An improved method and structure for a single-layer capacitive touch screen

Abstract

The embodiment of the invention discloses an improvement technique and an improvement structure for a single layer capacitive touch screen. The technique comprises the following steps that a compensation layer is arranged under the inner surface of a covering layer of the single layer capacitive touch screen; the area of the arranged compensation layer at least comprises the areas except for a light-proof area; and relative dielectric constant of the compensation layer is matched with that of the light-proof area of the single layer capacitive touch screen. By the improvement technique for the single layer capacitive touch screen, by the arrangement of the compensation layer of which the relative dielectric constant is matched with that of the light-proof area under the inner surface of the covering layer of the single layer capacitive touch screen, and by the optimal arrangement of the compensation layer of which the relative dielectric constant is the same as that of the light-proof area, coupling capacitance and coupling capacitance variation of a visible area and the light-proof area in the single layer capacitive touch screen are the consistent, so that reporting accuracy of the light-proof area is improved.

Description

technical field [0001] The invention relates to the technical field of capacitive screen manufacturing, and more specifically, relates to an improved method and structure for a single-layer capacitive touch screen. Background technique [0002] Capacitive screen is a mobile terminal screen type that has risen rapidly after the application of resistive screen, and is widely used in mobile terminals. There are many types of capacitive screens, and the structure of the single-layer mutual-capacitance touch screen is realized by a single-layer nano-indium tin metal oxide ITO1, combined with Figure 1a-Figure 1b As shown: the visible area 2 is for the user to realize human-computer interaction, and an opaque area 3 is set on the edge of the visible area 2, which is used to block the components driving the visible area 2, see Figure 1b , the single-layer mutual-capacitance touch screen is also provided with a covering layer 4. This structure uses the principle of a mutual-capacit...

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Problems solved by technology

[0003] Taking the existing single-layer mutual capacitance touch screen as an example, the relative permittivity of the opaque region 3 is different from that of the cover layer 4, so the visible region 2 and the opaque The variation of the coupling capacitance value in area 3 will be different when detecting the touch point, so that the touch point is detected in the opaque area 3, and the same point reporting conditions will cause the technical problem of inaccurate point reporting data.

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