TW201239685A - RF signal transmission module applied to wireless optical mouse - Google Patents

Abstract

A RF signal transmission module applied to a wireless optical mouse is provided. The RF signal transmission module includes a plurality of electric conducting points; a substrate having a layout pattern including a plurality of traces respectively connected to the electric conducting points, a matching circuit and an antenna; a light sensing circuit die adhered on the substrate capable of receiving a reflected light beam and generating a calculating result; a wireless transmission circuit die adhered on the substrate capable of using the antenna to radiate a position signal in response to the calculating result.

Description

201239685

i w /Joy^AMY VI. Description of the Invention: [Technical Field] The present invention relates to a wireless optical mouse, and more particularly to a wireless transmission module in a wireless optical mouse. [Prior Art] Please refer to the first (a), first (b) and first (c) drawings, which are schematic diagrams of related components of a conventional wireless optical mouse. A main circuit board 1A and a sub-board 12A, and a battery holder 152 are included in the housing 105 of the wireless optical mouse. A battery can be placed in the battery holder 152 so that the wireless optical mouse operates according to the power provided by the battery. Furthermore, the main circuit board 100 includes an optical sensing circuit 11 (), a light source 130, a light conducting unit 140, a roller 15A, a first button 162, and a second button 164. Furthermore, the sub-board 12 includes a radio frequency transmission control circuit 122 and an antenna 124. The radio frequency transmission control circuit 122 can be electrically connected to the light sensing circuit 11G, the light source 13Q, the wheel 15Q, the first button 162, and the second by using the main circuit board 1 〇〇 and the wiring on the sub-board 120. Button 164 and antenna 124. The antenna on the sub-board 12 is also fabricated using wiring. / The module formed by the neutron circuit board 12G is called an RF transmission module. That is, when the user operates the roller 150, the first button 162, and the second button (10), the (four) transmission control circuit 122 can generate an action signal to be radiated to the host (not shown) via the antenna m. Furthermore, the RF transmission control circuit can also control the light source 130, 201239685,

1 w / JoyrAivIY For example, a light-emitting diode, the emitted light 132 is conducted via the light-conducting unit 140 to the surface 放置 9 放置 where the mouse is placed and reflected back to the light-sensing circuit 11 〇 so that the light-sensing circuit 110 can achieve optical positioning. Therefore, when the user moves the mouse, the light sensing circuit 110 can provide the calculation result of the optical positioning to the radio frequency transmission control circuit 122, and the radio frequency transmission control circuit 122 can generate the position signal to be radiated to the host via the antenna 124 (not drawn Show). As shown in the first (c) diagram, the sub-board 120 and the main circuit board 100 are stacked on each other' and the optical sensing circuit 110 is located on the main circuit board 1 , and the corresponding position on the circuit board 100 has an opening. The light ray 132 is reflected and transmitted to the light sensing circuit 110 via the light conducting unit 140 and the opening of the main circuit board 1 再次 again. When the wireless optical mouse moves, the optical sensing circuit 11 provides the calculation result of the optical positioning to the wireless transmission module where the sub-board 120 is located, and the wireless transmission module can generate the position signal to radiate the wireless optical mouse. . For cost considerations, the optical sensing circuit on the wireless optical mouse utilizes a cheaper dual in-line package (Dual In line Package) (hereinafter referred to as DIP package). Meanwhile, the main circuit board 10 is also provided with a dip package. Pins 'and according to the design of the wiring on the main board 1 。. Furthermore, the wireless transmission module of the conventional wireless optical mouse is fabricated on another sub-board 120. Since the antenna 124 is directly designed on the sub-board 120, in order to be matched with the antenna, the conventional RF transmission control circuit 122 is generally a quad flat no-lead package Quad Flat No leads (hereinafter referred to as a QFN package), a square flat package. (Quad Flat Package, hereinafter referred to as QFP package) or thin flat package (L〇w_profiie Qua(j

Hat Package, hereinafter referred to as LQFP package). As we all know, using qfn 4

201239685 1 W/iOy^AMY package or circuit made by QFP package. If the 传 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The foot and the sub-circuit board 120 on the day, line 124 achieve electrical Λ, and this foot will cause excessive parasitic inductance, and affect the antenna, vibration frequency and radiation efficiency. SUMMARY OF THE INVENTION The present invention provides a wireless optical mouse wireless transmission module, which comprises a plurality of conductive contacts; a substrate, a circuit layout envelope on the substrate = several wiring lines, - with the circuit and An antenna, the wire of the wire is connected to the corresponding conductive contacts; a light sensing circuit is adhered to the substrate to receive a reflected light and to perform an optical setting, and Outputting a calculation result of the optical positioning; and a wireless transmission circuit die is adhered to the substrate and connected to the antenna such that the antenna radiates a position signal corresponding to the calculation result. The invention further provides a wireless transmission mode of a wireless optical mouse, comprising: a plurality of conductive contacts; a substrate, wherein a circuit layout on the substrate comprises a plurality of wiring lines, wherein the wiring lines are electrically connected to corresponding ones The conductive contacts; a light sensing circuit die attached to the substrate, capable of receiving a reflected light and performing an optical positioning, and outputting a calculation result of the optical positioning; an antenna; and, a wireless The transmission circuit die is adhered to the substrate and is connected to the antenna such that the antenna emits a set of signals corresponding to the calculation result. In order to better understand the above and other aspects of the present invention, the following 201239685 · *

The preferred embodiment of the lW736yHAMY is described in detail with reference to the following drawings: [Embodiment] Since the optical sensing circuit of the wireless optical mouse is manufactured by using a DIP package, the pin of the DIP package is too long. If the parasitic inductance is too large, it will affect the antenna resonance frequency and radiation efficiency. It is not applicable to the package of the RF transmission control circuit. Accordingly, the present invention provides a wireless transmission module in a wireless optical mouse. In the first embodiment of the present invention, the wireless transmission module includes a light sensing circuit die fixed on a substrate, a control circuit die, and a radio frequency transmission control circuit die, and the substrate is further designed. Antenna and matching circuit. According to the first embodiment of the present invention, the wireless transmission module uses a Chip On Board (hereinafter referred to as COB technology) on a substrate including an antenna and a matching circuit to form a light sensing circuit die and a control circuit. The granules and the RF transmission control circuit die are adhered to the substrate, and the electrical connection is made by using a bonding wire, and then the die and the wire are sealed, and the pin can be electrically connected to the main circuit board. The connection, that is, the wireless transmission module of the present invention is completed. In the second embodiment of the present invention, the wireless transmission module includes a photo-sensing circuit die and a radio frequency transmission control circuit crystal grain fixed on a substrate, and an antenna and matching circuit are further designed on the substrate. According to the first embodiment of the present invention, the wireless transmission module uses the chip on-board technology (Chip On Board, hereinafter referred to as c〇B technology) on the substrate including the antenna and the matching circuit, and the optical sensing circuit die and the radio frequency transmission control circuit. The die is adhered to the substrate' and the electrical connection is made by a bonding wire, followed by the crystal 6

201239685 i w ooymivlY particles and wires are sealed and connected to the main circuit by pins, that is, the wireless transmission module of the present invention is completed. Anti-power-on, of course, in other various embodiments of the present invention, < outside the substrate, and in addition to the COB technology, the QFN package, the QFP package, or the 1 卯 package may be used. All of the E-synthesis-single-wireless transmission modules. Therefore, the greenless transmission of the present invention: = is more suitable for radiation of high frequency signals. The various embodiments of the present invention are described in detail below. For example, the green transmission is referred to the second (4) and the second (_, the green diagram is the schematic diagram of the wireless transmission module of the first embodiment of the invention. The wireless transmission module 3 (10) includes the substrate 200. The circuit layout of the substrate 200 The antenna module 2 includes a matching circuit 250. Further, the wireless transmission module 3 further includes a light sensing die 220, a control circuit die 21, a RF transmission circuit die, and a plurality of pins. 240, and the substrate 200 is also electrically connected to the corresponding pin 240. As shown in the second (a) diagram, the optical sensing circuit die 220, the control circuit die 21, and the The RF transmission circuit die 23 is adhered to the substrate 200 of the completed circuit layout, and electrically connects the pin 240 to the corresponding wiring line. Then 'connect the wire to the pin 240 by using wire bond technology. Corresponding wiring lines, optical sensing circuit dies 22, control circuit dies 210, and RF transmission circuit dies 23 , are electrically connected, and the RF transmission circuit dies 230 are also connected by wires to match Circuit 250 Finally, the optical sensing circuit die 220, the control circuit die 21〇, 201239685

The i w /joy^AMY and the RF transmission circuit die 230 and all the wires are sealed to complete the wireless transmission module of the invention. Obviously, the present invention utilizes the method of wiring the substrate 200 to design the antenna 260 and its matching circuit 250 without performing a sealing process, thereby reducing the problem of the antenna resonance frequency shift and the deterioration of the radiation efficiency. Moreover, since the RF transmission circuit die 230 is connected to the matching circuit 250 by wires, the distance from the RF transmission circuit die 230 to the antenna circuit can be shortened to reduce parasitic inductance. As shown in the second (b) diagram, since the plurality of pins 240 are perpendicular to the substrate 200, the plurality of pins 240 can be electrically connected to the main optical board of the wireless optical mouse. In other words, since the pin of the wireless transmission module 300 can be directly mounted on the main circuit board of the wireless optical mouse, there is no need to additionally add a sub-board. Moreover, since the wireless transmission module 300 is manufactured using COB technology, the manufacturing cost of the wireless optical mouse is effectively reduced and the manufacturing procedure of the wireless optical mouse is greatly simplified. Please refer to the third figure, which is a schematic diagram showing the connection relationship between the wireless transmission module of the first embodiment of the present invention and the main circuit board of the wireless optical mouse. A wireless transmission module 300, a light source 330, a light conducting unit 340, a scroll wheel 350, a first button 362, and a second button 364 are included on the main optical circuit board 320 of the wireless optical mouse. The wireless transmission module 300, as shown in the second (a) diagram, includes an optical sensing die, a control circuit die, and a wireless transmission circuit die. Moreover, the roller 350, the first button 362, and the second button 364 can be electrically connected to the control circuit die by using the wiring on the main circuit board 320. When the user operates the scroll wheel 350, the first button 362, and the second button 364, the control circuit die can output an action signal via the wireless 201239685.

丄 w /joyrAivlY The transmission circuit die and the antenna radiate the action signal to the host. Furthermore, the control circuit die can also control the light source 330, such as a light-emitting diode, and the emitted light is transmitted to the surface on which the mouse is placed via the light-conducting unit 340 and reflected back to the light-sensing circuit die, so that the light-sensing circuit die can be realized. Optical positioning. Therefore, when the user moves the mouse, the optical sensing circuit die can provide the calculation result of the optical positioning to the control circuit die, and the control circuit die can generate the position signal, and the wireless transmission circuit die and the antenna are The position signal can be radiated to the host. According to the embodiment of the present invention, the wireless transmission module 300 of the present invention uses the COB technology to package the control circuit die, the wireless transmission circuit die and the optical sensing circuit die, and combines the substrate of the antenna design to achieve manufacturing cost and high frequency. The wireless transmission module 300 can be balanced. Moreover, since the wireless transmission module 300 of the present invention has a plurality of pins, the main circuit board 320 can also be designed with a line layout conforming to the DIP package. It will be apparent that the antenna of the present invention has been designed for use on the wireless transmission module 300, so that the layout of the antenna is not required to be otherwise designed on the main circuit board 320. Because if the antenna is forcibly designed on the main circuit board 320, since the light source 330 and the light-conducting unit 340 already occupy a specific position, the antenna can only be designed at the end of the main circuit board 320, that is, the area 322 before the light source 330, thus causing In addition to the poor radiation efficiency of the antenna, the user's hand also affects the radiation field pattern and direction of the antenna, increasing the difficulty of designing the antenna. In other words, the present invention can obtain a wireless optical mouse product which is inexpensive to manufacture without affecting the antenna resonance frequency, radiation efficiency, and the like. Please refer to the fourth figure, which is a schematic diagram of a wireless transmission module according to a second embodiment of the present invention. The wireless transmission module 500 includes a substrate 400. And 201239685,

The circuit layout of the i w /joyrAivIY substrate 400 includes an antenna 460 and a matching circuit 450. Moreover, the wireless transmission module 400 further includes a light sensing circuit die 420, an RF transmission circuit die 430, and a plurality of pins 440. The substrate 400 also has a layout line electrically connected to the corresponding pin 440. As shown in the fourth figure, the optical sensing circuit die 420 and the RF transmission circuit die 430 that have not been packaged are adhered to the substrate 400 of the completed circuit layout, and the pins 440 are electrically connected to the corresponding wiring lines. Then, the wire is connected to the corresponding wiring line of the lead 440, the optical sensing circuit die 420, and the RF transfer circuit die 430 by wire bonding technology, and an electrical connection is made. The RF transmission circuit die 430 is also connected to the matching circuit 450 by wires. Finally, the optical transmission module die 420 and the RF transmission circuit die 430 and all of the wires are encapsulated to complete the wireless transmission module of the present invention. Compared with the first embodiment, the wireless transmission module 500 of the second embodiment lacks the control circuit die. That is, the control circuit die can be designed on the main circuit board. Please refer to FIG. 5, which is a schematic diagram showing the connection relationship between the wireless transmission module and the main circuit board of the wireless optical mouse according to the second embodiment of the present invention. The wireless optical mouse's main circuit board 320 includes a wireless transmission module 5, a control circuit 410, a light source 330, a light conducting unit 34A, a scroll wheel 350, a first button 362, and a second button 364. The wireless transmission module 500, as shown in the fourth figure, includes an optical sensing die and a wireless transmission circuit die. Moreover, by using the wiring on the main circuit board 32, the roller 35, the first button 362, and the second button 364 can be electrically connected to the control circuit 41, 201239685

i w /Joy^AMY and connect to the wireless transmission module 5〇〇. Of course, in addition to the above wireless transmission module, there are other ways to complete the wireless transmission module. For example, although the present invention utilizes the COB method for packaging, those skilled in the art can of course integrate all the crystal grains into a QFN package, a QFp package, an lqFP package or a ball grid array package (BGA package). A single wireless transmission module. Furthermore, the antenna of the present invention is not limited to being designed on a substrate, and the antenna of the present invention may also be other forms of antennas externally connected to the substrate, such as a planar inverted-F antenna (PIFA), a bar wheel antenna (BALUN), or an entity. antenna. Furthermore, some wireless mice do not have buttons, but use touch to generate motion signals. That is to say, the control circuit die can also process the touch signal generated by the touch device to output the action signal. In the above, the present invention has been disclosed in the above preferred embodiments, but it is not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS First (a), first (b) and first (c) are schematic diagrams of related components of a conventional wireless optical mouse. The first (a) and the first (b) are schematic views of the wireless transmission module according to the first embodiment of the present invention. The third figure shows the wireless transmission module of the first embodiment of the present invention 11 201239685

The connection relationship between i w /joyrAMY and the main optical board of the wireless optical mouse is not intended. The fourth figure shows a wireless transmission module according to a second embodiment of the present invention. The fifth figure shows the connection relationship between the wireless transmission module of the second embodiment of the present invention and the main circuit board of the wireless optical mouse. [Main component symbol description] 100: Main circuit board 110: Light sensing circuit 120: Control circuit 130: Light source 132: Light 140: Light conducting unit 150: Roller 162: First button 164: Second button 190: Surface 200: Substrate 210 : Control circuit die 220 : Light sensing circuit die 230 : RF transmission circuit die 240 : Pin 250 : Matching circuit 260 : Antenna 300 : Wireless transmission module 12 201239685

1 w /jovrAivlY 320 : main circuit board 322 : end region 3 3 0 : light source 340 : light-conducting unit 350 : roller 362 : first button 364 : second button 400 : substrate 410 : control circuit 420 : light-sensing circuit die 4 3 0 . RF transmission circuit die 440 : pin 450 : matching circuit 460 : antenna 500 : wireless transmission module 13

Claims (1)

201239685 iw/^oyPAMY VII. Patent application scope: 1. A wireless optical mouse wireless transmission module, comprising: a substrate having a plurality of wiring lines, a matching circuit and an antenna; a plurality of conductive contacts, electrical Connecting the wiring lines; a light sensing circuit die adhered to the substrate, receiving a reflected light and performing an optical positioning, and outputting a calculation result of the optical positioning; and a wireless transmission circuit die, Adhering to the substrate, receiving the calculation result and connecting to the antenna, so that the antenna outputs a position signal corresponding to the calculation result. 2. The wireless transmission module of the wireless optical mouse according to claim 1, wherein the optical sensing circuit die and the wireless transmission circuit die are completed by using a die pad technology, and the conductive The contacts are dual in-line pins. 3. The wireless transmission module of the wireless optical mouse according to claim 1, wherein the optical sensing circuit die and the wireless transmission circuit die are in a thin flat package, and a quad flat is not cited. The foot package, a flat package, or a ball grid array package is used. 4. The wireless transmission module of the wireless optical mouse of claim 1, further comprising a control circuit die. 5. The 201239685 iw /joy^AMY line transmission module of the wireless optical mouse according to claim 4, wherein the optical sensing circuit die, the control circuit die, and the wireless transmission circuit die are This is done using a sheet of plastic wafer technology. 6. The wireless transmission module of the wireless optical mouse according to claim 4, wherein the optical sensing circuit die, the wireless transmission circuit die, and the control circuit die are used in a thin flat package, This is done in a quad flat no-lead package, a flat package, or a ball grid array package. 7. The wireless transmission module of the wireless optical mouse according to claim 4, wherein the control circuit die can receive the calculation result and generate the position signal; or the control circuit die can process a A touch signal generated by the touch element. 8. A wireless transmission module for a wireless optical mouse, comprising: a substrate comprising a plurality of wiring lines; a plurality of conductive contacts electrically connecting the wiring circuits; and a light sensing circuit die bonded to the substrate Receiving a reflected light and performing an optical positioning according to the same, and outputting a calculation result of the optical positioning; an antenna; and a wireless transmission circuit die adhered to the substrate, receiving the calculation result and connecting to the The antenna is such that the antenna outputs a position signal corresponding to the calculation result. 9. The wireless 15 201239685 ' TW7369 PAMY transmission module of the wireless optical mouse according to claim 8 , wherein the antenna is a planar inverted F antenna, a bar antenna, or a physical antenna. 10. The wireless transmission module of the wireless optical mouse according to claim 8, wherein the optical sensing circuit die and the wireless transmission circuit die are completed by using a die pad technology, and the conductive The contacts are dual in-line pins. 11. The wireless transmission module of the wireless optical mouse according to claim 8, wherein the optical sensing circuit die, the wireless transmission circuit die is a thin flat package, and a square flat is not cited. The foot package, a flat package, or a ball grid array package is used. 12. The wireless optical mouse wireless transmission module of claim 8, further comprising a control circuit die. 13. The wireless transmission module of the wireless optical mouse according to claim 12, wherein the optical sensing circuit die, the control circuit die, and the wireless transmission circuit die are fabricated by using a die pad technology. carry out. 14. The wireless transmission module of the wireless optical mouse of claim 12, wherein the optical sensing circuit die, the wireless transmission circuit die, and the control circuit die are in a thin flat package, A quad flat no-lead package, a flat package, or a ball grid array package to complete 0 16 201239685 iw /joyrAMY 15. The wireless optical mouse wireless transmission module according to claim 12, The control circuit die can receive the calculation result and generate the position signal; or the control circuit die can process a touch signal generated by a touch component. 17