CN117289822A - Display panel and display device - Google Patents
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- CN117289822A CN117289822A CN202311232113.XA CN202311232113A CN117289822A CN 117289822 A CN117289822 A CN 117289822A CN 202311232113 A CN202311232113 A CN 202311232113A CN 117289822 A CN117289822 A CN 117289822A
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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
- H10K59/40—OLEDs integrated with touch screens
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display panel and a display device, wherein the display panel comprises a substrate, a light-emitting layer and a touch layer, wherein the light-emitting layer and the touch layer are positioned on one side of the substrate; the light emitting layer includes a plurality of light emitting units; the touch control layer comprises a first organic layer and a first touch control metal layer, and the first touch control metal layer is positioned on one side of the first organic layer far away from the light emitting layer; the first organic layer comprises a plurality of openings, and orthographic projection of the openings on a first plane covers the light-emitting units; the application adopts organic material with the dielectric layer of display panel touch-control layer, carries out patterning exposure processing with first organic layer, digs the hole to the first organic layer of the light-emitting unit light-emitting side also to break through the membrane thickness limit of exposure machine, reduce the thickness of first organic layer, make its thickness attenuate to below 0.5um, thereby reduce the bending radius of flexible product and improve the bending property of flexible product, guarantee to influence the touch-control and the demonstration of display panel.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
In the prior art, in a display panel integrating touch and light filtering, for example, an inorganic film is generally used as a dielectric layer (TP Via) of a TPOT (Color Filter On Touch, touch electrode layer on a package panel) at present, and cracks are easily generated in a bent product, so that touch failure is caused, and touch and display of the display panel are affected.
Disclosure of Invention
The invention provides a display panel and a display device, wherein the organic medium layer of the touch control layer of the display panel is subjected to patterning exposure treatment so as to break through the film thickness limit of an exposure machine and reduce the thickness of the organic medium, thereby reducing the bending radius of a flexible product and improving the bending performance of the flexible product and ensuring the influence on the touch control and display of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including a substrate, and a light emitting layer and a touch layer located on one side of the substrate;
the light emitting layer includes a plurality of light emitting units;
the touch control layer comprises a first organic layer and a first touch control metal layer, and the first touch control metal layer is positioned on one side of the first organic layer far away from the light-emitting layer;
the first organic layer comprises a plurality of openings, and orthographic projection of the openings on a first plane covers the light emitting units; the first plane is a plane where the substrate base plate is located.
In a second aspect, an embodiment of the present invention further provides a display apparatus, where the display apparatus includes the display panel provided in the first aspect.
According to the display panel provided by the embodiment of the invention, the dielectric layer of the touch control layer of the display panel is made of the organic material, the first organic layer 31 is subjected to patterning exposure treatment, and the first organic layer on the light emitting side of the light emitting unit is hollowed, so that the film thickness limit of the exposure machine is broken through, the thickness of the first organic layer is reduced, and the thickness of the first organic layer is reduced to be less than 0.5um, so that the bending radius of a flexible product is reduced, the bending performance of the flexible product is improved, and the influence on the touch control and display of the display panel is ensured.
Drawings
FIG. 1 is a top view of a display panel according to the prior art;
FIG. 2 is a schematic cross-sectional view taken along the direction AA' of FIG. 1;
FIG. 3 is a top view of a display panel according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view taken along the direction BB' in FIG. 3;
FIG. 5 is another cross-sectional schematic view along BB' in FIG. 3;
FIG. 6 is another schematic cross-sectional view taken along the direction BB' in FIG. 3;
FIG. 7 is another cross-sectional schematic view along BB' in FIG. 3;
FIG. 8 is a top view of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic view of the optical path of a cross-section taken along the direction CC' in FIG. 8;
FIG. 10 is a top view of another display panel according to an embodiment of the present invention;
FIG. 11 is a top view of another display panel according to an embodiment of the present invention;
FIG. 12 is a top view of another display panel according to an embodiment of the present invention;
fig. 13 is a top view of a display device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
FIG. 1 is a top view of a display panel according to the prior art; fig. 2 is a schematic cross-sectional view along AA' in fig. 1. Referring to fig. 1 and fig. 2, in the display panel 100 provided in the prior art, an inorganic dielectric layer (TP Via) in a TPOT is converted into an organic dielectric layer 103, so that the problem that a crack is easy to occur in a bent product can be improved, but in the prior art, the organic dielectric layer 103 has the function of isolating TM1 (touch active layer or scan line layer) and TM2 (touch electrode source drain data line layer) at a bridge crossing position transversely (as shown in an X direction in the drawing), and connecting a touch driving electrode (TX) and a touch sensing electrode (RX) formed by TM2 longitudinally (as shown in a Z direction in the drawing). As shown in fig. 1, the organic dielectric layer 103 is mostly covered over the entire surface of the display area A1, and has an opening M only locally at the bridge. It is difficult to make the organic dielectric layer 103 with almost whole surface coverage to be thinner, and the thickness h of the organic dielectric layer 103 is generally 0 Greater than or equal to 0.8 μm, and thicker organic dielectric layer 103 is not beneficial to reducing the bending radius of flexible products, and is easy to cause short circuit and open circuit of TM 2;and in combination with the illustration of fig. 2, the thicker film layer is easy to cause discontinuous film formation of TM2 of the line-changing deep hole in the non-display area A2 (as indicated by a dotted circle in fig. 2), and the TM2 at the edge of the peripheral organic medium layer 103 is etched and remained due to larger stage difference, so that the touch control and display of the display panel are affected.
It should be noted that the film layers of the display panel 100 further include other film layers, such as the driving circuit layer 101, the light emitting layer 102, the packaging layer (not shown in the drawings), and the like, which are not shown here.
Based on the technical problems, the embodiment of the invention provides a display panel, which comprises a substrate, a light-emitting layer and a touch layer, wherein the light-emitting layer and the touch layer are positioned on one side of the substrate; the light emitting layer includes a plurality of light emitting units; the touch control layer comprises a first organic layer and a first touch control metal layer, and the first touch control metal layer is positioned on one side of the first organic layer far away from the light emitting layer; the first organic layer comprises a plurality of openings, and orthographic projection of the openings on a first plane covers the light-emitting units; the first plane is a plane where the substrate base plate is located.
By adopting the technical scheme, the TPOT touch screen is improved in structure and process, the dielectric layer of the touch control layer of the display panel is made of organic materials, the first organic layer of the touch control layer is patterned, the first organic layer on the light emitting side of the light emitting unit is hollowed, a plurality of openings are obtained, the orthographic projection of the openings on the plane where the substrate is located covers the light emitting unit, the film thickness limit of the exposure machine can be broken through by carrying out patterning exposure treatment on the first organic layer, the thickness of the film is smaller, and the first organic layer is thinned to be less than 0.5um, so that the bending radius of a flexible product and the bending of the flexible product are reduced, and the short circuit and the open circuit of the metal wiring of the first touch control metal layer are avoided; meanwhile, the steps at the edge of the display area AA can be reduced, the problems that film formation discontinuity occurs in the first touch metal layer (TM 2) in the line changing deep hole in the non-display area and electrical failure caused by step bottom residues exists in the etching process of the first touch metal layer (TM 2) of the touch layer are avoided, and accordingly touch and display of the display panel are guaranteed to be affected.
The foregoing is the core idea of the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making any inventive effort are intended to fall within the scope of the present invention.
FIG. 3 is a top view of a display panel according to an embodiment of the present invention; FIG. 4 is a schematic cross-sectional view taken along the direction AA' of FIG. 3; FIG. 5 is another schematic cross-sectional view taken along the direction AA' of FIG. 3; fig. 6 is another schematic cross-sectional view along AA' in fig. 3. Referring to fig. 3 to fig. 6, a display panel 200 provided by an embodiment of the present invention includes a substrate 201, and a light emitting layer 202 and a touch layer 203 located on one side of the substrate 201; the light emitting layer 202 includes a plurality of light emitting units 21; the touch layer 203 includes a first organic layer 31 and a first touch metal layer 32, where the first touch metal layer 32 is located on a side of the first organic layer 31 away from the light emitting layer 202; the first organic layer 31 includes a plurality of openings D, and orthographic projections of the openings D on the first plane cover the light emitting units 21; the first plane is a plane where the substrate 201 is located.
Specifically, referring to fig. 3, the display panel 200 provided in the embodiment of the present invention includes an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel, or may be a Micro light emitting diode (Micro Light Emitting Diode, micro LED) display panel or other types of display panels, which is not limited in this embodiment, and only an OLED display panel is illustrated in the drawings of the embodiment of the present invention. The display panel 200 includes a display Area (AA) for normally displaying a picture, and a non-display Area NA, which may at least partially surround a frame Area of the display Area AA, such as a peripheral routing Area, for touch routing arrangement, packaging of the display panel, and the like.
Referring to fig. 4, the substrate 201 of the display panel 200 may be a rigid material such as glass or silicon wafer, or a flexible material such as ultra-thin glass, metal foil or polymer plastic material, and the flexible or rigid substrate 201 may block oxygen and moisture and prevent moisture or impurities from diffusing into the display panel through the substrate 201. A driving circuit layer 206, a light emitting layer 202, a touch layer 203, and a light shielding layer 205 are provided on the substrate 201. The driving circuit layer 206 includes a pixel circuit (not shown in the drawing), which may be a circuit structure of 2T1C, 4T1C, 7T2C, 8T1C, 8T2C, etc., and the pixel circuit includes a plurality of thin film transistors (Thin Film Transistor, TFT), a storage capacitor, a metal wiring, etc., and the like (not shown in the drawing), the drain electrode of the thin film transistor TFT is electrically connected to the anode electrode of the light emitting unit 21 in the light emitting layer 202, and the driving circuit layer 206 is used to supply a driving voltage to the light emitting unit 21 to drive the light emitting unit 21 to emit light. The light emitting layer 202 includes a plurality of light emitting units 21 for emitting light for display, and the light emitting units 21 in the present example are illustrated by OLED, and the light emitting units 21 include a first electrode 211, a light emitting body 212, and a second electrode 213, wherein the first electrode 211 is an anode of the light emitting unit 21, the second electrode 213 is a cathode of the light emitting unit 21, the second electrode 213 may be a whole layer structure or a non-whole layer structure, and the first electrode 211 and the second electrode 213 may be made of transparent conductive materials, such as ITO (indium tin oxide), IZO (indium zinc oxide), ITO/Ag/ITO, and the like; or the first electrode 211 and the second electrode 213 are different in material, the first electrode 211 is made of a transparent conductive material, and the second electrode 213 may be made of a metal such as aluminum (Al), silver (Ag), chromium (Cr), titanium (Ti), tantalum (Ta), molybdenum (Mo), or an alloy thereof. The light-emitting material of the light-emitting body 212 may be a low-molecular or high-molecular organic material. The drain electrode of the thin film transistor TFT in the driving circuit layer 206 is electrically connected to the first electrode 211 of the light emitting unit 21 through a connection electrode to drive the light emitting unit 21 to emit light.
With continued reference to fig. 4, the touch layer 203 includes at least a first organic layer 31 and a first touch metal layer 32, where the first organic layer 31 may play a role in electrical insulation, and the first touch metal layer 32 may be a touch electrode source drain data line layer (TM 2) for transmitting a touch driving signal or a touch sensing signal. The material of the first touch pattern 321 includes Cr, pt, ru, au, ag, mo, al, W, cu and/or AlNd metal, or the material includes ITO, GIZO, GZO, IZO (InZnO) or AZO (AlZnO) metal or conductive oxide, and the like. The first organic layer 31 is made of an organic material, such as polyimide, and polynaphthaleneEthylene glycol acid esters, polycarbonates, polyarylates, polyethersulfones, and the like. Patterning the first organic layer 31 on the light emitting side of the light emitting unit 21 by an exposure process along the Z direction in the figure, i.e. in the thickness direction of the display panel, exposing and developing the first organic layer 31 on the light emitting side of the light emitting unit 21 along the Z direction in the figure, and obtaining a plurality of openings D in the first organic layer 31, wherein the openings D cover the light emitting unit 21 by orthographic projection of the openings D on the XY plane where the substrate 201 is located, and the openings D can improve the light emitting brightness of the light emitting unit 21; meanwhile, since the first organic layer 31 is subjected to the patterning exposure developing treatment, which is equivalent to the increase of the overall light transmittance of the first organic layer 31, the surface of the opening of the first organic layer 31 is increased, and the organic layer has fluidity, and after the opening is provided, the rest of the organic layer flows toward the opening, so that the thickness of the finally formed organic layer is smaller than that of the organic layer without the opening, and further, since the first organic layer 31 is exposed, the film thickness of the first organic layer 31 left on the substrate 201 after the exposure developing is reduced compared with the whole exposure, the film thickness limit of the exposure machine is widened, and the effect of thinning the first organic layer 31 in the non-opening area is achieved. Exemplary, the resulting overall thickness h of the first organic layer 31 1 Less than 0.5um. By the whole thickness h 1 The thinner first organic layer 31 is beneficial to reducing the bending radius of the display panel and improving the bending performance of the display panel, and can avoid short circuit and open circuit of the first touch metal layer 32 caused by the breakage of the inorganic film layer; on the other hand, the step from the edge of the display area AA to the non-display area NA of the first organic layer 31 may be lower, so as to avoid the problem that the first touch metal layer 32 (TM 2) in the line-changing deep hole in the non-display area NA is discontinuous in film formation and the electrical failure caused by the residual step bottom exists during etching the first touch metal layer 32 (TM 2) of the touch layer 203.
It should be noted that, the display panel 200 provided in the embodiment of the present invention further includes other film layers, such as an encapsulation layer, and the plurality of film layers cooperate to realize the normal display of the display panel, which are clearly understood and appreciated by those skilled in the art on the basis of the prior art, and are not released here. The "patterning" herein specifically refers to a non-integral layer structure, that is, a pattern structure formed by forming an integral layer of material in the manufacturing process and then exposing and etching the integral layer of material to obtain a specific shape; or, the whole layer of material is formed in the manufacturing process, and then the pattern structure with other preparation process shapes is adopted, so that the implementation of the patterning preparation process is not limited.
In summary, the structure and the process of the TPOT touch screen are improved, the dielectric layer of the touch control layer of the display panel is made of organic materials, the first organic layer 31 is subjected to patterning exposure treatment, and the first organic layer on the light emitting side of the light emitting unit is hollowed, so that the film thickness limit of the exposure machine is broken through, the thickness of the first organic layer is reduced to be less than 0.5um, the bending radius of a flexible product is reduced, the bending performance of the flexible product is improved, and the touch control and display of the display panel are ensured to be influenced.
With continued reference to fig. 3 and 4, the display panel includes a display area AA and a non-display area NA, the non-display area NA at least partially surrounding the display area AA; the touch control layer 203 further includes a second touch control metal layer 33, where the second touch control metal layer 33 is located at a side of the first organic layer 31 near the light emitting layer 202; the second touch metal layer 33 includes a plurality of second touch patterns 331; the first organic layer 31 further includes a plurality of through holes W, and the first touch pattern 321 is connected to the second touch pattern 331 through the through holes W; the through hole W comprises a first through hole W 1 And a second through hole W 2 First through hole W 1 Located in the display area AA, the second through hole W 2 Is located in the non-display area NA; width W of first via hole W in first direction (X direction in the figure) 1 And a second through hole W 2 Width w in the first direction (X direction in the figure) 2 Different; wherein the first direction is parallel to the plane of the substrate 201.
Specifically, as shown in fig. 3-4, in some embodiments, the touch layer 203 further includes a second touch metal layer 33, and the second touch metal layer 33 may be a touch active layer or a scan line layer (TM 1). Patterning the second touch metal layer 33 to obtain a plurality of second touch patterns 331, wherein the first organic layer 31 covers the second touch patterns 331, and the second touch patterns 331 can be arranged to be identical to the first touch patternsThe second touch pattern 331 is electrically connected to the first touch pattern 321 through the via W in the first organic layer 31 by a mechanism corresponding to the pattern 321. The touch layer 203 may further include a plurality of sensors (not shown), and the first touch pattern 321 may serve as a connection wiring to connect the plurality of sensors. The material of the second touch pattern 331 includes Cr, pt, ru, au, ag, mo, al, W, cu and/or AlNd, or includes ITO, GIZO, GZO, IZO (InZnO) or AZO (AlZnO) metal or conductive oxide, and the like. The first touch pattern 321 and the second touch pattern 331 may be located in a display area AA and a non-display area NA, and in the display area AA, the first through hole W 1 Also referred to as a via hole, the first touch pattern 321 and the second touch pattern 331 pass through the first via hole W 1 The electric connection can be used for transmitting different-layer touch control driving signals or touch control induction signals; in the non-display area NA, the second via hole W 2 The first touch pattern 321 and the second touch pattern 331 may also be line-changing holes and pass through the second through holes W 2 And an electrical connection for transmitting the non-display area NA signal to the display area AA. The application discloses a first through hole W 1 And a second through hole W 2 The aperture size of the display area AA is designed differently, the widths of the via holes of the display area AA and the line changing holes of the non-display area NA are not consistent, and the first via hole W is marked along the X direction in the figure 1 Is w of width of 1 Note the second through hole W 2 Is w of width of 2 Exemplary, set w 1 ＜w 2 The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, set w 1 ＞w 2 The method comprises the steps of carrying out a first treatment on the surface of the Setting w by differentiation 1 And w 2 The same set of mask etching process can be used to etch and prepare the first through hole W on the first organic layer 31 at the same time 1 And a second through hole W 2 The signal line connection of the display area AA and the non-display area NA is satisfied. At the same time, further by adjusting the first through hole W 1 And a second through hole W 2 The width of the first through hole W in the display area AA 1 The second touch pattern 331 (TM 1) is not over etched and is not a second via W in the display area NA 2 The first organic layer 31 is etched, and the size of the opening D and the bottom angle (tip) of the opening D in the first organic layer 31 are further modified by adjusting the etching process, so that the non-display of the touch layer 102 can be reducedThe edge steps of the display area NA can avoid the problem of electrical failure caused by residues when the first touch pattern 321 (TM 2) is etched.
Fig. 5 is another schematic cross-sectional view along the direction BB' in fig. 2. On the basis of the above embodiment, as further shown in fig. 4 and 5, the display panel 200 further includes a filter layer 204, where the filter layer 204 is located on a side of the touch layer 203 away from the light emitting layer 202; the filter layer 204 includes a plurality of filter structures 41, and an orthographic projection of the filter structures 41 on the first plane covers the light emitting unit 21 and at least part of the side wall of the opening D; wherein the refractive index of the filter layer 204 is greater than the refractive index of the first organic layer 31.
Specifically, in the display panel 200 with integrated touch and light filtering as shown in fig. 4 and 5, the light filtering structure 41 is located on the light emitting side of the light emitting unit 21, and the light filtering color of the light filtering structure 41 is the same as the light emitting color of the light emitting unit 21, so as to filter the light emitted by the light emitting unit 21 and improve the light emitting brightness of the light emitting unit 21. According to the light emitting device, materials of the light filtering layer 204 and the first organic layer 31 are reasonably selected, the refractive index n1 of the light filtering layer 204 is larger than the refractive index n2 of the first organic layer 31, namely n1 is larger than n2, the light filtering structure 41 and the first organic layer 31 form an MLP (Micro Lens Pattern ) structure, light rays S emitted by the light emitting unit 21 are easy to reflect, refract and totally reflect at the interface of the light rays S and the interface of the light rays S, are emitted after being deflected towards the front view angle of the display panel 200, and therefore the front view angle light emitting brightness of the display panel is improved, and the light emitting efficiency of the light emitting unit 21 is improved.
In some embodiments, with continued reference to fig. 4, the side walls of the opening D are beveled and face the light emitting side of the light emitting unit 21. The side wall of the opening D is the interface m between the filter structure 41 and the first organic layer 31 1 Interface m is to 1 The slope surface is arranged to face the light emitting side of the light emitting unit 21, so that the light S is emitted after being deflected to the front viewing angle of the display panel 200.
In some embodiments, with continued reference to fig. 5, the sidewall of the opening D is concave and faces the light emitting side of the light emitting unit 21. The sidewall of the opening D is the interface m between the filter structure 41 and the first organic layer 31 2 The side wall m of the opening D 2 Is arranged asThe concave surface can gather the light S, and further improves the light emitting efficiency of the light emitting unit 21 by deflecting the light S emitted from the light emitting unit 21 toward the forward viewing angle.
On the basis of the above embodiment, as shown in fig. 4 and 5, the display panel 200 further includes a light shielding layer 205, where the light shielding layer 205 is located on a side of the touch layer 203 away from the light emitting layer 202; the light shielding layer 205 includes a plurality of light shielding structures 51; the orthographic projection of the light shielding structure 51 on the first plane at least partly surrounds the light emitting unit 21.
Specifically, as shown in fig. 4 and 5, in the integrated touch and filter display panel 200, the light shielding layer 205 includes a plurality of light shielding structures 51, and the light shielding structures 51 are made of black light absorbing material. Along a first direction Z in the drawing, a light shielding structure 51 is disposed at least partially surrounding the light emitting unit 21 and at least partially overlapping the light emitting unit 21, and a light filtering structure 41 covers the light shielding structure 51 and the opening D. The light shielding structure 51 can shield part of large-viewing-angle light emitted by the two adjacent light emitting units 21, so that crosstalk of display light of the two adjacent light emitting units 31 is avoided, and the definition of the display panel is improved.
On the basis of the above embodiment, with continued reference to fig. 4 and 5, the first touch metal layer 32 includes a plurality of first touch patterns 321; the orthographic projection part of the first touch pattern 321 on the first plane surrounds the light emitting unit 21; at least a portion of the light shielding structure 51 covers the portion of the first touch pattern 321.
Specifically, as shown in fig. 4 and fig. 5, the first touch pattern 321 may be a touch metal trace, and is used for transmitting a touch driving signal or a touch sensing signal. Around the light emitting side of some of the light emitting units 21, the light shielding structure 51 covers the first touch pattern 321 and the first organic layer 31; around the light emitting side of some of the light emitting units 21, the light shielding structure 51 directly covers the first organic layer 31. Through covering the first touch pattern 321 with the shading structure 51, the shading structure 51 can shade external environment light, so that the first touch pattern 321 is prevented from reflecting the external environment light, and the anti-reflection effect is achieved.
In some embodiments, as shown in fig. 4 and 5, according to the structural layout of the first touch pattern 321, there is a film layer structure under a portion of the light shielding structure 51 without the first touch pattern 321 and the pattern structure 61.
FIG. 6 is another cross-sectional schematic view along BB' in FIG. 2; fig. 7 is another schematic cross-sectional view along the direction BB' in fig. 2. On the basis of the above embodiment, referring to fig. 6 and 7, the display panel 200 further includes a second organic layer 206, where the second organic layer 206 is located on a side of the touch layer 203 away from the light emitting layer 202; as shown in fig. 6, the second organic layer 206 has a whole layer structure; alternatively, as shown in fig. 7, the second organic layer 206 includes a plurality of pattern structures 61, the pattern structures 61 are located at a side of the first touch pattern 321 away from the first organic layer 31, and the light shielding structure 51 covers the pattern structures 61 and the first touch pattern 321.
As shown in fig. 6, a second organic layer 206 may be added between the light shielding structure 51 and one side of the touch control layer 203 away from the light emitting layer 202, where the second organic layer 206 may be a whole layer structure, and plays a role in planarization; the light filtering structure 41 covers the light shielding structure 51 and the second organic layer 206. The material of the second organic layer 206 includes, but is not limited to, polyimide, polyethylene naphthalate, polycarbonate, polyarylate, polyethersulfone, and the like.
On the basis of the above embodiment, referring to fig. 6, the second organic layer 206 has a whole layer structure, and the refractive index of the second organic layer 206 is greater than that of the first organic layer 31.
Specifically, as further shown in fig. 6, the second organic layer 206 covers the pattern structure 61 and the first organic layer 31, and the second organic layer 206 and the sidewall m of the opening D 3 Direct contact, setting the refractive index n of the second organic layer 206 3 A refractive index n greater than that of the first organic layer 31 2 I.e. n 3 ＞n 2 The second organic layer 206 and the first organic layer 31 can be formed into an MLP structure, and the light S emitted from the light emitting unit 21 is at the interface m between the two 3 Reflection, refraction and total reflection are easy to occur, so that light S is emitted after being deflected towards the front view angle of the display panel 200, and the front view angle light emitting brightness of the display panel and the light emitting efficiency of the light emitting unit 21 are improved.
It should be noted that, the thickness of the second organic layer 206 is reasonably controlled to satisfy the bending performance of the display panel 200.
In some embodiments, with continued reference to FIG. 6, the refractive index n of the filter structure 41 may also be provided 1 Refractive index n greater than second organic layer 206 3 I.e. n 1 ＞n 3 ＞n 2 So that the light S is gathered toward the Z direction in the figure, thereby improving the front view angle light-emitting brightness of the display panel and improving the light-emitting efficiency of the light-emitting unit 21.
In one possible embodiment, as shown in fig. 7, the second organic layer 206 is patterned, and the second organic layer 206 is patterned to form a plurality of pattern structures 61, where the pattern structures 61 are used as masks for etching the first touch patterns 321, and the pattern structures 61 at least partially cover the first touch patterns 321 along the Z direction in fig. 7. The pattern structure 61 may be a PR (photo resist) Photoresist for blocking a film layer under the etched pattern structure 61 to obtain the first touch pattern 321, wherein the PR Photoresist may be a positive Photoresist or a negative Photoresist. The light shielding structure 51 has fluidity, and flows to the sides of the pattern structure 61 and the first organic layer 31 in the process of preparing the light shielding structure 51, and the light shielding structure 51 directly covers the pattern structure 61 and the first organic layer 31, so that the light shielding structure 51 can be prevented from directly contacting the first touch pattern 321 below the light shielding structure, the short circuit of the first touch pattern 321 is avoided, and the normal transmission of touch signals is ensured. By adopting the structural design, the process of stripping the pattern structure 61 can be omitted, and a cover layer is not required to be prepared on the surface of the first touch pattern 321, so that the process cost is saved; since the pattern structure 61 is located above the first touch pattern 321, the light shielding structure 51 may be further raised, so as to increase the area of the side wall of the light shielding structure 51 facing the light emitting unit 21, thereby limiting the light emitting range of the light emitting unit 21 and avoiding light crosstalk between adjacent light emitting units 21.
In fig. 7, the light shielding structure 51 covers the pattern structure 61 and the first organic layer 31, the light filtering structure 41 covers the light shielding structure 51 and the opening D of the first organic layer 31, and the light filtering structure 41 and the sidewall m of the opening D 4 Direct contact, sidewall m of FIG. 6 3 And sidewall m in FIG. 7 4 The surface shape of (2) can also be plane orConcave surfaces are not shown in the drawings of the embodiments of the present application.
FIG. 8 is a top view of another display panel according to an embodiment of the present invention; fig. 9 is a schematic view of the optical path of a section along the direction CC' in fig. 8. On the basis of the above-described embodiment, as shown in conjunction with fig. 8 and 9, the light emitting unit 21 includes the first light emitting unit 211 and the second light emitting unit 212, and the opening D includes the first opening D 1 And a second opening D 2 First opening D 1 The front projection in the first plane overlaps with the front projection of the first light emitting unit 211 in the first plane, the second opening D 2 The front projection in the first plane overlaps with the front projection of the second light emitting unit 212 in the first plane; the first light emitting unit 211 and the second light emitting unit 212 emit light of different colors; wherein the first opening D 1 Orthographic projection on a first plane and a second opening D 2 The orthographic projection shape in the first plane is different.
Specifically, as shown in fig. 8, the light emitting unit 21 includes a plurality of light emitting units with different light emitting colors, such as a red light emitting unit R, a green light emitting unit G, and a blue light emitting unit B, and a first opening D is formed in the first organic layer 31 on the light emitting side of the first light emitting unit 211 by taking any two of the first light emitting unit 211 and the second light emitting unit 212 with different light emitting colors as an example 1 A second opening D is formed in the first organic layer 31 on the light emitting side of the second light emitting unit 212 2 First opening D 1 The front projection shape on the XY plane is a circle, and the second opening D 2 The orthographic projection shape on the XY plane is hexagonal, and the two are different. In general, the light emitting units 21 are arranged in a regular pattern similar to that of a similar pattern, and the regular pattern is prone to generate chromatic dispersion of the point light sources of the screen, if the openings D in the first organic layer 31 on the light emitting side of all the light emitting units 21 are regularly designed and hole digging is not formed due to shape difference, the reflection and refraction of the light emitted by each light emitting unit 21 by the openings D in the first organic layer 31 in the regular pattern are also regular, and color separation is easily seen under each view angle under the chromatic dispersion effect, so as to affect the display effect. Based on this, the embodiment of the present application may make the first opening D on the light emitting side of the first light emitting unit 211 with different light emitting colors 1 And the second light emitting unit 212 emits lightSecond opening D of side 2 Is shown in connection with FIG. 9 by using a first opening D 1 Breaking the reflection and refraction rule of the light emitted by the first light-emitting unit 211 and utilizing the second opening D 2 Breaking the reflection and refraction rule of the light emitted from the second light-emitting unit 212, the light emitted from the first light-emitting unit 211 and the second light-emitting unit 212 is irregular, when the observer views the display panel 200 at the same viewing angle, the first opening D is formed on the normal plane of the light-emitting unit 21 and the human eyes relative to the screen 1 And a second opening D 2 The pattern edges of the light refraction are not parallel, the light emergent angles of the refraction light are different, the emergent light of the first light-emitting unit 211 and the emergent light of the second light-emitting unit 212 are uniformly mixed at each view angle, and color separation is not easy to occur. Similarly, when the third light emitting unit 213 is present, a third opening D is formed in the first organic layer 31 on the light emitting side of the third light emitting unit 213 3 Third opening D 3 The orthographic projection shape in the XY plane is irregular and is adjacent to the first opening D 1 A second opening D 2 And a third opening D 3 The edges of the three patterns are not parallel, the light emergent angles of the refracted light are different, the refracted light does not completely fall on the normal plane, all positions in the display panel 200 are the same, the light refracted by the similar pixels is not seen by each view angle, but the light refracted to the personnel at a plurality of different positions is mixed, the mixture is uniform at each view angle, and color separation is not easy to occur, so that the chromatic dispersion effect is improved, the color separation is avoided from being seen under each view angle, and the display effect of the display panel is improved.
FIG. 10 is a top view of another display panel according to an embodiment of the present invention; fig. 11 is a top view of another display panel according to an embodiment of the present invention. On the basis of the above-described embodiment, as shown in conjunction with fig. 10 and 11, the light emitting unit 21 includes the third light emitting unit 213 and the fourth light emitting unit 214, and the opening D includes the third opening D 3 And a fourth opening D 4 Third opening D 3 The front projection in the first plane overlaps with the front projection of the third light emitting unit 213 in the first plane, and the fourth opening D 4 The orthographic projection in the first plane intersects the orthographic projection of the fourth light emitting unit 214 in the first planeStacking; the third light emitting unit 213 is different from the fourth light emitting unit 214 in emission color; third opening D 3 Size of orthographic projection on first plane and fourth opening D 4 The size of the orthographic projection in the first plane is different.
Specifically, on the basis of the above embodiment, the sizes of the openings D on the light emitting side of the light emitting units 21 with different light emitting colors may be differently designed, and as shown in fig. 10 and 11, taking any two third light emitting units 213 and fourth light emitting units 214 with different light emitting colors as an example, a third opening D is formed in the first organic layer 31 on the light emitting side of the third light emitting unit 213 3 A fourth opening D is formed in the first organic layer 31 on the light emitting side of the fourth light emitting unit 214 4 Third opening D 3 Size of orthographic projection in XY plane and fourth opening D 4 The size of the orthographic projection on the XY plane is different, and a third opening D is utilized 3 Breaks the reflection and refraction rule of the light emitted by the third light-emitting unit 213 and uses the fourth opening D 4 The reflection and refraction rule of the light emitted from the fourth light emitting unit 214 is broken, and finally the light emitted from the third light emitting unit 213 and the fourth light emitting unit 214 at the visual angle is irregular, so that the dispersion effect is improved. And so on, when there is a fifth light emitting unit (not shown), the light emitting side of the fifth light emitting unit corresponds to the fifth opening, and the third opening D 3 Fourth opening D 4 The size of the orthographic projections in the first plane are all different, thereby avoiding color separation at each viewing angle.
Wherein the dimensions may refer to the areas being different in the same shape or different in different shapes, as shown in fig. 10, a possible embodiment of the third opening D 3 Shape of orthographic projection in XY plane and fourth opening D 4 The shape of orthographic projection on the XY plane is circular, and the difference is that the circular sizes are different; one possible embodiment is shown in fig. 11, a third opening D 3 Shape of orthographic projection in XY plane and fourth opening D 4 The shape of the orthographic projection on the XY plane is different, and the area size is different.
FIG. 12 is a schematic illustration of an embodiment of the inventionAs another top view of the display panel, as shown in fig. 12, the light emitting unit 21 includes a fifth light emitting unit 215 and a sixth light emitting unit 216, and the opening D includes a fifth opening D 5 And a sixth opening D 6 Fifth opening D 5 The front projection in the first plane overlaps with the front projection of the fifth light emitting unit 215 in the first plane, the sixth opening D 6 The front projection in the first plane overlaps with the front projection of the sixth light emitting unit 216 in the first plane; the fifth light emitting unit 215 is different from the sixth light emitting unit 216 in light emission color; the fifth light emitting unit 215 is disposed at the center of the orthographic projection of the first plane and the fifth opening D 5 Distance from center position of orthographic projection on first plane and center position of orthographic projection on first plane of sixth light emitting unit 216 and sixth opening D 6 The distance at the center of the orthographic projection of the first plane is different.
Specifically, as shown in fig. 12, on the basis of the above embodiment, the center position of the opening D on the light emitting side of the light emitting unit 21 with different light emitting colors may be differently designed, and taking any two fifth light emitting units 215 and 216 with different light emitting colors as an example, a fifth opening D is formed in the first organic layer 31 on the light emitting side of the fifth light emitting unit 215 5 A sixth opening D is formed in the first organic layer 31 on the light emitting side of the sixth light emitting unit 216 6 . Exemplary, fifth opening D 5 Orthographic projection in XY plane and sixth opening D 6 The front projections in the XY plane may be the same or different, and in FIG. 12, the front projections each have a regular hexagonal shape, and the fifth opening D 5 The center of the orthographic projection on the XY plane and the center of the orthographic projection on the XY plane of the fifth light emitting unit 215 may be overlapped, non-overlapped, or randomly distributed at the fifth opening D 5 In the orthographic projection of the XY plane, only the fifth opening D is required to be ensured 5 The front projection on the XY plane covers the front projection of the fifth light emitting unit 215 on the XY plane; similarly, a sixth opening D 6 The center of the orthographic projection on the XY plane and the center of the orthographic projection on the XY plane of the sixth light emitting unit 216 may be overlapped, non-overlapped or randomly distributed on the sixth opening D 6 In the orthographic projection of the XY plane, only the following is ensuredSixth opening D 6 The front projection on the XY plane may cover the front projection of the sixth light emitting unit 216 on the XY plane, and the fifth light emitting unit 215 is arranged at the center position of the front projection on the first plane and the fifth opening D 5 Distance Δ1 of center position of orthographic projection on first plane and center position of orthographic projection on first plane of sixth light emitting unit 216 and sixth opening D 6 The distance Δ2 differs at the center position of the orthographic projection of the first plane.
Whereby a fifth opening D of non-specification arrangement can be obtained 5 And a sixth opening D 6 By means of a fifth opening D 5 Breaking the reflection and refraction rule of the light emitted by the fifth light-emitting unit 215 and utilizing the sixth opening D 6 The reflection and refraction rule of the light emitted from the sixth light emitting unit 216 is broken, and finally the light emitted from the fifth light emitting unit 215 and the sixth light emitting unit 216 at the visual angle is irregular, so that the dispersion effect is improved. And so on, when there is a seventh light emitting unit (not shown), the light emitting side of the seventh light emitting unit corresponds to the seventh opening, and the fifth opening D 5 And a sixth opening D 6 The distances at the center positions of the orthographic projections of the first plane are different to improve the dispersion effect, thereby avoiding color separation at each viewing angle.
It should be noted that, as shown in fig. 8 to 12, the first light emitting unit 211, the third light emitting unit 213, and the fifth light emitting unit 215 may be the same or different light emitting units, and the second light emitting unit 212, the fourth light emitting unit 214, and the sixth light emitting unit 216 may be the same or different light emitting units; in other implementations, as shown in fig. 8-12, the design of the opening D on the light emitting side of the light emitting unit 21 with the same light emitting color may be the same regular design, and the opening D on the light emitting side of the light emitting unit 21 with different light emitting colors may be the irregular design, and the opening D may be the irregular hole.
In fig. 8 to 12, the first organic layer 31 further includes a plurality of through holes (not shown in the drawings), and the structure of the through holes is shown in fig. 3, which is not shown in the drawings.
Based on the same inventive concept, the embodiment of the invention also provides a display device. Fig. 13 is a top view of a display device according to an embodiment of the present invention, and as shown in fig. 13, the display device includes any one of the display panels provided in the foregoing embodiments. Illustratively, as shown in fig. 13, the display device 300 includes a display panel 200. Therefore, the display device also has the advantages of the display panel in the above embodiment, and the same points can be understood by referring to the explanation of the display panel, and the description thereof will not be repeated.
The display device 300 provided in the embodiment of the present invention may be a mobile phone as shown in fig. 13, or any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle-mounted display, industrial control equipment, medical display screen, touch interactive terminal, etc., which is not particularly limited by the embodiment of the invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (13)
1. The display panel is characterized by comprising a substrate base plate, and a light-emitting layer and a touch control layer which are positioned on one side of the substrate base plate;
the light emitting layer includes a plurality of light emitting units;
the touch control layer comprises a first organic layer and a first touch control metal layer, and the first touch control metal layer is positioned on one side of the first organic layer far away from the light-emitting layer;
the first organic layer comprises a plurality of openings, and orthographic projection of the openings on a first plane covers the light emitting units;
the first plane is a plane where the substrate base plate is located.
2. The display panel of claim 1, further comprising a filter layer located on a side of the touch layer remote from the light emitting layer;
the light filtering layer comprises a plurality of light filtering structures, and the orthographic projection of the light filtering structures on the first plane covers the light emitting unit and at least part of the side walls of the opening;
wherein the refractive index of the filter layer is greater than the refractive index of the first organic layer.
3. The display panel according to claim 2, wherein a sidewall of the opening is a slope and faces a light emitting side of the light emitting unit.
4. The display panel of claim 2, wherein a sidewall of the opening is concave and faces a light emitting side of the light emitting unit.
5. The display panel according to claim 1, further comprising a light shielding layer located on a side of the touch layer away from the light emitting layer;
the light shielding layer comprises a plurality of light shielding structures; an orthographic projection of the shading structure on the first plane at least partially surrounds the light emitting unit.
6. The display panel of claim 5, wherein the first touch metal layer comprises a plurality of first touch patterns;
the orthographic projection part of the first touch pattern on the first plane surrounds the light-emitting unit; at least part of the shading structure covers the part of the first touch pattern.
7. The display panel of claim 6, further comprising a second organic layer located on a side of the touch layer remote from the light emitting layer;
the second organic layer is of a whole layer structure;
or, the second organic layer includes a plurality of pattern structures, the pattern structures are located at one side of the first touch pattern away from the first organic layer, and the light shielding structure covers the pattern structures and the first touch pattern.
8. The display panel according to claim 7, wherein the second organic layer has a monolithic structure, and a refractive index of the second organic layer is greater than a refractive index of the first organic layer.
9. The display panel of claim 1, wherein the light emitting units comprise a first light emitting unit and a second light emitting unit, the opening comprises a first opening and a second opening, a front projection of the first opening on the first plane overlaps with a front projection of the first light emitting unit on the first plane, and a front projection of the second opening on the first plane overlaps with a front projection of the second light emitting unit on the first plane; the first light emitting unit and the second light emitting unit have different light emitting colors;
wherein, the orthographic projection of the first opening on the first plane is different from the orthographic projection of the second opening on the first plane.
10. The display panel of claim 1, wherein the light emitting units comprise a third light emitting unit and a fourth light emitting unit, the openings comprise a third opening and a fourth opening, an orthographic projection of the third opening on the first plane overlaps an orthographic projection of the third light emitting unit on the first plane, and an orthographic projection of the fourth opening on the first plane overlaps an orthographic projection of the fourth light emitting unit on the first plane; the third light emitting unit and the fourth light emitting unit have different light emitting colors;
the size of the orthographic projection of the third opening on the first plane is different from the size of the orthographic projection of the fourth opening on the first plane.
11. The display panel of claim 1, wherein the light emitting units comprise a fifth light emitting unit and a sixth light emitting unit, the openings comprise a fifth opening and a sixth opening, an orthographic projection of the fifth opening on the first plane overlaps an orthographic projection of the fifth light emitting unit on the first plane, and an orthographic projection of the sixth opening on the first plane overlaps an orthographic projection of the sixth light emitting unit on the first plane; the fifth light emitting unit and the sixth light emitting unit emit light of different colors;
the distance between the center position of the orthographic projection of the fifth light emitting unit on the first plane and the center position of the orthographic projection of the fifth opening on the first plane is different from the distance between the center position of the orthographic projection of the sixth light emitting unit on the first plane and the center position of the orthographic projection of the sixth opening on the first plane.
12. The display panel of claim 1, wherein the display panel comprises a display region and a non-display region, the non-display region at least partially surrounding the display region;
the touch control layer further comprises a second touch control metal layer, and the second touch control metal layer is positioned on one side of the first organic layer close to the light-emitting layer; the second touch metal layer comprises a plurality of second touch patterns; the first organic layer further comprises a plurality of through holes, and the first touch pattern is connected with the second touch pattern through the through holes;
the through holes comprise a first through hole and a second through hole, the first through hole is positioned in the display area, and the second through hole is positioned in the non-display area; the width of the first through hole along the first direction is different from the width of the second through hole along the first direction;
wherein the first direction is parallel to a plane of the substrate.
13. A display device comprising the display panel of any one of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311232113.XA CN117289822A (en) | 2023-09-21 | 2023-09-21 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311232113.XA CN117289822A (en) | 2023-09-21 | 2023-09-21 | Display panel and display device |
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| CN117289822A true CN117289822A (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311232113.XA Pending CN117289822A (en) | 2023-09-21 | 2023-09-21 | Display panel and display device |
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| CN (1) | CN117289822A (en) |
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- 2023-09-21 CN CN202311232113.XA patent/CN117289822A/en active Pending
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