Transparent display device including an emitting area and a transmitting area

A transparent display device including an emitting area and a transmitting area is provided. An upper AR structure is disposed on an upper substrate. The upper AR structure includes an upper reflection-preventing layer and an upper color-compensating layer having a blue dye. As a result, the transparency of the transmitting area is increased.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of Korean Patent Application No. 10-2016-0176627, filed on Dec. 22, 2016, which is hereby incorporated by reference in its entirety as if fully set forth herein.

BACKGROUND

Field of the Disclosure

The present disclosure relates to a display device, and more particularly, to a transparent display device that includes pixel areas, each of the pixel areas having an emitting area and a transmitting area.

Description of the Background

Generally, electronic apparatuses, such as monitors, TVs, laptop computers, and digital cameras, comprise display devices for displaying images. For example, the display devices include a liquid crystal display device or an organic light-emitting display device.

The display device includes pixel areas. Each of the pixel areas displays different color from the adjacent pixel area. For example, the pixel area of the display device includes a blue pixel area displaying blue, a red pixel area displaying red, a green pixel area displaying green, and a white pixel area displaying white.

The display device can be transparent. For example, each of the pixel areas of the display device can further include a transmitting area configured to transmit external light therethrough. The transmitting area can be disposed parallel to emitting areas of the corresponding pixel area. For example, the transmitting areas of the adjacent pixel areas can be connected to each other.

However, because insulating films which insulate between conductive layers for operation of the emitting area are also stacked on the transmitting area, the transmitting area of the display device can display a yellowish color due to the stacked insulating films. That is, the transparency of the display device can be degraded due to the insulating films stacked on the transmitting area. Additionally, the display device can compensate for color variation attributable to the stacked insulating films by forming a blue coating layer containing blue dye on a lower substrate and/or an upper substrate. However, the blue coating layer can still deteriorate transmittance.

SUMMARY OF THE DISCLOSURE

Accordingly, the present disclosure is directed to a transparent display device including an emitting area and a transmitting area that substantially obviates one or more problems due to limitations and disadvantages of the related art.

The present disclosure is to provide a display device that is capable of preventing degradation of transparency due to insulating films stacked on a transmitting area.

In addition, the present disclosure is to provide a display device that is capable of compensating for color variation attributable to insulating films stacked on a transmitting area without deteriorating transmittance.

To achieve these and other advantages and in accordance with the purpose of the disclosure, as embodied and broadly described herein, a display device includes a lower substrate. The lower substrate includes an emitting area and a transmitting area. A light-emitting structure is disposed on the emitting area of the lower substrate. An upper substrate is disposed on the light-emitting structure. The upper substrate extends to a region on the transmitting area of the lower substrate. An upper AR structure is disposed on the upper substrate. The upper AR structure includes an upper reflection-preventing layer and an upper color-compensating layer. The upper color-compensating layer contains a blue dye.

The upper color-compensating layer may have a thickness smaller than a thickness of the upper reflection-preventing layer.

The upper AR structure may further include an upper adhesive layer disposed close to the upper substrate. The upper color-compensating layer may have a thickness smaller than a thickness of the upper adhesive layer.

The blue dye may be contained in the upper color-compensating layer in a content that is greater than 0% and is less than or equal to 10%.

The blue dye may be contained in the upper color-compensating layer in a content that is greater than 0% and is less than or equal to 3%.

A lower AR structure may be disposed on the lower substrate. The lower AR structure may include a lower reflection-preventing layer and a lower adhesive layer.

The lower AR structure may further include a lower color-compensating layer. The lower color-compensating layer may be disposed between the lower reflection-preventing layer and the lower adhesive layer. The lower color-compensating layer may contain a blue dye.

In another aspect of the present disclosure, a display device includes a lower substrate and an upper substrate. The upper substrate is opposite the lower substrate. An upper reflection-preventing layer is disposed on the upper substrate. An upper color-compensating layer is disposed between the upper substrate and the upper reflection-preventing layer. The upper color-compensating layer contains a blue dye.

In a further aspect of the present disclosure, a display device having an emitting area and a transmitting area includes first and second substrates facing each other, the first substrate extending to the transmitting area of the second substrate; a light-emitting structure at the emitting area of the first substrate; and an anti-reflection (AR) structure disposed on at least one of the first and second substrates, the AR structure including a reflection-preventing layer and a color-compensating layer having a blue dye.

An upper support layer may be disposed between the upper color-compensating layer and the upper reflection-preventing layer.

The upper color-compensating layer may be in direct contact with the upper substrate. The upper color-compensating layer may contain an adhesive material.

A lower reflection-preventing layer may be disposed on the lower substrate. A lower adhesive layer may be disposed between the lower substrate and the lower reflection-preventing layer.

The upper color-compensating layer may have a thickness greater than a thickness of the lower adhesive layer.

The blue dye may be contained in the upper color-compensating layer in a content that is greater than 0% and is less than or equal to 0.15%.

The upper color-compensating layer may further contain a blue pigment.

DETAILED DESCRIPTION

The details of the above objects, technical configurations, and effects of the present disclosure will be clearly understood from the following detailed description taken in conjunction with the accompanying drawings showing aspects of the present disclosure. Although aspects of the present disclosure will be described, it will be apparent that the technical spirit of the present disclosure can be practiced by those skilled in the art without being restricted or limited to the aspects.

Further, throughout the specification, the same reference numerals represent the same components, and in the drawings, the length and thickness of layers or areas may be exaggerated for the sake of convenience. In addition, when a first element is referred to as being “on” a second element, it can be directly on the second element or be indirectly on the second element with a third element interposed therebetween.

It will be understood that the terms “first” and “second” are used herein to describe various elements and are only used to distinguish one element from another element. Thus, a first element may be termed a second element, and similarly, a second element may be termed a first element without departing from the teachings of the present disclosure.

Terms used in the following description are used only to describe the specific aspects and are not intended to restrict the present disclosure. The expression of singularity includes a plural meaning unless the singularity expression is explicitly different in context. In the specification, the terms “comprising,” “including,” and “having” shall be understood to designate the presence of particular features, numbers, steps, operations, elements, parts, or combinations thereof but not to preclude the presence or addition of one or more other features, numbers, steps, operations, elements, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, which include technical or scientific terms, have the same meanings as those generally appreciated by those skilled in the art. The terms, such as ones defined in common dictionaries, should be interpreted as having the same meanings as terms in the context of pertinent technology, and should not be interpreted as having ideal or excessively formal meanings unless clearly defined in the specification.

EXAMPLES

FIG. 1is a cross-sectional view schematically illustrating a display device according to an aspect of the present disclosure.FIG. 2is an enlarged view of region P inFIG. 1.

Referring toFIGS. 1 and 2, a display device according to the aspect of the present disclosure may include a lower substrate100, a thin-film transistor200, a light-emitting structure500, an upper substrate700, and an upper anti-reflection (AR) structure901.

The lower substrate100may support the thin-film transistor200and the light-emitting structure500. The lower substrate100may include an insulating material. The lower substrate100may include a transparent material. For example, the lower substrate100may include glass or plastic.

The lower substrate100may include pixel areas PA. Each of the pixel areas PA may display a unique color. The adjacent pixel areas PA may display different colors from each other. For example, the lower substrate100may include a blue pixel area PA for displaying blue, a red pixel area PA for displaying red, a green pixel area PA for displaying green, and a white pixel area PA for displaying white.

Each of the pixel areas PA may include an emitting area EA and a transmitting area TA. For example, the display device according to the aspect of the present disclosure may be a transparent display device.

The thin-film transistor200may be disposed on the emitting area EA of the lower substrate100. For example, the thin-film transistor200may include a semiconductor pattern210, a gate insulating film220, a gate electrode230, an interlayer insulating film240, a source electrode250, and a drain electrode260.

The semiconductor pattern210may be disposed close to the lower substrate100. The semiconductor pattern210may include a semiconductor material. For example, the semiconductor pattern210may include amorphous silicon or polycrystalline silicon. The semiconductor pattern210may include an oxide semiconductor material. For another example, the semiconductor pattern210may include IGZO.

The semiconductor pattern210may include a source area, a drain area, and a channel area. The channel area may be disposed between the source area and the drain area. The conductivity of the channel area may be lower than the conductivity of the source area and the conductivity of the drain area. For example, the source area and the drain area may include conductive impurities.

The display device according to the aspect of the present disclosure is described that the lower substrate100and the semiconductor pattern210of the thin-film transistor200are in direct contact with each other. However, a display device according to another aspect of the present disclosure may further include a buffer insulating film, which is interposed between the lower substrate100and the thin-film transistor200. The buffer insulating film may include an insulating material. For example, the buffer insulating film may include silicon oxide.

The gate insulating film220may be disposed on the semiconductor pattern210. The gate insulating film220may include an insulating material. For example, the gate insulating film220may include silicon oxide and/or silicon nitride. The gate insulating film220may include a high-K dielectric material. For another example, the gate insulating film220may include a hafnium oxide (HfO) or titanium oxide (TiO). The gate insulating film220may have a multi-layer structure.

The gate electrode230may be disposed on the gate insulating film220. The gate electrode230may overlap the channel area of the semiconductor pattern210. The gate electrode230may be insulated from the semiconductor pattern210by the gate insulating film220. For example, the gate insulating film220may include a side surface being continuous with the side surface of the gate electrode230. The side surface of the gate electrode230may be vertically aligned with the side surface of the gate insulating film220.

The gate electrode230may include an electrically conductive material. For example, the gate electrode230may include a metal such as aluminum (Al), chrome (Cr), molybdenum (Mo) and tungsten (W). The gate electrode230may have a multi-layer structure.

The interlayer insulating film240may be disposed on the semiconductor pattern210and the gate electrode230. The interlayer insulating film240may extend to the outside of the semiconductor pattern210. The gate electrode230and the semiconductor pattern210may be covered with the interlayer insulating film240. For example, the interlayer insulating film240may extend onto the transmitting area TA of the lower substrate100.

The interlayer insulating film240may include an insulating material. For example, the interlayer insulating film240may include silicon oxide.

The source electrode250and the drain electrode260may be disposed on the interlayer insulating film240. The source electrode250may be electrically connected to the source area of the semiconductor pattern210. The drain electrode260may be electrically connected to the drain area of the semiconductor pattern210. For example, the interlayer insulating film240may include a contact hole for exposing the source area of the semiconductor pattern210, and a contact hole for exposing the drain area of the semiconductor pattern210. The drain electrode260may be spaced apart from the source electrode250.

The source electrode250and the drain electrode260may include an electrically conductive material. For example, the source electrode250and the drain electrode260may include a metal such as aluminum (Al), chrome (Cr), molybdenum (Mo) and tungsten (W). The drain electrode260may include the same material as the source electrode250. The source electrode250may be a multi-layer structure. For example, the source electrode250may include a lower source electrode251and an upper source electrode252disposed on the lower source electrode251. The structure of the drain electrode260may be the same as that of the source electrode250. For example, the drain electrode260may include a lower drain electrode261and an upper drain electrode262disposed on the lower drain electrode261.

The display device according to the aspect of the present disclosure is described that the thin-film transistor200includes the interlayer insulating film240disposed between the gate electrode230and the source electrode250, and between the gate electrode230and the drain electrode260. However, a display device according to another aspect of the present disclosure may include a thin-film transistor200in which the semiconductor pattern210is disposed between the gate electrode230and the source electrode250, and between the gate electrode230and the drain electrode260.

The organic light-emitting display device according to the aspect of the present disclosure may further include a lower protective film130disposed on the thin-film transistor200. The lower protective film130may prevent external moisture or hydrogen from entering the thin-film transistor200. The thin-film transistor200may be covered with the lower protective film130. The lower protective film130may extend onto the transmitting area TA of the lower substrate100. For example, the lower protective film130may be in direct contact with the interlayer insulating film240in the region on the transmitting area TA of the lower substrate100. The lower protective film130may include an insulating material. For example, the lower protective film130may include silicon oxide and/or silicon nitride.

The display device according to the aspect of the present disclosure may further include an auxiliary electrode310in order to prevent brightness non-uniformity due to a voltage drop. The auxiliary electrode310may be disposed on the emitting area EA of the lower substrate100. For example, the auxiliary electrode310may be disposed on the thin-film transistor200. The auxiliary electrode310may include an electrically conductive material. For another example, the auxiliary electrode310may include a metal such as copper (Cu), molybdenum (Mo), titanium (Ti), aluminum (Al), and tungsten (W). The auxiliary electrode310may be a multi-layer structure. For another example, the auxiliary electrode310may include a lower auxiliary electrode311and an upper auxiliary electrode312disposed on the lower auxiliary electrode311.

The display device according to the aspect of the present disclosure may further include a lower overcoat layer140disposed between the lower protective film130and the auxiliary electrode310. The lower overcoat layer140may serve to remove a thickness difference by the thin-film transistor200. For example, the top surface of the lower overcoat layer140, which is opposite the lower substrate100, may be a flat surface. The top surface of the lower overcoat layer140may be parallel to the surface of the lower substrate100. The lower overcoat layer140may extend onto the transmitting area TA of the lower substrate100. The lower overcoat layer140may include an insulating material. For example, the lower overcoat layer140may include an organic insulating material.

The organic light-emitting display device according to the aspect of the present disclosure may further include an auxiliary clad layer410disposed on the auxiliary electrode310. The auxiliary clad layer410may serve to prevent damage to the auxiliary electrode310attributable to post-processing. For example, the auxiliary electrode310may be covered by the auxiliary clad layer410. The auxiliary clad layer410may include an electrically conductive material. The auxiliary clad layer410may include a material having low reactivity. For another example, the auxiliary clad layer410may include a transparent and electrically conductive material such as ITO.

The light-emitting structure500may be disposed on the auxiliary clad layer410. The light-emitting structure500may generate light displaying a unique color. For example, the light-emitting structure500may include a lower light-emitting electrode510, a light-emitting layer520, and an upper light-emitting electrode530, which are stacked sequentially.

The display device according to the aspect of the present disclosure may further include an upper overcoat layer150disposed between the auxiliary clad layer410and a light-emitting structure500. The upper overcoat layer150may serve to remove a thickness difference by the auxiliary electrode310. For example, the top surface of the upper overcoat layer150, which is opposite the lower substrate100, may be a flat surface. The top surface of the upper overcoat layer150may be parallel to the top surface of the lower overcoat layer140. The upper overcoat layer150may extend onto the transmitting area TA of the lower substrate100. The upper overcoat layer150may include an insulating material. For example, the upper overcoat layer150may include an organic insulating material. The upper overcoat layer150may include a material different from that of the lower overcoat layer140.

The light-emitting structure500may be controlled by the thin-film transistor200. For example, the lower light-emitting electrode510of the light-emitting structure500may be electrically connected to the drain electrode260of the thin-film transistor200. The upper overcoat layer150may include an upper through-hole151h, through which the lower light-emitting electrode510extends. The lower overcoat layer140may include a lower contact hole140h, which overlaps the drain electrode260of the thin-film transistor200. The lower protective film130may include a contact hole, which overlaps the lower contact hole140h.

The display device according to the aspect of the present disclosure may further include a connection electrode320disposed between the lower overcoat layer140and the upper overcoat layer150. The connection electrode320may connect the lower light-emitting electrode510of the light-emitting structure500to the drain electrode260of the thin-film transistor200. The lower through-hole140hand the upper through-hole151hmay overlap the connection electrode320. The lower light-emitting electrode510may be connected to the connection electrode320through the upper through-hole151h. The connection electrode320may be connected to the drain electrode260through the lower through-hole140h. The upper through-hole151hmay be spaced apart from the lower through-hole140h. The connection electrode320may include an electrically conductive material. For example, the connection electrode320may include a metal such as copper (Cu), molybdenum (Mo), titanium (Ti), aluminum (Al), and tungsten (W). The connection electrode320may include the same material as the auxiliary electrode310. The connection electrode320may have a multi-layer structure. For example, the structure of the connection electrode320may be the same as that of the auxiliary electrode310. The connection electrode320may include a lower connection electrode321and an upper connection electrode322disposed on the lower connection electrode321.

The organic light-emitting display device according to the aspect of the present disclosure may further include a connection clad layer420disposed between the connection electrode320and the upper overcoat layer150. The connection clad layer420may cover the connection electrode320. The connection clad layer420may include an electrically conductive material. For example, the connection clad layer420may include the same material as the auxiliary clad layer310. The connection clad layer420may include a transparent and electrically conductive material such as ITO.

The lower light-emitting electrode510may include an electrically conductive material. The lower light-emitting electrode510may include a material having high reflectivity. For example, the lower light-emitting electrode510may include a metal such as aluminum (Al) and silver (Ag). The lower light-emitting electrode510may have a multi-layer structure. For example, the lower light-emitting electrode510may be structured such that a reflective electrode including a material having high reflectivity is disposed between transparent electrodes, each including a transparent and electrically conductive material such as ITO.

The light-emitting layer520may generate light having a brightness corresponding to the voltage difference between the lower light-emitting electrode510and the upper light-emitting electrode530. For example, the light-emitting layer520may include an emitting material layer (EML) including a light-emitting material. The light-emitting material may include an organic light-emitting material, an inorganic light-emitting material or a hybrid light-emitting material. For example, the display device according to the aspect of the present disclosure may be an organic light-emitting display device that includes a light-emitting layer520having an organic light-emitting material.

The light-emitting layer520may be a multi-layer structure. For example, the light-emitting layer520may further include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL).

The upper light-emitting electrode530may include an electrically conductive material. The upper light-emitting electrode530may include a material different from that of the lower light-emitting electrode510. For example, the upper light-emitting electrode530may be a transparent electrode. Accordingly, the organic light-emitting display device according to the aspect of the present disclosure may emit the light generated by the light-emitting layer520through the upper light-emitting electrode530.

The display device according to the aspect of the present disclosure may further include a bank insulating film160for insulating between the light-emitting structures500disposed on the adjacent pixel areas PA. For example, the bank insulating film160may cover an edge of the lower light-emitting electrode510of each of the light-emitting structures500. The bank insulating film160may extend onto the transmitting area TA of the lower substrate100. The light-emitting layer520and the upper light-emitting electrode530may be stacked on the surface of the lower light-emitting electrode510that is exposed through the bank insulating film160. The bank insulating film160may include an insulating material. For example, the bank insulating film160may include an organic insulating material such as benzocyclobutene (BCB), poly-imide or photoacryl. The lower overcoat layer140and the upper overcoat layer150may include a material different from that of the bank insulating film150.

The light-emitting layer520and the upper light-emitting electrode530may extend onto the bank insulating film160. For example, the light-emitting layer520and the upper light-emitting electrode530may extend onto the transmitting area TA of the lower substrate100. The upper light-emitting electrode530may be electrically connected to the auxiliary electrode310. Thus, in the display device according to the aspect of the present disclosure, the auxiliary electrode310can prevent brightness non-uniformity attributable to a voltage drop of the upper light-emitting electrode530.

The display device according to the aspect of the present disclosure may further include a partition wall600for providing a space in which the upper light-emitting electrode530is electrically connected to the auxiliary electrode310. For example, a portion of the light-emitting layer520may be separated from the remaining area by the partition wall600. The upper light-emitting electrode530may be electrically connected to the auxiliary electrode310through the space between the areas of the light-emitting layer520that are separated from each other by the partition wall600. The vertical distance of the partition wall600may be greater than the vertical thickness of the bank insulating film160. For example, the partition wall600may include a lower partition wall610and an upper partition wall620disposed on the lower partition wall610. The lower partition wall610and the upper partition wall620may include an insulating material. For another example, the lower partition wall610may include the same material as the bank insulating film160. The upper partition wall620may include a material different from that of the lower partition wall610. For example, the upper partition wall620may include silicon oxide and/or silicon nitride.

The display device according to the aspect of the present disclosure may further include an intermediate electrode550disposed between the auxiliary electrode310and the bank insulating film160. The intermediate electrode550may be electrically connected to the auxiliary electrode310. For example, the upper overcoat layer150may include an upper through-hole152hexposing a portion of the auxiliary electrode310. The partition wall600may overlap the intermediate electrode550. For example, the light-emitting layer520may expose a portion of the intermediate electrode550by the partition wall600. The bank insulating film160may cover an edge of the intermediate electrode550. The partition wall600may be disposed between adjacent bank insulating films160. The upper light-emitting electrode530may be in contact with the portion of the intermediate electrode550on which the light-emitting layer520is not formed due to the partition wall600. The upper light-emitting electrode530may be electrically connected to the auxiliary electrode310through the intermediate electrode550. The intermediate electrode550may include an electrically conductive material. For example, the intermediate electrode550may include the same material as the lower light-emitting electrode510. The intermediate electrode550may be a multi-layer structure. For example, the structure of the intermediate electrode550may be the same as that of the lower light-emitting electrode510.

The upper substrate700may be opposite the lower substrate100. For example, the upper substrate700may be disposed on the light-emitting structure500. The upper substrate700may extend onto the transmitting area TA of the lower substrate100. The emitting area EA and the transmitting area TA of the lower substrate100may overlap the upper substrate700.

The upper substrate700may include an insulating material. The upper substrate700may include a transparent material. For example, the upper substrate700may include glass or plastic. The upper substrate700may include the same material as the lower substrate100.

In the display device according to the aspect of the present disclosure, the light-emitting structures500of the respective pixel areas may display the same color. For example, the light-emitting structure500of each of the pixel areas may include a white light-emitting layer520. The display device according to the aspect of the present disclosure may further include a black matrix710and a color filter720disposed on the upper substrate700. Thus, in the display device according to the aspect of the present disclosure, the pixel areas in which the light-emitting structures500displaying the same color are respectively disposed may display different colors from each other. The black matrix710may overlap the bank insulating film160. The color filter720may be disposed between the adjacent black matrices710. For example, the color filter720may overlap a portion of the lower light-emitting electrode510that is exposed by the bank insulating film160.

The display device according to the aspect of the present disclosure may further include a filler800filling the space between the lower substrate100and the upper substrate700. The filler800may prevent damage to the light-emitting structure500due to external shocks. For example, the filler800may extend between the light-emitting structure500and the black matrix710, and between the light-emitting structure500and the color filter720. The filler800may extend onto the transmitting area TA of the lower substrate100.

The display device according to the aspect of the present disclosure is described that the light-emitting structure500is in direct contact with the filler800. However, a display device according to another aspect of the present disclosure may further include an upper protecting film disposed between the light-emitting structure500and the filler800. The upper protecting film may serve to prevent external moisture from entering the light-emitting structure500. The upper protecting film may be a multi-layer structure. For example, the upper protecting film may have a structure in which an inorganic film including an inorganic material and an organic film including an organic material are stacked.

The upper AR structure901may be disposed on the upper substrate700. For example, the upper AR structure901may be disposed on the outer surface of the upper substrate700. The upper AR structure901may include an upper adhesive layer911, an upper reflection-preventing structure921, and an upper color-compensating layer931.

The upper adhesive layer911may be disposed close to the upper substrate700. The upper adhesive layer911may include an adhesive material. For example, the upper adhesive layer911may be in direct contact with the upper substrate700. The upper AR structure901may be adhered onto the upper substrate700by the upper adhesive layer911.

The upper reflection-preventing structure921may serve to prevent the reflection of external light. For example, the upper reflection-preventing structure921may include an upper support layer921a, an upper reflection-preventing layer921b, and an upper hard coating layer921c, which are stacked sequentially. The upper support layer921amay support the upper reflection-preventing layer921b. For example, the upper support layer921amay include polyethylene terephthalate (PET) or triacetate cellulose (TAC). The upper reflection-preventing layer921bmay include a polarizing material. For example, the upper reflection-preventing layer921bmay include a ¼ phase retardation plate. The hard coating layer921cmay prevent damage to the upper reflection-preventing layer921b.

The upper color-compensating layer931may serve to compensate for color variation attributable to the insulating films240,130,140,150and160stacked on the transmitting area TA. For example, the upper color-compensating layer931may be disposed between the upper adhesive layer911and the upper reflection-preventing structure921. The upper color-compensating layer931may be in direct contact with the upper adhesive layer911and the upper support layer921a. The upper color-compensating layer931may include a dye having a color that complements the color realized by the insulating films240,130,140,150and160stacked on the transmitting area TA. For example, the upper color-compensating layer931may include a blue dye.

Table 1 shows a change ΔT in transmittance and a color of the transmitting area TA in accordance with the content of blue dye in the upper color-compensating layer931in the display device according to the aspect of the present disclosure. Here, the value of b* is a numerical value that represents the color of the transmitting area TA. For example, a higher value of b* in the (+) direction represents a deeper yellow. Conversely, a higher value of b* in the (−) direction represents a deeper blue.

Referring to Table 1, when the content of blue dye in the upper color-compensating layer931is 0%, the transmittance of the transmitting area TA may be improved due to the refractive index of the upper reflection-preventing structure921, but the transmitting area TA may appear yellow. When the content of blue dye in the upper color-compensating layer931is increased, the yellow color of the transmitting area TA may become lighter and the transmittance of the transmitting area TA may be deteriorated. When the content of blue dye in the upper color-compensating layer931is greater than 0% and is less than or equal to 10%, the transmittance of the transmitting area TA is deteriorated by 0.3% to 0.4% per unit percentage of content. When the content of blue dye in the upper color-compensating layer931is in the range from 10% to 15%, the transmittance of the transmitting area TA is deteriorated by 0.7% per unit percentage of content. Further, when the content of blue dye in the upper color-compensating layer931is 10% or more, the transmitting area TA may appear blue.

Therefore, the display device according to the aspect of the present disclosure, in which the upper AR structure901disposed on the upper substrate700includes the upper reflection-preventing layer921band the upper color-compensating layer931, has an effect of improving the transparency of the transmitting area TA without deteriorating the transmittance of the transmitting area TA by adjusting the content of blue dye in the upper color-compensating layer931so as to be greater than 0% and to be less than or equal to 10%.

Accordingly, in the display device according to the aspect of the present disclosure, the upper color-compensating layer931may have a relatively small thickness in order to achieve high transmittance. For example, the thickness of the upper color-compensating layer931may be smaller than the thickness of the upper adhesive layer911or the thickness of the upper reflection-preventing structure921. The upper color-compensating layer931may be thinner than the upper reflection-preventing layer921b. For example, the upper color-compensating layer931may have a thickness of approximately 1 μm.

The display device according to the aspect of the present disclosure is described that the upper color-compensating layer931includes a blue dye. However, a display device according to another aspect of the present disclosure may be constituted such that the upper color-compensating layer931includes a blue pigment. Alternatively, a display device according to another aspect of the present disclosure may be constituted such that the upper color-compensating layer931includes both a blue dye and a blue pigment.

The display device according to the aspect of the present disclosure is described that the upper color-compensating layer931is disposed between the upper adhesive layer911and the upper reflection-preventing structure921. However, a display device according to another aspect of the present disclosure may include the upper color-compensating layer931disposed inside the upper reflection-preventing structure921. For example, the display device according to the aspect of the present disclosure, as shown inFIG. 3, may include an upper color-compensating layer931disposed between the upper support layer921aand the upper reflection-preventing layer921b. Alternatively, the display device according to the aspect of the present disclosure, as shown inFIG. 4, may include the upper color-compensating layer931disposed between the upper reflection-preventing layer921band the upper hard coating layer921c. Thus, in the display device according to the aspects of the present disclosure, the position of the upper color-compensating layer931may be determined in accordance with convenience in processing. As a result, the display device according to the aspects of the present disclosure has an effect of greatly improving the transparency of the transmitting area TA.

The display device according to the aspect of the present disclosure is described that the upper AR structure901is disposed only on the upper substrate700. However, as shown inFIG. 5, a display device according to another aspect of the present disclosure may include a lower AR structure902disposed on the lower substrate100. The lower AR structure902may be disposed on the outer surface of the lower substrate100. For example, the lower AR structure902may include a lower adhesive layer912and a lower reflection-preventing structure922. The structure of the lower reflection-preventing structure922may be the same as that of the upper reflection-preventing structure921. Accordingly, the display device according to the aspect of the present disclosure may have an effect of preventing deterioration of the transmittance of the transmitting area TA and greatly improving the transparency of the transmitting area TA.

The display device according to the above aspect of the present disclosure is described that the lower AR structure902disposed on the lower substrate100includes the lower adhesive layer912and the lower reflection-preventing structure922. However, a display device according to a further aspect of the present disclosure, as shown inFIG. 6, may comprises that the lower AR structure902further includes a lower color-compensating layer932disposed between the lower adhesive layer912and the lower reflection-preventing structure922. The lower color-compensating layer932may be equal to the upper color-compensating layer931of the upper AR structure901. For example, the lower color-compensating layer932may include a blue dye. The content of blue dye in the lower color-compensating layer932may be greater than 0% and may be less than or equal to 10%. For example, the content of blue dye in the lower color-compensating layer932may be equal to the content of blue dye in the upper color-compensating layer931. The thickness of the lower color-compensating layer932may be equal to the thickness of the upper color-compensating layer931. For example, the thickness of the lower color-compensating layer932may be approximately 1 μm. Accordingly, the display device of this aspect may have an effect of preventing deterioration of the transmittance of the transmitting area TA and of efficiently adjusting the color of the transmitting area TA.

The display device according to the aspect of the present disclosure is described that the upper color-compensating layer931containing a blue dye is disposed between the upper adhesive layer911and the upper reflection-preventing structure921. However, a display device according to the aspect of the present disclosure, as shown inFIG. 7, may include an upper color-compensating layer941, which is in direct contact with the upper substrate700. The upper color-compensating layer941may contain an adhesive material. In the display device of this aspect, the upper reflection-preventing structure921may be adhered to the upper substrate700by means of the upper color-compensating layer941. Here, the upper color-compensating layer941may be formed to have a relatively large thickness in order to achieve sufficient adhesive force. For example, the upper color-compensating layer941may have a thickness of approximately 250 μm. Accordingly, the display device of this aspect may have an effect of efficiently adjusting the color of the transmitting area TA.

The display device according to the above aspect of the present disclosure is described as including only the upper color-compensating layer941that is in direct contact with the upper substrate700. However, as shown inFIG. 8, the display device according to a further aspect of the present disclosure may further include a lower AR structure902, which is disposed on the lower substrate100. The lower AR structure902may include a lower adhesive layer912and a lower reflection-preventing structure922. The lower adhesive layer912may not contain a dye. For example, the thickness of the lower adhesive layer912may be smaller than that of the upper color-compensating layer941.

Table 2 shows a change ΔT in transmittance and a color of the transmitting area TA in accordance with the content of blue dye in the upper color-compensating layer941in the display device according to the aspect of the present disclosure shown inFIG. 8.

Referring to Table 2, when the content of blue dye in the upper color-compensating layer941is greater than 0% and is less than or equal to 0.15%, it is possible to prevent deterioration of the transmittance of the transmitting area TA. Accordingly, the display device according to the aspect of the present disclosure shown inFIG. 8, in which the upper AR structure901is disposed on the upper substrate700and the lower AR structure902is disposed on the lower substrate100, has an effect of improving the transparency of the transmitting area TA without deteriorating the transmittance of the transmitting area TA by adjusting the content of blue dye in the upper color-compensating layer941of the upper AR structure901so as to be greater than 0% and to be less than or equal to 0.15%.

The display device according to the aspect of the present disclosure, as shown inFIG. 8, is described as being constituted such that the lower reflection-preventing structure922is adhered to the lower substrate100by means of the lower adhesive layer912. However, as shown inFIG. 9, the display device according to a further aspect of the present disclosure may be constituted such that the lower AR structure902includes a lower color-compensating layer942containing a blue dye and an adhesive material and a lower reflection-preventing structure922disposed on the lower color-compensating layer942. The thickness of the lower color-compensating layer942may be equal to that of the upper color-compensating layer941. Accordingly, the display device of this aspect may have an effect of improving transparency without deteriorating transmittance.

The display devices according to the above aspects of the present disclosure are described as being constituted such that the lower AR structure902disposed on the lower substrate100and the upper AR structure901disposed on the upper substrate700include the color-compensating layers931,932,941and942having the same configuration. However, a display device according to another aspect of the present disclosure may be constituted such that the upper AR structure901and the lower AR structure902include color-compensating layers931,932,941and942having different configurations. For example, the display device of this aspect may be constituted such that the upper AR structure901has a structure in which an upper color-compensating layer931is disposed between the upper adhesive layer911and the upper reflection-preventing structure921, and the lower AR structure902has a structure in which the lower reflection-preventing structure922is adhered to the lower substrate100by means of the lower color-compensating layer942. In the display device of this aspect, the configurations of the upper AR structure901and the lower AR structure902may be determined in accordance with convenience in processing and efficiency. As a result, the display device of this aspect has an effect of efficiently improving the color that is implemented by the insulating films stacked on the transmitting area.

As is apparent from the above description, a display device according to the present disclosure may be constituted such that an upper AR structure, which includes an upper reflection-preventing layer and an upper color-compensating layer, is disposed on an upper substrate. The upper color-compensating layer may contain a blue dye. Accordingly, the display device according to the present disclosure may have an effect of adjusting a color that is implemented by insulating films stacked on a transmitting area and preventing deterioration of transmittance. In addition, the display device according to the present disclosure may have an effect of improving transparency without deteriorating transmittance.