TWI506340B - Touch control display and electronic equipment - Google Patents

Description

Touch display screen and electronic device

The present invention relates to the field of electronic device technologies, and in particular, to a touch display screen and an electronic device.

With the development of the touch display technology, the capacitive touch display screen is more and more widely used. The touch display screen of the existing electronic device generally includes a display layer and a touch sensing layer, and the display layer includes a liquid crystal display. An electrode (hereinafter referred to as a display electrode) such as a picture element electrode, a common electrode, and a thin film field effect transistor (TFT) array, etc., includes an electrode for detecting a touch of the touch display screen on the touch sensing layer (hereinafter referred to as an electrode) Touch sensing electrode), including a driving electrode and a receiving electrode. In the traditional touch display screen, the display layer and the touch sensing layer are two independent individuals, and are controlled by different control modules, and are not interfered with each other.

At present, in order to make the touch display screen relatively thin and light, the touch sensing layer and the display layer are integrated, and the display and touch sensing are detected by the same control module in a time-sharing manner, so that the integrated display layer and the touch sensing layer are integrated. There is no mutual interference between them, but the period of detection of display and touch sensing is mutually limited. As the size of the touch display screen increases, the restriction is greater, which may affect the performance of the touch display screen.

Embodiments of the present invention provide a touch display screen and an electronic device, which reduce the limitation between display and touch sensing detection to improve the performance of the touch display screen.

The embodiment of the invention provides a touch display screen, comprising: a display electrode, a touch sensing electrode and a control module; the control module is connected to the display electrode and the touch sensing electrode, and is used in the display electrode And a line gap for controlling the operation of the control electrode for displaying the data transmission on the touch display screen, triggering the touch sensing electrode to work.

An embodiment of the present invention provides an electronic device, where the electronic device includes a touch display screen, and the touch display screen includes: a display electrode, a touch sensing electrode, and a control module; and the control module connects the display The electrode and the touch sensing electrode are used to control a line gap of the control electrode for controlling the data transmission of the touch display screen in the display electrode, and trigger the touch sensing electrode to operate.

In the touch display screen of the embodiment of the invention, the control module displays the line gap of the data transmission on the display of the touch display screen, and triggers the touch sensing electrode to work, so that the data transmission on the touch display screen can be fully utilized. The small gap, that is, the line gap, is used for detecting the touch sensing, so that the fineness of the detection of the touch sensing is reduced, thereby reducing the limitation between the display and the detection of the touch sensing, thereby improving the performance of the touch display screen.

10‧‧‧ Cover

11‧‧‧Color filters

12‧‧‧Touch sensing layer

13‧‧‧Common electrode

132‧‧‧Box glue

130‧‧‧liquid crystal molecules

131‧‧‧ spacer particles

14‧‧‧Other display electrodes

15‧‧‧Substrate

16‧‧‧ Backlight

17‧‧‧Lower polarizer

18‧‧‧Optical adhesive

19‧‧‧Upper Polarizer

20‧‧‧Control Module

21‧‧‧ Cover

22‧‧‧Color filters

24‧‧‧Touch sensing electrodes

25‧‧‧Substrate

26‧‧‧ Backlight

27‧‧‧Control Module

230‧‧‧ liquid crystal molecules

231‧‧‧ spacer particles

232‧‧‧Box glue

1 is a schematic diagram of a control module control signal in a touch display screen according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a touch display screen according to an embodiment of the present invention; FIG. 4A is a structural diagram of the operation of the control electrode and the touch sensing electrode in the display electrode included in the touch display screen according to the embodiment of the present invention; FIG. 4b is an implementation of the present invention. For example, the touch display screen includes a relationship between the control electrode and the touch sensing electrode in the display electrode. FIG. 5 is a schematic diagram of the control electrode and the touch sensing electrode in the touch display screen provided by the embodiment of the invention. .

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

A touch display screen according to an embodiment of the invention is mainly directed to The touch display screen of the In-cell type may specifically include: a display electrode, a touch sensing electrode, and a control module; and a control module, which is connected to the display electrode and the touch sensing electrode, and is used for controlling the touch in the display electrode. The display screen displays the line gap of the control electrode working on the data transmission, and triggers the touch sensing electrode to work.

It can be understood that the control module uses the control signal to control the display of the touch display screen when controlling the control electrode in the display electrode, and uses the driving signal to control the touch sensing of the touch display screen when controlling the operation of the touch sensing electrode. When controlling the display electrode, the control module first turns on the control signal of the data transmission on the line of the touch display screen. When one line of display data is transmitted and displayed on the touch display screen, another line is displayed to display the data transmission control. The signal is repeated until the display data of all the lines on the touch display screen is transmitted, that is, the transmission of the display data of one frame is completed. For example, if the resolution of a touch display screen is 800*480, that is, the transmission of 800 lines of display data, it is necessary to loop 800 times to complete the transmission of one frame of display data. Wherein, the line gap refers to the time gap between the control electrode for controlling the data transmission on the line of the touch display screen and the control electrode for controlling the data transmission on the other line of the touch display screen, and there is no gap in the line gap. The transmission of any displayed material.

It can be seen that, in the touch display screen of the embodiment of the invention, the control module displays the line gap of the data transmission on the upper side of the touch display screen, and triggers the touch sensing electrode to work, so that the touch display screen can be fully utilized. The small gap that is transmitted, that is, the line gap, is used for detecting the touch sensing, so that the fineness of the detection of the touch sensing is reduced, thereby reducing the The limitation between display and touch-sensitive detection improves the performance of the touch display.

In order to further reduce the limitation between the display and the detection of the touch sensing, the control module in the embodiment is further configured to control, in the display electrode, a frame for controlling the operation of the control electrode for displaying the data on the touch display screen. The gap triggers the touch sensing electrode to work. The frame gap refers to a time gap between the control electrode for controlling the transmission of a frame of data on the touch display screen and the control electrode for controlling the data transmission of another frame on the touch display screen, within the frame gap. There is no transmission of any displayed data.

It should be noted that the control module in this embodiment is not limited to triggering the operation of the touch sensing electrode in the frame gap, but can trigger the touch sensing electrode in any manner in the line gap and/or the frame gap. Work, so that you can make full use of the gap between the data displayed on the touch screen to detect the touch. For example, referring to FIG. 1 , when the first control signal for controlling the frame display data transmission on the touch display screen is at a high level, the control module can control the transmission of the display data by controlling the second control signal, wherein The second control signal is used for controlling the transmission of the display data on the touch display screen; when the first control signal is a low level, that is, a frame gap, the control module triggers the operation of the touch sensing electrode, that is, the driving signal is high. level. And when the second control signal is a low level or a line gap, the control module can also trigger the operation of the touch sensing electrode, that is, the driving signal is at a high level. The primitive display clock shown in FIG. 1 above refers to a control signal when the touch display screen displays each primitive, and the control module can also control the display clock of the primitive.

In a practical application, the structure between the display electrode, the touch sensing electrode, and the control module in the touch display screen may include, but is not limited to, the following two methods. The touch display screen is generally used in an electronic device:

(1) Display electrodes and touch sensing electrodes are respectively disposed on two layers

Referring to FIG. 2, the touch display screen may include: a cover plate 10 stacked from top to bottom, a color filter 11, a touch sensing layer 12, a common electrode 13 in the display electrode, a liquid crystal layer, and other displays. The electrode 14, the substrate 15 and the backlight 16, the control module 20 are respectively connected to the touch sensing layer 12, the common electrode 13 in the display electrode and the other display electrodes 14, wherein the direction of the outer surface of the electronic device is upward, and the direction of the inner surface of the electronic device In order to realize the liquid crystal display, in order to convert the circularly polarized light into linearly polarized light, it is necessary to separately provide a polarizer on the color filter 11 and under the substrate 15, specifically, the cover 10 and the color filter 11 An upper polarizer 19 is disposed between the upper polarizer and the substrate 15 with a lower polarizer 17 disposed between the backlight 16 and the substrate 15.

The color filter 11 can display a color picture on the touch display screen, mainly including red, blue and green filter areas. The liquid crystal layer includes liquid crystal molecules 130 and spacer particles 131. The liquid crystal molecules 130 and the spacer particles 131 may be disposed between the common electrode 13 and the other display electrodes 14 in the display electrode through the sealant 132, wherein the spacer particles 131 may support The color filter 11 prevents the color filter 11 from being deformed and provides a certain In the liquid crystal rotation space, the sealant 132 is used to bond the color filter 11 and the substrate 15 to form a sealed space. The common electrode 13 and other display electrodes 14 are electrodes for realizing liquid crystal display, and the common electrode 13 and other display electrodes 14 may be Indium Tin Oxides (ITO) having good transparency and conductivity.

(2) The display electrode and the touch sensing electrode are disposed on the same layer. In this case, the touch sensing electrode can multiplex the display electrode, thereby further reducing the thickness of the touch display screen.

Referring to FIG. 3, the touch display screen may include: a cover plate 21 stacked from top to bottom, a color filter 22, a liquid crystal layer, a display electrode and a touch sensing electrode layer 24, a substrate 25, and a backlight 26 The control module 27 is connected to the display electrode and the touch sensing layer 24. Specifically, an upper polarizer 19 may be disposed between the cover 21 and the color filter 22, and the upper polarizer may be pasted by the transparent optical adhesive 18. On the inner surface of the cover plate 21; a lower polarizer 17 is disposed between the backlight 26 and the substrate 25; the liquid crystal layer includes liquid crystal molecules 230 and spacer particles 231, and the liquid crystal molecules 230 and the spacer particles 231 can be disposed through the sealant 232. The color filter 22 is interposed between the display electrode and the touch sensing electrode 24.

In a specific embodiment, the touch sensing electrode includes a driving electrode and a corresponding receiving electrode. The control module can trigger the driving of the driving electrode by driving the signal when the touch sensing electrode is activated, and detect the corresponding receiving. Electrodes for detection of touch sensing. The control module can trigger a single driving electrode by a single driving signal in a line gap or a frame gap, or can trigger multiple signals by multiple driving signals respectively. Strip drive electrode. In this way, when the display data of one frame on the touch display screen is transmitted, some or all of the driving electrodes of the touch sensing electrode have been triggered, and the corresponding receiving electrodes are detected, and one or more frames are realized. Or detection of a part of the touch sensing electrodes in one frame.

Further, in order to realize the diversity of the touch display screen, the control module uses the driving signal used when the touch sensing electrode is activated in the line gap, and the control module uses the touch sensing electrode when the frame gap is triggered to work. The driving signals may be the same or different; and the first driving signal used by the control module to trigger the touch sensing electrode to operate in a line gap is used when the control module triggers the touch sensing electrode to work in another line gap. The second drive signals can be the same or different. The driving signal may include, but is not limited to, an electrical signal of any one of the following waveforms: a square wave, a sine wave, a sawtooth wave, etc., and the difference in the driving signal means that the signal period is different and/or the waveform of the signal is different.

And the control module can trigger the touch sensing electrode to work in each line gap, or can trigger the touch sensing electrode to work in a line gap from the preset line. For example, as shown in FIG. 4a, when the control signal for controlling the line display data transmission is at any low level, the control module triggers the touch sensing electrode to work; as shown in FIG. 4b, when used for controlling the line display After the control signal of the data transmission is at a low level, the control module will trigger the operation of the touch sensing electrode after passing two low levels.

It should be further noted that the control module can control the line gap and/or the frame gap to trigger the touch sensing electrode to perform the work. The control mode can be configured in advance or through another master control. The module is set so that the control module can select to trigger the touch control electrode to work in the frame gap and/or the line gap according to the setting of the main control module. Referring to FIG. 5, in this case, the control of the display electrode and the touch sensing electrode in the touch display screen mainly has the following steps: the control module first passes according to the setting of the main control module. The control signals of the line and frame display data transmission control the operation of the control electrode in the display electrode, and select to trigger the touch control signal to control the touch sensing electrode to perform the operation in the line gap and/or the frame gap; and in this process, the control mode The group can display the display data transmitted after the touch sensing by the touch display screen.

The embodiment of the present invention further provides an electronic device, including the touch display screen described in the foregoing embodiment, and details are not described herein.

The touch display screen and the electronic device provided by the embodiments of the present invention are described in detail. The principles and embodiments of the present invention are described in the following. The description of the above embodiments is only for helping to understand the present invention. The method and its core idea; at the same time, those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of the specification should not be understood as Limitations of the invention.

Claims (10)

A touch display screen includes: a display electrode, a touch sensing electrode, and a control module; the control module is connected to the display electrode and the touch sensing electrode, and is used for controlling the touch display in the display electrode The line on the screen shows the line gap of the control electrode working for data transmission, triggering the touch sensing electrode to work. The touch display screen of claim 1, wherein the control module is further configured to: in the display electrode, control a frame gap of a control electrode for displaying the data transmission on the touch display screen, trigger the touch Control the sensing electrode to work. The touch display screen of claim 2, wherein the control module is further configured to select to trigger the touch control electrode to operate in a frame gap and/or a line gap. The touch display screen of claim 2, wherein the control module triggers the driving signal used when the touch sensing electrode is operated in a line gap, and the control module triggers the touch sensing electrode to work in a frame gap. The drive signals used are the same or different. The touch display screen of claim 1, wherein the control module triggers the first driving signal used when the touch sensing electrode operates in a line gap, and triggers the touch with the control module in another line gap. The second driving signals used when the sensing electrodes are operated are the same or different. The touch display screen of claim 4 or 5, wherein the drive signal comprises an electrical signal of any of the following waveforms: a square wave, a sine wave, and a sawtooth wave. The touch display screen of any one of claims 1 to 5, wherein the touch sensing electrode comprises a driving electrode and a corresponding receiving electrode; the control module is specifically configured to trigger the plurality of or single driving by a driving signal The electrodes operate and detect the corresponding receiving electrodes. The touch display screen of any one of claims 1 to 5, wherein the control module is configured to trigger the touch sensing electrode to work in each of the line gaps, or for the line in the preset line The touch sensing electrode is triggered to operate in the gap. The touch display screen of any one of claims 1 to 5, wherein the display electrode and the touch sensing electrode are respectively disposed on two layers, or are disposed on the same layer, or are disposed on the same layer and the touch The sensing electrode multiplexes the display electrode. An electronic device comprising: the touch display screen of any one of claims 1 to 9.