CN101320107B - Touch display panel, color filter and manufacturing method thereof - Google Patents

Abstract

The invention discloses a touch display panel, a color filter and a manufacturing method thereof. The touch color filter includes a substrate, a black matrix, a color filter layer and a second electrode layer. The black matrix is configured on the substrate to define a plurality of sub-pixel regions. The black matrix includes a first electrode layer, and the first electrode layer has a plurality of openings corresponding to sub-pixel regions. The color filter layer includes a plurality of color filter units. The color filter units are respectively configured in the sub-pixel regions. The second electrode layer is disposed on the substrate, and the second electrode layer includes a plurality of sub-patterns, wherein the sub-patterns respectively correspond to sub-pixel regions. The invention further proposes a manufacturing method of the touch-sensitive color filter and a display panel using the touch-sensitive color filter.

Description

Touch display panel, color filter and manufacturing method thereof

technical field

The present invention relates to a display panel, a color filter and a manufacturing method thereof, and in particular to a touch-sensitive display panel, a touch-sensitive color filter and a manufacturing method thereof.

Background technique

In recent years, with the rapid development and application of information technology, wireless mobile communication and information home appliances, in order to achieve more convenience, smaller volume and more humanization, many information products have been replaced by traditional input devices such as keyboard or mouse, Change to using a touch panel (Touch Panel) as an input device, among which the touch display device is the most popular product today.

Existing touch panels can be roughly classified into capacitive, resistive, and photosensitive types, among which capacitive touch panels are the mainstream products. In addition, if classified according to the structural composition, the touch panel can be divided into two categories: the added type and the integrated type. Such as the process of color filter) integration, and help to reduce the thickness of the overall product, in line with the trend of thinner products.

The structure of the current internal capacitive touch panel can be further divided into a single-layer design on the same side of the glass substrate and a double-layer design on different sides of the glass substrate. Although the double-layer design is easier to manufacture, it has limitations in thickness and resolution. Although the structure of the single-layer design is simpler than that of the double-layer design, it has the problems of complex process and resolution cannot be improved.

For example, the existing single-layer touch color filter usually includes a substrate, a bottom electrode layer, a first dielectric layer, a color filter layer, a second dielectric layer and a shared electrode layer. The lower electrode layer is configured on the substrate as a black matrix to define a plurality of sub-pixel regions. The lower electrode layer usually includes a plurality of X electrodes and Y electrodes arranged in an array, wherein the X electrodes are connected to each other to form a plurality of X electrode series. The first dielectric layer is disposed on the substrate to cover the X electrodes and the Y electrodes. In addition, a plurality of bridging lines are disposed on the first dielectric layer, which are connected in series with the lower Y electrodes through the through holes in the first dielectric layer, so as to form a plurality of Y electrode series interlaced with the X electrode series. The color filter layer includes a plurality of color filter units respectively disposed in the sub-pixel region P1. The second dielectric layer covers the color filter layer and the bridge lines, and the shared electrode layer is disposed on the second dielectric layer.

Based on the above, the existing touch-sensitive color filter needs to form the through hole in the first dielectric layer through the photomask process, so the process is relatively complicated, and the process yield cannot be guaranteed. In addition, because the X electrodes and Y electrodes of the touch-sensitive color filter are usually a coplanar single-layer design (compared to the non-coplanar X electrodes and Y electrodes, called double layers), the configuration and number of electrodes are easily limited. , so that the touch resolution cannot be further improved.

In other words, most of the existing touch panel manufacturing has the problems of complex process and limited resolution. Therefore, how to improve the process of touch panel and further enhance the touch resolution is an urgent need for touch panel manufacturing technology. a major topic.

Contents of the invention

The invention provides a touch-sensitive color filter, which has better touch resolution and better touch sensitivity.

The present invention further provides a method for manufacturing the above-mentioned touch-sensitive color filter, which has relatively simplified process steps and better process yield.

The present invention further provides a touch-sensitive display panel, which uses the above-mentioned touch-sensitive color filter to provide better touch resolution and touch sensitivity.

The invention provides a touch-sensitive color filter, which includes a substrate, a black matrix, a color filter layer and a second electrode layer. The black matrix is configured on the substrate to define a plurality of sub-pixel regions. In addition, the black matrix includes a first electrode layer, and the first electrode layer has a plurality of openings corresponding to the sub-pixel regions. The color filter layer includes a plurality of color filter units, wherein the color filter units are respectively arranged in the sub-pixel area. The second electrode layer is disposed on the substrate, and the second electrode layer includes a plurality of sub-patterns, wherein the sub-patterns respectively correspond to sub-pixel regions.

In an embodiment of the present invention, the above-mentioned sub-patterns of the second electrode layer are respectively located on the color filter units of the color filter layer.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter further includes a first dielectric layer. The first dielectric layer covers the color filter layer and the black matrix, and the second electrode layer is located on the first dielectric layer.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter further includes a second dielectric layer. The second dielectric layer is arranged between the black matrix and the substrate, and the second electrode layer is located between the second dielectric layer and the substrate.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter further includes a third dielectric layer. The third dielectric layer covers the black matrix, the color filter layer and the second electrode layer.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter further includes a shared electrode layer. The shared electrode layer is configured on the third dielectric layer.

In an embodiment of the present invention, the above-mentioned first electrode layer is made of opaque metal.

In an embodiment of the present invention, the above-mentioned black matrix further includes a black resin layer. The black resin layer overlaps with the first electrode layer.

In an embodiment of the present invention, the material of the above-mentioned second electrode layer is a transparent conductive material.

In an embodiment of the present invention, the above-mentioned black matrix further includes an anti-reflection layer. The anti-reflection layer is located between the first electrode layer and the substrate.

In an embodiment of the present invention, the above-mentioned first electrode layer is an X electrode. The first electrode layer includes a plurality of independent sensing blocks, wherein each sensing block corresponds to a plurality of sub-pixel regions.

In an embodiment of the present invention, the above-mentioned second electrode layer is a Y electrode. The sub-patterns of the second electrode layer are divided into a plurality of groups corresponding to the sensing blocks, and the sub-patterns of each group are connected in series.

The invention further provides a method for manufacturing a touch-sensitive color filter. First, a substrate is provided. Next, a black matrix is formed on the substrate to define a plurality of sub-pixel regions, wherein the black matrix is formed by first forming a first electrode layer, and forming a plurality of openings corresponding to the sub-pixel regions in the first electrode layer. Then, a plurality of color filter units are formed in the sub-pixel area. Next, a second electrode layer is formed on the substrate, wherein the second electrode layer includes a plurality of sub-patterns, and the sub-patterns respectively correspond to the sub-pixel regions.

In an embodiment of the present invention, the above-mentioned manufacturing method of the touch-sensitive color filter may firstly form a black matrix on the substrate. Next, after the color filter unit is formed, the sub-pattern of the second electrode layer is formed on the color filter unit.

In an embodiment of the present invention, the above-mentioned manufacturing method of the touch-sensitive color filter may also be after forming the black matrix and the color filter unit. Next, a first dielectric layer is formed to cover the color filter unit and the black matrix. Then, a second electrode layer is formed on the first dielectric layer.

In an embodiment of the present invention, the above-mentioned manufacturing method of the touch-sensitive color filter may further include forming the second electrode layer on the substrate first. After forming the second electrode layer, next, a second dielectric layer is formed to cover the second electrode layer. Then, a black matrix and a color filter unit are formed.

In an embodiment of the present invention, the above-mentioned manufacturing method of the color filter further includes forming a third dielectric layer to cover the black matrix, the color filter unit and the second electrode layer.

In an embodiment of the present invention, the above-mentioned manufacturing method of the color filter further includes forming a common electrode layer on the third dielectric layer.

In an embodiment of the present invention, the above-mentioned method for forming a black matrix further includes forming a black resin layer to overlap with the first electrode layer.

In an embodiment of the present invention, the above-mentioned method for forming a black matrix further includes forming an anti-reflection layer between the first electrode layer and the substrate.

The present invention further provides a touch display panel, which includes a color filter, a display array substrate and a liquid crystal layer. The color filter includes a black matrix, a color filter layer and a second electrode layer. The black matrix is configured on the substrate to define a plurality of sub-pixel regions. The black matrix includes a first electrode layer, and the first electrode layer has a plurality of openings corresponding to sub-pixel regions. The color filter layer includes a plurality of color filter units. The color filter units are respectively configured in the sub-pixel regions. The second electrode layer is configured on the substrate. The second electrode layer includes a plurality of sub-patterns, wherein the sub-patterns respectively correspond to the sub-pixel regions. The liquid crystal layer is arranged between the color filter and the display array substrate.

To sum up, the present invention integrates the existing color filter process, and proposes a color filter with simplified process steps and high process yield. In addition, the present invention forms a single sensing electrode corresponding to each sub-pixel region, which can be an X electrode or a Y electrode, so that the sensing resolution can be effectively improved.

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

Description of drawings

1 is a schematic diagram of a local sensing block of a touch-sensitive color filter of the present invention;

1A and FIG. 1B are schematic diagrams of X electrodes and Y electrodes of the sensing unit shown in FIG. 1 ;

2A is a schematic top view of a touch-sensitive color filter according to a first embodiment of the present invention;

Fig. 2B is a schematic cross-sectional view of the touch-sensitive color filter shown along the BB' section line of Fig. 2A;

3A is a schematic top view of a touch-sensitive color filter according to a second embodiment of the present invention;

3B is a schematic cross-sectional view of the touch-sensitive color filter shown along line CC' in FIG. 3A;

4A is a schematic top view of a touch-sensitive color filter according to a third embodiment of the present invention;

Fig. 4B is a schematic cross-sectional view of the touch-sensitive color filter shown along the DD' line in Fig. 4A;

5 is a schematic top view of a touch-sensitive color filter according to a fourth embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a touch display panel according to a fifth embodiment of the present invention.

[Description of main component symbols]

100, 530: sensing block

110: X electrode

120: Y electrode

130: Color filter layer

200, 300, 400, 500: touch color filter

210: Substrate

220: Black Matrix

230: Color filter layer

232: Color filter unit

240: second electrode layer

242: Subpattern

250: first electrode layer

252: opening

260: anti-reflection layer

270: third dielectric layer

280: shared electrode layer

310: first dielectric layer

410: second dielectric layer

510a, 510b: Sensing pads

520: Wire

600: Touch Display Panel

610: color filter

620: display array substrate

630: liquid crystal layer

P1: sub-pixel area

BB', CC', DD': broken line

Detailed ways

FIG. 1 is a schematic diagram of a partial sensing block of the touch-sensitive color filter of the present invention, and FIG. 1A and FIG. 1B are schematic diagrams of X electrodes and Y electrodes of the sensing unit shown in FIG. 1 . Please refer to FIG. 1, FIG. 1A and FIG. 1B at the same time. The sensing block 100 includes an X electrode 110, a Y electrode 120 and a color filter layer, wherein the X electrode 110 is, for example, indium tin oxide, indium zinc oxide, indium tin zinc oxide, hafnium oxide, zinc oxide, aluminum oxide, aluminum tin oxide, aluminum zinc oxide, cadmium tin oxide, cadmium zinc oxide and the like, and the Y electrode 120 is made of, for example, chromium, molybdenum, aluminum, Titanium, its oxide, black resin, or black matrix of its combination.

In the sensing block 100 , the color filter layer 130 is disposed on the Y electrode 120 , and the X electrode 110 is disposed on the color filter layer 130 . However, according to the needs and designs of users, the film layers of the X electrodes 110 and the Y electrodes 120 can also be replaced with each other to form another sensing area. In addition, different film layer configurations between the X electrodes 110 and the Y electrodes 120 (for example, Y electrodes-color filter layer-dielectric layer-X electrodes, etc.) can also form various forms of sensing regions. In this way, different types of sensing blocks also form various types of touch-sensitive color filters. Therefore, several embodiments are given below for illustration.

first embodiment

2A is a schematic top view of the touch-sensitive color filter according to the first embodiment of the present invention, and FIG. 2B is a schematic cross-sectional view of the touch-sensitive color filter drawn along the line BB' in FIG. 2A . For clarity, FIG. 2A mainly shows the structure of the sensing electrodes, while omitting other upper layers such as the third dielectric layer and the shared electrode layer. However, FIG. 2B depicts the connection relationship between the substrate and each film layer in detail.

The touch-sensitive color filter 200 of this embodiment includes a substrate 210, a black matrix 220, a color filter layer 230, and a second electrode layer 240, wherein the connection relationship of each component of the touch-sensitive color filter 200 is shown in FIG. 2A and Figure 2B depicts.

The connection relationship among the components of the touch-sensitive color filter 200 will be described in detail below.

In this embodiment, the material of the substrate 210 includes inorganic transparent materials (such as: glass, quartz, or other materials), organic transparent materials (such as: polyolefins, polyols, polyalcohols, polyesters, rubbers, etc.) , thermoplastic polymers, thermosetting polymers, polyaromatic hydrocarbons, polymethylmethacrylates, polycarbonates, or others, or derivatives of the above, or combinations of the above), inorganic opaque materials (such as: silicon wafer, ceramics, or others, or a combination of the above), or a combination of the above. The substrate 210 of this embodiment is used as a base in the touch-sensitive color filter 200 , and glass, an inorganic transparent material, is used as an example, but not limited thereto.

In addition, the black matrix 220 is disposed on the substrate 210 to define a plurality of sub-pixel regions P1. The black matrix 220 in this embodiment includes a first electrode layer 250, and the first electrode layer 250 has a plurality of openings 252 corresponding to the sub-pixel region P1, and the material of the first electrode layer 250 is an opaque metal, such as Chromium, molybdenum, aluminum, titanium and the like. However, in order to make the display panel with the touch-sensitive color filter 200 have a better display image, therefore, the black matrix 220 further includes an anti-reflection layer 260 . The anti-reflection layer 260 is located between the first electrode layer 250 and the substrate 210. When the first electrode layer 250 is made of chromium, the material of the anti-reflection layer 260 is, for example, chromium oxynitride (CrOxNy) or chromium oxide (CrOx). material, but not limited to this. In other embodiments, when the material of the first electrode layer 250 is other metal materials mentioned above, the anti-reflection layer 260 is generally a black resin layer, but not limited thereto. The black resin layer overlaps with the first electrode layer 250 and can be located above or below the first electrode layer 250 .

In addition, the color filter layer 230 of the touch-sensitive color filter 200 includes a plurality of color filter units 232, wherein the color filter units 232 are respectively disposed in the sub-pixel region P1. The color of the color filter unit 232 is, for example, red, green, blue or a combination thereof. In this embodiment, red, green and blue are used as examples, but not limited thereto.

In this embodiment, the second electrode layer 240 is disposed on the substrate 210, and the second electrode layer 240 includes a plurality of sub-patterns 242, wherein the sub-patterns 242 respectively correspond to the sub-pixel regions P1. In more detail, the sub-patterns 242 of the second electrode layer 240 are respectively located on the color filter units 232 of the color filter layer 230 , as shown in FIG. 2B . In addition, the material of the second electrode layer 240 is a transparent conductive substance, such as indium tin oxide, indium zinc oxide, indium tin zinc oxide, hafnium oxide, zinc oxide, aluminum oxide, aluminum tin oxide, aluminum zinc oxide substances, cadmium tin oxide, cadmium zinc oxide, or a combination of the above, but not limited thereto.

In addition, it is worth mentioning that in this embodiment, a plurality of sub-patterns 242 are connected in series to form the aforementioned X electrodes 110, while the black matrix 220 is, for example, the aforementioned Y electrodes 120. In other words, the second electrode layer 240 and The first electrode layer 250 constitutes a plurality of sensing blocks 100 as described above, please compare what is shown in FIG. 1 and FIG. 2A .

In addition, the touch-sensitive color filter 200 further includes a third dielectric layer 270 . The third dielectric layer 270 is the color filter layer 230 and the second electrode layer 240 . The third dielectric layer 270 is, for example, a protection layer or a planarization layer. The material of the third dielectric layer 270 is an organic material, an inorganic material or a combination thereof. Organic materials such as photoresist, benzocyclobutene, cycloalkene, polyimide, polyamide, polyester, polyalcohol, polyethylene oxide, polyphenylene, resin, poly Ethers, polyketones, or other materials, or a combination of the above. The inorganic material is, for example, silicon oxide, silicon nitride, silicon oxynitride, other suitable materials or combinations thereof, but is not limited thereto.

The touch-sensitive color filter 200 of this embodiment further includes a common electrode layer 280 . The shared electrode layer 280 is disposed on the third dielectric layer 270, and its material is, for example, indium tin oxide, indium zinc oxide, indium tin zinc oxide, hafnium oxide, zinc oxide, aluminum oxide, aluminum tin oxide, aluminum zinc oxide, etc. oxide, cadmium tin oxide, cadmium zinc oxide or a combination thereof, but not limited thereto.

It is worth mentioning that since the first electrode layer 250 and the second electrode layer 240 are in different film layers, and the plurality of sub-patterns 242 of the second electrode 240 respectively correspond to the plurality of openings 252 of the first electrode layer 250, and these openings 252 There are respectively corresponding to the sub-pixel area P1. Therefore, technically, one sub-pattern 242 can be used as one sensing unit by means of a proper wire drawing method. In other words, this structural arrangement helps to greatly improve the touch resolution and touch sensitivity when the touch color filter 200 is applied to a touch display panel.

In addition, please refer to FIG. 2A and FIG. 2B at the same time, the manufacturing method of the above-mentioned touch-sensitive color filter 200 is as follows. Firstly, a substrate 210 is provided, wherein the material of the substrate 210 is as mentioned above, and will not be repeated here.

Next, a black matrix 220 is formed on the substrate 210 to define a plurality of sub-pixel regions P1, as shown in FIG. 2B . In detail, the method of forming the black matrix 220 includes forming the first electrode layer 250 first, and forming a plurality of openings 252 corresponding to the sub-pixel region P1 in the first electrode layer 250 . In terms of process implementation, a first electrode material layer (not shown) can be formed on the substrate 210 first, and the first electrode material layer can be formed by sputtering or evaporation. Or metal organic chemical vapor deposition (MOCVD), or other suitable processes, the above is just an example, not intended to limit the present invention. Next, the first electrode material layer is patterned using a conventional photolithography and etching process (PEP) to form a first electrode layer 250 having a plurality of openings 252 corresponding to the sub-pixel region P1. The above-mentioned method of forming the first electrode layer 250 is only an example, and other suitable process methods can also be used, such as: screen printing, inkjet, laser stripping, other suitable methods or combinations of the above, the present invention This is not the limit.

However, in other embodiments, when the material of the first electrode layer 250 is a metal material such as molybdenum, aluminum, titanium, etc., the method of forming the black matrix 220 includes forming the black matrix 220 in addition to forming the first electrode layer 250 described above. A resin layer (not shown), wherein the black resin layer overlaps with the first electrode layer 250 . Specifically, in this embodiment, the black resin layer can be formed on the substrate 210 first, and then, the first electrode layer 250 is formed on the black resin layer, so that the first electrode layer 250 and the black resin layer overlap, or The first electrode layer 250 is formed first, and then the black resin layer is formed on the first electrode layer 250 . It should be noted that the pattern for forming the black resin layer must be the same as that of the aforementioned first electrode layer 250 . In addition, the method of forming the black resin layer is, for example, to form the black resin layer under the first electrode layer 250 by means of lithography process, printing process, inkjet process or coating process.

It is worth mentioning that sometimes in order to make the display panel with the touch-sensitive color filter 200 have a better display image, therefore, the black matrix 220 may further include an anti-reflection layer 260 . In detail, in this embodiment, when the material of the first electrode layer 250 is chrome, the step of forming the black matrix 220 further includes forming an anti-reflection layer 260, wherein the anti-reflection layer 260 is located between the first electrode layer 250 and the substrate 210 between. In addition, the method of forming the anti-reflection layer 260 is, for example, to form an anti-reflection material layer (not shown) first. Next, the anti-reflection material layer is patterned by a lithographic etching process to form an anti-reflection layer 260 on the substrate 210 , as shown in FIG. 2B . It is worth mentioning that the material of the anti-reflection layer 260 is, for example, chromium oxynitride or chromium oxide.

In other embodiments, for example, when the first electrode layer 250 is made of metal such as molybdenum, aluminum, or titanium, the anti-reflection layer 260 may be the above-mentioned black resin layer.

Then, a plurality of color filter units 232 are formed in the sub-pixel region P1, wherein the method of forming the color filter units 232 is, for example, using a lithography process, a printing process, an inkjet process, or a coating process to combine the color filters The optical material is formed in the sub-pixel region P1 to further form the color filter unit 232 .

Next, a second electrode layer 240 is formed on the substrate 210 , wherein the second electrode layer 240 includes a plurality of sub-patterns 242 . The sub-patterns 242 respectively correspond to the sub-pixel regions P1. In detail, the method of forming the second electrode layer 240 with the sub-pattern 242 may be preceded by completely forming a second electrode material layer (not shown) on the substrate 210 after the above steps are completed. Next, the second electrode material layer is patterned by lithography to form the second electrode layer 240 with sub-patterns 242 . Of course, the above is only an example, and other suitable process methods can also be used to form the second electrode layer 240 with the sub-pattern 242, such as: screen printing, inkjet, laser stripping, other suitable methods or the above-mentioned methods. combination, the present invention is not limited thereto.

Then, a third dielectric layer 270 is formed on the substrate 210 after the above steps, wherein the third dielectric layer 270 covers the black matrix 220 , the color filter unit 232 and the second electrode layer 240 . In detail, the method of forming the third dielectric layer 270 on the substrate 210 is, for example, chemical vapor deposition or other suitable processes, such as screen printing, coating, inkjet, energy source treatment, and the like.

Next, a common electrode layer 280 is formed on the third dielectric layer 270 of the substrate 210 after the above steps. In detail, the method of forming the common electrode layer 280 is, for example, sputtering or evaporation. Of course, the above-mentioned method of forming the shared electrode layer 280 is just an example, and other suitable methods and processes may also be used, such as screen printing, coating, inkjet, energy source treatment, and the like. The material of the shared electrode layer 280 is the same as mentioned above, and will not be repeated here. So far, the fabrication of the touch-sensitive color filter 200 has been completed.

To sum up, the manufacturing method of the touch-sensitive color filter 200 of this embodiment can be summed up as follows: first, form the black matrix 220 on the substrate 210; then, form the color filter unit 232 on the black matrix 220; After the color filter unit 232 is formed, the sub-pattern 242 of the second electrode layer 240 is formed on the color filter unit 232 , and the detailed manufacturing method has been mentioned above.

Specifically, the color filter unit 232 of the touch-sensitive color filter 200 of this embodiment is disposed between the first electrode layer 250 and the second electrode layer 240, so that the color filter unit 232 serves as the first electrode layer 250 The insulation layer between the second electrode layer 240 and the second electrode layer 240 can reduce the number of process steps in the prior art. In addition, since the first electrode layer 250 and the second electrode layer 240 are designed in different film layers, and the plurality of sub-patterns 242 of the second electrode layer 240 respectively correspond to the openings 252 of the first electrode layer 250 corresponding to the sub-pixel region P1. Therefore, technically, the touch-sensitive color filter 200 can design a sub-pattern 252 as a sensing unit, that is, use a sub-pixel as a sensing unit, thereby improving the performance of the touch-sensitive color filter 200. Touch resolution and touch sensitivity. Of course, in other embodiments, a plurality of sub-patterns 252 may also be used as a group of sensing units, which are designed according to user requirements, and the present invention is not limited thereto.

second embodiment

3A is a schematic top view of a touch-sensitive color filter according to a second embodiment of the present invention, and FIG. 3B is a schematic cross-sectional view of the touch-sensitive color filter drawn along line CC' in FIG. 3A . For clarity, FIG. 3A mainly shows the structure of the sensing electrodes, while omitting other layers such as the first dielectric layer, the third dielectric layer, and the shared electrode layer. FIG. 3B depicts the connection relationship between the substrate and each film layer in detail.

Please refer to FIG. 2A , 2B, 3A and FIG. 3B at the same time. The structure of the touch-sensitive color filter 300 is similar to that of the touch-sensitive color filter 200 , and the similarities will not be repeated here. The only difference between the two is that the touch-sensitive color filter 300 further includes a first dielectric layer 310, wherein the first dielectric layer 310 covers the color filter layer 230 and the black matrix 220, and the second electrode layer 240 is located on the second electrode layer. On a dielectric layer 310, as shown in FIG. 3B.

In detail, the touch-sensitive color filter 200 different from the previous embodiment uses the color filter layer 230 as an insulating layer between the first electrode layer 250 and the second electrode layer 240 . The touch-sensitive color filter 300 of this embodiment uses the first dielectric layer 310 and the color filter layer 230 as an insulating layer between the first electrode layer 250 and the second electrode layer 240 . Further, since the first dielectric layer 310 covers the color filter layer 230 and the black matrix 220 , in practice, the first dielectric layer 310 can protect the color filter layer 230 from contamination or damage. In addition, the first dielectric layer 310 can also protect the short circuit caused by the connection between the second electrode layer 240 and the first electrode layer 250 due to process errors.

In addition, since the touch-sensitive color filter 300 is similar in structure to the touch-sensitive color filter 200 , the main difference between them is that the touch-sensitive color filter 300 further includes a first dielectric layer 310 . In other words, the manufacturing method of the touch-sensitive color filter 300 can refer to the manufacturing method of the touch-sensitive color filter 200 , and the process of the same film layer will not be repeated below. It should be noted and adjusted that after forming the black matrix 220 and the color filter unit 232 on the substrate 210 respectively, then, the first dielectric layer 310 is formed on the substrate 210 after the above steps to cover the first dielectric layer 310. The filter unit 232 and the black matrix 220, wherein, the method of forming the first dielectric layer 310 is, for example, chemical vapor deposition or other suitable processes, such as: screen printing, coating, inkjet, energy source processing etc. Then, the second electrode layer 240 as described in the previous embodiment is formed on the first dielectric layer 310 . Next, a third dielectric layer 270 is formed on the second electrode layer 240 and the first dielectric layer 310 , and a shared electrode layer 280 is formed on the third dielectric layer 270 . So far, the fabrication of the touch-sensitive color filter 300 is completed.

In this embodiment, the touch-sensitive color filter 300 has the advantages of the touch-sensitive color filter 200 . Moreover, since the touch-sensitive color filter 300 is configured with the first dielectric layer 310 , the color filter layer 230 is protected from being polluted or damaged. In addition, the first dielectric layer 310 also prevents the short circuit caused by the connection between the second electrode layer 240 and the first electrode layer 250 due to process errors.

third embodiment

FIG. 4A is a schematic top view of a touch-sensitive color filter according to a third embodiment of the present invention, and FIG. 4B is a schematic cross-sectional view of the touch-sensitive color filter drawn along line DD' in FIG. 4A . For clarity, FIG. 4A mainly shows the structure of the sensing electrodes, while omitting other layers such as the second dielectric layer, the third dielectric layer, and the shared electrode layer. FIG. 4B depicts the connection relationship between the substrate and each film layer in detail.

Please refer to FIG. 4A and FIG. 4B at the same time. The touch-sensitive color filter 400 of this embodiment is formed by adjusting the film layer order of the touch-sensitive color filter 200 . Therefore, the same components are marked with the same symbols. In addition, the touch-sensitive color filter 400 further includes a second dielectric layer 410 . The second dielectric layer 410 is disposed between the black matrix 220 and the substrate 210 , and the second electrode layer 240 is disposed between the second dielectric layer 250 and the substrate 210 .

The relationship between the components of the touch-sensitive color filter 400 will be described in detail below.

In the touch-sensitive color filter 400 , the second electrode layer 240 is disposed on the substrate 210 . The second dielectric layer 410 is disposed on the second electrode layer 240 such that the second electrode layer 240 is located between the second dielectric layer 410 and the substrate 210 . In addition, the black matrix 220 is disposed on the second dielectric layer 410 to define a plurality of sub-pixel regions P1. The black matrix 220 includes a first electrode layer 250, and the first electrode layer 250 has a plurality of openings 252 corresponding to the sub-pixel region P1. The color filter layer 230 includes a plurality of color filter units 232, wherein the color filter units 232 are respectively disposed in the sub-pixel region P1. The third dielectric layer 270 covers the black matrix 220 and the color filter layer 230 . The shared electrode layer 280 is disposed on the third dielectric layer 270 .

It should be noted that the materials of the substrate 210, the black matrix 220, the color filter layer 230, the first electrode layer 250, the second electrode layer 240, the third dielectric layer 270 and the shared electrode layer 280 are the same as those in the first embodiment. mentioned in , and will not be repeated here. The material of the second dielectric layer 410 is an organic material, an inorganic material or a combination thereof. Organic materials such as photoresist, benzocyclobutene, cycloalkene, polyimide, polyamide, polyester, polyalcohol, polyethylene oxide, polyphenylene, resin, poly Ethers, polyketones, or other materials, or a combination of the above. The inorganic material is, for example, silicon oxide, silicon nitride, silicon oxynitride, other suitable materials or combinations thereof, but is not limited thereto.

In addition, different from the above-mentioned touch-sensitive color filters 200 and 300, the color filter layer 230, or the color filter layer 230 and the first dielectric layer 310 are used as the gap between the first electrode layer 250 and the second electrode layer 240. insulation layer. The touch-sensitive color filter 400 of this embodiment uses the second dielectric layer 410 as an insulating layer between the first electrode layer 250 and the second electrode layer 240 . Further, since the second dielectric layer is directly used as the insulating layer between the first electrode layer and the second electrode layer, the capacitance value between the two electrode layers 240 and 250 is designed to be comparable to that without the color filter layer 230 And more precise. That is to say, in addition to the advantages of the touch-sensitive color filters 200 and 300 , the touch-sensitive color filter 400 has the advantage that the capacitance value is relatively easy to design.

In addition, please refer to FIG. 4A and FIG. 4B at the same time, the manufacturing method of the above-mentioned touch-sensitive color filter 400 is as follows. First, a substrate 210 is provided. Next, a second electrode layer 240 is formed on the substrate 210 . Then, a second dielectric layer 410 is formed, so that the second dielectric layer 410 covers the second electrode layer, wherein, the method of forming the second dielectric layer 410 is, for example, chemical vapor deposition or other suitable processes, Such as: screen printing, coating, inkjet, energy source processing, etc. Then, the black matrix 220 and the color filter unit 232 are successively formed on the substrate 210 . Next, as in the previous embodiment, the third dielectric layer 270 is formed on the black matrix 220 and the color filter unit 232 , and the shared electrode layer 280 is formed on the third dielectric layer 270 . So far, the fabrication of the touch-sensitive color filter 400 is completed. Wherein, the above-mentioned method of forming each film layer is as described in the previous embodiment, and will not be repeated here.

Fourth embodiment

FIG. 5 is a schematic partial top view of a touch-sensitive color filter according to a fourth embodiment of the present invention. For convenience of illustration, FIG. 5 only shows a part of the sensing block and the sensing pads electrically connected thereto. Please refer to FIG. 5 , the touch-sensitive color filter 500 of this embodiment may be one of the above-mentioned touch-sensitive color filters 200 , 300 , and 400 . In addition, the touch-sensitive color filter 500 further includes a plurality of sensing pads 510 a, 510 b and a plurality of wires 520 . The sensing pad 510 a is electrically connected to the first electrode layer 250 through the wire 520 , and the sensing pad 510 b is electrically connected to the second electrode layer 240 through the wire 520 .

In this embodiment, the first electrode layer 250 is defined as an X electrode. The first electrode layer 250 includes a plurality of independent sensing blocks 530, wherein each sensing block 530 corresponds to a plurality of sub-pixel regions P1, and each sensing block 530 is electrically connected to the sensing pad by wires 510a. In addition, the second electrode layer 240 is defined as a Y electrode. The sub-patterns 242 of the second electrode layer 240 are divided into a plurality of groups corresponding to the sensing area 530, and the sub-patterns 242 of each group are connected in series by wires 520, and the wires connected in series are electrically connected to The sensing pad 510b is as shown in FIG. 5 .

In detail, when the touch-sensitive color filter 500 is applied to the display panel, the user touches the sensing block 530 , which will make the gap between the sub-pattern 242 corresponding to the sensing block 530 and the sensing block 530 The equivalent capacitance value of the pads is changed, and then the changed voltage signal or current signal is transmitted to the sensing pads 510b and 510a respectively through the wire 520, and through the internal circuit design, the display panel displays the area touched by the user.

It is worth noting that in the touch-sensitive color filter 500 shown in FIG. 5 , the number of sub-pixel regions P1 corresponding to each sensing block 530 is a group of 6, and each sensing region The number of sub-patterns 242 corresponding to the block 530 is also 6 as a group. In other words, the touch-sensitive color filter 500 of this embodiment uses six sub-pixel regions P1 as a sensing unit. However, in other embodiments, the number of sub-pixel regions P1 corresponding to each sensing block 530 may be one group. In other words, the touch-sensitive color filter 500 can use the above-mentioned design of the wire 520 and the pattern design of the first electrode layer 250 and the second electrode layer 240 to use one sub-pixel region P1 as a sensing unit. . The above is just an example, and the present invention does not limit several sub-pixel regions P1 to be a sensing unit.

fifth embodiment

FIG. 6 is a schematic cross-sectional view of a touch display panel according to a fifth embodiment of the present invention. The touch display panel 600 of this embodiment includes a color filter 610 , a display array substrate 620 and a liquid crystal layer 630 . The liquid crystal layer 630 is disposed between the color filter 610 and the display array substrate 620 .

Specifically, the color filter 610 includes one of the touch-sensitive color filters 200 , 300 , 400 , and 500 as described in the above-mentioned embodiments. Since the color filter 610 has higher touch resolution, better operation sensitivity and simpler manufacturing steps, the touch-sensitive display panel 600 also has the above-mentioned advantages.

In addition, the display array substrate 620 is, for example, an active component array substrate, and an active layer (not shown) is formed on the display array substrate 620. The active layer has a plurality of scanning lines (not shown), a plurality of data lines (not shown). shown), a plurality of thin film transistors (not shown) and a plurality of pixel electrodes (not shown), wherein the scan lines and data lines are arranged alternately, the thin film transistors are electrically connected to the corresponding scan lines and data lines, and the pixel electrodes and The corresponding thin film transistors are electrically connected. Of course, the display array substrate 620 can also be changed accordingly for different display modes of the display panel 600, for example, a transmissive display panel, a semi-transmissive display panel, a reflective display panel, and color filters on the active layer (color filter on array) display panel, vertical alignment (vertical alignment, VA) display panel, horizontal switching (in plane switch, IPS) display panel, multi-domain vertical alignment (multi-domain vertical alignment, MVA) display panel, Twisted nematic (twist nematic, TN) display panel, super twisted nematic (super twist nematic, STN) display panel, patterned vertical alignment (patterned-silt vertical alignment, PVA) display panel, super patterned vertical alignment ( super patterned-silt vertical alignment (S-PVA) display panel, advanced large viewing angle (advance super view, ASV) display panel, fringe field switching (FFS) display panel, continuous pinwheel alignment , CPA) display panel, axially symmetrically aligned micro-cell mode (ASM) display panel, optical compensation banded (OCB) display panel, super horizontal switching (super in plane switching, S -IPS) display panel, advanced super in plane switching (AS-IPS) display panel, ultra-fringe field switching (UFFS) display panel, polymer stabilized alignment display panel, A dual-view display panel, a triple-view display panel, a three-dimensional display panel or other display panels, or a combination thereof.

In addition, the type of liquid crystal molecules of the liquid crystal layer 630 will also vary with the above-mentioned display panels, and those skilled in the art should know the materials of the liquid crystal molecules of the liquid crystal layer 630 , which will not be repeated here.

To sum up, the touch-sensitive color filter of the present invention has at least the following advantages. First, the color filter unit is used as an insulating layer between the first electrode layer and the second electrode layer to reduce process steps and increase process yield. Alternatively, a dielectric layer is covered on the color filter layer and used as an insulating layer between the first electrode layer and the second electrode layer, so as to prevent the color filter layer from being polluted and prevent the first electrode layer and the second electrode layer from being polluted. layer electrical connections. Alternatively, the positions of the original first electrode layer and the second electrode layer are intermodulated, and a color filter layer is arranged on the first electrode layer and a dielectric layer is arranged between the two electrode layers, so that the first The capacitance value between the electrode layer and the second electrode layer is easy to design. In addition, since the first electrode layer and the second electrode layer of the touch-sensitive color filter are designed with different film layers, it has relatively good touch resolution in a limited touch area. For example, designing a A pixel may correspond to one sensing unit. In addition, when the touch-sensitive color filter of the present invention is applied to a display panel, the operation sensitivity and process reliability of the display panel can be improved.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make various corresponding modifications according to the present invention without departing from the spirit and essence of the present invention. Changes and deformations, but these corresponding changes and deformations should fall within the scope of protection of the appended claims of the present invention.

Claims (21)

1. A touch-sensitive color filter, characterized in that, comprising: a substrate; A black matrix configured on the substrate to define a plurality of sub-pixel regions, the black matrix includes a first electrode layer, and the first electrode layer has a plurality of openings corresponding to the sub-pixel regions; a color filter layer, including a plurality of color filter units respectively arranged in the sub-pixel regions; and a second electrode layer configured on the substrate, the second electrode layer includes a plurality of sub-patterns corresponding to the sub-pixel regions; Wherein, the color filter layer is disposed between the first electrode layer and the second electrode layer. 2 . The touch-sensitive color filter according to claim 1 , wherein the sub-patterns of the second electrode layer are respectively located on the color filter units of the color filter layer. 3. The touch-sensitive color filter according to claim 2, further comprising a first dielectric layer covering the color filter layer and the black matrix, and the second electrode layer is located at the first on a dielectric layer. 4. The touch-sensitive color filter according to claim 1, further comprising a second dielectric layer disposed between the black matrix and the substrate, and the second electrode layer is located at the first Between the two dielectric layers and the substrate. 5. The touch-sensitive color filter according to claim 1, further comprising a third dielectric layer covering the black matrix, the color filter layer and the second electrode layer. 6. The touch-sensitive color filter as claimed in claim 5, further comprising a shared electrode layer disposed on the third dielectric layer. 7. The touch-sensitive color filter according to claim 1, wherein the first electrode layer is made of opaque metal. 8. The touch-sensitive color filter as claimed in claim 1, wherein the black matrix further comprises a black resin layer overlapping with the first electrode layer. 9. The touch-sensitive color filter as claimed in claim 1, wherein the second electrode layer is made of a transparent conductive material. 10. The touch-sensitive color filter as claimed in claim 1, wherein the black matrix further comprises an anti-reflection layer located between the first electrode layer and the substrate. 11. The touch-sensitive color filter according to claim 1, wherein the first electrode layer is an X electrode, comprising a plurality of independent sensing areas, wherein each sensing area corresponds to a plurality of sub-pixel area. 12. The touch-sensitive color filter according to claim 11, wherein the second electrode layer is a Y electrode, and the sub-patterns of the second electrode layer are divided into corresponding sensing areas There are multiple groups of blocks, and the sub-patterns of each group are connected in series. 13. A method for manufacturing a touch-sensitive color filter, comprising: providing a substrate; forming a black matrix on the substrate to define a plurality of sub-pixel regions, wherein forming the black matrix includes forming a first electrode layer, and forming a plurality of corresponding to the sub-pixel regions in the first electrode layer open mouth forming a plurality of color filter units in the sub-pixel regions; forming a second electrode layer on the substrate, wherein the second electrode layer includes a plurality of sub-patterns respectively corresponding to the sub-pixel regions; Wherein, the color filter unit is disposed between the first electrode layer and the second electrode layer. 14. The manufacturing method of the touch-sensitive color filter according to claim 13, wherein the black matrix is firstly formed on the substrate, and after the color filter units are formed, the second The sub-patterns of the electrode layer are on the color filter units. 15. The method for manufacturing a touch-sensitive color filter according to claim 14, further comprising forming a first dielectric layer after forming the black matrix and the color filter units, so that Covering the color filter units and the black matrix, and then forming the second electrode layer on the first dielectric layer. 16. The manufacturing method of the touch-sensitive color filter according to claim 13, wherein the second electrode layer is firstly formed on the substrate, and after forming the second electrode layer, further comprising forming a The second dielectric layer is used to cover the second electrode layer, and then the black matrix and the color filter units are formed. 17. The manufacturing method of the touch-sensitive color filter according to claim 13, further comprising forming a third dielectric layer to cover the black matrix, the color filter units and the first Two electrode layers. 18. The manufacturing method of the touch-sensitive color filter according to claim 17, further comprising forming a common electrode layer on the third dielectric layer. 19. The manufacturing method of the touch-sensitive color filter as claimed in claim 13, wherein forming the black matrix further comprises forming a black resin layer to overlap with the first electrode layer. 20. The manufacturing method of the touch-sensitive color filter as claimed in claim 13, wherein forming the black matrix further comprises forming an anti-reflection layer between the first electrode layer and the substrate. 21. A touch display panel, comprising: A color filter, comprising: a substrate; A black matrix configured on the substrate to define a plurality of sub-pixel regions, the black matrix includes a first electrode layer, and the first electrode layer has a plurality of openings corresponding to the sub-pixel regions; a color filter layer, including a plurality of color filter units respectively arranged in the sub-pixel regions; and a second electrode layer configured on the substrate, the second electrode layer includes a plurality of sub-patterns corresponding to the sub-pixel regions; Wherein, the color filter layer is disposed between the first electrode layer and the second electrode layer; a display array substrate; and A liquid crystal layer is arranged between the color filter and the display array substrate.

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