CN115763463A

CN115763463A - Display panel

Info

Publication number: CN115763463A
Application number: CN202211523122.XA
Authority: CN
Inventors: 陈黎暄
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-03-07

Abstract

The embodiment of the application discloses a display panel, which comprises a plurality of pixel units, wherein the display panel at least comprises a first substrate and a second substrate which are positioned on different layers, each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel comprises a first driving unit, the second sub-pixel comprises a second driving unit, and the third sub-pixel comprises a third driving unit, wherein at least one of the sub-pixels is arranged on the first substrate, at least one of the sub-pixels is arranged on the second substrate, and at least one of the first driving unit, the second driving unit and the third driving unit is arranged in an overlapped mode in the film thickness direction; by spatially multiplexing different driving units of different sub-pixels, the setting width of at least one driving unit in one pixel unit can be saved, thereby increasing the number of pixels which can be designed in unit area and improving the resolution of the display panel.

Description

Display panel

Technical Field

The application relates to the technical field of OLED display, in particular to a display panel.

Background

For a high-resolution LED display, the realization of ultrahigh resolution is limited by the size of an LED chip, the opening rate of a drive circuit wiring and other factors, and because a drive unit of an LED occupies a certain space and a certain process interval is needed between the LED and the LED to ensure the realization of transfer or die bonding process, the resolution of the design is limited by the size of the drive unit and the size of the LED chip. Meanwhile, the light emitting efficiency of an excessively small LED, for example, an LED having a size of 15 μm or less, is poor.

Therefore, the conventional display panel has the technical problem that the width of the pixel unit is large, so that the resolution is insufficient.

Disclosure of Invention

The embodiment of the application provides a display panel, which can solve the technical problem that the prior display panel has insufficient resolution due to large width of pixel units.

The embodiment of the application provides a display panel, including a plurality of pixel units, display panel includes a plurality of substrate base plates that are located different layers, substrate base plate is transparent base plate, a plurality of substrate base plates include first substrate, second substrate at least, pixel unit includes:

the first sub-pixel comprises a first driving unit and a first light emitting unit, and the first driving unit is electrically connected with the first light emitting unit through a first routing;

the second sub-pixel comprises a second driving unit and a second light emitting unit, and the second driving unit is electrically connected with the second light emitting unit through a second wiring;

the third sub-pixel comprises a third driving unit and a third light-emitting unit, and the third driving unit is electrically connected with the third light-emitting unit through a third wiring;

wherein at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel is disposed on the first substrate, at least another one of the first sub-pixel, the second sub-pixel, and the third sub-pixel is disposed on the second substrate, and at least two of the first driving unit, the second driving unit, and the third driving unit are disposed in an overlapping manner in a film thickness direction.

Optionally, in some embodiments of the present application, the first light emitting unit, the second light emitting unit, and the third light emitting unit are disposed in a staggered manner, and a distance between the first light emitting unit and the adjacent second light emitting unit and third light emitting unit is less than or equal to 5 micrometers.

Optionally, in some embodiments of the present application, a distance between the third light emitting unit and the third driving unit is greater than a distance between the second light emitting unit and the second driving unit and greater than a distance between the first light emitting unit and the first driving unit, and the first sub-pixel, the second sub-pixel, and the third sub-pixel are arranged at periodic intervals.

Optionally, in some embodiments of the application, the third trace, the first light emitting unit, and the second light emitting unit are disposed in a staggered manner in a film thickness direction, and the second trace and the first light emitting unit are disposed in a staggered manner in the film thickness direction.

Optionally, in some embodiments of the present application, a material for preparing the second trace and the third trace is a transparent material.

Optionally, in some embodiments of the present application, the substrate base plate further includes a third substrate, the first sub-pixel is disposed on the first substrate, the second sub-pixel is disposed on the second substrate, the third sub-pixel is disposed on the third substrate, and the first substrate, the second substrate, and the third substrate are disposed in parallel to each other in a film thickness direction.

Optionally, in some embodiments of the present application, an area of an orthogonal projection of the first driving unit on the first substrate, an area of an orthogonal projection of the second driving unit on the second substrate, and an area of an orthogonal projection of the third driving unit on the third substrate are equal, and the first driving unit, the second driving unit, and the third driving unit are disposed in a manner of overlapping in a film thickness direction.

Optionally, in some embodiments of the present application, any two of the first sub-pixel, the second sub-pixel, and the third sub-pixel are disposed on the first substrate, and another one of the first sub-pixel, the second sub-pixel, and the third sub-pixel is disposed on the second substrate.

Optionally, in some embodiments of the present application, the first light-emitting unit is a first LED lamp, the second light-emitting unit is a second LED lamp, the third light-emitting unit is a third LED lamp, and light-emitting colors of the first LED lamp, the second LED lamp, and the third LED lamp are different.

Optionally, in some embodiments of the present application, the substrate base substrate has a thickness of less than or equal to 0.25 mm.

Has the advantages that: at least two of the first, second, and third drive units are arranged in a manner overlapping in the film thickness direction, and different drive units of different sub-pixels are spatially multiplexed

Therefore, at least one driving unit can be omitted in one pixel unit, so that the number of pixels which can be designed in unit area 5 is increased, and the resolution of the display panel is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the embodiments will be described in the following

The drawings that need to be used are briefly introduced, it is obvious that the drawings in the following description are only some embodiments of the present application 0, and that other drawings can be derived from these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a first exploded schematic view of a display panel provided in the present application;

FIG. 2 is a schematic cross-sectional view of a first substrate of a display panel provided herein;

FIG. 3 is a schematic cross-sectional view of a second substrate of the display panel provided herein;

FIG. 4 is a second exploded view of the display panel provided herein;

FIG. 5 is a schematic cross-sectional view of a second substrate of a display panel provided herein;

FIG. 6 is a schematic cross-sectional view of a second substrate of the display panel provided herein;

FIG. 7 is a schematic cross-sectional view of a third substrate of a display panel provided by the present application;

FIG. 8 is a schematic diagram of a first pixel arrangement of a display panel provided in the present application;

fig. 9 is a schematic diagram of a second pixel arrangement of the display panel 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.

Referring to fig. 1, 4, 8, and 9, a display panel provided in the present application includes a plurality of pixel units 4, the display panel includes a plurality of substrate base plates located at different layers, the substrate base plates are transparent base plates, the plurality of substrate base plates include at least a first substrate 1 and a second substrate 2, the pixel unit 4 includes a first sub-pixel 10, a second sub-pixel 20, and a third sub-pixel 30, the first sub-pixel 10 includes a first driving unit 101 and a first light emitting unit 102, the first driving unit 101 is electrically connected to the first light emitting unit 102 through a first routing 103, the second sub-pixel 20 includes a second driving unit 201 and a second light emitting unit 202, the second driving unit 201 is electrically connected to the second light emitting unit 202 through a second 203, the third sub-pixel 30 includes a third driving unit 301 and a third light emitting unit 302, the third driving unit 301 is electrically connected to the third light emitting unit 302 through a third routing, wherein at least one of the first sub-pixel 10, the second sub-pixel 20, the third sub-pixel unit 302 is disposed on the second substrate base plate 101, the second sub-pixel 20, and the third sub-pixel 30 are disposed in the second sub-pixel 20, and the second sub-pixel 20.

In this embodiment, at least two of the first driving unit 101, the second driving unit 201, and the third driving unit 301 are overlapped in the film thickness direction, and different driving units of different sub-pixels are spatially multiplexed, so that at least one driving unit installation width can be omitted in one pixel unit 4, thereby increasing the number of pixels that can be designed per unit area and increasing the resolution of the display panel.

The technical solution of the present application will now be described with reference to specific embodiments.

The embodiment of the present application only takes the LED direct display as an example, and the display panel may also be an OLED display panel, an MLED display panel, or the like, and is also applicable to other schemes that drive the light emitting unit by using the driving unit. In addition, the distance, the installation position, the thickness, the selected material, etc. of the present application are only described in the best or preferred embodiment, and other embodiments that can satisfy the technical effects of the present application shall also belong to the protection scope of the present application, and are not described herein again.

In one embodiment, the first light emitting unit 102, the second light emitting unit 202, and the third light emitting unit 302 are disposed in a staggered manner, and a distance between the first light emitting unit 102 and the adjacent second light emitting unit 202 and third light emitting unit 302 is less than or equal to 5 micrometers.

It will be appreciated that the spacing between adjacent different colour light emitting elements is less than or equal to 5 microns by spatially multiplexing the different drive elements of the different sub-pixels.

Among them, for example: the width of the driving unit is 30 micrometers, in one pixel unit 4, different driving units are spatially multiplexed and combined in a driving space of 30 micrometers, the width of 2 x 30 micrometers is saved for the pixel unit 4, the width of the total pixel is reduced by 60 micrometers, and under the condition that the size of the light emitting unit is not reduced, the width of the pixel unit 4 is reduced, so that the number of the pixel units 4 is favorably increased.

In this embodiment, after the setting of spatial multiplexing of the driving units is performed, the distance between the first light emitting unit 102 and the adjacent second light emitting unit 202 and third light emitting unit 302 can be set to be less than or equal to 5 micrometers, so that the width of the pixel unit 4 is further reduced.

In an embodiment, referring to fig. 2, fig. 3, and fig. 8, a distance between the third light emitting unit 302 and the third driving unit 301 is greater than a distance between the second light emitting unit 202 and the second driving unit 201 and greater than a distance between the first light emitting unit 102 and the first driving unit 101, and the first sub-pixel 10, the second sub-pixel 20, and the third sub-pixel 30 are arranged at periodic intervals.

In one pixel unit 4, the third light emitting unit 302 is farthest from the driving unit, the second light emitting unit 202 is next to the driving unit, and the first light emitting unit 102 is closest to the driving unit.

The first light emitting unit 102, the second light emitting unit 202, and the third light emitting unit 302 may be any one of a red light emitting unit, a green light emitting unit, and a blue light emitting unit, and the first light emitting unit 102, the second light emitting unit 202, and the third light emitting unit 302 all have different light emitting colors.

In this embodiment, the first sub-pixel 10, the second sub-pixel 20, and the third sub-pixel 30 are arranged at intervals, which is more mainstream, and can simplify the manufacturing process and reduce the manufacturing cost.

In an embodiment, the third wire 303, the first light emitting unit 102 and the second light emitting unit 202 are disposed in a staggered manner in a film thickness direction, and the second wire 203 and the first light emitting unit 102 are disposed in a staggered manner in the film thickness direction.

The size range of any light-emitting unit is less than 200 micrometers, and the size range of any sub-pixel is greater than 300 micrometers.

The third wire 303 is disposed to avoid the first light emitting unit 102 and the second light emitting unit 202, and the second wire 203 is disposed to avoid the first light emitting unit 102, so as to avoid the wire from shielding the light emitting unit, and improve the light emitting efficiency of the display panel.

The second trace 203 and the third trace 303 may have at least one of a zigzag shape, an arc shape and a step shape.

It can be understood that the size of the light emitting unit is relatively small compared to the size of the pixel unit 4, and the space where the trace exists can avoid the light emitting unit.

In one embodiment, the second trace 203 and the third trace 303 are made of a transparent material.

The transparent material is a conductive material, the transparent material may be at least one of indium tin oxide, polyethylenedioxythiophene, and graphene, and the second trace 203 and the third trace 303 may also be at least one of a carbon nanorod and a silver nanowire.

It can be understood that the second wire 203 is set to be a transparent material so as to prevent the second wire 203 from shielding the first light emitting unit 102, and the third wire 303 is set to be a transparent material so as to prevent the third wire 303 from shielding the first light emitting unit 102 and the second light emitting unit 202.

It can be understood that when the second trace 203 and the third trace 303 are made of a transparent material, the second trace 203 and the third trace 303 do not need to be bent, and the second trace 203 and the third trace 303 can be arranged in a straight line segment, so as to reduce the occupation of the trace on the space in the pixel unit 4.

Further, the preparation material of the first trace 103 may be the same as that of the second trace 203 and the third trace 303, so as to reduce the preparation cost.

In this embodiment, set up to transparent material through making some walk the line, avoid walking the sheltering from to the luminescence unit to promote display panel's luminous efficacy, simultaneously, still can make the setting of walking the line need not to dodge the luminescence unit, thereby reduce the occupation of walking the line to 4 inner spaces of pixel unit.

In one embodiment, the second substrate 2 and the third substrate 3 are disposed in a light outgoing direction of the first substrate 1.

The preparation material of the first trace 103 may be a non-transparent material.

It can be understood that, since the first wire 103 is located on the first substrate 1, the first wire 103 is not disposed in the light emitting direction of the first light emitting unit 102, the second light emitting unit 202, and the third light emitting unit 302, and does not block the light emitting units, and the first wire 103 is not disposed in the light emitting direction, the preparation material of the first wire 103 can be freely selected, and the overall light emitting rate is not affected.

In this embodiment, the second substrate 2 and the third substrate 3 are disposed in the light emitting direction of the first substrate 1, so that the first wire 103 does not block the light emitting, thereby improving the light emitting efficiency.

Similarly, in an embodiment, the first substrate 1 and the third substrate 3 are disposed in the light outgoing direction of the second substrate 2.

In another embodiment, the first substrate 1 and the second substrate 2 are disposed in a light outgoing direction of the third substrate 3.

In an embodiment, referring to fig. 4 to 7, the substrate further includes a third substrate 3, the first sub-pixel 10 is disposed on the first substrate 1, the second sub-pixel 20 is disposed on the second substrate 2, the third sub-pixel 30 is disposed on the third substrate 3, and the first substrate 1, the second substrate 2, and the third substrate 3 are disposed in parallel to each other in a film thickness direction.

The first light emitting unit 102, the second light emitting unit 202, and the third light emitting unit 302 are disposed in a staggered manner in the film thickness direction.

It is understood that the film thickness directions referred to in this application are: perpendicular to the direction of at least one substrate in the display panel.

It should be noted that when there is a fourth sub-pixel, the fourth sub-pixel may be a white sub-pixel, a fourth substrate may be further provided, and similarly, the fourth substrate and the other substrates are parallel to each other, and the driving unit of the white sub-pixel may be spatially multiplexed with the driving units of the other sub-pixels.

It should be noted that, by respectively disposing the sub-pixels with different colors on different substrate substrates, the spatial multiplexing of the driving units not only reduces the width of the pixel unit 4 and improves the resolution of pixel arrangement, but also improves the aperture ratio due to the mutual overlapping of the driving units.

In this embodiment, the first sub-pixel 10, the second sub-pixel 20, and the third sub-pixel 30 are respectively disposed on different substrate boards, and the substrate boards are parallel to each other, so that the first driving unit 101, the second driving unit 201, and the third driving unit 301 overlap each other to realize spatial multiplexing.

In one embodiment, an area of an orthogonal projection of the first driving unit 101 on the first substrate 1, an area of an orthogonal projection of the second driving unit 201 on the second substrate 2, and an area of an orthogonal projection of the third driving unit 301 on the third substrate 3 are equal, and the first driving unit 101, the second driving unit 201, and the third driving unit 301 are disposed to overlap each other in a film thickness direction.

Wherein the substrate base plate may have a thickness of less than 0.4 mm.

It can be understood that the solution of disposing each sub-pixel on a substrate is suitable for a larger-sized display panel, and the larger-sized display panel is when the size is at least larger than 17 inches, at this time, the stacking of a plurality of substrate substrates results in a higher thickness in the film thickness direction, but due to the larger panel size, the phenomenon that the sub-pixels with different colors are not coplanar is difficult to occur.

In this embodiment, the aperture ratio and the resolution are further improved by setting the areas of the driving units of different sub-pixels to be uniform and spatially multiplexing and overlapping the different driving units in the film thickness direction.

In one embodiment, referring to fig. 1 to 3, any two of the first sub-pixel 10, the second sub-pixel 20, and the third sub-pixel 30 are disposed on the first substrate 1, and another one of the first sub-pixel 10, the second sub-pixel 20, and the third sub-pixel 30 is disposed on the second substrate 2.

The display panel only comprises a first substrate 1 and a second substrate 2, wherein the first substrate 1 and the second substrate 2 are arranged in parallel.

It can be understood that the technical solution of respectively disposing the three different color sub-pixels on the first substrate 1 and the second substrate 2 is applicable to a display panel with a smaller size, and the thickness of the substrate in the film thickness direction is higher due to the stacked arrangement of the substrate substrates, so that the phenomenon that the different color sub-pixels display non-coplanarity is likely to occur.

In one embodiment, the first light emitting unit 102 is a first LED lamp, the second light emitting unit 202 is a second LED lamp, and the third light emitting unit 302 is a third LED lamp, and the first LED lamp, the second LED lamp, and the third LED lamp emit light with different colors.

Wherein the first LED lamp may emit red light, the second LED lamp may emit blue light, and the third LED lamp may emit green light.

In one embodiment, the substrate base substrate has a thickness of less than or equal to 0.25 millimeters.

The substrate base plate can be a plastic base plate, and the thickness of the plastic base plate is smaller than that of a common glass base plate.

In an embodiment, referring to fig. 9, the first sub-pixel 10, the second sub-pixel 20, and the third sub-pixel 30 may be arranged in a disorder manner, or adjacent pixel units 4 share one sub-pixel.

Wherein any one of the first sub-pixel 10, the second sub-pixel 20, and the third sub-pixel 30 is a blue sub-pixel.

In this embodiment, the first sub-pixel 10, the second sub-pixel 20, and the third sub-pixel 30 are arranged in a random order, so that the blue sub-pixels are arranged in a random manner, thereby reducing dark fringes.

This application has still provided a display module assembly, a display device, the display module assembly with display device all includes above-mentioned display panel, and here is no longer repeated.

The display panel provided by this embodiment includes a plurality of pixel units, the display panel includes a plurality of substrate base plates located at different layers, the substrate base plates are transparent base plates, the plurality of substrate base plates at least include a first substrate and a second substrate, the pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel includes a first driving unit and a first light emitting unit, the first driving unit is electrically connected with the first light emitting unit through a first routing, the second sub-pixel includes a second driving unit and a second light emitting unit, the second driving unit is electrically connected with the second light emitting unit through a second routing, the third sub-pixel includes a third driving unit and a third light emitting unit, the third driving unit is electrically connected with the third light emitting unit through a third routing, wherein at least one of the first routing sub-pixel, the second sub-pixel and the third sub-pixel is disposed on the first substrate, at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel is disposed on the second substrate base plate, and at least one of the second driving unit is disposed on the first substrate base plate and the second driving unit; at least two of the first driving unit, the second driving unit and the third driving unit are overlapped in the film thickness direction, and different driving units of different sub-pixels are spatially multiplexed, so that the arrangement width of at least one driving unit in one pixel unit can be saved, the number of pixels which can be designed in unit area is increased, and the resolution of the display panel is increased.

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 related descriptions of other embodiments.

The display panel provided by the embodiment of the present application is described in detail above, and the principle and the implementation of the present application are explained in this document by applying specific examples, and the description of the above embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A display panel comprises a plurality of pixel units, and is characterized in that the display panel comprises a plurality of substrate base plates positioned on different layers, the substrate base plates are transparent base plates, the substrate base plates at least comprise a first substrate and a second substrate, and the pixel units comprise:

2. The display panel according to claim 1, wherein the first light emitting unit, the second light emitting unit, and the third light emitting unit are disposed in a staggered manner, and a distance between the first light emitting unit and the adjacent second light emitting unit and third light emitting unit is less than or equal to 5 μm.

3. The display panel according to claim 1, wherein a distance between the third light emitting unit and the third driving unit is greater than a distance between the second light emitting unit and the second driving unit and greater than a distance between the first light emitting unit and the first driving unit, and the first sub-pixel, the second sub-pixel, and the third sub-pixel are arranged at periodic intervals.

4. The display panel according to claim 3, wherein the third traces are disposed in a staggered manner in a film thickness direction with respect to the first light emitting cells and the second light emitting cells, and the second traces are disposed in a staggered manner in the film thickness direction with respect to the first light emitting cells.

5. The display panel according to claim 3, wherein the second traces and the third traces are made of a transparent material.

6. The display panel according to claim 1, wherein the substrate base plate further includes a third substrate, wherein the first sub-pixel is provided over the first substrate, wherein the second sub-pixel is provided over the second substrate, wherein the third sub-pixel is provided over the third substrate, and wherein the first substrate, the second substrate, and the third substrate are provided in parallel with each other in a film thickness direction.

7. The display panel according to claim 6, wherein an area of an orthogonal projection of the first driving unit on the first substrate, an area of an orthogonal projection of the second driving unit on the second substrate, and an area of an orthogonal projection of the third driving unit on the third substrate are equal, and the first driving unit, the second driving unit, and the third driving unit are provided to overlap in a film thickness direction.

8. The display panel according to claim 1, wherein any two of the first subpixel, the second subpixel, and the third subpixel are provided over the first substrate, and wherein another one of the first subpixel, the second subpixel, and the third subpixel is provided over the second substrate.

9. The display panel according to claim 1, wherein the first light-emitting unit is a first LED lamp, the second light-emitting unit is a second LED lamp, the third light-emitting unit is a third LED lamp, and light emission colors of the first LED lamp, the second LED lamp, and the third LED lamp are different.

10. The display panel of claim 1, wherein the substrate base substrate has a thickness of 0.25 mm or less.