Tiled display apparatus

Abstract

A tiled display apparatus is provided. The tiled display apparatus includes a first display apparatus including a display substrate having a plurality of light emitting regions and a color conversion substrate including a plurality of transmission regions disposed corresponding to each of the plurality of light emitting regions and equipped with a light scattering substance and a plurality of light blocking regions disposed between the plurality of transmission regions, a second display apparatus including the display substrate and the color conversion substrate and disposed at one side of the first display apparatus, and a light scattering member disposed between the first display apparatus and the second display apparatus and equipped with a light scattering substance, wherein an external light reflectance of the light scattering member is greater than an average of external light reflectances of the plurality of transmission regions and the plurality of light blocking regions.

Description

Technical Field

[0001] This invention relates to a splicing type display device. Background Technology

[0002] With the development of the information society, the requirements for display devices used to display images are increasing in various forms. For example, display devices are suitable for a variety of electronic devices such as smartphones, digital cameras, laptops, navigation devices, and smart TVs. Display devices can be flat panel displays such as liquid crystal displays (LCDs), field emission displays (FEPs), and organic light-emitting displays (OLEDs). In these flat panel displays, the light-emitting element includes a light-emitting element that enables each pixel in the display panel to emit its own light, thus allowing images to be displayed even when the display panel lacks a backlight unit to provide light.

[0003] When manufacturing display devices at large sizes, the increased number of pixels can lead to higher defect rates for light-emitting elements, potentially reducing productivity or reliability. To address this issue, video wall displays connect multiple relatively small display devices to create a large-scale screen. Due to the non-display areas or bezel areas of each of the adjacent display devices, video wall displays may include boundary sections between the multiple display devices, known as seams. When displaying a single image across the entire screen, these boundary sections between the multiple display devices create a sense of separation, reducing image immersion. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a splicing display device that prevents the boundary portions or non-display areas between multiple display devices from being identified, thereby eliminating the sense of separation between multiple display devices and improving the immersion of the image.

[0005] The subject matter of this invention is not limited to the subject matter mentioned above, and other technical subject matter not mentioned can be clearly understood by those skilled in the art through the following.

[0006] A splicing display device according to an embodiment for solving the above-mentioned problems includes: a first display device including a display substrate and a color conversion substrate, the display substrate having a plurality of light-emitting regions, the color conversion substrate including a plurality of transmissive regions arranged corresponding to each of the plurality of light-emitting regions and equipped with a light-scattering material, and a plurality of light-blocking regions arranged between the plurality of transmissive regions; a second display device including the display substrate and the color conversion substrate and arranged on one side of the first display device; and a light-scattering component arranged between the first display device and the second display device and equipped with a light-scattering material, wherein the external light reflectivity of the light-scattering component is greater than the average of the external light reflectivity of the plurality of transmissive regions and the external light reflectivity of the plurality of light-blocking regions.

[0007] The external light reflectivity of the light scattering component can be substantially the same as that of the color conversion substrate.

[0008] The external light reflectivity of the light scattering component can be less than the external light emissivity of the plurality of transmission regions, but greater than the external light reflectivity of the plurality of light blocking regions.

[0009] The color conversion substrate may include: a base component including the plurality of transmissive regions and the plurality of light-blocking regions; a plurality of color filters disposed on the base component; a plurality of wavelength conversion units disposed on the plurality of color filters corresponding to a portion of the transmissive regions of the plurality of transmissive regions and equipped with the light-scattering material; and a light transmission unit disposed on the plurality of color filters corresponding to another portion of the transmissive regions of the plurality of transmissive regions and equipped with the light-scattering material.

[0010] The plurality of color filters may include: a first color filter that selectively transmits light of a first color and overlaps with a first transmission region in the plurality of transmission regions; a second color filter that selectively transmits light of a second color and overlaps with a second transmission region in the plurality of transmission regions; and a third color filter that selectively transmits light of a third color and overlaps with a third transmission region in the plurality of transmission regions and the plurality of light-blocking regions.

[0011] The plurality of wavelength conversion units may include: a first wavelength conversion unit disposed on the first color filter, comprising a first wavelength transfer agent for converting the peak wavelength of incident light to a first peak wavelength and the light scattering material; and a second wavelength conversion unit disposed on the second color filter, comprising a second wavelength transfer agent for converting the peak wavelength of incident light to a second peak wavelength different from the first peak wavelength and the light scattering material.

[0012] The thickness of the first wavelength conversion section or the second wavelength conversion section may be greater than the thickness of the light scattering component.

[0013] The light-transmitting part can be arranged on the third color filter, and the light-transmitting part can use the light-scattering material to maintain the peak wavelength of the incident light so that the incident light can be transmitted.

[0014] The thickness of the light-transmitting part can be greater than the thickness of the light-scattering part.

[0015] The amount of light-scattering material per unit volume of the light-transmitting section can be greater than the amount of light-scattering material per unit volume of the light-scattering component.

[0016] Each of the first display device and the second display device may further include: a connecting pad disposed on the side of the display substrate and the color conversion substrate bonded together; and a flexible film disposed on one side of the connecting pad by means of an adhesive film.

[0017] The light scattering component may cover the upper surface of at least one of the connecting pad, the adhesive film, and the flexible film.

[0018] The splicing display device may further include: a light control film covering the first display device, the second display device, and the light scattering component.

[0019] The splicing display device may further include: a cover module that covers the sides and lower surfaces of the first display device and the second display device.

[0020] A splicing display device according to an embodiment for solving the above-mentioned problems may include: a first display device including a display substrate and a color conversion substrate, the display substrate including a plurality of light-emitting regions, the color conversion substrate including a plurality of transmissive regions arranged corresponding to each of the plurality of light-emitting regions and equipped with a light-scattering material, and a plurality of light-blocking regions arranged between the plurality of transmissive regions; a second display device including the display substrate and the color conversion substrate, and arranged on one side of the first display device; and a light scattering component arranged between the first display device and the second display device, and equipped with a light scattering material, wherein the external light reflectivity of the light scattering component may be substantially the same as the external light reflectivity of the color conversion substrate.

[0021] The external light reflectivity of the light scattering component can be less than the external light emissivity of the plurality of transmission regions, but greater than the external light reflectivity of the plurality of light blocking regions.

[0022] The color conversion substrate may include: a base component including the plurality of transmissive regions and the plurality of light-blocking regions; a first color filter, a second color filter, and a third color filter disposed on the base component; a first wavelength conversion section disposed on the first color filter, including a first wavelength transfer agent that converts the peak wavelength of incident light to a first peak wavelength and the light scattering material; a second wavelength conversion section disposed on the second color filter, including a second wavelength transfer agent that converts the peak wavelength of incident light to a second peak wavelength different from the first peak wavelength and the light scattering material; and a light transmission section disposed on the third color filter, which uses the light scattering material to maintain the peak wavelength of incident light so that the incident light is transmitted.

[0023] The thickness of the first wavelength conversion section, the second wavelength conversion section, or the light transmission section may be greater than the thickness of the light scattering component.

[0024] The amount of light-scattering material per unit volume of the light-transmitting section can be greater than the amount of light-scattering material per unit volume of the light-scattering component.

[0025] Each of the first display device and the second display device may further include: a connecting pad disposed on the side of the display substrate and the color conversion substrate bonded together; and a flexible film disposed on one side of the connecting pad using an adhesive film, wherein the light scattering component may cover the upper surface of at least one of the connecting pad, the adhesive film and the flexible film.

[0026] Specific details of other embodiments are provided in the detailed description and accompanying drawings.

[0027] According to an embodiment, a splicing display device includes a light-scattering component disposed among multiple display devices and equipped with a light-scattering material, thereby making the external light reflectivity of the display area of ​​each of the multiple display devices substantially the same as the external light reflectivity of the non-display area between the multiple display devices. Therefore, the splicing display device prevents the boundary portions or non-display areas between the multiple display devices from being identified, thereby eliminating the sense of separation between the multiple display devices and enhancing image immersion.

[0028] The effects of the embodiments are not limited to those illustrated above, and more diverse effects are included in this specification. Attached Figure Description

[0029] Figure 1 This is a plan view showing a splicing type display device according to an embodiment.

[0030] Figure 2 This is a cross-sectional view of a display device according to an embodiment of a splicing type display device.

[0031] Figure 3 This is a plan view showing one side of the display substrate of a display device according to an embodiment.

[0032] Figure 4 This is a plan view showing another side of the display substrate of a display device according to one embodiment.

[0033] Figure 5 This is a plan view showing a color conversion substrate of a display device according to an embodiment.

[0034] Figure 6 It is along Figure 3 and Figure 5 A cross-sectional view cut by the cutting line I-I'.

[0035] Figure 7 This is a plan view showing the structure of a splicing display device according to an embodiment.

[0036] Figure 8 It is along Figure 7 A sectional view cut by the cutting line II-II'.

[0037] Figure 9 It is shown Figure 6 Enlarged view of the light scattering component and the first wavelength conversion section.

[0038] Figure 10 This is a diagram illustrating an example of the formation process of a light scattering component in a splicing display device according to an embodiment.

[0039] Figure 11 This is a diagram illustrating another example of the formation process of a light scattering component in a splicing display device according to one embodiment.

[0040] Figure 12 This is a figure illustrating yet another example of the formation process of a light scattering component in a splicing display device according to one embodiment.

[0041] Figures 13a to 13c This is a diagram illustrating the manufacturing process of a splicing display device according to one embodiment.

[0042] Figures 14a to 14c This is a diagram illustrating the manufacturing process of a splicing display device according to another embodiment.

[0043] Figures 15a to 15c This is a diagram illustrating the manufacturing process of a splicing display device according to yet another embodiment.

[0044] Figure 16a and Figure 16b This is a diagram illustrating the manufacturing process of a splicing display device according to yet another embodiment.

[0045] Explanation of reference numerals in the attached figures

[0046] TD: Video wall display device

[0047] 10: Display device; 100: Display substrate

[0048] 210: Multiple flexible membranes; 220: Multiple source drive units

[0049] 230: Source circuit board; 240: Multiple cables

[0050] 250: Control circuit board; 260: Timing control unit

[0051] 300: Color conversion substrate; 500: Filler

[0052] 600: Sealing component; 20: Light control film

[0053] 30: Cover Module Detailed Implementation

[0054] References and Appendix Figure 1 The advantages and features of the invention, as well as the methods for achieving them, will become clear from the detailed embodiments described below. However, the invention can take many different forms and is not limited to the embodiments disclosed below. These embodiments are provided only to complete the disclosure of the invention and to fully inform those skilled in the art of the invention of its scope. The invention is defined only by the scope of the claims.

[0055] The reference to elements or layers being "on" other elements or layers includes situations where they are immediately above or adjacent to other elements, or where other layers or elements are sandwiched in between. Throughout this specification, the same reference numerals refer to the same constituent elements. The shapes, sizes, proportions, angles, quantities, etc., disclosed in the drawings used to illustrate embodiments are exemplary, and therefore the invention is not limited to the matters illustrated.

[0056] Although terms such as "first" and "second" are used to describe multiple constituent elements, these constituent elements are clearly not limited to these terms. These terms are only used to distinguish one constituent element from another. Therefore, the "first constituent element" mentioned below can obviously also be a "second constituent element" within the technical concept of this invention.

[0057] The various features of the multiple embodiments of the present invention can be partially or wholly combined or integrated with each other, and can be linked and driven in various ways in terms of technology. Each embodiment can be implemented independently of each other, or can be implemented together in a related relationship.

[0058] The specific embodiments will now be described with reference to the accompanying drawings.

[0059] Figure 1 This is a plan view showing a splicing type display device according to an embodiment.

[0060] Reference Figure 1 A video wall display device TD may include multiple display devices 10. The multiple display devices 10 may be arranged in a grid pattern, but are not limited to this. The multiple display devices 10 may be connected along a first direction (X-axis direction) or a second direction (Y-axis direction), and the video wall display device TD may have a specific shape. For example, each of the multiple display devices 10 may have the same size as each other, but is not limited to this. As another example, the multiple display devices 10 may have different sizes than each other.

[0061] Each of the plurality of display devices 10 may be rectangular in shape, including a long side and a short side. The plurality of display devices 10 may be arranged such that their long or short sides are connected to each other. A portion of the display devices 10 may be arranged at the edge of the splicing display device TD to form one side of the splicing display device TD. A portion of the display devices 10 may be arranged at the corners of the splicing display device TD to form two adjacent sides of the splicing display device TD. Other portions of the display devices 10 may be arranged inside the splicing display device TD and may be surrounded by other display devices 10.

[0062] Each of the plurality of display devices 10 may include a display area DA and a non-display area NDA. The display area DA may include a plurality of pixels to display an image. The non-display area NDA may be arranged around the display area DA and may not display an image.

[0063] The splicing display device TD can have a planar shape overall, but it is not limited to this. The splicing display device TD can have a three-dimensional shape to give the user a sense of depth. For example, in the case where the splicing display device TD has a three-dimensional shape, at least a portion of the multiple display devices 10 can have a curved shape. As another example, each of the multiple display devices 10 has a planar shape and is connected to each other at a predetermined angle, so that the splicing display device TD can have a three-dimensional shape.

[0064] A video wall display device TD can be formed by connecting the respective non-display areas NDA of adjacent display devices 10. Multiple display devices 10 can be connected to each other using connecting or adhesive components. Therefore, the non-display areas NDA between multiple display devices 10 can be surrounded by adjacent display areas DA. The external light reflectivity of the display area DA of each of the multiple display devices 10 can be substantially the same as the external light reflectivity of the non-display areas NDA between the multiple display devices 10. Here, "substantially the same external light reflectivity of the display areas DA and the non-display areas NDA" means that the non-display areas NDA between the multiple display devices 10 or the boundary portions between the multiple display devices 10 will not be discernible to the user. Therefore, the video wall display device TD prevents the non-display areas NDA or boundary portions between multiple display devices 10 from being discernible, thereby eliminating the sense of separation between the multiple display devices 10 and enhancing image immersion.

[0065] Figure 2 This is a cross-sectional view of a display device according to an embodiment of a splicing type display device.

[0066] Reference Figure 2 The display device 10 may include a display substrate 100, a color conversion substrate 300, a filler 500, and a sealing component 600.

[0067] The display substrate 100 can emit light with a predetermined peak wavelength from multiple light-emitting regions of the display area DA. The display substrate 100 may include components and circuits for displaying images. For example, the display substrate 100 may include pixel circuits such as switching elements, pixel definition films that define the light-emitting regions of the display area DA, and self-light emitting elements.

[0068] For example, self-emissive elements can include organic light-emitting diodes (OLEDs), quantum dot light-emitting diodes (QDs), and inorganic-based light-emitting diodes. Inorganic-based light-emitting diodes can have a size of micrometers or nanometers. The following example illustrates and explains the case where the self-emissive element is an organic light-emitting diode.

[0069] A color conversion substrate 300 may be disposed on a display substrate 100 and may face the display substrate 100. The color conversion substrate 300 may include multiple transmissive regions corresponding to multiple light-emitting regions of the display substrate 100. The color conversion substrate 300 may convert the peak wavelength of light emitted from the light-emitting regions of the display substrate 100 to allow transmission, or it may maintain the peak wavelength of light emitted from the light-emitting regions of the display substrate 100 to allow transmission. For example, the display substrate 100 may emit light with a predetermined peak wavelength, and the color conversion substrate 300 may allow at least two types of light with different peak wavelengths to transmit.

[0070] The filler 500 can be disposed in the space between the display substrate 100 and the color conversion substrate 300, and can be surrounded by the sealing member 600. The filler 500 can fill the space between the display substrate 100 and the color conversion substrate 300. For example, the filler 500 can be made of an organic material and can allow light to pass through. The filler 500 can be made of silicon-based organic materials, epoxy-based organic materials, etc., but is not necessarily limited to these. As another example, the filler 500 can also be omitted.

[0071] A sealing member 600 may be sandwiched between the edge of the display substrate 100 and the edge of the color conversion substrate 300 in the non-display area NDA. The sealing member 600 may be arranged along the edges of the display substrate 100 and the color conversion substrate 300 in the non-display area NDA to seal the filler 500. The display substrate 100 and the color conversion substrate 300 may be bonded to each other through the sealing member 600. For example, the sealing member 600 may include an organic material. The sealing member 600 may be made of an epoxy resin, but is not necessarily limited to this.

[0072] Figure 3 This is a plan view showing one side of a display substrate of a display device according to an embodiment. Here, one side of the display substrate 100 may be the front surface or the top surface of the display substrate 100.

[0073] Reference Figure 3 The display substrate 100 may include a plurality of pixels arranged along a plurality of rows and columns in a display area DA. Each of the plurality of pixels may include a light-emitting area defined by a pixel definition film, and may emit light having a predetermined peak wavelength through the light-emitting area. For example, the display area DA of the display substrate 100 may include a first light-emitting area to a third light-emitting area LA1, LA2, LA3. Each of the first light-emitting area to the third light-emitting area LA1, LA2, LA3 may be a region in which light generated by the light-emitting element of the display substrate 100 is emitted toward the outside of the display substrate 100.

[0074] The first to third light-emitting regions LA1, LA2, and LA3 can emit light with a predetermined peak wavelength toward the outside of the display substrate 100. For example, the first to third light-emitting regions LA1, LA2, and LA3 can emit blue light. The light emitted from the first to third light-emitting regions LA1, LA2, and LA3 can have a peak wavelength in the range of 440 nm to 480 nm.

[0075] The first to third light-emitting regions LA1, LA2, and LA3 can be arranged sequentially and repeatedly along the first direction (X-axis direction) of the display area DA. For example, the width of the first light-emitting region LA1 in the first direction (X-axis direction) can be wider than the width of the second light-emitting region LA2 in the first direction, and the width of the second light-emitting region LA2 in the first direction can be wider than the width of the third light-emitting region LA3 in the first direction. The width of each of the first to third light-emitting regions LA1, LA2, and LA3 is not limited to... Figure 3 The embodiment shown. As another example, the width of the first light-emitting region LA1 in the first direction (X-axis direction), the width of the second light-emitting region LA2 in the first direction, and the width of the third light-emitting region LA3 in the first direction can be substantially the same.

[0076] For example, the area of ​​the first luminescent region LA1 can be larger than the area of ​​the second luminescent region LA2, and the area of ​​the second luminescent region LA2 can be larger than the area of ​​the third luminescent region LA3. The area of ​​each of the first to third luminescent regions LA1, LA2, and LA3 is not limited to a single area. Figure 3 The illustrated embodiment. As another example, the areas of the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 can be substantially the same.

[0077] Figure 4 This is a plan view showing another side of the display substrate of a display device according to one embodiment. Here, the other side of the display substrate 100 may be the rear surface or the lower surface of the display substrate 100.

[0078] Reference Figure 4 The display substrate 100 may include a first basic component SUB1.

[0079] The first base component SUB1 can be a base substrate and can be made of an insulating material such as a polymer resin. For example, the first base component SUB1 can be a rigid substrate. As another example, the first base component SUB1 can be a flexible substrate capable of bending, folding, rolling, etc. When the first base component SUB1 is a flexible substrate, it can be formed using polyimide (PI), but it is not necessarily limited to this.

[0080] The display device 10 may include multiple flexible films 210, multiple source driving units 220, source circuit boards 230, multiple cables 240, control circuit boards 250, and timing control units 260.

[0081] Each of the plurality of flexible films 210 can be disposed on the upper or lower side of the display substrate 100. The flexible film 210 can extend from the side of the display device 10 to the lower surface of the display substrate 100. For example, the flexible film 210 can be disposed on the side of the display substrate 100 and the color conversion substrate 300 via side bonding. One side of the flexible film 210 can be connected to the connection wiring of the display substrate 100 on the side of the display substrate 100, and the other side of the flexible film 210 can be connected to the source circuit board 230 on the lower surface of the display substrate 100. For example, the flexible film 210 can be an anisotropic conductive film (ACF) and can transmit signals from the source driving unit 220 or the source circuit board 230 to the display substrate 100.

[0082] Each of the plurality of source driving units 220 may be arranged on one side of each of the plurality of flexible films 210. For example, the source driving unit 220 may be an integrated circuit (IC). The source driving unit 220 may convert digital video data into analog data voltage based on the source control signal of the timing control unit 260, and may provide it to the data lines of the display substrate 100 through the flexible film 210.

[0083] The source circuit board 230 can be arranged between multiple flexible films 210 and multiple cables 240. The source circuit board 230 can be connected to multiple source driving units 220 or display substrate 100 through the multiple flexible films 210, and can be connected to control circuit board 250 or timing control unit 260 through the multiple cables 240. For example, the source circuit board 230 can be a flexible printed circuit board or a rigid printed circuit board. The multiple cables 240 can be flexible cables, but are not limited to this.

[0084] The control circuit board 250 can be connected to the source circuit board 230 via cable 240. For example, the control circuit board 250 can be a flexible printed circuit board (FPCB) or a rigid printed circuit board (RPCB).

[0085] The timing control unit 260 can be disposed on one side of the control circuit board 250. For example, the timing control unit 260 can be an integrated circuit. The timing control unit 260 can receive digital video data and timing signals from the system-on-a-chip of the system circuit board. The timing control unit 260 can generate source control signals based on the timing signals to control the driving timing of multiple source drive units 220. The timing control unit 260 can generate scan control signals based on the timing signals to control the driving timing of the scan drive unit.

[0086] The display device 10 may further include a power supply unit (not shown) disposed on the control circuit board 250. The power supply unit may generate the voltage required to drive the display substrate 100 by using the main power supply applied from the system circuit board. For example, the power supply unit may generate drive voltages to drive the plurality of source drive units 220, timing control units 260 and scan drive units.

[0087] Figure 5 This is a plan view showing a color conversion substrate of a display device according to an embodiment.

[0088] Reference Figure 5The color conversion substrate 300 can be disposed on the display substrate 100 and can face the display substrate 100. The color conversion substrate 300 can include a plurality of transmissive regions corresponding to a plurality of light-emitting regions of the display substrate 100 and a plurality of light-blocking regions surrounding the plurality of transmissive regions. For example, the color conversion substrate 300 can include first to third transmissive regions TA1, TA2, TA3 and first to third light-blocking regions BA1, BA2, BA3. Each of the first to third transmissive regions TA1, TA2, TA3 can correspond to each of the first to third light-emitting regions LA1, LA2, LA3 of the display substrate 100. Each of the first to third light-blocking regions BA1, BA2, BA3 can be disposed on one side of each of the first to third transmissive regions TA1, TA2, TA3 and can prevent color mixing of light emitted from the first to third transmissive regions TA1, TA2, TA3.

[0089] The color conversion substrate 300 can either convert the peak wavelength of light emitted from the light-emitting area of ​​the display substrate 100 to allow it to be transmitted, or maintain the peak wavelength of light emitted from the light-emitting area of ​​the display substrate 100 to allow it to be transmitted. For example, the first transmission area TA1 can convert the peak wavelength of the emitted light from the display substrate 100 to emit light of a first color. The second transmission area TA2 can convert the peak wavelength of the emitted light from the display substrate 100 to emit light of a second color different from the first color. The third transmission area TA3 can maintain the peak wavelength of the emitted light from the display substrate 100 to emit light of a third color different from both the first and second colors. For example, the first color light can be red light with a peak wavelength in the range of 610 nm to 650 nm, the second color light can be green light with a peak wavelength in the range of 510 nm to 550 nm, and the third color light can be blue light with a peak wavelength in the range of 440 nm to 480 nm.

[0090] The first to third transmission regions TA1, TA2, and TA3 can be arranged sequentially and repeatedly along the first direction (X-axis direction) of the display area DA. For example, the width of the first transmission region TA1 in the first direction (X-axis direction) can be wider than the width of the second transmission region TA2 in the first direction, and the width of the second transmission region TA2 in the first direction can be wider than the width of the third transmission region TA3 in the first direction. The width of each of the first to third transmission regions TA1, TA2, and TA3 is not limited to... Figure 5 The embodiment shown. As another example, the width of the first transmission region TA1 in the first direction (X-axis direction), the width of the second transmission region TA2 in the first direction, and the width of the third transmission region TA3 in the first direction can be substantially the same.

[0091] For example, the area of ​​the first transmission region TA1 can be larger than the area of ​​the second transmission region TA2, and the area of ​​the second transmission region TA2 can be larger than the area of ​​the third transmission region TA3. The area of ​​each of the first to third transmission regions TA1, TA2, and TA3 is not limited to a single area. Figure 5 The illustrated embodiment. As another example, the areas of the first transmission region TA1, the second transmission region TA2, and the third transmission region TA3 can be substantially the same.

[0092] Figure 6 It is along Figure 3 and Figure 5 A cross-sectional view cut by the cutting line I-I'.

[0093] Reference Figure 6 The display area DA of the display substrate 100 may include a first light-emitting area to a third light-emitting area LA1, LA2, LA3. Each of the first light-emitting area to the third light-emitting area LA1, LA2, LA3 may be an area in which light generated by the light-emitting element of the display substrate 100 is emitted toward the outside of the display substrate 100.

[0094] The display substrate 100 may include a first base component SUB1, a buffer layer BF, a thin film transistor layer TFTL, a light-emitting element EL, and an encapsulation layer TFE.

[0095] The first base component SUB1 can be a base substrate and can be made of an insulating material such as a polymer resin. For example, the first base component SUB1 can be a rigid substrate. As another example, the first base component SUB1 can be a flexible substrate capable of bending, folding, rolling, etc. When the first base component SUB1 is a flexible substrate, it can be formed using polyimide (PI), but it is not necessarily limited to this.

[0096] The buffer layer BF can be disposed on the first base component SUB1. The buffer layer BF can be constructed using an inorganic membrane capable of preventing the penetration of air or moisture. For example, the buffer layer BF may include multiple inorganic membranes stacked alternately. The buffer layer BF can be constructed using a multilayer film of at least one inorganic membrane selected from silicon nitride layer, silicon oxide nitride layer, silicon oxide layer, titanium oxide layer, and aluminum oxide layer stacked alternately, but is not necessarily limited to this.

[0097] The thin-film transistor layer (TFTL) may include a thin-film transistor (TFT), a gate insulating film (GI), a connection wiring layer (CWL), an interlayer insulating film (ILD), a protective layer (PAS), and a planarization layer (OC).

[0098] Thin-film transistors (TFTs) can be disposed on a buffer layer (BF) and can constitute the pixel circuit for each of multiple pixels. For example, a TFT can be a driving transistor or a switching transistor of a pixel circuit. A TFT may include a semiconductor layer (ACT), a gate electrode (GE), a source electrode (SE), and a drain electrode (DE).

[0099] The semiconductor layer ACT can be disposed on the buffer layer BF. The semiconductor layer ACT can overlap with the gate electrode GE, the source electrode SE, and the drain electrode DE. The semiconductor layer ACT can be in direct contact with the source electrode SE and the drain electrode DE, and the gate insulating film GI is placed in the middle facing the gate electrode GE.

[0100] The gate electrode GE can be positioned on top of the gate insulating film GI. Alternatively, the gate electrode GE can be positioned in the middle of the gate insulating film GI, overlapping with the semiconductor layer ACT.

[0101] The source electrode SE and drain electrode DE can be arranged to be spaced apart from each other on the interlayer insulating film ILD. The source electrode SE can contact one end of the semiconductor layer ACT through contact holes provided in the gate insulating film GI and the interlayer insulating film ILD. The drain electrode DE can contact the other end of the semiconductor layer ACT through contact holes provided in the gate insulating film GI and the interlayer insulating film ILD. The drain electrode DE can be connected to the first electrode AND of the light-emitting element EL through contact holes provided in the protective layer PAS and the planarization layer OC.

[0102] The gate insulating film GI can be disposed on top of the semiconductor layer ACT. For example, the gate insulating film GI can be disposed on top of the semiconductor layer ACT and the buffer layer BF, and can insulate the semiconductor layer ACT from the gate electrode GE. The gate insulating film GI may include a contact hole through the source electrode SE and a contact hole through the drain electrode DE.

[0103] Connection wiring (CWL) can be disposed on the gate insulating film (GI) around the periphery of the display substrate 100. The connection wiring (CWL) can be electrically connected to connection pads 700 disposed on the side of the display device 10, and can be connected to multiple data lines or multiple scan lines. The connection wiring (CWL) can be connected to multiple data lines to provide data voltage, and can be connected to multiple scan lines to provide scan signals. Figure 6 In this context, the interconnect wiring CWL can be formed on the same layer as the gate electrode GE of the thin-film transistor TFT using the same material, but it is not necessarily limited to this. As another example, the interconnect wiring CWL can be formed on the same layer as the source electrode SE or drain electrode DE of the thin-film transistor TFT using the same material.

[0104] The interlayer insulating film (ILD) can be disposed on top of the gate electrode GE. For example, the ILD may include a contact hole penetrating through the source electrode SE and a contact hole penetrating through the drain electrode DE. Here, the contact holes of the ILD can be connected to the contact holes of the gate insulating film GI.

[0105] A protective layer PAS can be disposed on the top of the thin-film transistor TFT to protect the thin-film transistor TFT. For example, the protective layer PAS may include a contact hole through which the first electrode AND passes.

[0106] A planarization layer OC can be disposed on top of the protective layer PAS to planarize the upper end of the thin-film transistor TFT. For example, the planarization layer OC may include a contact hole through which the first electrode AND of the light-emitting element EL is located. Here, the contact hole of the planarization layer OC can be connected to the contact hole of the protective layer PAS.

[0107] The light-emitting element (EL) can be mounted on a thin-film transistor (TFT). The light-emitting element (EL) may include a first electrode AND, a light-emitting layer E, and a second electrode CAT.

[0108] The first electrode AND can be disposed on the upper part of the planarization layer OC. For example, the first electrode AND can be arranged to overlap with one of the light-emitting regions LA1, LA2, LA3 defined by the pixel definition film PDL. Furthermore, the first electrode AND can be connected to the drain electrode DE of the thin-film transistor TFT.

[0109] The light-emitting layer E can be disposed on the upper part of the first electrode AND. The light-emitting layer E may include a hole injection layer, a hole transport layer, a light-receiving layer, an electron blocking layer, an electron transport layer, and an electron injection layer. For example, the light-emitting layer E may be an organic light-emitting layer made of organic materials, but it is not necessarily limited to this. When the light-emitting layer E is equivalent to an organic light-emitting layer, if the thin-film transistor TFT applies a predetermined voltage to the first electrode AND of the light-emitting element EL, and the second electrode CAT of the light-emitting element EL receives a common voltage or a cathode voltage, then holes and electrons can move to the light-emitting layer E through the hole transport layer and the electron transport layer, respectively, and the holes and electrons can combine with each other in the light-emitting layer E to emit light.

[0110] The second electrode CAT can be positioned on top of the light-emitting layer E. For example, the second electrode CAT can be implemented as an electrode shared by the entire pixel, rather than being divided among multiple pixels.

[0111] As another example, the light-emitting element (EL) may include an inorganic light-emitting diode (LED). In this case, the EL may have a size in micrometers or nanometers and may include an inorganic LED. The inorganic LED can be neatly arranged between two electrodes according to an electric field formed in a specific direction between two opposing electrodes. The inorganic LED may have a shape extending in one direction. The inorganic LED may have the shape of a rod, wire, tube, etc. The inorganic LED may be cylindrical or rod-shaped. Alternatively, the inorganic LED may have a polygonal shape such as a regular hexahedron, cuboid, or hexagonal prism, or have various shapes including a shape extending in one direction and partially tilted. The multiple semiconductors of the inorganic LED may have a structure in which they are arranged sequentially or stacked in one direction. The inorganic LED may include a first semiconductor layer, a second semiconductor layer, an active layer, an electrode layer, and an insulating film.

[0112] The pixel definition film (PDL) can define the first to third light-emitting regions LA1, LA2, and LA3. The PDL can also separate and insulate the first electrode AND of each of multiple light-emitting elements (ELs).

[0113] The TFE encapsulation layer can be placed on the second electrode CAT to cover multiple light-emitting elements (ELs). The TFE encapsulation layer can prevent oxygen or moisture from penetrating into the multiple light-emitting elements (ELs).

[0114] The color conversion substrate 300 can be disposed on the display substrate 100 and can face the display substrate 100. The color conversion substrate 300 may include a first transmissive region to a third transmissive region TA1, TA2, TA3 and a first light-blocking region to a third light-blocking region BA1, BA2, BA3. Each of the first transmissive region to the third transmissive region TA1, TA2, TA3 can correspond to each of the first light-emitting region to the third light-emitting region LA1, LA2, LA3 of the display substrate 100. Each of the first light-blocking region to the third light-blocking region BA1, BA2, BA3 can be disposed on one side of each of the first transmissive region to the third transmissive region TA1, TA2, TA3, and can prevent color mixing of light emitted from the first transmissive region to the third transmissive region TA1, TA2, TA3.

[0115] The color conversion substrate 300 may include a second base component SUB2, first color filters to third color filters CF1, CF2, CF3, a first cover layer CAP1, a first light-blocking component BK1, a second cover layer CAP2, a second light-blocking component BK2, a first wavelength conversion section WLC1, a second wavelength conversion section WLC2, a light transmission section LTU, and a third cover layer CAP3.

[0116] The second base component SUB2 can be a base substrate and can be constructed using an insulating material such as a polymer resin. The second base component SUB2 can include a transmissive material, allowing light emitted from the first transmission region to the third transmission regions TA1, TA2, and TA3 to be transmitted. For example, the second base component SUB2 can be a rigid substrate. As another example, the second base component SUB2 can be a flexible substrate capable of bending, folding, and rolling. When the second base component SUB2 is a flexible substrate, it can be formed using polyimide (PI), but it is not necessarily limited to this.

[0117] Optionally, a separate buffer layer can be arranged on the second base component SUB2 to prevent impurities from flowing into one side of the second base component SUB2. In this case, the first to third color filters CF1, CF2, and CF3 can be in direct contact with the buffer layer.

[0118] A first color filter CF1 can be disposed on the second base component SUB2 and can overlap with the first transmission region TA1. The first color filter CF1 can selectively transmit light of a first color (e.g., red light) and can block or absorb light of a second color (e.g., green light) and a third color (e.g., blue light). For example, the first color filter CF1 can be a red color filter and can include a red colorant. The red colorant can be made using red dye or red pigment.

[0119] The second color filter CF2 can be disposed on the second base component SUB2 and can overlap with the second transmission region TA2. The second color filter CF2 can selectively transmit light of a second color (e.g., green light) and can block or absorb light of a first color (e.g., red light) and a third color (e.g., blue light). For example, the second color filter CF2 can be a green color filter and can include a green colorant. The green colorant can be made using green dye or green pigment.

[0120] The third color filter CF3 can be disposed on the second base component SUB2 and can overlap with the third transmission region TA3. Furthermore, the third color filter CF3 can overlap with the first to third light-blocking regions BA1, BA2, and BA3. The third color filter CF3 overlaps with either the first or second color filter CF1 in each of the first to third light-blocking regions BA1, BA2, and BA3, thereby preventing color mixing of light emitted from the first to third transmission regions TA1, TA2, and TA3. The third color filter CF3 can selectively allow the transmission of a third color of light (e.g., blue light) and can block or absorb first color light (e.g., red light) and second color light (e.g., green light). For example, the third color filter CF3 can be a blue color filter and may include a blue colorant. The blue colorant can be made using blue dye or blue pigment.

[0121] When the third color filter CF3 includes a blue colorant, the external or reflected light passing through the third color filter CF3 can have a blue wavelength. The eye's sensitivity to different colors can vary depending on the color of the light. For example, the blue wavelength of light may be less sensitive to a user compared to green or red light. Therefore, because the third color filter CF3 includes a blue colorant, the user can perceive reflected light with relatively less sensitivity.

[0122] The first to third color filters CF1, CF2, and CF3 can absorb a portion of the light flowing into the color conversion substrate 300 from the outside of the display device 10, thereby reducing reflected light caused by external light. Therefore, the first to third color filters CF1, CF2, and CF3 can prevent color distortion caused by external light reflection.

[0123] The first cover layer CAP1 can cover the first to third color filters CF1, CF2, and CF3 in the display area DA, and can cover the second base component SUB2 in the non-display area NDA. The first cover layer CAP1 can prevent impurities such as moisture or air from penetrating from the outside to prevent damage or contamination to the first to third color filters CF1, CF2, and CF3. The first cover layer CAP1 can prevent the colorant contained in the first to third color filters CF1, CF2, and CF3 from diffusing to the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, or the light transmission section LTU, etc.

[0124] The first capping layer CAP1 may contain an inorganic material. For example, the first capping layer CAP1 may include at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, and silicon nitride.

[0125] Multiple light-blocking components BK can overlap with each of the first to third light-blocking regions BA1, BA2, BA3, and can be arranged on the first to third color filters CF1, CF2, CF3. The multiple light-blocking components BK can block light transmission. For example, the multiple light-blocking components BK prevent light from entering and mixing between the first to third transmission regions TA1, TA2, TA3, thereby improving color reproduction. The multiple light-blocking components BK can be arranged in a grid pattern around the first to third transmission regions TA1, TA2, TA3 on a plane. The multiple light-blocking components BK may include a first light-blocking component BK1 and a second light-blocking component BK2.

[0126] The first light-blocking component BK1 can be disposed on the first to third color filters CF1, CF2, and CF3. For example, the first light-blocking component BK1 can be directly disposed on the first cover layer CAP1 disposed on the first to third color filters CF1, CF2, and CF3. The first light-blocking component BK1 may include an organic light-blocking material. For example, the first light-blocking component BK1 may include a black organic material. The first light-blocking component BK1 can be formed by coating the organic light-blocking material and exposure processes.

[0127] The second cover layer CAP2 can cover the first cover layer CAP1 in the first to third transmission regions TA1, TA2, TA3 and the non-display region NDA, and can cover the first light-blocking component BK1 in the first to third light-blocking regions BA1, BA2, BA3. The second cover layer CAP2 can be additionally laminated on the first cover layer CAP1 to doubly prevent damage or contamination to the first to third color filters CF1, CF2, CF3. The second cover layer CAP2 can prevent the colorant contained in the first to third color filters CF1, CF2, CF3 from diffusing to the first wavelength conversion section WLC1 and the second wavelength conversion section WLC2 or the light transmission section LTU, etc.

[0128] The second capping layer CAP2 may include an inorganic material. The second capping layer CAP2 may be constructed using the same material as the first capping layer CAP1, or it may be constructed using a different material. For example, the second capping layer CAP2 may include at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, and silicon oxide nitride.

[0129] The second light-blocking component BK2 can be disposed on the first light-blocking component BK1. For example, the second light-blocking component BK2 can be disposed on the second cover layer CAP2 in the first light-blocking area to the third light-blocking area BA1, BA2, BA3. For example, the second cover layer CAP2 can cover the upper surface and both sides of the first light-blocking component BK1, and the second light-blocking component BK2 can be directly disposed on the second cover layer CAP2 covering the upper surface of the first light-blocking component BK1.

[0130] The second light-blocking component BK2 may include an organic light-blocking material and a liquid-repellent component. Here, the liquid-repellent component may be composed of a fluorinated monomer or a fluorinated polymer, specifically, it may include a fluorinated aliphatic polycarbonate. For example, the second light-blocking component BK2 may be composed of a black organic material containing a liquid-repellent component. The second light-blocking component BK2 may be formed through coating and exposure processes of the organic light-blocking material containing the liquid-repellent component.

[0131] The second light-blocking component BK2 includes a liquid-repellent component, thereby separating the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light-transmitting section LTU into corresponding transmission regions. For example, when the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light-transmitting section LTU are formed by an inkjet method, the ink composition can flow on the upper surface of the second light-blocking component BK2. In this case, because the second light-blocking component BK2 contains a liquid-repellent component, it can guide the ink composition to flow to each transmission region. Therefore, the second light-blocking component BK2 can prevent the ink composition from mixing.

[0132] Therefore, during the bonding process of the display substrate 100 and the color conversion substrate 300, the display device 10 can maintain the thickness of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU to be uniform, and can also maintain the thickness of the filler 500 filled between the display substrate 100 and the color conversion substrate 300 to be uniform. Thus, the display device 10 can prevent poor bonding and the occurrence of spots.

[0133] The first wavelength conversion section WLC1 can be arranged on the first color filter CF1 in a manner that overlaps with the first transmission region TA1. The first wavelength conversion section WLC1 can be surrounded by the light-blocking component BK. The first wavelength conversion section WLC1 may include a first base resin BS1, a first scatterer SCT1, and a first wavelength transfer agent WLS1.

[0134] The first base resin BS1 may include substances with relatively high light transmittance. The first base resin BS1 may be composed of transparent organic substances. For example, the first base resin BS1 may include at least one of the organic substances selected from epoxy resins, acrylic resins, cardo resins, and imide resins.

[0135] The first scatterer SCT1 may have a different refractive index than the first base resin BS1 and may form an optical interface with the first base resin BS1. For example, the first scatterer SCT1 may include a light-scattering material or light-scattering particles that scatter at least a portion of the transmitted light. For example, the first scatterer SCT1 may include metal oxides such as titanium oxide (TiO2), zirconium oxide (ZrO2), aluminum oxide (Al2O3), indium oxide (In2O3), zinc oxide (ZnO), or tin oxide (SnO2), or may include organic particles such as acrylic resins or urethane resins. The first scatterer SCT1 can scatter light in random directions independent of the incident direction of the incident light without substantially changing the peak wavelength of the incident light.

[0136] The first wavelength transfer agent WLS1 can transform or transfer the peak wavelength of the incident light to a first peak wavelength. For example, the first wavelength transfer agent WLS1 can transform blue light provided from the display substrate 100 into red light with a single peak wavelength in the range of 610 nm to 650 nm. The first wavelength transfer agent WLS1 can be a quantum dot, a quantum rod, or a phosphor. A quantum dot can be a particle-like material that emits a specific color by transferring electrons from the conduction band to the valence band.

[0137] For example, quantum dots can be semiconductor nanocrystal materials. Quantum dots can absorb light and emit light with a specific wavelength depending on their composition and size, exhibiting specific band gaps. Examples of semiconductor nanocrystals that are quantum dots include group IV nanocrystals, group II-VI compound nanocrystals, group III-V compound nanocrystals, group IV-VI nanocrystals, or combinations thereof.

[0138] Group II-VI compounds can be selected from the following groups: binary compounds selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, and mixtures thereof; and compounds selected from the group consisting of InZnP, AgInS, CuInS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, and CdZnSe. Ternary compounds selected from the group consisting of CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS and mixtures thereof; and quaternary compounds selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and mixtures thereof.

[0139] Group III-V compounds may be selected from the following groups: binary compounds selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; ternary compounds selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, InPSb, and mixtures thereof; and quaternary compounds selected from the group consisting of GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof.

[0140] Group IV-VI compounds can be selected from the following groups: binary compounds selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; ternary compounds selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; and quaternary compounds selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. Group IV elements can be selected from the group consisting of Si, Ge, and mixtures thereof. Group IV compounds can be binary compounds selected from the group consisting of SiC, SiGe, and mixtures thereof.

[0141] For example, binary, ternary, or quaternary compounds can exist within a particle at a uniform concentration, or they can exist within the same particle in a manner that divides the concentration distribution into locally different states.

[0142] For example, quantum dots can have a core-shell structure comprising a core containing the aforementioned nanocrystals and a shell surrounding the core. The shell of the quantum dot can function as a protective layer to maintain semiconductor properties by preventing chemical denaturation of the core, and as a charging layer to impart electrophoretic properties to the quantum dot. The shell can be single-layered or multi-layered. The interface between the core and the shell can have a concentration gradient where the concentration of the element present in the core decreases towards the center. The shell of the quantum dot can be composed of metal or non-metal oxides, semiconductor compounds, or combinations thereof.

[0143] For example, the oxides of metals or nonmetals can be binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, NiO, etc., or ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, CoMn2O4, etc., but the present invention is not limited thereto.

[0144] Alternatively, examples of semiconductor compounds may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, etc., but the present invention is not limited thereto.

[0145] The light emitted by the first wavelength transfer agent WLS1 can have a full width at half maximum (FWHM) of a emission wavelength spectrum of less than 45 nm, less than 40 nm, or less than 30 nm, and can further improve the color purity and color reproduction of the colors displayed by the display device 10. The light emitted by the first wavelength transfer agent WLS1 can be emitted in multiple directions regardless of the incident direction of the incident light. Therefore, the lateral recognition of red displayed in the first transmission region TA1 can be improved.

[0146] A portion of the blue light supplied from the display substrate 100 may pass through the first wavelength conversion unit WLC1 without being converted into red light by the first wavelength transfer agent WLS1. Light from the blue light supplied from the display substrate 100 that has not been converted by the first wavelength conversion unit WLC1 and is incident on the first color filter CF1 can be blocked by the first color filter CF1. Furthermore, the red light from the blue light supplied from the display substrate 100 that has been converted by the first wavelength conversion unit WLC1 can pass through the first color filter CF1 and be emitted to the outside. Therefore, the first transmission region TA1 can emit red light.

[0147] The second wavelength conversion section WLC2 can be arranged on the second color filter CF2 in a manner that overlaps with the second transmission region TA2. The second wavelength conversion section WLC2 can be surrounded by the light-blocking component BK. The second wavelength conversion section WLC2 may include the second base resin BS2, the second scatterer SCT2, and the second wavelength transfer agent WLS2.

[0148] The second base resin BS2 may include a substance with relatively high light transmittance. The second base resin BS2 may be composed of a transparent organic substance. For example, the second base resin BS2 may be composed of the same substance as the first base resin BS1, or it may be composed of a substance exemplified in the first base resin BS1.

[0149] The second scatterer SCT2 may have a different refractive index than the second base resin BS2 and may form an optical interface with the second base resin BS2. For example, the second scatterer SCT2 may include a light-scattering material or light-scattering particles that scatter at least a portion of the transmitted light. For example, the second scatterer SCT2 may be constructed using the same material as the first scatterer SCT1, or it may be constructed using the material exemplified in the first scatterer SCT1. The second scatterer SCT2 can scatter light in random directions independent of the incident direction of the incident light without substantially changing the peak wavelength of the incident light.

[0150] The second wavelength transfer agent WLS2 can transform or transfer the peak wavelength of the incident light to a second peak wavelength different from the first peak wavelength of the first wavelength transfer agent WLS1. For example, the second wavelength transfer agent WLS2 can transform blue light provided from the display substrate 100 into green light with a single peak wavelength in the range of 510 nm to 550 nm. The second wavelength transfer agent WLS2 can be a quantum dot, a quantum rod, or a phosphor. The second wavelength transfer agent WLS2 can include a substance having the same essence as the substance described in the description of the first wavelength transfer agent WLS1. The second wavelength transfer agent WLS2 can be composed of quantum dots, quantum rods, or phosphors, and is configured such that the wavelength transformation range of the second wavelength transfer agent WLS2 is different from that of the first wavelength transfer agent WLS1.

[0151] The light-transmitting unit (LTU) can be arranged on the third color filter (CF3) in a manner that overlaps with the third transmission region (TA3). The light-transmitting unit (LTU) can be surrounded by the light-blocking component (BK). The light-transmitting unit (LTU) can maintain the peak wavelength of the incident light to allow it to be transmitted. The light-transmitting unit (LTU) may include a third base resin (BS3) and a third scattering element (SCT3).

[0152] The third base resin BS3 may include a substance with relatively high light transmittance. The third base resin BS3 may be composed of a transparent organic substance. For example, the third base resin BS3 may be composed of the same substance as the first base resin BS1 or the second base resin BS2, or may be composed of a substance exemplified in the first base resin BS1 or the second base resin BS2.

[0153] The third scatterer SCT3 may have a different refractive index than the third base resin BS3 and may form an optical interface with the third base resin BS3. For example, the third scatterer SCT3 may include a light-scattering material or light-scattering particles that scatter at least a portion of the transmitted light. For example, the third scatterer SCT3 may be constructed using the same material as the first scatterer SCT1 or the second scatterer SCT2, or it may be constructed using the material exemplified in the first scatterer SCT1 or the second scatterer SCT2. The third scatterer SCT3 can scatter light in random directions independent of the incident direction of the incident light without substantially changing the peak wavelength of the incident light.

[0154] The third cover layer CAP3 can cover the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, the light transmission section LTU, and the light blocking component BK. For example, the third cover layer CAP3 can seal the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU to prevent damage or contamination to the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU. The third cover layer CAP3 can be made of the same material as the first cover layer CAP1 or the second cover layer CAP2, or it can be made of the material exemplified in the first cover layer CAP1 or the second cover layer CAP2.

[0155] The filler 500 can be disposed in the space between the display substrate 100 and the color conversion substrate 300, and can be surrounded by the sealing member 600. The filler 500 can fill the space between the display substrate 100 and the color conversion substrate 300. For example, the filler 500 can be made of an organic material and can allow light to pass through. The filler 500 can be made of silicon-based organic materials, epoxy-based organic materials, etc., but is not limited to these. As another example, the filler 500 can also be omitted.

[0156] A sealing member 600 may be sandwiched between the edge of the display substrate 100 and the edge of the color conversion substrate 300 in the non-display area NDA. The sealing member 600 may be arranged along the edges of the display substrate 100 and the color conversion substrate 300 in the non-display area NDA to seal the filler 500. The display substrate 100 and the color conversion substrate 300 may be bonded to each other through the sealing member 600. For example, the sealing member 600 may include an organic material. The sealing member 600 may be constructed using epoxy resins, but is not necessarily limited to this.

[0157] The display device 10 may also include a connecting pad 700 and an adhesive film 800.

[0158] The connection pad 700 may be disposed on at least one side of the display device 10. The connection pad 700 may extend from the side of the display substrate 100 to the side of the color conversion substrate 300. For example, the connection pad 700 may extend from the first base component SUB1 of the display substrate 100 to the second base component SUB2 of the color conversion substrate 300, but is not necessarily limited thereto. The connection pad 700 may receive various voltages or signals from the plurality of flexible films 210 and may provide such voltages or signals to the connection wiring CWL.

[0159] The adhesive film 800 can attach multiple flexible films 210 to one side of the connecting pad 700. One side of the adhesive film 800 can be attached to one side of the connecting pad 700, and the other side of the adhesive film 800 can be attached to one side of the multiple flexible films 210. For example, the adhesive film 800 can cover the entire connecting pad 700, but it is not necessarily limited to this. As another example, the adhesive film 800 can cover a portion of the connecting pad 700 and expose the remaining portion.

[0160] The adhesive film 800 may include anisotropic conductive film (ACF). When the adhesive film 800 includes anisotropic conductive film, the adhesive film 800 may be conductive in the area where the connecting pad 700 and the contact pads of the plurality of flexible films 210 are in contact, and the plurality of flexible films 210 may be electrically connected to the connecting pad 700.

[0161] Optionally, the adhesive film 800 can be omitted. In this case, the multiple flexible films 210 can directly contact the connecting pad 700. For example, the contact pads of the multiple flexible films 210 can be connected to the connecting pad 700 by means of ultrasonic bonding or welding.

[0162] Each of the plurality of flexible films 210 can be disposed on the upper or lower side of the display substrate 100. The flexible film 210 can extend from the side of the display device 10 to the lower surface of the display substrate 100. For example, the flexible film 210 can be disposed on the side of the display substrate 100 and the color conversion substrate 300 via side bonding. One side of the flexible film 210 can be connected to the connection wiring CWL of the display substrate 100 on the side of the display substrate 100, and the other side of the flexible film 210 can be connected to the source circuit board 230 on the lower surface of the display substrate 100. For example, the flexible film 210 can be an anisotropic conductive film (ACF) and can transmit signals from the source driving unit 220 or the source circuit board 230 to the display substrate 100.

[0163] The splicing display device TD may further include a light scattering component LSM disposed between multiple display devices 10. The light scattering component LSM may be disposed between the color conversion substrates 300 of the multiple display devices 10. The light scattering component LSM may cover the connecting pads 700, adhesive films 800, and flexible films 210 disposed on the sides of each of the multiple display devices 10. Therefore, the light scattering component LSM can control the external light reflectivity of the non-display area NDA between the multiple display devices 10.

[0164] The light scattering component LSM may include a base resin BS and a scatterer SCT.

[0165] The base resin BS may include a material with relatively high light transmittance. The base resin BS may be composed of a transparent organic material. For example, the base resin BS may be composed of the same material as the first to third base resins BS1, BS2, and BS3 of the color conversion substrate 300, or it may be composed of the material exemplified in the first to third base resins BS1, BS2, and BS3.

[0166] The scatterer SCT can have a different refractive index than the base resin BS and can form an optical interface with the base resin BS. For example, the scatterer SCT can include a light-scattering material or light-scattering particles that scatter at least a portion of the transmitted light. For example, the scatterer SCT can be constructed using the same material as the first to third scatterers SCT1, SCT2, and SCT3 of the color conversion substrate 300, or it can be constructed using the materials exemplified in the first to third scatterers SCT1, SCT2, and SCT3. The scatterer SCT can scatter light incident from the outside of the splicing display device TD in random directions, and a portion of the scattered light can be reflected back towards the outside of the splicing display device TD.

[0167] Figure 7 This is a plan view showing the structure of a splicing display device according to an embodiment. Figure 8 It is along Figure 7 A cross-sectional view cut by cutting line II-II'. Because... Figure 7 It is a splicing type display device that combines... Figure 1 and Figure 2 The display devices 10 connected to the multiple display devices will be described simply or omitted from the above description.

[0168] Reference Figure 7 and Figure 8 A video wall display device TD may include multiple display devices 10 and adhesive components AM. For example, a video wall display device TD may include a first display device to a fourth display device 10-1 to 10-4; however, the number of display devices 10 is not limited. Figure 7 The number of display devices 10 can be determined based on the size of each of the display devices 10 and the splicing display devices TD.

[0169] A splicing display device TD can be achieved by attaching the sides of adjacent display devices 10 to each other using adhesive members AM arranged between multiple display devices 10. The adhesive members AM can connect the sides of the first to fourth display devices 10-1 to 10-4, which are arranged in a grid pattern, to realize the splicing display device TD. For example, the adhesive members AM are formed of adhesive or double-sided tape with a relatively thin thickness, thereby minimizing the spacing between the multiple display devices 10.

[0170] Each of the first display device 10-1 and the second display device 10-2 may include a connecting pad 700, an adhesive film 800, and a flexible film 210 disposed between the first display device 10-1 and the second display device 10-2. For example, when the connecting pad 700, the adhesive film 800, and the flexible film 210 are disposed on both sides of the display device 10 (e.g., the upper and lower sides, or the left and right sides), each of the first display device 10-1 and the second display device 10-2 may include the connecting pad 700, the adhesive film 800, and the flexible film 210 disposed between the first display device 10-1 and the second display device 10-2.

[0171] As another example, when the connecting pad 700, adhesive film 800, and flexible film 210 are arranged on one side of the display device 10, one of the adjacent first display device 10-1 and second display device 10-2 may include the connecting pad 700, adhesive film 800, and flexible film 210 arranged between the first display device 10-1 and the second display device 10-2, while the other display device 10 may not include the connecting pad 700, adhesive film 800, and flexible film 210 arranged between the first display device 10-1 and the second display device 10-2. Therefore, with Figure 8 In different embodiments, the connecting pad 700, adhesive film 800 and flexible film 210 of one of the display devices 10 in the first display device 10-1 and the second display device 10-2 can be omitted.

[0172] The connection pad 700 may be disposed on at least one side of the display device 10. The connection pad 700 may extend from the side of the display substrate 100 to the side of the color conversion substrate 300. For example, the connection pad 700 may extend from the first base component SUB1 of the display substrate 100 to the second base component SUB2 of the color conversion substrate 300, but is not necessarily limited thereto. The connection pad 700 may receive various voltages or signals from the plurality of flexible films 210 and may provide such voltages or signals to the connection wiring CWL.

[0173] The adhesive film 800 can attach multiple flexible films 210 to one side of the connecting pad 700. One side of the adhesive film 800 can be attached to one side of the connecting pad 700, and the other side of the adhesive film 800 can be attached to one side of the multiple flexible films 210. For example, the adhesive film 800 can cover the entire connecting pad 700, but it is not necessarily limited to this. As another example, the adhesive film 800 can cover a portion of the connecting pad 700 and expose the remaining portion.

[0174] The adhesive film 800 may include anisotropic conductive film (ACF). When the adhesive film 800 includes anisotropic conductive film, the adhesive film 800 may be conductive in the area where the connecting pad 700 and the contact pads of the plurality of flexible films 210 are in contact, and the plurality of flexible films 210 may be electrically connected to the connecting pad 700.

[0175] Optionally, the adhesive film 800 can be omitted. In this case, the multiple flexible films 210 can directly contact the connecting pad 700. For example, the contact pads of the multiple flexible films 210 can be connected to the connecting pad 700 by means of ultrasonic bonding or welding.

[0176] Each of the plurality of flexible films 210 can be disposed on the upper or lower side of the display substrate 100. The flexible film 210 can extend from the side of the display device 10 to the lower surface of the display substrate 100. For example, the flexible film 210 can be disposed on the side of the display substrate 100 and the color conversion substrate 300 via side bonding. One side of the flexible film 210 can be connected to the connection wiring CWL of the display substrate 100 on the side of the display substrate 100, and the other side of the flexible film 210 can be connected to the source circuit board 230 on the lower surface of the display substrate 100. For example, the flexible film 210 can be an anisotropic conductive film (ACF) and can transmit signals from the source driving unit 220 or the source circuit board 230 to the display substrate 100.

[0177] Light scattering components (LSMs) can be disposed between the color conversion substrates 300 of multiple display devices 10. The LSMs can cover the connecting pads 700, adhesive films 800, and flexible films 210 disposed on the sides of each of the multiple display devices 10. Therefore, the LSMs can control the external light reflectivity of the non-display area NDA between the multiple display devices 10.

[0178] The external light reflectivity of the light scattering component LSM can be substantially the same as that of the color conversion substrate 300. The light scattering component LSM can utilize a light scattering material to reflect a portion of the incident external light EXL, and the color conversion substrate 300 can utilize the light scattering materials of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU to reflect a portion of the incident external light EXL. For example, the light scattering component LSM can utilize a scatterer SCT to reflect a portion of the incident external light EXL, and the color conversion substrate 300 can utilize first to third scatterers SCT1, SCT2, and SCT3 to reflect a portion of the incident external light EXL. When the splicing display device TD receives the same amount of external light EXL, the amount of reflected light RL1 from the light scattering component LSM can be substantially the same as the amount of reflected light RL2 from each of the first display device 10-1 and the second display device 10-2. Therefore, the splicing display device TD can prevent the boundary portion or non-display area NDA between multiple display devices 10 from being identified, thereby eliminating the sense of separation between multiple display devices 10 and improving the immersion of the image.

[0179] The reflected light RL2 of the color conversion substrate 300 may include reflected light RL2a comprising multiple transmission regions TA containing light scattering material and reflected light RL2b comprising multiple light-blocking regions BA not containing light scattering material. The multiple transmission regions TA may correspond to the first wavelength conversion unit WLC1, the second wavelength conversion unit WLC2, and the light transmission unit LTU, and the multiple light-blocking regions BA may correspond to multiple light-blocking components BK.

[0180] The external light reflectivity of the light scattering component LSM can be less than the external light reflectivity of the multiple transmission regions TA, and can be greater than the external light reflectivity of the multiple light blocking regions BA. For example, when the light scattering component LSM, the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU all include the same light scattering material, the external light reflectivity of each of the light scattering component LSM, the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU can be proportional to the amount of light scattering material per unit volume. For example, the amount of the third scatterer SCT3 of the light transmission section LTU per unit volume can be greater than the amount of the scatterer SCT of the light scattering component LSM.

[0181] The amount of reflected light RL2 from the color conversion substrate 300 can be equivalent to the sum of the amount of reflected light RL2a from the multiple transmissive regions TA and the amount of reflected light RL2b from the multiple light-blocking regions BA. Furthermore, as the area of ​​the multiple transmissive regions TA in the color conversion substrate 300 increases, the amount of reflected light RL2 from the color conversion substrate 300 can relatively increase, and as the area of ​​the multiple light-blocking regions BA increases, the amount of reflected light RL2 from the color conversion substrate 300 can relatively decrease. When the external light reflectivity of the light scattering component LSM is less than the external light reflectivity of the multiple transmissive regions TA and greater than the external light reflectivity of the multiple light-blocking regions BA, the difference between the external light reflectivity of the light scattering component LSM and the external light reflectivity of the color conversion substrate 300 can be such that the user cannot distinguish the non-display area NDA or boundary portions between the multiple display devices 10. Therefore, the spliced ​​display device TD can prevent the non-display area NDA or boundary portions between the multiple display devices 10 from being identified.

[0182] The external light reflectivity of the light scattering component LSM can be greater than the average of the external light reflectivity of multiple transmission regions TA and multiple light-blocking regions BA. Here, the average of the external light reflectivity of the multiple transmission regions TA and the multiple light-blocking regions BA can reflect the area ratio of the multiple transmission regions TA to the multiple light-blocking regions BA. For example, when the spliced ​​display device TD receives the same amount of external light EXL and the areas of the multiple transmission regions TA and the multiple light-blocking regions BA are the same, the average of the amount of reflected light RL2a from the multiple transmission regions TA and the amount of reflected light RL2b from the multiple light-blocking regions BA can be equivalent to the median value of the amount of reflected light RL2a from the multiple transmission regions TA and the amount of reflected light RL2b from the multiple light-blocking regions BA (RL1 > (RL2a + RL2b) / 2). The difference between the external light reflectivity of the light scattering component LSM and the external light reflectivity of the color conversion substrate 300 can be equivalent to a level where the user cannot distinguish the non-display area NDA or boundary portion between the multiple display devices 10. Therefore, the splicing display device TD can prevent the non-display area NDA or boundary portion between multiple display devices 10 from being identified.

[0183] Figure 9 It is shown Figure 6 Enlarged view of the light scattering component and the first wavelength conversion section.

[0184] Reference Figure 9The thickness T2 of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, or the light transmission section LTU can be greater than the thickness T1 of the light scattering component LSM. The thickness T2 of each of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU can vary slightly depending on the stacked structure of the color conversion substrate 300. However, in the following, it is assumed that the thickness T2 of each of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU is substantially the same as the thickness T1 of the light scattering component LSM.

[0185] The external light reflectivity of multiple transmission regions TA can be greater than that of the light scattering component LSM, and the external light reflectivity of multiple light blocking regions BA can be less than that of the light scattering component LSM. For example, when the light scattering component LSM, the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU all include the same light scattering material, the external light reflectivity of each of the light scattering component LSM, the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU can be proportional to the amount of light scattering material per unit volume.

[0186] Therefore, the thickness T2 of each of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU can be greater than the thickness T1 of the light scattering component LSM, and the amount per unit volume of the third scatterer SCT3 of the light transmission section LTU can be greater than the amount per unit volume of the scatterer SCT of the light scattering component LSM. The splicing display device TD can prevent the non-display area NDA or boundary portion between multiple display devices 10 from being identified.

[0187] Figure 10 This is a diagram illustrating an example of the formation process of a light scattering component in a splicing display device according to an embodiment.

[0188] Reference Figure 10 A splicing display device TD can use adhesive members AM arranged between multiple display devices 10 to attach the sides of adjacent display devices 10 to each other. After the splicing display device TD combines multiple display devices 10 using adhesive members AM, a light scattering member LSM can be formed between the multiple display devices 10 using an inkjet device IJD. The inkjet device IJD can include an inkjet head HD and nozzles NZ.

[0189] The inkjet head HD can be aligned with the position where a light scattering component LSM is formed between multiple display devices 10. The inkjet device IJD can use the nozzle NZ to eject ink InK comprising a base resin BS and a scattering element SCT. The amount of scattering element SCT in the ink InK can be determined based on the amount of the first to third scattering elements SCT1, SCT2, and SCT3 in each of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU. For example, the amount of scattering element SCT in the ink InK can be determined based on the area and thickness of the light scattering component LSM, the area and thickness of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU, and the amount of the first to third scattering elements SCT1, SCT2, and SCT3. The ejected ink InK can cover the connecting pad 700, the adhesive film 800, the flexible film 210, and the adhesive component AM between the multiple display devices 10. The ink coated between multiple display devices 10 is heated and cured, so that the light scattering component LSM can be installed between multiple display devices 10.

[0190] Figure 11 This is a diagram illustrating another example of the formation process of a light scattering component in a splicing display device according to one embodiment.

[0191] Reference Figure 11 A modular display device TD can use adhesive members AM arranged between multiple display devices 10 to attach the sides of adjacent display devices 10 to each other. After the modular display device TD combines multiple display devices 10 using adhesive members AM, a light scattering member LSM can be formed between the multiple display devices 10 using photoresist PR. For example, the photoresist PR may include a base resin BS and a scattering element SCT.

[0192] The amount of scattering particles (SCTs) in the photoresist PR can be determined based on the amounts of the first to third scattering particles (SCT1, SCT2, SCT3) in each of the first wavelength conversion section (WLC1), the second wavelength conversion section (WLC2), and the light transmission section (LTU). For example, the amount of scattering particles (SCTs) in the photoresist PR can be determined based on the area and thickness of the light scattering component (LSM), the area and thickness of the first wavelength conversion section (WLC1), the second wavelength conversion section (WLC2), and the light transmission section (LTU), and the amounts of the first to third scattering particles (SCT1, SCT2, SCT3).

[0193] For example, the photoresist PR can be a negative photoresist. The photoresist PR can be relatively widely distributed, including the locations where light-scattering components LSMs will be placed between multiple display devices 10. If the photoresist PR is distributed between multiple display devices 10, the mask MSK can be arranged in areas other than the areas where light-scattering components LSMs will be placed. For a tiled display device TD, light is irradiated towards the mask MSK and photoresist PR, dissolving areas other than the light-scattering components LSMs, thereby allowing the light-scattering components LSMs to be arranged between multiple display devices 10.

[0194] As another example, the photoresist (PR) can be a positive photoresist. In this case, the light scattering component (LSM) is not limited to... Figure 11 The situation shown can be formed using a method corresponding to positive photoresist.

[0195] Figure 12 This is a figure illustrating yet another example of the formation process of a light scattering component in a splicing display device according to one embodiment.

[0196] Reference Figure 12 A splicing display device TD can use adhesive members AM arranged between multiple display devices 10 to attach the sides of adjacent display devices 10 to each other. After the splicing display device TD combines multiple display devices 10 using adhesive members AM, a light scattering component LSM can be formed between the multiple display devices 10 using film tape FT. For example, the film tape FT can have adhesive strength and can include a base resin BS and a light scattering element SCT.

[0197] The amount of scatterer SCT in the film tape FT can be determined based on the amounts of the first to third scatterers SCT1, SCT2, and SCT3 in each of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU. For example, the amount of scatterer SCT in the film tape FT can be determined based on the area and thickness of the light scattering component LSM, the area and thickness of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light transmission section LTU, and the amounts of the first to third scatterers SCT1, SCT2, and SCT3.

[0198] Figures 13a to 13c This is a diagram illustrating the manufacturing process of a splicing display device according to one embodiment. Figures 13a to 13c The manufacturing process of a splicing display device arranged in chronological order is shown.

[0199] Reference Figure 13aThe splicing display device TD can use adhesive members AM, which are arranged between multiple display devices 10, to attach the sides of adjacent display devices 10 to each other. After the splicing display device TD combines multiple display devices 10 using the adhesive members AM, it can utilize... Figure 10 The inkjet method shown Figure 11 The photoresist method shown or Figure 12 The illustrated film tape method forms a light scattering component LSM between multiple display devices 10. The light scattering component LSM may cover the connecting pad 700, adhesive film 800, flexible film 210 and adhesive component AM arranged on the side of each of the multiple display devices 10.

[0200] Reference Figure 13b After forming light scattering components (LSMs) between multiple display devices 10, the video wall display device TD is equipped with a light control film 20 covering the multiple display devices 10 and the light scattering components (LSMs). For example, the light control film 20 can be a low-reflection film, which can reduce external light reflection of the video wall display device TD. The light control film 20 can be formed as a single unit covering multiple display devices 10 and the light scattering components (LSMs), but it is not necessarily limited to this.

[0201] After forming light scattering components (LSMs) between multiple display devices 10, the splicing display device TD performs printed circuit board (PCB) processing. For example, after forming the light scattering components (LSMs) between multiple display devices 10, the splicing display device TD can equip the lower surface of the display substrate 100 of each of the multiple display devices 10 with a source circuit board 230, multiple cables 240, a control circuit board 250, and a timing control unit 260. The source circuit board 230 can be connected to multiple flexible films 210 or multiple source driving units 220.

[0202] Reference Figure 13c After the light control film 20 and printed circuit board processes are performed, the splicing display device TD can be equipped with a cover module 30 covering the sides and bottom surface of the splicing display device TD. Optionally, the cover module 30 can be equipped on the edge of the front surface of the splicing display device TD, but it is not necessarily limited to this. The cover module 30 can support and protect multiple display devices 10, and can form the appearance of the sides and rear surface of the splicing display device TD.

[0203] Figures 14a to 14c This is a diagram illustrating the manufacturing process of a splicing display device according to another embodiment. Figures 14a to 14c The manufacturing process of a splicing display device arranged in chronological order is shown.

[0204] Reference Figure 14aThe splicing display device TD can use adhesive members AM, which are arranged between multiple display devices 10, to attach the sides of adjacent display devices 10 to each other. After the splicing display device TD combines multiple display devices 10 using the adhesive members AM, it can utilize... Figure 10 The inkjet method shown Figure 11 The photoresist method shown or Figure 12 The illustrated film tape method forms a light scattering component LSM between multiple display devices 10. The light scattering component LSM may cover the connecting pad 700, adhesive film 800, flexible film 210 and adhesive component AM arranged on the side of each of the multiple display devices 10.

[0205] Reference Figure 14b After the splicing display device TD forms light scattering components (LSMs) between multiple display devices 10, a printed circuit board (PCB) process can be performed. For example, after the splicing display device TD forms light scattering components (LSMs) between multiple display devices 10, a source circuit board 230, multiple cables 240, a control circuit board 250, and a timing control unit 260 can be provided on the lower surface of the display substrate 100 of each of the multiple display devices 10. The source circuit board 230 can be connected to multiple flexible films 210 or multiple source driving units 220.

[0206] After the printed circuit board process is performed, the video wall display device TD can be equipped with a cover module 30 that covers the sides and bottom surface of the video wall display device TD. Optionally, the cover module 30 can be provided at the edge of the front surface of the video wall display device TD, but it is not necessarily limited to this. The cover module 30 can support and protect multiple display devices 10, and can form the appearance of the sides and rear surface of the video wall display device TD.

[0207] Reference Figure 14c After the splicing display device TD is equipped with the cover module 30, it can be equipped with a light control film 20 covering multiple display devices 10 and light scattering components LSM. For example, the light control film 20 can be a low-reflection film, which can reduce external light reflection of the splicing display device TD. The light control film 20 can be formed as a single unit covering multiple display devices 10 and light scattering components LSM, but it is not necessarily limited to this.

[0208] Figures 15a to 15c This is a diagram illustrating the manufacturing process of a splicing display device according to yet another embodiment. Figures 15a to 15c The manufacturing process of a splicing display device arranged in chronological order is shown.

[0209] Reference Figure 15aThe splicing display device TD can use adhesive members AM arranged between multiple display devices 10 to attach the sides of adjacent display devices 10 to each other. After the splicing display device TD combines multiple display devices 10 using adhesive members AM, printed circuit board (PCB) processes can be performed. For example, after the splicing display device TD forms light scattering components LSM between multiple display devices 10, the source circuit board 230, multiple cables 240, control circuit board 250, and timing control unit 260 can be provided on the lower surface of the display substrate 100 of each of the multiple display devices 10. The source circuit board 230 can be connected to multiple flexible films 210 or multiple source driving units 220.

[0210] Reference Figure 15b After the printed circuit board process is completed, the TD-type splicing display device can utilize... Figure 10 The inkjet method shown Figure 11 The photoresist method shown or Figure 12 The illustrated film tape method forms a light scattering component LSM between multiple display devices 10. The light scattering component LSM may cover the connecting pad 700, adhesive film 800, flexible film 210 and adhesive component AM arranged on the side of each of the multiple display devices 10.

[0211] After the printed circuit board process is performed, the video wall display device TD can be equipped with a cover module 30 that covers the sides and bottom surface of the video wall display device TD. Optionally, the cover module 30 can be provided at the edge of the front surface of the video wall display device TD, but it is not necessarily limited to this. The cover module 30 can support and protect multiple display devices 10, and can form the appearance of the sides and rear surface of the video wall display device TD.

[0212] Reference Figure 15c After the splicing display device TD is equipped with the cover module 30, it can be equipped with a light control film 20 covering multiple display devices 10 and light scattering components LSM. For example, the light control film 20 can be a low-reflection film, which can reduce external light reflection of the splicing display device TD. The light control film 20 can be formed as a single unit covering multiple display devices 10 and light scattering components LSM, but it is not necessarily limited to this.

[0213] Figure 16a and Figure 16b This is a diagram illustrating the manufacturing process of a splicing display device according to yet another embodiment. Figure 16a and Figure 16b The manufacturing process of a splicing display device arranged in chronological order is shown.

[0214] Reference Figure 16aThe splicing display device TD can use adhesive members AM arranged between multiple display devices 10 to attach the sides of adjacent display devices 10 to each other. After the splicing display device TD combines multiple display devices 10 using adhesive members AM, printed circuit board (PCB) processes can be performed. For example, after the splicing display device TD forms light scattering components LSM between multiple display devices 10, the source circuit board 230, multiple cables 240, control circuit board 250, and timing control unit 260 can be provided on the lower surface of the display substrate 100 of each of the multiple display devices 10. The source circuit board 230 can be connected to multiple flexible films 210 or multiple source driving units 220.

[0215] After the splicing display device TD undergoes the printed circuit board process, it can be equipped with a cover module 30 that covers the sides and bottom surface of the splicing display device TD. Optionally, the cover module 30 can be provided at the edge of the front surface of the splicing display device TD, but it is not necessarily limited to this. The cover module 30 can support and protect multiple display devices 10, and can form the appearance of the sides and rear surface of the splicing display device TD.

[0216] Reference Figure 16b After being equipped with the cover module 30, the splicing display device TD can utilize... Figure 10 The inkjet method shown Figure 11 The photoresist method shown or Figure 12 The illustrated film tape method forms a light scattering component LSM between multiple display devices 10. The light scattering component LSM may cover the connecting pad 700, adhesive film 800, flexible film 210 and adhesive component AM arranged on the side of each of the multiple display devices 10.

[0217] After forming light scattering components (LSMs) between multiple display devices 10, the video wall display device TD can be equipped with a light control film 20 covering the multiple display devices 10 and the light scattering components (LSMs). For example, the light control film 20 can be a low-reflection film, which can reduce external light reflection from the video wall display device TD. The light control film 20 can be formed as a single unit covering the multiple display devices 10 and the light scattering components (LSMs), but it is not necessarily limited to this.

[0218] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, it will be understood by those skilled in the art that the invention can be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as exemplary in all respects, and not limiting.

Claims

1. A splicing display device, comprising: A first display device includes a display substrate and a color conversion substrate. The display substrate has a plurality of light-emitting regions, and the color conversion substrate includes a plurality of transmissive regions arranged corresponding to each of the plurality of light-emitting regions and equipped with light-scattering materials, and a plurality of light-blocking regions arranged between the plurality of transmissive regions. The second display device includes the display substrate and the color conversion substrate, and is disposed on one side of the first display device; and A light-scattering component is disposed between the first display device and the second display device, and is equipped with a light-scattering material. Each of the first display device and the second display device further includes: Connecting pads are disposed on the sides of the display substrate and the color conversion substrate, which are bonded together; and A flexible membrane is disposed on one side of the connecting pad. Wherein, the external light reflectivity of the light scattering component is greater than the average of the external light reflectivity of the plurality of transmission regions and the external light reflectivity of the plurality of light blocking regions. The light scattering component covers the upper surface of at least one of the connecting pad and the flexible membrane.

2. The splicing display device as described in claim 1, wherein, The external light reflectivity of the light scattering component is the same as that of the color conversion substrate.

3. The splicing display device as described in claim 1, wherein, The external light reflectivity of the light scattering component is less than the external light emissivity of the plurality of transmission regions, but greater than the external light reflectivity of the plurality of light blocking regions.

4. The splicing display device as described in claim 1, wherein, The color conversion substrate includes: The basic component includes the plurality of transmissive regions and the plurality of light-blocking regions; Multiple color filters are arranged on the base component; Multiple wavelength conversion units are arranged on the multiple color filters corresponding to a portion of the transmission regions of the multiple transmission regions, and are equipped with the light scattering material; and A light-transmitting section is arranged on the plurality of color filters corresponding to another portion of the transmission region of the plurality of transmission regions, and is equipped with the light-scattering material.

5. The splicing display device as described in claim 4, wherein, The plurality of color filters include: A first color filter selectively allows light of a first color to pass through and overlaps with a first transmission region in the plurality of transmission regions; A second color filter selectively transmits light of a second color and overlaps with a second transmission region within the plurality of transmission regions; and The third color filter selectively transmits light of a third color and overlaps with the third transmission region and the plurality of light-blocking regions in the plurality of transmission regions.

6. The splicing display device as described in claim 5, wherein, The plurality of wavelength conversion units include: A first wavelength conversion unit, disposed on the first color filter, includes a first wavelength transfer agent that converts the peak wavelength of the incident light to a first peak wavelength and the light scattering material; and The second wavelength conversion unit, disposed on the second color filter, includes a second wavelength transfer agent that converts the peak wavelength of the incident light into a second peak wavelength that is different from the first peak wavelength, and the light scattering material.

7. The splicing display device as described in claim 6, wherein, The thickness of the first wavelength conversion section or the second wavelength conversion section is greater than the thickness of the light scattering component.

8. The splicing display device as described in claim 5, wherein, The light-transmitting part is arranged on the third color filter, and the light-transmitting part uses the light-scattering material to maintain the peak wavelength of the incident light so that the incident light is transmitted.

9. The splicing display device as described in claim 4, wherein, The thickness of the light-transmitting part is greater than the thickness of the light-scattering part.

10. The splicing display device as described in claim 4, wherein, The amount of light-scattering material per unit volume of the light-transmitting section is greater than the amount of light-scattering material per unit volume of the light-scattering component.

11. The splicing display device as described in claim 1, wherein, The flexible membrane is adhered to one side of the connecting pad using an adhesive film.

12. The splicing display device as described in claim 11, wherein, The light scattering component also covers the upper surface of the adhesive film.

13. The splicing display device as described in claim 1, further comprising: A light control film covers the first display device, the second display device, and the light scattering component.

14. The splicing display device as described in claim 13, further comprising: A cover module covers the sides and lower surfaces of the first display device and the second display device.

15. A splicing display device, comprising: A first display device includes a display substrate and a color conversion substrate. The display substrate includes a plurality of light-emitting regions, and the color conversion substrate includes a plurality of transmissive regions arranged corresponding to each of the plurality of light-emitting regions and equipped with light-scattering materials, and a plurality of light-blocking regions arranged between the plurality of transmissive regions. The second display device includes the display substrate and the color conversion substrate, and is disposed on one side of the first display device; and A light-scattering component is disposed between the first display device and the second display device, and is equipped with a light-scattering material. Each of the first display device and the second display device further includes: Connecting pads are disposed on the sides of the display substrate and the color conversion substrate, which are bonded together; and A flexible membrane is disposed on one side of the connecting pad. The light reflectivity of the light scattering component is the same as that of the color conversion substrate. The light scattering component covers the upper surface of at least one of the connecting pad and the flexible membrane.

16. The splicing display device as described in claim 15, wherein, The external light reflectivity of the light scattering component is less than the external light emissivity of the plurality of transmission regions, but greater than the external light reflectivity of the plurality of light blocking regions.

17. The splicing display device as described in claim 15, wherein, The color conversion substrate includes: The basic component includes the plurality of transmissive regions and the plurality of light-blocking regions; The first color filter, the second color filter, and the third color filter are arranged on the base component; A first wavelength conversion unit is disposed on the first color filter and includes a first wavelength transfer agent that converts the peak wavelength of the incident light into a first peak wavelength and the light scattering material; A second wavelength conversion section, disposed on the second color filter, includes a second wavelength transfer agent that converts the peak wavelength of the incident light to a second peak wavelength different from the first peak wavelength, and the light scattering material; and A light-transmitting section is arranged on the third color filter, which uses the light-scattering material to maintain the peak wavelength of the incident light so that the incident light can be transmitted.

18. The splicing display device as described in claim 17, wherein, The thickness of the first wavelength conversion section, the second wavelength conversion section, or the light transmission section is greater than the thickness of the light scattering component.

19. The splicing display device as described in claim 17, wherein, The amount of light-scattering material per unit volume of the light-transmitting section is greater than the amount of light-scattering material per unit volume of the light-scattering component.

20. The splicing display device as described in claim 15, wherein, The flexible membrane is adhered to one side of the connecting pad using an adhesive film. The light scattering component also covers the upper surface of the adhesive film.

Images