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Position input device, and display device with position input function

A technology of an input device and a display device, which is applied in the field of a position input device and a display device with a position input function, can solve the problems of complicated detection circuits and the like

Inactive Publication Date: 2017-05-17
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, according to Patent Document 3, although the detection path layer required in Patent Document 1 is not required, it can be expected that the decrease in detection sensitivity that is a problem of Patent Document 2 can be improved to some extent, but the detection circuit is greatly complicated. this new question

Method used

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  • Position input device, and display device with position input function
  • Position input device, and display device with position input function
  • Position input device, and display device with position input function

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Experimental program
Comparison scheme
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Embodiment approach 1

[0082] use Figure 1 to Figure 16 Embodiment 1 of the present invention will be described. In this embodiment, a liquid crystal display device (display device with a position input function) 10 including a touch panel (position input device) 12 is exemplified. In addition, X-axis, Y-axis, and Z-axis are shown in some drawings, and each axis direction is drawn so that it may become the direction shown in each drawing.

[0083] First, the configuration of the liquid crystal display device 10 will be described. Such as figure 1 As shown, the liquid crystal display device 10 is provided with: a liquid crystal panel (display panel) 11, which displays an image; a touch panel 12, which is disposed on the outside (front side) of the liquid crystal panel 11 and faces it; and a backlight device (illumination panel). device) 13, which is an external light source that irradiates light to the liquid crystal panel 11 and the touch panel 12. Among them, the liquid crystal panel 11 and t...

Embodiment approach 2

[0126] according to Figure 17 to Figure 22 Embodiment 2 of the present invention will be described. In this Embodiment 2, the structure which made the touch panel pattern 112P integral with the liquid crystal panel 111 is shown. In addition, redundant descriptions of the same configurations, actions, and effects as those of the first embodiment described above are omitted.

[0127] The touch panel pattern 112P of this embodiment is built in the liquid crystal panel (display panel) 111, that is, is embedded. Specifically, as Figure 17 As shown, the first touch electrode (position input electrode) 127 and the second touch electrode (position input electrode) 128 constituting the touch panel pattern 112P include a transparent electrode film constituting the common electrode (display electrode) 123 provided on the CF substrate 111a. Although the common electrode 123 has a full-surface shape in Embodiment 1, in this embodiment, it is patterned by photolithography to form a plu...

Embodiment approach 3

[0157] according to Figure 23 to Figure 27 Embodiment 3 of the present invention will be described. In this Embodiment 3, the structure which changed the group to which the 1st touch electrode 227 and the 2nd touch electrode 228 belonged from the said Embodiment 1 is shown. In addition, redundant descriptions of the same configurations, actions, and effects as those of the first embodiment described above are omitted.

[0158] Such as Figure 23 and Figure 24 As shown, the numbers of the first touch electrode set and the second touch electrode set to which the first touch electrode 227 and the second touch electrode 228 belong in this embodiment are three respectively. That is, the number of first touch electrode sets is larger than the cube root (about 2.51) of the number (16) of first touch electrodes 227 included in the first touch electrode column 231, and the number of second touch electrode sets is larger than the second touch electrode set. The cube root (about 2....

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PUM

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Abstract

A touch panel 12 is provided with: a first touch electrode column 31 comprising a plurality of first touch electrodes 27 aligned side-by-side in a first direction; a plurality of first touch electrode groups 33 to each of which a plurality of the first touch electrodes 27 contained in the first touch electrode column 31 belong; a plurality of first wiring lines 29 connected to each of the plurality of first touch electrodes 27 belonging to each of the plurality of first touch electrode groups 33; a second touch electrode column 32 comprising a plurality of second touch electrodes 28 aligned side-by-side in a second direction; a plurality of second touch electrode groups 34 to each of which a plurality of the second touch electrodes 28 contained in the second touch electrode column 32 belong; and a plurality of second wiring lines 30 connected to each of the plurality of second touch electrodes 28 belonging to each of the plurality of second touch electrode groups 34.

Description

technical field [0001] The invention relates to a position input device and a display device with position input function. Background technique [0002] In recent years, electronic devices such as tablet notebook computers and portable information terminals have been increasingly equipped with touch panels for the purpose of improving operability and usability. By touching the touch panel with, for example, a finger or a stylus, in-plane positional information on the display surface of the liquid crystal panel can be input. This enables the user to perform an intuitive operation such as directly touching an image displayed on the liquid crystal panel. As an example of such a touch panel, touch panels described in the following patent documents 1 and 2 are known. [0003] Patent Document 1 describes a self-capacitance method that can determine the real coordinates of multiple touch points by including a detection path layer having a plurality of first paths and a plurality ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G02F1/1333G06F3/044
CPCG06F3/0412G06F3/04166G06F3/0443G06F3/0446G06F2203/04103G06F2203/04112G02F1/133345G02F1/13338G02F1/133512G02F1/133514G02F1/134309G02F1/13439G02F1/136286G02F2201/121G02F2201/123G06F3/0416G06F3/044
Inventor 下敷领文一
Owner SHARP KK