JP2006338946A - Display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make pixels into a top emission type, while arranging a desiccant. <P>SOLUTION: Color filters 24 for every pixel are formed at a sealing substrate 20 by forming the pixel on an EL substrate 10. Then, a transparent PLB desiccant layer 26 is formed, in a space below these color filters 24. This PLB desiccant layer is a layer in which a moisture-permeable PLB and a transparent desiccant are mixed with each other. Thus, without shielding light from the pixels, regardless of containing the desiccant, the pixels can be made into the top emission type. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display panel such as an organic EL (Electro Luminescence) display panel, and particularly to moisture prevention thereof.

  As a thin flat display panel, a plasma display (PDP), a liquid crystal display (LCD), and the like are prevalent, and an organic EL panel is also put into practical use.

  In this organic EL panel, an organic substance is used as a light emitting material for each pixel. If this organic material contains moisture, its lifetime is shortened. Therefore, it is necessary to reduce the moisture in the space where each pixel exists as much as possible. Therefore, in correspondence with an EL substrate (pixel substrate) in which display pixels including EL elements are formed in a matrix, the sealing substrates are opposed to each other with a predetermined interval, and the peripheral portions of these substrates are covered with a resin sealant. It is hermetically sealed to prevent moisture from entering the interior, and a desiccant (desiccant) is accommodated in the internal space to remove moisture.

  An EL panel in which such a desiccant is arranged is described in Patent Document 1 and the like.

  On the other hand, the organic EL panel includes a bottom emission that emits light from the EL substrate side and a top emission that emits light from the sealing substrate side. In the EL substrate, after the pixel circuit of each pixel is formed, an EL element is often formed thereon, and in the case of bottom emission, the light emitting region is limited to a region where the pixel circuit is not formed, and the light emitting region is narrow. However, Top Emission eliminates such a problem.

JP 2004-186048 A

  However, in the case of top emission, since the emitted light passes through the sealing substrate, there is a problem that the desiccant cannot be disposed in this portion.

  According to the present invention, a display substrate in which display pixels are formed in a matrix and a pixel substrate having a peripheral region surrounding the display region are disposed opposite to the pixel substrate at a predetermined interval, and the peripheral portion is the periphery of the pixel substrate. A display panel including a sealing substrate that is bonded to a portion and seals an upper space of a pixel substrate, and includes a transparent desiccant including a hygroscopic desiccant in a space between the pixel substrate and the sealing substrate A display panel, wherein a layer is disposed and light emitted from the display pixel is emitted through the desiccant-containing layer and a sealing substrate.

  In addition, it is preferable that a plurality of color filters that transmit light from the display pixels are provided on a surface of the sealing substrate on the pixel substrate side.

  The desiccant-containing layer preferably contains both a moisture-permeable organic material and a hygroscopic desiccant.

  Further, it is preferable that a support material that is made of the same base material as the color filter layer and supports the side surface of the desiccant-containing layer is provided on the surface of the sealing substrate on the pixel substrate side.

  Further, it is preferable that the plurality of color filters are covered with the desiccant-containing layer.

  In addition, it is preferable that the plurality of color filters are covered with a planarization layer that planarizes a surface, and the desiccant-containing layer is filled between the planarization layer and the surface of the pixel substrate. .

  In addition, it is preferable that a moisture blocking layer that blocks moisture permeation is formed between the planarization layer and the desiccant-containing layer.

  The pixel substrate includes an electrode that covers the entire display area, and a plurality of color filters are formed on the electrode, and the desiccant-containing layer covers the color filter and seals the color filter. It is preferable that it is formed between the stationary substrate.

  Moreover, it is preferable to further include a moisture-permeable organic material layer laminated on the desiccant-containing layer.

  The moisture-permeable organic material layer is preferably disposed on the pixel substrate side of the desiccant-containing layer.

  The moisture-permeable organic material layer is preferably disposed on the sealing substrate side of the desiccant-containing layer.

  The pixel substrate has an electrode that covers the entire display area, and the desiccant-containing layer, a plurality of color filters, and a moisture-permeable organic material layer are formed in this order on the electrode. Is preferred.

  The pixel substrate includes an electrode that covers the entire display area, and a plurality of color filters, the desiccant-containing layer, and a moisture-permeable organic material layer are provided between the electrode and the sealing substrate. It is preferable that they are formed in this order.

  According to the present invention, a display region in which display pixels are formed in a matrix and a pixel substrate having a peripheral region surrounding the display region are disposed opposite to the pixel substrate at a predetermined interval, and the peripheral portion is a pixel substrate. A display panel including a sealing substrate that is bonded to a peripheral portion of the pixel substrate and seals an upper space of the pixel substrate, and is formed on a surface of the sealing substrate on the pixel substrate side corresponding to each pixel. It is preferable that a plurality of filters are disposed, and a desiccant-containing layer including a desiccant is disposed on the surface of the sealing substrate between the color filters.

  Moreover, it is preferable that a moisture-permeable organic layer is disposed between the desiccant-containing layer, the plurality of color filters, and the pixel substrate.

  The desiccant-containing layer is opaque and preferably functions as a black matrix.

  As described above, according to one aspect of the present invention, a transparent desiccant-containing layer is used. Therefore, the desiccant-containing layer can be disposed in the light transmission path, and the desiccant-containing layer can be disposed in the space between the pixel substrate and the sealing substrate in the top emission type. Moreover, the impact to an electrode can be relieve | moderated by arrange | positioning a moisture-permeable organic layer.

  Furthermore, by disposing the desiccant-containing layer between the color filters, the desiccant-containing layer can be made a top emission type even if it is opaque. Further, the opaque desiccant-containing layer can function as a black matrix.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

“First Embodiment”
FIG. 1 shows the configuration of the display panel according to the first embodiment. On the surface of an EL substrate (pixel substrate) 10, a TFT layer 12 that accommodates a plurality of TFTs, wirings, and the like is formed. Is formed.

  On the other hand, a sealing substrate 20 is disposed on the EL substrate 10 at a predetermined interval, and the EL substrate 10 and the sealing substrate 20 are airtightly bonded to each other by a sealing material 22 at their peripheral portions. . That is, the EL substrate 10 and the sealing substrate 20 have substantially the same shape (in this example, a quadrangular shape), the periphery of both is joined, and the internal space above the EL substrate 10 is sealed.

  A color filter 24 is disposed on the lower surface of the sealing substrate 20 (the surface on the EL substrate 10 side) corresponding to each pixel. Note that it is not necessary to separate the color filter 24 for pixels of the same color.

  Here, the cathode 18 is transparent, and a reflective film is provided below the anode 14. Therefore, the light generated in the organic layer 16 is emitted upward. For this reason, the sealing substrate 20 is also transparent. Further, the color filter 24 is determined according to the display color (RGB) of each pixel. The organic layer 16 includes a hole transport layer, a blue light emitting layer, an orange light emitting layer, an electron transport layer, and the like, and emits white light. Then, the white light is emitted as light of a predetermined color for each pixel by the color filter 24.

  The PBL desiccant layer 26 is disposed between the sealing substrate 20 and the color filter 24 and the cathode 18. The PBL desiccant layer 26 is a layer in which a granular desiccant such as calcium oxide is mixed with a moisture-permeable organic material (PBL: polymer buffer layer).

  Further, a support member 28 that supports the PBL desiccant layer 26 from the side surface is formed on the inner side of the sealing material 22 of the sealing substrate 20 to support the peripheral side surface of the PBL desiccant layer 26. The support member 28 is formed of the same material as the color filter 24 at the same time.

  Here, the production of such a display panel will be briefly described. First, the TFT layer 12 is formed on the glass substrate constituting the EL substrate 10. The TFT layer 12 includes a selection TFT, a driving TFT, and the like provided in each pixel, as well as peripheral horizontal and vertical driver circuits. The formation of the TFT layer 12 is performed by a normal method for manufacturing a TFT substrate.

  Next, an anode (pixel electrode) 14 divided for each pixel is formed on the TFT layer 12. The anode 14 is made of, for example, ITO, and a reflective film made of silver or the like is disposed on the lower surface thereof. Next, an organic layer 16 composed of a hole transport layer, a light emitting layer (two layers of a blue light emitting layer and an orange light emitting layer) and an electron transport layer is formed, and a cathode composed of a transparent electrode such as ITO is formed thereon. . These layers are formed on the entire surface. These are formed by vacuum deposition.

  On the other hand, a color filter 24 for each pixel is formed on the glass substrate constituting the sealing substrate 20. At this time, the support member 28 is formed together around the periphery of the glass substrate. The thickness of the color filter 24 is about 2 μm, and the support member 28 is about two to three times as thick as that. The color filter 24 and the support member 28 are preferably formed by laser thermal transfer from a sheet material, and the support member 28 is formed by stacking color filters. In addition, it can also carry out by printing or carrying out predetermined patterning to a resist, forming a recessed part, and apply | coating the material of a color filter there.

  Then, a PBL desiccant layer 26 is formed so as to cover the color filter 24. This is done by mixing both materials and filling the inner space of the support member 28 with a suitable solvent. This filling can be performed by a dispenser or an ink jet. And it hardens | cures by heating to about 80 degreeC. However, the PBL desiccant layer 26 is soft and elastic even after being cured. The PBL desiccant layer 26 may be cured after the sealing with the next sealing material 22 is performed.

  Next, the EL substrate 10 is brought close to a predetermined interval with respect to the sealing substrate 20 in a nitrogen atmosphere chamber, and the inside of both is hermetically sealed with a sealing material 22. In this way, the display panel is configured. As the sealing material 22, a UV curable epoxy adhesive or the like is used.

  At this time, the PBL desiccant layer 26 is in contact with the cathode 18, but since the PBL is soft and elastic, this acts as a buffer to soften the impact, and no great force is applied to the cathode 18.

As described above, the desiccant is made of particles such as calcium oxide (CaO), and PBL is a silicon-based, acrylic-based, urethane-based, or epoxy-based resin, and has a large moisture permeability of 100 g / m ² · day or more. A non-hygroscopic material is employed.

  Furthermore, the color filter 24 often contains moisture. Therefore, it is better not to contact the PBL desiccant layer 26 directly. Therefore, it is also preferable to form an acrylic protective film so as to cover the surface of the color filter. Note that this protective film is easier to form if it covers the surface of the sealing substrate 20. Furthermore, it is also preferable to coat the surface of the color filter 24 with a fluorine resin. This fluororesin can be easily coated by a dry process.

  In such a display panel, the pixel circuit of each pixel of the TFT layer 12 is supplied with luminance data of the pixel, and a current corresponding thereto flows in the EL element of the pixel and emits light in the organic layer 16. The light is emitted upward for each pixel through the cathode 18, the color filter 24, and the sealing substrate 20 as light having a predetermined color and a predetermined intensity.

  In particular, since the PBL desiccant layer 26 has a hygroscopic action, the moisture inside the panel can be kept sufficiently low to prevent adverse effects on the lifetime of the EL element. And the desiccant is transparent, and there is no problem even with top emission. Further, since the PBL desiccant layer 26 is filled between the surfaces of the cathode 18 and the color filter 24, fluctuations in the gap in this part can be prevented, and the occurrence of uneven interference due to the gap fluctuation can be prevented.

  The color filter is formed for each pixel according to the emission color of the pixel. In particular, since the panel of the present embodiment is a top emission type, the light emitting area of each pixel can be increased. Therefore, in order to clarify the division from the neighboring pixels, it is preferable to divide the color filter 24 of each pixel by a black matrix.

“Second Embodiment”
FIG. 2 shows the configuration of the display panel of the second embodiment. The basic configuration is the same as that of the first embodiment, and the TFT layer 12 is formed on the surface of the EL substrate 10, and the organic EL element including the anode 14, the organic layer 16, and the cathode 18 is formed thereon. Has been. A sealing substrate 20 is disposed on the EL substrate 10 at a predetermined interval, and the EL substrate 10 and the sealing substrate 20 are airtightly bonded to each other by a sealing material 22 at a peripheral portion thereof. A color filter 24 is disposed on the lower surface of the sealing substrate 20 corresponding to each pixel. The cathode 18 is transparent, and a reflective film is provided below the anode 14. Light generated in the organic layer 16 is emitted as light of a predetermined color for each pixel by the color filter 24. The

  And the desiccant layer 30 is arrange | positioned in the part in which the color filter 24 of the lower surface of the sealing substrate 20 is not arrange | positioned. The desiccant layer 30 may be transparent or opaque, but by making it opaque, the desiccant layer 30 functions as a black matrix that partitions pixels.

  Further, the PBL layer 32 is disposed between the desiccant layer and the color filter 24 and between the cathode 18 so as to be filled. The PBL layer 32 is a layer made of a moisture-permeable organic material (PBL: polymer buffer layer). The surface of the color filter 24 is coated with a fluorine resin. The PBL layer 32 is excellent in moisture permeability, and moisture in the color filter 24 is likely to diffuse toward the organic EL element, but this moisture movement can be prevented by coating.

  Here, a color filter 24 for each pixel is first formed on a glass substrate constituting the sealing substrate 20 of the display panel, and the surface of the color filter 24 is coated with a fluorine-based resin. For this, a dry process such as a plasma polymerization method is used. Here, the coating of the fluorine-based resin needs to be formed on at least the surface of the color filter 24 in contact with the PBL layer 32, but may be formed on the entire surface including the surface of the sealing substrate 20. Next, the desiccant layer 30 is formed by a dispenser or the like.

  Then, the PBL layer 32 is interposed between the sealing substrate 20 and the EL substrate 10 to seal both. This process is basically the same as the first embodiment described above.

  As described above, in the present embodiment, it is possible to prevent moisture from entering the organic EL element by moving the moisture to the desiccant layer 30 via the PBL layer 32 which is elastic and has high moisture permeability. In addition, since the PBL layer 32 is soft and elastic, this serves as a buffer and can prevent a large force from being applied to the cathode 18.

“Third Embodiment”
FIG. 3 shows the configuration of the display panel of the third embodiment. The basic configuration is the same as in the first and second embodiments, but a planarizing layer 36 made of acrylic resin or the like is formed on the lower surface of the sealing substrate 20 so as to cover the color filter 24. Yes. A moisture blocking layer 38 made of SiN or the like is formed on the lower surface of the planarizing layer 36, and the PBL desiccant layer 26 is formed so as to be filled with the cathode 18 below the moisture blocking layer 38. That is, the planarization layer 36 and the moisture block layer 38 are added to the first embodiment.

  In this configuration, since the color filter 24 formed for each pixel is covered with the planarization layer 36, the level difference of the color filter 24 is eliminated, and the thickness of the PBL desiccant layer 26 becomes substantially constant. Impact buffer and moisture removal. In addition, since the moisture block layer 38 is provided, diffusion of moisture from the color filter 24 can be prevented.

“Fourth Embodiment”
FIG. 4 shows the configuration of the display panel of the fourth embodiment. Although the basic configuration is the same as in the first to third embodiments, a color filter 24 for each pixel is disposed on the cathode 18 of the EL substrate 10 via a stress relaxation layer 40 made of SiN or the like. A PBL layer 32 is disposed so as to cover the color filter 24, and a desiccant layer 30 is formed thereon. Similar effects can be obtained by this configuration.

“Fifth Embodiment”
FIG. 5 shows the configuration of the display panel of the fifth embodiment. In the fifth embodiment, the positions of the PBL layer 32 and the desiccant layer 30 are opposite to those in the fourth embodiment. That is, the desiccant layer 30 is disposed so as to cover the color filter, and the PBL layer 32 is disposed thereon.

“Sixth Embodiment”
FIG. 6 shows the configuration of the display panel of the sixth embodiment. In the sixth embodiment, the desiccant layer 30 is formed on the stress relaxation layer 40 on the cathode 18 of the EL substrate 10, and the color filter 24 for each pixel is disposed thereon. A PBL layer 32 is formed so as to cover the color filter 24.

“Seventh Embodiment”
FIG. 7 shows the configuration of the display panel of the seventh embodiment. In the seventh embodiment, the positions of the PBL layer 32 and the desiccant layer 30 are opposite to those in the sixth embodiment. That is, the PBL 32 is formed on the stress relaxation layer 40 on the cathode 18 of the EL substrate 10, and the color filter 24 for each pixel is disposed thereon. A desiccant layer 30 is formed so as to cover the color filter 24.

`` Pixel configuration ''
FIG. 8 is a cross-sectional view showing the configuration of the light emitting area of one pixel and the portion of the driving TFT. Each pixel is provided with a plurality of TFTs, and the driving TFT is a TFT that controls a current supplied from the power supply line to the organic EL element. A buffer layer 111 made of a stack of SiN and SiO ₂ is formed on the entire surface of the glass substrate 130, and a polysilicon active layer 122 is formed on the buffer layer 111 in a predetermined area (an area for forming a TFT).

A gate insulating film 113 is formed on the entire surface covering the active layer 122 and the buffer layer 111. This gate insulating film 113 is formed, for example, by laminating SiO ₂ and SiN. Above this gate insulating film 113 and on the channel region 122c, for example, a Cr gate electrode 124 is formed. Then, by doping the active layer 122 with impurities using the gate electrode 124 as a mask, the active layer 122 has a channel region 122c that is not doped with impurities under the gate electrode in the central portion, and impurity impurities on both sides thereof. Doped source region 122s and drain region 122d are formed.

  Then, an interlayer insulating film 115 is formed on the entire surface so as to cover the gate insulating film 113 and the gate electrode 124, and contact holes are formed above the source region 122s and the drain region 122d in the interlayer insulating film 115. Thus, a source electrode 153 and a drain electrode 126 disposed on the upper surface of the interlayer insulating film 115 are formed. Note that a power supply line (not shown) is connected to the source electrode 153. Here, the drive TFT thus formed is a p-channel TFT in this example, but may be an n-channel.

  A planarizing film 117 is formed on the entire surface so as to cover the interlayer insulating film 115, the source electrode 153, and the drain electrode 126, and a reflective film 169 made of Ag or the like is formed at the position of the light emitting region on the upper surface of the planarizing film 117. A transparent electrode 161 functioning as an anode is provided thereon. In addition, a contact hole is formed in the planarizing film 117 above the drain electrode 126, and the drain electrode 126 and the transparent electrode 161 are connected through the contact hole.

  Note that an organic film such as an acrylic resin is usually used for the interlayer insulating film 115 and the planarizing film 117, but an inorganic film such as TEOS can also be used. The source electrode 153 and the drain electrode 126 are made of metal such as aluminum, and the transparent electrode 161 is usually made of ITO.

  The transparent electrode 161 is usually formed in most of the area of each pixel, and has a substantially quadrangular shape as a whole, and a contact portion for connection with the drain electrode 126 is formed as a protruding portion, and extends in the contact hole. . The reflective film 169 is formed slightly smaller than the transparent electrode 161.

  On the transparent electrode 161, a hole transport layer 162 formed on the entire surface, two organic light emitting layers 163a and 163b, an organic layer 165 composed of an electron transport layer 164, and a transparent (for example, ITO) counter electrode 166 Are formed as cathodes.

  A planarization film 167 is formed below the hole transport layer 162 on the peripheral portion of the transparent electrode 161, and the planarization film 167 allows the light emitting region of each pixel to be on the transparent electrode 161, thereby transporting holes. A portion where the transparent electrode 161 is in direct contact with the layer 162 is limited, and this is a light emitting region. Note that an organic film such as an acrylic resin is usually used for the planarizing film 167, but an inorganic film such as TEOS can also be used.

For the hole transport layer 162, the organic light emitting layers 163a and 163b, and the electron transport layer 164, materials usually used for organic EL elements are used. The light emitting color of the organic light emitting layers 163a and 163b is determined by the material (usually a dopant). For example, the organic light emitting layer 163 emits orange light, and the organic light emitting layer 163b emits blue light. It becomes. Note that NPB is used for the hole transport layer 162, tBADN + DBzR is used for the orange organic light emitting layer 163a, TBADN + TBP is used for the blue organic light emitting layer 163, and Alq ₃ is used for the electron transport layer 164.

  In such a configuration, when the driving TFT is turned on according to the set voltage of the gate electrode 124, a current from the power supply line flows from the transparent electrode 161 to the counter electrode 166, and light is emitted from the organic light emitting layer 163 by this current. This occurs, the light passes through the counter electrode 166, is reflected by the reflective film 169, and is emitted upward in the figure.

It is a figure which shows the structure of 1st Embodiment. It is a figure which shows the structure of 2nd Embodiment. It is a figure which shows the structure of 3rd Embodiment. It is a figure which shows the structure of 4th Embodiment. It is a figure which shows the structure of 5th Embodiment. It is a figure which shows the structure of 6th Embodiment. It is a figure which shows the structure of 7th Embodiment. It is a figure which shows the structure for 1 pixel.

Explanation of symbols

  10 substrate, 12 TFT layer, 14 opaque region, 14 anode, 16,165 organic layer, 18 cathode, 20 sealing substrate, 22 sealing material, 24 color filter, 26, 30 desiccant layer, 28 support member, 32 PBL layer, 36 planarization layer, 38 moisture blocking layer, 40 stress relaxation layer, 111 buffer layer, 113 gate insulating film, 115 interlayer insulating film, 117,167 planarizing film, 122 active layer, 122c channel region, 122d drain region, 122s source Region, 124 gate electrode, 126 drain electrode, 130 glass substrate, 153 source electrode, 161 transparent electrode, 162 hole transport layer, 163 organic light emitting layer, 163a, 163b organic light emitting layer, 164 electron transport layer, 166 counter electrode, 169 reflection film.

Claims (16)

A display region in which display pixels are formed in a matrix, a pixel substrate having a peripheral region surrounding the display region, and the pixel substrate are arranged opposite to each other at a predetermined interval, and the peripheral portion is bonded to the peripheral portion of the pixel substrate. A display panel including a sealing substrate for sealing the upper space of the pixel substrate,
A transparent desiccant-containing layer containing a hygroscopic desiccant is disposed in a space between the pixel substrate and the sealing substrate;
A display panel, wherein light emitted from the display pixel is emitted through the desiccant-containing layer and a sealing substrate. The display panel according to claim 1,
A display panel, wherein a plurality of color filters that transmit light from the display pixels are provided on a surface of the sealing substrate on a pixel substrate side. The display panel according to claim 1 or 2,
The display panel, wherein the desiccant-containing layer includes both a moisture-permeable organic material and a hygroscopic desiccant. The display panel according to claim 3,
A display panel, comprising a support material for supporting a side surface of the desiccant-containing layer, which is made of the same base material as the color filter layer, on a surface of the sealing substrate on the pixel substrate side. In the display panel of any one of Claims 2-4,
The display panel, wherein the plurality of color filters are covered with the desiccant-containing layer. The display panel according to any one of claims 2 to 5,
The plurality of color filters are covered with a planarization layer that planarizes the surface, and the desiccant-containing layer is filled between the planarization layer and the surface of the pixel substrate. . The display panel according to claim 6,
A display panel, wherein a moisture blocking layer that blocks moisture permeation is formed between the planarizing layer and the desiccant-containing layer. The display panel according to claim 1,
The pixel substrate has electrodes that cover the entire display area;
A plurality of color filters are formed on the electrodes, and the desiccant-containing layer is formed between the sealing substrate and covering the color filters. The display panel according to claim 8,
The display panel further comprising a moisture-permeable organic material layer laminated on the desiccant-containing layer. The display panel according to claim 8 or 9,
The display panel, wherein the moisture-permeable organic material layer is disposed on the pixel substrate side of the desiccant-containing layer. The display panel according to any one of claims 8 to 10,
The display panel, wherein the moisture-permeable organic material layer is disposed on the sealing substrate side of the desiccant-containing layer. The display panel according to claim 1,
The pixel substrate has electrodes that cover the entire display area;
A display panel, wherein the desiccant-containing layer, a plurality of color filters, and a moisture-permeable organic material layer are formed in this order on the electrode. The display panel according to claim 1,
The pixel substrate has electrodes that cover the entire display area;
A display panel, wherein a plurality of color filters, the desiccant-containing layer, and a moisture-permeable organic material layer are formed in this order between the electrode and the sealing substrate. A display region in which display pixels are formed in a matrix, a pixel substrate having a peripheral region surrounding the display region, and the pixel substrate are arranged opposite to each other at a predetermined interval, and the peripheral portion is bonded to the peripheral portion of the pixel substrate. A display panel including a sealing substrate for sealing the upper space of the pixel substrate,
A plurality of color filters formed corresponding to each pixel are disposed on the surface of the sealing substrate on the pixel substrate side,
A display panel, wherein a desiccant-containing layer including a desiccant is disposed on a surface of a sealing substrate between the color filters. The display panel according to claim 14,
A display panel, wherein a moisture-permeable organic layer is disposed between the desiccant-containing layer, the plurality of color filters, and the pixel substrate. The display panel according to claim 14 or 15,
The display panel, wherein the desiccant-containing layer is opaque and functions as a black matrix.

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