Touch display module, touch display screen and electronic equipment

Abstract

The utility model provides a touch display module, a touch display screen and electronic equipment, and relates to the field of touch display. The touch electrode layer is attached to the surface or the interior of the display assembly; and the driving chip is electrically connected with the display assembly and the touch electrode layer, and is used for controlling the display assembly and the touch electrode layer through time-sharing driving to realize a display function and a touch function. According to the touch display module, the display assembly and the touch electrode layer are controlled through the single driving chip, stray capacitance is eliminated from the source, interference of electromagnetic noise generated during operation of the display assembly on the touch electrodes is effectively avoided, and the accuracy and stability of the touch function are ensured.

Description

Technical Field

[0001] The present disclosure relates to the field of touch control, and in particular to a touch display module, a touch display screen, and an electronic device. Background Art

[0002] The On-Cell touch solution integrates touch electrodes directly onto the display's glass surface, seamlessly integrating touch and display functions. However, this design creates parasitic capacitance between the touch and display electrodes. When the display electrodes operate, electromagnetic noise generated by them couples to the touch electrodes through these parasitic capacitances, interfering with the touch signal, reducing the signal-to-noise ratio, and ultimately, the touch function.

[0003] Currently, this interference problem is primarily addressed by optimizing the software algorithms in the touch driver chip to reduce noise interference on the touch electrodes. However, adding software algorithms increases the energy consumption of the touch device and does not fundamentally address the impact of noise on the touch electrodes. Utility Model Content

[0004] The present disclosure provides a touch display module, a touch display screen, and an electronic device to at least solve the above-mentioned technical problems.

[0005] According to a first aspect of the present disclosure, a touch display module is provided, comprising:

[0006] Display component;

[0007] a touch electrode layer, the touch electrode layer being attached to the surface or interior of the display component;

[0008] A driving chip is electrically connected to the display component and the touch electrode layer, and is used to control the display component and the touch electrode layer through time-sharing driving to achieve display function and touch function.

[0009] In one embodiment, the touch display module further includes:

[0010] A display flexible circuit board, used to connect the driver chip and the display component;

[0011] A touch flexible circuit board is used to connect the driving chip and the touch electrode layer.

[0012] In one embodiment, the display assembly includes an upper polarizer, a liquid crystal module, and a lower polarizer;

[0013] The upper polarizer and the lower polarizer are respectively located on the upper and lower sides of the liquid crystal module, and are used to control the polarization direction of light so that light in a specific direction passes through the liquid crystal module to form an image.

[0014] In one embodiment, the touch display module further includes an optical adhesive layer for connecting the touch electrode layer and the display component.

[0015] In one possible implementation manner, the touch display module further includes a touch cover layer; the touch cover layer covers the touch electrode layer and the optical adhesive layer to protect the touch electrode layer.

[0016] In one embodiment, the liquid crystal module includes an upper glass layer, a liquid crystal unit and a lower glass layer; the upper glass layer and the lower glass layer are respectively placed on the upper and lower sides of the liquid crystal unit to protect the liquid crystal unit.

[0017] In one embodiment, the touch electrode layer is disposed on a surface of the upper glass layer.

[0018] In one embodiment, the optical adhesive layer is an OCA optical adhesive layer.

[0019] According to a second aspect of the present disclosure, a touch display screen is provided, which includes the display touch module in the above embodiment.

[0020] According to a third aspect of the present disclosure, an electronic device is provided, comprising the touch display screen in the above embodiment.

[0021] The touch display module, touch display screen and electronic device disclosed herein use a single driver chip to control the display component and touch electrode layer through a time-sharing drive method, eliminating the formation of parasitic capacitance at the source, effectively avoiding interference with the touch electrode caused by electromagnetic noise generated during the operation of the display component, and ensuring the accuracy and stability of the touch function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings, in which several embodiments of the present disclosure are shown by way of example and not limitation, wherein:

[0023] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0024] Figure 1 The schematic diagram of the structure of a touch display module in the embodiment of the present disclosure is shown. Figure 1 ;

[0025] Figure 2 A schematic diagram of the working timing of a driver chip according to an embodiment of the present disclosure is shown;

[0026] Figure 3The schematic diagram of the structure of a touch display module in the embodiment of the present disclosure is shown. Figure 2 ;

[0027] Figure 4 The schematic diagram of the structure of a touch display module in the embodiment of the present disclosure is shown. Figure 3 .

[0028] Description of the numbers in the figure:

[0029] 1. Display component; 2. Touch electrode layer; 3. Driver chip; 4. Display flexible circuit board; 5. Touch flexible circuit board; 6. Optical adhesive layer; 7. Touch cover layer; 11. Upper polarizer; 12. Liquid crystal module; 13. Lower polarizer; 121. Upper glass layer; 122. Liquid crystal unit; 123. Lower glass layer; 1221. Upper alignment film; 1222. Liquid crystal layer; 1223. Lower alignment film; 1224. Display electrode. DETAILED DESCRIPTION

[0030] To make the purposes, features, and advantages of the present disclosure more apparent and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative work shall fall within the scope of protection of the present disclosure.

[0031] Figure 1 A schematic diagram of the structure of a touch display module according to an embodiment of the present disclosure is shown. Figure 1 As shown, the touch display module includes: a display component 1; a touch electrode layer 2, the touch electrode layer 2 is adhered to the surface or inside of the display component 1; a driving chip 3, the driving chip 3 is electrically connected to the display component 1 and the touch electrode layer 2, and is used to time-share drive the display component 1 and the touch electrode layer 2 to realize display function and touch function.

[0032] The display assembly 1 is the core component of the touch display assembly, used to display images or videos. It can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), or other display assembly. The touch electrode layer 2 is a grid or array structure made of conductive material, used to implement the touch function. The touch electrode layer 2 is placed inside the display assembly 1 using on-cell technology or placed on the surface of the display assembly 1 using external technology.

[0033] The driving chip 3 controls the display electrodes and the touch electrode layer 2 in the display component 1 by a time-sharing driving method. Specifically, Figure 2 As shown, when the control signal is at a high level, the display electrodes in the display component 1 are controlled to work to realize the display function. When the control signal is at a low level, the touch electrode layer 2 is controlled to work to realize the touch function.

[0034] The touch display assembly disclosed herein uses a single driver chip 3 to time-share drive the display assembly 1 and touch electrode layer 2. This allows the display electrodes in the display assembly 1 and the touch electrodes in the touch electrode layer 2 to operate independently, eliminating the formation of parasitic capacitance at the source. This effectively prevents electromagnetic noise generated by the operation of the display assembly 1 from interfering with the touch electrodes, ensuring precise and stable touch control. Furthermore, this design eliminates the need for noise suppression algorithms and the need for separate control of the driver chip 3 and its surrounding electronic components for the touch electrodes, reducing software and hardware resource consumption and manufacturing costs.

[0035] In one embodiment of the present disclosure, the touch display module further includes: a display flexible circuit board 4 for connecting the driver chip 3 and the display component 1; and a touch flexible circuit board 5 for connecting the driver chip 3 and the touch electrode layer 2.

[0036] The display flexible circuit board 4 connects the driver chip 3 with the display component 1, transmitting the display control signals generated by the driver chip 3 to the display electrodes of the display component 1 to implement the display function. The touch flexible circuit board 5 connects the driver chip 3 with the touch electrode layer 2, transmitting the touch control signals generated by the driver chip 3 to the touch electrodes of the touch electrode layer 2 to implement the touch function. The use of flexible circuit boards can make the resulting touch display module more lightweight.

[0037] In one embodiment of the present disclosure, Figure 2 As shown, the display component 1 includes an upper polarizer 11, a liquid crystal module 12 and a lower polarizer 13. The upper polarizer 11 and the lower polarizer 13 are respectively located on the upper and lower sides of the liquid crystal module 12; they are used to control the polarization direction of light so that light in a specific direction passes through the liquid crystal module 12 to form an image.

[0038] As light passes through upper polarizer 11, liquid crystal module 12, and lower polarizer 13, only light with a specific polarization direction is visible to the observer. By controlling the arrangement of liquid crystal molecules in liquid crystal module 12, the direction of light is changed, resulting in different transmittances and colors in different areas, thus forming various images.

[0039] In one embodiment of the present disclosure, the touch display module further includes an optical adhesive layer 6 for connecting the touch electrode layer 2 and the display component 1 .

[0040] When the touch electrode layer 2 is placed on the surface of the display assembly 1, that is, when the touch electrode layer 2 is connected to the display assembly 1 using an external mounting technology, the touch electrode layer 2 is bonded to the upper side of the upper polarizer 11 of the display assembly 1 via an optical adhesive layer 6. In one embodiment, the optical adhesive layer 6 is an optically clear adhesive (OCA) layer.

[0041] In one embodiment of the present disclosure, the touch display module further includes a touch cover layer 7 ; the touch cover layer 7 covers the touch electrode layer 2 and the optical adhesive layer 6 to protect the touch electrode layer 2 .

[0042] In one embodiment of the present disclosure, the liquid crystal module 12 includes an upper glass layer 121 , a liquid crystal cell 122 and a lower glass layer 123 ; the upper glass layer 121 and the lower glass layer 123 are respectively placed on both sides of the liquid crystal cell 122 to protect the liquid crystal cell 122 .

[0043] In one embodiment of the present disclosure, Figure 4 As shown, the touch electrode layer 2 is disposed on the upper surface of the upper glass layer 121 .

[0044] When the touch electrode layer 2 is placed inside the display assembly 1 , that is, the touch electrode layer 2 is connected to the display assembly 1 through the On-Cell technology, the touch assembly is disposed on the upper side of the upper glass layer 121 .

[0045] In one embodiment of the present disclosure, the liquid crystal unit 122 includes an upper alignment film 1221 , a liquid crystal layer 1222 , a lower alignment film 1223 and a display electrode 1224 .

[0046] To better understand the structure of the touch display module mentioned in the above embodiment, two specific implementations are provided below for illustration:

[0047] The first type is the external touch display module, such as Figure 3 As shown, the structure of the touch display module is, from top to bottom, a touch cover layer 7, a touch electrode layer 2, an optical adhesive layer 6, an upper polarizer 11, an upper glass layer 121, an upper alignment film 1221, a liquid crystal layer 1222, a lower alignment film 1223, a display electrode 1224, a lower glass layer 123, a lower polarizer 13, a display flexible circuit board 4, a touch flexible circuit board 5 and a driving chip 3, wherein the driving chip 3 is connected to the display electrode 1224 through the display flexible circuit board 4, and is connected to the touch electrode layer 2 through the touch flexible circuit board 5, thereby realizing time-sharing driving of the display electrode 1224 and the touch electrode layer 2.

[0048] The second type is the On-Cell touch display module, such as Figure 4 As shown, the structure of the touch display module is, from top to bottom, an upper polarizer 13, a touch electrode layer 2, an upper glass layer 121, an upper alignment film 1221, a liquid crystal layer 1222, a lower alignment film 1223, a display electrode 1224, a lower glass layer 123, a lower polarizer 13, a display flexible circuit board 4, a touch flexible circuit board 5 and a driving chip 3, wherein the driving chip 3 is connected to the display electrode 1224 through the display flexible circuit board 4, and is connected to the touch electrode layer 2 through the touch flexible circuit board 5, thereby realizing time-sharing driving of the display electrode 1224 and the touch electrode layer 2.

[0049] Another aspect of the present disclosure provides a touch display screen, which includes the display touch module in the above embodiment.

[0050] Another aspect of the present disclosure provides an electronic device comprising the touch display screen of the above embodiment. The electronic device may specifically be a smart phone, a tablet computer, a laptop computer, etc.

[0051] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. This is not a limitation herein.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0053] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A touch display module, characterized in that: The touch display module includes: Display component (1); A touch electrode layer (2), the touch electrode layer (2) being adhered to the surface or interior of the display component (1); A driving chip (3) is electrically connected to the display component (1) and the touch electrode layer (2), and is used to control the display component (1) and the touch electrode layer (2) through time-sharing driving to achieve display and touch functions.

2. The touch display module according to claim 1, wherein: The touch display module also includes: A display flexible circuit board (4) for connecting the driving chip (3) and the display assembly (1); A touch flexible circuit board (5) is used to connect the driving chip (3) and the touch electrode layer (2).

3. The touch display module according to claim 1 or 2, wherein: The display assembly (1) comprises an upper polarizer (11), a liquid crystal module (12) and a lower polarizer (13); The upper polarizer (11) and the lower polarizer (13) are respectively located on the upper and lower sides of the liquid crystal module (12) and are used to control the polarization direction of light so that light in a specific direction passes through the liquid crystal module (12) to form an image.

4. The touch display module according to claim 1, wherein: The touch display module further comprises an optical adhesive layer (6) for connecting the touch electrode layer (2) and the display component (1).

5. The touch display module according to claim 4, wherein: The touch display module also includes a touch cover layer (7); The touch cover layer (7) covers the touch electrode layer (2) and the optical adhesive layer (6) and is used to protect the touch electrode layer (2).

6. The touch display module according to claim 3, wherein: The liquid crystal module (12) comprises an upper glass layer (121), a liquid crystal unit (122) and a lower glass layer (123); The upper glass layer (121) and the lower glass layer (123) are respectively placed on the upper and lower sides of the liquid crystal unit (122) to protect the liquid crystal unit (122).

7. The touch display module according to claim 6, wherein: The touch electrode layer (2) is arranged on the surface of the upper glass layer (121).

8. The touch display module according to claim 4, wherein: The optical adhesive layer (6) is an OCA optical adhesive layer.

9. A touch display screen, characterized in that: The touch display screen includes the touch display module according to any one of claims 1 to 8.

10. An electronic device, characterized in that: The electronic device includes the touch display screen according to claim 9.

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