KR20080000917A - A display panel and a apparatus for three dimensional image display having the same - Google Patents

Abstract

A display panel and a three-dimensional image display device having the same are provided to restrict a pseudoscopic phenomenon generated in forming a three-dimensional image, by making the widths of black matrixes different in the display panel. A display panel(100) is composed of gate lines(110) aligned in one direction; data lines(120) arranged to cross the gate lines in a vertical direction, wherein two data lines are disposed adjacently to each other, respectively; switching elements(130) arranged at each point where the gate lines and the data lines cross each other, and electrically connected to each gate line and each data line; pixel electrodes(140) electrically connected with each switching element; first black matrixes(150) formed on each data line to shield each data line; and second black matrixes(160) formed between the pixel electrodes disposed between two data lines adjacent to each other. The first black matrix is wider than the second black matrix.

Description

A display panel and a apparatus for three dimensional image display having the same}

1 is a view for explaining a three-dimensional image display device having a display panel according to the prior art.

FIG. 2 is a diagram illustrating a viewing area and an inverted stereoscopic area formed by the stereoscopic image display device of FIG. 1.

3 is a diagram for describing a display panel according to an exemplary embodiment of the present invention.

4 is a diagram for describing a stereoscopic image display device having a display panel according to an exemplary embodiment of the present invention.

FIG. 5 is a diagram illustrating a viewing area and an inverted stereoscopic area formed by the stereoscopic image display device of FIG. 4.

<Explanation of symbols for the main parts of the drawings>

100: display panel 110: gate line

120: data line 130: switching element

140: pixel electrode 150: first black matrix

160: second black matrix 200: parallax barrier

220: transmission area 240: blocking area

The present invention relates to a display panel and a stereoscopic image display device having the same, and more particularly, to a display panel and a stereoscopic image display device having the same to improve a pseudoscopic phenomenon occurring when the stereoscopic image is implemented. will be.

In general, there are physiological and empirical factors in which a person feels a three-dimensional armor. In the three-dimensional image display technology, a three-dimensional effect of an object is determined using a binocular parallax, which is generally the largest factor that recognizes a three-dimensional effect at a short distance. Will feel.

As a method of viewing a stereoscopic image, there are largely a method of wearing glasses and a glasses-free method of not wearing glasses.

The way of wearing glasses is the anaglyph method using blue and red sunglasses on both eyes, the polarization method using polarized glasses with different polarization directions, and the time-divided screen is periodically repeated and synchronized with this cycle. There is a time-division method of wearing glasses with an electronic shutter. However, the method of wearing glasses has problems such as the inconvenience of wearing glasses and being disturbed in observing an object different from an image while wearing glasses. Therefore, in recent years, researches on how not to wear glasses have been actively conducted.

Representatives are known as a glasses-free method that does not wear glasses, such as a lenticular method in which a lenticular lens plate in which a cylindrical lens array is arranged vertically is installed in front of the display panel, and a parallax barrier in front of the display panel. ), And the parallax barrier is used to separate the left and right eye images using the parallax barrier to create a stereoscopic effect. Recently, a 2D / 3D display device capable of displaying both planar images (2D) and 3D images (3D) has been developed.

1 is a view schematically illustrating a stereoscopic image display device having a display panel according to the related art, and FIG. 2 is a view illustrating a viewing area and a reverse stereoscopic area formed by the stereoscopic image display device of FIG. 1.

Referring to FIG. 1, a stereoscopic image display device having a display panel according to the related art includes a display panel 10 and a parallax barrier 20.

The display panel 10 is disposed where the gate lines 12, the data lines 14 intersecting the gate lines 12, and the gate lines 12 and the data lines 14 cross each other. Thin film transistors 16 electrically connected to the gate lines 12 and the data lines 14, pixel electrodes 18 electrically connected to the thin film transistors 16, and each data line 14. Includes a black matrix 19 formed so that each data line 14 is covered.

The parallax barrier 20 includes transmission regions 22 and blocking regions 24 alternately formed at positions opposite to the black matrix 19 formed on each data line 14.

The pitch of the parallax barrier 20 may include a structure of the display panel 10, a pixel pitch formed on the display panel 10, and a pitch of the parallax barrier 20. It is designed in consideration of the width of the black matrix 19 and the distance between the human eyes (typically 65 mm).

If the stereoscopic image display device is constructed using the derived design values, it can be seen that the viewing zone is repeatedly formed in the space as shown in FIG. 2, and the observer is left and right by a predetermined distance as well as in front of the stereoscopic image display device. As you move, you can watch the same stereoscopic image as you did from the front.

If the observer moves out of the viewing area by moving sideways (left or right) while viewing the stereoscopic image, the left eye 4 and right eye 2 image information is mixed to pass through the space where the stereoscopic image cannot be viewed. Moving further, the left eye 4 image information enters the right eye 2 and the right eye 2 image information enters the left eye 4. This is called a pseudoscopic phenomenon and the visible space is called a pseudoscopic zone.

Inverted stereoscopic phenomenon is a phenomenon that occurs when moving from the first viewing area to the next viewing area, it is difficult to avoid the phenomenon in the existing design method applying FIG. The reason is that the width of the viewing area (the distance between the two eyes in the viewing area) a and the width of the area in the anti-stereoscopic area (the distance between the two eyes in reverse stereo) b = a = b = Because it is the same as 65mm.

An object of the present invention is to provide a display panel having a structure in which the widths of the black matrices can be designed differently.

Another object of the present invention is to provide a stereoscopic image display apparatus having a display panel having a structure capable of differently designing the widths of black matrices so as to improve an inverse stereoscopic phenomenon occurring during stereoscopic image implementation. There is.

Technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, a display panel includes: gate lines arranged in one direction; Data lines disposed to vertically intersect the gate lines and disposed adjacent to each other by two lines; Switching elements disposed at intersections of the gate lines and the data lines and electrically connected to the gate lines and the data lines; Pixel electrodes electrically connected to each switching element; First black matrices formed such that each data line is covered over each data line; And second black matrices formed between pixel electrodes disposed between two adjacent data lines, wherein the widths of the first black matrices are wider than the widths of the second black matrices.

In accordance with another aspect of the present invention, a three-dimensional image display device including a display panel is disposed to intersect gate lines and gate lines arranged in one direction and adjacent to each other. Arranged data lines, switching elements disposed at intersections of each gate line and data line, switching elements electrically connected to each gate line and data line, pixel electrodes electrically connected to each switching element, and respective data on each data line. First black matrices formed such that the line is obscured, and second black matrices formed between pixel electrodes disposed between two adjacent data lines, wherein the widths of the first black matrices are greater than the width of the second black matrices. A wide display panel; And a parallax barrier disposed on the front surface of the display panel, the blocking region disposed to face the first black matrices, and the transmission region disposed to face the second black matrices.

Specific details of other embodiments are included in the detailed description and the accompanying drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

In addition, in the drawings, the size and thickness of layers and films or regions are exaggerated for clarity of description, and when any film or layer is described as being formed "on" of another film or layer, It may be directly on top of the other film or layer, and a third other film or layer may be interposed therebetween.

3 is a diagram for describing a display panel according to an exemplary embodiment of the present invention.

Referring to FIG. 3, a display panel according to an exemplary embodiment of the present invention may include gate lines 110, data lines 120, switching elements 130, pixel electrodes 140, and first black matrices ( 150 and second black matrices 160.

The gate lines 110 are disposed on the transparent insulating substrate (not shown), such as a glass substrate, spaced apart from each other in one direction. The gate lines 110 serve to switch on or off the switching elements 130 by receiving a gate voltage signal.

The data lines 120 are disposed to cross the gate lines 110 in an insulated state on a transparent insulating substrate such as a glass substrate, and are disposed adjacent to each other by two lines. The data lines 120 receive the data voltage signal and apply the data voltage signal to the pixel electrodes 140 through the switching elements 130.

The switching elements 130 are disposed one at a point where the gate lines 110 and the data lines 120 cross each other, and are electrically connected to each gate line 110 and the data line 120. The switching element 130 may be implemented with thin film transistors including a gate electrode, an active layer, a source electrode, and a drain electrode, the gate electrode being electrically connected to each gate line 110, and the source electrode being each data. Are connected to the lines 120.

At this time, when a gate voltage signal applied to each gate line 110 is applied to the gate electrode, the thin film transistor is switched on, and thus a channel is formed in the active layer. As described above, when the thin film transistor is switched on to form a channel in the active layer, the data voltage signal applied to each data line 120 is applied to the source electrode, and the data voltage signal applied to the source electrode is applied to the channel formed in the active layer. It is applied to the drain electrode through.

The pixel electrodes 140 are formed in the pixel area formed by the vertical intersection of the gate lines 110 and the data lines 120, and are electrically connected to the switching elements 130. Here, the pixel region is not formed between two adjacent data lines 120, but only between two non-adjacent data lines 120. Therefore, two pixel electrodes 140 are positioned between two non-adjacent data lines 120.

Each pixel electrode 140 positioned in the pixel area is electrically connected to the drain electrode of the thin film transistor, which is the switching element 130. Therefore, the data voltage signal applied to the drain electrode is applied to display the pixel corresponding to each pixel electrode 140.

For reference, the pixel electrodes 140 may be formed of a transparent electrode layer made of indium tin oxide (ITO), indium zinc oxide (IZO), or the like.

The first black matrices 150 are formed so that each data line is covered over each data line. The first black matrices 150 are used to prevent light from being transmitted between the pixel electrodes 140 formed on both adjacent two data lines 120. Color filters representing colors such as R (red), G (green), and B (blue) are placed on the pixel electrode.

Therefore, the first black matrices 150 prevent light from being transmitted between the pixel electrodes 140 so that color bleeding does not occur between R (red), G (green), and B (blue) cells. . It also serves as a barrier between R (red), G (green), and B (blue) cells. The first black matrices 150 are made of a metal material such as chromium or chromium oxide.

The second black matrices 160 are formed between the pixel electrodes 140 disposed between two adjacent data lines 120. That is, as mentioned above, the pixel electrodes 140 are not positioned between two adjacent data lines 120, but are positioned between two non-adjacent data lines, so that two pixel electrodes 140 are positioned. ) Second black matrices 160 are formed between the layers.

As such, the second black matrices 160 are formed to prevent light from being transmitted between the two pixel electrodes 140. A color filter representing a color such as R (red), G (green), and B (blue) is also disposed on the pixel electrode divided by the second black matrices 160.

Accordingly, the second black matrices 150 prevent light from being transmitted between the pixel electrodes 140 so that color bleeding does not occur between R (red), G (green), and B (blue) cells. . It also serves as a barrier between R (red), G (green), and B (blue) cells. The first black matrices 150 are made of a metal material such as chromium or chromium oxide.

Here, the widths of the first black matrices 150 are wider than the widths of the second black matrices 160. This is because two data lines 120 are disposed below each first black matrix 150, whereas no data lines are disposed below each second black matrix 160.

Hereinafter, a stereoscopic image display device having a display panel according to an embodiment of the present invention will be described.

Prior to describing the present embodiment, the width b of the inverted stereoscopic region formed by the stereoscopic image display apparatus may be obtained by Equation 1 below.

b = (P0 + BM1) / (P0 + BM2) * a

Here, P0 indicates the width of the opening of the pixel, BM1 and BM2 indicate the width of the first black matrix 150 and the second black matrix 160, respectively, and a indicates the width of the viewing area.

According to the above equation, when the width P0 of the opening of the pixel is the same, when the width of the first black matrix 150 and the width of the second black matrix 160 are different from each other, the width b of the inverted vision area b ) Becomes narrower or wider.

Therefore, in the embodiment of the present invention, the width of the first black matrix 150 is formed to be wider than the width of the second black matrix 160 in order to improve the phenomenon at the time of anti-stereoscopic.

4 is a view illustrating a stereoscopic image display device having a display panel according to an exemplary embodiment of the present invention, and FIG. 5 illustrates a viewing area and an inverted stereoscopic area formed by the stereoscopic image display device of FIG. 4. Drawing.

Referring to FIG. 4, a stereoscopic image display device including a display panel according to an exemplary embodiment of the present invention includes a display panel 100 and a parallax barrier 200.

The display panel 100 includes gate lines 110, data lines 120, switching elements 130, pixel electrodes 140, first black matrices 150, and second black matrices 160. ).

3 is a diagram for describing a display panel according to an exemplary embodiment of the present invention.

Referring to FIG. 3, a display panel according to an exemplary embodiment of the present invention may include gate lines 110, data lines 120, switching elements 130, pixel electrodes 140, and first black matrices ( 150 and second black matrices 160.

The gate lines 110 are disposed on the transparent insulating substrate (not shown), such as a glass substrate, spaced apart from each other in one direction. The gate lines 110 serve to switch on or off the switching elements 130 by receiving a gate voltage signal.

The data lines 120 are arranged to cross the gate lines 110 in an insulated state on a transparent insulating substrate such as a glass substrate, and are disposed adjacent to each other by two lines. The data lines 120 receive the data voltage signal and apply the data voltage signal to the pixel electrodes 140 through the switching elements 130.

The switching elements 130 are disposed one at a point where the gate lines 110 and the data lines 120 cross each other, and are electrically connected to each gate line 110 and the data line 120. The switching element 130 may be implemented with thin film transistors including a gate electrode, an active layer, a source electrode, and a drain electrode, the gate electrode being electrically connected to each gate line 110, and the source electrode being each data. Are connected to the lines 120.

At this time, when a gate voltage signal applied to each gate line 110 is applied to the gate electrode, the thin film transistor is switched on, and thus a channel is formed in the active layer. As described above, when the thin film transistor is switched on to form a channel in the active layer, the data voltage signal applied to each data line 120 is applied to the source electrode, and the data voltage signal applied to the source electrode is applied to the channel formed in the active layer. It is applied to the drain electrode through.

The pixel electrodes 140 are formed in the pixel area formed by the vertical intersection of the gate lines 110 and the data lines 120, and are electrically connected to the switching elements 130. Here, the pixel region is not formed between two adjacent data lines 120, but only between two non-adjacent data lines 120. Therefore, two pixel electrodes 140 are positioned between two non-adjacent data lines 120.

For reference, pixels are formed on the pixel electrodes 140, and the pixels include a left eye pixel L and a right eye pixel R. The left eye pixel L and the right eye pixel R may be configured of various unit pixels such as a pixel unit, a subpixel unit, or two subpixel units.

Each pixel electrode 140 positioned in the pixel area is electrically connected to the drain electrode of the thin film transistor, which is the switching element 130. Accordingly, the data voltage signal applied to the drain electrode is applied to display the pixel (left eye pixel L or right eye pixel) corresponding to each pixel electrode 140.

The first black matrices 150 are formed so that each data line is covered over each data line. The first black matrices 150 are used to prevent light from being transmitted between the pixel electrodes 140 formed on both adjacent two data lines 120. Color filters representing colors such as R (red), G (green), and B (blue) are disposed on the pixel electrode 140.

Therefore, the first black matrices 150 prevent light from being transmitted between the pixel electrodes 140 so that color bleeding does not occur between R (red), G (green), and B (blue) cells. . It also serves as a barrier between R (red), G (green), and B (blue) cells. The first black matrices 150 are made of a metal material such as chromium or chromium oxide.

The second black matrices 160 are formed between the pixel electrodes 140 disposed between two adjacent data lines 120. That is, as mentioned above, the pixel electrodes 140 are not positioned between two adjacent data lines 120, but are positioned two by two between two non-adjacent data lines. The second black matrices 160 are formed between the 140.

As such, the second black matrices 160 are formed to prevent light from being transmitted between the two pixel electrodes 140. A color filter representing a color such as R (red), G (green), and B (blue) is also disposed on the pixel electrode divided by the second black matrices 160.

Accordingly, the second black matrices 150 prevent light from being transmitted between the pixel electrodes 140 so that color bleeding does not occur between R (red), G (green), and B (blue) cells. . It also serves as a barrier between R (red), G (green), and B (blue) cells. The first black matrices 150 are made of a metal material such as chromium or chromium oxide.

Here, the widths of the first black matrices 150 are wider than the widths of the second black matrices 160. This is because two data lines 120 are disposed below each first black matrix 150, whereas no data lines are disposed below each second black matrix 160.

The parallax barrier 200 is composed of a transmission region 220 and a blocking region 240.

The transmissive region 220 is disposed to face the second black matrices 160 of the display panel 100, and includes a left eye pixel L or a right eye corresponding to each pixel electrode 140 of the display panel 100. It serves to transmit left eye image information or right eye image information displayed on the pixel R.

The blocking region 240 is disposed to face the first black matrices 150 of the display panel 100, and includes a left eye pixel L or a right eye corresponding to each pixel electrode 140 of the display panel 100. The left eye image information or the right eye image information displayed on the pixel R is blocked.

The transmission region 220 and the blocking region 240 have a structure arranged alternately.

The stereoscopic image display device configured as described above includes a display panel 100 having a width of the first black matrices 150 wider than the width of the second black matrices 160. With the width a of the region being intact, only the width b of the region at the time of inverting is widened.

As a result, since the width b of the viewing area becomes the same, only the width b of the inverse stereoscopic area becomes wide, so that the image information for the left eye 4 enters the right eye 2 and the image information for the right eye 2. It is possible to improve the phenomenon at the time of inverted entering the left eye (4).

Meanwhile, in the embodiments of the present invention, only the stereoscopic image display device using the parallax barrier method is described, but the present invention may also be applied to the stereoscopic image display device using the lenticular method.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings and tables, the present invention is not limited to the above embodiments, but may be manufactured in various forms, and common knowledge in the art to which the present invention pertains. Those skilled in the art can understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

According to an embodiment of the present invention, a display panel and a stereoscopic image display device having the same have a display panel having a structure in which the widths of the black matrices can be designed differently, and a parallax barrier designed by the structure of the display panel. As a result, the phenomenon of inverted stereotype occurring when the stereoscopic image is implemented can be improved.

Claims (4)

Gate lines arranged in one direction; Data lines arranged to vertically intersect the gate lines and disposed adjacent to each other by two lines; Switching elements disposed at intersections of the gate lines and the data lines and electrically connected to the gate lines and the data lines; Pixel electrodes electrically connected to the respective switching elements; First black matrices formed on the data lines such that each data line is covered; And Second black matrices formed between the pixel electrodes disposed between the two adjacent data lines; A display panel in which the width of the first black matrices is wider than the width of the second black matrices. The method of claim 1, The switching element is a thin film transistor. Gate lines arranged in one direction, intersecting the gate lines, data lines disposed adjacent to each other by two lines, and intersecting the gate lines and the data lines, respectively; And switching elements electrically connected to the first and second data lines, pixel electrodes electrically connected to the respective switching elements, first black matrices formed to cover the respective data lines on the respective data lines, and the two adjacent data lines. A display panel including second black matrices formed between the pixel electrodes disposed between the first and second black matrices, the width of the first black matrices being wider than the width of the second black matrices; And A stereoscopic display device disposed on a front surface of the display panel, the parallax barrier including a blocking area disposed to face the first black matrices and a transmission area disposed to face the second black matrices; . The method of claim 3, And the switching element is a thin film transistor.

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