CN110926134A

CN110926134A - Baking device

Info

Publication number: CN110926134A
Application number: CN201911171634.2A
Authority: CN
Inventors: 闫莹
Original assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-03-27

Abstract

The application discloses baking equipment, baking equipment are used for toasting display panel to get rid of the organic solvent in the display panel, this baking equipment includes: oven, hot plate, absorption net and fan, hot plate and absorption net all assemble in the oven, and the hot plate is used for placing display panel, and the absorption net is arranged in adsorbing the organic solvent that volatilizees from display panel, and the vent has been seted up to the oven, and the fan is towards the vent, and the fan is used for taking out the gas in the oven from vent department. The baking device can be used for absorbing volatilized organic solvents and solutes when the display panel is heated, and pollution is reduced.

Description

Baking device

Technical Field

The application relates to the technical field of display, in particular to a baking device.

Background

The development trend of the OLED is towards the direction of ink-jet printing, wherein the ink-jet printing is to accurately drop printing ink drop by drop into a groove of a pixel definition layer, and then the printing ink is dried and baked to form a film; the thickness of the film formed in the groove of the pixel definition layer is controlled by controlling the volume of each drop, the number of drops and the ink concentration.

The drying and baking after printing is directly related to the film forming uniformity of the device and is one of the keys influencing the light emission of the device. Organic gas and volatilized solute in a cavity of an oven used for baking at present easily cause pollution to a device (especially different organic solvents used by three kinds of ink in RGB printing) when the oven is used for heating, the film forming effect of the device is poor, and the light emitting effect of the device is influenced.

Disclosure of Invention

The application provides a baking equipment is used for solving the problem that the solute that exists organic gas and volatilize in the cavity easily causes the pollution to the device and leads to the device film forming effect not good.

In order to solve the technical problem, the application adopts a technical scheme that: the utility model provides a baking equipment, this baking equipment is used for toasting display panel, and this baking equipment includes oven, hot plate, adsorbs net and fan, and hot plate and adsorption net all assemble in the oven, and the hot plate is used for placing display panel, and the adsorption net is arranged in adsorbing the organic solvent that volatilizees from display panel, and the vent has been seted up to the oven, and the fan is towards the vent, and the fan is used for taking out the gas in the oven from vent department.

Optionally, the adsorption net is provided with micropores in an array, and the micropores are used for adsorbing the organic solvent volatilized from the display panel.

Optionally, the material of the adsorption net comprises alumina.

Optionally, the cross-sectional shape of the adsorption net is U-shaped or C-shaped, and the adsorption net is arranged on the heating plate.

Optionally, the distance between the adsorption net and the heating plate is greater than 1 cm.

Optionally, the adsorption net is detachably connected with the oven.

Optionally, the baking apparatus further comprises: the pipeline and the vent intercommunication, heating device and pipeline connection, heating device are used for heating the pipeline, and the fan is used for taking out the gas in the oven from the pipeline.

Optionally, the heating device comprises a resistance wire, and the resistance wire is arranged in the pipeline or on the outer wall of the pipeline.

Optionally, the heating device further comprises a heat-conducting silica gel piece, the resistance wire is connected with the heat-conducting silica gel piece, and the heat-conducting silica gel piece is connected with the pipeline.

Optionally, the duct comprises a first tube and a second tube, the first tube is nested in the second tube, and the fan is used for pumping out the gas in the oven from the first tube and the second tube.

The beneficial effect of this application does: baking equipment includes oven, hot plate, adsorbs net and fan, and hot plate and adsorption net all assemble in the oven, and the hot plate is used for placing display panel, adsorbs the net and is arranged in adsorbing the organic solvent who volatilizees from display panel, and the vent has been seted up to the oven, and the fan is towards the vent, and the fan is used for taking out the gas in the oven from vent department. The baking device can be used for absorbing volatilized organic solvents when the display panel is heated, and pollution is reduced.

Drawings

FIG. 1 is a schematic perspective view of one embodiment of a toasting apparatus provided herein;

FIG. 2 is a schematic perspective view of another embodiment of a toasting apparatus as provided herein;

FIG. 3 is a schematic structural view of another embodiment of the toasting device provided herein;

FIG. 4 is a schematic cross-sectional view of a duct of the toasting apparatus provided herein.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a perspective view of an embodiment of a baking apparatus 100 provided in the present application.

The present invention firstly provides a baking apparatus 100, wherein the baking apparatus 100 is used for baking a display panel 200, specifically, the display panel 200 needs to be heated in multiple steps of manufacturing to remove an organic solvent, for example, when manufacturing a photoresist, a photoresist solution is firstly coated on a substrate, and then the organic solution in the photoresist solution is evaporated out by the baking apparatus 100 to form a photoresist layer; when the organic light emitting diode in the display panel 200 is inkjet printed, ink is first dropped into the groove of the pixel defining layer drop by drop, and then the organic solution in the ink is evaporated out by the baking apparatus 100 to form the organic light emitting diode. However, the organic solvent in the gas state may be liquefied again when contacting the display panel 200, thereby causing mixing of different organic solvents and causing a defect rate of the display panel 200.

In this embodiment, the baking apparatus 100 includes an oven 110, a heating plate 120, an adsorption net 130, and a fan 140, where the heating plate 120 and the adsorption net 130 are all assembled in the oven 110, the heating plate 120 is used for placing the display panel 200, the adsorption net 130 is used for adsorbing the solvent organic solvent volatilized from the display panel 200, the oven 110 is opened with a vent, the fan 140 faces the vent, and the fan 140 is used for extracting the gas in the oven 110 from the vent. During the operation of the fan 140, the air in the oven 110 is accelerated to flow toward the ventilation opening, so as to drive the volatilized organic solvent to flow toward the ventilation opening to be discharged from the ventilation opening. During the air flowing process, the organic solvent in the gas state is rapidly transformed into the liquid state when contacting the adsorption net 130, thereby achieving rapid collection of the organic solvent.

The adsorption net 130 may be provided with micropores 131 in an array, the micropores 131 are used for adsorbing the solvent organic solvent volatilized from the display panel 200, the number of the micropores 131 is not limited herein, and it can be understood that the larger the unit density of the micropores 131, the better the adsorption effect of the adsorption net 130 is. The diameter of the micro-holes 131 may be between 0.5 mm and 5 mm, such as 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm. In addition, the adsorption net 130 having the array of the micro holes 131 may well homogenize the air flow in the oven 110. The adsorption net 130 may also be provided with a capillary structure, so as to realize rapid adsorption of the organic solvent, and the adsorption net 130 may also be coated with materials having strong adsorption capacity to the organic solvent, such as cyclodextrin.

It is understood that the adsorption net 130 may be provided with at least one of micro pores 131, a capillary structure, and a material having a strong adsorption capacity.

The material of the adsorption net 130 comprises alumina, the alumina has good processability, the micropore 131 structure is easy to process, and in addition, the alumina has natural adsorption effect on the organic solvent.

The cross-sectional shape of the adsorption net 130 may be U-shaped, the cross-sectional shape of the adsorption net 130 may be C-shaped, and the adsorption net 130 is covered on the heating plate 120, so that the display panel 200 on the heating plate 120 may be covered by the adsorption net 130. After the organic solvent on the display panel 200 is volatilized, the adsorption net 130 can adsorb the organic solvent at the first time, so as to prevent the gasified organic solvent from contacting the display panel 200. In addition, the adsorption net 130 may filter the organic solvent in a gasified state in the air, so as to ensure that the air contacting the display panel 200 is filtered by the organic solvent through the adsorption net 130. Optionally, the distance between the adsorption net 130 and the heating plate 120 is greater than cm.

In an embodiment, the adsorption net 130 is detachably connected to the oven 110, and the user removes the adsorption net 130 from the oven 110 according to actual conditions, and puts the adsorption net 130 into the oven 110 after removing the organic solvent, thereby realizing secondary utilization of the adsorption net 130.

Referring to fig. 2, fig. 2 is a perspective view of another embodiment of the baking apparatus 100 provided in the present application.

The toaster apparatus 100 further includes a duct 150 and a heating device 160, wherein the duct 150 is in communication with the vent, the heating device 160 is coupled to the duct 150, the heating device 160 is configured to heat the duct 150, and the fan 140 is configured to draw air from the toaster 110 through the duct 150. The oven 110 is used to bake the display panel 200, the organic solvent generated by baking passes through the duct 150, the heating device 160 is used to heat the duct 150, prevent the organic solvent passing through the duct 150 from liquefying on the inner wall of the duct 150, and the fan 140 discharges the organic solvent through the vent.

In an embodiment, the heating device 160 includes a resistance wire 161, the resistance wire 161 can be disposed in the pipeline 150, the resistance wire 161 is used for heating the gas in the pipeline 150, when the baking device 100 bakes the photoresist layer of the display panel 200, the resistance wire 161 preheats the pipeline 150 in advance, so that a certain temperature is provided in the pipeline 150, at this time, because a certain temperature is provided in the pipeline 150, the organic solvent does not liquefy when passing through, thereby the organic solvent condenses on the inner wall of the pipeline 150, so that the pipeline 150 does not liquefy and accumulate on the inner wall of the pipeline 150 to cause the aperture of the inner wall of the pipeline 150 to become small, the drainage caused is not smooth, and a good exhaust effect can still be maintained when the pipeline is used.

In another embodiment, the heating device 160 includes a resistance wire 161, the resistance wire 161 may be disposed on an outer wall of the pipeline 150, the resistance wire 161 is used for heating the pipeline 150, when the baking device 100 bakes a photoresist layer of the display panel 200, the resistance wire 161 preheats the outer wall of the pipeline 150 in advance, a certain temperature is provided in the pipeline 150 through a heat transfer manner, at this time, a certain temperature is provided in the pipeline 150, the organic solvent is not liquefied when passing through the pipeline 150, thereby avoiding the organic solvent in a gaseous state from condensing on the inner wall of the pipeline 150, further enabling the pipeline 150 not to cause the aperture of the inner wall of the pipeline 150 to become small due to the liquefied accumulation of the organic solvent on the inner wall of the pipeline 150, the drainage is not smooth, and a good exhaust effect can be maintained for.

Referring to fig. 3, fig. 3 is a schematic structural diagram of another embodiment of the baking apparatus 100 provided in the present application.

Heating device 160 still includes heat conduction silica gel piece 162, resistance wire 161 is connected with heat conduction silica gel piece 162, heat conduction silica gel piece 162 is connected with pipeline 150, heat conduction silica gel piece 162 can set up the inside at pipeline 150, heat conduction silica gel piece 162 also can set up on the outer wall of pipeline 150, resistance wire 161 heating makes heat conduction silica gel piece 162 possess the temperature and heats pipeline 150 through the heat transfer, can avoid resistance wire 161 direct contact pipeline 150 like this, indirect heating pipeline 150 makes pipeline 150's temperature rise slower, be convenient for control the temperature, can make the temperature in the pipeline 150 can not produce surge or dip.

Optionally, when the temperature in the pipeline 150 is too low, the resistance wire 161 heats the heat-conducting silica gel piece 162, and when the temperature rises to the lower limit of the calibration temperature, the resistance wire 161 can stop heating, so that the pipeline 150 can be well insulated because the heat-conducting silica gel piece 162 also has a certain temperature, and when the temperature is insufficient, the resistance wire 161 continues to heat.

Optionally, when the temperature in the pipeline 150 is too high, the resistance wire 161 stops heating the heat-conducting silica gel piece 162, when the temperature is about to exceed the calibration temperature or reaches the upper limit of the calibration temperature, the resistance wire 161 stops heating, at this time, because the heat-conducting silica gel piece 162 has the temperature, the temperature of one end time in the pipeline 150 can be kept, sudden drop of the temperature in the pipeline 150 due to the fact that the resistance wire 161 stops heating can be avoided, and when the temperature in the pipeline 150 drops, the resistance wire 161 works again to heat the heat-conducting silica gel sleeve.

Referring to fig. 3 and 4, fig. 4 is a schematic cross-sectional view of the duct 150 of the baking apparatus 100 provided in the present application.

The duct 150 includes a first pipe 151 and a second pipe 152, the first pipe 151 is nested in the second pipe 152, the fan 140 is used for extracting the gas in the oven 110 from the first pipe 151 and the second pipe 152, the first pipe 151 is used for allowing the gas doped with the organic solvent to pass through, the second pipe 152 is also used for allowing the gas doped with the organic solvent to pass through, the organic solvent in the second pipe 152 liquefies and releases heat when encountering the outer wall of the first pipe 151, so that the first pipe 151 is heated, and the gaseous organic solvent in the first pipe 151 is prevented from liquefying on the inner wall of the first pipe 151.

Further, since the second pipe 152 is provided, the first pipe 151 can be kept warm so that the temperature in the first pipe 151 does not decrease, and the decrease in the pore diameter of the duct 150 due to condensation of the organic solvent liquefied on the inner wall of the duct 150 can be reduced.

In an embodiment, the heating device 160 includes a resistance wire 161, the resistance wire 161 is disposed between the first tube 151 and the second tube 152, the resistance wire 161 is used for heating the gas between the first tube 151 and the second tube 152, and there may be a plurality of spacers 153 between the first tube 151 and the second tube 152, when the second tube 152 is the flexible second tube 152, the spacers 153 may effectively separate the first tube 151 and the second tube 152, so as to ensure that the distance between the first tube 151 and the second tube 152 is not changed.

In another embodiment, the heating device 160 includes a resistance wire 161, the resistance wire 161 is disposed in the first tube 151, the resistance wire 161 is used for heating the gas in the first tube 151, when the baking device 100 bakes the photoresist layer of the display panel 200, the resistance wire 161 preheats the pipeline 150 in advance, so that a certain temperature is provided in the pipeline 150, at this time, because a certain temperature is provided in the pipeline 150, the organic solvent does not liquefy when passing through, thereby the organic solvent condenses on the inner wall of the pipeline 150, so that the pipeline 150 does not liquefy and accumulate on the inner wall of the pipeline 150 to cause the aperture of the inner wall of the pipeline 150 to become small, the drainage is not smooth, and a good exhaust effect can be maintained during long-time use.

Optionally, the heating device 160 further includes a thermal conductive silicone part 162, the resistance wire 161 is connected to the thermal conductive silicone part 162, the thermal conductive silicone part 162 is connected to the first tube 151, the thermal conductive silicone part 162 may be connected to an inner wall of the first tube 151, the thermal conductive silicone part 162 may also be connected to an outer wall of the first tube 151, the resistance wire 161 heats the thermal conductive silicone part 162 to have a temperature to heat the pipeline 150 through heat transfer, so that the resistance wire 161 is prevented from directly contacting the pipeline 150, the indirect heating of the pipeline 150 is performed to make the temperature of the pipeline 150 rise slowly, so as to control the temperature, and the temperature in the pipeline 150 may not increase or decrease suddenly.

The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. Such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims

1. A baking apparatus for baking a display panel to remove an organic solvent in the display panel, comprising: oven, hot plate, absorption net and fan, the hot plate with the absorption net all assemble in the oven, the hot plate is used for placing display panel, the absorption net is used for adsorbing the follow the organic solvent that volatilizees out in the display panel, the vent has been seted up to the oven, the fan orientation the vent, the fan be used for with gas in the oven is followed vent department takes out.

2. The baking apparatus as claimed in claim 1, wherein the adsorption net is provided with micro-holes in an array for adsorbing the organic solvent volatilized from the display panel.

3. The toasting apparatus according to claim 1, wherein the material of said absorbing web comprises alumina.

4. The toasting apparatus as claimed in claim 1, wherein the cross-sectional shape of the adsorption net is a U-shape or a C-shape, and the adsorption net is installed on the heating plate.

5. The toasting device according to claim 4, wherein the distance between the suction net and the heating plate is greater than 1 cm.

6. The grilling apparatus of claim 1, wherein the attachment net is removably attached to the toaster.

7. The toasting device of claim 1, further comprising: the pipeline and the heating device are communicated with the ventilation opening, the heating device is connected with the pipeline, the heating device is used for heating the pipeline, and the fan is used for pumping the gas in the oven out of the pipeline.

8. The toasting device according to claim 7, characterized in that the heating means comprise resistance wires which are arranged in the duct or on the outer wall of the duct.

9. The toasting device as claimed in claim 8, wherein the heating device further comprises a thermally conductive silicone member, the resistance wire being connected to the thermally conductive silicone member, the thermally conductive silicone member being connected to the duct.

10. The toasting apparatus according to claim 7, wherein the duct comprises a first tube and a second tube, the first tube being nested within the second tube, the fan being adapted to draw gas from the toaster out of the first and second tubes.