WO2023123656A1 - 显示装置 - Google Patents
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- WO2023123656A1 WO2023123656A1 PCT/CN2022/079107 CN2022079107W WO2023123656A1 WO 2023123656 A1 WO2023123656 A1 WO 2023123656A1 CN 2022079107 W CN2022079107 W CN 2022079107W WO 2023123656 A1 WO2023123656 A1 WO 2023123656A1
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- Prior art keywords
- light
- emitting
- display device
- emitting units
- panel
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- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
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- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
Definitions
- At least one embodiment of the present disclosure relates to a display device.
- Display systems have higher and higher performance requirements for pixel density (PPI), resolution, and high dynamic rendering (HDR).
- LCDs want to maintain a competitive advantage, and the size of light-emitting diodes (LEDs) used as backlight sources is getting smaller and smaller. , which can help improve related display performance.
- LEDs light-emitting diodes
- Mini LED or Micro LED can be used as backlight.
- Mini LED or Micro LED is used as a backlight and combined with a traditional liquid crystal display panel, by controlling the brightness of Mini LED or Micro LED to match the gray scale presented by the display panel, the liquid crystal display device can be compared with the organic light-emitting diode display. The device is quite high contrast.
- At least one embodiment of the present disclosure provides a display device.
- At least one embodiment of the present disclosure provides a display device, including: a display panel and a light emitting panel.
- the luminescent plate is located on the non-display side of the display panel, and is stacked with the display panel.
- the light-emitting panel includes a base substrate and a plurality of light-emitting units arranged on the base substrate, and the maximum dimension of at least one light-emitting unit in a direction parallel to the base substrate is not greater than 3 millimeters; the plurality of The center lines of the four adjacent light-emitting units in the light-emitting units form a quadrangle, and any two light-emitting units in the four light-emitting units are arranged adjacent to each other, forming the center connection of the two farthest light-emitting units in the quadrilateral.
- the line passes through two first points on the edges of the two light-emitting units that are close to each other, the distance between the two first points is the first distance D1, and the most edge light of the light emitted by the light-emitting units is the same as
- the included angle between the planes parallel to the base substrate is ⁇ , and the minimum distance between the display panel and the surfaces of the base substrate close to each other is not less than D1*tan ⁇ /2.
- the quadrilateral includes a parallelogram.
- At least some of the light-emitting units in the plurality of light-emitting units are arranged in an array along a first direction and a second direction, the first direction intersects the second direction;
- Two adjacent light-emitting units arranged in one direction and the center line of two adjacent light-emitting units respectively adjacent to the two adjacent light-emitting units in the second direction form the quadrilateral, and the sides of the quadrilateral and the
- the included angle range of the first direction or the second direction is between -20° and 20°.
- the display device further includes: a light diffusion structure located between the light-emitting plate and the display panel, the thickness of the light diffusion structure in a direction perpendicular to the base substrate is less than D1*tan ⁇ /2.
- the light diffusion structure is spaced from the luminescent plate, the sectional line of the light emitting unit cut by the extension line of the two first points is L, and the light diffusion structure faces the luminescent plate
- the distance between one side surface and the surface of the light-emitting unit facing the base substrate is a second distance D2, and the second distance D2 satisfies: D1*tan ⁇ /2 ⁇ D2 ⁇ [(3*D1+2L) *tan ⁇ ]/2.
- the display device further includes: a light diffusion structure located between the light-emitting plate and the display panel, the light-diffusion structure is in direct contact with at least part of the light-emitting units, and the light-emitting units are vertically
- the thickness in the direction of the base substrate is H1
- the thickness H2 of the light diffusion structure satisfies: D1*tan ⁇ /2 ⁇ H1 ⁇ H2 ⁇ 5mm.
- the light emitting unit includes an unpackaged light emitting diode chip, and the largest dimension of the unpackaged light emitting diode chip in a direction parallel to the base substrate is not greater than 500 micrometers.
- a protective layer is provided on a side of the plurality of light emitting units facing the display panel.
- the light emitting unit includes a light emitting diode chip and a packaging structure configured to package the light emitting diode chip, and spaces are provided between the packaging structures of adjacent light emitting units.
- the light-emitting panel includes a first area and a second area located on the edge of the first area, the light-emitting units located in the first area are arranged in an array, and the second area In the zone, the line connecting the centers of one light-emitting unit and any light-emitting unit adjacent to it passes through two second points on the edges of the two light-emitting units that are close to each other, and the distance between the two second points is less than the first distance.
- a ratio of the distance between the two second points to the first distance is 0.6 ⁇ 0.9.
- the light-emitting panel includes a plurality of light-emitting unit rows, each light-emitting unit row includes at least two light-emitting units arranged along the first direction, and the plurality of light-emitting unit rows are aligned with The first direction is arranged in a vertical direction, and the first distance between the two light-emitting units in the row of light-emitting units located on the outermost edge and the row of light-emitting units next to it is smaller than that in the other two adjacent rows of light-emitting units The first distance between the two light-emitting units; or, the light-emitting panel includes a plurality of light-emitting unit columns, and each light-emitting unit column includes at least two light-emitting units arranged along the second direction, The plurality of light-emitting unit columns are arranged along a direction perpendicular to the second direction, and the first distance between the two light-emitting units in the light-emitting
- the distance between the center line of any two adjacent light-emitting units passing through the two points on the edges of the any two light-emitting units that are close to each other is not less than the distance between the most edge of the light-emitting panel.
- the minimum distance between the light-emitting unit and the edge of the light-emitting panel is not less than the distance between the most edge of the light-emitting panel.
- a plurality of support parts are provided between the light-emitting plate and the light diffusion structure, and the connection lines of the plurality of support parts at least form a first multi-layer structure parallel to the base substrate.
- a polygon and a second polygon surrounds the first polygon
- the first polygon includes a plurality of first diagonal lines
- the second polygon includes a plurality of second diagonal lines
- at least two first diagonal lines of the plurality of first diagonal lines pass through the geometric center of the luminous panel
- at least two of the plurality of second diagonal lines A second diagonal line passes through the geometric center of the luminous panel.
- the thickness of the support portion in a direction perpendicular to the base substrate is smaller than the second distance.
- the value range of ⁇ is between 20°-30°, and the value of D1/L is 3-10.
- the value range of ⁇ is between 10°-25°, and the value of D1/L is 5-11.
- the light diffusion structure includes a plurality of film layers, the area of one of the plurality of film layers is S0, the area of the first polygon is S1, and S0 and S1 satisfy: S0/S1 ⁇ 16.
- the light diffusion structure includes a plurality of film layers, the area of one of the plurality of film layers is S0, the area of the second polygon is S2, and S0 and S2 satisfy: S0/S2 ⁇ 2.
- the planar shape of the display panel parallel to the base substrate is a quadrangle
- the planar shape of the display panel includes two long sides and two short sides, and the long The sides are alternately connected to the short sides;
- the angle between the longest first diagonal among the first diagonals passing through the geometric center of the luminous panel and a straight line parallel to the long side is a first included angle
- the first included angle is the smallest one among multiple included angles between the first diagonal line passing through the geometric center of the luminous panel and the straight line.
- the included angle between the first diagonal line with the shortest length and the straight line among the first diagonal lines passing through the geometric center of the light-emitting panel is the second included angle
- the second included angle is the largest of multiple included angles between the first diagonal line passing through the geometric center of the luminous panel and the straight line.
- the light-emitting board includes a plurality of sub-light-emitting boards, and each sub-light-emitting board is provided with at least one supporting portion.
- At least two support parts with the same distance from the geometric center and the smallest distance are respectively located on different sub-light emitting boards, and the at least two support parts constitute the first multiple At least one vertex of the polygon.
- At least one support portion provided on each sub-light emitting board constitutes a vertex of the second polygon.
- a side of each sub-light-emitting board facing the light diffusion structure is provided with a plurality of reserved positions, and at least one of the reserved positions on each sub-light-emitting board is provided with the support portion.
- the reserved position includes a through hole penetrating through the base substrate.
- a reflective film is provided between the base substrate and the light diffusion structure, and the reflective film includes a plurality of first openings configured to expose the at least some of the reserved bits.
- the reflective film further includes a plurality of second openings configured to expose at least part of the plurality of light emitting units.
- the plurality of reserved bits on different sub-light emitting boards have the same number and the same relative positional relationship.
- the reflective film includes two sub-reflective films, and a gap is provided between the two sub-reflective films, and the gap is covered by a reflective strip.
- the reflective film includes two sub-reflective films, and the two sub-reflective films are partially overlapped.
- At least some of the light-emitting units in the plurality of light-emitting units are arranged in an array along a first direction and a second direction, and the first direction intersects the second direction; the plurality of light-emitting units
- the luminescent panels are arranged in an array along the first direction and the second direction, and at least some structures on the plurality of sub-luminescent panels are symmetrically distributed relative to the geometric center.
- the at least part of the structure includes the support portion and a driving circuit.
- At least two adjacent light emitting units form a light emitting unit group, and the support portion is located between the adjacent light emitting unit groups.
- the encapsulation structure is doped with a color converting material.
- the display device further includes: a color conversion layer located between the light diffusion structure and the display panel.
- FIG. 1 is a schematic diagram of a partial cross-sectional structure of a display device
- FIG. 2 is a schematic diagram of a partial cross-sectional structure of a display device provided according to an embodiment of the present disclosure
- Figure 3A is a schematic diagram of the equivalent luminescence of a Lambertian luminous body
- Fig. 3B is a schematic diagram of the Lambertian illuminant's light exit angle and light intensity distribution
- FIG. 4A is a partial schematic diagram of a device including the display device shown in FIG. 2;
- 4B and 4C include schematic diagrams of light emitting units in different examples
- FIG. 5A is a schematic diagram of a partial planar structure of a light-emitting panel in the display device shown in FIG. 4A;
- Fig. 5B is a schematic diagram of a partial planar structure of a light-emitting panel provided according to another example of an embodiment of the present disclosure.
- Fig. 5C is a schematic diagram of a partial planar structure of a light-emitting panel provided according to another example of an embodiment of the present disclosure.
- FIG. 6 is a schematic partial cross-sectional structural diagram of a display device provided according to an example in an embodiment of the present disclosure
- Fig. 7 is a partial cross-sectional structural schematic diagram of a display device provided according to an example in an embodiment of the present disclosure.
- Fig. 8 is a schematic diagram of a partial planar structure of a light-emitting panel provided according to an example of an embodiment of the present disclosure
- Fig. 9 is a schematic diagram of a partial planar structure of a light-emitting panel provided according to another example of an embodiment of the present disclosure.
- Fig. 10A is a schematic plan view of a light-emitting panel provided according to another example of an embodiment of the present disclosure.
- FIG. 10B is a schematic diagram of the side of the sub-light-emitting panel shown in FIG. 10A without a light-emitting unit;
- FIG. 11 is a schematic diagram of a display device comprising a light-emitting panel shown in FIG. 6 and FIG. 10A;
- Fig. 12 is a schematic diagram of a partial cross-sectional structure of a display device provided according to an example of an embodiment of the present disclosure
- FIG. 13A is a schematic plan view of the reflective film in the display device shown in FIG. 12;
- 13B is a schematic diagram of a reflective film in another example of an embodiment of the present disclosure.
- Fig. 14A is a structural diagram of a support part according to some embodiments of the present disclosure.
- Fig. 14B is a structural diagram of another support part according to some embodiments of the present disclosure.
- Fig. 14C is a structural diagram of another support part according to some embodiments of the present disclosure.
- Fig. 14D is a structural diagram of another support part according to some embodiments of the present disclosure.
- Fig. 15A is a structural diagram of another support part according to some embodiments of the present disclosure.
- Fig. 15B is a structural diagram of another support part according to some embodiments of the present disclosure.
- FIG. 16 is a schematic diagram of at least part of the structure of the light emitting board and the side of the light emitting board facing the display panel in the display device shown in FIG. 4A or FIG. 6 .
- FIG. 1 is a schematic diagram of a partial cross-sectional structure of a display device.
- the display device includes a display panel 10 , an optical film 30 , a light emitting panel 20 , a back frame 43 , an outer frame 42 , a plastic frame 45 and a rear case 44 .
- the non-display side of the display panel 10 is disposed on the rubber frame 45 through transparent glue or a rubber pad 47 , and a foam 41 is disposed between the side wall of the display panel 10 and the outer frame 42 .
- the light emitting board 20 and the optical film 30 are arranged on the non-display side of the display panel 10 , the optical film 30 is located between the light emitting board 20 and the display panel 10 , and the optical film 30 is configured to modulate the direction of the light emitted by the light emitting board 20 .
- the optical film 30 is disposed on the plastic frame 45 , and a light guide strip 46 is disposed between the optical film 30 and the plastic frame 45 , and transparent glue 041 is disposed on both sides of the light guide strip 46 .
- the light emitting board 20 includes a substrate 22 and a light emitting unit 21 disposed on a side of the substrate 22 facing the optical film 30 .
- the light emitting board 20 is configured to provide backlight for the display panel 10 .
- the side of the substrate 22 facing the display panel 10 is provided with a reflective sheet 23 , and the reflective sheet 23 is provided with an opening to expose the light emitting unit 21 .
- the distance between the optical film 30 and the substrate 22 may be 3 millimeters.
- the substrate 22 may include structures such as driving circuits and wires.
- the luminous panel 20 is arranged on the back frame 43 , and the back frame 43 is fixedly connected with the plastic frame 45 and the outer frame 42 .
- a rear shell 44 is provided on a side of the back frame 43 away from the light-emitting panel 20 .
- the light-emitting unit 21 above can be a bracket-type light-emitting diode.
- the maximum dimension of the light-emitting unit 21 in the direction parallel to the base substrate 210 is approximately 10 mm to 20 mm.
- the light-emitting unit 21 in the direction perpendicular to the base substrate 210 The largest size is roughly 3-7 mm.
- the two luminous units should avoid the state of appearing as two independent light sources, that is, the appearance of lamp shadows (Hotspot) should be avoided Phenomenon.
- the inventor found through experiments that, for the same luminous panel, a diffuser plate with a thickness of 3 mm is directly arranged on the light-emitting side of the luminous unit, and there is basically no lamp shadow phenomenon, while at a position 1 mm away from the surface of the luminous unit of the luminous panel , when setting a diffuser plate with a thickness of 2 mm, there will be a slight light shadow phenomenon.
- An embodiment of the present disclosure provides a display device.
- the display device includes a display panel and a light emitting panel.
- the luminous plate is located on the non-display side of the display panel, and is stacked with the display panel.
- the luminescent panel includes a base substrate and a plurality of luminescent units arranged on the base substrate, the maximum dimension of at least one luminescent unit in the direction parallel to the base substrate is not greater than 3 mm; the four adjacent luminescent units among the plurality of luminescent units
- the central line of the unit forms a quadrangle, and any two of the four light-emitting units are adjacent to each other, and the central line of the two light-emitting units that form a quadrangle and are farthest away passes through the edges of the two light-emitting units that are close to each other
- the distance between the two first points is the first distance D1
- the angle between the light emitted by the light emitting unit and the plane parallel to the substrate is ⁇ , which shows The
- FIG. 2 is a schematic diagram of a partial cross-sectional structure of a display device provided according to an embodiment of the present disclosure.
- FIG. 3A is a schematic diagram of equivalent luminescence of a Lambertian luminous body.
- FIG. 2 is a partial schematic view of the display device, and
- FIG. 5A is a partial plan view of the light emitting panel in the display device shown in FIG. 4A .
- the cross-sectional view shown in FIG. 4A may be a cross-sectional view taken along line AA' shown in FIG. 5A.
- the display device includes a display panel 100 and a light emitting panel 200 that are stacked.
- the luminescent panel 200 is located on the non-display side of the display panel 100 , for example, the luminescent panel 200 can be used as a backlight and configured to provide backlight to the display panel 100 .
- the light-emitting panel 200 includes a base substrate 210 and a plurality of light-emitting units 220 arranged on the base substrate 210 , at least one light-emitting unit 220 is in a direction parallel to the base substrate 210
- the largest dimension is not more than 3mm.
- the outline shape of the orthographic projection of the light emitting unit 220 on the base substrate 210 may be a rectangle, and the maximum dimension of the light emitting unit 220 in a direction parallel to the base substrate 210 may be the diagonal of the light emitting unit 220 .
- the outline of the orthographic projection of the light emitting unit 220 on the base substrate 210 may be a circle, and the maximum dimension of the light emitting unit 220 in a direction parallel to the base substrate 210 may be the diameter of the light emitting unit 220 .
- the contour shape of the orthographic projection of the light emitting unit 220 on the base substrate 210 may be an ellipse, and the maximum dimension of the light emitting unit 220 in a direction parallel to the base substrate 210 may be the long axis of the light emitting unit 220 .
- the side length of the planar shape of the light emitting unit is not greater than 3 mm.
- the light emitting unit 220 is located on a side of the base substrate 210 facing the display panel 100 .
- the maximum dimension of each light emitting unit 220 in a direction parallel to the base substrate 210 is not greater than 3 mm.
- the largest dimension of the light emitting unit 220 in a direction parallel to the base substrate 210 is not greater than 500 microns.
- the largest dimension of the light emitting unit 220 in a direction parallel to the base substrate 210 is not greater than 300 microns.
- the light-emitting unit in the light-emitting panel provided by the embodiment of the present disclosure may include a submillimeter light-emitting diode (miniLED), and the maximum dimension of the miniLED in a direction parallel to the base substrate 210 is not greater than 500 microns, such as not greater than 300 microns, or not greater than 250 microns, or not greater than 220 microns.
- the maximum dimension of each light emitting unit 220 in a direction perpendicular to the base substrate 210 is not greater than 2 mm, for example, 1 mm, 0.75 mm, 0.6 mm, 0.15 mm, or 0.1 mm.
- the central connection lines of four adjacent light-emitting units 220 among the plurality of light-emitting units 220 form a quadrangle, and any two light-emitting units 220 in the four light-emitting units 220 are adjacently arranged to form a
- the line connecting the centers of the two light-emitting units 220 that are quadrilateral and farthest away passes through two first points 001 on the edges of the two light-emitting units that are close to each other, and the distance between the two first points 001 is the first distance D1
- the angle between the most peripheral light rays emitted by the light emitting unit 220 and the plane parallel to the base substrate 210 is ⁇
- the minimum distance between the display panel 100 and the surfaces of the base substrate 210 that are close to each other is not less than D1*tan ⁇ /2.
- the display device provided by the embodiments of the present disclosure can achieve a better high dynamic rendering (HDR) effect while having a thinner
- the above-mentioned “connecting the centers of the four light emitting units 220 ” may refer to a line connecting the geometric centers of the orthographic projections of the four light emitting units 220 on the base substrate 210 .
- the above “first point” is a point on the edge of the orthographic projection of the light emitting unit 220 on the base substrate 210 .
- the aforementioned “four light-emitting units 220 adjacent to each other” may mean that the four light-emitting units 220 are adjacent to each other, and no other light-emitting units 220 are arranged between any two light-emitting units 220 .
- the above “quadrilateral” is a convex quadrilateral.
- the aforementioned quadrilaterals include parallelograms.
- the first direction may be the X direction
- the second direction may be the Y direction, but not limited thereto, and the first direction and the second direction may be interchanged.
- the first direction and the second direction may or may not be perpendicular.
- the light emitting board 200 may include multiple regions, and the light emitting units 220 in at least one region are arranged in an array along the first direction and the second direction.
- the first direction may be a row direction and the second direction may be a column direction, or the first direction may be a column direction and the second direction may be a row direction.
- the plurality of light emitting units 220 arranged along the first direction may be arranged at equal intervals; the plurality of light emitting units 220 arranged along the second direction may be arranged at equal intervals.
- the light emitting units 220 arranged along the first direction may be strictly arranged along the first direction, that is, the sequential lines connecting the geometric centers of adjacent light emitting units 220 are parallel to the first direction.
- the light emitting units 220 arranged along the second direction may be strictly arranged along the second direction, that is, the line connecting the geometric centers of the light emitting units 220 is parallel to the second direction.
- the two adjacent light-emitting units 220 arranged along the first direction and the center lines of the two adjacent light-emitting units 220 respectively adjacent to the two adjacent light-emitting units 220 in the second direction form the above-mentioned quadrilateral, and the quadrilateral
- the range of the included angle between the side and the first direction or the second direction is between -20° and 20°. That is, the magnitude of the included angle between any side of the quadrilateral and the first direction or the second direction does not exceed 15°, such as 14°, 13°, 10°, 5°, 0°, etc.
- the sides of the quadrilateral are parallel to the first direction or the second direction.
- FIG. 5C is a schematic diagram of a partial planar structure of a light emitting panel provided according to another example of an embodiment of the present disclosure.
- the light-emitting units 220 arranged along the first direction can be arranged approximately along the first direction, that is, the light-emitting units 220 are arranged approximately along the first direction, and these light-emitting units
- the sequential connecting line of the geometric center of the unit 220 may not be a straight line parallel to the first direction, but a zigzag first broken line BL1, and the angle between any line segment in the first broken line BL1 and the first direction does not exceed 20° , such as 10°-18°.
- the angle between any part of the first fold line BL1 and the first direction is no more than 15°, such as 12°-14°, such as 12.5° or 13°.
- the geometric centers of two adjacent light emitting units 220 are respectively located on different sides of the reference line RLx, and each of the plurality of light emitting units 220 arranged approximately along the first direction light emitting units, the shortest linear distances from the reference line RLx may be approximately the same, wherein the reference line RLx is parallel to the first direction.
- the light emitting units 220 arranged along the second direction can be arranged approximately along the second direction, that is, the light emitting units 220 are arranged approximately along the second direction, and these light emitting units
- the sequential connection line of the geometric center of the unit 220 is not a straight line parallel to the second direction, but a zigzag second broken line BL2, and the angle between any line segment in the second broken line BL2 and the second direction does not exceed 20° , such as 10°-18°.
- the angle between any part of the second fold line BL2 and the second direction does not exceed 15°, such as 12°-14°, 12.5° or 13°.
- the geometric centers of two adjacent light emitting units 220 are respectively located on different sides of the reference line RLy, and, among the plurality of light emitting units 220 arranged approximately along the second direction
- the shortest linear distances of each light emitting unit from the reference line RLy may be approximately the same, wherein the reference line RLy is parallel to the second direction.
- the centers of the two adjacent light emitting units 220 arranged along the first direction and the two adjacent light emitting units 220 respectively adjacent to the two adjacent light emitting units 220 in the second direction The connecting lines form the above-mentioned quadrilateral, and the sides of the quadrilateral are parallel to the first direction or the second direction.
- a quadrilateral two sides are parallel to a first direction and the other two sides are parallel to a second direction.
- the line connecting the centers of two adjacent light emitting units 220 arranged along the first direction is a side of a quadrilateral.
- the aforementioned quadrilateral may be a rectangle or a parallelogram.
- the center of the light emitting unit may be the geometric center of the light emitting unit.
- the aforementioned two adjacent light emitting units 220 arranged along the first direction may mean that no other light emitting units 220 are arranged between the two light emitting units 220 arranged along the first direction.
- the aforementioned two adjacent light emitting units 220 arranged in the second direction may mean that no other light emitting units 220 are arranged between the two light emitting units 220 arranged in the second direction.
- the distance between two first points 001 on the edges close to each other of the two farthest light-emitting units 220 constituting a quadrangle is the first distance D1 .
- the distance between two first points 001 on the opposite edges of the two light emitting units 220 that form a quadrangle and are farthest away from each other is the first distance D1.
- the two light emitting units 220 that form a quadrangle and are farthest away may be the two light emitting units 220 located at two endpoints of a diagonal line of the quadrangle.
- the first distance D1 between the two farthest light emitting units 220 constituting a quadrangle is smaller than the length of a diagonal of the quadrangle.
- the two light emitting units 220 that form a quadrangle and are farthest away are arranged along the V direction, and the V direction intersects both the X direction and the Y direction.
- the line connecting the geometric centers of the two light-emitting units 220 that form a quadrangle and are farthest away extends along the V direction; It also extends along the V direction, or has an included angle with the V direction within ⁇ 5°.
- the dimension of the light emitting unit 220 along the first direction is w
- the dimension of the light emitting unit 220 along the second direction is l
- the distance may be a
- the distance between the centers of two adjacent light emitting units 220 arranged in the second direction may be b; wherein, a and b satisfy a ⁇ b.
- the above w and l satisfy w ⁇ l, then the length P of the diagonal of the quadrilateral is (a 2 +b 2 ) 1/2 .
- the dimension of the section line cut by the light emitting unit 220 by the extension of the line connecting the two first points 001 is L.
- the above-mentioned "the section line of the light emitting unit 220 cut by the extension line of the connection line of the two first points 001" may refer to the normal line between the extension line of the connection line of the two first points 001 and the light emitting unit 220 on the base substrate 210. Project a line connecting two points that intersect.
- L w/cos[arctan(b/a)].
- the first distance D1 P-L.
- the contour shape of the above-mentioned light-emitting unit 220 in the orthographic projection of the base substrate 210 is a circle
- the cross-sectional dimension L of the light-emitting unit 220 cut by the extension line of the line connecting the two first points 001 which is equal to the diameter of the circle.
- the angle between the light rays emitted by the light emitting unit 220 and the plane parallel to the base substrate 210 is ⁇ , and the display panel 100 and the base substrate 210 are close to each other.
- the minimum distance D0 between the surfaces is not less than (D1*tan ⁇ )/2.
- FIG. 4A schematically shows that the light rays emitted by the light emitting unit 220 are emitted from the position where the light emitting unit 220 contacts the base substrate 210. In actual products, the light rays emitted by the light emitting unit 220 can be emitted from the light emitting unit. 220 with a smaller distance from the base substrate 210 .
- the light emitting unit 220 includes an unpackaged LED chip 225 , and the largest dimension of the unpackaged LED chip 225 in a direction parallel to the base substrate 210 is not greater than 500 ⁇ m.
- the light-emitting unit 220 is an unpackaged light-emitting diode chip 225, wherein the light-emitting diode chip 225 is a submillimeter inorganic light-emitting diode (miniLED), and the thickness of the unpackaged light-emitting diode chip 225 can be 70 microns to 180 microns.
- the largest dimension of the packaged LED chip 225 in a direction parallel to the base substrate 210 is not greater than 500 microns.
- the unpackaged light-emitting diode chip 225 can be equivalent to a Lambertian body illuminant, since the light emitted by the unpackaged light-emitting diode chip 225 and the angle with the normal line n is greater than ⁇ 1/2 , its light intensity It is relatively small and is not within the scope of the present disclosure. Therefore, in the embodiment of the present disclosure, the outgoing light of the unpackaged light-emitting diode chip 225 and the normal line n at an angle of ⁇ 1/2 is defined as the unpackaged light-emitting diode chip 225 , that is, the most marginal ray of the light emitting unit 220 .
- a protection layer 223 is provided on a side of the plurality of light emitting units 220 facing the display panel 100 .
- the protective layer 223 can be used to protect the plurality of light-emitting diode chips 225 on the light-emitting board 200. Unified protection.
- a plurality of LED chips 225 can share the same protection layer 223 .
- the protective layer 223 can be made of transparent material, such as transparent silica gel.
- the surface of the protection layer 223 away from the base substrate 210 may be an almost flat surface, so as to improve the yield of the display device.
- the refractive index of the protective layer 223 can be between the refractive index of the LED chip 225 and that of the material (such as air) adjacent to the protective layer 223. between the refractive indices.
- the protective layer 223 may have a refractive index between 1.2 and 1.6.
- the protective layer 223 may have a refractive index between 1.3 and 1.4.
- the protective layer 223 has a refractive index smaller than 1.4.
- the protective layer 223 may have a refractive index less than 1.5.
- the protective layer 223 may have a refractive index greater than 1.1.
- the protective layer 223 may have a refractive index greater than 1.2.
- the protective layer 223 may have a refractive index greater than 1.3.
- the protective layer 223 may have a refractive index of about 1.35.
- the protective layer 223 can cover all unpackaged LED chips 225 on the light emitting board 200 , and the protective layer 223 can have a flat or slightly concave-convex upper surface.
- the thickness of the protection layer 223 is slightly greater than that of the unpackaged LED chips 225 .
- the light emitting unit 220 includes a light emitting diode chip 225 and a packaging structure 224 configured to package the light emitting diode chip 225 , and spaces are provided between the packaging structures 224 of adjacent light emitting units 220 .
- the light-emitting unit 220 includes a packaged light-emitting diode chip, wherein the light-emitting diode chip 225 is a submillimeter light-emitting diode chip (miniLED), and the unpackaged light-emitting diode chip 225 is placed perpendicular to the base substrate 210.
- the dimension in the direction may be 70 microns to 180 microns, and the maximum dimension of the unpackaged LED chip 225 in the direction parallel to the base substrate 210 is not greater than 500 microns.
- the packaged LED chip is the light emitting unit 220, and the maximum size and thickness of the packaged LED chip in the direction parallel to the base substrate 210 are compared with those of unpackaged LED chips.
- the corresponding parameters of 225 become larger, for example, the maximum dimension of the light emitting unit 220 in the direction parallel to the base substrate 210 is not greater than 3 mm, 1.5 mm, 1 mm, 0.5 mm, etc.
- the maximum dimension of each light emitting unit 220 in a direction perpendicular to the base substrate 210 is not greater than 2 mm, for example, 1 mm, 0.75 mm, 0.6 mm, 0.15 mm, or 0.1 mm.
- a single light-emitting diode chip 225 can be packaged as an independent device to form a light-emitting unit 220 , and then placed on a corresponding position on the light-emitting board 200 and fixedly connected to the light-emitting board 200 .
- the unpackaged light-emitting diode chip can be considered as a Lambertian luminous body, when the light-emitting diode chip is packaged, the light in the light angle range of + ⁇ 1/2 to - ⁇ 1/2 can be emitted, and + ⁇ 1 Light rays beyond /2 to - ⁇ 1/2 are basically limited in the independent device due to total reflection.
- the angle ⁇ between the most edge light rays emitted by the light-emitting unit and the substrate substrate is ⁇ 1 Complementary angle of /2 .
- the light emitting diode chip 225 may also be placed on the corresponding position on the light emitting board 200 first, and then packaged.
- each light-emitting diode chip can be packaged with a transparent material, such as transparent silica gel, by screen printing or dot printing to form a package structure 224.
- the light-emitting diode can be The light emitting angle of the chip is modulated, so that the light emitting angle of the light emitting unit changes.
- the surface of the packaging structure far away from the base substrate is a curved surface, and the exit angle of the most edge light in the light emitted by the light-emitting unit is slightly larger than ⁇ 1/2 of the light-emitting diode chip. If the value of ⁇ 1/2 is in the range of 40° ⁇ 65°, the value range of the light emitting angle of the most edge light among the light emitted by the light emitting unit can be 50° ⁇ 70°.
- encapsulation structure 224 may have any desired dimension in a direction perpendicular to base substrate 210, for example, less than 0.5 millimeters, between 0.1 and 0.4 millimeters, between 0.2 and 0.4 millimeters, and less than 0.3 millimeters, at Between 0.25mm and 0.35mm, between 0.15mm and 0.25mm, about 0.2mm, about 0.3mm, etc., the maximum dimension of the package structure 224 in a direction parallel to the base substrate 210 can be, for example, between 0.3mm and 2.5mm Between 0.3 and 0.7 mm, between 0.8 and 0.9 mm, greater than 0.5 mm, greater than 1.0 mm, greater than 2.0 mm, less than 2.0 mm, etc.
- the ratio of the maximum dimension of the package structure 224 in the direction parallel to the base substrate 210 to the dimension perpendicular to the base substrate 210 may be greater than, greater than 3, or between 4 and 6, or less than 10, etc.
- the geometric center of the orthographic projection of the light-emitting diode chip on the substrate may coincide with the geometric center of the orthographic projection of the independent device on the substrate, but it is not limited thereto.
- the geometric center of the projection may also be offset relative to the geometric center of the independent device on the base substrate; the thickness H1 of the light emitting unit 220 in the direction perpendicular to the base substrate 210 is the thickness H1 of the packaged light emitting diode chip thickness.
- the light emitting unit 220 or the light emitting diode chip 225 is connected to the pad 222 on the base substrate 210 through the solder metal 221 .
- the solder metal 221 may include solder.
- color conversion material 226 may include phosphor material or quantum dot material.
- color converting material 226 may include converting blue light to white light.
- color converting material 226 may include converting blue light to red and green light.
- the display panel 100 is a liquid crystal display panel.
- the liquid crystal display panel may include an array substrate (not shown), an opposite substrate (not shown), and a liquid crystal layer (not shown) between the array substrate and the opposite substrate.
- the side of the array substrate facing the opposite substrate may include a plurality of gate lines extending in one direction and a plurality of data lines extending in another direction, and the plurality of gate lines and the plurality of data lines are intersected to define an array arrangement
- a plurality of pixel units can be arranged as a pixel array.
- Each pixel unit may include a pixel electrode and a thin film transistor, the gate line is connected to the gate of the thin film transistor to control the opening or closing of the thin film transistor, the pixel electrode is connected to one of the source and drain electrodes of the thin film transistor, and the data line is connected to the source of the thin film transistor. The other of the drains is connected, and the data line inputs the voltage signal required for displaying the picture to the pixel electrode through the thin film transistor to realize the display of the array substrate.
- the opposing substrate may be a color filter substrate
- the side of the color filter substrate facing the array substrate may be provided with a color filter layer corresponding to pixel units and a black matrix covering structures such as gate lines and data lines located in the non-display area.
- the side of the color filter substrate facing the array substrate may also be provided with a common electrode opposite to the pixel electrode, and the common electrode is configured to apply a common voltage to generate an electric field for driving liquid crystal molecules in the liquid crystal layer to deflect with the pixel electrode.
- the liquid crystal molecules are deflected to change the transmittance of the liquid crystal layer, so as to realize the display of desired grayscale images.
- the display panel 100 may further include a first polarizer disposed on a side of the array substrate away from the opposite substrate and a second polarizer disposed on a side of the opposite substrate away from the array substrate.
- the first polarizer includes a light transmission axis extending along the DI1 direction and polarizes the backlight incident therein along the DI1 direction.
- the second polarizer includes a light transmission axis extending along the DI2 direction and polarizes light incident on the second polarizer along the DI2 direction.
- the light transmission axis of the first polarizer and the light transmission axis of the second polarizer are perpendicular to each other.
- the four light-emitting units 220 forming the quadrangle can be electrically connected, for example, can be connected in series or in parallel, or connected in parallel after being connected in series. But not limited thereto, some light emitting units 220 among the four light emitting units 220 constituting the quadrangle may not be electrically connected, which is not limited in the embodiments of the present disclosure.
- the display device further includes a color conversion layer located between the light diffusion structure 300 and the display panel 100 .
- a display device may be provided with one of a color conversion layer and a color conversion material.
- the light-emitting unit 220 with a single light emitting color can be combined with the color conversion layer 034 (shown in FIG. 16 ) to realize white light emission, and combined with a passive display panel, can realize full-color display.
- the color conversion layer may include a phosphor layer (eg, a yellow phosphor material or other photoluminescent material layer), which can convert the incident blue light into light of other colors.
- the light emitting unit 220 may emit light of any suitable color, for example, the light emitting unit 220 may emit light of a single color, such as blue, red, green, and the like.
- the base substrate 210 may be a printed circuit board (PCB board) or glass, plastic, polyimide, polymethyl methacrylate, etc. with circuits.
- the control circuit controls the light-emitting unit 220 through the lines on the light-emitting panel 200, thereby implementing a local dimming scheme that helps improve the dynamic range of images displayed on the pixel array.
- each light-emitting unit 220 may include a p-electrode, a p-type semiconductor layer, an n-electrode, an n-type semiconductor layer, and a light-emitting layer, and holes and electrons are respectively injected into the n-type semiconductor layer and the p-type semiconductor layer from the n-electrode and the p-electrode, And recombine in the light-emitting layer, showing the release of energy in the form of photons, and the light-emitting wavelength depends on the forbidden band width of the light-emitting material.
- Fig. 5B is a schematic diagram of a partial planar structure of a light emitting panel provided according to another example of an embodiment of the present disclosure.
- the difference between the light-emitting panel shown in Figure 5B and the light-emitting panel shown in Figure 5A lies in the arrangement of the light-emitting units 220, the first direction in the light-emitting unit 220 shown in Figure 5A is perpendicular to the second direction, and the light-emitting unit 220 shown in Figure 5B
- the included angle between the first direction and the second direction is an obtuse angle.
- FIG. 5A and FIG. 5B schematically show that a plurality of light emitting units 220 are arranged at equal intervals along any direction, but are not limited thereto, and at least part of the light emitting units 220 in a certain direction may also be arranged at unequal intervals. of.
- the size of the light emitting unit 220 along the first direction is w
- the size of the light emitting unit 220 along the second direction is l
- two adjacent light emitting units arranged in the first direction The distance between the centers of the units 220 may be a
- the distance between the centers of two adjacent light emitting units 220 arranged in the third direction perpendicular to the first direction in the third direction may be b; wherein, a and b satisfy a ⁇ b.
- the above w and l satisfy w ⁇ l
- the length P of the diagonal of the quadrilateral is (a 2 +b 2 +2*a*b*cos ⁇ ) 1/2 .
- the dimension of the section line cut by the light emitting unit 220 by the extension of the line connecting the two first points 001 is L.
- the above-mentioned "the section line of the light emitting unit 220 cut by the extension line of the connection line of the two first points 001" may refer to the normal line between the extension line of the connection line of the two first points 001 and the light emitting unit 220 on the base substrate 210. Project a line connecting two points that intersect.
- the above L w/cos ⁇ .
- the first distance D1 P-L.
- the contour shape of the above-mentioned light-emitting unit 220 in the orthographic projection of the base substrate 210 is a circle
- the cross-sectional dimension L of the light-emitting unit 220 cut by the extension line of the line connecting the two first points 001 which is equal to the diameter of the circle.
- the most edge light converges as the light mixing point M of the two adjacent light emitting units 220 .
- the distance between the display panel and the base substrate By setting the distance between the display panel and the base substrate to be greater than the distance between the light mixing point M and the base substrate, the light emitted by adjacent light-emitting units can be mixed before entering the display panel to prevent The problem of lighting.
- the position of the above-mentioned light mixing point M is related to the size of the light emitting unit 220, the first distance D1 between adjacent light emitting units, and the most edge light in the light emitted by the light emitting unit 220.
- the angle ⁇ between the base substrates is related.
- two non-adjacent light emitting units 220 arranged along the V direction may also converge to form a mixed light point.
- the display device further includes an optical film 30 , a back frame 43 , a plastic frame 45 , a support frame 48 and a rear case 44 .
- the plastic frame 45 is configured to support the display panel 100 .
- the luminous plate 200 and the optical film 30 are arranged on the non-display side of the display panel 100, the plastic frame 45 is configured to support the supporting part of the display panel 100 between the optical film 30 and the display panel 100, and the optical film 30 is located on the luminous plate.
- the optical film 30 is configured to at least modulate the direction of the light emitted from the light emitting panel 20 .
- the optical film 30 may include multiple film layers, such as light diffusion structure, color conversion layer, prism layer and other film layers.
- the thickness of the light diffusing structure may be 1.5 mm.
- a support frame 48 is disposed between the optical film 30 and the light-emitting panel 20 , and the support frame 48 is configured to support the optical film 30 .
- FIG. 2 schematically shows that there is a distance between the light diffusion structure and the light-emitting panel 20, and the distance may be 7 millimeters.
- the light emitting board 20 includes a substrate 22 and a light emitting unit 21 disposed on a side of the substrate 22 facing the optical film 30 .
- the light emitting board 20 is configured to provide backlight for the display panel 10 .
- the substrate 22 may include structures such as a driving circuit and a reflective film. Substrate 22 may have a thickness of 1.27 millimeters.
- the light emitting board 20 and the supporting frame 48 are arranged on the back frame 43 .
- FIG. 6 is a schematic diagram of a partial cross-sectional structure of a display device provided according to an example in an embodiment of the present disclosure.
- the display device further includes a light diffusion structure 300 located between the light emitting panel 200 and the display panel 100 .
- the light diffusion structure 300 may only include one diffusion layer, or may include two or more diffusion layers, and the two or more diffusion layers may be bonded to each other by an adhesive (such as a pressure-sensitive adhesive).
- the adhesive may have diffusing properties to enhance the diffusing effect of the light diffusing structure.
- two or more diffusing membranes layers
- the embodiment of the present disclosure is not limited thereto, and the multilayer film layers included in the light diffusion structure may not be bonded to each other, for example, other optical films (such as prisms) may be sandwiched between the film layers on both sides included in the light diffusion structure .
- the display device may be a large-sized display device.
- the above-mentioned ⁇ ranges from 20° to 30°, and the above-mentioned first distance D1 and the above-mentioned L satisfy D1/L of 3-10.
- the diagonal length of the display surface of a large-size display device may be greater than 30 inches, specifically, such as 32 inches, 34 inches, etc.; large-size display devices include monitors, desktops, televisions and other products.
- the above-mentioned distance between adjacent light emitting units 220 may refer to a distance between edges of adjacent light emitting units 220 that are close to each other.
- the above "dimension of one light emitting unit 220" may refer to the maximum dimension of the light emitting unit 220 in a direction parallel to the base substrate.
- the above-mentioned ⁇ may be 20°, or 25°, or 30°.
- the value of D1/L may be 5-8.
- the value of D1/L may be 4-7.
- the length and width of the display surface of the large-size display device are DL and DW respectively, and the optimal viewing distance for the user to watch the large-size display device may be between 3DW and 5DW.
- the optimal viewing distance for the user to watch the large-size display device may be between 3DW and 5DW.
- the number of light-emitting units 220 included in the light-emitting board in the display device will not increase in proportion to the size of the display device. Therefore, the arrangement of the light-emitting units 220 on the light-emitting board in a large-sized display device
- the density is relatively small, that is, the distance between adjacent light emitting units 220, such as the first distance D1, may be relatively large.
- the light mixing point of the light emitted by two adjacent light emitting units 220 is the first light mixing point M1
- the distance between the first light mixing point M1 and the base substrate 210 is (D1*tan ⁇ )/2, the above distance can be called the first-order light mixing distance
- the position of the first light-mixing point M1 produces the first-order light mixing.
- the size of the section of the light emitting unit 220 cut by the extension line of the line connecting the two first points is L, along the V direction, the Nth light emitting unit 220 and the (N+2
- the light mixing point of light emitted by ) light emitting units 220 is the second light mixing point M2, and the distance between the second light mixing point M2 and the base substrate 210 is [(2*D1+L)*tan ⁇ ]/2,
- the above distance can be called the secondary light mixing distance, and the position of the second light mixing point M2 produces secondary light mixing; along the V direction, the light emitted by the Nth light emitting unit 220 and the (N+3)th light emitting unit 220
- the light mixing point is the third light mixing point M3, and the distance between the third light mixing point M3 and the base substrate 210 is [(3*D1+2L)*tan ⁇ ]/2, and the above distance can be called a three-stage mixing
- the light distance and the position of the third light mixing point M3 produce third
- N is a positive integer greater than zero. It can be understood that the intensity of light propagating in any direction is inversely proportional to the square of the distance, and the distance between the third-order light mixing point M3 and the substrate 210 is larger than that of the second-order light mixing point M2, while the second-order light mixing point M2 The distance between the light point M2 and the base substrate 210 is larger than that of the primary light mixing point M1 , so the light mixing effect at the primary light mixing point M1 is better.
- the thickness of the light diffusion structure 300 in the direction perpendicular to the base substrate 210 is less than (D1*tan ⁇ )/2, and the light diffusion structure 300 and the light emitting panel 200 are arranged at intervals, the distance between the surface of the light diffusion structure 300 facing the light-emitting plate 200 and the surface of the light-emitting unit 220 facing the base substrate 210 is the second distance D2, and the second distance D2 satisfies: (D1*tan ⁇ )/2 ⁇ D2 ⁇ [(3*D1+2L)*tan ⁇ ]/2.
- the thickness of the light diffusion structure 300 is less than (D1*tan ⁇ )/2, the thickness of the light diffusion structure 300 is less than the above-mentioned first-order light mixing distance. If the above-mentioned primary light mixing does not occur in the diffusion structure 300 , light shadows are likely to occur.
- the thickness H2 of the light diffusion structure 300 may be 3mm, and (D1*tan ⁇ )/2 is greater than 3mm.
- FIG. 7 is a schematic partial cross-sectional structural diagram of a display device provided according to an example in the embodiments of the present disclosure.
- the display device further includes a light diffusion structure 300 located between the light emitting panel 200 and the display panel 100 .
- the light diffusion structure 300 in the display device shown in FIG. 7 may have the same features as the light diffusion structure 300 shown in FIG. 6 , which will not be repeated here.
- the display device may be a small-sized display device.
- the above-mentioned ⁇ ranges from 10° to 25°, and the above-mentioned first distance D1 and the above-mentioned L satisfy D1/L of 5-11.
- the diagonal length of the display surface of the small-sized display device can be between 7 and 27 inches, specifically, it can be 7.9 inches, 8 inches, 9 inches, 9.7 inches, 10.9 inches, 12.9 inches, 27 inches, etc.
- Small-sized display devices include handheld computers, tablet computers, notebooks and other products.
- the above-mentioned distance between adjacent light emitting units 220 may refer to a distance between edges of adjacent light emitting units 220 that are close to each other.
- the above "dimension of one light emitting unit 220" may refer to the maximum dimension of the light emitting unit 220 in a direction parallel to the base substrate.
- the above ⁇ may be 10°, or 15°, or 20°, or 25°.
- the value of D1/L may be 6-10.
- the value of D1/L may be 7-8.
- the thickness of the light diffusion structure 300 in a direction perpendicular to the base substrate 210 is greater than (D1*tan ⁇ )/2, and the light diffusion structure 300 is in direct contact with at least part of the light emitting unit 220 .
- the aforementioned direct contact may mean that no space is provided between the two.
- the aforementioned direct contact may also refer to the direct contact between the light diffusion structure 300 and the surface of the packaging structure of the light emitting unit 220 .
- the thickness of the light diffusion structure 300 is greater than (D1*tan ⁇ )/2, the thickness of the light diffusion structure 300 is greater than the above-mentioned primary light mixing distance, and the light diffusion structure 300 can realize primary light mixing, and the light diffusion structure 300 and The light-emitting unit 220 can be placed in direct contact, and also has a better uniform light effect, and the probability of occurrence of light shadow problems is relatively low.
- the thickness of the light emitting unit 220 in a direction perpendicular to the base substrate 210 is H1
- the thickness H2 of the light diffusion structure 300 satisfies: [(D1*tan ⁇ )/2 ⁇ H1] ⁇ H2 ⁇ 5mm.
- the thickness H2 satisfies H2 ⁇ 4mm, or H2 may not be greater than 3mm.
- the position of the light-diffusing structure and the thickness of the light-diffusing structure can be set to make the display device have a thinner At the same time achieve better high dynamic lighting rendering (HDR) effect.
- HDR high dynamic lighting rendering
- Fig. 8 is a schematic diagram of a partial planar structure of a light-emitting panel provided according to an example of an embodiment of the present disclosure.
- the light emitting panel 200 includes a first area 201 and a second area 202 located at the edge of the first area 201 .
- the second area 202 may be a corner area of the light emitting panel 200 .
- the shape of the display area of the display panel may be a rectangle with rounded corners, the area corresponding to the corners of the display area in the light emitting area of the light emitting panel 200 is also adapted to be rounded, and the second area 202 may be the area where four rounded corners are located.
- the arrangement of the light emitting units located in the edge area of the light emitting panel may be determined according to the shape of the edge area of the display area of the display panel.
- the shape of the luminous panel may be similar to or even congruent with the shape of the display panel, or it may also be of a different shape.
- the light-emitting units 220 located in the first area 201 are arranged in an array along the first direction and the second direction, and the light-emitting units 220 located in the first area 201 are adjacently arranged in each quadrilateral 203 formed with a distance of
- the distances between the two farthest light emitting units 220 may be equal.
- the embodiments of the present disclosure are not limited thereto, and the distances between the two farthest light-emitting units in different quadrilaterals in the first region may also be unequal.
- the arrangement law of at least some of the light emitting units 220 in the light emitting units 220 located in the second area 202 is different from that of the light emitting units 220 located in the first area 201 .
- the second area 202 there is an arrangement in which two adjacent light-emitting units 220 are not arranged along the first direction (such as the X direction), the second direction (such as the Y direction), or the diagonal of the quadrilateral (such as the V direction). .
- a line connecting the centers of one light emitting unit 220 and any light emitting unit 220 adjacent to it passes through two second light emitting units on the edges of the two light emitting units 220 that are close to each other.
- Point 002 the distance between the two second points 002 is smaller than the first distance D1.
- the ratio of the distance between the two second points 002 to the first distance D1 is 0.6 ⁇ 0.9.
- the ratio of the distance between the two second points 002 to the first distance D1 is 0.7 ⁇ 0.8.
- the distance between the opposite edges of one light emitting unit 220 and any light emitting unit 220 adjacent to it is smaller than the first distance D1 .
- the distance between the edges of one light emitting unit 220 and any light emitting unit 220 adjacent to it is smaller than the first distance D1 .
- the two light-emitting units 220 in the quadrilateral 204 formed by the four light-emitting units 220 including the three light-emitting units 220 adjacent to the edge of the light-emitting panel the two light-emitting units 220 that are adjacent to and farthest from each other
- the distance D3 between the opposing edges is smaller than the first distance D1.
- the positional arrangement of the light emitting units 220 in the corner area (such as the second region 202 ) of the light emitting panel 200 may be different from the positional arrangement of the light emitting units 220 in the non-edge region (such as the first region 201 ),
- the arrangement of the four most adjacent light-emitting units 220 located in the corner area of the light-emitting panel is slightly different from the arrangement of the four most adjacent light-emitting units 220 in the non-edge area, that is, one light-emitting unit 220 located at the most corner
- the position of -1 moves towards the direction close to the other three light emitting units 220 .
- the above-mentioned four most adjacent light emitting units 220 may refer to four light emitting units arranged in a 2*2 array.
- the arrangement of the light-emitting units in the light-emitting panel shown in FIG. 8 is applicable to the display devices in the examples shown in FIGS. 6 and 7 .
- Fig. 9 is a schematic diagram of a partial planar structure of a light-emitting panel provided according to another example of an embodiment of the present disclosure.
- the light emitting board 200 includes a plurality of light emitting unit rows 2201, each light emitting unit row 2201 includes at least two light emitting units 220 arranged along a first direction, and the plurality of light emitting unit rows 2201 are aligned with the first
- the direction is arranged vertically.
- the direction perpendicular to the first direction may be the second direction, or other directions.
- a quadrilateral 205 is formed by the light-emitting unit row 2201 located on the outermost edge and the four light-emitting units 220 in the immediately adjacent light-emitting unit row 2201.
- the first distance D1 between the units 220 is smaller than the first distance D1 between the two light-emitting units 220 arranged adjacently and farthest apart in the other two adjacent rows of light-emitting units 2201 .
- the last (or first) row of light-emitting unit rows 2201 and the penultimate row (or second row) of light-emitting unit rows 2201 are most similar to each other.
- the arrangement of the four adjacent light-emitting units 220 and the most adjacent four light-emitting units 220 in the two adjacent rows of light-emitting unit rows 2201 in the middle area is briefly described.
- the row spacing between the last row (or first row) of light-emitting unit rows 2201 and the penultimate row (or second row) of light-emitting unit rows 2201 is smaller than that between any adjacent light-emitting unit rows 2201 in the middle area Line spacing.
- the row spacing here may refer to the distance between the edges of the light emitting units in two adjacent rows that are close to each other.
- the above-mentioned four most adjacent light emitting units 220 may refer to four light emitting units arranged in a 2*2 array.
- the light-emitting panel includes a plurality of light-emitting unit columns, each light-emitting unit column includes at least two light-emitting units arranged along the second direction, and the plurality of light-emitting unit columns direction arrangement, the first distance between the two light-emitting units in the light-emitting unit column located on the outermost edge and the light-emitting unit column immediately adjacent to it is smaller than the first distance between the two light-emitting units in the other two adjacent columns of light-emitting unit rows .
- the direction perpendicular to the second direction may be the first direction, or other directions.
- the most adjacent four light-emitting units in the last column (or first column) of light-emitting unit columns and the penultimate column (or second column) of light-emitting unit columns and the middle area (that is, except for the above-mentioned four columns of light-emitting unit columns)
- the arrangement of the most adjacent four light-emitting units in the adjacent two columns of light-emitting unit columns is slightly different, such as the last column (or first column) of light-emitting unit columns and the penultimate column (or first column) Two columns
- the row spacing between the light-emitting unit columns is smaller than the column spacing between any adjacent light-emitting unit columns in the middle area.
- the column pitch here may refer to the distance between the edges of the light emitting units in two adjacent columns that are close to each other.
- the above-mentioned four most adjacent light emitting units may refer to four light emitting units arranged in a 2*2 array.
- the arrangement of the light-emitting units in the light-emitting panel shown in FIG. 9 is applicable to the display devices in the examples shown in FIGS. 6 and 7 .
- the display panel includes a plurality of pixel units, and the distance between adjacent pixel units can be set according to the resolution limit of human eyes.
- the minimum distance between two adjacent pixel units should be able to be distinguished by human eyes at least at an optimal viewing distance.
- the distance between two adjacent pixel units should not be less than (D*1.22* ⁇ )/d, where D is the viewing distance of the display surface of the display device, ⁇ is the wavelength of light to which the human eye is most sensitive, and d is the human eye
- D is the viewing distance of the display surface of the display device
- ⁇ is the wavelength of light to which the human eye is most sensitive
- d is the human eye
- the diameter of the pupil, the length of the display surface of the display panel is L0, the width is W, and D takes a value between 3W and 5W.
- each light-emitting unit on the light-emitting panel can correspond to a pixel unit and provide a backlight.
- multiple light-emitting units on the light-emitting board are grouped first, for example, every 2*2 light-emitting units are connected in series as a light-emitting unit group, and multiple light-emitting units in the same light-emitting unit group are connected in series, such as in parallel Or connect in a series-parallel manner.
- Each light-emitting unit group corresponds to several or dozens, even hundreds, or thousands of pixel units to provide backlight for it.
- the distance ⁇ y between the centers of adjacent light-emitting unit groups is not less than (D *1.22* ⁇ )/d, correspondingly, neither the length nor the width of the area occupied by each light emitting unit group is less than (D*1.22* ⁇ )/d.
- the number K of light-emitting unit groups arranged along the extension direction (such as one of the first direction and the second direction) of the long side of the display surface of the display panel (the side whose length is L0) is less than L0/ ⁇ y, along the display
- the number J of light-emitting unit groups arranged in the extension direction (eg, the other of the first direction and the second direction) of the short side (the side whose length is W) of the display surface of the panel is smaller than W/ ⁇ y.
- the resolution of the pixel units included in the display panel is P*Q
- the light emitting panel includes K*J light emitting unit groups
- P can be divisible by K
- Q can be divisible by J.
- the distance between the center lines of any two adjacent light emitting units 220 passing through the two points on the edges of the arbitrary two light emitting units 220 that are close to each other is not less than that located on the light emitting board 200
- the minimum distance between the outermost light-emitting unit 220 and the edge of the light-emitting panel 200 is not less than that located on the light emitting board 200 .
- the distance between the edges of any two adjacent light-emitting units 220 facing each other is not less than the distance between the light-emitting unit 220 located at the outermost edge of the light-emitting panel 200 (light-emitting unit 220-1 as shown in FIG.
- the minimum distance between them can be avoided to the greatest extent that the surrounding brightness of the display area of the display panel is lower than the brightness of the central area.
- Fig. 10A is a schematic plan view of a light emitting panel provided according to another example of an embodiment of the present disclosure.
- a plurality of supporting parts 400 are provided between the light emitting board 200 and the light diffusion structure 300 .
- a plurality of supporting parts 400 are provided between the optical film 30 and the light emitting panel 200 in the display device shown in FIG. 2 .
- the supporting part 400 may be configured to redirect the light emitted from the light emitting unit 220 to be emitted more towards the front viewing angle of the display panel.
- the shape of the supporting part 400 can have any desired shape, and the figure shown is only exemplary, for example, its cross-sectional shape parallel to the base substrate 210 is circular or polygonal, and/or has a smooth upper surface.
- the support part 400 is configured to support the light diffusion structure 300 .
- the thickness of the support part 400 may be equal to the distance between the light diffusion structure 300 and the base substrate 210 , that is, the second distance D2 .
- the thickness of the support part 400 in a direction perpendicular to the base substrate 210 is smaller than the second distance D2.
- the light diffusion structure will inevitably contact the supporting part due to gravity.
- the height of the support part can be smaller than the above-mentioned second distance D2 1-2mm.
- a plurality of supporting parts 400 are connected to form at least a first polygon 401 and a second polygon 402 parallel to the base substrate 210, wherein the second polygon A shape 402 surrounds the first polygon 401 .
- the shapes of the first polygon 401 and the second polygon 402 may be the same or different.
- the above-mentioned "connecting a plurality of supporting parts 400" may refer to sequentially connecting the geometric centers of the orthographic projections of the supporting parts 400 on the base substrate 210 clockwise or counterclockwise.
- the first polygon 401 includes a plurality of first diagonals 4011
- the second polygon 402 includes a plurality of second diagonals 4021
- the plurality of first diagonals At least two of the plurality of second diagonal lines 4021 pass through the geometric center O of the light emitting panel 200 , and/or at least two of the plurality of second diagonal lines 4021 pass through the geometric center O of the light emitting panel 200 .
- the display device When the display device is assembled and shipped as a whole, the display device can be in a flat state. At this time, the luminous plate is located on the side of the light diffusion structure facing the ground, and the center position of the light diffusion structure will be lower than the surrounding positions due to gravity. , by setting the position of the supporting part, it is beneficial to alleviate the problem that the central position of the light diffusion structure is lower than the surrounding positions.
- the density of the support part 400 corresponding to the center area of the light diffusion structure 300 may be greater than the density of the support part 400 corresponding to the edge area of the light diffusion structure 300 .
- the light diffusion structure 300 includes a plurality of film layers.
- the light diffusion structure 300 may include a first light diffusion layer 301 and a second light diffusion layer 302 .
- the backlight includes structures such as a light emitting plate provided with a plurality of light emitting units, and a light diffusion structure.
- the light-diffusing structure may include two light-diffusing layers, such as a first light-diffusing layer and a second light-diffusing layer.
- one of the first light diffusion layer 301 and the second light diffusion layer 302 can be a particle diffusion plate, and the other of the first light diffusion layer 301 and the second light diffusion layer 302 can be a diffusion film with microstructure on the surface .
- the thickness of the second light diffusion layer 302 is smaller than the thickness of the first light diffusion layer 301 .
- the light diffusion structure may include three or more light diffusion layers.
- the particle diffusion plate can refer to the addition of chemical particles in the substrate as scattering particles, so that when the light passes through the scattering layer, it will continuously refract, reflect and scatter in two media with different refractive indices, so as to produce optical diffusion Effect.
- the thickness of the granular diffuser plate can be 1.5mm, 2mm, 2.5mm or 3mm. The greater the thickness, the better the uniform light effect but the greater the brightness loss.
- the aforementioned substrate may include polymethyl methacrylate (PMMA), polycarbonate (PC), polystyrene (PS), polypropylene (PP) and the like.
- a diffuser film with microstructures on the surface can form a periodic array of micro-featured structures on the surface of the substrate through an embossing process, which can cause light to be refracted in different directions when passing through the micro-featured structures, changing the progress of light
- the route allows the incident light to fully scatter to achieve a softer and more uniform irradiation effect.
- the thickness of the diffusion film is generally 90-100 ⁇ m.
- the aforementioned substrate may include polymethyl methacrylate (PMMA), polycarbonate (PC), polystyrene (PS), polypropylene (PP) and the like.
- the area of any one of the multiple film layers is S0
- the area of the first polygon 401 is S1
- S0 and S1 satisfy: S0/S1 ⁇ 16.
- the area of the diaphragm 302 may be 293560 square millimeters, and the area of the first polygon 401 may be 17873 square millimeters.
- the area of the diaphragm 302 may be 46818 square millimeters, and the area of the first polygon 401 may be 2772 square millimeters.
- the area of the second polygon 402 is S2, and S0 and S2 satisfy: S0/S2 ⁇ 2.
- the area of the diaphragm 302 may be 293560 square millimeters, and the area of the second polygon 402 may be 144810 square millimeters.
- the area of the diaphragm 302 may be 46818 square millimeters, and the area of the second polygon 402 may be 17728 square millimeters.
- FIG. 11 is a schematic diagram of a display device including the light emitting panel shown in FIG. 6 and FIG. 10A .
- FIG. 11 only schematically shows a laminated view of a display panel and a light emitting panel.
- the plane shape of the display panel 100 parallel to the base substrate 210 is a quadrilateral, and the display panel 100 includes two long sides LE and two short sides SE, and the long side LE and the The short sides SE are connected alternately.
- the longest first diagonal line 4011 and a straight line parallel to the long side LE (such as a straight line parallel to the X direction) ) is the first included angle ⁇ 1
- the first included angle ⁇ 1 is the smallest one among the multiple included angles between the multiple first diagonal lines 4011 and the above-mentioned straight line.
- the angle between the first diagonal line 4011 with the shortest length among the plurality of first diagonal lines 4011 and the above-mentioned straight line is the second angle ⁇ 2 , the second angle ⁇ 2
- the two included angles ⁇ 2 are the largest one among the multiple included angles between the multiple first diagonal lines 4011 and the above-mentioned straight line.
- the dimension of the first polygon in the direction parallel to the long side of the display panel is greater than the dimension of the first polygon in the direction parallel to the short side of the display panel, and the deformation in the direction of the long side of the display panel is relatively large, according to the force Finite element analysis, by adjusting the position, spacing and density of the support columns, is beneficial to the support of the support part to the light diffusion structure and the display panel.
- the light-emitting panel 200 includes a plurality of sub-light-emitting panels 2001 , and each sub-light-emitting panel 2001 is provided with at least one supporting portion 400 .
- the size of the light-emitting board 200 is almost the same as that of the display panel 100, when a PCB board is used as the base substrate 210 of the light-emitting board 200, limited by the characteristics of the PCB board material itself and the process, in a large-sized display device Therefore, it is impossible to use a whole piece of PCB as the base substrate of the light-emitting board 200 , so it is necessary to use multiple pieces of splicing.
- the base substrate 210 of the luminescent panel 200 can also be made of glass.
- the substrate substrate will also choose to use multiple pieces of glass splicing.
- the light-emitting panel 200 may include six sub-light-emitting panels 2001, and the six sub-light-emitting panels 2001 may be arranged in a 2*3 array or a 3*2 array.
- the size of each sub-light-emitting panel 2001 may be 331.85mm*393mm.
- the size of each sub-light-emitting panel 2001 may be 131.6mm*354.4mm.
- the light-emitting panel 200 may include a first sub-light-emitting panel 2001-1, a second sub-light-emitting panel 2001-2, a third sub-light-emitting panel 2001-3, a fourth sub-light-emitting panel 2001-4, a fifth sub-light-emitting panel 2001- 5 and the sixth sub-luminous panel 2001-6.
- each sub-light emitting board 2001 is provided with a plurality of reserved positions 2002 on the side facing the light diffusion structure 300 , and at least one of the reserved positions 2002 on each sub-light emitting board 2001 is provided with a support portion 400 .
- the number of reserved positions 2002 provided on each sub-light-emitting board 2001 is greater than the number of supporting parts 400 provided on each sub-light-emitting board 2001 .
- the number and relative positional relationship of the plurality of reserved positions 2002 set on different sub-light-emitting panels 2001 are the same, so as to facilitate the setting of the supporting part and the mass production of the sub-light-emitting panels.
- the number of reserved positions 2002 provided on the first sub-light-emitting panel 2001-1 is the same as the number of reserved positions 2002 provided on the fourth sub-luminous panel 2001-4, and are symmetrically distributed with respect to the central line along the X direction.
- the number of reserved bits 2002 on the first sub-light-emitting panel 2001-1 is the same as the number of reserved bits 2002 on the sixth sub-light-emitting panel 2001-6, and they are symmetrically distributed relative to the geometric center.
- FIG. 10A schematically shows that the shape of the first polygon 401 is a parallelogram, and the four end points of the parallelogram are provided with support parts 400 .
- the reserved position 2002 located on any side of the first polygon 401 may also be provided with a supporting part, so as to further increase the supporting force of the supporting part.
- At least two support portions 400 with the same distance from the geometric center O and the smallest distance are respectively located on different sub-light-emitting panels 200, and the at least two support portions 400 form a first polygonal shape.
- 4011 at least one vertex.
- the above at least two support parts 400 with the same and minimum distance from the geometric center O may include two support parts 400 distributed centrally symmetrically with respect to the geometric center O.
- the above-mentioned at least two supporting parts 400 may include supporting parts 400 located at vertices of the first polygon 4011 , and may also include supporting parts 400 located on sides of the first polygon 4011 .
- the at least two support parts 400 with the same distance from the geometric center O and the smallest distance may be the two support parts 400 located at the two ends of the first diagonal 4011 with the shortest length in the first polygon 401 , the two supporting parts 400 are symmetrically distributed relative to the geometric center O.
- each support portion 400 provided on each sub-light-emitting panel 2001 constitutes the vertices of the second polygon 402 .
- a plurality of support parts 400 may be provided on each sub-light-emitting board 2001, and the support parts 400 provided on each sub-light-emitting board 2001 may include a support part 400 located on the vertex of the second polygon 402, or may include a support part 400 located on the second polygon 402.
- the support portion 400 on the side of the polygon 402 may be provided on each sub-light-emitting board 2001.
- FIG. 9 Taking the arrangement of the light emitting units 220 in the light emitting panel 200 shown in FIG. 6 as shown in FIG. 9 as an example, but not limited thereto, the arrangement shown in FIG. 8 can also be used.
- FIG. 9 and FIG. 10A four light-emitting units 220 forming a quadrangle 203 form a light-emitting unit group 2200, and the support portion 400 is located between adjacent light-emitting unit groups 2200, thereby reducing the impact of the support portion on each light-emitting unit group. The light effect of the light-emitting units in the light-emitting unit group is affected.
- the back frame 43 shown in FIG. 2 can protect and support the light-emitting panel 200, or have a certain heat dissipation function.
- the light-emitting board 200 may further include a plurality of screw holes, and screws configured to fix the base substrate 210 and the back frame may be disposed in the screw holes.
- the above-mentioned screw holes may be distributed between adjacent light emitting unit groups, so as to reduce the impact of the screw holes on the light effect of the light emitting units in each light emitting unit group.
- the reserved bits 2002 include vias extending through the base substrate 210 .
- the ratio of the area of each reserved bit 2002 to the area of each screw hole may be 0.9 ⁇ 1.1.
- the area of each reserved bit 2002 is equal to the area of each screw hole.
- the area of each reserved position 2002 may be 14.56 square millimeters, and the area of each screw hole may be 14.522 square millimeters.
- the screw holes may be circular through holes.
- the through-holes included in the reserved positions may be vertical elliptical through-holes.
- the vertical direction here may refer to a direction parallel to the short side of the display panel.
- the base substrate may also be provided with a positioning hole, and the positioning hole may include a transverse elliptical through hole and a circular through hole.
- the lateral direction here may refer to a direction parallel to the long sides of the display panel.
- a plurality of sub-luminescent panels 2001 are arranged in an array along a first direction (X direction as shown in FIG. 10A) and a second direction (Y direction as shown in FIG. 10A), and a plurality of sub-luminescent panels 2001 At least part of the structures on the light-emitting panel 200 are center-symmetrically distributed with respect to the geometric center O of the light-emitting panel 200 .
- the support portions 400 on the plurality of sub-light emitting panels 2001 are symmetrically distributed relative to the geometric center O of the light emitting panel 200 .
- the support parts 400 on the third sub-light emitting panel 2001 - 3 and the support parts 400 on the fourth sub-light emitting panel 2001 - 4 are center-symmetrically distributed with respect to the geometric center O of the light emitting panel 200 .
- the support portions 400 on the first sub-light-emitting panel 2001-1 and the support portions 400 on the sixth sub-light-emitting panel 2001-6 are center-symmetrically distributed with respect to the geometric center O of the light-emitting panel 200 .
- the support portions 400 on the second sub-light emitting panel 2001 - 2 and the support portions 400 on the fifth sub-light emitting panel 2001 - 5 are center-symmetrically distributed with respect to the geometric center O of the light emitting panel 200 .
- FIG. 10B is a schematic diagram of a side of the sub-light-emitting panel shown in FIG. 10A that is not provided with a light-emitting unit.
- a driving circuit 610 is provided on the side (such as the back side) of each sub-light-emitting board 2001 on which no light-emitting unit is provided, and a plurality of driving circuits 610 on multiple sub-light-emitting boards 2001 are relative to the side of the light-emitting board 200
- the geometric center O is symmetrically distributed to the center, so that the difference in the length of traces in different driving circuits can be minimized.
- the display device further includes a converter (converter) 630 and a timing controller (TCON) 620.
- the timing controller 620 is used to generate and provide a driving control signal to the converter 630.
- the converter 630 is used to convert and distribute the driving control signal.
- Multiple control signals are provided to the driving circuit 610 on each sub-light emitting board 2001, and the driving circuit 610 accurately distributes the signals corresponding to each light emitting unit group.
- the drive circuit 610 on each sub-light-emitting board 2001 is electrically connected to the converter 630, and by distributing a plurality of sub-light-emitting boards symmetrically with respect to the geometric center, the position of the converter and the driving circuit on each sub-light-emitting board is facilitated.
- Each sub-light-emitting board 2001 includes at least one driving circuit 610, and the driving circuit 610 may be an integrated circuit, a flexible circuit board, a chip-on-chip, a programmable logic array, a thin film transistor, or a combination thereof.
- FIG. 12 is a schematic partial cross-sectional structural view of a display device provided according to an example of an embodiment of the present disclosure
- FIG. 13A is a schematic plan view of a reflective film in the display device shown in FIG. 12
- the reflective film in FIG. 12 is a cross section taken along line BB' shown in FIG. 13A.
- the distance between the light-emitting plate 200 and the light-diffusing structure 300 shown in FIG. 12 may be the same as the distance between the light-emitting plate 200 and the light-diffusing structure 300 in the display device shown in FIG. 6 .
- the display device further includes a reflective film 500 located between the base substrate 210 and the light diffusion structure 300 .
- the display panel 100 , light diffusion structure 300 and light emitting panel 200 shown in FIG. 12 may have the same features as the display panel 100 , light diffusion structure 300 and light emitting panel 200 in the display device shown in FIG. 6 , which will not be repeated here.
- the reflective film 500 includes a plurality of first openings 501 configured to expose at least part of the reserved bits.
- the first opening 501 is configured to pass through the support part 400 .
- the reflective film 500 further includes a plurality of second openings 502 configured to expose at least part of the light emitting units 220 of the plurality of light emitting units 220 .
- the reflective film 500 also includes openings configured to expose screw holes, and openings configured to expose positioning holes, etc.; the reflective film 500 can also cover screw holes, positioning holes, etc. to avoid exposure and can be set according to actual products.
- the disclosed embodiments are not limited in this regard.
- the multiple openings of the reflective film 500 only expose the light-emitting unit 220 and structures such as reserved positions and screw holes that must be exposed, so as to improve the overall reflectivity of the reflective film as much as possible.
- the reflective film 500 includes two sub-reflective films 510 and 520 , and a gap is provided between the two sub-reflective films 510 and 520 , so as to reserve a gap for the thermal expansion of the reflective film.
- the gap between the two sub-reflective films can be attached with the reflective strip 700 alone.
- the first sub-luminescent panel 2001-1, the fourth sub-luminescent panel 2001-4, a part of the second sub-luminescent panel 2001-2, and a part of the fifth sub-luminescent panel 2001-5 The sub-reflective film 510 is pasted on it, and the third sub-luminous panel 2001-3, the sixth sub-luminous panel 2001-6, another part of the second sub-luminous panel 2001-2, and another part of the fifth sub-luminous panel 2001-5 are attached Aconite reflective film 520 .
- the reflective film 500 may include multiple layers, for example, the reflective film 500 may include white ink and/or a reflective sheet disposed on the base substrate 210 .
- the white ink can be made by patterning before binding the light-emitting unit and the supporting part, and the reflective sheet can be attached to the light-emitting plate after installing and fixing the supporting part of the light-emitting unit.
- the material of the reflective strip 700 may be the same as that of the reflective film.
- the reflective film 500 can shield the test points on the light emitting board 200 as much as possible, for example, the test points can be used to test the electrical performance and other characteristics of the light emitting unit.
- FIG. 13B is a schematic diagram of a reflective film in another example of an embodiment of the present disclosure.
- the reflective film 500 includes two sub-reflective films 510 and 520 , and the two sub-reflective films 510 and 520 are partially overlapped. Except that the relative positional relationship between the two sub-reflective films shown in FIG. 13B is different from that of the two sub-reflective films shown in FIG. 13A , the reflective film shown in FIG. 13B may have the same characteristics as the reflective film shown in FIG. 13A . Let me repeat.
- FIG. 14A is a structural diagram of a supporting part according to some embodiments of the present disclosure
- Fig. 14B is a structural diagram of another supporting part according to some embodiments of the present disclosure
- Fig. 14C is a structural diagram of a supporting part according to some embodiments of the present disclosure
- a structural diagram of another support portion
- FIG. 14D is a structural diagram of another support portion according to some embodiments of the present disclosure
- FIG. 15A is a structural diagram of another support portion according to some embodiments of the present disclosure
- FIG. 15B is a structural diagram of another supporting part according to some embodiments of the present disclosure.
- the supporting part 400 includes a base 1313 disposed in the first opening of the reflective film, and a first body part 1314 located on the side of the base 1313 away from the substrate and connected to the base 1313 .
- the base 1313 of the support part 400 By installing the base 1313 of the support part 400 in the first opening of the reflective film, the displacement of the support part 400 along the direction parallel to the plane of the base substrate can be restricted, and the distribution of the support part 400 in the direction parallel to the base substrate can be ensured.
- the uniformity of the light diffusion structure supported by the supporting part 400 reduces the difference in deformation of different regions of the optical film included in the light diffusion structure, and improves the surface flatness of the optical film to ensure its optical performance.
- the first main body portion 1314 of the supporting portion 400 is used to support the optical film, so as to reduce the amount of deformation of the optical film caused by force.
- the side of the base 1313 away from the first body portion 1314 is the first bottom surface 1311
- the side of the base 1313 connected to the first body portion 1314 is the first top surface 1315
- the side of the first body portion 1314 is the second bottom surface 1312
- the orthographic projection of the second bottom surface 1312 on the base substrate covers the orthographic projection of the first top surface 1315 on the base substrate, so that the base 1313 and the first main body part 1314 Form a stepped surface.
- the thickness of the base 1313 along the direction perpendicular to the base substrate is less than or equal to the depth of the first opening of the reflective film.
- the first bottom surface 1311 is pressed against the surface of a certain film layer on the luminescent plate, and the second bottom surface 1312 is pressed against the surface of the reflective film to support the supporting part 400.
- Carry out position limiting, adjust the installation height of support part 400 thereby can improve the uniformity of the installation height of each support part 400, make the support height of each support part 400 to the corresponding area of optical film roughly equal, different areas of optical film
- the amount of deformation is approximately equal, which is beneficial to improve the surface flatness of the optical film to ensure its optical performance.
- the orthographic projection of the second bottom surface 1312 of the support part 400 on the base substrate covers the orthographic projection of the corresponding first opening on the base substrate, so that the second bottom surface 1312 of the support part 400 can block the first opening and avoid Since the first opening is provided in the reflective film, the reflective area of the reflective film is reduced, thereby avoiding affecting the overall light extraction efficiency of the luminescent plate and the display effect of the display device.
- the cross-sectional area of the first main body 1314 along the direction S parallel to the plane of the base substrate gradually decreases.
- the volume of the first main body 1314 can be reduced, thereby reducing the light exposure of the first main body 1314 of the supporting part 400.
- the blocking function increases the amount of light emitted by the luminescent plate along the thickness direction Z of the base substrate, thereby improving the light extraction efficiency of the luminescent plate.
- the first main body portion 1314 of the support portion 400 includes a plurality of cross sections along the direction S parallel to the plane where the base substrate is located, at least one of which is greater than or equal to the cross section located on the side of the cross section away from the base substrate.
- the area of the cross section is not limited to the area of the cross section.
- the shape of the first body portion 1314 of the support portion 400 may be a cone.
- the shape of the first main body portion 1314 of the support portion 400 may also be a circular truncated cone.
- the shape of the first main body 1314 of the supporting part 400 can also be a cylinder.
- the supporting part 400 is the structure shown in FIG. 14D
- the base 1313 of the supporting part 400 is a buckle
- the buckle includes a first bottom surface 1311 close to the substrate.
- the first main body 1314 of the supporting part 400 includes a seat body connected with the buckle, and a round platform connected with the seat body on the side away from the buckle, wherein the seat body includes a second bottom surface 1312 connected with the buckle.
- the reserved position of the base substrate of the luminescent panel includes a through hole, and the base 1313 of the support part 400 shown in FIG. Part 400 is fixed.
- the supporting part may also be glued on the base substrate, and no through hole may be provided in the reserved position.
- a fixed layer is provided in the first opening of the reflective film, and at least part of the base 1313 of the support part 400 is embedded in the fixed layer and connected to the fixed layer, so that the support part 400 is fixed on the substrate through the fixed layer.
- the base 1313 of the support part 400 is embedded in the fixed layer, so that part of the glue overflows from the first opening, and there will be glue between the second bottom surface 1312 of the support part 400 and the reflective film.
- the thickness of some glue after curing is small, and the thickness range can be 0-10 microns.
- the bonding area between the support part 400 and the fixed layer can be increased, and the bonding strength between the support part 400 and the fixed layer can be improved.
- the bonding strength between the support part 400 and the fixed layer can be further improved by increasing the bonding area between the base 1313 of the support part 400 and the fixed layer.
- the support part 400 in FIG. 14A is adopted, and the base 1313 is hollow inside The cylindrical structure makes the inside of the base 1313 also bond with the fixing layer.
- the shape of the orthographic projection of the base 1313 of the supporting part 400 on the base substrate may be a ring shape, that is, the base 1313 has a hollow cylindrical structure.
- the shape of the base 1313 may also be columnar.
- the base 1313 includes a plurality of protrusions 1315 protruding from the second bottom surface 1312 toward the base substrate.
- the supporting part 400 includes a base 1322 , and a second body part 1323 located on the side of the base 1322 away from the base substrate and connected to the base 1322 .
- At least one groove 1321 is provided on the side of the base 1322 close to the base substrate, and the radial dimension D02 of the orthographic projection of the side of the second body part 1323 close to the base 1322 on the base substrate is smaller than that of the base 1322 close to the second body part The radial dimension D03 of the orthographic projection of one side of 1323 on the base substrate.
- the radial dimension D02 of the orthographic projection of the side of the second body part 1323 close to the base 1322 on the base substrate is smaller than that of the side of the base 1322 close to the second body part 1323 on the base substrate.
- the shape of the base 1322 of the supporting part 400 is a cylinder
- the shape of the second main body 1323 is a cone. It is equivalent to removing part of the volume of the cylinder on the basis of the cylinder to obtain a support part 400 with a smaller volume, thereby reducing the blocking effect of the support part 400 on light.
- the radial dimension D02 of the orthographic projection of the side of the second body part 1323 close to the base 1322 on the base substrate is smaller than that of the side of the base 1322 close to the second body part 1323 on the base substrate.
- the shape of the base 1322 of the supporting part 400 is a truncated cone
- the shape of the second main body 1323 is a cone. It is equivalent to removing part of the volume of the cone on the basis of the cone to obtain a smaller-volume support portion 400 , thereby reducing the blocking effect of the support portion 400 on light.
- the side of the supporting part 400 close to the base substrate is fixedly connected to the base substrate through the fixing layer.
- a fixed layer is disposed in the first opening of the reflective film, and the side of the support portion 400 close to the base substrate is fixedly connected to the base substrate through the fixed layer.
- the support part 400 is disposed on the side of the reflective film away from the base substrate, a fixed layer is provided between the support part 400 and the reflective film, and the side of the support part 400 close to the base substrate is fixedly connected to the base substrate through the fixed layer.
- the thickness of the fixed layer should be set relatively thin, ranging from 30 ⁇ m to 100 ⁇ m, such as 30 ⁇ m, 40 ⁇ m, 65 ⁇ m, 80 ⁇ m or 100 ⁇ m, to improve the bonding strength between the supporting part 400 and the fixed layer.
- the maximum radial dimension of the supporting portion 400 ranges from 2 mm to 10 mm.
- the height of the supporting part 400 ranges from 1 mm to 12 mm.
- FIG. 16 is a schematic diagram of at least part of the structure of the light emitting board and the side of the light emitting board facing the display panel in the display device shown in FIG. 4A or FIG. 6 .
- a diffusion layer 031 As shown in FIG. 16 , a diffusion layer 031 , brightness enhancement films 032 and 033 and a color conversion layer 034 are further disposed between the light diffusion structure 300 and the display panel.
- the brightness enhancement film 033 includes protrusions on the surface away from the light emitting panel 200 .
- the brightness-enhancing film 033 can be a prism layer, which plays a role of concentrating light and improves the brightness of light output at a front viewing angle.
- the brightness enhancement film 032 is an additional brightness enhancement film disposed on the side of the brightness enhancement film 033 away from the light emitting panel 200 to further collimate the backlight, thereby increasing the brightness of the display device.
- the color conversion layer 034 is located between the brightness enhancement film 033 and the light diffusion structure 300 .
- the color conversion layer 034 may convert the light from the light emitting unit from one color to another color.
- the color conversion layer 034 may include a phosphor layer that converts blue light into white light.
- the phosphor layer includes quantum dots that convert blue light into red and green light.
- the color conversion layer 034 may include a partially reflective layer in addition to the phosphor layer.
- a partially reflective layer also known as a dichroic layer or dichroic filter layer
- film layer 301 and film layer 302 may be attached using an adhesive.
- film layer 301 and film layer 302 may be laminated together to form a unitary film.
- film layer 302 has an upper surface with microlenses 036 .
- the microlens 036 may be formed by a plurality of grooves in the surface of the film layer 302 away from the light emitting panel 200 .
- the film layer 302 has a plurality of protrusions 037 protruding toward the light emitting panel 200 .
- film layer 301 has an upper surface with microlenses 035 .
- the microlens 035 can be formed by a plurality of grooves in the surface of the film layer 301 away from the light-emitting panel 200 , and the microlens 035 can reduce total internal reflection.
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Abstract
Description
Claims (35)
- 一种显示装置,包括:显示面板;发光板,位于所述显示面板的非显示侧,且与所述显示面板层叠设置,其中,所述发光板包括衬底基板以及设置在所述衬底基板上的多个发光单元,至少一个发光单元在平行于所述衬底基板的方向上的最大尺寸不大于3毫米;所述多个发光单元中紧邻的四个发光单元的中心连线构成四边形,所述四个发光单元中任意两个发光单元均相邻设置,构成所述四边形的且距离最远的两个发光单元的中心连线经过该两个发光单元的彼此靠近的边缘上的两个第一点,所述两个第一点之间的距离为第一距离D1,所述发光单元发出的光线中最边缘的光线与平行于所述衬底基板的平面之间的夹角为θ,所述显示面板与所述衬底基板的彼此靠近的表面之间的最小距离不小于D1*tanθ/2。
- 根据权利要求1所述的显示装置,其中,所述四边形包括平行四边形。
- 根据权利要求1或2所述的显示装置,其中,所述多个发光单元中的至少部分发光单元沿第一方向和第二方向阵列排布,所述第一方向与所述第二方向相交;沿所述第一方向排列的相邻两个发光单元以及与该相邻两个发光单元在所述第二方向上分别相邻的两个发光单元的中心连线构成所述四边形,所述四边形的边与所述第一方向或者所述第二方向的夹角范围在-20°~20°之间取值。
- 根据权利要求1-3任一项所述的显示装置,还包括:光扩散结构,位于所述发光板与所述显示面板之间,所述光扩散结构在垂直于所述衬底基板的方向上的厚度小于D1*tanθ/2,其中,所述光扩散结构与所述发光板间隔设置,所述发光单元被所述两个第一点的连线的延长线所截的截线尺寸为L,所述光扩散结构面向所述发光板一侧表面与所述发光单元面向所述衬底基板的表面之间的距离为第二距离D2,所述第二距离D2满足:D1*tanθ/2<D2<[(3*D1+2L)*tanθ]/2。
- 根据权利要求1-3任一项所述的显示装置,还包括:光扩散结构,位于所述发光板与所述显示面板之间,所述光扩散结构与至少部分发光单元直接接触,所述发光单元在垂直于所述衬底基板的方向上的厚度为H1,所述光扩散结构的厚度H2满足:D1*tanθ/2-H1≤H2≤5mm。
- 根据权利要求1-3以及5任一项所述的显示装置,其中,所述发光单元包括未封装的发光二极管芯片,所述未封装的发光二极管芯片在平行于所述衬底基板的方向上的最大尺寸不大于500微米。
- 根据权利要求6所述的显示装置,其中,所述多个发光单元面向所述显示面板的一侧设置有保护层。
- 根据权利要求1-5任一项所述的显示装置,其中,所述发光单元包括发光二极管芯片以及被配置为封装所述发光二极管芯片的封装结构,相邻发光单元的封装结构之间设置有间隔。
- 根据权利要求1-5任一项所述的显示装置,其中,所述发光板包括第一区和位于所述第一区的边缘的第二区,位于所述第一区的所述发光单元阵列排布,所述第二区中,一个发光单元和与其相邻的任一发光单元的中心连线经过该两个发光单元的彼此靠近的边缘上的两个第二点,所述两个第二点之间的距离小于所述第一距离。
- 根据权利要求9所述的显示装置,其中,所述第二区中,所述两个第二点之间的距离与所述第一距离的比值为0.6~0.9。
- 根据权利要求3所述的显示装置,其中,所述发光板包括多个发光单元行,每个发光单元行包括至少两个沿所述第一方向排布的发光单元,所述多个发光单元行沿与所述第一方向垂直的方向排列,位于最边缘的发光单元行和与其紧邻的发光单元行中的所述两个发光单元之间的所述第一距离小于其他相邻两行发光单元行中的所述两个发光单元之间的所述第一距离;和/或,所述发光板包括多个发光单元列,每个发光单元列包括至少两个沿所述第二方向排布的发光单元,所述多个发光单元列沿与所述第二方向垂直的方向排列,位于最边缘的发光单元列和与其紧邻的发光单元列中的所述两个发光单元之间的所述第一距离小于其他相邻两列发光单元行中的所述两个发光单元之间的所述第一距离。
- 根据权利要求1-11任一项所述的显示装置,其中,任意两个相邻发光单元的中心连线经过该任意两个发光单元的彼此靠近的边缘上的两点之间的 距离不小于位于所述发光板的最边缘的所述发光单元与所述发光板的边沿之间的最小距离。
- 根据权利要求4所述的显示装置,其中,所述发光板与所述光扩散结构之间设置有多个支撑部,所述多个支撑部的连线至少构成平行于所述衬底基板的第一多边形和第二多边形,所述第二多边形围绕所述第一多边形,所述第一多边形包括多条第一对角线,所述第二多边形包括多条第二对角线,所述多条第一对角线的至少两条第一对角线经过所述发光板的几何中心,和/或,所述多条第二对角线的至少两条第二对角线经过所述发光板的几何中心。
- 根据权利要求13所述的显示装置,其中,所述支撑部在垂直于所述衬底基板的方向上的厚度小于所述第二距离。
- 根据权利要求4、13或14所述的显示装置,其中,所述θ的取值范围在20°-30°之间,D1/L的值为3~10。
- 根据权利要求5所述的显示装置,其中,所述发光单元被所述两个第一点的连线的延长线所截的截线尺寸为L,所述θ的取值范围在10°-25°之间,D1/L的值为5~11。
- 根据权利要求13或14所述的显示装置,其中,所述光扩散结构包括多个膜层,所述多个膜层之一的面积为S0,所述第一多边形的面积为S1,S0与S1满足:S0/S1≥16。
- 根据权利要求13或14所述的显示装置,其中,所述光扩散结构包括多个膜层,所述多个膜层之一的面积为S0,所述第二多边形的面积为S2,S0与S2满足:S0/S2≥2。
- 根据权利要求13或14所述的显示装置,其中,所述显示面板的平行于所述衬底基板的平面形状为四边形,所述显示面板的所述平面形状包括两条长边和两条短边,所述长边与所述短边交替连接;经过所述发光板的几何中心的所述第一对角线中长度最长的一条第一对角线与平行于所述长边的直线之间的夹角为第一夹角,所述第一夹角为经过所述发光板的几何中心的所述第一对角线与所述直线之间的多个夹角中最小的一个。
- 根据权利要求19所述的显示装置,其中,经过所述发光板的几何中心的所述第一对角线中长度最短的一条第一对角线与所述直线之间的夹角为第二夹角,所述第二夹角为经过所述发光板的几何中心的所述第一对角线与所 述直线之间的多个夹角中最大的一个。
- 根据权利要求13或14所述的显示装置,其中,所述发光板包括多个子发光板,每个子发光板上设置有至少一个支撑部。
- 根据权利要求21所述的显示装置,其中,与所述几何中心之间的距离相同且距离最小的至少两个支撑部分别位于不同子发光板上,且所述至少两个支撑部构成所述第一多边形的至少一个顶点。
- 根据权利要求21或22所述的显示装置,其中,每个子发光板上设置的至少一个支撑部构成所述第二多边形的顶点。
- 根据权利要求21-23任一项所述的显示装置,其中,每个子发光板面向所述光扩散结构的一侧设置有多个预留位,每个子发光板上的至少一个预留位中设置有所述支撑部。
- 根据权利要求24所述的显示装置,其中,所述预留位包括贯穿所述衬底基板的通孔。
- 根据权利要求24或25所述的显示装置,其中,所述衬底基板与所述光扩散结构之间设置有反射膜,所述反射膜包括多个第一开口,所述多个第一开口被配置为暴露所述多个预留位的至少部分预留位。
- 根据权利要求26所述的显示装置,其中,所述反射膜还包括多个第二开口,所述多个第二开口被配置为暴露所述多个发光单元的至少部分发光单元。
- 根据权利要求24-27任一项所述的显示装置,其中,不同子发光板上的所述多个预留位数目相同且相对位置关系相同。
- 根据权利要求26或27所述的显示装置,其中,所述反射膜包括两个子反射膜,且所述两个子反射膜之间设置有间隙,所述间隙被反射条覆盖。
- 根据权利要求26或27所述的显示装置,其中,所述反射膜包括两个子反射膜,且所述两个子反射膜部分交叠设置。
- 根据权利要求21所述的显示装置,其中,所述多个发光单元中的至少部分发光单元沿第一方向和第二方向阵列排布,所述第一方向与所述第二方向相交;所述多个子发光板沿所述第一方向和所述第二方向阵列排布,所述多个子发光板上的至少部分结构相对于所述几何中心呈中心对称分布。
- 根据权利要求31所述的显示装置,其中,所述至少部分结构包括所 述支撑部和驱动电路。
- 根据权利要求13或14所述的显示装置,其中,至少两个相邻的发光单元构成一个发光单元组,所述支撑部位于相邻发光单元组之间。
- 根据权利要求8所述的显示装置,其中,所述封装结构掺杂色转换材料。
- 根据权利要求4或5所述的显示装置,还包括:色转换层,位于所述光扩散结构与所述显示面板之间。
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CN117117065A (zh) * | 2022-05-16 | 2023-11-24 | 合肥京东方瑞晟科技有限公司 | 发光基板、背光模组及显示装置 |
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