Capacitance-type embedded touch screen, driving method thereof and display device

A touch screen, capacitive technology, applied in the direction of static indicators, electrical digital data processing, optics, etc., to achieve the effect of large aperture ratio and guaranteed accuracy

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A touch screen, capacitive technology, applied in the direction of static indicators, electrical digital data processing, optics, etc., to achieve the effect of large aperture ratio and guaranteed accuracy

CN102937852AActive Publication Date: 2013-02-20BEIJING BOE OPTOELECTRONCIS TECH CO LTD

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[0024] At present, liquid crystal display technologies capable of realizing wide viewing angles mainly include In-Plane Switch (IPS, In-Plane Switch) technology and Advanced Super Dimension Switch (ADS, Advanced Super Dimension Switch) technology; among them, ADS technology passes through slits in the same plane. The electric field generated by the edge of the electrode and the electric field generated between the slit electrode layer and the plate electrode layer form a multi-dimensional electric field, so that all oriented liquid crystal molecules between the slit electrodes in the liquid crystal cell and directly above the electrodes can be rotated, thereby improving the operation of the liquid crystal. efficiency and increased light transmission efficiency. Advanced ultra-dimensional field conversion technology can improve the picture quality of TFT-LCD products, with high resolution, high transmittance, low power consumption, wide viewing angle, high aperture ratio, low co...

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Abstract

The invention discloses a capacitance-type embedded touch screen, a driving method thereof and a display device. A touch sensing electrode extending along the line direction of pixel units is arranged on a color film substrate; on a TFT (Thin Film Transistor) array substrate, a double grid structure is adopted, i.e., two grid signal lines are arranged between the adjacent pixel units, and every two adjacent rows of pixel units form a group of pixel unit rows and share a data signal line between the two rows of pixel units, thus saving the position of part of data signal lines. Therefore, touch driving electrodes for realizing a touch function can be arranged on the saved positions of the grid signal lines, i.e., the touch driving electrodes are arranged at clearances between adjacent pixel units, so that not only can the precision of required by touch be ensured, but also less aperture area of the pixel units is occupied, and the relatively large aperture ratio of the touch screen can be ensured.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a capacitive embedded touch screen, a driving method thereof and a display device. Background technique [0002] With the rapid development of display technology, touch screen panels (Touch Screen Panels) have gradually spread throughout people's lives. At present, touch screens can be divided into three types according to their structure: Add on Mode Touch Panel, On Cell Touch Panel, and In Cell Touch Panel. Among them, the plug-in touch screen is produced separately from the touch screen and Liquid Crystal Display (LCD), and then bonded together to form a touch-enabled LCD screen. The plug-in touch screen has high production costs and low light transmittance. Low, thick modules and other shortcomings. The embedded touch screen embeds the touch electrodes of the touch screen inside the liquid crystal display, which can reduce the overall thickness of the module and greatly re...

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Application Information

Patent Timeline

20 Feb 2013

Publication

CN102937852A

IPC: G06F3/044

CPC: G06F3/0412; G02F1/13338; G06F3/0443; G06F3/0446; G06F3/041; G09G3/36

Inventors: 杨盛际; 董学