TWI657272B - Color filter plate and display panel having the same - Google Patents

Abstract

The invention provides a color filter plate and a display panel with a color filter plate. The color filter plate comprises a substrate body, a black matrix layer, a first color layer, a second color layer, a third color layer, a protective layer, a blocking structure and a cutting pair. Bit mark. The substrate body has a display area and a peripheral area, the black matrix layer is provided with the substrate body, the first color layer is located in the display area and the peripheral area, the second color layer and the third color layer are respectively located in the display area, and the protection layer covers the black matrix located in the display area. a layer, a first color layer, a second color layer and a third color layer, the blocking structure is disposed in the peripheral region, the blocking structure comprises a first layer structure and a second layer structure, and the first layer structure is located on the substrate body and the second layer structure Between, the blocking structure is stepped, and the cutting alignment mark is disposed on the surface of the blocking structure.

Description

Color filter and display including the color filter panel

The present invention relates to a display panel, and more particularly to a color filter of a display panel.

A conventional liquid crystal display panel is composed of a color filter substrate, a thin film transistor array substrate (TFT Array Substrate), and a liquid crystal layer disposed between the two substrates.

The manufacturing process of the liquid crystal display panel includes the steps of fabricating a thin film transistor array substrate, fabricating a color filter substrate, masking coating, liquid crystal injection, alignment of a thin film transistor array substrate and a color filter substrate, and curing of a sealant. Wherein, in order to cover the boundary groove (PL Trench) on the color filter substrate, the coating center of the plastic frame moves toward the edge, thus causing the color filter substrate and the thin film transistor array substrate during the coating process. When the phase is pressed, it is very likely to cause overflow of the sealant, thereby blocking the cutting alignment mark on the color filter substrate. At this time, the overflow of the sealant will affect the cutting precision when the color filter substrate is cut. And have the problem that the overflow plastic frame bait is not easily peeled off. question.

The color filter of the embodiment of the present invention comprises: a substrate body having a display area and a peripheral area; a black matrix layer, a substrate body; a first color layer located in the display area and the peripheral area; and a second color layer located in the display area; The third color layer is located in the display area; the protective layer covers the black matrix layer, the first color layer, the second color layer and the third color layer located in the display area; the blocking structure is disposed in the peripheral area, and the blocking structure comprises the first a layer structure and a second layer structure, and the first layer structure is located between the substrate body and the second layer structure, wherein the barrier structure is stepped; and the dicing mark is cut and disposed on the surface of the barrier structure.

In the color filter of the embodiment of the present invention, the material of the first layer structure is the same as that of the black matrix layer, and the material of the second layer structure is the same as that of the first color layer.

In the color filter of the embodiment of the invention, the barrier structure further comprises a third layer structure, the second layer structure is located between the first layer structure and the third layer structure, and the material of the third layer structure is the same as the second color layer .

In the color filter of the embodiment of the invention, the barrier structure further comprises a fourth layer structure, the third layer structure is between the second layer structure and the fourth layer structure, and the material of the fourth layer structure and the third color layer the same.

In the color filter of the embodiment of the invention, the barrier structure further comprises a fifth layer structure, the fourth layer structure is located between the third layer structure and the fifth layer structure, and the material of the fifth layer structure is the same as the protective layer.

In the color filter of the embodiment of the present invention, the barrier structure is high The degree is from 5 μm to 10 μm.

In the color filter of the embodiment of the invention, the blocking structure is disposed at a corner of the substrate body.

In the color filter of the embodiment of the present invention, the area of the first layer structure is larger than the area of the second layer structure.

In the color filter of the embodiment of the present invention, each layer of the barrier structure has a right angle structure.

In the color filter of the embodiment of the present invention, each layer of the blocking structure includes: a first blocking structure portion extending along the first direction; and a second blocking structure portion extending along the second direction; wherein the first blocking structure portion Intersecting with the second blocking structure portion and forming an anti-overflow corner.

In the color filter of the embodiment of the invention, the first direction is perpendicular to the second direction.

The display panel of the embodiment of the present invention comprises: a color filter, which is the above-mentioned color filter; a thin film transistor array substrate; and a sealant, which is disposed between the color filter and the thin film transistor array substrate, and the display area and the peripheral area are The frame glue is the boundary.

The invention is described in detail below with reference to the accompanying drawings and specific embodiments.

10‧‧‧ display panel

100‧‧‧Color filter

110‧‧‧Substrate body

120‧‧‧Black matrix layer

130‧‧‧First color layer

140‧‧‧Second color layer

150‧‧‧ third color layer

160‧‧‧Protective layer

170‧‧‧ cutting alignment mark

110a‧‧‧ display area

110b‧‧‧ surrounding area

180, 180', 180'', 180'' ‧ ‧ ‧ blocking structure

181‧‧‧ first layer structure

182‧‧‧Second layer structure

183‧‧‧Layer 3 structure

184‧‧‧Fourth structure

185‧‧‧5th floor structure

180a‧‧‧First barrier structure

180b‧‧‧Second Barrier Structure

180c‧‧‧Anti-overflow corner

200‧‧‧ Thin film transistor array substrate

210‧‧‧Array substrate body

220‧‧‧film transistor layer

300‧‧‧Box glue

A, B‧‧‧ position

D1‧‧‧ first direction

D2‧‧‧ second direction

S‧‧‧ surface

D‧‧‧thickness

SP‧‧‧step terrain

1 is a cross-sectional view of a display panel in accordance with an embodiment of the present invention.

2 is a schematic view showing the structure of a color filter before being cut according to an embodiment of the present invention; Figure.

FIG. 3 is a schematic structural view of a color filter after being cut according to an embodiment of the present invention.

4a is a schematic perspective view showing a first embodiment of a barrier structure and a dicing mark of a color filter according to an embodiment of the present invention.

4b is a plan view of a first embodiment of a barrier structure and a dicing alignment mark of a color filter according to an embodiment of the present invention.

FIG. 5a is a schematic perspective structural view of a second embodiment of a barrier structure and a dicing mark of a color filter according to an embodiment of the present invention.

Figure 5b is a plan view of a second embodiment of a barrier structure and a cleavage alignment mark of a color filter according to an embodiment of the present invention.

6a is a schematic perspective view showing a third embodiment of a barrier structure and a dicing mark of a color filter according to an embodiment of the present invention.

Fig. 6b is a plan view showing a third embodiment of a barrier structure and a dicing mark of a color filter according to an embodiment of the present invention.

FIG. 7a is a schematic perspective structural view of a fourth embodiment of a barrier structure and a dicing mark of a color filter according to an embodiment of the present invention.

Fig. 7b is a plan view showing a fourth embodiment of a barrier structure and a dicing mark of a color filter according to an embodiment of the present invention.

The embodiments of the present invention are disclosed in the following drawings, and the details of the invention are described in the following description. However, it should be understood that these practical details are not intended to limit the invention. Also That is to say, in some embodiments of the present invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

In the following, various embodiments of the invention are disclosed in the drawings. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary.

In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings. Also, the same component symbols may be regarded as the corresponding components in the different drawings unless otherwise indicated. The drawings are drawn to clearly illustrate the connection between the various elements in the embodiments, and are not intended to depict the actual dimensions of the elements.

1 to FIG. 3, FIG. 1 is a cross-sectional view of a display panel of the present invention, and FIGS. 2 and 3 are schematic structural views of the color filter before and after the color filter is cut, respectively.

As shown in FIG. 1 , the display panel 10 of the embodiment of the present invention includes a color filter 100 , a thin film transistor array substrate 200 , and a sealant 300 disposed between the color filter 100 and the thin film transistor array substrate 200 . The thin film transistor array substrate 200 includes an array substrate body 210 and a thin film transistor layer 220 attached to the array substrate body 210.

Before cutting, as shown in FIG. 2, a plurality of color filters 100 are formed on the mother substrate. Referring to FIG. 1 again, the color filter 100 includes a substrate body 110, a black matrix layer 120, a first color layer 130, a second color layer 140, and a third color. Layer 150, protective layer 160, and dicing alignment mark 170 (see FIG. 2). When cutting, the cutting alignment mark 170 is aligned to ensure the cutting accuracy. By cutting the alignment mark 170 in alignment, after cutting along the cutting line (dashed line in Fig. 2) shown in Fig. 2, a single color filter 100 as shown in Fig. 3 is formed.

The black matrix layer 120 is disposed on the substrate body 110. The substrate body 110 has a display area 110a and a peripheral area 110b (as shown in FIG. 3). In this embodiment, the first color layer 130 is located in the display area 110a and the peripheral area 110b of the substrate body 110, and the second color layer 140 and the third color layer 150 are respectively located in the display area 110a of the substrate body 110, and the protective layer 160 is covered. The black matrix layer 120, the first color layer 130, the second color layer 140, and the third color layer 150 are located on the display region 110a of the substrate body 110. The dicing mark 170 is located in the peripheral region 110b of the substrate body 110.

In this embodiment, the first color layer 130, the second color layer 140, and the third color layer 150 are respectively a blue color layer, a red color layer, or a green color layer, but the present invention is not limited thereto, and may be displayed according to different colors. Use different colors to match the needs.

As shown in FIG. 3, the color filter 100 of the embodiment of the present invention further includes a blocking structure 180 disposed on the peripheral region 110b of the substrate body 110. 4a and 4b, FIG. 4a and FIG. 4b are structural views of a first embodiment of a barrier structure of a color filter of the present invention. The barrier structure 180 includes a first layer structure 181 and a second layer structure 182, and the first layer structure 181 is located between the peripheral region 110b of the substrate body 110 and the second layer structure 182. In other words, the first layer structure 181 is disposed. Above the peripheral region 110b of the substrate body 110, the second layer structure 182 is stacked on top of the first layer structure 181. In this embodiment, the first layer structure The barrier structure 180 composed of 181 and the second layer structure 182 has a stepped shape having a certain thickness.

In detail, since the first layer structure 181 is disposed on the peripheral region 110b of the substrate body 110, the second layer structure 182 is stacked on the first layer structure 181, that is, each layer is not in the same horizontal plane, and thus the first layer The barrier structure 180 composed of the layer structure 181 and the second layer structure 182 has a certain height difference with respect to the surface S of the peripheral region 110b of the substrate body 110, thereby having a "certain thickness". In addition, the first layer structure 181 and the second layer structure 182 are different in area, thereby forming a "stepped shape".

Referring to FIGS. 4a and 4b, the dicing mark 170 is disposed on the surface of the barrier structure 180, that is, the dicing mark 170 is disposed on the second layer structure 182 of the barrier structure 180.

As shown in FIG. 1 and FIG. 2, after the plastic frame 300 is coated, the plastic frame 300 becomes a boundary between the display area 110a of the substrate body 110 and the peripheral area 110b. Since the overflow phenomenon of the plastic frame 300 occurs at the corner of the plastic frame 300 (for example, at A in FIG. 2), the cutting alignment mark 170 and the blocking structure 180 are also disposed on the substrate body of the color filter substrate 100. The corner of 110 (such as B in Figure 2). Since the blocking structure 180 has a stepped shape with a certain thickness, the blocking structure 180 can avoid the overflow of the plastic frame 300 to shield the cutting alignment mark 170, thereby ensuring the cutting precision during cutting, which will help to increase the yield of the display panel. And the subsequent processing of overflowing the colloid is avoided.

Specifically, in conjunction with FIG. 2, FIG. 3, FIG. 4a and FIG. 4b, the barrier structure 180 composed of the first layer structure 181 and the second layer structure 182 not only has a certain thickness D, but also blocks the plastic frame 300 at the press-fit A. Overflow, and the first layer structure The 181 and the second layer structure 182 form a stepped topography SP due to the difference in area. The plastic frame 300 is easily stopped at the stepped terrain SP or is accommodated at the stepped top surface SP during pressing, thereby further preventing the plastic frame 300 from overflowing.

Preferably, the barrier structure 180 has a height of 5 μm to 10 μm so as to reach a certain thickness and can function to prevent the plastic frame 300 from overflowing. In detail, the height of the top surface of the matrix structure 180 from the surface S of the substrate body 110 is 5 μm to 10 μm, that is, the height of the cut alignment mark 170 from the surface S of the substrate body 110 (as shown in FIG. 1) is The effect is better at 5 μm to 10 μm.

In the first embodiment, the material of the first layer structure 181 of the barrier structure 180 is the same as that of the black matrix layer 120, and the material of the second layer structure 182 is the same as that of the first color layer 130.

That is, when the color filter 100 is fabricated, when the black matrix layer 120 is formed on the display region 110a of the substrate body 110, the black matrix layer 120 is simultaneously formed in the peripheral region 110b of the substrate body 110 to form the first layer structure 181 of the barrier structure 180. . When the color filter 100 forms the first color layer 130 in the display region 110a of the substrate body 110, the first color layer 130 is simultaneously formed on the first layer structure 181 of the barrier structure 180 in the peripheral region 110b of the substrate body 110. A two-layer structure 182. As such, in the first embodiment, the barrier structure 180 is formed by stacking two layers of structures.

As shown in FIGS. 5a and 5b, FIGS. 5a and 5b are structural views of a second embodiment of the barrier structure of the color filter of the present invention. In the second embodiment, the barrier structure 180' includes a third layer structure 183 in addition to the first layer structure 181 and the second layer structure 182, and the second layer structure 182 is located in the first layer structure 181. Between the third layer structure 183. In the present embodiment, the material of the first layer structure 181 of the barrier structure 180' is the same as that of the black matrix layer 120, the material of the second layer structure 182 is the same as that of the first color layer 130, and the material of the third layer structure 183 is the second The color layer 140 is the same.

That is, when the color filter 100 is fabricated, when the black matrix layer 120 is formed on the display region 110a of the substrate body 110, the black matrix layer 120 is simultaneously formed in the peripheral region 110b of the substrate body 110 to form the first layer structure of the barrier structure 180'. 181. When the color filter 100 forms the first color layer 130 in the display region 110a of the substrate body 110, the first color layer 130 is simultaneously formed on the first layer structure 181 of the barrier structure 180' at the peripheral region 110b of the substrate body 110. The second layer structure 182. When the color filter 100 forms the second color layer 140 in the display region 110a of the substrate body 110, the second color layer 140 is simultaneously formed on the second layer structure 182 of the barrier structure 180' in the peripheral region 110b of the substrate body 110. The third layer structure 183. As such, in the second embodiment, the barrier structure 180' is formed by a stack of three layers.

As shown in FIGS. 6a and 6b, FIGS. 6a and 6b are structural views of a third embodiment of the barrier structure of the color filter of the present invention. In the third embodiment, the barrier structure 180" includes a fourth layer structure 184 in addition to the first layer structure 181, the second layer structure 182, and the third layer structure 183, and the third layer structure 183 is located in the second layer structure. Between the 182 and the fourth layer structure 184. In the present embodiment, the material of the first layer structure 181 of the barrier structure 180" is the same as that of the black matrix layer 120, and the material of the second layer structure 182 is the same as the first color layer 130. The material of the third layer structure 183 is the same as the second color layer 140, and the material of the fourth layer structure 184 is the same as the third color layer 150.

That is, when the color filter 100 is fabricated, when the black matrix layer 120 is formed on the display region 110a of the substrate body 110, the black matrix layer 120 simultaneously forms the first layer structure of the barrier structure 180'' in the peripheral region 110b of the substrate body 110. 181. When the color filter 100 forms the first color layer 130 in the display region 110a of the substrate body 110, the first color layer 130 is simultaneously formed on the first layer structure 181 of the barrier structure 180'' in the peripheral region 110b of the substrate body 110. The second layer structure 182. When the color filter 100 forms the second color layer 140 in the display region 110a of the substrate body 110, the second color layer 140 is simultaneously formed on the second layer structure 182 of the barrier structure 180'' in the peripheral region 110b of the substrate body 110. The third layer structure 183. When the color filter 100 forms the third color layer 150 in the display region 110a of the substrate body 110, the third color layer 150 is simultaneously formed on the third layer structure 183 of the barrier structure 180'' in the peripheral region 110b of the substrate body 110. The fourth layer structure 184. As such, in the third embodiment, the barrier structure 180'' is formed by a stack of four layers.

As shown in FIG. 3, FIG. 7a and FIG. 7b, FIG. 7a and FIG. 7b are structural views of a fourth embodiment of the blocking structure of the color filter of the present invention, and FIG. 3 shows that the fourth embodiment of the blocking structure is applied to color. The top view of the filter. In the fourth embodiment, the blocking structure 180"" includes a first layer structure 181, a second layer structure 182, a third layer structure 183, and a fourth layer structure 184, and further includes a fifth layer structure 185, a fourth The layer structure 184 is located between the third layer structure 183 and the fifth layer structure 185. In the present embodiment, the material of the first layer structure 181 of the barrier structure 180"' is the same as that of the black matrix layer 120, the material of the second layer structure 182 is the same as that of the first color layer 130, and the material of the third layer structure 183 is The second color layer 140 is the same, the material of the fourth layer structure 184 is the same as the third color layer 150, and the fifth layer is knotted. The material of the structure 185 is the same as the protective layer 160.

That is, when the color filter 100 is fabricated, when the black matrix layer 120 is formed on the display region 110a of the substrate body 110, the black matrix layer 120 is simultaneously formed in the peripheral region 110b of the substrate body 110 to form the first structure of the barrier structure 180"". Layer structure 181. When the color filter 100 forms the first color layer 130 in the display region 110a of the substrate body 110, the first color layer 130 is simultaneously formed in the peripheral region 110b of the substrate body 110 to form a first layer structure 181 stacked on the barrier structure 180"'. The second layer structure 182. When the color filter 100 forms the second color layer 140 in the display region 110a of the substrate body 110, the second color layer 140 is simultaneously formed in the peripheral region 110b of the substrate body 110 to form a second layer structure 182 stacked on the barrier structure 180"". The third layer structure 183. When the color filter 100 forms the third color layer 150 in the display region 110a of the substrate body 110, the third color layer 150 is simultaneously formed in the peripheral region 110b of the substrate body 110 to form a third layer structure 183 stacked on the barrier structure 180"'. The fourth layer structure 184. The color filter 100 forms the protective layer 160 in the display region 110a of the substrate body 110 while simultaneously forming the protective layer 160 on the peripheral layer 110b of the substrate body 110 to form a fifth layer stacked on the fourth layer structure 184 of the barrier structure 180"'. Layer structure 185. As such, in the fourth embodiment, the barrier structure 180''' is formed by stacking a five-layer structure.

In the above embodiments, the structure of each layer structure may be the same. Preferably, the layers of the barrier structure 180 (180', 180', 180", 180"') are in a near and far order from the substrate body 110, i.e., according to the first layer structure 181, the second layer structure 182. The order of the third layer structure 183, the fourth layer structure 184, and the fifth layer structure 185, the cross-sectional area of the previous layer structure is larger than the latter layer The cross-sectional area of the structure. It can also be said that the orthographic projection of the latter layer structure is completely within the cross section of the previous layer structure.

In each of the above embodiments, the dicing mark 170 is located on the layer structure of the blocking structure 180 that is furthest from the substrate body 110. The dicing mark 170 may be a groove structure or a convex structure formed on the surface of the barrier structure 180, or may be a planar structure having a marking function. Since the color filter 100 is at a right angle, the cut alignment mark 170 disposed at the corner is also a right angle (the cross shape is formed by splicing with the adjacent cut alignment mark before cutting).

In each of the above embodiments, each layer of the barrier structure 180 has a right angle structure. In other words, the barrier structure 180 includes a first barrier structure portion 180a and a second barrier structure portion 180b, as shown in FIG. 3 and FIG. 7a and FIG. 7b. For example, the first blocking structure portion 180a extends along a first direction D1, and the second blocking structure portion 180b extends along a second direction D2. Wherein, the first blocking structure portion 180a and the second blocking structure portion 180b intersect and form an overflow preventing corner 180c. The first direction D1 is substantially perpendicular to the second direction D2. The overflow preventing corner 180c is located at the overflow position A of the plastic frame 300, and can effectively block the plastic frame 300 from overflowing and blocking the cutting alignment mark 170.

There are a variety of other embodiments of the present invention, and various changes and modifications can be made in accordance with the present invention without departing from the spirit and scope of the invention. The modifications are intended to fall within the scope of the claims of the present invention.

Claims (11)

A color filter comprising: a substrate body having a display area and a peripheral area; a black matrix layer, the substrate body; a first color layer located in the display area and the peripheral area; and a second color layer, Located in the display area; a third color layer is located in the display area; a protective layer covering the black matrix layer, the first color layer, the second color layer and the third color layer located in the display area; a blocking structure is disposed in the peripheral region, the blocking structure includes a first layer structure and a second layer structure, and the first layer structure is located between the substrate body and the second layer structure, wherein the blocking structure is Stepped, and the height of the barrier structure is 5 μm to 10 μm; and a cut alignment mark is disposed on the surface of the barrier structure. The color filter of claim 1, wherein the material of the first layer structure is the same as the black matrix layer, and the material of the second layer structure is the same as the first color layer. The color filter of claim 1, wherein the barrier structure further comprises a third layer structure, the second layer structure is located between the first layer structure and the third layer structure, and the third layer structure The material is the same as the second color layer. The color filter of claim 3, wherein the blocking The structure further includes a fourth layer structure between the second layer structure and the fourth layer structure, and the material of the fourth layer structure is the same as the third color layer. The color filter of claim 4, wherein the barrier structure further comprises a fifth layer structure, the fourth layer structure is located between the third layer structure and the fifth layer structure, and the fifth layer structure The material is the same as the protective layer. The color filter of claim 1, wherein the blocking structure is disposed at a corner of the substrate body. The color filter of claim 1, wherein an area of the first layer structure is larger than an area of the second layer structure. The color filter of claim 1, wherein each layer of the barrier structure has a right angle structure. The color filter according to any one of claims 1 to 8, wherein each layer of the barrier structure comprises: a first blocking structure extending along a first direction; and a second blocking structure along a first The two-direction extension; wherein the first barrier structure portion and the second barrier structure portion intersect and form an anti-overflow corner. The color filter of claim 9, wherein the first direction is perpendicular to the second direction. A display panel comprising: a color filter, the color filter of any one of claims 1 to 10; a thin film transistor array substrate; and a sealant disposed on the color filter and the thin film transistor array substrate And the display area and the peripheral area are demarcated by the sealant.