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Electronic equipment

A technology of electronic equipment and detection electrodes, which is applied in the direction of electrical digital data processing, secondary processing of printed circuits, instruments, etc., can solve the problems of trapped air bubbles, reduced visual recognition, and deviation of electrostatic capacitance value, etc., and achieves less detection errors and low static electricity The effect of stable capacitance value and less variation in electrostatic capacitance value

Inactive Publication Date: 2010-06-23
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Therefore, if a protective sheet is placed on the sensor electrodes, many indeterminate air bubbles will remain in the height difference portion, and as a result, there will be a problem that the capacitance value will vary greatly.
[0009] In addition, in the configuration in which the protective sheet also serves as the display portion of the liquid crystal display device formed in the transparent panel, many bubbles in an indeterminate shape appear around the display portion, resulting in a problem that the visibility decreases when viewed from the outside.

Method used

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Embodiment Construction

[0030] Figure 1A It is a cross-sectional view showing an electronic device equipped with a coordinate input device according to an embodiment of the present invention, Figure 1B is enlarged Figure 1A A cross-sectional view of the part surrounded by ○, figure 2 is a top view showing the protective plate, image 3 is a plan view showing the upper panel constituting the coordinate input device, Figure 4 It is a plan view showing the lower panel constituting the coordinate input device.

[0031] The electronic device 10 described below functions as a tablet (tablet) capable of inputting characters, graphics, etc., for example, to an internal coordinate input device. Alternatively, it functions as an electronic device having a switch function for receiving an input operation to the coordinate input device while viewing an image displayed on the display device installed on the lower stage. This type of electronic device 10 can be mounted on portable terminals such as mobile ...

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Abstract

Provided is electronic equipment with good vision confirmation which is difficult to see the bubbles formed inside from the outside. Grooves (39, 49) are formed between the upper insulating layer (37) and the upper protective layer (38) of an upper panel (30) and the lower insulating layer (47) and the lower protective layer (48) of a lower panel (40). If the upper panel (30) and the lower panel (40) are bonded, the bubbles (1) are closed in the grooves (39, 49), due to the grooves (39, 49) used as the non-permeating part (23) in the non-vision confirmation area, hence to see the bubbles is difficult. Thereby the electronic equipment with good vision confirmation is realized.

Description

technical field [0001] The present invention relates to electronic equipment capable of input operations, and more particularly to electronic equipment used with a display device. Background technique [0002] Conventionally, such electronic devices include, for example, a coordinate input device disclosed in Patent Document 1 below. [0003] In this coordinate input device, a resist layer having the same thickness as the X electrodes is filled without gaps in recesses formed between adjacent X electrodes (similar to the Y electrodes) on the substrate. Thus, the surface of the substrate having the electrodes is formed as a substantially flat surface with almost no unevenness, and the protective sheet is placed on the substantially flat surface and pressure-bonded to prevent air bubbles from forming between the substrate and the protective sheet. [0004] Patent Document 1: Japanese Unexamined Patent Publication No. 9-305289 [0005] In Patent Document 1, in order to preven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041H05K3/28
Inventor 大场克一桥田淳二
Owner ALPS ALPINE CO LTD
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