CN109473464B

CN109473464B - Display panel and preparation method thereof

Info

Publication number: CN109473464B
Application number: CN201811367990.7A
Authority: CN
Inventors: 田宏伟; 牛亚男; 李栋; 王纯阳; 刘政
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2018-11-16
Filing date: 2018-11-16
Publication date: 2021-01-26
Anticipated expiration: 2038-11-16
Also published as: CN109473464A

Abstract

The embodiment of the invention provides a display panel and a preparation method thereof, relates to the technical field of display, and improves the light emitting efficiency of a light emitting device on the basis of improving the anode reflection problem. The display panel includes: the color filter comprises a substrate, a luminescent layer on the substrate, and a first color resist layer, a second color resist layer and a third color resist layer which are arranged on the light-emitting side of the luminescent layer; the light-emitting layer comprises a plurality of light-emitting devices, and one light-emitting device is arranged in each first color sub-pixel, each second color sub-pixel and each third color sub-pixel; the thickness of the first color resistance layer in part of the first color sub-pixels is a first thickness, the thickness of the first color resistance layer in the rest part of the first color sub-pixels is a second thickness, and the first thickness is larger than the second thickness; the first color sub-pixels in the first color resistance layer where the second thickness part is located are uniformly distributed; the second color resist layer is located in at least a portion of the second color sub-pixels, and the third color resist layer is located in at least a portion of the third color sub-pixels.

Description

Display panel and preparation method thereof

Technical Field

The invention relates to the technical field of display, in particular to a display panel and a preparation method thereof.

Background

Organic electroluminescent diodes (OLEDs for short) are becoming the mainstream of the Display field due to their excellent properties such as low power consumption, high color saturation, wide viewing angle, thin thickness, and flexibility, and can be widely applied to terminal products such as smart phones, tablet computers, and televisions.

At present, flexible OLED display panels are showing an increasingly important trend, however, when bent at a smaller radius, the polarizer attached to the flexible OLED display panel is flexibly broken; meanwhile, the OLED display panel comprises an OLED device, the OLED device comprises an anode, the anode is made of metal generally, and if the OLED display panel is irradiated outdoors or under external environment light such as strong light, the problem that the display effect of the OLED display panel is poor due to the fact that the anode reflects light easily is solved.

In the prior art, a Color Filter On Encap (Color Filter On Encap, for short, COE) is arranged On a package cover plate to simultaneously solve the two problems, On one hand, the Color Filter layer is usually made of resin with high flexibility and can replace a polarizer, so that the polarizer is prevented from being broken when the Color Filter layer is bent with a small radius; on the other hand, the color filter layer can shield the external environment light in the sub-pixel area to reduce the intensity of the external environment light irradiated on the anode, so that the problem of poor display effect of the OLED display panel caused by anode reflection is solved.

However, the color filter layer also has a shielding effect on light emitted from the OLED device, resulting in partial loss of light emitted from the OLED device, and although the light loss amount caused by the color filter layer is smaller than the light loss amount caused by the polarizer, the overall light emitting efficiency of the OLED device is considered, the existing COE technology still has certain influence on the overall light emitting and display effects of the OLED device, so that power consumption under a certain brightness condition is improved, and the service life of the OLED device is shortened.

Disclosure of Invention

Embodiments of the present invention provide a display panel and a manufacturing method thereof, which can improve the light-emitting efficiency of a light-emitting device and increase the service life of the light-emitting device on the basis of improving the problem of anode reflection.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in one aspect, there is provided a display panel including: the color filter comprises a substrate, a light emitting layer arranged on the substrate, and a first color resistance layer, a second color resistance layer and a third color resistance layer which are arranged on the light emitting side of the light emitting layer; the first color, the second color and the third color are three primary colors; the light emitting layer includes a plurality of light emitting devices, one light emitting device is disposed in each first color sub-pixel, one light emitting device is disposed in each second color sub-pixel, and one light emitting device is disposed in each third color sub-pixel; the thickness of the first color resistance layer in part of the first color sub-pixels is a first thickness, the thickness of the first color resistance layer in the rest part of the first color sub-pixels is a second thickness, and the first thickness is larger than the second thickness; the first color sub-pixels in which the second thickness parts are positioned in the first color resistance layer are uniformly distributed; the second color resistance layer is located in at least part of the second color sub-pixels, and the third color resistance layer is located in at least part of the third color sub-pixels.

Optionally, the thickness of the second color resist layer in a part of the second color sub-pixels is a third thickness, and the thickness of the second color resist layer in the other part of the second color sub-pixels is a fourth thickness, where the third thickness is greater than the fourth thickness; and the second color sub-pixels in which the fourth thickness parts of the second color resistance layer are positioned are uniformly distributed.

Optionally, the thickness of the third color resist layer in a part of the third color sub-pixels is a fifth thickness, and the thickness of the remaining part of the third color sub-pixels is a sixth thickness, where the fifth thickness is greater than the sixth thickness; and the third color sub-pixels in which the sixth thickness part of the third color resistance layer is positioned are uniformly distributed.

Optionally, the second thickness is 0, and a ratio of the first color sub-pixels in which the second thickness portion of the first color resist layer is located in all the first color sub-pixels is less than or equal to 50%; or, the second thickness is 20% to 80% of the first thickness, and a ratio of the first color sub-pixels in which the second thickness portion of the first color resist layer is located in all the first color sub-pixels is less than or equal to 60%.

Optionally, the fourth thickness of the second color resist layer is 0, and the ratio of the second color sub-pixels in which the fourth thickness portion of the second color resist layer is located in all the second color sub-pixels is less than or equal to 50%; or, the fourth thickness is 20% to 80% of the third thickness, and the ratio of the second color sub-pixels in which the fourth thickness portion of the second color resist layer is located to all the second color sub-pixels is less than or equal to 60%; and/or the sixth thickness of the third color resist layer is 0, and the proportion of the third color sub-pixels in which the sixth thickness part of the third color resist layer is located in all the third color sub-pixels is less than or equal to 50%; or, the sixth thickness is 20% to 80% of the fifth thickness, and a ratio of the third color sub-pixels in which the sixth thickness portion of the third color resist layer is located in all the third color sub-pixels is less than or equal to 60%.

Optionally, the light emitting device further comprises an encapsulation layer for encapsulating the light emitting layer; the first color resistance layer, the second color resistance layer and the third color resistance layer are all arranged on one side, far away from the light emitting layer, of the packaging layer.

Optionally, the display device further comprises a thin film transistor; the light-emitting layer comprises an anode, a light-emitting functional layer and a cathode which are sequentially stacked on the substrate; and the drain electrode of the thin film transistor is electrically connected with the anode.

Optionally, the first color sub-pixel is a blue sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a green sub-pixel; the second color resistance layer is positioned in all the second color sub-pixels, and the thickness of the second color resistance layer is a third thickness; the third color resist layer is located in all the third color sub-pixels, and the thickness of the third color resist layer is a fifth thickness.

In another aspect, a method for manufacturing a display panel is provided, the display panel including a substrate, a light emitting layer disposed on the substrate; the light emitting layer includes a plurality of light emitting devices, one light emitting device is disposed in each first color sub-pixel, one light emitting device is disposed in each second color sub-pixel, and one light emitting device is disposed in each third color sub-pixel; the preparation method comprises the following steps: forming a first color resistance layer, a second color resistance layer and a third color resistance layer on the light emergent side of the light emitting layer by adopting a photoetching process; the first color, the second color and the third color are three primary colors; the thickness of the first color resistance layer in part of the first color sub-pixels is a first thickness, the thickness of the first color resistance layer in the rest part of the first color sub-pixels is a second thickness, and the first thickness is larger than the second thickness; the first color sub-pixels in which the second thickness parts are positioned in the first color resistance layer are uniformly distributed; the second color resistance layer is located in at least part of the second color sub-pixels, and the third color resistance layer is located in at least part of the third color sub-pixels.

Optionally, the thickness of the second color resist layer in a part of the second color sub-pixels is a third thickness, and the thickness of the second color resist layer in the other part of the second color sub-pixels is a fourth thickness, where the third thickness is greater than the fourth thickness; the second color sub-pixels in which the fourth thickness parts of the second color resistance layer are positioned are uniformly distributed; and/or the thickness of the third color resist layer in part of the third color sub-pixels is a fifth thickness, the thickness of the third color resist layer in the rest part of the third color sub-pixels is a sixth thickness, and the fifth thickness is greater than the sixth thickness; and the third color sub-pixels in which the sixth thickness part of the third color resistance layer is positioned are uniformly distributed.

The embodiment of the invention provides a display panel and a preparation method thereof, wherein the thickness of a first color resistance layer in part of first color sub-pixels is a first thickness, the thickness of the first color resistance layer in the other part of the first color sub-pixels is a second thickness, and the first thickness is larger than the second thickness, so that the light emitting efficiency of a light emitting device can be improved by reducing the thickness of part of the first color resistance layer on the basis of shielding ambient light by using the first color resistance layer, the power consumption under a certain brightness condition is further reduced, and the service life of the light emitting device is prolonged; meanwhile, the first color sub-pixels in which the second thickness parts of the first color resistance layer are positioned are uniformly distributed, so that the problem that the display effect is influenced due to different thicknesses of the first color resistance layer in different first color sub-pixels can be solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 6 is a distribution diagram of a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel according to an embodiment of the invention.

Reference numerals:

10-a substrate; 111-a first color resist layer; 112-a second color resist layer; 113-a third color resist layer; 12-a black matrix; 14-a light emitting device; 141-an anode; 142-a light-emitting functional layer; 143-cathode; 15-a pixel defining layer; 16-an encapsulation layer; 17-a thin film transistor; 171-a gate; 172-a gate insulating layer; 173-an active layer; 174-source; 175-drain electrode; 21-blue sub-pixel; 22-red subpixel; 23-green sub-pixel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a display panel, as shown in fig. 1 to 3, including: a substrate 10, a light emitting layer disposed on the substrate 10, and a first color resist layer 111, a second color resist layer 112, and a third color resist layer 113 disposed on a light emitting side of the light emitting layer; the first color, the second color and the third color are three primary colors; the light emitting layer includes a plurality of light emitting devices 14, one light emitting device 14 is provided in each first color sub-pixel, one light emitting device 14 is provided in each second color sub-pixel, and one light emitting device 14 is provided in each third color sub-pixel; the thickness of the first color resist layer 111 in part of the first color sub-pixels is a first thickness, the thickness in the rest of the first color sub-pixels is a second thickness, and the first thickness is greater than the second thickness; the first color sub-pixels in the first color resist layer 111 where the second thickness portions are located are uniformly distributed; second color resist layer 112 is located in at least a portion of the second color sub-pixels and third color resist layer 113 is located in at least a portion of the third color sub-pixels.

Here, the black matrix 12 is further included between the second color resist layer 112, between the second color resist layer 112 and the third color resist layer 113, and between the first color resist layer 111 and the third color resist layer 113, among the adjacent first color resist layers 111.

First, the first color resist layer 111, the second color resist layer 112, and the third color resist layer 113 may be formed, and then the black matrix 12 may be formed; the black matrix 12 may be formed first, and then the first color resist layer 111, the second color resist layer 112, and the third color resist layer 113 may be formed.

First, the display panel includes a light emitting layer capable of self-emitting light, that is, the display panel is a self-emitting display panel, for example, the display panel is an OLED display panel or a quantum dot display panel.

Second, the light emitting device 14 may have a top emission structure, a bottom emission structure, or a double-sided emission structure.

When the light emitting device 14 is top-emitting, the light emitting side of the light emitting layer is the side of the light emitting layer away from the substrate 10, as shown in fig. 2 and 3, the first color resist layer 111, the second color resist layer 112 and the third color resist layer 113 are disposed on the side of the light emitting layer away from the substrate 10; when the light-emitting layer is bottom-emitting, the light-emitting side of the light-emitting layer is the side of the light-emitting layer close to the substrate 10, as shown in fig. 1, the first color resist layer 111, the second color resist layer 112 and the third color resist layer 113 are disposed on the side of the light-emitting layer close to the substrate 10; when the light-emitting layer is double-sided light-emitting, the light-emitting side of the light-emitting layer is the side of the light-emitting layer close to and away from the substrate 10. The first color resist layer 111, the second color resist layer 112, and the third color resist layer 113 may be disposed only on the side of the light-emitting layer close to the substrate 10, only on the side of the light-emitting layer away from the substrate 10, or on the side of the light-emitting layer close to and away from the substrate 10.

Third, the first color, the second color, and the third color may be red, green, and blue with respect to each other; alternatively, the first color, the second color, and the third color may be magenta, cyan, and yellow, respectively.

Fourthly, the specific thickness values of the first thickness and the second thickness are not limited, specifically, the actual requirements are met.

The difference in thickness between the second thickness and the first thickness is not defined.

Specifically, the second thickness is 0, and the ratio of the first color sub-pixels in the first color resist layer 111 where the second thickness portion is located in all the first color sub-pixels is less than or equal to 50%.

For example, if the display panel includes 1000 first color sub-pixels, the number of first color sub-pixels in which the portion of the first color resist layer 111 with a thickness of 0 is located is less than or equal to 500.

Here, when the second thickness is 0, the ratio of the first color sub-pixels in the first color resist layer 111 where the second thickness portion is located to all the first color sub-pixels is preferably 3% to 5%.

Or, the second thickness is 20% to 80% of the first thickness, and the proportion of the first color sub-pixels in the first color resist layer 111 where the second thickness portion is located in all the first color sub-pixels is less than or equal to 60%.

For example, if the display panel includes 1000 first color sub-pixels, the thickness of the first color resist layer 111 with the first thickness is 1 μm, the second thickness is 0.2 to 0.8 μm, and the number of the first color sub-pixels where the portion with the thickness of 0.2 to 0.8 μm of the first color resist layer 111 is located is less than or equal to 600.

Fifth, the second color resist layer 112 is located in at least a part of the second color sub-pixels, wherein the second color resist layer 112 may be located in all the second color sub-pixels or in a part of the second color sub-pixels.

When the second color resists 112 may be located in all the second color sub-pixels, the thicknesses of the plurality of second color resists 112 are equal; alternatively, the thicknesses of the second color resist layers 112 in the second color sub-pixels are not equal.

When the thicknesses of the second color resists 112 in the second color sub-pixels are not equal, the thicknesses of all the second color resists 112 may be different, or the thicknesses of some second color resists 112 may be equal.

The third color resist layer 113 is located in at least a part of the third color sub-pixels, wherein the third color resist layer 113 may be located in all the third color sub-pixels or in a part of the third color sub-pixels.

When the third color resists 113 may be located in all the third color sub-pixels, the thicknesses of the plurality of third color resists 113 are equal; alternatively, the third color resist layer 113 may have unequal thicknesses in the third color sub-pixels.

When the thicknesses of the third color resist layers 113 in the third color sub-pixels are not equal, the thicknesses of all the third color resist layers 113 may be different, or the thicknesses of some third color resist layers 113 may be equal.

The embodiment of the invention provides a display panel, wherein the thickness of a first color resistance layer 111 in a part of first color sub-pixels is a first thickness, the thickness of the first color resistance layer 111 in the other part of the first color sub-pixels is a second thickness, and the first thickness is larger than the second thickness, so that the light emitting efficiency of a light emitting device 14 can be improved by reducing the thickness of the part of the first color resistance layer 111 on the basis of shielding ambient light by using the first color resistance layer 111, the power consumption under a certain brightness condition is further reduced, and the service life of the light emitting device 14 is prolonged; meanwhile, since the first color sub-pixels in which the second thickness portions of the first color resist layer 111 are located are uniformly distributed, the problem that the display effect is affected due to the different thicknesses of the first color resist layer 111 in the different first color sub-pixels can be avoided.

Optionally, as shown in fig. 2, the thickness of the second color resist layer 112 in a part of the second color sub-pixels is a third thickness, and the thickness in the remaining part of the second color sub-pixels is a fourth thickness, where the third thickness is greater than the fourth thickness; the second color sub-pixels of the second color resist layer 112 where the fourth thickness portion is located are uniformly distributed.

It should be noted that the first thickness, the third thickness and the first thickness may be equal or may not be equal.

Preferably, the third thickness is equal to the first thickness, so that a portion of the first thickness in the first color resist layer 111 and a portion of the third thickness in the second color resist layer 112 can be formed at the same time.

The second and fourth thicknesses may or may not be equal to the second thickness.

Preferably, the fourth thickness is equal to the second thickness, so that, in the case where the first thickness and the third thickness are equal, the portion of the second thickness in the first color resist layer 111 and the portion of the fourth thickness in the second color resist layer 112 can be formed at the same time.

Third, no specific thickness value of the third thickness and the fourth thickness is defined, specifically, subject to actual requirements.

The thickness difference between the fourth thickness and the third thickness is not limited.

Specifically, the fourth thickness is 0, and the ratio of the second color sub-pixels in the second color resist layer 112 where the fourth thickness portion is located in all the second color sub-pixels is less than or equal to 50%.

For example, if the display panel includes 1000 second color sub-pixels, the number of second color sub-pixels in which the portion of the second color resist layer 112 with a thickness of 0 is located is less than or equal to 500.

Here, when the fourth thickness is 0, the second color sub-pixels of the second color resist layer 112 in which the fourth thickness portion is located preferably have a ratio of 3% to 5% in all the second color sub-pixels.

Or, the fourth thickness is 20% to 80% of the third thickness, and the proportion of the second color sub-pixels in the second color resist layer 112 where the fourth thickness portion is located in all the second color sub-pixels is less than or equal to 60%.

For example, if the display panel includes 1000 second color sub-pixels, and the thickness of the second color resist layer 112 with the third thickness is 1 μm, the fourth thickness is 0.2 to 0.8 μm, and the number of the second color sub-pixels where the portion with the thickness of 0.2 to 0.8 μm of the second color resist layer 112 is located is less than or equal to 600.

In the embodiment of the present invention, the thickness of the second color resist layer 112 in a part of the second color sub-pixels is a third thickness, the thickness of the second color resist layer 112 in the other part of the second color sub-pixels is a fourth thickness, and the third thickness is greater than the fourth thickness, so that the light emitting efficiency of the light emitting device 14 can be improved by reducing the thickness of the part of the second color resist layer 112 on the basis of shielding ambient light by using the second color resist layer 112, and further, the power consumption under a certain brightness condition can be reduced, and the service life of the light emitting device 14 can be prolonged; meanwhile, since the second color sub-pixels in which the fourth thickness portions of the second color resist layer 112 are located are uniformly distributed, the problem that the display effect is affected due to the different thicknesses of the second color resist layer 112 in the different second color sub-pixels can also be avoided.

Optionally, as shown in fig. 3, the thickness of the third color resist layer 113 in a part of the third color sub-pixels is a fifth thickness, and the thickness in the remaining part of the third color sub-pixels is a sixth thickness, where the fifth thickness is greater than the sixth thickness; the third color sub-pixels of the third color resist layer 113 where the sixth thickness portion is located are uniformly distributed.

It should be noted that the first and fifth thicknesses may be equal to the first thickness only, or the fifth thickness may be equal to the third thickness only, or the fifth thickness may be equal to the first thickness and the third thickness; the fifth thickness may also be different from both the first thickness and the third thickness.

Preferably, the fifth thickness is equal to the third thickness and also equal to the first thickness, so that a portion of the first thickness in the first color resist layer 111, a portion of the third thickness in the second color resist layer 112, and a portion of the fifth thickness in the third color resist layer 113 can be formed at the same time.

Second, the sixth thickness may be equal to only the second thickness, or the sixth thickness may be equal to only the fourth thickness, or the sixth thickness may be equal to both the second thickness and the fourth thickness; the sixth thickness may also be different from both the second thickness and the fourth thickness.

Preferably, the sixth thickness is equal to the fourth thickness and equal to the second thickness, so that, when the fifth thickness is equal to the third thickness and the first thickness, the second thickness portion of the first color resist layer 111, the fourth thickness portion of the second color resist layer 112, and the sixth thickness portion of the third color resist layer 113 can be formed at the same time.

Thirdly, the specific thickness values of the fifth thickness and the sixth thickness are not limited, specifically, subject to the actual requirement.

The thickness difference between the sixth thickness and the fifth thickness is not limited.

Specifically, the sixth thickness is 0, and the ratio of the third color sub-pixels in which the sixth thickness portion of the third color resist layer 113 is located in all the third color sub-pixels is less than or equal to 50%.

For example, if the display panel includes 1000 third color sub-pixels, the number of the third color sub-pixels in which the portion of the third color resist layer 113 with the thickness of 0 is located is less than or equal to 500.

Here, when the sixth thickness is 0, the third color sub-pixels of the third color resist layer 113 in which the sixth thickness portion is located preferably have a ratio of 3% to 5% in all the third color sub-pixels.

Or, the sixth thickness is 20% to 80% of the fifth thickness, and the proportion of the third color sub-pixels in which the sixth thickness portion of the third color resist layer 113 is located in all the third color sub-pixels is less than or equal to 60%. For example, if the display panel includes 1000 third color sub-pixels, and the thickness of the fifth-degree third color resist layer 113 is 1 μm, the sixth thickness is 0.2 to 0.8 μm, and the number of the third color sub-pixels where the portion of the third color resist layer 113 with the thickness of 0.2 to 0.8 μm is located is less than or equal to 600.

In the embodiment of the present invention, the thickness of the third color resist layer 113 in a part of the third color sub-pixels is a fifth thickness, the thickness in the remaining part of the third color sub-pixels is a sixth thickness, and the fifth thickness is greater than the sixth thickness, so that the light emitting efficiency of the light emitting device 14 can be improved by reducing the thickness of a part of the third color resist layer 113 on the basis of shielding ambient light by using the third color resist layer 113, thereby reducing power consumption under a certain brightness condition and increasing the service life of the light emitting device 14; meanwhile, since the third color sub-pixels in which the sixth thickness portion of the third color resist layer 113 is located are uniformly distributed, the problem that the display effect is affected due to the different thicknesses of the third color resist layer 113 in the different third color sub-pixels can also be avoided.

Optionally, as shown in fig. 2, the display panel further includes an encapsulation layer 16 for encapsulating the light emitting layer; the first color resist layer 111, the second color resist layer 112 and the third color resist layer 113 are disposed on a side of the encapsulation layer 16 away from the light emitting layer.

In the embodiment of the invention, the first color resist layer 111, the second color resist layer 112 and the third color resist layer 113 are arranged on the side of the packaging layer 16 away from the light-emitting layer, so that the light-emitting layer can be packaged immediately after the light-emitting layer is formed, and air, water vapor and the like are prevented from entering the light-emitting layer to influence the performance and the service life of the light-emitting layer.

On the basis, as shown in fig. 1, when the first color resist layer 111, the second color resist layer 112 and the third color resist layer 113 are disposed on the side of the light-emitting layer close to the substrate 10, for example, the first color resist layer 111, the second color resist layer 112 and the third color resist layer 113 are disposed on the side of the thin film transistor close to the substrate 10.

When the first color resist layer 111, the second color resist layer 112 and the third color resist layer 113 are disposed on the side of the light emitting layer away from the substrate 10, as shown in fig. 3, the first color resist layer 111, the second color resist layer 112 and the third color resist layer 113 may also be disposed on the side of the encapsulation layer 16 close to the light emitting layer. First, a first color resist layer 111, a second color resist layer 112, and a third color resist layer 113 may be formed on the encapsulation layer 16, and then the encapsulation layer 16 formed with the first color resist layer 111, the second color resist layer 112, and the third color resist layer 113 is bonded to the side of the light emitting layer away from the substrate 10 by an optical transparent adhesive.

Optionally, as shown in fig. 4, the display panel further includes a thin film transistor 17; the light-emitting layer includes an anode 141, a light-emitting functional layer 142, and a cathode 143, which are sequentially stacked on the substrate 10; the drain electrode 175 of the thin film transistor 17 is electrically connected to the anode 141.

On this basis, the thin film transistor 17 further includes a gate electrode 171, a gate insulating layer 172, an active layer 173, and a source electrode 174; a pixel defining layer 15 is also provided between the adjacent light emitting devices 14. The thin film transistor 17 is separated from the light emitting layer by a planarization layer.

First, the material of the active layer 173 is not limited, and may be made of amorphous silicon, oxide, organic material, or the like.

In addition, the type of the thin film transistor 17 is not limited, and may be a back channel type or an etch stop type, depending on the material of the active layer 173 and the process for forming the source and drain

electrodes

174 and 175.

Second, the structure of the thin film transistor 17 is not limited, and the thin film transistor 17 may be a bottom gate type, or a top gate type, or a double source drain.

Optionally, as shown in fig. 1 and fig. 6, the first color sub-pixel is a blue sub-pixel 21, the second color sub-pixel is a red sub-pixel 22, and the third color sub-pixel is a green sub-pixel 23; the second color resist layer 112 is located in all the second color sub-pixels, and the thickness of the second color resist layer 112 is a third thickness; the third color resist layer 113 is located in all the third color sub-pixels, and the thickness of the third color resist layer 113 is a fifth thickness. The thickness of the first color resist layer 111 in the blue sub-pixel indicated by black in fig. 6 is the second thickness.

In the embodiment of the present invention, since the blue light is attenuated most quickly and the service time is short, the thickness of the first color resist layer 111 in a part of the first color sub-pixels is the first thickness, the thickness of the first color resist layer 111 in the other part of the first color sub-pixels is the second thickness, the thicknesses of the second color resist layer 112 and the third color resist layer 113 are the third thickness and the fifth thickness, so that when the display panel displays a picture, the power consumption of the blue sub-pixel 21 is smaller than the power consumption of the red sub-pixel 22 and the green sub-pixel 23, so as to increase the service life of the light emitting device 14 corresponding to the blue sub-pixel 21. An embodiment of the present invention further provides a display panel, as shown in fig. 5, including: a substrate 10, a light emitting layer disposed on the substrate 10, and a first color resist layer 111, a second color resist layer 112, and a third color resist layer 113 disposed on a light emitting side of the light emitting layer; the first color, the second color and the third color are three primary colors; the light emitting layer includes a plurality of light emitting devices 14, one light emitting device 14 is provided in each first color sub-pixel, one light emitting device 14 is provided in each second color sub-pixel, and one light emitting device 14 is provided in each third color sub-pixel; the thickness of the first color resist layer 111 in a part of the first color sub-pixels is a first thickness, the rest part of the first color sub-pixels comprises a first area and a second area, the thickness of the first area is a first thickness, the thickness of the second area is a second thickness, and the first thickness is greater than the second thickness; the first color sub-pixels in the first color resist layer 111 where the second thickness portions are located are uniformly distributed; second color resist layer 112 is located in at least a portion of the second color sub-pixels and third color resist layer 113 is located in at least a portion of the third color sub-pixels.

Specifically, the second thickness is 0, and the area of the first color sub-pixels in which the second thickness portion of the first color resist layer 111 is located in all the first color sub-pixels is less than or equal to 50%.

Here, when the second thickness is 0, the area ratio of the first color sub-pixels in which the second thickness portion of the first color resist layer 111 is located in all the first color sub-pixels is preferably 3% to 5%.

Or, the second thickness is 20% to 80% of the first thickness, and the area percentage of the first color sub-pixels in the first color resist layer 111 where the second thickness portion is located in all the first color sub-pixels is less than or equal to 60%.

The embodiment of the invention provides a display panel, wherein the thickness of a first color resistance layer 111 in a part of first color sub-pixels is a first thickness, the rest of the first color sub-pixels comprise a first area and a second area, the thickness of the first area is the first thickness, the thickness of the second area is the second thickness, and the first thickness is larger than the second thickness, so that on the basis of shielding ambient light by using the first color resistance layer 111, the light emitting efficiency of a light emitting device 14 can be improved by reducing the thickness of the part of the first color resistance layer 111, the power consumption under a certain brightness condition is further reduced, and the service life of the light emitting device 14 is prolonged; meanwhile, since the first color sub-pixels in which the second thickness portions of the first color resist layer 111 are located are uniformly distributed, the problem that the display effect is affected due to the different thicknesses of the first color resist layer 111 in the different first color sub-pixels can be avoided.

Optionally, the thickness of the second color resist layer 112 in a part of the second color sub-pixels is a third thickness, and the rest part of the second color sub-pixels includes a third region and a fourth region, where the thickness of the third region is the third thickness, the thickness of the fourth region is the fourth thickness, and the third thickness is greater than the fourth thickness; the second color sub-pixels of the second color resist layer 112 where the fourth thickness portion is located are uniformly distributed.

Preferably, the fourth thickness is equal to the second thickness, so that the second thickness portion of the first color resist layer 111 and the fourth thickness portion of the second color resist layer 112 can be formed simultaneously.

Specifically, the fourth thickness is 0, and the area of the second color sub-pixel in which the fourth thickness portion of the second color resist layer 112 is located in all the second color sub-pixels is less than or equal to 50%.

Here, when the fourth thickness is 0, the area ratio of the second color sub-pixels in which the fourth thickness portion of the second color resist layer 112 is located in all the second color sub-pixels is preferably 3% to 5%.

Or, the fourth thickness is 20% to 80% of the third thickness, and an area ratio of the second color sub-pixels in which the fourth thickness portion of the second color resist layer 112 is located in all the second color sub-pixels is less than or equal to 60%.

In the embodiment of the present invention, the thickness of the second color resist layer 112 in a part of the second color sub-pixels is the third thickness, and the remaining part of the second color sub-pixels includes the third area and the fourth area, the thickness of the third area is the third thickness, the thickness of the fourth area is the fourth thickness, and the third thickness is greater than the fourth thickness, so that the light emitting efficiency of the light emitting device 14 can be improved by reducing the thickness of a part of the second color resist layer 112 on the basis of shielding ambient light by using the second color resist layer 112, thereby reducing power consumption under a certain brightness condition and increasing the service life of the light emitting device 14; meanwhile, since the second color sub-pixels in which the fourth thickness portions of the second color resist layer 112 are located are uniformly distributed, the problem that the display effect is affected due to the different thicknesses of the second color resist layer 112 in the different second color sub-pixels can also be avoided.

Optionally, the thickness of the third color resist layer 113 in a part of the third color sub-pixels is a fifth thickness, the rest of the third color sub-pixels includes a fifth region and a sixth region, the thickness of the fifth region is the fifth thickness, the thickness of the sixth region is the sixth thickness, and the fifth thickness is greater than the sixth thickness; the third color sub-pixels of the third color resist layer 113 where the sixth thickness portion is located are uniformly distributed.

Preferably, the sixth thickness is equal to the fourth thickness and equal to the second thickness, so that the second thickness portion of the first color resist layer 111, the fourth thickness portion of the second color resist layer 112, and the sixth thickness portion of the third color resist layer 113 can be formed at the same time.

Specifically, the sixth thickness is 0, and the area of the third color sub-pixel in which the sixth thickness portion of the third color resist layer 113 is located in all the third color sub-pixels is less than or equal to 50%.

Here, when the sixth thickness is 0, the area ratio of the third color sub-pixels in which the sixth thickness portion of the third color resist layer 113 is located in all the third color sub-pixels is preferably 3% to 5%.

Or, the sixth thickness is 20% to 80% of the fifth thickness, and an area ratio of the third color sub-pixels in which the sixth thickness portion of the third color resist layer 113 is located in all the third color sub-pixels is less than or equal to 60%.

In the embodiment of the present invention, the thickness of the third color resist layer 113 in a part of the third color sub-pixels is a fifth thickness, and the remaining part of the third color sub-pixels includes a fifth area and a sixth area, the thickness of the fifth area is the fifth thickness, the thickness of the sixth area is the sixth thickness, and the fifth thickness is greater than the sixth thickness, so that on the basis of shielding ambient light by using the third color resist layer 113, the light emitting efficiency of the light emitting device 14 can be improved by reducing the thickness of a part of the third color resist layer 113, thereby reducing power consumption under a certain brightness condition and increasing the service life of the light emitting device 14; meanwhile, since the third color sub-pixels in which the sixth thickness portion of the third color resist layer 113 is located are uniformly distributed, the problem that the display effect is affected due to the different thicknesses of the third color resist layer 113 in the different third color sub-pixels can also be avoided.

An embodiment of the present invention provides a method for manufacturing a display panel, as shown in fig. 1 to 3, the display panel includes a substrate 10, and a light emitting layer disposed on the substrate 10; the light emitting layer includes a plurality of light emitting devices 14, one light emitting device 14 is provided in each first color sub-pixel, one light emitting device 14 is provided in each second color sub-pixel, and one light emitting device 14 is provided in each third color sub-pixel; the preparation method comprises the following steps: forming a first color resist layer 111, a second color resist layer 112 and a third color resist layer 113 on the light emitting side of the light emitting layer by adopting a photoetching process; the first color, the second color and the third color are three primary colors; the thickness of the first color resist layer 111 in a part of the first color sub-pixels is a first thickness, the thickness in the other part of the first color sub-pixels is a second thickness, and the first thickness is greater than the second thickness; the first color sub-pixels in the first color resist layer 111 where the second thickness portions are located are uniformly distributed; second color resist layer 112 is located in at least a portion of the second color sub-pixels and third color resist layer 113 is located in at least a portion of the third color sub-pixels.

Specifically, a photolithography process is used to form a first color resist layer 111, a second color resist layer 112, and a third color resist layer 113 on the light emitting side of the light emitting layer, and the method includes: a color filter film is formed on the substrate 10, and the first color resist layer 111, the second color resist layer 112, and the third color resist layer 113 are formed by exposing and developing the color filter film using a mask plate.

When the second thickness is 0, the mask plate comprises an exposure area and a shielding area, if the material of the color filter film belongs to positive glue, the exposure area corresponds to the part with the second thickness in the first color resist layer 111, and the shielding area corresponds to the part with the first thickness in the first color resist layer 111; if the material of the color filter film is negative glue, the exposed area corresponds to the portion with the first thickness in the first color resist layer 111, and the shielded area corresponds to the portion with the second thickness in the first color resist layer 111.

When the second thickness is not 0, the mask plate includes a semi-exposure region and a shielding region, and if the material of the color filter film is positive glue, the shielding region corresponds to the first thickness portion of the first color resist layer 111, and the semi-exposure region corresponds to the second thickness portion of the first color resist layer 111.

The embodiments of the present invention provide a method for manufacturing a display panel, which has the same technical effect as the display panel, and will not be described herein again.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A display panel, comprising: the color filter comprises a substrate, a light emitting layer arranged on the substrate, and a first color resistance layer, a second color resistance layer and a third color resistance layer which are arranged on the light emitting side of the light emitting layer; the first color, the second color and the third color are three primary colors;

the light emitting layer includes a plurality of light emitting devices, one light emitting device is disposed in each first color sub-pixel, one light emitting device is disposed in each second color sub-pixel, and one light emitting device is disposed in each third color sub-pixel;

the first color resist layer is positioned in a plurality of first color sub-pixels of the display panel, the thickness of the first color resist layer in some of the plurality of first color sub-pixels is a first thickness, the thickness of the first color resist layer in the rest of the plurality of first color sub-pixels is a second thickness, and the first thickness is larger than the second thickness; the first color sub-pixels in which the second thickness parts are positioned in the first color resistance layer are uniformly distributed;

the second color resistance layer is located in at least part of the second color sub-pixels, and the third color resistance layer is located in at least part of the third color sub-pixels.

2. The display panel of claim 1, wherein the second color resist layer is located in a plurality of second color sub-pixels of the display panel, and wherein the second color resist layer has a third thickness in some of the plurality of second color sub-pixels and a fourth thickness in the remaining of the plurality of second color sub-pixels, and wherein the third thickness is greater than the fourth thickness; and the second color sub-pixels in which the fourth thickness parts of the second color resistance layer are positioned are uniformly distributed.

3. The display panel of claim 2, wherein the third color resist layer is located in a plurality of third color sub-pixels of the display panel, and wherein the third color resist layer has a fifth thickness in some of the plurality of third color sub-pixels and a sixth thickness in the remaining of the plurality of third color sub-pixels, and wherein the fifth thickness is greater than the sixth thickness; and the third color sub-pixels in which the sixth thickness part of the third color resistance layer is positioned are uniformly distributed.

4. The display panel according to claim 1, wherein the second thickness is 0, and the first color sub-pixels in which the second thickness portion of the first color resist layer is located have a ratio of 50% or less in all the first color sub-pixels; alternatively, the first and second electrodes may be,

the second thickness is 20% -80% of the first thickness, and the proportion of the first color sub-pixels in which the second thickness part of the first color resist layer is located in all the first color sub-pixels is less than or equal to 60%.

5. The display panel according to claim 3, wherein the fourth thickness of the second color resist layer is 0, and the second color sub-pixels where the fourth thickness of the second color resist layer is located have a ratio of 50% or less in all the second color sub-pixels; or, the fourth thickness is 20% to 80% of the third thickness, and the ratio of the second color sub-pixels in which the fourth thickness portion of the second color resist layer is located to all the second color sub-pixels is less than or equal to 60%;

and/or the presence of a gas in the gas,

the sixth thickness of the third color resist layer is 0, and the proportion of the third color sub-pixels in which the sixth thickness part of the third color resist layer is positioned in all the third color sub-pixels is less than or equal to 50%; or, the sixth thickness is 20% to 80% of the fifth thickness, and a ratio of the third color sub-pixels in which the sixth thickness portion of the third color resist layer is located in all the third color sub-pixels is less than or equal to 60%.

6. The display panel according to claim 1, further comprising an encapsulating layer for encapsulating the light emitting layer;

the first color resistance layer, the second color resistance layer and the third color resistance layer are all arranged on one side, far away from the light emitting layer, of the packaging layer.

7. The display panel according to claim 1, further comprising a thin film transistor; the light-emitting layer comprises an anode, a light-emitting functional layer and a cathode which are sequentially stacked on the substrate;

and the drain electrode of the thin film transistor is electrically connected with the anode.

8. The display panel of claim 1, wherein the first color sub-pixel is a blue sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a green sub-pixel;

the second color resistance layer is positioned in all the second color sub-pixels, and the thickness of the second color resistance layer is a third thickness; the third color resist layer is located in all the third color sub-pixels, and the thickness of the third color resist layer is a fifth thickness.

9. The preparation method of the display panel is characterized in that the display panel comprises a substrate and a light-emitting layer arranged on the substrate; the light emitting layer includes a plurality of light emitting devices, one light emitting device is disposed in each first color sub-pixel, one light emitting device is disposed in each second color sub-pixel, and one light emitting device is disposed in each third color sub-pixel;

the preparation method comprises the following steps:

forming a first color resistance layer, a second color resistance layer and a third color resistance layer on the light emergent side of the light emitting layer by adopting a photoetching process; the first color, the second color and the third color are three primary colors;

the first color resist layer is positioned in a plurality of first color sub-pixels of the display panel, the thickness of the first color resist layer in some of the plurality of first color sub-pixels is a first thickness, the thickness of the first color resist layer in the rest of the plurality of first color sub-pixels is a second thickness, and the first thickness is larger than the second thickness; the first color sub-pixels in which the second thickness parts are positioned in the first color resistance layer are uniformly distributed; the second color resistance layer is located in at least part of the second color sub-pixels, and the third color resistance layer is located in at least part of the third color sub-pixels.

10. The method of claim 9, wherein the second color resist layer is located in a plurality of second color sub-pixels of the display panel, and the second color resist layer has a third thickness in some of the second color sub-pixels and a fourth thickness in the rest of the second color sub-pixels, and the third thickness is greater than the fourth thickness; the second color sub-pixels in which the fourth thickness parts of the second color resistance layer are positioned are uniformly distributed;

and/or the presence of a gas in the gas,

the third color resist layer is located in a plurality of third color sub-pixels of the display panel, the third color resist layer has a fifth thickness in some of the third color sub-pixels, and has a sixth thickness in the rest of the third color sub-pixels, and the fifth thickness is greater than the sixth thickness; and the third color sub-pixels in which the sixth thickness part of the third color resistance layer is positioned are uniformly distributed.