CN101943970B - Touch flat display panel and manufacturing method thereof - Google Patents

Abstract

The invention relates to a manufacturing method of a touch control plane display panel. A substrate is provided, which has an outer surface and an inner surface opposite to the outer surface. A plurality of bridge wires are formed on the outer surface. A plurality of color filter films arranged in an array are formed on the outer surface, the color filter films are provided with a plurality of contact openings, and partial areas of the bridging wires are respectively exposed by the two contact openings. A sensing circuit layer is formed on the color filter films, wherein part of the sensing circuit layer is electrically connected with the bridge lead through the contact opening. A liquid crystal layer is assembled between the inner surface of the substrate and an array substrate. The invention also discloses a touch control plane display panel.

Description

Touch flat display panel and manufacturing method thereof

technical field

The present invention relates to a touch flat display panel and a manufacturing method thereof, and in particular to a touch liquid crystal display panel and a manufacturing method thereof.

Background technique

In today's various consumer electronics markets, portable electronic products such as personal digital assistants (personal digital assistants, PDAs), mobile phones (mobile phones) and notebook computers (notebooks) have widely used touch panels (touch panels). panel) as a data communication interface tool between the user and the electronic device. Since the current design of electronic products is light, thin, short, and small, it is hoped to save the installation space of traditional input devices such as buttons, keyboards, and mice in product design, especially in tablet computers that emphasize humanized design. Driven by demand, display devices with touch panels have gradually become one of the key components of various electronic products.

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-mounted or integrated/built-in (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.

FIG. 1A is a schematic cross-sectional view of a conventional integrated touch panel. Referring to FIG. 1 , a known integrated touch panel 100A is integrated in the manufacture of a color filter substrate. In the fabrication of the conventional integrated touch liquid crystal display panel 100A, the bridging metal layer 120 , the protective layer OC1 , the sensing circuit layer 130 and the protective layer OC2 are sequentially formed on the outer surface of the substrate 110 . Then turn it over and sequentially form the black matrix BM, the red filter pattern R, the green filter pattern G, the blue filter pattern B, the protective layer OC3, the common electrode COM and the spacer P1 on the inner surface of the substrate 110. .

FIG. 1B is a schematic cross-sectional view of another conventional integrated touch panel. Please refer to FIG. 1B , similar to the integrated touch panel 100A in FIG. 1A , the touch integrated touch panel 100B must first perform four processes on the outer surface of the substrate 110 , and then turn it over on the inner surface of the substrate 110 Another 7 processes are performed on the upper side. The difference between the processes in FIG. 1A and FIG. 1B is that in FIG. 1A the protective layer OC1 covers only part of the bridge metal layer 120, while the protective layer OC1 in FIG. 1B covers the outer surface of the substrate 110 and the bridge metal layer 120. The protective layer OC1 has a plurality of contact openings CW to expose part of the bridging metal layer 120 , and the sensing circuit layer 130 is connected to the bridging metal layer 120 through the contact openings CW.

As mentioned above, since the known integrated touch panels 100A and 100B have to perform 4 processes on the outer surface of the substrate 110, and then turn over and perform another 7 processes on the inner surface of the substrate 110, it is very easy. The components on the touch integrated touch panel 100A are scratched or damaged when turning over and performing a different surface process, thereby reducing the manufacturing yield of the integrated touch panel 100A.

Contents of the invention

The invention provides a touch liquid crystal display panel and a manufacturing method thereof, which can improve the yield rate during production of the touch liquid crystal display panel.

The invention proposes a touch liquid crystal display panel, which includes an array substrate, a touch color filter substrate and a liquid crystal layer. The touch color filter substrate includes a substrate, a plurality of bridge wires, a plurality of color filter films and a sensing circuit layer. The substrate has an outer surface and an inner surface opposite to the outer surface, wherein the distance from the outer surface to the array substrate is greater than the distance from the inner surface to the array substrate. A plurality of bridging wires are disposed on the outer surface, and the above-mentioned color filter films are arranged in an array on the outer surface. These color filter films have a plurality of contact openings, and part of each bridging wire is exposed by two contact openings. . The sensing circuit layer is disposed on the color filter film, and part of the sensing circuit layer is electrically connected to the bridge wire through the contact opening. In addition, the liquid crystal layer is disposed between the array substrate and the touch-sensitive color filter substrate.

The present invention also provides a touch-control liquid crystal display panel, which includes an array substrate, a touch-control color filter substrate and a liquid crystal layer. The touch color filter substrate includes a substrate, a sensing circuit layer, multiple color filter films and multiple bridge wires. The substrate has an outer surface and an inner surface opposite to the outer surface, wherein the distance from the outer surface to the array substrate is greater than the distance from the inner surface to the array substrate. The sensing circuit layer is disposed on the outer surface. The color filter films are arranged in an array on the outer surface to cover part of the sensing circuit layer. These color filter films have a plurality of contact openings to expose part of the sensing circuit layer. The bridging wires are arranged on the color filter film, and each bridging wire is electrically connected to a part of the sensing circuit layer through two contact openings. In addition, the liquid crystal layer is disposed between the array substrate and the touch-sensitive color filter substrate.

In an embodiment of the present invention, the above-mentioned array substrate includes an active device array substrate.

In an embodiment of the present invention, the outer surface of the above-mentioned substrate is divided into a touch area and a peripheral area, the above-mentioned bridge wires, color filter film and sensing circuit layer are located in the touch area, and the touch color The filter substrate further includes a plurality of peripheral circuits disposed in the peripheral region, and these peripheral circuits are electrically connected to the sensing circuit layer.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter substrate further includes a common electrode disposed on the inner surface of the substrate.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter substrate further includes a plurality of spacers disposed on the inner surface of the substrate, wherein each spacer extends toward the array substrate and is in contact with the array substrate.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter substrate further includes a protective layer covering the sensing circuit layer.

In an embodiment of the present invention, the width of each color filter film is greater than the thickness of the substrate.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter substrate further includes a common electrode disposed on the inner surface, and the array substrate further includes a plurality of spacers, and each spacer is connected to the touch-sensitive color filter. The light substrate extends and is in contact with the touch-sensitive color filter substrate.

In an embodiment of the present invention, the above sensing circuit layer includes a plurality of first sensing series and a plurality of second sensing pads. Each of the first sensing series includes a plurality of first sensing pads and a plurality of bridge portions, and each bridge portion is respectively connected between two adjacent first sensing pads. In addition, each bridging wire is electrically connected to two adjacent second sensing pads through two contact openings thereon, and these second sensing pads and the bridging wire form a plurality of second sensing series.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter substrate further includes a patterned light-shielding layer covering the edge of the above-mentioned color filter film, wherein the patterned light-shielding layer has a plurality of pixel openings and the above-mentioned contact openings Each color filter film respectively exposes one of the pixel openings, wherein the sensing circuit layer is disposed on the patterned light-shielding layer, and the patterned light-shielding layer is located in the touch area.

In an embodiment of the present invention, the above-mentioned touch-sensitive color filter substrate further includes a patterned light-shielding layer covering the edge of the above-mentioned color filter film and the bridging wires, wherein the patterned light-shielding layer has a plurality of pixel openings, Each color filter film respectively exposes one of the pixel openings.

The invention provides a method for manufacturing a touch-control liquid crystal display panel, which includes the following steps. A substrate is provided, which has an outer surface and an inner surface opposite to the outer surface. A plurality of bridging wires are formed on the outer surface. A plurality of color filter films arranged in an array are formed on the outer surface, and these color filter films have a plurality of contact openings, and a partial area of each bridge wire is respectively exposed by two contact openings. A sensing circuit layer is formed on the color filter films, wherein part of the sensing circuit layer is electrically connected to the bridge wire through the contact opening. A liquid crystal layer is assembled between the inner surface of the substrate and an array substrate.

The invention also proposes a method for manufacturing a touch-sensitive color filter substrate, which includes the following steps. A substrate is provided, which has an outer surface and an inner surface opposite to the outer surface. A sensing circuit layer is formed on the outer surface. A plurality of color filter films arranged in an array are formed on the outer surface to cover part of the sensing circuit layer. These color filter films have a plurality of contact openings to expose part of the sensing circuit layer. A plurality of bridging wires are formed on the color filter films, wherein each bridging wire is electrically connected with a part of the sensing circuit layer through two contact openings. A liquid crystal layer is assembled between the inner surface of the substrate and an array substrate.

In an embodiment of the present invention, the outer surface of the above-mentioned substrate is divided into a touch area and a peripheral area. At the same time as the wires, a plurality of peripheral circuits are formed in the peripheral area, and these peripheral circuits are electrically connected to the sensing circuit layer.

In an embodiment of the present invention, the manufacturing method of the touch-sensitive color filter substrate further includes forming a common electrode on the inner surface of the substrate.

In one embodiment of the present invention, the method for manufacturing a touch-sensitive color filter substrate further includes forming a common electrode on the inner surface of the substrate, and forming a plurality of spacers on the common electrode, wherein each spacer is directed toward the array The substrate extends and is in contact with the array substrate.

In an embodiment of the present invention, the manufacturing method of the touch-sensitive color filter substrate further includes forming a protective layer on the sensing circuit layer.

In an embodiment of the present invention, the method for manufacturing a touch-sensitive color filter substrate further includes forming a patterned light-shielding layer on the edge of the color filter film and the bridge wires, wherein the patterned light-shielding layer has a plurality of The pixel openings, each color filter film respectively exposes one of the pixel openings.

In an embodiment of the present invention, the method for manufacturing a touch-sensitive color filter substrate further includes forming a protection layer on the above-mentioned color filter film and on the above-mentioned bridging wires.

The invention proposes a touch flat display panel, which includes an array substrate, a touch color filter substrate and a display medium layer. The touch color filter substrate includes a substrate, a plurality of bridge wires, a plurality of color filter films and a sensing circuit layer. The substrate has an outer surface and an inner surface opposite to the outer surface, wherein the distance from the outer surface to the array substrate is greater than the distance from the inner surface to the array substrate. A plurality of bridging wires are disposed on the outer surface, and the above-mentioned color filter films are arranged in an array on the outer surface. These color filter films have a plurality of contact openings, and part of each bridging wire is exposed by two contact openings. . The sensing circuit layer is disposed on the color filter film, and part of the sensing circuit layer is electrically connected to the bridge wire through the contact opening. In addition, the display medium layer is disposed between the array substrate and the touch-sensitive color filter substrate.

The invention also proposes a touch flat display panel, which includes an array substrate, a touch color filter substrate and a display medium layer. The touch color filter substrate includes a substrate, a sensing circuit layer, multiple color filter films and multiple bridge wires. The substrate has an outer surface and an inner surface opposite to the outer surface, wherein the distance from the outer surface to the array substrate is greater than the distance from the inner surface to the array substrate. The sensing circuit layer is disposed on the outer surface. The color filter films are arranged in an array on the outer surface to cover part of the sensing circuit layer. These color filter films have a plurality of contact openings to expose part of the sensing circuit layer. The bridging wires are arranged on the color filter film, and each bridging wire is electrically connected to a part of the sensing circuit layer through two contact openings. In addition, the display medium layer is disposed between the array substrate and the touch-sensitive color filter substrate.

Based on the above, the present invention fabricates the sensing circuit layer, bridging wires and color filter film on the outer surface of a single substrate to improve the known scratches or damages caused by the flipping of the substrate, thereby improving the touch-sensitive color filter. Manufacturing yields of substrates and touch LCD panels.

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.

Description of drawings

1A is a schematic cross-sectional view of a conventional integrated touch panel;

1B is a schematic cross-sectional view of another known integrated touch panel;

2 is a top view of a touch liquid crystal display panel according to an embodiment of the present invention;

3A to 3H and 4A to 4H are schematic diagrams of the manufacturing process of the touch liquid crystal display panel in FIG. 2 ;

FIGS. 5A-5B and FIGS. 6A-6B are schematic diagrams of a manufacturing process of a touch liquid crystal display panel according to another embodiment;

7 is a top view of a touch liquid crystal display panel according to another embodiment of the present invention;

8A-8H and FIGS. 9A-9H are schematic diagrams of the manufacturing process of the touch liquid crystal display panel in FIG. 7;

FIGS. 10A-10B and FIGS. 11A-11B are schematic diagrams of a manufacturing process of a touch liquid crystal display panel according to another embodiment;

FIG. 12 is a schematic diagram of a color filter film and a substrate.

Among them, reference signs

100A, 100B: Integrated touch panel 110, 222: Substrate

120: Bridge metal layer 130, 228: Sensing circuit layer

200, 700: touch liquid crystal display panel 210: array substrate

220: Touch color filter substrate 222a: Outer surface

222b: inner surface 224: bridge wire

226: Color filter film 228a, PAD: Sensing pad

230: Liquid crystal layer OC1, OC2, OC3: protective layer

BM: Black Matrix COM: Common Electrode

P1: Clearance object CW: Contact opening

BM1: patterned shading layer R, G, B: light filter pattern

WP1: pixel aperture S1, S2: sensing series

BR: bridge part d1: thickness of substrate

W1: Width of single color filter film

Detailed ways

FIG. 2 is a top view of a touch liquid crystal display panel according to an embodiment of the present invention. Fig. 3H is a sectional view of line A-A' in Fig. 2 . Figure 4H is a sectional view of line I-I' in Figure 2. Please refer to FIG. 2, FIG. 3H and FIG. 4H at the same time. The touch liquid crystal display panel 200 of this embodiment includes an array substrate 210, a touch color filter substrate 220, a liquid crystal layer 230 and a plurality of peripheral circuits (not shown). Show). In this embodiment, the array substrate 210 is, for example, an active device array substrate. Generally speaking, the active device array substrate includes active devices, scan lines, data lines, pixel electrodes, storage capacitors and other components. The touch-sensitive color filter substrate 220 includes a substrate 222 (or referred to as a substrate), a plurality of bridging wires 224, a plurality of color filter films 226, a sensing circuit layer 228, a common electrode COM, and a plurality of spacers. P1 , an overcoat layer OC1 and a patterned light-shielding layer BM1 . In addition, the liquid crystal layer 230 is disposed between the array substrate 210 and the touch-sensitive color filter substrate 220 , and the liquid crystal layer 230 is suitable for changing the orientation of liquid crystal molecules therein through voltage regulation.

The aforementioned substrate 222 has an outer surface 222a and an inner surface 222b opposite to the outer surface 222a, and the distance from the outer surface 222a to the array substrate 210 is greater than the distance from the inner surface 222b to the array substrate 210 . In addition, the outer surface 222a of the substrate 222 is divided into a touch area and a peripheral area (not shown), wherein the touch area is the area where the user can view and perform touch actions. The above-mentioned bridge wires 224, color filter film 226 And the sensing circuit layer 228 is located in the touch area. The peripheral area is used to configure peripheral circuits, wherein the peripheral circuits are connected to the sensing circuit layer 228 to transmit the sensing signal to the back-end touch sensing integrated circuit (IC). The touch sensing integrated circuit can determine the touched position on the touch liquid crystal display panel 200 after receiving the sensing signal. Usually, the peripheral circuits are usually covered by the product shell of the touch liquid crystal display panel 200 and cannot be seen by the user.

In this embodiment, the bridge wires 224 are directly disposed on the outer surface 222a, and the color filter film 226 is also arranged in an array on the outer surface 222a, wherein the color filter film 226 has a plurality of contact openings CW (as shown in FIG. 4H ), so that partial areas of the bridging wires 224 are respectively exposed by the two contact openings CW. The sensing circuit layer 228 is disposed on the color filter film 226 , and part of the sensing circuit layer 228 is electrically connected to the bridge wire 224 through the contact opening CW. The protection layer OC1 covers the sensing circuit layer 228 . In addition, the common electrode COM is disposed on the inner surface 222 b of the substrate 222 , and the spacers P1 are disposed on the common electrode COM, and each spacer extends toward the array substrate 210 and contacts the array substrate 210 .

It can be seen from FIG. 3H and FIG. 4H that in this embodiment, the bridging wires 224, the color filter film 226 and the sensing circuit layer 228 in the touch liquid crystal display panel 200 are fabricated on the same side of the substrate 222, so as to reduce the inconvenience of turning over the substrate 222. The chance of scratching caused thereby improves the manufacturing yield of the touch liquid crystal display panel 200 .

It should be noted that the common electrode COM, the overcoat layer OC1 and the patterned light-shielding layer BM1 can be selectively manufactured in the touch-sensitive color filter substrate 220 according to the structural design and requirements, and they are not necessarily required to be manufactured. For example, when the touch liquid crystal display panel 200 is an in-plane switching (In Plane Switching, IPS) liquid crystal display panel, the common electrodes are fabricated on the array substrate 210, and there is no need to fabricate common electrodes on the touch-sensitive color filter substrate 220. Electrode com. In addition, the protective layer OC1 and the patterned light-shielding layer BM1 can also be selectively fabricated on the touch-sensitive color filter substrate 220 according to product design requirements.

In addition, the spacers P1 may be columnar spacers formed by a photolithography process, or spherical spacers sprinkled on the array substrate, and formed between the substrates 210 and 222 after being assembled. Based on the above, the spacer P1 is not limited to be fabricated on the inner surface of the substrate 222, it can also be fabricated on the array substrate 210. The substrate 220 extends and is in contact with the touch-sensitive color filter substrate 220 .

3A-3H and 4A-4H are schematic diagrams of the manufacturing process of the touch liquid crystal display panel in FIG. 2 . 3A to 3H are cross-sectional views along line A-A' in FIG. 2 . 4A to 4H are cross-sectional views along line I-I' in FIG. 2 . The manufacturing method of the touch liquid crystal display panel 200 will be described below with reference to FIG. 2 , FIGS. 3A-3H , and FIGS. 4A-4H .

First, referring to FIG. 2 , FIG. 3A and FIG. 4A , a substrate 222 having an outer surface 222 a and an inner surface 222 b is provided, wherein the inner surface 222 b and the outer surface 222 a are two opposite surfaces of the substrate 222 . The substrate 222 can be selected, for example, a glass substrate, a quartz substrate, a plastic substrate, a strengthened glass substrate, or other suitable substrates.

Next, a plurality of bridging wires 224 are formed on the outer surface 222a. In this embodiment, the material of the bridging wires 224 is, for example, metal or a transparent conductive material, such as copper, aluminum, titanium, molybdenum, silver or gold, etc., which are transparent and conductive. The material is, for example, indium tin oxide (ITO) or indium zinc oxide (IZO), which may be a single layer or a multilayer stack of the aforementioned materials. In addition, when forming the bridging wires 224 , a plurality of peripheral circuits are also formed in the above-mentioned peripheral area at the same time, so that the peripheral circuits can be electrically connected with the sensing circuit layer 228 formed later. In this embodiment, the material of the peripheral circuit can be selected from metal or other materials that are easy to conduct electricity.

Next, please refer to FIG. 2, FIG. 3B and FIG. 4B at the same time, on the outer surface 222a, a plurality of color filter films 226 arranged in an array are formed, wherein these color filter films 226 have a plurality of contact openings CW. In this embodiment, only two contact openings CW are shown. The positions of the above-mentioned contact openings CW correspond to the two ends of the bridging wires 224 respectively, so that part of the regions (both ends) of the bridging wires 224 are not covered by the color filter film 226 but exposed by the contact openings CW.

In addition, the color filter film 226 of this embodiment includes a red filter pattern R, a green filter pattern G and a blue filter pattern B. As shown in FIG. However, the above-mentioned red, green, and blue light filter patterns R, G, and B are only used to illustrate the color filter film 226 shown in the drawings of this embodiment, and are not used to limit the color filter patterns of the present invention. color and number.

Next, please refer to FIG. 2 , FIG. 3C and FIG. 4C at the same time, a patterned light-shielding layer BM1 is formed on the edge of the above-mentioned color filter film 226 and the bridge wires 224, wherein the patterned light-shielding layer BM1 has a plurality of pixel openings WP1 (such as 3C ) and a plurality of the contact openings CW mentioned above, each color filter film 226 exposes one of the pixel openings WP1 respectively. The material of the light-shielding pattern layer BM1 is a light-shielding insulating material, such as black resin.

Then, please refer to FIG. 2, FIG. 3D and FIG. 4D at the same time, a sensing circuit layer 228 is formed on the color filter film 226, and the two contact openings CW in FIG. The opening CW is electrically connected to the bridging wire 224 . The sensing circuit layer 228 includes a plurality of sensing pads 228a and a plurality of first sensing series S1, and each sensing series S1 includes a plurality of sensing pads PAD and a plurality of bridges BR, wherein each bridge BR respectively connected between two adjacent sensing pads PAD. In addition, the sensing pad 228a and the bridge wire 224 form a second sensing series S2.

Referring to FIG. 2 , FIG. 3E and FIG. 4E simultaneously, a protective layer OC1 is formed on the sensing circuit layer 228 to protect the film covered by the protective layer OC1 . After the protective layer OC1 is formed, the touch-sensitive color filter substrate 220 is turned over to form the common electrode COM, as shown in FIG. 2 , FIG. 3F and FIG. 4F . In this embodiment, the material of the common electrode COM is, for example, indium tin oxide (Indium-Tin-Oxide, ITO), indium zinc oxide (Indium Zinc Oxide, IZO), aluminum zinc oxide (AZO), aluminum tin oxide (ATO), tin oxide (HfO), indium germanium zinc oxide (IGZO) or other suitable transparent materials. Of course, the present invention can also select the material of the common electrode according to the type of display panel to be formed later. The common electrode COM is formed on the touch-sensitive color filter substrate 220 by sputtering, for example.

After the common electrode COM is formed, a plurality of spacers P1 can be selectively formed on the common electrode COM (as shown in FIG. 2 , FIG. 3G and FIG. 4G ), wherein each spacer P1 extends toward the array substrate 210 . After the touch-sensitive color filter substrate 220 and the array substrate 210 are assembled, the liquid crystal layer 230 can be filled into the touch-sensitive Between the color filter substrate 220 and the array substrate 210 . At this time, the spacer P1 on the touch-sensitive color filter substrate 220 will be in contact with the array substrate 210 (as shown in FIG. 2 , FIG. 3H and FIG. 4H ).

As mentioned above, compared with the known manufacturing method of the touch liquid crystal display panel, the manufacturing method of the touch liquid crystal display panel 200 of this embodiment only needs two steps after turning the touch color filter substrate 220 over. One-way process, that is, forming the common electrode COM and the spacer P1. Since the number of processes required to be performed after turning over is less, the probability of the film being scratched is lower, so the manufacturing yield of the touch liquid crystal display panel 200 can be improved.

It should be noted that, in other feasible embodiments, the common electrode COM (such as an in-plane switching liquid crystal display panel) and the spacer P1 are not required to be formed on the touch LCD panel 200 . In addition, the overcoat layer OC1 and the patterned light-shielding layer BM1 are not essential components for the touch-sensitive color filter substrate 220 .

Based on the above, in this embodiment, the steps in FIGS. 3F to 3H and FIGS. 4F to 4H can be replaced by the steps in FIGS. 5A to 5B and FIGS. After P1 ( FIG. 5A and FIG. 6A ), the liquid crystal layer 230 is filled between the touch-sensitive color filter substrate 220 and the array substrate 210 ( FIG. 5B and FIG. 6B ).

FIG. 7 is a top view of a touch liquid crystal display panel according to another embodiment of the present invention. Fig. 8H is a sectional view of line A-A' in Fig. 7 . Figure 9H is a sectional view of line I-I' in Figure 7. Please refer to FIG. 7, FIG. 8H and FIG. 9H at the same time. The touch liquid crystal display panel 700 of this embodiment also includes an array substrate 210, a touch color filter substrate 220, a liquid crystal layer 230 and a plurality of peripheral circuits (not shown). drawn). And the touch color filter substrate 220 also includes a substrate 222, a plurality of bridging wires 224, a plurality of color filter films 226, a sensing circuit layer 228, a common electrode COM, a plurality of spacers P1, a protection layer OC1 and a patterned light-shielding layer BM1. The touch liquid crystal display panel 700 of this embodiment differs from the touch liquid crystal display panel 200 of the embodiment shown in FIG. 2 in that the structure of the touch color filter substrate 220 is different.

In this embodiment, the sensing circuit layer 228 is disposed on the outer surface 222a. The sensing series S1 includes a plurality of sensing pads PAD and a plurality of bridges BR, and each sensing series S2 is composed of a plurality of sensing pads 228 a and a plurality of bridge wires 224 .

The color filter film 226 is arranged in an array on the outer surface to cover part of the sensing circuit layer 228 , wherein the color filter film 226 has a plurality of contact openings CW, so that part of the sensing circuit layer 228 is exposed. The bridge wires 224 are disposed on the color filter film 226 , and each bridge wire 224 is electrically connected to a part of the sensing circuit layer 228 through the two contact openings CW. The patterned light-shielding layer BM1 covers the edges of the color filter film 226 and the bridge wires 224 , wherein the patterned light-shielding layer CF1 has a plurality of pixel openings MP1 , and each color filter film CF1 exposes one of the pixel openings MP1 . In addition, the protection layer OC1 covers the sensing circuit layer 228 . Since the element structures of other parts of the touch LCD panel 700 are similar to the touch LCD panel 200 of the embodiment shown in FIG. 2 , those skilled in the art should be able to deduce them based on the teachings of the above embodiments, and thus will not be repeated here.

As mentioned above, although the element structure of the touch liquid crystal display panel 700 of this embodiment is different from that of the touch liquid crystal display panel 200, the bridge wires 224, the color filter film 226 and the sensing circuit layer 228 are still fabricated on the substrate 222. Therefore, the chance of scratching caused by the substrate 222 turning over can be reduced, thereby improving the manufacturing yield of the touch liquid crystal display panel 200 .

8A to 8H and FIGS. 9A to 9H are schematic diagrams of the manufacturing process of the touch liquid crystal display panel of the embodiment shown in FIG. 7 . 8A to 8H are cross-sectional views along line A-A' in FIG. 7 . 9A to 9H are cross-sectional views along line I-I' in FIG. 7 . The manufacturing method of the touch liquid crystal display panel 700 will be described below with reference to FIG. 7 , FIGS. 8A-8H , and FIGS. 9A-9H .

First, please refer to FIG. 7 , FIG. 8A and FIG. 9A simultaneously, a substrate 222 having an outer surface 222 a and an inner surface 222 b is provided, wherein the inner surface 222 b and the outer surface 222 a are opposite surfaces of the substrate 222 . Afterwards, a sensing circuit layer 228 is formed on the outer surface 222a.

Next, referring to FIG. 7 , FIG. 8B and FIG. 9B , a plurality of color filter films 226 arranged in an array are formed on the outer surface 222 a, wherein the color filter films 226 have a plurality of contact openings CW. In this embodiment, only two contact openings CW are shown, and the positions of the two contact openings CW respectively expose part of the sensing circuit layer 228 (that is, the end portion of the sensing pad 228 a near the bridge portion BR).

Next, please refer to FIG. 7, FIG. 8C and FIG. 9C at the same time, a plurality of bridge wires 224 are formed on the color filter film 226, wherein each bridge wire 224 is electrically connected to a part of the sensing circuit layer 228 through two contact openings CW. connect. Similarly, when forming the bridging wires 224 , a plurality of peripheral circuits are also formed in the peripheral area at the same time, so that the peripheral circuits can be electrically connected with the sensing circuit layer 228 formed later.

Next, please refer to FIG. 7, FIG. 8D and FIG. 9D at the same time, a patterned light-shielding layer BM1 is formed on the edge of the above-mentioned color filter film 226 and the bridge wire 224, wherein the patterned light-shielding layer BM1 has a plurality of pixel openings MP1 (such as As shown in FIG. 8D ), each color filter film 226 exposes one of the pixel openings WP1 respectively. It should be noted that, in other embodiments, the fabrication of the bridge wires 224 can also be integrated with the patterned light-shielding layer BM1 made of low-reflection chrome (Cr).

Afterwards, referring to FIG. 7 , FIG. 8E and FIG. 9E , a protective layer OC1 is formed on the color filter film 226 and the bridge wires 224 to protect the films covered by the protective layer OC1 . After the protective layer OC1 is formed, the touch-sensitive color filter substrate 220 can be turned over to form the common electrode COM, the spacer P1, and the assembly of the liquid crystal layer 230 as in the embodiment shown in FIG. 2 , as shown in FIG. 7 and FIG. 8F ~ Figure 8H and Figure 9F ~ Figure 9H. Since the steps shown in FIG. 7 , 8F-8H and 9F-9H are the same as those shown in FIG. 2 , 3F-3H and 4F-4H, they are not repeated here.

As mentioned above, compared with the known manufacturing method of the touch liquid crystal display panel, the manufacturing method of the touch liquid crystal display panel 700 of this embodiment only needs two steps after the touch color filter substrate 220 is turned over. One-way process, that is, forming the common electrode COM and the spacer P1. Therefore, the probability of the film being scratched and damaged can be reduced, and the manufacturing yield of the touch liquid crystal display panel 700 can be improved.

It is worth noting that, similarly, in other feasible embodiments, the touch LCD panel 700 does not need to form the common electrode COM (such as an in-plane switching touch LCD panel). In addition, the overcoat layer OC1 and the patterned light-shielding layer BM1 are not essential components for the touch-sensitive color filter substrate 220 .

Based on the above, in this embodiment, the steps in FIGS. 8F to 8H and FIGS. 9F to 9H may be replaced by the steps in FIGS. 10A to 10B and FIGS. 11A to 11B respectively, and the spacer P1 is formed on the array substrate 210 first ( FIG. 10A and FIG. 11A ), and then fill the liquid crystal layer 230 between the touch-sensitive color filter substrate 220 and the array substrate 210 ( FIG. 10B and FIG. 11B ).

It is also worth noting that the width W1 of the single-color filter film 226 is preferably designed to be greater than the thickness d1 of the substrate 222, so as to avoid oblique light leakage in the touch liquid crystal display panel in the above embodiment, as shown in FIG. 12 Schematic diagram of the color filter film and substrate shown.

In addition to the above-mentioned touch liquid crystal display panel, the present invention also provides other display medium layers to replace the liquid crystal layer to make a touch flat display panel. The detailed structure and manufacturing method are as described in the previous embodiments, so they will not be repeated here. Wherein, besides the above-mentioned liquid crystal layer, the display medium layer may also use an electrophoretic display material layer, an organic luminescent material layer or a plasma display material layer, etc., but is not limited thereto.

To sum up, the present invention utilizes the sensing circuit layer, the bridge wire and the color filter film to be fabricated on the outer surface of a single substrate, which can improve the scratches caused by the flipping of the substrate in the process of manufacturing the touch flat display panel. scratch or damage, thereby improving the manufacturing yield of the touch color filter substrate and the touch flat display panel.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (33)

1. A touch liquid crystal display panel, characterized in that, comprising: an array substrate; A touch-sensitive color filter substrate, including a substrate, a plurality of bridging wires, a plurality of color filter films and a sensing circuit layer; the substrate has an outer surface and an inner surface opposite to the outer surface, wherein the The distance from the outer surface to the array substrate is greater than the distance from the inner surface to the array substrate; a plurality of bridging wires are arranged on the outer surface; the plurality of color filter film arrays are arranged on the outer surface, and the color filter The film has a plurality of contact openings, and part of each bridge wire is exposed by two contact openings; the sensing circuit layer is disposed on the color filter films, and part of the sensing circuit layer is connected to the bridges through the contact openings wires are electrically connected; and A liquid crystal layer is disposed between the array substrate and the touch-sensitive color filter substrate. 2. The touch liquid crystal display panel according to claim 1, wherein the array substrate comprises an active device array substrate. 3. The touch-sensitive liquid crystal display panel according to claim 1, wherein the outer surface of the substrate is divided into a touch area and a peripheral area, the bridging wires, the color filter films and the The sensing circuit layer is located in the touch area, and the touch color filter substrate further includes: A plurality of peripheral circuits are arranged in the peripheral region, and these peripheral circuits are electrically connected with the sensing circuit layer. 4. The touch-sensitive liquid crystal display panel according to claim 1, wherein the touch-sensitive color filter substrate further comprises: A common electrode is disposed on the inner surface of the substrate. 5. The touch-sensitive liquid crystal display panel according to claim 1, wherein the touch-sensitive color filter substrate further comprises: A plurality of spacers are arranged on the inner surface of the substrate, wherein each of the spacers extends toward the array substrate and is in contact with the array substrate. 6. The touch-sensitive liquid crystal display panel according to claim 1, wherein the touch-sensitive color filter substrate further comprises: A protection layer covers the sensing circuit layer. 7. The touch liquid crystal display panel according to claim 1, wherein the width of each of the color filter films is greater than the thickness of the substrate. 8. The touch-sensitive liquid crystal display panel according to claim 1, wherein the touch-sensitive color filter substrate further comprises a common electrode disposed on the inner surface, and the array substrate further comprises multiple spacers, and each of the spacers extends toward the touch-sensitive color filter substrate and is in contact with the touch-sensitive color filter substrate. 9. The touch liquid crystal display panel according to claim 1, wherein the sensing circuit layer comprises: A plurality of first sensing series, each of which includes: a plurality of first sensing pads; a plurality of bridges, each of which is connected between two adjacent first sensing pads ;as well as A plurality of second sensing pads, wherein each of the bridging wires is electrically connected to two adjacent second sensing pads through two contact openings on it, and these second sensing pads and the bridging wires form a plurality of a second sensing series. 10. The touch-sensitive liquid crystal display panel according to claim 1, wherein the touch-sensitive color filter substrate further comprises: A patterned light-shielding layer covering the edges of these color filter films, wherein the patterned light-shielding layer has a plurality of pixel openings and these contact openings, each of the color filter films respectively exposes one of the pixel openings, wherein the sensing circuit A layer is disposed on the patterned light-shielding layer, and the patterned light-shielding layer is located in the touch area. 11. A touch liquid crystal display panel, characterized in that it comprises: an array substrate; A touch-sensitive color filter substrate, including a substrate, a sensing circuit layer, a plurality of color filter films and a plurality of bridging wires; the substrate has an outer surface and an inner surface opposite to the outer surface, wherein the The distance from the outer surface to the array substrate is greater than the distance from the inner surface to the array substrate; the sensing circuit layer is arranged on the outer surface; the plurality of color filter film arrays are arranged on the outer surface to cover part of the The sensing circuit layer, these color filter films have a plurality of contact openings, exposing part of the sensing circuit layer; the plurality of bridging wires are arranged on the color filter film, and each bridging wire passes through two contact openings and partly The sensing line layer is electrically connected; and A liquid crystal layer is disposed between the array substrate and the touch-sensitive color filter substrate. 12. The touch liquid crystal display panel according to claim 11, wherein the array substrate comprises an active device array substrate. 13. The touch-sensitive liquid crystal display panel according to claim 11, wherein the outer surface of the substrate is divided into a touch area and a peripheral area, the bridging wires, the color filter films and the The sensing circuit layer is located in the touch area, and the touch color filter substrate further includes: A plurality of peripheral circuits are arranged in the peripheral region, and these peripheral circuits are electrically connected with the sensing circuit layer. 14. The touch-sensitive liquid crystal display panel according to claim 11, wherein the touch-sensitive color filter substrate further comprises: A common electrode is disposed on the inner surface of the substrate. 15. The touch-sensitive liquid crystal display panel according to claim 11, wherein the touch-sensitive color filter substrate further comprises: a common electrode disposed on the inner surface of the substrate; and A plurality of spacers are arranged on the common electrode, wherein each of the spacers extends toward the array substrate and contacts with the array substrate. 16. The touch-sensitive liquid crystal display panel according to claim 11, wherein the touch-sensitive color filter substrate further comprises: A protection layer covers the sensing circuit layer. 17. The touch liquid crystal display panel according to claim 11, wherein the width of each of the color filter films is greater than the thickness of the substrate. 18. The touch-sensitive liquid crystal display panel according to claim 11, wherein the touch-sensitive color filter substrate further comprises a common electrode disposed on the inner surface, and the array substrate further comprises multiple spacers, and each of the spacers extends toward the touch-sensitive color filter substrate and is in contact with the touch-sensitive color filter substrate. 19. The touch-sensitive liquid crystal display panel according to claim 11, wherein the sensing circuit layer comprises: A plurality of first sensing series, each of which includes: a plurality of first sensing pads; and a plurality of bridges, each of which is connected to two adjacent first sensing pads room; and A plurality of second sensing pads, wherein each of the bridge wires is electrically connected to two adjacent second sensing pads, and the second sensing pads and the bridge wires form a plurality of second sensing series. 20. The touch-sensitive liquid crystal display panel according to claim 11, wherein the touch-sensitive color filter substrate further comprises: A patterned light-shielding layer covers the edges of the color filter films and the bridge wires, wherein the patterned light-shielding layer has a plurality of pixel openings, and each of the color filter films respectively exposes one of the pixel openings. 21. A method for manufacturing a touch-sensitive liquid crystal display panel, comprising: providing a substrate having an outer surface and an inner surface opposite the outer surface; forming a plurality of bridging wires on the outer surface; A plurality of color filter films arranged in an array are formed on the outer surface, and these color filter films have a plurality of contact openings, and a partial area of each bridge wire is exposed by two contact openings; forming a sensing circuit layer on the color filter films, wherein part of the sensing circuit layer is electrically connected to the bridge wires through the contact openings; and A liquid crystal layer is assembled between the inner surface of the substrate and an array substrate. 22. The method of manufacturing a touch-sensitive liquid crystal display panel according to claim 21, wherein the outer surface of the substrate is divided into a touch area and a peripheral area, the bridging wires, the color filter The thin film and the sensing circuit layer are located in the touch area, and while forming the bridging wires, a plurality of peripheral circuits are formed in the peripheral area, and the peripheral circuits are electrically connected to the sensing circuit layer. 23. The method for manufacturing a touch-sensitive liquid crystal display panel according to claim 21, further comprising: A common electrode is formed on the inner surface of the substrate. 24. The method for manufacturing the touch-sensitive liquid crystal display panel according to claim 21, further comprising: forming a common electrode on the inner surface of the substrate; and A plurality of spacers are formed on the common electrode, wherein each of the spacers extends toward the array substrate and is in contact with the array substrate. 25. The method for manufacturing a touch-sensitive liquid crystal display panel according to claim 21, further comprising: A protective layer is formed on the sensing circuit layer. 26. A method for manufacturing a touch-sensitive liquid crystal display panel, comprising: providing a substrate having an outer surface and an inner surface opposite the outer surface; forming a sensing circuit layer on the outer surface; forming a plurality of color filter films arranged in an array on the outer surface to cover part of the sensing circuit layer, these color filter films have a plurality of contact openings, exposing part of the sensing circuit layer; forming a plurality of bridging wires on the color filter films, wherein each bridging wire is electrically connected to a part of the sensing circuit layer through two contact openings; and A liquid crystal layer is assembled between the inner surface of the substrate and an array substrate. 27. The method for manufacturing a touch-sensitive liquid crystal display panel according to claim 26, further comprising: A patterned light-shielding layer is formed on the edges of the color filter films and the bridge wires, wherein the patterned light-shield layer has a plurality of pixel openings, and each of the color filter films respectively exposes one of the pixel openings. 28. The method for manufacturing a touch-sensitive liquid crystal display panel according to claim 26, wherein the outer surface of the substrate is divided into a touch area and a peripheral area, the bridging wires, the color filter The thin film and the sensing circuit layer are located in the touch area, and while forming the bridging wires, a plurality of peripheral circuits are formed in the peripheral area, and the peripheral circuits are electrically connected to the sensing circuit layer. 29. The manufacturing method of the touch-control liquid crystal display panel according to claim 26, further comprising: A common electrode is formed on the inner surface of the substrate. 30. The method for manufacturing a touch-sensitive liquid crystal display panel according to claim 26, further comprising: forming a common electrode on the inner surface of the substrate; and A plurality of spacers are formed on the common electrode, wherein each of the spacers extends toward the array substrate and is in contact with the array substrate. 31. The method for manufacturing a touch-sensitive liquid crystal display panel according to claim 26, further comprising: A protection layer is formed on the color filter films and the bridge wires. 32. A touch flat display panel, comprising: an array substrate; A touch-sensitive color filter substrate, including a substrate, a plurality of bridging wires, a plurality of color filter films and a sensing circuit layer; the substrate has an outer surface and an inner surface opposite to the outer surface, wherein the The distance from the outer surface to the array substrate is greater than the distance from the inner surface to the array substrate; the plurality of bridging wires are arranged on the outer surface; the plurality of color filter film arrays are arranged on the outer surface, and the color The filter film has a plurality of contact openings, and part of each bridge wire is exposed by two contact openings; the sensing circuit layer is arranged on the color filter films, and part of the sensing circuit layer communicates with the contact openings through the contact openings. These bridging wires are electrically connected; and A display medium layer is disposed between the array substrate and the touch-sensitive color filter substrate. 33. A touch flat display panel, comprising: an array substrate; A touch-sensitive color filter substrate, including a substrate, a sensing circuit layer, a plurality of color filter films and a plurality of bridging wires; the substrate has an outer surface and an inner surface opposite to the outer surface, wherein the The distance from the outer surface to the array substrate is greater than the distance from the inner surface to the array substrate; the sensing circuit layer is arranged on the outer surface; the plurality of color filter film arrays are arranged on the outer surface to cover part of the The sensing circuit layer, these color filter films have a plurality of contact openings, exposing part of the sensing circuit layer; the plurality of bridging wires are arranged on the color filter film, and each bridging wire passes through two contact openings and partly The sensing line layer is electrically connected; and A display medium layer is disposed between the array substrate and the touch-sensitive color filter substrate.

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