Display device, display panel and manufacturing method thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BOE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2025-01-06
- Publication Date
- 2026-07-07
Smart Images
Figure CN122349299A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of display technology, and in particular to a display device, a display panel, and a method for manufacturing the same. Background Technology
[0002] Liquid crystal displays (LCDs) and organic light-emitting diode (OLEDs) displays are currently the mainstream flat panel display devices. In LCDs and some OLEDs, color display is achieved through light filtering using a color filter (CF).
[0003] Currently, the aforementioned display panels cannot adequately meet users' needs for privacy protection. Summary of the Invention
[0004] The purpose of this application is to provide a simple and privacy-protected display device, display panel, and manufacturing method thereof.
[0005] This application discloses a display panel, which includes:
[0006] A light-emitting substrate, the light-emitting substrate comprising light-emitting units arranged in an array;
[0007] A color filter substrate, the color filter substrate including a plurality of color filter layers and a first optical functional layer, the plurality of color filter layers being disposed corresponding to a plurality of light-emitting units; the first optical functional layer is disposed on one side edge of the color filter layer, the refractive index of the first optical functional layer being less than the refractive index of the color filter layer.
[0008] Optionally, a second optical functional layer is provided on the other side edge of the color filter layer opposite to the first optical functional layer, and the refractive index of the second optical functional layer is greater than the refractive index of the color filter layer.
[0009] Optionally, the slope angle of at least a portion of the surface of the first optical functional layer on the side near the color filter layer is greater than or equal to 85° and less than or equal to 90°, and the slope angle of at least a portion of the surface of the second optical functional layer on the side near the color filter layer is greater than or equal to 85° and less than or equal to 90°.
[0010] Optionally, the refractive index of the first optical functional layer is greater than or equal to 1.45 and less than or equal to 1.5, the refractive index of the second optical functional layer is greater than or equal to 1.75, and the refractive index of the color filter layer is greater than or equal to 1.6 and less than or equal to 1.65.
[0011] Optionally, the minimum distance between adjacent first and second optical functional layers is greater than or equal to 3 micrometers.
[0012] Optionally, the thickness of the color filter layer is greater than the thickness of the first optical functional layer and the second optical functional layer, and the color filter layer covers the side of the first optical functional layer and the second optical functional layer away from the light-emitting substrate, with a coverage depth of less than or equal to 5 micrometers.
[0013] Optionally, the color filter substrate further includes a third optical functional layer, wherein the color filter layer, the first optical functional layer and the second optical functional layer are disposed on the side of the third optical functional layer near the light-emitting unit.
[0014] Optionally, the third optical functional layer includes a first protrusion located on the side away from the color filter layer, wherein the first protrusion is at least 2 micrometers away from the first optical functional layer and at least 5 micrometers away.
[0015] Optionally, the slope angle of at least a portion of the surface of the first protrusion on the side closest to the first optical functional layer is greater than or equal to 70° and less than or equal to 90°.
[0016] Optionally, the color filter substrate further includes a first touch layer disposed between the first optical functional layer and the third optical functional layer, and a second touch layer disposed on the side of the third optical functional layer away from the first optical functional layer.
[0017] Optionally, the color filter layer includes a second protrusion located on the side away from the light-emitting unit, wherein the second protrusion is at least 2 micrometers away from the first optical functional layer and at least 5 micrometers away.
[0018] Optionally, the slope angle of at least a portion of the surface of the second protrusion on the side closest to the first optical functional layer is greater than or equal to 70° and less than or equal to 90°.
[0019] Optionally, the color filter substrate further includes a third optical functional layer, wherein the first optical functional layer is disposed on the side of the third optical functional layer away from the light-emitting unit.
[0020] Optionally, the color filter layer and the second optical functional layer are disposed on the side of the third optical functional layer away from the light-emitting unit.
[0021] Optionally, the color filter substrate further includes a first touch layer disposed between the first optical functional layer and the third optical functional layer, and a second touch layer disposed on the side of the first optical functional layer away from the third optical functional layer.
[0022] Optionally, the color filter substrate further includes a black matrix, which is disposed on the side of the color filter substrate closest to the light-emitting substrate; the orthographic projection of the first optical functional layer onto the black matrix covers at least half of the black matrix; the orthographic projection of the second optical functional layer onto the black matrix covers a portion of the black matrix, and the distance between the second optical functional layer and the orthographic projection of the second optical functional layer is greater than or equal to 3 micrometers and less than or equal to 5 micrometers.
[0023] Optionally, the color filter substrate further includes a black matrix, which is disposed on the side of the second touch layer away from the light-emitting substrate; the black matrix covers the second touch layer.
[0024] This application also discloses a display device, which includes the display panel described above.
[0025] This application also discloses a method for manufacturing a display panel, including:
[0026] A light-emitting substrate is formed, the light-emitting substrate comprising light-emitting units arranged in an array;
[0027] A first optical functional layer and a second optical functional layer are formed on the light-emitting side of the light-emitting substrate. The first optical functional layer and the second optical functional layer are disposed on opposite sides of the light-emitting unit. The refractive index of the first optical functional layer is less than that of the second optical functional layer.
[0028] A color filter layer is formed between the first optical functional layer and the second optical functional layer at a position relative to the light-emitting unit, wherein the refractive index of the color filter layer is located between the first optical functional layer and the second optical functional layer.
[0029] Optionally, the method further includes:
[0030] A third optical functional layer is disposed on the side of the color filter layer away from the light-emitting substrate. The third optical functional layer includes a first protrusion located on the side away from the color filter layer, and the minimum distance between the first protrusion and the first optical functional layer is greater than or equal to 2 micrometers and less than or equal to 5 micrometers; or,
[0031] A second protrusion is provided on the side of the color filter layer away from the light-emitting substrate, and the minimum distance between the second protrusion and the first optical functional layer is greater than or equal to 2 micrometers and less than or equal to 5 micrometers.
[0032] Compared with related technologies, this application sets a first optical functional layer on one side edge of the color filter layer and uses the refractive index difference between the first optical functional layer and the color filter layer to limit the light emission angle of the display panel, thus achieving the privacy function through a simple structure.
[0033] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description
[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.
[0035] Figure 1 This is a schematic diagram of the film layer of the display panel in one embodiment of this application.
[0036] Figure 2 This is a schematic diagram of the film layer of the light-emitting substrate in one embodiment of this application.
[0037] Figure 3 This is a schematic diagram of the film layer of the display panel in one embodiment of this application.
[0038] Figure 4 This is a schematic diagram of the film layer of the display panel in one embodiment of this application.
[0039] Figure 5 This is a schematic diagram of the film layer of the display panel in one embodiment of this application.
[0040] Figure 6 This is a schematic diagram of the film layer of the display panel in one embodiment of this application.
[0041] Figure 7 This is a schematic diagram of the film layer of the display panel in one embodiment of this application.
[0042] Figure 8 This is a schematic diagram of the film layer of the display panel in one embodiment of this application.
[0043] Figure 9 This is a schematic diagram of the film layer of the display panel in one embodiment of this application. Detailed Implementation
[0044] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0045] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0046] like Figure 1 As shown, this application provides a display panel, which includes a light-emitting substrate 100 and a color filter substrate 200.
[0047] The light-emitting substrate 100 includes light-emitting units 110 arranged in an array.
[0048] The color filter substrate 200 includes a plurality of color filter layers 210 and a first optical functional layer 220, wherein the plurality of color filter layers 210 are disposed corresponding to a plurality of light-emitting units 110. The first optical functional layer 220 is disposed on one side edge of the color filter layer 210, and the refractive index of the first optical functional layer 220 is less than the refractive index of the color filter layer 210.
[0049] This application achieves privacy protection by setting a first optical functional layer on one side edge of the color filter layer and using the refractive index difference between the first optical functional layer and the color filter layer to limit the light emission angle of the display panel.
[0050] The following will provide a detailed description of various embodiments of this application that conform to the above-described inventive concept.
[0051] like Figure 1 As shown, this application provides a display panel, which includes a light-emitting substrate 100 and a color filter substrate 200.
[0052] like Figure 1 and Figure 2 As shown, the light-emitting substrate 100 includes a substrate 120, a driving structure layer 130, a first planarization layer PLN1, a pixel defining layer PDL, an anode layer Anode, a light-emitting unit 110, a cathode layer CTD, and an encapsulation layer TFE.
[0053] In some embodiments, the substrate 120 is a flexible substrate. The material of the flexible substrate may include one or more of polyimide, polyethylene terephthalate, polycarbonate, and organic resin materials, and the organic resin materials may include epoxy resin, triazine, silicone resin, or polyimide, etc.
[0054] In some embodiments, the substrate 120 is a rigid substrate. Rigid substrates include any of the following: glass substrates, quartz substrates, sapphire substrates, ceramic substrates, etc., or semiconductor substrates such as single-crystal semiconductor substrates or polycrystalline semiconductor substrates made of silicon or silicon carbide, compound semiconductor substrates such as silicon-germanium, SOI (Silicon On Insulator) substrates, etc.
[0055] In some embodiments, the substrate 120 includes both a rigid substrate and a flexible substrate, wherein the flexible substrate is disposed between the rigid substrate and the driving circuit layer 130. Furthermore, the rigid substrate can be removed after or during device fabrication to give the entire device high flexibility. The rigid substrate primarily serves to support the flexible substrate and the driving circuit layer 130 during fabrication.
[0056] In some embodiments, the driving structure layer 130 may include an active layer Poly, a first gate insulating layer GI1, a first gate insulating layer Gate1, a second gate insulating layer GI2, a second gate insulating layer Gate2, an interlayer insulating layer ILD, a first source / drain metal layer SD1, a passivation layer PVX, a third planarization layer PLN3, and a second source / drain metal layer SD2.
[0057] The active layer Poly can be made of amorphous silicon or polycrystalline silicon, etc. A first gate insulating layer GI1 is disposed on the side of the active layer Poly away from the substrate 120, and a first gate layer Gate1 is disposed on the side of the first gate insulating layer GI1 away from the active layer Poly. The first gate insulating layer GI1 can be a single, continuous layer, or it can have a shape and pattern substantially consistent with the first gate layer Gate1, as long as it effectively isolates the first gate layer Gate1 from the active layer Poly. The first gate insulating layer GI1 can be made of silicon oxide, silicon nitride, or silicon oxynitride, etc. The first gate layer Gate1 can be made of metallic materials such as aluminum, copper, or silver.
[0058] The second gate insulating layer GI2 is disposed on the side of the first gate layer Gate1 away from the first gate insulating layer GI1, and the second gate layer Gate2 is disposed on the side of the second gate insulating layer GI2 away from the first gate layer Gate1. The second gate insulating layer GI2 can be a complete single layer, or it can have a shape and pattern that are basically the same as the second gate layer Gate2, as long as it can effectively isolate the second gate layer Gate2 from the first gate layer Gate1. The material of the second gate insulating layer GI2 can be silicon oxide, silicon nitride, or silicon oxynitride, etc. The material of the second gate layer Gate2 can be a metal material such as aluminum, copper, or silver.
[0059] An interlayer insulating layer (ILD) is disposed on the side of the second gate layer (Gate2) away from the second gate insulating layer (GI2). The ILD can be made of insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride. A first source / drain metal layer (SD1) is disposed on the side of the ILD away from the second gate layer (Gate2). A portion of the first source / drain metal layer (SD1) is connected to the active layer (Poly) to form the source and drain of the transistor. The first source / drain metal layer (SD1) can be made of conductive metals such as aluminum, copper, or silver. A passivation layer (PVX) is disposed on the side of the first source / drain metal layer (SD1) away from the ILD. The PVX can be made of insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride. A third planarization layer (PLN3) is disposed on the side of the passivation layer (PVX) away from the first source / drain metal layer (SD1). The upper surface of the third planarization layer (PLN3) is flat. The third planarization layer (PLN3) can be made of silicon oxide, silicon nitride, silicon oxynitride, or organic materials. The second source / drain metal layer SD2 is disposed on the side of the third planarization layer PLN3 away from the passivation layer PVX. Part of the second source / drain metal layer SD2 is connected to the first source / drain metal layer SD1 to form a circuit trace that meets the requirements.
[0060] The conductive layer and the insulating layer in the driving structure layer 130 together form the driving circuit required to drive the light-emitting unit 110. The driving circuit may include a transistor formed from the first source-drain metal layer SD1 to the active layer Poly, and a capacitor formed from the second gate layer Gate2 to the first gate layer Gate1, etc.
[0061] The first planarization layer PLN1 is disposed on the side of the second source / drain metal layer SD2 away from the third planarization layer PLN3. The upper surface of the first planarization layer PLN1 is a flat surface. The material of the third planarization layer PLN3 can be silicon oxide, silicon nitride, silicon oxynitride, or organic materials.
[0062] The pixel defining layer (PDL) is disposed on the side of the first planarization layer (PLN1) away from the driving structure layer (130). The PDL covers a portion of the first planarization layer (PLN1) and exposes several upper surfaces of the first planarization layer (PLN1) in an array arrangement. Each exposed area is provided with a light-emitting unit (110), that is, the PDL defines the array of light-emitting units (110) in the display panel.
[0063] The anode layer is disposed on the upper surface of several first planarization layers PLN1 exposed by the pixel defining layer PDL. The anode layer is connected to the second source / drain metal layer SD2. The anode layer can be made of metal materials such as aluminum, copper, or silver, or transparent conductive materials such as indium tin oxide (ITO) or indium zinc oxide.
[0064] The light-emitting unit 110 is disposed on the side of the anode layer away from the first planarization layer PLN1. The light-emitting unit 110 can be an OLED (Organic Light-Emitting Diode) light-emitting unit or a QLED (Quantum Dot Light-Emitting Diode) light-emitting unit, etc. Some of the light-emitting units 110 are configured to emit red light, some are configured to emit green light, and some are configured to emit blue light. The three types of light-emitting units 110 are arranged in an array in the area exposed by the pixel defining layer PDL and are connected to the anode layer.
[0065] The cathode layer CTD is located on the side of the light-emitting unit 110 away from the anode layer. The cathode layer CTD can be made of metals such as aluminum, copper, or silver, or transparent conductive materials such as indium tin oxide (ITO) or indium zinc oxide. The encapsulation layer TFE is located on the side of the cathode layer CTD away from the light-emitting unit 110. The encapsulation layer TFE is used to encapsulate and prevent elements such as water and oxygen from corroding the layers below the cathode layer CTD.
[0066] In some optional embodiments, the color filter substrate 200 includes a black matrix BM, a plurality of color filter layers 210, and a first optical functional layer 220, wherein the plurality of color filter layers 210 are disposed corresponding to a plurality of light-emitting units 110. The black matrix BM is disposed between the plurality of color filter layers 210 to prevent crosstalk from the light emitted by the light-emitting units 110. Both the color filter layers 210 and the black matrix BM are bonded to the encapsulation layer TFE. Optionally, the distance from the orthographic projection of the black matrix BM onto the pixel boundary layer PDL to the edge of the pixel boundary layer PDL is greater than or equal to 4 micrometers and less than or equal to 6 micrometers.
[0067] A first optical functional layer 220 is disposed on one edge of the color filter layer 210, and the refractive index of the first optical functional layer 220 is less than that of the color filter layer 210. A portion of the first optical functional layer 220 is bonded to the encapsulation layer TFE, and a portion of the first optical functional layer 220 covers the black matrix BM, with the orthographic projection of the first optical functional layer 220 onto the black matrix BM covering at least half of the black matrix BM. Optionally, the thickness of the first optical functional layer 220 is 1.5 micrometers to 2 micrometers. The thickness of the color filter layer 210 is greater than the thickness of the first optical functional layer 220, and a portion of the color filter layer 210 covers the side of the first optical functional layer 220 away from the light-emitting substrate 100, with a coverage depth of less than or equal to 5 micrometers. That is, the distance between the orthographic projection of the color filter layer 210 onto the first optical functional layer 220 and the edge of the first optical functional layer 220 is less than or equal to 5 micrometers. Optionally, the distance between the orthographic projection of the first optical functional layer 220 onto the pixel defining layer PDL and the nearest edge of the pixel defining layer PDL is greater than or equal to 0 micrometers and less than or equal to 2 micrometers.
[0068] Specifically, each of the arrayed light-emitting units 110 has a corresponding color filter layer 210 above it, and a first optical functional layer 220 is provided on the same side of all color filter layers 210. For example, in a vehicle screen, the first optical functional layer 220 can be provided on the side of the color filter layer 210 away from the driver's seat. Thus, since the refractive index of the first optical functional layer 220 is less than that of the color filter layer 210, the optical path of some light rays is as shown in F2. When the light emitted by the light-emitting unit 110 is incident on the interface between the color filter layer 210 and the first optical functional layer 220 after passing through the color filter layer 210, the light rays are reflected to the side facing the driver's seat, thereby achieving the anti-peeping function and improving the display brightness of the driver's seat. Optionally, the cross-section of the first optical functional layer 220 can be trapezoidal, quadrilateral, or semi-circular, etc., as long as the slope angle α1 of at least part of its surface near the color filter layer 210 is greater than or equal to 85° and less than or equal to 90°. In this embodiment, the cross-section of the first optical functional layer 220 is a trapezoid, and the slope angle α1 of the trapezoidal side is greater than or equal to 85° and less than or equal to 90°. Optionally, the refractive index of the first optical functional layer 220 is greater than or equal to 1.45 and less than or equal to 1.5, and the refractive index of the color filter layer 210 is greater than or equal to 1.6 and less than or equal to 1.65.
[0069] like Figure 1 As shown, in some embodiments, a second optical functional layer 230 is further disposed on the other edge of the color filter layer 210 opposite to the first optical functional layer 220, and the refractive index of the second optical functional layer 230 is greater than that of the color filter layer 210. A portion of the second optical functional layer 230 is bonded to the encapsulation layer TFE, and a portion of the second optical functional layer 230 covers the black matrix BM. The minimum distance between adjacent first optical functional layers 220 and second optical functional layers 230 is greater than or equal to 3 micrometers. Optionally, the minimum distance between adjacent first optical functional layers 220 and second optical functional layers 230 on the upper side of the same black matrix BM is greater than or equal to 3 micrometers and less than or equal to 5 micrometers. Optionally, the thickness of the second optical functional layer 230 is 1.5 micrometers to 2 micrometers. The thickness of the color filter layer 210 is greater than the thickness of the second optical functional layer 230, and a portion of the color filter layer 210 covers the side of the second optical functional layer 230 away from the light-emitting substrate 100, with a coverage depth of less than or equal to 5 micrometers. That is, the distance between the orthographic projection of the color filter layer 210 onto the second optical functional layer 230 and the edge of the second optical functional layer 230 is less than or equal to 5 micrometers. Optionally, the distance between the orthographic projection of the second optical functional layer 230 onto the pixel defining layer PDL and the nearest edge of the pixel defining layer PDL is greater than or equal to 0 micrometers and less than or equal to 2 micrometers.
[0070] Specifically, a second optical functional layer 230 is provided on the opposite edge of all color filter layers 210 relative to the first optical functional layer 220. For example, in an in-vehicle screen, the second optical functional layer 230 can be provided on the side of the color filter layer 210 closer to the driver's seat. Thus, since the refractive index of the second optical functional layer 230 is greater than that of the color filter layer 210, the optical path of some light rays is as shown in F1. When the light emitted by the light-emitting unit 110 is incident on the interface between the color filter layer 210 and the second optical functional layer 230 through the color filter layer 210, the light rays are refracted to the side facing the driver's seat, thereby achieving the privacy function and improving the display brightness in the driver's seat. Optionally, the cross-section of the second optical functional layer 230 can be trapezoidal, quadrilateral, or semi-circular, etc., as long as the slope angle α2 of at least a portion of its surface on the side closer to the color filter layer 210 is greater than or equal to 85° and less than or equal to 90°. In this embodiment, the cross-section of the second optical functional layer 230 is a trapezoid, and the slope angle α2 of the trapezoidal side is greater than or equal to 85° and less than or equal to 90°. Optionally, the refractive index of the second optical functional layer is greater than or equal to 1.75.
[0071] like Figure 1 As shown, in some embodiments, the color filter substrate 200 further includes a third optical functional layer 240. The color filter layer 210, the first optical functional layer 220, and the second optical functional layer 230 are all disposed on the side of the third optical functional layer 240 near the light-emitting unit 110. That is, the third optical functional layer 240 covers the color filter layer 210, the first optical functional layer 220, and the second optical functional layer 230. Optionally, the third optical functional layer 240 also covers a portion of the black matrix BM. Optionally, the color filter substrate 200 further includes a first touch layer TMA disposed between the first optical functional layer 220 and the third optical functional layer 240, and a second touch layer TMB disposed on the side of the third optical functional layer 240 away from the first optical functional layer 220. The first touch layer TMA and the second touch layer TMB together form a capacitive touch structure to realize the touch function of the display panel. Optionally, the distance between the first touch layer TMA and the edge of the first optical functional layer 220 away from the color filter layer 210 is greater than or equal to 2 micrometers. The side of the third optical functional layer 240 away from the first optical functional layer 220 can be a flat surface. The refractive index of the third optical functional layer 240 can be selected according to requirements and is not limited here. A second planarization layer PLN2 is also provided on the side of the third optical functional layer 240 away from the light-emitting substrate 100. The upper surface of the second planarization layer PLN2 is a flat surface.
[0072] like Figure 3 As shown, in some embodiments, the structures of the light-emitting substrate 100 and the color filter substrate 200 are largely the same as those of the light-emitting substrate 100 and the color filter substrate 200. Figure 1The embodiments shown are the same and will not be described in detail here. The difference is that in this embodiment, the third optical functional layer 240 includes a first protrusion 241 located on the side away from the color filter layer 210. The minimum distance between the first protrusion 241 and the first optical functional layer 220 is greater than or equal to 2 micrometers and less than or equal to 5 micrometers. That is, the distance from the bottom edge of the first protrusion 241 to the top edge of the first optical functional layer 220 is greater than or equal to 2 micrometers and less than or equal to 5 micrometers. Optionally, the height of the first protrusion 241 is greater than or equal to 1.5 micrometers and less than or equal to 2 micrometers. The slope angle α3 of at least a portion of the surface of the first protrusion 241 on the side closest to the first optical functional layer 220 is greater than or equal to 70° and less than or equal to 90°. For example, the cross-section of the first protrusion 241 can be trapezoidal, quadrilateral, or semi-circular. In the embodiment of this application, the cross-section of the first protrusion 241 is a regular trapezoid, and the slope angle α3 of the side of the regular trapezoid is greater than or equal to 70° and less than or equal to 90°. Furthermore, the second planarization layer PLN2 in this embodiment is made of a low-refractive-index material, with a refractive index lower than that of the third optical functional layer 240. Thus, the optical path of some light rays is as shown in F2. When the light emitted by the light-emitting unit 110 is incident on the interface between the color filter layer 210 and the second optical functional layer 230, the light rays are refracted to the side facing the driver's seat. When the light rays reach the interface between the first protrusion 241 and the second planarization layer PLN2, the light rays are further refracted to the side facing the driver's seat, thereby better realizing the privacy function and improving the display brightness of the driver's seat.
[0073] like Figure 4 As shown, in some embodiments, the structures of the light-emitting substrate 100 and the color filter substrate 200 are largely the same as those of the light-emitting substrate 100 and the color filter substrate 200. Figure 1 The embodiments shown are the same and will not be described in detail here. The difference is that in this embodiment, the first optical functional layer 220 is disposed on the side of the third optical functional layer 240 away from the light-emitting unit 110, and the color filter layer 210 and the second optical functional layer 230 are also disposed on the side of the third optical functional layer 240 away from the light-emitting unit. That is, the horizontal positions of the color filter layer 210, the first optical functional layer 220, the second optical functional layer 230, and the third optical functional layer 240 remain unchanged, but the third optical functional layer 240 is moved to the side of the color filter layer 210, the first optical functional layer 220, and the second optical functional layer 230 closer to the light-emitting substrate 100 in the vertical direction. The third optical functional layer 240 covers the encapsulation layer TFE and the black matrix BM. Furthermore, in this embodiment, the first touch layer TMA is disposed between the first optical functional layer 220 and the third optical functional layer 240, and the second touch layer TMB is disposed on the side of the first optical functional layer 220 away from the third optical functional layer 240. Thus, the optical path diagrams of some rays, such as F1 and F2, are based on the same principle as those in the above embodiments, and will not be elaborated further here.
[0074] like Figure 5As shown, in some embodiments, the structures of the light-emitting substrate 100 and the color filter substrate 200 are largely the same as those of the light-emitting substrate 100 and the color filter substrate 200. Figure 4 The embodiments shown are the same and will not be described in detail here. The difference is that in this embodiment, the color filter layer 210 includes a second protrusion 211 located on the side away from the light-emitting unit 110. The minimum distance between the second protrusion 211 and the first optical functional layer 220 is greater than or equal to 2 micrometers and less than or equal to 5 micrometers. That is, the distance from the bottom edge of the second protrusion 211 to the top edge of the first optical functional layer 220 is greater than or equal to 2 micrometers and less than or equal to 5 micrometers. Optionally, the height of the second protrusion 211 is greater than or equal to 1.5 micrometers and less than or equal to 2 micrometers. The slope angle α3 of at least a portion of the surface of the second protrusion 211 on the side closer to the first optical functional layer 220 is greater than or equal to 70° and less than or equal to 90°. For example, the cross-section of the second protrusion 211 can be trapezoidal, quadrilateral, or semi-circular. In this embodiment, the cross-section of the second protrusion 211 is a regular trapezoid, and the slope angle α3 of the side of the regular trapezoid is greater than or equal to 70° and less than or equal to 90°. Furthermore, the second planarization layer PLN2 in this embodiment is made of a low-refractive-index material, and its refractive index is less than that of the color filter layer 210. Thus, the light path of some light rays is as shown in F2. When the light emitted by the light-emitting unit 110 is incident on the interface between the color filter layer 210 and the second optical functional layer 230, the light rays are refracted to the side facing the driver's seat. When the light rays reach the interface between the second protrusion 211 and the second planarization layer PLN2, the light rays are further refracted to the side facing the driver's seat, thereby better realizing the anti-peeping function and improving the display brightness of the driver's seat.
[0075] like Figure 6 As shown, in some embodiments, the structures of the light-emitting substrate 100 and the color filter substrate 200 are largely the same as those of the light-emitting substrate 100 and the color filter substrate 200. Figure 4 The embodiments shown are the same and will not be described in detail here. The difference is that in this embodiment, the third optical functional layer 240 is only disposed on the side of the first optical functional layer 220 near the light-emitting unit 110. That is, the first optical functional layer 220 does not contact the black matrix BM and the encapsulation layer TFE, while the second optical functional layer 230 contacts the black matrix BM and the encapsulation layer TFE, and the color filter layer 210 contacts the encapsulation layer TFE. Optionally, in this embodiment, the height of the second optical functional layer 230 is equal to the sum of the height of the third optical functional layer 240 and the height of the first optical functional layer 220, and the height of the color filter layer 210 is higher than the height of the second optical functional layer 230. Thus, the optical path patterns of some rays, such as F1 and F2, are based on the same principle as in the above embodiments and will not be described in detail here.
[0076] like Figure 7 As shown, in some embodiments, the structures of the light-emitting substrate 100 and the color filter substrate 200 are largely the same as those of the light-emitting substrate 100 and the color filter substrate 200. Figure 6The embodiments shown are the same and will not be described in detail here. The difference is that in this embodiment, the color filter layer 210 includes a second protrusion 211 located on the side away from the light-emitting unit 110. The minimum distance between the second protrusion 211 and the first optical functional layer 220 is greater than or equal to 2 micrometers and less than or equal to 5 micrometers. That is, the distance from the bottom edge of the second protrusion 211 to the top edge of the first optical functional layer 220 is greater than or equal to 2 micrometers and less than or equal to 5 micrometers. Optionally, the height of the second protrusion 211 is greater than or equal to 1.5 micrometers and less than or equal to 2 micrometers. The slope angle α3 of at least a portion of the surface of the second protrusion 211 on the side closer to the first optical functional layer 220 is greater than or equal to 70° and less than or equal to 90°. For example, the cross-section of the second protrusion 211 can be trapezoidal, quadrilateral, or semi-circular. In this embodiment, the cross-section of the second protrusion 211 is a regular trapezoid, and the slope angle α3 of the side of the regular trapezoid is greater than or equal to 70° and less than or equal to 90°. Furthermore, the second planarization layer PLN2 in this embodiment is made of a low-refractive-index material, and its refractive index is less than that of the color filter layer 210. Thus, the light path of some light rays is as shown in F2. When the light emitted by the light-emitting unit 110 is incident on the interface between the color filter layer 210 and the second optical functional layer 230, the light rays are refracted to the side facing the driver's seat. When the light rays reach the interface between the second protrusion 211 and the second planarization layer PLN2, the light rays are further refracted to the side facing the driver's seat, thereby better realizing the anti-peeping function and improving the display brightness of the driver's seat.
[0077] like Figure 8 As shown, in some embodiments, the structures of the light-emitting substrate 100 and the color filter substrate 200 are largely the same as those of the light-emitting substrate 100 and the color filter substrate 200. Figure 1 The embodiments shown are the same, and will not be described in detail here. The difference is that in this embodiment, the black matrix BM is no longer disposed below the first optical functional layer 220 and the second optical functional layer 230, but is disposed on the side of the third optical functional layer 240 away from the light-emitting unit 110. Furthermore, the black matrix BM covers the second touch layer TMB. Similarly, Figure 3 The black matrix in the illustrated embodiment can also be set in this way, which will not be elaborated here.
[0078] like Figure 9 As shown, in some embodiments, the structures of the light-emitting substrate 100 and the color filter substrate 200 are largely the same as those of the light-emitting substrate 100 and the color filter substrate 200. Figure 4 The embodiments shown are the same, and will not be described in detail here. The difference is that in this embodiment, the black matrix BM is no longer disposed below the third optical functional layer 240, but is disposed on the side of the first optical functional layer 220 away from the light-emitting unit 110. Furthermore, the black matrix BM covers the second touch layer TMB. Similarly, Figures 5 to 7 The black matrix in the illustrated embodiment can also be set in this way, which will not be elaborated here.
[0079] In various embodiments of this application, the first optical functional layer 220, the second optical functional layer 230, the third optical functional layer 240, and the second planarization layer PLN2 can be manufactured using OC optical resin or ink.
[0080] This application sets a first optical functional layer on one side edge of the color filter layer, and uses the difference in refractive index between the first optical functional layer and the color filter layer to limit the light emission angle of the display panel, so that the privacy function can be integrated without the color filter layer losing its own function.
[0081] This application also discloses a display device, which includes the display panel described above.
[0082] This application also discloses a method for manufacturing a display panel, the method comprising:
[0083] S1: Forming a light-emitting substrate, the light-emitting substrate includes light-emitting units arranged in an array.
[0084] S2: A first optical functional layer and a second optical functional layer are formed on the light-emitting side of the light-emitting substrate. The first optical functional layer and the second optical functional layer are disposed on opposite sides of the light-emitting unit. The refractive index of the first optical functional layer is less than that of the second optical functional layer.
[0085] S3: A color filter layer is formed between the first optical functional layer and the second optical functional layer at a position relative to the light-emitting unit, and the refractive index of the color filter layer is located between the first optical functional layer and the second optical functional layer.
[0086] Optionally, the method further includes:
[0087] S4: A third optical functional layer is disposed on the side of the color filter layer away from the light-emitting substrate. The third optical functional layer includes a first protrusion located on the side away from the color filter layer. The minimum distance between the first protrusion and the first optical functional layer is greater than or equal to 2 micrometers and less than or equal to 5 micrometers; or,
[0088] A second protrusion is provided on the side of the color filter layer away from the light-emitting substrate, and the minimum distance between the second protrusion and the first optical functional layer is greater than or equal to 2 micrometers and less than or equal to 5 micrometers.
[0089] Optionally, the method further includes steps such as forming a black matrix BM, a first touch layer TMA, and a second touch layer TMB. These steps can be interspersed between steps S1 to S4 or performed after S4, depending on actual needs.
[0090] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A display panel, characterized in that, include: A light-emitting substrate, the light-emitting substrate comprising light-emitting units arranged in an array; A color filter substrate, the color filter substrate including a plurality of color filter layers and a first optical functional layer, the plurality of color filter layers being disposed corresponding to a plurality of light-emitting units; the first optical functional layer is disposed on one side edge of the color filter layer, the refractive index of the first optical functional layer being less than the refractive index of the color filter layer.
2. The display panel according to claim 1, characterized in that, A second optical functional layer is provided on the other side edge of the color filter layer opposite to the first optical functional layer, and the refractive index of the second optical functional layer is greater than that of the color filter layer.
3. The display panel according to claim 2, characterized in that, The slope angle of at least a portion of the surface of the first optical functional layer on the side near the color filter layer is greater than or equal to 85° and less than or equal to 90°, and the slope angle of at least a portion of the surface of the second optical functional layer on the side near the color filter layer is greater than or equal to 85° and less than or equal to 90°.
4. The display panel according to claim 2, characterized in that, The refractive index of the first optical functional layer is greater than or equal to 1.45 and less than or equal to 1.5, the refractive index of the second optical functional layer is greater than or equal to 1.75, and the refractive index of the color filter layer is greater than or equal to 1.6 and less than or equal to 1.
65.
5. The display panel according to claim 2, characterized in that, The minimum distance between adjacent first and second optical functional layers is greater than or equal to 3 micrometers.
6. The display panel according to claim 2, characterized in that, The thickness of the color filter layer is greater than the thickness of the first optical functional layer and the second optical functional layer. The color filter layer covers the side of the first optical functional layer and the second optical functional layer away from the light-emitting substrate, and the coverage depth is less than or equal to 5 micrometers.
7. The display panel according to claim 2, characterized in that, The color filter substrate further includes a third optical functional layer, wherein the color filter layer, the first optical functional layer and the second optical functional layer are disposed on the side of the third optical functional layer near the light-emitting unit.
8. The display panel according to claim 7, characterized in that, The third optical functional layer includes a first protrusion located on the side away from the color filter layer, and the minimum distance between the first protrusion and the first optical functional layer is greater than or equal to 2 micrometers and less than or equal to 5 micrometers.
9. The display panel according to claim 8, characterized in that, The slope angle of at least a portion of the surface of the first protrusion on the side closest to the first optical functional layer is greater than or equal to 70° and less than or equal to 90°.
10. The display panel according to claim 7, characterized in that, The color filter substrate further includes a first touch layer disposed between the first optical functional layer and the third optical functional layer, and a second touch layer disposed on the side of the third optical functional layer away from the first optical functional layer.
11. The display panel according to claim 2, characterized in that, The color filter layer includes a second protrusion located on the side away from the light-emitting unit, and the minimum distance between the second protrusion and the first optical functional layer is greater than or equal to 2 micrometers and less than or equal to 5 micrometers.
12. The display panel according to claim 11, characterized in that, The slope angle of at least a portion of the surface of the second protrusion on the side closest to the first optical functional layer is greater than or equal to 70° and less than or equal to 90°.
13. The display panel according to claim 10, characterized in that, The color filter substrate further includes a third optical functional layer, and the first optical functional layer is disposed on the side of the third optical functional layer away from the light-emitting unit.
14. The display panel according to claim 13, characterized in that, The color filter layer and the second optical functional layer are disposed on the side of the third optical functional layer away from the light-emitting unit.
15. The display panel according to claim 13, characterized in that, The color filter substrate further includes a first touch layer disposed between the first optical functional layer and the third optical functional layer, and a second touch layer disposed on the side of the first optical functional layer away from the third optical functional layer.
16. The display panel according to any one of claims 1-15, characterized in that, The color filter substrate further includes a black matrix, which is disposed on the side of the color filter substrate closest to the light-emitting substrate; the orthogonal projection of the first optical functional layer onto the black matrix covers at least half of the black matrix; The orthographic projection of the second optical functional layer onto the black matrix covers a portion of the black matrix, and the distance between the orthographic projection of the second optical functional layer and the first optical functional layer is greater than or equal to 3 micrometers and less than or equal to 5 micrometers.
17. The display panel according to claim 10 or 15, characterized in that, The color filter substrate further includes a black matrix, which is disposed on the side of the second touch layer away from the light-emitting substrate; the black matrix covers the second touch layer.
18. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1-17.
19. A method for manufacturing a display panel, characterized in that, include: A light-emitting substrate is formed, the light-emitting substrate comprising light-emitting units arranged in an array; A first optical functional layer and a second optical functional layer are formed on the light-emitting side of the light-emitting substrate. The first optical functional layer and the second optical functional layer are disposed on opposite sides of the light-emitting unit. The refractive index of the first optical functional layer is less than that of the second optical functional layer. A color filter layer is formed between the first optical functional layer and the second optical functional layer at a position relative to the light-emitting unit, wherein the refractive index of the color filter layer is located between the first optical functional layer and the second optical functional layer.
20. The method for manufacturing a display panel according to claim 19, characterized in that, The method further includes: A third optical functional layer is disposed on the side of the color filter layer away from the light-emitting substrate. The third optical functional layer includes a first protrusion located on the side away from the color filter layer, and the minimum distance between the first protrusion and the first optical functional layer is greater than or equal to 2 micrometers and less than or equal to 5 micrometers; or, A second protrusion is provided on the side of the color filter layer away from the light-emitting substrate, and the minimum distance between the second protrusion and the first optical functional layer is greater than or equal to 2 micrometers and less than or equal to 5 micrometers.