POSITION INPUTTING DEVICE AND DISPLAY DEVICE WITH POSITION INPUTTING FUNCTION

• US 20170255299A1
• Filed: 03/09/2015
• Published: 09/07/2017
• Est. Priority Date: 09/10/2014
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: SHIMOSHIKIRYOH, FUMIKAZU
• Granted Patent: US 10,209,841 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 2201/121 common or background
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A touchscreen 12 includes first touch electrode lines 31, first touch electrode groups 33, first traces 29, second touch electrode lines 32, second touch electrode groups 34, and second traces 30. The first touch electrode lines 31 include first touch electrodes 27 arranged along a first direction. Each first touch electrode group 33 includes multiple first touch electrodes 27. Each first trace 29 is connected to multiple first touch electrodes 27 in each first touch electrode group 33. The second touch electrode lines 32 include second touch electrodes 28 arranged along a second direction. Each second touch electrode group 34 includes multiple second touch electrodes 28. Each second trace 30 is connected to multiple second touch electrodes 28 in each second electrode touch group 34.

Claims

1. A position inputting device comprising:

a plurality of first electrodes;

a plurality of first electrode lines comprising the plurality of first electrodes arranged along a first direction, the first electrode lines being arranged along a second direction perpendicular to the first direction;

a plurality of first electrode groups each including a plurality of the first electrodes included in the first electrode lines;

a plurality of first traces for connecting the first electrodes belonging to the first electrode groups per first electrode line, each of the first traces being connected to the plurality of the first electrodes belonging to the corresponding first electrode group to apply an electrical potential to the plurality of the first electrodes per first electrode group;

a plurality of second electrodes;

a plurality of second electrode lines including the plurality of second electrodes arranged along the second direction, the plurality of second electrode lines being arranged along the first direction;

a plurality of second electrode groups each including a plurality of the second electrodes included in the second electrode lines; and

a plurality of second traces for connecting the second electrodes belonging to the second electrode groups per second electrode line, each of the second traces being connected to the plurality of the second electrodes belonging to the corresponding second electrode group to apply an electrical potential to the plurality of the second electrodes per second electrode group.

2. The position inputting device according to claim 1, wherein

a number of the first traces electrically independent from one another for connecting the first electrodes included in a signal first electrode line is equal to a number of the first electrode groups, and

a number of the second traces electrically independent from one another for connecting the second electrodes included in a signal second electrode line is equal to a number of the second electrode groups.

3. The position inputting device according to claim 1, wherein

each of the first electrode lines is configured such that the first electrodes adjacent to one another with respect to the first direction belong to the first electrode groups that are different from one another, and

each of the second electrode lines is configured such that the second electrodes adjacent to one another with respect to the second direction belong to the second electrode groups that are different from one another.

4. The position inputting device according to claim 1, wherein

the plurality of the first electrode lines are configured that combinations of the first electrode groups to which the first electrodes adjacent to one another with respect to the second direction belong are different from one another within a range of at least 20 cm with respect to the first direction, and

the plurality of the second electrode lines are configured that combinations of the second electrode groups to which the second electrodes adjacent to one another with respect to the first direction belong are different from one another within a range of at least 20 cm with respect to the second direction.

5. The position inputting device according to claim 1, wherein

the plurality of the first electrode lines are configured that combinations of the first electrode groups to which the first electrodes adjacent to one another with respect to the second direction belong are all different from one another, and

the plurality of the second electrode lines are configured that combinations of the second electrode groups to which the second electrodes adjacent to one another with respect to the first direction belong are all different from one another.

6. The position inputting device according to claim 1, wherein

the plurality of the first electrode lines are configured that combinations of the first electrode groups are different from one another within a range of at least 20 cm with respect to the first direction, each of the combinations including at least three first electrodes adjacent to one another with respect to the second direction,

the plurality of the second electrode lines are configured that combinations of the second electrode groups are different from one another within a range of at least 20 cm with respect to the second direction, each of the combinations including at least three second electrodes adjacent to one another with respect to the first direction.

7. The position inputting device according to claim 1, wherein

the plurality of the first electrode lines are configured that combinations of the first electrode groups are all different from one another, each of the combinations including at least three first electrodes adjacent to one another with respect to the second direction, and

the plurality of the second electrode lines are configured that combinations of the second electrode groups are all different from one another, each of the combination including at least three second electrodes adjacent to one another with respect to the first direction belong.

10. A display device with a position inputting function comprising at least:

the position inputting device according to claim 1; and

a display panel including the position inputting device.

11. The display device with the position inputting function according to claim 10, wherein the display panel comprising:

a display electrode;

the first electrodes and the second electrodes or the electrodes formed from a transparent electrode film;

the first traces and the second traces or the traces formed from a metal film; and

an insulating film disposed between the first electrodes and the second electrodes or the electrodes and the first traces and the second traces or the traces, the insulating film including contact holes formed at positions overlapping the first electrodes and the second electrodes or the electrodes and the first traces and the second traces or the traces.

8. A position inputting device comprising:

a plurality of electrodes;

a plurality of electrode lines including the plurality of electrodes arranged along a first direction, the electrode lines being arranged along a second direction perpendicular to the first direction;

a plurality of electrode groups each including a plurality of the electrodes included in the electrode lines; and

a plurality of traces for connecting the electrodes belonging to the electrode groups per electrode line, each of the traces being connected to the plurality of the electrodes belonging to the corresponding electrode group to apply an electrical potential to the plurality of the electrodes per electrode group.

9. The position inputting device according to claim 8, wherein a number of the traces electrically independent from one another for connecting the electrodes included in a signal electrode line is equal to a number of the electrode groups.

12. A display device with the position inputting function comprising:

a display electrode;

a position inputting electrode formed from a transparent electrode film for detecting an input position;

traces formed from a metal film and connected to the position inputting electrode for applying an electrical potential to the position inputting electrode, the traces including a first trace extending along a first direction and a second trace extending along a second direction perpendicular to the first direction; and

an insulating film disposed between the position inputting electrode and the traces, the insulating film including a contact hole formed at a position overlapping at least the position inputting electrode or the first trace and the second trace.

13. The display device with the position inputting function according to claim 12, wherein

the position inputting electrode comprises a first position inputting electrode connected to the first trace and a second position inputting electrode connected to the second trace, and

the contact hole comprises a first contact hole formed at a position overlapping the first position inputting electrode and the first trace and a second contact hole formed at a position overlapping the second position inputting electrode and the second trace.

14. The display device with the position inputting function according to claim 12, wherein

the second trace comprises a plurality of segment second traces sandwiching the first trace with respect to the second direction,

the position inputting electrode includes a trace-crossing portion crossing the first trace with respect to the second direction, a portion of the trace-crossing portion being arranged to overlap the plurality of segment second traces sandwiching the first trace, and

the insulating film includes the contact hole formed at a position overlapping the plurality of segment second traces and the trace-crossing portion.

15. The display device with the position inputting function according to claim 12, wherein

the display electrode comprises a plurality of pixel electrodes and a common electrode formed from a transparent electrode film and provided with respect to the plurality of pixel electrodes, and

the position inputting electrode is formed from the transparent electrode film that forms the common electrode.

16. The display device with the position inputting function according to claim 15, wherein

the position inputting electrode comprises a plurality of segment position inputting electrodes and a link for connecting portions of the plurality of segment position inputting electrodes, and

the traces are arranged to pass through between the adjacent segment position inputting electrodes.

17. The display device with the position inputting function according to claim 16, further comprising a light blocking portion is provided between the plurality of pixel electrodes, wherein

a separating point of the plurality of segment position inputting electrodes of the position inputting electrode is located between the adjacent pixel electrodes, and

the traces are arranged to overlap the light blocking portion.

18. The display device with the position inputting function according to claim 16, wherein

a separating point of the plurality of segment position inputting electrodes of the position inputting electrode is located between the adjacent pixel electrodes, and

the insulating film is disposed such that the contact hole overlaps the link.

19. The display device with the position inputting function according to claim 17, further comprising a color filter comprising a plurality of color portions arranged to overlap the pixel electrodes and exhibiting different colors, wherein

the insulating film is disposed such that the contact hole is between the adjacent color portions exhibiting a specific color.

20. The display device with the position inputting function according to claim 17, further comprising a color filter comprising a plurality of color portions arranged to overlap the pixel electrode and exhibiting at least blue, green, and red, respectively, wherein

the insulating film is disposed such that the contact hole is between the adjacent color portions exhibiting blue and red, respectively.

21. The display device with the position inputting function according to claim 16, wherein the traces are formed in a mesh pattern to pass through between the adjacent segment position inputting electrodes.

22. The display device with the position inputting function according to claim 16, further comprising:

a color filter comprising a plurality of color portions arranged to overlap the pixel electrode and exhibiting colors different from one another,

a plurality of unit pixels comprising the pixel electrode and the color portions; and

a display pixel comprising the unit pixels adjacent to one another and exhibiting colors different from one another, wherein

the segment position inputting electrodes have a size to cover the plurality of pixel electrodes included in the plurality of display unit pixels of the display pixel.

23. The display device with the position inputting function according to claim 12, wherein

the display electrode comprises a plurality of pixel electrodes and a common electrode formed from a transparent electrode film and provided with respect to the plurality of pixel electrodes, and

the position inputting electrode is formed from the transparent electrode film that forms the common electrode and includes a plurality of position inputting electrodes formed by dividing the transparent electrode film into segments at positions between the adjacent pixel electrodes.