CN201084129Y - touch input device - Google Patents

Abstract

The utility model discloses a touch input device, which is arranged in an electronic device, and comprises: a touch panel, which provides a user 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 below 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, and 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 push button devices or non-directional touch input devices is commonly used on pointer 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 heat-plastic material, which is used to prevent the key unit 10 from directly contacting the flexible circuit board 14, so as to avoid damage the flexible circuit board 14; the flexible circuit board 14 also includes a sensor 140, when the user presses a button in the button unit 10, the flexible circuit board 14 can be pressed through the polyurethane adhesive film 12, and the flexible circuit board 14 can be sensed The sensor 140 transmits a signal to notify the processing unit of the electronic device; the metal frame 16 and the rubber key interface 18 are used to fix the position of the press control button device, and another function of the rubber key interface 18 is to prevent the soft button when the user presses the key unit 10 The circuit board 14 is excessively deformed.

In the known technology, omnidirectional touch input devices can be divided into three types: resistive, electromagnetic and inductive, mainly including touch panels (plastic films) and flexible printed circuit boards (FPCBs), providing users with The movement control of the pointing cursor in the two-dimensional direction uses the change of the voltage value to provide the processor of the electronic device to identify the position that 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-mentioned 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, without affecting the touch performance of the touch input device. Down, in order to increase the user's convenience.

Contents of the invention

The main purpose of this utility model is to provide a touch input device that can be pressed. By adding structural components and depressible design, the force type of the structural components can be changed without affecting the touch performance of the touch input device. In order to improve the usability and function of the touch input device.

A touch input device of the present utility model is set in an electronic device, comprising: a touch panel, providing a user input interface; a flexible circuit board, located below the touch panel, bent into a C The flexible circuit board is regarded as the upper flexible circuit board and the lower flexible circuit board; the 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.

Another touch input device of the present utility model is set in an electronic device, including a touch panel, a flexible circuit board located below the touch panel, a rubber pad and a plurality of metal gaskets, each metal gasket represents a function The position of the key; the flexible circuit board is bent into a C shape, and the flexible circuit board can be regarded as including the upper flexible circuit board and the lower flexible circuit board, which is close to the upper flexible circuit board under the touch panel It also has a plurality of sensing components to sense the touch position of the user. The rubber pad is located between the upper and lower flexible circuit boards, and a plurality of metal pads are located between the lower flexible circuit board and the rubber pad. between.

In order to have a further understanding and recognition of the utility model, it is hereby described in detail in conjunction with the accompanying drawings as follows.

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.

Description of main component marking

10 key unit

12 Polyurethane film

16 metal frame

18 rubber button interface

140 sensors

2 touch input device

20 touch panel

22a upper circuit board

22b lower circuit board

24 rubber pads

More than 26 metal spacers

More than 220 sensing components

14, 22 flexible circuit board

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. Type, because it can be implemented by those skilled 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 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 components 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. .

The rubber pad 24 is arranged between the upper and lower flexible circuit boards 22, and is attached below the lower surface of the upper flexible circuit board 22a to prevent excessive deformation of the flexible circuit board 22; and a plurality of metal pads 26, It is arranged 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 spacers 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 (relatively) to the lower flexible circuit board 22b with a gap. The upper surface is good to achieve the tactile feeling when pressing and to 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 touch feeling and the actual number of function keys required.

When the user touches the touch panel 20 with a 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 has been 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 the rubber pad 24 is added in the middle of the flexible circuit board 22, it can increase touch input The flexibility of the device prevents the excessive deformation of the flexible circuit board 22 and the touch panel 20, thereby affecting the false sensing of the sensing components 220 around the pressed position.

The flexible circuit board 22 can determine whether the user uses 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 on any one of the metal pads 26 for more than 25ms, or directly exerts a pressing force, or does not move past any adjacent sensing component 220 for more than 25ms, it is determined that the pressing function is to be performed. The function of the key 26, at this time, the function of the pressed function key 26 will be executed and the touch function will be temporarily stopped; when the user stays on any metal spacer 26 for less than 25ms, or moves through any phase 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 view 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 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 function key on the left, the finger presses The area will include the sensing components 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 through to the next adjacent sensing element for more than 25ms The component 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.

In the utility model, the touch input device can effectively prevent the touch panel from being damaged due to pressure 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. Stress concentration at a single point can easily 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.

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 entity of the present utility model is only limited to the above-mentioned embodiments. Therefore, any modifications made by those skilled in the art without departing from the spirit and scope of the present utility model shall be included in the claims.

Claims (9)

1. a touch-control input device is arranged in the electronic installation, it is characterized in that comprising:

Contact panel provides the user input interface;

Flexible circuit board is positioned at this contact panel below, deflects into the C font, this flexible circuit board is considered as comprising upper strata flexible circuit board and lower floor's flexible circuit board;

Rubber blanket is arranged between this upper and lower layer flexible circuit board, is positioned under this upper strata flexible circuit board; And

A plurality of metallic gaskets are located between this lower floor's flexible circuit board and this rubber blanket, and wherein the position of a function key is represented in the position of each this metallic gasket.

2. touch-control input device according to claim 1, it is characterized in that also comprising a plurality of sensing components, be positioned at surface on this upper strata flexible circuit board, in order to sensing user's touch position, and the cursor signal of generation correspondence is in the screen-picture of this electronic installation.

3. touch-control input device according to claim 1, it is characterized in that these a plurality of metallic gaskets are linked to this rubber blanket lower surface, and directly contact surface on this lower floor's flexible circuit board, when the user pushes this function key, transmit the order of this function key of being pushed.

4. touch-control input device according to claim 1, it is characterized in that these a plurality of metallic gaskets are linked to this rubber blanket lower surface, the one section space that is separated by regards on this lower floor's flexible circuit board the surface, when the user pushes this function key, this metallic gasket touches this lower floor's flexible circuit board, to transmit the order of this function key of being pushed.

5. touch-control input device according to claim 1 is characterized in that this electronic installation is the input media of mobile phone, personal digital assistant, MP3 player or notebook.

6. touch-control input device, be arranged in the electronic installation, comprise contact panel, flexible circuit board is positioned at this contact panel below, rubber blanket and a plurality of metallic gasket, each this metallic gasket is represented the position of a function key, it is characterized in that: this flexible circuit board deflects into the C font, this flexible circuit board is considered as comprising upper strata flexible circuit board and lower floor's flexible circuit board, wherein be close on this upper strata flexible circuit board of this contact panel below and also have a plurality of sensing components, position of touch in order to the sensing user, this rubber blanket is positioned on this, between lower floor's flexible circuit board, and these a plurality of metallic gaskets are between this lower floor's flexible circuit board and this rubber blanket.

7. touch-control input device according to claim 6 is characterized in that this electronic installation is the input media of mobile phone, personal digital assistant, MP3 player or notebook.

8. touch-control input device according to claim 6 is characterized in that these a plurality of metallic gaskets directly contact this lower floor's flexible circuit board, when the user pushes this function key, transmits the order of this function key of being pushed.

9. touch-control input device according to claim 6, it is characterized in that these a plurality of metallic gaskets one section space that is separated by regards to this lower floor's flexible circuit board, when the user pushed this function key, this metallic gasket touched this lower floor's flexible circuit board, to transmit the order of this function key of being pushed.

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