CN114759076A - Display module and preparation method thereof - Google Patents
Display module and preparation method thereof Download PDFInfo
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- CN114759076A CN114759076A CN202210455952.7A CN202210455952A CN114759076A CN 114759076 A CN114759076 A CN 114759076A CN 202210455952 A CN202210455952 A CN 202210455952A CN 114759076 A CN114759076 A CN 114759076A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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Abstract
The embodiment of the application discloses a display module and a preparation method of the display module, wherein the display module comprises a display panel and a color filter layer positioned on the light emergent side of the display panel, the color filter layer comprises a first color filter positioned in a central area and a second color filter positioned in an edge area, and the wavelength corresponding to the transmission spectrum peak value of the second color filter is smaller than the wavelength corresponding to the transmission spectrum peak value of the first color filter; the transmission spectrum of the second color filter is more matched with the peak value of the luminous spectrum of the large-angle light, so that more large-angle light can transmit through the second color filter, the brightness of an edge area is improved, and dark bands at the edge position of a display area are reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to a display module and a preparation method of the display module.
Background
The use of color filters instead of polarizers can significantly reduce the thickness of the display and significantly increase brightness and reduce power consumption, a technique commonly referred to as COE. However, due to the existence of the black matrix, the brightness of the display panel is obviously reduced when the display panel is observed at a large angle, the brightness attenuation is serious, the visual experience is influenced, the brightness of an edge area is rapidly reduced along with the increase of the angle, and a dark band with lower brightness appears at the edge of a screen in vision, so that the visual effect is influenced; the introduction of the COE technology can further increase the brightness attenuation, further increase the width of a dark band, and seriously affect the display effect.
Therefore, the existing display module has the technical problem that dark bands exist at the edge of the display.
Disclosure of Invention
The embodiment of the application provides a display module and a display module preparation method, and can relieve the technical problem that a dark band exists at the edge of a display in the existing display module.
The embodiment of the application provides a display module assembly, display module assembly's display area includes central zone, is located the marginal area in the central zone outside, display module assembly includes:
a display panel;
the color filter layer is arranged in the light emergent direction of the display panel and comprises a first color filter positioned in a central area and a second color filter positioned in an edge area;
the wavelength corresponding to the transmission spectrum peak value of the second color filter is smaller than the wavelength corresponding to the transmission spectrum peak value of the first color filter.
Optionally, in some embodiments of the present application, a wavelength corresponding to a transmission spectrum peak of the second color filter is lower than a wavelength corresponding to a transmission spectrum peak of the first color filter by a first preset value, where the first preset value is greater than or equal to 5 nanometers.
Optionally, in some embodiments of the present application, the first color filter includes a first red color resistor, a first blue color resistor, a first green color resistor, and a first black matrix, the second color filter includes a second red color resistor, a second blue color resistor, a second green color resistor, and a second black matrix, and the second color filter further includes a brightness enhancement portion, where the brightness enhancement portion is configured to enhance a light transmittance of the second color filter.
Optionally, in some embodiments of the present application, a wavelength range corresponding to a peak of a transmittance spectrum of the first red color resistance is 605 ± 5 nm; the wavelength range corresponding to the transmission spectrum peak value of the second red color resistance is less than or equal to 600 +/-5 nanometers.
Optionally, in some embodiments of the present application, a wavelength range corresponding to a peak of a transmittance spectrum of the first green color resistance is 530 ± 5 nanometers; the wavelength range corresponding to the transmission spectrum peak value of the second green color resistance is less than or equal to 525 +/-5 nanometers.
Optionally, in some embodiments of the present application, a wavelength range corresponding to a peak of a transmittance spectrum of the first blue color resistance is 460 ± 5 nanometers; the wavelength range corresponding to the transmission spectrum peak value of the second blue color resistance is less than or equal to 455 +/-5 nanometers.
Optionally, in some embodiments of the present application, an orthographic projection area of the second red color resistor on the cover plate is larger than an orthographic projection area of the first red color resistor on the cover plate.
Optionally, in some embodiments of the present application, an orthographic area of the second black matrix on the cover plate is smaller than an orthographic area of the first black matrix on the cover plate.
Optionally, in some embodiments of the present application, a setting density of the second black matrix in the edge region is smaller than a setting density of the first black matrix in the central region.
The embodiment of the application provides a display module preparation method, which comprises the following steps:
providing a display panel, wherein a display area of the display panel comprises a central area and an edge area positioned outside the central area;
preparing a first color filter in the central area of one side of the display panel through a first photomask;
preparing a second color filter in the edge area of the same side of the display panel through a second photomask;
and attaching a cover plate to one side of the first color filter and one side of the second color filter, which are far away from the display panel.
Has the beneficial effects that: the display area of the display module comprises a central area and an edge area, wherein the central area is provided with a first color filter, the edge area is provided with a second color filter, and the wavelength corresponding to the transmission spectrum peak value of the second color filter is smaller than the wavelength corresponding to the transmission spectrum peak value of the first color filter; the transmission spectrum of the second color filter is more matched with the peak value of the luminous spectrum of the large-angle light, and the large-angle light passing through the second color filter is more, so that the brightness of the edge area is improved, and the dark band at the edge position of the display area is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic top view of a display module provided in the present application;
FIG. 2 is a first cross-sectional view of a central region of a display module according to the present disclosure;
FIG. 3 is a second cross-sectional view of an edge region of a display module according to the present disclosure;
Fig. 4 is a transmission spectrum of a color filter layer of a display module provided in the present application under different viewing angles;
fig. 5 is a transmission spectrum of a first red color resistance and a second red color resistance in a color filter layer of a display module according to the present application;
FIG. 6 is a transmission spectrum of a first green color resistance and a second green color resistance in a color filter layer of a display module according to the present disclosure;
FIG. 7 is a transmission spectrum of a first blue color resistance and a second blue color resistance in a color filter layer of a display module according to the present disclosure;
FIG. 8 is a transmission spectrum of a color filter layer of a display module according to the present disclosure for white light;
fig. 9 is a schematic flow chart of a manufacturing method of a display module provided in the present application.
Description of reference numerals:
Detailed Description
The technical solutions in 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 obvious that the described embodiments are only a part of the embodiments of the present application, 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 application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
In the conventional display module, because the brightness of the light with a large viewing angle is low, for the display area, the brightness of the edge area is lower than that of the central area, so that a dark zone with low brightness appears in the edge area in vision, and the visual effect is influenced.
Therefore, it is desirable to provide a display module, which can alleviate the technical problem of dark bands at the display edge of the existing display module.
Referring to fig. 1, fig. 2, and fig. 3, a display module 1 provided in the present application includes a display panel, a color filter layer, and a cover plate 60, where the color filter layer is disposed in a light emitting direction of the display panel, the color filter layer includes a first color filter 40 located in a central region H1 and a second color filter 70 located in an edge region H2, and the cover plate 60 is disposed on a side of the color filter layer away from the display panel, where a wavelength corresponding to a transmission spectrum peak of the second color filter 70 is smaller than a wavelength corresponding to a transmission spectrum peak of the first color filter 40.
The display area of the display module 1 includes a central area H1, and an edge area H2 located outside the central area H1.
The display panel comprises an array substrate 10, a light emitting layer 20 arranged on the array substrate 10 and facing the color filter layer, and an encapsulation layer 30 arranged on the light emitting layer 20 and facing the color filter layer.
Wherein, the colour filter layer orientation one side surface of apron 60 is provided with optical cement 50, optical cement 50 is used for increasing the colour filter layer with cohesion between the apron 60 makes the colour filter layer with the apron 60 laminating sets up.
In the embodiment, by matching the transmission spectrum of the second color filter 70 with the peak value of the light emission spectrum of the large-angle light, more large-angle light can transmit through the second color filter 70, thereby improving the brightness of the edge region H2, improving the uniformity of the brightness of the display region, and reducing the dark band at the edge position of the display region.
The technical solution of the present application will now be described with reference to specific embodiments.
In an embodiment, the display module 1 or the display screen may be a waterfall screen, a large-curvature bent product, or a multi-curved product.
The multi-curved-surface product is a display module 1 or a display screen with at least two edge areas H2 as curved surfaces.
It can be understood that, since the edge region H2 is bent or curved, the difference between the brightness at the edge region H2 and the brightness at the central region H1 is increased, resulting in a dark band with a larger width in the edge region H2 relative to the central region H1.
In one embodiment, the central region H1 of the display area is a non-bending region, and the edge region H2 of the display area is a bending region.
In the bending area, the bending angle range of the display module 1 is less than or equal to 40 degrees.
In an embodiment, the wavelength corresponding to the transmission spectrum peak of the second color filter 70 is lower than the wavelength corresponding to the transmission spectrum peak of the first color filter 40 by a first preset value, and the first preset value is greater than or equal to 5 nanometers.
It can be understood that the wavelength corresponding to the light transmittance peak value at the large viewing angle is small, and the wavelength corresponding to the light transmittance peak value at the smaller viewing angle is small; for example: the wavelength corresponding to the peak of the transmittance of the light with large viewing angle is blue-shifted with respect to the wavelength corresponding to the peak of the transmittance of the light with small viewing angle, so that the transmittance of the light with large viewing angle in the edge region H2 is lower if the first color filter 40 is also used; that is, for a specific wavelength of light, when the transmittance peak is reached at the central region H1, the transmittance peak is not reached at the edge region H2, and the transmittance peak of the edge region H2 is within a range of at least 5 nm less than the specific wavelength.
The light rays with large viewing angle enter the second color filter 70 in the edge region H2, and the light rays with small viewing angle enter the first color filter 40 in the central region H1.
Wherein, the blue shift can be understood as: the wavelength corresponding to the transmittance peak of the second color filter 70 is smaller than the wavelength corresponding to the transmittance peak of the first color filter 40; further, the absolute value of the difference between the two is greater than or equal to 5 nm.
In the present embodiment, the wavelength corresponding to the transmission spectrum peak of the second color filter 70 is made smaller than the wavelength corresponding to the transmission spectrum peak of the first color filter 40; the second color filter 70 can be better matched with the peak value of the emission spectrum of the light with large viewing angle, and the transmittance of the light with large viewing angle in the edge region H2 is further improved by using the second color filter 70.
Referring to fig. 4, it can be intuitively understood that the peak transmittance is different for the light rays with different viewing angles, and the wavelength corresponding to the peak transmittance is reduced as the viewing angle increases.
Wherein, 0deg is the viewing angle of 0 degree.
Wherein, the wavelength corresponding to the peak transmittance is less than or equal to the wavelength corresponding to the peak transmittance when the viewing angle is 0 degree for the viewing angles of 30 degrees, 45 degrees and 60 degrees.
In an embodiment, referring to fig. 2 and fig. 3, the first color filter 40 includes a first red color resistor 401, a first blue color resistor 403, a first green color resistor 402, and a first black matrix 404, the second color filter 70 includes a second red color resistor 701, a second blue color resistor 703, a second green color resistor 702, and a second black matrix 704, and the second color filter 70 further includes a brightness enhancement portion for enhancing the light transmittance of the second color filter 70.
Here, by providing the edge region H2 with a brightening portion, the brightening portion may be any one of a condenser lens and a collimator grating.
The brightening portion may be disposed on a side surface of the second red color resistor 701, the second blue color resistor 703, and the second green color resistor 702 away from the display panel.
The brightening portion may be disposed in the color filter, and specifically, may be disposed in the color resistor.
In the present embodiment, by providing the highlight portion in the edge region H2, the luminance of the edge region H2 is further increased, and the dark band of the edge region H2 is reduced.
In one embodiment, referring to fig. 5, the wavelength range corresponding to the peak of the transmittance spectrum of the first red color filter 401 is 605 ± 5 nm; the wavelength range corresponding to the transmission spectrum peak of the second red color resistance 701 is less than or equal to 600 +/-5 nanometers.
Where 5 refers to a precision error of 5 nm, for example, 600 nm is 600 nm wavelength, and the precision error range is 600 nm plus or minus 5 nm.
The middle of R _ AA is the first red color resistor 401 located in the central region H1, and R _ Curve is the second red color resistor 701 located in the edge region H2.
In one embodiment, referring to fig. 6, the wavelength range corresponding to the peak of the transmission spectrum of the first green color resistance 402 is 530 ± 5 nm; the wavelength range corresponding to the transmission spectrum peak of the second green color resistance 702 is less than or equal to 525 ± 5 nanometers.
The middle of G _ AA is the first green color resistance 402 located in the central region H1, and G _ Curve is the second green color resistance 702 located in the edge region H2.
In one embodiment, referring to fig. 7, the wavelength range corresponding to the peak of the transmittance spectrum of the first blue color resist 403 is 460 ± 5 nm; the wavelength range corresponding to the peak of the transmission spectrum of the second blue color resistor 703 is less than or equal to 455 +/-5 nm.
The middle of the B _ AA is the first blue color filter 403 located in the central region H1, and the B _ cut is the second blue color filter 703 located in the edge region H2.
In one embodiment, the area of the orthographic projection of the second red color resistor 701 on the cover plate 60 is larger than the area of the orthographic projection of the first red color resistor 401 on the cover plate 60.
In one embodiment, the area of the front projection of the second blue color resistor 703 on the cover 60 is larger than the area of the front projection of the first blue color resistor 403 on the cover 60.
In one embodiment, the area of the orthographic projection of the second green color resistor 702 on the cover 60 is larger than the area of the orthographic projection of the first green color resistor 402 on the cover 60.
In the above embodiment, by making the area of each color resistance in the second color filter 70 larger than that in the first color filter 40; the aperture ratio of the second color filter 70 is larger than that of the first color filter 40, so as to further improve the brightness of the edge region H2.
In one embodiment, the area of the front projection of the second black matrix 704 on the cover 60 is smaller than the area of the front projection of the first black matrix 404 on the cover 60.
In one embodiment, the density of the second black matrix 704 disposed in the edge region H2 is less than the density of the first black matrix 404 disposed in the center region H1.
In one embodiment, in the second color filter 70 in the edge region H2, the arrangement density of the color resistances increases along the direction from the central region H1 to the edge region H2.
Wherein the disposing density of the second red color resists 701 increases along the direction from the central region H1 to the edge region H2.
Wherein the disposing density of the second blue color resists 703 increases along the direction from the central region H1 to the edge region H2.
Wherein the disposing density of the second green color resists 702 increases along the direction from the central region H1 to the edge region H2.
Wherein the arrangement density of the second black matrix 704 is decreased in a direction from the central region H1 to the edge region H2.
Wherein the area of the orthographic projection of the color resistance on the cover 60 increases in a direction away from the central region H1.
Wherein the orthographic area of the second black matrix 704 on the cover 60 is decreased in a direction away from the central region H1.
In one embodiment, referring to fig. 8, for white light, at the same wavelength, the transmittance of the first color filter 40 in the middle area is less than the transmittance of the second color filter 70 in the edge area H2.
Referring to fig. 9, an embodiment of the present application provides a method for manufacturing a display module 1, including:
s1: providing a display panel, wherein the display area of the display panel comprises a central area H1, and an edge area H2 positioned outside the central area H1;
s2: preparing a first color filter 40 in a central area H1 on one side of the display panel through a first photomask;
s3: preparing a second color filter 70 in an edge area H2 on the same side of the display panel through a second photomask;
s4: and a cover plate 60 is attached to the sides of the first color filter 40 and the second color filter 70 far away from the display panel.
This application has still provided a display device, display device includes above-mentioned display module assembly, and this is no longer repeated here.
The display module provided by this embodiment includes a display panel, a color filter layer, and a cover plate, where a display area of the display module includes a central area and an edge area located outside the central area, the color filter layer is disposed in a light-emitting direction of the display panel, the color filter includes a first color filter located in the central area and a second color filter located in the edge area, and the cover plate is disposed on one side of the color filter layer away from the display panel, where a wavelength corresponding to a transmission spectrum peak of the second color filter is smaller than a wavelength corresponding to a transmission spectrum peak of the first color filter; the transmission spectrum of the second color filter is matched with the peak value of the light-emitting spectrum of the large-angle light, more large-angle light can transmit the second color filter, the brightness of the edge area is improved, the uniformity of the brightness of the display area is improved, and the dark band of the edge position of the display area is reduced.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The display module and the preparation method of the display module provided by the embodiment of the application are described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The utility model provides a display module assembly, display module assembly's display area includes central zone, is located the marginal area of central zone outside, its characterized in that includes:
a display panel;
the color filter layer is arranged in the light emergent direction of the display panel and comprises a first color filter positioned in a central area and a second color filter positioned in an edge area;
the wavelength corresponding to the transmission spectrum peak value of the second color filter is smaller than the wavelength corresponding to the transmission spectrum peak value of the first color filter.
2. The display module as claimed in claim 1, wherein the wavelength corresponding to the transmission spectrum peak of the second color filter is lower than the wavelength corresponding to the transmission spectrum peak of the first color filter by a first predetermined value, and the first predetermined value is greater than or equal to 5 nm.
3. The display module of claim 2, wherein the first color filter comprises a first red color resistor, a first blue color resistor, a first green color resistor, and a first black matrix, the second color filter comprises a second red color resistor, a second blue color resistor, a second green color resistor, and a second black matrix, and the second color filter further comprises a brightness enhancement portion for enhancing a light transmittance of the second color filter.
4. The display module as claimed in claim 3, wherein the wavelength range corresponding to the peak value of the transmittance spectrum of the first red color resistance is 605 ± 5 nm; the wavelength range corresponding to the transmission spectrum peak value of the second red color resistance is less than or equal to 600 +/-5 nanometers.
5. The display module as claimed in claim 3, wherein the wavelength range corresponding to the peak value of the transmittance spectrum of the first green color resistance is 530 ± 5 nm; the wavelength range corresponding to the transmission spectrum peak value of the second green color resistance is less than or equal to 525 +/-5 nanometers.
6. The display module as claimed in claim 3, wherein the wavelength range corresponding to the peak value of the transmittance spectrum of the first blue color resistance is 460 ± 5 nm; the wavelength range corresponding to the transmission spectrum peak value of the second blue color resistance is less than or equal to 455 +/-5 nanometers.
7. The display module as claimed in claim 3, wherein the area of the front projection of the second red resistor on the cover plate is larger than the area of the front projection of the first red resistor on the cover plate.
8. The display module of claim 7, wherein an area of the second black matrix in an orthographic projection of the cover plate is smaller than an area of the first black matrix in the orthographic projection of the cover plate.
9. The display module of claim 8, wherein the arrangement density of the second black matrix in the edge region is less than the arrangement density of the first black matrix in the central region.
10. A preparation method of a display module is characterized by comprising the following steps:
providing a display panel, wherein a display area of the display panel comprises a central area and an edge area positioned outside the central area;
preparing a first color filter in the central area of one side of the display panel through a first photomask;
Preparing a second color filter in the edge area on the same side of the display panel through a second photomask;
and attaching a cover plate to one side of the first color filter and one side of the second color filter, which are far away from the display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210455952.7A CN114759076A (en) | 2022-04-24 | 2022-04-24 | Display module and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210455952.7A CN114759076A (en) | 2022-04-24 | 2022-04-24 | Display module and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115240560A (en) * | 2022-08-24 | 2022-10-25 | 合肥维信诺科技有限公司 | Flexible display screen and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115240560A (en) * | 2022-08-24 | 2022-10-25 | 合肥维信诺科技有限公司 | Flexible display screen and display device |
| CN115240560B (en) * | 2022-08-24 | 2023-08-18 | 合肥维信诺科技有限公司 | Flexible display screen and display device |
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