KR20120044780A - Thin film transistor array panel, liquid crystal display, method to repair thereof, coror filter array panel and method of fabrication thereof - Google Patents

Abstract

PURPOSE: A thin film transistor display panel, a liquid crystal display device, and a repair method thereof, and a color filter display panel and a manufacturing method thereof are provided to reduce repair time and reduce the times of laser cutting. CONSTITUTION: A first sustain electrode(133a) is in parallel with a gate line. A pair of second sustain electrodes(133b) are located on both sides of a data line(171). A connection portion(33) crosses the data line. The connection portion connects the second sustain electrode. A connection bridge(83) crosses the gate line. The connection bridge connects the second sustain electrode located in a neighbor pixel.

Description

Thin film transistor array panel, liquid crystal display device, repair method thereof, color filter display panel and manufacturing method thereof

The present invention relates to a thin film transistor array panel, a liquid crystal display device, a repair method thereof, a color filter display panel, and a manufacturing method thereof.

Liquid crystal display (LCD) is one of the most widely used flat panel display devices. It consists of two substrates on which electrodes are formed and a liquid crystal layer interposed therebetween and applies a signal to the electrode to apply a signal to the liquid crystal layer. A display device for controlling the amount of light transmitted by rearranging the liquid crystal molecules.

One of the two substrates constituting the liquid crystal display device, a thin film transistor (TFT) substrate is a circuit board for independently driving each pixel in a liquid crystal display or an organic light emitting diode (OLED). Used.

The thin film transistor substrate includes a gate line for transmitting a gate signal and a data line for transmitting a data signal, and is formed of a thin film transistor connected to the gate line and the data line, a pixel electrode connected to the thin film transistor, and the like.

When the wiring of the liquid crystal display device is disconnected or short-circuited, the corresponding pixel becomes a bad pixel and needs to be repaired. The repaired pixel and its surrounding pixels have a problem such as lower or higher luminance than normal pixels.

Therefore, a process of repairing a defective pixel is required. In particular, when a pixel defect occurs due to disconnection of a data line, several laser cutting and laser shorting processes are performed to repair the data line. There is a problem that the repair time increases.

In addition, impurities may be generated due to the laser process. Since the impurities are separated from the conductors, there is a problem in that image quality is poor by shorting the common electrode and the pixel electrode or the common electrode and the data line.

Accordingly, an object of the present invention is to provide a thin film transistor array panel, a liquid crystal display, and a repair method capable of simplifying the repair process and minimizing a short circuit caused by impurities generated by the laser process.

The thin film transistor array panel according to the above object is connected to an insulating substrate, a gate line and a sustain electrode disposed on the insulation substrate, a data line intersecting the gate line and the sustain electrode line, a thin film transistor connected to the gate line and the data line, and a thin film transistor. A storage electrode comprising: a first storage electrode parallel to the gate line, a pair of second storage electrodes extending from the first storage electrode in parallel with the data line and positioned on both sides of the data line; And a connecting portion connecting the pair of the second storage electrodes across the data line and connecting the second storage electrodes positioned on the neighboring pixels across the gate line.

The second storage electrode may include a fixed end connected to the first storage electrode and a free end not connected to the first storage electrode.

The second storage electrode may include a first bent portion, a linear portion, and a second bent portion positioned between the fixed end and the free end.

The connection part may include an oblique part extending toward the data line from the first bent part and the second bent part.

The second storage electrode includes a left second storage electrode positioned to the left and a right second storage electrode positioned to the right of the data line, and the left second storage electrode and the right second storage electrode correspond to the data line. Inverted symmetry can be achieved around.

The connection bridge may connect the fixed end and the free end of two neighboring pixels.

The connection bridge may be formed of the same material on the same layer as the pixel electrode.

The pixel electrode and the thin film transistor of two pixels positioned at both sides of the data line may be inverted symmetrically or mirror-symmetrically about the data line.

According to another aspect of the present invention, a thin film transistor array panel includes a left second sustain electrode separated from a connection part, a portion overlapping the data line and the connection part are short-circuited, and a connection leg and a second bent part are separated from each other. The pixel electrode may further include a pixel electrode configured to receive a signal transferred from the sustain electrode to the data line.

In a method of repairing a thin film transistor array panel for achieving the above-mentioned another problem, a connection part includes a first connection part and a second connection part positioned adjacent to two adjacent gate lines, respectively, Cutting between the first connection portion, between the left second sustain electrode and the second connection portion, between the connection leg and the second bent portion, and shorting a portion where the data line and the first connection portion and the second connection portion overlap by using a laser. It includes.

According to another aspect of the present invention, a liquid crystal display device includes a first insulating substrate, a plurality of color filters positioned on the first insulating substrate, a common electrode positioned on the color filter, a second insulating substrate facing the first insulating substrate, and a first insulating substrate. A gate line and a storage electrode line disposed on the insulating substrate, a data line crossing the gate line, a thin film transistor connected to the gate line and the data line, and a pixel electrode connected to the thin film transistor, wherein the color filter is removed from the color filter. The concave portion is formed, and the concave portion is positioned at an intersection point where the storage electrode line and the data line cross each other.

The recesses of two neighboring pixels may face each other.

The storage electrode line includes a first storage electrode and a second storage electrode extending along the data line from the storage electrode line, and the first storage electrode and the second storage electrode are positioned opposite to the data line.

The first insulating substrate further includes a display unit on which the pixel electrode is formed, a driver for applying a signal to the gate line and the data line, a plurality of first dummy color filters and a second dummy color filter positioned outside the display unit. The first dummy color filter and the second dummy color filter may be opposite to each other with respect to the display unit.

The color filter includes first to third color filters representing different colors, a first dummy color filter representing the same color as the first color filter, and a second dummy color filter respectively representing the second color filter and The display apparatus may further include a first small dummy color filter and a second small dummy color filter representing the same color as the third color filter.

The first dummy color filter includes a recess located in the display unit and facing a recess of the first color filter closest to the first dummy color filter, and the first small dummy color filter and the second small dummy color filter. Each of the first dummy color filter and the recess may include a recess facing each other.

The first dummy color filter is formed with the same width as the first color filter, the first small dummy color filter is formed with the same width as the second color filter, and the second small dummy color filter is the third color filter. It may be formed to the same width as.

The first small dummy color filter and the second dummy color filter may be spaced apart by the width of the first color filter.

The first dummy color filter may be spaced apart from the display by the width of the second color filter or the third color filter.

The first color filter is a green color filter, the second color filter is a red color filter, the third color filter is a blue color filter, and the first small dummy color filter is closer to the display unit than the second small dummy color filter. Can be located.

The color filter includes first to third color filters representing different colors, the first dummy color filter representing the same color as the second color filter, and the second dummy color filter respectively representing the first color filter and the first color filter. And a first small dummy color filter and a second small dummy color filter representing the same color as the third color filter.

The first dummy color filter includes a recess formed in the same position as the recess of the first color filter adjacent to the first dummy color filter and positioned in the display unit, and includes a first small dummy color filter and a second small dummy. The recess of the color filter may be formed at a position in the same direction.

The first dummy color filter is formed with the same width as the second color filter, the first small dummy color filter is formed with the same width as the first color filter, and the second small dummy color filter is the third color filter. It may be formed to the same width as.

The first small dummy color filter and the second heap pile color filter may be spaced apart from each other by the width of the second color filter.

The first dummy color filter may be spaced apart from the display unit by the width of the first color filter or the third color filter.

The first color filter is a red color filter, the second color filter is a blue color filter, the third color filter is a green color filter, and the first small dummy color filter is closer to the display unit than the second small dummy color filter. Can be located.

According to another aspect of the present invention, there is provided a method of manufacturing a color filter, in which a first photosensitive layer including a pigment is formed on an insulating substrate including a plurality of pixel regions forming an N × M matrix, and a photomask is formed on the first photosensitive layer. After aligning and exposing and developing a second color filter to form a first color filter, a third step of forming a second photosensitive film comprising a pigment different from the first photosensitive film on an insulating substrate, a photomask on the second photosensitive film 2 And a fifth step of horizontally moving and aligning by a column, and a fifth step of forming a second color filter by exposing and developing the second photosensitive film through an optical mask, wherein the optical mask corresponds to the pixel area, The branch includes a first transmission region and a second transmission region, wherein the first transmission region and the second transmission region are in mirror image symmetry, and in a second step, the second transmission region corresponds to the second row, and the fourth stage In the first transmission region corresponds to the first column.

In the fourth step, the photomask may align the first transmission area in the left column of the column corresponding to the second transmission area in the second step.

In the fourth step, the concave portion of the first transmission region of the photomask may be disposed to face the concave portion of the first color filter including the concave portion formed in the second transmission region formed in the second step.

The plurality of pixel regions may form a display unit for displaying an image, and the first color filter formed in the first step may further include a first dummy color filter positioned outside the display unit.

In the second step, the first transmission region may correspond to the dummy color filter outside the display unit.

In the sixth step, the photomask may be disposed so that the first transmission region corresponds to N columns.

The second color filter may be a red color filter, and the first color filter may be a green color filter.

The method may further include a sixth step of forming a third photoresist film including a blue pigment on the insulating substrate, and a seventh step of forming a third color filter by exposing and developing the photomask on the third photoresist film.

The third color filter formed in the sixth step may further include a second dummy color filter positioned outside the display unit.

The first color filter formed in the fourth step may further include a third dummy color filter positioned outside the display unit, and the third dummy color filter may be located closer to the display unit than the second dummy color filter.

As described above, when the connection portion is formed, the number of cutting of the laser may be reduced, thereby reducing the repair time.

In addition, by removing the color filter of the laser short-circuit portion, it is possible to prevent the short circuit between the common electrode and the pixel electrode due to impurities, thereby minimizing the phenomenon that the potential is distorted.

1 is a layout view illustrating one pixel of a liquid crystal display according to an exemplary embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.
3 is a layout view illustrating only a sustain electrode in the pixel of FIG. 1.
4 is a layout view illustrating an arrangement of a color filter according to an exemplary embodiment of the present invention.
5 and 6 are layout views of a thin film transistor array panel according to an exemplary embodiment of the present invention, and include the pixel of FIG. 1.
7 is a layout view illustrating a method of repairing a disconnected data line.
8 and 10 are layout views sequentially illustrating a method of forming a color filter according to an embodiment of the present invention.
9 is a plan view of an optical mask according to an embodiment of the present invention.
11 is a plan view of an optical mask according to an embodiment of the present invention.
12 to 14 are layout views sequentially illustrating a method of forming a color filter according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Like parts are designated by like reference numerals throughout the specification. When a portion of a layer, film, region, plate, etc. is said to be "on top" of another portion, this includes not only being "just above" another portion, but also having another portion in the middle. On the contrary, when a part is "just above" another part, there is no other part in the middle.

Hereinafter, a liquid crystal display according to a first exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a layout view illustrating one pixel of a liquid crystal display according to an exemplary embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1, and FIG. 3 is a storage electrode of the pixel of FIG. 1. A layout showing the bay.

1 and 2, a liquid crystal display according to an exemplary embodiment of the present invention may include a thin film transistor array panel 100 and a common electrode panel 200 facing each other, and a liquid crystal layer formed therebetween. )

First, the thin film transistor array panel 100 will be described.

In the thin film transistor array panel 100, a plurality of gate conductors including a gate line 121 and sustain electrodes 133a, 133b, and 133c are formed on the transparent insulating substrate 110.

The gate line 121 mainly extends in the horizontal direction and transmits a gate signal. The gate line 121 includes a gate electrode 124 protruding from the gate line 121. The gate line 121 includes a protrusion 2 protruding separately from the gate electrode 124. The protruding portion 2 may overlap with the drain electrode described later to form a storage capacitor.

The storage electrode includes a first storage electrode 133a, a second storage electrode 133b, a third storage electrode 133c, and a pair of connection portions 33.

The storage electrode is not provided with a separate reference numeral, but for ease of explanation, the storage electrode may include all of the first storage electrode 133a, the second storage electrode 133b, the third storage electrode 133c, and the connection part 33. In this case, the sustain electrodes 133a, 133b, 133c, and 33 may be referred to as reference numerals.

1 and 3, the first storage electrode 133a extends in the same direction as the gate line 121, and both ends of the first storage electrode 133a are respectively formed. One end of the second sustain electrode 133b and the third sustain electrode 133c is connected.

The second storage electrode 133b is spaced apart from each other and includes a left second storage electrode 133ba and a right second storage electrode 133bb that are connected by the connection part 33. The left second sustain electrode 133ba and the right second sustain electrode 133bb are inverted symmetrically, one end of each end is connected to the first sustain electrode 133a, and the other end is the first sustain electrode 133a. ) Is not connected. For ease of explanation, one end connected to the first storage electrode 133a is called a fixed end, and one end not connected is called a free end.

The left second sustain electrode 133ba and the right second sustain electrode 133bb of the second sustain electrode 133b are positioned between the fixed end and the free end, respectively, and include the first bent part G1, the linear part G2, and the first bent part. It includes two curved portions G3.

The connecting portion 33 may have a first diagonal portion S1 and a right second portion extending from the first curved portion G1 and the second curved portion G3 of the left second storage electrode 133ba toward the data line 171, respectively. The second curved portion S2 extends from the first curved portion G1 and the second curved portion G2 of the sustain electrode 133bb toward the data line 171.

The pair of connecting portions 33 include first and second connecting portions positioned adjacent to two neighboring gate lines, respectively.

The first diagonal portion S1 and the second diagonal portion S2 are inclined obliquely with respect to the data line 171, and the connecting portion 33 includes the first diagonal portion S1 and the second diagonal portion S2. ) Forms a ∧ or ∨.

Referring back to FIGS. 1 and 2, a gate insulating layer 140 is formed on the gate conductor.

A plurality of linear semiconductors (not shown) may be formed on the gate insulating layer 140, which may be made of amorphous silicon, crystalline silicon, or the like. The linear semiconductor includes a semiconductor 154 extending mainly in the longitudinal direction and connected to the gate electrode 124 and connected to each other.

A pair of ohmic contacts 163 and 165 are positioned on the semiconductor 154.

The ohmic contacts 163 and 165 may be made of a material such as n + hydrogenated amorphous silicon in which n-type impurities such as phosphorus are heavily doped, or may be made of silicide.

A data conductor including a plurality of data lines 171 and a plurality of drain electrodes 175 is formed on the ohmic contacts 163 and 165 and the gate insulating layer 140.

The data line 171 transmits a data signal and mainly extends in the vertical direction to cross the gate line 121. Each data line 171 includes a source electrode 173 extending toward the gate electrode 124.

The drain electrode 175 extends in the horizontal direction and includes a rod portion facing the source electrode 173 and an extension portion protruding from the rod portion.

The source electrode 173 is bent in a U-shape or a U-shape and surrounds one end of the rod-shaped portion of the drain electrode 175.

The gate electrode 124, the semiconductor 154, the source electrode 173, and the drain electrode 175 form a thin film transistor Q, and the channels of the thin film transistor are the source electrode 173 and the drain electrode 175. It is formed in the semiconductor 154 between.

Although not shown, the linear semiconductor is positioned below the data line 171. According to the process of forming the thin film transistor, the linear semiconductor may not be formed and may have an island shape overlapping with the gate electrode 124, the drain electrode 175, and the source electrode 173.

A passivation layer 180 made of an organic insulator is formed on the data conductor. The passivation layer 180 may include a first contact hole 185 exposing an extension of the drain electrode 175, a second contact hole 183 and a third contact hole exposing fixed and free ends of the second storage electrode 133b, respectively. 184 is formed.

A plurality of pixel electrodes on the passivation layer 180 may be made of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), or a reflective metal such as aluminum, silver, chromium, or an alloy thereof. 191, a connecting leg 83 is formed.

The pixel electrode 191 is connected to the drain electrode 175 through the first contact hole 185 and receives a data signal through the drain electrode 175.

The pixel electrode 191 is formed in a substantially quadrangular shape, and a vertical boundary line may be positioned on the second storage electrode 133b and the third storage electrode 133c which are formed vertically among the storage electrodes.

The connecting leg 83 crosses the gate line 121 and is positioned at two pixel areas opposite to the gate line 121 through the second contact hole 183 and the third contact hole 184. The second sustain electrode 133b is connected.

An alignment layer 11 is formed on the pixel electrode 191, and the alignment layer 11 may be a horizontal alignment layer.

Next, the common electrode display panel 200 will be described.

The light blocking member 220 is formed on the transparent insulating substrate 210 of the common electrode display panel 200. The light blocking member 220 is to prevent light leakage and is formed to correspond to the upper portion of the gate line 121, the data line 171, the thin film transistor Q, and the storage electrodes 133a, 133b, and 133c.

The color filter 230 is formed on the light blocking member 220. The color filter 230 is for realizing the color of the liquid crystal display, and for example, three primary colors of red, green, and blue may be repeatedly arranged. The color filter 230 may be formed long along the data line 171.

The color filter 230 will be described in more detail with reference to FIGS. 1 and 4.

4 is a layout view illustrating an arrangement of a color filter according to an exemplary embodiment of the present invention.

1 and 4, the color filter 230 includes a concave portion C on the right or left side of the portion corresponding to the pixel area when viewed in the planar pattern of the color filter 230.

In the color filter 230 displaying the same color in the entire color filter display panel 200, recesses on the left and right sides are alternately disposed.

That is, referring to FIG. 4, if the first red color filter has a recess on the right side, the second red color filter has a recess on the left side.

The recess C is disposed to expose a point where the data line 171 and the connection 33 intersect. In this case, the concave portions C of the two neighboring color filters 230 are disposed to face each other, and a point where the data line 171 and the connection portion 33 intersect within a boundary line formed by the two concave portions C is positioned.

Meanwhile, the liquid crystal display device 10 according to an exemplary embodiment of the present invention includes a driving unit D2 including a display unit D1 for displaying an image and a driving circuit for controlling thin film transistors of the display unit D1 as shown in FIG. 4. It includes.

Referring to FIG. 4, a dummy color filter 23 is formed in the driving unit D2 according to an exemplary embodiment of the present invention.

The dummy color filter 23 includes a first dummy color filter 23a and a second dummy color filter 23b, and the first dummy color filter 23a and the second dummy color filter 23b are the display unit D1. It is located in the outer drive part D2. In this case, the first dummy color filter 23a and the second dummy color filter 23b are positioned at opposite sides of the display unit D1.

In an exemplary embodiment of the present invention, the driving unit D2 is positioned on both sides of the display unit D1, but the driving unit D2 may be disposed only at one side such as the left side or the right side of the display unit D1. . Therefore, the driving unit may not be located under the first dummy color filter 23a or the second dummy color filter 23b.

The color filter 230 according to an embodiment of the present invention may display three different colors, and may be referred to as a first color filter 230a, a second color filter 230b, and a third color filter 230c, respectively. In this case, the first dummy color filter 23a may be the same color as the first color filter 230a.

The second dummy color filter 23b may include a first small dummy color filter 23ba and a second small pile color filter 23bb, and the first small dummy color filter 23ba and the second small dummy color. The filter 23bb may be the same color as the second color filter 230b and the third color filter 230c, respectively.

In the exemplary embodiment of the present invention, since the red, green, and blue color filters are formed on the display, the first color filter 230a is the same color as any one of the red, green, and blue color filters formed on the display unit. 230b is the same color as one of the two colors except for the first color filter 230a, and the third color filter 230c is the other one except the first color filter 230a and the second color filter 230b. Is the same color as. For example, the first color filter 230a may be a green color filter, the second color filter 230b may be a red color filter, and the third color filter 230c may be a blue color filter.

The first dummy color filter 23a is formed to have the same width as the first color filter 230a, and the first small dummy color filter 23ba is formed to have the same width as the second color filter 230b. The two dummy color filter 23bb may be formed to have the same width as the third color filter 230c.

In this case, the first small dummy color filter 23ba and the second small dummy color filter 23bb are positioned apart from each other by the width of the first color filter 230a, and the first dummy color filter 23a is formed from the display unit D1. The widths of the second color filter 230b or the third color filter 230c are separated. The width of the color filter 230 is a length in the direction parallel to the gate line 121.

Meanwhile, the edges of the color filters 230 of two neighboring pixels may overlap each other as in FIG. 2, but may not overlap each other as in the edge where the concave portion C of FIG. 1 is formed. To form.

1 and 2, an overcoat 250 made of an organic material or the like is formed on the color filter 230 to planarize the substrate.

A common electrode 270 is formed on the lid 250. The common electrode 270 may be formed of a transparent conductive material such as a pixel electrode, and formed on the entire surface of the substrate.

When a constant voltage is applied to the common electrode 270, an electric field is generated in the liquid crystal layer according to the voltage applied to the pixel electrode 191 to determine the orientation of the liquid crystal molecules and control the polarization of incident light. Display the video.

An alignment layer 21 is formed on the common electrode 270, and the alignment layer 21 may be a horizontal alignment layer.

In order to reduce the number of data lines, the thin film transistor array panel according to an exemplary embodiment may transmit data signals of two pixels using one data line.

This will be described in detail with reference to FIGS. 5 and 6.

5 and 6 are layout views of a thin film transistor array panel according to an exemplary embodiment of the present invention, and include the pixel of FIG. 1.

The same reference numerals are used for the same parts as in FIG. 1, and for ease of explanation, alphabets such as a, b, and c are added after the reference numerals of FIG.

As shown in FIG. 5, the first gate line 121a having the first gate electrode 124a protruding in the upper direction and the second gate line 121b having the second gate electrode 124a protruding in the lower direction. ) Is formed.

The first gate electrode 124a and the second gate electrode 124b are positioned on an extension line of the third sustain electrode 133c.

In order to reduce the number of data lines, one data line 171 is formed every two pixel regions, and the source electrode 173 extends in the opposite direction about the data line 171.

The connection part 33 connects the left second storage electrode 133ba and the right second storage electrode 133bb across the data line 171.

The third sustain electrode 133c is located at a point bisecting the distance between two neighboring data lines 171, and overlaps the longitudinal sides of the two neighboring pixel electrodes 191.

The first sustain electrode 133a is alternately connected to the fixed end of the left second sustain electrode 133ba and the fixed end of the right second sustain electrode 133bb each time the column is changed. Therefore, the sustain electrodes 133a, 133b, and 133c each including the first sustain electrode, the second sustain electrode, and the third sustain electrode have a substantially square wave shape.

Meanwhile, the storage electrode is electrically connected to the storage electrodes of two neighboring pixels by the first storage electrode 133a and the connection part 33 in the horizontal direction, and is adjacent by the connection leg 83 in the vertical direction. The storage electrodes of the two pixels are electrically connected. Therefore, the sustain electrodes 133a, 133b, and 133c of the entire substrate maintain a uniform sustain voltage.

Meanwhile, as shown in FIG. 6, when the pixel electrode and the data line are connected, 2-dot inversion driving can be obtained. That is, two pixels positioned between two neighboring data lines 171 have the same polarity, and two pixels positioned opposite to the data line 191 have opposite polarities, and the first and second gate lines ( Two pixels located opposite each other with respect to 121a and 121b have opposite polarities. Although not shown, the thin film transistor extends from both sides of the data line 171 to the both sides of the source electrode 173, and thus the connection relationship between the pixel electrode 191 and the data line 171 may be known. The gate signal is received from the first gate line 121a or the second gate line 121b overlapping the electrode 173.

In this case, a planar pattern or a connection relationship between the pixel electrode and the thin film transistor of two pixels positioned at both sides of the data line may be inverted symmetry or mirror image symmetry with respect to the data line.

Then, when the data line of the liquid crystal display is disconnected, a method of repairing the disconnected data line will be described in detail with reference to FIG. 7.

FIG. 7 is a diagram for describing a method of repairing a disconnected data line, which is the same as FIG. 1, and thus a detailed description thereof will be omitted.

As shown in FIG. 7, a portion A of the data line 171 is disconnected in the data line 171.

When the data line 171 is disconnected as described above, the portion B where the data line 171 and the connection part 33 overlap is short-circuited using a laser. Then, any one of the left second sustain electrode 133ba or the right second sustain electrode 133bb of the second sustain electrode connected to the connection part 33 is cut (C).

In order to facilitate the description, the left second sustain electrode 133ba is cut in the embodiment of the present invention. And cut | disconnects C between the connection leg 83 and the 2nd curved part G3.

As described above, a portion where the connection portion 33 and the data line 171 overlap with each other using a laser is short-circuited, and a portion where the connection portion 33 and the left second sustain electrode 133ba are connected to the connection leg 83 and When cutting between the second curved legs G3, the data signal (dashed line) of FIG. 7 is transmitted through the right second storage electrode 133bb.

On the contrary, when the right second sustain electrode 133bb is cut, the data signal is transmitted through the left second sustain electrode 133ba.

As such, when the connection portion 33 is formed as in one embodiment of the present invention, the number of laser irradiation can be reduced to three portions that are cut by using a laser.

In addition, in the embodiment of the present invention, the color filter 230 is removed in the portion B which is short-circuited using a laser. Particles and the like may be generated when a short circuit or disconnection is performed using a laser, which may short circuit the common electrode and the pixel electrode, which may mainly occur at a part shorted by using a laser. Therefore, when the color filter is removed as in the exemplary embodiment of the present invention, since the gap between the common electrode and the pixel electrode is large, the common electrode and the pixel electrode may be prevented from being shorted due to the particles.

Meanwhile, a method of forming a color filter display panel according to an exemplary embodiment of the present invention will be described in detail.

8 and 10 are layout views sequentially showing a method of forming a color filter according to an embodiment of the present invention, Figure 9 is a plan view of an optical mask according to an embodiment of the present invention.

A method of forming a color filter of a color filter display panel according to an exemplary embodiment of the present invention will be described with reference to FIGS. 8, 10, and 4.

First, as shown in FIG. 8, a first photosensitive film (not shown) including a pigment is coated on the substrate 110, and then exposed and developed using a photomask to form a first color filter 230a. In this case, the pigment may be green, and a light blocking member is formed on the substrate 110.

In this case, the first dummy color filter 23a is formed outside the display unit D1 together with the first color filter 230a.

As shown in FIG. 9, the photomask MP includes a first transmission part T1 and a second transmission part T2 having a recessed portion C in which a part of the portion corresponding to the pixel area is concave.

The recesses of the first transmission part T1 and the second transmission part T2 are disposed to face each other, and the first transmission part T1 and the second transmission part T2 are separated by twice the width of the color filter 230.

Next, as shown in FIG. 10, a second photosensitive film (not shown) including a first pigment 230a and a different pigment is coated on the substrate, and then exposed and developed with a photomask MP to form a second color filter. To form 230b. The second photoresist film may comprise a red pigment.

At this time, the optical mask MP is horizontally moved as shown in FIG. 10 so that the concave portion C of the first color filter 230a and the concave portion C of the second color filter 230b may face each other. Place (MP).

Next, as shown in FIG. 4, a third photosensitive film (not shown) including a pigment different from the first color filter 230a and the second color filter 230b is coated on the substrate 110, and then, as a photomask. The third color filter 230c is formed by exposing and developing. The third photoresist film may include a blue pigment.

In this case, the photomask is formed to move horizontally as shown in FIG. 4, and the photomask is disposed such that the concave portion of the second color filter 230b and the concave portion of the third color filter 230a face each other.

Unlike the above embodiment, the color filter may be formed using the photomask of FIG. 11. 11 is a plan view of an optical mask according to an embodiment of the present invention.

Unlike the photomask of FIG. 9, the photomask of FIG. 11 does not face concave portions of the first transmission part T1 and the second transmission part T2.

12 to 14, a method of forming a color filter using the photomask of FIG. 12 will be described in detail.

12 to 14 are layout views sequentially illustrating a method of forming a color filter according to an embodiment of the present invention.

First, as illustrated in FIG. 12, a first photosensitive film (not shown) including a pigment is coated on the substrate 110, and then exposed and developed using a photomask to form a first color filter 230a. . In this case, the pigment may be red, and a light blocking member is formed on the substrate 110. At this time, the first small dummy color filter 23ba is formed together.

As shown in FIG. 11, the photomask MP includes a first transmission part T1 and a second transmission part T2 having a recessed part C in which a part of the portion corresponding to the pixel area is concave.

The concave portions of the first transmission portion T1 and the second transmission portion T2 are disposed not to face each other, and the first transmission portion T1 and the second transmission portion T2 are separated by twice the width of the color filter 230.

Next, as shown in FIG. 13, a second photosensitive film (not shown) including a first pigment 230a and a different pigment is coated on the substrate, and then exposed and developed with a photomask MP to form a second color filter. To form 230B. The second photosensitive film contains a blue pigment.

The photomask MP is horizontally moved as shown in FIG. 13 to arrange the photomask such that the recess C of the first color filter 230a and the recess C of the second color filter 230b are in opposite directions. do.

At this time, the second small dummy color filter 23bb is formed.

Next, as shown in FIG. 14, a third photosensitive film (not shown) including a pigment different from the first color filter 230a and the second color filter 230b is applied onto the substrate 110, and then, as a photomask. The third color filter 230c is formed by exposing and developing. The third photosensitive film contains a green pigment. The photomask is formed to move horizontally, and the photomask is disposed such that the recess of the second color filter 230b and the recess of the third color filter 230c face each other.

At this time, the first dummy color filter 23a is also formed.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

11. 21: alignment layer 33: connection portion
83: connection bridge 100: thin film transistor array panel
110: first substrate 121: gate line
121a: first gate line 121b: second gate line
124: gate electrode 124a: first gate electrode
124b: second gate electrode 133a: first sustain electrode
133b: second sustain electrode 133c: third sustain electrode
133ba: left second sustain electrode 133bb: right second sustain electrode
154: semiconductors 163 and 165: ohmic contacts
171: data line 171a: first data line
171b: second data line 173: source electrode
173a: first source electrode 173b: second source electrode
175: drain electrode 175a: first drain electrode
175b: second drain electrode 183: second contact hole
184: third contact hole 185: first contact hole
191: pixel electrode
200: common electrode display panel 210: second insulating substrate
220: light blocking member 230: color filter
230a: first color filter 230b: second color filter
230c: third color filter 250: overcoat
270 common electrode

Claims (37)

Insulation board,
A gate line and a sustain electrode on the insulating substrate;
A data line crossing the gate line and the storage electrode line;
A thin film transistor connected to the gate line and the data line,
A pixel electrode connected to the thin film transistor
Including,
The sustain electrode is a first sustain electrode parallel to the gate line,
A pair of second storage electrodes extending parallel to the data lines from the first storage electrodes and positioned at both sides of the data lines;
A connection part crossing the data line and connecting the pair of second sustain electrodes;
A connection bridge connecting the second storage electrode positioned in a neighboring pixel to cross the gate line;
Thin film transistor array panel comprising a.
In claim 1,
The second sustain electrode includes a fixed end connected to the first sustain electrode and a free end not connected to the first sustain electrode.
In claim 2,
The second sustain electrode may include a first bent part, a linear part, and a second bent part positioned between the fixed end and the free end.
4. The method of claim 3,
The connection part may include an oblique part extending from the first bent part and the second bent part toward the data line.
In claim 4,
The second storage electrode includes a left second storage electrode positioned on the left side and a right second storage electrode positioned on the right side of the data line,
The left second sustain electrode and the right second sustain electrode are inverted symmetrical with respect to the data line.
In claim 2,
The connection bridge connects the fixed end and the free end of two neighboring pixels.
In claim 6,
And the connection bridge is formed of the same material on the same layer as the pixel electrode.
In claim 1,
And the pixel electrode and the thin film transistor of two pixels positioned at both sides of the data line to have an inverted symmetry or a mirror image symmetry with respect to the data line.
The thin film transistor array panel of claim 5
Including,
In the thin film transistor array panel, the left second sustain electrode is separated from the connection part.
The overlapping portion of the data line and the connecting portion is short-circuited,
The connecting leg and the second bent portion are separated,
And a pixel electrode configured to receive a signal transmitted from the right second sustain electrode to the data line.
In the method of repairing the thin film transistor array panel of claim 5,
The connection part includes a first connection part and a second connection part positioned adjacent to two neighboring gate lines, respectively.
Cutting between the left second sustain electrode and the first connection part, between the left second sustain electrode and the second connection part, between the connection leg and the second bent part using a laser,
Short-circuiting a portion where the data line overlaps the first connection part and the second connection part by using the laser;
Repair method of the thin film transistor comprising a.
First insulating substrate,
A plurality of color filters positioned on the first insulating substrate,
A common electrode on the color filter,
A second insulating substrate facing the first insulating substrate,
A gate line and a storage electrode line positioned on the second insulating substrate;
A data line intersecting the gate line,
A thin film transistor connected to the gate line and the data line,
A pixel electrode connected to the thin film transistor
Including,
The color filter has a recess in which the color filter is removed,
And the concave portion is positioned at an intersection where the storage electrode line and the data line cross each other.
In claim 11,
The concave portions of two neighboring pixels face each other.
In claim 12,
The storage electrode line includes a first storage electrode and a second storage electrode extending along the data line from the storage electrode line;
The first storage electrode and the second storage electrode are on opposite sides of the data line.
In claim 11,
The first insulating substrate may include a display unit in which the pixel electrode is formed, a driver for applying a signal to the gate line and the data line;
A plurality of first and second dummy color filters positioned outside the display unit
Further comprising:
The first dummy color filter and the second dummy color filter are positioned opposite to each other with respect to the display unit.
The method of claim 14,
The color filter includes first to third color filters representing different colors,
The first dummy color filter represents the same color as the first color filter,
And the second dummy color filter further comprises a first small dummy color filter and a second small dummy color filter each representing the same color as the second color filter and the third color filter.
The method of claim 15,
The first dummy color filter includes a recess located in the display unit and facing a recess of the first color filter closest to the first dummy color filter.
And the first small dummy color filter and the second small dummy color filter respectively include recesses facing the first dummy color filter and the recesses.
The method of claim 15,
The first dummy color filter is formed to have the same width as the first color filter,
The first small dummy color filter is formed to have the same width as the second color filter.
And the second small dummy color filter is formed to have the same width as that of the third color filter.
The method of claim 17,
And the first small dummy color filter and the second small pile color filter are spaced apart by the width of the first color filter.
The method of claim 17,
And the first dummy color filter is spaced apart from the display by the width of the second color filter or the third color filter.
The method of claim 15,
The first color filter is a green color filter,
The second color filter is a red color filter,
The third color filter is a blue color filter,
And the first small dummy color filter is positioned closer to the display unit than the second small dummy color filter.

The method of claim 14,
The color filter includes first to third color filters representing different colors,
The first dummy color filter represents the same color as the second color filter,
And the second dummy color filter further comprises a first small dummy color filter and a second small dummy color filter each having the same color as the first color filter and the third color filter.
22. The method of claim 21,
The first dummy color filter may include a recess formed at the same position as the recess of the first color filter positioned adjacent to the first dummy color filter.
And a concave portion of the first small dummy color filter and the second small dummy color filter are formed at positions in the same direction.
22. The method of claim 21,
The first dummy color filter is formed to have the same width as the second color filter.
The first small dummy color filter is formed to have the same width as the first color filter.
And the second small dummy color filter is formed to have the same width as that of the third color filter.
The method of claim 23,
And the first small dummy color filter and the second small pile color filter are spaced apart from each other by the width of the second color filter.
The method of claim 23,
And the first dummy color filter is spaced apart from the display by the width of the first color filter or the third color filter.
22. The method of claim 21,
The first color filter is a red color filter,
The second color filter is a blue color filter,
The third color filter is a green color filter,
And the first small dummy color filter is positioned closer to the display unit than the second small dummy color filter.
A first step of forming a first photoresist film containing a pigment on an insulating substrate including a plurality of pixel regions forming an N × M matrix,
A second step of forming a first color filter by aligning a photomask on the first photoresist film and then exposing and developing the photomask;
A third step of forming a second photoresist film on the insulating substrate, the second photoresist film comprising a pigment different from the first photoresist film,
A fourth step of horizontally aligning the photomasks by two columns on the second photoresist film,
A fifth step of forming a second color filter by exposing and developing the second photosensitive film through the photomask;
Including,
The photomask corresponding to the pixel region, and including a first transmission region and a second transmission region having a concave portion,
The first transmission region and the second transmission region are in mirror image symmetry,
In the second step, the second transmission region corresponds to a second row,
The method of claim 4, wherein the first transmission region corresponds to a first column.
28. The method of claim 27,
In the fourth step,
And the photomask arranges the first transmission region in a left column of a column corresponding to the second transmission region in the second step.
28. The method of claim 27,
In the fourth step,
And a concave portion of the first transmission region of the photomask facing the concave portion of the first color filter including a concave portion formed in the second transmission region formed in the second step.
28. The method of claim 27,
The plurality of pixel areas form a display unit for displaying an image.
The first color filter formed in the first step further comprises a first dummy color filter positioned outside the display unit.
The method of claim 30,
In the second step,
And the first transmission area corresponds to the dummy color filter outside the display unit.
The method of claim 31,
In the sixth step,
And a photomask arranged such that the first transmission region corresponds to the N columns.
32. The method of claim 32,
And the second color filter is a red color filter.
The method of claim 33,
And the first color filter is a green color filter.
The method of claim 34,
A sixth step of forming a third photosensitive film including a blue pigment on the insulating substrate,
A seventh step of forming a third color filter by aligning a photomask on the third photoresist layer, and then exposing and developing the photomask;
Method for producing a color filter further comprising.
The method of claim 35,
The third color filter formed in the sixth step further includes a second dummy color filter positioned outside the display unit.
The method of claim 36,
The first color filter formed in the fourth step further includes a third dummy color filter positioned outside the display unit.
And the third dummy color filter is located closer to the display portion than the second dummy color filter.

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