KR20170062852A - Door of microwave range for using the transparent display panel - Google Patents

Abstract

The present invention relates to a door for a microwave oven formed of a transparent organic light emitting display panel of a touch screen type and a method of manufacturing the same, and more particularly, to a transparent display panel having a touch terminal for monitoring the inside of the microwave oven and operating and controlling the microwave oven, A shielding layer disposed on the back surface of the transparent display panel to block microwaves generated in the microwave oven, and a touch sensor positioned on the transparent display panel to operate an operation key displayed on the transparency display panel, .

Description

TECHNICAL FIELD [0001] The present invention relates to a door for a microwave oven using a transparent display panel,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a microwave oven door, and more particularly, to a microwave oven door for a transparent display which can display an image while maintaining a shielding ratio against a microwave.

Generally, a microwave oven that cooks food as a dielectric heating due to the translational motion of water molecules contained in food by irradiating a microwave to a food, unlike a cookware by heat conduction or thermal radiation, generates electricity due to application of high- The food is cooked by a very high frequency.

The microwave oven includes a door provided with a sight window for shielding the generated microwaves and checking the process of cooking the food in the microwave oven.

In recent years, microwave oven doors have been combined with other functions, such as simply shielding microwaves and viewing the cooking process.

A typical microwave oven door is provided with a metal layer for blocking microwaves. A circular hole having a predetermined size is regularly patterned in the metal layer so as to confirm the cooking state of the inner food (food visibility).

The metal layer has a thickness of about 1 mm, and a plurality of circular holes having a diameter of about 1.5 mm are regularly arranged (honeycomb) in the metal layer at regular intervals. Here, the pitch of the neighboring circular holes (the distance between the center points of the holes) is 1.9 mm.

Therefore, the diameter of each of the circular holes is about 1.5 mm, which is very small (1.2%) as compared with the microwave wavelength (122 mm, 2.45 GHa) used in the microwave oven. Thus, the metal layer having the plurality of circular holes may have a shielding rate of about 50 dB with respect to the microwave.

Since the circular hole is very large as compared with visible light having a wavelength of 400 nm to 700 nm, the visible light transmits to the hole, and the transmittance of the visible light becomes equal to the aperture ratio of the metal layer. Therefore, the user can check the food cooking state inside the microwave oven.

1 is a view showing a conventional microwave oven. As shown in FIG. 1, a door 120 is hinged to a conventional microwave oven 100 to open and close the cooking chamber. Although not shown in the drawing, a tray is rotatably installed on the bottom surface of the cooking chamber, which is opened and closed by the door 120, so that electromagnetic waves can be uniformly transmitted to the food while the cooking tray is rotated.

The door 120 can confirm the process of cooking food inside the cooking chamber and shields electromagnetic waves generated during cooking from propagating to the outside.

A display panel 110 is provided on the front surface of the microwave oven 100 to display cooking time and other setting values and operation keys 130 for selecting a cooking mode and a cooking time. When the user puts the food on the tray and operates the operation keys 130 to set the cooking condition and presses the cooking start key, the tray inside the cooking chamber rotates and the electromagnetic wave is transmitted to the food to cook the food.

The door 120 of the conventional microwave oven 100 includes only a window function for confirming the electromagnetic wave shielding role and the cooking process. However, in recent years, the user has been required to implement a variety of cooking modes by forming mechanical operation keys for selecting a cooking mode, a cooking time, and the like on the door using display-type operation keys, or to implement various images with the door- Which requires a multi-function door.

The inventors of the present invention have invented a microwave oven door for a transparent display in which a display type operation key is implemented and various images can be displayed during a cooking process, and a manufacturing method thereof.

Disclosure of the Invention The present invention has been made to solve the problems of the conventional microwave oven door as described above, and it is an object of the present invention to provide a microwave oven having a transparency display panel in which an operation key for monitoring the inside of a microwave oven and operating and controlling the microwave oven is displayed as an image, And it is an object of the present invention to provide a microwave oven door that is positioned on one side of a transparency display panel and includes a touch sensor for implementing an image operation key.

It is another object of the present invention to provide a shielding layer which is disposed on the rear surface of a transparent display panel and shields microwaves generated in the microwave oven.

Other features and advantages of the invention will be set forth in the description which follows, or may be obvious to those skilled in the art from the description and the claims.

According to an aspect of the present invention, there is provided a microwave oven door comprising: a transparent display panel having a touch terminal for monitoring the interior of the microwave oven and operating and controlling the microwave oven; A shielding layer disposed on a rear surface of the transparent display panel to shield microwaves generated in the microwave oven; And a touch sensor positioned on the transparency display panel for operating an operation key displayed on the transparency display panel.

 Here, the transparent display panel may include an information display window for indicating the cooking state of the microwave oven.

The touch terminal of the transparent display panel is displayed in the operation key region of the microwave oven and may be located at the lower end of the information display window.

The shielding layer may be a metal pattern forming a square hole.

The metal pattern may be arranged to block the microwave of the microwave oven by 50 db or more.

The transparent display panel may include a plurality of pixels having a light emitting region and a transparent region.

The plurality of pixels may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel.

The red subpixel, the green subpixel, and the blue subpixel each have a light emitting region and may have a common transparent region.

A thin film transistor, a light emitting element, and a color filter may be sequentially arranged in the emission regions of the red sub-pixel, the green sub-pixel, and the blue sub-pixel.

The touch sensor may be positioned on the light emitting region and the transparent region.

The shielding layer may be disposed to have a minimum area in the transparent region to increase the transparency of the pixel.

The transparency display panel may display an image during operation of the microwave oven.

An effect according to an embodiment of the present invention includes a transparency display panel in which an operation key for monitoring the inside of a microwave oven and operating and controlling the microwave oven is displayed as an image and a touch panel A microwave oven door comprising a sensor.

1 is a view showing an example of a general microwave oven;
2 is a plan view schematically showing a microwave oven according to an embodiment of the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a transparent organic light emitting display (OLED) display panel, and more particularly,
4 is a plan view schematically showing a touch-screen type transparent organic light emitting display panel according to an embodiment of the present invention.
FIG. 5 is a schematic view illustrating a structure of a transparent organic light emitting display panel of a touch screen type according to A-A 'of FIG. 4. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto.

In the case where the word 'includes', 'having', 'done', etc. are used in this specification, other parts can be added unless '~ only' is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

In the case of a description of a temporal relationship, for example, if a temporal posterior relationship is described by 'after', 'after', 'after', 'before', etc., 'May not be contiguous unless it is used.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

Like reference numerals throughout the specification denote substantially identical components. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The names of components used in the following description are selected in consideration of ease of specification, and may be different from actual product names.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

Hereinafter, an OLED display according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a plan view schematically showing a microwave oven according to an embodiment of the present invention.

2, the door 210 for a microwave oven according to an exemplary embodiment of the present invention includes a transparent organic light emitting display panel 220 of a touch screen type.

The door 210 is hinged to the microwave oven 200 to open and close the cooking chamber. Although not shown in the drawing, a tray is rotatably installed on the bottom surface of the cooking chamber, which is opened and closed by the door 210, so that electromagnetic waves can be uniformly transmitted to the food by rotating the tray during cooking. However, the present invention is not limited to this, and the tray may not be rotated on the bottom surface of the inside of the cooking chamber, or a tray may not be provided.

Referring to FIG. 2, the organic light emitting display panel 220 serves as a viewing window for the microwave oven door 210, which can check the environment inside the microwave cooking chamber. That is, the microwave oven door 210 uses a transparent organic light emitting display panel 220 having a certain visibility characteristic.

In addition, the transparent organic light emitting display panel 220 can utilize a touch screen method as a display device using organic EL technology. Accordingly, the user can selectively view various image images through the microwave oven door 210 while operating the microwave oven 200.

The door 210 for a microwave oven formed by the touch screen type transparency organic light emitting display panel 220 can provide a desired image while cooking food using the microwave oven 200 unlike the conventional door. In addition, since the organic light emitting display panel 220 is a transparent panel, the organic light emitting display panel 220 can also function as a transparent window.

The touch screen type transparency organic light emitting display panel 220 can be implemented in the transparent organic light emitting display panel 220 according to the present invention by providing information display and operation keys located on the side or bottom of the perspective window of the conventional microwave oven door have. Accordingly, it is possible to display various information related to the current cooking mode, as well as to set the cooking conditions using the touch screen method.

Transparency The OLED display panel 220 may implement a microwave operation key function using a touch sensor. As a result, the viewing window area of the door 210 for the microwave oven can be increased as compared with the case where the touch sensor is implemented outside the transparent organic light emitting display panel 220.

FIG. 3 is a schematic view illustrating an information display window and operation keys implemented in a touch-sensitive transparent organic light emitting display panel according to an exemplary embodiment of the present invention. Referring to FIG.

Referring to FIG. 3, the touch-sensitive transparent organic light emitting display panels 220 and 300 include an information display window area 310 and an operation key area 320.

In the operation key region 320 implemented in the touch screen type transparency organic light emitting display panels 220 and 300, the user can select and invoke the cooking menu through the touch screen method, And the like can be set in various ways. That is, an operation key region 320 for monitoring the inside of the microwave oven and operating and controlling the microwave oven may be displayed as an image on the transparent organic light emitting display panels 220 and 300.

In the information display window area 310, the remaining time of the cooking mode currently being displayed is displayed, and the called menu or options are displayed. In particular, various information such as the cooking method, time, and notes regarding the selected cooking menu can be displayed.

 In addition, normally, when an error occurs in the system while performing the clock function, an error related message is displayed so that the user can know what type of error occurred in the system.

For example, a selection key 320a for adding a cooking time in units of 30 seconds and an option key 320b for controlling the output level of the microwave oven by 10 units are provided below the information display window area 310, A start key 320c for starting the cooking mode may be implemented in the operation key region 320 in a touch screen manner. In addition, the help call key 320d, the power off key 320e, the main screen call key 320f, and the like can be implemented in the operation key region 320. [ The help call key 320d may call and provide help for each item for a user unfamiliar with the operation of the touch screen screen. The power-off key 320e is for turning off the power supply, and the main screen call key 320f is for initializing a screen displayed on the touch-sensitive transparent organic light emitting display panel 210.

For example, when the user desires to return to the main screen while setting the cooking condition for a specific cooking mode, pressing the main screen call key 320f causes the initial screen Can be seen.

However, the various keys of the operation key region 320 as shown in FIG. 3 are illustrative, and other types of keys may be added to the operation key region 320, and some of the keys shown in FIG. 3 are omitted . In addition, the positions and sizes of the keys arranged in the operation key region 320 can be variously set.

4 is a plan view schematically illustrating a transparent organic light emitting display panel of a touch screen type according to an embodiment of the present invention.

The transparent organic light emitting display panel 400 used in the door 210 for a microwave oven of the present invention includes the light emitting regions 420R, 420G, and 420G of the red subpixel 411, the green subpixel 412, and the blue subpixel 413, 420B and at least one pixel 410 having a red sub-pixel 411, a green sub-pixel 412 and a common transparent region 430 of the blue sub-pixel 413. The transparent organic light emitting display panel 400 includes a shielding layer 440 blocking microwaves and a touch sensor 450. In FIG. 3, only one pixel 410 of the transparent organic light emitting display panel 400 is illustrated for convenience of explanation.

4, the pixel 410 of the transparent organic light emitting diode display panel 400 includes light emitting regions 420R, 420G, and 420B for emitting light and a transparent region for increasing transparency, that is, a common transparent region 430, Respectively.

The light emitting regions 420R, 420G, and 420B include a red light emitting region 420R, a green light emitting region 420G, and a blue light emitting region 420B. The light emitting regions 420R, 420G, and 420B may have a rectangular shape.

The common transparent region 430 is a common transparent region of the red sub-pixel 411, the green sub-pixel 412, and the blue sub-pixel 413, and has a rectangular shape. 4, the transparent region 430 is located corresponding to the light emitting regions 420R, 420G, and 420B. In this specification, the common transparent region 430 means a region in which all the elements disposed in the transparent region are substantially transparent so as to transmit external light and not emit light

In FIG. 4, the pixel 410, the light emitting regions 420R, 420G and 420B, the red sub pixel 411, the green sub pixel 412, the blue sub pixel 413 and the common transparent region 430, The red sub-pixel 411, the green sub-pixel 412, the blue sub-pixel 413, and the common transparent region 430. The pixel 410, the light emitting regions 420R, 420G, and 420B, May be in a different shape.

Transparency The red subpixel 411, the green subpixel 412, and the blue subpixel 413 of the organic light emitting display panel 400 can receive an external driving voltage and image data to display an image. Each of the light emitting regions 420R, 420G, and 420B of the red sub-pixel 411, the green sub-pixel 412, and the blue sub-pixel 413 includes a thin film transistor (TFT) Respectively. The thin film transistor (TFT) element and the organic light emitting element are located in the respective light emitting regions 420R, 420G, and 420B and are not located in the common transparent region 430.

Since the door 210 for the microwave oven is required to have transparency so that it can be seen through the inside of the cooking chamber, the pixel 410 of the transparent organic light emitting display panel 400 needs to be composed of a light emitting portion and a transmissive portion.

In implementing the transparent organic light emitting display panel 400 of the present invention, it is very important to secure the transparency of the transparent organic light emitting display panel 400. Transparency In order to ensure transparency of the organic light emitting display panel 400, it is preferable that the polarizing plate generally used in the organic light emitting display is removed. However, when the polarizer is removed, external light reflection due to various metals such as various wirings, various electrodes, and reflective layers formed on the organic light emitting display device is increased, so that the contrast ratio of the organic light emitting display device is lowered and the visibility of the organic light emitting display device is lowered . As another method for securing the transparency of the transparent organic light emitting display panel 400, the light emitting regions 420R, 420G, and 420B are formed to increase the size of the common transparent region 430 of the transparent organic light emitting display panel 400 The arrangement of the common transparent regions 430 can be appropriately changed.

4, the pixel 410 does not implement the light emitting regions 420R, 420G, and 420B and the transparent regions for each sub-pixel, and the pixel 410 includes the red sub-pixel 411, the green sub- 420G, and 420B of the blue sub-pixel 413 and the common transparent region 430 of the blue sub-pixel 413, respectively. As a result, the common transparent region 430 in the pixel 410 can have an optimal size.

Referring to FIG. 4, a shielding layer 440 for microwave shielding is a layer for shielding a microwave generated for cooking in a cooking chamber of a microwave oven. The shielding layer 440 is formed as a metal pattern on the lower surface of the transparent organic light emitting display panel 400. The metal pattern is regularly spaced at regular intervals to form a plurality of square holes having a length of about 9 mu m to 100 mu m . The plurality of rectangular holes may be arranged in a honeycomb shape (hexagonal shape).

Most of the shielding layer 440 may be located in each of the red, green and blue sub-pixels 411, 412, and 413 of the blue sub-pixel 413. A portion of the shielding layer 440 may be spaced apart from the common transparent region 330 of the red sub-pixel 411, the green sub-pixel 412, and the blue sub- The shielding layer 440 may be disposed to have a minimum area in the common transparent region 430 in order to increase the transmittance.

The touch sensor 450 enables the operation keys necessary for operating and controlling the microwave oven to be implemented in the touch-sensitive transparent organic light emitting display panel 400 of the present invention. The touch screen method includes an on-cell method in which a touch sensor panel (TSP) is formed on a color filter of an organic light emitting display device, an in-cell method in which a thin film transistor of an organic light emitting display device is formed, Method.

FIG. 5 is a schematic view showing a structure of a transparent organic light emitting display panel of a touch screen type according to A-A 'of FIG. Referring to FIG. 5 together with FIG. 4, the structure of the transparent organic light emitting display panel 500 of the touch screen type of the present invention can be briefly described.

The touch screen type transparency organic light emitting display panel 500 is formed by sequentially forming a shielding layer 510, a substrate 520, a thin film transistor 530, an organic light emitting diode 540, a color filter 550 and a touch sensor 560 do.

The substrate 520 is a substrate for supporting various elements of the transparent organic light emitting display panel 500 of the touch screen type. The substrate 510 is a thin glass substrate and has low weight and good durability.

A shielding layer 510 is formed on the back surface of the substrate 520. The shielding layer 510 is formed of a metal mesh pattern and is regularly arranged at regular intervals to define a plurality of rectangular holes. Such an arrangement of the shielding layer 510 can provide an aperture ratio of 85% or more while maintaining a shielding rate of 50 dB or more for microwave generated in the microwave oven.

Next, a thin film transistor 530, an organic light emitting diode 540, and a color filter 550 are sequentially formed on the substrate 520 in the light emitting regions 420R, 420G, and 420B.

The footer sensor 560 is formed over the light emitting regions 420R, 420G, and 420B and the transparent region 430. [ In addition, the footer sensor 560 is formed on the back surface of the color filter 550, so that the thickness of the touch panel can be reduced. The touch sensor 560 may be formed by first forming a touch electrode on the back surface of the color filter 550 and then turning it over to perform the color filter 550 process.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. Will be clear to those who have knowledge of.

110: display 120, 210: door
130: Operation keys 220: Transparent organic light emitting display panel
310: Information display window area 320: Operation key area
410: pixel 430: common transparent region
411, 412 and 413: red sub pixels, green sub pixels, blue sub pixels
420R, 420G, and 420B: a red light emitting region, a green light emitting region,
440, 510: shield layer 450, 560: touch sensor
520: substrate 530: thin film transistor
540: organic light emitting element 550: color filter

Claims (12)

A transparent display panel having a touch terminal for monitoring the inside of the microwave oven and operating and controlling the microwave oven;
A shielding layer disposed on a rear surface of the transparent display panel to shield microwaves generated in the microwave oven; And
And a touch sensor positioned on the transparency display panel for operating an operation key displayed on the transparency display panel. The method according to claim 1,
Wherein the transparent display panel includes an information display window for indicating a cooking state of the microwave oven. 3. The method of claim 2,
Wherein the touch terminal of the transparent display panel is displayed in an operation key region of the microwave oven and is positioned at a lower end of the information display window. The method according to claim 1,
Wherein the shielding layer is a metal pattern forming a square hole. 5. The method of claim 4,
Wherein the metal pattern is arranged to block the microwave of the microwave oven by 50 db or more. The method according to claim 1,
Wherein the transparent display panel includes a plurality of pixels having a light emitting region and a transparent region. The method according to claim 6,
Wherein the plurality of pixels are composed of a red sub-pixel, a green sub-pixel, and a blue sub-pixel. 8. The method of claim 7,
Pixel, the red sub-pixel, the green sub-pixel, and the blue sub-pixel each have a light emitting region and have a common transparent region. 8. The method of claim 7,
Wherein a thin film transistor, a light emitting element, and a color filter are sequentially arranged in a light emitting region of each of the red sub-pixel, the green sub-pixel, and the blue sub-pixel. The method according to claim 6,
Wherein the touch sensor is located on the light emitting region and the transparent region. 9. The method of claim 8,
Wherein the shielding layer is arranged to have a minimum area in the transparent region to increase the transparency of the pixel. The method according to claim 6,
Wherein the transparency display panel displays an image during operation of the microwave oven.

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