TWI330271B - Liquid crystal display panel and manufacturing method of substrate thereof - Google Patents

Description

1330271

Erda No.: TW2333PA IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method for manufacturing a liquid crystal display panel and a substrate thereof, and more particularly to a frictional alignment for performing an alignment film After the operation, the pollution source is blocked by the liquid crystal display panel outside the display area and the manufacturing method of the substrate. [Prior Art] With the development of flat panel displays, liquid crystal display panels have been widely used in various aspects of daily life, such as televisions, monitors, computer screens, notebook computers, personal digital assistants, and mobile phones. product. The alignment film is one of the main constituent elements of the liquid crystal display panel, and its function is to make the liquid crystal molecules in the liquid crystal display panel and the surface of the alignment film have an inclination (ie, pretik angle) to reach the liquid crystal. The effect of uniform orientation of molecules. The alignment film is generally produced by using a transparent conductive film (a material such as idium tin oxide (ITO) on a glass substrate, using a coater and a transfer plate to polymerize polyimide (polyimide, The PI liquid is evenly coated on the transparent conductive film of the substrate and the substrate. For the vertical alignment type (VA) liquid crystal display panel, the alignment film functions to make the liquid crystal molecules have no applied electric field. In this case, the arrangement is perpendicular to the upper and lower substrates. Therefore, after the alignment film is coated and completed, no rubbing operation is required. For twisted nematic (TN) liquid crystal display. For the panel, the function of the alignment film is to make the liquid crystal molecules appear parallel to the arrangement of the upper and lower substrates without an applied electric field. Therefore, after the alignment film coating is completed, the alignment roller is used to laminate the polyimide film. Brush a parallel groove so that the liquid crystal can lie in the groove according to the groove of the 13 1330271 three-number: TW2333PA. However, when the alignment roller rolls over After the alignment film, there is a source of contamination on the alignment film of the display-area of the upper and lower substrates, such as the fleece of the alignment roller. The resin coated on the surface of the wool, the polyimine on the fluff, dust or foreign matter Therefore, the subsequent display of the liquid crystal display panel of k is a display defect, such as a group of gray dots or bright spots. As a result, the display quality and usability of the liquid crystal display panel will be greatly reduced.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a liquid crystal display panel and a method of manufacturing the same. The utility model is characterized in that the retaining wall is disposed in the surrounding non-display area and the pollution source is blocked from the display area after the frictional alignment operation of the alignment film, so that the source material is prevented from being contaminated in the display area, thereby preventing the display panel from being defective (such as a group). Gray point or highlight). In this way, the display quality and practicability of the liquid crystal display panel can be greatly improved. According to an object of the present invention, a liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer. The liquid crystal layer is disposed between the first substrate and the second substrate. The first substrate comprises a substrate, an aligning film and a plurality of walls. : The upper layer of the material is separated from the non-display area and the surrounding non-display area is placed in the display area. These retaining walls are disposed in the surrounding non-display area' and the height of the retaining walls is higher than the height of the alignment film. According to the object of the present invention, a substrate for a liquid crystal display panel is proposed. First, a display area and a surrounding non-display area are defined on a substrate. Next, a separate forming-aligning film and a plurality of supporting walls are formed on the display area and the surrounding non-display area, and the height of the walls is higher than the height of the alignment film. Then, the alignment film is subjected to the alignment action and the barriers are blocked from the display area by the retaining walls. (S) 6 1330271

The following objects, features, and advantages of the present invention will become more apparent from the detailed description of the preferred embodiments of the present invention. At the same time, referring to the figure 1A to 2C's 'the eighth to ap ^ ^ ^ , , the circle drawing is not in accordance with the process plan view of the substrate of the liquid crystal display panel according to the example of the present month, and the second circle is corresponding to the first The beauty of the liquid crystal display panel of the eight to ten images. First, please refer to Fig. 1 and Fig. 2 for providing; a substrate 11 substrate 11 defines a display area ΑΑ and a surrounding non-display area da. In the redemption, the display area AA corresponds to the pixel array area and the liquid crystal filling area of the liquid crystal display panel, and the surrounding non-display area DA corresponds to the external circuit connection area of the liquid crystal display panel. Further, a region of, for example, two small-area substrates 11 can be first divided in a large-area substrate, and the cutting lines 11 & Then, as shown in FIG. 1B and FIG. 2B, an alignment film 14 is formed respectively, and a retaining wall is disposed on the display area AA and the surrounding non-display area DA. The height of the retaining walls is greater than the width of the alignment film 14. There are other laminates under the collision wall and the alignment film _4, and the height of the substrate (such as a glass substrate, etc.) to the collision wall is higher than the height of the substrate (such as a glass substrate, etc.) to the alignment film 14. These retaining walls have nearly the same height, or are spaced apart from each other to form a high and low step. These retaining walls can contain single or multiple layers. If the wall members are spaced apart from each other at different heights and form a height difference, the height of the retaining walls may be increased or decreased from the edge of the substrate u to the edge of the display area AA, and the retaining walls may be continuous or A discontinuous manner is formed in the surrounding non-display area DA. In the present embodiment, the three retaining walls i3a, 丨3b, and 13c are formed on one side of the display area aA as an example, and the retaining walls 13a, ! 3b and 13c are continuous structures' and the heights of the retaining walls i3a to 13c are from the edge of the substrate u 8

—Don't shout: TW2333PA is incremented at the edge of the display area AA. In addition, the load wall 13a is closest to the display area AA, and the retaining wall 13c is farthest from the display area AA. Further, the above-mentioned wall 13 a 13 c may be completed earlier or later than the alignment 臈 14 as a? a + two JC ]. The above-mentioned retaining walls i3a to i3c can be completed simultaneously with the film 14 . In addition, the fascinating walls 13a to 13c include the genus, the Thai a, the genus, the genus 5 gold, the transparent conductive material, the organic insulation 2, the inorganic insulating material, the photo spacer material, the color filter material or the black car material. That is to say, the support walls 13a to Ue can be combined with the gate forming step, the gate insulating layer forming step, the source/no-polar forming step, the protective layer forming step, and the book Xin Lei standard in the process of the liquid crystal display panel. The electrode forming step, the photo spacer forming step, the beige filter forming step, or the black matrix forming step are simultaneously performed. It should be noted that the '1B and 2B's alignment 矸 w B soil, the same film can be used for the polyimide that has not undergone the alignment action ^ and then in the 1B and 2B The rubbing alignment operation of the alignment film 14 is performed in the direction of the arrow toward the drum cymbal 5. As shown in the figures (1) and 2c, the walls n to 13c perform the rubbing alignment operation of the alignment film 14 to block the dyeable source 16 from the display area AA, thereby preventing the pollution source 16 from falling on the display area. In AA, the display defect of the liquid crystal display panel is further prevented. Therefore, the substrate H) of the liquid crystal display panel is finally completed. Among them, the pollution source 16 may be a resin coated on the surface of the fluff of the alignment roller 15, a polyimide on the pile, dust or a foreign matter. The substrate 1 () of the liquid crystal display panel comprises a thin film transistor substrate or a color calender substrate. Thereafter, the stencil 11a cuts and separates the substrates 10 of the two liquid crystal display panels. Therefore, the substrate 1 of the liquid crystal display panel (for example, a thin film transistor) can be subjected to the liquid crystal filling step and the substrate pairing step of the liquid crystal display panel with the substrate of another liquid crystal display panel (for example, a color filter substrate). Please refer to FIG. 2D, which is a cross-sectional view showing a liquid crystal display panel to which the substrate of the first embodiment is applied. In FIG. 2D, the liquid crystal display panel 21 includes the above 1330271

Sanda number: TW2333PA substrate 10, a substrate 22, and a liquid crystal layer 23, and a liquid crystal layer 23 is disposed between the substrates 1 and 22. The substrate 1G' includes a substrate u, an alignment film 14, and a plurality of 'retaining walls 13a to 13C. A display area AA and a surrounding non-display area DA are defined on the substrate 11, and the alignment film 14 is disposed in the display area ΑΑβ. The retaining walls na are disposed in the surrounding non-display area DA, and the retaining walls 13a are The height of 13c is higher than the height of the alignment 臈14. For example, the heights of the retaining walls 13a to 13c are increased from the edge of the substrate u toward the edge of the display area AA. In addition, the substrates 1 and 22 are sandwiched by a sealant to sandwich the liquid crystal layer 23, wherein the sealant may cover all or part of the retaining walls 13a to 13c, or may be disposed on the retaining walls 13a. Between nc and alignment film 14. In addition, the substrates 1 and 22 are respectively a thin film transistor substrate and a color filter substrate, or the substrates 22 and 1 are respectively a thin film transistor substrate and a color filter substrate. In this embodiment, the design of the retaining wall on the non-display area around the substrate is provided, except that the pollution source can be blocked from the display area after the rubbing alignment operation of the alignment film is performed, and the complete support of the two substrates assembled into the panel can be provided. Sex. Therefore, it is possible to prevent the upper and lower substrates from being improperly deformed after the panel is assembled, thereby avoiding an edge gap, a ceil gap error or a counter position error at the edge of the panel. Embodiment 2 Referring to Figure 3, there is shown a plan view of a substrate of a liquid crystal display panel according to a second embodiment of the present invention. The substrate 20 of the liquid crystal display panel of the present embodiment is different from the substrate 1 of the liquid crystal display panel of the first embodiment in that the remaining constituent elements of the retaining walls 23a to 23c' are continued to be labeled and will not be described again. As shown in Fig. 3, the retaining walls 23a to 23c are disposed in the peripheral non-display area DA in a discontinuous manner and are located outside one side of the central non-display area AA, and have 1330271

Sanda number · TW2333PA 'The height is almost the same or the height difference is formed at different heights. The retaining wall 23a is closer to the display area AA, and the wall 23c is farthest from the display area AA. The height of the wall 23a - 23c is increased from the edge of the substrate 11 to the edge of the display area AA, and the walls 23a to 23c are used to block the pollution source from the display area AA after performing the frictional alignment operation of the alignment film 14. . Further, the openings in the retaining walls 23a to 23c may be alternately arranged in correspondence with each other. [Embodiment 3] Referring to Figure 4, there is shown a plan view of a substrate of a liquid crystal display panel according to a third embodiment of the present invention. The substrate 3 of the liquid crystal display panel of the present embodiment is different from the substrate 1 of the liquid crystal display panel of the first embodiment in the retaining walls 33a to 33c. The rest of the same constituent elements continue to use the reference numerals and will not be described again. As shown in Fig. 4, the retaining walls 33a to 33c are disposed in a continuous manner in the surrounding non-display area DA, and are disposed around the central non-display area AA, and have a near phase.

With the same degree or with different heights to form high and low step. The retaining wall 33a is closest to the display area AA, and the retaining wall 33c is the farthest from the display area AA. Among them, the retaining walls 33 & 33 are used to block the contamination source from the display area AA after the rubbing alignment operation of the alignment film 14 is performed. The fourth embodiment of the present invention is a top view of a substrate of a liquid crystal display panel according to a fourth embodiment of the present invention. The substrate 4 of the liquid crystal display panel of the present embodiment is different from the substrate 3 of the liquid crystal display panel of the second embodiment in that the remaining constituent elements of the retaining wall 〜43c' are continued to be labeled and will not be described again. As shown in Fig. 5, the retaining walls 43a to 43c are disposed in a non-continuous manner in the surrounding non-"display area DA" and are disposed around the central non-display area, and have a proximity of 1330271.

Sanda number: TW2333PA The height of the same door or the height difference between different heights. The retaining wall 43a is closer to the display area AA, and the stop is farthest from the display area AA. Wherein, the south degree of the retaining wall ❾ 仏 递增 is increased from the edge of the substrate 往 to the edge of the display area AA, and the retaining wall “a ～ 43c is used to perform the friction aligning action of the aligning film 14 to smash the pollution source against the display. In addition, the openings in the collision walls 43a to 43c may be alternately arranged alternately on each side of the display area μ. Embodiment 5 Referring to FIG. 6, the description is based on the fifth embodiment of the present invention. The liquid crystal display panel 51 of the present embodiment differs from the liquid crystal display panel 21 of the first embodiment in the substrate 5A, and the substrate (7) of the embodiment (10) of the present embodiment differs in that The wall 53a~仏. The rest of the same elements will continue to be used, and will not be described again. ^ - As shown in Fig. 6, the height of the retaining walls 53a~53c is not the edge of the AA by the edge of the substrate u. The decreasing amount is used to block the dye source from the display area AA after the rubbing alignment operation of the alignment film 14. The retaining wall "a is away from the display area - and the retaining wall 53c is farthest from the display area AA. Further, the retaining walls 53 & are disposed in a continuous or discontinuous manner outside the side of the central non-display area AA. Alternatively, the wall walls 53a to 53c are not disposed in a continuous or discontinuous manner around the central non-display area AA. When the retaining walls 53a to 53c are disposed in the peripheral non-display area DA in a continuous or discontinuous manner, the openings in the retaining walls 53a to 53c may be alternately arranged alternately on each side of the central non-display area Μ. The retaining walls 53a to 53c may be stacked in layers or in multiple layers. Further, the substrates 50 and 22 sandwich the liquid crystal layer through the frame combination, wherein the frame glue can cover all or part of the retaining walls 53a to 53c, or the retaining walls 53a to 53c and the alignment film 14 are disposed. between. In addition, the substrate 5 is divided into 8 11 13.30271

Sanda number: TW2333PA is a thin film transistor substrate and a color filter substrate, or the substrates 22 and 5 are respectively a thin film transistor substrate and a color filter substrate. Embodiment 6 Referring to Figure 7, there is shown a cross-sectional view of a liquid crystal display panel according to Embodiment 6 of the present invention. The liquid crystal display panel 6 of the present embodiment differs from the liquid of the first embodiment in that the display panel 21 is different from the substrate 60, and the substrate (9) of the present embodiment is different from the substrate 1 of the first embodiment in the retaining walls 63a to 63c. . The rest of the same • The constituent elements continue to be labeled and will not be described again. As shown in FIG. 7, the retaining walls 63a-63c have substantially the same height for blocking the pollution source in the display area AA after the frictional alignment action of the alignment film 14, and the retaining wall 63a is closest to the display area AA. The wall 63c is the farthest from the display area aa. Further, the retaining walls 63a to 63c are disposed in a continuous or discontinuous manner outside one side of the central non-display area AA. Alternatively, the retaining walls 63a to 63c are disposed around the central non-display area AA in a continuous or non-connected manner. If the retaining walls 63a to 63c are disposed in the peripheral non-display area DA in a continuous or discontinuous manner, the openings in the retaining walls 63a to 63c can be alternately arranged alternately with each other on the side of the central non-display area AA. The retaining walls 03a to 63e may be a single layer or a plurality of layers. In addition, the substrates 60 and 22 are sandwiched by the frame stack to sandwich the liquid crystal layer 23, wherein the busy glue can cover all or part of the retaining walls 63a-63c, or the retaining walls 63a-63c and the alignment film 14 are disposed. between. In addition, the substrate 6 is covered. The film is a thin film transistor substrate and a color filter substrate, or the substrates 22 and -6 are respectively a thin film transistor substrate and a color filter substrate. The liquid crystal display panel and the substrate manufacturing method thereof disclosed in the above embodiments of the present invention, wherein the retaining wall is disposed in the surrounding non-display area, and the pollution source is shielded from the display area after the alignment film is subjected to the alignment action. Can prevent pollution sources (eg 12 1330271

Sanda number: TW2333PA The resin coated on the surface of the fluff of the directional roller, the polyimine on the fluff, dust or foreign matter) is dropped in the display area, so as to avoid the display of the liquid crystal display panel (such as group gray dots or Highlights). In this way, the display quality and practicability of the liquid crystal display panel can be greatly improved. In addition, the present embodiment sets the retaining wall on the non-display area around the substrate. Tenth, in addition to blocking the pollution source after the rubbing alignment action of the alignment film, it can provide the complete supportability after the two substrates are assembled into a panel. Therefore, it is possible to prevent the panel from being improperly deformed after the assembly of the two substrates, and thereby avoiding an edge gap, a thickness loss (e), or a misalignment error of the edge of the panel. The present invention has been described above in terms of a preferred embodiment, and is not intended to limit the invention, and may be used in various ways without departing from the scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims. 8

13 1330271 三达号: TW2333PA [Simplified Schematic Description] FIGS. 1A to 1C are diagrams showing a process of a substrate of a liquid crystal display panel according to Embodiment 1 of the present invention; FIGS. 2A to 2C are diagrams corresponding to the i-A. FIG. 2D is a cross-sectional view showing a liquid crystal display panel of the substrate of the first embodiment; FIG. 3 is a liquid crystal display according to a second embodiment of the present invention; A plan view of a substrate of a liquid crystal display panel according to Embodiment 3 of the present invention; and FIG. 5 is a plan view of a substrate of a liquid crystal display panel according to Embodiment 4 of the present invention; FIG. 6 is a cross-sectional view showing a liquid crystal display panel according to Embodiment 5 of the present invention; and FIG. 7 is a cross-sectional view showing a liquid crystal display panel according to Embodiment 6 of the present invention. [Description of main component symbols] 10 ' 20 ' 30, 40, 50, 60: Substrate 11 of liquid crystal display panel: Substrate 11 a : Cutting lines 13a to 13c, 23a to 23c, 33a to 33c, 43a to 43c, 53a· ~ 53c ' 63a~63c : Retaining wall 14 : Alignment film 15 : Aligning roller 1330271

Sanda number: TW2333PA 16 : pollution source 21, 51, 61 · liquid crystal display panel 22 : substrate 23 : liquid crystal layer 50 : arrow AA . display area DA : surrounding non-display area

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Claims (1)

Example 271 X. Patent Application Range: 1 · A liquid crystal display panel comprising: a first substrate and a second substrate; and an I-year L_98. 曰 曰 revision | 8. 14 a liquid crystal layer, disposed at the first Between the substrate and the second substrate; wherein the first substrate comprises: a substrate on which a display area and a surrounding non-display 7JT area are defined, and an alignment film is disposed in the display area; A plurality of retaining walls are disposed in the surrounding non-display area, and the south of the retaining walls is higher than the height of the alignment film and smaller than the frame glue height. 2. The panels of claim 1 wherein the collision walls are of nearly the same height. 3. The panel as described in the scope of the patent application, wherein the wall comprises a single layer or a plurality of layers. 』 4. The panel of claim 1, wherein the barriers form height differences at different heights, and the heights of the barriers are increased from the edge of the substrate to the edge of the display area. * 5. The panel of claim 1, wherein the retaining walls form a height difference with different twists, and the edges of the retaining walls are tapered toward the edge of the display area. The panel of claim 6, wherein the wall is disposed in a continuous manner around the display area. A field as described in the scope of claim 2, wherein the wall is disposed around the display area in a manner that is not consistent. ^ 8 · The panel described in the scope of the patent application, wherein the back comprises a metal, a metal alloy, a transparent conductive material, an organic insulating material: 16 inorganic, "bar edge material, photo spacer (PS), color A filter, a light film (C) filter, or a black matrix (BM) material. 9. The panel of claim 1, wherein the alignment film comprises polyimide. 10. The panel of claim 1, wherein the first substrate and the second substrate are a thin film transistor substrate and a color filter substrate, respectively. The panel of claim 1, wherein the second substrate and the first substrate are respectively a thin film transistor substrate and a color filter substrate. 12. The panel according to claim 1, wherein the substrate The invention comprises a glass substrate, a plastic substrate or a ceramic substrate. The method for manufacturing a substrate for a liquid crystal display panel comprises: defining a display area and a surrounding non-display area on a substrate; respectively forming a alignment The film and the plurality of retaining walls are in the display area and the surrounding non-display area, the height of the retaining walls is higher than the height of the alignment film and less than the height of the sealant; and the frictional alignment action of the alignment film is performed. The method of claim 13, wherein the retaining walls have a height that is approximately the same. The method of claim 13, wherein the retaining wall comprises a single layer or a plurality of layers. The method of claim 13, wherein the retaining wall is completed earlier than the alignment film. 17. The method of claim 13, wherein 1330271 the wall is completed later than the alignment film 18. The method of claim 3, wherein the plurality of walls are simultaneously completed with the alignment film. The method of claim 13 wherein the retaining walls have different heights. Forming a height difference, the height of the retaining walls is increased from the edge of the material to the edge of the display area. 20. The method of claim 13, wherein the retaining walls have different heights and heights The money ^ The edge of the material is decremented toward the edge of the display area. The method of claim 13, wherein the retaining wall is disposed in a continuous manner around the display area. • For example, please refer to the patent scope 13 π /T] <Methods Some retaining walls are arranged around the display area in a discontinuous manner. . 23. The method of claim 13, wherein the = metal, metal alloy, transparent conductive material, organic insulating material = = edge material, photo spacer material, color calender material or black moment. The method of claim 13, wherein the substrate comprises a polyimine, and the method of claim 13, wherein the substrate of the basin comprises a thin film transistor substrate or a substrate. 26. The method of claim 3, wherein the substrate comprises a glass substrate 'plastic substrate or ceramic substrate. 18