CN108985248B - Display panel - Google Patents
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- CN108985248B CN108985248B CN201810832448.8A CN201810832448A CN108985248B CN 108985248 B CN108985248 B CN 108985248B CN 201810832448 A CN201810832448 A CN 201810832448A CN 108985248 B CN108985248 B CN 108985248B
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- display panel
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- supporting
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
Abstract
The embodiment of the invention discloses a display panel, which comprises: the display device comprises an array substrate and an opposite substrate which are oppositely arranged, wherein the array substrate comprises a plurality of display units; a support structure between the array substrate and the counter substrate, the support structure comprising a plurality of support units; the fingerprint identification structure is positioned on one side of the display unit, which is far away from the opposite substrate; the display panel comprises a first display area and a second display area adjacent to the first display area, wherein the orthographic projection of the fingerprint identification structure on the display surface of the display panel is positioned in the first display area of the display panel, and the area proportion occupied by the supporting units in the first display area is smaller than that occupied by the supporting units in the second display area, so that the fingerprint identification precision of the display panel is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel.
Background
With the development of fingerprint identification technology, more and more display panels integrate a fingerprint identification function. In the display panel that current integration has the fingerprint identification function, its fingerprint identification module sets up the below of pixel cell in display panel usually, through receiving the reflection light of display panel display surface carries out fingerprint identification. However, the existing display panel integrated with the fingerprint recognition function has low fingerprint recognition accuracy.
Disclosure of Invention
In order to solve the above technical problem, an embodiment of the present invention provides a display panel, so as to improve fingerprint identification accuracy of the display panel.
In order to solve the above problems, the embodiments of the present invention provide the following technical solutions:
a display panel, comprising:
the display device comprises an array substrate and an opposite substrate which are oppositely arranged, wherein the array substrate comprises a plurality of display units;
a support structure between the array substrate and the counter substrate, the support structure comprising a plurality of support units;
the fingerprint identification structure is positioned on one side of the display unit, which is far away from the opposite substrate;
the display panel comprises a first display area and a second display area adjacent to the first display area, wherein the orthographic projection of the fingerprint identification structure on the display surface of the display panel is positioned in the first display area of the display panel, and the area proportion occupied by the supporting units in the first display area is smaller than the area proportion occupied by the supporting units in the second display area.
Compared with the prior art, the technical scheme has the following advantages:
in the technical solution provided in the embodiment of the present invention, an area ratio occupied by the supporting unit in the first display area corresponding to the fingerprint identification structure is smaller than an area ratio occupied by the supporting unit in the second display area, so that an amount of light scattered or reflected by the supporting unit of a reflected light reflected by a display surface of the display panel to the fingerprint identification structure is reduced by reducing the area ratio occupied by the supporting unit in the first display area, a transmittance of the reflected light is improved, and signal loss and crosstalk are reduced, thereby improving an amount of light of the reflected light received by the fingerprint identification structure, improving a definition of a valley and ridge signal received by the fingerprint identification structure, and further improving a fingerprint identification precision of the display panel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a top view of the first display area and the second display area in the display panel according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
FIG. 4 is a top view of a second area of the second display area of the display panel according to an embodiment of the present invention;
FIG. 5 is a top view of a first region of the first display area of the display panel according to an embodiment of the present invention;
FIG. 6 is a top view of a first area of the first display region of the display panel according to another embodiment of the present invention;
fig. 7 is a schematic diagram illustrating relative positions of a second display area, a first identification area and a second identification area in a display panel according to an embodiment of the invention;
fig. 8 is a top view of a first identification area and a second identification area in the first display area in the display panel according to an embodiment of the invention;
fig. 9 is a top view of a first identification area and a second identification area in the first display area in the display panel according to another embodiment of the invention;
fig. 10 is a schematic diagram illustrating relative positions of the fingerprint identification unit and the supporting unit in the display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As described in the background section, the existing display panel integrated with the fingerprint recognition function has low fingerprint recognition accuracy.
Taking an OLED display panel as an example, in an existing display panel integrated with a fingerprint identification function, a fingerprint identification module is located below a display module, when the display panel works specifically, light emitted by an OLED light-emitting unit is emitted to a display surface of the display panel, and part of the light is reflected by the display surface of the display panel to form reflected light, when the reflected light passes through the display module in the display panel, the reflected light is affected by a support pillar in the display module, and part of the reflected light is reflected and/or scattered by the surface of the support pillar, so that the penetration rate of the reflected light is reduced, and the amount of light received by the fingerprint identification module through the display module in the reflected light is small, thereby the fingerprint identification precision of the display panel is low.
Moreover, the support columns in the display module may cause a haze difference, and the greater the haze, the more serious the support columns scatter the reflected light, and the more serious the loss and crosstalk of the reflected light, so that the more serious the light loss carrying the fingerprint identification signal is, the lower the fingerprint identification accuracy of the display panel is. Where haze (haze) is the percentage of the total transmitted intensity of the transmitted light that deviates from the incident by more than 2.5 degrees, greater haze means reduced film gloss and clarity, particularly in image formation.
It should be noted that, when the brightness is normalized to the same brightness, the valley and ridge signals received by the fingerprint identification module under the low haze are better than the valley and ridge signals received by the fingerprint identification module under the high haze, and the more obvious the valley and ridge signals received by the fingerprint identification module are, the higher the precision of the fingerprint identification module when performing fingerprint identification based on the valley and ridge signals is.
In addition, since the light emitted by the light emitting unit of the display panel may partially emit to the bottom surface of the display panel (the bottom surface is opposite to the display surface) in addition to the display surface of the display panel, as the background light of the fingerprint identification structure, when the light reflected by the display surface of the display panel is scattered or blocked by the supporting pillars, which causes the amount of the reflected light received by the fingerprint identification structure to decrease, the resolution of the fingerprint identification structure to the reflected light and the background light may be low, which affects the detection accuracy.
In view of the above, an embodiment of the present invention provides a display panel, as shown in fig. 1, including:
the display panel comprises an array substrate 10 and an opposite substrate 20 which are oppositely arranged, wherein the array substrate 10 comprises a plurality of display units;
a support structure 30 between the array substrate 10 and the opposite substrate 20, the support structure including a plurality of support units;
a fingerprint identification structure 40 on a side of the display unit facing away from the counter substrate 20;
as shown in fig. 2, the display panel includes a first display area 100 and a second display area 200 adjacent to the first display area 100, wherein an orthogonal projection of the fingerprint identification structure 40 on the display surface of the display panel is located in the first display area 100 of the display panel, and an area ratio occupied by the supporting units 31 in the first display area 100 is smaller than an area ratio occupied by the supporting units 31 in the second display area 200.
Specifically, on the basis of the above embodiment, in an embodiment of the present invention, the array substrate includes a plurality of display units 11, and each display unit 11 includes sub-pixels with multiple colors for forming a color picture, but the present invention is not limited thereto, and in other embodiments of the present invention, when the display panel is used for forming a black-and-white picture, the corresponding colors of the sub-pixels in each display unit 11 may also be the same, as the case may be. Optionally, when the display unit 11 includes sub-pixels of multiple colors, the display unit 11 includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel, but the present invention is not limited thereto, and in other embodiments of the present invention, the display unit 11 may further include a white sub-pixel, as the case may be.
On the basis of the foregoing embodiments, in an embodiment of the present invention, the fingerprint identification structure is integrated in the array substrate and located on a side of the display unit away from the opposite substrate to improve the integration level of the display panel, but the present invention is not limited thereto.
For convenience of illustration, the display panel provided in the embodiments of the present invention is described below with the fingerprint identification structure being located on a side of the array substrate away from the opposite substrate, and the display panel is an OLED display panel as an example, but the embodiments of the present invention are also applicable to the fingerprint identification structure being integrated in the array substrate and/or the display panel being an LCD display panel.
As shown in fig. 3, on the basis of the above embodiment, in an embodiment of the present invention, the display panel further includes: the array substrate comprises a fingerprint identification structure 40, an array substrate 10 and a collimation system 50, wherein the collimation system 50 is arranged between the fingerprint identification structure 40 and the array substrate 10, and frame sealing glue 60 is further arranged around the collimation system 50, so that light rays entering the collimation system 50 are fixed in a space surrounded by the frame sealing glue 60, and are prevented from leaking to the outside. Optionally, the collimating system 50 is a Fiber Optic Plate (FOP), but the invention is not limited thereto, and in other embodiments of the invention, the collimating system 50 may also have other structures, as the case may be.
Continuing with fig. 3, on the basis of the above embodiment, in an embodiment of the present invention, the alignment system 50 is fixedly connected to the array substrate 10 through a first optical adhesive 70, and is fixedly connected to the fingerprint identification structure 40 through a second optical adhesive 80, but the present invention is not limited thereto, and in other embodiments of the present invention, the alignment system 50 may also be fixedly connected to the array substrate and the fingerprint identification structure through other manners, as the case may be.
Further, the display panel further includes: and the control circuit 90 is electrically connected with the fingerprint identification structure 40, and the control circuit 90 is used for controlling the fingerprint identification structure 40 to perform fingerprint identification based on the light signals received by the fingerprint identification structure.
Specifically, on the basis of any of the above embodiments, in an embodiment of the present invention, the fingerprint identification structure 40 includes a plurality of fingerprint identification units 41, and in operation, if the display surface is touched by a finger, light emitted by the OLED light emitting units in the array substrate is emitted to the display surface of the display panel, and is reflected by the finger located at the display surface to form reflected light, and the reflected light sequentially passes through the opposite substrate 20, the supporting structure 30 and the array substrate 10, enters the collimating system 50, is filtered by the collimating system 50 to remove light in an oblique direction, and is received by the fingerprint identification units 41, and the fingerprint identification units 41 perform fingerprint identification based on light signals received by the fingerprint identification units 41 under the control of the control circuit 90. It should be noted that, because the fingerprint lines of the finger are concave-convex patterns, and the reflected light formed in the concave-convex area is different, the fingerprint identification unit 41 can obtain the fingerprint of the touch finger according to the reflected light received by the fingerprint identification unit, so as to realize fingerprint identification.
Optionally, on the basis of the above embodiment, in an embodiment of the present invention, the fingerprint identification unit 41 is a light sensing unit, but the present invention is not limited thereto, as the case may be.
In the embodiment of the present invention, the opposite substrate 20 may be a glass substrate, an encapsulation film, or another structure, and the present invention is not limited thereto, as the case may be.
In the display panel provided in the embodiment of the present invention, the area ratio occupied by the supporting unit in the first display region corresponding to the fingerprint identification structure is smaller than the area ratio occupied by the supporting unit in the second display region, so that the amount of light scattered or reflected by the supporting unit of the reflected light reflected by the display surface of the display panel to the fingerprint identification structure is reduced by reducing the area ratio occupied by the supporting unit in the first display region, the penetration rate of the reflected light is improved, the amount of light of the reflected light received by the fingerprint identification structure is improved, and the fingerprint identification precision of the display panel is improved.
In the display panel provided by the embodiment of the present invention, the area ratio occupied by the supporting unit in the first display region corresponding to the fingerprint identification structure is smaller than the area ratio occupied by the supporting unit in the second display region, and the scattering of the haze caused by the supporting unit to the reflected light may also be reduced, so as to reduce signal loss and crosstalk, improve the definition of the valley and ridge signals received by the fingerprint identification structure, and further improve the detection accuracy of the fingerprint identification of the display panel.
Specifically, in an embodiment of the present invention, an area ratio occupied by the supporting units in the first display area is a first ratio, and an area ratio occupied by the supporting units in the second display area is a second ratio, where the first ratio is smaller than the second ratio.
On the basis of the above embodiment, in an embodiment of the present invention, an orthographic projection of the fingerprint identification structure on the display surface of the display panel coincides with the first display area to reduce an area occupied by the first proportion in the display area of the display panel, so that on the basis of improving the fingerprint identification accuracy of the display panel, an influence on the supporting strength of the supporting structure due to the reduction of the area proportion occupied by the supporting units in the partial area of the display panel is reduced to the greatest extent. However, the present invention is not limited to this, and in other embodiments of the present invention, an area of an orthographic projection of the fingerprint identification structure on the display surface of the display panel may also be smaller than an area of the first display area, as long as it is ensured that the orthographic projection of the fingerprint identification structure on the display surface of the display panel is located in the first display area.
Specifically, on the basis of any of the above embodiments, in an embodiment of the present invention, the density of the supporting units in the first display area is smaller than the density of the supporting units in the second display area, that is, the average number of the supporting units in a unit area in the first display area is smaller than the average number of the supporting units in a unit area in the second display area, so that the area ratio occupied by the supporting units in the first display area is smaller than the area ratio occupied by the supporting units in the second display area by setting the density of the supporting units in the first display area to be smaller than the density of the supporting units in the second display area.
It should be noted that, in the above embodiment, the size of the supporting unit in the first display area may be the same as or different from the size of the supporting unit in the second display area, and the present invention is not limited to this, as the case may be. Wherein the size of the supporting unit comprises an orthographic projection area of the supporting unit on the display surface of the display panel.
In another embodiment of the present invention, an orthographic projection area of the supporting unit on the display surface of the display panel in the first display area is smaller than an orthographic projection area of the supporting unit on the display surface of the display panel in the second display area, so that by setting the orthographic projection area of the supporting unit on the display surface of the display panel in the first display area to be smaller than the orthographic projection area of the supporting unit on the display surface of the display panel in the second display area, an area ratio occupied by the supporting unit in the first display area is smaller than an area ratio occupied by the supporting unit in the second display area.
It should be noted that, in the above embodiment, the density of the supporting units in the first display area may be the same as or different from the density of the supporting units in the second display area, which is not limited in the present invention, as the case may be.
In another embodiment of the present invention, the density of the supporting units in the first display area is smaller than the density of the supporting units in the second display area, and the orthographic projection area of the supporting units on the display surface of the display panel in the first display area is smaller than the orthographic projection area of the supporting units on the display surface of the display panel in the second display area, so that the area ratio occupied by the supporting units in the first display area is smaller than the area ratio occupied by the supporting units in the second display area by simultaneously reducing the density of the supporting units in the first display area and the orthographic projection area of the supporting units on the display surface of the display panel.
In addition to any of the above embodiments, in an embodiment of the present invention, the first display area is divided into a plurality of first areas, the first areas cover a plurality of support units, the number of the support units in each of the first areas in the first display area is the same, and the arrangement manner of the plurality of support units in each of the first areas is the same.
Similarly, in an embodiment of the present invention, the second display area is divided into a plurality of second areas, the second areas cover a plurality of supporting units, the number of the supporting units in each of the second areas in the second display area is the same, and the arrangement manner of the supporting units in each of the second areas is the same.
On the basis of the above embodiment, in an embodiment of the present invention, the number of the display units covered by the second region is the same as the number of the display units covered by the first region, that is, the areas of the second region and the first region are the same, specifically, in an embodiment of the present invention, as shown in fig. 4, 69 support units are covered in the second region, and as shown in fig. 5, 41 support units are covered in the first region, but the present invention is not limited thereto, as the case may be.
Optionally, on the basis of the foregoing embodiment, in an embodiment of the present invention, the first area covers N rows of supporting units, and any one of the supporting units in the ith row of supporting units in the N rows of supporting units and two supporting units closest to the ith row of supporting units in the (i + 1) th row of supporting units form an isosceles triangle, so that the supporting strength of the supporting units in the first display area on the display panel is improved by using the stability principle of the isosceles triangle, and the supporting uniformity of the supporting structure on each area of the display panel is improved; any one of the supporting units in the ith row of supporting units and two supporting units which are closest to the supporting unit in the ith-1 row of supporting units form an isosceles triangle, so that the supporting strength of the supporting units in the first display area on the display panel is improved by utilizing the stability principle of the isosceles triangle, and the supporting uniformity of the supporting structure on each area of the display panel is improved. Wherein i is any integer from 1 to N in sequence, and 1 and N are not included.
In another embodiment of the present invention, as shown in fig. 6, in the first area, the plurality of supporting units 31 are partially arranged along a first direction X and partially arranged along a second direction Y, and the first direction X and the second direction Y intersect each other and are all diagonal directions of the first area; the distance between adjacent supporting units in the supporting units arranged in the first direction X is gradually increased along the direction deviating from the center of the first area, the distance between adjacent supporting units in the supporting units arranged in the second direction Y is gradually decreased along the direction deviating from the center of the first area, so that after the first display area is spliced by the plurality of first areas, the central area or four corner areas of any first area are supported by dense supporting units and sparse supporting units, the supporting strength of the central area or four corner areas of the first area is balanced, and the supporting uniformity of the supporting structure for each area of the display panel is improved.
In the above embodiments, the specific directions of the first direction X and the second direction Y are not limited in the present invention, and may be interchanged as long as the first direction X and the second direction Y are both diagonal directions of the first region. Preferably, the first region is a square region, and the first direction X is perpendicular to the second direction Y. Of course, in other embodiments of the present invention, the first region may not be a square region, as the case may be.
In another embodiment of the present invention, as shown in fig. 7, the first display area 100 includes a first identification area 101 and the second identification area 102, and the probability of touching the first identification area 101 is greater than the probability of touching the second identification area 102. Optionally, the first identification area 101 is a main identification area, and the second identification area 102 is an auxiliary identification area, for example, in an embodiment of the present invention, when performing fingerprint identification, a probability that a central area of a fingerprint is touched is greater than a probability that an edge area of the fingerprint is touched, in the embodiment of the present invention, the first identification area 101 corresponds to the central area of the fingerprint, and the second identification area 102 corresponds to the edge area of the fingerprint, but the present invention is not limited thereto, and is specifically determined according to the circumstances.
It should be noted that, although fig. 7 illustrates the first identification area 101 being located in the central area of the second identification area 102 and/or the first display area, and the second identification area 102 being wrapped around the first identification area 101, the present invention is not limited to this, and in other embodiments of the present invention, the first identification area 101 and the second identification area 102 may also be arranged in parallel, or semi-wrapped, or arranged in other manners, as the case may be, as long as it is ensured that the probability of the first identification area 101 being touched is greater than the probability of the second identification area 102 being touched.
On the basis of the above embodiment, in an embodiment of the present invention, as shown in fig. 8, the area ratio occupied by the supporting unit 31 in the first identification area 101 is smaller than the area ratio occupied by the supporting unit 31 in the second identification area 102, so as to further reduce the area ratio occupied by the supporting unit 31 in the first identification area 101, thereby reducing the amount of light scattered or reflected by the supporting unit of the reflected light reflected by the display surface of the display panel to the fingerprint identification structure, improving the transmittance of the reflected light, further improving the amount of light of the reflected light received by the fingerprint identification structure, and improving the fingerprint identification accuracy of the display panel.
Moreover, the area proportion occupied by the supporting units in the first identification area 101 corresponding to the fingerprint identification structure is smaller than the area proportion occupied by the supporting units in the second identification area 102, so that the scattering of haze caused by the supporting units to the reflected light can be reduced, the signal loss and crosstalk phenomena are reduced, the definition of valley and ridge signals received by the fingerprint identification structure is improved, and the detection precision of the fingerprint identification of the display panel is improved.
Specifically, on the basis of the above embodiment, in an embodiment of the present invention, the density of the supporting units in the first identification area is smaller than the density of the supporting units in the second identification area, that is, the average number of the supporting units in the unit area in the first identification area is smaller than the average number of the supporting units in the unit area in the second identification area, so that the area ratio occupied by the supporting units in the first identification area is smaller than the area ratio occupied by the supporting units in the second identification area by setting the density of the supporting units in the first identification area to be smaller than the density of the supporting units in the second identification area.
It should be noted that, in the above embodiment, the size of the supporting unit in the first identification area may be the same as or different from the size of the supporting unit in the second identification area, and the present invention is not limited to this, as the case may be. Wherein the size of the supporting unit comprises an orthographic projection area of the supporting unit on the display surface of the display panel.
In another embodiment of the present invention, an orthographic projection area of the supporting unit on the display surface of the display panel in the first identification area is smaller than an orthographic projection area of the supporting unit on the display surface of the display panel in the second identification area, so that by setting the orthographic projection area of the supporting unit on the display surface of the display panel in the first identification area to be smaller than the orthographic projection area of the supporting unit on the display surface of the display panel in the second identification area, an area ratio occupied by the supporting unit in the first identification area is smaller than an area ratio occupied by the supporting unit in the second identification area.
It should be noted that, in the above embodiment, the density of the supporting units in the first identification area may be the same as or different from the density of the supporting units in the second identification area, which is not limited in the present invention, as the case may be.
In another embodiment of the present invention, the density of the supporting units in the first identification area is smaller than the density of the supporting units in the second identification area, and the orthographic projection area of the supporting units on the display surface of the display panel in the first identification area is smaller than the orthographic projection area of the supporting units on the display surface of the display panel in the second identification area, so that the area ratio occupied by the supporting units in the first identification area is smaller than the area ratio occupied by the supporting units in the second identification area by simultaneously reducing the density of the supporting units in the first identification area and the orthographic projection area of the supporting units on the display surface of the display panel.
On the basis of any of the above embodiments, in an optional embodiment of the present invention, as shown in fig. 9, the first identification area 101 is not covered with the supporting unit 31, so as to reduce, to the maximum extent, the amount of light scattered or reflected by the supporting unit of the reflected light reflected by the display surface of the display panel in the first identification area 101 toward the fingerprint identification structure, and improve the transmittance of the reflected light, thereby improving the amount of light of the reflected light received by the fingerprint identification structure in the first identification area 101, reducing signal loss and crosstalk phenomena, improving the definition of a valley and ridge signal received by the fingerprint identification structure, and improving the fingerprint identification accuracy of the display panel.
On the basis of any of the above embodiments, in an embodiment of the present invention, as shown in fig. 10, the fingerprint identification structure includes a plurality of fingerprint identification units 41, and an orthographic projection of the fingerprint identification unit 41 on the display surface of the display panel is not overlapped with an orthographic projection of the supporting unit 31 on the display surface of the display panel, so that the fingerprint identification unit 41 is located in a gap of the supporting unit 31, so as to reduce an amount of light reflected by the display surface of the display panel to the fingerprint identification unit 41 and blocked by the supporting unit 31, ensure that more signals in the light reflected by the display surface of the display panel penetrate through the supporting structure, improve an amount of light of the reflected light received by the fingerprint identification unit 41, and improve fingerprint identification accuracy of the display panel.
On the basis of any of the above embodiments, in an embodiment of the present invention, a ratio of an area occupied by the supporting units in the second display area is greater than a ratio of an area occupied by the supporting units in the first display area, so that the supporting units in the second display area are utilized to improve an overall supporting strength of the supporting structure.
Optionally, on the basis of the foregoing embodiment, in an embodiment of the present invention, the second display area covers M sub-pixels, and correspondingly, the second display area covers M support units, so as to improve the overall support strength of the support units of the second display area to the greatest extent, so as to improve the support strength of the support structure in the entire display panel, but the present invention is not limited thereto. Optionally, an orthographic projection of the supporting unit on the display surface of the display panel is located in a gap of the orthographic projection of the sub-pixel on the display surface of the display panel, so as to avoid the supporting unit from affecting the aperture ratio of the sub-pixel.
It should be noted that, on the basis of any of the above embodiments, in an embodiment of the present invention, the display panel may increase the orthographic projection area of the supporting unit on the display surface of the display panel to improve the supporting strength of the supporting structure on the premise of not affecting the aperture ratio of the second display area, or may further increase the orthographic projection area of the supporting unit on the display surface of the display panel to improve the supporting strength of the supporting structure by reducing the aperture ratio of the second display area, but the present invention is not limited thereto, and is determined as the case may be.
It should be noted that, in any of the above embodiments, the present invention does not specifically limit the installation position, size, and/or number of the supporting units, so that on the basis of improving the fingerprint identification accuracy of the display panel, the supporting force provided by the supporting structure to the display panel is optimal, as the case may be.
In summary, in the display panel provided in the embodiment of the present invention, the area ratio occupied by the supporting unit in the first display area corresponding to the fingerprint identification structure is smaller than the area ratio occupied by the supporting unit in the second display area, so that the light quantity of the reflected light reflected by the display surface of the display panel to the fingerprint identification structure and scattered or reflected by the supporting unit is reduced by reducing the area ratio occupied by the supporting unit in the first display area, the transmittance of the reflected light is improved, the signal loss and the crosstalk phenomenon are reduced, the light quantity of the reflected light received by the fingerprint identification structure is improved, the definition of the valley and ridge signals received by the fingerprint identification structure is improved, and the fingerprint identification precision of the display panel is improved.
In the description, each part is described in a progressive manner, each part is emphasized to be different from other parts, and the same and similar parts among the parts are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A display panel, comprising:
the display device comprises an array substrate and an opposite substrate which are oppositely arranged, wherein the array substrate comprises a plurality of display units;
a support structure between the array substrate and the counter substrate, the support structure comprising a plurality of support units;
the fingerprint identification structure is positioned on one side of the display unit, which is far away from the opposite substrate;
the display panel comprises a first display area and a second display area adjacent to the first display area, wherein the orthographic projection of the fingerprint identification structure on the display surface of the display panel is positioned in the first display area of the display panel, and the area proportion occupied by the supporting units in the first display area is smaller than the area proportion occupied by the supporting units in the second display area.
2. The display panel according to claim 1, wherein an orthographic projection of the fingerprint identification structure on the display surface of the display panel coincides with the first display area.
3. The display panel according to claim 1, wherein a density of the supporting units in the first display region is less than a density of the supporting units in the second display region.
4. The display panel according to claim 1, wherein an orthographic projection area of the supporting unit on the display surface of the display panel in the first display area is smaller than an orthographic projection area of the supporting unit on the display surface of the display panel in the second display area.
5. The display panel according to any one of claims 1 to 4, wherein the first display area is divided into a plurality of first regions, the first regions cover a plurality of support units, the number of the support units in each of the first regions in the first display area is the same, and the arrangement of the plurality of support units in each of the first regions is the same.
6. The display panel according to claim 5, wherein the first region covers N rows of supporting units, and any supporting unit in an ith row of supporting units in the N rows of supporting units and two nearest supporting units in an (i + 1) th row of supporting units form an isosceles triangle; any supporting unit in the ith row of supporting units and two supporting units which are closest to the supporting unit in the ith-1 row of supporting units form an isosceles triangle, wherein i is any integer from 1 to N in sequence, and 1 and N are not included.
7. The display panel according to claim 5, wherein the plurality of supporting units are arranged partially in a first direction and partially in a second direction in the first region, and the first direction and the second direction intersect each other and are diagonal to the first region;
the distance between adjacent support units in the plurality of support units arranged along the first direction gradually increases along the direction departing from the center of the first area, and the distance between adjacent support units in the plurality of support units arranged along the second direction gradually decreases along the direction departing from the center of the first area.
8. The display panel according to any one of claims 1 to 4, wherein the first display area includes a first identification area and a second identification area, a probability of touch occurrence in the first identification area is greater than a probability of touch occurrence in the second identification area, and a ratio of an area occupied by the supporting unit in the first identification area is smaller than a ratio of an area occupied by the supporting unit in the second identification area.
9. The display panel according to claim 8, wherein the first recognition area is not covered with the supporting unit.
10. The display panel according to claim 1, wherein the fingerprint identification structure comprises a plurality of fingerprint identification units, and an orthographic projection of the fingerprint identification units on the display surface of the display panel is not overlapped with an orthographic projection of the supporting units on the display surface of the display panel.
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| CN201810832448.8A CN108985248B (en) | 2018-07-26 | 2018-07-26 | Display panel |
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| CN201810832448.8A CN108985248B (en) | 2018-07-26 | 2018-07-26 | Display panel |
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| CN109728048B (en) * | 2018-12-29 | 2021-03-02 | 武汉天马微电子有限公司 | Display panel and display device |
| CN110501839A (en) | 2019-07-30 | 2019-11-26 | 武汉华星光电技术有限公司 | Display panel and display device |
| CN111129103A (en) * | 2020-01-02 | 2020-05-08 | 昆山国显光电有限公司 | Display panel and display device |
| CN111261033A (en) * | 2020-03-24 | 2020-06-09 | 昆山国显光电有限公司 | Display panel and display device |
| CN111968522B (en) * | 2020-09-16 | 2022-07-01 | 厦门天马微电子有限公司 | Stretchable display panel and display device |
| CN114688998B (en) * | 2020-12-31 | 2023-10-27 | 深圳中科飞测科技股份有限公司 | Method and device for adjusting flatness of slide holder |
| CN112908199A (en) * | 2021-04-13 | 2021-06-04 | 昆山国显光电有限公司 | Display panel and display device |
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