CN103123956B - Organic light emitting display panel and manufacturing method thereof - Google Patents

Abstract

The invention relates to an organic light-emitting display panel and a manufacturing method thereof. The organic light-emitting display panel includes a first substrate, a black matrix, a patterned color filter layer, a protective layer, a spacer, a second substrate and An organic light-emitting display element. 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 area covering the display opening. The protective layer covers the patterned color filter layer and the black matrix, and has a recess located above the block and aligned with the display opening. The spacer is arranged on the protective layer. The second substrate is arranged opposite to the first substrate, and the organic light-emitting display element is arranged on the second substrate and aligned with the display opening.

Description

Organic light emitting display panel and manufacturing method thereof

technical field

The present invention relates to an organic light-emitting display panel and a manufacturing method thereof, in particular to a top-emitting organic light-emitting display panel and a manufacturing method thereof.

Background technique

In recent years, organic light-emitting display panel (organic light-emitting display, OLED) has gradually become a popular emerging flat-panel display. Due to the advantages of flexible panel and simple manufacturing process, 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 images. Wherein, each organic light emitting diode 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. Moreover, in order to reduce the light-emitting energy barrier of the OLED, the anode uses a material with a high work function, and the cathode uses a material with a low work function. However, generally the material with low work function and high conductivity is a metal material, and in order not to increase the resistance of the cathode, the cathode made of the metal material has a certain thickness and is not transparent. Therefore, conventional large-sized organic light-emitting display panels emit light generated by the light-emitting layer from the anode, which is a so-called bottom-emitting organic light-emitting display panel.

However, the thin film transistor used to drive the OLED is formed on the same substrate as the OLED, and is interposed between the OLED and the substrate. Therefore, the pixel aperture ratio of the bottom emitting OLED display panel is limited by the thin film transistor. size and quantity, and cannot be upgraded. In addition, in order to effectively control the magnitude of the current driving the OLED and make the pixel gray scale generated by the OLED more obvious, the number of thin film transistors used to drive a single OLED is relatively increased. In this way, as the size of the OLED panel shrinks, the pixel aperture ratio will be greatly reduced. Therefore, a top-emitting organic light-emitting display panel has been developed to prevent the number of thin film transistors from affecting the pixel aperture ratio.

A traditional top-emission organic light-emitting display panel will cover a color filter substrate on the array substrate formed with thin-film transistors and organic light-emitting diodes to protect the organic light-emitting diodes and improve the color of the light produced by the organic light-emitting display panel. area. However, during 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. Moreover, the gap (cellgap) between the color filter substrate and the array substrate is only about 3.8 microns, but the particle size in the air is between 5 microns and 10 microns, so when combining the color filter substrate and the array substrate, When the array substrate is used, the particles tend to protrude toward the OLEDs and crush the OLEDs.

In view of this, it is a goal of the industry to provide an organic light emitting display panel with a cell gap larger than the size of a particle to prevent the organic light emitting diode from being damaged.

Contents of the invention

One of the main objectives of the present invention is to provide an organic light emitting display panel and a manufacturing method thereof, so as to prevent organic light emitting diodes from being damaged by particles in the air located in the gap between the color filter substrate and the array substrate.

To achieve the above objectives, the present invention provides a method for manufacturing an organic light emitting display panel. Firstly, a first substrate is provided, which has a first inner surface. Then, a black matrix is formed on the first substrate on the first inner surface, and the black matrix has at least one display opening, respectively exposing the first substrate. Next, a patterned color filter layer is formed on the first substrate on the first inner surface, and 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 covers the display opening on the first substrate. Two blocks are set on the black matrix. Subsequently, a first protection layer is formed on the first substrate on the first inner surface, covering the patterned color filter layer and the black matrix, and the first protection layer has a first depression, wherein the first depression is located in the patterned color filter layer. above the first block of the optical layer and aligned with the display opening. Next, a first spacer is formed on the first protection layer, and the first spacer is located above the second block of the patterned color filter layer. Finally, assemble 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 has an organic light-emitting display element, and is arranged on the second inner surface of the second inner surface. on the second substrate and aligned with the display opening.

To achieve the above purpose, the present invention provides an organic light emitting display panel, which includes a first substrate, a black matrix, a patterned color filter layer, a first protective layer, a first spacer, a second A substrate and an organic light emitting display element. The first substrate has a first inner surface. The black matrix is disposed on the first substrate on 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 is covered on the first substrate of the display opening, and the second block is arranged on the black matrix. The first protection layer is covered on the patterned color filter layer and the black matrix, and the first protection layer has a first recess, which is 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 passivation 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 on the second inner surface and aligned with the display opening.

The organic light-emitting display panel of the present invention has a first depression at the position corresponding to the display opening in the first protective layer, and the organic light-emitting display element is also arranged corresponding to the display opening, so that the gap between the bottom of the first depression and the organic light-emitting display element can be enlarged The gap is so that when the color filter substrate and the array substrate are combined, the particles will not protrude toward the organic light emitting display element, and the organic light emitting display element can be prevented from being damaged.

Description of drawings

1 to 8 are schematic diagrams of a manufacturing method of an organic light emitting display panel according to a first embodiment of the present invention;

9 to 11 are schematic diagrams of a manufacturing method of an organic light emitting display panel according to a second embodiment of the present invention;

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

Among them, reference signs:

10 organic light emitting display panel 12 first substrate

12a first inner surface 14 black matrix

14a shows opening 16 patterned color filter layer

16a first block 16b second block

18 first protection layer 18a first recess

18b thick part 18c thin part

18d spacer part 20 second protective layer

22 metal pattern layer 24 first spacer

26 transparent conductive layer 27 color filter substrate

28 second substrate 28a second inner surface

30 organic light emitting display element 32 array substrate

34 active element layer 36 first electrode

38 retaining wall 38a hole

40 second spacer 42 light emitting layer

44 second electrode 44a second recess

46 organic light-emitting diodes 48 active components

50 flat layers 50a perforated

100 organic light emitting display panel 102 first spacer

104 color filter substrate 106 array substrate

200 organic light emitting display panel 202 first spacer

204 color filter substrate 206 array substrate

D1 first direction D2 second direction

T1 first thickness T2 second thickness

T3 third thickness H clearance

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Please refer to FIG. 1 to FIG. 8. FIG. 1 to FIG. 8 are schematic diagrams of a manufacturing method of an organic light-emitting display panel according to a first embodiment of the present invention, wherein FIG. 5 and FIG. BB' is a schematic cross-sectional view, 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 to simplify the description, a single pixel structure of the organic light emitting display panel is used as an example for description below, but not limited thereto. First, as shown in FIG. 1 , a first substrate 12 is provided, such as transparent substrates such as glass, strengthened glass, plastic, sapphire or quartz, and can be a hard substrate, a flexible substrate or a flexible substrate, and the second A substrate 12 has a first inner surface 12a. Then, a lithography process is performed to form a black matrix 14 on the first inner surface 12 a of the first substrate 12 , and the black matrix 14 has at least one display opening 14 a to expose the first substrate 12 respectively. The black matrix 14 of this embodiment can be used to shield the color filter substrate and opaque components 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 on the first inner surface 12a, wherein the patterned color filter layer 16 has At least one first block 16a and one second block 16b. Moreover, the first block 16 a covers the first substrate 12 of the display opening 14 a and extends to part of the black matrix 14 to completely cover the display opening 14 a, and the second block 16 b is disposed on the black matrix 14 . The first block 16a of the patterned color filter layer 16 has a specific color for determining the color of light passing through the first block 16a.

Subsequently, as shown in FIG. 3, a first protective layer 18 is formed on the first substrate 12 on 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 first protective layer 18. A recess 18a, wherein the first recess 18a is located above the first section 16a of the patterned color filter layer 16 and aligned with the display opening 14a. Moreover, the first protection 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 a first depression 18a, and the thin portion 18c is located in the first The bottom of the depression 18a. In this embodiment, the step of forming the first protective layer 18 is to cover the first substrate 12 and the black matrix 14 with a protective material layer, for example: photoresist material, including negative photoresist material or positive photoresist material . Then use a half-tone mask (half-tonemask) or a gray-scale mask (gray-tonemask), align the semi-transparent part to the position of the display opening 14a, that is, the position where the first recess 18a is to be formed, and match Another lithography process is performed to remove part of the photoresist material and simultaneously form the first protection layer 18 having the thick portion 18b, the thin portion 18c and the spacer portion 18d. In this way, the thin portion 18c is still covered on the first region 16a of the patterned color filter layer 16, and will not be damaged in subsequent other manufacturing processes. The material for making the first protective layer in the present invention is not limited to the above, and the method for forming the first protective layer in the present invention is not limited thereto. In a variant embodiment of the present invention, the material of the first protective layer 18 can also be a developable organic material, directly proceed to the steps of exposure and development, and simultaneously 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 can also be an organic material, and the step of forming the first protective layer can also etch or grind the thickness of the protective material layer to be the same as the thickness of the thick portion, so as to The thick part is formed first, and then another lithography process is performed to etch the first depression on the protective material layer to form the thin part. In addition, the first depression 18a of this embodiment has a depth, which can be between 1 micron and 3 microns, and the first protection layer 18 has a thickness T, which can be between 1 micron and 30 microns, wherein the thin part The first thickness T1 of the spacer part may be between 1 micron and 2 microns, the second thickness T2 of the spacer part may be between 2 microns and 6 microns, and the third thickness T3 of the thick part may be between 4 microns and 30 microns. between microns, but the present invention is not limited thereto. Moreover, the depth of the first depression can be adjusted by controlling the exposure energy of the lithography process.

Next, as shown in FIG. 4 , a second protection layer 20 such as silicon nitride, silicon oxide, silicon oxynitride or other organic materials is selectively covered on the first protection layer 18 . Subsequently, a metal pattern layer 22 , such as a grid-like metal pattern, is formed on the spacer portion 18 d. The fabrication method of the metal pattern layer 22 is, for example, dissolving conductive particles, such as silver particles, aluminum particles, copper particles, indium tin oxide particles, etc., in a solvent, such as a negative photoresist solvent, to form a solution, and apply the solution on the second protective layer 20. Then, an exposure process is performed to cure part of the solution located on the second region 16 b of the patterned color filter layer 16 , while other parts are not cured. Next, a developing process is performed to remove the uncured solution. Subsequently, the curing solution located on the second block 16b of the patterned color filter layer 16 is baked to remove the solvent in the curing solution, and the metal pattern layer 22 is formed on the spacer portion 18d, for example: a grid shape Metal pattern. It is worth noting that, in this embodiment, the second protective layer 20 is covered on the first protective layer 18 before forming the metal pattern layer 22, so that the metal pattern layer 22 can have better adhesion to the second protective layer 20, In order to avoid peeling off of the metal pattern layer 22 due to poor adhesion with the first protection layer 18 .

Next, as shown in FIG. 5, FIG. 6 and FIG. 7, a first spacer 24 is formed on the second protection layer 20 and the metal pattern layer 22, and the metal pattern layer 22 can be used to assist in raising the first spacer 24, The material of the first spacer 24 is, for example: photoresist material, wherein the first spacer 24 covers the metal pattern layer 22 along a first direction D1, but only covers part of the metal pattern layer 22 along a second direction D2 perpendicular to the first direction. , and part of the metal pattern layer 22 is exposed. Then, a transparent electrode layer 26 is covered on the second protection layer 20, the metal pattern layer 22 and the first spacer 24, and the transparent electrode layer 26 can be in contact with the exposed part of the metal pattern layer 22 to be electrically connected to each other. , this design can increase the contactable area between the first spacer 24 and the transparent electrode layer 26 . So far, the color filter substrate 27 of this embodiment has been completed. In this embodiment, the first spacer 24 has a height between 1 micron and 10 microns, but not limited thereto.

Then, as shown in FIG. 8 , a second substrate 28 is provided, such as a transparent substrate such as glass, plastic or quartz, but is not limited thereto. It has a second inner surface 28a, and an organic light emitting display element 30 is formed on the second inner surface 28a of the second substrate 28 . So far, the array substrate 32 of this embodiment has been completed. 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 pass through the patterned color filter layer 16 from the display opening 14 a to exit the display opening 14 a, so as to form the organic light emitting display panel 10 of this embodiment.

In this embodiment, the steps of forming the organic light emitting display device 30 are described as follows, but not limited thereto. First, an active device layer 34 is formed on the second inner surface 28a of the second substrate 28, wherein the active device layer 34 includes an active device 48, such as a thin film transistor, and a planar layer 50 covering the active device 48 and the first The second substrate 28 has a through hole 50 a exposing an electrode of the active device 48 . Then, a first electrode 36 is formed on the planar 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 planar layer 50, wherein the first electrode 36 can be made of, for example, metal with reflective properties and The first electrode 36 is made of conductive material with high work function, and the position of the first electrode 36 is set corresponding to the display opening 14 of the color filter substrate 27 . Subsequently, a barrier wall 38 is formed on the active device layer 34 and the first electrode 36, and the barrier wall 38 has a hole 38a exposing the first electrode 36, wherein the barrier wall 38 is made of an insulating material. Next, a second spacer 40, such as a photoresist material, is formed on the retaining wall 38, and a light-emitting layer 42 and a second electrode 44 are sequentially covered on the exposed first electrode 36, wherein the light-emitting layer 42 and the first electrode 44 are covered. The second electrode 44 extends to cover the retaining wall 38 and the second spacer 40 , so the second electrode 44 can have a second recess 44 a aligned with the hole 38 a.

Moreover, the first electrode 36, the second electrode 44 and the light-emitting layer 42 therebetween form an organic light-emitting diode 46 for generating a white light, and is aligned with the display opening 14a, so that the white light can be directed upwards The first block 16a of the patterned color filter layer 16 displays light with the color of the patterned color filter layer 16 on the outside of the organic light emitting display panel 10 . The first electrode 36 can be used as the anode of the OLED 46 due to its high work function, and is electrically connected to the electrode of the active device 48 through the through hole 50a of the planar layer 50, so that the active device 48 can control the operation of the OLED 46. Generates a gray scale of light. The second electrode 44 can be made of a transparent conductive material with a low work function, such as silver or magnesium with a certain thickness and can be transparent, and can be used as a cathode of the OLED 46 . In addition, the light-emitting layer 42 is made of organic light-emitting materials that can generate white light. For example, the organic light-emitting materials are stacked red, green and blue light-emitting organic light-emitting materials, or the organic light-emitting materials are blue-light organic light-emitting materials combined with yellow light. Phosphor, so that the OLED 46 can generate white light. It is worth mentioning that the first electrode 36 of this embodiment is made of a conductive material with reflective properties, and the second electrode 44 is made of a transparent conductive material, so the area between the first electrode 36 and the second electrode 44 The light generated by the light-emitting layer 42 can not only be emitted from the second electrode 44, but also be reflected by the first electrode 36, and then emitted to the second electrode 44, so as to effectively improve light utilization efficiency. It can be seen from the above that the organic light emitting display panel of this embodiment is a top emission type organic light emitting display panel. The organic light emitting diode of the present invention is not limited to be composed of the first electrode, the light emitting layer and the second electrode, but may also include an electron injection layer and a hole injection layer, but is not limited thereto.

It should be noted that when assembling the array substrate 32 and the color filter substrate 27, the second spacer 40 is arranged corresponding to the first spacer 24, so that the second electrode 44 covering the second spacer 40 and the second electrode 44 covering the first spacer 40 are arranged. The transparent conductive layers 26 on a spacer 24 are in contact and are electrically connected to each other. In this way, the second electrode 44 of the organic light emitting display panel 10 of this embodiment can be effectively electrically connected to the peripheral driving elements through the transparent conductive layer 26 and the metal pattern layer 22, so as to avoid the gap between the second electrode 44 and the peripheral driving elements due to being too thin. There is an excessive 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 aligned with the first recess 18a, so that the first recess 18a There may be a gap H between the bottom of and the organic light emitting display element 30, which is between 5 microns and 30 microns, 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 will not protrude toward the OLED 46 , so that the OLED can be prevented from being damaged.

The organic light emitting display panel and the manufacturing method thereof of the present invention are not limited to the above-mentioned embodiments. The following will continue to disclose other embodiments or variants of the present invention. However, in order to simplify the description and highlight the differences between the embodiments or variants, the same reference numerals are used to mark the same components, and the repetitive parts will not be repeated.

Please refer to FIG. 9 to FIG. 11 , and refer to FIG. 1 to FIG. 3 together. 9 to 11 are schematic diagrams of a manufacturing method of an organic light emitting display panel according to a second embodiment of the present invention, wherein FIG. 11 is a schematic cross-sectional view of the organic light emitting display panel according to the second embodiment of the present invention. The fabrication method of this embodiment is the same as the fabrication method of the first embodiment before the step of forming the first protective layer 18 , as shown in FIGS. 1 to 3 , so details will not be repeated here. Next, as shown in FIG. 8 , compared with the first embodiment, the fabrication method of this embodiment forms the metal pattern layer 22 directly on the spacer portion 18d of the first protection layer 18 after forming the first protection layer 18 , and No second protective layer was formed. Moreover, the material of the first protective layer 18 in this embodiment can be selected to have better adhesion to the metal pattern layer 22 . Then, as shown in FIG. 10 , a first spacer 102 is formed on the metal pattern layer 22 . Subsequently, the transparent electrode layer 26 is covered on the first protection layer 18 , the metal pattern layer 22 and the first spacer 102 . So far, the color filter substrate 104 of this embodiment has been completed. In this embodiment, the difference between the first spacer 102 of this embodiment and the first spacer of the first embodiment is that the first spacer 102 of this embodiment is only disposed on the metal pattern layer 22 and does not extend to The two sides of the metal pattern layer 22 expose the side edges of the metal pattern layer 22 . Therefore, the transparent electrode layer 26 can be electrically connected to more parts of the metal pattern layer 22 , thereby reducing the electrical connection of the transparent electrode layer 26 to peripheral driving elements more effectively. 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 panel 100 of this embodiment. In this embodiment, the array substrate 106 does not include the second spacer, but it is not limited thereto. In other embodiments of the present invention, the array substrate may also include a second spacer.

Please refer to FIG. 12 to FIG. 13 , and refer to FIG. 1 to FIG. 3 together. 12 to 13 are schematic diagrams of a manufacturing method of an organic light emitting display panel according to a third embodiment of the present invention, wherein FIG. 13 is a schematic cross-sectional view of the organic light emitting display panel according to the third embodiment of the present invention. The fabrication method of this embodiment is the same as the fabrication method of the first embodiment before the step of forming the first protective layer 18 , as shown in FIGS. 1 to 3 , so details will not be repeated here. Next, as shown in FIG. 11 , compared with the first embodiment, the fabrication method of this embodiment directly forms a first spacer 202 on the spacer portion 18d of the first protection layer 18 after forming the first protection layer 18 , The second protection layer and the metal pattern layer are not formed. So far, the color filter substrate 204 of this embodiment has been completed. 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 this embodiment. In this embodiment, the array substrate 206 does not include the second spacer, but it is not limited thereto. In other embodiments of the present invention, the array substrate may also include a second spacer.

To sum up, the organic light-emitting display panel of the present invention has a first depression at the position corresponding to the display opening in the first protective layer, and the organic light-emitting diode is also arranged corresponding to the display opening, thereby the bottom of the first depression and the organic light emitting diode can be enlarged. The gap between the display elements is such that when the color filter substrate and the array substrate are combined, the particles will not protrude toward the organic light emitting diodes, thereby preventing the organic light emitting diodes from being damaged.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (27)

1. A method for manufacturing an organic light-emitting display panel, characterized in that it comprises: providing a first substrate having a first inner surface; A black matrix is formed on the first substrate on the first inner surface, and the black matrix has at least one display opening respectively exposing the first substrate; A patterned color filter layer is formed on the first substrate on the first inner surface, and has at least a first block and a second block, and the first block covers the first substrate of the display opening On, the second block is set on the black matrix; A first protection layer is formed on the first substrate on the first inner surface, covering the patterned color filter layer and the black matrix, and the first protection layer has a first depression, wherein the first depression is located at above the first block of the patterned color filter layer and aligned with the display opening; forming a first spacer on the first protection 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 has an organic light-emitting display element, and is arranged on the second on the inner surface of the second substrate and aligned with the display opening; The first protective layer is a single film layer with a thick portion and a thin portion, and the thin portion is located at the bottom of the first depression. 2 . The method for manufacturing an organic light emitting display panel according to claim 1 , wherein the first protective layer uses a halftone mask or a grayscale mask to form the first depression. 3 . 3. The method for manufacturing an organic light emitting display panel according to claim 1, wherein there is a gap between the bottom of the first recess and the organic light emitting display element, and the gap is between 5 microns and 30 microns, And the extending direction of the gap is perpendicular to the first inner surface. 4. The method of manufacturing an organic light emitting display panel according to claim 1, wherein the first protective layer has a thickness, and the thickness of the thin portion of the first protective layer is between 1 micron and 2 microns, The thickness of the thick portion of the first protection layer is between 4 microns and 30 microns. 5 . The method for manufacturing an organic light emitting display panel according to claim 1 , wherein the first depression has a depth between 1 micron and 3 microns. 6 . The method for manufacturing an organic light emitting display panel according to claim 1 , wherein the first spacer has a height between 1 μm and 10 μm. 7 . The method for manufacturing an organic light emitting display panel according to claim 1 , further comprising covering a second protective layer on the first protective layer. 8. The method for manufacturing an organic light emitting display panel according to claim 1, wherein the organic light emitting display element comprises: an active element disposed on the second substrate on the second inner surface; and An organic light emitting diode disposed on the second substrate on the second inner surface, the organic light emitting diode at least includes a first electrode, a light emitting layer and a second electrode, the light emitting layer is disposed on the first electrode and the first electrode Between the second electrodes, the first electrode is electrically connected to the active element. 9. The method of manufacturing an organic light emitting display panel according to claim 8, further comprising forming a barrier wall on the active device and the first electrode, and the barrier wall has a hole exposing the first electrode. an electrode. 10 . The method of manufacturing an organic light emitting display panel according to claim 9 , wherein the second electrode covers the first electrode in the hole, and has a second recess aligned with the hole. 11 . 11. The method for manufacturing an organic light emitting display panel according to claim 9, wherein the step of forming the organic light emitting display element further comprises forming a second spacer on the retaining wall. 12. The method for manufacturing an organic light-emitting display panel according to claim 8, further comprising: Before the step of forming the first spacer, a metal pattern layer is formed on the first protection layer, and the metal pattern layer is located between the first spacer and the first protection layer; and After the step of forming the first spacer, a transparent electrode layer is covered on the first protective layer, the metal pattern layer and the first spacer. 13. The method for manufacturing an organic light emitting display panel according to claim 12, wherein the second electrode is electrically connected to the transparent electrode layer. 14. The method for manufacturing an organic light emitting display panel according to claim 12, further comprising forming a second spacer disposed between the second electrode and the second substrate. 15. An organic light emitting display panel, characterized in that it comprises: 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; A patterned color filter layer has at least a first block and a second block, the first block is covered on the first substrate of the display opening, and the second block is arranged 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 depression located above the first block of the patterned color filter layer, and aligned with the display opening; a first spacer, disposed on the first protection layer, and the first spacer is located above the second block of the patterned color filter layer; a second substrate, disposed opposite to the first substrate, the second substrate has a second inner surface facing the first inner surface of the first substrate; and an organic light emitting display element, disposed on the second substrate on the second inner surface, and aligned with the display opening; The first protective layer is a single film layer with a thick portion and a thin portion, and the thin portion is located at the bottom of the first depression. 16. The organic light emitting display panel according to claim 15, wherein there is a gap between the bottom of the first recess and the organic light emitting display element, the gap is between 5 microns and 30 microns, and the gap The extending direction is perpendicular to the first inner surface. 17. The organic light emitting display panel according to claim 15, wherein the first protective layer has a thickness, the thickness of the thin portion of the first protective layer is between 1 micrometer and 2 micrometers, and the first protective layer The thickness of the thick portion of the protection layer is between 4 microns and 30 microns. 18 . The organic light emitting display panel according to claim 15 , wherein the first depression has a depth between 1 μm and 10 μm. 19. The organic light emitting display panel according to claim 15, wherein the first spacer has a height between 1 micron and 10 microns. 20. The organic light emitting display panel according to claim 15, further comprising a second protection layer disposed between the patterned color filter layer and the first protection layer. 21. The organic light emitting display panel according to claim 15, wherein the organic light emitting display element comprises: an active element disposed on the second substrate on the second inner surface; and An organic light emitting diode disposed on the second substrate on the second inner surface, the organic light emitting diode at least includes a first electrode, a light emitting layer and a second electrode, the light emitting layer is disposed on the first electrode and the first electrode Between the second electrodes, the first electrode is electrically connected to the active element. 22. The organic light emitting display panel according to claim 21, wherein the organic light emitting display element further comprises a retaining wall located between the light emitting layer and the active device, and the retaining wall has a hole corresponding to the First electrode setup. 23. The organic light emitting display panel according to claim 22, wherein the second electrode has a second recess aligned with the hole. 24. The organic light emitting display panel according to claim 21, further comprising: a metal pattern layer disposed between the first spacer and the first protection layer; and A transparent electrode layer covers the first protection layer, the metal pattern layer and the first spacer, and is in contact with and electrically connected with the metal pattern layer. 25. The organic light emitting display panel according to claim 24, wherein the first spacer covers part of the metal pattern layer. 26. The organic light emitting display panel according to claim 24, wherein the second electrode is electrically connected to the transparent electrode layer. 27. The organic light emitting display panel according to claim 24, further comprising a second spacer disposed between the second electrode and the second substrate.