CN117673058A

CN117673058A - Display panel and manufacturing method thereof

Info

Publication number: CN117673058A
Application number: CN202211004707.0A
Authority: CN
Inventors: 姚志博; 王岩; 张东豪
Original assignee: Chengdu Vistar Optoelectronics Co Ltd
Current assignee: Chengdu Vistar Optoelectronics Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2024-03-08

Abstract

The embodiment provides a display panel and a manufacturing method of the display panel, and relates to the technical field of display. The brightness adjusting layer is arranged on the light emitting side of the target display with larger difference between the average brightness values of the light emitted by the non-target display devices, so that the brightness value of the light emitted by the target display device after passing through the brightness adjusting layer is close to the average brightness value of the light emitted by the non-target display device, and the luminous performance difference of each display device on the display panel is improved. Meanwhile, the scheme for improving the luminous performance difference of each display device can not influence the adjustable gray scale value range of each display device, the color depth of each display device in the display panel can ensure the display uniformity of the display panel under the condition of not being influenced, and the market competitiveness of the display panel is improved.

Description

Display panel and manufacturing method thereof

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display panel and a method for manufacturing the display panel.

Background

Display devices (such as Micro-LEDs) are limited by factors such as growth equipment structure, manufacturing process parameters, wafer warpage and the like, so that the display devices manufactured in different areas of a wafer have luminous performance differences, after the display devices are transferred to a driving backboard to manufacture a display panel, the display uniformity of the display panel is affected, and the market competitiveness of the display panel is reduced due to the phenomenon that brightness values and chromaticity are uneven among pixels on the display panel.

Disclosure of Invention

In order to overcome the technical problems mentioned in the background, embodiments of the present application provide a display panel and a method for manufacturing the display panel.

In a first aspect of the present application, a display panel is provided, including a driving back plate, a display device, and a brightness adjusting layer;

the display device is arranged on the driving backboard;

the display device comprises a target display device and a non-target display device, wherein under the same electric signal driving effect, the difference between the brightness value of light emitted by each target display device and the average brightness value of light emitted by the non-target display device is larger than a preset first brightness difference value;

the brightness adjusting layer is arranged on the light emitting side of the target display device, the orthographic projection of the brightness adjusting layer on the driving backboard covers the orthographic projection of the target display device on the driving backboard, under the same electric signal driving effect, the difference between the brightness value of the light emitted by each target display device after passing through the brightness adjusting layer and the average brightness value of the light emitted by the non-target display device is smaller than a preset second brightness difference value, and the second brightness difference value is smaller than the first brightness difference value.

In one possible embodiment of the present application, the brightness adjusting layer includes a brightness attenuation layer;

the target display device comprises a first target display device, wherein the brightness value of light emitted by the first target display device is larger than the average brightness value of light emitted by the non-target display device under the same electric signal driving effect;

the brightness attenuation layer is disposed on the light-emitting side of the first target display device.

In one possible embodiment of the present application, the brightness adjusting layer comprises a brightness enhancing layer;

the target display device comprises a second target display device, wherein the brightness value of the light emitted by the second target display device is smaller than the average brightness value of the light emitted by the non-target display device under the same electric signal driving effect;

the brightness anti-reflection layer is arranged on the light emitting side of the second target display device.

In one possible embodiment of the present application, the light absorbing particles are included in the brightness-attenuating layer, and the thickness of the brightness-attenuating layer is 0.1um to 10um, where the thickness of the brightness-attenuating layer is positively correlated with the brightness value of the light emitted by the first target display device.

In one possible embodiment of the present application, the brightness and anti-reflection layer is a transparent spherical lens structure, and the thickness of the brightness and anti-reflection layer is 1 um-50 um, where the thickness of the brightness and anti-reflection layer is inversely related to the brightness value of the light emitted by the second target display device.

In a second aspect of the present application, a method for manufacturing a display panel is provided, the method including:

transferring the display device to a driving backboard and electrically connecting the display device with the driving backboard;

the display devices are lightened, target display devices and non-target display devices are screened out from the display devices, wherein under the same electric signal driving effect, the difference between the brightness value of light emitted by each target display device and the average brightness value of light emitted by the non-target display device is larger than a preset first brightness difference value;

measuring a brightness offset value of the target display device and a target position coordinate of the target display device on the driving backboard;

and manufacturing a brightness adjusting layer on the light emitting side of the target display device based on the brightness offset value and the target position coordinate, and enabling the orthographic projection of the brightness adjusting layer on the driving backboard to cover the orthographic projection of the target display device on the driving backboard, wherein under the same electric signal driving effect, the difference between the brightness value of the light emitted by each target display device and the brightness value of the light emitted by the non-target display device after passing through the brightness adjusting layer is smaller than a preset second brightness difference value, and the second brightness difference value is smaller than the first brightness difference value.

In one possible embodiment of the present application, the brightness adjustment layer includes a brightness attenuation layer, and the target display device includes a first target display device, where, under the same electric signal driving effect, a brightness value of light emitted by the first target display device is greater than an average brightness value of light emitted by the non-target display device; the step of fabricating a brightness adjustment layer on the light emitting side of the target display device based on the brightness offset value and the target position coordinate includes:

manufacturing the brightness attenuation layer on the light emergent side of the first target display device based on the brightness offset value and the target position coordinate;

the brightness adjusting layer comprises a brightness reflection-preventing layer, the target display device comprises a second target display device, and the brightness value of light emitted by the second target display device is smaller than the average brightness value of light emitted by the non-target display device under the same electric signal driving effect; the step of fabricating a brightness adjustment layer on the light emitting side of the target display device based on the brightness offset value and the target position coordinate includes:

and manufacturing the brightness anti-reflection layer on the light emergent side of the second target display device based on the brightness offset value and the target position coordinate.

In one possible embodiment of the present application, the step of fabricating a brightness adjustment layer on the light emitting side of the target display device based on the brightness offset value and the target position coordinate further includes:

obtaining a target thickness of the brightness adjusting layer to be manufactured based on the brightness offset value and the corresponding relation between the pre-stored brightness offset value and the thickness of the brightness adjusting layer;

controlling a nozzle of the inkjet printing device to move above the target display device according to the target position coordinates, and controlling the inkjet printing device to spray-print a brightness adjusting layer with the target thickness on the target display device;

preferably, the step of controlling the inkjet printing apparatus to spray-print the brightness adjusting layer of the target thickness on the target display device includes:

and controlling the ink-jet printing equipment to perform spray printing layer by layer on the target display device for a plurality of times to obtain the brightness adjusting layer with the target thickness.

In one possible embodiment of the present application, before the step of fabricating a brightness adjustment layer on the light emitting side of the target display device based on the brightness offset value and the target position coordinate, the method includes:

dividing brightness value offset grades corresponding to different brightness offset values;

and preparing brightness adjusting layer arrays corresponding to different brightness value deviation grades on the transfer plate coated with the photosensitive adhesive layer, wherein the brightness adjusting layer arrays corresponding to the same brightness value deviation grade are manufactured on the same transfer plate.

selecting a brightness adjustment layer array corresponding to the brightness value offset level based on the brightness value offset level corresponding to the brightness value offset value;

and aligning the transfer plate where the selected brightness adjusting layer array is positioned with a driving backboard, and transferring the brightness adjusting layer at the corresponding position on the transfer plate to the light emitting side of the target display device according to the target position coordinate.

According to the display panel and the manufacturing method of the display panel, the brightness adjusting layer is arranged on the light emitting side of the target display with larger difference between the average brightness values of the light emitted by the non-target display devices, so that the brightness value of the light emitted by the target display device after passing through the brightness adjusting layer is close to the average brightness value of the light emitted by the non-target display device, and the luminous performance difference of each display device on the display panel is improved. Meanwhile, the scheme for improving the luminous performance difference of each display device can not influence the adjustable gray scale value range of each display device, the color depth of each display device in the display panel can ensure the display uniformity of the display panel under the condition of not being influenced, and the market competitiveness of the display panel is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 illustrates a schematic diagram of gray scale values of display devices in a display panel when the electric signal compensation causes the light emission luminance of the display devices to be the same;

fig. 2 illustrates a schematic diagram of a possible structure of the display panel provided in the present embodiment;

fig. 3 illustrates another possible structural schematic diagram of the display panel provided in the present embodiment;

fig. 4 illustrates still another structural schematic diagram of the display panel provided in the present embodiment;

fig. 5 illustrates still another structural schematic diagram of the display panel provided in the present embodiment;

fig. 6 illustrates a flowchart of a method for manufacturing a display panel according to the present embodiment;

fig. 7 illustrates a process diagram corresponding to the manufacturing method of the display panel according to the embodiment.

Icon: 10-a display panel; 110-a drive back plate; 120-display device; 1201-target display device, 12011-first target display device, 12012-second target display device; 1202-non-target display devices; 130-a brightness adjusting layer; 1301-a brightness attenuation layer; 1302-a brightness antireflection layer; 140-black matrix layer; 150-an encapsulation layer; 160-a touch control functional layer; 170-an adhesive layer; 180-cover plate.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put when the product of the application is used, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

It should be noted that, in the case of no conflict, different features in the embodiments of the present application may be combined with each other.

In order to solve the technical problem in the background art, a possible solution is to perform electric signal compensation for a display device with obvious difference in display brightness value by the De-Mura technology, however, the solution is effective for the case that the difference in brightness value of the display device in the display panel is not too large, and when the difference in brightness value of the display device in the display panel is too large, it is difficult to improve the display uniformity of the display panel by means of electric signal compensation. In addition, the De-Mura technology may further cause the color depth of the corresponding display device to be limited, for example, as shown in fig. 1, when the same brightness value is displayed, the display gray scale values of the display devices in two dotted line areas in the figure are respectively 230 and 240, and the display gray scale values of the other display devices are 255, and when the gray scale values of the display devices in the display panel in the figure are adjusted, the adjustable gray scale value range of the display devices in the two dotted line areas is lower than that of the display devices in other positions, that is, the color depth of the display devices in the two dotted line areas is limited.

In order to solve the above technical problems. The inventor innovatively designs the following technical schemes, and detailed description will be given below of specific implementation schemes of the present application with reference to the accompanying drawings. It should be noted that the above solutions in the prior art all have drawbacks that the inventors have obtained after they have practiced and studied carefully, and thus the discovery process of the above technical problem and the solutions presented in the following embodiments for the above problem should be all contributions of the inventors to the present application during the inventive process, and should not be construed as what is known to those skilled in the art.

Referring to fig. 2, fig. 2 illustrates a schematic diagram of a possible structure of a display panel according to the present embodiment, and the display panel 10 may include a driving back plate 110, a display device 120, and a brightness adjusting layer 130. The display devices 120 are disposed on the driving back plate 110 and electrically connected with driving circuits in the driving back plate 110, the display devices 120 may be distributed on the driving back plate 110 in an array, and a black matrix layer 140 may be filled between adjacent display devices 120 to prevent crosstalk between the display devices 120.

The display devices 120 may be classified into target display devices 1201 and non-target display devices 1202 according to the difference in luminance values emitted by the same driving electric signal, wherein the non-target display devices 1202 are display devices 120 having substantially the same luminance value emitted, and generally, the number of non-target display devices 1202 is the majority in the display panel 10; each of the target display devices 1201 is such that the difference between the luminance value of the emitted light and the average luminance value of the light emitted from the non-target display devices 1202 is greater than a preset first luminance difference value (e.g., 10% of the average luminance value), and the average luminance value of the light emitted from the non-target display devices 1202 refers to the ratio between the sum of the luminance values of all the non-target display devices 1202 in the display panel 10 and the number of non-target display devices 1202, and typically the number of target display devices 1201 is small in the display panel 10.

In this embodiment, the brightness adjustment layer 130 may be disposed on the light emitting side of the target display device 1201, where the front projection of the brightness adjustment layer 130 on the driving back plate 110 covers the front projection of the target display device 1201 on the driving back plate 110, and under the same driving action of the electric signal, the difference between the brightness value of the light emitted by each target display device 1201 after passing through the brightness adjustment layer 130 and the average brightness value of the light emitted by the non-target display device 1202 is smaller than the preset second brightness difference value (for example, 0.5% of the average brightness value), and the second brightness difference value is smaller than the first brightness difference value.

In the above-described structure, the luminance adjustment layer 130 is provided on the light-emitting side of the target display device 1201 where the average luminance value of the light emitted from the non-target display device 1202 is greatly different, so that the luminance value of the light emitted from the target display device 1201 after passing through the luminance adjustment layer 130 can be made close to the average luminance value of the light emitted from the non-target display device 1202, thereby improving the difference in light emission performance of the respective display devices 120 on the display panel 10. Meanwhile, the above scheme for improving the difference of the light emitting performance of each display device 120 does not affect the adjustable gray scale value range of each display device 120, and the color depth of each display device 120 in the display panel 10 can ensure the display uniformity of the display panel 10 without being affected, so as to improve the market competitiveness of the display panel 10.

In this embodiment, the luminance adjusting layer 130 may be directly disposed on the target display device 1201, or may be disposed on another film layer on the light emitting side of the target display device 1201. Referring to fig. 3, fig. 3 illustrates another possible structural schematic diagram of the display panel provided by the present embodiment, the display panel 10 may further include an encapsulation layer 150, a touch functional layer 160, an adhesive layer 170, and a cover plate 180, wherein the encapsulation layer 150, the touch functional layer 160, the adhesive layer 170, and the cover plate 180 are sequentially stacked on a side of the display device 120 and the black matrix layer 140 away from the driving back plate 110, and as shown in the drawing, the brightness adjusting layer 130 may be disposed on a side of the touch functional layer 160 facing the driving back plate 110. The foregoing merely shows one possible arrangement position of the brightness adjusting layer 130, and the brightness adjusting layer 130 may also be disposed on a side of the touch functional layer 160 away from the driving back plate 110, or on a side of the cover plate 180 facing the driving back plate 110. It will be appreciated that, in other implementations of the present embodiment, the display panel 10 may also have no touch function layer 160, and in this implementation, the brightness adjustment layer 130 may be disposed on a side of the cover plate 180 facing the driving back plate 110. In addition, in addition to the film layers shown in fig. 3, an optical film layer such as an antireflection film and an antiglare film may be provided on the side of the encapsulation layer 150 remote from the driving back plate 110.

Further, in this embodiment, referring to fig. 4, fig. 4 illustrates still another schematic structure of the display panel provided in this embodiment, the brightness adjustment layer 130 may include a brightness attenuation layer 1301, and the target display device 1201 may include a first target display device 12011, where under the same electric signal driving effect, the brightness value of the light emitted by the first target display device 12011 is greater than the average brightness value of the light emitted by the non-target display device 1202. The luminance reducing layer 1301 is disposed on the light emitting side of the first target display device 12011. The setting of the luminance-reducing layer 1301 may reduce the luminance value of the light emitted by the first target display device 12011 after passing through the luminance-reducing layer 1301, so that the luminance value of the light emitted by the first target display device 12011 after passing through the luminance-reducing layer 1301 is close to the average luminance value of the light emitted by the non-target display device 1202.

Light absorbing particles may be included in the luminance reducing layer 1301. Illustratively, the brightness-attenuating layer 1301 may be made of a resin material mixed with light-absorbing particles, wherein the light-absorbing particles may be black particles such as ink particles, and the resin may be polyacrylate, polyepoxide, or the like. The thickness d1 of the luminance-attenuating layer 1301 may be, but is not limited to, 0.1um, 0.8um, 1.2um, 2.1um, 3.2um, 4.2um, 5.5um, 6.2um, 7.6um, 8.3um, 9.1um, 9.4um, 9.7um, 10um, etc., wherein the larger the thickness of the luminance-attenuating layer 1301 is, the stronger the attenuation ability to luminance values. The larger the luminance value of the light emitted from the first target display device 12011, the more luminance values that need to be attenuated, and accordingly the larger the thickness of the luminance attenuation layer 1301 provided on the light emitting side of the first target display device 12011. In this embodiment, the thickness of the luminance-reducing layer 1301 is positively correlated with the luminance value of the light emitted from the first target display device 12011.

Further, in this embodiment, referring to fig. 5, fig. 5 illustrates still another schematic structure provided in this embodiment, the brightness adjustment layer 130 may further include a brightness enhancing layer 1302, and the target display device 1201 may further include a second target display device 12012, where under the same driving action of an electric signal, the brightness value of the light emitted by the second target display device 12012 is smaller than the average brightness value of the light emitted by the non-target display device 1202. The brightness enhancing layer 1302 is disposed on the light-emitting side of the second target display device 12012. The brightness enhancing layer 1302 is configured to enhance the brightness value of the light emitted by the second target display device 12012 after passing through the brightness enhancing layer 1302, such that the brightness value of the light emitted by the second target display device 12012 after passing through the brightness enhancing layer 1302 is close to the average brightness value of the light emitted by the non-target display device 1202.

The brightness enhancing layer 1302 may have a transparent spherical lens structure. Illustratively, the brightness enhancing layer 1302 may be made of a resin material with a surface modifier added thereto for adjusting the tension of the surface of the resin, such that a transparent spherical lens structure is formed when the brightness enhancing layer 1302 is made of the resin material, and the resin may be polyacrylate, polyepoxide, or the like. The thickness d2 of the brightness enhancing layer 1302 may be, but is not limited to, 1um, 5um, 11um, 16um, 19um, 23um, 26um, 32um, 38um, 43um, 45um, 47um, 49um, 50um, etc., wherein the larger the thickness of the brightness enhancing layer 1302 is, the stronger the enhancement capability of the brightness value. The smaller the luminance value of the light emitted by the second target display device 12012, the more luminance values that need to be enhanced, and correspondingly the greater the thickness of the luminance anti-reflection layer 1302 disposed on the light-emitting side of the second target display device 12012. In this embodiment, the thickness of the brightness enhancement layer 1302 is inversely related to the brightness value of the light emitted by the second target display device 12012.

The present embodiment also provides a method for manufacturing a display panel, please refer to fig. 6 and 7, fig. 6 illustrates a flow chart of the method for manufacturing the display panel, and fig. 7 illustrates a process diagram corresponding to fig. 6. The following describes the method for manufacturing the display panel according to the present embodiment in detail with reference to fig. 6 and 7.

In step S11, the display device 120 is transferred onto the driving back plate 110 and electrically connected to the driving back plate 110.

In this step, the display device 120 may be transferred from the wafer to the driving backplate 110 by a bulk transfer technique (e.g., a laser transfer technique) and electrically connected to the driving backplate 110.

After the transfer is completed, the black matrix layer 140 filled between the adjacent display devices 120 may be fabricated by photolithography or inkjet printing.

In step S12, the display device 120 is turned on, and the target display device 1201 and the non-target display device 1202 are selected from the display devices 120.

In this step, the target display device 1201 and the non-target display device 1202 of different colors are correspondingly screened out by lighting the display devices 120 of different colors. The non-target display device 1202 is the display device 120 having substantially the same luminance value of the emitted light, and in general, the number of non-target display devices 1202 in the display panel 10 is dominant; under the same electric signal driving, each of the target display devices 1201 is such that the difference between the luminance value of the emitted light and the average luminance value of the light emitted from the non-target display device 1202 is greater than a preset first luminance difference value (e.g., 10% of the average luminance value), and typically, the number of target display devices 1201 in the display panel 10 is small.

In step S13, the luminance shift value of the target display device 1201 and the target position coordinates of the target display device 1201 on the driving back plate are measured.

The luminance shift value refers to a luminance difference value between the luminance value of the light emitted from the target display device 1201 and the average luminance value of the light emitted from the non-target display device 1202 under the same electric signal driving. The luminance shift value and the target position coordinates can be obtained by first acquiring a measurement image including each display device 120 at the time of measurement; then, the target display device 1201 whose luminance value is abnormal is determined in the measurement image by performing image processing on the measurement image and the corresponding target position coordinates thereof are obtained, and the luminance offset value of the target display device 1201 is calculated.

In step S14, the luminance adjustment layer 130 is fabricated on the light-emitting side of the target display device 1201 based on the luminance offset value and the target position coordinates.

In the step S14, the front projection of the fabricated brightness adjustment layer 130 on the driving back plate 110 covers the front projection of the target display device 1201 on the driving back plate 110, so that under the same driving action of the electric signal, the difference between the brightness value of the light emitted by each target display device 1201 and the brightness value of the light emitted by the non-target display device 1202 after passing through the brightness adjustment layer 130 is smaller than the preset second brightness difference value, and the second brightness difference value is smaller than the first brightness difference value.

In this embodiment, the luminance adjustment layer 130 may include a luminance attenuation layer 1301, the target display device 1201 may include a first target display device 12011, and under the same electric signal driving effect, the luminance value of the light emitted by the first target display device 12011 is greater than the average luminance value of the light emitted by the non-target display device 12012, and in step S14, the luminance attenuation layer 1301 may be fabricated on the light emitting side of the first target display device 12011 based on the luminance offset value and the target position coordinates.

In this embodiment, the brightness adjustment layer 130 may further include a brightness reflection-enhancing layer 1302, the target display device 1201 may include a second target display device 12012, the brightness value of the light emitted by the second target display device 12012 is smaller than the average brightness value of the light emitted by the non-target display device 12012 under the same driving action of the electric signal, and in step S14, the brightness reflection-enhancing layer 1302 may be fabricated on the light emitting side of the second target display device 12012 based on the brightness offset value and the target position coordinates.

Further, in one implementation of the present embodiment, step S14 may be implemented in the following manner.

First, a target thickness of a brightness adjustment layer to be manufactured is obtained based on a brightness offset value and a pre-stored correspondence between the brightness offset value and the thickness of the brightness adjustment layer.

Then, the nozzle of the inkjet printing apparatus is controlled to move over the target display device 1201 according to the target position coordinates, and the inkjet printing apparatus is controlled to spray the brightness adjustment layer 130 of the printing target thickness on the target display device 1201.

In this embodiment, the viscosity of the ink for inkjet printing is relatively low (e.g., 10 cps), and in order to ensure that the thickness of the brightness adjustment layer 130 can reach the target thickness, the brightness adjustment layer 130 of the target thickness can be obtained by controlling the inkjet printing apparatus to perform the layer-by-layer spray printing on the target display device 1201 a plurality of times.

Further, in another implementation manner of the present embodiment, before step S14, the manufacturing method provided in the present embodiment may further include the following steps.

First, the luminance value offset levels corresponding to the different luminance offset values are divided.

And then, preparing brightness adjusting layer arrays corresponding to different brightness value deviation grades on the transfer plate coated with the photosensitive adhesive layer, wherein the brightness adjusting layer arrays corresponding to the same brightness value deviation grade are manufactured on the same transfer plate.

In the present embodiment, step S14 may be implemented in the following manner.

First, a brightness adjustment layer array corresponding to a brightness value shift level is selected based on the brightness value shift level corresponding to the brightness value shift value.

Then, the transfer plate where the selected brightness adjustment layer array is located is aligned with the driving back plate, and the brightness adjustment layer at the corresponding position on the transfer plate is transferred to the light emitting side of the target display device 1201 according to the target position coordinates.

In this embodiment, after the brightness adjusting layer 130 is fabricated, the encapsulation layer 150, the touch functional layer 160, the adhesive layer 170 and the cover plate 180 may be sequentially fabricated on the side of the display device 120 and the black matrix layer 140 away from the driving back plate 110, wherein the encapsulation layer 150 may be an organic film layer formed of an epoxy material, for example, or an inorganic film layer composed of SiOx or SiNx.

In this embodiment, the display panel 10 may also be subjected to electric signal compensation to further optimize the uniform display effect of the display panel 10.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The display panel is characterized by comprising a driving backboard, a display device and a brightness adjusting layer;

the display device is arranged on the driving backboard;

2. The display panel of claim 1, wherein the brightness adjustment layer comprises a brightness attenuation layer;

3. The display panel of claim 1 or 2, wherein the brightness adjusting layer comprises a brightness anti-reflection layer;

4. The display panel of claim 2, wherein the luminance-reducing layer includes light-absorbing particles therein, and has a thickness of 0.1um to 10um, wherein the thickness of the luminance-reducing layer is positively correlated with a luminance value of light emitted from the first target display device.

5. The display panel of claim 3, wherein the brightness enhancement layer is a transparent spherical lens structure, and the thickness of the brightness enhancement layer is 1um to 50um, wherein the thickness of the brightness enhancement layer is inversely related to the brightness value of the light emitted from the second target display device.

6. A method for manufacturing a display panel, the method comprising:

7. The method of manufacturing a display panel according to claim 6, wherein the brightness adjustment layer includes a brightness attenuation layer, and the target display device includes a first target display device, wherein a brightness value of light emitted from the first target display device is greater than an average brightness value of light emitted from the non-target display device under the same electric signal driving effect; the step of fabricating a brightness adjustment layer on the light emitting side of the target display device based on the brightness offset value and the target position coordinate includes:

8. The method of manufacturing a display panel according to claim 6 or 7, wherein the step of manufacturing a luminance adjustment layer on the light-emitting side of the target display device based on the luminance offset value and the target position coordinates further comprises:

9. The method of manufacturing a display panel according to claim 6 or 7, wherein before the step of manufacturing a luminance adjustment layer on the light-emitting side of the target display device based on the luminance offset value and the target position coordinates, the method includes:

10. The method of manufacturing a display panel according to claim 9, wherein the step of manufacturing a luminance adjustment layer on the light-emitting side of the target display device based on the luminance offset value and the target position coordinates further comprises: