KR102353276B1 - Panel for adjusting transmittance and transparent display apparatus using the same - Google Patents

Abstract

The present invention relates to a transparent display device, and more particularly, to a lower substrate and an upper substrate such that a lower electrode unit having a lower auxiliary electrode exposed to the outside and an upper electrode unit having an upper auxiliary electrode exposed to the outside are displaced from each other It is a technical task to provide a variable transmittance panel and a transparent display device using the same. To this end, the transmittance variable panel according to the present invention includes a lower substrate, an upper substrate and an electrolyte material. The lower substrate includes a lower auxiliary electrode and a lower electrochromic material. The upper substrate includes an upper auxiliary electrode and a counter material. The electrolyte material is disposed between the lower substrate and the upper substrate. At least one lower electrode part protruding to the outside of the lower substrate is provided on the lower substrate.

Description

Transmittance variable panel and transparent display device using the same

The present invention relates to a variable transmittance panel capable of changing light transmittance and a transparent display device using the same.

Display devices are used in various types of electronic products including mobile phones, tablet PCs, notebook computers, monitors, and the like. The display device includes a liquid crystal display (LCD) and an organic light emitting display (OLED: organic light emitting display APPARATUS).

Among the display devices, the liquid crystal display device is currently the most widely commercialized due to the advantages of mass production technology, ease of driving means, and implementation of high quality. Among display devices, an organic light emitting diode display has been attracting attention as a next-generation display device because it has a high response speed and low power consumption.

Recently, in order to satisfy the needs of users who prefer various functions and various designs, a transparent display device capable of transmitting light has been developed.

When a user views an image through the transparent display device, a rear surface of the transparent display device may be viewed through the transparent display device.

The transparent display device includes a transparent panel for outputting an image, and a transmittance variable panel attached to a rear surface of the transparent panel to vary transmittance of light generated from the light.

An organic light emitting display panel may be used as the transparent panel. A transparent display device using an organic light emitting display panel has a good contrast ratio in a dark environment, but has a disadvantage in that the contrast ratio is lowered in a general environment in which there is light.

Accordingly, when an organic light emitting display panel is used as the transparent panel, a transmittance variable panel capable of implementing a light blocking mode for blocking light and a transmission mode for transmitting light should be used in order to prevent a decrease in contrast ratio.

As the transmittance variable panel, a panel having an electrochromic characteristic may be used.

1 is an exemplary view illustrating a lower auxiliary electrode and an upper auxiliary electrode provided on a lower substrate and an upper substrate of a conventional variable transmittance panel, and FIG. 2 is an exemplary view showing a cross-section of a conventional variable transmittance panel.

The transmittance variable panel having electrochromic properties includes a lower substrate, an upper substrate, and an electrolyte material 40 disposed between the lower substrate and the upper substrate.

As shown in FIG. 2, the lower substrate includes a lower base substrate 10, a lower auxiliary electrode 11, a lower main electrode, and a lower electrochromic material, and the upper substrate is an upper base substrate 20 , an upper auxiliary electrode 21, an upper main electrode, and a counter material.

When the lower substrate and the upper substrate are bonded to each other, the lower substrate and the upper substrate do not overlap completely, and as shown in FIG.

The reason is to connect the lower auxiliary electrode 11 and the upper auxiliary electrode 21 with an external power supply through an electric wiring.

For example, when the lower auxiliary electrode 11 and the upper auxiliary electrode 21 are completely overlapped, the first and second wires connected to the power supply are connected to the lower auxiliary electrode 11 and the upper auxiliary electrode ( 21) cannot be secured.

In addition, when the lower auxiliary electrode 11 and the upper auxiliary electrode 21 are completely overlapped, the sealing material 30 applied to the side surfaces of the lower substrate and the upper substrate is difficult to be cured by ultraviolet rays or the like. The substrate and the upper substrate should be bonded so as to be displaced from each other.

As described above, when the lower substrate and the upper substrate are bonded to each other while being displaced from each other, the outer portion of the transmittance variable panel, that is, the width of the bezel is increased. Accordingly, the width of the bezel of the transparent display device is also increased.

The present invention has been proposed to solve the above-mentioned problems, and the lower substrate and the lower electrode part having the lower auxiliary electrode exposed to the outside and the upper electrode part having the upper auxiliary electrode exposed to the outside are displaced from each other. It is a technical task to provide a transmittance variable panel to which an upper substrate is attached, and a transparent display device using the same.

The transmittance variable panel according to the present invention for achieving the above-described technical problem includes a lower substrate, an upper substrate and an electrolyte material. The lower substrate includes a lower auxiliary electrode and a lower electrochromic material. The upper substrate includes an upper auxiliary electrode and a counter material. The electrolyte material is disposed between the lower substrate and the upper substrate. At least one lower electrode part protruding to the outside of the lower substrate is provided on the lower substrate. The lower auxiliary electrode is exposed on the lower electrode part, and at least one upper electrode part protruding outside the upper substrate is provided on the upper substrate. The upper electrode is exposed on the upper electrode part, and the lower electrode part and the upper electrode part are displaced from each other.

A transparent display device according to the present invention for achieving the above technical problem includes a transparent panel and the transmittance variable panel. The transparent panel outputs an image and is manufactured to be transparent. The transmittance variable panel is attached to the rear surface of the transparent panel, and varies the transmittance of light.

In the present invention, since the lower electrode part and the upper electrode part are displaced from each other, the printed circuit boards connected to the power supply can be individually attached to the upper and lower substrates. Therefore, according to the present invention, the width of the bezel formed at the outermost portion of the transmittance variable panel including the lower substrate and the upper substrate can be reduced. Accordingly, the width of the bezel of the transparent display device using the variable transmittance panel may be reduced.

According to the present invention, the position of the light source 300 for curing the sealing material 170 can be freely changed by the upper fine pattern 129 and the lower fine pattern 119 .

According to the present invention, the transmittance variable panel can be manufactured by the process of cutting the outer part. In this case, the width of the bezel formed at the outermost portion of the variable transmittance panel may be reduced, and accordingly, the width of the bezel of the transparent display device using the variable transmittance panel may be reduced.

1 is an exemplary view showing a lower auxiliary electrode and an upper auxiliary electrode provided on a lower substrate and an upper substrate of a conventional variable transmittance panel.
2 is an exemplary view showing a cross-section of a conventional variable transmittance panel.
3 is an exemplary view showing the configuration of a transparent display device according to the present invention.
Figure 4 is an exemplary view showing a cross-section of the transmittance variable panel according to the present invention.
5 to 9 are exemplary views for explaining the lower auxiliary electrode and the upper auxiliary electrode constituting the transmittance variable panel according to the first embodiment of the present invention.
10 and 11 are exemplary views for explaining the lower auxiliary electrode and the upper auxiliary electrode constituting the transmittance variable panel according to the second embodiment of the present invention.
12 and 13 are exemplary views showing a cross section of a transmittance variable panel according to a third embodiment of the present invention.

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

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments make the disclosure of the present invention complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully inform the person of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the present specification, it should be noted that, in adding reference numbers to the components of each drawing, the same numbers are provided to the same components as possible even though they are indicated on different drawings.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are exemplary, and thus the present invention is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, cases including the plural are included unless otherwise explicitly stated.

In interpreting the components, it is construed as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

In the case of a description of a temporal relationship, for example, 'immediately' or 'directly' when a temporal relationship is described with 'after', 'following', 'after', 'before', etc. It may include cases that are not continuous unless this is used.

The term 'at least one' should be understood to include all possible combinations of one or more related items. For example, the meaning of 'at least one of the first item, the second item and the third item' means not only the first item, the second item, or the third item respectively, but also two of the first item, the second item and the third item. It means a combination of all items that can be presented from more than one.

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

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, technically various interlocking and driving are possible, and each embodiment may be independently implemented with respect to each other or implemented together in a related relationship. may be

3 is an exemplary view showing the configuration of a transparent display device according to the present invention.

The transparent display device according to the present invention, as shown in FIG. 3, outputs an image, is attached to a transparent transparent panel 200 and a rear surface of the transparent panel 200, and is a variable transmittance panel ( 100) is included.

First, the transparent panel 200 may be configured as an organic light emitting display panel.

The transparent panel 200 is provided with gate lines and data lines, and is provided in the transparent panel 200 by a gate pulse supplied to the gate lines and data voltages supplied through the data lines. An image is output from each pixel.

When the transparent panel 200 is configured as the organic light emitting display panel, the organic light emitting display panel may be manufactured using a top emission method.

As shown in FIG. 2 , the transparent panel 200 using the top emission method outputs an image in the front direction where the user is located.

In the transparent panel 200 , a region where an image is output is referred to as a non-transmissive part, and a region disposed around the non-transmissive part to transmit light transmitted from the outside of the transparent panel is called a transmissive part. That is, in the transparent panel 200 , the light emitting part from which the image is output by the organic light emitting devices is the non-transmissive part, and the area disposed around the non-transmissive part to transmit the light transmitted from the outside of the transparent panel is the transmissive part.

In more detail, when the transparent panel 200 is the organic light emitting display panel, light of red, green, blue, etc. is output through the non-transmissive part. The transmitting part may be made of a transparent material, or may be made of only a transparent glass substrate.

Second, the transmittance variable panel 100 is disposed on the rear surface of the transparent panel 200 . The transmittance variable panel 100 varies the transmittance of the light transmitted from the rear direction of the transparent display device, and transmits the variable transmittance to the transparent panel 200 .

The transparent display device manufactured with the transparent panel is being used because it has the advantage that the background of the transparent display device can be seen at the same time as the image is output.

However, there may be users who do not want to see the background of the transparent display device. Also, an image output from the display device may become unclear due to the background of the transparent display device.

In this case, the user may change the transmittance of the transmittance variable panel 100 .

A specific configuration, function, and manufacturing method of the variable transmittance panel 100 will be described below with reference to FIGS. 4 to 13 .

4 is an exemplary view showing a cross-section of the transmittance variable panel according to the present invention. Hereinafter, the basic configuration and driving principle of the variable transmittance panel 100 will be briefly described with reference to FIG. 4 . The lower auxiliary electrode 112 and the upper auxiliary electrode 122 shown in FIG. 4 represent a lower stripe electrode and an upper stripe electrode, which will be described with reference to FIGS. 5 to 9 . However, in the description of FIG. 4 , the lower stripe electrode and the upper stripe electrode are simply referred to as the lower auxiliary electrode 112 and the upper auxiliary electrode 122 .

The lower auxiliary electrode 112 and the upper auxiliary electrode 122 are aligned with the non-transmissive portion (light emitting portion) of the transparent panel 200 .

The variable transmittance panel 100 according to the present invention performs a function of blocking the incident light in the light blocking mode and transmitting the incident light in the transmitting mode.

As shown in FIG. 4, the transmittance variable panel 100 according to the present invention is coated with a lower base substrate 111, a lower auxiliary electrode 112, a lower main electrode 113 and a lower electrochromic material 114. The lower substrate 110, the upper base substrate 121, the upper auxiliary electrode 122, the upper main electrode 123 and the upper substrate 120 coated with the counter material 124, and the lower substrate 110 and the It includes an electrolyte material 130 disposed between the upper substrate 120 .

First, each of the lower base substrate 111 and the upper base substrate 121 may be a plastic film. For example, each of the lower base substrate 111 and the upper base substrate 121 may include a cellulose resin such as triacetyl cellulose (TAC) or diacetyl cellulose (DAC), norbornene derivatives. COP (cyclo olefin polymer) such as, COC (cyclo olefin copolymer), acrylic resin such as PMMA (poly(methylmethacrylate), PC (polycarbonate), PE (polyethylene) or PP (polypropylene) such as polyolefin ), PVA (polyvinyl alcohol), PES (poly ether sulfone), PEEK (polyetheretherketone), PEI (polyetherimide), PEN (polyethylenenaphthalate), PET (polyethyleneterephthalate), polyester, PI (polyimide), PSF (polysulfone) ), or a sheet or film containing fluoride resin, etc., but is not limited thereto.

Second, the lower auxiliary electrode 112 is provided on the lower base substrate 111 , and the upper auxiliary electrode 122 is provided on the upper base substrate 121 .

Each of the lower auxiliary electrode 112 and the upper auxiliary electrode 122 may be an opaque electrode. The opaque electrode may be copper (Cu) or aluminum (Al), but is not limited thereto.

A resistance value per unit area of each of the lower auxiliary electrode 112 and the upper auxiliary electrode 122 is smaller than a resistance value per unit area of each of the lower main electrode 113 and the upper main electrode 123 . As the lower auxiliary electrode 112 is formed, an area in which the lower main electrode 113 is formed may be reduced, and a resistance value of the lower main electrode 113 may be reduced. In addition, since the upper auxiliary electrode 122 is formed, the area in which the upper main electrode 123 is formed can be reduced, and the resistance value of the upper main electrode 123 can be reduced.

As the resistance values of the lower main electrode 113 and the upper main electrode 123 are reduced, a time for applying a voltage to the lower main electrode 113 and the upper main electrode 123 may be reduced. Accordingly, the time for discoloration of the lower electrochromic material 114 may be reduced.

Third, the lower main electrode 113 is provided on the lower auxiliary electrode 112 and the lower base substrate 111 , and the upper main electrode 113 is provided on the upper auxiliary electrode 122 and the upper base substrate 121 . An electrode 123 is provided.

Each of the lower main electrode 113 and the upper main electrode 123 may be a transparent electrode. The transparent electrode may include oxide (eg AgO or Ag2O or Ag2O3), aluminum oxide (eg Al2O3), tungsten oxide (eg WO2 or WO3 or W2O3), magnesium oxide (eg MgO), molybdenum oxide (eg MoO3). ), zinc oxide (eg ZnO), tin oxide (eg SnO2), indium oxide (eg In2O3), chromium oxide (eg CrO3 or Cr2O3), antimony oxide (eg Sb2O3 or Sb2O5), titanium oxide (eg TiO2), nickel oxide (eg NiO), copper oxide (eg CuO or Cu2O), vanadium oxide (eg V2O3 or V2O5), cobalt oxide (eg CoO), iron oxide (eg Fe2O3 or Fe3O4), niobium oxide (eg Nb2O5), indium tin oxide (eg Indium Tin Oxide, ITO), indium zinc oxide (eg Indium Zinc Oxide, IZO), aluminum doped zinc oxide (eg Aluminum doped Zinc Oxide, ZAO), It may be aluminum-doped tin oxide (eg, Aluminum Tin Oxide, TAO) or antimony tin oxide (eg, Antimony Tin Oxide, ATO), but is not limited thereto.

Fourth, when a voltage is applied to the lower main electrode 113 and the upper main electrode 123 , the lower electrochromic material 114 , the counter material 124 , and the electrolyte material 130 undergo a redox reaction. This occurs, whereby the color of the lower electrochromic material 114) is changed.

For example, depending on the polarity of the voltage supplied to the lower main electrode 113 through the lower auxiliary electrode 112 and the voltage supplied to the upper main electrode 123 through the upper auxiliary electrode 122, A reduction reaction may occur in the lower electrochromic material 114 , and an oxidation reaction may occur in the counter material 124 . In this case, since the lower electrochromic material 114 is changed to a color such as black by a reduction reaction, incident light may be blocked.

Conversely, an oxidation reaction may occur in the lower electrochromic material 114 and a reduction reaction may occur in the counter material 124 . In this case, since the lower color-changing material 114 is changed to be transparent by the oxidation reaction, incident light can pass therethrough.

The lower electrochromic material 114 may include a core material such as a transparent conductive oxide (TCO) and an electrochromic material bonded to the core material.

As the core material, TiO2, In2O3, SnO2, RuO2, or a material in which TiO2 is surface-treated on ITO may be used.

As the electrochromic material, a material having a predetermined color by absorbing a predetermined color when a reduction reaction occurs and changing transparently when an oxidation reaction occurs may be used. For example, the electrochromic material may be viologen (1,1'-dibenzyl-4,4'-bipyridinium bistetrafluorborate).

In order to enhance the light blocking function of the lower electrochromic material 114, it is preferable that electrochromic materials having various colors by a reduction reaction are combined with the core material.

The counter material 240 performs a function of assisting the lower electrochromic material 114 to smoothly perform a redox reaction. The counter material 124 is TMPD (N,N,N',N'-tetramethyl-1,4-phenylenediamine), TMB (3,3',5,5'-Tetramethylbenzidine), NTMB (N,N,N) ',N'-Tetramethylbenzidine) or DAB (3,3'-Diaminobenzidine). The counter material 240 may be omitted.

The electrolyte material 130 may include an electrolyte, a polymer, and a UV initiator. The electrolyte may be lithium perchlorate, t-butylammoinum perchlorate, t-butylammoinum-tfluoroborate, or tetrabutylammonium trifluoromethanesulfonate.

The polymer may be an acrylate-based, polyester-based, or epoxy-based polymer.

The UV initiator may be benzoin ethers or amines.

The electrolytic material 130 may be formed by UV curing after being applied in a viscous liquid state. The electrolytic material 130 provides positive and negative ions to enable redox reaction between the lower electrochromic material 114 and the counter material 124 .

5 to 9 are exemplary views for explaining the lower auxiliary electrode and the upper auxiliary electrode constituting the transmittance variable panel according to the first embodiment of the present invention. 5 to 8, each of the lower auxiliary electrode 112 and the upper auxiliary electrode 122 is illustrated as being individually configured, but the lower auxiliary electrode 112 is disposed on the lower substrate 110, The upper auxiliary electrode 122 is disposed on the upper substrate 120 .

As described above, the resistance value of each of the lower auxiliary electrode 112 and the upper auxiliary electrode 122 is smaller than the resistance value of each of the lower main electrode 113 and the upper main electrode 123 . Have.

The time for which a voltage is applied to the lower main electrode 113 and the upper main electrode 123 may be reduced by the lower auxiliary electrode 112 and the upper auxiliary electrode 122 .

First, the lower auxiliary electrode 112 is disposed outside the lower stripe electrodes 116 and the lower substrate 110 disposed in the form of a stripe on the lower substrate 110 , and the lower stripe electrode 116 is disposed outside the lower substrate 110 . and a first lower outer electrode 117a electrically connected to the ?

The upper auxiliary electrode 122 is disposed on the outer side of the upper stripe electrodes 126 and the upper substrate 110 disposed in a stripe shape on the upper substrate 120 , and is formed with the upper stripe electrodes 126 and and a first upper outer electrode 127a electrically connected thereto.

As shown in FIGS. 5 to 8 , the lower stripe electrodes 116 are arranged side by side and are spaced apart from each other at regular intervals.

A width of each of the lower stripe electrodes 116 may be less than or equal to a width of a region constituting the non-transmissive portion of the transparent panel 200 . For example, when the non-transmissive portion is a unit pixel including a red pixel, a green pixel, a blue pixel, and a white pixel, the width of the lower stripe electrode 116 may be less than or equal to the width of the unit pixel.

The width of the lower stripe electrode 116 may be greater than the width of the region constituting the non-transmissive portion. In this case, since the transmitting portion is covered by the lower stripe electrode 116 , the area of the transmitting portion is reduced.

The distance between the lower stripe electrodes 116 may correspond to the width of the transmissive parts arranged in one row on the transparent panel 200 , or the transmissive parts arranged in two or more rows on the transparent panel 200 . may correspond to their width.

For example, in the transparent panel 200 , pixels constituting the unit pixels may be arranged in a row in the vertical direction of the transparent panel 200 with transmissive portions interposed therebetween. Accordingly, in the transparent panel 200 , a plurality of pixel columns (non-transmissive portion columns) and a plurality of transparent portion columns are provided in the vertical direction of the transparent panel 200 .

In this case, when the lower stripe electrodes 116 are arranged side by side in the vertical direction of the variable transmittance panel 100 as shown in FIG. 5 , the two lower stripe electrodes 116 adjacent to each other are Between them, one row of transmissive parts provided in the vertical direction of the transparent panel 200 may be disposed, two rows of transmissive parts may be disposed, and three rows of transmissive parts may be disposed.

When one row of transmissive portions provided in the vertical direction of the transparent panel 200 are disposed between the lower stripe electrodes 116 , the distance between the lower stripe electrodes 116 is greater than the left and right widths of the transmissive region. may be greater than or equal to In this case, the distance between the lower stripe electrodes 116 may be smaller than the left and right widths of the transmissive region, but in this case, the transmissive region may be narrowed.

When two rows of transmissive parts provided in the vertical direction of the transparent panel 200 are disposed between the lower stripe electrodes 116 , the distance between the lower stripe electrodes 116 is the same as that of the transparent panel 200 . The distance may be greater than or equal to the sum of the widths of the two transmissive parts adjacent in the left and right directions and the width of one non-transmissive part disposed between the two transmissive parts.

Between the lower stripe electrodes 116 , three or more rows of transmissive portions provided in the vertical direction of the transparent panel 200 may be disposed.

The interval between the lower stripe electrodes 116 may be variously changed according to the size of pixels disposed on the transparent panel 200 or the size of the transmittance variable panel 100 .

Since the structure of the upper stripe electrodes 126 is the same as that of the lower stripe electrodes 116 , a detailed description thereof will be omitted.

Second, the first lower outer electrode 117a surrounds the lower stripe electrodes 116 at the outer edge of the lower substrate 110 . Each of the lower stripe electrodes 116 is connected to the first lower outer electrode 117a.

The lower auxiliary electrode 112 may further include a second lower outer electrode 117b facing the first lower outer electrode 117a and disposed outside the lower substrate 110 . In this case, the second lower outer electrode 117b is connected to the lower stripe electrodes 116 .

The lower auxiliary electrode 112 is disposed between the first lower outer electrode 117a and the second lower outer electrode 117b , and disposed at the outer edge of the lower substrate 110 , a third lower outer edge. An electrode 117c and a fourth lower outer electrode 117d may be further included. In this case, the third lower outer electrode 117c and the fourth lower outer electrode 117d are connected to the first lower outer electrode 117a and the second lower outer electrode 117b. Accordingly, the first to fourth lower outer electrodes 117a , 117b , 117c and 117d and the lower stripe electrodes 116 are electrically connected to each other.

The upper auxiliary electrode 122 may also include first to fourth upper outer electrodes 127a, 127b, 127c, and 127d. The structures and functions of the first to fourth upper outer electrodes 127a, 127b, 127c, and 127d are the same as those of the first to fourth lower outer electrodes 117a, 117b, 117c and 117d. .

For example, as shown in FIG. 7 , the first upper outer electrode 127a surrounds the upper stripe electrodes 126 at the outer edge of the upper substrate 120 . Each of the upper stripe electrodes 126 is connected to the first upper outer electrode 127a.

As shown in FIG. 8 , the upper auxiliary electrode 122 faces the first upper outer electrode 127a and a second upper outer electrode 127b disposed outside the upper substrate 120 . may further include. In this case, the second upper outer electrode 127b is connected to the upper stripe electrodes 126 .

As shown in FIG. 6 , the upper auxiliary electrode 122 is disposed between the first upper outer electrode 127a and the second upper outer electrode 127b, and is disposed outside the upper substrate 120 . It may further include a third upper outer electrode 127c and a fourth upper outer electrode 127d disposed in the . In this case, the third upper outer electrode 127c and the fourth upper outer electrode 127d are connected to the first upper outer electrode 127a and the second upper outer electrodes 127b. Accordingly, the first to fourth upper outer electrodes 127a , 127b , 127c and 127d and the upper stripe electrodes 126 are electrically connected to each other.

Third, as shown in FIG. 5 , at least one lower electrode part 115 protruding to the outside of the lower substrate 110 is provided on the lower substrate 110 , and the lower electrode part 115 includes The lower auxiliary electrode 112, in particular, the first lower outer electrode 117a is exposed.

As shown in FIG. 5 , at least one upper electrode part 125 protruding to the outside of the upper substrate 120 is provided on the upper substrate 120 , and the upper electrode part 125 has the upper part. The electrode 122, in particular, the first upper outer electrode 127a is exposed.

The lower electrode part 115 and the upper electrode part 125 are displaced from each other.

Accordingly, as shown in FIG. 6 , when the plurality of lower electrode parts 115 and the plurality of upper electrode parts 125 are provided, the lower electrode parts 115 and the upper electrode part ( 125) are displaced from each other. Accordingly, when the variable transmittance panel is viewed from the planar direction or the rear direction of the variable transmittance panel, the lower electrode part 115 and the upper electrode part 125 are alternately arranged.

A first printed circuit board 141 connected to a first power source is connected to the lower electrode unit 115 , and a second printed circuit board 142 connected to a second power source is connected to the upper electrode unit 125 .

For example, the first lower outer electrode 117a exposed to the lower electrode part 115 is electrically connected to the first power source through the first printed circuit board 141, and the upper electrode part ( The first upper outer electrode 127a exposed to 125 is electrically connected to the second power source through the second printed circuit board 142 .

When the second lower outer electrode 117b is provided on the lower substrate 110 , at least one lower electrode part 115 may also be provided on the second lower outer electrode 117b . When the second upper outer electrode 127b is provided on the upper substrate 120 , at least one lower electrode part 125 may also be provided on the second upper outer electrode 127b.

In this case, the second lower outer electrode 117b is exposed to the outside through the lower electrode part 115 extending from the second lower outer electrode 117b, and the second upper outer electrode 127b is It is exposed to the outside through the upper electrode part 125 extending from the second upper outer electrode 127b.

The lower electrode part 115 extending from the second lower outer electrode 117b and the upper electrode part 125 extending from the second upper outer electrode 117b are displaced from each other.

A fourth printed circuit board 143 connected to the first power source is connected to the lower electrode part 115 extending from the second lower outer electrode 117b, and extended from the second upper outer electrode 127b. A fourth printed circuit board 144 connected to the second power source is connected to the upper electrode part 125 .

In the variable transmittance panel 100 according to the present invention comprising the lower electrode 112 and the upper electrode 122, the ends of the lower substrate 110 and the ends of the upper substrate 120 may coincide with each other. have.

For example, in the present invention, since the lower electrode part 115 and the upper electrode part 125 are displaced from each other, as shown in FIGS. 5 to 8 , the printed circuit board connected to the power supply part The elements 141 to 144 may be individually attached to the upper substrate 110 and the lower substrate 120 .

Therefore, according to the present invention, the width of the bezel formed at the outermost portion of the transmittance variable panel 100 including the lower substrate 110 and the upper substrate 120 can be reduced. Accordingly, the width of the bezel of the transparent display device using the variable transmittance panel 100 may be reduced.

In this case, the sealing material 170 applied to the side surfaces of the lower substrate 110 and the upper substrate 120 is, as shown in FIG. 9 , a light source 300 disposed on the side surface of the variable transmittance panel 100 . ) can be cured by light irradiated from

As described above, the lower auxiliary electrode 112 and the upper auxiliary electrode 122 constituting the transmittance variable panel 100 are the non-transmissive portion of the transparent panel 200, that is, the image from the transparent panel. It is aligned with the light emitting part to be output.

10 and 11 are exemplary views for explaining the lower auxiliary electrode and the upper auxiliary electrode constituting the transmittance variable panel according to the second embodiment of the present invention.

The variable transmittance panel according to the present invention includes the lower substrate 110 , the upper substrate 120 , and an electrolyte material 130 disposed between the lower substrate 110 and the upper substrate 120 .

As described above, at least one lower electrode unit 115 is provided on the lower substrate 110 , and at least one upper electrode unit 125 is provided on the upper substrate 120 . FIG. 10 shows the lower substrate 110 including one lower electrode unit 115 and the upper substrate 120 including one upper electrode unit 125 .

The lower auxiliary electrode 112 may include the first lower outer electrode 117a, and may further include at least one of the second to fourth lower outer electrodes 117b, 117c, and 117d. 10 illustrates the lower substrate 110 including all of the first to fourth lower outer electrodes 117a, 117b, 117c, and 117d.

The upper auxiliary electrode 122 may include the first upper outer electrode 127a, and may further include at least one of the second to fourth upper outer electrodes 127b, 127c, and 127d. 10 shows the upper substrate 120 including all of the first to fourth upper outer electrodes 127a, 127b, 127c, and 127d. 10 shows a process in which the lower substrate 110 and the upper substrate 120 are bonded to each other to manufacture one variable transmittance panel 100 .

In this case, in each of the first to fourth lower outer electrodes 117a, 117b, 117c, and 117d, a lower fine pattern penetrating through each of the first to fourth lower outer electrodes 117a, 117b, 117c, and 117d (119) are provided. Light may pass through the lower fine pattern 119 . In other words, the lower fine pattern 119 is an opening.

In addition, in each of the first to fourth upper outer electrodes 127a, 127b, 127c, and 127d, an upper fine pattern ( 129) are provided. Light may pass through the upper fine pattern 129 . In other words, the upper fine pattern 129 is an opening.

Therefore, as shown in FIG. 11 , between the region in which the lower outer electrode 117 is disposed of the lower substrate 110 and the region in which the upper outer electrode 127 is disposed in the upper substrate 120 is A sealing material 170 may be applied.

In this case, the lower micropattern 119 is formed on the lower outer electrode 117 , and the upper micropattern 129 is formed on the upper outer electrode 127 . Accordingly, as shown in FIG. 11 , the light irradiated from the light source 300 disposed on the upper surface of the variable transmittance panel 100 is transmitted to the lower outer electrode 117 through the upper fine pattern 129 . can be Accordingly, the sealing material 170 may be cured by the light. In this case, the lower fine patterns 119 may not be formed on the lower outer electrode 117 .

Conversely, the light irradiated from the light source disposed on the lower surface of the variable transmittance panel 100 may be transmitted to the upper outer electrode 127 through the lower fine pattern 119 . Accordingly, the sealing material 170 may be cured by the light. In this case, the upper micropatterns 129 may not be formed on the upper outer electrode 127 .

Also, the sealing material 170 may be cured by a light source disposed on a side surface of the variable transmittance panel 100 .

Accordingly, according to the present invention, the position of the light source 300 for curing the sealing material 170 can be freely changed by the upper fine pattern 129 and the lower fine pattern 119 .

12 and 13 are exemplary views showing a cross section of a transmittance variable panel according to a third embodiment of the present invention.

The variable transmittance panel according to the present invention includes the lower substrate 110 , the upper substrate 120 , and an electrolyte material 130 disposed between the lower substrate 110 and the upper substrate 120 .

At least one lower electrode part 115 is disposed on the lower substrate 110 , and at least one upper electrode part 125 is disposed on the upper substrate 120 . 12 and 13 show cross-sections of regions in which the lower electrode part 115 and the upper electrode part 125 are not disposed.

As described in the second embodiment, the transmittance variable panel 100 according to the present invention uses the upper fine pattern 129 and the lower fine pattern 119 to provide the upper substrate 110 and the lower portion. It may be manufactured by curing the sealing material 170 provided between the substrates 120 .

However, as shown in FIG. 12 , the lower substrate 110 and the upper substrate 120 whose ends do not match may be joined by the sealing material 170 . In this case, by cutting the ends of the lower substrate 110 and the upper substrate 120 along the cutting line Y, one variable transmittance panel 100 can be manufactured.

Accordingly, the ends of the lower substrate 110 except for the end at which the lower electrode unit 115 is disposed and the end at which the upper electrode unit 125 is disposed among the ends of the upper substrate 120 . The excluded parts are matched with each other by the cutting process.

In addition, as shown in FIG. 13 , the lower substrate 110 and the upper substrate 120 having the same ends may be bonded to each other by the sealing material 170 . In this case, by cutting the ends of the lower substrate 110 and the upper substrate 120 along the cutting line Y, one variable transmittance panel 100 can be manufactured.

Accordingly, the ends of the lower substrate 110 except for the end at which the lower electrode unit 115 is disposed and the end at which the upper electrode unit 125 is disposed among the ends of the upper substrate 120 . The excluded parts are matched with each other by the cutting process.

Since the transmittance variable panel 100 is manufactured by the cutting process as described above, the width of the bezel formed at the outermost portion of the transmittance variable panel 100 may be reduced. Accordingly, the width of the bezel of the transparent display device using the variable transmittance panel 100 may be reduced.

The transmittance variable panel 100 manufactured by the above process is disposed on the rear surface of the transparent panel 200 manufactured through a separate process.

The transparent display device according to the present invention outputs an image, is manufactured through the transparent transparent panel 200 and the process as described above, is attached to the rear surface of the transparent panel, and the transmittance for changing the transmittance of light and a variable panel 100 .

In this case, the lower substrate 110 of the variable transmittance panel 100 is provided with the lower electrode part 115 protruding from the lower outer electrode 117 , and the lower electrode part 115 has the lower part. The outer electrode 117 is exposed. In addition, the upper electrode part 125 protruding from the upper outer electrode 127 is provided on the upper substrate 120 , and the upper outer electrode 127 is exposed on the upper electrode part 125 .

A first power source (not shown) is connected to the lower electrode unit 115 , and a second power source (not shown) is connected to the upper electrode unit 125 . By controlling the first power and the second power, the transmittance of the variable transmittance panel 100 is changed.

In the transparent panel 200 , a gate driver (not shown) for driving a gate line provided in the transparent panel 200 and a data driver (not shown) for driving a data line provided in the transparent panel 200 are provided. ) is provided.

The gate driver and the data driver may be directly embedded in the transparent panel 200 . However, the gate driver and the data driver may be mounted on the transparent panel 200 after being manufactured as an integrated circuit (IC). In this case, the gate driver and the data driver may be directly mounted on the transparent panel 200 or electrically connected to the transparent panel 200 through the flexible printed circuit board after being mounted on the flexible printed circuit board. can

A flexible printed circuit board electrically connected to the transparent panel 200 or the transparent panel 200 or a printed circuit board electrically connected to the transparent panel 200 controls the gate driver and the data driver A control unit for doing so may be mounted. In addition, various electric devices for driving the transparent panel 200 may be mounted on the transparent panel 200 or the flexible printed circuit board or the printed circuit board.

The present invention as described above is briefly summarized as follows.

In a transmittance variable panel using an electrochromic material, the characteristics of the electrochromic material using a current driving method are very sensitive to electrode resistance. Accordingly, in the variable transmittance panel having a large area, the opaque lower auxiliary electrode 112 and the upper auxiliary electrode 122 are used to prevent the response speed from being slow due to the RC delay of the electrode.

In the conventional variable transmittance panel, the upper substrate and the lower substrate are bonded by obliquely oblique lines, the + and - electrodes are connected to both sides, and the side sealing margin for bonding the upper substrate and the lower substrate is large. Therefore, the width of the bezel formed outside the conventional variable transmittance panel is large.

The present invention is to reduce the width of the bezel of the transmittance variable panel.

Those skilled in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100: variable transmittance panel 200: transparent panel

Claims (10)

a lower substrate coated with a lower auxiliary electrode and a lower electrochromic material;
an upper substrate coated with an upper auxiliary electrode and a counter material; and
An electrolyte material disposed between the lower substrate and the upper substrate,
At least one lower electrode portion protruding to the outside of the lower substrate is provided on the lower substrate, and the lower electrode portion extends from the lower auxiliary electrode;
At least one upper electrode part protruding to the outside of the upper substrate is provided on the upper substrate, and the upper electrode part extends from the upper auxiliary electrode;
The lower electrode part and the upper electrode part are displaced from each other,
The lower auxiliary electrode includes a first lower outer electrode disposed outside the lower substrate;
The upper auxiliary electrode includes a first upper outer electrode disposed outside the upper substrate,
The lower electrode part extends from the first lower outer electrode and is exposed to the outside;
The upper electrode part extends from the first upper outer electrode and is exposed to the outside;
The first lower outer electrode is provided with first lower micropatterns penetrating the first lower outer electrode,
The transmittance variable panel provided with first upper micropatterns penetrating the first upper outer electrode on the first upper outer electrode. The method of claim 1,
The transmittance variable panel in which the ends of the lower substrate and the ends of the upper substrate coincide with each other. The method of claim 1,
The lower auxiliary electrode is
lower stripe electrodes disposed on the lower substrate in a stripe shape; and
and the first lower outer electrode electrically connected to the lower stripe electrodes;
The upper auxiliary electrode is
upper stripe electrodes disposed on the upper substrate in a stripe shape; and
and the first upper outer electrode electrically connected to the upper stripe electrodes. 4. The method of claim 3,
The lower auxiliary electrode further includes a second lower outer electrode facing the first lower outer electrode and disposed outside the lower substrate, the second lower outer electrode being connected to the lower stripe electrodes; ,
The upper auxiliary electrode further includes a second upper outer electrode facing the first upper outer electrode and disposed outside the lower substrate, the second upper outer electrode having transmittance connected to the upper stripe electrodes variable panel. 5. The method of claim 4,
The second lower outer electrode is exposed to the outside through the other lower electrode part, the second upper outer electrode is exposed to the outside through the other upper electrode part, and the other lower electrode part and the other upper electrode part are exposed to the outside. Transmittance variable panels arranged to be offset from each other. delete The method of claim 1,
A variable transmittance panel in which a sealing material is applied between an area of the lower substrate in which the first lower outer electrode is disposed and an area in the upper substrate in which the first upper outer electrode is disposed. The method of claim 1,
A variable transmittance panel to which a first printed circuit board connected to a first power source is connected to the lower electrode unit, and a second printed circuit board connected to a second power source is connected to the upper electrode unit. The method of claim 1,
Portions of the ends of the lower substrate excluding the end at which the lower electrode part is disposed and parts of the ends of the upper substrate except for the end at which the upper electrode part is disposed are matched with each other by a cutting process. Outputs an image, a transparent transparent panel; and
It is attached to the rear surface of the transparent panel and includes a variable transmittance panel for varying the transmittance of light,
The transmittance variable panel,
a lower substrate coated with a lower auxiliary electrode and a lower electrochromic material;
an upper substrate coated with an upper auxiliary electrode and a counter material; and
An electrolyte material disposed between the lower substrate and the upper substrate,
At least one lower electrode portion protruding to the outside of the lower substrate is provided on the lower substrate, and the lower electrode portion extends from the lower auxiliary electrode;
At least one upper electrode part protruding to the outside of the upper substrate is provided on the upper substrate, and the upper electrode part extends from the upper auxiliary electrode;
The lower electrode part and the upper electrode part are displaced from each other,
The lower auxiliary electrode includes a first lower outer electrode disposed outside the lower substrate;
The upper auxiliary electrode includes a first upper outer electrode disposed outside the upper substrate,
The lower electrode part extends from the first lower outer electrode and is exposed to the outside;
The upper electrode part extends from the first upper outer electrode and is exposed to the outside;
The first lower outer electrode is provided with first lower micropatterns penetrating the first lower outer electrode,
The first upper outer electrode is provided with first upper fine patterns penetrating the first upper outer electrode.

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