Display device

Abstract

There is provided a display device including: a first base layer including a first display area including a first pixel area and a second display area at least partially surrounded by the first display area and including a transmission area and a second pixel area; a first barrier layer disposed on the first base layer and including a first inorganic layer having a first thickness and a second inorganic layer having a second thickness thinner than the first thickness; a second base layer disposed on the first barrier layer; a second barrier layer disposed on the second base layer and including a third inorganic layer having a third thickness and a fourth inorganic layer having a fourth thickness thinner than the third thickness; and a plurality of pixels disposed in the first pixel region and the second pixel region on the second barrier layer.

Description

Technical Field

[0001] The present invention relates to a display device, and more particularly, to a display device for providing information. Background Art

[0002] As information technology develops, the importance of display devices as a communication medium between users and information is becoming prominent. Therefore, the use of display devices such as liquid crystal display devices, organic light emitting display devices, plasma display devices, etc. is increasing.

[0003] Meanwhile, various functional modules that can be used with the display device are added to the display device. For example, a user can use a camera module provided inside the display device to take photos, videos, etc. Summary of the invention

[0004] In an embodiment, a display device that improves the quality of an image displayed through a function module (eg, a camera module) is provided.

[0005] According to an embodiment, a display device includes: a first substrate layer including a first display area and a second display area, the first display area including a first pixel area, the second display area being at least partially surrounded by the first display area and including a transmission area and a second pixel area; a first barrier layer disposed on the first substrate layer and including a first inorganic layer having a first thickness and a second inorganic layer having a second thickness thinner than the first thickness; a second substrate layer disposed on the first barrier layer; a second barrier layer disposed on the second substrate layer and including a third inorganic layer having a third thickness and a fourth inorganic layer having a fourth thickness thinner than the third thickness; and a plurality of pixels disposed in the first pixel area and the second pixel area on the second barrier layer. Each of the first thickness and the third thickness satisfies the following equation 1, and each of the second thickness and the fourth thickness satisfies the following equation 2: T1=(λ 1 ×m / 2) / n 1 , (Equation 1) T2=(λ 2 ×m / 2) / n 2 , (Equation 2) Wherein, in Equation 1, T1 is the thickness of any one of the first thickness and the third thickness (Å), λ 1 is the first wavelength in the visible light wavelength range, and n 1 is the refractive index of any one of the first inorganic layer and the third inorganic layer. In Equation 2, T2 is the thickness (Å) of any one of the second thickness and the fourth thickness, λ 2 is the second wavelength in the visible light wavelength range, and n 2is the refractive index of any one of the second inorganic layer and the fourth inorganic layer. In Equation 1 and Equation 2, m is a positive integer.

[0006] In an embodiment, the first thickness may be substantially the same as the third thickness, and the second thickness may be substantially the same as the fourth thickness.

[0007] In an embodiment, the first wavelength may be a wavelength of green light, and the second wavelength may be a wavelength of blue light.

[0008] In an embodiment, each of the first thickness, the second thickness, the third thickness, and the fourth thickness may be in a range from about 1000 Å to about 10000 Å.

[0009] In an embodiment, the refractive index of the first base layer may be greater than the refractive index of the first inorganic layer, and the refractive index of the first inorganic layer may be greater than the refractive index of the second inorganic layer.

[0010] In an embodiment, the refractive index of the second base layer may be greater than the refractive index of the third inorganic layer, and the refractive index of the third inorganic layer may be greater than the refractive index of the fourth inorganic layer.

[0011] In an embodiment, the first and third inorganic layers may include silicon oxynitride, and the second and fourth inorganic layers may include silicon oxide.

[0012] In an embodiment, the display device may further include a buffer layer disposed on the second base layer and including an inorganic material.

[0013] In an embodiment, the buffer layer may have a refractive index greater than a refractive index of each of the first inorganic layer, the second inorganic layer, the third inorganic layer, and the fourth inorganic layer.

[0014] In an embodiment, each of the first base layer and the second base layer may include polyimide.

[0015] In an embodiment, each of the first base layer and the second base layer may include silicon nitride.

[0016] In an embodiment, the transmittance of the first display area may be smaller than the transmittance of the second display area.

[0017] In an embodiment, the display device may further include a functional module disposed below the first base layer corresponding to the second display area.

[0018] In an embodiment, the functional module may include at least one of a camera module, a facial recognition sensor module, a pupil recognition sensor module, an acceleration sensor module, a geomagnetic sensor module, a proximity sensor module, an infrared sensor module, and an illumination sensor module.

[0019] According to an embodiment, a display device includes: a first base layer including a first display area and a second display area, the first display area including a first pixel area, the second display area at least partially surrounded by the first display area and including a transmission area and a second pixel area; a first barrier layer disposed on the first base layer and including a first inorganic layer having a first thickness and a second inorganic layer having a second thickness thinner than the first thickness; a second base layer disposed on the first barrier layer; a second barrier layer disposed on the second base layer and including a third inorganic layer having a third thickness and a fourth inorganic layer having a fourth thickness thinner than the third thickness; and a plurality of pixels disposed in the first pixel area and the second pixel area on the second barrier layer. The first thickness is determined by dividing the first wavelength of green light by the refractive index of the first inorganic layer, and the second thickness is determined by dividing the second wavelength of blue light by the refractive index of the second inorganic layer.

[0020] In an embodiment, the first thickness may be in a range of about 2900Å to about 3600Å, and the second thickness may be in a range of about 2700Å to about 3400Å.

[0021] In an embodiment, the refractive index of the first base layer may be greater than the refractive index of the first inorganic layer, and the refractive index of the first inorganic layer may be greater than the refractive index of the second inorganic layer.

[0022] In an embodiment, the refractive index of the second base layer may be greater than the refractive index of the third inorganic layer, and the refractive index of the third inorganic layer may be greater than the refractive index of the fourth inorganic layer.

[0023] In an embodiment, the first and third inorganic layers may include silicon oxynitride, and the second and fourth inorganic layers may include silicon oxide.

[0024] In an embodiment, the display device may further include a buffer layer disposed on the second base layer and including an inorganic material.

[0025] In an embodiment, the buffer layer may have a refractive index greater than a refractive index of each of the first inorganic layer, the second inorganic layer, the third inorganic layer, and the fourth inorganic layer.

[0026] In an embodiment, each of the first base layer and the second base layer may include polyimide.

[0027] In an embodiment, each of the first base layer and the second base layer may include silicon nitride.

[0028] In a display device according to an embodiment, the substrate may include: a first base layer having a relatively high refractive index; a first barrier layer containing an inorganic material; and a second base layer having a relatively high refractive index, and the second barrier layer containing an inorganic material may be disposed on the second base layer. Each of the first barrier layer and the second barrier layer may include a first inorganic layer having a relatively medium refractive index and a second inorganic layer having a relatively small refractive index. The thickness of the first inorganic layer may be determined by the wavelength of green light, a multiple of 1 / 2, and the refractive index of the first inorganic layer. The thickness of the second inorganic layer may be determined by the wavelength of blue light, a multiple of 1 / 2, and the refractive index of the second inorganic layer.

[0029] Therefore, the average transmittance of the transmission area for blue light divided by the average transmittance of the transmission area for green light can be relatively increased. In this case, the yellowish color of an image displayed through a functional module (eg, a camera module) disposed in the transmission area can be minimized or reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Illustrative, non-limiting embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

[0031] Figure 1 is a plan view showing a display device according to an embodiment.

[0032] Figure 2 is a schematic diagram showing a Figure 1 A cross-sectional view of a first display area and a second display area of ​​a display device.

[0033] Figure 3 is a diagram showing a method according to an embodiment of the present invention. Figure 1 A plan view of a portion of a first display area of ​​a display device.

[0034] Figure 4 is a diagram showing a method according to an embodiment of the present invention. Figure 1 A plan view of a portion of a second display area of ​​a display device.

[0035] Figure 5 is a diagram showing a method according to an embodiment of the present invention. Figure 4 An example plan view of area A.

[0036] Figure 6 is a diagram showing a method according to an embodiment of the present invention. Figure 4 A plan view of another example of area A.

[0037] Figure 7 According to the embodiment along Figure 3 A cross-sectional view of a portion of the first display area taken along line II'.

[0038] Figure 8 According to the embodiment along Figure 5 A cross-sectional view of a portion of the second display area taken along line II-II'.

[0039] Fig. 9 is a diagram showing a method according to an embodiment of the present invention. Figure 7 and Figure 8 A cross-sectional view of a substrate and a second barrier layer.

[0040] Fig.10 is a graph showing transmittance of a blocking layer according to a comparative example with respect to a visible light wavelength.

[0041] Fig.11 is a graph showing transmittance of a blocking layer according to an embodiment with respect to visible light wavelengths.

[0042] Fig.12 is a graph showing transmittance of a transmission region with respect to a first wavelength included in a visible light wavelength range according to a comparative example and an example.

[0043] Fig.13 is a graph showing transmittance of a transmission region with respect to a second wavelength included in a visible light wavelength range according to a comparative example and an example. DETAILED DESCRIPTION

[0044] Hereinafter, a display device according to an embodiment of the invention will be described in detail with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals are used for the same components, and redundant descriptions of the same components will be omitted.

[0045] The invention will now be described more fully hereinafter with reference to the accompanying drawings, in which various embodiments are shown. However, the invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those skilled in the art.

[0046] In describing each of the figures, like reference numerals are used for like components. In the figures, the sizes of the structures are exaggerated from actual sizes in order to make the present disclosure clear.

[0047] In the present application, terms such as “include (or include)” or “have” are intended to indicate the presence of features, quantities, steps, operations, components, parts or combinations thereof described in the specification, and it should be understood that this does not preclude the presence or addition of elements, quantities, steps, operations, components, parts or combinations thereof.

[0048] In the present application, when a part of a layer, film, zone, region, plate, etc. is referred to as being "on (or over)" another part or "on the "top" of another part, this includes not only the case where a part of the layer, film, zone, region, plate, etc. is "directly on" the other part, but also the case where another part is between a part of the layer, film, zone, region, plate, etc. and the other part. Conversely, when a part of a layer, film, zone, region, plate, etc. is referred to as being "under (or below)" another part or "at the "bottom" of another part, this includes not only the case where another part is "directly "under" the other part, but also the case where another part is between a part of the layer, film, zone, region, plate, etc. and the other part. In addition, in the present application, setting "on..." may include not only setting on the top, but also setting on the bottom.

[0049] In the present application, "directly disposed" may mean that there is no additional layer, film, zone, region, plate, etc. between one part of a layer, film, zone, region, plate, etc. and another part. For example, "directly disposed" may mean disposed without using an additional component such as a bonding component between two layers or two components. In the accompanying drawings, in order to effectively describe the technical content, the thickness, proportion and size of the elements are exaggerated. As used herein, the term "and / or" includes any combination and all combinations of one or more of the relevant listed items.

[0050] It will be understood that, although the terms first, second, etc. can be used here to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish an element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the scope of the invention, the first element, component, region, layer or part discussed below can be referred to as the second element, component, region, layer or part. Similarly, the second element, component, region, layer or part can be referred to as the first element, component, region, layer or part. As used here, unless the context clearly indicates otherwise, the singular form "one", "one (kind / person)" and "the (the)" are intended to also include plural forms.

[0051] In addition, terms "below", "on the lower side", "above", "on the upper side", etc. may be used to describe the relationship of elements shown in the drawings. These terms have relative concepts and are described based on the directions indicated in the drawings.

[0052] It will also be understood that when the terms "includes," "comprising," and / or "having" are used in this specification, it indicates the presence of stated features, integers, steps, operations, elements, components, and / or groups thereof, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0053] As used herein, "about" or "approximately" is inclusive of the stated value and means within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0054] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. It will also be understood that terms (such as those defined in common dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0055] Figure 1 is a plan view showing a display device according to an embodiment. Figure 2 is a schematic diagram showing a Figure 1 A cross-sectional view of a first display area and a second display area of ​​a display device.

[0056] Reference Figure 1 and Figure 2 , the display device DD according to the embodiment may include a substrate SUB, a display part DP, an anti-reflection layer RCL, and a cover window CW.

[0057] In an embodiment, the display device DD may include a first display area DA1, a second display area DA2, and a non-display area NDA. Each of the first display area DA1 and the second display area DA2 may display an image. The non-display area NDA may not display an image. The non-display area NDA may be located around the first display area DA1. For example, the non-display area NDA may surround at least a portion of the first display area DA1.

[0058] In an embodiment, a plurality of pixels PX may be disposed in each of the first display area DA1 and the second display area DA2. The plurality of pixels PX may be disposed in a matrix along a first direction DR1 and a second direction DR2 intersecting the first direction DR1. Each of the plurality of pixels PX may include a transistor and a light emitting element electrically connected to the transistor. Therefore, each of the plurality of pixels PX may emit light of a specific color (e.g., red, green, blue, etc.).

[0059] In an embodiment, the second display area DA2 may include a transmission area through which external light is transmitted. Because the second display area DA2 includes a transmission area through which external light is transmitted, the transmittance of the second display area DA2 may be greater than the transmittance of the first display area DA1. That is, the transmittance of the first display area DA1 may be less than the transmittance of the second display area DA2. In other words, the second display area DA2 may transmit external light incident in the second display area DA2 while displaying an image.

[0060] In an embodiment, the first display area DA1 and the second display area DA2 may be positioned adjacent to each other. In an embodiment, the first display area DA1 may surround at least a portion of the second display area DA2. For example, the second display area DA2 may be located within the display device DD and spaced apart from an edge of the display device DD in a plan view, and the first display area DA1 may surround the entire second display area DA2.

[0061] In an embodiment, the second display area DA2 may have a density of pixels PX smaller than that of the first display area DA1. That is, the second display area DA2 may have a smaller number of pixels PX per unit area than that of the first display area DA1.

[0062] In an embodiment, the second display area DA2 may have a circular planar shape. However, the embodiment is not limited thereto, and the second display area DA2 may have various polygonal planar shapes.

[0063] In an embodiment, a plurality of drivers may be provided in the non-display area NDA. For example, the driver may include a gate driver, an emission control driver, a data driver, etc. The driver may provide a gate signal, a data signal, an emission control signal, etc. to the pixel PX.

[0064] In an embodiment, the display part DP may be disposed on the substrate SUB. The display part DP may overlap the first display area DA1 and the second display area DA2. The display part DP may include a plurality of pixels PX to display an image. A detailed description of the display part DP will be described later.

[0065] In an embodiment, the function module FM may be disposed under the substrate SUB corresponding to the second display area DA2. The function module FM may receive external light passing through the second display area DA2. In an embodiment, the function module FM may include a camera module for capturing (or recognizing) an image of an object located in front of the display device DD, a facial recognition sensor module for detecting a user's face, a pupil recognition sensor module for detecting a user's pupil, an acceleration sensor module and a geomagnetic sensor module for determining movement of the display device DD, a proximity sensor module and an infrared sensor module for detecting the approach of the front of the display device DD, and / or an illumination sensor module for measuring an external brightness level, etc.

[0066] In an embodiment, an anti-reflection layer RCL may be disposed on the display portion DP. The anti-reflection layer RCL may overlap the first display area DA1 and the second display area DA2. External light reflection may be reduced by the anti-reflection layer RCL. For example, the anti-reflection layer RCL may include a polarization layer and a phase delay layer. Optionally, the anti-reflection layer RCL may include a black matrix and a color filter.

[0067] In an embodiment, a cover window CW may be disposed on the anti-reflection layer RCL. The cover window CW may overlap the first display area DA1 and the second display area DA2. The cover window CW may be disposed on the display part DP to protect the display part DP. The cover window CW may include a transparent material. For example, the cover window CW may include a glass substrate or a polymer substrate.

[0068] In this specification, a plane may be defined as a plane defined by a first direction DR1 and a second direction DR2 intersecting the first direction DR1. For example, the first direction DR1 and the second direction DR2 may be perpendicular to each other. In addition, the third direction DR3 may be perpendicular to the plane.

[0069] Figure 3 is a diagram showing a method according to an embodiment of the present invention. Figure 1 A plan view of a portion of a first display area of ​​a display device. Figure 4 is a diagram showing a method according to an embodiment of the present invention. Figure 1 A plan view of a portion of a second display area of ​​a display device.

[0070] In the examples and with reference to Figure 2 , Figure 3 and Figure 4 , the first display area DA1 may include a plurality of first pixel areas PA1, and the second display area DA2 may include a plurality of second pixel areas PA2 and a plurality of transmission areas TA. The transmission area TA may be located between the second pixel areas PA2.

[0071] In an embodiment, a plurality of pixels PX may be disposed in the first pixel area PA1. In addition, a plurality of pixels PX may be disposed in the second pixel area PA2. Specifically, one pixel may be disposed in each of the first pixel areas PA1, and one pixel may be disposed in each of the second pixel areas PA2.

[0072] In an embodiment, each of the plurality of pixels PX may include a plurality of sub-pixels emitting light of different colors. For example, each of the plurality of pixels PX may include a red sub-pixel PXR emitting red light, a green sub-pixel PXG emitting green light, and a blue sub-pixel PXB emitting blue light.

[0073] For example, in an embodiment, one red subpixel PXR, one green subpixel PXG, and one blue subpixel PXB may be disposed in each of the first pixel region PA1. In addition, one red subpixel PXR, one green subpixel PXG, and one blue subpixel PXB may be disposed in each of the second pixel region PA2.

[0074] In an embodiment, in the first pixel area PA1, the red sub-pixel PXR may be disposed adjacent to the blue sub-pixel PXB in the first direction DR1, and the green sub-pixel PXG may be disposed adjacent to the blue sub-pixel PXB in the first direction DR1. In addition, the red sub-pixel PXR and the green sub-pixel PXG may overlap each other in the second direction DR2 in a plan view. That is, the blue sub-pixel PXB may be located to the left of each of the red sub-pixel PXR and the green sub-pixel PXG.

[0075] Likewise, in the embodiment, in the second pixel area PA2, the red sub-pixel PXR may be disposed adjacent to the blue sub-pixel PXB in the first direction DR1, and the green sub-pixel PXG may be disposed adjacent to the blue sub-pixel PXB in the first direction DR1. In addition, the red sub-pixel PXR and the green sub-pixel PXG may overlap each other in the second direction DR2 in a plan view. That is, the blue sub-pixel PXB may be located to the left of each of the red sub-pixel PXR and the green sub-pixel PXG.

[0076] However, the invention is not limited thereto, and the red sub-pixels PXR, the green sub-pixels PXG, and the blue sub-pixels PXB in the first and second pixel regions PA1 and PA2 may be arranged in various ways.

[0077] In the embodiments and as Figure 3 and Figure 4As shown in , the arrangement of the plurality of sub-pixels disposed in each of the first pixel regions PA1 may be the same as the arrangement of the plurality of sub-pixels disposed in each of the second pixel regions PA2. In another embodiment, the arrangement of the sub-pixels disposed in each of the first pixel regions PA1 may be different from the arrangement of the sub-pixels disposed in each of the second pixel regions PA2.

[0078] In an embodiment, the area of ​​the blue sub-pixel PXB may be different from the area of ​​the corresponding red sub-pixel PXR and the area of ​​the green sub-pixel PXG. In an embodiment, the area of ​​the blue sub-pixel PXB may be larger than the area of ​​the corresponding red sub-pixel PXR and the area of ​​the green sub-pixel PXG. However, embodiments of the invention are not limited thereto, and each of the blue sub-pixel PXB, the red sub-pixel PXR, and the green sub-pixel PXG may have an area of ​​different sizes.

[0079] In an embodiment, the red sub-pixel PXR, the green sub-pixel PXG, and the blue sub-pixel PXB may have the same planar shape. For example, each of the red sub-pixel PXR, the green sub-pixel PXG, and the blue sub-pixel PXB may have a rectangular planar shape. However, the invention is not limited thereto, and each of the red sub-pixel PXR, the green sub-pixel PXG, and the blue sub-pixel PXB may have various planar shapes (e.g., a rhombus planar shape, etc.).

[0080] In an embodiment, the transmission area TA may be an area through which external light incident in the second display area DA2 is transmitted. Since the second display area DA2 includes the transmission area TA through which external light is transmitted, the functional module FM disposed under the substrate SUB corresponding to the second display area DA2 may detect or recognize an object or user located in front of the display device DD through the transmission area TA.

[0081] Figure 5 is a diagram showing a method according to an embodiment of the present invention. Figure 4 An example plan view of area A.

[0082] In the examples and with reference to Figure 5 , the light blocking layer BL may be disposed in the second pixel region PA2. The light blocking layer BL may also be disposed in the first pixel region PA1 (see Figure 7 ).

[0083] In an embodiment, an opening OPN overlapping each of the transmission areas TA may be defined in the light blocking layer BL. The light blocking layer BL may prevent light incident from the outside from propagating into the second pixel area PA2. In addition, the light blocking layer BL may prevent external light transmitted through the transmission area TA from diffracting around the transmission area TA.

[0084] In an embodiment, the opening OPN of the light blocking layer BL may have various planar shapes. For example, the opening OPN may have a circular planar shape. However, the invention is not limited thereto, and the opening OPN may have various planar shapes.

[0085] In an embodiment, the light blocking layer BL may include a metal, a metal oxide, etc. For example, the light blocking layer BL may include a metal such as titanium (Ti), molybdenum (Mo), copper (Cu), etc. These may be used alone or in combination with each other.

[0086] Figure 6 is a diagram showing a method according to an embodiment of the present invention. Figure 4 Hereinafter, the above-mentioned areas A and B will be omitted or simplified. Figure 5 Descriptions of descriptions overlap descriptions.

[0087] In the examples and with reference to Figure 6 , the light blocking layer BL may be disposed in the second pixel region PA2. The light blocking layer BL may also be disposed in the first pixel region PA1 (see Figure 7 ).

[0088] In an embodiment, the light blocking layer BL may include a plurality of unit patterns CP and a plurality of bridge patterns BP connecting the unit patterns CP. Each of the unit patterns CP may be disposed in one second pixel region PA2. In this case, one pixel PX disposed in each of the second pixel regions PA2 may include two red sub-pixels PXR, four green sub-pixels PXG, and two blue sub-pixels PXB.

[0089] In an embodiment, an opening OPN overlapping each of the transmission areas TA may be defined in the light blocking layer BL For example, the opening OPN may be defined by the unit pattern CP and the bridge pattern BP.

[0090] In an embodiment, the opening OPN of the light blocking layer BL may have various planar shapes. For example, the opening OPN may have a cross planar shape. In this case, the sizes of the top protrusion, the bottom protrusion, the left protrusion, and the right protrusion of the opening OPN may be substantially the same.

[0091] Figure 7 According to the embodiment along Figure 3 A cross-sectional view taken along line II'. Figure 8 According to the embodiment along Figure 5 A cross-sectional view taken along line II-II'. Fig. 9 is a diagram showing a method according to an embodiment of the present invention. Figure 7 and Figure 8 A cross-sectional view of a substrate and a second barrier layer.

[0092] Reference Figure 7 , Figure 8 and Fig. 9 The display device DD according to the embodiment may include a substrate SUB and a display part DP. The display part DP may include a second blocking layer BAR2, a buffer layer BUF, a light blocking layer BL, corresponding transistors TR, first transistors TR1, second transistors TR2, and third transistors TR3, a gate insulating layer GI, an interlayer insulating layer ILD, a via insulating layer VIA, a pixel defining layer PDL, corresponding light emitting elements LED, first light emitting elements LED1, second light emitting elements LED2, and third light emitting elements LED3, and an encapsulation layer TFE.

[0093] In embodiments, the transistor TR may include an active pattern ACT, a gate electrode GE, a source electrode SE, and a drain electrode DE.

[0094] In an embodiment, the first transistor TR1 may include a first active pattern ACT1, a first gate electrode GE1, a first source electrode SE1, and a first drain electrode DE1, the second transistor TR2 may include a second active pattern ACT2, a second gate electrode GE2, a second source electrode SE2, and a second drain electrode DE2, and the third transistor TR3 may include a third active pattern ACT3, a third gate electrode GE3, a third source electrode SE3, and a third drain electrode DE3.

[0095] In the embodiment, the light emitting element LED may include a pixel electrode PE, a light emitting layer EML and a common electrode CE. In addition, the first light emitting element LED1 may include a first pixel electrode PE1, a first light emitting layer EML1 and a common electrode CE, the second light emitting element LED2 may include a second pixel electrode PE2, a second light emitting layer EML2 and a common electrode CE, and the third light emitting element LED3 may include a third pixel electrode PE3, a third light emitting layer EML3 and a common electrode CE.

[0096] In an embodiment and as described above, the display device DD may include a first display area DA1 and a second display area DA2. Since the display device DD includes the first display area DA1 and the second display area DA2, components included in the display device DD (eg, a substrate SUB, etc.) may also include the first display area DA1 and the second display area DA2.

[0097] In an embodiment, the substrate SUB may include a transparent material or an opaque material. The substrate SUB may be made of a transparent resin substrate. Examples of transparent resin substrates may include polyimide substrates. In another embodiment, the substrate may include a quartz substrate, a synthetic quartz substrate, a calcium fluoride substrate, a fluorine-doped quartz substrate, a soda-lime glass substrate, a non-alkaline glass substrate, etc. These may be used alone or in combination with each other.

[0098] In an embodiment, the substrate SUB may have a multi-layer structure. In an embodiment, the substrate SUB may include a first base layer BS1, a first barrier layer BAR1, and a second base layer BS2 disposed to be sequentially stacked.

[0099] In an embodiment, each of the first base layer BS1 and the second base layer BS2 may include a polymer film or an inorganic material. For example, each of the first base layer BS1 and the second base layer BS2 may include a polymer film such as polyethylene terephthalate, polyethylene naphthalate, polyether ketone, polycarbonate, polyarylate, polyether sulfone, polyimide, etc. These may be used alone or in combination with each other.

[0100] In an embodiment, each of the first base layer BS1 and the second base layer BS2 may include polyimide. In another embodiment, each of the first base layer BS1 and the second base layer BS2 may include silicon nitride (SiN x ).

[0101] In an embodiment, each of the first base layer BS1 and the second base layer BS2 may have a relatively high refractive index with respect to a visible light wavelength. For example, the refractive index of each of the first base layer BS1 and the second base layer BS2 may be about 1.81. However, the invention is not limited thereto.

[0102] In an embodiment, the thickness TH1_S of the first base layer BS1 and the thickness TH2_S of the second base layer BS2 may be both about 1 μm. When each of the thickness TH1_S of the first base layer BS1 and the thickness TH2_S of the second base layer BS2 is less than about 1 μm, moisture permeability and interference with surrounding films may occur.

[0103] In an embodiment, the first barrier layer BAR1 may prevent penetration of moisture, etc. The first barrier layer BAR1 may include an inorganic material. In an embodiment, the first barrier layer BAR1 may include a first inorganic layer IOL1 and a second inorganic layer IOL2 disposed on the first inorganic layer IOL1.

[0104] In an embodiment, the first inorganic layer IOL1 may include silicon oxynitride (SiON), and the second inorganic layer IOL2 may include silicon oxide (SiO x ).

[0105] In an embodiment, the first inorganic layer IOL1 may have a relatively medium refractive index relative to the wavelength of visible light, and the second inorganic layer IOL2 may have a relatively small refractive index. In an embodiment, the refractive index of the first base layer BS1 may be greater than the refractive index of the first inorganic layer IOL1, and the refractive index of the first inorganic layer IOL1 may be greater than the refractive index of the second inorganic layer IOL2. For example, the refractive index of the first inorganic layer IOL1 may be about 1.7, and the refractive index of the second inorganic layer IOL2 may be about 1.48. However, the invention is not limited thereto.

[0106] In an embodiment, the second barrier layer BAR2 may be disposed on the substrate SUB. The second barrier layer BAR2 may prevent the penetration of unnecessary components such as impurities or moisture. The second barrier layer BAR2 may include an inorganic material. In an embodiment, the second barrier layer BAR2 may include a third inorganic layer IOL3 and a fourth inorganic layer IOL4 disposed on the third inorganic layer IOL3.

[0107] In an embodiment, the third inorganic layer IOL3 may include silicon oxynitride, and the fourth inorganic layer IOL4 may include silicon oxide.

[0108] In an embodiment, the third inorganic layer IOL3 may have a relatively medium refractive index relative to the wavelength of visible light, and the fourth inorganic layer IOL4 may have a relatively small refractive index. In an embodiment, the refractive index of the second base layer BS2 may be greater than the refractive index of the third inorganic layer IOL3, and the refractive index of the third inorganic layer IOL3 may be greater than the refractive index of the fourth inorganic layer IOL4. For example, the refractive index of the third inorganic layer IOL3 may be about 1.7, and the refractive index of the fourth inorganic layer IOL4 may be about 1.48. However, the invention is not limited thereto.

[0109] In an embodiment, the first inorganic layer IOL1 may have a first thickness TH1, the second inorganic layer IOL2 may have a second thickness TH2, and the second thickness TH2 may be thinner than the first thickness TH1. In addition, the third inorganic layer IOL3 may have a third thickness TH3, and the fourth inorganic layer IOL4 may have a fourth thickness TH4, and the fourth thickness TH4 may be thinner than the third thickness TH3.

[0110] In an embodiment, each of the first thickness TH1 and the third thickness TH3 may satisfy the following equation 1, and each of the second thickness TH2 and the fourth thickness TH4 may satisfy the following equation 2: T1=(λ 1 ×m / 2) / n 1 , (Equation 1) T2=(λ 2 ×m / 2) / n 2 , (Equation 2) Wherein, in Equation 1, T1 is the thickness of any one of the first thickness and the third thickness (Å), λ 1 is the first wavelength in the visible light wavelength range, n 1 is the refractive index of any one of the first inorganic layer and the third inorganic layer, in Equation 2, T2 is the thickness (Å) of any one of the second thickness and the fourth thickness, λ 2 is the second wavelength in the visible light wavelength range, n 2 is the refractive index of any one of the second inorganic layer and the fourth inorganic layer, where m is a positive integer.

[0111] In an embodiment, the first wavelength may be a wavelength of green light, and the second wavelength may be a wavelength of blue light. For example, the first wavelength may be in the range of about 495 nm to about 605 nm, and the second wavelength may be in the range of about 405 nm to about 495 nm.

[0112] In an embodiment, m may be any one of 1, 2, 3, 4, 5, and 6. In addition, the refractive index of each of the first and third inorganic layers IOL1 and IOL3 may be about 1.7, and the refractive index of each of the second and fourth inorganic layers IOL2 and IOL4 may be about 1.48.

[0113] In an embodiment, each of the first thickness TH1, the second thickness TH2, the third thickness TH3, and the fourth thickness TH4 may be in a range of about 1000 Å to about 10000 Å. When each of the first thickness TH1, the second thickness TH2, the third thickness TH3, and the fourth thickness TH4 is less than 1000 Å, moisture penetration may occur. When each of the first thickness TH1, the second thickness TH2, the third thickness TH3, and the fourth thickness TH4 exceeds 10000 Å, stress or warping may occur.

[0114] In an embodiment, the first thickness TH1 may be substantially the same as the third thickness TH3, and the second thickness TH2 may be substantially the same as the fourth thickness TH4. That is, the thickness of the first barrier layer BAR1 may be substantially the same as the thickness of the second barrier layer BAR2.

[0115] For example, in an embodiment, when m is 2, each of the first thickness TH1 and the third thickness TH3 is determined by dividing the first wavelength of green light by the refractive index of each of the first inorganic layer IOL1 and the third inorganic layer IOL3, and each of the second thickness TH2 and the fourth thickness TH4 can be determined by dividing the second wavelength of blue light by the refractive index of each of the second inorganic layer IOL2 and the fourth inorganic layer IOL4.

[0116] In an embodiment, when m is 2, each of the first thickness TH1 and the third thickness TH3 may be in the range of about 2900Å to about 3600Å, and each of the second thickness TH2 and the fourth thickness TH4 may be in the range of about 2700Å to about 3400Å.

[0117] In an embodiment, since each of the first thickness TH1 and the third thickness TH3 satisfies the above equation 1 and each of the second thickness TH2 and the fourth thickness TH4 satisfies equation 2, the average transmittance of the transmission area TA for blue light may be relatively increased, and the average transmittance of the transmission area TA for green light may be relatively decreased (or increased). In this case, the average transmittance of the transmission area TA for blue light divided by the average transmittance of the transmission area TA for green light may be relatively increased. Therefore, the amount of light transmitted through a functional module (e.g., Figure 2 The functional module FM) displays the image in a yellowish color.

[0118] In an embodiment, the light blocking layer BL may be disposed on the second blocking layer BAR2. The light blocking layer BL may overlap the first display area DA1 and the second display area DA2. Specifically, the light blocking layer BL may overlap the entire first display area DA1 and the second pixel area PA2 of the second display area DA2.

[0119] In the embodiment and as described above, the opening OPN overlapping the transmission area TA may be defined in the light blocking layer BL. That is, the transmission area TA may be defined by the opening OPN of the light blocking layer BL.

[0120] In an embodiment, a buffer layer BUF may be disposed on the light blocking layer BL. The buffer layer BUF may prevent metal atoms or impurities from diffusing from the substrate SUB to the transistors TR, TR1, TR2, and TR3. In addition, when the surface of the substrate SUB is uneven, the buffer layer BUF may improve the flatness of the surface of the substrate SUB. For example, the buffer layer BUF may include a material such as silicon oxide (SiO x )、Silicon Nitride(SiN x ), silicon oxynitride (SiO x N y ) and the like. These may be used alone or in combination with each other. In an embodiment, the buffer layer BUF may include silicon nitride.

[0121] In an embodiment, the buffer layer BUF may have a relatively high refractive index relative to the wavelength of visible light. In an embodiment, the refractive index of the buffer layer BUF may be greater than the refractive index of each of the first inorganic layer IOL1, the second inorganic layer IOL2, the third inorganic layer IOL3, and the fourth inorganic layer IOL4. For example, the refractive index of the buffer layer BUF may be about 1.89. However, the invention is not limited thereto.

[0122] In an embodiment, respective first, second, and third active patterns ACT1, ACT2, and ACT3 may be disposed in the first pixel area PA1 on the buffer layer BUF. Respective first, second, and third active patterns ACT1, ACT2, and ACT3 may each include a source region, a drain region, and a channel region positioned between the source region and the drain region.

[0123] In embodiments, each of the first, second, and third active patterns ACT1, ACT2, and ACT3 may include a metal oxide semiconductor (eg, indium gallium zinc oxide (IGZO), etc.), an inorganic semiconductor (eg, amorphous silicon, polycrystalline silicon, etc.), or an organic semiconductor.

[0124] In an embodiment, the active pattern ACT may be disposed in the second pixel area PA2 on the buffer layer BUF. The active pattern ACT may be formed by the same process as the corresponding first active pattern ACT1, the second active pattern ACT2, and the third active pattern ACT3, and may include the same material as the corresponding first active pattern ACT1, the second active pattern ACT2, and the third active pattern ACT3. In addition, the active pattern ACT may include a source region, a drain region, and a channel region positioned between the source region and the drain region.

[0125] In an embodiment, the gate insulating layer GI may be disposed on the buffer layer BUF. The gate insulating layer GI may fully cover the active patterns ACT, ACT1, ACT2, and ACT3, and may have a substantially flat upper surface without generating steps around the active patterns ACT, ACT1, ACT2, and ACT3. In another embodiment, the gate insulating layer GI may cover the active patterns ACT, ACT1, ACT2, and ACT3, and may be disposed with a uniform thickness along the contour of each of the active patterns ACT, ACT1, ACT2, and ACT3. For example, the gate insulating layer GI may include an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, and the like. These may be used alone or in combination with each other.

[0126] In an embodiment, the gate insulating layer GI may be disposed only in the first pixel region PA1 and the second pixel region PA2 , but not in the transmission region TA. However, the invention is not limited thereto.

[0127] In an embodiment, the corresponding first gate electrode GE1, the second gate electrode GE2, and the third gate electrode GE3 may be disposed in the first pixel area PA1 on the gate insulating layer GI. The corresponding first gate electrode GE1, the second gate electrode GE2, and the third gate electrode GE3 may overlap with the corresponding channel regions of the first active pattern ACT1, the second active pattern ACT2, and the third active pattern ACT3. Each of the first gate electrode GE1, the second gate electrode GE2, and the third gate electrode GE3 may include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, and the like. Examples of metals may include silver (Ag), molybdenum (Mo), aluminum (Al), tungsten (W), copper (Cu), nickel (Ni), chromium (Cr), titanium (Ti), tantalum (Ta), platinum (Pt), scandium (Sc), and the like. Examples of conductive metal oxides may include indium tin oxide and indium zinc oxide. In addition, examples of metal nitrides may include aluminum nitride (AlN x )、Tungsten Nitride(WN x ), chromium nitride (CrN x ), etc. These may be used alone or in combination with each other.

[0128] In an embodiment, the gate electrode GE may be disposed in the second pixel area PA2 on the gate insulating layer GI. The gate electrode GE may be formed by the same process as the corresponding first gate electrode GE1, the second gate electrode GE2, and the third gate electrode GE3, and may include the same material as the corresponding first gate electrode GE1, the second gate electrode GE2, and the third gate electrode GE3. In addition, the gate electrode GE may overlap the channel region of the active pattern ACT.

[0129] In an embodiment, an interlayer insulating layer ILD may be disposed on the gate insulating layer GI. The interlayer insulating layer ILD may fully cover the gate electrodes GE, GE1, GE2, and GE3, and may have a substantially flat upper surface without generating steps around the gate electrodes GE, GE1, GE2, and GE3. In another embodiment, the interlayer insulating layer ILD may cover the gate electrodes GE, GE1, GE2, and GE3, and may be disposed with a uniform thickness along the contour of each of the gate electrodes GE, GE1, GE2, and GE3. For example, the interlayer insulating layer ILD may include an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, etc. These may be used alone or in combination with each other.

[0130] In an embodiment, the interlayer insulating layer ILD may be disposed only in the first pixel region PA1 and the second pixel region PA2 and may not be disposed in the transmission region TA. However, the invention is not limited thereto.

[0131] In an embodiment, the corresponding first source electrode SE1, the second source electrode SE2, and the third source electrode SE3 and the corresponding first drain electrode DE1, the second drain electrode DE2, and the third drain electrode DE3 may be disposed in the first pixel area PA1 on the interlayer insulating layer ILD. The corresponding each of the first source electrode SE1, the second source electrode SE2, and the third source electrode SE3 may be connected to the corresponding source region of the first active pattern ACT1, the second active pattern ACT2, and the third active pattern ACT3 through a contact hole penetrating the gate insulating layer GI and the interlayer insulating layer ILD. In addition, the corresponding each of the first drain electrode DE1, the second drain electrode DE2, and the third drain electrode DE3 may be connected to the corresponding drain region of the first active pattern ACT1, the second active pattern ACT2, and the third active pattern ACT3 through a contact hole penetrating the gate insulating layer GI and the interlayer insulating layer ILD.

[0132] For example, in an embodiment, each of the first source electrode SE1, the second source electrode SE2, and the third source electrode SE3 and the first drain electrode DE1, the second drain electrode DE2, and the third drain electrode DE3 may include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, etc. These may be used alone or in combination with each other.

[0133] In an embodiment, the source electrode SE and the drain electrode DE may be disposed in the second pixel area PA2 on the interlayer insulating layer ILD. The source electrode SE may be connected to the source region of the active pattern ACT through a contact hole penetrating the gate insulating layer GI and the interlayer insulating layer ILD. The drain electrode DE may be connected to the drain region of the active pattern ACT through a contact hole penetrating the gate insulating layer GI and the interlayer insulating layer ILD.

[0134] In an embodiment, the source electrode SE and the drain electrode DE may be formed by the same process as the corresponding first source electrode SE1, the second source electrode SE2, and the third source electrode SE3 and the corresponding first drain electrode DE1, the second drain electrode DE2, and the third drain electrode DE3. The source electrode SE and the drain electrode DE may include the same material as the corresponding first source electrode SE1, the second source electrode SE2, and the third source electrode SE3 and the corresponding first drain electrode DE1, the second drain electrode DE2, and the third drain electrode DE3.

[0135] In an embodiment, the via insulating layer VIA may be disposed on the interlayer insulating layer ILD. The via insulating layer VIA may fully cover the source electrodes SE, SE1, SE2, and SE3 and the drain electrodes DE, DE1, DE2, and DE3. The via insulating layer VIA may include an organic material. For example, the via insulating layer VIA may include an organic material such as a phenolic resin, a polyacrylate resin, a polyimide resin, a polyamide resin, a siloxane resin, an epoxy resin, etc. These may be used alone or in combination with each other.

[0136] In an embodiment, the via insulating layer VIA may be disposed in the first pixel region PA1, the second pixel region PA2, and the transmission region TA. However, the invention is not limited thereto.

[0137] In an embodiment, the corresponding first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may be disposed in the first pixel area PA1 on the via insulating layer VIA. Each of the corresponding first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may be connected to the corresponding first drain electrode DE1, the second drain electrode DE2, and the third drain electrode DE3 through a contact hole penetrating the via insulating layer VIA. For example, each of the corresponding first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, etc. These may be used alone or in combination with each other.

[0138] In an embodiment, the pixel electrode PE may be disposed in the second pixel area PA2 on the via insulating layer VIA. The pixel electrode PE may be formed by the same process as the corresponding first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3, and may include the same material as the corresponding first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3. The pixel electrode PE may be connected to the drain electrode DE through a contact hole penetrating the via insulating layer VIA.

[0139] In an embodiment, the pixel defining layer PDL may be disposed on the via insulating layer VIA. The pixel defining layer PDL may cover the edge of each of the pixel electrodes PE, PE1, PE2, and PE3. In addition, an opening exposing a portion of the upper surface of each of the pixel electrodes PE, PE1, PE2, and PE3 may be defined in the pixel defining layer PDL. For example, the pixel defining layer PDL may include an inorganic material and / or an organic material.

[0140] In an embodiment, the pixel defining layer PDL may include an organic material such as epoxy resin, silicone resin, etc. These may be used alone or in combination with each other. In another embodiment, the pixel defining layer PDL may include an organic material and / or an inorganic material containing a light blocking material such as a black pigment, a black dye, etc.

[0141] In an embodiment, the pixel defining layer PDL may be disposed only in the first pixel area PA1 and the second pixel area PA2 , and may not be disposed in the transmission area TA.

[0142] In an embodiment, the corresponding first light-emitting layer EML1, the second light-emitting layer EML2, and the third light-emitting layer EML3 may be respectively disposed on the corresponding first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3. Each of the first light-emitting layer EML1, the second light-emitting layer EML2, and the third light-emitting layer EML3 may include an organic material that emits light of a preset color. For example, the first light-emitting layer EML1 may include an organic material that emits red light, the second light-emitting layer EML2 may include an organic material that emits green light, and the third light-emitting layer EML3 may include an organic material that emits blue light.

[0143] In an embodiment, the light emitting layer EML may be disposed on the pixel electrode PE. For example, the light emitting layer EML may include an organic material emitting red light.

[0144] In an embodiment, the encapsulation layer TFE may be disposed on the common electrode CE. The encapsulation layer TFE may prevent impurities, moisture, etc. from penetrating into the light emitting elements LED, LED1, LED2, and LED3 from the outside. The encapsulation layer TFE may include at least one inorganic layer and at least one organic layer. In an embodiment, the encapsulation layer TFE may include a first inorganic encapsulation layer IL1, an organic encapsulation layer OL, and a second inorganic encapsulation layer IL2.

[0145] In an embodiment, the first inorganic encapsulation layer IL1 may be disposed on the common electrode CE. The first inorganic encapsulation layer IL1 may overlap the first display area DA1 and the second display area DA2. For example, the first inorganic encapsulation layer IL1 may include an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, etc. These may be used alone or in combination with each other.

[0146] In an embodiment, the organic encapsulation layer OL may be disposed on the first inorganic encapsulation layer IL1. The organic encapsulation layer OL may overlap the first display area DA1 and the second display area DA2. For example, the organic encapsulation layer OL may include an organic material such as polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acrylic resin, etc. These may be used alone or in combination with each other.

[0147] In an embodiment, the second inorganic encapsulation layer IL2 may be disposed on the organic encapsulation layer OL. The second inorganic encapsulation layer IL2 may overlap the first display area DA1 and the second display area DA2. For example, the second inorganic encapsulation layer IL2 may include an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, etc. These may be used alone or in combination with each other.

[0148] Hereinafter, effects of the invention according to comparative examples and other examples will be described.

[0149] Fig.10 is a graph showing the transmittance of the blocking layer with respect to visible light wavelengths in Comparative Example. Fig.11 is a graph showing transmittance of a blocking layer according to an embodiment with respect to visible light wavelengths.

[0150] In the comparative example and the example, the transmittance of the blocking layer to light having a first wavelength P1 and the transmittance of the blocking layer to light having a second wavelength P2 were measured. The first wavelength P1 was about 450 nm, and the second wavelength P2 was about 550 nm.

[0151] In a comparative embodiment, the barrier layer includes a first barrier layer and a second barrier layer, each of which includes a first inorganic layer formed of silicon oxynitride and having a refractive index of about 1.7 and a second inorganic layer formed of silicon oxide and having a refractive index of about 1.48. The thickness of the first inorganic layer of the first barrier layer is about 1000Å, and the thickness of the second inorganic layer of the first barrier layer is about 5000Å. The thickness of the first inorganic layer of the second barrier layer is about 1000Å, and the thickness of the second inorganic layer of the second barrier layer is about 5700Å.

[0152] In an embodiment, the barrier layer includes a first barrier layer and a second barrier layer, and each of the first barrier layer and the second barrier layer includes a first inorganic layer formed of silicon oxynitride and a second inorganic layer formed of silicon oxide.

[0153] In an embodiment, the thickness of the first inorganic layer of each of the first and second barrier layers is calculated via Equation 1 above, and the thickness of the second inorganic layer of each of the first and second barrier layers is calculated via Equation 2 above.

[0154] By substituting the first wavelength (λ 1 ) is substituted into about 550 nm, and the refractive index of the first inorganic layer (n 1 ) is substituted as about 1.7 and m is substituted as 2 to calculate the thickness of the first inorganic layer satisfying the embodiment. In addition, by substituting the second wavelength (λ 2 ) is substituted into about 450 nm, and the refractive index of the second inorganic layer (n 2 ) is substituted as approximately 1.48 and m is substituted as 2 to calculate the thickness of the second inorganic layer satisfying the embodiment.

[0155] As a result, in the examples and with reference to Fig.10 , in the barrier layer satisfying the comparative example, it can be confirmed that the transmittance of the barrier layer to light having a first wavelength P1 (i.e., blue light) is about 98%, and the transmittance of the barrier layer to light having a second wavelength P2 (i.e., green light) is about 98%. On the other hand, referring to Fig.11In the blocking layer satisfying the embodiment, it can be confirmed that the transmittance of the blocking layer to blue light having the first wavelength P1 is about 99%, and the transmittance of the blocking layer to green light having the second wavelength P2 is about 97%.

[0156] Thus, it can be confirmed that, in the above examples, the transmittance of the blocking layer to blue light increases, and the transmittance of the blocking layer to green light decreases, compared with the comparative example.

[0157] Fig.12 : is a view showing the transmittance of the transmission area in the comparative example and the example with respect to the first wavelength included in the visible light wavelength range. Fig.13 is a view showing the transmittance of the transmission region in the comparative example and the example for a second wavelength included in the visible light wavelength range. For example, Fig.12 The first wavelength is the wavelength of blue light, Fig.13 The second wavelength is the wavelength of green light.

[0158] In the comparative example and the example, the average transmittance of the transmission area for blue light having a first wavelength and the average transmittance of the transmission area for green light having a second wavelength were measured. The first wavelength was in the range of about 440 nm to about 460 nm, and the second wavelength was in the range of about 540 nm to about 560 nm.

[0159] In the comparative example, the material and the refractive index of each of the first base layer, the first barrier layer, the second base layer, the second barrier layer, and the buffer layer satisfy Table 1 below.

[0160] In addition, in Example 1, Example 2, Example 3, Example 4, Example 5 and Example 6, the material and refractive index of each of the first base layer, the first barrier layer, the second base layer, the second barrier layer and the buffer layer satisfy the following Table 1. In the embodiment, the first barrier layer includes the first inorganic layer and the second inorganic layer, and the second barrier layer includes the third inorganic layer and the fourth inorganic layer.

[0161] Table 1 In addition, in the comparative example, the thickness of each of the first base layer, the first barrier layer, the second base layer, the second barrier layer, and the buffer layer satisfies the following Table 2. In addition, in Example 1, Example 2, Example 3, Example 4, Example 5, and Example 6, the thickness of each of the first base layer, the first barrier layer, the second base layer, the second barrier layer, and the buffer layer satisfies the following Table 2. In the following Table 2, the unit of thickness is angstrom (Å), and the thickness is an approximate value.

[0162] In Example 1, Example 2, Example 3, Example 4, Example 5 and Example 6, the thickness of each of the first inorganic layer and the third inorganic layer is calculated via Equation 1 above, and the thickness of each of the second inorganic layer and the fourth inorganic layer is calculated via Equation 2 above.

[0163] By substituting the first wavelength (λ 1 ) is substituted into about 550 nm, and the refractive index (n 1 ) is substituted as about 1.7 and m is substituted as 2 to calculate the thickness of each of the first inorganic layer and the third inorganic layer satisfying Example 1. In addition, by substituting the second wavelength (λ 2 ) is substituted into about 450 nm, and the refractive index (n 2 ) is substituted as approximately 1.48 and m is substituted as 2 to calculate the thickness of each of the second inorganic layer and the fourth inorganic layer satisfying Example 1.

[0164] The thickness of each of the first inorganic layer and the third inorganic layer satisfying Example 2 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 1 in Equation 1. In addition, the thickness of each of the second inorganic layer and the fourth inorganic layer satisfying Example 2 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 1 in Equation 2.

[0165] The thickness of each of the first inorganic layer and the third inorganic layer satisfying Example 3 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 3 in Equation 1. In addition, the thickness of each of the second inorganic layer and the fourth inorganic layer satisfying Example 3 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 3 in Equation 2.

[0166] The thickness of each of the first inorganic layer and the third inorganic layer satisfying Example 4 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 4 in Equation 1. In addition, the thickness of each of the second inorganic layer and the fourth inorganic layer satisfying Example 4 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 4 in Equation 2.

[0167] The thickness of each of the first inorganic layer and the third inorganic layer satisfying Example 5 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 5 in Equation 1. In addition, the thickness of each of the second inorganic layer and the fourth inorganic layer satisfying Example 5 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 5 in Equation 2.

[0168] The thickness of each of the first inorganic layer and the third inorganic layer satisfying Example 6 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 6 in Equation 1. In addition, the thickness of each of the second inorganic layer and the fourth inorganic layer satisfying Example 6 is calculated by substituting the remaining values ​​in the same manner as in Example 1, except that m is 6 in Equation 2.

[0169] Table 2 Results, see Table 3 and Fig.12 and Fig.13 It can be confirmed that the average transmittance of the transmission area according to Example 1, Example 2, Example 3, Example 4, Example 5 and Example 6 for blue light is greater than the average transmittance of the transmission area according to the comparative example, and the average transmittance of the transmission area according to Example 1, Example 2, Example 3, Example 4, Example 5 and Example 6 for green light is smaller or greater than the average transmittance of the transmission area according to the comparative example for green light.

[0170] Table 3 Thus, it can be confirmed that the average transmittance of the transmission area for blue light divided by the average transmittance of the transmission area for green light according to Examples 1, 2, 3, 4, 5 and 6 is greater than the average transmittance of the transmission area for blue light divided by the average transmittance of the transmission area for green light according to the comparative example.

[0171] The invention can be applied to various display devices. For example, the invention can be applied to various display devices such as display devices for vehicles, ships and aircraft, portable communication devices, display devices for display or information transmission, medical display devices, etc.

[0172] The foregoing is an illustration of the embodiments and should not be construed as limiting the embodiments. Although several embodiments have been described, it will be readily appreciated by those skilled in the art that many modifications may be made in the embodiments without substantially departing from the novel teachings and advantages of the invention. Therefore, all such modifications are intended to be included within the scope of the invention disclosed in the specification and defined in the claims. Therefore, it should be understood that the foregoing is an illustration of various embodiments and should not be construed as being limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the invention. In addition, the embodiments or portions of the embodiments may be combined in whole or in part without departing from the scope of the invention.

Claims

1. A display device, comprising: A first substrate layer, comprising a first display area and a second display area, the first display area comprising a first pixel area, the second display area being at least partially surrounded by the first display area and comprising a transmission area and a second pixel area; a first barrier layer disposed on the first base layer and comprising a first inorganic layer having a first thickness and a second inorganic layer having a second thickness, wherein the second thickness is thinner than the first thickness; a second substrate layer, disposed on the first barrier layer; a second barrier layer disposed on the second base layer and comprising a third inorganic layer having a third thickness and a fourth inorganic layer having a fourth thickness, wherein the fourth thickness is thinner than the third thickness; and a plurality of pixels disposed on the second barrier layer so as to be located in the first pixel region and the second pixel region, Wherein, each of the first thickness and the third thickness satisfies, T1=(λ1×m / 2) / n1, (Equation 1) And wherein each of the second thickness and the fourth thickness satisfies, T2=(λ2×m / 2) / n2, (Equation 2) Wherein, in Equation 1, T1 is the thickness of any one of the first thickness and the third thickness, in Å, λ1 is the first wavelength in the visible light wavelength range, and n1 is the refractive index of any one of the first inorganic layer and the third inorganic layer, and Wherein, in Equation 2, T2 is the thickness of any one of the second thickness and the fourth thickness, in Å, λ2 is the second wavelength in the visible light wavelength range, and n2 is the refractive index of any one of the second inorganic layer and the fourth inorganic layer, and Here, m is a positive integer.

2. The display device according to claim 1, wherein: The first thickness and the third thickness are equal, and the second thickness and the fourth thickness are equal.

3. The display device according to claim 1, wherein: The first wavelength is a wavelength of green light, and the second wavelength is a wavelength of blue light.

4. The display device according to claim 1, wherein: Each of the first thickness, the second thickness, the third thickness, and the fourth thickness is in a range of 1000Å to 10000Å.

5. The display device according to claim 1, wherein: The refractive index of the first base layer is greater than that of the first inorganic layer, and the refractive index of the first inorganic layer is greater than that of the second inorganic layer.

6. The display device according to claim 5, wherein: The refractive index of the second base layer is greater than that of the third inorganic layer, and the refractive index of the third inorganic layer is greater than that of the fourth inorganic layer.

7. The display device according to claim 1, wherein: The first and third inorganic layers include silicon oxynitride, and the second and fourth inorganic layers include silicon oxide.

8. The display device according to claim 1, further comprising: The buffer layer is disposed on the second base layer and includes an inorganic material.

9. The display device according to claim 8, wherein: The buffer layer has a refractive index greater than the refractive index of each of the first inorganic layer, the second inorganic layer, the third inorganic layer, and the fourth inorganic layer.

10. The display device according to claim 1, wherein: Each of the first base layer and the second base layer includes polyimide.

11. The display device according to claim 1, wherein: Each of the first base layer and the second base layer includes silicon nitride.

12. The display device according to claim 1, wherein: The transmittance of the first display area is smaller than the transmittance of the second display area.

13. The display device according to claim 12, further comprising: The functional module is arranged below the first base layer corresponding to the second display area.

14. The display device according to claim 13, wherein: The functional module includes at least one of a camera module, a facial recognition sensor module, a pupil recognition sensor module, an acceleration sensor module, a geomagnetic sensor module, a proximity sensor module, an infrared sensor module, and an illumination sensor module.

15. A display device, comprising: A first substrate layer, comprising a first display area and a second display area, the first display area comprising a first pixel area, the second display area being at least partially surrounded by the first display area and comprising a transmission area and a second pixel area; a first barrier layer disposed on the first base layer and comprising a first inorganic layer having a first thickness and a second inorganic layer having a second thickness, wherein the second thickness is thinner than the first thickness; a second substrate layer, disposed on the first barrier layer; a second barrier layer disposed on the second base layer and comprising a third inorganic layer having a third thickness and a fourth inorganic layer having a fourth thickness, wherein the fourth thickness is thinner than the third thickness; and a plurality of pixels disposed on the second barrier layer so as to be located in the first pixel region and the second pixel region, The first thickness is determined by dividing a first wavelength of green light by a refractive index of the first inorganic layer, and the second thickness is determined by dividing a second wavelength of blue light by a refractive index of the second inorganic layer.

16. The display device according to claim 15, wherein: The first thickness is in the range of 2900Å to 3600Å, and the second thickness is in the range of 2700Å to 3400Å.

17. The display device according to claim 15, wherein: The refractive index of the first base layer is greater than the refractive index of the first inorganic layer, and the refractive index of the first inorganic layer is greater than the refractive index of the second inorganic layer.

18. The display device according to claim 17, wherein: The refractive index of the second base layer is greater than that of the third inorganic layer, and the refractive index of the third inorganic layer is greater than that of the fourth inorganic layer.

19. The display device according to claim 15, wherein: The first and third inorganic layers include silicon oxynitride, and the second and fourth inorganic layers include silicon oxide.

20. The display device according to claim 15, further comprising: The buffer layer is disposed on the second base layer and includes an inorganic material.

21. The display device according to claim 20, wherein: The buffer layer has a refractive index greater than a refractive index of each of the first inorganic layer, the second inorganic layer, the third inorganic layer, and the fourth inorganic layer.

22. The display device according to claim 15, wherein: Each of the first base layer and the second base layer includes polyimide.

23. The display device according to claim 15, wherein: Each of the first base layer and the second base layer includes silicon nitride.

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