Capacitive embedded touch screen and display device

A touch screen, capacitive technology, used in electrical digital data processing, optics, instruments, etc., can solve the problem of low touch sensing accuracy, improve touch accuracy, increase the ratio of mutual capacitance changes, and increase projection. The effect of capacitors

Active Publication Date: 2013-07-24
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a capacitive embedded touch screen and a display device to solve the problem of low accuracy of touch sensing in existing embedded touch screens

Method used

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  • Capacitive embedded touch screen and display device
  • Capacitive embedded touch screen and display device
  • Capacitive embedded touch screen and display device

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Embodiment Construction

[0020] 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 capacitive embedded touch screen and a display device. A common electrode layer which is connected on the whole surface in an array substrate is divided onto a touch drive electrode and a common electrode, which are insulated with each other and crossed; a touch induction electrode is arranged on an upper substrate for driving the touch drive electrode in a time-sharing manner, so that the touch function and the display function are realized. The projection, on the array substrate, of the touch induction electrode is arranged in an area at which the common electrode is positioned, so that the opposite surface between the touch induction electrode and the touch drive electrode can be reduced, and therefore, opposite capacitance is reduced; the side of the touch drive electrode and the side of the opposite common electrode are set to be folding lines; and the shape of each touch control induction electrode and the shape of the common electrode are set to be consistent, so that the opposite surface of the touch drive electrode and the touch induction electrode can be increased, and projected capacitance in a unit area is increased. By increasing the proportion of the projected capacitance to the opposite capacitance, the proportion of mutual capacitance variation caused by finger touch can be increased, so that the touch accuracy is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a capacitive embedded touch screen 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 reduce the production cost o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044G02F1/1333
CPCG02F1/13338G06F3/0412G06F3/04166G06F3/0443G06F3/0446
Inventor 刘红娟董学王海生杨盛际王磊王春雷刘英明任涛赵卫杰丁小梁
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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