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Touch screen and touch sensing method

A touch screen and touch position technology, applied in the fields of instruments, computing, electrical and digital data processing, etc., can solve the problems of increasing the driving voltage of the touch screen, weakening the sensing signal of the touch screen, and increasing the touch response time, so as to achieve user identification and encryption. function, overcome the long charging and discharging time, and achieve the effect of large size

Active Publication Date: 2016-01-13
LENOVO (BEIJING) LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some defects in capacitive touch screens. For example, capacitive touch screens usually use the principle of coupling capacitance formed between conductive electrodes and the human body to determine the touch position. Or the influence of the resistance value of the wire. When the size of the touch screen is large, the resistance value is large, which leads to an increase in the touch response time and affects the user experience. In addition, in this case, it is usually necessary to increase the driving voltage of the touch screen, so that Lead to increased power consumption, otherwise the sensing signal of the touch screen will be weakened, resulting in missed user touches

Method used

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Embodiment Construction

[0014] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this specification and the drawings, substantially the same elements and functions will be denoted by the same reference numerals, and repeated descriptions of these elements and functions will be omitted. Also, descriptions of functions and constructions that are well known in the art may be omitted for clarity and conciseness.

[0015] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] First refer to figure 1 and figure 2 The touch screen 10 according to the embodiment of the present invention will be described in detail. figure 1 is a block diagram showing the overall configuration of the touch panel 10 according to the embodiment of the present invention. figure 2 is a diagram schematically showing the touch panel 10 according to the embodiment...

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Abstract

The invention discloses a touch screen. The touch screen comprises a protecting panel, a substrate, a signal emitting unit and a signal analyzing unit. The protecting panel is arranged to protect assemblies below the protecting panel; the substrate is provided with a plurality of first wires and a plurality of second wires, wherein the multiple first wires are arranged at preset intervals in the first direction, the multiple second wires are arranged at preset intervals in the second direction, and the first direction and the second direction are different; the signal emitting unit is configured to serve as a first signal source, connected with one ends of the multiple first wires and one ends of the multiple second wires and emits a first carrier signal; the signal analyzing unit is connected with the other ends of the multiple first wires and the other ends of the multiple second wires and receives a carrier signal, and the signal analyzing unit is configured to compare the received carrier signal with the first carrier signal to determine whether touching exists or not.

Description

technical field [0001] The invention relates to a touch screen and a touch sensing method, in particular to a touch screen with short touch response time, low power consumption and suitable for large size and a touch sensing method. Background technique [0002] Currently, with the popularization of electronic devices such as smart phones and tablet computers, touch screen and touch display technologies have also made great progress. According to the working principle and transmission medium of the touch screen, it can usually be divided into capacitive, resistive, infrared and surface acoustic wave, among which the capacitive touch screen occupies the mainstream position in the current market. However, there are some defects in capacitive touch screens. For example, capacitive touch screens usually use the principle of coupling capacitance formed between conductive electrodes and the human body to determine the touch position. Or the influence of the resistance value of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
Inventor 张振华
Owner LENOVO (BEIJING) LTD
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