TW202030586A - Display panel and driving method for the same - Google Patents

Abstract

A display panel and a driving method for the same are provided. The display panel includes a first sub-display pixel, a fingerprint sensor unit, a second sub-display pixel, and a sensing signal output line. The fingerprint sensor unit is disposed in the first sub-display pixel. The sensing signal output line is electrically connected to the fingerprint sensor unit, and is extended along a first direction between the first sub-display pixel and the second sub-display pixel. No display data line is disposed between the first sub-display pixel and the second sub-display pixel.

Description

Display panel and driving method thereof

The invention relates to a display panel and a driving method thereof.

Fingerprint is the best biometric password and it is unique. As equipment and identification technology become more mature and common, in addition to home protection access control, personal identification, identity authentication in payment systems, or places that require high control access, fingerprint sensing devices are also common in mobile devices in recent years As application identification. The traditional fingerprint sensing device uses the backlight to penetrate the photosensitive element to reach the finger, where the fingerprint of the finger has the reflection of peaks and valleys. The photosensitive element receives the reflected light source and detects the difference between the peak and valley light sources, and then can perform fingerprint sensing.

The invention provides a display panel and a driving method thereof.

According to an embodiment of the present invention, a display panel is provided, which includes a first display pixel, a fingerprint sensing unit, a second display pixel, and a sensing signal output line. The fingerprint sensing unit is configured to display pixels for the first time. The sensing signal output line is electrically connected to the fingerprint sensing unit and extends along the first direction between the first display pixel and the second display pixel. No display data line is arranged between the first display pixel and the second display pixel.

According to another embodiment of the present invention, a method for driving a display panel is provided, which includes driving a number of display pixels using a display scan frequency (Fd) during a fingerprint recognition mode, and driving the number of pixels using a sensing scan frequency (Fs). A fingerprint sensing unit. Fs/Fd£1.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows:

Hereinafter, the present invention will be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the present invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention.

It should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and/or parts, these elements, components, regions, and/or Or part should not be restricted by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Therefore, the “first element”, “component”, “region”, “layer” or “portion” discussed below may be referred to as a second element, component, region, layer or section without departing from the teachings herein.

The terminology used here is only for the purpose of describing specific embodiments and is not limiting. As used herein, unless the content clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms, including "at least one." "Or" means "and/or". As used herein, the term "and/or" includes any and all combinations of one or more of the related listed items. It should also be understood that when used in this specification, the terms "including" and/or "including" designate the presence of the features, regions, wholes, steps, operations, elements, and/or components, but do not exclude one or more The existence or addition of other features, regions as a whole, steps, operations, elements, components, and/or combinations thereof.

As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within the acceptable deviation range of the specific value determined by a person of ordinary skill in the art, taking into account the measurement in question and the A certain amount of measurement-related error (ie, the limitation of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the "about", "approximately" or "substantially" used herein can select a more acceptable range of deviation or standard deviation based on optical properties, etching properties or other properties, instead of using one standard deviation for all properties .

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of related technologies and the present invention, and will not be interpreted as idealized or excessive The formal meaning, unless explicitly defined as such in this article.

The exemplary embodiments are described herein with reference to cross-sectional views that are schematic diagrams of idealized embodiments. Therefore, a change in the shape of the diagram as a result of, for example, manufacturing technology and/or tolerance can be expected. Therefore, the embodiments described herein should not be interpreted as being limited to the specific shape of the area as shown herein, but include, for example, shape deviations caused by manufacturing. For example, areas shown or described as flat may generally have rough and/or non-linear characteristics. In addition, the acute angles shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to show the precise shape of the regions, and are not intended to limit the scope of the claims.

Please refer to FIG. 1, which is a schematic circuit diagram of the display panel 102 according to an embodiment. In the embodiment, the display panel 102 is a liquid crystal display panel, and includes pixels arranged in an array, display data lines S, display scan lines Gp, sensing scan lines Gs, and sensing signal output lines K. The pixels include sub-display pixels of different colors, such as red sub-pixel R, green sub-pixel G, blue sub-pixel B, and/or white sub-pixel W. Take the pixel 104 shown by the dashed frame as an example. The pixel 104 includes the first display pixel 106A as the white sub-pixel W, the second display pixel 106B as the red sub-pixel R, and the blue sub-pixel R. The third display pixel 106C of the color sub-pixel B and the fourth display pixel 106D as the green sub-pixel G. The secondary display pixels include display switching transistors Tp. The pixel may include a fingerprint sensing unit 208, and the fingerprint sensing unit 208 may be configured in the secondary display pixel. In one embodiment, the fingerprint sensing unit 208 is only configured in the white sub-pixel W, and does not affect the optical performance of other color sub-pixels such as red sub-pixel R, green sub-pixel G, and blue sub-pixel B Therefore, the display device can have excellent display quality. The white sub-pixel W can be used to control the brightness of the display screen. The fingerprint sensing unit 208 may include a sensing switch transistor Tw.

The secondary display pixels can be arranged in a matrix. In one embodiment, the white sub-pixels W and the green sub-pixels G are alternately arranged in the first direction D1 as a first arrangement sub-pixel group PG1. The first arrangement sub-pixel group PG1 is arranged at one of the odd and even positions in the second direction D2. Taking the first figure as an example, the first arrangement sub-pixel group PG1 can be moved from The even-numbered row positions counted from left to right, that is, the secondary display pixels arranged in the second row position, the fourth row position, the sixth row position, and the eighth row position. The red sub-pixels R and the blue sub-pixels B are alternately arranged in the first direction D1 to form a second arrangement sub-pixel group PG2. The second permutation sub-pixel group PG2 is located at the other of the odd position and the even-numbered position. Taking the first figure as an example, the second permutation sub-pixel group PG2 can be in the odd row position counting from the left to the right. That is, the secondary display pixels arranged in the first row position, the third row position, the fifth row position, and the seventh row position. The pixel 104 shown in Figure 1 can be arranged as a unit configuration matrix, where the third display pixel 106C (blue sub-pixel B), the first display pixel 106A (white sub-pixel W), and the second The sub-display pixel 106B (red sub-pixel R) and the fourth display pixel 106D (green sub-pixel G) are sequentially arranged in the second direction D2. However, the definition of pixels in this disclosure is not limited to this. The first direction D1 is different from the second direction D2. For example, the first direction D1 may be substantially perpendicular to the second direction D2. In an embodiment, the first direction D1 may be the Y direction, and the second direction D2 may be the X direction. In an embodiment, the first direction D1 may be a row direction, and the second direction D2 may be a column direction.

The sensing signal output line K, including sensing signal output line Kn, sensing signal output line Kn+1, sensing signal output line Kn+2, etc., can be extended in the second direction D2 and electrically connected to fingerprint sensing The unit 208 senses the source of the switching transistor Tw. Taking the sensing signal output line Kn as shown in FIG. 1 as an example, the fingerprint sensing unit 208 electrically connected to the sensing signal output line Kn is located on the same side of the sensing signal output line Kn. The sensing signal output line Kn is arranged between the secondary display pixels in the second row (including the first display pixel 106A) and the third row of the secondary display pixels (including the second display pixel 106B), and there is no The display data line S is arranged between the secondary display pixel in the second row and the secondary display pixel in the third row. The sensing signal output line Kn+1 is arranged between the sub-display pixels in the 4th row and the 5th row, and there is no display data line S arranged in the sub-display pixels in the 4th row and the 5th row The times are displayed between pixels. This configuration concept can be deduced by analogy.

The display data line S may include a first display data line Sn+1, a second display data line Sn+2, a third display data line Sn, a fourth display data line Sn+3, and so on extending in the first direction D1. The display data line S includes a first group display data line SP1 and a second group display data line SP2. The display data lines of the first group display data line SP1 include the first display data line Sn+1, the fourth display data line Sn+3, etc., which are electrically connected to the white sub-pictures of the first-arranged sub-pixel group PG1 The pixel W and the green sub-pixel G show the source of the switching transistor Tp. The display data lines of the second group of display data lines SP2 include the second display data lines Sn+2, the third display data lines Sn, etc., which are electrically connected to the blue sub-pixels of the second array sub-pixel group PG2 B and the red sub-pixel R show the source of the switching transistor Tp. As shown in Figure 1, the first display data line Sn+1 is electrically connected to the first array sub-pixel group PG1 at the second row position, including the first display of the white sub-pixel W in the pixel 104 Pixel 106A. The second display data line Sn+2 is electrically connected to the second arrangement sub-pixel group PG2 at the third row position, and includes the second display pixel 106B as the red sub-pixel R in the pixel 104. The third display data line Sn is electrically connected to the second arrangement sub-pixel group PG2 in the first row position, and includes the third display pixel 106C as the blue sub-pixel B among the pixels 104. The fourth display data line Sn+3 is electrically connected to the first arrangement sub-pixel group PG1 at the fourth row position, and includes the fourth display pixel 106D as the green sub-pixel G in the pixel 104.

A display data line of the first group of display data lines SP1 and a display data line of the second group of display data lines SP2 are arranged in pairs between two adjacent sub-display pixels of the sub-display pixels. As shown in Figure 1, in one embodiment, the first display data line Sn+1 and the third display data line Sn are arranged between the sub-display pixels in the first and second rows, and there is no sensing signal The output line K is arranged between the secondary display pixels in the first row and the second row. The second display data line Sn+2 and the fourth display data line Sn+3 are arranged between the 3rd and 4th rows of the sub-display pixels, and there is no sensing signal output line K arranged on the 3rd and 4th rows. 4 lines of secondary display pixels. The secondary display pixels of the second line (including the first display pixel 106A), the third line of the secondary display pixels (including the second display pixel 106B) and the sensing signal output line Kn are located in the first display data Between the line Sn+1 and the second display data line Sn+2. The first display data line Sn+1 and the third display data line Sn are between the first display pixel 106A and the third display pixel 106C. No sensing signal output line K is arranged between the first display pixel 106A and the third display pixel 106C. The concept of configuration can be deduced by analogy.

The display scan line Gp, including the display scan line Gp_n, the display scan line Gp_n+1, etc., can extend in the second direction D2 and is electrically connected to the gate of the display switching transistor Tp of the secondary display pixel for control This shows the turn-on timing of the pixels. The sensing scan lines Gs, including sensing scan lines Gs_n, sensing scan lines Gs_n+1, sensing scan lines Gs_n+2, etc., can extend in the second direction D2 and are electrically connected to the fingerprint sensing unit 208 The gate of the sensing switch transistor Tw can be used to control the turn-on timing of the fingerprint sensing unit 208. The display scanning line Gp and the sensing scanning line Gs are arranged in a pair between two adjacent sub-display pixels. As shown in Figure 1, the display scanning line Gp and the sensing scanning line Gs are arranged in pairs in the first direction D1 between the first and second rows of display pixels, or form For the secondary display pixels arranged in the second and third columns, the arrangement can be deduced by analogy.

In one embodiment, the display panel 102 is a liquid crystal display panel, which can be assembled with a backlight source (not shown) to form a display device. The display panel 102 secondly displays the display switching transistor Tp of the pixels, the sensing switching transistor Tw of the fingerprint sensing unit 208, the sensing signal output line K, the display data line S, the display scanning line Gp, and the sensing scanning line Gs It is arranged on a substrate closer to the backlight side (such as a thin film transistor substrate), and the color filter is arranged on another substrate (ie, a color filter substrate) on the backlight side, and the liquid crystal layer is sandwiched between Set between the above two substrates. The display panel 102 according to the concept of the embodiment can realize fingerprint recognition in a real screen. In one embodiment, the sub-display pixels can be defined by display scan lines Gp and display data lines S that are substantially interlaced. In another embodiment, the sub-display pixels can also be respectively defined by the area where the active element (or display switching transistor Tp) and its corresponding pixel electrode (not shown) are electrically connected, instead of displaying The data line S and the display scan line Gp are defined. It is shown that the drain of the switching transistor Tp can be electrically connected to the pixel electrode.

FIG. 2 shows a schematic diagram of a part of the circuit of the display panel 102. Please refer to FIG. 1 and FIG. 2 at the same time. The fingerprint sensing unit 208 includes a fingerprint sensing unit 208 ₁ , a fingerprint sensing unit 208 _2, and so on. _2,081 fingerprint sensing unit electrically connected to the sensing signal output lines and sense Kn scan line between Gs_n + 1. _2,082 fingerprint sensing unit electrically connected to the sensing signal output line sense Kn + 1 and the scanning lines between the Gs_n + 2. Other fingerprint sensing units 208 can be deduced by analogy. The fingerprint sensing unit 208 (or fingerprint sensing unit 208 ₁ , fingerprint sensing unit 208 ₂ ) may include a sensing switch transistor Tw, a capacitor C, and a sensing element 207. The sensing element 207 may be a touch sensor. There is a node N1 between the drain of the sensing switch transistor Tw, the capacitor C, and the sensing element 207 of the fingerprint sensing unit 208 ₁ . The capacitor C of the fingerprint sensing unit 208 ₁ and the sensing element 207 are electrically connected in parallel between the node N1 and the terminal Q. There is a node N2 between the drain of the sensing switch transistor Tw, the capacitor C, and the sensing element 207 of the fingerprint sensing unit 208 ₂ . Fingerprint sensing unit sensing element capacitance C 207 is electrically connected in parallel between the node N2 and the node Q in _2081. Other fingerprint sensing units 208 can be deduced by analogy. The sensing signal output line K, including the sensing signal output line Kn, the sensing signal output line Kn+1, etc., can be electrically connected to the integrating circuit 211, and the integrating circuit 211 can be an external integrating circuit.

The driving method of the display panel 102 in an embodiment can be understood with reference to the signal timing diagrams in FIGS. 3 and 4. In which, FIG. 3 is the driving timing waveforms related to the sub-display pixels, and FIG. 4 is the fingerprint recognition mode during the fingerprint identification mode. The driving timing waveforms related to the sensing unit 208.

Referring to FIG. 3, the driving method of the display panel 102 includes providing a display scan signal to the display scan line Gp to drive the display scan line Gp (for example, FIG. 3 shows the display scan provided to the display scan line Gp_n and the display scan line Gp_n+1 Signal), and provide the display data signal to the display data line S (for example, Figure 3 shows the display data signal provided to the first display data line Sn+1 and the third display data line Sn) to drive the secondary display pixels and control Displays the light and dark state of the pixel. When the display switching transistor Tp is in the on state (that is, the polarity of the channel under the gate is the same as the source/drain), the display data signal can be written into the secondary display pixel. In one embodiment, the display data signal may include a first display data signal and a second display data signal. The first display data signal may be the data display signal provided to the first group display data line SP1 electrically connected to the white sub-pixel W and the green sub-pixel G, for example, the display in Figure 3 is provided to the first display data line Sn+1 display data signal. The second display data signal can be the data display signal provided to the second group display data line SP2 that is electrically connected to the red sub-pixel R and the blue sub-pixel B, for example, the third display data shown in Figure 3 Display data signal of line Sn. In an embodiment, the display scan signal and the display data signal can be controlled to display the image using the secondary display pixels during the display mode (ie, display image mode and/or non-fingerprint sensing/recognition touch sensing period). During the recognition mode, the bright and dark states of the secondary display pixels are controlled to display the image. In one embodiment, during the display mode, the sensing switch transistor Tw is maintained in a closed state, and the display panel 102 does not perform fingerprint sensing. In one embodiment, during the fingerprint recognition mode and the display mode, the display scanning signal can be used to drive the display scanning lines Gp one by one during the frame period. During the display mode, the first display data signal and the second display data signal can maintain a bright state voltage (such as a white screen grayscale signal). During the fingerprint recognition mode, the first display data signal can have a pulse frequency, the pulse frequency of the first display data signal can be greater than the display scan frequency (Fd) of the display scan signal, and the second display data signal can be maintained at a Dark state voltage (for example, black screen grayscale signal), so that at least one of the white sub-pixel W and green sub-pixel G is driven to the bright state, for example, only the white sub-pixel W is driven to the bright state (the red The sub-pixel R, the green sub-pixel G, and the blue sub-pixel B are in the dark state), and the display brightness can be changed accordingly; or, only the green sub-pixel G is driven to the bright state (the white sub-pixel The pixel W, the red sub-pixel R, and the blue sub-pixel B are in the dark state).

Please refer to Figure 4. In one embodiment, the waveform timing of Figure 4 can be used to drive the white sub-pixel W to a bright state during the fingerprint recognition mode, that is, the liquid crystal tilting orientation of the white sub-pixel W allows light to pass through it. Therefore, the light from the backlight can pass through the liquid crystal layer of the white sub-pixel W, and then be reflected by the fingerprint to the fingerprint sensing unit 208 of the white sub-pixel W. When the white sub-pixel W is in the bright state, the sensor fingerprint recognition can obtain excellent fingerprint recognition quality. The brightness of the display screen during fingerprint recognition can also be adjusted through the bright white sub-pixel W.

The driving method of the display panel 102 in another embodiment can be understood with reference to the signal timing diagrams in FIGS. 4 and 5, where FIG. 5 is the driving timing waveforms related to the secondary display pixels.

In one embodiment, the waveform timing shown in Figure 5 can be used to drive the green sub-pixel G to a bright state during the fingerprint recognition mode, that is, the liquid crystal tilting orientation of the green sub-pixel G allows light to pass through it, so the light from the backlight It can pass through the liquid crystal layer of the green sub-pixel G, and then pass through the green filter layer to filter out the light in the green wavelength band, and the light in the green wavelength band is reflected by the fingerprint to the fingerprint sensing unit 208 of the white sub-pixel W . In this embodiment, since the light in the green wavelength band has a high absorption rate for human blood, it can be used for identification of personal characteristic values to achieve an anti-counterfeiting effect.

The driving method of the display panel 102 includes providing a sensing scan signal to the sensing scan line Gs during the fingerprint recognition mode to drive the sensing scan line Gs and then drive the fingerprint sensing unit 208, and reading from the sensing signal output line K The output fingerprint sensor output signal. The sensing scan signal is used to drive the sensing scan line Gs one by one during each frame period. In an embodiment, when the sensing switch transistor Tw is turned on (that is, during the reading period of the integration circuit 211), the integration circuit 211 performs a check on the nodes of the fingerprint sensing unit 208 (for example, the node N1 of the fingerprint sensing unit 208 ₁ and the fingerprint sensing the node units ₂₀₈₂ N2) charged to the reference potential Vref. Endpoints 208 (e.g., a fingerprint sensing unit node Q _2081, Q fingerprint sensing unit 208 Endpoint ₂₎ of fingerprint sensing unit having a potential level Vb. When the sensing switch transistor Tw is turned off, the sensing element 207 gradually leaks to the level potential Vb due to the light reflected by the finger. The potential difference between the reference potential Vref and the level potential Vb varies with the intensity of the reflected light of the detected fingerprint peaks and valleys. Potential difference ΔV1 reference potential at the node N1 embodiment, as shown, via electrical connection sensing scanning lines Gs_n + 1 and the sensing signal output line Kn fingerprint sensing unit ₂₀₈₁ senses as a fourth view of an embodiment potential difference between Vref and level potential Vb difference, via the electrical connection sensing scanning lines Gs_n + 2 and the sensing signal output line Kn + fingerprint sensing unit 1 ₂₀₈₂ the sensed potential difference ΔV2 Unlike Delta] V1, i.e., ΔV1>ΔV2, where ΔV1 can represent the fingerprint wave signal, and ΔV2 can represent the fingerprint wave signal.

The display scan signal provided to the display scan line Gp has a display scan frequency (Fd). The sensing scan signal provided to the sensing scan line Gs during the fingerprint recognition mode has a sensing scan frequency (Fs). Fs/Fd£1. Or, Fs/Fd<1. The secondary display pixel has a display opening area (Ad), and the fingerprint sensing unit 208 has a sensing area (As). In an embodiment, the fingerprint sensing unit 208 may further include a photosensitive element (not shown). When the fingerprint sensing unit 208 is in operation, the photosensitive element can receive light, and correspondingly output a fingerprint sensing signal through the sensing switch transistor Tw. In one embodiment, the sensing switch transistor Tw is electrically connected between the photosensitive element and the sensing signal output line K. The photosensitive element and the sensing signal output line K are electrically connected to the drain and source of the sensing switch transistor Tw, respectively. The area of the sensing area (As) may be the combined area of the photosensitive element and the sensing switch transistor Tw. In one embodiment, As/Ad£1. In one embodiment, 1/4£As/Ad£1/3, and 1/2£Fs/Fd£3/4. For example, As/Ad=1/4, and Fs/Fd=1/2. For example, As/Ad=1/3, and Fs/Fd=3/4.

In summary, although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Those who have ordinary knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to those defined by the attached patent application scope.

102: display panel 104: pixel 106A: first display pixel 106B: second display pixel 106C: third display pixel 106D: fourth display pixel 207: sensing elements 208, 208 ₁ , 208 ₂ : Fingerprint sensing unit 211: Integral circuit C: capacitance D1: first direction D2: second direction Gp, Gp_n, Gp_n+1: display scan lines Gs, Gs_n, Gs_n+1, Gs_n+2: sensing scan Lines K, Kn, Kn+1, Kn+2: Sensing signal output lines N1, N2: Node PG1: First-order secondary pixel group PG2: Second-order secondary pixel group Q: End point R: Red Sub-pixel G: Green sub-pixel B: Blue sub-pixel W: White sub-pixel S: Display data line SP1: First group display data line SP2: Second group display data line Sn: Third display Data line Sn+1: first display data line Sn+2: second display data line Sn+3: fourth display data line Tp: display switching transistor Tw: sensing switching transistor Vref: reference potential Vb: level Potential ΔV1, ΔV2: potential difference frame: picture period

FIG. 1 is a schematic circuit diagram of a display panel according to an embodiment. FIG. 2 is a schematic diagram of a partial circuit of the display panel of FIG. 1. FIG. Figure 3 is a timing waveform of driving the secondary display pixels in an embodiment. Figure 4 shows the timing waveforms of driving the fingerprint sensing unit during the fingerprint recognition mode. Figure 5 is a timing waveform of driving the secondary display pixels in another embodiment.

102: display panel

104: Pixel

106A: Display pixels for the first time

106B: Display pixels for the second time

106C: Display pixels for the third time

106D: Display pixels for the fourth time

208, 208 ₁ , 208 ₂ : fingerprint sensor unit

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

PG1: the first pixel group

PG2: second pixel group

R: Red sub-pixel

G: Green sub-pixel

B: Blue subpixel

W: White subpixel

S: Display data line

SP1: The first group display data line

SP2: The second group display data line

Sn: The third display data line

Sn+1: The first display data line

Sn+2: The second display data line

Sn+3: The fourth display data line

Tp: display switching transistor

Tw: sensing switching transistor

Claims (10)

A display panel including: -Display pixels for the first time; A fingerprint sensing unit configured in the first display pixel; Display the pixels a second time; and A sensing signal output line electrically connected to the fingerprint sensing unit and extending along a first direction between the first display pixel and the second display pixel, Wherein, no display data line is arranged between the first display pixel and the second display pixel. For example, the display panel described in item 1 of the scope of patent application includes several pixels arranged in an array, each of which includes a red sub-pixel, a green sub-pixel, a green sub-pixel, and a white sub-pixel. Therefore, the display panel further includes a first display data line, and among the pixels, only the white sub-pixels and the green sub-pixels are electrically connected to the first display data line. The display panel described in item 1 of the scope of patent application includes: A first display data line electrically connected to the first display pixel and extending along the first direction; and A second display data line is electrically connected to the second display pixel and extends along the first direction, The first display pixel, the second display pixel, and the sensing signal output line are located between the first display data line and the second display data line. In the display panel described in item 1 of the scope of patent application, the first display pixel is a white sub-pixel, and the fingerprint sensing unit is only arranged in the white sub-pixel. The display panel described in item 1 of the scope of patent application includes: A third display pixel, wherein the third display pixel, the first display pixel, and the second display pixel are sequentially arranged in a second direction, and the first direction is different from the second Direction; and A third display data line electrically connected to the third display pixel, wherein the first display data line and the third display data line are between the first display pixel and the third display pixel . In the display panel described in item 5 of the scope of patent application, no sensing signal output line is arranged between the first display pixel and the third display pixel. The display panel described in item 1 of the scope of patent application, wherein the display panel is a liquid crystal display panel and includes several secondary display pixels, and the secondary display pixels include several white secondary pixels and several red secondary pixels Pixels, several green sub-pixels, and several blue sub-pixels, wherein the white sub-pixels and the green sub-pixels are alternately arranged in the first direction to form a first arrangement sub-pixel group, The red sub-pixels and the blue sub-pixels are alternately arranged in the first direction into a second arrangement sub-pixel group, and the first arrangement sub-pixel group is arranged in a second direction One of an odd position and an even position, the second arrangement sub-pixel groups are positioned at the other of the odd position and the even position, and the first direction is different from the second direction; A plurality of the fingerprint sensing units, wherein among the sub-display pixels, only the white sub-pixels have the fingerprint sensing units arranged therein; A first group of display data lines extending in the first direction and electrically connected to the white sub-pixels and the green sub-pixels of the first array sub-pixel group; A second group of display data lines extends in the first direction and is electrically connected to the blue sub-pixels and the red sub-pixels of the second arrangement sub-pixel group, wherein the first A display data line of the group display data line and a display data line of the second group display data line are arranged in pairs between two adjacent sub-display pixels of the sub-display pixels; Several display scanning lines extend in the second direction and are electrically connected to the display pixels; Several sensing scan lines extend in the second direction and are electrically connected to the fingerprint sensing units. One of the display scan lines and one of the sensing scan lines are arranged in pairs Between two adjacent sub-display pixels of the sub-display pixels; and A plurality of the sensing signal output lines, wherein the fingerprint sensing units electrically connected to one of the sensing signal output lines are all located on the same side of the one sensing signal output line. A driving method of a display panel includes: During a fingerprint recognition mode, a display scanning frequency (Fd) is used to drive several display pixels, and a sensing scanning frequency (Fs) is used to drive several fingerprint sensing units, where Fs/Fd£1. According to the method for driving the display panel described in claim 8, wherein during the fingerprint recognition mode, only at least one of the white sub-pixel and the green sub-pixel is driven in a bright state. For example, the driving method of the display panel described in item 8 of the scope of patent application includes using a display scan signal to drive several display scan lines one by one during a display mode and during the fingerprint recognition mode, and provide a first display data signal To a display data line that electrically connects several white sub-pixels and several green sub-pixels, and provides a second display data signal to electrically connect several red sub-pixels and several blue sub-pixels Another display data line of During the fingerprint recognition mode, a sensing scan signal is used to drive a plurality of sensing scan lines electrically connected to the fingerprint sensing units one by one, and the sensing switch transistors of the fingerprint sensing units are turned on, and During the period when the sensing switch transistors are in the on state, the fingerprint sensing output signal output from a sensing signal output line is read, wherein the pulse frequency of the first display data signal is greater than the display scanning frequency (Fd) , The second display data signal is maintained at a dark state voltage, and only one of the white sub-pixel and the green sub-pixel is in the bright state, During the display mode, the first display data signal and the second display data signal maintain a bright state voltage.

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