Display device having touch panel

• US 20090201267A1
• Filed: 02/11/2009
• Published: 08/13/2009
• Est. Priority Date: 02/13/2008
• Status: Active Grant

• Current Assignee: Paneltouch Technologies LLC (Touch Display LLC)
• Original Assignee: Hitachi Displays Limited (Japan Display Incorporated)
• Inventors: Kageyama, Hiroshi, Akimoto, Hajime, Kasai, Naruhiko, Matsudate, Noriharu, Yatsu, Yasuharu
• Granted Patent: US 8,416,202 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

The present invention realizes the reduction of cost of a display device having a touch panel. The display device having a touch panel includes a display panel, and a touch panel which is arranged on the display panel in an overlapping manner in plane. The touch panel includes a first substrate and a second substrate which are arranged to face each other with spacers sandwiched therebetween, and a first semiconductor chip which is mounted on the first substrate. The first substrate includes, on a surface side thereof which faces the second substrate, a plurality of first lines which is arranged parallel to each other in the first direction, a first chip mounting region on which the first semiconductor chip is mounted, and a plurality of first connection portions each of which is constituted of a portion of each line in the plurality of first lines, the first semiconductor chip includes a plurality of first bump electrodes which is arranged in one direction, the plurality of first connection portions are arranged in the arrangement direction of the plurality of first bump electrodes within the first-chip mounting region, and an arrangement pitch of the plurality of first bump electrodes is set larger than an arrangement pitch of the plurality of first connection portions.

Claims

1. A display device having a touch panel comprising:

a display panel; and

a touch panel which is arranged on the display panel in an overlapping manner in plane, wherein

the touch panel includes a first substrate and a second substrate which are arranged to face each other with spacers sandwiched therebetween, and a first semiconductor chip which is mounted on the first substrate,

the first substrate includes, on a surface side thereof which faces the second substrate, a plurality of first lines which is arranged parallel to each other in the first direction, a first-chip mounting region on which the first semiconductor chip is mounted, and a plurality of first connection portions each of which is constituted of a portion of each line in the plurality of first lines,

the first semiconductor chip includes a plurality of first bump electrodes which is arranged in one direction,

the plurality of first connection portions are arranged in the arrangement direction of the plurality of first bump electrodes within the first-chip mounting region, and

an arrangement pitch of the plurality of first bump electrodes is set larger than an arrangement pitch of the plurality of first connection portions.

3. A display device having a touch panel according to claim 1, wherein the plurality of first connection portions includes a connection portion which is not connected with the first bump electrode.

4. A display device having a touch panel according to claim 1, wherein the plurality of first bump electrodes includes bump electrodes which are connected with n (n≧

2) or more pieces of first connection portions.

5. A display device having a touch panel according to claim 1, wherein a width of each line in the plurality of first connection portions is set smaller than a distance between two neighboring first bump electrodes.

6. A display device having a touch panel according to claim 1, wherein the touch panel includes a second semiconductor chip which is mounted on the second substrate,

the second substrate includes, on a surface side thereof which faces the first substrate, a plurality of second lines which is arranged parallel to each other in the second direction which intersects with the first direction, a second chip mounting region on which the second semiconductor chip is mounted, and a plurality of second connection portions each of which is constituted of a portion of each line in the plurality of second lines,

the second semiconductor chip includes a plurality of second bump electrodes which is arranged in one direction,

the plurality of second connection portions is arranged in the arrangement direction of the plurality of second bump electrodes within a second-chip mounting region, and

an arrangement pitch of the plurality of second bump electrodes is set larger than an arrangement pitch of the plurality of second connection portions.

7. A display device having a touch panel according to claim 1, wherein the touch panel includes a second semiconductor chip which is mounted on the second substrate,

the second substrate includes, on a surface side thereof which faces the first substrate, a plurality of second lines which is arranged parallel to each other in the second direction which intersects with the first direction, a second chip mounting region on which the second semiconductor chip is mounted, and a plurality of second connection portions each of which is constituted of a portion of each line in the plurality of second lines,

the second semiconductor chip includes a plurality of second bump electrodes which is arranged in one direction,

the plurality of second connection portions is arranged in the arrangement direction of the plurality of second bump electrodes within a second-chip mounting region, and

the number of the plurality of second bump electrodes is set smaller than the number of the plurality of second connection portions.

8. A display device having a touch panel according to claim 6, wherein the plurality of second connection portions includes a connection portion which is not connected with the second bump electrode.

9. A display device having a touch panel according to claim 6, wherein the plurality of second bump electrodes include bump electrodes which are connected with n (n≧

2) or more pieces of second connection portions.

10. A display device having a touch panel according to claim 6, wherein a width of each line in the plurality of second connection portions is set smaller than a distance between two neighboring second bump electrodes.

2. A display device having a touch panel comprising:

a display panel; and

a touch panel which is arranged on the display panel in an overlapping manner in plane, wherein

the touch panel includes a first substrate and a second substrate which are arranged to face each other with spacers sandwiched therebetween, and a first semiconductor chip which is mounted on the first substrate,

the first substrate includes, on a surface side thereof which faces the second substrate, a plurality of first lines which is arranged parallel to each other in the first direction, a first chip mounting region on which the first semiconductor chip is mounted, and a plurality of first connection portions each of which is constituted of a portion of each line in the plurality of first lines,

the first semiconductor chip includes a plurality of first bump electrodes which is arranged in one direction,

the plurality of first connection portions is arranged in the arrangement direction of the plurality of first bump electrodes within the first-chip mounting region, and

the number of the plurality of first bump electrodes is set smaller than the number of the plurality of first connection portions.