KR20160083151A - Stereoscopic image display device - Google Patents

Abstract

An embodiment of the present invention relates to a stereoscopic image display device which enables a user to watch a stereoscopic image without changing an optimum viewing distance even when the user pivots the device. The stereoscopic image display device according to the embodiment of the present invention comprises: a display panel comprising pixels including sub pixels having parallelogram type apertures; and a stereoscopic lens which is arranged on the display panel, and includes multiple lenses inclined at an angle of 45 degrees as to one side of the pixel. A pair of parallelogram type sides of the apertures are inclined at a first angle as to one side of the pixel.

Description

[0001] STEREOSCOPIC IMAGE DISPLAY DEVICE [0002]

The present invention relates to a stereoscopic image display apparatus of a non-eyeglass system.

The stereoscopic display is divided into a stereoscopic technique and an autostereoscopic technique. The binocular parallax method uses parallax images of right and left eyes with large stereoscopic effect, and both glasses and non-glasses are used, and both methods are practically used. In the spectacle method, polarized light of right and left parallax images is displayed alternately on a direct view type display device or a projector, a stereoscopic image is implemented using polarizing glasses, a right and left parallax image is displayed in a time division manner, and a stereoscopic image is implemented using shutter glasses. In the non-eyeglass system, an optical plate such as a parallax barrier or a lenticular sheet is generally used to separate the optical axes of the left and right parallax images to realize a stereoscopic image.

The non-eyeglass system is applicable to small and medium-sized displays such as a smart phone, a tablet, and a notebook because the user can conveniently view stereoscopic images without wearing shutter glasses or polarizing glasses have. In particular, in the case of a smartphone or a tablet which has recently been commercialized, a pivot can be implemented as shown in FIGS. 1A and 1B. Therefore, when a user views a smart phone or a tablet as a portrait view as shown in FIG. The user can view the image or image even if the user views the image.

FIG. 2A is an exemplary view showing an optimal viewing distance when a portrait is viewed using a smartphone or a tablet as shown in FIG. 1A. Referring to FIG. 2A, when a smartphone or a tablet is viewed vertically, each of the pixels of the smartphone or the tablet is disposed such that the short axis is in the y axis direction and the long axis is in the x axis direction. The lens L for implementing a stereoscopic image may be formed for each of two pixels with reference to the long axis of each of the pixels as shown in FIG. 2A. The lens refracts the left eye image L displayed on the left eye pixels LP to the left eye of the user and refracts the right eye image R displayed on the right eye pixels RP to the right eye of the user, So that the stereoscopic image can be viewed.

FIG. 2B is an exemplary view showing an optimal viewing distance when a landscape view is viewed using a smartphone or a tablet as shown in FIG. 1B. Referring to FIG. 2B, when the smartphone or the tablet is viewed horizontally, each of the pixels of the smartphone or the tablet is disposed such that the short axis is in the x-axis direction and the long axis is in the y-axis direction. The lens for implementing a stereoscopic image may be formed for each of two pixels with reference to the short axis of each of the pixels as shown in FIG. 2B. The lens refracts the left eye image L displayed on the left eye pixels LP to the left eye of the user and refracts the right eye image R displayed on the right eye pixels RP to the right eye of the user, So that the stereoscopic image can be viewed.

On the other hand, the optimal viewing distance D of the user is inversely proportional to the back distance S and the binocular distance E, and is inversely proportional to the refractive index n of the lens L and the pitch P of the pixel, . The back distance S indicates the distance from the pixels LP and RP to the lens L and the binocular distance E can be set to approximately 65 mm as the distance between the eyes of the user.

The back distance S, the binocular distance E, and the refractive index n of the lens L remain unchanged regardless of whether the portrait view or the landscape view is used. However, in the case of vertical viewing as in FIG. 2A, the pixel pitch P is the pixel pitch Pp while the pixel pitch P is the dot pitch Pd in the horizontal viewing as shown in FIG. 2B. When the pixel includes three sub-pixels of a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the pixel pitch Pp may be set to three times the dot pitch Pd.

As a result, since the pitch P of the pixels varies in the vertical and horizontal views of the smartphone or the tablet, the optimal viewing distance D capable of optimally viewing the stereoscopic image is changed. That is, in the case of landscape viewing as shown in FIG. 2B, the optimal viewing distance 3d corresponds to three times the optimal viewing distance d when viewed vertically as shown in FIG. 2A. Therefore, when the user pivots the smartphone or the tablet, the optimal viewing distance D is changed. Therefore, the 3D crosstalk (R) overlaps with the left eye image L and the right eye image R until the optimal viewing distance D is found (crosstalk).

The embodiment of the present invention provides a stereoscopic image display device capable of viewing a stereoscopic image without changing the optimum viewing distance even when a user pivots.

A display panel including pixels including sub-pixels having openings of a parallelogram shape; And a stereoscopic lens disposed on the display panel, the stereoscopic lens including a plurality of lenses inclined at 45 degrees to either side of the pixel, wherein a pair of parallel sides of the openings are aligned with a first side And is inclined at an angle.

Embodiments of the present invention implement each of the lenses of the stereoscopic lens with slanted lenses slanted at an angle of 45 degrees with respect to either side of the sub-pixels. Further, the embodiment of the present invention implements such that a pair of parallel sides of the openings (OPs) in the form of parallelograms of sub-pixels incline obliquely at 45 degrees to either side of the sub-pixels. As a result, in the embodiment of the present invention, since the pitch of the pixels can be made constant in the vertical viewing and in the horizontal viewing, the optimum viewing distance for viewing the stereoscopic image can be kept constant. That is, the embodiment of the present invention can view the stereoscopic image without changing the optimal viewing distance even when the user pivots.

Further, even when the embodiment of the present invention is implemented such that a pair of parallel sides of the openings of the parallelogram shape of the sub-pixels are inclined at an angle of 45 +/- alpha to either side of the sub-pixel, The pitch of the pixels can be made constant. As a result, the embodiment of the present invention can maintain an optimum viewing distance for viewing the stereoscopic image at an optimum level. That is, the embodiment of the present invention can view the stereoscopic image without changing the optimal viewing distance even when the user pivots.

In an embodiment of the present invention, the sum of the length of the first boundary line overlapping one of the openings of the sub-pixels and the length of the first boundary line overlapping the opening adjacent to the one of the sub- The sum of the length of the second boundary line overlapping one of the openings of the sub-pixels and the length of the second boundary line overlapping the opening adjacent to the one of the sub-pixels is always kept constant. As a result, the embodiment of the present invention can maintain the area of the openings of the left eye area and the area of the openings of the right eye area substantially the same even if the openings of the sub pixels are overlapped with respect to the first and second boundary lines. Therefore, the embodiment of the present invention can keep the luminance of the left eye image refracted by the left eye area and the luminance of the right eye image refracted by the right eye area substantially the same. Therefore, the embodiment of the present invention can solve the problem that the user feels a luminance difference between the eyes due to variations in the manufacturing process.

Figures 1A and 1B illustrate an example of a pivot function of a smartphone or tablet.
FIG. 2A is an exemplary view showing an optimal viewing distance when a portrait is viewed using a smartphone or a tablet as shown in FIG. 1A. FIG.
FIG. 2B is an exemplary view showing an optimal viewing distance when a landscape view is viewed using a smartphone or a tablet as shown in FIG. 1B. FIG.
3 is a block diagram illustrating a stereoscopic image display apparatus according to an embodiment of the present invention.
4 is a circuit diagram showing the pixel of FIG. 3 in detail;
5 is a cross-sectional view showing the display panel and the stereoscopic lens of FIG. 3 in detail;
6 is an exemplary view showing transistors, pixel electrodes, and openings of sub-pixels when the pixel has a square shape.
FIG. 7 is an exemplary view showing the openings of the sub-pixels and the lenses of the stereoscopic lens of FIG. 6 in vertical view. FIG.
FIG. 8 is an exemplary view showing the apertures of the sub-pixels and the lenses of the stereoscopic lens of FIG. 6 in the landscape view. FIG.
FIG. 9A is an exemplary view showing a case where the sub-pixels of FIG. 5 are overlapped with respect to a boundary line between lenses due to a deviation of a manufacturing process.
FIG. 9B is an exemplary view showing a case where the sub-pixels of FIG. 5 are spaced apart from each other with reference to a boundary line between the lenses due to a deviation of a manufacturing process.
FIG. 10A is a graph showing the window profile in the case of FIG. 7; FIG.
FIG. 10B is a graph showing the window profile in the case of FIG. 9A. FIG.
FIG. 10C is a graph showing the window profile in the case of FIG. 9B. FIG.
11 is another exemplary view showing transistors, pixel electrodes, and openings of sub-pixels when the pixel has a square shape.
12 is an exemplary view showing the pixels of Fig. 11 and the lenses of the stereoscopic lens when viewed in portrait; Fig.
FIG. 13 is an exemplary view showing lenses of a pixel and a stereoscopic lens of FIG. 11 in a landscape view. FIG.
14 is an exemplary view showing transistors, pixel electrodes, and openings of sub-pixels when the pixel has a rectangular shape.
15 is an exemplary view showing lenses of the pixel and the stereoscopic lens of Fig. 14 when viewing in portrait; Fig.
Fig. 16 is an exemplary view showing the pixels of Fig. 14 and the lenses of a stereoscopic lens when viewed in a landscape view. Fig.
17 is another exemplary view showing transistors, pixel electrodes, and openings of sub-pixels when the pixel has a rectangular shape.
FIG. 18 is an exemplary view showing the pixels of FIG. 17 and the lenses of a stereoscopic lens when viewed in portrait; FIG.
Fig. 19 is an exemplary view showing lenses of a pixel and a stereoscopic lens in Fig. 17 in a landscape view; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Like reference numerals throughout the specification denote substantially identical components. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The component name used in the following description may be selected in consideration of easiness of specification, and may be different from the actual product name.

3 is a block diagram illustrating a stereoscopic image display apparatus according to an exemplary embodiment of the present invention. 4 is a circuit diagram showing the pixel of FIG. 3 in detail. 5 is a cross-sectional view showing the display panel and the stereoscopic lens of FIG. 3 in detail.

3 to 5, a stereoscopic image display apparatus according to an embodiment of the present invention includes a display panel 10, a stereoscopic lens 20, a gate driver 30, a data driver 40, a timing controller 50, Respectively.

A stereoscopic image display device according to an exemplary embodiment of the present invention includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), and an organic light emitting diode Or a flat panel display device such as an organic light emitting diode (OLED). The present invention has been described with reference to the embodiments in which the stereoscopic image display device according to the embodiment of the present invention is implemented as a liquid crystal display device, but it should be noted that the present invention is not limited thereto.

The display panel 10 displays an image using pixels. The display panel 10 includes a lower substrate 110, an upper substrate 120, and a liquid crystal layer 130 interposed between the lower substrate 110 and the upper substrate 120. Data lines (D1 to Dm, m is a positive integer of 2 or more) and gate lines (G1 to Gn, n are positive integers of 2 or more) are formed on the lower substrate 110 of the display panel 10. The data lines D1 to Dm may intersect the gate lines G1 to Gn.

The pixels may include a plurality of sub-pixels SP. For example, the pixels may include a red subpixel RP, a green subpixel GP, a blue subpixel BP, and a white subpixel WP as shown in FIG.

The sub-pixels SP may be formed at the intersections of the data lines D1 to Dm and the gate lines G1 to Gn as shown in FIG. Each of the sub-pixels SP may be connected to a data line and a gate line. Each of the subpixels P may include a transistor T, a pixel electrode 11, a common electrode 12, a liquid crystal cell 13, and a storage capacitor Cst as shown in FIG. The transistor T is turned on by the gate signal of the k-th gate line Gk (k is a positive integer satisfying 1? K? N) so that the jth (j is a positive And supplies the data voltage of the data line Dj to the pixel electrode 11. [ The common electrodes 12 are connected to a common line to receive a common voltage from the common line. Each of the sub pixels P drives the liquid crystal of the liquid crystal cell 13 by an electric field generated by a potential difference between the data voltage supplied to the pixel electrode 11 and the common voltage supplied to the common electrode 12 So that the amount of light transmitted from the backlight unit can be adjusted. As a result, the sub-pixels P can display an image. The storage capacitor Cst is provided between the pixel electrode 11 and the common electrode 12 to keep the potential difference between the pixel electrode 11 and the common electrode 12 constant.

A black matrix 14 and color filters 15 may be formed on the upper substrate 120 of the display panel 10. The color filters 15 are provided in the openings OP not covered by the black matrix 14 as in Fig. On the other hand, a red color filter 15a is provided on the red sub-pixel RP, a green color filter 15b is provided on the green sub-pixel GP and a blue color filter 15c is provided on the blue sub- . A color filter is not provided on the white sub-pixel WP. The black matrix 14 and the color filters 15 may be formed on the lower substrate 110 of the display panel 10 when the display panel 10 is formed of a color filter on TFT (COT) .

An alignment film may be formed on each of the lower substrate 110 and the upper substrate 120 of the display panel 10 to attach a polarizing plate and set a pre-tilt angle of the liquid crystal. A column spacer for maintaining a cell gap of the liquid crystal layer 130 may be formed between the lower substrate 110 and the upper substrate 120 of the display panel 10. [

A backlight unit may be disposed below the lower substrate 110 of the display panel 10. [ The backlight unit is implemented as an edge type or direct type backlight unit to irradiate the display panel 10 with light.

The stereoscopic lens 20 is disposed on the display panel 10. The stereoscopic lens 20 may be implemented by a lenticular lens sheet including a plurality of lenses L or a liquid crystal lens for controlling the liquid crystal of the liquid crystal layer to form the lenses L. [ When the stereoscopic lens 20 is implemented as a lenticular lens sheet, it may include a base substrate BS and a plurality of lenses L provided on the base substrate BS, as shown in FIG. The plurality of lenses L may be slanted lenses obliquely inclined with respect to either side of the sub-pixels SP as shown in FIG. A detailed description of the plurality of lenses L will be described later in conjunction with FIG. 7 and FIG.

The gate driver 30 generates gate signals according to a gate control signal GCS input from the timing controller 50. [ The gate driver 30 supplies the gate signals to the gate lines G1 to Gn in a predetermined order. The predetermined order may be a sequential order.

The data driver 40 receives the digital video data DATA and the data control signal DCS from the timing controller 50. The data driver 40 converts the digital video data DATA into analog data voltages according to the data control signal DCS. The data driver 40 supplies the data voltages to the data lines D1 to Dm.

The timing controller 40 receives digital video data (DATA) and timing signals from the outside. The timing signals may include a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, a dot clock, and the like. The vertical synchronization signal is a signal defining one frame period. The horizontal synchronizing signal is a signal which defines one horizontal period for supplying data voltages to the pixels of one horizontal line of the liquid crystal display panel 10. [ The pixels of one horizontal line can be connected to the same gate line. The data enable signal is a signal defining a period during which effective digital video data is supplied. The dot clock is a signal repeated in a predetermined short period.

The timing control unit 40 generates a gate control signal GCS for controlling the operation timing of the gate driving unit 20 and a data control signal DCS for controlling the operation timing of the data driving unit 30 based on the timing signals . The timing controller 40 outputs a gate control signal GCS to the gate driver 20 and digital video data DATA and a data timing control signal DCS to the data driver 30. [

6 is an exemplary view showing transistors, pixel electrodes, and openings of sub-pixels when the pixel has a square shape. 7 is an exemplary view showing the openings of the sub-pixels and the lenses of the stereoscopic lens of FIG. 6 in vertical view. 8 is an exemplary view showing the lenses of the stereoscopic lens and the apertures of the sub-pixels of FIG. 6 in the landscape view. In FIGS. 6 to 8, for the sake of convenience of explanation, the sub-pixels connected to the k-th and (k + 1) -th gate lines Gk and Gk + 1 and the j- and j + 1-th data lines Dj and Dj + The transistors T, the pixel electrodes PE, and the openings OP of the pixels RP, GP, BP and WP are illustrated.

6 to 8, each of the lenses L of the stereoscopic lens 20 includes a slanted lens 45 slanted at an angle of 45 degrees with respect to either side of the sub-pixels RP, GP, BP, or slanted lenses. Each of the lenses L of the stereoscopic lens 20 includes a left eye region LU arranged on sub pixels displaying a left eye image and a right eye region RU aligned on sub pixels displaying a right eye image . The left eye region LU refracts the left eye image displayed on the sub pixels to the left eye of the user, and the right eye region RU refracts the right eye image displayed on the sub pixels to the user's right eye. 6 to 8 show first boundary lines corresponding to the boundary lines BL1 between the lenses L of the stereoscopic lens 20 and "BL2" And second boundary lines corresponding to the boundary lines BL2 between the area LU and the right-eye area RU.

Each of the pixels P has a square shape and includes four sub-pixels. At this time, each of the four sub-pixels may have a square shape. 6 to 8 illustrate that the four sub-pixels are the red sub-pixel RP, the green sub-pixel GP, the blue sub-pixel BP, and the white sub-pixel WP. However, shall. 6 to 8, sub-pixels connected to the kth gate line Gk and the jth data line Dj are referred to as a red subpixel RP, a kth gate line Gk, and a (j + 1) The sub-pixel connected to the first sub-pixel Dj is referred to as a green sub-pixel GP, the sub-pixel connected to the (k + 1) -th gate line Gk + 1 and the j-th data line Dj is referred to as a white sub- Pixels connected to the (j + 1) th gate line Gk + 1 and the (j + 1) th data line Dj are blue subpixels BP. However, the present invention is not limited thereto.

The transistor T of each of the sub pixels RP, GP, BP, and WP is turned on by the gate signal of the gate line to supply the data voltage of the data line to the pixel electrode PE. Each of the sub pixels RP, GP, BP and WP drives the liquid crystal layer in accordance with the potential difference between the data voltage supplied to the pixel electrode PE and the common voltage supplied to the common electrode, Adjust the amount of permeation.

Each of the sub pixels RP, GP, BP and WP has an opening OP of a parallelogram shape. When each of the pixel P and the sub pixels RP, GP, BP, WP has a square shape, it is preferable that the opening OP has a square shape as shown in FIG. 6 in order to maximize the aperture ratio.

In addition, a pair of parallel sides of the openings OP of the sub pixels RP, GP, BP, WP may be inclined at a first angle relative to either side of the sub pixel. In Figs. 6 to 8, the first angle is 45 degrees. In this case, since each of the lenses L of the stereoscopic lens 20 is also slanted lenses obliquely inclined at 45 degrees with respect to either side of the sub pixels RP, GP, BP, WP A pair of parallel sides of the openings OP of the sub pixels RP, GP, BP and WP may coincide with the first and second boundary lines BL1 and BL2. That is, any one of the pair of parallel sides of the opening OP of the sub-pixels may coincide with the first boundary line BL1, and the other of the pair of parallel sides may coincide with the second boundary line BL2.

The remaining regions of the sub pixels RP, GP, BP, and WP excluding the openings OP are covered by the black matrix 14. 5, a red color filter 15a is provided in the opening OP of the red sub pixel RP, a green color filter 15b is provided in the opening OP of the green sub pixel GP, A blue color filter 15c is provided at the opening OP of the pixel BP.

It is preferable that the openings OP of each of the sub pixels RP, GP, BP, and WP are formed to be narrower than the pixel electrodes PE. When the opening OP of each of the sub pixels RP, GP, BP and WP is formed wider than the pixel electrode PE, there may arise a problem that the area to be covered like the transistor T is not covered.

As described above, in the embodiment of the present invention, each of the lenses L of the stereoscopic lens 20 is inclined at an angle of 45 degrees with respect to either side of the sub-pixels RP, GP, BP, And a pair of parallel sides of the openings OP in the parallelogram shape of the sub pixels RP, GP, BP and WP are formed as slanted lenses, And is inclined at an angle of 45 degrees relative to one side. As a result, in the embodiment of the present invention, since the pixel pitch can be made constant in vertical viewing as shown in FIG. 7 and horizontal viewing as shown in FIG. 8, it is possible to optimize The viewing distance D can be kept constant. That is, the embodiment of the present invention can view the stereoscopic image without changing the optimal viewing distance even when the user pivots.

On the other hand, in order to keep the luminance of the left eye image refracted by the left eye area LU of each lens L of the stereoscopic lens 20 and the luminance of the right eye image refracted by the right eye area RU constant, It is preferable that a pair of parallel sides of the openings OP of the pixels RP, GP, BP, WP are formed so as to coincide with the first and second boundary lines BL1, BL2. In this case, since the area of the openings OP of the left eye region LU and the area of the openings OP of the right eye region RU are substantially equal to each other, the left eye region LU refracted by the left eye region LU, The luminance L of the right eye image refracted by the luminance L and the right eye region RU may be substantially the same.

However, due to the deviation in the manufacturing process, it is possible to prevent overlapping of the openings OP of the sub-pixels RP, GP, BP, WP with reference to the first and second boundary lines BL1, BL2 as shown in FIG. OLA) may exist. 9A, the opening OP of the red sub-pixel RP overlaps the opening OP of the white sub-pixel WP with respect to the first boundary line BL1 in the overlap region OLA, BL2 of the green subpixel GP with the opening OP of the green subpixel GP. In this case, as shown in FIG. 10B, the brightness 2L in the overlapping area OLA is the sum of the brightness L of the left eye image refracted by the left eye area LU and the brightness of the right eye image refracted by the right eye area RU L). ≪ / RTI > Accordingly, when any one of the binocular eyes of the user is located in the overlapping area OLA, the user may experience a luminance difference between the binocular eyes.

9B, the gap OP between the openings OP of the sub-pixels RP, GP, BP, and WP is spaced apart from the first and second boundary lines BL1 and BL2 by a predetermined distance gap region (GA) may exist. The opening OP of the red sub-pixel RP in the gap region GA is spaced apart from the opening OP of the white sub-pixel WP with respect to the first boundary line BL1, BL2 are spaced apart from the opening OP of the green sub-pixel GP. In this case, the luminance in the gap region GA may be nearly black as shown in Fig. 10C. Accordingly, when one of the eyes of the user is located in the gap area GA, the user may experience a luminance difference between the eyes.

As described above, the embodiment of the present invention described with reference to FIGS. 6 to 8 may cause a problem that the user feels a difference in brightness between the eyes due to a variation in the manufacturing process. The embodiment of the present invention shows another embodiment in which the above problems can be solved in conjunction with Figs. 11 to 13. Fig.

11 is another exemplary view showing transistors, pixel electrodes, and openings of sub-pixels when the pixel has a square shape. 12 is an exemplary view showing the lenses of the pixel and the stereoscopic lens of FIG. 11 in the portrait view. FIG. 13 is an exemplary view showing the pixels of FIG. 11 and the lenses of a stereoscopic lens when viewed in a landscape view. In FIGS. 11 to 13, for convenience of explanation, the sub-scan lines connected to the kth and (k + 1) -th gate lines Gk and Gk + 1 and the (j + j) th data lines Dj and Dj + The transistors T, the pixel electrodes PE, and the openings OP of the pixels RP, GP, BP and WP are illustrated.

The lenses L, the first and second boundary lines BL1 and BL2 of the stereoscopic lens 20 shown in Figs. 11 to 13 are substantially the same as those described with reference to Figs. 6 to 8. Fig. Therefore, detailed descriptions of the lenses L, the first and second boundary lines BL1 and BL2 of the stereoscopic lens 20 shown in Figs. 11 to 13 are omitted.

11 to 13, each of the pixels P has a square shape and includes four sub-pixels. At this time, each of the four sub-pixels may have a square shape. 11 to 13 illustrate that the four sub-pixels are the red sub-pixel RP, the green sub-pixel GP, the blue sub-pixel BP, and the white sub-pixel WP, shall. 11 to 13, sub-pixels connected to the k-th gate line Gk and the j-th data line Dj are referred to as a red sub-pixel RP, a k-th gate line Gk, The sub-pixel connected to the first sub-pixel Dj is referred to as a green sub-pixel GP, the sub-pixel connected to the (k + 1) -th gate line Gk + 1 and the j-th data line Dj is referred to as a white sub- Pixels connected to the (j + 1) th gate line Gk + 1 and the (j + 1) th data line Dj are blue subpixels BP. However, the present invention is not limited thereto.

The transistor T of each of the sub pixels RP, GP, BP, and WP is turned on by the gate signal of the gate line to supply the data voltage of the data line to the pixel electrode PE. Each of the sub pixels RP, GP, BP and WP drives the liquid crystal layer in accordance with the potential difference between the data voltage supplied to the pixel electrode PE and the common voltage supplied to the common electrode, Adjust the amount of permeation.

Each of the sub pixels RP, GP, BP and WP has an opening OP of a parallelogram shape. Further, a pair of parallel sides of the openings OP of the sub pixels RP, GP, BP, WP may be inclined at a first angle? 1 with respect to either side of the sub pixel have. 11 to 13, the first angle? 1 is not 45 degrees. 11 to 13, the first angle [theta] 1 may be 45 [alpha] alpha, and [alpha] may be a real number greater than 0 and less than or equal to 45. [

In this case, the length (a) of the first boundary line BL1 overlapping any one of the openings OP of the sub-pixels RP, GP, BP, WP and the length The sum of the lengths b of the first boundary line BL1 can always be constant. For example, the length a of the first boundary line BL1 overlapping the opening OP of the red sub-pixel RP and the length a of the white sub-pixel WP adjacent to the opening OP of the red sub- The sum of the lengths b of the first boundary line BL1 overlapping the opening OP can always be constant.

The length c of the second boundary line BL2 overlapping any one of the openings OP of the sub pixels RP, GP, BP and WP and the length c of the second boundary line BL2 superimposed on the opening adjacent to any one of the sub- And the length d of the two boundary lines BL2 may always be constant. For example, the length c of the second boundary line BL2 overlapping the opening OP of the red sub-pixel RP and the length c of the green sub-pixel GP adjacent to the opening OP of the red sub- The sum of the length d of the second boundary line BL2 overlapping the opening OP can always be constant.

The remaining regions of the sub pixels RP, GP, BP, and WP excluding the openings OP are covered by the black matrix 14. 5, a red color filter 15a is provided in the opening OP of the red sub pixel RP, a green color filter 15b is provided in the opening OP of the green sub pixel GP, A blue color filter 15c is provided at the opening OP of the pixel BP.

It is preferable that the openings OP of each of the sub pixels RP, GP, BP, and WP are formed to be narrower than the pixel electrodes PE. When the opening OP of each of the sub pixels RP, GP, BP and WP is formed wider than the pixel electrode PE, there may arise a problem that the area to be covered like the transistor T is not covered.

As described above, in the embodiment of the present invention, each of the lenses L of the stereoscopic lens 20 is inclined at an angle of 45 degrees with respect to either side of the sub-pixels RP, GP, BP, And a pair of parallel sides of the openings OP in the parallelogram shape of the sub pixels RP, GP, BP and WP are formed as slanted lenses, And it is inclined at an angle of 45 ± α with respect to one side. As a result, in the embodiment of the present invention, since the pixel pitch can be made constant in vertical viewing as shown in FIG. 12 and horizontal viewing as shown in FIG. 13, it is possible to optimize the viewing The viewing distance D can be kept constant. That is, the embodiment of the present invention can view the stereoscopic image without changing the optimal viewing distance even when the user pivots.

The embodiment of the present invention is characterized in that the length a of the first boundary line BL1 overlapping any one of the openings OP of the sub pixels RP, GP, BP, The sum of the lengths b of the first boundary lines BL1 overlapping the adjacent openings is always kept constant and the sum of the lengths b of the overlapping portions of the openings OP of the sub pixels RP, The sum of the length c of the second boundary line BL2 and the length d of the second boundary line BL2 overlapping the opening adjacent to any one of the openings is always kept constant. As a result, even if the openings OP of the sub pixels RP, GP, BP, and WP are overlapped with respect to the first and second boundary lines BL1 and BL2, The area of the openings OP of the right eye region RU can be kept substantially equal to the area of the openings OP of the right eye region RU. Therefore, in the embodiment of the present invention, the luminance L of the left eye image refracted by the left eye area LU and the luminance L of the right eye image refracted by the right eye area RU are substantially equal to each other .

In other words, even if a deviation occurs in the manufacturing process, the embodiment of the present invention can reduce the length of the first boundary line BL1 overlapping any one of the openings OP of the sub-pixels RP, GP, BP, GP, BP, WP) and the length (b) of the first boundary line BL1 overlapping the opening adjacent to any one of the openings, If the sum of the length c of the second boundary line BL2 overlapping any one of the openings and the length d of the second boundary line BL2 overlapping the opening adjacent to any one of the openings is always constant, The luminance L of the left eye image refracted by the left eye area LU and the luminance L of the right eye image refracted by the right eye area RU can be maintained substantially equal to each other as shown in FIG. Therefore, the embodiment of the present invention can solve the problem that the user feels a luminance difference between the eyes due to variations in the manufacturing process.

14 is an exemplary view showing transistors, pixel electrodes, and openings of sub-pixels when the pixel has a rectangular shape. FIG. 15 is an exemplary view showing the pixels of FIG. 14 and the lenses of a stereoscopic lens when viewed in portrait; 16 is an exemplary view showing a lens of a pixel and a stereoscopic lens of FIG. 14 in a landscape view.

The lenses L, the first and second boundary lines BL1 and BL2 of the stereoscopic lens 20 shown in Figs. 14 to 16 are substantially the same as those described with reference to Figs. 6 to 8. Fig. Therefore, detailed descriptions of the lenses L, the first and second boundary lines BL1 and BL2 of the stereoscopic lens 20 shown in Figs. 14 to 16 are omitted.

14 to 16, each of the pixels P has a rectangular shape and includes four sub-pixels. At this time, each of the four sub-pixels may have a rectangular shape, and two adjacent sub-pixels may have a square shape. 14 to 16 illustrate that the four sub-pixels are the red sub-pixel RP, the green sub-pixel GP, the blue sub-pixel BP, and the white sub-pixel WP, shall. 14 to 16, sub-pixels connected to the k-th gate line Gk and the j-th data line Dj are referred to as a red sub-pixel RP, a k-th gate line Gk, and a The sub-pixel connected to the first sub-pixel Dj is referred to as a green sub-pixel GP, the sub-pixel connected to the (k + 1) -th gate line Gk + 1 and the j-th data line Dj is referred to as a white sub- Pixels connected to the (j + 1) th gate line Gk + 1 and the (j + 1) th data line Dj are blue subpixels BP. However, the present invention is not limited thereto.

The transistor T of each of the sub pixels RP, GP, BP, and WP is turned on by the gate signal of the gate line to supply the data voltage of the data line to the pixel electrode PE. Each of the sub pixels RP, GP, BP and WP drives the liquid crystal layer in accordance with the potential difference between the data voltage supplied to the pixel electrode PE and the common voltage supplied to the common electrode, Adjust the amount of permeation.

Each of the sub pixels RP, GP, BP and WP has an opening OP of a parallelogram shape. In addition, a pair of parallel sides of the openings OP of the sub pixels RP, GP, BP, WP may be inclined at a first angle relative to either side of the sub pixel. 14 to 16, the first angle is 45 degrees. In this case, each of the lenses L of the stereoscopic lens 20 is also a slanted lens slanted at an angle of 45 degrees with respect to either side of each of the sub-pixels RP, GP, BP, A pair of parallel sides of the openings OP of the sub pixels RP, GP, BP, and WP can coincide with the first and second boundary lines BL1 and BL2. That is, any one of the pair of parallel sides of the opening OP of the sub-pixels may coincide with the first boundary line BL1, and the other of the pair of parallel sides may coincide with the second boundary line BL2.

The remaining regions of the sub pixels RP, GP, BP, and WP excluding the openings OP are covered by the black matrix 14. 5, a red color filter 15a is provided in the opening OP of the red sub pixel RP, a green color filter 15b is provided in the opening OP of the green sub pixel GP, A blue color filter 15c is provided at the opening OP of the pixel BP.

It is preferable that the openings OP of each of the sub pixels RP, GP, BP, and WP are formed to be narrower than the pixel electrodes PE. When the opening OP of each of the sub pixels RP, GP, BP and WP is formed wider than the pixel electrode PE, there may arise a problem that the area to be covered like the transistor T is not covered.

As described above, in the embodiment of the present invention, each of the lenses L of the stereoscopic lens 20 is inclined at an angle of 45 degrees with respect to either side of the sub-pixels RP, GP, BP, And a pair of parallel sides of the openings OP in the parallelogram shape of the sub pixels RP, GP, BP and WP are formed as slanted lenses, And is inclined at an angle of 45 degrees relative to one side. As a result, in the embodiment of the present invention, since the pixel pitch can be made constant in vertical viewing as in FIG. 15 and horizontal viewing as in FIG. 16, the optimum The viewing distance D can be kept constant. That is, the embodiment of the present invention can view the stereoscopic image without changing the optimal viewing distance even when the user pivots.

On the other hand, in the embodiment of the present invention described with reference to Figs. 14 to 16, as described in conjunction with Figs. 9A, 9B and 10A to 10C due to variations in the manufacturing process, May occur. The embodiment of the present invention shows another embodiment in which the above problems can be solved in connection with FIG. 17 to FIG.

17 is another exemplary view showing transistors, pixel electrodes, and openings of sub-pixels when the pixel has a rectangular shape. FIG. 18 is an exemplary view showing the pixels of FIG. 17 and the lenses of a stereoscopic lens when viewed vertically. FIG. 19 is an exemplary view showing a lens of a pixel and a stereoscopic lens in FIG. 17 in a landscape view. FIG. In FIGS. 17 to 19, for convenience of explanation, the sub-gate connected to the k-th and (k + 1) -th gate lines Gk and Gk + 1 and the j- and j + 1-th data lines Dj and Dj + The transistors T, the pixel electrodes PE, and the openings OP of the pixels RP, GP, BP and WP are illustrated.

The lenses L, the first and second boundary lines BL1 and BL2 of the stereoscopic lens 20 shown in Figs. 17 to 19 are substantially the same as those described with reference to Figs. 6 to 8. Fig. Therefore, detailed descriptions of the lenses L, the first and second boundary lines BL1 and BL2 of the stereoscopic lens 20 shown in Figs. 17 to 19 are omitted.

17 to 19, each of the pixels P has a rectangular shape and includes four sub-pixels. At this time, each of the four sub-pixels may have a rectangular shape, and two adjacent sub-pixels may have a square shape. 17 to 19 illustrate that the four sub-pixels are the red sub-pixel RP, the green sub-pixel GP, the blue sub-pixel BP, and the white sub-pixel WP, shall. 17 to 19, sub-pixels connected to the k-th gate line Gk and the j-th data line Dj are referred to as a red sub-pixel RP, a k-th gate line Gk, and a The sub-pixel connected to the first sub-pixel Dj is referred to as a green sub-pixel GP, the sub-pixel connected to the (k + 1) -th gate line Gk + 1 and the j-th data line Dj is referred to as a white sub- Pixels connected to the (j + 1) th gate line Gk + 1 and the (j + 1) th data line Dj are blue subpixels BP. However, the present invention is not limited thereto.

The transistor T of each of the sub pixels RP, GP, BP, and WP is turned on by the gate signal of the gate line to supply the data voltage of the data line to the pixel electrode PE. Each of the sub pixels RP, GP, BP and WP drives the liquid crystal layer in accordance with the potential difference between the data voltage supplied to the pixel electrode PE and the common voltage supplied to the common electrode, Adjust the amount of permeation.

Each of the sub pixels RP, GP, BP and WP has an opening OP of a parallelogram shape. In addition, a pair of parallel sides of the openings OP of the sub pixels RP, GP, BP, WP may be inclined at a first angle relative to either side of the sub pixel. In Figs. 17 to 19, the first angle is 0 degrees.

In this case, the length (a) of the first boundary line BL1 overlapping any one of the openings OP of the sub-pixels RP, GP, BP, WP and the length The sum of the lengths b of the first boundary line BL1 can always be constant. For example, the length a of the first boundary line BL1 overlapping the opening OP of the red sub-pixel RP and the length a of the white sub-pixel WP adjacent to the opening OP of the red sub- The sum of the lengths b of the first boundary line BL1 overlapping the opening OP can always be constant.

The length c of the second boundary line BL2 overlapping any one of the openings OP of the sub pixels RP, GP, BP and WP and the length c of the second boundary line BL2 superimposed on the opening adjacent to any one of the sub- And the length d of the two boundary lines BL2 may always be constant. For example, the length c of the second boundary line BL2 overlapping the opening OP of the red sub-pixel RP and the length c of the green sub-pixel GP adjacent to the opening OP of the red sub- The sum of the length d of the second boundary line BL2 overlapping the opening OP can always be constant.

The remaining regions of the sub pixels RP, GP, BP, and WP excluding the openings OP are covered by the black matrix 14. 5, a red color filter 15a is provided in the opening OP of the red sub pixel RP, a green color filter 15b is provided in the opening OP of the green sub pixel GP, A blue color filter 15c is provided at the opening OP of the pixel BP.

It is preferable that the openings OP of each of the sub pixels RP, GP, BP, and WP are formed to be narrower than the pixel electrodes PE. When the opening OP of each of the sub pixels RP, GP, BP and WP is formed wider than the pixel electrode PE, there may arise a problem that the area to be covered like the transistor T is not covered.

As described above, in the embodiment of the present invention, each of the lenses L of the stereoscopic lens 20 is inclined at an angle of 45 degrees with respect to either side of the sub-pixels RP, GP, BP, And a pair of parallel sides of the openings OP in the parallelogram shape of the sub pixels RP, GP, BP and WP are formed as slanted lenses, And it is inclined at an angle of 45 ± α with respect to one side. As a result, in the embodiment of the present invention, since the pixel pitch can be made constant in vertical viewing as shown in Fig. 18 and horizontal viewing as shown in Fig. 19, it is possible to optimize viewing of a stereoscopic image optimally The viewing distance D can be kept constant. That is, the embodiment of the present invention can view the stereoscopic image without changing the optimal viewing distance even when the user pivots.

The embodiment of the present invention is characterized in that the length a of the first boundary line BL1 overlapping any one of the openings OP of the sub pixels RP, GP, BP, The sum of the lengths b of the first boundary lines BL1 overlapping the adjacent openings is always kept constant and the sum of the lengths b of the overlapping portions of the openings OP of the sub pixels RP, The sum of the length c of the second boundary line BL2 and the length d of the second boundary line BL2 overlapping the opening adjacent to any one of the openings is always kept constant. As a result, even if the openings OP of the sub pixels RP, GP, BP, and WP are overlapped with respect to the first and second boundary lines BL1 and BL2, The area of the openings OP of the right eye region RU can be kept substantially equal to the area of the openings OP of the right eye region RU. Therefore, in the embodiment of the present invention, the luminance L of the left eye image refracted by the left eye area LU and the luminance L of the right eye image refracted by the right eye area RU are substantially equal to each other .

In other words, even if a deviation occurs in the manufacturing process, the embodiment of the present invention can reduce the length of the first boundary line BL1 overlapping any one of the openings OP of the sub-pixels RP, GP, BP, GP, BP, WP) and the length (b) of the first boundary line BL1 overlapping the opening adjacent to any one of the openings, If the sum of the length c of the second boundary line BL2 overlapping any one of the openings and the length d of the second boundary line BL2 overlapping the opening adjacent to any one of the openings is always constant, The luminance L of the left eye image refracted by the left eye area LU and the luminance L of the right eye image refracted by the right eye area RU can be maintained substantially equal to each other as shown in FIG. Therefore, the embodiment of the present invention can solve the problem that the user feels a luminance difference between the eyes due to variations in the manufacturing process.

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 technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

10: display panel 11, PE: pixel electrode
12: common electrode 13: liquid crystal cell
20: stereoscopic lens BS: base substrate
L: Lens LU: Left eye area
OLA: overlap region GA: gap region
RU: right eye region 30: gate driver
40: Data driver 50: Timing controller
15: Color filter 15a: Red color filter
15b: green color filter 15c: blue color filter
110: lower substrate 120: upper substrate
RP: red sub-pixel GP: green sub-pixel
BP: blue sub-pixel WP: white sub-pixel
OP: opening

Claims (9)

A display panel having pixels including sub-pixels having openings in the form of a parallelogram; And
And a stereoscopic lens disposed on the display panel and including a plurality of lenses inclined at 45 degrees to either side of the pixel,
Wherein a pair of parallel sides of the openings are inclined at a first angle relative to either side of the pixel. The method according to claim 1,
Wherein the first angle is 45 degrees. 3. The method of claim 2,
Each of the lenses includes a left eye area arranged on sub pixels displaying a left eye image and a right eye area arranged on sub pixels displaying a right eye image,
Wherein the pair of parallel sides coincide with a first boundary line that is a boundary line between the lenses and a second boundary line that is a boundary line between the left eye region and the right eye region of each of the lenses. The method according to claim 1,
The first angle is 45 + alpha degrees,
and? is a real number greater than 0 and not greater than 45. 5. The method of claim 4,
Each of the lenses includes a left eye area arranged on sub pixels displaying a left eye image and a right eye area arranged on sub pixels displaying a right eye image,
Wherein a boundary line between the lenses is defined as a first boundary line, and a boundary between a left eye region and a right eye region of each of the lenses is defined as a second boundary line. 6. The method of claim 5,
Wherein the sum of the length of the first boundary line overlapping one of the openings and the length of the first boundary line overlapping the opening adjacent to the one of the openings is constant. 6. The method of claim 5,
Wherein a sum of a length of the second boundary line overlapping one of the openings and a length of the second boundary line overlapping the opening adjacent to the one of the openings is constant. The method according to claim 1,
Wherein each of the sub-pixels has a square shape, and each of the pixels has a square shape. The method according to claim 1,
Wherein each of the sub-pixels has a rectangular shape, and two sub-pixels adjacent to each other have a square shape, and each of the pixels has a rectangular shape.

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