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A capacitive touch screen with polarizing function

A capacitive touch screen, functional technology, applied in the direction of electrical digital data processing, data processing input/output process, instruments, etc., can solve the problem that the polarization state of polarized light affects the normal display of the flat panel display screen, so as to ensure normal display and improve electrical conductivity The effect of high reliability and low manufacturing cost

Active Publication Date: 2016-12-07
SHANTOU GOWORLD DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, it was proposed to place the polarizing layer of the flat panel display in front of the capacitive touch screen to reduce the above-mentioned reflected light. Uncontrollable non-zero birefringence will cause the polarization state of polarized light to change and affect the normal display of the flat panel display screen. Therefore, it is difficult to use this method of pre-polarizing layer to achieve the purpose of eliminating reflected light.

Method used

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  • A capacitive touch screen with polarizing function
  • A capacitive touch screen with polarizing function
  • A capacitive touch screen with polarizing function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 and figure 2 As shown, this capacitive touch screen with polarizing function adopts a single-layer electrode design, including a transparent substrate 1, a sensing layer 2 disposed inside the transparent substrate 1, a polarizing layer 3, and a masking layer 4 disposed around the sensing layer 2; figure 2 As shown, the sensing layer 2 includes a flexible and transparent circuit support layer 201 and a sensing circuit 202 disposed on the circuit support layer 201; the polarizing layer 3 is disposed between the transparent substrate 1 and the sensing layer 2; the circuit support layer 201 is zero Birefringent plastic films such as image 3 and Figure 4 As shown, the outer surface of the circuit support layer 201 is provided with a plurality of grooves 5, and the plurality of grooves 5 are interlaced to form a network; the grooves 5 are filled with fine conductive particles 6 (for example, the diameter of the particles can be selected to be about 20-1...

Embodiment 2

[0032] Such as Figure 5As shown, in the case that other parts are the same as the first embodiment, the difference is that the circuit support layer 201 includes a first circuit support layer 2011 and a second circuit support layer 2012 bonded to each other, and the induction circuit 202 includes a first induction circuit Circuit 2021 and second sensing circuit 2022, the first sensing circuit 2021 is set on the first circuit support layer 2011, the second sensing circuit 2022 is set on the second circuit support layer 2012, and then the first circuit support layer 2011, the second The circuit support layer 2012 is glued together, so that the double-layer electrode design with more sensing points in capacitive touch technology can be adopted.

[0033] Such as Figure 6 and Figure 7 As shown, the first sensing circuit 2021 on the first circuit supporting layer 2011 is designed as parallel electrodes extending along the Y direction, and the second sensing circuit 2022 on the ...

Embodiment 3

[0035] Such as Figure 8 As shown, in the case that other parts are the same as the first embodiment, the difference is that the induction circuit 202 includes a first induction circuit 2021 and a second induction circuit 2022, and the first induction circuit 2021 and the second induction circuit 2022 are respectively arranged in both sides of the circuit support layer 201, so that it can be used as Figure 6 and Figure 7 In addition to the double-layer electrode design with more sensing points shown, it also results in fewer layers and lower reflectivity.

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Abstract

The invention relates to a capacitive touch screen with a light polarization function. The capacitive touch screen comprises a transparent substrate and a sensing layer arranged on the inner side of the transparent substrate, and the sensing layer comprises at least one circuit support layer and sensing circuits arranged on the circuit support layers. The capacitive touch screen is characterized by further comprising a light polarization layer arranged between the transparent substrate and the sensing layer, two sides of the light polarization layer are glued with the inner side of the transparent substrate and the outer side of the sensing layer respectively via bonding layers, the circuit support layers are made of zero-birefraction plastic films, a plurality of grooves staggering into a net are formed on at least one side of each circuit support layer, tiny conductive particles are filled in the grooves and are mutually connected to form net-shaped fine conductive lines, and the net-shaped fine conductive lines form the sensing circuits. Since the plastic poor in heat resistance and with a zero-birefraction character can be selected as the circuit support layers, a light polarization state of polarized light generated by the light polarization layer is guaranteed not to be affected, normal displaying of images is guaranteed, and the capacitive touch screen is simple in manufacturing process and low in manufacturing cost.

Description

technical field [0001] The invention relates to a capacitive touch screen, in particular to a capacitive touch screen with a polarizing function. Background technique [0002] The projected capacitive touch screen has the advantages of high sensitivity and multi-touch capability, and has been widely used in various consumer electronic products such as mobile phones and tablet computers. At present, projected capacitive touch screens have various structures such as single-layer glass, double-layer glass, and film type. Among them, the capacitive touch screen with film type structure generally first passes a transparent oxide conductive film (such as indium tin oxide) through a high-temperature vacuum deposition process. It is plated on a high-temperature-resistant PET (Polyethylene terephthalate) transparent plastic film, and then patterned into a sensing circuit (including sensing electrodes and peripheral circuits) for capacitive touch sensing, and finally attached to the P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 沈奕吴永俊吕岳敏杨秋强黄贵松杜训新王书明姜华
Owner SHANTOU GOWORLD DISPLAY TECH CO LTD
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