KR100291505B1 - Liquid crystal display device - Google Patents

Abstract

PURPOSE: A liquid crystal display apparatus is provided to drive pixel at failure of a gate line by dividing into dual gate lines in the liquid crystal display, and to improve the yield rate by increasing redundancy with triangular arrangement of pixels. CONSTITUTION: A liquid crystal display is composed of plural data lines(D31-D36) arranged at regular intervals; plural gate lines(G31-G36) crossed over data lines, and divided into two gate lines; R,G,B dots(RD,GD,BD) divided into plural sub dots according to a couple of gate lines, and arranged in plural pixel ranges formed by data lines and gate lines; and switching units for driving R,G,B dots arranged in the pixel partition ranges according to sub dots, and connected to data lines and gate lines. The oblique graphic is displayed, and the color display is improved with forming the triangular arrangement by dividing the dot into two sub dots. The yield rate is increased with driving pixel by the other gate lines sequentially in failure of the gate line with the double gate line structure.

Description

LCD

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a pixel array structure having a triangle structure capable of displaying diagonal graphics.

The liquid crystal display device is composed of a color filter substrate expressing color by subtracting mixing of RGB, a TFT substrate for controlling each pixel, and a liquid crystal injected between the color filter substrate and the TFT substrate. The color filter substrate of the liquid crystal display device includes a plurality of pixels arranged in a matrix form of columns and rows. Each pixel consisted of a combination of red, green and blue dots.

Representative pixel array methods for arranging the pixels include a triangular array, a stripe array, and a mosaic array. The vertical stripe arrangement method as shown in FIG. 1 is mainly used for O / A.

Referring to FIG. 1, a plurality of gate lines G11, G12, G13,..., Arranged at a predetermined interval from each other in a vertical stripe array method are formed to extend in a column direction and are insulated from each other. The plurality of data lines D11, D12, D13, ... arranged at a predetermined interval from each other extend in a row direction to intersect the gate line, and are insulated from each other.

Further, in the pixel areas PS11 to PS13 formed by the data lines D11, D12, ... and the gate lines G11, G12, ..., respectively, R, G, B dots RD, GD, BD Are arranged to constitute one pixel.

In the pixel areas PS11 to PAS13, a dot in which a gate and a source or drain electrode are connected to a gate line and a data line at a portion where the data lines D11, D12,..., And the gate lines G11, G12,... The driving TFT switching elements T11, T12, and T13 are arranged respectively. Therefore, each R, G, B dot RD, GD, BD is arranged in one pixel area PS11, PS12, PS13, and each R, G, B dot is placed in each pixel area PS11-PS13. TFTs T11 to T13 for driving are arranged one by one, respectively.

Referring to the pixel array structure of FIG. 1, the R, G, and B dots RD, GD, and BD constituting one pixel are arranged in a vertical direction, respectively. That is, each of the R dots RD, G dots GD, and B dots BD is arranged in a straight line along the data line in the row direction.

The liquid crystal display device having the above vertical stripe array structure is a pixel array structure suitable for O / A, and its color implementation characteristics are not suitable for A / V as compared with the triangle array structure.

The triangle array structure of FIG. 2 is used in the liquid crystal display device as a pixel array structure for improving color implementation characteristics. In the liquid crystal display of FIG. 2, a plurality of gate lines G21, G22, G23,... Which are arranged at a predetermined interval from each other are elongated in the column direction, and are insulated from each other. In addition, a plurality of data lines D21, D22, D23, ... arranged at predetermined intervals are insulated from each other so as to cross the gate line, and are twisted in a row direction, that is, in a zig-zag form. Are arranged.

In addition, each of the pixel areas PS21 to PS23 formed by the data lines D21, D22, ..., and the gate lines G21, G22, ... has R, G, and B dots RD, GD, BD. ) Are arranged in triangle form.

Dots in which gates and source or drain electrodes are connected to gate lines and data lines at portions where the data lines D21, D22,..., And gate lines G21, G22,... The driving TFT switching elements T21-T23 are arranged. Also in the liquid crystal display of FIG. 2, as in FIG. 1, each of the R, G, and B dots RD, GD, and BD are arranged in one pixel area PS21, PS22, PS23, and each pixel area PS21-. In PS23, TFTs T21-T23 for driving each of the R, G, and B dots are arranged one by one.

The liquid crystal display device having the triangular pixel array structure of FIG. 2 has an advantage of superior color implementation characteristics as compared to the stripe pixel array structure of FIG. 1.

However, in the liquid crystal display device having a triangular array structure as shown in FIG. 2, since the data lines are arranged in a twisted shape, that is, in a zigzag shape, the data lines are longer than the data lines of FIG. As a result, the resistance of the data line is increased and the incidence of open defects of the data line is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to provide a pixel array structure of a liquid crystal display device having a redundancy function for open defects of data lines.

Another object of the present invention is to provide a liquid crystal display device having a triangular pixel array structure which is excellent in color implementation characteristics and capable of graphic display of diagonal lines.

Another object of the present invention is to provide a liquid crystal display device capable of reducing the RC delay of a data line than a conventional triangle pixel arrangement.

1 is a planar structure diagram of a liquid crystal display device having a pixel array structure of a conventional stripes;

2 is a planar structure diagram of a liquid crystal display device having a pixel array structure of a conventional triangle type;

3 is a planar structure diagram of a liquid crystal display device having a pixel array structure having a triangle shape according to an embodiment of the present invention;

(Explanation of symbols for the main parts of the drawing)

G11-G17, G21-G27, G31-G36: Gate line

D11-D16, D21-D26, D31-D36: Data Line

PS11-PS13, PS21-PS23, PS31-PS33: Pixel Area

T11-T13, T12-T23, T31-T33: TFT switching element

RD: R dot R1, R2: R subdot

GD: G dot G1, G2: G subdot

BD: B dot B1, B2: B subdot

In order to achieve the above object of the present invention, the present invention comprises a plurality of gate lines and data lines arranged to be spaced apart from each other; R, G, and B dots arranged in the pixel region formed by the data line and the gate line; A liquid crystal display device comprising R, G, and B dot driving switching elements arranged in a pixel area and connected to the data line and the gate line, wherein the data lines are separated into a pair of data lines, wherein each R, G and B dots are characterized in that a liquid crystal display device is divided into a plurality of subdots along the pair of data lines.

According to an embodiment of the present invention, the R, G, and B dots are divided into two sub dots so that the first sub dot is connected to the first data line of the pair of data lines, and the second sub dot is connected to the one pair of data lines. And a second data line of the data line.

According to an exemplary embodiment of the present invention, the R, G, and B dots are shifted by subdots along the gate line, and are arranged in a triangle shape. The R, G, and B dots are arranged in a zigzag pattern along the data line such that the first R, G, and B sub dots in the odd-numbered gate line are aligned with the second R, G, and B subdots in the even-numbered gate line. It is characterized in that each overlap.

According to an embodiment of the present invention, the separated pair of data lines are arranged in parallel with each other, and the same data line driving signal is applied and driven simultaneously.

According to an embodiment of the present invention, each R, G, and B dot is divided into two subdots along a pair of data lines. When each R, G, and B dot is divided into two subdots along a pair of data lines, the R, G, and B dots arranged on the odd-numbered gate line are divided by the second data line of the pair of data lines. In the even-numbered gate line, the R, G, and B dots are divided by the first data line of the pair of data lines.

According to an exemplary embodiment of the present invention, two switching elements are arranged for each of the R, G, and B dots, and one switching element drives one servo dot. The switching elements arranged two per dot are arranged between the even-numbered gate line and the odd-numbered data line so as to be located in opposite directions about the data line.

In addition, the present invention includes a plurality of gate lines arranged at a predetermined interval from each other; A plurality of data lines arranged at regular intervals to intersect the gate line and separated into a pair of data lines arranged in parallel with each other; R, G, and B dots arranged in the pixel region formed by the data line and the gate line and divided into subdots along the pair of data lines; A liquid crystal display device comprising one or more R, G and B dot driving switching elements arranged in the pixel area for each sub dot of each of the R, G, and B dots, and connected to the data line and the gate line. It is done.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 illustrates a liquid crystal display device having a pixel array structure having a triangle shape according to an embodiment of the present invention. Referring to FIG. 3, in the liquid crystal display according to the exemplary embodiment of the present invention, a plurality of gate lines G31, G32, G33,... Which are arranged at regular intervals are extended in the column direction and are insulated from each other. . The plurality of data lines D31, D32, D33, ... arranged at regular intervals from each other extend in a row direction to intersect the gate line and are insulated from each other.

In the present invention, each of the data lines D31, D32, ... is a pair of data lines D31a, D31b, D32a, D32b,... It is separated into a double data line structure. One pair of data lines D31a, D31b, D32a, D32b,... Each same data line drive signal is applied to the pair of data lines to be driven simultaneously.

Each pixel region P31 to P33 is divided into two regions P31a and P31b to P33a to P33b in the column direction by the dual data line structure. Therefore, each R, G, B dot RD, GD, BD is divided into two subdots R1, R2, G1, G2, and B1, B2, respectively, so that each pixel division region It is arranged in (P31a, P31b), (P32a, P32b), and (P33a, P33b), respectively.

At this time, the pixel areas P31 to P33 of each of the R, G, and B dots RD, GD, and BD have a pair of data lines 31a, 31b, 32a, 32b,... When divided by, the pixel regions P31-P33 of the R, G, and B dots arranged on the odd gate lines G31, G33, ... are formed of the second data lines 31b, 32b, 33b ...).

On the other hand, in the even-numbered gate lines G32, G34, ..., the pixel areas P31-P33 of the R, G, and B dots RD, GD, and BD have the first data line 31a, 32a of the pair of data lines. , 33a, ...).

Therefore, the R, G, and B dots are arranged in a zigzag pattern along the data line, and R, G, B in the odd-numbered gate lines (G1, G3, ...) and the even-numbered gate lines (G2, G4, ...). The subdots overlap each other.

That is, each of the first sub-dots R1 of the R dots RD in the odd-numbered gate lines G1, G3, ... is the second sub-dot R2 of the even-numbered gate lines G2, G4, ..., and the odd-numbered gate lines. The first sub-dot G1 of is a sub-dot G2 of the even-numbered gate line, and the first sub-dot B1 of the odd-numbered gate line overlaps the second sub-dot B2 of the even-numbered gate line, respectively.

In the liquid crystal display element according to the embodiment of the present invention, two dot driving TFT switching elements are arranged per dot. That is, one switching element is arranged per sub dot.

Therefore, in each pixel division region, the pair of data lines D31a and D31b, D32a and D32b,... At the intersection of the gate lines G1, G2, ..., the sub-dot driving TFT switching elements T31a, T31b, T32a, T32b, ..., each of which has a gate and a source or drain electrode connected to the gate line and the data line, respectively. Is arranged.

At this time, the TFT switching elements T31a and T31b, T32a and T32b for driving the respective subdots. Are arranged in opposite directions along the gate line. That is, switching elements in the odd-numbered gate lines G1, G3, ... and the even-numbered gate lines G2, G4, ... are arranged in opposite directions.

In the liquid crystal display of the present invention having the structure as described above, one dot is divided into two subdots and arranged in a zigzag form along the data line, and the two dots are shifted by subdots along the data line and adjacent to each other. Overlap between gate lines.

Each R, G, B dot in the odd gate line is shifted to the right by a subdot with respect to each dot of the even gate line, and each R, G, B dot in the even gate line is transferred to the odd gate line. Is shifted left by a subdot relative to

Accordingly, when a dot connected to the same data line is driven along the gate line, which is a scan line, a triangle pixel structure is formed.

For example, in the case of the first data line D31 consisting of a pair of lines D31a and D31b, since the subdots are shifted and overlapped with each other, the R dot RD is jig-based as the scan lines are sequentially driven. It is driven in a jag shape to form a triangle shape.

Similarly, a G dot is formed in the second data line D32 and a B dot is formed in the third data line D33, so that it is possible to display diagonal graphics.

The liquid crystal display of the present invention is capable of redundancy for open defects in data lines. In the case of the liquid crystal display of FIG. 1 or 2, redundancy is impossible when an open defect occurs in the data line. For example, in the liquid crystal display of FIGS. 1 and 2, when an open defect occurs in the second data lines G12 and G22, driving of the switching device connected to the second data line in which the open occurs. This was impossible and the G dot was not driven and a fail occurred.

However, in the liquid crystal display device of the present invention, assuming that an open defect occurs in D32a of the pair of data lines D32a and D32b constituting the second data line D32, for example, the first of G dots The sub-dot G1 is not driven, but the second sub-dot G2 is driven, so redundancy is possible.

According to the present invention as described above, the data line is divided into a pair of data lines, the R, G, and B dots constituting one pixel are divided into two subdots, and the dots are subdotted along the data line. By connecting each of the pair of data lines so as to be shifted by, a triangle pixel arrangement structure can be obtained.

As a result, by dividing the dot into two subdots to form a triangle structure, the dots connected to the same data line are driven in a triangle shape during sequential driving of the gate line, thereby making it possible to display diagonal graphics as well as A /. It is possible to improve the color implementation characteristics required in the V liquid crystal display device.

In addition, in the liquid crystal display of the present invention, since the pixels are arranged in a triangle structure, the data lines are elongated in a straight line, and thus, the length of the data lines is shorter than in the conventional triangle structure, thereby reducing the RC delay.

In addition, in the liquid crystal display of the present invention, even if an open defect occurs in one data line by driving the data line in a double data line structure, the pixel can be driven by another data line, so that a redundancy function is added to improve the yield. There is an advantage that can be improved.

In addition, this invention can be implemented in various changes within the range which does not deviate from the summary.

Claims (15)

A plurality of gate lines and data lines arranged at regular intervals crossing each other; R, G, and B dots arranged in the pixel region formed by the data line and the gate line; A liquid crystal display device comprising: switching elements for R, G, and B dot driving arranged in a pixel area and connected to the data line and the gate line; And the data line is divided into a pair of data lines, and each of the R, G, and B dots is divided into a plurality of subdots along the pair of data lines. The R, G and B dots of claim 1, wherein the R, G, and B dots are divided into two sub dots so that the first subdot is connected to a first data line of a pair of data lines, and the second subdot is a pair of data lines. The liquid crystal display device, characterized in that connected to the second data line. 3. The liquid crystal display device according to claim 2, wherein the R, G, and B dots are shifted by subdots along the gate line and arranged in a triangle shape. 4. The R, G and B dots of claim 3, wherein the R, G, and B dots are arranged in a zigzag pattern along a data line such that the first R, G, and B sub dots in the odd gate line are the second R, in the even gate line, And G and B subdots, respectively. 2. The liquid crystal display device according to claim 1, wherein the separated pair of data lines are arranged in parallel to each other and driven at the same time by applying the same data line driving signal. The liquid crystal display device of claim 1, wherein each of the R, G, and B dots is divided into two subdots along a pair of data lines. 7. The R, G and B dots of claim 6, wherein each of the R, G, and B dots is divided into two subdots along the pair of data lines. And the R, G, and B dots are divided by the first data line of the pair of data lines in the even-numbered gate line. 7. The liquid crystal display device according to claim 2 or 6, wherein two switching elements are arranged for each of the R, G, and B dots, and one switching element drives one servo dot. 9. The liquid crystal display device according to claim 8, wherein the switching elements arranged two per dot are arranged in opposite directions with respect to the data line between the even-numbered gate line and the odd-numbered data line. A plurality of gate lines arranged at regular intervals from each other; A plurality of data lines arranged at regular intervals to intersect the gate line and separated into a pair of data lines arranged in parallel with each other; R, G, and B dots arranged in the pixel region formed by the data line and the gate line and divided into subdots along the pair of data lines; And an R, G, B dot driving switching element arranged in the pixel area, one for each sub dot of each of the R, G, and B dots, and connected to the data line and the gate line. 11. The liquid crystal display device according to claim 10, wherein the R, G, and B dots are shifted by subdots along the gate line and arranged in a triangle shape. 12. The R, G and B dots of claim 11, wherein the R, G, and B dots are arranged in a zigzag pattern along a data line such that the first R, G, and B sub dots in the odd gate line are the second R, in the even gate line, And G and B subdots, respectively. The liquid crystal display of claim 10, wherein the separated pair of data lines are driven at the same time by applying the same data line driving signal. The R, G and B dots of claim 10, wherein each R, G, B dot is divided into two subdots along a pair of data lines. And the R, G, and B dots are divided by the first data line of the pair of data lines in the even-numbered gate line. 11. The method of claim 10, wherein the switching elements arranged in two per R, G, B dot is arranged between the even-numbered gate line and the odd-numbered data line to be located in the opposite direction with respect to the data line. Liquid crystal display device.

Images