Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises a first substrate, a second substrate, a display area located between the first substrate and the second substrate and a backlight module located on the side, away from the first substrate, of the second substrate, the display area comprises a liquid crystal layer, and the backlight module comprises a light source layer. The light source layer comprises a plurality of micro light-emitting diode lamp beads which are arranged in multiple rows and multiple columns at intervals and autonomous light-emitting pixel layers which are arranged between every two adjacent micro light-emitting diode lamp beads in a clamped mode, and the autonomous light-emitting pixel layers are of a single-layer structure. Each autonomous light-emitting pixel layer is configured to respectively display one of red, green and blue under the common excitation of outdoor light energy and / or heat energy generated by light emitting and heating of each micro light-emitting diode lamp bead; new pixel units are formed between one or two or three independent light-emitting pixel layers and the sub-pixels where the adjacent micro light-emitting diode lamp beads are located; and the new pixel unit and the original pixel unit are overlapped or overlapped.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Displays, as display devices, generally include LCD displays, OLED displays, QLED displays and micro-light emitting diode displays, etc. The factors used to determine the quality of displays generally include resolution, PPI, etc. Among them, micro-light emitting diodes, as the next generation of backlight technology, are being widely used and explored in the industry. It should be pointed out that micro-light emitting diode backlight is an important innovation direction of the liquid crystal display technology path.

[0003] In the field of micro-LED backlight, unlike traditional backlight products, the light emission of micro-LEDs is based on semiconductor PN junctions. When a forward voltage is applied, electrons and holes recombine in the active area to emit light. However, in reality, not all electrons and holes can effectively recombine to emit light. Some electrons will interact with crystal defects and convert energy into heat energy in the form of non-radiative recombination. Among them, micro-LEDs use a large number of chips densely arranged to achieve high resolution and high brightness. Such a layout generates more heat per unit area, and due to limited heat dissipation space, heat is easy to accumulate. Although the light guide plate can evenly distribute the light, it will absorb and scatter part of the light. The absorbed light energy will eventually be converted into heat energy, causing a large part of the energy generated by the micro-LED to be lost in the form of heat energy. Summary of the invention

[0004] The present application provides a display panel and a display device to solve the technical problem in the above-mentioned prior art that a large part of the energy of micro light emitting diodes is converted into heat energy, resulting in serious energy loss.

[0005] The display panel provided by the present invention includes: a first substrate, a second substrate, and a display area and a backlight module located between the first substrate and the second substrate, wherein the display area includes a liquid crystal layer; the backlight module includes a light source layer, the light source layer includes a plurality of micro-light emitting diode lamp beads arranged in multiple rows and columns and an autonomous light-emitting pixel layer sandwiched between each adjacent two of the micro-light emitting diode lamp beads, the autonomous light-emitting pixel layer is constructed as a thermoluminescent structure and / or a photoluminescent structure, and the autonomous light-emitting pixel layer is configured to display one of red, green, and blue colors under the combined excitation of outdoor light energy and / or heat energy generated by the light emission and heating of each of the micro-light emitting diode lamp beads; a new pixel unit is formed between each of the autonomous light-emitting pixel layers and the sub-pixel where the adjacent micro-light emitting diode lamp beads are located; the new pixel unit is overlapped or overlapped with the original pixel unit.

[0006] Wherein, the display panel further includes a light-transmitting component, the light-transmitting component includes a structured incident lens, a one-way high-transmittance film group and an upper polarizer, the upper polarizer is covered on the side of the first substrate away from the second substrate, the one-way high-transmittance film group is covered on the side of the upper polarizer away from the first substrate, the one-way high-transmittance film group includes a first one-way high-transmittance film and a plurality of second one-way high-transmittance films arrayed and embedded in the first one-way high-transmittance film; a plurality of structured incident lenses are provided, each of the structured incident lenses is covered on the side of the one-way high-transmittance film group away from the upper polarizer, and each of the structured incident lenses is arranged at intervals, each of the structured incident lenses is respectively arranged opposite to one of the autonomous light-emitting pixel layers, every two of the second one-way high-transmittance films and the first one-way high-transmittance films sandwiched therebetween are correspondingly arranged between each of the structured incident lenses and each of the autonomous light-emitting pixel layers, and the first one-way high-transmittance film is used to block ambient light from being transmitted to the liquid crystal layer;

[0007] The ambient light sequentially passes through each of the structural incident lenses, each of the second one-way high-transmittance films, the liquid crystal layer and is transmitted to each of the autonomous light-emitting pixel layers, so as to enable each of the autonomous light-emitting pixel layers to display one of the colors of red, green and blue respectively under the stimulation of the outdoor light energy of the ambient light.

[0008] Among them, the structural incident lens includes a plane area and a bevel area located on both sides of the plane area, and the bevel area on each side is arranged opposite to one of the second one-way high-transmittance films, so as to allow the ambient light to be transmitted to each of the autonomous light-emitting pixel layers through the bevel area, the second one-way high-transmittance film, and the liquid crystal layer in sequence.

[0009] Wherein, the backlight module further comprises a backlight substrate and a first transparent resin layer and a second transparent resin layer stacked on a side of the backlight substrate facing the second substrate;

[0010] Each of the micro-LED lamp beads is mounted on the backlight substrate and embedded between the first transparent resin layer and the second transparent resin layer, and each of the autonomous light-emitting pixel layers is embedded in the second transparent resin layer. The heat energy generated by each of the micro-LED lamp beads is transferred to each of the autonomous light-emitting pixel layers through the first transparent resin layer and / or the second transparent resin layer.

[0011] At least a portion of the structure of the self-luminous pixel layer is in contact with the first transparent resin layer.

[0012] Wherein, the display area further includes a lower polarizer, and the lower polarizer is covered on a side of the second substrate away from the first substrate, and the backlight module further includes a first film and a second film, and the first film is covered on a side of the lower polarizer away from the second substrate, and the second film is covered on a side of the first film away from the lower polarizer;

[0013] The first film sheet includes a plurality of prism brightness enhancement areas arranged in an array and spaced apart from each other, and the second film sheet includes a plurality of diffusion areas arranged in an array and spaced apart from each other;

[0014] Each of the prism brightening areas and each of the diffusion areas are respectively arranged opposite to one of the micro-light-emitting diode lamp beads and at least a portion of the first one-way high-transmittance film. Each of the prism brightening areas and each of the diffusion areas are respectively used to transmit the light source of the micro-light-emitting diode lamp bead to the liquid crystal layer, and to allow the display image of the liquid crystal layer to be emitted into the user's field of view through the first one-way high-transmittance film.

[0015] Wherein, the first film sheet further comprises a plurality of first transparent areas arranged in an array and at intervals, each of which is sandwiched between two adjacent prism brightness enhancement areas, and the second film sheet further comprises a plurality of second transparent areas arranged in an array and at intervals, each of which is sandwiched between two adjacent diffusion areas;

[0016] The ambient light is transmitted to each of the autonomous light-emitting pixel layers through each of the structural incident lenses, each of the second one-way high-transmittance films, the display area, each of the first transparent areas, and each of the second transparent areas.

[0017] Wherein, the backlight module further includes a third substrate and a heat-conducting layer covering the third substrate on a side facing the second substrate, and the heat-conducting layer is sandwiched between the third substrate and the backlight substrate;

[0018] The display area also includes multiple color filter layers, each of which is embedded in the first PI alignment layer and in contact with the first substrate. Each of the color filter layers is arranged opposite to each of the micro-light emitting diode lamp beads. The white light irradiated by each of the micro-light emitting diode lamp beads passes through each of the color filter layers and emits one of the colors of red, green and blue to the first unidirectional high-transmittance film and into the user's line of sight.

[0019] Among them, the autonomous light-emitting pixel layer is constructed of Mg2SiO4:RE series thermoluminescent materials and / or RGB different color photoluminescent materials, and the Mg2SiO4:RE is formed by doping rare earth elements into the Mg2SiO4 characteristics, and the rare earth elements include any one of Ce, Pr, Nd, Sm, Eu, Tb, Dy, Er, Tm or Yb.

[0020] Among them, the backlight module also includes a packaging frame, which wraps the first substrate, the second substrate, the display area between the first substrate and the second substrate, and the periphery of the backlight module located on the side of the second substrate away from the first substrate, and is used to assemble the first substrate, the second substrate, the display area and the backlight module into one.

[0021] The display device provided by the present invention includes the above-mentioned display panel.

[0022] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0023] The display panel and the display device provided in the embodiments of the present application add an autonomous light-emitting pixel layer to the light source layer of the micro-LED backlight module, that is, an autonomous light-emitting pixel layer is set in the area between every two micro-LED lamp beads. It should be pointed out that the autonomous light-emitting pixel layer is constructed as a thermoluminescent structure and / or a photoluminescent structure. The thermoluminescent structure and / or the photoluminescent structure here can be understood as a structure composed of thermoluminescent materials and / or photoluminescent materials. In this way, the independent light-emitting pixels can be excited by the common excitation of outdoor light energy and / or the heat energy generated by the light emission and heating of each micro-LED lamp bead. The light pixel layer displays one of the colors red, green, and blue respectively; and the self-luminous pixel layer can perform the two functions of luminescence and color display under the stimulation of ambient light and / or heat energy generated by the light emission and heating of micro-LED lamp beads without the need for white light from the backlight module, and form a new pixel unit between the atomic pixel, which can be overlapped or overlapped with the original pixel unit. In this way, the display effect of the display panel can be improved by increasing the number of pixel units or increasing the number of sub-pixels in the original pixel unit. The display effect here can be to improve the resolution or to improve the display brightness. In addition, in outdoor scenes with ambient light, turn on the backlight module to allow the micro-LED lamp beads to continue to emit light and heat, so that the self-luminous pixel layer can perform the two functions of luminescence and color display under the stimulation of the heat energy, thereby enabling the micro-LED display panel to enhance the display effect in outdoor scenes with ambient light. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0027] Figure 1 A schematic diagram of the cross-sectional structure of a display panel provided in an embodiment of the present application Figure 1 (Shows the incident path of ambient light transmitted to the self-luminous pixel layer;

[0028] Figure 2 A schematic diagram of the cross-sectional structure of a display panel provided in an embodiment of the present application Figure 2 (The color with brightness of the self-luminous pixel layer is emitted to the outdoors through the structural incident lens);

[0029] Figure 3 A schematic diagram of the main structure of the second film of the display panel provided in an embodiment of the present application;

[0030] Figure 4 Schematic diagram of the main structure of the first film of the display panel provided in the embodiment of the present application Figure 4 ;

[0031] Figure 5 A sub-pixel arrangement method 1 of the autonomous light-emitting pixel layer and the micro-light-emitting diode lamp beads in the display panel provided in the embodiment of the present application;

[0032] Figure 6 A second sub-pixel arrangement of the autonomous light-emitting pixel layer and the micro-light-emitting diode lamp beads in the display panel provided in the embodiment of the present application;

[0033] Figure 7 The third sub-pixel arrangement of the autonomous light-emitting pixel layer and the micro-light-emitting diode lamp beads in the display panel provided in the embodiment of the present application.

[0034] Description of reference numerals:

[0035] 100, display panel; 1, first substrate; 2, second substrate; 3, display area; 4, backlight module; 5, light-transmitting component; 31, liquid crystal layer; 32, lower polarizer; 33, first PI alignment layer; 34, second PI alignment layer; 35, TFT thin film transistor; 36, color filter layer; 41, light source layer; 42, backlight substrate; 43, first transparent resin layer; 44, second transparent resin layer; 45, first diaphragm; 46, second diaphragm; 47, third substrate; 48. Thermal conductive layer; 49. Packaging frame; 451. Prism brightening area; 452. First transparent area; 461. Diffusion area; 462. Second transparent area; 411. Micro light-emitting diode lamp beads; 412. Autonomous light-emitting pixel layer; 51. Structural incident lens; 52. One-way high-transmittance film group; 53. Upper polarizer; 521. First one-way high-transmittance film; 522. Second one-way high-transmittance film; 511. Plane area; 512. Bevel area; A. New pixel unit. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0038] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a change in posture or a change in motion state, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptions used herein have been interpreted accordingly.

[0039] The energy loss based on micro-light emitting diodes is large, and a large part of the energy is converted into heat energy, resulting in serious energy loss.

[0040] In order to alleviate the above-mentioned problems, the embodiments of the present application provide a display panel and a display device, which can utilize the thermal energy converted by micro-light emitting diodes to stimulate the characteristics of thermoluminescent materials and photoluminescent materials, thereby obtaining a new micro-light emitting diode outdoor display screen that can reduce power consumption and achieve high resolution. It is a special outdoor display structure that utilizes outdoor light energy and / or thermal energy excitation of micro-light emitting diodes to increase the number of display pixels or improve the display brightness of each display pixel, thereby improving the display resolution.

[0041] refer to Figure 1-Figure 7The present application provides a display panel 100, comprising: a first substrate 1, a second substrate 2, a display area 3 and a backlight module 4 located between the first substrate 1 and the second substrate 2. For example, the first substrate 1 and the second substrate 2 can both be glass substrates, and the glass substrate has a light-transmitting property; further, the display area 3 comprises a liquid crystal layer 31, and for example, the liquid crystal layer 31 comprises a plurality of liquid crystal molecules; the backlight module 4 comprises a light source layer 41, and the light source layer 41 comprises a plurality of micro light-emitting diode lamp beads 411 arranged in a plurality of rows and columns and sandwiched between each of the light source layers 41 and the backlight module 41; The autonomous light-emitting pixel layer 412 between two adjacent micro-LED lamp beads 411 is constructed as a thermoluminescent structure and / or a photoluminescent structure, and is configured to display different RGB colors under the common excitation of outdoor light energy and / or thermal energy generated by the light emission and heating of each micro-LED lamp bead 411; a new pixel unit A is formed between each main light-emitting pixel layer 412 and the sub-pixel where the adjacent micro-LED lamp bead 411 is located; the new pixel unit A is overlapped or coincident with the original pixel unit.

[0042] The display panel 100 of the embodiment of the present application is adopted, and an autonomous light-emitting pixel layer 412 is added to the light source layer 41 of the micro-LED backlight module 4, that is, an autonomous light-emitting pixel layer 412 is set in the area between every two micro-LED lamp beads 411. It should be pointed out that the autonomous light-emitting pixel layer 412 is constructed as a thermoluminescent structure and / or a photoluminescent structure. The thermoluminescent structure and / or photoluminescent structure here can be understood as a structure composed of thermoluminescent materials and / or photoluminescent materials. In this way, under the common excitation of outdoor light energy and / or heat energy generated by the light emission and heating of each micro-LED lamp bead 411, each main light-emitting pixel layer 412 can display one of the colors of red, green and blue.

[0043] Furthermore, the self-luminous pixel layer 412 can perform the two functions of luminescence and color display under the stimulation of ambient light and / or heat energy generated by the micro-LED lamp beads 411 for luminescence and heating without the need for white light irradiation from the backlight module 4, and form a new pixel unit A between the atomic pixel, and the new pixel unit A can be overlapped or overlapped with the original pixel unit. In this way, the display effect of the display panel 100 can be improved by increasing the number of pixel units or increasing the number of sub-pixels in the original pixel unit. The display effect here can be to improve the resolution or to improve the display brightness. In addition, in an outdoor scene with ambient light, turn on the backlight module 4 to allow the micro-LED lamp beads 411 to continue to emit light and heat, so that the self-luminous pixel layer 412 can perform the two functions of luminescence and color display under the stimulation of the heat energy, thereby enabling the micro-LED display panel 100 to enhance the display effect in an outdoor scene with ambient light.

[0044] For example, Figure 5 and Figure 6 As shown, when an autonomous light-emitting pixel layer 412 is disposed between each two adjacent sub-pixels in the original pixel unit, the sandwiched autonomous light-emitting pixel layer 412 may be a new sub-pixel that emits the same color light source as one of the adjacent atomic pixels, that is, forming Figure 5 The new pixel unit A overlaps with the original pixel unit, but the new pixel unit A obviously includes more sub-pixels, where the sub-pixels include atomic pixels and new sub-pixels, that is, the brightness of the formed new sub-pixels is stronger, and the display effect can be improved by improving the brightness of a single pixel unit; or, the sandwiched autonomous light-emitting pixel layer 412 can be a new sub-pixel that emits light sources of different colors from the two adjacent atomic pixels, that is, forming Figure 6 The new pixel unit A at least partially overlaps with the original pixel unit. Obviously, this arrangement can obtain a larger number of pixel units, thereby improving the resolution by increasing the number of pixel units.

[0045] For example, Figure 7 As shown, each atomic pixel of the original pixel unit is arranged in multiple rows and columns, and a gap is left between two adjacent sub-pixels. The autonomous light-emitting pixel layer 412 can be arranged as follows Figure 5 and Figure 6 The autonomous light-emitting pixel layer 412 may also be disposed between two atomic pixels in each horizontal row as shown. Figure 7 In the gaps between each vertical column shown, a new pixel unit A can be formed between the two atomic pixels in the previous horizontal row and the new sub-pixels in the gaps between the adjacent horizontal rows. That is, this arrangement of sub-pixels can obtain a larger number of pixel units, thereby improving the resolution by increasing the number of pixel units.

[0046] It should be noted that each newly formed pixel unit A includes three sub-pixels, each of which emits one of the colors red, green, and blue. Figure 5-Figure 7 , wherein R represents red, G represents green, B represents blue, R' represents red, G' represents green, B' represents blue, wherein R, G, B represent atomic pixels respectively, wherein R', G'B' represent new sub-pixels respectively, and the new sub-pixels are jointly constituted by each main light-emitting pixel layer 412 and its corresponding display area 3.

[0047] Considering the light energy excitation color development conditions of each main light-emitting pixel layer 412, the display panel 100 of the embodiment of the present application also includes a light-transmitting component 5, which includes a structured incident lens 51, a one-way high-transmittance film group 52 and an upper polarizer 53. For example, the upper polarizer 53 is used to cooperate with the lower polarizer 32 described later to perform polarization; the upper polarizer 53 is covered on the side of the first substrate 1 away from the second substrate 2, the one-way high-transmittance film group 52 is covered on the side of the upper polarizer 53 away from the first substrate 1, and the one-way high-transmittance film group 52 includes a first one-way high-transmittance film 521 and an array embedded with the first one-way high-transmittance film Multiple second unidirectional high-transmittance films 522 in 521; multiple structural incident lenses 51 are arranged, each structural incident lens 51 is covered on the side of the unidirectional high-transmittance film group 52 away from the upper polarizer 53, and each structural incident lens 51 is arranged at intervals, each structural incident lens 51 is respectively arranged opposite to an autonomous light-emitting pixel layer 412, every two second unidirectional high-transmittance films 522 and the first unidirectional high-transmittance films 521 sandwiched therebetween are correspondingly arranged between each structural incident lens 51 and each autonomous light-emitting pixel layer 412, and the first unidirectional high-transmittance film 521 is used to block ambient light from being transmitted to the liquid crystal layer 31.

[0048] In this embodiment, ambient light passes through each structural incident lens 51, each second unidirectional high-transmittance film 522, and the liquid crystal layer 31 in sequence and is transmitted to each autonomous light-emitting pixel layer 412, so that each autonomous light-emitting pixel layer 412 can display one of the colors of red, green, and blue under the stimulation of outdoor light energy of the ambient light. In this way, the autonomous light-emitting pixel layer 412 can achieve the combined effect of the color filter layer 36 and the micro-light-emitting diode lamp bead 411 under the stimulation of outdoor light energy. It should be pointed out that the use of the light-transmitting component 5 of the present application can make the outdoor light energy pass through the second unidirectional high-transmittance film 522 to transmit to the autonomous light-emitting pixel layer 412, and make the autonomous light-emitting pixel layer 412 after luminescence and color display combined with the image of the liquid crystal layer 31 be transmitted to the user's field of view through the first unidirectional high-transmittance film 521. It should be further pointed out that the light transmission directions of the first unidirectional high-transmittance film 521 and the second unidirectional high-transmittance film 522 are arranged in opposite directions, so that the first unidirectional high-transmittance film 521 can transmit the colored and bright image in the display panel 100 to the user's field of view or outdoors, and the second unidirectional high-transmittance film 522 can transmit the outdoor ambient light to the autonomous luminous pixel layer 412, thereby achieving the effect of forming a new pixel unit A.

[0049] Considering that at least a portion of the structural incident lens 51 is used to transmit outdoor ambient light to the autonomous luminous pixel layer 412, the remaining portion of the incident lens is used to transmit the image and color of the new display area 3 formed by the new pixel unit A and the original pixel unit to the user's field of view or the outdoor environment. In the display panel 100 provided in the embodiment of the present application, the structural incident lens 51 includes a plane area 511 and a bevel area 512 located on both sides of the plane area 511, and each side bevel area 512 is arranged opposite to a second unidirectional high-transmittance film 522, so as to allow the ambient light to be transmitted to each autonomous luminous pixel layer 412 via the bevel area 512, the second unidirectional high-transmittance film 522, and the liquid crystal layer 31 in sequence.

[0050] For example, the inclined surface area 512 may be formed on the plane area 511 and inclined toward a side away from the display panel 100; or Figure 1 and Figure 2 As shown, the bevel region 512 may also be formed in the plane region 511 and tilted toward the side close to the display panel 100. It should be noted that the bevel region 512 occupies a smaller area of ​​the structural incident lens 51, while the plane region 511 occupies a larger area of ​​the structural incident lens 51.

[0051] In this way, the bevel region 512 and the second unidirectional high-transmittance film 522 are relatively fitted and arranged, and combined with the light transmission direction of the second unidirectional high-transmittance film 522, the outdoor ambient light can be refracted through the bevel region 512 to the second unidirectional high-transmittance film 522, and then transmitted through the display region 3 to the corresponding autonomous light-emitting pixel layer 412. And because the bevel region 512 occupies a smaller area of ​​the structural region of the structural incident lens 51, and the plane region 511 occupies a larger area of ​​the structural region of the structural incident lens 51, in this way, the area of ​​the black dots or black lines formed when displaying the image will be very small, and will not affect the display effect.

[0052] Considering the specific installation scheme of each micro-LED lamp bead 411 and each main light-emitting pixel layer 412, in the display panel 100 provided in the present application, the backlight module 4 also includes a backlight substrate 42 and a first transparent resin layer 43 and a second transparent resin layer 44 stacked on the side of the backlight substrate 42 facing the second substrate 2. Exemplarily, the two transparent resin layers can be used as transparent resin encapsulation layers to protect and flatten; each micro-LED lamp bead 411 is installed on the backlight substrate 42 and embedded between the first transparent resin layer 43 and the second transparent resin layer 44, and each main light-emitting pixel layer 412 is embedded in the second transparent resin layer 44. The heat energy generated by each micro-LED lamp bead 411 is transferred to each independent light-emitting pixel layer 412 through the first transparent resin layer 43 and / or the second transparent resin layer 44.

[0053] Combination Figure 1As shown, the first transparent resin layer 43 is located below the second transparent resin layer 44, and the micro-LED lamp beads 411 are installed on the backlight substrate 42. Exemplarily, the backlight substrate 42 is used to carry the circuit substrate of the backlight micro-LED lamp beads 411, and is in contact with the first transparent resin layer 43 and the second transparent resin layer 44 at the same time. Although the autonomous light-emitting pixel layer 412 is embedded in the second transparent resin layer 44, it is also in contact with the first transparent resin layer 43. In this way, the heat energy generated by the light emission of the micro-LED lamp beads 411 can be transferred to the autonomous light-emitting pixel layer 412 via the first transparent resin layer 43 and the second transparent resin layer 44, and the autonomous light-emitting pixel layer 412 emits light and displays color under the excitation of the heat energy.

[0054] Further considering that the autonomous light-emitting pixel layer 412 can obtain the excitation of the heat energy generated by the light emission of the micro-LED lamp beads 411, in the display panel 100 provided in the embodiment of the present application, at least part of the structure of the autonomous light-emitting pixel layer 412 is in contact with the first transparent resin layer 43.

[0055] That is, further reference Figure 1 In the cross-sectional structure of the display panel 100, no matter whether it is the autonomous light-emitting pixel layer 412 arranged in the horizontal spacing gaps between the atomic pixels or the autonomous light-emitting pixel layer 412 arranged in the vertical spacing gaps between the atomic pixels, as long as at least part of the structure of each autonomous light-emitting pixel layer 412 is in contact with the first transparent resin layer 43, the heat energy generated by the light emission of the micro-light-emitting diode lamp beads 411 can stimulate the autonomous light-emitting pixel layer 412 to emit light and display color.

[0056] Considering that the micro-light emitting diode lamp bead 411 needs to emit the light source inside the display panel 100 from the inside to the outside to the outdoors, that is, the light energy of the atomic pixel can only be emitted from the inside to the outside, but not from the outside to the inside, in the display panel 100 provided in the present application, the display area 3 also includes a lower polarizer 32. Exemplarily, the lower polarizer 32 plays the role of LCD polarization; the lower polarizer 32 is covered on the side of the second substrate 2 away from the first substrate 1, and the backlight module 4 also includes a first film 45 and a second film 46. The first film 45 is covered on the side of the lower polarizer 32 away from the second substrate 2, and the second film 46 is covered on the side of the first film 45 away from the lower polarizer 32; the first film 45 includes a plurality of prism brightening areas 451 arranged in an array and spaced apart, and the second film 46 includes a plurality of diffusion areas 461 arranged in an array and spaced apart.

[0057] Exemplarily, both the first film layer and the second film layer are transparent film layers.

[0058] Exemplarily, the diffusion area 461 can be understood as a diffusion film, which plays a role in making light uniform.

[0059] Exemplarily, the prism brightening area 451 can be understood as a prism brightening film, which plays a role in improving brightness.

[0060] Among them, each prism brightening area 451 and each diffusion area 461 are respectively arranged opposite to a micro-LED lamp bead 411 and at least a part of the first unidirectional high-transmittance film 521. Each prism brightening area 451 and each diffusion area 461 are respectively used to transmit the light source of the micro-LED lamp bead 411 to the liquid crystal layer 31, and make the display image of the liquid crystal layer 31 enter the user's field of view through the first unidirectional high-transmittance film 521.

[0061] It should be noted that the prism brightening area 451 only has a one-way light transmission function, that is, the prism increment area can transmit the light source of the micro-LED lamp bead 411 to the user's field of view or outdoors through the liquid crystal layer 31 and the first one-way high-transmittance film 521.

[0062] Considering that the autonomous light-emitting pixel layer 412 can receive ambient light from the outside and the inside, and can also transmit the image after its own light emission and color development combined with the liquid crystal layer 31 to the outdoors, in the display panel 100 provided in the embodiment of the present application, the first film 45 also includes a plurality of first transparent areas 452 arranged in an array and at intervals, each first transparent area 452 is sandwiched between two adjacent prism brightening areas 451, and the second film 46 also includes a plurality of second transparent areas 462 arranged in an array and at intervals, each second transparent area 462 is sandwiched between two adjacent diffusion areas 461.

[0063] In this embodiment, ambient light is transmitted to each autonomous light-emitting pixel layer 412 through each structural incident lens 51, each second one-way high-transmittance film 522, the display area 3, each first transparent area 452 and each second transparent area 462. At the same time, the luminous color rendering effect formed by the autonomous light-emitting pixel layer 412 can be transmitted to the corresponding liquid crystal layer 31 through the first transparent area 452 and the second transparent area 462, and form a new image of a new pixel unit A with the corresponding liquid crystal layer 31. The new image can be transmitted to the structural incident lens 51 through the first one-way high-transmittance film 521 corresponding to the planar area 511 of the structural incident lens 51 and transmitted to the outdoors or the user's field of view.

[0064] Considering the heat dissipation solution of the backlight module 4 for the heat generated by the micro-light emitting diode lamp beads 411, in the display panel 100 of the embodiment of the present application, the backlight module 4 also includes a third substrate 47 and a thermal conductive layer 48 covering the side of the third substrate 47 facing the second substrate 2, and the thermal conductive layer 48 is sandwiched between the third substrate 47 and the backlight substrate 42.

[0065] Exemplarily, the third substrate 47 may be a transparent substrate, or the third substrate 47 may be a glass substrate.

[0066] Exemplarily, the heat conductive layer 48 may be a graphene super heat conductive layer 48 plate.

[0067] Considering the material composition of the autonomous light-emitting pixel layer 412, in the display panel 100 provided in the embodiment of the present application, the autonomous light-emitting pixel layer 412 can be constructed to be composed of Mg2SiO4:RE series thermoluminescent materials and / or RGB different color photoluminescent materials, and the Mg2SiO4:RE is formed by doping rare earth elements (RE) into the Mg2SiO4 characteristics, and the rare earth elements include any one of Ce (cerium), Pr (praseodymium), Nd (neodymium), Sm (samarium), Eu (europium), Tb (terbium), Dy (dysprosium), Er (erbium), Tm (thulium) or Yb (ytterbium).

[0068] Exemplarily, the self-luminous pixel layer 412 may include only Mg2SiO4:RE series thermoluminescent materials, or only RGB different color photoluminescent materials, or may include both Mg2SiO4:RE series thermoluminescent materials and RGB different color photoluminescent materials.

[0069] When the self-luminous pixel layer 412 includes both thermoluminescent material and photoluminescent material, the thermoluminescent material and the photoluminescent material may be arranged in layers vertically or horizontally.

[0070] When an over-under layered arrangement is used, the photoluminescent material is located above the thermoluminescent material.

[0071] Exemplarily, Mg2SiO4 is a compound, whose Chinese name is magnesium silicate. It has a specific crystal structure and chemical properties, and has certain applications in fields such as materials science. It is often used as a matrix material to provide a stable chemical environment for the doping of other elements. The aforementioned Ce (cerium), Pr (praseodymium), Nd (neodymium), Sm (samarium), Eu (europium), Tb (terbium), Dy (dysprosium), Er (erbium), Tm (thulium) or Yb (ytterbium) are all rare earth elements, which have unique electronic structures and optical, magnetic and other properties. Doping these rare earth elements into Mg2SiO4 can change the physical and chemical properties of Mg2SiO4, such as optical properties, luminescence characteristics, etc., so that Mg2SiO4:RE materials have potential application value in many optoelectronic device fields such as light-emitting diodes, phosphors, laser materials, optical sensors, etc.

[0072] For example, when Eu is doped into Mg2SiO4, the material may emit red fluorescence under excitation of a specific wavelength, and can be used as a phosphor material in the field of lighting or display.

[0073] For example, when Tb is doped into Mg2SiO4, the material may emit green fluorescence under excitation of a specific wavelength, and can be used as a phosphor material in the field of lighting or display.

[0074] For example, when Ce is doped into Mg2SiO4, the material may emit blue fluorescence under excitation of a specific wavelength, and can be used as a phosphor material in the field of lighting or display.

[0075] Considering the initial alignment scheme of the liquid crystal molecules in the liquid crystal layer 31, the display area 3 also includes a first PI alignment layer 33 and a second PI alignment layer 34. The first PI alignment layer 33 is covered on the side of the first substrate 1 facing the second substrate 2, the first PI alignment layer 33 is sandwiched between the first substrate 1 and the liquid crystal layer 31, and the second PI alignment layer 34 is covered on the side of the liquid crystal layer 31 away from the first PI alignment layer 33. The first PI alignment layer 33 and the second PI alignment layer 34 are respectively used to give the liquid crystal molecules in the liquid crystal layer 31 an initial alignment angle, and the initial alignment angle is used to limit the rotation direction of the liquid crystal molecules under the action of the driving electric field force.

[0076] In this way, the liquid crystal molecules can rotate in the direction of the preset initial alignment angle under the deflection effect of the driving electric field, and will not rotate in the direction opposite to the preset initial alignment angle.

[0077] Considering that the liquid crystal molecules in the liquid crystal layer 31 can be affected by the driving electric field, in the display panel 100 provided in the embodiment of the present application, the display area 3 also includes a TFT thin film transistor 35, which is sandwiched between the second PI alignment layer 34 and the second substrate 2. The TFT thin film transistor 35 is used to energize the pixel electrode and the common electrode to form a driving electric field for driving the liquid crystal molecules to rotate.

[0078] Exemplarily, the TFT thin film transistor 35 serves as a switch for controlling charging and discharging, and plays a role in controlling the size of the electric field.

[0079] Considering that the white light behind each micro-LED lamp bead 411 can enable each atomic pixel to emit light of one of the three primary colors under the action of the color filter layer 36, in the display panel 100 provided in the embodiment of the present application, the display area 3 also includes multiple color filter layers 36, each color filter layer 36 is embedded in the first PI alignment layer 33 and in contact with the first substrate 1, and each color filter layer 36 is arranged opposite to each micro-LED lamp bead 411. The white light irradiated by each micro-LED lamp bead 411 passes through each color filter layer 36 and emits one of the colors of red, green and blue to the first unidirectional high-transmittance film 521 and into the user's line of sight.

[0080] Considering the overall structural stability of the display panel 100, in the display panel 100 provided in the embodiment of the present application, the backlight module 4 also includes a packaging frame 49, which wraps the first substrate 1, the second substrate 2, the display area 3 between the first substrate 1 and the second substrate 2, and the outer periphery of the backlight module 4 located on the side of the second substrate 2 away from the first substrate 1, and is used to assemble the first substrate 1, the second substrate 2, the display area 3 and the backlight module 4 into one.

[0081] In summary, the display panel 100 provided in the embodiment of the present application can add an autonomous light-emitting pixel layer 412 on the basis of the original micro-light-emitting diode backlight module 4, and the autonomous light-emitting pixel layer 412 can autonomously emit light and display color under the stimulation of outdoor ambient light and / or the heat energy generated by the light emitted by the micro-light-emitting diode lamp beads 411, and can form a new pixel unit A between the adjacent atomic pixels, thereby enhancing the display effect of the display panel 100.

[0082] Specifically, it is a design that mainly utilizes the characteristics of the mini ed backlight display structure, and increases the number of pixels on the basis of reducing the display backlight micro-LED lamp beads 411 without separately designing other backlight power-consuming devices. The autonomous luminous pixel layer 412 uses photoluminescent and / or thermoluminescent composite luminescent materials, and displays different RGB colors after being excited by the temperature of the external light and the micro-LED lamp beads 411, thus serving as an autonomous luminous pixel unit. The design of the autonomous luminescent material in the backlight module 4 can be arbitrarily arranged in combination with the product parameter requirements and pixel arrangement, refer to Figure 5-Figure 7 The material of the autonomous light-emitting pixel layer 412 can have the ability to be excited by both thermal energy and light energy.

[0083] A new micro-light emitting diode outdoor display screen that can reduce power consumption and achieve high resolution is adopted according to the embodiment of the present application, and a special film layer of light and heat energy storage material is designed. The outdoor light energy and thermal energy excitation of the micro-light emitting diodes are utilized to increase the number of display pixels, thereby improving the display resolution. A special outdoor display structure is formed.

[0084] The embodiment of the present application further provides a display device, including the aforementioned display panel 100, which can obtain all the effects of the display panel 100 and will not be elaborated herein.

[0085] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0086] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0087] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A display panel, comprising: A first substrate (1), a second substrate (2), a display area (3) located between the first substrate (1) and the second substrate (2), and a backlight module (4) located on a side of the second substrate (2) away from the first substrate (1), characterized in that: The display area (3) comprises a liquid crystal layer (31); The backlight module (4) comprises a light source layer (41), the light source layer (41) comprising a plurality of micro-light emitting diode lamp beads (411) arranged in a plurality of rows and columns and an autonomous light emitting pixel layer (412) sandwiched between each two adjacent micro-light emitting diode lamp beads (411), the autonomous light emitting pixel layer (412) being constructed as a thermoluminescent structure and / or a photoluminescent structure, and each autonomous light emitting pixel layer (412) being configured to display one of the colors red, green and blue under the combined excitation of outdoor light energy and / or heat energy generated by the light emission and heating of each micro-light emitting diode lamp bead (411); A new pixel unit (A) is formed between each of one, two or three of the autonomous light-emitting pixel layers (412) and the sub-pixels where the adjacent micro-light-emitting diode lamp beads (411) are located; The new pixel unit (A) is arranged to overlap or coincide with the original pixel unit.

2. The display panel according to claim 1, characterized in that: The display panel (100) further comprises a light-transmitting component (5), the light-transmitting component (5) comprising a structured incident lens (51), a one-way high-transmittance film group (52) and an upper polarizer (53), the upper polarizer (53) being covered on a side of the first substrate (1) away from the second substrate (2), the one-way high-transmittance film group (52) being covered on a side of the upper polarizer (53) away from the first substrate (1), the one-way high-transmittance film group (52) comprising a first one-way high-transmittance film (521) and a plurality of second one-way high-transmittance films (522) arrayed and embedded in the first one-way high-transmittance film (521); the structured incident lens (51) is provided A plurality of structured incident lenses (51) are arranged, each of the structured incident lenses (51) is covered on a side of the one-way high-transmittance film group (52) away from the upper polarizer (53), and each of the structured incident lenses (51) is arranged at intervals, each of the structured incident lenses (51) is arranged opposite to one of the autonomous light-emitting pixel layers (412), and every two of the second one-way high-transmittance films (522) and the first one-way high-transmittance films (521) sandwiched therebetween are correspondingly arranged between each of the structured incident lenses (51) and each of the autonomous light-emitting pixel layers (412), and the first one-way high-transmittance films (521) are used to block ambient light from being transmitted to the liquid crystal layer (31); The ambient light sequentially passes through each of the structural incident lenses (51), each of the second one-way high-transmittance films (522), and the liquid crystal layer (31), and is transmitted to each of the autonomous light-emitting pixel layers (412), so as to enable each of the autonomous light-emitting pixel layers (412) to display one of the colors of red, green, and blue under the stimulation of outdoor light energy of the ambient light.

3. The display panel according to claim 2, characterized in that: The structured incident lens (51) comprises a plane region (511) and bevel regions (512) located on both sides of the plane region (511), and the bevel regions (512) on each side are arranged opposite to a second one-way high-transmittance film (522), so as to allow the ambient light to be transmitted sequentially through the bevel regions (512), the second one-way high-transmittance film (522), and the liquid crystal layer (31) to each of the autonomous light-emitting pixel layers (412).

4. The display panel according to claim 2, characterized in that: The backlight module (4) further comprises a backlight substrate (42) and a first transparent resin layer (43) and a second transparent resin layer (44) stacked on the side of the backlight substrate (42) facing the second substrate (2); Each of the micro-light emitting diode lamp beads (411) is mounted on the backlight substrate (42) and embedded between the first transparent resin layer (43) and the second transparent resin layer (44); each of the autonomous light emitting pixel layers (412) is embedded in the second transparent resin layer (44); and heat energy generated by each of the micro-light emitting diode lamp beads (411) is transferred to each of the autonomous light emitting pixel layers (412) through the first transparent resin layer (43) and / or the second transparent resin layer (44); At least a portion of the structure of the autonomous light-emitting pixel layer (412) is in contact with the first transparent resin layer (43).

5. The display panel according to claim 4, characterized in that: The display area (3) further comprises a lower polarizer (32), the lower polarizer (32) being covered on a side of the second substrate (2) away from the first substrate (1), and the backlight module (4) further comprises a first film (45) and a second film (46), the first film (45) being covered on a side of the lower polarizer (32) away from the second substrate (2), and the second film (46) being covered on a side of the first film (45) away from the lower polarizer (32); The first film (45) includes a plurality of prism brightness enhancement areas (451) arranged in an array and at intervals, and the second film (46) includes a plurality of diffusion areas (461) arranged in an array and at intervals; Each of the prism brightening regions (451) and each of the diffusion regions (461) are respectively arranged opposite to one of the micro-light emitting diode lamp beads (411) and at least a portion of the first one-way high-transmittance film (521); each of the prism brightening regions (451) and each of the diffusion regions (461) are respectively used to transmit the light source of the micro-light emitting diode lamp bead (411) to the liquid crystal layer (31), and to allow the display image of the liquid crystal layer (31) to be projected into the user's field of vision via the first one-way high-transmittance film (521).

6. The display panel according to claim 5, characterized in that: The first film (45) further comprises a plurality of first transparent areas (452) arranged in an array and at intervals, each of the first transparent areas (452) being sandwiched between two adjacent prism brightness enhancement areas (451); the second film (46) further comprises a plurality of second transparent areas (462) arranged in an array and at intervals, each of the second transparent areas (462) being sandwiched between two adjacent diffusion areas (461); The ambient light is transmitted to each of the autonomous light-emitting pixel layers (412) via each of the structural incident lenses (51), each of the second one-way high-transmittance films (522), the display area (3), each of the first transparent areas (452) and each of the second transparent areas (462).

7. The display panel according to claim 4, characterized in that: The backlight module (4) further comprises a third substrate (47) and a heat-conducting layer (48) covering the side of the third substrate (47) facing the second substrate (2), wherein the heat-conducting layer (48) is sandwiched between the third substrate (47) and the backlight substrate (42); The display area (3) further comprises a plurality of color filter layers (36), each of the color filter layers (36) being embedded in the first PI alignment layer (33) and in contact with the first substrate (1), each of the color filter layers (36) being arranged opposite to each of the micro-light emitting diode lamp beads (411), and the white light irradiated by each of the micro-light emitting diode lamp beads (411) passing through each of the color filter layers (36) and being emitted in one of the colors of red, green and blue to the first unidirectional high-transmittance film (521) and then emitted into the user's field of vision.

8. The display panel according to claim 1, characterized in that: The autonomous light-emitting pixel layer (412) is constructed to be composed of Mg2SiO4:RE series thermoluminescent materials and / or RGB different color photoluminescent materials, and the Mg2SiO4:RE is formed by doping rare earth elements into the Mg2SiO4 characteristics, and the rare earth elements include any one of Ce, Pr, Nd, Sm, Eu, Tb, Dy, Er, Tm or Yb.

9. The display panel according to claim 1, characterized in that: The backlight module (4) further comprises a packaging outer frame (49), wherein the packaging outer frame (49) wraps around the first substrate (1), the second substrate (2), the display area (3) between the first substrate (1) and the second substrate (2), and the outer periphery of the backlight module (4) located on the side of the second substrate (2) away from the first substrate (1), and is used to assemble the first substrate (1), the second substrate (2), the display area (3) and the backlight module (4) into one body.

10. A display device, characterized in that: The display device comprises a display panel (100) as claimed in any one of claims 1 to 9.

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