KR20180049823A - Thin film transistor array panel, liquid crystal display, method to repair thereof, coror filter array panel and method of fabrication thereof - Google Patents

Abstract

The present invention provides a thin film transistor display panel which simplifies a repairing process and can minimize short-circuit due to impurities generated by a laser process, a liquid crystal display device and a repairing method thereof. The liquid crystal display device according to the present invention comprises: a first insulating substrate; a plurality of color filters located above the first insulating substrate; a common electrode located above the color filter; a second insulating substrate facing the first insulating substrate; a gate line and a maintaining electrode line located above the second 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. The color filter has a concave part in which the color filter is eliminated, wherein the concave part is located at an intersection point in which the maintaining electrode line and the data line cross each other.

Description

TECHNICAL FIELD [0001] The present invention relates to a thin film transistor display panel, a liquid crystal display device, a repair method thereof, a color filter display panel, and a method of manufacturing the same. BACKGROUND OF THE INVENTION [0002]

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

Description of the Related Art [0002] Liquid crystal displays (LCDs) are one of the most widely used flat panel display devices. They are composed of two substrates on which electrodes are formed and a liquid crystal layer interposed therebetween, To adjust the amount of transmitted light by rearranging the liquid crystal molecules of the liquid crystal molecules.

A thin film transistor (TFT) substrate, which is one of the two substrates constituting a liquid crystal display, is a circuit substrate for independently driving each pixel in a liquid crystal display or an organic light emitting diode (OLED) Is used.

The thin film transistor substrate includes gate lines for transmitting gate signals and data lines for transmitting data signals, thin film transistors connected to gate lines and data lines, and pixel electrodes connected to thin film transistors.

In the case where the wiring of such a liquid crystal display device is disconnected or short-circuited, the corresponding pixel becomes a defective pixel and it is necessary to carry out a repair process. There is a problem that the corrected pixel and its peripheral pixels are lower or higher in luminance than the normal pixel.

Therefore, in order to repair a data line, a plurality of laser cutting and laser shorting processes are required. In particular, when a defective pixel occurs due to a broken data line, There is a problem that the repair time is increased.

In addition, since the impurities are separated from the conductive material, the common electrode and the pixel electrode, or the common electrode and the data line are short-circuited to cause image quality defects.

Accordingly, it is an object of the present invention to provide a thin film transistor display panel, a liquid crystal display device, and a repair method that can simplify the repair process and minimize a short circuit caused by impurities generated by a laser process.

The thin film transistor panel according to the present invention includes an insulating substrate, a gate line and a sustain electrode disposed on the insulating substrate, a data line crossing the gate line and the sustain electrode line, a thin film transistor connected to the gate line and the data line, A first sustain electrode arranged in parallel with the gate line, a pair of second sustain electrodes extending in parallel to the data line from the first sustain electrode and positioned on both sides of the data line, A connecting portion connecting the pair of second sustain electrodes across the data line, and a connecting leg connecting the second sustain electrode located at the neighboring pixel across the gate line.

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

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

The connection portion may include a slanting portion extending from the first curved portion and the second curved portion toward the data line.

The second sustain electrode includes a left second sustain electrode positioned on the left side of the data line and a second sustain electrode positioned on the right side of the data line. The second left sustain electrode and the right second sustain electrode are connected to the data line As shown in FIG.

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

The connection leg may be formed of the same material as the pixel electrode.

The pixel electrodes and the thin film transistors of two pixels located on both sides of the data line may be inversely symmetric or mirror-symmetric with respect to the data line.

According to another aspect of the present invention, there is provided a thin film transistor display panel in which a left second sustain electrode is separated from a connection portion, a portion where a data line and a connection portion overlap each other is short-circuited, a connection leg and a second curved portion are separated, And a pixel electrode for receiving a signal transmitted from the second sustain electrode to the data line.

According to another aspect of the present invention, there is provided a method of repairing a thin film transistor display panel, the method comprising: connecting a first connection portion and a second connection portion adjacent to two neighboring gate lines, Cutting the connection leg and the second bent portion between the first connection portion, the second left sustain electrode and the second connection portion, shorting the portion where the data line and the first connection portion and the second connection portion overlap using the laser .

According to another aspect of the present invention, there is provided a liquid crystal display comprising a first insulating substrate, a plurality of color filters disposed on the first insulating substrate, a common electrode disposed on the color filter, a second insulating substrate facing the first insulating substrate, A gate line and a sustain electrode line 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, And the concave portion is located at an intersection point where the sustain electrode line and the data line cross each other.

The concave portions of two neighboring pixels may face each other.

The sustain electrode line includes a first sustain electrode and a second sustain electrode extending from the sustain electrode line along the data line, and the first sustain electrode and the second sustain electrode are located on the opposite sides with respect to the data line.

The first insulating substrate may further include a display portion on which the pixel electrode is formed, a driving portion for applying a signal to the gate line and the data line, and a plurality of first dummy color filters and a second dummy color filter located outside the display portion , The first dummy color filter and the second dummy color filter may be located on the opposite sides with respect to the display section.

Wherein the color filter comprises first to third color filters that represent different colors, the first dummy color filter has the same color as the first color filter, the second dummy color filter has the same color as the first color filter, And a first small dummy color filter and a second small dummy color filter having the same color as the third color filter.

Wherein the first dummy color filter includes a concave portion located on the display portion and facing a concave portion of the first color filter closest to the first dummy color filter, the first small dummy color filter and the second small dummy color filter May include a concave portion facing the concave portion with the first dummy color filter, respectively.

Wherein 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, As shown in FIG.

The first small dummy color filter and the second small dummy color filter may be located apart from each other by a width of the first color filter.

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

Wherein 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 pile color filter is adjacent to the display portion .

Wherein the first dummy color filter and the second dichroic filter are disposed in a first color filter and a second color filter, respectively, wherein the color filter includes first to third color filters that represent different colors, the first dummy color filter has the same color as the second color filter, And a first small dummy color filter and a second small dummy color filter that exhibit the same color as the third color filter.

Wherein the first dummy color filter includes a concave portion located at the same position as the concave portion of the first color filter which is located on the display portion and is closest to the first dummy color filter, The concave portion of the color filter may be formed in the same position.

Wherein the first dummy color filter is formed to have the same width as that of the second color filter, the first small dummy color filter is formed to have the same width as the first color filter, As shown in FIG.

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

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

Wherein 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 pile color filter is adjacent to the display portion .

According to another aspect of the present invention, there is provided a method of fabricating a color filter, comprising the steps of: forming a first photoresist layer including a pigment on an insulating substrate including a plurality of pixel regions forming an NxM matrix; A second step of forming a first color filter by aligning the first photoresist layer and the second photoresist layer, and then forming a second photoresist layer including a pigment different from the first photoresist layer on the insulating substrate; And a fifth step of exposing and developing the second photoresist film through a photomask to form a second color filter, wherein the photomask corresponds to the pixel region, and the concave portion Wherein the first transmission region and the second transmission region have a first transmission region and a second transmission region, wherein the first transmission region and the second transmission region are in mirror image symmetry; in a second step, the second transmission region corresponds to a second column, In the first transmission region corresponds to the first column.

In the fourth step, the optical mask may align the first transmissive area in the left column of the column corresponding to the second transmissive area in the second step.

In the fourth step, the concave portion of the first transmissive area of the optical mask may be arranged to face the concave portion of the first color filter including the concave portion formed in the second transmissive area formed in the second step.

The plurality of pixel regions may be 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 located outside the display unit.

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

In the sixth step, the optical mask may be arranged such that the first transmission region corresponds to the N columns.

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

A third step of forming a third photoresist layer including a blue pigment on the insulating substrate, and a seventh step of forming a third color filter by aligning the photomask on the third photoresist layer and exposing and developing the third photoresist layer.

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

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

As described above, when the connection portion is formed, the number of times of laser cutting can be reduced, and the repairing time can be reduced.

Further, by removing the color filter of the laser short-circuited portion, a short circuit between the common electrode and the pixel electrode due to impurities can be prevented, and the phenomenon that the potential is distorted can be minimized.

1 is a layout diagram showing one pixel of a liquid crystal display according to an embodiment of the present invention.
2 is a cross-sectional view taken along the line II-II in FIG.
3 is a layout diagram showing only a sustain electrode in the pixel of FIG.
4 is a layout diagram showing the arrangement of color filters according to an embodiment of the present invention.
FIG. 5 and FIG. 6 are arrangement diagrams of a thin film transistor panel according to an embodiment of the present invention, and include the pixel of FIG.
7 is a layout diagram for explaining a method of repairing a disconnected data line.
FIGS. 8 and 10 are arrangements showing, in order, a method of forming a color filter according to an embodiment of the present invention.
9 is a plan view of a light mask according to an embodiment of the present invention.
11 is a plan view of a light mask according to an embodiment of the present invention.
FIGS. 12 to 14 are arrangements showing, in order, 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, which will be readily apparent to those skilled in the art to which the present invention pertains. 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 is enlarged to clearly represent the layers and regions. Like parts are designated with like reference numerals throughout the specification. When a portion of a layer, a film, an area, a plate, or the like is referred to as being "above" another portion, this includes not only the portion immediately above the other portion but also another portion in between. Conversely, when a part is "directly on top of" another part, it means that there is no other part in the middle.

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

1 is a cross-sectional view taken along line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along line II-II in FIG. 1, Fig.

1 and 2, a liquid crystal display according to an exemplary embodiment of the present invention includes a thin film transistor panel 100, a common electrode panel 200 facing each other, a liquid crystal layer (not shown) ).

First, the thin film transistor display panel 100 will be described

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

The gate line 121 extends mainly in the lateral direction and carries 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 can overlap the drain electrode to be described later to form a storage capacitor.

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

Although the sustain electrodes are not designated by the same reference numerals, the first sustain electrodes 133a, the second sustain electrodes 133b, the third sustain electrodes 133c, and the connection portions 33 are all included These electrodes may be referred to as sustain electrodes 133a, 133b, 133c, and 33, including these reference numerals.

1 and 3, the first sustaining electrode 133a extends in the same direction as the gate line 121, and both ends of the first sustaining electrode 133a extend in the same direction And is connected to one end of the second sustain electrode 133b and the third sustain electrode 133c.

The second sustain electrode 133b includes a left second sustain electrode 133ba and a right second sustain electrode 133bb that are spaced apart from each other by a predetermined distance and connected by a connection portion 33. [ One end of each of the left and right second sustain electrodes 133ba and 133bb is connected to the first sustain electrode 133a and the other end thereof is connected to the first sustain electrode 133a ). One end connected to the first sustain electrode 133a is referred to as a fixed end for ease of explanation, and a non-connected end is referred to as a free end.

The left second sustain electrode 133ba and the right second sustain electrode 133bb of the second sustain electrode 133b are located between the fixed end and the free end respectively and include the first curved portion G1, the linear portion G2, 2 bent portion G3.

The connecting portion 33 is connected to the first oblique portion S1 extending from the first curved portion G1 and the second curved portion G3 of the left second sustaining electrode 133ba toward the data line 171, And a second oblique portion S2 extending from the first bent portion G1 and the second bent portion G2 of the sustain electrode 133bb toward the data line 171. [

The pair of connection portions 33 includes a first connection portion and a second connection portion which are positioned adjacent to two neighboring gate lines, respectively.

The first oblique portion S1 and the second oblique portion S2 are obliquely inclined with respect to the data line 171 and have a connecting portion 33 including a first oblique portion S1 and a second oblique portion S2 ) Form ∧ or ∨ shape.

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

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

A pair of ohmic contacts 163 and 165 is located on the semiconductor 154. [

The resistive contact members 163 and 165 may be made of a material such as n + hydrogenated amorphous silicon, or may be made of silicide, which is heavily doped with phosphorous n-type impurities.

A data conductor including a plurality of data lines 171 and a plurality of drain electrodes 175 is formed on the resistive contact members 163 and 165 and the gate insulating film 140. [

The data line 171 transmits a data signal and may extend in a longitudinal direction and 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 transverse direction and includes a rod portion facing the source electrode 173 and an extension protruding from the rod portion.

The source electrode 173 is bent in a ⊂ shape or a 형 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 constitute the thin film transistor Q. The channel of the thin film transistor is connected to the source electrode 173 and the drain electrode 175, As shown in FIG.

Although not shown, the linear semiconductor is located below the data line 171. The linear semiconductor may be formed so as to have a island shape overlapping the gate electrode 124, the drain electrode 175, and the source electrode 173 in accordance with the process of forming the thin film transistor.

A protective film 180 made of an organic insulating material is formed on the data conductor. The protective film 180 is provided with a first contact hole 185 for exposing the extension of the drain electrode 175, a second contact hole 183 for exposing the fixed and free ends of the second sustain electrode 133b, 184 are formed.

A plurality of pixel electrodes (not shown) may be formed on the passivation layer 180, such as a transparent conductive material such as ITO (indium tin oxide) or IZO (indium zinc oxide), or a reflective metal such as aluminum, silver, 191 and a connecting leg 83 are formed.

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

The pixel electrode 191 is formed in a substantially rectangular shape and the vertical boundary line may be located on the second sustain electrode 133b and the third sustain electrode 133c which are vertically formed in the sustain electrode.

The connection leg 83 is located across the gate line 121 and is located in two pixel regions located on opposite sides of the gate line 121 through the second contact hole 183 and the third contact hole 184 And the second sustain electrodes 133b are connected.

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

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

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

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

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

4 is a layout diagram showing the arrangement of color filters according to an embodiment of the present invention.

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

The color filters 230 displaying the same color as the entire color filter display panel 200 are alternately arranged with left and right concave portions.

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

The concave portion C is arranged to expose a point where the data line 171 and the connecting portion 33 intersect. At this time, the concave portion C of the neighboring two color filters 230 are arranged to face each other and the intersection of the data line 171 and the connection portion 33 is located within the boundary between the two concave portions C.

4, a liquid crystal display 10 according to an embodiment of the present invention includes a display unit D1 for displaying an image and a driving unit D2 including a driving circuit for controlling the thin film transistors of the display unit D1, .

Referring to FIG. 4, a dummy color filter 23 is formed in the driving unit D2 according to an 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 include a display portion D1, And is located at the outside driving portion D2. At this time, the first dummy color filter 23a and the second dummy color filter 23b are located on the opposite sides with respect to the display portion D1.

The driving unit D2 may be disposed at any one of the left and right sides of the display unit D1, although the driving unit D2 is disposed on both sides of the display unit D1 in the embodiment of the present invention . 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 exemplary 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, 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 dummy color filter 23bb and may include a first small dummy color filter 23ba and a second small dummy color filter 23ba, The filter 23bb may be the same color as the second color filter 230b and the third color filter 230c, respectively.

In the 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 of the red, green, and blue color filters formed on the display unit, The third color filter 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 same color as the other one except for the first color filter 230a and the second color filter 230b Is the same color. 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 that of 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 small dummy color filters 23bb may be formed to have the same width as the third color filters 230c.

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

2, the edge of the color filter 230 of the neighboring two pixels may be superimposed as shown in FIG. 2, but may not be superimposed as in the edge where the concave portion C of FIG. 1 is formed. .

1 and 2, a cover film 250 made of an organic material or the like is formed on the color filter 230 in order to flatten 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 is 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 in accordance with the voltage applied to the pixel electrode 191 in opposition to the pixel electrode 191 to determine the orientation of the liquid crystal molecules and to control the polarization of the incident light Display the image.

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

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

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

FIG. 5 and FIG. 6 are arrangement diagrams of a thin film transistor panel according to an embodiment of the present invention, and include the pixel of FIG.

1 are denoted by the same reference numerals, and alphabetic characters such as a, b, and c are added after the reference numerals in FIG. 1 according to the order of description or the position in which the characters are formed.

5, a first gate line 121a having a first gate electrode 124a protruding upward and a second gate line 121b having a second gate electrode 124a protruding downward Is formed.

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

One data line 171 is formed for each of two pixel regions to reduce the number of data lines, and the source electrode 173 extends in the opposite direction about the data line 171.

The connection portion 33 connects the second left sustain electrode 133ba and the right second sustain electrode 133bb across the data line 171. [

The third sustain electrode 133c is located at a position 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 every time the column is changed. Therefore, the sustain electrodes 133a, 133b, and 133c formed of the first sustain electrode, the second sustain electrode, and the third sustain electrode form a substantially square wave shape.

On the other hand, the sustain electrodes are electrically connected to the sustain electrodes of neighboring two pixels by the first sustain electrodes 133a and the connection portions 33 in the horizontal direction, and the sustain electrodes are electrically connected to the sustain electrodes in the vertical direction by the connection legs 83 The sustain 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.

On the other hand, when the pixel electrode and the data line are connected as shown in FIG. 6, a two dot inversion driving can be obtained. That is, two pixels located between two neighboring data lines 171 have the same polarity. Two pixels located on the opposite sides of the data line 191 have opposite polarities, and the first and second gate lines 121a and 121b are opposite to each other. Though not shown in the figure, the connection relationship between the pixel electrode 191 and the data line 171 can be known from the data line 171 through both the source electrode 173 and the pixel electrode 191, The gate signal is received from the first gate line 121a or the second gate line 121b overlapping with the electrode 173.

At this time, the plane patterns or connection relations of the pixel electrodes and the thin film transistors of the two pixels located on both sides of the data line can be inversely symmetric or mirror-symmetric with respect to the data line.

A method of repairing a disconnected data line when the data line of the liquid crystal display device is disconnected will be described in detail with reference to Fig.

7 is a diagram for explaining a method of repairing a disconnected data line, which is the same as that of 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 from the data line 171. In Fig.

When the data line 171 is disconnected, the portion B where the data line 171 and the connection portion 33 are overlapped is short-circuited by using the laser. Then, either the left second sustain electrode 133ba or the right second sustain electrode 133bb of the second sustain electrode connected to the connection portion 33 is cut off (C).

For ease of explanation, the left second sustain electrode 133ba is cut in the embodiment of the present invention. Then, the connection leg 83 and the second bent portion G3 are cut off (C).

A portion where the connection portion 33 and the data line 171 overlap each other is short-circuited by using a laser and the portion where the connection portion 33 and the left second sustain electrode 133ba are connected and the connection leg 83 When the second bent leg G3 is cut, the data signal (dotted line) of FIG. 7 is transmitted through the right second sustain electrode 133bb.

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

As described above, when the connection portion 33 is formed as in the embodiment of the present invention, the number of laser irradiation times can be reduced as compared with the conventional method.

In the embodiment of the present invention, the color filter 230 is removed from the portion B to be short-circuited by using the laser. Particles or the like may be generated when a laser is used for short-circuiting or disconnection. This may short-circuit the common electrode and the pixel electrode, which may occur mainly in a short-circuited portion using a laser. Therefore, when the color filter is removed as in the embodiment of the present invention, the gap between the common electrode and the pixel electrode is large, so that the common electrode and the pixel electrode can be prevented from being short-circuited due to the particles.

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

FIGS. 8 and 10 are a layout view showing a method of forming a color filter according to an embodiment of the present invention, and FIG. 9 is a plan view of a light 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 embodiment of the present invention will be described with reference to FIGS. 8, 10, and 4. FIG.

First, as shown in FIG. 8, a first photoresist layer (not shown) containing a pigment is applied on a substrate 110, and then exposed and developed using a photomask to form a first color filter 230a. At this time, the pigment may be green, and a light shielding member is formed on the substrate 110.

At this time, the first dummy color filter 23a is formed outside the display portion D1 together with the first color filter 230a.

The photomask MP includes a first transmitting portion T1 and a second transmitting portion T2 each having a concave portion C in which a part of the portion corresponding to the pixel region is concave as shown in Fig.

The first transmissive portion T1 and the second transmissive portion T2 are spaced apart from each other by two times the width of the color filter 230. The concave portions of the first transmissive portion T1 and the second transmissive portion T2 are opposed to each other.

As shown in FIG. 10, a second photoresist film (not shown) including a pigment different from the first color filter 230a is coated on the substrate, and exposed and developed with a photomask (MP) (230b). The second photoresist layer may include a red pigment.

10, the photomask MP is horizontally moved so that the concave portion C of the first color filter 230a and the concave portion C of the second color filter 230b face each other, (MP).

4, a third photoresist film (not shown) including a first color filter 230a and a second color filter 230b and a different pigment is applied on a substrate 110, And the third color filter 230c is formed by exposure and development. The third photoresist layer may include a blue pigment.

At this time, the optical mask is horizontally moved as shown in FIG. 4, and the optical mask 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 can be formed using the optical mask of FIG. 11 is a plan view of a light mask according to an embodiment of the present invention.

11, the recesses of the first transmissive portion T1 and the second transmissive portion T2 do not face each other unlike the photomask of FIG.

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

FIGS. 12 to 14 are arrangements showing, in order, a method of forming a color filter according to an embodiment of the present invention.

First, as shown in FIG. 12, a first photoresist layer (not shown) containing a pigment is applied on a substrate 110, and then exposed and developed using a photomask to form a first color filter 230a . At this time, the pigment may be red, and a light shielding member is formed on the substrate 110. At this time, a first small dummy color filter 23ba is formed together.

The optical mask MP includes a first transmitting portion T1 and a second transmitting portion T2 having a concave portion C in which a part of the portion corresponding to the pixel region is concave as shown in Fig.

The first transmissive portion T1 and the second transmissive portion T2 are spaced apart from each other by two times the width of the color filter 230. The concave portions of the first transmissive portion T1 and the second transmissive portion T2 do not face each other.

13, a second photoresist film (not shown) containing a pigment different from the first color filter 230a is coated on the substrate, and exposed and developed with a photomask (MP) to form a second color filter (230B). The second photoresist film includes a blue pigment.

The optical mask MP is moved horizontally as shown in FIG. 13 to arrange the optical mask such that the concave portion C of the first color filter 230a and the concave portion C of the second color filter 230b are opposite to each other do.

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

14, a third photoresist film (not shown) containing a pigment different from the first color filter 230a and the second color filter 230b is coated on the substrate 110, And the third color filter 230c is formed by exposure and development. The third photoresist film includes a green pigment. The optical mask is horizontally formed, and the optical mask is disposed so that the concave portion of the second color filter 230b and the concave portion of the third color filter 230c face each other.

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

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

11. 21: Orientation film 33:
83: connection leg 100: thin film transistor display 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: second left sustain electrode 133bb: right second sustain electrode
154: semiconductor 163, 165: resistive contact member
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:
200: common electrode panel 210: second insulating substrate
220: a light shielding member 230: a color filter
230a: first color filter 230b: second color filter
230c: third color filter 250: cover film
270: common electrode

Claims (27)

A first insulating substrate,
A plurality of color filters disposed on the first insulating substrate,
A common electrode disposed on the color filter,
A second insulating substrate facing the first insulating substrate,
A gate line and a sustain electrode line positioned on the second insulating substrate,
A data line crossing the gate line,
A thin film transistor connected to the gate line and the data line,
The pixel electrode connected to the thin film transistor
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Wherein the color filter has a concave portion from which the color filter is removed,
Wherein the concave portion is located at an intersection where the sustain electrode line and the data line cross each other.
The method of claim 1,
Wherein the concave portions of two neighboring pixels face each other.
3. The method of claim 2,
Wherein the sustain electrode line includes a first sustain electrode and a second sustain electrode extending from the sustain electrode line along the data line,
Wherein the first sustain electrode and the second sustain electrode are located on the opposite sides of the data line.
The method of claim 1,
Wherein the first insulating substrate includes a display portion 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 plurality of second dummy color filters
Further comprising:
Wherein the first dummy color filter and the second dummy color filter are located on the opposite sides of the display unit.
5. The method of claim 4,
Wherein the color filter includes first to third color filters that represent different colors,
Wherein the first dummy color filter has the same color as the first color filter,
Wherein the second dummy color filter further comprises a first small dummy color filter and a second small dummy color filter which exhibit the same color as the second color filter and the third color filter, respectively.
The method of claim 5,
Wherein the first dummy color filter includes a concave portion located in the display portion and facing a concave portion of the first color filter closest to the first dummy color filter,
Wherein the first small dummy color filter and the second small dummy color filter each include a concave portion facing the concave portion with the first dummy color filter.
The method of claim 5,
Wherein the first dummy color filter is formed to have the same width as the first color filter,
Wherein the first small pile 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 the third color filter.
8. The method of claim 7,
Wherein the first small dummy color filter and the second small dummy color filter are spaced apart from each other by a width of the first color filter.
8. The method of claim 7,
And the first dummy color filter is located away from the display section by a width of the second color filter or the third color filter.
The method of claim 5,
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,
Wherein the first small dummy color filter is positioned adjacent to the display unit than the second small dummy color filter.

5. The method of claim 4,
Wherein the color filter includes first to third color filters that represent different colors,
Wherein the first dummy color filter has 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 which exhibit the same color as the first color filter and the third color filter, respectively.
12. The method of claim 11,
Wherein the first dummy color filter includes a concave portion located at the same position as the concave portion of the first color filter which is located on the display portion and is the nearest to the first dummy color filter,
And the concave portions of the first small dummy color filter and the second small dummy color filter are formed in positions in the same direction.
12. The method of claim 11,
Wherein the first dummy color filter is formed to have the same width as the second color filter,
Wherein the first small pile 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 the third color filter.
The method of claim 13,
Wherein the first small dummy color filter and the second small dummy color filter are spaced apart from each other by a width of the second color filter.
The method of claim 13,
Wherein the first dummy color filter is located away from the display section by a width of the first color filter or the third color filter.
12. The method of claim 11,
Wherein 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,
Wherein the first small dummy color filter is positioned adjacent to the display unit than the second small dummy color filter.
A first step of forming a first photosensitive film including a pigment on an insulating substrate including a plurality of pixel regions forming an NxM matrix,
A second step of forming a first color filter by aligning a light mask on the first photosensitive film, exposing and developing the light mask,
A third step of forming a second photoresist layer on the insulating substrate, the second photoresist layer including a pigment different from the first photoresist layer;
A fourth step of horizontally moving and aligning the optical mask by two columns on the second photosensitive film,
A fifth step of exposing and developing the second photoresist film through the photomask to form a second color filter,
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Wherein the photomask includes a first transmissive region and a second transmissive region corresponding to the pixel region and having concave portions,
Wherein the first transmissive region and the second transmissive region form a mirror image symmetry,
In the second step, the second transmissive area corresponds to the second column,
In the fourth step, the first transmissive region corresponds to the first column.
The method of claim 17,
In the fourth step,
Wherein the optical mask aligns the first transmissive area in the left column of the column corresponding to the second transmissive area in the second step.
The method of claim 17,
In the fourth step,
Wherein the concave portion of the first transmissive area of the photomask is disposed so as to face the concave portion of the first color filter including the concave portion formed in the second transmissive area formed in the second step.
The method of claim 17,
Wherein the plurality of pixel regions constitute a display unit for displaying an image,
Wherein the first color filter formed in the first step further includes a first dummy color filter located outside the display portion.
20. The method of claim 20,
In the second step,
Wherein the first transmissive region corresponds to the dummy color filter outside the display section.
22. The method of claim 21,
In the sixth step,
And the optical mask is disposed such that the first transmissive region corresponds to the N columns.
The method of claim 22,
And the second color filter is a red color filter.
24. The method of claim 23,
Wherein the first color filter is a green color filter.
25. The method of claim 24,
A sixth step of forming a third photoresist layer 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,
Further comprising the steps of:
26. The method of claim 25,
Wherein the third color filter formed in the sixth step further includes a second dummy color filter located outside the display portion.
26. The method of claim 26,
Wherein the first color filter formed in the fourth step further comprises a third dummy color filter located outside the display,
Wherein the third dummy color filter is positioned closer to the display than the second dummy color filter.

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