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Touch screen, touch sensing device and driving method

A technology of touch screen and touch sensing, which is applied in the fields of instruments, computing, electrical digital data processing, etc., to achieve the effect of small screen size

Active Publication Date: 2019-03-05
HIMAX TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional in-cell touch screen needs to use a separate architecture or mechanism to drive the display part and the touch part separately

Method used

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  • Touch screen, touch sensing device and driving method
  • Touch screen, touch sensing device and driving method
  • Touch screen, touch sensing device and driving method

Examples

Experimental program
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Embodiment Construction

[0068] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose, the following is a specific implementation of the touch screen, touch sensing device and driving method according to the present invention in conjunction with the accompanying drawings and preferred embodiments Mode, structure, feature and effect thereof are as follows in detail.

[0069] Figure 1A to Figure 1C is a cross-sectional view of the touch screen 100 according to the first embodiment of the present invention. The touch screen 100 of this embodiment is a liquid crystal display (LCD) embedded with a touch sensing device. In this embodiment, the touch screen 100 includes a first conductive layer 11 . When the touch screen 100 is in the display mode, the first conductive layer 11 is used as a common voltage (Vcom) layer of the liquid crystal display; when the touch screen 100 is in the touch mode, the first conductive layer 11 is ...

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Abstract

A touch sensing device includes a first conductive layer that acts as a common voltage layer in a display mode; and a second conductive layer electrically isolated from the first conductive layer, the second conductive layer having source lines that transfer data to be displayed in the display mode and act as transmitting (TX) electrode lines in a touch sensing mode. The first conductive layer includes RX electrode lines and blocks that are disposed among and separated by the RX electrode lines. The RX electrode lines and the blocks are electrically connected to a common voltage in the display mode.

Description

technical field [0001] The invention relates to a touch screen, in particular to a liquid crystal display embedded with a touch sensing device. Background technique [0002] A touch screen is an input / output device formed by combining touch technology and display technology to allow users to interact with displayed objects. The capacitive touch panel is a commonly used touch panel, which utilizes the capacitive coupling effect to detect the touch position. When a finger touches the surface of the touch panel, the capacitance at the corresponding position will be changed, so that the touch position can be detected. [0003] To create thinner touch screens, in-cell capacitors are fabricated inside the display, omitting one or more layers. However, the traditional in-cell touch screen needs to use a separate structure or mechanism to drive the display part and the touch part respectively. Therefore, there is an urgent need to propose a novel in-cell touch screen architecture...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044G06F3/041
CPCG06F3/0412G06F3/0443G06F3/0446G06F2203/04111G06F2203/04112G09G3/3406G09G3/3648
Inventor 胡家玮张耀光戴绅峰胡维宾
Owner HIMAX TECH LTD
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