JP5517718B2 - Electrode substrate, touch panel device and display device - Google Patents

Description

  The present invention relates to an electrode substrate on which a driving IC chip is directly mounted, a touch panel device including the electrode substrate, and a display device including the electrode substrate.

  Conventionally, a COG (Chip on Glass) type display device having an electrode substrate on which a display driving IC chip is directly mounted has been used.

  A conventional COG-type liquid crystal display device has a pair of electrode substrates disposed so as to face each other, and one of the electrode substrates is a display driving unit formed to face the other electrode substrate, And a terminal portion formed so as to protrude from the other electrode substrate in a planar shape. A plurality of transparent electrodes for driving used for display driving made of, for example, ITO (Indium Tin Oxide) is provided in the display driving units facing each other on both electrode substrates. Is extended to the terminal portion to be an electrode terminal portion. In addition, the terminal portion is provided with a plurality of terminal electrodes that are arranged independently from each driving transparent electrode and are connected to electrodes of an external wiring such as a flexible wiring board. Furthermore, a driving IC chip is mounted on the terminal portion by conductive connection to each electrode terminal portion and each terminal electrode, and this display driving IC chip is conductively connected to the flexible wiring board via each terminal electrode. Has been. A control signal for controlling the display drive IC chip is output from a drive circuit (not shown) to the display drive IC chip via the flexible wiring board.

  In such a liquid crystal display device, a power supply line between the drive circuit and the display drive IC chip is used for the purpose of reducing radiation noise generated by excessive voltage fluctuation caused by a control signal or the like output from the drive circuit. A bypass capacitor is inserted into the chip, and a chip-type bypass capacitor is conventionally mounted on a flexible wiring board (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-271721

  However, in the case of a display device in which a chip-type bypass capacitor is mounted on a flexible wiring board as described above, there is a problem that mounting work of the bypass capacitor takes time and the manufacturing cost of the display device also increases. It was.

  In order to reliably reduce excessive voltage fluctuation, it is preferable to provide a bypass capacitor as close to the display driving IC chip as possible. However, since the terminal portion of the electrode substrate is provided with the electrode terminals of the transparent electrodes for driving and the terminal electrodes, and the terminal portion itself is formed small due to the demand for downsizing of the display device, etc. It is difficult to secure a space for mounting a chip-type bypass capacitor. In addition, when mounting a chip-type bypass capacitor on the terminal portion, as in the case of mounting on a flexible wiring board, there is a problem that the mounting work takes time and the manufacturing cost of the display device increases. .

  The present invention has been made in view of these points, and it is possible to stabilize the operation of the driving IC chip by reliably reducing excessive voltage fluctuations and suppressing generation of radiation noise. An object of the present invention is to provide an electrode substrate, a touch panel device, and a display device, which can facilitate the manufacturing process and reduce the manufacturing cost.

In order to achieve the above object, the electrode substrate according to the present invention is characterized in that it has a drive unit and a terminal unit for performing sensor drive or display drive, and the drive unit is provided with a plurality of drive electrodes, and the terminal unit In addition, each of the driving electrodes is extended to be an electrode terminal portion, and a plurality of terminal electrodes connected to an external wiring are provided independently from each of the driving electrodes, and each of the electrode terminal portions and the In the electrode substrate on which the driving IC chip that is conductively connected to each terminal electrode is mounted, in the vicinity of the mounting position of the driving IC chip in the terminal portion, and between the driving IC chip and the external wiring wherein the terminal electrode, dielectric and conductor is provided with bypass capacitors are sequentially stacked, the bypass capacitor, one terminal electrode of the next-ordinating the terminal electrode in the The first convex part which is divided so as to be arranged in parallel in the length direction and the other terminal electrode of the adjacent terminal electrodes protrudes in the direction of the one terminal electrode in the middle part of the length direction. And the first protrusion is disposed while the one terminal electrode is divided, and the conductor connects the one terminal electrode and protrudes toward the other terminal electrode. It has the point which has the 2nd convex part .

  According to the electrode substrate of the present invention, since the bypass capacitor can be provided in the vicinity of the driving IC chip in the power supply line between the driving circuit for driving the electrode substrate and the display driving IC chip, an excessive voltage It is possible to reliably reduce fluctuations and suppress the generation of radiation noise. At the same time, since a bypass capacitor can be provided by sequentially laminating a dielectric and a conductor on each predetermined terminal electrode without using a chip-type bypass capacitor, the manufacturing cost of the electrode substrate can be reduced. Can do.

The touch panel device according to the present invention includes an electrode substrate having a sensor driving unit and a terminal unit, wherein the sensor driving unit is provided with a plurality of driving electrodes, and each of the driving electrodes extends to the terminal unit. A plurality of terminal electrodes that are electrode terminal portions and connected to external wiring are provided independently of the respective driving electrodes, and are electrically conductively connected to the respective electrode terminal portions and the respective terminal electrodes. In the touch panel device on which the IC chip is mounted, a dielectric and a conductive material are provided on the terminal electrode in the vicinity of the mounting position of the driving IC chip in the terminal portion and between the driving IC chip and the external wiring. body is provided with a bypass capacitor formed by sequentially stacking, the bypass capacitor, one terminal electrode of the next-ordinating the terminal electrode, it length And the other terminal electrode of the adjacent terminal electrodes has a first protrusion protruding in the direction of the one terminal electrode in the middle of the length direction, A first convex portion is disposed while the one terminal electrode is divided, and the conductor connects the one divided terminal electrode and projects to the other terminal electrode side. It is in having . Here, the conductor may be a metal or a transparent conductor.

  According to the touch panel device according to the present invention, the bypass capacitor is disposed closer to the driving IC chip in the power supply line between the driving circuit driving the touch panel device and the input display driving IC chip in the terminal portion of the electrode substrate. Since it can be provided, excessive voltage fluctuation can be reliably reduced and generation of radiation noise can be suppressed. At the same time, a bypass capacitor can be easily provided by sequentially laminating a dielectric and a conductor on each predetermined terminal electrode without using a chip-type bypass capacitor, thereby reducing the manufacturing cost of the touch panel device. You can plan.

  In the touch panel device according to the present invention, each of the drive electrodes includes a first drive transparent electrode extending in a first direction and a second drive transparent electrode extending in a second direction intersecting the first direction, Each of the first driving transparent electrodes and each of the second driving transparent electrodes is provided so as to intersect with one surface of the same electrode substrate, and in each of the intersecting regions, one of the first driving electrodes. When the transparent electrode or each of the second driving transparent electrodes is made conductive by a bridge wiring via an insulator provided on the other second driving transparent electrode or each of the first driving transparent electrodes. The drive electrodes and the terminal electrodes, the insulator and the dielectric, the bridge wiring, and the conductor are manufactured in the same process, respectively. It is preferable. Here, the bridge wiring may be a metal or a transparent electrode forming material.

  Thereby, since the touch panel device according to the present invention can simultaneously form the bypass capacitor by the process of manufacturing each driving electrode, each terminal electrode, the insulator, and the bridge wiring, the touch panel device provided with the bypass capacitor Therefore, the manufacturing process of the touch panel device can be further simplified, and accordingly, the manufacturing cost of the touch panel device can be further reduced.

The display device according to the present invention includes a pair of substrates disposed so as to face each other, and one of the pair of substrates includes a display driving unit formed to face the other substrate, and the other A plurality of driving electrodes are provided in the display driving unit, and each driving electrode is provided in the terminal unit. A plurality of terminal electrodes extending to be electrode terminal portions and connected to external wiring are provided independently from the respective driving electrodes, and are conductively connected to the respective electrode terminal portions and the respective terminal electrodes. In the display device on which the driving IC chip is mounted, the terminal electrode is in the vicinity of the mounting position of the driving IC chip in the terminal portion, and the terminal electrode between the driving IC chip and the external wiring, Collector and the conductor has a bypass capacitor is provided are sequentially stacked, the bypass capacitor, divided as one terminal electrodes of adjacent ordinating the terminal electrodes are arranged in parallel in the length direction The other terminal electrode of the adjacent terminal electrodes has a first protrusion protruding in the direction of the one terminal electrode in the middle of the length direction, and the first protrusion is the one of the one The conductor is disposed between the divided terminal electrodes, and the conductor has a second convex portion that connects the divided one terminal electrode and protrudes toward the other terminal electrode. . Here, the conductor may be the same material as the driving electrode, or may be a metal conductor.

  According to the display device of the present invention, since the bypass capacitor can be provided in the vicinity of the display drive IC chip in the power supply line between the drive circuit that drives the display device and the display drive IC chip, It is possible to reliably reduce the voltage fluctuation and suppress the generation of radiation noise. At the same time, without using a chip-type bypass capacitor, a bypass capacitor can be easily provided by sequentially laminating a dielectric and a conductor on each predetermined electrode, thereby reducing the manufacturing cost of the display device. You can plan.

  The display device according to the present invention further includes a plurality of driving electrodes provided on the electrode substrate and a driving electrode on the other side provided on the other substrate and intersecting the plurality of driving electrodes. By using a passive matrix display device, it is possible to easily provide a bypass capacitor in a passive matrix display device without using a chip-type bypass capacitor, thereby reducing the manufacturing cost of the display device. it can.

  As described above, according to the electrode substrate, the touch panel device, and the display device according to the present invention, it is possible to reliably reduce excessive voltage fluctuations, suppress the generation of radiation noise, and stabilize the operation of the driving IC chip. In addition, the manufacturing process can be simplified and the manufacturing cost can be reduced.

1 is a schematic plan view partially showing an embodiment of a touch panel device using an electrode substrate according to the present invention. (A) Schematic plan view showing the process of forming the drive electrode in the touch panel device of FIG. 1, (b) Schematic plan view showing the process of forming the insulator in the touch panel device of FIG. (A) Schematic top view which shows the principal part of the touch panel apparatus of FIG. 1 is a schematic plan view showing an embodiment of a display device using an electrode substrate according to the present invention. FIG. 4 is a schematic side sectional view taken along line BB of the display device of FIG.

  Embodiments of an electrode substrate according to the present invention will be described below with reference to FIGS.

  First, an example of a touch panel device using the electrode substrate according to the first embodiment will be described with reference to FIGS. 1 to 3.

  FIG. 1 is a partially transparent schematic plan view showing a touch panel device using an electrode substrate according to the present embodiment.

  As shown in FIG. 1, the touch panel device 1 according to the present embodiment includes an electrode substrate 2 including a sensor driving unit 2a that performs sensor driving and a terminal unit 2b. The sensor driving unit 2a includes a first driving transparent electrode 5a made of ITO or the like extending in the first direction as a plurality of driving electrodes 5 used for detecting a touch position of the touch panel device 1, and a first direction. A second driving transparent electrode 5b made of, for example, ITO or the like extending in the intersecting second direction is provided on one surface of the transparent substrate 3 by patterning. Each of the first driving transparent electrodes 5a and each of the second driving transparent electrodes 5b is extended to the terminal portion 2b to be electrode terminal portions 5ca and 5cb. The electrode terminal portions 5ca and 5cb may not be made of the same material as the first driving transparent electrode 5a and the second driving transparent electrode 5b. For example, a metal material such as aluminum may be used.

  The first driving transparent electrodes 5 a and the second driving transparent electrodes 5 b are provided so as to intersect on the same electrode substrate 2. In each intersecting region where each first driving transparent electrode 5a and each second driving transparent electrode 5b intersect, either one of each first driving transparent electrode 5a or each second driving transparent electrode 5b is either Each of the second driving transparent electrodes 5b or the first driving transparent electrodes 5a is electrically connected by the bridge wiring 8 via the insulator 7 provided on the other second driving transparent electrode 5b. In the touch panel device 1 shown in FIG. 1, each first driving transparent electrode 5 a is formed by a plurality of divided electrode units 5 aa arranged along the first direction, and each second driving transparent electrode 5 b is a second electrode. It is formed by a plurality of divided electrode units 5ba arranged along the direction. As shown in FIG. 2 (a), the first driving transparent electrodes 5a and the second driving transparent electrodes 5b are arranged in the first direction of the first driving transparent electrodes 5a in the intersecting regions where the first driving transparent electrodes 5b intersect. The electrode units 5aa are connected to each other by a connection portion 5ab. In addition, each electrode unit 5ba of the second driving transparent electrode 5b is electrically connected by the bridge wiring 8 through the insulator 7 provided on the connection portion 5ab of the first driving transparent electrode 5a in each of the crossing regions. ing.

  The touch panel device according to the present invention is not limited to the configuration shown in FIG. For example, the electrode units of the first driving transparent electrode are connected to each other by a connecting portion in a predetermined intersecting region among the intersecting regions where the first driving transparent electrode and the second driving transparent electrode intersect. In the crossing region, the electrode units of the second driving transparent electrode are connected to each other by the connecting portion. Further, each electrode unit of the first driving transparent electrode is electrically connected by a bridge wiring through an insulator provided on a connection portion connecting the electrode units of the second driving transparent electrode in the other region. . Then, each electrode unit of the second driving transparent electrode is electrically connected by a bridge wiring through an insulator provided on a connecting portion connecting each electrode unit of the first driving transparent electrode in the predetermined intersection region. You may make it do.

  In addition, a plurality of terminal electrodes 10 that are conductively connected to the flexible wiring board 9 as the external wiring 9 are provided in the terminal portion 2b independently of the first driving transparent electrodes 5a and the second driving transparent electrodes 5b. Is provided.

  The electrode terminal portions 5ca and 5cb of each first driving transparent electrode 5a and each second driving transparent electrode 5b provided on the terminal portion 2b of the electrode substrate 2 and each terminal electrode 10 are driven by the sensor of the touch panel device 1. Each of the lands 11a of the driving IC chip 11 for detecting the change in capacitance at the touch position in the portion 2a is electrically connected to the terminal portion 2b of the electrode substrate 2 so that the terminal portion 2b of the electrode substrate 2 is driven. An IC chip 11 is mounted. The driving IC chip 11 is conductively connected via a flexible wiring substrate 9 to a driving circuit (not shown) that controls driving of the touch panel device 1.

  Further, as shown in FIGS. 3A and 3B, a predetermined distance is provided between the driving IC chip 11 and the flexible wiring board 9 in the vicinity of the mounting position of the driving IC chip 11 on the terminal portion 2b. Each of the terminal electrodes 10 is provided with a bypass capacitor 17 in which a dielectric 15 and a conductor 16 are sequentially laminated.

  In the present embodiment, among the terminal electrodes 10 connected to the lands 11a, the terminal electrodes 10a connected to the Vdd terminals of the lands 11a are divided so as to be arranged in parallel in the length direction. . The terminal electrode 10b connected to the Vss terminal of each land 11a and adjacent to the terminal electrode 10a is formed with a convex portion 10c protruding in the direction of the terminal electrode 10a in the middle of the length direction, The convex part 10c is arrange | positioned between the terminal electrodes 10a formed by dividing. Further, the divided terminal electrode 10 a is connected to the conductor 16 via the dielectric 15. Here, the protrusion 10c of the terminal electrode 10b connected to Vss and the conductor 16 are formed so as to overlap each other, and the conductor 16 has a protrusion protruding in the direction of the terminal electrode 10b in order to increase the overlapping area. doing. The dielectric 15 and the conductor 16 are sequentially laminated on the terminal electrodes 10a and 10b so as to function as the bypass capacitor 17.

  In the present embodiment, the dielectric 15 is preferably manufactured simultaneously with the same material and the same process as the insulator 7, and the conductor 16 is simultaneously manufactured with the same material and the same process as the bridge wiring 8. Preferably it is manufactured.

  Subsequently, a manufacturing process of the touch panel device 1 according to the present embodiment will be described.

  In the manufacturing process of the touch panel device 1, a transparent electrode film having a predetermined thickness is formed on one surface of the transparent substrate 3 by sputtering ITO or the like, and the transparent electrode film is formed into a predetermined pattern shape by photolithography or the like. As shown in FIG. 2 (a), an electrode forming step of forming each first driving transparent electrode 5a extending in the first direction and each second driving transparent electrode 5b extending in the second direction is performed. Have. In this electrode formation step, each of the first driving transparent electrodes 5a and each of the second driving transparent electrodes 5b is formed on the sensor driving unit 2a in the transparent base material 3, and each of the first driving transparent electrodes 5a and Each second driving transparent electrode 5b is formed with electrode terminal portions 5ca and 5cb extending to the terminal portion 2b, and each terminal electrode 10 is formed on the terminal portion 2b. Here, each of the first driving transparent electrodes 5a is a plurality of divided electrode units 5aa arranged along the first direction, and the first driving transparent electrode that connects these electrode units 5aa in the predetermined intersection region. 5a and the electrode 5ac that connects the predetermined electrode unit 5aa and the electrode terminal 5ca, and each of the second driving transparent electrodes 5b is a plurality of divided electrodes arranged in the Y direction. The unit 5ba and the electrode 5bc that connects the predetermined electrode unit 5ba and the electrode terminal portion 5cb.

  In addition, the manufacturing process of the touch panel device 1 includes an insulator forming process for forming the insulator 7 that insulates the connection portions 5ab and the bridge wires 8 from each other. In this insulator forming step, the drive IC chip 11 is mounted on the terminal portion 2b in the vicinity of the mounting position and between the drive IC chip 11 and the flexible wiring board 9 and corresponds to each predetermined terminal electrode 10. The dielectric 15 disposed at the position to be formed is formed. The insulator 7 and the dielectric 15 are preferably formed simultaneously using a mask pattern or the like formed in a predetermined shape. The insulator 7 and the dielectric 15 are preferably made of a material having high insulation and high transparency, such as acrylic resin. Further, as an improvement in the shape accuracy of the insulator 7 and the dielectric 15, these materials are preferably formed of a photosensitive resin.

  Further, the manufacturing process of the touch panel device 1 includes the bridge wiring 8 that is arranged in an insulating state with each connection portion 5ab and that connects the electrode units 5ba of the second driving transparent electrodes 5b that are not electrically connected by the connection portion 5ab. A bridge wiring forming step to be formed; In this bridge wiring forming step, a conductor 16 is further formed via a dielectric 15 at a position corresponding to each predetermined terminal electrode 10. The bridge wiring 8 and the conductor 16 are preferably formed simultaneously using a mask pattern or the like formed in a predetermined shape. The bridge wiring 8 and the conductor 16 are preferably made of a metal material such as aluminum, molybdenum, or gold. In the case of using a metal material, for example, a multilayer structure such as molybdenum-aluminum-molybdenum can be used. Further, an alloy may be used. For example, niobium may be added to molybdenum, or neodymium may be added to aluminum. Furthermore, a transparent conductor such as ITO may be used.

  Thereby, in the manufacturing process of the touch panel device 1, each driving electrode 5 and each terminal electrode 10, the insulator 7 and the dielectric 15, the bridge wiring 8 and the conductor 16 are respectively formed in the same process and the same material. It is manufactured. For this reason, each first driving transparent electrode 5a, each second driving transparent electrode 5b, and each electrode electrode forming step for forming each terminal electrode 10, a bridge wiring step for forming the bridge wiring 8, and each crossing region in each crossing region The bypass capacitor 17 can be simultaneously formed by the insulator forming step of forming the insulator 7 that insulates the two-drive transparent electrode 5b from the connection portion 5ab of each first drive transparent electrode 5a.

  The order of the manufacturing process of the touch panel device 1 may be an insulator forming process and a bridge wiring forming process after the electrode forming process, and an insulator forming process and an electrode forming process after the bridge wiring forming process. May be performed.

  Next, the operation of this embodiment will be described.

  According to the touch panel device 1 according to the present embodiment, in the vicinity of the mounting position of the driving IC chip 11 on the terminal portion 2b of the electrode substrate 2, between the driving IC chip 11 and the flexible wiring board 9, A bypass capacitor 17 can be provided by sequentially laminating a dielectric 15 and a conductor 16 on each predetermined terminal electrode 10. Thus, the bypass capacitor 17 can be provided in the power supply line between the driving circuit and the driving IC chip 11 in the vicinity of the driving IC chip 11, so that excessive voltage fluctuation can be reliably reduced and radiation noise can be reduced. Generation | occurrence | production can be suppressed and the IC chip 11 for a drive can be driven reliably. At the same time, the bypass capacitor 17 can be easily provided by sequentially laminating the dielectric 15 and the conductor 16 on each predetermined terminal electrode 10 without using the chip-type bypass capacitor 17, so that the electrode substrate 2, As a result, the manufacturing process of the touch panel device 1 using the electrode substrate 2 can be facilitated and the manufacturing cost can be reduced.

  Therefore, according to the touch panel device 1 according to the present embodiment, the operation of the driving IC chip 11 can be stabilized by reliably reducing excessive voltage fluctuations and suppressing the generation of radiation noise. The manufacturing process of the electrode substrate 2 and the touch panel device 1 using the electrode substrate 2 can be facilitated and the manufacturing cost can be reduced. In particular, by connecting the bypass capacitor 17 in the vicinity of the mounting position of the driving IC chip 11 and the power supply line of the driving IC chip 11, radiation noise due to voltage fluctuation can be reliably suppressed.

  Further, if each driving electrode 5 and each terminal electrode 10, the insulator 7 and the dielectric 15, the bridge wiring 8 and the conductor 16 are manufactured by the same process, the bypass capacitor 17 can be formed at the same time. Thus, the manufacturing process of the touch panel device 1 can be facilitated, and accordingly, the manufacturing cost of the touch panel device 1 can be further reduced.

  Next, an example of a display device using the electrode substrate according to the second embodiment of the present invention will be described with reference to FIGS.

  4 is a schematic plan view showing a display device using the electrode substrate 22 according to the present embodiment, and FIG. 5 is a schematic side sectional view of the display device of FIG. In the present embodiment, the liquid crystal display device 21 is used as a display device. However, the display device using the electrode substrate 22 according to the present invention is not limited to the liquid crystal display device 21. For example, an organic EL display device or a plasma display device may be used.

  As shown in FIGS. 4 and 5, the liquid crystal display device 21 according to the present embodiment includes the first electrode substrate 22 as the electrode substrate 22, and the second electrode substrate disposed to face the first electrode substrate 22. 23. The first electrode substrate 22 has a display driving unit 22 a that is an image display unit facing the second electrode substrate 23, and a terminal unit 22 b that is formed larger in a planar shape than the second electrode substrate 23. Yes.

  The liquid crystal display device 21 in the present embodiment is of a passive matrix type, and the first electrode substrate 22 and the second electrode substrate 23 have plate-like transparent base materials 26 and 27 made of a glass material or the like, respectively. On the surface of the transparent substrate 26 of the first electrode substrate 22 which is the display drive unit 22a facing the second electrode substrate 23, the first drive transparent electrode 25a is formed as a plurality of drive electrodes 25a made of, for example, ITO or the like. The first driving transparent electrodes 25a are provided in parallel in one direction, and extend to the terminal portion 22b to serve as electrode terminal portions 25ca. The terminal portion 22b is provided with a plurality of terminal electrodes 30 that are conductively connected to the flexible wiring board 29 as the external wiring 29, independently of the first driving transparent electrodes 25a. The electrode terminal portion 25ca may be made of a material different from the first driving transparent electrode 25a, for example, a metal.

  A plurality of second driving transparent electrodes 25b made of ITO or the like intersect the first driving transparent electrode 25a on the surface of the second electrode substrate 23 facing the first electrode substrate 22 in the transparent base material 27, and The first electrode substrate 22 and the second electrode substrate 23 are integrally formed by a sealing material 28 disposed on the outer peripheral portion of the surface facing each other, and are provided in parallel in a direction orthogonal to the direction. A liquid crystal 32 is arranged in a portion surrounded by 28.

  The first electrode substrate 22 includes a plurality of electrode terminal portions 25cb that are electrically connected to the second driving transparent electrode 25b of the second electrode substrate 23 through a conductive material (not shown) disposed at the position where the sealing material 28 is disposed. It is provided at a predetermined position from the display drive unit 22a to the terminal unit 22b.

  The electrode terminal portion 25ca of each first driving transparent electrode 25a provided on the terminal portion 22b, each electrode terminal portion 25cb conducted to each second driving transparent electrode 25b, and each terminal electrode 30 are for driving. The IC chip 31 is electrically connected to each land 31a of the display driving IC chip 31. As a result, the display driving IC chip 31 is mounted on the terminal portion 22 b of the first electrode substrate 22. The display drive IC chip 31 is conductively connected to a drive circuit (not shown) for controlling the drive of the liquid crystal display device 21 via the flexible wiring board 29.

  Further, the dielectric 35 is provided in the vicinity of the mounting position of the display driving IC chip 31 on the terminal portion 22 b and between the display driving IC chip 31 and the flexible wiring board 29, with each predetermined terminal electrode 30. And a bypass capacitor 37 in which the conductors 36 are sequentially laminated. Also in this embodiment, among the terminal electrodes 30 connected to the lands 31a, as in the embodiment of the touch panel device using the electrode substrate 22 according to the present invention shown in FIGS. A dielectric 35 and a conductor 36 are sequentially stacked on the terminal electrode 30 connected to the Vdd terminal and the Vss terminal of each land 31a so as to function as a bypass capacitor 37. In the present embodiment, for example, an acrylic resin film can be cited as an example of the dielectric 35, and an aluminum film can be cited as an example of the conductor 36.

  In the liquid crystal display device 21 according to the present embodiment, a touch panel device may be disposed on the viewing side of the liquid crystal display device 21.

  Next, the operation of this embodiment will be described.

  According to the liquid crystal display device 21 according to the present embodiment, the display driving IC chip 31 and the flexible wiring substrate 29 are located in the vicinity of the mounting position of the display driving IC chip 31 on the terminal portion 22b of the first electrode substrate 22. The bypass capacitor 37 can be provided by sequentially laminating the dielectric 35 and the conductor 36 on each predetermined terminal electrode 30. Thus, the bypass capacitor 37 can be provided in the power supply line between the drive circuit and the display drive IC chip 31 in the vicinity of the display drive IC chip 31. Therefore, excessive voltage fluctuation can be reliably reduced and radiation can be performed. Generation of noise can be suppressed. At the same time, in particular, in the passive matrix display device, the bypass capacitor 37 can be easily provided by sequentially stacking the dielectric 35 and the conductor 36 on each predetermined electrode without using the chip-type bypass capacitor 37. Therefore, the manufacturing process of the liquid crystal display device 21 can be simplified and the manufacturing cost can be reduced.

  Therefore, according to the liquid crystal display device 21 according to the present embodiment, the operation of the display driving IC chip 31 is stabilized by more efficiently reducing excessive voltage fluctuations and suppressing generation of radiation noise. In addition, the manufacturing cost of the liquid crystal display device 21 can be reduced.

  In addition, this invention is not limited to the said embodiment, A various change is possible as needed.

  For example, the display device may be applied to an active matrix type. Further, a chip capacitor may be further provided in the power supply circuit of the external wiring.

DESCRIPTION OF SYMBOLS 1 Touch panel apparatus 2 Electrode substrate 2a Drive part (sensor drive part)
2b Terminal portion 5a (5) Driving electrode (first driving transparent electrode)
5b (5) Driving electrode (second driving transparent electrode)
5ca, 5cb Electrode terminal part 7 Insulator 8 Bridge wiring 9 External wiring (flexible wiring board)
10 terminal electrode 11 driving IC chip 11a land 15 dielectric 16 conductor 17 bypass capacitor

Claims (5)

A drive unit for performing sensor drive or display drive and a terminal unit are provided, the drive unit is provided with a plurality of drive electrodes, and each of the drive electrodes is extended to the terminal unit to form an electrode terminal unit. In addition, a plurality of terminal electrodes connected to the external wiring are provided independently from the respective driving electrodes, and electrodes on which the driving IC chips conductively connected to the respective electrode terminal portions and the respective terminal electrodes are mounted In the substrate,
A bypass capacitor in which a dielectric and a conductor are sequentially laminated on the terminal electrode that is near the mounting position of the driving IC chip in the terminal portion and between the driving IC chip and the external wiring. Provided ,
The bypass capacitor is divided such that one of the adjacent terminal electrodes is arranged in parallel in the length direction, and the other terminal electrode of the adjacent terminal electrodes is in the length direction. In the middle part, it has the 1st convex part which protrudes in the direction of the one terminal electrode, the 1st convex part is arranged while the one terminal electrode was divided, and the electric conductor was divided An electrode substrate comprising: a second protrusion that connects the one terminal electrode and protrudes toward the other terminal electrode . An electrode substrate having a sensor driving part and a terminal part, wherein the sensor driving part is provided with a plurality of driving electrodes, and each driving electrode is extended to the terminal part to form an electrode terminal part; In the touch panel device in which a plurality of terminal electrodes connected to the wiring are provided independently from the respective driving electrodes, and the driving IC chips that are conductively connected to the respective electrode terminal portions and the respective terminal electrodes are mounted. ,
A bypass capacitor in which a dielectric and a conductor are sequentially laminated is provided on the terminal electrode in the vicinity of the mounting position of the driving IC chip in the terminal portion and between the driving IC chip and external wiring. It is and,
The bypass capacitor is divided such that one of the adjacent terminal electrodes is arranged in parallel in the length direction, and the other terminal electrode of the adjacent terminal electrodes is in the length direction. In the middle part, it has the 1st convex part which protrudes in the direction of the one terminal electrode, the 1st convex part is arranged while the one terminal electrode was divided, and the electric conductor was divided A touch panel device comprising: a second convex portion for connecting the one terminal electrode and projecting toward the other terminal electrode . The touch panel device according to claim 2,
Each of the driving electrodes has a first driving transparent electrode extending in the first direction and a second driving transparent electrode extending in the second direction intersecting the first direction,
Each of the first driving transparent electrodes and each of the second driving transparent electrodes is provided so as to intersect with one surface of the same electrode substrate, and in each of the intersecting regions, the one of the first driving electrodes. The transparent electrode for driving or each of the second driving transparent electrodes is made conductive by a bridge wiring via an insulator provided on the other second driving transparent electrode or each of the first driving transparent electrodes. Are provided to cross each other,
The touch panel device in which the driving electrodes and the terminal electrodes, the insulator and the dielectric, the bridge wiring, and the conductor are manufactured in the same process. A pair of substrates disposed opposite to each other;
One of the pair of substrates is an electrode substrate having a display driving portion formed to face the other substrate and a terminal portion formed larger in a planar shape than the other substrate. ,
A plurality of driving electrodes are provided in the display driving unit, and the driving electrodes are extended to the terminal unit to form electrode terminal units, and a plurality of terminal electrodes connected to external wiring are provided in the terminal driving unit. In a display device provided with a driving IC chip provided independently from each driving electrode and conductively connected to each electrode terminal portion and each terminal electrode,
A bypass capacitor in which the dielectric and the conductor are sequentially laminated on the terminal electrode in the vicinity of the mounting position of the driving IC chip in the terminal portion and between the driving IC chip and the external wiring. Is provided ,
The bypass capacitor is divided such that one of the adjacent terminal electrodes is arranged in parallel in the length direction, and the other terminal electrode of the adjacent terminal electrodes is in the length direction. In the middle part, it has the 1st convex part which protrudes in the direction of the one terminal electrode, the 1st convex part is arranged while the one terminal electrode was divided, and the electric conductor was divided A display device comprising: a second protrusion that connects the one terminal electrode and protrudes toward the other terminal electrode . The display device according to claim 4,
A passive matrix display device comprising: a plurality of driving electrodes provided on the electrode substrate; and a driving electrode on the other side provided on the other substrate intersecting the plurality of driving electrodes.

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