TW201415619A - Organic light-emitting display panel and method for manufacturing the same - Google Patents

Abstract

The present invention provides an organic light-emitting display panel including a first substrate, a black matrix, a patterned color filter layer, a passivation layer, a spacer, a second substrate, and an organic light-emitting display unit. The black matrix is disposed on the first substrate, and has at least one display opening. The patterned color filter layer has at least one region covering the display opening. The passivation layer covers the patterned color filter layer and the black matrix, and has a recess disposed right on the region and corresponding the display opening. The spacer is disposed on the passivation layer. The second substrate is disposed opposite to the first substrate, and the organic light-emitting display unit is disposed on the second substrate and corresponding to the display opening.

Description

Organic light emitting display panel and manufacturing method thereof

The present invention relates to an organic light emitting display panel and a manufacturing method thereof, and more particularly to a top surface light emitting organic light emitting display panel and a manufacturing method thereof.

In recent years, organic light-emitting display (OLED) has gradually become a popular emerging flat panel display, which has self-luminous, wide viewing angle, fast response time, high luminous efficiency, low operating voltage, and thin panel thickness. It has been made into a flexible panel and has a simple process, so it has been widely used in various flat display products.

A conventional organic light emitting display panel includes a plurality of organic light emitting diodes as display pixels to display a picture. The organic light emitting diode system is composed of an anode, a light emitting layer and a cathode, and the anode, the light emitting layer and the cathode are sequentially stacked on the substrate. Further, in order to reduce the luminescence energy barrier of the organic light-emitting diode, the anode is made of a material having a high work function, and the cathode is made of a material having a low work function. However, a material generally having a low work function and a high electrical conductivity is a metal material, and in order not to increase the resistance value of the cathode, the cathode composed of the metal material has a certain thickness and is not translucent. Therefore, the conventional large-sized organic light-emitting display panel emits light generated by the light-emitting layer from the anode, that is, a so-called bottom-surface light-emitting organic light-emitting display panel.

However, the thin film electro-crystal system for driving the organic light-emitting diode and the organic light-emitting diode are formed on the same substrate and interposed between the organic light-emitting diode and the substrate, so the pixel of the bottom-emitting organic light-emitting display panel The aperture ratio is limited by the size and number of thin film transistors and cannot be increased. In addition, in order to effectively control the magnitude of the current driving the organic light emitting diode, the pixel gray scale generated by the organic light emitting diode is more obvious, and the number of thin film transistors for driving the single organic light emitting diode is relatively increase. As a result, as the size of the organic light-emitting display panel is reduced, the aperture ratio of the pixel is greatly reduced. Therefore, an organic light-emitting display panel having a top surface light emission has been developed to prevent the number of thin film transistors from affecting the aperture ratio of the pixel.

The conventional top-emitting organic light-emitting display panel covers a color filter substrate on the array substrate on which the thin film transistor and the organic light-emitting diode are formed to protect the organic light-emitting diode and enhance the organic light-emitting display panel. The color gamut that produces the color of the light. However, in the process of combining the color filter substrate and the array substrate, particles in the air are likely to adhere to the array substrate, so that the particles are easily sandwiched between the color filter substrate and the array substrate. Furthermore, the cell gap between the color filter substrate and the array substrate is only about 3.8 micrometers, but the particle size in the air is approximately between 5 micrometers and 10 micrometers, so the color filter substrate is combined. When it is combined with the array substrate, the particles easily protrude toward the organic light-emitting diode, and the organic light-emitting diode is crushed.

In view of this, it is an industry goal to provide an organic light-emitting display panel having a cell gap larger than the particle size to avoid damage of the organic light-emitting diode.

One of the main objects of the present invention is to provide an organic light emitting display panel and a method of fabricating the same, which can prevent damage of the organic light emitting diode due to the gap between the color filter substrate and the array substrate.

To achieve the above object, the present invention provides a method of fabricating an organic light emitting display panel. First, a first substrate is provided having a first inner surface. Then, a black matrix is formed on the first substrate of the first inner surface, and the black matrix has at least one display opening respectively exposing the first substrate. Forming a patterned color filter layer on the first substrate of the first inner surface, having at least one first block and a second block, the first block covering the first substrate of the display opening, The second block is placed on the black matrix. Subsequently, a first protective layer is formed on the first substrate of the first inner surface, covering the patterned color filter layer and the black matrix, and the first protective layer has a first recess, wherein the first recess is located in the patterned color filter Above the first block of the light layer, and aligned with the display opening. Next, a first spacer is formed on the first protective layer, and the first spacer is located above the second block of the patterned color filter layer. Finally, the first substrate and the second substrate are assembled, the second substrate has a second inner surface facing the first inner surface of the first substrate, and the second substrate has an organic light emitting display element disposed on the second inner surface On the two substrates, and aligned with the display opening.

To achieve the above objective, the present invention provides an organic light emitting display panel including a first substrate, a black matrix, a patterned color filter layer, a first protective layer, a first spacer, and a second substrate. And an organic light emitting display element. First substrate There is a first inner surface. The black matrix is disposed on the first substrate of the first inner surface, and the black matrix has at least one display opening. The patterned color filter layer has at least one first block and a second block, the first block covers the first substrate of the display opening, and the second block is disposed on the black matrix. The first protective layer covers the patterned color filter layer and the black matrix, and the first protective layer has a first recess located above the first block of the patterned color filter layer and aligned with the display opening. The first spacer is disposed on the first protective layer, and the first spacer is located above the second block of the patterned color filter layer. The second substrate is disposed opposite to the first substrate, and the second substrate has a second inner surface facing the first inner surface of the first substrate. The organic light emitting display element is disposed on the second substrate of the second inner surface and aligned with the display opening.

The organic light emitting display panel of the present invention has a first recess at a position corresponding to the display opening of the first protective layer, and the organic light emitting display element is also disposed corresponding to the display opening, thereby increasing the bottom of the first recess and the organic light emitting display element The gap is such that when the color filter substrate and the array substrate are combined, the particles do not protrude toward the organic light-emitting display element, and the organic light-emitting display element can be prevented from being damaged.

Please refer to FIG. 1 to FIG. 8 . FIG. 1 to FIG. 8 are schematic diagrams showing a method for fabricating an organic light emitting display panel according to a first embodiment of the present invention, wherein FIG. 5 and FIG. 6 respectively show FIG. A cross-sectional view of a section line AA' and a section line BB', and FIG. 8 is a schematic cross-sectional view of the organic light-emitting display panel according to the first embodiment of the present invention. The organic light emitting display panel of the present invention may be composed of a plurality of pixel structures, but for simplicity of explanation, The following is an example of a single pixel structure of an organic light emitting display panel, but is not limited thereto. First, as shown in FIG. 1 , a first substrate 12 such as a transparent substrate such as glass, tempered glass, plastic, sapphire or quartz is provided, and may be a rigid substrate, a flexible substrate or a flexible substrate, and the first The substrate 12 has a first inner surface 12a. Then, a lithography process is performed to form a black matrix 14 on the first substrate 12 of the first inner surface 12a, and the black matrix 14 has at least one display opening 14a exposing the first substrate 12, respectively. The black matrix 14 of this embodiment can be used to shield the color filter substrate from the opaque elements in the array substrate, such as metal pattern layers and active components.

Next, as shown in FIG. 2, another lithography process is performed to form a patterned color filter layer 16 on the first substrate 12 and the black matrix 14 of the first inner surface 12a, wherein the color filter layer 16 is patterned. There are at least one first block 16a and one second block 16b. Also, the first block 16a covers the first substrate 12 of the display opening 14a and extends over the partial black matrix 14 to completely shield the display opening 14a, and the second block 16b is disposed on the black matrix 14. The first block 16a of the patterned color filter layer 16 has a particular color for determining the color of light exiting through the first block 16a.

Then, as shown in FIG. 3, a first protective layer 18 is formed on the first substrate 12 of the first inner surface 12a, covering the patterned color filter layer 16 and the black matrix 14, and the first protective layer 18 has a The first recess 18a, wherein the first recess 18a is located above the first block 16a of the patterned color filter layer 16, and is aligned with the display opening 14a. Moreover, the first protective layer 18 has a thick portion 18b, a thin portion 18c, and a spacer portion 18d, so that the thick portion 18b, the thin portion 18c and the spacer portion 18d form the first recess 18a, and the thin portion 18c is located at the bottom of the first recess 18a. In this embodiment, the step of forming the first protective layer 18 is preceded by the first substrate 12 and the black matrix 14 overlying a protective material layer, such as a photoresist material, including a negative photoresist material or a positive photoresist material. . Then, the half-transmissive portion is aligned with the position of the display opening 14a by using a half-tone mask or a gray-tone mask, that is, the position of the first recess 18a is to be formed. And performing another lithography process to remove part of the photoresist material and simultaneously forming the first protective layer 18 having the thick portion 18b, the thin portion 18c and the spacer portion 18d. Thereby, the thin portion 18c is still covered on the first block 16a of the patterned color filter layer 16 without being damaged in subsequent processes. The material for forming the first protective layer of the present invention is not limited to the above, and the method of forming the first protective layer of the present invention is not limited thereto. In a modified embodiment of the present invention, the material of the first protective layer 18 may also be a developable organic material, and the steps of direct exposure and development are formed simultaneously to form the thick portion 18b, the thin portion 18c and the spacer portion 18d. The first protective layer 18. In other embodiments of the present invention, the material of the first protective layer 18 may also be an organic material, and the step of forming the first protective layer may also etch or grind the thickness of the protective material layer to the same thickness as the thick portion. A thick portion is formed first, and then another lithography process is performed to etch a first recess on the protective material layer to form a thin portion. In addition, the first recess 18a of the embodiment has a depth of between 1 micrometer and 3 micrometers, and the first protective layer 18 has a thickness T, which may be between 1 micrometer and 30 micrometers, wherein the thin portion The first thickness T1 may be between 1 micrometer and 2 micrometers, the second thickness T2 of the spacer portion may be between 2 micrometers and 6 micrometers, and the third thickness of the thick portion T3 may be between 4 micrometers and 30 micrometers. Between microns, but the invention is not limited thereto. Moreover, the depth of the first recess can be adjusted by controlling the exposure energy of the lithography process.

Next, as shown in FIG. 4, a second protective layer 20, such as tantalum nitride, hafnium oxide, hafnium oxynitride or other organic material, is selectively coated on the first protective layer 18. Subsequently, a metal pattern layer 22, for example, a grid-like metal pattern, is formed on the spacer portion 18d. The metal pattern layer 22 is formed by, for example, dissolving conductive particles such as silver particles, aluminum particles, copper particles, or indium tin oxide particles in a solvent such as a negative resist solvent to form a metal. The solution is applied to the second protective layer 20. Then, an exposure process is performed to cure a portion of the solution on the second block 16b of the patterned color filter layer 16 while the other portions are not cured. Next, a development process is performed to remove the uncured solution. Subsequently, the solidified solution on the second block 16b of the patterned color filter layer 16 is baked to remove the solvent in the solidified solution, and a metal pattern layer 22 is formed on the spacer portion 18d, for example, a grid shape Metal pattern. It should be noted that, before the formation of the metal pattern layer 22, the present embodiment covers the second protective layer 20 before the first protective layer 18, so that the metal pattern layer 22 can have a better adhesion to the second protective layer 20. The peeling of the metal pattern layer 22 due to the poor adhesion to the first protective layer 18 is avoided.

Next, as shown in FIG. 5, FIG. 6 and FIG. 7, a first spacer 24 is formed on the second protective layer 20 and the metal pattern layer 22, and the metal pattern layer 22 can be used to assist in the first gap. The material of the first spacer 24 is, for example, a photoresist material, wherein the first spacer 24 covers the metal pattern layer 22 along a first direction D1, but covers only a portion along a second direction D2 of the vertical first direction. The metal pattern layer 22 is exposed and a portion of the metal pattern layer 22 is exposed. Then, in the second protective layer 20, the metal pattern layer 22 and the first The gap 24 is covered with a transparent electrode layer 26, and the transparent electrode layer 26 is in contact with the exposed portion of the metal pattern layer 22, and is electrically connected to each other. This design can increase the first spacer 24 and the transparent electrode layer 26. Contactable area. The color filter substrate 27 of this embodiment has been completed up to this point. In the present embodiment, the first spacer 24 has a height of between 1 micrometer and 10 micrometers, but is not limited thereto.

Then, as shown in FIG. 8, a second substrate 28 such as a transparent substrate such as glass, plastic or quartz is provided, and is not limited thereto. A second inner surface 28a is formed, and an organic light emitting display element 30 is formed on the second inner surface 28a of the second substrate 28. The array substrate 32 of this embodiment has been completed so far. Subsequently, the first substrate 12 and the second substrate 28 are assembled with the second inner surface 28a of the second substrate 28 facing the first inner surface 12a of the first substrate 12, and the organic light emitting display element 30 is aligned with the display opening 14a. The light generated by the organic light-emitting display element 30 can be emitted from the display opening 14a through the patterned color filter layer 16 to form the display opening 14a to form the organic light-emitting display panel 10 of the present embodiment.

In the embodiment, the steps of forming the organic light emitting display element 30 are as follows, but are not limited thereto. First, an active device layer 34 is formed on the second inner surface 28a of the second substrate 28. The active device layer 34 includes an active device 48, such as a thin film transistor, and a flat layer 50 covering the active device 48. The second substrate 28 has a through hole 50a exposing one of the electrodes of the active element 48. Then, a first electrode 36 is formed on the flat layer 50 of the active device layer 34, and is electrically connected to the electrode of the active device 48 through the through hole 50a of the flat layer 50, wherein the first electrode 36 can be made of, for example, gold. It is composed of a conductive material having a reflection characteristic and a high work function, and the position of the first electrode 36 is disposed corresponding to the display opening 14 of the color filter substrate 27. Subsequently, a retaining wall 38 is formed on the active device layer 34 and the first electrode 36, and the retaining wall 38 has an opening 38a exposing the first electrode 36, wherein the retaining wall 38 is formed of an insulating material. Then, a second spacer 40 is formed on the retaining wall 38, for example, a photoresist material, and the exposed first electrode 36 is covered with a light emitting layer 42 and a second electrode 44, wherein the light emitting layer 42 and the first layer The two electrodes 44 extend to cover the retaining wall 38 and the second spacer 40, so that the second electrode 44 can have a second recess 44a aligned with the opening 38a.

Furthermore, the first electrode 36, the second electrode 44 and the light-emitting layer 42 located therebetween constitute an organic light-emitting diode 46 for generating a white light and arranged in alignment with the display opening 14a so that the white light can be directly directed upward. The light is directed to the first block 16a of the patterned color filter layer 16 and the light having the color of the patterned color filter layer 16 is displayed on the outer side of the organic light-emitting display panel 10. The first electrode 36 can serve as an anode of the organic light emitting diode 46 because of having a high work function, and is electrically connected to the electrode of the active device 48 through the through hole 50a of the flat layer 50 to control the organic light emitting device 2 by the active device 48. The gray level of the light produced by the polar body 46. The second electrode 44 may be composed of a transparent conductive material having a low work function, for example, silver or magnesium having a certain degree of thinness to exhibit a transparent state, and serving as a cathode of the organic light-emitting diode 46. In addition, the luminescent layer 42 is composed of an organic luminescent material that can generate white light, for example, the organic luminescent material is a red, green, and blue organic luminescent material stacked, or the organic luminescent material is a blue organic luminescent material. And with the yellow fluorescent powder, the organic light-emitting diode 46 can generate white light. It is worth mentioning that the first electrode 36 of the embodiment is made of a conductive material having reflective properties. The second electrode 44 is composed of a transparent conductive material, so that the light generated by the light-emitting layer 42 between the first electrode 36 and the second electrode 44 can be emitted not only from the second electrode 44 but also from the second electrode 44. The reflection of an electrode 36 is emitted toward the second electrode 44 to effectively enhance light utilization. Therefore, the organic light emitting display panel of the present embodiment is a top surface light emitting type organic light emitting display panel. The organic light-emitting diode of the present invention is not limited to the first electrode, the light-emitting layer, and the second electrode, but may include an electron injection layer and a hole injection layer, but is not limited thereto.

It should be noted that when the array substrate 32 and the color filter substrate 27 are assembled, the second spacer 40 is disposed corresponding to the first spacer 24, so that the second electrode 44 covering the second spacer 40 is covered with The transparent conductive layers 26 on the first spacers 24 are in contact with each other and electrically connected to each other. Therefore, the second electrode 44 of the organic light emitting display panel 10 of the present embodiment can be electrically connected to the peripheral driving component through the transparent conductive layer 26 and the metal pattern layer 22 to avoid being too thin and between the peripheral driving components. There is too much resistance. In addition, the second spacer 40, the first spacer 24 and the metal pattern layer 22 are stacked between the first protective layer 18 and the retaining wall 38, and the second recess 44a is disposed in alignment with the first recess 18a, so that the first recess 18a There may be a gap H between the bottom and the organic light-emitting display element 30, between 5 micrometers and 30 micrometers, so that the gap H corresponding to the display opening 14a may be larger than the particle size in the air. Thereby, when the color filter substrate 27 and the array substrate 32 are combined, the particles do not protrude toward the organic light-emitting diode 46, and the organic light-emitting diode can be prevented from being damaged.

The organic light emitting display panel of the present invention and the manufacturing method thereof are not the same as the above embodiment limit. The other embodiments and variations of the present invention are described in the following, and the same reference numerals will be used to refer to the same elements, and the repeated parts will not be described again.

Please refer to Figures 9 to 11 and refer to Figures 1 to 3 together. 9 to 11 are schematic views showing a method of fabricating an organic light emitting display panel according to a second embodiment of the present invention, wherein FIG. 11 is a cross-sectional view showing an organic light emitting display panel according to a second embodiment of the present invention. The manufacturing method of the present embodiment is the same as the manufacturing method of the first embodiment before the step of forming the first protective layer 18, as shown in FIGS. 1 to 3, and thus will not be described herein. Next, as shown in FIG. 8, the manufacturing method of the present embodiment forms the metal pattern layer 22 directly on the interstitial portion 18d of the first protective layer 18 after forming the first protective layer 18 as compared with the first embodiment. And no second protective layer is formed. Moreover, the material of the first protective layer 18 of the present embodiment may be selected from materials having a better adhesion to the metal pattern layer 22. Then, as shown in FIG. 10, the first spacers 102 are formed on the metal pattern layer 22. Subsequently, the transparent electrode layer 26 is covered on the first protective layer 18, the metal pattern layer 22 and the first spacer 102. The color filter substrate 104 of this embodiment has been completed so far. In the present embodiment, the difference between the first spacer 102 of the embodiment and the first spacer of the first embodiment is that the first spacer 102 of the embodiment is disposed only on the metal pattern layer 22 and does not extend to The sides of the metal pattern layer 22 are exposed such that the sides of the metal pattern layer 22 are exposed. Therefore, the transparent electrode layer 26 can be electrically connected to a portion of the metal pattern layer 22, thereby more effectively reducing the transparent connection of the transparent electrode layer 26 to the peripheral driving element. Finally, as shown in FIG. 11, an array substrate 106 is provided, and the array substrate 106 and the color filter substrate 104 are assembled to form the organic light emitting display surface of the embodiment. Board 100. In the embodiment, the array substrate 106 does not include the second spacer, but is not limited thereto. In other embodiments of the invention, the array substrate may also include a second spacer.

Please refer to Figures 12 to 13, and refer to Figures 1 to 3 together. 12 to 13 are schematic views showing a method of fabricating an organic light emitting display panel according to a third embodiment of the present invention, and FIG. 13 is a cross-sectional view showing an organic light emitting display panel according to a third embodiment of the present invention. The manufacturing method of the present embodiment is the same as the manufacturing method of the first embodiment before the step of forming the first protective layer 18, as shown in FIGS. 1 to 3, and thus will not be described herein. Next, as shown in FIG. 11, the manufacturing method of the present embodiment forms a first spacer directly on the spacer portion 18d of the first protective layer 18 after forming the first protective layer 18, as compared with the first embodiment. 202, and no second protective layer and metal pattern layer are formed. The color filter substrate 204 of this embodiment has been completed so far. Finally, as shown in FIG. 12, an array substrate 206 is provided, and the array substrate 206 and the color filter substrate 204 are assembled to form the organic light-emitting display panel 200 of the present embodiment. In the embodiment, the array substrate 206 does not include the second spacer, but is not limited thereto. In other embodiments of the invention, the array substrate may also include a second spacer.

In summary, the organic light emitting display panel of the present invention has a first recess at a position corresponding to the display opening of the first protective layer, and the organic light emitting diode is also disposed corresponding to the display opening, thereby increasing the bottom of the first recess and The gap between the organic light-emitting display elements is such that when the color filter substrate and the array substrate are combined, the particles do not protrude toward the organic light-emitting diode, and the organic light-emitting diode can be prevented from being damaged.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10‧‧‧Organic display panel

12‧‧‧First substrate

12a‧‧‧First inner surface

14‧‧‧Black matrix

14a‧‧‧Show opening

16‧‧‧ patterned color filter

16a‧‧‧First block

16b‧‧‧Second block

18‧‧‧First protective layer

18a‧‧‧first depression

18b‧‧‧Thick

18c‧‧‧

18d‧‧‧Interstance

20‧‧‧Second protective layer

22‧‧‧metal pattern layer

24‧‧‧First gap

26‧‧‧Transparent conductive layer

27‧‧‧Color filter substrate

28‧‧‧second substrate

28a‧‧‧Second inner surface

30‧‧‧Organic light-emitting display elements

32‧‧‧Array substrate

34‧‧‧Active component layer

36‧‧‧First electrode

38‧‧‧Retaining wall

38a‧‧‧ Opening

40‧‧‧Second spacer

42‧‧‧Lighting layer

44‧‧‧second electrode

44a‧‧‧second depression

46‧‧‧Organic Luminescent Diodes

48‧‧‧Active components

50‧‧‧flat layer

50a‧‧‧Perforation

100‧‧‧Organic display panel

102‧‧‧ first spacer

104‧‧‧Color filter substrate

106‧‧‧Array substrate

200‧‧‧Organic display panel

202‧‧‧First gap

204‧‧‧Color filter substrate

206‧‧‧Array substrate

D1‧‧‧ first direction

D2‧‧‧ second direction

T1‧‧‧first thickness

T2‧‧‧second thickness

T3‧‧‧ third thickness

H‧‧‧ gap

1 to 8 are schematic views showing a method of fabricating an organic light emitting display panel according to a first embodiment of the present invention.

9 to 11 are schematic views showing a method of fabricating an organic light emitting display panel according to a second embodiment of the present invention.

12 to 13 are schematic views showing a method of fabricating an organic light emitting display panel according to a third embodiment of the present invention.

10‧‧‧Organic display panel

12‧‧‧First substrate

12a‧‧‧First inner surface

14‧‧‧Black matrix

14a‧‧‧Show opening

16‧‧‧ patterned color filter

16a‧‧‧First block

16b‧‧‧Second block

18‧‧‧First protective layer

18a‧‧‧first depression

18b‧‧‧Thick

18c‧‧‧

18d‧‧‧Interstance

20‧‧‧Second protective layer

22‧‧‧metal pattern layer

24‧‧‧First gap

26‧‧‧Transparent conductive layer

27‧‧‧Color filter substrate

28‧‧‧second substrate

28a‧‧‧Second inner surface

30‧‧‧Organic light-emitting display elements

32‧‧‧Array substrate

34‧‧‧Active component layer

36‧‧‧First electrode

38‧‧‧Retaining wall

38a‧‧‧ Opening

40‧‧‧Second spacer

42‧‧‧Lighting layer

44‧‧‧second electrode

44a‧‧‧second depression

46‧‧‧Organic Luminescent Diodes

48‧‧‧Active components

50‧‧‧flat layer

50a‧‧‧Perforation

T1‧‧‧first thickness

T2‧‧‧second thickness

T3‧‧‧ third thickness

H‧‧‧ gap

Claims (29)

A method for fabricating an organic light-emitting display panel, comprising: providing a first substrate having a first inner surface; forming a black matrix on the first substrate of the first inner surface, and the black matrix has at least one display Opening, respectively exposing the first substrate; forming a patterned color filter layer on the first substrate of the first inner surface, having at least a first block and a second block, the first block Covering the first substrate of the display opening, the second block is disposed on the black matrix; forming a first protective layer on the first substrate of the first inner surface, covering the patterned color filter a layer and the black matrix, and the first protective layer has a first recess, wherein the first recess is located above the first block of the patterned color filter layer, and is aligned with the display opening; Forming a first spacer on a protective layer, and the first spacer is located above the second block of the patterned color filter layer; and assembling the first substrate and a second substrate, the second substrate has a second inner surface facing The first inner surface of the first substrate, the second substrate having an organic light emitting display device, the second substrate disposed on the second inner surface, and aligned with the display opening. The method of fabricating an organic light emitting display panel according to claim 1, wherein the first protective layer forms the first recess by using a half-tone mask or a gray-tone mask. . The method of fabricating an organic light-emitting display panel according to claim 1, wherein a gap between the bottom of the first recess and the organic light-emitting display element is between 5 micrometers and 30 micrometers. The method of fabricating an organic light emitting display panel according to claim 1, wherein the first protective layer has a thickness of between 1 micrometer and 30 micrometers. The method of fabricating an organic light emitting display panel according to claim 1, wherein the first protective layer has a thick portion and a thin portion, and the thin portion is located at the bottom of the first recess. The method of fabricating an organic light emitting display panel according to claim 1, wherein the first recess has a depth of between 1 micrometer and 3 micrometers. The method of fabricating an organic light emitting display panel according to claim 1, wherein the first spacer has a height of between 1 micrometer and 10 micrometers. The method for fabricating an organic light emitting display panel according to claim 1, further comprising covering the first protective layer with a second protective layer. The method of fabricating an organic light emitting display panel according to claim 1, wherein the organic light emitting display element comprises: an active component disposed on the second substrate of the second inner surface; and an organic light emitting diode disposed on the substrate The second substrate of the second inner surface The OLED includes at least a first electrode, a luminescent layer and a second electrode. The illuminating layer is disposed between the first electrode and the second electrode, and the first electrode is electrically connected to the active electrode. element. The method of fabricating the organic light-emitting display panel of claim 9, further comprising forming a retaining wall on the active component and the first electrode, and the retaining wall has an opening to expose the first electrode. The method of fabricating an organic light emitting display panel according to claim 10, wherein the second electrode covers the first electrode in the opening and has a second recess aligned with the opening. The method of fabricating an organic light emitting display panel according to claim 10, wherein the step of forming the organic light emitting display element further comprises forming a second spacer on the barrier. The method of fabricating the organic light-emitting display panel of claim 9, further comprising: forming a metal pattern layer on the first protective layer before the step of forming the first spacer, and the metal pattern layer is located Between the first spacer and the first protective layer; and after the step of forming the first spacer, the first protective layer, the metal pattern layer and the first spacer are covered with a transparent electrode layer. The method of fabricating an organic light emitting display panel according to claim 13, wherein the second electrode is electrically connected to the transparent electrode layer. The method of fabricating the organic light-emitting display panel of claim 13, further comprising forming a second spacer disposed between the second electrode and the second substrate. An organic light emitting display panel comprising: a first substrate having a first inner surface; a black matrix disposed on the first substrate of the first inner surface, and the black matrix has at least one display opening; The patterned color filter layer has at least a first block and a second block, the first block covers the first substrate of the display opening, and the second block is disposed on the black matrix; a first protective layer covering the patterned color filter layer and the black matrix, and the first protective layer has a first recess above the first block of the patterned color filter layer, And aligning the display opening; a first spacer disposed on the first protective layer, and the first spacer is located above the second block of the patterned color filter layer; a second substrate, followed by The first substrate is oppositely disposed, the second substrate has a second inner surface facing the first inner surface of the first substrate; and an organic light emitting display element is disposed on the second substrate of the second inner surface And aligned with the display opening. The organic light-emitting display panel of claim 14, wherein a gap between the bottom of the first recess and the organic light-emitting display element is between 5 micrometers and 30 micrometers. The organic light emitting display panel of claim 14, wherein the first protective layer has a thickness of between 1 micrometer and 30 micrometers. The organic light emitting display panel of claim 14, wherein the first protective layer has a thick portion and a thin portion, and the thin portion is located at the bottom of the first recess. The organic light emitting display panel of claim 14, wherein the first recess has a depth of between 1 micrometer and 10 micrometers. The organic light emitting display panel of claim 14, wherein the first spacer has a height between 1 micrometer and 10 micrometers. The organic light emitting display panel of claim 14, further comprising a second protective layer disposed between the first protective layer and the first protective layer. The organic light emitting display panel of claim 14, wherein the organic light emitting display element comprises: an active component disposed on the second substrate of the second inner surface; and an organic light emitting diode disposed on the second On the second substrate of the inner surface, the organic light emitting diode comprises at least a first electrode and a light emitting layer And a second electrode, the light emitting layer is disposed between the first electrode and the second electrode, and the first electrode is electrically connected to the active device. The organic light-emitting display panel of claim 23, wherein the organic light-emitting display element further comprises a retaining wall between the light-emitting layer and the active component, and the retaining wall has an opening corresponding to the first electrode. The organic light emitting display panel of claim 24, wherein the second electrode has a second recess aligned with the opening. The organic light emitting display panel of claim 23, further comprising: a metal pattern layer disposed between the first spacer and the first protective layer; and a transparent electrode layer covering the first protective layer And the metal pattern layer and the first spacer are in contact with and electrically connected to the metal pattern layer. The organic light emitting display panel of claim 26, wherein the first spacer covers a portion of the metal pattern layer. The organic light emitting display panel of claim 26, wherein the second electrode is electrically connected to the transparent electrode layer. The organic light emitting display panel of claim 26, further comprising a second spacer disposed between the second electrode and the second substrate.