CN112419909A - Micro light-emitting diode transparent display - Google Patents
Micro light-emitting diode transparent display Download PDFInfo
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- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices 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
- H01L27/153—Devices 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
- H01L27/156—Devices 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
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Abstract
A micro light emitting diode transparent display is provided with a first display surface and a second display surface which are opposite, and comprises a substrate, a plurality of pixel areas and at least one grating layer. The first display surface and the second display surface are positioned on two opposite sides of the substrate. The pixel area array is arranged on the substrate, each pixel area comprises a plurality of micro light-emitting diodes, and the micro light-emitting diodes are electrically connected with the substrate. The grating layer is arranged on the substrate, and the micro light-emitting diode is positioned between the grating layer and the substrate. The grating layer can control a plurality of light rays generated by the micro light emitting diode of the pixel area, and the light rays partially penetrate out of the first display surface and partially reflect to the second display surface. Therefore, the effect of controlling the display direction can be achieved.
Description
Technical Field
The present disclosure relates to a transparent display, and more particularly, to a micro light emitting diode transparent display.
Background
In response to the development trend of displays, the dual-sided display is rapidly developed in the market in addition to the display quality of the one-way display. Generally, the dual-sided display device enables viewers in different directions to view the same or different display images from both sides of the dual-sided display device.
However, most of the current common forms of dual-sided displays achieve the dual-sided display effect by disposing display panels on the front and back sides of the display panel. Therefore, the thickness of the double-sided display may be too thick and the transparency is not good.
Disclosure of Invention
The disclosure provides a micro light emitting diode transparent display, which controls light penetration and reflection through a grating layer, and can achieve the effects of good transparency, reduction of the thickness of the micro light emitting diode transparent display, and control of the display direction.
According to an embodiment of the present disclosure, a micro light emitting diode transparent display is provided, which has a first display surface and a second display surface opposite to each other, and includes a substrate, a plurality of pixel regions, and at least one grating layer. The first display surface and the second display surface are positioned on two opposite sides of the substrate. The pixel area array is arranged on the substrate, each pixel area comprises a plurality of micro light-emitting diodes, and the micro light-emitting diodes are electrically connected with the substrate. The grating layer is arranged on the substrate, and the micro light-emitting diode is positioned between the grating layer and the substrate. The grating layer can control a plurality of light rays generated by the micro light emitting diode of the pixel area, and the light rays partially penetrate out of the first display surface and partially reflect to the second display surface.
The micro led transparent display according to the embodiment of the previous paragraph, wherein the grating layer can be a dyed liquid crystal layer, an electrophoretic layer, or an electrochromic layer.
The transparent display of micro led according to the embodiment of the present invention may further include a flat layer, wherein the flat layer is located between the substrate and the grating layer and covers the micro led.
The micro-led transparent display according to the embodiment described in the previous paragraph, wherein the height of the planarization layer is L1, and the height of each micro-led is L2, which satisfies the following conditions: 10 is more than or equal to L1/L2 and more than 5.
The micro led transparent display according to the embodiment of the previous paragraph, wherein the area ratio of the micro leds in each pixel region may be 10% to 25%.
The micro led transparent display according to the embodiment of the previous paragraph, wherein the grating layer can be a reflective polarizer.
The transparent display of micro led according to the embodiment of the present invention may further include a liquid crystal layer, wherein the liquid crystal layer is located between the substrate and the grating layer and covers the micro led.
In the micro led transparent display according to the embodiment described in the previous paragraph, a pitch between any two adjacent pixel regions is P, which can satisfy the following condition: p is more than or equal to 100 microns.
In the micro led transparent display according to the embodiment of the present invention, the grating layer may include an electrode structure, and the electrode structure is used to adjust the degree of light transmission and reflection of the grating layer.
The transparent display of micro led according to the embodiment of the present invention, wherein the electrode structure can be a transparent conductive layer.
In the micro led transparent display according to the embodiment of the present invention, each pixel region may include three micro leds, and the three micro leds respectively emit blue light, green light, and red light.
In the micro led transparent display according to the embodiment of the present invention, the number of the grating layers may be two, and the grating layers may be a first grating layer and a second grating layer. The first grating layer and the second grating layer are respectively arranged on two opposite sides of the substrate, and the micro light-emitting diode is positioned between the first grating layer and the second grating layer.
In the micro led transparent display according to the embodiment of the present invention, the material of the first grating layer and the material of the second grating layer may be the same, and both may be reflective dye liquid crystal or absorptive dye liquid crystal.
Drawings
FIG. 1 is a schematic diagram of a micro-LED transparent display according to an embodiment of the present invention;
FIG. 2A is a schematic diagram of an arrangement of a micro light emitting diode transparent display according to the embodiment of FIG. 1;
FIG. 2B is a schematic diagram of a micro-LED transparent display according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a micro-LED transparent display according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of a micro-LED transparent display according to still another embodiment of the present invention; and
fig. 5 is a schematic diagram of a micro led transparent display according to another embodiment of the present invention.
Wherein the reference numerals are as follows:
100, 200, 300, 400, 500: micro light-emitting diode transparent display
110, 310, 410, 510: substrate
111, 211, 511: pixel region
120, 220, 320, 420, 520: micro-unit
121, 122, 123, 221, 222, 223, 321, 322, 323, 421, 422, 423, 521, 522, 523: micro light-emitting diode
130, 330, 430: grating layer
131, 531, 571: dyed liquid crystal
132, 432, 532, 572: electrode structure
132a, 432a, 532a, 572 a: upper electrode pattern
132b, 432b, 532b, 572 b: lower electrode pattern
141, 341, 441, 541: a first display surface
142, 342, 442, 542: second display surface
150, 450, 550: planarization layer
360: liquid crystal layer
431: electrochromic layer
530: first grating layer
570: second grating layer
L: light ray
L1: height of the flat layer
L2: height of each micro light-emitting diode
P: the distance between any two adjacent pixel regions
Detailed Description
Referring to fig. 1 and fig. 2A, fig. 1 is a schematic diagram of a micro light emitting diode transparent display 100 according to an embodiment of the invention, and fig. 2A is a schematic diagram of the micro light emitting diode transparent display 100 according to the embodiment of fig. 1. As shown in fig. 1 and fig. 2A, the micro led transparent display 100 has a first display surface 141 and a second display surface 142 opposite to each other, and includes a substrate 110, a plurality of pixel regions 111, a flat layer 150 and at least one grating layer 130, wherein the first display surface 141 and the second display surface 142 are located on two opposite sides of the substrate 110.
The pixel regions 111 are disposed on the substrate 110 in an array, each pixel region 111 has at least one micro unit 120 as a self-emitting light source, and each pixel region 111 includes a plurality of micro light emitting diodes. In more detail, each of the micro units 120 includes a plurality of micro light emitting diodes, and the micro light emitting diodes are electrically connected to the substrate 110. In the embodiment of fig. 1, the micro unit 120 includes three micro light emitting diodes 121, 122, 123, which are red micro light emitting diodes, green micro light emitting diodes, and blue micro light emitting diodes, respectively, that is, the micro light emitting diodes 121, 122, 123 emit red light, green light, and blue light, respectively, but the arrangement order is not limited to the embodiment of fig. 1. Furthermore, the thickness of each micro light emitting diode 121, 122, 123 may be 5 to 10 micrometers, and the size of each micro light emitting diode 121, 122, 123 may be 10 to 30 micrometers, but not limited thereto.
The grating layer 130 is disposed on the substrate 110, and the micro light emitting diodes 121, 122, 123 are disposed between the grating layer 130 and the substrate 110, wherein the grating layer 130 may be a dyed liquid crystal layer, an electrophoretic layer, an electrochromic layer, or a reflective polarizer. In the embodiment shown in fig. 1, the grating layer 130 includes a dyed liquid crystal 131 and an electrode structure 132, wherein the dyed liquid crystal 131 is sandwiched between the electrode structure 132. The dyed liquid crystal 131 may be a Nematic (Nematic) liquid crystal doped with a highly reflective dye, and the dyed liquid crystal 131 utilizes the rotation of the optical axis to control the reflection effect, that is, the dyed liquid crystal 131 utilizes the electrode structure 132 to control the reflection degree, but not limited thereto. It should be noted that the grating layer can be designed with an electrophoretic layer and an electrode structure, and the electrophoretic layer can control the aggregation degree of the particles to change the reflection effect, that is, the dyed liquid crystal and the electrophoretic layer can both control the reflection degree by using the electrode structure, but not limited thereto.
Specifically, the grating layer 130 can control a plurality of light L generated by the micro light emitting diodes 121, 122, 123 of the pixel region 111, and the light L partially penetrates out of the first display surface 141 and partially reflects to the second display surface 142. Therefore, the effect of controlling the display direction (front, back or both) can be achieved, and the volume of the whole micro light-emitting diode transparent display 100 can be reduced.
The electrode structure 132 includes an upper electrode pattern 132a and a lower electrode pattern 132b, the dyed liquid crystal 131 is located between the upper electrode pattern 132a and the lower electrode pattern 132b, and the arrangement of the dyed liquid crystal 131 is controlled by the electric field generated by the upper electrode pattern 132a and the lower electrode pattern 132b to adjust the degree of transmission and reflection of the light L. Therefore, double-sided display or single-sided display can be flexibly set according to the requirements of users, and the display brightness of the double-sided display can be adaptively adjusted. Furthermore, the electrode structure 132 is a transparent conductive layer, and the upper electrode pattern 132a and the lower electrode pattern 132b can be a whole conductive film or patterned according to the position of the pixel region 111.
The flat layer 150 is located between the substrate 110 and the grating layer 130 and covers the micro light emitting diodes 121, 122, 123, and the flat layer 150 is an optical adhesive layer, wherein the optical adhesive layer has light transmittance and may be made of polypropylene, but not limited thereto. Further, the height of the planarization layer 150 is L1, and the height of each of the micro leds 121, 122, 123 is L2, which can satisfy the following conditions: 10 is more than or equal to L1/L2 and more than 5. Therefore, when L1/L2<5, the surface of the planarization layer 150 covered the micro-cells 120 will not be flat enough; when L1/L2>10, the post-process yield and light-emitting efficiency are affected.
Further, the pitch between any two adjacent pixel regions 111 is P, which satisfies the following condition: p is more than or equal to 100 microns. Therefore, the effect of penetrating and reflecting the light L generated by each of the micro light emitting diodes 121, 122, 123 can be prevented from being influenced, and the transparency and the brightness of the micro light emitting diode transparent display 100 can be considered, so as to achieve the preferable display quality.
Referring to fig. 2B, a schematic diagram of a micro led transparent display 200 according to another embodiment of the invention is shown. As can be seen from fig. 2A and 2B, the micro led transparent display 200 of the embodiment of fig. 2B is similar to the micro led transparent display 100 of the embodiment of fig. 2A, except that the area of the micro unit 220 in each pixel region 211 of the micro led transparent display 200 of the embodiment of fig. 2B is 10% to 25%. In detail, the total area of the three micro light emitting diodes 221, 222, 223 in each pixel region 211 projected on a substrate (not shown) is 10% to 25% of the area of the pixel region 211. In other words, the area of the pixel region 211 is equal to the square of the pitch between any two adjacent pixel regions 211, and the sum of the projected areas of the three micro light emitting diodes 221, 222, 223 on the substrate is 0.1P2To 0.25P2. Therefore, the transparency of the micro light-emitting diode transparent display 200 can be improved, and if the design that P is more than or equal to 100 micrometers is matched, the transparency of the micro light-emitting diode transparent display 200 can reach more than 60%.
In addition, the structure and the configuration relationship of the other elements in the embodiment of fig. 2B are the same as those in the embodiment of fig. 2A, and will not be further described herein.
Referring to fig. 3, a schematic diagram of a micro led transparent display 300 according to another embodiment of the invention is shown. As shown in fig. 3, the micro led transparent display 300 has a first display surface 341 and a second display surface 342 opposite to each other, and includes a substrate 310, a plurality of pixel regions (not shown), a liquid crystal layer 360 and at least one grating layer 330, wherein the first display surface 341 and the second display surface 342 are located on two opposite sides of the substrate 310.
The pixel region array is disposed on the substrate 310, and each pixel region is disposed with at least one micro unit 320 as a self-emitting light source, and each pixel region includes a plurality of micro light emitting diodes. In more detail, each of the micro units 320 includes a plurality of micro light emitting diodes, and the micro light emitting diodes are electrically connected to the substrate 310. In the embodiment of fig. 3, the micro unit 320 includes three micro light emitting diodes 321, 322, 323, wherein the micro light emitting diodes 321, 322, 323 are a red micro light emitting diode, a green micro light emitting diode, and a blue micro light emitting diode, respectively, that is, the micro light emitting diodes 321, 322, 323 emit red light, green light, and blue light, respectively, but the arrangement order is not limited to the disclosure of the embodiment of fig. 3.
The grating layer 330 is disposed on the micro unit 320, wherein in the embodiment of fig. 3, the grating layer 330 is a reflective polarizer. The reflective polarizer is used in conjunction with the liquid crystal layer 360, and the reflective polarizer can reflect a specific polarized light. In detail, the substrate 310 has a liquid crystal control electrode (not shown) for controlling the liquid crystal rotation of the liquid crystal layer 360 and a micro-led control electrode (not shown) for controlling the light emitting brightness of the micro-leds 321, 322, 323.
The grating layer 330 can control a plurality of light rays (not shown) generated by the micro light emitting diodes 321, 322, 323 of the pixel region, and the light rays partially penetrate through the first display surface 341 and partially reflect to the second display surface 342. Therefore, the effect of controlling the display direction (front, back or both) can be achieved, and the volume of the whole minitype LED transparent display 300 can be reduced.
The liquid crystal control electrode controls the rotation of the liquid crystal by an electric field to determine the polarization degree of the light of the micro-unit 320, so as to adjust the degree of the grating layer 330 reflecting the polarized light. Therefore, double-sided display or single-sided display can be flexibly set according to the requirements of users, and the display brightness of the double-sided display can be adaptively adjusted.
It should be noted that the liquid crystal control electrodes may also be disposed on two sides of the liquid crystal layer 360, that is, on the substrate 310 and the surface of the grating layer 330 facing the liquid crystal layer 360.
The liquid crystal layer 360 is located between the substrate 310 and the grating layer 330, and covers the micro unit 320. A plurality of spacers (not shown) are disposed on the substrate 310 for controlling and maintaining the thickness of the liquid crystal layer 360, which is a common knowledge of a common liquid crystal panel and will not be described herein. Specifically, the liquid crystal layer 360 is used to change the refractive index of light and control the transmission and reflection of light with specific polarization. The thickness of the liquid crystal layer 360 is preferably no more than 2 times the height of the micro light emitting diodes 321, 322, 323, but higher than the micro light emitting diodes 321, 322, 323. When the thickness of the liquid crystal layer 360 is greater than 2 times the height of the micro light emitting diodes 321, 322, 323, the external electric field must be enhanced to rotate the liquid crystal, and the light transmittance is also reduced; when the thickness of the liquid crystal layer 360 is insufficient, the liquid crystal layer 360 cannot cover the micro light emitting diodes 321, 322, 323.
In addition, the structure and the arrangement relationship of the other elements in the embodiment of fig. 3 are the same as those in the embodiment of fig. 1, and will not be further described herein.
Referring to fig. 4, a schematic diagram of a micro led transparent display 400 according to still another embodiment of the invention is shown. As shown in fig. 4, the micro led transparent display 400 has a first display surface 441 and a second display surface 442 opposite to each other, and includes a substrate 410, a plurality of pixel regions (not shown), a planarization layer 450 and at least one grating layer 430, wherein the first display surface 441 and the second display surface 442 are located on two opposite sides of the substrate 410.
The pixel region array is disposed on the substrate 410, each pixel region is disposed with at least one micro unit 420 as a self-emitting light source, and each pixel region includes a plurality of micro light emitting diodes. In more detail, each of the micro units 420 includes a plurality of micro light emitting diodes, and the micro light emitting diodes are electrically connected to the substrate 410. In the embodiment of fig. 4, the micro unit 420 includes three micro light emitting diodes 421, 422, 423, wherein the micro light emitting diodes 421, 422, 423 are respectively a red micro light emitting diode, a green micro light emitting diode, and a blue micro light emitting diode, that is, the micro light emitting diodes 421, 422, 423 respectively emit red light, green light, and blue light, but the arrangement order is not limited to the embodiment of fig. 4.
The grating layer 430 is disposed on the micro unit 420, and the micro leds 421, 422, 423 are disposed between the grating layer 430 and the substrate 410. In the embodiment of fig. 4, the grating layer 430 includes an electrochromic layer 431 and an electrode structure 432, wherein the electrode structure 432 sandwiches the electrochromic layer 431. Furthermore, the electrochromic layer 431 may be made of metal oxide, such as titanium oxide, and is used to control the degree of reflected light. The grating layer 430 can control a plurality of light rays (not shown) generated by the micro light emitting diodes 421, 422, 423 in the pixel region, and the light rays partially penetrate through the first display surface 441 and partially reflect to the second display surface 442. Therefore, the effect of controlling the display direction (front, back or both) can be achieved, and the volume of the whole micro light-emitting diode transparent display 400 can be reduced.
The electrode structure 432 includes an upper electrode pattern 432a and a lower electrode pattern 432b, the electrochromic layer 431 is disposed between the upper electrode pattern 432a and the lower electrode pattern 432b, and the electric field generated by the upper electrode pattern 432a and the lower electrode pattern 432b controls the arrangement of the electrochromic layer 431 for adjusting the degree of light transmission and reflection. Therefore, double-sided display or single-sided display can be flexibly set according to the requirements of users, and the display brightness of the double-sided display can be adaptively adjusted. Furthermore, the electrode structure 432 is a transparent conductive layer, and the upper electrode pattern 432a and the lower electrode pattern 432b can be a whole conductive film or patterned according to the pixel region position.
The flat layer 450 is located between the substrate 410 and the grating layer 430 and covers the micro light emitting diodes 421, 422, 423, and the flat layer 450 is an optical adhesive layer, wherein the optical adhesive layer has optical transparency and can be made of polypropylene, but not limited thereto.
In addition, the structure and the arrangement relationship of the other elements in the embodiment of fig. 4 are the same as those in the embodiment of fig. 1, and will not be further described herein.
Referring to fig. 5, a schematic diagram of a micro light emitting diode transparent display 500 according to another embodiment of the invention is shown. As shown in fig. 5, the micro led transparent display 500 has a first display surface 541 and a second display surface 542 opposite to each other, and includes a substrate 510, a plurality of pixel regions 511, a flat layer 550, a first grating layer 530 and a second grating layer 570, wherein the first display surface 541 and the second display surface 542 are located on two opposite sides of the substrate 510.
The pixel regions 511 are arranged on the substrate 510 in an array, each pixel region 511 is provided with at least one micro unit 520 as a self-emitting light source, and each pixel region 511 comprises a plurality of micro light emitting diodes. In more detail, each micro unit 520 includes a plurality of micro light emitting diodes, and the micro light emitting diodes are electrically connected to the substrate 510. In the embodiment of fig. 5, the micro-unit 520 includes three micro-leds 521, 522, and 523, which are red micro-leds, green micro-leds, and blue micro-leds, respectively, that is, the micro-leds 521, 522, and 523 emit red light, green light, and blue light, respectively, but the arrangement order is not limited to the disclosure of the embodiment of fig. 5.
One of the major differences between the micro led transparent display 500 of the embodiment in fig. 5 and the micro led transparent display 100 of the embodiment in fig. 1 lies in the number of the grating layers, wherein the number of the grating layers of the micro led transparent display 500 of the embodiment in fig. 5 is two, and is the first grating layer 530 and the second grating layer 570, respectively. The first grating layer 530 and the second grating layer 570 are respectively disposed on two opposite sides of the substrate 510, and the micro light emitting diodes 521, 522, and 523 are located between the first grating layer 530 and the second grating layer 570. Further, the material of the first grating layer 530 and the material of the second grating layer 570 may be the same, and the first grating layer 530 and the second grating layer 570 may both be reflective dye liquid crystal or absorptive dye liquid crystal. In the embodiment of fig. 5, the first grating layer 530 and the second grating layer 570 are absorption-type dye liquid crystals, but not limited thereto.
In the embodiment of fig. 5, the first grating layer 530 includes a dyed liquid crystal 531 and an electrode structure 532, and the second grating layer 570 includes a dyed liquid crystal 571 and an electrode structure 572, wherein the electrode structure 532 clamps the dyed liquid crystal 531 and the electrode structure 572 clamps the dyed liquid crystal 571.
Specifically, the first grating layer 530 controls whether the light L of the micro light emitting diodes 521, 522, 523 in the pixel region 511 can penetrate through the first display surface 541 by using the electrode structure 532 in a pixel region unit. Similarly, the second grating layer 570 controls whether the light L of the micro leds 521, 522, and 523 in the pixel region 511 can penetrate the second display surface 542 by the electrode structure 572 in the unit of the pixel region 511.
The dye liquid crystals 531 and 571 between the pixel regions 511 allow the light L to pass through and not be absorbed, and maintain the transparency of the transparent display 500. Further, the electrode structure 532 includes an upper electrode pattern 532a and a lower electrode pattern 532b, and the dyeing liquid crystal 531 is located between the upper electrode pattern 532a and the lower electrode pattern 532 b; the electrode structure 572 includes an upper electrode pattern 572a and a lower electrode pattern 572b, and the dye liquid crystal 571 is located between the upper electrode pattern 572a and the lower electrode pattern 572 b. The arrangement of the dyed liquid crystals 531 and 571 can be controlled by the electric fields generated by the upper electrode patterns 532a and 572a and the lower electrode patterns 532b and 572b, respectively, to adjust the degree of absorption of the light L. In the embodiment of fig. 5, the electrode structures 532 and 572 are disposed at positions corresponding to the positions of the pixel regions 511.
The planarization layer 550 is located between the substrate 510 and the first grating layer 530 and covers the micro light emitting diodes 521, 522, and 523, and the planarization layer 550 is an optical adhesive layer, wherein the optical adhesive layer has optical transparency and can be made of polypropylene, but not limited thereto.
In addition, the structure and the arrangement relationship of the other elements in the embodiment of fig. 5 are the same as those in the embodiment of fig. 1, and will not be further described herein.
In summary, the transparent display of the micro light emitting diode of the present invention can simultaneously consider transparency and brightness, and reduce the volume of the whole transparent display of the micro light emitting diode. Furthermore, the effect of controlling the display direction (front, back or both) can be achieved. Furthermore, the micro led transparent display of the present invention can be applied to outdoor signs, display windows, and even window glass, but is not limited to the above applications. Therefore, the effects of double-sided display, transparency and panel cost reduction can be achieved.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (13)
1. A micro light emitting diode transparent display is characterized in that the display is provided with a first display surface and a second display surface which are opposite, and the display comprises:
the first display surface and the second display surface are positioned on two opposite sides of the substrate;
the array is arranged on the substrate, each pixel area comprises a plurality of micro light-emitting diodes, and the micro light-emitting diodes are electrically connected with the substrate; and
the micro light-emitting diode is positioned between the at least one grating layer and the substrate;
the at least one grating layer can control a plurality of light rays generated by the micro light emitting diode of the pixel area, and the light rays partially penetrate out of the first display surface and partially reflect to the second display surface.
2. The transparent micro-led display of claim 1, wherein the at least one grating layer is a dyed liquid crystal layer, an electrophoretic layer, or an electrochromic layer.
3. The micro light-emitting diode transparent display of claim 2, further comprising:
and the flat layer is positioned between the substrate and the at least one grating layer and covers the micro light-emitting diode.
4. The transparent micro-LED display as claimed in claim 3, wherein the height of the planarization layer is L1, and the height of each micro-LED is L2, which satisfies the following condition:
10≥L1/L2>5。
5. the transparent micro led display according to claim 1, wherein the area of the micro leds in each pixel region is 10% to 25%.
6. The transparent micro-led display of claim 1, wherein the at least one grating layer is a reflective polarizer.
7. The micro light-emitting diode transparent display of claim 6, further comprising:
and the liquid crystal layer is positioned between the substrate and the at least one grating layer and covers the micro light-emitting diode.
8. The transparent display of claim 1, wherein the pitch between any two adjacent pixel regions is P, which satisfies the following condition:
p is more than or equal to 100 microns.
9. The transparent micro-led display of claim 1, wherein the at least one grating layer comprises an electrode structure for adjusting the degree to which the at least one grating layer controls the transmission and reflection of light.
10. The transparent micro-led display of claim 9, wherein the electrode structures are transparent conductive layers.
11. The transparent display as claimed in claim 1, wherein each pixel region comprises three micro light emitting diodes, and the three micro light emitting diodes respectively emit blue light, green light and red light.
12. The transparent display as claimed in claim 1, wherein the at least one grating layer is two, and the two grating layers are a first grating layer and a second grating layer, the first grating layer and the second grating layer are respectively disposed on two opposite sides of the substrate, and the micro light emitting diode is disposed between the first grating layer and the second grating layer.
13. The transparent micro-led display of claim 12, wherein the first grating layer is made of the same material as the second grating layer and is a reflective-type dyed liquid crystal or an absorptive-type dyed liquid crystal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11934065B1 (en) | 2023-02-15 | 2024-03-19 | AUO Corporation | Display device |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002052338A1 (en) * | 2000-12-25 | 2002-07-04 | Sony Corporation | Image display |
| JP2002333615A (en) * | 2001-05-08 | 2002-11-22 | Toppan Printing Co Ltd | Semitransmission type color liquid crystal display device |
| CN1580885A (en) * | 2003-08-07 | 2005-02-16 | 友达光电股份有限公司 | Translucent liquid crystal display panel |
| CN1690785A (en) * | 2004-04-08 | 2005-11-02 | 京东方显示器科技公司 | Liquid crystal display device having bilateral display function |
| CN1834754A (en) * | 2005-03-16 | 2006-09-20 | 欧姆龙株式会社 | Double-side display device and surface light source device |
| JP2006276111A (en) * | 2005-03-28 | 2006-10-12 | Sanyo Epson Imaging Devices Corp | Liquid crystal display device and electronic apparatus |
| CN103309114A (en) * | 2012-03-16 | 2013-09-18 | 元太科技工业股份有限公司 | Electrophoretic display device |
| CN103345884A (en) * | 2013-06-26 | 2013-10-09 | 京东方科技集团股份有限公司 | Double-face display device and preparation method thereof |
| WO2014190719A1 (en) * | 2013-05-31 | 2014-12-04 | 京东方科技集团股份有限公司 | Double-side display panel and manufacturing method thereof |
| JP2015210298A (en) * | 2014-04-24 | 2015-11-24 | スタンレー電気株式会社 | Double-sided liquid crystal display device and backlight unit |
| CN106707583A (en) * | 2016-12-28 | 2017-05-24 | 武汉华星光电技术有限公司 | Display device |
| CN107167943A (en) * | 2017-07-20 | 2017-09-15 | 京东方科技集团股份有限公司 | Display panel and display device |
| WO2017188715A2 (en) * | 2016-04-28 | 2017-11-02 | 크루셜텍 (주) | Light-emitting fingerprint recognition panel capable of applying under glass and fingerprint recognition display apparatus comprising same |
| CN206757205U (en) * | 2017-04-01 | 2017-12-15 | 北京京东方显示技术有限公司 | A kind of 3 d display and display device |
| CN107680989A (en) * | 2017-07-26 | 2018-02-09 | 友达光电股份有限公司 | Double-Sided Display And Manufacturing Method Thereof |
| CN108231849A (en) * | 2018-01-03 | 2018-06-29 | 京东方科技集团股份有限公司 | display device, device and display control method |
| CN108873418A (en) * | 2018-06-08 | 2018-11-23 | 友达光电股份有限公司 | Display device with adjustable light intensity direction design |
| EP3407396A1 (en) * | 2016-01-19 | 2018-11-28 | Mitsubishi Electric Corporation | Led display panel, led display apparatus, and method for manufacturing led display panel |
| CN109031763A (en) * | 2018-08-30 | 2018-12-18 | 深圳市华星光电技术有限公司 | A kind of display |
| CN110850621A (en) * | 2019-06-17 | 2020-02-28 | 錼创显示科技股份有限公司 | Display device |
-
2020
- 2020-11-20 CN CN202011308198.1A patent/CN112419909B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002052338A1 (en) * | 2000-12-25 | 2002-07-04 | Sony Corporation | Image display |
| JP2002333615A (en) * | 2001-05-08 | 2002-11-22 | Toppan Printing Co Ltd | Semitransmission type color liquid crystal display device |
| CN1580885A (en) * | 2003-08-07 | 2005-02-16 | 友达光电股份有限公司 | Translucent liquid crystal display panel |
| CN1690785A (en) * | 2004-04-08 | 2005-11-02 | 京东方显示器科技公司 | Liquid crystal display device having bilateral display function |
| CN1834754A (en) * | 2005-03-16 | 2006-09-20 | 欧姆龙株式会社 | Double-side display device and surface light source device |
| JP2006276111A (en) * | 2005-03-28 | 2006-10-12 | Sanyo Epson Imaging Devices Corp | Liquid crystal display device and electronic apparatus |
| CN103309114A (en) * | 2012-03-16 | 2013-09-18 | 元太科技工业股份有限公司 | Electrophoretic display device |
| WO2014190719A1 (en) * | 2013-05-31 | 2014-12-04 | 京东方科技集团股份有限公司 | Double-side display panel and manufacturing method thereof |
| CN103345884A (en) * | 2013-06-26 | 2013-10-09 | 京东方科技集团股份有限公司 | Double-face display device and preparation method thereof |
| JP2015210298A (en) * | 2014-04-24 | 2015-11-24 | スタンレー電気株式会社 | Double-sided liquid crystal display device and backlight unit |
| EP3407396A1 (en) * | 2016-01-19 | 2018-11-28 | Mitsubishi Electric Corporation | Led display panel, led display apparatus, and method for manufacturing led display panel |
| WO2017188715A2 (en) * | 2016-04-28 | 2017-11-02 | 크루셜텍 (주) | Light-emitting fingerprint recognition panel capable of applying under glass and fingerprint recognition display apparatus comprising same |
| CN106707583A (en) * | 2016-12-28 | 2017-05-24 | 武汉华星光电技术有限公司 | Display device |
| CN206757205U (en) * | 2017-04-01 | 2017-12-15 | 北京京东方显示技术有限公司 | A kind of 3 d display and display device |
| CN107167943A (en) * | 2017-07-20 | 2017-09-15 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN107680989A (en) * | 2017-07-26 | 2018-02-09 | 友达光电股份有限公司 | Double-Sided Display And Manufacturing Method Thereof |
| CN108231849A (en) * | 2018-01-03 | 2018-06-29 | 京东方科技集团股份有限公司 | display device, device and display control method |
| CN108873418A (en) * | 2018-06-08 | 2018-11-23 | 友达光电股份有限公司 | Display device with adjustable light intensity direction design |
| CN109031763A (en) * | 2018-08-30 | 2018-12-18 | 深圳市华星光电技术有限公司 | A kind of display |
| CN110850621A (en) * | 2019-06-17 | 2020-02-28 | 錼创显示科技股份有限公司 | Display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11934065B1 (en) | 2023-02-15 | 2024-03-19 | AUO Corporation | Display device |
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|---|---|
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