function and solar power generation, the second electrode pattern layer 240 is connected to the control IC 330 on the flexible circuit board 340 by the flexible printed circuit board connection line 350. The control IC 330 can be used to control the touch function or the solar power generation separately; the control IC 330 can also be a multiplexed processor, and the single control IC 330 can simultaneously control the touch function or the solar power generation, so that the overall structure is more compact and more capable. Meet the needs of miniaturization. When the control IC 330 is in the normal state, Controls solar power generation; when touched, it is used to receive or transmit touch signals to achieve touch function. In this way, the effect of integrating solar power generation and touch functions can be achieved.

In summary, the structure of the integrated solar power generation and the touch function disclosed in the present invention can be highly integrated through the solar power generation structure and the touch structure, so that the device with the touch function can be miniaturized while still providing sufficient The light absorbing area is used to provide the required power to solve the problem of insufficient power in such devices.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

200‧‧‧Integrated solar power generation and touch function structure

210‧‧‧Transparent substrate

210a‧‧‧light incident surface

220‧‧‧First electrode pattern layer

221‧‧‧ wire

230‧‧‧Photoelectric conversion materials

240‧‧‧Second electrode pattern layer

250‧‧‧ third electrode pattern layer

251‧‧‧Wire

Claims (12)

A structure for integrating solar power generation and touch function, comprising: a transparent substrate comprising a light incident surface; a first electrode pattern layer formed on the transparent substrate, wherein the first electrode pattern layer and the light The incident surfaces are respectively located on opposite sides of the transparent substrate; a photoelectric conversion material is formed on the first electrode pattern layer; a second electrode pattern layer is formed on the photoelectric conversion material; and a third electrode pattern layer Forming on the light incident surface; wherein the first electrode pattern layer and the third electrode pattern layer are used to provide a touch function; the first electrode pattern layer and the second electrode pattern layer are used to conduct the light The electrical energy converted by the photoelectric conversion material. The structure for integrating solar power generation and touch function according to claim 1, wherein the first electrode pattern layer comprises a plurality of wires arranged at intervals. The structure for integrating solar power generation and touch function as described in claim 2, wherein the wires are made of indium tin oxide (ITO). The structure for integrating solar power generation and touch function according to claim 2, wherein the third electrode pattern layer comprises a plurality of spaced-apart wires, and the wire extensions of the third electrode pattern layer The wires extend in a direction different from the first electrode pattern layer. The structure for integrating solar power generation and touch function according to claim 4, wherein the wires of the third electrode pattern layer are made of indium tin oxide. The structure of integrating the solar power generation and the touch function as described in claim 4, wherein the wire extending directions of the third electrode pattern layer are orthogonal to the wire extending directions of the first electrode pattern layer or Interlaced diagonally. The structure for integrating solar power generation and touch function according to claim 4, wherein one of the wires of the first electrode pattern layer or the wires of the third electrode pattern layer is used as a signal driving line. And the other as a signal receiving line. The structure of integrating solar power generation and touch function according to claim 7 , wherein the first electrode pattern layer and the third electrode pattern layer form a capacitive touch structure. The structure for integrating solar power generation and touch function according to claim 1, wherein an incident light is incident on the light incident surface, and the transparent substrate and the first electrode pattern layer are penetrated to the photoelectric conversion material. And convert light energy into electrical energy. A structure for integrating solar power generation and touch function, comprising: a transparent substrate comprising a light incident surface; a first electrode pattern layer formed on the transparent substrate, wherein the first electrode pattern layer and the light The incident surfaces are respectively located on opposite sides of the transparent substrate; a photoelectric conversion material is formed on the first electrode pattern layer; a second electrode pattern layer is formed on the photoelectric conversion material; and a third electrode pattern layer, Formed on the light incident surface; and a cover plate formed on the third electrode pattern layer; wherein the cover, the first electrode pattern layer and the third electrode pattern layer are used to provide a touch function, The first electrode pattern layer and the second electrode pattern layer are used to conduct electrical energy converted through the photoelectric conversion material. The structure for integrating solar power generation and touch function according to claim 10, further comprising a liquid crystal display screen disposed under the second electrode pattern layer. The first electrode pattern layer and the third electrode pattern layer are transmitted through a flexible printed circuit board (FPC Connector, Flexible Printed Circuit Board), as disclosed in claim 10, for integrating the solar power generation and the touch function. The connector is connected to a control IC and controls the touch function through the control IC.