CN112486332A - Touch control module - Google Patents
Touch control module Download PDFInfo
- Publication number
- CN112486332A CN112486332A CN201910865364.9A CN201910865364A CN112486332A CN 112486332 A CN112486332 A CN 112486332A CN 201910865364 A CN201910865364 A CN 201910865364A CN 112486332 A CN112486332 A CN 112486332A
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- CN
- China
- Prior art keywords
- light
- guide plate
- protective cover
- light guide
- emitting patterns
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001681 protective effect Effects 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims description 9
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 3
- 238000012905 input function Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides a touch module, which comprises a light guide plate, a light source module capable of generating light beams, a conductive circuit and a protective cover, wherein the light guide plate is provided with a plurality of light-emitting patterns. The conductive circuit is arranged on the upper surface of the light guide plate and can detect fingers to generate touch signals. The protective cover covers the light guide plate and the conductive circuit and can be touched by fingers. When the light beam is projected to the plurality of light-emitting patterns, the plurality of light-emitting patterns are displayed on the protective cover. When the light beam is not generated, the plurality of light emitting patterns are not displayed on the protective cover.
Description
Technical Field
The present disclosure relates to input devices, and particularly to a touch module disposed on a computer.
Background
Conventional computer peripheral input devices include mouse devices, keyboard devices, and trackball devices. With the progress of the times, touch modules are provided in the market, so that users can directly use fingers to operate the touch modules, and computer systems can be operated. The touch module is widely used, and the early notebook computers included the touch module, which can control the movement of the cursor or click the image of the user interface, without using the mouse to operate the notebook computer. The touch module has the advantages that the touch module can be operated by a user in an intuitive mode, so that various instructions can be executed conveniently.
Please refer to fig. 1, which is a schematic structural diagram of a notebook computer and a touch module in the prior art. The touch module 1 of the prior art is disposed in the computer casing 101 of the notebook computer 10 and partially exposed to allow a user's finger to operate the notebook computer 10 in a touch manner. For example: the user can touch the touch module 1 by a finger and slide on the touch module 1 to move the cursor 103 on the screen 102 of the notebook computer 10. Alternatively, the notebook computer 2 can execute the key function by pressing the touch module 1 of the prior art. Therefore, the touch module 1 in the prior art can replace the function of a mouse, so that a user does not need to carry and install the mouse additionally, which is inconvenient.
With the development of touch modules, touch modules with multiple input functions are being introduced to provide more functions. The touch control module comprises a light emitting module to generate light beams. When the light emitting module is turned on to generate a light beam, the touch module may display a predetermined pattern to provide a first input mode, for example: the touch module displays the pattern of the numeric keyboard, so that the touch module can provide a digital input function. On the contrary, when the light emitting module is not turned on, the touch module does not display the pattern, so that a second input mode can be provided, for example: conventional control cursor movement functions.
In short, the user can determine which input mode the touch module is currently in by whether the pattern is displayed, and then perform corresponding operations according to the mode. For example: when the light emitting module is not turned on, the appearance of the touch module is in a state of black whole surface, and the input mode is preset as a mode for controlling a mouse cursor, at the moment, a user can move the mouse and click according to the touch module displayed as black whole surface. When the light-emitting module is turned on, the touch module displays a luminous numeric keyboard, and the input mode is preset as a mode for controlling the numeric keyboard. At this time, the user can input numbers, symbols and the like through the touch module according to the displayed numeric keyboard pattern.
Next, the internal structure of the touch module with multi-input function is described. Please refer to fig. 2, which is a schematic side sectional view of a touch module with a multi-input function in the prior art. The touch module 2 with multi-input function in the prior art includes a circuit board 21, a plurality of light emitting elements 22 (only one is shown), a light guide plate 23, and a protective cover 24. The circuit board 21 includes a first conductive trace 211 and a second conductive trace 212. The light emitting element 22 is disposed on one side of the circuit board 21 and electrically connected to the first conductive trace 211, so as to obtain power through the circuit board, and then be driven to generate the light beam B1. The light guide plate 23 is disposed on the circuit board 21, and the light emitting elements 22 are disposed at the side of the light guide plate 23, such that the light beam B1 generated by the light emitting elements 22 is projected into the light guide plate 23. The light guide plate 23 has light guide dots 231, which can change the traveling direction of the light beam B1 to guide the light beam B1 to project upward. The protective cover 24 covers the light guide plate 23 to protect the light guide plate 23, wherein the protective cover 24 has a plurality of patterns 241, and the patterns 241 are disposed on the protective cover 24 by printing.
In the circuit board 21, the first conductive traces are distributed below the protective cover 24 and function to detect the touch of a finger of a user to generate a corresponding touch signal. With the above structure, the touch module 2 with multi-input function in the prior art can provide different input functions in different states. The first conductive traces 211 and the second conductive traces 212 are formed on the circuit board 21 by a metal material.
However, in order to detect the position touched by the finger, the circuit board 21 of the touch module 2 with the multi-input function in the prior art must have a size including the entire protection cover 24, which causes the size and thickness of the touch module 2 to be too large, and the structure is difficult to be thinned.
Therefore, a touch module with a light and thin profile is needed.
Disclosure of Invention
The invention aims to provide a touch module with a light and thin appearance.
In a preferred embodiment, the present invention provides a touch module for generating a touch signal by being touched by a finger, the touch module including a light guide plate, a light source module, a conductive trace and a protective cover, wherein the light guide plate has a plurality of light-emitting patterns. The light source module is arranged on one side of the light guide plate and used for generating a light beam and projecting the light beam into the light guide plate. The conductive circuit is arranged on an upper surface of the light guide plate and used for detecting the finger to generate the touch signal. The protective cover covers the light guide plate and the conductive circuit, is used for protecting the conductive circuit and can be touched by the finger; when the light beam is projected to the plurality of light-emitting patterns, the plurality of light-emitting patterns are displayed on the protective cover; when the light beam is not generated, the plurality of light-emitting patterns are not displayed on the protective cover.
In a preferred embodiment, the present invention provides a touch module for generating a touch signal by being touched by a finger, the touch module includes a light guide plate, a light source module, a first conductive trace, a second conductive trace, and a protective cover, wherein the light guide plate has a plurality of light-emitting patterns. The light source module is arranged on one side of the light guide plate and used for generating a light beam and projecting the light beam into the light guide plate. The first conductive circuit is arranged on an upper surface of the light guide plate, and the second conductive circuit is arranged on a lower surface of the light guide plate and used for detecting the finger together with the first conductive circuit to generate the touch signal. The protective cover covers the light guide plate and the first conductive circuit, is used for protecting the first conductive circuit and can be touched by the finger; when the light beam is projected to the plurality of light-emitting patterns, the plurality of light-emitting patterns are displayed on the protective cover; when the light beam is not generated, the plurality of light-emitting patterns are not displayed on the protective cover.
In short, the conductive traces for detecting fingers in the touch module of the present invention are disposed on the light guide plate, and have a light and thin structure according to the material characteristics of the conductive traces, so that the conductive traces do not greatly increase the thickness of the light guide plate. Moreover, since the circuit board in the touch module of the present invention does not need to detect the operation of the finger, the size of the circuit board is only enough to carry a plurality of light emitting elements. In other words, the size of the circuit board can be greatly reduced compared to the prior art. Therefore, the touch module can have a light and thin shape, so that the problems in the prior art are solved.
Drawings
Fig. 1 is a schematic structural diagram of an appearance of a prior art keyboard.
Fig. 2 is a schematic side sectional view of a structure of a touch module with a multi-input function in the prior art.
Fig. 3 is a schematic side sectional view of a touch module according to a first preferred embodiment of the invention.
Fig. 4 is a schematic side sectional view of a touch module according to a second preferred embodiment of the invention.
The reference numerals are explained below:
1. 2, 3, 4 touch module
10 notebook computer
21. 321 circuit board
22. 322 light emitting element
23. 31, 41 light guide plate
24. 34, 45 protective cover
32. 42 light source module
33 conductive line
43. 211 first conductive line
44. 212 second conductive trace
101 computer casing
102 screen
103 cursor
231 light guide mesh point
241 pattern
311. 411 light emitting pattern
B1, B2, B3 light beams
Detailed Description
In view of the problems caused by the prior art, the present invention provides a touch module capable of solving the problems of the prior art. Embodiments of the present invention will be further explained by the following description in conjunction with the related drawings. In the drawings, the shape and size may be exaggerated for simplicity and convenience. It is to be understood that elements not specifically shown in the drawings or described in the specification are in a form known to those of ordinary skill in the art. Various changes and modifications may be suggested to one skilled in the art based on the teachings herein.
Please refer to fig. 3, which is a schematic side sectional view of a touch module according to a first preferred embodiment of the invention. The touch module 3 can be touched by a finger of a user to generate a corresponding touch signal, and includes a light guide plate 31, a light source module 32, a conductive trace 33, and a protective cover 34, wherein the light guide plate 31 has a plurality of light emitting patterns 311. The light source module 32 is disposed at a side of the light guide plate 31, and functions to generate a light beam B2 and project the light beam B2 into the light guide plate 31. The conductive traces 33 are disposed on the upper surface of the light guide plate 31 and function to detect the touch position of the finger of the user and generate a corresponding touch signal. The protective cover 34 covers the light guide plate 31 and the conductive traces 33, and functions to protect the conductive traces 31 and can be touched by fingers. When the light beam B2 is projected to the plurality of light-emitting patterns 311, the plurality of light-emitting patterns 311 are displayed on the protective cover 34. On the contrary, when the light beam B2 is not generated, the light-emitting patterns 311 are not displayed on the protective cover 34.
In the preferred embodiment, the plurality of light emitting patterns 311 are disposed on the printed dots or light guiding microstructures on the lower surface of the light guiding plate 31, and the protective cover 34 is made of a translucent material, and the protective cover 34 has a predetermined light shielding rate. When the light beam B2 passes through the light-emitting patterns 311 and is projected to the protective cover 34, the light-emitting patterns 311 can be displayed on the protective cover 34. When the light beam B2 is not projected onto the protection cover 34, the light-emitting patterns 311 are not displayed on the protection cover 34 according to the predetermined shading rate of the protection cover 34 itself.
The light source module 32 includes a circuit board 321 and a plurality of light emitting elements 322 (only one is shown), wherein the circuit board 321 is disposed at a side of the light guide plate 31 and can provide power to the plurality of light emitting elements 322. The light emitting elements 322 are disposed on the circuit board 321, and receive the power provided by the circuit board 321 to generate the light beam B2. In the preferred embodiment, the light emitting device 322 can be a lateral light emitting diode, and the circuit board 321 is a Printed Circuit Board (PCB) or a Flexible Printed Circuit (FPC).
It should be noted that the light guide plate 31 may be made of a glass material, a Polycarbonate (PC) material or a polymethyl methacrylate (PMMA) material, and the light guide plate 31 is subjected to a yellow light process or a laser process to etch the conductive traces 33. Furthermore, the conductive traces 33 may be electrically connected to an external driving circuit (not shown) via other traces. In the preferred embodiment, the conductive traces 33 are formed of Indium Tin Oxide (ITO), and the conductive traces 33 and the light guide plate 31 together form a Self-Capacitance (Self Capacitance) type touch panel. Since ito is transparent, the light beam B2 is not blocked from traveling, and the light emitting effect of the touch module 3 is not affected. The detailed structure and operation principle of the self-contained touch pad are well known to those skilled in the art, and therefore, the detailed description thereof is omitted.
The operation of the touch module 3 of the present invention will be described. When the light source module 32 is not driven to generate the light beam B2, the touch module 3 is in the first input mode and does not display the plurality of light-emitting patterns 311 on the protection cover 34 according to the predetermined light-shielding rate of the protection cover 34. When the light source module 32 is driven to make the light emitting elements 322 generate the light beam B2, the touch module 3 is switched to the second input mode. The light beam B2 is projected into the light guide plate 31 and passes through the light-emitting patterns 311, such that the traveling direction of the light beam B2 is changed to project upward, and the light beam B2 is projected onto the protective cover 34, thereby displaying the light-emitting patterns 311 on the protective cover 34. The operation of mode switching performed by the touch module 3 can be performed by an external microprocessor or control chip, and the detailed operation thereof is well known to those skilled in the art, and thus will not be described again.
As shown in fig. 3, the conductive traces 33 for detecting fingers in the touch module 3 of the present invention are disposed on the light guide plate 31, and have a light and thin structure according to the material characteristics of the conductive traces 33, so the conductive traces 33 do not significantly increase the thickness of the light guide plate 31. Moreover, since the circuit board 321 in the touch module 3 of the present invention does not need to detect the operation of the finger, the size of the circuit board 321 only needs to be enough to carry the plurality of light emitting elements 322. In other words, the size of the circuit board 321 can be greatly reduced. Therefore, the touch module 3 of the present invention can have a light and thin profile, thereby improving the problems of the prior art.
In addition, the present invention provides a second preferred embodiment different from the above. Please refer to fig. 4, which is a schematic side sectional view illustrating a structure of a touch module according to a second preferred embodiment of the invention. The touch module 4 includes a light guide plate 41, a light source module 42, a first conductive trace 43, a second conductive trace 44 and a protective cover 45, and the light guide plate 41 has a plurality of light emitting patterns 411. The light source module 42 includes a circuit board 421 and a plurality of light emitting elements 422 capable of generating a light beam B3. The structure of the touch module 4 of the preferred embodiment is substantially the same as that of the touch module 3 of the preferred embodiment, and the same parts are not repeated. The difference between the two is that the touch module 4 of the preferred embodiment further includes a second conductive trace 44.
In fig. 4, the first conductive traces 43 are disposed on the upper surface of the light guide plate 41, and the second conductive traces 44 are disposed on the lower surface of the light guide plate 41, and function to detect the position of the finger of the user together with the first conductive traces 43 to generate the corresponding touch signal. In the preferred embodiment, the first conductive traces 43 and the second conductive traces 44 form a Mutual Capacitance (Mutual Capacitance) type touch panel together with the light guide plate 41, and the first conductive traces 43 and the second conductive traces 44 are made of ito. The formation process of the first conductive traces 43 and the second conductive traces 44 are substantially the same as the conductive traces 33 of the above-mentioned preferred embodiment, and therefore, the description thereof is omitted.
As shown in fig. 4, the first conductive traces 43 and the second conductive traces 44 for detecting fingers in the touch module 4 of the present invention are disposed on the light guide plate 31, and have a light and thin structure according to the material characteristics of the first conductive traces 43 and the second conductive traces 44, so that the first conductive traces 43 and the second conductive traces 44 do not greatly increase the thickness of the light guide plate 41. As in the previous preferred embodiment: since the circuit board 421 in the touch module 4 of the present invention does not need to detect the operation of the finger, the size of the circuit board 421 only needs to be enough to carry a plurality of light emitting elements 422. In other words, the size of the circuit board 421 can be greatly reduced. Therefore, the touch module 4 of the present invention can have a light and thin profile, thereby improving the problems of the prior art.
The above description is only a preferred embodiment of the present invention and should not be taken as limiting the claims, so that other equivalent changes and modifications without departing from the spirit of the present invention are intended to be included in the claims.
Claims (10)
1. A touch module for generating a touch signal by being touched by a finger, comprising:
a light guide plate having a plurality of light emitting patterns;
the light source module is arranged on one side of the light guide plate and used for generating a light beam and projecting the light beam into the light guide plate;
the conductive circuit is arranged on the upper surface of the light guide plate and used for detecting the finger to generate the touch signal; and
a protective cover covering the light guide plate and the conductive circuit for protecting the conductive circuit and being touched by the finger; when the light beam is projected to the plurality of light-emitting patterns, the plurality of light-emitting patterns are displayed on the protective cover; when the light beam is not generated, the plurality of light-emitting patterns are not displayed on the protective cover.
2. The touch module of claim 1, wherein the light source module comprises:
a circuit board, which is arranged on the side of the light guide plate and is used for providing electric power; and
a light emitting element disposed on the circuit board for generating the light beam in response to the power.
3. The touch module of claim 1, wherein the conductive traces and the light guide plate together form a self-contained touch panel, and the conductive traces are formed of indium tin oxide.
4. The touch module of claim 1, wherein the plurality of light emitting patterns are disposed on a printed dot or a light guide microstructure on a lower surface of the light guide plate.
5. The touch module of claim 1, wherein the protective cover is made of a translucent material and has a predetermined light-shielding rate; when the light beam passes through the plurality of light-emitting patterns and is projected to the protective cover, the plurality of light-emitting patterns are displayed on the protective cover; and when the light beam is not projected to the protective cover, the plurality of light-emitting patterns are not displayed on the protective cover according to the preset shading rate.
6. A touch module for generating a touch signal by being touched by a finger, comprising:
a light guide plate having a plurality of light emitting patterns;
the light source module is arranged on one side of the light guide plate and used for generating a light beam and projecting the light beam into the light guide plate;
a first conductive circuit disposed on an upper surface of the light guide plate;
the second conductive circuit is arranged on the lower surface of the light guide plate and used for detecting the finger together with the first conductive circuit to generate the touch signal; and
a protective cover covering the light guide plate and the first conductive circuit for protecting the first conductive circuit and being touched by the finger; when the light beam is projected to the plurality of light-emitting patterns, the plurality of light-emitting patterns are displayed on the protective cover; when the light beam is not generated, the plurality of light-emitting patterns are not displayed on the protective cover.
7. The touch module of claim 6, wherein the light source module comprises:
a circuit board, which is arranged on the side of the light guide plate and is used for providing electric power; and
a light emitting element disposed on the circuit board for generating the light beam in response to the power.
8. The touch module of claim 6, wherein the first conductive trace and the second conductive trace form a mutual capacitance touch pad together with the light guide plate, and the first conductive trace and the second conductive trace are made of indium tin oxide.
9. The touch module of claim 6, wherein the plurality of light emitting patterns are disposed on a printed dot or a light guide microstructure on a lower surface of the light guide plate.
10. The touch module of claim 6, wherein the protective cover is made of a translucent material and has a predetermined light-shielding rate; when the light beam passes through the plurality of light-emitting patterns and is projected to the protective cover, the plurality of light-emitting patterns are displayed on the protective cover; and when the light beam is not projected to the protective cover, the plurality of light-emitting patterns are not displayed on the protective cover according to the preset shading rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910865364.9A CN112486332A (en) | 2019-09-12 | 2019-09-12 | Touch control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910865364.9A CN112486332A (en) | 2019-09-12 | 2019-09-12 | Touch control module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112486332A true CN112486332A (en) | 2021-03-12 |
Family
ID=74920815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910865364.9A Pending CN112486332A (en) | 2019-09-12 | 2019-09-12 | Touch control module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112486332A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101192127A (en) * | 2006-11-27 | 2008-06-04 | 三星电子株式会社 | Touch sensor |
| CN102880353A (en) * | 2011-07-12 | 2013-01-16 | 致伸科技股份有限公司 | Input device with multilayer light emission patterns |
| TW201324286A (en) * | 2011-12-09 | 2013-06-16 | Primax Electronics Ltd | Display device and input device with multi pattern layers |
-
2019
- 2019-09-12 CN CN201910865364.9A patent/CN112486332A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101192127A (en) * | 2006-11-27 | 2008-06-04 | 三星电子株式会社 | Touch sensor |
| CN102880353A (en) * | 2011-07-12 | 2013-01-16 | 致伸科技股份有限公司 | Input device with multilayer light emission patterns |
| TW201324286A (en) * | 2011-12-09 | 2013-06-16 | Primax Electronics Ltd | Display device and input device with multi pattern layers |
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Application publication date: 20210312 |
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