CN109540344B - OLED display not prone to cracking - Google Patents
OLED display not prone to cracking Download PDFInfo
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- CN109540344B CN109540344B CN201811409125.4A CN201811409125A CN109540344B CN 109540344 B CN109540344 B CN 109540344B CN 201811409125 A CN201811409125 A CN 201811409125A CN 109540344 B CN109540344 B CN 109540344B
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- memory alloy
- pressure sensor
- temperature regulating
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- 238000005336 cracking Methods 0.000 title description 5
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 47
- 239000002274 desiccant Substances 0.000 claims abstract description 44
- 230000001105 regulatory effect Effects 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 239000000565 sealant Substances 0.000 claims abstract description 11
- 230000008859 change Effects 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims abstract description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 30
- 239000010409 thin film Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention provides an OLED display which is not easy to crack, comprising an upper cover plate, a film drying agent, an OLED device and a lower substrate which are sequentially arranged, wherein the upper cover plate and the lower substrate are packaged into a box through sealant; the sealing glue and the upper cover plate are also provided with a memory alloy, one side of the memory alloy is provided with a temperature regulating plate, the temperature regulating plate is connected with the controller, the film drying agent is provided with a sensor, the sensor is connected with the controller in a wireless communication mode, the sensor detects whether the film drying agent expands and transmits an expansion signal to the controller, the controller regulates the temperature of the temperature regulating plate according to the expansion signal so as to change the shape of the memory alloy, so that the memory alloy stretches and deforms, more space is needed for the expansion of the film drying agent after absorbing moisture, and the OLED is not cracked.
Description
Technical Field
The invention relates to the technical field of liquid crystal display screens, in particular to a liquid crystal display screen with an automatic edge recovery function.
Background
The current technology of the OLED microdisplay patch is done in glove boxes with moisture and oxygen contents less than 1 ppm. And transferring the manipulator in the glove box of the manufactured OLED substrate into the glove box through a loading chamber of the OLED system, and then transferring the glass cover plate from the loading chamber into a plasma cavity for plasma treatment by the manipulator in the OLED system. The UV glue coating on the glass sheet is completed by an automatic glue coater with a well-regulated program, the glass cover plate coated with the UV glue and the manufactured OLED substrate are aligned, the glass cover plate and the manufactured OLED substrate are placed into a packaging clamp one by one and pressed together, a barrier isolated from the external environment is formed after UV exposure, and the barrier can effectively prevent water and oxygen in the air from entering the OLED and prevent the opportunity of reacting with the water and oxygen. In the case of a patch, a thin film desiccant is also typically provided to absorb residual moisture and moisture generated when the OLED device heats up, as shown in fig. 1. The OLED display is susceptible to cracking due to expansion of the thin film desiccant after absorbing moisture, resulting in further damage to the OLED display. This technical problem is described in the paper "analysis of glass patch process defects for active OLED microdisplays" (author: duan Qian).
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the OLED display which is not easy to crack, and when the thin film desiccant expands after absorbing moisture and more space is needed, the memory alloy is stretched and deformed to increase the accommodating space of the thin film desiccant, so that the OLED is not cracked.
The invention provides an OLED display which is not easy to crack, comprising an upper cover plate, a film drying agent, an OLED device and a lower substrate which are sequentially arranged, wherein the upper cover plate and the lower substrate are packaged into a box through sealant; the sealing glue and the upper cover plate are also provided with a memory alloy, a temperature regulating plate is arranged on the outer side of the memory alloy and connected with the controller, the film drying agent is provided with a sensor which is connected with the controller in a wireless communication manner, the sensor detects whether the film drying agent expands and transmits an expansion signal to the controller, and the controller regulates the temperature of the temperature regulating plate according to the expansion signal so as to change the shape of the memory alloy and enable the memory alloy to stretch and deform.
Further, the sensor is a pressure sensor, the pressure sensor is arranged at a gap between the upper cover plate and the OLED device, the pressure sensor is a bidirectional pressure sensor, the left side surface and the right side surface of the bidirectional pressure sensor are sensing surfaces, and the pressure of the left side surface and the right side surface of the pressure sensor can be measured simultaneously; the pressure sensors send measured left and right side pressures to the controller.
Further, the left side face of the pressure sensor detects a first pressure value, the right side face of the pressure sensor detects a second pressure value, the pressure sensor transmits the first pressure value and the second pressure value to the controller, and when the controller judges that the first pressure value and the second pressure value are not 0, the temperature regulating plate is controlled to heat the memory alloy.
Further, the pressure values detected by the left side surface and the right side surface of the pressure sensor are restored to 0 again, and the controller controls the temperature regulating plate to stop heating.
Further, the sensor is a humidity sensor, the humidity sensor is used for detecting humidity in the film drying agent, the controller is provided with an input module and a memory, the input module is used for inputting a humidity threshold value, the memory is used for storing the humidity threshold value, the humidity sensor detects a humidity signal in the film drying agent and transmits the humidity signal to the controller, the controller compares the detected humidity signal with the humidity threshold value stored in the memory, and when the detected humidity signal value is larger than the humidity threshold value, the controller controls the temperature regulating sheet to heat the memory alloy.
According to the technical scheme, the beneficial effects of the invention are as follows:
1. the invention provides an OLED display which is not easy to crack, comprising an upper cover plate, a film drying agent, an OLED device and a lower substrate which are sequentially arranged, wherein the upper cover plate and the lower substrate are packaged into a box through sealant; the sealing glue and the upper cover plate are also provided with a memory alloy, one side of the memory alloy is provided with a temperature regulating plate, the temperature regulating plate is connected with the controller, the film drying agent is provided with a sensor, the sensor is connected with the controller in a wireless communication mode, the sensor detects whether the film drying agent expands and transmits an expansion signal to the controller, the controller regulates the temperature of the temperature regulating plate according to the expansion signal so as to change the shape of the memory alloy, so that the memory alloy stretches and deforms, more space is needed for the expansion of the film drying agent after absorbing moisture, and the OLED is not cracked.
2. The invention provides an OLED display which is not easy to crack, and the length of a memory alloy to be stretched cannot be preset because the extent of water absorption expansion of a film desiccant is different in the use process. And set up two-way pressure sensor, the pressure of pressure sensor left surface and right flank is visited simultaneously, can judge whether the film drier expands through the pressure value of 2 sensing surfaces, can also judge whether the tensile deformation of memory alloy is in place through the pressure value of 2 sensing surfaces, namely: whether the gap between the upper cover plate and the OLED device is restored to the original width.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a conventional OLED micro-display according to the background art of the present invention.
FIG. 2 is a schematic diagram showing the structure of an OLED display with a thin film desiccant not prone to cracking before expansion.
FIG. 3 is a schematic diagram showing the structure of an OLED display with a thin film desiccant after expansion, which is not prone to cracking.
Fig. 4 is a schematic structural diagram of a pressure sensor according to the present invention.
Reference numerals:
1-upper cover plate, 2-film desiccant, 3-OLED device, 4-lower substrate, 5-sealant, 6-memory alloy, 7-temperature regulating plate, 8-sensor, 81-pressure sensor, 82-left sensing surface of pressure sensor, 83-right sensing surface of pressure sensor.
Description of the embodiments
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.
Please refer to fig. 1-2.
Embodiment 1, an OLED display that is not easy to crack provided in this embodiment includes an upper cover plate 1, a thin film desiccant 2, an OLED device 3, and a lower substrate 4 that are sequentially disposed, where the upper cover plate 1 and the lower substrate 4 are encapsulated into a case by a sealant; a memory alloy 6 is also arranged between the sealant 5 and the upper cover plate 1, the top of the memory alloy 6 is adhered to the upper cover plate 1, and the bottom of the memory alloy 6 is adhered to the sealant 5; the left side of the memory alloy 6 is provided with a temperature regulating plate 7, the temperature regulating plate 7 is connected with a controller, and the temperature regulating plate 7 is controlled by the controller and transmits the temperature to the memory alloy 6; the film drier 2 is provided with a sensor 8 which is in wireless communication connection with the controller, the sensor is used for detecting whether the film drier expands and transmitting an expansion signal to the controller, the controller adjusts the temperature of the temperature adjusting sheet according to the expansion signal so as to change the shape of the memory alloy and lead the memory alloy to stretch and deform, so that the film drier can be adapted to the condition that more space is needed for expansion of the film drier after absorbing moisture, and the OLED display is not cracked.
The sensor is a humidity sensor, the humidity sensor is used for detecting humidity in the film drying agent, the controller is provided with an input module and a memory, the input module is used for inputting a humidity threshold value, and the memory is used for storing the humidity threshold value. The humidity sensor detects humidity signals in the film drying agent and transmits the humidity signals to the controller, the controller compares the detected humidity signals with humidity threshold values stored in the memory, and when the detected humidity signal values are larger than the humidity threshold values, the controller controls the temperature of the temperature regulating sheet to rise or fall so as to enable the memory alloy to stretch and deform, and the film drying agent is suitable for the situation that the film drying agent expands after absorbing moisture and needs more space, so that the OLED display is not cracked.
The sensor 8 is a pressure sensor 81, the pressure sensor 81 is arranged at a gap between the upper cover plate 1 and the OLED device 3, one side of the pressure sensor 81 is a memory alloy 6, and the other side of the pressure sensor 81 is a film desiccant 2; the pressure sensor 81 is a bidirectional pressure sensor, and can measure the left and right pressures at the same time; the bidirectional pressure sensor is square, and the left side surface 82 and the right side surface 83 of the square bidirectional pressure sensor are sensing surfaces; in a normal state, the pressure value detected by the two sensors is 0;
if the film desiccant absorbs water and expands, the right side surface of the pressure sensor is extruded by the expanded film desiccant, and if the pressure value of the left side surface of the pressure sensor is still 0 and the pressure value is detected by the right side surface of the pressure sensor, the controller judges that the expansion volume of the film desiccant is within the allowable range, and the controller does not act.
If the left side face of the pressure sensor detects a first pressure value, the right side face of the pressure sensor detects a second pressure value, and the first pressure value and the second pressure value are not 0. The pressure sensor transmits the first pressure value and the second pressure value to the controller respectively, the controller judges that the film drying agent expands, the expanded volume exceeds the allowable range, the pressure sensor is extruded, and at the moment, the controller controls the temperature regulating plate to heat so as to enable the memory alloy to stretch and deform.
In the process of heating and stretching the memory alloy, the total mass is unchanged, the length of the memory alloy after stretching is increased, the width of the memory alloy is reduced, the space of the pressure sensor 81 close to the side of the memory alloy 6 is increased, and the height of the space is also increased so as to adapt to the requirement of more space for expansion of the film drying agent after absorbing moisture. Meanwhile, the pressure sensor 81 moves toward the memory alloy 6 side due to the pressure of the film desiccant pressing force. At this time, when the pressure values detected at the left and right sides of the pressure sensor are restored to 0 again, the increased void space after the memory alloy is stretched satisfies the space requirement of the expanded film desiccant, and the controller controls the temperature regulating plate to stop heating.
Because the extent of the water swelling of the film desiccant varies during use, the length to which the memory alloy needs to be stretched cannot be preset. And set up two-way pressure sensor, the pressure of pressure sensor left surface and right flank is visited simultaneously, can judge whether the film drier expands through the pressure value of 2 sensing surfaces, can also judge whether the tensile deformation of memory alloy is in place through the pressure value of 2 sensing surfaces, namely: whether the gap between the upper cover plate and the OLED device is restored to the original width.
The temperature regulating sheet is an electric heating sheet, the electric heating sheet is sequentially connected with a heating switch and a controller, and the controller controls the opening and closing of the heating switch according to signals of the pressure sensor.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (2)
1. The OLED display is characterized by comprising an upper cover plate (1), a film desiccant (2), an OLED device (3) and a lower substrate (4) which are sequentially arranged, wherein the upper cover plate (1) and the lower substrate (4) are packaged into a box through a sealant (5); a memory alloy (6) is further arranged between the sealant (5) and the upper cover plate (1), a temperature regulating sheet (7) is arranged on the outer side of the memory alloy (6), the temperature regulating sheet (7) is connected with a controller, a sensor (8) is arranged on the film drying agent (2), the sensor (8) is in wireless communication connection with the controller, the sensor (8) detects whether the film drying agent expands or not and transmits an expansion signal to the controller, and the controller regulates the temperature of the temperature regulating sheet (7) according to the expansion signal so as to change the shape of the memory alloy (6) and enable the memory alloy (6) to stretch and deform;
the sensor (8) is a pressure sensor (81), the pressure sensor (81) is arranged at a gap between the upper cover plate (1) and the OLED device (3), the pressure sensor (81) is a bidirectional pressure sensor, and the left side surface (82) and the right side surface (83) of the bidirectional pressure sensor are sensing surfaces, so that the pressure of the left side surface (82) and the right side surface (82) of the pressure sensor (81) can be measured simultaneously; the pressure sensor (81) sends the measured left and right side pressures to a controller;
the left side surface (82) of the pressure sensor (81) detects a first pressure value, the right side surface (82) of the pressure sensor detects a second pressure value, the pressure sensor transmits the first pressure value and the second pressure value to the controller, and when the controller judges that the first pressure value and the second pressure value are not 0, the temperature regulating sheet (7) is controlled to heat the memory alloy (6) so as to enable the memory alloy to be stretched and deformed;
the pressure values detected by the left side surface and the right side surface of the pressure sensor are restored to 0 again, and the controller controls the temperature regulating plate to stop heating.
2. The OLED display is characterized by comprising an upper cover plate (1), a film desiccant (2), an OLED device (3) and a lower substrate (4) which are sequentially arranged, wherein the upper cover plate (1) and the lower substrate (4) are packaged into a box through a sealant (5); a memory alloy (6) is further arranged between the sealant (5) and the upper cover plate (1), a temperature regulating sheet (7) is arranged on the outer side of the memory alloy (6), the temperature regulating sheet (7) is connected with a controller, a sensor (8) is arranged on the film drying agent (2), the sensor (8) is in wireless communication connection with the controller, the sensor (8) detects whether the film drying agent expands or not and transmits an expansion signal to the controller, and the controller regulates the temperature of the temperature regulating sheet (7) according to the expansion signal so as to change the shape of the memory alloy (6) and enable the memory alloy (6) to stretch and deform;
the sensor (8) is a humidity sensor, the humidity sensor is used for detecting humidity in the film drying agent, the controller is provided with an input module and a memory, the input module is used for inputting a humidity threshold value, the memory is used for storing the humidity threshold value, the humidity sensor detects a humidity signal in the film drying agent and transmits the humidity signal to the controller, the controller compares the detected humidity signal with the humidity threshold value stored in the memory, and when the detected humidity signal value is greater than the humidity threshold value, the controller controls the temperature of the temperature regulating sheet to rise or fall so that the memory alloy tensile deformation adapts to the space required by the expansion of the film drying agent after absorbing moisture.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811409125.4A CN109540344B (en) | 2018-11-23 | 2018-11-23 | OLED display not prone to cracking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811409125.4A CN109540344B (en) | 2018-11-23 | 2018-11-23 | OLED display not prone to cracking |
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| CN109540344A CN109540344A (en) | 2019-03-29 |
| CN109540344B true CN109540344B (en) | 2024-02-13 |
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| CN112524280B (en) * | 2020-11-30 | 2022-03-08 | 宁波方太厨具有限公司 | Water inlet flow stabilizing device for gas water heater, water inlet connector and water heater |
| CN115100973B (en) * | 2022-08-24 | 2022-11-15 | 深圳市美丽加科技有限公司 | High-strength display screen and electronic equipment |
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