KR20100062274A - Optical joystick and method of manufacture thereof - Google Patents

Abstract

PURPOSE: An optical joystick and a manufacturing method thereof for improving the product quality are provided to improve assembly capability through the simplification of the assembling process. CONSTITUTION: A light source member and an image sensor through the transparent molding. A lighting system and a light guide system are composed of an upper package(40) through an exterior light shielding material in order to correspond to the light source member and the image sensor of the lower package. The bottom package and top package are accepted inside the housing in which the subject contact surface is included. The housing is composed of the penetration zone in which the infrared ray of the light source member is transmitted.

Description

Optical joystick and its manufacturing method {OPTICAL JOYSTICK AND METHOD OF MANUFACTURE THEREOF}

The present invention relates to an optical joystick applicable to a user interface of an electronic device such as a portable terminal and a manufacturing method thereof.

In general, electronic devices such as mobile terminals and PDAs (Personal Digital Assistants) generally adopt a user interface using a keypad.

In more detail, a typical portable electronic device includes a keypad having a plurality of buttons for inputting numbers, letters, or symbols, and a user presses a button on the keypad to input desired data such as numbers or words. You can type in or select the menu.

In addition, the portable electronic device includes a display unit to display data input by the user through the keypad and / or related information.

In recent years, wireless Internet services such as WIBRO (Wireless Broadband) and wireless mobile communication services have been commercialized to support communication services and Internet services using electronic devices.Graphical User Interface (GUI) has been adopted for mobile electronic devices such as mobile phones and PDAs. Windows operating systems, such as Windows CE, are being adopted to support this.

In addition, with the development of communication technology, the portable electronic device provides various additional services to the user, and the GUI-based Windows operating system facilitates the provision of the additional service by the portable electronic device.

A user interface for more convenient use of a general electronic device is a pointing device such as a mouse, a touchpad, a joystick, etc. Recently, a pointer such as a cursor is detected by detecting an optical signal that changes according to the movement of a finger, which is a subject. Optical joysticks that move or receive information and / or commands desired by the user have been developed and applied to electronic devices.

1 is a schematic cross-sectional view showing the operation principle of a conventional optical joystick.

First, the conventional optical joystick 10 may be provided separately from the electronic device, and may be connected by wire or wirelessly, but may also be directly mounted on the main body of the electronic device. Is designed to have a minimized structure.

Referring to the drawings, the conventional light joystick 10 is a light source (1) that emits infrared rays, a housing (2) that is illuminated by the light source (1) is in contact with the object, and is housed inside the housing (2) It consists of a holder (3) and an imaging member (4) received inside the holder (3) to image the infrared rays hit the subject, and an image sensor (5) for receiving the infrared rays formed through the imaging member (4).

When the user comes into contact with the subject P on the surface of the housing, the conventional optical joystick 10 may be irradiated with the infrared rays emitted toward the subject P and then reflected and introduced into the housing 2. .

Infrared rays introduced into the housing 2 are transmitted to the image sensor 5 in an image formed by the image forming member 4. The image sensor 5 captures the transmitted infrared rays as an image screen, calculates the captured image screen as a displacement value, and transmits the image to the microcomputer of the electronic device.

The microcomputer generates a cursor on the display screen according to the received displacement value.

Therefore, the user can conveniently select the displayed icon or the like using the generated cursor.

However, the conventional optical joystick configured as described above has a problem that the work process is cumbersome and the assembly is inferior because the worker has to separately prepare the housing, the holder, the imaging member, the image sensor, and the like, and then manufacture the completed module.

That is, in the conventional optical joystick, the housing, the holder, the imaging member, and the image sensor are manufactured, respectively, and then the operator has to assemble one by one according to the assembling order using a separate tool.

In order to compensate for this problem, the entire assembly process should be automated. However, since the size of each component is too small, it is difficult to automate the entire assembly process, and only a part of the assembly process can be converted into an automated process.

Therefore, the assembly of the conventional optical joystick has not been greatly improved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an optical joystick and a method of manufacturing the same, which can be expected to improve productability as well as to improve assembly performance by simplifying the assembly process.

The optical joystick and the method of manufacturing the same according to the embodiment of the present invention have the effect of improving the assembly performance through the simplification of the assembly process and of improving the productability with a slimmer standard.

In order to effectively achieve the above object, the present invention, the light source member and the image sensor mounted on the substrate is a lower package formed by molding through a transparent sealing material; An upper package in which an illumination system and a light guide system are molded through an external light blocking material so as to correspond to the light source member and the image sensor of the lower package; Characterized in that it comprises a.

The lower package and the upper package may be accommodated in a housing having a subject contact surface, and the housing may be configured of a transmission zone through which infrared rays of the light source member are transmitted and a non-transmission zone through which the infrared light is not transmitted.

In this case, the illumination system may be configured to be molded vertically or inclined, the illumination system may be coated with a high reflectance coating on the inner surface or the outer surface so that the infrared ray of the light source member is made to total reflection.

In addition, a blocking film may be provided between the light source member and the image sensor to block a light source radiated from the light source member. The blocking film may be a black EMC.

In addition, the barrier layer may be made of a tape, or may be made of a mask in which the light source member and the image sensor are fitted at the same time and closely adhered to the substrate.

Further, any one of a boss or a gasket for adjusting the height of the upper package may be further provided between the lower package and the upper package.

On the other hand, the light guide system is characterized in that the fiber (Fiber).

In addition, the light guide system may be further provided with a filter for blocking the inflow of light outside the infrared wavelength band. The filter may be a coating material configured on any one of an upper surface, a bottom surface, and a front surface of the light guide system, and the filter may be a tape configured on any one of an upper surface, a bottom surface, and a front surface of the light guide system.

The external light shielding material may be made of black EMC.

The light guide system may include a multi-core core and a clad that accommodates the multi-core core therein.

The light guide system may include a single core and a plurality of clads containing the single core therein.

The upper package may further include a green lens that forms infrared rays on either or both of the upper and lower surfaces of the light guide system. The lower package may include an installation hole into which the light guide system and the light guide system of the upper package are fitted. Can be formed.

In addition, the illumination system and the light guide system may be in close contact with each other so as to correspond to the light source member and the image sensor mounted on the substrate, and the external light blocking material may be filled and molded to surround them.

The lower package and the upper package may be accommodated in a housing having a subject contact surface.

The housing is composed of a transmission zone through which the infrared rays of the light source member are transmitted and a non-transmission zone through which the infrared rays are not transmitted.

In addition, the light guide system is characterized in that the fiber (Fiber), the external light shielding material is characterized in that the black (Black) EMC.

In addition, the illumination system may be configured to be molded vertically or inclined.

The light guide system may further include a green lens in close contact with an image sensor and a lower end, and an infrared image forming on the upper end.

In addition, the light source member and the image sensor mounted on the substrate; A light guide system installed in close contact with the surface of the image sensor; An external light shielding material molded to block inflow of external light into the image sensor and the light guide system; And a housing accommodating the light source member and the external light shielding material therein; It is provided including.

The housing may include a transmission zone through which infrared rays of the light source member are transmitted, and a non-transmission zone supporting and supporting the transmission zone.

In addition, an image sensor mounted on the substrate; A light guide system installed adjacent to the surface of the image sensor; An external light shielding material molded to block inflow of external light into the image sensor and the light guide system; A housing accommodating the light source member and the external light shielding material therein and contacting a subject; And an illumination system connected to the substrate and the flexible substrate and emitting infrared light toward a housing at a position adjacent to an upper end of the external light blocking material. Characterized in that provided with a.

In addition, the housing may be composed of a transmission zone through which the infrared ray of the light source member is transmitted, and a non-transmission zone supporting the transmission zone.

In addition, mounting the light source member and the image sensor on the substrate; Manufacturing the lower package by molding the light source member and the image sensor with a transparent encapsulant and a blocking film; Manufacturing an upper package by molding an illumination system and a light guide system with an external light shielding material so as to correspond to the light source member and the image sensor; Characterized in that it comprises a.

Combining the housing consisting of a transmission zone and a non-transmission zone such that the upper package and the lower package are wrapped; It further includes.

In addition, mounting the light source member and the image sensor on the substrate; Closely contacting an illumination system and a light guide system so as to correspond to the light source member and the image sensor; Filling and molding an external light shielding material after the light source member, the image sensor, the illumination system, and the light guide system are in close contact with each other; Characterized in that it comprises a.

Coupling a housing including a transmission zone and a non-transmission zone after the external light blocking material is molded; It further includes.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The optical joystick 100 according to the embodiment of the present invention includes a lower package 20 and an upper package 40, and further includes a housing 50 that accommodates the lower package 20 and the upper package 40. .

The lower package 20 includes a light source member 24 mounted on a substrate 22 and a substrate 22 through a process such as SMT, an image sensor 26 mounted on the same SMT process as the light source member 24, and molding them. It includes a transparent encapsulant 28.

The light source member 24 has an LED emitting infrared light mounted on the substrate 22 through an SMT process.

In addition, the image sensor 26 continuously captures the received infrared rays, calculates the change of the captured image screen as a displacement value, and is mounted on the substrate 22 while being spaced apart from the light source member 24.

Although not shown in the drawing, the image sensor 26 is provided with an area for imaging infrared light on the surface, and the imaging area forms a state in which a plurality of pixels are aligned, and captures the shadow of the infrared light irradiated onto the imaging area as a displacement value. Calculate

That is, the image sensor 26 continuously photographs the shadows of the infrared rays irradiated on the plurality of pixels, and compares the photographed shadows to calculate the displacement of the shadows when a difference occurs in the compared values.

After the light source member 24 and the image sensor 26 are mounted on the substrate 22, a transparent encapsulant 28 is provided covering them. That is, the transparent encapsulant 28 is obtained by solidifying a liquid Clear EMC (Epoxy Molding Compound). The transparent encapsulant 28 adheres a pre-processed mold to the substrate 22, and then removes the liquid between the mold (not shown) and the substrate 22. It is molded by injecting EMC.

In addition, a blocking film 29 may be provided between the light source member 24 and the image sensor 26 to block infrared rays emitted from the light source member 24. The blocking layer 29 may be a black EMC that does not transmit infrared rays, and the tape or light source member 24 and the image sensor 26 that are not transmitted through the infrared rays may be inserted at the same time and closely adhere to the substrate 22. It can also be configured as a mask.

When the lower package 20 is manufactured in this way, the upper package 40 is stacked on the upper side of the lower package 20. Bonding of the lower package 20 and the upper package 40 may be combined after forming the projections 46a or the grooves 28a in the lower package 20 or the upper package 40, respectively, or using a separate double-sided tape. You may attach and join, respectively. Of course, although not described above, other forms of joining other than such joining methods are possible.

The upper package 40 includes an external light blocking material 46 for molding the illumination system 42 and the light guide system 44 to correspond to the light source member 24 and the image sensor 26 of the lower package 20.

The illumination system 42 may be configured to be inclined vertically or at an angle as a waveguide through which total reflection is performed. However, the arrangement of the illumination system 42 may be configured to be inclined at an angle from the vertical direction. This reason will be described later.

In addition, the optical guide system 44 may use an optical fiber in which no optical loss occurs from the start point to the end point of the infrared ray. The light guide system 44 may be composed of a core 44b and a clad 44c surrounding the core 44b.

The light guide system 44 includes, for example, a single core structure in which a clad 44c surrounds the core 44b and a plurality of cores 44b mounted on one clad 44c. It can be composed of a multi-core structure.

In the light guide system 44 of the present invention, any one of these two structures may be selectively applied.

First, when a fiber of a single-core structure is applied, several can be bundled and installed in a bundle form.

However, when a plurality of single core fibers are bundled and used, the space between the cores 44b is caused by the thickness of the cladding 44c surrounding the cores 44b, so that infrared rays passing through the cores 44b are limited. It is difficult to concentrate to the point, so the accuracy may be less.

In addition, since the fiber of the multi-core structure can accommodate a larger number of cores 44b in one clad 44c than the fiber of the single-core structure, there is an advantage of focusing infrared rays at one point rather than the single-core structure.

Therefore, the light guide system 44 of the present invention describes a fiber having a multi-core structure rather than a single core as an embodiment.

In the light guide system 44, when a multicore fiber is applied, a plurality of cores 44b may be located in each pixel of the image sensor 26. When the plurality of cores 44b are positioned in each pixel of the image sensor 26 in this way, it is possible to accurately capture the movement of the infrared rays irradiated through the light guide system 44.

In addition, the illumination system 42 and the light guide system 44 are molded through the external light blocking material 46 to block the inflow of external light. The external light shielding material 46 is formed by injecting a liquid material, also referred to as black EMC, into a previously processed mold so that the illumination system and the light guide system 44 are covered.

Here, a process such as polishing may be performed on the outer surface of the external light shielding material 46 so as to keep the surface smooth.

When the lower package 20 and the upper package 40 are bonded as described above, the subject P may contact the surface of the upper package 40. When the subject P contacts the upper package 40, the infrared rays emitted from the light source member 24 pass through the illumination system 42, and then are transmitted to the subject P.

In this case, when the subject P is the user's finger, infrared rays pass through the surface of the subject and proceed to the inside of the subject P, and are reflected downward while colliding with a substance such as blood or bone in the subject P.

The reflected infrared rays again pass through the surface of the subject P and enter the light guide system 44, and the infrared rays transmitted to the image sensor 26 are formed while passing through the light guide system 44.

Although not shown in the drawing, the image sensor 26 captures the received infrared rays, compares the captured image screen in real time, and calculates a displacement value as much as a difference occurs in the image screen. The calculated displacement value is transmitted to a microcomputer (not shown) of the mobile terminal, and the microcomputer forms a cursor on the display screen of the mobile terminal.

However, the position of the illumination system 42 may be very important in the process of transmitting the infrared rays of the light source member to the image sensor 26.

In other words, when the position of the illumination system 42 is disposed vertically, the center of the infrared rays is radiated to the outside, and only the ambient light causing total reflection proceeds to the axial direction of the light guide system 44 and then inside the subject P. As it is refracted downward, the infrared rays flowing into the light guide system 44 may be less, thereby degrading the operating performance.

In order to compensate for such a problem, the power consumption of the light source member 24 may be increased to increase the intensity of infrared rays, but it is very inefficient because of the large power consumption.

Therefore, when the illumination system 42 is inclined so that almost all of the infrared rays emitted from the light source member 24 can be introduced into the light guide system 44, the light guide system 44 is vertically disposed to effectively compensate for the problem caused by the light guide system 44. You can do it.

Meanwhile, the optical joystick 100 configured by stacking the lower package 20 and the upper package 40 has a precondition that the subject P may be transmitted. This precondition may be limited to the case in which the subject P is the user's finger. When the user wears a heat insulating member such as a glove on the subject P, infrared rays may not penetrate the heat insulating member. .

In order to solve this problem, when a predetermined distance is formed between the illumination system 42 and the light guide system 44 and the subject P in close contact with the illumination system, the infrared rays passing through the illumination system 42 are guided by the light guide system 44. As it can be introduced into the above problem can be solved.

Therefore, the present invention proposes a housing 50 that accommodates the upper package 40 and the lower package 20 therein while providing a space between the subject 9 and the upper package 40.

The housing 50 is composed of a transmission zone 52 and a non-transmission zone 54 in which infrared rays of the light source member 24 are transmitted while the subject P is in direct contact.

The transmission zone 52 may have a flat plate shape and may be manufactured in a form in which an infrared pass layer 52a is provided in an optical plastic, transparent glass, or transparent plastic through which infrared rays are transmitted.

In this case, when the transmission zone 52 is made of transparent glass or transparent plastic, the light guide system 44 may further include a filter 44a for blocking the inflow of light other than the infrared wavelength band.

The filter 44a may be a coating material formed on any one of an upper surface, a bottom surface, and a front surface of the light guide system 44, and may also be formed of a tape formed on any one of the top surface, the bottom surface, and the front surface of the light guide system 44. have.

The non-transmissive zone 54 serves to protect the outer surface of the upper and lower packages 40 and 20 while supporting the transmission zone 52.

When the subject P contacts the transmission zone 52 while the housing 50 is installed in the upper and lower packages 40 and 20, the infrared rays are totally reflected while the infrared rays pass through the illumination system 42, and the totally reflected infrared rays are exposed to the subject ( P) is reflected from the surface and then enters the light guide system 44.

That is, when a thermal insulation member such as a glove is worn on the subject P, since an interval equal to the thickness of the transmission zone 52 is secured between the upper portion of the illumination system 42 and the subject P, infrared rays that hit the subject P are exposed. It can be introduced into the light guide system 44 while being refracted.

Therefore, even if the subject P is in direct contact with the transmission zone 52 or wears the insulating member, infrared rays may eventually enter the light guide system 44.

In addition, any one of the boss or the gasket 60 may be further provided between the upper package 40 and the lower package 20 to adjust the height of the upper package 40. In the present invention, it is shown in the figure with the gasket 60 applied.

In other words, the combined height of the upper package 40 and the lower package 20 is manufactured as slim as possible for the purpose of ultra-slim, but unlike this purpose if the upper package 40 is configured to a height higher than the combined height The boss or gasket 60 may be installed between the lower package 20 and the lower package 20.

Meanwhile, in another embodiment of the present invention, the optical joystick 100 divided into the upper package 40 and the lower package 20 may also be manufactured as a single body.

In another embodiment of the present invention, the light joystick 100 includes a light source member 24 and an image sensor 26 mounted on a substrate 22 and an illumination system 42 to correspond to the light source member 24 and the image sensor 26. And after arranging the light guide system 44, it can be configured by filling the external light shielding material 46 to surround them all.

In more detail, after the light source member 24 and the image sensor 26 are mounted on the substrate 22 through a process such as SMT, the lighting system 24 may correspond to the light source member 24 and the image sensor 26. 42 and the light guide system 44 are arranged.

Subsequently, when the pre-processed molds are brought into close contact with each other to cover them, and the liquid external light shielding material 46 is filled in the mold, the external light shielding material 46 becomes solid and forms the overall appearance.

Here, the light guide system 44 may be a green index lens and may also be used as an exit convex lens.

In addition, the illumination system 42 may be installed in a vertical or horizontal direction.

In addition, the external light shielding material 46 may be a black epoxy molding compound (EMC).

After the overall appearance is configured through the external light blocking material 46, the housing 50, which is divided into the transmission zone 52 and the non-transmission zone 54 having the subject P contact surface, is coupled. The housing 50 may provide a space between the subject P and the upper surface of the external light blocking material 46.

Therefore, even if a thermal insulation member such as a glove is worn on the subject P, the infrared rays emitted from the light source member 24 hit the surface of the subject P through the illumination system 42, and then enter the light guide system 44. Infrared rays are transmitted to the image sensor 26.

8 to 11 show another embodiment of the light guide system among the components of the optical joystick of the present invention.

Referring to the drawings, the light guide system 44 of the illumination system 42 and the light guide system 44 constituting the upper package 40, a green lens for forming an infrared image on any one of the upper surface or the bottom surface (Gradient Index Lens) 80 may be further provided.

The green lens 80 is for imaging an infrared ray, and the infrared ray emitted from the illumination system 42 hits the surface of the subject P and is then vertically reflected to capture the image of the image sensor 26 in a state where infrared rays are collected. It is provided to reach the area.

When the green lens 80 is installed on the bottom surface of the light guide system 44, the lower end of the green lens 80 maintains the same plane as the bottom surface of the upper package 40. On the contrary, the green lens 80 may be installed on the top surface of the light guide system 44. In this case, the transmission zone 52 may be installed in close contact with the bottom surface.

In addition, in FIG. 10, the green lens 80 is applied to the upper surface of the light guide system 44 of the optical joystick in which the upper package 40 and the lower package 20 are integrally formed.

As shown in the drawing, the green lens 80 is disposed between the upper surface of the light guide system 44 and the transmission zone 52 so that the light guide system 44 forms an image of infrared rays hit by the object P and reflected. ).

In addition, in FIG. 11, an installation hole 20a through which the light guide system 44 is fitted is formed on the image sensor 26 of the lower package, and a lower end of the light guide system 44 is fitted into the installation hole 20a. have. Here, the illumination system 42 may also be fitted and fixed in the installation hole 20a previously formed in the lower package 20.

When the lower end of the illumination system 42 and the light guide system 44 is inserted into the installation hole 20a, and then the upper package 40 is manufactured by the external light shielding material 46, the illumination system 42 or the light guide system ( 44 can maintain a very stable state of engagement with the center of the light source member 24 and the image sensor 26, it is possible to more accurately detect the movement of the subject (P).

In FIG. 12, the light source member 24 and the image sensor 26 are installed on the substrate 22, and the light guide system 44 is installed above the image sensor 26, and then the image sensor 26 and the light guide system ( 44 shows the molding configuration using the external light shielding material 46.

In this embodiment of the present invention, the infrared light emitted from the light source member 24 directly passes through the transmission zone 52 of the housing without hitting the illumination system 42 and hits the subject P, and then the light guide system 44. In the illustrated embodiment.

In this way, if the infrared light emitted from the light source member 24 does not pass through the illumination system 42 and exits to the transmission zone 52 as it is, manufacturing cost may be saved because the illumination system 42 does not need to be manufactured separately.

13 and 14 illustrate a structure in which the flexible substrate 70 is connected to one side of the substrate 22 and the light source member 24 is connected to the end of the flexible substrate 70.

In FIG. 13, the light source member 24 is connected through the flexible substrate 70 to emit infrared rays toward the transmission zone 52. At this time, the tip of the light source member 24 is mounted on the edge of the external light shielding material 46 to maintain a stable installation state.

In FIG. 14, the light source member 24 is installed at the end of the flexible substrate 70 connected to the substrate 22, and the flexible substrate 70 is in close contact with the inner wall of the non-transmissive zone 54. It is shown that the infrared rays of the light emitted toward the upper portion of the light guide system 44.

As described above, all of the light source members 24 illustrated in FIGS. 13 and 14 are connected through the flexible substrate 70 to irradiate infrared rays toward the transmission zone 52.

Therefore, when the infrared light of the light source member 24 is emitted from the position adjacent to the light guide system 44, the infrared light may be emitted toward the transmission zone 52 in a relatively focused state even though the illumination system 42 is not provided separately.

On the other hand, Figure 15 shows a flow chart showing a process of assembling the optical joystick of the present invention manufactured by the upper package 40 and the lower package 20, respectively.

According to the illustrated sequence, the light source member 24 and the image sensor 26 are respectively installed in the SMT process at positions spaced apart from the substrate 22 by a predetermined distance.

After they are installed on the substrate 22, the mold (not shown) that has been processed is brought into close contact with the substrate 22, and then the liquid transparent encapsulant 28 is injected into the mold to manufacture the lower package 20.

After the lower package 20 is manufactured, the upper package 40 formed by molding the illumination system 42 and the light guide system 44 with the external light blocking material 46 to correspond to the light source member 24 and the image sensor 26. To prepare.

At this time, the upper package 40 and the lower package 20 is formed with a projection (46a) or groove (28a) on the surface facing each other so that accurate coupling can be made.

After the upper package 40 and the lower package 20 are manufactured and laminated, the housing is configured to include the transmission zone 52 and the non-transmission zone 54 and accommodate the upper package 40 and the lower package 20. 50) are combined.

In addition, Figure 16 is a flow chart showing a process of integrally manufacturing the light joy of the present invention.

According to the illustrated order, the light source member 24 and the image sensor 26 are mounted on the substrate 22 in an SMT process at positions spaced apart from each other.

After the light source member 24 and the image sensor 26 are mounted, the illumination system 42 and the light guide system 44 are tightly fixed to correspond to them, and then a pre-processed mold (not shown) is attached to the substrate 22. Close contact with.

After the mold is in close contact, the liquid external light shielding material 46 is injected into the mold and solidified.

After the liquid external light shielding material 46 is solidified in the mold, the housing 50 including the transmission zone 52 and the non-transmission zone 54 is coupled.

As such, the optical joystick 100 of the present invention may be assembled and divided into an upper package 40 and a lower package 20, or may be manufactured integrally without being divided into an upper package 40 and a lower package 20. have.

In addition, when the housing 50 is used in combination with the optical joystick manufactured in the above two forms, a space for refraction of infrared rays between the subject P, the illumination system 42, and the imaging member 44 may be secured. Even if a thermal insulation member such as a glove is worn on the subject P, the deterioration of the operating performance is not generated.

Although the optical joystick and the manufacturing method thereof according to the embodiment of the present invention have been described above, the present invention is not limited thereto, and those skilled in the art can of course apply and modify them.

1 is a schematic cross-sectional view showing the operation principle of a conventional optical joystick.

2 is an exploded view showing an optical joystick according to an embodiment of the present invention.

3 is a cross-sectional view showing an optical joystick according to an embodiment of the present invention.

Figure 4 is a cross-sectional view showing a state in which the housing is coupled to the optical joystick according to an embodiment of the present invention.

5 is a cross-sectional view of an operation state of the optical joystick according to the embodiment of the present invention.

6 is a cross-sectional view showing another embodiment of the optical joystick according to the embodiment of the present invention.

Figure 7 is another embodiment showing a state in which the housing is coupled to the optical joystick according to an embodiment of the present invention.

8 is a sectional view showing another embodiment of an optical joystick according to an embodiment of the present invention.

9 is a cross-sectional view showing yet another embodiment of an optical joystick according to an embodiment of the present invention.

10 is a cross-sectional view showing another embodiment of the optical joystick according to the embodiment of the present invention.

11 is a cross-sectional view showing another embodiment of an optical joystick according to an embodiment of the present invention.

12 is a sectional view showing yet another embodiment of an optical joystick according to an embodiment of the present invention.

13 is a sectional view showing another embodiment of an optical joystick according to an embodiment of the present invention.

14 is a sectional view showing another embodiment of the optical joystick according to the embodiment of the present invention.

15 is a flowchart illustrating a process of manufacturing an optical joystick according to an embodiment of the present invention.

16 is a flow chart showing a process in which another embodiment of the optical joystick according to an embodiment of the present invention is manufactured.

<Explanation of symbols for each major part of drawing>

20: lower package 22: substrate

24: light source member 26: image sensor

28: transparent encapsulant 29: barrier film

40: upper package 42: lighting system

44: light guide system 44a: filter

44b: core 44c: clad

46: external light shielding material 50: housing

52: transmission zone 52a: infrared path layer

54: non-transmissive zone 60: gasket

70: flexible substrate 100: optical joystick

P: Subject

Claims (34)

A lower package including a light source member mounted on a substrate and an image sensor molded through a transparent encapsulant; An upper package in which an illumination system and a light guide system are molded through an external light blocking material so as to correspond to the light source member and the image sensor of the lower package; Optical joystick comprising a. The method of claim 1, The lower package and the upper package is an optical joystick, characterized in that accommodated inside the housing provided with the object contact surface. 3. The method of claim 2, The housing is a light joystick, characterized in that consisting of a transmission zone through which the infrared ray of the light source member is transmitted and a non-transmissive zone that is not transmitted. The method of claim 1, The illumination system of claim 1, wherein the illumination system is configured to be molded vertically or inclined. The method of claim 4, wherein The illumination system is a light joystick, characterized in that the coating material is coated with a high reflectance on the inner surface or the outer surface so that the infrared ray of the light source member is made a total reflection. The method of claim 1, Light joystick, characterized in that between the light source member and the image sensor is provided with a blocking film for blocking the light source emitted from the light source member. The method of claim 6, The blocking film is a black joystick, characterized in that the black (Black) EMC. The method of claim 6, The blocking film is a light joystick, characterized in that the tape (Tape). The method of claim 6, The blocking film is a light joystick, characterized in that the light source member and the image sensor is fitted at the same time in close contact with the substrate. The method of claim 1, An optical joystick is further provided between the lower package and the upper package any one of a boss or a gasket for adjusting the height of the upper package. The method of claim 1, The light guide system is an optical joystick, characterized in that the fiber (Fiber). The method according to claim 1 or 11, wherein The light guide system is characterized in that the light joystick further comprises a filter for blocking the inflow of light outside the infrared wavelength band. The method of claim 12, The filter is an optical joystick, characterized in that the coating material configured on any one of the top, bottom, front surface of the light guide system. The method of claim 12, The filter is a light joystick, characterized in that the tape (Tape) configured on any one of the top, bottom, front surface of the light guide system. The method of claim 1, The external light shielding material is a black joystick, characterized in that the black (Black) EMC. The method of claim 11, The optical guide system comprises a multi-core core and a clad for accommodating the multi-core core therein. The method of claim 1, The optical guide system is a light joystick, characterized in that the single core and the clad to accommodate the single core therein is composed of a plurality of bundles. The method of claim 1, The upper package is an optical joystick, characterized in that the green lens further comprises an infrared image forming on any one of the top or bottom surface of the light guide system. The method of claim 1, The lower package has an optical joystick, characterized in that the mounting hole is fitted to the light guide system and the light guide system of the upper package is formed. The illumination system and the light guide system are in close contact with each other to correspond to the light source member and the image sensor mounted on the substrate, the light joystick is characterized in that the external light shielding material is filled and molded to surround them. The method of claim 20, The lower package and the upper package is an optical joystick, characterized in that accommodated inside the housing provided with the object contact surface. The method of claim 21, The housing is a light joystick, characterized in that consisting of a transmission zone through which the infrared ray of the light source member is transmitted and a non-transmissive zone that is not transmitted. The method of claim 20, The light guide system is an optical joystick, characterized in that the fiber (Fiber). The method of claim 20, The external light shielding material is a black joystick, characterized in that the black (Black) EMC. The method of claim 20, The illumination system of claim 1, wherein the illumination system is configured to be molded vertically or inclined. The method of claim 20, The light guide system is an optical joystick, characterized in that the image sensor and the bottom is in close contact, the top of the green lens to form an infrared image. A light source member and an image sensor mounted on the substrate; A light guide system installed in close contact with the surface of the image sensor; An external light shielding material molded to block inflow of external light into the image sensor and the light guide system; And A housing accommodating the light source member and the external light shielding material therein; Optical joystick, characterized in that provided including. 28. The method of claim 27, The housing is an optical joystick, characterized in that consisting of a transmission zone through which the infrared ray of the light source member is transmitted, and a non-transmission zone coupled to support the transmission zone. An image sensor mounted on a substrate; A light guide system installed adjacent to the surface of the image sensor; An external light shielding material molded to block inflow of external light into the image sensor and the light guide system; A housing accommodating the light source member and the external light shielding material therein and contacting a subject; And An illumination system connected to the substrate and the flexible substrate and emitting infrared light toward a housing at a position adjacent to an upper end of the external light blocking material; Optical joystick, characterized in that provided including. The method of claim 29, The housing is a light joystick, characterized in that consisting of a transmission zone through which the infrared ray of the light source member is transmitted, and a non-transmission zone supporting the transmission zone. Mounting a light source member and an image sensor on the substrate; Manufacturing the lower package by molding the light source member and the image sensor with a transparent encapsulant and a blocking film; Manufacturing an upper package by molding an illumination system and a light guide system with an external light shielding material so as to correspond to the light source member and the image sensor; Optical joystick manufacturing method comprising a. The method of claim 31, wherein Coupling a housing composed of a transmission zone and a non-transmission zone to surround the upper package and the lower package; Optical joystick manufacturing method comprising a further. Mounting a light source member and an image sensor on the substrate; Closely contacting an illumination system and a light guide system so as to correspond to the light source member and the image sensor; Filling and molding an external light shielding material after the light source member, the image sensor, the illumination system, and the light guide system are in close contact with each other; Optical joystick manufacturing method comprising a. The method of claim 33, Coupling a housing including a transmission zone and a non-transmission zone after the external light blocking material is molded; Optical joystick manufacturing method comprising a further.

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