CN101739174A - Touch display panel and touch substrate - Google Patents

Abstract

The invention provides a touch display panel and a touch substrate. The touch unit is configured on the display panel and comprises a plurality of first sensing series and a plurality of second sensing series. The first sensing serials are electrically insulated from each other, each first sensing serial comprises a plurality of first sensing pads and a plurality of first bridging lines which are connected in series, and two adjacent first sensing pads in the same first sensing serial are connected with each other through one first bridging line. The second sensing serials are electrically insulated with each other, each second sensing serial comprises a plurality of second sensing pads and a plurality of second bridging lines which are connected in series, and two adjacent second sensing pads in the same second sensing serial are connected with each other through at least two first bridging lines with the arrangement distance larger than 140 micrometers. The bridging lines in the touch display panel and the touch substrate are not easy to be perceived by a user, and the touch display panel and the touch substrate have better visual effects.

Description

Touch display panel and touch substrate

technical field

The present invention relates to a flat panel display, and in particular to a touch sensing display panel and a touch substrate.

Background technique

Touch panels are roughly classified into resistive touch panels, capacitive touch panels, optical touch panels, acoustic wave touch panels, and electromagnetic touch panels according to their sensing methods. Since the capacitive touch panel has the advantages of fast response time, good reliability and high durability, the capacitive touch panel has been widely used in electronic products. According to different structures and manufacturing methods, capacitive touch panels can be roughly divided into two types: surface mount type and integrated/built-in type (on-cell/in-cell). For surface-mounted capacitive touch panels, the sensing series is usually fabricated on an auxiliary substrate, and then the auxiliary substrate on which the sensing series has been fabricated is attached to the outer surface of the display. Obviously, , the externally mounted touch panel will have a certain thickness. Compared with the surface-mounted touch panel, the integrated/built-in touch panel is very beneficial to the thinning and lightening of the display.

Regardless of the integrated/built-in touch panel or the surface-mounted touch panel, they all face the problem of insufficient yield rate in the manufacturing process or a decrease in yield rate caused by electrostatic discharge. For example, most of the current integrated/built-in touch panels are made on one surface of the substrate first to make the touch circuit, and then make a color filter film on the other surface of the substrate. At the same time, the touch circuit is often broken due to insufficient yield in the manufacturing process, or damaged by electrostatic discharge. In addition, no matter the integrated/built-in touch panel or the surface-mounted touch panel, when the user touches the integrated/built-in touch panel or the surface-mounted touch panel with a finger, electrostatic discharge will occur. Phenomena may also occur, which will lead to the damage of the touch circuit.

In a traditional capacitive touch panel, metal bridge wires are used to bridge the adjacent sensing pads where the X sensing series and Y sensing series intersect to prevent the X sensing series from intersecting with the Y sensing series. There is a short-circuit problem in the string at the interleave. For example, two adjacent sensing pads in the X sensing series or Y sensing series are electrically connected through a metal bridge line. When electrostatic discharge occurs, the metal bridge line may The X sensing series or the Y sensing series cannot operate normally due to being blown out. Therefore, the prior art (such as the technical content disclosed in Taiwan Patent TW M344544) proposes a design in which two adjacent sensing pads are electrically connected through two parallel metal bridge lines, and this design helps to improve electrostatic discharge However, if the two metal bridging wires are too close together, the bridging wires will be easily noticed by the user, which seriously affects the overall visual effect.

Contents of the invention

The invention provides a touch display panel and a touch substrate, the bridging lines of which are not easy to be noticed by users and have good visual effect.

The invention provides a touch display panel, which includes a display panel and a touch unit. The touch unit is configured on the display panel, and the touch unit includes a plurality of first sensing series and a plurality of second sensing series. The first sensing series are electrically insulated from each other, and each first sensing series includes a plurality of first sensing pads and a plurality of first bridge lines connected in series, and two of the same first sensing series Adjacent first sensing pads are connected to each other through one of the first bridge lines. The second sensing series are electrically insulated from each other, and each second sensing series includes a plurality of second sensing pads and a plurality of second bridge lines in series, and the two sensing pads in the same second sensing series Adjacent second sensing pads are connected to each other through at least two second bridging lines with an arrangement pitch larger than 140 microns.

The present invention further provides a touch control substrate, which includes a substrate, a plurality of first sensing series and a plurality of second sensing series. The first sensing series are electrically insulated from each other, and each first sensing series includes a plurality of first sensing pads and a plurality of first bridge lines connected in series, and two of the same first sensing series Adjacent first sensing pads are connected to each other through one of the first bridge lines. The second sensing series are electrically insulated from each other, and each second sensing series includes a plurality of second sensing pads and a plurality of second bridge lines in series, and the two sensing pads in the same second sensing series Adjacent second sensing pads are connected to each other through at least two second bridging lines with an arrangement pitch greater than 140 microns.

In an embodiment of the present invention, the above-mentioned touch unit is disposed on an outer surface of the display panel.

In an embodiment of the present invention, the above-mentioned touch display panel may further include an auxiliary substrate, and the auxiliary substrate is disposed between the touch unit and the display panel.

In an embodiment of the present invention, the above-mentioned touch unit is built in the display panel.

In an embodiment of the present invention, the above-mentioned first sensing pad and the first bridge line are made of the same material.

In an embodiment of the present invention, the material of the above-mentioned first sensing pad and the first bridge line includes a transparent conductive material.

In an embodiment of the present invention, the materials of the first sensing pad, the first bridge line and the second sensing pad are the same

In an embodiment of the present invention, the material of the first sensing pad, the first bridge line and the second sensing pad includes a transparent conductive material, and the material of the second bridge line includes metal.

In an embodiment of the present invention, in the same second sensing series, the arrangement pitch of at least two first bridge lines connected to two adjacent second sensing pads is between 400 micrometers and 600 micrometers.

In an embodiment of the present invention, in the same second sensing series, the arrangement pitch of at least two first bridge lines connected to two adjacent second sensing pads is between 600 micrometers and 3000 micrometers.

In an embodiment of the present invention, in the same second sensing series, the arrangement pitch of at least two first bridge lines connected to two adjacent second sensing pads is between 2000 microns and 3000 microns.

In an embodiment of the present invention, each second sensing pad has at least two branch portions, and each branch portion is respectively connected to one of the second bridge lines.

In an embodiment of the present invention, each first sensing pad has a plurality of notches, and each branch part extends into one of the notches respectively.

In an embodiment of the present invention, there is a gap between each branch portion and the corresponding first sensing pad, and the gap is between 10 microns and 100 microns.

In an embodiment of the present invention, the above-mentioned touch unit may further include a plurality of floating conductive patterns, and the floating conductive patterns are disposed between the first sensing series and the branch portion.

In an embodiment of the present invention, the above-mentioned touch unit may further include a plurality of dielectric patterns, wherein the dielectric patterns are respectively located under one of the second bridge lines, so that each second bridge line is connected to the first sensing The strings are electrically insulated.

In an embodiment of the present invention, the above-mentioned touch unit may further include a plurality of floating conductive patterns, and the floating conductive patterns are disposed between the first sensing series and the second sensing series.

In an embodiment of the present invention, the above-mentioned display panel has a plurality of sub-pixels arranged in an array, and in the same second sensing series, at least two first bridges connected to two adjacent second sensing pads The arrangement pitch of the wires is an integer multiple of the length or width of each sub-pixel.

Based on the above, since two adjacent second sensing pads in the same second sensing series are connected to each other through at least two first bridge lines with an arrangement pitch greater than 140 microns, the touch display panel of the present invention and The bridging lines in the touch substrate are not easy to be noticed by the user, and have better visual effects.

Description of drawings

1A to 1C are schematic diagrams of different touch display panels in an embodiment of the present invention;

2A to 2C are schematic top views of touch units in different embodiments of the present invention;

FIG. 3 is a schematic top view of a touch display panel in an embodiment of the present invention.

Figure number:

100: touch display panel

110: display panel

112: TFT array substrate

114: Color filter substrate

116: liquid crystal layer

120: Touch unit

122: first sensing series

122P: the first sensing pad

122B: First bridge wire

124: Second sensing series

124P: Second sensing pad

124B: Second bridge wire

124BR, 124BR': branch

126: Dielectric pattern

130: (auxiliary) substrate

P: Arrangement pitch

T: touch substrate

N1, N2: gap

G1, G2: Gap

F: floating conductive pattern

SP: sub-pixel

Detailed ways

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

1A to 1C are schematic diagrams of different touch display panels in an embodiment of the present invention. Please refer to FIG. 1A , the touch display panel 100 of this embodiment includes a display panel 110 and a touch unit 120 disposed on the display panel 110 . In this embodiment, the touch unit 120 can be built in the display panel 110 . For example, the display panel 110 can be a liquid crystal display panel, which includes a thin film transistor array substrate 112, a color filter substrate 114, and a liquid crystal layer 116, wherein the liquid crystal layer 116 is located between the thin film transistor array substrate 112 and the color filter layer. between the color filter substrates 114 , and the touch unit 120 is disposed on the inner surface of the color filter substrate 114 . In other words, the touch unit 120 is located between the color filter substrate 114 and the liquid crystal layer 116, which is a so-called in-cell design. The display panel 110 can also be an organic light emitting display panel, an electrophoretic display panel or a plasma display panel.

In addition to being built into the display panel, the touch unit 120 can also be combined with the display panel in other ways, as shown in FIG. 1B and FIG. 1C . Please refer to FIG. 1B first, the touch unit 120 can be formed on the outer surface of the color filter substrate 114, which is a so-called on-cell design. Of course, the touch unit 120 can also be fabricated on a substrate (such as an auxiliary substrate 130), and then the substrate 130 on which the touch unit 120 has been formed is attached to the outer surface of the color filter substrate 114, as shown in FIG. As shown in 1C, it is the so-called Added-on design. It should be noted that the substrate 130 (ie, the auxiliary substrate 130 ) and the touch unit 120 in FIG. 1C constitute the touch substrate T of this embodiment. It can be known from the above that the touch unit 120 of the present invention can be fabricated on a color filter substrate 114 , a thin film transistor array substrate 112 or an auxiliary substrate 130 , but it is not limited thereto.

The following will describe in detail the different types of touch units 120 in this embodiment.

2A to 2C are schematic top views of touch units in different embodiments of the present invention. Please refer to FIG. 2A first, the touch unit 120 of this embodiment includes a plurality of first sensing series 122 and a plurality of second sensing series 124 . The first sensing series 122 are electrically insulated from each other. Each first sensing series 122 includes a plurality of first sensing pads 122P and a plurality of first bridge lines 122B connected in series. In the same first sensing series Two adjacent first sensing pads 122P in the row 122 are connected to each other through one of the first bridge lines 122B. The second sensing series 124 are electrically insulated from each other. Each second sensing series 124 includes a plurality of second sensing pads 124P and a plurality of second bridge lines 124B in series. In the same second sensing series Two adjacent second sensing pads 124P in the column 124 are connected to each other through at least two second bridge lines 124B with an arrangement pitch P greater than 140 microns, and the arrangement pitch P of the at least two second bridge lines 124B is preferably greater than 140 microns , less than 3000 microns. In this embodiment, the aforementioned arrangement pitch P is, for example, between 400 microns and 600 microns. Since the arrangement pitch P is greater than 140 microns, the second bridging line 124B is not easy to be noticed by the user, and has better performance. Visual effect.

As shown in FIG. 2A , each second sensing pad 124P has at least two branch portions 124BR, and each branch portion is respectively connected to one of the second bridge lines 124B, and between the first sensing series 122 and the second The first bridge portion 122B at the intersection of the sensing series 124 has a plurality of gaps N1, and each branch portion 124BR extends into one of the gaps N1. In an embodiment of the present invention, the materials of the first sensing pad 122P and the first bridge line 122B are the same. In other words, the first sensing pad 122P and the first bridge line 122B belong to the same layer of patterned film, and the materials of the first sensing pad 122P and the first bridge line 122B are both transparent conductive materials, such as indium tin oxide, indium zinc oxides, etc. In other embodiments of the present invention, the first sensing pad 122P, the first bridge line 122B, and the second sensing pad 124 can all be made of the same material. In other words, the first sensing pad 122P, the first bridge line 122B, and the second sensing pad 124 belong to the same layer of patterned film, and the materials of the first sensing pad 122P, the first bridge line 122B, and the second sensing pad 124 All are transparent conductive materials, such as indium tin oxide, indium zinc oxide, etc. In addition, the material of the second bridge line 124B is, for example, metal.

In order to effectively avoid the short circuit between the first sensing series 122 and the second sensing series 124, the touch unit 120 of this embodiment may further include a plurality of dielectric patterns 126, wherein the dielectric patterns 126 are respectively located therein. One of the second bridge lines 124B is placed below to ensure that each second bridge line 124B is electrically insulated from the first sensing series 122 . In addition, in this embodiment, the above-mentioned touch unit 120 may further include a plurality of floating conductive patterns F, and the floating conductive patterns F are arranged between the first sensing series 122 and the branch portion 124BR, so as to further improve Cross-talk between the first sensing series 122 and the branch portion 124BR. For example, there is a gap G1 between the branch portion 124BR and the corresponding first sensing pad 122P, and the gap G1 is between 10 microns and 100 microns.

Then please refer to FIG. 2B and FIG. 2C , the touch unit 120 shown in FIG. 2B and FIG. 2C is similar to the touch unit 120 shown in FIG. 2A , the main difference is: in FIG. 2B and FIG. 2C In the touch unit 120 in , the arrangement pitch P is larger, for example, between 600 microns and 3000 microns (as shown in FIG. 2B ), or between 2000 microns and 3000 microns (as shown in FIG. 2C ).

As shown in FIG. 2B and FIG. 2C , in this embodiment, each second sensing pad 124P has at least two branch portions 124BR', and each branch portion 124BR' is respectively connected to one of the second bridge lines 124B. In addition, each first sensing pad 122P has a plurality of notches N2, and each branch portion 124BR' extends into one of the notches N2.

In order to effectively avoid the short circuit between the first sensing series 122 and the second sensing series 124, the touch unit 120 of this embodiment may further include a plurality of dielectric patterns 126, wherein the dielectric patterns 126 are respectively located therein. One of the second bridge lines 124B is placed below to ensure that each second bridge line 124B is electrically insulated from the first sensing series 122 . In addition, in this embodiment, the above-mentioned touch unit 120 may further include a plurality of floating conductive patterns F, and the floating conductive patterns F are disposed between the first sensing series 122 and the branch portion 124BR. For example, there is a gap G2 between the branch portion 124BR' and the corresponding first sensing pad 122P, and the gap G2 is between 10 microns and 100 microns.

FIG. 3 is a schematic top view of a touch display panel in an embodiment of the present invention. 2A to 2C and FIG. 3, the display panel 100 of this embodiment has a plurality of sub-pixels SP arranged in an array, and in the same second sensing series 124, two adjacent second sensing pads The arrangement pitch P of the at least two first bridge lines 122B connected by 124P is an integer multiple of the length or width of each sub-pixel SP, as shown in FIG. 3 , for example, P is an integer multiple of the length of each sub-pixel SP.

Based on the above, since two adjacent second sensing pads in the same second sensing series are connected to each other through at least two first bridge lines with an arrangement pitch greater than 140 microns, the touch display panel of the present invention and The bridging lines in the touch substrate are not easy to be noticed by the user, and have better visual effect.

Claims (33)

1. a touch-control display panel is characterized in that, described touch-control display panel comprises:

One display panel;

One touch control unit be disposed on the described display panel, and described touch control unit comprises:

A plurality of first sensing serials, described a plurality of first sensing serials is electrically insulated each other, each described first sensing serials comprises a plurality of first sensor pads and many first bridging lines of serial connection, and two adjacent first sensor pads in same first sensing serials see through wherein one first bridging line and are connected to each other; And

A plurality of second sensing serials, described a plurality of second sensing serials is electrically insulated each other, each described second sensing serials comprises a plurality of second sensor pads and many second bridging lines of tandem, and two adjacent second sensor pads in same second sensing serials are connected to each other through second bridging line of at least two arrangement pitches greater than 140 microns.

2. touch-control display panel as claimed in claim 1 is characterized in that, described touch control unit is disposed on the outside surface of described display panel.

3. touch-control display panel as claimed in claim 1 is characterized in that described touch-control display panel more comprises an assisting base plate, is disposed between described touch control unit and the described display panel.

4. touch-control display panel as claimed in claim 1 is characterized in that, is built in the described display panel in the described touch control unit.

5. touch-control display panel as claimed in claim 1 is characterized in that, the material of described a plurality of first sensor pads and described many first bridging lines is identical.

6. touch-control display panel as claimed in claim 1 is characterized in that, the material of described a plurality of first sensor pads and described many first bridging lines comprises transparent conductive material.

7. touch-control display panel as claimed in claim 1 is characterized in that, the material of described a plurality of first sensor pads, described many first bridging lines and described a plurality of second sensor pads is identical.

8. touch-control display panel as claimed in claim 1 is characterized in that, the material of first sensor pad, described many first bridging lines and described a plurality of second sensor pads comprises transparent conductive material, and the material of described second bridging line comprises metal.

9. touch-control display panel as claimed in claim 1 is characterized in that, in same second sensing serials, the arrangement pitches of at least two first bridging lines that are connected with two adjacent second sensor pads is between 400 microns to 600 microns.

10. touch-control display panel as claimed in claim 1 is characterized in that, in same second sensing serials, the arrangement pitches of at least two first bridging lines that are connected with two adjacent second sensor pads is between 600 microns to 3000 microns.

11. touch-control display panel as claimed in claim 1 is characterized in that, in same second sensing serials, the arrangement pitches of at least two first bridging lines that are connected with two adjacent second sensor pads is between 2000 microns to 3000 microns.

12. touch-control display panel as claimed in claim 1 is characterized in that, each described second sensor pad has at least two branching portions, and each described branching portion is connected with one second bridging line wherein respectively.

13. touch-control display panel as claimed in claim 12 is characterized in that, each described first sensor pad has a plurality of breach, and each described branching portion extends to respectively wherein in the breach.

14. touch-control display panel as claimed in claim 13 is characterized in that, have a gap between each described branching portion and corresponding first sensor pad, and described gap is between 10 microns to 100 microns.

15. touch-control display panel as claimed in claim 13 is characterized in that, described touch control unit more comprises a plurality of floating conductive pattern, is disposed between described a plurality of first sensing serials and the described branching portion.

16. touch-control display panel as claimed in claim 1, it is characterized in that, described touch control unit more comprises a plurality of dielectric pattern, and wherein each described dielectric pattern lays respectively at wherein one second bridging line below, so that each described second bridging line and described a plurality of first sensing serials are electrically insulated.

17. touch-control display panel as claimed in claim 1 is characterized in that, described touch control unit more comprises a plurality of floating conductive pattern, is disposed between described a plurality of first sensing serials and described a plurality of second sensing serials.

18. touch-control display panel as claimed in claim 1, it is characterized in that, described display panel has the sub-pixel of a plurality of arrayed, and in same second sensing serials, the arrangement pitches of at least two first bridging lines that are connected with two adjacent second sensor pads is the length of each described sub-pixel or the integral multiple of width.

19. a touch base plate is characterized in that, described touch base plate comprises:

One substrate;

A plurality of first sensing serials, described a plurality of first sensing serials is electrically insulated each other, each described first sensing serials comprises a plurality of first sensor pads and many first bridging lines of serial connection, and two adjacent first sensor pads in same first sensing serials see through wherein one first bridging line and are connected to each other; And

A plurality of second sensing serials, described a plurality of second sensing serials is electrically insulated each other, each described second sensing serials comprises a plurality of second sensor pads and many second bridging lines of tandem, and two adjacent second sensor pads in same second sensing serials are connected to each other through second bridging line of at least two arrangement pitches greater than 140 microns.

20. touch base plate as claimed in claim 19 is characterized in that, the material of described a plurality of first sensor pads and described many first bridging lines is identical.

21. touch base plate as claimed in claim 19 is characterized in that, the material of described a plurality of first sensor pads and described many first bridging lines comprises transparent conductive material.

22. touch base plate as claimed in claim 19 is characterized in that, the material of described a plurality of first sensor pads, described many first bridging lines and described a plurality of second sensor pads is identical.

23. touch base plate as claimed in claim 19 is characterized in that, the material of first sensor pad, described many first bridging lines and described a plurality of second sensor pads comprises transparent conductive material, and the material of described second bridging line comprises metal.

24. touch base plate as claimed in claim 19 is characterized in that, in same second sensing serials, the arrangement pitches of at least two second bridging lines that are connected with two adjacent second sensor pads is between 400 microns to 600 microns.

25. touch base plate as claimed in claim 19 is characterized in that, in same second sensing serials, the arrangement pitches of at least two second bridging lines that are connected with two adjacent second sensor pads is between 600 microns to 3000 microns.

26. touch base plate as claimed in claim 19 is characterized in that, in same second sensing serials, the arrangement pitches of at least two second bridging lines that are connected with two adjacent second sensor pads is between 2000 microns to 3000 microns.

27. touch base plate as claimed in claim 19 is characterized in that, each described second sensor pad has at least two branching portions, and second bridging line that each described branching portion is corresponding with it respectively connects.

28. touch base plate as claimed in claim 27 is characterized in that, each described first sensor pad has a plurality of breach, and each described branching portion extends to respectively wherein in the breach.

29. touch base plate as claimed in claim 28 is characterized in that, have a gap between each described branching portion and corresponding first sensor pad, and described gap is between 10 microns to 100 microns.

30. touch base plate as claimed in claim 28 is characterized in that, described touch base plate more comprises a plurality of floating conductive pattern, is disposed between described a plurality of first sensing serials and the described branching portion.

31. touch base plate as claimed in claim 19, it is characterized in that, described touch base plate more comprises a plurality of dielectric pattern, and wherein each described dielectric pattern lays respectively at wherein one second bridging line below, so that each described second bridging line and described a plurality of first sensing serials are electrically insulated.

32. touch base plate as claimed in claim 19 is characterized in that, described touch base plate more comprises a plurality of floating conductive pattern, is disposed between described a plurality of first sensing serials and described a plurality of second sensing serials.

33. touch base plate as claimed in claim 19 is characterized in that, described substrate comprises a colored optical filtering substrates, a thin-film transistor array base-plate or an assisting base plate.

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