Patent Description:
With the development of information technology, the market for a display device, which is a connection medium between a user and information, is growing. Accordingly, the use of flat panel display devices such as an organic light emitting display device, a liquid crystal display device, or the like is increasing.

Recently, a display device including a color conversion panel has been proposed to implement a display device having high light efficiency.

<CIT>, <CIT> and <CIT> relate to display devices having color conversion elements.

An object of the present invention is to provide a high resolution display device.

An object of the present invention is to provide a color conversion panel with improved light efficiency.

In order to achieve the object of the present invention described above, the invention provides a color conversion panel in accordance with claim <NUM> and a display device in accordance with claim <NUM>.

In the color conversion panel of the display device according to the embodiments, first and second color conversion patterns partially overlap, and the reflective partition wall is disposed between the partially overlapping color conversion patterns, so that a high resolution display device in which color conversion efficiency, light efficiency, or the like are improved may be provided.

In the color conversion panel according to the embodiments, first and second color conversion patterns partially overlap, and the reflective partition wall is disposed between the partially overlapping color conversion patterns, so that color conversion efficiency, light efficiency, or the like of the color conversion panel may be improved, and color mixture or the like may be prevented.

Hereinafter, display devices and color conversion panels in accordance with embodiments of the present invention will be explained in detail with reference to the accompanying drawings.

<FIG> is a plan view illustrating a display device according to an embodiment.

Referring to <FIG>, a plurality of pixels arranged in a substantially matrix form in a plan view may be defined in a display device according to an embodiment. A 'pixel' refers to a single area defined by partitioning a display area in a plan view for color display, and one pixel may display one predetermined basic color. In other words, one pixel may be a minimum unit capable of displaying a color independent from other pixels.

The pixels may include a first pixel PX1 displaying a first color, a second pixel PX2 displaying a second color having a peak wavelength shorter than that of the first color, and a third pixel displaying a third color having a peak wavelength shorter than that of the second color. In an embodiment, the first pixel PX1, the second pixel PX2, and the third pixel PX3, which are sequentially arranged in one direction, may form a basic unit, and may be repeatedly arranged in the direction.

In an embodiment, the first pixel PX1 may be a pixel that displays a first color (red) having a peak wavelength within a range of about <NUM> to about <NUM>, the second pixel PX2 may be a pixel that displays a second color (green) having a peak wavelength within a range of about <NUM> to <NUM>, and the third pixel (PX3) may be a pixel that displays a third color (blue) having a peak wavelength within a range of about <NUM> to about <NUM>.

<FIG> is a cross-sectional view illustrating an example of the display device taken along a line I-I' in <FIG>.

This display device is not according to the claimed invention. Referring to <FIG> and <FIG>, a display device according to an embodiment may include a display panel <NUM> and a color conversion panel <NUM>. The display panel <NUM> may include a base substrate <NUM>, a semiconductor layer <NUM>, a gate insulation layer <NUM>, a gate electrode <NUM>, a gate line <NUM>, an insulation interlayer <NUM>, a source electrode <NUM>, a drain electrode <NUM>, a data line <NUM>, a planarization layer <NUM>, a first electrode <NUM>, a pixel defining layer <NUM>, an emission layer <NUM>, and a second electrode <NUM>. The display panel <NUM> may provide incident light LI to the color conversion panel <NUM>.

The semiconductor layer <NUM> including amorphous silicon, polycrystalline silicon, oxide semiconductor, or the like may be disposed on the base substrate <NUM>. The gate insulation layer <NUM> including silicon nitride, silicon oxide, or the like may be disposed on the semiconductor layer <NUM>.

The gate electrode <NUM> and the gate line <NUM> each including a conductive material may be disposed on the gate insulation layer <NUM>. The gate electrode <NUM> may overlap the semiconductor layer <NUM>, and the gate line <NUM> may transmit a gate signal and may extend along one direction. The insulation interlayer <NUM> including silicon nitride, silicon oxide, or the like may be disposed on the gate electrode <NUM> and the gate line <NUM>.

The source electrode <NUM>, the drain electrode <NUM>, and the data line <NUM> each including a conductive material may be disposed on the insulation interlayer <NUM>. The source electrode <NUM> and the drain electrode <NUM> may be connected to the semiconductor layer <NUM>, and the data line <NUM> may transmit a data signal and may extend along a direction crossing the gate line <NUM>. The semiconductor layer <NUM>, the gate electrode <NUM>, the source electrode <NUM>, and the drain electrode <NUM> may form a thin film transistor. The planarization layer <NUM> including an inorganic insulation material such as silicon nitride or silicon oxide and/or an organic insulating material such as polyimide may be disposed on the source electrode <NUM>, the drain electrode <NUM>, and the data line <NUM>.

The first electrode <NUM> including a conductive material may be disposed on the planarization layer <NUM>. The first electrode <NUM> may be connected to the source electrode <NUM> or the drain electrode <NUM>. The pixel defining layer <NUM> including an opening that exposes a portion of the first electrode <NUM> may be disposed on the planarization layer <NUM>.

The emission layer <NUM> may be disposed on the first electrode <NUM>. The emission layer <NUM> may include a material that emits light of the third color. The second electrode <NUM> including a conductive material may be disposed on the emission layer <NUM>. The emission layer <NUM> may emit the incident light LI of the third color to above the display panel <NUM> based on an electric field formed between the first electrode <NUM> and the second electrode <NUM>. In an embodiment, the emission layer <NUM> may be formed on the first electrode <NUM> and the pixel defining layer <NUM>, however, the present invention is not limited thereto. In another embodiment, the emission layer <NUM> may be formed in the opening of the pixel defining layer <NUM> on the first electrode <NUM>.

The color conversion panel <NUM> may overlap the display panel <NUM>. The color conversion panel <NUM> may be positioned above the display panel <NUM>. The color conversion panel <NUM> may include a substrate <NUM>, a first color filter <NUM>, a second color filter <NUM>, a third color filter <NUM>, a first color conversion pattern <NUM>, a second color conversion pattern <NUM>, a transmission pattern <NUM>, a first reflective partition wall <NUM>, and a second reflective partition wall <NUM>. The color conversion panel <NUM> may receive the incident light LI from the display panel <NUM>, and may emit first light L1, second light L2, and third light L3 upward.

<FIG> is a cross-sectional view illustrating a color conversion panel according to an embodiment. For example, <FIG> may illustrate an example of the color conversion panel <NUM> in <FIG>. This color conversion panel <NUM> is not according to the claimed invention.

Referring to <FIG>, <FIG>, and <FIG>, a color conversion panel <NUM> according to an embodiment may include a substrate <NUM>, a first color filter <NUM>, a second color filter <NUM>, a third color filter <NUM>, a first light blocking pattern <NUM>, a first color conversion pattern <NUM>, a second color conversion pattern <NUM>, a transmission pattern <NUM>, a first reflective partition wall <NUM>, and a second reflective partition wall <NUM>.

The substrate <NUM> may be a transparent insulating substrate. For example, the substrate <NUM> may be formed of glass, quartz, translucent plastic, or the like. In an embodiment, the substrate <NUM> may be a flexible substrate.

The first color filter <NUM> may be disposed on the substrate <NUM>. The first color filter <NUM> may be a wavelength-selective optical filter that transmits light of a specific wavelength band and blocks light of another specific wavelength band. In other words, the first color filter <NUM> may selectively transmit only a partial wavelength band of light incident thereon. For example, the first color filter <NUM> may include a pigment or dye that absorbs light of a specific wavelength band.

In an embodiment, the first color filter <NUM> may selectively transmit light having a peak wavelength longer than the peak wavelength of the incident light LI provided by the display panel <NUM>, and may block the incident light LI. For example, the first color filter <NUM> may be disposed in the first pixel PX1 in a plan view, may transmit a first light L1 including the peak wavelength of the first color converted by the first color conversion pattern <NUM>, and may absorb or reflect the incident light LI including the peak wavelength of the third color that is not converted by the first color conversion pattern <NUM>.

The second color filter <NUM> may be disposed on the substrate <NUM>. In an embodiment, the second color filter <NUM> may partially overlap the first color filter <NUM>. For example, the second color filter <NUM> may be disposed on the substrate <NUM> while covering a portion of the first color filter <NUM>. The second color filter <NUM> may be a wavelength-selective optical filter that transmits light of a specific wavelength band and blocks light of another specific wavelength band. In other words, the second color filter <NUM> may selectively transmit only a partial wavelength band of light incident thereon. For example, the second color filter <NUM> may include a pigment or dye that absorbs light of a specific wavelength band.

In an embodiment, the second color filter <NUM> may selectively transmit light having a peak wavelength longer than the peak wavelength of the incident light LI provided by the display panel <NUM>, and may block the incident light LI. For example, the second color filter <NUM> may be disposed in the second pixel PX2 in a plan view, may transmit a second light L2 including the peak wavelength of the second color converted by the second color conversion pattern <NUM>, and may absorb or reflect the incident light LI including the peak wavelength of the third color that is not converted by the second color conversion pattern <NUM>.

The third color filter <NUM> may be disposed on the substrate <NUM>. In an embodiment, the third color filter <NUM> may partially overlap the first color filter <NUM> and the second color filter <NUM>. The third color filter <NUM> may be disposed between the first color filter <NUM> and the second color filter <NUM> spaced apart from each other. For example, the first color filter <NUM> may be disposed on the substrate <NUM> while covering a portion of the third color filter <NUM>, and the second color filter <NUM> may be disposed on the substrate <NUM> while covering another portion of the third color filter <NUM>. The third color filter <NUM> may be a wavelength-selective optical filter that transmits light of a specific wavelength band and blocks light of another specific wavelength band. In other words, the third color filter <NUM> may selectively transmit only a partial wavelength band of light incident thereon. For example, the third color filter <NUM> may include a pigment or dye that absorbs light of a specific wavelength band.

In an embodiment, the third color filter <NUM> may selectively transmit the incident light LI provided by the display panel <NUM>. For example, the third color filter <NUM> may be disposed in the third pixel PX3 in a plan view, may transmit a third light L3 including the peak wavelength of the third color corresponding to the incident light LI transmitted by the transmission pattern <NUM>.

The first light blocking pattern <NUM> may be disposed on the substrate <NUM>. In an embodiment, the first light blocking pattern <NUM> may partially overlap the first color filter <NUM> and the second color filter <NUM>. The first light blocking pattern <NUM> may be disposed between the first color filter <NUM> and the second color filter <NUM> that partially overlap each other. For example, the first color filter <NUM> may be disposed on the substrate <NUM> while covering a portion of the first light blocking pattern <NUM>, and the second color filter <NUM> may be disposed on the substrate <NUM> while covering another portion of the first light blocking pattern <NUM>. The first light blocking pattern <NUM> may be a wavelength-selective optical filter that transmits light of a specific wavelength band and blocks light of another specific wavelength band. In other words, the first light blocking pattern <NUM> may selectively transmit only a partial wavelength band of light incident thereon. For example, the first light blocking pattern <NUM> may include substantially the same material as the third color filter <NUM>.

The first color conversion pattern <NUM> may be disposed on the substrate <NUM> with the first color filter <NUM> interposed therebetween. In other words, the first color filter <NUM> may be disposed between the substrate <NUM> and the first color conversion pattern <NUM>. The first color conversion pattern <NUM> may convert incident light into transmitted light having a color different from a color of the incident light. In other words, the light transmitted through the first color conversion pattern <NUM> may be converted into light of a predetermined specific wavelength band. The first color conversion pattern <NUM> may include a first color conversion material 331p, which is a material that converts a peak wavelength of the incident light into a predetermined specific peak wavelength.

In an embodiment, the first color conversion pattern <NUM> may convert a color of the incident light LI provided by the display panel <NUM>. For example, the first color conversion pattern <NUM> may convert the incident light LI including the peak wavelength of the third color into the first light L1 including the peak wavelength of the first color. The incident light LI provided by the display panel <NUM> may be converted into the first light L1 by the first color conversion pattern <NUM>, and the first light L1 may be emitted to above the color conversion panel <NUM> through the first color filter <NUM>. Accordingly, the first pixel PX1 may display the first color.

The second color conversion pattern <NUM> may be disposed on the substrate <NUM> with the second color filter <NUM> interposed therebetween. In other words, the second color filter <NUM> may be disposed between the substrate <NUM> and the second color conversion pattern <NUM>. The second color conversion pattern <NUM> may convert incident light into transmitted light having a color different from a color of the incident light. In other words, the light transmitted through the second color conversion pattern <NUM> may be converted into light of a predetermined specific wavelength band. The second color conversion pattern <NUM> may include a second color conversion material 332p, which is a material that converts a peak wavelength of the incident light into a predetermined specific peak wavelength.

In an embodiment, the second color conversion pattern <NUM> may convert a color of the incident light LI provided by the display panel <NUM>. For example, the second color conversion pattern <NUM> may convert the incident light LI including the peak wavelength of the third color into the second light L2 including the peak wavelength of the second color. The incident light LI provided by the display panel <NUM> may be converted into the second light L2 by the second color conversion pattern <NUM>, and the second light L2 may be emitted to above the color conversion panel <NUM> through the second color filter <NUM>. Accordingly, the second pixel PX2 may display the second color.

In an embodiment, a height of the second color conversion pattern <NUM> from the substrate <NUM> may be substantially equal to a height of the first color conversion pattern <NUM> from the substrate <NUM>. The height of the first color conversion pattern <NUM> may be a distance from the substrate <NUM> to a lower surface of the first color conversion pattern <NUM>, and the height of the second color conversion pattern <NUM> may be a distance from the substrate <NUM> to a lower surface of the second color conversion pattern <NUM>.

The first color conversion material 331p may be a material that emits light having a peak wavelength of the first color. The size of the first color conversion material 331p may be about <NUM>Å to about <NUM>Å, however, the size of the first color conversion material 331p is not limited thereto. The second color conversion material 332p may be a material that emits light having a peak wavelength of the second color. The size of the second color conversion material 332p may be about <NUM>Å to about <NUM>Å, however, the size of the second color conversion material 332p is not limited thereto.

In an embodiment, each of the first color conversion pattern <NUM> and the second color conversion pattern <NUM> may include at least one of a quantum dot and a phosphor. In other words, each of the first color conversion material 331p and the second color conversion material 332p may be at least one of the quantum dot and the phosphor.

The quantum dot may emit a specific color when electrons transit from a conduction band to a valence band. The quantum dot may have a core-shell structure. The core may be a semiconductor nanocrystalline material. For example, the core may include silicon-based nanocrystals, II-VI-based compound nanocrystals, III-V-based compound nanocrystals, or the like, however, the material of the core is not limited thereto. For example, the quantum dot may include a core containing cadmium selenide (CdSe), cadmium telluride (CdTe), cadmium sulfide (CdS), or indium phosphide (InP) and a shell containing zinc sulfide (ZnS).

The second color conversion pattern <NUM> may partially overlap the first color conversion pattern <NUM>. A portion of the second color conversion pattern <NUM> may overlap a portion of the first color conversion pattern <NUM>. For example, the portion of the second color conversion pattern <NUM> may be positioned under the portion of the first color conversion pattern <NUM>. When the first color conversion pattern <NUM> and the second color conversion pattern <NUM> partially overlap, the volume of the first color conversion pattern <NUM> and the volume of the second color conversion pattern <NUM> may increase. Accordingly, color conversion efficiency of the first color conversion pattern <NUM> and color conversion efficiency of the second color conversion pattern <NUM> may increase.

The transmission pattern <NUM> may be disposed on the substrate <NUM> with the third color filter <NUM> interposed therebetween. In other words, the third color filter <NUM> may be disposed between the substrate <NUM> and the transmission pattern <NUM>. The transmission pattern <NUM> may transmit incident light while maintaining the color of the incident light. In other words, the light transmitted through the transmission pattern <NUM> may not be converted. The transmission pattern <NUM> may include a transmissive material 333p.

In an embodiment, the transmission pattern <NUM> may transmit the incident light LI provided by the display panel <NUM>. For example, the transmission pattern <NUM> may transmit the incident light LI including the peak wavelength of the third color, and may emit the third light L3 including the peak wavelength of the third color. The incident light LI provided by the display panel <NUM> may be transmitted through the transmission pattern <NUM>, and the third light L3 corresponding to the incident light LI may be emitted to above the color conversion panel <NUM> through the third color filter <NUM>. Accordingly, the third pixel PX3 may display the third color.

In an embodiment, a height of the transmission pattern <NUM> from the substrate <NUM> may be substantially equal to the height of the first color conversion pattern <NUM> from the substrate <NUM> and the height of the second color conversion pattern <NUM> from the substrate <NUM>. The height of the transmission pattern <NUM> may be a distance from the substrate <NUM> to a lower surface of the transmission pattern <NUM>.

The transmissive material 333p may be a light scattering material that induces scattering of light passing through the transmission pattern <NUM>. The transmissive material 333p is not particularly limited as long as it is a material capable of scattering or reflecting light, and may be, for example, a metal oxide, an organic material, or the like. For example, the metal oxide may include titanium oxide, zirconium oxide, aluminum oxide, indium oxide, zinc oxide, tin oxide or the like, and the organic material may include acrylic resin, urethane resin or the like.

The transmission pattern <NUM> may partially overlap the first color conversion pattern <NUM> and the second color conversion pattern <NUM>. A portion of the transmission pattern <NUM> may overlap a portion of the first color conversion pattern <NUM>, and another portion of the transmission pattern <NUM> may overlap a portion of the second color conversion pattern <NUM>. For example, the portion of the first color conversion pattern <NUM> may be positioned under the portion of the transmission pattern <NUM>, and the portion of the second color conversion pattern <NUM> may be positioned under the another portion of the transmission pattern <NUM>. When the transmission pattern <NUM> partially overlaps the first color conversion pattern <NUM> and the second color conversion pattern <NUM>, the volume of the first color conversion pattern <NUM>, the volume of the second color conversion pattern <NUM>, and the volume of the transmission pattern <NUM> may increase. Accordingly, color conversion efficiency of the first color conversion pattern <NUM> and color conversion efficiency of the second color conversion pattern <NUM> may increase.

The first reflective partition wall <NUM> may be disposed between the first color conversion pattern <NUM> and the second color conversion pattern <NUM>. For example, the first reflective partition wall <NUM> may be disposed on the second color filter <NUM> between the first color conversion pattern <NUM> and the second color conversion pattern <NUM> adjacent to each other. The first reflective partition wall <NUM> may reflect light emitted to a side <NUM> of the first color conversion pattern <NUM> and a side of the second color conversion pattern <NUM> to emit the light toward the substrate <NUM>. As the first reflective partition wall <NUM> is disposed between the first color conversion pattern <NUM> and the second color conversion pattern <NUM> partially overlapping each other, color mixture defects due to the partial overlap between the first color conversion pattern <NUM> and the second color conversion pattern <NUM> may be prevented.

The first reflective partition wall <NUM> may cover the side <NUM> of the first color conversion pattern <NUM>. The first reflective partition wall <NUM> may entirely cover the side <NUM> of the first color conversion pattern <NUM> positioned between the first color conversion pattern <NUM> and the second color conversion pattern <NUM>. The first reflective partition wall <NUM> may be formed along a profile of the side <NUM> of the first color conversion pattern <NUM> positioned between the first color conversion pattern <NUM> and the second color conversion pattern <NUM>. A height of the first reflective partition wall <NUM> from the substrate <NUM> may be substantially equal to the height of the first color conversion pattern <NUM> from the substrate <NUM>. The height of the first reflective partition wall <NUM> may be a distance from the substrate <NUM> to a lower surface of the first reflective partition wall <NUM>. In an example that is not covered by the claims, the first reflective partition wall <NUM> entirely covers the side <NUM> of the first color conversion pattern <NUM>, and the second color conversion pattern <NUM> does not contact the first color conversion pattern <NUM>. Accordingly, light emission efficiency of the first color conversion pattern <NUM> and the second color conversion pattern <NUM> may increase.

The second reflective partition wall <NUM> may be disposed between the first color conversion pattern <NUM> and the transmission pattern <NUM> and between the second color conversion pattern <NUM> and the transmission pattern <NUM>. For example, the second reflective partition wall <NUM> may be disposed on the first color filter <NUM> between the first color conversion pattern <NUM> and the transmission pattern <NUM> adjacent to each other and on the second color filter <NUM> between the second color conversion pattern <NUM> and the transmission pattern <NUM> adjacent to each other. The second reflective partition wall <NUM> may reflect light emitted to the side <NUM> of the first color conversion pattern <NUM>, a side of the second color conversion pattern <NUM>, and a side <NUM> of the transmission pattern <NUM> to emit the light toward the substrate <NUM>. As the second reflective partition wall <NUM> is disposed between the first color conversion pattern <NUM> and the transmission pattern <NUM> partially overlapping each other and between the second color conversion pattern <NUM> and the transmission pattern <NUM> partially overlapping each other, color mixture defects due to the partial overlap between the first color conversion pattern <NUM> and the transmission pattern <NUM> and color mixture defects due to the partial overlap between the second color conversion pattern <NUM> and the transmission pattern <NUM> may be prevented.

The second reflective partition wall <NUM> may cover the side <NUM> of the transmission pattern <NUM>. The second reflective partition wall <NUM> may entirely cover the side <NUM> of the transmission pattern <NUM> positioned between the transmission pattern <NUM> and the first color conversion pattern <NUM> and between the transmission pattern <NUM> and the second color conversion pattern <NUM>. The second reflective partition wall <NUM> may be formed along a profile of the side <NUM> of the transmission pattern <NUM> positioned between the transmission pattern <NUM> and the first color conversion pattern <NUM> and between the transmission pattern <NUM> and the second color conversion pattern <NUM>. A height of the second reflective partition wall <NUM> from the substrate <NUM> may be substantially equal to the height of the transmission pattern <NUM> from the substrate <NUM>. The height of the second reflective partition wall <NUM> may be a distance from the substrate <NUM> to a lower surface of the second reflective partition wall <NUM>. In an example that is not covered by the claims, the second reflective partition wall <NUM> entirely covers the side <NUM> of the transmission pattern <NUM>, and the transmission pattern <NUM> does not contact the first color conversion pattern <NUM> and the second color conversion pattern <NUM>. Accordingly, light emission efficiency of the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> may increase.

The first reflective partition wall <NUM> and the second reflective partition wall <NUM> may include a material capable of reflecting light, for example, a material having a reflectance of about <NUM>% or more. In an embodiment, the first reflective partition wall <NUM> and the second reflective partition wall <NUM> may have a single-layer structure including aluminum (Al), etc. or a multilayer structure including indium tin oxide (ITO)-silver (Ag)-ITO, titanium (Ti)-Al-Ti, Al-manganese tin oxide (MTO), etc., however, materials of the first and second reflective partition walls <NUM> and <NUM> are not limited thereto. In an embodiment, the first reflective partition wall <NUM> and the second reflective partition wall <NUM> may include substantially the same material.

As the first color conversion pattern <NUM> and the second color conversion pattern <NUM> of the color conversion panel <NUM> of the display device according to the embodiment partially overlap, color conversion efficiency of the color conversion panel <NUM> may be improved. Further, as the first reflective partition wall <NUM> is disposed between the first color conversion pattern <NUM> and the second color conversion pattern <NUM> which partially overlap each other, color mixture of the color conversion panel <NUM> may be prevented. Accordingly, a high-resolution display device in which color conversion efficiency is improved and color mixture is prevented may be provided.

<FIG> is a cross-sectional view illustrating a color conversion panel according to an embodiment. This color conversion panel is according to the claimed invention.

Referring to <FIG>, a color conversion panel <NUM> according to an embodiment includes a substrate <NUM>, a first color filter <NUM>, a second color filter <NUM>, a third color filter <NUM>, a first light blocking pattern <NUM>, a first color conversion pattern <NUM>, a second color conversion pattern <NUM>, a transmission pattern <NUM>, a first reflective partition wall <NUM>, and a second reflective partition wall <NUM>. Descriptions on components of the color conversion panel <NUM> described with reference to <FIG>, which are substantially the same as or similar to those of the color conversion panel <NUM> described with reference to <FIG>, will not be repeated.

A height of the first reflective partition wall <NUM> from the substrate <NUM> is less than a height of the first color conversion pattern <NUM> from the substrate <NUM>. The first reflective partition wall <NUM> covers a portion of a side of the first color conversion pattern <NUM> close to the substrate <NUM>, and does not cover another portion of the side of the first color conversion pattern <NUM> far from the substrate <NUM>. Accordingly, the second color conversion pattern <NUM> contacts the first color conversion pattern <NUM> under the first reflective partition wall <NUM>. The second color conversion pattern <NUM> covers the first reflective partition wall <NUM>, and the first reflective partition wall <NUM> is not exposed to the outside by the second color conversion pattern <NUM>. Accordingly, reflection of incident light by the first reflective partition wall <NUM> exposed to the outside may be prevented.

A height of the second reflective partition wall <NUM> from the substrate <NUM> may be less than a height of the transmission pattern <NUM> from the substrate <NUM>. The second reflective partition wall <NUM> may cover a portion of a side of the transmission pattern <NUM> close to the substrate <NUM>, and may not cover another portion of the side of the transmission pattern <NUM> far from the substrate <NUM>. Accordingly, the first color conversion pattern <NUM> and the second color conversion pattern <NUM> may contact the transmission pattern <NUM> under the second reflective partition wall <NUM>. The first color conversion pattern <NUM> and the second color conversion pattern <NUM> may cover the second reflective partition wall <NUM>, and the second reflective partition wall <NUM> may not be exposed to the outside by the first color conversion pattern <NUM> and the second color conversion pattern <NUM>. Accordingly, reflection of incident light by the second reflective partition wall <NUM> exposed to the outside may be prevented.

<FIG> is a cross-sectional view illustrating a color conversion panel according to an embodiment. This embodiment is not according to the claimed invention.

Referring to <FIG>, a color conversion panel <NUM> according to an embodiment may include a substrate <NUM>, a first color filter <NUM>, a second color filter <NUM>, a third color filter <NUM>, a first light blocking pattern <NUM>, a first color conversion pattern <NUM>, a second color conversion pattern <NUM>, a transmission pattern <NUM>, a first reflective partition wall <NUM>, a second reflective partition wall <NUM>, and a second light blocking pattern <NUM>. Descriptions on components of the color conversion panel <NUM> described with reference to <FIG>, which are substantially the same as or similar to those of the color conversion panel <NUM> described with reference to <FIG> will not be repeated.

The second light blocking pattern <NUM> partially overlapping the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> may be disposed between the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM>. The second light blocking pattern <NUM> may be disposed between the substrate <NUM> and the first color conversion pattern <NUM>, between the substrate <NUM> and the second color conversion pattern <NUM>, and between the substrate <NUM> and the transmission pattern <NUM>. For example, a portion of the second light blocking pattern <NUM> positioned between the first color conversion pattern <NUM> and the second color conversion pattern <NUM> may be disposed on the first light blocking pattern <NUM>, and another portion of the second light blocking pattern <NUM> positioned between the first color conversion pattern <NUM> and the transmission pattern <NUM> and between the second color conversion pattern <NUM> and the transmission pattern <NUM> may be disposed on the third color filter <NUM>.

The second light blocking pattern <NUM> may partition areas in which the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> are disposed. The second light blocking pattern <NUM> may block light transmission. The second light blocking pattern <NUM> may include a material capable of blocking transmission of light, for example, an organic material including a colorant such as a black pigment, a black dye, etc., however, the material of the second light blocking pattern <NUM> is limited thereto. For example, the colorant may include inorganic pigments such as carbon black, titanium black, lignin black, perylene black, cyanine black, etc., complex oxide pigments such as iron/manganese, etc., or a combination thereof.

A width of the second light blocking pattern <NUM> may be greater than a width of a first area OA<NUM> in which the first color conversion pattern <NUM> and the second color conversion pattern <NUM> overlap, a width of a second area OA2 in which the first color conversion pattern <NUM> and the transmission pattern <NUM> overlap, and a width of a third area OA3 in which the second color conversion pattern <NUM> and the transmission pattern <NUM> overlap. For example, each of the width of the first area OA1, the width of the second area OA2, and the width of the third area OA3 may be about <NUM> to about <NUM>, and the width of the second light blocking pattern <NUM> may be greater than about <NUM>. As the width of the second light blocking pattern <NUM> is greater than the width of the first area OA1, the width of the second area OA2, and the width of the third area OA3, the second light blocking pattern <NUM> may prevent color mixture defects between the first color conversion patterns <NUM>, the second color conversion patterns <NUM>, and the transmission patterns <NUM> adjacent to each other.

Referring to <FIG>, a color conversion panel <NUM> according to an embodiment may include a substrate <NUM>, a first color filter <NUM>, a second color filter <NUM>, a third color filter <NUM>, a first light blocking pattern <NUM>, a first color conversion pattern <NUM>, a second color conversion pattern <NUM>, a transmission pattern <NUM>, a first reflective partition wall <NUM>, a second reflective partition wall <NUM>, a second light blocking pattern <NUM>, and a third light blocking pattern <NUM>. Descriptions on components of the color conversion panel <NUM> described with reference to <FIG>, which are substantially the same as or similar to those of the color conversion panel <NUM> described with reference to <FIG>, will not be repeated.

The third light blocking pattern <NUM> partially overlapping the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> may be disposed between the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM>. The third light blocking pattern <NUM> may be disposed on the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM>. For example, a portion of the third light blocking pattern <NUM> positioned between the first color conversion pattern <NUM> and the second color conversion pattern <NUM> may cover the first reflective partition wall <NUM> that is not covered by the second color conversion pattern <NUM>, and another portion of the third light blocking pattern <NUM> positioned between the first color conversion pattern <NUM> and the transmission pattern <NUM> and between the second color conversion pattern <NUM> and the transmission pattern <NUM> may cover the second reflective partition wall <NUM> that is not covered by the first color conversion pattern <NUM> and the second color conversion pattern <NUM>.

The third light blocking pattern <NUM> may partition areas in which the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> are disposed. The third light blocking pattern <NUM> may block light transmission. The third light blocking pattern <NUM> may include a material capable of blocking transmission of light, for example, an organic material including a colorant such as a black pigment, a black dye, etc., however, the material of the third light blocking pattern <NUM> is limited thereto. In an embodiment, the third light blocking pattern <NUM> may include a material substantially the same as the material of the second light blocking pattern <NUM>.

A width of the third light blocking pattern <NUM> may be greater than a width of the first area OA1 in which the first color conversion pattern <NUM> and the second color conversion pattern <NUM> overlap, a width of the second area OA2 in which the first color conversion pattern <NUM> and the transmission pattern <NUM> overlap, and a width of the third area OA3 in which the second color conversion pattern <NUM> and the transmission pattern <NUM> overlap. For example, each of the width of the first area OA1, the width of the second area OA2, and the width of the third area OA3 may be about <NUM> to about <NUM>, and the width of the third light blocking pattern <NUM> may be greater than about <NUM>. As the width of the third light blocking pattern <NUM> is greater than the width of the first area OA1, the width of the second area OA2, and the width of the third area OA3, the third light blocking pattern <NUM> may prevent color mixture defects between the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> adjacent to each other.

<FIG>, <FIG>, <FIG>, <FIG>, and <FIG> are cross-sectional views illustrating a method of manufacturing a color conversion panel according to an embodiment. This embodiment is not according to the claimed invention. For example, <FIG>, <FIG>, <FIG>, <FIG>, and <FIG> may illustrate a method of manufacturing the color conversion panel <NUM> in <FIG>.

Referring to <FIG>, the transmission pattern <NUM> may be formed on the substrate <NUM>.

First, the third color filter <NUM> and the first light blocking pattern <NUM> may be formed on the substrate <NUM> to be spaced apart from each other. The third color filter <NUM> and the first light blocking pattern <NUM> may be substantially simultaneously formed of substantially the same material. Then, the second light blocking pattern <NUM> may be formed on the third color filter <NUM> and the first light blocking pattern <NUM>. Then, the first color filter <NUM> may be formed between the third color filter <NUM> and the first light blocking pattern <NUM> on the substrate <NUM> not covered by the third color filter <NUM>. Then, the second color filter <NUM> may be formed between the third color filter <NUM> and the first light blocking pattern <NUM> on the substrate <NUM> not covered by the first color filter <NUM> and the third color filter <NUM>.

Then, the transmission pattern <NUM> may be formed on the third color filter <NUM>. For example, the transmission pattern <NUM> may be formed to partially overlap the first color filter <NUM> and the second color filter <NUM>. In an embodiment, the transmission pattern <NUM> may be formed by a photolithography method. For example, a photosensitive resin including the transmissive material 633p may be applied on the substrate <NUM>, and may be patterned to form the transmission pattern <NUM>. In an embodiment, the transmission pattern <NUM> may be formed by an inkjet method. For example, an ink composition including the transmissive material 633p may be discharged on the third color filter <NUM>, and may be dried and cured to form the transmission pattern <NUM>. However, the method of forming the transmission pattern <NUM> is not limited to the photolithography method and the inkjet method described above, and the transmission pattern <NUM> may be formed by various methods such as a dispensing method, a printing method, a nanoimprinting method, a slit coating method, or the like.

Referring to <FIG>, the second reflective partition wall <NUM> covering the side of the transmission pattern <NUM> may be formed on the substrate <NUM> on which the transmission pattern <NUM> is formed. For example, the second reflective partition wall <NUM> may be formed on the first color filter <NUM> and the second color filter <NUM> to cover the side of the transmission pattern <NUM>.

In an embodiment, the second reflective partition wall <NUM> may be formed by chemical vapor deposition, sputtering, or the like. For example, a conductive material may be deposited on the substrate <NUM> on which the transmission pattern <NUM> is formed, and then may be patterned using a photolithography method to form the second reflective partition wall <NUM>. The second reflective partition wall <NUM> may be formed along a profile of the side of the transmission pattern <NUM>.

Referring to <FIG>, the first color conversion pattern <NUM> partially overlapping the transmission pattern <NUM> may be formed on the substrate <NUM> on which the second reflective partition wall <NUM> is formed. For example, the first color conversion pattern <NUM> may be formed to partially overlap the second color filter <NUM> and the third color filter <NUM>.

In an embodiment, the first color conversion pattern <NUM> may be formed by a photolithography method. For example, a photosensitive resin including the first color conversion material 631p may be applied on the substrate <NUM> on which the second reflective partition wall <NUM> is formed, and may be patterned to form the first color conversion pattern <NUM>. Alternatively, after a photosensitive resin is applied and patterned, the first color conversion material 631p may be injected to form the first color conversion pattern <NUM>. In an embodiment, the first color conversion pattern <NUM> may be formed by an inkjet method. For example, an ink composition including the first color conversion material 631p may be discharged on the first color filter <NUM>, and may be dried and cured to form the first color conversion pattern <NUM>. However, the method of forming the first color conversion pattern <NUM> is not limited to the photolithography method and the inkjet method described above, and the first color conversion pattern <NUM> may be formed by various methods such as a dispensing method, a printing method, a nanoimprinting method, a slit coating method, or the like.

Referring to <FIG>, the first reflective partition wall <NUM> covering the side of the first color conversion pattern <NUM> may be formed on the substrate <NUM> on which the first color conversion pattern <NUM> is formed. For example, the first reflective partition wall <NUM> may be formed on the second color filter <NUM> to cover the side of the first color conversion pattern <NUM>.

In an embodiment, the first reflective partition wall <NUM> may be formed by chemical vapor deposition, sputtering, or the like. For example, a conductive material may be deposited on the substrate <NUM> on which the first color conversion pattern <NUM> is formed, and may be patterned using a photolithography method to form the first reflective partition wall <NUM>. The first reflective partition wall <NUM> may be formed along a profile of the side of the first color conversion pattern <NUM>.

Referring to <FIG>, the second color conversion pattern <NUM> partially overlapping the transmission pattern <NUM> and the first color conversion pattern <NUM> may be formed on the substrate <NUM> on which the first reflective partition wall <NUM> is formed.

In an embodiment, the second color conversion pattern <NUM> may be formed by a photolithography method. For example, a photosensitive resin including the second color conversion material 632p may be applied on the substrate <NUM> on which the first reflective partition wall <NUM> is formed, and may be patterned to form the second color conversion pattern <NUM>. Alternatively, after a photosensitive resin is applied and patterned, the second color conversion material 632p may be injected to form the second color conversion pattern <NUM>. In an embodiment, the second color conversion pattern <NUM> may be formed by an inkjet method. For example, an ink composition including the second color conversion material 632p may be discharged on the second color filter <NUM>, and may be dried and cured to form the second color conversion pattern <NUM>. However, the method of forming the second color conversion pattern <NUM> is not limited to the photolithography method and the inkjet method described above, and the second color conversion pattern <NUM> may be formed by various methods such as a dispensing method, a printing method, a nanoimprinting method, a slit coating method, or the like.

Referring to <FIG>, the third light blocking pattern <NUM> may be formed on the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> between the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM>.

Referring to <FIG>, a color conversion panel <NUM> according to an embodiment may include a substrate <NUM>, a first color filter <NUM>, a second color filter <NUM>, a third color filter <NUM>, a first light blocking pattern <NUM>, a first color conversion pattern <NUM>, a second color conversion pattern <NUM>, a transmission pattern <NUM>, a first reflective partition wall <NUM>, a second reflective partition wall <NUM>, a third reflective partition wall <NUM>, a second light blocking pattern <NUM>, and a third light blocking pattern <NUM>. Descriptions on components of the color conversion panel <NUM> described with reference to <FIG>, which are substantially the same as or similar to those of the color conversion panel <NUM> described with reference to <FIG>, will not be repeated.

The second color conversion pattern <NUM> may be spaced apart from the first color conversion pattern <NUM>. In other words, the second color conversion pattern <NUM> may not overlap the first color conversion pattern <NUM>. For example, a width of the first color conversion pattern <NUM> may be less than a width of the first color filter <NUM>, and a width of the second color conversion pattern <NUM> may be less than a width of the second color filter <NUM>.

The transmission pattern <NUM> may be spaced apart from the first color conversion pattern <NUM> and the second color conversion pattern <NUM>. In other words, the transmission pattern <NUM> may not overlap the first color conversion pattern <NUM> and the second color conversion pattern <NUM>. For example, a width of the transmission pattern <NUM> may be less than a width of the third color filter <NUM>.

The first reflective partition wall <NUM> may be disposed on a side <NUM> of the first color conversion pattern <NUM> to cover the side <NUM> of the first color conversion pattern <NUM>. For example, the first reflective partition wall <NUM> may be disposed on the first color filter <NUM> while covering the side <NUM> of the first color conversion pattern <NUM>. The first reflective partition wall <NUM> may reflect light emitted to the side <NUM> of the first color conversion pattern <NUM>, and may emit the light toward the substrate <NUM>. Accordingly, light emission efficiency of the first color conversion pattern <NUM> may increase.

In an embodiment, the first reflective partition wall <NUM> may entirely cover the side <NUM> of the first color conversion pattern <NUM>. The first reflective partition wall <NUM> may be formed along a profile of the side <NUM> of the first color conversion pattern <NUM>. A height of the first reflective partition wall <NUM> from the substrate <NUM> may be substantially equal to a height of the first color conversion pattern <NUM> from the substrate <NUM>. The height of the first color conversion pattern <NUM> may be a distance from the substrate <NUM> to a lower surface of the first color conversion pattern <NUM>, and the height of the first reflective partition wall <NUM> may be a distance from the substrate <NUM> to a lower surface of the first reflective partition wall <NUM>.

The second reflective partition wall <NUM> may be disposed on a side <NUM> of the second color conversion pattern <NUM> to cover the side <NUM> of the second color conversion pattern <NUM>. For example, the second reflective partition wall <NUM> may be disposed on the second color filter <NUM> while covering the side <NUM> of the second color conversion pattern <NUM>. The second reflective partition wall <NUM> may reflect light emitted to the side <NUM> of the second color conversion pattern <NUM>, and may emit the light toward the substrate <NUM>. Accordingly, light emission efficiency of the second color conversion pattern <NUM> may increase.

In an embodiment, the second reflective partition wall <NUM> may entirely cover the side <NUM> of the second color conversion pattern <NUM>. The second reflective partition wall <NUM> may be formed along a profile of the side <NUM> of the second color conversion pattern <NUM>. A height of the second reflective partition wall <NUM> from the substrate <NUM> may be substantially equal to a height of the second color conversion pattern <NUM> from the substrate <NUM>. The height of the second color conversion pattern <NUM> may be a distance from the substrate <NUM> to a lower surface of the second color conversion pattern <NUM>, and the height of the second reflective partition wall <NUM> may be a distance from the substrate <NUM> to a lower surface of the second reflective partition wall <NUM>.

In an embodiment, the second reflective partition wall <NUM> may be spaced apart from the first reflective partition wall <NUM>. In other words, a gap may be formed between the first reflective partition wall <NUM> and the second reflective partition wall <NUM>.

The third reflective partition wall <NUM> may be disposed on a side <NUM> of the transmission pattern <NUM> to cover the side <NUM> of the transmission pattern <NUM>. For example, the third reflective partition wall <NUM> may be disposed on the second light blocking pattern <NUM> while covering the side <NUM> of the transmission pattern <NUM>. The third reflective partition wall <NUM> may reflect light emitted to the side <NUM> of the transmission pattern <NUM>, and may emit the light toward the substrate <NUM>. Accordingly, light emission efficiency of the transmission pattern <NUM> may increase.

In an embodiment, the third reflective partition wall <NUM> may entirely cover the side <NUM> of the transmission pattern <NUM>. The third reflective partition wall <NUM> may be formed along a profile of the side <NUM> of the transmission pattern <NUM>. A height of the third reflective partition wall <NUM> from the substrate <NUM> may be substantially equal to a height of the transmission pattern <NUM> from the substrate <NUM>. The height of the transmission pattern <NUM> may be a distance from the substrate <NUM> to a lower surface of the transmission pattern <NUM>, and the height of the third reflective partition wall <NUM> may be a distance from the substrate <NUM> to a lower surface of the third reflective partition wall <NUM>.

In an embodiment, the third reflective partition wall <NUM> may be spaced apart from the first reflective partition wall <NUM> and the second reflective partition wall <NUM>. In other words, gaps may be formed between the first reflective partition wall <NUM> and the third reflective partition wall <NUM> and between the second reflective partition wall <NUM> and the third reflective partition wall <NUM>, respectively.

The third light blocking pattern <NUM> partially overlapping the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> may be disposed between the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM>. The third light blocking pattern <NUM> may be disposed on the first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> while covering the first reflective partition wall <NUM>, the second reflective partition wall <NUM>, and the third reflective partition wall <NUM>. In an embodiment, the third light blocking pattern <NUM> may fill the gaps formed between the first reflective partition wall <NUM>, the second reflective partition wall <NUM>, and the third reflective partition wall <NUM> spaced apart from each other.

<FIG>, <FIG>, <FIG>, and <FIG> are cross-sectional views illustrating a method of manufacturing a color conversion panel according to an embodiment. This embodiment is not according to the claimed invention. For example, <FIG>, <FIG>, <FIG>, and <FIG> may illustrate a method of manufacturing the color conversion panel <NUM> in <FIG>.

Descriptions on components of the method of manufacturing the color conversion panel <NUM> described with reference to <FIG>, <FIG>, <FIG>, and <FIG>, which are substantially the same as or similar to those of the method of manufacturing the color conversion panel <NUM> described with reference to <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>, will not be repeated.

Referring to <FIG>, the transmission pattern <NUM> may be formed on the substrate <NUM>. The transmission pattern <NUM> may be formed on the third color filter <NUM>. For example, the transmission pattern <NUM> may be formed so as not to overlap the first color filter <NUM> and the second color filter <NUM>.

Referring to <FIG>, the first color conversion pattern <NUM> spaced apart from the transmission pattern <NUM> may be formed on the substrate <NUM> on which the transmission pattern <NUM> is formed. The first color conversion pattern <NUM> may be formed on the first color filter <NUM>. For example, the first color conversion pattern <NUM> may be formed so as not to overlap the second color filter <NUM> and the third color filter <NUM>.

Referring to <FIG>, the second color conversion pattern <NUM> spaced apart from the transmission pattern <NUM> and the first color conversion pattern <NUM> may be formed on the substrate <NUM> on which the transmission pattern <NUM> and the first color conversion pattern <NUM> are formed. The second color conversion pattern <NUM> may be formed on the second color filter <NUM>. For example, the second color conversion pattern <NUM> may be formed so as not to overlap the first color filter <NUM>.

In the method of manufacturing the color conversion pattern <NUM> described above, the first color conversion pattern <NUM> is formed after the formation of the transmission pattern <NUM>, and the second color conversion pattern <NUM> is formed after the formation of the first color conversion pattern <NUM>, however, the method of manufacturing the color conversion pattern <NUM> is not limited thereto. The first color conversion pattern <NUM>, the second color conversion pattern <NUM>, and the transmission pattern <NUM> may be sequentially formed in an arbitrary order, or may be substantially simultaneously formed.

Referring to <FIG>, the first reflective partition wall <NUM> covering the side of the first color conversion pattern <NUM>, the second reflective partition wall <NUM> covering the side of the second color conversion pattern <NUM>, and the third reflective partition wall <NUM> covering the side of the transmission pattern <NUM> may be formed on the substrate <NUM> on which the transmission pattern <NUM>, the first color conversion pattern <NUM>, and the second color conversion pattern <NUM> are formed. For example, the first reflective partition wall <NUM> may be formed on the first color filter <NUM> to cover the side of the first color conversion pattern <NUM>, the second reflective partition wall <NUM> may be formed on the second color filter <NUM> to cover the side of the second color conversion pattern <NUM>, and the third reflective partition wall <NUM> may be formed on the third color filter <NUM> to cover the side of the transmission pattern <NUM>.

In an embodiment, the first reflective partition wall <NUM>, the second reflective partition wall <NUM>, and the third reflective partition wall <NUM> may be substantially simultaneously formed of substantially the same material. For example, a conductive material may be deposited on the substrate <NUM> on which the transmission pattern <NUM>, the first color conversion pattern <NUM>, and the second color conversion pattern <NUM> are formed, and may be patterned using a photolithography method, etc. to form the first reflective partition wall <NUM>, the second reflective partition wall <NUM>, and the third reflective partition wall <NUM>. The first reflective partition wall <NUM>, the second reflective partition wall <NUM>, and the third reflective partition wall <NUM> may be formed along a profile of the side of the first color conversion pattern <NUM>, a profile of the side of the second color conversion pattern <NUM>, and a profile of the side of the transmission pattern <NUM>, respectively. Accordingly, manufacturing cost and manufacturing time for forming the first reflective partition wall <NUM>, the second reflective partition wall <NUM>, and the third reflective partition wall <NUM> may be reduced.

<FIG> is a cross-sectional view illustrating an example of the display device taken along a line I-I' in <FIG>. This display is not according to the claimed invention.

Referring to <FIG> and <FIG>, a display device according to an embodiment may include a display panel <NUM>, a color conversion panel <NUM>, and a backlight unit <NUM>.

The backlight unit <NUM> may overlap the display panel <NUM>. The backlight unit <NUM> may be positioned under the display panel <NUM>. The backlight unit <NUM> may include a light source generating light and a light guide plate receiving the light and guiding the light toward the display panel <NUM>. The backlight unit <NUM> may provide incident light LI to the display panel <NUM>. In an embodiment, the backlight unit <NUM> may provide the incident light LI of a third color having a peak wavelength within a range of about <NUM> to about <NUM> to the display panel <NUM>.

The display panel <NUM> may include a base substrate <NUM>, a polarizing layer <NUM>, a gate line <NUM>, a gate insulation layer <NUM>, a data line <NUM>, a passivation layer <NUM>, a first electrode <NUM>, a liquid crystal layer <NUM>, and a second electrode <NUM>. The display panel <NUM> may control the incident light LI provided from the backlight unit <NUM>, and may provide the incident light LI to the color conversion panel <NUM>.

The polarizing layer <NUM> may be disposed between the backlight unit <NUM> and the base substrate <NUM>. The polarizing layer <NUM> may be a coated polarizing layer, a wire grid polarizer, or the like.

A gate electrode and the gate line <NUM> may be disposed on the base substrate <NUM>. The gate line <NUM> may transmit a gate signal, and may extend along one direction. The gate insulation layer <NUM> including silicon nitride, silicon oxide, or the like may be disposed on the gate electrode and the gate line <NUM>.

A semiconductor layer, a source electrode, a drain electrode, and the data line <NUM> may be disposed on the gate insulation layer <NUM>. The semiconductor layer may overlap the gate electrode, the source electrode and the drain electrode may be connected to the semiconductor layer, and the data line <NUM> may transmit a data signal and extend in a direction crossing the gate line <NUM>. The gate electrode, the semiconductor layer, the source electrode, and the drain electrode may form a thin film transistor. The passivation layer <NUM> including an inorganic insulation material such as silicon nitride or silicon oxide and/or an organic insulation material such as polyimide may be disposed on the semiconductor layer, the source electrode, the drain electrode, and the data line <NUM>.

The first electrode <NUM> including a conductive material may be disposed on the passivation layer <NUM>. The first electrode <NUM> may be connected to the source electrode or the drain electrode. The second electrode <NUM> including a conductive material may be disposed on the first electrode <NUM>.

The liquid crystal layer <NUM> may be disposed between the first electrode <NUM> and the second electrode <NUM>. The liquid crystal layer <NUM> may include liquid crystal molecules <NUM>. The arrangement direction of the liquid crystal molecules <NUM> may be controlled by an electric field formed between the first electrode <NUM> and the second electrode <NUM>. The liquid crystal layer <NUM> may control the transmittance of the incident light LI of the third color provided from the backlight unit <NUM> based on the electric field formed between the first electrode <NUM> and the second electrode <NUM>, and may emit the incident light LI upward.

The color conversion panel <NUM> may overlap the display panel <NUM>. The color conversion panel <NUM> may be positioned above the display panel <NUM>. The color conversion panel <NUM> may include a substrate <NUM>, a first color filter <NUM>, a second color filter <NUM>, a third color filter <NUM>, a first color conversion pattern <NUM>, a second color conversion pattern <NUM>, a transmission pattern <NUM>, a first reflective partition wall <NUM>, and a second reflective partition wall <NUM>. The color conversion panel <NUM> may receive the incident light LI provided from the backlight unit <NUM> and controlled by the display panel <NUM>, and may emit first light L1, second light L2, and third light L3 upward.

The display device according to the embodiments of the present invention may be applied to a display device included in a computer, a notebook, a mobile phone, a smartphone, a smart pad, a PMP, a PDA, an MP3 player, or the like.

Although the display devices and the color conversion panels according to the embodiments of the present invention have been described with reference to the drawings, the illustrated embodiments are examples and the scope of the present invention is defined in the following claims.

Claim 1:
A color conversion panel including:
a substrate (<NUM>);
a first color conversion pattern (<NUM>) disposed on a lower surface of the substrate;
a second color conversion pattern (<NUM>) disposed on the lower surface of the substrate and partially overlapping the first color conversion pattern;
a first reflective partition wall (<NUM>) disposed between the first color conversion pattern and the second color conversion pattern, wherein the second color conversion pattern contacts the first color conversion pattern under the first reflective partition wall;
a first color filter (<NUM>) disposed between the substrate and the first color conversion pattern; and
a second color filter (<NUM>) disposed between the substrate and the second color conversion pattern.