TWI690749B - Display device and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a display device and manufacturing method thereof. The display device comprises a first substrate, a second substrate, a glue layer and a display panel. The second substrate is disposed above the first substrate. The glue layer is disposed between the first substrate and the second substrate. An accommodating space is formed between the glue layer, the first substrate and the second substrate. The quantum dot layer is formed by injecting a g1ue including quantum dots into the accommodating space by an injecting process. The display panel is disposed on the surface of the second substrate opposite to the first substrate. The manufacturing method of the display device of the present invention prevents from a question with quantum dot failure due to the glue including quantum dot exposed under high temperature or outside environment to increase the display effort of the display device.

Description

Display device and manufacturing method thereof

The invention relates to the technical field of a display, in particular to a display device and a manufacturing method thereof.

Generally speaking, quantum dots are a semiconductor nanostructure with a relatively small volume, and quantum dot materials have a considerable influence on the display field. When quantum dots are excited by considerable energy, they can emit light of the corresponding wavelength, so they can It emits more pure RGB three primary colors of light, and the purer the three primary colors of light, the wider and wider the color gamut of the display, so it can achieve a higher color gamut than general monitors.

At present, quantum dot materials are also widely used in backlight technology. The advantage of quantum dot backlight technology is that the energy intensity of the excited light will be better than that of the general backlight using fluorescent powder. The blue LED in the backlight can illuminate different sizes of quantum The dots excite higher-energy red and green light, and then combine with the blue light emitted by the LED itself to form white light. Common technologies for quantum dots used in backlights include On Chip (LED) and On Surface (optical film).

When the quantum dot material is exposed to high temperature, oxygen, and moisture for a period of time, it will cause the quantum dot material to change and cause the quantum dot material to fail, and it will affect the energy of the excited light and reduce the color gamut effect. At present, On Chip (LED) has packaging technology difficulties and On Surface (optical film) edge quantum dots are prone to failure and other shortcomings, so how to prevent the quantum dot material from contacting the external environment and being affected by high temperature is an important problem that must be solved at present.

In view of this, the present invention provides a display device and a manufacturing method thereof, by using the injection process of the present invention to inject a glue material containing quantum dots into the accommodating space of the display device, to avoid exposing the glue material containing quantum dots to a high temperature environment or outside The problem of quantum dot failure under the environment effectively improves the display effect of the display device.

The invention provides a method for manufacturing a display device, which includes: providing a first substrate; forming a sealant layer on the first substrate; disposing a second substrate on the sealant layer, with a frame between the first substrate and the second substrate The adhesive layer forms an accommodating space, and the frame adhesive layer has an injection port that communicates with the accommodating space; an adhesive material containing quantum dots is injected into the accommodating space through the injection port through an injection process to form a Quantum dot layer; sealing the injection port; and providing a display panel, and the display panel is disposed on a surface of the second substrate opposite to the first substrate.

The present invention provides another method for manufacturing a display device, including: providing a first substrate; forming a frame glue layer on the first substrate; injecting a glue material containing quantum dots into the frame glue layer by an injection process, Forming a quantum dot layer; disposing a second substrate on the sealant layer; and providing a display panel, and disposing the display panel on a surface of the second substrate opposite to the first substrate.

The present invention provides yet another display device, including: a first substrate; a second substrate, disposed on the first substrate; a sealant layer, disposed between the first substrate and the second substrate, wherein the first substrate and the second substrate A containing space is formed between the two substrates by a sealant layer; a quantum dot layer is formed in the containing space, wherein the quantum dot layer is formed by injecting a glue material containing quantum dots into the containing space by an injection process; And a display panel disposed on a surface of the second substrate opposite to the first substrate.

The invention provides yet another display device, comprising: a first substrate; a second substrate, which is arranged on the first substrate; and a plurality of sealant layers, which are arranged between the first substrate and the second substrate, wherein the first substrate and the second substrate A plurality of accommodation spaces are formed between the two substrates with the sealant layers; and a plurality of sub-dot layers are formed in the accommodation spaces, respectively, wherein each quantum dot layer is composed of a glue material containing quantum dots The injection process is formed by injecting the accommodating space.

In order to have a further understanding and understanding of the features of the present invention and the achieved effects, only examples and detailed descriptions are supplemented, the description is as follows:

Please refer to FIG. 1, which is a schematic diagram of a display device according to a first embodiment of the present invention. As shown in the figure, this embodiment provides a display device 1. The display device 1 of this embodiment includes a light guide structure 10 and a display panel 11, The display panel 11 is disposed on the light guide structure 10. The light guide structure 10 includes a first substrate 101, a sealant layer 102, a second substrate 103, a quantum dot layer 104, and a light emitting module 105. The sealant layer 102 is disposed on the first substrate 101, and the second substrate 103 is disposed on the sealant On the layer 102, the sealant layer 102 is disposed along the periphery of the first substrate 101 and the second substrate 103, and the sealant layer 102 is formed between the first substrate 101 and the second substrate 103 to form an accommodating space 1021, and the accommodating space 1021 Located within the frame layer 102. The quantum dot layer 104 is disposed in the accommodating space 1021, which is mainly formed by injecting a glue material containing quantum dots into the accommodating space 1021 through an injection process, which is a suction injection method or a drop injection method. The light guide structure 10 of this embodiment is a lateral light-emitting light guide structure, so the light-emitting module 105 is disposed on the side of the first substrate 101, that is, the light source emitted by the light-emitting module 105 enters from the side of the first substrate 101. The display panel 11 is disposed on the surface of the second substrate 103 opposite to the first substrate 101. When the display device 1 of this embodiment is in use, the blue light emitted by the light emitting module 105 enters from the side of the first substrate 101, and the blue light passes through the quantum dot layer 104 and illuminates the quantum dots in the quantum dot layer 104 to generate red light With green light. The excited red light and green light combine with the blue light of the light emitting module 105 to form white light. The materials of the first substrate 101 and the second substrate 103 are made of glass to improve the transmission efficiency and light guide efficiency of the light source. The thickness of the first substrate 101 in this embodiment is greater than the thickness of the second substrate 103, so that most of the light sources of the light emitting module 105 can enter the first substrate 101 and pass through the quantum dot layer 104, reducing the light source not passing through the quantum dot layer Opportunity of 104 to avoid the problems of light leakage and color variation of the light source in the display device 1. In this embodiment, the thickness of the first substrate 101 is between 1 mm and 2.5 mm, and the thickness of the second substrate 103 is between 0.3 mm and 0.4 mm.

Please also refer to FIG. 2, which is a manufacturing flow chart of the display device according to the first embodiment of the present invention. As shown in the figure, the display device 1 of this embodiment is manufactured by first performing step S10 to provide the first substrate 101. Next, step S11 is performed to form a sealant layer 102 on the first substrate 101. Then, step S12 is executed to set the second substrate 103 on the sealant layer 102. The sealant layer 102 is formed between the first substrate 101 and the second substrate 103 to form an accommodating space 1021. The sealant layer 102 has an injection port 1022 and an injection port 1022 It communicates with the accommodating space 1021. Next, step S13 is executed, and the glue material containing quantum dots is injected into the accommodating space 1021 through the injection port 1022 in an injection process, so that the quantum dot layer 104 is formed in the accommodating space 1021. In the injection process of this embodiment, the structure composed of the first substrate 101, the sealant layer 102 and the second substrate 103 is placed in the adhesive material, the pressure in the accommodating space 1021 is negative, and the adhesive material passes through by siphoning The injection port 1022 is injected into the accommodation space 1021. Before step S13, the sealant layer 102 needs to be heated by heating to make the sealant layer 102 and the first substrate 101 and the second substrate 103 adhere to each other and solidify, so as to ensure that the first substrate is injected into the accommodating space 1021 101. The sealant layer 102 and the second substrate 103 will not be separated. The first substrate 101, the sealant layer 102 and the second substrate 103 have good sealing properties to seal the quantum dot layer 104 in the accommodating space 1021. Inner and isolated quantum dot layer 104 is in contact with the external environment, so there is no need to additionally set a sealing agent and a hygroscopic agent in the accommodating space 1021. The material of the sealant layer 102 is a thermosetting epoxy resin. The material of the above adhesive material includes a thermosetting material or a photocuring material, and the thermosetting material or the photocurable material is silicone or epoxy resin, which can increase the strength of the quantum dot layer 104 to the external environment and increase the structural strength of the quantum dot layer 104 , Efficiency and stability. The particle size of the quantum dots contained in the rubber material is between 10 nm and 15 nm, the thickness of the quantum dot layer 104 is between 5 μm and 20 μm, and the thickness of the quantum dot layer 104 depends on the concentration of the quantum dots Definitely, it also means that the thickness of the sealant layer 102 depends on the thickness of the quantum dot layer 104 to be formed, and the thickness of the sealant layer 102 is between 5 μm and 20 μm.

After the adhesive material fills the accommodating space 1021, step S14 is performed to seal the injection port 1022, wherein the injection port 1022 is sealed by filling the injection port 1022 with a resin adhesive, and curing the resin adhesive after filling to seal the injection port 1022. Then step S15 is executed to set the display panel 11 on the surface of the second substrate 103 relative to the first substrate 101. Finally, step S16 is executed to set the light emitting module 105 on the side of the first substrate 101 so that the light emitting module 105 emits a light source toward the side of the first substrate 101.

Please refer to FIGS. 3 and 4, which are a schematic diagram and a manufacturing flowchart of a display device according to a second embodiment of the present invention. As shown in the figure, the manufacturing method of the display device of this embodiment is different from the manufacturing method of the above embodiment, Method of injecting glue. In the display device 1 of this embodiment, step S20 is first performed to produce the first substrate 101. Next, step S21 is executed to form the sealant layer 102 on the first substrate 101. Then, step S22 is executed, and the glue material containing quantum dots is injected into the accommodating space 1021 of the sealant layer 102 through an injection process to form the quantum dot layer 104 in the accommodating space 1021. Next, step S23 is executed to set the second substrate 103 on the sealant layer 102 to seal the accommodating space 1021 of the sealant layer 102. Then step S24 is executed to set the display panel 11 on the surface of the second substrate 103 relative to the first substrate 101. Finally, step S25 is executed to set the light-emitting module 105 on the side of the first substrate 101 so that the light-emitting module 105 emits a light source toward the side of the first substrate 101.

In the implantation process of this embodiment, before the second substrate 103 is disposed on the sealant layer 102, the adhesive material is first injected into the accommodating space 1021, and after the quantum dot layer 104 is formed in the accommodating space 1021, the second substrate 103 The sealant layer 102 is disposed to close the accommodating space 1021. Therefore, it is not necessary to heat the sealant layer 102 by a heating method before the implantation process, so that the sealant layer 102 and the first substrate 101 and the second substrate 103 are bonded and cured. The material of the sealant layer 102 of this embodiment is a photo-curable epoxy resin. In other words, the sealant layer 102 of the display device obtained by completing the above steps is irradiated with ultraviolet light to cure the sealant layer 102 and the first The substrate 101 and the second substrate 103 are bonded together.

Please refer to FIG. 5, which is a schematic diagram of a display device according to a third embodiment of the present invention. As shown, the display device 1 of this embodiment differs from the display device of the above embodiment in that the second substrate 103 of this embodiment An extension portion 1031 extends from the side, the extension portion 1031 protrudes from the sealant layer 102, and a light shielding layer 1032 is formed on the surface of the extension portion 1031 facing the first substrate 101, wherein the light shielding layer 1032 is a black tape or black colloid. The light-emitting module 105 is located below the extension portion 1031, and the light-shielding layer 1032 faces the light-emitting module 105. When the light-emitting module 105 emits a light source toward the side of the first substrate 101, the light-shielding layer 1032 can absorb and shield the light-emitting module 105 The light source can prevent the light source from passing through the quantum dot layer 104 and avoid affecting the display effect of the display device 1.

Please refer to FIG. 6, which is a schematic diagram of a display device according to a fourth embodiment of the present invention. As shown, the display device 1 of this embodiment differs from the display device of the third embodiment in that the display device 1 of this embodiment The first substrate 101 is provided with a plurality of first relief patterns 1011 relative to the surface of the second substrate 103, and the second substrate 103 is provided with a plurality of second relief patterns 1033 relative to the surface of the first substrate 101, the first relief patterns 1011 and The second relief patterns 1033 can change the propagation path of the light source to diverge the light source. The first embossed patterns 1011 and the second embossed patterns 1033 are formed on the first substrate 101 and the second substrate 103 by printing, bumping, or laser. The first embossments of this embodiment The pattern 1011 and the second embossed patterns 1033 can be applied to the display devices of the first and second embodiments, which will not be repeated here.

Please refer to FIG. 7, which is a schematic diagram of a display device according to a fifth embodiment of the present invention. As shown, the display device of this embodiment differs from the display device of the fourth embodiment in that the display device 1 of this embodiment is straight down In the display device, that is, the light-emitting module 105 is provided with a side of the first substrate 101 having the first relief patterns 1011, that is, corresponding to the bottom surface of the first substrate 101, and adjacent to the first relief patterns 1011. The installation position of the light emitting module 105 of this embodiment can also be applied to the display devices of other embodiments, which will not be repeated here.

Please refer to FIGS. 8 and 9, which are schematic and cross-sectional views of a display device according to a sixth embodiment of the present invention; as shown, the display device 1 of this embodiment differs from the display device of the first embodiment in that this implementation The display device 1 of the example has a plurality of light guide structures in the first embodiment. The display device 1 of this embodiment has a first substrate 101, a plurality of sealant layers 102, a second substrate 103, and a plurality of sub-dot layers 104. The layer 102 is disposed on the first substrate 101 and arranged in a matrix. The second substrate 103 is disposed on the sealant layers 102, so that the sealant layers 102 form a plurality of accommodating spaces 1021 between the first substrate 101 and the second substrate 103, and each accommodating space 1021 is located in a corresponding frame Within the glue layer 102. The quantum dot layers 104 are respectively disposed in corresponding accommodation spaces 1021. The above structure is only a semi-finished product of the display device 1 of this embodiment. When the display device 1 is to be manufactured, it must be cut according to the position of the plurality of sealant layers 102 to form the light guide structures. Each light guide structure has a first The substrate 101, the sealant layer 102, the second substrate 103, and the quantum dot layer 104, and then the display panel and the light-emitting module can be provided to form the display device 1, which will not be repeated here.

In summary, the present invention discloses a display device and a manufacturing method thereof. The display device of the present invention is manufactured by the manufacturing method provided by the present invention. The adhesive material containing quantum dots is sealed between two substrates to avoid containing quantum dots Quantum dot failure phenomenon occurs when the rubber material is exposed to high temperature and external environment. A glass material is used to seal the adhesive material containing quantum dots, which effectively improves the penetration efficiency and light guide efficiency of the light source.

Although the present invention is disclosed as the foregoing embodiments, it is not intended to limit the present invention. Without departing from the spirit and scope of the present invention, all modifications and retouching are within the scope of patent protection of the present invention. For the protection scope defined by the present invention, please refer to the attached patent application scope.

1 Display device 10 Light guide structure 101 First substrate 1011 First embossed pattern 102 Bead layer 1021 Accommodating space 1022 Potting pattern 103 Second layer 10 Light shielding layer 10 Extension layer 32 Module 11 display panel

FIG. 1 is a schematic diagram of a display device according to a first embodiment of the invention. FIG. 2 is a manufacturing flowchart of the display device according to the first embodiment of the invention. 3 is a schematic diagram of a display device according to a second embodiment of the invention. FIG. 4 is a manufacturing flowchart of a display device according to a second embodiment of the invention. 5 is a schematic diagram of a display device according to a third embodiment of the invention. 6 is a schematic diagram of a display device according to a fourth embodiment of the invention. 7 is a schematic diagram of a display device according to a fifth embodiment of the invention. 8 is a schematic diagram of a display device according to a sixth embodiment of the invention. 9 is a cross-sectional view of a display device according to a sixth embodiment of the invention.

1 Display device 10 Light guide structure 101 Light-emitting structure 101 First substrate 102 Accommodating space 1022 Display panel 103 Entrance panel 105 Light-emitting module layer 11 Light-emitting diode layer 11

Claims (22)

A manufacturing method of a display device includes: providing a first substrate; forming a sealant layer on the first substrate; disposing a second substrate on the sealant layer, between the first substrate and the second substrate The sealant layer forms an accommodating space, and the sealant layer has an injection port that communicates with the accommodating space; a glue material containing quantum dots is injected into the accommodating space through the injection port through an injection process In order to form a quantum dot layer; seal the injection port; and provide a display panel, and the display panel is disposed on a surface of the second substrate opposite to the first substrate. The manufacturing method of the display device according to claim 1, further comprising: setting a light emitting module on the side or bottom of the first substrate. The manufacturing method of the display device according to claim 2, further comprising: arranging a plurality of first relief patterns on a surface of the first substrate opposite to the second substrate; and on the second substrate opposite to the first A plurality of second relief patterns are arranged on one surface of the substrate. The method for manufacturing a display device according to claim 2 or 3, further comprising: an extension portion extending from the side of the second substrate, and the extension portion protruding from the sealant layer; and facing the extension portion A light-shielding layer is formed on a surface of the first substrate. The method for manufacturing a display device according to claim 1, wherein the material of the sealant layer is a thermosetting epoxy resin. The method for manufacturing a display device according to claim 1, wherein the material of the adhesive material includes a thermosetting material or a photocurable material, the thermosetting material or the photocurable material is silicone or epoxy resin, and the particle size of the quantum dot It is 10-15 nm, and the thickness of the quantum dot layer is 5-20 microns. A manufacturing method of a display device includes: providing a first substrate; forming a sealant layer on the first substrate; injecting a glue material containing quantum dots into the sealant layer by an injection process to form a A quantum dot layer; setting a second substrate on the sealant layer; and providing a display panel, and setting the display panel on a surface of the second substrate opposite to the first substrate. The manufacturing method of the display device according to claim 7, further comprising: setting a light emitting module on the side or bottom of the first substrate. The manufacturing method of the display device according to claim 8, further comprising: arranging a plurality of first relief patterns on a surface of the first substrate opposite to the second substrate; and opposite the first substrate on the second substrate A plurality of second relief patterns are arranged on one surface of the substrate. The method for manufacturing a display device according to claim 8 or 9, further comprising: an extension portion extending on the side of the second substrate, and the extension portion protruding from the frame layer; and A light-shielding layer is formed on a surface of the extension portion facing the first substrate. The method for manufacturing a display device according to claim 7, wherein the material of the sealant layer is photo-cured epoxy resin. The method for manufacturing a display device according to claim 7, wherein the material of the adhesive material includes a thermosetting material or a photocurable material, the thermosetting material or the photocurable material is silicone or epoxy resin, and the particle size of the quantum dot It is 10-15 nm, and the thickness of the quantum dot layer is 5-20 microns. A display device includes: a first substrate; a second substrate, disposed on the first substrate; a sealant layer, disposed between the first substrate and the second substrate, wherein the first substrate and the second substrate The sealant layer is formed between the second substrates to form an accommodating space; a quantum dot layer is formed in the accommodating space, wherein the quantum dot layer is to inject a glue material containing quantum dots into the A space is formed; and a display panel is disposed on a surface of the second substrate opposite to the first substrate. The display device according to claim 13, further comprising: a light emitting module disposed on the side or bottom of the first substrate. The display device according to claim 14, further comprising: a plurality of first relief patterns on a surface of the first substrate opposite to the second substrate; and a plurality of second relief patterns on the second substrate On a surface opposite to the first substrate. The display device according to claim 14 or 15, wherein the second substrate further includes an extension portion, the extension portion is located on a side of the second substrate and protrudes from the sealant layer, and the display module further includes a A light shielding layer, which is disposed on a surface of the extension portion facing the first substrate. The display device according to claim 13, wherein the material of the glue frame layer is thermally cured epoxy resin or light cured epoxy resin. The display device according to claim 13, wherein the material of the adhesive material includes a thermosetting material or a photocurable material, the thermosetting material or the photocurable material is silicone or epoxy resin, and the particle size of the quantum dot is 10~ At 15 nm, the thickness of the quantum dot layer is 5-20 microns. A display device includes: a first substrate; a second substrate, disposed on the first substrate; a plurality of sealant layers, disposed between the first substrate and the second substrate, wherein the first substrate and the second substrate A plurality of containing spaces are formed between the second substrates with the sealant layers; a plurality of sub-dot layers are respectively formed in the containing spaces, wherein each of the quantum dot layers is a glue material containing quantum dots to An injection process is formed by injecting the accommodating space; and a display panel is disposed on a surface of the second substrate opposite to the first substrate. The display device according to claim 19, further comprising: a plurality of first relief patterns provided on a surface of the first substrate opposite to the second substrate; and A plurality of second relief patterns are provided on a surface of the second substrate opposite to the first substrate. The display device according to claim 19, wherein the material of the sealant layer is thermally cured epoxy resin or light cured epoxy resin. The display device according to claim 19, wherein the material of the adhesive material includes a thermosetting material or a photocurable material, the thermosetting material or the photocurable material is silicone or epoxy resin, and the particle size of the quantum dot is 10~ At 15 nm, the thickness of the quantum dot layer is 5-20 microns.

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