CN102799295A - Touch device and touch display device - Google Patents

Abstract

The invention provides a touch device and a touch display device. The touch device comprises a transparent substrate, a touch sensing structure, a decoration layer, a wiring layer, a protection layer and a shielding layer. The decoration layer is arranged on the transparent substrate and is positioned in a non-touch area. The wiring layer is arranged on the decoration layer, the protection layer is arranged on the transparent substrate and at least covers the touch sensing structure and the wiring layer, and the shielding layer is at least arranged on the protection layer and is positioned in the non-touch area.

Description

Touch device and touch display device

technical field

The touch technology of the present invention is particularly related to a touch device with high reliability and low light leakage rate.

Background technique

As shown in FIG. 6, a conventional touch device 100 has a glass substrate 102, and a silicide insulating layer 104 formed on the glass substrate 102, a plurality of touch sensing electrodes (such as X-axis electrodes 106a and Y-axis electrodes 106 b ), wiring layer 108 , organic insulating layer 110 and decoration layer 112 . The X-axis electrodes 106a and the Y-axis electrodes 106b, for example, can be arranged along two directions perpendicular to each other. The shaft electrodes 106b may be connected to each other by electrode connection pads 114 . The wiring layer 108 includes a plurality of metal wirings, and a silicide insulating layer 116 completely covers the X-axis electrode 106a, the Y-axis electrode 106b, the wiring layer 108, etc. as a protection layer.

As shown in the existing design shown in Figure 6, without any protection for the frame of a traces on lens, it is easy to have problems such as reliability or scratches. Furthermore, since the designs of cover lenses on the market are very diverse, special-shaped edging processing is required to obtain the desired shape. However, special-shaped edging processing can easily lead to serious edge exposure problems.

Contents of the invention

The invention provides a touch device with high reliability and low light leakage rate.

According to the design of an embodiment of the present invention, a touch device is divided into a touch operation area and a non-touch area and includes a transparent substrate, a touch sensing structure, a decoration layer, and a routing layer. layer), a protective layer and a masking layer. The touch sensing structure is disposed on one side of the transparent substrate and located in the touch operation area. The decoration layer is disposed on the transparent substrate and located in the non-touch area. The routing layer is disposed on the decoration layer, the protective layer is disposed on the transparent substrate and at least covers the touch sensing structure and the routing layer, and the shielding layer is disposed at least on the protective layer and is located in the non-touch area.

In one embodiment, the non-touch area is formed on the periphery of the touch device, and the shielding layer is at least disposed on the periphery of the non-touch area.

In one embodiment, there is a gap area between the outer edge of the decoration layer and the side edge of the transparent substrate, and the shielding layer at least overlaps the gap area.

In one embodiment, the touch sensing structure includes a plurality of first electrode series and a plurality of second electrode series, and the first electrode series and the second electrode series are spaced apart from each other.

In one embodiment, the masking layer includes ink material.

In one embodiment, the shielding layer includes semi-transparent, low-transmitting, opaque or infrared-transmissive materials.

In one embodiment, the shielding layer is formed on the protection layer and has a zigzag distribution around the decoration layer.

In one embodiment, the protection layer and the shielding layer form an opening on the wiring layer to expose part of the wiring layer.

In one embodiment, the touch device further includes a transparent conductive pad layer disposed on the decoration layer, and the transparent conductive pad layer is respectively electrically connected to the wiring layer and an external circuit.

In one embodiment, an insulating layer is disposed on the protective layer and only distributed in the non-touch area, and the thickness of the insulating layer is 3 to 100 times that of the protective layer.

In one embodiment, the touch sensing structure is a one-down conduction touch sensing structure or a bridge conduction touch sensing structure.

Another embodiment of the present invention provides a touch display device, which uses an optical glue to combine the above touch device and a display device.

Through the design of the above embodiment, since the shielding layer overlaps at least the gap area between the outer edge of the decoration layer and the side edge of the transparent substrate, the problem of edge light leakage can be effectively solved. In addition, since the shielding layer is disposed on the periphery of the touch device, it can provide a frame edge protection effect covering the wiring structure of the board, and can avoid problems such as scratches and punctures caused by the exposed decorative layer, thereby effectively improving product reliability.

Description of drawings

FIG. 1 is a schematic plan view of a touch device according to an embodiment of the invention.

FIG. 2 is an enlarged cross-sectional schematic diagram of FIG. 1 .

FIG. 3 is a schematic diagram showing the overlapping positions of the shielding layer and the decoration layer according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of a touch device according to another embodiment of the present invention.

FIG. 5 is a schematic diagram of a touch display device according to an embodiment of the invention.

FIG. 6 is a schematic diagram of a conventional touch device.

Figure number:

10a, 10b touch device

11 The first electrode series

12 transparent substrate

13 Second electrode series

14 insulation layer

16 decorative layers

18 wiring layer

22a first transparent electrode

22b second transparent electrode

24 electrical insulating layer

25 first connecting line

26 Second connection line

32 layers of protection

34 flexible circuit board

36 Anisotropic conductive adhesive

38 masking layer

44 insulating layer

46 transparent conductive pad layer

50 display devices

52 optical glue

60 touch display device

100 touch devices

102 glass substrate

104 silicide insulating layer

106a X-axis electrode

106b Y-axis electrode

108 wiring layer

110 organic insulating layer

112 decorative layers

114 electrode connection pad

116 silicide insulating layer

N non-touch area

T touch operation area

P Outer edge of decorative layer

Q side edge of transparent substrate

S clearance area

Detailed ways

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention. In order to make the above and other objects, features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic plan view of a touch device according to an embodiment of the present invention, and FIG. 2 is an enlarged schematic cross-sectional view of FIG. 1 . Please refer to FIG. 1 and FIG. 2 at the same time. According to an embodiment of the present invention, a touch device 10a is composed of a transparent substrate 12 and a laminated structure formed on the transparent substrate 12, and the touch device 10a can be divided into a touch Control operation area T and a non-touch area N. In this embodiment, the non-touch area N is located around the touch device 10a and surrounds the touch operation area T. As shown in FIG. There is a touch sensing structure in the touch operation area T of the touch device 10a to detect the touch position, and in the laminated structure of the non-touch area N of the touch device 10a, a decoration layer 16 is arranged on the transparent substrate 12 , and there is a gap area S between the outer edge P of the decoration layer 16 and the side edge Q of the transparent substrate 12 . The wiring layer 18 is disposed on the decoration layer 16 , the wiring layer 18 may include a plurality of metal wirings, and the touch sensing structure in the touch operation area T is electrically connected to the metal wirings. Furthermore, an insulating layer 14 can be formed on the transparent substrate 12 and cover the transparent substrate 12 , that is, the insulating layer 14 can be interposed between the touch sensing structure, the decoration layer 16 and the transparent substrate 12 . The material of the transparent substrate 12 is not limited, for example, it can be a glass substrate or a plastic substrate, and the transparent substrate 12 itself can also be used as a cover lens. The decoration layer 16 can be located on the periphery of the transparent substrate 12 to shield metal traces, and the material of the decoration layer 16 can be composed of photoresist, diamond-like, ceramic or ink. The touch sensing structure of the touch operation area T can be a single-layer transparent electrode structure or a multi-layer transparent electrode structure, including a plurality of first electrode series 11 and a plurality of second electrode series 13, and these first electrode series An electrode series 11 and the second electrode series 13 are spaced apart from each other. For example, the touch sensing structure shown in FIG. 2 has an electrode structure of an underground island, and these first transparent series 11 connect adjacent first transparent electrodes in series via a plurality of first connection lines 25. 22a, and these second transparent series are connected in series with adjacent second transparent electrodes 22b via a plurality of second connection lines 26, and at least between the opposite first connection lines 25 and second connection lines 26 there is an electrical insulating layer 24 . The above is only one embodiment of the touch sensing structure of the present invention. The touch sensing structure of the present invention is not limited to a bottom-conducting island-shaped electrode structure, and its connecting lines can also be connected from above to form a bridge-shaped electrode structure. Alternatively, the touch-sensing structures can be located on both sides of the substrate, and the multiple transparent electrodes of the present invention are not limited to rhombus, triangle, straight line and other geometric shapes or non-standard shapes.

In this embodiment, a protective layer 32 covers both the touch electrode structure in the touch operation area T and the laminated structure in the non-touch area N to protect the overall structure of the touch device 10a, and the protective layer 32 can be made of, for example, It is composed of silicide inorganic materials. Another insulating layer 44 can be formed on the passivation layer 32 and only distributed in the non-touch area N. As shown in FIG. The thickness of the insulating layer 44 can be 3 to 100 times the thickness of the protective layer 32 , and the insulating layer 44 can be made of inorganic materials or organic materials. A transparent conductive pad layer 46 is formed on the decoration layer 16 and electrically connected to a plurality of metal traces in the trace layer 18 . The material of the transparent conductive pad layer 46 can be, for example, ITO transparent conductive film. The protection layer 32 and the insulating layer 44 respectively form an opening in a bonding area on the transparent conductive pad layer 46 to expose part of the transparent conductive pad layer 46 . The exposed wiring layer 18 can be electrically connected to an external circuit through an anisotropic conductive glue (ACF) 36, for example, can be electrically connected to a transmission element (such as a flexible circuit board 34) or an electronic component (such as an IC chip; not shown). The shielding layer 38 at least overlaps the gap region S and attaches the protective layer 32 and the insulating layer 44 , and the shielding layer 38 can form an opening at a position corresponding to the bonding region of the transparent conductive pad layer 46 . In this embodiment, the shielding layer 38 may be made of ink material and formed on the protection layer 32 . Generally speaking, since the designs of cover lenses on the market are very diverse, special-shaped edging processing and other processes are required to achieve it. However, special-shaped processing is an operation that is damaged by external force, and the decorative layer 16 is easily damaged by vibration, so usually the The decorative layer 16 is retracted for a certain distance on the principle of not being damaged by the irregular shape. However, when the decoration layer 16 retracts from the side edge Q of the transparent substrate 12 for a certain distance, the problem of edge light leakage is likely to occur. Through the design of the above embodiment, as shown in FIG. 3 , since the shielding layer 38 overlaps at least the gap region S between the outer edge P of the decoration layer and the side edge Q of the transparent substrate, the problem of edge light leakage can be effectively solved. In addition, since the shielding layer 38 is disposed on the periphery of the touch device 10a, for example, a cross-shaped distribution around the decoration layer 16 can be formed in the upper area of the wiring layer 18, so it can provide frame protection for the wiring structure of the cover board. effect, and can avoid problems such as scratches and punctures caused by the exposed decoration layer 16, and can effectively improve product reliability. Of course, the material of the shielding layer 38 is not limited to ink, it only needs to be a semi-transparent, low-transmittance or opaque material to obtain the effect of eliminating edge light leakage, such as photoresist, diamond-like or ceramic materials constituted. Alternatively, the shielding layer 38 can also be made of a material that allows infrared light to pass through. Furthermore, the shielding layer 38 only needs to be disposed on the periphery of the touch device to form a square distribution around the decoration layer 16, for example, to achieve the effect of improving product reliability, and the distribution of the shielding layer 38 does not limit the lamination gap area. S.

FIG. 4 is a schematic diagram of a touch device 10b according to another embodiment of the present invention. In the touch device 10b of FIG. 4 , the protective layer 32 located at the position of the overlapping gap region S can be omitted, that is, the insulating layer 44 can extend downwards to omit the protective layer 32 , and the shielding layer 38 is only attached to the insulating layer 44 .

Moreover, the touch sensing structure in the touch operation area of each of the above-mentioned embodiments is only an example, and the shape of the touch sensing structure is not limited at all, as long as the effect of detecting the touch position can be obtained, for example, it can be A bottom conduction touch sensing structure, a bridge conduction touch sensing structure or other touch sensing structures can be used. In addition, the touch device of each of the above embodiments can be combined with a display device to form a touch display device. For example, as shown in FIG. 5, a display device 50 can be attached to the touch device 10a through optical glue 52 to form a touch display device 60, and the type of the display device 50 is not limited, for example, it can be a liquid crystal display, Organic light emitting displays, electrowetting displays or electrophoretic displays, etc.

The present invention has been described by the above embodiments and variations. All the embodiments and variations of the present invention are illustrative and non-restrictive. Based on the spirit and scope of the present invention, various variations of the touch panel or touch device including the above features are covered by the present invention. The invention is defined by the claims.

Claims (16)

1. a contactor control device is characterized in that, said contactor control device is divided into a touch control operation district and a non-Touch Zone, and said contactor control device comprises:

One transparency carrier;

One touch-control sensing structure is arranged at a side of said transparency carrier and is positioned at said touch control operation district;

One decorative layer is arranged on the said transparency carrier and is positioned at said non-Touch Zone;

One routing layer is arranged on the said decorative layer, and said routing layer is electrically connected said touch-control sensing structure;

One protective seam is arranged on the said transparency carrier and covers said touch-control sensing structure and said routing layer at least; And

One shielding layer is arranged on the said protective seam at least, and is positioned at said non-Touch Zone.

2. contactor control device as claimed in claim 1 is characterized in that said non-Touch Zone is formed at the periphery of said contactor control device, and said shielding layer is located at the periphery of said non-Touch Zone at least.

3. contactor control device as claimed in claim 1 is characterized in that, has a gap area between the outer rim of said decorative layer and the lateral margin of said transparency carrier, and the superimposed at least said gap area of said shielding layer.

4. contactor control device as claimed in claim 1 is characterized in that, said touch-control sensing structure comprises a plurality of first electrode tandems and a plurality of second electrode tandem, and the said first electrode tandem and the said second electrode tandem are spaced apart from each other.

5. contactor control device as claimed in claim 1 is characterized in that, said shielding layer is constituted by ink material, photoresist material, type brill or stupalith.

6. contactor control device as claimed in claim 1 is characterized in that, that said shielding layer comprises is semi-transparent, low light transmission, light tight or infrared light light transmissive material.

7. contactor control device as claimed in claim 1 is characterized in that, said decorative layer is constituted by ink material, photoresist material, type brill or stupalith.

8. contactor control device as claimed in claim 1 is characterized in that, the hollow that said shielding layer has around said decorative layer distributes.

9. contactor control device as claimed in claim 1 is characterized in that, said contactor control device comprises that more an insulation course is formed on the said glass substrate, and said touch-control sensing structure and said decorative layer are formed on the said insulation course.

10. contactor control device as claimed in claim 1 is characterized in that, said protective seam and said shielding layer form an opening with the said routing layer of expose portion on said routing layer.

11. contactor control device as claimed in claim 1 is characterized in that, said contactor control device comprises that more an electrically conducting transparent connection pad layer is arranged on the said decorative layer, and said electrically conducting transparent connection pad layer is electrically connected a said routing layer and an external circuit respectively.

12. contactor control device as claimed in claim 1; It is characterized in that; Said contactor control device comprises that more an insulation course is arranged at the one side of said protective seam; And only be distributed in said non-Touch Zone, the thickness of said insulation course is 3 times to 100 times of thickness of said protective seam, and said shielding layer attaches said protective seam or said insulation course.

13. contactor control device as claimed in claim 12; It is characterized in that; Said contactor control device comprises that more an electrically conducting transparent connection pad layer is arranged on the said decorative layer; Said protective seam and said insulation course form an opening respectively on said electrically conducting transparent connection pad layer, make said electrically conducting transparent connection pad layer be electrically connected a said routing layer and an external circuit respectively with the said electrically conducting transparent connection pad of expose portion layer.

14. contactor control device as claimed in claim 1 is characterized in that, said transparency carrier is glass substrate or plastic substrate.

15. a touch control display apparatus is characterized in that, said touch control display apparatus comprises:

A kind of contactor control device, said contactor control device are divided into a touch control operation district and a non-Touch Zone, and said contactor control device comprises:

One transparency carrier;

One touch-control sensing structure is arranged at a side of said transparency carrier and is positioned at said touch control operation district;

One decorative layer is arranged on the said transparency carrier and is positioned at said non-Touch Zone;

One routing layer is arranged on the said decorative layer, and said routing layer is electrically connected at said touch-control sensing structure;

One protective seam is arranged on the said transparency carrier and covers said touch-control sensing structure and said routing layer at least; And

One shielding layer is arranged at the periphery of said contactor control device at least; And

One display device is pasted to said contactor control device through an optical cement.

16. touch control display apparatus as claimed in claim 15 is characterized in that, said display device is LCD, OLED, electric moistening display or electrophoretic display device (EPD).

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