CN204406374U - A kind of antistatic, embedded touch capacitance plate - Google Patents

Abstract

The utility model discloses an antistatic, embedded touch capacitive screen, which comprises an upper glass substrate, one surface of the upper glass substrate is provided with a color filter, and the other surface is plated with a driving ITO layer. The surface of the color filter is plated with an inductive ITO layer, the inductive ITO layer is a pattern formed by the horizontal arrangement of electrodes with small prismatic structures, and the prismatic electrodes on the same horizontal row are connected sequentially by electrode lines, and the drive The ITO layer is a pattern of small prismatic electrodes arranged longitudinally, and the prismatic electrodes on the same vertical row are connected sequentially by electrode lines, and the sensing ITO layer and the prismatic electrodes of the driving ITO layer are in a complementary form Arranged into an XY coordinate matrix. The utility model integrates the touch screen function into the liquid crystal module by plating and engraving the ITO layer on the surface of the color filter and the upper glass substrate, reduces the number of layers of ITO conductive glass, effectively reduces the thickness of the touch capacitive screen, and saves Low cost, and supports multi-touch, high sensitivity.

Description

An antistatic, embedded touch capacitive screen

technical field

The utility model relates to the field of capacitive touch screens, in particular to an antistatic, embedded touch capacitive screen.

Background technique

The touch screen is mainly composed of a touch detection component and a touch screen controller. The touch detection component is installed in front of the display screen to detect the user’s touch position, and then send it to the touch screen controller after receiving it. The main function of the touch screen controller is to receive from the touch point detection device. Touch information, convert it into contact coordinates, and then send it to the CPU, and it can receive and execute commands from the CPU at the same time.

Touch screens can be divided into resistive touch screens, capacitive touch screens, infrared touch screens and surface acoustic wave touch screens. Capacitive touch screens are a new touch screen technology, mainly composed of driving electrodes and receiving electrodes. The driving electrodes emit low-voltage high-frequency signal projections When the human body touches the capacitive screen, the finger and the capacitive screen form an equivalent capacitance because the human body is grounded, and the high-frequency signal can flow into the ground wire through this equivalent capacitance, so the receiving end The amount of charge received decreases, and when the finger is closer to the transmitting end, the charge decreases more obviously, and finally the touched point is determined according to the current intensity received by the receiving end. Due to the excellent performance of the capacitive touch screen, it is widely used in electronic products with touch devices such as mobile phones, tablet computers, and LCD TVs.

Many existing capacitive touch screens have a three-layer structure, that is, a layer of shielding layer is pasted on the surface of the display panel (usually a liquid crystal panel), and then two layers of Sensor are pasted, and finally the soft board, touch screen IC, protective glass, etc. are pressed together to form a touch module. This structure requires two pieces of glass as a sensor, which will result in a relatively large thickness of the touch module, a more complicated structure, and relatively lower performance.

Utility model content

The purpose of the utility model is to provide an anti-static and built-in touch capacitive screen with simple structure and light and thin in view of the above problems.

In order to achieve the above object, the utility model adopts the following technical solutions:

An antistatic, embedded touch capacitive screen, comprising a lower glass substrate, an upper glass substrate, and a liquid crystal layer located between the lower glass substrate and the upper glass substrate, the upper glass substrate is close to the liquid crystal layer The surface of the upper glass substrate is also provided with a color filter, the surface of the color filter in contact with the liquid crystal layer is coated with a sensing ITO layer, and the surface of the upper glass substrate away from the liquid crystal layer is coated with a driving ITO layer. layer, the sensing ITO layer is a pattern formed by the horizontal arrangement of electrodes with small prismatic structures, and the prismatic electrodes on the same row are sequentially connected by electrode lines, and the driving ITO layer is composed of small prismatic structures. The electrodes are arranged vertically in a pattern, and the prismatic electrodes on the same vertical row are sequentially connected by electrode lines, and the prismatic electrodes of the sensing ITO layer and the driving ITO layer are arranged in a complementary form to form an X-Y coordinate matrix.

Further, a glass cover plate is also included, and the glass cover plate is located above the driving ITO layer.

Further, the upper glass substrate is also connected with a control IC through adhesive bonding, and the electrode lines on the sensing ITO layer and the driving ITO layer are respectively connected with the control IC.

Further, the sensing ITO layer is connected to the upper glass substrate through an optically transparent glue, and the driving ITO layer is also connected to the upper glass substrate and the glass cover plate through an optically transparent glue.

Further, the surface of the upper glass substrate connected to the sensing ITO layer and the driving ITO layer is also coated with an ink layer.

Implementing the utility model has the following beneficial effects: the utility model integrates the touch screen function into the liquid crystal module by plating and engraving the ITO layer on the surface of the color filter and the upper glass substrate, thereby reducing the number of layers of ITO conductive glass, effectively reducing the The thickness of the touch capacitive screen simplifies the product structure, reduces the difficulty of the process, saves materials, saves costs, and reduces the placement space. It also supports multi-touch and has high sensitivity.

Description of drawings

    Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the arrangement of the ITO layers of the utility model.

In the figure: 1. Lower glass substrate; 2. Liquid crystal layer; 3. Sensing ITO layer; 4. Color filter; 5. Upper glass substrate; 6. Driving ITO layer; 7. Glass cover plate; 8. Pressing and bonding Glue; 9. Control IC.

Detailed ways

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings.

As shown in FIG. 1 , an antistatic, embedded touch capacitive screen includes a lower glass substrate 1, an upper glass substrate 5, and a liquid crystal layer 2 between the lower glass substrate 1 and the upper glass substrate 5, A layer of glass cover 7 is also arranged above the upper glass substrate 5, and the upper glass substrate 5 is also provided with a color filter 4 on the surface close to the liquid crystal layer 2, the upper and lower surfaces of the upper glass substrate 5 shown Both are coated with a layer of ink, which plays an insulating role. The surface of the color filter 4 in contact with the liquid crystal layer 2 is pasted with a layer of ITO film through an optically transparent adhesive. The surface of the liquid crystal layer 2 is also pasted with a layer of ITO film through an optically transparent glue, and the ITO film is plated and engraved to form a driving ITO layer 6, and the driving ITO layer 6 is connected to the glass cover 7 through an optically transparent glue. The glass cover 7 protects the liquid crystal module and the touch screen below it. The upper glass substrate 5 is also connected with a control IC 9 through a bonding glue 8 .

As shown in Figure 2, the induction ITO layer 3 is a pattern formed by the lateral arrangement of electrodes of small prismatic structures, and the prismatic electrodes on the same horizontal row are connected sequentially by electrode lines, and the driving ITO layer 6 is composed of A pattern of small prismatic electrodes arranged vertically, the prismatic electrodes on the same vertical row are sequentially connected by electrode lines, the sensing ITO layer 3 and the prismatic electrodes of the driving ITO layer 6 are in a complementary form Arranged into an X-Y coordinate matrix. The electrode lines on the sensing ITO layer 3 and the driving ITO layer 6 are respectively connected to the control IC 9 . When the finger touches the touch screen, the finger draws a small current from the contact point, and this current flows out from the electrode lines of the sensing ITO layer 3 and the driving ITO layer 6 to the control IC9 respectively, and the control IC9 passes through Precisely calculate to obtain the position information of the touch point.

The utility model is not limited to the above-mentioned specific implementation, anyone can draw other various forms of products under the enlightenment of the present utility model, the above-mentioned specific implementation is only illustrative, rather than restrictive, those skilled in the art Under the enlightenment of the utility model, those skilled in the art can also make many forms without departing from the purpose of the utility model and the protection scope of the claims, and these all belong to the protection of the utility model.

Claims (5)

1. An antistatic, embedded touch capacitive screen, comprising a lower glass substrate (1), an upper glass substrate (5) and a glass substrate located between the lower glass substrate (1) and the upper glass substrate (5) Liquid crystal layer (2), the upper glass substrate (5) is also provided with a color filter (4) on the surface close to the liquid crystal layer (2), characterized in that: the color filter (4) is The surface in contact with the liquid crystal layer (2) is plated with a sensing ITO layer (3), and the surface of the upper glass substrate (5) far away from the liquid crystal layer (2) is plated with a driving ITO layer (6), The sensing ITO layer (3) is a pattern of small prismatic electrodes arranged laterally, and the prismatic electrodes on the same horizontal row are sequentially connected by electrode lines, and the driving ITO layer (6) is composed of small The electrodes of the prismatic structure are vertically arranged in a pattern, and the prismatic electrodes on the same vertical row are sequentially connected by electrode lines, and the prismatic electrodes of the sensing ITO layer (3) and the driving ITO layer (6) are complementary Arranged in the form of X-Y coordinate matrix. 2. An antistatic, in-cell capacitive touch screen according to claim 1, characterized in that it also includes a glass cover (7), and the glass cover (7) is located on the driving ITO layer ( 6) above. 3. An antistatic, built-in capacitive touch screen according to claim 1, characterized in that: the upper glass substrate (5) is also connected with a control IC (9) by pressing glue (8) ), the electrode lines on the sensing ITO layer (3) and the driving ITO layer (6) are respectively connected to the control IC (9). 4. An antistatic, embedded touch capacitive screen according to claim 1, characterized in that: the sensing ITO layer (3) is connected to the upper glass substrate (5) through an optically transparent adhesive, The driving ITO layer (6) is also respectively connected to the upper glass substrate (5) and the glass cover (7) through optically transparent glue. 5. An antistatic, embedded touch capacitive screen according to claim 1, characterized in that: the upper glass substrate (5) is in contact with the sensing ITO layer (3) and the driving ITO layer (6) The connected surface is also coated with an ink layer.