CN201084101Y - touch input device - Google Patents

Abstract

The utility model is a touch input device, which is arranged in an electronic device, and comprises: a touch panel, providing a user with an input interface; a flexible circuit board, which is bent into a C shape, and the flexible circuit board can be regarded as an upper flexible circuit board and a lower flexible circuit board; a rubber pad, which is arranged between the upper and lower flexible circuit boards and is located under the upper flexible circuit board; and a plurality of metal pads, which are arranged between the lower flexible circuit board and the rubber pad, wherein the position of each metal pad represents the position of a function key.

Description

touch input device

technical field

The utility model relates to a touch input device, in particular to a touch input device which uses structural changes to improve the force-bearing type of the touch input device and has a plurality of metal contact pads to increase its functionality.

Background technique

The use of directional press control button devices or non-directional touch input devices is commonly used on index input devices (Index Input Devices) such as computers (Computers), personal digital assistants (Personal Digital Assistant, PDA) or other electronic equipment; In the known technology, there are various implementations of the structural composition of the push control button device, and the composition shown in FIG. 1 is one of them.

As shown in the figure, the push button device mainly includes a button unit 10, a polyurethane film (Thermoplastic Polyurethane Pellet, TPU) 12, a flexible circuit board (FPCB) 14, a metal frame 16 and a rubber button interface 18. Wherein, the key unit 10 is composed of a plurality of protruding keys, which are exposed outside the casing of the electronic device; the polyurethane adhesive film 12 is a heating plastic material, which is used to prevent the key unit 10 from directly contacting the flexible circuit board 14, To avoid damage to the flexible circuit board 14; the flexible circuit board 14 also includes a sensor 140, when the user presses one of the keys of the key unit 10, the flexible circuit board 14 can be pressed through the polyurethane film 12, and the flexible circuit board 14 can be activated. The flexible circuit board 14 senses and transmits a signal through the sensor 140 to notify the processing unit of the electronic device; the metal frame 16 and the rubber button interface 18 are used to fix the position of the push button device, and another function of the rubber button interface 18 is to prevent the flexible circuit board from 14 is excessively deformed when the user presses the key unit 10 .

In the known technology, the omnidirectional touch input device can be divided into three types: resistive, electromagnetic and inductive, mainly including a touch panel (plastic film) and a flexible circuit board (FPCB), providing The user controls the movement of the cursor in the two-dimensional direction by using the change of the voltage value to provide the processor of the electronic device to identify the position the user wants to point to.

Generally speaking, the touch input device has a planar structure. If it is applied to the keyboard input, when the user touches the planar structure with his finger, he lacks the tactile sensation of pressing the button. The control panel is pressed multiple times, pressed for too long or pressed too short, resulting in operation errors and inconvenience in use.

In view of the above problems, the utility model provides a depressible touch input device. A depressible structure is specially designed for the function keys that need to be frequently used when using the touch input device. Performance, in order to increase the user's convenience.

Utility model content

The main purpose of the present utility model is to provide a pressable touch input device. By adding structural elements and depressible design, the type of force on the structural elements can be changed without affecting the touch input device. Under the touch performance, the usability and function of the touch input device can be improved.

A touch input device of the present utility model is provided in an electronic device, comprising: a touch panel, which provides an input interface for the user; a flexible circuit board, which is bent into a C It is regarded as an upper flexible circuit board and a lower flexible circuit board; a rubber pad is arranged between the upper and lower flexible circuit boards, and is located under the upper flexible circuit board; and a plurality of metal gaskets are arranged on the Between the lower flexible circuit board and the rubber pad, the position of each metal pad represents the position of a function key. Wherein, the rubber pad is used to increase flexibility and avoid excessive deformation of the flexible circuit board when the user presses the function key.

In the present invention, the touch input device can effectively avoid pressing the touch panel by adding a plurality of metal pads between the flexible circuit boards and adding rubber pads between the flexible circuit boards of the touch module. Because the compressive stress is concentrated on a single point, it is easy to cause deformation of the surrounding flexible circuit board and touch panel, improve the flexibility of the touch input device, and increase the different function keys that can be pressed to improve the functionality of the touch input device .

In order to have a further understanding and recognition of the utility model, a detailed description will be made as follows in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic diagram of a known push control button device;

2A is a schematic diagram of a touch input device according to an embodiment of the present invention;

2B is a schematic diagram of a flexible circuit board of a touch input device according to an embodiment of the present invention; and

FIG. 3 is a schematic diagram of a practical application of a touch input device according to an embodiment.

Detailed ways

Please refer to FIG. 2A and FIG. 2B at the same time. FIG. 2A is a schematic diagram of a touch input device according to an embodiment of the present invention; FIG. 2B is a schematic diagram of a flexible circuit board of a touch input device according to an embodiment of the present invention. FIG. 2A shows a front top view and a side view of the touch panel device 2 , and FIG. 2B shows a front top view and a side view of the flexible circuit board 22 .

The touch input device 2 is used in electronic devices, such as: mobile phones, personal digital assistants, notebook computer input devices, and other portable electronic devices; the touch input device 2 can be a general capacitive, electromagnetic or resistive type The type can be implemented because it belongs to the common knowledge of those of ordinary skill in the art, so it will not be described in detail.

The touch input device 2 includes a touch panel 20 , a flexible circuit board 22 , a rubber pad 24 and a plurality of metal pads 26 . Wherein, the touch panel 20 is the contact interface between the touch input device and the user, provides the user with an input interface, and is made of a thermoplastic, transparent or semi-transparent plastic material, such as: polyurethane film (TPU , Thermoplastic Polyurethane Pellet).

The flexible circuit board 22 is located under the touch panel and is bent into a C-shape. It can be regarded as an upper flexible circuit board 22a and a lower flexible circuit board 22b. Wherein, the upper surface of the upper flexible circuit board 22a has a plurality of sensing elements 220 facing the touch panel 20 for sensing the user's touch position and generating a corresponding cursor signal on the screen of the electronic device. picture.

A rubber pad 24, arranged between the upper and lower flexible circuit boards 22, attached below the lower surface of the upper flexible circuit board 22a, in order to prevent excessive deformation of the flexible circuit board 22; and a plurality of metal pads 26 , set at a specific position between the upper surface of the lower flexible circuit board 22b and the rubber pad 24, wherein each metal pad 26 represents the position of a specific function key.

A plurality of metal pads 26 can be connected to the lower surface of the rubber pad 24, and can be directly connected to the upper surface of the lower flexible circuit board 22b according to the circuit design, or face (opposed) to the lower flexible circuit board 22b with a gap. The upper surface of the upper surface, so as to achieve the tactile feeling when pressing and make the flexible circuit board 22 transmit the command of the pressed function key 26, so as to perform this function smoothly. In addition, the size of the metal gasket can be designed and adjusted according to the tactile feeling and the actual number of function keys required.

When the user touches the touch panel 20 with his finger, or presses a certain metal pad 26 (function key), or touches the touch panel 20 with a tool such as a light pen, the voltage of the flexible circuit board 22 will be It is changed to sense the user's touch position, and generate corresponding cursor signals and cursor displacement control on the screen of the electronic device; and because a rubber pad 24 is added in the middle of the flexible circuit board 22, it can increase the touch The flexibility of the input device avoids excessive deformation of the flexible circuit board 22 and the touch panel 20 , thereby affecting the false sensing of the sensing element 220 around the pressed position.

The flexible circuit board 22 can determine whether the user is using the touch function or the press function according to the length of time the user's finger stays on the same fixed point on the touch panel. When the user stays at the position of any metal pad 26 for more than 25ms, or directly applies a pressing force, or does not move past any adjacent sensing element 220 for more than 25ms, it is determined that the press is to be performed. The function of the function key 26 will execute the function of the pressed function key 26 and temporarily stop the touch function; when the user stays on any metal pad 26 for less than 25ms or If the adjacent sensing element 220 has not exceeded 25 ms, it is determined that the touch function is to be executed. Wherein, the execution of the press function will take priority over the touch function, that is, when the touch command and the press command are input at the same time, the press command will be executed first.

Please refer to FIG. 3 , which is a schematic diagram of a touch input device according to an embodiment of the present invention. The principle is the same as above, when the user places his finger on the touch panel 20, the flexible circuit board can determine whether the user is using the touch function or the touch panel according to the length of time the user's finger stays on the same fixed point on the touch panel. It is a push function.

When the user stays on the touch panel, the touch area of the finger usually exceeds the area of a sensing element 220, as shown in the figure, that is, when the user wants to press the left function key, the finger presses The area will include the sensing elements around the adjacent function key (that is, the range indicated by the dotted arrow); therefore, the touch input device receives the sensing signal and determines that if the user has not moved to the next adjacent function key for more than 25ms The sensing element 220 (that is, the range indicated by the solid arrow) is considered to perform the function of pressing the function key 26 . Then the touch input device executes the pressing function, and suspends the touch function of the touch input device.

Although the present utility model is described above with preferred embodiments, it is not intended to limit the spirit of the present utility model and the entities of the present utility model are limited to the above-mentioned embodiments. Therefore, any modifications made by those with ordinary knowledge in the technical field without departing from the spirit and scope of the present utility model shall be included in the following claims.

Claims (9)

1. A touch input device, arranged in an electronic device, comprising a touch panel, a flexible circuit positioned below the touch panel, a rubber pad and a plurality of metal gaskets, each of the metal gaskets Represents the position of a function key, characterized in that: The flexible circuit board is bent into a C shape, so that the flexible circuit board is regarded as comprising an upper flexible circuit board and a lower flexible circuit board; The rubber pad is arranged between the upper and lower flexible circuit boards and under the upper flexible circuit boards; and The plurality of metal pads are disposed between the lower flexible circuit board and the rubber pad. 2. The touch input device according to claim 1, further comprising a plurality of sensing elements, located on the upper surface of the upper flexible circuit board, for sensing the user's touch position and generating A corresponding cursor signal is displayed on the screen of the electronic device. 3. The touch input device according to claim 1, wherein the plurality of metal pads are connected to the lower surface of the rubber pad and directly contact the upper surface of the lower flexible circuit board, when the user presses the When a function key is pressed, the command of the pressed function key is transmitted. 4. The touch input device according to claim 1, wherein the plurality of metal pads are connected to the lower surface of the rubber pad, separated from the upper surface of the lower flexible circuit board by a gap, when the user When the function key is pressed, the metal washer contacts the lower flexible circuit board to transmit the command of the pressed function key. 5. The touch input device according to claim 1, wherein the electronic device is an input device of a mobile phone, a personal digital assistant device, an MP3 player or a notebook computer. 6. A touch input device installed in an electronic device, comprising a touch panel, a flexible circuit board located under the touch panel, a rubber pad and a plurality of metal gaskets, each of which represents a The position of a function key is characterized in that: the flexible circuit board is bent into a C shape, so that the flexible circuit board is regarded as comprising an upper layer flexible circuit board and a lower layer flexible circuit board, wherein the The upper flexible circuit board under the touch panel has a plurality of sensing elements for sensing the user's touch position, the rubber pad is located between the upper and lower flexible circuit boards, and the plurality of The metal gasket is located between the lower flexible circuit board and the rubber pad. 7. The touch input device according to claim 6, wherein the electronic device is an input device of a multi-mobile phone, a personal digital assistant device, an MP3 player or a notebook computer. 8. The touch input device according to claim 6, wherein the plurality of metal spacers directly contact the lower flexible circuit board, and when the user presses the function key, the information of the pressed function key is transmitted. Order. 9. The touch input device as claimed in claim 6, wherein the plurality of metal spacers face the lower flexible circuit board with a gap, and when the user presses the function key, the metal spacers contact to the lower flexible circuit board to transmit the command of the pressed function key.

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