TWI478019B - Touch display system, display apparatus and frame closing method thereof - Google Patents

Description

Touch display system, display device and screen closing method thereof

The present invention relates to a touch display system, a display device, and a screen closing method thereof, and more particularly to a touch display system having a call function, a display device, and a screen closing method thereof.

Please refer to FIG. 1 , which is a schematic diagram of a display device of the prior art. The conventional display device 1 has an infrared sensing element 11 which is disposed on one side of the display device 1 near the earpiece for sensing. The infrared sensing component 11 is a proximity sensor, and generally requires two parts, one is an infrared light emitting diode and the other is an optical sensor. The infrared light emitting diode emits an infrared signal for the sensing object or the human body, and some of the signals are reflected back, and then detected by the optical sensor. Therefore, when the user approaches the earpiece, for example, when the distance between the user and the infrared sensing component 11 is less than a predetermined value, the infrared signal is reflected to the infrared sensing component 11, and the infrared sensing component 11 emits a signal to The touch function of the display device 1 is turned off to prevent the user from touching the touch panel when the phone is talking.

However, in the display device 1 of the prior art, an infrared light emitting diode and an optical sensor are disposed behind the display panel to sense the distance between the user and the display device 1. Therefore, it is necessary to increase the material cost. expenditure. Moreover, in the process, it is also necessary to add infrared ink to the place where the protective glass corresponds to the infrared sensing element 11, which not only consumes more material cost, but also requires additional process and time to achieve the design.

Therefore, how to provide a touch display system, a display device, and a screen closing method thereof can reduce material cost, simplify the process, save energy consumption, and avoid accidentally touching the touch panel when performing a call function.

In view of the above problems, an object of the present invention is to provide a touch display system, a display device, and a screen closing method thereof, which can reduce material cost, save energy consumption, and avoid wasting power.

To achieve the above objective, the present invention provides a display device including a panel body, a shielding layer, a sensing layer, and a sensor. The panel body has a touch display area. The shielding layer ring is disposed on the touch display area of the panel body to form a shielding area. The sensing layer is disposed in the shielding area. The sensor is electrically coupled to the sensing layer.

In a preferred embodiment of the invention, the sensing layer is disposed on the shielding layer.

In a preferred embodiment of the invention, the shielding layer has at least one opening, and the sensing layer is at least partially disposed in the opening.

In a preferred embodiment of the invention, the sensing layer has a conductive material.

In a preferred embodiment of the invention, the sensing layer is made of silver paste or aluminum paste.

In a preferred embodiment of the invention, the sensing layer is a conductive ink.

In a preferred embodiment of the present invention, the display device further includes a touch electrode layer. The touch electrode layer is located in the touch display area of the panel body.

In a preferred embodiment of the present invention, the display device further includes a metal layer located in the shielding region and electrically connected to the touch electrode layer.

In a preferred embodiment of the present invention, the display device further includes a protective layer covering the metal layer and the touch electrode layer.

In a preferred embodiment of the invention, a portion of the metal layer is electrically coupled to the sensing layer and the sensor.

In a preferred embodiment of the invention, the masking layer is patterned to form a plurality of openings.

In order to achieve the above object, the present invention further provides a screen closing method for a display device. The display device includes a sensing layer and a sensor. The sensing layer is electrically connected to the sensor, and the sensing layer is located in a shielding area, and the screen is closed. The method includes the following steps: the sensor outputs a driving signal to the sensing layer; the sensing layer senses the distance of an object and returns a sensing signal to the sensor; and the sensor transmits the sensing signal according to the original Whether the amount of change generated between the sensing signals is greater than a preset value to determine whether to close a display screen, and if the amount of change of the sensing signal is greater than a preset value, the display screen of the display device is turned off.

In a preferred embodiment of the present invention, when the display device closes the display screen, the call function of one of the display devices remains on.

In a preferred embodiment of the present invention, the sensor sends a shutter signal to one of the display device display drivers, and the display driver turns off the display screen according to the screen signal being turned off.

In a preferred embodiment of the present invention, when the display device does not turn on the call function, the sensor continues to output the drive signal.

In a preferred embodiment of the present invention, when the amount of change of the sensing signal is greater than a preset value, the object is less than 3 cm away from the display device.

To achieve the above, the present invention also provides a touch display system including a touch panel display and an input unit. The display device comprises a panel body, a shielding layer, a sensing layer and a sensor. The panel body has a touch display area. The shielding layer ring is disposed on the touch display area of the panel body to form a shielding area. The sensing layer is disposed in the shielding area. The sensor is electrically coupled to the sensing layer. The input device is coupled to the display device for providing an input signal to the display device to cause the display device to generate a display image.

In a preferred embodiment of the invention, the touch display system includes an electronic device having a display device.

In a preferred embodiment of the present invention, the electronic device includes a tablet computer, a projector, an electronic book, a notebook computer, a mobile phone, a digital camera, a number of assistants, a desktop computer, and a television. Machine, a car display, or a portable DVD player.

As described above, the touch display system, the display device, and the screen closing method thereof are provided with a sensing layer having a conductive material in a shielding area, and the sensing layer and the sensor are electrically coupled to each other, so that the sensor Drives and turns on the sensing layer. The sensing layer senses the distance of the object and returns the sensing signal to the sensor, thereby determining whether the amount of change between the returned sensing signal and the original sensing signal is greater than a predetermined value. When the display device performs the call function and the amount of change of the sensing signal is greater than the preset value, the display screen and the touch function of the display device are turned off. Compared with the prior art, the touch display system, the display device and the screen closing method of the present invention replace the traditional infrared sensor setting with a sensing layer, which not only saves material cost, but also can be used for discriminating objects and sensing layers. The distance between the display device and the display device can be turned off when the call function is executed to save energy consumption and avoid wasting power.

Hereinafter, a touch display system, a display device, and a screen closing method thereof according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals.

2 is a front view of a display device according to a preferred embodiment of the present invention, FIG. 3 is a rear view of the display screen of the display device according to a preferred embodiment of the present invention, and FIG. 4 is a view of FIG. A cross-sectional view of the AA line of the display device. The display device 2 disclosed in the present invention has a call function, such as a mobile phone, a tablet computer, a personal digital assistant, a digital media player, or any electronic product having a call function. In addition, the touch panel of the display device 2 can be a touch panel having a single-sided conductive structure (SITO), a double-sided conductive structure (DITO), or a window integrated touch sensing structure (WIS). The display device 2 of the present embodiment is exemplified by a window integrated touch sensing structure, but is not limited to the present invention. The display device 2 includes a panel body 21, a shielding layer 22, a sensing layer 23, and a sensor 24.

The panel body 21 has a touch display area D which is located approximately at the center of the panel body 21.

The shielding layer 22 is disposed on the touch display area D of the panel body 21 to form a shielding area S. The shielding layer 22 of the embodiment is disposed on the four edges of the panel body 21 such that the shielding area S is formed around the panel body 21, and the central portion is not covered by the shielding layer 22, which is an active display area. ). The size of the shielding layer 22 shown in this embodiment is not limited to the present invention, and the size of the shielding layer 22 may be designed because of the overall size of the display device 2 or the function of the application. The material of the shielding layer 22 may be a material that blocks light, absorbs light, or is opaque, and is, for example, a dark ink or a polymer.

As shown in FIG. 4, the shielding layer 22 has at least one opening 221, and the shielding layer 22 of the embodiment is patterned to form a plurality of openings 221. As shown in FIG. 2, the aspects of the openings 221 may be trademarks of electronic products. The drawings or brand letters are not limited to the invention.

The sensing layer 23 is disposed in the shielding area S, and is at least partially disposed in the opening 221, and other portions of the sensing layer 23 may be extended over the shielding layer 22 (as shown in FIG. 4). The material of the sensing layer 23 is, for example, silver paste, aluminum paste or other material having a conductive material, so that the sensing layer 23 can be electrically conductive. In addition, the sensing layer 23 may also have a conductive ink, and the sensing layer 23 may be colored, for example, black, white or colored. The manufacturer or manufacturer may design the opening 221 to be of a different pattern and size depending on the design of the trademark or indicia.

Referring to FIG. 3 again, the sensor 24 is electrically coupled to the sensing layer 23 . The sensor 24 is driven and electrically connected to the sensing layer 23, so that the sensing layer 23 becomes one of the electrodes, for example, so that when the user approaches the sensing layer 23 to a certain distance, the user and the sensing layer 23 are The capacitance value is changed so that the sensor 24 can thereby sense the distance of the user from the sensing layer 23. In more detail, when the user approaches the sensing layer 23, a coupling capacitor is formed between the user and the sensing layer 23. The sensor 24 can determine the distance between the user and the sensing layer 23 according to the change of the capacitance value. . When the display device 2 performs the call function, since the user is close to the earpiece, the sensor determines whether the object is close to the sensing layer 23 by the amount of change between the sensor sensing signal and the original sensing signal. When the amount of change is greater than the predetermined value, it is determined that the distance between the user and the sensing layer 23 is less than a predetermined value (for example, less than 3 cm), and at the same time, the display device 2 turns off a display screen (as shown in FIG. 5), so that The display device 2 is in a state of power saving. In addition, the touch function of the display device 2 can be turned off to prevent the cheek from being close to the touch device 2 from being accidentally touched.

The display device 2 of the present embodiment further includes a touch display area D, a touch electrode layer 25, and a metal layer 26. At least a part of the panel body 21 is located in the touch display area D, that is, the panel body 21 spans the shielding area S and the touch display area D. The touch electrode layer 25 is located in the touch display area D of the panel body 21 and serves as a touch sensing electrode of the touch panel in the display device 2 to determine the coordinate of the touch, according to the type set by the touch sensing electrode. The utility model can be divided into a single-sided conductive structure (SITO), a double-sided conductive structure (DITO) or a touch panel of a Windows integrated sensor (WIS).

The metal layer 26 is disposed in the shielding area S. The metal layer 26 electrically connects the sensor 24 and the sensing layer 23, so that the display device 2 can sense whether the user is close to the display device 2 by the sensing layer 23. In addition, the metal layer 26 is electrically connected to the sensor 24 and the touch electrode layer 25, and the sensor 24 can sense the position where the touch display area D is touched by the touch electrode layer 25, thereby causing the display device to be touched. 2 has touch function.

In addition, the display device 2 further has a protective layer 27, as shown in FIG. 3 and FIG. 4, covering the shielding layer 22, the sensing layer 23, the touch electrode layer 25, and the metal layer 26. The protective layer 27 has the characteristics of corrosion resistance and wear resistance, and can effectively protect the shielding layer 22, the sensing layer 23, the touch electrode layer 25, and the metal layer 26, and can prevent impurities and dust from entering. The display device 2 further has an insulating layer (not shown) between the sensing layer 23 and the shielding layer 22. It can effectively produce the effect of insulation and avoid electrical conduction.

Please refer to FIG. 6, which is a cross-sectional view showing still another aspect of the display device of the present invention. The difference from the above embodiment is that the shielding layer 22a of the display device 2a of the present embodiment does not have an opening such that the trademark or mark of the electronic product is not displayed on the front side of the display device 2a. In addition, the sensing layer 23a is disposed on the shielding layer 22a such that the sensing layer 23a can sense whether the user is close to the display device 2a.

The above is the structure of the display device 2 disclosed in the present invention. The connection is still based on the above-described drawings (FIGS. 2 to 5), and the actual application is used as the example of the display device 2, and a detailed description is provided. To explain the screen closing method of the display device 2.

Please refer to FIG. 7, which is a flow chart of the steps of the screen closing method of the display device according to the preferred embodiment of the present invention. The display device 2 includes a sensing layer 23 and a sensor 24. The sensing layer 23 is electrically connected to the sensor 24, and the sensing layer 23 is located in a shielding area S. The screen closing method includes steps S01 to S04.

In step S01, the sensor 24 outputs a driving signal to the sensing layer 23. The sensor 24 drives and turns on the sensing layer 23 with a driving signal so that the sensing layer 23 becomes an electrode such as a capacitor. When the display device 2 does not turn on a call function, the sensor 24 continues to output the drive signal to the sensing layer 23.

In step S02, the sensing layer 23 senses the distance of an object and returns a sensing signal to the sensor 24. The object can be a human body or a user. Therefore, when the object is close to the sensing layer 23 of the display device 2, a coupling capacitance is generated between the object and the sensing layer 23, and the sensing signal is transmitted back to the sensor 24 according to the change of the capacitance value, thereby determining the object and the sensing. The distance of layer 23.

In step S03, the sensor 24 determines whether to close a display screen according to whether the amount of change generated between the returned sensing signal and the original sensing signal is greater than a preset value. The sensor 24 determines whether the object is close to the sensing layer 23 according to the amount of change between the returned sensing signal and the original sensing signal.

In step S04, if the amount of change of the sensing signal is greater than the preset value, the display screen of the display device 2 is turned off. When one of the display functions of the display device 2 is turned on, and the amount of change of the sensing signal is greater than the preset value, the display screen of the display device 2 is turned off. Wherein, the amount of change of the sensing signal is greater than the preset value, and the distance between the object and the display device 2 is less than 3 cm. In more detail, when the display device 2 performs the call function, and the amount of change generated between the sensed signal and the original sense signal is returned to determine the distance between the object and the sensing layer 23 of the display device 2, when the amount of change When the distance between the object and the sensing layer of the display device 2 is less than 3 cm, the sensor 24 sends a closed screen signal to a display driver (not shown) of the display device 2, The display driver closes the display screen according to the screen signal (as shown in FIG. 5), so that the display device 2 can save energy consumption of the display screen when performing the call function, and avoid wasting unnecessary power. When the display device 2 closes the display screen, the call function of the display device 2 remains on.

The present invention also provides a touch display system including a display device 2 and an input unit (not shown). The display device 2 of this embodiment is, for example, a touch panel display. The display device 2 includes a panel body 21, a shielding layer 22, a sensing layer 23, and a sensor 24. The panel body 21 has a touch display area D. The shielding layer 22 is disposed on the touch display area D of the panel body 21 to form a shielding area S. The sensing layer 23 is disposed in the shielding area S. The sensor 24 is electrically coupled to the sensing layer 23 . The panel body 21, the shielding layer 22, the sensing layer 23, and the sensor 24 have the same technical features as the panel body 21, the shielding layer 22, 22a, the sensing layer 23, 23a, and the sensor 24, among the above embodiments. Therefore, it will not be repeated here.

The input unit is coupled to the display device 2 for providing an input signal to the display device 2 to cause the display device 2 to generate a display image.

The touch display system includes an electronic device having a display device 2. The electronic device is, for example, a tablet computer, a projector, an electronic book, a notebook computer, a mobile phone, a digital camera, a digital assistant, a desktop computer, a television, a vehicle display, or a Portable DVD player.

In summary, the touch display system, the display device and the screen closing method thereof are provided with a sensing layer having a conductive material in a shielding area, and electrically coupling the sensing layer and the sensor, so that the sensor Drives and turns on the sensing layer. The sensing layer senses the distance of the object and returns the sensing signal to the sensor, thereby determining whether the amount of change between the returned sensing signal and the original sensing signal is greater than a predetermined value. When the display device performs the call function and the amount of change of the sensing signal is greater than the preset value, the display screen and the touch function of the display device are turned off. Compared with the prior art, the touch display system, the display device and the screen closing method of the present invention replace the traditional infrared sensor setting with a sensing layer, which not only saves material cost, but also can be used for discriminating objects and sensing layers. The distance between the display device can be turned off when the display device performs the call function, thereby saving energy consumption, avoiding wasting power, and avoiding accidental touch on the touch panel to perform other functions.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of this creation shall be included in the scope of the appended patent application.

1, 2, 2a. . . Display device

11. . . Infrared sensing component

twenty one. . . Panel body

22, 22a. . . Masking layer

221. . . Opening

23, 23a. . . Sensing layer

twenty four. . . Sensor

25. . . Touch electrode layer

26. . . Metal layer

27. . . The protective layer

D. . . Touch display area

A-A. . . straight line

S. . . Shading area

S01～S04. . . step

1 is a schematic view of a display device of the prior art;

2 is a front elevational view of a display device in accordance with a preferred embodiment of the present invention;

3 is a rear elevational view of a display screen of a display device in accordance with a preferred embodiment of the present invention;

Figure 4 is a cross-sectional view taken along line A-A of the display device of Figure 3;

Figure 5 is a schematic view of a display device of the present invention;

Figure 6 is a cross-sectional view showing still another aspect of the display device of the present invention;

Figure 7 is a flow chart showing the steps of a display device in accordance with a preferred embodiment of the present invention.

2. . . Display device

twenty one. . . Panel body

twenty two. . . Masking layer

221. . . Opening

twenty three. . . Sensing layer

twenty four. . . Sensor

25. . . Touch electrode layer

26. . . Metal layer

A-A. . . straight line

D. . . Touch display area

S. . . Shading area

Claims (9)

A display device includes: a panel body having an upper surface and a lower surface, the lower surface having a touch display area; a touch electrode layer located in the touch display area of the panel body; a shielding layer, a ring a shielding area is formed on the periphery of the touch display area of the panel body, wherein the shielding layer has at least one opening; a sensing layer is at least partially disposed in the opening of the shielding area; a sensor; a metal layer disposed on a side of the shielding layer away from the lower surface, and electrically connected between the touch electrode layer and the sensor, and electrically connected between the sensing layer and the sensor . The display device of claim 1, wherein the sensing layer is disposed on the shielding layer. The display device of claim 1, wherein the sensing layer has a conductive material. The display device of claim 1, wherein the sensing layer is made of silver paste or aluminum paste. The display device of claim 1, wherein the sensing layer is a conductive ink. The display device of claim 1, further comprising: a protective layer covering the metal layer and the touch electrode layer. A touch display system includes: A display device, comprising: the display device according to any one of claims 1 to 6; and an input device coupled to the display device for providing an input signal to the display device The display device produces a display image. The touch display system of claim 7, wherein the touch display system comprises an electronic device having the display device. The touch display system of claim 8, wherein the electronic device comprises a tablet computer, a projector, an e-book, a notebook computer, a mobile phone, a digital camera, a number of assistants, and a table. A laptop, a TV, a car monitor, or a portable DVD player.