KR102230719B1 - Transparent illumination device using transparent display panel and method for driving the same - Google Patents

Abstract

The present invention provides a liquid crystal panel having a liquid crystal layer, a light guide plate disposed on the rear surface of the liquid crystal panel, an optical sheet for diffusing external light toward the light guide plate, and providing external light to the liquid crystal panel through the optical sheet and the light guide plate. It provides a display lighting apparatus including a light source and a control device for controlling driving of the liquid crystal panel to implement an internal memory image or an external image through the liquid crystal panel.

Description

Display lighting device and driving method using transparent display panel {TRANSPARENT ILLUMINATION DEVICE USING TRANSPARENT DISPLAY PANEL AND METHOD FOR DRIVING THE SAME}

The present invention relates to a lighting device, and more particularly, to a display lighting device and a driving method using a transparent display panel.

In recent years, displays are not simply viewed, but are manufactured in accordance with various environments, adding a function of information delivery or advertisement.

In addition, with the commercial use of transparent displays, the range of use is expanding to the general home and automobile industries. However, most displays have a self-luminous display device, and an image can be implemented only in a dark external environment, and it is difficult to implement an image in a bright environment.

In addition, with the rapid development of LEDs, lighting that emits light in general homes is changing from halogen lamps to LEDs, and to realize the brightness of the existing lighting, research on the development of high-brightness LEDs and maximizing efficiency according to the arrangement of LEDs. I'm doing it.

In particular, in order to play the role of lighting, the intensity of light and the brightness of light close to that of ordinary natural light are required, and commercially available LED lighting increases the fatigue of the eyes rapidly according to the straightness of the light. For example, acrylic or opaque glass is used.

In the conventional transparent display, it was difficult to realize an image in a bright environment because the transparent display device was limited to a self-luminous display device. In addition, research has been active in limited places such as showcases that can be used in dark external environments.

In addition, a display that serves as an illumination using a backlight only transmits light from the backlight according to the direction of the liquid crystal, and in a structure having a large area, light erection is weak and efficiency is low.

As described above, in the conventional transparent display, due to the nature of using a self-luminous device, when external light is bright, the clarity thereof is limited, and the use of a film made of a polymer or the like is also limited by the external environment. Fundamentally, the transparent display did not implement a form that uses external light as a light source.

An object of the present invention is to maximize the display role of a transparent display using a commercially available bright light source, provide a variety of information, and display lighting using a transparent display panel capable of performing various lighting roles suitable for the user's preference. It is to provide an apparatus and a driving method.

In order to solve the above problems, in one aspect, the present invention provides a liquid crystal panel having a liquid crystal layer, a light guide plate disposed on a rear surface of the liquid crystal panel, an optical sheet for diffusing external light toward the light guide plate, and the optical sheet And a light source providing external light to the liquid crystal panel through a light guide plate, and a control device for controlling driving of the liquid crystal panel to implement an internal memory image or an external image through the liquid crystal panel. Device can be provided.

In a display lighting apparatus using such a transparent display panel, a general lighting mode may be implemented through the liquid crystal panel by turning off the liquid crystal panel while the light source is turned on.

In the display lighting apparatus using such a transparent display panel, the liquid crystal panel is turned on while the light source is turned on to provide an internal memory image or an external image to the liquid crystal panel through a control device to implement a display mode. I can.

In order to solve the above-described problem, in another aspect, the present invention provides a display lighting device including a liquid crystal panel, a light guide plate, and a control device for controlling driving of the liquid crystal panel, and turning on a light source. In this state, the liquid crystal panel is selectively turned on or off to switch the liquid crystal panel to a transparent mode to implement a general lighting mode, or to turn on the control device to display an internal memory image or an external image. It is possible to provide a method of driving a display lighting device including receiving information data and implementing a display mode through the liquid crystal panel.

In such a method of driving a display lighting device, the general lighting mode may be implemented by switching the liquid crystal panel to a transparent mode with a light source turned on to implement a general lighting mode through the liquid crystal panel.

In such a method of driving a display lighting device, the display mode is implemented by turning on the liquid crystal panel and the control device while the light source is turned on to receive information data of an internal memory image or an external image to the liquid crystal panel. Through the display mode can be implemented.

A display lighting apparatus and a driving method using a transparent display panel according to the present invention can achieve a simple manufacturing configuration and cost reduction by using the illumination of an LED or halogen lamp without using a luminous body for self-emission.

In addition, the present invention can maximize the interior effect by adding the display panel to the light source.

Furthermore, the present invention can be used as a display lighting applicable to various types of lighting and environment by controlling the amount of external light through a control device and expressing a color suitable for the user's preference.

In addition, the present invention can provide and deliver a lot of information by using display lighting in public offices and waiting rooms with a large number of the public.

According to the present invention, a ceiling TV or the like can be implemented in a general home, and brightness and color clarity of light can be increased compared to a general transparent liquid crystal display device (LCD) using a light emitter.

The present invention can implement various types of displays compared to a conventional liquid crystal display device having a backlight, and can bring about cost reduction with a simple structure.

1 is an exploded perspective view schematically showing a display lighting apparatus using a transparent display panel according to the present invention.
2 is a schematic cross-sectional view illustrating a display lighting apparatus using a transparent display panel according to the present invention.
3 is a schematic view showing a display lighting apparatus using a transparent display panel according to the present invention.
4 is a diagram schematically illustrating an image pattern appearing on a liquid crystal panel when implementing a display mode in a display lighting apparatus using a transparent display panel according to the present invention.
5 is a flowchart illustrating driving of a display lighting apparatus using a transparent display panel according to the present invention, and is a flowchart schematically illustrating a driving flow of a general lighting mode and a display mode.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible, even if they are indicated on different drawings. In addition, in describing the embodiments of the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, in describing the constituent elements of the invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are for distinguishing the constituent element from other constituent elements, and the nature, order, or order of the constituent element is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to that other component, but another component between each component It will be understood that elements may be “connected”, “coupled” or “connected”. In the same context, when it is described that a component is formed "above" or "below" another component, the component is all formed directly on the other component or indirectly through another component. It should be understood as including.

1 is an exploded perspective view schematically showing a display lighting apparatus using a transparent display panel according to the present invention.

2 is a schematic cross-sectional view of a display lighting apparatus using a transparent display panel according to the present invention.

3 is a schematic diagram of a display lighting apparatus using a transparent display panel according to the present invention.

4 is a diagram schematically illustrating an image pattern appearing on a liquid crystal panel when implementing a display mode in a display lighting apparatus using a transparent display panel according to the present invention.

1 and 2, the display lighting apparatus according to the present invention includes a liquid crystal panel 110 having a liquid crystal layer, a light guide plate 120 disposed on the rear surface of the liquid crystal panel 110, and the light guide plate ( An optical sheet 130 that diffuses toward 120, a light source 140 for providing external light to the liquid crystal panel 110 through the optical sheet 130 and the light guide plate 120, and the liquid crystal panel 110 A control device 150 for controlling the driving of the liquid crystal panel 110 to implement an internal memory image or an external image through the liquid crystal panel 110, the light guide plate 120, the optical sheet 130, and the light source 140 Includes a lighting housing 160 surrounding the.

Although not shown in the drawing, the liquid crystal panel 110 includes a thin film transistor array substrate, a color filter substrate, and a liquid crystal layer formed therebetween.

A plurality of data lines and gate lines cross each other on the thin film transistor array substrate, and a pixel region is formed for each cross region. In the pixel region, a thin film transistor as a switching device, a pixel electrode, a storage capacitor, and the like are formed.

In addition, a black matrix (BM), a color filter, and the like are formed on the color filter substrate. The common electrode forming an electric field facing the pixel electrode is formed on the upper glass substrate in a vertical electric field driving method such as TN (Twisted Nematic) mode and VA (Vertical Alignment) mode, and IPS (In Plane Switching) mode and FFS (Fringe) mode. It can be formed on the lower glass substrate together with the pixel electrode in a horizontal electric field driving method such as the Field Switching mode.

Moreover, the liquid crystal layer is driven by a potential difference between the data voltage applied to the pixel electrode and the common electrode applied to the common electrode.

In addition, as shown in FIG. 4, a display pattern 170 having a predetermined shape may be formed on the liquid crystal panel 110. In this way, the transparency of the liquid crystal panel 110 is adjusted through the display pattern 170 of a certain shape to express various colors through the color filter, and the amount of light is adjusted to suit the user's preference according to the installation location. You can also provide the role of.

The light guide plate (LGP) 120 serves to guide the light emitted from the light source 140 to the liquid crystal panel 110. The light incident on one side of the light guide plate 120 is repeatedly refracted and reflected by a diffuser added to the inside of the light guide plate 120 to proceed to the other side, and then is emitted to the top of the light guide plate 140. That is, the light guide plate 140 serves to change light having an optical distribution in the form of a point light source or a line light source into light having an optical distribution in the form of a surface light source. In addition, the light guide plate 120 may form one structure with the liquid crystal panel 110.

On the other hand, the optical sheet 130 is disposed on the rear surface of the light guide plate 120 to diffuse light emitted to the light source 140 so as to be uniformly incident inside the light guide plate 140. Although not shown in the drawing, the optical sheet 130 is a diffusion sheet for diffusing light emitted from the light source 140, and a uniform light over the entire area of the light guide plate 120 by condensing the light diffused by the diffusion sheet. It may be made of a plurality of prism sheets to supply.

One diffusion sheet (not shown) is usually provided, but the prism sheet (not shown) may include a first prism sheet and a second prism sheet in which the prisms are perpendicularly intersected in the X- and Y-axis directions. The first prism sheet and the second prism sheet refract light in the X- and Y-axis directions to improve the straightness of light.

In addition, the number of diffusion sheets and prism sheets is not limited thereto, and some optical sheets may be added or removed so as to be provided in 4 or more or 2 or less as necessary.

A pattern (not shown) may be formed on one surface of the prism sheet to more evenly distribute the luminance of light, and the shape of the pattern may be formed in various shapes such as mountains, hemispheres, and polygons.

Further, as the light source 140, an LED lamp or a halogen lamp is applied, and in addition to these, various light sources that generate light such as a cold cathode fluorescent lamp may be used.

The control device 150 receives an external image or information data and provides it to the liquid crystal panel 110 so that it is displayed through the liquid crystal panel 110, and may express an image by embedding its own image data in a memory.

The control device 150 may be driven together with an on/off switch (not shown) of the light source 140 or may be driven individually through a separate remote control or the like.

When driven together with the operation switch of the light source 140, the switch includes a selection switch (not shown) capable of driving an image or a display pattern (not shown, see 170 in FIG. 4) stored in the internal memory of the control circuit 150 May be provided, and various images and display patterns 170 may be stored in a memory according to a user's preference.

In addition, information in the form of text for transmitting information to others can also be stored and displayed, so information such as a message can be delivered to a third party. At this time, character information such as text may be selected and expressed in various positions of the liquid crystal panel 110 as shown in FIG. 4, and may be expressed in a circular shape or various shapes instead of a straight line.

The display lighting apparatus using the transparent display panel according to the present invention can achieve a simple manufacturing configuration and cost reduction by using illumination of an LED or halogen lamp without using a luminous body for self-emission.

In addition, the present invention can maximize the interior effect by adding the display panel to the light source.

Furthermore, the present invention can be used as a display lighting applicable to various types of lighting and environment by controlling the amount of external light through a control device and expressing a color suitable for the user's preference.

In addition, the present invention can provide and deliver a lot of information by using display lighting in public offices and waiting rooms with a large number of the public.

According to the present invention, a ceiling TV or the like can be implemented in a general home, and brightness and color clarity of light can be increased compared to a general transparent liquid crystal display device (LCD) using a light emitter.

The present invention can implement various types of displays compared to a conventional liquid crystal display device having a backlight, and can bring about cost reduction with a simple structure.

A method of driving a display lighting device using a transparent display panel according to the present invention having such a configuration will be described with reference to FIG. 5 as follows.

5 is a flowchart illustrating driving of a display lighting device using a transparent display panel according to the present invention, and is a flowchart schematically illustrating a driving flow of a general lighting mode and a display mode.

As shown in FIG. 5, the display lighting apparatus according to the present invention may selectively implement a general lighting mode and a display mode in a state in which the light source is turned on.

When the general lighting mode is implemented through the display lighting device according to the present invention, as shown in FIG. 5, when the lighting device is first turned on (S110), a liquid crystal panel (110 in FIG. 2) is described. Reference) is in the off state (S112), that is, in the transparent mode state (S114).

Then, the light source of the lighting device (see 140 in FIG. 2) sees the entire area through the light guide plate (see 120 in FIG. 2).

Thereafter, by emitting soft light due to the translucent property of the light guide plate 120, the original function of the lighting device, that is, the general lighting mode (S116), is performed through the liquid crystal panel 110, and the performance efficiency is maximized. Will be ordered.

On the contrary, when the case of implementing the display mode through the display lighting device according to the present invention will be described, as shown in FIG. 5, when the light source 140 of the lighting device is first turned on (S110), The liquid crystal panel 110 is turned on (S122).

Then, the control device (see 150 in FIG. 2) is turned on to receive information data of an internal memory image (S126a) or an external image (S126b), and provide the information to the liquid crystal panel 110 to provide the liquid crystal panel 110. Through the display mode (S128) is to be implemented.

In this case, the internal memory of the control device 150 may store and display an image that the user likes, or, as shown in FIG. 4, by implementing a display pattern (see 170 in FIG. 4) to suit the user's preference, mood, etc. You can also deliver information while driving.

In addition, the control device 150 may be connected to the liquid crystal panel 110 using an interface such as a flexible flat cable (FFC) or a flexible printed circuit (FPC). It can be controlled together with the (On)/Off (Off) switch. Moreover, the control device 150 may be controlled by a wireless connection device, for example, a remote control.

In particular, when the lighting device is driven together with the operation switch of the light source 140, the switch has a selection capable of driving an image or a display pattern (not shown, see 170 in FIG. 4) stored in the internal memory of the control circuit 150. A switch (not shown) may be provided, and various images and display patterns 170 may be stored in the memory according to the user's preference.

As described above, according to the present invention, by using the illumination of an LED or halogen lamp without using a luminous body for self-emission, the fabrication configuration is simple and cost can be reduced.

In addition, the present invention can maximize the interior effect by adding the display panel to the light source.

Moreover, the present invention can be utilized as a display lighting applicable to various types of lighting and environment by controlling the amount of external light through a control device and expressing a color suitable for the user's preference.

In addition, the present invention can provide and deliver a lot of information by using display lighting in public offices and waiting rooms with a large number of the public.

According to the present invention, a ceiling TV or the like can be implemented in a general home, and brightness and color clarity of light can be increased compared to a general transparent liquid crystal display device (LCD) using a light emitter.

The present invention can implement various types of displays compared to a conventional liquid crystal display device having a backlight, and can bring about cost reduction with a simple structure.

The embodiments have been described above with reference to the drawings, but the present invention is not limited thereto.

The terms such as "include", "consist of" or "have" described above mean that the corresponding component may be embedded, unless otherwise specified, and thus other components are not excluded. It should be construed as being able to further include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

110: liquid crystal panel 120: light guide plate
130: optical sheet 140: light source
150: control device 160: lighting housing
170: display pattern

Claims (7)

A liquid crystal panel having a liquid crystal layer;
A light guide plate disposed on the rear surface of the liquid crystal panel;
An optical sheet for diffusing external light toward the light guide plate;
A light source providing external light to the liquid crystal panel through the optical sheet and the light guide plate;
And a control device for controlling driving of the liquid crystal panel to implement an internal memory image or an external image through the liquid crystal panel,
A display lighting apparatus that implements a general lighting mode through the liquid crystal panel by turning off the liquid crystal panel while the light source is turned on. delete The display lighting apparatus of claim 1, wherein the liquid crystal panel is turned on while the light source is turned on to provide an internal memory image or an external image to the liquid crystal panel through a control device to implement a display mode. The display lighting apparatus according to claim 1, wherein a display pattern is provided on the liquid crystal panel. Providing a display lighting device including a liquid crystal panel, a light guide plate, and a control device for controlling driving of the liquid crystal panel; And
When the light source is turned on, the liquid crystal panel is selectively turned on or off, and the liquid crystal panel is switched to a transparent mode to implement a general lighting mode, or the control device is turned on. And receiving information data of an internal memory image or an external image to implement a display mode through the liquid crystal panel. The method of claim 5, wherein in the realization of the general lighting mode, the liquid crystal panel is switched to a transparent mode while a light source is turned on to implement a general lighting mode through the liquid crystal panel. The method of claim 5, wherein the display mode is implemented by turning on the liquid crystal panel and the control device while the light source is turned on to receive information data of an internal memory image or an external image and display the information through the liquid crystal panel. A method of driving a display lighting device that implements a mode.

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