JP5577361B2 - Display panel - Google Patents

Description

  The present invention relates to a display panel and a display device including the same, and more particularly to a display panel including a liquid crystal layer and a display device including the same.

  The liquid crystal panel includes a first substrate and a second substrate that sandwich a liquid crystal layer, and a polarizing film that polarizes light incident on the first substrate and the second substrate. The liquid crystal panel includes a color filter layer so that different colors can be expressed by light. The incident light is reduced in light efficiency while passing through the polarizing film and the color filter layer. Meanwhile, in order to compensate for the loss of light due to polarization, the liquid crystal panel may further include a DBEF (Dual Brightness Enhancement Film) on the light incident side.

  The manufacturing cost of the liquid crystal panel or the display device is increased by the polarizing film and DBEF, and the manufacturing process is complicated.

  An embodiment of the present invention provides a display panel and a display device including the same, which can reduce manufacturing costs and simplify a manufacturing process. Another embodiment of the present invention provides a display panel having increased light efficiency and a display apparatus including the same.

  Still another embodiment of the present invention provides a display device capable of realizing a passive stereoscopic image with excellent visibility.

  A display panel including a liquid crystal layer according to an embodiment of the present invention includes a first substrate and a second substrate disposed opposite to each other, and one surface between the first substrate and the second substrate. A color filter polarizing layer including first metal linear gratings formed and arranged at different pitches so that the first polarized component of the incident light formed and emitted as different color lights, and the first substrate; And a polarizing layer including a second metal linear grating formed on the other surface between the second substrate and the metal contained in the first metal linear grating and the second metal linear grating The properties of the metals contained in are different from each other.

  Of the first metal linear grating and the second metal linear grating, the reflectance of the metal linear grating arranged on the substrate on which light is incident may be larger than the reflectance of the other metal linear gratings. Of the first metal linear grating and the second metal linear grating, the stiffness of the metal linear grating arranged on the substrate from which light is emitted may be greater than the stiffness of the other metal linear gratings.

  The metal contained in the first metal linear lattice and the metal contained in the second metal linear lattice may be different from each other.

  The display panel may further include a light absorbing layer that is formed on an upper portion of the metal linear grating and that absorbs light among the first substrate and the second substrate. The display panel may further include a light absorption layer that is formed under the metal linear grating and that absorbs light among the first substrate and the second substrate.

  The display panel further includes a pixel layer formed on any one surface between the first substrate and the second substrate, wherein a pixel layer including a plurality of sub-pixels is formed, and the first metal The pitch of the linear grid is different for each of at least three subpixels.

  The first metal linear grating includes a red metal linear grating, a green metal linear grating, and a blue metal linear grating, and the red metal linear grating is arranged at a pitch smaller than ½ of the red light wavelength, The green metal linear grating is arranged at a pitch smaller than ½ of the green light wavelength, and the blue metal linear grating is arranged at a pitch smaller than ½ of the blue light wavelength. Good.

  The first metal linear grating may include a first metal layer, an insulating layer, and a second metal layer that are sequentially stacked, and the height of the first metal linear grating may be larger than the width.

  The color filter polarizing layer may further include a dielectric layer stacked under the first metal linear grating.

  According to another aspect of the present invention, there is provided a method for manufacturing a display device, wherein a first polarization component in the form of a checkerboard is formed on a surface of the first substrate located between a first substrate and a second substrate. Forming a color filter polarizing layer including a first stool optical linear grating to be transmitted and a second polarizing linear grating to transmit the second polarization component; and located between the first substrate and the second substrate. A polarizing layer is formed on the surface of the second substrate, which is in the form of a checkerboard, and includes a first edited light linear grating that transmits the first polarization component and a second polarization linear grating that transmits the second polarization component. A step of forming a pixel layer including a plurality of subpixels on one of the color filter polarizing layer and the polarizing layer, and bonding the first substrate and the second substrate, Formed between the substrate and the second substrate The space including the steps of injecting a liquid crystal, a.

  As described above, according to an embodiment of the present invention, it is possible to provide a display panel and a display apparatus including the display panel that can reduce the manufacturing cost and simplify the manufacturing process.

  In addition, according to another embodiment of the present invention, a display panel with increased light efficiency and a display apparatus including the same can be provided.

  In addition, according to another embodiment of the present invention, it is possible to provide a display device capable of realizing a passive stereoscopic image with excellent visibility.

It is a figure which shows the layer structure of the display panel which concerns on one Example of this invention. It is sectional drawing of the display panel in FIG. It is a figure which shows the color filter polarizing layer on the 1st board | substrate in FIG. It is a figure for demonstrating the 1st metal linear lattice classified by sub pixel. It is a figure for demonstrating the 1st metal linear lattice classified by sub pixel. It is sectional drawing of the color filter polarizing layer in FIG. It is sectional drawing of the polarizing layer on the 2nd board | substrate in FIG. It is a figure which shows the color filter polarizing layer and polarizing layer in the display panel which concerns on the other Example of this invention. It is a figure which shows the color filter polarizing layer and polarizing layer in the display panel which concerns on the other Example of this invention. It is a figure which shows the color filter polarizing layer and polarizing layer in the display panel which concerns on the other Example of this invention. It is sectional drawing of the other color filter polarizing layer which concerns on one Example of this invention. It is a figure for demonstrating the manufacturing method of the 1st board | substrate in the display panel which concerns on one Example of this invention. It is a figure for demonstrating the manufacturing method of the 1st board | substrate in the display panel which concerns on one Example of this invention. It is a figure for demonstrating the manufacturing method of the 1st board | substrate in the display panel which concerns on one Example of this invention. It is a figure for demonstrating the manufacturing method of the 1st board | substrate in the display panel which concerns on one Example of this invention. It is a figure for demonstrating the manufacturing method of the 2nd board | substrate in the display panel which concerns on one Example of this invention. It is a figure for demonstrating the manufacturing method of the 2nd board | substrate in the display panel which concerns on one Example of this invention. It is a figure for demonstrating the manufacturing method of the 2nd board | substrate in the display panel which concerns on one Example of this invention. It is a figure for demonstrating the manufacturing method of the 2nd board | substrate in the display panel which concerns on one Example of this invention. It is a figure for demonstrating the formation method of the light absorption layer which concerns on one Example of this invention. It is a figure for demonstrating the formation method of the light absorption layer which concerns on one Example of this invention. It is a figure for demonstrating the formation method of the light absorption layer which concerns on the other Example of this invention. It is a figure for demonstrating the formation method of the light absorption layer which concerns on the other Example of this invention. FIG. 5 is a view for explaining polarizations of a first metal linear grating and a second metal linear grating in a display panel according to an embodiment of the present invention. FIG. 10 is a view for explaining polarizations of a first metal linear grating and a second metal linear grating in a display panel according to another embodiment of the present invention. It is sectional drawing of the display panel which concerns on the other Example of this invention. It is a figure for demonstrating the formation method of the additional polarizing layer which concerns on the other Example of this invention. It is a figure for demonstrating the formation method of the additional polarizing layer which concerns on the other Example of this invention. FIG. 6 is a cross-sectional view of a display panel according to still another embodiment of the present invention. It is a figure which shows the laminated constitution of the display panel based on the further another Example of this invention. It is sectional drawing of the display panel in FIG. It is sectional drawing which shows one Example of the color filter polarizing layer in FIG. It is sectional drawing which shows the other Example of the color filter polarizing layer in FIG. 1 is a schematic view of a display device according to an embodiment of the present invention. It is a control block diagram of the display apparatus which concerns on one Example of this invention. FIG. 6 is a diagram for explaining display of a 3D image on a display device according to an exemplary embodiment of the present invention. FIG. 27 is a diagram for explaining a method of manufacturing the display device shown in FIG. 26.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily carry out the embodiments. The present invention can be embodied in various forms and is not limited to the embodiments described herein. In order to clearly describe the present invention, portions not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

  FIG. 1 is a view showing a layer structure of a display panel according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the display panel in FIG.

  As shown in the figure, the display panel 1000 according to the present embodiment includes a first substrate 100 and a second substrate 200 that are arranged to face each other, and a color filter polarizing layer 300 that is sequentially arranged between them. , The pixel layer 400, the liquid crystal layer 500, and the polarizing layer 600. The display panel 1000 including the liquid crystal layer 500 is a portable terminal such as a home appliance such as a television or a monitor, a mobile phone, a PMP, a netbook, a notebook PC, an E-Book terminal, an exhibition and an advertisement. It can be used for a display device.

  A color filter polarizing layer 300 and a pixel layer 400 are sequentially formed on the first substrate 100, and a polarizing layer 600 is formed on the second substrate 200. As shown in FIG. 2, on the second substrate 200, a black matrix 200-1 is formed in a region corresponding to the TFT 411 of the first substrate 100, and a common electrode 200-that forms a voltage corresponding to the pixel electrode 412. 3 is formed. Between the first substrate 100 and the second substrate 200, a liquid crystal layer 500 whose alignment is adjusted by an applied voltage is inserted. The alignment method of the liquid crystal layer 500 is adjusted according to the operation mode of the display panel 1000 such as the TN method, the VA method, the PVA method, and the IPS method. In order to improve the light viewing angle, the subpixels may be divided or patterned, and a technique for evenly adjusting the refractive index of the liquid crystal may be used.

  The color filter polarizing layer 300 is formed on the first substrate 100, and the pixel layer 400 for displaying an image by adjusting the liquid crystal alignment is formed on the color filter polarizing layer 300. The color filter polarizing layer 300 includes first metal linear gratings 310 arranged at different pitches such that first polarized components of incident light are emitted as different color lights. The polarization layer 600 includes a second metal linear grating 610 that transmits light of a second polarization component different from the first polarization component, and changes only the polarization state of incident light. A planarizing layer 100-1 is formed on the first metal linear grating 310 and the second metal linear grating 610 to protect and planarize them. Details of the first metal linear grating 310 included in the color filter polarizing layer 300 and the second metal linear grating 610 included in the polarizing layer 600 will be described later.

  The pixel layer 400 includes a plurality of pixels (not shown) for changing the arrangement of liquid crystals included in the liquid crystal layer 500 in accordance with a control signal received from the outside. The pixel includes a plurality of sub-pixels 410. Consists of. The sub-pixel 410 according to the present embodiment means a minimum unit pixel to which video gradations corresponding to red, green, and blue are input. A plurality of sub-pixels 410 are collected to represent a single video signal. Is considered. The sub-pixel 410 includes a TFT 411 that is a switching element and a pixel electrode 412. The sub-pixel 410 includes a two-dimensional spatial concept as well as a physical concept including the TFT 411 and the pixel electrode 412.

  A gate electrode 411-1 is formed on the planarization layer 100-1 of the first substrate 100. The gate electrode 411-1 may be a metal single layer or multiple layers. The same layer as the gate electrode 411-1 is connected to the gate electrode, connected to a gate line (not shown) arranged in the horizontal direction of the display panel 1000, and a gate driver (not shown). A gate pad (not shown) for transmitting a drive signal to the gate line is further formed. A sustain electrode 413 for accumulating charges is formed in the same layer as the gate electrode 411-1.

  On the first substrate 100, a gate insulating film 411-2 made of silicon nitride (SiNx) or the like covers the gate electrode 411-1 and the sustain electrode 413.

  A semiconductor layer 411-3 made of a semiconductor such as amorphous silicon is formed on the gate insulating film 411-2 of the gate electrode 411-1. Silicide or n is formed on the semiconductor layer 411-3. A resistive contact layer 411-4 made of a material such as n + hydrogenated amorphous silicon doped with a high concentration of type impurities is formed. The resistive contact layer 411-4 is removed in a channel portion between a source electrode 411-5 and a drain electrode 411-6, which will be described later.

  Data wirings 411-5 and 411-6 are formed on the resistance contact layer 411-4 and the gate insulating film 411-2. Similarly, the data wirings 411-5 and 411-6 may be a single layer or multiple layers made of a metal layer. The data lines 411-5 and 411-6 are data lines (not shown) that are formed in the vertical direction and intersect the gate lines (not shown) to form the sub-pixels 410, and are branches of the data lines. The source electrode 411-5 extending to the upper part of the resistive contact layer 411-4 is separated from the source electrode 411-5, and is formed on the resistive contact layer 411-4 opposite to the source electrode 411-5. The drain electrode 411-6 is included.

  A protective film 411-7 is formed on the data wirings 411-5 and 411-6 and the semiconductor layer 411-3 which is not covered by these. Here, in order to ensure the reliability of the TFT 411, an inorganic insulating film such as silicon nitride may be further formed between the protective film 411-7 and the TFT 411.

  The pixel electrode 412 formed on the protective film 411-7 is mainly made of a transparent conductive material such as ITO (indium tin oxide) or IZO (indium zinc oxide). The pixel electrode 412 is electrically connected to the source electrode 411-5.

  On the planarization layer 100-1 of the second substrate 200, a black matrix 200-1 is formed in a region corresponding to the TFT 411 of the first substrate 100. The black matrix 200-1 mainly serves to separate the sub-pixels 410 from each other so that external light does not flow into the TFT 411. The black matrix 200-1 is usually made of a photosensitive organic material to which a black pigment is added. Carbon black or titanium oxide is used as the black pigment.

  Over the black matrix 200-1, an overcoat layer 200-2 for flattening the black matrix 200-1 and protecting the black matrix 200-1 is formed. An acrylic epoxy material is usually used for the overcoat layer 200-2.

  A common electrode 200-3 is formed on the overcoat layer 200-2. The common electrode 200-3 is made of a transparent conductive material such as ITO (indium tin oxide) or IZO (indium zinc oxide). The common electrode 200-3 applies a voltage directly to the liquid crystal layer 500 together with the pixel electrode 412 of the first substrate 100.

  FIG. 3 is a diagram illustrating the color filter polarizing layer 300 on the first substrate 100. FIGS. 4A and 4B are diagrams for explaining the first metal linear grating for each sub-pixel. FIG. 3 is a cross-sectional view of a polarizing layer 300. FIG. As illustrated, the first metal linear grating 310 has a bar shape arranged in a specific direction on the first substrate 100. The first metal linear grating 310 has a constant height H and width W and is periodically arranged. The period of the first metal linear grating 310, that is, the pitch, is adjusted separately according to the color of light to be emitted.

  When the pitch of the diffraction grating is adjusted to ½ or less of the wavelength of light, a diffracted wave is not formed, and only transmitted light and reflected light exist. As shown in the figure, the first polarization component perpendicular to the first metal linear grating 310 while passing through the slit-shaped first metal linear grating 310 in the incident light is transmitted through the first substrate 100, and the first metal. The second polarization component horizontal to the linear grating 310 becomes reflected light that is reflected again. That is, by passing through the color filter polarizing layer 300, incident light is polarized in a specific direction. Air is preferably formed between the first metal linear gratings 310.

  FIG. 4A is a diagram illustrating a pixel I constituting the pixel layer 400 and sub-pixels 410-R, 410-G, 410-B constituting the pixel I. The pixel I according to the present embodiment includes a red sub-pixel 410-R formed in a region where red light is emitted, a green sub-pixel 410-G formed in a region where green light is emitted, and a blue light emitted. A blue sub-pixel 410-B formed in the region. In the color filter polarizing layer 300 corresponding to the pixel layer 400, the first metal linear grating 310 having different pitches for each of the sub-pixels 410-R, 410-G, and 410-B is formed.

  FIG. 4B is a diagram illustrating the first metal linear grating 310 corresponding to the sub-pixels 410-R, 410-G, and 410-B. The first metal linear grating 310 includes a red metal linear grating 310-R formed in a region corresponding to the red sub-pixel 410-R and a green metal linear grating formed in a region corresponding to the green sub-pixel 410-G. 310-G includes a blue metal linear grating 310-B formed in a region corresponding to the blue sub-pixel 410-B.

  The red metal linear grating 310-R is arranged at a pitch smaller than ½ of the red light wavelength, and the green metal linear grating 310-G is a blue metal at a pitch smaller than ½ of the green light wavelength. The linear grating 310-B is arranged for each pitch smaller than ½ of the blue light wavelength. As described above, the wavelength of incident light can be adjusted by adjusting the pitch of the metal linear gratings 310-R, 310-G, and 310-B for each of the sub-pixels 410-R, 410-G, and 410-B. This makes it possible to emit light of different colors for each sub-pixel 410.

  The pitch of the red metal linear grating 310-R is about 330 to 390 nm, which is smaller than ½ of the red light wavelength, and the incident light has the first polarization component while passing through the red metal linear grating 310-R. It is split into red light. The pitch of the green metal linear grating 310-G is about 250 to 290 nm, which is smaller than ½ of the green light wavelength, and the incident light is split into green light having the first polarization component, and the blue metal linear grating 310-G. The pitch of B can be set to about 220 to 240 nm which is smaller than ½ of the blue light wavelength. The light passing through the blue metal linear grating 310-B is split into blue light having the first polarization component. That is, the pitch of the metal linear grating 310 decreases in the order of the red metal linear grating 310-R, the green metal linear grating 310-G, and the blue metal linear grating 310-B. The pitch of the first metal linear grating 310 may be adjusted according to the light wavelength of the color to be emitted from the display panel 1000. In addition to the red, green, and blue light, yellow, cyan, and magenta light is emitted. May be adjusted as required.

As illustrated in FIG. 5, the first metal linear grating 310 according to the present embodiment includes a first metal layer 311, an insulating layer 313, and a second metal layer 315 that are sequentially stacked. The first metal layer 311 and the second metal layer 315 can be made of a metal such as Al or Ag, and the height H thereof can be about 100 nm or less. Each of the first metal layer 311 and the second metal layer 315 according to the present embodiment may have a height of about 40 nm. The insulating layer 313 stacked between the first metal layer 311 and the second metal layer 315 can include a dielectric such as ZnSe or TiO ₂ and can be formed to have a thickness of about 150 nm or less. The height of the first metal linear grating 310 is larger than the width, and the ratio of the height to the width may be 2 to 4, preferably about 3. The width, height and pitch of the first metal linear grating 310, the height ratio to the width, and the pitch ratio to the width may be adjusted separately according to the material forming the first metal linear grating 310. That is, the optimum conditions may be set after the simulation for the light transmittance according to the type of metal and the height of the dielectric. In addition, the width, height and pitch of the first metal linear grating 310, the height ratio to the width, and the pitch ratio to the width are different according to the color of the emitted light, that is, corresponding to each sub-pixel 410. Can be adjusted.

  The principle of emitting light having a color from the metal layers 311 and 315 of the first metal linear grating 310 is based on plasmons in which free electrons in the metal collectively vibrate. When the metal becomes nano-sized, plasmon resonance characteristics appear on the metal surface due to vibration of free electrons. The surface plasmon resonance is a collective charge density oscillation that occurs on the surface of the metal thin film, and the surface plasmon wave generated by the surface plasmon resonance is adjacent to the metal and the surface plasmon wave. It is a surface electromagnetic wave that travels along the boundary surface with the dielectric material. A surface plasmon wave, which is a type of surface electromagnetic wave that travels along the interface between a metal and a dielectric, is a wave that is generated when a surface wave is generated because light of a specific wavelength incident on the metal surface is not totally reflected. It corresponds to. When the metal linear grating 310 having the structure of the first metal layer 311, the insulating layer 313, and the second metal layer 315 is arranged in a slit shape with a constant period, light of different colors is emitted according to the period. .

  The first metal linear grating 310 structure according to the present embodiment can filter individual colors over the entire visible light region with respect to white light. This is to realize a nano-resonator for quantum-plasmon-quantum conversion at a specific resonance wavelength. When compared with other color filtering methods, the absolute transmittance and the pass bandwidth are small. Improvements and compactness are possible. The filtered light is naturally polarized and can be directly applied to an LCD panel or the like without a separate polarizing layer.

  Accordingly, the display panel 1000 can generate polarized color light using the one color filter polarizing layer 300 instead of the polarizing film and the color filter that have been used. In addition, since the light that has not passed through the first substrate 100 is not absorbed and is reflected by the first metal layer 311 of the first metal linear grating 310, there is a high possibility that the light is re-reflected to the display panel 1000 again. That is, since the overall light efficiency is increased, it is possible to omit a conventional high brightness enhancement film (DBEF).

  FIG. 6 is a cross-sectional view of the polarizing layer on the second substrate shown in FIG. As shown in the figure, the polarizing layer 600 is composed of bar-shaped second metal linear gratings 610 arranged in a direction perpendicular to the first metal linear grating 310. That is, the second metal linear grating 610 transmits the second polarization component perpendicular to the first polarization component. Since the second metal linear grating 610 only needs to pass the second polarization component, the second metal linear grating 610 has a pitch capable of transmitting light of all incident wavelengths. In particular, it may be formed smaller than half of the blue light wavelength. The height of the second metal linear grating 610 according to the present embodiment is about 150 nm and the pitch is 100 to 150 nm. The height ratio with respect to the width of the second metal linear grating 610 can also be adjusted to 2-4.

The second metal linear grating 610 includes a metal layer 611 and a hard mask 612 formed on the metal layer 611. The metal layer 611 constituting the first metal linear grating 310 may be made of the same metal, or may be made of a different metal. That is, the metal layer 611 may be made of a metal such as Al, Ag, and Cu, and may include a rigid alloy such as MoW. Alternatively, the metal layer 611 may be made of a conductive polymer and may contain a conductive polymer. Hard mask 612 protects the metal layer 611, plays a role of improving the polarization performance of the metal layer 611 can be composed of a dielectric such as SiO _2.

  According to another embodiment, the first metal linear grating 310 and the second metal linear grating 610 may have the same polarization direction. Since the state of the liquid crystal is adjusted according to the orientation direction, and light blocking and transmission can be set depending on whether a voltage is applied or not, the polarization directions of the first metal linear grating 310 and the second metal linear grating 610 are perpendicular to each other. There is no need. This may be adjusted according to the alignment direction of the liquid crystal.

  7 to 9 are diagrams illustrating a color filter polarizing layer and a polarizing layer of a display panel according to another embodiment of the present invention. The display panel 1000 of FIGS. 7 to 9 includes a first metal linear grating 310 and a second metal linear grating 610 that are different from each other in materials, in particular, metal materials contained therein. The first metal linear grating 310 and the second metal linear grating 610 may include metals having different reflectivities or stiffnesses.

  The display panel 1000 of FIG. 7 includes a first metal linear grating 310 including a metal having a high reflectivity and a second metal linear grating 610 including a metal having a low reflectivity. When light enters from the lower part of the first substrate 100 and is emitted from the second substrate 200, only the first polarized light component enters the liquid crystal layer 500, and the second polarized light component reflects from the first substrate 100. Is done. In general, a backlight assembly (not shown) that provides light from the bottom of the display panel 1000 includes a reflector that reflects the light reflected from the first substrate 100 back to the display panel 1000 again. The metal contained in the first metal linear grating 310 allows more light to be reused by the first substrate 100 again through the reflector, that is, more light of the second polarization component is incident on the reflector. As such, a high reflectance is preferable. For example, the first metal linear grating 310 may include a highly reflective metal such as Al, Ag, and Cu. As described above, when the reflectance of the first metal linear grating 310 is increased due to the use of the high reflectance metal, a high brightness enhanced film (Dual Brightness Enhanced Film: DBEF) that has been conventionally used in a display panel may be omitted. Thereby, the manufacturing cost of the display panel 1000 can be reduced, and the display device including the display panel 1000 can be made thinner and lighter.

  On the other hand, the second metal linear grating 610 preferably includes a metal having a low reflectivity so as to suppress reflection of external light and absorb light. The second metal linear grating 610 may be subjected to an additional process for reducing the reflectance of the metal, and may include or be composed of carbon and chromium oxide for light absorption.

  On the other hand, the second metal linear grating 610 according to another embodiment may include a metal having high rigidity in consideration of a large amount of contact with the outside. For example, the second metal linear grid 610 can include an alloy such as MoW and can include a conductive polymer that can play substantially the same role as the metal layer.

  The display panel 1000 of FIG. 8 further includes a light absorption layer 330 that is formed on the first metal linear grating 310 included in the first substrate 100 and absorbs light. When external light is incident on the display panel 1000 and re-reflected, the contrast ratio of the display panel 1000 may decrease, leading to a problem that the image quality of the image is deteriorated due to light reflection. In order to prevent this, the first substrate 100 according to the present embodiment includes a light absorption layer 330 for absorbing undesired external light on the first metal linear grating 310.

  The light absorption layer 330 may include a metal having low reflectivity, and may include or be composed of carbon and chromium oxide for light absorption.

  According to another embodiment, the light absorption layer 330 may be formed under the second metal linear grating 610 of the second substrate 200 instead of the first substrate 100. That is, light incident from the outside may be blocked from entering the display panel 1000 by the light absorption layer formed below the second metal linear grating 610.

  FIG. 9 shows the first light absorption layer 331 formed on the first metal linear grating 300 of the first substrate 100 and the second light absorption layer 631 formed on the second substrate 200. In order to reduce problems caused by reflection of external light other than light emitted from a backlight assembly (not shown), the display panel 1000 according to the present embodiment includes a light absorption layer 331 and a light absorption layer 331 on both the substrates 100 and 200. 631 is included. The light absorption layers 331 and 631 can be made of carbon or chromium oxide. However, the present invention is not limited to this, and any material that can absorb light can be used.

  Such first light absorption layer 331 and second light absorption layer 631 may be formed on only one of the substrates as in the embodiment of FIG. 8, or may be omitted.

FIG. 10 is a cross-sectional view of another color filter polarizing layer according to an embodiment of the present invention. As shown in the drawing, the color filter polarizing layer 300 may further include a dielectric layer 320 that is stacked under the first metal linear grating 310. The dielectric layer 320 may be formed of a material similar to that of the first substrate 100 and may include MgF ₂ . The dielectric layer 320 may be in the form of a film bonded on the first substrate 100, may be replaced with the first substrate 100, or may be omitted.

  11A to 11D are views for explaining a method of manufacturing the first substrate in the display panel according to the embodiment of the present invention.

  As shown in FIG. 11A, in order to form the color filter polarizing layer 300 on the first substrate 100, a first metal layer 311, an insulating layer 313, and a second metal layer 315 are sequentially stacked by a sputtering method or the like.

  Next, as shown in FIG. 11B, a normal patterning procedure, that is, a photoresist is deposited, and then exposed using a mask to form a first metal linear grating 310 through development and etching. That is, in this embodiment, the first metal layer 311, the insulating layer 313, and the second metal layer 315 are not formed separately, but the first metal alignment is performed in one patterning process after the three layers are sequentially stacked. A lattice 310 is formed. Any known or non-known patterning technique may be used to form the first metal linear grating 310.

  After the formation of the first metal linear grating 310, as shown in FIG. 11C, the planarization layer 100-1 is formed to protect the first metal linear grating 310 and planarize the surface. The planarization layer 100-1 can be formed of silicon nitride (SiNx).

  After that, as illustrated in FIG. 11D, the TFT 411 and the pixel electrode 412 that is electrically connected to the TFT 411 are formed on the planarization layer 100-1. The pixel electrode 412 may be formed by patterning after depositing metal by sputtering.

  12A to 12D are views for explaining a method of manufacturing the second substrate in the display panel according to an embodiment of the present invention.

  The polarizing layer 600 of the second substrate 200 can be formed in a manner similar to the color filter polarizing layer 300 of the first substrate 100. That is, as shown in FIG. 12A, a metal layer 611 and a hard mask 612 for protecting the metal layer 611 are stacked on the second substrate 200.

  Next, the second metal linear grating 610 is formed by a single photolithography process or etching process.

  After the formation of the second metal linear grating 610, as shown in FIG. 12C, the planarizing layer 100-1 is formed to protect the second metal linear grating 610 and planarize the surface.

  As shown in FIG. 12D, a black matrix 200-1 is formed in a region corresponding to the TFT 411 on the flattening layer 100-1, and the overcoat layer 200-2 is formed to flatten the black matrix 200-1. Form. Then, the common electrode 200-3 made of a transparent conductive material is formed by a sputtering method.

  After the substrates 100 and 200 of FIGS. 12D and 11D are bonded together, liquid crystal is injected to complete the display panel 1000.

  13A and 13B are diagrams for explaining a method for forming a light absorption layer according to an embodiment of the present invention.

  FIG. 13A shows a structure in which a first metal layer 311, an insulating layer 313, a second metal layer 315, and a light absorption layer 330 are sequentially stacked on the first substrate 100.

  Next, as shown in FIG. 13B, the first metal linear grating 310 and the light absorption layer 330 are formed by a single patterning process.

  14A and 14B are views for explaining a method of forming a light absorption layer according to another embodiment of the present invention.

  In this embodiment, the light absorption layer 330 is formed below the second metal linear grating 610. In FIG. 14A, a light absorption layer 330, a metal layer 611, and a hard mask 612 are sequentially stacked on the second substrate 200.

  Next, as shown in FIG. 14B, the second metal linear grating 610 and the light absorption layer 330 are formed through a single patterning process.

  FIG. 15 is a view for explaining the polarization of the first metal linear grating and the second metal linear grating in the display panel according to an embodiment of the present invention. The hatching lines in FIG. 15 simply represent the arrangement of the first metal linear grating 310 formed in the color filter polarizing layer 300 and the second metal linear grating 610 formed in the polarizing layer 600. The polarization component of the transmitted light differs depending on. For example, if the horizontal line transmits the first polarization component of light, the vertical line transmits the second polarization component. The display panel 1000 according to the present embodiment is useful for a display device that displays a three-dimensional image, particularly, a display device that displays a three-dimensional image in a passive manner. When displaying a three-dimensional image in a passive manner, the user can view the image through polarized glasses whose polarization states are opposite to each other.

  As illustrated, the color filter polarizing layer 300 is partitioned into a plurality of rows, and the first metal linear grating 310 includes a first polarizing linear grating P-1 that transmits the first polarizing component, and a second polarizing component. And a second polarization linear grating P-2 that transmits the light. The first polarization linear grating P-1 is alternately formed in odd rows, and the second polarization linear grating P-2 is alternately formed in even rows. Similarly, the second metal linear grating 610 includes a first polarization linear grating P-1 that transmits the first polarization component and a second polarization linear grating P-2 that transmits the second polarization component. Contrary to the one metal linear grating 310, that is, the first polarization linear grating P-1 is alternately formed in even rows and the second polarization linear grating P-2 is alternately formed in odd rows.

  In other words, the second polarization of the second metal linear grating 610 is such that the first polarization linear grating P-1 of the second metal linear grating 610 corresponds to the second polarization linear grating P-2 of the first metal linear grating 310. The linear grating P-2 is alternately formed so as to correspond to the first polarization linear grating P-1 of the first metal linear grating 310.

  When the video signal corresponding to the left eye image is applied to the odd rows and the video signal corresponding to the right eye image is alternately applied to the even rows, the left eye image is the first polarization linear grating P of the first metal linear grating 310. −1 and the second polarization linear grating of the second metal linear grating 610 and displayed on the display panel 1000, the right eye image is the second polarization linear grating P-2 of the first metal linear grating 310 and the second metal linear grating 610. Is displayed on the display panel 1000 through the first polarization linear grating P-1. Even if left-eye video and right-eye video are displayed on the display panel 1000 at the same time, the user visually recognizes different videos with both eyes using polarized glasses that can only see either one of the polarization components, and can view the 3D video. it can.

  The period in which the first polarization linear grating P-1 and the second polarization linear grating P-2 are repeated may be one pixel row or a plurality of pixel rows.

  According to another embodiment, the color filter polarizing layer 300 may be partitioned into a plurality of columns, and the first polarization linear grating P-1 and the second polarization linear grating P-2 may be alternately formed for each column. Good.

  FIG. 16 is a view for explaining the polarization of the first metal linear grating and the second metal linear grating of the display panel according to another embodiment of the present invention. As illustrated, the color filter polarizing layer 300 according to the present embodiment is partitioned into a checkerboard shape, and the first polarization linear grating P-1 and the second polarization linear grating P-2 are adjacent to the checkerboard. It is formed alternately for each cell. Of course, the first polarization linear grating P-1 of the first metal linear grating 310 corresponds to the second polarization linear grating P-2 of the second metal linear grating 610, and the second polarization linear grating of the first metal linear grating 310. P-2 is formed to correspond to the first polarization linear grating P-1 of the second metal linear grating 610.

  In this case, the left-eye image and the right-eye image can be displayed alternately for each adjacent cell of the checkerboard, and the user can use the same polarizing glasses as in the above-described embodiment to perform the three-dimensional operation. You can watch the video. Although an image with a resolution substantially lower than the resolution of the display panel 1000 is displayed, according to the present embodiment, the left eye image and the right eye image are repeated in a grid pattern, so that the user feels a decrease in resolution. Absent. That is, the user can view a video with a higher resolution than in the embodiment of FIG.

  A cell of the checkerboard may correspond to an individual pixel of the pixel layer 400 and may include a plurality of pixels.

  The display panel 1000 of FIGS. 15 and 16 may further include a polarizer for converting linearly polarized light transmitted through the polarizing layer 600 into circularly polarized light. The display panel 1000 preferably emits circularly polarized light so that a viewing angle is secured and the user can view a three-dimensional image from any direction.

  FIG. 17 is a cross-sectional view of a display panel according to another embodiment of the present invention.

  The display panel 1000 according to the present embodiment further includes an additional polarizing layer 800 that transmits the first polarization component below the color filter polarizing layer 300. The additional polarizing layer 800 may be made of a metal made of substantially the same material as the second metal linear grating 610 of the polarizing layer 600 and is arranged in the same direction as the first metal linear grating 310. 810 included. Since the third metal linear grating 810 is arranged in the same direction as the first metal linear grating 310, it transmits the first polarization component. The light of the first polarization component transmitted through the additional polarizing layer 800 is emitted as red, blue, and green color light while passing through the color filter polarizing layer 300.

  The metal layer included in the third metal linear grating 810 can include a metal having high reflectivity, for example, at least one of Al, Ag, and Cu, and light that can absorb external light on the metal layer. An absorbent layer can be further included.

  18A and 18B are views for explaining a method of forming an additional polarizing layer according to an embodiment of the present invention.

  As shown in FIG. 18A, first, an additional polarizing layer 800 including a third metal linear grating 810 is formed on the first substrate 100, and a planarizing layer 100-1 is formed on the additional polarizing layer 800.

  Next, as shown in FIG. 18B, the color filter polarizing layer 300 and the pixel layer 400 are sequentially formed. After the second substrate 200 as shown in FIG. 12D is formed, the display panel 1000 including the additional polarizing layer 800, the color filter polarizing layer 300, and the polarizing layer 600 is completed by combining with FIG. 18B.

  FIG. 19 is a cross-sectional view of a display panel according to still another embodiment of the present invention. As illustrated, the display panel 1000 according to the present embodiment includes a polarizing layer 600 formed on the first substrate 100 and a color filter polarizing layer 300 formed on the second substrate 200. In other words, the color filter polarizing layer 300 can be arranged not on the pixel layer 400 but on the substrate on which the black matrix 200-1 is formed. When light enters from the lower part of the first substrate 100, the light of the second polarization component transmitted through the polarizing layer 600 is transmitted through the liquid crystal layer 500 and then passes through the color filter polarizing layer 300, and the first polarization component differs. It is emitted as colored light. Each of the color filter polarizing layer 300 and the polarizing layer 600 may be selectively formed on the same or different substrate as the pixel layer 400. Of course, the light may be incident on the second substrate 200 and emitted from the first substrate 100.

  20 is a view showing a layer structure of a display panel according to still another embodiment of the present invention, and FIG. 21 is a cross-sectional view of the display panel of FIG.

  As shown in the figure, the display panel 1000 according to the present embodiment includes a first substrate 100 and a second substrate 200 that are arranged to face each other, and a color filter polarizing layer that is sequentially arranged between the two substrates. 300, the pixel layer 400, the liquid crystal layer 500, and the polarizing film 600-1 arranged on the outer surface of the second substrate 200.

  The polarizing film 600-1 transmits light of a second polarization component different from the first polarization component, and replaces the polarization layer 600 included in the above embodiment.

  According to another embodiment, the polarizing film 600-1 may be attached to the outer surface of the first substrate 100, and the color filter polarizing layer 300 may be formed on the second substrate 200. In other words, the color filter polarizing layer 300 can be arranged not on the pixel layer 400 but on the substrate on which the black matrix 200-1 is formed. When light enters from the lower part of the first substrate 100, the second polarized light component transmitted through the polarizing film 600-1 passes through the liquid crystal layer 500 and then passes through the color filter polarizing layer 300. The light is emitted as different colors. Each of the color filter polarizing layer 300 and the polarizing film 600-1 can be selectively formed on the same or different substrate as the pixel layer 400. Of course, the light may be incident from the second substrate 200 and emitted from the first substrate 100.

  FIG. 22 is a cross-sectional view showing an example of the color filter polarizing layer of FIG. As illustrated, the display panel 1000 further includes a light absorption layer 330 that is formed on the metal linear grating 310 included in the first substrate 100 and absorbs light. When external light is incident on the display panel 1000 and re-reflected, the contrast ratio of the display panel 1000 is lowered, which may lead to a problem that the image quality of the image is lowered due to the light reflection. In order to prevent this, the first substrate 100 according to the present embodiment includes a light absorption layer 330 for absorbing undesired external light on the metal linear grating 310.

  The light absorption layer 330 may include a metal having low reflectivity, and may include or be composed of carbon and chromium oxide for light absorption.

  FIG. 23 is a cross-sectional view showing another embodiment of the color filter polarizing layer of FIG. In the figure, the light absorption layer 330-1 is formed not on the first substrate 100 but on the second substrate 200. That is, light incident from the outside can be blocked by the light absorption layer 330-1 and prevented from flowing into the display panel 1000.

  As shown in FIGS. 22 and 23, the light absorption layers 330 and 330-1 have the first substrate 100 or the first substrate 100 depending on whether light is incident on the first substrate 100 or the second substrate 200 of the display panel 1000. It may be selectively formed on either one of the two substrates 200.

In another embodiment, the color filter polarizing layer 300 may further include a dielectric layer (not shown) stacked under the first metal layer 311. This dielectric layer is formed of a material similar to that of the first substrate 100 and may include MgF ₂ . The dielectric layer may be in the form of a film bonded onto the first substrate 100, and the dielectric layer may replace the first substrate 100 or may be omitted.

  The display panel 1000 according to the embodiment may further include a printed circuit board on which a gate driving IC and a data chip film package (not shown) are mounted. In addition, a compensation film (not shown) provided outside the first substrate 100 and the second substrate 200 may be further included.

  24 is a schematic diagram of a display apparatus according to an embodiment of the present invention, and FIG. 25 is a control block diagram of the display apparatus of FIG. As illustrated, the display device 1 includes a display panel 1000, a backlight assembly 2000, storage containers 3100, 3200, 3300 for storing them, and an image providing unit 4000.

  The display panel 1000 displays a first substrate 100, a second substrate 200 facing the first substrate 100, a liquid crystal layer (not shown) sandwiched between the first substrate 100 and the second substrate 200, and a video signal. Includes a panel driver 900 that drives the pixel layer 400. The panel driver 900 may include a gate driver IC (integrated circuit) 910, a data chip film package 920, and a printed circuit board 930.

  On the first substrate 100 and the second substrate 200, the pixel layer 400, the color filter polarizing layer 300, the polarizing layer 600, the black matrix 200-1, the common electrode 200-3, and the like described in the above embodiments are formed. ing. The color filter polarizing layer 300 polarizes light incident on the first substrate 100, and the polarizing layer 600 polarizes light emitted from the display panel 1000.

  The display panel 1000 receives light from the outside and displays an image by controlling the amount of light passing through the liquid crystal layer sandwiched between the first substrate 100 and the second substrate 200.

  The gate driving IC 910 is integrated on the first substrate 100 and can be connected to each gate line (not shown) formed on the first substrate 100. The data chip film package 920 can be connected to each data line (not shown) formed on the first substrate 100. Here, the data chip film package 920 may include a wiring pattern in which a semiconductor chip is formed on a base film and a TAB tape (TAB tape) bonded by TAB (Tape Automated Bonding) technology. As such a chip film package, for example, a tape carrier package (Tape Carrier Package; hereinafter referred to as “TCP”) or a chip-on film (hereinafter referred to as “COF”) can be used. .

  On the other hand, on the printed circuit board 930, a driving component for inputting a gate driving signal to the gate driving IC 910 and inputting a data driving signal to the data chip film package 920 can be mounted.

  The backlight assembly 2000 includes a light guide plate 2200 that guides light, first and second light sources 2300a and 2300b that provide light, a reflection sheet 2400 disposed under the light guide plate 2200, and one or more optical sheets 2100. And can be included.

  The light guide plate 2200 serves to guide light supplied to the display panel 1000. The light guide plate 2200 is formed of a plastic transparent material panel such as acrylic, and transmits light generated from the first light source 2300a and the second light source 2300b to the display panel 1000 mounted on the light guide plate 2200. Dodge. Various patterns for switching the traveling direction of the light incident on the light guide plate 2200 to the display panel 1000 may be formed on the back surface of the light guide plate 2200.

  As illustrated, the first light source 2300a and the second light source 2300b may include LEDs that are point light sources. The light source is not limited to the LED, and may include a linear light source such as a cold cathode light source (CCFL) or a hot cathode light source (HCFL). The first light source 2300a and the second light source 2300b can be electrically connected to an inverter (not shown) that supplies power to receive power.

  The reflection sheet 2400 is provided on the lower surface of the light guide plate 2200 and reflects light emitted to the lower portion of the light guide plate 2200 upward. Specifically, by the minute dot pattern formed on the back surface of the light guide plate 2200, the light that has not been reflected is reflected again toward the exit surface of the light guide plate 2200, thereby causing a loss of light incident on the display panel 1000. And the uniformity of light transmitted through the exit surface of the light guide plate 2200 can be improved.

  The one or more optical sheets 2100 are provided on the upper surface of the light guide plate 2200 and serve to diffuse and collect light transmitted from the light guide plate 2200. The optical sheet 2100 can include a diffusion sheet, a prism sheet, a protective sheet, and the like. The diffusion sheet may be disposed between the light guide plate 2200 and the prism sheet. By dispersing the light incident from the light guide plate 2200, the light can be prevented from being partially concentrated. In the prism sheet, triangular prisms may be formed in a fixed arrangement on the upper surface, and the prism sheet can play a role of collecting light diffused from the diffusion sheet in a direction perpendicular to the display panel 1000. The protective sheet is preferably formed on the prism sheet, and can protect the surface of the prism sheet and diffuse light to make the light distribution uniform.

  The storage containers may include a lower storage container 3100, an intermediate storage container 3200, and an upper storage container 3300. The lower storage container 3100 can store therein the reflection sheet 2400, the first and second light sources 2300a and 2300b, the light guide plate 2200, and one or more optical sheets 2100. The lower storage container 3100 may be formed of a metal material in order to ensure strength against external impact and grounding ability.

  The video providing unit 4000 is connected to the display panel 1000 to provide a video signal. Although not shown in FIG. 24, the video providing unit 4000 may be arranged in the reflective sheet 2400 and the lower storage container 3100. May be arranged.

  FIG. 26 is a view for explaining display of a three-dimensional image in the display apparatus according to an embodiment of the present invention. FIG. 26 shows a color filter polarizing layer 300 and a polarizing layer 600 that are formed in a checkerboard shape, and polarizing glasses 5000. The display apparatus according to the present embodiment includes a display panel 1000 and polarized glasses 5000 that allow a left-eye image and a right-eye image displayed on the display panel 1000 to be visually recognized.

  The polarizing glasses 5000 include a left eye lens 5100 and a right eye lens 5200 that transmit polarization components that are mutually perpendicular, that is, a first polarization component and a second polarization component, respectively. The left eye lens 5100 and the right eye lens 5200 transmit light having different polarization states. Accordingly, light that passes through the left eye lens 5100 cannot pass through the right eye lens 5200, and light that passes through the right eye lens 5200 cannot pass through the left eye lens 5100.

  The image providing unit 4000 according to the present embodiment displays the left eye image data and the right eye on the sub-pixel 410 corresponding to a cell so that the left eye image and the right eye image are alternately displayed for each adjacent cell on the checkerboard. Apply video data. The left-eye image and the right-eye image can be transmitted through only one of both lenses 5100 and 5200 according to the polarization state. Therefore, the user recognizes a three-dimensional image by combining different left-eye images and right-eye images that can be viewed with both eyes.

  The outer surface of the second substrate 200 from which light is emitted may include a polarizer that converts linearly polarized light into circularly polarized light, and the polarizing glasses 5000 similarly include a circularly polarized light polarizer that can transmit circularly polarized light. be able to.

  In the display apparatus according to the present embodiment, the first metal linear grating 310 and the second metal linear grating 610 are formed in a checkerboard shape inside the display panel 1000, so that a passive three-dimensional image can be easily realized. it can. When displaying a three-dimensional image in a passive manner, the left-eye image and the right-eye image must be spatially divided. However, when a polarizing film is used, there is a problem that the resolution of the image is lowered. Since the display panel 1000 according to the present embodiment can change the polarization state to a checkerboard form, the display panel 1000 can provide a high-quality three-dimensional image without reducing the resolution felt by the user.

  The display panel 1000 included in the display apparatus according to the present embodiment may display the left eye image and the right eye image in a time-sharing manner corresponding to the shutter glass type glasses. Further, the polarization state of the display panel 1000 may be changed in units of rows or columns as shown in FIG.

  FIG. 27 is a diagram for explaining a method of manufacturing the display device of FIG.

  First, on the first substrate 100, a first polarization linear grating P-1 that transmits the first polarization component and a second polarization linear grating P-2 that transmits the second polarization component are formed in a checkerboard shape. The color filter polarizing layer 300 is formed (S10). The first metal linear gratings 310 of the color filter polarizing layer 300 are arranged at different pitches so as to emit light of different colors such as red, green, and blue. Corresponding to the sub-pixel 410 that emits red light, a red metal linear grating arranged at a pitch smaller than ½ of the red light wavelength is formed, and corresponding to the sub-pixel 410 that emits green light. A green metal linear grating arranged at a pitch smaller than ½ of the green light wavelength is formed, and the pitch smaller than ½ of the blue light wavelength corresponding to the sub-pixel 410 that emits blue light. Blue metal linear grids are formed which are arranged one by one. The first metal linear grating 310 is formed through a patterning process in which a first metal layer 311, an insulating layer 313, and a second metal layer 315 are sequentially stacked.

  A light absorbing layer 330 may be further formed on the first metal linear grating 310 to absorb light incident from the outside instead of the backlight assembly 2000.

  Thereafter, on the second substrate 200, the first polarization linear grating P-1 is made to correspond to the second polarization linear grating P-2 of the color filter polarization layer 300, and the second polarization linear grating P-2 is made to correspond to the color filter polarization layer 300. A polarizing layer 600 corresponding to the first polarization linear grating P-1 is formed (S20).

  A pixel layer 400 including a plurality of sub-pixels 410 is formed on one of the color filter polarizing layer 300 and the polarizing layer 600 (S30). When the pixel layer 400 is formed on the same substrate as the color filter polarizing layer 300, the pixel layer 400 may be formed before the polarizing layer 600 is formed, and the pixel layer 400 is formed on the same substrate as the polarizing layer 600. In this case, the pixel layer 400 may be formed before the color filter polarizing layer 300 is formed.

  Next, the first substrate 100 and the second substrate 200 are bonded together, and liquid crystal is injected (S40).

  An image providing unit 4000 that can apply image data to the sub-pixel 410 and a panel driving unit 900 that drives the pixel layer 400 are connected to a substrate, and left eye images and right eye images are alternately displayed in adjacent cells on the checkerboard. As described above, the left eye image data and the right eye image data are applied to the sub-pixel 410. The user can view a stereoscopic image by combining the left eye image and the right eye image viewed through the polarizing glasses 5000.

  Although several embodiments of the present invention have been shown and described above, those skilled in the art having ordinary knowledge in the technical field to which the present invention pertains can be modified without departing from the principle and spirit of the present invention. Can be understood. Accordingly, the scope of the invention should be determined by the appended claims and their equivalents.

1000 Display panel 2000 Backlight assembly 100 First substrate 200 Second substrate 300 Color filter polarizing layer 400 Pixel layer 500 Liquid crystal layer 600 Polarizing layer 600-1 Polarizing film 800 Additional polarizing layer 900 Panel drive unit 4000 Video providing unit

Claims (9)

A display panel including a liquid crystal layer,
A first substrate and a second substrate disposed opposite to each other;
Formed on one surface between the first substrate and the second substrate and arranged at different pitches so that the first polarized component of the incident light is emitted as light of different colors A color filter polarizing layer including a first metal linear grating, wherein the first metal linear grating includes a first metal layer, an insulating layer, and a second metal layer, which are stacked in the order in which incident light passes. A color filter polarizing layer, wherein the first metal layer, the insulating layer, and the second metal layer form an optical resonator;
A polarizing layer including a second metal linear grating formed on the other surface between the first substrate and the second substrate;
Including
Of the first metal linear grating and the second metal linear grating, the reflectance of the metal linear grating arranged on the substrate on which light is incident is larger than the reflectance of the other metal linear gratings,
Among the first metal linear grating and the second metal linear grating, the rigidity of the metal linear grating arranged on the substrate from which light is emitted is greater than the rigidity of the other metal linear gratings,
Among the first metal linear grating and the second metal linear grating, the metal linear grating arranged on the substrate from which light is emitted has a light absorption layer that blocks light incident on the display panel from the outside. display panel according to claim Rukoto formed.   The display panel according to claim 1, wherein materials of the metal included in the first metal linear lattice and the metal included in the second metal linear lattice are different from each other.   The substrate according to claim 1, wherein the light incident substrate of the first substrate and the second substrate further includes a light absorption layer formed on the metal linear grating and absorbing light. Display panel.   The substrate according to claim 1, wherein the first substrate and the second substrate, wherein the light is emitted, further includes a light absorption layer that is formed under the metal linear grating and absorbs light. Display panel. A pixel layer formed on any one surface between the first substrate and the second substrate, wherein a pixel including a plurality of sub-pixels is formed;
The display panel according to claim 1, wherein the pitch of the first metal linear grating is different for each of at least three sub-pixels. The first metal linear grating includes a red metal linear grating, a green metal linear grating, and a blue metal linear grating;
The red metal linear grating is arranged at a pitch smaller than ½ of the red light wavelength, and the green metal linear grating is arranged at a pitch smaller than ½ of the green light wavelength, The display panel according to claim 1, wherein the blue metal linear gratings are arranged at a pitch smaller than ½ of a blue light wavelength.   The display panel of claim 1, wherein a height of the first metal linear grating is greater than a width.   The display panel of claim 1, wherein the color filter polarizing layer further comprises a dielectric layer stacked under the first metal linear grating. A first polarization linear grating that transmits the first polarization component and a second polarization component that transmits the first polarization component, which are in the form of a checkerboard, are formed on the surface of the first substrate located between the first substrate and the second substrate. comprising the steps of forming a color filter polarizing layer containing 2 polarization beam-shaped grid, the first polarized light forms rated child formed on the surface of the first substrate were laminated in the order in which incident light passes, the first Forming a color filter polarizing layer including a metal layer, an insulating layer, and a second metal layer, wherein the first metal layer, the insulating layer, and the second metal layer form an optical resonator;
A first polarization linear grating that transmits a first polarization component, which is in the form of a checkerboard, and a second polarization component are transmitted through a surface of the second substrate located between the first substrate and the second substrate. Forming a polarizing layer comprising a second polarizing linear grating
Forming a pixel layer including a plurality of sub-pixels in any one of the color filter polarizing layer and the polarizing layer;
Bonding the first substrate and the second substrate and injecting liquid crystal into a space formed between the first substrate and the second substrate;
Only including,
Of the first metal linear grating and the second metal linear grating, the reflectance of the metal linear grating arranged on the substrate on which light is incident is larger than the reflectance of the other metal linear gratings,
Among the first metal linear grating and the second metal linear grating, the rigidity of the metal linear grating arranged on the substrate from which light is emitted is greater than the rigidity of the other metal linear gratings,
Among the first metal linear grating and the second metal linear grating, the metal linear grating arranged on the substrate from which light is emitted has a light absorption layer that blocks light incident on the display panel from the outside. A method of manufacturing a display device, comprising: forming a display device.

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