KR20090047149A - Image display device - Google Patents

Abstract

The present invention relates to an image display apparatus. The present invention disclosed is a liquid crystal display panel; And a parallax barrier panel having barrier patterns, wherein the barrier pattern is disposed every seven subpixels or eight subpixels of the liquid crystal display panel.

Therefore, due to the design of barrier patterns, various types of images may be realized by securing a distance margin between the parallax barrier panel and the display panel.

LCD, parallax, barrier, design, subpixel

Description

Video display device {IMAGE DISPLAY DEVICE}

The present invention relates to an image display apparatus.

Dual view of the needs, diagnostics, and measurement results for the integration of the Internet, sensory communications, virtual reality and endoscopy, and the need for integrating computers, broadcasts and communications into a single medium focused on the visualization of multimedia technologies. There is an increasing demand for displaying in the form of 3D images or 3D images.

The dual viewer display device may, for example, enable a display device installed inside a vehicle to display a navigation screen in a driver's seat and to watch a movie or news in an auxiliary seat.

Such a dual viewer display device is a method of dividing image data into left and right regions, respectively, such as a parallax barrier method and a lenticular method.

In particular, a dual viewer display device using a parallax barrier panel uses a parallax barrier panel to separate images into a left region and a right region, but increases the separation angles of different images to enlarge the left and right regions of the display device. Allow different images to be displayed on the screen.

Accordingly, the parallax barrier panel is divided into a plurality of barrier areas and aperture areas in order to propagate light toward a left side of a person or to propagate light toward a right side thereof.

In order for the barrier area of the parallax barrier panel to properly separate the R, G, and B image signals of the display panel in the left or right direction, the barrier pattern (barrier area) of the display panel and the parallax barrier panel is placed very close to each other. The R, G, and B video signals must be separated in the right direction.

To this end, a method of etching the outer glass substrate of the display panel to form a thin layer or grinding the surface of the glass substrate by a grinding process has been proposed.

However, when the glass substrate of the completed display panel is etched or ground, the display panel may be damaged or the pad area serving as the signal supply unit may be damaged.

An object of the present invention is to provide an image display apparatus capable of producing a product without adding a process by designing an area in which barrier patterns of a parallax barrier panel block subpixels of a display panel.

Another object of the present invention is to provide an image display apparatus capable of realizing various types of images by securing a distance margin between a parallax barrier panel and a display panel due to the design of barrier patterns.

In order to achieve the above object, the image display apparatus according to the present invention,

A liquid crystal display panel; And a parallax barrier panel having barrier patterns, wherein the barrier pattern is disposed every seven subpixels or eight subpixels of the liquid crystal display panel.

Here, when the barrier pattern is arranged in units of seven subpixels of the liquid crystal display panel, 3.5 subpixels are disposed in left and right regions based on a center overlapping with the barrier pattern.

As described in detail above, the present invention has an effect that a barrier pattern of the parallax barrier panel may limit a region in which sub pixels of the display panel block, thereby producing a product without additional process.

In addition, the present invention has an effect of realizing the distance margin between the parallax barrier panel and the display panel due to the design of the barrier patterns to realize various types of images.

The present invention is not limited to the above-described embodiments, and various changes can be made by those skilled in the art without departing from the gist of the present invention as claimed in the following claims.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. First, it should be noted that the same components or parts in the drawings represent the same reference numerals as much as possible. In describing the embodiments, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the gist of the embodiments.

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

1 is a cross-sectional view of an image display apparatus according to the present invention.

Referring to FIG. 1, an image display apparatus includes a lower substrate 101 and a color array layer including a thin film transistor (TFT) and an array layer 110 of pixel electrodes with a liquid crystal layer 50 interposed therebetween. A liquid crystal display panel having the upper substrate 201 having the 210 attached thereto, and a parallax barrier panel 301 attached to the liquid crystal display panel to implement a two-dimensional or three-dimensional image.

In the lower substrate 101, an array layer 110 having TFTs, pixel electrodes, gate lines, and data lines formed on the first substrate 100 is formed by several mask processes. The upper substrate 201 is a color array layer 210 on which R (red), G (green), and B (blue) color filters are formed on the second substrate 200, and a passivation layer on the color array layer 210. 220 is formed. The color array layer 210 is also formed by performing several mask processes.

Although the drawings focus on the liquid crystal display panel, the present invention can be applied to display panels such as organic light emitting display devices, plasma display panels, and E-ink display panels.

In the parallax barrier panel 301, a barrier pattern 310 is formed on a third substrate 300, and a constant gap with a liquid crystal display panel is formed on a third substrate 300 on which the barrier pattern 310 is formed. The gap forming layer 320 is formed.

In the present invention, the barrier pattern 310 of the parallax barrier panel 301 is formed to be extended in seven or eight subpixel units (individual R, G, and B subpixels) among the color filter layers of the liquid crystal display panel. The parallax barrier panel 301 and the liquid crystal display panel may be attached without etching or grinding.

2 is a flowchart illustrating a manufacturing process of an image display apparatus according to the present invention.

Referring to FIG. 2, when the lower substrate on which the TFT and the pixel electrode are formed and the upper substrate on which the R, G, and B color filters are formed are manufactured, the bonding process is performed with the liquid crystal layer interposed therebetween, followed by the cell process. Complete the display panel.

When the liquid crystal display panel is completed as described above, a gap forming layer for forming a predetermined gap with the parallax barrier panel is coated on the outer side of the upper substrate on which the color filter layer is formed.

In addition, the parallax barrier panel forms a blocking film that can block light on the substrate. In this case, the blocking film may be a metal film such as resin BM (Black Matrix) or chromium.

When the blocking film is formed on the substrate as described above, a process of applying a photoresist (PR) and a process of exposing and developing using a mask are performed. If the blocking film is a metal film, the etching process may be performed.

After the exposure and development processes are completed as described above, a strip process for removing the photoresist is performed to produce a differential barrier panel.

As such, when the liquid crystal display panel and the parallax barrier panel are completed, a process of joining the two panels is performed to complete the image display apparatus.

In the present invention, since the barrier pattern of the parallax barrier panel is designed to block at least seven or more subpixels of the subpixels, an additional process for attaching the parallax barrier panel to the liquid crystal display panel is not performed.

That is, the barrier pattern can be expanded to secure a separation margin between the barrier pattern and the subpixels of the liquid crystal display panel.

FIG. 3 is a diagram illustrating a parallax barrier panel designed according to a first embodiment of the present invention, and FIGS. 4A and 4B illustrate images of a right region and a left region of FIG. 3.

1, 3, 4A, and 4B, a region in which the barrier pattern 310 of the parallax barrier panel 301 of FIG. 1 overlaps with the subpixels of the liquid crystal display panel is illustrated.

In the present invention, the barrier pattern 310 is designed such that one barrier pattern 310 is positioned in units of seven sub-pixels among the color filters of the liquid crystal display panel. That is, one subpixel is exposed at left and right sides of one barrier pattern 310 such that two subpixels are completely exposed between adjacent barrier patterns 310.

However, this is not limited to the above embodiment, and can be variously changed according to the size of each display device, the viewing environment, and the requirements of the user. Accordingly, at least two subpixels may be exposed on the left and right sides of the barrier pattern 310 and at least three subpixels may be exposed between adjacent barrier patterns 310.

Accordingly, 3.5 subpixels exist in the left and right regions based on the subpixels (hatched subpixels) of the central region overlapping with the barrier pattern 310. In addition, the hatched sub-pixels may be formed as a black matrix when the color filter is formed, or may be in the light blocking state by being black driven when driving. As such, when the subpixel of the center area becomes black, the left and right images are separated more clearly.

In the right region of the image display apparatus to which the parallax barrier panel of the present invention is attached, as shown in FIG. 4A, subpixels of RGB, GBR, and BRG are visible. This is because the RGB, GBR, and BRGs in the left region are all covered by the barrier patterns based on the center (hatched area) of the barrier pattern in FIG. 3, but the RGB, GBR, and BRGs located in the right region are not blocked. to be.

In the same manner, in FIG. 4B, RGB, GBR, and BRG positioned in the right region of the barrier pattern 310 are all covered by barrier patterns, but RGB, GBR, and BRG positioned in the left region are not blocked.

In addition, if one barrier pattern 310 is formed in units of seven sub-pixels as described above, the gap between the barrier pattern 310 of the parallax barrier panel 301 and the upper substrate 210 of the liquid crystal display panel may be further widened. Can be.

Accordingly, in order to attach the parallax barrier panel 30 to the liquid crystal display panel, an etching and grinding process of reducing the thickness of the upper substrate of the liquid crystal display panel is generally performed. However, in the present invention, such an additional process is unnecessary. That is, even though the barrier patterns 310 of the manufactured parallax barrier panel 301 are attached to only the subpixels of the liquid crystal display panel by alignment, the desired barrier patterns 310 may be formed in the left and right regions as shown in FIGS. 4A and 4B. You can get a video.

FIG. 5 is a view illustrating a parallax barrier panel designed according to a second embodiment of the present invention, and FIGS. 6A and 6B illustrate images of a right region and a left region of FIG. 5.

1, 5, 6A, and 6B, the barrier pattern 310 of the parallax barrier panel 301 of FIG. 1 is expanded to block eight subpixels in the second embodiment of the present invention. . Therefore, the barrier pattern will be described with reference numeral 410, unlike in FIG.

The barrier pattern 410 according to the second embodiment of the present invention is designed such that one barrier pattern 410 is positioned in units of eight sub pixels among the color filters of the liquid crystal display panel. That is, one subpixel is exposed on the left and right sides of one barrier pattern 410 so that two subpixels are completely exposed between adjacent barrier patterns 410.

However, this is not limited to the above embodiment, and can be variously changed according to the size of each display device, the viewing environment, and the requirements of the user. Accordingly, at least two subpixels may be exposed at left and right sides of the barrier pattern 410, and at least three subpixels may be exposed between adjacent barrier patterns 410.

However, the subpixels blocked by the barrier pattern 410 are two pixels RGB. In addition, the color filters of the upper substrate 201 are changed to the RGBW structure in order to compensate for the luminance.

Accordingly, four subpixels RGBW exist in the left and right regions based on the subpixels of the central region overlapping with the barrier pattern 410.

The image shown in the right region of the image display apparatus with the parallax barrier panel of the present invention is shown in the sub-pixels of RGBW, BRGW, GBRW as shown in Figure 6a. This is because WBRG and WGBRs in the left region are all covered by the barrier patterns 410 based on the center of the barrier pattern in FIG. 5, but RGBW, BRGW, and GBRWs located in the right region do not block light.

Similarly, in FIG. 6B, the RGBW, BRGW, and GBRWs located in the right area of the barrier pattern 410 are all covered by the barrier patterns, but the WBRG and WGBRs located in the left area do not block light.

In addition, if one barrier pattern 410 is formed in units of eight sub-pixels as described above, a gap between the barrier pattern 410 of the parallax barrier panel 301 and the upper substrate 210 of the liquid crystal display panel may be further widened. Can be.

Accordingly, in order to attach the parallax barrier panel 30 to the liquid crystal display panel, an etching and grinding process of reducing the thickness of the upper substrate of the liquid crystal display panel is generally performed. However, in the present invention, such an additional process is unnecessary. That is, even though the barrier patterns 410 of the manufactured parallax barrier panel 301 are attached to the liquid crystal display panel with only sub-pixels aligned, the desired barrier patterns 410 may be formed in the left and right regions as shown in FIGS. 6A and 6B. You can get a video.

1 is a cross-sectional view of an image display apparatus according to the present invention.

2 is a flowchart illustrating a manufacturing process of an image display apparatus according to the present invention.

3 is a view showing a state in which a parallax barrier panel is designed according to a first embodiment of the present invention.

4A and 4B illustrate images of a right region and a left region of FIG. 3.

FIG. 5 is a view illustrating a parallax barrier panel designed according to a second embodiment of the present invention.

6A and 6B illustrate images of a right region and a left region of FIG. 5.

* Description of the symbols for the main parts of the drawings *

101: lower substrate 201: upper substrate

301: parallax barrier panel 310,410: barrier pattern

50: liquid crystal layer

Claims (7)

A liquid crystal display panel; And A parallax barrier panel with barrier patterns, And the barrier pattern is arranged every seven subpixels or eight subpixels of the liquid crystal display panel. The image of claim 1, wherein when the barrier pattern is arranged in units of seven subpixels of the liquid crystal display panel, 3.5 subpixels are disposed in left and right regions based on a center overlapping with the barrier pattern. Display device. The image display apparatus of claim 2, wherein the subpixel of the central region overlapping with the barrier pattern has a black driving or a black matrix. The image of claim 1, wherein when the barrier pattern is arranged in units of eight subpixels of the liquid crystal display panel, four subpixels are arranged in left and right regions based on a center overlapping with the barrier pattern. Display device. The image display apparatus of claim 4, wherein at least one white subpixel is formed in subpixels overlapping the barrier pattern. The image display of claim 1, wherein the liquid crystal display panel includes an upper substrate including a color filter formed on a first substrate, and a lower substrate including a thin film transistor and a pixel electrode formed on a second substrate. Device. The image display apparatus of claim 6, wherein thicknesses of the first substrate and the second substrate are the same.

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