CN110472615A - Display panel and its driving method - Google Patents
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- CN110472615A CN110472615A CN201910779172.6A CN201910779172A CN110472615A CN 110472615 A CN110472615 A CN 110472615A CN 201910779172 A CN201910779172 A CN 201910779172A CN 110472615 A CN110472615 A CN 110472615A
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
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- 238000010586 diagram Methods 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 108010076504 Protein Sorting Signals Proteins 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
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Classifications
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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
-
- 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
- G06V40/1365—Matching; Classification
Abstract
Display panel and its driving method.Display panel includes first time display pixel, fingerprint sensing unit, second of display pixel and sensing signal output line.Fingerprint sensing unit is configured in first time display pixel.Sensing signal output line is electrically connected fingerprint sensing unit, and extends in a first direction between first time display pixel and second of display pixel.Do not show data line configuration between first time display pixel and second of display pixel.
Description
Technical field
The invention relates to a kind of display panel and its driving methods.
Background technique
Fingerprint is optimal bio-identification password, unique.As equipment and identification technology tend to mature and universal,
In addition to house protection disengaging control, personal document, payment system when identity authentication, or need height control pass in and out field
Institute is outer, and in recent years, fingerprint acquisition apparatus is also common in running gear to be identified as application.Traditional fingerprint acquisition apparatus is benefit
Photosensitive element is penetrated with backlight and reaches finger, wherein finger print has the reflection of Wave crest and wave trough.Photosensitive element receives anti-
The difference for being emitted back towards the light source come and detecting Wave crest and wave trough light source, and then the sensing of fingerprint can be carried out.
Summary of the invention
The present invention provides a kind of display panel and its driving method.
An embodiment according to the present invention, proposes a kind of display panel comprising first time display pixel, fingerprint sensing list
Member, second of display pixel and sensing signal output line.Fingerprint sensing unit is configured in first time display pixel.Sensing signal is defeated
Outlet is electrically connected fingerprint sensing unit, and extend in a first direction first time display pixel and second display pixel it
Between.Do not show data line configuration between first time display pixel and second of display pixel.
According to another embodiment of the present invention, the driving method for proposing a kind of display panel is included in fingerprint recognition mode
Period drives several secondary display pixels using display scan frequency (Fd), and drives several fingers using sensing scan frequency (Fs)
Line sensing unit.Fs/Fd≤1.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Detailed description of the invention
Fig. 1 is the circuit diagram according to the display panel of an embodiment.
Fig. 2 is painted the partial circuit schematic diagram of the display panel of Fig. 1.
Fig. 3 is the timing waveform that time display pixel is driven in an embodiment.
During Fig. 4 is fingerprint recognition mode, the timing waveform of fingerprint sensing unit is driven.
Fig. 5 is the timing waveform that time display pixel is driven in another embodiment.
Wherein, appended drawing reference:
102: display panel
104: pixel
106A: first time display pixel
106B: second display pixel
106C: third time display pixel
106D: the four display pixel
207: sensing element
208、2081、2082: fingerprint sensing unit
211: integrating circuit
C: capacitor
D1: first direction
D2: second direction
Gp, Gp_n, Gp_n+1: display scan line
Gs, Gs_n, Gs_n+1, Gs_n+2: sensing scan line
K, Kn, Kn+1, Kn+2: sensing signal output line
N1, N2: node
PG1: first order sub-pixel group
PG2: second order sub-pixel group
Q: endpoint
R: red sub-pixel
G: green sub-pixel
B: blue sub-pixels
W: white sub-pixel
S: display data line
SP1: the first group shows data line
SP2: the second group shows data line
Sn: third shows data line
Sn+1: the first display data line
Sn+2: the second display data line
Sn+3: the four display data line
Tp: display switch transistor
Tw: sense switch transistor
Vref: reference potential
Vb: level current potential
Δ V1, Δ V2: potential difference
Frame: picture cycle
Specific embodiment
Structural principle and working principle of the invention are described in detail with reference to the accompanying drawing:
The present invention is hereinafter described more fully with reference to the accompanying drawings, exemplary implementation the invention is shown in the accompanying drawings
Example.As the skilled person will recognize, described embodiment can be modified in a variety of ways, without departing from
The spirit or scope of the present invention.
It will be appreciated that though term " first ", " second ", " third " etc. herein can be used for describing various elements,
Component, regions, layers, and/or portions, but these component, assembly units, region, and/or part should not be limited by these terms.This
A little terms are only used for distinguishing a component, assembly unit, region, layer or part and another component, assembly unit, region, layer or part
It opens.Therefore, " first element " discussed below, " component ", " region ", " layer " or " part " can be referred to as second element, portion
Part, region, layer or part are without departing from teaching herein.
Term used herein is used for the purpose of for the purpose of describing particular embodiments, rather than restrictive.Such as this paper institute
It uses, except non-content explicitly indicates that, otherwise singular " one ", "one" and "the" are intended to include plural form, including
"at least one"."or" indicates "and/or".As it is used herein, term "and/or" includes one or more related institute lists
Any and all combinations of purpose.It is also understood that when used in this manual, term " includes " and/or " comprising " are specified
The feature, region, entirety, step, operation, the presence of element and/or component, but be not excluded for one or more of the other feature,
The presence or addition of region entirety, step, operation, component, assembly unit and/or combination thereof.
" about " used herein, " approximation " or " substantial " includes described value and determines in those of ordinary skill in the art
Particular value acceptable deviation range in average value, it is contemplated that the spy of the measurement and error relevant to measurement that are discussed
Fixed number amount (that is, limitation of measuring system).For example, " about " can indicate in one or more standard deviations of described value, or
± 30%, in ± 20%, ± 10%, ± 5%.Furthermore " about " used herein, " approximation " or " substantial " can be according to optical
Matter, etching property or other properties to select more acceptable deviation range or standard deviation, and can not have to a standard deviation
It is applicable in whole property.
Unless otherwise defined, all terms (including technical and scientific term) used herein have leads with belonging to the present invention
The normally understood identical meaning of the those of ordinary skill in domain.It will be further appreciated that such as in usually used dictionary
Those of definition term should be interpreted as having and their meanings in the relevant technologies and context of the invention are consistent
Meaning, and will not be interpreted Utopian or excessively formal meaning, unless clearly definition so herein.
Exemplary embodiment is described herein with reference to the sectional view of the schematic diagram as idealized embodiments.It therefore, can be with
Anticipate the change in shape of the diagram of the result as such as manufacturing technology and/or tolerance.Therefore, embodiment as described herein is not
It should be construed as limited to the specific shape in region as shown here, but including such as form variations caused by manufacturing.Example
Such as, it is illustrated and described as flat region usually and can have coarse and/or nonlinear characteristic.Acute angle shown in addition, can be with
It is round.Therefore, region shown in figure is substantially schematical, and their shape is not intended to the essence for showing region
True shape, and not be intended to limit the scope of the claims.
Fig. 1 is please referred to, for according to the circuit diagram of the display panel 102 of an embodiment.In embodiment, display panel
102 be liquid crystal display panel, and including array arrangement pixel, display data line S, display scan line Gp, sensing scan line Gs,
And sensing signal output line K.Pixel includes the secondary display pixel of different colours, for example including red sub-pixel R, green sub-pixel
G, blue sub-pixels B, and/or white sub-pixel W.It is explained for the pixel 104 shown in the dashed box, pixel 104 includes conduct
The first time display pixel 106A of white sub-pixel W, as second of display pixel 106B of red sub-pixel R, as blue
The third time display pixel 106C of sub-pixel B and the 4th display pixel 106D as green sub-pixel G.Secondary display pixel
Including display switch transistor Tp.Pixel may include fingerprint sensing unit 208, and fingerprint sensing unit 208 is configurable on time display
In pixel.In one embodiment, fingerprint sensing unit 208 configurations will not influence other color sub pixels in white sub-pixel W
Such as the optical appearance of red sub-pixel R, green sub-pixel G and blue sub-pixels B, therefore display device can have excellent display product
Matter.White sub-pixel W can be used to control the brightness of display picture.Fingerprint sensing unit 208 may include sense switch transistor Tw.
Secondary display pixel can matrix arrangement.In one embodiment, white sub-pixel W and green sub-pixel G D1 in a first direction
It submits mispairing and is set to first order sub-pixel group PG1.The surprise of first order sub-pixel group PG1 configuration in a second direction d 2
Numerical digit is set and one of even number position, illustrates by taking Fig. 1 as an example, first order sub-pixel group PG1 can be in a second direction d 2 from most
The even number line position that number comes from left to right, i.e. the 2nd line position is set, the 4th line position is set, the 6th line position is set and the secondary display of eighth row position arrangement
Pixel.It is second order sub-pixel group PG2 that red sub-pixel R and blue sub-pixels B is interconnected in the first direction dl.The
Two arrangement sub-pixel groups PG2 are another odd positions and even number position, illustrate by taking Fig. 1 as an example, second order sub-pixel
Group PG2 can count the odd-numbered line position of coming turning right from the left side, i.e., the 1st line position is set, the 3rd line position is set, the 5th line position is set and the 7th row
The secondary display pixel of position arrangement.It can be the arrangement of unit configuring matrix with pixel 104 shown in FIG. 1, wherein third time display picture
Plain 106C (blue sub-pixels B), first time display pixel 106A (white sub-pixel W), second display pixel 106B (red time
Pixel R) and the 4th display pixel 106D (green sub-pixel G) sequential in a second direction d 2.But the pixel of this exposure
Definition is not limited to this.First direction D1 is different from second direction D2, such as first direction D1 can substantially perpendicular second direction
D2.In one embodiment, first direction D1 can be Y-direction, and second direction D2 can be X-direction.In one embodiment, first direction D1
It can be line direction, and second direction D2 can be column direction.
Sensing signal output line K, including the output of sensing signal output line Kn, sensing signal output line Kn+1, sensing signal
Line Kn+2 etc. may extend away in a second direction d 2, and be electrically connected the source of the sense switch transistor Tw of fingerprint sensing unit 208
Pole.It is explained by taking sensing signal output line Kn as shown in Figure 1 as an example, all positions of fingerprint sensing unit 208 being electrically connected
In the same side of sensing signal output line Kn.Sensing signal output line Kn configure the 2nd row secondary display pixel (including first time
Display pixel 106A) and the secondary display pixel (including second of display pixel 106B) of the 3rd row between, and without display data line
S is configured between the secondary display pixel of the 2nd row and the secondary display pixel of the 3rd row.Sensing signal output line Kn+1 is configured in the 4th row
Secondary display pixel and the 5th row secondary display pixel between, and without display data line S configuration the 4th row secondary display pixel
And the 5th row secondary display pixel between.It can the rest may be inferred this configuration concept.
Display data line S may include extend in the first direction dl first display data line Sn+1, second display data
Line Sn+2, third show data line Sn, the 4th display data line Sn+3 etc..Show that data line S includes that the first group shows number
Data line SP2 is shown according to line SP1 and the second group.First group shows that the display data line of data line SP1 includes the first display
Data line Sn+1, the 4th display data line Sn+3 etc., are electrically connected the white sub-pixel of first order sub-pixel group PG1
The source electrode of the display switch transistor Tp of W and green sub-pixel G.Second group shows that the display data line of data line SP2 includes
Second display data line Sn+2, third show data line Sn etc., are electrically connected the blue of second order sub-pixel group PG2
The source electrode of the display switch transistor Tp of sub-pixel B and red sub-pixel R.As shown in Figure 1, the first display data line Sn+1 is electrical
It is connected to the first order sub-pixel group PG1 that the 2nd line position is set, it is aobvious including the first time in pixel 104 as white sub-pixel W
Show pixel 106A.Second display data line Sn+2 is electrically connected at the second order sub-pixel group that the 3rd line position is set
PG2, including second of display pixel 106B in pixel 104 as red sub-pixel R.Third shows that data line Sn is electrically connected
It is electrically connected at the second order sub-pixel group PG2 that the 1st line position is set, including the third in pixel 104 as blue sub-pixels B
Secondary display pixel 106C.4th display data line Sn+3 is electrically connected at the first order sub-pixel group PG1 that the 4th line position is set,
Including the 4th display pixel 106D in pixel 104 as green sub-pixel G.
First group shows that a display data line of data line SP1 and the second group show a display number of data line SP2
It according to line is organized in pairs between the two neighboring secondary display pixel of secondary display pixel.As shown in Figure 1, in an embodiment, first
Display data line Sn+1 and third show that data line Sn is disposed between the 1st row and the secondary display pixel of the 2nd row, and do not feel
Signal output line K configuration is surveyed between the 1st row and the secondary display pixel of the 2nd row.Second display data line Sn+2 and the 4th display
Data line Sn+3 is disposed between the 3rd row and the secondary display pixel of the 4th row, and is configured without sensing signal output line K the 3rd
Between capable and the 4th row secondary display pixel.Time of the secondary display pixel (including first time display pixel 106A), the 3rd row of 2nd row
Display pixel (including second of display pixel 106B) and sensing signal output line Kn are in the first display data line Sn+1 and the
Between two display data line Sn+2.First display data line Sn+1 and third show data line Sn in first time display pixel 106A
And between third time display pixel 106C.There is no sensing signal output line K configuration in first time display pixel 106A and third time
Between display pixel 106C.Can the rest may be inferred configuration concept.
It shows scan line Gp, including display scan line Gp_n, display scan line Gp_n+1 etc., may extend away in second direction
On D2, and it is electrically connected the grid of the display switch transistor Tp of time display pixel, can be used to control the unlatching of time display pixel
Timing.Scan line Gs, including sensing scan line Gs_n, sensing scan line Gs_n+1, sensing scan line Gs_n+2 etc. are sensed, it can
Extend in a second direction d 2, and be electrically connected the grid of the sense switch transistor Tw of fingerprint sensing unit 208, can be used to control
The unlatching timing of fingerprint sensing unit 208 processed.Show that scan line Gp and sensing scan line Gs are organized in pairs in secondary display pixel
It is two neighboring between.As shown in Figure 1, display scan line Gp and sensing scan line Gs be organized in pairs in the first direction dl from
Number comes between the secondary display pixel of the 1st column and the 2nd column down on most, or is organized in pairs the secondary display pixel in the 2nd column and the 3rd column
Between, can and so on configuration mode.
In one embodiment, display panel 102 is liquid crystal display panel, and display dress can be assembled into backlight (not shown)
It sets.The sense switch transistor of the display switch transistor Tp of time display pixel of display panel 102, fingerprint sensing unit 208
Tw, sensing signal output line K, display data line S, display scan line Gp, sensing scan line Gs are disposed on closer backlight
On a substrate (such as thin film transistor base plate) for side, colored filter is disposed on carrys out another substrate of backlight side (i.e. farther out
Colored filter substrate) on, liquid crystal layer is folded between above-mentioned two substrates.It can be real according to the display panel 102 of embodiment concept
It is now true to shield interior fingerprint recognition.In an embodiment, secondary display pixel can be by substantial staggered display scan line Gp and display number
It is defined according to line S.In another embodiment, secondary display pixel can also respectively by active component (or display switch transistor Tp) and its
Region where the corresponding pixel electrode (not shown) being electrically connected, which defines, to be come, without to show that data line S and display are scanned
Line Gp definition.The drain electrode of display switch transistor Tp can be electrically connected pixel electrode.
Fig. 2 show the partial circuit schematic diagram of display panel 102.Referring to Fig. 1 and Fig. 2, fingerprint sensing unit
208 include fingerprint sensing unit 2081, fingerprint sensing unit 2082 etc..Fingerprint sensing unit 2081 is electrically connected at sensing signal
Between output line Kn and sensing scan line Gs_n+1.Fingerprint sensing unit 2082 be electrically connected at sensing signal output line Kn+1 and
It senses between scan line Gs_n+2.It can the rest may be inferred other fingerprint sensing units 208.Fingerprint sensing unit 208 (or fingerprint sensing
Unit 2081, fingerprint sensing unit 2082) it may include sense switch transistor Tw, capacitor C, sensing element 207.Sensing element
207 can be touch sensor.The drain electrode of the sense switch transistor Tw of fingerprint sensing unit 2081, capacitor C, sensing element 207
Between have node N1.The capacitor C of fingerprint sensing unit 2081 and sensing element 207 be electrically connected in parallel on node N1 and endpoint Q it
Between.The drain electrode of the sense switch transistor Tw of fingerprint sensing unit 2082, capacitor C, there is node N2 between sensing element 207.
The capacitor C and sensing element 207 of fingerprint sensing unit 2081 are electrically connected in parallel between node N2 and endpoint Q.Can the rest may be inferred its
Its fingerprint sensing unit 208.Sensing signal output line K, including sensing signal output line Kn, sensing signal output line Kn+1 etc.,
It can be electrically connected to integrating circuit 211, integrating circuit 211 can be external integrating circuit.
The signal sequence schematic diagram that the driving method of display panel 102 can refer to Fig. 3 and Fig. 4 in one embodiment understands,
Middle Fig. 3 is time relevant driver' s timing waveform of display pixel, and during Fig. 4 is fingerprint recognition mode, fingerprint sensing unit 208 is related
Driver' s timing waveform.
Referring to figure 3., the driving method of display panel 102 includes providing display scanning signal to display scan line Gp to drive
Dynamic display scan line Gp (such as Fig. 3 show and is provided to display scan line Gp_n, shows that the display scanning of scan line Gp_n+1 is believed
Number), and display data signal is provided (such as Fig. 3 shows and is provided to the first display data line Sn+1, third to display data line S
Show the display data signal of data line Sn), to drive time display pixel and control bright, the dark-state of time display pixel.When aobvious
When showing that switching transistor Tp is open state (channel polarity i.e. below grid is identical to source/drain), display data signal can
Time display pixel is written.In one embodiment, display data signal may include the first display data signal and the second display data letter
Number.First display data signal can be to be provided to the first group display number for being electrically connected white sub-pixel W and green sub-pixel G
It is shown according to the data of line SP1 and shows the display data signal for being provided to the first display data line Sn+1 in signal, such as Fig. 3.The
Two display data signals can be to be provided to the second group display data line for being electrically connected red sub-pixel R and blue sub-pixels B
The data of SP2 show that display is provided to the display data signal that third shows data line Sn in signal, such as Fig. 3.In embodiment,
Controllable display scanning signal and display data signal, (to show image mode and/or non-fingerprint sense during display pattern
During survey/identification touch-control sensing) using time display pixel display image, and time display picture is controlled during fingerprint recognition mode
Bright, the dark-state of element, to show image.In one embodiment, during display pattern, sense switch transistor Tw is maintained at closing
State, display panel 102 be not carried out fingerprint sensing effect.In one embodiment, in fingerprint recognition mode and display pattern phase
Between, display scan line Gp can be driven one by one using display scanning signal during picture cycle (frame).In the display pattern phase
Between, the first display data signal and the second display data signal can maintain an illuminated state voltage (such as white picture grayscale signal).
During fingerprint recognition mode, the first display data signal can have a pulse wave frequency, the pulse wave frequency of the first display data signal
Rate can be greater than the display scan frequency (Fd) of display scanning signal, and the second display data signal can maintain a dark-state voltage
(such as black picture grayscale signal), thus only drive white sub-pixel W and green sub-pixel G wherein at least one for illuminated state, example
Such as, only driving white sub-pixel W is illuminated state (red sub-pixel R, green sub-pixel G and blue sub-pixels B are dark-state at this time),
And display brightness can become therewith；Alternatively, only driving green sub-pixel G is illuminated state (white sub-pixel W, red sub-pixel at this time
R, and blue sub-pixels B is dark-state).
Referring to figure 4., it in an embodiment, is driven during fingerprint recognition mode using the waveform timing of Fig. 4 white time
Pixel W is illuminated state, i.e., the liquid crystal of white sub-pixel W, which topples over orientation, allows light to pass through, therefore the light from backlight
It may pass through the liquid crystal layer of white sub-pixel W, then reflexed to through fingerprint in the fingerprint sensing unit 208 of white sub-pixel W.White
Color sub-pixel W carries out sensing fingerprint recognition during being illuminated state can be obtained excellent fingerprint recognition quality.Also it can pass through the white of illuminated state
The brightness of picture is shown during color sub-pixel W regulation fingerprint recognition.
The signal sequence schematic diagram that the driving method of display panel 102 can refer to Fig. 4 and Fig. 5 in another embodiment understands,
Wherein Fig. 5 is time relevant driver' s timing waveform of display pixel.
In one embodiment, it is bright for driving green sub-pixel G during fingerprint recognition mode using the waveform timing of Fig. 5
State, i.e. the liquid crystal of green sub-pixel G, which topples over orientation, allows light to pass through, therefore the light from backlight may pass through green
The liquid crystal layer of sub-pixel G then passes through the light that green light band is projected in green color filter filtering, and with the light of green light band warp
Fingerprint reflexes in the fingerprint sensing unit 208 of white sub-pixel W.In this embodiment, since the light of green light band is for people
Body blood absorptivity with higher, therefore can be used as the identification of personal characteristics value, reach antifalse effect.
The driving method of display panel 102 includes providing sensing scanning signal to sensing during fingerprint recognition mode and sweeping
Line Gs is retouched to drive sensing scan line Gs and in turn driving fingerprint sensing unit 208, and reads from sensing signal output line K and exports
Fingerprint sensing output signal.Sensing scan line Gs is driven one by one using sensing scanning signal during each frame.Embodiment
In, when (during i.e. integrating circuit 211 is read), integrating circuit 211 is to fingerprint sensing during sense switch transistor Tw is opened
The node (such as node N2 of the node N1 of fingerprint sensing unit 2081, fingerprint sensing unit 2082) of unit 208 is filled with reference
Current potential Vref.Endpoint (such as the endpoint Q of fingerprint sensing unit 2081, the fingerprint sensing unit 2082 of fingerprint sensing unit 208
Endpoint Q) there is level current potential Vb.When sense switch transistor Tw close, sensing element 207 because by finger reflected light irradiate, by
Gradually leak off to level current potential Vb.Potential difference between reference potential Vref and level current potential Vb current potential can be with the fingerprint sensed
Wave crest, trough reflective light intensity and become.In one embodiment, as shown in figure 4, via sensing scan line Gs_n+1 and sense is electrically connected
Survey signal output line Kn the potential difference Δ V1 that senses of fingerprint sensing unit 2081 be the place node N1 reference potential Vref and
Potential difference between level current potential Vb, and via the finger for being electrically connected sensing scan line Gs_n+2 and sensing signal output line Kn+1
The potential difference Δ V2 that line sensing unit 2082 senses is different from Δ V1, i.e. Δ V1 > Δ V2, wherein Δ V1 can indicate fingerprint wave crest
Signal, and Δ V2 can indicate fingerprint trough signal.
The display scanning signal for being provided to display scan line Gp has display scan frequency (Fd).In fingerprint recognition mode
The sensing scanning signal that period is provided to sensing scan line Gs has sensing scan frequency (Fs).Fs/Fd≤1.Alternatively, Fs/
Fd<1.Secondary display pixel has display open region area (Ad), and fingerprint sensing unit 208 has a sensing area area (As).
In one embodiment, fingerprint sensing unit 208 may also include photosensitive element (not shown).It, can benefit when fingerprint sensing unit 208 operates
Light is received with photosensitive element, and passes through the corresponding output fingerprint sensing signal of sense switch transistor Tw.In one embodiment, sensing
Switching transistor Tw is electrically connected between photosensitive element and sensing signal output line K.Photosensitive element and sensing signal output line K
Drain electrode and the source electrode of sense switch transistor Tw is electrically connected.Sensing area area (As) can be photosensitive element and sense switch
The sum total area of transistor Tw.In one embodiment, As/Ad≤1.In one embodiment, 1/4≤As/Ad≤1/3, and 1/2≤Fs/
Fd≤3/4.Such as As/Ad=1/4, and Fs/Fd=1/2.Such as As/Ad=1/3, and Fs/Fd=3/4.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of display panel characterized by comprising
One first time display pixel；
One fingerprint sensing unit configures in the first time display pixel；
One second of display pixel；And
One sensing signal output line is electrically connected the fingerprint sensing unit, and extends in first time display along a first direction
Between pixel and second of display pixel,
Wherein, do not show data line configuration between the first time display pixel and second of display pixel.
2. display panel as described in claim 1, which is characterized in that several pixels including array arrangement, those pixels are each
Including a red sub-pixel, a green sub-pixel, a blue sub-pixels and a white sub-pixel, which further includes one the
One shows data line, and only those white sub-pixels and those green sub-pixels are electrically connected the first display number in those pixels
According to line.
3. display panel as described in claim 1, which is characterized in that further include:
One first display data line is electrically connected the first time display pixel, and extends along the first direction；And
One second display data line is electrically connected second of display pixel, and extends along the first direction,
Wherein the first time display pixel, second of display pixel and the sensing signal output line position are in the first display data
Between line and the second display data line.
4. display panel as described in claim 1, which is characterized in that the first time display pixel is white sub-pixel, and this refers to
Line sensing unit is positioned only in the white sub-pixel.
5. display panel as described in claim 1, which is characterized in that further include:
One third time display pixel, wherein the third time display pixel, the first time display pixel and second of display pixel
It is sequentially configured in a second direction, the first direction difference second direction；And
One third shows data line, is electrically connected the third time display pixel, and wherein the first display data line and the third are aobvious
Show data line between the first time display pixel and the third time display pixel.
6. display panel as claimed in claim 5, which is characterized in that aobvious for the first time at this without the configuration of sensing signal output line
Show between pixel and the third time display pixel.
7. display panel as described in claim 1, which is characterized in that the display panel is liquid crystal display panel, and including number
A secondary display pixel, those secondary display pixels include several white sub-pixels, several red sub-pixels, several green sub-pixels,
Several blue sub-pixels, it is one that wherein those white sub-pixels and those green sub-pixels are interconnected in the first direction
One arrangement sub-pixel group, those red sub-pixels and those blue sub-pixels it is interconnected in the first direction be one second
Arrange sub-pixel group, an odd positions and an even number position of the first order sub-pixel group configuration in a second direction
One of, those second order sub-pixel groups position should in the another of the odd positions and the even number position, the first direction difference
Second direction；
Several fingerprint sensing units, wherein only those white sub-pixels have those fingerprints in those secondary display pixels
Sensing unit configures wherein；
One first group shows data line, extends in the first direction, and be electrically connected the first order sub-pixel group
Those white sub-pixels and those green sub-pixels；
One second group shows data line, extends in the first direction, and be electrically connected the second order sub-pixel group
Those blue sub-pixels and those red sub-pixels, wherein first group show data line a display data line and this second
Group show data line one display data line be organized in pairs those secondary display pixels two neighboring secondary display pixel it
Between；
Several display scan lines, extend in the second direction, and are electrically connected those secondary display pixels；
Several sensing scan lines, extend in the second direction, and are electrically connected those fingerprint sensing units, and wherein those show
One of them of scan line with one of them that those sense scan lines is organized in pairs in the another adjacent of those secondary display pixels
Between two display pixels；And
Several sensing signal output lines, wherein being electrically connected the one of sensing signal output line of those sensing signal output lines
Those fingerprint sensing units be all located at the same side of a sensing signal output line.
8. a kind of driving method of display panel characterized by comprising
During a fingerprint recognition mode, several secondary display pixels are driven using display scan frequency (Fd), and utilize a sense
It surveys scan frequency (Fs) and drives several fingerprint sensing units, wherein Fs/Fd≤1.
9. the driving method of display panel as claimed in claim 8, which is characterized in that during the fingerprint recognition mode, only
It drives white sub-pixel and green sub-pixel at least one of them is illuminated state.
10. the driving method of display panel as claimed in claim 8, which is characterized in that including during a display pattern and
During the fingerprint recognition mode, several display scan lines are driven one by one using a display scanning signal, show data for one first
Signal is provided to the display data line for being electrically connected several white sub-pixels and several green sub-pixels, and one second is shown
Data-signal is provided to another display data line for being electrically connected several red sub-pixels and several blue sub-pixels,
Wherein during the fingerprint recognition mode, is driven one by one using a sensing scanning signal and be electrically connected those fingerprint sensing lists
Several sensing scan lines of member, and the sense switch transistor of those fingerprint sensing units is opened, and in those sense switches crystalline substance
During body pipe is open state, read the fingerprint sensing output signal that exports from a sensing signal output line, wherein this first
The pulse wave frequency of display data signal is greater than the display scan frequency (Fd), which maintains dark-state electricity
Pressure, and only white sub-pixel and green sub-pixel one of them are illuminated state,
During the display pattern, first display data signal and second display data signal maintain an illuminated state voltage.
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| TW108104673A TWI688890B (en) | 2019-02-12 | 2019-02-12 | Display panel and driving method for the same |
| TW108104673 | 2019-02-12 |
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| TWI688890B (en) | 2020-03-21 |
| TW202030586A (en) | 2020-08-16 |
| CN110472615B (en) | 2022-03-04 |
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