CN1435065A - Arrangement of loudspeaker and microphone side located structure of mobile telephone - Google Patents

Abstract

A headphone (2), Mic (4) side located structure of mobile telephone arranges the headphone and Mic on side of mobile telephone, wherein headphone (2) and Mic (4) can be fixed or retractable which can be made mobile telephone smaller and improved ascoustics character and cosy of mobile telephone, more important is the distance (D1) from antenna (1) to human brain increased so that decreasing SAR, and effect of brain to antenna is decreased gratly to improve antenna efficiency. It also can improve communication quality and prolong talk time.

Description

The handset of the mobile phone, the Mic side-mounted structure

technical field

The present invention relates to mobile phone, specifically, the present invention relates to mobile phone structure-earpiece, Mic side-mounted type structure (Fig. 2) earpiece, Mic side is placed on the side wall of mobile phone rather than as present side is placed on the front of mobile phone. This move can solve many problems existing in the existing mobile phone structure.

Background technique

The typical form of the existing mobile phone structure is shown in Figure 1. Its basic feature is that the handset, Mic, LCD, and keyboard are all placed on the same plane in the range of the printed circuit board—it is called a vertical structure.

The SAR of many mobile phones with this structure is unqualified. This is because a critical distance (D0 in Figure 1)—the distance between the mobile phone antenna and the human brain is too short, which depends on/is smaller than the thickness of the mobile phone.

On the other hand, due to the impact of the human brain effect, the efficiency of the mobile phone antenna is greatly reduced, which greatly reduces the communication quality and greatly shortens the call time.

In this case, in order to make the SAR qualified, some people have taken the method of mismatching the input circuit of the antenna or reducing the output power of the transmitter. The result is that although the SAR is marginal, the communication quality of the mobile phone is poor due to the reduction of effective output power. So far, no effective means to reduce SAR without reducing the effective output power has been seen.

Because the distance between the mobile phone antenna and the human brain is too short, the buzzing sound of the handset of the GSM mobile phone can often be heard. In this vertical structure, the handset, Mic, and LCD must be placed on the same plane and arranged vertically, which increases the length of the mobile phone and makes the mobile phone look bulky. During a call, the front of the mobile phone contacts the face in a large area, which causes discomfort during use and makes people sweat easily. Due to the limitations of acoustic design, the voice quality of mobile phones is far from that of Walkman.

The SAR standard will be announced soon, which is to protect mobile phone users from unsafe mobile phone radiation. If the SAR fails, the mobile phone will not be sold because what people need is a safe communication tool.

The miniaturization of the phone's size is a selling point, which makes the phone more attractive.

Contents of the invention

The main purpose of the present invention is to greatly improve the SAR of all types of mobile phones, which is an important mobile phone security index, without reducing the output power, and also greatly improve the efficiency of mobile phone antennas so as to improve communication quality and prolong call time.

The secondary purpose of the present invention is: provide a kind of new structure of mobile phone, it is possible to realize the miniaturization of mobile phone under the same or lower cost condition with the same chip as existing mobile phone, more miniaturization. By adopting the invention, the industrial design of the appearance of the mobile phone is changed, the mobile phone looks more beautiful and is more comfortable to use.

Other purposes, characteristics and advantages of the present invention are: reduce the buzzing sound of the GSM mobile phone, improve the voice quality with the same or lower volume and improve the comfort level of mobile phone use through a more reasonable ergonomic design.

A mobile phone structure-earpiece, Mic side-mounted structure, which is characterized in that the handset and Mic are placed on the side wall of the mobile phone (the left side (Fig. 2A) or the right side depends on which side is far away from the antenna), or the bottom wall (Fig. 6A)) instead of being placed on the front of the phone as seen now. The handset or Mic can be designed to be manually retractable or button pop-up to suit different situations (Figure 3 & Figure 4).

Compared with the existing vertical structure, this structure has many advantages:

1. Without reducing the output power, the SAR of the mobile phone can be improved by about 4-10dB. This is because this structure changes the key distance from the mobile phone antenna to the human brain, which depends on the thickness of the mobile phone to depend on the width or even the length of the mobile phone, depending on the specific conditions of different mobile phones, which makes this critical distance The distance is increased by a factor of 3-10. At the same time, because of the increase of this critical distance, the influence of the human brain on the efficiency of the mobile phone antenna is greatly reduced, and the efficiency of the mobile phone antenna can be increased by about 25%-35%.

2. The length of the mobile phone can be shortened by about 15%, because this structure saves the space of the earpiece that was placed vertically above the LCD. The volume of the mobile phone is greatly reduced.

3. These benefits are valid for all types of mobile phones, such as GSM, CDMA, TDMA, AMPS, JDC, 3G and so on.

4. The hum of the GSM mobile phone is reduced, because the distance between the earpiece and the antenna is increased and it is perpendicular to the antenna, so that the coupling between the earpiece coil and the antenna is greatly reduced.

5. The sound channel part of the earpiece can be designed to be convex, so that the earpiece can be inserted into the ear hole, so that the acoustic characteristics are improved, making it possible to have a voice quality like a walkman. And under the same or lower volume conditions.

6. It is more secretive, and others cannot hear the leakage.

7. Because only the side wall of the mobile phone touches the face, the contact area is greatly reduced compared with the current frontal contact, which improves the comfort when talking, and does not make people sweat easily, and it is not easy to damage the delicate makeup of ladies up.

8. The shape change has changed the ratio of the head of the mobile phone to the whole, making it look more beautiful and not so big anymore.

9. All the above benefits may be realized under the condition of using the same chip of the existing mobile phone at the same or lower cost because the printed circuit board and the case are smaller.

10. The structure shown in Fig. 2 is the most ideal for the PDA mobile phone, it can make the volume increase from the PDA to the PDA mobile phone at least. The structure shown in Figure 3 or Figure 4 is most suitable for ultra-small mobile phones. It does not lose the sufficient length of the call required by ergonomics because of the ultra-short size of the mobile phone. Usually short and long enough. The structure shown in Figure 5A is most suitable for ultra-low SAR mobile phones, and at the same time meets the needs of super-large LCDs, and its shape is unique. The structure shown in Figure 6A is most suitable for extremely low SAR mobile phones and has a completely different shape from the past.

11. The reliability of the mobile phone with this structural mode is the same as or better than that of the vertical type.

12. There are many advantages, and the manufacturability of the mobile phone with this structure is the same as or better than that of the vertical type.

From any market, literature, magazines, so far no mobile phone with this structure has been seen. The closest prior art form is exactly the commonly seen vertical structure and clamshell structure.

Description of drawings

The accompanying drawings, which are a common part of the description of the invention, show particulars of the invention and serve to explain the principles of the invention. Please understand, however, that the drawings are only for illustration, and are not intended to limit the scope of application of the present invention, and they will be clearly defined in the claims.

Fig. 1 is a common handset, a plan view of the Mic vertical mobile phone structure.

Fig. 1A is a front view of such a vertical mobile phone structure.

Fig. 1B is a side view of the structure of the vertical mobile phone.

Figure 1C Front view of printed circuit board assembly.

Fig. 2 is the plan view of the handset of the present invention, the structure of the Mic side-mounted mobile phone.

Fig. 2A is the front view of the side-mounted mobile phone structure of the present invention.

Fig. 2B is a side view of the structure of the side-mounted mobile phone of the present invention.

Figure 2C is a front view of the printed circuit board assembly of the present invention.

Figure 2D is a side view of the printed circuit board assembly of the present invention.

Figure 1A is the same as that in Figure 1 and is hereby cited for comparison.

Fig. 3 is a plan view of the retractable earpiece of the present invention and the structure of the fixed Mic side-mounted mobile phone.

Fig. 3A is the front view of the retractable earpiece of the present invention and the fixed Mic side-mounted mobile phone structure.

Fig. 3B is a side view of the retractable earpiece of the present invention and the structure of the fixed Mic side-mounted mobile phone.

Figure 1A and Figure 1B are the same as those in Figure 1, and are cited here for reference comparison.

Fig. 4 is the plan view of the structure of fixed earpiece and retractable Mic side-mounted mobile phone according to the present invention.

Fig. 3A is the front view of the structure of fixed earpiece and retractable Mic side-mounted mobile phone of the present invention.

Fig. 3B is a side view of the structure of the fixed earpiece and the retractable Mic side-mounted mobile phone of the present invention.

Figure 1A and Figure 1B are the same as those in Figure 1, and are cited here for reference comparison.

Figures 5 & 6 suggest two ways to implement the present invention.

Fig. 5A is a front view of the proposal 1 mobile phone.

Figure 5B is a side view of the Proposal 1 handset.

Figure 6A is a front view of the proposal 2 handset.

Fig. 1A, Fig. 1B & Fig. 2A, Fig. 2B are the same as those in Fig. 1 and Fig. 2, and are cited here for reference comparison.

Detailed ways

Referring to Fig. 1, it has shown the typical form-vertical structure of existing mobile phone structure. Assuming a coordinate system, the X-axis is the width direction of the mobile phone, the Y-axis is the length direction of the mobile phone, and the Z-axis is the thickness direction of the mobile phone. It can be clearly seen that the basic features of the vertical structure are: earpiece 2, Mic4, LCD3 and printing The printed circuit board assembly PCBA is located in the same X-Y plane, and the axes of the columnar earpiece 2 and Mic4 point to the Z direction. The X and Y coordinates of the handset and Mic are not 0. Antenna 1 is located on the upper right side (or upper left side) of the mobile phone, and the distance from the key mobile phone antenna to the human brain is D0. D0 depends on the thickness of the phone. For example, for a mobile phone A, D0 = 12mm, and for a mobile phone B, D0 = 8mm.

Although the technical indicators and testing methods of SAR have not yet been finalized, we can still make estimates based on the worst case. According to the basic law of electromagnetic radiation, SAR is proportional to 1/D or 1/D ² . Conservatively consider the SAR proportional to 1/D in the most unfavorable case. It means that increasing D can greatly reduce SAR without reducing output power. The present invention utilizes this principle to realize the reduction of SAR without reducing the output power.

D is the distance from the mobile phone antenna to the human brain. Specifically for mobile phones, what determines it? When you think about it a little bit more, this distance is actually the distance from the phone antenna to the earpiece. Changing the position of the earpiece can increase D and reduce SAR. This also illustrates the typical form of the existing mobile phone structure - the vertical structure has a huge defect because such a layout makes D too short. The structure of mobile phones should not follow the structure of fixed phones.

1. Fig. 2 presents the handset of the present invention, the schematic diagram of Mic side mounted mobile phone structure. Its basic features are: the handset 2 and Mic4 are located in a plane different from that of the printed circuit board assembly PCBA, and the axes of the columnar handset 2 and Mic4 point to the X direction. The X coordinates of the handset and Mic are both 0. Antenna 1 is located on the upper right side (or upper left side) of the mobile phone, and the distance between the key mobile phone antenna and the human brain is D1. With this arrangement, D1 depends on the width of the phone. The aforementioned same mobile phone A, D1=36mm, mobile phone B, D1=34mm.

For mobile phone A, the SAR improvement is I=10log(D1/D0)=10Log(36/12)=4.8dB.

For mobile phone B, the SAR improvement is I=10log(D1/D0)=10Log(34/8)=6.3dB.

Because of D, the increase of the key distance from the mobile phone antenna to the human brain, the influence of the human brain on the antenna efficiency is greatly reduced at the same time, which greatly increases the antenna efficiency and reduces the input impedance of the antenna, which is very important for mobile phone communication. Quality is of great benefit to the performance of mobile phone RF power amplifiers.

In the case of Figure 6A, D depends on the length of the mobile phone and is maximized.

2. Obviously, the mobile phone with the structure shown in Fig. 2 is shorter than the mobile phone with the structure shown in Fig. 1. This is because the earpiece is placed on the side, and it can be located at the same Y position as the LCD, thus saving the space necessary for the original earpiece above the LCD . Taking the aforementioned same mobile phone A as an example, the original length is 130mm, but the present invention can reduce the length to 110mm, a reduction of 15%. Mobile phones no longer look "big", which leaves a lot of room for industrial designers.

3. For GSM phones, its buzzing sound is annoying. One reason for this is the coupling of the earpiece coil to the antenna. It can be seen from Figure 2 that because the distance from the antenna increases and the earpiece is perpendicular to the antenna, the coupling is at its weakest state, and the hum of the GSM handset earpiece is reduced.

4. For a mobile phone with a vertical structure as shown in Figure 1, the front of the mobile phone contacts the face in a large area during a call. The contact area is about the width of the mobile phone W0*L2, and L2 is the length of contact with the face. For a mobile phone with a side-mounted structure as shown in Figure 2, only the side wall of the mobile phone touches the face during a call, and the contact area is about the thickness D0*L2 of the mobile phone. Obviously this area is much smaller than before. This makes talking on the phone much less uncomfortable and previously prone to sweating, which is crucial to reducing damage to the delicate makeup of the ladies. Improved moderation when using phones.

5. As shown in Figure 2A, the sound channel part of the earpiece can be designed as convex or flat as required. If it is designed to be convex, the earpiece can be inserted into the ear hole, and the acoustic characteristics are greatly improved, making it possible to have a Walkman-like voice quality at the same or lower volume. Because the earpiece can be inserted into the ear hole, the call is more private, and others cannot hear the leakage.

6. The side-mounted structure shown in Fig. 2 is the most ideal for the PDA mobile phone, and it can make the volume increase from the PDA to the PDA mobile phone at least.

7. The Mic4 in picture 2 is a fixed type, it can also be designed as retractable type, manual retractable type or button pop-up type. This is the Mic retractable side-mounted mobile phone shown in Figure 4. This structure is most suitable for ultra-small mobile phones. It does not lose the sufficient length of the call required by ergonomics because of the ultra-short size of the mobile phone. Usually short and long enough.

8. The earpiece 2 in Fig. 2 is fixed, and it can also be designed to be retractable, manually retractable or button pop-up. Here it is the handset retractable side-mounted mobile phone shown in Figure 3. This structure is another option for ultra-small mobile phones.

9. The present invention and all these benefits are valid for all types of mobile phones like GSM, CDMA, TDMA, AMPS, JDC, 3G, etc.

10. Since the technical implementation of realizing all the benefits of the present invention is through the reorganization of the positions of the same components, all the benefits of significant improvements to the original structural defects can be obtained without any production process or production equipment different from the existing ones . The result is a phone with the same or better performance, features, quality, reliability, and more than the original phone. Different from previous safety performance, communication quality and styling have become powerful selling points.

11. All the above benefits can be realized under the condition of using the same chip in the existing mobile phone at the same or lower cost. All that is required is about 5% redesign of the printed circuit board, about 15% redesign of the enclosure, and 100% re-use of the software. The whole new product development time is about 4 months. It is easy to pass type approval and various other required tests up to production approval. Therefore, this is also a fast, cost-effective, and low-risk way to develop new products that benefit users and thus have strong selling points.

12. One of the development trends of mobile phones is the miniaturization of volume and size, and the large area of LCD. Based on this patent proposal here, the design structure that conforms to these trends is shown in Figure 5 - the large-area LCD forms a large key distance D from the mobile phone antenna to the human brain, so that the SAR of the mobile phone is very low and the antenna efficiency is very high . It is safe, with high communication quality and longer talk time, and the curved side wall design conforms to facial ergonomics to bring maximum comfort to users.

13. It should be pointed out that the best way to implement the present invention is to let D change from depending on the thickness of the mobile phone to depending on the length of the mobile phone as shown in Figure 6A, which maximizes D.

Claims (6)

1. A mobile phone structure, called earpiece, Mic side-mounted structure, is characterized in that the earpiece, Mic is placed in such a position, its axis is along the X or Y axis of the mobile phone (the width or length direction of the mobile phone) and perpendicular to the LCD & PCB Instead of placing them (handset, Mic, LCD&PCB) on the same plane, they are located on the side wall of the mobile phone (in the direction of the length or width of the mobile phone) (the left or right side depends on which side is far away from the antenna) as shown in Figure 2 on the next page, Figure 6A & Figure 1 respectively It is shown that under such an arrangement, the distance from the antenna to the human brain is greatly increased compared with the original method. 2. The mobile phone structure of claim 1 of this patent, its receiver is telescopic as shown in the figure. 3. The mobile phone structure of claim 1 of this patent, its Mic is retractable as shown in the figure. 4. The mobile phone structure of claim 2 of this patent, the telescopic earpiece retractable mode is manual or button ejection. 5. The mobile phone structure of claim 3 of this patent, the telescopic Mic retractable mode is manual or button pop-up. 6. The mobile phone structure according to claim 1 of this patent, the sound channel of the earpiece is raised or flat as shown in Fig. 2.

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