KR20130073667A - Liquid crystal display and stereoscopic image display using the same - Google Patents

Abstract

PURPOSE: A liquid crystal display device and a three-dimensional video display device using the same are provided to minimize aperture ratio reduction by organizing a unit pixel with two sub pixels. CONSTITUTION: A liquid crystal display panel (10) has a group of a first color sub pixel, a second sub pixel, and a third sub pixel, a pixel group which repetitively comes broadwise. Each unit pixel comprises two different sub pixels which neighbor each other horizontally. The first pixel and the third pixel are formed two thirds of a display resolution in number. A data rendering circuit (11) renders an input video data which is larger in number than the sub pixels formed on the liquid crystal display panel using a previously stored algorithm.

Description

Liquid crystal display and three-dimensional image display using the same {LIQUID CRYSTAL DISPLAY AND STEREOSCOPIC IMAGE DISPLAY USING THE SAME}

The present invention relates to a liquid crystal display and a stereoscopic image display using the same.

The liquid crystal display displays an image by controlling the light transmittance of the liquid crystal layer through an electric field applied to the liquid crystal layer in accordance with a video signal. Such a liquid crystal display device is a flat panel display device having advantages of small size, thinness and low power consumption, and is used as a portable computer such as a notebook PC, office automation equipment, audio / video equipment and the like. Particularly, an active matrix type liquid crystal display device in which a switching element is formed for each liquid crystal cell is capable of actively controlling a switching element, which is advantageous for a moving image.

As a switching element used in an active matrix type liquid crystal display device, a thin film transistor (hereinafter referred to as TFT) is used. An active matrix type liquid crystal display device converts digital video data into an analog data voltage based on a gamma reference voltage and supplies it to a data line, and simultaneously supplies a scan pulse to a gate line, thereby charging the data voltage in the liquid crystal cell. For this purpose, the gate electrode of the TFT is connected to the gate line, the source electrode is connected to the data line, and the drain electrode of the TFT is connected to the pixel electrode of the liquid crystal cell and one electrode of the storage capacitor. The common voltage is supplied to the common electrode of the liquid crystal cell. The storage capacitor charges a data voltage applied from the data line when the TFT is turned on to maintain a constant voltage of the liquid crystal cell. When the scan pulse is applied to the gate line, the TFT is turned on to form a channel between the source electrode and the drain electrode to supply a voltage on the data line to the pixel electrode of the liquid crystal cell. At this time, the liquid crystal molecules of the liquid crystal cell change the incident light by changing the arrangement by the electric field between the pixel electrode and the common electrode.

The liquid crystal display includes an R color filter, a G color filter, and a B color filter to implement R (red), G (green), and blue (B). The liquid crystal cell including the R color filter is implemented as an R subpixel, the liquid crystal cell including the G color filter is implemented as a G subpixel, and the liquid crystal cell including the B color filter is implemented as a B subpixel.

In a liquid crystal display panel having a normal RGB structure as shown in FIG. 1, a unit pixel includes one R subpixel, one G subpixel, and one B subpixel. Various color representations are made possible by RGB combinations within unit pixels. The number of unit pixels determines the display resolution. In a liquid crystal display panel having a normal RGB structure, the number of R subpixels is equal to the display resolution (that is, the number of unit pixels), the number of G subpixels is the same as the display resolution, and the number of B subpixels is the display resolution. Is the same as For example, in a liquid crystal display panel having 1920 (horizontal resolution) * 1080 (vertical resolution) which is FHD, R, G, and B subpixels are each formed at 2073600 which is the same as the display resolution (1920 * 1080).

The resolution of liquid crystal display panels continues to increase. As the resolution increases, the number of data lines supplied with the data voltage from the data driving circuit also increases, and the number of TFTs for switching the current path between the subpixels and the data lines also increases. Since the area where the data lines and the TFTs are formed is covered by the black matrix, the higher the resolution, the lower the aperture ratio and the luminance of the liquid crystal display panel.

The data lines are connected one-to-one to the output channels of the data driving circuit. Therefore, as data lines increase, output channels of the data driving circuit also increase, thereby increasing the size of the data driving circuit. Since the data driving circuit is relatively expensive compared to other components and its configuration is complicated, the larger the size, the higher the power consumption and heat generation of the liquid crystal display.

As described above, when the conventional normal RGB structure is applied to the high resolution liquid crystal display panel, the aperture ratio decreases and power consumption and heat generation increase due to an increase in the size of the data driving circuit.

Accordingly, it is an object of the present invention to provide a liquid crystal display device and a stereoscopic image display device using the same to minimize the decrease in aperture ratio, power consumption, and heat generation even when the resolution is increased.

In order to achieve the above object, the liquid crystal display according to the exemplary embodiment of the present invention has a first color subpixel, a second color subpixel, and a third color subpixel sequentially arranged in a horizontal direction. A liquid crystal display panel in which a unit pixel is composed of two different subpixels adjacent to each other in the horizontal direction, and each of the first to third color subpixels has a number equal to 2/3 of a display resolution; And a data rendering circuit configured to process video data inputted in a larger number than subpixels formed in the liquid crystal display panel using a pre-stored algorithm. Three video data input corresponding to one unit pixel are generated as modulated video data through the rendering process, and then two neighboring left and right neighboring sides are formed using the one unit pixel and the one unit pixel as a center pixel. Subpixels.

The data rendering circuit may multiply two input video data corresponding to a first color and a second color subpixel of the center pixel among the three video data input corresponding to the center pixel by multiplying a first weight to the center pixel. Determine the modulated video data to be applied to, and multiply one of the three video data except the two input video data by a second weight smaller than the first weight to neighbor the left and right of the center pixel. Determine as modulated video data to be applied to the third color subpixel of the surrounding pixels.

The data rendering circuit selects the first weight from 2/3 to 5/6, and selects the second weight from 1/6 to 1/12.

The data rendering circuit selects the first weight as 0.75 and the second weight as 0.125.

The data rendering circuit modulates all the input video data while shifting the position of the center pixel by one unit pixel.

By the rendering process, the center pixel and two subpixels adjacent to the left and right thereof are driven in association.

By the rendering process, the luminance intensity of the center pixel is larger than the two adjacent left and right subpixels.

A stereoscopic image display device according to an embodiment of the present invention has a first color subpixel, a second color subpixel, and a third color subpixel that are sequentially and repeatedly arranged along a horizontal direction, and each unit pixel is in the horizontal direction. A liquid crystal display panel composed of two different subpixels adjacent to each other, wherein each of the first to third color subpixels has a number equal to 2/3 of a display resolution; A patterned retarder for dividing light from the liquid crystal display panel into first polarized light and second polarized light; And a data rendering circuit configured to process video data inputted in a larger number than subpixels formed in the liquid crystal display panel using a pre-stored algorithm. Three video data input corresponding to one unit pixel are generated as modulated video data through the rendering process, and then two neighboring left and right neighboring sides are formed using the one unit pixel and the one unit pixel as a center pixel. Subpixels.

The liquid crystal display and the stereoscopic image display using the same according to the present invention form a unit pixel with two subpixels, thereby minimizing the reduction of the aperture ratio even when the resolution is increased, and also reducing the size of the data driving circuit to reduce power consumption and Fever can be minimized.

Furthermore, the present invention can compensate for the disadvantage that the perceived resolution is lower than the physical resolution of the panel by driving the central pixel and two subpixels adjacent to the left and right through the data rendering process. It is easy to extend the application to the device. In addition, since only one line memory is required for the data rendering process, the present invention is effective to reduce the cost.

1 is a diagram illustrating an arrangement of subpixels and unit pixels in a liquid crystal display panel having a normal RGB structure.
2 illustrates a liquid crystal display according to an exemplary embodiment of the present invention.
FIG. 3 is a view illustrating an arrangement of subpixels and unit pixels in a liquid crystal display panel according to the present invention in comparison with a conventional normal RGB structure. FIG.
4 is a view showing an opening area per subpixel compared to a conventional normal RGB structure when implementing the same display resolution.
5 is a diagram illustrating examples of a rendering filter applied to a rendering algorithm.
6 through 8 illustrate examples in which digitally modulated video data is determined through a rendering algorithm.
9 shows a luminance profile for a center pixel and its left and right subpixels.
FIG. 10 is a diagram illustrating an example in which a center pixel and neighboring left and right subpixels are driven in association with an independent driving in a conventional normal RGB structure. FIG.
11 is a view showing a three-dimensional image display device of the polarizing glasses method using the liquid crystal display device of the present invention as a display element.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 2 to 11.

2 shows a liquid crystal display according to an embodiment of the present invention. 3 is a view illustrating an arrangement of subpixels and unit pixels in a liquid crystal display panel according to the present invention in comparison with a conventional normal RGB structure. In addition, FIG. 4 shows the opening area per subpixel compared to the conventional normal RGB structure when implementing the same display resolution.

2, a liquid crystal display device 100 according to an exemplary embodiment of the present invention includes a liquid crystal display panel 10, a data rendering circuit 11, a timing controller 12, a data driving circuit 13, and a gate driving circuit. The furnace 14 is provided.

The liquid crystal display panel 10 has a liquid crystal layer formed between two glass substrates. In the liquid crystal display panel 10, a plurality of liquid crystal cells Clc arranged in a matrix form are formed by a cross structure of a plurality of data lines DL and a plurality of gate lines GL.

Data lines DL, gate lines GL, TFTs, and storage capacitors Cst are formed on the lower glass substrate of the liquid crystal display panel 10. Each of the liquid crystal cells Clc is connected to a TFT and driven by an electric field between the pixel electrode 1 and the common electrode 2. On the upper glass substrate of the liquid crystal display panel 10, a black matrix, a color filter, and a common electrode 2 are formed. The common electrode 2 is formed on the upper glass substrate in a vertical electric field driving method such as twisted nematic (TN) mode and vertical alignment (VA) mode, and is formed in IPS (In Plane Switching) mode and FFS (Fringe Field Switching) mode. In the same horizontal electric field driving method, the pixel electrode 1 is formed on the lower glass substrate. On the upper glass substrate and the lower glass substrate of the liquid crystal display panel 10, a polarizing plate is attached and an alignment film for setting a pre-tilt angle of the liquid crystal is formed.

An R color filter, a G color filter, and a B color filter are formed in the liquid crystal display panel 10 to implement R (red), G (green), and blue (B), respectively. The liquid crystal cell Clc including the R color filter is implemented with R subpixels, the liquid crystal cell Clc with the G color filter is implemented with G subpixels, and the liquid crystal cell Clc including the B color filter is B subpixels. Is implemented. The opening areas of the R, G and B subpixels are substantially equal to each other. The arrangement of the R, G, and B subpixels is the same as that of the conventional normal RGB structure. As shown in FIG. 3, the R subpixels are arranged in a stripe shape along the vertical direction (the extension direction of the data line), and each of the G and B subpixels is also arranged in the stripe shape along the vertical direction. Then, the R stripe arrangement, the G stripe arrangement, and the B stripe arrangement are sequentially repeated along the horizontal direction (the extension direction of the gate line).

The unit pixel is composed of two subpixels unlike the conventional normal RGB structure. As shown in FIG. 3, the unit pixel of the present invention is a first unit pixel P1 composed of one R subpixel and one G subpixel, and a second unit pixel P2 composed of one B subpixel and one R subpixel. ), And is divided into a third unit pixel P3 including one G subpixel and one B subpixel. In the liquid crystal display panel 10, the unit pixels are repeatedly arranged in the order of the first unit pixel P1, the second unit pixel P2, and the third unit pixel P3 along the horizontal direction. Various color representations are made possible by RG or BR or GB combinations in unit pixels.

The number of unit pixels determines the display resolution. The present invention implements the same display resolution as the conventional normal RGB structure with a smaller number of subpixels than the conventional normal RGB structure. While the conventional normal RGB structure constitutes six unit pixels with 18 subpixels as shown in FIG. 3A, the present invention provides six unit pixels with 12 subpixels as shown in FIG. 3B. Configure The present invention reduces the number of subpixels to two thirds while realizing the same six unit pixels by differently configuring the unit pixels.

In the conventional normal RGB structure, the number of each of the R, G, and B subpixels is equal to the display resolution (that is, the number of unit pixels). However, in the present invention, the number of each of the R, G, and B subpixels is reduced to two thirds of the display resolution (i.e., the number of unit pixels). For example, in a liquid crystal display panel having 1920 (horizontal resolution) * 1080 (vertical resolution), which is an FHD, R, G, and B subpixels are formed of 1382400, which are two thirds of the display resolution (1920 * 1080), respectively.

When the number of subpixels is reduced to two thirds of the display resolution compared to the existing, the number of data lines and the number of TFTs are also reduced to two thirds. As a result, as shown in FIG. 4, the opening area per subpixel is increased compared to the conventional one, and the opening ratio of the liquid crystal display panel 10 is improved. In addition, as the number of data lines is reduced to 2/3, the number of output channels of the data driving circuit 13 and the size of the data driving circuit 13 are also reduced to 2/3, thereby minimizing an increase in power consumption and heat generation.

However, when each unit pixel is composed of two subpixels as in the present invention, the perceived resolution felt by the user may be lower than the physical resolution of the liquid crystal display panel 10. In order to minimize this disadvantage, the present invention receives the digital video data RiGiBi in the same number as in the conventional normal RGB structure, and stores the digital video data RiGiBi as a pre-stored rendering algorithm in the unit of the liquid crystal display panel 10. Modulate according to the pixel structure.

The data driver circuit 13 includes a plurality of data driver ICs. The data driving circuit 13 latches the digitally modulated video data RoGoBo under the control of the timing controller 12, converts the digitally modulated video data into analog positive / negative data voltages, and supplies them to the data lines DL. do. The data drive ICs may be mounted on a tape carrier package (TCP) and bonded to the lower glass substrate of the liquid crystal display panel 10 by a tape automated bonding (TAB) process.

The gate driving circuit 14 includes a shift register, a level shifter for converting an output signal of the shift register into a swing width suitable for driving a TFT of a liquid crystal cell, an output buffer connected between the level shifter and the gate line GL, and the like. do. The gate driving circuit 14 supplies scan pulses having a predetermined pulse width to the gate lines GL under the control of the timing controller 12. The gate driving circuit 14 is mounted on TCP and bonded to the lower glass substrate of the liquid crystal display panel 10 by a TAB process, or the lower glass of the liquid crystal display panel 10 by a GIP (Gate driver In Panel) process. It can be formed directly on the substrate.

The timing controller 12 uses a timing signal such as a horizontal synchronization signal Hsync, a vertical synchronization signal Vsync, a data enable signal DE, and a dot clock DCLK supplied from a system (not shown). A data control signal for controlling the operation timing of the furnace 13 and a gate control signal for controlling the operation timing of the gate driving circuit 14 are generated.

The data control signal is based on a source start pulse SSP, a rising edge, or a falling edge that indicates a sampling start point of the digital video data RGB in the data driving circuit 13. A source sampling clock SSC for instructing latch operation of the digital video data RGB, a source output enable signal SOE for instructing the output of the data driving circuit 13, and the liquid crystal display panel 10 And a polarity control signal POL indicating the polarity of the data voltage to be supplied to the liquid crystal cells Clc. The gate control signal is input to the gate start pulse GSP indicating the start horizontal line at which scanning starts in one vertical period in which one screen is displayed, and to the shift register in the gate driving circuit 14 to sequentially process the gate start pulse GSP. As a timing control signal for shifting the signal, the gate shift clock signal GSC generated at a pulse width corresponding to the ON period of the TFT and the gate output enable signal GOE instructing the output of the gate driving circuit 14 are output. And the like.

The timing controller 12 supplies digitally modulated video data RoGoBo supplied from the data rendering circuit 11 to the data driving circuit 13.

The data rendering circuit 11 receives digital video data RiGiBi from the system. When the display resolution of the liquid crystal display panel 10 is "A", the number of input digital video data RiGiBi is selected to be 3 * A. The data rendering circuit 11 renders 3 * A input digital video data RiGiBi by using a pre-stored rendering algorithm to generate digitally modulated video data RoGoBo.

In order to modulate the input digital video data RiGiBi according to the unit pixel configuration of the liquid crystal display panel, the data rendering circuit 11 may include a first color and a first color of the center pixel among the three video data RiGiBi inputted corresponding to the center pixel. Two input video data (RiGi or GiBi or BiRi) corresponding to the second color subpixel (RG or GB or BR) are multiplied by a first weight to determine modulated video data (RoGo or GoBo or BoRo) to be applied to the center pixel. do. The data rendering circuit 11 further includes one input video data Bi or Ri other than the two input video data RiGi or GiBi or BiRi among the three video data RiGiBi input corresponding to the center pixel. Or by multiplying Gi by a second weight less than the first weight to modulated video data Bo or Ro or Go to be applied to a third color subpixel B or R or G of neighboring pixels left and right adjacent to the center pixel. Decide

5 shows an example of a rendering filter applied to a rendering algorithm. 6 to 8 show examples in which digitally modulated video data RoGoBo is determined through a rendering algorithm. 9 shows a luminance profile for a center pixel and neighboring left and right subpixels. 10 illustrates an example in which a center pixel and neighboring left and right subpixels are driven in cooperation with independent driving in a conventional normal RGB structure.

The data rendering circuit 11 may use a [1: 3] rendering filter for a rendering process. [1: 3] The weighting sum of the rendering filters is one. In the [1: 3] rendering filter, the smaller the second weight applied to the peripheral left and right subpixels, the larger the first weight applied to the center pixel. In this case, sharpness of the display image may be improved, but a jagging shape may be generated. On the other hand, in the [1: 3] rendering filter, the larger the second weight applied to the peripheral left and right subpixels, the smaller the first weight applied to the center pixel. In this case, jagging is not generated, but the sharpness is reduced and the display image is blurred. Therefore, in consideration of the display quality of the image, the first weight applied to the center pixel is selected from 2/3 to 5/6, and the second weight applied to peripheral left and right subpixels is selected from 1/6 to 1/12. This is preferred. For example, as shown in FIG. 5, in the [1: 3] rendering filter, the first weight may be selected as 0.75 and the second weight may be selected as 0.125.

As shown in FIG. 6, when the unit pixel disposed at the intersection of the nth column line Cn and the nth row line Rn is selected as the center pixel, the data rendering circuit 11 uses the rendering filter as shown in FIG. 5. Modulated to be applied to the center pixel by giving a first weight α1 to two input data BiRi corresponding to B and R subpixels of the center pixel among the three data RiGiBi input corresponding to the center pixel. Determined by data (BoRo). The data rendering circuit 11 multiplies a second weight α2 by one input data Gi except for the two input data BiRi among the three data RiGiBi input corresponding to the center pixel. The modulation data Go to be applied to the G subpixels of neighboring pixels adjacent to the center pixel is determined.

Also, as shown in FIG. 7, when the unit pixel disposed at the intersection of the n + 1th column line Cn + 1 and the nth low line Rn is selected as the center pixel, the data rendering circuit 11 may include the data rendering circuit 11. A first weight α1 is applied to two input data GiBi corresponding to the G and B subpixels of the center pixel among the three data RiGiBi inputted corresponding to the center pixel by using a rendering filter such as The modulation data GoBo to be applied to the center pixel is determined. The data rendering circuit 11 multiplies a second weight α2 by one input data Ri except for the two input data GiBi among the three data RiGiBi input corresponding to the center pixel. The modulation data Ro to be applied to the R subpixels of neighboring pixels adjacent to the center pixel is determined.

Also, as shown in FIG. 8, when the unit pixel disposed at the intersection of the n + 2th column line Cn + 2 and the nth low line Rn is selected as the center pixel, the data rendering circuit 11 may include the FIG. The first weight α1 is applied to two input data RiGi corresponding to the R and G subpixels of the center pixel among the three data RiGiBi inputted corresponding to the center pixel using a rendering filter such as The modulation data RoGo to be applied to the center pixel is determined. The data rendering circuit 11 multiplies the second input data Bi by the second weight α2 among the three data RiGiBi input corresponding to the center pixel except for the two input data RiGi. The modulation data Bo to be applied to the B subpixels of neighboring pixels adjacent to the center pixel is determined.

As described with reference to FIGS. 6 to 8, the data rendering circuit 11 modulates all input digital video data RiGiBi by the rendering processing method while shifting the position of the center pixel by one pixel. In the conventional normal RGB structure, unit pixels are driven independently. In contrast, the present invention modulates three input data corresponding to one center pixel through the rendering processing method to drive the center pixel and two subpixels adjacent to the left and right sides. For example, in the case of displaying an image as shown in FIG. 9A, in the conventional normal RGB structure, unit pixels are independently driven as shown in FIG. 9B, whereas in the present invention, FIG. As shown in FIG. 2), the corresponding center pixel and two subpixels adjacent to the left and right sides thereof are driven in conjunction with each other. In the present invention, the luminance intensity of the center pixel is larger than that of two adjacent subpixels as shown in FIG. 10. This is because the weight applied to the center pixel when determining modulation data is larger than the weight applied to two adjacent subpixels. Through this, the present invention compensates for the disadvantage that the cognitive resolution is lower than the physical resolution of the panel.

Since the present invention drives the center pixel and two subpixels adjacent to the left and right adjacent to each other, only one line memory needs to be provided for data modulation. In the case of driving the center pixel and four subpixels adjacent to each other up, down, left, and right, in addition to the one line memory, two additional line memories are required. The present invention is effective in reducing costs because the number of line memories required is small.

In addition, since the liquid crystal display device 100 of the present invention drives the center pixel and two sub-pixels adjacent to the left and right adjacent to each other, the liquid crystal display device 100 may be used as a display element of a polarized glasses type stereoscopic image display device as shown in FIG. . In the stereoscopic image display device of FIG. 11, left eye image data and right eye image data are alternately applied in units of horizontal pixel lines. If a liquid crystal display device which drives the center pixel and four subpixels adjacent to each other up, down, left, and right, is used as a display element of the stereoscopic image display device as shown in FIG. 11, the left eye image data is placed on a horizontal pixel line for displaying the right eye image. The display and the right eye image data are displayed on the horizontal pixel lines for the left eye image display, so that the generation of 3D crosstalk is aggravated. Therefore, such a liquid crystal display device cannot be used as a display element of a stereoscopic image display device as shown in FIG.

FIG. 11 schematically illustrates a stereoscopic image display device using polarized glasses based on the liquid crystal display device 100 of the present invention.

Referring to FIG. 11, the stereoscopic image display device includes a display element 100, a patterned retarder 200, polarized glasses 300, and the like.

The display device 100 may be implemented with the liquid crystal display of the present invention described with reference to FIGS. 2 to 10. The stereoscopic image display device may further include an upper polarizer (not shown) positioned between the liquid crystal display panel of the display device 100 and the patterned retarder 200. The patterned retarder 200 and the polarizing glasses 300 are stereoscopic image implementing elements that spatially separate a left eye image and a right eye image to create binocular disparity. The left eye image and the right eye image are alternately displayed in a line by line form on the liquid crystal display panel of the display device 100. The upper polarizer transmits only specific linearly polarized light from the incident light through the liquid crystal layer of the liquid crystal display panel.

The patterned retarder 200 is attached on the upper polarizer of the display device 100. First retarder patterns are formed in odd lines of the patterned retarder 200, and second retarder patterns are formed in even lines of the patterned retarder 200. The first retarder pattern is disposed to face display lines on which the left eye image is displayed on the display device 100, and the second retarder pattern is disposed to face display lines on which the right eye image is displayed on the display device 100. Can be. The light absorption axis of the first retarder pattern and the light absorption axis of the second retarder pattern are different from each other. The first retarder pattern delays the phase of the linearly polarized light with respect to the left eye image incident through the upper polarizer by 1/4 wavelength to pass the incident light through the first polarized light (eg, left circularly polarized light). The second retarder pattern delays the phase of the linearly polarized light with respect to the right eye image incident through the upper polarizer by 3/4 wavelength to pass the incident light through the second polarized light (eg, right circularly polarized light). The first retarder pattern may be implemented as a polarization filter that transmits the left circular polarization component and blocks the right circular polarization component, and the second retarder pattern may be implemented as a polarization filter that transmits the right circular polarization component and blocks the left circular polarization component have.

A polarizing film for passing only the first polarization component is bonded to the left eye of the polarizing glasses 300, and a polarizing film for passing only the second polarization component is bonded to the right eye of the polarizing glasses 300. Therefore, the viewer wearing the polarized glasses 300 sees only the left eye image to the left eye, and only the right eye image to the right eye, so that the image displayed on the display device 100 is felt as a stereoscopic image.

As described above, the liquid crystal display according to the present invention and the stereoscopic image display using the same constitute a unit pixel with two subpixels, thereby minimizing the reduction of the aperture ratio even when the resolution is increased, and also reducing the size of the data driving circuit. Power consumption and heat generation can be minimized.

Furthermore, the present invention can compensate for the disadvantage that the perceived resolution is lower than the physical resolution of the panel by driving the central pixel and two subpixels adjacent to the left and right through the data rendering process. It is easy to extend the application to the device. In addition, since only one line memory is required for the data rendering process, the present invention is effective to reduce the cost.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the present invention should not be limited to the details described in the detailed description, but should be defined by the claims.

10 liquid crystal display panel 11 data rendering circuit
12: timing controller 13: data drive circuit
14 gate driving circuit 100 display element (liquid crystal display device)
200: patterned retarder 300: polarized glasses

Claims (10)

And a first color subpixel, a second color subpixel, and a third color subpixel sequentially arranged in a horizontal direction, and each unit pixel includes two different subpixels adjacent in the horizontal direction. A liquid crystal display panel in which each of the first to third color subpixels is formed in a number equal to 2/3 of a display resolution; And
A data rendering circuit configured to process video data inputted in a larger number than subpixels formed in the liquid crystal display panel using a pre-stored algorithm;
Three video data input corresponding to one unit pixel are generated as modulated video data through the rendering process, and then two neighboring left and right neighboring sides are formed using the one unit pixel and the one unit pixel as a center pixel. And sub-pixels. The method of claim 1,
The data rendering circuit,
Modulated video data to be applied to the center pixel by multiplying a first weight by two input video data corresponding to a first color and a second color subpixel of the center pixel among the three video data input corresponding to the center pixel The third color of neighboring pixels neighboring left and right adjacent to the center pixel by multiplying one input video data except the two input video data among the three video data by a second weight smaller than the first weight. And modulated video data to be applied to the subpixels. The method of claim 1,
And the data rendering circuit selects the first weight from 2/3 to 5/6 and selects the second weight from 1/6 to 1/12. The method of claim 1,
And the data rendering circuit selects the first weight as 0.75 and the second weight as 0.125. The method of claim 1,
And the data rendering circuit modulates all input video data while shifting the position of the center pixel by one pixel. 3. The method of claim 2,
And the subpixels adjacent to the center pixel and the left and right adjacent to each other are driven by the rendering process. 3. The method of claim 2,
And the luminance intensity of the center pixel is greater than the two adjacent left and right subpixels by the rendering process. And a first color subpixel, a second color subpixel, and a third color subpixel sequentially arranged in a horizontal direction, and each unit pixel includes two different subpixels adjacent in the horizontal direction. A liquid crystal display panel in which each of the first to third color subpixels is formed in a number equal to 2/3 of a display resolution;
A patterned retarder for dividing light from the liquid crystal display panel into first polarized light and second polarized light; And
A data rendering circuit configured to process video data inputted in a larger number than subpixels formed in the liquid crystal display panel using a pre-stored algorithm;
Three video data input corresponding to one unit pixel are generated as modulated video data through the rendering process, and then two neighboring left and right neighboring sides are formed using the one unit pixel and the one unit pixel as a center pixel. And a subpixel applied to the three subpixels. The method of claim 8,
First retarder patterns for transmitting light from the liquid crystal display panel with the first polarization are formed in the odd lines of the patterned retarder, and even lines of the patterned retarder are formed from the liquid crystal display panel. A second retarder pattern is formed that transmits light with the second polarization;
The first retarder pattern is disposed to face display lines on which a left eye image is displayed on the liquid crystal display panel, and the second retarder pattern is disposed to face display lines on a right eye image on the liquid crystal display panel. Stereoscopic display device characterized in that the. The method of claim 8,
The data rendering circuit,
Modulated video data to be applied to the center pixel by multiplying a first weight by two input video data corresponding to a first color and a second color subpixel of the center pixel among the three video data input corresponding to the center pixel The third color of neighboring pixels neighboring left and right adjacent to the center pixel by multiplying one input video data except the two input video data among the three video data by a second weight smaller than the first weight. And determining the modulated video data to be applied to the subpixel.

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