TWI416175B - Color filter substrate and its liquid crystal display panel - Google Patents

Abstract

The present invention provides a color filter substrate and its liquid crystal display panel, in which patterned light shields are formed on a transparent substrate. A plurality of pixel pigment accommodation vessels are formed between the patterned light shields, and a plurality of recessed slots are formed on the patterned light shields. When pigment is fully filled into the pixel pigment accommodation vessels in an ink-jet manner for manufacturing the color filter substrate, the surplus pigment is accommodated in the recessed slots to prevent the pigment from overflowing, which may result in color mixing phenomenon. In addition, opaque metal conductors corresponding to the recessed slots are formed on a transistor substrate, and the width of the recessed slot is smaller than that of the opaque metal conductor to avoid generating light leakage.

Description

Color filter substrate and liquid crystal display panel thereof

The present invention relates to a color filter substrate structure, and more particularly to a color filter substrate structure that can be applied to a liquid crystal display panel to prevent color mixing.

The liquid crystal display panel is divided into an upper plate and a lower plate, wherein the upper plate is a color filter substrate (Color Filter). The conventionally manufactured color filter substrate adopts a pigment dispersion method, and the pigment is mixed with a resin and a dispersant to form a photoresist, and then coated on the surface of the transparent substrate, and then subjected to heating, mask exposure and development processes to complete red, green and blue (RGB). ) and other color layers. Since the method requires a mask and the manufacturing process is cumbersome, the current color filter substrate is manufactured by an inkjet (lnk-jet) process, and the color filter substrate manufactured by the inkjet process needs to be in a black matrix. A retaining wall is made on the Block Matrix to prevent color mixing between the three colors (RGB) on the substrate.

The first figure shows the structure of a conventional color filter substrate. Please refer to the enlarged view of the block structure of the conventional color filter substrate E shown in the second figure and the conventional color filter shown in the third figure. A cross-sectional view of the structure of the sheet substrate E along the line e-e'. As shown, the color filter substrate 20 includes a transparent substrate 22 on which a patterned light-shielding body and a plurality of colorant receiving grooves 26 are formed, wherein the patterned light-shielding body comprises a black matrix 24 or is included. The black matrix 24 and the retaining wall (not shown) on the black matrix 24 have two aspects. When the ink jet process fills the color material to the color material storage tank 26, since the ink jet is performed in a strip manner, the patterning shading between the ink jets and the adjacent color material storage grooves 26 is performed. When the body is in the body, the color material will overflow, which will increase the probability of color mixing.

In view of the above, the present invention is directed to the above-mentioned problems, and proposes a color filter substrate and a liquid crystal display panel thereof to prevent the inkjet process from producing color filter color material overflow and causing color mixing.

The main object of the present invention is to provide a color filter substrate and a liquid crystal display panel thereof, which are effective for preventing inkjet color material from overflowing to adjacent pixels when the color filter is fabricated by an inkjet process. The disadvantage of color mixing.

In order to achieve the above object, a color filter substrate and a liquid crystal display panel thereof according to the present invention comprise a transparent substrate, and a patterned light-shielding body is formed on the transparent substrate, wherein the patterned light-shielding body has a plurality of paintings The plain material receiving groove and the patterned light shielding body have a plurality of grooves; and an opaque metal guiding system disposed on a transistor substrate is disposed corresponding to the groove, and the opaque metal conductor width is larger than the groove to avoid occurrence Light leakage; when filling the color material to the pixel color receiving groove, the excess color material overflowing through the groove is used to avoid color mixing.

When the color material is accommodated in the groove, the excess color material overflowing through the groove is accommodated to avoid color mixing.

The purpose, technical contents, features, and effects achieved by the present invention will become more apparent from the detailed description of the accompanying drawings.

The invention provides a color filter substrate and a liquid crystal display panel, wherein a plurality of pixel color receiving grooves are formed between the patterned light shielding bodies formed on the transparent substrate, and the patterned light shielding body has a plurality of grooves And the opaque metal guiding system on the transistor substrate corresponds to the groove, and the present invention is a coloring material which overflows when the coloring material is filled into the coloring material receiving groove by the groove to accommodate the inkjet process. The technical features of the present invention are detailed in the preferred embodiments.

The fourth figure shows a schematic structural view of the present invention. As shown in the figure, the color filter substrate 30 includes a transparent substrate 32, and a patterned light shielding body 34 is formed thereon. The patterned light shielding body 34 is composed of a plurality of stripes. And a plurality of pixel color receiving grooves 36 are formed between the patterned light shielding bodies 34, and a plurality of grooves 38 are formed on the patterned light shielding body 34; In the inkjet mode, the color materials such as red, green, and blue are sequentially filled in the pixel color accommodating groove 36, and the color material overflowing from the pixel color accommodating groove 36 is accommodated by the groove 38. The color mixture is prevented from being mixed by the toner contained in the adjacent pixel color receiving groove 36. In addition, in order to prevent the problem of light leakage caused by the design of the recess 38, the opaque metal conductor 42 on the transistor substrate 40 is disposed corresponding to the recess 38, and the opaque metal conductor 42 may be a scan line or a data line. And one of the opaque metals such as the common electrode, and the opaque metal conductor 42 which is the scan line is disposed corresponding to the groove 38 on the horizontal light shielding body; the opaque metal conductor 42 which is the data line is correspondingly located in the vertical light shielding The groove 38 on the body is disposed; or the region where the opaque metal conductor 42 of the scanning line and the opaque metal conductor 42 of the data line intersect with the groove at the intersection of the horizontal light shielding body and the vertical light shielding body 38 is correspondingly disposed, and the width of the groove 38 is smaller than the width of the opaque metal conductor 42 disposed corresponding thereto. Further, a single pixel electrode layer 44 and a liquid crystal layer (not shown) are disposed between the color filter substrate 30 and the transistor substrate 40.

The above is a description of the structure of the liquid crystal display panel composed of the color filter substrate 30 and the transistor substrate 40. The structure of the color filter substrate 30 will be described in detail below.

FIG. 5(a) is a schematic structural view of a first embodiment of a color filter substrate according to the present invention, and FIG. 5(b) is a block diagram of the first embodiment of the color filter substrate of the present invention. The enlarged view, the fifth (c) is a cross-sectional view of the block A of the first embodiment of the color filter substrate of the present invention along the line a-a', please refer to the fifth (a) and fifth (b). FIG. 5 and FIG. 5(c), as shown in the figure, a patterned light-shielding body 34 is formed on the transparent substrate 32 of the color filter substrate 30, and the patterned light-shielding body 34 is a horizontal light-shielding body which is vertically staggered by a plurality of stripes and A black matrix composed of vertical light shielding bodies, and a plurality of pixel color receiving grooves 36 are formed between the patterned light shielding bodies 34, and a plurality of grooves 38 are formed on the patterned light shielding body 34. The two are located between the two pixels of the same color material, and the depth of the groove 38 may be one-fifth to four-fifth of the thickness of the patterned light-shielding body 34 or the patterned light-shielding body 34. between. When the color material is sequentially filled in the pixel color receiving groove 36 by the ink jet method, the excess color material is accommodated in the groove 38 to prevent the color material from diffusing and overflowing.

FIG. 6(a) is a schematic structural view showing a second example of the color filter substrate of the present invention, and referring to the block B of the second embodiment of the color filter substrate of the present invention shown in FIG. 6(b). FIG. 2 is a cross-sectional view of the block B of the second embodiment of the color filter substrate of the present invention taken along line bb' shown in FIG. 6(c), as shown in the figure, the color filter substrate 30 The transparent substrate 32 is formed with a plurality of vertically arranged horizontal light-shielding and vertical light-shielding patterned light-shielding bodies 34 as in the first embodiment, and is formed with a plurality of pixel color receiving grooves 36 and a plurality of grooves. 38. Different from the first embodiment, the groove 38 is located between two adjacent pixel receiving grooves 36 for accommodating different color materials. When the color material is sequentially filled in the pixel color receiving groove 36 by the ink jet method, the excess color material overflowing is received by the groove 38 to prevent the color material from diffusing to the adjacent pixel color. The material receiving groove 36 causes color mixing.

The arrangement of the recesses 38 of the two patterned shades 34 of the first embodiment and the second embodiment will be the third embodiment of the present invention. As shown in the seventh (a) and seventh (b), the horizontal light-shielding body and the vertical light-shielding system of the patterned light-shielding body 34 have a plurality of vertically-interlaced long grooves 38, when the color material is filled to the drawing When the plain material is accommodated in the groove 36, the excess color material overflowing will be accommodated in the vertically staggered long groove 38.

8(a) and 8(b) are schematic views showing the structure of the fourth embodiment of the color filter substrate of the present invention and an enlarged view of the D block structure. As shown in the figure, the recess 38 is located in the patterned shading. At the intersection of the horizontal light-shielding body and the vertical light-shielding body of the body 34, the excess color material overflowing from the pixel color-receiving groove 36 will be accommodated by the groove 38.

The four embodiments described above are structural designs in which the recesses 38 are located in the horizontal light-shielding body and the vertical light-shielding body of the patterned light-shielding body 34. In addition, the retaining wall 50 may be stacked on the black matrix composed of the horizontal light blocking body and the vertical light blocking body of the patterned light shielding body 34, and the concave groove 38 is located in the retaining wall 50, and the color filter having the structural design of the retaining wall 50 is disposed underneath. The light sheet substrate 30 will be described in detail.

As shown in the ninth (a) figure, the color filter substrate of the present invention has a structure of a fifth embodiment of the retaining wall, and the ninth (b) is a fifth of the color filter substrate of the present invention. FIG. 9 is a magnified view of the block structure, and FIG. 9(c) is a cross-sectional view showing the structure of the fifth embodiment A' block along the line aa-aa' of the color filter substrate of the present invention. Referring to the ninth (a), ninth (b), and ninth (c) drawings, as shown in the figure, the transparent substrate 32 of the color filter substrate 30 is formed with a plurality of horizontally staggered horizontal light shielding bodies and The patterned light-shielding body 34 is formed by a vertical light-shielding body, and a plurality of pixel color material accommodating grooves 36 are formed between the patterned light-shielding bodies 34, and between the two pixel color-receiving grooves 36 for accommodating the same color material. The patterned light-shielding body 34 includes a black matrix and a retaining wall 50 stacked on top of the black matrix, and has a recess 38 in the retaining wall 50. When the color material is sequentially filled in the pixel color receiving groove 36, the excess color material overflowing will be accommodated in the groove 38.

FIG. 10(a) is a schematic view showing the structure of a sixth example of a color filter substrate having a retaining wall according to the present invention, and the color filter substrate of the present invention shown in FIG. 10(b) has a retaining wall. 6 is an enlarged view of the block structure, and the color filter substrate of the present invention shown in the tenth (c) is a cross-sectional view of the block B' block along the bb-bb' line of the sixth embodiment of the retaining wall. As shown in the figure, a patterned light-shielding body 34 is formed on the transparent substrate 32, and a plurality of pixel color material accommodating grooves 36 are formed between the patterned light-shielding bodies 34, and pixels of different color materials are accommodated adjacent to each other. The patterned light-shielding body 32 between the color material accommodating grooves 36 includes a black matrix and a black matrix on which the retaining walls 50 are stacked, and the grooves 38 are located in the retaining wall 50. The color mixing is prevented by the groove 38 preventing the toner from diffusing to the adjacent pixel color receiving groove 36.

The structure of the two types of stacked retaining walls of the fifth embodiment and the sixth embodiment is combined to become the seventh embodiment of the present invention. As shown in the eleventh (a) and eleventh (b), two pixel materials accommodating the same color material, and two adjacent pixel materials for accommodating different color materials The patterned light-shielding body 34 between the accommodating grooves 36 includes a black matrix and a retaining wall 50 formed by stacking on the black matrix, and a plurality of vertically staggered grooves 38 are formed in the retaining wall 50. When the color material is sequentially filled in the pixel color accommodating groove 36, the excess color material overflowing will be accommodated in the vertically staggered groove 38.

It will be apparent from the above description of the various embodiments that the present invention will improve the formation of the recess 38 on the patterned light-shielding body 34 or the design of the patterned light-shielding body 34 including the retaining wall 50 and the recess 38 in the retaining wall 50. In the inkjet method, the color mixing caused by the overflow of excess color material reduces the amount of inkjet color used, so that the production yield of the liquid crystal display panel will be effectively improved. In addition, after the color material is filled in the pixel color receiving groove 36, a transparent protective layer is formed on the patterned light shielding body 34 and the color material.

The following briefly describes a method for manufacturing the color filter of the present invention, comprising the steps of: providing a substrate, forming a patterned light shielding layer on the substrate, forming a groove on the patterned light shielding body by using a developing or etching technique, and The depth of the groove may be between one-fifth and five-fifth of the thickness of the patterned light-shielding body or the patterned light-shielding body, and a transparent metal layer is formed on the patterned light-shielding body, the substrate and the groove .

The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art, and the scope of the present invention cannot be limited thereto. That is, the equivalent variations or modifications made by the spirit of the present invention should still be included in the scope of the present invention.

20‧‧‧Color filter substrate

22‧‧‧Transparent substrate

24‧‧‧Black matrix

26‧‧‧Color container

30‧‧‧Color filter substrate

32‧‧‧Transparent substrate

34‧‧‧ patterned shades

36‧‧‧Photographic material receiving slot

38‧‧‧ Groove

40‧‧‧Optoelectronic substrate

42‧‧‧Opacity metal conductor

44‧‧‧ pixel electrode layer

50‧‧‧Retaining wall

The first figure is a schematic view of the structure of a conventional color filter substrate.

The second figure is an enlarged view of the block structure of the conventional color filter substrate E.

The third figure is a cross-sectional view of the conventional color filter substrate E block along the e-e' line.

The fourth figure is a schematic structural view of the present invention.

The fifth (a) is a schematic structural view of the first embodiment of the color filter substrate of the present invention.

Fig. 5(b) is an enlarged view showing the structure of the block A of the first embodiment of the color filter substrate of the present invention.

Fig. 5(c) is a cross-sectional view showing the structure of the block A of the first embodiment of the color filter substrate of the present invention taken along line a-a'.

The sixth (a) drawing is a schematic structural view of a second example of the color filter substrate of the present invention.

Fig. 6(b) is an enlarged view showing the structure of the block B of the second embodiment of the color filter substrate of the present invention.

Fig. 6(c) is a cross-sectional view showing the structure of the block B of the second embodiment of the color filter substrate of the present invention taken along line b-b'.

The seventh (a) drawing is a schematic structural view of a third example of the color filter substrate of the present invention.

Figure 7(b) is an enlarged view showing the structure of the C block of the second embodiment of the color filter substrate of the present invention.

The eighth (a) is a schematic structural view of a fourth example of the color filter substrate of the present invention.

Figure 8(b) is an enlarged view showing the structure of the D block of the fourth embodiment of the color filter substrate of the present invention.

The ninth (a) drawing is a schematic structural view of a fifth embodiment of the color filter substrate of the present invention having a retaining wall.

Fig. 9(b) is an enlarged view showing the structure of the fifth embodiment A' of the color filter substrate of the present invention having a retaining wall.

Fig. 9(c) is a cross-sectional view showing the structure of the fifth embodiment A' block along the line aa-aa' of the color filter substrate of the present invention.

The tenth (a) is a schematic view showing the structure of the sixth example of the color filter substrate of the present invention having a retaining wall.

Fig. 10(b) is an enlarged view showing the block structure of the sixth embodiment B' of the color filter substrate of the present invention having a retaining wall.

Fig. 10(c) is a cross-sectional view showing the structure of the B' block of the sixth embodiment of the color filter substrate having the retaining wall along the line bb-bb'.

The eleventh (a) is a structural schematic view showing a seventh example of the color filter substrate of the present invention having a retaining wall.

Fig. 11(b) is an enlarged view showing the block structure of the seventh embodiment C' of the color filter substrate of the present invention.

30. . . Color filter substrate

32. . . Transparent substrate

34. . . Patterned shade

36. . . Pixel color receiving slot

38. . . Groove

40. . . Transistor substrate

42. . . Opaque metal conductor

44. . . Pixel electrode layer

Claims (16)

A color filter substrate comprising: a transparent substrate; and a patterned light-shielding body comprising a black matrix and a stacked wall on the transparent substrate, and formed with a plurality of pixel color receiving grooves, And forming a plurality of grooves on the patterned light shielding body, the grooves extending through the retaining wall to accommodate the overflow colorant. The color filter substrate of claim 1, wherein the patterned light-shielding system comprises a plurality of vertically-interlaced horizontal light-shielding bodies and vertical light-shielding bodies to form the pixel color-receiving grooves. The color filter substrate of claim 2, wherein the groove is located at the horizontal light shielding body or the vertical light shielding body between each two adjacent pixel color receiving grooves. The color filter substrate of claim 2, wherein the groove is located at an intersection of the horizontal light blocking body and the vertical light blocking body. The color filter substrate of claim 2, wherein the groove is a groove on the horizontal light shielding body or the vertical light shielding body. The color filter substrate of claim 2, wherein the horizontal light shielding body or the vertical light shielding body has a plurality of elongated grooves. The color filter substrate according to claim 1, wherein the pixel color receiving grooves are sequentially filled with color materials such as red, green and blue. The color filter substrate of claim 7, wherein the color material is formed in the pixel color receiving groove by an inkjet method. The color filter substrate of claim 7, wherein the patterned light-shielding body and the color material are further provided with a transparent protective layer. A liquid crystal display panel comprising: a color filter substrate comprising a transparent substrate, a patterned light shielding body, the patterned light shielding body comprising a black matrix and a stacked wall on the transparent substrate, and formed on the transparent substrate a plurality of pixel materials accommodating grooves, and forming a complex on the patterned light shielding body a groove extending through the retaining wall to receive an overflow colorant; a transistor substrate having an opaque metal conductor thereon, wherein the groove corresponds to the opaque metal conductor; and a liquid crystal layer, It is disposed between the color filter substrate and the transistor substrate. The liquid crystal display panel of claim 10, wherein the patterned shading system comprises a plurality of vertically interlaced horizontal light blocking bodies and vertical light blocking bodies to form the pixel color receiving grooves. The liquid crystal display panel of claim 11, wherein the metal conductor is one of a scan line, a data line, and a common electrode. The liquid crystal display panel of claim 12, wherein the scan line corresponds to the groove on the horizontal light shielding body. The liquid crystal display panel of claim 12, wherein the data line corresponds to the groove on the vertical light shielding body. The liquid crystal display panel of claim 12, wherein the area where the scan line and the data line intersect corresponds to the groove at a region where the horizontal light blocking body and the vertical light blocking body intersect. The liquid crystal display panel of claim 10, wherein the groove width is smaller than a width of the metal conductor.