WO2025152161A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置

Info

Publication number
WO2025152161A1
WO2025152161A1 PCT/CN2024/073301 CN2024073301W WO2025152161A1 WO 2025152161 A1 WO2025152161 A1 WO 2025152161A1 CN 2024073301 W CN2024073301 W CN 2024073301W WO 2025152161 A1 WO2025152161 A1 WO 2025152161A1
Authority
WO
WIPO (PCT)
Prior art keywords
protrusion
layer
display panel
light
driving backplane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/073301
Other languages
English (en)
French (fr)
Inventor
石博
宋江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to PCT/CN2024/073301 priority Critical patent/WO2025152161A1/zh
Priority to CN202480000070.9A priority patent/CN120677869A/zh
Publication of WO2025152161A1 publication Critical patent/WO2025152161A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays

Definitions

  • FMLOC Flexible Multi-Layer On Cell
  • a black matrix is introduced in the non-pixel area to absorb light.
  • the oblique outgoing light of the light-emitting device will be blocked by the black matrix, resulting in low utilization of the outgoing light and high power consumption of the display panel.
  • the purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and provide a display panel and a display device.
  • a display panel which includes a driving backplane, a pixel defining layer, a plurality of pixel electrodes, a plurality of light-emitting units of different colors, a common electrode, a first protective layer, a color filter layer and a reflective layer, wherein the pixel defining layer is arranged on one side of the driving backplane, and the pixel defining layer is provided with a plurality of pixel openings; a plurality of pixel electrodes are respectively arranged in different pixel openings; a plurality of light-emitting units of different colors are respectively arranged on a side of each of the pixel electrodes away from the driving backplane; a common electrode is arranged on a side of the plurality of light-emitting units away from the driving backplane; a first protective layer is arranged on a side of the common electrode away from the driving backplane, the first protective layer includes a first protective portion, and a slope angle of a side surface of
  • the black matrix is provided with a color resistance opening, and filter units of different colors are provided in the color resistance opening, and the orthographic projection of the filter unit of the same color on the driving backplane overlaps with the orthographic projection of the light-emitting unit of the same color on the driving backplane;
  • the reflective layer is provided between the black matrix and the first protective portion, and the reflective layer includes a first reflective portion, and the first reflective portion covers the side of the first protective portion; when the slope angle of the side of the first protective portion is greater than 90 degrees, part of the outgoing light of the light-emitting unit is directly reflected by the first reflective portion to the filter unit of the same color as the light-emitting unit, and when the slope angle of the side of the first protective portion is less than 90 degrees, part of the outgoing light of the light-emitting unit is reflected by the first reflective portion to the common electrode, and then reflected by the common electrode to the filter unit of the same color as the light-emitting unit.
  • a surface of the first protection portion away from the driving backplane is the first surface
  • the orthographic projection of the light emitting unit on the driving backplane is within the orthographic projection of the first surface of the driving backplane located at the first protection portion on the driving backplane.
  • the slope angle of the side surface of the first protecting portion when the slope angle of the side surface of the first protecting portion is less than 90 degrees, the slope angle of the side surface of the first protecting portion is between 40 degrees and 65 degrees.
  • the reflective layer further includes a second reflective portion, and the second reflective portion covers a side of the first protective portion away from the driving backplane.
  • a first protrusion is provided on a side of the pixel defining layer away from the driving backplane, the first protrusion is located near the pixel opening, at least one pair of first protrusions is provided around each pixel opening, each pair of first protrusions includes two first protrusions, and the reflected light of the second reflecting portion is reflected in sequence through the side surface of the first protrusion away from the pixel opening and the side surface of the first protrusion close to the pixel opening, and is emitted from the filtering unit.
  • the cross-sectional shape of the first protrusion is a trapezoidal protrusion, and the slope angle of the side surface of the first protrusion is 40 degrees to 65 degrees.
  • the cross-sectional shape of the first protrusion is an arc-shaped protrusion.
  • the height of the first protrusion is 0.5-2 times the thickness of the pixel defining layer
  • the width of the first protrusion on a side away from the driving backplane is 1-4 times the thickness of the pixel defining layer.
  • the first protection layer further includes a second protection portion, the second protection portion is connected between two adjacent first protection portions, and the second protection portion is away from a side of the driving backplane.
  • the second protecting portion is connected to the side surface of the first protecting portion, and the thickness of the second protecting portion is 0.25-0.5 times the thickness of the first protecting portion.
  • the display panel further includes a covering layer, which is disposed on a side of the color filter layer away from the driving backplane, and a side of the covering layer away from the driving backplane is a plane.
  • a second protrusion is provided on a side of the filter unit away from the driving back plate, and the second protrusion is provided on the reflection light path of the first protrusion close to the light-emitting unit in each pair of first protrusions.
  • the refractive index of the material of the filter unit is greater than the refractive index of the material of the covering layer.
  • the distance between a side of the second protrusion close to the driving backplane and the driving backplane is greater than the distance between a side of the black matrix away from the driving backplane and the driving backplane.
  • the first protrusion includes a closed first annular convex strip
  • the second protrusion includes a closed second annular convex strip
  • the second annular convex strip is located on the reflected light path of the first annular convex strip near the pixel opening
  • the shape of the second annular convex strip is similar to the shape of the first annular convex strip
  • a pair of first annular convex strips have their orthographic projections on the driving back plate located on the periphery of the orthographic projections of the second annular convex strips on the driving back plate.
  • the first protrusion includes a plurality of first protrusion units
  • the second protrusion includes a plurality of second protrusion units
  • at least one pair of second protrusion units are respectively provided on two sides away from each other of the two first protrusion units close to the pixel opening.
  • the first protrusion unit and the second protrusion unit are in the shape of long strips, and the second protrusion unit is parallel to the first protrusion unit.
  • the cross-section of the second protrusion is a triangular protrusion, and the slope angle of the side surface of the second protrusion is 40 degrees to 60 degrees.
  • the height of the second protrusion is 0.25-0.5 times the thickness of the filter unit, and the width of the second protrusion on a side close to the driving back plate is 1-2 times the thickness of the filter unit.
  • the cross-sectional shape of the second protrusion is an arc-shaped protrusion.
  • the display panel further includes a first touch-sensitive metal layer, a reflective The layer is provided in the same layer and with the same material as the first tactile metal layer.
  • the display panel further includes an encapsulation layer, and the encapsulation layer is disposed between the common electrode and the first protection layer.
  • the color of the pixel defining layer is black.
  • the orthographic projection of the first surface of the first protection portion on the driving backplane covers the orthographic projection of the same column of light-emitting units on the driving backplane.
  • a display device including the display panel provided in one aspect of the present disclosure.
  • FIG2 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure when a color filter layer is disposed on the light-emitting side of the light-emitting layer.
  • FIG. 7 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when the reflective layer includes a first reflective portion and a second reflective portion, and the slope angle of the side surface of the first protective portion is less than 90 degrees.
  • FIG. 9 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when a first protrusion is disposed on a surface of a pixel defining layer away from a driving backplane, and the cross-sectional shape of the first protrusion is a trapezoidal protrusion.
  • FIG. 10 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when a first protrusion is disposed on a surface of the pixel defining layer away from the driving backplane, and the cross-sectional shape of the first protrusion is an arc-shaped protrusion.
  • FIG. 12 is a schematic cross-sectional view of the display panel according to the embodiment of the present disclosure when the second protrusion is an arc-shaped protrusion and the cross-sectional shape of the first protrusion is a trapezoidal protrusion.
  • FIG. 13 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when the second protrusion is in the shape of a triangular protrusion and the cross-sectional shape of the first protrusion is in the shape of an arc-shaped protrusion.
  • FIG. 14 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when the second protrusion is in the shape of an arc-shaped protrusion and the cross-sectional shape of the first protrusion is in the shape of an arc-shaped protrusion.
  • first protrusion includes a closed first annular convex strip and the second protrusion includes a closed second annular convex strip.
  • 16 is a schematic plan view of a display panel according to an embodiment of the present disclosure when the first protrusion includes a plurality of first protrusion units and the second protrusion includes a plurality of second protrusion units.
  • 17 is a schematic plan view of the display panel according to the embodiment of the present disclosure when another second protrusion unit is disposed between two second protrusion units corresponding to two pairs of first protrusion units.
  • FIG. 20 is a schematic plan view of a display panel according to an embodiment of the present disclosure when the first protrusion includes both a first annular protrusion and a first protruding unit.
  • a polarizer 22 is usually arranged on the light-emitting side of the light-emitting layer 16 so that the display panel appears black when it is not bright.
  • the polarizer 22 causes the light intensity of the display panel to attenuate.
  • the polarizer 22 is arranged on the side of the light-emitting layer 16 away from the driving backplane 10, specifically on the side of the encapsulation layer 17 away from the driving backplane 10.
  • the polarizer 22 may include a polarizing functional layer 221, a phase difference layer 222 and a barrier layer 223.
  • the polarizing functional layer 221 can adjust the light into linear polarized light, and the material of the polarizing functional layer 221 may include liquid crystal.
  • the phase difference layer 222 may be a 1/4 ⁇ phase difference layer 222. After the linear polarized light is incident from the side of the phase difference layer 222 facing the polarizing functional layer 221 and passes through the phase difference layer 222, the linear polarized light can be converted into circular polarized light.
  • the material of the phase difference layer 222 may be a cycloolefin polymer, or other substances, which are not listed here in the present disclosure.
  • the barrier layer 223 can improve the physical and mechanical properties of the polarizer 22 and protect it from the influence of external water vapor.
  • a color film layer 19 is arranged on the light output side of the light-emitting layer 16 to replace the polarizer 22.
  • the color film layer 19 is still arranged on the side of the encapsulation layer 17 away from the driving backplane 10.
  • the color film layer 19 includes a black matrix 191 and a filter unit 192.
  • Most of the ambient light will be absorbed through the black matrix 191, and there will be no light intensity attenuation in the light output area of the light-emitting layer 16.
  • the output light will be directly emitted from the filter unit 192, thereby improving the light output gain of the display panel.
  • this will cause the output light of the light-emitting unit 162 with a larger oblique angle to be directly incident on the black matrix 191, resulting in a low utilization rate of the output light, which makes the display panel consume more power.
  • the pixel defining layer 15 is provided with a plurality of pixel openings 151; the plurality of pixel electrodes 161 are respectively disposed in different pixel openings 151; the plurality of light-emitting units 162 of different colors are respectively disposed in each pixel electrode.
  • the first protective layer 181 is located at a side of the common electrode 163 that is located at a side of the driving backplane 10; the first protective layer 181 is located at a side of the common electrode 163 that is located at a side of the driving backplane 10, the first protective layer 181 includes a first protective portion 1811, and the slope angle of the side of the first protective portion 1811 is greater than or less than 90 degrees; the color filter layer 19 includes a black matrix 191, the black matrix 191 covers the side of the first protective portion 1811, and a color resistance opening 1911 is provided on the black matrix 191, and the color filter layer 19 includes a black matrix 191, and the color filter layer 19 includes a black matrix 191, and the black matrix 191 includes a color resistance opening 1911, and the color filter layer 19 includes a black matrix 19 ...
  • the blocking opening 1911 is provided with filter units 192 of different colors, and the orthographic projection of the filter unit 192 of the same color on the driving backplane 10 overlaps with the orthographic projection of the light-emitting unit 162 of the same color on the driving backplane 10;
  • the reflective layer 20 is provided between the black matrix 191 and the first protection portion 1811, and the reflective layer 20 includes a first reflective portion 201, and the first reflective portion 201 covers the side of the first protection portion 1811, and part of the emitted light of the light-emitting unit 162 is reflected to the same color as the light-emitting unit 162.
  • the display panel may generally include a base substrate 11, a driving circuit layer 13, a planarization layer group 139, and a light emitting layer 16.
  • the driving circuit layer 13 is disposed on one side of the base substrate 11, the planarization layer group 139 is disposed on a side of the driving circuit layer 13 away from the base substrate 11, and the light emitting layer 16 is disposed on a side of the planarization layer group 139 away from the base substrate 11.
  • the display panel may further include a buffer layer 12, which is disposed between the base substrate 11 and the driving circuit layer 13.
  • the driving circuit layer 13 is provided with a driving circuit for driving the light-emitting unit 162.
  • the driving circuit is located in the display area, and any driving circuit may include a transistor, which may be a thin film transistor, which may be selected from a top-gate thin film transistor, a bottom-gate thin film transistor, or a dual-gate thin film transistor; taking a top-gate thin film transistor as an example, the driving circuit layer 13 may include a first active layer 131, a first gate electrode 1331 layer, a second gate electrode 1332 layer, a first gate insulating layer 1321, a second gate insulating layer 1322, and a first source-drain metal layer sequentially arranged in a direction away from the base substrate 11, wherein:
  • the first active layer 131 is disposed on one side of the base substrate 11.
  • the material of the first active layer 131 may be an amorphous silicon semiconductor material, a low-temperature polysilicon semiconductor material, a metal oxide semiconductor material, an organic semiconductor material or other types of semiconductor materials, so the thin film transistor may be an N-type thin film transistor or a P-type thin film transistor.
  • the first active layer 131 may include a channel region and two doping regions of different doping types located on both sides of the channel region.
  • the second gate insulating layer 1322 is provided at a side of the first gate 1331 away from the substrate 11, the second gate insulating layer 1322 may cover the first gate 1331 and the first gate insulating layer 1321, the second gate 1332 layer may include the second gate 1332, the second gate 1332 is provided at a side of the second gate insulating layer 1322 away from the substrate 11 and directly opposite to the active layer 131.
  • the materials of the first gate insulating layer 1321 and the second gate insulating layer 1322 are both insulating materials such as silicon oxide.
  • the thin film transistor may further include an interlayer dielectric layer 134, which is disposed on a side of the first gate electrode 1331 away from the substrate 11, and the interlayer dielectric layer 134 may cover the first gate electrode 1331 and the first gate insulating layer 1321.
  • the first source-drain metal layer is disposed on a surface of the interlayer dielectric layer 134 away from the substrate 11, and the first source-drain metal layer may include a first source electrode 135 and a drain electrode 136, which are connected to the first active layer 131, for example, the first source electrode 135 and the drain electrode 136 are respectively connected to the two doping regions of the corresponding first active layer 131 through vias.
  • a passivation layer may also be disposed on a side of the first source electrode 135 away from the substrate 11, and the passivation layer covers the first source electrode 135 and the drain electrode 136.
  • the driving circuit layer 13 may further include a second source-drain metal layer, a first planarization layer 1391, and a second planarization layer 1392.
  • the first planarization layer 1391 is provided on the side of the passivation layer away from the base substrate 11, and the first planarization layer 1391 covers the passivation layer.
  • the second source-drain metal layer is provided on the side of the first planarization layer 1391 away from the base substrate 11, and the surface of the first planarization layer 1391 away from the base substrate 11 is a plane.
  • the second source-drain metal layer may further include a second source electrode 138, and the second source electrode 138 is connected to the first source electrode 135.
  • the second planarization layer 1392 is provided on the side of the second source electrode 138 away from the base substrate 11, and the second planarization layer 1392 covers the second source electrode 138 and the first planarization layer 1391.
  • the pixel defining layer 15 is disposed on a side of the first planarizing layer 1391 or the second planarizing layer 1392 away from the array substrate.
  • the pixel defining layer 15 has a plurality of pixel openings 151, and the light emitting layer 16 may include a plurality of light emitting units 162, which are respectively disposed in different pixel openings 151, and each light emitting unit 162 may include a pixel electrode 161, a light emitting unit 162, and a common electrode 163.
  • the pixel electrode 161 is located on a surface of the first planarizing layer 1391 or the second planarizing layer 1392 away from the substrate 11, and the light emitting unit 162 is disposed on a surface of the pixel electrode 161 away from the substrate 11. 11, and the common electrode 163 is disposed on the surface of the light emitting unit 162 away from the base substrate 11.
  • the light emitting unit 162 can be driven to emit light through the pixel electrode 161 and the common electrode 163 to display an image.
  • the display panel of the present disclosure may further include an encapsulation layer 17, which is disposed on a side of the light-emitting layer 16 away from the base substrate 11, thereby encapsulating the light-emitting layer 16 to prevent water and oxygen corrosion.
  • the encapsulation layer 17 may be a single-layer or multi-layer structure, and the material of the encapsulation layer 17 may include organic or inorganic materials, which are not specifically limited here.
  • the display panel also includes a touch control layer 18, which may include a first protective layer 181 and a first touch metal layer 182.
  • the first protective layer 181 is arranged on a side of the encapsulation layer 17 away from the base substrate 11
  • the first touch metal layer 182 is arranged on a side of the first protective layer 181 away from the base substrate 11
  • the covering layer 21 is arranged on a side of the first touch metal layer 182 away from the base substrate 11.
  • the touch control layer 18 may be a mutual capacitive touch control layer.
  • the first protective layer 181 may further include a second protective layer 183 and a second tactile metal layer 184 .
  • the second tactile metal layer 184 is disposed between the encapsulation layer 17 and the first protective layer 181 .
  • the second covering layer 21 is disposed between the second tactile metal layer 184 and the encapsulation layer 17 .
  • the first touch-sensitive metal layer 182 may be a metal mesh layer (Metal Mesh, MM), and the second touch-sensitive metal layer 184 may be a bridging metal layer (Bridge Metal, BM).
  • the first touch-sensitive metal layer 182 may be a bridging metal layer (Bridge Metal, BM), and the second touch-sensitive metal layer 184 may be a metal mesh layer (Metal Mesh, MM).
  • a reflective layer 20 is provided between the black matrix 191 and the first protection portion 1811.
  • the reflective layer 20 and the first touch-sensitive metal layer 182 are provided in the same layer and made of the same material.
  • the reflective layer 20 and the first touch-sensitive metal layer 182 are intermittently distributed.
  • silver is preferably selected as the material of the reflective layer 20.
  • the reflective layer 20 includes a first reflective portion 201, and the first reflective portion 201 covers the side surface of the first protection portion 1811. Therefore, the inclination angle of the first reflective portion 201 relative to the side of the first protection layer 181 away from the base substrate 11 is the same as the slope angle of the side surface of the first protection portion 1811.
  • the slope angle of the side of the first protection portion 1811 is less than 90 degrees, so the first The inclination angle of the reflective portion 201 relative to the side of the first protective layer 181 away from the base substrate 11 is less than 90 degrees.
  • the inclination angle of the first reflective portion 201 relative to the side of the first protective layer 181 away from the base substrate 11 is less than 90 degrees, part of the emitted light of the light emitting unit 162 is reflected by the first reflective portion 201 to the common electrode 163, and then reflected by the common electrode 163 to the filter unit 192 which is opposite to the light emitting unit 162 and has the same color.
  • the slope angle is the angle between the side surface of the first protective portion 1811 and the side of the first protective layer 181 close to the base substrate 11.
  • the slope angle of the side of the first protective portion 1811 can also be greater than 90 degrees.
  • the inclination angle of the first reflecting portion 201 relative to the side of the first protective layer 181 away from the base substrate 11 is greater than 90 degrees.
  • part of the emitted light of the light-emitting unit 162 is directly reflected by the first reflecting portion 201 to the filter unit 192 which is opposite to the light-emitting unit 162 and has the same color as the light-emitting unit 162.
  • the side of the second protection portion 1812 away from the driving back plate 10 includes a first surface and a second surface, the second surface is located at both ends of the first surface, the second surface is connected to the side of the first protection portion 1811, and the second surface is inclined toward the side close to the driving back plate 10, so that a recessed portion is formed between the second surface of the second protection portion 1812 and the side of the first protection portion 1811, and the first reflection portion 201 extends into the recessed portion and contacts the second surface of the second protection portion 1812.
  • the reflective layer 20 may further include a second reflective portion 202, which covers a side of the first protection portion 1811 away from the driving backplane 10, and the second reflective portion 202 may be integrally formed with the first reflective portion 201.
  • the slope angle of the side surface of the first protection portion 1811 is greater than 90 degrees, the outgoing light is reflected by the first reflective portion 201 to a side of the second reflective portion 202 close to the base substrate 11, and then by the second reflective portion 202 close to the base substrate 11.
  • the light is reflected from one side of the common electrode 163 to the side away from the base substrate 11 , and finally reflected from the side of the common electrode 163 away from the base substrate 11 to the filter unit 192 which is opposite to the light emitting unit 162 and has the same color as the light emitting unit 162 .
  • the reflected light of the second reflecting portion 202 passes through the side of the first protrusion 152 away from the pixel opening 151 and the side of the first protrusion 152 close to the pixel opening 151 in turn, and is reflected from the filter unit 192 which is opposite to the light-emitting unit 162 and has the same color as the light-emitting unit, thereby further improving the light output efficiency of the display panel.
  • the side of the pixel defining layer 15 away from the driving backplane 10 may also be provided with two pairs of first protrusions 152 or three pairs of first protrusions 152, or even more, which are not listed here one by one, with the goal of maximizing the reflection of the reflected light of the second reflecting portion 202 to the filter unit 192 which is directly opposite to the light emitting unit 162 and has the same color as the light emitting unit 162. Because the common electrode 163 usually has a certain light transmittance, the color of the pixel defining layer 15 is set to black to prevent the ambient light from being reflected by the pixel defining layer 15 to the filter unit 192, and then emitted from the filter unit 192, which affects the contrast of the display panel.
  • the cross-sectional shape of the first protrusion 152 is a trapezoidal protrusion
  • the slope angle of the side of the first protrusion 152 is 40 degrees to 65 degrees
  • the width of the first protrusion 152 away from the driving back plate 10 is 1 to 4 times the thickness of the pixel defining layer
  • the height of the first protrusion 152 is 0.5 to 2 times the thickness of the pixel defining layer 15.
  • the height of the first protrusion 152 is 1um to 2um
  • the width of the first protrusion 152 away from the driving back plate 10 is 1um to 3um.
  • the distance between two adjacent first protrusions 152 is set to be greater than 3um.
  • the display panel may further include a covering layer 21, which is disposed on the side of the color filter layer 19 away from the driving backplane 10, and the side of the covering layer 21 away from the driving backplane 10 is a plane. It can be seen that the final emission angle of the emitted light used by the reflective layer 20 has a certain angle with the vertical line of the surface of the filter unit 192, and is not perpendicular to the surface of the light emitting unit 162, resulting in the emitted light The utilization rate of the line is still not high, so it is necessary to further improve the utilization rate of the outgoing light.
  • the cross section of the second protrusion 1924 is a triangular protrusion
  • the slope angle of the side of the second protrusion 1924 is 40 degrees to 60 degrees
  • the height of the second protrusion 1924 is 0.25 to 0.5 times the thickness of the filter unit 192
  • the width of the side of the second protrusion 1924 close to the base substrate 11 is 1 to 2 times the thickness of the filter unit 192.
  • the height of the second protrusion 1924 may be 1 ⁇ m to 2 ⁇ m
  • the width of the side of the second protrusion 1924 close to the base substrate 11 may be 3 ⁇ m to 5 ⁇ m.
  • the cross-sectional shape of the second protrusion 1924 may also be an arc-shaped protrusion.
  • the cross-sectional shape of the second protrusion 1924 is an arc-shaped protrusion
  • the refracted light of the second protrusion 1924 is not all emitted along the surface perpendicular to the filter unit 192, and there are also some oblique refracted light.
  • the second protrusion 1924 protrudes from the side of the black matrix 191 away from the base substrate 11, which can well avoid the oblique refracted light from being blocked by the black matrix 191.
  • the shape of the second protrusion 1924 and the shape of the first protrusion 152 there are many combinations of the shape of the second protrusion 1924 and the shape of the first protrusion 152.
  • the cross-sectional shape of the second protrusion 1924 is a triangle
  • the cross-sectional shape of the first protrusion 152 is a trapezoidal protrusion.
  • the shape of the second protrusion 1924 is an arcuate protrusion
  • the cross-sectional shape of the first protrusion 152 is a trapezoidal protrusion.
  • the shape of the second protrusion 1924 is a triangular protrusion
  • the cross-sectional shape of the first protrusion 152 is an arcuate protrusion.
  • the shape of the second protrusion 1924 is an arc-shaped protrusion
  • the cross-sectional shape of the first protrusion 152 is an arc-shaped protrusion.
  • the first protrusion 152 may include a closed first annular convex strip
  • the second protrusion 1924 may include a closed second annular convex strip
  • the second annular convex strip is located on the reflected light path of the first annular convex strip near the pixel opening 151
  • the shape of the second annular convex strip is similar to the shape of the first annular convex strip
  • a pair of first annular convex strips have their positive projections on the driving back plate 10 located on the periphery of the positive projections of the second annular convex strips on the driving back plate 10.
  • another second protruding unit may be provided between the two second protruding units corresponding to the two pairs of first protruding units, and the second protruding unit may collimate the outgoing light normally emitted from the light-emitting unit 162 from the light-filtering unit 192, so that the light-emitting unit 162 is emitted in a direction perpendicular to the surface of the light-filtering unit 192.
  • the cross-sectional shape of the second protruding unit may be a triangular protrusion
  • the cross-sectional shape of the second protruding unit may be an arc-shaped protrusion.
  • another second annular protruding strip may be provided on the inner side of the two second annular protruding strips corresponding to the two first annular protruding strips, so as to collimate the outgoing light normally emitted from the light-emitting unit 162 from the light-filtering unit 192.
  • the first protrusion 152 can include a first annular protrusion and a first protrusion unit at the same time
  • the second protrusion 1924 can include a second annular protrusion and a second protrusion unit at the same time
  • the first protrusion unit can be symmetrically arranged on both sides of the first annular protrusion
  • the second protrusion unit can be symmetrically arranged on both sides of the second annular protrusion.
  • the embodiment of the present disclosure also provides a display device, which may include the display panel of any one of the embodiments of the present disclosure.
  • a display device which may include the display panel of any one of the embodiments of the present disclosure.
  • the specific structure and beneficial effects of the display panel have been described in detail above, so they will not be repeated here.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种显示面板,该显示面板包括反射层(20),反射层(20)包括第一反射部(201),第一反射部(201)覆盖第一保护部(1811)的侧面,当第一保护部(1811)侧面的坡度角大于90度时,发光单元(162)的部分出射光线被第一反射部(201)直接反射至与发光单元(162)的颜色相同的滤光单元(192),当第一保护部(1811)侧面的坡度角小于90度时,发光单元(162)的部分出射光线被第一反射部(201)反射至公共电极(163)后,再被公共电极(163)反射至与发光单元(162)的颜色相同的滤光单元(192)。将被黑矩阵(191)遮挡的部分出射光线利用起来,可以提高出光效率,降低显示面板的功耗。还提供一种包括上述显示面板的显示装置。

Description

显示面板及显示装置 技术领域
本公开涉及显示技术领域,具体而言,涉及一种显示面板及显示装置。
背景技术
FMLOC(Flexible Multi-Layer On Cell)设计目前在OLED触控显示领域已是主流。FMLOC设计是指在显示基板的封装层上制作金属电极层,金属电极层的表面对环境光反射显著。
为减小环境光反射提高对比度,在非像素区引入黑矩阵吸光,但是发光器件斜向的出射光线会被黑矩阵遮挡,导致出射光线的利用率较低,使得显示面板的功耗较大。
需要说明的是,在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解,因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
公开内容
本公开的目的在于克服上述现有技术的不足,提供一种显示面板及显示装置。
根据本公开的一个方面,提供一种显示面板,该显示面板包括驱动背板、像素界定层、多个像素电极、不同颜色的多个发光单元、公共电极、第一保护层、彩膜层和反射层,像素界定层设于所述驱动背板的一侧,所述像素界定层设有多个像素开口;多个像素电极分别设于不同的像素开口内;不同颜色的多个发光单元分别设于各所述像素电极远离所述驱动背板的一侧;公共电极设于所述多个发光单元远离所述驱动背板的一侧;第一保护层设于所述公共电极远离所述驱动背板的一侧,所述第一保护层包括第一保护部,所述第一保护部侧面的坡度角大于或小于90度;彩膜层包括黑矩阵,所述黑矩阵覆盖所述第一保护部的侧面,所 述黑矩阵上设有色阻开口,所述色阻开口内设有不同颜色的滤光单元,同一颜色的所述滤光单元在所述驱动背板上的正投影与同一颜色的所述发光单元在所述驱动背板上的正投影交叠;反射层设于所述黑矩阵与所述第一保护部之间,所述反射层包括第一反射部,所述第一反射部覆盖所述第一保护部的侧面;当所述第一保护部侧面的坡度角大于90度时,发光单元的部分出射光线被所述第一反射部直接反射至与所述发光单元的颜色相同的滤光单元,当所述第一保护部侧面的坡度角小于90度时,所述发光单元的部分出射光线被所述第一反射部反射至所述公共电极后,再被所述公共电极反射至与所述发光单元的颜色相同的滤光单元。
在本公开的一个实施例中,第一保护部远离驱动背板的一面为第一面,发光单元在驱动背板上的正投影在驱动背板位于第一保护部的第一面在驱动背板上的正投影内。
在本公开的一个实施例中,当第一保护部侧面的坡度角小于90度时,第一保护部侧面的坡度角介于40度至65度之间。
在本公开的一个实施例中,反射层还包括第二反射部,第二反射部覆盖第一保护部远离驱动背板的一面。
在本公开的一个实施例中,当第一保护部侧面的坡度角小于90度时,像素界定层远离驱动背板的一面设有第一凸起,第一凸起位于靠近像素开口设置,每个像素开口外围设有至少一对第一凸起,每对第一凸起包括两个第一凸起,第二反射部的反射光线依次经过远离像素开口的第一凸起的侧面,以及靠近像素开口的第一凸起的侧面反射,从滤光单元出射。
在本公开的一个实施例中,第一凸起的截面形状为梯形凸起,第一凸起的侧面的坡度角为40度-65度。
在本公开的一个实施例中,第一凸起的截面形状为弧形凸起。
在本公开的一个实施例中,第一凸起的高度为像素界定层的厚度的0.5-2倍,第一凸起远离驱动背板的一面的宽度为像素界定层的厚度的1-4倍。
在本公开的一个实施例中,第一保护层还包括第二保护部,第二保护部连接于相邻两个第一保护部之间,第二保护部远离驱动背板的一面 与第一保护部的侧面相连,第二保护部的厚度为第一保护部的厚度的0.25-0.5倍。
在本公开的一个实施例中,第二保护部远离驱动背板的一面包括第一面和第二面,第二保护部的第二面位于第一面的两端,第二保护部的第二面与第一保护部的侧面相连,第二保护部的第二面向靠近驱动背板的一侧倾斜,第一反射部延伸至与第二保护部的第二面接触。
在本公开的一个实施例中,显示面板还包括覆盖层,覆盖层设于彩膜层远离驱动背板的一侧,覆盖层远离驱动背板的一面为平面。
在本公开的一个实施例中,滤光单元远离驱动背板的一面设有第二凸起,第二凸起设于每对第一凸起中靠近发光单元的第一凸起的反射光路上,滤光单元的材料的折射率大于覆盖层的材料的折射率,出射光线在经过第二凸起的侧面与覆盖层的界面后,出射光线的出射角度变小。
在本公开的一个实施例中,第二凸起靠近驱动背板的一侧与驱动背板之间的距离,大于黑矩阵远离驱动背板的一侧与驱动背板之间的距离。
在本公开的一个实施例中,第一凸起包括封闭的第一环形凸条,第二凸起包括封闭的第二环形凸条,第二环形凸条位于靠近像素开口的第一环形凸条的反射光路上,第二环形凸条的形状与第一环形凸条的形状相似,一对第一环形凸条在驱动背板上的正投影位于第二环形凸条在驱动背板上的正投影的外围。
在本公开的一个实施例中,第一凸起包括多个第一凸出单元,第二凸起包括多个第二凸出单元,靠近像素开口的两个第一凸出单元的相互远离的两侧分别设有至少一对第二凸出单元,第一凸出单元和第二凸出单元的形状为长条形,第二凸出单元与第一凸出单元相互平行。
在本公开的一个实施例中,第二凸起的截面为三角形凸起,第二凸起的侧面的坡度角为40度-60度。
在本公开的一个实施例中,第二凸起的高度为滤光单元的厚度的0.25-0.5倍,第二凸起靠近驱动背板的一侧的宽度为滤光单元的厚度的1-2倍。
在本公开的一个实施例中,第二凸起的截面形状为弧形凸起。
在本公开的一个实施例中,显示面板还包括第一触感金属层,反射 层与第一触感金属层同层同材料设置。
在本公开的一个实施例中,显示面板还包括封装层,封装层设于公共电极与第一保护层之间。
在本公开的一个实施例中,像素界定层的颜色为黑色。
在本公开的一个实施例中,第一保护部的第一面在驱动背板上的正投影覆盖同一列发光单元驱动背板上的正投影。
根据本公开的另一个方面,提供一种显示装置,包括本公开一个方面所提供的显示面板。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本公开的实施例,并与说明书一起用于解释本公开的原理。显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为在发光层的出光侧设置偏光片时,本公开实施例涉及的一种显示面板的截面示意图。
图2为在发光层的出光侧设置彩膜层时,本公开实施例涉及的一种显示面板的截面示意图。
图3为黑矩阵与第一保护部之间设置第一反射部,且触感控制层仅包括第一触感金属层时,本公开实施例涉及的显示面板的截面示意图。
图4为黑矩阵与第一保护部之间设置第一反射部,且触感控制层包括第一触感金属层和第二触感金属层时,本公开实施例涉及的显示面板的截面示意图。
图5为黑矩阵与第一保护部之间设置第一反射部,且第一保护部侧面的坡度角小于90度时,本公开实施例涉及的显示面板的截面示意图。
图6为黑矩阵与第一保护部之间设置第一反射部,且第一保护部侧面的坡度角大于90度时,本公开实施例涉及的显示面板的截面示意图。
图7为反射层包括第一反射部和第二反射部,且第一保护部侧面的坡度角小于90度时,本公开实施例涉及的显示面板的截面示意图。
图8为反射层包括第一反射部和第二反射部,且第一保护部侧面的坡度角大于90度时,本公开实施例涉及的显示面板的截面示意图。
图9为像素界定层远离驱动背板的一面设有第一凸起,且第一凸起的截面形状为梯形凸起时,本公开实施例涉及的显示面板的截面示意图。
图10为像素界定层远离驱动背板的一面设有第一凸起,且第一凸起的截面形状为弧形凸起时,本公开实施例涉及的显示面板的截面示意图。
图11为第二凸起的截面形状为三角形,第一凸起的截面形状为梯形凸起时,本公开实施例涉及的显示面板的截面示意图。
图12为第二凸起的形状为弧形凸起,第一凸起的截面形状为梯形凸起时,本公开实施例涉及的显示面板的截面示意图。
图13为第二凸起的形状为三角形凸起,第一凸起的截面形状为弧形凸起时,本公开实施例涉及的显示面板的截面示意图。
图14为第二凸起的形状为弧形凸起,第一凸起的截面形状为弧形凸起时,本公开实施例涉及的显示面板的截面示意图。
图15为第一凸起包括封闭的第一环形凸条,第二凸起包括封闭的第二环形凸条时,本公开实施例涉及的显示面板的平面示意图。
图16为第一凸起包括多个第一凸出单元,第二凸起包括多个第二凸出单元时,本公开实施例涉及的显示面板的平面示意图。
图17为在与两对第一凸出单元对应的两个第二凸出单元之间设置另一个第二凸出单元时,本公开实施例涉及的显示面板的平面示意图。
图18为第二凸出单元的截面形状为三角形凸起时,本公开实施例涉及的像素界定层和彩膜层的立体结构图。
图19为第二凸出单元的截面形状为弧形凸起时,本公开实施例涉及的像素界定层和彩膜层的立体结构图。
图20为第一凸起同时包括第一环形凸条和第一凸出单元时,本公开实施例涉及的显示面板的平面示意图。
附图标记说明:
10-驱动背板,11-衬底基板,12-缓冲层;
13-驱动电路层,131-有源层,1321-第一栅绝缘层,1322-第二栅绝
缘层,1331-第一栅极,1332-第二栅极,134-层间介质层,135-第一源极,136-漏极,137-保护层,138-第二源极;
139-平坦化层组,1391-第一平坦化层,1392-第二平坦化层;
15-像素界定层,151-像素开口,152-第一凸起;
16-发光层,161-像素电极,162-发光单元,163-公共电极,1631-第
三凸起;
17-封装层,171-第一无机封装层,172-有机封装层,173-第二无机
封装层;
18-触感控制层,181-第一保护层,1811-第一保护部,1812-第二保
护部,1813-凹槽,182-第一触感金属层,183-第二保护层,184-第二触感金属层;
19-彩膜层,191-黑矩阵,1911-色阻开口,192-滤光单元,1921-红
色滤光单元,1922-绿色滤光单元,1923-蓝色滤光单元,1924-第二凸起;
20-反射层,201-第一反射部,202-第二反射部;
21-覆盖层;
22-偏光片,221-偏光功能层,222-相位差层,223-隔挡层。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而,示例实施方式能够以多种形式实施,且不应被理解为限于在此阐述的实施方式;相反,提供这些实施方式使得本公开将全面和完整,并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构,因而将省略它们的详细描述。此外,附图仅为本公开的示意性图解,并非一定是按比例绘制。
虽然本说明书中使用相对性的用语,例如“上”“下”来描述图标的一个组件对于另一组件的相对关系,但是这些术语用于本说明书中仅出于方便,例如根据附图中所述的示例的方向。能理解的是,如果将图标的装置翻转使其上下颠倒,则所叙述在“上”的组件将会成为在“下”的组件。当某结构在其它结构“上”时,有可能是指某结构一体形成于其它结构上, 或指某结构“直接”设置在其它结构上,或指某结构通过另一结构“间接”设置在其它结构上。
用语“一个”、“一”、“该”、“所述”和“至少一个”用以表示存在一个或多个要素/组成部分/等;用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等;用语“第一”、“第二”和“第三”等仅作为标记使用,不是对其对象的数量限制。
如图1所示,为了提高显示面板的对比度,减少反射光,通常会在发光层16的出光侧设置偏光片22,以使得显示面板不亮的时候看起来是黑色的,然而偏光片22会引起显示面板的光强发生衰减。偏光片22设于发光层16远离驱动背板10的一侧,具体是位于封装层17远离驱动背板10的一侧,偏光片22可以包括偏光功能层221、相位差层222和隔挡层223,相位差层222设于封装层17远离驱动背板10的一侧,偏光功能层221设于相位差层222远离驱动背板10的一侧,隔挡层223设于偏光功能层221远离驱动背板10的一侧。
该偏光功能层221可以将光线调整为线偏振光,该偏光功能层221的材料可以包括液晶。该相位差层222可以为1/4λ相位差层222,在线偏振光从相位差层222面向偏光功能层221的一侧入射并通过相位差层222后,该线偏振光能够变换为圆偏振光。该相位差层222的材料可以为环烯烃聚合物,当然也可以为其它物质,本公开在此不再一一列举。隔挡层223可起到提高偏光片22的物理机械特性,又隔绝外界水汽影响的保护作用。
如图2所示,为了提升出光增益,在发光层16的出光侧设置彩膜层19替代偏光片22,彩膜层19仍然设于封装层17远离驱动背板10的一侧,彩膜层19包括黑矩阵191和滤光单元192,将通过黑矩阵191吸收大部分环境光,并且在发光层16的出光区域无光强衰减,出射光线直接从滤光单元192出射,从而提升显示面板的出光增益,但这样会使得发光单元162斜向角度较大的出射光线直接入射至黑矩阵191上,导致出射光线的利用率较低,使得显示面板的功耗较大。
为了提高发光单元162出射光线的利用率,本公开实施方式提供了 一种显示面板。如图3至图17所示,该显示面板包括驱动背板10、像素界定层15、多个像素电极161、不同颜色的多个发光单元162、公共电极163、第一保护层181、彩膜层19和反射层20,像素界定层15设于驱动背板10的一侧,像素界定层15设有多个像素开口151;多个像素电极161分别设于不同的像素开口151内;不同颜色的多个发光单元162分别设于各像素电极161远离驱动背板10的一侧;公共电极163设于多个发光单元162远离驱动背板10的一侧;第一保护层181设于公共电极163远离驱动背板10的一侧,第一保护层181包括第一保护部1811,第一保护部1811侧面的坡度角大于或小于90度;彩膜层19包括黑矩阵191,黑矩阵191覆盖第一保护部1811的侧面,黑矩阵191上设有色阻开口1911,色阻开口1911内设有不同颜色的滤光单元192,同一颜色的滤光单元192在驱动背板10上的正投影与同一颜色的发光单元162在驱动背板10上的正投影交叠;反射层20设于黑矩阵191与第一保护部1811之间,反射层20包括第一反射部201,第一反射部201覆盖第一保护部1811的侧面,发光单元162的部分出射光线被反射至与发光单元162的颜色相同的滤光单元192;当第一保护部1811侧面的坡度角大于90度时,发光单元162的部分出射光线被第一反射部201直接反射至与发光单元162的颜色相同的滤光单元192,当第一保护部1811侧面的坡度角小于90度时,发光单元162的部分出射光线被第一反射部201反射至公共电极163后,再被公共电极163反射至与发光单元162的颜色相同的滤光单元192。
反射层20设于黑矩阵191与第一保护部1811之间,反射层20包括第一反射部201,第一反射部201覆盖第一保护部1811的侧面,当第一保护部1811侧面的坡度角大于90度时,发光单元162的部分出射光线被第一反射部201直接反射至与发光单元162的颜色相同的滤光单元192,当第一保护部1811侧面的坡度角小于90度时,发光单元162的部分出射光线被第一反射部201反射至公共电极163后,再被公共电极163反射至与发光单元162的颜色相同的滤光单元192。将被黑矩阵191遮挡的部分出射光线利用起来,可以提高出光效率,降低显示面板的功耗。
下面结合具体的实施例对本公开所涉及的显示面板进行详细说明。
下面结合具体的实施例对本公开实施方式所涉及的显示面板进行详细说明。
如图3所示,显示面板一般可以包括衬底基板11、驱动电路层13、平坦化层组139和发光层16,驱动电路层13设于衬底基板11的一侧,平坦化层组139设于驱动电路层13远离衬底基板11的一侧,发光层16设于平坦化层组139远离衬底基板11的一侧。另外,显示面板还可以包括缓冲层12,缓冲层12设于衬底基板11与驱动电路层13之间。
衬底基板11可以为无机材料的衬底基板11,也可以为有机材料的衬底基板11。举例而言,在本公开的一种实施方式中,衬底基板11的材料可以为钠钙玻璃(soda-lime glass)、石英玻璃、蓝宝石玻璃等玻璃材料,或者可以为不锈钢、铝、镍等金属材料。
在本公开的另一种实施方式中,衬底基板11也可以为柔性衬底基板11,例如衬底基板11的材料可以为聚酰亚胺(polyimide,PI)。衬底基板11还可以为多层材料的复合,举例而言,在本公开的一种实施方式中,衬底基板11可以包括依次层叠设置的底膜层(Bottom Film)、压敏胶层、第一聚酰亚胺层和第二聚酰亚胺层。
驱动电路层13设置有用于驱动发光单元162的驱动电路。驱动电路位于显示区,任意一个驱动电路可以包括晶体管,晶体管可以为薄膜晶体管,薄膜晶体管可以选自顶栅型薄膜晶体管、底栅型薄膜晶体管或者双栅型薄膜晶体管;以顶栅型薄膜晶体管为例,驱动电路层13可包括沿远离衬底基板11的方向依次设置的第一有源层131、第一栅极1331层、第二栅极1332层、第一栅绝缘层1321、第二栅绝缘层1322、第一源漏金属层,其中:
第一有源层131设于衬底基板11的一侧,第一有源层131的材料可以为非晶硅半导体材料、低温多晶硅半导体材料、金属氧化物半导体材料、有机半导体材料或者其他类型的半导体材料,因此薄膜晶体管可以为N型薄膜晶体管或者P型薄膜晶体管。第一有源层131可包括沟道区和位于沟道区两侧的两个不同掺杂类型的掺杂区。
第一栅绝缘层1321设于有源层131远离衬底基板11的一侧,第一栅绝缘层1321可覆盖有源层131和衬底基板11,第一栅极1331层可以 包括第一栅极1331,第一栅极1331设于第一栅绝缘层1321远离衬底基板11的一侧,且与有源层131正对,即第一栅极1331在衬底基板11上的投影位于有源层131在衬底基板11的投影范围内,例如,第一栅极1331在衬底基板11上的投影与有源层131的沟道区在衬底基板11的投影重合。第二栅绝缘层1322设于第一栅极1331远离衬底基板11的一侧,第二栅绝缘层1322可覆盖第一栅极1331和第一栅绝缘层1321,第二栅极1332层可以包括第二栅极1332,第二栅极1332设于第二栅绝缘层1322远离衬底基板11的一侧,且与有源层131正对。第一栅绝缘层1321和第二栅绝缘层1322的材料均为氧化硅等绝缘材料。
薄膜晶体管还可以包括层间介质层134,层间介质层134设于第一栅极1331远离衬底基板11的一侧,层间介质层134可覆盖第一栅极1331和第一栅绝缘层1321。第一源漏金属层设于层间介质层134远离衬底基板11的表面,且第一源漏金属层可以包括第一源极135和漏极136,第一源极135和漏极136与第一有源层131连接,例如,第一源极135和漏极136分别通过过孔与对应的第一有源层131的两个掺杂区连接。还可以在第一源极135远离衬底基板11的一侧设钝化层,钝化层覆盖第一源极135和漏极136。
驱动电路层13还可以包括第二源漏金属层、第一平坦化层1391和第二平坦化层1392,钝化层远离衬底基板11的一侧设第一平坦化层1391,第一平坦化层1391覆盖钝化层,第一平坦化层1391远离衬底基板11的一侧设置第二源漏金属层,且第一平坦化层1391远离衬底基板11的表面为平面。第二源漏金属层还可以包括第二源极138,第二源极138与第一源极135连接。第二源极138远离衬底基板11的一侧设第二平坦化层1392,第二平坦化层1392覆盖第二源极138和第一平坦化层1391。
像素界定层15设置于第一平坦化层1391或第二平坦化层1392远离阵列基板的一侧。像素界定层15具有多个像素开口151,发光层16可以包括多个发光单元162,多个发光单元162分别设于不同的像素开口151内,每个发光单元162可以包括像素电极161、发光单元162和公共电极163,像素电极161位于第一平坦化层1391或第二平坦化层1392远离衬底基板11的表面,发光单元162设于像素电极161远离衬底基板 11的表面,公共电极163设于发光单元162远离衬底基板11的表面。通过像素电极161和公共电极163可驱动发光单元162发光,以显示图像。
像素电极161与第一源极135或第二源极138连接。像素电极161远离衬底基板11的一侧设像素界定层15。当薄膜晶体管仅包括第一源极135时,像素电极161与第一源极135连接,像素界定层15覆盖像素电极161、第一平坦化层1391。当薄膜晶体管还包括第二源极138时,像素电极161与第二源极138连接,像素界定层15覆盖像素电极161和第二平坦化层1392。
公共电极163可作为阴极,像素电极161可作为阳极,可通过向像素电极161施加信号驱动发光单元162发光,具体发光原理在此不再详述。发光单元162可包含电致有机发光材料,并可采用蒸镀等工艺形成。例如,发光单元162可包括依次层叠于像素电极161上的空穴注入层、空穴传输层、光产生层、电子传输层和电子注入层。需要说明的是,发光单元162根据发光颜色的不同,可以包括红色发光单元162、绿色发光单元162和蓝色发光单元162。
此外,本公开的显示面板还可包括封装层17,封装层17设于发光层16远离衬底基板11的一侧,从而将发光层16包覆起来,防止水氧侵蚀。封装层17可为单层或多层结构,封装层17的材料可包括有机或无机材料,在此不做特殊限定。
在本实施例中,封装层17可以包括第一无机封装层171、有机封装层172和第二无机封装层173,第一无机封装层171设于发光层16远离衬底基板11的一侧,有机封装层172设于第一无机封装层171远离衬底基板11的一侧,第二无机封装层173设于有机封装层172远离衬底基板11的一侧。
显示面板还包括触感控制层18,触感控制层18可以包括第一保护层181和第一触感金属层182,第一保护层181设于封装层17远离衬底基板11的一侧,第一保护层181远离衬底基板11的一侧设置第一触感金属层182,第一触感金属层182远离衬底基板11的一侧设有覆盖层21。
如图4所示,触感控制层18可以为互容式触感控制,触感控制层 18还可以包括第二保护层183和第二触感金属层184,第二触感金属层184设于封装层17与第一保护层181之间,第二覆盖层21设于第二触感金属层184与封装层17之间。
第一触感金属层182可以为金属网格层(Metal Mesh,MM),第二触感金属层184可以为桥接金属层(Bridge Metal,BM),第一触感金属层182也可以为桥接金属层(Bridge Metal,BM),第二触感金属层184可以为金属网格层(Metal Mesh,MM)。
第一保护层181可以包括第一保护部1811和第二保护部1812,第二保护部1812远离驱动背板10的一面与第一保护部1811的侧面相连,第二保护部1812的厚度为第一保护部1811的厚度的0.25-0.5倍,因为第二保护部1812的厚度小于第一保护部1811的厚度,因此可以在相邻两个第一保护部1811之间形成凹槽1813。在本实施例中,第一保护部1811的厚度为1um-4um。
如图3和图4所示,显示面板还包括彩膜层19,彩膜层19包括黑矩阵191,黑矩阵191设于凹槽1813内,自第二保护部1812远离衬底基板11的一面,延伸至覆盖第一保护部1811的侧面,黑矩阵191上设有色阻开口1911,色阻开口1911在衬底基板11上的正投影位于第一保护部1811在衬底基板11上的正投影内,色阻开口1911内设有不同颜色的滤光单元192,滤光单元192填充色阻开口1911,且搭接于黑矩阵191位于色阻开口1911外围的区域上。不同颜色的滤光单元192可以包括红色滤光单元1921、绿色滤光单元1922和蓝色滤光单元1923,同一颜色的滤光单元192在驱动背板10上的正投影与同一颜色的发光单元162在驱动背板10上的正投影交叠。
黑矩阵191与第一保护部1811之间设有反射层20,反射层20与第一触感金属层182同层同材料设置,反射层20与第一触感金属层182间断分布,考虑到反射率,反射层20的材料优先选银。反射层20包括第一反射部201,第一反射部201覆盖第一保护部1811的侧面,因此第一反射部201相对于第一保护层181远离衬底基板11的一面的倾斜角度与第一保护部1811侧面的坡度角相同。
如图5所示,第一保护部1811侧面的坡度角小于90度,因此第一 反射部201相对于第一保护层181远离衬底基板11的一面的倾斜角度小于90度,当第一反射部201相对于第一保护层181远离衬底基板11的一面的倾斜角度小于90度时,发光单元162的部分出射光线被第一反射部201反射至公共电极163后,再被公共电极163反射至与发光单元162正对且颜色相同的滤光单元192。需要说明的是,坡度角为第一保护部1811侧面与第一保护层181靠近衬底基板11的一面之间的夹角。
如图6所示,第一保护部1811侧面的坡度角也可以大于90度,此时第一反射部201相对于第一保护层181远离衬底基板11的一面的倾斜角度大于90度,当第一反射部201相对于第一保护层181远离衬底基板11的一面的倾斜角度大于90度时,发光单元162的部分出射光线被第一反射部201直接反射至与发光单元162正对且颜色相同的滤光单元192。
第一保护部1811远离驱动背板10的一面为第一面,为了保证发光单元162外围的出射光线也能入射至第一反射部201上,发光单元162在驱动背板10上的正投影在驱动背板10位于第一保护部1811的第一面在驱动背板10上的正投影内。当第一保护部1811侧面的坡度角小于90度时,可以设置第一保护部1811侧面的坡度角介于40度至65度之间,以使得第一保护部1811能将更多的出射光线反射至公共电极163远离衬底基板11的一侧。
为了防止第一反射部201形成于第二保护部1812远离衬底基板11的一面,第二保护部1812远离驱动背板10的一面包括第一面和第二面,第二面位于第一面的两端,第二面与第一保护部1811的侧面相连,第二面向靠近驱动背板10的一侧倾斜,使得第二保护部1812的第二面与第一保护部1811的侧面之间形成凹陷部,第一反射部201延伸至凹陷部内,并与第二保护部1812第二面接触。
如图7和图8所示,反射层20还可以包括第二反射部202,第二反射部202覆盖第一保护部1811的远离驱动背板10的一面,第二反射部202可以与第一反射部201一体成型。如图8所示,当第一保护部1811侧面的坡度角大于90度时,出射光线经第一反射部201反射至第二反射部202靠近衬底基板11的一面,再由第二反射部202靠近衬底基板11 的一面反射至公共电极163远离衬底基板11的一面,最后由公共电极163远离衬底基板11的一面反射至与发光单元162正对且颜色相同的滤光单元192。
如图9和图10所示,当第一保护部1811侧面的坡度角小于90度时,像素界定层15远离驱动背板10的一面设有第一凸起152,第一凸起152位于靠近像素开口151设置,每个像素开口151外围设有一对第一凸起152,每对第一凸起152包括两个第一凸起152,第二反射部202的反射光线依次经过远离像素开口151的第一凸起152的侧面,以及靠近像素开口151的第一凸起152的侧面反射,从与发光单元162正对且颜色相同的滤光单元192出射,进一步提高了显示面板的出光效率。
像素界定层15远离驱动背板10的一面也可以设置两对第一凸起152或三对第一凸起152,甚至更多,在此不一一进行列举,以能最大化地将第二反射部202的反射光线反射至与发光单元162正对且颜色相同的滤光单元192为目标。因为公共电极163通常具有一定的透光率,因此将像素界定层15的颜色设置为黑色,避免环境光被像素界定层15反射至滤光单元192,从滤光单元192出射,影响显示面板的对比度。
如图9所示,第一凸起152的截面形状为梯形凸起,第一凸起152的侧面的坡度角为40度-65度,第一凸起152远离驱动背板10的一面的宽度为像素界定层15的厚度的1-4倍,第一凸起152的高度为像素界定层15的厚度的0.5-2倍。在本实施例中,第一凸起152的高度为1um-2um,第一凸起152远离驱动背板10的一面的宽度为1um-3um。为了便于第一凸起152的制作,设置相邻两个第一凸起152之间的距离大于3um。
如图10所示,第一凸起152的截面形状还可以为弧形凸起,这样可以将第二反射部202的反射光线以不同的反射角度反射至与发光单元162正对且颜色相同的滤光单元192,能够提高发光单元162发光的均匀性。
显示面板还可以包括覆盖层21,覆盖层21设于彩膜层19远离驱动背板10的一侧,覆盖层21远离驱动背板10的一面为平面。可以看到的是,被反射层20利用的出射光线的最终出射角度与滤光单元192的表面的垂线具有一定的夹角,并未垂直于发光单元162的表面,导致出射光 线的利用率仍然不高,因此需要进一步提高出射光线的利用率。
如图11至图14所示,可以在滤光单元192远离驱动背板10的一面设置第二凸起1924,第二凸起1924设于每对第一凸起152中靠近发光单元162的第一凸起152的反射光路上,滤光单元192的材料的折射率大于覆盖层21的材料的折射率,出射光线在经过第二凸起1924的侧面与覆盖层21的界面折射后,出射光线的出射角度变小。滤光单元192的折射率可以为1.6-1.7,覆盖层21的折射率可以为1.47。
除了在靠近发光单元162的第一凸起152的反射光路上设置第二凸起1924之外,还可以在滤光单元192远离衬底基板11的一面的其他区域设置第二凸起1924,对发光单元162直接入射至滤光单元192的斜向光线进行准直。在本实施例中,第二凸起1924的截面为三角形凸起,第二凸起1924的侧面的坡度角为40度-60度,第二凸起1924的高度为滤光单元192的厚度的0.25-0.5倍,第二凸起1924靠近衬底基板11的一侧的宽度为滤光单元192的厚度的1-2倍,具体第二凸起1924的高度可以为1μm-2μm,第二凸起1924靠近衬底基板11的一侧的宽度可以为3μm-5μm。如图所示,第二凸起1924的截面形状还可以为弧形凸起。
第二凸起1924靠近驱动背板10的一侧与驱动背板10之间的距离,大于黑矩阵191远离驱动背板10的一侧与驱动背板10之间的距离。可以理解的是,第二凸起1924凸出于黑矩阵191远离衬底基板11的一侧,这样能够避免位于滤光单元192外围的第二凸起1924的折射光线被黑矩阵191遮挡,影响出射光线的利用率。尤其是当第二凸起1924的截面形状为弧形凸起时,第二凸起1924的折射光线并非均沿垂直于滤光单元192的表面出射,也存在部分斜向的折射光线,第二凸起1924凸出于黑矩阵191远离衬底基板11的一侧,能很好地避免斜向的折射光线被黑矩阵191遮挡。
第二凸起1924的形状与第一凸起152的形状存在多种组合方式。如图11所示,当第二凸起1924的截面形状为三角形时,第一凸起152的截面形状为梯形凸起。如图12所示,第二凸起1924的形状为弧形凸起时,第一凸起152的截面形状为梯形凸起。如图13所示,第二凸起1924的形状为三角形凸起时,第一凸起152的截面形状为弧形凸起。如图14 所示,第二凸起1924的形状为弧形凸起时,第一凸起152的截面形状为弧形凸起。
如图15所示,第一凸起152可以包括封闭的第一环形凸条,第二凸起1924可以包括封闭的第二环形凸条,第二环形凸条位于靠近像素开口151的第一环形凸条的反射光路上,第二环形凸条的形状与第一环形凸条的形状相似,一对第一环形凸条在驱动背板10上的正投影位于第二环形凸条在驱动背板10上的正投影的外围。
如图16所示,第一凸起152可以包括多个第一凸出单元,第二凸起1924包括多个第二凸出单元,靠近像素开口151的两个第一凸出单元的相互远离的两侧分别设有至少一对第二凸出单元,第一凸出单元和第二凸出单元的形状为长条形,第二凸出单元与第一凸出单元相互平行。
如图17所示,还可以在与两对第一凸出单元对应的两个第二凸出单元之间设置另一个第二凸出单元,该第二凸出单元可以将发光单元162正常从滤光单元192射出的出射光线进行准直,使其沿垂直于滤光单元192表面的方向出射。如图18所示,第二凸出单元的截面形状可以为三角形凸起,如图19所示,第二凸出单元的截面形状可以为弧形凸起。当然,也可以在与两个第一环形凸条对应的两个第二环形凸条的内侧设置另一个第二环形凸条,对从发光单元162正常从滤光单元192射出的出射光线进行准直。
如图20所示,第一凸起152可以同时包括第一环形凸条和第一凸出单元,第二凸起1924可以同时包括第二环形凸条和第二凸出单元,第一凸出单元可以对称设置于第一环形凸条的两侧,第二凸出单元可以对称设置于第二环形凸条的两侧,通过这种组合的方式,可以增加对第二反射部202的反射光线的准直出射量,进一步提升对发光单元162的出射光线的利用率。
本公开实施方式还提供了一种显示装置,该显示装置可以包括本公开实施方式上面任一项的显示面板。显示面板的具体结构和有益效果早上面已经进行了详细说明,因此,此处不再赘述。
需要说明的是,该显示装置除了显示面板以外,还包括其他必要的部件和组成,具体例如外壳、电路板、电源线,等等,本领域技术人员 可根据该显示装置的具体使用要求进行相应地补充,在此不再赘述。
显示装置也可以是新兴的穿戴设备,例如:虚拟现实设备和增强现实设备,显示装置可以是传统电子设备,例如:手机、电脑、电视和摄录放影机。在此不一一进行列举。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本公开的真正范围和精神由所附的权利要求指出。

Claims (23)

  1. 一种显示面板,其中,包括:
    驱动背板;
    像素界定层,设于所述驱动背板的一侧,所述像素界定层设有多个像素开口;
    多个像素电极,分别设于不同的像素开口内;
    不同颜色的多个发光单元,分别设于各所述像素电极远离所述驱动背板的一侧;
    公共电极,设于所述多个发光单元远离所述驱动背板的一侧;
    第一保护层,设于所述公共电极远离所述驱动背板的一侧,所述第一保护层包括第一保护部,所述第一保护部侧面的坡度角大于或小于90度;
    彩膜层,包括黑矩阵,所述黑矩阵覆盖所述第一保护部的侧面,所述黑矩阵上设有色阻开口,所述色阻开口内设有不同颜色的滤光单元,同一颜色的所述滤光单元在所述驱动背板上的正投影与同一颜色的所述发光单元在所述驱动背板上的正投影交叠;
    反射层,设于所述黑矩阵与所述第一保护部之间,所述反射层包括第一反射部,所述第一反射部覆盖所述第一保护部的侧面;
    当所述第一保护部侧面的坡度角大于90度时,发光单元的部分出射光线被所述第一反射部直接反射至与所述发光单元的颜色相同的滤光单元,当所述第一保护部侧面的坡度角小于90度时,所述发光单元的部分出射光线被所述第一反射部反射至所述公共电极后,再被所述公共电极反射至与所述发光单元的颜色相同的滤光单元。
  2. 根据权利要求1所述的显示面板,其中,所述第一保护部远离所述驱动背板的一面为第一面,所述发光单元在所述驱动背板上的正投影在所述驱动背板位于所述第一保护部的第一面在所述驱动背板上的正投影内。
  3. 根据权利要求1所述的显示面板,其中,当所述第一保护部侧面的坡度角小于90度时,所述第一保护部侧面的坡度角介于40度至65度之间。
  4. 根据权利要求1所述的显示面板,其中,所述反射层还包括第二反射部,所述第二反射部覆盖所述第一保护部远离所述驱动背板的一面。
  5. 根据权利要求4所述的显示面板,其中,当所述第一保护部侧面的坡度角小于90度时,所述像素界定层远离所述驱动背板的一面设有第一凸起,所述第一凸起位于靠近所述像素开口设置,每个所述像素开口外围设有至少一对第一凸起,每对第一凸起包括两个所述第一凸起,所述第二反射部的反射光线依次经过远离所述像素开口的所述第一凸起的侧面,以及靠近所述像素开口的所述第一凸起的侧面反射,从所述滤光单元出射。
  6. 根据权利要求5所述的显示面板,其中,所述第一凸起的截面形状为梯形凸起,所述第一凸起的侧面的坡度角为40度-65度。
  7. 根据权利要求5所述的显示面板,其中,所述第一凸起的截面形状为弧形凸起。
  8. 根据权利要求6或7所述的显示面板,其中,所述第一凸起的高度为所述像素界定层的厚度的0.5-2倍,所述第一凸起远离所述驱动背板的一面的宽度为所述像素界定层的厚度的1-4倍。
  9. 根据权利要求1所述的显示面板,其中,所述第一保护层还包括第二保护部,所述第二保护部连接于相邻两个所述第一保护部之间,所述第二保护部远离所述驱动背板的一面与所述第一保护部的侧面相连,所述第二保护部的厚度为所述第一保护部的厚度的0.25-0.5倍。
  10. 根据权利要求9所述的显示面板,其中,所述第二保护部远离所述驱动背板的一面包括第一面和第二面,所述第二保护部的第二面位于所述第一面的两端,所述第二保护部的第二面与所述第一保护部的侧面相连,所述第二保护部的第二面向靠近所述驱动背板的一侧倾斜,所述第一反射部延伸至与所述第二保护部的第二面接触。
  11. 根据权利要求5所述的显示面板,其中,所述显示面板还包括覆盖层,所述覆盖层设于所述彩膜层远离所述驱动背板的一侧,所述覆盖层远离所述驱动背板的一面为平面。
  12. 根据权利要求11所述的显示面板,其中,所述滤光单元远离所述驱动背板的一面设有第二凸起,所述第二凸起设于每对所述第一凸起 中靠近所述发光单元的所述第一凸起的反射光路上,所述滤光单元的材料的折射率大于所述覆盖层的材料的折射率,出射光线在经过所述第二凸起的侧面与所述覆盖层的界面后,出射光线的出射角度变小。
  13. 根据权利要求12所述的显示面板,其中,所述第二凸起靠近所述驱动背板的一侧与所述驱动背板之间的距离,大于所述黑矩阵远离所述驱动背板的一侧与所述驱动背板之间的距离。
  14. 根据权利要求12所述的显示面板,其中,所述第一凸起包括封闭的第一环形凸条,所述第二凸起包括封闭的第二环形凸条,所述第二环形凸条的形状与所述第一环形凸条的形状相似,一对所述第一环形凸条在所述驱动背板上的正投影位于所述第二环形凸条在所述驱动背板上的正投影的外围。
  15. 根据权利要求12所述的显示面板,其中,所述第一凸起包括多个第一凸出单元,所述第二凸起包括多个第二凸出单元,靠近所述像素开口的两个所述第一凸出单元的相互远离的两侧分别设有至少一对所述第二凸出单元,所述第一凸出单元和所述第二凸出单元的形状为长条形,所述第二凸出单元与所述第一凸出单元相互平行。
  16. 根据权利要求13所述的显示面板,其中,所述第二凸起的截面为三角形凸起,所述第二凸起的侧面的坡度角为40度-60度。
  17. 根据权利要求13所述的显示面板,其中,所述第二凸起的高度为所述滤光单元的厚度的0.25-0.5倍,所述第二凸起靠近所述驱动背板的一侧的宽度为所述滤光单元的厚度的1-2倍。
  18. 根据权利要求13所述的显示面板,其中,所述第二凸起的截面形状为弧形凸起。
  19. 根据权利要求1所述的显示面板,其中,所述显示面板还包括第一触感金属层,所述反射层与所述第一触感金属层同层同材料设置。
  20. 根据权利要求1所述的显示面板,其中,所述显示面板还包括封装层,所述封装层设于所述公共电极与所述第一保护层之间。
  21. 根据权利要求1所述的显示面板,其中,所述像素界定层的颜色为黑色。
  22. 根据权利要求1所述的显示面板,其中,所述第一保护部的第 一面在所述驱动背板上的正投影覆盖同一列所述发光单元所述驱动背板上的正投影。
  23. 一种显示装置,其中,包括权利要求1至22任一项所述的显示面板。
PCT/CN2024/073301 2024-01-19 2024-01-19 显示面板及显示装置 Pending WO2025152161A1 (zh)

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CN112578585A (zh) * 2020-12-16 2021-03-30 京东方科技集团股份有限公司 显示面板及其制备方法、显示装置
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