CN212276740U

CN212276740U - Display panel and display device

Info

Publication number: CN212276740U
Application number: CN202021116700.4U
Authority: CN
Inventors: 查国伟; 袁剑峰; 李治福
Original assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-01-01
Anticipated expiration: 2030-06-16

Abstract

The utility model provides a display panel and display device. The display panel includes a plurality of pixel units and functional elements. Each pixel unit comprises a sub-pixel, each sub-pixel comprises a first Micro LED chip, and a gap is formed between every two adjacent first Micro LED chips in a top view angle. The functional element is disposed at the gap. Wherein the function of the functional element is different from the display function of the sub-pixel. By adopting the Micro LED chip with extremely small size as the basic sub-pixel, a certain functional integration area is reserved in the Micro LED sub-pixel space for bearing the functional element. The functional elements comprise a communication antenna, a biological identification unit, an energy storage battery, a storage unit, a logic circuit, a camera, a pressure detection unit and other transmitting and sensing units. The integration level of the display panel is improved, the additional value of the panel is improved, and the space of the whole machine is saved.

Description

Display panel and display device

Technical Field

The utility model relates to a show technical field, especially relate to a display panel and display device.

Background

In a Display panel of the prior art, such as an LCD (Liquid Crystal Display) panel, a plurality of functional elements, such as a fingerprint sensor, are integrated, and usually, a layer of fingerprint sensor is directly stacked on a film layer of the Display panel, which wastes the space design of the Display panel, so that the added value of the Display panel is low.

Disclosure of Invention

The utility model provides a display panel and display device, through the non-display area of rational utilization between the pixel in order to improve display panel's added value.

In order to solve the above problem, the utility model provides a technical scheme as follows:

an embodiment of the present invention provides a display panel, which includes a plurality of pixel units and functional elements. Each pixel unit comprises a sub-pixel, each sub-pixel comprises a first Micro LED chip, and a gap is formed between every two adjacent first Micro LED chips in a top view angle. The functional element is disposed at the gap. Wherein the function of the functional element is different from the display function of the sub-pixel.

The embodiment of the utility model provides an in the display panel that provides, the length and width scope of first Micro LED chip is 1 micron to 100 microns, and the height scope is 1 micron to 20 microns.

The embodiment of the utility model provides an in the display panel, functional element includes one or several kinds of combination in biological identification unit, antenna element, energy storage unit, memory cell, logical unit or the pressure detection unit.

The embodiment of the utility model provides an in the display panel, the biological identification unit includes the fingerprint identification unit, the fingerprint identification unit includes the fingerprint identification sensor, display panel still includes the light path component, the fingerprint identification sensor set up in clearance department, the light path component corresponds the setting and is in the top of fingerprint identification sensor.

The embodiment of the utility model provides an in the display panel that provides, fingerprint identification sensor's area size scope is 10 square microns to 800 square microns.

The embodiment of the utility model provides an in the display panel that provides, fingerprint identification sensor with the spacing distance of first Micro LED chip is 1 micron to 10 microns.

The embodiment of the utility model provides an in the display panel that provides, biological identification unit includes near infrared light sensor and second Micro LED chip, wherein second Micro LED chip is used for launching near infrared light, in order to give near infrared light sensor provides the light source, near infrared light sensor with second Micro LED chip is one to be set up clearance department.

In the display panel provided by the embodiment of the present invention, the functional element includes at least two kinds of sub-functional elements having different functions.

An embodiment of the present invention provides a display panel, wherein the at least two kinds of sub-functional elements are respectively disposed in the same pixel unit.

An embodiment of the present invention provides a display panel, wherein the at least two kinds of sub-functional elements are disposed in the same one in the pixel unit.

In the display panel provided by the embodiment of the present invention, the at least two kinds of sub-functional elements are respectively disposed at different gaps in the pixel unit.

An embodiment of the present invention provides a display panel, wherein the at least two sub-functional elements include a biometric unit and an antenna unit, the biometric unit is disposed on one line in the pixel unit, and the antenna unit is disposed on another line in the pixel unit.

The embodiment of the utility model provides an in the display panel that provides, two at least sub-functional elements still include energy storage unit and memory cell.

The embodiment of the utility model provides an in the display panel, the antenna element distributes in the antenna setting district, the biological identification unit distributes and sets up the district at biological identification, the energy storage unit distributes and sets up the district at the energy storage, the storage unit distributes and sets up the district at the storage, wherein the antenna sets up the district and is located display panel's both sides are regional, the energy storage sets up the district and is located display panel's upper portion is regional, the storage sets up the district and is located display panel's lower part is regional, biological identification sets up the district and is located the energy storage sets up the district with the storage sets up between the district.

The embodiment of the utility model provides an in the display panel, the area that biological identification set up the district accounts for display panel area's ten minutes to third.

An embodiment of the present invention provides a display device, which includes one of the display panels of the foregoing embodiments.

The utility model has the advantages that: the utility model provides an among display panel and display device, through adopting the Micro LED chip of minimum size as basic sub-pixel, thereby certain function integrated area is reserved in the Micro LED sub-pixel space for accept functional element. The functional elements are arranged, so that the integration level of the display panel is improved, the additional value of the display panel is improved, the space of the whole machine is saved, the thickness of the display panel is reduced, the whole screen is more favorably realized, and the user experience is improved.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic bottom view of a display panel structure according to an embodiment of the present invention;

fig. 2 is a schematic view of a light emitting mode of a Micro LED chip according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an integrated fingerprint identification unit of a display unit according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a PIN structure of a fingerprint sensor according to an embodiment of the present invention;

fig. 5 and fig. 6 are schematic diagrams illustrating different arrangement modes of the fingerprint sensor in the pixel unit according to an embodiment of the present invention;

fig. 7 is a schematic view of a palm vein recognition unit integrated with a display unit according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a driving circuit of a near-infrared light sensor according to an embodiment of the present invention;

fig. 9 is a schematic diagram of an integrated antenna unit of a display unit according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a bluetooth antenna according to an embodiment of the present invention;

fig. 11 is a schematic diagram of an integrated energy storage unit of a display unit according to an embodiment of the present invention;

fig. 12 is a schematic diagram of an integrated storage unit of a display unit according to an embodiment of the present invention;

fig. 13 is a schematic diagram of a display unit integrated with a fingerprint identification unit and an antenna unit according to an embodiment of the present invention;

fig. 14 is a first schematic diagram of an integrated energy storage unit and a storage unit of a display unit according to an embodiment of the present invention;

fig. 15 is a second schematic diagram of an integrated energy storage unit and a storage unit of a display unit according to an embodiment of the present invention;

fig. 16 is a schematic distribution diagram of a plurality of functional elements integrated at the same time according to an embodiment of the present invention.

Detailed Description

The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], refer to the directions of the attached drawings only. Accordingly, the directional terms used are used for describing and understanding the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.

In one embodiment, a display panel 100 is provided, as shown in fig. 1, which includes a plurality of pixel units 20 and functional elements 30. Each pixel unit 20 includes a sub-pixel 21, the sub-pixel 21 includes first Micro LED chips 211, and a gap is disposed between two adjacent first Micro LED chips 211 in a top view. The functional element 30 is disposed at the gap. Wherein the function of the functional element 30 is different from the display function of the sub-pixel 21.

Specifically, the display panel 100 further includes a driving backplane 10. Each pixel unit 20 includes three sub-pixels 21, each sub-pixel 21 includes a first Micro LED chip 211, and the first Micro LED chip 211 is bonded on the driving backplane 10. The functional element 30 is disposed on the driving backplane 10, and the functional element 30 is disposed in a gap between two adjacent first Micro LED chips 211, that is, correspondingly disposed in an area of the pixel unit 20 where no first Micro LED chip 211 is disposed.

Specifically, an area where the first Micro LED chip 211 is disposed in each pixel unit 20 is a display area, and an area where the first Micro LED chip 211 is not disposed is a non-display area. That is, the gap between the adjacent first Micro LED chips 211 is the non-display region of the pixel unit 20. The functional element 30 is disposed in a non-display region of at least a part of the pixel unit 20. The functional element 30 includes one or more of a biometric unit, an antenna unit, an energy storage unit, a memory unit, a logic unit, and a pressure detection unit.

Further, each sub-pixel 21 emits light through the first Micro LED chip 211 to provide pixels for display of the display panel, so as to realize the display function of the display panel. The function of the functional element is a non-display function, for example, the functional element is a function of realizing fingerprint identification and the like.

Specifically, the three first Micro LED chips 211 of each pixel unit 20 are three primary color red, green, and blue Micro LED chips, respectively, for displaying on the display panel. Of course, the three first Micro LED chips 211 of each pixel unit 20 may also be same-color Micro LED chips, and cooperate with a quantum dot film or phosphor powder to realize displaying three primary colors.

It should be noted that the pixel unit 20 of the present invention is not limited to RGB (red, green, blue) three-primary color display, and may also be a four-primary pixel such as RGBW (red, green, blue, white). When the RGBW four-element pixel is adopted, each pixel unit comprises four Micro LED chips.

Further, the first Micro LED chip 211 is transferred and bound to the driving backplane 10 by a bulk transfer or the like. The driving backplane 10 includes a driving circuit (not shown) for driving the first Micro LED chips 211. The driving circuit may be implemented by an active array driving technique or a passive array driving technique including an amorphous Silicon (α -Si), Low Temperature Polysilicon (LTPS), Indium Gallium Zinc Oxide (IGZO), and the like.

Further, the first Micro LED chip 211 may be a substrate surface emitting or electrode surface emitting structure, such as the first Micro LED chip structure shown in fig. 2 including a substrate 2111, a light emitting layer 2112 and an electrode layer 2113. As shown in fig. 2 a, an electrode surface exit structure, and in fig. 2 b, a base surface exit structure, and the direction of a dotted line X with an arrow in fig. 2 indicates the exit direction of light.

Further, the first Micro LED chip has a length and a width ranging from 1 micron to 100 microns and a height ranging from 1 micron to 20 microns.

In the present embodiment, at a specific pixel density, the pixel unit of the display panel has enough non-display area for disposing the functional element by using the first Micro LED chip with an extremely small size as the display unit. The integration level of the display panel is improved, the additional value of the display panel is improved, and the space of the whole display panel is saved.

In one embodiment, the functional element is provided as a fingerprint recognition unit in the biometric recognition unit. As shown in fig. 3, the fingerprint recognition unit includes a fingerprint recognition sensor (sensor)311, and the display panel further includes a light path member 312. The fingerprint recognition sensor 311 is disposed in a gap between the adjacent first Micro LED chips 211, and the light path element 312 is disposed above the fingerprint recognition sensor 311. The optical path elements 312 correspond to the fingerprint recognition sensors 311 one to one.

Specifically, the fingerprint recognition sensor 311 may be disposed in the non-display region of a part or all of the pixel units. Or the fingerprint recognition sensor 311 is correspondingly disposed in the non-display region of some or all of the sub-pixels (the non-display region of the sub-pixels refers to a region where the first Micro LED chip is not disposed in the corresponding sub-pixels).

Specifically, the fingerprint sensor is implemented by using a PIN structure such as α -Si, LTPS, OPD (Organic Photo diode), and the like, and the PIN structure of the fingerprint sensor shown in fig. 4 includes a cathode 3111, an electron transport layer 3112, an intrinsic active layer 3113, a hole transport layer 3114, and an anode 3115, which are stacked.

Further, the area size of the fingerprint identification sensor ranges from 10 square micrometers to 800 square micrometers. Specifically, the area size of the fingerprint identification sensor is determined by the photoelectric efficiency, the light path efficiency, the circuit efficiency, the light intensity, the circuit reading precision and the like of the fingerprint identification sensor. The fingerprint sensor is preferably sized to meet the minimum area of bio-integration requirements to reduce the impact on display aperture ratio.

Further, the distance between the fingerprint identification sensor and the first Micro LED chip is 1-10 micrometers. The specific spacing distance between the fingerprint identification sensor and the first Micro LED chip depends on the noise suppression efficiency of a light path.

Further, the fingerprint recognition unit further includes a driving circuit (not shown) for driving the fingerprint recognition sensor 311. The driving circuit of the fingerprint identification sensor 311 is compatible with the backplane driving circuit structure for driving the first Micro LED chip 211.

Further, the driving circuit of the fingerprint sensor 311 may adopt an active or passive array driving method, in which the voltage generated by the photo-generated current is actively used to perform photo-generated voltage amplification on the biological signal, and a 3T (thin film transistor) or 4T driving architecture is generally adopted. The passive driving directly utilizes the integral of photo-generated current generated by a fingerprint identification sensor in a certain time as a biological identification signal, and a 1T or 2T driving framework is generally adopted.

Further, optical principles such as collimating holes and micro lenses (micro lenses) are adopted to realize the one-to-one correspondence between the optical path elements 312 and the fingerprint identification sensors 311.

Further, the light emitted by the first Micro LED chip 211 is reflected by the fingerprint ridges and valleys to form different reflected lights, and the light path element 312 is used to identify the light by the fingerprint identification sensor 311 and form different light and shade images.

Further, the fingerprint sensor 311 and the driving circuit thereof are usually opaque structures, and in order to reduce the influence on the sub-pixel display, the fingerprint sensor 311 is disposed between the sub-pixel row signals, i.e. disposed in the gap between two adjacent rows of sub-pixels. As shown in fig. 5, the fingerprint recognition sensor 311 is disposed in a gap between two adjacent rows of the first Micro LED chips 211. Of course, the display panel may also adopt a mode of sharing a pixel opening region with the fingerprint sensor 311 and the W pixel while realizing the transmittance improvement by adopting a four-element pixel mode such as RGBW, as shown in fig. 6.

In this embodiment, the fingerprint identification unit is integrated in the non-display area of pixel unit, realizes the full screen, when promoting the display panel integrated level, has attenuate the thickness of display panel, has promoted display panel's added value, can realize the fingerprint identification of whole face simultaneously, promotes user's experience.

In one embodiment, the functional element is provided as a palm vein recognition unit in the biometric recognition unit. As shown in fig. 7, the biometric authentication unit includes a near infrared light sensor 313 and a second Micro LED chip 212. The second Micro LED chip 212 is used to emit near infrared light to provide a light source for the near infrared light sensor. The second Micro LED chips 212 and the near infrared light sensor 313 are disposed together in the gap between the adjacent first Micro LED chips 211, and the second Micro LED chips 212 are also bound on the driving backplane 10. Further, the near infrared light sensor 313 and the near infrared light sensor 313 are disposed together in the non-display area within the pixel unit 20, and the near infrared light sensor 313 is disposed in an area where the second Micro LED chip 212 and the first Micro LED chip 211 are not disposed. And particularly, is correspondingly disposed in the pixel unit 20 provided with the second Micro LED chip 212.

Specifically, the size (size) of the second Micro LED chip 212 is smaller than the size (size) of the first Micro LED chip 211.

Specifically, the size (size) of the second Micro LED chip 212 is one-half or one-third or less of the size (size) of the first Micro LED chip 211. The size (size) of the second Micro LED chip 212 is not limited to this, and the size (size) of the second Micro LED chip 212 may be set according to parameters such as the photoelectric efficiency of the near infrared light sensor 313 and the light intensity of the near infrared Micro LED.

Further, as shown in fig. 8, the circuit structure of the near infrared light sensor includes a near infrared photo diode (photo diode) PD, a thin film transistor T1, and a storage capacitor C.

Specifically, the storage capacitor C is used for storing and accumulating the current generated by the exposure of the near-infrared photo-generated current diode PD, and the thin film transistor T1 is used for controlling the zero clearing of the storage capacitor C before the exposure and the reading of the data after the exposure. Of course, the Gate (Gate) line in fig. 8 needs to be connected to the timing control scanning circuit outside the display area, and the readout circuit needs to be connected to the Analog Front End (AFE) circuit outside the display area for integration and filtering.

Further, the driving method of the near infrared light sensor 313 may be a passive array driving method as shown in fig. 8, or may be an active array driving method with stronger driving capability.

It can be understood that, in order to reduce the influence on the sub-pixel display, the arrangement of the near-infrared light sensors may refer to the arrangement of the fingerprint identification sensors in the above embodiments, and details are not repeated herein.

In this embodiment, the palm vein recognition unit is arranged in the non-display area of the pixel unit, and the palm vein recognition unit can realize the safety recognition of the palm vein without arranging an additional near-infrared lamp irradiation device, an optical lens and an additional sensor, thereby improving the integration level of the display panel, increasing the additional value of the display panel and enriching the functions of the display.

It should be noted that the biometric identification unit of the present invention is not limited to fingerprint identification and palm vein identification, and further includes a camera, palm print identification, iris identification, and the like. Where the biometric identification unit functions as ambient light detection or a camera, the sensor may be configured to identify the visible light band. When the fingerprint and palm print detector is used for detecting fingerprints and palm prints, the sensor can be set to identify a visible light wave band or a near infrared light wave band, such as 850 nanometers or 940 nanometers. For ambient uv detection, the sensor may be configured to recognize a uv band of less than 380 nm.

In one embodiment, the functional element is provided as an antenna unit. The antenna unit is disposed in the non-display area of the pixel unit. As shown in fig. 9, the antenna unit 32 is disposed at a region where the first Micro LED chips 211 are not disposed, that is, at a gap between two adjacent first Micro LED chips 211. The antenna unit 32 may be a communication antenna, such as one or a combination of 2G/3G/4G/5G communication antenna, NFC antenna, bluetooth antenna, WIFI antenna, and the like. The antenna unit 32 can realize a large-area array structure by arranging antennas on the whole surface, and the array antenna unit 32, the peripheral radio frequency front end, the transceiver and the baseband chip together form a basic communication unit. The radio frequency front end comprises a radio frequency switch, a radio frequency signal amplifier, a filter, a duplexer and other traditional structures.

Specifically, for example, the communication antenna may be a coplanar waveguide (slot-loop), a slot (slot), a dipole antenna (dipole antenna), or the like.

Specifically, taking the bluetooth antenna as an example, the bluetooth antenna may be designed as a typical inverted F or meander line type antenna. The bluetooth antenna structures shown in fig. 10 each include an antenna TL and a ground GND, where a in fig. 10 is a typical inverted F antenna and b in fig. 10 is a meander antenna. Both the inverted-F antenna and the meander antenna are typically metal antenna structures on the surface of an insulator.

Furthermore, when the antenna unit is designed on the substrate laminated structure, in order to avoid signal interference between the antenna unit and the display pixel unit, the antenna unit needs to be designed to avoid the sub-pixel and the driving circuit thereof, and the safety distance is set according to electromagnetic signal interference specifications.

In this embodiment, the antenna unit is disposed in the non-display region of the pixel unit, so that the integration level of the display panel is improved, and the additional value of the display panel is increased. Traditional antenna sets up in the display screen rear end and receives the electromagnetic shield interference of drive such as display screen demonstration and touch-control line easily simultaneously, the utility model discloses a display element and antenna element adopt coplanar structure can improve the signal shielding difficult problem that the coexistence of many antennas of large capacity communication era caused.

In one embodiment, the functional element is configured as an energy storage unit, and the energy storage unit is disposed in the non-display region of the pixel unit. Specifically, as shown in fig. 11, the energy storage unit 33 is disposed in a region where the first Micro LED chips 211 are not disposed, that is, in a gap between two adjacent first Micro LED chips 211. The energy storage unit 33 may be a capacitive energy storage unit or the like.

Specifically, the capacitive energy storage unit comprises electrode plates and a dielectric layer arranged between the electrode plates. The electrode plate can be a flat capacitor structure formed by a single layer or multiple layers. The material of the dielectric layer includes inorganic materials such as silicon nitride (SiNx) and silicon oxide (SiOx), ceramic materials such as barium titanate and strontium titanate, and metal tantalum.

Furthermore, the capacitive energy storage unit 33 is connected with a peripheral charging circuit through a corresponding circuit, and is charged in the same step when the pixel unit is powered on and in the display state, and different sub-pixels in the pixel unit can be reversely powered through the charge conversion unit 331 after power failure, so that the first Micro LED chip 211 works normally, and therefore the capacitive energy storage unit serves as an energy storage battery with a certain function, and the cruising ability of the display system is improved.

Furthermore, in order to increase the size of the energy storage capacitor of the capacitive energy storage unit and avoid the influence of the capacitive signal on the subpixel driving circuit, the capacitive energy storage unit is arranged in an area outside the subpixel and the driving circuit thereof. And the shape of the energy storage capacitor can be any special-shaped shape so as to maximize the size of the energy storage capacitor.

In the embodiment, the energy storage unit is arranged in the non-display area of the pixel unit, so that the integration level of the display panel is improved, and the additional value of the display panel is improved. And meanwhile, the energy storage unit is arranged to improve the cruising ability of the display system.

In one embodiment, the functional element is provided as a memory cell, and the memory cell is provided in the non-display region of the pixel unit. As shown in fig. 12, the storage unit 34 is disposed at a region where the first Micro LED chips 211 are not disposed, that is, at a gap between adjacent two first Micro LED chips 211.

Specifically, the memory unit 34 is interconnected with a peripheral digital input circuit, which inputs digital storage signals to the memory units in different sub-pixels or pixel units through row and column scanning lines. The digital storage signal sends an instruction execution electrical signal to the current sub-pixel or pixel unit through the DAC conversion circuit 341 and other auxiliary circuits. Thus, the single memory unit 34 can control the single sub-pixel or pixel unit, so that the refresh signal is input to the specific sub-pixel or pixel unit only when the current display pixel needs to be refreshed by additional signal and power consumption.

In this embodiment, the storage unit is disposed in the non-display region of the pixel unit, so that the integration level of the display panel is improved, and the additional value of the display panel is increased. Meanwhile, the memory unit is favorable for reducing the overall logic power consumption, and simultaneously, the complexity of the digital input circuit can be simplified, and the effects of reducing the cost and improving the integration level are realized.

It should be noted that the fingerprint identification unit, the palm vein identification unit, the antenna unit, the energy storage unit, and the storage unit in the above embodiments exemplarily show an integration manner of a part of the functional elements in the display panel, but the present invention is not limited thereto. And fingerprint identification unit, palm vein identification unit, antenna element, energy storage unit and memory cell all can set up in a plurality of pixel units or a plurality of sub-pixel, nevertheless the utility model discloses also not be limited to a functional element integration on display panel. The utility model discloses also can integrate multiple functional element simultaneously on display panel.

In one embodiment, the functional element comprises at least two sub-functional elements that differ in function. The at least two sub-functional elements are respectively arranged at the gaps in different pixel units. The at least two sub-functional elements include a biometric unit and an antenna unit.

Specifically, as shown in fig. 13, the fingerprint sensor 311 of the fingerprint identification unit is disposed in the non-display area of one row of pixel units 20, and the antenna unit 32 is disposed in the non-display area of the other row of pixel units 20'.

Furthermore, in order to reduce the influence of the fingerprint identification sensor and the antenna unit on the sub-pixel display, the fingerprint identification sensor, the antenna unit and the driving circuit of the sub-pixel are in an avoidance design.

In one embodiment, different from the above embodiments, the at least two sub-functional elements are respectively disposed at different gaps within the same pixel unit. And the at least two sub-functional elements comprise an energy storage unit and a storage unit.

Specifically, as shown in fig. 14, the energy storage unit 33 and the storage unit 34 are disposed in the non-display region of the same pixel unit 20, i.e., in the gap between two adjacent rows of the first Micro LED chips 211. Specifically, the energy storage unit 33 and the storage unit 34 are disposed in a region where the first Micro LED chip 211 is not disposed in part or all of the pixel units 20, and the energy storage unit 33 and the storage unit 34 are disposed at an interval from each other.

In an embodiment, different from the above-mentioned embodiments, the at least two sub-functional elements are arranged at the same gap in the same pixel unit. And the at least two sub-functional elements comprise an energy storage unit and a storage unit

Specifically, as shown in fig. 15, the energy storage unit 33 and the storage unit 34 are disposed at the same gap in the same pixel unit 20. I.e. in the non-display area of the same sub-pixel 21. Further, the energy storage unit 33 and the storage unit 34 are jointly disposed at a gap between two adjacent first Micro LED chips.

Specifically, each pixel unit 20 includes three sub-pixels 21, and each sub-pixel 21 includes a first Micro LED chip 211. The energy storage unit 33 and the storage unit 34 are disposed in a region where the first Micro LED chip 211 is not disposed in part or all of the sub-pixels 21.

It should be noted that the above embodiments exemplarily show an integrated combination of some functional elements in the display panel, but the present invention is not limited thereto, and the present invention may also be a combination of other functional elements or a combination of more kinds of functional elements.

In one embodiment, the at least two sub-functional elements include a biometric unit, an antenna unit, an energy storage unit, and a memory unit. The biological identification unit, the antenna unit, the energy storage unit and the storage unit are simultaneously integrated in the interval between different adjacent first Micro LED chips. As shown in fig. 16, the antenna units are disposed in antenna disposition regions 1011, and the antenna disposition regions 1011 are disposed on the left and right sides and the upper side of the display panel 101, so that it is possible to minimize a display opening area and an omni-directional rf signal coverage. The energy storage units are disposed in the energy storage setting region 1012, and the energy storage setting region 1012 is distributed in an upper region of the display panel 101. The memory unit is disposed in the memory setting area 1014, and the memory setting area 1014 is distributed in a space near the lower frame of the display panel 101, so that the conversion circuit signal of the memory unit can be electrically connected with the IC signal in the FPC or COF at the lower frame by the shortest path, thereby achieving the purpose of reducing the wiring impedance. The biometric authentication unit is illustrated as a fingerprint authentication unit, the fingerprint authentication unit is disposed in a fingerprint authentication setting area 1013, the fingerprint authentication setting area 1013 is located in an area between the energy storage setting area 1012 and the storage setting area 1014, for example, the fingerprint authentication setting area 1013 may occupy one tenth to one third of the area of the whole display panel 101. For example, the distance may be one fourth, matching the common location of the finger recognition area and the large area recognition requirement. The energy storage setting area 1012 can occupy a larger area of the display panel 101, so as to meet the requirement of maximizing the energy storage area.

Specifically, when multiple functional devices are integrated in the display panel, in order to ensure that the pixels corresponding to different regions of the integrated functional devices have distinct boundary mura, it is necessary to ensure that the sub-pixels in different regions have the same shape and size or brightness. I.e. the size of the sub-pixels of the different regions depends on the size of the functional element that most affects the aperture ratio. Even if a functional element is not provided in a partial region, the region needs to be provided with sub-pixels of the same size as the region in which the functional element is integrated.

In one embodiment, a display device is provided, which includes the display panel of one of the above embodiments.

According to the above embodiments:

the utility model provides a display panel and display device, display panel include the drive backplate, bind Micro LED chip and functional element on the drive backplate. The functional element is arranged at a gap between two adjacent first Micro LED chips. By adopting the Micro LED chip with extremely small size as the basic sub-pixel, a certain functional integration area is reserved in the Micro LED sub-pixel space for bearing the functional element. The functional elements comprise a communication antenna, a biological identification unit, an energy storage battery, a storage unit, a logic circuit, a camera, a pressure detection unit and other transmitting and sensing units. The functional elements improve the integration level of the display panel, improve the additional value of the display panel, save the space of the whole machine, reduce the thickness of the display panel, facilitate the realization of a full-face screen and improve the user experience. And the functional element makes full use of the space of the display panel, and the accommodating space of the functional element is increased along with the increase of the modularized display area, so that the functional element can be adaptively adjusted according to the display requirement. Meanwhile, sufficient space of the display panel is fully utilized, the limitation that the display panel is suitable for a logic circuit but not suitable for an analog circuit due to overhigh integration level of the traditional silicon semiconductor process is overcome, the display panel and the traditional semiconductor IC respectively exert the advantages of space and integration level, and the complementary advantage effect is achieved.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims

1. A display panel, comprising:

the pixel units comprise sub-pixels, each sub-pixel comprises first Micro LED chips, and gaps are formed between every two adjacent first Micro LED chips in a top view angle; and

a functional element disposed at the gap;

wherein the function of the functional element is different from the display function of the sub-pixel.

2. The display panel of claim 1, wherein the first Micro LED chip has a length and a width in a range of 1 to 100 micrometers and a height in a range of 1 to 20 micrometers.

3. The display panel according to claim 1, wherein the functional element comprises one or more of a biometric unit, an antenna unit, an energy storage unit, a logic unit and a pressure detection unit.

4. The display panel according to claim 3, wherein the biometric unit comprises a fingerprint recognition unit, the fingerprint recognition unit comprises a fingerprint recognition sensor, the display panel further comprises a light path element, the fingerprint recognition sensor is disposed at the gap, and the light path element is correspondingly disposed above the fingerprint recognition sensor.

5. The display panel of claim 4, wherein the fingerprint sensor has an area size ranging from 10 square microns to 800 square microns.

6. The display panel of claim 4, wherein the fingerprint sensor is spaced from the first Micro LED chip by a distance of 1 to 10 microns.

7. The display panel of claim 3, wherein the biometric unit comprises a near infrared light sensor and a second Micro LED chip, wherein the second Micro LED chip is configured to emit near infrared light to provide a light source for the near infrared light sensor, and the near infrared light sensor and the second Micro LED chip are disposed together at the gap.

8. The display panel according to claim 1, wherein the functional element includes at least two kinds of sub-functional elements having different functions.

9. The display panel according to claim 8, wherein the at least two kinds of sub-functional elements are respectively disposed at different gaps within the same pixel unit.

10. The display panel according to claim 8, wherein the at least two kinds of sub-functional elements are disposed at the same gap in the same pixel unit.

11. The display panel according to claim 8, wherein the at least two kinds of sub-functional elements are respectively disposed at the gaps within the different pixel units.

12. The display panel of claim 11, wherein the at least two sub-functional elements comprise a biometric unit and an antenna unit, wherein the biometric unit is disposed at the gap in one row of the pixel units and the antenna unit is disposed at the gap in another row of the pixel units.

13. The display panel of claim 12 wherein the at least two sub-functional elements further comprise an energy storage unit and a memory unit.

14. The display panel according to claim 13, wherein the antenna units are distributed in an antenna configuration area, the biometric identification units are distributed in a biometric identification configuration area, the energy storage units are distributed in an energy storage configuration area, and the storage units are distributed in a storage configuration area, wherein the antenna configuration area is located in two side areas of the display panel, the energy storage configuration area is located in an upper area of the display panel, the storage configuration area is located in a lower area of the display panel, and the biometric identification configuration area is located between the energy storage configuration area and the storage configuration area.

15. The display panel according to claim 14, wherein the area of the biometric setting area occupies one tenth to one third of the area of the display panel.

16. A display device characterized by comprising the display panel according to any one of claims 1 to 15.