CN115513259A - Display panel and display terminal - Google Patents

Display panel and display terminal Download PDF

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Publication number
CN115513259A
CN115513259A CN202210983028.6A CN202210983028A CN115513259A CN 115513259 A CN115513259 A CN 115513259A CN 202210983028 A CN202210983028 A CN 202210983028A CN 115513259 A CN115513259 A CN 115513259A
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light
display panel
photosensitive layer
quantum dot
light emitting
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Chinese (zh)
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邓红照
刘净
陈昊
陈林楠
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TCL Huaxing Photoelectric Technology Co Ltd
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TCL Huaxing Photoelectric Technology Co Ltd
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Priority to CN202210983028.6A priority Critical patent/CN115513259A/en
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133614Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/15Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
    • H01L27/153Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
    • H01L27/156Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50Wavelength conversion elements
    • H01L33/501Wavelength conversion elements characterised by the materials, e.g. binder
    • H01L33/502Wavelength conversion materials

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Nonlinear Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Manufacturing & Machinery (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application relates to a display panel and display terminal, wherein display panel includes: a back plate; the light-emitting layer comprises a plurality of pixel units arranged in an array, and is positioned on the backboard; a photosensitive layer on the light emitting layer, wherein: the photosensitive layer comprises a plurality of macromolecular chains, and the macromolecular chains are mutually crosslinked under the condition that the corresponding pixel units do not emit light to form a three-dimensional net structure; and the plurality of polymer chains are subjected to crosslinking release under the condition that the corresponding pixel units emit light, so that a linear chain structure is formed. This application can reduce display panel's luminance loss, improves display panel's contrast, and is simple high-efficient through setting up the photosensitive layer on display panel's luminescent layer.

Description

Display panel and display terminal
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display terminal.
Background
Micro-Light Emitting Diode (Micro-LED) display technology and Organic Light Emitting Diode (OLED) display technology are one of the hot spots in future display technologies. Compared with the existing Liquid Crystal Display (LCD) device, the Micro-LED Display device and the OLED Display device have the advantages of fast response, high color gamut, high PPI, low energy consumption and the like, but have the defects of more technical difficulties and complex technology. For example, the OLED display technology has the problems of low efficiency and short lifetime of red and green OLED materials, and the Micro-LED display technology also has the problems of low yield and low light emitting efficiency of red and green LEDs. For this reason, the use of color conversion display technology is becoming more common.
The color conversion display technology generally refers to a display technology for realizing three primary colors of red, green and blue (RGB) by using a monochromatic light source and matching with the color conversion capability of Quantum Dots (QD). Since the wavelength of blue is shortest and the energy is highest, the other two colors can be excited, and the excitation efficiency is highest, the color conversion display technology generally takes blue as a reference light source.
However, in the related art, the color conversion display technology is generally a pure black resin material, thereby causing a loss of brightness. Therefore, how to improve the contrast of the display panel without losing the brightness of the light emitting area is becoming a technical problem.
Disclosure of Invention
In view of the above, the present application provides a display panel and a display terminal, which can switch the structural state of the photosensitive layer according to the light emitted by the plurality of pixel units, and cross-link with each other under the condition that the corresponding pixel units do not emit light to form a three-dimensional network structure; the photosensitive layer corresponding to the display area with the light source in the display panel is changed into a transparent high-light-transmittance state, so that the brightness loss of the display panel is reduced; and the photosensitive layer corresponding to the display area without the light source in the display panel is in a black and light-tight state, so that the black part is darker, the bright part is brighter, the contrast of the display panel is improved, and the display panel is simple and efficient.
According to an aspect of the present application, there is provided a display panel including: a back plate; the light-emitting layer comprises a plurality of pixel units which are arranged in an array mode, and is positioned on the back plate; a photosensitive layer on the light emitting layer, wherein: the photosensitive layer comprises a plurality of macromolecular chains, and the macromolecular chains are mutually crosslinked under the condition that the corresponding pixel units do not emit light to form a three-dimensional net structure; and the plurality of macromolecular chains are subjected to de-crosslinking under the condition that the corresponding pixel units emit light, so that a linear chain structure is formed.
Further, the photosensitive layer includes a resin material in which the plurality of polymer chains are located, wherein: the macromolecules in the plurality of macromolecular chains comprise at least one of diazo groups, diazoquinone groups and azido groups.
Further, each of the pixel units includes at least one light emitting component for emitting blue light.
Furthermore, the display panel further comprises a driving circuit layer, the driving circuit layer is located on the back plate, and the light emitting layer is located on the driving circuit layer.
Further, a non-light-emitting region is disposed between each pixel unit, a light-shielding material is disposed in the non-light-emitting region, and the light-shielding material is located on the driving circuit layer, wherein: the height of the light shielding material is the same as the height of the pixel unit adjacent to the light shielding material.
Further, the light emitting component includes a non-light emitting side and a light emitting side facing away from the driving circuit layer, wherein: the light emitting component is provided with a light blocking package, and the light blocking package wraps the non-light emitting side of the light emitting component.
Further, in a case where the plurality of pixel units emit light, the photosensitive layer includes a plurality of crosslinking regions maintaining a three-dimensional network structure and a plurality of de-crosslinking regions maintaining a linear chain structure, the plurality of de-crosslinking regions corresponding to the respective pixel units, respectively.
Further, the display panel still includes quantum dot matrix layer, the quantum dot matrix layer set up with on the photosensitive layer, wherein: the quantum dot matrix layer comprises a red quantum dot matrix and a green quantum dot matrix, the red quantum dot matrix comprises a plurality of red quantum dots arranged in an array, and the green quantum dot matrix comprises a plurality of green quantum dots arranged in an array.
Further, the quantum dot matrix layer further comprises a blue quantum dot matrix, and the blue quantum dot matrix comprises a plurality of blue quantum dots arranged in an array.
According to another aspect of the present application, there is provided a display terminal including a terminal body and the display panel, the terminal body being connected with the display panel.
By arranging the photosensitive layer on the luminous layer of the display panel, the structural state of the photosensitive layer can be switched according to the light emitted by the pixel units according to the aspects of the application, and the photosensitive layer is mutually crosslinked under the condition that the corresponding pixel units do not emit light, so that a three-dimensional net structure is formed; the photosensitive layer corresponding to the display area with the light source in the display panel is changed into a transparent high-light-transmittance state, so that the brightness loss of the display panel is reduced; and the photosensitive layer corresponding to the display area without the light source in the display panel is in a black opaque state, so that the black part is darker, and the bright part is brighter, thereby improving the contrast of the display panel, and being simple and efficient.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 shows a schematic cross-linked structure of a display panel according to an embodiment of the present application.
Fig. 2 shows a schematic view of a crosslinked photosensitive layer of an embodiment of the present application.
Fig. 3 shows a schematic diagram of an uncrosslinked structure of a display panel according to an embodiment of the present application.
Fig. 4 shows a schematic view of an uncrosslinked photosensitive layer of an embodiment of the present application.
FIG. 5 shows a schematic structural diagram of a QD-Micro LED display panel according to an embodiment of the present application.
Fig. 6 shows a schematic structural diagram of a QD-OLED display panel according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a QDCF-LCD display panel according to an embodiment of the present application.
Fig. 8 shows a schematic view of a light screening material of an embodiment of the present application.
Fig. 9 shows a schematic view of a light barrier package of an embodiment of the present application.
Detailed Description
The present application mainly provides a display panel, the display panel includes: a back plate; the light-emitting layer comprises a plurality of pixel units which are arranged in an array mode, and is positioned on the back plate; a photosensitive layer on the light emitting layer, wherein: the photosensitive layer comprises a plurality of macromolecular chains, and the macromolecular chains are mutually crosslinked under the condition that the corresponding pixel units do not emit light to form a three-dimensional net structure; and the plurality of polymer chains are subjected to crosslinking release under the condition that the corresponding pixel units emit light, so that a linear chain structure is formed.
By arranging the photosensitive layer on the luminous layer of the display panel, the structural state of the photosensitive layer can be switched according to the light emitted by the pixel units, namely, the pixel units are mutually crosslinked under the condition that the corresponding pixel units do not emit light, so that a three-dimensional net structure is formed; the photosensitive layer corresponding to the display area with the light source in the display panel is changed into a transparent high-light-transmittance state, so that the brightness loss of the display panel is reduced; the photosensitive layer corresponding to the display area without the light source in the display panel is in a black opaque state, so that the black part is darker, and the bright part is brighter, thereby improving the contrast of the display panel.
Fig. 1 shows a schematic cross-linked structure of a display panel according to an embodiment of the present application.
As shown in fig. 1, a driving circuit (i.e., array) layer 12 may be disposed on a back plate 11 of the display panel, and a plurality of pixel units arranged in an Array are disposed on the driving circuit layer 12. The driving circuit layer 12 may be provided with metal traces, so that the backplane 11 is electrically connected to each of the pixel units, and further drives each of the pixel units to operate. The back plate may be a glass substrate, a PCB substrate, a BT resin substrate, an aluminum substrate, or the like. The driving circuit may be driven by AM TFT, AM Micro IC, or PM, and the specific driving method is not limited in the present application.
The light-emitting layer may include a plurality of pixel units arranged in an array, and the light-emitting layer is located on the backplane. Each of the pixel units may include at least one light emitting part, respectively. The area where each pixel unit is located may be referred to as a light emitting area. Each pixel unit comprises at least one light-emitting component which is used for emitting blue light. The light emitting component may be an LED, or may be other devices such as a chip. The light emitting component can be attached by adopting a mode of chip mounting, die bonding, crystal puncturing and the like. For example, in fig. 1, the pixel unit 14 may include a first light emitting part 141, a second light emitting part 142, and a third light emitting part 143. The light emitting parts may be blue LEDs each for emitting blue light. The distance between the light emitting parts may be set as desired, and the present application is not limited thereto.
Referring to fig. 1, a plurality of non-light emitting regions may be disposed at intervals on both sides of each of the pixel units. A black light-shielding material, such as black ink, may be filled in each of the non-light-emitting regions. The thickness of the black light-shielding material filled in each of the non-light-emitting regions may be the same. The black light-shielding material filled in each of the non-light-emitting regions may form the light-shielding layer 13.
Further, as shown in fig. 1, each pixel unit may be covered with a photosensitive layer 15, and the photosensitive layer 15 is located on the light emitting layer. The photosensitive layer may have a three-dimensional network structure in a cross-linked state. The photosensitive layer 15 may include a plurality of mutually cross-linked polymer chains, and the polymer chains may sense external light and generate a chemical reaction under the action of the external light, so that the originally cross-linked polymer chains are dissociated to form a photosensitive layer in a de-cross-linked form. Namely, the plurality of polymer chains are mutually crosslinked under the condition that the corresponding pixel units do not emit light, so that a three-dimensional net structure is formed; and the plurality of polymer chains are subjected to crosslinking release under the condition that the corresponding pixel units emit light, so that a linear chain structure is formed.
Fig. 2 shows a schematic view of a crosslinked photosensitive layer of an embodiment of the present application.
Referring to fig. 2, the photosensitive layer may employ a resin film layer, and the resin film layer may include a plurality of polymer chains. The photosensitive layer may be made of epoxy resin or other transparent resin. In the photosensitive layer 15 in a cross-linked state, a stable three-dimensional network structure may be formed between the first polymer 151 and the second polymer 152 by means of an action force such as a hydrogen bond, van der waals force, or the like. The polymer chains in the photosensitive layer 15 may extend in a first direction (i.e., a transverse direction) or in a second direction (i.e., a longitudinal direction), and the polymer chains extending in the first direction and the polymer chains extending in the second direction may be perpendicularly crossed.
Wherein the photosensitive layer includes a resin material in which the plurality of polymer chains are located, wherein: the macromolecules in the plurality of macromolecular chains comprise at least one of diazo groups, diazoquinone groups and azido groups. That is, the polymer of the photosensitive layer may contain a functional group such as a diazo group, a diazoquinone group, or an azido group, and the photosensitive layer may use a nitrogen-containing resin material, for example, a diazo-modified Polystyrene (PS) material. It is to be understood that the photosensitive layer may employ other types of functional groups besides the diazo group, diazoquinone group or azido group, as long as it exhibits such a property as to undergo photocrosslinking, and the present application is not limited to a specific material of the photosensitive layer.
Further, in the case where the plurality of pixel units emit light, the photosensitive layer includes a plurality of crosslinking regions maintaining a three-dimensional network structure and a plurality of de-crosslinking regions maintaining a linear chain structure, the plurality of de-crosslinking regions corresponding to the respective pixel units, respectively.
Fig. 3 shows a schematic view of a de-crosslinking structure of a display panel according to an embodiment of the present application.
As shown in fig. 3, the uncrosslinked region 31 and the crosslinked region 32 may be adjacent to each other. The plurality of uncrosslinked regions and the plurality of crosslinked regions may be staggered with respect to each other. The emergent ray 211 of the first light emitting component 141 may pass through the uncrosslinked region 31 and be captured by human eyes, thereby forming a display. For example, the uncrosslinked region may be located right above the corresponding pixel unit, i.e., corresponding to the pixel unit in a direction perpendicular to the light emitting layer. It is understood that the size of the de-crosslinking area depends on the light path emitted by the corresponding pixel unit, and the application is not limited to the corresponding relationship between the de-crosslinking area and the pixel unit.
Fig. 4 shows a schematic view of uncrosslinking the photosensitive layer in an embodiment of the present application.
For example, referring to fig. 4, the first polymer chain 41 and the second polymer chain 42 of the photosensitive layer obtain energy under the action of blue light emitted by the corresponding blue LED, the cross-linked functional group starts to be de-cross-linked, and both the first polymer chain 41 and the second polymer chain 42 become a linear molecular chain state. Gaps exist among different linear molecular chains after the uncrosslinking, so that the light can transmit, and the photosensitive layer which is uncrosslinked macroscopically shows a transparent state and has high light transmittance.
Because the photosensitive layer is introduced to replace a pure black material in the related technology, under the condition of no light, a high molecular chain of the photosensitive layer is in a compact crosslinking state, and the photosensitive layer is in a black state and cannot transmit light; under the condition of visible light, the macromolecular chains of the photosensitive layer are subjected to decrosslinking and become linear macromolecular chains, and the photosensitive layer is in a transparent state and has high light transmittance. Therefore, by virtue of the photosensitive property of the photosensitive layer, the photosensitive layer corresponding to the display area of the display panel with the light source is changed into a transparent high-transmittance state, so that the brightness loss of the display panel is reduced; the photosensitive layer corresponding to the display area without the light source in the display panel is in a black and light-tight state, so that the black part is darker, and the bright part is brighter, thereby improving the contrast of the display panel.
In practical applications, the display panel may be a backlight product or a direct display product. The photosensitive layer can be applied to display panels of Micro-LED, OLED, LCD and the like, and three types of display panels of QD-Micro LED, QD-OLED and QDCF-LCD are formed on the basis of Quantum Dot (QD) technology. Of course, other types of display panels may also be formed based on the inventive concept of the present application. The following description will be given by taking the above three types of display panels as examples.
FIG. 5 shows a schematic structural diagram of a QD-Micro LED display panel according to an embodiment of the present application.
As shown in fig. 5, the display panel may further include a first quantum dot matrix layer 51 disposed on the photosensitive layer 15. The first quantum dot matrix layer 51 may be in a transparent substrate. In fig. 5, the quantum dot matrix layer includes a red quantum dot matrix and a green quantum dot matrix. Illustratively, the red quantum dot matrix includes a plurality of red quantum dots 511 arranged in an array, and the green quantum dot matrix includes a plurality of green quantum dots 512 arranged in an array. The red quantum dots 511 and the green quantum dots 512 adjacent to each other may constitute one quantum dot unit corresponding to the pixel unit 14.
Therein, the red quantum dots 511 may correspond to the first blue LED541, and the green quantum dots 512 may correspond to the second blue LED 542. Since the substrate is transparent, blue light emitted from the third blue LED543 directly passes through the region corresponding to the first quantum dot matrix layer 51.
It should be noted that the wavelength threshold of the photosensitive decrosslinking film adopted in the present application may be between 470nm (nanometers) and 740 nm. For example, the wavelength threshold may be 470nm, 520nm, 740nm, and so on. Under the condition that the wavelength of light irradiated to the photosensitive decrosslinked film layer is smaller than the wavelength threshold value of decrosslinking, decrosslinking of the photosensitive decrosslinked film layer can occur; and under the condition that the wavelength of the light irradiated on the photosensitive uncrosslinked film layer is greater than or equal to the wavelength threshold of the uncrosslinking, the photosensitive uncrosslinked film layer still maintains the crosslinked state. Because the wavelength range of blue light lies in between 465nm-470nm, therefore this application chooses the blue light right sensitization to separate the crosslinking membranous layer, can reach the effect of good solution crosslinking.
In practical application, the blue light Micro LED is combined with the quantum dot matrix layer to realize the display of full-color pictures. Meanwhile, the blue light Micro LED has mature preparation process and relatively low cost.
Fig. 6 shows a schematic structural diagram of a QD-OLED display panel according to an embodiment of the present application.
As shown in fig. 6, unlike fig. 5, the blue LEDs in fig. 5 are each replaced with blue OLED light emitting devices, i.e., a first blue OLED light emitting device 621, a second blue OLED light emitting device 622, and a third blue OLED light emitting device 623. The first blue OLED light emitting device 621, the second blue OLED light emitting device 622, and the third blue OLED light emitting device 623 may be located in the same pixel unit 62.
In fig. 6, the display panel may further include a second quantum dot matrix layer 61 disposed on the photosensitive layer 15. The second quantum dot matrix layer 61 may be in a transparent substrate. In fig. 6, the quantum dot matrix layer includes a red quantum dot matrix and a green quantum dot matrix. Illustratively, the red quantum dot matrix includes a plurality of red quantum dots 611 arranged in an array, and the green quantum dot matrix includes a plurality of green quantum dots 612 arranged in an array. The red quantum dots 611 and the green quantum dots 612 adjacent to each other may constitute a quantum dot unit corresponding to the pixel unit 62.
Fig. 7 is a schematic structural diagram of a QDCF-LCD display panel according to an embodiment of the present application.
As shown in fig. 7, like fig. 5, the pixel unit 72 in fig. 7 may include a fourth blue LED721, a fifth blue LED722, and a sixth blue LED723. In contrast, the display panel may further include a third quantum dot matrix layer 71 disposed on the photosensitive layer 15. The third quantum dot matrix layer 71 may be located in a transparent substrate.
In fig. 7, the quantum dot matrix layer may further include a blue quantum dot matrix including a plurality of blue quantum dots arranged in an array, in addition to the red quantum dot matrix and the green quantum dot matrix. Illustratively, the red quantum dot matrix includes a plurality of red quantum dots 711 (i.e., R-QDCF) arranged in an array, the green quantum dot matrix includes a plurality of green quantum dots 712 (i.e., G-QDCF) arranged in an array, and the blue quantum dot matrix includes a plurality of blue quantum dots 713 (i.e., B-CF) arranged in an array. The red, green and blue quantum dots 711, 712 and 713, which are adjacent to each other, may constitute one quantum dot unit, corresponding to the pixel unit 72.
The quantum dot matrix layer in fig. 7 may be provided in a color set (i.e., CF) layer of the liquid crystal display panel. The types of red quantum dots and green quantum dots are different from the types of blue quantum dots. When the pixel unit 72 emits light, the blue light can directly pass through the blue quantum dots to be emitted, and the light emitting path of the blue light is not affected.
Further, a non-light-emitting region is disposed between each of the pixel units, a light-shielding material is disposed in the non-light-emitting region, and the light-shielding material is located on the driving circuit layer, wherein: the height of the light shielding material is the same as the height of the pixel unit adjacent to the light shielding material.
Fig. 8 shows a schematic view of a light screening material of an embodiment of the present application.
As shown in fig. 8, for example, compared to fig. 5, the embodiment of the present application may increase the height of the light shielding material 81 in the non-light emitting region, so that the height of the light shielding material is the same as the height of the pixel unit adjacent to the light shielding material, that is, the top of the light shielding material 81 is flush with the top of the adjacent pixel unit. For example, in fig. 8, the seventh blue LED841, the eighth blue LED842, and the ninth blue LED843 are all the same in height and flush with the adjacent light blocking material 81 in height. Therefore, light emitted from the side surface of the light emitting component in the adjacent pixel unit can be shielded, the light emitting component becomes a single-surface light emitting source, the influence of light diffraction emitted by the light emitting component is reduced, the dark part is darker, and the contrast is further increased.
Further, the light emitting component includes a non-light emitting side and a light emitting side facing away from the driving circuit layer, wherein: the light emitting component is provided with a light blocking package, and the light blocking package wraps the non-light emitting side of the light emitting component.
Fig. 9 shows a schematic view of a light barrier package of an embodiment of the present application.
As shown in fig. 9, compared to fig. 5, for example, in the embodiment of the present application, the light-emitting component may also be packaged without using a light-shielding material, and instead of using a Die (Die), a Packaging (PKG) process, that is, the light-blocking package 91 in fig. 9, may be used. For example, in fig. 9, left and right sides and a lower side of a tenth blue LED941, left and right sides and a lower side of an eleventh blue LED942, and left and right sides and a lower side of a twelfth blue LED943 may be coated with light blocking packages. Light blocking package 91 wraps light emitting component from the left and right sides (can also include the bottom side) of light emitting component to shelter from the light that light emitting component sent from the side, make light emitting component become single face luminescent light source, thereby reduce the influence of the light diffraction that light emitting component sent, make the dark place darker, further increase the contrast.
Because the light that the luminous component of this application sent probably can be diffracted, the area that leads to originally not shining the light (for example between two adjacent quantum dot units) also receives the illumination of light and takes place the cross-linking, does not play the darker effect in dark place, consequently adopts the scheme of fig. 8 or fig. 9, can shelter from the light that the luminous component sent from the side, makes luminous component become single face luminous light source, thereby reduces the influence of the light diffraction that luminous component sent, makes dark place darker, further increases the contrast. In the present application, the schemes of fig. 8 and 9 may be adopted at the same time.
In any of fig. 5, 6, and 7, the light-shielding material may not be used. That is, the photosensitive crosslinked photosensitive layer of the present application can also be used alone to replace the black glue and the whole surface sealing glue processes in the related art. After shutdown, the crosslinking and non-crosslinking conditions of the whole photosensitive layer are kept, and the resin in the area with the light is not crosslinked and shows light transmission; the resin in the area where no light is present appears in a cross-linked state and appears opaque, thereby achieving high contrast.
In practical application, the method can utilize diazo resin materials as raw materials, combines the processes of mould pressing, extrusion and the like to prepare the photosensitive layer, then cuts the photosensitive layer into photosensitive layers with target size, coats glue on the back of the cut photosensitive layer, and sticks a release film on the glue to obtain an independent product. When the adhesive is used, the release film can be torn off and is adhered to a target substrate of the display panel.
The combination mode of the photosensitive layer and the luminous layer of the lamp panel can be mould pressing, and can also be cross-linking and key bonding. The photosensitive layer can be attached manually or mechanically. It is understood that there are various ways to prepare the photosensitive layer, and the application is not limited to the preparation process of the photosensitive layer.
In addition, this application still provides a display terminal, display terminal includes the terminal main part and display panel, the terminal main part with display panel is connected. The display terminal may include an in-vehicle device, a mobile phone, a notebook, a tablet, a commercial device, a wearable device display device, a portable display device, and the like.
In summary, compared with the pure black resin material with the brightness loss of 40% in the related art, the photosensitive layer is adopted in the application, and the pixel-level brightness and contrast control can be realized by performing pixel-level 'transparent-opaque' state control on a single pixel, so that the brightness loss is reduced; meanwhile, the surface of the photosensitive layer is smooth, the smoothness problem does not exist, and the ink color consistency problem does not exist. Because the resin of the area where the pixel emits light is transparent, and the resin of the area where no pixel emits light is opaque, the pixel-level contrast is obviously improved. In addition, the resin film is simple in preparation process and easy to produce in mass, and the preparation efficiency of the display panel is improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The display panel and the display terminal provided in the embodiments of the present application are described in detail above, and specific examples are applied in this text to explain the principles and embodiments of the present application, and the description of the embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (10)

1. A display panel, comprising:
a back plate;
the light-emitting layer comprises a plurality of pixel units which are arranged in an array mode, and is positioned on the back plate;
a photosensitive layer on the light emitting layer, wherein: the photosensitive layer comprises a plurality of macromolecular chains, and the macromolecular chains are mutually crosslinked under the condition that the corresponding pixel units do not emit light to form a three-dimensional net structure; and the plurality of polymer chains are subjected to crosslinking release under the condition that the corresponding pixel units emit light, so that a linear chain structure is formed.
2. The display panel according to claim 1, wherein the photosensitive layer comprises a resin material in which the plurality of polymer chains are located, wherein: the macromolecules in the plurality of macromolecular chains comprise at least one of diazo groups, diazoquinone groups and azido groups.
3. The display panel according to claim 1, wherein each of the pixel units includes at least one light emitting component for emitting blue light, respectively.
4. The display panel of claim 1, further comprising a driving circuit layer on the backplane, wherein the light-emitting layer is on the driving circuit layer.
5. The display panel according to claim 4, wherein a non-light-emitting region is provided between the pixel units, and a light-shielding material is provided in the non-light-emitting region and located on the driving circuit layer, wherein: the height of the light shielding material is the same as the height of the pixel unit adjacent to the light shielding material.
6. The display panel of claim 4, wherein the light emitting component comprises a non-light emitting side and a light emitting side facing away from the driving circuit layer, wherein: the light emitting component is provided with a light blocking package, and the light blocking package wraps the non-light emitting side of the light emitting component.
7. The display panel according to claim 1, wherein the photosensitive layer comprises a plurality of cross-linking regions and a plurality of de-cross-linking regions, the plurality of cross-linking regions maintain a three-dimensional network structure, the plurality of de-cross-linking regions maintain a linear chain structure, and the plurality of de-cross-linking regions correspond to the pixel units respectively.
8. The display panel of claim 1, further comprising a quantum dot matrix layer disposed on the photosensitive layer, wherein: the quantum dot matrix layer comprises a red quantum dot matrix and a green quantum dot matrix, the red quantum dot matrix comprises a plurality of red quantum dots arranged in an array, and the green quantum dot matrix comprises a plurality of green quantum dots arranged in an array.
9. The display panel of claim 8, wherein the quantum dot matrix layer further comprises a blue quantum dot matrix comprising a plurality of blue quantum dots arranged in an array.
10. A display terminal, characterized in that the display terminal comprises a terminal body and a display panel according to any one of claims 1-9, the terminal body being connected to the display panel.
CN202210983028.6A 2022-08-16 2022-08-16 Display panel and display terminal Pending CN115513259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210983028.6A CN115513259A (en) 2022-08-16 2022-08-16 Display panel and display terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210983028.6A CN115513259A (en) 2022-08-16 2022-08-16 Display panel and display terminal

Publications (1)

Publication Number Publication Date
CN115513259A true CN115513259A (en) 2022-12-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210983028.6A Pending CN115513259A (en) 2022-08-16 2022-08-16 Display panel and display terminal

Country Status (1)

Country Link
CN (1) CN115513259A (en)

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