Display panel, display screen and terminal

Abstract

The present disclosure relates to a display panel, a display screen and a terminal. The display panel of the present disclosure has a sensing area corresponding to an optical fingerprint component, comprising: a light-emitting layer, the light-emitting layer comprising a plurality of light-emitting devices for emitting light; and a driving layer arranged below the light-emitting layer, comprising a plurality of driving devices connected with the plurality of light-emitting devices, the area of the driving layer occupied by the plurality of driving devices being a non-light-transmitting area, and the area of the driving layer other than the non-light-transmitting area being a light-transmitting area; wherein the plurality of driving devices are arranged such that the area ratio of the light-transmitting area in the sensing area is higher than the area ratio of the light-transmitting area in a non-sensing area, and the non-sensing area is an area on the display panel other than the sensing area. The display panel of the present disclosure has a high light transmittance of the driving layer.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more particularly to a display panel, display screen, and terminal. Background Technology

[0002] With the increasing application scenarios of electronic devices, users' performance requirements for electronic product displays are becoming more diversified. To meet these needs, more and more electronic products are being equipped with displays featuring fingerprint recognition functionality. Related technologies for fingerprint recognition on displays can employ capacitive, optical, or ultrasonic fingerprint recognition methods.

[0003] In optical fingerprint recognition, when a user presses their finger on the screen, the display emits light to illuminate the area where the finger is. The reflected light illuminating the fingerprint passes through the gaps between the screen pixels and returns to the sensor located under the display. The resulting image is then compared and analyzed with images stored in the database for identification.

[0004] In order to clearly identify fingerprint images, the reflected light needs to have a certain brightness, which can usually be achieved by increasing the brightness of the emitted light or increasing the brightness of the reflected light. Summary of the Invention

[0005] To overcome the problems existing in related technologies, this disclosure provides a display panel, a display screen, and a terminal.

[0006] According to a first aspect of the present disclosure, a display panel is provided, wherein an optical sensing device is disposed below the display panel, the display panel comprising: a light-emitting layer including a plurality of light-emitting devices for emitting light; and a driving layer disposed below the light-emitting layer, including a plurality of driving devices connected to the plurality of light-emitting devices, wherein the area of ​​the driving layer occupied by the plurality of driving devices is a non-transparent area, and the area outside the non-transparent area in the driving layer is a transparent area; wherein the plurality of driving devices are arranged such that the area ratio of the transparent area in the sensing area is higher than the area ratio of the transparent area in the non-sensing area, and the non-sensing area is the area outside the sensing area on the display panel.

[0007] In one embodiment, the driving device and the light-emitting device are electrically connected via a transparent metal.

[0008] In one embodiment, within the sensing area, one of the driving devices is electrically connected to a plurality of the light-emitting devices.

[0009] In one embodiment, some or all of the driving devices corresponding to the light-emitting devices within the sensing area are disposed in the non-sensing area.

[0010] In one embodiment, the driving device corresponding to the portion of the light-emitting device that emits light of the same color within the sensing area is disposed in the non-sensing area.

[0011] In one embodiment, some of the driving devices within the sensing area are arranged close to each other or at least partially overlap each other vertically.

[0012] In one embodiment, the plurality of light-emitting devices corresponding to a pixel unit are respectively connected to a plurality of driving devices arranged close to each other or at least partially overlapping vertically.

[0013] In one embodiment, the driving devices corresponding to the light-emitting devices emitting the same color light within the sensing area are arranged close to each other or at least partially overlap vertically.

[0014] According to a second aspect of the present disclosure, a display screen is provided, including a display panel as described in any of the preceding claims; and an optical sensing device disposed below the display panel, corresponding to the sensing area.

[0015] According to a third aspect of the present disclosure, a terminal is provided, including a display screen as described in any of the foregoing claims.

[0016] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: By arranging multiple driving devices such that the proportion of the light-transmitting area in the sensing area is higher than that in the non-sensing area, this arrangement allows more light emitted from the display screen's light-emitting layer to pass through the driving layer after being reflected, thus increasing the brightness of the reflected light and reducing the degree of obstruction of the reflected light by the driving devices, thereby increasing the accuracy of fingerprint recognition.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0019] Figure 1 This is a schematic diagram of the structure of a display panel according to an exemplary embodiment.

[0020] Figure 2 This is a schematic diagram illustrating a drive device arrangement structure in a non-sensing area according to an exemplary embodiment.

[0021] Figure 3This is a schematic diagram illustrating the arrangement of driving devices within a sensing area according to an exemplary embodiment.

[0022] Figure 4 This is a schematic diagram illustrating the arrangement of driving devices within a sensing area according to another exemplary embodiment.

[0023] Figure 5 This is a schematic diagram illustrating the arrangement of driving devices within a sensing area according to another exemplary embodiment. Detailed Implementation

[0024] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0025] More and more terminal devices are adopting fingerprint-recognition displays to meet users' needs for operating the devices with both hands. Among the fingerprint recognition methods used for displays, optical fingerprint recognition is a commonly used approach.

[0026] In optical fingerprint recognition, light emitted from the display screen is reflected when it encounters a relevant object. The reflected light then passes through the display screen to reach the sensing component. Since the surface of the relevant object, such as a finger, is uneven, the brightness of the reflected light varies. The sensing component draws a pattern of the relevant object, such as a fingerprint, by sensing the reflected light, and then compares it with a pre-stored image for identification.

[0027] Displays capable of incorporating optical fingerprint recognition are typically OLED (Organic Light-Emitting Diode) displays. OLED display technology differs from traditional LCD displays; it requires no backlight and uses a very thin coating of organic material and a glass substrate, or a flexible organic substrate. When an electric current passes through, these organic materials emit light. Utilizing the self-emissive nature of OLED displays, optical fingerprint recognition can be implemented without the need for separate light-emitting devices, thus fulfilling fingerprint recognition functionality without increasing the display's thickness.

[0028] Furthermore, OLED displays can be made lighter and thinner than traditional LCD screens, offer wider viewing angles, and significantly reduce power consumption. In the increasingly competitive terminal device market, improvements in any aspect such as size, thickness, viewing angle, and standby time can enhance a product's competitiveness. Therefore, OLED displays are widely used in terminal devices.

[0029] In optical fingerprint recognition, a clearer image of the reflected light from the fingerprint sensor leads to more accurate identification. Generally, this can be achieved by increasing the brightness of the fingerprint area on the display. For example, some technologies combine hardware and software: when the device is in a black-screen state, the power management service can pre-light the display to acquire a fingerprint image. The acquired fingerprint image is then compared with the registered fingerprint; if recognition fails, the display brightness is further increased, and this process is repeated. However, this setup requires a larger current supply to the display, significantly increasing the device's power consumption. Furthermore, it necessitates software coordination, increasing manufacturing complexity and hindering product competitiveness.

[0030] To address the aforementioned technical issues, this disclosure provides a display panel that can increase the light transmittance of the display driving layer, thereby increasing the light transmittance of the display screen, so as to increase the brightness of the reflected light and enable clear fingerprint recognition.

[0031] Figure 1 This is a schematic diagram illustrating the structure of a display panel according to an exemplary embodiment. (See also...) Figure 1 The display panel disclosed herein includes a light-emitting layer 100 and a driving layer 200. The light-emitting layer 100 has a first surface 101 and a second surface 102 disposed opposite to each other. The first surface 101 of the light-emitting layer 100 is the outer surface of the display panel 20. A cover plate 30 can be disposed above the first surface 101 of the light-emitting layer 100 to provide protection for the display screen. The second surface 102 of the light-emitting layer 100 is disposed inside the display panel 20 opposite to the first surface 101. The driving layer 200 is disposed below the light-emitting layer 100 and is in contact with the light-emitting layer 100. The driving layer 200 is used to drive the light-emitting layer 100 to emit light 103.

[0032] In this embodiment, the display panel 20 can be an AMOLED display (Active-matrix organic light-emitting diode). An AMOLED display is a type of OLED display that utilizes organic semiconductor materials and light-emitting materials to emit light through carrier injection and recombination under an electric field. By using an ITO transparent electrode and a metal electrode as the anode and cathode of the device, respectively, electrons and holes are injected from the cathode and anode into the electron and hole transport layers under a certain voltage. The electrons and holes migrate through the electron and hole transport layers to the light-emitting layer, where they meet to form excitons and excite the light-emitting molecules, which then emit visible light through radiative relaxation. In other words, an AMOLED display is a self-emissive display and does not require a backlight module. AMOLED screens are very thin and can integrate a touch layer, making them advantageous for ultra-thin devices. They also possess a degree of flexibility, allowing for the creation of flexible screens. In addition, because AMOLED is self-emissive, individual pixels do not work when displaying black and consume low power when displaying dark colors. Therefore, AMOLED saves power in dark colors, has a contrast ratio of hundreds of times that of traditional LCD screens, and does not leak light.

[0033] In this embodiment of the disclosure, the light-emitting layer 100 includes a plurality of light-emitting devices 110, which are used to emit emitted light 103. The light-emitting devices 110 may be pixels, and the plurality of light-emitting devices 110 may include organic light-emitting diodes (OLEDs) or active matrix organic light-emitting diodes (AMIDs) of different colors. The emitted light 103 emitted by the plurality of light-emitting devices 110 diverges outward from the terminal and is reflected when it encounters a relevant object, such as a finger.

[0034] In this embodiment, the driving layer 200 includes multiple driving devices 201 connected to the light-emitting devices 110. Each driving device 201 may be a driving chip. The driving devices 201 are opaque, and the area of ​​the driving layer 200 occupied by the multiple driving devices 201 is an opaque area. Therefore, within the driving layer 200, the area outside the opaque area is the translucent area. Light cannot pass through the opaque area but can pass through the translucent area. In this embodiment, the multiple driving devices 201 are electrically connected to the multiple light-emitting devices 110 in a one-to-one correspondence. However, this disclosure is not limited to this; multiple driving devices 201 may be electrically connected to a single light-emitting device 110, or a single driving device 201 may be electrically connected to multiple light-emitting devices 110.

[0035] like Figure 1As shown, in the embodiments of this disclosure, an optical sensor 30 is disposed below the display panel 20. The optical sensor 30 of this disclosure can be a device capable of sensing light energy from ultraviolet to infrared light and converting that light energy into an electrical signal. The light signal that the optical sensor 30 of this disclosure can recognize can be visible light or invisible light. For example, when the light signal is visible light, the optical sensor 30 will generate a photoelectric effect when it senses the visible light.

[0036] In this embodiment, it is not necessary to provide photoelectric sensors 40 over the entire display panel 20; they can be provided only in the area where fingerprint recognition is required. On the display panel 20, the position corresponding to the optical sensor 30 is the sensing area, and the remaining positions are non-sensing areas.

[0037] In this embodiment, the light-emitting layer 100 emits light rays 103, which diffuse towards the display panel 20. When the emitted light rays 103 encounter an object such as a finger, they are reflected. The reflected light rays 104 are emitted from the outside of the display panel 20 into the inside of the display panel 20, passing sequentially through the cover plate 30, the light-emitting layer 100, the driving layer 200, and then reaching the photoelectric sensor 40. The photoelectric sensor 40 senses the reflected light rays 104, converts the light signal into an electrical signal through the photoelectric effect, and then draws a fingerprint image. The fingerprint image is then compared with the registered image in the terminal for identification.

[0038] In this embodiment, the cover plate 30 and the light-emitting layer 100 along the light path of the reflected light 104 have high light transmittance, while the driving layer 200 has very low transmittance because the driving device 201 is an opaque device. In some related technologies, if an AMOLED display is used, for example, if the brightness of the emitted light from the light-emitting layer of the display is 800 nits, the brightness of the reflected light reaching the optical sensor after reflection is only 32 nits, meaning the transmittance of the display is approximately 4%. If the transmittance of the display is too low, resulting in insufficient light reflected, it will affect the fingerprint recognition accuracy.

[0039] In this embodiment of the present disclosure, the plurality of driving devices 201 in the driving layer 200 can be arranged such that the proportion of the light-transmitting area within the sensing area is higher than the proportion of the light-transmitting area within the non-sensing area. That is, the light-transmitting area within the sensing area is increased, which in turn increases the light transmittance of the driving layer 200.

[0040] In this embodiment, within the sensing area, one driving device 201 can be electrically connected to multiple light-emitting devices 110. The driving device 201 can drive the light-emitting devices 110 and transmit signals and data to them. Connecting one driving device 201 to multiple light-emitting devices 110, compared to a one-to-one connection between each driving device 201 and each corresponding light-emitting device 110, reduces the area occupied by the driving device 201 in the sensing area, thus increasing the light-transmitting area within the sensing area and consequently increasing the light transmittance of the display panel 20. In this embodiment, each driving device 201 can be electrically connected to a light-emitting device 110 within the sensing area to maximize light transmittance. Alternatively, some driving devices 201 can be connected to multiple light-emitting devices 110, while others can be connected one-to-one with corresponding light-emitting devices 110 within the sensing area. This disclosure does not impose specific limitations; any method that achieves the desired purpose is acceptable.

[0041] Figure 2 This is a schematic diagram illustrating an arrangement of driving devices in a non-sensing area according to an exemplary embodiment. (See also...) Figure 2 Since the non-sensing area of ​​the display panel 20 does not perform fingerprint recognition and is not equipped with an optical sensor 40, multiple driving devices 201 can be arranged in a commonly used configuration. That is, each driving device 201 is placed vertically overlapping each corresponding connected light-emitting device 110, meaning each driving device 201 is positioned below the connected light-emitting device 110. The multiple driving devices 201 can be evenly distributed within the non-sensing area. However, this disclosure is not limited to this; the multiple driving devices 201 can be arranged arbitrarily within the non-sensing area, as long as the purpose is achieved.

[0042] Figure 3 This is a schematic diagram illustrating the arrangement of driving devices within a sensing area according to an exemplary embodiment. (See also...) Figure 3 In the display panel 20 of this disclosure, some of the light-emitting devices 110 corresponding to the driving devices 201 within the sensing area are disposed in the non-sensing area. That is, some of the driving devices 201 are moved out of the sensing area, thereby reducing the number of driving devices 201 within the sensing area, thereby increasing the area of ​​the light-transmitting area within the sensing area, that is, increasing the light transmittance of the driving layer 200, and thus making the proportion of the light-transmitting area within the sensing area higher than the proportion of the light-transmitting area within the non-sensing area.

[0043] In the embodiments disclosed herein, such as Figure 3As shown, multiple driving devices 201 are electrically connected to multiple light-emitting devices 110 in a one-to-one correspondence, and each driving device 201 and each light-emitting device 110 can be connected through a transparent metal 50. The transparent metal 50 is light-transmitting and will not affect the light transmittance of the driving layer 200.

[0044] In this embodiment, since the driving device 201 is electrically connected to the light-emitting device 110, the arrangement of the multiple driving devices 201 needs to consider the connection lines between the multiple driving devices 201 and the multiple light-emitting devices 110, and the arrangement method that has the least impact on the connection lines should be selected as much as possible. For example, some of the driving devices 201 near the outside of the sensing area can be moved to the non-sensing area. This arrangement has the least impact on the connection lines between the multiple driving devices 201 and the multiple light-emitting devices 110, and while improving the light transmittance of the sensing area, it can also ensure the stability of the internal connection lines of the display panel 20.

[0045] In this embodiment of the present disclosure, the arrangement of some of the driving devices 201 in the sensing area of ​​the driving layer 200 is such that the proportion of the light-transmitting area in the sensing area is higher than that in the non-sensing area. That is, increasing the area of ​​the light-transmitting area in the sensing area, which in turn increases the light transmittance of the driving layer 200.

[0046] In this embodiment, multiple light-emitting devices 110 can be configured to emit light of different colors, such as blue, green, and red. The driving devices 201 corresponding to some of the light-emitting devices 110 emitting the same color of light within the sensing area can be placed in a non-sensing area. Within the sensing area, the light-emitting devices 110 emitting the same color of light can generally be arranged in a column or a row. Placing the driving devices 201 corresponding to some of the light-emitting devices 110 emitting the same color of light in the non-sensing area simplifies the process setup during manufacturing and reduces the complexity of the process.

[0047] In this embodiment, the light-emitting layer 100 emits light rays 103, which diffuse towards the display panel 20. When the emitted light rays 103 encounter an object such as a finger, they are reflected. The reflected light rays 104 are emitted from the outside of the display panel 20 into the inside, passing sequentially through the cover plate 30, the light-emitting layer 100, the driving layer 200, and finally reaching the photoelectric sensor 40. When the reflected light rays 104 pass through the driving layer, the light transmittance in the sensing area increases due to the reduction in the number of driving devices 201 within the sensing area. This increases the number of reflected light rays 104 passing through the sensing area, resulting in increased brightness. In other words, the light transmittance of the display panel 20 in this embodiment is increased, and the amount of light reflected by the reflected light rays 104 is sufficient. When used for fingerprint recognition, this provides a fingerprint image with high visibility, thereby improving the comparison rate with the registered fingerprint image and enhancing the user experience.

[0048] When the display panel of this embodiment is used for fingerprint recognition in a dark environment, compared to related technologies that require higher brightness for fingerprint recognition, this embodiment only requires lower brightness to complete the fingerprint recognition function. That is, this embodiment reduces the power demand of the display screen, thereby increasing battery life, improving the terminal's standby time, and enhancing its competitiveness.

[0049] When this embodiment of the present disclosure is applied to a terminal with fingerprint recognition functionality, because the sensing area of ​​the driving layer 200 in this embodiment has high light transmittance, the brightness of the emitted light 103 emitted by the light-emitting layer 100 of the display panel 20 can be reduced accordingly, thus achieving the purpose of fingerprint recognition. For example, if the original setup requires the light-emitting layer to emit emitted light with a brightness of 800 nits to achieve fingerprint recognition, the display panel 20 in this embodiment, due to the increased light transmittance of the sensing area of ​​the driving layer 200, can achieve fingerprint recognition with only emitted light of 600 nits brightness. This reduces the power consumption of the display panel 20 and increases battery life.

[0050] Figure 4 This is a schematic diagram illustrating the arrangement of driving devices within a sensing area according to another exemplary embodiment. (See also...) Figure 4 In the display panel 20 of this disclosure, all the driving devices 201 corresponding to the light-emitting devices 110 in the sensing area are disposed in the non-sensing area. That is, all the driving devices 201 are moved out of the sensing area, so that no driving devices 201 are disposed in the sensing area, thereby greatly increasing the light-transmitting area in the sensing area, that is, greatly increasing the light transmittance of the driving layer 200, and thus making the proportion of the light-transmitting area in the sensing area higher than that in the non-sensing area.

[0051] In the embodiments disclosed herein, such as Figure 4 As shown, multiple driving devices 201 are electrically connected to multiple light-emitting devices 110 in a one-to-one correspondence, and each driving device 201 and each light-emitting device 110 can be connected through a transparent metal 50. The transparent metal 50 is light-transmitting and will not affect the light transmittance of the driving layer 200.

[0052] In this embodiment, since the driving device 201 is electrically connected to the light-emitting device 110, the arrangement of the multiple driving devices 201 needs to consider the connection lines between the multiple driving devices 201 and the multiple light-emitting devices 110, and the arrangement method that has the least impact on the connection lines should be selected as much as possible. For example, all the driving devices 201 can be placed in the non-sensing area around the sensing area. This arrangement can minimize the length of the transparent metal 50 between the driving devices 201 and the light-emitting devices 110, which not only reduces manufacturing costs, but also minimizes the impact on the connection lines between the multiple driving devices 201 and the multiple light-emitting devices 110. While improving the light transmittance of the sensing area, it can also ensure the stability of the internal connection lines of the display panel 20.

[0053] In this embodiment of the present disclosure, the arrangement of some of the driving devices 201 in the sensing area of ​​the driving layer 200 is such that the proportion of the light-transmitting area in the sensing area is higher than that in the non-sensing area. That is, increasing the area of ​​the light-transmitting area in the sensing area, which in turn increases the light transmittance of the driving layer 200.

[0054] In this embodiment, the light-emitting layer 100 emits light rays 103, which diffuse towards the display panel 20. When the emitted light rays 103 encounter an object such as a finger, they are reflected. The reflected light rays 104 are emitted from the outside of the display panel 20 into the inside, passing sequentially through the cover plate 30, the light-emitting layer 100, the driving layer 200, and finally reaching the photoelectric sensor 40. When the reflected light rays 104 pass through the driving layer, since there is no driving device 201 in the sensing area, the light transmittance in the sensing area is greatly increased, and the number of reflected light rays 104 passing through the sensing area is significantly increased, resulting in a significant increase in brightness. That is, the light transmittance of the display panel 20 in this embodiment is greatly increased, and the amount of light from the reflected light rays 104 is sufficient. When used for fingerprint recognition, it can provide a fingerprint image with high visibility, thereby improving the comparison rate with the registered fingerprint image and enhancing the user experience.

[0055] When the display panel of this embodiment is used for fingerprint recognition in a dark environment, compared to related technologies that require higher brightness for fingerprint recognition, this embodiment only requires lower brightness to complete the fingerprint recognition function. That is, this embodiment reduces the power demand of the display screen, thereby increasing battery life, improving standby time, and enhancing competitiveness. For example, when used in smaller terminals such as wearable devices, where the battery is small and has lower power supply capacity, this design significantly reduces the power consumption of the display panel 20, greatly improving the product's competitiveness.

[0056] When this embodiment of the present disclosure is applied to a terminal with fingerprint recognition functionality, because the light transmittance of the sensing area of ​​the driving layer 200 in this embodiment of the present disclosure is significantly improved, the brightness of the emitted light 103 emitted by the light-emitting layer 100 of the display panel 20 can be correspondingly and significantly reduced, thereby achieving the purpose of fingerprint recognition. For example, if the original setup requires the light-emitting layer to emit emitted light with a brightness of 800 nits to achieve the purpose of fingerprint recognition, the display panel 20 in this embodiment of the present disclosure, due to the improved light transmittance of the sensing area of ​​the driving layer 200, can achieve the purpose of fingerprint recognition with only 200 nits or even lower brightness emitted light. This reduces the power consumption of the display panel 20 and increases battery life.

[0057] Figure 5 This is a schematic diagram illustrating the arrangement of driving devices within a sensing area according to an exemplary embodiment. (See also...) Figure 5 Within the sensing area, some driving devices 201 are arranged close to each other or at least partially overlap vertically. The driving device 201 can be a driving chip. To perform the functions of the driving device 201, various lines, such as wires or other lines, can be arranged around it. Embodiments of this disclosure can modify the wiring around the driving device 201. For example, the wiring around a single driving device 201 can be arranged more densely, reducing the area occupied by the wiring around a single driving device 201. Alternatively, the wiring around a single driving device 201 can be arranged at the edge of the driving device 201, leaving the other end of the edge empty. This allows for staggered wiring of multiple driving devices 201, making the arrangement of multiple driving devices 201 more compact, forming a close-knit state. In some embodiments, the wiring of multiple driving devices 201 can also be integrated, thereby reducing the wiring area of ​​multiple driving devices 201 and allowing them to form a more compact arrangement. By arranging multiple driving devices 201 close to each other, the number of driving devices 201 in the sensing area is reduced, but the area occupied by the wiring of the driving devices 201 is reduced. Since both the driving devices 201 and their wiring are opaque, this arrangement reduces the area of ​​the opaque area in the sensing area, thereby increasing the area of ​​the transparent area in the sensing area, which in turn increases the light transmittance of the driving layer 200. Consequently, the proportion of the transparent area in the sensing area is higher than that in the non-sensing area.

[0058] In this embodiment, for example, the wiring around two actuators 201 can be arranged to intersect or fit together to achieve the purpose of the two actuators 201 being close to each other. Correspondingly, the same wiring method can be used to make three, four, or more actuators 201 close to each other. It should be noted that this embodiment does not specifically limit the number of actuators 201 that are set to be close to each other; any number of actuators 201 can be close to each other. For example, within the sensing area, several pairs of actuators 201 can be set to be close to each other, and several pairs of actuators 201 can be set to be close to each other, as long as the purpose is achieved.

[0059] In this embodiment, the multiple light-emitting devices 110 can be configured to emit light of different colors, such as blue, green, and red. The light-emitting layer can include multiple pixel units, and each pixel unit can include multiple light-emitting devices 110 emitting different colors. In this embodiment, multiple driving devices 201 connected to the corresponding multiple light-emitting devices 110 within a pixel unit can be arranged close together. During the display process of the display panel, the control unit controls the multiple pixel units to achieve changes in the displayed image. This arrangement of pixel units not only increases the area of ​​the light-transmitting region within the sensing area but also facilitates the wiring design of the driving devices 201 connected to the light-emitting devices 110 within a pixel. For example, some lines can be shared or integrated, saving production materials and reducing production difficulty.

[0060] In this embodiment, the driving devices 201 corresponding to the light-emitting devices 110 emitting the same color light within the sensing area can also be arranged close together. Within the sensing area, the light-emitting devices 110 emitting the same color light can generally be arranged in a column or row. Arranging the driving devices 201 corresponding to the light-emitting devices 110 emitting the same color light close together allows for a compact arrangement of the driving devices 201 corresponding to multiple adjacent or nearby light-emitting devices 110. This arrangement is easier to operate and reduces production difficulty.

[0061] In this embodiment, some of the driving devices 201 within the sensing area may be arranged with at least partial vertical overlap. Similarly, the wiring around two driving devices 201 may be arranged to intersect or fit together to achieve partial overlap. Correspondingly, the same wiring method can be used to make three, four, or more driving devices 201 partially overlap. It should be noted that this embodiment does not specifically limit the number of driving devices 201 that are partially overlapped; any number of driving devices 201 can partially overlap. For example, within the sensing area, several pairs of driving devices 201 may be partially overlapped, and several pairs of three driving devices 201 may be partially overlapped, as long as the purpose is achieved. However, this disclosure is not limited to this; in this embodiment, some driving devices 201 may be arranged close together, with some partially overlapping.

[0062] In this embodiment, multiple driving devices 201 connected to the corresponding light-emitting devices 110 in a pixel unit can be arranged in an overlapping manner. Due to the overlapping arrangement, the area occupied by the multiple driving devices 201 in the sensing area can be reduced. This arrangement not only increases the area of ​​the light-transmitting region in the sensing area, but also facilitates the wiring design of the driving devices 201 connected to the light-emitting devices 110 in a pixel. For example, some lines can be shared or integrated, saving production materials and reducing the difficulty of production.

[0063] In this embodiment, the driving devices 201 corresponding to the light-emitting devices 110 emitting the same color light within the sensing area can also be arranged in an overlapping manner. Within the sensing area, the light-emitting devices 110 emitting the same color light can generally be arranged in a column or row. Overlapping the driving devices 201 corresponding to the light-emitting devices 110 emitting the same color light allows for the direct overlapping of the driving devices 201 corresponding to multiple adjacent or nearby light-emitting devices 110. This arrangement is easier to operate and reduces production difficulty.

[0064] In this embodiment, since the driving device 201 has a small range of movement, the electrical connection lines between the driving device 201 and the corresponding connected light-emitting device 110 are not exposed and will not affect the light transmittance. Therefore, it is not necessary to connect the driving device 201 and the light-emitting device 110 through the transparent metal 50, which can reduce the production cost and simplify the production process.

[0065] In this embodiment, by arranging some of the driving devices 201 in the sensing area of ​​the driving layer 200 in such a way, the proportion of the light-transmitting area within the sensing area is higher than that within the non-sensing area. That is, increasing the light-transmitting area within the sensing area increases the light transmittance of the driving layer 200. Furthermore, in some terminals, where the area for fingerprint recognition is large, making it difficult to move the driving devices 201 outside the sensing area, the arrangement method of this embodiment can also achieve the goal of increasing light transmittance.

[0066] It should be noted that the various arrangements of the driving devices 201 provided in this embodiment can also be combined with each other. For example, within the sensing area, there may be an arrangement in which multiple driving devices 201 are placed close to each other, or there may be an arrangement in which multiple driving devices 201 are placed in a non-sensing area and connected to the light-emitting device 110 using a transparent metal. The arrangement of the driving devices 201 can be specifically set as needed to achieve the desired purpose, and this disclosure does not impose any limitations.

[0067] Based on the same concept, this disclosure also provides a display screen. The display screen of this disclosure includes a display panel as described in any of the foregoing embodiments, and further includes an optical sensing device.

[0068] The display screen disclosed herein may include multiple optical recognition modules. For example, on a display screen with a large display area, such as a full-screen or foldable screen, where multiple parts need to be equipped with fingerprint recognition functions, the corresponding purpose can be achieved by setting multiple optical recognition modules.

[0069] The display screen disclosed herein emits light through a light-emitting layer. This emitted light diffuses outwards from the display screen. When the emitted light encounters an object such as a finger, it is reflected. The reflected light then travels from the outside of the display screen inwards, passing sequentially through a cover plate, the light-emitting layer, and the driving layer before reaching the photoelectric sensor. When the reflected light passes through the driving layer, the reduced number of driving devices in the sensing area increases the light transmittance within that area, resulting in a greater amount of reflected light and increased brightness. In other words, the display screen of this embodiment has increased light transmittance and sufficient reflected light, providing a highly recognizable fingerprint image for fingerprint recognition. This improves the comparison rate with the registered fingerprint image and enhances the user experience.

[0070] Based on the same concept, this disclosure also provides a terminal. The terminal of this disclosure includes the display screen of any of the foregoing embodiments.

[0071] The terminal disclosed herein can adjust the arrangement of the driving devices to make the proportion of the light-transmitting area within the sensing area higher than that within the non-sensing area. This increases the light-transmitting area within the sensing area, thus increasing the light transmittance of the driving layer. The terminal of this disclosure has a high light transmittance display, which improves fingerprint visibility and enables fingerprint recognition even when the emitted light brightness is low. Alternatively, this setting can also accurately recognize fingerprints when their light sensitivity is insufficient.

[0072] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0073] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0074] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0075] It can be further understood that, unless otherwise specified, "connection" includes both direct connections where no other components exist between the two parties and indirect connections where other components exist between them.

[0076] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0077] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0078] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A display panel having a sensing area corresponding to an optical fingerprint component, characterized in that, The display panel includes: A light-emitting layer, comprising a plurality of light-emitting devices for emitting light; and A driving layer is disposed below the light-emitting layer and includes multiple driving devices connected to multiple light-emitting devices. The area of ​​the driving layer occupied by the multiple driving devices is a non-transparent area, and the area outside the non-transparent area in the driving layer is a transparent area. The plurality of driving devices are arranged such that the area ratio of the light-transmitting area within the sensing area is higher than that within the non-sensing area. The non-sensing area is the area outside the sensing area on the display panel. The driving devices and the light-emitting device are electrically connected through a transparent metal. Some of the driving devices within the sensing area are arranged with at least partial vertical overlap.

2. The display panel according to claim 1, characterized in that, Within the sensing area, one of the driving devices is electrically connected to a plurality of the light-emitting devices.

3. The display panel according to claim 1, characterized in that, The driving devices corresponding to some or all of the light-emitting devices within the sensing area are disposed in the non-sensing area.

4. The display panel according to claim 3, characterized in that, The driving device corresponding to the portion of the light-emitting device that emits light of the same color within the sensing area is disposed in the non-sensing area.

5. The display panel according to claim 1, characterized in that, In a pixel unit, the multiple light-emitting devices corresponding to the multiple driving devices are respectively connected to each other and arranged close to each other or at least partially overlapping vertically.

6. The display panel according to claim 1, characterized in that, The driving devices corresponding to the light-emitting devices that emit light of the same color within the sensing area are arranged close to each other or at least partially overlap vertically.

7. A display screen, characterized in that, include: The display panel as described in any one of claims 1-6; as well as An optical sensor is disposed below the display panel, corresponding to the sensing area.

8. A terminal, characterized in that, Includes the display screen as described in claim 7.

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