TWI708176B - Wearable electronic device - Google Patents

Abstract

When a wearable electronic device is in a power saving mode, in a first time period of a frame, display of a touch display panel is idled but touch of the touch display panel is enabled; and in a second time period of the frame, display of the touch display panel is updated but touch of the touch display panel is disabled.

Description

Wearable electronic device

The invention relates to a wearable electronic device.

In recent years, with the vigorous development of electronic and communication technologies, wearable electronic devices, such as Apple Watch (Apple Watch), provide many other application functions that can satisfy people's daily life, social interaction, and entertainment. Therefore, the market for wearable electronic devices has become more and more popular.

In order to reduce power consumption, the wearable electronic device can usually be placed in a power saving mode. Figure 1 shows two operating modes of the conventional wear-and-tear electronic device: normal mode and power saving mode. In normal mode, the screen can display normally (45Hz), and the touch function can also be normally enabled (90Hz). In the power saving mode, the screen is idle (for example, but not limited to only displaying time) (15Hz) and the display brightness decreases, and the touch function is also idle (15Hz). As for the switching between the normal mode and the power saving mode, for example, in the normal mode, the user taps the screen to enter the power saving mode; in the power saving mode, the user taps the screen to enter the normal mode. In other words, in the power saving mode, the user cannot operate the user interface (UI) of the wearable electronic device, because once the user clicks on the screen, it will jump back to the normal mode.

However, if the circuit design is not good, it may cause display color difference on the display screen of the wearable electronic device, resulting in poor user experience.

Therefore, the present application provides a wearable electronic device that can solve the display color difference of the display screen of the wearable electronic device even in the power saving mode, so as to improve the user experience.

According to an example of the present case, a wear-through electronic device is proposed. A wear-through electronic device includes: a touch display panel; an array substrate row driving circuit, coupled to the touch display panel, for receiving a first array The substrate row drive signal and sends a second array substrate row drive signal to the touch display panel; a power integrated circuit coupled to the touch display panel, when set in a normal mode, the power integrated circuit Provide power to the touch display panel. When set in a power saving mode, the power integrated circuit is turned off; a touch display driving integrated circuit is coupled to the power integrated circuit and the touch display panel, When set in the normal mode, the power integrated circuit provides power to the touch display drive integrated circuit, when set in the power saving mode, the touch display drive integrated circuit provides power to the touch display panel , The touch display driving integrated circuit sends a synchronization signal and a touch sensing signal to the touch display panel; and a multiplexer circuit between the touch display driving integrated circuit and the touch display panel, The touch display driving integrated circuit sends a display signal to the touch display panel through the multiplexer circuit. When the wearable electronic device is set in the power saving mode, in a first period of a frame, the multiplexer circuit is turned off so that the display signal is not sent to the touch display panel, and the first The array substrate row drive signal is disabled so that the array substrate row drive circuit does not issue the The second array substrate row drives signals to the touch display panel to display idle, the touch display drive integrated circuit sends the touch sensing signal to the touch display panel to enable the touch function, and in the frame In a second period of, the multiplexer circuit is turned on so that the display signal is sent to the touch display panel, and the first array substrate row drive signal is enabled so that the array substrate row drive circuit sends the second Two array substrates drive signals to the touch display panel to update the display, and the touch display drive integrated circuit does not send the touch sensing signal to the touch display panel to disable the touch function.

According to an example of this case, a wearable electronic device is provided, including: a touch display panel; an array substrate row driving circuit, coupled to the touch display panel, for receiving and sending out a first array substrate row driving signal A second array substrate row drives signals to the touch display panel; a power integrated circuit, coupled to the touch display panel, when set in a normal mode, the power integrated circuit provides power to the touch The display panel, when set in a power saving mode, the power integrated circuit is turned off; a touch display drive integrated circuit, coupled to the power integrated circuit and the touch display panel, when set in the normal mode In the next step, the power integrated circuit provides power to the touch display drive integrated circuit. When set in the power saving mode, the touch display drive integrated circuit provides power to the touch display panel, and the touch display drive integrated circuit The bulk circuit sends a synchronization signal and a touch sensing signal to the touch display panel; and a multiplexer circuit between the touch display drive integrated circuit and the touch display panel, the touch display drive integrated circuit The circuit sends a display signal to the touch display panel through the multiplexer circuit. When the wearable electronic device is set in the power saving mode, in a first period of a frame, the display of the touch display panel is idle and the touch function of the touch display panel is enabled, and One second time of frame During the period, the display of the touch display panel was updated, and the touch function of the touch display panel was disabled.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows:

S1-S6: Operation mode

300: Wearable electronic device

310: Touch display panel

320: Array substrate row drive circuit

330: Power Integrated Circuit

340: Touch display drive integrated circuit

350: Multiplexer circuit

T1: The first period

T2: Second period

Figure 1 shows two operation modes of the conventional wear-and-tear electronic device.

Figure 2 shows two operation modes of the wear-through electronic device according to an embodiment of the present case.

FIG. 3 is a functional block diagram of a wear-through electronic device according to an embodiment of the present invention.

FIG. 4 shows the power integrated circuit of the wear-through electronic device and the touch display drive integrated circuit according to an embodiment of the present case.

FIG. 5 shows a signal waveform diagram of a wear-through electronic device according to an embodiment of the present case.

The technical terms in this specification refer to the customary terms in the technical field. If this specification describes or defines some terms, the explanation of this part of the terms is subject to the description or definition in this specification. Each embodiment of the present disclosure has one or more technical features. Under the premise of possible implementation, those skilled in the art can selectively implement some or all of the technical features in any embodiment, or selectively combine some or all of the technical features in these embodiments.

Figure 2 shows two operation modes of the wear-through electronic device according to an embodiment of the present case: normal mode and power saving mode. The user can In the setting function, make a setting to determine whether the wearable electronic device is in a normal mode or a power saving mode. If you want to switch between modes (normal mode and power saving mode), you need to set it in the setting function.

In the normal display mode S1, the screen can display normally (45Hz), and the touch function can also be normally enabled (90Hz) (also called the first touch-enabled mode S2), of course, the user can also use it normally UI for wearable electronic devices. If in the first touch-enabled mode S2, when the user does not touch the screen for a period of time (for example, but not limited to, 1 second), the first idle mode S3 is entered (the screen brightness decreases). Of course, in the first touch enabling mode S2, the user can operate the UI normally and the screen brightness is normal.

In the power saving mode S4, the screen is idle (for example, but not limited to, only display time) (15 Hz), and the touch function mode includes a second touch enable mode S5 and a second idle mode S6. In the second touch-enabled mode S5, the screen brightness is lower (lower than that of the first touch-enabled mode S2), but the user can still use the UI of the wearable electronic device normally. If in the second touch enabling mode S5, when the user does not touch the screen for a period of time (for example, but not limited to, 1 second), the second idle mode S6 (the screen brightness is lower) is entered.

FIG. 3 is a functional block diagram of a wear-through electronic device according to an embodiment of the present invention. The wearable electronic device 300 includes a touch display panel 310, an array substrate row drive (Gate on Array, GOA) circuit 320, a power integrated circuit (power IC) 330, and a touch and display drive integrated circuit (TDDI, Touch and Display). Driver Integration Circuit) 340 and multiplexer circuit 350.

The touch display panel 310 is, for example, but not limited to, an organic light emitting diode (OLED) touch display panel. The GOA circuit 320 is coupled to the touch display panel 310 for The GOA signal (for example, but not limited to, the start pulse VST) is received and the GOA signal GOA_S is sent to the touch display panel 310. In the embodiment of this case, there are, for example, 5 or 6 types of GOA signals. For the convenience of display, the starting pulse VST will be used as an example for illustration below, but this case is not limited to this.

The use of GOA technology can effectively reduce the number of pins on the driver chip. GOA designs the function of the gate drive circuit on the array glass of the display panel to reduce the cost and reduce the frame of the whole machine.

The power integrated circuit 330 is coupled to the TDDI 340 and the touch display panel 310. When set in the normal mode, the power integrated circuit 330 can provide power to the TDDI 340 and the touch display panel 310. When set in the power saving mode, the power integrated circuit 330 will be turned off to save power consumption. Therefore, the TDDI 340 provides power to the touch display panel 310 instead.

The TDDI 340 is coupled to the power integrated circuit 330 and the touch display panel 310. TDDI 340 integrates the touch function and the screen drive function. The operation between the power integrated circuit 330 and the TDDI 340 will be described separately below. The TDDI 340 can send a synchronization signal TE to the touch display panel 310. The TDDI 340 can send the display signal D to the touch display panel 310 through the multiplexer circuit 350. The TDDI 340 can send a touch sensing signal TP to the touch display panel 310.

The multiplexer circuit 350 is between the TDDI 340 and the touch display panel 310. The multiplexer circuit 350 includes a plurality of multiplexers. By using the multiplexer circuit 350, the output pins required by the TDDI 340 can be reduced. By controlling the multiplexer circuit 350, To control whether the display signal D sent by the TDDI 340 can be sent to the touch display panel 310.

Please refer to FIG. 4, which shows the power integrated circuit 330 and the TDDI 340 of the wear-through electronic device according to an embodiment of the present case. When set to the normal mode, the power integrated circuit 330 provides the power VCI and VDDIO to the TDDI 340, and the power integrated circuit 330 provides the power OVDD_E and OVSS_E required by the OLED 410 to the OLED 410 in the touch display panel 310.

On the other hand, when set to the power saving mode, the power integrated circuit 330 is turned off. Therefore, the TDDI 340 provides the power supply OVDD_I and OVSS_I required by the OLED 410 to the OLED 410 in the touch display panel 310 instead.

In terms of current consumption, when set to power saving mode, when the touch function is idle, the TDDI 340 itself needs about 0.9mA of current, while OVSS and OVDD are both about 0.23mA. In addition, the touch is idle. The current is about 0.016mA. Therefore, in the power saving mode, TDDI 340 provides approximately 1.376mA when the touch function is idle.

In terms of current consumption, when set to power saving mode, when the touch function is active, TDDI 340 itself requires about 0.9mA of current, while OVSS and OVDD are both about 0.23mA. Therefore, if the touch function is still to be enabled at this time, the required current is about 0.56 mA. Therefore, in the power saving mode, when the touch function is enabled, the TDDI 340 needs to provide about 1.92mA. This current draw is too serious, which will cause the power supply OVDD provided by the TDDI 340 to the OLED to drop, causing the screen The display color difference.

Therefore, in the embodiment of the present invention, when in the power saving mode, the screen display and the touch enable period are staggered to avoid the display color difference on the screen. The details will be explained below.

Please refer to FIG. 5, which shows a signal waveform diagram of a wear-through electronic device according to an embodiment of the present application. The TDDI 340 sends a synchronization signal TE (including a horizontal synchronization signal HSYNC and a vertical synchronization signal VSYNC, the frequency of the vertical synchronization signal VSYNC is 45 Hz as an example, but it is understood that this case is not limited to this) to the touch display panel 310. In Figure 5, the frequency of one frame is 15 Hz, and one frame includes periods T1 and T2.

During the period T1, the GOA signal is turned off (for example, the GOA signal (VST) is pulled high or low). Therefore, the GOA circuit 320 will not output the GOA signal GOA_S to the touch display panel 310. Therefore, the display is idle. That is, in the period T1, the screen of the touch display panel 310 will not be updated. In addition, in the period T1, the multiplexer control signal MUX is disabled to disconnect the multiplexer circuit 350, so the display signal D of the TDDI 340 cannot be sent to the touch display panel 310. In addition, during the period T1, the TDDI 340 can still send the touch sensing signal TP to the touch display panel 310. Therefore, in other words, during the period T1, the touch function can be enabled. Therefore, during the period T1, the display is idle (the display screen has not been updated temporarily) but the touch function can be enabled. As shown in Figure 5, within 45 Hz, the TDDI 340 sends two touch sensing signals TP, that is, the frequency of the touch sensing signal TP is 90 Hz.

In the period T2, the GOA signal is normally sent out, so the GOA circuit 320 can output the GOA signal GOA_S to the touch display panel 310, so the display is OK Is updated, that is, in the period T2, the screen of the touch display panel 310 can be updated. In addition, in the period T2, the multiplexer control signal MUX is enabled to turn on the multiplexer circuit 350. Therefore, the display signal D of the TDDI 340 can be sent to the touch display panel 310. In this way, the display screen can be Update. In addition, in the period T2, the TDDI 340 cannot send the touch sensing signal TP to the touch display panel 310 (for example, by turning off the switch (not shown), the touch sensing signal TP is not sent to the touch display Panel 310), so that the touch function is turned off. Therefore, during the period T2, the display is updated but the touch function is disabled.

As mentioned above, in this embodiment, the timing of the display update and the activation of the touch function is staggered (ie, as shown in T1 and T2 in Figure 5). When set to power saving mode, during the touch function is enabled, since the display is idle (that is, within the period T1), even if the current required for the touch function is about 0.56mA, the TDDI 340 itself needs about 0.9 For a current of mA, TDDI 340 needs to provide about 0.56+0.9=1.45mA. The current draw is slower, and the color difference on the screen can be reduced or reduced. In the period T2, TDDI 340 needs to provide about 1.38mA of current. This current draw is slower, and the color difference on the screen can be reduced or reduced.

In addition, as described above, the period T1 is longer than the period T2, and even the length of the period T1 may be twice the length of the period T2. Alternatively, in other possible embodiments of the present case, the frequency of the period T1 may be 30 Hz, and the frequency of the period T2 may be 45 Hz, which is also within the spirit of the present case.

Therefore, in this embodiment of the invention, when in the power saving mode, the screen display and the touch-enabled period are staggered to reduce or even reduce the display color difference on the screen.

In summary, although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Those who have ordinary knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to those defined by the attached patent application scope.

T1: The first period

T2: Second period

Claims (10)

A wearable electronic device includes: a touch display panel; an array substrate row driving circuit, coupled to the touch display panel, for receiving a first array substrate row driving signal and sending out a second array substrate row Drive signal to the touch display panel; a power integrated circuit coupled to the touch display panel, when set in a normal mode, the power integrated circuit provides power to the touch display panel, when set at In a power saving mode, the power integrated circuit is turned off; a touch display drive integrated circuit, coupled to the power integrated circuit and the touch display panel, when set in the normal mode, the power integrated circuit The touch display drive integrated circuit provides power to the touch display drive integrated circuit. When set in the power saving mode, the touch display drive integrated circuit provides power to the touch display panel, and the touch display drive integrated circuit sends a synchronization signal And a touch sensing signal to the touch display panel; and a multiplexer circuit between the touch display drive integrated circuit and the touch display panel, the touch display drive integrated circuit passes through the multiplexer The circuit sends a display signal to the touch display panel; wherein, when the wearable electronic device is set in the power saving mode, in a first period of a frame, the multiplexer circuit is turned off to make the display The signal is not sent to the touch display panel, and the first array substrate row drive signal is disabled so that the array substrate row drive circuit does not send out the second array substrate row Drive signals to the touch display panel to display idle, the touch display driving integrated circuit sends the touch sensing signal to the touch display panel to enable the touch function, and in a second period of the frame Inside, the multiplexer circuit is turned on so that the display signal is sent to the touch display panel, and the first array substrate row drive signal is enabled to make the array substrate row drive circuit send out the second array substrate row drive Signals are sent to the touch display panel to update the display, and the touch display driving integrated circuit does not send the touch sensing signal to the touch display panel to disable the touch function. The wearable electronic device described in item 1 of the scope of patent application, wherein the first period is longer than the second period. The wearable electronic device described in claim 1, wherein a time length of the first period is twice as long as a time length of the second period. As described in the first item of the patent application, the frequency of the first period is 30 Hz, and the frequency of the second period is 45 Hz. The wear-through electronic device described in claim 1, wherein, in the first period of the frame, the first array substrate row driving signal is pulled up or down, so that the first array substrate The row drive signal is disabled. A wearable electronic device includes: a touch display panel; An array substrate row driving circuit, coupled to the touch display panel, for receiving a first array substrate row driving signal and sending a second array substrate row driving signal to the touch display panel; a power integrated circuit, Coupled to the touch display panel, when set in a normal mode, the power integrated circuit provides power to the touch display panel, when set in a power saving mode, the power integrated circuit is turned off; A touch display drive integrated circuit is coupled to the power integrated circuit and the touch display panel. When set in the normal mode, the power integrated circuit provides power to the touch display drive integrated circuit. In the power saving mode, the touch display drive integrated circuit provides power to the touch display panel, and the touch display drive integrated circuit sends a synchronization signal and a touch sensing signal to the touch display panel; and The multiplexer circuit is between the touch display drive integrated circuit and the touch display panel. The touch display drive integrated circuit sends a display signal to the touch display panel through the multiplexer circuit; wherein, when When the wearable electronic device is set in the power saving mode, in a first period of a frame, the display of the touch display panel is idle and the touch function of the touch display panel is enabled, and in the figure In a second period of the frame, the display of the touch display panel is updated, and the touch function of the touch display panel is disabled. The wearable electronic device described in item 6 of the scope of patent application, wherein the first period is longer than the second period. The wearable electronic device described in item 6 of the scope of patent application, wherein a time length of the first period is twice as long as a time length of the second period. As described in item 6 of the scope of patent application, the frequency of the first period is 30 Hz, and the frequency of the second period is 45 Hz. The wear-through electronic device described in claim 6, wherein, in the first period of the frame, the first array substrate row driving signal is pulled up or down, so that the first array substrate The row drive signal is disabled.

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