WO2023093270A1

WO2023093270A1 - Display screen and display device

Info

Publication number: WO2023093270A1
Application number: PCT/CN2022/121371
Authority: WO
Inventors: 王朝; 朱卫强
Original assignee: 深圳市洲明科技股份有限公司
Priority date: 2021-11-24
Filing date: 2022-09-26
Publication date: 2023-06-01

Abstract

The present application relates to a display screen and a display device. The display screen comprises: a light-emitting layer (10) comprising a plurality of pixel units (11) distributed in an array, each pixel unit (11) comprising three-color LEDs (12) sequentially arranged in a first direction, and the three-color LEDs (12) comprising a red-light LED, a green-light LED, and a blue-light LED; a reflective layer (20) provided opposite to the light-emitting layer (10); and a backlight gain layer (30) located on the side of the light-emitting layer (10) facing away from the reflective layer (20). The backlight gain layer (30) comprises a plurality of focusing units (31) distributed in an array, the focusing units (31) are in one-to-one correspondence with the pixel units (11), and each focusing unit (31) is provided opposite to the corresponding pixel unit (11).

Description

Display screens and display devices

Cross References to Related Applications

This application claims the priority of the Chinese patent application filed on November 24, 2021, with the application number 2021114063947, named "display screen", and claims the application filed on November 24, 2021, with the application number 2021114078552, named " The priority of the Chinese patent application for "display screen", which is hereby incorporated by reference in its entirety.

technical field

The present application relates to the field of display technology, in particular to a display screen and a display device.

Background technique

The ultra-high resolution of the display screen has always been an important parameter pursued by the display screen field. The LED (Light Emitting Diode, light-emitting diode) display is limited by the lamp bead process, and the resolution is low.

Using liquid crystal grains to divide a pixel unit into multiple sub-pixels can increase the resolution of the display screen, but the brightness of the display screen will be reduced.

Contents of the invention

According to various embodiments of the present application, a display screen and a display device are provided.

In a first aspect, the present application provides a display screen, which includes:

The light-emitting layer includes a plurality of pixel units distributed in an array, and each pixel unit includes three-color LEDs arranged in sequence along the first direction, and the three-color LEDs include red LEDs, green LEDs, and blue LEDs;

a reflective layer arranged opposite to the light-emitting layer;

The backlight gain layer is located on the side of the light-emitting layer facing away from the reflective layer; the backlight gain layer includes a plurality of focusing units distributed in an array, and the focusing units correspond to the pixel units one by one, and each of the focusing units The focusing unit is set opposite to the corresponding pixel unit.

In one of the embodiments, each focusing unit includes a plurality of tapered optical elements distributed around the center of the focusing unit.

In one of the embodiments, each of the focusing units includes a focusing lens.

In one of the embodiments, each of the focusing units includes a focusing lens and a plurality of conical optical elements arranged in sequence along a direction away from the light-emitting layer, and the plurality of conical optical elements surround the center of the focusing unit distributed.

In one of the embodiments, the display screen also includes:

The liquid crystal layer is located on the side of the backlight gain layer facing away from the light-emitting layer; the liquid crystal layer includes a plurality of liquid crystal grains distributed in an array, and each LED is arranged opposite to the plurality of liquid crystal grains.

In one of the embodiments, the display screen also includes:

The light-absorbing layer is located on the side of the liquid crystal layer facing away from the light-emitting layer, and is at least opposite to the gap between two adjacent liquid crystal crystal grains.

In one of the embodiments, the light-absorbing layer includes conical protrusions disposed opposite to the gap between two adjacent liquid crystal crystal grains, and the cross-sectional area of the conical protrusions is along the direction away from the liquid crystal layer. direction gradually decreases.

In one of the embodiments, the light absorbing layer includes an inkjet layer disposed on the gap between two adjacent liquid crystal crystal grains.

In one of the embodiments, the light absorbing layer includes an antireflection and antireflection film disposed on the liquid crystal layer.

In one of the embodiments, the display screen also includes:

The sealing layer is located between the backlight gain layer and the light emitting layer.

In a second aspect, the present application provides a display screen, which includes:

a liquid crystal layer comprising a plurality of liquid crystal grains distributed in an array; and

Each LED is set opposite to a plurality of the liquid crystal grains;

The reflective layer is disposed opposite to the light emitting layer and located on a side of the light emitting layer facing away from the liquid crystal layer.

In one embodiment, liquid crystal grains in two adjacent columns are arranged alternately along the column direction of the array, and liquid crystal grains in two adjacent rows are alternately arranged along the row direction of the array.

In one embodiment, the liquid crystal grains in the same column belong to the same sub-pixel, and the liquid crystal grains in the same row belong to different sub-pixels.

In one of the embodiments, the conduction time of the liquid crystal grains in two adjacent sub-pixels of the same sub-pixel is the same, and the conduction time of the liquid crystal grains in two adjacent sub-pixels is different.

In one of the embodiments, among the two liquid crystal grains adjacent to the same liquid crystal grain, the two liquid crystal grains in the same row belong to the same sub-pixel, and the two liquid crystal grains in the same column belong to the same sub-pixel; two adjacent liquid crystal grains belong to different sub-pixels.

In one of the embodiments, the conduction times of the liquid crystal grains in two adjacent sub-pixels are different.

In a third aspect, the present application provides a display device, and the display device includes the display screen as provided in the first aspect.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the present application will be apparent from the description, drawings and claims.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the traditional technology. Obviously, the accompanying drawings in the following description are only the present invention For the embodiments of the application, those skilled in the art can also obtain other drawings based on the disclosed drawings without creative effort.

FIG. 1 is a schematic structural diagram of a display screen in one or more embodiments of the present application;

FIG. 2 is a diagram of the corresponding relationship between the liquid crystal layer and the light-emitting layer in one or more embodiments of the present application;

FIG. 3 is a schematic structural diagram of a backlight gain layer in one or more embodiments of the present application;

FIG. 4 is a diagram of the corresponding relationship between the liquid crystal layer and the light-emitting layer in one or more embodiments of the present application;

FIG. 5 is a diagram of the corresponding relationship between the liquid crystal layer and the light-emitting layer in one or more embodiments of the present application;

FIG. 6 is a schematic structural diagram of an inkjet layer in one or more embodiments of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Herein, spatially relative terms such as "upper" and "lower" are defined with reference to the accompanying drawings. Accordingly, it will be understood that "upper" and "lower" may be used interchangeably. It will be understood that when a layer is referred to as being 'on' another layer, it can be formed directly on the other layer, or intervening layers may also be present. Thus, it will be understood that when a layer is referred to as being "directly on" another layer, there are no intervening layers interposed therebetween.

In the drawings, the dimensions of layers and regions may be exaggerated for clarity of illustration. It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may also be present. In addition, it will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present. layer. In addition, like reference numerals denote like elements throughout.

Hereinafter, although terms such as 'first', 'second', etc. may be used to describe various components, the components are not necessarily limited to the above terms. The above terms are only used to distinguish one component from another. It will also be understood that expressions used in the singular include expressions in the plural unless the expressions in the singular have clearly different meanings in context. In addition, in the following embodiments, it will also be understood that the terms "comprising" and/or "having" used herein indicate the presence of stated features or components, but do not exclude the presence or addition of one or more other features or components.

In the following embodiments, when layers, regions or elements are "connected", it can be interpreted that the layers, regions or elements are connected not only directly but also through other constituent elements interposed therebetween. For example, when layers, regions, elements, etc. are described as being connected or electrically connected, the layers, regions, elements, etc. may not only be directly connected or directly electrically connected, but may also be connected through another layer, region, etc. interposed therebetween. , components, etc. are connected or electrically connected.

As used in the application documents, the term "and/or" includes any and all combinations of one or more of the associated listed items. When an expression such as "at least one of" is placed after a list of elements (elements), it modifies the entire list of elements (elements), not the individual elements (elements) of the list.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the description of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It should also be understood that the terms "comprising/comprising" or "having" etc. specify the presence of stated features, integers, steps, operations, components, parts or combinations thereof, but do not exclude the presence or addition of one or more The possibility of other features, integers, steps, operations, components, parts or combinations thereof.

An electronic or electrical device and/or any other related device or component (for example, a display device including a display panel and a display panel driver, wherein the display panel driver further includes a drive controller) according to embodiments of the present application concepts described herein , gate driver, gamma reference voltage generator, data driver and emission driver) may be implemented using any suitable hardware, firmware (eg ASIC), software or a combination of software, firmware and hardware. For example, the various components of these devices may be formed on one integrated circuit (IC) chip or on separate IC chips. Additionally, various components of these devices may be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on one substrate. In addition, various components of these devices may run on one or more processors in one or more computing devices to execute computer program instructions and interact with other system components to perform the various functions described herein process or thread. Computer program instructions are stored in memory, which may be implemented in a computing device using standard storage devices such as, for example, random access memory (RAM). Computer program instructions may also be stored on other non-transitory computer-readable media such as, for example, such as CD-ROMs, flash drives, etc.). Moreover, those skilled in the art will recognize that the functionality of various computing devices may be combined or integrated into a single computing device, or that the functionality of a particular computing device may be distributed among one or more other computing devices without departing from the spirit and scope of the exemplary embodiments of the concepts of the present application.

While exemplary embodiments of a display module and a display device including a display module have been particularly described herein, many modifications and variations will be apparent to those skilled in the art. It will thus be appreciated that display modules constructed in accordance with the principles of the present application, and display devices including display modules, may be implemented other than as specifically described herein. This application is also limited by the claims and their equivalents.

As mentioned in the background technology, the LED display screen in the traditional technology has the problem of low brightness. The inventors found that the reason for this problem is that the light emitted by the light-emitting layer will be screened by the liquid crystal layer, sealing layer and other film layers. As a result, the light loss is relatively large, and finally the brightness of the display screen is low.

Based on the above reasons, the present application provides a display screen. By setting a backlight gain layer and a reflective layer respectively before and after the light-emitting layer, the reflective layer is arranged opposite to the light-emitting layer, and the backlight gain layer includes a plurality of focusing units distributed in an array. The focusing unit There is a one-to-one correspondence with the pixel units, and each focusing unit is set opposite to the corresponding pixel unit, so that the backlight gain layer cooperates with the reflective layer to reflect ambient light to the pixel unit intensively, thereby improving the brightness of the display screen.

Referring to FIG. 1 , an embodiment of the present application provides a display screen, which includes a light emitting layer 10 , a reflective layer 20 and a backlight gain layer 30 . As shown in Figure 2, the light-emitting layer 10 includes a plurality of pixel units 11 distributed in an array, each pixel unit 11 includes three-color LEDs 12 arranged in sequence along the first direction, and the three-color LEDs 12 include red LEDs, green LEDs and blue LEDs. The reflective layer 20 is disposed opposite to the light emitting layer 10 . The backlight gain layer 30 is located on the side of the light emitting layer 10 facing away from the reflective layer 20 . As shown in FIG. 3 , the backlight gain layer 30 includes a plurality of focusing units 31 distributed in an array, the focusing units 31 correspond to the pixel units 11 one by one, and each focusing unit 31 is arranged opposite to the corresponding pixel unit 11 .

In this embodiment, the light-emitting layer may be COB (Chips on Board, chip on board package), which performs backlighting and content display at the same time.

The display screen includes a luminescent layer, a reflective layer and a backlight gain layer, the luminescent layer includes a plurality of pixel units distributed in an array, each pixel unit includes three-color LEDs arranged in sequence along the first direction, and the three-color LEDs include red LEDs , green LED and blue LED, the reflective layer is set opposite to the light-emitting layer, the backlight gain layer is located on the side of the light-emitting layer back to the reflective layer, the backlight gain layer includes a plurality of focusing units distributed in an array, the focusing unit and the pixel unit are one by one Correspondingly, each focusing unit is set opposite to the corresponding pixel unit, so that the backlight gain layer cooperates with the reflective layer to reflect ambient light to the pixel unit in a concentrated manner, thereby improving the brightness of the display screen.

As shown in FIG. 3 , in some embodiments, each focusing unit 31 includes a plurality of tapered optical elements 32 distributed around the center of the focusing unit 31 .

The tapered optical element uses the reflection of the hypotenuse to gather the ambient light incident from the outside at one point, which can enhance the brightness of the backlight of the liquid crystal layer at this point. In this way, most of the pixels are sacrificed for ambient light absorption, and the absorbed ambient light is focused on one point for backlight enhancement, thereby improving the contrast of a single pixel of the screen, thereby increasing the brightness of the entire screen.

In some embodiments, each focusing unit 31 includes a focusing lens.

The focusing lens can also gather the light reflected by the reflective layer at one point, and enhance the backlight brightness of the liquid crystal layer at this point. In this way, most of the pixels are sacrificed for ambient light absorption, and the absorbed ambient light is focused on one point for backlight enhancement, thereby improving the contrast of a single pixel of the screen, thereby increasing the brightness of the entire screen.

In some embodiments, each focusing unit 31 includes a focusing lens and a plurality of conical optical elements arranged in sequence along a direction away from the light-emitting layer 10 , and the plurality of conical optical elements are distributed around the center of the focusing unit.

The brightness of the display can be maximized by combining the focusing lens with multiple tapered optical elements.

In some embodiments, the display screen further includes a liquid crystal layer 40, and the liquid crystal layer 40 is located on the side of the backlight gain layer 30 facing away from the light-emitting layer 10; as shown in FIG. 2 , the liquid crystal layer 40 includes a plurality of liquid crystal grains distributed in an array 41, each LED 22 is set opposite to a plurality of liquid crystal grains 41.

The liquid crystal layer can filter the light emitted by the LED through the twisting of the crystal grains, subdivide the light from a single light source into multiple light sources, and subdivide it according to the principle of pixel segmentation.

As shown in FIG. 2 , in some embodiments, liquid crystal grains 41 in two adjacent columns are arranged alternately along the column direction of the array, and liquid crystal grains 41 in two adjacent rows are alternately arranged along the row direction of the array.

The dislocation distribution of two adjacent liquid crystal crystal grains 41 is beneficial to divide the pixel units by using the liquid crystal crystal grains and improve the resolution of the display screen.

As shown in FIG. 4 , in some embodiments, the liquid crystal grains 41 in the same column belong to the same sub-pixel, and the liquid crystal grains 41 in the same row belong to different sub-pixels.

As shown in Figure 4, the sub-pixels are arranged in columns and divided into 5 columns, and each column of liquid crystal crystal grains 11 is a sub-pixel, so that a single pixel unit is divided into 5 sub-pixels that are different from each other and close to each other at the same time .

In some embodiments, the conduction timings of the liquid crystal grains 41 in two adjacent sub-pixels of the same sub-pixel are the same, and the conduction timings of the liquid crystal grains 11 in two adjacent sub-pixels are different.

As shown in FIG. 4 , sub-pixels 1 , 3 , and 5 are turned on at one moment, and sub-pixels 2 and 4 are turned on at another moment. Since the pixels to be turned on are separated by a column of liquid crystal crystal grains, a part of each column can be extracted from the three columns of pixels that are turned on to form different pixels with other columns to realize secondary division of pixels. In this way, there are several types of pixels at time 1, and several types of pixels at time 2, thereby realizing further refinement of pixels.

As shown in FIG. 5, in some embodiments, among the two liquid crystal grains 41 adjacent to the same liquid crystal grain 41, the two liquid crystal grains 41 in the same row belong to the same sub-pixel, and the two liquid crystal grains 41 in the same column Die 41 belong to the same sub-pixel. Two adjacent liquid crystal grains 41 belong to different sub-pixels.

As shown in FIG. 5 , among the liquid crystal grains numbered 1, the red, blue, and green LEDs have three liquid crystal grains respectively. In this way, the grain lattice numbered 1 can have 27 different pixel results, and the pixels with the greatest difference are the left column, the middle column and the right column, so there are three sub-pixels. Other encodings also adopt a similar idea, and

numbers

2, 3, and 4 can be divided into two sub-pixels respectively. Therefore, there are ten sub-pixels in total.

In some embodiments, the conduction times of the liquid crystal grains 41 in two adjacent sub-pixels are different.

As shown in FIG. 5 , sub-pixels 1 , 2 , 3 , and 4 are turned on at different times.

As shown in FIG. 1 , in some embodiments, the display screen further includes a light-absorbing layer 50 , the light-absorbing layer 50 is located on the side of the liquid crystal layer 40 facing away from the light-emitting layer 10 , and is at least connected to two adjacent liquid crystal crystal grains 41 . The gap is set relatively.

As shown in FIG. 6 , in some embodiments, the light absorbing layer 50 includes conical protrusions 51 disposed opposite to the gap between two adjacent liquid crystal crystal grains 41 , and the cross-sectional area of the conical protrusions 51 is along the direction away from the liquid crystal layer. The direction of 40 gradually decreases.

By setting the light-absorbing layer, the splicing gap of the LCD panel can be covered, the consistency of the display screen can be improved, the contrast of the screen can be consistent with the black backlight, and the ambient light from the outside of the screen can be absorbed.

The outer contour of the light-absorbing layer is sprayed with a raised contour at the joint position, so that the light on both sides is slightly distorted at the joint position. Since the joint is thin and the thickness of the light-absorbing layer is not high, this slight distortion The black seam will be weakened, and the edge brightness of the splicing module can be increased through the algorithm to cover up the seam.

In some embodiments, the light absorbing layer 50 includes an inkjet layer disposed in the gap between two adjacent liquid crystal crystal grains 41 .

In this embodiment, the inkjet layer is an ink that can be atomized and sprayed. It is doped with melanin. The ink is in a liquid state and will be cured after spraying, and its shape will not change easily after curing, and it can withstand a certain degree of high temperature.

In practical application, the inkjet layer is atomized and sprayed and attached to the surface of the liquid crystal layer to form a certain thickness and external contour.

Exemplarily, the inkjet layer is tapered, and the cross-sectional area of the inkjet layer decreases gradually along the direction away from the liquid crystal layer 40 .

The outer contour of the inkjet layer is sprayed with a raised outline at the joint position, so that the light on both sides is slightly distorted at the joint position. Since the joint joint is thin and the thickness of the inkjet layer is not high, so this Subtle distortion will weaken the black seam, and the edge brightness of the splicing module can be increased through the algorithm to cover up the seam.

In some embodiments, the light absorbing layer 50 includes an antireflection and antireflection film disposed on the liquid crystal layer 40 .

In this embodiment, the antireflection and antireflection coatings include antireflection coatings, also known as antireflection coatings. Its main function is to reduce or eliminate the reflected light from optical surfaces such as lenses, prisms, and flat mirrors, thereby increasing the light transmission of these components and reducing or eliminating the stray light of the system.

In some embodiments, the display screen further includes a sealing layer 60 located between the backlight gain layer 30 and the light emitting layer 10 .

By setting the sealing layer, the LED can be isolated from the outside world, and the water and oxygen in the outside world can be prevented from corroding the LED.

In some embodiments, the sealing layer includes a transparent soft glue layer.

By replacing the original vinyl layer of the light-emitting layer with a transparent soft layer, and sticking it closely behind the liquid crystal layer and the backlight gain layer, when the lamp bead fails, it can be directly removed from behind the liquid crystal layer and the backlight gain layer. The luminescent layer is removed, the adhesive layer at the fault point is washed away, and the specific maintenance work is carried out, and then the adhesive layer is refilled. The advantage of using transparent glue is that its high permeability makes the loss of light in this stroke very small, and there will be no difference in color rendering of the panel due to problems such as disassembly, maintenance, or uneven glue layer. More clearly and accurately judge the point of failure. The contrast-enhancing effect of the original black glue is replaced by the inkjet layer on the surface of the liquid crystal layer.

Using the above edge distortion method, the image generated in the black area is actually an inverted image, so the image in a certain area on the edge of the screen should also be an inverted image, that is, the left module plays the mirrored content of the right module, while the right module plays The mirror content of the left module is just the required display content after being inverted, and the distortion will cover up the inverted image content at a certain angle of view to achieve normal image playback.

Based on the same inventive concept, an embodiment of the present application provides a display device (not shown in the figure), and the display device includes the display screen provided by any one or more of the above-mentioned embodiments.

Specifically, the display device also includes a driving circuit of the display screen and the like.

Referring to FIG. 1 and FIG. 2 , the embodiment of the present application further provides a display screen, including a liquid crystal layer 40 , a light emitting layer 10 and a reflective layer 30 . The liquid crystal layer 40 includes a plurality of liquid crystal crystal grains 41 distributed in an array. The light-emitting layer 10 includes a plurality of pixel units 11 distributed in an array, and each pixel unit 11 includes three-color LEDs 12 sequentially arranged along the first direction, and the three-color LEDs 12 include red LEDs, green LEDs and blue LEDs. Each LED 12 is set opposite to a plurality of liquid crystal grains 41. The reflective layer 20 is disposed opposite to the light emitting layer 10 and is located on a side of the light emitting layer 10 facing away from the liquid crystal layer 40 .

In this embodiment, the liquid crystal layer can filter the light emitted by the LED through the twisting of the crystal grains, subdivide the light from a single light source into multiple light sources, and subdivide the light according to the principle of pixel division. The light-emitting layer can be COB, which can perform backlighting and content display at the same time.

The above-mentioned display screen includes a liquid crystal layer and a light-emitting layer, the liquid crystal layer includes a plurality of liquid crystal grains distributed in an array, the light-emitting layer includes a plurality of pixel units distributed in an array, and each pixel unit includes three-color LEDs arranged in sequence along the first direction. LEDs, three-color LEDs include red LEDs, green LEDs and blue LEDs, and each LED is set opposite to multiple liquid crystal grains. The liquid crystal grains can be used to divide the pixel unit into multiple sub-pixels, thereby improving the resolution of the display screen. Rate.

As shown in Figure 4, the sub-pixels are arranged in columns and divided into 5 columns, and each column of liquid crystal grains 41 is a sub-pixel, so that at the same time, a single pixel unit is divided into 5 sub-pixels that are different from each other and close to each other .

In some embodiments, the turn-on timing of the liquid crystal grains 41 in two adjacent sub-pixels of the same sub-pixel is the same, and the turn-on timing of the liquid crystal grains 41 in two adjacent sub-pixels is different.

As shown in FIG. 5, in some embodiments, among the two liquid crystal grains 41 adjacent to the same liquid crystal grain 41, the two liquid crystal grains 41 in the same row belong to the same sub-pixel, and the two liquid crystal grains 41 in the same column The crystal grains 41 belong to the same sub-pixel; two adjacent liquid crystal grains 41 belong to different sub-pixels.

numbers

As shown in FIG. 1 , in some embodiments, the display screen further includes a backlight gain layer 30 , and the backlight gain layer 30 is located on the side of the light emitting layer 10 facing away from the reflective layer 20 . As shown in FIG. 5 , the backlight gain layer 30 includes a plurality of focusing units 31 distributed in an array, the focusing units 31 correspond to the pixel units 11 one by one, and each focusing unit 31 is arranged opposite to the corresponding pixel unit 11 .

By setting the backlight gain layer, most of the pixels are sacrificed for ambient light absorption, and the absorbed ambient light is focused on one point for backlight enhancement, thereby improving the contrast of a single pixel of the screen, thereby increasing the brightness of the entire screen.

As shown in FIG. 5 , in some embodiments, each focusing unit 31 includes a plurality of tapered optical elements 32 distributed around the center of the focusing unit 31 .

The tapered optical element uses the reflection of the hypotenuse to gather the ambient light incident from the outside at one point, which can enhance the brightness of the backlight of the liquid crystal layer at this point.

In some embodiments, each focusing unit 31 includes a focusing lens.

In some embodiments, each focusing unit 31 includes a focusing lens and a plurality of conical optical elements arranged in sequence along a direction away from the light-emitting layer 40 , and the plurality of conical optical elements are distributed around the center of the focusing unit.

As shown in FIG. 1 , in some embodiments, the display screen further includes a light-absorbing layer 50 , the light-absorbing layer 50 is located on the side of the liquid crystal layer 40 facing away from the light-emitting layer 40 , and is at least connected to two adjacent liquid crystal crystal grains 41 . The gap is set relatively.

In some embodiments, the display screen further includes a sealing layer 60 located between the backlight gain layer 20 and the light emitting layer 40 .

In some embodiments, the sealing layer includes a transparent soft glue layer.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims

A display screen, characterized in that the display screen includes:

The light-emitting layer includes a plurality of pixel units distributed in an array, and each pixel unit includes three-color LEDs arranged in sequence along the first direction, and the three-color LEDs include red LEDs, green LEDs, and blue LEDs;

a reflective layer arranged opposite to the light-emitting layer;

The backlight gain layer is located on the side of the light-emitting layer facing away from the reflective layer; the backlight gain layer includes a plurality of focusing units distributed in an array, and the focusing units correspond to the pixel units one by one, and each of the focusing units The focusing unit is set opposite to the corresponding pixel unit.
The display screen according to claim 1, wherein each of the focusing units comprises a plurality of tapered optical elements distributed around the center of the focusing unit.
The display screen according to claim 1, wherein each of said focusing units comprises a focusing lens.
The display screen according to claim 1, wherein each of the focusing units comprises a focusing lens and a plurality of tapered optical elements arranged in sequence along a direction away from the light-emitting layer, and the plurality of tapered optical elements Distributed around the center of the focusing unit.
The display screen according to any one of claims 1 to 4, wherein the display screen further comprises:

The liquid crystal layer is located on the side of the backlight gain layer facing away from the light-emitting layer; the liquid crystal layer includes a plurality of liquid crystal grains distributed in an array, and each LED is arranged opposite to the plurality of liquid crystal grains.
The display screen according to claim 5, wherein the display screen further comprises:

The light-absorbing layer is located on the side of the liquid crystal layer facing away from the light-emitting layer, and is at least opposite to the gap between two adjacent liquid crystal crystal grains.
The display screen according to claim 6, wherein the light-absorbing layer includes conical protrusions opposite to the gap between two adjacent liquid crystal crystal grains, and the cross-sectional area of the conical protrusions is gradually decreases along the direction away from the liquid crystal layer.
The display screen according to claim 6 or 7, wherein the light-absorbing layer comprises an ink-jet layer disposed on a gap between two adjacent liquid crystal crystal grains.
The display screen according to claim 5, wherein the light absorbing layer comprises an anti-reflection and anti-reflection film disposed on the liquid crystal layer.
The display screen according to any one of claims 1 to 12, wherein the display screen further comprises:

The sealing layer is located between the backlight gain layer and the light emitting layer.
A display screen, characterized in that the display screen comprises:

a liquid crystal layer comprising a plurality of liquid crystal grains distributed in an array; and

The light-emitting layer includes a plurality of pixel units distributed in an array, and each pixel unit includes three-color LEDs arranged in sequence along the first direction, and the three-color LEDs include red LEDs, green LEDs, and blue LEDs;

Each LED is set opposite to a plurality of the liquid crystal grains;

The reflective layer is disposed opposite to the light emitting layer and located on a side of the light emitting layer facing away from the liquid crystal layer.
The display screen according to claim 11, wherein the liquid crystal grains in two adjacent columns are arranged alternately along the column direction of the array, and the liquid crystal grains in two adjacent rows are alternately arranged along the row direction of the array.
The display screen according to claim 12, wherein the liquid crystal grains in the same column belong to the same sub-pixel, and the liquid crystal grains in the same row belong to different sub-pixels.
The display screen according to claim 13, wherein the liquid crystal crystal grains in two adjacent sub-pixels adjacent to the same sub-pixel have the same conduction moment, and the liquid crystal crystal grains in two adjacent sub-pixels The conduction time of the particles is different.
The display screen according to claim 13, wherein, among the two liquid crystal grains adjacent to the same liquid crystal grain, the two liquid crystal grains in the same row belong to the same sub-pixel, and the same Two liquid crystal grains in a column belong to the same sub-pixel; two adjacent liquid crystal grains belong to different sub-pixels.
The display screen according to claim 15, wherein the conduction times of the liquid crystal grains in two adjacent sub-pixels are different.
A display device, characterized in that the display device comprises the display screen according to any one of claims 1-10.