Personal digital assistant

A technology of digital assistant and touch screen, which is applied in the direction of electrical digital data processing, digital data processing parts, data processing input/output process, etc. It can solve the problems of uneven resistance distribution, poor linearity and accuracy, and low sensitivity. Achieve the effect of improving resolution and accuracy, good toughness and mechanical strength, and excellent mechanical properties

Active Publication Date: 2010-02-24
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the preparation process of the ITO layer, a higher vacuum environment and heating to 200-300°C are required, so the preparation cost of the ITO layer is higher
In addition, as a transparent conductive layer, the ITO layer in the prior art has disadvantages such as insufficient mechanical properties, difficulty in bending, and uneven resistance distribution.
In addition, the transparency of ITO will gradually decrease in humid air
Thereby cause existing touch screen and the PDA that uses this touch screen to have the shortcomings such as durability is not good enough, sensitivity is low, linearity and accuracy are relatively poor

Method used

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Examples

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Embodiment Construction

[0017] The personal digital assistant provided by the embodiment of the technical solution will be described in detail below with reference to the accompanying drawings.

[0018] see figure 1 , the first embodiment of the technical solution provides a personal digital assistant 100 , which includes: a body 102 and a touch screen 10 . The main body 102 is provided with a display screen 104 . The touch screen 10 is disposed on the surface of the display screen 104 .

[0019] The main body 102 further includes a casing, a CPU, a storage unit and a control unit. The central processing unit, storage unit, control unit and display screen 104 are all arranged inside the casing. The central processing unit, storage unit and control unit can be integrated on an integrated circuit board. See figure 2 , the storage unit 170 and the control unit 150 are respectively electrically connected to the central processing unit 160 through wires on the integrated circuit board. The display ...

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Abstract

The invention relates to a personal digital assistant, which comprises a body, wherein the body is provided with a display screen and a touch screen. The touch screen is arranged on the surface of thedisplay screen and comprises at least one transparent conducting layer which is a carbon nano tube layer.

Description

technical field [0001] The invention relates to a personal digital assistant, in particular to a touch-type personal digital assistant based on carbon nanotubes. Background technique [0002] Usually, a personal digital assistant (Personal Digital Assistant, PDA), as a portable electronic device, combines the functions of collecting, storing, processing and exchanging information. Existing PDAs are generally touch-type PDAs, and have different compositions according to their specific applications. Generally, the PDA includes a body, a display screen arranged on the surface of the body, and an input device, such as a touch screen, arranged on the surface of the body. [0003] As the main input device of PDA, touch screens in the prior art are generally divided into four types according to their working principles and transmission media, namely resistive type, capacitive sensing type, infrared type and surface acoustic wave type. Among them, resistive touch screens and capac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/16G06F3/041G06F3/044G06F3/045C03C17/22
CPCG06F3/045G06F1/1643G06F2203/04107G06F3/0416G06F1/1626
Inventor 姜开利刘亮范守善
Owner TSINGHUA UNIV
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