TWM491206U - Pattern unnoticeable transparent conductive structure for touch panel - Google Patents

Description

Transparent conductive structure for touch panel with insignificant graphics

The present invention relates to a touch panel, and more particularly to a transparent conductive structure for a touch panel in which the pattern of an etching pattern is not conspicuous.

Touch panel, also known as touch screen, touch screen (English: Touch panel, Touchscreens, Touch pad, etc.), is an inductive liquid crystal display that can receive input signals such as fingers or glue pen tips. The device, when touched on the graphic button on the screen, the tactile feedback system on the screen can drive various linkage devices according to a pre-programmed program, which can be used to replace the mechanical button panel. At present, the touch technology of the touch panel is well known: Analog Resistive, Surface Capacitive, Projected Capacitive, Infrared, Acoustic, Optical, Electromagnetic Inductive and Digital And so on. The biggest advantage of the projected capacitive type is that the contacts do not need to be in direct contact, and the panel can be placed under the transparent substrate to obtain good protection. Even with the glove, the projected capacitive panel can be actuated.

As shown in FIG. 1 , the projected capacitive touch panel is composed of indium tin oxide glass 80 , vertical electrode array 82 , horizontal electrode array 81 and hard shell layer 83 , and vertical electrode array 82 and horizontal electrode array 81 must be mutually There is a gap (gap) to prevent a short circuit between the two. When the human finger touches the surface of the capacitive touch panel, the capacitance of the corresponding position is changed, so that the touch position is detected, and the XY intersection between the vertical electrode column 82 and the horizontal electrode column 81 is also caused. The capacitance value changes. As shown in FIG. 2, when the user views the touch panel from above, the vertical electrode column and the horizontal electrode column may cause a visual trace phenomenon (or optical visibility) in the visual, resulting in the user in use. You will see internal etched patterns, such as plaid or diamond-shaped patterns, which will affect the user's visual experience.

In view of this, the present invention provides a transparent conductive structure for a touch panel that is inconspicuous in graphics, and can be used as a structure of an upper or lower panel of a touch panel. The transparent conductive structure obtains the technical effect of making the etching pattern of the convex portion of the patterned transparent conductive layer inconspicuous by the arrangement of the plurality of light adjusting structures, thereby reducing or avoiding the user's use of the touch panel. The effect of the etching pattern on the visual experience.

One embodiment of the present invention provides a transparent conductive structure for a touch panel that is inconspicuous in graphics, comprising: a transparent substrate, a transparent conductive layer, and a plurality of light adjusting structures. The transparent conductive layer is patterned to form at least one surface of the transparent substrate, and the transparent conductive layer has a plurality of convex portions. Each of the plurality of light adjustment structures is disposed to a corresponding one of the plurality of raised portions.

Another embodiment of the present invention provides a transparent conductive structure for a touch panel that is inconspicuous in graphics, comprising: a transparent substrate, a transparent conductive layer, and a plurality of light adjusting structures. Each of the plurality of light adjustment structures is disposed between the corresponding at least two adjacent raised portions of the plurality of raised portions and covers at least a portion of the two adjacent raised portions.

In some implementations of the present invention, the plurality of light adjustment structures each include: a first refractive portion and a second refractive portion, wherein a refractive index of the first refractive portion is higher than a refractive index of the second refractive portion.

In some embodiments of the present invention, the transparent conductive layer may include components such as indium tin oxide (ITO), a nano composite, or a metal mesh.

In order to make the various aspects and the aspects of the present invention described above more readily apparent, the detailed description of the embodiments will be described in the accompanying drawings.

The embodiments of the transparent conductive structure for a touch panel according to the present invention will be described below with reference to the related drawings. For the sake of understanding, the same components in the following embodiments are denoted by the same reference numerals.

Please refer to FIG. 3, which shows a first embodiment of a transparent conductive structure for a touch panel. For example, at least one of the upper and lower plates of various touch panels such as the capacitive touch panel or the resistive touch panel shown in FIG. 1 can be realized based on the transparent conductive structure 1 of the embodiment. The transparent conductive structure 1 has a technical effect of making the etching pattern of the convex portion 130 of the patterned transparent conductive layer 13 inconspicuous by the arrangement of the plurality of light adjusting structures 12, thereby reducing or avoiding the user's The effect of the etched pattern on the visual experience when using the touch panel.

As shown in FIG. 3, the transparent conductive structure 1 includes a transparent substrate 10, a plurality of light-adjusting structures 12, and a transparent conductive layer 13. For the sake of exemplification, the transparent conductive structure 1 further includes the cladding layer 11 and the dielectric material 14, but it may vary depending on the needs of the various aspects of the transparent conductive structure 1, and is not limited thereto.

In FIG. 3, the transparent conductive layer 13 is patterned to form at least one surface of the transparent substrate 10, and the transparent conductive layer 13 has a plurality of convex portions 130. Each of the plurality of light adjustment structures 13 is disposed to a corresponding one of the plurality of raised portions 130. In FIG. 3, the raised portions 130 are disposed on the corresponding light adjustment structure 12. However, the arrangement thereof is not limited thereto, and any configuration that can make the etching pattern of the convex portion 130 of the patterned transparent conductive layer 13 inconspicuous (ie, reduce the saliency) can be regarded as the case. Embodiments; for example, some etched patterns may be selectively ignored without the light regulating structure being disposed, and for example, the upper and lower arrangement relationship may be changed.

In an embodiment of the transparent conductive structure 1, each of the plurality of light-modulating structures 12 has a dielectric having a refractive index of 1.70 to 2.50.

In another embodiment of the transparent conductive structure 1, for a convex portion of the plurality of convex portions 130, a portion of the transparent conductive structural body 1 having the convex portion and a portion without the convex portion At least the difference in light transmittance is less than a threshold value, so that the pattern of the convex portion of the transparent conductive layer 13 of the transparent conductive structure 1 is not conspicuous. For example, the difference in light transmittance between the portion having the convex portion and the portion having no such convex portion in the transparent conductive structure 1 satisfies the following relationship: 0≦∣T1-T0∣≦TH (Condition 1) Wherein T1 represents the light transmittance of the transparent conductive structure 1 having the convex portion, T0 represents the light transmittance of the transparent conductive structure 1 having no portion of the convex portion, TH represents the threshold value, and 0.5 ≦TH≦1.2.

Further, with the foregoing embodiment, the portion having the convex portion and the portion without the convex portion in the transparent conductive structural body 1 are for the color b value: 0 ≦∣ b1 - b0 ∣≦ 1.0 (Condition 2) B1 represents the color b value of the transparent conductive structural body 1 having the convex portion, and b0 represents the color b value of the transparent conductive structural body 1 having no such convex portion.

Referring to FIG. 3 again, in another embodiment of the transparent conductive structure 1, the plurality of light adjusting structures 12 each include: a first refractive portion 121 and a second refractive portion 122, and the refractive index of the first refractive portion 121 is higher than The refractive index of the second refractive portion 122. For example, the refractive index of the first refractive portion 121 is 1.70 to 2.50, and the film thickness thereof is in the range of 4 to 20 nm; the refractive index of the second refractive portion 122 is 1.30 to 1.60, and the film thickness is in the range of 20 to 50 nm.

For the transparent conductive structure 1 of the first embodiment, the plurality of light-regulating structures 12 include at least cerium oxide (SiO2), titanium oxide (TiO2) or tantalum pentoxide (Nb2O5). However, the embodiment thereof is not limited to this.

Further, in addition to the use of indium tin oxide (ITO) as the material of the transparent conductive layer 13 of the transparent conductive structure 1, the transparent conductive layer 13 can be formed by using any suitable component or combining different components, for example, having low electrical resistance. The composition of the rate and high light transmittance. For example, the transparent conductive layer 13 may comprise a nanocomposite, such as a carbon nanotube, nanosilver or other suitable composite material having a matrix of a resin, rubber, ceramic, and metal as a continuous phase. In another example, the transparent conductive layer 13 includes a metal mesh.

Referring to FIG. 4 and FIG. 5 together, a touch panel upper plate 190 and a lower plate 191 are respectively arranged with staggered etching patterns, which are etched on the upper plate 190 by using microelectromechanical process technology. Making a totem of the wire X1-Xm, making a totem of Y1-Yn on the lower plate 191, wherein the etching pattern can be made based on a diamond shape, and both m and n are positive integers greater than one; but the touch that can be applied by the creation The control panel is not limited to this. The upper plate 190 and the lower plate 191 are each fabricated based on the first embodiment. In this way, when the user views the touch panel implemented based on the embodiment of the present invention, the etching patterns of the upper plate 190 and the lower plate 191 are configured by a plurality of light adjusting structures 12, The etched pattern of the raised portion 130 of the patterned transparent conductive layer 13 becomes inconspicuous, thereby reducing or avoiding the influence of the user on the visual experience. In this way, the visual trace phenomenon (or optical saliency) is reduced.

Please refer to FIG. 6, which shows a second embodiment of a transparent conductive structure for a touch panel. For example, at least one of the upper and lower panels of the capacitive touch panel shown in FIG. 1 or the touch panel or the resistive touch panel of FIGS. 4 and 5 can be based on this embodiment. The transparent conductive structure 2 is realized. The transparent conductive structure 2 is configured such that the etched pattern of the raised portion 230 of the patterned transparent conductive layer 23 becomes inconspicuous by the arrangement of the plurality of light adjusting structures 22, thereby reducing or avoiding the user's visual experience. Impact.

As shown in FIG. 6, the transparent conductive structure 2 includes a transparent substrate 10, a plurality of light adjustment structures 22, and a transparent conductive layer 23. For the sake of exemplification, the transparent conductive structure 1 further includes the cladding layer 11 and the dielectric material 24, but it may vary depending on the needs of the various aspects of the transparent conductive structure 2, and is not limited thereto.

In FIG. 6, the transparent conductive layer 23 is patterned to form at least one surface of the transparent substrate 10, and the transparent conductive layer 23 has a plurality of convex portions 230. Each of the plurality of light adjustment structures 22 is disposed between at least two adjacent raised portions of the plurality of raised portions 230 and covers at least a portion of the two adjacent raised portions. In FIG. 6, a light-adjusting structure 22 is disposed in such a manner as to be filled between two adjacent convex portions 230; however, the configuration thereof is not limited thereto, as long as the patterned transparent conductive can be obtained. Any configuration in which the etched pattern of the raised portion 230 of the layer 23 becomes insignificant (ie, reduces significance) can be considered as an embodiment of the present invention; for example, some etched patterns can be selectively ignored without the light modulating structure being disposed. For example, the upper and lower configuration relationship is changed.

Further, the transparent conductive structure 2 of the present embodiment can also be realized by referring to each embodiment of the transparent conductive structure 1 of the first embodiment.

For example, referring to FIG. 6 , in an embodiment of the transparent conductive structure 2 , the plurality of light adjusting structures 22 each include a first refractive portion 221 and a second refractive portion 222 , and the first refractive portion 221 has a high refractive index. The refractive index of the second refractive portion 222. For example, the refractive index of the first refractive portion 221 is 1.70 to 2.50, and the film thickness thereof is in the range of 4 to 20 nm; the refractive index of the second refractive portion 222 is 1.30 to 1.60, and the film thickness is in the range of 20 to 50 nm.

Therefore, referring to various embodiments of the transparent conductive structure 1 of the first embodiment, the transparent conductive structure 2 of the second embodiment also has various implementations in which corresponding components, structures, parameters, materials or conditional expressions are used. It can be done in the same way as it is, so it will not be described again.

The transparent conductive structure as exemplified in the foregoing embodiment has a technical effect of making the etching pattern of the convex portion of the patterned transparent conductive layer inconspicuous by the arrangement of the plurality of light adjusting structures, thereby reducing or Avoid the influence of the etched pattern on the visual experience when the user uses the touch panel.

However, the above description is only for the embodiments of the present invention, and is not intended to limit the scope of the present invention, so that those skilled in the art having ordinary knowledge or equivalent or easy changes in the art. Equivalent changes and modifications made without departing from the spirit and scope of this creation shall be covered by the scope of this creation.

1, 2‧‧‧ Transparent Conductive Structure
10‧‧‧Substrate
11‧‧‧coating
12, 22‧‧‧Light adjustment structure
121, 221‧‧‧ First Refraction
122, 222‧‧‧second refraction
13, 23‧‧‧ Transparent conductive layer
130, 230‧‧‧The convex part of the transparent conductive layer
14, 24‧‧‧ dielectric layer
80‧‧‧Indium tin oxide glass
81‧‧‧ horizontal electrode column
82‧‧‧Vertical electrode column
83‧‧‧ hard shell
91‧‧‧Upper substrate
92‧‧‧Lower substrate
90‧‧‧Indium tin oxide
190‧‧‧Upper board
191‧‧‧ Lower board

FIG. 1 is a schematic diagram of a conventional touch panel. 2 is a schematic diagram of a conventional touch panel. Fig. 3 is a cross-sectional view showing a first embodiment of a transparent conductive structure for a touch panel in which the pattern of the creation is not conspicuous. FIG. 4 is a schematic diagram of an embodiment of a touch panel in which the created graphics are not conspicuous. FIG. 5 is a schematic cross-sectional view showing an embodiment of a touch panel in which the graphic of the creation is not conspicuous. Fig. 6 is a cross-sectional view showing a second embodiment of the transparent conductive structure for a touch panel in which the pattern of the creation is not conspicuous.

1‧‧‧Transparent Conductive Structure

10‧‧‧Substrate

11‧‧‧coating

12‧‧‧Light adjustment structure

121‧‧‧First Refraction

122‧‧‧Second Refraction

13‧‧‧Transparent conductive layer

130‧‧‧Protruding part of transparent conductive layer

14‧‧‧Dielectric layer

Claims (22)

A transparent conductive structure for a touch panel, comprising: a transparent substrate; a transparent conductive layer patterned to form at least one surface of the transparent substrate, the transparent conductive layer having a plurality of convex portions And a plurality of light adjustment structures, each of the plurality of light adjustment structures being disposed to a corresponding one of the plurality of protrusions. The transparent conductive structure according to claim 1, wherein each of the plurality of light adjusting structures has a dielectric having a refractive index of 1.70 to 2.50. The transparent conductive structure according to claim 1, wherein a portion of the transparent conductive structure having the convex portion and a portion having the convex portion are at least light-transmitting for one of the plurality of convex portions The difference in rate is less than a threshold value such that the pattern of the raised portion of the transparent conductive layer of the transparent conductive structure is not significant. The transparent conductive structure according to claim 3, wherein a difference in light transmittance between a portion having the convex portion and a portion having the convex portion in the transparent conductive structure satisfies the following relationship: 0≦∣T1 -T0∣≦TH, where T1 represents the light transmittance of the transparent conductive structure having the portion of the raised portion, T0 represents the light transmittance of the transparent conductive structure without the portion of the raised portion, and TH represents the light transmittance The threshold is ,, and 0.5≦TH≦1.2. The transparent conductive structure according to claim 4, wherein the portion having the convex portion and the portion having the convex portion in the transparent conductive structure have a color b value of 0≦∣b1-b0∣≦1.0, B1 represents the color b value of the transparent conductive structure having the portion of the convex portion, and b0 represents the color b value of the transparent conductive structure without the portion of the convex portion. The transparent conductive structure of claim 1, wherein the plurality of light adjustment structures each comprise: a first refractive portion; and a second refractive portion, the first refractive portion having a higher refractive index than the second refractive portion Refractive index. The transparent conductive structure according to claim 6, wherein the refractive index of the first refractive portion is 1.70 to 2.50, the film thickness of the first refractive portion is in the range of 4 to 20 nm, and the refractive index of the second refractive portion is 1.30~1.60, the film thickness of the second refractive portion is in the range of 20 to 50 nm. The transparent conductive structure according to any one of claims 1 to 7, wherein the plurality of light-regulating structures comprise at least cerium oxide (SiO ₂ ), titanium dioxide (TiO ₂ ) or bismuth pentoxide (Nb ₂ O). ₅ ). The transparent conductive structure according to any one of claims 1 to 7, wherein the transparent conductive layer comprises a nano composite. The transparent conductive structure according to claim 9, wherein the transparent conductive layer comprises nano silver. The transparent conductive structure according to any one of claims 1 to 7, wherein the transparent conductive layer comprises a metal mesh. A transparent conductive structure for a touch panel, comprising: a transparent substrate; a transparent conductive layer patterned to form at least one surface of the transparent substrate, the transparent conductive layer having a plurality of convex portions; and a plurality of And a light adjustment structure, wherein each of the plurality of light adjustment structures is disposed between the corresponding at least two adjacent protrusions of the plurality of protrusions and covers at least a portion of the two adjacent protrusions. The transparent conductive structure according to claim 12, wherein each of the plurality of light adjusting structures has a dielectric having a refractive index of 1.70 to 2.50. The transparent conductive structure according to claim 12, wherein for the convex portion of the plurality of convex portions, a portion of the transparent conductive structural body having the convex portion and a portion without the convex portion are at least light-transmitting The difference in rate is less than a threshold value such that the pattern of the raised portion of the transparent conductive layer of the transparent conductive structure is not significant. The transparent conductive structure according to claim 14, wherein the portion having the convex portion and the portion without the convex portion of the transparent conductive structure have at least a difference in light transmittance, and the following relationship is satisfied: 0≦∣T1- T0∣≦TH, where T1 represents the light transmittance of the transparent conductive structure having the portion of the convex portion, T0 represents the light transmittance of the transparent conductive structure without the portion of the convex portion, and TH represents the threshold Value, and 0.5 ≦ TH ≦ 1.2. The transparent conductive structure according to claim 15, wherein the portion having the convex portion and the portion having the convex portion in the transparent conductive structure have a color b value of 0≦∣b1-b0∣≦1.0, B1 represents the color b value of the transparent conductive structure having the portion of the convex portion, and b0 represents the color b value of the transparent conductive structure without the portion of the convex portion. The transparent conductive structure of claim 12, wherein the plurality of light adjustment structures each comprise: a first refractive portion; and a second refractive portion, the first refractive portion having a higher refractive index than the second refractive portion Refractive index. The transparent conductive structure according to claim 17, wherein the refractive index of the first refractive portion is 1.70 to 2.50, the film thickness of the first refractive portion is in the range of 4 to 20 nm, and the refractive index of the second refractive portion is 1.30~1.60, the film thickness of the second refractive portion is in the range of 20 to 50 nm. The transparent conductive structure according to any one of claims 12 to 18, wherein the plurality of light-regulating structures comprise at least cerium oxide (SiO ₂ ), titanium dioxide (TiO ₂ ) or bismuth pentoxide (Nb ₂ O). ₅ ). The transparent conductive structure according to any one of claims 12 to 18, wherein the transparent conductive layer comprises a nano composite. The transparent conductive structure of claim 20, wherein the transparent conductive layer comprises nano silver. The transparent conductive structure according to any one of claims 12 to 18, wherein the transparent conductive layer comprises a metal mesh.