TW201817053A - Light emitting device combined with electroluminescent device and thermal reaction device including a first module, a second module and an electroluminescent device and capable of achieving the effect of color change - Google Patents

Abstract

The invention discloses a light emitting device combined with an electroluminescent device and a thermal reaction device. The light emitting device comprises a first module, a second module and an electroluminescent device. The electroluminescent device is disposed between the first module and the second module and can be driven by a voltage to generate light and heat. Further, the first module has a thermal reaction device for absorbing heat generated by the electroluminescent device for color change or thermoelectric conversion. In addition, the second module has an air glue layer, which not only has a high light transmittance and but also blocks the heat generated by the electroluminescent device, thereby increasing the heat absorption amount of the thermal responsive device. Moreover, the light generated by the electroluminescent device can form a color mixture when passing through the thermal responsive device, thereby achieving the effect of color change.

Description

   Light emitting device combining electric excitation light element and thermal reaction element   

The present invention relates to the technical field of a light-emitting device, and particularly to a light-emitting device that combines an electrically excited light element and a thermal reaction element.

An electroluminescent device is a device that can emit light by applying a voltage. Due to its ability to emit light, the electro-optic element often becomes part of a display device or a sign. However, the electro-excitation light element generates considerable waste heat due to the applied voltage intensity and the duration of use. Therefore, the display device or kanban often needs to be equipped with an appropriate heat sink to reduce the accumulation of waste heat and improve the electricity Excitation light element life.

Taiwan Patent Nos. 200731847 and 201007050 both disclose that an electrochromic element or a thermochromic element is arranged between two OLEDs (organic electro-optical excitation light elements). After the light emitted by one OLED passes through the electrochromic element or the thermochromic element, it can be mixed with the light of the other OLED. Although the two previous patents disclose that the light generated by the OLED element can be changed in color by passing through the thermochromic element, the heat generated or absorbed by the entire device, especially the heat used to change the thermochromic element And did not disclose how to conduct heat dissipation.

For the heat dissipation design of the electro-optical light element, an external heat sink is usually used, for example, Chinese Patent Nos. CN2696285 and CN1334692. For example, Patent No. CN2696285 discloses a heat dissipation structure of an electrically excited light display element. The heat dissipation structure disclosed in the previous case of the patent is an aluminum plate layer combined with a graphite layer, wherein the graphite layer is further used to combine the electro-optical light emitting element. In this way, the heat generated by the electrically excited light element can be conducted to the aluminum plate layer through the graphite layer to achieve the effect of rapid heat dissipation.

An object of the present invention is to provide a light-emitting device combining an electro-excitation light element and a thermal reaction element, which has the ability to increase the luminous intensity of an electro-excitation light element by adjusting the input voltage, and at the same time, uses the electro-excitation light element Heat causes a physical or chemical change in a thermally responsive element.

In order to achieve the above-mentioned object and effect, the light-emitting device disclosed in the present invention includes a first module, a second module, and an electrically excited light element. The electrical excitation light element is disposed between the first module and the second module and can be driven by a voltage to emit light and generate heat. Further, the first module has a thermal reaction element for absorbing heat generated by the electrically excited light element for color change or thermoelectric conversion. The second module has an air glue layer, which not only has high light transmittance, but also can block heat generated by the electrically excited light element, thereby increasing the heat absorption of the thermal reaction element. Secondly, the light generated by the electrically excited light element can form a color mixture when it penetrates out of the thermal reaction element, thereby achieving the effect of color change.

Secondly, both the first module and the second module have a conductive layer that can be electrically connected to a power source, and the conductive layers of the first module and the second module can be used to guide the voltage to excite the electrical excitation light. Components generate light and heat.

10‧‧‧ the first module

12‧‧‧ the first transparent substrate

14‧‧‧ Thermal Response Element

16‧‧‧ the first conductive layer

20‧‧‧Second Module

22‧‧‧Second transparent substrate

24‧‧‧Air rubber layer

26‧‧‧Second conductive layer

30‧‧‧electrically excited light element

40‧‧‧thermochromic element

42‧‧‧display area

44‧‧‧thermoelectric chip

50‧‧‧ Power

FIG. 1 is a schematic exploded structure diagram of the first embodiment of the present invention.

Fig. 2 is a schematic diagram of the combined structure and use state of the first embodiment of the present invention.

FIG. 3 is a schematic plan view of a thermal reaction element according to a second embodiment of the present invention.

FIG. 4 is a schematic diagram of a combined structure and a use state of the second embodiment of the present invention.

FIG. 5 is a schematic diagram of a combined structure and a use state of the third embodiment of the present invention.

FIG. 6 is a schematic diagram of the combined structure and use state of the fourth embodiment of the present invention.

Please refer to FIG. 1 and FIG. 2, the present invention includes a first module 10, a second module 20 and an electro-optical light element 30. The electro-optic light element 30 is disposed between the first module 10 and the second module 20.

Further, the first module 10 includes a first transparent substrate 12, a thermal reaction element 14 and a first conductive layer 16. The first transparent substrate 12 may be a glass substrate, and the thermally responsive element 14 may be a thermochromic element 40. The thermochromic element 40 is disposed or mounted on one side of the first transparent substrate 12. The first conductive layer 16 may be an indium tin oxide (ITO) transparent conductive film. The first conductive layer 16 can be formed on the other side of the first transparent substrate 12 by a plating method.

The second module 20 includes a second transparent substrate 22, an air adhesive layer 24, and a second conductive layer 26. The second transparent substrate 22 may be a glass substrate, and the air glue layer 24 is a material layer capable of blocking heat insulation and allowing light to pass through. The air glue layer 24 can be coated on one side of the second transparent substrate 22. The second conductive layer 26 can be formed on the other side of the second transparent substrate 22 by a plating method. The second conductive layer 26 may be an indium tin oxide (ITO) transparent conductive film.

The electrically excited light element 30 is disposed between the first module 10 and the second module 20. Furthermore, the first conductive layer 16 is opposite to the second conductive layer 26, and the electrically excited light element 30 is disposed Between the first conductive layer 16 and the second conductive layer 26.

Please refer to FIG. 2 again, the first conductive layer 16 and the second conductive layer 26 are electrically connected to a power source 50. Thus, driven by the voltage introduced by the first conductive layer 16 and the second conductive layer 26, the The electrically excited light element 30 can generate light (as indicated by the arrow symbol) and heat; wherein the heat generated by the electrically excited light element 30 can be blocked by the air glue layer 24 and absorbed by the thermochromic element 40, so The thermal reaction element 14 can generate a thermal change, that is, the thermochromic element 40 generates a color change. Secondly, the light generated by the electrically excited light element 30 can penetrate the air glue layer 24 and the thermochromic element 40.

Since the thermal reaction element 14 may be a thermochromic element 40, the thermochromic element 40 may undergo a color change after absorbing the thermal energy generated by the electrically excited light element 30. In addition, when the light generated by the electroluminescent element 30 (shown by the arrow symbol) penetrates the thermochromic element 40, the color of the light generated by the electroluminescent element 30 and the thermochromic element 40 appear. The color can form a color mixing effect, whereby the present invention has the effect of providing a variety of colors.

According to the functions and functions provided by the first module 10 and the second module 20, the first module 10 may be referred to as a thermal reaction module, and the second module 20 may be referred to as a photothermal separation module.

Please refer to FIG. 3, the thermal response element 14 may include a plurality of the thermochromic elements 40, and the thermochromic element 40 has a display area 42. Each of the thermochromic elements 40 and the display region 42 can form different colors after absorbing heat. Alternatively, the display regions 42 of the two adjacent thermochromic elements 40 may be formed into different colors after absorbing heat by an appropriate arrangement. The display area 42 may include text or graphics.

Please refer to FIG. 3 and FIG. 4. Since the thermal reaction element 14 constituted by the thermochromic element 40 can have a plurality of display regions 42 (see FIG. 3), when the electrically excited light element 30 is When the generated heat is absorbed by the thermal reaction element 14, not only each display region 42 has its specific color, but light rays penetrating the display regions 42 of the thermal reaction element 14 can also take on different colors.

According to the above structural description, the present invention can be designed as a part or all of a display panel, and in particular, the thermal response element 14 composed of the thermochromic element 40 is used as the display surface of the display panel. In this way, the light generated by the electrically excited light element 30 can not only penetrate out of the thermochromic element 40, but also be combined with the color of the thermochromic element 40 when it is heated, thereby achieving discoloration of the display panel. Operational effect.

Referring to FIG. 5, another embodiment of the present invention includes a first module 10, a second module 20, and an electro-optical light element 30, and the electro-optical light element 30 is disposed on the first module 10. And the second module 20.

Further, the first module 10 is a first transparent substrate 12 with a thermally responsive element 14 on one side and a first conductive layer 16 on the other side. The second module 20 is a second transparent substrate 22 with an air glue layer 24 on one side and a second conductive layer 26 on the other side. The electrically excited light element 30 is located between the first conductive layer 16 and the second conductive layer 26.

It is worth noting that the thermo-responsive element 14 of the first module 10 is a thermoelectric chip 44. The light generated by the electrically excited light element 30 can penetrate the air glue layer 24. The heat generated by the electro-optical light-emitting element 30 can be blocked by the air adhesive layer 24 and absorbed by the thermoelectric chip 44, and then the thermal energy absorbed by the thermoelectric chip 44 is used for thermoelectric conversion.

Please refer to FIG. 6, another embodiment of the present invention includes a first module 10, a second module 20 and an electro-optical light element 30, and the electro-optical light element 30 is disposed on the first module 10. And the second module 20.

Further, the first module 10 is a first transparent substrate 12 with a thermally responsive element 14 on one side and a first conductive layer 16 on the other side. The second module 20 is a second transparent substrate 22 with an air glue layer 24 on one side and a second conductive layer 26 on the other side. The electrically excited light element 30 is located between the first conductive layer 16 and the second conductive layer 26.

It is worth noting that the thermal response element 14 of the first module 10 is a combination of a thermochromic element 40 and a thermoelectric chip 44. The light generated by the electrically excited light element 30 can penetrate the air glue layer 24. The heat generated by the electro-optic light element 30 can be blocked by the air adhesive layer 24 and absorbed by the thermo-responsive element 14 formed by the thermo-chromic element 40 and the thermo-electric chip 44. After the thermo-chromic element 40 is heated, The displayed color can be mixed with the light generated by the electric laser element 30. The thermal energy absorbed by the thermoelectric chip 44 can be thermoelectrically converted.

The voltage of the power source 50 can be adjusted during the light emission process of the electrically excited light element 30. The light emitting intensity and heating temperature of the electroluminescent element 30 can be controlled by changes in different voltages, so that the thermochromic element 40 has different color changes, and the color of the thermochromic element 40 and the electroluminescent element The light generated by 30 can form a mixed color, and the display panel with the structure disclosed in the present invention configured in this way has a novel effect that can adjust the luminous intensity and luminous color. At the same time, the thermoelectric chip 44 absorbs waste heat generated by the electro-optic light emitting element 30 to perform thermoelectric conversion, and has the effect of energy reuse.

The thermally-responsive element 14 disclosed in each embodiment, whether it is a thermochromic element 40 or a thermoelectric chip 44, has the effect of absorbing the thermal energy generated by the electro-excitation light-emitting element 30. Therefore, the thermal-reactive element 14 is sufficient to be the The heat-dissipating element of the electro-optical light element 30 is used to increase the service life of the electro-optical light element 30.

In still other embodiments, the thermal energy generated by the electrically excited light element 30 can be blocked by the air glue layer 24 and not transmitted, so the heat absorption of the thermal reaction element 14 can be increased, thereby making the thermal reaction element The color change of 14 can be faster, or the thermoelectric conversion efficiency of the thermal reaction element 14 can be improved. In addition, a part of the light generated by the electrically excited light element 30 penetrates the air glue layer 24, and the designer can use the light that penetrates the air glue layer 24 for further use, such as taking the light as Light source used for lighting or projection.

Similarly, according to the functions and functions provided by the first module 10 and the second module 20 in the embodiments disclosed in FIGS. 3 to 6, the first module 10 may be referred to as a thermal reaction. Module, the second module 20 may be referred to as a light-heat separation module.

The above are the preferred embodiments and design drawings of the present invention, but the preferred embodiments and design drawings are merely examples, and are not intended to limit the scope of the right to the technology of the present invention. Anyone who implements the scope of rights covered by the "Scope of Patent Application" does not depart from the scope of the present invention and is the scope of the applicant's rights.

Claims (10)

    A light-emitting device combining an electrically excited light element and a thermally reactive element includes: a first module, a first transparent substrate with a thermally reactive element on one side and a first conductive layer on the other side; a second A module is a second transparent substrate with an air glue layer on one side and a second conductive layer on the other side, and the second conductive layer is opposite to the first conductive layer; an electrically excited light element is arranged on the Between the first conductive layer and the second conductive layer, the electrically excited light element is driven by a voltage introduced by the first conductive layer and the second conductive layer to generate light and heat; The heat can be blocked by the air glue layer and absorbed by the thermal reaction element, and the light generated by the electrically excited light element can penetrate the air glue layer and the heat reaction element.         The light-emitting device combining an electro-excitation light element and a thermally-responsive element as described in item 1 of the scope of patent application, wherein the thermally-responsive element is a thermochromic element.         According to the light emitting device combining the electro-excitation light element and the thermal reaction element according to item 1 or 2 of the patent application scope, wherein the thermal reaction element includes a plurality of thermochromic elements, and each of the thermochromic elements has a display area.         According to the light-emitting device combining the electrically excited light element and the thermal reaction element described in item 1 of the scope of the patent application, wherein the first conductive layer and the second conductive layer are indium tin oxide transparent conductive films.         A light-emitting device combining an electrically excited light element and a thermally-responsive element includes: a first module; a first transparent substrate is combined with a thermal-reactive element on one side and a first conductive layer on the other side; a second mold A second transparent substrate is combined with an air glue layer on one side and a second conductive layer on the other side, and the second conductive layer is opposite to the first conductive layer; an electrically excited light element is disposed on the first Between a conductive layer and the second conductive layer, the electrically excited light element is driven by a voltage introduced by the first conductive layer and the second conductive layer to generate light and heat; wherein the heat generated by the electrically excited light element It can be blocked by the air glue layer and absorbed by the thermal reaction element, and the light generated by the electrically excited light element can penetrate the air glue layer.         The light-emitting device combining the electro-excitation light element and the thermo-reactive element according to item 5 of the scope of the patent application, wherein the thermo-reactive element is a thermoelectric chip.         According to the light-emitting device combining the electro-excitation light element and the thermal reaction element described in item 5 of the scope of the patent application, the first conductive layer and the second conductive layer are indium tin oxide transparent conductive films.         A light-emitting device combining an electrically excited light element and a thermally reactive element includes: a first module, a first transparent substrate with a thermally reactive element on one side and a first conductive layer on the other side; a second A module is a second transparent substrate with an air glue layer on one side and a second conductive layer on the other side, and the second conductive layer is opposite to the first conductive layer; an electrically excited light element is arranged on the Between the first conductive layer and the second conductive layer, the electrically excited light element is driven by a voltage introduced by the first conductive layer and the second conductive layer to generate light and heat; The heat can be blocked by the air glue layer and absorbed by the heat-responsive element, and the light generated by the electrically excited light element can penetrate the air glue layer and partially penetrate the heat-responsive element.         The light-emitting device combining an electro-active light element and a thermo-reactive element as described in item 8 of the scope of the patent application, wherein the thermo-responsive element includes a combination of a thermochromic element and a thermoelectric chip, and the light generated by the electro-optical element can pass through Through the thermochromic element.         The light-emitting device combining an electro-excitation light element and a thermally-responsive element as described in item 8 or 9 of the scope of patent application, wherein the thermally-responsive element includes a plurality of thermochromic elements, and each of the thermochromic elements has a display area.