TWI450223B - Device for compressing protection of display panel and method thereof - Google Patents

Description

Screen squeeze protection device and method thereof

The present invention relates to an electronic device, and more particularly to a screen protection device and method for an electronic device.

In recent years, a wide variety of handheld electronic devices, such as smart phones and tablet PCs, have been widely used. With the continuous development of technology, these types of handheld electronic devices tend to evolve toward a lighter and thinner appearance, and at the same time have a larger display screen, especially a handheld device using a touch panel. Improve User Experience.

However, the thinner body and the larger display screen than in the past may increase the risk of such damage. In some specific situations, for example, in the past, the user placed the phone in the back pocket of the trousers, even if it is squeezed down to the phone, it will not cause damage, but after the phone becomes thinner and the screen becomes larger, The same situation may have caused damage such as a broken screen. Since the screen is one of the important units in such handheld electronic devices, such unintentional screen damage can result in a very high maintenance cost for the user. Therefore, how to avoid such a situation before such a screen damage occurs is indeed an important issue in the current field.

The invention provides a screen extrusion protection device and a method thereof for detecting a pressing pressure value which a screen is subjected to at present.

The invention provides a screen extrusion protection device comprising a squeeze sensing device, an output unit and a processor. The squeeze sensing module is connected to the screen to detect the pressure of the screen, and when the pressure is greater than the preset upper limit, the pressure signal is output. The output unit outputs a warning notification. The processor is coupled to the squeeze sensing module and the output unit, receives a pressure signal from the squeeze sensing module, and transmits a control signal to the output unit to output a warning notification.

The present invention also provides a method of screen extrusion protection comprising the following steps. First of all. Detects the pressure on the screen and outputs a pressure signal when the pressure is greater than the preset upper limit. Then, after receiving the pressure signal, the control signal is transmitted to the output unit to output a warning notification.

Based on the above, the present invention provides a screen squeezing protection device and method thereof for issuing a warning to notify a user when the screen is subjected to a pressure exceeding a predetermined upper limit.

The above described features and advantages of the present invention will be more apparent from the following description.

1 is a block diagram of a screen squeeze protection device according to an embodiment of the invention. Referring to FIG. 1 , the screen squeezing protection device 10 is disposed on an electronic device (not shown). The screen squeezing protection device 10 includes a screen 100 , a squeeze sensing module 110 , an output unit 120 , and a processor 130 . In the embodiment, the screen 100 can be any thin display device, such as a liquid crystal display with a touch function, and is not limited to the above. The squeeze sensing module 110 is disposed below the screen 100 for detecting the pressure of the screen 100 and outputting a pressure signal according to the pressure. It is worth mentioning that the squeeze sensing module 110 is not limited to a specific position disposed under the screen 100, and only needs to be able to successfully detect the pressure of the screen 100. In the present embodiment, a preferred installation position is below the center of the screen 100, but the invention is not limited to the above.

The output unit 120 is configured to output a warning notification, which may be a ringtone prompt, a vibration prompt, or an operating system of the electronic device, interrupting a pop-up window notification of the current application, etc., for the purpose of notifying the user Prompt effect. The warning notice may also be a combination of various prompt effects, and is not limited to the above.

The processor 130 is connected to the squeeze sensing module 110 and the output unit 120. After receiving the pressure signal SP from the squeeze sensing module 110, the processor 130 transmits the control signal CNG to the output unit 120, and controls to output the warning notification by the output unit 120. In this embodiment, the processor 130 may be a central processing unit (CPU), a graphics processing unit (GPU), or a digital signal processor (Digital Signal Processor) of the electronic device. The processing unit for the capability and the transmission signal is selected depending on the actual situation at the time of implementation, and the present invention is not limited to the above.

2 is a block diagram of a device for a screen squeezing protection device in accordance with an embodiment of the present invention. The embodiment shown in FIG. 2 can be described with reference to FIG. 1 , wherein the embodiment illustrated in FIG. 2 provides a more detailed practice of the squeeze sensing module 110 . Referring to FIG. 2 , the squeeze sensing module 110 includes a voltage sensitive resistor unit 111 , a voltage amplifying unit 112 , and a comparing unit 113 . The pressure sensitive resistor unit 111 is configured to detect the pressure experienced by the screen and output the first pressure voltage VP1 according to the pressure experienced by the screen. The voltage amplifying unit 112 is connected to the voltage sensitive resistor unit 111, and receives the first pressure voltage VP1 from the pressure sensitive resistor unit 111, and amplifies the first pressure voltage VP1 to the second pressure voltage VP2.

The comparison unit 113 is connected to the voltage amplification unit 112, receives the second pressure voltage VP2 from the voltage amplification unit 112, and compares the second pressure voltage VP2 with the preset reference voltage VREF. The preset reference voltage VREF is set according to the preset upper limit value of the pressure that the screen can withstand. When the second pressure voltage VP2 is greater than the preset reference voltage VREF, it indicates that the pressure on the current screen has exceeded the preset upper limit value, and the comparison unit 113 outputs the pressure signal SP to the processor 130.

It should be noted that since the first pressure voltage VP1 provided by the pressure sensitive resistor unit 111 according to the pressure conversion is too weak to reach the working range of the comparison unit 113, the voltage amplification unit 112 is required to amplify the first pressure voltage to the second. The pressure voltage VP2 is facilitated to be fed into the comparison unit 113 for comparison. However, in the actual situation, the voltage sensitive resistor unit 111 can directly provide the pressure voltage in the working range of the comparing unit 113, or use the comparing unit 113 with good precision and large working range, that is, the comparing unit 113 can When the first pressure voltage VP1 is directly received for determination, the voltage amplifying unit 112 can be selectively not implemented (removed). At this time, the preset reference voltage VREF must be re-set corresponding to such an embodiment.

3 is an embodiment of a voltage sensitive resistor unit in accordance with an embodiment of the present invention. Referring to FIG. 3, the voltage-sensitive resistor unit 111 includes resistors R1, R2, R3, and R4 connected to each other in the manner of a Wheatstone Bridge. The first ends of the resistors R1 and R3 are coupled to the power supply voltage VCC, and the second ends of the resistors R1 and R3 are respectively coupled to the first output terminal OUT1 and the second output terminal OUT2 of the voltage sensitive resistor 111. The first ends of the resistors R2 and R4 are coupled to the reference voltage REF2, and the second ends of the resistors R2 and R4 are respectively coupled to the first output terminal Out1 and the second output terminal Out2 of the voltage-sensing resistor 111, wherein the reference voltage REF2 can be A negative voltage or a ground voltage is set depending on the actual situation at the time of implementation, and the present invention is not limited to the above.

In this embodiment, the resistor R1 is a pressure sensing resistor for detecting the pressure experienced by the screen (such as the screen 100 of FIG. 1). When the pressure sensing resistor R1 is pressed by the pressure, the impedance value of the pressure sensing resistor R1 is adjusted according to the magnitude of the pressure. In the case of no pressure extrusion, the impedance ratio of the resistor R1 to the resistor R2 is the same as the impedance ratio of the resistor R3 to the resistor R4, and the output terminals Out1 and Out2 do not output any voltage or current. When the pressure sensing resistor R1 receives the pressure, the resistance value of the pressure sensing resistor R1 changes accordingly, so that the ratio of the resistance R1 to the resistance R2 and the impedance ratio of the resistor R3 to the resistor R4 are no longer the same, and the output terminals Out1 and Out2 are The potential difference is the first pressure voltage VP1.

4 is a flow chart showing the steps of a screen squeeze protection method according to an embodiment of the invention. Referring to FIG. 4, first, in step S401, the pressure on the screen is detected, and when the pressure is greater than the preset upper limit, the pressure signal is output. Then, at step S402, after receiving the pressure signal, the control signal is transmitted to the output unit to output a warning notification.

FIG. 5 is a flow chart showing the steps of the screen extrusion protection method according to an embodiment of the present invention. Compared with the embodiment shown in FIG. 4, the embodiment shown in FIG. 5 provides a more detailed implementation step. Referring to FIG. 2 and FIG. 5 simultaneously, first, in step S501, the pressure sensitive resistor unit 111 detects the pressure experienced by the screen and outputs the first pressure voltage VP1 according to the pressure. Next, at step S502, the voltage amplifying unit 112 receives the first pressure voltage VP1 from the voltage sensitive resistor unit 111, and amplifies the first pressure voltage VP1 to obtain the second pressure voltage VP2.

Then, at step S503, the comparison unit 113 receives the second pressure voltage VP2 and compares it with the preset reference voltage VREF. If the second pressure voltage VP2 is not greater than the preset reference voltage VREF, indicating that the pressure applied by the screen 100 has not exceeded the preset upper limit of the pressure that can be withstood, then returning to step S501, the pressure on the screen 100 is continuously detected. If the second pressure voltage VP2 is greater than the preset reference voltage VREF, indicating that the pressure received by the screen 100 has exceeded the preset upper limit value, the comparison unit 113 outputs the pressure signal SP to the processor 130 (step S504). Continuing at step S504, the processor 130 transmits the control signal CNG to the output unit 120 after receiving the pressure signal SP. After receiving the control signal CNG, the output unit 120 outputs a warning notification to notify the user by using the foregoing embodiments, such as ringing, vibration, and the like.

In summary, the present invention provides a screen squeezing protection device and a method thereof, and when the pressure on the screen has exceeded the maximum value that can be withstood, the user is notified by the prompting effect, so that the user can avoid unconsciously , causing damage to the screen.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

10. . . Screen squeeze protection device

100. . . Screen

110. . . Squeeze sensing module

111. . . Pressure sensitive resistor unit

112. . . Voltage amplification unit

113. . . Comparison unit

120. . . Output unit

130. . . processor

CNG. . . control signal

SP. . . Pressure signal

Out1, Out2. . . Pressure-sensitive resistor unit output

R1 ~ R4. . . resistance

VCC. . . voltage

VP1, VP2. . . Pressure voltage

VREF, VREF2. . . Reference voltage

S401～S402, S501～S504. . . step

1 is a block diagram of a screen squeeze protection device according to an embodiment of the invention.

2 is a block diagram of a screen squeeze protection device in accordance with an embodiment of the present invention.

FIG. 3 illustrates an embodiment of a voltage sensitive resistor unit in accordance with an embodiment of the present invention.

4 is a flow chart showing the steps of a screen squeeze protection method according to an embodiment of the invention.

FIG. 5 is a flow chart showing the steps of a screen extrusion protection method according to an embodiment of the invention.

10. . . Screen squeeze protection device

100. . . Screen

110. . . Squeeze sensing module

120. . . Output unit

130. . . processor

Claims (7)

A screen squeeze protection device includes: a squeeze sensing module connected to a screen to detect a pressure received by the screen, and outputting a pressure signal when the pressure is greater than a predetermined upper limit; The output unit outputs a warning notification; and a processor is connected to the squeeze sensing module and the output unit, receives the pressure signal from the squeeze sensing module, and transmits a control signal to the output unit Outputting the warning notification, wherein the squeeze sensing module comprises: a pressure sensitive resistor unit, detecting the pressure received by the screen, outputting a pressure voltage according to the pressure; and a comparing unit connected to the pressure sensing a resistor unit receives the pressure voltage from the voltage sensitive resistor unit, and compares the pressure voltage with a predetermined reference voltage. When the pressure voltage is greater than the predetermined reference voltage, the pressure signal is output, wherein the preset reference voltage is Positively related to the preset upper limit. The device of claim 1, wherein the pressure sensitive resistor unit comprises a pressure sensing element, and when the pressure sensing element is pressed by the pressure, adjusting an impedance of the pressure sensing element according to the pressure value. The device of claim 1, wherein the squeeze sensing module comprises: a pressure sensitive resistor unit, detecting the pressure received by the screen, and outputting a first pressure voltage according to the pressure; a voltage amplifying unit connected to the voltage sensitive resistor unit, receiving the first pressure voltage, and amplifying the first pressure voltage into a second pressure voltage; and a comparing unit connected to the voltage amplifying unit, from the voltage amplifying unit Receiving the second pressure voltage, and comparing the second pressure voltage with a predetermined reference voltage, and outputting the pressure signal when the second pressure voltage is greater than the predetermined reference voltage, wherein the reference voltage is positively correlated with the Set the upper limit. The device of claim 1, wherein the warning notification comprises: an application interruption notification, a ring notification, a vibration notification, or a combination thereof. A method for screen squeezing protection includes: detecting a pressure received by a screen, outputting a pressure signal when the pressure is greater than a predetermined upper limit; and transmitting a control signal to the pressure signal after receiving the pressure signal An output unit outputs a warning notification, wherein the pressure received by the screen is detected, and when the pressure is greater than the predetermined upper limit, the step of outputting the pressure signal includes: detecting the pressure on the screen And outputting a pressure voltage according to the pressure; and comparing the pressure voltage with a predetermined reference voltage, when the pressure voltage is greater than the preset reference voltage, outputting the pressure signal, wherein the reference voltage is positively correlated with the preset upper limit value. The method of claim 5, wherein detecting the pressure on the screen, when the pressure is greater than the predetermined upper limit, the step of outputting the pressure signal comprises: detecting the screen Pressing a first pressure voltage according to the pressure; amplifying the first pressure voltage to obtain a second pressure voltage; and comparing the second pressure voltage with a predetermined reference voltage, when the second pressure voltage is greater than the preset The voltage signal is output when the voltage is referenced, wherein the reference voltage is positively correlated with the predetermined upper limit value. The method of claim 5, wherein the warning notification comprises: an application interruption notification, a ringtone notification, a vibration notification, or a combination thereof.