Touch screen and touch sensing method
A technology of touch screen and touch position, which is applied in the direction of instruments, computing, and electrical digital data processing, etc., which 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 realize user identification and encryption function, overcome the long charge and discharge time, and achieve the effect of large size
Active Publication Date: 2019-02-05
LENOVO (BEIJING) LTD
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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
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[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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The invention discloses a touch screen, which includes: a protective panel configured to protect components below the protective panel; a substrate having a plurality of first conductors and a plurality of second conductors, wherein the plurality of first conductors The conductors are arranged at predetermined intervals along a first direction, and the plurality of second conductors are arranged at predetermined intervals along a second direction, wherein the first direction is different from the second direction; a signal transmitting unit configured as a first a signal source, connected to one end of the plurality of first conductors and one end of the plurality of second conductors and transmitting a first carrier signal; and a signal analysis unit, connected to the other end of the plurality of first conductors and the other ends of the plurality of second conductors. The other ends of the plurality of second wires are connected to and receive carrier signals, and are configured to respectively compare the received carrier signals with the first carrier signals to determine whether there is a touch.
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...
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IPC IPC(8): G06F3/041G06F3/044
Inventor 张振华
Owner LENOVO (BEIJING) LTD