Display panel and display device

Abstract

Embodiments of the present invention provide a display panel and display device that address the problem of existing ambient light sensors typically being installed externally within electronic devices, resulting in low integration and insufficient space utilization. The display panel and display device comprise a display area and a non-display area, the non-display area surrounding the edges of the display area; a drive signal line layer disposed within the non-display area; and a groove defining a light-sensing element within the groove.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Ambient light sensors are used to detect ambient light in various electronic devices, such as smartphones, cameras, and display devices. For example, in smartphones, ambient light sensors sense ambient light, which is used by the smartphone for various applications, including adjusting the display brightness and camera settings. Existing ambient light sensors are typically installed externally within electronic devices, resulting in low integration and insufficient space utilization. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a display panel and a display device, which solve the problem that existing ambient light sensors are usually installed in electronic devices in an external form, have low integration, and lead to insufficient space utilization in electronic devices.

[0004] In a first aspect, an embodiment of the present invention provides a display panel comprising:

[0005] A display area and a non-display area, wherein the non-display area is arranged around the edges of the display area; a driving signal line layer is arranged in the non-display area; the driving signal line layer is provided with a groove, and a light sensing element is arranged in the groove.

[0006] In one embodiment, the display panel further includes a first signal line and a flexible circuit board, and the light sensing element is connected to the first signal line and the flexible circuit board respectively; one end of the light sensing element is grounded.

[0007] In one embodiment, the light sensing element includes a diode; the flexible circuit board includes a second signal line and a third signal line, the first electrode of the sub-light sensing element is connected to the first signal line; the second electrode of the sub-light sensing element is connected to the second signal line; and the third electrode of the sub-light sensing element is connected to the third signal line.

[0008] In one embodiment, the light sensing element includes a plurality of sub-light sensing elements connected in sequence, and a color filter structure is provided on some of the sub-light sensing elements vertically above the display panel.

[0009] In one embodiment, the display panel includes a plurality of the first signal lines; the flexible circuit board includes a plurality of the second signal lines and a plurality of the third signal lines;

[0010] The first electrode of each sub-light sensing element is connected to one of the first signal lines; the second electrode of each sub-light sensing element is connected to one of the second signal lines; and the third electrode of each sub-light sensing element is connected to one of the third signal lines.

[0011] In one embodiment, the display panel further includes a plurality of first grounding wires, wherein a first grounding wire is disposed on both sides of each first signal line.

[0012] In one embodiment, comprising:

[0013] Shielding layer;

[0014] a buffer layer, disposed on one side of the shielding layer;

[0015] a first metal layer, disposed on a side of the buffer layer away from the shielding layer; the first metal layer penetrates the buffer layer and contacts the shielding layer, the first metal layer comprising a plurality of linear structures arranged in parallel;

[0016] A first signal line layer includes a plurality of first signal lines arranged in parallel, wherein each of the first signal lines is provided with one of the linear structures on both sides thereof;

[0017] a planarization layer, disposed on surfaces of the first metal layer, the first signal line layer, and the buffer layer;

[0018] A grounding layer is arranged on the surface of the flat layer. The grounding layer includes a plurality of first grounding wires arranged in parallel. Each of the first grounding wires passes through the flat layer and contacts one of the linear structures.

[0019] In one embodiment, the flexible printed circuit board includes a second grounding conductor, and the shielding layer is connected to the second grounding conductor.

[0020] In one embodiment, the light sensing element includes four sub-light sensing elements connected in sequence; the four sub-light sensing elements are respectively: a red light sensing element, a green light sensing element, a blue light sensing element and a white light sensing element.

[0021] In a second aspect, an embodiment of the present invention provides a display device including the display panel described above.

[0022] An embodiment of the present invention provides a display panel and a display device, wherein the display panel includes a display area and a non-display area, wherein the non-display area is arranged around the edges of the display area; a driving signal line layer is arranged in the non-display area; the driving signal line layer is provided with a groove, and a light sensing element is arranged in the groove; the display panel also includes a first signal line and a flexible circuit board, and the light sensing element is respectively connected to the first signal line and the flexible circuit board, thereby integrating the light sensing element into the display panel, replacing the function of an external sensor, thereby effectively utilizing the space of the display panel and improving the integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG2 is a schematic structural diagram of a display panel provided by an embodiment of the present invention.

[0024] Figure 2 FIG. 1 is a schematic structural diagram of a light sensing element provided by an embodiment of the present invention.

[0025] Figure 3 FIG2 is a schematic structural diagram of a light sensing element provided by another embodiment of the present invention.

[0026] Figure 4 FIG2 is a schematic structural diagram of a red light sensing element provided by an embodiment of the present invention.

[0027] Figure 5 FIG2 is a schematic structural diagram of a green light sensing element provided by an embodiment of the present invention.

[0028] Figure 6 FIG2 is a schematic structural diagram of a blue light sensing element provided by an embodiment of the present invention.

[0029] Figure 7 FIG2 is a schematic structural diagram of a white light sensing element provided by an embodiment of the present invention.

[0030] Figure 8 FIG2 is a schematic diagram of a light sensing element connection structure provided by an embodiment of the present invention.

[0031] Figure 9 FIG2 is a circuit diagram of a light sensing element connection provided by an embodiment of the present invention.

[0032] Figure 10 FIG2 is a schematic diagram showing the distribution of a first signal line layer and a ground layer provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] This embodiment provides a display panel such as Figure 1 and Figure 2 As shown, the display panel includes a display area and a non-display area, and the non-display area is arranged around the edges of the display area; a driving signal line layer 12 is arranged in the non-display area; the driving signal line layer 12 has a groove, and a light sensing element 11 is arranged in the groove.

[0035] The driving signal line layer 12 can be an ELVSS signal line; the non-display area includes the border area; a groove can be formed in the middle of the ELVSS signal line layer in the border area of the display panel to reserve the required position for the light sensing element 11. In subsequent processes, the light sensing element 11 can be placed in the groove. The upper metal layer corresponding to the position of the light sensing element 11 is treated to avoid light transmission. The four groups of R / G / B / W light sensing elements 11 are compatible with the COE (Color Filter On Encapsulation, without polarizer) film forming process, and the ME mechanism ink is treated with a window to ensure light transmission.

[0036] Optionally, the light sensing element 11 includes an ambient light sensor.

[0037] In this embodiment, the light sensing element 11 is integrated into the display panel, replacing the function of the external sensor, thereby effectively utilizing the space of the display panel and improving the integration level.

[0038] In one embodiment of the present invention, the display panel further includes a first signal line 13 and a flexible circuit board 14, and the light sensing element 11 is respectively connected to the first signal line 13 and the flexible circuit board 14. One end of the light sensing element 11 is grounded.

[0039] In one embodiment of the present invention, the light sensing element 11 includes a diode; the flexible circuit board 14 includes a second signal line 141 and a third signal line 142, the first electrode of the light sensing element 11 is connected to the first signal line 13; the second electrode of the light sensing element 11 is connected to the second signal line 141; the third electrode of the light sensing element 11 is connected to the third signal line 142.

[0040] Optionally, the first electrode is a collector or an emitter; the second electrode is an emitter or a collector; and the third electrode is a base. The present invention does not limit the specific types of the first electrode, the second electrode, and the third electrode.

[0041] Optionally, the first signal line 13 is a Vgain signal line; the second signal line 141 is a Vgain signal line on the flexible circuit board 14 ; and the third signal line 142 is a SWgain signal line on the flexible circuit board 14 .

[0042] 5 In one embodiment of the present invention, Figure 3 As shown, the light sensing element 11 includes a plurality of sub-light sensing elements 11 connected in sequence, and some of the sub-light sensing elements are provided with a color filter structure vertically above the display panel. Optionally, a red color filter can be formed above the light sensing element to transmit red light, such as Figure 4 As shown;

[0043] A green color film can be formed on the photosensitive device to transmit green light, such as Figure 5 As shown; a blue color film can be formed above the photosensitive device to transmit blue light, as shown Figure 6 As shown; it is also possible not to form a 0 color filter structure on the photosensitive device, but to directly sense white light, such as Figure 7 Optionally, the photosensitive region of the light sensing device is compatible with two doping process devices, PIN and PIP, which are planar structures, and the present invention does not limit this.

[0044] Optionally, the light sensing element 11 includes four sub-light sensing elements connected in sequence; the four sub-light sensing elements are: a red light sensing element 01 , a green light sensing element 02 , a blue light sensing element 03 and a white light sensing element 04 .

[0045] The display panel includes a plurality of first signal lines 13; the flexible circuit board 14 includes a plurality of second signal lines 141 and a plurality of third signal lines 142; the first electrode of each sub-light sensing element is connected to one first signal line 13; the second electrode of each sub-light sensing element is connected to one second signal line 141; and the third electrode of each sub-light sensing element is connected to one third signal line 142.

[0046] 0 as Figure 8 and Figure 9As shown, the light sensing element 11 is an ambient light sensor, in which a red light sensor, a green light sensor, a blue light sensor and a white light sensor are connected in sequence to form an ambient light sensor; the first electrode of the red light sensor is connected to the Vgain_R signal line, the second electrode is connected to the Vgain_R signal line of the FPC (Flexible Printed Circuit, flexible circuit board 14), and the third electrode is connected to the SWgain_R signal line of the FPC; the first electrode of the green light sensor is connected to the Vgain_G signal line, the second electrode is connected to the Vgain_G signal line of the FPC, and the third electrode is connected to the SWgain_G signal line of the FPC; the first electrode of the blue light sensor is connected to the Vgain_B signal line, the second electrode is connected to the Vgain_B signal line of the FPC, and the third electrode is connected to the SWgain_B signal line of the FPC; the first electrode of the white light sensor is connected to the Vgain_W signal line, the second electrode is connected to the Vgain_W signal line of the FPC, and the third electrode is connected to the SWgain_W signal line of the FPC.

[0047] In one embodiment of the present invention, the display panel further includes a plurality of first grounding wires 15, wherein a first grounding wire 15 is provided on both sides of each first signal line 13; one end of the light sensing element 11 is grounded; thereby forming a GND (Ground, abbreviation for the grounding end of the wire) shielding structure, isolating the plurality of first signal lines 13, thereby avoiding interference of the signal within the panel with the ambient light sensor signal, reducing the noise of the Vgain capture signal, and improving the signal-to-noise ratio.

[0048] In one embodiment of the present invention, Figure 10 As shown, the display panel includes a shielding layer (BSM layer), a buffer layer (Buffer layer), a first metal layer, a first signal line layer, a flat layer and a ground layer. Among them, the buffer layer is arranged on one side of the shielding layer; the first metal layer is arranged on the side of the buffer layer away from the shielding layer; the first metal layer passes through the buffer layer and contacts the shielding layer, and the first metal layer includes a plurality of parallel linear structures; the first signal line layer includes a plurality of parallel first signal lines 13, wherein each of the first signal lines 13 is provided with a linear structure on both sides; the flat layer is arranged on the surface of the first metal layer, the first signal line layer, and the buffer layer; the ground layer is arranged on the surface of the flat layer, and the ground layer includes a plurality of parallel first grounding wires 15, each of the first grounding wires 15 passes through the flat layer and contacts one of the linear structures. The flexible circuit board 14 includes a second grounding wire 143, and the shielding layer is connected to the second grounding wire 143.

[0049] Optionally, a hole can be punched in a corner of each sub-photosensor to serve as a jumper punching area for the shielding layer, the first metal layer and the grounding layer, and the shielding layer and the first metal layer are connected through the CNT hole; a hole can be punched on the flat layer to connect the first metal layer and the grounding layer.

[0050] The structure described in this embodiment forms a boxed signal shielding structure with ground signals at the bottom and left and right sides of the Vgain signal line in the first signal line layer, thereby preventing the captured ambient light sensor signal from being contaminated by the display signal of the display panel, thereby improving the signal-to-noise level of the ambient light sensor.

[0051] This embodiment provides a display device, including the display panel described in the above embodiment.

[0052] Optionally, the display device may be a mobile phone, a computer, a tablet computer, a vehicle-mounted display device, etc. The present invention does not limit the specific use of the display device.

[0053] Those skilled in the art will appreciate that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention. Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0054] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. On the other hand, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the scheme of this embodiment.

[0055] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0056] The block diagrams of devices, apparatuses, equipment, and systems referred to in this application are intended only as illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems may be connected, arranged, or configured in any manner.

[0057] It should also be noted that in the apparatus, device, and method of the present application, each component or each step can be decomposed and / or recombined, and such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0058] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0059] In the description of the application, the meaning of "multiple" is at least two, for example two, three, etc., unless otherwise clearly and specifically limited. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back, top, bottom ...) are only used to explain the relative position relationship, motion situation, etc. between each component under a certain specific posture (as shown in the drawings). If this specific posture changes, this directional indication also changes accordingly. In addition, the terms "comprise" and "have" and any deformation thereof are intended to cover non-exclusive inclusion. For example, the process, method, system, product or equipment comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes the steps or units not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0060] In addition, references to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of such phrases in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0061] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art who can easily think of changes or replacements within the technical scope disclosed by the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A display panel, characterized in that: include: a display area and a non-display area, wherein the non-display area is arranged around the edges of the display area; a driving signal line layer is provided in the non-display area; a groove is formed in the driving signal line layer, and a light sensing element is provided in the groove, wherein the light sensing element includes a plurality of sub-light sensing elements connected in sequence; The display panel further includes a plurality of first signal lines, and each of the light sensing elements is connected to one of the first signal lines; The display panel includes: Shielding layer; a buffer layer, disposed on one side of the shielding layer; a first metal layer, disposed on a side of the buffer layer away from the shielding layer; the first metal layer penetrates the buffer layer and contacts the shielding layer, the first metal layer comprising a plurality of linear structures arranged in parallel; A first signal line layer includes a plurality of first signal lines arranged in parallel, wherein each of the first signal lines is provided with one of the linear structures on both sides thereof; a planarization layer, disposed on surfaces of the first metal layer, the first signal line layer, and the buffer layer; A grounding layer is arranged on the surface of the flat layer. The grounding layer includes a plurality of first grounding wires arranged in parallel. Each of the first grounding wires passes through the flat layer and contacts one of the linear structures.

2. The display panel according to claim 1, wherein: The display panel further includes a flexible circuit board, and the light sensing element is connected to the flexible circuit board; one end of the light sensing element is grounded.

3. The display panel according to claim 2, wherein: The light sensing element includes a diode; the flexible circuit board includes a second signal line and a third signal line, the first electrode of the light sensing element is connected to the first signal line; the second electrode of the light sensing element is connected to the second signal line; the third electrode of the light sensing element is connected to the third signal line.

4. The display panel according to claim 1, wherein: The light sensing element includes a plurality of sub-light sensing elements connected in sequence, and some of the sub-light sensing elements are provided with a color film structure vertically above the display panel.

5. The display panel according to claim 3, wherein: The light sensing element includes a plurality of sub-light sensing elements connected in sequence, the display panel includes a plurality of the first signal lines; the flexible circuit board includes a plurality of the second signal lines and a plurality of the third signal lines; The first electrode of each sub-light sensing element is connected to one of the first signal lines; the second electrode of each sub-light sensing element is connected to one of the second signal lines; and the third electrode of each sub-light sensing element is connected to one of the third signal lines.

6. The display panel according to claim 5, wherein: The display panel further includes a plurality of first grounding wires, and one first grounding wire is disposed on both sides of each first signal line.

7. The display panel according to claim 2, wherein: The flexible circuit board includes a second grounding wire, and the shielding layer is connected to the second grounding wire.

8. The display panel according to claim 1, wherein: The light sensing element comprises four sub-light sensing elements connected in sequence; the four sub-light sensing elements are respectively: a red light sensing element, a green light sensing element, a blue light sensing element and a white light sensing element.

9. A display device, characterized in that: The display panel comprises any one of claims 1 to 8.

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