CN112993185A - Display panel and display module - Google Patents
Display panel and display module Download PDFInfo
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- CN112993185A CN112993185A CN202110166675.3A CN202110166675A CN112993185A CN 112993185 A CN112993185 A CN 112993185A CN 202110166675 A CN202110166675 A CN 202110166675A CN 112993185 A CN112993185 A CN 112993185A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- 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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- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- 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
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Abstract
The application discloses display panel and display module assembly, display panel are provided with the drive base plate, include: the device comprises a pixel defining layer, a packaging layer, a first touch electrode layer, a second touch electrode layer and a shading layer; the pixel defining layer, the packaging layer, the first touch electrode layer and the light shielding layer are sequentially arranged on the driving side of the driving substrate; the second touch electrode layer is arranged between the packaging layer and the driving substrate; the first touch electrode layer comprises a plurality of first touch electrodes; the second touch electrode layer comprises a plurality of second touch electrodes; the light shielding layer comprises a light shielding pattern, and the orthographic projection of the light shielding pattern on the driving substrate covers the target projection, wherein the target projection comprises the orthographic projection of the first touch electrode on the driving substrate and the orthographic projection of the second touch electrode on the driving substrate. The application can solve the problem that the existing touch electrode reflects external light, improve the luminous efficiency of the panel and improve the display effect of the organic light-emitting display panel.
Description
Technical Field
The application relates to the technical field of display, especially, relate to a display panel and display module assembly.
Background
At present, the touch substrate is usually designed to be externally hung, i.e., the touch panel and the display panel are separately manufactured and then attached together by full lamination. However, the external-hanging touch substrate increases the overall thickness of the organic light emitting display module. With the development of science and technology, it has become the research direction of thinning the display module to set the touch function in the display panel.
However, since the touch function is implemented by the touch electrode, the touch electrode reflects external light to interfere with light emitted from the organic light emitting display panel, thereby affecting the display effect of the organic light emitting display panel.
Disclosure of Invention
The embodiment of the application provides a display panel and a display module, which can solve the problem of reflection of the existing touch electrode to external light, improve the luminous efficiency of the panel and improve the display effect of an organic light-emitting display panel.
In a first aspect, a display panel is provided with a driving substrate, including: the device comprises a pixel defining layer, a packaging layer, a first touch electrode layer, a second touch electrode layer and a shading layer;
the pixel defining layer, the packaging layer, the first touch electrode layer and the light shielding layer are sequentially arranged on the driving side of the driving substrate;
the second touch electrode layer is arranged between the packaging layer and the driving substrate;
the first touch electrode layer comprises a plurality of first touch electrodes;
the second touch electrode layer comprises a plurality of second touch electrodes;
the light shielding layer comprises a light shielding pattern, and the orthographic projection of the light shielding pattern on the driving substrate covers a target projection, wherein the target projection comprises the orthographic projection of the first touch electrode on the driving substrate and the orthographic projection of the second touch electrode on the driving substrate.
In one possible embodiment, the pixel defining layer defines a plurality of sub-pixel regions, and the sub-pixel regions are provided with organic light emitting structures;
the light shielding layer comprises a plurality of opening areas, and the opening areas are used for enabling light rays emitted by the organic light emitting structures to penetrate out;
the opening region is provided with a filter film, and the orthographic projection of the filter film on the driving substrate covers the orthographic projection of the corresponding sub-pixel region on the driving substrate.
In one possible embodiment, the second touch electrode layer is disposed between the pixel defining layer and the encapsulation layer.
In one possible implementation, the second touch electrode layer is disposed between the driving substrate and the pixel defining layer.
In one possible embodiment, the organic light emitting structure includes a first electrode, a light emitting layer and a second electrode, the light emitting layer being disposed between the first electrode and the second electrode;
the first electrode is used for being electrically connected with a driving device of the driving substrate;
the thickness of the second touch electrode in the direction perpendicular to the driving substrate is the thickness of the second touch electrode, the vertical distance between the surface of the light-emitting layer close to the driving substrate and the driving substrate is the light-emitting driving distance, and the thickness of the second touch electrode is larger than or equal to the light-emitting driving distance.
In a possible embodiment, the thickness of the second touch electrode ranges from 0.2 μm to 0.5 μm;
the value range of the light-emitting driving distance is 0.1-0.2 μm.
In a possible implementation manner, the first touch electrode and the second touch electrode intersect to define a touch sensing area, and the touch sensing areas are arranged in an array;
the orthographic projection of the touch sensing area on the driving substrate covers the orthographic projection of the sub-pixel areas on the driving substrate.
In one possible implementation, the first touch electrode layer includes a plurality of touch patterns, the touch patterns are electrically connected to the first touch electrodes, and the orthographic projection of the touch patterns on the driving substrate covers the touch electrode projection intersection, where the touch electrode projection intersection is an intersection of the orthographic projection of the first touch electrode on the driving substrate and the orthographic projection of the second touch electrode on the driving substrate;
and the orthographic projection of the shading graph on the driving substrate covers the orthographic projection of the touch graph on the driving substrate.
In a possible implementation manner, the second touch electrode layer includes a plurality of touch patterns, the touch patterns are electrically connected with the second touch electrodes, and the orthographic projection of the touch patterns on the driving substrate covers the touch electrode projection intersection, where the touch electrode projection intersection is an intersection of the orthographic projection of the first touch electrode on the driving substrate and the orthographic projection of the second touch electrode on the driving substrate;
and the orthographic projection of the shading graph on the driving substrate covers the orthographic projection of the touch graph on the driving substrate.
In a second aspect, a display module includes the display panel described in any of the above.
According to the display panel and the display module provided by the embodiment of the application, the first touch electrode layer and the second touch electrode layer are arranged in the display panel to achieve the built-in touch function of the display panel, so that an externally-hung touch substrate can be replaced, and the display module is thinned. In addition, the first touch electrode and the second touch electrode are arranged under the shading graph, namely, the orthographic projection of the shading graph on the driving substrate covers the orthographic projection of the first touch electrode on the driving substrate and the orthographic projection of the second touch electrode on the driving substrate, when the external light of the display panel is irradiated on the display panel, the shading graph can play a role in shading the external light of the first touch electrode and the second touch electrode, and the reflection effect of the first touch electrode and the second touch electrode on the external light can be avoided. If first touch-control electrode and second touch-control electrode set up in the position that shading figure can not cover, because first touch-control electrode and second touch-control electrode adopt metal material or other conducting material usually, all have certain light reflex effect, can reflect external light, the user then can see the bright line of a strip at display panel display side, influences display panel's display effect, produces relatively poor use sense organ to the user, user experience is relatively poor. Therefore, according to the display panel provided by the embodiment of the application, the first touch electrode and the second touch electrode are covered by the light shielding pattern in the orthographic projection on the driving substrate, so that the reflection effect of the first touch electrode and the second touch electrode on the external light can be avoided on the basis of realizing the built-in touch function, and the display effect can be improved.
Drawings
Fig. 1 is a schematic partial structure diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic cross-sectional view taken along A-A' of a partial structure of a display panel according to an embodiment of the present disclosure;
FIG. 3 is a schematic cross-sectional view of a partial structure of a display panel along C-C' according to an embodiment of the present disclosure;
fig. 4 is a schematic partial structure diagram of a pixel defining layer of a display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic view of a partial structure of a light-shielding layer of a display panel according to an embodiment of the present disclosure;
FIG. 6 is a schematic cross-sectional view taken along A-A' of a partial structure of a display panel according to an embodiment of the present disclosure;
FIG. 7 is a schematic cross-sectional view of a partial structure of a display panel along C-C' according to an embodiment of the present disclosure;
FIG. 8 is a schematic diagram illustrating a propagation path of light emitted by an organic light emitting structure in a display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic view illustrating another propagation path of light emitted by an organic light emitting structure in a display panel according to an embodiment of the present disclosure;
fig. 10 is a schematic diagram illustrating a positional relationship between a first touch electrode, a second touch electrode and a sub-pixel region in a display panel according to an embodiment of the present disclosure;
fig. 11 is a schematic view illustrating another positional relationship between a first touch electrode, a second touch electrode and a sub-pixel area in a display panel according to an embodiment of the present disclosure;
fig. 12 is a schematic view illustrating another positional relationship between a first touch electrode, a second touch electrode and a sub-pixel area in a display panel according to an embodiment of the present disclosure;
fig. 13 is a schematic structural diagram of a display panel module according to an embodiment of the present disclosure.
Detailed Description
In order to better understand the technical solutions provided by the embodiments of the present specification, the technical solutions of the embodiments of the present specification are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present specification are detailed descriptions of the technical solutions of the embodiments of the present specification, and are not limitations on the technical solutions of the embodiments of the present specification, and the technical features in the embodiments and examples of the present specification may be combined with each other without conflict.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The term "two or more" includes the case of two or more.
At present, because the touch function is realized through the touch electrode, the touch electrode reflects external light, and interferes light emitted by the organic light-emitting display panel, thereby affecting the display effect of the organic light-emitting display panel.
In view of the above, the present application provides a display panel, which can improve the above problems. In a possible implementation manner, for example, fig. 1 is a schematic partial structure diagram of a display panel provided in an embodiment of the present application; FIG. 2 is a schematic cross-sectional view taken along A-A' of a partial structure of a display panel according to an embodiment of the present disclosure; fig. 3 is a schematic cross-sectional view of a partial structure of a display panel along C-C' according to an embodiment of the present disclosure. With reference to fig. 1 to fig. 3, an embodiment of the present application provides a display panel provided with a driving substrate 100, the display panel including: the touch panel includes a pixel defining layer 200, an encapsulation layer 300, a first touch electrode layer 400, a second touch electrode layer 500, a light shielding layer 600 and a flat layer 700; the pixel defining layer 200, the packaging layer 300, the first touch electrode layer 400, the light shielding layer 600 and the flat layer 700 are sequentially arranged on the driving side of the driving substrate 100; it is easily understood that the side of the driving substrate 100 on which the driving devices, typically thin film transistors TFT, are disposed may be referred to as a driving side of the driving substrate 100. The first touch electrode layer 400 may include a plurality of first touch electrodes 410, and the second touch electrode layer 500 may include a plurality of second touch electrodes 510. It should be noted that fig. 2 only partially illustrates the structure of the display panel, and fig. 2 only illustrates one first touch electrode 410, and similarly, fig. 3 only illustrates one second touch electrode 510, and fig. 2 and fig. 3 are not intended to limit the present application specifically. The pixel defining layer 200 may define a plurality of pixel sub-regions, the pixel sub-regions are provided with organic light emitting structures 800 therein, each organic light emitting structure 800 may emit light of different colors, the pixel arrangement shown in fig. 1 is based on a red, green and blue color mixing mode, and each repeatedly arranged unit includes a first organic light emitting structure R emitting red light, a second organic light emitting structure G emitting green light and a third organic light emitting structure B emitting blue light, respectively; fig. 1 illustrates distribution patterns and area sizes of the first organic light emitting structure R, the second organic light emitting structure G, and the third organic light emitting structure B by way of example, and the illustration is not intended to be a specific limitation of the present application.
With continued reference to fig. 2 and fig. 3, the second touch electrode layer 500 may be disposed between the encapsulation layer 300 and the driving substrate 100, and the second touch electrode layer 500 shown in fig. 2 is disposed between the encapsulation layer 300 and the pixel defining layer 200, which is not limited in this application.
With reference to fig. 1 to 3, the light shielding layer 600 may include a light shielding pattern 610, and an orthographic projection of the light shielding pattern 610 on the driving substrate 100 covers a target projection, where the target projection may include an orthographic projection of the first touch electrode 410 on the driving substrate 100 and an orthographic projection of the second touch electrode 510 on the driving substrate 100.
It is easy to understand that the driving device on the driving substrate 100 can drive the organic light emitting structure 800 to emit light, the encapsulation layer 300 plays a role in protecting the organic light emitting structure 800, the light shielding pattern 610 can block light emitted by each organic light emitting structure 800, and can prevent edge color mixing of light emitted by two adjacent organic light emitting structures 800 with different colors, and the planarization layer 700 performs final planarization on all devices and film layers on the display panel. The first touch electrode 410 and the second touch electrode 510 can be used as Tx (driving trace) and Rx (sensing trace) for implementing a touch function, the first touch electrode 410 can be used as Tx or Rx, and the corresponding second touch electrode 510 is Rx or Tx, which is not particularly limited in this application. In addition, fig. 2 and fig. 3 only show the basic film layer structure of the display panel, and the display panel may further include other film layers, which is not particularly limited in the present application.
According to the display panel provided by the embodiment of the application, the first touch electrode layer 400 and the second touch electrode layer 500 are arranged in the display panel to realize the built-in touch function of the display panel, so that an externally-hung touch substrate can be replaced, and the thinning of the display module is realized. In addition, the first touch electrode 410 and the second touch electrode 510 are disposed right below the light-shielding pattern 610, that is, the orthographic projection of the light-shielding pattern 610 on the driving substrate 100 covers the orthographic projection of the first touch electrode 410 on the driving substrate 100 and the orthographic projection of the second touch electrode 510 on the driving substrate 100, when light outside the display panel is irradiated on the display panel, the light-shielding pattern 610 can shield the first touch electrode 410 and the second touch electrode 510 from outside light, and the reflection effect of the first touch electrode 410 and the second touch electrode 510 from outside light can be avoided. If the first touch electrode 410 and the second touch electrode 510 are disposed at positions where the shading pattern 610 cannot be covered, since the first touch electrode 410 and the second touch electrode 510 are usually made of metal materials or other conductive materials, and both have a certain light reflection effect, external light can be reflected, and a user can see a bright line on the display side of the display panel, which affects the display effect of the display panel, and causes poor use sense to the user, which results in poor user experience. Therefore, according to the display panel provided in the embodiment of the application, the first touch electrode 410 and the second touch electrode 510 are covered by the light-shielding pattern 610 in an orthographic projection manner on the driving substrate 100, so that on the basis of realizing the built-in touch function, the reflection effect of the first touch electrode 410 and the second touch electrode 510 on the external light can be avoided, and the display effect can be improved.
In a possible implementation manner, fig. 4 is a schematic partial structure diagram of a pixel defining layer of a display panel according to an embodiment of the present disclosure; fig. 5 is a schematic view of a partial structure of a light-shielding layer of a display panel according to an embodiment of the present disclosure; fig. 6 is another schematic cross-sectional view along a-a' of a partial structure of a display panel according to an embodiment of the present disclosure. Illustratively, as shown in fig. 4, the pixel defining layer 200 may define a plurality of sub-pixel regions 210. Referring to fig. 6, an organic light emitting structure 800 may be disposed within the sub-pixel region 210. As shown in fig. 5, the light-shielding layer 600 may include a plurality of open regions 620, and the light-shielding patterns 610 are in a nested relationship with the open regions 620. In conjunction with fig. 1 and 6, the open region 620 may be used to allow light emitted from the organic light emitting structure 800 to pass through.
As shown in fig. 6, a filter 900 may be disposed at a position corresponding to the opening region 620, and an orthographic projection of the filter 900 on the driving substrate 100 covers an orthographic projection of the corresponding sub-pixel region 210 on the driving substrate 100. The coverage here may be full coverage or partial coverage. Corresponding to the color mixing scheme of the first organic light emitting structure R, the second organic light emitting structure G, and the third organic light emitting structure B, the filter 900 may include a first filter 910, a second filter 920, and a third filter, and fig. 6 does not intercept the positions of the second organic light emitting structure G and the third filter due to the position relationship of the cross section. The filter film 900 can transmit light emitted by the organic light emitting structure 800, for example, the first organic light emitting structure R emits red light, and the corresponding first filter film 910 only transmits red light, and the other light does not transmit; similarly, the second organic light emitting structure G emits green light, and the corresponding third filter film only transmits green light; the third organic light emitting structure B emits blue light, and the corresponding second filter 920 only transmits the blue light.
The display panel that this application embodiment provided can play the effect of falling the reflection to the display panel light to the external world through setting up filter coating 900, can replace external hanging polaroid, and external hanging polaroid utilizes and plays the effect of falling the reflection to the optical effect of external natural light. The filter film provided by the embodiment of the application is used for blocking light rays except for target light rays from transmitting, and only transmitting the light rays emitted in the corresponding sub-pixel region, so that the effect of reducing the reflection of the external light rays is achieved. It is easy to understand that the target light is the light emitted by the organic light emitting structure corresponding to the filter. The polaroid is cancelled, and the display module can be further thinned by arranging the filter membrane in the display panel, so that the display effect is improved, and the user experience is enhanced.
In one possible implementation, as shown in fig. 3, the second touch electrode layer 500 is disposed between the pixel defining layer 200 and the packaging layer 300.
In a possible implementation manner, fig. 7 is another schematic cross-sectional view of a partial structure of a display panel along C-C' according to an embodiment of the present application. As shown in fig. 7, the second touch electrode layer 500 is disposed between the driving substrate 100 and the pixel defining layer 200.
With continued reference to fig. 7, the organic light emitting structure 800 may include a first electrode 810, a light emitting layer 820, and a second electrode 830, the light emitting layer 820 being disposed between the first electrode 810 and the second electrode 830; the first electrode 810 may be used to electrically connect with a driving device of the driving substrate 100. The materials of the light emitting layers 820 corresponding to different organic light emitting structures 800 are different, for example, the light emitting layer 820 corresponding to the first organic light emitting structure R is made of a red light emitting material, the light emitting layer 820 corresponding to the second organic light emitting structure G is made of a green light emitting material, and the light emitting layer 820 corresponding to the third organic light emitting structure B is made of a blue light emitting material, which is not specifically limited in the application to the kind of the organic light emitting structure 800. For example, the first electrode 810 may serve as an anode of the organic light emitting structure 800, the second electrode 830 may serve as a cathode of the organic light emitting structure 800, and the second electrode 830 may serve as a cathode and may be a full-surface electrode layer. In conjunction with the second electrode 830 as a cathode, the driving device on the driving substrate 100 may drive the organic light emitting structure 800 to self-emit light through the first electrode 810.
With reference to fig. 7, the thickness of the second touch electrode 510 in the direction perpendicular to the driving substrate 100 is the second touch electrode thickness H1, the perpendicular distance between the surface of the light-emitting layer 820 close to the driving substrate 100 and the driving substrate 100 is the light-emitting driving distance H2, and the second touch electrode thickness H1 is greater than or equal to the light-emitting driving distance H2.
The display panel that this application embodiment provided, second touch-control electrode thickness H1 is more than or equal to luminous drive distance H2, and second touch-control electrode 510 can reflect the horizontal light that the luminescent layer sent for originally, the light of horizontal propagation can be followed display panel's display surface and is emergent, does not influence vertical light-emitting, can improve the light utilization ratio of self-luminous, can reduce the consumption.
For example, fig. 8 is a schematic view of a propagation path of light emitted by an organic light emitting structure in a display panel according to an embodiment of the present disclosure; fig. 9 is a schematic view of another propagation path of light emitted by an organic light emitting structure in a display panel according to an embodiment of the present disclosure. As shown in fig. 8, when the second touch electrode layer is not disposed between the pixel defining layer 200 and the driving substrate 100, the light emitted from the light emitting layer 820 may be emitted from the display panel by both the first light L1 and the second light L2, the third light L3 (similar to the transverse light) may be reflected back into the display panel, the third light L3 is trapped inside the film layer and is difficult to be emitted, and the light is wasted due to the presence of the third light L3. As shown in fig. 9, when the second touch electrode layer 500 is disposed between the pixel defining layer 200 and the driving substrate 100, and the thickness H1 of the second touch electrode is greater than or equal to the light emitting driving distance H2, the third light L3 is reflected by the second touch electrode 510, so as to reduce the internal reflectivity of the light, avoid the waste of the light emitted by the light emitting layer 820, and improve the utilization rate of the light, so as to improve the efficiency of the light emitted from the front surface of the display panel. It is understood that the light emitted from the organic light emitting structure 800 is directed in various directions, and fig. 8 and 9 only schematically show the propagation paths of 3 light rays.
In one possible embodiment, the thickness H1 of the second touch electrode may be, for example, 0.2-0.5 μm; the light emission driving distance H2 may have a range of 0.1-0.2 μm. It is easily understood that if the thickness H1 of the second touch electrode is less than 0.2 μm, although the second touch electrode can also function as a touch electrode, the thickness is thinner, so that the third light L3 shown in fig. 9 has less feasibility of reflection, and even the third light L3 cannot be reflected. If the thickness H1 of the second touch electrode is greater than 0.5 μm, the thickness H1 of the second touch electrode is too thick, the process conditions are harsh, and the material of the second touch electrode 510 is easily peeled off, thereby reducing the yield and reliability of the display panel. For example, when the thickness H1 of the second touch electrode is 0.3 μm, the angle of tape etched in the process is generally 45 °, and the range of the vertical distance between the surface of the light emitting layer 820 close to the driving substrate 100 and the driving substrate 100 may be 0.1 to 0.2 μm, at this time, the second touch electrode 510 may reflect the lateral light (e.g., the third light L3) emitted by the light emitting layer, so that the originally laterally transmitted light may be emitted from the display surface of the display panel, the vertical light emission is not affected, the utilization rate of the self-luminous light may be improved, and the power consumption may be reduced.
In a possible implementation manner, fig. 10 is a schematic diagram illustrating a positional relationship between a first touch electrode, a second touch electrode and a sub-pixel area in a display panel according to an embodiment of the present disclosure. As shown in fig. 10, for example, the first touch electrode 410 and the second touch electrode 510 intersect to define a touch sensing area T, and the touch sensing areas T may be arranged in an array; the orthographic projection of the touch sensing area T on the driving substrate 100 can cover the orthographic projection of the plurality of sub-pixel areas 210 on the driving substrate. The touch sensing area T shown in fig. 10 covers three sub-pixel areas 210, and may also cover more sub-pixel areas 210, which is not specifically limited in the present application. Each crossing position of the first touch electrode 410 and the second touch electrode 510 is the most sensitive position for touch sensing, and it is easily understood that the denser the crossing position of the first touch electrode 410 and the second touch electrode 510 is, the higher the touch sensitivity of the whole display panel is. It should be noted that the crossing positions of the first touch electrode 410 and the second touch electrode 510 are non-contact spatial overlapping, and a film layer with insulation is required to be spaced between the first touch electrode 410 and the second touch electrode 510 in a direction perpendicular to the driving substrate 100. The shape of the touch sensing area T in the display panel may be adaptively designed according to the arrangement of the sub-pixel areas 210, and the shape of the touch sensing area T and the number of the covered sub-pixel areas 210 may have different types and exist in the same display panel, which is not specifically limited in the present application.
According to the display panel provided by the embodiment of the application, the first touch electrode 410 and the second touch electrode 510 define the touch sensing area T in a crossed manner, the touch sensing area T can play a touch sensing role, the crossed position of the first touch electrode 410 and the second touch electrode 510 is the most sensitive position of the touch sensing, and the built-in and thinning display module of the touch function on the display panel is realized while the touch effect is ensured.
In a possible implementation manner, fig. 11 is a schematic view illustrating another positional relationship between a first touch electrode, a second touch electrode and a sub-pixel area in a display panel according to an embodiment of the present disclosure. As shown in fig. 11, the first touch electrode layer 400 may include a plurality of touch patterns 420, the touch patterns 420 are electrically connected to the first touch electrodes 410, and the orthographic projection of the touch patterns 420 on the driving substrate 100 covers the touch electrode projection intersections, where the touch electrode projection intersections are intersections of the orthographic projection of the first touch electrodes 410 on the driving substrate 100 and the orthographic projection of the second touch electrodes 510 on the driving substrate 100. The orthographic projection of the light-shielding pattern 610 on the driving substrate 100 covers the orthographic projection of the touch pattern 420 on the driving substrate.
In the display panel provided by the embodiment of the application, the touch pattern 420 is arranged on the first touch electrode layer 400, the touch pattern 420 and the first touch electrode 410 have the same function, and in addition, the touch pattern 420 can increase the touch sensing area, enhance the touch sensing effect, and improve the touch sensing sensitivity and precision. The area of the touch pattern 420 is not particularly limited, and may be as large as possible in a limited setting space, and the larger the area of the touch pattern 420 is, the higher the touch sensing sensitivity and accuracy are.
In a possible implementation manner, fig. 12 is a schematic diagram illustrating another positional relationship between the first touch electrode, the second touch electrode and the sub-pixel area in the display panel according to the embodiment of the present application. As shown in fig. 12, the second touch electrode layer 500 may include a plurality of touch patterns 520, the touch patterns 520 are electrically connected to the second touch electrodes 510, and the orthogonal projection of the touch patterns 520 on the driving substrate 100 covers the touch electrode projection intersection, where the touch electrode projection intersection is an intersection of the orthogonal projection of the first touch electrode 410 on the driving substrate 100 and the orthogonal projection of the second touch electrode 510 on the driving substrate 100. The orthographic projection of the light-shielding pattern 610 on the driving substrate 100 covers the orthographic projection of the touch pattern 520 on the driving substrate 100.
In the display panel provided in the embodiment of the present application, the touch pattern 520 may be disposed on the second touch electrode layer 500, and the touch pattern 520 and the second touch electrode 510 have the same function. The touch pattern 520 can increase the touch sensing area, enhance the touch sensing effect, and improve the touch sensing sensitivity and precision. The area of the touch pattern 520 is not particularly limited, and may be as large as possible in a limited installation space, and the larger the area of the touch pattern 520 is, the higher the touch sensing sensitivity and accuracy are.
It is easily understood that the organic light emitting structures disposed in the sub-pixel region 210 shown in fig. 12 may be a first organic light emitting structure R, a second organic light emitting structure G, and a third organic light emitting structure B, and an RGB color mixing scheme is adopted, each repeatedly arranged unit may include one first organic light emitting structure R, one third organic light emitting structure B, and two second organic light emitting structures G, and the areas of the first organic light emitting structure R, the second organic light emitting structure G, and the third organic light emitting structure B may be different from each other, and may be adjusted according to actual needs and the color mixing scheme, and the application is not limited specifically.
In a possible implementation manner, the first touch electrode layer 400 and the second touch electrode layer 500 may be simultaneously provided with touch patterns, so as to further increase the touch sensing area, enhance the touch sensing effect, and improve the touch sensing sensitivity and precision.
In one possible embodiment, the shape of the touch graphic 520 may be one or more of a polygon, an ellipse, and a circle. The shapes and positions of the touch pattern 420 and the touch pattern 520 shown in fig. 11 and 12 are merely schematic and are not intended to specifically limit the present application. The arrangement of the sub-pixel regions 210 shown in fig. 11 and 12 is also only schematic, and may be a tree-shaped or honeycomb-shaped arrangement, and the present application is not limited in particular.
In a second aspect, fig. 13 is a schematic structural diagram of a display panel module according to an embodiment of the present disclosure. As shown in fig. 13, an embodiment of the present application provides a display module, which may include: the display panel 1000, the cover plate 2000 and the flexible circuit board 3000, the display panel 1000 and the cover plate 2000 are oppositely disposed, the cover plate 2000 can protect the display panel 1000, and the display panel 1000 can adopt any one of the display panels in the above embodiments. The flexible wiring board 3000 is usually designed with FPC or COF, which can be usually bound at a binding region on the display panel 1000. COF designs are typically implemented by binding the IC to the FPC; in the design of the FPC, the IC is usually bound to a binding region of the display panel 1000, and the flexible circuit board 3000 may be bent to the back of the display panel 1000 according to the setting of the display device, which is not specifically limited in the present application.
While preferred embodiments of the present specification have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all changes and modifications that fall within the scope of the specification.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present specification without departing from the spirit and scope of the specification. Thus, if such modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalents, the specification is intended to include such modifications and variations.
Claims (10)
1. A display panel provided with a driving substrate, comprising: the device comprises a pixel defining layer, a packaging layer, a first touch electrode layer, a second touch electrode layer and a shading layer;
the pixel defining layer, the packaging layer, the first touch electrode layer and the light shielding layer are sequentially arranged on the driving side of the driving substrate;
the second touch electrode layer is arranged between the packaging layer and the driving substrate;
the first touch electrode layer comprises a plurality of first touch electrodes;
the second touch electrode layer comprises a plurality of second touch electrodes;
the light shielding layer comprises a light shielding pattern, and the orthographic projection of the light shielding pattern on the driving substrate covers a target projection, wherein the target projection comprises the orthographic projection of the first touch electrode on the driving substrate and the orthographic projection of the second touch electrode on the driving substrate.
2. The display panel of claim 1, wherein the pixel defining layer defines a plurality of sub-pixel regions, and the sub-pixel regions have organic light emitting structures disposed therein;
the light shielding layer comprises a plurality of opening areas, and the opening areas are used for enabling light rays emitted by the organic light emitting structures to penetrate out;
the opening region is provided with a filter film, and the orthographic projection of the filter film on the driving substrate covers the orthographic projection of the corresponding sub-pixel region on the driving substrate.
3. The display panel of claim 1, wherein the second touch electrode layer is disposed between the pixel defining layer and the encapsulation layer.
4. The display panel according to claim 2, wherein the second touch electrode layer is disposed between the driving substrate and the pixel defining layer.
5. The display panel according to claim 4, wherein the organic light emitting structure comprises a first electrode, a light emitting layer, and a second electrode, the light emitting layer being disposed between the first electrode and the second electrode;
the first electrode is used for being electrically connected with a driving device of the driving substrate;
the thickness of the second touch electrode in the direction perpendicular to the driving substrate is the thickness of the second touch electrode, the vertical distance between the surface of the light-emitting layer close to the driving substrate and the driving substrate is the light-emitting driving distance, and the thickness of the second touch electrode is larger than or equal to the light-emitting driving distance.
6. The display panel according to claim 5, wherein the thickness of the second touch electrode ranges from 0.2 μm to 0.5 μm;
the value range of the light-emitting driving distance is 0.1-0.2 μm.
7. The display panel according to claim 2, wherein the first touch electrode and the second touch electrode intersect to define a touch sensing area, and the touch sensing areas are arranged in an array;
the orthographic projection of the touch sensing area on the driving substrate covers the orthographic projection of the sub-pixel areas on the driving substrate.
8. The display panel according to claim 7, wherein the first touch electrode layer comprises a plurality of touch patterns, the touch patterns are electrically connected to the first touch electrodes, and an orthographic projection of the touch patterns on the driving substrate covers touch electrode projection intersections, wherein the touch electrode projection intersections are intersections where the orthographic projection of the first touch electrodes on the driving substrate and the orthographic projection of the second touch electrodes on the driving substrate;
and the orthographic projection of the shading graph on the driving substrate covers the orthographic projection of the touch graph on the driving substrate.
9. The display panel according to claim 7, wherein the second touch electrode layer comprises a plurality of touch patterns, the touch patterns are electrically connected with the second touch electrodes, and an orthographic projection of the touch patterns on the driving substrate covers a touch electrode projection intersection, wherein the touch electrode projection intersection is an intersection of an orthographic projection of the first touch electrode on the driving substrate and an orthographic projection of the second touch electrode on the driving substrate;
and the orthographic projection of the shading graph on the driving substrate covers the orthographic projection of the touch graph on the driving substrate.
10. A display module comprising the display panel according to any one of claims 1 to 9.
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| CN112993185B (en) | 2023-05-12 |
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