JP2010237372A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device capable of preventing deterioration in image quality due to crosstalk, even when a visual point is moved up and down. <P>SOLUTION: The display device has a display panel having a plurality of pixels and a parallax barrier stuck on a display surface of the display panel, wherein the parallax barrier has a plurality of openings, a light shield film is disposed at a border part between mutually adjacent pixels, and at least one of a periphery of the opening and a periphery of the light shield film is inclined in a Y direction of the display screen. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display device, and more particularly to a display device capable of displaying different images depending on the viewpoint of an observer.

  A slit that controls the traveling direction of light, called a parallax barrier (parallax barrier), is formed on the viewer side of the display device, and different images corresponding to the traveling direction of the light are displayed to correspond to the viewpoint position. A multi-screen display device (multi-view display) that enables simultaneous display of different images is known (see Patent Document 1). As such a display device, a two-screen display device (dual view liquid crystal display) and a three-screen display device (triple view liquid crystal display) are generally known.

  In such a multi-screen display device, since a different image corresponding to each viewpoint position is displayed on one display device, an image from another viewpoint position is included in an image from a certain viewpoint position of the observer. There may be a problem that the image is reflected, that is, a plurality of images are overlapped and recognized by the observer. Such overlapping of a plurality of images is referred to as crosstalk. As a technique for reducing the crosstalk, there is a technique described in Patent Document 2. The technique described in Patent Document 2 is configured to reduce crosstalk by adding correction data that cancels out the generated crosstalk component to the original image data.

  Further, in Patent Document 3, as another cause of deterioration in display quality, a thin film transistor or a charge holding capacitor (holding capacitor) pattern for controlling pixel values to pixels arranged in a matrix on a liquid crystal panel serving as a display device. A technique for reducing crosstalk associated with diffraction due to diffraction is disclosed.

JP 2005-78080 A Special table 2008-527440 gazette JP 2005-172848 A

  For example, as described in Patent Document 2, even if correction data that cancels out crosstalk components generated at a viewing angle corresponding to a certain viewpoint position is corrected in addition to the original image data, The inventors of the present invention have found that the phenomenon described in the following exists.

  That is a phenomenon in which crosstalk may appear when the observer moves the viewpoint up and down from a predetermined viewpoint position. Moving the viewpoint up and down from a predetermined viewpoint position means that the viewing angle with respect to the vertical direction (Y direction) of the display surface is changed without changing the viewing angle with respect to the horizontal direction (X direction) of the display surface. That's what it means.

  That is, the conventional multi-screen display device moves the viewpoint up and down (changes the viewing angle with respect to the vertical direction of the display surface) from a predetermined viewpoint position (without changing the viewing angle with respect to the horizontal direction of the display surface). There is a problem that image quality is deteriorated due to crosstalk.

  However, Patent Document 1 is only a description relating to a problem that an image (crosstalk) in which two images are combined can be recognized when an observer is positioned at a position other than a preset viewpoint position. There is no disclosure or suggestion of crosstalk when the viewpoint is moved up or down.

  Neither Patent Document 2 nor Patent Document 3 discloses or suggests crosstalk when the observer's viewpoint is moved up and down.

  The present invention has been made in view of the above problems, and an object of the present invention is to prevent deterioration in image quality due to crosstalk even when the viewpoint is moved in the vertical direction (that is, the vertical direction of the display surface). It is an object of the present invention to provide a display device that can be used.

  The outline of solving the above problems is as follows.

  A display device having a display panel having a plurality of pixels arranged in a matrix, and a parallax barrier bonded to a display surface of the display panel, the parallax barrier having a plurality of openings, The display panel includes a light-shielding film, and the opening portion is opposed to a part of one pixel among the plurality of pixels and a part of the pixel adjacent to the one pixel in a first direction. Oppositely, the light shielding film is disposed at a boundary portion between the one pixel and the adjacent pixel, and a peripheral portion of the opening extends in a direction intersecting the first direction. The light-shielding film has a second peripheral edge extending in a direction intersecting the first direction, and the first peripheral edge and the second peripheral edge At least one of them has an inclination with respect to the second direction orthogonal to the first direction. The features.

  According to the present invention, even when the viewpoint is moved in the vertical direction (that is, the vertical direction of the display surface), it is possible to prevent the image quality from being deteriorated due to crosstalk.

It is a top view for demonstrating schematic structure of the display apparatus of Embodiment 1 of this invention. It is a top view for demonstrating schematic structure of the pixel in the display apparatus of Embodiment 1 of this invention. It is a top view for demonstrating schematic structure of the display apparatus of Embodiment 1 of this invention. FIG. 4 is a cross-sectional view taken along line C-C ′ shown in FIG. 3. It is a figure for demonstrating the principle of the image correction applied to Embodiment 2 of this invention. It is a top view for demonstrating schematic structure of the display apparatus of Embodiment 3 of this invention. It is a top view for demonstrating schematic structure of the display apparatus of Embodiment 4 of this invention. It is a top view for demonstrating schematic structure of the display apparatus of Embodiment 5 of this invention. It is a figure for demonstrating schematic structure of the display apparatus of Embodiment 6 of this invention. It is a figure for demonstrating the schematic structure different from FIG. 9 of the display apparatus of Embodiment 6 of this invention. It is a figure for demonstrating schematic structure of the display apparatus of Embodiment 7 of this invention. It is a figure for demonstrating the schematic structure different from FIG. 11 of the display apparatus of Embodiment 7 of this invention.

  Hereinafter, an example of an embodiment to which the present invention is applied will be described with reference to the drawings. However, in the following description, the same components are denoted by the same reference numerals, and repeated description is omitted.

<Embodiment 1>
<overall structure>
FIG. 1 is a plan view for explaining a schematic configuration of a display device according to Embodiment 1 of the present invention. In the figure, X and Y indicate the X direction and the Y direction, respectively. In the first embodiment, the case where the present invention is applied to a liquid crystal display device will be described. However, the present invention is not limited to this and can be applied to other display devices such as an organic EL display device.

  As shown in FIG. 1, the display device of Embodiment 1 includes a first substrate (TFT substrate) SUB1 on which pixel electrodes and the like are formed, a color filter, a black matrix (light-shielding film), and a visual field barrier. A liquid crystal display panel comprising a second substrate (color filter substrate) SUB2 disposed opposite to SUB1 and a liquid crystal (liquid crystal layer) (not shown) sandwiched between the first substrate SUB1 and the second substrate SUB2. The liquid crystal display device is configured by combining the liquid crystal display panel and a backlight unit (not shown) serving as a light source. The first substrate SUB1 and the second substrate SUB2 are fixed (fixed) and the liquid crystal sandwiched between the two substrates SUB1 and SUB2 is fixed by a sealing material SL formed around the display area AR. Is also configured to be sealed. In the following description, the liquid crystal display panel is also referred to as a liquid crystal display device. Details of the visual field barrier will be described later.

  As the first substrate SUB1 and the second substrate SUB2, well-known glass substrates are used. A first substrate SUB1 and a second substrate SUB2 are formed with this glass substrate to constitute a liquid crystal display device. The first substrate SUB1 and the second substrate SUB2 are not limited to glass substrates, but may be transparent plastic (resin) substrates, and may be other insulating substrates such as quartz glass. For example, if quartz glass is used, the process temperature can be increased and the gate insulating film can be densified, so that the reliability of the thin film transistor TFT described later can be improved. If a plastic (resin) substrate is used, a liquid crystal display device that is lightweight and excellent in impact resistance can be provided.

  In the display device according to the first embodiment, a region in which display pixels (hereinafter abbreviated as pixels) are formed in the region in which liquid crystal is sealed is the display region AR. Even in a region where liquid crystal is sealed, a region where pixels are not formed and is not involved in display is not the display region AR.

  Furthermore, in the display device according to the first embodiment, a polysilicon TFT is used as the thin film transistor TFT, and the scanning signal driving circuit (gate driver) GDR and the video signal driving circuit (drain driver) DDR are formed on the first substrate SUB1. It is the composition which becomes. A control signal for image display is input to the gate driver GDR and the drain driver DDR via a flexible wiring substrate (not shown) connected to the electrode terminal portion TRM. At this time, the display device according to the first embodiment is configured such that corrected image data after crosstalk reduction measures are input to the drain driver DDR. Details of the crosstalk reduction measures will be described later. Alternatively, the gate driver GDR and the drain driver DDR may be mounted on the flexible wiring board as an IC chip, for example, and a drain signal or a gate signal may be input via the electrode terminal portion TRM. In the following description, the drain driver DDR and the gate driver GDR are simply abbreviated as a drive circuit (driver) when it is not necessary to distinguish between them.

  As shown in FIG. 1, in the liquid crystal display device according to the first embodiment, scanning is performed on the liquid crystal side surface of the first substrate SUB1 and in the display area AR, extending in the X direction in FIG. A signal line (gate line) GL is formed. In addition, video signal lines (drain lines) DL extending in the Y direction and juxtaposed in the X direction are formed.

  A region surrounded by the drain line DL and the gate line GL constitutes a region in which pixels are formed, whereby each pixel is arranged in a matrix in the display region AR. Each pixel includes, for example, a thin film transistor TFT that is turned on by a scanning signal from the gate line GL and a drain line DL through the turned on thin film transistor TFT, as shown in an enlarged view A ′ of a circle A in FIG. The pixel electrode PX to which the video signal is supplied and the common electrode CT connected to the common line CL and supplied with a reference signal having a reference potential with respect to the potential of the video signal. An electric field having a component parallel to the surface of the first substrate SUB1 is generated between the pixel electrode PX and the common electrode CT, and liquid crystal molecules are driven by this electric field. Such a liquid crystal display device is known to be capable of so-called wide viewing angle display, and is called an IPS system or a lateral electric field system because of the peculiarity of application of an electric field to liquid crystal.

  In the configuration of the common electrode CT shown in the enlarged view A ′, the reference signal is input to the common electrode CT formed independently for each pixel through the common line CL. However, the configuration is limited to this. There is no. For example, the common electrode CT may be formed in a planar shape across a plurality of pixels.

  In addition, each drain line DL and each gate line GL extend beyond the sealing material SL at their ends, the gate line GL is connected to the gate driver GDR, and the drain line DL is connected to the drain driver DDR. It has become.

<Pixel configuration>
FIG. 2 is a plan view for explaining a schematic configuration of a pixel in the display device according to the first embodiment of the present invention. In addition, since the electrodes and signal lines shown below can be formed by a known photolithography technique, a detailed description of the forming method is omitted. For the sake of simplicity, the alignment film, the polarizing plate, and the like are omitted.

  As shown in FIG. 2, the gate line GL and the drain line DL are formed in parallel with a relatively large distance on the liquid crystal side surface of the first substrate SUB1. In particular, in the liquid crystal display device according to the first embodiment, the multi-domain configuration in which the pixel electrode PX is formed in a “<” shape makes the change in color tone depending on the angle of view by shifting the reference angle of the rotation axis of the liquid crystal molecules. It is the structure to reduce to. Further, in order to improve the aperture ratio, the drain line DL has a “<” shape as well as the pixel electrode PX. As described above, in each pixel region of the first embodiment, the pixel region is divided into, for example, the upper and lower parts in the figure, and one of the regions extends in a direction having a positive inclination with respect to the traveling direction of the gate line GL, for example. The other region is formed so as to extend in a direction having a negative inclination angle.

  A common electrode CT made of a transparent conductive material such as ITO (Indium-Tin-Oxide) is formed in a region between the gate line GL and the drain line DL. The common electrode CT is formed so as to overlap the common line CL at a side portion on the common line CL side, and is electrically connected to the common line CL via a through hole (contact hole) TH2. The common electrode CT shown in FIG. 2 is formed in a planar shape, but may have a structure in which an opening is provided in a region overlapping with a “<” shape of the pixel electrode PX. Further, a structure may be used in which a portion extending in a “<” shape is formed as in the pixel electrode PX.

  In addition, although the case where ITO is used as a transparent conductive film is demonstrated, it is not limited to ITO, You may use a well-known ZnO (zinc oxide) type | system | group transparent conductive film.

  The drain line DL formed by extending in the vertical direction in FIG. 2 in a “<” shape has an extended portion extending to the thin film transistor TFT side, and is connected to the drain electrode of the thin film transistor TFT. Has been. In addition, the source electrode of the thin film transistor TFT formed simultaneously with the formation of the drain line DL and the drain electrode is formed so as to face the drain electrode and have an extension portion slightly extended to the pixel region side. ing. A through hole (contact hole) TH1 connected to the pixel electrode PX is formed in the extending portion, and the pixel electrode PX and the source electrode formed in an upper layer of an insulating film (not shown) are electrically connected. It has a configuration. A part of the gate line GL formed to extend in the left-right direction in FIG. 2 also has an extending portion on the thin film transistor TFT side, and the extending portion serves as a gate electrode of the thin film transistor TFT. Note that the drain line DL is configured to intersect with the gate line GL through an insulating film (not shown) in a region near the thin film transistor TFT.

  As described above, the region of the pixel in the liquid crystal display device according to the first embodiment is a region surrounded by the gate line GL and the drain line DL formed on the first substrate SUB1. In addition, one of the B (blue), G (green), and R (red) color filters formed on the second substrate SUB2 to be described later is paired with the above-described pixel region to form one pixel (sub-pixel). Also referred to as a pixel). The B, G, and R pixels are used as a set to perform color image display.

  The thin film transistor TFT of Embodiment 1 is a transistor having a MIS (Metal Insulator Semiconductor) structure. Note that the transistor having the MIS structure is driven so that the drain electrode and the source electrode are switched by application of the bias. However, in the description of this specification, for convenience, the side connected to the drain line DL is defined as the drain electrode, The side connected to the pixel electrode PX is called a source electrode.

<Parallax barrier configuration>
FIG. 3 is a plan view for explaining a schematic configuration of the display device according to the first embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line CC ′ shown in FIG.

  Hereinafter, the configuration of the parallax barrier in the display device according to the first embodiment will be described with reference to FIGS. 3 and 4. FIG. 3 shows a configuration in which a parallax barrier PB is formed on the surface of the second substrate SUB2 opposite to the liquid crystal LC. The hatched portion in FIG. 3 indicated by hatching or vertical lines indicates a pixel region that can be seen from the opening OP of the visual field barrier PB, the hatched portion by dots indicates the light shielding region SA of the parallax barrier PB, and the portion indicated by dotted lines indicates the pixel. The part which overlaps with the light-shielding area SA is shown.

  Hereinafter, the configuration of the parallax barrier in the display device according to the first embodiment will be described with reference to FIGS. 3 and 4. As shown in FIGS. 3 and 4, the display device according to the first embodiment includes a first substrate SUB <b> 1 and a second substrate SUB <b> 2 that face each other with a liquid crystal LC interposed therebetween. On the liquid crystal surface side of the first substrate SUB1, a semiconductor layer TR composed of the above-described thin film transistor TFT, signal line and the like is formed. Further, a color filter CF is formed on the liquid crystal surface side of the second substrate SUB2, and each of the blue (B), green (G), and red (R) color filters is separately formed by the black matrix BM. ing. Each color filter (indicated by B, G, R) formed on the second substrate SUB2 has a configuration corresponding to one pixel formed on the first substrate SUB1, as described above.

  Since each of the B, G, and R pixels configured in this manner has a multi-domain configuration as described above, the outer shape of each pixel is a “<” shape. That is, the outer shape of each pixel is formed in a straight line with respect to the extending direction of the gate line. On the other hand, it is formed in a “<” shape with respect to the extending direction of the drain line. The external shape of each pixel has such a shape, as described above, each pixel region is formed of two regions, the upper side and the lower side in the figure, and the extending direction of the pixel electrode or the like in each region This is because the extending direction of the drain line is different from the extending direction of the drain line. Therefore, the shape of the black matrix BM formed between the pixels also has a “<” shape. Each pixel region is not limited to the two regions of the upper side and the lower side, and may be formed of three or more regions.

  On the other hand, on the surface of the second substrate SUB2 opposite to the liquid crystal LC, a parallax barrier PB in which a slit-like opening OP is formed in the light shielding area SA is arranged. In particular, the display device according to the first embodiment is configured to enable two-screen display in the arrow P1 direction and the arrow P2 direction shown in FIG. That is, the display device according to the first embodiment has a configuration in which the opening OP is formed so as to overlap with the black matrix BM formed between adjacent color filters. With such a configuration, even in the case of light emitted from the same opening OP, an observer at one viewpoint position (an observer located on the right side in FIG. 4) has a direction indicated by an arrow P1. Light from the pixel (for example, light from the blue pixel (B1)) is observed, and an observer at the other viewpoint position (an observer located on the left side in FIG. 4) is from the pixel in the direction indicated by the arrow P2. Light (for example, light from the green pixel (G1)) is observed, and two-screen display is possible. Note that the scope of application of the present invention is not limited to two-screen display, and can be applied to a three-screen display device. In this case, the opening OP is formed so as to be superimposed on the pixel, and the screen display by the superimposed pixel (image display in the front direction) and the two-screen display by two pixels adjacent to the pixel (image display in the left-right direction) ) And a total of three screens.

  In particular, in the display device according to the first embodiment, as illustrated in FIG. 3, the shape of the opening OP of the parallax barrier BP according to the first embodiment is also formed in a “<” shape. That is, also in the opening OP, the opening region is formed of two regions, the upper side in the drawing and the lower side in the drawing, and the extending direction of the opening in each region is different. It is formed so as to open continuously at an angle. In addition, each opening area | region is not limited to two area | regions of the upper part side and the lower part side, You may form from three or more area | regions.

  Furthermore, in the display device according to the first embodiment, as is apparent from FIG. 4, the width of the black matrix BM separating the color filters of the adjacent BGR is larger than the width in the X direction (extending direction of the gate line GL). The opening OP has a larger opening width. That is, the plane connecting the peripheral portion of the black matrix BM of the color filter CF formed through the second substrate SUB2 and the peripheral portion of the opening OP of the parallax barrier PB does not coincide with the perpendicular direction in FIG. In the normal direction).

<Principle and effect of invention>
The light emitted from the backlight, which is the light source of the display device of Embodiment 1, is highly diffusive and includes a light flux component that travels in all directions. In addition, it is considered that light from a specific direction among the light flux components greatly contributes to the light that generates crosstalk.

  The inventor of the present invention has found that the distance between the parallax barrier BP and the black matrix BM becomes a minute slit and a light diffraction phenomenon occurs. Further, the inventor of the present invention, from a detailed observation, at a predetermined viewpoint position, among the light beams of the diffracted light due to the diffraction phenomenon, the light beam group having the strongest intensity is emitted in a specific direction. It was also found that when the viewpoint is moved up and down from a predetermined viewpoint position, the emission angle of the light flux group changes. This is considered to be the cause of crosstalk that appears when the observer moves the viewpoint up and down from a predetermined viewpoint position.

  Therefore, by dispersing and diffusing the specific direction (outgoing direction) of the diffracted light in the vertical direction, crosstalk that appears when the observer moves the viewpoint up and down from a predetermined viewpoint position can be reduced. .

  In the display device according to the first embodiment, as illustrated in FIG. 3, the shape of the opening OP of the parallax barrier BP and the shape of the black matrix BM are “<”. That is, the shape of the peripheral edge of the opening OP of the parallax barrier BP and the peripheral edge of the black matrix BM is inclined with respect to the extending direction of the drain line DL (Y direction in FIG. 1, vertical direction). . With the configuration having the above-described inclination, the emission direction of diffracted light that causes crosstalk can be dispersed in the vertical direction. Therefore, crosstalk that appears when the observer moves the viewpoint up and down from a predetermined viewpoint position can be reduced.

  Furthermore, in the display device of Embodiment 1, as shown in FIG. 4, the opening width (width in the X direction) of the opening OP of the parallax barrier PB is formed larger than the width in the X direction of the black matrix BM. Has been. That is, the plane connecting the peripheral edge of the black matrix BM and the peripheral edge of the opening OP of the parallax barrier PB does not coincide with the perpendicular direction in FIG.

  With the above configuration, the distance between the parallax barrier BP and the black matrix BM, that is, the direction of the minute slits that generate the diffraction phenomenon, is inclined. The amount of emitted light can be reduced. Therefore, crosstalk that appears when the observer moves the viewpoint up and down from a predetermined viewpoint position can be reduced.

  Furthermore, in the display device according to the first embodiment, as shown in FIG. 3, the “<” shape portion at the peripheral portion of the black matrix BM and the “<” shape portion at the peripheral portion of the opening OP of the parallax barrier BP. Are formed in parallel. With the above configuration, there is an effect that the aperture ratio is less decreased than in the case where they are not formed in parallel.

<Embodiment 2>
The configuration of the second embodiment is the same as the configuration described in the first embodiment, but corrects image data by adding correction data that cancels a crosstalk component generated at a viewing angle corresponding to a certain viewpoint position to the original image data. Crosstalk reduction measures (image correction) are added.

FIG. 5 is a diagram for explaining image correction applied to the second embodiment. In a two-screen display device in which the parallax barrier PB is formed on the display surface side of the display device, the light emitted through the opening OP formed in the parallax barrier PB varies depending on observation from the right direction or the left direction in the drawing. The image can be displayed. For this purpose, light from the blue pixel (B1) (indicated by solid arrow I ₀ (B1)), light from the red pixel (R1) (indicated by solid arrow I ₀ (R1)), A desired color is generated by the light from the green pixel (G2) (indicated by the solid line arrow I ₀ (G2)).

However, as shown in FIG. 5, after the light from the red pixel (R0) adjacent to the blue pixel (B1) (indicated by the dotted arrow I ₀ (R0)) is reflected on the back side of the parallax barrier, The light is reflected at the boundary surface of the second substrate SUB2 on the color filter CF side. Therefore, the light from the blue pixel (B1) (shown by the solid arrow I ₀ (B1)) and the reflected light from the red pixel (R0) (dotted arrow) from the opening OP on the left side of FIG. The light I (B1) synthesized with I ₀ (indicated by R ₀ ) is emitted. As a result, a phenomenon occurs in which the left observer image is displayed so as to overlap the right observer image. Similarly, light including reflected light from adjacent pixels is emitted from the light I (R1) and I (G2) emitted from the other openings OP.

  For this reason, in the display device according to the second embodiment, the influence of the reflection of the image data for the left observer is taken into consideration, and the influence of the reflection is subtracted from the image data for the right observer. It is configured to greatly reduce the phenomenon in which the image for the left observer is displayed so as to overlap the image for the right observer. Similarly, the phenomenon in which the image for the right observer is displayed so as to overlap the image for the left observer in FIG. 5 is also greatly reduced.

  Only the image correction can provide only a crosstalk reduction effect in the horizontal direction (X direction) of the display surface. However, in the display device of the second embodiment, the above-described image correction is added to the configuration described in the first embodiment. Therefore, either the horizontal direction (X direction) of the display surface or the vertical direction (Y direction) of the display surface. However, the crosstalk reduction effect can be obtained.

<Embodiment 3>
FIG. 6 is a plan view for explaining a schematic configuration of the display device according to the third embodiment of the present invention. However, as in the first embodiment described above, the left-right direction in FIG. 6 is the extending direction of the gate line GL, and the vertical direction in the figure indicates the display surface direction. Further, the display device of the third embodiment is different in the shape of the opening OP of the parallax barrier BP, that is, only the length from the peripheral edge of the black matrix BM to the peripheral edge of the opening OP, and the other configurations are the same as in the embodiment. 1 is the same configuration as the display device 1. Therefore, in the following description, only the configuration of the opening OP of the parallax barrier BP will be described in detail.

  As shown in FIG. 6, also in the display device of the second embodiment, B (blue), G (green), and R (red) pixels (sub-pixels) extend in the extending direction of gate lines and drain lines (not shown). It is the structure formed in a matrix form along. A black matrix is formed around each of the B, G, and R color filters CF. That is, as in the first embodiment, each color filter CF formed on the second substrate SUB2 is separated by a black matrix along each pixel shape. Therefore, the pixels arranged in the gate line direction are separated by a “<”-shaped black matrix.

  On the other hand, the formation position of the opening OP of the parallax barrier BP is the same as the opening OP of the first embodiment, in the middle row in the figure, between the R0 (red) pixel and the B1 (blue) pixel, G1 ( It is formed between a green pixel and a R1 (red) pixel, and between a B2 (blue) pixel and a G2 (green) pixel. The opening OP of the third embodiment has a peripheral shape that is rectangular (rectangular). As a result, in the case of the opening OP formed between the R0 (red) pixel and the B1 (blue) pixel in the display device of Embodiment 2, the vertical direction of the display surface, that is, the vertical direction of the paper surface in the drawing. When the pixel is viewed from the opening OP, the shape of the peripheral portion of the black matrix and the outer shape (shape of the peripheral portion) of the opening OP are different.

  As described above, the display device of the third embodiment also has a configuration in which the shape of the peripheral edge of the black matrix BM is inclined with respect to the changing direction of the viewpoint position, that is, the extending direction of the drain line. The same effect as the display device can be obtained.

  In the display device according to the third embodiment, the shape of the opening OP of the parallax barrier BP is different from the shape of the black matrix superimposed on the opening OP. Therefore, the black matrix BM and the parallax barrier BP have different shapes. The direction and distance of the gap (micro slit) from the opening OP can be changed according to the peripheral position of the opening OP. As a result, the angle of the display surface of the minute slit with respect to the vertical direction can be changed according to the position, and the occurrence of crosstalk due to diffracted light can be further dispersed in the vertical direction in the figure (the vertical direction of the viewpoint). And the effect of further reducing the amount of crosstalk in a specific direction can be obtained.

<Embodiment 4>
FIG. 7 is a plan view for explaining a schematic configuration of a display device according to Embodiment 4 of the present invention. However, as in the first embodiment described above, the left-right direction in FIG. 7 is the extending direction of the gate line GL, and the vertical direction in the figure indicates the observer, that is, the display surface direction. Further, the display device of the fourth embodiment is different in the shape of the opening OP of the parallax barrier BP, that is, only the length from the peripheral edge of the black matrix BM to the peripheral edge of the opening OP, and the other configurations are the same as in the embodiment. 1 is the same configuration as the display device 1. Therefore, in the following description, only the configuration of the opening OP of the parallax barrier BP will be described in detail.

  As shown in FIG. 7, also in the display device of the third embodiment, B (blue), G (green), and R (red) pixels (subpixels) extend in the extending direction of gate lines and drain lines (not shown). It is the structure formed in a matrix form along. A black matrix is formed around each of the B, G, and R color filters CF. That is, as in the first embodiment, the color filter CF formed on the second substrate SUB2 has a shape separated by a black matrix along each pixel shape. Therefore, the pixels arranged in the gate line direction are separated by a “<”-shaped black matrix.

  On the other hand, the formation position of the opening OP of the parallax barrier BP is the same as the opening OP of the first embodiment, in the middle row in the figure, between the R0 (red) pixel and the B1 (blue) pixel, G1 ( It is formed between a green pixel and a R1 (red) pixel, and between a B2 (blue) pixel and a G2 (green) pixel. In the opening OP of the fourth embodiment, the shape of the peripheral portion is formed in a “<” shape. In particular, in the fourth embodiment, a shape in which the peripheral edge of the black matrix and the peripheral edge of the opening OP are not parallel is formed with an inclination angle different from the inclination angle of the peripheral edge of the black matrix and the peripheral edge of the opening OP. Has been. As a result, in the case of the opening OP formed between the R0 (red) pixel and the B1 (blue) pixel in the display device of the fourth embodiment, the vertical direction of the display surface, that is, the vertical direction of the paper surface in the drawing. When the pixel is viewed from the opening OP, the shape of the peripheral portion of the black matrix and the outer shape (shape of the peripheral portion) of the opening OP are different.

  As described above, in the display device according to the fourth embodiment, similarly to the display device according to the first embodiment, the peripheral edge of the black matrix BM and the opening of the parallax barrier BP with respect to the changing direction of the viewpoint position, that is, the extending direction of the drain line. Since the shape of the periphery of the part OP is inclined, the same effect as the display device of the first embodiment can be obtained.

Furthermore, in the display device according to the fourth embodiment, since the peripheral edge of the black matrix BM and the peripheral edge of the opening OP are not parallel to each other, similar to the display device according to the third embodiment, The angle with respect to the vertical direction can be changed according to the position of the peripheral edge of the black matrix BM, and the occurrence of crosstalk due to diffracted light can be further dispersed in the vertical direction in the figure (the vertical direction of the viewpoint). The effect that the amount of crosstalk light in a specific direction can be further reduced can be obtained. <Embodiment 5>
FIG. 8 is a plan view for explaining a schematic configuration of a display device according to Embodiment 4 of the present invention. However, as in the first embodiment described above, the left-right direction in FIG. 8 is the extending direction of the gate line GL, and the vertical direction in the figure indicates the observer, that is, the display surface direction. Further, the display device of the fifth embodiment is different in the shape of the opening OP of the parallax barrier BP, that is, only the length from the peripheral edge of the black matrix BM to the peripheral edge of the opening OP, and the other configurations are the same as those of the embodiment. 1 is the same configuration as the display device 1. Therefore, in the following description, only the configuration of the opening OP of the parallax barrier BP will be described in detail.

  As shown in FIG. 8, in the display device of the fifth embodiment, B (blue), G (green), and R (red) pixels (sub-pixels) extend in the extending direction of gate lines and drain lines (not shown). It is the structure formed in a matrix form along. A black matrix is formed around each of the B, G, and R color filters CF. That is, as in the first embodiment, the color filter CF formed on the second substrate SUB2 has a shape separated by a black matrix along each pixel shape. Therefore, the pixels arranged in the gate line direction are separated by a “<”-shaped black matrix.

  On the other hand, the formation position of the opening OP of the parallax barrier BP is the same as the opening OP of the first embodiment, in the middle row in the figure, between the R0 (red) pixel and the B1 (blue) pixel, G1 ( It is formed between a green pixel and a R1 (red) pixel, and between a B2 (blue) pixel and a G2 (green) pixel. In the opening OP of the fifth embodiment, the shape of the peripheral portion is formed in a “<” shape. In particular, in Embodiment 5, the peripheral width of the black matrix is not parallel to the peripheral edge of the opening OP, and the opening width increases from the center in the vertical direction in the figure toward the upper end or lower end. In this configuration, the opening OP is formed.

  At this time, since the width of the black matrix, that is, the interval between the pixels is the same, the peripheral edge of the black matrix and the peripheral edge of the opening OP have different inclination angles. For example, in the case of the opening OP formed between the R0 (red) pixel and the B1 (blue) pixel in the display device according to the fourth embodiment, the vertical direction of the display surface, that is, the vertical direction of the drawing in the drawing. When the pixel is viewed through the opening OP, the shape of the peripheral portion of the black matrix is different from the outer shape (shape of the peripheral portion) of the opening OP. The opening width of the opening OP may be such that both end sides are smaller than the center in the vertical direction in the drawing.

  As described above, in the display device according to the fifth embodiment, similarly to the display device according to the first embodiment, the peripheral edge of the black matrix BM and the opening of the parallax barrier BP with respect to the changing direction of the viewpoint position, that is, the extending direction of the drain line. Since the shape of the periphery of the part OP is inclined, the same effect as the display device of the first embodiment can be obtained.

  Furthermore, in the display device according to the fifth embodiment, since the peripheral edge of the black matrix and the peripheral edge of the opening OP are not parallel to each other, the vertical display surface of the minute slit is the same as in the display device according to the third embodiment. The angle with respect to the direction can be changed according to the position of the peripheral edge of the black matrix BM, and the occurrence of crosstalk due to diffracted light can be further dispersed in the vertical direction (vertical direction of the viewpoint) in the figure. The effect that the amount of crosstalk light in the direction can be further reduced can be obtained.

<Embodiment 6>
In the display devices according to the first to fifth embodiments, the shape of the pixel is formed in a “<” shape with respect to the extending direction of the drain line. However, the present invention is not limited to this, and can be applied to a rectangular pixel. For example, as shown in FIGS. 9 and 10, the extending direction may be shifted so that the peripheral edge of the black matrix and the peripheral edge of the opening OP have different inclination angles. 9 and 10 also provides a crosstalk reduction effect as in the first embodiment.

<Embodiment 7>
In addition, the shape of the pixel and the shape of the opening OP of the parallax barrier BP are formed such that the extending direction of the drain line (the vertical direction of the display surface) is, for example, an arcuate curve as shown in FIGS. It is also possible to use a configuration. The black matrix BM may have a drain line extending direction (vertical direction of the display surface) formed by, for example, an arcuate curve.

  That is, the configuration of the seventh embodiment is characterized in that it has a shape and a curve in the extending direction (vertical direction of the display surface) of at least one drain line of the opening OP and the black matrix BM of the parallax barrier BP. is there. In the configuration of the seventh embodiment, the crosstalk reduction effect can be obtained as in the first embodiment.

  The configuration of image correction described in the second embodiment may be combined with the configuration of the third to seventh embodiments. Furthermore, in the display devices according to the first to seventh embodiments, each color filter CF formed on the second substrate SUB2 is separated by the black matrix BM. However, the present invention is not limited to this. For example, the present invention is also applicable when a signal line such as a drain line is used as the light shielding film.

  The present invention has been specifically described above based on the embodiment of the invention. However, the invention of the present application is not limited to the embodiment of the invention, and various modifications can be made without departing from the scope of the invention.

AR ... display area, SUB1 ... first substrate, SUB2 ... second substrate DL ... drain line, GL ... gate line, CL ... common line DT ... drain electrode, TFT ... Thin film transistor, PX ... Pixel electrode CT ... Common electrode, SL ... Sealing material, TRM ... Electrode region DDR ... Drain driver, GDR ... Drain driver PNL ... Liquid crystal display Panel, TH1, TH2 ... through hole,
SA ... light-shielding part, OP ... opening, BP ... parallax barrier CF ... color filter, LC ... liquid crystal, TR ... semiconductor layer BM ... black matrix, CMR ... Camera, LT ... light source

Claims (13)

A display device having a display panel having a plurality of pixels arranged in a matrix and a parallax barrier bonded to a display surface of the display panel,
The parallax barrier has a plurality of openings,
The display panel has a light shielding film,
The opening is opposed to a part of one pixel of the plurality of pixels and is opposed to a part of the pixel adjacent to the one pixel in a first direction;
The light shielding film is disposed at a boundary between the one pixel and the adjacent pixel,
The peripheral edge of the opening has a first peripheral edge extending in a direction intersecting the first direction,
The peripheral part of the light shielding film has a second peripheral part extending in a direction intersecting the first direction,
At least one of the first peripheral edge and the second peripheral edge has an inclination with respect to a second direction orthogonal to the first direction.   The display device according to claim 1, wherein the first peripheral edge and the second peripheral edge are formed in parallel.   The display device according to claim 2, wherein a surface connecting the first peripheral edge portion and the second peripheral edge portion is inclined with respect to a normal direction of a display surface of the display panel.   The at least one of said 1st peripheral part and said 2nd peripheral part is the shape of the shape of "<" which the direction of extension bends in the middle. The display device according to any one of the items.   The display device according to claim 1, wherein the shape of the opening is a rectangle, and the second peripheral edge is inclined with respect to the second direction. The first peripheral edge and the second peripheral edge are in the shape of a “<” that is bent halfway in the extending direction,
The display device according to claim 1, wherein the first peripheral edge portion and the second peripheral edge portion have different inclination angles with respect to the second direction.   The display device according to claim 1, wherein a width of the opening in the first direction varies depending on a position of the first peripheral edge.   The display device according to claim 1, wherein the pixel has a rectangular shape, and the first peripheral edge portion is inclined with respect to the second direction.   The display device according to claim 1, wherein at least one of the first peripheral portion and the second peripheral portion is a curved line.   10. The display device according to claim 1, wherein a width of the opening in a first direction is larger than a width of the second peripheral edge of the light shielding film.   The display device according to any one of claims 1 to 10, wherein the display panel is a liquid crystal display panel having a pair of substrates and a liquid crystal sandwiched between the pair of substrates. . One of the pair of substrates is bonded to the parallax barrier,
The display device according to claim 11, wherein the light shielding film is formed on the one substrate. Each of the plurality of pixels has a color filter,
The color filter is formed on the one substrate,
The display device according to claim 12, wherein at least the light shielding film is disposed at a boundary portion between the color filter included in the one pixel and the color filter included in the adjacent pixel.

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