TWI396886B - Liquid crystal display panel and fabricating method thereof - Google Patents

Description

Liquid crystal display panel and method of manufacturing same

The present invention relates to a display panel and a method of fabricating the same, and more particularly to a liquid crystal display panel and a method of fabricating the same.

Today's social multimedia technology is quite developed, and most of them benefit from the advancement of semiconductor components or display devices. As far as the display is concerned, a liquid crystal display having superior characteristics such as high image quality, good space utilization efficiency, low power consumption, and no radiation has gradually become the mainstream of the market.

The liquid crystal display panel is usually composed of two substrates and a liquid crystal layer sandwiched between the two substrates. In order to maintain the gap height between the two substrates, a plurality of spacers are usually disposed between the two substrates. However, since the conventional spacer is simply placed between the two substrates, when the liquid crystal display panel is subjected to lateral stress, it is easy to displace the two substrates to cause abnormal display such as light leakage or darkness.

In order to improve the above problems, a solution has been proposed. 1 is a top plan view of a thin film transistor array substrate of a conventional liquid crystal display panel, and FIG. 2 is a cross-sectional view of a conventional liquid crystal display panel, which corresponds to a cross-sectional view taken along line A-A' of FIG. 1. Referring to FIG. 1 and FIG. 2 together, the structure of the liquid crystal display panel 100 includes a first substrate 110, a plurality of scan lines 120 (only one is drawn in the figure), and a plurality of data lines 130 (only one is drawn in the figure). An insulating layer 140, a plurality of thin film transistors 150 (only one is drawn in the drawing), a plurality of pixel electrodes 160 (only one is drawn in the drawing), a second substrate 170, a liquid crystal layer 180 and a plurality of columns A spacer 190 and/or a plurality of column spacers 192 (only one column spacer 190 and one column spacer 192 are shown in the drawing). The scan line 120 and the data line 130 are disposed on the first substrate 110, and the insulating layer 140 is disposed between the scan line 120 and the data line 130. The thin film transistor 150 is disposed on the first substrate 110, and includes a gate 152, a channel layer 154, a source 156 and a drain 158, and the gate 152 is electrically connected to the scan line 120, and the source 156 is The data line 130 is electrically connected, and the drain 158 is electrically connected to the pixel electrode 160 through the contact window 162. In addition, the pixel electrode 160 is electrically coupled to the capacitor 166 using another contact window 164. An electrode layer 172 and a column spacer 190 are disposed on the second substrate 170, and then the first substrate 110 and the second substrate 170 are assembled and coupled, and the other end of the column spacer 190 is placed in the contact window 164. The liquid crystal layer 180 is disposed between the first substrate 110 and the second substrate 170.

In addition to the above-described columnar spacers 190 disposed in the contact window 164, there are other conventional techniques for arranging the columnar spacers 192 in the contact windows 162.

However, whether the column spacers 190 or 192 are disposed in the contact window 162 or 164 to be engaged, when the user creates a lateral stress on the surface of the liquid crystal display panel 100, the column spacers 190 and 192 are caused. Due to this lateral stress, displacement occurs to make it difficult to recover. This is because the apertures of the contact windows 162, 164 are too small such that the column spacers 190, 192 are less susceptible to return to the contact windows 162, 164 after displacement. This causes the liquid crystal display panel 100 to cause an abnormal display phenomenon such as light leakage or blackening.

In view of the above, an object of the present invention is to provide a liquid crystal display panel to solve the problem of light leakage or blackening of the liquid crystal display panel.

Another object of the present invention is to provide another liquid crystal display panel to solve the phenomenon of light leakage or blackening of the liquid crystal display panel, thereby maintaining the contrast of the liquid crystal display panel.

Another object of the present invention is to provide a method for fabricating a liquid crystal display panel to solve the phenomenon of light leakage or blackening of the liquid crystal display panel, thereby maintaining contrast and luminance uniformity of the liquid crystal display panel.

The present invention provides a liquid crystal display panel including a first substrate, a plurality of scan lines and a plurality of data lines, an insulating layer, a plurality of thin film transistors, a plurality of pixel electrodes, a plurality of retaining wall patterns, and a second a substrate, a liquid crystal layer and a plurality of column spacers. The scan line and the data line are disposed on the first substrate, and the insulating layer is disposed between the scan line and the data line. The thin film transistor is disposed on the first substrate, wherein each of the thin film transistors includes a gate, a channel layer, a source and a drain, and the gate is electrically connected to one of the scan lines, and the source is One of the data lines is electrically connected. Each of the pixel electrodes is electrically connected to the drain of one of the thin film transistors. The retaining wall pattern is on the insulation. The second substrate is disposed opposite to the first substrate, and the liquid crystal layer is located between the first and second substrates. The plurality of column spacers are disposed between the second substrate and the first substrate, and one end of each of the column spacers is disposed inside each of the barrier patterns on the first substrate.

In an embodiment of the invention, the above-mentioned retaining wall pattern is located on the insulating layer above the scanning line.

In an embodiment of the invention, the above-mentioned retaining wall pattern is a single layer structure, and the material thereof is the same as the material of the source and the drain.

In an embodiment of the invention, the above-mentioned retaining wall pattern is a single layer structure, and the material thereof is the same as the material of the channel layer.

In an embodiment of the invention, the above-mentioned retaining wall pattern comprises a lower layer and an upper layer, wherein the material of the lower layer is the same as the material of the channel layer, and the material of the upper layer is the same as the material of the source and the drain.

In an embodiment of the invention, the columnar spacers are placed in each of the retaining wall patterns, and the distance between the columnar spacers and the retaining wall pattern is greater than 3 micrometers.

In an embodiment of the invention, the above-mentioned retaining wall pattern comprises a continuous retaining wall pattern or a discontinuous retaining wall pattern.

In an embodiment of the invention, the liquid crystal display panel further includes a color filter array disposed on the second substrate, and the column spacers are disposed on the color filter array.

In an embodiment of the invention, the liquid crystal display panel further includes an electrode layer disposed on the second substrate, and the column spacer is disposed on the electrode layer.

The invention further provides a liquid crystal display panel, comprising a first substrate, a pixel array, a color filter array, a second substrate, a plurality of protrusion structures, a plurality of barrier patterns, a liquid crystal layer and a plurality of columns Shaped spacer. The pixel array is disposed on the first substrate, wherein each pixel includes a scan line, a data line, a thin film transistor, and a pixel electrode. The color filter array is disposed above the pixel array, and the second substrate is disposed opposite to the first substrate. The protruding structure is disposed on the second substrate, and the retaining wall pattern is disposed on the second substrate. The liquid crystal layer is disposed between the first substrate and the second substrate, and the column spacer is disposed between the second substrate and the first substrate, and one end of each of the column spacers is placed on each of the second substrate The interior of the wall pattern.

In an embodiment of the invention, the columnar spacers are placed in each of the retaining wall patterns, and the distance between the columnar spacers and the retaining wall pattern is greater than 3 micrometers.

In an embodiment of the invention, the above-mentioned retaining wall pattern comprises a continuous retaining wall pattern or a discontinuous retaining wall pattern.

In an embodiment of the present invention, the liquid crystal display panel of the present invention further includes an electrode layer disposed on the second substrate, and the column spacer is disposed on the electrode layer.

In an embodiment of the invention, the material of the above-mentioned retaining wall pattern is the same as the material of the protruding structure.

The present invention further provides a method of fabricating a liquid crystal display panel. First, a first substrate is provided, and a plurality of gates and a plurality of scan lines electrically connected to the gates are formed on the first substrate. Next, an insulating layer is formed to cover the gates and the scan lines, and a channel layer is formed on the insulating layer above each gate. Then, a source and a drain are formed on each channel layer, and a data line electrically connected to each source is formed, wherein when the channel layer and one of the source and the drain are formed, A plurality of retaining wall patterns are formed on the insulating layer. Then, a plurality of pixel electrodes are formed, and each of the pixel electrodes is electrically connected to one of the drain electrodes. Further, a second substrate is provided, and a plurality of column spacers are formed on the second substrate. Then, the first substrate and the second substrate are assembled, and a liquid crystal layer is filled between the first and second substrates, wherein the column spacers formed on the second substrate are placed in the retaining wall patterns. internal.

In an embodiment of the invention, the above-described retaining wall pattern is formed on an insulating layer above the scanning line.

In an embodiment of the invention, the above-mentioned retaining wall pattern is formed simultaneously when the source and the drain are formed.

In an embodiment of the invention, the above-described retaining wall pattern is formed simultaneously when the channel layer is formed.

In an embodiment of the invention, the above-mentioned retaining wall pattern is formed by an upper layer and a lower layer, and the lower layer is formed simultaneously when the channel layer is formed, and the upper layer is formed simultaneously when the source and the drain are formed.

In one embodiment of the invention, the distance between the columnar spacers placed in each of the retaining wall patterns and the retaining wall pattern is greater than 3 microns.

In an embodiment of the invention, the above-mentioned retaining wall pattern comprises a continuous retaining wall pattern or a discontinuous retaining wall pattern.

In an embodiment of the invention, before forming the column spacers, a color filter array is further formed on the second substrate.

In an embodiment of the invention, before forming the column spacer, an electrode layer is further formed on the second substrate.

The present invention further provides a method of fabricating a liquid crystal display panel, comprising providing a first substrate. Then, a pixel array is formed on the first substrate, wherein each pixel includes a scan line, a data line, a thin film transistor, and a pixel electrode. A color filter array is then formed over the pixel array, and then a plurality of column spacers are formed on the color filter array. In addition, a second substrate is provided. Next, a plurality of protrusion structures and a plurality of barrier patterns are simultaneously formed on the second substrate. Then, the first substrate and the second substrate are assembled, and a liquid crystal layer is filled between the first and second substrates, wherein the column spacer formed on the first substrate is placed inside the retaining wall pattern.

In one embodiment of the invention, the distance between the spacers placed in the retaining wall pattern and the retaining wall pattern is greater than 3 microns.

In an embodiment of the invention, the above-mentioned retaining wall pattern comprises a continuous retaining wall pattern or a discontinuous retaining wall pattern.

In an embodiment of the invention, before forming the protruding structure and the retaining wall structure, an electrode layer is further formed on the second substrate.

The invention puts one end of the columnar spacer into the retaining wall pattern, so that the columnar spacer can be displaced when the liquid crystal display panel is subjected to the lateral external force, thereby avoiding light leakage or blackening of the liquid crystal display panel. phenomenon. In addition, the retaining wall structure of the present invention is integrated into the manufacturing process of the original liquid crystal display panel, so the method of the present invention does not require an additional mask and process steps.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

First embodiment

3 is a top plan view showing a pixel structure of a thin film transistor array substrate of a liquid crystal display panel according to a first embodiment of the present invention, and FIG. 4 is a cross-sectional view of a liquid crystal display panel according to a preferred embodiment of the present invention. This is a cross-sectional view of Figure 3 corresponding to B-B' and C-C'. Referring to FIG. 3 and FIG. 4 together, the manufacturing method of the liquid crystal display panel 200 includes the following steps. First, a first substrate 210 is provided, and a process of a thin film transistor is performed on the first substrate 210. A plurality of gates 222 (only one is drawn) are formed on the substrate 210 and electrically connected to the gate 222. A plurality of scanning lines 230 (only one is drawn in the figure) are formed by, for example, depositing a film layer and then performing an exposure process, a development process, and an etching process. Next, an insulating layer 240 is formed to cover the gate 222 and the scan line 230, which is formed, for example, by deposition. Then, a channel layer 224 is formed on the insulating layer 240 above the gate 222, for example, by depositing a film layer, and then performing a exposure process, a development process, and an etching process using a photomask. Then, a source 226 and a drain 228 are formed on the channel layer 224, and a data line 250 electrically connected to the source 226 is formed, wherein the source 226 and the drain 228 are formed, A plurality of retaining wall patterns 260 are formed on the insulating layer 240. In more detail, after the channel layer 224 is formed, a design of the barrier pattern is additionally added to the mask on which the source and drain patterns are originally designed, and then the exposure process and the development process are performed to form the source 226 and the drain 228. Then, the retaining wall pattern 260 can be formed at the same time. Therefore, the material of the retaining wall pattern 260 is the same material as the source 226 and the drain 228, and its height is also the same as or similar to the source 226 and the drain 228.

As for the contour of the retaining wall pattern 260, the contour may be a continuous pattern. For example, as shown in FIGS. 5A to 5F, the retaining wall pattern 260 may also be a discontinuous pattern, such as shown in FIGS. 5G to 5L.

Then, referring to FIG. 4, a protective layer 274 is formed on the first substrate 210, and a plurality of pixel electrodes 270 (only one is drawn) are formed. The pixel electrodes 270 are connected to each other by a contact window 272. The pole 228 is electrically connected. Then, a second substrate 215 is further provided, and a plurality of column spacers 280 are formed on the second substrate 215. Finally, the first substrate 210 and the second substrate 215 are assembled, and a liquid crystal layer 290 is filled between the first substrate 210 and the second substrate 215, wherein the column spacers 280 formed on the second substrate 215 are disposed. Entering the interior of the retaining wall pattern 260.

Before forming the column spacer 280, a color filter array 216 may be formed on the second substrate 215, for example, by a black matrix and a plurality of color filter patterns. An electrode layer 217 is then formed on the color filter array 216 before the column spacers 280 are formed. However, this embodiment does not limit the second substrate 215 to include the color filter array 216 and the electrode layer 217. In addition, the material of the column spacer 280 is, for example, a photoresist material, and the method of forming the column spacer 280 is, for example, after coating a photoresist material, and then performing an exposure process and a development process on the photoresist material to form a pillar. Shape spacer 280.

After the above steps are completed, the liquid crystal display panel 200 is formed as shown in FIG. 3 and FIG. 4, that is, the scan line 230 and the data line 250 are disposed on the first substrate 210, and the insulating layer 240 is disposed on the scan line 230 and the data. Between lines 250. The thin film transistor 220 is disposed on the first substrate 210, wherein the thin film transistor 220 includes a gate 222, a channel layer 224, and a source 226 and a drain 228, and the gate 222 is electrically connected to the scan line 230, and the source 226 is The data line 250 is electrically connected. The protective layer 274 will cover the thin film transistor 222. The pixel electrode 270 is formed on the protective layer 274 and is electrically connected to the drain 228 of the thin film transistor 220. The retaining wall pattern 260 is located on the insulating layer 240 above the scan line 230. The second substrate 215 is disposed opposite to the first substrate 210, and the liquid crystal layer 290 is located between the first substrate 210 and the second substrate 215. The columnar spacers 280 are disposed between the second substrate 215 and the first substrate 210, and one end of the column spacers 280 is placed inside the retaining wall pattern 260 of the first substrate 210.

In a preferred embodiment, the diameter of the column spacers 280 is, for example, between 10 micrometers (μm) and 46 micrometers (μm), and the distance L between the column spacers 280 and the retaining wall pattern 260 is, for example, More than 3 microns (μm). Since the columnar spacers 280 are disposed in the retaining wall pattern 260, the columnar spacers 280 can be prevented from being displaced when the liquid crystal display panel 200 is subjected to lateral external force, thereby preventing the liquid crystal display panel 200 from being leaked or blackened. . This lateral external force is generated, for example, when the user wipes the liquid crystal display panel 200. In addition, the retaining wall structure of the present invention is integrated into the manufacturing process of the original liquid crystal display panel 200. Therefore, the method of the present invention does not require an additional mask and process steps.

Figure 6 is a cross-sectional view of a liquid crystal display panel in accordance with another embodiment of the present invention. Referring to FIG. 6, the embodiment is similar to the above embodiment, except that after the insulating layer 240 is formed on the first substrate 210, when the channel layer 224 is formed on the insulating layer 240 above the gate 222, A barrier pattern 262 is formed on the insulating layer 240 on the scan line 230. In other words, the retaining wall pattern 262 and the channel layer 224 are formed by the same mask, and therefore the material is the same as the channel layer 224. As for the source 226, the drain 228, the data line 250, the pixel electrode 270, the contact window 272, the protective layer 274, the second substrate 215, the color filter array 216, and the electrode on the first substrate 210 of the liquid crystal display panel 200' The fabrication process and structure of the layer 217 and the column spacer 280 are the same as or similar to those of the above manufacturing method, and are not described herein again.

The retaining wall pattern 262 of the liquid crystal display panel 200' of the present embodiment is still the same as the above-described liquid crystal display panel 200. In other words, the retaining wall structure of the liquid crystal display panel 200' of the present embodiment has the effect of avoiding light leakage or blackening, and the retaining wall structure is integrated into the manufacturing process of manufacturing the liquid crystal display panel 200', so the method of the present invention does not need to be increased. Photomask and process steps.

Second embodiment

Figure 7 is a cross-sectional view showing a liquid crystal display panel in accordance with still another embodiment of the present invention. Referring to FIG. 7, the present embodiment is similar to the first embodiment described above, except that the retaining wall pattern 264 formed may be a structure composed of a lower layer 266 and an upper layer 268. The liquid crystal display panel 200" is formed by forming a lower layer 266 of the retaining wall pattern 264 while forming the channel layer 224 on the insulating layer 240 above the gate 222 after forming the insulating layer 240. Therefore, the material of the lower layer 266 may be The same material as the channel layer 224. Next, when the source 226 and the drain 228 are formed on the channel layer 224, the upper layer 268 of the barrier pattern 264 is simultaneously formed. Therefore, the material of the upper layer 268 can be the same as the source 226 and the drain 228. Similarly, the distance L between the column spacers 280 and the retaining wall pattern 264 is, for example, greater than 3 micrometers (μm), and the color filter array 216, the electrode layer 217, and the column spacers 280 on the second substrate 215. The production process and structure are the same as or similar to the above production methods, and will not be described here.

Referring to FIG. 7 in more detail, the retaining wall pattern 264 of the present embodiment is a structure composed of an upper layer 268 and a lower layer 266, which is different from the single layer structure disclosed in the first embodiment (the retaining wall pattern 260, 262).

Third embodiment

Figure 8 is a cross-sectional view showing a liquid crystal display panel of a third embodiment of the present invention. Referring to FIG. 8 , the liquid crystal display panel 800 includes a first substrate 810 , a pixel array 820 formed on the first substrate 810 , and a color filter array 830 . Each pixel of the pixel array 820 includes a scan line. A data line, a thin film transistor, and a pixel electrode (not shown), the pixel structure can be any known pixel structure. The color filter array 830 is disposed above the pixel array 820, and the column spacers 860 are disposed above the color filter array 830. In addition, the second substrate 815 is disposed opposite to the first substrate 810 , and the liquid crystal layer 870 is disposed between the first substrate 810 and the second substrate 815 . In particular, a plurality of protrusion structures 840 are formed on the second substrate 815 to achieve a wide viewing angle of the liquid crystal display panel 800. In particular, a plurality of barrier patterns 850 are disposed on the second substrate 815. One end of the column spacer 860 is placed in the retaining wall pattern 850, wherein the material of the retaining wall pattern 850 is the same as the material of the protruding structure 840. In another embodiment, the protrusion structure 840 at a specific location can also be used directly as a retaining wall. In an embodiment, the second substrate 815 of the liquid crystal display panel 800 further includes an electrode layer 880 disposed thereon, and the protruding structure 840 and the retaining wall structure 850 are disposed on the electrode layer 880.

The method of manufacturing the liquid crystal display panel of this embodiment includes providing a first substrate 810. Then, a pixel array 820 is formed on the first substrate 810, wherein each pixel includes a scan line, a data line, a thin film transistor, and a pixel electrode. A color filter array 830 is then formed over the pixel array 820, and then a plurality of column spacers 860 are formed on the color filter array 830. In addition, a second substrate 815 is provided. Next, a plurality of protrusion structures 840 and a plurality of barrier patterns 850 are simultaneously formed on the second substrate 815. Then, the first substrate 810 and the second substrate 815 are assembled, and a liquid crystal layer 870 is filled between the first and second substrates 810 and 815, wherein the column spacers 860 formed on the first substrate 810 are disposed. Enters the interior of the retaining wall pattern 850.

In more detail, in this embodiment, the pixel array 820 and the color filter array 830 are disposed on the first substrate 810, that is, the so-called color filter array 830 is on the color filter on array (COA). The structure of the columnar spacers 860 is disposed on the color filter array 830, and the liquid crystal display panel of the embodiment has a design of the protrusion structure 840, and thus can be referred to as a multi-domain vertical alignment type liquid crystal display panel ( Multi-domain vertically alignment, MVA-LCD).

It is worth mentioning that the retaining wall pattern 850 of the liquid crystal display panel 800 also belongs to a single layer structure. Similarly, the retaining wall pattern 850 can be a continuous pattern or a discontinuous pattern, as shown in Figures 5A-5L. While the column spacer 860 is disposed in the retaining wall pattern 850, the distance L between the column spacer 860 and the retaining wall pattern 850 may be greater than 3 micrometers (μm). In the same manner, when the liquid crystal display panel 800 is subjected to lateral stress, the first substrate 810 and the second substrate 815 are caused to be displaced, which causes the light leakage or blackening effect caused by the conventional liquid crystal display panel 100. Further, the contrast and luminance uniformity of the liquid crystal display panel 800 can be maintained. In addition, the retaining wall structure of the embodiment is integrated into the manufacturing process of the original wide viewing angle liquid crystal display panel. Therefore, the method of the embodiment does not need to add a photomask and a process step.

In summary, the present invention is placed in the retaining wall pattern by one end of the column spacer, so that the columnar spacer can be prevented from being displaced when the liquid crystal display panel is subjected to lateral external force, so that the liquid crystal display panel Light leakage or blackening occurs, thereby maintaining the contrast and luminance uniformity of the liquid crystal display panel. In addition, the retaining wall structure of the present invention is integrated into the manufacturing process of the original liquid crystal display panel whether the single layer structure or the upper and lower layer structures are integrated. Therefore, the method of the present invention does not require an additional mask and process steps.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

100, 200, 200', 200", 800... liquid crystal display panels

110, 210, 810. . . First substrate

120, 230. . . Scanning line

130, 250. . . Data line

140, 240. . . Insulation

150, 220. . . Thin film transistor

152, 222. . . Gate

154, 224. . . Channel layer

156, 226. . . Source

158, 228. . . Bungee

160, 270. . . Pixel electrode

162, 164, 272. . . Contact window

166. . . Capacitor

170, 215, 815. . . Second substrate

180, 290, 870. . . Liquid crystal layer

190, 192, 280, 860. . . Columnar spacer

216, 830. . . Color filter array

217, 880. . . Electrode layer

260, 262, 264, 850. . . Retaining wall pattern

266. . . Lower layer

268. . . upper layer

274. . . The protective layer

820. . . Pixel array

840. . . Protrusion structure

1 is a top plan view of a thin film transistor array substrate of a conventional liquid crystal display panel.

Fig. 2 is a cross-sectional view showing a conventional liquid crystal display panel, which corresponds to a cross-sectional view taken along line A-A' of Fig. 1.

3 is a top plan view showing one of the pixel structures of the thin film transistor array substrate of the liquid crystal display panel of the first embodiment of the present invention.

Figure 4 is a cross-sectional view of a liquid crystal display panel in accordance with a preferred embodiment of the present invention, which is a cross-sectional view of Figure 3 corresponding to B-B' and C-C'.

5A to 5F are retaining wall patterns of the continuous pattern of the present invention.

5G to 5L are retaining wall patterns of the discontinuous pattern of the present invention.

Figure 6 is a cross-sectional view of a liquid crystal display panel in accordance with another embodiment of the present invention.

Figure 7 is a cross-sectional view showing a liquid crystal display panel in accordance with still another embodiment of the present invention.

Figure 8 is a cross-sectional view showing a liquid crystal display panel of a third embodiment of the present invention.

200. . . LCD panel

210. . . First substrate

215. . . Second substrate

216. . . Color filter array

217. . . Electrode layer

220. . . Thin film transistor

222. . . Gate

224. . . Channel layer

226. . . Source

228. . . Bungee

230. . . Scanning line

240. . . Insulation

260. . . Retaining wall pattern

270. . . Pixel electrode

272. . . Contact window

274. . . The protective layer

280. . . Columnar spacer

290. . . Liquid crystal layer

L. . . distance

Claims (18)

A liquid crystal display panel includes: a first substrate; a plurality of scan lines and a plurality of data lines disposed on the first substrate; an insulating layer disposed between the scan lines and the data lines; a thin film transistor disposed on the first substrate, wherein each of the thin film transistors includes a gate, a channel layer, and a source and a drain, and the gate is electrically connected to one of the scan lines The source is electrically connected to one of the data lines; the plurality of pixel electrodes, each of the pixel electrodes being electrically connected to the drain of one of the thin film transistors; and the plurality of barrier patterns, Located on the insulating layer, wherein each of the retaining wall patterns has a closed annular shape; a second substrate disposed opposite to the first substrate; a liquid crystal layer between the first and second substrates; and a plurality of pillars a spacer is disposed between the second substrate and the first substrate, and one end of each of the column spacers is disposed inside each of the plurality of barrier patterns on the first substrate, and the spacer The end of the columnar spacer is surrounded by the retaining wall pattern and the columnar gap Do not overlap the retaining wall pattern, wherein the retaining wall patterns are located on the insulating layer above the scan lines, and the distance between the column spacers and the retaining wall patterns in each of the retaining wall patterns More than 3 microns. The liquid crystal display panel of claim 1, wherein the retaining wall pattern comprises a lower layer and an upper layer, wherein the material of the lower layer Same as the material of the channel layer, the material of the upper layer is the same as the material of the source and the drain. The liquid crystal display panel of claim 1, wherein the retaining wall patterns comprise a continuous retaining wall pattern or a discontinuous retaining wall pattern. The liquid crystal display panel of claim 1, further comprising a color filter array disposed on the second substrate, wherein the column spacers are disposed on the color filter array. The liquid crystal display panel of claim 1, further comprising an electrode layer disposed on the second substrate, wherein the column spacers are disposed on the electrode layer. A liquid crystal display panel includes: a first substrate; a pixel array disposed on the first substrate, wherein each of the pixels comprises a scan line, a data line, a thin film transistor, and a pixel electrode a color filter array disposed above the pixel array; a second substrate disposed opposite the first substrate; a plurality of protrusion structures disposed on the second substrate; a plurality of retaining wall patterns, Disposed on the second substrate, wherein each of the retaining wall patterns has a closed annular shape; a liquid crystal layer between the first and second substrates; and a plurality of columnar spacers disposed on the second substrate and the first Between a substrate, and one end of each of the column spacers is placed on the second substrate Inside each of the retaining wall patterns, and the end of each of the column spacers is surrounded by one of the retaining wall patterns, wherein the column spacers disposed in each of the retaining wall patterns are The distance between the retaining wall patterns is greater than 3 microns. The liquid crystal display panel of claim 6, wherein the retaining wall patterns comprise a continuous retaining wall pattern or a discontinuous retaining wall pattern. The liquid crystal display panel of claim 6, further comprising an electrode layer disposed on the second substrate, and the protruding structures and the retaining wall structures are disposed on the electrode layer. The liquid crystal display panel of claim 6, wherein the material of the retaining wall pattern is the same as the material of the protruding structures. A method for manufacturing a liquid crystal display panel includes: providing a first substrate; forming a plurality of gates on the first substrate; and a plurality of scan lines electrically connected to the gates; forming an insulating layer covering the plurality of a gate electrode and the scan lines; a channel layer is formed on the insulating layer above each of the gate electrodes; a source and a drain are formed on each of the channel layers, and are formed a data line electrically connected to the source, wherein when the channel layer and at least one of the source and the drain are formed, a plurality of retaining wall patterns are formed on the insulating layer, wherein each of the retaining wall patterns is closed Forming a plurality of pixel electrodes, each of the pixel electrodes being electrically connected to one of the plurality of electrodes; providing a second substrate; Forming a plurality of columnar spacers on the second substrate; and forming the first substrate and the second substrate, and filling a liquid crystal layer between the first and second substrates, wherein the The columnar spacers on the two substrates are placed inside the retaining wall patterns, and the end of the column spacers is surrounded by the retaining wall pattern and the column spacers do not overlap the retaining wall pattern The distance between the columnar spacers placed in each of the retaining wall patterns and the retaining wall pattern is greater than 3 micrometers. The method of manufacturing a liquid crystal display panel according to claim 10, wherein the barrier patterns are formed on the insulating layer above the scan lines. The method for manufacturing a liquid crystal display panel according to claim 10, wherein the retaining wall patterns are formed by an upper layer and a lower layer, and the lower layer is formed simultaneously when the channel layer is formed, the upper layer being The source is formed simultaneously with the drain. The method of manufacturing a liquid crystal display panel according to claim 10, wherein the retaining wall patterns comprise a continuous retaining wall pattern or a discontinuous retaining wall pattern. The method of manufacturing a liquid crystal display panel according to claim 10, further comprising forming a color filter array on the second substrate before forming the column spacers. The method of manufacturing a liquid crystal display panel according to claim 10, further comprising forming an electrode layer on the second substrate before forming the column spacers. A method of manufacturing a liquid crystal display panel, comprising: Providing a first substrate; forming a pixel array on the first substrate, wherein each of the pixels comprises a scan line, a data line, a thin film transistor, and a pixel electrode; and the pixel array Forming a color filter array thereon; forming a plurality of column spacers on the color filter array; providing a second substrate; and forming a plurality of protrusion structures and a plurality of barrier patterns on the second substrate, wherein each a pattern of the retaining wall is closed; and the first substrate and the second substrate are assembled, and a liquid crystal layer is filled between the first and second substrates, wherein the first substrate is formed on the first substrate Columnar spacers are placed inside the retaining wall patterns, and the end of each of the column spacers is surrounded by one of the retaining wall patterns, wherein the columnar shape is placed in each of the retaining wall patterns The distance between the spacer and the retaining wall pattern is greater than 3 microns. The method for manufacturing a liquid crystal display panel according to claim 16, wherein the retaining wall patterns comprise a continuous retaining wall pattern or a discontinuous retaining wall pattern. The method for manufacturing a liquid crystal display panel according to claim 16, wherein before forming the protruding structures and the retaining wall structures, an electrode layer is further formed on the second substrate.