JP2018072675A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress reflection of external light and to improve an opening ratio of a pixel in a liquid crystal display device constituted by overlapping a plurality of display panels.SOLUTION: A liquid crystal display device comprises: a first display panel for displaying a black-and-white image, which includes a first substrate, a second substrate, a first liquid crystal layer, a first black matrix, a plurality of first source lines and a plurality of first gate lines; and a second display panel for displaying a color image, which includes a third substrate, a fourth substrate disposed at a position farther from an observer, a second liquid crystal layer, a second black matrix, and a plurality of second source lines and a plurality of second gate lines formed on the third substrate. The first black matrix is formed to overlap the plurality of first source lines and the plurality of first gate lines in a plan view; and the second black matrix is formed into stripes extending in a second direction to overlap the plurality of second gate lines in a plane view.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a liquid crystal display device.

  In general, the liquid crystal display device prevents light (external light) incident from the outside on the observer side from being reflected by a metal wiring (source line, gate line) and the reflected light from being emitted to the observer side. Therefore, a black matrix made of a resin material having a low reflectance is provided. In order to suppress the reflection, it is necessary to make the width of the black matrix larger than at least the width of the metal wiring. However, when the width of the black matrix is increased, there arises a problem that the aperture ratio of the pixel is lowered. As described above, it is difficult to simultaneously realize the suppression of reflection by external light and the improvement of the aperture ratio of the pixel.

  Conventionally, as a technique for improving the contrast of a liquid crystal display device, a technique for superimposing two display panels and displaying an image on each display panel based on an input video signal has been proposed (for example, Patent Documents). 1). Specifically, for example, a color image is displayed on the front (observer side) display panel among the two display panels arranged at the front and back, and a monochrome image is displayed on the rear (backlight side) display panel. Thus, the contrast is improved.

WO2007 / 040127

  Even in a liquid crystal display device including two display panels, it is difficult to simultaneously realize the suppression of reflection by external light and the improvement of the aperture ratio of pixels, as in the case of a liquid crystal display device including a single display panel. is there.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress reflection by external light and improve the aperture ratio of a pixel in a liquid crystal display device configured by stacking a plurality of display panels. There is.

  In order to solve the above problems, a liquid crystal display device according to the present invention is a liquid crystal display device in which a plurality of display panels are arranged to overlap each other and display an image on each of the display panels, and displays a monochrome image. A first display panel; and a second display panel that is disposed at a position farther from the viewer than the first display panel and displays a color image. The first display panel includes a first substrate and the first display panel. A second substrate disposed farther from the viewer than the substrate; a first liquid crystal layer disposed between the first substrate and the second substrate; and a first black matrix formed on the first substrate. And a plurality of first source lines formed in the second substrate and extending in a first direction and a plurality of first gate lines extending in a second direction intersecting the first direction, The second display panel includes a third substrate and the second display panel. Formed on the third substrate, a fourth substrate disposed farther from the viewer than the substrate, a second liquid crystal layer disposed between the third substrate and the fourth substrate, a second black matrix, and the third substrate A plurality of second source lines extending in the first direction and a plurality of second gate lines extending in the second direction, and the first black matrix includes the plurality of the plurality of second source lines in a plan view. The second black matrix is formed to extend in the first direction and the second direction so as to overlap with the first source line and the plurality of first gate lines, and the second black matrix is seen in plan view. It extends in the second direction so as to overlap two gate lines, and is formed in a stripe shape.

  In order to solve the above problems, a liquid crystal display device according to the present invention is a liquid crystal display device in which a plurality of display panels are arranged to overlap each other, and displays an image on each of the display panels. A first display panel that is disposed farther from the viewer than the first display panel, and a second display panel that displays a color image. The first display panel includes a first substrate and the first display panel. A second substrate disposed farther from the observer than one substrate; a first liquid crystal layer disposed between the first substrate and the second substrate; and a first black formed on the first substrate. A matrix, and a plurality of first source lines extending in a first direction and a plurality of first gate lines extending in a second direction intersecting the first direction, formed on the second substrate, The second display panel includes a third substrate and a front A fourth substrate disposed farther from the observer than the third substrate; a second liquid crystal layer disposed between the third substrate and the fourth substrate; a second black matrix; and the third substrate. A plurality of second source lines extending in the first direction and a plurality of second gate lines extending in the second direction, and the first black matrix is formed in a plan view. The plurality of first source lines and the plurality of first gate lines are formed to extend in the first direction and the second direction so as to overlap with each other, and the second black matrix is the plurality of the plurality of second black matrices in plan view. Extending in the first direction and the second direction so as to overlap with the second source line and the plurality of second gate lines, and formed in a lattice shape, the first direction of the second black matrix The length of the portion extending in the second direction is the first Shorter than the length of the second direction of a portion extending in the first direction of the black matrix, characterized in that.

  In the liquid crystal display device according to the present invention, the length in the second direction of the portion extending in the first direction of the second black matrix is not more than the length in the second direction of the second source line. It may be.

  In the liquid crystal display device according to the present invention, the second black matrix may be formed on the fourth substrate.

  In the liquid crystal display device according to the present invention, the second black matrix may be formed on the third substrate.

  In the liquid crystal display device according to the present invention, a color filter that transmits light of a predetermined color may be formed on the third substrate.

  In the liquid crystal display device according to the present invention, the second display panel further includes a plurality of thin film transistors, and the length in the first direction of the portion extending in the second direction of the second black matrix is The semiconductor layer constituting the thin film transistor may be longer than the length in the first direction and may be longer than the length in the first direction of the portion of the first black matrix extending in the second direction.

  In the liquid crystal display device according to the present invention, the liquid crystal display device further includes a backlight disposed at a position farther from the observer than the second display panel, and the second display panel further includes a plurality of thin film transistors. The second black matrix may be disposed between the plurality of thin film transistors and the backlight.

  In the liquid crystal display device according to the present invention, each of the first display panel and the second display panel includes a plurality of pixels, and the second display panel includes a first pixel corresponding to a first color, and a second pixel. A second pixel corresponding to the first color and a third pixel corresponding to the third color, and the first display panel includes the first pixel, the second pixel, and the third pixel in plan view. A fourth pixel that overlaps with the fourth pixel may be included.

  A liquid crystal display device according to the present invention is a liquid crystal display device in which a plurality of display panels are arranged to overlap each other and display an image on each of the display panels. The liquid crystal display device is observed from the first display panel and the first display panel. A second display panel disposed at a position far from a person, wherein the first display panel includes a first substrate, a second substrate disposed at a position farther from the observer than the first substrate, and the first display panel. A first liquid crystal layer disposed between one substrate and the second substrate; a first black matrix formed on the first substrate; a plurality of first source lines extending in a first direction; A plurality of first gate lines extending in a second direction intersecting the first direction; and a plurality of first thin film transistors formed on the second substrate, wherein the second display panel includes a third substrate, , Placed farther from the viewer than the third substrate A fourth substrate, a second liquid crystal layer disposed between the third substrate and the fourth substrate, a second black matrix formed on the fourth substrate, and extending in the first direction A plurality of second source lines, a plurality of second gate lines extending in the second direction, and a plurality of second thin film transistors formed on the third substrate, wherein the first black matrix includes: The length in the first direction of the portion extending in the second direction is longer than the length in the first direction of the first semiconductor layer constituting the first thin film transistor, and in the second direction of the second black matrix. The length of the extending part in the first direction is longer than the length of the second semiconductor layer constituting the second thin film transistor in the first direction.

  In the liquid crystal display device according to the present invention, the first semiconductor layer is disposed between the first gate line and the first black matrix, and the second semiconductor layer includes the second gate line and the first gate line. You may arrange | position between 2nd black matrices.

  In the liquid crystal display device according to the present invention, the length in the first direction of the portion extending in the second direction of the first black matrix is longer than the length in the first direction of the first gate line, The length in the first direction of the portion extending in the second direction of the second black matrix may be longer than the length in the first direction of the second gate line.

  In the liquid crystal display device according to the present invention, the length in the first direction of the portion of the second black matrix extending in the second direction is the length of the portion of the first black matrix extending in the second direction. It may be longer than the length in the first direction.

  According to the liquid crystal display device of the present invention, in a liquid crystal display device configured by overlapping a plurality of display panels, reflection due to external light can be suppressed and the aperture ratio of the pixel can be improved.

It is a perspective view which shows schematic structure of the liquid crystal display device which concerns on this embodiment. It is a figure which shows typically schematic structure of the said liquid crystal display device. 3 is a plan view illustrating a schematic configuration of a front display panel according to Embodiment 1. FIG. 3 is a plan view illustrating a schematic configuration of a rear display panel according to Embodiment 1. FIG. It is 5-5 'sectional drawing of FIG.3 and FIG.4. FIG. 3 is a plan view illustrating a relationship between a pixel on the front display panel and a pixel on the rear display panel according to the first embodiment. It is a top view which shows the specific structure of the pixel corresponding to FIG. It is sectional drawing in the 8-8 'cut line of FIG. It is sectional drawing in the 9-9 'cutting line of FIG. 3 is a schematic diagram illustrating an example of image display (black image) in the liquid crystal display device according to Embodiment 1. FIG. FIG. 3 is a schematic diagram illustrating an example of image display (green image) in the liquid crystal display device according to the first embodiment. 2 is a diagram illustrating a configuration of drivers of a front display panel and a rear display panel according to Embodiment 1. FIG. FIG. 10 is a plan view illustrating a specific configuration of a pixel on a front display panel and a pixel on a rear display panel according to Embodiment 2. It is sectional drawing in the 14-14 'cutting line of FIG. 6 is a schematic diagram illustrating an example of image display (green image) in the liquid crystal display device according to Embodiment 2. FIG. FIG. 6 is a cross-sectional view in a direction crossing gate lines of a front display panel and a rear display panel according to a third embodiment. FIG. 5 is a cross-sectional view in a direction crossing source lines of a front display panel and a rear display panel according to a third embodiment. 10 is a schematic diagram illustrating an example of image display (green image) in the liquid crystal display device according to Embodiment 3. FIG. FIG. 6 is a cross-sectional view in a direction crossing gate lines of a front display panel and a rear display panel according to a fourth embodiment. FIG. 10 is a schematic diagram illustrating an example of image display (green image) in the liquid crystal display device according to the fourth embodiment. 11 is a plan view showing a specific configuration of pixels of a front display panel and pixels of a rear display panel according to Modification 1. FIG. 11 is a plan view showing a specific configuration of pixels of a front display panel and pixels of a rear display panel according to Modification 2. FIG. 14 is a cross-sectional view in a direction crossing source lines of a front display panel and a rear display panel according to Modification 3. FIG.

  Embodiments of the present invention will be described below with reference to the drawings. A liquid crystal display device according to each embodiment described below includes a plurality of display panels that display images, a plurality of drive circuits (a plurality of source drivers and a plurality of gate drivers) that drive the respective display panels, and respective drives. A plurality of timing controllers that control the circuit, an image processing unit that performs image processing on input video signals input from the outside, and outputs image data to each timing controller, and a plurality of display panels that emit light from the back side And a backlight for irradiating. The number of display panels is not limited and may be two or more. The plurality of display panels are arranged so as to overlap each other in the front-rear direction as viewed from the observer side, and each displays an image. Hereinafter, a liquid crystal display device LCD having two display panels will be described as an example.

  FIG. 1 is a perspective view showing a schematic configuration of a liquid crystal display device LCD according to the present embodiment. As shown in FIG. 1, the liquid crystal display device LCD includes a display panel LCP1 arranged at a position (front side) close to the observer, and a display panel LCP2 arranged at a position (rear side) farther from the observer than the display panel LCP1. An adhesive layer SEFIL that bonds the display panel LCP1 and the display panel LCP2, a backlight BL disposed on the back side of the display panel LCP2, and a front chassis FS that covers the display panel LCP1 and the display panel LCP2 from the display surface side. Contains.

  FIG. 2 is a diagram schematically showing a schematic configuration of the liquid crystal display device LCD according to the present embodiment. As shown in FIG. 2, the display panel LCP1 includes a first source driver SD1 and a first gate driver GD1, and the display panel LCP2 includes a second source driver SD2 and a second gate driver GD2. The liquid crystal display device LCD includes a first timing controller TCON1 that controls the first source driver SD1 and the first gate driver GD1, a second timing controller TCON2 that controls the second source driver SD2 and the second gate driver GD2, and a second timing controller TCON2. And an image processing unit IPU that outputs image data to the first timing controller TCON1 and the second timing controller TCON2. For example, the display panel LCP1 displays a black and white image corresponding to the input video signal in the first image display area DISP1, and the display panel LCP2 displays a color image corresponding to the input video signal in the second image display area DISP2. The image processing unit IPU receives an input video signal Data transmitted from an external system (not shown), performs well-known image processing, and then outputs first image data DAT1 to the first timing controller TCON1, The second image data DAT2 is output to the second timing controller TCON2. The image processing unit IPU outputs a control signal (not shown in FIG. 2) such as a synchronization signal to the first timing controller TCON1 and the second timing controller TCON2. The first image data DAT1 is image data for displaying a monochrome image, and the second image data DAT2 is image data for displaying a color image.

[Embodiment 1]
FIG. 3 is a plan view showing a schematic configuration of the display panel LCP1 according to the first embodiment, and FIG. 4 is a plan view showing a schematic configuration of the display panel LCP2 according to the first embodiment. FIG. 5 is a cross-sectional view taken along line 5-5 ′ of FIGS.

  A schematic configuration of the display panel LCP1 will be described with reference to FIGS. As shown in FIG. 5, the display panel LCP1 includes a thin film transistor substrate TFT1 disposed on the backlight BL side, a counter substrate CF1 disposed on the viewer side and facing the thin film transistor substrate TFT1, and the thin film transistor substrate TFT1 and the counter substrate CF1. And a liquid crystal layer LC1 disposed between them. A polarizing plate POL2 is disposed on the backlight BL side of the display panel LCP1, and a polarizing plate POL1 is disposed on the viewer side.

  As shown in FIG. 3, the thin film transistor substrate TFT1 has a plurality of source lines SL extending in a first direction (for example, the column direction) and a second direction (for example, the row direction) intersecting the first direction. A plurality of gate lines GL are formed, and a thin film transistor TFT is formed in the vicinity of each intersection of the plurality of source lines SL and the plurality of gate lines GL. When the display panel LCP1 is viewed in plan, a region surrounded by two adjacent source lines SL and two adjacent gate lines GL is defined as one pixel PIX1, and the pixel PIX1 is arranged in a matrix (in the row direction). And in the column direction). The plurality of source lines SL are arranged at equal intervals in the row direction, and the plurality of gate lines GL are arranged at equal intervals in the column direction. On the thin film transistor substrate TFT1 (see FIG. 5), a pixel electrode PX is formed for each pixel PIX1, and one common electrode CT (see FIG. 8) common to the plurality of pixels PIX1 is formed. The source electrode constituting the thin film transistor TFT is electrically connected to the source line SL, the drain electrode DD (see FIG. 7) is electrically connected to the pixel electrode PX through the contact hole, and the gate electrode is electrically connected to the gate line GL. Connected.

  As shown in FIG. 5, the counter substrate CF1 is formed with a light transmitting portion that transmits light and a black matrix BM1 (light shielding portion) that blocks light transmission. In the light transmitting portion, the color filter FIL (colored layer) is not formed, and for example, an overcoat film OC is formed.

  The first timing controller TCON1 has a known configuration. For example, the first timing controller TCON1 uses the first image data DA1 based on the first image data DAT1 output from the image processing unit IPU and the first control signal CS1 (clock signal, vertical synchronization signal, horizontal synchronization signal, etc.). And various timing signals (data start pulse DSP1, data clock DCK1, gate start pulse GSP1, gate clock GCK1) for controlling the driving of the first source driver SD1 and the first gate driver GD1 (see FIG. 3). ). The first timing controller TCON1 outputs the first image data DA1, the data start pulse DSP1, and the data clock DCK1 to the first source driver SD1, and the gate start pulse GSP1 and the gate clock GCK1 to the first gate driver GD1. Output.

  The first source driver SD1 outputs a data signal (data voltage) corresponding to the first image data DA1 to the source line SL based on the data start pulse DSP1 and the data clock DCK1. The first gate driver GD1 outputs a gate signal (gate voltage) to the gate line GL based on the gate start pulse GSP1 and the gate clock GCK1.

  A data voltage is supplied from the first source driver SD1 to each source line SL, and a gate voltage is supplied from the first gate driver GD1 to each gate line GL. A common voltage Vcom is supplied to the common electrode CT from a common driver (not shown). When the gate voltage (gate-on voltage) is supplied to the gate line GL, the thin film transistor TFT connected to the gate line GL is turned on, and the data voltage is supplied to the pixel electrode PX via the source line SL connected to the thin film transistor TFT. Is done. An electric field is generated by the difference between the data voltage supplied to the pixel electrode PX and the common voltage Vcom supplied to the common electrode CT. The liquid crystal is driven by this electric field to control the light transmittance of the backlight BL, thereby displaying an image. In the display panel LCP1, black and white image display is performed by supplying a desired data voltage to the source line SL connected to the pixel electrode PX of each pixel PIX1.

  Next, the configuration of the display panel LCP2 will be described with reference to FIGS. As shown in FIG. 5, the display panel LCP2 includes a thin film transistor substrate TFT2 disposed on the observer side, a counter substrate CF2 disposed on the backlight BL side and facing the thin film transistor substrate TFT2, and the thin film transistor substrate TFT2 and the counter substrate CF2 And a liquid crystal layer LC2 disposed between the two. A polarizing plate POL4 is disposed on the backlight BL side of the display panel LCP2, and a polarizing plate POL3 is disposed on the viewer side. An adhesive layer SEFIL is arranged between the polarizing plate POL2 of the display panel LCP1 and the polarizing plate POL3 of the display panel LCP2.

  As shown in FIG. 4, a plurality of source lines SL extending in the column direction and a plurality of gate lines GL extending in the row direction are formed on the thin film transistor substrate TFT2, and the plurality of source lines SL and the plurality of gate lines GL are formed. A thin film transistor TFT is formed in the vicinity of each intersection with the gate line GL. When the display panel LCP2 is viewed in plan, a region surrounded by two adjacent source lines SL and two adjacent gate lines GL is defined as one pixel PIX2, and the pixel PIX2 is arranged in a matrix (in the row direction). And in the column direction). The plurality of source lines SL are arranged at equal intervals in the row direction, and the plurality of gate lines GL are arranged at equal intervals in the column direction. On the thin film transistor substrate TFT2 (see FIG. 5), a pixel electrode PX is formed for each pixel PIX2, and one common electrode CT (see FIG. 8) common to the plurality of pixels PIX2 is formed. The source electrode constituting the thin film transistor TFT is electrically connected to the source line SL, the drain electrode DD (see FIG. 7) is electrically connected to the pixel electrode PX through the contact hole, and the gate electrode is electrically connected to the gate line GL. Connected.

  The counter substrate CF2 (see FIG. 5) is formed with a light transmission portion that transmits light. In the light transmission portion, a plurality of color filters FIL (colored layers) are formed corresponding to each pixel PIX2. Each color filter FIL is formed in a rectangular shape, for example, corresponding to the pixel PIX2. The plurality of color filters FIL are formed of a red (R color) material, are formed of a red color filter FILR (red layer) that transmits red light, and a green (G color) material, and emits green light. And a blue color filter FILB (blue layer) which is formed of a blue (B color) material and transmits blue light (see FIG. 8). The red color filter FILR, the green color filter FILG, and the blue color filter FILB are repeatedly arranged in this order in the row direction, and the color filters FIL of the same color are arranged in the column direction. As shown in FIG. 4, the plurality of pixels PIX2 corresponding to each color filter FIL includes a red pixel PIXR corresponding to the red color filter FILR, a green pixel PIXG corresponding to the green color filter FILG, and a blue color filter FILB. And a blue pixel PIXB corresponding to. In the display panel LCP2, red pixels PIXR, green pixels PIXG, and blue pixels PIXB are repeatedly arranged in this order in the row direction, and pixels PIX2 of the same color are arranged in the column direction. The plurality of pixels PIX2 may include a yellow pixel corresponding to the yellow color filter, a white pixel in which no color filter is formed, and the like.

  The second timing controller TCON2 has a known configuration. For example, the second timing controller TCON2 uses the second image data DA2 based on the second image data DAT2 output from the image processing unit IPU and the second control signal CS2 (clock signal, vertical synchronization signal, horizontal synchronization signal, etc.). And various timing signals (data start pulse DSP2, data clock DCK2, gate start pulse GSP2, gate clock GCK2) for controlling driving of the second source driver SD2 and the second gate driver GD2 (see FIG. 4). ). The second timing controller TCON2 outputs the second image data DA2, the data start pulse DSP2, and the data clock DCK2 to the second source driver SD2, and outputs the gate start pulse GSP2 and the gate clock GCK2 to the second gate driver GD2. Output.

  The second source driver SD2 outputs a data voltage corresponding to the second image data DA2 to the source line SL based on the data start pulse DSP2 and the data clock DCK2. The second gate driver GD2 outputs a gate voltage to the gate line GL based on the gate start pulse GSP2 and the gate clock GCK2.

  A data voltage is supplied from the second source driver SD2 to each source line SL, and a gate voltage is supplied from the second gate driver GD2 to each gate line GL. A common voltage Vcom is supplied to the common electrode CT from a common driver. When the gate voltage (gate-on voltage) is supplied to the gate line GL, the thin film transistor TFT connected to the gate line GL is turned on, and the data voltage is supplied to the pixel electrode PX via the source line SL connected to the thin film transistor TFT. Is done. An electric field is generated by the difference between the data voltage supplied to the pixel electrode PX and the common voltage Vcom supplied to the common electrode CT. The liquid crystal is driven by this electric field to control the light transmittance of the backlight BL, thereby displaying an image. In the display panel LCP2, a color data display is performed by supplying a desired data voltage to the source line SL connected to the pixel electrodes PX of the red pixel PIXR, the green pixel PIXG, and the blue pixel PIXB.

  The liquid crystal display device LCD is configured such that the number of pixels PIX1 per unit area of the display panel LCP1 is smaller than the number of pixels PIX2 per unit area of the display panel LCP2. For example, in the liquid crystal display device LCD, the number of pixels PIX1 of the display panel LCP1 and the number of pixels PIX2 of the display panel LCP2 are configured in a ratio of 1: 3. In addition, one pixel PIX1 of the display panel LCP1 and three pixels PIX2 (red pixel PIXR, green pixel PIXG, blue pixel PIXB) of the display panel LCP2 are configured to overlap each other in plan view. . When the pixel PIX2 of the display panel LCP2 includes a white pixel, one pixel PIX1 of the display panel LCP1 and four pixels PIX2 (red pixel PIXR, green pixel PIXG, blue pixel PIXB, white pixel of the display panel LCP2) Pixel) may overlap each other in plan view. Further, one pixel PIX1 of the display panel LCP1 and two pixels PIX2 of the display panel LCP2 may be configured to overlap each other in plan view.

  FIG. 6 is a plan view showing the relationship between the pixel PIX1 of the display panel LCP1 and the pixel PIX2 of the display panel LCP2 that overlap each other in plan view, and FIG. 7 shows specific examples of the pixels PIX1 and PIX2 corresponding to FIG. FIG. In the example shown in FIG. 6, one pixel PIX1 of the display panel LCP1, which overlaps each other in plan view, one red pixel PIXR, one green pixel PIXG, and one blue pixel PIXB of the display panel LCP2 are combined. Show. When the area (size) of each pixel PIX2 of the display panel LCP2 is equal to each other, the area of one pixel PIX1 of the display panel LCP1 is three times the area of one pixel PIX2 of the display panel LCP2. The area of one pixel PIX1 is equal to the sum of the area of one red pixel PIXR, the area of one green pixel PIXG, and the area of one blue pixel PIXB. FIG. 6 shows the common wiring CL connected to the common electrode CT (see FIG. 8) and the liquid crystal capacitor CLC.

  FIG. 7 shows the semiconductor layer SI (channel) and the drain electrode DD constituting the thin film transistor TFT. A slit may be formed in the pixel electrode PX. As shown in FIG. 7, the black matrix BM1 of the display panel LCP1 extends in the row direction and the column direction so as to overlap both the gate line GL and the source line SL in a plan view, and is formed in a lattice shape. ing. That is, the black matrix BM1 of the display panel LCP1 has a plurality of first stripe portions (hereinafter referred to as portions extending in the row direction) BM1a overlapping with each of the plurality of gate lines GL of the display panel LCP1 in a plan view. And a plurality of second stripe portions (hereinafter, portions extending in the column direction) BM1b overlapping each of the plurality of source lines SL of the display panel LCP1. In the black matrix BM1, a portion overlapping the gate line GL is longer than the length of the gate line GL in the column direction, and a portion overlapping the source line SL is longer than the length of the source line SL in the row direction. On the other hand, the black matrix BM2 of the display panel LCP2 extends in the row direction so as to overlap the gate lines GL, and is formed in a stripe shape. In other words, the black matrix BM2 of the display panel LCP2 includes a plurality of third stripe portions (hereinafter, portions extending in the row direction) BM2a overlapping each of the plurality of gate lines GL of the display panel LCP2 in plan view. Yes. That is, the black matrix BM2 does not include a portion extending in the column direction so as to cover the entire source line SL in plan view. In the black matrix BM2, the portion overlapping the gate line GL is longer than the length of the gate line GL in the column direction.

  8 is a cross-sectional view taken along the line 8-8 ′ of FIG. 7, and FIG. 9 is a cross-sectional view taken along the line 9-9 ′ of FIG. A cross-sectional structure of the pixels PIX1 and PIX2 will be described with reference to FIGS.

  In the thin film transistor substrate TFT1 (see FIG. 5) constituting the pixel PIX1 of the display panel LCP1, the gate line GL (see FIG. 9) is formed on the transparent substrate SUB2 (glass substrate) (second substrate), and the gate line GL. A gate insulating film GSN is formed so as to cover. A source line SL (see FIG. 8) is formed on the gate insulating film GSN, a protective film PAS and an organic film OPAS are formed so as to cover the source line SL, and a common electrode CT is formed on the organic film OPAS. The protective film UPAS is formed so as to cover the common electrode CT. A pixel electrode PX is formed on the protective film UPAS, and an alignment film (not shown) is formed so as to cover the pixel electrode PX. The source lines SL are arranged at equal intervals in the row direction, and the gate lines GL are arranged at equal intervals in the column direction. In the counter substrate CF1 (see FIG. 5), a grid-like black matrix BM1 is formed on a transparent substrate SUB1 (glass substrate) (first substrate), and an opening (light transmission portion) and black of the black matrix BM1 are formed. An overcoat film OC is coated on the matrix BM1, and an alignment film (not shown) is formed on the overcoat film OC.

  In the thin film transistor substrate TFT2 (see FIG. 5) constituting the pixel PIX2 of the display panel LCP2, the gate line GL (see FIG. 9) is formed on the transparent substrate SUB3 (third substrate) so as to cover the gate line GL. A gate insulating film GSN is formed. A source line SL (see FIG. 8) is formed on the gate insulating film GSN, a protective film PAS and an organic film OPAS are formed so as to cover the source line SL, and a common electrode CT is formed on the organic film OPAS. The protective film UPAS is formed so as to cover the common electrode CT. A pixel electrode PX is formed on the protective film UPAS, and an alignment film (not shown) is formed so as to cover the pixel electrode PX. The source lines SL are arranged at equal intervals in the row direction, and the gate lines GL are arranged at equal intervals in the column direction. In the counter substrate CF2 (see FIG. 5), a striped black matrix BM2 (see FIG. 9), a color filter FIL (a red color filter FILR, a green color filter FILG, and a blue color) are formed on the transparent substrate SUB4 (fourth substrate). Color filter FILB). The surface of the color filter FIL is covered with an overcoat film OC, and an alignment film (not shown) is formed on the overcoat film OC. Each color filter FIL is arranged so that the boundary portion between adjacent color filters FIL overlaps the source line SL in plan view.

  The source line SL of the display panel LCP1 overlaps the source line SL of the display panel LCP2 in plan view. The portion extending in the row direction of the black matrix BM1 of the display panel LCP1 overlaps with the portion extending in the row direction of the black matrix BM2 of the display panel LCP2 in plan view. The black matrix BM1 is formed so as to surround the three pixels PIX2 including the red pixel PIXR, the green pixel PIXG, and the blue pixel PIXB in plan view. Therefore, for example, the interval (pitch) in the row direction of the portion extending in the column direction of the black matrix BM1 is equal to the length in the row direction of the three pixels PIX2. The interval (pitch) is equal to 3 times the interval (pitch) in the row direction of the source lines SL of the display panel LCP2.

  Thus, in the liquid crystal display device LCD according to the first embodiment, the black matrix BM1 of the display panel LCP1 has an opening width that surrounds the plurality of pixels PIX2 of the display panel LCP2. Further, the black matrix BM2 of the display panel LCP2 does not include a portion extending in the column direction so as to cover the entire source line SL in plan view. Here, although the aperture ratio of the pixel is affected by the width of the source line which is a metal wiring, the width of the source line is generally smaller than the width of the black matrix. Therefore, according to the configuration of the liquid crystal display device LCD according to the first embodiment, the black matrix (portion extending in the column direction) that overlaps the source line SL is omitted, and thus compared with the conventional liquid crystal display device. The aperture ratio of the pixel can be improved by at least the amount corresponding to the difference between the width of the black matrix and the width of the source line.

  Here, in the display panel LCP2, when the portion of the black matrix that overlaps the source line SL is omitted as described above, the source line SL is exposed without being covered with the black matrix in a plan view, and thus the external light in the source line SL is exposed. There is concern about the reflection. However, the above reflection hardly occurs for the following reason.

  FIG. 10 is a schematic diagram illustrating an example of image display in the liquid crystal display device LCD according to the first embodiment. FIG. 10 shows a case where a black image having the greatest influence of reflection is displayed. Note that the black image may be displayed on the entire display screen or may be displayed in part. When displaying a black image, as shown in FIG. 10A, the liquid crystal layer LC1 and the liquid crystal layer LC2 in the corresponding regions in the display panel LCP1 and the display panel LCP2 are turned off. In this case, as shown in FIG. 10 (b), the light emitted to the black matrix BM1 out of the external light is absorbed by the black matrix BM1. In addition, the light irradiated to the opening (light transmissive portion) where the black matrix BM1 is not formed among the external light passes through the light transmissive portion, but the liquid crystal layer LC1 is in the off state, so that the polarizing plate POL1 and the crossed Nicols Are blocked by the polarizing plate POL2. For this reason, the light incident on the display panel LCP1 from the outside is blocked in the display panel LCP1 and is not incident on the display panel LCP2 side, and thus is not reflected on the source line SL of the display panel LCP2. Thus, in the display panel LCP2, even if the portion of the black matrix BM2 that overlaps the source line SL is omitted, it is possible to make it difficult for external light to be reflected on the source line of the display panel LCP2.

  Therefore, according to the configuration of the liquid crystal display device LCD according to the first embodiment, reflection by external light can be suppressed and the aperture ratio of the pixel can be improved.

  Further, according to the configuration of the liquid crystal display device LCD according to the first embodiment, an effect that color mixing can be suppressed is also obtained. For example, in a liquid crystal display device including a red pixel, a green pixel, and a blue pixel, the mixed color includes light transmitted through the region of the green pixel and the green pixel depending on the viewing direction when a green single-color image is displayed. The light that passes through the red pixel area adjacent to the light or the light that passes through the blue pixel area is mixed, and a reddish green image or a bluish green image may be visually recognized. . The color mixture is easily visually recognized when, for example, the display screen is viewed from an oblique direction or when there is a deviation in alignment between the thin film transistor substrate and the counter substrate. In general, a black matrix has both the above-described function of suppressing reflection of external light and the above-described function of suppressing color mixing.

  In this regard, in the configuration of the liquid crystal display device LCD according to the first embodiment, in the display panel LCP2, the black matrix BM2 is not formed at the boundary between the red pixel, the green pixel, and the blue pixel. . However, the above color mixture hardly occurs for the following reasons.

  FIG. 11 is a schematic diagram illustrating an example of image display in the liquid crystal display device LCD according to the first embodiment, and illustrates a case where a green image is displayed. Note that the green image may be displayed on the entire display screen or may be displayed in part. When displaying a green image, as shown in FIG. 11A, the liquid crystal layer LC2 corresponding to the green pixel PIXG is turned on, and the liquid crystal layer LC2 corresponding to the red pixel PIXR and the blue pixel PIXB is turned off. . When a green monochromatic image is displayed on the entire display screen, all the liquid crystal layers LC1 are turned on. In this case, as shown in FIG. 11B, for example, the light in the (A) direction and the light in the (B) direction of the backlight light are shielded by the source line SL of the display panel LCP2 and are not emitted to the viewer side. .

  Thus, in the liquid crystal display device LCD according to the first embodiment, in the display panel LCP2, the thin film transistor substrate TFT2 on which the source line SL is formed is arranged on the viewer side (display panel LCP1 side), whereby the display panel LCP2 Source line SL can block light leaking from adjacent pixels that cause the color mixture. That is, the source line SL of the display panel LCP2 also has a color mixing suppression function that the black matrix originally has. For this reason, in the display panel LCP2, even if the portion of the black matrix BM2 that overlaps the source line SL is omitted, it is possible to prevent color mixing.

  Further, according to the configuration of the liquid crystal display device LCD according to the first embodiment, the black matrix BM2 is arranged closer to the backlight BL than the thin film transistor TFT (see FIG. 7B) of the display panel LCP2 as shown in FIG. The thin film transistor TFT and the gate line GL are covered in a plan view. In the display panel LCP2, the black matrix BM2 has a column-direction length W2 (see FIG. 7B) of the portion BM2a extending in the row direction covering the gate lines GL. The length W3 is longer than the length W4 (channel width) in the column direction of the semiconductor layer SI. For this reason, even when the light intensity of the backlight BL is high, the backlight light is applied to the semiconductor layer SI (see FIG. 7B), or the backlight light is reflected at the interface of the laminated film constituting the pixel. Irradiation to the semiconductor layer SI can be suppressed. For this reason, an increase in leakage current (off-state current) in the off state of the thin film transistor TFT of the display panel LCP2 can be suppressed, so that malfunction of the liquid crystal display device LCD can be prevented and power consumption can be reduced. Can be increased. Similarly, in the display panel LCP1, the black matrix BM1 has a column-direction length W1 (see FIG. 7A) of the portion BM1a extending in the row direction that covers the gate lines GL in the column direction of the gate lines GL. It is longer than the length W5 and the length W6 (channel width) in the column direction of the semiconductor layer SI. Here, as shown in FIG. 7 and FIG. 9, the length in the column direction of the portion located between two adjacent thin film transistors TFT in plan view among the portions BM1a extending in the row direction of the black matrix BM1. W1 may be shorter than the length W2 in the column direction of the black matrix BM2. Thereby, compared with the case where the length W1 of the black matrix BM1 is the same as the length W2 of the black matrix BM2, the amount of light emitted from the display panel LCP1 can be increased.

  FIG. 12 is a diagram illustrating a configuration of drivers of the display panel LCP1 and the display panel LCP2. Two TCP (Tape Carrier Packages) each having a source driver IC (SIC) mounted thereon are connected to the display panel LCP1, and each TCP is connected to the source printed circuit board SKIB. In contrast, the display panel LCP2 is connected to six TCPs each having a source driver IC (SIC) mounted thereon, and each TCP is connected to the source printed circuit board SKIB. As described above, since the number of source driver ICs of the display panel LCP1 can be reduced as compared with the display panel LCP2, the cost of the liquid crystal display device LCD can be reduced.

[Embodiment 2]
Embodiment 2 of the present invention will be described below with reference to the drawings. For convenience of explanation, the same reference numerals are given to the constituent elements shown in the first embodiment and the description thereof will be omitted. In addition, the terms defined in the first embodiment are used in accordance with the definitions in the present embodiment unless otherwise specified. The same applies to each embodiment described later.

  FIG. 13 is a plan view showing a specific configuration of the pixel PIX1 of the display panel LCP1 and the pixel PIX2 of the display panel LCP2 that overlap each other in the liquid crystal display device LCD according to the second embodiment. 14 is a cross-sectional view taken along the line 14-14 ′ of FIG. The display panel LCP1 according to the second embodiment has the same configuration as the display panel LCP1 according to the first embodiment. In the display panel LCP2 according to the second embodiment, the black matrix BM2 extends in the row direction and the column direction so as to overlap both the gate line GL and the source line SL in plan view, and is formed in a lattice shape. . That is, the black matrix BM2 of the display panel LCP2 includes a plurality of fourth stripe portions (hereinafter, portions extending in the column direction) that overlap each of the portion BM2a extending in the row direction and the plurality of source lines SL of the display panel LCP2. ) BM2b. As shown in FIG. 14, the black matrix BM2 is formed on the transparent substrate SUB4 of the counter substrate CF2 (see FIG. 5) disposed on the backlight BL side, as in the first embodiment. Further, as shown in FIG. 13B, the length W2 in the column direction of the portion BM2a extending in the row direction covering the gate line GL of the black matrix BM2 is the length W3 in the column direction of the gate line GL. And it is longer than the length W4 of the semiconductor layer SI in the column direction. Further, as shown in FIG. 14, the length L1 in the row direction of the portion BM2b extending in the column direction overlapping the source line SL in the black matrix BM2 is shorter than the length L2 in the row direction of the source line SL. Yes. The length L1 may be equal to the length L2. Other configurations are the same as those of the liquid crystal display device LCD according to the first embodiment.

  According to the above configuration, the black matrix BM2 of the second embodiment has a portion that overlaps the source line SL as compared with the black matrix BM2 of the first embodiment (see FIG. 7B), but the row direction of the portion. The length L1 of the source line SL is less than or equal to the length L2 in the row direction of the source line SL, and therefore does not affect the aperture ratio. Therefore, also in the configuration of the second embodiment, an aperture ratio equivalent to that of the first embodiment can be obtained, and similarly to the first embodiment, reflection by external light can be suppressed and the aperture ratio of the pixel can be improved. The length L1 is preferably equal to or shorter than the length L2, but may be at least shorter than the length L3 in the row direction of the black matrix BM1 of the display panel LCP1. Thereby, an aperture ratio can be improved compared with the conventional structure.

  FIG. 15 is a schematic diagram illustrating an example of image display in the liquid crystal display device LCD according to the second embodiment, and illustrates a case where a green image is displayed. Also in the configuration of the second embodiment, similarly to the first embodiment (see FIG. 11B), the light in the (A) direction and the light in the (B) direction of the backlight light (FIG. The dotted line b) can be shielded by the source line SL of the display panel LCP2. Furthermore, according to the configuration of the second embodiment, since the black matrix BM2 extending in the column direction is formed on the backlight BL side, the light in the (C) direction of the backlight light that can cause color mixture (see FIG. 15 (b) can be shielded by the black matrix BM2. Therefore, according to the configuration of the second embodiment, compared with the configuration of the first embodiment, the effect of suppressing color mixing can be enhanced.

[Embodiment 3]
The planar configurations of the display panel LCP1 and the display panel LCP2 according to the third embodiment are the same as the planar configurations of the display panel LCP1 and the display panel LCP2 according to the first embodiment (see FIGS. 6 and 7).

  16 is a cross-sectional view in the direction crossing the gate lines GL of the display panel LCP1 and the display panel LCP2 in the liquid crystal display device LCD according to the third embodiment, and FIG. 17 is a cross-sectional view in the direction crossing the source SL. .

  The cross-sectional configuration of the display panel LCP1 according to the third embodiment is the same as the cross-sectional configuration of the display panel LCP1 according to the first embodiment (see FIGS. 8 and 9).

  In the display panel LCP2 according to the third embodiment, the gate line GL (see FIG. 17) is formed on the transparent substrate SUB3, and the gate insulating film GSN is formed so as to cover the gate line GL. A source line SL (see FIG. 16) is formed on the gate insulating film GSN, and a protective film PAS is formed so as to cover the source line SL. On the protective film PAS, a black matrix BM2 (see FIG. 17) is formed so as to overlap with the gate line GL in plan view, and a color filter FIL (red light) is formed in a region (light transmitting portion) surrounded by the black matrix BM2. Color filters FILR, green color filters FILG, and blue color filters FILB) (see FIG. 16) are formed. The black matrix BM2 is arranged at a position closer to the backlight BL than the gate line GL. A common electrode CT is formed on the color filter FIL, and a protective film UPAS is formed so as to cover the common electrode CT. A pixel electrode PX is formed on the protective film UPAS, and an alignment film (not shown) is formed so as to cover the pixel electrode PX. In the counter substrate CF2, an overcoat film OC is coated on the transparent substrate SUB4, and an alignment film (not shown) is formed on the overcoat film OC.

  Also in the above configuration, similarly to the first embodiment, reflection by external light can be suppressed and the aperture ratio of the pixel can be improved. Further, in the liquid crystal display device LCD according to the third embodiment, the display panel LCP2 is a so-called color filter on array (color filter FIL) in which a color filter FIL is formed on a transparent substrate SUB3 (thin film transistor substrate TFT2) on which a plurality of source lines SL are arranged. COA). Therefore, the color filter FIL for each color and the source line SL can be accurately aligned. Therefore, as compared with the first embodiment, it is difficult for the color filter FIL and the source line SL to be misaligned, so that the color mixture due to the light in the (B) direction of the backlight shown in FIG. Can do. Further, since the positional deviation between the color filter FIL and the source line SL is less likely to occur, the length of the source line SL in the row direction can be shortened. In this case, the aperture ratio of the pixel can be further increased.

[Embodiment 4]
The planar configurations of the display panel LCP1 and the display panel LCP2 according to Embodiment 4 are the same as the planar configurations of the display panel LCP1 and the display panel LCP2 according to Embodiment 2 (see FIG. 13).

  FIG. 19 is a cross-sectional view in the direction crossing the gate lines GL of the display panel LCP1 and the display panel LCP2 in the liquid crystal display device LCD according to the fourth embodiment.

  The cross-sectional configuration of the display panel LCP1 according to the fourth embodiment is the same as the cross-sectional configuration of the display panel LCP1 according to the first embodiment (see FIGS. 8 and 9). The display panel LCP2 according to the fourth embodiment has a COA configuration as in the third embodiment. In the display panel LCP2 according to the fourth embodiment, the black matrix BM2 extends in the row direction and the column direction so as to overlap both the gate line GL and the source line SL in a plan view, and is formed in a lattice shape. Yes. As shown in FIG. 19, the black matrix BM2 is formed on the transparent substrate SUB4 of the counter substrate CF2 (see FIG. 5) disposed on the backlight BL side. The length L1 in the row direction of the portion BM2b extending in the column direction overlapping the source line SL in the black matrix BM2 is shorter than the length L2 in the row direction of the source line SL. The length L1 may be equal to the length L2, or may be shorter than the length L3 in the row direction of the portion BM1b extending in the column direction overlapping the source line SL of the black matrix BM1. Other configurations are the same as those of the liquid crystal display device LCD according to the third embodiment.

  According to the above configuration, similarly to the first embodiment, reflection by external light can be suppressed and the aperture ratio of the pixel can be improved. Further, similarly to the second embodiment, the length L1 in the row direction of the black matrix BM2 is equal to or smaller than the length L2 in the row direction of the source line SL, so that an aperture ratio equivalent to that in the first embodiment can be obtained. . As in the third embodiment, the effect of suppressing color mixing can be increased, and the aperture ratio of the pixels can be further increased by shortening the length L2 of the source line SL in the row direction.

  Further, as shown in FIG. 20, the light in the (A) direction and the light in the (B) direction (dotted line in FIG. 20B) of the backlight light can be shielded by the source line SL of the display panel LCP2. . Further, since the black matrix BM2 extending in the column direction is formed on the backlight BL side, the light in the (C) direction of the backlight light (solid line in FIG. 20B) that may cause color mixing is Light can be shielded by the black matrix BM2. Therefore, as in the second embodiment, the effect of suppressing color mixing can be enhanced.

  The liquid crystal display device LCD of the present invention is not limited to the configuration of each of the above embodiments. For example, the black matrix BM2 of the display panel LCP2 may be formed in an island pattern at a position overlapping the thin film transistor TFT in plan view.

  In the second and fourth embodiments, the black matrix BM1 of the display panel LCP1 and the black matrix BM2 of the display panel LCP2 may have the same configuration. FIG. 21 is a plan view showing a specific configuration of the pixel PIX1 of the display panel LCP1 and the pixel PIX2 of the display panel LCP2 that overlap each other in the liquid crystal display device LCD according to the above configuration (Modification 1). As shown in FIG. 21, in the black matrix BM2, a portion extending in the column direction overlapping the source line SL is formed for each of the three pixels PIX2 including the red pixel PIXR, the green pixel PIXG, and the blue pixel PIXB. It may be.

  In the fourth embodiment, the black matrix BM2 may be formed on the transparent substrate SUB3 of the thin film transistor substrate TFT2 (see FIG. 5) as shown in FIG. 22 (Modification 2).

  In each of the above embodiments, the display panel LCP1 may display a color image, and the display panel LCP2 may display a monochrome image. In this case, for example, as shown in FIG. 23 (Modification 3), the display panel LCP1 includes a plurality of color filters FILR, FILG, FILB, a grid-like black matrix BM1, and pixels corresponding to the respective colors. . The plurality of color filters FILR, FILG, FILB and the black matrix BM1 may be formed on the transparent substrate SUB2 (thin film transistor substrate). The black matrix BM2 of the display panel LCP2 may have a stripe shape or a lattice shape as described above. The black matrix BM2 may be formed on the transparent substrate SUB4 (counter substrate).

  As mentioned above, although embodiment of this invention was described, this invention is not limited to said each embodiment, The form suitably changed by those skilled in the art from said each embodiment within the range which does not deviate from the meaning of this invention. Needless to say, it is included in the technical scope of the present invention.

  LCD liquid crystal display device, LCP1 display panel, SD1 first source driver, GD1 first gate driver, TCON1 first timing controller, LCP2 display panel, SD2 second source driver, SIC source driver IC, GIC gate driver IC, GD2 second Gate driver, TCON2 second timing controller, IPU image processing unit, SL source line, GL gate line, POL1 to POL4 polarizing plate, BM1, BM2 black matrix, BM1a (extending in the row direction of the black matrix BM1), BM1b (Extending in the column direction of the black matrix BM1), BM2a (extending in the row direction of the black matrix BM2), BM2b (extending in the column direction of the black matrix BM2), F IL color filter, PIX1, PIX2 pixel, PIXR red pixel, PIXG green pixel, PIXB blue pixel.

Claims (13)

A plurality of display panels are arranged to overlap each other, and are liquid crystal display devices that display images on the respective display panels,
A first display panel that displays a black and white image; and a second display panel that is disposed farther from the viewer than the first display panel and displays a color image;
The first display panel includes a first substrate, a second substrate disposed farther from the observer than the first substrate, and a first liquid crystal disposed between the first substrate and the second substrate. A layer, a first black matrix formed on the first substrate, a plurality of first source lines formed on the second substrate and extending in the first direction, and a second direction intersecting the first direction A plurality of first gate lines extending to
The second display panel includes a third substrate, a fourth substrate disposed at a position farther from the observer than the third substrate, and a second liquid crystal disposed between the third substrate and the fourth substrate. A layer, a second black matrix, a plurality of second source lines formed in the third substrate and extending in the first direction, and a plurality of second gate lines extending in the second direction. Including
The first black matrix is formed to extend in the first direction and the second direction so as to overlap the plurality of first source lines and the plurality of first gate lines in plan view,
The second black matrix extends in the second direction so as to overlap the plurality of second gate lines in plan view, and is formed in a stripe shape.
A liquid crystal display device characterized by the above. A plurality of display panels are arranged to overlap each other, and are liquid crystal display devices that display images on the respective display panels,
A first display panel that displays a black and white image; and a second display panel that is disposed farther from the viewer than the first display panel and displays a color image;
The first display panel includes a first substrate, a second substrate disposed farther from the observer than the first substrate, and a first liquid crystal disposed between the first substrate and the second substrate. A layer, a first black matrix formed on the first substrate, a plurality of first source lines formed on the second substrate and extending in the first direction, and a second direction intersecting the first direction A plurality of first gate lines extending to
The second display panel includes a third substrate, a fourth substrate disposed at a position farther from the observer than the third substrate, and a second liquid crystal disposed between the third substrate and the fourth substrate. A layer, a second black matrix, a plurality of second source lines formed in the third substrate and extending in the first direction, and a plurality of second gate lines extending in the second direction. Including
The first black matrix is formed to extend in the first direction and the second direction so as to overlap the plurality of first source lines and the plurality of first gate lines in plan view,
The second black matrix extends in the first direction and the second direction so as to overlap the plurality of second source lines and the plurality of second gate lines in a plan view, and is formed in a lattice shape. And
The length in the second direction of the portion extending in the first direction of the second black matrix is shorter than the length in the second direction of the portion extending in the first direction of the first black matrix.
A liquid crystal display device characterized by the above. The length in the second direction of the portion extending in the first direction of the second black matrix is not more than the length in the second direction of the second source line.
The liquid crystal display device according to claim 2. The second black matrix is formed on the fourth substrate;
The liquid crystal display device according to claim 1 or 2. The second black matrix is formed on the third substrate;
The liquid crystal display device according to claim 1 or 2. A color filter that transmits light of a predetermined color is formed on the third substrate.
The liquid crystal display device according to claim 1 or 2. The second display panel further includes a plurality of thin film transistors,
The length in the first direction of the portion extending in the second direction of the second black matrix is longer than the length in the first direction of the semiconductor layer constituting the thin film transistor, and the length of the first black matrix Longer than the length of the first direction of the portion extending in the second direction,
The liquid crystal display device according to claim 1 or 2. The liquid crystal display device further includes a backlight disposed at a position farther from the observer than the second display panel,
The second display panel further includes a plurality of thin film transistors,
The second black matrix is disposed between the plurality of thin film transistors and the backlight.
The liquid crystal display device according to claim 1 or 2. Each of the first display panel and the second display panel includes a plurality of pixels,
The second display panel includes a first pixel corresponding to a first color, a second pixel corresponding to a second color, and a third pixel corresponding to a third color,
The first display panel includes a fourth pixel that overlaps the first pixel, the second pixel, and the third pixel in plan view.
The liquid crystal display device according to claim 1 or 2. A plurality of display panels are arranged to overlap each other, and are liquid crystal display devices that display images on the respective display panels,
A first display panel, and a second display panel disposed at a position farther from the observer than the first display panel,
The first display panel includes a first substrate, a second substrate disposed farther from the observer than the first substrate, and a first liquid crystal disposed between the first substrate and the second substrate. A layer, a first black matrix formed on the first substrate, a plurality of first source lines extending in a first direction, and a plurality of first extending in a second direction intersecting the first direction. A gate line, and a plurality of first thin film transistors formed on the second substrate,
The second display panel includes a third substrate, a fourth substrate disposed at a position farther from the observer than the third substrate, and a second liquid crystal disposed between the third substrate and the fourth substrate. A second black matrix formed on the fourth substrate; a plurality of second source lines extending in the first direction; a plurality of second gate lines extending in the second direction; A plurality of second thin film transistors formed on the third substrate,
The length in the first direction of the portion extending in the second direction of the first black matrix is longer than the length in the first direction of the first semiconductor layer constituting the first thin film transistor,
The length in the first direction of the portion extending in the second direction of the second black matrix is longer than the length in the first direction of the second semiconductor layer constituting the second thin film transistor.
A liquid crystal display device characterized by the above. The first semiconductor layer is disposed between the first gate line and the first black matrix;
The second semiconductor layer is disposed between the second gate line and the second black matrix;
The liquid crystal display device according to claim 10. The length in the first direction of the portion extending in the second direction of the first black matrix is longer than the length in the first direction of the first gate line,
The length in the first direction of the portion extending in the second direction of the second black matrix is longer than the length in the first direction of the second gate line,
The liquid crystal display device according to claim 10, wherein the liquid crystal display device is a liquid crystal display device. The length in the first direction of the portion extending in the second direction of the second black matrix is longer than the length in the first direction of the portion extending in the second direction of the first black matrix,
The liquid crystal display device according to claim 12.

Images