CN111724698A - Double-sided display electronic equipment - Google Patents
Double-sided display electronic equipment Download PDFInfo
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- CN111724698A CN111724698A CN202010498910.2A CN202010498910A CN111724698A CN 111724698 A CN111724698 A CN 111724698A CN 202010498910 A CN202010498910 A CN 202010498910A CN 111724698 A CN111724698 A CN 111724698A
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- quantum dot
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- 239000002096 quantum dot Substances 0.000 claims abstract description 72
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims description 4
- YBNMDCCMCLUHBL-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 4-pyren-1-ylbutanoate Chemical compound C=1C=C(C2=C34)C=CC3=CC=CC4=CC=C2C=1CCCC(=O)ON1C(=O)CCC1=O YBNMDCCMCLUHBL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000011258 core-shell material Substances 0.000 claims description 2
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 claims description 2
- 239000010408 film Substances 0.000 description 20
- 238000009792 diffusion process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
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- 230000007547 defect Effects 0.000 description 2
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- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
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- 238000003491 array Methods 0.000 description 1
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Images
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Abstract
The invention discloses a double-sided display electronic device. The double-sided display electronic equipment comprises a first quantum dot filter film, an LED light source array and a second quantum dot filter film which are sequentially stacked from top to bottom. The upper surface and the lower surface of the LED light source array emit light, and the LED light source array comprises a mini-LED chip and/or a Micro-LED chip. The first quantum dot filter film and the second quantum dot filter film comprise filter layers and quantum dot layers located on the filter layers. The quantum dot layer is close to the light emitting surface of the LED light source array. The double-sided display electronic equipment eliminates curtain phenomenon, reduces cost, improves quality, and simultaneously realizes high dynamic contrast HDR and high color gamut.
Description
Technical Field
The invention relates to the technical field of display, in particular to a double-sided display electronic device.
Background
The existing method for mounting the double-sided display on various products is to directly attach two sets of liquid crystal display modules back to back together. This mounting will result in an increase in weight and thickness of the product, which is not entirely in line with the trend of being light, thin, short and small. In addition, with the development of the technology, another prior art is that a dual-sided lcd can share part of optical elements, but when assembling a main panel and an auxiliary panel, the main panel and the auxiliary panel are fixed at two sides of a main frame for accommodating the panels, and a backlight module is disposed between the main frame and the main panel and provides light to the auxiliary panel through a light outlet on the main frame. Another problem that arises from the fact that the main panel and the sub-panel share a light guide plate is that, because the size of the sub-panel is usually smaller than that of the main panel and the size of the light outlet on the main frame is smaller than that of the sub-panel in cooperation with that of the main panel, part of the light of the backlight module enters the sub-panel through the light outlet, and the part without the light outlet is completely reflected back to the main panel by the white main frame, so that the main panel often has a phenomenon of uneven light distribution, that is, the light of the part with the light outlet relative to the main frame is darker, forming a shadow in the shape of the light outlet, and thus causing visual differences in the light, color, and the like of the main panel.
Many methods for improving the above problems have been developed, for example, modifying the pattern of the light guide plate of the backlight module to make the light distribution uniform, but the design of the pattern at the critical position is very difficult due to the consumption of part of the light source at the back light-emitting position, and even the light distribution of the product produced by many manufacturers is not uniform after fine tuning (fine tuning), the window curtain phenomenon is still clearly visible on the main panel. Chinese patent CN1924646A realizes the homogenization of double-sided display by designing a fixed surface with a gray-scale surface, and the non-uniformity of light can be reduced by selecting a diffusion plate, but its effect is very slight, which is not enough to improve the situation; or, multi-layer film sheets such as brightness enhancement films or diffusion films are used to reduce the non-uniformity, but the thickness and cost of the double-sided LCD are greatly increased. Therefore, a display architecture that reduces the shadowing, reduces the cost and improves the quality, in particular achieving both high dynamic contrast HDR and high color gamut requires an overall design improvement of the device.
Disclosure of Invention
The invention mainly solves the technical problem of providing a double-sided display electronic device, which eliminates curtain phenomenon, reduces cost, improves quality and simultaneously realizes high dynamic contrast ratio (HDR) and high color gamut.
In order to solve the technical problem, one technical scheme adopted by the invention is to provide a double-sided display electronic device, which comprises a first quantum dot filter film, an LED light source array and a second quantum dot filter film, which are sequentially stacked from top to bottom. The upper surface and the lower surface of the LED light source array emit light and comprise a mini-LED chip and/or a Micro-LED chip. The first quantum dot filter film and the second quantum dot filter film comprise filter layers and quantum dot layers positioned on the filter layers; the quantum dot layer is close to the light emitting surface of the LED light source array.
The invention overcomes the defect that in the prior art, in order to reduce the curtain effect, multilayer films such as brightness enhancement films, diffusion films or gray scale surface plates are often used to increase the light brightness so as to reduce the non-uniformity phenomenon, but the effect is not ideal. The double-sided display structure of the invention does not need to be provided with traditional optical films such as a prism sheet, a diffusion sheet, a light guide plate and the like, thereby greatly reducing the cost and the thickness. The quantum dot light filter film can effectively improve the color gamut of the display device, simultaneously realize high dynamic contrast HDR by the mini-LED chip and/or the Micro-LED chip, and the preparation process is simple.
In a preferred embodiment, the filter layer comprises a plurality of sub-pixel regions including at least a red sub-pixel region, a green sub-pixel region, and a blue sub-pixel region. The sub-pixel region at least corresponds to an LED chip of the LED light source array.
In a preferred embodiment, the LED light source array includes two LED lamp panels stacked up and down, and light emitting surfaces of the LED lamp panels respectively correspond to the corresponding quantum dot filter coatings.
In a preferred embodiment, at least one reflector plate is disposed between the two LED lamp panels.
In a preferred embodiment, the filter layer includes a red color resistance unit, a green color resistance unit, and an organic transparent light resistance unit respectively located on the red sub-pixel region, the green sub-pixel region, and the blue sub-pixel region; the light emitted by the LED light source array is blue.
In a preferred embodiment, the quantum dots comprise at least one of binary phase quantum dots, ternary phase quantum dots, quaternary phase quantum dots, quinary phase quantum dots, core-shell structure quantum dots, and alloy structure quantum dots, wherein the binary phase quantum dots comprise at least one of CdSe, CdS, PbSe, PbS, ZnS, InP, HgS, AgS quantum dots, the ternary phase quantum dots comprise at least one of ZnXCd1-XS/ZnS, CuInS, PbSe XS1-X/PbS quantum dots, the quaternary phase quantum dots comprise at least one of CuInSeS, ZnXCd 1-xsys 1-Y, ZnXCd1-XSe/ZnS, CdSe/CdS, InP/ZnS, CuInS/ZnS quantum dots, and the quinary phase quantum dots comprise at least one of CuInSeS/esp, ZnSeS/ZnS, CuInS/ZnS quantum dots.
In a preferred embodiment, the green sub-pixel area is replaced with a yellow sub-pixel area.
In a preferred embodiment, at least one polarizer is disposed between the quantum dot filter film and the corresponding LED light source array.
Drawings
The invention and its advantages will be better understood by studying the following detailed description of specific embodiments, given by way of non-limiting example, and illustrated in the accompanying drawings, in which:
fig. 1 is an exploded view of a double-sided display electronic apparatus according to embodiment 1 of the present invention.
Fig. 2 is a cross-sectional view of a double-sided display electronic apparatus of embodiment 1 of the present invention to show the general optical principle thereof.
Fig. 3 is a structural view of an LED light source array of a double-sided display electronic apparatus according to embodiment 2 of the present invention.
Detailed Description
Referring to the drawings, wherein like reference numbers refer to like elements throughout, the principles of the present invention are illustrated in an appropriate environment. The following description is based on illustrated embodiments of the invention and should not be taken as limiting the invention with regard to other embodiments that are not detailed herein.
The word "embodiment" is used herein to mean serving as an example, instance, or illustration. In addition, the articles "a" and "an" as used in this specification and the appended claims may generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Further, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise direct contact of the first and second features through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Example 1
First, a double-sided display electronic device according to embodiment 1 of the present invention will be described with reference to fig. 1 to 2. The present embodiment provides a dual-sided display electronic device, which includes a first quantum dot filter 103, an LED light source array 102, and a second quantum dot filter 101 stacked in sequence from top to bottom. The upper surface and the lower surface of the LED light source array 102 emit light, the LED light source array comprises a mini-LED chip, and the light emitted by the LED light source is blue. As shown in fig. 2, the first quantum dot filter 103 includes a first filter layer 1033, and a first diffusion layer 1032 and a first quantum dot layer 1031 under the first filter layer 1033. The second quantum dot filter 101 includes a second filter layer 1013 and a second quantum dot layer 1011 located above the second filter layer 1013. The first quantum dot layer 1031 and the second quantum dot layer 1011 are respectively close to the light emitting surfaces on the upper and lower sides of the LED light source array 102.
The filter layer of the quantum dot filter film comprises a plurality of sub-pixel units, including an array of red sub-pixel units, an array of green sub-pixel units, and an array of blue sub-pixel units. The sub-pixel unit corresponds to a mini-LED chip of the LED light source array 102.
The filter layer of the quantum dot filter film comprises a red color resistance unit 201, a green color resistance unit 202 and an organic transparent light resistance unit 203 which are respectively positioned on the red sub-pixel unit, the green sub-pixel unit and the blue sub-pixel unit.
Light emitted from the upper surface and the lower surface of the LED light source array 102 is firstly transmitted to the quantum dot layer near the light emitting surface of the LED light source array 102, the quantum dot layer realizes light conversion to convert part of blue light into red light and green light, and meanwhile, fluorescence emission of quantum has scattering property but no orientation, so that light emitted from a surface light source of the quantum dot layer is transmitted to the filter layer. The red color resistance unit, the green color resistance unit and the organic transparent light resistance unit of the filter layer are correspondingly arranged to realize the corresponding display of the red sub-pixel unit, the green sub-pixel unit and the blue sub-pixel unit. The embodiment overcomes the defect that in the prior art, in order to reduce the curtain effect, multiple layers of films such as brightness enhancement films, diffusion films or gray scale surface plates are often used to increase the brightness of light so as to reduce the non-uniformity, but the thickness of the display is increased, and the effect is not ideal. The double-sided display structure of the invention does not need to be provided with an optical film, thereby greatly reducing the cost and the thickness. The mini-LED chip of the LED light source realizes high dynamic contrast HDR, and meanwhile, the quantum dot light filter film can effectively improve the color gamut of the display device and is simple in preparation process.
The quantum dots are quinary phase alloy quantum dots InP/ZnSeS, and are environment-friendly, environment-friendly and safe.
Example 2
Fig. 3 is a structural view of the LED light source array 102 of the dual-sided display electronic device according to embodiment 2 of the present invention. Only the differences between embodiment 2 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.
The LED light source array 102 includes two LED lamp panels 1021 and 1023 stacked up and down, and the light-emitting surface of the LED lamp panel corresponds to the corresponding quantum dot filter film respectively. A reflector 1022 is disposed between the two LED lamp panels.
Example 3
Only the differences between embodiment 3 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.
The green sub-pixel area is replaced by a yellow sub-pixel area. The green color resistance unit is replaced by a yellow color resistance unit.
Example 4
Only the differences between embodiment 4 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.
The two polaroids are respectively arranged between the two quantum dot light filtering films and the corresponding LED light source arrays. The polarizer is used to increase the brightness of the visible region of the dual-sided display electronic device.
While the invention has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the various embodiments of the present disclosure may be used in any combination, provided that there is no structural conflict, and the combination is not exhaustively described in this specification for brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. A double-sided display electronic device is characterized by comprising a first quantum dot light filter film, an LED light source array and a second quantum dot light filter film which are sequentially stacked from top to bottom;
the upper surface and the lower surface of the LED light source array emit light, and the LED light source array comprises a mini-LED chip and/or a Micro-LED chip;
the first quantum dot filter film and the second quantum dot filter film comprise filter layers and quantum dot layers positioned on the filter layers;
the quantum dot layer is close to the light emitting surface of the LED light source array.
2. The dual-sided display electronic device of claim 1, wherein the filter layer comprises a plurality of sub-pixel regions including at least a red sub-pixel region, a green sub-pixel region, and a blue sub-pixel region;
the sub-pixel region at least corresponds to an LED chip of the LED light source array.
3. The dual-sided display electronic device of claim 2, wherein the LED light source array comprises two LED lamp panels stacked up and down, and light emitting surfaces of the LED lamp panels respectively correspond to the corresponding quantum dot filter films.
4. A dual-sided display electronic device as recited in claim 3 wherein at least one reflector sheet is disposed between the two LED lamp panels.
5. The dual-sided display electronic device of any of claims 1-4, wherein the filter layer comprises a red color resist unit, a green color resist unit, and an organic transparent resist unit respectively disposed on the red sub-pixel area, the green sub-pixel area, and the blue sub-pixel area; the light emitted by the LED light source array is blue.
6. The dual-sided display electronic device according to claim 1, wherein the quantum dots include at least one of binary phase quantum dots, ternary phase quantum dots, quaternary phase quantum dots, quinary phase quantum dots, core-shell structure quantum dots, and alloy structure quantum dots, the binary phase quantum dots comprise at least one quantum dot of CdSe, CdS, PbSe, PbS, ZnS, InP, HgS and AgS quantum dots, the ternary phase quantum dots comprise at least one quantum dot of ZnXCd1-XS/ZnS, CuInS and PbSeXS1-X/PbS quantum dots, the quaternary phase quantum dots comprise at least one quantum dot of CuInSeS, ZnXCd1-XSeYS1-Y, ZnXCd1-XSe/ZnS, CdSe/CdS, InP/ZnS and CuInS/ZnS quantum dots, and the quinary phase quantum dots comprise at least one quantum dot of InP/ZnSeS, InP/ZnSeS/ZnS and CuInS/ZnSeS quantum dots.
7. The dual-sided display electronic device of claim 2, wherein the green sub-pixel region is replaced with a yellow sub-pixel region.
8. The dual-sided display electronic device of claim 1, wherein at least one polarizer is disposed between the quantum dot filter and the corresponding LED light source array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010498910.2A CN111724698A (en) | 2020-06-04 | 2020-06-04 | Double-sided display electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010498910.2A CN111724698A (en) | 2020-06-04 | 2020-06-04 | Double-sided display electronic equipment |
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| CN111724698A true CN111724698A (en) | 2020-09-29 |
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| CN202010498910.2A Pending CN111724698A (en) | 2020-06-04 | 2020-06-04 | Double-sided display electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526786A (en) * | 2020-11-27 | 2021-03-19 | 北海惠科光电技术有限公司 | Color film substrate, display panel and display device |
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Application publication date: 20200929 |