TWI261717B - Liquid crystal display device and its manufacturing method - Google Patents

Abstract

The present invention discloses a liquid crystal display device and its manufacturing method. The liquid crystal display device includes: a first substrate formed thereon a plurality of gate lines in parallel with each other and a plurality of data lines in parallel with each other, the gate lines being vertically intersected with the data lines, a pixel area being formed between two adjacent gate lines and two adjacent data lines; a source-drain area formed in the pixel area, the source being electrically connected to one of the two adjacent data lines; a first pixel electrode formed on the pixel area and electrically connected to drain; a second substrate formed at a predetermined distance on the first substrate and having a plurality of color filters, each corresponding to a pixel area at its bottom; and a second pixel electrode layer formed on the second substrate and having an area with a relatively smaller thickness, the area corresponding to the top of the data line. In the present invention, it is able to reduce the coupled capacitance between the pixel electrode and data line by thinning or removing the corresponding pixel electrodes above part of the data lines, thereby alleviating the cross-talk phenomenon and increasing the display quality.

Description

1261717

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display capable of improving a slogan phenomenon in a liquid crystal display and a method of fabricating the same, and a method of fabricating the same, and more particularly to a prior art LCD)/1 iqUid CryStal display, The following is the mainstream of the development of flat panel display, the display principle is to use liquid helium, i曰: ί, dielectric anisotropy and conductive anisotropy, the next day when the electric field is applied. The panel structure for causing the liquid crystal film to produce various photoelectric liquid crystal displays is generally formed by laminating two substrates, wherein a gap of a certain distance is left for injecting liquid crystal, and corresponding electrodes are formed on the upper and lower substrates to form corresponding electrodes for A panel for controlling the steering of liquid crystal molecules and aligning a thin film transistor (TFT) liquid crystal display, comprising a TF τ array ν substrate provided with a thin film transistor array and a color filter layer provided thereon The color filter is composed of the following, and the detailed structure of the TFT array substrate and the color filter will be described below. First, the TFT array will be described with reference to the first and second figures. The manufacturing process of the substrate, Fig. 1 is a top view of a TF T array substrate; Fig. 2 is a cross-sectional view taken along line I - I of the line f in Fig. 1. First, an insulating substrate (such as glass, quartz, etc.) is provided. a 〇1, and then a gate 108 and an insulating layer 107 (not shown in FIG. 1) are sequentially formed on the insulating substrate 101, and then a channel layer 106 is formed on the insulating layer 107,

1261717 V. DESCRIPTION OF THE INVENTION (2) The source electrode 1 0 2 and the drain electrode 1 0 3 are respectively formed on the channel layer 1 〇6, and the source 1 0 2 and the immersed 1 〇 3 are made of impurities. The crystal is formed. The data line 104 and the halogen electrode 1〇5 are disposed on the insulating 1〇7, and are coupled to the source electrode-1 0 2 and the electrode 1 〇 3, respectively. A channel layer 丨〇6 composed of a polysilicon is disposed between the source electrode 102 and the source electrode 103, and is in electrical contact with the source electrode 丨〇2 and the source electrode 1 分别 3, respectively. Fig. 3 is a cross-sectional view showing the line segment ?j - π in Fig. 1 showing the profile of the data line 丨 04 portion in the TFT array substrate.

Next, the structure of the color filter will be described with reference to Fig. 4. The basic structure of the color filter is to form a black matrix layer 2 0 2 (black matrix, BM) on a glass substrate 2〇1, and then sequentially produce a light transmissive red 2 0 3 , Green 204, Blue 205 (RGB) color filter / film layer (color filter film layer shape, size, color, with different types of liquid crystal display), and finally splashed a layer of pixel electrode The layer 2 0 6^ is generally made of a transparent conductive film (such as indium tin oxide, 丨τ〇) θ, which is a corresponding electrode of the halogen electrode 丨〇5 on the thin film transistor array substrate. After the TFT array substrate and the color filter are respectively completed as described above, the two substrates are aligned and pasted, and the liquid crystal 3 is poured in between, and the liquid crystal display panel is completed. At this time, the panel is cut along the line segment _ _ 第 in Fig. 1, as shown in Fig. 5. Since the pixel electrode layer 20 6 is a comprehensive shape 2:01 2 , a halogen electrode layer Mb is formed correspondingly above the data line 104, and the square electrode layer 2〇6 and the data line 丨〇4 are both It belongs to gold. After the metal is overlapped, it is added with a liquid crystal with a dielectric material in the middle.

1261717 V. Inventive Note C3) causes crosstalk, which now causes the quality of the surface to be invisible during display, which is likely to cause attenuation of the signal, which is more likely to occur in large-sized panels and affects yield. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to improve a crosstalk phenomenon of a liquid crystal display and improve display picture quality. In order to achieve the above object, in the present invention, the pixel electrode on one side of the color filter substrate is patterned, and the pixel electrode corresponding to the pixel line corresponding to the TFT substrate is thinned or removed to reduce the color filter. The shank capacitance between the pixel electrode of the substrate and the data line of the TFT substrate can further reduce the crosstalk effect, improve the quality of the displayed surface, and improve the display yield and performance. The liquid crystal display of the present invention comprises: a first substrate on which a plurality of mutually parallel gate lines and a plurality of parallel data lines are formed, and the gate lines and the data lines are perpendicularly intersected, and A pixel region is formed between the adjacent two gate lines and the adjacent two data lines; a source-drain region is formed in the above-mentioned pixel region, and the source line and one of the adjacent two data lines Forming an electrical connection; a first halogen electrode is formed on the pixel region and electrically connected to the drain; a second substrate is disposed at a predetermined distance above the first substrate, and a plurality of colors are formed thereon a filter region, below each color filter region and corresponding to a halogen region on the first substrate; and a second pixel electrode layer formed on the second substrate, the region having a relatively small thickness, And the area corresponds to above the above data line.

0773-9242twf(nl);P91169;Renee.ptd Page 7 1261717 Five forming lines, lines and data, substrate ~ color one field, upper material line polar line - source data, substrate and a smaller The present invention further provides a liquid crystal display comprising: a first substrate having a plurality of mutually parallel gate lines and a plurality of parallel data and said gate lines and data The lines are perpendicularly intersected, and a pixel area is formed between adjacent two closed poles and one data line; a source-drainage area is formed in the pixel region, and the source line and the adjacent two data are One of the lines forms an electrical connection; a first pixel electrode is formed in the pixel region and electrically connected to the drain; a second substrate is disposed at a predetermined distance above the first surface, and a plurality of pixels are formed thereon a color filter region, each color; below the light-receiving region and corresponding to a halogen region on a substrate; and a dioxad electrode layer formed on the second substrate, having a perforated region and the perforated region corresponding to Above the above data line. The manufacturing method of the above liquid crystal display comprises: providing a substrate, wherein a plurality of gate lines parallel to each other and a plurality of parallel lines are parallel to each other; and the gate lines and the data lines are perpendicularly intersected, and adjacent to each other Forming a halogen region between the gate and the adjacent two data lines, forming a pole-drain region in the pixel region, and the source system is electrically connected with one of the adjacent two data lines; forming a first a halogen electrode is electrically connected to the above-mentioned germanium region and is electrically connected to the above-mentioned drain electrode; a second substrate is provided at a predetermined distance of the first dead side, and a plurality of color filter regions are formed thereon, and the second halogen electrode is formed a layer, and the second pixel electrode layer has a region of a thickness phase; the first and second substrates are aligned with a single pixel region on the first substrate below the color filter region on the second substrate, and The area below corresponds to the above data line; and the first and the first board are attached to the above

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V. Description of the invention (5) According to the present invention, it is preferred that the oxygen is small according to the present statement, and the dipole can be divided, and the relatively small coupling capacitance is required, and the region is composed according to the local area, and corresponding The area of the household is thinned or removed according to the structure of the hair device, ), and the light effect is reduced (cr 〇s in order to make the following special details: : month' above the first and second pixel electrodes Indium tin (I 〇 ( 或 或 或 或 或 或 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 The thickness of the region and the small =: can reduce the effect of the pixel layer and the performance of the present invention, but the preferred thickness is 〇, the second halogen electrode in the complex is completely removed 'to form a perforation'. The above-mentioned region and the perforated region may be separated by a plurality of strips from the top of the source-drain region. The liquid crystal display device and the manufacturing method thereof are transmitted through the liquid crystal display 'that is, by using a portion Corresponding to the top of the data line Extremely reduce the electric valley load of the data line (string sl 1 k caused by C loading coupling capacitance), thereby improving the quality of the display. The above objects, features and advantages of the invention are more obvious and easy to understand. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The fabrication of a TFT-LCD active array substrate according to an embodiment of the present invention is shown in FIGS. 6A to 6D. The τ FT-LCD active array substrate is shown in this embodiment.

0773-9242twf(nl); P91169; Renee.ptd Page 9 1261717, Invention Description (6) View. In this embodiment, the bottom gate of the TFT_LCD active array substrate is fabricated, but the invention is not limited to the TFT-LCD active array substrate of the bottom gate, and can also be applied to the TFT of the top gate Uop gate. - LCD active array substrate.

- First, as shown in Fig. 6A, providing a substrate such as glass, performing, > entanglement process and first lithography etching step (pEp__丨, using the first mask) to form a lateral direction The extended parallel gate lines 3〇〇, 3〇1 are on the substrate '', wherein the gate line 300 has a protrusion, and the protrusion is a gate 3 1 2 . Next, a gate insulating layer 3 〇 5 (not shown) is formed on the gate lines 300, 301, the gate 312, and the substrate 0. Among them, the gate lines 3〇〇, 3〇1 and the gate 3 1 2 are, for example, metal layers formed by a deposition method. The inter-electrode insulating layer 305 is, for example, a cerium oxide layer, a vaporized cerium (S i Nx) layer or a cerium oxynitride layer formed by a deposition method. Next, referring to FIG. 6B, a deposition process and a second lithography step (PEP-II, ie using a second mask) are performed to form an a-Si layer (in the n+α-S i layer 3 1 3 The lower layer, not shown) and the n+ a - S i layer 3 1 3 are on a portion of the gate insulating layer 305, wherein the J-Si layer and the n+cu-Si layer 313 form a semiconductor island located in the transistor region 310 ( α - Si semiconductor isiand).

Next, please refer to FIG. 6C, first deposit a conductor layer (not shown), and then perform a third lithography etching step (PEP-I II, that is, using a third mask) to remove part of the conductor layer (not shown). And forming a longitudinally extending data line 4 0 0, 4 0 1 on the gate insulating layer 300, and forming a source 3 16 and a dipole 3 1 4 in the η + α - S i layer 3 1 3 on. Next, using the source 3 16 and the drain 3 丨 $ as a mask, the portion of the η + α - Si layer 313 is etched back to expose the surface of the portion of the α-Si layer.

1261717 V. DESCRIPTION OF THE INVENTION (7) Thus, a thin film transistor (TFT) structure in the transistor region 310 is formed, in which the source 31 6 is electrically connected to the data line 400. Referring to FIG. 6D, FIG. 6D is a top view showing the τ ρ T — l C D active array substrate of the embodiment. The receiver is fully exposed and exposed to form a transparent photoresist layer (not shown) on the surface of the substrate after exposure to form a thin film transistor not formed in the transistor region 310, and a contact is formed on the corresponding drain 3 14 . Hole 3 〇 7 pole 3 1 4 surface. Finally, a pixel electrode 801 is formed on the pixel region 3〇6. The pixel electrode 80 1 is made of a material having high transparency and low electrical resistance, such as indium tin oxide, for driving the liquid crystal alignment direction. The pixel electrode 801 is electrically connected to the drain 3 1 4 via the contact hole 30 7 . Production of color filters There are many methods for producing color filters, such as pigment dispersion, dyeing, electrophotography, and printing. The pigment dispersion method will be exemplified below to illustrate the process of the color filter in this embodiment. The flow of the color filter will be described with reference to Figures 7A to 7I. As shown in FIG. 7A, a glass substrate 0 is first provided, and a light shielding layer 701 is formed thereon, and the material thereof is, for example, a metal chromium or a black photosensitive resin, and then, as shown in FIG. 7B, a matrix pattern is formed by photolithography. It is called black matrix, and it is used for shading. It is used to separate successively produced color filter layers to enhance the contrast of colors. Secondly, the filter elements of the three primary colors of red, blue and green are sequentially produced. First, a red pigment photoresist is formed on the surface of the substrate 0' by spin coating as shown in Fig. 7C.

0773, 9242twf(nl); P91169; Renee.ptd Page 11 1261717 V. Inventive Note (8) 702, and then, as shown in Fig. 7D, left red pigment light at a position where red pigment is intended to be formed by exposure and development. Block 702, and go to ^ ^ 7E «,. Surface, respectively, in the black matrix 701 separated in the halogen region to form blue 7 〇 3 and green 704 filter halogen. The arrangement of halogens in color filters is not the same: red, green, and blue colors can be arranged in a mosaic, straight, or triangular manner. For example, 'on the base (four), the surface is covered with a layer of transparent flat layer V?. After taking 6 ΪΓ: ', a layer of photolithographic layer m is formed on the surface of the flat layer 70 5 , and the material is generally a transparent conductive film, for example, ιτ_ζ〇, to drive the alignment of the liquid crystal molecules. Thereafter, a layer of photoresist (not shown) is formed on the element layer m, and is subjected to a mask etching process to strip the photoresist to the pixel electrode: pattern region 7. 7' as shown in Fig. 7H. Fig. 71 shows: Fig., the position of the pattern area 7 07 is corresponding to the aforementioned τρτ_active H line strip area ❹(1) "knife ... subcorresponding to τ; 夕二?^ pole area 31 G adjacent to the data line ' in: column The source on the substrate - no time to make the pattern area 70 7 thick car =: 'can be controlled by a small insect, as shown in Figure 7J, or as the thickness of the halogen electrode layer 70 6 transparent conductive material completely Remove the cel 1 process of the pattern area 7 0 7 and then, as in the general liquid crystal display process, the color filter substrate

Page 12 1261717

/, the alignment and bonding steps of the TFT LCD active array substrate, such that each of the pixel regions 306 corresponds to a color filter region 702, 703, 704, respectively, and the strip region of the pattern region 70 7 and the data line 4 〇〇, 4〇1 overlap, and the portion of the strip-like region corresponds exactly to the data line adjacent to the source-drain region 0 on the TFT-LCD active array substrate, and a partial cross-sectional view thereof is shown in FIG. 7K. Finally, the liquid crystal display is filled with the liquid crystal display, and the liquid crystal display of the present embodiment is completed after sealing. In the structure of the liquid crystal display device of the present embodiment, the TFT-LCD active array substrate portion comprises a substrate 〇 on which parallel gate lines 3〇〇, 3〇1 and parallel data lines are formed. 401, and the gate lines 30 0, 3〇1 and the line 4 0 0, 4 0 1 are perpendicularly intersected. Forming a halogen region 3 〇6 between the adjacent gate lines 3 〇〇, 3 〇丨 and the adjacent greedy lines 4 0 0, 4 0 1 , and forming a transistor region in the pixel region 3 〇 6 3 1 0, the source 3 1 6 is electrically connected to the data line 4 0 〇. A halogen electrode is formed above the halogen region 306. The color filter portion includes a substrate 〇 on which a black matrix 701, color filter elements 702, 70 3, 74, a flat layer 70 5, and a patterned halogen electrode layer 70 6 are formed. The pattern area 70 7 is composed of a plurality of strip-shaped regions, and after being aligned and packaged through the substrate, overlaps with the position of the data lines 400 and 401 on the TFT-LCI active array substrate, and the strips are separated. The portion of the area corresponds exactly to the stock line of the source-drain region 3 1〇 on the TFT-LCD active array substrate. As described above, the structure and the manufacturing method of the liquid crystal display of the present invention are characterized in that the pixel electrode on the side of the color filter substrate is patterned to partially thinen the pixel electrode above the data line of the TFT substrate or Remove to reduce '^'

1261717 V. DESCRIPTION OF THE INVENTION (ίο) The coupling capacitance between the pixel electrode of the color filter substrate and the data line of the TFT substrate, thereby reducing the crosstalk effect, improving the quality of the displayed surface, and improving the display yield. And the performance of the performance. 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.

Twf(nl):P91169;Renee.ptd Page 14 1261717 Schematic description of the drawings Fig. 1 is a top view showing a conventional TFT-LCD active array substrate. Fig. 2 is a cross-sectional view taken along line I - I in Fig. 1. Figure 3 is a cross-sectional view taken along line Π - Π in Figure 1. Figure 4 shows the structure of a conventional color filter. Fig. 5 is a cross-sectional view showing the panel after the combination of the substrates of Figs. 1 and 3, taken along the line Π - Π in Fig. 1. 6A to 6D are views showing a top view of the fabrication process of the TFT-LCD active array substrate of the embodiment of the present invention. The 7A to 7K drawings show the process of the color filter in the embodiment of the present invention. Symbol Description 0, 0 ', 1 0 1 , 2 0 1 ~ substrate; 1 0 8, 3 0 0, 3 0 1 ~ gate line; 1 0 4, 4 0 0, 4 0 1 data line; 1 0 7 3 0 5 ~ insulating layer; 3 0 6 ~ halogen region; ❿ 3 0 7~ contact hole; 105, 801 ~ halogen electrode; 310 ~ transistor region, 1 0 8 , 3 1 2 ~ gate; 0 6~ channel layer; 313 ~ η + α-Si layer;

0773-9242twf(nl);P91169;Renee.ptd第15页

Claims (1)

1261717 VI. Application for patent scope 1 . A liquid crystal display comprising: a first substrate on which a plurality of mutually parallel closed-pole disks are formed, and strips are parallel to each other, and the gate lines and the data lines are intersected with each other' Forming a buffer region between the adjacent two gate lines and the adjacent two data lines; a source-dipole region of the Danjing is formed in the pixel region, and one of the source system and the adjacent two data lines The data line is electrically connected; 〃 Μ a first halogen electrode is formed on the halogen region and electrically connected thereto; X is formed, a second substrate is disposed on the first substrate, and a plurality of predetermined distances are formed a color filter region, a halogen region on the first substrate below each color filter region; and a portion thereof corresponding thereto Once the Jing electrode layer is formed on the second substrate, the area of the I degree is relatively small, and the area corresponds to the loading; please refer to the liquid crystal display of the first item of the patent range ^, Λ by tin (IT0) Or indium zinc oxide (IZO is cried by the liquid crystal display according to item 1 of the second range, and the & field is composed of a plurality of strip-shaped regions 哕. The library-specific strip region above the polar-dip region , ^ is separated by the area of β Γ. The first substrate or the second substrate is the liquid crystal display according to the item, 5. According to the first item of the patent application, the liquid crystal layer is filled in the first _, The liquid crystal display, 6 such as the 喑 喑 I I - substrate and the second substrate η ... the liquid crystal display according to the first item =: a thick upper. Among the) wherein the source of the source More include 1261717, the scope of the patent application ^ is connected with the adjacent _ green middle of the source-no-polar area 'pole gate line' to drive 7 · a liquid crystal display, including: a plurality of = H $ board, on which Forming a plurality of parallel gate lines and intersecting Γ, in the lean line of the thousand lights, and the gate line and the data line are vertical regions; the adjacent two gate lines of the Aachen and the adjacent two data lines Forming a pixel adjacent to the second electrical connection to form the first hole region 8. Stomach=昼9. A source such as a perforated region. 10 The first to eleven polar regions are formed in the pixel region, and the source is Forming an electrical connection with one of the data lines of the branch and the spring; the electrode is formed on the pixel region, and the f-substrate formed on the drain is disposed at a predetermined distance above the first substrate, a ^, λα 9 &, under the mother color filter region and corresponding to a pixel region on the soil plate; and a second electrode layer formed on the second substrate, which has a wear, and The perforated area corresponds to the liquid crystal display described above in the above-mentioned data line, such as ♦ Patent Application No. 7. Wherein, the drain layer is indium tin oxide (yttrium) or indium oxide (ιζο). The liquid crystal display according to claim 7, wherein the 'Λ 条 strip-shaped area composition' strip (9) region is separated by the region corresponding to the -> and the polar region. The liquid crystal display according to item 7, wherein the substrate or the second substrate is glass. The liquid crystal display as described in item 7 of the patent application scope is crying. , :? 91169: Renee.ptd Page 18 1261717 VI. The scope of the patent application includes a liquid crystal layer filled in the 12. The patent application includes a gate that drives the source-no-polar region with the adjacent two. 13. A liquid crystal display providing a substrate 5, wherein the substrate line and the plurality of parallel lines intersect perpendicularly, and in the adjacent two-pad area, forming one of the adjacent two data lines in the pixel area a first pixel electrode is electrically connected; providing a second substrate in the plurality of color filter regions, wherein the second pixel electrode layer has a thick alignment corresponding to the first and second color filter regions The lower portion corresponds to the above data line; the first and second portions are as described above. The method according to the patent application, wherein the second halogen is electro-zinc (IZ 0 ). 15. The method of claim 1, wherein the thickness of the region is between a substrate and the second substrate. The liquid crystal display of claim 7, wherein one of the gate lines of the gate line is connected, the method for manufacturing the method comprises: forming a plurality of gate lines parallel to each other, and the gate line and the data Forming a source-drain region between the line polar line and the adjacent two data lines, and the source line is electrically connected; forming a first substrate on the pixel region and the drain a predetermined distance, above, and a second pixel electrode layer, and the relatively small area; the substrate, a color region on each of the substrates on the second substrate, and the region And the substrate. The liquid crystal display according to Item 13 is formed by indium tin oxide (ITO) or indium oxide. The liquid crystal display according to Item 13 is produced as 0, that is, the second pixel electrode layer is 0773-9242twf(nl);P91169;Renee.ptd Page 19 1261717 VI. Patent application scope Part of the region 1 6. According to the application method, wherein the domain is from the source 1 7. According to the application method, wherein the 18 If the application method, it includes more. 19. If the method is applied, it also includes the use of a perforation. The production area of the liquid crystal display according to Item 13 of the patent scope is composed of a plurality of strip-shaped regions separated by regions corresponding to the upper portions of the strip-shaped regions. The production of the liquid crystal display according to the first aspect of the patent scope is as follows. The first substrate or the second substrate is glass. The liquid crystal display described in claim 13 is filled with a liquid crystal layer to form a gate for the fabrication of the liquid crystal display according to the first substrate and the second substrate. One of the adjacent two gate lines is to drive the source-no-polar region. ❹ I-Z:*:;η 1):Ρ91169;Renee.p td第20页