CN109545825A - A kind of top light emitting display panel - Google Patents
A kind of top light emitting display panel Download PDFInfo
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- CN109545825A CN109545825A CN201811369176.9A CN201811369176A CN109545825A CN 109545825 A CN109545825 A CN 109545825A CN 201811369176 A CN201811369176 A CN 201811369176A CN 109545825 A CN109545825 A CN 109545825A
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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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
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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
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
Abstract
The embodiment of the present invention provides a kind of top light emitting display panel, is related to field of display technology, and the accuracy of lines identification can be improved.A kind of top light emitting display panel, including TFT backplate, metal light shield layer, reflection anode layer, light emitting functional layer, cathode layer and the chromatic filter layer being set in turn in the TFT backplate；The chromatic filter layer includes the first color filter portion, the second color filter portion and third color filter portion；First color, the second color and third color three primary colours each other；The metal light shield layer and the reflection anode layer are at least provided with fingerprint identification region, and the metal light shield layer and the reflection anode layer have several imaging holes in the fingerprint identification region；The orthographic projection lap at least partly described imaging hole in the TFT backplate in the first color filter portion with a thickness of first thickness, thickness of the first thickness less than the other parts in the first color filter portion.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of top light emitting display panels.
Background technique
Organic electroluminescent LED (Organic Electro luminescent Display, abbreviation OLED) relies on
Its low-power consumption, wide viewing angle, thin thickness, is able to achieve the excellent properties such as flexibility at high color saturation, is increasingly becoming the master of display field
Stream, can be widely applied to the end products such as smart phone, tablet computer, TV.
Fingerprint identification function is integrated in OLED display panel by the prior art, and how to improve the finger of OLED display panel
The accuracy of line identification, is those skilled in the art's urgent problem to be solved.
Summary of the invention
The embodiment of the present invention provides a kind of top light emitting display panel, and the accuracy of lines identification can be improved.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
On the one hand, a kind of top light emitting display panel is provided, which is characterized in that including TFT backplate, be set in turn in described
Metal light shield layer, reflection anode layer, light emitting functional layer, cathode layer and chromatic filter layer in TFT backplate；The colorized optical filtering
Layer includes the first color filter portion, the second color filter portion and third color filter portion；First color, the second color and third face
Color three primary colours each other；The metal light shield layer and the reflection anode layer are at least provided with fingerprint identification region, and the metal
Light shield layer and the reflection anode layer have several imaging holes in the fingerprint identification region；First color filter portion at least
Orthographic projection lap of the part imaging hole in the TFT backplate with a thickness of first thickness, the first thickness is small
In the thickness of the other parts in the first color filter portion.
Optionally, the positive throwing at least partly described imaging hole in the TFT backplate in second color filter portion
Shadow lap with a thickness of second thickness, the second thickness is less than the thickness of the other parts in second color filter portion
Degree.
Optionally, the positive throwing at least partly described imaging hole in the TFT backplate in third color filter portion
Shadow lap with a thickness of third thickness, the third thickness is less than the thickness of the other parts in third color filter portion.
Optionally, first color filter portion, the second color filter portion, third color filter portion are in the TFT backplate
On orthographic projection and the thickness of orthographic projection lap of all imaging holes in the TFT backplate be respectively described first
Thickness, the second thickness, the third thickness.
Optionally, the shape in first color filter portion with a thickness of the part of the first thickness and the imaging hole
Shape it is identical and there is the same center, the orthographic projection in the TFT backplate in first color filter portion with it is described
With a thickness of the ruler of the part of the first thickness in the size of the completely overlapped part of imaging hole, with first color filter portion
Very little difference is 2~6 μm；And/or shape and institute in second color filter portion with a thickness of the part of the second thickness
The shape for stating imaging hole is identical, and orthographic projection in the TFT backplate and the imaging hole in second color filter portion
In the diameter of completely overlapped part, with second color filter portion with a thickness of the part of the second thickness diameter difference
Value is 2~6 μm；And/or with a thickness of the shape and the imaging of the part of the third thickness in third color filter portion
The shape in hole is identical, and the orthographic projection in the TFT backplate in third color filter portion weighs completely with the imaging hole
Difference in the diameter of folded part, with third color filter portion with a thickness of the diameter of the part of the third thickness is 2
~6 μm.
Optionally, the first thickness is 0, and first thickness part is in first color in first color filter portion
Area accounting in optical filtering portion is less than or equal to 50%；And/or the second thickness is 0, second in second color filter portion
Area accounting of the caliper portion in second color filter portion is less than or equal to 50%；And/or the third is with a thickness of 0, institute
It states area accounting of the third caliper portion in third color filter portion in third color filter portion and is less than or equal to 50%.
Optionally, the first thickness is 1%~50% of the thickness of other parts in first color filter portion, institute
It states area accounting of the first thickness part in first color filter portion in the first color filter portion and is less than or equal to 60%；
And/or the second thickness is 1%~50% of the thickness of other parts in second color filter portion, second face
Area accounting of the second thickness part in second color filter portion is less than or equal to 60% in color optical filtering portion；And/or it is described
Third is with a thickness of 1%~50% of the thickness of other parts in third color filter portion, in third color filter portion
Area accounting of the third caliper portion in third color filter portion is less than or equal to 60%.
Optionally, in the Chong Die with orthographic projection of the part imaging hole in the TFT backplate of the first color filter portion
It is partial with a thickness of first thickness in the case where, it is equal with the partly overlapping imaging hole of first thickness in first color filter portion
Even setting；The orthographic projection overlapping portion with the part imaging hole in the TFT backplate in the second color filter portion and/or
Point with a thickness of second thickness in the case where, it is uniform with the partly overlapping imaging hole of second thickness in second color filter portion
Setting；And/or the orthographic projection lap with the part imaging hole in the TFT backplate in third color filter portion
With a thickness of third thickness in the case where, the imaging hole Chong Die with the third caliper portion in third color filter portion is uniformly set
It sets.
It optionally, further include optical sensing layer, the optical sensing layer includes multiple optical sensing units, the light
Learning sensing unit has in the orthographic projection in the TFT backplate with orthographic projection of the imaging hole in the TFT backplate
Overlapping region.
It optionally, further include encapsulated layer；The chromatic filter layer is set to the encapsulated layer away from the metal light shield layer
Side.
The embodiment of the present invention provides a kind of top light emitting display panel, color by being arranged in the light emission side of top light emitting display panel
Color filtering optical layer can improve environment light into the top light emitting display panel, and reflect through reflection anode layer, to influence to show
The problem of effect；Meanwhile making the orthographic projection lap at least partly imaging hole in TFT backplate in the first color filter portion
With a thickness of first thickness, and first thickness can make less than the thickness of the other parts in the first color filter portion through to be detected
The light of lines reflection passes through first thickness part and imaging hole in the first color filter portion as much as possible, and knows for lines
Not, simultaneously because the thickness of the part in the first color filter portion in addition to first thickness part is greater than first thickness, therefore, phase
Compared with first thickness part, more environment light can be blocked, to improve the accuracy of lines identification.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram for pushing up light emitting display panel provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram for pushing up light emitting display panel provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram for pushing up light emitting display panel provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram for pushing up light emitting display panel provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram for pushing up light emitting display panel provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram for pushing up light emitting display panel provided in an embodiment of the present invention.
Appended drawing reference:
10- substrate；111- grid；112- gate insulation layer；113- active layer；114- source electrode；115- drain electrode；12- metal hides
Photosphere；121- imaging hole；131- reflection anode layer；132- light emitting functional layer；133- cathode layer；14- encapsulated layer；15- black matrix；
The first color filter of 161- portion；The second color filter of 162- portion；163- third color filter portion.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of top light emitting display panel, including thin film transistor (TFT) (Thin Film
Transistor, abbreviation TFT) backboard, it is set in turn in metal light shield layer 12 in TFT backplate, reflection anode layer 131, shines
Functional layer 132, cathode layer 133 and chromatic filter layer；Chromatic filter layer includes the first color filter portion 161, the filter of the second color
Light portion 162 and third color filter portion 163；First color, the second color and third color three primary colours each other；Metal light shield layer 12
With reflection anode layer 131 at least provided with fingerprint identification region, and metal light shield layer 12 and reflection anode layer 131 are in fingerprint recognition
Region has several imaging holes 121；The positive throwing at least partly imaging hole 121 in TFT backplate in the first color filter portion 161
Shadow lap with a thickness of first thickness, thickness of the first thickness less than the other parts in the first color filter portion 161.
Herein, TFT backplate include substrate 10, the TFT that is set on substrate 10, TFT includes grid 111, gate insulation layer
112, active layer 113, source electrode 114, drain electrode 115.In the first adjacent color filter portion 161 with the second color filter portion 162 it
Between, between adjacent the second color filter portion 162 and third color filter portion 163, the first adjacent color filter portion 161 and
It further include black matrix 15 between three color filter portions 163.
Wherein it is possible to be initially formed the first color filter portion 161, the second color filter portion 162 and third color filter portion
163, and then form black matrix 15；It can also be initially formed black matrix 15, and then form the first color filter portion 161, the
Second colors optical filtering portion 162 and third color filter portion 163.
It should be noted that first, the structure of TFT is not defined, as shown in Figs 1-4, TFT can be bottom gate type；
As shown in figure 5, TFT is also possible to top gate type；As shown in fig. 6, TFT is also possible to double grid type.
Second, the material of active layer 113 is not defined, the materials system such as amorphous silicon, oxide, organic can be used
At.
In addition, not being defined to the type of TFT, it can be back channel-type, can also be etch stopper type, it specifically can root
It is formed according to the material and preparation of active layer 113 depending on the technique of source electrode 114 and drain electrode 115.
Third, the top light emitting display panel includes can be with self luminous light emitting functional layer 132, that is, the top shines aobvious
Show that panel is light-emitting display panel, for example, the top light emitting display panel is OLED display panel or quantum dot display surface
Plate.
4th, reflection anode layer 131 includes material that can be reflective, such as the material of reflection anode layer 131 is metal.
5th, the first color, the second color and third color can red each other, green and blue；Alternatively, the first color,
Second color and third color can pinkish red each other, cyan and yellow.
6th, the specific thickness value of first thickness is not defined, it is not thick to removing first in the first color filter portion 161
The specific thickness value of part other than degree part is defined；First thickness is removed in first thickness and the first color filter portion 161
The thickness of part other than part is subject to actual demand.
The thickness difference of part in first thickness and the first color filter portion 161 in addition to first thickness part is not carried out
It limits, as long as first thickness is less than the thickness of the part in the first color filter portion 161 in addition to first thickness part.
Specifically, first thickness be 0, and in the first color filter portion 161 first thickness part in the first color filter portion
Area accounting in 161 is less than or equal to 50%.
For example, it is assumed that first thickness is 0, the gross area in the first color filter portion 161 in the top light emitting display panel
For 0.1m2, then the area of the part in the first color filter portion 161 with a thickness of 0 is less than or equal to 0.05m2。
Herein, preferably in the case where first thickness is 0, first thickness part is first in the first color filter portion 161
Area accounting in color filter portion 161 is less than or equal to 20%.
Alternatively, first thickness is 1%~50% of the thickness of other parts in the first color filter portion 161, the first color
Area accounting of the first thickness part in the first color filter portion 161 is less than or equal to 60% in optical filtering portion 161.
For example, the gross area in the first color filter portion 161 in the top light emitting display panel is 0.1m2, wherein first
Other parts in color filter portion 161 in addition to first thickness part with a thickness of 1 μm, then first thickness is 0.01~0.5 μ
M is less than or equal to 0.06m with a thickness of the area of the part of first thickness in the first color filter portion 1612。
7th, imaging hole 121 includes orthographic projection in TFT backplate and the first color filter portion 161 in TFT backplate
First imaging hole of orthographic projection overlapping, the orthographic projection in TFT backplate and the second color filter portion 162 in TFT backplate just
Project the second imaging hole, the orthographic projection in TFT backplate and positive throwing of the third color filter portion 163 in TFT backplate of overlapping
The third imaging hole of shadow overlapping.
The thickness of the orthographic projection lap at least partly imaging hole 121 in TFT backplate in the first color filter portion 161
Degree is first thickness, is referred to: the first color filter portion 161 and orthographic projection overlapping portion of the first imaging hole of part in TFT backplate
Point with a thickness of first thickness；Alternatively, the first color filter portion 161 and orthographic projection of all first imaging holes in TFT backplate
Lap with a thickness of first thickness.
Herein, preferably in the first color filter portion 161 and orthographic projection overlapping portion of the first imaging hole of part in TFT backplate
Point with a thickness of first thickness in the case where, partly overlapping first imaging hole of first thickness with the first color filter portion 161
It is uniformly arranged, so, can avoid influencing display effect due to the thickness located at various locations by the first color filter portion 161 is different
The problem of fruit.
Wherein, as shown in Figure 1, part in the first color filter portion 161 with a thickness of first thickness in TFT backplate just
Projection can be just completely overlapped with orthographic projection of first imaging hole in TFT backplate；Alternatively, in the first color filter portion 161
It can be with orthographic projection portion of first imaging hole in TFT backplate with a thickness of orthographic projection of the part in TFT backplate of first thickness
Divide overlapping.
Orthographic projection of the part in TFT backplate in the first color filter portion 161 with a thickness of first thickness with the first one-tenth
As hole is in the case where the orthographic projection in TFT backplate partly overlaps, with a thickness of the portion of first thickness in the first color filter portion 161
The area divided can be greater than the area of the first imaging hole, might be less that the area of the first imaging hole.
Herein, with a thickness of the shape of the part of first thickness and the shape of imaging hole 121 preferably in the first color filter portion 161
Shape is identical and has the same center, and the orthographic projection in TFT backplate in the first color filter portion 161 and imaging hole 121 are complete
Difference in the size of the part of overlapping, with the first color filter portion 161 with a thickness of the size of the part of first thickness is 2~6 μ
M influences lines identification accuracy to avoid excessive external environmental light by first thickness part in the first color filter portion 161.
Exemplary, the shape of imaging hole 121 is round, with a thickness of the part of first thickness in the first color filter portion 161
Shape be also round, also, with a thickness of the in orthographic projection of the imaging hole 121 in TFT backplate and the first color filter portion 161
Orthographic projection of the part of one thickness in TFT backplate is concentric circles, also, with a thickness of the first thickness in the first color filter portion 161
Orthographic projection of the part of degree in TFT backplate, 1~3 μm of the edge of the orthographic projection beyond imaging hole 121 in TFT backplate；Or
Person, orthographic projection of the imaging hole 121 in TFT backplate, beyond existing in the first color filter portion 161 with a thickness of the part of first thickness
1~3 μm of the edge of orthographic projection in TFT backplate.
8th, the shape of imaging hole 121 is not defined, such as can be rectangle, polygon, circle, ellipse etc..
9th, the structure of metal light shield layer 12 is not defined, as in Figure 2-4, metal light shield layer 12 can be packet
It includes imaging hole 121 and is laid in the slab construction of the viewing area of the top light emitting display panel；Alternatively, such as Fig. 1, Fig. 5, Fig. 6 institute
Show, TFT backplate includes the TFT of multiple mutually insulateds, and metal light shield layer 12 includes multiple block structures, and multiple block structures can be with
It is electrically connected with source electrode 114, at this point, metal light shield layer 12 may be used as conductive lead wire (such as data line)；Multiple block structures
It can be electrically connected with drain electrode 115, at this point, reflection anode layer 131 can be electrically connected by metal light shield layer 12 with drain electrode 115.That is,
Metal light shield layer 12 can be used not only for lines identification, can also be multiplexed and make another source electrode and/or drain electrode, thus described in simplifying
It pushes up the preparation process of light emitting display panel, save preparation cost.
Tenth, as depicted in figs. 1 and 2, metal light shield layer 12 and reflection anode layer 131 are at least provided with fingerprint identification area
Domain, and metal light shield layer 12 and reflection anode layer 131 have several imaging holes 121: metal light shield layer 12 in fingerprint identification region
It include light hole, and orthographic projection and reflection of the light hole in metal light shield layer 12 in TFT backplate with reflection anode layer 131
Orthographic projection of the light hole in TFT backplate in anode layer 131 is completely overlapped, and by the light hole in metal light shield layer 12 in anti-
The light hole penetrated in anode layer 131 constitutes the imaging hole 121.
The embodiment of the present invention provides a kind of top light emitting display panel, color by being arranged in the light emission side of top light emitting display panel
Color filtering optical layer can improve environment light into the top light emitting display panel, and reflect through reflection anode layer 131, to influence
The problem of display effect；Meanwhile making the positive throwing at least partly imaging hole 121 in TFT backplate in the first color filter portion 161
Shadow lap with a thickness of first thickness, and first thickness is less than the thickness of the other parts in the first color filter portion 161, can
So that the light reflected through lines to be detected passes through first thickness part and imaging in the first color filter portion 161 as much as possible
Hole 121, and identified for lines, simultaneously because the thickness of the part in the first color filter portion 161 in addition to first thickness part
Therefore degree, which is greater than first thickness, compared to first thickness part, can block more environment light, to improve lines identification
Accuracy.
Herein, lines to be detected can be the textured object to be detected of the tool such as fingerprint, palmmprint.Wherein, due to reflection anode
The light-proofness of layer 131 is insufficient, metal light shield layer 12 be include multiple block structures when, compared to slab construction, environment light is more
It is easy by the gap between adjacent block structure, the embodiment of the present invention, which passes through, utilizes the top light emitting display panel, by the
Partial occlusion component environment light in one color filter portion 161 in addition to first thickness part, preferably to improve including multiple
The accuracy of the lines identification of the top light emitting display panel for the metal light shield layer 12 that block structure is constituted.
Optionally, the second color filter portion 162 is Chong Die at least partly orthographic projection of the imaging hole 121 in TFT backplate
It is partial with a thickness of second thickness, thickness of the second thickness less than the other parts in the second color filter portion 162.
It should be noted that first, the specific thickness value of second thickness is not defined, not to the second color filter portion
The specific thickness value of part in 162 in addition to second thickness part is defined；Second thickness and the second color filter portion 162
In the thickness of part in addition to second thickness part be subject to actual demand.
The thickness difference of part in second thickness and the second color filter portion 162 in addition to second thickness part is not carried out
It limits, as long as second thickness is less than the thickness of the part in the second color filter portion 162 in addition to second thickness part.
Specifically, second thickness be 0, and in the second color filter portion 162 second thickness part in the second color filter portion
Area accounting in 162 is less than or equal to 50%.
For example, it is assumed that second thickness is 0, the gross area in the second color filter portion 162 in the top light emitting display panel
For 0.1m2, then the area of the part in the second color filter portion 162 with a thickness of 0 is less than or equal to 0.05m2。
Herein, preferably in the case where second thickness is 0, second thickness part is second in the second color filter portion 162
Area accounting in color filter portion 162 is less than or equal to 20%.
Alternatively, second thickness is 1%~50% of the thickness of other parts in the second color filter portion 162, the second color
Area accounting of the second thickness part in the second color filter portion 162 is less than or equal to 60% in optical filtering portion 162.
For example, the gross area in the second color filter portion 162 in the top light emitting display panel is 0.1m2, wherein second
Other parts in color filter portion 162 in addition to second thickness part with a thickness of 1 μm, then second thickness is 0.01~0.5 μ
M is less than or equal to 0.06m with a thickness of the area of the part of second thickness in the second color filter portion 1622。
The orthographic projection overlapping portion at least partly imaging hole 121 in TFT backplate in the second, the second color filter portion 162
Point with a thickness of second thickness, refer to: the second color filter portion 162 and orthographic projection of the second imaging hole of part in TFT backplate
Lap with a thickness of second thickness；Alternatively, the second color filter portion 162 is with all second imaging holes in TFT backplate
Orthographic projection lap with a thickness of second thickness.
Herein, preferably in the second color filter portion 162 and orthographic projection overlapping portion of the second imaging hole of part in TFT backplate
Point with a thickness of second thickness in the case where, partly overlapping second imaging hole of second thickness with the second color filter portion 162
It is uniformly arranged, so, can avoid influencing display effect due to the thickness located at various locations by the second color filter portion 162 is different
The problem of fruit.
Wherein, as shown in Fig. 2, part in the second color filter portion 162 with a thickness of second thickness in TFT backplate just
Projection can be just completely overlapped with orthographic projection of second imaging hole in TFT backplate；Alternatively, in the second color filter portion 162
It can be with orthographic projection portion of second imaging hole in TFT backplate with a thickness of orthographic projection of the part in TFT backplate of second thickness
Divide overlapping.
Orthographic projection of the part in TFT backplate in the second color filter portion 162 with a thickness of second thickness with the second one-tenth
As hole is in the case where the orthographic projection in TFT backplate partly overlaps, with a thickness of the portion of second thickness in the second color filter portion 162
The area divided can be greater than the area of the second imaging hole, might be less that the area of the second imaging hole.
Herein, with a thickness of the shape of the part of second thickness and the shape of imaging hole 121 preferably in the second color filter portion 162
Shape is identical and has the same center, and the orthographic projection in TFT backplate in the second color filter portion 162 and imaging hole 121 are complete
Difference in the size of the part of overlapping, with the second color filter portion 162 with a thickness of the size of the part of second thickness is 2~6 μ
M influences lines identification accuracy to avoid excessive external environmental light by second thickness part in the second color filter portion 162.
Exemplary, the shape of imaging hole 121 is round, with a thickness of the part of second thickness in the second color filter portion 162
Shape be also round, also, with a thickness of the in orthographic projection of the imaging hole 121 in TFT backplate and the second color filter portion 162
Orthographic projection of the part of two thickness in TFT backplate is concentric circles, also, with a thickness of the second thickness in the second color filter portion 162
Orthographic projection of the part of degree in TFT backplate, 1~3 μm of the edge of the orthographic projection beyond imaging hole 121 in TFT backplate；Or
Person, orthographic projection of the imaging hole 121 in TFT backplate, beyond existing in the second color filter portion 162 with a thickness of the part of second thickness
1~3 μm of the edge of orthographic projection in TFT backplate.
The thickness of third, the part in the second color filter portion 162 in addition to second thickness part can be with the first color
The thickness of part in optical filtering portion 161 in addition to first thickness part is equal, can also be unequal.
It is preferred that the thickness of the part in the second color filter portion 162 in addition to second thickness part and the first color filter portion
The thickness of part in 161 in addition to first thickness part is equal, so, can be formed simultaneously the second color filter portion 162
In the part in addition to second thickness part and the part in the first color filter portion 161 in addition to first thickness part.
4th, first thickness can be equal with second thickness, can also be unequal.
It is preferred that first thickness is equal to second thickness, so, second thickness part is removed in the second color filter portion 162
The thickness of the part in addition situation equal with the thickness of part in the first color filter portion 161 in addition to first thickness part
Under, second thickness in the part of first thickness and the second color filter portion 162 can be formed simultaneously in the first color filter portion 161
Part.
In the embodiment of the present invention, by make the second color filter portion 162 at least partly imaging hole 121 in TFT backplate
On orthographic projection lap with a thickness of second thickness, and second thickness is less than the other parts in the second color filter portion 162
Thickness, the light reflected through lines to be detected can be made to pass through second thickness in the second color filter portion 162 as much as possible
Part and imaging hole 121, and identified for lines, simultaneously because in the second color filter portion 162 in addition to second thickness part
Part thickness be greater than second thickness compared to second thickness part, more environment light therefore can be blocked, with improve
The accuracy of lines identification.
Optionally, as shown in figure 3, third color filter portion 163 at least partly imaging hole 121 in TFT backplate
Orthographic projection lap with a thickness of third thickness, third thickness is less than the thickness of the other parts in third color filter portion 163.
It should be noted that first, the specific thickness value of third thickness is not defined, not to third color filter portion
The specific thickness value of part in 163 in addition to third caliper portion is defined；Third thickness and third color filter portion 163
In the thickness of part in addition to third caliper portion be subject to actual demand.
The thickness difference of part in third thickness and third color filter portion 163 in addition to third caliper portion is not carried out
It limits, as long as third thickness is less than the thickness of the part in third color filter portion 163 in addition to third caliper portion.
Specifically, third is with a thickness of 0, and in third color filter portion 163 third caliper portion in third color filter portion
Area accounting in 163 is less than or equal to 50%.
For example, it is assumed that third is with a thickness of 0, the gross area in the third color filter portion 163 in the top light emitting display panel
For 0.1m2, then the area of the part in third color filter portion 163 with a thickness of 0 is less than or equal to 0.05m2。
Herein, preferably in the case where third is with a thickness of 0, third caliper portion is in third in third color filter portion 163
Area accounting in color filter portion 163 is less than or equal to 20%.
Alternatively, third with a thickness of the thickness of other parts in third color filter portion 163 1%~50%, third color
Area accounting of the third caliper portion in third color filter portion 163 is less than or equal to 60% in optical filtering portion 163.
For example, the gross area in the third color filter portion 163 in the top light emitting display panel is 0.1m2, wherein third
Other parts in color filter portion 163 in addition to third caliper portion with a thickness of 1 μm, then third is with a thickness of 0.01~0.5 μ
M is less than or equal to 0.06m with a thickness of the area of the part of third thickness in third color filter portion 1632。
Second, the orthographic projection overlapping portion at least partly imaging hole 121 in TFT backplate in third color filter portion 163
Point with a thickness of third thickness, refer to: third color filter portion 163 and orthographic projection of the third imaging hole in part in TFT backplate
Lap with a thickness of third thickness；Alternatively, third color filter portion 163 and all third imaging holes are in TFT backplate
Orthographic projection lap with a thickness of third thickness.
Herein, preferably in third color filter portion 163 and orthographic projection overlapping portion of the third imaging hole in part in TFT backplate
Point with a thickness of third thickness in the case where, the third imaging hole Chong Die with the third caliper portion in third color filter portion 163
It is uniformly arranged, so, can avoid influencing display effect due to the thickness located at various locations by third color filter portion 163 is different
The problem of fruit.
Wherein, as shown in figure 3, part in third color filter portion 163 with a thickness of third thickness in TFT backplate just
Projection can be just completely overlapped with orthographic projection of the third imaging hole in TFT backplate；Alternatively, in third color filter portion 163
It can be with orthographic projection portion of the third imaging hole in TFT backplate with a thickness of orthographic projection of the part in TFT backplate of third thickness
Divide overlapping.
The orthographic projection in TFT backplate of part in third color filter portion 163 with a thickness of third thickness and third at
As hole is in the case where the orthographic projection in TFT backplate partly overlaps, with a thickness of the portion of third thickness in third color filter portion 163
The area divided can be greater than the area of third imaging hole, might be less that the area of third imaging hole.
Herein, with a thickness of the shape of the part of third thickness and the shape of imaging hole 121 preferably in third color filter portion 163
Shape is identical and has the same center, and the orthographic projection in TFT backplate in third color filter portion 163 and imaging hole 121 are complete
Difference in the size of the part of overlapping, with third color filter portion 163 with a thickness of the size of the part of third thickness is 2~6 μ
M influences lines identification accuracy to avoid excessive external environmental light by third caliper portion in third color filter portion 163.
Exemplary, the shape of imaging hole 121 is round, with a thickness of the part of third thickness in third color filter portion 163
Shape be also round, also, with a thickness of the in orthographic projection of the imaging hole 121 in TFT backplate and third color filter portion 163
Orthographic projection of the part of three thickness in TFT backplate is concentric circles, also, with a thickness of third thickness in third color filter portion 163
Orthographic projection of the part of degree in TFT backplate, 1~3 μm of the edge of the orthographic projection beyond imaging hole 121 in TFT backplate；Or
Person, orthographic projection of the imaging hole 121 in TFT backplate, beyond existing in third color filter portion 163 with a thickness of the part of third thickness
1~3 μm of the edge of orthographic projection in TFT backplate.
Third, the thickness of the part in third color filter portion 163 in addition to third caliper portion can only with the first face
The thickness of part in color optical filtering portion 161 in addition to first thickness part is equal, alternatively, except the in third color filter portion 163
The thickness of part other than three caliper portions can only with the part in the second color filter portion 162 in addition to second thickness part
Thickness it is equal, alternatively, the thickness of the part in third color filter portion 163 in addition to third caliper portion can be with the second face
First thickness portion is removed in the thickness of part in color optical filtering portion 162 in addition to second thickness part and the first color filter portion 161
The thickness of part other than point is equal, alternatively, the thickness of the part in third color filter portion 163 in addition to third caliper portion
Can in the thickness and the first color filter portion 161 of the part in the second color filter portion 162 in addition to second thickness part
The thickness of part in addition to first thickness part is unequal.
It is preferred that the thickness of the part in third color filter portion 163 in addition to third caliper portion and the second color filter portion
In the thickness of part in 162 in addition to second thickness part and the first color filter portion 161 in addition to first thickness part
Partial thickness is equal, so, can be formed simultaneously the portion in third color filter portion 163 in addition to third caliper portion
Divide, remove first thickness in part and the first color filter portion 161 in the second color filter portion 162 in addition to second thickness part
Part other than part.
4th, third thickness can be only equal with first thickness, alternatively, third thickness can be only equal with second thickness,
Alternatively, third thickness can be equal to second thickness and first thickness, alternatively, third thickness and first thickness and second thickness are not
It is equal.
It is preferred that third thickness is equal to first thickness and second thickness, so, except the in third color filter portion 163
The thickness of part in the thickness of part other than three caliper portions and the second color filter portion 162 in addition to second thickness part
In the case where equal with the thickness of part in the first color filter portion 161 in addition to first thickness part, can be formed simultaneously
The part of first thickness in one color filter portion 161, the part of second thickness and the filter of third color in the second color filter portion 162
The part of third thickness in light portion 163.
In the embodiment of the present invention, by make third color filter portion 163 at least partly imaging hole 121 in TFT backplate
On orthographic projection lap with a thickness of third thickness, and third thickness is less than the other parts in third color filter portion 163
Thickness, the light reflected through lines to be detected can be made to pass through third thickness in third color filter portion 163 as much as possible
Part and imaging hole 121, and identified for lines, simultaneously because in third color filter portion 163 in addition to third caliper portion
Part thickness be greater than third thickness compared to third caliper portion, more environment light therefore can be blocked, with improve
The accuracy of lines identification.
Optionally, as shown in Figure 3 and Figure 4, the top light emitting display panel further includes optical sensing layer, optical sensing layer packet
Multiple optical sensing units 20 are included, orthographic projection of the optical sensing unit 20 in TFT backplate and an imaging hole 121 exist
Orthographic projection in TFT backplate has overlapping region.
It should be noted that first, it is hidden in TFT backplate away from metal as shown in figure 3, optical sensing unit 20 can be set
12 side of photosphere；As shown in figure 4, optical sensing unit 20 can be set it is close from 12 side of metal light shield layer in TFT backplate.
Second, each optical sensing unit 20 is for converting optical signal into electric signal, wherein optical sensing unit 20 can
To be photosensitive sensor, photoelectric sensor etc..
In the embodiment of the present invention, the light that reflects through lines to be detected passes through first thickness part, second thickness part, the
It after three caliper portions, is irradiated on optical sensing unit 20 using imaging hole 121, optical sensing unit 20 converts optical signal
For electric signal, to realize that lines identifies.
Optionally, as shown in Figure 1, further including encapsulated layer 14；Chromatic filter layer is set to encapsulated layer 14 away from metal shading
12 side of layer.
It, can be with by the way that chromatic filter layer is set to encapsulated layer 14 from 12 side of metal light shield layer in the embodiment of the present invention
After forming reflection anode layer 131, light emitting functional layer 132, cathode layer 133, it is packaged at once, to avoid air, steam etc.
Into in light emitting functional layer 132, the performance and used life of light emitting functional layer 132 is influenced.
On this basis, as shown in Fig. 2, chromatic filter layer can also be set between encapsulated layer 14 and cathode layer 133.
Wherein it is possible to first form chromatic filter layer, and then the encapsulation that chromatic filter layer will be formed on encapsulated layer 14
Layer 14 crosses Optical transparent adhesive and is bonded in cathode layer 133 away from 12 side of metal light shield layer.
The embodiment of the present invention also provides a kind of preparation method for pushing up light emitting display panel, as shown in Figure 1, the top shines and shows
Show that panel includes TFT backplate, metal light shield layer 12, the reflection anode layer 131, light emitting functional layer being set in turn in TFT backplate
132, cathode layer 133；Metal light shield layer 12 and reflection anode layer 131 are at least provided with fingerprint identification region, and metal light shield layer
12 and reflection anode layer 131 fingerprint identification region have several imaging holes 121.
The described method includes: forming chromatic filter layer away from TFT backplate side in cathode layer 133；Chromatic filter layer includes
First color filter portion 161, the second color filter portion 162 and third color filter portion 163；First color, the second color and
Three colors three primary colours each other；The orthographic projection weight at least partly imaging hole 121 in TFT backplate in the first color filter portion 161
Folded part with a thickness of first thickness, thickness of the first thickness less than the other parts in the first color filter portion 161.
Specifically, forming chromatic filter layer away from TFT backplate side in cathode layer 133 using photoetching process, comprising:
Colored filter film is formed on substrate 10, and development is exposed to colored filter film using mask plate and forms the filter of the first color
Light portion 161, the second color filter portion 162 and third color filter portion 163.
Wherein, when first thickness is 0, the mask plate includes exposure area and occlusion area, if colored filter film
Material belong to positive photoresist, then exposure area is corresponding with the part of first thickness in the first color filter portion 161, occlusion area and
Part in one color filter portion 161 in addition to first thickness part is corresponding；If the material of colored filter film belongs to negtive photoresist,
Exposure area is corresponding with the part in the first color filter portion 161 in addition to first thickness part, occlusion area and the first color
The part of first thickness is corresponding in optical filtering portion 161.
When first thickness is not 0, mask plate includes half-exposure region and occlusion area, if the material of colored filter film
Belong to positive photoresist, then occlusion area is corresponding with the part in the first color filter portion 161 in addition to first thickness part, half-exposure area
Domain is corresponding with the part of first thickness in the first color filter portion 161.
The embodiment of the present invention provides a kind of preparation method of display panel, technical effect and a kind of aforementioned display panel
Technical effect is identical, and details are not described herein.
Optionally, as shown in Fig. 2, the second color filter portion 162 at least partly imaging hole 121 in TFT backplate
Orthographic projection lap with a thickness of second thickness, thickness of the second thickness less than the other parts in the second color filter portion 162.
Specifically, forming chromatic filter layer away from TFT backplate side in cathode layer 133 using photoetching process, comprising:
Colored filter film is formed on substrate 10, and development is exposed to colored filter film using mask plate and forms the filter of the first color
Light portion 161, the second color filter portion 162 and third color filter portion 163.
Wherein, when second thickness is 0, the mask plate includes exposure area and occlusion area, if colored filter film
Material belong to positive photoresist, then exposure area is corresponding with the part of second thickness in the second color filter portion 162, occlusion area and
Part in second colors optical filtering portion 162 in addition to first thickness part is corresponding；If the material of colored filter film belongs to negtive photoresist,
Exposure area is corresponding with the part in the second color filter portion 162 in addition to second thickness part, occlusion area and the second color
The part of second thickness is corresponding in optical filtering portion 162.
When second thickness is not 0, mask plate includes half-exposure region and occlusion area, if the material of colored filter film
Belong to positive photoresist, then occlusion area is corresponding with the part in the second color filter portion 162 in addition to second thickness part, half-exposure area
Domain is corresponding with the part of second thickness in the second color filter portion 162.
In the embodiment of the present invention, by make the second color filter portion 162 at least partly imaging hole 121 in TFT backplate
On orthographic projection lap with a thickness of second thickness, and second thickness is less than the other parts in the second color filter portion 162
Thickness, the light reflected through lines to be detected can be made to pass through second thickness in the second color filter portion 162 as much as possible
Part and imaging hole 121, and identified for lines, simultaneously because in the second color filter portion 162 in addition to second thickness part
Part thickness be greater than second thickness compared to second thickness part, more environment light therefore can be blocked, with improve
The accuracy of lines identification.
Optionally, as shown in figure 3, third color filter portion 163 at least partly imaging hole 121 in TFT backplate
Orthographic projection lap with a thickness of third thickness, third thickness is less than the thickness of the other parts in third color filter portion 163.
Specifically, forming chromatic filter layer away from TFT backplate side in cathode layer 133 using photoetching process, comprising:
Colored filter film is formed on substrate 10, and development is exposed to colored filter film using mask plate and forms the filter of the first color
Light portion 161, the second color filter portion 162 and third color filter portion 163.
Wherein, when third is with a thickness of 0, the mask plate includes exposure area and occlusion area, if colored filter film
Material belong to positive photoresist, then exposure area is corresponding with the part of third thickness in third color filter portion 163, occlusion area and
Part in three color filter portions 163 in addition to third caliper portion is corresponding；If the material of colored filter film belongs to negtive photoresist,
Exposure area is corresponding with the part in third color filter portion 163 in addition to third caliper portion, occlusion area and third color
The part of third thickness is corresponding in optical filtering portion 163.
When third thickness is not 0, mask plate includes half-exposure region and occlusion area, if the material of colored filter film
Belong to positive photoresist, then occlusion area is corresponding with the part in third color filter portion 163 in addition to third caliper portion, half-exposure area
Domain is corresponding with the part of third thickness in third color filter portion 163.
In the embodiment of the present invention, by make third color filter portion 163 at least partly imaging hole 121 in TFT backplate
On orthographic projection lap with a thickness of third thickness, and third thickness is less than the other parts in third color filter portion 163
Thickness, the light reflected through lines to be detected can be made to pass through third thickness in third color filter portion 163 as much as possible
Part and imaging hole 121, and identified for lines, simultaneously because in third color filter portion 163 in addition to third caliper portion
Part thickness be greater than third thickness compared to third caliper portion, more environment light therefore can be blocked, with improve
The accuracy of lines identification.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of top light emitting display panel, which is characterized in that including TFT backplate, the metal being set in turn in the TFT backplate
Light shield layer, reflection anode layer, light emitting functional layer, cathode layer and chromatic filter layer；The chromatic filter layer includes the first color
Optical filtering portion, the second color filter portion and third color filter portion；First color, the second color and third color three primary colours each other；
The metal light shield layer and the reflection anode layer are at least provided with fingerprint identification region, and the metal light shield layer and institute
Stating reflection anode layer has several imaging holes in the fingerprint identification region；
The thickness of the orthographic projection lap at least partly described imaging hole in the TFT backplate in the first color filter portion
For first thickness, thickness of the first thickness less than the other parts in the first color filter portion.
2. top light emitting display panel according to claim 1, which is characterized in that second color filter portion at least
Orthographic projection lap of the part imaging hole in the TFT backplate with a thickness of second thickness, the second thickness is small
In the thickness of the other parts in second color filter portion.
3. top light emitting display panel according to claim 1 or 2, which is characterized in that third color filter portion with
Orthographic projection lap of at least partly described imaging hole in the TFT backplate with a thickness of third thickness, the third is thick
Degree is less than the thickness of the other parts in third color filter portion.
4. top light emitting display panel according to claim 3, which is characterized in that first color filter portion, the second face
Color optical filtering portion, third color filter portion in the TFT backplate orthographic projection and all imaging holes in the TFT backplate
The thickness of orthographic projection lap be respectively the first thickness, the second thickness, the third thickness.
5. top light emitting display panel according to claim 3, which is characterized in that in first color filter portion with a thickness of
The shape of the part of the first thickness is identical as the shape of the imaging hole and has the same center, first color
The size of the orthographic projection and the completely overlapped part of the imaging hole in the TFT backplate in optical filtering portion, with first face
Difference in color optical filtering portion with a thickness of the size of the part of the first thickness is 2~6 μm；
And/or with a thickness of the shape of the part of the second thickness and the shape of the imaging hole in second color filter portion
Shape is identical, and orthographic projection in the TFT backplate and the completely overlapped portion of the imaging hole in second color filter portion
The diameter divided is 2~6 μm with the difference in second color filter portion with a thickness of the diameter of the part of the second thickness；
And/or with a thickness of the shape of the part of the third thickness and the shape of the imaging hole in third color filter portion
Shape is identical, and orthographic projection in the TFT backplate and the completely overlapped portion of the imaging hole in third color filter portion
The diameter divided is 2~6 μm with the difference in third color filter portion with a thickness of the diameter of the part of the third thickness.
6. top light emitting display panel according to claim 3, which is characterized in that
The first thickness is 0, and first thickness part is in first color filter portion in first color filter portion
Area accounting is less than or equal to 50%；
And/or the second thickness is 0, second thickness part is in second color filter in second color filter portion
Area accounting in portion is less than or equal to 50%；
And/or the third, with a thickness of 0, third caliper portion is in the third color filter in third color filter portion
Area accounting in portion is less than or equal to 50%.
7. top light emitting display panel according to claim 3, which is characterized in that
The first thickness is 1%~50% of the thickness of other parts in first color filter portion, first color
Area accounting of the first thickness part in first color filter portion is less than or equal to 60% in optical filtering portion；
And/or the second thickness is 1%~50% of the thickness of other parts in second color filter portion, described the
Area accounting of the second thickness part in second color filter portion is less than or equal to 60% in second colors optical filtering portion；
And/or the third is with a thickness of 1%~50% of the thickness of other parts in third color filter portion, described
Area accounting of the third caliper portion in third color filter portion is less than or equal to 60% in three color filter portions.
8. top light emitting display panel according to claim 3, which is characterized in that in the first color filter portion and part institute
Imaging hole is stated in the case where the orthographic projection lap in the TFT backplate is with a thickness of first thickness, with first face
The partly overlapping imaging hole of first thickness in color optical filtering portion is uniformly arranged；
And/or the orthographic projection lap with the part imaging hole in the TFT backplate in the second color filter portion
In the case where with a thickness of second thickness, uniformly set with the partly overlapping imaging hole of second thickness in second color filter portion
It sets；
And/or the orthographic projection lap with the part imaging hole in the TFT backplate in third color filter portion
In the case where with a thickness of third thickness, the imaging hole Chong Die with the third caliper portion in third color filter portion is uniformly set
It sets.
9. top light emitting display panel according to claim 1, which is characterized in that further include optical sensing layer, the optics
Sensing layer includes multiple optical sensing units, orthographic projection of the optical sensing unit in the TFT backplate with one
Orthographic projection of the imaging hole in the TFT backplate has overlapping region.
10. top light emitting display panel according to claim 1, which is characterized in that further include encapsulated layer；
The chromatic filter layer is set to the encapsulated layer away from metal light shield layer side.
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| CN201811369176.9A CN109545825B (en) | 2018-11-16 | 2018-11-16 | Top-emitting display panel |
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| CN201811369176.9A CN109545825B (en) | 2018-11-16 | 2018-11-16 | Top-emitting display panel |
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| CN114420876A (en) * | 2022-01-28 | 2022-04-29 | 武汉天马微电子有限公司 | Display panel and display device |
| US11836321B2 (en) | 2021-07-23 | 2023-12-05 | AUO Corporation | Optical sensing device |
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| CN109545825B (en) | 2021-02-02 |
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