CN202257522U

CN202257522U - Optical touch controller

Info

Publication number: CN202257522U
Application number: CN2011203432827U
Authority: CN
Inventors: 欧石平; 李建华
Original assignee: TRULY SEMICONDUCTORS (SHANWEI) CO Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2011-09-14
Filing date: 2011-09-14
Publication date: 2012-05-30
Anticipated expiration: 2021-09-14

Abstract

The utility model discloses an optical touch controller which comprises an optical filter cover a lens, an optical induction component and a circuit board which are connected sequentially inside the optical filter cover as well as a button connected with the circuit board and installed on the optical filter cover. The button comprises a button body and a metal dome component. The optical touch controller further comprises a spring installed on the metal dome component. When the optical filter cover is pressed by a finger, the pressing force is transferred to the metal dome component through the spring. With the effect of the spring, the pressing force transferred to the metal dome component is smaller than the pressing force of the finger, so that the pressure borne by the metal dome in the metal dome component is reduced so as to prolong the service life of the metal dome; and meantime, the pressing touch sense is improved due to larger deformation of the spring.

Description

A kind of optical touch device

Technical field

The utility model relates to the touch technology field, relates to a kind of optical touch device in particular.

Background technology

Along with the development of photoelectric technology, the optical touch device is widely used in various electronic installations, for example in the mobile phone as the omniselector of mobile phone, perhaps be used to finger touch module that replaces mouse function etc. in the computer.

Existing optical touch device mainly is made up of eyeglass, optical sensor, wiring board, shade and button, and eyeglass, optical sensor and wiring board link to each other successively and place in the shade, button connection line plate; And link to each other with shade, placing outside the shade, Fig. 1 shows the plan structure synoptic diagram of this existing optical touch device; Wiring board 100 and button 200 have been shown among Fig. 1, and wherein button 200 mainly is made up of the young chip module 300 of pot, in use; The finger presses shade, thus exert pressure to the young chip module 300 of pot on the button, make that the young sheet of pot at assembly place is stressed; Touch the contact on the wiring board; Form the loop, electric current passes through, thereby has guaranteed the operate as normal of optical touch device.

But existing this optical touch device is because long-term the use causes the young sheet of pot to damage easily, thereby the serviceable life of the young sheet of influence pot.

The utility model content

In view of this, the utility model provides a kind of optical touch device, in order to solve the young sheet of pot short problem in serviceable life in the optical touch device.

For realizing above-mentioned purpose, the utility model provides following technical scheme:

A kind of optical touch device; Comprise shade, place in the shade eyeglass, optical inducer and the wiring board that link to each other successively, link to each other with wiring board and be installed in the button on the shade; Said button comprises keying body and the young chip module of pot; Also comprise spring, said spring is installed on the young chip module of said pot, through spring pressing force is passed to the young chip module of pot.

Preferably, said button is a film key.

Can know that via above-mentioned technical scheme compared with prior art, the utility model provides a kind of optical touch device; Said optical touch device comprises a spring, and said spring is installed on the young chip module of pot of button, when the finger presses shade; Through spring pressing force is passed to the young chip module of pot, because the buffer action of spring makes that the pressure that passes on the young chip module of pot will be less than the pressing force of finger; Therefore can reduce the pressure that bears of the young sheet of pot in the young chip module of pot, prolong the serviceable life of the young sheet of pot, simultaneously; Because the deflection of spring is bigger, therefore also increased pressing touch.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is the embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.

Fig. 1 is existing optical touch device vertical view;

Fig. 2 is the side view of the optical touch device of the utility model;

Fig. 3 is the vertical view of the optical touch device of the utility model.

Embodiment

To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

The utility model embodiment discloses a kind of optical touch device, and said optical touch device comprises a spring, and said spring is installed on the young chip module of pot of button; Thereby during the finger presses shade; Through spring pressing force is passed to the young chip module of pot, the young sheet of pot in the assembly receives pressure, thereby makes it contact with the wiring board contact; The work of assurance touch controller; Because the pressure that is delivered on the young sheet of pot through spring will reduce greatly, thereby can reduce the pressure that bears of pot young sheet, prolonged the serviceable life of the young sheet of pot.Because the deflection of spring is bigger, can also increase pressing touch simultaneously.

Referring to Fig. 1, show the side view of a kind of optical touch device of the utility model.

Referring to Fig. 2, show the vertical view of a kind of optical touch device of the utility model.

In conjunction with Fig. 1 and Fig. 2; Said optical touch device can comprise shade 201, places in the shade 201 eyeglass and the optical inducer that link to each other successively, links to each other with optical inducer and is installed in shade; Wiring board 202 on 201; The button 203 that links to each other with wiring board 202, said button 203 comprise keying body 204 and the young chip module 205 of pot, and said optical touch device also comprises spring 206; Said spring 206 is installed on the young chip module 205 of said pot, through spring 206 pressing force is passed to the young chip module 205 of said pot.

Because eyeglass and optical inducer are positioned at shade 102, therefore in Fig. 1, do not illustrate.

Need to prove that said optical touch device must also comprise some other basic building blocks, since identical with prior art, repeat no more at this.

In practical application, described optical touch device is installed in the relevant position of mobile phone, remote control or computer usually, and finger is directly pushed shade; Pressing force is delivered to the button place, and button passes to the young chip module of pot with pressing force again through spring, and the young sheet of pot that is positioned at the young chip module of pot place can receive the pressure that spring brings; Make with wiring board on the contact contact, thereby the formation loop has electric current to pass through; Touch controller startup work, the LED lamp in the touch controller emits beam, and shines on the finger surface through eyeglass and shade; The image of finger surface is reflected back toward eyeglass, arrives optical sensor through eyeglass, and optical sensor detects the image of finger; Can calculate relative displacement according to the moving direction of finger, give mainframe program with information transmission, can realize control action through wiring board.For example, existing smart mobile phone omniselector is made up of the optical touch device usually, the shade of finger touch optical touch device; Through light reaction, can realize operation to mobile phone, for example choose certain menu; Open certain feature list etc., adopt the technical scheme of the utility model, a spring is installed on button; The pressing force of finger presses shade is passed to the young chip module of pot again through spring, make that the young sheet of pot in the assembly contacts with wiring board, because the buffer action of spring; With the pressing force that makes pressure that the young sheet of pot receives less than finger, therefore reduced the pressure that bears of the young sheet of assembly place pot, can prolong the serviceable life of the young sheet of pot.

Simultaneously, because its diameter of the young sheet of pot is less, deflection is also less, is generally the millimeter magnitude.Therefore sense of touch is bad, and finger needs to increase pressure could make the young sheet of pot be out of shape, and therefore also damages the young sheet of pot easily; And the utility model is installed a spring on button; The deflection of spring is bigger, has improved pressing touch, even if apply same pressure simultaneously; The pressure that transfers to the young sheet of pot through spring also can diminish, thereby can increase the service life.

Because optical touch device button one side; The side that spring promptly is housed directly links to each other with the installation site, and said spring need satisfy, fix the optical touch device after; Owing to the power of pot on the young chip module that acts on that its distortion produces, be unlikely to make the young sheet distortion of pot and contacting with wiring board.Therefore the performance of spring satisfies above-mentioned condition and gets final product, and according to different practical situations, can select the spring of different performance.

Wherein, described button is a film key, and for comprising the thin slice of band glue of the young sheet of pot, the button top is with one deck conducting film, and said spring is directly installed on the zone at the young chip module of pot place on the conducting film.Need to prove that the accompanying drawing in the utility model, optical touch device are square device, it can also be other shapes, and for example circular, the utility model is not done concrete qualification to this.

Each embodiment adopts the mode of going forward one by one to describe in the utility model book, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims

1. an optical touch device comprises shade, places the eyeglass, optical inducer and the wiring board that link to each other successively in the shade; Link to each other with wiring board and be installed in the button on the shade; Said button comprises keying body and the young chip module of pot, it is characterized in that, also comprises spring; Said spring is installed on the young chip module of said pot, through spring pressing force is passed to the young chip module of pot.

2. optical touch device according to claim 1 is characterized in that, said button is a film key.