Optical finger navigation packaging structure

Abstract

The utility model discloses an optical finger navigation packaging structure which comprises a bottom plate, a light emitting diode and a photosensitive image chip are installed on the bottom plate, a light shielding body is installed on the bottom plate, a lens is installed on the light shielding body, a panel is covered on the lens, the panel is made of light-transmitting materials, and the light-transmitting materials are made of light-transmitting materials. A first mounting cavity and a second mounting cavity are formed in the shading body, the light-emitting diode is located in the first mounting cavity, the photosensitive image chip is located in the second mounting cavity, the finger is placed on the panel, and light emitted by the light-emitting diode can be reflected by the finger through the lens and the panel and then gathered to the photosensitive image chip through the panel and the lens. The structure can realize optical finger navigation, and is small in packaging size, simple to process and rapid to assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to a semiconductor packaging technical field, concretely relates to an optical hand navigation packaging structure. BACKGROUND

[0002] Nowadays, semiconductor technology develops rapidly, and semiconductor products penetrate into various industries and expand in new fields, especially in the optical field in recent years. The common photoelectric mouse completely replaces the traditional mechanical roller mouse, and the optical hand navigation (OFN) gradually replaces the traditional mechanical remote sensing. The optical hand navigation is constantly improved in chip technology, and the chip packaging technology also needs to be constantly improved.

[0003] The traditional hand navigation controls four different directions through mechanical keys. This control can only be controlled in a specific interface, and can only move one grid at a time, so the application environment is very limited.

[0004] The trackball is used in the common hand navigation, which drives the rollers below the ball body by rolling the ball body. This is very similar to our early mouse, but operating the trackball with fingers will become sluggish, and the structure is relatively complex, easy to get dust, and inconvenient to clean.

[0005] The common photoelectric mouse assembly structure cannot be navigated by fingers.

[0006] In summary, the mechanical key can only be applied in special occasions and cannot be moved in any direction. The trackball structure is complex, and four rollers are needed inside to assist, and other chips are needed to calculate the moving track. The existing photoelectric mouse structure cannot be operated by fingers. INVENTION CONTENTS

[0007] In view of the defects in the prior art, the utility model provides an optical hand navigation packaging structure, which can realize optical hand navigation, has small packaging volume, is simple to process, and is fast to assemble.

[0008] An optical hand navigation packaging structure, comprising a bottom plate, a light emitting diode and a photosensitive image chip are installed on the bottom plate, a light shielding body is installed on the bottom plate, a lens is installed on the light shielding body, a panel is covered on the lens, the panel is made of light transmission material, the light shielding body has a mounting cavity one and a mounting cavity two, the light emitting diode is located in the mounting cavity one, the photosensitive image chip is located in the mounting cavity two, a finger is placed on the panel, the light emitted by the light emitting diode can be reflected by the finger through the lens and the panel and then gathered to the photosensitive image chip through the panel and the lens.

[0009] Preferably, the mounting cavity one is open at the top, the bottom wall of the lens has a lower convex part, and the lower convex part enters the mounting cavity one.

[0010] Preferably, the installation cavity two top wall is provided with a through hole.

[0011] Preferably, the lens is provided with a lens ball head, the lens ball head top is embedded into the panel, and the lens ball head bottom enters the through hole.

[0012] Preferably, the light emitting diode and the photosensitive image chip are die-bonded on the bottom plate.

[0013] The beneficial effects of the utility model lie in: in the technical scheme, the light emitting diode and the photosensitive image chip are installed on the bottom plate, and the light shielding body is arranged, the light shielding body prevents the light emitting of the light emitting diode from directly scattering on the photosensitive image chip, and simultaneously can prevent external light from irradiating on the photosensitive image chip. When being used specifically, the finger is located on the panel, the light emitted by the light emitting diode can be reflected by the finger through the lens and the panel and then is gathered to the photosensitive image chip through the panel and the lens, so that the finger moves on the panel, and the photosensitive image chip can calculate the motion trajectory through the change of image, so that the hand guiding effect is achieved, and the structure package volume is small, processing is simple, and assembly is fast. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0015] Figure 1 It is a side view of the utility model.

[0016] In the drawings, 1 is a bottom plate, 2 is a light emitting diode, 3 is a photosensitive image chip, 4 is a light shielding body, 5 is a lens, 6 is a panel, 7 is an installation cavity one, 8 is an installation cavity two, 9 is a lower convex part, 10 is a through hole, and 11 is a lens ball head. DETAILED DESCRIPTION

[0017] The following will combine the drawings to describe the embodiment of the technical scheme of the utility model in detail. The following embodiment is only used to more clearly illustrate the technical scheme of the utility model, so only as an example, and cannot limit the protection scope of the utility model.

[0018] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meaning understood by the technical personnel in the field to which the utility model belongs.

[0019] Embodiment 1

[0020] As Figure 1As shown, the embodiment provides an optical hand guiding navigation package structure, which comprises a bottom plate 1, a light emitting diode 2 and a photosensitive image chip 3 are installed on the bottom plate 1, a light shielding body 4 is installed on the bottom plate 1, a lens 5 is installed on the light shielding body 4, a panel 6 is covered on the lens 5, the panel 6 is made of light-transmitting material, the light shielding body 4 has a mounting cavity one 7 and a mounting cavity two 8, the light emitting diode 2 is located in the mounting cavity one 7, the photosensitive image chip 3 is located in the mounting cavity two 8, a finger is placed on the panel 6, the light emitted by the light emitting diode 2 can be reflected by the finger through the lens 5 and the panel 6 and then gathered to the photosensitive image chip 3 through the panel 6 and the lens 5.

[0021] In the embodiment, the mounting cavity one 7 is open at the top, the bottom wall of the lens 5 has a lower convex part 9 which enters the mounting cavity one 7. In the embodiment, the top wall of the mounting cavity two 8 is provided with a through hole.

[0022] In the embodiment, the lens 5 is provided with a lens ball head part 11, the top of the lens ball head part 11 is embedded in the panel 6, and the bottom of the lens ball head part 11 enters the through hole 10.

[0023] In the embodiment, the light emitted by the light emitting diode 2 is sent to the finger part through the lower convex part 9, the lens 5 and the panel 6, and then gathered to the photosensitive image chip 3 through the panel 6 and the lens ball head part 11.

[0024] In the embodiment, the light emitting diode 2 and the photosensitive image chip 3 are die-bonded on the bottom plate 1.

[0025] In the embodiment, the light emitting diode 2 and the photosensitive image chip 3 are installed on the bottom plate 1, and the light shielding body 4 is arranged, which can prevent the light emitted by the light emitting diode 2 from directly scattering to the photosensitive image chip 3 and can also prevent external light from shining on the photosensitive image chip 3. In use, the finger is placed on the panel 6, the light emitted by the light emitting diode 2 can be reflected by the finger through the lens 5 and the panel 6 and then gathered to the photosensitive image chip 3 through the panel 6 and the lens 5, so that when the finger moves on the panel 6, the motion trajectory can be calculated through the change of the image of the photosensitive image chip 3, thereby achieving the effect of hand guiding navigation. The structure has small package size, simple processing and fast assembly.

[0026] In the embodiment, the light emitting diode 2 and the photosensitive image chip 3 are electrically connected with the bottom plate 1, and the bottom plate 1 can be installed on a PCB board for use. The pins for connecting the bottom plate 1 with the PCB board are located at the bottom wall of the bottom plate 1, so that the bottom plate 1 can be attached in a normal way or a reverse way. The normal way means that the light path is upward, and the reverse way means that the light path is downward.

[0027] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. An optical hand guidance package structure, characterized by, The application relates to a light-emitting diode (2) and a photosensitive image chip (3) are installed on a bottom plate (1), a light-shielding body (4) is installed on the bottom plate (1), a lens (5) is installed on the light-shielding body (4), a panel (6) is covered on the lens (5), the panel (6) is made of a light-transmitting material, the light-shielding body (4) is provided with an installation cavity I (7) and an installation cavity II (8), the light-emitting diode (2) is located in the installation cavity I (7), the photosensitive image chip (3) is located in the installation cavity II (8), a finger is placed on the panel (6), light emitted by the light-emitting diode (2) can be reflected by the finger through the lens (5) and the panel (6) and then gathered on the photosensitive image chip (3) through the panel (6) and the lens (5).

2. The optical hand guidance package structure according to claim 1, wherein The installation cavity I (7) is open at the top, a lower convex part (9) is arranged on the bottom wall of the lens (5) and enters the installation cavity I (7).

3. The optical hand guidance package structure according to claim 1, wherein A through hole is formed in the top wall of the installation cavity II (8).

4. An optical hand guidance package structure according to claim 3, wherein A lens ball head (11) is arranged on the lens (5), the lens ball head (11) is embedded in the panel (6) at the top, and the lens ball head (11) enters the through hole (10) at the bottom.

5. The optical hand guidance package structure according to claim 1, wherein The light-emitting diode (2) and the photosensitive image chip (3) are fixed to the bottom plate (1).

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